Portable open electric wrench

Abstract

The utility model relates to the technical field of electric wrenches, and discloses a portable open electric wrench, which comprises a wrench body, a driving part and a driving part, the chuck assembly comprises a chuck body and a transmission structure, and the transmission structure is connected with the chuck body and the driving part and drives the chuck body to rotate; the quick release structure comprises a connecting base detachably arranged on the chuck assembly and a fixing piece movably arranged on the connecting base, the driving piece penetrates through the connecting base to be connected with the transmission structure, the fixing piece is provided with a first moving position and a second moving position, when the fixing piece is located at the first moving position, the fixing piece abuts against the driving piece, and when the fixing piece is located at the second moving position, the fixing piece abuts against the driving piece; and when the fixing piece is located at the second moving position, the fixing piece is separated from the driving piece, and limiting on moving of the driving piece is relieved. The portable open electric wrench is easy to disassemble and replace and simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric wrenches, and in particular relates to a portable open-end electric wrench. Background Art

[0002] With the continuous improvement of industrial automation, power tools have been widely used in various fields. As a common fastening tool, open-end electric wrenches play an important role in industries such as automobile manufacturing, mechanical equipment installation and maintenance. However, most open-end electric wrenches on the market usually require additional tools to disassemble when replacing accessories such as chucks. This process is time-consuming and labor-intensive, especially when the chuck needs to be replaced frequently, which greatly affects work efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a portable open-end electric wrench that is easy to disassemble and replace in order to solve the above problems in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a portable open-end electric wrench, comprising:

[0005] A wrench body, the wrench body including a driving member;

[0006] A chuck assembly, comprising a chuck body and a transmission structure, wherein the transmission structure is connected to the chuck body and the driving member, respectively, and drives the chuck body to rotate;

[0007] A quick-release structure, the quick-release structure includes a connecting seat detachably provided on the chuck assembly, and a fixing member movably provided on the connecting seat, the driving member is connected to the transmission structure through the connecting seat, and the fixing member has a first moving position and a second moving position, when the fixing member is in the first moving position, the fixing member abuts against the driving member and forms a limit on the movement of the driving member, when the fixing member is in the second moving position, the fixing member is separated from the driving member and the limit on the movement of the driving member is released.

[0008] In the above-mentioned portable open-end electric wrench, the connecting base includes an installation slot and a connecting hole that are interconnected. The driving member is detachably inserted into the installation slot and passes through the installation slot to be connected to the transmission structure. The fixing member is movably arranged in the connecting hole. When the fixing member is in the first moving position, the fixing member extends into the installation slot and abuts against the driving member, and forms a limit for the lateral and longitudinal movement of the driving member. When the fixing member is in the second moving position, the fixing member is separated from the driving member and the limit on the driving member is released.

[0009] In the above-mentioned portable open-end electric wrench, the mounting groove extends in a direction perpendicular to the chuck assembly and is arranged perpendicular to the connecting hole, and the fixing member is horizontally arranged in the connecting hole and moves horizontally in a direction perpendicular to the mounting groove.

[0010] In the above-mentioned portable open-end electric wrench, the mounting slot is provided with a first opening toward the wrench body, and the first opening is provided with a first side wall and a second side wall arranged opposite to each other in the direction away from the wrench body. There is a gap between the first side wall and the second side wall, and the size of the gap gradually decreases along the direction approaching the first opening, so as to limit the horizontal movement of the driving member in the mounting slot toward the direction approaching the first opening.

[0011] In the above-mentioned portable open-end electric wrench, the mounting slot further includes a second opening, the second opening is parallel to the chuck assembly, and is arranged perpendicular to the first opening.

[0012] In the above-mentioned portable open-end electric wrench, the connection holes are provided in two groups, which are respectively provided on the first side wall and the second side wall and are arranged opposite to each other.

[0013] In the above-mentioned portable open-end electric wrench, the connecting hole is a threaded hole and forms a threaded connection with the fixing member, and the fixing member includes a movable end with a thread.

