Steering wheel horn mechanism

Abstract

The utility model provides a steering wheel horn mechanism which comprises a steering wheel framework, a metal plate support and a plurality of fastening assemblies, and the steering wheel framework is connected with the metal plate support through the fastening assemblies. Each fastening assembly comprises a guide column piece, a gasket, a guide sleeve piece and a spring, the guide column pieces penetrate through the metal plate support and are fixedly connected with the steering wheel framework, the gaskets are arranged outside the guide column pieces in a sleeving mode and located between the head ends of the guide column pieces and the metal plate support, and the guide sleeve pieces are arranged outside the guide column pieces in a sleeving mode and located between the metal plate support and the steering wheel framework. The top end of the guide sleeve is fixedly connected with the metal plate support, the guide sleeve is sleeved with the spring, the top end of the spring abuts against the guide sleeve, and the bottom end of the spring abuts against the steering wheel framework. Stable connection between the metal plate support and the steering wheel framework is achieved through the fastening assembly composed of the guide column piece, the gasket, the guide sleeve piece and the spring, and stable relative displacement between the metal plate support and the steering wheel framework is guaranteed through sliding fit of the guide sleeve piece and the guide column piece.

Description

Technical Field

[0001] The utility model relates to a steering wheel, in particular to a horn mechanism of a steering wheel, belonging to the technical field of automobile steering wheels. Background Art

[0002] The steering wheel is one of the important control devices of vehicles such as automobiles. It is usually arranged in a steering system and is used to maintain and change the traveling direction of wheels. To facilitate the operation of the driver, the steering wheel is usually provided with a matching horn mechanism, and the horn component is generally arranged on the steering wheel skeleton through a sheet metal bracket. The traditional steering wheel skeleton and the sheet metal bracket usually adopt a connection method in which multiple parts are connected by fasteners and springs. The fasteners are usually single components. Such a connection method makes it difficult to ensure the connection strength and stability between the steering wheel skeleton and the sheet metal bracket. Moreover, when pressing the sheet metal bracket to make it close to the steering wheel skeleton, the displacement smoothness and controllability of the sheet metal bracket relative to the steering wheel skeleton also need to be improved. Content of the Utility Model

[0003] Based on the above background, the purpose of the utility model is to provide a horn mechanism of a steering wheel to solve the problems described in the background art.

[0004] To achieve the above utility model purpose, the utility model provides the following technical solutions:

[0005] A horn mechanism of a steering wheel includes a steering wheel skeleton, a sheet metal bracket and a plurality of fastening components. The steering wheel skeleton is connected to the sheet metal bracket through the plurality of fastening components; the steering wheel skeleton is provided with at least one lower contact; the sheet metal bracket is provided with upper contacts whose quantity matches that of the lower contacts, and each upper contact is opposite to one lower contact; each fastening component includes a guide post member, a gasket, a guide sleeve and a spring. The guide post member penetrates through the sheet metal bracket and is fixedly connected to the steering wheel skeleton. The gasket is sleeved outside the guide post member and is located between the head end of the guide post member and the sheet metal bracket. The guide sleeve is sleeved outside the guide post member and is located between the sheet metal bracket and the steering wheel skeleton. The top end of the guide sleeve is fixedly connected to the sheet metal bracket. The spring is sleeved outside the guide sleeve. The top end of the spring abuts against the guide sleeve and the bottom end of the spring abuts against the steering wheel skeleton; the spring has a normal state and a compressed state. When the spring is in the normal state, there is a spacing between the lower contact and the upper contact. When the spring is in the compressed state, the lower contact abuts against and is electrically connected to the upper contact.

[0006] Preferably, the outer diameter of the head end of the guide post member is larger than the outer diameter of its middle end, the outer diameter of the middle end of the guide post member is larger than the outer diameter of its tail end, the tail end of the guide post member is provided with a thread, and the steering wheel skeleton is provided with threaded holes whose quantity matches that of the fastening components. The tail end of each guide post member is threadedly connected to one threaded hole.

