Vehicle-mounted host case

Abstract

The utility model discloses a vehicle-mounted host computer case, which comprises a bottom cover, a PCB (printed circuit board) assembly and a middle frame, the PCB assembly is assembled between the bottom cover and the middle frame, the middle frame is provided with a structural plate contacted with the bottom cover, the structural plate is provided with a pointed bulge structure, the pointed bulge structure is inserted into the bottom cover, and the bottom cover and the middle frame are arranged on the bottom cover. The bottom cover is connected with the middle frame in an attached mode, the PCB assembly is assembled between the bottom cover and the middle frame, the middle frame is provided with a structural plate, the structural plate is provided with a pointed protruding structure, and the pointed protruding structure is inserted into the bottom cover so that the bottom cover can be kept in close contact with the middle frame, and the signal shielding effect can be guaranteed. In the installation process, a press-fitting machine is adopted to apply pressure to the whole bottom cover, so that the sharp protruding structures penetrate into the bottom cover, and it is guaranteed that the bottom cover does not deform. In addition, the sharp protrusion structure is inserted into the inner structure of the bottom cover, and the tolerance influence is extremely small.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted host computers, in particular to a vehicle-mounted host computer chassis. Background Art

[0002] When a vehicle head unit is in operation, its internal circuits and components generate electromagnetic fields. These electromagnetic fields may interfere with each other, affecting the normal operation of the vehicle head unit. Furthermore, external electromagnetic environments, such as radio waves and lightning, may also interfere with the vehicle head unit. Magnetic shielding can effectively suppress this electromagnetic interference, ensuring that the vehicle head unit can operate stably and reliably in complex electromagnetic environments.

[0003] The common vehicle host chassis in the prior art mainly uses the middle frame 3 and the bottom cover 1 as a shielding body to prevent electromagnetic signals from leaking from the gaps between the components. However, in the structure to ensure that the middle frame 3 and the bottom cover 1 are tightly connected, additional complex processes or additional assembly structures to enhance the connection strength are added, which will increase production costs and increase assembly difficulty. Utility Model Content

[0004] In order to overcome at least one of the defects of the above-mentioned prior art, the present invention provides a vehicle-mounted host chassis, which can solve the problems in the prior art of increasing production costs by setting slots in the stamped sandwich structure and increasing assembly difficulty by setting multiple protrusion structures.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A vehicle-mounted host chassis includes a bottom cover, a PCB assembly and a middle frame. The PCB assembly is assembled between the bottom cover and the middle frame. The middle frame has a structural plate in contact with the bottom cover. The structural plate is provided with a pointed protrusion structure, and the pointed protrusion structure is inserted into the bottom cover.

[0007] By adopting the above solution, the pointed protrusion structure is inserted into the bottom cover, maintaining close contact and providing excellent signal shielding. Automatic installation can be completed using a standard press-fitting machine, making production more convenient. Furthermore, the pointed protrusion structure is inserted into the bottom cover to achieve grounding. The only impact caused by tolerances is the length and position of the insertion inside the bottom cover, and the deviations in length and position are very small. Therefore, the above structure is minimally affected by tolerances. Furthermore, based on the above structure, there is no need to provide an additional shielding cover on the chassis, saving costs.

[0008] Furthermore, the structural plate is the side plate of the middle frame, the side plate of the middle frame has several contact points with the bottom cover, and there are multiple pointed protrusion structures, and multiple pointed protrusion structures are arranged at several of the contact points, and multiple pointed protrusion structures are inserted into the bottom cover.

[0009] By adopting the above solution, multiple pointed protrusion structures are provided to penetrate the bottom cover, ensuring multi-point contact between the middle frame and the bottom cover, further reducing the impact of manufacturing tolerances, and basically eliminating the impact of manufacturing tolerances on grounding.

[0010] Furthermore, the middle frame is provided with a plurality of middle frame support structures, and the PCB assembly is mounted on the middle frame support structures.

[0011] By adopting the above solution, a middle frame support structure is provided to facilitate the installation of PCB components.

[0012] Furthermore, the middle portion of the bottom cover is recessed toward the side away from the PCB assembly to form a cavity, and the edge of the bottom cover is provided with a connecting surface corresponding to the number and position of the plurality of middle frame support structures, and the bottom cover and the middle frame are fixedly connected to the middle frame support structure via the connecting surface.

