Membrane switch structure for preventing light leakage
By introducing sliding structures, black double-sided isolation layers, anti-electromagnetic interference components and waterproof components into the membrane switch, the problem of light leakage on the side of the membrane switch LED products is solved, achieving better user experience and product performance.
Patent Information
- Application Number
- CN202421356228.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-14
AI Technical Summary
Existing film switch LED products have side light leakage problems, which affects the product's appearance aesthetics and user experience, especially in darker environments.
Design a thin film switch structure for preventing light leakage. Through the sliding structure and the elastic limit structure, a black double-sided isolation layer is used to block light. Combined with an anti-electromagnetic interference component and a waterproof component, it ensures the normal operation and waterproof performance of the thin film switch.
It effectively prevents light leakage on the side of the film switch, enhances the aesthetics and user experience of the product, ensures stable operation in humid environments, and provides nighttime visibility through the lighting module to avoid mist touching.
Smart Images
Figure CN222826259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of membrane switch structures, in particular to a membrane switch structure for preventing light leakage. Background Art
[0002] LED backlight membrane switch is mainly used for lighting the name text or pattern of the button. The light source of this membrane switch is relatively uniform. It adopts LED side lighting. Multiple LEDs are radiated to form a divergent plane light source, which provides users with a clearer visual experience, especially in a dark environment, making the button logo more eye-catching and convenient for users to operate.
[0003] At present, most membrane switch LED products on the market have the problem of side light leakage, which not only affects the aesthetic appearance of the product, but also interferes with the customer's normal use of the product, especially in a dimly lit environment. The side light leakage will cause unnecessary troubles to the user and even affect the overall performance of the product.
[0004] Therefore, in view of the fact that the above-mentioned membrane switch LED products have side light leakage, which leads to a decrease in the use effect, a membrane switch structure that prevents light leakage can be designed. By combining a sliding structure with an elastic limiting structure, the problem of side light leakage in membrane switch LED products can be solved while protecting the membrane switch. Utility Model Content
[0005] In order to overcome the problem of side light leakage in membrane switch LED products, which leads to reduced performance.
[0006] The technical solution of the utility model is: a membrane switch structure for preventing light leakage, including a panel layer, a membrane button, a black double-sided isolation layer, a conductive substrate layer, an LED lamp, an anti-electromagnetic interference component, a waterproof component, and a lighting module; the membrane switch is composed of a panel layer, a black double-sided isolation layer and a conductive substrate layer, a membrane button for touching is installed on the surface of the panel layer, a black double-sided isolation layer for blocking light is installed at the lower end of the panel layer, the conductive substrate layer is arranged at the lower end of the black double-sided isolation layer, the LED lamp is arranged on the surface of the conductive substrate layer, the anti-electromagnetic interference component is a frame structure and is installed on the outside of the membrane switch, the waterproof component is installed on the outside of the anti-electromagnetic interference component, and the lighting module with a built-in power supply is arranged on the upper end of the waterproof component.
[0007] Preferably, the panel layer is the outermost layer of the membrane switch, and its surface is printed or engraved with the logo of the membrane button, such as text, pattern, etc., to guide the user to operate. At the same time, the panel layer also has certain wear-resistant and scratch-resistant properties. The membrane button is the touch part installed on the surface of the panel layer, made of conductive material, and has good tactile and conductive properties. When the user presses the membrane button, it will contact the corresponding contact on the conductive substrate layer, thereby completing the circuit closure. The black double-sided isolation layer is used to block light. Due to the use of black material, it can effectively absorb and block light, reduce or eliminate light leaking from the side or edge of the product. The conductive substrate layer is the circuit part of the membrane switch, which carries the contacts of the membrane button and the connection circuit of the LED lamp. The LED lamp is used to provide button function indication or backlighting. The anti-electromagnetic interference component is used to shield external electromagnetic interference to ensure the normal operation of the membrane switch. The waterproof component is used to prevent moisture or other liquids from entering the inside of the membrane switch to protect the circuit from damage. The lighting module can ensure that the user can clearly see the position of the button at night.
