CN202978872U - Solid state explosion-proof switch - Google Patents
Solid state explosion-proof switch Download PDFInfo
- Publication number
- CN202978872U CN202978872U CN 201320015284 CN201320015284U CN202978872U CN 202978872 U CN202978872 U CN 202978872U CN 201320015284 CN201320015284 CN 201320015284 CN 201320015284 U CN201320015284 U CN 201320015284U CN 202978872 U CN202978872 U CN 202978872U
- Authority
- CN
- China
- Prior art keywords
- infrared
- light
- slide bar
- button
- resistance
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model relates to a solid sate explosion-proof switch, in particular to an electronic explosion-proof switch. The solid state explosion-proof switch is mainly composed of a light-operated assembly, a press-button and a circuit board, wherein the light-operated assembly is provided with an infrared ray transmitting hole, an infrared ray receiving hole and a square sliding groove, the square sliding groove penetrates between the infrared ray transmitting hole and the infrared ray receiving hole perpendicularly, an infrared ray transmitting tube is mounted in the infrared ray transmitting hole, and an infrared ray receiving tube is mounted in the infrared ray receiving hole. The press-button and a slide bar are connected into a whole, the slide bar extends into the square sliding groove of the light-operated assembly, a light hole is formed in the front portion of the slide bar, and the light hole, the infrared ray transmitting hole and the infrared ray receiving hole are in stagger arrangement. The light-operated assembly and the press-button are used for controlling light-operated signals to trigger a switch, namely to connect or disconnect the switch, and thus non-contacting connection or non-contacting disconnection of a control circuit and a load circuit are realized both. Encapsulated by epoxy resin, the switch has multiple functions of anti-explosion and waterproofing. The solid state explosion-proof switch is safe and reliable, long in service life, suitable for being used in special environment such as fire protection, explosion-proof and waterproofing.
Description
Technical field
The utility model relates to electronic switch, specially refers to a kind of electronic explosion-proof switch.
Background technology
Current, electronic switch is used widely, and greatly facilitates people's work and life.The main feature of electronic non-contact switch is there is no movable contact component, does not occur electric arc or spark during turn-on and turn-off, is swift in motion, and the life-span is long, and reliability is high, is fit to fire prevention, the particular surroundings such as explosion-proof, moistureproof is used.
Chinese patent notification number 2107736U discloses a kind of " Contactless explosion-proof switch ", be connected between the control utmost point G and anode A of ac thyristor by current-limiting resistance by tongue tube, shifted one's position by wearing rod drive permanent magnet by knob, in order to the contact of controlling tongue tube with separate, reach conducting or the cut-off of controlling bidirectional triode thyristor, make the switch loop connect or open, switch deciliter the time no-spark produce.Although this utility model has the characteristics that technique is simple, cost is low, but the tongue tube of its application is contact switch, the glass shell of tongue tube easily breaks, when the glass shell of tongue tube breaks, switch will be damaged maybe can not do the flame-proof switch use, and also there is the shortcoming of poor reliability in tongue tube.
Chinese patent Granted publication CN 2565202Y discloses the utility model patent of a kind of " Zero voltage contactless explosion-proof switch ", formed by semiconductor device pressure transducer, amplitude limiter circuit, voltage follower, comparator, trigger, coupler, zero cross detection circuit and power electronic element, by make voltage signal of its output by piezoelectric ceramic, through amplitude limiter circuit, its signal voltage is limited to 0.7V and is used for the trigger switch opening and closing with interior, realized the contactless control of control loop and load circuit.This utility model adopts pressure signal to trigger, solved the drawback that mechanical contact is still arranged in control circuit, but the shortcoming that exists is that circuit easily produces false triggering, because piezoelectric ceramic has highstrung characteristic, can convert sound wave and faint mechanical oscillation to the signal of telecommunication, the signal amplitude that thunder, vehicle noise and ground vibration produce will make the comparator of circuit hard to distinguish between the true and false, and therefore, this switch easily is interfered and causes to open by mistake and open or cut out by mistake.
