High-resilience light touch switch

Abstract

The utility model discloses a high-resilience light touch switch, which structurally comprises a shell and a mounting substrate positioned at the bottom of the shell, a first pin and a second pin are arranged on the mounting substrate, and the shell and the mounting substrate are assembled to mount and fix the first pin and the second pin. A top cover is arranged at the top of the shell, a button is arranged in the center of the top cover, a contact elastic piece is transversely arranged at the position, below the button, above the installation substrate, one end of the contact elastic piece is conducted with the second pin when the contact elastic piece is in an installation state, and an auxiliary springback mechanism is arranged at the position, between the button and the contact elastic piece, of the substrate.

Description

Technical Field

[0001] The utility model relates to the technical field of light touch switches, and more specifically to a light touch switch with high resilience. Background Art

[0002] A touch switch is an electronic switch that belongs to the category of electronic components. It has the advantages of small contact resistance, precise operating force error, and diversified specifications, and is widely used in electronic equipment and white appliances.

[0003] The tactile switches currently on the market, for example, a waterproof tactile switch disclosed in a Chinese patent with a publication (announcement) number of CN205564599U, includes a base, a spring sheet, a plunger and a switch cover. The base is located at the lower end of the tactile switch, the spring sheet is located at the upper end of the terminal and is electrically connected to the side terminal, the plunger is located at the upper end of the base, the plunger can move up and down, the switch cover is located on the outside of the plunger and is penetrated by the plunger up and down, and the switch cover is connected to the base by rivets. The waterproof tactile switch is "pushed by pushing" when in use. The plunger 3 transmits the thrust to the spring sheet 2, triggering the electrical connection between the spring sheet 2 and the center terminal 13, thereby realizing the electrical connection between the pins, and releasing the plunger 3 causes the spring sheet 2 to return to its original position, thereby disconnecting the first pin 41, the second pin 42 and the third pin 43, the fourth pin 44. The rebound of the plunger 3 depends only on the elasticity of the spring sheet 2. The single-point rebound force provided by the spring sheet 2 has a poor rebound effect, and long-term use may easily cause the spring sheet to be overloaded and unable to rebound and touch, thereby affecting the service life of the touch switch. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high resilience touch switch to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-resilience touch switch, characterized in that it includes a shell and a mounting substrate located at the bottom of the shell, a first pin and a second pin are arranged on the mounting substrate, the shell and the mounting substrate are assembled to install and fix the first pin and the second pin, a top cover is arranged on the top of the shell and a button is arranged at the center of the top cover, a contact spring is arranged horizontally above the mounting substrate and below the button, one end of the contact spring is connected to the second pin when in the installed state, and an auxiliary rebound mechanism is arranged on the mounting substrate between the button and the contact spring.

[0006] The utility model is further configured as follows: the first pin includes a contact plate and the contact plate has two first contact ends extending outside the shell, the second pin includes a contact substrate and the contact substrate has two second contact ends extending outside the shell, and the top surface of the mounting substrate is provided with accommodating recesses at positions corresponding to the first pin and the second pin.

[0007] The utility model is further configured as follows: two fixing seats with the same structure are correspondingly arranged on the top surface of the substrate, the contact spring is connected to the two fixing seats to be horizontally arranged below the button, a contact block is fixed on the top surface of the contact substrate, and when the contact spring is connected to the right fixing seat, it is connected to the contact block and the second pin; an assembly groove is opened on one side of the fixing seat, and the two ends of the contact spring are respectively extended into the two assembly grooves and are connected to the two fixing seats through fasteners.

[0008] The utility model is further configured as follows: the auxiliary rebound mechanism includes an arc-shaped seat, a plurality of reset springs are equidistantly arranged on the top of the arc-shaped seat along its arc surface, the other end of each reset spring is commonly connected to an arc-shaped stop seat adapted to the button, and a plurality of stop teeth are equidistantly and spaced apart on the inner wall surface of the arc-shaped stop seat along its inner arc surface.

[0009] The utility model is further configured as follows: the middle section of the reset spring piece is in a V-shaped structure.

[0010] The utility model is further configured as follows: a fixed sleeve is provided at the center of the top cover, the button is slidably provided in the fixed sleeve, the upper end of the button extends outside the fixed sleeve and is connected to a force-generating portion, and the lower end of the button extends outside the fixed sleeve and is connected to a clamping portion that cooperates with the contact spring sheet.

