A waterproof structure of a flat ball-shaped multifunctional key on a vehicle

Abstract

The application discloses a kind of waterproof structure of vehicle-mounted flat panel spherical multifunctional key, mainly by key assembly, key small plate, key small plate support and plastic rear shell composition.The key assembly includes spherical key, key support foam glue, key support, magnetic force module, steel sheet support, key silica gel pad foam glue, key silica gel pad.Key silica gel pad in key assembly is located in the middle of key small plate support and key support, and the structure forms sandwich to cover key silica gel pad, and key small plate support is fixed by screw and plastic rear shell, and forms integrated structure piece.Key silica gel pad is fixed by key waterproof foam glue and is attached on key support, and simultaneously key silica gel pad provides positive sealing, and forms sealed closed loop.The application realizes that one key contains 5 kinds of functions, and occupies less land.The key of complete machine is provided with double-layer waterproof by key waterproof foam glue and key silica gel pad, and the structure plays the role of secondary protection, and increases secondary resistance to rainwater invasion.

Description

Technical Field

[0001] This invention relates to the structure of directional buttons for vehicle-mounted tablets, and more particularly to a waterproof structure for a spherical multi-functional button used in medium-sized industrial and agricultural electronic products. Background Technology

[0002] The tablet buttons are mainly located on the rear cover of the vehicle tablet. When the tablet is installed in the vehicle, the buttons are in a blind spot, making it difficult for the driver to distinguish the functions of the tablet buttons and making operation extremely inconvenient.

[0003] Traditional in-vehicle tablet buttons are relatively large, and multiple buttons side by side affect the overall structural stacking layout, resulting in reduced utilization of the main PCB circuit board.

[0004] The environments in which industrial and agricultural vehicles use flatbeds are relatively harsh, especially the need for waterproofing in high-temperature environments. Temperature has a great impact on the tension of silicone sealing rings. Regardless of the material, high temperatures will accelerate their aging. The higher the ambient temperature, the greater the compression deformation. Ordinary waterproof silicone ring structures are prone to failure, and over time, leaks are likely to occur, causing water to enter the entire machine. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a waterproof structure for a vehicle-mounted tablet with spherical multi-functional buttons. This structure solves the problem of waterproof ring failure and deformation in agricultural machinery vehicle-mounted tablets under long-term high-temperature and harsh environments, ensuring the long-term effectiveness of the waterproofing of the agricultural machinery vehicle-mounted button structure.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A waterproof structure for a vehicle-mounted tablet spherical multi-functional button mainly consists of a button assembly, a button board, a button board bracket, and a plastic back cover.

[0008] The button assembly includes a ball button, a button bracket foam adhesive, a button bracket, a magnetic module, a steel plate bracket, a button silicone pad foam adhesive, and a button silicone pad.

[0009] The button silicone pad inside the button assembly is located between the button board bracket and the button bracket, forming a sandwich layer that encloses the button silicone pad. The button board bracket is fixed to the plastic back cover by screws, forming an integrated structural component.

[0010] The spherical button is located on the button bracket and above the button silicone pad. It is limited by a magnetic module and supported and buffered by the button silicone pad and the mechanical button on the button plate to prevent the spherical button from sinking.

[0011] The silicone pad for the button is fixed to the button bracket by adhesive bonding with waterproof foam. At the same time, the silicone pad provides a positive seal, forming a sealed closed loop.

[0012] The button bracket foam adhesive is located on the button bracket, and the button bracket is connected to the plastic back shell through the button bracket foam adhesive to form the first layer of waterproof sealing path.

[0013] The silicone pad foam adhesive is sealed and bonded to the silicone pad of the button, forming a second waterproof sealing path.

[0014] Furthermore, the spherical button functions as a power switch when pressed forward, powered by a mechanical button on the button panel. Four Hall sensors are arranged around the spherical button, and one button structure enables five functions, corresponding to the main button, up, down, left, and right buttons respectively.

[0015] Furthermore, four magnets are arranged around the spherical button. When the spherical button slides in any direction, it will drive the magnets. Utilizing the electromagnetic effect, a signal is transmitted with the corresponding Hall sensor, thereby realizing the button function.

[0016] Furthermore, the button bracket includes a steel sheet support with a hot-melt column and a shaft groove. The steel sheet support is located above the shaft groove, and the steel sheet support is fixedly connected by the hot-melt column.

[0017] Furthermore, the button bracket is bonded to the button bracket foam on both sides, and the magnetic module is located inside the button bracket, reducing the damage to the magnetic module caused by external impact.

[0018] Furthermore, the shaft groove of the button bracket serves as a rotation groove support, and the steel plate bracket serves as a positive limiting function to prevent the rolling shaft from tilting up during rotation.

