CN208924204U - Capacitive touch switch - Google Patents
Capacitive touch switch Download PDFInfo
- Publication number
- CN208924204U CN208924204U CN201821027078.2U CN201821027078U CN208924204U CN 208924204 U CN208924204 U CN 208924204U CN 201821027078 U CN201821027078 U CN 201821027078U CN 208924204 U CN208924204 U CN 208924204U
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- Prior art keywords
- switch
- capacitive touch
- touch
- middleware
- circuit board
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Abstract
The utility model relates to a kind of capacitive touch switches, comprising: switch cover is provided with touch area in its face side, touches in user or when close to the touch area, the capacitive touch switch switches between closed state and off-state；Printed circuit board is provided with touch control chip, for controlling switching of the capacitive touch switch between closed state and off-state；And sensing user touch or the middleware close to the touch area of switch cover.The surface of middleware is applied with the conductive layer of the capacitance sensor as capacitive touch switch, in the capacitive touch switch of assembling, touch control chip on the conductive layer and printed circuit board is electrically connected, it is touched in user or when close to the touch area of switch cover, touch control chip detects inductance capacitance caused by conductive layer, and controls capacitive touch switch and switch between closed state and off-state.
Description
Technical field
The utility model relates to a kind of capacitive touch switch, the capacitive touch switch is particularly capable of with simple and cost
The mode of benefit manufactures.
Background technique
It usually requires to provide various switches in electronic product.Traditional mechanical switch is widely used, but
Application in a variety of specific occasions is controlled.For example, in vehicle occupant compartment, if controlling automobile using mechanical switch
Indoor lamp can generate certain noise, and need biggish area occupied, cannot achieve miniaturization, while there is also handling
Safeguard inconvenient problem.
It is known in the art that replacing mechanical switch using capacitive touch switch.When the body of user's such as finger
When the touch area of body region contact or close capacitive touch switch, electrode is made to generate inductance capacitance, touches chip and detect this
The variable quantity of inductance capacitance, then output switching signal, and then realize and the electronic product of such as automobile room lamp is operated
Control.
In existing capacitive touch switch, flexible printed circuit board (FPC) is generallyd use as electrode.FPC is pasted onto
The back side of the touch area of capacitive touch switch, and it is connected to printed circuit board (PCB).Common FPC is, for example, to coat conduction
Silver paste/copper paddle or including conductive silver paste/copper paddle interlayer flexible resin film.
However, there are a variety of disadvantages for the capacitive touch switch of the prior art.For example, FPC to be pasted onto the back of touch area
The step of side is usually time-consuming.Have more complex in the touch area of capacitive touch switch due to beautiful or other needs
When shape, the gluing steps are possibly even difficult.Further, since FPC price is costly, the capacitive touch of the prior art
Touch the higher cost of switch.
Therefore, it is necessary to a kind of capacitive touch switches for simplifying assembling steps and reducing costs.
Utility model content
Therefore, the utility model aim is to provide a kind of capacitive touch switch, has compared to existing capacitive touch switch
There is the structure of optimization, reduce number of parts, so as to simplify assembling steps, while there is the production cost of reduction.
The purpose is realized by the capacitive touch switch of one embodiment according to the present utility model.The capacitive touch
Touching switch includes: switch cover, which is provided with touch area in its face side, is touched in user or close to touch area
When, capacitive touch switch switches between closed state and off-state；It is provided with the printed circuit board of touch control chip, institute
Touch control chip is stated for controlling switching of the capacitive touch switch between closed state and off-state；And middleware,
For sensing user touch or close to the touch area of switch cover.The surface of the middleware is applied with as the capacitance touch
The conductive layer of the capacitance sensor of switch.Touching in assembled capacitive touch switch, on the conductive layer and printed circuit board
Touch control chip electrical connection.It is touched in user with finger or when close to the touch area of switch cover, which generates induction
Capacitor.Touch control chip detects the variable quantity of this inductance capacitance, then output switching signal, controls capacitive touch switch
Switch between closed state and off-state.The capacitive touch switch according to the present utility model surface for being applied to middleware
On conductive layer as capacitance sensor, instead of FPC, to reduce number of parts, reduce costs.
In an alternative embodiment of the utility model, the capacitive touch switch further includes resilient conductive member.?
