JP3418390B1 - gun - Google Patents

Abstract

A so-called blow-back type gun in which a slide cover of a gun body moves backward is provided on a fitting portion of a guide rail so that the slide cover can slide smoothly on a guide rail that guides the slide cover on the gun body. Was designed with some room. However, rattling occurred in the gap. A gun having a gun body (1) and a sliding member (14) slidably supported on or inside the gun body,
A guide rotating body 31 for slidingly guiding the sliding member 14 is provided on the upper part of the gun body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toy air gun that fires a plastic bullet called a BB bullet by a pressure of a filling gas, a firearm, and the like.

[0002]

2. Description of the Related Art Conventionally, a so-called blowback type gun in which a slide cover of a gun body is moved backward has been known. For example, it is a technique disclosed in Japanese Patent Laid-Open No. 10-220991. This technology uses a bullet firing passage, a bullet gripping chamber at its rear end, a detachable magazine, a gas accumulator chamber, a cylinder with a double cylindrical structure having a penetrating element for guiding the piston in the center, and a front end for the bullet gripping It can be inserted into the chamber, and the first half has a cylindrical shape, and the latter half has a lateral hole that reaches the outer peripheral surface at the bottom of the first half cylindrical portion, and the cylinder and the piston are enclosed and slidable on the gun body It has a structure including a slide cover supported by.

[0003]

In the blowback type gun described above, the slide cover is slidably guided.
For this purpose , guide rails are provided on the gun body in the front-back direction (with the bullet firing exit side as the front). In such a structure, the slide cover is slid when the bullet is loaded in a predetermined position from the magazine or when the bullet is fired by pulling the trigger (trigger). There is a slight gap between the guide rail and the fitting portion of the slide cover so that the slide rail can slide. However, this gap is necessary in order to absorb thermal expansion between the gun body and the slide cover to allow smooth sliding, but the part that rubs during sliding does not wear evenly, and uneven wear occurs. As a result, there is a problem that rattling occurs between the slide cover and the rail, and abnormal noise occurs. Further, dust generated by abrasion deteriorates sliding and deteriorates the sealing property of the valve.

[0004]

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described below.

That is, in claim 1, the gun body and the gun
Has a slide cover slidably supported on the main body
A guide for a slide cover on the upper part of the gun
Rails are installed, and guide rotating bodies are installed on the left and right of the guide rail.
It is provided before and after a plurality .

According to a second aspect of the present invention, there is provided a gun having a gun body and a slide cover slidably supported on the gun body, wherein a guide rail of the slide cover is provided on an upper portion of the gun body, and the inside of the slide cover is provided. Guide rotating bodies are provided on the left and right sides of the guide rotating body, and a plurality of the guide rotating bodies are provided in front and rear .

In the third aspect, the piston is provided at the rear of the barrel.
A gun in which a cylinder device is arranged, said piston
Place a rotating body between the cylinder and the cylinder, and
The ton is slidably inserted .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment in which the slide cover guide mechanism for a gun of the present invention is applied to a toy gun will be described.
This will be described below. FIG. 1 is a sectional view of a main part showing a normal state of a toy air gun of the present invention, FIG. 2 is an exploded perspective view showing a state where a slide cover is removed from a gun body, and FIG. 3 is a side view of the gun showing a sliding state of the slide cover in order. 4 is a plan view of the gun body showing the guide rail portion and a view of the slide cover seen from below, FIG. 5 is a view of the slide cover seen from below in the second embodiment, and FIG. 6 is shown in the second embodiment. 7 is a perspective view of the guide rail in the third embodiment, FIG. 8 is a perspective view of the guide rail in the fourth embodiment, and FIG. 9 is a perspective view of the guide rail in the fifth embodiment. FIG. 10 is a sectional view of a main part of a gun according to a sixth embodiment, FIG.
FIG. 1 is a sectional view of a cylinder and a piston in a sixth embodiment.

First, the overall structure of the toy gun will be described below. As shown in FIG. 1, inside the grip part 2 of the gun body 1, a magazine part 4 for storing a large number of bullets 3 ...
A magazine 6 having a gas accumulator chamber 5 filled with gas is detachably provided. As the compressed gas, nitrogen gas, carbon dioxide gas, air or the like is used in addition to CFC gas, and the gas accumulator chamber 5 is filled in a liquid state. In the magazine section 4, the bullet 3 is pushed upward by the spring 7. An elastic nozzle 10 forming a gas release valve 8 and a gas passage 9 is provided above the gas pressure accumulating chamber 5, and in the normal state, the passage 9 is formed by the valve 8.
Is blocked. An inner barrel 12 serving as a passage for the fired bullet 3 is fixed inside the barrel 11, and a bullet holding chamber 13 made of a rubber tubular body is provided at the rear end of the barrel. The inner diameter of the bullet gripping chamber 13 is slightly smaller than the outer diameter of the bullet 3, and the bullet 3 is tightened by the reaction force spread by the bullet 3. Further, a ridge having an inner diameter smaller than the inner diameter of the chamber is provided on the inner peripheral surface of the chamber, and the bullet 3 is held in such a manner that the bullet 3 is dammed by the ridge. A slide cover (sliding body) 14 is provided so as to cover the inner barrel 12, the piston 20 and the cylinder 15 arranged behind the inner barrel 12, and slidably supports the cylinder 15. Slide cover 14
A return spring 16 is provided between the gun body 1 and the gun body 1, and the slide spring 14 moved rearward is pulled back to the original position by the return spring 16.

