Steering wheel horn module

Abstract

The utility model provides a steering wheel horn module which comprises a steering wheel framework, a support part and a plurality of fasteners, and the steering wheel framework is detachably and fixedly connected with the support part through the fasteners. The support part comprises a metal plate support and a plastic-coated part which are detachably and fixedly connected, the metal plate support is further provided with a plurality of first through holes with the same number as the fasteners, the plastic-coated part is provided with a plurality of guide sleeves with the same number as the fasteners, the guide sleeves and the plastic-coated part are integrally formed, and each guide sleeve is inserted into one first through hole; each fastener comprises a guide column and a spring, the guide column penetrates through the guide sleeve and then is detachably and fixedly connected with the steering wheel framework, the guide sleeve is sleeved with the spring, the top end of the spring abuts against the plastic-coated part, and the bottom end of the spring abuts against the steering wheel framework; the spring is configured to enable the lower contact and the upper contact to be in a non-contact state when the spring is in a normal state. According to the utility model, the guide sleeve structure is directly integrated into the plastic-coated part, and a guide sleeve does not need to be independently arranged, so that the structure and the manufacturing process of the metal plate bracket are obviously simplified.

Description

Technical Field

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

[0002] The steering wheel horn module is an important part of the automobile steering wheel. It not only undertakes the function of triggering the horn, but also needs to work in coordination with other components such as the airbag system. The traditional steering wheel horn module usually adopts a sheet metal bracket structure, which is made by sheet metal stamping forming process. The guide sleeve structure usually needs to be manufactured separately and installed on the sheet metal bracket, which not only increases the production process, but also may introduce additional assembly errors. At the same time, when other functional structures such as airbag positioning structure or airbag snap ring installation structure need to be added, it often needs to be realized by adding parts or complex stamping processes, which leads to an increase in the number of parts and the manufacturing cost. Content of the Utility Model

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

[0004] In order to achieve the above utility model purpose, the utility model provides the following technical solutions:

[0005] A steering wheel horn module, comprising a steering wheel skeleton, a bracket member and a plurality of fasteners. The steering wheel skeleton is detachably and fixedly connected to the bracket member through the plurality of fasteners; the steering wheel skeleton is provided with a plurality of lower contacts; the bracket member includes a sheet metal bracket and a plastic-encapsulated part that are detachably and fixedly connected. The sheet metal bracket is provided with a plurality of upper contacts having the same number as the lower contacts. Each upper contact is disposed opposite to one of the lower contacts and can be in contact with the lower contact for electrical connection. The sheet metal bracket is further provided with a plurality of first through holes having the same number as the fasteners. The plastic-encapsulated part is provided with a plurality of guide sleeves having the same number as the fasteners. The guide sleeves are integrally formed with the plastic-encapsulated part, and each guide sleeve is respectively inserted into a first through hole; each fastener includes a guide post and a spring. The guide post passes through the guide sleeve and is detachably and fixedly connected to the steering wheel skeleton. The spring is sleeved outside the guide sleeve, the top end of the spring abuts against the plastic-encapsulated part, and the bottom end of the spring abuts against the steering wheel skeleton; the spring is configured such that when the spring is in a normal state, the lower contact and the upper contact are in a non-contact state.

[0006] Preferably, each of the first through holes is further provided with a plurality of first positioning holes circumferentially surrounding the first through hole. Each of the guide sleeves is provided with a plurality of first positioning protrusions circumferentially surrounding the outer wall of the guide sleeve. The number of the first positioning protrusions is the same as the number of the first positioning holes, and each first positioning protrusion is inserted into a first positioning hole.

[0007] Preferably, each of the guide sleeves is further provided with a plurality of blocking protrusions surrounding the outer wall of the guide sleeve in the circumferential direction. The blocking protrusions are located below the first positioning protrusions, and the blocking protrusions are used to abut against the top end of the spring.

[0008] Preferably, the sheet metal bracket is further provided with a plurality of second through holes, and the plastic coated part is further provided with a plurality of buckles having the same number as the second through holes. Each buckle passes through a second through hole and abuts against the bottom of the sheet metal bracket.

[0009] Preferably, the sheet metal bracket is further provided with a plurality of second positioning holes, and the plastic coated part is further provided with a plurality of second positioning protrusions having the same number as the second positioning holes. The second positioning protrusions protrude from the bottom of the plastic coated part, and each second positioning protrusion is inserted into a second positioning hole.

[0010] Preferably, the edge part of the sheet metal bracket is further provided with a flanging protrusion.

[0011] Preferably, the fastener further includes a shock-absorbing gasket. The shock-absorbing gasket is sleeved outside the guide post, and the shock-absorbing gasket is located between the head end of the guide post and the top end of the guide sleeve.

