Double offset ring spanner
By designing a plum wrench with bent handles and multi-functional adjustment components, the problem that existing plum wrench cannot adapt to multiple bolt or nut models is solved, and the adaptability and cost-effectiveness to multiple models is improved.
Patent Information
- Application Number
- CN202420679070.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-04-02
AI Technical Summary
Existing plum wrenches usually only have a single or two-size wreath-shaped collar, which cannot meet the twisting needs of bolts or nuts of different models, resulting in the tool box being equipped with multiple wrenches of different models, which increases the difficulty of carrying and purchase costs.
A plum wrench including a handle, a first ring, a second ring and an adjustment assembly is designed. Bending parts are provided at both ends of the handle to fix the first and second rings, and through holes and snap holes are provided on the limit rings. The plum blossom holes are embedded through the adjustment assembly to accommodate bolts or nuts of different models.
This plum blossom wrench can meet the twisting operations of five or more bolts or nuts of different types, reduces the number of wrenches in the tool box, reduces the difficulty of carrying and purchase costs, and achieves the multi-purpose effect of wrenches.
Smart Images
Figure CN222932637U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wrenches, in particular to a box wrench. Background Art
[0002] A box wrench refers to a wrench with a flower-shaped collar provided at one or both ends of a handle, and is an important tool for screwing bolts or nuts of a certain size. According to the types and model sizes of products fixed by bolts, different products often use different models of bolts or nuts, and multiple different models of bolts or nuts are often used on the same product. However, the box wrenches on the market generally only have flower-shaped collars of a single size or two sizes, and the types of bolts or nuts that can be screwed are limited. In this way, when performing operations such as assembling, disassembling, and installing products, if it involves screwing operations of multiple specifications of bolts or nuts, it is often necessary to equip multiple box wrenches of different models in a toolbox. Since box wrenches are mostly made of alloy structural steel or high-quality carbon steel, they are relatively heavy. When multiple box wrenches are placed in a toolbox, it will increase the difficulty of carrying the toolbox; multiple wrenches will also increase the purchase cost for users. Summary of the Utility Model
[0003] Based on this, in view of the above deficiencies, it is necessary to provide a box wrench that can meet the screwing operations of multiple different models of bolts and nuts, without the need to equip multiple wrenches, reducing the difficulty of carrying the toolbox and the purchase cost of wrenches.
[0004] A box wrench includes:
[0005] A handle, one end of the handle is bent by a first angle towards the handle side to form a first bent portion, and the other end of the handle is bent by a second angle towards the other side of the handle to form a second bent portion, and both the first angle and the second angle are less than 90°;
[0006] A first collar, the first collar is fixed at the end of the first bent portion, and the height direction of the first collar is perpendicular to the length extension direction of the handle. The inner space of the first collar forms a first plum blossom hole, and at least one first through hole is provided on the inner wall of the first plum blossom hole, and the first through hole penetrates the outer ring surface of the first collar; on the side of the first collar facing the handle, a first limiting ring is provided at the edge of the first plum blossom hole, and a second plum blossom hole is formed inside the first limiting ring. At least one second through hole is provided on the inner wall of the second plum blossom hole, and the second through hole penetrates the outer ring surface of the first limiting ring, and the radius of the second plum blossom hole is larger than the radius of the first plum blossom hole;
[0007] A second set of rings, the second set of rings being fixed at the end of the second bent portion, and the height direction of the second set of rings being perpendicular to the length extension direction of the handle. The inner space of the second set of rings forms a third plum blossom hole, and at least one third through hole is provided on the inner wall of the third plum blossom hole, and the third through hole penetrates the outer ring surface of the second set of rings; on the side of the second set of rings facing the handle, a second limiting ring is provided at the edge of the third plum blossom hole, and a fourth plum blossom hole is formed within the second limiting ring. At least one fourth through hole is provided on the inner wall of the fourth plum blossom hole, and the fourth through hole penetrates the outer ring surface of the second limiting ring. The radius of the third plum blossom hole is smaller than the radius of the first plum blossom hole, and the radius of the fourth plum blossom hole is between the radius of the first plum blossom hole and the radius of the third plum blossom hole; and
[0008] An adjustment assembly, the adjustment assembly including at least one adjustment ring. The inner space of the adjustment ring forms a clamping hole, and the outer ring surface shape of the adjustment ring is adapted to the inner contour shape of one of the first plum blossom hole, the second plum blossom hole, the third plum blossom hole, and the fourth plum blossom hole. And at least one limiting groove is provided on the outer ring surface of the adjustment ring. The adjustment ring is fixed on the first set of rings, or the second set of rings, or the first limiting ring, or the second limiting ring by a locking member passing through the first through hole, or the second through hole, or the third through hole, or the fourth through hole and inserted into the limiting groove.
