Shell for electronic equipment and electronic equipment
By constructing a step on the side of the bottom plate of the electronic device housing facing the side wall and setting a drainage hole, the problems of water seepage and heat dissipation noise of the shell are solved, and the waterproofing effect without seals is achieved, and the waterproofness and heat dissipation performance of the electronic device are improved.
Patent Information
- Application Number
- CN202422063706.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The shells of existing electronic equipment are prone to water seepage in the joints, the use of seals increases complexity and the sealing effect is reduced after aging, and water accumulation inside the shell damages the circuit board components, and the problems of heat dissipation and noise have not been effectively solved.
A housing structure is designed, wherein the bottom plate has a side surrounding the protrusion and the protrusion faces the side wall as a step, the gap between the protrusion and the side wall is partially expanded, and a drainage hole is provided on the steps, the bottom plate does not contact the side wall to form a non-confined space, and drainage is drained using capillary action.
Even without seals, it can prevent water from entering the housing, improve heat dissipation and reduce noise, avoid circuit board damage, save seal costs and avoid reduced sealing effect caused by aging of seals.
Smart Images
Figure CN223157356U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a housing for an electronic device and an electronic device. Background Art
[0002] There are various electronic devices in modern vehicles, 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 in at 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. Summary of the Utility Model
[0003] The purpose of this application is to solve or at least alleviate at least some of the problems existing in the prior art.
[0004] The first aspect of this 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, the 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. Here, inside the side walls, the bottom plate has a surrounding protrusion protruding from the upper side of the bottom plate, wherein the side of the protrusion facing the side walls is configured to include a step.
[0005] Optionally, there is a gap between the inner surface of the side walls and the side of the protrusion facing the side walls and / or between the lower edge of the side walls and the bottom plate.
[0006] The surrounding protrusion can, to a certain extent, prevent water from passing over the protrusion and entering the interior of the housing. However, when there is a very small gap between the side of the protrusion facing the side walls and the side walls of the main body, water will still rise above the protrusion and enter the interior of the housing due to capillary action, thus there is a risk of damaging electronic components such as circuit board assemblies inside the housing. By configuring the side of the protrusion facing the side walls to include a step, the gap between the protrusion and the side walls is at least partially enlarged, thereby preventing water from rising above the height of the protrusion due to capillary action. Thus, even without using a seal, water can be prevented from entering the interior of the housing.
[0007] Optionally, one side of the protrusion configured to include a step includes at least one step, and at least one drainage hole is provided on the step for guiding water reaching the step from the upper side of the bottom plate to the lower side of the bottom plate. Thus, even if water rises to the step due to capillary action, the water reaching the step can be discharged from the upper side of the bottom plate to the lower side of the bottom plate through the drainage hole.
[0008] Optionally, a plurality of drainage holes are arranged in a circumferential distribution on the step. Thus, the water reaching the step can be quickly discharged to the lower side of the bottom plate, avoiding water accumulation on the step.
[0009] Optionally, the bottom plate extends beyond the side wall below the lower edge of the side wall, and outside the protrusion, the bottom plate has additional drainage holes for guiding water reaching the bottom plate from the upper side of the bottom plate to the lower side of the bottom plate. Thus, the water can be discharged from the upper side of the bottom plate to the lower side of the bottom plate before the water can rise by capillary action.
[0010] Optionally, the side wall does not contact the bottom plate.
[0011] Through the gap between the side wall and the bottom plate, a sealed space is no longer formed inside the housing. Thus, the heat generated by the electronic devices inside the housing can be discharged, thereby improving the heat dissipation of the electronic device. By making the side wall not contact the bottom plate, the noise generated between the main body and the bottom plate can be avoided or at least reduced.
[0012] Optionally, the top wall or the side wall of the main body includes a mounting opening, and an electrical connector can be mounted in the mounting opening.
[0013] Optionally, inside the protrusion, the bottom plate has a plurality of fixing holes, and the top wall of the main body has a plurality of fixing posts respectively corresponding to the fixing holes. Threaded fasteners can pass through the fixing holes from below the bottom plate and be screwed into the threaded holes of the corresponding fixing posts, thereby fixedly connecting the main body and the bottom plate.
[0014] 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, and the electrical connector is mounted in a mounting opening provided in the wall of the housing and is electrically connected to the circuit board assembly.
[0015] Optionally, the electronic device is an electronic controller for an automotive airbag.
