Touch switchTechnical Field
The present invention relates to a touch switch.
Background
The touch switch is generally applied to products such as a desk lamp, a floor lamp, a stair lamp and the like, and people can conveniently turn on or off the lamp by touching the switch by hands. The metal sheet on the current touch switch is directly contacted with the induction PCB, so that the touch switch is used for a period of time, the induction PCB is likely to have displacement deviation, the sensitivity of the touch switch is reduced, and the situation that the electric lamp still cannot be started by the touch switch for a plurality of times is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the touch switch which is reasonable in structure and ensures the unchanged sensitivity.
In order to solve the technical problems, the invention adopts the following technical scheme:
A touch switch comprises a hollow convex-shaped surface ring, an induction touch element arranged in a hollow hole of the surface ring and an induction signal processing PCB board; the induction touch element comprises an induction element mounting seat with a groove, an induction metal sheet hermetically covered in the top of the groove of the induction element mounting seat, and an induction PCB with a pressure spring, wherein the induction PCB is arranged in the bottom of the groove of the induction element mounting seat; the pressure spring on the induction PCB board is contacted with the induction metal sheet after the induction PCB board is arranged at the bottom of the groove; the induction PCB is connected with the induction signal processing PCB through a wire penetrating from the bottom of the groove.
In the improvement scheme of the touch switch, an installation table protruding inwards is arranged on the inner wall of the top of the groove of the induction element installation seat, the induction metal sheet is installed on the installation table, and the outer surface of the induction metal sheet is level with the top surface of the induction element installation seat; the pressure spring on the induction PCB board is higher than the top surface of the mounting table after the induction PCB board is mounted at the bottom of the groove.
In the improvement scheme of the touch switch, a through hole for a wire to penetrate into is formed in the bottom surface of the groove and connected with the induction PCB.
In an improvement of the touch switch, a supporting edge for supporting the induction element mounting seat is arranged at the bottom in the hollow hole of the face ring.
Compared with the prior art, the invention has the beneficial effects that: because its response sheetmetal and response PCB board are installed respectively at the recess top and the bottom of sensing element mount pad, and the pressure spring and the contact of sensing sheetmetal on the response PCB board are passed through to the installation back, and make the inside of sensing element mount pad form a sealed space to make touch switch more sensitive, therefore its is rational in infrastructure, and the sensitivity is high.
The invention is described in further detail below with reference to the attached drawings and detailed description:
Drawings
FIG. 1is a schematic illustration of the installation of the present invention;
FIG. 2 is a second installation schematic of the present invention;
fig. 3 is a partial installation schematic of the present invention.
Detailed Description
A touch switch, as shown in figures 1,2 and 3, comprises a hollow convex-shaped surface ring 1, an induction touch element 2 arranged in a hollow hole 11 of the surface ring 1 and an induction signal processing PCB 3; the sensing touch element 2 comprises a sensing element mounting seat 21 with a groove 211, a sensing metal sheet 22 hermetically covered on the top of the groove 211 of the sensing element mounting seat 21, and a sensing PCB 23 with a pressure spring 231 arranged in the bottom of the groove 211 of the sensing element mounting seat 21; the pressure spring 231 on the induction PCB 23 is contacted with the induction metal sheet 22 after the induction PCB 23 is installed at the bottom of the groove 211; the sensing PCB 23 is connected to the sensing signal processing PCB 3 through a wire 4 penetrating from the bottom of the groove 211. In the installation process, the other end of the lead wire 4 with one end connected with the induction signal processing PCB 3 firstly passes through the hollow hole 11 of the face ring 1, then penetrates into the groove 211 from the bottom of the induction element installation seat 21 to be connected with the induction PCB 23, then installs and fixes the induction PCB 23 to the bottom of the groove, then installs and fixes the induction metal sheet 22 to the top of the groove 211 so that the bottom surface of the induction metal sheet contacts with the pressure spring 231 on the induction PCB 23, and forms a sealed space inside the induction element installation seat 21, and finally installs the induction element installation seat 21 into the hollow hole 11 of the face ring 1. When the induction type electric lamp is used, a user touches the induction metal sheet 22 by hand, the induction PCB can sense signals, the signals are transmitted to the induction signal processing PCB 3 through the lead 4, and the induction signal processing PCB 3 can control the electric lamp to emit light or make some products emit sound. Because the induction metal sheet 22 and the induction PCB 23 are respectively arranged at the top and the bottom of the groove of the induction element mounting seat 21, the induction PCB 23 contacts with the induction metal sheet 22 through the pressure spring 231 on the induction metal sheet after being arranged, and a sealed space is formed in the induction element mounting seat 21, so that the touch switch is more sensitive, and therefore, the invention has the advantages of reasonable structure and high sensitivity.
In this embodiment, as shown in fig. 2, an inner wall of a top of the recess 211 of the sensing element mounting seat 21 is provided with an inwardly protruding mounting table 212, and the sensing metal sheet 22 is mounted on the mounting table 212 and has an outer surface which is level with a top surface of the sensing element mounting seat 21; the pressure spring 231 on the induction PCB 23 is higher than the top surface of the mounting table 212 after being arranged at the bottom of the groove 211, and when the induction metal sheet 22 is arranged, the mounting table 212 aligned to the top of the groove 211 is pressed in until the outer surface of the induction metal sheet is flat with the top surface of the induction element mounting seat 21; in the process of pressing the sensing metal sheet 22 into the mounting table 212, the bottom surface of the sensing metal sheet 22 is contacted with the pressure spring 231 on the sensing PCB 23, and then the sensing metal sheet 22 is completely mounted on the mounting table 212 by overcoming the elastic force of the pressure spring 232, so that the sensing PCB 23 can be ensured to be always contacted with the sensing metal sheet 22 through the pressure spring 231.
In this embodiment, as shown in fig. 1, the bottom surface of the groove 211 is provided with perforations 213 for the wires 4 to penetrate into and connect with the sensing PCB 23, and the number of the perforations 213 is the same as the number of the wires, so that after the wires 4 pass through the corresponding perforations, the corresponding perforations can be sealed, thereby achieving the waterproof effect. Of course, there may be one perforation, which is shared by a plurality of wires, and all wires pass through.
As shown in fig. 2, a supporting edge 12 for supporting the sensing element mounting seat 21 is disposed at the bottom of the hollow hole 11 of the face ring 1, so that after the sensing PCB 23 and the sensing metal sheet 22 are mounted on the sensing element mounting seat 21, the sensing element mounting seat 21 can be inserted into the hollow hole 11 from the upper end of the face ring and then supported by the supporting edge 12 at the bottom of the hollow hole 11, and finally the sensing element mounting seat 21 is fixed in the hollow hole 11 by coating glue between the outer wall of the sensing element mounting seat 21 and the inner wall of the hollow hole 11 or pasting a film on the surface of the face ring 1 to cover the sensing element mounting seat 21.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims. Accordingly, the detailed description of the disclosed embodiments is to be taken only by way of illustration and not by way of limitation, and the scope of protection is defined by the content of the claims.