Vehicle-mounted tablet computer

Abstract

The utility model relates to the field of vehicle-mounted intelligent equipment, in particular to a vehicle-mounted tablet computer, which mainly comprises a surface shell module, a bottom shell module and a small cover plate module of a bottom shell back bin body. According to the vehicle-mounted tablet computer, different requirements can be met, configuration can be rapidly replaced, and the cost is controlled on the basis that the high performance of an industrial tablet computer is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted intelligent equipment, in particular to a vehicle-mounted tablet. Background Art

[0002] With the continuous advancement of industrial and agricultural machinery technology, the continuous improvement of the degree of informationization and automation of equipment, and the increasing requirements of users for the use experience of machinery, vehicle-mounted tablets are increasingly widely used in industrial and agricultural machinery due to their convenience, efficiency, intelligent integration and good human-computer interaction experience.

[0003] Industrial and agricultural machinery operations are widely used and the scenarios are complex, so there are high requirements for the adaptability of vehicle-mounted tablets. Usually, new tablets need to be developed to meet the needs of different scenarios, which causes a great waste of resources and brings considerable economic pressure to users. Or when changing the tablet configuration, the whole machine needs to be disassembled, which requires certain professional skills and is very troublesome to disassemble and assemble, which can easily damage the tablet.

[0004] Therefore, how to make the vehicle-mounted tablet easy to install and disassemble and have good sealing is a hot topic and pain point in current industry research. Utility Model Content

[0005] The purpose of the utility model is to provide a vehicle-mounted tablet to solve the problems raised in the above background technology. The vehicle-mounted tablet of the utility model can quickly change the configuration to meet different needs, and can control the cost of the vehicle-mounted tablet while ensuring the high performance of the industrial tablet.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A vehicle-mounted tablet comprises: a front shell module, a bottom shell module matched with the front shell module, and a small cover module arranged on a back compartment of the bottom shell;

[0008] The small cover module comprises: a small cover, a replaceable circuit board fixed to the small cover, and a connector component.

[0009] Preferably, the face shell module includes a screen, a face shell and face shell hardware connected in sequence from top to bottom.

[0010] Preferably, the face shell includes a protective edge, a glue overflow groove, a fitting surface and a screen supporting edge which are arranged in sequence from the outside to the inside.

[0011] Preferably, the screen includes a centrally arranged display area and surrounding black screen borders.

[0012] Preferably, the bottom shell module includes a bottom shell, a mainboard arranged on the bottom shell, and a heat sink arranged between the bottom shell and the mainboard.

[0013] Preferably, a circle of baffles is formed around the heat sink to fix it, and a heat sink boss is formed on the side of the heat sink close to the mainboard and a fin structure is formed on the outside.

[0014] Preferably, a main waterproof ring is provided at the connection between the bottom shell module and the surface shell module.

[0015] Preferably, the central portion of the small cover plate is a convex structure.

[0016] Preferably, grooves and holes are left in the area below the upper surface of the small cover plate, and a hard plastic plate is pasted thereon.

[0017] Preferably, a waterproof frame is arranged around the lower surface of the small cover plate.

[0018] Preferably, the lower surface of the small cover is designed with a small cover shielding ridge along the circumference of the replaceable circuit board, and the bottom shell is designed with a bottom shell shielding ridge along the circumference of the replaceable circuit board.

[0019] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0020] 1. Easy to change configuration: Due to different usage scenarios and different needs, tablets usually have various configurations, such as whether they are equipped with a radio, no positioning, low-precision positioning, high-precision positioning, etc. If the configuration needs to be changed, the whole machine needs to be disassembled, which is very troublesome. The utility model installs the circuit board equipped with the radio and positioning precision module on the small cover plate at the rear compartment of the tablet shell, and the small cover plate can be disassembled by loosening the mounting screws. It is very convenient to change different configurations, saving time and efficiency.

[0021] 2. High performance: Protection level IP67 and above, meeting the outdoor use scenarios of industrial and agricultural machinery, the whole machine is drop-resistant and shock-resistant, and has a compact size.

