CN213905204U

CN213905204U - Thin film switch

Info

Publication number: CN213905204U
Application number: CN202023144654.1U
Authority: CN
Inventors: 李伟
Original assignee: Beijing Yinglida Sign Manufacturing Co ltd
Current assignee: Beijing Yinglida Sign Manufacturing Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-06
Anticipated expiration: 2030-12-23

Abstract

The application relates to the technical field of electronic elements, in particular to a membrane switch. The membrane switch comprises a membrane switch main body and a plurality of locking assemblies arranged on the outer peripheral face of the membrane switch main body, wherein each locking assembly comprises a connecting piece, a first limiting block arranged at one end of the connecting piece and a second limiting block arranged at one end of the connecting piece far away from the first limiting block, one side of the first limiting block close to the connecting piece is abutted against the upper end face of the membrane switch main body, and one side of the second limiting block close to the connecting piece is abutted against the lower end face of the membrane switch main body. This application has the effect that improves membrane switch's connection stability.

Description

Thin film switch

Technical Field

The application relates to the technical field of electronic elements, in particular to a membrane switch.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel. The membrane switch has the characteristics of rigorous structure, attractive appearance, good sealing property, 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.

The existing Chinese patent publication No. CN207217358U discloses a sealing non-hand-feeling film switch, which mainly comprises a face film layer, a circuit layer arranged below the face film layer and a back adhesive layer arranged below the circuit layer, wherein the face film layer, the circuit layer and the back adhesive layer are all fixed through double-sided adhesive tapes.

In view of the above-mentioned related art, the inventor believes that the above-mentioned sealing non-tactile thin film switch may be gradually released after a long-term use due to the fact that the double-sided tape may be delaminated after a long-term use. The defect that the connection of the hermeticity hand-free membrane switch is unstable exists.

SUMMERY OF THE UTILITY MODEL

In order to improve the connection stability of a sealing non-hand-feeling membrane switch, the application provides a membrane switch.

The application provides a membrane switch adopts following technical scheme:

the utility model provides a membrane switch, includes membrane switch main part and a plurality of locking Assembly that set up in the outer peripheral face of membrane switch main part, locking Assembly includes the connection piece, sets up in the first stopper of the one end of connection piece and sets up in the second stopper of the one end that the first stopper was kept away from to the connection piece, one side that first stopper is close to the connection piece and the up end butt of membrane switch main part, one side that the second stopper is close to the connection piece and the lower terminal surface butt of membrane switch main part.

Through adopting above-mentioned technical scheme, because one side that first stopper is close to the connection piece and the up end butt of membrane switch main part, one side that the second stopper is close to the connection piece and the lower terminal surface butt of membrane switch main part for first stopper and second stopper carry on spacingly to the membrane switch main part simultaneously, and then reduce the possibility that the membrane switch main part takes place to break away from. In addition, the membrane switch main body gives the first limiting block a friction limiting effect with the second limiting block, and therefore the possibility that the locking assembly is separated from the membrane switch main body is reduced.

Optionally, the locking assembly further comprises an elastic element arranged on one side of the first connecting piece close to the connecting piece, a locking hole is formed in the membrane switch main body in a penetrating mode, an insertion groove is formed in the second limiting block, and the elastic element penetrates through the locking hole and is inserted into the insertion groove.

Through adopting above-mentioned technical scheme, wear to establish the locking hole with the elastic component and insert and connect in the inserting groove for the elastic component restricts the removal of membrane switch main part, reduces the possibility that the locking subassembly breaks away from the membrane switch main part. The elastic piece is inserted in the insertion groove, so that the possibility of forming a gap between the elastic piece and the second limiting sheet is reduced. In addition, the groove wall of the insertion groove limits the movement of the elastic piece, and the possibility that the locking assembly is separated from the membrane switch main body is further reduced.

Optionally, the elastic element comprises a limiting column arranged on one side, close to the connecting sheet, of the first limiting block and a compression spring arranged between the limiting column and the first limiting block, a containing groove for containing the compression spring is formed in one side, close to the connecting sheet, of the first limiting block, and the limiting column is movably inserted into the containing groove.

Through adopting above-mentioned technical scheme, when needs installation locking Assembly, press spacing post and force spacing post to peg graft in the storage tank. The membrane switch main body is placed between the first limiting block and the second limiting sheet, when the limiting column is located at the position of the locking hole, the limiting column penetrates through the locking hole and is inserted into the insertion groove, and therefore the locking assembly is simpler and more convenient to install.

