CN207266440U - A kind of housing of car-mounted terminal - Google Patents

Abstract

The utility model discloses a vehicle-mounted terminal casing, which relates to the technical field of vehicle-mounted terminal accessories, and comprises a panel for fixing a display screen and a box for installing electronic devices arranged on the panel. The top surface of the box is provided with multiple A cooling hole, the inner wall of the cooling hole is provided with an annular accommodating groove, and an annular elastic piece is arranged in the accommodating groove. The inner diameter of the elastic piece decreases gradually from top to bottom, and the through hole of the elastic piece is vertically A circular sliding plate is connected to the sliding plate in the axial direction, and a ventilation hole connecting the inside and outside of the machine box is opened on the elastic member; when the sliding plate slides down to the set position, the ventilation hole is closed. By utilizing the cooperation of the elastic member, the accommodation groove and the sliding plate, the heat dissipation performance of the heat dissipation hole is ensured, and the waterproof performance thereof is improved at the same time, so as to reduce failures of the casing caused by water ingress.

Description

A housing for a vehicle-mounted terminal

technical field

The utility model relates to the technical field of vehicle-mounted terminal accessories, more specifically, it relates to a casing of a vehicle-mounted terminal.

Background technique

As the number of cars increases year by year, vehicle-mounted terminals are becoming more and more popular. Vehicle-mounted terminals are used to install on vehicles and integrate multiple functions such as positioning, communication, audio-visual entertainment, and vehicle driving recorder. The housing of the vehicle-mounted terminal is mainly composed of a panel, a housing cover plate and other housing components, and a PCB board is arranged inside, and the PCB board is fixed in the housing by structures such as screws and fixing columns. Due to the heating of electronic components such as the PCB board, the housing of the vehicle-mounted terminal needs to dissipate heat, so ventilation holes are provided on the outer wall of the housing. The electric wire interface and other positions on the housing can be sealed with additional waterproof plugs, but the ventilation holes cannot be sealed, thus affecting the waterproof and dustproof performance of the housing.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a housing of a vehicle-mounted terminal, which improves the waterproof performance of the housing by providing a waterproof structure in the cooling hole.

In order to achieve the above object, the utility model provides the following technical solutions:

A housing of a vehicle-mounted terminal, comprising a panel for fixing a display screen and a box for installing electronic devices arranged on the panel, characterized in that the top surface of the box is provided with a plurality of cooling holes, so that The inner wall of the heat dissipation hole is provided with an annular accommodation groove, and an annular elastic member is arranged in the accommodation groove, the inner diameter of the elastic member decreases gradually from top to bottom, and the passage of the elastic member A circular sliding plate is connected to the hole perpendicular to its axial sliding, and the elastic member is provided with a vent hole connecting the inside and outside of the machine box;

When the slide plate slides down to the set position, the air hole is closed.

By adopting the above technical solution, when there is no water in the heat dissipation hole, the air hole on the elastic member is used to form a heat dissipation channel, and the air inside the case exchanges heat with the outside through the heat dissipation channel. When the shell is immersed in water, the water flow enters the heat dissipation holes and accumulates on the slide plate, pushing the slide plate to move down. The slide plate is hard and presses the elastic parts to deform. Play the role of waterproof. The hot air in the machine box will heat the skateboard, thereby accelerating the evaporation of water on the skateboard. After the water evaporates, the elastic reaction force of the elastic member pushes the sliding plate to move up, so that the ventilation hole resumes ventilation.

Further, the vent hole is opened at the upper and lower ends of the elastic member and communicates with the space between the elastic member and the accommodating groove.

By adopting the above technical scheme, the air enters the cooling hole, enters the accommodating groove from the vent hole at the upper end of the elastic member, and then enters the inside of the machine box from the accommodating groove through the vent hole at the lower end of the elastic member, so that the inside of the machine box communicates with the outside world, improving the machine The thermal performance of the box.

Further, an annular sealing retaining ring is provided at a position between the heights of the air holes on the side wall of the elastic member facing the accommodating groove.

By adopting the above technical solution, when the sliding plate presses the elastic member to deform, the deformed elastic member presses the sealing retaining ring to fit the inner wall of the accommodating groove, thereby blocking the heat dissipation channel formed by the vent hole. Compared with the overall deformation of the elastic member to adhere to the inner wall of the accommodating tank, the degree of deformation required by the elastic member is small, and the waterproof performance is stronger.

Further, the inner wall of the accommodating groove corresponding to the height of the retaining ring is provided with an annular groove for matching with the retaining ring.

By adopting the above technical solution, when the slide plate pushes the sealing retaining ring to fit the inner wall of the accommodating groove, the sealing retaining ring is embedded in the groove, further improving the waterproof performance of the casing.

Further, the top end of the accommodating groove is a slope inclined downward.

By adopting the above technical solution, the water flowing down through the inner wall of the cooling hole is prevented from entering the space between the elastic member and the accommodating groove along the top of the accommodating groove, and the waterproof performance of the casing is improved.

Further, the bottom end of the accommodating groove is an upwardly inclined slope.