[0008] Preferably, a metal shrapnel is installed at the lower end of the panel layer for cooperating with the membrane button pressing, and a conductive ink layer is provided on the surface of the conductive substrate layer. The metal shrapnel corresponds to the membrane button one by one. These metal shrapnel are made of materials with excellent elasticity and conductivity, such as iron and copper. When the user presses the membrane button, the button will deform downward, pushing the corresponding metal shrapnel to move downward. The metal shrapnel then contacts the contact on the conductive substrate layer, thereby completing the circuit closure. When the pressure is released, the metal shrapnel can quickly return to its original position to prepare for the next press. The conductive ink layer is composed of conductive particles and an ink base material. The conductive ink layer is deposited on the conductive substrate layer through a specific printing process to form specific circuit patterns. These patterns include contacts corresponding to the metal shrapnel and connecting circuits of the LED lights.
[0009] Preferably, the anti-electromagnetic interference component includes an insulating frame and a metal frame; the insulating frame is installed on the outside of the membrane switch, and the metal frame is installed on the outside of the insulating frame. The insulating frame provides an insulating barrier to isolate the membrane switch from the external environment to prevent electromagnetic interference signals from invading the inside of the membrane switch. The insulating frame is made of materials with good insulating properties, such as plastic or rubber. These materials not only have good insulating properties, but also have certain mechanical strength and wear resistance, and can protect the membrane switch from physical damage from the outside. The metal frame provides a conductive shielding layer, which wraps the membrane switch and the insulating frame to form a complete electromagnetic shielding structure. The metal frame is made of metal materials with good conductive properties, such as aluminum or copper. These metal materials can effectively absorb and reflect electromagnetic interference signals to prevent them from entering the inside of the membrane switch.
[0010] Preferably, the waterproof component includes a waterproof compartment and a rubber skin; the waterproof compartment is installed in a wrapped manner on the outside of the metal frame, and a rubber skin for protecting the membrane buttons is provided on the upper end of the waterproof compartment. The waterproof compartment completely wraps the metal frame and the membrane switch inside it to prevent the intrusion of moisture and humid environment. The rubber skin is installed at the upper end of the waterproof compartment to protect the membrane buttons. The rubber skin has good elasticity and waterproof properties, and can effectively block the intrusion of moisture and dust.
[0011] Preferably, the waterproof component also includes a convex rail and a slide groove; the left and right outer walls of the metal frame are integrally fixedly connected with convex rails for installing the waterproof bin, and the left and right inner walls of the waterproof bin are provided with slide grooves compatible with the convex rails, and the convex rails are slidably connected in the slide grooves. The convex rails and the slide grooves are designed to achieve quick installation between the waterproof bin and the metal frame. When the waterproof bin is installed on the metal frame, the convex rails will slide into the slide grooves to ensure precise alignment between the two. This design not only simplifies the installation process, but also improves the stability of the installation.
[0012] Preferably, the waterproof component also includes a spring pin and a pin hole; spring pins composed of a spring and a pin are installed on the front and rear outer walls of the convex rail, and pin holes matching the pins are opened on the front and rear inner walls of the slide groove. The spring elasticity pushes the pin to be inserted into the corresponding pin hole. The spring pin and the pin hole are locking structures in the waterproof component, which are used to further strengthen the connection between the waterproof bin and the metal frame. When the convex rail slides into the slide groove, the spring pin will automatically be inserted into the corresponding pin hole under the action of the elastic force of the spring, thereby fixing the waterproof bin. This design not only provides fixing force, but also allows the waterproof bin to be easily disassembled for maintenance or replacement when necessary.
[0013] Preferably, the lighting module includes a lamp post and an energy-saving lamp; the lamp post is installed at the upper end of the waterproof compartment, and the energy-saving lamp with a built-in power supply is installed in the lamp post. The lamp post is used to support and fix the energy-saving lamp to ensure the stability and safety of the energy-saving lamp. The energy-saving lamp is used to ensure that the user can clearly see the position of the buttons at night, thereby avoiding the problem of accidental touch.