[0009] In one embodiment, the first included angle is equal to the second included angle.
[0010] In one embodiment, the first included angle is smaller than the second included angle, the first included angle is greater than 30° and less than or equal to 45°, and the second included angle is greater than 45° and less than 60°.
[0011] In one embodiment, the second through hole is located between the two end faces of the first limiting ring, and the fourth through hole is located between the two end faces of the second limiting ring.
[0012] In one embodiment, the locking member includes a stud for inserting into the first through hole, or the second through hole, or the third through hole, or the fourth through hole, and an operating head located at the head of the stud; internal threads are provided in the first through hole, the second through hole, the third through hole, the fourth through hole, and the limiting groove.
[0013] In one embodiment, the number of the second through holes is greater than two. The second through holes penetrate the inner and outer side surfaces and the two end faces of the first limiting ring, and the plurality of second through holes jointly divide the first limiting ring to form a plurality of first limiting blocks that are spaced apart and independently arranged; the number of the fourth through holes is greater than two. The fourth through holes penetrate the inner and outer side surfaces and the two end faces of the second limiting ring, and the plurality of fourth through holes jointly divide the second limiting ring to form a plurality of second limiting blocks that are spaced apart and independently arranged.
[0014] In one embodiment, a gripping portion is provided at the head of the locking member, and a threaded portion that is threadedly engaged with the limiting groove is provided at the tail of the locking member.
[0015] In one embodiment, the first set ring and the second set ring are respectively welded to the handle, the first limiting ring is welded to the first set ring, and the second limiting ring is welded to the second set ring.
[0016] In one embodiment, the first set ring, the second set ring, the first limiting ring and the second limiting ring are integrally formed.
[0017] When implementing the combination wrench of the present utility model, the first set ring and the second set ring are arranged at both ends of the handle, the first limiting ring is fixed on the first set ring, the second limiting ring is fixed on the second set ring, and an adjusting ring that can be embedded into at least one plum blossom hole is provided, so that the same combination wrench can be used for screwing operations of five or more different models of bolts or nuts. During the operation, only one combination wrench and multiple adjusting rings of different models need to be equipped to meet the disassembly, assembly and fixing operations of the product, etc., reducing the number of wrenches in the toolbox and the difficulty of carrying the toolbox; users do not need to purchase multiple wrenches, realizing the multi-purpose use of one wrench and reducing the purchase cost of the wrench. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of a combination wrench in an embodiment of the present utility model;
[0019] Figure 2 is a schematic structural diagram of a combination wrench in another embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0021] Please refer to Figure 1, the present utility model discloses a plum blossom wrench that can meet the screwing operations of various different models of bolts and nuts, with low purchase cost and low carrying difficulty. The plum blossom wrench includes a handle 100, a first collar 200, a second collar 300, and an adjustment assembly. The handle 100 is used to provide a gripping part or an operating part for the user when screwing a nut or a bolt. The first collar 200 and the second collar 300 are fixed parts on the handle 100, and they cooperate with the first limit ring and the second limit ring to be adapted to different models of nuts or bolts to meet the screwing operations of the corresponding models of nuts or bolts. The adjustment assembly is used to provide a detachable adjustment ring for the plum blossom wrench so that the plum blossom wrench can be adapted to the screwing operations of more models of bolts or nuts.
[0022] Specifically, one end of the handle 100 is bent by a first angle towards one side of the handle 100 to form a first bent portion 110, and the other end of the handle 100 is bent by a second angle towards the other side of the handle 100 to form a second bent portion 120. Both the first angle and the second angle are less than 90°. That is to say, the two ends of the handle 100 are bent in opposite directions to form the first bent portion 110 and the second bent portion 120. In this embodiment, by providing the first bent portion 110 and the second bent portion 120, it is convenient to place the first collar 200 and the second collar 300 into the recessed space for disassembling and assembling the bolts and nuts in the recessed space, and it can provide an operating gap for the fingers to prevent abrasion. In one embodiment, the first angle is equal to the second angle. In another embodiment, the first angle is less than the second angle. That is to say, the bending degrees of the two ends of the handle 100 are different to adapt to the screwing operations of bolts or nuts in recessed spaces with different depths, expanding the use scenarios of the plum blossom wrench. Preferably, the first angle is greater than 30° and less than or equal to 45°, and the second angle is greater than 45° and less than 60°.
