CN210296189U - A membrane switch for cell-phone - Google Patents
A membrane switch for cell-phone Download PDFInfo
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- CN210296189U CN210296189U CN201921640177.2U CN201921640177U CN210296189U CN 210296189 U CN210296189 U CN 210296189U CN 201921640177 U CN201921640177 U CN 201921640177U CN 210296189 U CN210296189 U CN 210296189U
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Abstract
The utility model discloses a membrane switch for cell-phone relates to an electronic components, and its technical scheme main points include substrate, the metal shrapnel of laminating on the substrate and be located the circuit board of metal shrapnel below, metal shrapnel includes pressing the splenium, connecting in pressing the one end of splenium both sides and being located deformation portion and keeping away from the installation department with the circuit board fixed installation department of laminating mutually with the substrate lower surface, one side that deformation portion is close to the installation department sets up to vertical ring, one side that deformation portion is close to pressing the splenium sets up to the tilt ring, vertical ring keep away from the one end of installation department with the tilt ring is connected, the diameter of tilt ring by press splenium to vertical ring direction crescent, the utility model discloses have the effect that provides good pressing and feel.
Description
Technical Field
The utility model relates to an electronic components, more specifically say that it relates to a membrane switch.
Background
The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel, has the advantages of rigorous structure, attractive appearance, good sealing property and moisture resistance, 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.
At present, chinese patent with publication number CN201278323Y discloses a metal film switch for a mobile phone, which is arranged below a mobile phone keyboard and used for conducting keys of the mobile phone, and comprises a substrate and a metal elastic sheet attached to the substrate, wherein the substrate is a plastic film, a groove matched with the metal elastic sheet in shape is arranged on the plastic film, the metal elastic sheet is attached to the groove on the plastic film through a non-setting adhesive, a non-drying adhesive layer is printed on the back surface of the plastic film, and a protective film is attached to the non-drying adhesive layer.
Similar to foretell metal film switch for cell-phone among the prior art, tear the protection film off during the use, paste on the circuit board through the non-setting adhesive layer, its when pressing the substrate, the elastic deformation volume of metal shrapnel can crescent, leads to the metal shrapnel to also crescent to the effort that the finger provided, and is more weak like this to user's finger feedback, causes to press and feels relatively poor, consequently still remains the space of improving.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a membrane switch for cell-phone, its advantage lies in having good pressing and feels.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a membrane switch for cell-phone, includes substrate, the metal shrapnel of laminating on the substrate and the circuit board that is located the metal shrapnel below, the metal shrapnel includes pressing the splenium, connecting in the deformation portion of pressing the splenium both sides and being located the deformation portion and keeping away from the one end of installation department and with the fixed installation department of circuit board with laminating mutually with the substrate lower surface, one side that the deformation portion is close to the installation department sets up to vertical ring, one side that the deformation portion is close to pressing the splenium sets up to the tilt ring, the vertical ring keep away from the one end of installation department with the tilt ring is connected, the diameter of tilt ring by according.
By adopting the technical scheme, when the membrane switch is pressed, the pressing part moves downwards to enable the deformation part to generate deformation, one end of the vertical ring close to the inclined ring expands outwards and generates elastic deformation, the inclined ring is continuously compressed to generate bending deformation, and the resilience force is increased along with the increase of the pressing degree; after the inclination ring is wholly sunk into the vertical ring, the vertical ring retracts inwards, the inclination ring recovers to deform, the resilience force at the moment is reduced along with the increase of the pressing degree, and therefore the membrane switch can have good section falling type pressing hand feeling.
The utility model discloses further set up to: the deformation portion is provided with the elastic arm along its axis direction symmetry on the outer wall, the elastic arm includes kink and the connecting portion that are located the kink both ends, all be provided with the joint piece along its axis direction on slope ring and the vertical ring, set up on the connecting portion with the joint groove of joint piece looks joint.
Through adopting above-mentioned technical scheme, connect the elastic arm on deformation portion outer wall, can improve the joint strength of slope ring and vertical ring to avoid leading to membrane switch inefficacy because of slope ring and vertical ring junction fracture.
The utility model discloses further set up to: the kink is the arc, the junction of connecting portion and kink is the circular arc transition.
By adopting the technical scheme and the arc design, the structural strength of the bending part can be enhanced, so that the service life of the elastic arm is prolonged; the design of circular arc transition can improve the joint strength of connecting portion and kink to the life of extension elastic arm.
The utility model discloses further set up to: and the lower end of the mounting part extends downwards to form a metal block corresponding to the position of the contact on the circuit board.