[0011] The utility model is further configured as follows: a accommodating cavity is formed at the center of the fixed sleeve, annular cover plates are fixedly provided on the inner sides of the two open ends of the accommodating cavity, a through hole is formed at the center of the annular cover plate and the inner diameter of the through hole is smaller than the inner diameter of the accommodating cavity, the button is movably arranged in the accommodating cavity and is slidingly matched with the two through holes, a limiting ring is fixedly provided on the outer wall of the button located in the accommodating cavity, and a return spring is sleeved on the outer wall of the button located between the limiting ring and the annular cover plate.

[0012] To sum up, the utility model has the following beneficial effects: when working, the button is pressed and its inner end is pressed against the contact spring sheet, the button causes the contact spring sheet to bend and contact with the first pin, and because the other end of the contact spring sheet is in contact and connected with the second pin, conduction between the first pin and the second pin is achieved, and the pressing operation is completed; when the contact needs to be disconnected, the button is released, and the contact spring sheet rebounds to the initial position and disconnects the first pin from the second pin, and when the contact spring sheet returns to its position, it drives the button to rebound to complete the resetting of the button; when the button is pressed down, the contact spring sheet is caused to bend and contact with the first pin, and at the same time the button contacts the auxiliary rebound mechanism; when the contact needs to be disconnected, the button is released, and the rebound mechanism provides auxiliary rebound for the button, which can further improve the rebound effect of the button, avoid the inability of the touch switch to be quickly disconnected due to the inability to quickly reset the button, and improve the sensitivity of the touch switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the auxiliary rebound mechanism of the utility model;

[0016] Figure 4 It is a schematic diagram of the assembly of the first pin and the second pin of the utility model;

[0017] Figure 5 It is a schematic diagram of the cooperation between the button and the fixed sleeve of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Referring to the accompanying drawings: This high resilience touch switch includes a shell 1 and a mounting substrate 10 located at the bottom of the shell 1, a first pin 11 and a second pin 12 are arranged on the mounting substrate 10, the shell 1 and the mounting substrate 10 are assembled to install and fix the first pin 11 and the second pin 12, a top cover 2 is arranged on the top of the shell 1 and a button 20 is arranged at the center of the top cover 2, a contact spring 3 is horizontally arranged above the mounting substrate 10 and below the button 20, one end of the contact spring 3 is connected to the second pin 12 when in the installed state, and an auxiliary rebound mechanism is arranged on the mounting substrate 10 between the button 20 and the contact spring 3.

[0020] When in use, the first pin 11 and the second pin 12 are placed on the mounting substrate 10, and the housing 1 and the mounting substrate 10 are assembled to install and fix the first pin 11 and the second pin 12. Four fasteners 33 (preferably bolts) are provided on the top cover 2. The fasteners 33 pass through the top cover 2 and are threadedly connected and fastened to the mounting substrate 10 to complete the assembly and fixation of the mounting substrate 10, the housing 1 and the top cover 2.

[0021] When working, the button 20 is pressed and its inner end is pressed against the contact spring 3, the button 20 causes the contact spring 3 to bend and contact the first pin 11, and the other end of the contact spring 3 is in contact with the second pin 12, thereby achieving conduction between the first pin 11 and the second pin 12, and completing the pressing operation. When the contact needs to be disconnected, the button 20 is released, and the contact spring 3 rebounds to the initial position and disconnects the first pin 11 and the second pin 12, and the contact spring 3 returns to its original position, driving the button 20 to rebound and completing the reset of the button 20;

[0022] Furthermore, when the button 20 is pressed down to cause the contact spring 3 to bend and contact the first pin 11, the button 20 contacts the auxiliary rebound mechanism. When the contact needs to be disconnected, the button 20 is released. At this time, the rebound mechanism provides auxiliary rebound for the button 20, which can further improve the rebound effect of the button 20, avoid the inability of the touch switch to be quickly disconnected due to the inability of the button 20 to quickly reset, and improve the sensitivity of the touch switch.

[0023] The first pin 11 includes a contact pad 13 and the contact pad 13 has two first contact terminals 14 extending outside the housing 1. The second pin 12 includes a contact substrate 15 and the contact substrate 15 has two second contact terminals 16 extending outside the housing 1. The top surface of the mounting substrate 10 is provided with accommodating recesses 17 at positions corresponding to the first pin 11 and the second pin 12.

[0024] When in use, the installation positions of the first pin 11 and the second pin 12 are limited by the accommodating recess 17 to ensure the installation stability of the first pin 11 and the second pin 12 and avoid position displacement of the first pin 11 and the second pin 12 during use or transportation.

