Wrench Drive Assembly

Abstract

To provide a wrench drive assembly that allows a user to easily replace a drive part without being injured during operation. [Solution] The wrench drive assembly includes a wrench (1), an elastic member (2), and a drive member (3). One end of the wrench has a set of ratchets (11). The ratchets have a mounting hole (111). The elastic member is removably attached to the end having the ratchets, with a portion exposed from within the mounting hole. The drive member is removably inserted into the mounting hole, and the end of the drive member inserted into the mounting hole is divided into a fitting portion (31), a limiting portion (32), and a drive portion (33). Both ends of the limiting portion are connected to the fitting portion and the drive portion, respectively, and have an engagement region (34) located near the drive portion. When the fitting portion and limiting portion of the drive member are inserted into the mounting hole, the elastic member is pushed outward by the fitting portion and limiting portion. When the elastic member corresponds to the engagement region, the elastic member returns to its original position due to its elastic recovery force and engages with the engagement region.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION The present invention relates to the field of hand tools, and more particularly to wrench drive assemblies. [Background technology]

[0002] A ratchet wrench allows a user to continuously rotate a screw or nut simply by swinging the handle back and forth via a ratchet mechanism. To accommodate various sizes of screws or nuts, typical ratchet wrenches have recently become interchangeable with sockets and bits of different sizes. The assembly process for such a ratchet wrench, as shown in FIG. 10 , typically involves inserting the insertion end 40 of the socket or bit into the engagement hole 50 of the wrench, and after insertion, the end face of the insertion end 40 is flush with the surface of the wrench. Replacing a different socket or bit requires either manually grasping the tool fitting portion 60 of the socket or bit and forcibly pulling it out, or using another tool to press the end face of the insertion end 40 to remove it. However, this method of replacement is inconvenient and poses a risk of injury to the user when forcibly removing the socket or bit.

[0003] In view of the above circumstances, the inventors of the present invention have conducted extensive research and have completed the wrench drive assembly of the present invention, which overcomes the above-mentioned problems of the prior art. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION A primary object of the present invention is to provide a wrench drive assembly that allows the user to easily replace drive components without injuring themselves during operation. [Means for solving the problem]

[0005] In order to solve the above problems, according to a first aspect of the present invention, there is provided a wrench drive assembly including a wrench, an elastic member, and a drive member, wherein one end of the wrench has a group of ratchets, the ratchets are formed with mounting holes, the elastic member is detachably attached to the end having the group of ratchets, a portion of the elastic member is exposed from inside the mounting hole, the drive member is detachably inserted into the mounting hole, and one end of the drive member inserted into the mounting hole is divided into a fitting portion, a limiting portion, and a drive portion, and both ends of the limiting portion are connected to the fitting portion and a front end. a limiting portion connected to the drive portion, the limiting portion having an engagement region located close to the drive portion; when the fitting portion and the limiting portion of the drive member are inserted into the mounting hole, the elastic member is pushed outward by the fitting portion and the limiting portion; when the elastic member corresponds to the engagement region, the elastic member is restored by its elastic recovery force and engages with the engagement region; when the drive member is combined with the wrench, and the drive member is combined with the wrench, the pressing end of the fitting portion protrudes from the mounting hole. [Effects of the Invention]

[0006] The wrench drive assembly of the present invention allows the user to easily replace drive components without injury during operation. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of a wrench drive assembly according to a first embodiment of the present invention; FIG. [Figure 2] 1 is an exploded perspective view of a wrench drive assembly according to a first embodiment of the present invention; FIG. [Figure 3] FIG. 2 is an exploded perspective view of the wrench drive assembly according to the first embodiment of the present invention, viewed from another angle. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 10 is a perspective view of a wrench drive assembly according to a second embodiment of the present invention; [Figure 6]FIG. 10 is an exploded perspective view of a wrench drive assembly according to a second embodiment of the present invention; [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 5. [Figure 8] FIG. 10 is an exploded perspective view of a wrench drive assembly according to a third embodiment of the present invention. [Figure 9] 10 is a cross-sectional view illustrating the fully assembled wrench drive assembly according to the third embodiment of the present invention; FIG. [Figure 10] 1 is a cross-sectional view showing a completed assembly of a conventional ratchet wrench. DETAILED DESCRIPTION OF THE INVENTION

[0008] The present invention will be described with reference to the accompanying drawings, in which the same reference numerals denote the same or similar components.

