CN211507461U - Key device of film control switch - Google Patents

Abstract

The utility model discloses a membrane control switch's button device, including the installation carrier, install down the circuit board on the installation carrier, circuit board upside is equipped with down, go up and be equipped with the piece that resets between circuit board and the lower circuit board, go up respectively fixedly connected with conducting point and contact point on the one side lateral wall that circuit board and lower circuit board are close to each other, go up the last side wall fixedly connected with briquetting of circuit board, the equal sliding connection in both sides of briquetting has the limiting plate, two be equipped with waterproof between limiting plate and the last circuit board, the upper end fixedly connected with shell fragment of briquetting. The utility model has the advantages that the two limiting plates which are connected with the press block in a sliding way are arranged, so that the press block moves along the through hole between the two limiting plates, and the condition of poor contact of the membrane switch is prevented; through setting up the baffle, when inside intaking, water can flow from the drainage groove on baffle surface to play the protection the utility model discloses an effect improves its life.

Description

Key device of film control switch

Technical Field

The utility model relates to a membrane switch technical field especially relates to a membrane control switch's button device.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel. The circuit board consists of four parts, including a panel, an upper circuit, an isolating layer and a lower circuit. The method is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like.

The key cap of membrane switch among the prior art uses the back for a long time, and the briquetting slope can appear pushing down at the in-process that down moved to lead to the contact point to normally contact with the switch-on point, influence membrane switch's normal use, secondly, do not possess the function of drainage in the switch, lead to inside short circuit under the condition of intaking.

To solve the above problems, a key device of a membrane control switch is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a key device of a film control switch.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a membrane control switch's button device, includes the installation carrier, install down the circuit board on the installation carrier, the circuit board upside is equipped with down, go up and be equipped with the piece that resets between circuit board and the lower circuit board, go up respectively fixedly connected with conducting point and contact point on the lateral wall that circuit board and lower circuit board are close to each other, go up the last lateral wall fixedly connected with briquetting of circuit board, the equal sliding connection in both sides of briquetting has the limiting plate, two be equipped with waterproof between limiting plate and the last circuit board, the upper end fixedly connected with shell fragment of briquetting, the equal fixedly connected with riser in the left and right sides of installation carrier, the upside of shell fragment is equipped with the key cap, the right side be equipped with in the riser and carry out.

Preferably, the reset piece comprises two springs, the upper end and the lower end of each spring are fixedly connected with the lower side wall of the upper circuit board and the upper side wall of the lower circuit board respectively, and the two springs are located on the left side and the right side of the contact point respectively.

Preferably, all be equipped with first spout, two on the lateral wall about the briquetting all be equipped with the first slider of assorted in the first spout, two equal fixedly connected with connecting block, two on the lateral wall of one side that the limiting plate is close to each other the connecting block respectively with two first slider fixed connection.

Preferably, the waterproof piece is established two baffles in the briquetting outside including the cover, two the baffle runs through two riser settings about respectively, two all be equipped with first screw hole in the baffle, two be equipped with the cavity in the riser, two all be equipped with on the bottom in the cavity with first screw hole assorted second screw hole, corresponding first screw hole and second screw hole female connection have first bolt, first bolt runs through the side wall setting of going up of cavity.

Preferably, two one side lateral wall upper portion that the riser is close to each other all is equipped with the second spout, two all be equipped with in the second spout with it assorted second slider, two the second slider respectively with the key cap control both ends fixed connection.

Preferably, the locating part includes the second bolt, and the right side the right-hand member of second slider and key cap is equipped with the third screw hole corresponding with it, third screw hole and second bolt threaded connection, the second bolt runs through the right side riser setting.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the two limiting plates in sliding connection with the pressing block are arranged, so that the pressing block moves along the through hole between the two limiting plates, and the condition that the membrane switch is in poor contact is prevented;

2. through setting up the baffle, when inside intaking, water can flow from the drainage groove on baffle surface to play the protection the utility model discloses an effect improves its life.

Drawings

Fig. 1 is a perspective view of a key device of a membrane control switch according to the present invention;

fig. 2 is a sectional view of the structure taken along the line a-a in fig. 1.

In the figure: the mounting structure comprises a mounting carrier 1, a lower circuit board 2, an upper circuit board 3, a reset piece 4, a conduction point 5, a contact point 6, a pressing block 7, a limiting plate 8, a waterproof piece 9, a vertical plate 10, an elastic sheet 11, a keycap 12, a limiting piece 13, a spring 14, a connecting block 15, a baffle 16, a first bolt 17 and a second bolt 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a key device of a membrane control switch includes an installation carrier 1, a lower circuit board 2 is installed on the installation carrier 1, an upper circuit board 3 is disposed on the upper side of the lower circuit board 2, a reset piece 4 is disposed between the upper circuit board 3 and the lower circuit board 2, specifically, the reset piece 4 includes two springs 14, the upper end and the lower end of each spring 14 are respectively fixedly connected with the lower side wall of the upper circuit board 3 and the upper side wall of the lower circuit board 2, the two springs 14 are respectively located on the left side and the right side of a contact point 6, and a conduction point 5 and the contact point 6 are respectively fixedly connected on the side wall of one side of the upper circuit board 3 close.

