Heat dissipation waterproof assembly, vehicle-mounted device and vehicle

Abstract

The utility model discloses a heat dissipation waterproof assembly, a vehicle-mounted device and a vehicle, the heat dissipation waterproof assembly comprises a shell and a heat dissipation piece, the outer wall of the shell is provided with a mounting groove, the heat dissipation piece is arranged in the mounting groove, the inner wall of the mounting groove is provided with a through hole, the through hole is communicated with a circuit board in the shell, and the heat dissipation piece is arranged in the mounting groove. A first groove is formed in the inner wall of the mounting groove around the through hole, a first sealing piece is arranged in the first groove, and the heat dissipation piece is pressed against the through hole and the first sealing piece; the inner wall of the mounting groove can also be provided with a drain hole, and the drain hole is communicated with the outside of the shell; the heat dissipation piece can comprise an air cooling heat dissipation piece, the air cooling heat dissipation piece comprises a fan and heat dissipation fins, the fan abuts against the through hole and the first sealing piece in a pressing mode, and the through hole, the first groove and the fan can be round. The heat dissipation waterproof assembly is high in waterproof reliability, the production time can be shortened, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted devices, in particular to a heat dissipation and waterproof component, a vehicle-mounted device and a vehicle. Background Art

[0002] Part of the heat dissipation of the existing housing with a circuit board inside is through an external fan and air duct, and the circuit board also needs to be waterproofed during heat dissipation.

[0003] The existing waterproof structure usually uses a waterproof rubber ring sleeved on the fan wire harness, and the wire harness passes through the opening on the housing and is inserted into the connector on the circuit board, or uses an opening in the air duct inside the housing to pass the wire harness, adding a waterproof retaining wall at the opening, and then covering the opening with a fan cover plate. Regarding using a waterproof rubber ring sleeved on the fan wire harness, there are the following defects: a relatively large hole needs to be opened on the housing to pass through the wire harness connector, which makes the housing structure complicated; the waterproof rubber ring needs to be installed manually, and the installation is troublesome, increasing the production man-hours; water is likely to seep into the housing interior from the mating hole between the wire harness and the waterproof rubber ring, resulting in waterproof failure. Regarding adding an opening in the air duct inside the housing to pass the wire harness and adding a waterproof retaining wall at the opening, there are the following problems: the wire harness opening needs to be arranged inside the air duct, and water is likely to accumulate at the fan, requiring a higher waterproof requirement for the fan, increasing the cost. Summary of the Utility Model

[0004] In order to solve at least one of the problems mentioned in the above background art, the utility model provides a heat dissipation and waterproof component, a vehicle-mounted device and a vehicle, wherein the heat dissipation and waterproof component has high waterproof reliability, and at the same time can shorten the production man-hours and reduce the cost.

[0005] The specific technical solution provided by the utility model is as follows:

[0006] In a first aspect, a heat dissipation and waterproof component is provided, including a housing and a heat dissipation member. An installation groove is provided on the outer wall of the housing, the heat dissipation member is arranged in the installation groove, through holes are provided on the inner wall of the installation groove, the through holes are communicated with the circuit board inside the housing, first grooves are provided on the inner wall of the installation groove around the through holes, first sealing members are arranged in the first grooves, and the heat dissipation member is pressed against the through holes and the first sealing members.

[0007] With the above technical solution, the utility model improves the heat dissipation efficiency inside the housing by arranging a heat dissipation component in the installation groove on the outer wall of the housing. This not only reduces the water ingress and dust accumulation inside the housing, but also features a small noise, low air inlet and outlet resistance, long service life of the heat dissipation component, and small volume of the entire housing. By providing through holes, the wire harness of the heat dissipation component can pass through the through holes and be inserted into the connector on the circuit board, which facilitates the connection of the wire harness of the heat dissipation component. By providing the first sealing member, the accumulated water in the installation groove can be prevented from seeping into the housing through the through holes, effectively improving the waterproof ability of the housing, eliminating the installation tooling for the waterproof rubber ring on the wire harness, simplifying the production process, shortening the production time, and reducing the cost.

[0008] As a preference of the above solution, a drain hole is provided on the inner wall of the installation groove, and the drain hole communicates with the outside of the housing. According to the above solution, the arrangement of the drain hole can prevent water accumulation in the installation groove at the heat dissipation component, thereby reducing the requirement for the waterproof performance of the heat dissipation component.

