CN221079871U

CN221079871U - Flexible membrane switch

Info

Publication number: CN221079871U
Application number: CN202323050416.8U
Authority: CN
Inventors: 纪有法
Original assignee: Zhejiang Shuangdun Electronic Technology Co ltd
Current assignee: Zhejiang Shuangdun Electronic Technology Co ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-06-04
Anticipated expiration: 2033-11-13

Abstract

The utility model discloses a flexible film switch, which comprises a flexible circuit substrate, wherein a back adhesive layer is arranged at the bottom of the flexible circuit substrate, an insulating seat is arranged at the top of the flexible circuit substrate, through holes are symmetrically formed in the insulating seat, guide rods are fixedly connected between the top and the bottom of the inner wall of each through hole, metal elastic sheets are axially and slidably connected on the two guide rods, a return spring is sleeved on the surface of each guide rod and below each metal elastic sheet, and a static contact is arranged at the central position of the top of the flexible circuit substrate. This flexible membrane switch, structural design is reasonable, convenient to use has better waterproof dustproof effect, through diversified protection setting, can prevent debris contact and influence the sensitivity of switch to can provide better rebound ability, prevent that inside shell fragment from because of the unable return that warp and cause, prolonged the life of switch, can satisfy diversified user demand.

Description

Flexible membrane switch

Technical Field

The utility model relates to the technical field of membrane switches, in particular to a flexible membrane switch.

Background

The thin film switch is also called as a touch keyboard, adopts an integral sealing structure formed by combining plane layers, and is an integrated electronic component integrating light, mechanical and electrical by sealing a key switch, a panel, a mark, a symbol display and a lining plate together.

The existing flexible membrane switch has some problems when in use, such as most of the existing flexible membrane switch does not have good waterproof and dustproof effects, sundries are easy to contact with internal contacts to influence sensitivity, and the existing flexible membrane switch also has most of the existing flexible membrane switch does not have good rebound performance, and after long-term use, the metal elastic sheet in the existing flexible membrane switch is easy to deform, so that the service life of the switch is reduced.

Disclosure of utility model

The present utility model is directed to a flexible membrane switch, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a flexible film switch, includes flexible circuit substrate, the gum layer is installed to flexible circuit substrate's bottom, the insulating seat is installed at flexible circuit substrate's top, the through-hole has been seted up to the symmetry on the insulating seat, fixedly connected with guide bar between through-hole inner wall top and the bottom, there is the metal shrapnel along axial sliding connection on two guide bars, guide bar surface and the below cover that is located the metal shrapnel are equipped with return spring, the central point department at flexible circuit substrate top installs the stationary contact, movable contact is installed to the inboard of metal shrapnel, the outside fixedly connected with protection folding cover between flexible circuit substrate and the metal shrapnel and corresponding stationary contact and movable contact, the insulating cover is installed in the outside of metal shrapnel, the top of metal shrapnel is through connecting seat fixedly connected with panel layer, press button is installed at the top of panel layer.

Further, the first protective film is fixedly connected to the inner wall of the through hole, and the second protective film is fixedly connected to the edge between the insulating base and the panel layer.

Further, a cushion pad is fixedly connected to the top of the inner wall of the through hole and corresponds to the position of the guide rod, and the cushion pad is a rubber ring.

Further, a pressing groove is formed in the top of the pressing button, and a plurality of anti-slip protruding points are fixedly connected to the inner wall of the pressing groove.

Further, a vent hole is formed in the insulating seat and below the corresponding through hole.

Further, the bottom of the return spring is fixedly connected with the bottom of the inner wall of the through hole, and the top of the return spring is in contact with the metal elastic sheet.

Compared with the prior art, the utility model has the following beneficial effects:

The metal elastic sheet with the movable contact is connected onto the two guide rods in a sliding manner to form vertical guide after being pressed, the movable contact and the fixed contact can be supported by the return spring to play a role in return, the arranged protective folding cover can protect the movable contact from the outer sides of the fixed contact and the movable contact, dust entering or water entering is prevented from affecting normal contact use, the first protective film can prevent sundries from entering from the through hole, the second protective film can prevent the sundries from penetrating into a gap between the insulating seat and the panel layer to affect the service life of the membrane switch, and the flexible membrane switch has reasonable structural design and convenient use, has a good waterproof and dustproof effect, can prevent the sundries from contacting the inner contact to affect the sensitivity of the switch through multidirectional protective arrangement, can provide good rebound performance, can prevent the inner elastic sheet from being unable to return due to deformation, prolongs the service life of the switch, and can meet the multidirectional use requirement.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present utility model;

Fig. 2 is an enlarged view of a portion of fig. 1 A-A in accordance with the present utility model.