[0012] Preferably, the lower part of the guide post is provided with a connecting part having an outer diameter smaller than that of the middle part of the guide post. The steering wheel skeleton is further provided with a plurality of fastening seats having the same number as the fasteners. The fastening seats are fixedly connected to the surface of the steering wheel skeleton, and the connecting part of each guide post is threadedly connected to one of the fastening seats.

[0013] Preferably, the steering wheel skeleton is further provided with a plurality of contact seats. The contact seats are fixedly connected to the surface of the steering wheel skeleton, and each of the lower contacts is arranged on the top of one of the contact seats.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] A steering wheel horn module of the present utility model adopts an innovative design of the bracket member, which divides the bracket member into two parts, namely a sheet metal bracket and a plastic coated part, which are detachably and fixedly connected. The plastic coated part adopts an integrated plastic molding process, directly integrating the guide sleeve structure into the plastic coated part, without the need to separately set a guide sleeve, significantly simplifying the structure and manufacturing process of the sheet metal bracket. At the same time, the integrated molding characteristic of the plastic coated part enables it to flexibly integrate a variety of other matching structures as needed, such as a spring installation structure, an airbag positioning structure, and an airbag circlip installation structure. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0017] Figure 1 is the front view structural schematic diagram of a steering wheel horn module of the present invention;

[0018] Figure 2 is Figure 1 the structural schematic diagram of the A-A cross-section in

[0019] Figure 3 is Figure 2 the partial enlarged view of part B in

[0020] Figure 4 is the exploded structural schematic diagram of a steering wheel horn module of the present invention;

[0021] In the figure: 1, steering wheel skeleton; 2, bracket part; 3, fastener; 101, lower contact; 102, fastening seat; 103, contact seat; 201, sheet metal bracket; 202, plastic-coated part; 2011, upper contact; 2012, first through hole; 2013, first positioning hole; 2014, second through hole; 2015, second positioning hole; 2016, flanging protrusion; 2021, guide sleeve; 2022, first positioning protrusion; 2023, blocking protrusion; 2024, buckle; 2025, second positioning protrusion; 301, guide post; 302, spring; 303, shock-absorbing gasket. Detailed implementation manners

[0022] The following will further specifically illustrate the technical solutions of the present invention through specific embodiments and in combination with the drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0023] In the present invention, 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, unless otherwise specified, are conventional methods in the art. The parts or equipment in the following embodiments, unless otherwise specified, are general standard parts or parts 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 obtained through conventional experimental methods.

[0024] The following will make a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings. In the following detailed description, for the convenience 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.

[0025] An embodiment of the present utility model discloses a steering wheel horn module. As Figures 1-4 shown, the steering wheel horn module includes a steering wheel skeleton 1, a bracket member 2, and three fasteners 3. The steering wheel skeleton 1 is detachably and fixedly connected to the bracket member 2 through the three fasteners 3. One fastener 3 is located at the midline of the steering wheel skeleton 1, and the two fasteners 3 are symmetrically arranged with respect to the midline of the steering wheel skeleton 1. Of course, in other embodiments, the number and arrangement positions of the fasteners 3 can be adjusted according to actual application requirements.

[0026] The steering wheel skeleton 1 is provided with four lower contacts 101.

[0027] The bracket member 2 includes a sheet metal bracket 201 and a plastic-encapsulated part 202 that are detachably and fixedly connected. The sheet metal bracket 201 is provided with four upper contacts 2011 that are the same in number as the lower contacts 101. Each upper contact 2011 is arranged opposite to one lower contact 101 and can be in contact with the lower contact 101 for electrical connection.

[0028] The sheet metal bracket 201 also is provided with three first through holes 2012 that are the same in number as the fasteners 3. The plastic-encapsulated part 202 is provided with three guide sleeves 2021 that are the same in number as the fasteners 3. The guide sleeves 2021 are integrally formed with the plastic-encapsulated part 202, and each guide sleeve 2021 is respectively inserted into one first through hole 2012.

[0029] Each fastener 3 includes a guide post 301 and a spring 302. The guide post 301 passes through the guide sleeve 2021 and is detachably and fixedly connected to the steering wheel skeleton 1. The spring 302 is sleeved outside the guide sleeve 2021. The top end of the spring 302 abuts against the plastic-encapsulated part 202, and the bottom end of the spring 302 abuts against the steering wheel skeleton 1. The spring 302 is configured such that when the spring 302 is in a normal state, that is, when the spring 302 is not compressed and deformed, the lower contact 101 and the upper contact 2011 are in a non-contact state, that is, there is a gap between the lower contact 101 and the upper contact 2011. When the spring 302 is compressed and deformed by force, the lower contact 101 can be in contact with the upper contact 2011 for electrical connection.

