CN216580434U

CN216580434U - Automatic spring loading device for steering wheel airbag support

Info

Publication number: CN216580434U
Application number: CN202122894246.6U
Authority: CN
Inventors: 郑轶群; 管清宇; 高文涛
Original assignee: Changchun Fokia Xuyang Auto Parts Technology Research And Development Co ltd
Current assignee: Changchun Fokia Xuyang Auto Parts Technology Research And Development Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-24
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses an automatic spring-loading device of a steering wheel air bag bracket, which comprises: frock mesa, gasbag fixed slot and outer sleeve, wherein, expanding spring contains: a main spring; the main spring is positioned in the through hole, and a blocking piece used for limiting the position of the spring is arranged on one side of the through hole; and a secondary spring; the auxiliary spring is installed at the top end of the main spring, and the elasticity of the auxiliary spring is smaller than that of the main spring. The automatic spring loading device for the steering wheel airbag support, provided by the utility model, has the advantages that firstly, the auxiliary spring is arranged at the top of the main spring, the force used for pressing the steering wheel in the early stage can be reduced, and when the steering wheel is pressed by force, larger resistance can be provided, so that the failure of the airbag in the steering wheel due to stress is avoided; secondly, set up the movable plate through the inside at outer sleeve to set up the stopper in the outside of slide, not only can adjust expanding spring's compressive strength, can also keep the expanding spring after the adjustment simultaneously.

Description

Automatic spring loading device for steering wheel airbag support

Technical Field

The utility model relates to a spring adjusting device, in particular to an automatic spring loading device for a steering wheel air bag bracket.

Background

The safety airbag is an important component of an automobile safety system, and is filled with harmless nitrogen during working, when an automobile collides and reaches a certain instantaneous speed, the nitrogen in the safety airbag is filled at a very high speed, so that when the body of a passenger is bound by a safety belt and the head of the passenger still moves forwards, the safety airbag can be in place in time, the passive safety of the automobile is obviously improved by using the safety airbag, and the safety airbag support is used as an important component of the airbag, so that the importance is self-evident.

At present, when an existing automobile runs and a driver presses a horn, an airbag is stressed to move up and down, an airbag support can do irregular reciprocating motion, and an airbag support spring can have risks of inclination, failure and even falling under the continuous stress action;

secondly, as patent numbers: CN 214325259U discloses: "an automatic spring loading device of steering wheel gasbag support", the expanding spring elasticity wherein is invariable, and when the steering wheel used, the user need constantly press, consequently, when the user pressed hard, expanding spring produced great shrink easily, triggered the gasbag of irritating the inside of steering wheel easily for the inside gasbag of steering wheel became invalid.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic spring-loading device for a steering wheel airbag bracket, which can reduce the force used for pressing a steering wheel in the early stage and can provide larger resistance when the steering wheel is pressed by force, thereby avoiding the failure of the airbag in the steering wheel caused by stress.

Another object of the present invention is to: the compression strength of the telescopic spring is adjusted, and the adjusted telescopic spring can be maintained, so that the elastic force of the spring is controlled within a specified range.

In order to achieve the above object, the present invention provides an automatic spring-loading device for a steering wheel airbag bracket, the device comprising:

the top of the tool table top is provided with an annular bracket, and a protective cover covers the tool table top;

the air bag fixing groove is formed in the center of the top of the tool table board, and an air bag is filled in the air bag fixing groove; and

the outer sleeve is mounted at the bottom of the tooling table board, a through hole is formed in the tooling table board close to the outer sleeve, a telescopic spring used for bouncing the air bag is mounted inside the outer sleeve, and a connecting plate is mounted at the bottom of the outer sleeve;

wherein, the expanding spring includes:

a main spring; the main spring is positioned in the through hole, and a blocking piece used for limiting the position of the spring is arranged on one side of the through hole; and

a secondary spring; the auxiliary spring is installed at the top end of the main spring, and the elasticity of the auxiliary spring is smaller than that of the main spring.