By adopting the above technical solution, even if water enters the space between the storage tank and the elastic member, the inclined surface at the bottom end of the storage tank can act as a water barrier, further reducing the possibility of water entering the machine box.

Further, a water-absorbing flexible medium material is provided on the end surface of the slide plate, and the inner wall of the cooling hole above the accommodating groove is provided with a card slot for restricting the upward movement of the water-absorbing flexible medium material.

By adopting the above technical solution, when only a small amount of water enters the cooling hole, the water on the hole wall will be absorbed by the water-absorbing flexible medium material and will not enter the vent hole. And when the amount of water entering the cooling hole is large, the water-absorbing flexible medium material absorbs water, increases in weight and slides down, pushes the slide plate below to slide, deforms the elastic member, and pushes the retaining ring to seal the cooling hole.

Further, a dust-proof net is arranged on the top of the heat dissipation hole.

By adopting the above-mentioned technical solution, the dust-proof net is used to reduce the dust falling into the cooling hole, prevent it from blocking the ventilation hole and affect the heat dissipation performance, and reduce the accumulation of dust on the slide plate, which will cause the slide plate to move down and seal the cooling hole.

Compared with the prior art, the utility model has the advantages of:

1. In the heat dissipation hole, a matching accommodation groove and an elastic member are provided, and a vent hole is opened on the elastic member, so that the vent hole is used to form a heat dissipation channel to ensure the heat dissipation performance of the shell. At the same time, in the through hole of the elastic member Slidingly connect the slide plate, and use the slide plate to move down to compress the deformation of the elastic member to cling to the inner wall of the accommodating tank, cut off the heat dissipation channel, and ensure the waterproof performance of the shell;

2. Set a sealing retaining ring on the side wall of the elastic member facing the inner wall of the accommodating tank, and use the sealing retaining ring to fit the accommodating tank to cut off the heat dissipation channel, reduce the deformation required for the elastic member to seal the heat dissipation hole, and improve the housing waterproof performance;

3. Utilize the water-absorbing flexible medium material to absorb a small amount of water entering the heat dissipation holes, so as to avoid the frequent deformation of the elastic parts and affect its service life. Increase weight to improve the waterproof performance of the shell.

Description of drawings

Fig. 1 is the overall schematic diagram of the utility model;

Fig. 2 is a sectional view of the cooling hole of the present invention.

Reference signs: 1, panel; 2, machine box; 3, cooling hole; 4, accommodating groove; 5, elastic member; 6, slide plate; 7, vent hole; 8, sealing retaining ring; 9, card slot; 10 1. Water-absorbing flexible medium material; 11. Dust-proof net; 12. Groove.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.

A housing of a vehicle-mounted terminal, referring to FIG. 1 , includes a panel 1 for fixing a display screen, and a box 2 fixed on the panel 1 for installing electronic devices. The top surface of the box 2 is provided with a plurality of heat dissipation Hole 3, the opening of cooling hole 3 faces upward.

As shown in Figure 2, an annular accommodation groove 4 is provided on the inner wall of the heat dissipation hole 3, and an annular elastic member 5 is clamped in the accommodation groove 4. The inner diameter of the through hole of the elastic member 5 gradually increases from top to bottom. decrease. The top and the bottom of the elastic member 5 are all in close contact with the inner wall of the accommodating groove 4 to keep the seal. The through hole is sealed, and the diameter of the slide plate 6 is greater than the minimum inner diameter of the through hole, so that the cooling hole 3 is kept sealed to ensure its waterproof performance.

In order to ensure the heat dissipation performance of the heat dissipation hole 3, since there is a space between the side wall of the elastic member 5 and the inner wall of the accommodating groove 4, vent holes 7 are provided at the upper and lower ends of the elastic member 5, and the vent hole 7 communicates with the elastic member 5 The space between the housing and the accommodating tank 4 forms a heat dissipation channel, and the hot air in the case 2 can exchange heat with the outside air.

Due to the heat dissipation channel formed by the cut-off vent hole 7, the elastic member 5 needs to be greatly deformed to be close to the inner wall of the accommodating groove 4. In order to further improve the waterproof performance, the required deformation of the elastic member 5 is reduced. An annular sealing retaining ring 8 is arranged on the side wall of the groove 4 at a position between the heights of the vent holes 7 . When the shell is immersed in water, the water flow enters the heat dissipation hole 3, pushing the slide plate 6 to move down. The slide plate 6 is hard and compresses the elastic member 5 to deform, and pushes the sealing retaining ring 8 to fit the inner wall of the accommodation tank 4, thereby blocking the heat dissipation channel. To play the role of waterproof.

In order to make the retaining ring 8 fit better with the inner wall of the housing groove 4 , an annular groove 12 matching the retaining ring 8 is provided on the inner wall of the housing groove 4 corresponding to the height of the retaining ring 8 . Therefore, when the slide plate 6 pushes the sealing retaining ring 8 to fit the inner wall of the accommodating groove 4, the sealing retaining ring 8 is embedded in the groove 12, and the waterproof performance is better.

