A detachable electric wrench

Abstract

This utility model discloses a detachable electric wrench, comprising a front end shell, a connecting gear assembly, a drive module, and an open-end gear ring. The front end shell includes a connected shell body and a mounting frame. The mounting frame is rotatably equipped with a drive gear. The connecting gear assembly includes an input gear, at least two output gears, and a transmission gear assembly. The output gears are rotatably mounted on the shell body, and the transmission gear assembly is mounted on the shell body. The input gear is rotatably mounted on the mounting frame and meshes with the drive gear. The transmission gear assembly connects the output gears and the input gear. The drive module is detachably mounted on the mounting frame and connected to the drive gear. The open-end gear ring is mounted on the shell body, and the teeth on the outer periphery of the open-end gear ring mesh with at least one output gear. The inner wall of the open-end gear ring is provided with a clamping assembly. With the above structure, the input gear and the drive gear can be installed and meshed through only one mounting frame. Therefore, the mounting frame effectively solves the problem of error accumulation caused by the assembly of multiple components in traditional systems.

Description

Technical Field

[0001] This utility model relates to the field of electric wrench technology, and in particular to a detachable electric wrench. Background Technology

[0002] An electric wrench is a high-efficiency power tool used for quickly tightening or loosening workpieces (such as rebar sleeves, turnbuckles, etc.). In existing technology, some electric wrenches include a front housing, a drive module, an open-tooth ring, and a connecting gear assembly all connected to the front housing. The inner wall of the open-tooth ring has a clamping component for holding the workpiece. The output gear of the connecting gear assembly meshes with the teeth on the outer periphery of the open-tooth ring, and the input gear of the connecting gear assembly meshes with the drive gear of the drive module. To reduce the space occupied by the electric wrench during transportation and to reduce transportation costs, the inventors have made the drive module detachably connected to the front housing. However, further research revealed that the above structure requires a large number of parts to achieve the installation and meshing of the input and drive gears, which easily leads to problems such as the accumulation of errors from multiple parts, making it difficult to ensure the meshing accuracy of the input and drive gears. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a detachable electric wrench.

[0004] A detachable electric wrench according to an embodiment of the present invention includes a front end shell, a connecting gear assembly, a drive module, and an open gear ring. The front end shell includes a connected shell body and a housing frame. The housing frame is rotatably equipped with a drive gear. The connecting gear assembly includes an input gear, at least two output gears, and a transmission gear assembly. The output gears are rotatably mounted on the shell body, and the transmission gear assembly is mounted on the shell body. The input gear is rotatably mounted on the housing frame and meshes with the drive gear. The transmission gear assembly connects the output gears and the input gears. The drive gear assembly... The module is detachably mounted on the container frame. The drive module is connected to the drive gear. The open toothed ring is mounted on the housing body. The teeth on the outer periphery of the open toothed ring mesh with at least one of the output gears. The inner wall of the open toothed ring is provided with a clamping assembly. The drive module can drive the drive gear to rotate, so that the drive gear drives the open toothed ring to rotate through the input gear, the transmission gear set and the output gear, thereby causing the workpiece inserted into the inner hole of the open toothed ring and clamped by the clamping assembly to rotate.

[0005] A detachable electric wrench according to an embodiment of the present invention has at least the following beneficial effects:

[0006] With the above structure, on the one hand, the drive module is detachably connected to the container, so it can be disassembled during transport packaging to reduce the space occupied by the overall electric wrench, thereby reducing the transportation cost of the electric wrench; on the other hand, the input gear is rotatably mounted on the container and meshes with the drive gear, which is also rotatably mounted on the container. In other words, the input gear and the drive gear can be installed and meshed through only one container. The integrated or modular pre-assembled container can make the positioning between the input gear and the drive gear more accurate and can effectively solve the problem of error accumulation caused by the assembly of multiple parts in the traditional way, so as to ensure the meshing accuracy of the input gear and the drive gear.

[0007] According to some embodiments of the present invention, the container frame is provided with a first cylindrical section and a second cylindrical section, the input gear and the drive gear are respectively rotatably disposed in the first cylindrical section and the second cylindrical section, the second cylindrical section is detachably connected to the drive module, and the first cylindrical section is connected to the shell body.

[0008] According to some embodiments of the present invention, the container rack includes a detachably connected bottom support and a mounting cover. The bottom support is provided with a connected first cylindrical portion and a supporting portion, and the supporting portion and the mounting cover together form the second cylindrical portion.

[0009] According to some embodiments of the present invention, a slot is provided between the support portion and the mounting cover, and the shell body is provided with an insertion block, which is inserted into the slot.

