CN214232753U - Missile military toy vehicle - Google Patents

Abstract

The utility model relates to a guided missile military toy car, which comprises a carriage body, embrace the frame, the barrel, the subassembly of going up the thorax, advance the subassembly, the switch module, the trajectory subassembly, launch subassembly and sponge bullet, the trajectory subassembly corresponds to set up downthehole in the dress bullet of barrel front end, advance the fixed intercommunication of subassembly to set up at the rear end of trajectory subassembly and advance the subassembly and meet the inside cavity of launching that is equipped with of department with the trajectory subassembly, launch the unit mount and launch the intracavity, the subassembly of going up the thorax slides and sets up at barrel rear portion and its front end and is connected with the subassembly rear end that advances, the switch module activity sets up inside the barrel and with advance the sincere cooperation of subassembly card, the sponge bullet is installed in the trajectory subassembly and with launch the cooperation of subassembly front end butt. The utility model discloses can simulate the transmission and the loading mode of guided missile car, equip the experience of enlightening for the user brings different military, the image feels good simultaneously, and the nature of playing is strong.

Description

Missile military toy vehicle

Technical Field

The utility model belongs to the technical field of the toy, concretely relates to guided missile military toy car.

Background

With the improvement of living standard, people have higher and higher requirements on toys for children, such as toy cars, and people pay much attention to the functions of the toy cars and the playing modes of the toy cars. The prior toy military vehicle can only realize the effects of advancing, turning or sound and light, even if a shell (missile) part imitating the military vehicle is arranged on the prior toy military vehicle, the shell part is fixedly arranged on the prior toy military vehicle and only has the decoration effect, does not have more characteristics and lacks the interest.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of prior art, the utility model aims to solve the technical problem that a guided missile military toy car is provided, it can simulate the transmission and the bullet loading of guided missile car, and it is experienced to enlighten to bring different military equipment for the user.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the missile military toy car comprises a car body, a holding frame, a bullet barrel, a loading assembly, a propelling assembly, a switch assembly, a trajectory assembly, a launching assembly and a sponge bullet, wherein the loading assembly, the propelling assembly, the switch assembly, the trajectory assembly, the launching assembly and the sponge bullet are arranged in the bullet barrel; the ballistic component corresponds to set up downthehole at the dress bullet of bullet section of thick bamboo front end, advance the fixed intercommunication setting of subassembly and advance the subassembly and meet the inside chamber of launching that is equipped with of department at the rear end of ballistic component, launch the unit mount and launch the intracavity, it slides and sets up and is connected with the propulsion component rear end at a bullet section of thick bamboo rear portion and its front end to go up the thorax subassembly, switch module activity sets up inside the bullet section of thick bamboo and with the sincere cooperation of propulsion component card, the sponge bullet is installed in the ballistic component and with launch the cooperation of subassembly front end butt.

Preferably, the trajectory subassembly includes bullet way pipe, bullet way board and pilot pin, bullet way pipe card dress is equipped with the trajectory chamber that is used for installing the sponge bullet in the inside and its of bomb tube, bullet way board joint is equipped with air current via hole and extrusion hole on bullet way pipe rear end and on it, pilot pin fixed mounting is on bullet way board and stretches into the trajectory intracavity, trajectory chamber and launch and be linked together through the air current via hole between the chamber.

Preferably, the ejection assembly comprises a power spring and an ejection plate, a baffle ring is arranged at the front end of the propulsion assembly and inside the ejection cavity, the ejection plate is movably arranged in the ejection cavity and provided with an air flow guide hole and an extrusion column which correspondingly penetrates through the extrusion hole to enter the ballistic cavity, and two ends of the power spring are connected or abutted between the ejection plate and the baffle ring.

Preferably, the propelling component comprises a propelling pipe, a propelling rod and a propelling spring, the propelling pipe is clamped inside the barrel, the front end of the propelling pipe is sleeved with the rear end of the ballistic component, the propelling rod extends into the propelling pipe from back to front, a sealing head is arranged at the front end of the propelling rod, the propelling spring sleeved outside the propelling rod is fixedly connected between the sealing head and the inner wall of the rear end of the propelling pipe, the rear end of the propelling rod is connected with the loading component, and a switch concave position in clamping fit with the switch component is arranged on the propelling rod.

