Gearbox damping structure of striking tool

Abstract

The utility model discloses a gearbox damping structure of a striking tool, which relates to the technical field of striking tools and comprises a gearbox, the gearbox comprises a gearbox shell with an open end and a closed end, and a plurality of gear transmission groups in meshing transmission are arranged in the gearbox shell. The gear box further comprises a gear box cover used for blocking the open end of the gear box shell, a damping assembly is arranged on the gear box cover, and the damping assembly is arranged on the side, facing the gear transmission set, of the gear box cover. Due to the arrangement of the damping assembly, after the gear box cover blocks the open end of the gear box shell, the damping assembly on the gear box cover can generate an axial flexible abutting effect on the gear transmission sets, and then gaps between a plurality of gears in the gear transmission set at the lowest position can be filled under the flexible abutting effect; when the striking tool is used subsequently, vibration and noise cannot be generated due to collision between the adjacent gears, and then the damping and noise reduction effects are achieved when the striking tool works.

Description

Technical Field

[0001] The utility model relates to the technical field of striking tools, and particularly relates to a shock-absorbing structure for a gearbox of a striking tool. Background Technique

[0002] A nail gun is mainly used for interior decoration, concrete, wooden strip or iron plate nailing, for fixing various bamboo and wooden products and other soft or hard thin sheet materials on brick-concrete walls and concrete components, and for connecting and fixing low-density metal or polymer material components. A pneumatic nail gun is mainly composed of a gun body, a gun nozzle and a nail box. Among them, the gun nozzle is mainly composed of a gun barrel and a gun barrel connecting part, and the nail box part is mainly composed of accessories such as a positioning block, a fixing block, a movable nail clip, etc. The nail is sent into the gun nozzle through a compression spring or a tension spring, and the nail is ejected through a firing pin.

[0003] All existing pneumatic nail guns of the air spring type on the market need to use a gearbox to convert the high rotational speed of the output shaft of the driving motor into a large-torque force to compress air for nailing. When the driving motor works, it will also bring very large vibrations to the gearbox due to too high a rotational speed. This is because there are gaps between adjacent gears inside the gearbox. During the process of the driving motor output shaft rotating and driving the gears to rotate, these gaps will cause the gears inside the gearbox to jump up and down, and then the jumping gears will collide with adjacent gears to generate vibrations and noises, and both the vibrations and noises are very large. The generation of vibrations and noises will seriously affect the user's mood and hearing.

[0004] After retrieval, a patent document (the authorized announcement number is CN220783819U) discloses a pneumatic nail gun. The pneumatic nail gun body includes a pneumatic nail gun main body, a nail outlet gun nozzle main body and a wrench. The nail outlet gun nozzle main body is connected to the pneumatic nail gun main body. The nail outlet gun nozzle main body includes a gun nozzle body. The gun nozzle body further includes a circular ring-shaped and surrounding support platform. The end of the pneumatic nail gun main body is provided with an outlet part. At least two spaced-apart buckles protrude from the outer peripheral side of the outlet part. At least two spaced-apart limiting parts are formed by the support platform extending towards the direction close to the pneumatic nail gun main body. A clamping groove is formed by the side of the limiting part close to the outlet part being recessed inwards. A chamfer structure is formed at one end of the limiting part close to the pneumatic nail gun main body. The buckles and the clamping grooves are opposite to each other, and the chamfer structure is clamped into the clamping groove.

[0005] Through the setting of the pneumatic nail gun body including the pneumatic nail gun main body and the nail outlet gun nozzle main body, the above pneumatic nail gun can conveniently fix an object. Through the connection mode between the gun nozzle body and the outlet part, it can conveniently protect the nail outlet gun nozzle main body. However, the problem of vibrations and noises generated during the use of the nail gun is not solved.

[0006] Therefore, we propose a shock-absorbing structure for a gearbox of a striking tool to solve the above problems. Content of the Utility Model

[0007] (I) Technical Problem to be Solved

[0008] In the prior art, there are gaps between adjacent gears inside the gearbox. During the rotation of the output shaft of the driving motor driving the gears to rotate, these gaps will cause the gears inside the gearbox to bounce up and down. Furthermore, the bouncing gears will collide with adjacent gears, generating vibrations and noises, and both the vibrations and noises are very large. The generation of vibrations and noises will seriously affect the mood and hearing of users.