[0022] 3. Low cost: Quick configuration change does not require the use of new panels. The internal circuit boards are integrated into a core board, and there are no extra connecting wires and terminals, which can improve assembly efficiency while ensuring stable circuit board performance. The core board is square in size and occupies little space, which can be easily applied to other product series and reduce development costs.

[0023] 4. The screen installation is more convenient.

[0024] 5. The heat sink brings good heat dissipation performance to the tablet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a plan view of the whole machine of the utility model;

[0027] Figure 2 This is the exploded view of the whole structure of the utility model;

[0028] Figure 3 This is a three-dimensional diagram of the face shell module of the utility model;

[0029] Figure 4 This is a three-dimensional diagram of the bottom shell module of the utility model;

[0030] Figure 5 This is a cross-sectional view of the bottom shell and heat sink of the utility model;

[0031] Figure 6 This is a three-dimensional diagram of the small cover module on the back of the bottom shell of the utility model;

[0032] Figure 7 This is an exploded view of the small cover module structure of the utility model;

[0033] Among them: 100: car tablet, 200: cover module, 210: screen, 211: display area, 212: screen black edge, 220: cover, 221: protective edge, 222: overflow glue groove, 223: fitting surface, 224: screen support edge, 230: cover hardware, 300: bottom cover module, 310: motherboard, 320: heat sink, 321: heat sink boss, 322: circumferential screw, 323: heat sink frame, 324: heat sink baffle, 325: fin, 326: glue groove, 327: bottom cover frame, 330: bottom cover, 340: main waterproof ring, 350: reinforcing ribs, 360: speaker, 370: nut, 380: waterproof breathable membrane, 390: main connector, 400: small cover module, 410: cable, 420: interchangeable circuit board, 430: small cover, 440: connector, 450: small cover fastening screws, 460: sticker, 470: bottom shell shielding ridge, 480: small cover sealing ring, 490: anti-loosening boss, 510: circuit board fastening screws, 520: socket, 530: radio station, 540: small cover shielding ridge, 550: small cover sealing ridge, 560: hole, 570: hard plastic board. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] A vehicle-mounted flat panel with rapidly replaceable configuration mainly comprises a front shell module, a bottom shell module and a small cover plate module of a compartment on the back of the bottom shell.

[0036] The face shell module mainly includes a face shell, face shell hardware, and a screen. The face shell and the face shell hardware are integrally formed by in-mold injection molding, and the screen is glued into a groove on the surface of the face shell.

[0037] The bottom shell module and the mainboard include a bottom shell, a heat sink, a mainboard, electronic accessories, a seal, etc. The relevant components are mounted on the bottom shell by screws or glue, and are sealed by sealing rings or glue.

[0038] The small cover module and the main board include a small cover, a replaceable circuit board, related connectors, etc. The replaceable circuit board and related connectors are fixed on the small cover, and the small cover is fixed on the bottom shell.

[0039] See also Figure 1-2 A vehicle-mounted tablet 100 with a quickly replaceable configuration mainly includes a front shell module 200, a bottom shell module 300 and a small cover module 400 of the back compartment of the bottom shell. The front shell module 200 and the bottom shell module 300 are fastened by fasteners, and the small cover module 400 is fixed to the back of the bottom shell module 300 by fasteners. To ensure the protection level of the whole machine, a waterproof ring is compressed when fastening.

[0040] See also Figure 3 The face shell module 200 mainly includes a face shell 220, a face shell hardware 230, and a screen 210. The face shell 220 is made of hard plastic material to reduce the weight of the whole machine and reduce the batch unit price. The surface texture mold of the face shell material is die-casted once without adding other processes later to ensure the appearance. Note that the face shell needs to be made of corrosion-resistant, anti-aging, and strong material to ensure the service life of the whole machine.

[0041] The face shell hardware 230 is formed by injection molding with the face shell. This production method has low batch cost, no need for later assembly, high structural strength and space saving. The structural design needs to use more ribs to increase strength, pay attention to the design of glue positions to increase the fit strength between the two, etc.

