CN203799922U - Light touch switch - Google Patents
Light touch switch Download PDFInfo
- Publication number
- CN203799922U CN203799922U CN201420079969.8U CN201420079969U CN203799922U CN 203799922 U CN203799922 U CN 203799922U CN 201420079969 U CN201420079969 U CN 201420079969U CN 203799922 U CN203799922 U CN 203799922U
- Authority
- CN
- China
- Prior art keywords
- leaf spring
- partition
- circuit board
- printed circuit
- apex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a light touch switch enabling a telescoping part to fully deform in a way of being corresponding to elastic deformation of a plate spring so that a switch function of the plate spring can be exactly performed. The light touch switch comprises a printed circuit board on which multiple fixed connecting points are formed; the dome-shaped plate spring which is arranged on the printed circuit board so that a peripheral edge part is enabled to be contacted with the fixed connecting points of two sides and a vertex part is enabled to be arranged at the central fixed connecting points; a separating sheet which is arranged on the printed circuit board so that a space part used for accommodating the plate spring is formed; and a protective sheet which is adhered on the separating sheet and the vertex part of the plate spring via an adhesion agent so that the plate spring is fixed in the space part of the separating sheet. A non-adhesion part which is adhered without using the adhesion agent is formed on the protective sheet which is adhered on the separating sheet via the adhesion agent, and the non-adhesion part is formed on multiple positions along the edge of the plate spring. Besides, a wrinkling part is formed on the protective sheet and corresponding to elastic deformation generated via pressurizing the vertex part of the plate spring so that telescoping deformation is enabled to be smooth.
Description
Technical field
The utility model relates to touch-switch, in more detail, relates to the touch-switch using on portable terminal device or e-machine switching device.
Background technology
Conventionally, touch-switch is as illustrated in Fig. 1, and its structure comprises: printed circuit board (PCB), has formed multiple fixed contact 1a, 1b above; The leaf spring (metal dome) 2 of domed shape, is arranged on described printed circuit board (PCB) 1, and peripheral edge portion is contacted with both sides fixed contact 1b, and apex 2a is positioned on central fixed contact 1a; Partition 3, has formed the spatial portion 3a that accommodates described leaf spring 2; Screening glass 4, by adhesive 4a be attached to described partition 3 above and the apex 2a of leaf spring 2, leaf spring 2 is maintained in the spatial portion 3a of partition 3.
Therefore, while applying downforce to the apex 2a of leaf spring 2, illustrated in Fig. 2 a, the apex 2a that makes leaf spring 2 strain downwards, the fixed contact 1a of apex 2a contact print circuit board 1 central authorities of leaf spring 2, and remove when downforce the apex 2a elastic recovery of leaf spring 2, the apex 2a of leaf spring 2 isolates from the fixed contact of the apex 2a central authorities of leaf spring 2, thereby can carry out the function of the switch of portable terminal device or e-machine.
As described in the touch-switch of running, as shown in Figure 2 a, when the apex 2a of leaf spring 2 produces strain downwards, corresponding to this, be attached to the apex 2a of leaf spring 2 and the screening glass 4 of partition 3 and also together produce mobile distortion downwards.Therefore, the material of screening glass 4 is used can have the to a certain degree material of retractility to external force, for example, uses the film of synthetic resin material to make.
But; the trend toward miniaturization of portable terminal device or e-machine; the size of the leaf spring 2 of touch-switch is also more and more less; as Fig. 1; in screening glass 4 except adhesive portion a, b telescopic part;; the adhesive portion a of partition 3 is also shorter and shorter to length (pars contractilis) L between the adhesive portion b of leaf spring 2; when compression motion that leaf spring 2 is implemented; if the length of pars contractilis L is insufficient; as Fig. 2 b, less because of the deflection of pars contractilis L, produce that the apex 2a of leaf spring 2 cannot contact central fixed contact 1a and the problem that cannot realize switching function.
Utility model content
(technical problem that will solve)
The purpose of this utility model is; provide a kind of touch-switch in order to solve described problem points; even along with the size of leaf spring is more and more less; the pars contractilis length of screening glass is shorter; also strain that can corresponding leaf spring; pars contractilis can be fully out of shape, can definitely carry out the switching function of leaf spring.
