JP2006170474A - Feeding mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in a conventional electric air gun that air discharging efficiency in firing is low as a cross-sectional area of an air passage portion of an air discharge nozzle of double structure is small, and the air entering into the air discharge nozzle from a plurality of air supply openings moves in the crank shape, and wasteful electric energy is consumed to achieve the same bullet speed. <P>SOLUTION: In this invention, the air discharge nozzle for discharging the air is not fixed to a cylinder head, but is constituted to move a nozzle member for feeding mounted in a state that it can be moved back and forth while kept into contact with an inner wall face of a through hole formed on the cylinder head member or kept into contact with an inner wall face of a cylinder, back and forth, and the cross-sectional area of the air passage of the air discharge nozzle limited in its outer diameter, is maximized while keeping linear movement of the discharged air, to improve the air discharging efficiency and to prevent the waste of electric energy of the electric air gun. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  According to the present invention, a bullet feeding mechanism for an electric air gun that moves a bullet feeding nozzle member back and forth to accurately push only one spherical bullet supplied from a magazine into a spherical bullet holding portion provided near the rear end of a barrel. It is about.

  The main subject of the present invention will be clarified by looking at the history of development of a general electric air gun bullet feeding mechanism in the toy gun industry.

The first patent application for an electric air gun in Japan is shown in Japanese Patent Application Laid-Open No. 2-217796. The filing date was March 23, 1988, about 16 years ago, and the applicant was Mr. Goro Kanno. is there.
1 and 2 are copies of the figures published in the publication of the patent application. At that time, gas guns that blow off spherical bullets with low-pressure gas were the mainstream. Especially in a fully-automatic full-automatic gas gun, the bullet-feeding nozzle member was moved back and forth, and only one bullet was supplied from the magazine. There is no concept of accurately pushing into a spherical bullet holding portion provided near the rear end of the barrel, and as shown in FIGS. 1 and 2, a bullet feed hole 2 provided in an intermediate portion of the barrel 1. Therefore, the idea that the spherical bullet 4 pushed by the spring 3 flows into the mainstream. Also in the electric air gun disclosed in Japanese Patent Laid-Open No. 2-217696, the main subject of the invention is how to construct an electric engine part that can counter a powerful gas gun using a motor and a battery, depending on the electric structure. The question was how to switch between single shot and continuous shot. Although FIG. 2 shows almost the same content as the basic structure of the current electric air gun, unfortunately, only one bullet is supplied from the magazine by moving the bullet supply nozzle member back and forth. The part that is accurately pushed into the spherical bullet holding part provided near the rear end of the barrel is completely out of the basics. The present invention has never been commercialized as it is. Three applications were filed from Tokyo Marui Co., Ltd. on January 25, 1990, approximately one year and ten months after the filing date of this Japanese Patent Application Laid-Open No. 2-17796. JP-A-3-221793, JP-A-3-104688, and JP-A-3-104689.

  In Japanese Patent Laid-Open No. 3-221793, there is an invention in which switching between single shot and continuous shot is mechanically processed using a cam and a tappet arm, and in Japanese Utility Model Laid-Open No. 3-104688, a shutter and a cam that open and close a bullet opening. Has been devised to accurately push only one spherical bullet supplied from the magazine into the spherical bullet holding part provided near the rear end of the barrel. It was devised that the initial meshing becomes more reliable by increasing the height of the first teeth of the rack gear. And the product which reflected the contents of these three applications was released from Tokyo Marui Co., Ltd., which compensates for the shortcomings of the basic structure shown in Japanese Patent Application Laid-Open No. Hei 2-217696, invented by Mr. Goro Kanno. This became the first mass-produced large electric air gun in Japan. Since then, nearly 15 years have passed since then, but it can be said that the large electric air gun has basically not changed. The initial basic design was so great that it didn't need to be changed, or because it almost monopolized the electric air gun market, there was no need to change it. It is true that the basic mechanism that has been exported into the world has become the world standard for electric air guns.

FIG. 3 is a copy of the figure published in the gazette of the utility model registration application of Japanese Utility Model Laid-Open No. 3-104688. This is the bullet feed mechanism that is currently the world standard for electric air guns.
An air discharge nozzle 7 serving as a discharge port for discharging air is fixedly arranged on a cylinder head 6 provided integrally with the cylinder 5 at the tip of the cylinder 5 fixed inside the gun body. Yes. Another pipe-shaped member 8 is placed on the outside of the fixedly arranged air discharge nozzle 7, and the gear that performs one rotation for each firing and the pipe-shaped member 8 are linked via the connecting member 9. The pipe-shaped member 8 is moved back and forth only once per rotation of the gear. The pipe-shaped member 8 pushes the spherical bullet 10 pushed up from the magazine into the inside of the elastic packing member 11 disposed at the rear end of the barrel. When the push-in is completed, the piston 175 moves forward at high speed, and the air blown from the air discharge nozzle 7 moves the spherical bullet 10 forward and jumps out of the barrel. The force for advancing the pipe-shaped member 8 is given by the return spring 12. When the force of the return spring 12 is weak, air leakage occurs between the pipe-shaped member 8 and the elastic packing member 11, so that the return spring 12 always pushes the pipe-shaped member 8 forward with a considerably strong force. The point to be emphasized here is that the air discharge nozzle is fixed to the cylinder head. In addition, a double structure is used in which another pipe-shaped member is placed outside the air discharge nozzle to supply the bullet. It is a point.

  FIG. 4 is a copy of a part of an assembly manual of an electric air gun manufactured by Tokyo Marui. The same reference numerals as those used in FIG. 3 are used for the components. In Japanese Utility Model Laid-Open No. 3-104688, the pipe-shaped member 8 is called a shutter, but in the description, the pipe-shaped member 8 is called a nozzle. In industry magazines and the air gun industry, this pipe-shaped member 8 has been called a loading nozzle for a long time.

  The history of the electric air gun is older than that disclosed in Japanese Patent Application No. 1-217796, Hobby Japan magazine, published on October 1, 1986, THE SHOOTING GUN part3 p98 to p102. In addition, the basic structure leading to the current electric air gun is specifically shown. FIG. 5 is a copy of the diagram shown at p98. A gear 14 is disposed in the main body case portion 13 and is connected to the connecting member 15 so that the loading nozzle moves back and forth only once for each rotation of the gear. Further, p99 has a detailed component diagram as shown in FIG. 6 and shows a loading nozzle 16. Anyone can understand that the basic shape of this loading nozzle 16 is almost the same as the nozzle shown in FIG. 4 which is a copy of the assembly manual of Tokyo Marui Electric Air Gun Co., Ltd. is there. The gun shown in the magazine THE SHOOTING GUN part3 is not a complete electric air gun, but is an electric and gas mixed model that uses a gas firing mechanism to launch a spherical bullet. The basic structure in which the loading nozzle moves back and forth once per rotation of the gear is the same as that of Japanese Utility Model Laid-Open No. 3-104688. However, in Japanese Utility Model Publication No. 3-104688, the firing mechanism is changed to a gear with a part of the tooth removed and a piston with rack teeth, and both the bullet feeding and firing are electric. Is different.