[0009] As a preference of the above solution, the heat dissipation component includes an air-cooled heat dissipation component, which includes a fan and heat dissipation fins. The fan and the heat dissipation fins are arranged adjacent to each other, and the fan is arranged adjacent to the drain hole. According to the above solution, the fan operates to dissipate heat inside the housing, and the heat dissipation fins can increase the heat dissipation area and improve the heat dissipation ability. The fan wire harness of the fan can pass through the through hole and be inserted into the connector on the circuit board, which facilitates the connection of the fan wire harness.

[0010] As a preference of the above solution, the fan presses against the through hole and the first sealing member. According to the above solution, the fan pressing against the through hole and the first sealing member can effectively achieve the sealing and waterproofing at the through hole.

[0011] As a preference of the above solution, the through hole, the first groove, and the fan are all circular, and the diameters of the through hole, the first groove, and the fan increase in sequence. According to the above solution, the circular through hole, first groove, and fan can save space and improve the waterproof performance of the housing at the same time.

[0012] As a preference of the above solution, the air-cooled heat dissipation component further includes a fan cover plate, which is provided with a fan through groove and a fin through groove. The fan through groove corresponds to the fan, and the fin through groove corresponds to the heat dissipation fins. The fan cover plate is fixed on the installation groove. According to the above solution, the fan cover plate protects the fan and the heat dissipation fins. The settings of the fan through groove and the fin through groove enable smooth air inlet and outlet when the fan works, and form an air duct in combination with the heat dissipation fins, and the heat generated by the operation of the circuit board is taken away by the operation of the fan.

[0013] As a preference of the above solution, the heat dissipation and waterproof component further includes a battery cover plate. A battery compartment is provided on the outer wall of the housing. A battery is provided in the battery compartment. Second grooves are provided on the inner wall of the battery compartment around the battery. Second seals are provided in the second grooves. The battery cover plate presses against the battery and the second seals. According to the above solution, the arrangement of the second seals can prevent the accumulated water in the battery compartment from seeping into the housing, and adopts the same waterproof design as the first seals, simplifies the production process, shortens the production man-hours, and further improves the waterproof ability of the housing.

[0014] As a preference of the above solution, the heat dissipation and waterproof component further includes an upper cover. The upper cover is fixed on the housing. A circuit board, a chip and an internal antenna are provided in the cavity formed by the housing and the upper cover. A third seal is provided between the housing and the upper cover. The third seal is arranged around the circuit board. According to the above solution, the arrangement of the third seals can prevent external water from seeping into the housing, and adopts the same waterproof design as the first seals and the second seals, simplifies the production process, shortens the production man-hours, and further improves the waterproof ability of the housing.

[0015] In a second aspect, a vehicle-mounted device is provided, including the above heat dissipation and waterproof component, as well as a circuit board, a chip, an internal antenna and a battery. Among them, the heat dissipation and waterproof component includes a housing. An installation groove is provided on the outer wall of the housing. The chip and the internal antenna are arranged on the circuit board. The circuit board, the chip and the internal antenna are arranged in the housing. The battery is arranged in the battery compartment of the housing.

[0016] As a preference of the above solution, the housing includes a metal part and a plastic part. The outer wall of the housing includes the outer wall of the metal part and the outer wall of the plastic part. The installation groove is provided on the outer wall of the metal part. The metal part corresponds to the chip. The plastic part corresponds to the internal antenna. According to the above solution, by arranging the housing with a metal part and a plastic part, when the chip generates heat during operation, it can dissipate heat through the cooperation of the metal part and the air-cooling heat dissipation component, improving the heat dissipation effect of the chip. At the same time, when the internal antenna works, the plastic part will not affect the performance of the internal antenna.

[0017] In a third aspect, a vehicle is provided, including the above vehicle-mounted device.

[0018] The vehicle-mounted device of the present utility model is assembled on a vehicle. The circuit board and the chip are responsible for processing signals, so as to realize the signal interaction control of the vehicle. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for description in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of Embodiment 1 of the present utility model;

[0021] Figure 2 For Figure 1 Enlarged structural schematic diagram at position A in

[0022] Figure 3 Structural schematic diagram of the decomposition of the housing and the fan in Embodiment 1 of the present utility model;

[0023] Figure 4 Structural schematic diagram of the decomposition of the housing and the upper cover in Embodiment 1 of the present utility model;

[0024] Figure 5 Structural schematic diagram of the decomposition of the housing and the battery cover plate in Embodiment 1 of the present utility model;

[0025] Figure 6 Overall structural schematic diagram of Embodiment 2 of the present utility model;

[0026] Figure 7 Explosion structural schematic diagram of Embodiment 2 of the present utility model. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] Embodiment 1

