Vehicle-mounted PAD structure and automobile

Abstract

The utility model relates to the technical field of vehicle-mounted screens, in particular to a vehicle-mounted PAD structure and an automobile, and the vehicle-mounted PAD structure comprises an LCD screen assembly, a rear shell, a shielding plate, a PCBA board and a cooling fin which are sequentially assembled into an integrated structure from front to back; wherein a structural adhesive is further arranged between the LCD screen assembly and the rear shell, and the LCD screen assembly and the rear shell can be bonded together through the structural adhesive. The screen and the host can be designed into a whole, so that the problem of high cost of split assembly is solved, and the requirements of customers on light and thin appearance of products and complete machine integration are met.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted screens, and in particular to a vehicle-mounted PAD structure and a vehicle. Background Art

[0002] In-vehicle infotainment systems are becoming increasingly important in the current automotive industry. As the functions of entertainment systems (radio, navigation, Ethernet, USB, video, etc.) increase, customers usually design the screen and central control host as two units and install them separately in the car, and then connect the two through the vehicle-side wiring harness to achieve communication functions. This not only increases the assembly process, but also makes the cost of the two products relatively high. Utility Model Content

[0003] The purpose of the utility model is to provide a vehicle-mounted PAD structure, which can design the screen and the host into one body, solve the problem of high cost of separate assembly, and meet customers' requirements for light and thin product appearance and whole machine integration.

[0004] Another object of the utility model is to provide a car, which, through the design of the vehicle-mounted PAD structure, can design the screen and the host into one, thereby solving the problem of high cost of separate assembly and meeting customers' requirements for the product's light and thin appearance and overall integration.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A vehicle-mounted PAD structure includes an LCD screen assembly, a rear shell, a shielding plate, a PCBA board and a heat sink which are assembled into an integrated structure from front to back;

[0007] Wherein, a structural adhesive is further arranged between the LCD screen assembly and the rear shell, and the structural adhesive can bond the LCD screen assembly and the rear shell together.

[0008] Furthermore, a plurality of rear-screen glue-dispensing bosses are arranged on the rear side of the LCD screen assembly, and a plurality of front-shell glue-dispensing bosses are arranged around the front side of the rear shell. The rear-screen glue-dispensing bosses are arranged correspondingly to the front-shell glue-dispensing bosses and the structural adhesive is applied therebetween.

[0009] Furthermore, the thickness of the structural adhesive is in the range of 0.4 to 0.5 mm.

[0010] Furthermore, a PCBA chip and a PCBA power amplifier are arranged on the PCBA board, and the inner cavity of the heat sink is respectively provided with a chip heat dissipation boss corresponding to the PCBA chip and an amplifier heat dissipation boss corresponding to the PCBA power amplifier, and thermal conductive materials are respectively arranged between the PCBA chip and the chip heat dissipation boss, and between the PCBA power amplifier and the power amplifier heat dissipation boss.

[0011] Furthermore, the thermally conductive material is thermally conductive gel, and the thickness of the thermally conductive gel is no more than 1 mm.

[0012] Further, a plurality of positioning posts are arranged on the rear side of the rear shell, a plurality of shielding plate positioning holes corresponding to the positioning posts are provided on the shielding plate, a plurality of first PCBA positioning grooves corresponding to the positioning posts are provided on the PCBA board, and a plurality of heat sink positioning holes corresponding to the positioning posts are provided on the heat sink;

[0013] The positioning column is sequentially assembled in the positioning hole of the shielding plate, the first PCBA positioning groove and the heat sink positioning hole for positioning and assembling therebetween.

[0014] Further, a plurality of positioning ribs are arranged on the rear side of the rear shell, a plurality of shielding plate positioning grooves corresponding to the positioning ribs are arranged on the shielding plate, a plurality of second PCBA positioning grooves corresponding to the positioning ribs are arranged on the PCBA board, and a plurality of heat sink positioning grooves corresponding to the positioning ribs are arranged on the heat sink;

[0015] The positioning ribs are sequentially assembled in the shielding plate positioning groove, the second PCBA positioning groove and the heat sink positioning groove for positioning and assembling therebetween.

