A multi-functional wrench

Abstract

The present invention discloses a multi-functional wrench, which relates to the technical field of wrenches. The key points of its technical solution include a wrench cylinder and a wrench head; both ends of the wrench head are respectively provided with a threaded connection column and a hexagonal head; the wrench cylinder is provided with a threaded socket that is threadedly connected to the threaded connection column; the hexagonal head is provided with a hexagonal groove and a telescopic adjustment block with one end inserted into the hexagonal groove. The other end of the telescopic adjustment block is rotatably connected to the wrench cylinder, and one end of the telescopic adjustment block facing the inside of the hexagonal groove is provided with an adjustment groove that matches the inner side wall of the hexagonal groove. The present invention has the purpose of making the telescopic adjustment block move linearly relative to the wrench head and then move towards or away from the hexagonal groove, so as to achieve the purpose of matching hexagonal nuts of corresponding sizes and specifications when the adjustment groove matches the hexagonal groove, and making the multi-functional wrench have the effects of being easy to adjust and improving the use efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wrenches, and more specifically, it relates to a multi-functional wrench. Background Art

[0002] A wrench is a commonly used installation and disassembly tool, which is a manual tool that uses the lever principle to turn bolts, screws, nuts, and other threaded fasteners with openings or socket holes for holding bolts or nuts. Wrenches are usually made of structural steel of carbon or alloy materials. Wrenches usually have openings or socket holes for holding bolts or nuts at one or both ends of the handle. When in use, an external force is applied to the handle along the thread rotation direction, and the bolt or nut can be turned.

[0003] Chinese Patent with Publication No. CN216067207U discloses an extended wrench, which includes a wrench head and a wrench handle connected to the wrench head; the wrench head includes a wrench head body, a replaceable nut sleeve, and a nut sleeve fixing unit. The nut sleeve is embedded in the wrench head body, and the nut sleeve fixing unit is arranged adjacent to the nut sleeve. The wrench handle includes at least two detachable connecting pieces connected end to end. Any one of the connecting pieces at the end is fixedly connected to the wrench head body. The connecting piece includes a first connecting portion, a second connecting portion, and a hinged portion connecting the first connecting portion and the second connecting portion. The connecting piece has a first position and a second position in a lockable form. In the first position, the first connecting portion and the second connecting portion are parallel and locked; in the second position, the first connecting portion and the second connecting portion are perpendicular.

[0004] However, although the extended wrench is provided with a replaceable nut sleeve in the wrench head, the size of the nut sleeve under corresponding specifications is fixed, so it is difficult to directly apply to nuts of different sizes and specifications. Different nut sleeves must be replaced, which will cause problems of frequent replacement and affect work efficiency due to selecting a suitable nut sleeve, and it needs to be improved. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a multi-functional wrench, which has the effects of being convenient for adjustment and improving the use efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A multi-functional wrench includes a wrench cylinder and a wrench head; threaded connection columns and hexagonal heads are respectively arranged at both ends of the wrench head; a threaded slot for threaded connection with the threaded connection column is arranged on the wrench cylinder; a hexagonal slot and a telescopic adjustment block with one end inserted into the hexagonal slot are arranged on the hexagonal head. The other end of the telescopic adjustment block is rotatably connected to the wrench cylinder, and an adjustment slot matching the inner side wall of the hexagonal slot is arranged at the end of the telescopic adjustment block facing the hexagonal slot.

[0008] By adopting the above technical solution, rotate the wrench cylinder and make the wrench cylinder perform a rotational movement relative to the wrench head, thereby achieving the effect of adjusting the overall connection length between the wrench head and the wrench cylinder. Since the telescopic adjustment block is rotatably connected to the wrench cylinder, it will cause the wrench cylinder to perform a linear movement relative to the wrench head to achieve the purpose of moving towards or away from the hexagonal groove. Furthermore, when the adjustment groove matches the hexagonal groove, it can match hexagonal nuts of corresponding sizes and specifications, and make the multifunctional wrench have the effects of being easy to adjust and improving the use efficiency.

[0009] The present invention is further configured as: the hexagonal groove is composed of three V-shaped large grooves connected in sequence, and the bottom fold line of one of the V-shaped large grooves intersects and is perpendicular to the axis of the threaded connection column; the adjustment groove is a V-shaped adjustment groove.