Further, the gun body 1 is provided with a trigger 17 arranged at the front part of the grip portion 2 and a hammer 18 interlocking with the trigger 17 at the rear of the gun body 1. By pulling the trigger 17, the hammer 18 is not shown.
The sear that locks is rotated, the lock is released, and the hammer 18 is rotated by the force of the accumulator spring. The hammer 18 strikes the impact plate, and the impact plate uses the projection 19 of the discharge valve 8 as a spring force. It is configured to push against and open the gas passage 9 so that gas is ejected and the bullet 3 is fired from the muzzle.

A piston 20 is fixed inside the slide cover 14 slidably provided on the gun body 1, and a cylinder 15 is slidably attached to the piston 20. An engagement protrusion 27 with which the slide cover 14 is engaged is provided on the upper side of the cylinder 15 and is configured to move with the rearward movement of the slide cover 14. A spring 28 is interposed between the engagement protrusion 27 and the slide cover 14.

Next, the guide rail 30 that slides and guides the slide cover 14, which is an essential part of the present invention, will be described. The guide rail 30 shown in FIG.
Is installed horizontally on top of the. Slide cover 1
4 is guided by the guide rail 30 and is slidable back and forth on the gun body 1 as shown in FIG. The guide rails 30 are arranged in two rows in the front-back direction in parallel with the barrel 11 in a plan view, and a central portion where the cylinder 15 and the like are arranged is cut out. On the side of the slide cover 14, guide recesses 32 that fit with the guide rails 30 are provided inside the left and right sides in the horizontal front-rear direction (see FIG. 4).

In the present invention, a guide roller (guide rotating body) 31 as a guide member of the slide cover is rotatably arranged at an arbitrary position on the guide rail 30.
In the present embodiment, the left and right guide rails 30 are provided at four positions at the front end and the rear end, but the mounting position and the number are not limited, and a pair of guide rollers 31, 31 are provided on both the left and right sides.
And a pair of left and right guide rollers 31 as a set.
-Multiple sets of 31 can be arranged in the front-rear direction. Alternatively, the pair of guide rollers 31 and 31 may be disposed on both the left and right sides, and the protrusions having lubricity may be disposed on the left and right sides as shown in FIG. Further, it is possible to guide more stably by arranging a large number of guide rollers 31 in the front-rear direction, and it is possible to arrange six or more guide rollers. Further, it is preferable to dispose the front and rear guide rollers on the front, rear, left and right sides as much as possible so that the guides can be guided stably, and it is preferable to dispose on the front end and the rear end of the gun body 1. In this embodiment, a pair of guide rollers is arranged above the trigger 17 and above the hammer 18 on the upper part of the gun body 1 to stably support the slide cover 14 at four points in the front, rear, left and right. .

The guide roller 31 is attached by cutting a part of the guide rail 30 into a cylindrical shape, and protruding the shaft 34 upward in the cutout portion, and inserting the guide roller 31 into the shaft 34. Supported rotatably. The guide roller 31
The outer end portion of the guide rail 30 is arranged so as to project more outward than the outer end surface of the guide rail 30, and the side surface of the guide roller 31 is formed inside the vertical surface of the slide cover 14.
It is arranged so as to abut the inner surface of 2. A roller bearing may be used as the guide roller 31. Further, the guide roller 31 is configured to be attachable / detachable, and when the number of times the gun is used increases, the guide roller 31
There is also the case that dust or the like adheres to the rotation and hinders the rotation.
In such a case, the guide roller 31 can be removed and replaced with a new one.

In this way, the slide cover 14 can be used when firing a bullet or when firing the bullet by pulling the trigger 17 to position the next bullet in the bullet gripping chamber.
Slides on the guide rail 30, but the slide cover 1
The guide concave portion 32 of 4 comes into contact with the guide roller 31 at a point or a line, and the other portion, that is, the guide rail 3
0 and the slide cover 14 can have a large gap, and since the guide roller 31 rolls when the slide cover 14 slides, the frictional resistance is small, there is almost no wear, and it is stable. It is supported and can be slid smoothly. In addition, since it is supported while rolling, uneven wear does not occur, and even if some distortion occurs due to temperature change, it will not rub even partly, it will be absorbed by the guide roller part and stable Can be slid. However, the guide rail 30 may be omitted, and the gun 1 main body may be slidably supported in the guide recess 32 of the slide cover 14 only by the guide rollers 31, 31.

