CN110561322A

CN110561322A - Disassembling tool

Info

Publication number: CN110561322A
Application number: CN201910966848.2A
Authority: CN
Inventors: 路瑞杰; 苗利锋; 王丽; 郝旭光; 刘丽峰
Original assignee: Evergrande New Energy Vehicle Technology Guangdong Co Ltd
Current assignee: Hengda hengchi new energy automobile technology (Guangdong) Co., Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2019-12-13

Abstract

The invention discloses a disassembling tool, comprising: the locking device comprises a hollow sleeve, a spiral disc which is rotatably connected with the hollow sleeve and is arranged at the hollow part of the hollow sleeve, and at least two locking claws which are matched with the spiral disc; the hollow sleeve is provided with a through hole for penetrating the locking claw along the circumferential direction; the spiral disc is provided with a wrench matching part and a spiral sliding groove, and the locking claw is in sliding fit with the spiral sliding groove. At least two locking claws are arranged at equal intervals along the circumferential direction of the hollow sleeve. According to the disassembling tool disclosed by the invention, the conventional sleeve is designed and optimized, the matching stability of the sleeve and the bolt is improved, the stress at the edge of the vertex angle of the bolt is eliminated, and the risk of abrasion and deformation of the bolt is reduced; and enhances the universality for bolts of different specifications.

Description

Disassembling tool

Technical Field

The invention relates to the field of assembly, in particular to a disassembling tool.

Background

Traditional sleeve that is used for dismouting hexagon bolt, its central authorities are the hexagonal hole, use traditional sleeve to fasten and when dismantling external hexagon bolt, the apex angle edge of bolt hexagon head can contact with sleeve hexagonal hole plane part, when torsion is too big, can appear bolt hexagon head edge wearing and tearing, warp, make the increase of the degree of difficulty of dismantling unable dismantlement even. The root cause of sleeve abrasion and even damage to the bolt head is that a gap exists between a sleeve hole and the bolt head, and after the sleeve idles and overcomes the gap, the vertex angle of a hexagonal head of the bolt is contacted with the plane part of the hexagonal hole of the sleeve, so that abrasion damage is caused by stress. Meanwhile, the sleeve of one specification can only be suitable for the bolt of one specification, has the characteristic of one-to-one and is poor in universality.

Disclosure of Invention

Based on the above, the invention provides a disassembling tool to overcome the defects that the bolt head is often worn and damaged when the sleeve in the prior art is used for fastening and disassembling the bolt, so that the bolt is difficult to disassemble and assemble and the universality is poor.

The technical scheme is as follows:

A disassembly and assembly tool comprising: the locking device comprises a hollow sleeve, a spiral disc which is rotatably connected with the hollow sleeve and is arranged at the hollow part of the hollow sleeve, and at least two locking claws which are matched with the spiral disc; the hollow sleeve is provided with a through hole for penetrating the locking claw along the circumferential direction; the spiral disc is provided with a wrench matching part and a spiral sliding groove, and the locking claw is in sliding fit with the spiral sliding groove. At least two locking claws are arranged at equal intervals along the circumferential direction of the hollow sleeve.

According to the disassembling tool in the technical scheme, the conventional sleeve is designed and optimized, the matching stability of the sleeve and the bolt is improved, the stress at the edge of the top angle of the bolt is eliminated, and the risk of abrasion and deformation of the bolt is reduced; and enhances the universality for bolts of different specifications. Specifically, take fastening of hex bolts as an example, when using this technical scheme's assembly and disassembly tools, be connected spanner and spanner cooperation portion, the rotation spanner makes the spiral dish relative hollow sleeve rotates, drive with heliciform spout complex locking claw moves, makes two at least locking claws all produce and follows the motion of hollow sleeve radial direction to make the plane of locking claw laminating and locking bolt hexagon head, when the quantity of locking claw is two, then the locking claw sets up relatively, laminates respectively and two relative planes of locking bolt, when the quantity of locking claw is three, then three locking claw is 120 evenly distributed, and three locking claw pastes respectively and combines the three corresponding face of locking bolt. And the wrench is continuously rotated, and the locking claw applies force to the bolt to fasten or loosen the bolt.

In one embodiment, the helical runner is an archimedes spiral groove.

In one embodiment, the number of the locking claws is three, and the three locking claws are uniformly arranged at intervals along the circumferential direction of the hollow sleeve.

In one embodiment, the wrench matching part is a connecting hole arranged in the center of the spiral disc; the spiral sliding groove is arranged around the periphery of the connecting hole.

In one embodiment, the connection hole is a square hole.

In one embodiment, the spiral disc is of a disc structure, and the inner wall of the hollow sleeve is provided with an annular groove matched with the spiral disc.

In one embodiment, the locking claw comprises a claw part for locking and a convex part which is connected with the claw part and is used for matching with the spiral sliding groove.

In one embodiment, at least two of the locking claws are at equal radial distances from the center of the hollow sleeve.