When assembling capacitive touch switch, switch cover is pressed against the middleware, so that the resilient conductive member is pressed against by middleware
On the golden finger of the printed circuit board.Therefore, conductive layer is connected electrically to the touch control chip of printed circuit board simultaneously, and
Without special Connection Step.Preferably, the resilient conductive member is conducting foam.
In an alternative embodiment of the utility model, luminescent device is additionally provided on the printed circuit board, such as
Light emitting diode.User touches or can open or close the luminescent device close to the touch area of switch cover.Preferably, described
At least part of switch cover and at least part of the middleware are transparent or partially transparent, the luminescent device quilts
It is encapsulated between printed circuit board and middleware.Therefore, the capacitive touch switch can be used as illuminating device use, such as make
For automobile room lamp, reading lamp etc..According to different illumination needs, the middleware can also to the light that luminescent device issues into
Row reflection, refraction, to be assembled, be dissipated or the light of straight outgoing.
In an alternative embodiment of the utility model, the conductive layer is electroconductive paints, electrically conductive ink or electroplated layer.
Detailed description of the invention
From the preferred embodiments of the present invention being described in detail with reference to the accompanying drawing, the advantages of the utility model and
Purpose is available to be more fully understood.In order to preferably show the relationship of each component in the accompanying drawings, attached drawing is not necessarily drawn to scale.
In attached drawing:
Fig. 1 shows the cross-sectional view of the capacitive touch switch of one embodiment according to the present utility model.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiments of the present invention clearer, below in conjunction with this reality
Clear, complete description is carried out with technical solution of the attached drawing of new embodiment to the embodiments of the present invention.In the accompanying drawings,
Identical appended drawing reference is endowed component part substantially with same or like structure and function, and will omit about it
Repeated description.
Unless otherwise defined, terminology used herein or scientific term are should be in the utility model fields
The ordinary meaning that those of ordinary skill is understood.Used in the utility model patent application specification and claims
"one", the similar word such as " one " or "the" do not indicate that quantity limits yet, but indicates that there are at least one." comprising " or
The similar word such as "comprising" means that the element or object that occur before the word cover the element for appearing in the word presented hereinafter
Perhaps object and its equivalent and be not excluded for other elements or object.In addition, the utility model patent application specification and
"upper", "lower" used in claims, "left", "right" etc. are only used for indicating relative positional relationship, when being described object
After absolute position changes, then the relative positional relationship may also correspondingly change, and merely to describe conveniently rather than to this
The limitation of utility model.
Fig. 1 shows the schematic diagram of the partial sectional of the capacitive touch switch according to the utility model one embodiment.
In this embodiment, as shown in Figure 1, capacitive touch switch includes switch cover 1, the top of the switch cover 1 is to touch
Region.Touch area is here illustrated as flat.For beautiful or touch comfort level needs, which can also have
There is any suitable shape.Middleware 2 is arranged in inside switch cover 1, for sensing user touch or close to the touch of switch cover 1
Region.The conductive layer as capacitance sensor is applied on the surface of middleware 2.Optionally, the conductive layer can be conduction
Skin of paint, conductive ink layer, electroplated layer, or middleware 2 is applied to by the methods of sputtering, vapor deposition, chemical vapor deposition, coating
On any suitable conductive layer.Conductive layer can cover all or part of of 2 surface of middleware.In capacitive touch switch
Lower part is printed circuit board 6, the printed circuit board 6 be provided with control capacitive touch switch closed state and off-state it
Between switching touch control chip 5.Resilient conductive member 3 is clamped in the conductive layer of middleware 2 and the golden hand of printed circuit board 6
Between finger, the electrical connection of touch control chip 5 is provided, without providing special interconnecting piece again for capacitance sensor
Part.Optionally, resilient conductive member 3 can be conducting foam.
In addition, being additionally provided with luminescent device 4 on the printed circuit board 6, such as light emitting diode (LED).User touches
Or the luminescent device can be opened or closed close to the touch area of switch cover 1.Particularly, as shown in Figure 1, the luminescent device
4 are encapsulated between printed circuit board 6 and middleware 2, and at least part of switch cover 1 and middleware 2 is transparent or part is saturating
Bright.Therefore, the capacitive touch switch can be used as illuminating device use, such as automobile room lamp, reading lamp etc..Root
It is needed according to different illuminations, the shape or material that the middleware 2 can also have suitable light to be reflected, reflect, to obtain
It assembles, the light of diverging or straight outgoing.
