JP2005329500A - Telescopic arm device and prize acquisition game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size and weight of a telescopic arm device.
A telescopic arm device 100 according to the present invention includes a proximal arm 110, a cylindrical portion 120 that is rotatably fitted in the proximal arm 100, and a rotational drive that rotationally drives the cylindrical portion 120. Part 170, a tubular distal arm 150 fitted in the tubular part 120 so as to be movable in the direction of the rotation axis of the tubular part 120, a proximal arm 110 and a tubular part 120, 150 includes a base arm 110 and a telescopic internal arm 160 connected to the tip arm 150 so that relative rotation with respect to the base arm 110 is restricted, and a screw groove is provided on the outer periphery of the tip arm 150. In addition, a protrusion that can be screwed into the thread groove is provided on the inner peripheral portion of the cylindrical portion 120, and the relative rotation of the distal end arm 150 with respect to the proximal end arm 110 is restricted as the cylindrical portion 120 rotates. The cylindrical portion 120 is configured to be movable in the direction of the rotation axis.
[Selection] Figure 6

Description

  The present invention relates to a telescopic arm device and a prize acquisition game machine including the telescopic arm device.

The telescopic arm device is used in various devices such as a crane, an industrial robot, and a prize acquisition means for a prize acquisition game machine. For example, the telescopic arm device disclosed in Japanese Patent Application Laid-Open No. 8-155576 is mainly composed of a plurality of arms that are slidably fitted to each other, and is stretched by a winding device (wire operating means). Expansion and contraction operations are performed by winding or unwinding the wire for contraction and contraction, respectively. In addition, a telescopic arm device that performs a telescopic operation using a cylinder (hydraulic cylinder or pneumatic cylinder) is also often used.
Japanese Patent Laid-Open No. 8-155576 JP-A-8-295492

  However, since the conventional telescopic arm device performs the telescopic operation using the winding device, the cylinder, or the like as described above, the structure of the telescopic arm device becomes complicated, which is a cause of increasing the size of the device.

  The present invention has been made in view of such a problem, and an object thereof is to reduce the size and weight of the telescopic arm device. Moreover, it aims at providing the prize acquisition game machine provided with this expansion-contraction arm apparatus.

  In order to achieve such an object, the telescopic arm device according to the present invention includes a base arm, a cylindrical part rotatably fitted in the base end arm, and a rotation drive unit that rotationally drives the cylindrical part. A cylindrical distal arm that is fitted inside the cylindrical portion so as to be movable in the direction of the rotation axis of the cylindrical portion, and a relative rotation of the distal arm with respect to the proximal arm that is inherent in the proximal arm and the cylindrical portion And a telescopic inner arm connected to the distal arm and the distal arm so as to be regulated, a screw groove is provided on the outer peripheral portion of the distal arm, and a screw groove is provided on the inner peripheral portion of the cylindrical portion. A projecting portion that can be screwed is provided, and the distal end arm is configured to be movable in the direction of the rotation axis in a state where relative rotation with respect to the proximal end arm is restricted as the cylindrical portion rotates.

  Moreover, in the above-mentioned invention, the cylinder fitted between the cylindrical part and the tip arm so as to be movable in the direction of the rotation axis with the cylindrical part and the tip arm and to be rotatable around the rotation axis of the cylindrical part. The intermediate arm is provided, a screw groove that is screwed with the protruding portion of the cylindrical portion is provided on the outer peripheral portion of the intermediate arm, and a protruding portion that can be screwed with the screw groove of the tip arm is provided on the inner peripheral portion of the intermediate arm Is preferably provided.

  Furthermore, in the above-described invention, a plurality of intermediate arms may be provided in a nested manner.

  In addition, a prize acquisition game machine according to the present invention includes a prize placing unit on which a prize is placed, a prize moving device for moving a prize placed on the prize placing unit to a predetermined drop position, and a prize moving device. An operating device that performs an operation for operating the prize moving device by operating the operating device to activate the prize moving device and moving the prize to a predetermined drop position using the prize moving device. In the prize acquisition game machine configured to acquire a prize by dropping a prize placed on the prize from a predetermined dropping position, the prize moving device is configured to receive the prize placed on the prize placing unit in a predetermined manner. The telescopic arm device is configured to have a telescopic arm device that can be pushed out or pulled out to a dropping position, and the telescopic arm device is the telescopic arm device according to any one of claims 1 to 3.

  According to the present invention, since the tip arm can be moved in the direction of the rotation axis of the cylindrical portion by rotating the cylindrical portion, it is possible to perform the expansion / contraction operation of the expansion / contraction arm device with a simpler structure, The telescopic arm device can be reduced in size and weight.

  In addition, since the intermediate arm is provided between the cylindrical portion and the tip arm, the expansion / contraction operation range of the expansion / contraction arm device can be further increased.

  Furthermore, by providing a plurality of intermediate arms in a nested manner, it is possible to further increase the expansion / contraction operation range of the expansion / contraction arm device.

  In addition, since the prize acquisition game machine is configured to include the telescopic arm device as described above, the extension arm apparatus is reduced in size and weight, so that the structure of the prize acquisition game machine can be simplified, and the prize is given. It can be expected to reduce the manufacturing cost of the acquired game machine.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a prize acquisition game machine 1 provided with the telescopic arm device according to the present invention. This prize acquisition game machine 1 is mainly composed of a game machine body 2 and a prize room 3 disposed on the game machine body 2 and having various prizes GF placed therein.