In one embodiment, the inner wall of the through hole is provided with a mute buffer layer.

in one embodiment, the outer wall of the locking claw is provided with an anti-slip layer.

Drawings

FIG. 1 is a first schematic structural view of a first tool for disassembly and assembly according to an embodiment of the present invention;

FIG. 2 is a second schematic structural view of a disassembling tool according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating a use state of the tool according to an embodiment of the present invention;

FIG. 4 is a schematic view of the hollow sleeve of FIG. 1;

FIG. 5 is a schematic structural view of the spiral disk of FIG. 1;

Fig. 6 is a schematic structural view of the locking claw in fig. 1.

Description of reference numerals:

10. A hollow sleeve; 11. a through hole; 12. an annular groove; 20. a spiral disc; 21. a wrench mating portion; 22. a helical chute; 30. a locking claw; 31. a claw portion; 32. a convex portion; 40. and (4) bolts.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

it will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

A disassembly and assembly tool as shown in fig. 1-6, comprising: the locking device comprises a hollow sleeve 10, a spiral disc 20 which is rotatably connected with the hollow sleeve 10 and is arranged at the hollow part of the hollow sleeve 10, and at least two locking claws 30 which are matched with the spiral disc 20; the hollow sleeve 10 is provided with through holes 11 along the circumferential direction thereof for penetrating the locking claws 30, the through holes 11 correspond to the locking claws 30 one by one in the embodiment, and the through holes 11 have a certain limiting and guiding effect on the locking claws 30; the spiral disk 20 is provided with a wrench matching part 21 and a spiral sliding groove 22, and the locking claw 30 is in sliding fit with the spiral sliding groove 22. At least two locking claws 30 are arranged at regular intervals along the circumferential direction of the hollow sleeve 10.

The disassembly and assembly tool of the embodiment improves the matching stability of the sleeve and the bolt 40 by optimizing the design of the conventional sleeve, eliminates the stress at the edge of the vertex angle of the bolt 40 and reduces the risk of abrasion and deformation of the bolt 40; and enhances versatility to different sized bolts 40. Specifically, taking fastening of a hexagon bolt as an example, when the dismounting tool of the present embodiment is used, the wrench is connected to the wrench matching portion 21, the wrench is rotated to rotate the spiral disk 20 relative to the hollow sleeve 10, and the locking claws 30 matched with the spiral sliding grooves 22 are driven to move, so that at least two locking claws 30 move along the radial direction of the hollow sleeve 10, and thus the locking claws 30 are attached to and lock the plane of the hexagon head of the bolt 40, when the number of the locking claws 30 is two, the locking claws 30 are arranged oppositely and respectively attached to and lock two opposite planes of the bolt 40, and when the number of the locking claws 30 is three, the three locking claws 30 are uniformly distributed at 120 °, and the three locking claws 30 are respectively attached to and lock three corresponding planes of the bolt 40. Continuing to turn the wrench, the locking pawl 30 applies a force to the bolt 40 to tighten or loosen the bolt 40.

When the spiral disk 20 rotates, in order to generate the constant speed motion of the locking claws 30 along the radial direction of the hollow sleeve and to make the locking claws 30 synchronously attach to the planes of the bolt, the spiral chute 22 according to the present embodiment adopts an archimedes spiral groove. The archimedes spiral groove serves as an intermediate transmission structure, and enables the locking claw 30 to generate radial linear motion. An archimedean spiral, also known as a constant velocity spiral, is a trajectory of a point moving away from a fixed point at a constant velocity and simultaneously rotating around the fixed point at a constant angular velocity.

In the present embodiment, a hexagon bolt is taken as an example, so the number of the locking claws 30 in the present embodiment is three, and the three locking claws 30 are uniformly spaced along the circumferential direction of the hollow sleeve 10, that is, the three locking claws 30 are uniformly distributed at 120 °. In other embodiments, a different number of locking claws 30 may be selected according to the type of the bolt 40, and the number of locking claws 30 may be set to one-half of the number of bolt angles. For example, in the case of an octagonal bolt, four locking claws 30 may be used to lock the bolt 40.

in addition, since the rotation directions of fastening and detaching are different, the archimedes spiral groove of the spiral disk 20 for fastening the bolt 40 is opposite to the curved rotation direction of the archimedes spiral groove of the spiral disk 20 for detaching the bolt 40. That is, the screw disk 20 provided when the attaching and detaching tool of the present embodiment is used for fastening is different from the screw disk 20 provided when it is used for detaching. Therefore, the spiral disk 20 of the present embodiment is detachably engaged with the hollow sleeve 10, so that the spiral disk 20 can be conveniently replaced.

In the present embodiment, the wrench engaging portion 21 is a connecting hole formed in the center of the spiral plate 20, and the spiral sliding groove 22 is formed around the periphery of the connecting hole. The connecting hole is arranged at the center, so that the stress is uniform when the spiral disc 20 is matched with the wrench, and the arrangement of the spiral chute 22 is not influenced under the condition that the size of the spiral disc 20 is not increased. By inserting the head of the wrench into the coupling hole and rotating the wrench, the locking claws 30 can be driven to move at a constant speed in the radial direction of the hollow sleeve 10.

