JP4745021B2 - Nozzle drive mechanism in simulated gun bullet launcher - Google Patents

Description

  In the present invention, the movable part of the piston cylinder device is moved backward by rotation of the motor, and then the movable part is advanced by the elastic force of the urging means to generate compressed air, which is supplied by the tappet member interlocked with the reverse movement and forward movement. The present invention relates to a nozzle drive mechanism in a bullet firing device of a simulated gun that is opened and closed and loaded with bullets.

  Among the simulated guns using spherical bullets called BB bullets, for example, a simulated gun called an electric gun or the like operates with a motor as a power source and is excellent in continuous firing. This type of simulated gun combines a gear and a rack that are rotated by a motor to retract, for example, a piston of a piston cylinder device, compresses a spring that pressurizes the piston, and a piston released at the retreat limit is advanced by the spring. Thus, compressed air is generated, and a bullet can be fired with the pressure. In the present invention, the simulated gun is used as a term indicating a gun that is not regarded as a real gun, such as a toy gun, a survival game gun, and a sports gun.

Conventional so-called electric guns include JP-A-3-221793, JP-A-3-104688, JP-A-6-235597, JP-A-2005-121300, and the like. However, these prior arts have the following problems in terms of miniaturization. In other words, the conventional one is provided with a cam coaxially with the sector gear for retreating the piston, and the nozzle portion is moved by the action of the cam on the tappet plate and loaded with bullets. There is a problem that the radius of rotation of the inevitably becomes small, and a sufficient moving distance cannot be obtained. In addition, in order to move the tappet plate, it is necessary to provide a portion for receiving the cam. On the other hand, when each gear including the sector gear is reduced,
The portion that receives the cam is easily brought into contact. For these reasons, the design limit is lowered and it is difficult to reduce the size.

Japanese Patent Laid-Open No. 3-221793 JP-A-6-235597 JP 2005-121300 A Japanese Utility Model Publication 3-104688

  The present invention has been made paying attention to the above points, and the problem is that, unlike conventional tappet plates and cam engagement methods, the diameter of each gear can be reduced, and the overall size can be reduced. An object of the present invention is to provide a nozzle drive mechanism for a bullet firing device for a simulated gun. Another object of the present invention is to reduce the size of the bullet so that the bullet can be fired more stably and reliably.

In order to solve the above problems, the present invention retreats the movable part of the piston cylinder device by the rotation of the motor, and then advances the movable part by the elastic force of the urging means to generate compressed air. A gear set that decelerates the rotation of the motor of the sector gear that meshes with the rack provided in the movable part of the piston cylinder device in the bullet firing device of the simulated gun that opens and closes the bullet feed port by the tappet member linked with the provided gear coaxially, to the rear of the tappet members to contact the sector gear and the bullet feed port, provided with a mating teeth that mesh with teeth provided on the sector gear coaxially, the mating teeth from the two peaks and one valley The teeth provided coaxially with the sector gear enter the valley between the two peaks and mesh with each other, and the first teeth are followed by the phase of the tappet member. A second tooth that is in a state of being hooked on the peak of the tooth, and the second tooth has a second tooth for holding the tappet member in a retracted state while being hooked on the peak of the tappet member. The piston cylinder device is formed to be slightly longer in the rotation direction than the teeth, and the nozzle portion located at the front portion of the piston cylinder device is provided at the front portion of the tappet member, and the above-described piston cylinder device according to the retreating operation of the tappet member. The nozzle part located in the front part of this is moved backward and forward, and means for opening and closing the bullet inlet is taken.

  The simulated gun of the present invention decelerates the rotation of the motor to move the moving part of the piston cylinder device backward, and moves the moving part forward by the biasing means in the vicinity of the retracting limit to generate compressed air. It has a configuration in which the bullet opening is opened and closed by a tappet member to be loaded, and a bullet is loaded. As for the piston / cylinder device, the piston may reciprocate with respect to the cylinder or the cylinder may reciprocate with respect to the piston. There is a possibility that it corresponds to a movable part, and both of the present invention can be an operating part.

  To reduce the rotation of the motor, a reduction gear set consisting of gears that reduce the speed of multiple stages is used, so how small the gears can be closely arranged is also the overall small size It affects the conversion. On the other hand, in the case of the present invention, as a result of taking the configuration described later, the gears constituting the reduction gear set need only consider their meshing, and other than meshing, such as rotational torque for driving by a cam. There is no need to consider the problem. This contributes to the miniaturization of the entire mechanism and the stability of operation.