(means of dealing with problems)
In order to reach described object, the touch-switch that the utility model provides is characterised in that, comprising: printed circuit board (PCB), has formed multiple fixed contacts above; The leaf spring of domed shape, is arranged on described printed circuit board (PCB), and peripheral edge portion is contacted with both sides fixed contact, and apex is positioned on central fixed contact; Partition, is positioned on described printed circuit board (PCB), has formed the spatial portion of accommodating described leaf spring; Screening glass, by adhesive attachment arrive described partition above and the apex of leaf spring, leaf spring is fixed in the spatial portion of partition; On the screening glass above described partition by adhesive attachment, form not by the non-facies posterior hepatis of adhesive attachment, and along the edge of described leaf spring, formed in many places.
And the touch-switch that the utility model provides is characterised in that, comprising: printed circuit board (PCB), has formed multiple fixed contacts above; The leaf spring of domed shape, is arranged on described printed circuit board (PCB), and peripheral edge portion is contacted with both sides fixed contact, and apex is positioned on central fixed contact; Partition, is positioned on described printed circuit board (PCB), has formed the spatial portion of accommodating described leaf spring; Intermediate plate, by adhesive attachment arrive described partition above; Screening glass, by adhesive attachment arrive described intermediate plate above and the apex of leaf spring, leaf spring is fixed in the spatial portion of partition; And on the screening glass above described partition by adhesive attachment, form not by the non-facies posterior hepatis of adhesive attachment, and along the edge of described leaf spring, formed in many places.
The touch-switch that the utility model provides is characterised in that, wherein one side or the both sides formation of described non-facies posterior hepatis in the length direction of leaf spring and the edge of amplitude direction.
And the touch-switch that the utility model provides is characterised in that, has formed pleated portions on described screening glass, the apex of the described leaf spring of corresponding pressurization and the strain that produces makes dilatation become smooth and easy.
The touch-switch that the utility model provides is characterised in that; described pleated portions has formed multiple linear grooves on screening glass; linear pattern groove is speckle form; or on screening glass, formed the groove with the edge part of leaf spring with identical apperance, form at certain intervals multiple or on screening glass, implement embossing processing and form.
(effect of utility model)
According to the utility model with described special construction; along the edge of leaf spring; form in many places by adhesive attachment and arrive the screening glass above partition or do not arrive the non-facies posterior hepatis of intermediate plate by adhesive attachment; while making the apex of leaf spring produce strain by pressurization; the pars contractilis deflection of the screening glass that can increase corresponding correspondence with it and be out of shape; even if it is more and more less that the size of leaf spring becomes; in the very short situation of the pars contractilis length of screening glass, also can definitely carry out the switching function of leaf spring.
And in the utility model, along with having formed pleated portions on the pars contractilis of screening glass, the strain of corresponding leaf spring, more can increase the pars contractilis deflection of screening glass, therefore more can definitely carry out the valuable utility model of the switching function of leaf spring.
Brief description of the drawings
Fig. 1 is the profile that presents traditional touch-switch.
Fig. 2 a and Fig. 2 b are the profiles that presents the operate condition of traditional touch-switch.
Fig. 3 is according to the plane graph of the touch-switch of the 1st embodiment of the present utility model.
Fig. 4 is the A-A line profile of Fig. 3.
Fig. 5 is according to the profile of the operate condition of the touch-switch of the 1st embodiment of the present utility model.
Fig. 6 a and Fig. 6 b are the plane graphs that presents the variation of the non-facies posterior hepatis of screening glass in the 1st embodiment of the present utility model.
Fig. 7 is according to the profile of the touch-switch of the 2nd embodiment of the present utility model.
Fig. 8 is according to the profile of the operate condition of the touch-switch of the 2nd embodiment of the present utility model.
Fig. 9 a and Fig. 9 b are plane graph and the ground plans that presents the attachment state of the intermediate plate between partition and screening glass in the 2nd embodiment of the present utility model.