Through adopting above-mentioned technical scheme, the setting of metal block can shorten the removal stroke of metal shrapnel, reduces the crooked deformation volume of metal shrapnel to the life of extension metal shrapnel.
The utility model discloses further set up to: and a metal sheet is arranged on the circuit board corresponding to the metal block.
Through adopting above-mentioned technical scheme, the setting of sheetmetal can further shorten the removal stroke of metal shrapnel, reduces the crooked deformation volume of metal shrapnel, further prolongs the life of metal shrapnel.
The utility model discloses further set up to: the metal sheet is an arc sheet with the wave crest facing the metal block.
Through adopting above-mentioned technical scheme, the arc piece is higher for the rectangle piece, its overall structure intensity, and life is longer.
The utility model discloses further set up to: the pressing part, the deformation part and the installation part are of an integrally formed structure.
Through adopting above-mentioned technical scheme, integrated into one piece presses splenium, deformation portion and installation department, for weld forming's metal shrapnel, and bulk strength is higher, and life is longer.
The utility model discloses further set up to: the joint of the vertical ring and the inclined ring is in arc transition.
Through adopting above-mentioned technical scheme, the setting of circular arc transition can improve the joint strength between vertical ring and the tilt ring, avoids the fracture of the junction of vertical ring and tilt ring after long-time the use.
To sum up, the utility model has the advantages of it is following:
1. when the membrane switch is pressed, the pressing part moves downwards to enable the deformation part to generate deformation, one end of the vertical ring, which is close to the inclined ring, expands outwards and generates elastic deformation, the inclined ring is continuously compressed to generate bending deformation, and the resilience force is increased along with the increase of the elastic deformation quantity; when the inclined ring is wholly sunk into the vertical ring, the vertical ring retracts to the inner side, so that the elastic deformation of the vertical ring is reduced, and the resilience force is continuously reduced along with the reduction of the elastic deformation, so that the membrane switch has good pressing hand feeling;
2. the arrangement of the elastic arm can enhance the connection strength of the inclined ring and the vertical ring, and avoid the failure of the membrane switch caused by the fracture of the connection part of the inclined ring and the vertical ring;
3. through setting up the sheetmetal, can shorten metal shrapnel's removal stroke, reduce metal shrapnel's crooked deformation volume, prolong metal shrapnel's life.
Drawings
FIG. 1 is a schematic sectional view of the present embodiment;
fig. 2 is a schematic diagram of a partial explosion when the metal dome is connected to the elastic arm in this embodiment.
Description of reference numerals: 1. a substrate; 2. a metal spring sheet; 21. a pressing part; 22. a deformation section; 23. an installation part; 221. a vertical ring; 222. an inclined ring; 3. a circuit board; 4. a resilient arm; 41. a connecting portion; 42. a bending section; 5. a clamping groove; 6. a clamping block; 7. a metal block; 8. a metal sheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a membrane switch for cell-phone, as shown in fig. 1, including substrate 1, the laminating is at metal shrapnel 2 on substrate 1 and is located the circuit board 3 of metal shrapnel 2 below, metal shrapnel 2 includes the splenium 21 of laminating mutually with substrate 1 lower surface, connect in the deformation portion 22 of splenium 21 both sides and be located the one end that deformation portion 22 kept away from installation department 23 and with the fixed installation department 23 of circuit board 3, splenium 21, deformation portion 22 and installation department 23 are integrated into one piece, one side that deformation portion 22 is close to installation department 23 sets up to vertical ring 221, one side that deformation portion 22 is close to splenium 21 sets up to slope ring 222, the one end that vertical ring 221 kept away from installation department 23 is connected with slope ring 222, the diameter of slope ring 222 is increased gradually to vertical ring 221. Therefore, when the membrane switch is pressed, the pressing part 21 moves downwards to deform the deformation part 22, and when the inclined ring 222 is positioned above the vertical ring 221, the resilience force increases along with the increase of the pressing degree; when the inclined ring 222 is sunk into the vertical ring 221, the repulsive force is reduced as the pressing degree increases, thereby generating a step-off feeling.
Further, in order to enhance the connection strength between the vertical ring 221 and the inclined ring 222, the connection portion between the vertical ring 221 and the inclined ring 222 in this embodiment is in a circular arc transition.