  In the present invention, the tappet member communicates the sector gear and the bullet hole. The sector gear meshes with the rack provided in the movable part of the piston cylinder device, and is provided coaxially with, for example, the final gear of a gear set that reduces the rotation of the motor. On the rear part of the tappet member, a mating tooth that meshes with the teeth provided coaxially with the sector gear is provided, and on the front part of the tappet member, a nozzle part located at the front part of the piston cylinder device is provided. Thereby, according to the retreating operation of the tappet member, the nozzle portion located at the front portion of the piston cylinder device is retreated and advanced to open and close the bullet opening.

  The tappet member has a mating tooth at the rear part that meshes with the tooth for engagement with a tooth provided coaxially with the sector gear. The teeth provided coaxially with the sector gear and the teeth at the rear of the tappet member can have any shape and configuration, such as increasing or decreasing the number according to the sector gear diameter. The teeth provided coaxially with the sector gear engage with the mating teeth of the tappet member and hold the nozzle portion in the retracted position. While the tappet member is hooked, the tappet member is in the retracted state. In order to hold it as it is, it is desired to extend a little longer in the rotational direction.

  The tappet member according to the present invention is retracted by meshing with teeth provided coaxially with the sector gear, and the tappet member is advanced when the sector gear is retracted so as to return to the original position direction after the retract. It is desirable to have a configuration for accumulating elastic means. As a result, even if the tappet member is not moved mechanically, it automatically returns to the original position by the elastic means.

  Further, the nozzle portion in the mechanism of the present invention is arranged to be slidable in the front-rear direction at the air injection port located at the front portion of the piston cylinder device, and is integrally formed with the front portion of the tappet member in the slidable state. It is assumed that it is movable. Therefore, according to the retreating operation of the tappet member, the nozzle portion is moved backward and forward, and the bullet opening is opened and closed. The nozzle part has a nozzle port for injecting compressed air at the front part of the piston cylinder device, and at the same time serves as a member for pushing out the bullet introduced from the bullet feed port when retreating in order to load it in the loading position. Fulfill.

  Since the present invention is configured and operates as described above, unlike the conventional tappet plate and cam engagement method, the diameter of each gear can be made sufficiently small. It is extremely compact and the entire mechanism can be reduced in size. In addition, almost the entire mechanism is operated by meshing of the gears. It can be fired. Further, since the tappet member is driven by meshing between the sector gear and the rear mating tooth, it is quieter than the cam engagement method, and the operation noise can be reduced.

  Hereinafter, a nozzle drive mechanism in a bullet firing device for a simulated gun according to the present invention will be described in more detail with reference to the illustrated embodiment. The figure shows an example of a bullet firing engine unit 10 of a simulated gun according to the present invention and a nozzle unit drive mechanism 20 incorporated therein.

  In each figure, 11 is an engine part housing attached to the gun body, 12 is a cylinder provided there, 13 is a piston that can slide back and forth inside the cylinder, and in the example, the cylinder 12 is the engine part. It corresponds to the fixed part fixed to the housing 11, and the piston 13 corresponds to the movable part. An air injection port 14 is opened at the front end portion of the cylinder 12, and a compression spring is set as a biasing means 15 between the rear portion of the piston 13 and the gun body 11. Reference numeral 16 denotes a spring mounting portion, 17 denotes a seal ring of the piston front end, and 18 denotes a piston receiver for receiving the piston front end. The cylinder 12 or the piston receiver 18 constitutes the bullet firing engine unit 10 of the simulated gun.

A motor is provided below the cylinder 12 as a drive source 21 of the nozzle drive mechanism 20. The motor as the drive source 21 can be provided on the lower surface of the cylinder 12 so that the cross-sectional shape of the entire nozzle unit drive mechanism can be accommodated in the size of about two cylinders. A small bevel gear 22 is provided on the output shaft of the motor. A large bevel gear 23 meshed with the small bevel gear 22 and a first small gear 24 coaxially provided, a second large gear 25 meshed with the small bevel gear 23 and a second small gear 26 coaxially provided, A reduction gear set 30 is provided, which includes a third large gear 27 that meshes with the third large gear 27, a third small gear 28 that is provided coaxially, and a fourth large gear 29 that meshes with the third small gear 28.

