A waterproof liquid crystal instrument for a two-wheeled vehicle

Abstract

The utility model discloses a waterproof liquid crystal instrument for two-wheeled vehicle, including glass cover, liquid crystal display, instrument front shell, instrument mainboard and instrument rear shell, be equipped with the positioning recess on the instrument front shell, be equipped with the positioning convex on the instrument rear shell, and the positioning convex stretches into the positioning recess, waterproof silica gel foaming strip of cross section is still equipped with circular ring structure in the positioning recess, is provided with a layer of waterproof cotton on the outer wall surface of its inboard, is equipped with the heating wire in waterproof silica gel foaming strip, and waterproof silica gel foaming strip's first, tail end adopts waterproof sealant and carries out sealing connection, still be equipped with heating control circuit on the instrument mainboard, and the both ends of heating wire are connected in heating control circuit. The utility model adopts waterproof silica gel foaming strip between the instrument front shell and instrument rear shell, and waterproof sealant is sealed and connected in waterproof silica gel foaming strip first, tail joint gap, and this mode versatility is strong, need not open mould and make to order, so the cost is extremely low, and product cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive instrument technology, specifically to a waterproof LCD instrument for two-wheeled vehicles. Background Technology

[0002] The LCD instrument panel of a two-wheeled vehicle is the core hub for vehicle intelligence and human-machine interaction. Its functions have far exceeded the simple indication of traditional mechanical instruments, evolving into a comprehensive information platform integrating data monitoring, safety warnings, navigation interaction, and vehicle condition diagnosis. Since two-wheeled vehicles are mostly used outdoors, and the LCD instrument panel is exposed, it is necessary to design a waterproof and dustproof structure for the LCD instrument panel.

[0003] The main components of an LCD instrument panel include a glass cover, an LCD screen, a front cover, a main board, and a rear cover. The areas requiring waterproofing and dustproofing are the mating areas of the front and rear covers. Currently, there are two main types of waterproofing and dustproofing structures for LCD instruments. One method involves applying adhesive around the entire circumference between the front and rear covers for waterproofing. This method has a complex manufacturing process and is very difficult to disassemble and repair. The other method involves placing a soft rubber waterproof sealing ring (closed ring) between the front and rear covers for waterproofing. However, because the sealing ring is a closed ring, it needs to be adapted to the dimensions and height of the LCD instrument, thus requiring specialized molds, resulting in higher investment and costs. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to provide a waterproof LCD instrument for two-wheeled vehicles that is simple to produce, easy to maintain and disassemble, does not require special molds, and has low operating costs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A waterproof LCD instrument for two-wheeled vehicles includes a glass cover, an LCD display screen, a front cover, a main board, and a rear cover. The glass cover is fixedly connected to the LCD display screen, the LCD display screen is fixedly connected to the front cover, the main board is fixedly connected to the front cover, and the rear cover is fixedly connected to the front cover. A positioning groove is provided on the front housing of the instrument near the rear housing. A positioning protrusion is also provided on the rear housing near the front housing, extending into the positioning groove. A waterproof silicone foam strip with a circular cross-section is also provided in the positioning groove. The waterproof silicone foam strip is located at the bottom of the positioning groove and surrounds the positioning groove. A layer of waterproof cotton is provided on the outer wall surface of the waterproof silicone foam strip facing the inner side of the front housing. A heating wire is threaded through the waterproof silicone foam strip, with the two ends of the heating wire passing through the first and last ends of the waterproof silicone foam strip, respectively. The first and last ends of the waterproof silicone foam strip are sealed together with waterproof sealant with insulating effect. The instrument mainboard is also equipped with a heating control circuit, and the two ends of the heating wire are connected to the heating control circuit.

[0006] The working principle of this utility model is as follows: When using the LCD instrument, the glass cover, LCD screen, and front shell of the instrument are connected. Then, a layer of waterproof cotton is placed on the outer wall of the front shell of the instrument facing inward. The heating wire is passed through the waterproof silicone foam strip, and the entire waterproof silicone foam strip is installed in the positioning groove. The heating wire is connected to the heating control circuit on the instrument main board. Then, the first and second ends of the waterproof silicone foam strip are sealed with waterproof sealant. After the waterproof silicone foam strip is installed, the instrument main board is connected to the front shell of the instrument. Finally, the rear shell of the instrument is connected to the front shell of the instrument to complete the assembly of the LCD instrument.

