CN114810781A

CN114810781A - Thrust bolt for fixing plastic part

Info

Publication number: CN114810781A
Application number: CN202210416664.0A
Authority: CN
Inventors: 张明远; 张永昌; 杨雪峰; 任瑞坤
Original assignee: FAW Bestune Car Co Ltd
Current assignee: FAW Bestune Car Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-07-29

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a thrust bolt for fixing plastic parts. The device comprises a thrust structure, a cylinder, a gasket, external threads and a guide structure; the thrust structure, the cylinder, the external threads and the guide structure are integrally formed; the lower end of the cylinder is fixed with the thrust structure; the upper end of the cylinder is fixed with the lower end of the external thread; the upper end of the external thread is a guide structure; a gasket is arranged at the joint of the cylinder and the external thread; the thrust structure is in sliding fit with the groove of the plastic part; the thrust bolt is used for connecting the fixing support with the plastic part through a nut. The invention can avoid the plastic part from being damaged by the clamping force of the bolt, can allow the plastic part to have certain movement space after fixed assembly, is convenient for adjustment after assembly, and solves the problems that the part is easy to be damaged by the overlarge clamping force generated by threaded connection during assembly or the shaft force is seriously attenuated during use, and finally the part is loosened.

Description

Thrust bolt for fixing plastic part

Technical Field

The invention belongs to the technical field of automobiles, and particularly relates to a thrust bolt for fixing plastic parts.

Background

The connection fixing mode in the automobile is mainly in a thread form, the thread connection usually generates a large clamping force, the problem that the part loosens in the using process can be avoided, the excessive clamping force is not allowed to fix the individual part, for example, the plastic part is fixed, the excessive clamping force is very easy to clamp the part during assembly, or the axial force is seriously attenuated during use, and finally the part loosens.

Disclosure of Invention

The invention provides a thrust bolt for fixing a plastic part, which has a simple structure, can prevent the plastic part from being clamped by a clamping force of the bolt, can allow the plastic part to have a certain moving space after fixed assembly, is convenient to adjust after assembly, and solves the problems that the part is easily clamped by an overlarge clamping force generated by threaded connection during assembly, or the part is loosened due to serious attenuation of a shaft force during use.

The technical scheme of the invention is described as follows by combining the attached drawings:

a thrust bolt 9 for fixing a plastic part is used for connecting a plastic part 6 with a fixed support 7 and comprises a thrust structure 1, a cylinder 2, a gasket 3, an external thread 4 and a guide structure 5; the thrust structure 1, the cylinder 2, the external thread 4 and the guide structure 5 are integrally formed; the lower end of the cylinder 2 is fixed with the thrust structure 1; the upper end of the cylinder 2 is fixed with the lower end of the external thread 4; the upper end of the external thread 4 is provided with a guide structure 5; a gasket 3 is arranged at the joint of the cylinder 2 and the external thread 4; the thrust structure 1 is in sliding fit with the groove of the plastic part 6; the thrust bolt 9 connects the fixing bracket 7 with the plastic part 6 by means of a nut 8.

The lower end of the gasket 3 is in contact with the upper surface of the plastic part 6, and the upper end of the gasket is in contact with the lower surface of the fixed support 7.

The shim 3 is free to rotate.

The thrust structure 1 is rectangular.

The external thread 4 is provided with an external thread and a nut 8 in threaded connection.

The thickness of the groove of the plastic part 6 is H2, the height of the cylinder is H1, and when H2 is more than H1, the plastic part 6 has resistance relative to the sliding rod of the thrust bolt 9; when H2 < H1, the plastic part 6 slides freely relative to the thrust bolt 9 without resistance.

The invention has the beneficial effects that:

the invention can avoid the plastic part from being damaged by the clamping force of the bolt, can allow the plastic part to have certain movement space after fixed assembly, is convenient for adjustment after assembly, and solves the problems that the part is easy to be damaged by the overlarge clamping force generated by threaded connection during assembly or the shaft force is seriously attenuated during use, and finally the part is loosened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a top view of the present invention;

fig. 4 is a reference diagram of the use state of the present invention.