Preferably, the switch assembly comprises a launching button, a switch board and a switch restoring body, the switch board is provided with a through hole for the push rod to pass through, the bottom wall of the through hole is clamped and matched with the switch concave position, the switch restoring body is arranged between the switch board and the inner wall of the bomb tube, the acting direction of the switch restoring body enables the switch board to face upwards, and the launching button is clamped on the bomb tube and connected with the top of the switch board.

Preferably, the loading assembly comprises a pull rod and a loading plate, two slide holes are symmetrically formed in the side wall of the barrel, the loading plate is in sliding fit with the inside of the barrel and is provided with two pull blocks protruding out of the slide holes respectively, the rear end of the pull rod is fixedly connected to the loading plate, the front end of the pull rod is in sliding connection with the pushing rod through a short shaft, and a moving hole is formed in the rear end of the pushing rod.

Preferably, a limiting shaft for limiting the advancing position of the upper chamber plate is arranged in the barrel, and a limiting hole is formed in the position, corresponding to the limiting shaft, of the pull rod.

Preferably, the unblock subassembly includes lock seat, unblock pole and reset spring, the lock seat is adorned on the automobile body admittedly, unblock pole sliding fit is on the lock seat and its rear portion is equipped with the baffle, the reset spring sets up in the lock seat and overlaps at the unblock pole rear portion, the position department intercommunication that unblock pole and lock seat correspond the hasp is provided with the lockhole, hasp and lockhole clearance fit are in order to pin or release and embrace the frame.

Preferably, embrace and press from both sides the subassembly including embracing the clamp box, embracing the holder, tensioning spring and two armful arms, embrace clamp box fixed mounting and embrace on embracing the frame, embrace holder fixed mounting and be provided with two pin joints seats in embracing one side of pressing from both sides the box that is close to the cartridge case and its upper symmetry, two armful arms are respectively through the round pin axle pin joint on two pin joints seat and each one end of embracing the arm stretches into in embracing the clamp box, tensioning spring sets up and embraces arm looks butt with two respectively at its both ends in embracing the clamp box.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses guided missile military toy car includes the automobile body, embrace the frame, the barrel and set up at the inside subassembly of going to the chest of barrel, impel the subassembly, the switch module, the trajectory subassembly, launch subassembly and sponge bullet, embrace the frame and the barrel can be upwards overturned around the articulated seat of automobile body rear end and utilize the support frame to prop ground or overturn downwards and utilize the unblock subassembly locking on the automobile body, can simulate the action of going to the ground of guided missile car, and embrace the frame through the unblock subassembly locking and the barrel can avoid the automobile body in-process of marcing to rock or break away from, also portable and packing.

2. The bullet loading device comprises a bullet tube, a bullet loading component, a switch component, a power spring and a power spring, wherein the bullet loading component is correspondingly arranged in a bullet loading hole at the front end of the bullet tube, the propulsion component is fixedly communicated with the rear end of the bullet loading component, a bullet ejecting cavity is arranged in the joint of the propulsion component and the bullet loading component, the bullet ejecting component is arranged in the bullet ejecting cavity, the loading component is arranged at the rear part of the bullet tube in a sliding mode, the front end of the loading component is connected with the rear end of the propulsion component, the switch component is movably arranged in the bullet tube and is in clamping and matching with the propulsion component, the sponge bullet is arranged in the bullet loading component and is in butt matching with the front end of the bullet ejecting component, when the bullet is loaded, a positioning pin is inserted into a positioning cavity at the rear end of the sponge bullet to play a guiding and positioning role, when the sponge bullet is abutted with the extrusion column and is continuously pressed into the sponge bullet, the extrusion column is pressed backwards along the extrusion hole by overcoming the elastic force of the power spring, and is kept by the friction resistance between the sponge bullet loading cavity wall of the bullet loading cavity; the loading assembly is pushed and pulled backwards to drive the pushing rod to retreat, then the pushing spring is compressed to store energy, and the loading state is kept by utilizing the clamping and matching of the switch concave position and the switch assembly after the loading is in place; when the launching button is pressed, the compressed propelling spring is used for resetting and rebounding, the propelling rod is driven to move forwards along the inner cavity of the propelling tube, the sealing head of the propelling rod is in sealing fit with the propelling tube, the airflow at the front part of the propelling tube is compressed to form airflow impact force in the process of moving forwards, the airflow rushes into the trajectory cavity through the airflow guide hole in the launching plate and the airflow through hole in the trajectory plate, and then the sponge projectile is launched out of the trajectory component by utilizing the airflow impact force and the rebounding force of the power-assisted spring, so that the launching and loading modes of the missile vehicle can be simulated, different military equipment inspiring experiences are brought to users, and meanwhile, the visual feeling is good, and the playing performance is strong.

