CN210489487U - Spring sheet type membrane switch - Google Patents
Spring sheet type membrane switch Download PDFInfo
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- CN210489487U CN210489487U CN201922051752.1U CN201922051752U CN210489487U CN 210489487 U CN210489487 U CN 210489487U CN 201922051752 U CN201922051752 U CN 201922051752U CN 210489487 U CN210489487 U CN 210489487U
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Abstract
The utility model belongs to the technical field of film switches, in particular to a spring sheet type film switch, which comprises a panel layer, wherein the upper side of the panel layer is provided with a pressing key, the panel layer is sequentially provided with an upper insulating layer, a metal spring sheet, a circuit board, a lower insulating layer and a bottom layer from top to bottom, the upper side of the circuit board is provided with an insulating table, the inner part of the insulating table is provided with a chute, the upper end of the metal spring sheet is provided with a first metal stop block, the lower end of the metal spring sheet is provided with a second metal stop block, the upper side of the insulating table is provided with a first limit groove, the lower side of the insulating table is provided with a second limit groove, the middle part of the metal spring sheet is provided with an upper contact block, the circuit board is provided with a lower contact block, the circuit board is provided with an insulating sleeve, the insulating sleeve is provided, influence the use, the shell fragment performance of bounceing after long-time use becomes productive simultaneously, makes the problem of switch inefficacy.
Description
Technical Field
The utility model belongs to the technical field of the membrane switch, concretely relates to shell fragment formula membrane switch.
Background
The elastic sheet type membrane switch is a light-touch on-type normally open switch, the upper and lower contacts of the elastic sheet type membrane switch are in an off state under normal conditions, when the switch is pressed down, the contact of the upper circuit deforms downwards and is in contact conduction with the polar plate of the lower circuit, after the finger is loosened, the contact of the upper circuit rebounds, the circuit is disconnected, the elastic sheet type membrane switch has the characteristics of rigorous structure, attractive appearance, good sealing performance, moisture resistance, long service life and the like, and is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, the automobile industry, intelligent toys, household appliances and the like.
Present shell fragment formula membrane switch is because need often press when using, when the shell fragment pushes down, both sides can form curly, long-term use both sides can cause curling deformation, the influence is used, and metal shrapnel does not have limit structure, when the pressure of pressing metal shrapnel is too big, contact block and contact block down pressure when contacting is too big on making, contact block and lower contact block take place deformation on causing, influence the life of switch, often press simultaneously and make the shell fragment bounce behind the recessed, the performance deterioration that the shell fragment bounced after long-term use, lead to the switch to become invalid.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model aims at providing a shell fragment formula membrane switch to solve current shell fragment formula membrane switch and take place to curl deformation and deformation when pressing easily and too big, influence the use, the shell fragment plays the performance transformation product after long-time the use simultaneously, makes the problem that the switch became invalid.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
a spring sheet type membrane switch comprises a panel layer, wherein a pressing key is arranged on the upper side of the panel layer, an upper insulating layer, a metal spring sheet, a circuit board, a lower insulating layer and a bottom layer are sequentially arranged on the panel layer from top to bottom, insulating tables are arranged at the left and right ends of the upper side of the circuit board, sliding grooves matched with the two sides of the metal spring sheet are formed in the two insulating tables, first metal stop blocks are arranged at the left and right sides of the upper end of the metal spring sheet, second metal stop blocks are arranged at the left and right sides of the lower end of the metal spring sheet, first limiting grooves matched with the first metal stop blocks are formed in the upper side of the insulating tables, second limiting grooves matched with the second metal stop blocks are formed in the lower side of the insulating tables, an upper contact block is arranged in the middle of the metal spring sheet, a lower contact block matched with the upper contact block is arranged on, the bottom of the insulating sleeve is fixedly connected with a spring, and the spring is fixedly connected with the bottom of the insulating ejector rod.