Optionally, the elastic element further comprises a limiting cover in threaded connection with one end, away from the connecting sheet, of the accommodating groove, one end of the compression spring is connected with the limiting cover, and one end, away from the limiting cover, of the compression spring is connected with the limiting column.

Through adopting above-mentioned technical scheme, because compression spring's one end is connected with spacing lid, compression spring keeps away from the one end and spacing post connection of spacing lid for compression spring's elasticity acts on same axis, and then improves compression spring's elastic utilization, improves the controllability to spacing post.

Optionally, the outer peripheral face of spacing post is provided with a plurality of spacing archs, the groove that slides that supplies spacing arch to slide is seted up to one side that the connection piece was kept away from to first stopper, the groove that slides communicates with the storage tank each other, just compression spring's one side butt is kept away from with spacing arch to the tank bottom in groove that slides.

By adopting the technical scheme, because the limiting protrusion slides in the sliding groove in a reciprocating manner, the groove wall of the sliding groove limits the movement of the limiting protrusion, the possibility that the limiting column rotates in the circumferential direction around the axis of the limiting column is reduced, the possibility that the compression spring is twisted is reduced, and the service life of the compression spring is prolonged indirectly. In addition, because the tank bottom of the sliding groove is abutted to one side, away from the compression spring, of the limiting protrusion, the possibility that the tank bottom of the sliding groove limits the limiting protrusion is further reduced, and the possibility that the limiting column is completely separated from the accommodating groove is further reduced.

Optionally, one side of the limiting cover close to the compression spring is provided with a limiting shaft, one side of the limiting column close to the compression spring is provided with a limiting sleeve, one end of the compression spring close to the limiting cover is sleeved on the outer peripheral surface of the limiting shaft, and the limiting sleeve is sleeved on one end of the compression spring close to the limiting column.

Through adopting above-mentioned technical scheme, because compression spring is close to the pot head of spacing lid and locates the outer peripheral face of spacing axle, the one end that compression spring is close to spacing post is established to the stop collar cover for spacing post and stop collar restriction compression spring's removal, and then reduce the possibility that compression spring takes place the skew, improve compression spring and spacing lid, compression spring and spacing post's stability of being connected. In addition, when the compression spring is damaged due to long-term use, the limiting cover can be detached, and then the compression spring is directly replaced, so that the compression spring is more simply and conveniently replaced.

Optionally, one side of the limiting column, which is close to the compression spring, is provided with a limiting hole, the limiting hole is coaxially formed with a through hole of the limiting sleeve, the limiting shaft sequentially penetrates through the compression spring and the limiting hole, and the limiting shaft is connected with the limiting column in a sliding manner.

Through adopting above-mentioned technical scheme, wear to establish compression spring and spacing hole in proper order with spacing axle, and spacing axle slides with spacing post and is connected for spacing axle gives compression spring a guide effect, and then reduces the possibility that compression spring takes place the abnormal bending, prolongs compression spring's live time.

Optionally, one side of the limiting cover, which is far away from the compression spring, is provided with a control groove matched with the hexagonal screwdriver.

Through adopting above-mentioned technical scheme, when spacing lid is dismantled to needs, because the control slot mutually supports with hexagonal screwdriver for the control slot gives the point of a control of staff, makes the installation and the dismantlement to spacing lid more simple and convenient.

Optionally, one side of the limiting column, which is far away from the compression spring, is provided with a guide surface.

Through adopting above-mentioned technical scheme, when needs place the membrane switch main part between first stopper and the spacing piece of second, the spigot surface at first with membrane switch main part butt, the membrane switch main part gives a guiding force of spacing post through the spigot surface. This guiding force forces spacing post to peg graft in the storage tank for the staff need not press spacing post for a long time when the installation locking Assembly, indirectly reduces the installation degree of difficulty to locking Assembly.

Optionally, the limiting column is made of an elastic material.

Through adopting above-mentioned technical scheme, because the material of spacing post is elastic material for at the in-process of installation locking Assembly, reduce the damage of spacing post to the membrane switch main part.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first limiting block and the second limiting block limit the membrane switch main body at the same time, so that the possibility of separation of the membrane switch main body is reduced;

2. the elastic piece penetrates through the locking hole and is inserted into the insertion groove, the elastic piece limits the movement of the membrane switch main body, the groove wall of the insertion groove limits the movement of the elastic piece, and then the possibility that the locking assembly is separated from the membrane switch main body is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a membrane switch according to an embodiment of the present application.