Drawings

Fig. 1 is a schematic structural view of the missile military toy car of the utility model.

Fig. 2 is a schematic view of the structure of the frame and the cartridge of the present invention.

Fig. 3 is the assembly schematic diagram of the holding frame and the unlocking assembly of the utility model.

Fig. 4 is a schematic view of the structure of the holding frame of the present invention.

Fig. 5 is a schematic view of the clamping assembly of the present invention.

Fig. 6 is a schematic diagram of the internal structure of the cartridge of the present invention.

Fig. 7 is an assembly diagram of the loading assembly, the switch assembly, the propulsion assembly, the ballistic assembly and the sponge bullet according to the present invention.

Fig. 8 is a schematic view of the structure of the propulsion rod of the present invention.

Fig. 9 is a schematic view of the inner structure of the ejection chamber of the present invention.

Fig. 10 is a schematic view of the combination of the ejection plate and the ballistic plate of the present invention.

Fig. 11 is a schematic diagram of the ejection plate structure of the present invention.

The labels in the figure are: 10. a vehicle body; 11. a hinged seat; 12. a lifting cylinder; 13. a lock seat; 14. an unlocking lever; 15. a reset spring; 20. a cartridge; 21. a restraining shaft;

30. a holding frame; 31. locking; 32. a clamping box; 33. a clamping seat is embraced; 34. tensioning the spring; 35. an arm-embracing;

40. a loading assembly; 41. feeding a hearth plate; 42. a pull rod; 43. pulling the block; 44. a limiting aperture;

50. a propulsion assembly; 51. an ejection cavity; 52. a baffle ring; 53. a propulsion tube; 54. a push rod; 55. a propulsion spring; 56. a sealing head; 57. a switch is in a concave position; 58. moving the hole;

60. a ballistic assembly; 61. a ballistic tube; 62. a ballistic plate; 63. a positioning pin; 64. a ballistic cavity; 620. an air flow aperture;

71. ejecting a plate; 72. a power-assisted spring; 711. an air flow guide hole; 712. extruding the column; 80. a switch assembly; 81. a switch plate; 82. a launch button; 90. a sponge bullet.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 11, the present embodiment provides a missile military toy vehicle, which comprises a vehicle body 10, a cradle 30, a cartridge 20, a loading assembly 40 arranged inside the cartridge 20, a propelling assembly 50, a switch assembly 80, a ballistic assembly 60, an ejection assembly and a sponge bullet 90, wherein the sponge bullet 90 is separated from the ballistic assembly 60 of the cartridge 20 and is ejected after a launching action is performed.

In this embodiment, the rear end of the vehicle body 10 is fixedly provided with a hinge seat 11, and the front end is provided with an unlocking assembly. The rear end of the holding frame 30 is rotatably arranged on the hinged seat 11 at the rear end of the vehicle body 10 through a rotating shaft, the lifting cylinder 12 is hinged between the holding frame 30 and the hinged seat 11, the front end of the holding frame 30 is arranged on the unlocking assembly at the front end of the vehicle body 10 through the lock catch 31, the rear end of the bomb tube 20 is rotatably arranged on the hinged seat 11 at the rear end of the vehicle body 10 through the support frame, therefore, the holding frame 30 and the bomb tube 20 can be upwards overturned around the hinged seat 11 at the rear end of the vehicle body 10 to be supported by the support frame or downwards overturned to be locked on the vehicle body 10 through the unlocking assembly, the holding frame 30 and the bomb tube 20 are locked through the unlocking assembly, the vehicle body 10 can be prevented from shaking or breaking away in the advancing process, and the.