By adopting the technical scheme of the utility model, the upper insulating layer and the lower insulating layer can play an insulating role, and accidental electric shock is avoided; the pressing key is pressed downwards to enable the metal elastic sheet to move downwards, meanwhile, two sides of the metal elastic sheet slide in the sliding groove, bending of two sides of the metal elastic sheet is avoided, the metal elastic sheet is pressed downwards through matching between the first metal stop block and the first limiting groove of the insulating table and matching between the second metal stop block and the second limiting groove of the insulating table, when the upper contact block is in contact with the lower contact block of the circuit board, two sides of the metal elastic sheet just move to the farthest ends of the first limiting groove and the second limiting groove respectively, downward pressing cannot be continued, and excessive pressure between the upper contact block and the lower contact block after contact is avoided when pressing force is excessive, so that the upper contact block and the lower contact block deform, and the service life is prolonged; through the matching among the insulating sleeve, the spring and the insulating ejector rod, when the metal elastic sheet is concave under external force, the insulating ejector rod can be retracted into the insulating sleeve by overcoming the elasticity of the spring, when the metal elastic sheet is not under the force, the spring is elastically bounced through the elastic matching of the spring and the metal elastic sheet, the function of assisting the metal elastic sheet to bounce is achieved, the service life of the metal elastic sheet can be prolonged, and the use quality of the switch is ensured; the surface of the switch can be protected by the panel layer and the bottom layer, and the switch is more attractive in appearance and has hand feeling; the utility model provides a current shell fragment formula membrane switch take place to curl when pressing easily and deformation is too big, influence the use, and the shell fragment plays the performance transformation product after using for a long time simultaneously, makes the problem of switch inefficacy.
Further inject, panel layer downside still is equipped with first adhesive linkage, panel layer downside is through first adhesive linkage and last insulating layer and insulating stage upside fixed connection. Therefore, the fixing mode among the panel layer, the upper insulating layer and the insulating table is simple, and the assembly is convenient.
Further inject, the insulating stage downside is equipped with the second adhesive linkage, the insulating stage passes through second adhesive linkage and circuit board upside fixed connection. Therefore, the insulating table and the circuit board are fixed simply and are convenient to assemble.
Further limit, the lower side of the lower insulating layer is provided with a third bonding layer, and the lower insulating layer is fixedly connected with the bottom layer through the third bonding layer. Therefore, the lower insulating layer and the bottom layer are fixed simply and are convenient to assemble.
Further limiting, a spherical jacking block is arranged on the upper side of the insulating jacking rod. By the structure, the top of the insulating ejector rod can better adapt to the surface of the metal elastic sheet to jack up the metal elastic sheet.
Further inject, two the insulation station all is equipped with a plurality of air vents that transversely set up. With such a structure, the internal gas can be discharged through the vent hole when the switch is pressed, and the pressing is easy.
Compared with the prior art, the utility model has the following advantages:
1. through setting up the spout, when making the metal shrapnel atress push down, the metal shrapnel both sides can not take place to curl, set up first metal dog simultaneously, second metal dog, first spacing groove and second spacing groove, can make the metal shrapnel atress push down make on the touch multitouch with touch multitouch contact back down, can't continue to push down promptly, it is too big to have avoided the contact pressure between touch multitouch and the touch multitouch down, touch multitouch and touch multitouch produce deformation down on the messenger, guarantee the life of switch result of use and switch.
2. The insulating sleeve is connected with the insulating ejector rod through the spring, when the metal elastic sheet rebounds without stress, the spring drives the insulating ejector rod to bounce in cooperation with the rebounding elasticity of the metal elastic sheet, the metal elastic sheet rebounding assisting effect is achieved, and the service life of the metal elastic sheet is prolonged.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
fig. 1 is a schematic structural diagram of an embodiment of a leaf spring type membrane switch of the present invention;
fig. 2 is an enlarged schematic view of a structure at a position a of an embodiment of the dome-type membrane switch of the present invention;
the main element symbols are as follows:
the panel comprises a panel layer 1, a pressing key 11, an upper insulating layer 2, a metal elastic sheet 3, a first metal stopper 31, a second metal stopper 32, an upper contact block 33, a circuit board 4, an insulating table 41, a sliding groove 411, a first limiting groove 412, a second limiting groove 413, a vent hole 414, a lower contact block 42, an insulating sleeve 43, an insulating ejector rod 431, a spherical top block 4311, a spring 432, a lower insulating layer 5, a bottom layer 6, a first bonding layer 71, a second bonding layer 72 and a third bonding layer 73.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
As shown in figures 1 and 2, the utility model relates to a spring sheet type membrane switch, which comprises a panel layer 1, a press key 11 is arranged on the upper side of the panel layer 1, the panel layer 1 is provided with an upper insulating layer 2, a metal spring sheet 3, a circuit board 4, a lower insulating layer 5 and a bottom layer 6 from top to bottom in sequence, the left and right ends of the upper side of the circuit board 4 are provided with insulating tables 41, the insides of the two insulating tables 41 are provided with chutes 411 matched with the two sides of the metal spring sheet 3, the left and right sides of the upper end of the metal spring sheet 3 are provided with first metal stoppers 31, the left and right sides of the lower end of the metal spring sheet 3 are provided with second metal stoppers 32, the upper side of the insulating table 41 is provided with a first limit groove 412 matched with the first metal stopper 31, the lower side of the insulating table 41 is provided with a second limit groove 413 matched with the second metal stopper 32, the middle part, the circuit board 4 is symmetrically provided with two insulating sleeves 43, the insulating sleeves 43 are sleeved with insulating ejector rods 431, the bottoms of the insulating sleeves 43 are fixedly connected with springs 432, and the springs 432 are fixedly connected with the bottoms of the insulating ejector rods 431.
