Membrane switch and membrane switch button

Abstract

The utility model discloses a membrane switch and a membrane switch button, relates to the field of membrane switches, solves the problems that the existing device takes a membrane as a main body, the rebound reset effect is limited, and the membrane switch button is easy to damage, and adopts the following scheme that the membrane switch button comprises a bottom plate and a membrane button part; a switch conductive part is fixedly mounted at the top of the bottom plate; the thin film button part comprises a top cover thin film and a side cover thin film, a linkage piece is fixedly installed at the center of the bottom of the top cover thin film, and the linkage piece is located over the top of the switch conductive part; the top of the bottom plate is fixedly provided with four sets of elastic piece frames located on the inner sides of the side cover films, and the top faces of the elastic piece frames are tightly attached to the bottom face of the top cover film. According to the membrane switch and the membrane switch key, through the arrangement of the bottom plate and the membrane key part, the elastic piece frame can be used for assisting an operator in automatically driving the linkage piece to reset after pressing is completed, the spring column can additionally support the linkage piece from the bottom side, and the stability and the reset effect after pressing are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane switches, in particular to a membrane switch and a membrane switch key. Background Art

[0002] Membrane switches are widely used in various electronic products in recent years due to their light and thin size. In particular, membrane switches produce very little sound when pressed, making them particularly suitable for buttons or keyboards of various devices.

[0003] After searching, the application with patent number CN201720476419.3 discloses a membrane switch and a key device, wherein the membrane switch comprises a first membrane layer, a second membrane layer, a spacer layer and a protruding piece. The first membrane layer comprises a switch circuit. The spacer layer has a perforation corresponding to the switch circuit, and the first membrane layer and the second membrane layer are separated on opposite sides of the spacer layer. The protruding piece is located on the surface of the second membrane layer facing the first membrane layer and corresponds to the switch circuit, and is partially located in the perforation;

[0004] The above application document achieves the effect of sensitive buttons by reducing the distance between the conductive layer and the switch. The existing pressing film relies on its own elastic force to reset, and long-term use may lead to poor reset effect, especially during continuous key operation, which causes greater damage to the film and has low practicality.

[0005] Therefore, we propose a membrane switch and a membrane switch button. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a membrane switch and a membrane switch button, which solve the problem that the existing device uses a membrane as a main body and has limited rebound and reset effects and is easily damaged.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a membrane switch and a membrane switch button, including a bottom plate and a membrane button portion on the top side thereof;

[0008] A switch conductive part is fixedly mounted on the top of the bottom plate;

[0009] The membrane button portion includes a top cover membrane and a side cover membrane, and a linkage piece is fixedly installed at the center of the bottom of the top cover membrane, and the linkage piece is located just above the top of the switch conductive part;

[0010] Four groups of spring clip frames located inside the side cover film are fixedly installed on the top of the bottom plate, and the top surfaces of the spring clip frames are tightly attached to the bottom surface of the top cover film.

[0011] Preferably, the spring clip frame is formed by connecting the oblique spring clips and the end spring clips, and the spring clip frame is an oblique L-shaped frame;

[0012] Among them, the setting of the shape of the shrapnel frame can support the top cover film and the side cover film, thereby ensuring the rebound effect.

[0013] Preferably, the oblique springs in the spring holder are closely attached to the inner wall of the side cover film, and a spring column located at the middle end of the spring holder toward the bottom side of the spring is fixedly installed on the top of the bottom plate;

[0014] Among them, the setting of the oblique spring plates in the spring plate frame can provide support for the side cover film, while the setting of the end spring plates can provide support for the top cover film, ensuring its reset effect after subsequent pressing.

[0015] Preferably, the spring column is a table-shaped spring seat;

[0016] Among them, the setting of the spring column can support the shrapnel frame from the bottom side, thereby preventing the shrapnel frame from deforming after long-term use and affecting the subsequent key effects.

[0017] Preferably, a switch slot is provided on the top of the bottom plate, and four sets of spring clip racks in opposite positions are fixedly installed at the four corners of the switch slot;

[0018] Among them, the setting of the switch slot can position and install the shrapnel rack.

[0019] Preferably, a pressing mold base made of hard plastic is fixedly installed on the top of the membrane button part, the inner wall of the bottom end of the side cover film is tightly attached to the outer wall of the spring frame, and the bottom end of the side cover film is fixedly connected to the bottom plate.

[0020] The utility model provides a membrane switch and a membrane switch key, which have the following beneficial effects:

[0021] The membrane switch and membrane switch button, through the arrangement of the bottom plate and the membrane button part, can use the spring clip frame to assist the operator to automatically drive the linkage to reset after pressing, and the spring column can provide additional support from the bottom side to ensure stability and the reset effect after pressing, increase the service life, and solve the problem that the existing device uses the membrane as the main body with limited rebound reset effect and is easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the inner side of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the membrane button portion of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the bottom plate of the utility model.

[0026] In the figure: 1, bottom plate; 11, switch slot; 12, switch conductive part; 13, spring holder; 14, spring column; 2, membrane button part; 21, top cover membrane; 22, side cover membrane; 23, linkage; 24, pressing die seat. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 The embodiment of the utility model provides a technical solution: a membrane switch and a membrane switch button, comprising a bottom plate 1 and a membrane button part 2 on the top side thereof; a switch conductive part 12 is fixedly installed on the top of the bottom plate 1; the membrane button part 2 comprises a top cover film 21 and a side cover film 22, a linkage 23 is fixedly installed at the center of the bottom of the top cover film 21, and the linkage 23 is located just above the top of the switch conductive part 12; four groups of spring clip racks 13 located on the inner side of the side cover film 22 are fixedly installed on the top of the bottom plate 1, and the top surface of the spring clip rack 13 is tightly attached to the bottom surface of the top cover film 21;

[0029] Among them, the membrane switch and the membrane switch button, through the arrangement of the bottom plate 1 and the membrane button part 2, can use the spring clip frame 13 to assist the operator to automatically drive the linkage 23 to reset after pressing, and the spring column 14 can provide additional support from the bottom side to ensure stability and the reset effect after pressing, increase the service life, and solve the problem that the existing device uses a membrane as the main body, which has limited rebound and reset effect and is easy to be damaged.

[0030] Embodiment 2:

[0031] The spring clip frame 13 is formed by connecting the oblique spring clips and the end spring clips, and the spring clip frame 13 is an oblique L-shaped frame; wherein, the shape of the spring clip frame 13 can support the top cover film 21 and the side cover film 22, thereby ensuring the rebound effect.

[0032] The oblique spring sheets in the spring sheet holder 13 are tightly attached to the inner wall of the side cover film 22, and a spring column 14 located at the bottom side of the end spring sheets in the spring sheet holder 13 is fixedly installed on the top of the bottom plate 1; wherein, the setting of the oblique spring sheets in the spring sheet holder 13 can provide support for the side cover film 22, and the setting of the end spring sheets can provide support for the top cover film 21, thereby ensuring the reset effect after subsequent pressing.

[0033] The spring column 14 is a table-shaped spring seat; wherein, the setting of the spring column 14 can support the shrapnel frame 13 from the bottom side, thereby preventing the shrapnel frame 13 from deforming after long-term use and affecting the subsequent key-pressing effect.

[0034] A switch slot 11 is formed on the top of the bottom plate 1 , and four sets of oppositely positioned spring clip racks 13 are fixedly mounted at the four corners of the switch slot 11 ; the switch slot 11 can position and install the spring clip racks 13 .

[0035] A pressing die seat 24 made of hard plastic is fixedly mounted on the top of the membrane button part 2 , the inner wall of the bottom end of the side cover film 22 is tightly attached to the outer wall of the spring frame 13 , and the bottom end of the side cover film 22 is fixedly connected to the bottom plate 1 .

[0036] The working principle and use process of the utility model are as follows: when the device is pressed, the user presses the pressing mold seat 24 on the film button part 2 with his finger to drive the top cover film 21 to be pressed down, and synchronously drives the side cover film 22 to move downward, and drives the spring frame 13 to be pressed down and deformed when it moves. When the connecting piece 23 contacts and drives the switch conductive part 12, the user releases the finger and the spring frame 13 and the spring column 14 automatically reset the switch due to the rebound force, thereby ensuring the subsequent pressing and driving effect.

[0037] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A membrane switch and a membrane switch button, comprising a bottom plate (1) and a membrane button portion (2) on the top side thereof; Features: A switch conductive part (12) is fixedly mounted on the top of the base plate (1); The membrane keypad portion (2) comprises a top cover membrane (21) and a side cover membrane (22), a linkage member (23) being fixedly mounted at the center of the bottom of the top cover membrane (21), and the linkage member (23) being located directly above the top of the switch conductive portion (12); Four groups of spring clip frames (13) located inside the side cover film (22) are fixedly mounted on the top of the bottom plate (1), and the top surfaces of the spring clip frames (13) are tightly attached to the bottom surface of the top cover film (21).

2. A membrane switch and a membrane switch key according to claim 1, characterized in that: The spring sheet frame (13) is formed by connecting oblique spring sheets and end spring sheets, and the spring sheet frame (13) is an oblique L-shaped frame.

3. A membrane switch and a membrane switch key according to claim 2, characterized in that: The oblique springs in the spring frame (13) are tightly attached to the inner wall of the side cover film (22), and a spring column (14) located at the middle end of the spring frame (13) toward the bottom of the spring is fixedly mounted on the top of the bottom plate (1).

4. A membrane switch and a membrane switch key according to claim 3, characterized in that: The spring column (14) is a table-shaped spring seat.

5. A membrane switch and a membrane switch key according to claim 1, characterized in that: A switch slot (11) is provided on the top of the bottom plate (1), and four groups of spring clip frames (13) are fixedly mounted at four corners of the switch slot (11) and are located opposite to each other.

6. A membrane switch and a membrane switch key according to claim 1, characterized in that: A pressing mold base (24) made of hard plastic is fixedly installed on the top of the membrane button part (2), the inner wall of the bottom end of the side cover film (22) is tightly attached to the outer wall of the spring frame (13), and the bottom end of the side cover film (22) is fixedly connected to the bottom plate (1).

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