[0014] In the above-mentioned portable open-end electric wrench, the chuck assembly includes a shell, the transmission structure is rotatably arranged in the shell, and has a connecting part extending out of the shell and connected to the driving member, and the shell and the connecting seat are both provided with a through hole for the connecting part to pass through.

[0015] In the above-mentioned portable open-end electric wrench, the diameter of the through hole is adapted to the diameter of the connecting portion, and when the connecting portion is in the through hole, the through hole limits the horizontal movement of the connecting portion.

[0016] In the above-mentioned portable open-end electric wrench, the connecting part is provided with a connecting groove along its own axial direction, the inner wall of the connecting groove is provided with a limiting hole connected to the connecting groove, and the driving member is movably provided with an elastic part that forms a concave-convex fit with the limiting hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging a quick-release structure having a connecting seat and a fixing member between the wrench body and the chuck assembly, the fixing member is movably connected to the connecting seat and has a first moving position and a second moving position, so that the driving member passes through the connecting seat and is connected to the transmission structure, and the limiting and release of the driving member are achieved by the movement of the fixing member between the first moving position and the second moving position, so that the user can easily replace the wrench body without the aid of additional tools, greatly saving the time for installation and disassembly of the wrench body. At the same time, the open-end electric wrench can be stored in sections, effectively improving the portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a structural diagram of a portable open-end electric wrench according to an embodiment of the present invention.

[0019] Figure 2 This is an exploded view of a portable open-end electric wrench according to an embodiment of the present utility model.

[0020] Figure 3 It is a structural schematic diagram of the quick-release structure in an embodiment of the present utility model.

[0021] Figure 4 This is an exploded view of the quick-release structure in an embodiment of the present utility model.

[0022] In all the drawings, the same reference numerals represent the same technical features, specifically: 100, wrench body; 110, driving member; 111, connecting head; 112, rotating shaft; 113, elastic part; 114, adjusting knob; 120, handle; 200, chuck assembly; 210, chuck body; 211, fixing groove; 212, second notch; 213, gear teeth; 220, transmission structure; 221, connecting part; 222, connecting Connecting groove; 223, limiting hole; 224, power gear; 225, driven gear; 230, shell; 231, base; 232, outer cover; 233, through hole; 234, movable hole; 235, first notch; 300, connecting seat; 310, mounting groove; 311, first opening; 312, second opening; 313, first side wall; 314, second side wall; 320, connecting hole; 400, fixing piece; 410, movable end. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] like Figures 1 to 4 As shown, a portable open-end electric wrench includes a wrench body 100 , a chuck assembly 200 , a connecting seat 300 and a fixing member 400 .

[0026] like Figures 1 to 4 As shown, a portable open-end electric wrench comprises:

[0027] The wrench body 100 includes a driving member 110;

[0028] A chuck assembly 200 includes a chuck body 210 and a transmission structure 220. The transmission structure 220 is connected to the chuck body 210 and the driving member 110, respectively, and drives the chuck body 210 to rotate;

[0029] The quick-release structure includes a connecting base 300 detachably mounted on the chuck assembly 200 and a fixing member 400 movably mounted on the connecting base 300. The driving member 110 passes through the connecting base 300 and is connected to the transmission structure 220. The fixing member 400 has a first movable position and a second movable position. When the fixing member 400 is in the first movable position, the fixing member 400 abuts against the driving member 110 and limits the movement of the driving member 110. When the fixing member 400 is in the second movable position, the fixing member 400 separates from the driving member 110 and releases the limit on the driving member 110. This allows the user to easily replace the wrench body 100 without the aid of additional tools, greatly saving time in installing and removing the wrench body 100. At the same time, the open-end electric wrench can be stored in sections, effectively improving portability.

[0030] Specifically, if Figures 1 to 2 As shown, in this embodiment, the wrench body 100 serves as a power component and includes a handle 120 and a driving member 110. One end of the driving member 110 is placed in the handle 120, and the other end extends outside the handle 120 and is connected to the transmission structure 220. The end of the driving member 110 includes a connector 111 and a rotating shaft 112 rotatably disposed in the connector 111. The rotating shaft 112 is connected to the transmission structure 220 and drives the transmission structure 220 to rotate, so that the transmission structure 220 can drive the chuck body 210 to rotate, thereby tightening or loosening the workpiece.