[0016] Further, a plurality of screw columns are arranged on the rear side of the rear shell, internal threads are arranged in the screw columns, a plurality of shielding plate through holes corresponding to the screw columns are arranged on the shielding plate, a plurality of PCBA through holes corresponding to the screw columns are arranged on the PCBA board, and a plurality of heat sink through holes corresponding to the screw columns are arranged on the heat sink;

[0017] The screw column is sequentially assembled in the shielding plate through hole, the PCBA through hole and the heat sink through hole, and a fixing screw is assembled on the screw column.

[0018] Furthermore, the rear shell is made of plastic material.

[0019] Furthermore, the shielding plate is made of SECC material.

[0020] A car comprises the vehicle-mounted PAD structure.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The present application manufactures an all-in-one vehicle-mounted PAD by assembling an LCD screen assembly, a rear shell, a shielding plate, a PCBA board and a heat sink in sequence from front to back into an integrated structure. This manufacturing method can design the screen and the host into one, thereby solving the problem of high cost of split assembly and meeting customer requirements for a light and thin product appearance and overall integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a front axonometric view of the vehicle-mounted PAD structure of the utility model;

[0025] Figure 2 It is a rear axonometric view of the vehicle-mounted PAD structure of the utility model;

[0026] Figure 3 It is an exploded schematic diagram of the vehicle-mounted PAD structure of the utility model;

[0027] Figure 4 It is a horizontal cross-sectional view of the vehicle-mounted PAD structure of the utility model;

[0028] Figure 5 For this utility model Figure 4 A partial enlarged view of the structure at center A;

[0029] Figure 6 For this utility model Figure 4 A partial enlarged view of the structure at B in the middle;

[0030] Figure 7 This is a rear structural schematic diagram of the LCD screen assembly of the utility model;

[0031] Figure 8 This is a front structural schematic diagram of the rear housing of the utility model;

[0032] Fig. 9 It is a rear view structural schematic diagram of the rear shell of the utility model;

[0033] Fig.10 This is a schematic diagram of the structure of the shielding plate of the utility model;

[0034] Fig.11 This is a schematic diagram of the structure of the PCBA board of the utility model;

[0035] Fig.12 This is a front structural schematic diagram of the heat sink of the utility model;

[0036] Fig.13 It is a rear view structural schematic diagram of the heat sink of the utility model;

[0037] Fig.14It is a schematic cross-sectional view of the structure of the thermal conductive gel of the utility model.

[0038] In the figure:

[0039] 10-LCD screen assembly; 11-glue dispensing boss behind the screen;

[0040] 20-rear shell; 21-shell front glue boss; 22-positioning rib; 23-positioning column; 24-screw column;

[0041] 30-shielding plate; 31-shielding plate positioning groove; 32-shielding plate positioning hole; 33-shielding plate through hole;

[0042] 40-PCBA board; 41-first PCBA positioning slot; 42-second PCBA positioning slot; 43-PCBA through hole; 44-PCBA chip; 45-PCBA power amplifier;

[0043] 50-heat sink; 51-heat sink positioning groove; 52-heat sink positioning hole; 53-heat sink through hole; 54-heat sink fin; 55-power amplifier heat sink boss; 56-chip heat sink boss;

[0044] 60-structural adhesive; 70-thermal conductive gel; 80-screws. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0052] Example 1

[0053] Reference Figure 1-Figure 14 In this embodiment, a vehicle-mounted PAD structure (vehicle-mounted PAD: vehicle-mounted tablet computer) is provided, including an LCD screen assembly 10 (LCD: liquid crystal display), a rear shell 20, a shielding plate 30, a PCBA board 40 (PCBA: printed circuit board) and a heat sink 50 which are assembled into an integrated structure from front to back, and the shielding plate 30 and the PCBA board 40 are both located in the inner cavity of the rear shell 20, and the front end portion of the heat sink 50 is also located in the inner cavity of the rear shell 20 (such as Figure 1-Figure 4 ).

[0054] A structural adhesive 60 is further provided between the LCD screen assembly 10 and the rear housing 20 , and the structural adhesive 60 can bond the LCD screen assembly 10 and the rear housing 20 together.

[0055] Specifically, a plurality of rear-screen glue dispensing bosses 11 are provided at the rear side of the LCD screen assembly 10. The rear-screen glue dispensing bosses 11 are provided at multiple locations and distributed along the periphery of the rear side of the LCD screen assembly 10. The rear-screen glue dispensing bosses 11 may also be provided at the middle position of the rear side of the LCD screen assembly 10. The shape and size of each rear-screen glue dispensing boss 11 may be different and may be designed according to actual needs. The specific distribution is as follows: Figure 7 shown.

