CN213660256U

CN213660256U - Long service life's membrane switch

Info

Publication number: CN213660256U
Application number: CN202022968073.3U
Authority: CN
Inventors: 蔡勇; ***
Original assignee: Shanghai Xinlei Electronic Technology Co ltd
Current assignee: Shanghai Xinlei Electronic Technology Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-07-09
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a long service life's membrane switch, including skin, contact device and resetting means, the membrane board has been seted up to outer inside, and outer bottom bonds and has gone up the circuit board to go up the inside of circuit board and seted up first mounting groove, the bottom of going up the circuit board bonds and has the isolation layer, and the inside of isolation layer has seted up the second mounting groove, and the bottom of isolation layer bonds and has lower circuit board, the internally mounted of first mounting groove has the returning face plate. This long service life's membrane switch passes through the contact device, when pressing the returning face plate downwards, makes the fixed block that the returning face plate took in the movable contact device extrude reset spring, and the fixed block drives first leading electrical pillar and the laminating of leading electrical pillar of second simultaneously, makes membrane switch's circuit open, then loosens membrane switch, makes reset spring promote fixed block and returning face plate rebound, and the switch of complete circuit can prevent through the contact device that the contact from using for a long time and producing laxly.

Description

Long service life's membrane switch

Technical Field

The utility model relates to a membrane switch technical field specifically is a long service life's membrane switch.

Background

The membrane switch is an operation system integrating the functions of keys, an indicating element and an instrument panel, mainly comprises a panel, an upper circuit board, an isolating layer and a lower circuit board, and is mainly used in the fields of electronic communication, electronic measurement instruments, industrial control, medical equipment, automobile industry, household appliances and the like because the membrane switch has a strict structure, attractive appearance and good sealing property.

The traditional membrane switch is easy to cause the contact to be loose in the process of long-time use, so that the membrane switch cannot be reset, meanwhile, the service life of the membrane is short, and the subsequent replacement is troublesome, therefore, the technical personnel in the field provide the membrane switch with long service life to solve the problems in the background technology.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a long service life's membrane switch to solve the membrane switch's that proposes among the above-mentioned background art contact easily lax and follow-up more smooth comparatively trouble problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a long service life's membrane switch, includes skin, contact device and resetting means, the membrane board has been seted up to outer inside, and outer bottom bonding has last circuit board to first mounting groove has been seted up to the inside of going up the circuit board, the bottom bonding of going up the circuit board has the isolation layer, and the inside of isolation layer has seted up the second mounting groove, and the bottom bonding of isolation layer has lower circuit board, the internally mounted of first mounting groove has the returning face plate, the contact device is installed in the inner wall of first mounting groove, the internally mounted of isolation layer has the second to lead electrical pillar, resetting means installs in the bottom of returning face plate.

Preferably, the diameter of the first mounting groove is equal to the diameter of the second mounting groove, and the vertical center line of the second mounting groove and the vertical center line of the first mounting groove are located on the same longitudinal section.

Preferably, the contact device includes standing groove, reset spring, fixed block and first leading electrical pillar, and the standing groove is seted up in the inside of first mounting groove, the internally mounted of standing groove has reset spring, and reset spring's top installs the fixed block to first leading electrical pillar is installed to the bottom of fixed block.

Preferably, the placing groove and the first conductive column form a lifting structure through a return spring, and the return spring is symmetrically distributed on two sides of the vertical center line of the turnover plate.

Preferably, the resetting device comprises a sliding groove, a connecting rod, a sliding block and a telescopic spring, the sliding groove is arranged in the turnover plate, the sliding block is arranged in the sliding groove, the connecting rod is arranged on the outer wall of the sliding block, and the telescopic spring is arranged on the outer wall of the connecting rod.

Preferably, the connecting rod and the turnover plate form a sliding structure through a sliding block and a sliding groove, and the cross sections of the sliding block and the sliding groove are convex.

Preferably, the connecting rods are symmetrically distributed on two sides of the vertical center line of the first mounting groove, and every two connecting rods are arranged in a crossed manner.

