WO2014153807A1

WO2014153807A1 - Secure self-locking mechanism in manual nail gun

Info

Publication number: WO2014153807A1
Application number: PCT/CN2013/075227
Authority: WO
Inventors: 张华定
Original assignee: 台州市钉霸电动工具有限公司
Priority date: 2013-03-25
Filing date: 2013-05-07
Publication date: 2014-10-02
Also published as: CN203210328U

Abstract

A secure self-locking mechanism in a manual nail gun, comprising a locking plate (5) and an ejector pin (6); the ejector pin (6) is slidably connected to the gun body (1) and disposed parallel to a firing pin (2); the lower end of the ejector pin (6) can extend out of the outlet of the gun bore (4); the outer end of the locking plate (5) laps over the inner end face of the ejector pin (6); the inner end of the locking plate (5) is in snapping engagement with a trigger (3) via a hook structure (7); a return spring I (8) is disposed between the locking plate (5) and the gun body (1), enabling the locking plate (5) to generate a tendency of forward rotation; a return spring IV (18) is disposed between the upper end of the ejector pin (6) and the gun body (1), moving the ejector pin (6) inward to allow the inner end face of the ejector pin (6) to press against the outer end of the locking plate (5), so that the locking plate (5) is reversely rotated; and the reverse rotation of the locking plate (5) allows the hook structure (7) to disengage. The secure self-locking mechanism is very safe and highly stable.

Description

Safety self-locking mechanism in manual nail gun

Technical field

The utility model belongs to the technical field of nailing equipment, and relates to a safety self-locking mechanism in a manual nail gun.

Background technique

In the modern decoration industry, manual nail guns are widely used. At present, the structure of the manual nail gun generally includes a gun body having a groove, a striker, a nail storage slot, a spring steel piece, a pressure plate and a return spring. The striker is disposed in the groove of the gun body, and the storage slot and the gun body The groove is connected, one end of the pressing plate acts on the striker, the other end passes through the gun body, one end of the spring steel piece acts on the striker, and the other end acts on the gun body, one end of the return spring acts on the pressure plate, and the other end acts On the gun body. The platen is pulled, and the platen drives the striker along the groove away from the staple groove. During the movement of the striker, the spring steel piece acting on the striker generates an elastic force; after the press plate is pulled to a certain extent, the press plate is separated from the striker, and under the action of the spring force of the spring steel piece, the striker will top the storage nail slot. The nails of the end are played out.

Such as patents (CN 201483458 U) A manual nail gun disclosed, comprising a gun body having a groove, a striker, a nail storage slot, a spring steel sheet and a press wrench, wherein the striker is disposed in a groove of the gun body, the storage The nail slot is in communication with the groove of the gun body, the end of the press wrench acts on the striker, the other end passes through the gun body, and the press wrench can drive the striker to move along the groove, the spring steel piece One end acts on the striker and the other end acts on the gun body. The gun body also has a control mechanism that can lock the striker when the striker is away from the staple slot. This kind of nail gun can make the operation more labor-saving, but this nail gun also has defects. It is because of the relatively labor-saving, the force of pulling the small wrench is relatively small, and once the small wrench is pulled, the firing pin is shot immediately to realize the nailing. There is a problem of low security.

technical problem

The utility model provides a safety self-locking mechanism in a manual nailing gun according to the above problems existing in the prior art, and the technical problem to be solved by the utility model is to improve the nailing gun by increasing the self-locking function of the wrench. safety.

