Noise reduction switch module and electronic equipment
By introducing a sound-silenced interlayer into the electronic switch, the problems of high key noise and complex structure are solved, and a thinner and quieter switch module design is realized, reducing production costs and improving efficiency.
Patent Information
- Application Number
- CN202421034887.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing electronic switches produce obvious sound during the button pressing process, and the structure is complex, which does not conform to the original design intention of thinner film switches, increasing costs.
The combined structure of UV guide column, cover layer, metal shrapnel and silence interlayer is adopted, wherein the silence interlayer is made of foam, EVA foam or sponge of flexible PU substrate, and is arranged between the cover layer and the line layer, wrapping the metal shrapnel to eliminate noise and replace the traditional interlayer layer.
It effectively reduces button noise, simplifies the structure, reduces production costs, improves production efficiency, and meets thinner design requirements.
Smart Images
Figure CN223180995U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of switch modules, and more specifically, particularly relates to a noise-reducing switch module and an electronic device. Background Art
[0002] An electronic switch is required in some consumer electronic products (such as mobile phones, cameras, video cameras, laptop computers or PADs, etc.), electronic communications, electronic instruments, industrial control, medical equipment, the automotive industry, intelligent toys, and household appliances.
[0003] During the process of pressing the key of most existing electronic switches, obvious sounds will be generated, which is not convenient for users to get a good feedback from the key. The conventional silent electronic switch is provided with a layer of anti-silence gasket under the dome sheet or FPC. Its structure is relatively complex and the cost is increased, which does not conform to the original design intention of the thinner membrane switch. How to design a switch module that is thin and can reduce the key sound is an urgent problem to be solved in the industry.
[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a noise-reducing switch module and an electronic device are provided, in order to achieve a more practical value purpose. Summary of the Invention
[0005] In order to solve the above technical problems, the utility model provides a noise-reducing switch module and an electronic device to solve the problems of large key sound, complex structure and insufficient thinness of the switch module when the key switch is used in the prior art.
[0006] The purpose and effect of a noise-reducing switch module and an electronic device of the utility model are achieved by the following specific technical means:
[0007] A noise-reducing switch module includes a UV guide post, a covering layer, a metal elastic sheet, a sound-absorbing spacer layer, and a circuit layer. The UV guide post is arranged on the covering layer. A sound-absorbing spacer layer is arranged at the bottom of the covering layer. A hollow part corresponding to the shape of the bottom of the metal elastic sheet is opened in the middle of the sound-absorbing spacer layer. A cavity is formed between the hollow part of the sound-absorbing spacer layer and the middle of the covering layer. The metal elastic sheet is located in the cavity. The circuit layer is arranged at the bottom of the sound-absorbing spacer layer and the metal elastic sheet.
[0008] Further, the periphery of the bottom of the metal elastic sheet is coated with a sound-absorbing spacer layer, and the sound-absorbing spacer layer adopts a flexible PU-based foam, EVA foam or sponge.
[0009] Further, the covering layer includes a flat part and an arc part. The top of the sound-absorbing spacer layer is connected to the flat part. The top of the metal elastic sheet is connected to the arc part. The UV guide post is located directly above the top of the metal elastic sheet.
[0010] Furthermore, the metal elastic sheet includes an elastic conduction part and a connection part. The elastic conduction part is connected to the covering layer, the connection part is connected to the circuit layer, and the metal elastic sheet is arranged between the circuit layer and the covering layer.
[0011] Furthermore, the circuit layer is a PCB board or an FPC, and a sound-absorbing spacer layer is arranged between the circuit layer and the covering layer.
[0012] This application also provides an electronic device, including the noise reduction switch module of any one of the above-mentioned all technical means.
[0013] Compared with the prior art, the utility model has the following beneficial effects.
[0014] By arranging the sound-absorbing spacer layer, the noise generated when the switch module is pressed can be effectively reduced. The sound-absorbing spacer layer is arranged between the covering layer and the circuit layer and wraps the metal elastic sheet, enabling it to effectively ablate the noise generated by the impact of the metal elastic sheet and other components. At the same time, by replacing the traditional spacer layer with the sound-absorbing spacer layer, instead of adding a sound-absorbing gasket to the original structure, the thinner design of the switch module is satisfied, the production cost is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of a noise reduction switch module of the utility model.
[0016] Figure 2 is an exploded view of a noise reduction switch module of the utility model.
[0017] Figure 3 is an exploded structural view of a noise reduction switch module of the utility model.
[0018] In the figure, the corresponding relationship between the component names and the drawing reference numerals is as follows:
[0019] 1, UV guide post; 2, covering layer; 3, metal elastic sheet; 4, sound-absorbing spacer layer; 5, circuit layer; 6, cavity; 21, flat part; 22, arc part; 31, elastic conduction part; 32, connection part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following further describes in detail the embodiments of the utility model in conjunction with the drawings. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.
[0021] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0023] Embodiment:
[0024] As shown in the attached Figure 1 to the attached Figure 3 figures:
[0025] A noise reduction switch module includes a UV guide post 1, a covering layer 2, a metal elastic sheet 3, a sound insulation spacer layer 4, and a circuit layer 5. The UV guide post 1 is arranged on the covering layer 2. A sound insulation spacer layer 4 is arranged at the bottom of the covering layer 2. A hollow part corresponding to the shape of the bottom of the metal elastic sheet 3 is formed in the middle of the sound insulation spacer layer 4. A cavity 6 is formed between the hollow part of the sound insulation spacer layer 4 and the middle of the covering layer 2. The metal elastic sheet 3 is located in the cavity 6. The circuit layer 5 is arranged at the bottoms of the sound insulation spacer layer 4 and the metal elastic sheet 3.