[0009] (II) Technical Solution

[0010] To solve the above problems, the present utility model provides the following technical solution:

[0011] A shock-absorbing structure for the gearbox of a striking tool, including a gearbox provided on the striking tool. The gearbox includes a gearbox housing having an open end and a closed end, and a plurality of gear transmission groups engaged in transmission are arranged inside the gearbox housing. It further includes a gearbox cover for blocking the open end of the gearbox housing. A shock-absorbing component is provided on the gearbox cover, and the shock-absorbing component is arranged on the side of the gearbox cover facing the gear transmission group, so that the shock-absorbing component exerts an axial flexible pressing effect on the gear transmission group.

[0012] As a further solution of the present utility model: The shock-absorbing component includes an annular flange provided on the side of the gearbox cover, and a plurality of sinking grooves are formed on the annular flange. A shock-absorbing rubber pad is provided on the sinking groove, and when the gearbox cover is blocked on the open end of the gearbox housing, the shock-absorbing rubber pad abuts against the gear transmission group.

[0013] As a further solution of the present utility model: The annular flange is coaxially arranged with the gearbox cover.

[0014] As a further solution of the present utility model: Both the sinking grooves and the shock-absorbing rubber pads are provided in multiple numbers. The multiple sinking grooves are respectively arranged in one-to-one correspondence with the multiple shock-absorbing rubber pads, and the multiple sinking grooves are circumferentially arranged in an array on the annular flange.

[0015] As a further solution of the present utility model: Multiple groups of shock-absorbing rubber rings are arranged inside the gearbox housing. The multiple groups of shock-absorbing rubber rings are respectively arranged in one-to-one correspondence with the multiple gear transmission groups, and the multiple groups of shock-absorbing rubber rings are respectively sleeved outside the corresponding gear transmission groups.

[0016] As a further solution of the present utility model: Both the sinking grooves and the shock-absorbing rubber rings are provided in a fan-shaped structure.

[0017] As a further solution of the present utility model: The gearbox cover and the open end of the gearbox housing are connected by fastening bolts.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. Through the setting of the shock-absorbing component, after the gearbox cover seals the opening end of the gearbox housing, the shock-absorbing component on the gearbox cover can exert an axial flexible pressing effect on the gear transmission group. Then, under this flexible pressing effect, the gaps between multiple gears in the lowermost gear transmission group will be filled. When the subsequent striking tool is used, adjacent gears will not generate vibration and noise due to collision, thus realizing the shock-absorbing and noise-reducing effects during the operation of the striking tool.

[0021] 2. Through the setting of the shock-absorbing rubber rings, multiple groups of shock-absorbing rubber rings are provided, and the multiple groups of shock-absorbing rubber rings are respectively arranged in one-to-one correspondence with multiple gear transmission groups, and the multiple groups of shock-absorbing rubber rings are respectively sleeved outside the corresponding gear transmission groups. When the subsequent striking tool is used, the self-offset of the gear transmission group will be reduced under the limiting effect of the shock-absorbing rubber rings, further realizing the shock-absorbing and noise-reducing effects during the operation of the striking tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further describes the present utility model with reference to the accompanying drawings.

[0023] Figure 1 is a schematic cross-sectional structure diagram of the present utility model assembled to a striking tool;

[0024] Figure 2 is an exploded structure diagram of the present utility model;

[0025] Figure 3 is a schematic cross-sectional structure diagram of the present utility model.

[0026] In the figure: 1. Gearbox housing; 2. Gear transmission group; 3. Gearbox cover; 4. Annular flange; 5. Sinking groove; 6. Shock-absorbing rubber pad; 7. Shock-absorbing rubber ring; 8. Fastening bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] As Figures 1-3As shown, a gearbox damping structure of a striking tool includes a gearbox arranged on the striking tool, the gearbox includes a gearbox housing 1 with an open end and a closed end, and a plurality of meshing gear transmission groups 2 are arranged inside the gearbox housing 1, wherein the number of the gear transmission groups 2 is determined according to the actual selected gearbox, and the utility model does not limit the number of the gear transmission groups 2. Figure 2 and Figure 3 The numbers shown are also shown in three groups for illustration only.

[0029] like Figure 2 As shown, the utility model further includes a gear box cover 3 for sealing the open end of the gear box housing 1. The gear box cover 3 is connected to the open end of the gear box housing 1 by a fastener, for example, the fastener can be set as a fastening bolt 8. In order to solve the vibration and noise problems generated by the gearbox during operation, a shock absorbing component is provided on the gear box cover 3, and the shock absorbing component is provided on the side of the gear box cover 3 facing the lowest gear transmission group 2, so that the shock absorbing component produces an axial flexible pressing effect on the gear transmission group 2. Then, when the gearbox is Figure 2 After the gearbox in the shown state is assembled, the shock absorbing assembly on the gear box cover 3 will generate an axial resistance force on the gear transmission group 2 at the bottom, that is, the shock absorbing assembly will fill the gaps between the multiple gears in the gear transmission group 2. During subsequent work, the gears in the gear transmission group 2 will be limited and blocked, and will not collide with adjacent gears to generate vibration and noise, thereby achieving shock absorption and noise reduction effects when the striking tool is working.