[0007] For upward drawing, preferably, the steering wheel skeleton is further provided with grooves whose number matches that of the threaded holes. Each groove surrounds the outside of one threaded hole, and the bottom end of the spring abuts against the bottom wall of the groove.

[0008] Preferably, the outer wall of the guide sleeve is provided with a blocking ring. The inner wall of the blocking ring is fixedly connected to the outer wall of the guide sleeve. The top of the blocking ring abuts against the sheet metal bracket, the bottom of the blocking ring abuts against the top end of the spring, and the bottom end of the spring abuts against the steering wheel skeleton.

[0009] Preferably, the sheet metal bracket is provided with through holes whose number matches that of the fastening components. Each guide post passes through one through hole, and the part of each guide sleeve above its blocking ring is located in one through hole.

[0010] Preferably, the number of the fastening components is at least three. At least one fastening component is located at the midline of the steering wheel skeleton, and at least two fastening components are symmetrically arranged with respect to the midline of the steering wheel skeleton.

[0011] Preferably, the sheet metal bracket is further provided with an airbag mounting hole for mounting an airbag.

[0012] Preferably, the gasket is an elastic gasket.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] For a horn mechanism of a steering wheel of the present utility model, a stable connection between the sheet metal bracket and the steering wheel skeleton is realized through a fastening component composed of a guide post, a gasket, a guide sleeve and a spring. The sliding fit between the guide sleeve and the guide post ensures a stable relative displacement between the sheet metal bracket and the steering wheel skeleton. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0016] Figure 1 is a top view structural schematic diagram of a horn mechanism of a steering wheel of the present utility model;

[0017] Figure 2 is Figure 1 a structural schematic diagram of the A-A cross-section in

[0018] Figure 3 is a side view structural schematic diagram of a horn mechanism of a steering wheel of the present utility model;

[0019] Figure 4 is an exploded structural schematic diagram of a steering wheel horn mechanism of the present utility model;

[0020] In the figure: 1, steering wheel skeleton; 2, sheet metal bracket; 3, fastening assembly; 101, lower contact; 102, threaded hole; 103, groove; 201, upper contact; 202, through hole; 203, airbag mounting hole; 301, guide post member; 302, gasket; 303, guide sleeve; 304, spring; 3031, blocking ring. Specific embodiments

[0021] The technical solutions of the present utility model will be further specifically described below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present utility model is not limited to the following embodiments, and any formal modification and / or change made to the present utility model will fall within the protection scope of the present utility model.

[0022] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are all general standard parts or components known to those skilled in the art, and their structures and principles can all be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0023] The following makes a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings. In the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present utility model. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0024] An embodiment of the present utility model discloses a steering wheel horn mechanism, as Figures 1-4 shown. The steering wheel horn mechanism includes a steering wheel skeleton 1, a sheet metal bracket 2, and three fastening assemblies 3. The steering wheel skeleton 1 is connected to the sheet metal bracket 2 through the three fastening assemblies 3. Of course, the number of the fastening assemblies 3 can be adjusted according to actual application needs.

[0025] The steering wheel skeleton 1 is provided with four lower contacts 101, and the sheet metal bracket 2 is provided with upper contacts 201 whose number matches that of the lower contacts 101, and each upper contact 201 is opposite to a lower contact 101. Of course, the number of the lower contacts 101 and the number of the upper contacts 201 can be synchronously adjusted according to actual application needs.

[0026] Each fastening assembly 3 includes a guide post member 301, a gasket 302, a guide sleeve member 303, and a spring 304. The guide post member 301 penetrates through the sheet metal bracket 2 and is fixedly connected to the steering wheel skeleton 1. The gasket 302 is sleeved outside the guide post member 301 and is located between the head end of the guide post member 301 and the sheet metal bracket 2. The guide sleeve member 303 is sleeved outside the guide post member 301 and is located between the sheet metal bracket 2 and the steering wheel skeleton 1. The top end of the guide sleeve member 303 is fixedly connected to the sheet metal bracket 2. The spring 304 is sleeved outside the guide sleeve member 303. The top end of the spring 304 abuts against the guide sleeve member 303, and the bottom end of the spring 304 abuts against the steering wheel skeleton 1.