Fig. 2 is an exploded view of a membrane switch according to an embodiment of the present application.

Fig. 3 is an exploded view of the locking assembly shown in fig. 2.

Fig. 4 is a cross-sectional view of the locking assembly shown in fig. 2.

Description of reference numerals: 1. a membrane switch body; 2. a locking assembly; 3. a mask layer; 4. a circuit layer; 5. a back glue layer; 6. connecting sheets; 7. a first stopper; 8. a second limiting block; 9. an elastic member; 10. a locking hole; 11. inserting grooves; 12. a limiting column; 13. a compression spring; 14. a limiting cover; 15. a containing groove; 16. a guide surface; 17. a limiting bulge; 18. a sliding groove; 19. a limiting shaft; 20. a limiting sleeve; 21. a limiting hole; 22. and (4) controlling the groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a membrane switch. Referring to fig. 1 and 2, the membrane switch includes a membrane switch body 1 and a plurality of locking assemblies 2 disposed on an outer circumferential surface of the membrane switch body 1. In the present embodiment, four locking assemblies 2 are provided, and the membrane switch main body 1 is square, and the locking assemblies 2 are arranged in a central symmetry manner with the axis of the membrane switch main body 1 as the center.

Membrane switch main part 1 includes facial mask layer 3, sets up circuit layer 4 and the gum layer 5 of setting in circuit layer 4 below in facial mask layer 3 below, all fixes through the double faced adhesive tape between facial mask layer 3, circuit layer 4 and the gum layer 5.

The locking assemblies 2 are arranged on the four sides of the membrane switch, so that the locking assemblies 2 limit the surface membrane layer 3, the circuit layer 4 and the back glue layer 5, and the possibility of separation of the membrane switch main body 1 caused by degumming of the double-faced glue is reduced.

Referring to fig. 2 and 3, the locking assembly 2 includes a connecting piece 6, a first limiting block 7 integrally formed at one end of the connecting piece 6, a second limiting block 8 integrally formed at one end of the connecting piece 6 far away from the first limiting block 7, and an elastic member 9 disposed at one side of the first connecting piece 6 close to the connecting piece 6.

One side of the first limiting block 7 close to the connecting sheet 6 is abutted against the upper end face of the membrane switch main body 1, and one side of the second limiting block 8 close to the connecting sheet 6 is abutted against the lower end face of the membrane switch main body 1. In this embodiment, the side of the first limiting block 7 close to the connecting sheet 6 is abutted against the side of the face film layer 3 away from the circuit layer 4, and the side of the second limiting block 8 close to the connecting sheet 6 is abutted against the side of the face film layer away from the circuit layer 4.

At this time, the first stopper 7 and the second stopper 8 clamp the membrane switch main body 1, thereby reducing the possibility that the membrane switch main body 1 is separated.

The upper end face of the membrane switch main body 1 is provided with a locking hole 10 in a penetrating mode, and specifically, the locking hole 10 axially penetrates through the surface membrane layer 3, the circuit layer 4 and the back glue layer 5. And one side of the second limiting block 8 close to the first limiting block 7 is provided with an insertion groove 11, and the elastic piece 9 penetrates through the locking hole 10 and is inserted in the insertion groove 11.

At this time, the hole wall of the locking hole 10 limits the movement of the elastic element 9, and the elastic element 9 is inserted into the insertion groove 11, thereby reducing the possibility of generating a gap between the elastic element 9 and the second limiting block 8, and indirectly reducing the possibility of the locking assembly 2 being disengaged from the membrane switch main body 1.

Referring to fig. 3 and 4, the elastic element 9 includes a limiting column 12 disposed on one side of the first limiting block 7 close to the connecting sheet 6, a compression spring 13 disposed between the limiting column 12 and the first limiting block 7, and a limiting cover 14 disposed on one side of the first limiting block 7 far from the connecting sheet 6.

In this embodiment, a containing groove 15 for containing the compression spring 13 is formed on one side of the first limiting block 7 close to the connecting sheet 6, the limiting column 12 is movably inserted in the containing groove 15, and the limiting cover 14 is in threaded connection with one end of the containing groove 15 far away from the connecting sheet 6. At this time, one end of the compression spring 13 is connected with the limit cover 14, and one end of the compression spring 13 far away from the limit cover 14 is connected with the limit post 12.