[0030] Regarding the setting of the above-mentioned shock-absorbing assembly, the shock-absorbing assembly includes an annular flange 4 arranged on the side of the gear box cover 3, the annular flange 4 is coaxially arranged with the gear box cover 3, and a plurality of sinking grooves 5 are opened on the annular flange 4, and a shock-absorbing rubber pad 6 is arranged on the sinking groove 5, and when the gear box cover 3 is sealed on the open end of the gear box housing 1, the shock-absorbing rubber pad 6 conflicts with the gear transmission group 2. It should be noted that the shock-absorbing rubber pad 6 can be made of wear-resistant material, thereby extending the duration of shock absorption and noise reduction during the use of the striking tool.

[0031] For example Figure 2 As shown, since there are multiple gears in the gear transmission group 2 at the bottom, the sinking groove 5 and the shock-absorbing rubber pad 6 can be set to multiple, and the multiple sinking grooves 5 are respectively set in one-to-one correspondence with the multiple shock-absorbing rubber pads 6, and the multiple sinking grooves 5 are circumferentially arranged in an array on the annular flange 4. Preferably, the sinking groove 5 and the shock-absorbing rubber ring 7 are both set to a fan-shaped structure.

[0032] like Figure 3As shown in the figure, further, in order to improve the shock absorption and noise reduction effects, multiple shock-absorbing rubber rings 7 can be provided on the inner side of the gearbox housing 1. The multiple shock-absorbing rubber rings 7 are respectively arranged in one-to-one correspondence with multiple gear transmission groups 2, and the multiple shock-absorbing rubber rings 7 are respectively sleeved outside the corresponding gear transmission groups 2. It should be noted that the shock-absorbing rubber ring 7 can also be made of wear-resistant materials, thereby extending the duration of shock absorption and noise reduction during the use of the striking tool.

[0033] The above has described a detailed description of an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A gearbox shock absorbing structure for a striking tool, characterized in that: The invention comprises a gearbox arranged on a striking tool, the gearbox comprising a gearbox housing (1) having an open end and a closed end, a plurality of meshing gear transmission groups (2) being arranged inside the gearbox housing (1), and a gearbox cover (3) for sealing the open end of the gearbox housing (1), a shock absorbing component being arranged on the gearbox cover (3), and the shock absorbing component being arranged on a side of the gearbox cover (3) facing the gear transmission group (2), so that the shock absorbing component generates an axial flexible pressing effect on the gear transmission group (2); The shock absorbing assembly comprises an annular flange (4) arranged on the side of the gear box cover (3), and a plurality of sunken grooves (5) are provided on the annular flange (4), and a shock absorbing rubber pad (6) is provided on the sunken groove (5), and when the gear box cover (3) is sealed on the open end of the gear box housing (1), the shock absorbing rubber pad (6) is in conflict with the gear transmission group (2).

2. According to the gearbox damping structure of a striking tool as described in claim 1, it is characterized in that: The annular flange (4) is coaxially arranged with the gear box cover (3).

3. According to the gearbox damping structure of a striking tool as described in claim 1, it is characterized in that: The sinking groove (5) and the shock-absorbing rubber pad (6) are both provided in plurality, the plurality of sinking grooves (5) are respectively provided in one-to-one correspondence with the plurality of shock-absorbing rubber pads (6), and the plurality of sinking grooves (5) are arranged in a circumferential array on the annular flange (4).

4. The gearbox damping structure of a striking tool according to claim 1, characterized in that: A plurality of groups of shock-absorbing rubber rings (7) are arranged on the inner side of the gear box housing (1), the plurality of groups of shock-absorbing rubber rings (7) are arranged in one-to-one correspondence with the plurality of gear transmission groups (2), and the plurality of groups of shock-absorbing rubber rings (7) are respectively sleeved on the outside of the corresponding gear transmission groups (2).

5. The gearbox damping structure of a striking tool according to claim 3, characterized in that: The sinking groove (5) and the shock-absorbing rubber ring (7) are both configured as fan-shaped structures.

6. The gearbox damping structure of a striking tool according to claim 1, characterized in that: The gear box cover (3) is connected to the open end of the gear box housing (1) via fastening bolts (8).

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