CN212411891U

CN212411891U - Composite membrane switch with flexible touch screen

Info

Publication number: CN212411891U
Application number: CN202021016330.7U
Authority: CN
Inventors: 李成云
Original assignee: Nanjing Fum Electronic Technology Co ltd
Current assignee: Nanjing Fum Electronic Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-01-26
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a take compound membrane switch of flexible touch screen, including switch body layer, circuit board and circuit contact, the top on switch body layer is provided with waterproof construction, the both sides on switch body layer all are provided with fixed knot and construct, the bottom on switch body layer is connected with the circuit board, the bottom mounting of circuit board has the circuit contact, the inside on switch body layer all is provided with presses the structure. The utility model discloses an evenly set up flexible shell in the both sides of pressing the shell fragment, press the shell fragment and can stretch out and draw back in flexible shell, when pressing the switch, press the shell fragment shrink and drive to fix and press the last contact downstream of shell fragment bottom, then the telescopic link setting is in the inside in flexible groove, when last contact touches the telescopic link, through the shrink of third expanding spring, cushions last contact, realizes the protection to the switch, increases the life of switch.

Description

Composite membrane switch with flexible touch screen

Technical Field

The utility model relates to a membrane switch technical field specifically is a take compound membrane switch of flexible touch screen.

Background

With the continuous development of the technology, electronic products used in our lives are more and more miniaturized. The membrane switch is widely applied to our lives, and the membrane switch enables the living products to have more epoch characteristics and is deeply loved by broad groups.

The traditional composite membrane switch with the flexible touch screen has the advantages that keys of the membrane switch are not protected conveniently, and the service life of the membrane switch is influenced, so that the composite membrane switch with the flexible touch screen is manufactured, and the problems are solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take compound membrane switch of flexible touch screen to propose inconvenient increase of service life's problem in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a composite membrane switch with a flexible touch screen comprises a switch body layer, a circuit board and a circuit contact, the top end of the switch body layer is provided with a waterproof structure, both sides of the switch body layer are provided with fixing structures, the bottom end of the switch body layer is connected with a circuit board, the bottom end of the circuit board is fixed with a circuit contact, the switch body layer is internally provided with a pressing structure, the pressing structure comprises a pressing elastic sheet, an upper contact, a telescopic shell, a second telescopic spring, a telescopic rod, a telescopic groove, a third telescopic spring and a lower contact, the pressing spring plate is arranged at the top end inside the switch body layer, both sides of the pressing spring plate are provided with telescopic shells, the telescopic shell is internally provided with second telescopic springs, the bottom end of the pressing elastic piece is fixed with an upper contact, and the bottom end of the upper contact is fixed with a lower contact.

Preferably, fixed knot constructs including linking frame, card shell, flexible piece, first expanding spring, fixture block, fixed block and draw-in groove, linking frame all sets up the both ends on switch body layer, linking frame's bottom is installed and is blocked the shell, the both sides on the inside top of card shell are provided with the draw-in groove, the intermediate position department of linking frame's bottom is fixed with the fixed block, first expanding spring is installed to the both sides of fixed block, one side of first expanding spring all is connected with flexible piece, the top of flexible piece all is fixed with the fixture block.

Preferably, the telescopic block is installed inside the clamping shell, and a clamping structure is formed between the clamping shell and the telescopic block.

Preferably, waterproof construction is including sealed thin layer, sealed thin layer and primer layer, the top on switch body layer is connected to the primer layer, the top of primer layer is fixed with sealed thin layer, the top of sealed thin layer is fixed with the silicon oil layer.

Preferably, a third telescopic spring is installed inside the telescopic groove, a telescopic rod is fixed at the top end of the third telescopic spring, and a telescopic structure is formed between the telescopic rod and the telescopic groove.

Preferably, the two sides of the lower contact are both provided with telescopic grooves, and the telescopic grooves are symmetrically distributed around the vertical center line of the lower contact.

Compared with the prior art, the beneficial effects of the utility model are that: the composite membrane switch with the flexible touch screen;

(1) the telescopic shells are uniformly arranged on the two sides of the pressing elastic sheet, the pressing elastic sheet can stretch in the telescopic shells, when the switch is pressed, the pressing elastic sheet contracts and drives the upper contact fixed at the bottom end of the pressing elastic sheet to move downwards, then the telescopic rod is arranged in the telescopic groove, and when the upper contact is in contact with the telescopic rod, the upper contact is buffered through contraction of the third telescopic spring, so that the switch is protected, and the service life of the switch is prolonged;

