Hammer brake pin assembly and axial nail shooting device

Abstract

The utility model discloses a driving hammer brake pin assembly and an axial nail shooter, comprising a driving hammer and a brake pin assembly, the driving hammer is provided with a through hole for installing a brake pin, and the brake pin assembly comprises a brake pin and a spring; a limiting structure is arranged in the through hole, and when the spring recovers to the initial state from the compressed state, force applied to the brake pin by the spring drives the brake pin to move, so that the brake pin abuts against the limiting structure; the limiting structure is arranged in the through hole matched with the brake pin, and the structure of the brake pin is used for limiting the brake pin during resetting, so that the brake pin is prevented from directly colliding with the guide groove, the deformation of the guide groove is effectively prevented, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of nail shooters, in particular to a hammer brake pin assembly and an axial nail shooter. Background Art

[0002] Axial nail shooters in the prior art mostly use brake pins to trigger the firing action. For example, Chinese patent CN206527705U discloses a firing release device applied to an axial nail shooter, which fires through a positioning pin. After the firing is completed, the positioning pin will reset and directly hit the guide groove. After a period of use, the guide groove will be deformed, affecting the firing function. Utility Model Content

[0003] The utility model provides a hammer brake pin assembly and an axial nail shooter, which can at least solve one problem pointed out in the background technology.

[0004] A hammer brake pin assembly comprises a hammer and a brake pin assembly, wherein the hammer is provided with a through hole for installing the brake pin, and the brake pin assembly comprises a brake pin and a spring; a limiting structure is arranged in the through hole, and when the spring recovers from a compressed state to an initial state, the force applied by the spring to the brake pin drives the brake pin to move, so that the brake pin abuts against the limiting structure.

[0005] Preferably, the limiting structure is a limiting ring.

[0006] Preferably, the limiting structure and the hammer are an integrated structure.

[0007] Preferably, the brake pin comprises a thick portion, a middle portion and a thin portion, the diameters of the thick portion, the middle portion and the thin portion decrease successively, and the inner diameter of the limit ring is larger than the diameter of the middle portion and smaller than the diameter of the thick portion;

[0008] A step surface is provided between the thick portion and the middle portion, and under the action of the spring, the step surface can abut against the limiting ring.

[0009] Preferably, the thick portion has a boss portion on one side close to the spring, and the boss portion is located inside the spring.

[0010] Preferably, it further comprises a retaining spring for preventing the spring from falling out of the through hole, and a retaining groove cooperating with the retaining spring is provided in the through hole.

[0011] Preferably, the brake pin includes a thick part, a thin part and a rod part, the diameters of the thick part, the thin part and the rod part decrease successively, the inner diameter of the limiting ring is larger than the diameter of the rod part and smaller than the diameter of the thick part, and the end of the rod part away from the thick part passes through the limiting ring and is connected to a retaining spring.

[0012] An axial nail shooter comprises the above-mentioned hammer brake pin assembly.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model realizes the limitation of the brake pin when resetting by arranging a limiting structure in the through hole cooperating with the brake pin and the structure of the brake pin itself, thereby preventing the brake pin from directly hitting the guide groove, effectively preventing the guide groove from deforming, and extending the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the first embodiment of the utility model;

[0015] Figure 2 for Figure 1 A local enlarged view of point A;

[0016] Figure 3 It is a cross-sectional view of the second embodiment of the utility model;

[0017] Figure 4 for Figure 3 A partial enlarged view of point B;

[0018] Figure 5 This is a schematic structural diagram of the third embodiment of the present utility model.

[0019] Description of reference numerals:

[0020] 1-hammer, 2-brake pin, 3-through hole, 4-spring, 5-limiting structure, 6-hammer sleeve, 7-guide groove, 8-boss part, 9-circlip, 10-slot, 11-axial nail shooter, 12-guide slope, 13-housing, 21-thick part, 22-thin part, 23-middle part, 24-rod part. DETAILED DESCRIPTION

[0021] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0022] Embodiment 1

[0023] like Figure 1 and Figure 2 As shown, a hammer brake pin assembly provided by an embodiment of the utility model comprises a hammer 1 and a brake pin assembly, wherein a through hole 3 for installing a brake pin 2 is provided on the hammer 1, and the brake pin assembly comprises a brake pin 2 and a spring 4; a limiting structure 5 is provided in the through hole, and the limiting structure 5 and the hammer 1 are an integrated structure, and when the spring 4 is restored from a compressed state to an initial state, the force applied by the spring 4 to the brake pin 2 drives the brake pin 2 to move, so that the brake pin 2 abuts against the limiting structure 5, thereby preventing the brake pin 2 from directly abutting against a guide groove 7 on a hammer sleeve 6, and preventing the hammer sleeve 6 and the guide groove 7 from deforming;

[0024] A groove for the brake pin 2 to move is formed on the outer shell 13 located outside the hammer sleeve 6, and a guide slope 12 is formed at the end of the groove. During the firing and accumulating force, the brake pin 2 abuts against the guide slope 12, and the brake pin 2 retracts in the through hole 3, thereby achieving the firing of the firing pin.