[0042] The screen 210 adopts a fully laminated screen, so that there will be no internal condensation of water vapor when the tablet is used in an ultra-wide working range. At the same time, the screen adopts an external bonding solution. Compared with fixing the screen from the inside, direct external bonding can greatly reduce the size of the shell. The edge of the screen is close to the frame, and the display area 211 accounts for a large proportion. If the size of the black border 212 of the screen can be controlled to be small enough, it can bring users an almost full-screen experience. The inside of the black border 212 of the screen is the bonding surface of the screen, which is glued to the bonding surface 223 of the shell by gluing or backing. The size of the black border 212 of the screen cannot be too narrow, otherwise the bonding width is too small, which can easily cause the screen to fall off or water to enter.

[0043] Furthermore, this embodiment adopts a machine-applied glue method, which has high batch efficiency and low cost. If a sheet of adhesive is used for the black border around the screen, the middle part of the adhesive needs to be hollowed out and removed, which causes great waste; if a sheet of adhesive is used for each of the four sides to save materials, water is easily introduced at the junction of the adhesive; if a sheet of adhesive is used for each of the four sides and a through hole is made at the junction, and the adhesive is applied from the back, the process is complicated, and the integration of the adhesive application and the adhesive is difficult to grasp.

[0044] Furthermore, in this embodiment, a glue overflow groove 222 is added on the outer side of the fitting surface 223 to prevent excessive glue from overflowing the screen and affecting the appearance; a screen support ridge 224 is added on the inner side of the fitting surface 223 to ensure that sufficient glue is retained at the bonding point between the screen and the cover, and the glue is activated by pressure retention to increase the adhesion between the screen and the cover. The protective ridge 221 of the cover has a certain width and strength to ensure that the screen is not damaged when the tablet falls. At the same time, the distance between the inner side of the protective ridge 221 and the outer side of the screen also needs to be controlled. It should not be too wide to affect the appearance, nor too narrow to avoid the protective ridge squeezing the screen and causing damage due to changes in the ambient temperature.

[0045] See also Figure 4 and Figure 5 The bottom shell module 300 mainly includes a mainboard 310, a heat sink 320, a bottom shell 330, a main waterproof ring 340 and related electronic accessories such as a speaker 360. The related components are fixed on the bottom shell 330 and sealed to ensure the protection level of the whole machine.

[0046] The mainboard 310 integrates the remaining functions except those that need to be replaced, and integrates the internal circuit boards into a whole core board, so that there are no extra connecting wires and terminals for communication between circuit boards. This can not only improve assembly efficiency and ensure stable performance of the circuit boards, but also the core board is square in size and occupies little space, which can be easily applied to other product series, greatly reducing development costs.

[0047] The heat sink 320 is made of metal and installed under the mainboard to facilitate heat conduction and heat dissipation of the heating device. It can be molded by in-mold injection molding without post-installation process, but the defect rate is high. In order to confirm the good rate, this embodiment adopts a split type. The heat sink is die-cast and fastened to the bottom shell by circumferential screws 322. The heat sink and the bottom shell surrounding frame 327 are sealed with glue at the glue groove 326.

[0048] Furthermore, the heat sink 320 can be backed with glue around the periphery and the contact surface of the bottom shell to increase the adhesion and prevent the glue from flowing to the outside through the gap between the fitting surfaces and affecting the appearance when gluing. The backing glue can also be omitted, and a circle of heat sink baffles 324 can be made around the heat sink, and a bite structure can be made with the contact surface of the bottom shell. Even if the heat sink or the shell is slightly deformed, the glue will not overflow. In addition, it should be noted that the heat sink at the screw position also needs to be well-made with heat sink ribs 323 to facilitate the gluing and sealing of the screw heads after the screws are installed. In this embodiment, the outside of the heat sink has fins 325 to achieve the best heat dissipation effect. In order to ensure smooth demolding of the die-casting process, the inside is also made of fins 325 to balance the demolding friction. In addition, a heat sink boss 321 is made at the position where heat dissipation is required to make it close to the heating device.

[0049] The main waterproof ring 340 bypasses the screw holes and is installed on the outer periphery of the bottom shell. The front shell is pressed tightly against the main waterproof ring and buckled with the bottom shell by the circumferential screws to meet the waterproof level. A pressure relief groove is made at the bottom of the main waterproof ring, and a narrow waterproof bone is made at the position where the front shell presses the main waterproof ring, so that the main waterproof ring is less deformed as a whole, and the buckling surface of the front shell and the bottom shell does not deform to affect the appearance.

