CN202485553U - Toy gun with fluid firing switch and fluid switch thereof - Google Patents

Abstract

The utility model relates to a toy gun with a fluid launch switch and a fluid switch thereof, which includes a main body with a fluid inlet and a fluid outlet. A seal is provided on the inside of the main body. The shaft passes through the seal and is sealed against the seal. The shaft has a recess. When the fluid switch is activated, the shaft moves longitudinally so that the recess forms a fluid flow path through the seal, allowing fluid to flow from the inlet to the outlet.

Description

Toy gun with fluid launch switch and fluid switch thereof

technical field

The utility model relates to a toy gun. In particular, the present invention relates, although not exclusively, to a toy gun that utilizes a compressed gas, such as air, as a propellant for firing liquids such as water or projectiles such as darts. the

Background technique

Some known toy guns include a reservoir for storing a pressurized fluid propellant. When the trigger is fired, the release of the propellant causes fluid to escape to cause, for example, a projectile or water to be launched from the gun. The problem with this type of toy gun is that, to overcome the stored fluid pressure, a high trigger force is required, which is difficult to obtain manually or electrically. the

Utility model content

The purpose of the utility model is to provide a fluid switch for a toy gun and a toy gun using the fluid switch. the

A fluid switch for a toy gun is disclosed herein, comprising:

a body having a fluid inlet and a fluid outlet;

a seal inside said body;

a shaft extending through the seal and sealing against the seal, the shaft having a recess; and

A trigger member moves the shaft longitudinally so that the recess forms a fluid flow path through the seal, allowing fluid to flow from the inlet to the outlet. the

Preferably, the fluid switch further includes a second seal, the shaft also passes through the second seal, and is sealed against the second seal. the

Preferably, the sealing element is an O-ring. the

Preferably, said inlet is transverse to said axis and said outlet is parallel to said axis. the

Preferably, said inlet is parallel to said axis and said outlet is transverse to said axis. the

Preferably, the recess is in the form of an annular groove around the shaft. the

Also disclosed herein is a toy gun, including:

The fluid switch disclosed above;

a fluid reservoir in communication with the inlet;

a nozzle in communication with said outlet; and

A trigger acting on or comprising at least part of said trigger member. the

Preferably, the blaster further comprises a priming pump to pressurize the fluid in the reservoir. the

Preferably, the blaster further comprises a vent through which fluid can escape to the atmosphere. the

Preferably, said toy gun further comprises a nozzle valve for opening said nozzle, said nozzle valve being activated by said trigger. the

Preferably, the toy gun further comprises an auxiliary charge store of variable volume for storing pressurized fluid until the nozzle valve is opened, then the volume elastically contracts to expel the fluid through the nozzle. the

Preferably, said auxiliary load accumulator comprises a bladder. the

Preferably, the auxiliary load store comprises a spring loaded piston. the

A kind of multi-shot toy gun is further disclosed herein, including:

The fluid switch disclosed above;

a fluid reservoir in communication with the inlet; and

a nozzle in communication with the outlet. the

Preferably, said multi shot toy further comprises an electric motor or barrel acting on or comprising at least part of said trigger member to reciprocate said shaft so that said recess repeatedly passes said seal. the

An advantage of the present invention is that the user only needs to exert less force on the trigger to release the stored high firing pressure. the

Description of drawings

The preferred mode of the present utility model will now be described by way of examples with reference to the accompanying drawings, wherein:

Figure 1 is a schematic cross-sectional front view of components of the toy gun in a configuration prior to loading;

Figure 2 is a similar schematic cross-sectional front view of the same components at the beginning of filling;

FIG. 3 is a similar schematic cross-sectional front view of the same components in a configuration to initiate launch;

Figure 4 is a similar schematic cross-sectional front view of the same components in a configuration for complete launch;

Figure 5 is a similar schematic cross-sectional front view of the same components in a post-launch configuration;

