Multi-loop touch switch

Abstract

The utility model provides a multi-loop touch switch, which comprises a base, a cover plate, a button and four terminal pins, two of the terminal pins are combined into a first group of terminals, the other two terminal pins are combined into a second group of terminals, the multi-loop touch switch further comprises a metal reed, the metal reed is movably arranged in the base and has a pressed state and a reset state, and the button is arranged on the cover plate. The two terminal pins of the first group of terminals extend into the movement track range of the metal reed; the metal reed is connected with an insulation transmission piece, a metal dome is arranged below the insulation transmission piece, the metal dome partially contacts with one terminal pin of the second group of terminals normally, and the other terminal pin of the second group of terminals partially extends to the position below the metal dome. According to the utility model, the connecting plastic sheet is replaced by the insulating transmission piece, and the insulating transmission piece only plays a role in insulating transmission, so that the electric switch can be made to be smaller and lighter, thereby being capable of bearing larger impact and reducing or almost completely avoiding the possibility of mistaken opening caused by impact.

Description

Technical Field

[0001] The utility model belongs to the technical field of switches, in particular to a multi-circuit light touch switch. Background Art

[0002] The applicant previously applied for a multi-circuit light touch switch, and its publication number is CN117831979A. The patent application discloses a high-synchronization multi-circuit light touch switch, which uses two metal springs on a connecting plastic sheet to connect the circuit, and uses the metal springs themselves to disconnect the circuit. Since the metal springs in the multi-circuit are arranged in parallel, and the connecting plastic sheet needs to be installed with metal springs, the connecting plastic sheet itself is large in size, occupies a large space, and is heavy, which brings great resistance to the reset of the metal spring. In addition, since the connecting plastic sheet itself is heavy and the elastic force of the metal spring is insufficient, it is very likely that the connecting plastic sheet will be affected by inertia and gravity to connect the circuit under impact, causing false opening.

[0003] In addition, the bending height of the connecting plastic sheet is too large, and the strength and life requirements of the metal material are too high. After the switch is operated for a long time, the bent metal contact foot is prone to fatigue, resulting in changes in the bending height or breakage, thereby making the switch function ineffective. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to design a light touch switch to reduce the possibility of accidental opening.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multi-circuit touch switch comprises a base, a cover plate, a button and terminal pins, wherein the cover plate partially presses and fixes the button on the base, wherein there are four terminal pins, two of which are combined into a first group of terminals, and the other two are combined into a second group of terminals, and further comprises a metal spring sheet, which is movably arranged in the base and has a compressed state and a reset state, wherein the two terminal pins of the first group of terminals both extend within the range of the movable track of the metal spring sheet, and when the metal spring sheet is in the compressed state, it abuts against the two terminal pins of the first group of terminals, and when the metal spring sheet is in the reset state, the metal spring sheet is separated from the two terminal pins of the first group of terminals; an insulating transmission member is connected to the metal spring sheet, and a pot sheet is provided below the insulating transmission member, wherein the pot sheet is partially in contact with one of the terminal pins of the second group of terminals, and the other terminal pin of the second group of terminals partially extends below the pot sheet.

[0007] Preferably, the base is provided with a first groove for the metal spring to be embedded in and move up and down, and both terminal pins of the first group of terminals extend into the first groove.

[0008] Preferably, the base is provided with a second groove for the insulating transmission part to be embedded and moved, and the pot piece and the insulating transmission part are arranged in the second groove, wherein the two terminal feet of the second group of terminals extend into the second groove, the second groove is located in the middle position of the base, and the first groove is arranged on the periphery of the second groove.

[0009] Preferably, the pot piece is a circular metal spring piece with a raised center.

[0010] Preferably, silver contacts are provided at the contact positions between the pot piece, the metal spring sheet and the terminal pin.

[0011] Preferably, the terminal pins are integrally injection-molded on the base, and the cover plate is buckled with the base.

[0012] Preferably, the button is made of silicone.

[0013] Preferably, the portion of the metal spring sheet that is in constant contact with the first group of terminals is a flat surface without any bends, and the metal spring sheet is a square structure as a whole.

[0014] Preferably, the second groove is separated from the first groove by a baffle, the baffle is an integral structure with the base, and a slot is provided on the baffle for the elastic connecting part of the metal spring to move.

[0015] Preferably, a sunken area is provided on the base, the sunken area is a second groove, and the inner wall of the sunken area forms a positioning pot piece.