When locking subassembly 2 is installed to needs, peg graft in storage tank 15 with spacing post 12, place membrane switch main part 1 between first stopper 7 and the spacing piece of second afterwards, when spacing post 12 was located the position of locking hole 10, spacing post 12 was worn to establish locking hole 10 and is pegged graft in inserting groove 11, and then made locking subassembly 2 stable connection on membrane switch main part 1.

One side of the limiting column 12, which is far away from the compression spring 13, is provided with a guide surface 16, and specifically, the guide surface 16 is a hemispherical surface. The limiting column 12 is made of an elastic material, in this embodiment, the elastic material is rubber, so that the limiting column 12 has a certain elasticity.

When the membrane switch main body 1 needs to be placed between the first limiting block 7 and the second limiting block, the guide surface 16 is firstly abutted to the membrane switch main body 1, the membrane switch main body 1 gives a guide force to the limiting column 12 through the guide surface 16, and the guide force forces the limiting column 12 to be inserted into the accommodating groove 15. In addition, the limiting column 12 is made of rubber, so that when the locking assembly 2 is installed, the damage of the limiting column 12 to the membrane switch main body 1 is reduced.

In addition, the outer peripheral surface of the limiting column 12 is integrally formed with a plurality of limiting protrusions 17, for example, two limiting protrusions 17 are arranged in central symmetry with the axis of the limiting column 12 as the center. And two limit protrusions 17 are arranged at one end of the limit post 12 close to the compression spring 13.

One side of the first limiting block 7, which is far away from the connecting sheet 6, is provided with a sliding groove 18 for the limiting protrusion 17 to slide, and the sliding groove 18 is communicated with the accommodating groove 15. Taking two as an example, the two sliding grooves 18 are arranged in a central symmetry manner with the axis of the accommodating groove 15 as the center. And the two sliding grooves 18 correspond to the two limit protrusions 17 one by one.

The limiting cover 14 is in threaded connection with one end of the accommodating groove 15 far away from the second limiting block 8, and a control groove 22 matched with the hexagonal screwdriver is formed in one side of the limiting cover 14 far away from the second limiting block 8. When the locking assembly 2 needs to be assembled, the limiting column 12 and the compression spring 13 are firstly placed in the accommodating groove 15, at this time, the limiting protrusion 17 slides in the sliding groove 18, and finally, one side of the limiting protrusion 17, which is far away from the compression spring 13, is abutted against the bottom of the sliding groove 18.

Then, the limit cover 14 is in threaded connection with the first limit block 7 through the control groove 22, at this time, one end of the compression spring 13 is abutted against one side, close to the second limit block 8, of the limit cover 14, and one end, far away from the limit cover 14, of the compression spring 13 is abutted against one side, far away from the second limit block 8, of the limit column 12.

With continued reference to fig. 3 and 4, a limiting shaft 19 is welded on one side of the limiting cover 14 close to the compression spring 13, a limiting sleeve 20 is welded on one side of the limiting column 12 close to the compression spring 13, a limiting hole 21 is formed on one side of the limiting column 12 close to the compression spring 13, and the limiting hole 21 and a through hole of the limiting sleeve 20 are coaxially formed.

The limiting sleeve 20 is sleeved with one end of the compression spring 13 close to the limiting column 12, one end of the compression spring 13 close to the limiting cover 14 is sleeved on the outer peripheral surface of the limiting shaft 19, and the limiting shaft 19 sequentially penetrates through the compression spring 13 and the limiting hole 21 and is finally connected with the limiting column 12 in a sliding manner.

The movement of the compression spring 13 is limited by the limiting column 12 and the limiting sleeve 20, so that the possibility of the compression spring 13 deviating is reduced, and the connection stability of the compression spring 13, the limiting cover 14 and the limiting column 12 is improved. In addition, the limiting shaft 19 provides a limiting and guiding function for the compression spring 13, so that the possibility of abnormal bending of the compression spring 13 is reduced, and the service life of the compression spring 13 is prolonged.