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to provide a more detailed understanding of the wrench drive assembly of the present invention, the features and advantages of the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0010] Please refer to Figures 1 to 9. As shown in FIGS. 1 to 9 , a wrench drive assembly according to one embodiment of the present invention includes a wrench 1, an elastic member 2, and a drive member 3. One end of the wrench 1 has ratchets 11. The ratchets 11 are formed with mounting holes 111. The elastic member 2 is detachably attached to the end having the ratchets 11. A portion of the elastic member 2 is exposed from the mounting hole 111. The drive member 3 is detachably inserted into the mounting hole 111. One end of the drive member 3 inserted into the mounting hole 111 is divided into a fitting portion 31, a limiting portion 32, and a drive portion 33. Both ends of the limiting portion 32 are connected to the fitting portion 31 and the drive portion 33, respectively. The limiting portion 32 has an engagement region 34 located close to the drive portion 33.

[0011] During actual assembly, when the fitting portion 31 and the limiting portion 32 of the drive member 3 are inserted into the mounting hole 111, the elastic member 2 is pushed outward by the fitting portion 31 and the limiting portion 32. When the elastic member 2 corresponds to the engagement region 34, the elastic member 2 returns to its original position due to its elastic recovery force and engages with the engagement region 34, and the drive member 3 is combined with the wrench 1. When the drive member 3 is combined with the wrench 1, the pressing end 311 of the fitting portion 31 protrudes from the mounting hole 111.

[0012] Based on the above description, other technical and structural features of the present invention will be further described. The engagement region 34 gradually reduces in outer diameter from the end closest to the limiting portion 32 to the end closest to the driving portion 33. The pressing end 311 includes an end surface 3111. The end surface 3111 is arcuate and protrudes from the opening of the mounting hole 111. When replacing the elastic member 2, pressing the pressing end 311 pushes the elastic member 2 outward in the opposite direction by the fitting portion 31 and the limiting portion 32, thereby disengaging the elastic member 2 from the engagement region 34. The end surface 3111 is arcuate and protrudes from the opening of the mounting hole 111, serving as a pressure point for the user to apply pressure. This allows the driving member 3 to be removed without using a tool to press the end surface 3111. Simply pushing the driving member 3 out eliminates the risk of injury caused by the user forcibly removing the driving member 3 manually. See FIGS. 1 to 4.

[0013] The drive unit 33 may be formed in a rectangular or cylindrical shape. If the drive unit 33 is cylindrical, the end of the drive unit 33 opposite the restrictor 32 may be formed in a line, cross, square, star, or polygonal shape to accommodate threads with different groove shapes. If the drive unit 33 is rectangular, a recess 331 is formed on one side of the drive unit 33, and a pressing member 332 and a positioning member 333 are attached to the recess 331. Both ends of the pressing member 332 are elastically pressed against the bottom of the recess 331 and the positioning member 333, respectively. The positioning member 333 is movable within the recess 331 but does not come off the opening of the recess 331. This configuration prevents the drive unit 33 from rotating or falling off when an external tool (e.g., a socket, bit, etc.) is attached to the drive unit 33 (see FIGS. 5 to 9).

[0014] The ratchet group 11 has a main body 112. There is no particular limitation on the method of attaching the elastic member 2 to the main body 112, but in this embodiment, an attachment groove is provided on the inner wall surface of the main body 112, the elastic member 2 is attached inside the attachment groove, and a portion of the elastic member 2 protrudes from the attachment hole 111 (not shown). Alternatively, the main body 112 may protrude from the wrench 1, and a fitting groove 1121 may be formed between the main body 112 and the wrench 1. The elastic member 2 may be attached to the fitting groove 1121, and a portion of the elastic member 2 may protrude from the attachment hole 111 (as shown in FIGS. 2 to 4 and 6 to 9).