As shown in fig. 1 and fig. 2, two elastic arms 4 are symmetrically installed on the outer wall of the deformation portion 22 along the axial direction thereof, each elastic arm 4 includes a bending portion 42 and a connecting portion 41 located at two ends of the bending portion 42, the bending portion 42 is arc-shaped, and the connecting portion 41 and the bending portion 42 form an arc transition; the inclined ring 222 and the vertical ring 221 are both provided with a clamping block 6 along the axial direction thereof, and the connecting portion 41 is provided with a clamping groove 5 clamped with the clamping block 6. The elastic arm 4 is respectively clamped with the inclined ring 222 and the vertical ring 221, so that the connection strength of the inclined ring 222 and the vertical ring 221 can be enhanced, and the failure of the membrane switch caused by the fracture of the connection part of the inclined ring 222 and the vertical ring 221 after long-time use is avoided.
As shown in fig. 1, the lower end of the mounting portion 23 extends downward to form a metal block 7 corresponding to the contact position on the circuit board 3, and a metal sheet 8 having a wave crest facing the metal block 7 is fixed on the circuit board 3 facing one side of the metal spring piece 2 and located at the corresponding position of the metal block 7. When pressing membrane switch, behind metal block 7 and the sheetmetal 8 contact, sheetmetal 8 receives the extrusion of metal block 7 and produces deformation, provides the resilience force for metal block 7, makes metal shrapnel 2 kick-back, provides good pressing and feels to metal block 7 and sheetmetal 8 can shorten metal shrapnel 2's removal stroke, reduce metal shrapnel 2's deformation volume, thereby prolong metal shrapnel 2's life.
The utility model discloses a working process and beneficial effect as follows: when the membrane switch is pressed, the pressing part 21 moves downwards, so that the deformation part 22 generates deformation, one end of the vertical ring 221, which is close to the inclined ring 222, expands outwards and generates elastic deformation, the inclined ring 222 is compressed to generate bending deformation, and the resilience force is increased along with the increase of the pressing degree; when the inclined ring 222 is wholly sunk into the vertical ring 221, the vertical ring 221 retracts inwards, the inclined ring 222 recovers deformation, the resilience force is reduced along with the increase of the pressing degree, and therefore the membrane switch has good step-down pressing hand feeling.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The utility model provides a membrane switch for cell-phone, includes substrate (1), laminating metal shrapnel (2) on substrate (1) and circuit board (3) that are located metal shrapnel (2) below, its characterized in that: metal shrapnel (2) including pressing portion (21) with laminating mutually substrate (1) lower surface, connect in deformation portion (22) pressing portion (21) both sides and be located deformation portion (22) keep away from the one end of installation department (23) and with circuit board (3) fixed installation department (23), one side that deformation portion (22) are close to installation department (23) sets up to vertical ring (221), one side that deformation portion (22) are close to pressing portion (21) sets up to slope ring (222), the one end that installation department (23) were kept away from to vertical ring (221) with slope ring (222) are connected, the diameter of slope ring (222) by pressing portion (21) to vertical ring (221) direction crescent.
2. The membrane switch for cellular phone according to claim 1, wherein: deformation portion (22) outer wall is gone up and is provided with elastic arm (4) along its axis direction symmetry, elastic arm (4) include kink (42) and connecting portion (41) that are located kink (42) both ends, all be provided with joint piece (6) along its axis direction on slope ring (222) and vertical ring (221), seted up on connecting portion (41) with joint groove (5) of joint piece (6) looks joint.
3. The membrane switch for cellular phone according to claim 2, wherein: the bending part (42) is arc-shaped, and the connecting part (41) and the bending part (42) are in arc transition.
4. The membrane switch for cellular phone according to claim 1, wherein: and a metal block (7) corresponding to the position of the upper contact of the circuit board (3) extends downwards from the lower end of the mounting part (23).
5. The membrane switch for cellular phone according to claim 4, wherein: and a metal sheet (8) is arranged on the circuit board (3) corresponding to the metal block (7).
6. The membrane switch for cellular phone according to claim 5, wherein: the metal sheet (8) is an arc sheet with the wave crest facing the metal block (7).
7. The membrane switch for cellular phone according to claim 1, wherein: the pressing part (21), the deformation part (22) and the mounting part (23) are of an integrally formed structure.
8. The membrane switch for cellular phone according to claim 1, wherein: the joint of the vertical ring (221) and the inclined ring (222) is in arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640177.2U CN210296189U (en) | 2019-09-28 | 2019-09-28 | A membrane switch for cell-phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640177.2U CN210296189U (en) | 2019-09-28 | 2019-09-28 | A membrane switch for cell-phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210296189U true CN210296189U (en) | 2020-04-10 |
Family
ID=70065927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921640177.2U Active CN210296189U (en) | 2019-09-28 | 2019-09-28 | A membrane switch for cell-phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210296189U (en) |
-
2019
- 2019-09-28 CN CN201921640177.2U patent/CN210296189U/en active Active
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