[0031] In this embodiment, the driving member 110 further includes an adjustment knob 114 disposed on the connecting head 111 in a direction away from the chuck assembly 200. The adjustment knob 114 is connected to the rotating shaft 112 to achieve a reversal of the rotation direction of the rotating shaft 112. In addition, the rotating shaft 112 is provided with an elastic portion 113 at one end near the chuck assembly 200. The elastic portion 113 forms a concave-convex fit with the limiting hole 223 and is engaged with the limiting hole 223 when the rotating shaft 112 extends into the connecting portion 221. When the driving member 110 is disassembled, the elastic portion 113 can be disengaged from the limiting hole 223 by pressing the adjustment knob 114, thereby releasing the limit on the rotating shaft 112. The cooperation between the elastic portion 113 and the limiting hole 223 effectively ensures the reliability of the connection between the driving member 110 and the transmission structure 220, thereby ensuring the stability of the workpiece tightening or loosening process. It should be noted that the wrench body 100 is a standard part, and its working principle will not be described in detail in this embodiment.

[0032] In order to achieve tightening or loosening of the workpiece, in this embodiment, the chuck assembly 200 includes a shell 230, a chuck body 210 and a transmission structure 220. The chuck body 210 is rotatably provided on the shell 230 and includes a fixing groove 211 adapted to the shape of the workpiece for adapting to the workpiece. The transmission structure 220 is rotatably provided in the shell 230 and is respectively connected to the chuck body 210 and the driving member 110, and drives the chuck body 210 to rotate forward or reverse under the drive of the driving member 110, thereby achieving tightening or loosening of the workpiece.

[0033] In this embodiment, the shell 230 includes a base 231 and an outer cover 232, and the base 231 and the outer cover are both provided with a movable hole 234, and a first notch 235 that connects the movable hole 234 with the outside. The chuck body 210 is rotatably disposed in the movable hole 234 and is coaxial with the movable hole 234. The chuck body 210 also includes a second notch 212 that connects the fixing groove 211 with the outside, and the size of the second notch 212 is adapted to the size of the first notch 235 so that the workpiece can be clamped into the fixing groove 211 from the side.

[0034] To achieve rotation of the chuck body 210, the transmission structure 220 includes a power gear 224 rotatably mounted on a base 231 and two sets of driven gears 225. The power gear 224 is connected to the driver 110 and meshes with the driven gears 225. The driven gears 225 mesh with the power gear 224 on one side and with the chuck body 210 on the other side. The chuck body 210 is circumferentially arranged with gear teeth 213. When the driver 110 drives the power gear 224 to rotate, the driven gears 225 rotate synchronously and drive the chuck body 210 to rotate axially.

[0035] In this embodiment, the outer cover 232 is detachably connected to the base 231 and covers the transmission structure 220 on the base 231 to prevent debris from entering the transmission structure 220, thereby effectively ensuring the stability of the operation of the transmission structure 220.

[0036] In this embodiment, the power gear 224 is further provided with a connecting portion 221 extending out of the outer cover 232 and connected to the driving member 110, and a through hole 233 for the connecting portion 221 to pass through is provided on the outer cover 232 and the connecting seat 300. This not only enables rapid connection between the driving member 110 and the transmission structure 220, but also enables rapid positioning of the connecting seat 300, effectively improving installation efficiency.

[0037] In this embodiment, the diameter of the through hole 233 is adapted to the diameter of the connecting portion 221, and when the connecting portion 221 is in the through hole 233, the through hole 233 limits the horizontal movement of the connecting portion 221, which not only ensures the stability of the connecting portion 221, but also improves the stability of the connection between the connecting seat 300 and the clamping assembly 200.

[0038] In this embodiment, the connecting portion 221 is provided with a connecting groove 222 along its axial direction. The connecting groove 222 is rectangular, and its inner wall is provided with a limiting hole 223 that communicates with the connecting groove 222. The limiting holes 223 are provided in a plurality along the circumference of the connecting groove 222, and form a concave-convex fit with the limiting holes 223. This effectively ensures the reliability of the connection between the driving member 110 and the power gear 224.