  The prize room 3 is surrounded by transparent plates 3a on the front and left and right so that the prize GF in the prize room 3 can be recognized from the front and left and right. The back of the prize room 3 is covered with a plate member 3b. Inside the prize room 3, a plurality of prize placement parts 4 on which prizes GF are placed, a drawer means 5 for pulling out the prize placement part 4 forward, and a drawer means 5 at a desired position in the prize room 3 A moving device 6 to be moved and a prize drop opening (not shown) opened in front of the bottom of the prize room 3 are provided.

  A plurality of prize placement units 4 are arranged in a substantially vertical plane in the prize room 3. Thereby, when the prize placement unit 4 is inclined and the prize GF falls forward, it is possible to prevent the prize GF falling from coming into contact with another prize placement part 4. It is also possible to arrange various types of prize placing units 4 in the prize room 3 so that prizes having different sizes can be arranged in the prize room 3.

  On the front portion of the game machine body 2, an up / down operation switch for operating a prize outlet 7 communicating with a prize drop port (not shown) inside the game machine body 2 and a drawer means 5 (moving device 6). 8a, a left / right operation switch 8b, and a coin slot 9 are provided. Further, the drawer means 5, the prize take-out port 7, the operation switches 8a and 8b, and the coin slot 9 are provided on the left and right of the prize acquisition game machine 1, respectively, so that two players can play a game at the same time. ing. A premium acquisition game machine for one person or a prize acquisition game machine for three persons (multiple persons) may be used.

  As shown in FIGS. 2 and 3, the prize placing unit 4 includes a tray 41 on which the prize GF is placed, a first tray base 42 on which the tray 41 is fixed and held, and the first tray base 42 swings. The second tray base 46 is pivotally connected to the main body, and is accommodated in a tray accommodating portion 32 (see FIG. 2) disposed inside the prize room 3 so as to be slidable in the front-rear direction. The tray accommodating portion 32 is formed in a bowl shape by a processing means such as cutting, bending, welding, etc. using a metal plate material, and left and right on a shelf portion 31 (see FIG. 2) disposed inside the prize room 3. They are fixed so that they line up.

  As shown in FIG. 2, the first rail portion 33 is formed at the left and right lower portions of the tray housing portion 32 so as to extend in the front-rear direction, and the front wheels 47 and the rear wheels 48 provided on the second tray base 46 are arranged. The upward movement, that is, the upward movement of the second tray base 46 is restricted.

  Further, the second rail portion 35 is formed on the left and right upper portions of the tray accommodating portion 32 so as to extend in the front-rear direction, and the second guide roller 44 provided on the first tray base 42 moves upward, that is, The upward movement of the first tray base 42 is restricted. In front of the second rail portion 35, a guide portion 36 is formed extending vertically, and the first tray is interposed between the guide portion 36 and a bent portion 35a formed at the front end of the second rail portion 35. A roller passage portion 37 through which the second guide roller 44 of the base 42 can pass is formed.

  Then, as shown by a two-dot chain line in FIG. 3, the second guide roller 44 of the first tray base 42 moves the roller passing portion 37 when the prize placing portion 4 reaches a predetermined pulling position and swings forward. It has come to pass. At this time, the first guide roller 43 of the first tray base 42 passes through the gap between the guide portion 36 and the shelf portion 31 and comes into contact with the upper front side of the guide portion 36 (FIG. 3). (See the two-dot chain line).

  Now, as shown in FIGS. 2 and 3, the tray 41 of the prize placing unit 4 is formed in a box shape opened upward using a resin material, and the prize GF is placed thereon. The bottom of the tray 41 is fixed to the first tray base 42 using fixing means such as screws. 2 and 3, the front end portion of the tray 41 includes a rod portion 81 coupled to the tray 41, a string-like member 82 suspended from the front end of the rod portion 81, and a string-like member 82. A target member 83 provided at the lower end is provided. In FIG. 3, the description of the string-like member 82 and the target member 83 is omitted.

  The rod portion 81 is formed in a small-diameter tubular shape using a metal material or a resin material, and is disposed between the prize placing portion 4 (tray 41) and the string-like member 82. The string member 82 is formed into a string using a fiber material (for example, thread or cloth), a leather material, a resin material (for example, nylon), a metal material (for example, a chain member or a key chain), and the like. It is suspended from the front end of the rod portion 81. The target member 83 is formed in a ring shape using a metal material or a resin material, and the upper end of the target member 83 is the lower end of the string-like member 82 so that the (target member 83) faces the front side of the prize acquisition game machine 1. Connected to the part.

  The first tray base 42 on which the tray 41 is fixedly held is formed in a plate shape in which the left and right sides are bent downward by a processing means such as cutting and bending using a metal plate material. Left and right first guide rollers 43 are provided below the side portion of the first tray base 42, and are configured to be able to pass between the bottom portion of the tray accommodating portion 32 and the second rail portion 35. The left and right second guide rollers 44 are provided behind the side of the first tray base 42, and are similarly configured to pass between the bottom of the tray housing portion 32 and the second rail portion 35. Yes. As shown in FIG. 4, a first pivot part 45 is formed at the center of the first tray base 42 so as to extend downward, and the second tray base 46 is connected via a pivot shaft 71. It is designed to be pivoted.

  The second tray base 46 is formed in a plate shape in which the left and right sides are bent downward by processing means such as cutting and bending using a metal plate material, and is configured to substantially overlap the lower surface side of the first tray base 42. The Below the side of the second tray base 46, left and right front wheels 47 and rear wheels 48 are provided, which are configured to be able to roll on the bottom of the tray housing portion 32. As a result, the prize placement unit 4 can be slid in the front-rear direction within the tray storage unit 32. Further, as shown in FIG. 4, a second pivoting portion 49 is formed that extends forward of the side of the second tray base 46 and pivots with the first pivoting portion 45 of the first tray base 42. .

