CN203632637U - Anti-interference photoelectric switch - Google Patents
Anti-interference photoelectric switch Download PDFInfo
- Publication number
- CN203632637U CN203632637U CN201320693806.4U CN201320693806U CN203632637U CN 203632637 U CN203632637 U CN 203632637U CN 201320693806 U CN201320693806 U CN 201320693806U CN 203632637 U CN203632637 U CN 203632637U
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- infrared
- circuit
- optoelectronic switch
- jamproof
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- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 230000004313 glare Effects 0.000 claims description 37
- 230000005693 optoelectronics Effects 0.000 claims description 37
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses an anti-interference photoelectric switch which comprises a shell which is internally equipped with a circuit element. The circuit element is provided with an infrared emitting circuit and an infrared receiving circuit which is matched with the infrared emitting circuit. The shell is provided with an emitting port and a receiving port which are used for forming light coupling at the infrared emitting circuit and the infrared receiving circuit. The shell is provided with stray light blocking parts at the edge of the emitting port and the receiving port respectively. According to the anti-interference photoelectric switch, through the stray light blocking parts at the edge of the emitting port and the receiving port, the stray light is blocked from entering into the receiving port, the interference of stray light is reduced, and the accuracy of the photoelectric switch is improved.
Description
Technical field
The utility model relates to a kind of photo-electric sensing equipment, particularly relates to a kind of jamproof optoelectronic switch.
Background technology
Along with social development, elevator has obtained applying more and more widely, and optoelectronic switch has played very important effect in whole elevator device, and it makes elevator can rest in accurately destination.The principle of optoelectronic switch is to utilize detected material to the blocking or reflect of light beam, and by synchronization loop gating circuit, thereby detect, object has or not.By detection mode classification, can be divided into diffuse type, correlation, reflection type mirror, slot type optoelectronic switch and optic fiber photoelectric switch.
Wherein, slot type optoelectronic switch is the U font structure of standard normally, and its transmitting tube and receiving tube lay respectively at the both sides of U-shaped groove, and forms an optical axis, and in the time of the object to be detected U-shaped groove of process and blocking-up optical axis, optoelectronic switch has just produced the switching value signal detecting.The more safe and reliable applicable detection of slot type optoelectronic switch changes at a high speed, differentiates transparent and translucent object.Elevator is commonly used this type of optoelectronic switch.
In order to improve as far as possible detection range, the transmitting tube of slot type optoelectronic switch and receiving tube are arranged on the edge of U-shaped slot shell mostly, are convenient to also can be detected in the time of object to be detected small volume.The patent documentation that is CN202818256U as notification number discloses for a kind of photoelectric switch, comprise optoelectronic switch, light shielding block, pcb board, described optoelectronic switch is located on described pcb board, described optoelectronic switch takes the shape of the letter U, described U-shaped one end is provided with infrared emission tube, and the described U-shaped other end is provided with infrared receiver tube.In the said apparatus course of work, in the time that described light shielding block is between optoelectronic switch U-shaped two ends, the infrared ray of described infrared emission tube transmitting is covered by light shielding block, and described infrared receiver tube cannot receive; When described light shielding block is when shifting out between optoelectronic switch U-shaped two ends, the infrared ray of described infrared emission tube transmitting can be received by infrared receiver tube smoothly; Thereby realize the detection to detected material.But the transmitting tube of the optoelectronic switch of said structure and receiving tube are arranged on the edge of housing, receiving tube is easily subject to the interference of reflection ray or extraneous light, thereby causes the accuracy and the reliability that detect.
Existing optoelectronic switch is disturbed by exterior light easily, exists misconnection to receive, and the hidden danger of mistake reflection makes optoelectronic switch generation misoperation, makes apparatus for controlling elevator level position can not accurately be detected, thereby occurs that elevator closes people or the security incident such as rush to summit.
Utility model content
The utility model provides a kind of jamproof optoelectronic switch, to solve existing optoelectronic switch in order to improve test specification, the edge that transmitting tube and receiving tube is arranged on to housing causes receiving tube easily by the problem of direct projection and reflection ray and the impact of external interference light.