Considering that the head of the wrench is usually a square tenon, the connecting hole of the present embodiment is a square hole, and can be matched with a common wrench, thereby avoiding the need of re-manufacturing the wrench to be matched with the disassembling tool of the present embodiment, and increasing the universality of the product.

In this embodiment, the hollow sleeve 10 is a hollow cylinder, the cross section of the hollow portion is circular, the spiral disc 20 is a disc structure matched with the cross section of the hollow portion, and the inner wall of the hollow sleeve 10 is provided with an annular groove 12 matched with the spiral disc 20. The thickness of the spiral disk 20 is matched with the groove width of the annular groove 12, so that the spiral disk 20 can be in clearance fit with the annular groove 12, and when the wrench rotates, the spiral disk 20 can rotate in the annular groove 12.

The locking claw 30 of the present embodiment includes a claw portion 31 for locking the bolt 40, and a convex portion 32 connected to the claw portion 31 and adapted to engage with the spiral chute 22. The projection 32 is fitted into the spiral runner 22, and transmits the locking pawl 30 to the spiral runner 22, thereby converting the rotational motion of the spiral plate 20 into the linear motion of the locking pawl 30. In the present embodiment, the claw portion 31 has a rectangular block shape, and the convex portion 32 has a cylindrical shape.

At least two locking claws 30 are at equal radial distances from the center of the hollow sleeve 10; taking three locking claws 30 of the present embodiment as an example, namely, the three locking claws 30 are arranged such that the wall surfaces of the locking claws 30, which are close to the center of the hollow sleeve 10 and used for clamping the bolt 40, are equidistant from the central axis of the hollow sleeve 10, so that when the spiral disk 20 rotates, the locking claws 30 generate a constant-speed motion along the radial direction of the hollow sleeve 10, and the three locking claws 30 can simultaneously abut against the bolt 40 to lock the bolt 40.

In the present embodiment, a silent buffer layer (not shown in the drawings) is disposed on the inner wall of the through hole 11, so that when the locking claw 30 moves along the radial direction of the hollow sleeve 10, noise generated by relative friction between the outer wall of the locking claw 30 and the inner wall of the through hole 11 can be reduced, abrasion of the locking claw 30 and the hollow sleeve 10 can be avoided, and the service life of the product can be prolonged. In other embodiments, a silent buffer layer may also be provided on the outer wall of the locking pawl 30. The mute buffer layer can be a rubber layer, a silica gel layer or other elastic material layers.

in this embodiment, an anti-slip layer (not shown) is provided on the outer wall of the locking claw 30. Specifically, in the present embodiment, an anti-slip layer is provided on a wall surface of the locking claw 30 to which the bolt 40 is attached, so that when the locking claw is attached to the bolt 40, friction force between the locking claw and the bolt 40 is increased, and a locking effect is improved. The anti-slip layer can be a rubber layer, a silica gel layer or other elastic material layers, and can also be anti-slip lines arranged on the wall surface of the locking claw 30.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A disassembly and assembly tool, comprising: the locking device comprises a hollow sleeve, a spiral disc which is rotatably connected with the hollow sleeve and is arranged at the hollow part of the hollow sleeve, and at least two locking claws which are matched with the spiral disc; the hollow sleeve is provided with a through hole for penetrating the locking claw along the circumferential direction; the spiral disc is provided with a wrench matching part and a spiral sliding groove, and the locking claw is in sliding fit with the spiral sliding groove.

2. The assembly and disassembly tool of claim 1, wherein the helical runner is an archimedes spiral groove.

3. The assembly and disassembly tool of claim 1, wherein the number of the locking claws is three, and the three locking claws are evenly spaced along the circumferential direction of the hollow sleeve.

4. The disassembly and assembly tool of claim 1, wherein the wrench engaging portion is a connecting hole provided at the center of the spiral disc; the spiral sliding groove is arranged around the periphery of the connecting hole.

5. The assembly and disassembly tool of claim 4 wherein the attachment hole is a square hole.

6. The assembly and disassembly tool of claim 1 wherein the spiral disc is a disk structure and the hollow sleeve inner wall is provided with an annular groove that mates with the spiral disc.

7. The disassembly and assembly tool of claim 1, wherein the locking claw comprises a claw part for locking, and a convex part connected with the claw part and used for matching with the spiral sliding groove.

8. A break-out tool according to any of claims 1-7, ch a racterized i n that at least two of the locking claws are at equal radial distances from the centre of the hollow sleeve.

9. the disassembly and assembly tool of any one of claims 1-7, wherein the inner wall of the through hole is provided with a silent buffer layer.

10. A disassembly and assembly tool according to any of claims 1-7, wherein the outer wall of the locking claw is provided with a non-slip layer.