  Further, the pivoting shaft 71 is provided with a tilting means 72 capable of tilting the tray 41 (the prize placing unit 4). The tilting means 72 swings the swinging member 72a pivotally connected to the first pivoting portion 45, the sliding contact member 72b connected to the rear end portion of the swinging member 72a, the tray 41 and the first tray base 42. An inclination urging spring 73 that urges the moving member 72a in an inclining direction is configured.

  The swing member 72a is formed in a plate shape in which the left and right front portions are bent upward using a metal plate material, and the front end portion is pivotally connected to the first pivot portion 45 via the pivot shaft 71. The first tray base 42 swings with respect to the swing member 72a. The slidable contact member 72b is formed in a thin plate shape with a rear portion bent downward using a metal plate material, and a rear end portion is slidably contacted with a slidable contact plate 77 provided in the tray accommodating portion 32. The inclination urging spring 73 is a torsion coil spring attached to the pivot shaft 71 and is configured to urge the tray 41 and the first tray base 42 in a direction inclined forward with respect to the swing member 72a. .

  In the prize placing section 4, the rear end of the sliding contact member 72b is in sliding contact with the sliding contact plate 77 provided at the bottom of the tray accommodating section 32, and the tray 41 and the first tray base 42 are attached to the inclined biasing spring 73. It is accommodated in the tray accommodating part 32 in the state which received force. When the prize placing section 4 reaches a predetermined pull-out position, the second guide roller 44 of the first tray base 42 passes through the roller passage section 37 of the tray accommodating section 32 and the first guide of the first tray base 42. The roller 43 passes through the gap between the guide portion 36 and the shelf portion 31 of the tray accommodating portion 32, and the tray 41 and the first tray base 42, that is, the prize placing portion 4 are swung forward. .

  Meanwhile, as shown in FIG. 4, the above-described sliding contact plate 77 and a base plate 75 that supports the sliding contact plate 77 are provided in the center of the bottom of the tray housing portion 32. The base plate 75 is formed in a plate shape extending in the front-rear direction using a metal plate material. In the base plate 75, a plurality of steel ball holding holes 75a (see FIG. 5) are formed at predetermined intervals, and the steel balls 76 are respectively disposed in the steel ball holding holes 75a.

  The sliding plate 77 is formed in a thin plate shape that extends in the front-rear direction according to the shape of the base plate 75 using a metal plate material. As shown in FIG. 4, the base plate 75 and the slidable contact plate 77 are fixedly held by a plate holding portion 78 formed in the tray accommodating portion 32 in a state of being stacked in this order, and slid on the slidable contact plate 77. The rear end portion of the contact member 72b is in sliding contact. In the sliding contact plate 77, as shown in FIG. 5, a plurality of passage holes 77a are formed so as to be aligned with the steel ball holding holes 75a. The diameter of the passage hole 77a is slightly smaller than the diameter of the steel ball 76, and the steel ball 76 is held inside the steel ball holding hole 75a in a state where the sliding contact plate 77 is superimposed on the base plate 75. At the same time, the upper part of the steel ball 76 passes through the passage hole 77 a to form a protrusion that protrudes from the upper part of the sliding contact plate 77.

  Thereby, since the sliding contact member 72b is formed in a thin plate shape whose rear portion is bent downward and inclined, when the prize placing portion 4 slides forward, the sliding contact member 72b is positioned above the steel ball 76 (protrusion portion). ) Can be passed relatively smoothly, but when the prize placing portion 4 slides backward, the sliding contact member 72b is slightly caught when passing the upper part (protrusion) of the steel ball 76, and the prize placing portion 4 Requires a relatively large force to move backward. That is, the sliding resistance for sliding backward of the sliding contact member 72b is larger than the sliding resistance for sliding forward (of the sliding contact member 72b). Therefore, when the prize placing section 4 is pulled out using the drawer means 5, even if the locking section 52 of the drawer means 5 comes into contact with the tray 41 or the like of the prize placing section 4, the prize placing section 4 is It is possible to prevent the rearward movement easily.

  Further, the protrusions formed by the steel balls 76 are continuously provided in the direction in which the sliding contact plate 77 extends, that is, in a direction slightly inclined with respect to the front-rear direction, which is the moving direction of the prize placing portion 4. It is preferable. If it does in this way, it can prevent that the upper part (projection part) of the steel ball 76 slidably contacts only a part of sliding contact member 72b, and a part of sliding contact member 72b will wear quickly.

  As shown in FIGS. 6 and 7, the pull-out means 5 is mainly composed of a locking device 51 and a telescopic arm device 100 that moves the locking device 51 in the front-rear direction. As shown in FIG. 6, the locking device 51 includes a locking portion 52 that can be locked to the target member 83, a swing coupling member 54 that is pivotably pivoted to the locking portion 52, and a locking portion. 52 and a rocking connecting member 54, and a locking portion biasing spring 57 attached to the rocking shaft 56.

  As shown in FIG. 8, the locking portion 52 is formed in a bowl shape having two claws that can be locked to the target member 83, and is swingable to the swing connecting member 54 using the swing shaft 56. It is pivoted. Thereby, the structure of the latching | locking part 52 can be simplified. Further, as shown in FIG. 6, the locking portion 52 has a vertical position where the locking portion 52 faces in a substantially vertical direction and a rocking position where the locking portion 52 faces in the front lower direction with respect to the rocking connection member 54. It is designed to pivot freely between the two. A protrusion screw 53 is provided in the vicinity of the distal end portion of the locking portion 52 so that the locking portion 52 can be easily locked to the target member 83.