[0010] According to some embodiments of the present invention, the drive gear is provided with a first connecting shaft located in the inner cavity of the second cylindrical part, the drive module is provided with a connecting sleeve and a drive sleeve located in the connecting sleeve, the drive module is sleeved on the second cylindrical part through the connecting sleeve, and the drive sleeve is sleeved on the first connecting shaft, wherein the drive module can drive the drive sleeve to rotate, so that the drive sleeve drives the drive gear to rotate through the first connecting shaft.

[0011] According to some embodiments of the present invention, the second cylindrical portion is provided with a first hole, the connecting sleeve is provided with a second hole, and fasteners are inserted through the second hole and the first hole.

[0012] According to some embodiments of this utility model, the output gear is configured as two, the transmission gear set includes a first gear and two second gears, the first gear and the second gear are rotatably disposed on the housing body, the two output gears mesh with the two second gears in a one-to-one correspondence, the two second gears mesh with the first gear, the first gear is connected to the input gear, wherein the rotating input gear can drive the first gear to rotate.

[0013] According to some embodiments of the present invention, the rotation axis of the open gear ring, the rotation axis of the output gear, the rotation axis of the second gear, and the rotation axis of the first gear are arranged sequentially from front to back.

[0014] According to some embodiments of the present invention, the horizontal line connecting the rotation axis of the first gear and the rotation axis of one of the output gears is L1, and the horizontal line connecting the rotation axis of the first gear and the rotation axis of the other output gear is L2, wherein the included angle between L1 and L2 is β, and 110°≤β≤130°. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a structural diagram of an embodiment of the detachable electric wrench of this utility model;

[0017] Figure 2 for Figure 1 A partial exploded view of the electric wrench shown;

[0018] Figure 3 for Figure 2 A cross-sectional view of the container rack shown;

[0019] Figure 4 for Figure 2 A partial exploded view of the container rack shown;

[0020] Figure 5 for Figure 1 The diagram shows the structure of the electric wrench after some parts have been removed.

[0021] Figure 6 for Figure 2 The diagram shows the structure of the drive module.

[0022] Figure label:

[0023] Front end shell 100, shell body 110, insert block 111, third hole 112, container frame 120, bottom support 121, first cylindrical part 121A, fourth hole 121A1, support part 121B, mounting cover 122, fifth hole 122A;

[0024] Input gear 210, connecting hole 211, output gear 220, transmission gear set 230, first gear 231, second connecting shaft 231A, second gear 232;

[0025] Drive module 300, connecting sleeve 310, second hole 311, drive sleeve 320;

[0026] Open toothed ring 400, tooth 410, inner hole 420;

[0027] Clamping assembly 500;

[0028] Drive gear 610, first connecting shaft 611;

[0029] Second cylindrical section S1, first hole S11, slot S2. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, the use of terms such as first, second, third, fourth, and fifth is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 6 This utility model provides a detachable electric wrench, which includes a front end housing 100, a connecting tooth assembly, a drive module 300, and an open toothed ring 400.

[0035] The front-end housing 100 includes a connected housing body 110 and a container frame 120. The container frame 120 is rotatably equipped with a drive gear 610. A connecting gear set includes an input gear 210, two output gears 220, and a transmission gear set 230. The output gears 220 are rotatably mounted on the housing body 110, and the transmission gear set 230 is mounted on the housing body 110. The input gears 210 are rotatably mounted on the container frame 120 and mesh with the drive gear 610. The transmission gear set 230 connects the output gears 220 and the input gears 210. A drive module 300 is detachably mounted on the container frame 120. The drive module 300 and... A drive gear 610 is connected, and an open toothed ring 400 is disposed on the housing body 110. The teeth 410 on the outer periphery of the open toothed ring 400 mesh with at least one output gear 220. The inner hole 420 of the open toothed ring 400 is provided with a clamping assembly 500. The drive module 300 can drive the drive gear 610 to rotate, so that the drive gear 610 drives the open toothed ring 400 to rotate through the input gear 210, the transmission gear set 230 and the output gear 220, thereby causing the workpiece clamped by the clamping assembly 500 to rotate through the opening of the open toothed ring 400 and inserted into its inner hole 420.

[0036] With the above structure, on the one hand, the drive module 300 is detachably connected to the container 120, so it can be disassembled during transport packaging to reduce the space occupied by the overall electric wrench, thereby reducing the transportation cost of the electric wrench; on the other hand, the input gear 210 is rotatably mounted on the container 120 and meshes with the drive gear 610, which is also rotatably mounted on the container 120. In other words, the input gear 210 and the drive gear 610 can be installed and meshed through only one container 120. The integrated or modular pre-assembled container 120 can make the positioning between the input gear 210 and the drive gear 610 more accurate and can effectively solve the problem of error accumulation caused by the assembly of multiple parts in the traditional way, so as to ensure the meshing accuracy of the input gear 210 and the drive gear 610.

