CN210349641U

CN210349641U - Film switch adopting glue dripping process

Info

Publication number: CN210349641U
Application number: CN201921684560.8U
Authority: CN
Inventors: 吴志辉; 陈小辉; 阳晟; 王迟华
Original assignee: Taikeming (dongguan) Membrane Products Technology Ltd
Current assignee: Taikeming (dongguan) Membrane Products Technology Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-04-17
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a glue dripping technology membrane switch, including inside hollow structure's casing, one side is equipped with integrated circuit in the casing, just integrated circuit's one end extends to inside the casing, the top symmetry of casing is equipped with two openings, and fixedly connected with panel in the opening. The utility model discloses a casing that sets up, because it wholly adopts the glue dripping technology to make, the compliance is better, resist buckling, glue dripping height can be controlled at will, and the shape variety, and the price is cheaper, and its inside gum that is equipped with and parts such as face adhesive paper, make the contact that shell fragment and panel electrocute more stable, can not cause the contact failure to appear between panel and the shell fragment because of long-term pressing, the tie point department that utilizes a pair of shell fragment and integrated circuit to go forward further fixedly, prevent simultaneously that it leads to becoming flexible because of outside impact between the two, make the connection between the inside parts of switch more stable, promote the holistic use quality of switch.

Description

Film switch adopting glue dripping process

Technical Field

The utility model relates to a conductive film field especially relates to a glue dripping technology membrane switch.

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. When the membrane switch is pressed down, the contact of the upper circuit deforms downwards to be in contact with the polar plate of the lower circuit for conduction, after the finger is loosened, the contact of the upper circuit rebounds, the circuit is disconnected, and the loop triggers a signal. The membrane switch has the advantages of rigorous structure, attractive appearance and good sealing property. Has the characteristics of moisture resistance, long service life and the like. 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.

But current membrane switch, the whole compliance of its shell is very poor, and is not anti buckling, and when the user pressed the panel, contact failure easily appeared between inboard contact of panel and the shell fragment, lack damping device at shell fragment and integrated circuit electric connection's node, when receiving external force striking, cause not hard up to the joint department of switch internal element easily, ordinary button beats protruding membrane switch has the limitation to beating protruding height, need pay extra mould expense of beating, so, design a solution this type of problem that glue dripping technology membrane switch can be fine.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: the existing membrane switch is too single in forming process and poor in material selection, so that the overall quality of the switch is uneven, internal elements are easy to loosen after the membrane switch is used for a long time, and the condition of poor contact often occurs when a panel is pressed.

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

a film switch for a glue dripping process comprises a shell with a hollow structure, wherein an integrated circuit is arranged on one side in the shell, one end of the integrated circuit extends into the shell, two openings are symmetrically formed in the top end of the shell, a panel is fixedly connected into the openings, a spring plate is arranged on one side, close to the interior of the shell, of the panel, a transparent dragon is arranged on one side, close to the spring plate, of the integrated circuit, a middle sheet layer is arranged at the top end of the transparent dragon, a shielding layer is arranged at the top end of the middle sheet layer, face adhesive paper is arranged at the top end of the shielding layer, through holes are formed in the transparent dragon, the middle sheet layer, the shielding layer and the face adhesive paper in a penetrating mode, the spring plate is electrically connected with the integrated circuit through the through holes, a display screen is fixedly connected onto the inner side of the shell and connected with the integrated circuit through wires, two abutting blocks I are symmetrically arranged on two, the first abutting block is fixedly connected with the inner side wall of the shell.

Preferably, the one end electric connection of integrated circuit has the connector, integrated circuit is close to the one side of casing inside wall and bonds and has the gum, the another side of gum bonds with the inside wall of casing.

Preferably, two abutting blocks II made of high-temperature-resistant soft rubber materials are symmetrically arranged on two sides of the display screen, and the bottom ends of the abutting blocks II are fixedly connected with the inner side wall of the shell.

Preferably, the first abutting block is made of a high-temperature-resistant soft rubber material, an opening is formed in the side wall of the shell close to one side of the display screen, and a transparent plate made of a PVC material is clamped in the opening.

Preferably, the corners of the shell are provided with arc chamfers, and the shell is mainly made of epoxy resin crystal glue.

The utility model has the advantages that: through the casing that sets up, because its whole adoption glue dripping technology of adopting makes, the compliance is better, resist buckling, glue dripping highly can be controlled at will, and the shape variety, and the price is cheaper, and its inside back glue that is equipped with and parts such as face adhesive paper, make the contact that the shell fragment electrocute with the panel more stable, can not lead to the fact because of long-term pressing that contact failure appears between panel and the shell fragment, the tie point department that utilizes to a pair of shell fragment of piece and integrated circuit further fixes, prevent simultaneously that it is not hard up because of outside impact leads to between the two, make the connection between the inside parts of switch more stable, promote the holistic use quality of switch.

Drawings

Fig. 1 is a cross-sectional view of a top view structure of a film switch made by a glue dropping process according to the present invention;

FIG. 2 is an exploded view of the integrated circuit at the spring joint;

fig. 3 is a side view of a membrane switch made by a glue dropping process according to the present invention;

fig. 4 is a top view of a membrane switch of the glue dropping process provided by the present invention;

FIG. 5 is an enlarged view of the structure A in FIG. 3;

fig. 6 is an enlarged view of the structure B in fig. 3.

In the figure: the display panel comprises a shell 1, a panel 2, a spring plate 3, a first abutting block 4, a display screen 5, an integrated circuit 6, a back adhesive 7, a transparent nylon 8, a sheet layer 9, a shielding layer 10, a piece of face adhesive paper 11, a connector 12, a conducting wire 13, a transparent plate 14 and a second abutting block 15.

