CN207977949U - A kind of button for automobile - Google Patents
A kind of button for automobile Download PDFInfo
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- CN207977949U CN207977949U CN201820220913.8U CN201820220913U CN207977949U CN 207977949 U CN207977949 U CN 207977949U CN 201820220913 U CN201820220913 U CN 201820220913U CN 207977949 U CN207977949 U CN 207977949U
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- 230000005669 field effect Effects 0.000 claims description 13
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model provides a kind of button for automobile, including：Piezoelectric patches；Capacitive buttons module is connect with the piezoelectric patches, detects the capacitance variations on the piezoelectric patches；Feedback module is touched, is connect with the piezoelectric patches, ac signal is sent to the piezoelectric patches；Control module is connect with the capacitive buttons module and touch feedback module, controls the capacitive buttons module and touch feedback module is in connection status or off-state with the piezoelectric patches；The control module controls the capacitive buttons module and is in connection status with the piezoelectric patches, after the capacitive buttons module detects that the piezoelectric patches receives capacitance variations caused by an external touch, the control module control touch feedback module is in connection status with the piezoelectric patches makes the piezoelectric patches vibrate.After adopting the above technical scheme, realizing touch detection and haptic feedback effect on same button；Cost is reduced, structure space is saved.
Description
Technical field
The utility model is related to button field more particularly to a kind of buttons for automobile.
Background technology
In button field, the basic function of button is the perception realized to user's operation, common button detection technique
Including the detection of electrical contact break-make, resistance detection, capacitance detecting etc., wherein capacitance measurement technique is drawn using human body touch button
The variation of capacitance realize, human contact's button is only needed, without pressing.For the application field of certain occasions
For, such as whether automotive field need to succeed to user's Real-time Feedback real-time when user operates button
Button operation, common feedback system are setting vibration, sound or optical signal prompt except button.However, above-mentioned feedback side
Formula needs additional component to realize, increases cost, also takes up design space, it is therefore desirable to a kind of novel to be used for automobile
Button, can be integrated by the detection function of user's operation and to the feedback function of user's operation.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is to provide a kind of buttons for automobile, same
The technique effect for receiving user's operation and feedback is realized on one button.
The utility model discloses a kind of buttons for automobile, including：Piezoelectric patches, including the first piezoelectric layer and be set to institute
State the second piezoelectric layer above the first piezoelectric layer；Capacitive buttons module is connect with the piezoelectric patches, is detected on the piezoelectric patches
Capacitance variations；Feedback module is touched, is connect with the piezoelectric patches, ac signal is sent to the piezoelectric patches；Control module, with
The capacitive buttons module and touch feedback module connection, control the capacitive buttons module and touch feedback module and the pressure
Electric piece is in connection status or off-state；The control module, which controls the capacitive buttons module and is in the piezoelectric patches, to be connected
State is connect, after the capacitive buttons module detects that the piezoelectric patches receives capacitance variations caused by an external touch, the control
The molding block control touch feedback module is in connection status with the piezoelectric patches makes the piezoelectric patches vibrate.
Preferably, the capacitive buttons module includes：Capacitive sensing chip is connect with first piezoelectric layer, detects institute
State the capacitance on the first piezoelectric layer；The control module is connect with the capacitive sensing chip, obtains the capacitance, is judged
Whether the capacitance is more than a predetermined capacitive threshold value.
Preferably, the touch feedback module includes：Piezo-electric drive units, with first piezoelectric layer and the second piezoelectric layer
Connection, ac signal is sent out to first piezoelectric layer and the second piezoelectric layer；The control module and the Piezoelectric Driving list
Member connection sends control signal to the piezo-electric drive units.
Preferably, the control module includes：First switch pipe is serially connected with the piezo-electric drive units and is pressed with described first
Between electric layer；Second switch pipe is serially connected between the capacitive sensing chip and first piezoelectric layer；Control unit, with institute
The control terminal connection for stating first switch pipe and second switch pipe, control the first switch pipe and second switch pipe be on or
Cut-off state；Described control unit is connect with the capacitive sensing chip, when described control unit judges that the capacitance is more than
It when one predetermined capacitive threshold value, controls the second switch pipe and is in cut-off state, control the first switch pipe and be on shape
State.
Preferably, described control unit is connect with the piezo-electric drive units, sets the work of the piezo-electric drive units
Pattern.
Preferably, the first switch pipe and second switch pipe are N-channel field-effect tube and P-channel field-effect transistor (PEFT) pipe；Or institute
It is P-channel field-effect transistor (PEFT) pipe and N-channel field-effect tube to state first switch pipe and second switch pipe；The control module further includes：The
One resistance, first end are connect with the control terminal of the first switch pipe；Second resistance, first end and the second switch pipe
Control terminal connection, second end and the second end of the first resistor and connecing connect with described control unit afterwards.