[0039] like Figures 2 to 4 As shown, in order to achieve efficient and convenient installation and disassembly of the wrench body 100 and the chuck assembly 200, in this embodiment, a quick-release structure is further included between the chuck assembly 200 and the wrench body 100, and the quick-release structure includes a connecting seat 300 detachably provided on the outer cover 232 away from the transmission structure 220, and a fixing member 400 movably provided on the connecting seat 300, the fixing member 400 has a first moving position and a second moving position, and when the fixing member 400 is in the first moving position, it is in contact with the connecting head 111 of the driving member 110. When the fixing member 400 is in the second moving position, it is separated from the connecting head 111 and the limit on the movement of the connecting head 111 is released. The fixing member 400 moves between the first moving position and the second moving position to limit and release the driving member 110, so that the wrench body 100 can be quickly connected to and disassembled from the chuck assembly 200, which not only improves the efficiency of component replacement, but also improves work efficiency, shortens the length of the open-end electric wrench when stored, and improves portability.

[0040] In this embodiment, the connecting seat 300 includes an installation groove 310 and a connecting hole 320 that are interconnected. The driving member 110 is detachably inserted into the installation groove 310 and is connected to the transmission structure 220 through the installation groove 310. Specifically, the installation groove 310 is used to accommodate the connecting head 111. The connecting head 111 of the driving member 110 is detachably inserted into the installation groove 310. The rotating shaft 112 passes through the installation groove 310 and is connected to the connecting groove 222. The fixing member 400 is movably arranged in the connecting hole 320. When the fixing member 400 is in the first moving position, the fixing member 400 extends into the installation groove 310 through the connecting hole 320 and abuts against the connecting head 111, forming a limit for the lateral and longitudinal movement of the connecting head 111. When the fixing member 400 is in the second moving position, the fixing member 400 is separated from the connecting head 111. The design of the mounting slot 310 and the connection hole 320 achieves an effective connection between the driver 110 and the chuck assembly 200. The fixing member 400 extends into the mounting slot 310 and abuts against the driver 110, providing a reliable positioning mechanism and ensuring the stability of the connection.

[0041] In this embodiment, the connecting seat 300 is provided with a plurality of first fixing holes along the circumference, and the outer cover 232 is provided with a plurality of second fixing holes corresponding one to one with the first fixing holes. The connecting seat 300 is detachably connected to the outer cover 232 through screws, the first fixing holes and the second fixing holes.

[0042] In this embodiment, the mounting groove 310 is an irregular U-shape, extending in a direction perpendicular to the clamp assembly 200, and is arranged perpendicular to the connecting hole 320, and the fixing member 400 is horizontally movably arranged in the connecting hole 320, and moves horizontally in a direction perpendicular to the mounting groove 310, which not only ensures that the fixing member 400 can move in the correct direction, but also simplifies the moving stroke of the fixing member 400.

[0043] In this embodiment, the mounting groove 310 is provided with a first opening 311 facing toward the wrench body 100. The first opening 311 is provided with a first side wall 313 and a second side wall 314 arranged opposite each other, facing away from the wrench body 100. A gap is defined between the first side wall 313 and the second side wall 314, and the size of the gap gradually decreases as it approaches the first opening 311, thereby restricting the horizontal movement of the driving member 110 within the mounting groove 310 toward the first opening 311. This effectively prevents the connector 111 within the mounting groove 310 from falling out of the mounting groove 310, further ensuring the stability and reliability of the movement of the driving member 110. Furthermore, it prevents the connector 111 from falling out of the mounting groove 310 during installation.

[0044] In this embodiment, the installation groove 310 also includes a second opening 312 that is adapted to the size of the connecting head 111. The second opening 312 is parallel to the clamp assembly 200 and is arranged perpendicular to the second opening 312, so that the driving member 110 can be inserted into the installation groove 310 through the second opening 312 during installation, thereby making the installation and removal of the driving member 110 more convenient and quick.