(2) the telescopic blocks are connected to the two sides of the fixed block, the telescopic blocks can be stretched through the first telescopic springs, then the top ends of the fixed blocks are fixed to the bottom end of the connecting frame, and when the membrane switch needs to be fixed, the telescopic blocks are extruded to be clamped in the clamping shell for fixing, so that the installation mode is more convenient;

(3) through the fixed primer layer in the top on switch body layer, be provided with the colloid on the primer layer and can protect with switch body layer adhesion, then the sealed thin layer of top installation of primer layer, sealed thin layer can seal the switch is inside, the top of sealed thin layer is fixed with the silicon oil reservoir, and the silicon oil reservoir can prevent drop of water or dust absorption on the surface.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of the fixing structure of the present invention;

FIG. 3 is a schematic view of the waterproof structure according to the present invention;

fig. 4 is a schematic view of the local enlarged structure of the pressing structure of the present invention.

In the figure: 1. a fixed structure; 101. a connecting frame; 102. clamping a shell; 103. a telescopic block; 104. a first extension spring; 105. a clamping block; 106. a fixed block; 107. a card slot; 2. a waterproof structure; 201. a silicon oil layer; 202. sealing the film layer; 203. a primer layer; 3. a pressing structure; 301. pressing the elastic sheet; 302. an upper contact; 303. a telescopic housing; 304. a second extension spring; 305. a telescopic rod; 306. a telescopic groove; 307. a third extension spring; 308. a lower contact; 4. a switch body layer; 5. a circuit board; 6. and a circuit contact.

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 an embodiment: a composite membrane switch with a flexible touch screen comprises a switch body layer 4, a circuit board 5 and a circuit contact 6, wherein a waterproof structure 2 is arranged at the top end of the switch body layer 4, the waterproof structure 2 comprises a sealing membrane layer 202, the sealing membrane layer 202 and a primer layer 203, the primer layer 203 is connected to the top end of the switch body layer 4, the sealing membrane layer 202 is fixed at the top end of the primer layer 203, a silicone oil layer 201 is fixed at the top end of the sealing membrane layer 202, when a product is used, an entrance can contact a water position, waterproof protection needs to be performed on the switch, the primer layer 203 can perform adhesion protection on the inside, then the sealing membrane layer 202 on the primer layer 203 can isolate the inside to prevent water from entering the inside, the silicone oil layer 201 on the sealing membrane layer 202 can prevent water drops or dust from being adsorbed on the surface, and the waterproof protection on the switch can be realized through;

the two sides of the switch body layer 4 are respectively provided with a fixing structure 1, the fixing structure 1 comprises a connecting frame 101, a clamping shell 102, a telescopic block 103, a first telescopic spring 104, a clamping block 105, a fixing block 106 and a clamping groove 107, the connecting frame 101 is respectively arranged at the two ends of the switch body layer 4, the clamping shell 102 is arranged at the bottom end of the connecting frame 101, the clamping groove 107 is arranged at the two sides of the top end inside the clamping shell 102, the fixing block 106 is fixed at the middle position of the bottom end of the connecting frame 101, the first telescopic spring 104 is arranged at the two sides of the fixing block 106, the telescopic block 103 is connected to one side of the first telescopic spring 104, the clamping block 105 is fixed at the top end of the telescopic block 103, the telescopic block 103 is arranged inside the clamping shell 102, a clamping structure is formed between the clamping shell 102 and the telescopic block 103, the membrane switch needs to be installed, the telescopic block 103 on the fixing block 106 is squeezed to tighten, the first telescopic spring 104 can automatically stretch the telescopic block 103 to the original position, so that the membrane switch can be fixedly installed, and the fixing mode is simple and convenient;

the bottom end of the switch body layer 4 is connected with a circuit board 5, the bottom end of the circuit board 5 is fixed with a circuit contact 6, the interior of the switch body layer 4 is provided with a pressing structure 3, the pressing structure 3 comprises a pressing elastic sheet 301, an upper contact 302, a telescopic shell 303, a second telescopic spring 304, a telescopic rod 305, a telescopic slot 306, a third telescopic spring 307 and a lower contact 308, the pressing elastic sheet 301 is arranged at the top end of the interior of the switch body layer 4, the telescopic shell 303 is arranged at both sides of the pressing elastic sheet 301, the second telescopic spring 304 is arranged in the telescopic shell 303, the upper contact 302 is fixed at the bottom end of the pressing elastic sheet 301, the lower contact 308 is fixed at the bottom end of the upper contact 302, the third telescopic spring 307 is arranged in the telescopic slot 306, the telescopic rod 305 is fixed at the top end of the third telescopic spring 307, a telescopic structure is formed between the telescopic rod 305 and the telescopic slot 306, the telescopic, and the telescopic groove 306 is symmetrically distributed about the vertical center line of the lower contact 308, the membrane switch can be frequently pressed, the service life of the switch needs to be protected, the second telescopic spring 304 is fixed on the pressing elastic sheet 301, the second telescopic spring 304 can buffer and protect the pressing elastic sheet 301, when the corresponding position is pressed, the telescopic rod 305 can be in telescopic contact with the top end of the upper contact 302 to perform shock absorption protection on the upper contact 302, and the service life of the switch is prolonged.