Then, the method for being used to assemble capacitive touch switch will be described with reference to the attached figures.Firstly, switch cover 1 is provided, switch
Touch area is provided in Gai Qi face side.Then, middleware 2 is provided, and passes through vapor deposition, painting on the surface of middleware 2
It the methods of covers and to apply conductive layer.Then, the printed circuit board 6 for being provided with touch control chip 5 is provided.Finally, by switch cover 1,
Middleware 2 is fitted together with printed circuit board 6, while electrical connection is established between conductive layer and touch control chip 5.It can
Selection of land can also provide resilient conductive member 3.It is described in the step of assembling switch cover 1, middleware 2 and printed circuit board 6
Switch cover 1 is pressed against middleware 2, so that the resilient conductive member 3 is pressed against the gold of the printed circuit board 6 by middleware 2
On finger.Thus, it is possible to save the special Connection Step that capacitance sensor is connected to printed circuit board.
After capacitive touch switch assembles, user can touch or close to the touch area of switch cover 1.Conductive layer produces
Raw inductance capacitance, touch control chip 5 detect the variable quantity of this inductance capacitance, then output switching signal, control capacitor
Soft-touch control switches between closed state and off-state, can also open or close luminescent device 4.
In conclusion capacitive touch switch according to the present utility model have the advantage that at least that: eliminate more high
Expensive FPC, saves cost；In assembling, the step of switch cover 1, middleware 2 are fitted together with printed circuit board 6, is i.e.
It can ensure that the electrical connection between conductive layer and printed circuit board 6, without capacitance sensor is connected to printed circuit board
Special Connection Step.
It should be understood that described above and structure being shown in the accompanying drawings is only the example of the utility model, it can
Other structures by showing the same or similar function for obtaining required final result replace.Additionally, it should be appreciated that
It is that embodiment described above and shown in the drawings should be considered as merely comprising the non-limiting example of the utility model, and it
It can modify in many ways in the range of Patent right requirement.
Claims (8)
1. a kind of capacitive touch switch, comprising:
Switch cover, the switch cover are provided with touch area in its face side, touch in user or when close to the touch area, institute
Capacitive touch switch is stated to switch between closed state and off-state；
Printed circuit board is provided with touch control chip on the printed circuit board, is being closed for controlling capacitive touch switch
Switching between state and off-state；
Middleware, the middleware sensing user touch or the touch area close to switch cover；
It is characterized in that, the surface of the middleware is applied with the conduction of the capacitance sensor as the capacitive touch switch
Layer, in the capacitive touch switch of assembling, the touch control chip on the conductive layer and printed circuit board is electrically connected, in user
It touches or when close to the touch area of switch cover, touch control chip detects inductance capacitance caused by conductive layer, and controls electricity
Hold soft-touch control to switch between closed state and off-state.
2. capacitive touch switch according to claim 1, which is characterized in that the capacitive touch switch further includes elastic conducting
Electrical components, when assembling capacitive touch switch, the switch cover is pressed against middleware, so that middleware is by the resilient conductive member pressure
On the golden finger for leaning against the printed circuit board.
3. capacitive touch switch according to claim 2, which is characterized in that the resilient conductive member is conducting foam.
4. capacitive touch switch according to claim 1, which is characterized in that be additionally provided on the printed circuit board luminous
Device, user touch or can open or close the luminescent device close to the touch area of switch cover.
5. capacitive touch switch according to claim 4, which is characterized in that the luminescent device is light emitting diode.
6. capacitive touch switch according to claim 4, which is characterized in that at least part of the switch cover and institute
State middleware at least part be it is transparent or partially transparent, the luminescent device is encapsulated in printed circuit board and middleware
Between.
7. capacitive touch switch according to claim 6, which is characterized in that the middleware can issue luminescent device
Light reflected, reflected.
8. capacitive touch switch according to claim 1, which is characterized in that the conductive layer is electroconductive paints, conductive oil
Ink or electroplated layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821027078.2U CN208924204U (en) | 2018-06-29 | 2018-06-29 | Capacitive touch switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821027078.2U CN208924204U (en) | 2018-06-29 | 2018-06-29 | Capacitive touch switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208924204U true CN208924204U (en) | 2019-05-31 |
Family
ID=66694992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821027078.2U Active CN208924204U (en) | 2018-06-29 | 2018-06-29 | Capacitive touch switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208924204U (en) |
-
2018
- 2018-06-29 CN CN201821027078.2U patent/CN208924204U/en active Active
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