In one or more embodiments, the outer wall of the bracket is provided with a gas distribution box, and the gas distribution box is communicated with the bottom end of the airbag fixing groove through a gas pipe.

In one or more embodiments, both ends of the blocking piece are connected with the inner wall of the through hole, and the outer wall of the spring is attached to the inner wall of the through hole.

In one or more embodiments, the top of frock mesa is installed the guide post, the sleeve of butt joint with the guide post is installed to the bottom of protective cover.

In one or more embodiments, an adjusting component for adjusting the elastic force of the extension spring is inserted into the outer sleeve,

the adjusting assembly comprises a disc-shaped movable sheet and an extension cylinder arranged at the bottom of the movable sheet, an inserted rod is inserted into the bottom of the extension cylinder, and a rotating disc is arranged at the bottom of the inserted rod.

In one or more embodiments, the rotating disc and the connecting plate are connected through a bearing.

In one or more embodiments, the adjusting component further comprises two sets of limiting blocks, the two sets of limiting blocks are connected with the two ends of the movable piece through hinges respectively, and the bottoms of the limiting blocks are connected with the bottom of the movable piece through elastic pieces.

In one or more embodiments, the outer sleeve is provided with sliding grooves extending up and down on two sides, and the sliding grooves correspond to the limiting blocks.

Compared with the prior art, the auxiliary spring is arranged at the top of the main spring, so that the force for pressing the steering wheel at the early stage can be reduced, and when the steering wheel is pressed with force, larger resistance can be provided, and the failure of the air bag in the steering wheel due to stress is avoided;

secondly, set up the movable plate through the inside at outer sleeve to set up the stopper in the outside of slide, not only can adjust expanding spring's compressive strength, can also keep the expanding spring after the adjustment simultaneously.

Drawings

FIG. 1 is an overall block diagram according to an embodiment of the present invention;

FIG. 2 is a top view of a tooling table according to one embodiment of the present invention;

FIG. 3 is a bottom block diagram of a tooling table according to one embodiment of the present invention;

FIG. 4 is a block diagram of an outer sleeve and a telescoping spring according to one embodiment of the utility model;

FIG. 5 is one of the block diagrams of an adjustment assembly according to an embodiment of the utility model;

FIG. 6 is a second block diagram of an adjustment assembly according to an embodiment of the present invention;

FIG. 7 is a partial cross-sectional view of a movable plate and a stopper according to an embodiment of the present invention.

Illustration of the drawings: 1. a tooling table surface; 2. a bracket; 3. a protective cover; 4. an air bag fixing groove; 5. an outer sleeve; 6. a connecting plate; 7. a tension spring; 8. an adjustment assembly; 81. a movable plate; 82. a limiting block; 83. an extension cylinder; 84. inserting a rod; 85. rotating the disc; 86. an elastic sheet.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Example one

Referring to fig. 1 to 4, an automatic spring-loading apparatus of a steering wheel airbag bracket according to an embodiment of the present invention includes:

the top of the tool table top 1 is provided with an annular bracket 2, and a protective cover 3 is covered above the tool table top 1;

the air bag fixing groove 4 is formed in the center of the top of the tooling table board 1, and an air bag is filled in the air bag fixing groove 4; and

the outer sleeve 5 is mounted at the bottom of the tooling table board 1, a through hole is formed in the tooling table board 1 close to the outer sleeve 5, an expansion spring 7 for bouncing up the air bag is mounted in the outer sleeve 5, and a connecting plate 6 is mounted at the bottom of the outer sleeve 5;

wherein, the extension spring 7 includes:

a secondary spring; the auxiliary spring is arranged at the top end of the main spring, and the elasticity of the auxiliary spring is smaller than that of the main spring.

Referring to fig. 2, an air distribution box is installed on the outer wall of the bracket 2, and is communicated with the bottom end of the airbag fixing groove 4 through an air pipe.