  As shown in FIGS. 6 and 7, the swing coupling member 54 is coupled to the distal end of the distal arm 150 configured in the telescopic arm device 100, whereby the locking portion 52 is connected to the distal end of the distal arm 150. It is swingably connected. A sensor abutting portion 55 is formed in the lower part of the swing coupling member 54 so as to extend downward, and is configured to be able to abut on the sensor plate 180 of the telescopic arm device 100. The locking portion biasing spring 57 is a torsion coil spring attached to the swing shaft 56 and is configured to apply a biasing force toward the vertical position to the locking portion 52.

  As shown in FIG. 6, the telescopic arm device 100 is inserted into the base end arm 110, the cylindrical portion 120 rotatably fitted in the base end arm 110, and the cylindrical portion 120. First intermediate arm 130, second intermediate arm 140 inserted into first intermediate arm 130, distal arm 150 inserted into second intermediate arm 140, proximal arm 110, and distal arm 150, and an internal arm 160 connected to 150, and a rotational drive unit 170 that rotationally drives the cylindrical part 120. Each arm 110, 130, 140, 150 has a so-called nested structure and is configured to be extendable in the front-rear direction (that is, in the direction of the rotation axis of the cylindrical portion 120).

  The proximal arm 110 is formed in a cylindrical shape using a metal material, and is attached to the casing 174 of the rotation driving unit 170. A window 111 is formed on the side of the proximal arm 110 so that the rotating member 173 of the rotation driving unit 170 can pass therethrough. A bottomed cylindrical first holding member 112 is attached to the proximal end portion of the proximal end arm 110, and a cylindrical second holding member 113 is attached to the distal end portion of the proximal end arm 110. The cylindrical portion 120 is fitted and held inside the proximal arm 110 using the two holding members 112 and 113. Further, a plurality of rotating balls 114 are provided between the holding members 112 and 113 and the cylindrical portion 120 so that the cylindrical portion 120 can smoothly rotate inside the proximal arm 110. Yes. The base end portion of the base end arm 110 is closed by the bottomed cylindrical first holding member 112.

  The cylindrical portion 120 is formed into a cylindrical shape using a metal material, and is fitted and held rotatably inside the proximal arm 110 as described above. A V-groove 121 is formed on the outer peripheral portion of the cylindrical portion 120 in accordance with the position of the window portion 111 of the proximal arm 110, and an O-ring 173 a provided on the rotating member 173 comes into contact therewith. . A cylindrical first screw-shaped member 125 is press-fitted and attached to the tip of the inner peripheral portion of the cylindrical portion 120.

  The first screw member 125 is formed in a cylindrical shape using a resin material such as polyacetal resin, and a first protrusion 126 that can be screwed into the first screw groove 131 of the first intermediate arm 130 is formed on the inner peripheral portion. Is done. The first protrusion 126 is a male screw-shaped protrusion (for example, a male screw-shaped protrusion formed by a screw rotation angle of 175 degrees) formed in accordance with the shape of the first screw groove 131, and is the first It is provided at four locations on the inner periphery of the screw-shaped member 125 (that is, at four locations on the tip of the inner periphery of the cylindrical portion 120).

  The first intermediate arm 130 is formed in a cylindrical shape using a metal material, and can be moved in the front-rear direction (the rotational axis direction of the cylindrical portion 120) inside the cylindrical portion 120 using the first screw-like member 125. And is fitted and held so as to be rotatable about the rotation axis of the cylindrical portion 120. A first screw groove 131 (right screw) that can be screwed with the first protrusion 126 of the first screw-like member 125 is formed over the entire outer periphery of the first intermediate arm 130, and the cylindrical portion 120 (and The first intermediate arm 130 moves in the front-rear direction (in the direction of the rotation axis of the cylindrical portion 120) with the rotation of the one screw-shaped member 125). A cylindrical second screw-shaped member 135 is press-fitted and attached to the distal end of the inner periphery of the first intermediate arm 130.

  Similar to the first screw-like member 125, the second screw-like member 135 is formed into a cylindrical shape using a resin material such as polyacetal resin, and the inner periphery of the second screw-like member 135 is screwed with the second screw groove 141 of the second intermediate arm 140. A second projecting portion 136 that can be mated is formed. Similarly to the first protrusion 126, the second protrusion 136 is a male screw-shaped protrusion formed according to the shape of the second screw groove 141 (for example, a male screw formed by a screw rotation angle of 175 degrees). And is provided at four locations on the inner peripheral portion of the second screw-shaped member 135 (that is, four locations on the distal end of the inner peripheral portion of the first intermediate arm 130).

  Similarly to the first intermediate arm 130, the second intermediate arm 140 is formed in a cylindrical shape using a metal material, and the second intermediate arm 130 is used in the front-rear direction (tubular shape) using the second screw-like member 135. It is fitted and held so as to be movable in the direction of the rotation axis of the portion 120 and rotatable about the rotation axis of the cylindrical portion 120 (first intermediate arm 130). A second screw groove 141 (right screw) that can be screwed with the second protrusion 136 of the second screw-like member 135 is formed over the entire outer periphery of the second intermediate arm 140, and the first intermediate arm 130 (and As the second screw-like member 135) rotates, the second intermediate arm 140 moves in the front-rear direction (in the direction of the rotation axis of the tubular portion 120). A cylindrical third screw member 145 is press-fitted and attached to the distal end of the inner peripheral portion of the second intermediate arm 140.