[0010] By adopting the above technical solution, when the V-shaped adjustment groove cooperates with the V-shaped large groove, since the interior angles of a regular hexagon remain the same during the size deformation process, it will cooperate with the hexagonal groove to achieve the adjustment of the matching size, so as to be applicable to hexagonal nuts of different sizes and specifications, and significantly improve the adjustment convenience and use efficiency of the multifunctional wrench.

[0011] The present invention is further configured as: a maintenance cover plate fixed by bolts and having one end matching the inner side wall of the hexagonal groove is provided on one side of the hexagonal head, and the telescopic adjustment block is inserted into the hexagonal head through the maintenance cover plate.

[0012] By adopting the above technical solution, the matching and installation difficulty between the telescopic adjustment block and the hexagonal head is reduced, and the maintenance and repair of the telescopic adjustment block can be realized by opening the maintenance cover plate, so as to significantly improve the practicality of the multifunctional wrench.

[0013] The present invention is further configured as: a matching limit groove is provided on the side of the maintenance cover plate that matches the inner side wall of the hexagonal groove, and the telescopic adjustment block is provided with a matching limit block that matches the matching limit groove; and when the matching limit block is fixedly matched with the matching limit groove, the V-shaped adjustment groove coincides with the V-shaped large groove.

[0014] By adopting the above technical solution, when the matching limit block is partially inserted into the matching limit groove, the matching limit groove has the effect of improving the fixing stability of the matching limit block, and after the matching limit block is completely inserted into the matching limit groove, the V-shaped adjustment groove coincides with the V-shaped large groove to achieve the purpose of pairing the hexagonal groove with the corresponding nut for using the multifunctional wrench, making the multifunctional wrench have the effects of structural stability, convenient and efficient use.

[0015] The present invention is further configured such that: one end of the telescopic adjustment block away from the hexagonal groove is fixedly connected to a rotating plug post rotatably connected to the wrench column, and the axis of the rotating plug post coincides with the axes of the threaded connection column and the wrench column.

[0016] By adopting the above technical solution, the telescopic adjustment block is connected to the wrench column by rotating the plug, so that when the wrench column makes a circumferential rotational motion relative to the wrench head, the telescopic adjustment block can make a stable relative circumferential rotational motion under the limit of the wrench column, so as to further improve the use stability of the multifunctional wrench.

[0017] The present invention is further configured as follows: a connecting hole and a matching slot which are connected to the threaded slot in sequence are provided on the inner side of the wrench cylinder, the inner diameter of the connecting hole is smaller than the inner diameter of the threaded slot, and the inner diameter of the matching slot is larger than the inner diameter of the connecting hole; the rotating column passes through the threaded slot and the connecting hole in sequence and is sleeved with an elastic ring which matches and is rotatably connected to the matching slot.

[0018] By adopting the above technical solution, the elastic ring provides an elastic driving force for axial movement for telescopic adjustment, so that when the hexagonal groove and the V-shaped adjustment groove cooperate with the fixed corresponding hexagonal nut, the elastic ring is compressed and deformed by further rotating the wrench column, and the elastic restoring force generated reacts to the hexagonal nut to prevent the hexagonal nut from detaching from the hexagonal groove and the V-shaped adjustment groove, thereby making the multifunctional wrench easy to adjust and improving the use efficiency.

[0019] The present invention is further configured as follows: the rotating plug is provided with an abutment portion located on the side of the elastic ring facing the wrench head and a limiting snap ring located on the other side of the elastic ring, and the rotating plug is provided with a plug ring groove for the limiting snap ring to be inserted and fixed; the width of the plug ring groove is greater than the thickness of the limiting snap ring, and when the limiting snap ring contacts the side of the plug ring groove close to the abutment portion, the two sides of the elastic ring are respectively in contact with the abutment portion and the limiting snap ring; the matching slot is provided with a column ring groove, an anti-dropping snap ring is inserted in the column ring groove, and the elastic ring is located between the anti-dropping snap ring and the side of the matching slot close to the connecting socket.

[0020] By adopting the above technical solution, the abutment portion and the limiting clamp ring can limit the elastic ring on the rotating plug column, and then the matching slot and the anti-drop clamp ring can limit the elastic ring in the matching slot, so that while achieving the rotational connection, it has the effect of convenient disassembly and installation, so that the multifunctional wrench has the effect of easy adjustment and improved use efficiency.

[0021] The present invention is further configured such that friction lines are arranged on the outer side of the wrench cylinder.