[0025] Two fixing seats 30 with the same structure are correspondingly arranged on the top surface of the substrate. The contact spring 3 is connected to the two fixing seats 30 to be horizontally arranged below the button 20. A contact block 31 is fixed on the top surface of the contact substrate 15. When the contact spring 3 is connected to the right fixing seat 30, it is connected to the contact block 31 and the second pin 12; one side of the fixing seat 30 is provided with an assembly groove 32, and the two ends of the contact spring 3 extend into the two assembly grooves 32 respectively and are connected to the two fixing seats 30 through fasteners 33.

[0026] When in use, when the contact spring piece 3 is connected to the fixing seat 30, the contact spring piece 3 is pushed in from the opening side of the assembly slot 32, and then the fastener 33 is passed through the assembly slot 32 and the contact spring piece 3 to complete the installation and fixation of the contact spring piece 3. Since the contact spring piece 3 is subjected to force and rebounds in the vertical direction, the assembly slot 32 is used to limit the contact spring piece 3 in the vertical direction to prevent the contact spring piece 3 from being loosened from the fixing seat 30 due to long-term use. The end of the contact spring piece 3 is fixed by the fastener 33 to prevent the contact spring piece 3 from sliding out of the assembly slot 32.

[0027] The opening directions of the assembly slots 32 of the two fixing seats 30 are opposite to each other, thereby preventing the contact spring 3 from sliding out of the two assembly slots 32 from the same direction at the same time, thereby improving the connection stability;

[0028] Both ends of the contact spring piece 3 have a bending section, and the inner side wall of the bending section is fastened with the fixing seat 30 in the installed state, further improving the connection stability between the contact spring piece 3 and the fixing seat 30;

[0029] Both ends of the contact spring piece 3 have V-shaped sections, and the V-shaped sections are provided to ensure the stability of the contact spring piece 3 during bending and rebounding.

[0030] The auxiliary rebound mechanism includes an arc seat 4, a plurality of reset springs 40 are equidistantly arranged along the arc surface of the top of the arc seat 4, and the other end of each reset spring 40 is commonly connected to an arc stop seat 41 adapted to the button 20, and a plurality of stop teeth 42 are equidistantly and spacedly distributed along the inner arc surface of the arc stop seat 41; the middle section of the reset spring 40 is a V-shaped structure; a fixed sleeve 21 is arranged at the center of the top cover 2, and the button 20 is slidably arranged in the fixed sleeve 21, the upper end of the button 20 extends to the outside of the fixed sleeve 21 and is connected to the force part 22, and the lower end of the button 20 extends to the fixed sleeve 21. A clamping portion 23 that cooperates with the contact spring 3 is connected to the outside of the fixed sleeve 21; a receiving cavity 24 is formed at the center of the fixed sleeve 21, and an annular cover plate 25 is fixedly provided on the inner sides of the two open ends of the receiving cavity 24. A through hole 26 is formed at the center of the annular cover plate 25, and the inner diameter of the through hole 26 is smaller than the inner diameter of the receiving cavity 24. The button 20 is movably arranged in the receiving cavity 24 and is slidably matched with the two through holes 26. A limiting ring 27 is fixedly provided on the outer wall of the button 20 located in the receiving cavity, and a return spring 28 is sleeved on the outer wall of the button 20 located between the limiting ring 27 and the annular cover plate 25.

[0031] When in use, the force part 22 is pressed and the button 20 is pressed down. The button 20 is pressed down to slide toward each other along the fixed sleeve 21. The movable path of the button 20 is limited by the sliding cooperation between the limiting ring 27 and the accommodating cavity 24 and the limiting cooperation between the two annular cover plates 25 and the limiting ring 27. When the button 20 is pressed down, the limiting ring 27 slides along the accommodating cavity 24 and presses the retraction spring 28. At this time, the rebound spring is in an energy storage state. The button 20 is pressed down to cause the pressing part 23 at its lower end to press the contact spring 3 and bend the contact spring 3. The contact spring 3 is bent and contacts the contact disk 13 to realize the conduction between the first pin 11 and the second pin 12.

[0032] When the pressing part 23 contacts the contact spring piece 3, the lower end surface of the button 20 contacts the teeth 42 on the inner wall of each arc-shaped receiving seat 41. When the pressing part 23 continues to press down and causes the contact spring piece 3 to bend, the button 20 causes the inner sides of the two arc-shaped receiving seats 41 to deflect downward through the teeth 42, and at the same time, each reset spring piece 40 is bent and is in an energy storage state. When the button 20 is released, each reset spring piece 40 is reset and causes the two arc-shaped receiving seats 41 to reset. At this time, each tooth 42 causes the button 20 to rebound and reset, so as to achieve an auxiliary rebound effect.