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

1. the membrane switch with long service life is characterized in that when the turnover plate is pressed downwards, the turnover plate is provided with a fixed block in the movable contact device to extrude a return spring, and meanwhile, the fixed block drives the first conductive column to be attached to the second conductive column, so that a circuit of the membrane switch is opened;

2. this long service life's membrane switch passes through resetting means, and resetting means can assist the lift of returning face plate, and the returning face plate is at the in-process of downstream, and the connecting rod drives the slider and slides in the spout, stretches expanding spring between the connecting rod, and when the returning face plate rebound, expanding spring stretches between to two connecting rods to through the lift of resetting means assistance returning face plate, improve the life of returning face plate.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a membrane switch of the present invention;

FIG. 2 is a schematic view of the front cross-section structure of the membrane switch of the present invention;

FIG. 3 is a schematic view of the membrane switch of the present invention;

fig. 4 is a schematic view of a part of an enlarged structure at a in fig. 2 according to the present invention.

In the figure: 1. an outer layer; 2. a film plate; 3. an upper circuit board; 4. a first mounting groove; 5. an isolation layer; 6. a second mounting groove; 7. a lower circuit board; 8. a turnover plate; 9. a contact arrangement; 901. a placement groove; 902. a return spring; 903. a fixed block; 904. a first conductive post; 10. a second conductive post; 11. a resetting device; 1101. a chute; 1102. a connecting rod; 1103. a slider; 1104. a telescoping spring.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a membrane switch with long service life comprises an outer layer 1, a membrane plate 2, an upper circuit board 3, a first installation groove 4, an isolation layer 5, a second installation groove 6, a lower circuit board 7, a turnover plate 8, a contact device 9, a placing groove 901, a reset spring 902, a fixing block 903, a first conductive column 904, a second conductive column 10, a reset device 11, a sliding groove 1101, a connecting rod 1102, a sliding block 1103 and a telescopic spring 1104, wherein the membrane plate 2 is arranged inside the outer layer 1, the upper circuit board 3 is bonded at the bottom of the outer layer 1, the first installation groove 4 is arranged inside the upper circuit board 3, the isolation layer 5 is bonded at the bottom of the upper circuit board 3, the second installation groove 6 is arranged inside the isolation layer 5, the lower circuit board 7 is bonded at the bottom of the isolation layer 5, the turnover plate 8 is arranged inside the first installation groove 4, the contact device 9 is installed on the inner wall of, a second conductive column 10 is arranged in the isolation layer 5, and a resetting device 11 is arranged at the bottom of the turnover plate 8;

the diameter of the first mounting groove 4 is equal to that of the second mounting groove 6, the vertical center line of the second mounting groove 6 and the vertical center line of the first mounting groove 4 are located on the same longitudinal section, the contact device 9 and the reset device 11 are mounted inside the first mounting groove 4 and the second mounting groove 6, and the first conductive column 904 can be prevented from directly contacting the lower circuit board 7 through the isolation layer 5;

the contact device 9 comprises a placing groove 901, a return spring 902, a fixing block 903 and a first conductive column 904, the placing groove 901 is arranged in the first mounting groove 4, the return spring 902 is arranged in the placing groove 901, the fixing block 903 is arranged at the top of the return spring 902, the first conductive column 904 is arranged at the bottom of the fixing block 903, the placing groove 901 and the first conductive column 904 form a lifting structure through the return spring 902, the return spring 902 is symmetrically distributed on two sides of the vertical center line of the turnover plate 8, when the turnover plate 8 is pressed downwards, the turnover plate 8 drives the fixing block 903 in the contact device 9 to extrude the return spring 902, meanwhile, the fixing block 903 drives the first conductive column 904 to be attached to the second conductive column 10, the circuit of the membrane switch is opened, then the membrane switch is released, the return spring 902 pushes the fixing block 903 and the turnover plate 8 to move upwards, and the circuit is switched on and off, the contact device 9 can prevent the contact from loosening caused by long-time use;

the reset device 11 comprises a sliding groove 1101, connecting rods 1102, a sliding block 1103 and a telescopic spring 1104, the sliding groove 1101 is arranged inside the turnover plate 8, the sliding block 1103 is arranged inside the sliding groove 1101, the connecting rod 1102 is arranged on the outer wall of the sliding block 1103, the telescopic spring 1104 is arranged on the outer wall of the connecting rod 1102, the connecting rod 1102 forms a sliding structure with the turnover plate 8 through the sliding block 1103 and the sliding groove 1101, the cross sections of the sliding block 1103 and the sliding groove 1101 are convex, the connecting rods 1102 are symmetrically distributed on two sides of the vertical center line of the first installation groove 4, the connecting rods 1102 are arranged in a crossed mode between every two connecting rods 1102, the reset device 11 can assist the lifting and descending of the turnover plate 8, the connecting rods 1102 drive the sliding block 1103 to slide in the sliding groove 1101 in the downward moving process of the turnover plate 8, the telescopic spring 1104 is stretched between the connecting rods 1102, and when the, therefore, the reset device 11 is used for assisting the turnover plate 8 to lift, and the service life of the turnover plate 8 is prolonged.