[0016] The beneficial effects of the utility model are as follows: the utility model replaces the connecting plastic sheet with an insulating transmission member, and the function of the insulating transmission member is only to play the role of insulating transmission, so it can be made smaller and lighter, so that it can withstand greater impacts, reduce or almost completely avoid the possibility of erroneous opening caused by impacts, and the metal spring piece is flat and not bent, and when it is in action, it is only slightly pre-stressed and bent to contact the convex point on the base, and even if it is operated for a long time at a high frequency, it will not be deformed. The square structure of the metal spring piece can ensure stability, and there will be no excessive tilting to cause premature power-on contact. When not in action, even if one side is tilted, the other side will not be in contact, and the circuit will not be turned on prematurely. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall external structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the first embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure in which the terminal pins are located on the base in the first embodiment of the utility model;

[0020] Figure 4 This is a structural exploded view of the first embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of a metal spring sheet according to a first embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the base of Example 2.

[0023] Figure numerals: 1. Base; 11. Snap-on protrusion; 12. First groove; 13. Second groove; 2. Cover plate; 21. Snap-on portion; 22. Slot; 3. Button; 4. First group of terminals; 5. Second group of terminals; 6. Metal spring; 61. Connecting portion; 62. Elastic connecting portion; 7. Insulating transmission member; 8. Pot piece. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1

[0026] See also Figure 1-Figure 5, as shown in the figure, is a touch switch, including a base 1, a cover plate 2, a button 3 and terminal pins. The cover plate 2 partially presses and fixes the button 3 on the base 1. In this embodiment, a buckling structure that is buckled with the cover plate 2 is provided around the base 1, so that the cover plate 2 and the base 1 are directly buckled without screws. Specifically, a clamping protrusion 11 is provided around the base 1, and a corresponding clamping portion 21 extending downward is provided on the cover plate 2. The clamping portion 21 is provided with a clamping groove 22. After the cover plate 2 is buckled with the base 1, the clamping protrusion 11 on the base 1 is clamped into the clamping groove 22 of the cover plate 2. In this embodiment, there are four terminal pins, which are in groups of two, two of which are combined into a first group of terminals 4, and the other two terminal pins are combined into a second group of terminals 5. It also includes a metal spring 6, which is movably arranged in the base 1 and has a compressed state and a reset state. The two terminal pins of the first group of terminals 4 extend to the metal spring Within the range of the activity trajectory of the sheet 6, when the metal spring sheet 6 is under pressure, it abuts against the two terminal pins of the first group of terminals 4, and when the metal spring sheet 6 is in the reset state, the metal spring sheet 6 is separated from the two terminal pins of the first group of terminals 4; the metal spring sheet 6 of this embodiment includes a peripheral connecting portion 61 and a middle elastic connecting portion 62, wherein the metal spring sheet 6 is a rectangle as a whole, the elastic connecting portion 62 connects the metal spring sheet 6 diagonally, and the middle of the elastic connecting portion 62 is arched upward, and an insulating transmission member 7 is connected to the metal spring sheet 6. The insulating transmission member 7 of this embodiment is installed on the elastic connecting portion 62 of the metal spring sheet 6, and can be connected by integral injection molding, snap connection, bonding, etc., and a pot sheet 8 is provided below the insulating transmission member 7, and a portion of the pot sheet 8 is often in contact with one of the terminal pins of the second group of terminals 5, and another terminal pin of the second group of terminals 5 partially extends to the bottom of the pot sheet 8. The pot piece 8 described in this embodiment is a circular metal spring piece with a raised middle. The pot piece 8 is a common name in the industry. In this embodiment, the contact positions between the pot piece 8, the metal spring piece 6 and the terminal pins are all provided with silver contacts to ensure the contact effect. In this embodiment, when the button of the switch is pressed, the lower part of the button touches the insulating transmission member, which not only drives the metal spring piece to be pressed down, but also the lower part of the insulating transmission member touches the pot piece. When the periphery of the metal spring piece is pressed down to contact with both terminal pins of the first group of terminals, the first group of terminals is connected. In this embodiment, the conductive position of each terminal pin should protrude from the installed position, so that after the metal spring piece contacts with the first group of terminals, the other positions of the metal spring piece can also be pressed down, forming an elastic contact between the metal spring piece and the first group of terminals, forming a better contact effect. Almost at the same time when the metal spring piece contacts with the first group of terminals, the second group of terminals also contacts with the middle position of the pot piece, forming a passage for the second group of terminals, and then both groups of terminal pins are connected.

[0027] In this embodiment, the metal spring sheet is flat and not bent in the portion that is in constant contact with the first group of terminals, and the metal spring sheet is a square structure as a whole. The metal spring sheet is flat and not bent, and when in motion, it is only slightly pre-compressed and bent to contact the convex point on the base. Even if it is in motion for a long time and at a high frequency, it will not deform. The square structure of the metal spring sheet can ensure stability and will not tilt too much to cause premature electrical contact. When not in motion, even if one side is tilted, the other side will not be in contact, and the circuit will not be turned on prematurely.