Next, a second embodiment will be described. As shown in FIG. 5, the guide rollers 31 may be attached to the side of the slide cover 14 instead of the side of the gun body 1. That is, the guide rails 30 are provided on the upper part of the gun body 1 in the front-rear direction in the left-right direction in the same manner as above. A pair of left and right shafts 34 is provided from the back side of the upper surface of the slide cover 14 downward.
.34 is hung vertically, and the guide roller 31.
31 is rotatably supported. As shown in FIG. 6, the guide rollers 30 and 30 are arranged so as to abut on the recesses 30b and 30b formed on the outer side surfaces of the guide rails 30 and 30, respectively. However, the number and arrangement position of the guide rollers 31 are not limited. In this way, the slide cover 1
4 is slid in the same manner as described above, the guide rollers 31
Therefore, the slide cover 14 can be slid smoothly by the rolling.

Next, a third embodiment will be described with reference to FIG. This guide rail guide member uses a convex sliding guide member 33 instead of a guide rotating body such as a roller. That is, curved plate-like sliding guide members 33, 33 are attached to the respective side surfaces of the guide rails 30, 30. The radius D of the curved portion 33a of the sliding guide member 33 is
The gap between the guide rail 30 and the guide recess 32 is slightly larger than the gap between the guide rail 30 and the guide recess 32. In the sliding guide member 33 having such a configuration, even if the gap between the guide rail 30 and the guide recess 32 changes, the curved portion 33a is deformed and can respond to the change, rattling is prevented, and stability is stabilized. Can guide you. The material of the sliding guide member 33 is preferably synthetic resin or alloy having low frictional resistance and lubricity.

Next, a fourth embodiment will be described with reference to FIG. In this embodiment, the guide rail 30 is provided with a guide roller serving as a guide rotating body, or a storage portion for storing a cylindrical roller or a steel ball, and the guide roller or the cylindrical roller or a part of the steel ball is a guide. The rail 30 is configured to project from the side surface, and the projecting portion 30a is disposed so as to abut the guide recess 32. However, the number of rotating bodies arranged on the guide rail 30 is not limited, and a large number of rotating bodies can provide more stable guiding.

Further, in the above-mentioned embodiment, the side surface of the guide rail is guided, but in the fifth embodiment, as shown in FIG. 9, the side surface of the rotary member may be located on the upper surface, By being configured to guide in the up-down direction and the left-right direction, the positioning in the up-down direction and the left-right direction can be further ensured and the guide can be performed more stably. In the third, fourth and fifth embodiments, a guide member or a rotating body may be arranged on the slide cover side as in the second embodiment. Further, the technical scope of the present invention is not limited to toy guns. It is applicable to so-called blowback type guns, such as small firearms, where the slide cover of the gun body moves backward.

The present invention is not limited to application to blowback type guns, but can be applied to guns using rack gears. The sixth embodiment shows an application example to a gun using a rack gear. The structure of the gun using the rack gear will be described below with reference to FIG. The piston / cylinder device 110 is arranged behind the barrel 111, and it is possible to inject compressed air from the nozzle 13 at the front end of the cylinder 112 toward the barrel 111. A piston 114 is inserted in the cylinder so as to be slidable in the front-rear direction, and the piston 114 is pressurized by a spring 115 in a direction of compressing air in the cylinder. The cylinder itself is also provided so as to be movable in the front-rear direction.
This is for introducing the above into the loading section 117. Reference numeral 118 denotes a cylinder pressing spring.

A spring 11 that controls the compression operation of the piston 114.
5 has its rear end supported by a spring receiver 119a, and the piston 114 supports the front end of a spring 115.
The piston 114 is a member 11 that faces forward from the rear end.
9b, and a rack 121 is provided therein as a part of the gear mechanism 120.

The pinion 124 which is another element of the gear mechanism 120 is arranged at a position where it meshes with the rack 121.

The pinion 112 receives the driving force of the motor 129 via the gear set 128. Gear mechanism 1
In order to properly receive the gear pressure at 20, the pinion 124 is assembled so that the pinion 124 does not swing and the rack 121 can go straight without bending.

When the trigger 117 is pulled and the switch 131 is turned on and the motor 129 starts rotating, the pinion 12
4 and the rack 121 are in a state in which they can start rotation with each other.