[0013] By adopting this solution, the center of the bottom cover is recessed toward the side away from the PCB assembly to form a cavity, providing more mounting space for the PCB assembly. More importantly, the gap between the bottom cover and the PCB assembly provides some cushioning against vibration and impact encountered during driving, protecting the electronic components on the PCB. Furthermore, during the manufacturing and assembly process, the gap allows for minor dimensional differences, ensuring smooth assembly. A connecting surface on the bottom cover facilitates the connection between the bottom cover and the midframe.

[0014] Furthermore, the pointed protrusion structure is arranged at a position close to the middle frame support structure and is inserted into the bottom cover.

[0015] By adopting the above solution, the pointed protrusion structure close to the middle frame support structure can ensure the stable contact between the pointed protrusion structure and the bottom cover, and even after long-term use, the pointed protrusion structure is not likely to separate from the bottom cover.

[0016] Furthermore, there are at least four of the plurality of middle frame support structures, and the four middle frame support structures are respectively located at the four corner points of the middle frame, and the bottom cover is provided with a connecting table corresponding to the number and position of the at least four middle frame support structures.

[0017] By adopting the above solution, the overall fit between the bottom cover and the middle frame is ensured, thereby ensuring the magnetic shielding effect.

[0018] Furthermore, the connecting table and the middle frame support structure are fixed by bolt structure.

[0019] By adopting the above solution, the table top and the middle frame support structure are connected by a bolt structure, thereby achieving the effect of connecting the cover plate and the middle frame.

[0020] Furthermore, the PCB assembly is provided with an avoidance hole for allowing the bolt to pass through at a portion located between the connection table and the middle frame support structure.

[0021] By adopting the above solution, the PCB assembly avoids the bolts by setting avoidance holes. Compared with reducing the size of the PCB assembly to avoid the bolts, it can ensure that the PCB assembly has a larger board area, thereby making it simpler to design the circuit. In addition, the bolts passing through the avoidance holes can also ensure the positioning of the PCB assembly.

[0022] Furthermore, a distance between a surface of the connection table facing the PCB assembly and a surface of the PCB assembly facing the connection table is 0.3 mm to 1 mm.

[0023] By adopting the above solution, it is ensured that there is sufficient space for installing various components in the PCB assembly. In addition, a certain gap is left to facilitate heat dissipation.

[0024] Furthermore, the pointed protrusion structure is integrally formed with the middle frame.

[0025] By adopting the above solution, the pointed protrusion structure and the middle frame are integrally formed, which is convenient for production and ensures the grounding effect. More importantly, the integrity of the pointed protrusion structure and the middle frame is ensured, so that its rigidity can be guaranteed during the process of inserting the bottom cover.

[0026] Furthermore, the bottom cover is made of aluminum, and the pointed protrusion structure is made of steel.

[0027] By adopting the above solution, metal with high hardness is inserted into metal with low hardness, thereby ensuring the installation effect.

[0028] In summary, the vehicle-mounted host chassis provided by the present invention has the following technical effects:

[0029] 1. By inserting the pointed protrusion structure into the bottom cover, the close contact between the middle frame and the bottom cover can be maintained. This design not only enhances the stability of the structure, but also provides good signal shielding, helping to prevent electromagnetic interference.

[0030] 2. This design allows the assembly process to be automated using a general mechanical structure machine capable of completing press-fitting, thereby improving production efficiency and reducing labor costs.

[0031] 3. The grounding is achieved by inserting a pointed protrusion into the bottom cover. This design is less sensitive to manufacturing tolerances. Even if there is a certain length or position deviation, it will not significantly affect the overall structure because the deviation range is very small.

[0032] 4. Based on the above structural design, there is no need to set an additional shielding cover on the chassis, which helps to save production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The bottom cover is a schematic diagram of an exploded structure in a front and rear sandwich structure state;

[0034] Figure 2 for Figure 1 A magnified view of part A;

[0035] Figure 3 The bottom cover adopts the cross-sectional structure diagram of the stamped convex point of the background technology;

[0036] Figure 4 for Figure 3 A magnified view of part B;

[0037] Figure 5 This is a schematic diagram of the explosion structure of the utility model;

[0038] Figure 6 for Figure 5 Magnified view of part C;

[0039] Figure 7 This is a schematic diagram of the middle frame structure of the present utility model;

[0040] Figure 8 This is a schematic diagram of the bottom cover structure of the present utility model.