Technical solution

The purpose of the utility model can be achieved by the following technical solutions:

A safety self-locking mechanism in a manual nail gun, the nail gun includes a gun body, a striker and a wrench, the gun body is provided with a barrel, and the striker is inserted into the barrel, the wrench The middle portion is hinged on the gun body, wherein the self-locking mechanism comprises a locking piece and a thimble, the thimble is slidably coupled to the gun body and disposed parallel to the striker, and the lower end of the thimble can extend to the barrel The outer end of the locking piece overlaps the inner end surface of the thimble, and the inner end of the locking piece is fastened by a hook structure and the wrench, the lock A return spring is provided between the piece and the gun body to enable the locking piece to rotate in a positive direction. By moving the ejector pin inwardly, the inner end surface of the thimble can be pressed against the outer end of the locking piece and the lock is applied. The sheet produces a reverse rotation and the above-described hook structure can be disengaged by rotating the locking tab in the opposite direction.

The working principle is as follows: the gun body also has a storage nail slot, the storage nail slot is connected with the barrel, and the nail is sequentially conveyed to the inside of the barrel through the elastic feeding mechanism for waiting for firing, and the upper part of the gun body is further provided with a pressing plate and a spring steel piece, and the spring The two ends of the steel sheet are respectively connected with the pressure plate and the upper portion of the striker. The spring steel sheet can be elastically bent by pressing the pressure plate downward, so that the elastic steel potential energy is accumulated. When the wrench is pulled, the elastic potential energy of the spring steel sheet acts on the striker. The upper portion causes the striker to strike the nail in the barrel outwardly along the barrel, thereby completing the firing action. When the locking piece and the wrench are fastened by the hook structure, the wrench cannot be pulled, and the locking pin is in a self-locking state, and the firing cannot be completed. At this time, the thimble slides outward due to the action of the repeating spring 4, and the outer end extends. Outside the exit of the gun, when the gun body is placed on the target plate, the exit of the gun is attached to the target plate, and the outer end of the pin is pressed inward by the target plate, so that the pin is contracted inward, and the inside of the pin The end face presses up the outer end of the locking piece upwards, and overcomes the elastic force of the return spring 1 and the return spring 4 to reverse the locking piece Rotating, so that the hook structure between the locking piece and the wrench is disengaged, thereby releasing the self-locking state of the wrench, so that the wrench can be pulled. The device realizes the self-locking function of the wrench by the structural cooperation of the locking piece and the thimble, and since the moving direction of the ejector pin and the striker is the same, when the sputum outlet is in the hanging state, the thimble does not touch the locking piece, the wrench is self-locking, only the gun When the exit of the cymbal is blocked by the target plate, the outer end of the thimble is pressed by the target plate to complete the triggering of the lock piece, thereby greatly improving the safety of the nail gun and preventing accidental injury.

In the above-described safety self-locking mechanism in a manual nail gun, as a solution, the hook structure includes a hook head disposed at an inner end of the wrench and a hook head disposed at an inner end of the lock piece. Second, the hook head 1 and the hook head 2 can be engaged. When the locking piece is triggered to rotate in the opposite direction by the thimble, the hook head 2 and the hook head are disengaged from each other, so that the two are disengaged from the buckle, thereby releasing the self-locking state of the wrench, and when the thimble stops applying force to the locking piece, the lock is locked. The piece is reset by the action of its own return spring, so that the hook head 2 and the hook head are re-fastened to complete the self-locking; the fastening by the two hook heads is convenient, simple in structure, safe and stable.

In the above-mentioned safety self-locking mechanism of a manual nail gun, a return spring 2 is provided between the wrench and the gun body to enable the wrench to rotate in the reverse direction, and the hook head and the hook head 2 are The outer end faces are all inclined faces. The restoring force of the return spring 2 is designed to be greater than the restoring force of the return spring. When the hook head is reset later than the hook head 2, the hook head is located on the back side of the hook head 2, and the fastening cannot be completed, but in the return spring Under the action of the second, the outer end surface of the hook head slides along the front surface of the hook head 2, and when it slides to the correct position, the two are then buckled, and after the return spring 2 and the inclined surface are set, it is not because of the two The reset time difference of the hook head affects the buckle reset of both.

In a safety self-locking mechanism in a manual nail gun as described above, in another aspect, the hook structure includes a buckle disposed at an inner end of the wrench and a hook disposed at an inner end of the locking piece. The hook can be fastened to the buckle. The buckle is more stable by the combination of the buckle and the hook.