[0019] Furthermore, the magnetic module includes a magnet and a rolling shaft, and the magnet and the rolling shaft are connected by an interference fit.

[0020] The beneficial effects of this invention are:

[0021] 1. This invention allows a single button to perform five functions while occupying a small space. Compared to traditional button pressing methods, the spherical mechanical structure offers high reliability and can be used in environments with severe vibration and extreme conditions. 2. The entire button assembly is double-layered for waterproofing with waterproof foam and silicone pads, providing secondary protection against rainwater intrusion. 3. The spherical button incorporates foam and silicone pad cushioning components to prevent button jamming caused by vibrations during vehicle operation, thus improving button reliability. 4. The biggest advantage of the spherical button is that unlike mechanical buttons, it doesn't require one-to-one pressing; the scrolling motion reduces wrist fatigue and comprehensively enhances the user experience. Attached Figure Description

[0022] The technical solution and its beneficial effects of the present invention will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0023] Figure 1 This is a structural diagram of the entire machine of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 3 This is an unfolded diagram of the spherical button assembly of the present invention.

[0026] Figure 4 This is an assembly diagram of the spherical button of the present invention.

[0027] Figure 5 This is a plan view of the button board of the present invention.

[0028] Figure 6 These are front and back views of the button board bracket of this invention.

[0029] Figure 7 This is a cross-sectional view of the spherical button positions of the entire device of the present invention.

[0030] The main components shown in the diagram are: front shell assembly 100, display module 200, screen bracket 300, motherboard assembly 400, button board 500, button board bracket 600, button assembly 700, rear shell assembly 800, and sealing ring 900.

[0031] Key assembly 700 description: Spherical key 710, key bracket foam adhesive 720, key bracket 730, magnetic module 740, steel plate bracket 750, key silicone pad foam adhesive 760, key silicone pad 770.

[0032] Key bracket 730 description: steel sheet bracket hot melt column 731, shaft groove 732.

[0033] Description of magnetic module 740: magnet 741, rolling shaft 742.

[0034] Keyboard 500 Description: Hall sensor 510, mechanical button 520, keyboard positioning hole 540, button screw hole 550, keyboard FPC cable 560.

[0035] Description of button board bracket 600: button silicone pad support bone 610, button board screw post 620, button board positioning post 630. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Hall effect: Under the action of alternating current, when an alternating current is passed, a magnetic field will be generated at both ends of the conductor and an electromotive force will be induced; when a direct current is passed, a magnetic field in the opposite direction will be generated and an electromotive force will be induced; if two alternating electric fields and magnetic fields of different frequencies and intensities act on the conductor at the same time, self-induction will occur.

[0038] This invention utilizes the Hall effect principle. A rotating shaft fixed on a button bracket drives a magnet to rotate, and a corresponding Hall sensor emits a signal to determine the button function and trajectory.

[0039] like Figure 1 and Figure 2 As shown, the assembly process of the entire machine is described below:

[0040] First, assemble the display module 200 onto the front shell assembly 100, hold the pressure in the fixture for 15 seconds, then assemble the screen bracket 300 onto the front shell assembly 200 and secure it with screws.

[0041] First, install the button assembly 700 onto the rear shell assembly 800, then install the button board bracket 600 and tighten the screws to secure it. Next, assemble the button board 500 and tighten the screws to secure it. Then, assemble the main board assembly 400 onto the rear shell assembly 800 and put on the sealing ring 900.

[0042] Finally, install the front shell assembly 100 of the assembled display module 200 onto the rear shell assembly 800 and tighten the screws to secure it, thus completing the overall assembly of the vehicle-mounted tablet 001.

[0043] like Figure 4 As shown, the magnet 741 is pressed into the middle position of the rolling shaft 742 by interference fit, thus completing the structural assembly of the magnetic module 740.

[0044] like Figure 3 and Figure 4 As shown, first install the four magnetic modules 740 onto the button bracket 730, then assemble the steel plate bracket 750, and fix it by limiting and fixing it with the hot melt column 731 of the steel plate bracket. The button silicone pad 770 is fixed to the button bracket 730 by the button silicone pad foam adhesive 760. Finally, install the ball button 710 and then install the button bracket foam adhesive 720 to complete the assembly of the button assembly 700.

[0045] like Figure 5 As shown, the Hall sensor 510, mechanical button 520, and button board FPC cable 560 are fixed to the button board 500 by soldering solder paste.

[0046] like Figures 3 to 7As shown, the button board 500 is located above the button board bracket 600. The button board 500 is assembled with the button board positioning post 630 through the button board positioning hole 540, and then locked and fixed with the button board screw post 620 through the button screw hole 550.