[0033] The rebound effect of the button 20 can be further ensured by the return spring 28;

[0034] The area enclosed by the two arc-shaped retaining seats 41 is larger than the outer diameter of the button 20, thereby preventing the two arc-shaped retaining seats 41 from contacting the button 20 when they are inclined toward each other when the button 20 is pressed down, thereby preventing the button 20 from being pressed down;

[0035] The two through holes 26 are coaxial and have inner diameters that match the outer diameter of the button 20 . The outer diameters of the two limiting rings 27 match the inner diameter of the accommodating cavity 24 . The accommodating cavity 24 is a cylindrical cavity.

[0036] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A high resilience touch switch, characterized in that: The invention comprises a shell (1) and a mounting substrate (10) located at the bottom of the shell (1), wherein a first pin (11) and a second pin (12) are arranged on the mounting substrate (10), and the shell (1) and the mounting substrate (10) are assembled to mount and fix the first pin (11) and the second pin (12), wherein a top cover (2) is arranged on the top of the shell (1) and a button (20) is arranged at the center of the top cover (2), and a contact spring (3) is arranged horizontally above the mounting substrate (10) and below the button (20), wherein one end of the contact spring (3) is in conduction with the second pin (12) when in the mounted state, and an auxiliary rebound mechanism is arranged between the button (20) and the contact spring (3) on the mounting substrate (10).

2. The high resilience touch switch according to claim 1, characterized in that: The first pin (11) comprises a contact plate (13), and the contact plate (13) has two first contact terminals (14) extending outside the housing (1); the second pin (12) comprises a contact substrate (15), and the contact substrate (15) has two second contact terminals (16) extending outside the housing (1); and the top surface of the mounting substrate (10) is provided with accommodating recesses (17) at locations corresponding to the first pin (11) and the second pin (12).

3. The high resilience touch switch according to claim 2, characterized in that: Two fixing seats (30) of the same structure are correspondingly arranged on the top surface of the substrate. The contact spring (3) is connected to the two fixing seats (30) to be arranged horizontally below the button (20). A contact block (31) is fixedly arranged on the top surface of the contact substrate (15). When the contact spring (3) is connected to the right fixing seat (30), it is electrically connected to the contact block (31) and to the second pin (12).

4. The high resilience touch switch according to claim 3, characterized in that: One side of the fixing seat (30) is provided with an assembly groove (32), and two ends of the contact spring (3) extend into the two assembly grooves (32) respectively and are connected to the two fixing seats (30) via fasteners (33).

5. The high resilience touch switch according to claim 1, characterized in that: The auxiliary rebound mechanism comprises an arc seat (4), a plurality of reset springs (40) are equidistantly arranged on the top of the arc seat (4) along its arc surface, the other end of each reset spring (40) is commonly connected to an arc stop seat (41) adapted to the button (20), and a plurality of stop teeth (42) are equidistantly and spacedly distributed on the inner wall surface of the arc stop seat (41) along its inner arc surface.

6. The high resilience touch switch according to claim 5, characterized in that: The middle section of the resetting spring sheet (40) is in a V-shaped structure.

7. The high resilience touch switch according to claim 1, characterized in that: A fixed sleeve (21) is arranged at the center of the top cover (2), the button (20) is slidably arranged in the fixed sleeve (21), the upper end of the button (20) extends outside the fixed sleeve (21) and is connected to a force-applying portion (22), and the lower end of the button (20) extends outside the fixed sleeve (21) and is connected to a pressing portion (23) that cooperates with the contact spring (3).

8. The high resilience touch switch according to claim 7, characterized in that: A receiving cavity (24) is formed at the center of the fixed sleeve (21), and an annular cover plate (25) is fixedly provided on the inner sides of the two open ends of the receiving cavity (24). A through hole (26) is formed at the center of the annular cover plate (25), and the inner diameter of the through hole (26) is smaller than the inner diameter of the receiving cavity (24). The button (20) is movably arranged in the receiving cavity (24) and is slidably matched with the two through holes (26). A limiting ring (27) is fixedly provided on the outer wall of the button (20) located in the receiving cavity, and a return spring (28) is sleeved on the outer wall of the button (20) located between the limiting ring (27) and the annular cover plate (25).

Images