CN216435738U

CN216435738U - Membrane switch with standard USB protocol

Info

Publication number: CN216435738U
Application number: CN202122977311.1U
Authority: CN
Inventors: 黄远常; 乔洪亮; 杨小林; 温庆钦; 宋来毅
Original assignee: Guangzhou Kay-Ee Membrane Keyboard Switch Corp
Current assignee: Guangzhou Kay-Ee Membrane Keyboard Switch Corp
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-03
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a take membrane switch of standard USB agreement, includes the switch main part, the switch main part includes panel layer, face glue film, overburden, isolation layer, circuit layer, the gum layer that arranges in proper order after to in the past, the circuit layer is including basic unit and the circuit of printing in the basic unit, the switch main part is still including locating the positive top glue film on panel layer, circuit connection has the wire, the back on circuit layer is equipped with the surrounding frame of enclosing in the wire periphery, the wire passes the surrounding frame and is connected with USB TYPE-A interface. The utility model provides a membrane switch is connected with the USBTYPE-A interface through the wire, and the USBTYPE-A interface is the most extensive interface TYPE of using at present, can make membrane switch can realize alternately with the equipment connection that has the UCB interface, makes equipment need not to set up dedicated interface again for membrane switch has better commonality.

Description

Membrane switch with standard USB protocol

Technical Field

The utility model relates to a membrane switch field, concretely relates to take membrane switch of standard USB agreement.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel, and 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.

In the prior art, the membrane switch is mainly provided with a connecting terminal through a wire, and then the connecting terminal is connected to an external device, for example, the membrane switch provided in patent document No. CN201921078317.1 or patent document No. CN 201921076704.1. The connecting end of the membrane switch can also be called as a golden finger connector, the shape and specification of the golden finger connector are various, so that the external equipment needs to be provided with an interface matched with the shape and specification of the metal finger connector, interaction between the external equipment and the membrane switch can be realized, the universality is poor, and the existing membrane switch needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a take membrane switch of standard USB agreement.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a take membrane switch of standard USB agreement, includes the switch main part, the switch main part includes panel layer, face glue film, overburden, isolation layer, circuit layer, gum layer that arrange in proper order after to in the past, the circuit layer is including basic unit and the circuit of printing in basic unit, be equipped with a plurality of button on the panel layer, the isolation layer is equipped with a plurality of metal shrapnel, be equipped with a plurality of contact on the circuit, every metal shrapnel has a button and one correspondingly the contact, metal shrapnel includes the contact plate and supports four shell fragment feet on the contact plate, its characterized in that: the switch main part is still including locating the top glue film on the front of panel layer, circuit connection has the wire, the back on circuit layer is equipped with the surrounding frame of enclosing in the wire periphery, the wire passes the surrounding frame and is connected with USB TYPE-A interface, be provided with the silastic-layer of parcel in the wire outside in the surrounding frame.

In the utility model discloses in, the enclosure frame is made by the PMMA material, and its thickness is more than or equal to 1 mm.

In the present invention, the cross-sectional shape of the enclosure frame is square.

The utility model discloses in, the bounding box pastes on the back on circuit layer.

In the present invention, the switch main body has a trapezoidal shape.

The utility model discloses in, the circuit layer is PCB, and its thickness is more than or equal to 1 mm.

The utility model discloses in, the breach of middle part for running through the setting of top glue film, the button is located the breach.

The utility model has the advantages that: the utility model provides a membrane switch is connected with the USBTYPE-A interface through the wire, and the USBTYPE-A interface is the most extensive interface TYPE of using at present, can make membrane switch can realize alternately with the equipment connection that has the UCB interface, makes equipment need not to set up dedicated interface again for membrane switch has better commonality. In addition, the membrane switch can protect the connection position of the lead and the circuit through the surrounding frame and the silicon rubber layer, the quality of structural stability is guaranteed, and the purpose of prolonging the service life of the membrane switch is achieved.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

FIG. 1 is a side view of the present embodiment;

FIG. 2 is a front view of the present embodiment;

FIG. 3 is a schematic structural view of the panel layer, the surface glue layer, the covering layer and the isolation layer removed.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Referring to fig. 1-3, a take membrane switch of standard USB agreement, includes the switch main part, the switch main part includes panel layer 1, face glue layer 2, overburden 3, isolation layer 4, circuit layer 5, the gum layer 6 that arrange in proper order after to in the past, circuit layer 5 is including basic unit 51 and the circuit 52 of printing on basic unit 51, isolation layer 4 and gum layer 6 are made by the adhesive. The switch main part is still including locating top glue film 9 on the front of panel layer 1, and top glue film 9 is used for providing the viscous force for membrane switch's front to membrane switch's front is connected with external equipment. The circuit 52 is connected with wire 10, the back of line layer 5 is equipped with the surrounding frame 11 that encloses in the wire 10 periphery, wire 10 passes surrounding frame 11 and is connected with USB TYPE-A interface 12, be provided with the silastic-layer 13 of parcel in the wire 10 outside in the surrounding frame 11.