A kind of jamproof optoelectronic switch, comprise housing, circuit element is housed in housing, in described circuit element, be provided with infrared transmitting circuit and the infrared receiving circuit of mutual coupling, housing is provided with positioned opposite and in order to emission port and receiving port in infrared transmitting circuit and infrared receiving circuit formation optical coupling, described housing is with laying respectively at the outer peripheral veiling glare stop part of receiving port and emission port.
Described veiling glare stop part, mainly for stopping the veiling glare that enters receiving port, is avoided producing and is disturbed.The angle of this type of veiling glare and optical axis is conventionally less, is easily received by infrared receiving tube, and interference is stronger, makes the signal of generation inaccurate.
In above-mentioned veiling glare, the part of spontaneous loophole side directive receiving port side can be launched a mouthful outer peripheral veiling glare stop part and stop; The part of disturbing through reflection generation from receiving port side directive emission port side can be received a mouthful outer peripheral veiling glare stop part and stop.Thereby realize veiling glare stop part to the stopping of veiling glare, reduce the interference of veiling glare to infrared receiving tube, improve the accuracy of optoelectronic switch.
On the whole, all there is around the light tight body of receiving port and the outside radiation formation of emission port the effect that stops above-mentioned veiling glare.And receiving port and emission port are arranged on the edge of housing, therefore need to described veiling glare stop part be set at receiving port and emission port outward flange.
For connection and reasonable arrangement, preferred, the U-shaped structure that described housing is hollow, emission port and receiving port are in respectively in the two opposite side walls of U-shaped structure.
The two opposite side walls of described U-shaped structure comprises respectively body part, and described veiling glare stop part is convexly equipped with the outward flange at corresponding body part.
The outward flange outside (away from the bottom of U-shaped structure) that is described body part extends to form described veiling glare stop part.
The veiling glare stop part more than arranging is convexly equipped with and is having the outward flange of body part of receiving port and emission port, thereby realizes stopping of direct projection to entering receiving port or reflection veiling glare.
Moulding and the demoulding when manufacturing, preferred, between the outward flange of described body part and corresponding veiling glare stop part, be provided with transition shoulder, described emission port and receiving port are in respectively corresponding transition shoulder place.
Further preferred, described veiling glare stop part has the outline of arc.
In order to improve interference free performance of the present utility model, preferred, the infrared transmitting tube in described infrared transmitting circuit is parallel with diverter branch, in this diverter branch, is provided with switch, and the output of described infrared receiving circuit is connected to the control end of described switch.
During due to normal reception condition, can normally receive in order to ensure infrared receiving tube, infrared light emission intensity is generally all stronger, if but in the time that the light path of Infrared is obstructed, the intensity of Infrared is still stronger, easily enters infrared receiving tube by reflection misoperation occurs.
By the setting of above-mentioned diverter branch, in the time that light path is obstructed, switch opens described in the output control of infrared receiving circuit, diverter branch is communicated with, infrared transmitting circuit is shunted, and the electric current of infrared transmitting tube reduces, thereby reduces the intensity of Infrared, not only increase infrared emission tube lifetime, also avoided crossing strong reflection because of self infrared light emission intensity simultaneously and caused infrared receiving tube to receive light signal and produce the problem of misoperation.
Not only can reduce the intensity of Infrared by diverter branch, can also reduce the power output of infrared transmitting tube, effectively fall low-energy consumption, there is energy-conservation effect.
Preferably, the infrared transmitting tube in described infrared transmitting circuit, and be respectively equipped with light-guiding pillar on infrared receiving tube in infrared receiving circuit, the end of two light-guiding pillars extends to respectively described emission port and receiving port.By light-guiding pillar, light is conducted, can make infrared transmitting tube and the infrared receiving tube layout on circuit more flexible, also make the layout of the each circuit element in housing and installation more reasonable.
In order better to observe operating state, to find fault and maintenance, preferred, in described infrared receiving circuit, be provided with signal lamp, this signal lamp is inlaid in a side of described housing.