Wherein the unblock subassembly includes lock seat 13, unblock pole 14 and reset spring 15, lock seat 13 is adorned on automobile body 10 admittedly, unblock pole 14 sliding fit is equipped with the baffle on lock seat 13 and its rear portion, reset spring 15 sets up in lock seat 13 and overlaps at unblock pole 14 rear portion, unblock pole 14 and lock seat 13 correspond the position department intercommunication of hasp 31 and are provided with the lockhole, hasp 31 and lockhole clearance fit are in order pinning or releasing and embrace frame 30, the protruding lock seat 13 of one end of unblock pole 14 is as the button, presses the button when needing the unblock, overcomes reset spring 15 and drives lockhole and the hasp 31 separation on the unblock pole 14, can lift and embrace frame 30.

In this embodiment, the front portion of the cartridge 20 is clasped by a clasping assembly to be disposed on the clasping frame 30. Embrace and press from both sides the subassembly including embracing double-layered box 32, embracing double-layered seat 33, tensioning spring 34 and two armful arms 35, embrace double-layered box 32 fixed mounting on embracing frame 30, embrace double-layered seat 33 fixed mounting embrace one side of pressing from both sides box 32 that is close to cartridge 20 and its symmetry is provided with two pin joint seats, two armful arms 35 are respectively through the round pin axle joint on two pin joint seats and each one end of embracing arm 35 stretches into in embracing double-layered box 32, tensioning spring 34 sets up in embracing double-layered box 32 and its both ends respectively with two armful arms 35 looks butt, utilize tensioning spring 34 to embrace the arm 35 lower extreme to apply the extrusion force to both sides for the upper end of two armful arms 35 is embraced cartridge 20 tightly mutually, and need relieve the armful clamp then manual to both sides and embrace arm 35 upper end off with the arm with the fingers and thumb.

In this embodiment, the ballistic assembly 60 is correspondingly disposed in the loading hole at the front end of the bullet tube 20, the propelling assembly 50 is fixedly communicated with the rear end of the ballistic assembly 60, an ejection cavity 51 is disposed inside the junction of the propelling assembly 50 and the ballistic assembly 60, the ejection assembly is mounted in the ejection cavity 51, the loading assembly 40 is slidably disposed at the rear end of the bullet tube 20, the front end of the loading assembly is connected to the rear end of the propelling assembly 50, the switch assembly 80 is movably disposed inside the bullet tube 20 and is in latching engagement with the propelling assembly 50, and the sponge bullet 90 is mounted in the ballistic assembly 60 and is in abutting engagement with the front end of the ejection assembly.

The ballistic assembly 60 comprises a ballistic tube 61, a ballistic plate 62 and a positioning pin 63, the ballistic tube 61 is clamped inside the barrel 20 and is provided with a ballistic cavity 64 for installing a sponge bullet 90 therein, the sponge bullet 90 and the ballistic cavity 64 are in interference fit to generate certain frictional resistance, the ballistic plate 62 is clamped at the rear end of the ballistic tube 61 and is provided with an air flow through hole 620 and a pressing hole, the positioning pin 63 is fixedly installed on the ballistic plate 62 and extends into the ballistic cavity 64, and the ballistic cavity 64 and the ejection cavity 51 are communicated through the air flow through hole 620.

The ejection assembly comprises an assistance spring 72 and an ejection plate 71, a stop ring 52 is arranged at the front end of the propelling assembly 50 and inside the ejection cavity 51, the ejection plate 71 is movably arranged in the ejection cavity 51 and is provided with an air flow guide hole 711 and an extrusion column 712 correspondingly penetrating through the extrusion hole and entering the ballistic cavity 64, two ends of the assistance spring 72 are connected or abutted between the ejection plate 71 and the stop ring 52, after the sponge bullet 90 is loaded, the positioning needle 63 is inserted into the positioning cavity at the rear end of the sponge bullet 90 to play a guiding and positioning role, when the sponge bullet 90 abuts against the extrusion column 712 and is continuously pressed into the sponge bullet 90, the extrusion column 712 is pressed backwards along the extrusion hole by overcoming the elastic force of the assistance spring 72, and after the sponge bullet is loaded in place, the sponge bullet 90 is kept by using the frictional resistance between the sponge bullet 90 and the wall of the ballistic cavity 64.