[0022] By adopting the above technical solution, the friction texture can significantly increase the friction resistance, so as to prevent slipping when rotating the wrench cylinder and adjusting the depth of the telescopic adjustment block inserted into the hexagonal groove, thereby improving the ease of use of the multifunctional wrench.

[0023] In summary, the present invention has the following beneficial effects: by making the spanner cylinder make a circumferential rotational motion relative to the spanner head, the telescopic adjustment block can make an axial reciprocating motion relative to the spanner head, thereby making the hexagonal groove and the V-shaped adjustment groove cooperate to achieve the effect of stably fixing the hexagonal nuts of corresponding sizes and specifications, and when fixing the corresponding hexagonal nut, the elastic ring that has undergone compression deformation plays a role in improving the fixing stability of the hexagonal nut, and as the matching process of the hexagonal groove and the V-shaped adjustment groove changes, when changing to a hexagonal nut of larger specifications, the connection length between the spanner cylinder and the spanner head is extended to reduce the difficulty of twisting the hexagonal bolt using the lever principle, thereby making the multifunctional wrench easy to adjust and improving the use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of this embodiment;

[0025] Figure 2 It is a schematic cross-sectional structural diagram of this embodiment.

[0026] Explanation of the reference numerals: 1. wrench cylinder; 11. friction pattern; 12. threaded slot; 13. connecting socket; 14. matching slot; 141. cylinder ring groove; 2. wrench head; 21. threaded connecting cylinder; 22. hexagonal head; 221. hexagonal slot; 222. large V-shaped slot; 23. inspection cover; 231. matching limit slot; 24. telescopic adjustment block; 241. V-shaped adjustment slot; 242. matching limit block; 25. rotating plug column; 251. abutment portion; 252. elastic collar; 253. plug column ring groove; 254. limit snap ring; 255. anti-drop snap ring. DETAILED DESCRIPTION

[0027] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0028] like Figure 1As shown in the figure, a multi-functional wrench includes a wrench cylinder and a wrench head. The wrench head is used to connect with bolts, screws, nuts, etc. to achieve the purpose of adjusting the tightening and loosening by screwing; the wrench cylinder is used to connect with the wrench head and reduce the difficulty of screwing according to the lever principle.

[0029] It should be noted that threaded connection columns and hexagonal heads are respectively arranged at both ends of the wrench head of this embodiment. The threaded connection column is threadedly connected with the wrench cylinder, and a hexagonal groove and a telescopic adjustment block with one end inserted into the hexagonal groove are arranged on the hexagonal head. Among them, the other end of the telescopic adjustment block is rotatably connected with the wrench cylinder, and an adjustment groove matching the inner side wall of the hexagonal groove is arranged at the end of the telescopic adjustment block facing the inside of the hexagonal groove, so as to effectively fix and hold hexagonal nuts of corresponding sizes and specifications when the adjustment groove matches the inner side wall of the hexagonal groove. Therefore, when the wrench cylinder is rotated and the wrench cylinder makes a rotational movement relative to the wrench head, the overall connection length between the wrench head and the wrench cylinder can be adjusted. Since the telescopic adjustment block is rotatably connected with the wrench cylinder, the wrench cylinder will make a linear movement relative to the wrench head to achieve the purpose of moving towards or away from the hexagonal groove, and then when the adjustment groove matches the hexagonal groove, the purpose of matching hexagonal nuts of corresponding sizes and specifications can be achieved, and the multi-functional wrench has the effects of being convenient to adjust and improving the use efficiency. At the same time, friction lines are arranged on the outer side of the wrench cylinder. The friction lines play a role in significantly increasing the frictional resistance to prevent slipping when the wrench cylinder is rotated and the depth of the telescopic adjustment block inserted into the hexagonal groove is adjusted, thereby improving the convenience of use of the multi-functional wrench.

[0030] It should be mentioned that the hexagonal groove is composed of three V-shaped large grooves connected in sequence, and the bottom broken line of one of the V-shaped large grooves intersects and is perpendicular to the axis of the threaded connection column. The adjustment groove is a V-shaped adjustment groove. Therefore, when the V-shaped adjustment groove cooperates with the V-shaped large groove, since the interior angles of a regular hexagon remain the same during the size deformation process, the cooperation size can be adjusted in cooperation with the hexagonal groove to be applicable to hexagonal nuts of different sizes and specifications, significantly improving the adjustment convenience and use efficiency of the multi-functional wrench. At the same time, a maintenance cover plate fixed by bolts and with one end matching the inner side wall of the hexagonal groove is arranged on one side of the hexagonal head. The telescopic adjustment block is inserted into the hexagonal head through the maintenance cover plate, which will reduce the matching and installation difficulty between the telescopic adjustment block and the hexagonal head, and the maintenance and repair of the telescopic adjustment block can be realized by opening the maintenance cover plate, so as to significantly improve the practicality of the multi-functional wrench.

