Heat dissipation structure and control assembly

Abstract

The application relates to a heat dissipation structure and a control assembly, and relates to the technical field of automobile parts. The heat dissipation structure comprises a shell, a heat dissipation block and heat dissipation fins, a heat dissipation cavity is formed through the shell, the heat dissipation block is embedded in the heat dissipation cavity and at least partially extends out of the heat dissipation cavity, the heat dissipation fins are wrapped around the heat dissipation block along an arc-shaped direction, and both ends of the heat dissipation fins are clamped in the heat dissipation cavity. The application can fix the heat dissipation fins to the heat dissipation block, and guarantee that the heat dissipation structure can stably exert the heat dissipation effect.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a heat dissipation structure and control assembly. Background Technology

[0002] With the increasing prevalence of electrification and intelligentization in the automotive industry in recent years, car interiors have also undergone revolutionary changes, especially steering wheel switches: they have gradually evolved from simple control functions, such as volume adjustment, song switching, and answering phone calls, to integrating more complex functions, such as driver assistance, steering wheel heating, and hands-off detection.

[0003] The more functions a steering wheel switch has, the more complex its logic and the denser its circuitry becomes. Consequently, the steering wheel switch needs to be cooled to reduce heat buildup caused by the dense wiring, thus ensuring the stable operation of the steering wheel control assembly.

[0004] In related technologies, the heat dissipation structure on the steering wheel mainly includes a housing, a heat sink, and heat sink fins bonded to the heat sink. The housing is fixed inside the steering wheel, and heat is conducted through the combination of the heat sink and the heat sink to achieve the purpose of cooling. However, because the heat sink is bonded to the heat sink, it is possible for the heat sink to detach from the heat sink during heat conduction, further resulting in poor heat dissipation.

[0005] Therefore, there is an urgent need to provide a heat dissipation structure that can effectively fix the heat sink to the heat sink block, ensuring that the heat dissipation structure can stably perform its heat dissipation function. Utility Model Content

[0006] The purpose of this application is to provide a heat dissipation structure and control assembly that can effectively fix the heat sink to the heat sink block, ensuring that the heat dissipation structure can stably perform its heat dissipation function.

[0007] Firstly, the heat dissipation structure provided in this application adopts the following technical solution:

[0008] A heat dissipation structure, comprising:

[0009] The casing has a heat dissipation cavity extending through it;

[0010] A heat sink is embedded in the heat dissipation cavity and extends at least partially out of the heat dissipation cavity;

[0011] The heat sink covers the heat sink block along an arc shape, and both ends of the heat sink are snapped into the heat dissipation cavity.

[0012] Furthermore, the heat sink includes:

[0013] Matrix;

[0014] The fixing part extends from both sides of the base, and the fixing part is pressed into the shell and clamps the heat sink when the fixing part is pressed into place.

[0015] Furthermore, the plurality of fixing parts are spaced apart to form a plurality of slots, and a plurality of elastic snap-fit ​​members are fixedly provided in the heat dissipation cavity, which correspond one-to-one with the plurality of slots. The elastic snap-fit ​​members extend into the corresponding slots and snap-fit ​​with the heat dissipation block.

[0016] Furthermore, the heat sink includes:

[0017] main body;

[0018] The first connecting part has multiple first connecting parts extending from both sides of the main body, and the multiple first connecting parts are respectively arranged in a one-to-one correspondence with the multiple fixing parts; the first connecting parts overlap the corresponding fixing parts, and heat dissipation grooves are formed between adjacent first connecting parts to avoid the snap-fit ​​component.

[0019] Furthermore, the heat sink also includes a second connecting portion disposed within the heat dissipation groove. The second connecting portion is attached to the substrate and is clamped when the substrate and the heat sink are engaged.

[0020] Furthermore, the heat sink is bonded to the heat sink block.

[0021] Furthermore, a cavity is formed on the side of the substrate opposite to the heat sink.

[0022] Furthermore, the heat sink is made of a flexible material.

[0023] Secondly, this application provides a control assembly including the aforementioned heat dissipation structure.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. This application clamps the heat sink when the heat sink is fitted to the housing, thereby fixing the heat sink better. Compared with the method of bonding the heat sink to the heat sink, this method can better fix the heat sink and effectively reduce the situation where the heat sink will detach from the heat sink due to the heat sink temperature rising.