[0029] Such as Figures 1 to 5As shown in the figure, the present utility model provides a heat dissipation and waterproof component, including a housing 1 and a heat dissipation member. An installation groove 11 is provided on the outer wall of the housing 1, the heat dissipation member is arranged in the installation groove 11, a through hole 111 is provided on the inner wall of the installation groove 11, the through hole 111 communicates with a circuit board 2 inside the housing 1, a first groove 112 is provided on the inner wall of the installation groove 11 around the through hole 111, a first sealing member 41 is arranged in the first groove 112, and the heat dissipation member is pressed against the through hole 111 and the first sealing member 41. A drain hole 113 is provided on the inner wall of the installation groove 11, and the drain hole 113 communicates with the outside of the housing 1. The arrangement of the drain hole 113 can prevent water from accumulating in the installation groove 11 at the position of the heat dissipation member, thereby reducing the requirement for the waterproof performance of the heat dissipation member. The first sealing member 41 in this embodiment is sealant, there are several drain holes 113, a hollowed-out portion 12 is provided on the outer wall of the housing 1, the hollowed-out portion 12 is arranged adjacent to the side wall of the installation groove 11, the drain hole 113 communicates with the hollowed-out portion 12, and the arrangement of the hollowed-out portion 12 makes it easier for the drain hole 113 to drain the accumulated water in the installation groove 11 to the outside of the housing 1.

[0030] The heat dissipation component includes an air-cooled heat dissipation component 3. The air-cooled heat dissipation component 3 includes a fan 31 and heat dissipation fins 32. The fan 31 and the heat dissipation fins 32 are arranged adjacent to each other. The fan 31 is arranged adjacent to the drain hole 113. The bottom of the fan 31 is flat, and the bottom of the fan 31 presses tightly on the first seal 41 to achieve waterproofing. The fan 31 operates to dissipate heat inside the housing 1. The heat dissipation fins 32 can increase the heat dissipation area and improve the heat dissipation capacity. In this embodiment, the fan 31 is fixed to the inner wall of the installation groove 111 by screws, and longer heat dissipation fins 32 are formed on the inner wall of the installation groove 111. The fan 31 presses against the through hole 111 and the first seal 41. The fan 31 pressing against the through hole 111 and the first seal 41 can effectively achieve sealing and waterproofing at the through hole 111. The fan 31 includes a fan body (not shown) and a fan base (not shown). The fan base presses against the through hole 111 and the first seal 41. The cross-section of the fan body is generally circular. The cross-sections of the fan base, the through hole 111, and the first groove 112 can be circular, oval, or polygonal, circular-polygonal, or other shapes. In this embodiment, the cross-sections of the through hole 111, the first groove 112, and the fan 31 are all circular, and the circular diameters of the cross-sections of the through hole 111, the first groove 112, and the fan 31 increase in sequence. The through hole 111, the first groove 112, and the fan base with circular cross-sections can save space and improve the waterproof performance of the housing 1 at the same time. The air-cooled heat dissipation component 3 further includes a fan cover 33. The fan cover 33 is provided with a fan through groove 331 and a fin through groove 332. The fan through groove 331 corresponds to the fan 31, and the fin through groove 332 corresponds to the heat dissipation fins 32. The fan cover 33 is fixed to the installation groove 11. In this embodiment, the fan cover 33 is made of a metal material. The high thermal conductivity of the metal material is beneficial to heat dissipation. The fan cover 33 is fixed to the installation groove 11 by screws, and the fan cover 33 covers the fan 31 and the heat dissipation fins 32. The fan cover 33 protects the fan 31 and the heat dissipation fins 32. The settings of the fan through groove 331 and the fin through groove 332 enable smooth air intake and exhaust when the fan 31 operates, and form an air duct in combination with the heat dissipation fins 32, and the heat inside the housing 1 is taken away by the operation of the fan 31.

[0031] The heat dissipation and waterproof component further includes a battery cover plate 6. A battery compartment 13 is provided on the outer wall of the housing 1. A battery 5 is provided in the battery compartment 13. Second grooves 131 are provided on the inner wall of the battery compartment 13 around the battery 5. Second seals 42 are provided in the second grooves 131. The battery cover plate 6 is pressed against the battery and the second seals 42. The provision of the second seals 42 can prevent the accumulated water in the battery compartment 13 from seeping into the housing 1, and adopts the same waterproof design as the first seals 42, simplifies the production process, shortens the production man-hours, and further improves the waterproof ability of the housing 1. The second seals 42 in this embodiment are sealants. The battery 5 is provided with a battery wiring harness 51. A wiring harness hole 132 is provided on the battery compartment 13. The wiring harness hole 132 communicates with the circuit board 2. The battery cover plate 6 is fixed to the second grooves 131 by screws. The heat dissipation and waterproof component further includes an upper cover 7. The upper cover 7 is fixed to the housing 1. A circuit board 2, a chip 8, and an internal antenna 9 are provided in the cavity formed by the housing 1 and the upper cover 7. A third seal 43 is provided between the housing 1 and the upper cover 7. The third seal 43 is provided around the circuit board 2. The provision of the third seal 43 can prevent external water from seeping into the housing 1, and adopts the same waterproof design as the first seals 41 and the second seals 42, simplifies the production process, shortens the production man-hours, and further improves the waterproof ability of the housing 1. The third seals 43 in this embodiment are sealants.