[0016] Unlike 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 joints between them. Moreover, there may even be gaps between the housing components of the housing of the electronic device. Nevertheless, it is still difficult for water to enter the inner cavity of the housing through the gaps. 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, the existence of the gaps also improves the heat dissipation of the electronic device because the inner cavity of the housing is no longer a closed space. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The embodiments of the present application will be further described in detail below with reference to 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 drawings show:
[0018] Figure 1 is a perspective view of an electronic device in an assembled state according to an embodiment of the present application;
[0019] Figure 2 is a perspective view of an electronic device in an unassembled state according to an embodiment of the present application;
[0020] Figure 3 is a perspective view of the bottom plate of the housing of an electronic device according to an embodiment of the present application;
[0021] Figure 4 is a partial cross-sectional view of the housing of an electronic device according to an embodiment of the present application;
[0022] Figure 5 is a partially enlarged view of the bottom plate of the housing of an electronic device according to an embodiment of the present application;
[0023] Figure 6 is a top view of the bottom plate of the housing of an electronic device according to an embodiment of the present application; and
[0024] Figure 7 is a partial cross-sectional view of the housing of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Figure 1 shows a perspective view of an electronic device in an assembled state according to an embodiment of the present application and Figure 2FIG. 0 shows a perspective view of an electronic device in an unassembled state according to an embodiment of the present application. Here, the electronic device 100 may be an electronic controller for an automotive airbag. However, the present application is not limited to an electronic controller for an automotive airbag, but may relate to any other type of electronic device. As Figure 1 and Figure 2 shown, the electronic device 100 has a housing 50, a circuit board assembly 40 disposed in the inner cavity of the housing 50, and an electrical connector 30. The electrical connector 30 is installed in an installation opening provided in the wall of the housing 50 and is electrically connected to the circuit board assembly 40. In Figure 1 and Figure 2 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] In addition, as can be clearly seen from Figure 1 and Figure 2 , the housing 50 includes 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. The bottom plate 20 can be fixedly connected to the main body 10 to cover the housing opening. In Figure 1 and Figure 2 the shown embodiment, the side walls 12 of the main body 10 include installation openings in which the electrical connector 30 can be installed. However, alternatively, the installation openings can also be provided in the top wall 11 of the main body 10. After the electrical connector 30 is installed in the installation opening, the electrical connector 30 closes the installation opening in the side walls 12.
[0027] In addition, as can be clearly seen from Figure 2 , the bottom plate 20 has a surrounding protrusion 21 protruding from the upper side of the bottom plate 20. In the assembled state, the protrusion 21 is located inside the side walls 12. Therefore, in Figure 1 , the protrusion 21 is completely covered by the main body 10 and cannot be seen. Such a protrusion 21 can not only strengthen the bottom plate 20, but also block water from entering the interior of the housing 50 to a certain extent.
[0028] Returning to Figure 2 again, it can be seen that inside the protrusion 21, the bottom plate 20 has a plurality of fixing holes 24. In Figure 2 the shown embodiment, four fixing holes 24 are provided. However, the number of fixing holes 24 can also be different from Figure 2The embodiment shown. In addition, the top wall 11 of the main body 10 has a plurality of fixing posts 14 respectively corresponding to the fixing holes 24. In Figure 2 the embodiment shown, four threaded fasteners can pass through the fixing holes 24 from below the bottom plate 20 and be screwed into the threaded holes of the corresponding fixing posts 14, thereby fixedly connecting the main body 10 and the bottom plate 20. In addition, the threaded fasteners also additionally pass through the corresponding holes provided in the circuit board assembly 40, whereby the circuit board assembly 40 can also be additionally fixed when assembling the housing 50.
[0029] Figure 3 Fig. shows a perspective view of the bottom plate of the housing of an electronic device according to an embodiment of the present application. From Figure 3 it can be seen more clearly the protrusions 21 of the bottom plate 20 and the arrangement of the fixing holes 24.
[0030] Figure 4 Fig. shows a partial cross-sectional view of the housing of an electronic device according to an embodiment of the present application. From Figure 4 it can be seen that there is a gap between the inner surface of the side wall 12 and the side of the protrusion 21 facing the side wall 12. Such a gap may be very small, which may cause the problem that water may rise in the gap due to capillary action, and thus there is a risk that water may cross the protrusion 21 and enter the interior of the housing 50.
[0031] In order to prevent water from crossing the protrusion 21 and entering the interior of the housing 50 due to capillary action, the side of the protrusion 21 facing the side wall 12 is configured to include a step, as Figure 5 shown. In Figure 5 the embodiment shown, the side of the protrusion 21 configured to include a step includes a first-level step 22. However, alternatively, the side of the protrusion 21 configured to include a step may also include more levels of steps 22.
[0032] Figure 7 Fig. shows a partial cross-sectional view of the housing of an electronic device according to an embodiment of the present application. Here, it can be clearly seen the positional relationship between the side of the protrusion 21 of the bottom plate 20 configured to include a step and the side wall 12 of the main body 10. By configuring the side of the protrusion 21 facing the side wall 12 to include a step, above the step 22, the gap between the protrusion 21 and the side wall 12 is enlarged. When there are multiple levels of steps 22, the gap between the protrusion 21 and the side wall 12 is enlarged step by step from bottom to top. Thus, even if water reaches the step 22 through capillary action, it cannot further rise by capillary action beyond the protrusion 21 and enter the interior of the housing 50.