In order to reduce the light that enters receiving port to the interference of infrared receiving circuit, preferred, in described housing, be provided with the shielded metal sheet that covers described infrared receiving circuit, this shielded metal sheet is with the light hole corresponding with infrared receiving tube position.
The beneficial effects of the utility model:
Jamproof optoelectronic switch of the present utility model, by receiving port and the outer peripheral veiling glare stop part of emission port, thereby stops that veiling glare enters in receiving port, reduces the interference of veiling glare, improves the accuracy of optoelectronic switch.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model.
Fig. 2 is structure explosive view of the present utility model.
Embodiment
As depicted in figs. 1 and 2, the jamproof optoelectronic switch of the present embodiment comprises: housing 1 and be arranged on the circuit element in housing 1, housing 1 is plastic material, be bonded into by supersonic welding by upper shell 13 and lower house 14, the symmetrically arranged U-shaped structure that upper shell 13 is hollow, emission port 11 and receiving port 12 are in respectively in the two opposite side walls of U-shaped structure.
The two opposite side walls of U-shaped structure all comprises respectively body part 15, the top semicircular in shape of body part 15, veiling glare stop part 4 is convexly equipped with the top outer edge place at corresponding body part 15, and veiling glare stop part 4 is for having the semicircular ring adapting with the semi-circular top of body part 15.Between body part 15 and corresponding veiling glare stop part 4, be provided with transition shoulder 16, emission port 11 and receiving port 12 are in respectively corresponding transition shoulder 16 places.
The veiling glare of spontaneous loophole 11 side directive receiving port 12 sides can be arranged on the outer peripheral veiling glare stop part 4 of emission port 11 to be stopped; The part of disturbing through reflection generation from receiving port 12 side directive emission port 11 sides can be received mouthful 12 outer peripheral veiling glare stop parts 4 and stop.Thereby realize veiling glare stop part 4 to the stopping of veiling glare, reduce the veiling glare that enters receiving port 12, improve the accuracy of optoelectronic switch.
Circuit element comprises infrared transmitting circuit and the infrared receiving circuit of mutual coupling, and infrared transmitting circuit comprises infrared transmitting tube 2 and the circuit element matching, and in like manner infrared receiving circuit comprises infrared receiving tube 3 and the circuit element matching,
On infrared transmitting tube 2 and infrared receiving tube 3, be separately installed with light-guiding pillar 21 and light-guiding pillar 31, and in light-guiding pillar 21 is installed respectively the relative hollow structure of U-shaped structure two with light-guiding pillar 31, end extends to corresponding emission port 11 and receiving port 12, emission port 11 and receiving port 12 positioned opposite, in order to form optical coupling at infrared transmitting circuit and infrared receiving circuit.
In housing 1, be provided with the circuit board 5 for cloth circuits, circuit board 5 is arranged on lower house 14, grips or by forms such as buckles by the pressure between upper shell 13 and lower house 14.
Indicator light 6 is also installed on circuit board 5, and upper shell 13 is with the loophole 61 corresponding with indicator light 6 positions, and in order to converge light, at loophole, 61 places can add lens.
In upper shell 13, be provided with the shielded metal sheet 7 that covers infrared receiving circuit, shielded metal sheet 7 is with the light hole 71 corresponding with infrared receiving tube 3 positions, and light-guiding pillar 31 is through light hole 71.Shielded metal sheet 7 is protected infrared receiving circuit, and shielding enters the light of receiving port 12 to the interference of infrared receiving circuit.
On circuit, the infrared transmitting tube 2 in infrared transmitting circuit is parallel with diverter branch, in this diverter branch, is provided with switch, can adopt triode etc., the output control switch opening and closing of infrared receiving circuit.
By the setting of above-mentioned diverter branch, in the time that optical coupling is obstructed, the output control switch of infrared receiving circuit is communicated with diverter branch, and infrared transmitting tube 2 infrared transmitting circuits are shunted, the operating current of infrared transmitting tube 2 is reduced, thereby reduce the intensity of Infrared.
The jamproof optoelectronic switch reliability of the present embodiment is higher; By at receiving port and the outer peripheral veiling glare stop part of emission port, thereby stop that veiling glare enters in receiving port, reduce the interference of veiling glare, improve the accuracy of optoelectronic switch.