  However, this system that fires a spherical bullet by electrically moving a piston with rack teeth and a gear without a tooth is a hobby published on November 1, 1985 (Showa 60). Japan magazine separate volume, THE SHOOTING GUN separate volume 2 This is the system shown in the article of the electric air gun introduced in THE SURVIVE GAME p36 to p42. FIG. 7 is a copy of the figure shown on p42 of the magazine. This is an illustration titled ALL That, s Motor Drive System, and lists four methods other than the cam method used in the work introduced in the article. The author of the article, Yukio Hayashi, was a person who had created several electric air guns that no one had thought of at that time. It may be said that the foundation of the current electric air gun was built by him. Some of them were published in magazines. His gun, a mixed model of electric and gas, is also his work. The basic structure of Japanese Utility Model 3-104688 filed by Tokyo Marui Co., Ltd. is based on the idea of the electric bullet feeding system shown in the work of Yukio Hayashi and the combination of the piston with rack gear and the toothless gear. Are appropriately combined.

  Yukio Hayashi has announced a new system for feeding and launching electric air guns in the above-mentioned magazine THE SHOOTING GUN separate volume 2 THE SURVIVE GAME. FIG. 8 is a part of a copy of the figure shown on p36 of the magazine. A loading nozzle 17 also serving as an air discharge port is provided in the front, a cylinder 19 provided with guide members 18 on both sides, a piston 21 provided with guide members 20 on both sides, a piston spring 22, and a spring guide 23. A bullet and launch system. While moving the cylinder 19 back and forth with a cam, the piston spring 22 is wound up and fired when the bullet feed is completed, which is an epoch-making system at that time. FIG. 9 is a copy of the figure shown on p37 of the magazine. The bullet feeding and firing system shown in Fig. 9 uses a cam to move the cylinder and piston from above, and this is also a combination of a piston with a rack gear and a toothless gear based on the idea of Mr. Yukio Hayashi. The basic structure of registered utility model publication No. 3018271, registered utility model publication No. 3021876, Japanese Patent Application Laid-Open No. 2001-33196, and Japanese Patent Application Laid-Open No. 2001-280897 filed by Tokyo Marui Co., Ltd. is there. Tokyo Marui Co., Ltd. started to file four applications from May 17, 1995. Almost ten years ago, Yukio Hayashi had already announced the basic system in his work. It was. This method can be unitized very compactly and is suitable for small guns. Tokyo Marui Co., Ltd. uses this system for children's mini electric gun series, boys' electric gun series for boys, and RC tank bullet launchers.

  Horikawa Toy Kogyo Co., Ltd. filed a patent application for electric air gun next to Tokyo Marui Co., Ltd., which uses bellows type bellows disclosed in JP-A-6-201297. FIG. 10 is a copy of a figure published in Japanese Patent Application Laid-Open No. 6-201297. The basic structure is the same as that of Tokyo Marui Co., Ltd. shown in FIG. 3, but is characterized by the use of bellows type bellows instead of cylinders and pistons. An air discharge nozzle that serves as a discharge port for discharging air is provided at a discharge port base head 24 that is integrally provided with the bellows type cover at the tip of a bellows type bellows fixed inside the gun body. 25 is fixedly arranged. Another pipe-shaped member 26 is placed on the outside of the fixedly arranged air discharge nozzle 25, and a gear that rotates once for each firing and the pipe-shaped member 26 are linked via a connecting member 27. The pipe-shaped member 26 is moved back and forth only once per rotation of the gear. The point to be emphasized here is that the air discharge nozzle is fixed to the cylinder head. In addition, a double structure is used in which another pipe-shaped member is placed outside the air discharge nozzle to supply the bullet. It is a point.

  Next to Horikawa Toy Industry Co., Ltd., Marsin Kogyo Co., Ltd. filed a patent application relating to an electric air gun, which utilizes a piston and cylinder shown in Japanese Patent Laid-Open No. 10-148495. FIG. 11 is a copy of a figure published in Japanese Patent Application Laid-Open No. 10-148495. An air discharge nozzle 30 serving as a discharge port for discharging air is fixedly disposed on a cylinder head 29 provided integrally with the cylinder 28 at the tip of a cylinder 28 fixed inside the gun body. Yes. Up to this point, the system is the same as that of Tokyo Marui Co., Ltd., but the model gun was a medium-sized gun, and air could not be discharged linearly due to space problems. A passage is provided. It should be emphasized here that the air discharge nozzle is fixed to the cylinder head and that the air movement is not linear but takes a crank-like movement, so that the efficiency in launching is poor.

  Marushin Kogyo Co., Ltd. has filed an application using a bellows type bellows having a special shape as disclosed in JP-A-10-153400. FIG. 12 is a copy of a figure published in Japanese Patent Application Laid-Open No. 10-153400. An air discharge nozzle 31 that is integrally provided with the bellows-type lid is fixedly disposed at the tip of the bellows-type bellows fixed relative to the inside of the gun body. Another pipe-shaped member 32 is placed on the outside of the air discharge nozzle 31 that is fixedly arranged, and a gear that rotates once for each firing is connected to the pipe-shaped member 32 so that the pipe is rotated for each rotation of the gear. The shaped member 32 is moved back and forth only once. The point to be emphasized here is that the air discharge nozzle is fixed to the cylinder head. In addition, a double structure is used in which another pipe-shaped member is placed outside the air discharge nozzle to supply the bullet. It is a point.

  Marushin Kogyo Co., Ltd. has also filed an application in which an air supply valve is provided in the piston head, as disclosed in JP-A-10-159737. FIG. 13 is a copy of the figure published in the gazette of the patent application of JP-A-10-159737. An air discharge nozzle 35 serving as a discharge port for discharging air is fixedly disposed on the cylinder head 34 integrally provided with the cylinder 33 at the tip of the cylinder 33 fixed inside the gun body. Yes. It is different from the conventional devices and inventions except that another pipe-like member 36 is placed outside the fixedly arranged air discharge nozzle 35 and an air supply valve is provided in the head portion of the piston. There are few parts. The point to be emphasized here is that the air discharge nozzle is fixed to the cylinder head. In addition, a double structure is used in which another pipe-shaped member is placed outside the air discharge nozzle to supply the bullet. It is a point.

