CN219673054U

CN219673054U - Locking structure of long bolt and battery module

Info

Publication number: CN219673054U
Application number: CN202320405412.8U
Authority: CN
Inventors: 王雪春
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-09-12
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a long bolt anti-loosening structure and a battery module. The long bolt anti-loosening structure is arranged on the fastening bracket, an end plate for the long bolt anti-loosening structure to penetrate through is arranged on the fastening bracket, a plurality of long bolts penetrate through the whole fastening bracket, the gasket comprises a gasket body and a clamping block extending outwards along the radial direction of the gasket body, and an embedded hole corresponding to the clamping block is formed in the fastening bracket; the gasket is also provided with a plurality of insertion blocks extending along the direction of the fastening bracket, the insertion blocks are arranged between the end plate and the long screw, and the outer surface of the long screw is provided with grooves matched with the insertion blocks; the long screw rod is a variable-diameter screw rod, and the diameter of the long screw rod corresponding to the fastening nut is smaller than that of the long screw rod corresponding to the insertion block. Through setting up the cooperation of a plurality of inserts and reducing screw, the cooperation of fixture block and embedded hole in addition for at the fastening in-process, can restrict reducing screw and make it fixed, make fastening nut can conveniently screw up, prevent that fastening nut from becoming flexible.

Description

Locking structure of long bolt and battery module

Technical Field

The utility model belongs to the field of machine manufacturing, and particularly relates to a long bolt anti-loosening structure and a battery module.

Background

At present, in the field of mechanical manufacturing, a large number of long bolt connecting structures are adopted, and at present, a locking mode basically adopts a mode of fastening two ends of a long bolt and a fastening nut. On the one hand, the long screw is longer, so that the length of the fastening point is too long in the process of screwing the two ends, and the long screw is easy to generate larger torque to cause deformation; on the other hand, in order to avoid the long screw from rotating all the time in the fastening process, the long screw needs to be manually fixed at the other end, which is time-consuming and labor-consuming.

The utility model patent of China with the publication number CN106194968A discloses an automobile long bolt and nut connection anti-loosening structure, which comprises a long bolt, a bracket body, a gasket and a nut, wherein the long bolt is provided with a long screw rod with threads, and a notch is formed in the end part of the long screw rod; the gasket is provided with a mounting hole matched with the long screw rod provided with the notch, and the bracket body is provided with a through hole through which the long screw rod can pass; the long screw rod is fixedly connected with the nut through the through hole on the bracket body and the mounting hole on the gasket in sequence; and a jogged anti-rotation structure is formed between the gasket and the bracket body. However, in this solution, the thread of the long screw corresponding to the nut is not a complete circle, and is easy to loosen in the subsequent use process.

Therefore, a new long bolt fastening anti-torsion structure is needed to solve the problem that nuts are easy to loosen in the subsequent use process of the anti-loosening structure.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a long bolt anti-loosening structure and a battery module, and solves the problem that nuts are easy to loosen in the prior art.

The utility model provides a long bolt anti-loosening structure, which is arranged on a fastening bracket, wherein an end plate for the long bolt anti-loosening structure to penetrate through is arranged on the fastening bracket, and the long bolt anti-loosening structure comprises a long bolt, a fastening nut and a gasket;

the long bolts penetrate through the whole fastening bracket, the gasket comprises a gasket body and a clamping block extending outwards along the radial direction of the gasket body, and the fastening bracket is provided with an embedded hole corresponding to the clamping block;

the gasket is also provided with a plurality of insertion blocks extending along the direction of the fastening bracket, the insertion blocks are arranged between the end plate and the long screw, and the outer surface of the long screw is provided with grooves matched with the insertion blocks;

the long screw rod is a variable-diameter screw rod, and the diameter of the long screw rod corresponding to the fastening nut is smaller than that of the long screw rod corresponding to the insertion block.

Further, the clamping block is L-shaped and comprises a first clamping block part connected with the gasket body and a second clamping block part matched with the embedded hole.

Further, the clamping block, the inserting block and the gasket body are integrally formed.

Further, the number of the clamping blocks is 2, and the clamping blocks are symmetrically arranged along the gasket body.

Further, the long screw comprises a first long screw portion corresponding to the fastening nut, a second long screw portion corresponding to the insertion block, and a third long screw portion far away from the fastening nut, wherein a groove is formed in the upper surface of the second long screw portion, and the length of the groove is larger than that of the insertion block.