[0007] In this solution, the waterproof silicone foam strip provides overall waterproofing and dustproofing for the LCD instrument during operation. If a small amount of water accidentally enters the LCD instrument through the foam strip, the absorbent cotton on the foam strip will absorb it promptly. This double-layer protection significantly improves the sealing effect of the LCD instrument. Simultaneously, a heating wire, controlled by a heating control circuit, heats the foam strip or absorbent cotton at regular intervals. When there is moisture on the foam strip or absorbent cotton, the heating wire dries them, ensuring they remain dry and further enhancing the sealing effect of the LCD instrument.

[0008] In addition, compared with the existing technology of applying waterproof adhesive around the entire circle between the front and rear housings of the instrument and the method of arranging a soft rubber waterproof sealing ring (closed ring) between the front and rear housings of the instrument, this solution adopts a structure of waterproof silicone foam strip combined with waterproof sealant for sealing connection. The production process is simple, maintenance and disassembly are convenient, and it has strong versatility. It does not require mold opening and customization, so the cost is extremely low, which greatly reduces the product cost while maintaining product performance.

[0009] Preferably, the heating control circuit includes a power supply and a timer switch, and the heating wire and the timer switch are connected in series and then connected to the power supply.

[0010] In this way, the heating wire can be heated and turned off at a set time using a timer switch, so that no manual operation is required during use. The heating wire can heat at set times to dry the waterproof silicone foam strip and absorbent cotton.

[0011] Preferably, the heating control circuit further includes a fuse, which is connected in series with the heating wire.

[0012] In this way, by setting a fuse, excessive current in the heating circuit is avoided, ensuring the safe use of the LCD instrument.

[0013] Preferably, the outer diameter of the waterproof silicone foam strip is adapted to the size of the positioning groove, and the waterproof silicone foam strip also abuts against the positioning protrusion.

[0014] In this way, the outer diameter of the waterproof silicone foam strip is adapted to the size of the positioning groove, and the waterproof silicone foam strip also abuts against the positioning protrusion. This ensures that the waterproof silicone foam strip and the front and rear covers of the instrument are in a tight fit, thereby guaranteeing the sealing effect of the waterproof silicone foam strip.

[0015] Preferably, a first groove and a second groove are respectively provided on the side of the instrument front cover away from the instrument rear cover, the size of the first groove is adapted to the size of the liquid crystal display screen, and the size of the second groove is adapted to the size of the glass cover.

[0016] In this way, by setting the first and second grooves, the accurate installation of the LCD screen and the glass cover is ensured.

[0017] Preferably, the glass cover is bonded to the liquid crystal display screen using OCA optical adhesive, and the liquid crystal display screen is bonded to the instrument front housing using PUR hot melt adhesive.

[0018] OCA optical adhesive is a special adhesive material used for bonding transparent optical components. Using OCA optical adhesive to bond the glass cover and the LCD screen ensures that the performance of the glass cover and the LCD screen is not affected. PUR adhesive (reactive polyurethane hot melt adhesive) is an innovative adhesive that achieves high-strength bonding through moisture curing. It combines the convenience of hot melt adhesive with the durability of chemically reactive adhesive. Using PUR hot melt adhesive to bond the LCD screen and the instrument front shell ensures the stability of the bonding.

[0019] Preferably, the instrument mainboard is fixedly connected to the instrument front housing by a first screw, and the instrument rear housing is connected to the instrument front housing by a second screw.

[0020] Preferably, a connecting boss is provided on the rear housing of the instrument at a position corresponding to the second screw, and a threaded hole is provided on the connecting boss, and the second screw is connected in the threaded hole.

[0021] In this way, by setting a connecting boss and increasing the local thickness of the connecting boss, the stability of the second screw connection is ensured, while achieving a lightweight design of the instrument back cover while ensuring connection performance.

[0022] Preferably, countersunk grooves are provided on the rear housing of the instrument at positions corresponding to the second screw, and the head of the second screw is located in the countersunk groove.

[0023] In this way, by setting a countersunk groove to accommodate the head of the second screw, it is convenient to install the LCD instrument panel on the vehicle, and at the same time, it makes the overall appearance more aesthetically pleasing.