The working principle is as follows: the thin film switch with long service life is used in the process that firstly, when the thin film switch is required to be pressed down to start a cabinet of equipment, the thin film plate 2 is pressed down to enable the thin film plate 2 to drive the turnover plate 8 to move downwards, when the turnover plate 8 is pressed down, the turnover plate 8 drives the fixing block 903 in the contact device 9 to extrude the reset spring 902, meanwhile, the fixing block 903 drives the first conductive column 904 to be attached to the second conductive column 10 to enable a circuit of the thin film switch to be opened, then the thin film switch is loosened, the reset spring 902 pushes the fixing block 903 and the turnover plate 8 to move upwards, the switch of a complete circuit can be prevented from loosening due to long-time use of a contact through the contact device 9;

next, the reset device 11 can assist the lifting of the turnover plate 8, the turnover plate 8 is in the process of moving downwards, the connecting rod 1102 drives the sliding block 1103 to slide in the sliding groove 1101, the telescopic spring 1104 is stretched between the connecting rods 1102, and when the turnover plate 8 moves upwards, the telescopic spring 1104 stretches between the two connecting rods 1102, so that the reset device 11 assists the lifting of the turnover plate 8, and the service life of the turnover plate 8 is prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A membrane switch having a long service life, comprising an outer layer (1), contact means (9) and reset means (11), characterized in that: thin film plate (2) have been seted up to the inside of outer (1), and the bottom bonding of outer (1) has last circuit board (3) to first mounting groove (4) have been seted up to the inside of going up circuit board (3), the bottom bonding of going up circuit board (3) has isolation layer (5), and the inside of isolation layer (5) has seted up second mounting groove (6), and the bottom bonding of isolation layer (5) has lower circuit board (7), the internally mounted of first mounting groove (4) has returning face plate (8), the inner wall in first mounting groove (4) is installed in contact device (9), the internally mounted of isolation layer (5) has the second to lead electrical pillar (10), resetting means (11) are installed in the bottom of returning face plate (8).

2. A membrane switch having a long service life, according to claim 1, wherein: the diameter of the first mounting groove (4) is equal to that of the second mounting groove (6), and the vertical center line of the second mounting groove (6) and the vertical center line of the first mounting groove (4) are located on the same longitudinal section.

3. A membrane switch having a long service life, according to claim 1, wherein: the contact device (9) comprises a placing groove (901), a return spring (902), a fixing block (903) and a first conductive column (904), the placing groove (901) is arranged in the first mounting groove (4), the return spring (902) is arranged in the placing groove (901), the fixing block (903) is arranged at the top of the return spring (902), and the first conductive column (904) is arranged at the bottom of the fixing block (903).

4. A membrane switch having a long service life according to claim 3, wherein: the placing groove (901) and the first conductive column (904) form a lifting structure through a return spring (902), and the return spring (902) is symmetrically distributed on two sides of the vertical center line of the turnover plate (8).

5. A membrane switch having a long service life, according to claim 1, wherein: resetting means (11) include spout (1101), connecting rod (1102), slider (1103) and expanding spring (1104), and spout (1101) is seted up in the inside of returning face plate (8), the internally mounted of spout (1101) has slider (1103), and the outer wall of slider (1103) installs connecting rod (1102), and expanding spring (1104) are installed to the outer wall of connecting rod (1102).

6. A membrane switch having a long service life according to claim 5, wherein: the connecting rod (1102) and the turnover plate (8) form a sliding structure through a sliding block (1103) and a sliding groove (1101), and the cross sections of the sliding block (1103) and the sliding groove (1101) are convex.

7. A membrane switch having a long service life according to claim 5, wherein: the connecting rods (1102) are symmetrically distributed on two sides of the vertical center line of the first mounting groove (4), and every two connecting rods (1102) are arranged in a crossed mode.