The utility model content
The utility model be to provide a kind of safe and reliable, not fragile, can not produce to open by mistake and open or the mistake Contactless explosion-proof switch of closing, be fit to the particular surroundingss such as fire prevention, explosion-proof, waterproof and use.
a kind of solid-state flame-proof switch of the present utility model, mainly formed by switch panel (11), light-operated assembly (12), button (15), slide bar (17), helical spring (14), wiring board (1), electronic component and back cover (10), wherein, light-operated assembly (12) and electronic component are arranged on wiring board (1), wiring board (1) is arranged in back cover (10), and back cover (10) is arranged on switch panel (11), there is circular hole at the center of switch panel (11), and the inboard of switch panel (11) is useful on the screw that back cover (10) is installed, light-operated assembly (12) is rectangular structure, infrared emitting hole (6) is arranged on light-operated assembly (12), infrared receiving aperture (8) and square hole chute (7), infrared emitting hole (6) and infrared receiving aperture (8) be corresponding the setting linearly, square hole chute (7) vertically passes between infrared emitting hole (6) and infrared receiving aperture (8), installation infrared line transmitting tube (VD4) in infrared emitting hole (6), infrared emission tube (VD4) points to infrared receiving aperture (8), installation infrared line receiving tube (VD5) in infrared receiving aperture (8), infrared receiver tube (VD5) is towards infrared emitting hole (6), button (15) and slide bar (17) are connected as a single entity, button (15) is the circle structure, button (15) stretches out from the center hole of switch panel (11), slide bar (17) is cube structure, slide bar (17) extend in the square hole chute (7) of light-operated assembly (12), the front portion of slide bar (17) is inserted between infrared emitting hole (6) and infrared receiving aperture (8), there is loophole (13) front portion of slide bar (17), shift to install between loophole (13) and infrared emitting hole (6) and infrared receiving aperture (8), when pressing the button (15), loophole (13) and infrared emitting hole (6) and infrared receiving aperture (8) be coordination linearly, light is passed through, when button (15) when setting back, the light tight body of rod of slide bar (17) is every between outside line launch hole (6) and infrared receiving aperture (8), stop that light passes through, helical spring (14) is the back-moving spring of button (15), and helical spring (14) is arranged on the rear portion of slide bar (17), the compression travel of helical spring (14) at the tail end of slide bar (17) between the end face of light-operated assembly (12),
the electronic component that is arranged on wiring board (1) comprises: rectifier diode a(VD1), rectifier diode b(VD2), voltage-stabiliser tube (VD3), dropping resistor (R1), current-limiting resistance (R2), discharge resistance (R3), be close to road resistance a(R4), be close to road resistance b(R5), drive resistance (R6), decompression capacitor (C1), filtering capacitor (C2), pulse capacitor (C3), anti-interference condenser (C4), d type flip flop (IC), triode (VT) and bidirectional triode thyristor (VS), the pin leads of infrared emission tube (VD4) and infrared receiver tube (VD5) is connected on wiring board (1), the connected mode of circuit is:
In the utility model, bulge loop (16) is arranged on button (15), bulge loop (16) makes button (15) spacing on switch panel; The width of slide bar (17) is greater than the diameter of infrared emitting hole (6) and infrared receiving aperture (8).
In the utility model, adopt epoxy resin wiring board (1) and electronic package in back cover (10), can guarantee can not make electronic component smolder, burst, thereby can not cause the breaking out of fire of inflammable and explosive place and explosion accident when contingency switch itself damages.