  Next to Marushin Kogyo Co., Ltd., the patent application regarding the electric air gun was filed by KSC Co., Ltd., which uses a piston and cylinder as disclosed in JP-A-2002-168594, and is provided inside the cylinder. This is a special and complicated structure in which a nozzle is provided at the tip of a long member arranged so as to penetrate the piston. FIG. 14 is a copy of the figure published in the publication of Japanese Patent Application No. 2002-168594. There is a cylinder head 38 provided integrally with the cylinder 37 at the tip of the cylinder 37 fixed to the inside of the gun body. The air discharge nozzle 39 is located at the tip of the long member 40 and is disposed so as to penetrate both the cylinder head 38 and the piston 41. The air discharge nozzle 39 is moved by using the movement of the piston 41 to move the long member 40. 39 is moved back and forth. The air discharge nozzle 39 is also an air inlet, and the air to be sucked is indicated by an arrow 42 in FIG. Exhaust is performed in the same route. The movement of the intake and exhaust air is not linear, and it takes a crank-like movement that goes in and out from the vent provided in the middle of the pipe, so it is impossible to exhaust the air stored in the cylinder at once. This method is inefficient at launch. FIG. 15 is a copy of a figure published in Japanese Patent Application Laid-Open No. 2002-181493. This is an application of the same KSC Co., Ltd., and shows the overall shape of the long member 40 described above. It can be seen that a vent 43 is provided behind the air discharge nozzle 39. It should be emphasized here that this mechanism is not a linear movement of the air that is sucked and exhausted, and the air that enters the air discharge nozzle from a plurality of vents generates a turbulent flow while moving in a crank-like manner. Therefore, the instantaneous exhaust efficiency at the time of launch is poor.

The above is the history of Japanese electric air guns investigated by the applicant.
JP-A-2-217796 Japanese Patent Laid-Open No. 3-221793 Japanese Utility Model Publication No. 3-104688 Japanese Utility Model Publication No. 3-104689 Registered Utility Model Publication No. 3018271 Registered Utility Model Publication No. 3021876 JP 2001-33196 A JP 2001-280897 A JP-A-6-201297 Japanese Patent Laid-Open No. 10-148495 JP-A-10-153400 JP-A-10-159737 JP 2002-168594 A JP 2002-181493 A Hobby Japan magazine, published separately on October 1, 1986, THE SHOOTING GUN part3 p98 to p102 Hobby Japan magazine separate volume published on November 1, 1985 (THE SHOOTING GUN separate volume 2 THE SURVIVE GAME p36 to p42)

  The problem to be solved is that, in the conventional electric air gun of mechanically linked with the piston driving rotator and moving the bullet feeding nozzle back and forth, the air discharge efficiency at the time of launching has a double structure. The air discharge nozzle has a bad sectional area of the air passage, the air discharge path is bent in a crank shape, or the air that enters the air discharge nozzle from multiple vents generates turbulent flow. However, because it takes a crank-like movement, it is bad, and it is a point that wasteful electric energy is consumed to obtain the same bullet speed.

  The present invention is provided in the cylinder head member without fixing the air discharge nozzle for discharging the air in the cylinder to the cylinder head in order to improve the air discharge efficiency in the electric air gun and prevent the consumption of unnecessary electric energy. The bullet feed nozzle member is arranged to move back and forth while touching the inner wall surface of the through hole or while touching the inner wall surface of the cylinder, and the movement of the discharged air remains linear. The most important feature is that the cross-sectional area of the air passage portion of the air discharge nozzle having a limited outer diameter is maximized.

  Since the bullet feed mechanism of the present invention has a single structure in which the air discharge nozzle also serves as the loading nozzle, the fixed air discharge nozzle and the movable loading nozzle double as in the conventional bullet feed mechanism of the cylinder fixed type electric air gun. Unlike the bullet feeding mechanism configured as described above, the cross-sectional area of the air passage portion of the air discharge nozzle can be increased by the cross-sectional integral of one pipe. For example, the outer diameter of the tip of the loading nozzle used in the M16 series or M4 series of Tokyo Marui Electric Air Gun is 7.2 mm and the inner diameter is 5.46 mm. The air discharge nozzle has an outer diameter of 5.4 mm and an inner diameter of 4.76 mm. Since there is a gap between the outer pipe and the inner pipe, air leakage naturally occurs, but no effort is made to prevent air leakage by inserting an elastic packing. The air leak here seems to be ignored. By changing this double structure to the single structure according to the present invention without changing the numerical values of the outer pipe with an outer diameter of 7.2 mm and the inner diameter of 5.46 mm, the outer diameter as a loading nozzle is not changed. The cross-sectional area of the passage portion is increased by about 31.6%. Efforts are made to prevent air leakage by inserting an elastic packing, but air leakage does not occur because of the single structure. Although the air discharge efficiency does not simply increase as much as 31.6%, an improvement in efficiency close to that can be expected. Simply thinking, if there is an efficiency improvement of 30%, even if the force of the piston spring for advancing the piston is weak by 30%, almost the same bullet speed can be obtained. Naturally, since the force for winding up the piston spring can be reduced, the load on the motor is reduced proportionally. If the load on the motor is reduced, the life of the motor will be extended. Power consumption is reduced, and the number of bullets that can be fired with a single charge increases. What has been able to fire only 1000 shots in a single charge so far, for example, can fire 1300 shots.

  The simplest purpose is to improve the disadvantage of the conventional standard electric air gun that the air discharge efficiency at the time of launch was bad because the cross-sectional area of the air passage part was small due to the double structure air discharge nozzle What has been realized with this configuration is the embodiment shown in FIGS.

  FIG. 16 shows a state in which the present invention is implemented using the basic structure of an electric air gun manufactured by Tokyo Marui. The bullet feeding nozzle member 44 is arranged so as to move back and forth while contacting the inner wall surface of a through hole provided in the cylinder head member 45. If the difference between the outer diameter of the bullet feeding nozzle member 44 and the inner diameter of the through hole provided in the cylinder head member 45 is about 0.01 mm, there is no need to worry about air leakage. Since the accuracy of this area is about 0.2 mm in the product, it is usual to arrange an elastic packing 46 for preventing air leakage. The bullet feeding nozzle member 44 is provided with an engaging portion 47 which matches the engaging portion 49 provided near the tip of the arm member 48, and the bullet feeding nozzle member 44 moves integrally with the arm member 48. Can do. In the drawing, the engaging portion 47 of the bullet feeding nozzle member 44 is convex and the engaging portion 49 provided near the tip of the arm member 48 is drawn in a concave shape, but the concavities and convexities may be reversed. Absent. A cam contact member 50 is provided in the vicinity of the rear end of the arm member 48 and is in contact with a cam pin 52 provided on a side surface portion of the piston driving rotor 51. When the piston driving rotator 51 rotates in the direction of the arrow 53, the cam pin 52 pushes down the cam contact member 50 in the direction of the arrow 54. FIG. 16 shows a state in which the three members of the bullet feeding nozzle member 44, the arm member 48, and the cam contact member 50 are moved together and retracted most. The piston driving rotator 51 provided with a concavo-convex portion meshing with a rack gear-shaped concavo-convex portion 56 provided on the piston 55 is slightly lowered in the direction of the arrow 54.