In the above-mentioned safety self-locking mechanism of a manual nail gun, the thimble is inserted inside and outside the barrel, and the inner and outer walls of the barrel are provided with a guiding structure, and the thimble is slidably coupled to the guiding structure. on. The design of the thimble in the barrel can improve the appearance and prevent the outer surface of the gun from being messy. After the guiding structure is designed, the sliding direction of the thimble and the direction of the force are more precise.

In the above-mentioned safety self-locking mechanism in a manual nail gun, the guiding structure is a chute or a slide rail.

In the above-mentioned safety self-locking mechanism of a manual nail gun, a lock pin is arranged between the wrench and the striker, the inner side of the striker has a blocking surface, and the inner end of the lock pin is The wrench is connected, and the outer end of the lock pin can be abutted against the blocking surface by rotating the wrench in a forward direction, and the lock pin and the gun body are arranged to move the lock pin outward The trend of the return spring is three. The return spring 3 causes the outer end of the lock pin to abut against the striker. When the striker moves and resets, the outer end of the lock pin can slide to the blocking surface. When the wrench pulls the lock pin inward, the outer end of the lock pin is disengaged. Block the surface, causing the striker to fire.

In the above-described safety self-locking mechanism of a manual nail gun, the lower thickness of the striker is smaller than the upper thickness thereof, and the boundary between the two forms the above-mentioned blocking surface. The generation of such a blocking surface is relatively simple in structure.

In the above-mentioned safety self-locking mechanism of a manual nail gun, a guide sleeve is fixed on the gun body, and the lock needle is inserted into the guide sleeve. The guide sleeve plays a guiding role in the movement of the lock needle, and improves the movement precision of the lock needle.

In the above-described safety self-locking mechanism in a manual nail gun, the upper end portion of the thimble has a convex portion that is convex toward both sides. The ejector pin is provided with a protruding portion to increase the contact area with the outer end portion of the locking piece, thereby improving the stability of the force of the two and preventing the detachment.

In the above-described safety self-locking mechanism in a manual nail gun, the outer end portion of the locking piece has a notch, and the notch can pass through the lower portion of the striker. The recess is designed such that the action of the locking tab and the action of the striker do not interfere with each other.

Beneficial effect

Compared with the prior art, the advantages of the utility model are as follows:

1 The device realizes the self-locking function of the wrench through the structural cooperation of the locking piece and the thimble, and since the moving direction of the ejector pin and the striker is the same, when the sputum outlet is in the hanging state, the thimble does not touch the locking piece, and the wrench is self-locking only. When the exit of the gun is blocked by the target plate, the outer end of the thimble is pressed by the target plate to complete the triggering of the lock piece, thereby greatly improving the safety of the nail gun and preventing accidental injury.

2. The utility model realizes fastening by means of two hook heads, is convenient and simple in structure, and is safe and stable.

3 After the reset spring 2 and the inclined surface of the utility model are installed, the resetting of the two hooks is not affected by the reset time difference between the two hook heads.

DRAWINGS

Figure 1 is a schematic view showing the overall structure of the safety self-locking mechanism.

Figure 2 is a schematic view of the explosion of the safety self-locking mechanism.

In the figure, 1, the gun body; 2, the striker; 21, the blocking surface; 3, the wrench; 4, the gun; 5, the locking piece; 6, the thimble; 7, the hook structure; 71, hook head one; 72, hook head two; 8, return spring one; 9, return spring two; 10, lock needle; 11, return spring three; 12, guide sleeve; 13, protruding portion; ; 15, pressure plate; 16, spring steel sheet; 17, storage nail groove; 18, return spring four

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the invention

The following is a specific embodiment of the present invention and further describes the technical solution of the present invention with reference to the accompanying drawings, but the present invention is not limited to the embodiments.