[0032] In the present utility model, an air-cooled heat dissipation component 3 is provided in the installation groove 11 on the outer wall of the housing 1. In this way, not only can the heat dissipation efficiency inside the housing 1 be improved, but also the ingress of water and dust inside the housing 1 can be reduced. At the same time, the external air-cooled heat dissipation component 3 has low noise, small air inlet and outlet resistance, a long service life, and the overall volume of the housing 1 is small; by providing a through hole 111, the fan wiring harness 311 of the fan 31 can pass through the through hole 111 and be inserted into the connector on the circuit board 2, which is convenient for connecting the fan wiring harness 311 on the production line. By providing the first seal 41, the accumulated water in the installation groove 11 can be prevented from seeping into the housing 1 through the through hole 111, effectively improving the waterproof ability of the housing 1, and eliminating the installation tooling for waterproof rubber rings, simplifying the production process, shortening the production man-hours, and reducing costs.

[0033] Embodiment 2

[0034] As Figures 6 to 7As shown in the figure, the present utility model provides a vehicle-mounted device, which may be a vehicle-mounted control host or other vehicle-mounted devices. Other vehicle-mounted devices include information navigation devices, safety monitoring devices, entertainment interconnection devices, charging devices, etc. Information navigation devices include vehicle-mounted navigators, driving recorders, GPS navigators, etc. Safety monitoring devices include reverse radars, reverse cameras, driving recorders, etc. Entertainment interconnection devices include vehicle-mounted audio systems, vehicle-mounted entertainment screens, vehicle-mounted TVs, etc. Charging devices include vehicle-mounted chargers, vehicle-mounted power supplies, etc. The vehicle-mounted device includes the above-mentioned heat dissipation and waterproof component, as well as a circuit board 2, a chip 8, an internal antenna 9, and a battery 5. Among them, the heat dissipation and waterproof component includes a housing 1. An installation groove 11 is provided on the outer wall of the housing 1. The chip 8 and the internal antenna 9 are arranged on the circuit board 2. The circuit board 2, the chip 8, and the internal antenna 9 are arranged inside the housing 1. The battery 5 is arranged in the battery compartment 13 of the housing 1.

[0035] In the electronic and electrical system of a vehicle, a circuit board 2 (PCB, PCBA) is usually required to implement some functions of vehicle signal interaction and processing. A chip 8 is generally arranged on the circuit board 2. The chip 8 generates heat during operation and needs to be cooled. At the same time, waterproofing needs to be achieved for the circuit board 2 and the chip 8 during heat dissipation. The heat dissipation and waterproof component in this embodiment can dissipate heat and achieve waterproofing for the circuit board 2 and the chip 8.

[0036] The housing 1 includes a metal part 14 and a plastic part 15. The outer wall of the housing 1 includes the outer wall of the metal part 14 and the outer wall of the plastic part 15. The installation groove 11 is provided on the outer wall of the metal part 14. The metal part 14 corresponds to the chip 8, and the plastic part 15 corresponds to the internal antenna 9. By setting the housing 1 with a metal part 14 and a plastic part 15, when the chip 8 generates heat during operation, it can be cooled by the metal part 14 in cooperation with the air-cooling radiator 3, improving the heat dissipation effect of the chip 8. At the same time, when the internal antenna 9 works, the plastic part 15 will not affect the performance of the internal antenna 9. In this embodiment, the housing 1 is half metal part 14 and half plastic part 15. The metal part 11 and the plastic part 12 are divided along the length direction of the housing 1. When manufacturing the housing 1, the metal part 14 is first die-cast. After the metal part 14 is formed, it is placed in the mold of the plastic part 15 and injection-molded. The metal part 14 and the plastic part 15 are injection-molded with inserts, and an interlaced combination is adopted at the combined position to increase the bonding force. A part of the plastic part 15 corresponds to the internal antenna 9, and a battery compartment 13 is provided on the outer wall of the other part. A battery 5 is arranged in the battery compartment 13. A foam is pasted on the surface of the battery 5, and a battery cover 6 is covered on the battery 5. The battery cover 6 is made of plastic material, which can provide buffer protection for the battery 5. The plastic part 15 of the housing 1 will not affect the performance of the internal antenna 9, and can provide buffer protection for the internal antenna 9 and the battery 5. At the same time, the plastic part 15 is light in weight, which can reduce the weight of the entire housing 1.