By adopting the technical scheme of the utility model, the upper insulating layer 2 and the lower insulating layer 5 are arranged to play an insulating effect and avoid accidental electric shock; the pressing key 11 is pressed downwards to make the metal elastic sheet 3 downwards, meanwhile, two sides of the metal elastic sheet 3 slide in the sliding slot 411 to avoid bending of two sides of the metal elastic sheet 3, through the cooperation between the first metal stop 31 and the first limit slot 412 of the insulating table 41 and the cooperation between the second metal stop 32 and the second limit slot 413 of the insulating table 41, when the metal elastic sheet 3 is not stressed, the first metal stop 31 and the second metal stop 32 on two sides of the metal elastic sheet 3 just move to the proximal ends of the first limit slot 412 and the second limit slot 413 respectively, when the metal elastic sheet 3 is pressed downwards by force, the upper contact block 33 contacts with the lower contact block 42 of the circuit board 4, the first metal stop 31 and the second metal stop 32 on two sides of the metal elastic sheet 3 just move to the distal ends of the first limit slot 412 and the second limit slot 413 respectively, so that the downward pressing can not be continued, when the pressing force is too large, the pressure between the upper contact block 33 and the lower contact block 42 is too large, the upper contact block 33 and the lower contact block 42 are deformed, so that the service life of the switch is prolonged; through the matching among the insulating sleeve 43, the spring 432 and the insulating ejector rod 431, when the metal elastic sheet 3 is concave under external force, the insulating ejector rod 431 overcomes the elasticity of the spring 432 and is taken into the insulating sleeve 43, the spring 432 is elastically bounced through the elastic matching of the spring 432 and the metal elastic sheet 3, the function of assisting the metal elastic sheet 3 to bounce is achieved, the service life of the metal elastic sheet 3 can be prolonged, and the use quality of the switch is ensured; the panel layer 1 and the bottom layer 6 can protect the surface of the switch, and simultaneously, the switch is more attractive in appearance and has hand feeling; the utility model provides a current shell fragment formula membrane switch take place to curl when pressing easily and deformation is too big, influence the use, and the shell fragment plays the performance transformation product after using for a long time simultaneously, makes the problem of switch inefficacy.
Preferably, a first adhesive layer 71 is further disposed on the lower side of the panel layer 1, and the lower side of the panel layer 1 is fixedly connected to the upper insulating layer 2 and the upper side of the insulating table 41 through the first adhesive layer 71. Thus, the fixing manner between the panel layer 1 and the upper insulating layer 2 and the insulating stage 41 is simplified, and the assembly is facilitated. Actually, other methods may be used as appropriate, and the fixing method between the panel layer 1, the upper insulating layer 2, and the insulating base 41 may be simplified.
Preferably, a second adhesive layer 72 is provided under the insulating stage 41, and the insulating stage 41 is fixedly connected to the upper side of the wiring board 4 via the second adhesive layer 72. Thus, the fixing mode between the insulation table 41 and the circuit board 4 is simple, and the assembly is convenient. Actually, other methods may be used as appropriate, and the fixing method between the insulating base 41 and the wiring board 4 may be simplified.