[0014] Beneficial effects of the utility model:
[0015] 1. Through the close cooperation of anti-electromagnetic interference components and waterproof components, it can not only resist the intrusion of external electromagnetic waves and ensure the smooth operation of the membrane switch, but also enable the membrane switch to operate stably in a humid environment, effectively isolating the interference of water vapor. The lighting module uses efficient and energy-saving lighting performance to ensure that users can clearly identify the button position at night, thereby eliminating the possibility of accidental touch. The synergistic effect of the three not only improves the user experience, but also makes the operation more convenient and safe;
[0016] 2. When the convex rail slides into the slide groove, the spring pin will automatically insert into the corresponding pin hole under the elastic force of the spring, thereby fixing the waterproof compartment. This design not only provides fixing force, but also allows the waterproof compartment to be easily disassembled for maintenance or replacement when necessary. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The three-dimensional structure diagram of the membrane switch structure for preventing light leakage applied in the utility model is shown;
[0018] Figure 2 The diagram shown is a schematic diagram of the structure of the membrane switch for preventing light leakage applied in the utility model;
[0019] Figure 3 The diagram shown is a top view of a membrane switch structure for preventing light leakage according to the utility model;
[0020] Figure 4 The three-dimensional structure diagram of the anti-electromagnetic interference component of the membrane switch structure for preventing light leakage of the utility model is shown;
[0021] Figure 5 The three-dimensional structure schematic diagram of the waterproof component of the membrane switch structure for preventing light leakage of the utility model is shown;
[0022] Figure 6 Shown is a three-dimensional structural schematic diagram of a lighting module of a membrane switch structure for preventing light leakage according to the utility model.
[0023] Explanation of the reference numerals: 1. panel layer; 2. membrane button; 3. black double-sided isolation layer; 4. conductive substrate layer; 5. LED lamp; 601. insulating frame; 602. metal frame; 701. waterproof compartment; 702. rubber skin; 703. convex rail; 704. slide groove; 705. spring pin; 706. pin hole; 801. lamp post; 802. energy-saving lamp. DETAILED DESCRIPTION
[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0025] See also Figure 1-2The utility model provides an embodiment: a membrane switch structure for preventing light leakage, comprising a panel layer 1, a membrane button 2, a black double-sided isolation layer 3, a conductive substrate layer 4, an LED lamp 5, an anti-electromagnetic interference component, a waterproof component, and a lighting module; the membrane switch is composed of a panel layer 1, a black double-sided isolation layer 3 and a conductive substrate layer 4, a membrane button 2 for touching is installed on the surface of the panel layer 1, a black double-sided isolation layer 3 for blocking light is installed at the lower end of the panel layer 1, the conductive substrate layer 4 is arranged at the lower end of the black double-sided isolation layer 3, and the LED lamp 5 is arranged at the conductive substrate layer 4. On the surface of the electrical substrate layer 4, the anti-electromagnetic interference component is a frame structure and is installed on the outside of the membrane switch, the waterproof component is installed on the outside of the anti-electromagnetic interference component, and the lighting module with a built-in power supply is arranged on the upper end of the waterproof component. The panel layer 1 is the outermost layer of the membrane switch, and its surface is printed or engraved with the logo of the membrane button 2, such as text, pattern, etc., to guide the user to operate. At the same time, the panel layer 1 also has certain wear resistance and scratch resistance. The membrane button 2 is the touch part installed on the surface of the panel layer 1, which is made of conductive material and has good tactile and conductive properties. When used When the user presses the membrane key 2, it will contact the corresponding contact on the conductive substrate layer 4, thereby completing the circuit closure. The black double-sided isolation layer 3 is used to block light. Due to the use of black material, it can effectively absorb and block light, reduce or eliminate light leaking from the side or edge of the product. The conductive substrate layer 4 is the circuit part of the membrane switch. It carries the contacts of the membrane key 2 and the connection circuit of the LED light 5. The LED light 5 is used to provide key function indication or backlighting. The anti-electromagnetic interference component is used to shield external electromagnetic interference to ensure the normal operation of the membrane switch. The waterproof component is used to prevent moisture or other liquids from entering the membrane switch and protect the circuit from damage. The lighting module can ensure that the user can clearly see the position of the button at night. The lower end of the panel layer 1 is equipped with a metal shrapnel for pressing with the membrane key 2. A conductive ink layer is provided on the surface of the conductive substrate layer 4. The metal shrapnel corresponds to the membrane key 2 one by one. These metal shrapnel are made of materials with excellent elasticity and conductivity, such as stainless steel or phosphor copper. When the user presses the membrane key 2, the key will deform downward, pushing the corresponding metal shrapnel to move downward. The metal shrapnel then contacts the contact on the conductive substrate layer 4, thereby completing the circuit closure. When the pressure is released, the metal shrapnel can quickly return to its original position to prepare for the next press. The conductive ink layer is composed of conductive particles and an ink base material. The conductive ink layer is deposited on the conductive substrate layer 4 through a specific printing process to form a specific circuit pattern. These patterns include contacts corresponding to the metal shrapnel and connection lines of the LED lamp 5.