[0037] When assembling the in-vehicle device of the present utility model, first, sealant is dot-applied at the positions of the first groove 112, the second groove 131 of the housing 1 and the inner wall of the housing 1 corresponding to the upper cover 7 respectively. Then, the fan 31 is installed at the corresponding position of the installation groove 11. The fan wire harness 311 is arranged and passed through the through hole 111. The fan screw is tightened, and then the fan cover 33 is installed and the fan cover screw is tightened. Next, the circuit board 2 is installed into the housing 1, and the fan wire harness 311 is inserted into the connector on the circuit board 2. Then, the upper cover 7 is installed on the housing 1, and the upper cover 7 is pressed against the third seal 43. The battery cover screw is tightened, and then the battery 5 is installed into the battery compartment 13. The battery 5 is pressed against the second seal 42. The battery wire harness 51 is passed through the wire harness hole 132 and inserted into the connector on the circuit board 2. Finally, the battery cover plate 6 is covered and the battery cover screw is tightened to complete the assembly of the entire in-vehicle device.

[0038] Embodiment III

[0039] The present utility model provides a vehicle, including the above-mentioned in-vehicle device.

[0040] The in-vehicle device of the present utility model is assembled on the vehicle. The circuit board and the chip are responsible for processing signals, thereby realizing the signal interaction control of the vehicle.

[0041] Although the preferred embodiments in the embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present utility model.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.

Claims

1. A heat dissipation and waterproof component, characterized in that: It includes a shell and a heat sink, the outer wall of the shell is provided with a mounting groove, the heat sink is arranged in the mounting groove, the inner wall of the mounting groove is provided with a through hole, the through hole is connected to the circuit board in the shell, the inner wall of the mounting groove around the through hole is provided with a first groove, the first groove is provided with a first sealing member, and the heat sink is pressed against the through hole and the first sealing member.

2. The heat dissipation and waterproof assembly according to claim 1, characterized in that: A drainage hole is provided on the inner wall of the mounting groove, and the drainage hole is communicated with the outside of the shell.

3. The heat dissipation and waterproof assembly according to claim 2, characterized in that: The heat sink comprises an air-cooled heat sink, and the air-cooled heat sink comprises a fan and heat dissipation fins. The fan and the heat dissipation fins are arranged adjacent to each other, and the fan is arranged adjacent to the drainage hole.

4. The heat dissipation and waterproof assembly according to claim 3, characterized in that: The fan is pressed against the through hole and the first seal.

5. The heat dissipation and waterproof assembly according to claim 4, characterized in that: The through hole, the first groove and the fan are all circular, and the diameters of the through hole, the first groove and the fan increase sequentially.

6. The heat dissipation and waterproof assembly according to claim 3, characterized in that: The air-cooled heat sink also includes a fan cover plate, on which a fan slot and a fin slot are provided, the fan slot corresponds to the fan, the fin slot corresponds to the heat dissipation fin, and the fan cover plate is fixed on the mounting slot.

7. The heat dissipation and waterproof assembly according to claim 1, characterized in that: It also includes an upper cover, which is fixed on the shell. The circuit board, chip and built-in antenna are arranged in a cavity formed by the shell and the upper cover. A third seal is arranged between the shell and the upper cover, and the third seal is arranged around the circuit board.

8. The heat dissipation and waterproof assembly according to claim 1, characterized in that: It also includes a battery cover plate, a battery compartment is provided on the outer wall of the shell, a battery is provided in the battery compartment, a second groove is provided on the inner wall of the battery compartment around the battery, a second seal is provided in the second groove, and the battery cover plate is pressed against the battery and the second seal.

9. A vehicle-mounted device, characterized in that: It comprises the heat dissipation and waterproof component as described in any one of claims 1 to 7, as well as a circuit board, a chip, a built-in antenna and a battery, wherein the heat dissipation and waterproof component comprises a shell, an outer wall of the shell is provided with a mounting groove, the chip and the built-in antenna are arranged on the circuit board, the circuit board, the chip and the built-in antenna are arranged in the shell, and the battery is arranged in a battery compartment of the shell.

10. A vehicle, characterized in that: Comprising the vehicle-mounted device as claimed in claim 9.

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