[0023] The first set of rings 200 is fixed to the end of the first bent portion 110, and the height direction of the first set of rings 200 is perpendicular to the length extension direction of the handle 100. Thus, when the first set of rings 200 is sleeved on a bolt or a nut, only by rotating the handle 100 around the bolt or the nut can the tightening or loosening of the bolt or the nut be achieved. The inner space of the first set of rings 200 forms a first plum blossom hole 210, and at least one first through hole 220 is formed on the inner wall of the first plum blossom hole 210. The first through hole 220 penetrates the outer ring surface of the first set of rings 200. On the surface of the first set of rings 200 facing the handle 100, a first limiting ring 400 is provided at the edge of the first plum blossom hole 210. A second plum blossom hole 410 is formed inside the first limiting ring 400. At least one second through hole 420 is formed on the inner wall of the second plum blossom hole 410. The second through hole 420 penetrates the outer ring surface of the first limiting ring 400. The radius of the second plum blossom hole 410 is larger than the radius of the first plum blossom hole 210. The second set of rings 300 is fixed to the end of the second bent portion 120, and the height direction of the second set of rings 300 is perpendicular to the length extension direction of the handle 100. The inner space of the second set of rings 300 forms a third plum blossom hole 310, and at least one third through hole 320 is formed on the inner wall of the third plum blossom hole 310. The third through hole 320 penetrates the outer ring surface of the second set of rings 300; on the surface of the second set of rings 300 facing the handle 100, a second limiting ring 500 is provided at the edge of the third plum blossom hole 310. A fourth plum blossom hole 510 is formed inside the second limiting ring 500. At least one fourth through hole 520 is formed on the inner wall of the fourth plum blossom hole 510. The fourth through hole 520 penetrates the outer ring surface of the second limiting ring 500. The radius of the third plum blossom hole 310 is smaller than the radius of the first plum blossom hole 210, and the radius of the fourth plum blossom hole 510 is between the radius of the first plum blossom hole 210 and the radius of the third plum blossom hole 310. Thus, without installing an adjusting component, the two ends of the handle 100 can be used to twist four different types of bolts or nuts.
[0024] The adjusting component includes at least one adjusting ring 600. A clamping hole 610 is formed in the inner space of the adjusting ring 600. The clamping hole 610 can be a plum blossom hole or a hexagonal hole adapted to a hexagonal nut. The outer ring surface shape of the adjusting ring 600 is adapted to the inner contour shape of one of the first plum blossom hole 210, the second plum blossom hole 410, the third plum blossom hole 310, and the fourth plum blossom hole 510. At least one limiting groove is formed in the outer ring surface of the adjusting ring 600. The adjusting ring 600 is fixed on the first sleeve ring 200, the second sleeve ring 300, the first limiting ring 400, or the second limiting ring 500 through a locking member 620 that passes through the first through hole 220, the second through hole 420, the third through hole 320, or the fourth through hole 520 and is inserted into the limiting groove. When in use, the adjusting ring 600 is embedded in one of the first plum blossom hole 210, the second plum blossom hole 410, the third plum blossom hole 310, and the fourth plum blossom hole 510, and is fixed in the corresponding plum blossom hole through the locking member 620 that passes through the corresponding through hole and is inserted into the limiting groove, so as to realize the fixed installation of the adjusting ring 600, so as to cooperate with nuts or bolts of corresponding models through the clamping hole 610 of the adjusting ring 600 to meet the fixation of corresponding nuts or bolts.
[0025] In this embodiment, the outer contour shape of the adjusting ring 600 is designed to be adapted to the inner contour shape of at least one of the respective plum blossom holes, so as to realize the primary positioning of the adjusting ring 600; the adjusting ring 600 is locked by the locking member 620 to realize the secondary positioning of the adjusting ring 600, which can prevent the adjusting ring 600 from rotating in the corresponding plum blossom hole when screwing a bolt or a nut, reduce the shearing force of the outer ring surface of the adjusting ring 600 on the inner surface of the corresponding plum blossom hole, and avoid the problem of scrapping of the plum blossom wrench caused by excessive wear of the outer ring surface of the adjusting ring 600 and the inner surface of the corresponding plum blossom hole, so as to extend the service life of the plum blossom wrench. In addition, in this embodiment, according to the different models of the nuts and bolts to be screwed, the first plum blossom hole 210, the second plum blossom hole 410, the third plum blossom hole 310, and the fourth plum blossom hole 510 can be 12-sided holes or 8-sided holes.