[0037] In this embodiment, refer to Figures 1 to 4 The container frame 120 includes a detachably connected bottom support 121 and a mounting cover 122. The bottom support 121 has a connected, integrally formed first cylindrical portion 121A and a supporting portion 121B. The supporting portion 121B and the mounting cover 122 together form a second cylindrical portion S1. The input gear 210 and the drive gear 610 are rotatably passed through the first cylindrical portion 121A and the second cylindrical portion S1, respectively. The second cylindrical portion S1 is detachably connected to the drive module 300. The first cylindrical portion 121A is connected to the shell body 110.

[0038] With the above structure, the base support 121 is detachably connected to the mounting cover 122 so that the drive gear 610 can be easily assembled into the second cylindrical portion S1 formed by the support portion 121B and the mounting cover 122.

[0039] In some embodiments, the base support 121 and the mounting cover 122 are integrally formed.

[0040] The first cylindrical section 121A is connected to the shell body 110, and the bottom support 121 and the mounting cover 122 are detachably connected. For details, refer to... Figures 1 to 4 The shell body 110 is provided with a third hole 112, the first cylindrical part 121A is provided with a fourth hole 121A1, and the mounting cover 122 is provided with a fifth hole 122A. Bolts are inserted through the third hole 112, the fourth hole 121A1 and the fifth hole 122A.

[0041] To improve the connection strength between the first cylindrical section 121A and the shell body 110, refer to Figure 1 and Figure 2 A slot S2 is provided between the support part 121B and the mounting cover 122, and the shell body 110 is provided with a plug 111, which is inserted into the slot S2.

[0042] The second cylindrical section S1 is detachably connected to the drive module 300, which is connected to the drive gear 610. For details, please refer to... Figure 1 , Figure 2 , Figure 3 as well as Figure 6 The drive gear 610 is provided with a first connecting shaft 611 located in the inner cavity of the second cylindrical part S1. The drive module 300 is provided with a connecting sleeve 310 and a drive sleeve 320 located in the connecting sleeve 310. The drive module 300 is sleeved on the second cylindrical part S1 through the connecting sleeve 310, and the drive sleeve 320 is sleeved on the first connecting shaft 611. The drive module 300 can drive the drive sleeve 320 to rotate, so that the drive sleeve 320 drives the drive gear 610 to rotate through the first connecting shaft 611.

[0043] With the above structure, the drive module 300 is connected to the second cylinder S1 and the drive gear 610 by means of a kit, so as to improve the coaxiality of the drive sleeve 320 and the first connecting shaft 611.

[0044] To improve the connection stability between the second cylindrical section S1 and the drive module 300, refer to Figure 2 , Figure 3 , Figure 4 as well as Figure 6 The second cylindrical part S1 is provided with four first holes S11, and the connecting sleeve 310 is provided with four second holes 311. Fasteners are inserted through the four second holes 311 and the four first holes S11 in a one-to-one correspondence. The fasteners are bolts. Two of the first holes S11 are located on the mounting cover 122, and the other two first holes S11 are located on the support part 121B.

[0045] The transmission gear set 230 includes a first gear 231 and two second gears 232, as shown in the figure. Figure 2 and Figure 5 The first gear 231 and the second gear 232 are both rotatably mounted on the housing body 110. The two output gears 220 mesh with the two second gears 232 in a one-to-one correspondence. The two second gears 232 mesh with the first gear 231. The first gear 231 is connected to the input gear 210. The rotating input gear 210 can drive the first gear 231 to rotate. The rotation axis of the open gear ring 400, the rotation axis of the output gear 220, the rotation axis of the second gear 232, and the rotation axis of the first gear 231 are arranged sequentially from front to back.

[0046] The first gear 231 is connected to the input gear 210. For details, please refer to... Figure 2 and Figure 3 The first gear 231 is provided with a second connecting shaft 231A, the input gear 210 is provided with a connecting hole 211, the second connecting shaft 231A passes through the connecting hole 211, and the first gear 231 and the input gear 210 are coaxially arranged.

[0047] In this embodiment, refer to Figure 5 The horizontal line connecting the rotation axis of the first gear 231 and the rotation axis of one of the output gears 220 is L1, and the horizontal line connecting the rotation axis of the first gear 231 and the rotation axis of the other output gear 220 is L2. The included angle between L1 and L2 is β, where β = 120°.