[0015] Please also refer to Figures 5, 6 and 7. 5, 6, and 7, the wrench drive assembly according to the second embodiment of the present invention differs from the previous embodiments in that at least one limiting groove 321 is recessed in a portion of the outer surface of the limiting portion 32 of the engagement region 34. The at least one limiting groove 321 has a first inclined surface 3211 and a second inclined surface 3212. An included angle 3213 is formed between the first inclined surface 3211 and the second inclined surface 3212. The included angle 3213 is 15 to 45 degrees, and preferably 25 degrees, 30 degrees, or 35 degrees.

[0016] Please refer to Figures 8 and 9. FIG. 8 is an exploded perspective view of a wrench drive assembly according to a third embodiment of the present invention. FIG. 9 is a cross-sectional view of the wrench drive assembly according to the third embodiment of the present invention after assembly. As shown in FIGS. 8 and 9, the wrench drive assembly according to the third embodiment of the present invention differs from the previous embodiments in the location of the at least one limiting groove 321. When the drive part 33 is rectangular prism-shaped, the limiting part 32 has a connecting step 322, through which the differently shaped fitting part 31 and the drive part 33 are connected. In the second embodiment, the at least one limiting groove 321 is located above the connecting step 322, while in the third embodiment, it is located at the connecting step 322, which stabilizes the position of the drive member 3 and the elastic member 2 when they are assembled. [Explanation of symbols]

[0017] (Prior Art) 40 Insertion end 50 engagement hole 60 Tool fitting part (This invention) 1 wrench 2 Elastic member 3 Driving member 11 Ratchet Group 31 Fitting part 32 Restricted Section 33 Drive unit 34 Engagement area 111 Mounting hole 112 Main Unit 311 Pressing end 321 Restriction groove 322 Joint step 331 Concave tank 332 Pressing member 333 Positioning member 1121 Installation groove 3111 End face 3211 First Slope 3212 Second Slope 3213 Enclosing angle

Claims

1. 1. A wrench drive assembly comprising a wrench, a resilient member, and a drive member, Any one end of the wrench has a group of ratchets, and the group of ratchets has a mounting hole formed therein; the elastic member is detachably attached to one end having the ratchet group, and a portion of the elastic member is exposed from inside the mounting hole; the drive member is detachably inserted into the mounting hole, one end of the drive member inserted into the mounting hole is divided into a fitting portion, a limiting portion, and a drive portion, both ends of the limiting portion are connected to the fitting portion and the drive portion, respectively, and the limiting portion has an engagement region located near the drive portion, When the fitting portion and the limiting portion of the drive member are inserted into the mounting hole, the elastic member is pushed outward by the fitting portion and the limiting portion, and when the elastic member corresponds to the engagement region, the elastic member is restored by its elastic recovery force and engaged with the engagement region, and when the drive member is combined with the wrench, the pressing end of the fitting portion protrudes from the mounting hole.

2. 2. The wrench drive assembly of claim 1, wherein the engagement region has an outer diameter that gradually decreases from an end closer to the restriction portion to an end closer to the drive portion.

3. 2. The wrench drive assembly of claim 1, wherein a portion of an outer surface of said limiting portion of said engagement region is recessed with at least one limiting groove.

4. At least one of the limiting grooves has a first slope and a second slope, 4. The wrench drive assembly of claim 3, wherein an included angle is formed between said first beveled surface and said second beveled surface.

5. The pressing end includes an end surface, 2. The wrench drive assembly according to claim 1, wherein the end surface is formed in an arcuate shape and protrudes from the opening of the mounting hole.

6. The ratchet group has a body, A mounting tank is provided on the inner wall surface of the main body, 2. The wrench drive assembly according to claim 1, wherein the elastic member is mounted within the mounting groove, and a portion of the elastic member protrudes from the mounting hole.

7. The ratchet group has a body, The body protrudes from the wrench, and a fitting groove is formed between the body and the wrench.

2. The wrench drive assembly according to claim 1, wherein the elastic member is mounted in the mounting groove, and a portion of the elastic member protrudes from the mounting hole.

8. 2. The wrench drive assembly according to claim 1, wherein the drive portion is formed in a rectangular prism or cylindrical shape.

9. 9. The wrench drive assembly of claim 8, wherein when the drive portion is cylindrical, one end of the drive portion opposite the limiting portion is formed in a line shape, a cross shape, an octagon shape, a star shape, or a polygon shape.

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