Further, the number of the insertion blocks is 2, and the insertion blocks are symmetrically arranged along the gasket body.

Further, the included angle between the center of the insertion block and the center of the clamping block is 90 degrees.

Further, the shape of the insertion block is cuboid, the surface of the groove is also plane, and the width of the groove is larger than that of the insertion block.

The utility model also provides a battery module, which comprises the long bolt anti-loosening structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the plurality of insertion blocks are arranged, and the clamping blocks are matched with the variable-diameter screw rod, so that the variable-diameter screw rod can be limited to be fixed in the fastening process, and the fastening nut can be conveniently screwed. Therefore, the problem that the long screw is deformed due to the fact that a large torque is generated as the long screw rotates all the time in the fastening process can be prevented; the surface threads of the corresponding long screw rod at the fastening nut can be ensured not to be lost, and the fastening nut is prevented from loosening;

2. the clamping blocks and the inserting blocks on the gasket are arranged in a staggered and symmetrical mode, so that the stress of the long screw rod can be more uniform, and the fastening effect is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a battery module according to the present utility model;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;

FIG. 3 is a first partial longitudinal cross sectional view of the long bolt-tightening torque-proof structure of the present utility model;

FIG. 4 is a second partial longitudinal cross sectional view of the long bolt-tightening torque-proof structure of the present utility model;

FIG. 5 is a schematic perspective view of a gasket structure of the present utility model;

FIG. 6 is a partial perspective view of the structure of the long screw of the present utility model.

Reference numerals: 1. a battery module; 11. an end plate; 111. an insertion hole; 12. a module assembly; 2. a long bolt; 21. a long screw; 211. a first long screw portion; 212. a second long screw portion; 213. a third long screw section; 22. a groove; 3. a fastening nut; 4. a gasket; 41. a gasket body; 42. a clamping block; 421. a first clamping block part; 422. a second clamping block part; 43. the block is inserted.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is made to the following examples which are described in detail below with reference to the drawings.

Referring to fig. 1 to 6, the present embodiment discloses a battery module, which includes a long bolt locking structure, and is applied to the fastening connection of the battery module, and is disposed on a battery module 1. The battery module 1 is provided with end plates 11 at both ends thereof, and further comprises a module assembly 12 between the two end plates 11. The battery module can also be a fastening bracket which needs to be fixed by a long screw in the mechanical field, and the fastening bracket is provided with an end plate for the long screw to pass through.

In this embodiment, as shown in fig. 1 to 4, the long bolt anti-loosening structure includes a long bolt 2, wherein the long bolt 2 includes a screw head and a long screw 21, and further includes a fastening nut 3 and a washer 4.

In this embodiment, as shown in fig. 1, eight long bolts 2 vertically symmetrically penetrate through the end plates 11 at both ends of the whole battery module 1, the gasket 4 includes a gasket body 41 and a clamping block 42 extending radially outwards along the gasket body 41, and the battery module 1 is provided with insertion holes 111 corresponding to the clamping block 42, although the number of the long bolts 2 can take other values except eight according to practical situations.

In this embodiment, as shown in fig. 2, two insertion blocks 43 extending along the direction of the battery module 1 are further disposed on the gasket 4, the insertion blocks 43 are disposed between the end plate 11 and the long screw 21, and the outer surface of the long screw 21 is provided with a groove 22 adapted to the insertion blocks 43.

In this embodiment, as shown in fig. 6, the long screw 21 is a reducing screw, which includes a first long screw portion 211 corresponding to the fastening nut 3, a second long screw portion 212 corresponding to the insertion block 43, and a third long screw portion 213 far away from the fastening nut 3, where a groove 22 is provided on an upper surface of the second long screw portion 212, and the length of the groove 22 is greater than that of the insertion block 43, so that the insertion block 43 is convenient to be put in. The diameter of the first long screw portion 211 is smaller than that of the other two long screw portions, and the washers 4 are conveniently and rapidly installed through the arrangement of different diameters, so that the washers are tightly attached to the end plate 11.

The utility model, by arranging a plurality of insertion blocks 43, and by matching with the reducing screw 21, and matching between the clamping block 42 and the embedded hole 111, can limit the reducing screw 21 to be fixed in the fastening process, so that the fastening nut 3 can be conveniently screwed. Therefore, the problem that the long screw is deformed due to the fact that a large torque is generated as the long screw rotates all the time in the fastening process can be prevented; but also can ensure that the surface threads of the fastening nut corresponding to the long screw rod are not lost, and prevent the fastening nut from loosening.