[0026] Specifically, the structure of the present utility model is simple, novel and ingenious in design. The covering layer 2 is used to fix the positions of the sound insulation spacer layer 4 and the elastic part of the metal elastic sheet 3. The sound insulation spacer layer 4 plays the roles of insulation and noise reduction. When the UV guide post 1 is pressed, the metal elastic sheet 3 starts to deform downward under the pressure. When the deformation reaches the maximum amount of the structural deformation of the metal elastic sheet 3, it will instantaneously touch the circuit layer 5 below the metal elastic sheet 3, thereby forming the switching function of circuit conduction. The sound insulation spacer layer 4 is arranged between the covering layer 2 and the circuit layer 5 and wraps the metal elastic sheet 3, so that it can effectively eliminate the noise generated by the impact of the metal elastic sheet 3 and other components. At the same time, by using the sound insulation spacer layer 4 to replace the traditional spacer layer, instead of adding a sound insulation gasket to the original structure, it meets the thinner design of the switch module, reduces the production cost, and improves the production efficiency.
[0027] Among them, the periphery of the bottom of the metal elastic sheet 3 is coated with a sound-absorbing spacer layer 4. The sound-absorbing spacer layer 4 is made of flexible PU-based foam, EVA foam or sponge. The sound-absorbing spacer layer 4 made of foam material can not only play an insulating role, but also buffer the pressing impact force. The sound-absorbing property of the foam can also absorb the noise generated by the impact between the metal elastic sheet 3 and other components. At the same time, by using the sound-absorbing spacer layer 4 made of foam material to wrap the metal elastic sheet 3, the air generated when pressing the metal elastic sheet 3 can also be discharged through the air permeability of the foam, eliminating the need to specifically design an exhaust groove, reducing the production process steps and improving the production efficiency.
[0028] Among them, the covering layer 2 includes a flat portion 21 and an arc portion 22. The top of the sound-absorbing spacer layer 4 is connected to the flat portion 21, and the top of the metal elastic sheet 3 is connected to the arc portion 22. The design of the flat portion 21 and the arc portion 22 facilitates the fixation of the sound-absorbing spacer layer 4 and the metal elastic sheet 3, making its structure more stable. The UV guide post 1 is located directly above the top of the metal elastic sheet 3. The UV material of the UV guide post 1 can ensure the pressing feel while ensuring the pressing conduction stability, and reduce the pressing stroke, dissipating a certain amount of impact force physically and reducing the key pressing noise.
[0029] Among them, the metal elastic sheet 3 includes an elastic conduction portion 31 and a connection portion 32. The elastic conduction portion 31 is connected to the covering layer 2, and the connection portion 32 is connected to the circuit layer 5. The metal elastic sheet 3 is arranged between the circuit layer 5 and the covering layer 2. The connection portion 32 of the metal elastic sheet 3 is fixedly connected to the circuit on the circuit board 5. After pressing the elastic conduction portion 31 to touch the circuit on the circuit board 5, it conducts, and after the metal elastic sheet 3 elastically rebounds, it disconnects, thus forming a switching function. The metal elastic sheet 3 can be of any applicable shape, not limited to the cross-shaped setting shown in the figure.
[0030] Among them, the circuit layer 5 is a PCB board or an FPC. A sound-absorbing spacer layer 4 is arranged between the circuit layer 5 and the covering layer 2, which facilitates the fixation of the metal elastic sheet 3 and makes the entire switch module structure compact, meeting the design of a thinner switch module.
[0031] The present utility model provides an electronic device, which includes the noise-reducing switch module in any of the above embodiments. The electronic device can be an electronic device with keys such as a laptop computer, a Bluetooth keyboard, a mobile phone, a tablet computer, etc.
[0032] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.
Claims
1. A noise reduction switch module, characterized in that, Comprising: A UV guide post (1), a covering layer (2), a metal elastic sheet (3), a sound-absorbing spacer layer (4), and a circuit layer (5). The UV guide post (1) is disposed on the covering layer (2). A sound-absorbing spacer layer (4) is provided at the bottom of the covering layer (2). A hollow portion corresponding to the shape of the bottom of the metal elastic sheet (3) is formed in the middle of the sound-absorbing spacer layer (4). A cavity (6) is formed between the hollow portion of the sound-absorbing spacer layer (4) and the middle of the covering layer (2). The metal elastic sheet (3) is located within the cavity (6). The circuit layer (5) is disposed at the bottom of the sound-absorbing spacer layer (4) and the metal elastic sheet (3); The periphery of the bottom of the metal elastic sheet (3) is covered with the sound-absorbing spacer layer (4). The sound-absorbing spacer layer (4) is made of a flexible PU-based foam, an EVA foam, or a sponge.
2. The noise reduction switch module according to claim 1, wherein: The covering layer (2) includes a flat portion (21) and an arc portion (22). The top of the sound-absorbing spacer layer (4) is connected to the flat portion (21). The top of the metal elastic sheet (3) is connected to the arc portion (22). The UV guide post (1) is located directly above the top of the metal elastic sheet (3).
3. The noise reduction switch module according to claim 1, wherein: The metal elastic sheet (3) includes an elastic conduction portion (31) and a connection portion (32). The elastic conduction portion (31) is connected to the covering layer (2). The connection portion (32) is connected to the circuit layer (5). The metal elastic sheet (3) is disposed between the circuit layer (5) and the covering layer (2).
4. The noise reduction switch module according to claim 1, wherein: The circuit layer (5) is a PCB board or an FPC. A sound-absorbing spacer layer (4) is provided between the circuit layer (5) and the covering layer (2).
5. An electronic device, characterized in that, Including the noise reduction switch module according to any one of claims 1 to 4 above.