[0045] In this embodiment, the connecting hole 320 is circular and is provided with two groups, which are respectively provided on the first side wall 313 and the second side wall 314 and are arranged opposite to each other. The two groups of connecting holes 320 are coaxial, so that the fixing member 400 can be provided on any side of the connecting seat 300, thereby improving the installation convenience of the fixing member 400.

[0046] In this embodiment, the connecting hole 320 is a threaded hole and forms a threaded connection with the fixing member 400. The fixing member 400 includes a threaded movable end 410, and the two are threadedly connected to achieve a removable connection between the fixing member 400 and the connecting base 300. This threaded connection not only ensures that the fixing member 400 can be firmly fixed in the connecting hole 320, but also facilitates the removal of the fixing member 400, further ensuring the portability of the open-end electric wrench.

[0047] It should be noted that, in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0048] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A portable open-end electric wrench, characterized in that: include: A wrench body, the wrench body including a driving member; A chuck assembly, comprising a chuck body and a transmission structure, wherein the transmission structure is connected to the chuck body and the driving member, respectively, and drives the chuck body to rotate; A quick-release structure, the quick-release structure includes a connecting seat detachably provided on the chuck assembly, and a fixing member movably provided on the connecting seat, the driving member is connected to the transmission structure through the connecting seat, and the fixing member has a first moving position and a second moving position, when the fixing member is in the first moving position, the fixing member abuts against the driving member and forms a limit on the movement of the driving member, when the fixing member is in the second moving position, the fixing member is separated from the driving member and the limit on the movement of the driving member is released.

2. A portable open-end electric wrench according to claim 1, characterized in that: The connecting seat includes an installation groove and a connecting hole that are interconnected. The driving member is detachably inserted into the installation groove and passes through the installation groove to be connected to the transmission structure. The fixing member is movably arranged in the connecting hole. When the fixing member is in the first moving position, the fixing member extends into the installation groove and abuts against the driving member, thereby limiting the lateral and longitudinal movement of the driving member. When the fixing member is in the second moving position, the fixing member is separated from the driving member and the limit on the driving member is released.

3. A portable open-end electric wrench according to claim 2, characterized in that: The mounting groove extends in a direction perpendicular to the clamp assembly and is arranged perpendicular to the connecting hole. The fixing member is horizontally arranged in the connecting hole and moves horizontally in a direction perpendicular to the mounting groove.

4. The portable open-end electric wrench according to claim 2, characterized in that: The mounting groove is provided with a first opening toward the wrench body, and the first opening is provided with a first side wall and a second side wall arranged opposite to each other in a direction away from the wrench body. There is a gap between the first side wall and the second side wall, and the size of the gap gradually decreases along the direction approaching the first opening to limit the horizontal movement of the driving member in the mounting groove toward the direction approaching the first opening.

5. The portable open-end electric wrench according to claim 4, characterized in that: The mounting slot further includes a second opening, which is parallel to the clamp assembly and arranged perpendicular to the first opening.

6. The portable open-end electric wrench according to claim 4, characterized in that: The connection holes are provided in two groups, which are respectively provided on the first side wall and the second side wall and are arranged opposite to each other.

7. The portable open-end electric wrench according to claim 2, characterized in that The connecting hole is a threaded hole and forms a threaded connection with the fixing piece, and the fixing piece includes a movable end with a thread.

8. The portable open-end electric wrench according to claim 2, characterized in that: The chuck assembly includes a shell, the transmission structure is rotatably arranged in the shell, and has a connecting part extending out of the shell and connected to the driving member, and the shell and the connecting seat are both provided with a through hole for the connecting part to pass through.

9. The portable open-end electric wrench according to claim 8, characterized in that: The diameter of the through hole is adapted to the diameter of the connecting portion, and when the connecting portion is in the through hole, the through hole limits the horizontal movement of the connecting portion.

10. The portable open-end electric wrench according to claim 8, characterized in that: The connecting portion is provided with a connecting groove along its own axial direction, the inner wall of the connecting groove is provided with a limiting hole communicating with the connecting groove, and the driving member is movably provided with an elastic portion forming a concave-convex fit with the limiting hole.

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