[0033] Returning again toFigure 5 , it can be clearly seen that drain holes 23 are provided on the step 22 for guiding the water reaching the step 22 from the upper side of the bottom plate 20 to the lower side of the bottom plate 20. Thereby, water accumulation on the step 22 is avoided. Optionally, a plurality of drain holes 23 may be arranged in a circumferential distribution on the step 22. As Figure 6 shown, a total of eight drain holes 23 are provided on the step 22 of the protrusion 21. However, this is merely exemplary, and different numbers of drain holes 23 may also be provided on the step 22 of the protrusion 21. When there are multiple steps 22, corresponding drain holes 23 may be provided on each step 22.
[0034] In addition, as Figure 1 shown, the bottom plate 20 may extend beyond the side wall 12 below the lower edge 13 of the side wall 12. It can also be clearly seen in Figure 4 and Figure 7 that the bottom plate 20 extends beyond the side wall 12 below the lower edge 13 of the side wall 12, and there may be a gap between the lower edge 13 of the side wall 12 and the bottom plate 20. Optionally, the gap existing between the side wall 12 and the bottom plate 20 enables the side wall 12 not to contact the bottom plate 20. Through the gap between the side wall 12 and the bottom plate 20, a sealed space is no longer formed inside the housing 50. Thus, the heat generated by the electronic devices inside the housing 50 can be discharged, thereby improving the heat dissipation of the electronic device 100. By making the side wall 12 not contact the bottom plate 20, the noise generated between the main body 10 and the bottom plate 20 can also be avoided or at least reduced.
[0035] Although not shown in the figures, optionally, outside the protrusion 21, the bottom plate 20 has additional drain holes for guiding the water reaching the bottom plate 20 from the upper side of the bottom plate 20 to the lower side of the bottom plate 20. Thereby, the water can be discharged from the upper side of the bottom plate 20 to the lower side of the bottom plate 20 before the water can rise by capillary action.
[0036] The above description is only an exemplary embodiment of the present application, and the protection scope of the present application is not limited to the above embodiments. All 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 in this technical field, several improvements and refinements made without departing from the principle of the present application 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 side walls (12) extending from the top wall (11), a lower edge (13) of the side walls (12) defining a housing opening; And A bottom plate (20), the bottom plate (20) being fixedly connected to the main body (10) to cover the housing opening, Characterized in that Inside the side walls (12), the bottom plate (20) has a surrounding protrusion (21) protruding from the upper side of the bottom plate (20), wherein a side of the protrusion (21) facing the side walls (12) is configured to include a step.
2. The housing (50) according to claim 1, characterized in that, There is a gap between the inner surface of the side walls (12) and the side of the protrusion (21) facing the side walls (12) and / or between the lower edge (13) of the side walls (12) and the bottom plate (20).
3. The housing (50) according to claim 1, characterized in that, The side of the protrusion (21) configured to include a step includes at least one step (22), and at least one drain hole (23) is provided on the step (22) for guiding water reaching the step (22) from the upper side of the bottom plate (20) to the lower side of the bottom plate (20).
4. The housing (50) according to claim 3, characterized in that, A plurality of drain holes (23) are arranged in a circumferential distribution on the step (22).
5. The housing (50) according to claim 1, characterized in that, The bottom plate (20) extends beyond the side walls (12) below the lower edge (13) of the side walls (12), and outside the protrusion (21), the bottom plate (20) has additional drain holes for guiding water reaching the bottom plate (20) from the upper side of the bottom plate (20) to the lower side of the bottom plate (20).
6. The housing (50) according to any one of claims 1 to 5, characterized in that, The side walls (12) do not contact the bottom plate (20).
7. The housing (50) according to any one of claims 1 to 5, characterized in that, The top wall (11) or the side walls (12) of the main body (10) include mounting openings, and an electrical connector (30) can be mounted in the mounting openings.
8. The housing (50) according to any one of claims 1 to 5, characterized in that, Inside the protrusion (21), the bottom plate (20) has a plurality of fixing holes (24), and the top wall (11) of the main body (10) has a plurality of fixing posts (14) respectively corresponding to the fixing holes (24). Threaded fasteners can pass through the fixing holes (24) from below the bottom plate (20) and be screwed into threaded holes of the corresponding fixing posts (14), thereby fixedly connecting the main body (10) and the bottom plate (20).
9. An electronic device (100), characterized in that, The electronic device (100) has: The housing (50) according to any one of claims 1 to 8; A circuit board assembly (40) disposed in the inner cavity of the housing (50); and An electrical connector (30), the electrical connector (30) being mounted in a mounting opening provided in the wall of the housing (50) and electrically connected to the circuit board assembly (40).
10. The electronic device (100) according to claim 9, characterized in that, The electronic device (100) is an electronic controller for an automotive airbag.