Figure 6 is a similar schematic cross-sectional front view of the same components in a fired trigger-released configuration;

Figure 7 is a similar schematic cross-sectional front view of the same components in preparation for refilling with partial water consumption;

Figure 8 is a schematic cross-sectional front view of a first optional toy gun in a configuration prior to loading;

Figure 9 is a schematic cross-sectional front view of a first optional blaster in a partially loaded configuration;

Figure 10 is a schematic cross-sectional front view of a first optional toy gun in a fully loaded configuration;

Figure 11 is a schematic cross-sectional front view of the first optional toy gun at the start of firing;

Figure 12 is a schematic cross-sectional front view of a second alternative blaster similar to the first alternative blaster but with a motorized firing action that brings a pulse of water with a single trigger action launch;

Figure 13 is a schematic cross-sectional front view of a third optional toy gun in a configuration prior to loading;

Figure 14 is a schematic cross-sectional front view of a third optional toy gun in a partially loaded configuration;

Figure 15 is a schematic cross-sectional front view of a third optional toy gun in a fully loaded configuration;

Figure 16 is a schematic cross-sectional front view of a third optional toy gun at the start of firing;

Figure 17 is a schematic cross-sectional front view of a fluid switch for a pneumatic dart injector in a primed configuration;

Figure 18 is a schematic cross-sectional front view of the fluid switch of Figure 17 in a pre-launch configuration;

Figure 19 is a schematic cross-sectional front view of the fluid switch of Figure 17 in a post-launch configuration;

Figure 20 is a schematic cross-sectional front view of a dart injector incorporating the fluid switch of Figures 17-19; and

21 is a schematic cross-sectional elevation view of another dart shooter incorporating the fluid switch of FIGS. 17-19. the

Detailed ways

The internal assembly 10 of the toy gun is schematically depicted in Figures 1 to 7 of the accompanying drawings. the

The reservoir 11 is sealed with a cover, and water can be replenished through the cover. Riser 18 extends upwardly into reservoir 11 . The riser 18 extends almost to the top of the vessel 11 so that its outlet is above the water level. The riser 18 is connected to the joint 17 . A priming conduit 16 extends from the adapter 17 to the priming device 13 . The filler 13 includes a reciprocating handle 14 connected to a priming piston 15 incorporating a one-way valve 43. the

A fluid switch 20 actuated by a trigger 19 is also attached to the fitting 17 . the

Positioned below the reservoir 11 is a twin cylinder 12 comprising a hydraulic cylinder 25 of small diameter and a pneumatic cylinder 23 of large diameter. Hydraulic piston 24 slides within hydraulic cylinder 25 and is sealed against inner cylinder wall 25 by an O-ring. Similarly, the pneumatic piston 22 slides within the pneumatic cylinder 23 and has an O-ring to seal against the inner cylinder wall of the pneumatic cylinder 23 . Pistons 22 and 24 are fixed to each other by a rigid link 26 . The hydraulic piston 24 has a smaller surface area than the pneumatic piston 22 . the

A launch conduit 21 extends between the fluid switch 20 and the pneumatic cylinder 23 . the

In front of the hydraulic cylinder 25 there is a hydraulic firing chamber 30 . A nozzle 31 extends from the hydraulic firing chamber 30 into the open space. the

Immediately behind the nozzle 31 is a nozzle valve 32 from which the firing rod 28 extends. Firing rod 28 seals through a bore of hydraulic firing chamber 30 and is biased to the closed configuration by nozzle valve return spring 33 . the

The firing rod 28 has a stop 40 at its exposed rear end. the

The fluid switch 20 includes a manifold housing having a manifold rod 34 extending longitudinally therethrough. The trigger 19 is attached to a multi-way lever 34 . A trigger return spring 35 biases the trigger to the configuration depicted in FIG. 1 . the

Attached to the trigger 19 is a pull rod 41 having a detent 27 at its distal end through which the firing rod 28 passes. the