[0050] The related electronic accessories are similar to the speaker 360 and are fixed on the bottom shell by gluing. To ensure the aesthetics and protective effect after gluing, a waterproof and sound-permeable membrane is pasted in the bottom shell groove where the speaker is installed, and the speaker presses the back glue to prevent glue overflow. The remaining electronic accessories such as headphones, microphones, SIM cards, USB, etc. have been fully considered in terms of technology to ensure the protection level of the whole machine, which will not be repeated here.

[0051] The bottom shell 330 is made of the same material as the face shell 220, and its material advantages are the same as the face shell and will not be repeated. As the carrier component of the whole machine, the bottom shell needs to have sufficient strength, but the thickness cannot be too thick, otherwise it will affect the molding process and make the whole machine bulky. Therefore, the reinforcing ribs 350 are an important means to increase the strength of the bottom shell. In this embodiment, the bottom shell adopts a large number of reinforcing ribs to increase the strength while reducing the thickness, so that the overall thickness of the bottom shell is uniform and convenient for injection molding. At the same time, because there are many decorative features on the exterior surface, which leads to excessive demolding friction, the use of internal reinforcing ribs can balance the demolding friction and ensure smooth demolding.

[0052] Furthermore, many nuts are injection-molded in the bottom shell 330, and the nuts on the exterior surface, such as nut 370, need to have through holes inside to facilitate pressing the nuts during injection molding. The use of blind hole single-pass nuts can increase the bonding area between the nuts and the bottom shell for better waterproofing. At the same time, the through hole can be left in the center of the blind hole single-pass nut to facilitate later glue filling to achieve a waterproof effect.

[0053] Furthermore, the bottom shell 330 is installed with accessories such as the main joint 390. If the accessories come with a sealing ring, it is only necessary to ensure that the installation surface of the bottom shell is smooth and free of ejector pins. At the same time, a narrower waterproof bone position can be made around the installation position. The effect is the same as the main waterproof ring 340 and will not be repeated here. It is worth noting that when the entire machine is sealed and protected, when the external ambient temperature changes significantly, it will cause an imbalance in the internal and external air pressure of the entire machine and eventually damage it. Therefore, the application of the waterproof and breathable membrane 380 can balance the internal and external air pressure while meeting the waterproof and breathable effect. In this embodiment, the position of the waterproof and breathable membrane is hidden under the sticker on the outside of the bottom shell, and an additional breathable groove is added to prevent the sticker from blocking the waterproof and breathable holes, which can meet its function without affecting the appearance.

[0054] See also Figure 6 and Figure 7 The small cover module 400 is installed on the back of the bottom shell, and mainly includes a small cover 430, a replaceable circuit board 420 and related connectors 440. The replaceable circuit board and related connectors are fixed on the small cover, and the small cover is fixed on the bottom shell.

[0055] The screw countersunk holes are evenly distributed around the small cover plate 430 , and after the small cover plate fastening screws 450 are installed, the screw heads are sunk into the countersunk to create a more aesthetically pleasing effect.

[0056] Furthermore, the center portion of the small cover plate 430 is a raised structure, which allows for sufficient space inside to accommodate the replaceable circuit board 420 and related accessories.

[0057] Furthermore, a groove is left in the upper area of ​​the small cover plate to paste label stickers 460 representing different configuration information. The groove has a positioning effect, and after the sticker is pasted, the sticker surface is flush with the upper surface of the small cover plate to obtain a more beautiful effect. In addition, in order to control the pasting direction, a large chamfer is designed at the lower right corner of the groove.