[0041] Among them, the meanings of the figure marks are as follows: 1. Bottom cover; 11. Connecting table; 2. PCB assembly; 21. Avoidance hole; 3. Middle frame; 31. Side panel; 32. Pointed protrusion structure; 33. Middle frame support structure; 4. Bolt; 5. Front and rear sandwich structure; 6. Stamping bump. DETAILED DESCRIPTION

[0042] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0046] See Figure 5-Figure 8 The utility model discloses a vehicle-mounted host chassis, including a bottom cover 1, a PCB assembly 2 and a middle frame 3. The PCB assembly 2 is assembled between the bottom cover 1 and the middle frame 3. The middle frame 3 has a structural plate in contact with the bottom cover 1. The structural plate is provided with a pointed protrusion structure 31. The pointed protrusion structure 31 is inserted into the bottom cover 1.

[0047] Specifically, the bottom cover 1 is fitted to the middle frame 3, with the PCB assembly 2 mounted between them. The middle frame 3 is equipped with a structural plate with a pointed protrusion 31. This protrusion 31 is inserted into the interior of the bottom cover 1 to maintain close contact between the two, ensuring effective signal shielding. During installation, a press machine applies pressure to the entire bottom cover 1, forcing the protrusion 31 into the interior, thereby preventing deformation. Furthermore, the insertion of the protrusion 31 into the internal structure of the bottom cover 1 minimizes the impact of tolerances.

[0048] In some embodiments, in order to further reduce the impact of manufacturing tolerances, the structural plate is the side plate 31 of the middle frame 3. The side plate 31 of the middle frame 3 has several contact points with the bottom cover 1. There are multiple pointed protrusion structures 31, and multiple pointed protrusion structures 31 are set at several contact points. The multiple pointed protrusion structures 31 are all inserted into the bottom cover 1. The specific setting positions of the multiple pointed protrusion structures 31 can be set according to needs, or multiple pointed protrusion structures 31 can be evenly distributed along the trajectory of the side plate 31. Details are not given here. The above structure ensures that the middle frame 3 and the bottom cover 1 are in multi-point contact by setting multiple pointed protrusion structures 31, further reducing the impact of manufacturing tolerances and basically eliminating the impact of manufacturing tolerances on grounding.

[0049] In some embodiments, in order to facilitate the installation and positioning of the PCB assembly 2, the middle frame 3 is provided with multiple middle frame support structures 33, and the PCB assembly 2 is mounted on the middle frame support structure 33 to provide support for the installation of the PCB assembly 2 and a certain positioning function.

[0050] In some embodiments, the middle portion of the bottom cover 1 is recessed toward the side away from the PCB assembly 2 to form a cavity, and the edge of the bottom cover 1 is provided with a connecting surface 11 corresponding to the number and position of the plurality of middle frame support structures 33, and the bottom cover 1 and the middle frame 3 are fixedly connected to the middle frame support structure 33 via the connecting surface 11.

[0051] Specifically, the middle portion of the bottom cover 1 is recessed toward the side away from the PCB assembly 2 to form a cavity. This creates a cavity between the bottom cover 1 and the PCB assembly 2, providing more mounting space for the PCB assembly 2. More importantly, the gap between the bottom cover 1 and the PCB assembly 2 provides a buffer against vibration and impact encountered during driving, protecting the electronic components on the PCB. Furthermore, during the manufacturing and assembly process, this gap allows for minor dimensional differences, ensuring smooth assembly. A connection surface 11 on the bottom cover 1 facilitates connection between the bottom cover 1 and the middle frame 3.

[0052] In some embodiments, to extend the lifespan of the chassis, the pointed protrusion 31 is positioned near the midframe support structure 33 and inserted into the bottom cover 1. Specifically, the proximity of the pointed protrusion 31 to the midframe support structure 33 ensures stable contact between the pointed protrusion 31 and the bottom cover 1, making it less likely to separate from the bottom cover 1 even during prolonged use.

[0053] In some embodiments, at least four middle frame support structures 33 are provided, and the four middle frame support structures 33 are located at the four corners of the middle frame 3. The bottom cover 1 is provided with connecting surfaces 11 corresponding in number and position to the at least four middle frame support structures 33. This ensures that the bottom cover 1 fits the middle frame 3 as a whole, thereby ensuring a good magnetic shielding effect.

[0054] In this embodiment, on the basis of setting four middle frame support structures 33 at the four corner points of the middle frame 3, another middle frame support structure 33 is set in the middle of the side plate 31 of the middle frame 3, so as to ensure that even if the length of the cover plate and the middle frame 3 is long, the bottom cover 1 and the middle frame 3 can still be tightly fitted.