in foregoing circuit, dropping resistor (R1) and decompression capacitor (C1) consist of reduction voltage circuit, rectifier diode a(VD1) and rectifier diode b(VD2) consist of the Half bridge rectifier circuit, filtering capacitor (C2) and voltage-stabiliser tube (VD3) consist of filter circuit of pressure-stabilizing,～220V power supply is after step-down, rectification and voltage regulation filtering, the circuit that offers in switch as working power uses, in circuit, the use of connecting of dropping resistor (R1) and decompression capacitor (C1) can avoid decompression capacitor (C1) be subject to rush of current and damage, use infrared emission tube (VD4) and infrared receiver tube (VD5) to realize light-operated operation, pulse capacitor (C3) is set in circuit, make light-operated operation signal become pulse signal, simultaneously, pulse capacitor (C3) also has anti-shake effect, because after pulse capacitor (C3) produces a pulse, capacitor (C3) must discharge electric charge just by release resistance (R3) can produce pulse again, in at this moment, any shake during action button (15) can not make pulse capacitor (C3) produce pulse, d type flip flop (IC) connects into the bistable trigger mode, when having the rising edge pulse to be input to the CP end of d type flip flop (IC), will make the Q output level upset of d type flip flop (IC), control bidirectional triode thyristor (VS) conducting or cut-off, CP input at d type flip flop (IC) arranges anti-interference condenser (C4), be low level to making the CP input of d type flip flop (IC) after capacitor (C4) charging, only have after the CP input of d type flip flop (IC) becomes low level, the rising edge pulse just can make the Q output level upset of d type flip flop (IC), in any interference signal of capacitor (C4) in the charging interval, the Q output level of d type flip flop (IC) is overturn, stable being operated in of switch opened or closed condition.switch is between the operating period, be in off state as switch, in the time of need opening switch, click button (15), make linearly coordination of the anterior loophole (13) of slide bar (17) and infrared emitting hole (6) and infrared receiving aperture (8), the infrared light emission of infrared emission tube (VD4) is to infrared receiver tube (VD5), make infrared receiver tube (VD5) reverse-conducting, make pulse capacitor (C3) produce the base stage that pulse signal is input to triode (VT), make triode (VT) conducting, anti-interference condenser (C4) is by triode (VT) repid discharge, make the CP input of d type flip flop (IC) obtain the rising edge triggering signal, the Q output output driving current of d type flip flop (IC), be input to the control utmost point of bidirectional triode thyristor (VS) by driving resistance (R6), make bidirectional triode thyristor (VS) conducting, load switches on power, after release button (15), switch still keeps opening state, during as the need closing switch, again click button (15), can make again the CP input of d type flip flop (IC) obtain the rising edge triggering signal and the Q output level of d type flip flop (IC) is overturn, bidirectional triode thyristor (VS) is turn-offed, the load deenergization.
In above-mentioned utility model, described load is illuminating lamp and low power electric appliance; Described external power is the mains supply of alternating current 220V.
The beneficial effects of the utility model are: utilize light-operated assembly (12) and button slide bar (17) operation optically-controlled signal to come the trigger switch turn-on and turn-off, simple in structure, reliable operation can not make the switch generation open by mistake and open or the mistake shutoff operation; Use bidirectional triode thyristor (VS) element, all realize contactless being switched on or switched off at control loop and load circuit, the switch internal circuit does not have actuating mechanism, makes switch not fragile; Adopt epoxy encapsulation, make switch have explosion-proof waterproof multi-functional.Compared with prior art, solid-state flame-proof switch safety and reliability of the present utility model, longer service life is more suitable for using in particular surroundingss such as fire prevention, explosion-proof, waterproof.
Description of drawings
Fig. 1 is a kind of solid-state flame-proof switch structure chart of the present utility model.
Fig. 2 is a kind of electronic type flame-proof switch circuit diagram of the present utility model.
in figure: 1. wiring board, 6. infrared emitting hole, 7. square hole chute, 8. infrared receiving aperture, 10. back cover, 11. switch panel, 12. light-operated assembly, 13. loophole, 14. helical spring, 15. button, 16. the bulge loop of button, 17. slide bar, 18. epoxy encapsulation layer, VD1. rectifier diode a, VD2. rectifier diode b, VD3. voltage-stabiliser tube, VD4. infrared emission tube, VD5. infrared receiver tube, R1. dropping resistor, R2. current-limiting resistance, R3. discharge resistance, R4. be close to road resistance a, R5. be close to road resistance b, R6. drive resistance, C1. decompression capacitor, C2. filtering capacitor, C3. pulse capacitor, C4. anti-interference condenser, the IC.D trigger, VT. triode, VS. bidirectional triode thyristor, H. illuminating lamp, L1. terminal stud a, L2. terminal stud b, N1. terminal stud c.