In the figure: the flexible circuit board comprises a flexible circuit substrate 1, a back adhesive layer 2, an insulating seat 3, a through hole 4, a guide rod 5, a metal elastic sheet 6, a return spring 7, a static contact 8, a movable contact 9, a protective folding cover 10, an insulating sleeve 11, a connecting seat 12, a panel layer 13, a pressing button 14, a first protective film 15, a second protective film 16, a buffer cushion 17, a pressing groove 18 and a vent 19.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a flexible film switch comprises a flexible circuit substrate 1, a back adhesive layer 2 is installed at the bottom of the flexible circuit substrate 1, an insulating seat 3 is installed at the top of the flexible circuit substrate 1, through holes 4 are symmetrically formed in the insulating seat 3, guide rods 5 are fixedly connected between the top and the bottom of the inner walls of the through holes 4, metal elastic pieces 6 are axially and slidably connected above the two guide rods 5, return springs 7 are sleeved on the surfaces of the guide rods 5 and below the metal elastic pieces 6, a fixed contact 8 is installed at the central position of the top of the flexible circuit substrate 1, a movable contact 9 is installed at the inner side of the metal elastic pieces 6, the metal elastic pieces 6 with the movable contact 9 are slidably connected onto the two guide rods 5 to form vertical guide after being pressed, a protective folding cover 10 can be fixedly connected between the flexible circuit substrate 1 and the metal elastic pieces 6 and corresponding to the outer sides of the fixed contact 8 and the movable contact 9, a protective folding cover 10 can protect the outer sides of the fixed contact 8 and the movable contact 9 from ash or water entering and influence on the outer sides of the metal elastic pieces 6, a panel 13 is installed at the outer sides of the metal elastic pieces 6 through an insulating cover 13, a connecting seat 13 is installed at the top of the metal elastic pieces 6, and a connecting seat 13 is installed at the outer sides of the metal elastic pieces 6.

Specifically, fixedly connected with first protection film 15 on the inner wall of opening 4, the edge fixedly connected with second protection film 16 between insulating seat 3 and the panel layer 13, first protection film 15 can prevent debris from getting into from opening 4, and the same second protection film 16 can prevent debris infiltration to the space between insulating seat 3 and the panel layer 13, influences membrane switch's life.

Specifically, the cushion pad 17 is fixedly connected to the top of the inner wall of the through hole 4 and corresponds to the position of the guide rod 5, the cushion pad 17 is a rubber ring, and the cushion pad 17 can prevent the metal elastic sheet 6 from hard collision with the top of the inner wall of the through hole 4 during rebound.

Specifically, the top of the pressing button 14 is provided with a pressing groove 18, a plurality of anti-skidding salient points are fixedly connected to the inner wall of the pressing groove 18, the pressing groove 18 is convenient for a user to press the pressing button 14, and the anti-skidding salient points play a certain anti-skidding role.

Specifically, the air vent 19 is formed on the insulating base 3 and below the corresponding through hole 4, and the air vent 19 can form a certain air flow channel.

Specifically, the bottom of return spring 7 is fixed connection with the inner wall bottom of opening 4, and the top and the metal shrapnel 6 of return spring 7 contact each other.

This flexible membrane switch, structural design is reasonable, convenient to use has better waterproof dustproof effect, through diversified protection setting, can prevent debris contact and influence the sensitivity of switch to can provide better rebound ability, prevent that inside shell fragment from because of the unable return that warp and cause, prolonged the life of switch, can satisfy diversified user demand.

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

Claims

1. A flexible membrane switch comprising a flexible circuit substrate (1), characterized in that: the utility model discloses a flexible circuit board, including flexible circuit board (1), insulating seat (3) are installed to the bottom of flexible circuit board (1), through-hole (4) have been seted up to the top of flexible circuit board (1), fixedly connected with guide bar (5) between through-hole (4) inner wall top and the bottom, along axial sliding connection there being metal shrapnel (6) above two guide bars (5), guide bar (5) surface and the below cover that is located metal shrapnel (6) are equipped with return spring (7), stationary contact (8) are installed in central point department at flexible circuit board (1) top, movable contact (9) are installed to the inboard of metal shrapnel (6), flexible circuit board (1) and metal shrapnel (6) between and correspond outside fixedly connected with protection folding cover (10) of stationary contact (8) and movable contact (9), insulating cover (11) are installed in the outside of metal shrapnel (6), panel layer (13) are passed through to the top of metal shrapnel (6) fixedly connected with panel layer (13), button (14) are installed on panel layer (13).

2. A flexible membrane switch as claimed in claim 1 wherein: the inner wall of the through hole (4) is fixedly connected with a first protective film (15), and the edge between the insulating seat (3) and the panel layer (13) is fixedly connected with a second protective film (16).

3. A flexible membrane switch as claimed in claim 2 wherein: the top of the inner wall of the through hole (4) is fixedly connected with a buffer pad (17) at a position corresponding to the guide rod (5), and the buffer pad (17) is a rubber ring.

4. A flexible membrane switch as claimed in claim 3 wherein: the top of the pressing button (14) is provided with a pressing groove (18), and a plurality of anti-slip salient points are fixedly connected to the inner wall of the pressing groove (18).

5. A flexible membrane switch as claimed in claim 4 wherein: and a vent hole (19) is formed in the insulating seat (3) and corresponds to the lower part of the through hole (4).

6. A flexible membrane switch as claimed in claim 5 wherein: the bottom of the return spring (7) is fixedly connected with the bottom of the inner wall of the through hole (4), and the top of the return spring (7) is in contact with the metal elastic sheet (6).