[0026] In one embodiment, the second through-hole 420 is located between the two end faces of the first limiting ring 400, and the fourth through-hole 520 is located between the two end faces of the second limiting ring 500. That is to say, the second through-hole 420 only penetrates the inner and outer side walls of the first limiting ring 400, and the fourth through-hole 520 only penetrates the inner and outer side walls of the second limiting ring 500. Similarly, the first through-hole 220 only penetrates the inner and outer side walls of the first sleeve ring 200, and the third through-hole 320 only penetrates the inner and outer side walls of the second sleeve ring 300, so that the locking member 620 can pass through the corresponding through-hole and be inserted into the limiting groove of the adjusting ring 600 to fix the adjusting ring 600. In this embodiment, the locking member 620 includes a stud for inserting into the first through-hole 220 or the second through-hole 420 or the third through-hole 320 or the fourth through-hole 520 and an operating head located at the head of the stud; internal threads are provided in the first through-hole 220, the second through-hole 420, the third through-hole 320, the fourth through-hole 520 and the limiting groove. That is, the first through-hole 220, the second through-hole 420, the third through-hole 320 and the fourth through-hole 520 are threaded holes, and the limiting groove is a threaded groove.
[0027] Please refer to Figure 2 , in another embodiment, the number of the second through-holes 420 is greater than two. The second through-holes 420 penetrate the inner and outer side faces and the two end faces of the first limiting ring 400, and the plurality of second through-holes 420 jointly divide the first limiting ring 400 to form a plurality of first limiting blocks arranged independently at intervals; the number of the fourth through-holes 520 is greater than two. The fourth through-holes 520 penetrate the inner and outer side faces and the two end faces of the second limiting ring 500, and the plurality of fourth through-holes 520 jointly divide the second limiting ring 500 to form a plurality of second limiting blocks arranged independently at intervals. That is to say, the second through-holes 420 not only penetrate the inner and outer side walls of the first limiting ring 400, but also penetrate the surface of the first limiting ring 400 facing away from the first sleeve ring 200. Similarly, the fourth through-holes 520 not only penetrate the inner and outer side walls of the second limiting ring 500, but also penetrate the surface of the second limiting ring 500 facing away from the second sleeve ring 300. And in this embodiment, the first through-hole 220 only penetrates the inner and outer side walls of the first sleeve ring 200, and the third through-hole 320 only penetrates the inner and outer side walls of the second sleeve ring 300. In this way, while ensuring the overall structural strength of the socket wrench and the mechanical strength of the first sleeve ring 200, the second sleeve ring 300, the first limiting ring 400 and the second limiting ring 500, the overall weight of the socket wrench can be reduced. In this embodiment, a gripping portion is provided at the head of the locking member 620, and a threaded portion that is in threaded cooperation with the limiting groove is provided at the tail of the locking member 620, so as to fix the adjusting ring 600 through the locking member 620 and prevent the adjusting ring 600 from falling off during the rotation of the bolt or nut.
[0028] It should be noted that, in order to improve the stability of the installation of the adjusting ring 600, at least two limiting grooves are symmetrically arranged on the outer ring surface of the adjusting ring 600. Similarly, the positions and numbers of the through holes in each plum blossom hole correspond to the positions and numbers of the limiting grooves on the adjusting ring 600. In this way, the adjusting ring 600 can be fixed in the corresponding collar or limiting ring through a plurality of symmetrically arranged locking members 620, ensuring that the adjusting ring 600 is evenly stressed during the screwing process and preventing the problem of fracture of the locking member 620 caused by excessive stress on a single locking member 620.
[0029] The handle 100, the first collar 200, the second collar 300, the first limiting ring 400, the second limiting ring 500, and the adjusting ring 600 are all made of alloy structural steel or high-quality carbon steel. In one embodiment, the first collar 200 and the second collar 300 are respectively welded to the handle 100, the first limiting ring 400 is welded to the first collar 200, and the second limiting ring 500 is welded to the second collar 300. In another embodiment, the first collar 200, the second collar 300, the first limiting ring 400, and the second limiting ring 500 are integrally formed to reduce the processing difficulty of the plum blossom wrench.
[0030] When implementing the plum blossom wrench of the present utility model, the first collar 200 and the second collar 300 are arranged at both ends of the handle 100, the first limiting ring 400 is fixed on the first collar 200, the second limiting ring 500 is fixed on the second collar 300, and at the same time, an adjusting ring 600 that can be embedded in at least one plum blossom hole is provided, so that the same pair of plum blossom wrenches can be used for screwing operations of five or more different models of bolts or nuts. During the operation, only one plum blossom wrench and a plurality of adjusting rings 600 of different models need to be equipped to meet the disassembly, installation, and fixing operations of the product, reducing the number of wrenches in the toolbox and the difficulty of carrying the toolbox; users do not need to purchase multiple wrenches, realizing the multi-purpose use of one wrench and reducing the purchase cost of the wrench.