Further, the pinion 124 rotates, and the toothless portion 1
At 27, the piston 114 rapidly advances due to the elastic force of the spring 115, compressing the air in the cylinder 112. The compressed air generated by this is ejected from the nozzle 113, and if the bullet 116 is loaded in the loading section 117, it will be ejected. The cylinder 112 is
After the above-described bullet firing process, the bullet is temporarily retracted by the engagement with the interlocking member 132 such as a cam provided in the gear assembly, and the pushing spring 118 loads only one bullet in the bullet loading path into the bullet loading section 117. .

In the gun having such a structure, as shown in FIG. 11, a plurality of rotating bodies 131 are arranged in a gap between the piston 114 (sliding body) and the gun body side cylinder 112,
The piston can be smoothly slid. Rotating body 13
No. 1 is arranged such that the rotating shaft is fixed inside the cylinder 112, and the outer peripheral surface of the rotating body 131 abuts on the outer peripheral surface of the piston 114. To make it smooth. In this embodiment, the rotating bodies 131 are arranged every 120 degrees.
A larger number can be arranged, and the number and arrangement position are not limited.

[0027]

Since the present invention is constructed as described above,
The following effects are achieved.

That is, as in claim 1, the gun body and the gun body
With a gun that has a slide cover slidably supported above
There is a slide guide on the upper part of the gun body.
Multiple guide rotating bodies on the left and right of the guide rail.
Since the slide covers are provided at the front and rear , the slide cover can be slid smoothly and rattling at the time of sliding can be prevented. Further, since it is rollingly supported by the guide rotating body, resistance is reduced, wear is reduced, durability can be improved, and generation of abnormal noise can be reduced. Further, even if some deformation occurs due to temperature change of the gun itself, the guide rotating body can absorb the deformation and prevent uneven wear and the like. Multiple transfers
The slide guide can be stably supported by the dynamic guide.
You can The piston can slide smoothly
It

According to a second aspect of the present invention, there is provided a gun having a gun body and a slide cover slidably supported on the gun body, wherein a guide rail of the slide cover is provided above the gun body, and the slide cover is provided. Since the guide rotating bodies are provided on the left and right sides and the guide rotating bodies are provided on the front and rear sides , the slide cover can be slid smoothly and rattling at the time of sliding can be prevented. Further, since it is rollingly supported by the guide rotating body, resistance is reduced, wear is reduced, durability can be improved, and generation of abnormal noise can be reduced. Further, even if some deformation occurs due to temperature change of the gun itself, the guide rotating body can absorb the deformation and prevent uneven wear and the like. Slide cover with multiple rolling guides
Can be stably supported. Circle piston sliding
Can be slippery.

According to a third aspect of the present invention , a piston cylinder is provided at the rear of the barrel.
A gun in which a piston device is arranged,
Place the rotating body between the Linda and the piston in the cylinder.
Since it was inserted slidably, it is suitable for guns using rack gears.
However, the rotating body may contact the outer peripheral surface of the piston and
To make the piston slide smoothly.
it can.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a normal state of a toy air gun of the present invention.

FIG. 2 is an exploded perspective view showing a state where a slide cover is removed from the gun body.

FIG. 3 is a side view of the gun sequentially showing sliding states of the slide cover.

FIG. 4 is a plan view of the gun body showing a guide rail portion and a view of the slide cover as seen from below.

FIG. 5 is a view of the slide cover according to the second embodiment as viewed from below.

FIG. 6 is a sectional view of a slide cover and a guide rail according to a second embodiment.

FIG. 7 is a perspective view of a guide rail according to a third embodiment.

FIG. 8 is a perspective view of a guide rail according to a fourth embodiment.

FIG. 9 is a perspective view of a guide rail according to a fifth embodiment.

FIG. 10 is a sectional view of a main part of a gun according to a sixth embodiment.

FIG. 11 is a sectional view of a cylinder and a piston according to a sixth embodiment.

[Explanation of symbols]

1 gun body 11 barrel 14 Slide cover 30 guide rails 30a guidance section 31 Guide roller 32 guide recess 33 Sliding guide member 34 axes

Claims (3)

(57) [Claims] 1. A gun body and a slidably supported on the gun body.
A gun having a slide cover formed on the gun body.
Install a slide cover guide rail on the
A gun characterized in that a plurality of guide rotating bodies are provided on the left and right sides of the ruler. 2. A gun having a gun main body and a slide cover slidably supported on the gun main body, wherein guide rails of the slide cover are provided on an upper portion of the gun main body, and guides are provided to the left and right inside the slide cover. A rotating body is provided , and the guide rotating body is
A gun characterized by being installed in front and behind . 3. A piston cylinder device is arranged at the rear of the barrel.
A gun that has been inserted between the piston and the cylinder.
A rolling element is placed so that the piston can slide inside the cylinder.
A gun characterized by having been inserted .