Shell for electronic equipment and electronic equipment
By designing a gap between the main body and the bottom plate of the electronic device housing, and using the structure of the protrusions and side walls to prevent water from entering, the problems of easy water seepage and poor heat dissipation of the shell in the prior art are solved, and good waterproofing and heat dissipation effects are achieved.
Patent Information
- Application Number
- CN202422055467.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The shells of existing electronic equipment are prone to seeping water in the joints, and the fully sealed shell is not conducive to heat dissipation, resulting in aging of the seal and reducing the waterproof effect and affecting heat dissipation.
A housing is designed in which there is a gap between the main body and the base plate, and water is prevented from entering by the design of surrounding protrusions and side walls, while improving the heat dissipation effect.
It realizes that water can be prevented from entering the shell without a separate seal, while improving the heat dissipation performance of electronic equipment and reducing the problem of waterproofing effect caused by aging of seals.
Smart Images
Figure CN223040303U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a housing for an electronic device and an electronic device. Background Art
[0002] There are various electronic devices in modern automobiles, such as electronic controllers for vehicle airbags, engine controllers for internal combustion engines, motor controllers for electric motors, etc. Such electronic devices usually have a housing, and electronic components such as circuit board assemblies are arranged in the inner cavity of the housing. Electronic components are usually relatively sensitive and fragile parts, which are very easy to be damaged, and the housing can provide protection for the electronic components. In addition, for electronic devices, the waterproof problem is also very important. Usually, the housing is formed by fixing two housing parts together, and it is easy for water to seep through the joint of the two housing parts. Therefore, in the prior art, a separate seal is usually used at the joint of the two housing parts to prevent water from entering the housing. However, the use of a separate seal will increase the complexity of the housing on the one hand, and as the seal ages, its sealing effect will also decrease. In addition, a completely sealed housing will also cause difficulties in heat dissipation of the electronic device, because a large amount of heat is generated during the operation of the electronic device. Summary of the Utility Model
[0003] The purpose of the present application is to solve or at least alleviate at least some of the problems existing in the prior art.
[0004] A first aspect of the present application is to provide a housing for an electronic device, the housing including: a main body having a top wall and side walls extending from the top wall, a lower edge of the side walls defining a housing opening; and a bottom plate fixedly connected to the main body to cover the housing opening. It is proposed herein that the bottom plate includes a covering area for covering the housing opening, wherein a peripheral portion of the covering area has a surrounding protrusion protruding from an upper side of the bottom plate, and the side walls of the main body circumferentially surround the covering area of the bottom plate and there is a gap between the side walls of the main body and the protrusion, so that the side walls of the main body do not contact the protrusion, wherein the size of the gap is such that water reaching the gap will not rise above the height of the protrusion due to capillary action.
[0005] Thus, different from the housing of traditional electronic devices, there is a gap between the two housing components of the housing, namely the main body and the bottom plate, rather than a sealed connection. Through the surrounding protrusion and the side wall surrounding the covering area of the bottom plate in the circumferential direction, water can already be prevented from entering the interior of the housing through the gap over the protrusion, so there is no need to use a separate seal. In addition, since there is a gap between the side wall of the main body and the covering area of the bottom plate, the heat generated by the electronic components of the electronic device can be discharged through the gap, thereby improving the heat dissipation of the electronic device.
[0006] Optionally, the size of the gap is 1 mm - 4 mm. Thus, the size of the gap is sufficient to prevent water from rising in the gap due to capillary action and passing over the protrusion into the interior of the housing.
[0007] Optionally, the bottom plate includes a fixing area extending from the periphery of the covering area for fixing the electronic device, wherein the fixing area extends beyond the side wall of the main body from below the lower edge of the side wall of the main body.
[0008] Optionally, there is a gap between the side wall of the main body and the fixing area, so that the lower edge of the side wall of the main body does not contact the fixing area of the bottom plate.