  The reduction gear set 30 transmits the driving force of the motor to the sector gear 31, and the fourth large gear 29, which is the final gear, is provided on the back surface in each figure of the sector gear 31, and It rotates in the same direction as the sector gear 31. The sector gear 31 (on the front side) is provided with a toothed portion 33 that meshes with the rack 32 and a toothless portion 34 that does not have teeth, provided in the sliding direction of the piston 13. The toothed portion 33 is composed of the number of tooth rows necessary to retract the piston 13, and the toothless portion 34 releases the rack 32 from meshing with the toothed portion 33 at the retreat limit of the piston 13. It is a non-meshing portion that enables the piston 13 to return quickly by the biasing means 15.

A tappet member 35 is provided to connect the sector gear 31 and the bullet inlet 42 . The tappet member 35 has, at the rear part thereof, teeth composed of two ridges and one valley as mating teeth 36 that mesh with teeth 37 and 38 provided coaxially with the sector gear 31. This part is shown in detail in FIG. 6, where the tooth 37 is the first tooth described above that enters the valley between the two peaks and engages, and the tooth 38 is after the first tooth. Then, it is the 2nd tooth | gear which will be in the state caught on the peak 39 of the other tooth | gear 36 of the tappet member 35. FIG. The second tooth 38 is formed to be slightly longer in the rotational direction as much as the first tooth two teeth in order to hold the tappet member 35 in the retracted state while being caught by the peak 39 of the tappet member 35. .

  The tappet member 35 has the nozzle part 40 located in the front part of a piston cylinder apparatus. The nozzle portion 40 is formed in a cylindrical shape for injecting compressed air, is attached to the front end portion of the tappet member 35, and slides in the front-rear direction inside the air injection port 14 provided at the front end portion of the cylinder 12. It is possible to move. Further, the tappet member 35 is provided with an elastic means 41 for accumulating pressure when retreating.

  A bullet inlet 42 is provided at the front end where the nozzle portion 40 is moved backward and forward according to the backward movement of the tappet member 35. The bullet inlet 42 is a terminal end of the supply path 44 of the spherical bullet 43 supplied one by one, and is opened at a location from the air injection port 14 to the barrel 46. Inside the barrel end is a loading chamber 45 into which a bullet 43 is loaded. The bullet feed port 42 is closed by the advancement of the nozzle portion 40. In the figure, 47 is a cut-off lever for turning off the motor power, and engages with a projection 49 coaxial with the sector gear 31. Reference numeral 48 denotes a latch for preventing reverse rotation of the gears of the reduction gear set.

Next, the operation of the nozzle unit drive mechanism in the bullet firing device of the simulated gun according to the present invention constructed as above will be described. The nozzle unit drive mechanism 20 of the apparatus 10 includes a power supply and a control circuit (not shown). When the power is turned on, for example, by a trigger operation of a simulated gun, the motor of the drive source 21 starts and starts operation. Take the configuration to do. FIG. 1 shows a state before starting, and the rack 32 of the piston 13 is at the rear end of the toothless portion 34.

  Now, when the trigger is pulled and the power is turned on, the motor starts to rotate, the power transmitted through the reduction gear set 30 rotates the sector gear 31 to the right in the figure, and the first tooth of the toothed portion 33 is the rack 32. Meshes with the first tooth of the piston 13 so that the piston 13 begins to retract. As the piston 13 moves backward, the urging member 15 starts accumulating, and the meshing of the toothed portion 33 with the teeth proceeds. When the last tooth of the toothed portion 33 meshes with the last tooth of the rack 32, the piston 13 approaches the retreat limit.

  On the other hand, the member having the sector gear 31 also has the first teeth 37 and the second teeth 38 coaxially, and the first teeth 37 correspond to the tappet member 35 almost simultaneously with the retraction of the piston 13. It will be in the state which meshes with the tooth | gear 36 (FIG. 2), a movement will be started back, and the elastic means 41 will be accumulated. Further, when the second tooth 38 is caught on the crest 39 of the mating tooth 36, the tappet member 35 is held back for a while as shown in FIGS. As a result, the bullet opening 42 is opened, and a single bullet 43 is sent in front of the air injection port 14 (FIG. 4).