The multi-way rod 34 is sealed in the multi-way tube by a pair of O-rings 37 and 38 . These O-rings are fixed relative to the housing of the multi-way tube, and the multi-way rod 34 slides relative to the O-rings. The multi-way rod 34 has a peripheral or annular recess 39 . the

The gap between the multi-way rod 34 and the housing of the fluid switch (multi-way tube) forms a pneumatic discharge port 36 . the

In the drawings, the letter "W" represents water or other hydraulic fluid, and the letter "A" represents a pneumatic gas such as air. For convenience, the words "water" and "air" are used. the

In use, water is filled into the reservoir 11 and the lid seals the reservoir 11. The handle 14 of the priming pump 13 is reciprocated to build up air pressure in the air above the priming conduit 16 , fitting 17 , riser 18 and water in the reservoir 11 . the

The hydraulic pressure in the water of the reservoir rises accordingly. Since the inlet valve 29 is a one-way valve, water flows from the reservoir 11 into the hydraulic firing chamber 30 and into the hydraulic cylinder 25 ahead of the hydraulic piston 24 . The air gathered between the piston 22 and the conduit 21 is discharged into the atmosphere through the discharge port 36 through the gap between the O-ring 37 and the annular recess 39 on the multi-way rod 34. Nozzle valve 32 is closed and continued reciprocation of handle 14 builds up hydraulic and pneumatic pressure in the system. the

When the trigger 19 is activated, the trigger 19 moves past the position of FIG. 2 to the position shown in FIG. 3 . The detent 27 of the pull rod 28 is pulled against the stop 40 . Accordingly, the firing rod 28 opens the nozzle valve 32 against the return spring 33 . At the same time, the annular recess 39 forms a flow channel around the O-ring 38 so that the compressed air at the joint 17 quickly enters the pneumatic cylinder 23 through the launching conduit 21 . the

If the air pressure behind piston 22 is say 50 psi, the ratio of the diameters of pistons 22 and 24 will produce a correspondingly increased hydraulic pressure in the water in hydraulic cylinder 25 . Such a pressure may be around 90 psi. The connecting rods exert equal and opposite forces between the pistons. Because the movement is dynamic in nature, there must be some inefficiency due to slight frictional losses and leakage losses. The net force on link 26 is to the left. Accordingly, pistons 22 and 24 move to the left in unison to cause a rapid spray of water through nozzle 31 . the

When the trigger 19 is released as shown in Figure 5, the pistons 22 and 24 stall to the left and the nozzle valve 32 closes again. The air pressure in the reservoir 11 will push the water again into the hydraulic firing chamber 30 via the inlet valve 29 as shown in FIG. 6 . In this configuration, the multi-way rod 34 has been moved to the left so that the annular recess 39 forms a flow channel around the O-ring 37 so that the air behind the pneumatic piston 22 escapes to the atmosphere via the outlet 36 substantially at atmospheric pressure . the

The system then reverts to the configuration depicted in FIG. 7 , whereupon the amount of water remaining in the reservoir 11 is reduced by the amount escaping via the nozzle 31 . When the solid portion of the multi-way rod 34 seals against the O-ring 38, the system can continue to fill. the

Figures 8 to 21 of the accompanying drawings depict alternative toy gun embodiments that do not incorporate a pressure amplification system, but utilize the fluid switch in a different manner. the

The embodiment 100 described in Figures 8 to 11 comprises a reservoir 11 which is pressure-tight by means of a lid through which water can be added. A priming pump 13 with a trigger handle 14 pressurizes the reservoir 11 via a riser 16 . A one-way valve 43 at the priming pump prevents backflow of air from the riser 16 to the pump. the

A delivery conduit 52 built into the reservoir 11 fills with water from the bottom and delivers the water to the fluid switch 20 . Fluid switch 20 is similar to that previously described, but is not required to have a vent. The body of the fluid switch houses a pair of O-ring seals 37 and 38 through which the multi-way rod 34 passes and seals. An annular recess 39 is provided and functions largely as described above. the

