TWM584976U - Thin photoelectric mechanical keyboard switch - Google Patents

Abstract

The invention relates to a thin photoelectric mechanical keyboard switch, which includes a PCB board, a base and a keycap. The base is provided with a first receiving slot, a second receiving slot and a surrounding slot, and a balancing frame is arranged in the surrounding slot. A torsion spring is provided in the first receiving groove, an upper through hole is opened at the bottom of the second receiving groove, and a blocking piece, a hanging piece, a tension spring and a guide core are provided in the second receiving groove. One end of the spring is clamped in the guide core and connected to the hanging piece, and the other end is connected to the balance frame. The lower end of the guide core has an insertion portion, which is composed of two insertion plates disposed opposite to each other. A lower opening is formed between the tension springs, and the two insertion boards are respectively provided with through holes; the PCB board is provided with a lower through hole corresponding to the upper through hole. A light emitting tube and a light receiving tube are oppositely disposed at the edge of the lower through hole, and the guide core slides up and down in the direction of the upper through hole and the lower through hole. The novel type realizes the thinning and the pressing balance and stability while realizing the on and off functions by using light.

Description

Thin photoelectric mechanical keyboard switch

The present invention relates to a keyboard switch, in particular to a thin photoelectric mechanical keyboard switch.

The photoelectric switch is the abbreviation of photoelectric proximity switch. It is a device that changes the light receiving state of the photoelectric sensor by using the object to block or reflect the light beam, thereby turning on or off the circuit. Photoelectric switches were mainly used in the fields of object detection, counting, light intensity sensing and color recognition. With the development of optoelectronic technology and the reduction of related device costs, photoelectric switches have also replaced ordinary contact switches in some areas, such as using photoelectric keyboard switches instead of contact keyboard switches.

Compared with closing the ordinary contact keyboard, the photoelectric keyboard switch has the advantages of fast response speed and long service life, but the existing photoelectric keyboard switch also has the following problems:

1. Large thickness makes it difficult to achieve thin product development.

2. In the process of use, the balance is poor and the stability is poor, which causes the use to be smooth and affects the normal use.

In view of the above-mentioned shortcomings, the object of the present invention is to provide a thin electro-optical mechanical keyboard switch, which realizes the thinning of the product while using the light to realize the on and off function, and at the same time, improves the pressing balance and stability.

The technical solution adopted by the new model to achieve the above-mentioned object is: a thin optoelectronic mechanical keyboard switch comprising a PCB board, a base provided on the PCB board, and a keycap provided on the base; on the base; A first accommodating slot, a second accommodating slot, and a surrounding slot opened around the upper edge of the base are provided, wherein, A balance frame is provided in the surrounding groove, a torsion spring is provided in the first receiving groove, an upper through hole is provided at the bottom of the second receiving groove, and a blocking piece, a hanging piece, A guide core of a tension spring boat, one end of the tension spring is clamped in the guide core and connected to the hanging piece, and the other end is connected to the balance frame; the lower end of the guide core has an insertion portion, and the insertion portion is formed by two oppositely disposed pieces The inserting board is composed of a lower opening formed between the two inserting boards for the tension spring to snap in, and the two inserting boards are respectively provided with a through hole; the PCB board is provided with a corresponding hole. A lower through hole is provided with a light emitting tube and a light receiving tube opposite to the edge of the lower through hole on the PCB board, and the guide core slides up and down in the direction of the upper through hole and the lower through hole.

As a further improvement of the present invention, the guide core has a guide core base, the guide core base is connected to the upper end of the insertion part, a limiting block is disposed on the side of the guide core base, and the second receiving groove The side is provided with a limiting slot for the limiting block to be snapped into.

As a further improvement of the present invention, a cover is further provided between the base and the keycap, and an opening is formed on the cover for the guide core to pass through.

As a further improvement of the present invention, the tension spring has a first tension hook at one end and a second tension hook at the other end. The first tension hook is hooked on the hanging piece, and the second tension hook is hooked on the balance frame. .

As a further improvement of the present invention, the hanging piece has a hanging piece opening, and a card slot is formed on the back of the hanging piece opening, which is U-shaped as a whole, the tension spring is located in the hanging piece opening, and the first of the tension spring is The hook is clamped on the card position.

As a further improvement of the present invention, the baffle has a baffle opening, which is U-shaped as a whole, and the baffle opening is arranged upward, so that the second hook of the tension spring is located above the baffle opening.