Preferably, first piezoelectric layer is metal material；Second piezoelectric layer is ceramic material.
Preferably, first piezoelectric layer and the second piezoelectric layer are circle, and the area of first piezoelectric layer is more than institute
State the area of the second piezoelectric layer.
After using above-mentioned technical proposal, compared with prior art, have the advantages that：
1. realizing touch detection and haptic feedback effect on same button；
2. reducing cost, structure space is saved.
Description of the drawings
Fig. 1 is the structural schematic diagram for meeting button in one preferred embodiment of the utility model；
Fig. 2 is the structural schematic diagram of piezoelectric patches 100 in Fig. 1；
Fig. 3 is the concrete structure schematic diagram for meeting button in another preferred embodiment of the utility model.
Reference numeral：
100- piezoelectric patches, the first piezoelectric layers of 101-, the second piezoelectric layers of 102-, 200- capacitive buttons module, 201- capacitance senses
Chip, 300- is answered to touch feedback module, 301- piezo-electric drive units, 400- control modules, 401- first switches pipe, 402- second
Switching tube, 403- control units, 404- first resistors, 405- second resistances.
Specific implementation mode
The advantages of the utility model is expanded on further below in conjunction with attached drawing and specific embodiment.
Refering to fig. 1, to meet the structural schematic diagram of button in one preferred embodiment of the utility model, the button includes：
Piezoelectric patches 100
The piezoelectric patches 100 is commonly called as piezo, is a kind of electrophonic musical element, when connecting ac signal, the pressure
Electric piece 100 can be vibrated according to the big small frequency of signal, or even can generate corresponding sound.Referring to Fig.2, the piezoelectric patches
100 include the first piezoelectric layer 101 and the second piezoelectric layer 102 above first piezoelectric layer 101, first piezoelectric layer
101 be metal material, and second piezoelectric layer 101 is ceramic material, and the piezoelectric ceramics therefore the piezoelectric patches 100 is otherwise known as can
External communication electric signal is received to generate vibration, issues the user with feedback signal.Further, first piezoelectric layer 101 and
Second piezoelectric layer 102 is circle, and the area of first piezoelectric layer 101 is more than the area of second piezoelectric layer 102.
Capacitive buttons module 200
The capacitive buttons module is connect with the piezoelectric patches 100, detects the capacitance variations on the piezoelectric patches 100.When
When user touches the piezoelectric patches 100, the capacitance of the piezoelectric patches 100 can change, to by the capacitive buttons module
200 detection senses.
Touch feedback module 300
The touch feedback module 300 is connect with the piezoelectric patches 100, and ac signal is sent to the piezoelectric patches 100.
Control module 400
The control module 400 is connect with the capacitive buttons module 200 and touch feedback module 300, controls the electricity
Hold button module 200 and touch feedback module 400 and is in connection status or off-state with the piezoelectric patches 100.
The control module 400 controls the capacitive buttons module 200 and is in connection status, institute with the piezoelectric patches 100
It states capacitive buttons module 200 and detects that the piezoelectric patches 100 receives caused by an external touch after capacitance variations, the control mould
Block 400, which controls the touch feedback module 300 and is in connection status with the piezoelectric patches 100, makes the piezoelectric patches vibrate.
The i.e. described acquiescence of control module 400 keeps connection status with the capacitive buttons module 200, to have detected whether external touch behaviour
It acts on the piezoelectric patches 100, the capacitance variations caused by the capacitive buttons module 200 detects external touch operation
Afterwards, the control module 400 disconnects the connection of the capacitive buttons module 200 and the piezoelectric patches 100, and is touched described instead
Feedback module 300 is connect with the piezoelectric patches 100 so that the piezoelectric patches 100 can receive the touch feedback module 300 and send out
The ac signal gone out makes user discover the vibration to which the piezoelectric patches 100 vibrates.In this way, passing through Time-sharing control side
Formula makes the capacitive buttons module 200 work in the different periods from the touch feedback module 300, avoids working at the same time, because
This can be integrated in a button, and not will produce signal cross-talk.
