CN110939647A

CN110939647A - Self-locking gasket for preventing hinge pin from falling down

Info

Publication number: CN110939647A
Application number: CN201911329458.0A
Authority: CN
Inventors: 王玮; 席艳秋; 周伟
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-31

Abstract

The invention provides a self-locking gasket for preventing a hinge pin shaft from falling down, which can prevent the hinge pin shaft from falling down when the hinge pin shaft is stressed and slipped, and avoid influencing the matching effect between a trunk lid and a side wall. The self-locking washer comprises a washer body and is characterized in that the side shoulder of the washer body is provided with a sharp part to form a self-locking cutting edge. The self-locking washer for preventing the hinge pin shaft from falling off is arranged on the contact surface of the hinge pin shaft and the bent pipe when in use, and then the fixing nut of the hinge shaft is screwed to the required torque range; after the fixed nut is screwed up, the auto-lock blade that the sharp portion of auto-lock packing ring formed can pierce the panel beating material thickly, realizes the auto-lock, plays anti-skidding effect to avoid the condition that the hinge pin axle appears falling down when the atress skids, avoid influencing the matching effect between luggage-boot lid and the side wall, improve product quality and life.

Description

Self-locking gasket for preventing hinge pin from falling down

Technical Field

The invention relates to the technical field of automobile parts, in particular to a self-locking gasket for preventing a hinge pin shaft from falling down.

Background

When the trunk lid of the three-compartment car is connected and matched with the car body through the hinge, in order to meet the requirement of matching the trunk lid in three directions conveniently, the base at the hinge pin shaft position and the bent pipe are connected through the bushing pin shaft, and generally, the base is designed into an elliptical hole with the adjustable quantity of 3.5mm in the Z direction, as shown in fig. 1.

Because the hinge pin is a nut screwing structure, in order to ensure the target requirement of the opening and closing performance of a trunk lid system on the rotating torque of the shaft part of the hinge pin, only the screwing torque of the mounting nut of the hinge pin can be set within the range of 9-13 N.m, and the torque range is not enough to firmly fix the hinge pin at the required position of the Z direction under the working condition that the lid is opened or subjected to the torsion bar force in a welding workshop; the position deviation of the hinge pin shaft of the trunk lid in the Z direction causes that the matching of the trunk lid and the vehicle body can not achieve the expected effect, and the target requirement of the general assembly on the DTS definition of the trunk lid system is influenced;

in view of the above problems, it is very necessary to solve the problem of Z-direction position deviation of the hinge pin of the trunk lid under the instant stress.

Disclosure of Invention

The invention aims to provide a self-locking gasket for preventing a hinge pin shaft from falling down, which can prevent the hinge pin shaft from falling down when the hinge pin shaft is stressed and slipped, and avoid influencing the matching effect between a trunk lid and a side wall.

The self-locking gasket for preventing the hinge pin shaft from falling down comprises a gasket body, and is characterized in that the side shoulder of the gasket body is provided with a sharp part to form a self-locking cutting edge.

The self-locking washer for preventing the hinge pin shaft from falling off is arranged on the contact surface of the hinge pin shaft and the bent pipe when in use, and then the fixing nut of the hinge shaft is screwed to the required torque range; after the fixed nut is screwed up, the auto-lock blade that the sharp portion of auto-lock packing ring formed can pierce the panel beating material thickly, realizes the auto-lock, plays anti-skidding effect to avoid the condition that the hinge pin axle appears falling down when the atress skids, avoid influencing the matching effect between luggage-boot lid and the side wall, improve product quality and life.

Furthermore, the sharp-pointed part is fixed on the gasket body by adopting a cold heading process, so that the manufacturing difficulty and the manufacturing cost of the self-locking gasket can be reduced on the premise of ensuring the locking effect.

Preferably, the sharp part is a triangular block, and the self-locking cutting edge is a corner protruded from the triangular block. Compare the sharp-pointed part of other shapes, the sharp-pointed part of triangle-shaped form can prevent more effectively that blade department from taking place the bending failure, guarantees the auto-lock effect.

Further, as another embodiment, the sharp portion is formed by die cutting the gasket body.

Furthermore, the sharp-pointed parts are arranged in a plurality of circumferential directions of the gasket body, so that a stronger self-locking effect can be provided.

Further, in order to ensure rigidity, the gasket body and the sharp portion are processed by a carburizing and quenching process.

