CN202261211U - Normally closed photoelectric sensing switch - Google Patents
Normally closed photoelectric sensing switch Download PDFInfo
- Publication number
- CN202261211U CN202261211U CN2011203582256U CN201120358225U CN202261211U CN 202261211 U CN202261211 U CN 202261211U CN 2011203582256 U CN2011203582256 U CN 2011203582256U CN 201120358225 U CN201120358225 U CN 201120358225U CN 202261211 U CN202261211 U CN 202261211U
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- CN
- China
- Prior art keywords
- receiver
- normally closed
- baffle plate
- baffle
- bracket
- 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 discloses a normally closed photoelectric sensing switch which comprises a bracket. The bracket is of a U shape. One end of the bracket is provided with a transmitter. The corresponding other end of the bracket is provided with a corresponding receiver. A baffle is arranged between the transmitter and the receiver. The baffle is connected with a key board. A small hole is arranged on the baffle. At a reset position, an optical signal transmitted by the transmitter is shielded by the baffle; and when the key board is stressed, the optical signal transmitted by the transmitter passes through the small hole to be received by the receiver. The utility model overcomes the defects of short service life and low sensitivity of the existing mechanical switch. The optical signal is converted into an electric signal to control switching-on and switching-off of a circuit. The mechanical motion of a mechanical switch is avoided, so that the aims of prolonging the service life and improving the sensitivity are fulfilled.
Description
Technical field
The utility model relates to a kind of switch, specifically a kind of normally closed type photoelectric sensor switch.
Background technology
At present, various device or device are gone up the logic switch that is used to control mains switch that uses, and what use basically all is mechanical switch.Through pressing mechanical switch, produce logic level signal, the functional module in trigger equipment or the device realizes function corresponding.But mechanical switch comes down to a kind of contact switch, has contact resistance, can produce friction between the mechanical switch contact simultaneously, make that its mechanical endurance is shorter, and sensitivity is relatively poor; Mechanical switch is easy to make moist, thereby influences the operate as normal of equipment or device.
The utility model content
The purpose of the utility model provides a kind of simple in structure, precise control, the photoelectric sensor switch of long service life.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of normally closed type photoelectric sensor switch comprises support, and said support is the U type; Support one end is provided with reflector, and the other end corresponding with it is provided with corresponding receiver, between reflector and receiver, is provided with baffle plate; Baffle plate is connected with keypad, and baffle plate is provided with an aperture, when reset position; The light signal of reflector emission is blocked by baffle plate, and when keypad was under pressure, the light signal of reflector emission passed aperture and is received by the receiver.
Said receiver is NPN type phototriode or the photosensitive triode of positive-negative-positive.
Said baffle plate is that light tight material is processed.
The two ends of keypad are connected with support through spring, and when keypad was under pressure, the aperture position on the baffle plate was moved; Baffle plate gets out of the way the light signal that reflector sends; Receiver is given control circuit with feedback information, thus the control circuit break-make, and make circuit be in normally off.
The beneficial effect of the utility model is:
It is short that the utility model has remedied the existing machinery switch life, and the defective that sensitivity is low is transformed into the signal of telecommunication with light signal and comes the control circuit break-make, has avoided the mechanical movement of mechanical switch, thereby reaches the purpose that increases the service life, improves sensitivity.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the reset mode of the utility model;
Structural representation when Fig. 2 is under pressure for the utility model keypad.
Embodiment
A kind of normally closed type photoelectric sensor switch comprises support 6, and said support is the U type; Support 6 one ends are provided with reflector 2, and the other end corresponding with it is provided with corresponding receiver 5, between reflector 2 and receiver 5, are provided with baffle plate 7; Baffle plate 7 is connected with keypad 4, and baffle plate 7 is provided with an aperture 8, when reset position; The light signal of reflector 2 emissions is blocked by baffle plate, and when keypad 4 was under pressure, the light signal of reflector 2 emissions passed aperture 8 and is received device 5 receptions.
Said receiver 5 is NPN type phototriode or the photosensitive triode of positive-negative-positive.
Said baffle plate 7 is processed for light tight material.
The two ends of keypad 4 are connected with support 6 through spring 3, and when keypad 4 was under pressure, aperture 8 positions on the baffle plate were moved; Baffle plate gets out of the way the light signal that reflector 2 sends; Receiver 5 is given control circuit 1 with feedback information, thus the control circuit break-make, and make circuit be in normally off.
More than the disclosed specific embodiment that is merely this patent, but this patent is not limited thereto, for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, the distortion of making should be regarded as belonging to the utility model protection range.
Claims (4)
1. a normally closed type photoelectric sensor switch comprises support, and said support is the U type; Support one end is provided with reflector, and the other end corresponding with it is provided with corresponding receiver, it is characterized in that: between reflector and receiver, be provided with baffle plate; Baffle plate is connected with keypad, and baffle plate is provided with an aperture, when reset position; The light signal of reflector emission is blocked by baffle plate, and when keypad was under pressure, the light signal of reflector emission passed aperture and is received by the receiver.
2. a kind of normally closed type photoelectric sensor switch according to claim 1 is characterized in that: said receiver is NPN type phototriode or the photosensitive triode of positive-negative-positive.
3. a kind of normally closed type photoelectric sensor switch according to claim 1 is characterized in that: said baffle plate is that light tight material is processed.
4. a kind of normally closed type photoelectric sensor switch according to claim 1 is characterized in that: the two ends of keypad are connected with support through spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203582256U CN202261211U (en) | 2011-09-23 | 2011-09-23 | Normally closed photoelectric sensing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203582256U CN202261211U (en) | 2011-09-23 | 2011-09-23 | Normally closed photoelectric sensing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261211U true CN202261211U (en) | 2012-05-30 |
Family
ID=46122390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203582256U Expired - Fee Related CN202261211U (en) | 2011-09-23 | 2011-09-23 | Normally closed photoelectric sensing switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261211U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080869A (en) * | 2016-08-09 | 2016-11-09 | 尚艳燕 | A kind of electrodynamic balance car and pedal assembly thereof |
| WO2018027546A1 (en) * | 2016-08-09 | 2018-02-15 | 尚艳燕 | Electric balance vehicle and pedal assembly thereof |
-
2011
- 2011-09-23 CN CN2011203582256U patent/CN202261211U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080869A (en) * | 2016-08-09 | 2016-11-09 | 尚艳燕 | A kind of electrodynamic balance car and pedal assembly thereof |
| WO2018027546A1 (en) * | 2016-08-09 | 2018-02-15 | 尚艳燕 | Electric balance vehicle and pedal assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120923 |