Refering to Fig. 3, to meet the concrete structure schematic diagram of button in one preferred embodiment of the utility model, the capacitance is pressed
Button module 200 includes：
Capacitive sensing chip 201
The capacitive sensing chip 201 is connect with first piezoelectric layer 101, is detected on first piezoelectric layer 101
Capacitance.The capacitive sensing chip 201 is also known as soft-touch control, and first piezoelectric layer 101 is detected by capacitance induction principle
On capacitance.First piezoelectric layer 101 is connect as capacitance disk with the capacitive sensing chip 201, first piezoelectricity
Capacitance on layer 101 includes the finger between parasitic capacitance, the first piezoelectric layer and finger between the first piezoelectric layer 101 and ground
Capacitance, when not having external touch operation, the capacitance of first piezoelectric layer 101 is the parasitic capacitance, external tactile when having
When touching operation, it is cumulative with the finger capacitance that the capacitance of first piezoelectric layer 101 is the parasitic capacitance, therefore passes through institute
Stating capacitive sensing chip 201 can sense whether there is external touch operation.
In addition, the control module 400 is connect with the capacitive sensing chip 201, obtained from the capacitive sensing chip 201
The capacitance is taken, judges whether the capacitance is more than a predetermined capacitive threshold value.By the whether cumulative institute of the parasitic capacitance
The variation of capacitance can be caused by stating finger capacitance, therefore one can be preset in the control module 400 according to the parasitic capacitance
Capacitance threshold value, when there is the finger capacitance to add up, the capacitance on first piezoelectric layer 101 can be more than the capacitance threshold
Value, to make the judgement of external touch operation.
The touch feedback module 300 includes：
Piezo-electric drive units 301
The piezo-electric drive units 301 are connect with first piezoelectric layer, 101 and second piezoelectric layer 102, to described first
Piezoelectric layer 101 and the second piezoelectric layer 102 send out ac signal.If first piezoelectric layer, 101 and second piezoelectric layer 102 is wanted to produce
Raw vibration, must receive ac signal.
The control module 400 is connect with the piezo-electric drive units 301, is sent and is controlled to the piezo-electric drive units 301
Signal processed works in different patterns to control the piezo-electric drive units 301, such as sends out the different exchange telecommunications of frequency
Number.
The control module 400 includes：
First switch pipe 401
The first switch pipe 401 is serially connected between the piezo-electric drive units 301 and first piezoelectric layer 101, is used
It is switched on or switched off state between the piezo-electric drive units 301 and first piezoelectric layer 101 in controlling.As it can be seen that described
Two piezoelectric layers 102 are constantly in the state for receiving the ac signal, and first piezoelectric layer 101 is then opened by described first
It closes pipe 401 to control, be switched on or switched off with the piezo-electric drive units 301 according to the state of the first switch pipe 401.
Second switch pipe 402
The second switch pipe 402 is serially connected between the capacitive sensing chip 201 and first piezoelectric layer 101, is used
It is switched on or switched off state between the capacitive sensing chip 201 and first piezoelectric layer 101 in controlling.
Control unit 403
Described control unit 403 is connect with the control terminal of the first switch pipe 401 and second switch pipe 402, controls institute
It states first switch pipe 401 and second switch pipe 402 is on or cut-off state.Described control unit 403 also with the capacitance
Induction chip 201 and the piezo-electric drive units 301 connect, when described control unit 403 judges that the capacitance is more than one in advance
If when capacitance threshold value, controlling the second switch pipe 402 and being in cut-off state, controls the first switch pipe 401 and be on
State, the piezo-electric drive units 301 are connected with first piezoelectric layer 101, can receive ac signal.Above-mentioned control process
Realize the detection to external touch operation and feedback function.Described control unit 403 can be the tools such as microcontroller, microprocessor
There is the operation i.e. chip of store function.
In the present embodiment, the first switch pipe 401 and second switch pipe 402 can be the tools such as triode, field-effect tube
Have an electronic device of switching function, the first switch pipe 401 and second switch pipe 402 can respectively with described control unit 403
Different output interfaces connection, be also connected to a common output interface.
Further, the control module 400 further includes：
First resistor 404
The first end of the first resistor 404 is connect with the control terminal of the first switch pipe 401, to limit the control
Size of current between unit 403 and the control terminal of the first switch pipe 401.
Second resistance 405
The first end of the second resistance 405 is connect with the control terminal of the second switch pipe 402, second end with it is described
The second end of first resistor 404 is simultaneously connect after connecing with described control unit 403, to limit described control unit 403 and described the
Size of current between the control terminal of two switching tubes 402.
The first switch pipe 401 and second switch pipe 402 are N-channel field-effect tube and P-channel field-effect transistor (PEFT) pipe；Or it is described
First switch pipe 401 and second switch pipe 402 are P-channel field-effect transistor (PEFT) pipe and N-channel field-effect tube.The first switch pipe 401
And the control terminal of second switch pipe 402 can be connect with the same output interface of described control unit 403, and work in opposite shape
State, i.e., when the described first switch pipe 401 is connected, the second switch pipe 402 ends, and vice versa.This ensure that the electricity
Holding button module 200 can only work there are one module with feedback module 300 is touched in the same time, prevent the piezoelectric patches
100 power on signal clash.
