Multifunctional chain type wrench for automobile repair

Abstract

The multifunctional chain type wrench comprises a wrench head, a long handle and a chain body, a containing groove for containing the chain body is formed in the long handle in the axial direction, and a chain adjusting buckle is transversely arranged on the wrench head in a penetrating mode; the chain adjusting buckle comprises a key and a guide plate which are located on the two sides of the wrench head respectively, a positioning pin is fixed to the side, corresponding to the wrench head, of the guide plate, a positioning groove is formed in the wrench head, and the positioning pin movably penetrates through the chain body and is inserted into the positioning groove. The storage groove for storing the chain body is formed in the long handle, the storage groove is large in length and sufficient in storage space, the length of the chain body is fixed through the pressing type chain adjusting buckle, adjustment is very convenient, the chain body is prevented from being hindered due to the fact that the length of the chain body is increased during use, and disassembly and assembly of irregular parts fixed through threads during automobile repair are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of auto repair tools, in particular to a multifunctional chain wrench for auto repair. Background Art

[0002] During automobile maintenance, we often encounter some relatively firm parts installed by threads. For parts with regular shapes such as bolts and nuts, we can directly use an ordinary wrench to increase the force to achieve disassembly and assembly. However, for cylindrical or irregularly shaped parts such as oil filters and filters, they are relatively firmly installed and cannot be disassembled and assembled by hand, and irregular shapes cannot be disassembled and assembled by ordinary wrenches. Therefore, multifunctional chain wrenches came into being. The shape of the chain can be changed to adapt to the shape of the parts, thereby achieving smooth disassembly and assembly of irregular parts.

[0003] When using the existing multifunctional chain wrench for auto repair, the fixed hook on the wrench head is hooked on a chain of appropriate length, and the disassembly and assembly are completed by turning the long handle. However, parts are large and small, and there will be an extra section of chain of uncertain length after the chain is wrapped around the parts. When in use, the excess part is very easy to collide with surrounding parts on the car, or be blocked by the surrounding parts and cannot turn the wrench, which is very troublesome and affects the use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a multifunctional chain wrench for auto repair, which is used to solve the problem that the redundant part of the chain of the prior multifunctional chain wrench for auto repair is in the way and affects the use when in use.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A multifunctional chain wrench for auto repair, comprising a wrench head, a long handle and a chain body, wherein a fixing hook for movably clamping the chain body is arranged at the front end of the wrench head, a receiving groove for receiving the chain body is arranged axially inside the long handle, and a chain adjusting buckle is arranged transversely through the wrench head;

[0007] The chain adjustment buckle includes buttons and guide plates respectively located on both sides of the wrench head, guide columns that movably penetrate the wrench head laterally are symmetrically fixed between the buttons and the guide plates, a reset spring support rod is arranged between the buttons and the wrench head, a positioning pin is fixed on one side of the guide plate corresponding to the wrench head, a positioning groove is arranged on the wrench head, and the positioning pin movably penetrates the chain body and is inserted in the positioning groove.

[0008] Preferably, there are two positioning pins, and the chain body is a double-chain structure adapted to the two positioning pins.

[0009] Preferably, the wrench head, the long handle and the fixing hook are an integrated structure, and there are two fixing hooks that are compatible with the double chain structure of the chain body.

[0010] Preferably, chain clearance grooves are provided on both sides of the wrench head corresponding to the fixing hook.

[0011] Preferably, both ends of the storage groove pass through the long handle.

[0012] Preferably, the side of the button facing away from the wrench head is a curved structure convex outward.

[0013] Preferably, both ends of the guide plate close to the wrench head are provided with guiding inclined surfaces corresponding to the chain body.

[0014] Preferably, the surface of the long handle is provided with anti-slip protrusions.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides a storage groove for storing the chain body inside the long handle. The storage groove is long and has sufficient storage space. When in use, it is avoided that the chain body has a long redundant part. The length of the chain body is fixed by a press-type chain adjusting buckle. When pressed, the chain body can be pulled out to adjust the length. After loosening, the length of the chain body can be fixed by a locating pin of the chain adjusting buckle. The other end of the chain body is hooked by a fixing hook, which is very convenient for adjusting the length. When in use, it is also avoided that the extra length of the chain body is in the way, and the disassembly and assembly of irregular parts fixed by threads during auto repair is convenient. The utility model solves the problem that the redundant part of the chain is in the way and affects the use of the existing multifunctional chain wrench for auto repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the long handle of the utility model;

[0019] Figure 3 This is a front view of the wrench head of the utility model;

[0020] Figure 4 This is a top view of the wrench head of the utility model;

[0021] Figure 5 For this utility model Figure 3 Cross-section at AA.