[0009] Optionally, the side wall has a first section extending vertically downward from the top wall, a second section extending horizontally outward following the first section, and a third section extending vertically downward following the second section, and the lower edge of the third section forms the lower edge of the side wall.
[0010] Optionally, the height of the second section exceeds the height of the protrusion, so that a gap is formed between the third section of the side wall and the protrusion and between the second section of the side wall and the protrusion.
[0011] Optionally, above the fixing area, the side wall has a water blocking strip extending vertically upward from the outer edge of the second section for preventing water from flowing from the second section into the fixing area. Thereby, the amount of water accumulated in the fixing area can be reduced.
[0012] Optionally, the water blocking strip extends horizontally beyond the fixing area and then interrupts, so that water can flow down from the second section without falling into the fixing area. Thus, the water blocking strip can not only guide the water away from the fixing area, but also discharge the water from the second section at a position where there is no fixing area.
[0013] The second aspect of the present application is to provide an electronic device, which has a housing as described above, a circuit board assembly disposed in the inner cavity of the housing, and an electrical connector. The electrical connector is installed in an installation opening provided in the wall of the housing and is electrically connected to the circuit board assembly.
[0014] Optionally, the electronic device is an electronic controller for an automotive airbag.
[0015] Different from the housing of traditional electronic devices, the housing of the electronic device as described above does not use a separate seal between its housing components to seal the joint therebetween. Moreover, there is an enlarged gap between the housing components of the housing of the electronic device. Nevertheless, water is still difficult to enter the inner cavity of the housing through the large gap. On the one hand, this saves the cost of the seal and also does not reduce the waterproof effect due to the aging of the seal. On the other hand, it improves the heat dissipation of the electronic device because the inner cavity of the housing is no longer an airtight space. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The embodiments of the present application will be further described in detail below in conjunction with the drawings. However, those skilled in the art will appreciate that these drawings are only for the purpose of explaining the embodiments and should not be construed as limiting the scope of the present application. The following drawings show:
[0017] Figure 1 is a perspective view of an electronic device according to an embodiment of the present application;
[0018] Figure 2 is a perspective view of the electronic device according to an embodiment of the present application in an unassembled state;
[0019] Figure 3 is a top view of the electronic device according to an embodiment of the present application in an assembled state;
[0020] Figure 4 is a bottom view of the electronic device according to an embodiment of the present application in an assembled state;
[0021] Figure 5 is a partial sectional schematic view of the housing of the electronic device according to an embodiment of the present application;
[0022] Figure 6 is a partial sectional schematic view of the housing of the electronic device according to an embodiment of the present application;
[0023] Figure 7 is a partial sectional view of the housing of the electronic device according to an embodiment of the present application; and
[0024] Figure 8It is a partial perspective view of a housing of an electronic device according to an embodiment of the present application. Detailed implementation mode
[0025] Figure 1 A perspective view of an electronic device according to an embodiment of the present application is shown. Here, the electronic device 100 may be an electronic controller for an automotive airbag. However, the present application is not limited to the electronic controller for an automotive airbag, but may relate to any other type of electronic device. As can be seen from Figure 1 it, the electronic device 100 has a housing 50. An electrical connector 30 is installed in the wall of the housing 50, and the electrical connector 30 is electrically connected to a circuit board assembly (not shown) disposed in the inner cavity of the housing 50. In Figure 1 the shown electronic device 100, the electrical connector 30 has two terminal interfaces. However, the electrical connector 30 may also have only one terminal interface or more terminal interfaces as needed.