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. 1-6, a film switch of glue dropping process comprises a housing 1 with a hollow structure inside, wherein the corners of the housing 1 are provided with arc chamfers, the housing 1 is mainly made of epoxy crystal glue drops, the flexibility of the housing 1 is improved, the housing 1 has strong bending resistance, the glue dropping height can be freely adjusted according to actual production requirements, the manufacturing cost is lower, one side of the housing 1 is provided with an integrated circuit 6, one end of the integrated circuit 6 is electrically connected with a connector 12, one side of the integrated circuit 6 close to the inner side wall of the housing 1 is bonded with a back glue 7, the integrated circuit 6 is fixed on the inner wall of the housing 1 by the back glue 7, the integrated circuit is not easy to fall off, one end of the integrated circuit 6 extends into the housing 1, two openings are symmetrically arranged at the top end of the housing 1, and a panel 2 is fixedly connected in the openings, the panel 2 is provided with an elastic sheet 3 at one side close to the inside of the shell 1, the integrated circuit 6 is provided with a transparent dragon 8 at one side close to the elastic sheet 3, the top end of the transparent dragon 8 is provided with a spacing sheet layer 9, the top end of the spacing sheet layer 9 is provided with a shielding layer 10, the top end of the shielding layer 10 is provided with face adhesive paper 11, through holes are arranged on the transparent dragon 8, the spacing sheet layer 9, the shielding layer 10 and the face adhesive paper 11, the elastic sheet 3 is electrically connected with the integrated circuit 6 through the through holes, so as to enhance the stability of the connection between the elastic sheet 3 and the integrated circuit 6, the inner side of the shell 1 is fixedly connected with a display screen 5, the display screen 5 is connected with the integrated circuit 6 by means of a lead 13, two abutting blocks 15 made of high temperature resistant soft adhesive material are symmetrically arranged at two sides of the display screen 5, the bottom ends of the abutting blocks 15 are fixedly connected with the inner side wall, the first abutting block 4 is fixedly connected with the inner side wall of the shell 1, the first abutting block 4 is made of high-temperature-resistant soft rubber materials, an opening is formed in the side wall, close to one side of the display screen 5, of the shell 1, a transparent plate 14 made of PVC materials is connected in the opening in a clamped mode, the display screen 5 is protected, and the display screen is prevented from being exposed to the outside and damaged when being impacted.

The utility model discloses in, the user is through pressing panel 2, make panel 2's contact and shell fragment 3 contact, shell fragment 3 pushes down, make form the closed power between integrated circuit 6 and the shell fragment 3, whole switching power supply switch-on, play a waterproof with the help of transparent dragon 8 to integrated circuit 6, wear-resisting effect, and lamella 9 between being equipped with between shell fragment 3 and integrated circuit 6, shielding layer 10 and face adhesive tape 11, make shell fragment 3 and integrated circuit 6, the connection between panel 2 is more stable, when receiving external striking, utilize to support piece one 4 and support piece two 15, to integrated circuit 6 and shell fragment 3, the junction department of display screen 5 carries out the damping and effectively fixes, it is not hard up because of vibrating to prevent that it from appearing, with this quality that promotes whole membrane switch.

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

1. A film switch for a glue dripping process comprises a shell (1) with a hollow structure inside, and is characterized in that an integrated circuit (6) is arranged on one side of the shell (1), one end of the integrated circuit (6) extends into the shell (1), two openings are symmetrically formed in the top end of the shell (1), a panel (2) is fixedly connected into each opening, an elastic sheet (3) is arranged on one side, close to the inside of the shell (1), of the panel (2), a transparent dragon (8) is arranged on one side, close to the elastic sheet (3), of the integrated circuit (6), a room sheet layer (9) is arranged on the top end of the transparent dragon (8), a shielding layer (10) is arranged on the top end of the room sheet layer (9), a face gummed paper (11) is arranged on the top end of the shielding layer (10), and through holes are formed in the transparent dragon (8), the room sheet layer (9), the shielding layer (10) and the face gummed paper (11, and the elastic sheet (3) is electrically connected with the integrated circuit (6) through the through hole, a display screen (5) is fixedly connected to the inner side of the shell (1), the display screen (5) is connected with the integrated circuit (6) by means of a wire (13), two abutting blocks I (4) are symmetrically arranged on two sides of a connecting node of the elastic sheet (3) and the integrated circuit (6), and the abutting blocks I (4) are fixedly connected with the inner side wall of the shell (1).

2. The membrane switch according to claim 1, wherein one end of the integrated circuit (6) is electrically connected to the connector (12), a back adhesive (7) is bonded to one side of the integrated circuit (6) close to the inner side wall of the housing (1), and the other side of the back adhesive (7) is bonded to the inner side wall of the housing (1).

3. The film switch of claim 1, wherein two support blocks (15) made of high temperature resistant soft rubber material are symmetrically arranged on two sides of the display screen (5), and the bottom ends of the support blocks (15) are fixedly connected with the inner side wall of the housing (1).

4. The membrane switch according to claim 1, wherein the first abutting block (4) is made of a high temperature resistant soft rubber material, and an opening is provided on a side wall of the housing (1) near the display screen (5), and a transparent plate (14) made of a PVC material is clamped in the opening.

5. The membrane switch according to claim 1, wherein the corners of the housing (1) are provided with arc chamfers, and the housing (1) is mainly made of epoxy crystal glue.