[0027] The spring 304 has a normal state and a compressed state. When the spring 304 is in the normal state, there is a spacing between the bottom end of the guide sleeve member 303 and the steering wheel skeleton 1, and there is a spacing between the lower contact 101 and the upper contact 201. When the spring 304 is in the compressed state, the lower contact 101 abuts against and is electrically connected to the upper contact 201.

[0028] When the spring 304 is in the normal state, pressing the sheet metal bracket 2 causes the sheet metal bracket 2 to drive the guide sleeve member 303 to move downward along the guide post member 301. The sheet metal bracket 2 stably moves downward relative to the steering wheel skeleton 1 until the spring 304 is in the compressed state. At this time, the lower contact 101 abuts against and is electrically connected to the upper contact 201, realizing the sound of the horn.

[0029] The steering wheel horn mechanism realizes the stable connection between the sheet metal bracket 2 and the steering wheel skeleton 1 through the fastening assembly 3 composed of the guide post member 301, the gasket 302, the guide sleeve member 303, and the spring 304. The sliding fit between the guide sleeve member 303 and the guide post member 301 ensures the stable relative displacement between the sheet metal bracket 2 and the steering wheel skeleton 1.

[0030] Specifically, the guide post member 301 has a stepped-down structure from the head end to the tail end. The outer diameter of the head end of the guide post member 301 is greater than the outer diameter of the middle end thereof. The outer diameter of the middle end of the guide post member 301 is greater than the outer diameter of the tail end thereof. The tail end of the guide post member 301 is provided with a thread. The steering wheel skeleton 1 is provided with threaded holes 102 whose quantity matches that of the fastening assemblies 3. The tail end of each guide post member 301 is threadedly connected to a threaded hole 102, thereby detachably and fixedly connecting the sheet metal bracket 2 and the steering wheel skeleton 1. The bottom of the middle end of each guide post member 301 directly abuts against the surface of the steering wheel skeleton 1.

[0031] Specifically, the steering wheel skeleton 1 is further provided with grooves 103 whose quantity matches that of the threaded holes 102. Each groove 103 surrounds the outside of a threaded hole 102. The bottom end of the spring 304 abuts against the bottom wall of the groove 103. The groove 103 can play a certain limiting role on the bottom end of the spring 304.

[0032] Specifically, a blocking ring 3031 is provided on the outer wall of the guide sleeve 303. The inner wall of the blocking ring 3031 is fixedly connected to the outer wall of the guide sleeve 303. The top of the blocking ring 3031 abuts against the sheet metal bracket 2, the bottom of the blocking ring 3031 abuts against the top end of the spring 304, and the bottom end of the spring 304 abuts against the steering wheel skeleton 1. The blocking ring 3031 and the guide sleeve 303 are of an integral structure. The blocking ring 3031 limits the relative position of the guide sleeve 303 and the sheet metal bracket 2, and the blocking ring 3031 also plays a role in limiting the top end of the spring 304.

[0033] Specifically, the sheet metal bracket 2 is provided with through holes 202 whose number matches that of the fastening components 3. Each guide post 301 passes through a through hole 202, and the part of each guide sleeve 303 above its blocking ring 3031 is located within a through hole 202.

[0034] Specifically, one fastening component 3 is located at the midline of the steering wheel skeleton 1, and two fastening components 3 are symmetrically arranged with respect to the midline of the steering wheel skeleton 1. Such an arrangement can ensure the connection stability between the sheet metal bracket 2 and the steering wheel skeleton 1 and ensure stable relative displacement between the sheet metal bracket 2 and the steering wheel skeleton 1.

[0035] Specifically, the sheet metal bracket 2 is further provided with an airbag mounting hole 203 for mounting an airbag, so as to facilitate the installation of the airbag assembly in cooperation.

