Motorcycle instrument waterproof shell

Abstract

The utility model provides a waterproof shell of a motorcycle instrument, relates to the technical field of vehicle instruments, and solves the problems that an existing shell is poor in sealing performance, complex to assemble and inconvenient to maintain. The shell comprises a panel, a panel support and a rear shell, liquid silica gel is integrally formed on the rear shell, and interference fit is formed between the liquid silica gel and the panel support; and the panel is connected with the rear shell through a fixing screw and is sealed by compressing liquid silica gel. The full-laminated screen assembly is installed on the back face of the panel and electrically connected with the PCBA circuit board, and the PCBA circuit board is arranged in the rear shell. According to the structure, a traditional waterproof rubber ring or an ultrasonic welding process is omitted, the assembly efficiency is improved, the waterproof reliability is enhanced, and disassembly and maintenance are convenient. The utility model has the advantages of simple structure, good sealing performance, low cost and strong applicability, and is suitable for motorcycle instrument products with higher waterproof level requirements.

Description

Technical Field

[0001] This utility model relates to the field of vehicle instrument technology, and more specifically, to a waterproof housing for a motorcycle instrument panel. Background Technology

[0002] Motorcycle gauges are essential devices used to display mileage, gear position, speed, and indicate the motorcycle's riding status. They are typically equipped with a housing to protect their internal components. Given the nature of motorcycle use, the housing needs to be waterproof; common housings consist of a top cover and a bottom cover. However, existing technology has several shortcomings:

[0003] Existing waterproof structures typically involve placing a waterproof rubber pad between the upper and lower covers, with the two surfaces contacting and pressing against each other. However, due to potential deformation or uneven surfaces of the plastic parts, the pressure between the upper and lower covers and the rubber pad may not be tight enough, resulting in an incomplete seal and allowing water to enter the instrument panel. Aging of the sealing rings also affects the sealing effect: some motorcycle instrument panels use sealing rings at the connection between the bottom and top covers for waterproofing. However, after prolonged use, these sealing rings are prone to aging and deformation, leading to a decrease in sealing effectiveness, and replacing the sealing rings is inconvenient with existing equipment.

[0004] Waterproofing Testing Results are Inadequate: Currently, two methods are generally used for waterproofing testing of motorcycle instrument panel covers with a certain curvature. One method involves creating a sealed environment, immersing the cover in water, and then inflating it. The density of air bubbles in the water is used to test the airtightness. This method generally has limited effectiveness and requires extensive preparation, typically only suitable for small sample sizes. The other method involves creating a sealed environment, inflating it, and then analyzing the subsequent depressurization to determine the airtightness and waterproofing. However, current testing devices for curved motorcycle instrument panel covers do not create a sufficiently sealed environment. During rain, rainwater often directly hits the outer glass of the instrument panel, and since there is a seam between the outer glass and the motorcycle's casing, water leakage can easily occur when rainfall reaches a certain level. Therefore, we propose an improved waterproof casing for motorcycle instrument panels. Utility Model Content

[0005] The purpose of this utility model is to address the problems raised in the existing background technology. To achieve the above-mentioned purpose, this utility model provides the following technical solution: a waterproof housing for a motorcycle instrument panel, including a panel, a panel bracket, a rear shell, liquid silicone, fixing screws, a PCBA circuit board, and a fully laminated screen assembly; a panel bracket is provided between the panel and the rear shell, the liquid silicone is integrally molded onto the rear shell, the panel and the panel bracket are connected by interference pre-compression through the liquid silicone on the rear shell, and the panel, panel bracket, and rear shell are fixed by fixing screws.

[0006] As a preferred technical solution of this utility model, the left and right sides of the liquid silicone on the back shell are interference-fitted with the panel bracket.

[0007] As a preferred technical solution of this utility model, the panel is located on the side of the panel bracket away from the back shell and is closely fitted to the panel bracket.

[0008] As a preferred technical solution of this utility model, the fixing screw passes through the panel and the panel bracket in sequence and is then threadedly connected to the rear shell.

[0009] As a preferred technical solution of this utility model, the liquid silicone completely covers the contact area between the back shell and the panel bracket.