In the utility model, the upper side wall of the upper circuit board 3 is fixedly connected with a press block 7, both sides of the press block 7 are slidably connected with limit plates 8, it should be noted that the left and right side walls of the press block 7 are both provided with first chutes, both the first chutes are provided with matched first slide blocks, both the side walls of the two limit plates 8 close to each other are fixedly connected with connecting blocks 15, the two connecting blocks 15 are respectively fixedly connected with the two first slide blocks, a waterproof part 9 is arranged between the two limit plates 8 and the upper circuit board 3, it is worth mentioning that the waterproof part 9 comprises two baffle plates 16 sleeved outside the press block 7, the upper side walls of the two baffle plates 16 are provided with drainage grooves, the two baffle plates 16 are respectively arranged by penetrating through the left and right riser plates 10, both the baffle plates 16 are provided with first threaded holes, two riser plates 10 are provided with cavities, and both the bottoms of the two cavities are provided with second threaded holes matched, the corresponding first threaded hole and the second threaded hole are connected with a first bolt 17 in a threaded mode, and the first bolt 17 penetrates through the upper side wall of the cavity.

In the utility model, the upper end of the pressing block 7 is fixedly connected with the spring plate 11, the left and right sides of the installation carrier 1 are both fixedly connected with the vertical plates 10, the upper side of the spring plate 11 is provided with the key cap 12, it is noted that the upper parts of the side walls of the two vertical plates 10 close to each other are both provided with the second chutes, the two second chutes are both provided with the second slide blocks matched with the second chutes, the two second slide blocks are respectively fixedly connected with the left and right ends of the key cap 12, the upper parts of the side walls of the two vertical plates 10 close to each other are both provided with the second chutes, the two second slide blocks are both provided with the second slide blocks matched with the second chutes, the two second slide blocks are respectively fixedly connected with the left and right ends of the key cap 12 and are provided with the position-limiting parts 13 for limiting the key cap 12, it is noted that the position-limiting parts 13 comprise the second bolts 18, the third threaded hole is in threaded connection with a second bolt 18, and the second bolt 18 penetrates through the right vertical plate 10.

The utility model discloses when using, press key cap 12, key cap 12 moves down, and key cap 12 drives shell fragment 11 and moves down, and shell fragment 11 is pressed and is moved 7 downstream of briquetting, and briquetting 7 is pressed and is moved 3 downstream of last circuit board, goes up the conducting point 5 on the circuit board 3 and contacts with contact point 6 on the lower circuit board 2, trigger switch, cooperation spring 14 can play the effect that resets.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a membrane control switch's button device, includes installation carrier (1), its characterized in that, install down circuit board (2) on installation carrier (1), circuit board (2) upside is equipped with circuit board (3) down, go up circuit board (3) and be equipped with reset piece (4) down between circuit board (2), go up fixedly connected with conducting point (5) and contact point (6) respectively on the lateral wall that circuit board (3) and lower circuit board (2) are close to each other, the last lateral wall fixedly connected with briquetting (7) of last circuit board (3), the equal sliding connection in both sides of briquetting (7) has limiting plate (8), two be equipped with waterproof (9) between limiting plate (8) and last circuit board (3), the upper end fixedly connected with shell fragment (11) of briquetting (7), the equal fixedly connected with riser (10) in the left and right sides of installation carrier (1), the upper side of shell fragment (11) is equipped with key cap (12), and the right side be equipped with in riser (10) and carry out spacing locating part (13) to key cap (12).

2. The key device of the membrane control switch according to claim 1, wherein the reset member (4) comprises two springs (14), the upper and lower ends of the two springs (14) are respectively fixedly connected with the lower side wall of the upper circuit board (3) and the upper side wall of the lower circuit board (2), and the two springs (14) are respectively located at the left and right sides of the contact point (6).

3. The key device of the membrane control switch according to claim 1, wherein the press block (7) is provided with first sliding grooves on left and right side walls, two first sliding grooves are provided with first sliding blocks matched with the first sliding grooves, two limiting plates (8) are fixedly connected with connecting blocks (15) on one side wall close to each other, and the two connecting blocks (15) are fixedly connected with the two first sliding blocks respectively.

4. The key device of the film control switch according to claim 1, wherein the waterproof member (9) comprises two baffle plates (16) sleeved outside the press block (7), the two baffle plates (16) are respectively arranged by penetrating through a left vertical plate (10) and a right vertical plate (10), a first threaded hole is formed in each baffle plate (16), a cavity is formed in each vertical plate (10), a second threaded hole matched with the first threaded hole is formed in the bottom of each cavity, a first bolt (17) is connected with the first threaded hole in an internal thread mode correspondingly, and the first bolt (17) penetrates through the upper side wall of each cavity.

5. The key device of the membrane control switch according to claim 1, wherein the upper portion of one side wall of each of the two vertical plates (10) adjacent to each other is provided with a second sliding groove, the two second sliding grooves are provided with second sliding blocks matched with the second sliding grooves, and the two second sliding blocks are respectively fixedly connected with the left end and the right end of the keycap (12).

6. The key device of the membrane control switch according to claim 5, wherein the stopper (13) comprises a second bolt (18), a right end of the second slider and the right end of the key cap (12) are provided with a third threaded hole corresponding to the second bolt, the third threaded hole is in threaded connection with the second bolt (18), and the second bolt (18) penetrates through the right riser (10).

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