Both the top and the bottom of the accommodating tank 4 are provided with inclined surfaces, the top inclined surface is inclined downward, and the bottom inclined surface is inclined upward. Thus the water flowing into the heat dissipation hole 3 through the wall of the heat dissipation hole 3 will not enter the space between the accommodation groove 4 and the elastic member 5, even if there is water flowing in, it will be blocked by the slope at the bottom of the accommodation groove 4 and will not enter the machine. Box 2 interior.

In order to further reduce water flowing into the space between the accommodation groove 4 and the elastic member 5 along the inner wall of the cooling hole 3 , a water-absorbing flexible medium material 10 is provided on the upper surface of the slide plate 6 , and pp cotton is used in this embodiment. And the heat dissipation hole 3 is located on the upper inner wall of the accommodating groove 4 to set a draw-in groove 9, and utilize the draw-in groove 9 to limit the water-absorbing flexible medium material 10 to move toward the opening of the heat dissipation hole 3 near the outside to prevent it from falling from the heat dissipation hole 3. When only a small amount of water enters the cooling hole 3, the water on the hole wall will be absorbed by the pp cotton. And when the amount of water entering the heat dissipation hole 3 is very large, the pp cotton absorbs water, increases in weight and slides down, and pushes the slide plate 6 below to slide, thereby pushing the sealing retaining ring 8 to seal the heat dissipation hole 3 .

A dustproof net 11 is arranged on the top of the cooling hole 3 . Thereby utilize dust-proof net 11 to reduce the dust that falls into cooling hole 3, prevent it from clogging air hole 7 and affect heat dissipation performance, and reduce the accumulation of dust on slide plate 6 and cause slide plate 6 to move down and seal cooling hole 3.

The working principle of this embodiment is:

The machine box 2 of the housing is provided with a heat dissipation hole 3, and the heat dissipation hole 3 maintains the communication between the inside and outside of the machine box 2 through the air hole 7 on the elastic member 5 and the accommodating groove 4 communicated with it, so that the electronic components in the machine box 2 The generated heat can be transferred to the outside through the cooling hole 3, so as to ensure the stability of the environment in which the electronic components operate. When water enters the interior of the vehicle and flows into the machine box 2 along the cooling holes 3, the water is first absorbed by the pp cotton, and a small amount of water accumulates on the slide plate 6 below. The gravity of pp cotton absorbs water increases and slides down along the card slot 9, forcing the sliding plate 6 to move axially along the through hole of the elastic member 5. Since the inner diameter of the through hole of the elastic member 5 gradually decreases from top to bottom, and the sliding plate 6 is made of hard material, , the sliding plate 6 compresses the elastic member 5 to deform, and the elastic member 5 presses the sealing retaining ring 8 to fit with the groove 12 on the accommodation groove 4, so that the elastic member 5 seals the cooling hole 3 and prevents water from entering the inside of the machine box 2.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (8)

1. A housing for a vehicle-mounted terminal, comprising a panel (1) for fixing a display screen and a case (2) for installing electronic devices on the panel (1), characterized in that the case The top surface of (2) is provided with a plurality of heat dissipation holes (3), and the inner wall of the heat dissipation holes (3) is provided with an annular accommodation groove (4), and the accommodation groove (4) is provided with A ring-shaped elastic piece (5), the inner diameter of the elastic piece (5) gradually decreases from top to bottom, and the through hole of the elastic piece (5) is vertically slidably connected with a circular A slide plate (6), the elastic member (5) is provided with a ventilation hole (7) communicating with the inside and outside of the machine box (2); When the slide plate (6) slides down to the set position, the air hole (7) is closed. 2. The housing of the vehicle-mounted terminal according to claim 1, wherein the ventilation hole (7) is opened at the upper and lower ends of the elastic member (5) and communicates with the elastic member (5) and the The space between the accommodating tanks (4). 3. The housing of the vehicle-mounted terminal according to claim 2, characterized in that, on the side wall of the elastic member (5) facing the accommodating groove (4), a position between the height of the air hole (7) is set. There is an annular sealing retaining ring (8). 4. The housing of the vehicle-mounted terminal according to claim 3, characterized in that, the inner wall of the accommodating groove (4) corresponding to the height of the sealing retaining ring (8) is provided with a ring for cooperation with the sealing retaining ring (8). The annular groove (12). 5. The housing of the vehicle-mounted terminal according to claim 4, characterized in that, the top end of the accommodating groove (4) is a slope inclined downward. 6. The housing of the vehicle-mounted terminal according to claim 5, characterized in that, the bottom end of the accommodating groove (4) is an upwardly inclined slope. 7. The housing of the vehicle-mounted terminal according to claim 6, characterized in that, a water-absorbing flexible dielectric material (10) is provided on the upper end surface of the slide plate (6), and the cooling hole (3) is located in the accommodating The upper inner wall of the groove (4) is provided with a locking groove (9) for restricting the upward movement of the water-absorbing flexible medium material (10). 8. The housing of the vehicle-mounted terminal according to claim 7, characterized in that, a dust-proof net (11) is provided on the top of the heat dissipation hole (3).