[0056] The periphery of the front side of the rear shell 20 is provided with a plurality of shell front glue bosses 21, and the shell front glue bosses 21 are provided at a plurality of locations and are mainly distributed along the periphery of the front side of the rear shell 20 (specifically, as shown in FIG. Figure 8 As shown), the screen rear glue dispensing boss 11 and the shell front glue dispensing boss 21 are arranged correspondingly and the structural adhesive 60 is applied therebetween, so as to bond the rear shell 20 and the LCD screen assembly 10 together.

[0057] Note: The model of structural adhesive 60 can be changed according to actual needs.

[0058] In this embodiment, the rear housing 20 may be made of plastic.

[0059] In this embodiment, the thickness of the structural adhesive 60 coating between the rear screen adhesive boss 11 and the front shell adhesive boss 21 is in the range of 0.4 to 0.5 mm. The structural adhesive 60 is formed by applying hot melt adhesive between the rear screen adhesive boss 11 and the front shell adhesive boss 21 using a hot melt adhesive coating device.

[0060] The shielding plate 30 is a sheet metal shielding plate 30 , and the material of the sheet metal shielding plate 30 is a stamped part SECC (electrogalvanized steel plate), so as to serve as an intermediate part for shielding and anti-interference.

[0061] The rear housing 20, the shielding plate 30, the PCBA board 40 and the heat sink 50 are assembled in sequence, and the assembly is as follows (refer to Figure 3 , Figure 4 , Figure 7-Figure 13 ):

[0062] First: a plurality of positioning posts 23 are provided on the rear side of the rear shell 20, a plurality of shielding plate positioning holes 32 corresponding to the positioning posts 23 are provided on the shielding plate 30, a plurality of first PCBA positioning grooves 41 corresponding to the positioning posts 23 are provided on the PCBA board 40, and a plurality of heat sink positioning holes 52 corresponding to the positioning posts 23 are provided on the heat sink 50; preferably, the first PCBA positioning groove 41 is a U-shaped groove.

[0063] When the rear shell 20, the shielding plate 30, the PCBA board 40 and the heat sink 50 are assembled in sequence, the positioning column 23 is assembled in sequence in the shielding plate positioning hole 32, the first PCBA positioning groove 41 and the heat sink positioning hole 52 to achieve positioning and assembly therebetween.

[0064] Second: a plurality of positioning ribs 22 are provided on the rear side of the rear shell 20, a plurality of shielding plate positioning grooves 31 corresponding to the positioning ribs 22 are provided on the shielding plate 30, a plurality of second PCBA positioning grooves 42 corresponding to the positioning ribs 22 are provided on the PCBA board 40, and a plurality of heat sink positioning grooves 51 corresponding to the positioning ribs 22 are provided on the heat sink 50; preferably, the second PCBA positioning groove 42 is a U-shaped groove.

[0065] When the rear shell 20, the shielding plate 30, the PCBA board 40 and the heat sink 50 are assembled in sequence, the positioning rib 22 also needs to be assembled in sequence in the shielding plate positioning groove 31, the second PCBA positioning groove 42 and the heat sink positioning groove 51 to achieve further positioning and assembly therebetween and improve the accuracy of positioning and assembly.

[0066] Third: a plurality of screw columns 24 are disposed on the rear side of the rear housing 20, and internal threads are formed in the screw columns 24. A plurality of shielding plate through holes 33 corresponding to the screw columns 24 are formed on the shielding plate 30, a plurality of PCBA through holes 43 corresponding to the screw columns 24 are formed on the PCBA board 40, and a plurality of heat sink through holes 53 corresponding to the screw columns 24 are formed on the heat sink 50;

[0067] When the rear shell 20, the shielding plate 30, the PCBA board 40 and the heat sink 50 are assembled in sequence, the screw columns 24 need to be assembled in sequence in the shielding plate through holes 33, the PCBA through holes 43 and the heat sink through holes 53, and the screws 80 for fixing are assembled on the screw columns 24, so that the overall structure is firmly connected, and the distributed screw columns 24 also serve as intermediate parts to connect the upper and lower parts.