[0031] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0032] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A box spanner, characterized in that: include: A handle, wherein one end of the handle is bent toward one side of the handle at a first angle to form a first bent portion, and the other end of the handle is bent toward the other side of the handle at a second angle to form a second bent portion, wherein the first angle and the second angle are both less than 90°; A first sleeve ring, wherein the first sleeve ring is fixed at the end of the first bending portion, and the height direction of the first sleeve ring is perpendicular to the length extension direction of the handle, a first plum blossom hole is formed in the ring space of the first sleeve ring, at least one first through hole is formed on the inner wall of the first plum blossom hole, and the first through hole passes through the outer ring surface of the first sleeve ring; a first limiting ring is provided on the edge of the first plum blossom hole on a side of the first sleeve ring facing the handle, a second plum blossom hole is formed in the first limiting ring, at least one second through hole is formed on the inner wall of the second plum blossom hole, the second through hole passes through the outer ring surface of the first limiting ring, and the radius of the second plum blossom hole is greater than the radius of the first plum blossom hole; A second ring, wherein the second ring is fixed at the end of the second bending portion, and the height direction of the second ring is perpendicular to the length extension direction of the handle, a third plum blossom hole is formed in the ring space of the second ring, and at least one third through hole is formed on the inner wall of the third plum blossom hole, and the third through hole passes through the outer ring surface of the second ring; a second limiting ring is provided on the edge of the third plum blossom hole on a side of the second ring facing the handle, a fourth plum blossom hole is formed in the second limiting ring, and at least one fourth through hole is formed on the inner wall of the fourth plum blossom hole, and the fourth through hole passes through the outer ring surface of the second limiting ring, the radius of the third plum blossom hole is smaller than the radius of the first plum blossom hole, and the radius of the fourth plum blossom hole is between the radius of the first plum blossom hole and the radius of the third plum blossom hole; as well as An adjustment component, the adjustment component includes at least one adjustment ring, the inner space of the adjustment ring forms a clamping hole, the outer ring surface shape of the adjustment ring is adapted to the inner contour shape of one of the first plum blossom hole, the second plum blossom hole, the third plum blossom hole and the fourth plum blossom hole, and the outer ring surface of the adjustment ring is provided with at least one limiting groove, the adjustment ring is fixed to the first sleeve ring or the second sleeve ring or the first limiting ring or the second limiting ring by a locking piece which penetrates the first through hole or the second through hole or the third through hole or the fourth through hole and is inserted into the limiting groove.
2. The box spanner according to claim 1, characterized in that: The first angle is equal to the second angle.
3. The box spanner according to claim 1, characterized in that: The first angle is smaller than the second angle, the first angle is greater than 30° and less than or equal to 45°, and the second angle is greater than 45° and less than 60°.
4. The box spanner according to claim 1, characterized in that: The second through hole is located between the two end surfaces of the first limiting ring, and the fourth through hole is located between the two end surfaces of the second limiting ring.
5. The box spanner according to claim 4, characterized in that: The locking member includes a stud for inserting into the first through hole, the second through hole, the third through hole or the fourth through hole and an operating head located at the head of the stud; the first through hole, the second through hole, the third through hole, the fourth through hole and the limiting groove are provided with internal threads.
6. The box spanner according to claim 1, characterized in that: The number of second through holes is greater than two, and the second through holes penetrate the inner and outer side surfaces and the two end surfaces of the first limiting ring, and the plurality of second through holes jointly divide the first limiting ring to form a plurality of first limiting blocks that are independently arranged at intervals; the number of fourth through holes is greater than two, and the fourth through holes penetrate the inner and outer side surfaces and the two end surfaces of the second limiting ring, and the plurality of fourth through holes jointly divide the second limiting ring to form a plurality of second limiting blocks that are independently arranged at intervals.
7. The box spanner according to claim 6, characterized in that: The head of the locking piece is provided with a gripping portion, and the tail of the locking piece is provided with a threaded portion that matches the thread of the limiting groove.
8. The box spanner according to claim 1, characterized in that: The first sleeve ring and the second sleeve ring are respectively welded to the handle, the first limiting ring is welded to the first sleeve ring, and the second limiting ring is welded to the second sleeve ring.
9. The box spanner according to claim 1, characterized in that: The first sleeve ring, the second sleeve ring, the first limiting ring and the second limiting ring are integrally formed.