[0025] The limiting structure 5 of this embodiment is a limiting ring;

[0026] Specifically, the brake pin 2 of this embodiment includes a thick portion 21, a middle portion 23 and a thin portion 22, the diameters of the thick portion 21, the middle portion 23 and the thin portion 22 decrease successively, the inner diameter of the stop ring is larger than the diameter of the middle portion 23 and smaller than the diameter of the thick portion 21; there is a step surface between the thick portion 21 and the middle portion 23, and under the action of the spring, the step surface can abut against the stop ring;

[0027] In addition, the thick portion 21 has a boss portion 8 on a side close to the spring 4 , and the boss portion 8 is located inside the spring 4 .

[0028] In addition, a retaining spring 9 is included to prevent the spring 4 from falling off from the through hole 3 , and a retaining groove 10 cooperating with the retaining spring 9 is provided in the through hole 3 .

[0029] Embodiment 2

[0030] like Figure 3 and Figure 4 As shown, a hammer brake pin assembly provided in this embodiment includes a hammer 1 and a brake pin assembly. A through hole 3 for installing a brake pin 2 is opened on the hammer 1, and the brake pin assembly includes a brake pin 2 and a spring 4. A limiting structure 5 is arranged in the through hole, and the limiting structure 5 and the hammer 1 are an integrated structure. When the spring 4 is restored from a compressed state to an initial state, the force applied by the spring 4 to the brake pin 2 drives the brake pin 2 to move, so that the brake pin 2 abuts against the limiting structure 5, thereby preventing the brake pin 2 from directly abutting against the guide groove 7 on the hammer sleeve 6, and preventing the hammer sleeve 6 and the guide groove 7 from deforming.

[0031] A groove for the brake pin 2 to move is formed on the outer shell 13 located outside the hammer sleeve 6, and a guide slope 12 is formed at the end of the groove. During the firing and accumulating force, the brake pin 2 abuts against the guide slope 12, and the brake pin 2 retracts in the through hole 3, thereby achieving the firing of the firing pin.

[0032] Different from the first embodiment, the brake pin 2 of this embodiment includes a thick portion 21, a thin portion 22 and a rod portion 24, and the diameters of the thick portion 21, the thin portion 22 and the rod portion 24 decrease successively. The inner diameter of the limiting ring is larger than the diameter of the rod portion 24 and smaller than the diameter of the thick portion 21. The end of the rod portion 24 away from the thick portion 21 passes through the limiting ring and is connected to a retaining spring 9. When the brake pin is reset, the retaining spring 9 abuts against the limiting ring, so that the brake pin 2 does not abut in the guide groove 7, thereby preventing the hammer sleeve 6 and the guide groove 7 from deformation.

[0033] Embodiment 3

[0034] like Figure 5 As shown, this embodiment provides an axial nail shooter 11, including the hammer brake pin assembly of the above-mentioned embodiment 1 or embodiment 2.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit and basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hammer brake pin assembly, comprising a hammer and a brake pin assembly, wherein the hammer is provided with a through hole for mounting the brake pin, characterized in that: The brake pin assembly includes a brake pin and a spring; a limiting structure is arranged in the through hole, and when the spring recovers from a compressed state to an initial state, the force applied by the spring on the brake pin drives the brake pin to move, so that the brake pin abuts against the limiting structure.

2. A hammer brake pin assembly according to claim 1, characterized in that: The limiting structure is a limiting ring.

3. A hammer brake pin assembly according to claim 1, characterized in that: The limiting structure and the hammer are an integrated structure.

4. A hammer brake pin assembly as claimed in claim 2, characterized in that: The brake pin comprises a thick portion, a middle portion and a thin portion, the diameters of the thick portion, the middle portion and the thin portion decrease in sequence, and the inner diameter of the limit ring is larger than the diameter of the middle portion and smaller than the diameter of the thick portion; A step surface is provided between the thick portion and the middle portion, and under the action of the spring, the step surface can abut against the limiting ring.

5. A hammer brake pin assembly according to claim 4, characterized in that: The thick portion has a boss portion on one side close to the spring, and the boss portion is located inside the spring.

6. A hammer brake pin assembly as claimed in claim 4, characterized in that: It also includes a retaining spring for preventing the spring from falling off from the through hole, and a retaining groove matched with the retaining spring is provided in the through hole.

7. A hammer brake pin assembly as claimed in claim 2, characterized in that: The brake pin includes a thick part, a thin part and a rod part, and the diameters of the thick part, the thin part and the rod part decrease successively. The inner diameter of the limiting ring is larger than the diameter of the rod part and smaller than the diameter of the thick part. The end of the rod part away from the thick part passes through the limiting ring and is connected with a retaining spring.

8. An axial nail gun, characterized in that: Comprising a hammer brake pin assembly as described in any one of claims 1-7.

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