As shown in FIG. 1, the manual nail gun includes a gun body 1, a striker 2 and a wrench 3. The gun body 1 is provided with a barrel 4, the striker 2 is inserted into the barrel 4, and the middle portion of the wrench 3 is hinged to the gun body 1. The gun body 1 further has a storage nail groove 17, and the nail storage groove 17 communicates with the barrel 4, and the nail is sequentially conveyed to the barrel 4 through the elastic feeding mechanism for waiting for firing, and the upper part of the gun body 1 is further provided with a pressing plate 15 and a spring steel. The two ends of the spring steel piece 16 are respectively connected with the upper part of the pressure plate 15 and the striker 2, and the spring steel piece 16 can be elastically bent by pressing the pressure plate 15 downward, so that the elastic steel potential is accumulated, and when the wrench 3 is pulled The elastic potential of the spring steel piece 16 acts on the upper portion of the striker 2 so that the striker 2 strikes the nail in the barrel 4 outwardly along the barrel 4, thereby completing the firing action. A lock pin 10 is disposed between the wrench 3 and the striker 2. The inner side of the striker 2 has a blocking surface 21, and the inner end of the lock pin 10 is connected with the wrench 3. The outer end of the lock pin 10 can be rotated by rotating the wrench 3 forward. Abutting against the blocking surface 21, a return spring 31 is provided between the lock pin 10 and the gun body 1 to cause the lock pin 10 to move outward. The return spring 3 11 causes the outer end of the lock pin 10 to abut against the striker 2, and when the striker 2 is moved and reset, the outer end of the lock pin 10 can slide onto the blocking surface 21, and when the wrench 3 pulls the lock pin 10 inwardly At this time, the outer end of the lock pin 10 is disengaged from the blocking surface 21, so that the striker 2 is fired. The thickness of the lower portion of the striker 2 is smaller than the thickness of the upper portion thereof, and the boundary between the two forms the above-described blocking surface 21. The generation of such a blocking surface 21 is relatively simple in structure. A guide sleeve 12 is fixed to the gun body 1, and the lock pin 10 is inserted into the guide sleeve 12. The guide sleeve 12 serves as a guide for the movement of the lock needle 10, and improves the movement accuracy of the lock needle 10.

As shown in FIG. 1 and FIG. 2, the self-locking mechanism includes a locking piece 5 and a ejector pin 6. The thimble 6 is slidably coupled to the gun body 1 and disposed parallel to the striker 2. The lower end of the ejector pin 6 can extend beyond the outlet of the barrel 4. The outer end of the locking piece 5 is overlapped on the inner end surface of the thimble 6. The inner end of the locking piece 5 is fastened by a hook structure 7 and the wrench 3. The lock piece 5 and the gun body 1 are provided with the lock. The sheet 5 generates a return spring 8 of a forward rotation tendency. By moving the ejector pin 6 inwardly, the inner end surface of the thimble 6 can be pressed against the outer end portion of the locking piece 5 and the locking piece 5 can be reversely rotated and passed. Rotating the locking piece 5 in the reverse direction enables the above-described hook structure 7 to be disengaged.