Through the outer wall installation gas distribution box at bracket 2, and the gas distribution box passes through the trachea and communicates with the bottom of gasbag fixed slot 4, and the gas distribution box of being convenient for aerifys the air bag in gasbag fixed slot 4 through the trachea, has improved the practicality of device.

Referring to fig. 4, both ends of the blocking piece are connected to the inner wall of the through hole, and the outer wall of the spring is attached to the inner wall of the through hole.

Through the inner wall connection separation blade at the through-hole, when expanding spring 7 atress is tensile or pushes down, can prevent its top to remove to guarantee the stability of expanding spring 7 work, secondly, can also cooperate with movable plate 81, adjust the number of turns of spring between separation blade and the protective cover 3, make the elasticity of spring change.

Referring to fig. 1, a guide post is installed at the top of the tooling table top 1, and a sleeve butted with the guide post is installed at the bottom of the protective cover 3.

Through the top installation guide post at tool table face 1, the sleeve of docking with the guide post is installed to the bottom of protective cover 3, can make protective cover 3 correspond from top to bottom with tool table face 1, prevents that it from taking place the skew.

When the steering wheel is pressed, the auxiliary spring contact at steering wheel and main spring top, and the elasticity of auxiliary spring is less than main spring's elasticity, consequently when the steering wheel is pressed, the elasticity that the steering wheel received is less, thereby reduce the degree of difficulty that the steering wheel pressed (need not press too big strength alright with triggering), and when the power is pressed the steering wheel, the auxiliary spring is extrudeed and is fully contracted, steering wheel and main spring contact this moment, the main spring provides great reaction force to the steering wheel, thereby avoid the inside gasbag atress of steering wheel to take place to lose efficacy.

Example two

Referring to fig. 2 and 5-7, an adjusting assembly 8 for adjusting the elastic force of the extension spring 7 is inserted into the outer sleeve 5,

the adjusting assembly 8 includes a disc-shaped movable plate 81 and an extending cylinder 83 mounted at the bottom of the movable plate 81, an inserting rod 84 is inserted into the bottom of the extending cylinder 83, and a rotating disc 85 is mounted at the bottom of the inserting rod 84.

Referring to fig. 3, the rotating disc 85 is connected to the connecting plate 6 through a bearing.

The rotating disc 85 is connected with the connecting plate 6 through a bearing, and the rotating disc 85 can be rotated to drive the movable sheet 81 to rotate, so that the spring is inserted between the blocking sheet and the protective cover.

Referring to fig. 6 and 7, the adjusting assembly 8 further includes two sets of limiting blocks 82, the two sets of limiting blocks 82 are connected to two ends of the movable piece 81 through hinges, and the bottoms of the limiting blocks 82 and the bottoms of the movable pieces 81 are connected through elastic pieces 86.

Through set up the movable plate 81 in the inside of outer sleeve 5 to set up stopper 82 in the outside of slide, not only can adjust the compressive strength of expanding spring 7, can also keep the expanding spring 7 after the adjustment simultaneously.

Referring to fig. 4, the two sides of the outer sleeve 5 are both provided with sliding grooves extending up and down, and the sliding grooves correspond to the position of the limiting block 82.

Through all offering the spout that extends from top to bottom in the both sides of outer sleeve 5, and the spout corresponds with stopper 82 position, makes things convenient for stopper 82 to correspond the cooperation with the spout, prevents that movable piece 81 from taking place to rotate.

When the pressure of the telescopic spring 7 needs to be adjusted, the limiting blocks 82 on two sides of the movable piece 81 are pressed firstly, the limiting blocks 82 are retracted downwards to form the shape shown in fig. 6, the rotating disk 85 at the bottom of the connecting plate 6 is pressed through rotation, the rotating disk drives the insertion rod 84 and the extension cylinder 83 inserted with the insertion rod 84 to rotate together, the top of the movable piece 81 is connected with the bottom of the telescopic spring 7, the telescopic spring 7 can be driven to rotate together with the rotating disk 85 when the rotating disk 85 rotates, the telescopic spring 7 rotates around the separation blade at the moment, the length of the telescopic spring 7 between the protective cover 3 and the separation blade is increased, the distance between the steering wheel and the separation blade is inconvenient, the telescopic spring 7 between the steering wheel and the separation blade is extruded at the moment, the elasticity is increased, and the counterforce size of the steering wheel during pressing is convenient to adjust according to needs.