[0028] In this embodiment, the base 1 is provided with a first groove 12 for the metal spring 6 to be embedded, and the two terminal pins of the first group of terminals 4 are extended into the first groove 12. In this embodiment, the base 1 is a cube as a whole, and the first groove 12 is arranged close to the edge of the base 1. The base 1 is provided with a second groove 13 for the insulating transmission member 7 to be embedded and movable, and the pot piece 8 and the insulating transmission member 7 are arranged in the second groove 13. In this embodiment, the second groove 13 is separated from the first groove 12 by a baffle, and the baffle and the base are an integral structure. The baffle is provided with a slot for the elastic connecting part 62 of the metal spring 6 to move, wherein the two terminal pins of the second group of terminals 5 are extended into the second groove 13, the second groove is located in the middle position of the base 1, the first groove is arranged at the periphery of the second groove, and the first groove is arranged in communication with the second groove so that the movable section 61 of the metal spring 6 can pass through and move.

[0029] In this embodiment, the terminal pins are integrally injection-molded on the base 1 , and a portion of the terminal pins extends to the outside of the base 1 for wiring.

[0030] In order to make the switch waterproof and dustproof or more comfortable to press, the button 3 in this embodiment is designed to be made of silicone material. The button 3 made of silicone material is easier to pop out and has good sealing properties. It is tightly matched with the cover plate 2 and the base 1 to achieve the effect of waterproof and dustproof. In addition, the silicone material of the button itself is elastic and can maintain its own supporting state when not affected by external forces, without adding burden to the pot piece, thereby extending the service life, and hardly adding burden to the pot piece when impacted.

[0031] Embodiment 2

[0032] like Figure 6 As shown, the difference between this embodiment and embodiment 1 is that a partition is provided on the base in this embodiment, and a sunken area is provided on the base in this embodiment, and the sunken area is a second groove 13, and the inner wall of the sunken area forms a positioning pot piece.

Claims

1. A multi-circuit touch switch, comprising a base, a cover, a button and terminal pins, wherein the cover partially presses and fixes the button on the base, wherein there are four terminal pins, two of which form a first group of terminals, and the other two form a second group of terminals, wherein: It also includes a metal spring sheet, which is movably arranged in the base and has a compressed state and a reset state. The two terminal pins of the first group of terminals extend to the range of the movable trajectory of the metal spring sheet. When the metal spring sheet is in a compressed state, it abuts against the two terminal pins of the first group of terminals. When the metal spring sheet is in a reset state, the metal spring sheet is separated from the two terminal pins of the first group of terminals. An insulating transmission part is connected to the metal spring sheet, and a pot piece is provided below the insulating transmission part. A part of the pot piece is often in contact with one of the terminal pins of the second group of terminals, and another terminal pin of the second group of terminals partially extends to the bottom of the pot piece, and the two terminal pins of the second group of terminals are connected through the deformation of the pot piece.

2. A multi-circuit touch switch as claimed in claim 1, characterized in that: The base is provided with a first groove for the metal spring to be embedded and move up and down, and both terminal pins of the first group of terminals extend into the first groove.

3. A multi-circuit touch switch as claimed in claim 2, characterized in that: The base is provided with a second groove for the insulating transmission part to be embedded and move, the pot piece and the insulating transmission part are arranged in the second groove, wherein the two terminal feet of the second group of terminals extend into the second groove, the second groove is located in the middle position of the base, and the first groove is arranged on the periphery of the second groove.

4. A multi-circuit touch switch as claimed in claim 3, characterized in that: The pot piece is a circular metal spring piece with a raised center.

5. A multi-circuit touch switch as claimed in claim 1, characterized in that: Silver contacts are arranged at the contact positions between the pot piece, the metal spring sheet and the terminal pin.

6. A multi-circuit touch switch as claimed in claim 1, characterized in that: The terminal pins are integrally injection-molded on the base, and the cover plate is buckled with the base.

7. A multi-circuit touch switch as claimed in claim 1, characterized in that: The button is made of silicone.

8. A multi-circuit touch switch as claimed in claim 1, characterized in that: The portion of the metal spring sheet that is in constant contact with the first group of terminals is a flat plane without any bends, and the metal spring sheet is a square structure as a whole.

9. A multi-circuit touch switch as claimed in claim 3, characterized in that: The second groove is separated from the first groove by a baffle, the baffle and the base are in an integrated structure, and a slot is provided on the baffle for the elastic connecting part of the metal spring to move.

10. A multi-circuit touch switch as claimed in claim 3, characterized in that: A sunken area is arranged on the base, the sunken area is a second groove, and the inner wall of the sunken area forms a positioning pot piece.

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