[0026] Figure 2 A perspective view of the electronic device according to an embodiment of the present application in an unassembled state is shown. Here, it can be seen that the housing 50 of the electronic device 100 has two housing components, namely a main body 10 and a bottom plate 20. The main body 10 has a top wall 11 and side walls 12 extending from the top wall 11. The lower edge 13 of the side walls 12 defines a housing opening (not shown), and the bottom plate 20 can be fixedly connected to the main body 10 to cover the housing opening. As can be seen from Figure 2 it, the bottom plate 20 has four connection positions, and fixing members respectively extend out through holes at the four connection positions from below the bottom plate 20. Although not shown, those skilled in the art can easily understand that the main body 10 also has four connection positions corresponding to the four connection positions of the bottom plate 20, and the fixing members can be respectively screwed into the corresponding holes at the four connection positions of the main body 10, thereby realizing the fixed connection between the main body 10 and the bottom plate 20. Those skilled in the art should understand that the above fixed connection method between the main body 10 and the bottom plate 20 is only exemplary and should not be construed as a limitation on the fixed connection method.
[0027] As can be seen from Figure 2 it, the bottom plate 20 includes a covering area 21 for covering the housing opening. Among them, the periphery of the covering area 21 has a surrounding protrusion 23 protruding from the upper side of the bottom plate 20. In the assembled state, the side walls 12 of the main body 10 surround the covering area 21 of the bottom plate 20 in the circumferential direction. In addition, the bottom plate 20 further includes a fixing area 22 extending from the periphery of the covering area 21 for fixing the electronic device 100. InFigure 2 In the illustrated embodiment, the base plate 20 has three fixing regions 22. However, those skilled in the art can understand that the base plate 20 may also have a different number of fixing regions 22 and is not limited to three fixing regions 22. In the assembled state, the fixing regions 22 extend beyond the side wall 12 of the main body 10 from below the lower edge 13 of the side wall 12 of the main body 10.
[0028] That is to say, the base plate 20 includes two parts, namely a covering region 21 and a fixing region 22. The covering region 21 is only used to cover the housing opening of the main body 10 and is not used to fix the electronic device 100, while the fixing region 22 is not used to cover the housing opening but is used to fix the electronic device 100, such as to fix the electronic device 100 to the installation position. Therefore, the covering region 21 does not extend from the side wall 12 of the main body 10, and only the fixing region 22 extends from the side wall 12 below the lower edge 13 of the side wall 12 of the main body 10.
[0029] Here, the side wall 12 of the main body 10 surrounding the covering region 21 of the base plate 20 in the circumferential direction means that the covering region 21 of the base plate 20 is completely located radially inside the side wall 12 of the main body 10. In addition, the fixing region 22 of the base plate 20 extending beyond the side wall 12 of the main body 10 from below the lower edge 13 of the side wall 12 of the main body 10 means that the fixing region 22 of the base plate 20 extends from radially inside the side wall 12 of the main body 10 to radially outside the side wall 12 of the main body 10.
[0030] Figure 3 The top view of the electronic device in the assembled state according to an embodiment of the present application is shown. From Figure 3 it can be seen that when looking down at the main body 10 from above the main body 10, the covering region 21 of the base plate 20 is completely covered by the main body 10, and only the fixing region 22 of the base plate 20 extends beyond the main body 10.
[0031] Figure 4 The bottom view of the electronic device in the assembled state according to an embodiment of the present application is shown. From Figure 4 it can be seen more clearly that the covering region 21 of the base plate 20 together with its protrusion 23 is completely surrounded by the lower edge 13 of the side wall 12 of the main body 10, that is, completely inside the radial direction of the lower edge 13 of the side wall 12 of the main body 10, while the fixing region 22 of the base plate 20 extends beyond the lower edge 13 of the side wall 12 of the main body 10 to the radial outside of the lower edge 13 of the side wall 12 of the main body 10.
[0032] Here, there is a gap between the side wall 12 of the main body 10 and the protrusion 23, so that the side wall 12 of the main body 10 does not contact the protrusion 23. The size of the gap is such that the water reaching the gap will not rise above the height of the protrusion 23 due to capillary action. The gap will be described in detail below with reference to the accompanying drawings.