In the figure:

1. a thrust structure;

2. a cylinder;

3. a gasket;

4. an external thread;

5. a guide structure;

6. a plastic part;

7. fixing a bracket;

8. a nut;

9. a thrust bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 3, an embodiment of the present invention provides a thrust bolt for fixing plastic parts, which is used for connecting a plastic part 6 and a fixing bracket 7.

The thrust bolt 9 comprises a thrust structure 1, a cylinder 2, a gasket 3, external threads 4 and a guide structure 5.

The thrust structure 1, the cylinder 2, the external threads 4 and the guide structure 5 are formed in a cold heading mode; the lower end of the cylinder 2 is fixed with the thrust structure 1; the upper end of the cylinder 2 is fixed with the lower end of the external thread 4; the upper end of the external thread 4 is provided with a guide structure 5; a gasket 3 is arranged at the joint of the cylinder 2 and the external thread 4; the thrust structure 1 is in sliding fit with the groove of the plastic part 6; the thrust bolt 9 connects the fixing bracket 7 with the plastic part 6 by means of a nut 8.

Wherein the thrust structure 1 is rectangular.

The cylinder 2 is cylindrical and has a height H1. The cylinder 2 is limited to prevent the plastic part 6 from being damaged by clamping.

The gasket 3 is circular and can rotate freely, the lower end of the gasket is in contact with the upper surface of the plastic part 6, and the upper end of the gasket is in contact with the lower surface of the fixing support 7.

The external thread 4 is in threaded connection with a nut 8.

The guide structure 5 serves as a guide for adjusting the position of the fixing support 7.

The plastic part 6 is provided with a groove and can be matched with the sliding rod of the thrust structure 1, so that the fixed bracket 7 is driven to move; the groove thickness is H2.

When H2 is more than H1, the plastic part 6 has resistance against the sliding rod of the thrust bolt 9;

when H2 < H1, the plastic part 6 slides freely relative to the thrust bolt 9 without resistance.

The fixed support 7 is rectangular, is provided with a round hole and can penetrate through the external thread 4.

The nut 8 is used for tightly connecting the fixing bracket 7 with the plastic part 6.

Referring to fig. 4, the method of use of the present invention is as follows:

the fixing bracket 7 is slid back and forth into position in the groove of the plastic part 6 by the thrust structure 1, while the other degrees of freedom are limited. After reaching the proper position, the fixation is achieved by tightening the nut 8. Because the thrust structure is square, the thrust bolt 9 can not rotate, and meanwhile, the rotating shaft can not appear when the nut 8 is assembled. The fixed thrust bolt 9 is adjustable in one dimension with the plastic part 6.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications set forth in the specification and the examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims

1. The thrust bolt for fixing the plastic part is characterized in that a thrust bolt (9) is used for connecting a plastic part (6) and a fixing support (7) and comprises a thrust structure (1), a cylinder (2), a gasket (3), an external thread (4) and a guide structure (5); the thrust structure (1), the cylinder (2), the external thread (4) and the guide structure (5) are integrally formed; the lower end of the cylinder (2) is fixed with the thrust structure (1); the upper end of the cylinder (2) is fixed with the lower end of the external thread (4); the upper end of the external thread (4) is provided with a guide structure (5); a gasket (3) is arranged at the joint of the cylinder (2) and the external thread (4); the thrust structure (1) is in sliding fit with the groove of the plastic part (6); the thrust bolt (9) connects the fixed support (7) with the plastic part (6) through the nut (8).

2. The thrust bolt for fixing plastic parts according to claim 1, wherein the gasket (3) has a lower end contacting an upper surface of the plastic part (6) and an upper end contacting a lower surface of the fixing bracket (7).

3. Thrust bolt for the fixation of plastic parts, according to claim 1, characterized in that the washer (3) is freely rotatable.

4. Thrust bolt for fixing plastic parts, according to claim 1, characterized in that the thrust structure (1) is rectangular.

5. The thrust bolt for fixing plastic parts according to claim 1, wherein the external thread (4) is provided with an external thread for screwing with the nut (8).

6. A thrust bolt for fixing plastic parts according to claim 1, characterised in that the recess of the plastic part (6) has a thickness of H2 and the height of the cylinder is H1, so that when H2 > H1, the plastic part (6) has a resistance against the sliding rod of the thrust bolt (9); when H2 is less than H1, the plastic part (6) slides freely relative to the thrust bolt (9) without resistance.