In this embodiment, preferably, as shown in fig. 4, the latch 42 has an L-shape including a first latch portion 421 connected to the gasket body 41 and a second latch portion 422 engaged with the insertion hole 111, wherein the second latch portion 422 is inserted into the insertion hole 111 so that the gasket 4 as a whole can be fixed to the end plate 11. In this embodiment, the clamping block 42, the insertion block 43 and the gasket body 41 are integrally formed, which is convenient for manufacturing. Of course, the manufacturing can also be performed by adopting a welding mode.

In this embodiment, as shown in fig. 5, the number of the clamping blocks 42 is 2, and the clamping blocks are symmetrically arranged along the gasket body 41, so that the overall stress is more uniform, and of course, 4 cases can be adopted according to actual situations. The number of the insertion blocks 43 is 2, the insertion blocks are symmetrically arranged along the gasket body 41, the number of the corresponding grooves 22 is also 2, and of course, the number of the insertion blocks 43 and the grooves 22 can be kept consistent according to the actual situation by adopting 4 cases. The insert 43 is rectangular, and when it is assembled in place, its lower end abuts against the surface of the recess 22, the surface of the recess 22 is also plane, the width of the recess 22 is 2mm greater than the width of the insert 43, and other values can be adopted according to actual needs. In addition, the shape of the insertion block 43 may be arc-shaped, and the surface corresponding to the groove 22 may be arc-shaped. The clamping blocks 42 and the inserting blocks 43 on the gasket 4 are arranged in a staggered and symmetrical mode, and the fastening effect is further improved. The present utility model may be manufactured by integrally molding the gasket 4 and the end plate 11.

In this embodiment, preferably, as shown in fig. 5, the included angle between the center of the insertion block 43 and the center of the clamping block 42 is 90 °, so that the long screw 21 is stressed more uniformly and better.

The utility model relates to a battery module, wherein a long bolt anti-loosening structure is specifically installed as follows:

1) Firstly, eight long bolts 2 penetrate through two end plates 11 of a battery module 1 and a module assembly 12 positioned in the battery module 1, so that the two end plates 11 and the module assembly 12 are preliminarily fixed by eight long screws 21;

2) Then one of the long bolt locking structures is fastened, two second clamping block parts 422 of the gasket 4 are respectively correspondingly inserted into the left and right embedded holes 111 of the end plate 11, the long screw rod 21 is rotated at the same time, the positions of the grooves 22 of the long screw rod 21 are consistent with the positions of the inserted blocks 43 of the gasket 4, the inserted blocks 43 are inserted forwards, and the long screw rod 21 and the gasket 4 do not rotate relatively;

3) The fastening nut 3 is then inserted from the first long screw portion 211 so as to be tightly attached to the end plate 11, and finally the fastening nut 3 is fastened by using a torque wrench, and then the other seven long bolt locking structures are fastened in order according to the above steps.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a long bolt locking structure, its setting is on the fastening support, be provided with the end plate that supplies long bolt locking structure to pass on the fastening support, its characterized in that: comprises a long bolt, a fastening nut and a gasket;

2. The long bolt locking structure according to claim 1, wherein: the clamping block is L-shaped and comprises a first clamping block part connected with the gasket body and a second clamping block part matched with the embedded hole.

3. The long bolt locking structure according to claim 2, wherein: the clamping block, the inserting block and the gasket body are integrally formed.

4. The long bolt locking structure according to claim 1, wherein: the number of the clamping blocks is 2, and the clamping blocks are symmetrically arranged along the gasket body.

5. The long bolt locking structure according to claim 1, wherein: the long screw rod comprises a first long screw rod portion corresponding to the fastening nut, a second long screw rod portion corresponding to the insertion block, and a third long screw rod portion far away from the fastening nut, wherein a groove is formed in the upper surface of the second long screw rod portion, and the length of the groove is larger than that of the insertion block.

6. The long bolt locking structure according to claim 5, wherein: the number of the insertion blocks is 2, and the insertion blocks are symmetrically arranged along the gasket body.

7. The long bolt locking structure according to any one of claims 4 or 6, wherein: the included angle between the center of the insertion block and the center of the clamping block is 90 degrees.

8. The long bolt locking structure according to claim 1, wherein: the shape of the insertion block is cuboid, the surface of the groove is also a plane, and the width of the groove is larger than that of the insertion block.

9. A battery module comprising the long bolt locking structure according to any one of claims 1 to 8.