Preferably, the gasket body and the sharp part are both made of cold-rolled carbon steel.

Drawings

Fig. 1 is a schematic view of a mounting hole structure of a base at a hinge pin shaft part and a bent pipe connected through a bushing pin shaft.

Fig. 2 is a functional schematic diagram of the self-locking structure of the invention.

Fig. 3 is an exploded view of the present invention at the hinge assembly.

Fig. 4 is a view showing the construction of the assembly position of the present invention.

Fig. 5 is a schematic view of the assembly structure of the present invention.

FIG. 6 is a schematic view of a three-coordinate axial position of the present invention.

FIG. 7 is a table of the effects of the present invention.

In which the figures are as follows: 1. a gasket body; 11. a sharp portion; 2. a hinge pin shaft; 3. bending the pipe; 4. fixing a nut; 5. a base; 6. a bushing.

Detailed Description

The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.

Referring to fig. 2-7, the self-locking washer for preventing the hinge pin shaft from falling comprises a washer body 1, wherein a sharp part 11 is arranged on the side shoulder of the washer body 1 to form a self-locking cutting edge.

The self-locking washer for preventing the hinge pin shaft from falling off is arranged on the contact surface of the hinge pin shaft 2 and the bent pipe 3 when in use, and then the fixing nut 4 of the hinge shaft 2 is screwed to the required torque range; after the fixing nut 4 is screwed up, the self-locking cutting edge formed at the top end of the sharp-pointed part 11 of the self-locking gasket can be penetrated into the metal plate to be thick, so that self-locking is realized, and an anti-skidding effect is achieved, so that the condition that the hinge pin shaft 2 falls when stressed in slipping is avoided, the matching effect between the trunk cover and the side wall is avoided being influenced, and the product quality and the service life are improved. The hinge pin shaft 2 and the elbow 3 are mounted on the base 5, and the hinge pin shaft 2 further comprises a bushing 6.

As a preferred embodiment, the sharp part 11 is fixed on the washer body 1 by a cold heading process, so that the manufacturing difficulty and the manufacturing cost of the self-locking washer can be reduced on the premise of ensuring the locking effect.

Preferably, the sharp part 11 is a triangular block, and the self-locking cutting edge is a corner protruded from the triangular block. Compare the sharp-pointed part of other shapes, the sharp-pointed part 11 of triangle-shaped form can prevent more effectively that blade department from taking place the bending failure, guarantees the auto-lock effect.

Preferably, the plurality of sharp-pointed portions 11 are arranged along the circumferential direction of the gasket body, so that a stronger self-locking effect can be provided.

Preferably, in order to ensure rigidity, the gasket body 1 and the sharp portion 11 are processed by a carburizing and quenching process.

Preferably, the gasket body 1 and the sharp portion 11 are both made of cold rolled carbon steel.

Fig. 6 shows a three-coordinate axial position P including the Z direction in the present invention. As shown in fig. 7, the verification scheme and the verification result of the effect before and after the use of the present invention are shown, it is obvious that after the use of the present invention, the deviation of the hinge pin shaft of the trunk lid in the Z direction is relatively reduced in various states, and the matching quality is ensured.

The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The self-locking gasket for preventing the hinge pin from falling down comprises a gasket body and is characterized in that a sharp part is arranged on the side shoulder of the gasket body to form a self-locking cutting edge.

2. The self-locking washer for preventing a hinge pin from falling down as claimed in claim 1, wherein the sharp portion is fixed on the washer body by a cold heading process.

3. The self-locking washer for preventing a hinge pin from falling down as claimed in claim 2, wherein the sharp portion is a triangular block, and the self-locking cutting edge is a corner of the triangular block which protrudes.

4. The self-locking washer for preventing hinge pin from falling down as claimed in claim 1, wherein said sharp portion is formed by die-cutting said washer body.

5. The self-locking washer for preventing hinge pin from falling down as claimed in claim 1, 2, 3 or 4, wherein the sharp portion is provided in plurality in a circumferential direction of the washer body.

6. The self-locking washer for preventing hinge pin from falling down as claimed in claim 5, wherein the washer body and the sharp portion are processed by a carburizing and quenching process.

7. The self-locking washer for preventing the hinge pin from falling down as claimed in claim 6, wherein the washer body and the sharp portion are both made of cold-rolled carbon steel.