[0010] As a preferred technical solution of this utility model, the fully laminated screen assembly is disposed on the side surface of the panel near the back cover.

[0011] As a preferred technical solution of this utility model, the PCBA circuit board is disposed inside the rear shell and is fixedly connected to the inner wall of the rear shell.

[0012] As a preferred technical solution of this utility model, the fixing screws are evenly distributed along the edges of the panel and the back cover.

[0013] As a preferred technical solution of this utility model, the fully laminated screen assembly is connected to the PCBA circuit board.

[0014] Compared with existing technologies, the advantages of this invention are as follows: The rear shell of this invention adopts an integrated molding process of liquid silicone and plastic, with the liquid silicone tightly bonded to the rear shell to form a stable and continuous sealed base. The panel and panel bracket are connected by interference-fit pre-compression through the liquid silicone on the rear shell, especially the left and right sides of the liquid silicone on the rear shell are interference-fitted with the panel bracket. This all-round, tight fit effectively fills the tiny gaps between the components, preventing water intrusion and providing reliable waterproof protection for the PCBA circuit board and fully laminated screen assembly inside the motorcycle instrument. Even in harsh weather conditions, such as heavy rain, driving on flooded roads, or during vehicle washing, the instrument can be ensured to work normally, avoiding short circuits and damage caused by water intrusion.

[0015] The fixing screws firmly secure the panel, panel bracket, and rear cover, ensuring that the liquid silicone sealant maintains an interference fit with the panel bracket and panel at all times. During long-term use of the motorcycle, even under the influence of vibration and bumps, this fastening structure can maintain the sealing effect for a long time without sealing failure, greatly improving the service life and stability of the instrument.

[0016] Compared to traditional waterproofing methods that use waterproof rubber rings, this invention eliminates the need for cumbersome installation of these rings, avoiding a series of problems caused by improper installation. Furthermore, unlike ultrasonic welding, it does not require complex processing by outsourcing to specialized suppliers. Assembly is completed simply by pre-pressing the panel, panel bracket, and back cover with liquid silicone and then securing them with screws, greatly simplifying the assembly process and improving production efficiency.

[0017] The assembly process requires relatively low skill levels from operators, without the need for specialized equipment or complex operating techniques. Ordinary workers can quickly and skillfully complete the assembly work after simple training, reducing labor costs and the defect rate caused by human error.

[0018] Since ultrasonic welding is not outsourced, the high costs associated with specialized processing suppliers are avoided. Furthermore, the integrated molding process of liquid silicone and plastic offers cost advantages for large-scale production, effectively reducing raw material and manufacturing costs.

[0019] The integrated molding of liquid silicone and plastic on the rear shell makes its structure more stable. The liquid silicone not only provides waterproofing and sealing but also enhances the overall strength of the rear shell, improving its impact and deformation resistance. During motorcycle operation, it can better withstand external pressure and vibration, protecting the internal electronic components from damage.

[0020] The fixing screws tightly connect the panel, panel bracket, and rear shell together to form a single unit. This connection method effectively resists external forces, ensuring the relative position of each component remains stable and will not loosen or shift due to vibration or other factors, thus guaranteeing the normal operation and display accuracy of the instrument. The waterproof housing has a simple structure and good adaptability to panels and rear shells of different sizes and shapes. During the design and production process, it can be flexibly adjusted according to the needs of different motorcycle models to meet diverse market demands. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the liquid silicone molding structure provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the main structure provided for this utility model;

[0024] Figure 4 A schematic diagram of the half-section structure provided for this utility model;

[0025] Figure 5 This is a partial structural schematic diagram of the present invention;

[0026] Figure 6 A three-dimensional structural diagram of this utility model.

[0027] The image shows:

[0028] 1. Panel; 2. Panel bracket; 3. Back cover; 4. Liquid silicone; 5. Fixing screws; 6. PCBA circuit board; 7. Fully laminated screen assembly. Detailed Implementation

[0029] 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.