Figure 10 is the plane graph presenting according to the touch-switch of the 3rd embodiment of the present utility model.
Figure 11 a and Figure 11 b are the B-B line profiles of Figure 10, are the profiles of the operate condition of touch-switch.
Figure 12 a and Figure 12 b are the plane graphs that presents the different distortion example of pleated portions in the 3rd embodiment.
Figure 13 a and Figure 13 b are according to the profile of the operate condition of the touch-switch of the 4th embodiment of the present utility model.
The explanation of symbol
11: printed circuit board (PCB) 12: leaf spring
13: partition 14: screening glass
14a, 15a: adhesive 14b, 15b: non-facies posterior hepatis
16: pleated portions L: pars contractilis
Embodiment
Describe with reference to the accompanying drawings preferred embodiment of the present utility model in detail below.
Fig. 3 and Fig. 4 are the plane graphs presenting according to the touch-switch of the 1st embodiment of the present utility model, as shown in the figure, comprise according to the touch-switch of the 1st embodiment of the present utility model: printed circuit board (PCB) 11, has formed multiple fixed contact 11a, 11b above; The leaf spring 12 of domed shape, is arranged on described printed circuit board (PCB) 11.
The peripheral edge portion of described leaf spring 12 contacts with the both sides fixed contact 11b of printed circuit board (PCB) 11, apex 12a is positioned on central fixed contact 11a, by pressurization apex, 12a makes its strain downwards, or pressurize and make it contact or isolate with central fixed contact 11a by releasing, thereby carry out switching function.
And, on printed circuit board (PCB) 11, there is partition 13.In partition 13, formed the spatial portion 13a that accommodates leaf spring 12, according to the screening glass 14 above and above the apex 12a of leaf spring 12 that is attached to partition 13 by adhesive 14a, leaf spring 12 is fixed in the spatial portion of partition 13.
At this moment, be attached to by adhesive 14a on the screening glass 14 above of described partition 13, formed the non-facies posterior hepatis 14b not adhering to by adhesive 14a, and along the edge of described leaf spring 12, form in many places.
For example, non-facies posterior hepatis 14b as shown in Figure 3, the both sides that are preferably in the length direction of leaf spring 12 and the edge of amplitude direction form, and illustrated in Fig. 6 a and 6b, non-facies posterior hepatis 14b also can wherein forming in the edge of the length direction of leaf spring 12 and amplitude direction on one side.
Have this structure according to the touch-switch of the 1st embodiment of the present utility model; as Fig. 4 and Fig. 5; if the apex 12a of pressurization or releasing pressurization leaf spring 12; make its strain downwards; apex 12a contacts or isolates with central fixed contact 11a; carry out switching function, the strain of corresponding this apex 12a, and between the adhesive portion a of partition 13 and the adhesive portion b of leaf spring 12 the pars contractilis L of screening glass 14 also can produce distortion.
At this moment; as Fig. 3; on screening glass 14, there is the non-facies posterior hepatis 14b that is not attached to partition 13 by adhesive 14a; as shown in Figures 4 and 5; the strain of corresponding leaf spring 12; more can increase the deflection of pars contractilis L in the non-facies posterior hepatis 14b of screening glass 14, therefore, can prevent from traditionally cannot being fully out of shape because of pars contractilis L the generation that causes the switch bad phenomenon that apex 12a cannot contact with central fixed contact 11a.
Fig. 7 is the profile presenting according to the touch-switch of the 2nd embodiment of the present utility model; in aforesaid the 1st embodiment; cut apart the height of partition 13; between partition 13 and screening glass 14, possesses in addition intermediate plate 15; in addition; the structure identical with the 1st embodiment has identical symbol, omits concrete structure and the explanation of effect.
Described intermediate plate 15; above it, be attached to screening glass 14 by adhesive 14a; its underrun adhesive 15a is attached to partition 13; intermediate plate 15 be above attached to screening glass 14, illustrated in Fig. 9 a, above whole of intermediate plate 15 adhere to by adhesive 14a; the bottom surface of intermediate plate 15 is as illustrated in Fig. 9 b; by adhesive 15a be attached to partition 13 above, along the edge of described leaf spring 12, form the non-facies posterior hepatis 15b not adhering to by adhesive 15a in many places.