  When the sector gear 31 further rotates, the second tooth 38 that has been caught by the peak 39 of the mating tooth 36 passes through the peak 39, and as a result, the tappet member 35 is returned to its original position by releasing the accumulated pressure of the elastic means 41. Returning, the bullet 43 is loaded into the loading chamber 45, and the bullet inlet 42 is closed by the nozzle 40 (FIG. 4). Further, in the piston 13, the last tooth of the toothed portion 33 of the sector gear 31 is disengaged from the mesh with the rack 32, so that the piston 13 advances instantaneously by receiving the resilient force of the strong compression spring as the biasing means 15. And compress the air in the cylinder. Thus, when compressed air is generated and injected from the air injection port 14, one bullet 43 loaded in the bullet chamber 45 is fired (FIG. 5).

  As described above, according to the present invention, the first gear 37 and the second teeth 37, which have the reduction gear set 30 that communicates the motor, that is, the drive source 21 and the tappet member 35, are very compact and are coaxial with the sector gear 31. With the configuration of the teeth 38 and the mating teeth 36 of the tappet member 35 with which the teeth 38 mesh, the power is transmitted more reliably than in the cam engagement method, so that the reliability is high and the wear rate is also reduced.

It is a sectional view showing an example of a nozzle part drive mechanism in a bullet firing device of a simulated gun concerning the present invention, and showing a state before an operation. It is sectional drawing which shows the state which the piston and the tappet member started reverse. It is sectional drawing which shows the state which the piston and the tappet member further retracted, and the bullet was pushed out to the single shot bullet hole. It is sectional drawing which shows the state which the tappet member moved forward and mounted and the piston reached the retreat limit vicinity. It is sectional drawing which shows the state which the piston advanced, the compressed air was produced | generated, and the bullet was discharged. Explanatory drawing which shows the engagement relationship of a sector gear and a tappet member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bullet launch engine part of simulated gun 11 Gun main body 12 Cylinder 13 Piston 14 Air injection port 15 Energizing member 20 Nozzle part drive mechanism 21 Drive source 22, 23, 24, 25, 26, 27, 28, 29 Gear 30 Reduction gear Set 31 Sector gear 32 Rack 33 Toothed part 34 Toothless part 35 Tappet member 36 Opposite tooth 37 First tooth 38 Second tooth 39 Mountain 40 Nozzle part 41 Elastic means 42 Bullet opening 43 Bullet 45 Loading chamber

Claims (3)

The moving part of the piston cylinder device is moved backward by the rotation of the motor, and then the moving part is moved forward by the elastic force of the urging means to generate compressed air. The tappet member linked with the moving backward and forward is used to open and close the bullet opening. In a bullet launcher for a simulated gun that loads bullets, the sector gear provided in the movable part of the piston cylinder device and meshed with the rack is provided coaxially with the gear of the gear set that reduces the rotation of the motor. On the rear part of the tappet member that communicates with the bullet hole, there is provided a mating tooth that meshes with the tooth provided coaxially with the sector gear, and the mating tooth comprises two ridges and one valley, and the tooth provided coaxially with the sector gear. Is a first tooth that enters the valley between the two ridges and engages with the first tooth, and a second tooth that follows the first tooth and is engaged with the ridge of the mating tooth of the tappet member. The second teeth are formed to be slightly longer in the rotational direction as much as the first two teeth in order to hold the tappet member in the retracted state while being caught in the crest of the tappet member. The nozzle part located at the front part of the piston cylinder device is provided at the front part of the tappet member, and the nozzle part located at the front part of the piston cylinder device is moved backward and forward according to the backward movement of the tappet member. A nozzle drive mechanism that moves forward and opens and closes the bullet hole. 2. The nozzle portion is slidably disposed in an air injection port located at a front portion of the piston cylinder device so as to be slidable in the front-rear direction, and is movably provided in the front portion of the tappet member in that state. Nozzle drive mechanism in a bullet launcher for a simulated gun. 3. The simulated gun bullet firing according to claim 1 or 2, wherein the tappet member is retracted by meshing with a tooth provided coaxially with the sector gear, and the elastic means for advancing the tappet member to the original position is accumulated by retraction. The nozzle part drive mechanism in an apparatus.

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