[0026] See also Figure 4 , Figure 6In this embodiment, the anti-electromagnetic interference component includes an insulating frame 601 and a metal frame 602; the insulating frame 601 is installed on the outside of the membrane switch, and the metal frame 602 is installed on the outside of the insulating frame 601. The insulating frame 601 provides an insulating barrier to isolate the membrane switch from the external environment to prevent electromagnetic interference signals from invading the inside of the membrane switch. The insulating frame 601 is made of materials with good insulating properties, such as plastic or rubber. These materials not only have good insulating properties, but also have certain mechanical strength and wear resistance, and can protect the membrane switch from physical damage from the outside. The metal frame 602 provides a conductive shielding layer to isolate the membrane switch. The metal frame 602 is wrapped with an insulating frame 601 to form a complete electromagnetic shielding structure. The metal frame 602 is made of a metal material with good conductive properties, such as aluminum or copper. These metal materials can effectively absorb and reflect electromagnetic interference signals to prevent them from entering the inside of the membrane switch. The lighting module includes a lamp post 801 and an energy-saving lamp 802. The lamp post 801 is installed at the upper end of the waterproof compartment 701, and the energy-saving lamp 802 with a built-in power supply is installed in the lamp post 801. The lamp post 801 is used to support and fix the energy-saving lamp 802 to ensure the stability and safety of the energy-saving lamp 802. The energy-saving lamp 802 is used to ensure that the user can clearly see the position of the button at night, thereby avoiding the problem of accidental touch.
[0027] See also Figure 5In this embodiment, the waterproof component includes a waterproof compartment 701 and a rubber skin 702; the waterproof compartment 701 is installed in a wrapped manner on the outside of the metal frame 602, and the upper end of the waterproof compartment 701 is provided with a rubber skin 702 for protecting the membrane button 2, and the waterproof component also includes a convex rail 703 and a slide groove 704; the outer walls on the left and right sides of the metal frame 602 are integrally fixedly connected with the convex rails 703 for installing the waterproof compartment 701, and the inner walls on the left and right sides of the waterproof compartment 701 are provided with slide grooves adapted to the convex rails 703 704, the convex rail 703 is slidably connected in the slide groove 704, and the waterproof component also includes a spring pin 705 and a pin hole 706; the outer walls of the front and rear sides of the convex rail 703 are equipped with spring pins 705 composed of springs and pins, and the inner walls of the front and rear sides of the slide groove 704 are provided with pin holes 706 adapted to the pins, and the spring elasticity pushes the pins to be inserted into the corresponding pin holes 706, and the waterproof chamber 701 completely wraps the metal frame 602 and the membrane switch inside it to prevent moisture and humid environment from invading, and the rubber skin 702 is installed at the upper end of the waterproof bin 701 to protect the membrane button 2. The rubber skin 702 has good elasticity and waterproof performance, and can effectively block the intrusion of moisture and dust. The design of the convex rail 703 and the slide groove 704 is to achieve quick installation between the waterproof bin 701 and the metal frame 602. When the waterproof bin 701 is installed on the metal frame 602, the convex rail 703 will slide into the slide groove 704 to ensure accurate alignment between the two. This design not only simplifies the installation process, but also improves the stability of the installation. The spring pin 705 and the pin hole 706 are locking structures in the waterproof component, which are used to further strengthen the connection between the waterproof bin 701 and the metal frame 602. When the convex rail 703 slides into the slide groove 704, the spring pin 705 will automatically insert into the corresponding pin hole 706 under the elastic force of the spring, thereby achieving the fixation of the waterproof bin 701. This design not only provides fixing force, but also allows the waterproof bin 701 to be easily disassembled for maintenance or replacement when necessary.
[0028] During operation, the user first securely installs the insulating frame 601 on the outside of the membrane switch, and then closely fits the metal frame 602 on the insulating frame 601. This installation sequence effectively prevents electromagnetic interference signals from invading the inside of the membrane switch, ensuring its stable and reliable working state.