  In the situation where the bullet feeding nozzle member 44 has been retracted as shown in FIG. 16, the spherical bullet 55 pushed out by receiving a force in the direction indicated by the arrow 176 from the bullet feeding device in the magazine is the rise limiting member. Ascending to a position in contact with the lower portion of 56. The rise limiting member 56 is urged in the direction of the arrow 58 by the elastic member 57. Such a member as the rise limiting member 56 does not exist in the past electric air gun. Without the ascending restriction member 56, the position of the ball bullet 59 to be fired next becomes a higher position, and when the bullet feed nozzle member 44 moves forward, the ball bullet 59 to be fired next is fed. The phenomenon that the nozzle member 44 is pushed down occurs. The push-down pushes down all the spherical bullets rising from the magazine, and acts as a force in a direction that reverses the spherical bullet feed device in the magazine. Since the actual push-down movement is about 1 mm, all electric air gun manufacturers interpret that the movement will be absorbed in the space of about 20 bullets in the bullet passage in the magazine. However, this is a necessary member in order that the position of the spherical bullet 59 to be fired next does not change in FIG. 16 or FIG. As shown in FIG. 17, when the bullet feeding nozzle member 44 moves forward, the rise limiting member 56 is pushed up in the direction of the arrow 60. The ascending restriction member 56 may be provided on the cylinder unit side or on the gun body side. In FIGS. 16 and 17, the elastic member 57 is drawn on the cylinder unit side so as to work with the cylinder head member 45. In FIG. 29, as shown in FIG. 30, when the cylinder unit is pulled out to the rear of the upper frame, the ascending restriction member and the elastic member that pushes down the ascending restriction member are provided as shown in FIG. It will be left on the main body side. If the ascending limiting member and the elastic member that pushes down the ascending limiting member are left on the main body side of the gun, the extracted cylinder unit has a very clean outer shape as shown in FIG.

  FIG. 31 is a copy of a part of an actual gun disassembly manual. While the upper receiver 201 is being rotated upwards around the receiver pivot pin 200 being pushed by the tip of the bullet held on the finger, the lifted upper receiver 201 and the engine member are It can be seen that only a part of the housing member is visible between the lower receiver 202 and the housed lower receiver 202, and basically nothing. 32 is also a copy of a part of the manual for disassembling the actual gun, but the receiver pivot pin is pulled out, and the cylindrical part 203 called the bolt carrier is extracted from the upper receiver removed from the lower receiver. The scene is drawn. FIG. 28 illustrates a state in which an upper receiver 204 of an electric air gun manufactured by Tokyo Marui Co., Ltd. is rotated upward. A cylinder 206 is interposed between the raised upper receiver 204 and the lower receiver 205. And a piston spring 207, a nozzle 208, and a die-cast engine case 209 which accommodates them and is screwed. The engine case 209 is assembled on the lower receiver 205 side in a complicated procedure, and a general consumer cannot easily remove it. A plurality of main parts are integrally assembled in a state of being shaded, and are assembled on the lower receiver 205 side by a procedure that cannot be easily removed. How a toy is close to the real thing is a very important image product, but the disassembled image of FIG. 30 based on the present invention is compared to FIG. 28 which is an exploded image of an electric air gun manufactured by Tokyo Marui Co., Ltd. It is clear that it is closer to the real decomposition image as shown in FIG. Then, the disassembly as shown in the disassembly image of FIG. 30 can be easily performed by a general consumer by simply pulling out one pin called a take-down pin (not shown) that is used by penetrating the hole 200. It becomes like this. Exactly, anyone can easily enjoy the genuine disassembled image as shown in FIG.

  In FIG. 16, the piston driving rotator 51 having the rugged portion meshing with the rack gear-shaped rugged portion 56 provided on the piston 55 on the circumferential surface is slightly pulled down in the direction of the arrow 54. When the body 51 further rotates in the direction of the arrow 53, the cam pin 52 moves away from the cam contact member 50 and the arm member 48 moves in the direction of the arrow 62 by the action of the return spring 61, as shown in FIG. . Along with this, the spherical bullet 55 is pushed by the bullet feeding nozzle member 44 and moves to the spherical bullet holding space provided with the elastic member for preventing air leakage provided at the rear end of the barrel 63.

  When the piston driving rotator 51 further rotates in the direction of the arrow 53, a portion without the convex teeth of the piston driving rotator 51 appears, the piston 55 loses its support, and the live force of the piston spring 63 is released. The piston 55 advances at a high speed, and the air that has entered the aeration chamber 64 in the cylinder passes through the inside of the bullet feeding nozzle member 44 and strongly pushes the spherical bullet 55 forward. The spherical bullet 55 is sufficiently accelerated while passing through, and eventually the spherical bullet 55 jumps out of the muzzle at high speed.

  FIG. 18 shows a state in which the present invention is implemented by a method different from the basic structure of an electric air gun manufactured by Tokyo Marui. The electric air gun which adopts the method as shown in FIG. 18 has not existed in the past, and such an idea has never been published in a magazine or the like.

  As is apparent from FIGS. 16 and 17, the basic structure of the electric air gun manufactured by Tokyo Marui Co., Ltd. is such that the cam contact member 50 is pushed down by the cam pin 52, and the spherical bullet is placed behind the barrel 63. The force for pushing into the spherical bullet holding space provided at the end and the force in the direction of the arrow 62 are applied from the return spring 61. When the force of the return spring 61 is weak, the air compressed by the piston 55 moving forward at high speed leaks from between the tip of the bullet feeding nozzle member 44 and the elastic member intended to prevent air leakage. Therefore, the force of the return spring 61 used in an actual product is about 1 kilogram weight to 1.5 kilogram weight, which is a fairly strong spring. The spring is pushed down by the piston driving rotator 51 via the cam pin 52, and that alone is one work, and power is wasted.

  In the system as shown in FIG. 18, the return spring 65 is used for the purpose of moving the bullet feeding nozzle member 66 backward. The force only needs to resist the frictional force generated between the elastic packing 67 set on the outer periphery of the bullet feeding nozzle member 66 and the inner surface of the through hole of the piston head. A weak force of about 20% to 30% of the force of the return spring used in the basic system of Marui's electric air gun is sufficient. Then, as shown in FIG. 19, the force for pushing the spherical bullet 68 into the spherical bullet holding space provided at the rear end of the barrel 69, the force in the direction of the arrow 70, is provided on the side surface portion of the piston driving rotor 71. Since the force is supplied by the fan-shaped cam 72 and the force is a mechanical force, the outermost peripheral portion of the fan-shaped cam 72 does not attenuate as long as it continues to contact the rear end portion of the cam contact member 73. The tip of the bullet feeding nozzle member 66 can be continuously pushed into the rear end of the elastic member for the purpose of preventing air leakage so as to force it into the back. Therefore, even if the force of the return spring 65 is weak, there is no need to worry about air leakage near the tip of the bullet feeding nozzle member 66.

  When the piston driving rotator 71 further rotates in the direction of the arrow 74 from the state shown in FIG. 19, a portion without the convex teeth of the piston driving rotator 71 appears, the piston 75 loses its support, and the piston spring 76. The animal power is released and the piston 75 moves forward at high speed, and the spherical bullet 68 jumps out of the muzzle at high speed. Note that, as the bullet feeding nozzle member 66 advances, the rise limiting member 77 is pushed up in the direction of the arrow 78.