Specifically, in the embodiment, as a solution, the hook structure 7 includes a hook head 71 disposed at an inner end of the wrench 3 and a hook head 72 disposed at an inner end of the lock piece 5, and the hook head 71 The hook heads 72 and 72 can be fastened together; the springs 9 are provided between the wrench 3 and the gun body 1 to enable the wrench 3 to rotate in the opposite direction, and the outer end faces of the hook head 71 and the hook head 72 are inclined surfaces. . When the locking piece 5 is triggered to rotate in the reverse direction by the ejector pin 6, the hook head 72 and the hook head 71 are disengaged from each other, so that the two are disengaged, thereby releasing the self-locking state of the wrench 3, when the ejector pin 6 stops the locking piece 5 When the force is applied, the locking piece 5 is reset by the action of its own return spring 8, so that the hook head 72 and the hook head 71 are re-fastened to complete the self-locking; the fastening is achieved by the two hooks. Convenient and simple structure, safe and stable. The restoring force of the return spring 2 is designed to be greater than the restoring force of the return spring 8. When the hook head 71 is reset later than the hook head 72, the hook head 71 is located on the back of the hook head 72, and the buckle cannot be completed. Connected, but under the action of the return spring 2, the outer end surface of the hook head 71 slides along the front surface of the hook head 72, and when it slides to the correct position, the two are then buckled, and the return spring is set. After the inclined surface, the reset of the two hooks will not be affected by the difference in reset time between the two hooks. Alternatively, the hook structure 7 includes a buckle disposed at an inner end of the wrench 3 and a hook disposed at an inner end of the locking piece 5, the hook being engageable with the buckle. The buckle is more stable by the combination of the buckle and the hook.

In this embodiment, the ejector pin 6 is inserted inside and outside the barrel 4, and the inner and outer walls of the barrel 4 are provided with a guiding structure, and the thimble 6 is slidably coupled to the guiding structure. The design of the ejector pin 6 in the barrel 4 can improve the appearance and prevent the outer surface of the gun body 1 from being messy. After the guiding structure is designed, the sliding direction and the force direction of the thimble 6 are more precise. In this embodiment, the guiding structure is a chute or a slide rail or the like. The upper end portion of the thimble 6 has a projection 13 that is convex toward both sides. The ejector pin 6 is provided with the protruding portion 13 to increase the contact area with the outer end portion of the locking piece 5, thereby improving the stability of the force of both and preventing detachment. The outer end of the locking piece 5 has a recess 14 through which the lower portion of the striker 2 can pass. The notch 14 is designed such that the action of the locking piece 5 and the action of the striker 2 do not interfere with each other.

The working principle is as follows: when the locking piece 5 and the wrench 3 are fastened by the hook structure 7, the wrench 3 cannot be pulled, and it is in a self-locking state, and the firing cannot be completed. At this time, the ejector pin 6 is self-repetitively spring 4 The action slides outwardly, and the outer end extends outside the outlet of the barrel 4. When the gun body 1 is placed on the target plate, the outlet of the barrel 4 is attached to the target plate, and the outer end of the thimble 6 is the target plate. Pressing inwardly causes the thimble 6 to contract inwardly, and the inner end surface of the thimble 6 presses upwardly against the outer end of the locking piece 5, overcoming the return spring 8 and the return spring 4 The elastic force of the 18 causes the locking piece 5 to rotate in the reverse direction, so that the hook structure 7 between the locking piece 5 and the wrench 3 is disengaged, thereby releasing the self-locking state of the wrench 3, so that the wrench 3 can be pulled. The device realizes the self-locking function of the wrench 3 by the structural cooperation of the locking piece 5 and the ejector pin 6, and since the moving direction of the ejector pin 6 and the striker 2 is uniform, the thimble 6 does not touch the locking piece 5 when the outlet of the rifle 4 is in a floating state. The wrench 3 is always self-locking. When only the outlet of the rifle 4 is blocked by the target plate, the outer end of the thimble 6 is pressed by the target plate to complete the triggering of the locking piece 5, thereby greatly improving the nailing gun. Use safety, no accidental injury.

The specific embodiments described herein are merely illustrative of the spirit of the invention. A person skilled in the art can make various modifications or additions to the specific embodiments described or replace them in a similar manner, without departing from the spirit of the invention or beyond the appended claims. The range defined.

Although this article is used more often 1 , gun body; 2, striker; 21, blocking surface; 3, wrench; 4, gun 膛; 5, locking piece; 6, thimble; 7, hook structure; 71, hook head one; 72, hook head two; 8, return spring one; 9, return spring two; 10, lock needle; 11, return spring three; 12, guide sleeve; 13, protruding portion; ; 15, pressure plate; 16, spring steel sheet; 17, storage nail slot 18, reset spring four Terms such as, but do not preclude the possibility of using other terms. These terms are only used to more easily describe and explain the nature of the present invention; any of the additional limitations are to be construed as being inconsistent with the spirit of the present invention.