Pressure is built up within the receptacle 11 by the reciprocating pull of the handle 14 . Due to the position of the multi-way lever 34 , water can enter the hydraulic firing chamber 30 on which the nozzle 31 is arranged via the annular recess 39 . The nozzle valve 32 is directly connected to the multi-way lever 34, and the actuation of the trigger 19 and associated assembly 41, 27, 28, etc. pulls the nozzle valve 32 back to open the nozzle. A resilient load reservoir in the form of a flexible bladder 50 (typically rubber or synthetic elastomeric material) extends from and attaches to the hydraulic firing chamber 30 (via hose clamps or the like). This accepts an additional volume of water under pressure and expands as the priming pump primes. the

When the trigger 19 is pulled back as shown in FIG. 11 , the nozzle valve 32 opens and the annular recess 39 moves back so that the O-ring 37 seals against the multi-way shaft 34 to prevent water from passing from the firing chamber 30 to the reservoir 11 backflow. Subsequently, the bladder 50 will deflate rapidly to spray water through the nozzle 31 . In this embodiment, air is used only for firing pressure. Only liquid actually passes through the fluid switch 20 . the

Figures 13-16 depict a similar embodiment 200 that utilizes a spring loaded piston 60 instead of a bladder. The coil spring 61 is behind the piston 60, and the firing rod 28 runs through the coil spring 61. Nozzle valve 32 is secured to the firing rod. Firing rod 28 passes directly through piston 60 in a sealed manner. the

In this embodiment, connecting rod 62 extends between multi-way rod 34 and firing rod 28 . A connecting rod 62 is attached to the trigger 19 for movement therewith. Nut 40 on multi-way rod 34 acts on spring 35 compressed against connecting rod 62 . When the trigger 19 is fired, the trigger 19 pulls the connecting rod 62 back to act on the firing rod 28 as the spring 35 compresses. Due to the force of the spring 35 on the nut 40 , the multiway lever 34 is retracted backwards so that the annular recess 39 is pulled behind the O-ring 37 to prevent backflow of water from the firing chamber 30 to the reservoir 11 . Water is thus sprayed through nozzles 31 . Due to the opening of the nozzle valve 32, the spring 61 rapidly pushes the piston 60 forward causing a strong spray of water through the nozzle. As in the previous embodiment, air is used only for firing pressure. The air does not actually pass through the fluid switch 20 . the

The last embodiment is depicted in FIGS. 17 to 21 . These are purely pneumatic (does not utilize liquids) applications. A modified version of the fluid switch 300 is first described in FIGS. 17-19, which form part of the multiple dart injectors 400 and 500 shown in FIGS. 20 and 21, respectively. Here, the discharge opening 36 actually surrounds the multi-way rod 34 and is selectively covered by a spring stop insert 63 which is fixed with respect to the multi-way rod 34 . The right distal end of the multiway lever 34 has an attachment handle 64 that is manipulated by the firing mechanism. the

The return spring 35 is compressed between the body of the pressure switch 300 and the spring stopper 63 to bias the multi-way lever 34 to the right. The multiway inlet 42 is on the left and the outlet is via the launch conduit 21 extending down to the launch chamber 72 . The multi-way rod 34 has an annular recess 39 cooperating with the O-rings 37 and 38 in the manner described above. In the configuration depicted in FIG. 17 , air can flow from the multiway inlet 42 through the launch conduit 21 to the launch chamber 72 because there is a passage formed through the o-ring 37 through the recess 39. the

In the configuration depicted in FIG. 18 , the exhaust port 36 is closed and the air in the launch conduit 21 cannot escape through the O-ring 38 . Only when the multi-way lever 34 is moved to the position depicted in FIG. 19 can the air in the launch duct 21 escape to the atmosphere via the exhaust port 36 . the