In the above structure, the USB TYPE-a interface 12 is the most widely used interface TYPE at present, so that the membrane switch can be connected with the device with the UCB interface to realize interaction, and the device does not need to be provided with a dedicated interface, so that the membrane switch has better universality and is particularly suitable for being applied to the reconstruction device. And the silicone rubber layer 13 can be completely filled in the enclosure frame 11, or can only wrap the outside of the lead 10, and the connection position of the lead 10 and the circuit 52 can be protected through the enclosure frame 11 and the silicone rubber layer 13, so that the quality of structural stability is ensured.

As a preferred embodiment, a plurality of keys 7 are arranged on the panel layer 1, a plurality of metal elastic sheets 8 are arranged on the isolation layer 4, a plurality of contacts 53 are arranged on the circuit 52, each metal elastic sheet 8 corresponds to one key 7 and one contact 53, and after the key 7 is pressed, the metal elastic sheets 8 can be matched with the contacts 53, so that the circuit 52 forms a loop to generate a control signal. In this embodiment, the metal elastic sheet 8 includes a contact plate and four elastic sheet feet supported on the contact plate, a deformable structure is arranged at a connection position between the contact plate and the elastic sheet feet, and the metal elastic sheet 8 can be reset after being pressed through the above structure.

As a preferred embodiment, the top adhesive layer 9 is used for providing an adhesive force for the front surface of the membrane switch, so that the membrane switch can be connected with the equipment through the top adhesive layer 9 in addition to the back adhesive layer 6, a double-layer connection effect is formed, and the quality of the membrane switch mounted on the equipment is ensured. In the present embodiment, the top adhesive layer 9 is formed by an adhesive, and the thickness thereof is greater than or equal to 0.13 mm. The surface of the top glue layer 9 can be provided with a release film, and the release film is torn off when the adhesive tape is used. Furthermore, the middle part of the top glue layer 9 is a notch which is arranged in a penetrating mode, and the key 7 is located in the notch so as to prevent the top glue layer 9 from affecting the key 7. Furthermore, the thickness of the key 7 is within 0.2-0.3mm outside the extending gap of the key 7, so that the key 7 extends out of the gap by at least 0.7mm, the use effect of the key 7 is ensured, and the influence of the top rubber layer 9 on the use of the key 7 is avoided.

In the above structure, the surrounding frame 11 is made of PMMA material, and the thickness thereof is greater than or equal to 1mm, so as to ensure the structural strength of the surrounding frame 11. The cross-sectional shape of surrounding frame 11 is square, surrounding frame 11 pastes on the back of circuit layer 5 through two-sided adhesive layer.

In a preferred embodiment, the circuit layer 5 is a PCB, and has a thickness greater than or equal to 1 mm. The switch main body is trapezoidal in shape, the total thickness of the switch main body is 1.95mm, and the structure is stable.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims

1. The utility model provides a take membrane switch of standard USB agreement, includes the switch main part, the switch main part includes panel layer (1), face glue layer (2), overburden (3), isolation layer (4), circuit layer (5), gum layer (6) that arrange in proper order after to in the past, circuit layer (5) are including basic unit (51) and circuit (52) of printing on basic unit (51), be equipped with a plurality of button (7) on panel layer (1), isolation layer (4) are equipped with a plurality of metal shrapnel (8), be equipped with a plurality of contact (53) on circuit (52), every metal shrapnel (8) correspond one button (7) and one contact (53), metal shrapnel (8) are including contact plate and four shell fragment feet that support on the contact plate, its characterized in that: the switch main part is still including locating top glue film (9) on the front of panel layer (1), circuit (52) are connected with wire (10), the back of circuit layer (5) is equipped with encloses enclosure frame (11) in wire (10) periphery, wire (10) pass enclosure frame (11) and are connected with USB TYPE-A interface (12), be provided with in enclosure frame (11) and wrap up in wire (10) outside silastic layer (13).

2. The membrane switch with the standard USB protocol according to claim 1, wherein: the surrounding frame (11) is made of PMMA material, and the thickness of the surrounding frame is larger than or equal to 1 mm.

3. The membrane switch with the standard USB protocol according to claim 1, wherein: the cross section of the surrounding frame (11) is square.

4. The membrane switch with the standard USB protocol according to claim 1, wherein: the surrounding frame (11) is pasted on the back of the circuit layer (5).

5. The membrane switch with the standard USB protocol according to claim 1, wherein: the switch main body is trapezoidal in shape.

6. The membrane switch with standard USB protocol of claim 1, wherein: the circuit layer (5) is a PCB, and the thickness of the circuit layer is greater than or equal to 1 mm.

7. The membrane switch with the standard USB protocol according to claim 1, wherein: the middle part of the top rubber layer (9) is a notch which is arranged in a penetrating mode, and the key (7) is located in the notch.