[0024] Preferably, both the front and rear covers of the instrument have rounded chamfers around their perimeter.

[0025] Compared with the prior art, this utility model uses a waterproof silicone foam strip between the front and rear housings of the instrument, and applies waterproof sealant to the joint notch at the beginning and end of the waterproof silicone foam strip for sealing. This method is highly versatile, does not require custom mold making, and therefore has extremely low cost, reducing product cost. Attached Figure Description

[0026] Appendix Figure 1 This is a schematic diagram of the structure of the waterproof LCD instrument for two-wheeled vehicles according to this utility model; Appendix Figure 2 This is an exploded view of the waterproof LCD instrument panel for two-wheeled vehicles according to this utility model; Appendix Figure 3 This is a front view of the waterproof LCD instrument panel for two-wheeled vehicles according to this utility model; Appendix Figure 4 for Figure 3 Sectional view of AA; Appendix Figure 5 for Figure 4 Enlarged view of point B in the middle; Appendix Figure 6 This is a schematic diagram of the waterproof silicone foam strip in the waterproof LCD instrument panel for two-wheeled vehicles of this utility model; Figure 7 for Figure 6 Enlarged diagram of point C in the middle.

[0027] Explanation of reference numerals in the attached drawings: 1. Instrument front housing; 2. Instrument rear housing; 3. Glass cover; 4. LCD display screen; 5. Waterproof silicone foam strip; 6. Instrument main board; 7. First screw; 8. Second screw; 9. Connecting boss; 10. Waterproof cotton. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation on the embodiments. Moreover, the method and / or process should not be limited to the steps performed in the written order; those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application.

[0031] Since the LCD instruments on two-wheeled vehicles are exposed to the elements for extended periods, a waterproof and dustproof design is necessary. Currently, there are two main types of waterproof and dustproof structures for LCD instruments. One involves applying adhesive around the entire circumference between the front and rear covers for waterproofing. This method is complex to manufacture and extremely difficult to disassemble and repair. The other method uses a soft rubber waterproof sealing ring (closed ring) between the front and rear covers. However, this method requires a closed ring that must be perfectly fitted to the dimensions of the LCD instrument, necessitating specialized molds, higher investment, and higher costs.

[0032] To address the aforementioned technical problems, this specific embodiment provides a waterproof LCD instrument panel for two-wheeled vehicles, as shown in the attached figure. Figure 1 To the attached Figure 4 As shown, the instrument includes a glass cover plate 3, a liquid crystal display screen 4, a front cover 1, a main board 6, and a rear cover 2. Both the front cover 1 and the rear cover 2 have rounded chamfers around their perimeter. A first groove and a second groove are respectively formed on the side of the front cover 1 away from the rear cover 2. The size of the first groove is adapted to the size of the liquid crystal display screen 4, and the size of the second groove is adapted to the size of the glass cover plate 3. By setting the first and second grooves, accurate installation of the liquid crystal display screen 4 and the glass cover plate 3 is ensured. Specifically, the glass cover plate 3 is fixedly connected to the liquid crystal display screen 4. In this specific embodiment, the glass cover plate 3 is bonded to the liquid crystal display screen 4 using OCA optical adhesive. OCA optical adhesive is a special adhesive material used for bonding transparent optical components. Using OCA optical adhesive to bond the glass cover plate 3 and the liquid crystal display screen 4 ensures that the performance of the glass cover plate 3 and the liquid crystal display screen 4 is not affected. The LCD display screen 4 is fixedly connected to the instrument front shell 1. In this specific embodiment, the LCD display screen 4 is bonded to the instrument front shell 1 using PUR hot melt adhesive. PUR adhesive (reactive polyurethane hot melt adhesive) is an innovative adhesive that achieves high-strength bonding through moisture curing. It combines the convenience of hot melt adhesive with the durability of chemically reactive adhesive. The use of PUR hot melt adhesive to bond the LCD display screen 4 and the instrument front shell 1 ensures the stability of the bonding.