The implementation principle of the membrane switch in the embodiment of the application is as follows:

after fixing the facial mask layer 3, the circuit layer 4 and the gum layer 5 and forming the membrane switch main body 1 through the double faced adhesive tape, place the membrane switch main body 1 between first stopper 7 and second stopper 8, at this moment, the spigot surface 16 at first with membrane switch main body 1 butt, membrane switch main body 1 gives spacing 12 guiding force through spigot surface 16, this guiding force forces spacing 12 to peg graft in storage tank 15, and the spigot surface 16 is kept away from one side butt of circuit layer 4 with facial mask layer 3 all the time.

When the position of the locking hole 10 is slid by the position-limiting column 12, the position-limiting column 12 penetrates through the locking hole 10 and is inserted into the insertion groove 11 under the restoring action of the compression spring 13, so that the elastic member 9 limits the movement of the membrane switch main body 1, and the possibility that the locking component 2 is separated from the membrane switch main body 1 is reduced.

And the elastic piece 9 is inserted in the insertion groove 11, so that the possibility of forming a gap between the elastic piece 9 and the second limiting sheet is reduced, and the possibility of separating the locking component 2 from the membrane switch main body 1 is further reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A membrane switch, characterized by: including membrane switch main part (1) and a plurality of locking Assembly (2) that set up in the outer peripheral face of membrane switch main part (1), locking Assembly (2) include connection piece (6), set up in first stopper (7) of the one end of connection piece (6) and set up in second stopper (8) of the one end of keeping away from first stopper (7) in connection piece (6), one side that first stopper (7) are close to connection piece (6) and the up end butt of membrane switch main part (1), one side that second stopper (8) are close to connection piece (6) and the lower terminal surface butt of membrane switch main part (1).

2. The membrane switch of claim 1, wherein: the locking assembly (2) further comprises an elastic piece (9) arranged on one side, close to the connecting piece (6), of the first connecting piece (6), a locking hole (10) is formed in the membrane switch main body (1) in a penetrating mode, an insertion groove (11) is formed in the second limiting block (8), and the elastic piece (9) penetrates through the locking hole (10) and is inserted into the insertion groove (11).

3. The membrane switch of claim 2, wherein: the elastic piece (9) comprises a limiting column (12) arranged on one side, close to the connecting sheet (6), of the first limiting block (7) and a compression spring (13) arranged between the limiting column (12) and the first limiting block (7), a containing groove (15) for containing the compression spring (13) is formed in one side, close to the connecting sheet (6), of the first limiting block (7), and the limiting column (12) is movably inserted into the containing groove (15).

4. The membrane switch of claim 3, wherein: the elastic piece (9) further comprises a limiting cover (14) which is connected with the accommodating groove (15) in a threaded mode and is far away from one end of the connecting piece (6), one end of the compression spring (13) is connected with the limiting cover (14), and one end of the compression spring (13) far away from the limiting cover (14) is connected with the limiting column (12).

5. The membrane switch of claim 4, wherein: the outer peripheral face of spacing post (12) is provided with a plurality of spacing archs (17), the groove (18) that slides that supply spacing arch (17) to slide is seted up to one side that connection piece (6) were kept away from in first stopper (7), the groove (18) that slides communicates each other with storage tank (15), just the tank bottom of the groove (18) that slides and one side butt that compression spring (13) were kept away from in spacing arch (17).

6. The membrane switch of claim 4, wherein: spacing lid (14) are close to one side of compression spring (13) and are provided with spacing axle (19), one side that spacing post (12) are close to compression spring (13) is provided with stop collar (20), the outer peripheral face of spacing axle (19) is located to one pot head that compression spring (13) are close to spacing lid (14), the one end that compression spring (13) are close to spacing post (12) is established to stop collar (20) cover.

7. The membrane switch of claim 6, wherein: spacing hole (21) have been seted up to one side that spacing post (12) are close to compression spring (13), spacing hole (21) are coaxial with the through-hole of stop collar (20) to be seted up, compression spring (13) and spacing hole (21) are worn to establish in proper order by spacing axle (19), and spacing axle (19) slide with spacing post (12) and be connected.

8. The membrane switch of claim 4, wherein: and one side of the limiting cover (14) far away from the compression spring (13) is provided with a control groove (22) matched with the hexagonal screwdriver.

9. The membrane switch of claim 3, wherein: and a guide surface (16) is arranged on one side of the limiting column (12) far away from the compression spring (13).

10. The membrane switch of claim 9, wherein: the limiting column (12) is made of elastic materials.