Preferably, a third adhesive layer 73 is disposed under the lower insulating layer 5, and the lower insulating layer 5 is fixedly connected to the bottom layer 6 through the third adhesive layer 73. Thus, the fixing mode between the lower insulating layer 5 and the bottom layer 6 is simple, and the assembly is convenient. In fact, other methods may be used as appropriate, and the fixing method between the lower insulating layer 5 and the underlayer 6 is simplified.
Preferably, the upper side of the insulating mandril 431 is provided with a spherical top block 4311. With the structure, the top of the insulating ejector rod 431 can better adapt to the surface of the metal elastic sheet 3 to jack up the metal elastic sheet 3. In fact, other structures can be considered according to the situation, so that the insulating ejector rod 431 can better eject the metal elastic sheet 3.
Preferably, both insulating blocks 41 are provided with a plurality of laterally disposed vent holes 414. With such a structure, when the switch is pressed, the gas inside can be discharged through the vent hole 414, and the pressing is eased. In fact, other configurations may be used as appropriate, and the gas inside can be discharged when the switch is pushed.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A shell fragment formula membrane switch, includes panel layer (1), its characterized in that: the pressing key (11) is arranged on the upper side of the panel layer (1), the panel layer (1) is sequentially provided with an upper insulating layer (2), a metal elastic sheet (3), a circuit board (4), a lower insulating layer (5) and a bottom layer (6) from top to bottom, the left end and the right end of the upper side of the circuit board (4) are respectively provided with an insulating table (41), the inner parts of the two insulating tables (41) are respectively provided with a sliding groove (411) matched with the two sides of the metal elastic sheet (3), the left side and the right side of the upper end of the metal elastic sheet (3) are respectively provided with a first metal stop block (31), the left side and the right side of the lower end of the metal elastic sheet (3) are respectively provided with a second metal stop block (32), the upper side of the insulating table (41) is provided with a first limiting groove (412) matched with the first metal stop block (31), the, contact block (33) are equipped with in metal shrapnel (3) middle part, circuit board (4) be equipped with last contact block (33) assorted lower contact block (42), circuit board (4) symmetry is equipped with two insulation support (43), insulation support (43) cover is equipped with insulating ejector pin (431), insulation support (43) bottom fixedly connected with spring (432), spring (432) and insulating ejector pin (431) bottom fixed connection.
2. The switch of claim 1, wherein: the lower side of the panel layer (1) is further provided with a first bonding layer (71), and the lower side of the panel layer (1) is fixedly connected with the upper side of the upper insulating layer (2) and the upper side of the insulating table (41) through the first bonding layer (71).
3. The switch of claim 1, wherein: and a second bonding layer (72) is arranged on the lower side of the insulating table (41), and the insulating table (41) is fixedly connected with the upper side of the circuit board (4) through the second bonding layer (72).
4. The switch of claim 1, wherein: and a third bonding layer (73) is arranged on the lower side of the lower insulating layer (5), and the lower insulating layer (5) is fixedly connected with the bottom layer (6) through the third bonding layer (73).
5. The switch of claim 1, wherein: and a spherical top block (4311) is arranged on the upper side of the insulating ejector rod (431).
6. The switch of claim 1, wherein: and a plurality of transversely arranged vent holes (414) are formed in each of the two insulation tables (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051752.1U CN210489487U (en) | 2019-11-25 | 2019-11-25 | Spring sheet type membrane switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051752.1U CN210489487U (en) | 2019-11-25 | 2019-11-25 | Spring sheet type membrane switch |
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| Publication Number | Publication Date |
|---|---|
| CN210489487U true CN210489487U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922051752.1U Active CN210489487U (en) | 2019-11-25 | 2019-11-25 | Spring sheet type membrane switch |
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| Country | Link |
|---|---|
| CN (1) | CN210489487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114694996A (en) * | 2020-12-29 | 2022-07-01 | 重庆达方电子有限公司 | Keyboard device |
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2019
- 2019-11-25 CN CN201922051752.1U patent/CN210489487U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114694996A (en) * | 2020-12-29 | 2022-07-01 | 重庆达方电子有限公司 | Keyboard device |
| CN114694996B (en) * | 2020-12-29 | 2023-11-14 | 重庆达方电子有限公司 | keyboard device |
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