[0033] In this specific embodiment, the instrument panel main board 6 is fixedly connected to the instrument panel front shell 1, and the instrument panel rear shell 2 is fixedly connected to the instrument panel front shell 1. Specifically, the instrument panel main board 6 is fixedly connected to the instrument panel front shell 1 by a first screw 7, and the instrument panel rear shell 2 is connected to the instrument panel front shell 1 by a second screw 8. A connecting boss 9 is provided on the instrument panel rear shell 2 at a position corresponding to the second screw 8. A threaded hole is formed on the connecting boss 9, and the second screw 8 is connected to the threaded hole. By setting the connecting boss 9, the increased local thickness of the connecting boss 9 ensures the stability of the connection of the second screw 8, while achieving a lightweight design of the instrument panel rear shell 2 while ensuring connection performance. A countersunk groove is provided on the instrument panel rear shell 2 at a position corresponding to the second screw 8, and the head of the second screw 8 is located in the countersunk groove. By setting the countersunk groove, the head of the second screw 8 is accommodated, facilitating the installation of the LCD instrument panel on the vehicle, and also making the overall appearance more aesthetically pleasing.

[0034] For details, see attached. Figure 5 As shown, a positioning groove is provided on the front housing 1 of the instrument near the rear housing 2 of the instrument, and a positioning protrusion is provided on the rear housing 2 of the instrument near the front housing 1 of the instrument. The positioning protrusion extends into the positioning groove. A waterproof silicone foam strip 5 with a circular cross-section is also provided in the positioning groove. The waterproof silicone foam strip 5 is located at the bottom of the positioning groove and is set around the positioning groove. The outer diameter of the waterproof silicone foam strip 5 is adapted to the size of the positioning groove, and the waterproof silicone foam strip 5 also abuts against the positioning protrusion. This makes the waterproof silicone foam strip 5 and the front housing 1 and the rear housing 2 of the instrument in a tight fit, thereby ensuring the sealing effect of the waterproof silicone foam strip 5.

[0035] For details, see attached. Figure 6 and attached Figure 7 As shown, a layer of waterproof cotton 10 is provided on the outer wall surface of the waterproof silicone foam strip 5 facing the inner side of the instrument front housing 1, and a heating wire (not shown) is threaded inside the waterproof silicone foam strip 5. The two ends of the heating wire pass through the first and last ends of the waterproof silicone foam strip 5, respectively, and the first and last ends of the waterproof silicone foam strip 5 (as shown in the attached diagram) Figure 7 (As shown at point D in the diagram) a waterproof sealant with insulating properties is used for sealing the connection; A heating control circuit is also provided on the mainboard 6 of the instrument, and the two ends of the heating wire are connected to the heating control circuit. The heating control circuit includes a power supply, a timer switch, and a fuse. The heating wire, fuse, and timer switch are connected in series and then connected to the power supply. The timer switch enables the heating wire to heat and turn off at set times, eliminating the need for manual operation during use. The heating wire can heat at set times to dry the waterproof silicone foam strip 5 and the absorbent cotton. By setting up the fuse, excessive current in the heating circuit is avoided, ensuring the safe use of the LCD instrument. The specific structure of the heating control circuit used in this solution is existing technology. Those skilled in the art can design it according to actual conditions, so it will not be described in detail in this solution. In actual operation, relays and other devices can be added to the heating control circuit to further improve the safety of use.

[0036] In this solution, the LCD instrument is assembled by connecting the glass cover 3, the LCD screen 4, and the front shell 1. Then, a layer of waterproof cotton 10 is placed on the outer wall of the waterproof silicone foam strip 5 facing the inside of the front shell 1, and the heating wire is passed through the waterproof silicone foam strip 5. The waterproof silicone foam strip 5 is then installed in the positioning groove. The heating wire is connected to the heating control circuit on the main board 6 of the instrument. The first and second ends of the waterproof silicone foam strip 5 are then sealed with waterproof sealant. After the waterproof silicone foam strip 5 is installed, the main board 6 of the instrument is connected to the front shell 1 of the instrument. Finally, the rear shell 2 of the instrument is connected to the front shell 1 of the instrument to complete the assembly of the LCD instrument.

[0037] In this solution, the waterproof silicone foam strip 5 provides overall waterproofing and dustproofing for the LCD instrument during operation. If a small amount of water accidentally enters the LCD instrument through the foam strip 5, the absorbent cotton on the foam strip will absorb it promptly. This double-layer protection significantly improves the sealing effect of the LCD instrument. Simultaneously, a heating wire, controlled by a heating control circuit, heats the foam strip 5 or absorbent cotton periodically. When there is moisture on the foam strip 5 or absorbent cotton, the heating wire dries them, ensuring they remain dry and further enhancing the sealing effect of the LCD instrument.