As a further improvement of the present invention, the balance frame is an X-shaped frame, which includes a U-shaped left bracket and a U-shaped right bracket, and the open end of the U-shaped left bracket is intersected with the open end of the U-shaped right bracket, and the Front fixed feet of U-shaped left bracket The front fixed feet of the U-shaped right bracket are respectively fixed in the surrounding groove, the rear fixed legs of the U-shaped left bracket and the rear fixed legs of the U-shaped right bracket are respectively fixedly connected to the lower end of the keycap.

As a further improvement of the present invention, a fixing piece is further provided on the base.

As a further improvement of the present invention, a third accommodating groove is further provided on the base, and a static piece is disposed in the third accommodating groove.

As a further improvement of the present invention, the PCB board is provided with a fixed sheet jack for inserting the lower end of the fixed sheet and a static sheet jack for inserting the lower end of the fixed sheet.

The beneficial effects of the new model are: 1. The combination of the X-shaped balance frame and the tension spring further enhances the balance of the keyboard switch, which is more stable and smooth to use than the traditional structure design using a single balance bar; 2 By using the guide core to control the torsion spring to hit the base to make sound, the sound is emitted and the feel is increased; 3, through the setting of the light emitting tube and the light receiving tube on the PCB board, combined with the lower end of the guide core The arrangement of the via hole makes a light conducting channel formed between the light emitting tube, the via hole and the light receiving tube to realize the conduction function of the keyboard switch; and as the guide core moves, when the guide core and light emission When a light conducting channel cannot be formed between the tube and the light receiving tube, the disconnection function of the keyboard switch is realized.

The above is an overview of the technical solution of the present invention. The following further describes the present invention with reference to the drawings and specific embodiments.

1‧‧‧PCB board

2‧‧‧ base

3‧‧‧ keycap

20‧‧‧Fix

21‧‧‧ the first receiving slot

22‧‧‧Second accommodation slot

222‧‧‧ limit slot

23‧‧‧Enclosure

24‧‧‧Third accommodation slot

30‧‧‧ Still

4‧‧‧Balance

41‧‧‧U-shaped left bracket

42‧‧‧U-shaped right bracket

5‧‧‧torsion spring

6‧‧‧baffle

61‧‧‧baffle opening

7‧‧‧ hanging film

71‧‧‧ hanging film opening

72‧‧‧Card

8‧‧‧ extension spring

81‧‧‧The first pull hook

82‧‧‧Second pull hook

9‧‧‧ guide core

91‧‧‧ Insertion

911‧‧‧Insertion board

912‧‧‧via

92‧‧‧ Guide core base

93‧‧‧ limit block

94‧‧‧ lower opening

10‧‧‧ Cover

101‧‧‧ opening

11‧‧‧ lower through hole

12‧‧‧light emitting tube

13‧‧‧light receiving tube

14‧‧‧Fixed socket

15‧‧‧ Still film jack

Figure 1 is an exploded view of the new model.

Figure 2 is a schematic diagram of the structure of the novel base.

FIG. 3 is a schematic structural diagram of a new type guide core.

Figure 4 is a schematic diagram of the structure of the new hanging piece.

FIG. 5 is a schematic structural diagram of a new type of baffle.

Figure 6 is a schematic diagram of a part of the novel structure.

FIG. 7 is a schematic structural diagram of the novel keyboard switch in an unpressed state.

FIG. 8 is a sectional view of the keyboard switch in an unpressed state.

FIG. 9 is a schematic structural diagram of a new type of keyboard switch in a pressed-to-terminated state.

In order to further explain the technical means and effects adopted by the new model to achieve the predetermined purpose, the specific implementation of the new model will be described in detail below with reference to the drawings and preferred embodiments.

Please refer to FIG. 1 to FIG. 6, the embodiment of the present invention provides a thin photoelectric mechanical keyboard switch, which includes a PCB board 1, a base 2 disposed on the PCB board 1, and a base 2 disposed on the PCB 2. The keycap 3 of the base 2 is provided with a first receiving groove 21, a second receiving groove 22, and a surrounding groove 23 formed around the upper edge of the base 2, wherein the surrounding groove 23 is provided therein. The balance frame 4 is provided with a torsion spring 5 in the first receiving groove 21, an upper through hole is provided at the bottom of the second receiving groove 22, and a blocking plate 6 and a hanging plate 7 are provided in the second receiving groove 22. Tension spring 8 and guide core 9, one end of which is clamped in the guide core 9 and connected to the hanging piece 7, and the other end is connected to the balance frame 4; the lower end of the guide core 9 has an insertion portion 91, The inserting portion 91 is composed of two inserting plates 911 opposite to each other. A lower opening 94 is formed between the two inserting plates 911 for the tension spring 8 to engage. Each of the two inserting plates 911 is provided with a through hole 912. ; The PCB board 1 is provided with a lower through hole 11 corresponding to the upper through hole, and a light emitting tube 12 and a light receiver are provided on the PCB board 1 and located at the edge of the lower through hole 11 The tube 13 and the guide core 9 slide up and down in the direction of the upper through hole and the lower through hole 11.