[0058] Furthermore, grooves and holes 560 are left in the lower area of ​​the upper surface of the small cover plate to facilitate pasting of the hard plastic plate 570 and installation of the connector 440. The surface of the hard plastic plate has configuration information of different connectors, and the back is made of adhesive to make it firmly adhered to the small cover plate. When changing the configuration, you only need to change the specifications of the hard plastic plate, which is very convenient. At the same time, when changing the configuration, the number of connectors 440 may change. It is only necessary to leave no holes in the hard plastic plate at the position where the connector is not installed to complete the configuration update and sealing of the shell. When the connector 440 is installed in the hole 560, the connector comes with a sealing ring that can be tightened to be waterproof. What needs to be considered during design is the connector spacing and the use of tools.

[0059] Furthermore, a waterproof bone position is designed around the lower surface of the small cover plate to compress the small cover plate sealing ring 480. The design scheme of the waterproof bone position and the sealing ring is as described above.

[0060] Furthermore, the interchangeable circuit board 420 is installed in the internal cavity of the small cover plate through the circuit board fastening screws 510. The interchangeable circuit board 420 mainly integrates the positioning and communication modules of the tablet, such as the radio 530. When the configuration is changed without radio communication, this module can be omitted, and the corresponding connector 440 and cable 410 can also be removed. Even if the entire circuit board is not installed, only the small cover plate needs to be installed, and the material cost of the whole machine will be greatly reduced. The interchangeable circuit board 420 is welded with a socket 520 for installing the FPC to communicate with the main board 310. In addition, the specifications of the circuit board fastening screws 510 can be designed to be the same as the small cover fastening screws 450, so that the same tool can be used to replace the configuration later to increase efficiency.

[0061] Furthermore, to ensure the signal shielding effect of the small cover module, shielding paint is sprayed on the inner side of the small cover and the inner side of the cavity on the back of the bottom shell. To further increase the shielding effect, the lower surface of the small cover is designed with a small cover shielding ridge 540 along the circumference of the replaceable circuit board, and the bottom shell is designed with a bottom shell shielding ridge 470 along the circumference of the replaceable circuit board. The circumference of the replaceable circuit board is exposed copper, and a conductive sponge can be pasted on the surface, which is equivalent to shielding the devices on both sides of the circuit board, ensuring a better shielding effect.

[0062] Due to different usage scenarios and different needs, tablets usually have various configurations. If the configuration needs to be replaced, the whole device needs to be disassembled, which is very troublesome. In this embodiment, the replaceable circuit board and the corresponding accessories that need to be replaced are installed in the rear compartment of the tablet housing, which is very convenient to replace different configurations, saving time and efficiency.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. 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 tablet, characterized in that: include: A front shell module, a bottom shell module matched with the front shell module, and a small cover module arranged on the back of the bottom shell; The small cover module comprises: a small cover, a replaceable circuit board fixed to the small cover, and a connector component.

2. The vehicle-mounted tablet according to claim 1, characterized in that: The face shell module comprises a screen, a face shell and face shell hardware which are sequentially connected from top to bottom.

3. The vehicle-mounted flat panel according to claim 2, characterized in that: The face shell comprises a protective edge, a glue overflow groove, a fitting surface and a screen supporting edge which are arranged in sequence from the outside to the inside.

4. The vehicle-mounted tablet according to claim 1, characterized in that: The bottom shell module comprises a bottom shell, a mainboard arranged on the bottom shell, and a heat dissipation block arranged between the bottom shell and the mainboard.

5. The vehicle-mounted flat panel according to claim 4, characterized in that: A circle of baffles is formed around the heat dissipation block to fix it, and a heat dissipation block boss is formed on the side of the heat dissipation block close to the mainboard, and a fin structure is formed on the outside.

6. The vehicle-mounted tablet according to claim 1, characterized in that: The central part of the small cover plate is a convex structure.

7. The vehicle-mounted tablet according to claim 1, characterized in that: A groove and a hole are left in the lower area of ​​the upper surface of the small cover plate, and a hard plastic plate is pasted thereon.

8. The vehicle-mounted tablet according to claim 1, characterized in that: A waterproof bone position is arranged around the lower surface of the small cover plate.

9. The vehicle-mounted tablet according to claim 1, characterized in that: The lower surface of the small cover is designed with small cover shielding ridges along the circumference of the replaceable circuit board, and the bottom shell is designed with bottom shell shielding ridges along the circumference of the replaceable circuit board.

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