Claims (9)
1. a jamproof optoelectronic switch, comprise housing, circuit element is housed in housing, in described circuit element, be provided with infrared transmitting circuit and the infrared receiving circuit of mutual coupling, housing is provided with positioned opposite so that form emission port and the receiving port of optical coupling between infrared transmitting circuit and infrared receiving circuit, it is characterized in that, described housing is with laying respectively at the outer peripheral veiling glare stop part of receiving port and emission port.
2. jamproof optoelectronic switch as claimed in claim 1, is characterized in that, the U-shaped structure that described housing is hollow, and emission port and receiving port are in respectively in the two opposite side walls of U-shaped structure.
3. jamproof optoelectronic switch as claimed in claim 2, is characterized in that, the two opposite side walls of described U-shaped structure comprises respectively body part, and described veiling glare stop part is convexly equipped with the outward flange at corresponding body part.
4. jamproof optoelectronic switch as claimed in claim 3, is characterized in that, between the outward flange of described body part and corresponding veiling glare stop part, is provided with transition shoulder, and described emission port and receiving port are in respectively corresponding transition shoulder place.
5. the jamproof optoelectronic switch as described in claim as arbitrary in claim 1～4, is characterized in that, described veiling glare stop part has the outline of arc.
6. jamproof optoelectronic switch as claimed in claim 1, it is characterized in that, infrared transmitting tube in described infrared transmitting circuit is parallel with diverter branch, in this diverter branch, is provided with switch, and the output of described infrared receiving circuit is connected to the control end of described switch.
7. jamproof optoelectronic switch as claimed in claim 1, it is characterized in that, on infrared receiving tube in infrared transmitting tube and infrared receiving circuit in described infrared transmitting circuit, be respectively equipped with light-guiding pillar, the end of two light-guiding pillars extends to respectively described emission port and receiving port.
8. jamproof optoelectronic switch as claimed in claim 7, is characterized in that, is provided with the shielded metal sheet that covers described infrared receiving circuit in described housing, and this shielded metal sheet is with the light hole corresponding with infrared receiving tube position.
9. jamproof optoelectronic switch as claimed in claim 1, is characterized in that, in described infrared receiving circuit, is provided with signal lamp, and this signal lamp is inlaid in a side of described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320693806.4U CN203632637U (en) | 2013-11-05 | 2013-11-05 | Anti-interference photoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320693806.4U CN203632637U (en) | 2013-11-05 | 2013-11-05 | Anti-interference photoelectric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203632637U true CN203632637U (en) | 2014-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320693806.4U Expired - Lifetime CN203632637U (en) | 2013-11-05 | 2013-11-05 | Anti-interference photoelectric switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203632637U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199752A (en) * | 2016-06-22 | 2016-12-07 | 浙江众邦机电科技有限公司 | A kind of cloth is by detection device |
| CN107300219A (en) * | 2017-08-16 | 2017-10-27 | 安徽江航爱唯科环境科技有限公司 | A kind of anti-interference infrared remote control air purifier and its anti-interference method |
| CN107483039A (en) * | 2017-08-16 | 2017-12-15 | 温州华侨电器有限公司 | A kind of U-shaped optoelectronic switch |
-
2013
- 2013-11-05 CN CN201320693806.4U patent/CN203632637U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199752A (en) * | 2016-06-22 | 2016-12-07 | 浙江众邦机电科技有限公司 | A kind of cloth is by detection device |
| CN107300219A (en) * | 2017-08-16 | 2017-10-27 | 安徽江航爱唯科环境科技有限公司 | A kind of anti-interference infrared remote control air purifier and its anti-interference method |
| CN107483039A (en) * | 2017-08-16 | 2017-12-15 | 温州华侨电器有限公司 | A kind of U-shaped optoelectronic switch |
| CN107300219B (en) * | 2017-08-16 | 2024-03-12 | 安徽江航爱唯科环境科技有限公司 | Anti-interference infrared remote control air purifier and anti-interference method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
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| CX01 | Expiry of patent term |