  In FIG. 20, for example, a spherical bullet 79 having a large scratch is sandwiched between the tip of the bullet feeding nozzle member 80 and the rear end of the elastic packing 92 that constitutes the spherical bullet holding space. The state which the nozzle member 80 for operation cannot keep moving forward is drawn. When the piston driving rotator 81 rotates in the direction of the arrow 82, the fan-shaped cam 83 provided on the side surface of the piston driving rotator 81 pushes the cam contact member 84 in the direction of the arrow 85. Since the tip end portion of 80 has a spherical bullet 79 sandwiched therebetween and cannot advance, the spring 87 disposed between the arm member 86 and the cam contact member 84 is compressed. When the piston driving rotator 81 further rotates in the direction of the arrow 82 from the state shown in FIG. 20, the piston 88 eventually advances at a high speed and collides with the cushion member 90 bonded to the rear end of the piston head 89. Normally, spherical bullets are fired, but in this case they are not fired. Thereafter, when the piston driving rotator 81 further rotates in the direction of the arrow 82, the piston 88 is pulled downward, the cam contact member 84 is also lowered, and the bullet feeding nozzle member 80 is also retracted. Then, the sandwiched spherical bullet 79 is pushed up in the direction of the arrow 91 by the next spherical bullet. Although somewhat unreasonable, in the next firing cycle, the spherical bullet 79 having a large scratch is pushed into the spherical bullet holding space of the elastic packing 92 and is pushed out by the air pressure and exits from the muzzle.

  As shown in FIG. 20, if the cam contact member and the arm member are separated and a spring is interposed between the two members, even if a bullet feeding failure as described above occurs, the bullet feeding nozzle member It is possible to prevent damage to the front end portion, the rear end portion of the elastic packing constituting the spherical bullet holding space, and the like. In order to achieve the same purpose, there are other methods as shown in FIGS. 23, 24, and 25, which will be described later.

  FIGS. 16 to 20 show a method in which the bullet feeding nozzle member is inserted into the through hole of the cylinder head member and moved back and forth. Next, the bullet feeding nozzle member is attached so as to directly contact the inner wall of the cylinder. The method of inserting and moving back and forth is shown.

  FIG. 21 shows another embodiment of the present invention in which the cam contact member is pushed backward to lower the bullet feed nozzle member and the bullet feed nozzle member is pushed out by the return spring to feed. The tip of the bullet feeding nozzle member 93 pushes the spherical bullet 94 into the spherical bullet holding space of the elastic member 95 for the purpose of preventing air leakage. The rear end portion of the bullet feeding nozzle member 93 is thick, and the outer peripheral portion thereof is substantially in contact with the cylinder inner wall. In practice, an elastic seal member 96 for preventing air leakage is provided on the outer peripheral portion of the rear end of the bullet feeding nozzle member 93. The engaging portion 97 of the bullet feeding nozzle member 93 and the engaging portion 98 of the arm member 100 are in a matched state, and the action of the return spring 101 causes the bullet feeding nozzle member 93, the cam contact member 99, and the arm member 100 to Are always biased in the direction of the arrow 102. As the piston driving rotor 103 rotates in the direction of the arrow 104, the firing cycle of the electric air gun as described above is repeated.

  FIG. 22 shows another embodiment of the present invention in which the cam contact member is pushed backward to lower the bullet feed nozzle member, and the bullet feed nozzle member is pushed out by the return spring to feed. The tip of the bullet feeding nozzle member 105 pushes the spherical bullet 177 into the spherical bullet holding space of the elastic member 107 for the purpose of preventing air leakage. The rear end portion of the bullet feeding nozzle member 105 is thick, and the outer peripheral portion thereof is substantially in contact with the inner wall of the cylinder. In practice, an elastic seal member 108 for preventing air leakage is provided on the outer peripheral portion of the rear end of the bullet feeding nozzle member 105. In this example, the engaging portion 106 of the bullet feeding nozzle member 105 is a concave annular groove provided on the outer peripheral portion of the rear end of the bullet feeding nozzle member 105 that is thickened. The engaging portion projection 110 of the arm member 109 enters the concave annular groove and is in a state of being matched with the bullet feeding nozzle member 105, and by the action of the return spring 111, the bullet feeding nozzle member 105 and the cam contact member 112 are The arm member 109 is always biased integrally in the direction of the arrow 113. The piston driving rotator 114 rotates in the direction of the arrow 115, so that the firing cycle of the electric air gun as described above is repeated. The difference from the embodiment of FIG. 21 is that a long groove 116 is provided so that the engaging protrusion 110 can pass through the front lower part of the cylinder. Accordingly, the length of the front portion of the arm member 109 can be shortened compared to the embodiment of FIG. 21, and an accident such as the arm member 109 being bent can be prevented. Further, in the embodiment of FIG. 21, an engaging convex portion protrudes at the lower portion of the front portion of the bullet feeding nozzle member and fits into the engaging concave portion of the arm member. In the unit separation type system as shown, it is a little difficult to accurately match the projections and depressions. The situation is the same even if the engaging concave portion protrudes in the lower part of the front portion of the bullet feeding nozzle member and fits into the engaging convex portion of the arm member. In the embodiment of FIG. 22, regardless of the position of the bullet feeding nozzle member 105, the engaging portion 106, which is a concave annular groove, is always in a position where it can be seen from the long groove 116 at the front lower part of the cylinder. At any time, it can be fitted into the projection for engaging the arm member. However, in the type in which the cylinder unit can be separated, in the separated state, the piston is always in the advanced position, so that the bullet feeding nozzle member is also in the advanced position. In order to adjust to this state, it is necessary to work carefully when setting the piston member rotator 114 so that the position of the arm member 109 is as shown in FIG.

  FIG. 23 shows another embodiment of the present invention in which the cam contact member is pushed forward by the function of the sector cam to advance the arm member and the bullet feeding nozzle member is pushed to feed. The feature of the present invention is that the bullet feeding nozzle member is divided into two members, and a spring is interposed between the two members, so that no damage is caused anywhere even if a bullet feeding failure occurs. .

The tip of the bullet feeding nozzle member 117 tries to push the spherical bullet 118 into the spherical bullet holding space of the elastic member 119 for the purpose of preventing air leakage. The rear end portion of the bullet feeding nozzle member 117 is slightly thicker, and the outer peripheral portion thereof is substantially in contact with the hole inner wall of the bullet feeding nozzle member base portion 120. In practice, an elastic seal member 121 for preventing air leakage is provided on the outer peripheral portion of the rear end of the bullet feeding nozzle member 117. In this example, the engaging portion 122 of the bullet feeding nozzle member base 120 is a concave annular groove provided on the front outer peripheral portion of the thick bullet feeding nozzle member base 120. The engaging portion projection 124 of the arm member 123 enters the concave annular groove and is in a state of being matched with the bullet feeding nozzle member base 120, and the bullet spring nozzle member 117 and the bullet feeding nozzle are operated by the return spring 125. The member base 120, the cam contact member 126, and the arm member 123 are always biased integrally in the direction of the arrow 127. At the front lower part of the cylinder, the engaging portion projection 124 of the arm member 123 enters, and a long groove is provided so as to be able to move back and forth about 8 mm. The configuration is the same as that of the embodiment shown in FIG. The piston driving rotator 128 rotates in the direction of the arrow 129, and the firing cycle of the electric air gun as described above is repeated. The spring 130 interposed between the bullet feeding nozzle member 117 and the bullet feeding nozzle member base 120 may have a force of about 1 kilogram weight. Since this spring 130 works only when a bullet feeding failure occurs, even if it has a fairly strong force, it does not have any influence on the normal operation, so that no loss of energy is caused.