[0068] Through the above three points, the rear housing 20, the shielding plate 30, the PCBA board 40 and the heat sink 50 are assembled accurately and firmly.

[0069] In this embodiment, the PCBA board 40 is provided with a PCBA chip 44 and a PCBA power amplifier 45, and the inner cavity of the heat sink 50 is respectively provided with a chip heat dissipation boss 56 corresponding to the PCBA chip 44 and a power amplifier heat dissipation boss 55 corresponding to the PCBA power amplifier 45, and a heat conductive material (such as a heat conductive material) is respectively provided between the PCBA chip 44 and the chip heat dissipation boss 56, and between the PCBA power amplifier 45 and the power amplifier heat dissipation boss 55. Fig.14).

[0070] The thermal conductive material is a thermal conductive gel 70, and the thickness of the thermal conductive gel 70 is not greater than 1 mm.

[0071] Specifically, the thickness of the thermally conductive gel 70 is designed to be 0.7 mm or less.

[0072] Note: The 70 wattage of thermal gel can vary depending on the model.

[0073] In addition, the PCBA board 40 is located between the shielding plate 30 and the heat sink 50, and the shielding plate 30 and the heat sink 50 form a fully enclosed structure to fully enclose the PCBA board 40 therein (such as Figure 4-Figure 6 ), so that the PCBA board 40 is not interfered by the outside world, plays a good shielding role, and greatly optimizes the product EMC (electromagnetic compatibility test).

[0074] The PAD integrated machine is assembled by stacking and installing the LCD screen assembly 10, the plastic back shell 20, the sheet metal shielding plate 30, the PCBA board 40, the heat sink 50 and other structural parts, the LCD screen assembly 10 and the plastic back shell 20 are bonded together by the structural adhesive 60, and then the sheet metal shielding plate 30 is simultaneously embedded in the groove of the rear side of the plastic back shell 20 and the groove of the front side of the heat sink 50, and the heat-generating PCBA chip 44 (that is, the core chip, SOC in English) and the PCBA power amplifier 45 (that is, the power amplifier IC) on the PCBA board 40 are mainly used to transfer heat to the heat sink 50 shell through the thermal conductive gel 70 as a medium, and the heat sink 50 is selected from materials with high thermal conductivity, such as aluminum and aluminum alloy series materials.

[0075] In this embodiment, the heat sink 50 is made of die-casting ADC12 (aluminum alloy). As a vehicle mounting bracket, heat sink 50 is provided with heat dissipation fins 54 on its surface, and the heat dissipation area is increased by using heat dissipation fins 54 on its surface.

[0076] It should be noted that the material of the local heat dissipation area of ​​the heat sink 50 can be changed according to actual needs, that is, the heat sink 50 can be made of a mixture of multiple materials or spliced ​​together by heat dissipation structures of multiple materials.

[0077] The thermal gap between the chip on the PCBA (PCBA chip 44 and PCBA amplifier 45) and the heat sink 50 is designed to be less than 0.7 mm, and then a thermal conductive gel 70 is used for assembly therebetween. On the one hand, this can reduce the increase in thermal resistance due to a large distance. On the other hand, the paste-like thermal conductive gel 70 used can reduce the assembly stress between the heat sink 50 and the chip to prevent stress damage. The heat sink 50 structure is heat-dissipated by using a heat sink fin method to avoid interference between heat conduction and increase the heat dissipation area of ​​the heat sink 50. The sheet metal shielding plate 30 and the heat sink 50 form an encirclement to completely wrap the PCBA board 40, so that it is not interfered with by the outside world and plays a good protective role.

[0078] The beneficial effects of the technical solution of the utility model are:

[0079] In order to solve the problem of high cost of separate assembly of screen and host in the prior art, the present application designs the screen and host into one body to meet the customer's requirements for light and thin appearance and whole machine integration. The difficulty of light and thin integrated design is the problem of space compression and heat dissipation caused by thinness. In order to solve this problem, we combine the functional requirements and the required heat dissipation efficiency, design a thermal conductive gel 70 to quickly transfer heat, and design heat dissipation fins 54 on the heat sink 50 to increase the heat dissipation area of ​​the heat sink 50, improve the heat dissipation effect, ensure the normal operation of the whole machine, reduce costs, facilitate loading and unloading, and optimize the structural design of the whole machine to meet customer experience.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0081] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vehicle-mounted PAD structure, characterized in that: It comprises an LCD screen assembly (10), a rear shell (20), a shielding plate (30), a PCBA board (40) and a heat sink (50) which are assembled in sequence from front to back into an integrated structure; A structural adhesive (60) is further provided between the LCD screen assembly (10) and the rear housing (20), and the structural adhesive (60) can bond the LCD screen assembly (10) and the rear housing (20) together.