The fluid switch above is utilized in the embodiment of FIG. 20 . In this embodiment, a single activation of the trigger 19 will result in a single dart being fired from the rotatable barrel 81 . The firing chamber 70 has an opening 71 communicating with a dart chamber 81 in which soft projectiles for firing are loaded. Pull rod 41 extends from trigger 19 to attachment handle 64 to operate the fluid switch as described. the

The embodiment of FIG. 21 is designed to fire a burst of darts from the rotatable barrel 81 with a single trigger of the trigger 19 . To this end, the electric motor 54 has a worm gear 55 driving a crank 56 from which a connecting rod 59 extends. Link 59 is attached to pivot bar 82 . The other end of the pivot rod 82 is connected to the tie rod 41 . By activation of the trigger 19, power from the battery 57 is switched on to the motor 54 to initiate reciprocating movement of the multi-way stem 34 of the fluid valve. This motor can be replaced by a mechanical wind-up gearbox to achieve the same function. the

The embodiments of FIGS. 20 and 21 each include a container 11 having an internal priming pump 13 integral with a handle intended to protrude from the container 11 . Air is delivered from the reservoir 11 to the fluid switch via delivery conduit 52 or other means. the

Each embodiment also utilizes a barrel-advancing mechanism comprising parts 82 and 83 that interact to rotate barrel 81 to enable continuous firing of darts. the

It should be noted that in each of the described embodiments, due to the small diameter of the multi-way lever 34 only very little force is required to activate the multi-way lever 34 . This small surface area translates into a low grammage trigger force despite the relatively high pressure of the stored air load. the

It should also be understood that obvious improvements and substitutions for those skilled in the art are deemed not to exceed the scope of the present invention. the

Claims (15)

1. A fluid switch for a toy gun, characterized in that the fluid switch comprises: a body having a fluid inlet and a fluid outlet; a seal inside the body; a shaft extending through the seal and sealing against the seal, the shaft having a recess; and A trigger member moves the shaft longitudinally so that the recess forms a fluid flow path through the seal, allowing fluid to flow from the inlet to the outlet. 2. The fluid switch of claim 1 , including a second seal, the shaft also passing through the second seal and sealing against the second seal. 3. The fluid switch according to claim 1, characterized in that the sealing member is an O-ring. 4. The fluid switch of claim 1 wherein said inlet is transverse to said axis and said outlet is parallel to said axis. 5. The fluid switch of claim 1, wherein said inlet is parallel to said axis and said outlet is transverse to said axis. 6. The fluid switch of claim 1, wherein the recess is in the form of an annular groove surrounding the shaft. 7. A toy gun, characterized in that it comprises: A fluid switch according to claim 1; a fluid reservoir in communication with the inlet; a nozzle in communication with the outlet; and A trigger acting on or comprising at least part of said trigger member. 8. The toy gun of claim 7, further comprising a priming pump to pressurize the fluid in the reservoir. 9. The toy gun of claim 7, further comprising a vent through which fluid can escape to the atmosphere. 10. The toy gun of claim 7, further comprising a nozzle valve for opening said nozzle, said nozzle valve being activated by said trigger. 11. The toy gun of claim 10, further comprising a variable volume auxiliary load reservoir for storing pressurized fluid until said nozzle valve is opened, whereupon the volume elastically contracts to be expelled through said nozzle fluid. 12. The toy gun of claim 11, wherein the auxiliary load reservoir includes a bladder. 13. The toy gun of claim 11, wherein the auxiliary load reservoir comprises a spring loaded piston. 14. A multi-shot toy gun, characterized in that it comprises: A fluid switch according to claim 1; a fluid reservoir in communication with the inlet; a nozzle in communication with the outlet. 15. The multiple shot toy gun of claim 14, further comprising an electric motor acting on or comprising at least part of said trigger member to reciprocate said shaft so that said recess repeatedly passes said seal.

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