  Similar to the first screw member 125, the third screw member 145 is formed in a cylindrical shape using a resin material such as polyacetal resin, and can be screwed into the third screw groove 151 of the tip arm 150 on the inner periphery. A third protrusion 146 is formed. Similarly to the first protrusion 126, the third protrusion 146 is a male screw-like protrusion formed in accordance with the shape of the third screw groove 151 (for example, a male screw formed by a screw rotation angle of 175 degrees). And is provided at four locations on the inner peripheral portion of the third screw-like member 145 (that is, four locations on the tip of the inner peripheral portion of the second intermediate arm 140).

  The distal arm 150 is formed in a cylindrical shape using a metal material, and can be moved in the front-rear direction (the rotational axis direction of the cylindrical portion 120) inside the second intermediate arm 140 using the third screw-like member 145. Fit and hold. A third screw groove 151 (right screw) that can be screwed with the third protrusion 146 of the third screw-like member 145 is formed over the entire outer periphery of the distal arm 150, and the second intermediate arm 140 (and third screw) is formed. With the rotation of the screw member 145), the distal arm 150 moves in the front-rear direction (in the direction of the rotation axis of the cylindrical portion 120). A cylindrical locking device fixing member 155 is fixed inside the distal end of the distal arm 150, and the swing coupling member 54 of the locking device 51 is screwed (coupled) to the locking device fixing member 155. It has become so.

  The inner arm 160 is a multi-stage arm provided in a plurality of stages in a nested manner, and is configured to be extendable in the front-rear direction (that is, the rotation axis direction of the cylindrical portion 120). The inner arm 160 is attached to the proximal end portion of the proximal end arm 110 in a state of being included in the proximal end arm 110 and the cylindrical portion 120 and the first intermediate arm 130 and the second intermediate arm 140. The member 112 is connected to the proximal end of the distal arm 150, and relative rotation of the distal arm 150 with respect to the proximal arm 110 is restricted regardless of the rotation of the first intermediate arm 130 and the second intermediate arm 140. .

  The rotation drive unit 170 is mainly configured by a DC motor 171, a rotation member 173 that is rotationally driven by the DC motor 171, and a housing unit 174 that accommodates these members. The motor shaft 172 of the DC motor 171 is connected to the rotating member 173 via a connecting shaft 175 and a torque limiter 177 provided at the base end of the connecting shaft 175, and the rotating member 173 is rotated with the rotation of the motor shaft 172. Is designed to rotate. Further, the distal end portion of the connecting shaft 175 is connected to the rotating member 173 via the one-way clutch 176.

  In the one-way clutch 176, when the connecting shaft 175 rotates forward (for example, rotates clockwise when viewed from the base end side of the telescopic arm device 100), the rotational force of the connecting shaft 175 is not transmitted, and the connecting shaft 175 rotates in the reverse direction. When rotating (for example, rotating counterclockwise when viewed from the base end side of the telescopic arm device 100), the rotational force of the connecting shaft 175 is transmitted. As a result, when the motor shaft 172 rotates in the forward direction (for example, rotates clockwise as viewed from the base end side of the telescopic arm device 100), the rotational force of the motor shaft 172 rotates through the connecting shaft 175 and the torque limiter 177. When the motor shaft 172 rotates in the reverse direction (for example, rotates counterclockwise when viewed from the base end side of the telescopic arm device 100), the rotational force of the motor shaft 172 is transmitted to the connecting shaft 175 and the one-way clutch 176. (Or to the rotating member 173 via the torque limiter 177).

  The rotating member 173 is formed in a disk shape using a metal material or a resin material, and an O-ring 173 a is attached to the outer peripheral portion of the rotating member 173. The O-ring 173a is formed in a ring shape using a rubber material, and comes into contact with the V groove 121 of the cylindrical portion 120. As a result, the rotational force of the rotating member 173 can be transmitted to the tubular portion 120 using the frictional force between the O-ring 173a and the V-groove 121, and the tubular portion 120 is rotated as the rotating member 173 rotates. Can be made. A rotating disk 178 having a slit is provided at the tip of the rotating member 173 so that the rotation detection sensor 179 detects the rotation of the rotating member 173 via the rotating disk 178.

  The casing 174 is formed in a rectangular box shape having an upper opening using a metal plate material, and the components (such as the DC motor 171) of the rotation driving unit 170 are accommodated inside the casing 174, and the casing. The proximal arm 110 is attached so as to cover the opening of the body part 174. Moreover, the housing | casing part 174 is attached to the up-and-down moving apparatus 63 of the moving apparatus 6 using the attachment stay which is not shown in figure. Note that a sensor plate 180 is attached to the lower end of the front end of the housing portion 174 so as to be swingable in the front-rear direction, and when the sensor contact portion 55 of the locking device 51 contacts the sensor plate 180, the sensor plate 180. Swings inward (backward) of the housing 174 and is detected by a reduction detection sensor (not shown).

  As shown in FIG. 1, the moving device 6 includes a guide rail 61 that extends vertically, a left-right moving device 62 that moves the guide rail 61 left and right, and a vertical moving device 63 that moves the drawing means 5 up and down. Configured. The guide rail 61 is arranged to extend in the vertical direction at the inner front portion of the prize room 3 and is configured to be movable in the horizontal direction in the prize room 3. The left and right moving device 62 is disposed in the lower front side of the prize room 3, and although not shown in detail, an annular wire (not shown) that extends to the left and right, a part of the wire, and a guide It is mainly composed of a connecting member (not shown) for connecting the rail 61 and a motor (not shown) for rotationally driving the wire, and the guide rail 61 and the drawing means 5 are accompanied by the rotation of the wire driven by the motor. Moves to the left and right.

  The vertical movement device 63 is disposed inside the guide rail 61, and although not shown in detail, an annular wire (not shown) that extends vertically and is wound around, a part of the wire, and the drawing means 5. A connecting member (not shown) for connecting the housing portion 174 and a motor (not shown) for rotationally driving the wire are mainly configured. With the rotation of the wire driven by the motor, the drawing means 5 is provided. It moves up and down along the guide rail 61. Then, by operating the left / right moving device 62 and the up / down moving device 63 configured in the moving device 6 in combination, the drawer means 5 can be moved in the up / down and left / right directions inside the front part of the prize room 3.

  In the prize acquisition game machine 1 configured as described above, when the player inserts a predetermined amount of coins into the coin insertion slot 9, the game is started. Therefore, a case where a game is played using the left drawing means 5 shown in FIG. 1 will be described. First, the pulling means 5 is moved upward from a predetermined standby position (not shown) set at the lower left in the prize room 3 by the moving device 6, and when the pulling means 5 reaches a desired position in the vertical direction, the pulling means 5 moves up and down. The operation switch 8a is operated. Then, after the pulling means 5 stops once, it moves to the right from the stop position, and when the pulling means 5 reaches a desired position in the left-right direction, the left / right operation switch 8b is operated. At this time, the pull-out means 5 stops at a desired position in the left-right direction (and up-down direction), and as shown in FIG. 9A, the telescopic arm device 100 configured in the pull-out means 5 extends rearward.

  When the telescopic arm device 100 is extended to a predetermined length, the telescopic arm device 100 is reduced to the original length (that is, forward). At this time, when the extending and retracting arm device 100 is extended to a predetermined length and the locking portion 52 provided at the tip of the extending and retracting arm device 100 has been successfully locked to the target member 83, the extending and retracting arm device 100 Is reduced to the original length (i.e., forward), so that the target member 83, the string-like member 82, and the locking member 52 are engaged with the target member 83 as shown in FIG. The prize placing section 4 (tray 41) is pulled forward together with the rod section 81.

  Further, when the prize placing section 4 can be pulled out to the predetermined pulling position, the second guide roller of the first tray base 42 receives the biasing force of the tilt biasing spring 73 configured in the tilting means 72. 44 passes through the roller passage portion 37 of the tray accommodating portion 32, and the first guide roller 43 of the first tray base 42 passes through the gap portion between the guide portion 36 and the shelf portion 31 of the tray accommodating portion 32. 9 (c), the prize placing section 4 (the tray 41 and the first tray base 42) is tilted forward by swinging relative to the swinging member 72a of the tilting means 72, so that the prize is placed. The prize GF placed on the placement unit 4 falls forward. Then, the prize GF falls to a prize drop opening (not shown) and comes out from the prize takeout port 7, and the player can acquire the prize GF.

  This makes it possible to adjust the prize payout rate in the prize acquisition game machine 1 with a simple and natural structure that makes it difficult or difficult to pull out the prize placing unit 4 by the drawer means 5. It can be done easily. Further, since the prize placing unit 4 is pulled out using the drawer means 5, the prize GF can be used without being bound by the form. Further, the locking portion 52 is locked to the target member 83 by adjusting the length of the string-like member 82 or changing the shape of the locking portion 52 or the elastic modulus of the locking portion biasing spring 57. The difficulty level at the time can be adjusted, and the prize payout rate in the prize acquisition game machine 1 can be adjusted more easily.

  When the telescopic arm device 100 is reduced to the original length, the locking portion 52 is sufficiently separated from the target member 83 and the locked state with respect to the target member 83 is surely released, and the pulling means 5 is moved by the moving device 6 to the prize room. The game moves to a predetermined standby position (not shown) in FIG. In addition, when the target member 83 is disengaged from the locking portion 52 (the locked state is released) before the prize placing portion 4 reaches the predetermined drawing position, the prize placing portion 4 is engaged with the target member 83. Similarly, when the telescopic arm device 100 is reduced to the original length, the pulling means 5 is moved to a predetermined standby position (not shown) in the prize chamber 3 by the moving device 6 when the telescopic arm device 100 is reduced to the original length. The game ends. Furthermore, when the locking part 52 does not lock properly on the target member 83, the prize placing part 4 does not move as it is, and the game ends in the same manner.

  In the case of playing a game using the right drawing means 5 shown in FIG. At this time, the (predetermined) standby position of the drawer means 5 is preferably set at the lower right in the prize room 3.

  Here, the expansion / contraction operation of the expansion / contraction arm device 100 will be described. When the motor shaft 172 of the DC motor 171 rotates in the forward direction (for example, rotates clockwise when viewed from the base end side of the telescopic arm device 100), the rotational force of the motor shaft 172 rotates through the connecting shaft 175 and the torque limiter 177. The rotation member 173 is rotated clockwise by the rotation driving of the DC motor 171. When the rotating member 173 rotates in the clockwise direction, the rotational force of the rotating member 173 is transmitted to the cylindrical portion 120 via the O-ring 173a, and the cylindrical portion 120 rotates counterclockwise.

  When the cylindrical portion 120 rotates counterclockwise, the first intermediate arm 130 has a first screw groove 131 (right screw) that is screwed with the first protrusion 126 of the first screw-like member 125. While relatively rotating with the cylindrical portion 120 (by frictional force), the cylindrical portion 120 moves relative to the distal end side of the telescopic arm device 100 (ie, behind the prize acquisition game machine 1). When the first intermediate arm 130 moves relative to the distal end side and a stopper (not shown) provided at the proximal end of the first intermediate arm 130 contacts the first screw-like member 125, 1 The intermediate arm 130 rotates counterclockwise together with the cylindrical portion 120.

  When the first intermediate arm 130 rotates counterclockwise, the second intermediate arm 140 has the second screw groove 141 (right screw) screwed into the second protrusion 136 of the second screw-like member 135, While rotating slightly with the first intermediate arm 130 (by frictional force), the first intermediate arm 130 moves relative to the distal end side of the telescopic arm device 100 (ie, behind the prize acquisition game machine 1). When the second intermediate arm 140 moves relative to the distal end side and a stopper (not shown) provided at the proximal end of the second intermediate arm 140 contacts the second screw-shaped member 135, The second intermediate arm 140 rotates counterclockwise together with the first intermediate arm 130.

  When the second intermediate arm 140 rotates counterclockwise, the distal arm 150 has a second threaded groove 151 (right thread) that is screwed with the second protrusion 146 of the third screw-like member 145. The intermediate arm 140 moves relative to the distal end side of the telescopic arm device 100 (that is, rearward of the prize acquisition game machine 1). Since the distal arm 150 is restricted from relative rotation with respect to the proximal arm 110 by the internal arm 160, when the second intermediate arm 140 rotates counterclockwise, the distal arm 150 is restricted from relative rotation with respect to the proximal arm 110. In this state, the telescopic arm device 100 moves relative to the distal end side.

  As described above, the first intermediate arm 130 moves relative to the cylindrical portion 120 to the predetermined (first) extension position, and the second intermediate arm 140 extends with respect to the first intermediate arm 130 by the predetermined (second) extension. When the distal arm 150 moves relative to the position and further moves relative to the second intermediate arm 140 to a predetermined (third) extended position, the telescopic arm device 100 is extended as shown in FIG.

  In this state, when the motor shaft 172 of the DC motor 171 reverses (for example, rotates counterclockwise when viewed from the base end side of the telescopic arm device 100), the rotational force of the motor shaft 172 causes the connecting shaft 175 and the one-way clutch 176 to move. Is transmitted to the rotating member 173, and the rotating member 173 is rotated counterclockwise by the rotational drive of the DC motor 171. When the rotating member 173 rotates in the counterclockwise direction, the rotational force of the rotating member 173 is transmitted to the cylindrical portion 120 via the O-ring 173a, and the cylindrical portion 120 rotates clockwise.

  When the cylindrical portion 120 rotates clockwise, the first intermediate arm 130 and the second intermediate arm 140 positioned at the predetermined (first and second) extended positions rotate together with the cylindrical portion 120 (by frictional force) clockwise. Rotate. At this time, since the distal arm 150 is restricted from rotating relative to the proximal arm 110 by the internal arm 160, when the second intermediate arm 140 rotates relative to the clockwise direction, the distal arm 150 expands and contracts relative to the second intermediate arm 140. The arm device 100 moves relative to the base end side (that is, in front of the prize acquisition game machine 1).

  When the distal arm 150 moves relative to the original position (position at the time of reduction) and a stopper (not shown) provided at the distal end of the distal arm 150 contacts the second intermediate arm 140 (by frictional force) ) The relative rotation of the second intermediate arm 140 with respect to the distal arm 150 (proximal arm 110) is restricted. At this time, when the first intermediate arm 130 rotates relative to the clockwise direction, the second intermediate arm 140 is relative to the proximal end side of the telescopic arm device 100 (that is, in front of the prize acquisition game machine 1) with respect to the first intermediate arm 130. Moving.

  When the second intermediate arm 140 moves relative to the original position (position at the time of reduction) and a stopper (not shown) provided at the tip of the second intermediate arm 140 contacts the first intermediate arm 130, The relative rotation of the first intermediate arm 130 with respect to the second intermediate arm 140 (proximal arm 110) is restricted (by frictional force). At this time, when the cylindrical portion 120 rotates relative to the clockwise direction, the first intermediate arm 130 moves relative to the first intermediate arm 130 toward the base end side of the telescopic arm device 100 (that is, the front of the prize acquisition game machine 1). To do.

  As described above, when the first intermediate arm 130, the second intermediate arm 140, and the tip arm 150 are relatively moved to their original positions (positions at the time of reduction), as shown in FIG. It becomes a state reduced to the length of.

  When the telescopic arm device 100 is extended to a predetermined length, the torque limiter 177 causes slippage in the rotation of the motor shaft 172 and the connecting shaft 175, and the rotation drive signal output to the DC motor 171 and the rotation detection sensor 179. And the rotation detection signal detected in the above, the operation of the DC motor 171, that is, the extension operation of the telescopic arm device 100 is stopped. On the other hand, when the telescopic arm device 100 is reduced to the original length, the sensor contact portion 55 of the locking device 51 contacts the sensor plate 180 and the sensor plate 180 swings inward (rearward) of the housing portion 174. This is detected by a reduction detection sensor (not shown), and the operation of the DC motor 171, that is, the reduction operation of the telescopic arm device 100 is stopped.

  As described above, according to the telescopic arm device 100 according to the present invention, the distal end arm 150 can be moved in the direction of the rotation axis of the cylindrical portion 120 by rotating the cylindrical portion 120, so that it is simpler. With the structure, the telescopic arm device 100 can be expanded and contracted, and the telescopic arm device 100 can be reduced in size and weight.