[0026] 2. This application achieves good fixation by extending a first connecting portion and a second connecting portion onto the heat sink, clamping the first connecting portion between the housing and the fixing portion, and clamping the second connecting portion between the snap-fit ​​component and the base. Furthermore, it can further reinforce the connection by retaining the adhesive bonding method between the heat sink block and the heat sink, ensuring good stability of the heat dissipation structure. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the heat dissipation structure in this application;

[0028] Figure 2 This is a three-dimensional structural diagram of the heat dissipation structure in this application from another perspective;

[0029] Figure 3 This is a partial structural diagram of the heat dissipation structure in this application.

[0030] In the figure, 1 is the shell; 11 is the heat dissipation cavity; 2 is the heat dissipation block; 21 is the base; 211 is the cavity; 22 is the fixing part; 23 is the slot; 3 is the heat dissipation fin; 31 is the main body; 32 is the first connecting part; 33 is the heat dissipation groove; 34 is the second connecting part; and 4 is the snap-fit ​​component. Detailed Implementation

[0031] The following will be combined with the appendix Figure 1-3 The technical solution of this application is clearly and completely described. The following embodiments are exemplary and are only used to explain this application, and should not be construed as limiting this application. In the following description, the same reference numerals are used to denote the same or equivalent elements, and repeated descriptions are omitted.

[0032] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this application and to simplify the description, and are not intended to indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] It should also be further understood that the term “and / or” as used in this application refers to any combination of one or more of the listed items, and all possible combinations thereof.

[0035] Example 1:

[0036] A heat dissipation structure, as shown in the figure Figure 1 and Figure 2It includes a housing 1, a heat sink 2, and a heat sink 3 that covers the heat sink 2 along an arc. A heat dissipation cavity 11 is provided through the housing 1. The heat sink 2 is covered by the heat sink 3 and embedded in the heat dissipation cavity 11, and at least partially extends out of the heat dissipation cavity 11.

[0037] The extended portion of the heat sink 2 indirectly contacts the heat source through the heat sink 3 to transfer heat.

[0038] The heat sink 3 is wrapped around the heat sink 2 along an arc shape, and both ends of the heat sink 3 are snapped into the heat dissipation cavity 11. The heat sink 3 is made of a flexible material (such as silicone) to better conform to the surface of the heat sink 2.

[0039] Specifically, in combination Figure 3 The heat sink 2 includes a base 21, with multiple fixing parts 22 extending from both sides of the base 21. The multiple fixing parts 22 are spaced apart to form a number of slots 23. A number of elastic snap-fit ​​members 4 are fixed in the heat sink cavity 11, which correspond one-to-one with the slots 23. The elastic snap-fit ​​members 4 extend into the corresponding slots 23 and snap-fit ​​with the heat sink 2.

[0040] The number of fixing parts 22 on each side of the base 21 is specifically set according to the actual situation. For example, two, three or more can be set. The number of slots 23 is confirmed after the number of fixing parts 22 is determined. In this embodiment, there are three fixing parts 22 on each side of the base 21, and correspondingly, there are two slots 23 on each side of the base 21.

[0041] When the heat sink 2 is snapped into the heat dissipation cavity 11 by the snap-fit ​​part 4, the fixing part 22 is pressed against the housing 1 and the heat sink 3 is clamped when the fixing part 22 is pressed against the housing 1.

[0042] When the heat sink 2 is assembled with the housing 1, the extended fixing part 22 abuts against the bottom wall of the housing 1, and the part of the heat sink 3 that contacts the fixing part 22 is clamped by the fixing part 22 and the bottom wall of the housing 1, thereby fixing the heat sink 3. Compared with the method of bonding the heat sink 3 to the heat sink 2, the heat sink 3 can be fixed better, effectively reducing the possibility of the heat sink 3 detaching from the heat sink 2 due to the heat sink 3 delaminating due to the temperature rise.

[0043] Based on this, the bonding method between the heat sink 2 and the heat fin 3 can be retained or not. In this embodiment, the heat sink 3 is bonded to the heat sink 2 to further strengthen the connection between the heat sink 2 and the heat fin 3.

[0044] It should be noted that, in this embodiment, the form of the elastic snap-fit ​​component 4 is not specifically limited.

[0045] In this embodiment, the elastic snap-fit ​​member 4 has an inclined surface, and the extension lines of the inclined surfaces of multiple snap-fit ​​members 4 converge toward the center of the heat dissipation cavity 11. During the process of the heat dissipation block 2 being snapped into the heat dissipation cavity 11, the snap-fit ​​member 4 extends into the slot 23, and the heat dissipation block 2 pushes the snap-fit ​​member 4 away from the center of the heat dissipation cavity 11 until the side of the base 21 abuts against the top surface of the snap-fit ​​member 4, and the top surface of the fixing part 22 abuts against the bottom surface of the housing 1, thus completing the snap-fit ​​of the heat dissipation block 2.