Embodiment
in execution mode illustrated in figures 1 and 2, solid-state flame-proof switch mainly is comprised of switch panel (11), light-operated assembly (12), button (15), slide bar (17), helical spring (14), wiring board (1), electronic component and back cover (10), wherein, light-operated assembly (12) and electronic component are arranged on wiring board (1), wiring board (1) is arranged in back cover (10), adopt epoxy resin wiring board (1) and electronic package in back cover (10), back cover (10) is arranged on switch panel (11), there is circular hole at the center of switch panel (11), and the inboard of switch panel (11) is useful on the screw that back cover (10) is installed, light-operated assembly (12) is rectangular structure, infrared emitting hole (6) is arranged on light-operated assembly (12), infrared receiving aperture (8) and square hole chute (7), infrared emitting hole (6) and infrared receiving aperture (8) be corresponding the setting linearly, square hole chute (7) vertically passes between infrared emitting hole (6) and infrared receiving aperture (8), installation infrared line transmitting tube (VD4) in infrared emitting hole (6), infrared emission tube (VD4) points to infrared receiving aperture (8), installation infrared line receiving tube (VD5) in infrared receiving aperture (8), infrared receiver tube (VD5) is towards infrared emitting hole (6), the pin leads of infrared emission tube (VD4) and infrared receiver tube (VD5) is connected on wiring board (1), button (15) and slide bar (17) are connected as a single entity, button (15) is the circle structure, button (15) stretches out from the center hole of switch panel (11), bulge loop (16) is arranged on button (15), bulge loop (16) makes button (15) spacing on switch panel, slide bar (17) is cube structure, slide bar (17) extend in the square hole chute (7) of light-operated assembly (12), the front portion of slide bar (17) is inserted between infrared emitting hole (6) and infrared receiving aperture (8), the width of slide bar (17) is greater than the diameter of infrared emitting hole (6) and infrared receiving aperture (8), there is loophole (13) front portion of slide bar (17), shift to install between loophole (13) and infrared emitting hole (6) and infrared receiving aperture (8), when pressing the button (15), loophole (13) and infrared emitting hole (6) and infrared receiving aperture (8) be coordination linearly, light is passed through, when button (15) when setting back, the light tight body of rod of slide bar (17) is every between outside line launch hole (6) and infrared receiving aperture (8), stop that light passes through, helical spring (14) is the back-moving spring of button (15), and helical spring (14) is arranged on the rear portion of slide bar (17), the compression travel of helical spring (14) at the tail end of slide bar (17) between the end face of light-operated assembly (12).
the electronic component that uses in the present embodiment comprises: rectifier diode a(VD1), rectifier diode b(VD2), voltage-stabiliser tube (VD3), infrared emission tube (VD4), infrared receiver tube (VD5), dropping resistor (R1), current-limiting resistance (R2), discharge resistance (R3), be close to road resistance a(R4), be close to road resistance b(R5), drive resistance (R6), decompression capacitor (C1), filtering capacitor (C2), pulse capacitor (C3), anti-interference condenser (C4), d type flip flop (IC), triode (VT) and bidirectional triode thyristor (VS), wherein, rectifier diode a(VD1) and rectifier diode b(VD2) select the silicon rectifier diode of 1N4007, voltage-stabiliser tube (VD3) is selected the silicon voltage regulator diode of 12V/0.25-0.5W, infrared emission tube (VD4) and infrared receiver tube (VD5) are selected the silicone tube of diameter 3mm, dropping resistor (R1) is selected the carbon resistance film of 47 Ω/1W, current-limiting resistance (R2) is selected the metalfilmresistor of 2K Ω/0.5W, discharge resistance (R3) and select the carbon resistance film of 47 K Ω/0.25W, be close to road resistance a(R4) and be close to road resistance b(R5) select the carbon resistance film of 4.7K Ω/0.25W, drive resistance (R6) and select the carbon resistance film of 1K Ω/1W, decompression capacitor (C1) is selected the polypropylene film capacitor of 0.22uF/630V, filtering capacitor (C2) is selected the electrolytic capacitor of 100uF/25V, pulse capacitor (C3) is selected the ceramic disc capacitor device of 2000P/25V, anti-interference condenser (C4) is selected the ceramic disc capacitor device of 0.022uF/25V, d type flip flop (IC) is selected the two rising edge d type flip flops of the CD4013 of CMOS, triode (VT) is selected the S9013 silicon triode of NPN type, bidirectional triode thyristor (VS) is selected the bidirectional triode thyristor of 1A/600V.