  24, in the embodiment shown in FIG. 23, the cam contact member 126 is pushed forward by the function of the sector cam 131 to advance the arm member 123, and the bullet feeding nozzle member 117 and bullet feeding nozzle member are integrally formed therewith. A state in which the base 120 is pressed to feed is depicted. The tip of the bullet feeding nozzle member 117 pushes the spherical bullet 118 into the spherical bullet holding space of the elastic member 119 for the purpose of preventing air leakage. The rise limiting member 132 is pushed up in the direction of the arrow 133 by the bullet feeding nozzle member 117.

  23, in the embodiment of FIG. 23, the normal bullet feeding as shown in FIG. 24 is not performed, the arm member 123 has completed the advancement, and the bullet feeding nozzle member 117 sandwiches the abnormal spherical bullet 134. It shows the situation of being unable to move forward. The piston 135 advances at a high speed and collides with the cushion member 136. If the bullet feeding nozzle member 117 is configured integrally with the bullet feeding nozzle member base 120, the arm member 123 continues to advance while the bullet feeding nozzle member 117 sandwiches an abnormal spherical bullet. Such a situation occurs that the nozzle tip portion is broken or the engaging portion projection 124 of the arm member 123 is broken. If the engagement portion projection 124 of the arm member 123 is broken first, the bullet feeding nozzle member base 120 integrally formed with the bullet feeding nozzle member 117 cannot move forward, and the rear end of the cylinder head 137 It stops at a position away from. In such a state, if the piston 135 moves forward at a high speed and collides with the cushion member 136, the nozzle tip portion is crushed abnormal spherical bullet 134, and naturally the nozzle tip portion is also broken. . The engaging portion projection 124 is broken, the spherical bullet 134 is crushed, and the nozzle tip portion is also broken, resulting in a worst case. It is the spring 130 for preventing nozzle destruction that prevents such a situation from occurring. Even when the state of the state shown in FIG. 25 in which the bullet feeding nozzle member 117 sandwiches the abnormal spherical bullet 134 by the action of the spring 130, only the bullet feeding nozzle member 117 is retracted, and other members. Will be able to repeat normal operation. In the next cycle, the abnormal spherical bullet 134 is pushed up, moved forward, and fired. An abnormal situation occurs in which a spherical bullet is caught mainly by the bullet feeding nozzle portion composed of the bullet feeding nozzle member 117, the bullet feeding nozzle member base 120, and the spring 130 for preventing nozzle destruction. However, various members can be prevented from being broken.

  FIG. 26 shows that a piston 138 provided with a rack gear-shaped uneven portion 144 and a piston spring 139 that always pushes the piston forward are accommodated in the cylinder 151, and the gear-shaped uneven portions are arranged at the lower portion of the center of the cylinder 151. A long groove 140 is provided so as to engage with each other, a bullet feeding nozzle member 141 is arranged in front of the cylinder 151, a cap member 142 is arranged in the rear of the cylinder to constitute a cylinder unit, provided in the gear box 143, and in the piston 138 A piston driving rotator 146 having a concavo-convex portion 145 meshing with the rack gear-like concavo-convex portion 144 formed on the circumferential surface, a speed reduction mechanism disposed between the piston driving rotator and the motor, a cam contact member 147, The arm member 148 is configured integrally with the cam contact member 147 so as to move back and forth. The arranged is obtained by constituting the gearbox unit. Each unit of the cylinder unit and the gear box unit can be assembled as separate finished bodies, and when the two units are combined, the engaging portion 149 of the bullet feeding nozzle member and the tip of the arm member 148 The engaging portion 150 provided in the vicinity matches the direction shown by an arrow 169 and functions as a single unit. In FIG. 26, the engaging portion 149 of the bullet feeding nozzle member has a convex shape and the engaging portion 150 provided in the vicinity of the tip of the arm member 148 has a concave shape, but there is no problem even if the irregularities are reversed. All major members such as cylinders, pistons, piston springs, piston drive rotors, speed reduction mechanisms, cam contact members, and arm members that are integrated with cam contact members and arranged to move back and forth. Compared to the conventional example that was built into the case, the cylinder unit alone can be assembled and inspected in a separate process, and only the gearbox unit can be assembled and inspected in a separate process, allowing division of labor. , Work efficiency is greatly improved. In the conventional example in which all the main members are incorporated into one case, it is very difficult to match the shaft positions of the speed reduction mechanism with the positions of the holes in the gearbox while pushing and shrinking the strong and long piston spring. It was. In addition, when a defect due to an assembly error is found, it has been necessary to disassemble and reassemble everything in the past, but by unitizing according to the present invention, each unit can be checked for defects, Disassembling and reassembling when a defect is found is completed for each unit. Even when disassembling and reassembling, it takes about half of the conventional time.

  In FIG. 27, a piston 152 provided with a rack gear-shaped uneven portion 151 and a piston spring 153 that always pushes the piston forward are accommodated in a cylinder 154, and gear-shaped uneven portions are disposed at a substantially lower center portion of the cylinder 154. A long groove 155 is provided so as to be engaged with each other, a bullet feeding nozzle member 156 is arranged in front of the cylinder 154, and a cap member 157 is arranged in the rear of the cylinder to constitute a cylinder unit, which is provided in the gear box 158 and the piston 152. A piston driving rotator 160 having a rugged portion 159 engaged with the rack gear-like rugged portion 151 on the circumferential surface, a speed reduction mechanism disposed between the piston driving rotator 160 and the motor, and a cam contact member 161. The arm member is configured integrally with the cam contact member 161 so as to move back and forth. Is obtained by constituting the gearbox unit arranged and 62. Each unit of the cylinder unit and the gear box unit can be assembled as separate completed bodies, and when the two units are combined, the engaging portion 163 of the bullet feeding nozzle member base and the arm member 162 The engaging portion 164 provided in the vicinity of the tip matches the direction shown by an arrow 168 and functions as one unit. In FIG. 27, the engaging portion 163 of the bullet feeding nozzle member base is formed in a concave shape and the engaging portion 164 provided in the vicinity of the tip of the arm member 162 is formed in a convex shape. . All major members such as cylinders, pistons, piston springs, piston drive rotors, speed reduction mechanisms, cam contact members, and arm members that are integrated with cam contact members and arranged to move back and forth. Compared to the conventional example that was built into the case, the cylinder unit alone can be assembled and inspected in a separate process, and only the gearbox unit can be assembled and inspected in a separate process, allowing division of labor. , Work efficiency is greatly improved. In the conventional example in which all the main members are incorporated into one case, it is very difficult to match the shaft positions of the speed reduction mechanism with the positions of the holes in the gearbox while pushing and shrinking the strong and long piston spring. It was. In addition, when a defect due to an assembly error is found, it has been necessary to disassemble and reassemble everything in the past, but by unitizing according to the present invention, each unit can be checked for defects, Disassembling and reassembling when a defect is found is completed for each unit. Even when disassembling and reassembling, it takes about half of the conventional time. FIG. 27 shows a unit configuration suitable for an electric air gun modeled on a US military officially adopted gun called the M16 series or M4 series. An engagement member 165 is provided in the lower rear part of the cylinder unit, and a cylinder side engagement hole 166 is provided. On the other hand, a gear box side engagement hole 167 is provided in the rear upper part of the gear box unit. The two units are arranged in the gun body as shown in FIG. 29, and the upper receiver 170 is rotated around the receiver pivot pin 171 so as to match the lower receiver 172. After that, by setting a take-down pin (not shown) that penetrates the cylinder side engagement hole 166 and the gear box side engagement hole 167, the cylinder unit and the gear box unit are matched, and an electric air gun is obtained. Be able to function. 29 and 30, the engaging portion 163 of the bullet feeding nozzle member base is convex, and the engaging portion 164 provided near the tip of the arm member 162 is concave. In FIG. 23, FIG. 24, and FIG. 27, the rear of the cylinder is slightly contracted compared to the drawings from FIG. 16 to FIG. This is a measure for realizing the disassembling method as shown in FIG. Of course, the stroke of the piston is also set shorter.

  FIG. 28 depicts a state in which an upper receiver 204 of an electric air gun manufactured by Tokyo Marui is rotated upward. Details have already been mentioned.

  FIG. 29 shows one embodiment of the present invention. Details have already been mentioned.

  FIG. 30 illustrates a state where the cylinder unit is extracted in the direction of the arrow 173 in the embodiment of FIG. Details have already been mentioned.

  FIG. 31 is a copy of a part of an actual gun disassembly manual. Details have already been mentioned.

Similarly, FIG. 32 is a copy of a part of an actual gun disassembly manual. Details have already been mentioned.
FIG. 33 shows another example in which the gear box unit adopting the method of pushing the arm contact member forward with the cam in the embodiment of FIG. 29 is replaced with the gear box unit adopting the method of pushing the arm contact member backward with the cam pin. This is an example.

  The nozzle method can be freely selected according to the type of the actual gun that is the model of the electric air gun. Since the nozzle does not necessarily need to be positioned at the center of the cylinder, it can be applied to various electric air guns from large to small.

It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of product instruction manual which showed the conventional idea, and corrected numbers. It is the figure which copied a part of the magazine article which showed the conventional idea, and corrected numbers. It is the figure which copied a part of the magazine article which showed the conventional idea, and corrected numbers. It is the figure which copied a part of the magazine article which showed the conventional idea, and corrected numbers. It is the figure which copied a part of the magazine article which showed the conventional idea, and corrected numbers. It is the figure which copied a part of the magazine article which showed the conventional idea, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is the figure which copied a part of the gazette which showed the conventional invention, and corrected numbers. It is explanatory drawing which showed the implementation method of this invention. Example 1 It is explanatory drawing which showed the implementation method of this invention. Example 1 It is explanatory drawing which showed the implementation method of this invention. (Example 2) It is explanatory drawing which showed the implementation method of this invention. (Example 2) It is explanatory drawing which showed the implementation method of this invention. (Example 2) It is explanatory drawing which showed the implementation method of this invention. Example 3 It is explanatory drawing which showed the implementation method of this invention. Example 4 It is explanatory drawing which showed the implementation method of this invention. (Example 5) It is explanatory drawing which showed the implementation method of this invention. (Example 5) It is explanatory drawing which showed the implementation method of this invention. (Example 5) It is explanatory drawing which showed the implementation method of this invention. (Example 6) It is explanatory drawing which showed the implementation method of this invention. (Example 7) It is explanatory drawing which showed the conventional product. It is explanatory drawing which showed the implementation method of this invention. (Example 8) It is explanatory drawing which showed the implementation method of this invention. (Example 8) It is the figure which copied a part of disassembly manual of a real gun. It is the figure which copied a part of disassembly manual of a real gun. It is explanatory drawing which showed the implementation method of this invention. Example 9

Explanation of symbols

Barrel 1, hole 2 for feeding, spring 3, spherical bullet 4, cylinder 5, cylinder head 6, air discharge nozzle 7, pipe-like member 8, connecting member 9, spherical bullet 10, elastic packing member 11, return spring 12 , Body case portion 13, gear 14, connecting member 15, loading nozzle 16, loading nozzle 17, guide member 18, cylinder 19, guide member 20, piston 21, piston spring 22, spring guide 23, outlet base head 24, air Discharge nozzle 25, pipe member 26, connecting member 27, cylinder 28, cylinder head 29, air discharge nozzle 30, air discharge nozzle 31, pipe member 32, cylinder 33, cylinder head 34, air discharge nozzle 35, pipe member 36, cylinder 37, cylinder head 38, air discharge 39, elongate member 40, piston 41, arrow 42, bullet feeding nozzle member 44, arm member 48, cam contact member 50, piston drive rotor 51, cam pin 52, arrow 53, arrow 54, piston 55, rack gear Rugged portion 56, elastic member 57, arrow 58, spherical bullet 59, arrow 60, return spring 61, arrow 62, barrel 63, animal chamber 64, return spring 65, bullet feed nozzle member 66, elastic packing 67, spherical Bullet 68, barrel 69, arrow 70, piston drive rotor 71, fan-shaped cam 72, cam contact member 73, arrow 74, piston 75, piston spring 76, ascent restriction member 77, arrow 78, spherical bullet 79, for bullet feed Nozzle member 80, piston drive rotor 81, arrow 82, fan-shaped cam 83, cam contact member 84, arrow 85, arm member 86, spring 87, piston 88, Stone head 89, cushion material 90, arrow 91, elastic packing 92, bullet feed nozzle member 93, spherical bullet 94, elastic member 95, elastic seal member 96, engagement portion 97, engagement portion 98, cam contact member 99, arm member 100, return spring 101, arrow 102, piston drive rotor 103, arrow 104, bullet feed nozzle member 105, spherical bullet 106, elastic member 107, elastic body seal member 108, arm member 109, engagement Convex 110, return spring 111, cam contact member 112, arrow 113, piston drive rotor 114, arrow 115, long groove 116, bullet feed nozzle member 117, spherical bullet 118, elastic member 119, bullet feed nozzle member base 120, an elastic seal member 121, an engaging portion 122, an arm member 123, an engaging portion convex 124, a return spring 125, a cam contact member 126, Arrow 127, piston driving rotor 128, arrow 129, spring 130, fan-shaped cam 131, ascent restriction member 132, arrow 133, abnormal spherical bullet 134, piston 135, cushion member 136, cylinder head 137, piston 138, piston spring 139, long groove 140, bullet feeding nozzle member 141, cap member 142, gear box 143, rack gear-like uneven portion 144, uneven portion 145, piston driving rotor 146, cam contact member 147, arm member 148, engaging portion 149 , Engagement portion 150, rack gear-shaped uneven portion 151, piston 152, piston spring 153, cylinder 154, long groove 155, bullet feeding nozzle member 156, cap member 157, gear box 158, uneven portion 159, piston driving rotor 160 , Cam contact member 16 , Arm member 162, engagement portion 163, engagement portion 164, engagement member 165, cylinder side engagement hole 166, gear box side engagement hole 167, arrow 168, arrow 169, upper receiver 170, receiver pivot pin 171, Lower receiver 172, arrow 173, hole 174, piston 175, arrow 176, spherical bullet 177,
Receiver pivot pin 200, upper receiver 201, lower receiver 202, cylindrical part 203, upper receiver 204, lower receiver 205, cylinder 206, piston spring 207, nozzle 208, engine case 209