[0031] As Figure 1As shown, a matching limit groove is provided on one side of the maintenance cover plate that matches the inner side wall of the hexagonal groove. Correspondingly, the telescopic adjustment block is provided with a matching limit block that matches the matching limit groove. And when the matching limit block is fixedly matched with the matching limit groove, the V-shaped adjustment groove coincides with the V-shaped large groove. Furthermore, when the matching limit block is partially inserted into the matching limit groove, the matching limit groove has the effect of improving the fixing stability of the matching limit block. After the matching limit block is completely inserted into the matching limit groove, the V-shaped adjustment groove coincides with the V-shaped large groove to achieve the purpose of pairing the hexagonal groove with the corresponding nut to use the multi-functional wrench, making the multi-functional wrench have the effects of structural stability, convenient and efficient use.

[0032] As Figure 1 , Figure 2 shown, a rotating insertion post rotatably connected to the wrench cylinder is fixedly connected to one end of the telescopic adjustment block away from the hexagonal groove. The axis of the rotating insertion post coincides with the axes of the threaded connection post and the wrench cylinder. Among them, the telescopic adjustment block is connected to the wrench cylinder through the rotating insertion post to make the telescopic adjustment block perform a stable relative circumferential rotation movement under the limit of the wrench cylinder when the wrench cylinder makes a circumferential rotation movement relative to the wrench head, so as to further improve the use stability of the multi-functional wrench. It should be mentioned that a threaded insertion slot, a connection insertion hole and a matching insertion slot are sequentially arranged inside the wrench cylinder. The threaded insertion slot is used for threaded connection with the threaded connection post. The inner diameter of the connection insertion hole is smaller than the inner diameter of the threaded insertion slot, and the inner diameter of the matching insertion slot is larger than the inner diameter of the connection insertion hole. The rotating insertion post is sleeved with an elastic collar that matches and is rotatably connected to the matching insertion slot after sequentially passing through the threaded insertion slot and the connection insertion hole. The elastic collar provides an elastic driving force for axial movement of the telescopic adjustment, so that when the hexagonal groove cooperates with the V-shaped adjustment groove to fix the corresponding hexagonal nut, by further rotating the wrench cylinder, the elastic collar is compressed and deformed, and then the generated elastic restoring force acts on the hexagonal nut in the opposite direction to prevent the hexagonal nut from disengaging between the hexagonal groove and the V-shaped adjustment groove, so that the multi-functional wrench has the effects of being convenient to adjust and improving the use efficiency.

[0033] Meanwhile, the rotating stud is provided with an abutting portion on the side of the elastic collar facing the wrench head and a limiting snap ring on the other side of the elastic collar. The rotating stud is provided with a stud ring groove for inserting and fixing the limiting snap ring. Among them, the width of the stud ring groove is greater than the thickness of the limiting snap ring, and when the limiting snap ring contacts the side of the stud ring groove close to the abutting portion, both sides of the elastic collar contact the abutting portion and the limiting snap ring respectively. Correspondingly, the matching slot is provided with a cylinder ring groove, and an anti-detachment snap ring is inserted in the cylinder ring groove. The elastic collar is located between the anti-detachment snap ring and the side of the matching slot close to the connecting jack. Therefore, the abutting portion and the limiting snap ring function to limit the elastic collar on the rotating stud, and then the matching slot and the anti-detachment snap ring function to limit the elastic collar in the matching slot, so as to achieve the effect of convenient disassembly and installation while realizing the rotational connection, so that the multi-functional wrench has the effects of being easy to adjust and improving the use efficiency.