[0038] In addition, compared with the existing technology of applying waterproof adhesive around the entire circle between the front housing 1 and the rear housing 2 of the instrument and the method of arranging a soft rubber waterproof sealing ring (closed ring) between the front housing 1 and the rear housing 2 of the instrument, this solution adopts a structure of waterproof silicone foam strip 5 combined with waterproof sealant for sealing connection. It has strong versatility, does not require mold customization, so the cost is extremely low, and the product cost is greatly reduced while maintaining product performance.

[0039] Compared with the prior art, this utility model uses a waterproof silicone foam strip 5 between the front housing 1 and the rear housing 2 of the instrument, and applies waterproof sealant to the notch where the ends of the waterproof silicone foam strip 5 meet for sealing. This method is highly versatile, does not require custom mold making, and therefore has extremely low cost, reducing product cost.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A waterproof LCD instrument panel for two-wheeled vehicles, characterized in that, The instrument includes a glass cover, an LCD screen, a front cover, a main board, and a rear cover. The glass cover is fixedly connected to the LCD screen, the LCD screen is fixedly connected to the front cover, the main board is fixedly connected to the front cover, and the rear cover is fixedly connected to the front cover. A positioning groove is provided on the front housing of the instrument near the rear housing. A positioning protrusion is also provided on the rear housing near the front housing, extending into the positioning groove. A waterproof silicone foam strip with a circular cross-section is also provided in the positioning groove. The waterproof silicone foam strip is located at the bottom of the positioning groove and surrounds the positioning groove. A layer of waterproof cotton is provided on the outer wall surface of the waterproof silicone foam strip facing the inner side of the front housing. A heating wire is threaded through the waterproof silicone foam strip, with the two ends of the heating wire passing through the first and last ends of the waterproof silicone foam strip, respectively. The first and last ends of the waterproof silicone foam strip are sealed together with waterproof sealant with insulating effect. The instrument mainboard is also equipped with a heating control circuit, and the two ends of the heating wire are connected to the heating control circuit.

2. The waterproof LCD instrument for two-wheeled vehicles according to claim 1, characterized in that, The heating control circuit includes a power supply and a timer switch. The heating wire and the timer switch are connected in series and then connected to the power supply.

3. The waterproof LCD instrument for two-wheeled vehicles according to claim 2, characterized in that, The heating control circuit also includes a fuse, which is connected in series with the heating wire.

4. The waterproof LCD instrument for two-wheeled vehicles according to claim 1, characterized in that, The outer diameter of the waterproof silicone foam strip is adapted to the size of the positioning groove, and the waterproof silicone foam strip also abuts against the positioning protrusion.

5. The waterproof LCD instrument for two-wheeled vehicles according to claim 1, characterized in that, A first groove and a second groove are respectively provided on the side of the instrument front cover away from the instrument rear cover. The size of the first groove is adapted to the size of the liquid crystal display screen, and the size of the second groove is adapted to the size of the glass cover.

6. The waterproof LCD instrument for two-wheeled vehicles according to claim 1, characterized in that, The glass cover is bonded to the LCD screen using OCA optical adhesive, and the LCD screen is bonded to the instrument front cover using PUR hot melt adhesive.

7. The waterproof LCD instrument for two-wheeled vehicles according to claim 1, characterized in that, The instrument mainboard is fixedly connected to the instrument front shell by a first screw, and the instrument rear shell is connected to the instrument front shell by a second screw.

8. The waterproof LCD instrument for two-wheeled vehicles according to claim 7, characterized in that, A connecting boss is provided on the rear housing of the instrument at the position corresponding to the second screw. A threaded hole is provided on the connecting boss, and the second screw is connected in the threaded hole.

9. The waterproof LCD instrument for two-wheeled vehicles according to claim 7, characterized in that, Countersunk grooves are provided on the rear housing of the instrument at positions corresponding to the second screw, and the head of the second screw is located in the countersunk groove.

10. The waterproof LCD instrument for two-wheeled vehicles according to claim 1, characterized in that, Both the front and rear covers of the instrument have rounded chamfers around their perimeter.

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