The working principle is as follows: when the membrane switch fixing device is used, firstly, the membrane switch needs to be installed, the telescopic block 103 on the fixing block 106 is squeezed to be tightened and inserted into the clamping shell 102, the first telescopic spring 104 can automatically stretch the telescopic block 103 to the original position, the membrane switch can be fixedly installed, and the fixing mode is simple and convenient.

Afterwards, the product is when using the position that the approach can contact water, need carry out water proof to the switch, and primer layer 203 can carry out the adhesion protection to inside, then sealed film layer 202 on primer layer 203 can be isolated to inside, prevents inside intaking, and the silicone oil layer 201 on the sealed film layer 202 can prevent drop of water or dust absorption on the surface, realizes the water proof to the switch through the multilayer protection.

Finally, the membrane switch can often be pressed, needs protect the life of switch, and fixed second expanding spring 304 on pressing shell fragment 301, second expanding spring 304 can cushion protection pressing shell fragment 301, and when pressing the relevant position, telescopic link 305 can stretch out and draw back the top that contacts 302 and carry out shock attenuation protection to last contact 302, extension switch's life.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a take compound membrane switch of flexible touch-control screen, includes switch body layer (4), circuit board (5) and circuit contact (6), its characterized in that: the switch comprises a switch body layer (4), wherein a waterproof structure (2) is arranged at the top end of the switch body layer (4), fixing structures (1) are arranged on two sides of the switch body layer (4), a circuit board (5) is connected to the bottom end of the switch body layer (4), a circuit contact (6) is fixed to the bottom end of the circuit board (5), a pressing structure (3) is arranged inside the switch body layer (4), the pressing structure (3) comprises a pressing elastic sheet (301), an upper contact (302), a telescopic shell (303), a second telescopic spring (304), a telescopic rod (305), a telescopic groove (306), a third telescopic spring (307) and a lower contact (308), the pressing elastic sheet (301) is arranged at the top end inside the switch body layer (4), the telescopic shells (303) are arranged on two sides of the pressing elastic sheet (301), the second telescopic spring (304) is arranged inside the telescopic shell (303), an upper contact (302) is fixed at the bottom end of the pressing elastic sheet (301), and a lower contact (308) is fixed at the bottom end of the upper contact (302).

2. The composite membrane switch with the flexible touch screen according to claim 1, wherein: fixed knot constructs (1) including connecting frame (101), card shell (102), flexible piece (103), first expanding spring (104), fixture block (105), fixed block (106) and draw-in groove (107), connecting frame (101) all set up the both ends at the body layer of switch (4), card shell (102) are installed to the bottom of connecting frame (101), the both sides on the inside top of card shell (102) are provided with draw-in groove (107), the intermediate position department of the bottom of connecting frame (101) is fixed with fixed block (106), first expanding spring (104) are installed to the both sides of fixed block (106), one side of first expanding spring (104) all is connected with flexible piece (103), the top of flexible piece (103) all is fixed with fixture block (105).

3. The composite membrane switch with the flexible touch screen according to claim 2, wherein: the telescopic block (103) is installed inside the clamping shell (102), and a clamping structure is formed between the clamping shell (102) and the telescopic block (103).

4. The composite membrane switch with the flexible touch screen according to claim 1, wherein: waterproof construction (2) are including sealed thin film layer (202), sealed thin film layer (202) and primer layer (203), the top at switch body layer (4) is connected in primer layer (203), the top of primer layer (203) is fixed with sealed thin film layer (202), the top of sealed thin film layer (202) is fixed with silicon oil layer (201).

5. The composite membrane switch with the flexible touch screen according to claim 1, wherein: the telescopic structure is characterized in that a third telescopic spring (307) is installed inside the telescopic groove (306), a telescopic rod (305) is fixed at the top end of the third telescopic spring (307), and a telescopic structure is formed between the telescopic rod (305) and the telescopic groove (306).

6. The composite membrane switch with the flexible touch screen according to claim 5, wherein: the two sides of the lower contact (308) are provided with telescopic grooves (306), and the telescopic grooves (306) are symmetrically distributed around the vertical center line of the lower contact (308).