Claims (9)

A cylinder, a piston arranged to move back and forth in a certain range at a certain position, a spring that always pushes the piston forward, and an uneven part that meshes with a rack gear-like uneven part provided on the piston on the circumferential surface A cam provided on a side surface portion of a piston driving rotor in an electric air gun having a piston driving rotor and a speed reduction mechanism disposed between the piston driving rotor and a motor as main components. And a cam contact member arranged to move back and forth by coming into contact with the cam and an arm member that is integrally formed with the cam contact member and moves back and forth, the through hole provided in the cylinder head member The bullet feed nozzle member arranged so as to be able to move back and forth while contacting the inner wall surface is configured to move back and forth, and can be used for one rotation of the piston driving rotator. The bullet feeding nozzle member performs one reciprocating motion, and pushes one spherical bullet supplied from the magazine into the spherical bullet holding portion provided near the rear end of the barrel. Bullet mechanism. A cylinder, a piston arranged to move back and forth in a certain range at a certain position, a spring that always pushes the piston forward, and an uneven part that meshes with a rack gear-like uneven part provided on the piston on the circumferential surface A cam provided on a side surface portion of a piston driving rotor in an electric air gun having a piston driving rotor and a speed reduction mechanism disposed between the piston driving rotor and a motor as main components. And a cam contact member arranged so as to move back and forth by coming into contact with the cam and an arm member which is integrally formed with the cam contact member and moves back and forth, and can move back and forth while contacting the inner wall surface of the cylinder. The bullet feed nozzle member is configured to move back and forth so that the bullet feed nozzle member is rotated once for each rotation of the piston drive rotor. Reciprocating performed, only one shot spherical bullets supplied from the magazine, characterized in that pressed into the spherical bullets holding portion provided in the vicinity of the rear end of the barrel, the bullet feed mechanism. A cylinder, a piston arranged to move back and forth in a certain range at a certain position, a spring that always pushes the piston forward, and an uneven part that meshes with a rack gear-like uneven part provided on the piston on the circumferential surface A cam provided on a side surface portion of a piston driving rotor in an electric air gun having a piston driving rotor and a speed reduction mechanism disposed between the piston driving rotor and a motor as main components. And a cam contact member arranged to move back and forth by coming into contact with the cam and an arm member that is integrated with the cam contact member and moves back and forth to move the bullet feeding nozzle member back and forth. And the bullet feeding nozzle member is divided into a nozzle front member and a nozzle base member, and a spring is provided between the nozzle front member and the nozzle base member. The nozzle front member is assembled by being urged by a spring in a direction that protrudes forward from the nozzle base member, and the nozzle base member is arranged to move back and forth while contacting the inner wall surface of the cylinder. It is arranged so that it can move back and forth while coming into contact with the inner wall surface of the through hole provided in the base member, and the bullet feeding nozzle member performs one reciprocating motion for one rotation of the piston driving rotator. The supplied spherical bullet is pushed into the spherical bullet holding part provided near the rear end of the barrel, and when the feeding failure occurs due to the engagement of the spherical bullet, the nozzle front member moves backward, A bullet feeding mechanism configured to prevent the front end portion of the front member from being broken. 4. The feed according to claim 1, wherein the cam provided on the side surface of the piston driving rotor is a convex pin that plays a role similar to that of the cam. Bullet mechanism. Along with the rotation of the piston driving rotator, the cam provided on the side surface of the piston driving rotator contacts the cam contact member and pushes the cam contact member rearward. The bullet feeding nozzle member is integrally pushed backward, and at least one of the cam contact member, the arm member, and the bullet feeding nozzle member is linked to a spring member that biases forward, and the piston The cam contact member, the arm member, and the bullet feeding nozzle member are always urged forward in an integrated manner regardless of the presence or absence of contact with the cam provided on the side surface of the drive rotor. The bullet feeding mechanism according to claim 1, claim 2, or claim 3. Along with the rotation of the piston driving rotator, the cam provided on the side surface of the piston driving rotator contacts the cam contact member and pushes the cam contact member forward, and accordingly, the cam contact member and the arm member The bullet feed nozzle member is integrally pushed forward, and at least one of the cam contact member, the arm member, and the bullet feed nozzle member is linked to a spring member that biases backward, and the piston The cam contact member, the arm member, and the bullet feeding nozzle member are always urged to the rear regardless of the presence or absence of contact with the cam provided on the side surface of the drive rotor. The bullet feeding mechanism according to claim 1, claim 2, or claim 3. The arm member and the bullet feeding nozzle member are separate parts, and at the time of assembly, the arm member engaging portion and the bullet feeding nozzle member engaging portion are engaged, and the arm member and the bullet feeding nozzle member are engaged. The bullet feeding mechanism according to claim 1, wherein the bullet feed mechanism is capable of moving integrally with each other. The piston with the rack gear-shaped irregularities and the spring that always pushes the piston forward are housed in the cylinder, and a long groove is provided at the lower part of the cylinder so that the gear-shaped irregularities can mesh with each other. A piston nozzle member is arranged, and a cap member is arranged behind the cylinder to constitute a cylinder unit. The gear box is provided with an uneven portion that engages with a rack gear-like uneven portion provided on the piston for driving the piston. A rotating body, a speed reduction mechanism disposed between a piston driving rotor and a motor, a cam contact member, and an arm member that is configured integrally with the cam contact member and arranged to move back and forth. The gearbox unit is composed of each unit, and each unit can be assembled as a separate complete body. The engagement portion of the bullet feeding nozzle member and the engagement portion provided in the vicinity of the tip of the arm member are matched to each other and function as one unit. The bullet feeding mechanism according to claim 2 or claim 3. The arm member is divided into a front arm member and a rear arm member, a spring is disposed between the front arm member and the rear arm member, and the front arm member is moved by the spring so as to jump forward from the rear arm member. It is assembled by being energized, and it is configured with a meshing part so that it does not actually jump out, and when a bullet feed failure occurs due to the biting of a spherical bullet, the front arm member retracts, the tip of the nozzle front member, etc. The bullet feeding mechanism according to claim 1, wherein the bullet feeding mechanism is configured to prevent the damage of the bullet.