[0047] like Figure 3 As shown, the button bracket foam adhesive 720 is located above the button assembly 700. Utilizing the adhesive properties of the foam adhesive, the button assembly 700 is sealed and bonded to the back shell assembly 800 through the button bracket foam adhesive 720, forming the first waterproof path.

[0048] like Figure 7 As shown, the button silicone pad foam adhesive 760 is located above the button silicone pad 770. Utilizing the adhesive properties of the foam adhesive, the button silicone pad 770 is sealed and bonded to the button bracket 730 through the button silicone pad foam adhesive 760, forming a second waterproof path. Structurally, it plays a secondary protection role, increasing the resistance to rainwater intrusion.

[0049] like Figure 7 As shown, the button silicone pad 770 is located above the button board bracket 600 and between the button board bracket 600 and the button bracket 730, forming a structural sandwich. The button silicone pad support bone 610 on the button board bracket 600 supports the button silicone pad 770. The button board bracket 600 is fixed to the rear shell assembly 800 by screws to prevent the button silicone pad from failing and deforming under high temperature conditions.

[0050] like Figure 4 As shown, the steel plate bracket 750 is located above the key bracket shaft groove 732. It is fixed by the hot melt column 731 of the steel plate bracket forming a locking position with melted plastic. The key bracket shaft groove 732 serves as a rotation groove support, and the steel plate bracket 750 serves as a limiting and fixing function to prevent the rolling shaft 742 from tilting up when it rotates.

[0051] like Figures 3 to 7 As shown, four magnets 741 are arranged around the spherical button 710, and four Hall sensors 510 are arranged in opposite positions to form four function buttons, corresponding to the up, down, left, and right buttons respectively.

[0052] like Figure 7 As shown, the Hall sensor 510 of the button board 500 and the magnet 741 of the magnetic module 740 are in relative positions. The button board 500 and the main board assembly 400 are connected through the button board FPC cable 560, thus completing the signal transmission of the button board 500.

[0053] like Figure 7As shown, when the spherical button 710 slides, it drives the magnetic module 740, and the rolling shaft 742 drives the magnet 741 to rotate. Using the Hall effect principle, the Hall sensor 510 on the corresponding button board 500 sends a signal to determine the button function and trajectory.

[0054] like Figure 7 As shown, when the spherical button 710 is pressed, it causes the button silicone pad 770 to press down. The mechanical button 520 on the button board bracket 600 provides mechanical power, thereby realizing the switch button function. There is only one button on the back of the whole device, thus avoiding the blind spot of the vehicle tablet.

[0055] like Figure 7 As shown, four magnets 741 are distributed around the spherical button 710, which can play a certain role in supporting it. The button silicone pad foam 760, button silicone pad 770, button small plate 500, and mechanical button 520 provide support and cushioning force to prevent the spherical button from sinking and to avoid the button from sticking due to the vibration of the flat plate during vehicle operation, thereby improving the reliability of the button.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waterproof structure for a vehicle-mounted tablet spherical multi-functional button, mainly composed of a button assembly, a button board, a button board bracket, and a plastic back cover, characterized in that: The button assembly includes a spherical button, a button bracket foam adhesive, a button bracket, a magnetic module, a steel plate bracket, a button silicone pad foam adhesive, and a button silicone pad. The button silicone pad is located between the button board bracket and the button bracket, forming a sandwich structure that encloses the button silicone pad. The button board bracket is fixed to the plastic back cover with screws, forming an integrated structural component. The spherical button is located on the button bracket and above the button silicone pad. It is limited by the magnetic module and supported and buffered by the button silicone pad and the mechanical button on the button board, preventing the spherical button from sinking. The button silicone pad is bonded to the button bracket with waterproof foam adhesive, providing a positive seal and forming a closed-loop seal. The button bracket foam adhesive is located on the button bracket, and the button bracket is connected to the plastic back cover through the button bracket foam adhesive, forming the first waterproof sealing path. The button silicone pad foam adhesive is sealed to the button silicone pad, forming the second waterproof sealing path. The spherical button functions as a power button when pressed forward, powered by a mechanical button on a button panel. Four Hall effect sensors are arranged around the spherical button, allowing for five functions: main button, up, down, left, and right buttons. Four magnets are arranged around the spherical button; sliding the button in any direction activates the magnets, using electromagnetic effects to transmit signals to the corresponding Hall effect sensors, thus enabling the button function. The button support includes a steel plate support with a hot-melt column and a shaft groove. The steel plate support is located above the shaft groove and is fixedly connected by the hot-melt column. Foam adhesive is attached to both sides of the button support, and a magnetic module is located inside the button support. The shaft groove of the button support provides rotational support, while the steel plate support provides forward limiting to prevent the scroll shaft from tilting. The magnetic module includes a magnet and a scroll shaft; the magnet and scroll shaft are connected by an interference fit.

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