[0029] Next, the user gently slides the convex rail 703 on the metal frame 602 into the slide groove 704, and the spring pin 705 is automatically embedded in the corresponding pin hole 706 in the slide groove 704 under the elastic force of the spring, thereby firmly fixing the waterproof bin 701. This design not only provides sufficient fixing force to ensure the stability and safety of the waterproof bin 701, but also makes it easy to disassemble when the waterproof bin 701 needs to be maintained or replaced, which is convenient and practical.
[0030] When night falls, users only need to turn on the energy-saving lamp 802 to clearly see the position of the buttons, thus avoiding the problem of accidental touch in the dark. This design not only improves the user experience, but also ensures the accuracy and safety of operation.
[0031] Through the above steps, through the cooperation of anti-electromagnetic interference components and waterproof components, not only the intrusion of external electromagnetic waves is successfully resisted, providing a guarantee for the smooth operation of the membrane switch, but also the membrane switch can be stably operated in a humid environment, effectively isolating the intrusion of water vapor. The lighting module, with its efficient and energy-saving lighting performance, ensures that users can accurately identify the position of the buttons at night, thereby completely eliminating the hidden dangers of accidental touches. The three work together, not only greatly improving the user experience, but also making the operation process more convenient and safe, solving the problem of side light leakage in membrane switch LED products, resulting in reduced use effect.
[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.
Claims
1. A membrane switch structure for preventing light leakage, comprising a panel layer (1), a membrane key (2), a black double-sided isolation layer (3), a conductive substrate layer (4), and an LED lamp (5); characterized in that: The membrane switch also includes an anti-electromagnetic interference component, a waterproof component, and a lighting module; the membrane switch is composed of a panel layer (1), a black double-sided isolation layer (3), and a conductive substrate layer (4); a membrane key (2) for touch is installed on the surface of the panel layer (1); a black double-sided isolation layer (3) for blocking light is installed at the lower end of the panel layer (1); the conductive substrate layer (4) is arranged at the lower end of the black double-sided isolation layer (3); an LED light (5) is arranged on the surface of the conductive substrate layer (4); the anti-electromagnetic interference component is a frame structure and is installed on the outside of the membrane switch; the waterproof component is installed on the outside of the anti-electromagnetic interference component; and the lighting module with a built-in power supply is arranged on the upper end of the waterproof component.
2. The membrane switch structure for preventing light leakage according to claim 1, characterized in that: A metal spring for cooperating with the membrane key (2) for pressing is installed at the lower end of the panel layer (1), and a conductive ink layer is provided on the surface of the conductive substrate layer (4).
3. The membrane switch structure for preventing light leakage according to claim 1, characterized in that: The anti-electromagnetic interference component comprises an insulating frame (601) and a metal frame (602); the insulating frame (601) is installed on the outside of the membrane switch, and the metal frame (602) is installed on the outside of the insulating frame (601).
4. The membrane switch structure for preventing light leakage according to claim 3, characterized in that: The waterproof component comprises a waterproof compartment (701) and a rubber skin (702); the waterproof compartment (701) is installed in a wrapping manner on the outside of the metal frame (602), and the upper end of the waterproof compartment (701) is provided with a rubber skin (702) for protecting the membrane keypad (2).
5. The membrane switch structure for preventing light leakage according to claim 4, characterized in that: The waterproof component further comprises a convex rail (703) and a slide groove (704); the outer walls on the left and right sides of the metal frame (602) are integrally fixedly connected with the convex rail (703) for installing the waterproof bin (701); the inner walls on the left and right sides of the waterproof bin (701) are provided with slide grooves (704) adapted to the convex rail (703); the convex rail (703) is slidably connected in the slide groove (704).
6. The membrane switch structure for preventing light leakage according to claim 5, characterized in that: The waterproof component also includes a spring pin (705) and a pin hole (706); the front and rear outer walls of the convex rail (703) are provided with a spring pin (705) composed of a spring and a pin, and the front and rear inner walls of the slide groove (704) are provided with a pin hole (706) adapted to the pin, and the spring elasticity pushes the pin to be inserted into the corresponding pin hole (706).
7. The membrane switch structure for preventing light leakage according to claim 4, characterized in that: The lighting module comprises a lamp post (801) and an energy-saving lamp (802); the lamp post (801) is installed at the upper end of the waterproof compartment (701), and the energy-saving lamp (802) with a built-in power supply is installed inside the lamp post (801).