[0030] Specifically, in order to improve the stability of the relative position between the plastic-encapsulated part 202 and the sheet metal bracket 201, each first through hole 2012 is further provided with three first positioning holes 2013 that circumferentially surround the first through hole 2012. Each guide sleeve 2021 is provided with three first positioning protrusions 2022 that circumferentially surround the outer wall of the guide sleeve 2021, and each first positioning protrusion 2022 is inserted into a first positioning hole 2013. Of course, in other embodiments, the number of the first positioning holes 2013 and the first positioning protrusions 2022 can be adjusted synchronously, as long as the number of the first positioning protrusions 2022 is the same as that of the first positioning holes 2013. The three first positioning holes 2013 in this embodiment are evenly spaced, and the corresponding three first positioning protrusions 2022 are also evenly spaced. In other embodiments, the multiple first positioning holes 2013 may not be evenly spaced, and the multiple first positioning protrusions 2022 may not be evenly spaced, as long as the position of each first positioning hole 2013 corresponds to the position of a first positioning protrusion 2022.

[0031] Specifically, in order to facilitate the limitation of the spring 302, each guide sleeve 2021 is further provided with a plurality of blocking protrusions 2023 that circumferentially surround the outer wall of the guide sleeve 2021. The number of the blocking protrusions 2023 can be set according to actual application needs. The blocking protrusions 2023 are located below the first positioning protrusions 2022, and the blocking protrusions 2023 are used to abut against the top end of the spring 302. The blocking protrusions 2023 serve as a part of the installation structure of the spring 302.

[0032] Specifically, the sheet metal bracket 201 is further provided with two second through holes 2014, and the two second through holes 2014 are symmetrically arranged with respect to the center line of the sheet metal bracket 201. The plastic-encapsulated part 202 is further provided with two buckles 2024 having the same number as the second through holes 2014. Each buckle 2024 passes through a second through hole 2014 and abuts against the bottom of the sheet metal bracket 201, thereby forming a buckle 2024 structure to realize the detachable fixed connection between the sheet metal bracket 201 and the plastic-encapsulated part 202. Of course, in other embodiments, the number of the second through holes 2014 and the buckles 2024 can be adjusted synchronously, and their positions can also be adjusted accordingly.

[0033] Specifically, in order to improve the stability of the relative position between the plastic - coated part 202 and the sheet - metal bracket 201, the sheet - metal bracket 201 is further provided with four second positioning holes 2015, and the plastic - coated part 202 is also provided with four second positioning protrusions 2025 with the same number as the second positioning holes 2015. The second positioning protrusions 2025 protrude from the bottom of the plastic - coated part 202, and each second positioning protrusion 2025 is inserted into a second positioning hole 2015. Of course, in other embodiments, the number of the second positioning holes 2015 and the second positioning protrusions 2025 can be adjusted synchronously, as long as the number of the second positioning protrusions 2025 is the same as the number of the second positioning holes 2015.

[0034] Specifically, the edge part of the sheet - metal bracket 201 is further provided with a flanging protrusion 2016. This structure utilizes the characteristics of the metal sheet of the sheet - metal bracket 201. By bending the edge part to form the flanging protrusion 2016, the rigidity and anti - bending ability of the sheet - metal bracket 201 are increased, and the strength and stability of the entire bracket part 2 are improved.

[0035] Specifically, the fastener 3 further includes a shock - absorbing gasket 303. The shock - absorbing gasket 303 is sleeved outside the guide post 301, and the shock - absorbing gasket 303 is located between the head end of the guide post 301 and the top end of the guide sleeve 2021.

[0036] Specifically, the lower part of the guide post 301 is provided with a connecting part whose outer diameter is smaller than the middle part of the guide post 301. The steering wheel skeleton 1 is further provided with three fastening seats 102 with the same number as the fasteners 3. The fastening seats 102 are fixedly connected to the surface of the steering wheel skeleton 1, and the connecting part of each guide post 301 is threadedly connected to a fastening seat 102.

[0037] Specifically, the steering wheel skeleton 1 is further provided with four contact seats 103. The contact seats 103 are fixedly connected to the surface of the steering wheel skeleton 1, and each lower contact 101 is arranged on the top of a contact seat 103.

[0038] This steering wheel horn module adopts an innovative design of the bracket part 2, which divides the bracket part 2 into two parts: a sheet - metal bracket 201 and a plastic - coated part 202 that are detachably and fixedly connected. The plastic - coated part 202 adopts an integrated plastic - coating forming process, directly integrating the guide sleeve 2021 structure into the plastic - coated part 202 without separately setting the guide sleeve 2021, significantly simplifying the structure and manufacturing process of the sheet - metal bracket 201. At the same time, the integrated - forming characteristic of the plastic - coated part 202 enables it to flexibly integrate a variety of other mating structures as needed, such as a spring 302 installation structure, an airbag positioning structure, and an airbag snap - ring installation structure. In addition, the flanging protrusion 2016 of the sheet - metal bracket 201 increases the rigidity and anti - bending ability of the sheet - metal bracket 201, improving the strength and stability of the entire bracket part 2.