[0034] In summary, in this application, by making the wrench cylinder perform a circumferential rotational movement relative to the wrench head, the telescopic adjustment block can perform an axial reciprocating movement relative to the wrench head, and then the hexagonal groove and the V-shaped adjustment groove can cooperate to achieve the effect of stably fixing the corresponding hexagonal nuts of different sizes and specifications. Moreover, when fixing the corresponding hexagonal nuts, the elastically deformed elastic collar functions to improve the fixing stability of the hexagonal nuts. And with the change of the cooperation process between the hexagonal groove and the V-shaped adjustment groove, when changing to the hexagonal nuts of larger sizes and specifications, the connection length between the wrench cylinder and the wrench head elongates, so as to reduce the difficulty of screwing the hexagonal bolt using the lever principle, thereby making the multi-functional wrench have the effects of being easy to adjust and improving the use efficiency.

[0035] The "first", "second", "third", "fourth", etc. (if any) involved in this application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described here can be implemented in an order other than that illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, or device including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, or devices.

[0036] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. Additionally, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] Specific examples are used herein to elaborate on the principles and implementation manners of this application. The descriptions of the above embodiments are only for helping to understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, based on the idea of this application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A multi-functional wrench, characterized in that: it includes a wrench cylinder (1) and a wrench head (2); both ends of the wrench head (2) are respectively provided with a threaded connection column (21) and a hexagonal head (22); the wrench cylinder (1) is provided with a threaded socket (12) that is threadedly connected to the threaded connection column (21); the hexagonal head (22) is provided with a hexagonal groove (221) and a telescopic adjustment block (24) with one end inserted into the hexagonal groove (221), the other end of the telescopic adjustment block (24) is rotatably connected to the wrench cylinder (1), and the end of the telescopic adjustment block (24) facing the inside of the hexagonal groove (221) is provided with an adjustment groove that matches the inner side wall of the hexagonal groove (221); the hexagonal groove (221) is composed of three V-shaped large grooves (222) connected in sequence, and the bottom fold line of one of the V-shaped large grooves (222) intersects and is perpendicular to the axis of the threaded connection column (21); the adjustment groove is a V-shaped adjustment groove (241); the end of the telescopic adjustment block (24) away from the hexagonal groove (221) is fixedly connected with a rotating insertion column (25) that is rotatably connected to the wrench cylinder (1), and the axis of the rotating insertion column (25) coincides with the axes of the threaded connection column (21) and the wrench cylinder (1); the inner side of the wrench cylinder (1) is provided with a connection socket (13) and a matching socket (14) that are sequentially connected to the threaded socket (12), the inner diameter of the connection socket (13) is smaller than the inner diameter of the threaded socket (12), and the inner diameter of the matching socket (14) is larger than the inner diameter of the connection socket (13); the rotating insertion column (25) sequentially passes through the threaded socket (12) and the connection socket (13) and is sleeved with an elastic collar (252) that matches and is rotatably connected to the matching socket (14); the rotating insertion column (25) is provided with an abutting portion (251) on the side of the elastic collar (252) facing the wrench head (2) and a limiting snap ring (254) on the other side of the elastic collar (252), and the rotating insertion column (25) is provided with a column ring groove (253) for inserting and fixing the limiting snap ring (254); the width of the column ring groove (253) is larger than the thickness of the limiting snap ring (254), and when the limiting snap ring (254) contacts the side of the column ring groove (253) close to the abutting portion (251), both sides of the elastic collar (252) are respectively in contact with the abutting portion (251) and the limiting snap ring (254); the matching socket (14) is provided with a column body ring groove (141), and an anti-disengagement snap ring (255) is inserted into the column body ring groove (141), and the elastic collar (252) is located between the anti-disengagement snap ring (255) and the side of the matching socket (14) close to the connection socket (13).

2. The multi-functional wrench according to claim 1, characterized in that: On one side of the hexagonal head (22), there is a maintenance cover plate (23) fixed by bolts and one end of which is matched with the inner side wall of the hexagonal groove (221). The telescopic adjustment block (24) is inserted into the hexagonal head (22) through the maintenance cover plate (23).

3. A multi-functional wrench according to claim 2, characterized in that: On the side of the maintenance cover plate (23) that is matched with the inner side wall of the hexagonal groove (221), there is a matching limit groove (231). The telescopic adjustment block (24) is provided with a matching limit block (242) that is matched with the matching limit groove (231); and when the matching limit block (242) is fixedly matched with the matching limit groove (231), the V-shaped adjustment groove (241) coincides with the V-shaped large groove (222).

4. A multi-functional wrench according to claim 1, characterized in that: There are friction lines (11) on the outer side of the wrench cylinder (1).

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