In this embodiment, the propelling assembly 50 includes a propelling tube 53, a propelling rod 54 and a propelling spring 55, the propelling tube 53 is clamped inside the barrel 20, and the front end of the propelling tube 53 is sleeved with the rear end of the ballistic tube 61, the propelling rod 54 extends into the propelling tube 53 from the rear to the front, the front end of the propelling rod 54 is provided with a sealing head 56, the propelling spring 55 sleeved outside the propelling rod 54 is fixedly connected between the sealing head 56 and the inner wall of the rear end of the propelling tube 53, the rear end of the propelling rod 54 is connected with the loading assembly 40, the propelling rod 54 is provided with a switch recess 57 in clamping fit with the switch assembly 80, the loading assembly 40 is pushed and pulled backwards to drive the propelling rod 54 to retreat, and then the propelling spring 55 is compressed to store energy, and the loading state is maintained by the clamping fit of the switch recess 57 and the switch assembly 80 after the loading is in place.

The loading assembly 40 of the embodiment includes a pull rod 42 and a loading plate 41, two sliding holes are symmetrically arranged on the side wall of the barrel 20, the loading plate 41 is slidably fitted inside the barrel 20 and has two pull blocks 43 respectively protruding out of the sliding holes, the rear end of the pull rod 42 is fixedly connected to the loading plate 41, the front end of the pull rod 42 is slidably connected to the push rod 54 through a short shaft, the rear end of the push rod 54 is provided with a moving hole 58, the loading plate 41 is pulled backwards through the pull blocks 43, the pull rod 42 is pulled backwards, the push rod 54 can be pulled backwards until a switch concave 57 on the push rod 54 is engaged with the switch assembly 80, and when the engagement relationship between the switch assembly 80 and the switch concave 57 is released, the push rod 54 is pushed forwards and can drive the pull rod 42 to reset forwards. In order to avoid the loading assembly 40 from rushing out of a preset range forwards, a limiting shaft 21 for limiting the advancing position of the loading plate 41 is arranged inside the bullet tube 20, and a limiting hole 44 is arranged at the position, corresponding to the limiting shaft 21, of the pull rod 42.

Switch module 80 of this embodiment includes transmission button 82, switch board 81 and switch restoring body, be equipped with the through-hole that supplies push rod 54 to pass and through-hole diapire on the switch board 81 and the sincere cooperation of switch concave position 57, switch restoring body sets up between switch board 81 and the inner wall of bomb tube 20 and its direction of action makes switch board 81 upwards, transmission button 82 joint is on bomb tube 20 and is connected with the switch board 81 top. In the loaded state, the switch reset extends and pushes the switch board 81 and the launch button 82 to lift the projecting cartridge 20, and when the launch button 82 is pressed to launch, the switch reset compresses the switch reset and makes the switch board 81 and the switch concave 57 disengage from the latching relationship, i.e. the restriction effect on the push rod 54 is released, then the compressed push spring 55 resets and rebounds to drive the push rod 54 to rush forward along the inner cavity of the push tube 53, because the sealing head 56 of the push rod 54 is in sealing fit with the push tube 53, the air flow at the front part of the push tube 53 is compressed during the forward stroke to form air flow impact force, and the air flow rushes into the ballistic cavity 64 through the air flow guide hole 711 on the launch board 71 and the air flow through hole 620 on the ballistic board 62, then the sponge bullet 90 is launched from the ballistic component 60 by the air flow impact force and the resilience force of the power-assisted spring 72, and the launch board 71 is blocked by the ballistic board 62 and still stays in the launch cavity 51, the crush column 712 re-extends into the ballistic cavity 64 through the crush hole.

Having shown and described the fundamental principles and the principal features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (9)

1. Missile military toy car, its characterized in that: the device comprises a vehicle body, a holding frame, a cartridge, a loading assembly, a propelling assembly, a switch assembly, a trajectory assembly, a launching assembly and a sponge cartridge, wherein the loading assembly, the propelling assembly, the switch assembly, the trajectory assembly, the launching assembly and the sponge cartridge are arranged in the cartridge; the ballistic component corresponds to set up downthehole at the dress bullet of bullet section of thick bamboo front end, advance the fixed intercommunication setting of subassembly and advance the subassembly and meet the inside chamber of launching that is equipped with of department at the rear end of ballistic component, launch the unit mount and launch the intracavity, it slides and sets up and is connected with the propulsion component rear end at a bullet section of thick bamboo rear portion and its front end to go up the thorax subassembly, switch module activity sets up inside the bullet section of thick bamboo and with the sincere cooperation of propulsion component card, the sponge bullet is installed in the ballistic component and with launch the cooperation of subassembly front end butt.