As shown in FIG. 3, the guide core 9 has a guide core base 92, which is connected to the upper end of the insertion portion 91, and the guide core base 92 is on the side A limiting block 93 is provided; a limiting slot 222 is formed on the side of the second receiving slot 22 for the limiting block 93 to be snapped into. When pressing the guide core 9 to swing downward, the limit block 93 is locked into the limit groove 222 to prevent the guide core 9 from being excessively detached from the base 2 and ensure that the guide core 9 is up and down within a certain vertical range. mobile.

As shown in FIG. 1, a cover 10 is further provided between the base 2 and the keycap 3. The cover 10 is used for positioning the torsion spring 5 and the tension spring 8 and other structures to prevent the pressing process. In this case, the torsion spring 5 and the tension spring 8 are separated from the base 2. An opening 101 is formed at the upper end of the cover 10 for the guide core 9 to pass out. During the pressing process, the guide core 9 moves up and down in the opening 101. In this embodiment, the cover 10 is a plastic cover to better insulate the conductive members. At the same time, a fixing piece 20 is also provided on the base 2.

As shown in Figs. 1 and 6, the tension spring 8 has a first pull hook 81 at one end and a second pull hook 82 at the other end. The first pull hook 81 is hooked on the hanging piece 7, and the second pull The hook 82 is hooked on the balance frame 4. By clamping one end of the tension spring 8 on the hanging piece 7 in the guide core 9, the tension spring 8 has an upward restoring force on the guide core 9, so that the keyboard switch in the pressed state is restored to the natural state upward. .

As shown in FIG. 4, the hanging piece 7 has a hanging piece opening 71. A clip 72 is formed on the back of the hanging piece opening 71 and has a U-shape as a whole. The tension spring 8 is located in the hanging piece opening 71. The first hook 81 of the tension spring 8 is clamped on the clamping position 72.

As shown in FIG. 5, the baffle plate 6 has a baffle plate opening 61 which is U-shaped as a whole, and the baffle plate opening 61 is arranged upward so that the second hook 82 of the tension spring 8 is located at the baffle plate opening Above 61.

As shown in FIG. 1, the balance frame 4 is an X-shaped frame, which includes a U-shaped left bracket 41 and a U-shaped right bracket 42. The open end of the U-shaped left bracket 41 and the open end of the U-shaped right bracket 42. Crosswise, and the front fixed leg of the U-shaped left bracket 41 and the front fixed leg of the U-shaped right bracket 42 are respectively fixed to the In the surrounding groove 23, the rear fixed leg of the U-shaped left bracket 41 and the rear fixed leg of the U-shaped right bracket 42 are respectively connected to the lower end of the keycap 3.

As shown in FIG. 2, the base 2 is further provided with a third receiving groove 24. A static piece 30 is disposed in the third receiving groove 24.

As shown in FIG. 1, the PCB board 1 is provided with a fixing piece insertion hole 14 for inserting a lower end of the fixing piece 20 and a static piece insertion hole 15 for inserting a lower end of the fixing piece 30.

As shown in FIGS. 7 and 8, it is a schematic diagram of the structure of the keyboard switch not being pressed. When the keycap 3 is pressed, the keycap 3 pushes the guide core 9 and the balance frame 4 to swing downward. The guide core The downward swing of 9 will drive the torsion spring 5 to move. At the same time, the two through holes 912 of the inserting plate 911 of the guide core 9 are located between the light emitting tube 12 and the light receiving tube 13 to form a light conducting channel. The light emitted by the light-emitting tube 12 can be transmitted to the light-receiving tube 13 through the two through-holes 912 to realize the conduction function of the keyboard switch, as shown in FIG. When the pressing force on the keycap 3 disappears, due to the restoring force of the tension spring 8, an upward force is applied to the guide core 9, and the guide core 9 moves upward, so that the guide core 9, the light emitting tube 12 and A light conduction channel cannot be formed between the light receiving tubes 13, and the keyboard switch in the pressed state is restored to a natural state at the same time, at the same time, the restoring force of the torsion spring 5 hits the base 2 to emit a sound and improves the pressing Feel, to realize the disconnect function of the keyboard switch.