[0033] Returning again to Figure 2 , the side wall 12 has a first section 12a extending vertically downward from the top wall 11, a second section 12b extending horizontally outward following the first section 12a, and a third section 12c extending vertically downward following the second section 12b. The lower edge of the third section 12c forms the lower edge 13 of the side wall 12.
[0034] Figure 5 and Figure 6 respectively show partial cross-sectional schematic views of the housing of an electronic device according to an embodiment of the present application. Here, Figure 5 shows a partial cross-sectional schematic view of the housing 50 at a position without the fixing area 22, while Figure 6 shows a partial cross-sectional schematic view of the housing 50 at a position with the fixing area 22.
[0035] From Figure 5 it can be clearly seen that the side wall 12 of the main body 10 has a first section 12a extending vertically downward from the top wall 11, a second section 12b extending horizontally outward following the first section 12a, and a third section 12c extending vertically downward following the second section 12b, and the covering area 21 of the bottom plate 20 ends with a surrounding protrusion 23 protruding from the upper side of the bottom plate 20. From Figure 5 it can be clearly seen that the height of the second section 12b exceeds the height of the protrusion 23, so that a gap is formed between the third section 12c of the side wall 12 and the protrusion 23 and between the second section 12b of the side wall 12 and the protrusion 23. Figure 5A smaller gap is shown on the left side, while a larger gap is shown on the right side. When the gap is too small, due to capillary action, water will rise when it reaches the gap until it exceeds the height of the protrusion 23, and then cross over the protrusion 23 and enter the interior of the housing 50. Therefore, even if the side wall 12 of the main body 10 is in close contact with the protrusion 23 of the bottom plate 20, due to the existence of surface unevenness, it is inevitable that there will be a small gap between the side wall 12 and the protrusion 23. Thus, the water reaching the gap will rise due to capillary action until it exceeds the height of the protrusion 23, and then cross over the protrusion 23 and enter the interior of the housing 50. In the prior art, in order to avoid this, an additional seal is usually used between the side wall 12 of the main body 10 and the bottom plate 20. However, different from the prior art, here a separate seal can no longer be used, but instead, the gap between the side wall 12 of the main body 10 and the bottom plate 20 is enlarged, especially the gap between the third section 12c of the side wall 12 and the protrusion 23. Surprisingly, although there is no longer a seal between the main body 10 and the bottom plate 20 and there is a larger gap at this time, it is still difficult for water to reach the interior of the housing 50 through the gap. Thus, a good waterproof effect is achieved. Here, the size of the gap can be designed to be, for example, 1 mm - 4 mm.
[0036] Figure 6 shows a view similar to Figure 5 However, different from Figure 5 here, the bottom plate 20 has a fixing area 22 extending from the periphery of the covering area 21 for fixing the electronic device 100. There is a gap between the side wall 12 of the main body 10 and the fixing area 22, so that the lower edge 13 of the side wall 12 of the main body 10 does not contact the fixing area 22 of the bottom plate 20. Water is likely to accumulate in the fixing area 22, and thus water is more likely to enter the interior of the housing 50 through the gap. By enlarging the size of the gap, it is effectively avoided that water crosses over the protrusion 23 and enters the interior of the housing 50 due to capillary action.
[0037] Nevertheless, in order to reduce the amount of water accumulated in the fixing area 22, in Figure 6 the illustrated embodiment, above the fixing area 22, the side wall 12 has a water retaining strip 14 extending vertically upward from the outer edge of the second section 12b for preventing water from flowing from the second section 12b to the fixing area 22.
[0038] Figure 7 shows a partial cross-sectional view of the housing of an electronic device according to an embodiment of the present application. Here, a cross-sectional view showing the position of the fixing area 22 is shown. From Figure 7It can be clearly seen that there is an enlarged gap between the third section 12c of the side wall 12 of the main body 10 and the protrusion 23 of the bottom plate 20, and a water retaining strip 14 is provided above the fixed area 22. Here, the water retaining strip 14 extends vertically upward from the outer edge of the second section 12b. Thus, the water accumulated on the second section 12b will not flow into the fixed area 22, thereby alleviating the water accumulation in the fixed area 22 to a certain extent.