After the distance adjustment of the telescopic spring 7 is completed, the limiting block 82 is loosened, so that the limiting block 82 is outwards bounced under the action of the elastic sheet 86 between the limiting block 82 and the movable sheet 81 to form the shape shown in fig. 5, meanwhile, the limiting block 82 is inserted into the sliding groove in the outer part of the outer sleeve 5, at the moment, the movable sheet 81 cannot rotate, the position of the telescopic spring 7 after adjustment is kept, and the elastic force of the telescopic spring is prevented from changing.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. An automatic spring-loading device for a steering wheel airbag support, comprising:

the tool table top (1), wherein the top of the tool table top (1) is provided with an annular bracket (2), and a protective cover (3) is covered above the tool table top (1);

the air bag fixing groove (4) is formed in the center of the top of the tool table top (1), and an air bag is filled in the air bag fixing groove (4); and

the air bag lifting device comprises an outer sleeve (5), wherein the outer sleeve (5) is installed at the bottom of a tooling table top (1), a through hole is formed in the position, close to the outer sleeve (5), of the tooling table top (1), a telescopic spring (7) used for bouncing the air bag is installed inside the outer sleeve (5), and a connecting plate (6) is installed at the bottom of the outer sleeve (5);

wherein the extension spring (7) comprises:

a main spring; the main spring is positioned in the through hole, and a baffle plate used for limiting the position of the spring is arranged on one side of the through hole; and

an auxiliary spring; the auxiliary spring is installed at the top end of the main spring, and the elasticity of the auxiliary spring is smaller than that of the main spring.

2. The automatic spring-loading device for an airbag bracket for a steering wheel as claimed in claim 1, wherein a distribution box is installed at an outer wall of the bracket (2), and the distribution box is communicated with the bottom end of the airbag fixing groove (4) through an air tube.

3. The automatic spring-loading device for an air bag bracket for a steering wheel according to claim 1, wherein both ends of the blocking piece are connected to the inner wall of the through hole, and the outer wall of the spring is attached to the inner wall of the through hole.

4. The automatic spring-loading device for the steering wheel airbag bracket as claimed in claim 1, wherein a guide post is installed on the top of the tooling table top (1), and a sleeve abutting against the guide post is installed on the bottom of the protective cover (3).

5. An automatic spring-loading device for a steering wheel airbag support according to claim 1, characterized in that an adjusting assembly (8) for adjusting the spring force of the extension spring (7) is inserted into the outer sleeve (5),

the adjusting assembly (8) comprises a disc-shaped movable sheet (81) and an extension cylinder (83) arranged at the bottom of the movable sheet (81), an insertion rod (84) is inserted into the bottom of the extension cylinder (83), and a rotating disc (85) is arranged at the bottom of the insertion rod (84).

6. An automatic spring-loading device for a steering wheel air bag bracket according to claim 5, characterized in that the rotating disc (85) is connected with the connecting plate (6) through a bearing.

7. The automatic spring-loading device of the steering wheel airbag bracket according to claim 5, wherein the adjusting assembly (8) further comprises two groups of limiting blocks (82), the two groups of limiting blocks (82) are respectively connected with two ends of the movable plate (81) through hinges, and the bottoms of the limiting blocks (82) and the bottoms of the movable plates (81) are connected through spring sheets (86).

8. The automatic spring-loading device for the steering wheel airbag bracket according to claim 7, wherein the outer sleeve (5) is provided with sliding grooves extending up and down on both sides, and the sliding grooves correspond to the position of the limiting block (82).