The main points of the new model are: 1. The combination of the X-shaped balance frame and the tension spring further enhances the balance of the keyboard switch, which is more stable and smooth to use than the traditional structure design using a single balance bar; 2 By using the guide core to control the torsion spring to hit the base to make sound, the sound is emitted and the feel is increased; 3, through the setting of the light emitting tube and the light receiving tube on the PCB board, combined with the lower end of the guide core The arrangement of the vias makes the light emitting tube, the vias and the A light conduction channel is formed between the light receiving tubes to realize the conduction function of the keyboard switch; and with the movement of the guide core, when a light conduction channel cannot be formed between the guide core, the light emitting tube and the light receiving tube, The disconnection function of the keyboard switch is realized.

The above are only the preferred embodiments of the present invention, and do not place any limitation on the technical scope of the present invention. Therefore, the same or similar technical features as those of the above embodiments of the present invention are adopted, and other structures obtained are all in the present invention. Within the scope of protection.

Claims (10)

A thin photoelectric mechanical keyboard switch includes a PCB board, a base provided on the PCB board, and a keycap provided on the base. The base is provided with a first receiving slot and a second receiving slot. And a surrounding groove provided around the upper edge of the base, wherein a balance frame is provided in the surrounding groove, a torsion spring is provided in the first receiving groove, and an upper through hole is provided at the bottom of the second receiving groove, and the The second accommodating slot is provided with a blocking piece, a hanging piece, and a tension spring boat guide core. One end of the tension spring is caught in the guide core and connected to the hanging piece, and the other end is connected to the balance frame. The lower end is provided with an inserting portion, which is composed of two inserting plates opposite to each other, a lower opening is formed between the two inserting plates for the extension spring to snap in, and a conducting hole is respectively opened on the two inserting plates; A lower through-hole corresponding to the upper through-hole is opened on the PCB, and a light-emitting tube and a light-receiving tube are disposed on the PCB and located opposite the edge of the lower through-hole, and the guide core extends along the upper through-hole. Slide up and down in the direction of the lower through hole. The thin optoelectronic mechanical keyboard switch according to claim 1, the guide core has a guide core base, the guide core base is connected to the upper end of the insertion part, and a limit block is arranged on the side of the guide core base, A limiting groove is formed on the side of the second receiving groove for the limiting block to be inserted into. According to the thin electromechanical keyboard switch of claim 1, a cover is further provided between the base and the keycap, and the cover is provided with an opening for the guide core to pass through. The thin optoelectronic mechanical keyboard switch according to claim 1, wherein the tension spring has a first pull hook at one end and a second pull hook at the other end, the first pull hook is hooked on the hanging piece, and the second pull hook Hooked on the balance frame. The thin optoelectronic mechanical keyboard switch according to claim 4, the hanging piece has a hanging piece opening, and a card slot is formed on the back of the hanging piece opening, and the whole is U-shaped, so The tension spring is located in the opening of the hanging piece, and the first hook of the tension spring is clamped on the clamping position. According to the thin optoelectronic mechanical keyboard switch described in claim 4, the baffle has a baffle opening, which is U-shaped as a whole, and the baffle opening is arranged upward, so that the second hook of the tension spring is located on the baffle. Piece above the opening. The thin electro-optical mechanical keyboard switch according to claim 1, the balance frame is an X-shaped frame, which includes a U-shaped left bracket and a U-shaped right bracket, and the open end of the U-shaped left bracket and the U-shaped right bracket The open ends are intersected, and the front fixed feet of the U-shaped left bracket and the front fixed feet of the U-shaped right bracket are respectively fixed in the surrounding groove. The rear fixed legs of the U-shaped left bracket and the U-shaped right bracket are The rear fixed feet are respectively fixedly connected to the lower end of the keycap. According to the thin electromechanical keyboard switch of claim 1, the base is further provided with a fixing piece. According to the thin-type electromechanical keyboard switch according to claim 8, a third receiving slot is further provided on the base, and a static piece is disposed in the third receiving slot. According to the thin-type electromechanical keyboard switch of claim 1, the PCB board is provided with a fixed sheet jack for inserting the lower end of the fixed sheet and a static sheet jack for inserting the lower end of the static sheet.