[0030] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of this 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. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of this utility model can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] Example 1: A waterproof housing for a motorcycle instrument panel includes a panel 1, a panel bracket 2, a rear shell 3, liquid silicone 4, fixing screws 5, a PCBA circuit board 6, and a fully laminated screen assembly 7. The panel bracket 2 is positioned between the panel 1 and the rear shell 3. The liquid silicone 4 is integrally molded onto the rear shell 3. The panel 1 and the panel bracket 2 are connected by interference fit via the liquid silicone 4 on the rear shell 3. The panel 1, panel bracket 2, and rear shell 3 are fixed by the fixing screws 5. The left and right sides of the liquid silicone 4 on the rear shell 3 are interference-fitted with the panel bracket 2. The panel 1 is located on the side of the panel bracket 2 away from the rear shell 3 and is tightly fitted to the panel bracket 2. The fixing screws 5 pass through the panel 1 and the panel bracket 2 in sequence and are threadedly connected to the rear shell 3. The liquid silicone 4 completely covers the contact area between the rear shell 3 and the panel bracket 2. The fully laminated screen assembly 7 is disposed on the surface of the panel 1 closest to the rear shell 3. The PCBA circuit board 6 is disposed inside the rear shell 3 and is fixedly connected to the inner wall of the rear shell 3. The fixing screws 5 are evenly distributed along the edges of the panel 1 and the back cover 3. The fully laminated screen assembly 7 is connected to the PCBA circuit board 6.

[0032] Working principle of motorcycle instrument waterproof housing: This motorcycle instrument waterproof housing mainly consists of a panel 1, panel bracket 2, rear shell 3, liquid silicone 4, fixing screws 5, PCBA circuit board 6, and fully laminated screen assembly 7. Its working principle is based on the cooperation of each component to achieve waterproofing and instrument function, as detailed below:

[0033] During the manufacturing process, the back cover 3 is integrally molded with liquid silicone 4 and plastic. This allows the liquid silicone 4 to adhere firmly to the back cover 3, forming a complete and stable structure. The liquid silicone 4 serves as a key sealing material when the back cover 3 is connected to other components. Its tight bonding with the back cover 3 prevents the liquid silicone 4 from shifting or falling off during subsequent use, providing a fundamental guarantee for waterproofing.

[0034] During assembly, panel 1 and panel bracket 2 are aligned with the back cover 3. At this point, the liquid silicone 4 on the back cover 3 plays a crucial role, as panel 1 and panel bracket 2 are pre-pressed with the liquid silicone 4 using an interference fit. Due to the good elasticity of the liquid silicone 4, it can fully fill the tiny gaps between panel 1, panel bracket 2, and back cover 3 during the pre-pressing process. In particular, the left and right sides of the liquid silicone 4 on the back cover 3 achieve an interference fit with the panel bracket 2, further enhancing the sealing effect and preventing water from entering through the side gaps.

[0035] The panel 1, panel bracket 2, and rear cover 3 are secured together using fixing screws 5. The tightening force of the fixing screws 5 ensures that the liquid silicone 4 on the rear cover 3 maintains a tight interference fit with the panel bracket 2 and panel 1 at all times. Even when subjected to vibrations and bumps during motorcycle operation, this fastening structure ensures that the liquid silicone 4 continuously and effectively seals the joints between the components, thereby achieving reliable waterproofing.

[0036] The fully laminated screen assembly 7 is electrically connected to the PCBA circuit board 6. As the core control component of the instrument cluster, the PCBA circuit board 6 processes data from various sensors and converts it into visual information. The fully laminated screen assembly 7 is responsible for clearly displaying this information, providing the motorcycle rider with key information such as vehicle speed, engine speed, and fuel level, thus enabling the normal display function of the motorcycle instrument cluster. Through the coordinated work of all components, this waterproof housing of the motorcycle instrument cluster achieves excellent waterproof performance while ensuring the stable operation of the instrument cluster.

[0037] The working process of the waterproof housing for motorcycle instruments is as follows: First, using specific molds and processes, the rear shell 3 is processed by integrally molding liquid silicone 4 and plastic. The liquid silicone is injected into the mold and molded together with the plastic part of the rear shell 3, so that the liquid silicone 4 is firmly attached to the rear shell 3, and the position and shape of the liquid silicone 4 meet the requirements for subsequent mating with the panel 1 and panel bracket 2.