2. The missile military toy vehicle of claim 1, wherein: the ballistic trajectory subassembly includes bullet way pipe, bullet way board and pilot pin, ballistic trajectory pipe strap dress is equipped with the ballistic trajectory chamber that is used for installing the sponge bullet in inside and its of a bullet section of thick bamboo, bullet way board joint is equipped with air current via hole and extrusion hole on bullet way pipe rear end and on it, pilot pin fixed mounting is on bullet way board and stretches into the ballistic trajectory intracavity, the ballistic trajectory chamber is linked together through the air current via hole with launching between the chamber.

3. The missile military toy vehicle of claim 2, wherein: the ejection assembly comprises a power spring and an ejection plate, a baffle ring is arranged at the front end of the propulsion assembly and positioned in the ejection cavity, the ejection plate is movably arranged in the ejection cavity, is provided with an air flow guide hole and corresponds to an extrusion column penetrating through the extrusion hole to enter the ballistic cavity, and two ends of the power spring are connected or abutted between the ejection plate and the baffle ring.

4. The missile military toy vehicle of claim 1, wherein: the propelling assembly comprises a propelling pipe, a propelling rod and a propelling spring, the propelling pipe is clamped inside the barrel, the front end of the propelling pipe is sleeved with the rear end of the ballistic assembly, the propelling rod extends into the propelling pipe from back to front, a sealing head is arranged at the front end of the propelling rod, the propelling spring sleeved outside the propelling rod is fixedly connected between the sealing head and the inner wall of the rear end of the propelling pipe, the rear end of the propelling rod is connected with the loading assembly, and a switch concave position matched with the switch assembly in a clamping mode is arranged on the propelling rod.

5. The missile military toy vehicle of claim 4, wherein: the switch assembly comprises a launching button, a switch board and a switch restoring body, wherein the switch board is provided with a through hole for the push rod to pass through, the bottom wall of the through hole is clamped and matched with the switch concave position, the switch restoring body is arranged between the switch board and the inner wall of the bomb tube, the acting direction of the switch restoring body is upward, and the launching button is clamped on the bomb tube and connected with the top of the switch board.

6. The missile military toy vehicle of claim 4, wherein: the barrel loading assembly comprises a pull rod and a barrel loading plate, two sliding holes are symmetrically formed in the side wall of the barrel, the barrel loading plate is in sliding fit with the inside of the barrel and is provided with two pull blocks protruding out of the sliding holes respectively, the rear end of the pull rod is fixedly connected to the barrel loading plate, the front end of the pull rod is in sliding connection with the pushing rod through a short shaft, and a moving hole is formed in the rear end of the pushing rod.

7. The missile military toy vehicle of claim 6, wherein: the limiting shaft used for limiting the advancing position of the upper chamber plate is arranged in the cartridge, and the limiting hole is formed in the position, corresponding to the limiting shaft, of the pull rod.

8. The missile military toy vehicle of claim 1, wherein: the unlocking assembly comprises a lock seat, an unlocking rod and a reset spring, the lock seat is fixedly arranged on the vehicle body, the unlocking rod is in sliding fit on the lock seat, a baffle is arranged at the rear part of the unlocking rod, the reset spring is arranged in the lock seat and sleeved at the rear part of the unlocking rod, a lock hole is communicated with the position, corresponding to the lock catch, of the unlocking rod and the lock seat, and the lock catch is in movable fit with the lock hole to lock or release the holding frame.

9. The missile military toy vehicle of claim 1, wherein: embrace and press from both sides the subassembly including embracing double-layered box, embracing holder, tensioning spring and two armful arms, embrace double-layered box fixed mounting and embrace on embracing the frame, embrace holder fixed mounting and be provided with two pin joint seats in embracing one side of pressing from both sides the box that is close to the barrel and its upper symmetry, two armful arms are respectively through the round pin axle pin joint on two pin joint seats and respectively embrace the one end of arm and stretch into in embracing the double-layered box, tensioning spring sets up in embracing the double-layered box and its both ends respectively with two armful arm looks butt.

Images