[0048] With the above structure, when β falls within the range of 110° to 130°, the compactness of the connecting tooth assembly is better, and the front end shell 100 portion occupied by the connecting tooth assembly is smaller. Therefore, more space can be provided for the setting of a larger size open tooth ring 400. It can be seen that this setting can achieve the setting of a larger size open tooth ring 400 without adding additional installation materials or adding additional weight to the overall electric wrench.

[0049] In some embodiments, β = 125°.

[0050] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A disassemblable electric wrench, characterized by: include The front end housing (100) includes a connected housing body (110) and a container frame (120), wherein the container frame (120) is rotatably provided with a drive gear (610); A connecting gear set includes an input gear (210), at least two output gears (220), and a transmission gear set (230). The output gears (220) are rotatably mounted on the housing body (110), the transmission gear set (230) is mounted on the housing body (110), the input gears (210) are rotatably mounted on the container frame (120) and mesh with the drive gear (610), and the transmission gear set (230) connects the output gears (220) and the input gears (210). A drive module (300) is detachably mounted on the container (120), and the drive module (300) is connected to the drive gear (610); An open toothed ring (400) is disposed on the housing body (110). The teeth (410) on the outer periphery of the open toothed ring (400) mesh with at least one of the output gears (220). The inner hole (420) of the open toothed ring (400) is provided with a clamping assembly (500). The drive module (300) can drive the drive gear (610) to rotate, so that the drive gear (610) drives the open gear ring (400) to rotate through the input gear (210), the transmission gear group (230) and the output gear (220), thereby causing the workpiece held by the clamping assembly (500) to rotate through the opening of the open gear ring (400) and inserted into its inner hole (420).

2. The detachable electric wrench according to claim 1, characterized in that: The container rack (120) is provided with a first cylindrical section (121A) and a second cylindrical section (S1). The input gear (210) and the drive gear (610) are rotatably passed through the first cylindrical section (121A) and the second cylindrical section (S1), respectively. The second cylindrical section (S1) is detachably connected to the drive module (300), and the first cylindrical section (121A) is connected to the shell body (110).

3. A detachable electric wrench according to claim 2, characterized in that: The container rack (120) includes a detachably connected bottom support (121) and a mounting cover (122). The bottom support (121) is provided with a connected first cylindrical portion (121A) and a supporting portion (121B). The supporting portion (121B) and the mounting cover (122) together form the second cylindrical portion (S1).

4. A detachable electric wrench according to claim 3, characterized in that: A slot (S2) is provided between the support part (121B) and the mounting cover (122), and the shell body (110) is provided with a plug (111), which is inserted into the slot (S2).

5. A detachable electric wrench according to claim 2, characterized in that: The drive gear (610) is provided with a first connecting shaft (611) located in the inner cavity of the second cylindrical portion (S1). The drive module (300) is provided with a connecting sleeve (310) and a drive sleeve (320) located inside the connecting sleeve (310). The drive module (300) is sleeved on the second cylindrical portion (S1) through the connecting sleeve (310), and the drive sleeve (320) is sleeved on the first connecting shaft (611). The drive module (300) can drive the drive sleeve (320) to rotate, so that the drive sleeve (320) drives the drive gear (610) to rotate through the first connecting shaft (611).

6. A detachable electric wrench according to claim 5, characterized in that: The second cylindrical part (S1) is provided with a first hole (S11), and the connecting sleeve (310) is provided with a second hole (311). Fasteners are inserted through the second hole (311) and the first hole (S11).

7. A detachable electric wrench according to claim 1, characterized in that: The output gears (220) are configured as two, and the transmission gear set (230) includes a first gear (231) and two second gears (232). Both the first gear (231) and the second gears (232) are rotatably mounted on the housing body (110). The two output gears (220) mesh with the two second gears (232) in a one-to-one correspondence, and both second gears (232) mesh with the first gear (231). The first gear (231) is connected to the input gear (210). The rotating input gear (210) can drive the first gear (231) to rotate.

8. A detachable electric wrench according to claim 7, characterized in that: The rotation axis of the open gear ring (400), the rotation axis of the output gear (220), the rotation axis of the second gear (232), and the rotation axis of the first gear (231) are arranged sequentially from front to back.

9. A detachable electric wrench according to claim 8, characterized in that: The horizontal line connecting the rotation axis of the first gear (231) and the rotation axis of one of the output gears (220) is L1, and the horizontal line connecting the rotation axis of the first gear (231) and the rotation axis of the other output gear (220) is L2, wherein the included angle between L1 and L2 is β, and 110°≤β≤130°.

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