[0022] In the figure: 1. wrench head; 101. fixing hook; 102. positioning groove; 103. chain clearance groove; 2. long handle; 201. storage groove; 202. anti-slip protrusion; 3. chain body; 4. chain adjustment buckle; 401. button; 402. guide plate; 403. guide column; 404. reset spring support rod; 405. positioning pin. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-5 As shown, the utility model provides a technical solution: a multifunctional chain wrench for auto repair, comprising a wrench head 1, a long handle 2 and a chain body 3, the wrench head 1, the long handle 2 and the fixing hook 101 are an integrated structure, and there are two fixing hooks 101 and they are adapted to the double chain structure of the chain body 3, the surface of the long handle 2 is provided with an anti-slip protrusion 202, the front end of the wrench head 1 is provided with a fixing hook 101 for movably clamping the chain body 3, the wrench head 1 is provided with a chain giving groove 103 on both sides corresponding to the fixing hook 101, the long handle 2 is provided with a receiving groove 201 for receiving the chain body 3 along the axial direction, the two ends of the receiving groove 201 penetrate the long handle 2, and the wrench head 1 is horizontally penetrated with a chain adjusting buckle 4;

[0025] The chain adjustment buckle 4 includes a button 401 and a guide plate 402 respectively located on both sides of the wrench head 1. The side of the button 401 facing away from the wrench head 1 is a curved surface structure protruding outward, and both ends of the guide plate 402 close to the wrench head 1 are provided with guiding inclined surfaces corresponding to the chain body 3. A guide column 403 that laterally movably penetrates the wrench head 1 is symmetrically fixed between the button 401 and the guide plate 402. A reset spring support rod 404 is arranged between the button 401 and the wrench head 1. A positioning pin 405 is fixed on the side of the guide plate 402 corresponding to the wrench head 1. The wrench head 1 is provided with a positioning groove 102. The positioning pin 405 movably penetrates the chain body 3 and is inserted in the positioning groove 102. There are two positioning pins 405, and the chain body 3 is a double-chain structure adapted to the two positioning pins 405.

[0026] Working principle: Press the button 401 of the chain adjustment buckle 4, the locating pin 405 moves out of the locating groove 102 and moves outward to separate from the chain body 3, pull the chain body 3 to the outside of the storage groove 201 of the long handle 2 and wrap it around the surface of the irregular parts with disassembly and assembly, release the button 401 after the length is sufficient, and the reset spring support rod 404 drives the locating pin 405 to insert into the chain body 3 and the locating groove 102 to fix the length of the chain body 3 through the guide column 403 and the guide plate 402. After the chain body 3 on the surface of the irregular-shaped parts is tightened as much as possible, it is hooked on the pin shaft of the nearest chain body 3 with the fixing hook 101. At this time, the end of the long handle 2 away from the wrench head 1 is pulled toward the side close to the button 401, so that the irregular parts installed with threads can be screwed. The storage groove 201 is long and has sufficient storage space. The length of the chain body 3 is easy to adjust. When in use, the extra length of the chain body 3 is avoided to get in the way, which is convenient for auto repair work.

[0027] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional chain wrench for automobile repair, comprising a wrench head (1), a long handle (2) and a chain body (3), characterized in that: The front end of the wrench head (1) is provided with a fixing hook (101) for movably engaging the chain body (3); a receiving groove (201) for receiving the chain body (3) is axially provided inside the long handle (2); and a chain adjusting buckle (4) is provided transversely through the wrench head (1); The chain adjustment buckle (4) comprises a button (401) and a guide plate (402) respectively located on both sides of the wrench head (1); a guide column (403) is symmetrically fixed between the button (401) and the guide plate (402) and is laterally movable and passes through the wrench head (1); a return spring support rod (404) is arranged between the button (401) and the wrench head (1); a positioning pin (405) is fixed on one side of the guide plate (402) corresponding to the wrench head (1); the wrench head (1) is provided with a positioning groove (102); the positioning pin (405) is movable and passes through the chain body (3) and is inserted into the positioning groove (102).

2. The multifunctional chain wrench for automobile repair according to claim 1, characterized in that: There are two positioning pins (405), and the chain body (3) is a double chain structure adapted to the two positioning pins (405).

3. The multifunctional chain wrench for automobile repair according to claim 2, characterized in that: The wrench head (1), the long handle (2) and the fixing hook (101) are an integrated structure, and there are two fixing hooks (101) which are compatible with the double chain structure of the chain body (3).

4. The multifunctional chain wrench for automobile repair according to claim 3, characterized in that: Chain clearance grooves (103) are provided on both sides of the wrench head (1) corresponding to the fixing hook (101).

5. The multifunctional chain wrench for automobile repair according to claim 1, characterized in that: Both ends of the storage groove (201) penetrate the long handle (2).

6. The multifunctional chain wrench for automobile repair according to claim 1, characterized in that: The side of the button (401) facing away from the wrench head (1) is a curved structure convex outwards.

7. The multifunctional chain wrench for automobile repair according to claim 1, characterized in that: Both ends of the guide plate (402) close to the wrench head (1) are provided with guiding inclined surfaces corresponding to the chain body (3).

8. The multifunctional chain wrench for automobile repair according to claim 1, characterized in that: The surface of the long handle (2) is provided with anti-slip protrusions (202).

Images