It should be noted that the embodiments of the present invention have preferable implementation, and not the utility model is appointed
The limitation of what form, any one skilled in the art change or are modified to possibly also with the technology contents of the disclosure above
Same effective embodiment, as long as without departing from the content of technical solutions of the utility model, according to the technical essence of the utility model pair
Any modification or equivalent variations and modification, are still within the scope of the technical solutions of the present invention made by above example.
Claims (8)
1. a kind of button for automobile, which is characterized in that including：
Piezoelectric patches, including the first piezoelectric layer and the second piezoelectric layer above first piezoelectric layer；
Capacitive buttons module is connect with the piezoelectric patches, detects the capacitance variations on the piezoelectric patches；
Feedback module is touched, is connect with the piezoelectric patches, ac signal is sent to the piezoelectric patches；
Control module connect with the capacitive buttons module and touch feedback module, controls the capacitive buttons module and touch
Feedback module is in connection status or off-state with the piezoelectric patches；
The control module controls the capacitive buttons module and is in connection status, the capacitive buttons module with the piezoelectric patches
After detecting that the piezoelectric patches receives capacitance variations caused by an external touch, the control module controls the touch and feeds back mould
Block is in connection status with the piezoelectric patches makes the piezoelectric patches vibrate.
2. button as described in claim 1, which is characterized in that
The capacitive buttons module includes：
Capacitive sensing chip is connect with first piezoelectric layer, detects the capacitance on first piezoelectric layer；
The control module is connect with the capacitive sensing chip, obtains the capacitance, judges whether the capacitance is more than
One predetermined capacitive threshold value.
3. button as claimed in claim 2, which is characterized in that
The touch feedback module includes：
Piezo-electric drive units are connect with first piezoelectric layer and the second piezoelectric layer, to first piezoelectric layer and the second piezoelectricity
Layer sends out ac signal；
The control module is connect with the piezo-electric drive units, and control signal is sent to the piezo-electric drive units.
4. button as claimed in claim 3, which is characterized in that
The control module includes：
First switch pipe is serially connected between the piezo-electric drive units and first piezoelectric layer；
Second switch pipe is serially connected between the capacitive sensing chip and first piezoelectric layer；
Control unit is connect with the control terminal of the first switch pipe and second switch pipe, controls the first switch pipe and
Two switching tubes are on or cut-off state；
Described control unit is connect with the capacitive sensing chip, when described control unit judges that the capacitance is more than one and presets
When capacitance threshold value, controls the second switch pipe and be in cut-off state, it is in the conduction state to control the first switch pipe.
5. button as claimed in claim 4, which is characterized in that
Described control unit is connect with the piezo-electric drive units, sets the operating mode of the piezo-electric drive units.
6. button as described in claim 4 or 5, which is characterized in that
The first switch pipe and second switch pipe are N-channel field-effect tube and P-channel field-effect transistor (PEFT) pipe；Or
The first switch pipe and second switch pipe are P-channel field-effect transistor (PEFT) pipe and N-channel field-effect tube；
The control module further includes：
First resistor, first end are connect with the control terminal of the first switch pipe；
Second resistance, first end are connect with the control terminal of the second switch pipe, and the of second end and the first resistor
Two ends are simultaneously connect after connecing with described control unit.
7. button as described in any one in claim 1-5, which is characterized in that
First piezoelectric layer is metal material；
Second piezoelectric layer is ceramic material.
8. button as described in any one in claim 1-5, which is characterized in that
First piezoelectric layer and the second piezoelectric layer are circle, and the area of first piezoelectric layer is more than second piezoelectric layer
Area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820220913.8U CN207977949U (en) | 2018-02-08 | 2018-02-08 | A kind of button for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820220913.8U CN207977949U (en) | 2018-02-08 | 2018-02-08 | A kind of button for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207977949U true CN207977949U (en) | 2018-10-16 |
Family
ID=63767149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820220913.8U Expired - Fee Related CN207977949U (en) | 2018-02-08 | 2018-02-08 | A kind of button for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207977949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054978A (en) * | 2021-03-16 | 2021-06-29 | 科世达(上海)机电有限公司 | Automobile touch device and touch vibration device thereof |
-
2018
- 2018-02-08 CN CN201820220913.8U patent/CN207977949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054978A (en) * | 2021-03-16 | 2021-06-29 | 科世达(上海)机电有限公司 | Automobile touch device and touch vibration device thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181016 |