For example, non-facies posterior hepatis 15b, as Fig. 9 b, the both sides that are preferably in the length direction of leaf spring 12 and the edge of amplitude direction form, illustrated in Fig. 6 a of the 1st embodiment and 6b, also can wherein forming on one side in the edge of the length direction of leaf spring 12 and amplitude direction.
Have this structure according to the touch-switch of the 2nd embodiment of the present utility model; as Fig. 7 and Fig. 8; if the apex 12a of pressurization or releasing pressurization leaf spring 12; make its strain downwards; apex 12a contacts or isolates with central fixed contact 11a; carry out switching function, the strain of corresponding this apex 12a, and between the adhesive portion a of partition 13 and the adhesive portion b of leaf spring 12 the pars contractilis L of screening glass 14 also can produce distortion.
At this moment; in the 2nd embodiment; also identical with the 1st embodiment, be attached on the intermediate plate 15 above of partition 13, as Fig. 9 b; there is the non-facies posterior hepatis 15b not adhering to by adhesive 15a; as Fig. 7 and Fig. 8, the strain of corresponding leaf spring 12, more can increase the deflection of the pars contractilis L of screening glass 14; therefore, can prevent from traditionally cannot being fully out of shape because of pars contractilis L the generation that causes the switch bad phenomenon that apex 12a cannot contact with central fixed contact 11a.
Especially, in the 2nd embodiment, the height of the non-facies posterior hepatis 14b of the aspect ratio of non-facies posterior hepatis 15b the 1st embodiment is low, and low degree is identical with the thickness of intermediate plate 15, and the strain of corresponding leaf spring 12 can fully be guaranteed the deflection of the pars contractilis L of screening glass 14.
Figure 10 is the plane graph presenting according to the touch-switch of the 3rd embodiment of the present utility model; for the structure of aforesaid the 1st embodiment; on the pars contractilis L of screening glass 14, form pleated portions 16; in addition; the structure identical with the 1st embodiment has identical symbol, omits concrete structure and the explanation of effect.
Described pleated portions 16,12 apex 12a of the described leaf spring of corresponding pressurization and the strain that produces makes the dilatation of the pars contractilis L of screening glass 14 become smooth and easy.
Described pleated portions 16 is preferably in, except and the adhesive portion a above of partition 13, with adhesive portion b above the apex 12a of leaf spring 12 part and the adhesive portion a of partition 13 and and the adhesive portion b of leaf spring 12 between pars contractilis L go up formation.
Pleated portions 16, for example, formed multiple linear pattern grooves on screening glass 14, illustrated in Figure 10, forms linear pattern groove with speckle form, to easily form.At this moment; illustrated in Figure 11 a; the both sides that groove is preferably in the above and below of screening glass 14 form; although not shown; also can in the above and below of screening glass 14, wherein form groove on one side; the surface that also can dig screening glass 14 by processing forms groove, also can form groove by the punch forming of screening glass 14.
And as the variation of described pleated portions 16; illustrated in Figure 12 a; on screening glass 14, form the groove identical with the apperance of the edge part along leaf spring 12; form at certain intervals multiple; or as illustrated in Figure 12 b; also can process on screening glass 14 shape by embossing conglobate concavo-convex, to easily form.
According to the utility model with this structure; as Figure 11 a and Figure 11 b; if the apex 12a of pressurization or releasing pressurization leaf spring 12; make its strain downwards; apex 12a contacts or isolates with central fixed contact 11a; carry out switching function, the strain of corresponding this apex 12a, the pars contractilis L of screening glass 14 also can produce distortion.
At this moment; the 3rd embodiment compares the 1st embodiment; by the upper established pleated portions 16 of pars contractilis L of screening glass 14; dilatation becomes and is more prone to realize, even if the size of leaf spring 12 is less, the length of crimp shape pars contractilis L is shortened; also easy dilatation of pars contractilis L; the strain of the 12a of corresponding vertex portion, therefore, can prevent from traditionally cannot being fully out of shape because of pars contractilis L the generation that causes the switch bad phenomenon that apex 12a cannot contact with central fixed contact 11a.