[0039] In this article, specific examples are used to elaborate on the principles and implementation modes of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A steering wheel horn module, characterized in that: The steering wheel horn module includes a steering wheel skeleton (1), a bracket member (2), and a plurality of fasteners (3). The steering wheel skeleton (1) is detachably and fixedly connected to the bracket member (2) by the plurality of fasteners (3). The steering wheel skeleton (1) is provided with a plurality of lower contacts (101). The bracket member (2) includes a sheet metal bracket (201) and a plastic molded part (202) that are detachably and fixedly connected. The sheet metal bracket (201) is provided with a plurality of upper contacts (2011) having the same number as the lower contacts (101). Each upper contact (2011) is disposed opposite to one lower contact (101) and can be in contact with the lower contact (101) for electrical connection. The sheet metal bracket (201) is further provided with a plurality of first through holes (2012) having the same number as the fasteners (3). The plastic molded part (202) is provided with a plurality of guide sleeves (2021) having the same number as the fasteners (3). The guide sleeves (2021) are integrally formed with the plastic molded part (202), and each guide sleeve (2021) is respectively inserted into a first through hole (2012). Each fastener (3) includes a guide post (301) and a spring (302). The guide post (301) passes through the guide sleeve (2021) and is detachably and fixedly connected to the steering wheel skeleton (1). The spring (302) is sleeved outside the guide sleeve (2021). The top end of the spring (302) abuts against the plastic molded part (202), and the bottom end of the spring (302) abuts against the steering wheel skeleton (1). The spring (302) is configured such that when the spring (302) is in a normal state, the lower contact (101) and the upper contact (2011) are in a non-contact state.

2. The steering wheel horn module according to claim 1, wherein: Each of the first through holes (2012) is further provided with a plurality of first positioning holes (2013) circumferentially surrounding the first through hole (2012). Each of the guide sleeves (2021) is provided with a plurality of first positioning protrusions (2022) circumferentially surrounding the outer wall of the guide sleeve (2021). The number of the first positioning protrusions (2022) is the same as the number of the first positioning holes (2013), and each first positioning protrusion (2022) is inserted into a first positioning hole (2013).

3. The steering wheel horn module according to claim 2, wherein: Each of the guide sleeves (2021) is further provided with a plurality of blocking protrusions (2023) circumferentially surrounding the outer wall of the guide sleeve (2021). The blocking protrusions (2023) are located below the first positioning protrusions (2022), and the blocking protrusions (2023) are used to abut against the top end of the spring (302).

4. A steering wheel horn module according to claim 1, characterized in that: The sheet metal bracket (201) is further provided with a plurality of second through holes (2014). The plastic molded part (202) is further provided with a plurality of buckles (2024) having the same number as the second through holes (2014). Each buckle (2024) passes through a second through hole (2014) and abuts against the bottom of the sheet metal bracket (201).

5. A steering wheel horn module according to claim 1, characterized in that: The sheet metal bracket (201) is further provided with a plurality of second positioning holes (2015), and the plastic-encapsulated part (202) is further provided with a plurality of second positioning protrusions (2025) having the same number as that of the second positioning holes (2015). The second positioning protrusions (2025) protrude from the bottom of the plastic-encapsulated part (202), and each second positioning protrusion (2025) is inserted into a second positioning hole (2015).

6. The steering wheel horn module according to claim 1, characterized in that: The edge part of the sheet metal bracket (201) is further provided with a flanging protrusion (2016).

7. The steering wheel horn module according to claim 1, characterized in that: The fastener (3) further includes a shock-absorbing gasket (303). The shock-absorbing gasket (303) is sleeved outside the guide post (301), and the shock-absorbing gasket (303) is located between the head end of the guide post (301) and the top end of the guide sleeve (2021).

8. A steering wheel horn module according to claim 1, wherein: The lower part of the guide post (301) is provided with a connecting part having an outer diameter smaller than that of the middle part of the guide post (301). The steering wheel skeleton (1) is further provided with a plurality of fastening seats (102) having the same number as that of the fasteners (3). The fastening seats (102) are fixedly connected to the surface of the steering wheel skeleton (1), and the connecting part of each guide post (301) is threadedly connected to a fastening seat (102).

9. The steering wheel horn module according to claim 1, wherein: The steering wheel skeleton (1) is further provided with a plurality of contact seats (103). The contact seats (103) are fixedly connected to the surface of the steering wheel skeleton (1), and each lower contact (101) is arranged on the top of a contact seat (103).

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