[0038] The molded back shell 3 with liquid silicone 4 is placed on the assembly station. Next, the panel support 2 is placed on the back shell 3, ensuring that the liquid silicone 4 on the back shell 3 is accurately aligned with the panel support 2, especially the left and right sides of the liquid silicone 4. Then, the panel 1 is placed on the panel support 2, again ensuring accurate positioning. A certain pressure is applied to the panel 1 using tooling equipment, causing the panel 1 and panel support 2 to achieve interference pre-compression through the liquid silicone 4 on the back shell 3. During the pre-compression process, the liquid silicone 4 undergoes elastic deformation due to compression, filling the tiny gaps between the panel 1, panel support 2, and back shell 3.

[0039] Using a screwdriver, thread the fixing screws 5 through the corresponding mounting holes on panel 1 and panel bracket 2, and then thread them into the threaded holes on the back cover 3. Tighten the fixing screws 5 in a specific order and with the required torque to ensure that panel 1, panel bracket 2, and back cover 3 are tightly secured together. The tightening of the screws further enhances the interference fit between the liquid silicone 4 and panel bracket 2 and panel 1, ensuring reliable sealing.

[0040] The fully laminated screen assembly 7 is installed at a suitable position on the side of the panel 1 near the back cover 3. Then, the fully laminated screen assembly 7 is connected to the PCBA circuit board 6 located inside the back cover 3 by means of wire connection to complete the assembly of the electrical system.

[0041] Once the motorcycle is started, the PCBA circuit board 6 begins operation, receiving signals from various sensors on the motorcycle, such as the speed sensor, engine speed sensor, and fuel level sensor. The PCBA circuit board 6 processes and analyzes this data, transmitting the processed information to the fully laminated screen assembly 7 via circuitry. The fully laminated screen assembly 7 displays the received information in intuitive digital and graphical form, providing the driver with information on the motorcycle's operating status, such as current speed, engine speed, and remaining fuel.

[0042] During motorcycle operation, various weather conditions may occur, such as rain or motorcycle washes, at which point external water may come into contact with the instrument panel housing. Because the liquid silicone 4 on the rear cover 3 forms a tight interference fit seal with the panel 1 and panel bracket 2, water cannot penetrate the housing through gaps between the panel 1 and panel bracket 2, or between the panel bracket 2 and the rear cover 3. Even when the motorcycle is subjected to vibrations or bumps, the fixing screws 5 ensure the stability of the connections between components, and the liquid silicone 4 maintains a good seal, effectively protecting the internal electronic components of the PCBA circuit board 6 and the fully laminated screen assembly 7 from water corrosion, ensuring the normal operation of the instrument panel.

[0043] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A waterproof housing for a motorcycle instrument panel, characterized in that, The device includes a panel (1), a panel bracket (2), a back shell (3), liquid silicone (4), fixing screws (5), a PCBA circuit board (6), and a fully laminated screen assembly (7). The panel bracket (2) is provided between the panel (1) and the back shell (3). The liquid silicone (4) and the back shell (3) are integrally molded on the back shell (3). The panel (1) and the panel bracket (2) are connected by interference pre-compression through the liquid silicone (4) on the back shell (3). The panel (1), the panel bracket (2), and the back shell (3) are fixed by fixing screws (5).

2. The waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The liquid silicone (4) on the back shell (3) is press-fitted with the panel bracket (2) on the left and right sides.

3. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The panel (1) is located on the side of the panel bracket (2) away from the rear shell (3) and is closely fitted to the panel bracket (2).

4. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The fixing screw (5) passes through the panel (1) and the panel bracket (2) in sequence and is then threadedly connected to the back shell (3).

5. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The liquid silicone (4) completely covers the contact area between the back shell (3) and the panel support (2).

6. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The fully laminated screen assembly (7) is disposed on the side surface of the panel (1) near the back cover (3).

7. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The PCBA circuit board (6) is disposed inside the rear shell (3) and is fixedly connected to the inner wall of the rear shell (3).

8. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The fixing screws (5) are evenly distributed along the edges of the panel (1) and the back cover (3).

9. A waterproof housing for a motorcycle instrument panel according to claim 1, characterized in that, The fully laminated screen assembly (7) is connected to the PCBA circuit board (6).

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