[0039] Figure 8 A partial perspective view of a housing of an electronic device according to an embodiment of the present application is shown. The position of the fixed area 22 is also shown here. From Figure 8 It can be clearly seen that the water retaining strip 14 extends horizontally beyond the fixed area 22 and then interrupts. Here, the water retaining strip 14 guides the water away from the fixed area 22, so that the water can flow down from the second section 12b outside the fixed area 22 without falling into the fixed area 22.
[0040] The above are only exemplary embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solutions falling within the concept of the present application belong to the protection scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements should also be regarded as within the protection scope of the present application.
Claims
1. A housing (50) for an electronic device (100), the housing (50) comprising: A main body (10), the main body (10) having a top wall (11) and a side wall (12) extending from the top wall (11), wherein a lower edge (13) of the side wall (12) defines a housing opening; as well as a bottom plate (20), the bottom plate (20) being fixedly connected to the main body (10) to cover the housing opening, It is characterized in that The bottom plate (20) comprises a covering area (21) for covering the shell opening, wherein the periphery of the covering area (21) has a circumferential protrusion (23) protruding from the upper side of the bottom plate (20), the side wall (12) of the main body (10) surrounds the covering area (21) of the bottom plate (20) in the circumferential direction, and there is a gap between the side wall (12) of the main body (10) and the protrusion (23), so that the side wall (12) of the main body (10) is not in contact with the protrusion (23), wherein the size of the gap is such that water reaching the gap will not rise to a height exceeding the protrusion (23) due to capillary action.
2. The housing (50) according to claim 1, characterized in that The size of the gap is 1mm-4mm.
3. The housing (50) according to claim 1, characterized in that The bottom plate (20) comprises a fixing area (22) extending from the periphery of the covering area (21) for fixing the electronic device (100), wherein the fixing area (22) extends from below the lower edge (13) of the side wall (12) of the main body (10) and beyond the side wall (12) of the main body (10).
4. The housing (50) according to claim 3, characterized in that There is a gap between the side wall (12) of the main body (10) and the fixing area (22), so that the lower edge (13) of the side wall (12) of the main body (10) does not contact the fixing area (22) of the bottom plate (20).
5. The housing (50) according to claim 3, characterized in that: The side wall (12) comprises a first section (12a) extending vertically downward from the top wall (11), a second section (12b) extending horizontally outward as a continuation of the first section (12a), and a third section (12c) extending vertically downward as a continuation of the second section (12b), wherein the lower edge of the third section (12c) forms the lower edge (13) of the side wall (12).
6. The housing (50) according to claim 5, characterized in that The height of the second section (12b) exceeds the height of the protrusion (23), thereby forming a gap between the third section (12c) of the side wall (12) and the protrusion (23) and between the second section (12b) of the side wall (12) and the protrusion (23).
7. The housing (50) according to claim 5, characterized in that Above the fixing area (22), the side wall (12) has a water retaining strip (14) extending vertically upward from the outer edge of the second section (12b) for preventing water from flowing from the second section (12b) into the fixing area (22).
8. The housing (50) according to claim 7, characterized in that The water retaining strip (14) extends in the horizontal direction to beyond the fixing area (22) and then is interrupted, so that water can flow down from the second section (12b) without falling into the fixing area (22).
9. An electronic device (100), characterized in that: The electronic device (100) comprises: A housing (50) according to any one of claims 1 to 8; A circuit board assembly disposed in the inner cavity of the housing (50); as well as An electrical connector (30) is installed in a mounting opening arranged in a wall of the housing (50) and is electrically connected to the circuit board assembly.
10. The electronic device (100) according to claim 9, characterized in that: The electronic device (100) is an electronic controller for an automobile safety airbag.