[0036] Specifically, the gasket 302 is an elastic gasket 302. When the sheet metal bracket 2 is pressed down to cause relative displacement between the sheet metal bracket 2 and the steering wheel skeleton 1, the elastic gasket 302 plays a certain shock-absorbing role.

[0037] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A steering wheel horn mechanism, characterized in that: The steering wheel horn mechanism comprises a steering wheel frame (1), a sheet metal bracket (2) and a plurality of fastening components (3); the steering wheel frame (1) is connected to the sheet metal bracket (2) via the plurality of fastening components (3); the steering wheel frame (1) is provided with at least one lower contact (101); the sheet metal bracket (2) is provided with a number of upper contacts (201) matching the lower contacts (101), and each upper contact (201) is opposite to one lower contact (101); each fastening component (3) comprises a guide column member (301), a gasket (302), a guide sleeve member (303) and a spring (304); the guide column member (301) passes through the sheet metal bracket (2) and is fixedly connected to the steering wheel frame (1); the gasket (302) is sleeved on the guide column member (301). The guide sleeve (303) is sleeved outside the guide sleeve (301) and is located between the head end of the guide column member (301) and the sheet metal bracket (2); the guide sleeve (303) is sleeved outside the guide column member (301) and is located between the sheet metal bracket (2) and the steering wheel frame (1); the top end of the guide sleeve (303) is fixedly connected to the sheet metal bracket (2); the spring (304) is sleeved outside the guide sleeve (303); the top end of the spring (304) abuts against the guide sleeve (303) and the bottom end of the spring (304) abuts against the steering wheel frame (1); the spring (304) has a normal state and a compressed state; when the spring (304) is in the normal state, there is a distance between the lower contact (101) and the upper contact (201); when the spring (304) is in the compressed state, the lower contact (101) abuts against and is electrically connected to the upper contact (201).

2. A steering wheel horn mechanism according to claim 1, characterized in that: The outer diameter of the head end of the guide column component (301) is larger than the outer diameter of the middle end, the outer diameter of the middle end of the guide column component (301) is larger than the outer diameter of the tail end, the tail end of the guide column component (301) is provided with a thread, the steering wheel skeleton (1) is provided with a number of threaded holes (102) matching the fastening assembly (3), and the tail end of each guide column component (301) is threadedly connected to a threaded hole (102).

3. A steering wheel horn mechanism according to claim 2, characterized in that: The steering wheel skeleton (1) is also provided with a number of grooves (103) matching the threaded holes (102), each of the grooves (103) surrounds the outside of a threaded hole (102), and the bottom end of the spring (304) abuts against the bottom wall of the groove (103).

4. A steering wheel horn mechanism according to claim 1, characterized in that: The outer wall of the guide sleeve (303) is provided with a blocking ring (3031), the inner wall of the blocking ring (3031) is fixedly connected to the outer wall of the guide sleeve (303), the top of the blocking ring (3031) abuts against the sheet metal bracket (2), the bottom of the blocking ring (3031) abuts against the top of the spring (304), and the bottom end of the spring (304) abuts against the steering wheel frame (1).

5. The steering wheel horn mechanism according to claim 1, characterized in that: The sheet metal bracket (2) is provided with through holes (202) whose number matches that of the fastening assembly (3); each guide column member (301) passes through a through hole (202); and the portion of each guide sleeve (303) located above its blocking ring (3031) is located in a through hole (202).

6. A steering wheel horn mechanism according to claim 1, characterized in that: The number of the fastening components (3) is at least three, at least one fastening component (3) is located at the midline of the steering wheel skeleton (1), and at least two fastening components (3) are symmetrically arranged about the midline of the steering wheel skeleton (1).

7. The steering wheel horn mechanism according to claim 1, characterized in that: The sheet metal bracket (2) is also provided with an airbag mounting hole (203) for mounting the airbag.

8. The steering wheel horn mechanism according to claim 1, characterized in that: The gasket (302) is an elastic gasket (302).

Images