  Further, by providing the intermediate arms (the first intermediate arm 130 and the second intermediate arm 140) between the cylindrical portion 120 and the tip arm 150, the expansion / contraction operation range of the expansion / contraction arm device 100 can be further increased. .

  Furthermore, by providing a plurality of intermediate arms in a nested manner (like the first intermediate arm 130 and the second intermediate arm 140), the expansion / contraction operation range of the expansion / contraction arm device 100 can be further increased.

  In addition, since the prize acquisition game machine 1 is configured to include the telescopic arm device 100 as described above, the extension arm apparatus 100 is reduced in size and weight, so that the structure of the prize acquisition game machine 1 is further simplified. It can be expected that the manufacturing cost of the prize acquisition game machine 1 can be reduced.

  In the above-described embodiment, the first and second intermediate arms 130 and 140 are provided between the cylindrical portion 120 and the tip arm 150. However, the present invention is not limited to this, and there is one intermediate arm. May be provided, or three or more may be provided. Further, the tip arm may be fitted inside the cylindrical portion without providing the intermediate arm.

  Moreover, in the above-mentioned embodiment, although the cylindrical part 120 is rotated using the rotating member 173, it is not restricted to this, You may make it rotate the cylindrical part 120 using a gear, You may make it rotate the cylindrical part 120 using a belt and a pulley.

  Furthermore, in the above-described embodiment, the DC motor 171 is used as the rotational drive source. However, the present invention is not limited to this, and a pulse motor or a solenoid may be used.

  In the above-described embodiment, the one-way clutch 176 is provided in the rotation driving unit 170, but the present invention is not limited to this, and the one-way clutch 176 may not be provided.

  Furthermore, in the above-described embodiment, the telescopic arm device 100 according to the present invention is used in the prize acquisition game machine 1 that draws and drops the prize placed on the prize placing section 4 to a predetermined drawer position. The present invention is not limited to this, and the present invention can also be applied to a prize acquisition game machine in which a prize placed on a prize placement unit is pushed down to a predetermined drop position and dropped. Furthermore, the telescopic arm device 100 according to the present invention can be applied not only to a prize acquisition game machine but also to an industrial robot, a crane device, and the like.

It is a perspective view of the prize acquisition game machine provided with the expansion-contraction arm apparatus based on this invention. It is a front view of a prize placement part. It is a right view (partial sectional view) of a prize placing part. It is a right side enlarged view (partial sectional view) of the tilting means. It is an enlarged view of a steel ball. It is a right view (partial sectional view) of the telescopic arm device in the extended state. It is a right view of the telescopic arm device in the contracted state. It is a front view of a latching | locking part. It is explanatory drawing (right sectional drawing) showing the process in which a prize mounting part is pulled out in time series in order of (a)-(c).

Explanation of symbols

GF prize 1 prize acquisition game machine 4 prize placement part 5 drawer means (prize movement device)
8a Up / down operation switch (operating device)
8b Left / right operation switch (operation device)
100 telescopic arm device 110 base end arm 120 cylindrical portion 125 first screw member 126 first protrusion 130 first intermediate arm 131 first screw groove 135 second screw member 136 second protrusion 140 second intermediate arm 141 Second screw groove 145 Third screw-like member 146 Third protrusion 150 Tip arm 151 Third screw groove 160 Internal arm 170 Rotation drive part

Claims (4)

A proximal arm;
A cylindrical portion rotatably fitted inside the proximal arm;
A rotation drive unit for rotating the cylindrical part;
A cylindrical tip arm fitted inside the cylindrical portion so as to be movable in the direction of the rotation axis of the cylindrical portion;
A telescopic internal arm, which is present in the proximal arm and the cylindrical portion, and is connected to the proximal arm and the distal arm so that relative rotation of the distal arm with respect to the proximal arm is restricted; Prepared,
A screw groove is provided on the outer peripheral portion of the tip arm, and a protrusion that can be screwed into the screw groove is provided on the inner peripheral portion of the cylindrical portion, and the tip arm is moved along with the rotation of the cylindrical portion. A telescopic arm device configured to be movable in the direction of the rotation axis in a state where relative rotation with respect to the proximal arm is restricted. A tubular shape fitted between the tubular portion and the tip arm so as to be movable in the direction of the rotation axis with the tubular portion and the tip arm and to be rotatable around the rotation axis of the tubular portion. Intermediate arm is provided,
A screw groove is provided on the outer peripheral portion of the intermediate arm to be screwed with the protruding portion of the cylindrical portion, and a protrusion portion that is screwable with the screw groove of the tip arm is provided on the inner peripheral portion of the intermediate arm. The telescopic arm device according to claim 1, wherein the telescopic arm device is provided.   The telescopic arm device according to claim 2, wherein the intermediate arm is provided in a plurality of stages in a nested manner. A prize placement section on which prizes are placed;
A prize moving device for moving a prize placed on the prize placing section to a predetermined drop position;
An operation device for performing an operation for operating the prize moving device;
When the prize moving device is operated by operating the operating device and the prize moving device can be moved to the predetermined drop position using the prize moving device, the prize placed on the prize placing portion is In the prize acquisition game machine configured to be able to acquire a prize by falling from a predetermined drop position,
The prize moving device is configured to have an extendable arm device capable of pushing out or drawing out the prize placed on the prize placing section to the predetermined drop position,
A prize acquisition game machine, wherein the telescopic arm device is the telescopic arm device according to any one of claims 1 to 3.

Images