Industrial applicability

Sequence table free content

Claims

1 A safety self-locking mechanism in a manual nail gun, the nail gun includes a gun body (1), a striker (2) and a wrench (3), and the gun body (1) is provided with a gun (4) The striker (2) is inserted into the barrel (4), and the middle portion of the wrench (3) is hinged to the gun body (1), characterized in that the self-locking mechanism comprises a locking piece (5) and a thimble (6), the thimble (6) is slidably coupled to the gun body (1) and disposed in parallel with the striker (2), the lower end of the thimble (6) being extendable to the barrel (4) Outside the outlet, the outer end of the locking piece (5) overlaps the inner end surface of the thimble (6), and the inner end of the locking piece (5) passes through a hook structure (7) and The wrench (3) is fastened, and a return spring (8) is provided between the locking piece (5) and the gun body (1) to cause the locking piece (5) to rotate in a positive direction. Moving the thimble (6) inwardly enables the inner end surface of the thimble (6) to press against the outer end of the locking piece (5) and cause the locking piece (5) to produce a reverse rotation and rotate in the opposite direction The lock piece 5) capable of so that the hook structure (7) from the fastener.

2. The safety self-locking mechanism of a manual nail gun according to claim 1, wherein The hook structure (7) includes a hook head (71) disposed at an inner end of the wrench (3) and a hook head (72) disposed at an inner end of the locking piece (5), the hook head One (71) and the hook head two (72) can be snapped together.

3. A safety self-locking mechanism in a manual nail gun according to claim 2, wherein Between the wrench (3) and the gun body (1), there is a return spring 2 (9) capable of causing the wrench (3) to rotate in the reverse direction, the hook head (71) and the hook head 2 (72). The outer end faces are all inclined faces.

4. The safety self-locking mechanism of a manual nail gun according to claim 1, wherein The hook structure (7) includes a buckle disposed at an inner end of the wrench (3) and a hook disposed at an inner end of the locking piece (5), the hook being capable of being engaged with the buckle Fastened.

5. A safety self-locking mechanism in a manual nail gun according to claim 1 or 2 or 3 or 4, wherein The thimble (6) is inserted inside and outside the barrel (4), and the inner and outer walls of the barrel (4) are provided with a guiding structure, and the thimble (6) is slidably coupled to the guiding structure.

6. The safety self-locking mechanism of a manual nail gun according to claim 5, wherein The guiding structure is a chute or a sliding rail.

7. A safety self-locking mechanism in a manual nail gun according to claim 1 or 2 or 3 or 4, wherein A lock pin (10) is disposed between the wrench (3) and the striker (2), and the inner side of the striker (2) has a blocking surface (21), and the inner end of the lock pin (10) Connected to the wrench (3), the outer end of the lock pin (10) can be abutted against the blocking surface (21) by rotating the wrench (3) in the forward direction, the lock pin (10) Between the gun body (1) is provided with a return spring three (11) capable of causing the lock pin (10) to move outward.

8. The safety self-locking mechanism of a manual nail gun according to claim 7, wherein The thickness of the lower portion of the striker (2) is smaller than the thickness of the upper portion thereof, and the junction between the two forms the above-mentioned blocking surface (21).

9. The safety self-locking mechanism of a manual nail gun according to claim 7, wherein A guide sleeve (12) is fixed on the gun body (1), and the lock pin (10) is inserted into the guide sleeve (12).

10. A safety self-locking mechanism in a manual nail gun according to claim 1 or 2 or 3 or 4, wherein The upper end portion of the thimble (6) has a protruding portion (13) protruding to both sides; the outer end portion of the locking piece (5) has a notch (14), the notch (14) ) can pass through the lower portion of the striker (2).