[0046] In other embodiments, the heat sink 2 can be snapped into the heat dissipation cavity 11 using, for example, a snap-fit ​​or a pin.

[0047] Furthermore, referring to Figure 1 and Figure 3 The heat sink 3 includes a main body 31, and multiple first connecting parts 32 extend from both sides of the main body 31. The multiple connecting parts are corresponding to multiple fixing parts 22. The first connecting parts 32 overlap onto the corresponding fixing parts 22, and adjacent first connecting parts 32 are spaced apart to form heat dissipation grooves 33 to avoid the card connector 4.

[0048] The placement of the heat dissipation slot 33 facilitates airflow to better dissipate heat from the steering wheel switch.

[0049] Based on this, refer to Figure 2 A cavity 211 is formed on the side of the substrate 21 facing away from the heat sink 3. By providing the cavity 211, the contact area of ​​the substrate 21 facing away from the heat sink 3 is increased, thereby further optimizing airflow and improving heat dissipation. The number of cavities 211 can be one, two, three, or more. In this embodiment, two cavities 211 are provided and symmetrically arranged along the length of the substrate 21. In another embodiment, the number of cavities 211 can be further increased.

[0050] In addition, the heat sink 3 also includes a second connecting part 34 (not shown in the figure) disposed in the heat sink 33. The second connecting part 34 is attached to the base 21 and is clamped when the base 21 and the heat sink 2 are engaged.

[0051] In another way, the end of the heat sink 3 is cut off to form a first connecting part 32 and a second connecting part 34 arranged in sequence at intervals. The first connecting part 32 is attached to the fixing part 22 and is held by the housing 1 and the fixing part 22. The second connecting part 34 is attached to the groove wall of the slot 23 and is held by the snap fastener 4 and the base 21.

[0052] The heat sink 3 is further reinforced by the second connecting part 34 so that the heat sink 3 can be better fixed and the possibility of the heat sink 3 detaching from the heat sink block 2 is reduced.

[0053] Example 2:

[0054] The difference between this embodiment 2 and embodiment 1 is that a control assembly is also disclosed, which includes the heat dissipation structure described in embodiment 1.

[0055] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat dissipation structure, characterized in that, include: The housing (1) has a heat dissipation cavity (11) extending through it; A heat sink (2) is embedded in the heat sink cavity (11) and extends at least partially out of the heat sink cavity (11); The heat sink (3) is wrapped around the heat sink (2) along an arc shape, and both ends of the heat sink (3) are snapped into the heat sink cavity (11).

2. The heat dissipation structure according to claim 1, characterized in that, The heat sink (2) includes: Matrix (21); The fixing part (22) extends from both sides of the base (21) and is pressed against the housing (1), and clamps the heat sink (3) when the fixing part (22) is pressed against the housing (1).

3. The heat dissipation structure according to claim 2, characterized in that, Multiple fixing parts (22) are spaced apart to form a number of slots (23). A number of elastic snap-fit ​​members (4) are fixed in the heat dissipation cavity (11) and are respectively arranged in a number of slots (23). The elastic snap-fit ​​members (4) extend into the corresponding slots (23) and snap-fit ​​with the heat dissipation block (2).

4. The heat dissipation structure according to claim 3, characterized in that, The heat sink (3) includes: Main body (31); The first connecting part (32) extends from both sides of the main body (31) and a plurality of first connecting parts are provided, and the plurality of first connecting parts (32) are provided in a one-to-one correspondence with the plurality of fixing parts (22); The first connecting part (32) overlaps with the corresponding fixing part (22), and heat dissipation grooves (33) are formed at intervals between adjacent connecting parts to avoid the snap-fit ​​member (4).

5. A heat dissipation structure according to claim 4, characterized in that, The heat sink (3) also includes a second connecting part (34) disposed in the heat sink (33). The second connecting part (34) is attached to the substrate (21) and is clamped when the substrate (21) and the heat sink (2) are engaged.

6. A heat dissipation structure according to any one of claims 1-5, characterized in that, The heat sink (3) is bonded to the heat sink (2).

7. A heat dissipation structure according to claim 2, characterized in that, The substrate (21) has a cavity (211) on the side opposite to the heat sink (3).

8. A heat dissipation structure according to claim 1, characterized in that, The heat sink (3) is made of a flexible material.

9. A control assembly, characterized in that, Includes the heat dissipation structure as described in any one of claims 1-8.

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