Figure 13 a and Figure 13 b are according to the profile of the operate condition of the touch-switch of the 4th embodiment of the present utility model; in the structure of aforesaid the 2nd embodiment; the pars contractilis L of screening glass 14 has formed pleated portions 16; in addition; the structure identical with the 2nd embodiment has identical symbol, omits concrete structure and the explanation of effect.
According to this structure; identical with aforesaid the 3rd embodiment; compare the 2nd embodiment; pars contractilis L by screening glass 14 has formed pleated portions 16; dilatation is become and be more prone to realize; even if the size of leaf spring 12 is less; the length of crimp shape pars contractilis L is shortened; also easy dilatation of pars contractilis L; the strain of the 12a of corresponding vertex portion; therefore, can prevent from traditionally cannot being fully out of shape because of pars contractilis L the generation that causes the switch bad phenomenon that apex 12a cannot contact with central fixed contact 11a.
Aforesaid embodiment is preferred embodiment of the present utility model, interest field of the present utility model is not limited to the embodiment of described explanation, within the scope of technological thought of the present utility model and utility model registration claim, this field practitioner can carry out numerous variations, distortion or replacement, and this embodiment also belongs to scope of the present utility model.
Claims (4)
1. a touch-switch, is characterized in that: comprise
Printed circuit board (PCB), has formed multiple fixed contacts above;
The leaf spring of domed shape, is arranged on described printed circuit board (PCB), and peripheral edge portion is contacted with both sides fixed contact, and apex is positioned on central fixed contact;
Partition, is positioned on described printed circuit board (PCB), has formed the spatial portion of accommodating described leaf spring;
Screening glass, by adhesive attachment arrive described partition above and the apex of leaf spring, leaf spring is fixed in the spatial portion of partition;
On the screening glass above described partition by adhesive attachment, form not by the non-facies posterior hepatis of adhesive attachment, and formed in multiple places along the edge of described leaf spring.
2. a touch-switch, is characterized in that: comprise
Printed circuit board (PCB), has formed multiple fixed contacts above;
The leaf spring of domed shape, is arranged on described printed circuit board (PCB), and peripheral edge portion is contacted with both sides fixed contact, and apex is positioned on central fixed contact;
Partition, is positioned on described printed circuit board (PCB), has formed the spatial portion of accommodating described leaf spring;
Intermediate plate, by adhesive attachment arrive described partition above;
Screening glass, by adhesive attachment arrive described intermediate plate above and the apex of leaf spring, leaf spring is fixed in the spatial portion of partition;
On the screening glass above described partition by adhesive attachment, form not by the non-facies posterior hepatis of adhesive attachment, and along the edge of described leaf spring, multiple local formation.
3. touch-switch according to claim 1 and 2, is characterized in that:
Wherein one side or the both sides of described non-facies posterior hepatis in the length direction of leaf spring and the edge of amplitude direction form.
4. touch-switch according to claim 1 and 2, is characterized in that:
On described screening glass, form pleated portions, the apex of the described leaf spring of corresponding pressurization and the strain that produces makes dilatation become smooth and easy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079969.8U CN203799922U (en) | 2014-02-25 | 2014-02-25 | Light touch switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079969.8U CN203799922U (en) | 2014-02-25 | 2014-02-25 | Light touch switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799922U true CN203799922U (en) | 2014-08-27 |
Family
ID=51382117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079969.8U Expired - Fee Related CN203799922U (en) | 2014-02-25 | 2014-02-25 | Light touch switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203799922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305803A (en) * | 2018-01-17 | 2018-07-20 | 维沃移动通信有限公司 | A kind of switch module and electronic equipment |
-
2014
- 2014-02-25 CN CN201420079969.8U patent/CN203799922U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305803A (en) * | 2018-01-17 | 2018-07-20 | 维沃移动通信有限公司 | A kind of switch module and electronic equipment |
| CN108305803B (en) * | 2018-01-17 | 2020-03-31 | 维沃移动通信有限公司 | Switch assembly and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20190225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |