Thin film touch switch
By using a combined structure of base, L-shaped fixing block, V-shaped clamp, self-locking mechanism and tapered block in the film touch switch, the problem of the edge of the film layer being susceptible to external forces is solved, and a more stable seal is achieved and prolonged service life.
Patent Information
- Application Number
- CN202421169165.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-23
AI Technical Summary
During the use of existing film light-touch switches, the edges of the film layer are easily affected by external forces, resulting in the outer ring being glued and tilted or the dust-proof film displacement, resulting in the loss of dust-proof and waterproof effects, the service life is reduced, and it affects normal use.
Adopt a structure including a base, L-shaped fixing block, V-shaped clamp, self-locking mechanism and tapered block, and fix the edge of the film through the combination of V-shaped clamp and tapered block to prevent curling and displacement, and to lock it through self-locking. The mechanism realizes limit self-locking to ensure sealing.
Effectively prevent the edges of the film edges and displacement, improve sealing, extend service life, and ensure the normal operation of the film light-touch switch.
Smart Images
Figure CN222300515U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of light touch switches, in particular to a thin film light touch switch. Background Art
[0002] The membrane touch switch is a compact and high-performance electronic component. This switch has excellent sealing performance, is waterproof, dustproof, and resistant to harmful gas erosion, and can maintain stable performance in harsh environments. Its design is light and thin, and it is easy to integrate into various electronic devices, such as medical equipment, instruments, industrial control and household appliances, to achieve switching, adjustment and setting functions.
[0003] The existing membrane touch switch is composed of the following components: a button, a film layer, a metal sheet, a pin, and a base. The working principle is that when an external force (such as finger pressure) acts on the switch, the contact of the film layer will contact the metal sheet, causing the metal sheet to deform and connect with the pin to form a closed circuit. When the external force disappears, the film layer and the metal sheet will return to their original positions, and the contact will break contact with the metal sheet, that is, the circuit is disconnected.
[0004] At present, the membrane touch switch in the prior art has the following disadvantages: the membrane layer is connected and sealed with the base by means of an adhesive. During use, the edge of the membrane layer is easily affected by external forces, resulting in the outer ring being glued and warped, or after long-term use, the dustproof film is displaced, resulting in the loss of dustproof and waterproof effects, resulting in poor contact and reduced service life, affecting the normal use of the membrane touch switch. The performance of the membrane layer set in this way is unstable. Therefore, a membrane touch switch is proposed to address the above problems. Utility Model Content
[0005] In order to make up for the shortcomings of the existing membrane touch switch, a membrane touch switch is proposed to solve the problem that the edge of the membrane layer is easily affected by external forces during use, resulting in the outer ring being glued and warped, or the dustproof film is displaced after long-term use, resulting in the loss of dustproof and waterproof effects, resulting in poor contact and reduced service life, affecting the normal use of the membrane touch switch. The performance of the membrane layer set in this way is unstable.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a membrane touch switch described in the utility model comprises a base, a membrane is arranged at the top of the base, a first contact pin and a second contact pin are fixedly arranged on both sides of the bottom end of the base, the other ends of the first contact pin and the second contact pin extend to the inner bottom end of the base, a first contact point is fixedly arranged on one end of the first contact pin located inside the base, a spring is fixedly arranged on the top of the first contact point, and a second contact point is fixedly arranged on one end of the second contact pin located inside the base, L-shaped fixing blocks are fixedly arranged at the four corners of the top end of the base, and a rotating shaft is rotatably arranged between each two adjacent L-shaped fixing blocks through a bearing, a V-shaped clip is fixedly arranged on the rotating shaft, and the V-shaped clip has four groups and is respectively located at the top ends of the four sides of the base, one end of the rotating shaft passes through the L-shaped fixing block, and a self-locking mechanism is arranged at the end, and through the cooperation between the above structures, the edge of the membrane can be fixed when the membrane is installed, effectively preventing the problem of affecting its life due to the warping displacement of the edge of the membrane.
[0007] Preferably, the self-locking mechanism includes a locking groove provided on the rotating shaft, and a movable cavity provided in the L-shaped fixed block, a locking pin being movably arranged in the movable cavity, and the locking pin and the locking groove are in a vertical state of 90 degrees before assembly, and when the V-shaped clip is rotated 90 degrees to clamp the top of the film, the locking pin is inserted into the locking groove to realize self-locking of the rotating shaft, and through the cooperation of the self-locking mechanism, the V-shaped clip is rotated 90 degrees and the top of the film is clamped to limit its position and self-lock it, thereby preventing the V-shaped clip from reversing and loosening.
[0008] Preferably, a plurality of conical blocks are fixedly arranged in an inner array of the V-shaped clamping strip, and the fixing friction force on the film is improved through the cooperation of the plurality of conical blocks, making the film more stable.
[0009] Preferably, an assembly groove corresponding to the film is provided at the top of the base, and the film is fixed on the base by an adhesive, and the interior of the base is isolated and sealed by the cooperation between the film and the base.
[0010] Preferably, a button is fixedly provided at the center of the top end of the reed, and the cooperation of the button makes the pressing operation of the reed more comfortable.
[0011] Beneficial effects of the utility model:
[0012] The utility model provides a membrane touch switch. When a worker assembles the membrane touch switch, when the membrane moves toward the top of the base, the edge of the membrane pushes one side plate of the V-shaped clamping strip to swing outside the base, so that the other side plate of the V-shaped clamping strip swings to the top of the membrane, pressing the membrane thereunder, and at the same time, the conical block squeezes the top edge of the membrane to fix the edge of the membrane to prevent the edge of the membrane from warping and displacement, resulting in reduced sealing and affecting the use;
[0013] With the cooperation of the self-locking mechanism, the V-shaped clip is limited and self-locked, which effectively prevents the V-shaped clip from reversing and loosening, resulting in no auxiliary fixation and limit of the film. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0015] Figure 1 It is a three-dimensional schematic diagram of the unassembled structure of the entire film;
[0016] Figure 2 yes Figure 1 A cross-sectional view of
[0017] Figure 3 It is an enlarged view of the structure of the self-locking mechanism;
[0018] Figure 4 It is a three-dimensional cross-sectional view of the overall film assembly structure;
[0019] Figure 5 yes Figure 4 A magnified view of the structure at B in the middle;
[0020] Legend:
[0021] 1. Base; 2. First contact pin; 3. Second contact pin; 4. First contact point; 5. Reed; 6. Second contact point; 7. L-shaped fixing block; 8. Rotating shaft; 9. V-shaped clamping strip; 10. Self-locking mechanism; 101. Locking groove; 102. Movable cavity; 103. Locking pin; 11. Conical block; 12. Film; 13. Button. DETAILED DESCRIPTION
[0022] 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 of 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.
[0023] Specific examples are given below.
[0024] See also Figure 1-Figure 5The utility model discloses a membrane touch switch, comprising a base 1, a membrane 12 is arranged at the top of the base 1, a mounting groove corresponding to the membrane 12 is opened at the top of the base 1, and the membrane 12 is fixedly arranged on the base 1 by an adhesive, a first contact pin 2 and a second contact pin 3 are respectively fixedly arranged on both sides of the bottom end of the base 1, the other ends of the first contact pin 2 and the second contact pin 3 are extended to the inner bottom end of the base 1, and a first contact point 4 is fixedly arranged on one end of the first contact pin 2 located inside the base 1, so that A spring sheet 5 is fixedly arranged at the top of the first contact 4, a button 13 is fixedly arranged at the top center of the spring sheet 5, a second contact 6 is fixedly arranged at one end of the second contact foot 3 located inside the base 1, L-shaped fixing blocks 7 are fixedly arranged at the four corners of the top of the base 1, and a rotating shaft 8 is rotatably arranged between each two adjacent L-shaped fixing blocks 7 through a bearing, a V-shaped clip 9 is fixedly arranged on the rotating shaft 8, and a plurality of conical blocks 11 are fixedly arranged on the inner array of the V-shaped clip 9, and the V-shaped clip 9 has four groups of Located at the top of the four sides of the base 1, one end of the rotating shaft 8 passes through the L-shaped fixing block 7, and the end is provided with a self-locking mechanism 10. When working, in order to prevent the film 12 from being affected by external forces during use, causing the outer ring to be glued and warped, or shifting after long-term use, resulting in the loss of dustproof and waterproof effects, resulting in poor contact and reduced service life, affecting the normal use of the membrane touch switch, first when the staff assembles the membrane touch switch, the adhesive is applied to the assembly groove of the film 12 and the top of the base 1, and then the film 12 is pressed The film 12 is pressed into the assembly groove. At the same time, when the film 12 moves toward the top of the base 1, the edge of the film 12 pushes one side plate of the V-shaped clip 9 to swing to the outside of the base 1. When the bottom end of the film 12 contacts and bonds with the top of the base 1, the other side plate of the V-shaped clip 9 swings to the top of the film 12, pressing the film 12 underneath it. At the same time, the V-shaped clip 9 drives a number of conical blocks 11 to rotate, so that the conical blocks 11 squeeze the top edge of the film 12, further preventing the edge of the film 12 from warping and displacing, resulting in a decrease in sealing performance and affecting use.
[0025] Furthermore, the self-locking mechanism 10 includes a locking groove 101 provided on the rotating shaft 8, and an active cavity 102 provided in the L-shaped fixing block 7, a locking pin 103 is movably provided in the active cavity 102, and the locking pin 103 and the locking groove 101 are in a 90-degree vertical state before assembly. When the V-shaped clamping strip 9 rotates 90 degrees to clamp the top of the film 12, the locking pin 103 is inserted into the locking groove 101 to realize the self-locking of the rotating shaft 8. When working, after the V-shaped clamping strip 9 assists in fixing the film 12, in order to prevent the V-shaped clamping strip from 9 is reversed and loosened. When the V-shaped clamping strip 9 rotates, it drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the locking groove 101 to rotate. When the V-shaped clamping strip 9 clamps the film 12, the rotating shaft 8 also drives the locking groove 101 to rotate ninety degrees, so that the locking groove 101 rotates to just below the locking pin 103. Under the action of gravity, the locking pin 103 falls into the locking groove 101 to limit the rotating shaft 8, that is, the rotation angle of the V-shaped clamping strip 9 is locked, which effectively prevents the V-shaped clamping strip 9 from reversing and loosening, resulting in no auxiliary fixing and limiting of the film 12.
[0026] Working principle: In order to prevent the outer ring of the film 12 from warping due to external force during use, or from shifting after long-term use, resulting in the loss of dustproof and waterproof effects, resulting in poor contact and reduced service life, affecting the normal use of the membrane touch switch, first when the staff assembles the membrane touch switch, adhesive is applied to the assembly groove between the film 12 and the top of the base 1, and then the film 12 is pressed into the assembly groove. At the same time, when the film 12 moves toward the top of the base 1, the edge of the film 12 pushes one side plate of the V-shaped clip 9 to swing toward the outside of the base 1. When the bottom end of the film 12 contacts and bonds with the top of the base 1, the other side plate of the V-shaped clip 9 swings to the top of the film 12, pressing the film 12 underneath it, and at the same time, the V-shaped clip 9 drives several conical blocks 11 to rotate The V-shaped clip 9 is locked, which effectively prevents the V-shaped clip 9 from reversing and loosening, and the rotation shaft 8 is driven to rotate, and the rotation shaft 8 drives the locking groove 101 to rotate. When the V-shaped clip 9 clamps the film 12, the rotation shaft 8 also drives the locking groove 101 to rotate ninety degrees, so that the locking groove 101 is rotated to the bottom of the locking pin 103. Under the action of gravity, the locking pin 103 falls into the locking groove 101, limiting the rotation angle of the rotating shaft 8, that is, the rotation angle of the V-shaped clip 9 is locked, which effectively prevents the V-shaped clip 9 from reversing and loosening, resulting in no auxiliary fixing and limiting of the film 12.
[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A membrane touch switch, characterized in that: The invention comprises a base (1), a thin film (12) is arranged at the top of the base (1), a first contact pin (2) and a second contact pin (3) are respectively fixedly arranged on both sides of the bottom of the base (1), the other ends of the first contact pin (2) and the second contact pin (3) both extend to the bottom end of the base (1), a first contact point (4) is fixedly arranged on one end of the first contact pin (2) located inside the base (1), a reed (5) is fixedly arranged on the top of the first contact point (4), and the second contact pin (3) is fixedly arranged on the top of the second contact point (4). A second contact (6) is fixedly arranged at one end inside the base (1), L-shaped fixing blocks (7) are fixedly arranged at the four corners of the top end of the base (1), and a rotating shaft (8) is rotatably arranged between each two adjacent L-shaped fixing blocks (7) via a bearing, and a V-shaped clamping strip (9) is fixedly arranged on the rotating shaft (8), and the V-shaped clamping strip (9) has four groups respectively located at the top ends of the four sides of the base (1), and one end of the rotating shaft (8) passes through the L-shaped fixing block (7), and the end is provided with a self-locking mechanism (10).
2. A membrane touch switch according to claim 1, characterized in that: The self-locking mechanism (10) comprises a locking groove (101) provided on the rotating shaft (8) and a movable cavity (102) provided in the L-shaped fixed block (7). A locking pin (103) is movably provided in the movable cavity (102). The locking pin (103) and the locking groove (101) are in a vertical state of 90 degrees before assembly. When the V-shaped clamping strip (9) rotates 90 degrees to clamp the top end of the film (12), the locking pin (103) is inserted into the locking groove (101) to realize the self-locking of the rotating shaft (8).
3. A membrane touch switch according to claim 1, characterized in that: A plurality of conical blocks (11) are fixedly arranged in an array inside the V-shaped clamping strip (9).
4. A membrane touch switch according to claim 1, characterized in that: The top of the base (1) is provided with an assembly groove corresponding to the film (12), and the film (12) is fixed on the base (1) by means of an adhesive.
5. The membrane touch switch according to claim 1, characterized in that: A button (13) is fixedly arranged at the center of the top end of the reed (5).