2. The vehicle-mounted PAD structure according to claim 1, characterized in that: A plurality of rear-screen glue-dispensing bosses (11) are arranged on the rear side of the LCD screen assembly (10), and a plurality of front-shell glue-dispensing bosses (21) are arranged around the front side of the rear shell (20). The rear-screen glue-dispensing bosses (11) and the front-shell glue-dispensing bosses (21) are arranged correspondingly and the structural adhesive (60) is applied therebetween.

3. The vehicle-mounted PAD structure according to claim 2, characterized in that: The thickness of the structural adhesive (60) is in the range of 0.4 to 0.5 mm.

4. The vehicle-mounted PAD structure according to claim 1, characterized in that: A PCBA chip (44) and a PCBA power amplifier (45) are arranged on the PCBA board (40); a chip heat dissipation boss (56) corresponding to the PCBA chip (44) and a power amplifier heat dissipation boss (55) corresponding to the PCBA power amplifier (45) are respectively arranged in the inner cavity of the heat sink (50); and heat conductive materials are respectively arranged between the PCBA chip (44) and the chip heat dissipation boss (56), and between the PCBA power amplifier (45) and the power amplifier heat dissipation boss (55).

5. The vehicle-mounted PAD structure according to claim 4, characterized in that: The heat-conducting material is a heat-conducting gel (70), and the thickness of the heat-conducting gel (70) is no greater than 1 mm.

6. The vehicle-mounted PAD structure according to claim 1, characterized in that: A plurality of positioning posts (23) are arranged on the rear side of the rear shell (20); a plurality of shielding plate positioning holes (32) corresponding to the positioning posts (23) are provided on the shielding plate (30); a plurality of first PCBA positioning grooves (41) corresponding to the positioning posts (23) are provided on the PCBA board (40); and a plurality of heat sink positioning holes (52) corresponding to the positioning posts (23) are provided on the heat sink (50); The positioning column (23) is sequentially assembled in the shielding plate positioning hole (32), the first PCBA positioning groove (41) and the heat sink positioning hole (52) for positioning and assembling therebetween.

7. The vehicle-mounted PAD structure according to claim 1, characterized in that: A plurality of positioning ribs (22) are arranged on the rear side of the rear shell (20); a plurality of shielding plate positioning grooves (31) corresponding to the positioning ribs (22) are provided on the shielding plate (30); a plurality of second PCBA positioning grooves (42) corresponding to the positioning ribs (22) are provided on the PCBA board (40); and a plurality of heat sink positioning grooves (51) corresponding to the positioning ribs (22) are provided on the heat sink (50); The positioning rib (22) is sequentially assembled in the shielding plate positioning groove (31), the second PCBA positioning groove (42) and the heat sink positioning groove (51) for positioning and assembling therebetween.

8. The vehicle-mounted PAD structure according to claim 1, characterized in that: A plurality of screw columns (24) are arranged on the rear side of the rear shell (20), and an internal thread is provided in the screw columns (24); a plurality of shielding plate through holes (33) corresponding to the screw columns (24) are provided on the shielding plate (30); a plurality of PCBA through holes (43) corresponding to the screw columns (24) are provided on the PCBA board (40); and a plurality of heat sink through holes (53) corresponding to the screw columns (24) are provided on the heat sink (50); The screw column (24) is sequentially assembled in the shielding plate through hole (33), the PCBA through hole (43) and the heat sink through hole (53), and a fixing screw (80) is assembled on the screw column (24).

9. The vehicle-mounted PAD structure according to claim 1, characterized in that: The rear shell (20) is made of plastic material, and the shielding plate (30) is made of SECC material.

10. An automobile, characterized in that: The vehicle-mounted PAD structure comprises any one of claims 1-9.

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