[0055] In this embodiment, the connecting table 11 and the middle frame support structure 33 are connected and fixed by bolts 4. The connecting table 11 and the middle frame 3 support structure are connected by bolts 4, thereby achieving the effect of connecting the cover plate and the middle frame 3.

[0056] Based on the above structure, the PCB assembly 2 is provided with a clearance hole 21 between the connection table 11 and the middle frame support structure 33 to allow the passage of bolts 4. Specifically, the provision of the clearance hole 21 allows the PCB assembly 2 to avoid the bolts 4. Compared to reducing the size of the PCB assembly 2 to avoid the bolts 4, this ensures that the PCB assembly 2 has a larger board area, thereby simplifying circuit design. In addition, the placement of the bolts 4 through the clearance hole 21 also ensures that the PCB assembly 2 is positioned correctly.

[0057] In some embodiments, the distance between the surface of the connection platform 11 facing the PCB assembly 2 and the surface of the PCB assembly 2 facing the connection platform 11 is 0.3 mm to 1 mm, with a distance of 0.3 mm being optimal.

[0058] In this embodiment, the pointed protrusion structure 31 is integrally formed with the middle frame 3. The integral formation of the pointed protrusion structure 31 and the middle frame 3 facilitates production while ensuring the grounding effect. More importantly, the integrity of the pointed protrusion structure 31 and the middle frame 3 is ensured, so that its rigidity can be guaranteed during the insertion of the bottom cover 1.

[0059] In this embodiment, the bottom cover 1 is made of aluminum, and the pointed protrusion 31 is made of steel. Using a high-hardness metal to insert into a lower-hardness metal ensures a secure installation. Of course, the bottom cover 1 can also be made of other physically and chemically stable metal materials, and the pointed protrusion 31 can be made of a metal with a higher hardness than the bottom cover 1. Of course, the pointed protrusion 31 must also be made of a physically and chemically stable metal material.

[0060] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A vehicle-mounted host chassis, characterized in that: The invention comprises a bottom cover (1), a PCB assembly (2) and a middle frame (3), wherein the PCB assembly (2) is assembled between the bottom cover (1) and the middle frame (3), and the middle frame (3) has a structural plate in contact with the bottom cover (1), and the structural plate is provided with a pointed protrusion structure (32), and the pointed protrusion structure (32) is inserted into the interior of the bottom cover (1).

2. The vehicle-mounted host chassis according to claim 1, characterized in that: The structural plate is a side plate (31) of the middle frame (3), and the side plate (31) of the middle frame (3) has a plurality of contact points with the bottom cover (1). A plurality of the pointed protrusion structures (32) are provided, and the plurality of the pointed protrusion structures (32) are provided at the plurality of the contact points. The plurality of the pointed protrusion structures (32) are all inserted into the interior of the bottom cover (1).

3. The vehicle-mounted host chassis according to claim 1, characterized in that: The middle frame (3) is provided with a plurality of middle frame support structures (33), and the PCB assembly (2) is mounted on the middle frame support structures (33).

4. The vehicle-mounted host chassis according to claim 3, characterized in that: The middle portion of the bottom cover (1) is recessed toward a side away from the PCB assembly (2) to form a cavity, and the edge of the bottom cover (1) is provided with a connecting surface (11) corresponding to the number and position of the plurality of middle frame support structures (33), and the bottom cover (1) and the middle frame (3) are fixedly connected to the middle frame support structure (33) via the connecting surface (11).

5. The vehicle-mounted host chassis according to claim 3, characterized in that: The pointed protrusion structure (32) is arranged at a position close to the middle frame support structure (33) and is inserted into the bottom cover (1).

6. The vehicle-mounted host chassis according to claim 4, characterized in that: The connecting table (11) and the middle frame support structure (33) are connected and fixed by means of a bolt (4) structure.

7. The vehicle-mounted host chassis according to claim 6, characterized in that: The PCB assembly (2) is provided with an avoidance hole (21) for allowing the bolt (4) to pass through at a portion located between the connection table (11) and the middle frame support structure (33).

8. The vehicle-mounted host chassis according to claim 4, characterized in that: The distance between the surface of the connection table (11) facing the PCB component (2) and the surface of the PCB component (2) facing the connection table (11) is 0.3 mm to 1 mm.

9. The vehicle-mounted host chassis according to any one of claims 1 to 8, characterized in that: The pointed protrusion structure (32) and the middle frame (3) are integrally formed.

10. The vehicle-mounted host chassis according to any one of claim 9, characterized in that: The bottom cover (1) is made of aluminum, and the pointed protrusion structure (32) is made of steel.

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