The circuit connecting mode of the present embodiment is:
Rectifier diode a(VD1) anodic bonding is to the ground end, rectifier diode a(VD1) negative electrode is connected to rectifier diode b(VD2) anode, rectifier diode b(VD2) negative electrode be connected respectively to the vdd terminal of d type flip flop (IC), the positive pole of anti-interference condenser (C4), the collector electrode of triode (VT), the negative electrode of infrared receiver tube (VD5), the anode of infrared emission tube (VD4), the negative electrode of voltage-stabiliser tube (VD3) and the positive pole of filtering capacitor (C2); The anodic bonding of the negative pole of filtering capacitor (C2) and voltage-stabiliser tube (VD3) is to the ground end; The negative electrode of infrared emission tube (VD4) is connected to an end of current-limiting resistance (R2), and the other end of current-limiting resistance (R2) is held with being connected to; The anode of infrared receiver tube (VD5) is connected respectively to an end of release resistance (R3) and an end of pulse capacitor (C3), the other end that discharges resistance (R3) is held with being connected to, the other end of pulse capacitor (C3) is connected respectively to the base stage of triode (VT) and is close to road resistance a(R4) an end, be close to road resistance a(R4) the other end hold with being connected to; The emitter of triode (VT) be connected respectively to anti-interference condenser (C4) negative pole, d type flip flop (IC) the CP end and be close to road resistance b(R5) an end, be close to road resistance b(R5) the other end hold with being connected to; The S of d type flip flop (IC) end, R end and VSS end end with being connected to, and the D of d type flip flop (IC) holds and is connected to d type flip flop (IC)
End; The Q end of d type flip flop (IC) is connected to an end that drives resistance (R6), the other end that drives resistance (R6) is connected to the control utmost point of bidirectional triode thyristor (VS), the negative electrode of bidirectional triode thyristor (VS) is held with being connected to, and the anodic bonding of bidirectional triode thyristor (VS) is to terminal stud b(L2) on; Rectifier diode a(VD1) negative electrode and rectifier diode b(VD2) anodic bonding to an end of dropping resistor (R1), the other end of dropping resistor (R1) is connected to an end of decompression capacitor (C1), and the other end of decompression capacitor (C1) is connected to terminal stud c(N1) on; The ground end is connected to terminal stud a(L1) on; Switch is by terminal stud a(L1), terminal stud b(L2) and terminal stud c(N1) be connected on outer circuit terminal stud b(L2) be connected to an end of load, the other end of load is connected to～neutral line (N) of 220V power supply on; Terminal stud c(N1) be connected to～neutral line (N) of 220V power supply on; Terminal stud a(L1) be connected to～phase line (L) of 220V power supply on.
Claims (4)
1. solid-state flame-proof switch, it is characterized in that switch mainly is comprised of switch panel (11), light-operated assembly (12), button (15), slide bar (17), helical spring (14), wiring board (1), electronic component and back cover (10), wherein, light-operated assembly (12) and electronic component are arranged on wiring board (1), wiring board (1) is arranged in back cover (10), and back cover (10) is arranged on switch panel (11), there is circular hole at the center of switch panel (11), and the inboard of switch panel (11) is useful on the screw that back cover (10) is installed, light-operated assembly (12) is rectangular structure, infrared emitting hole (6) is arranged on light-operated assembly (12), infrared receiving aperture (8) and square hole chute (7), infrared emitting hole (6) and infrared receiving aperture (8) be corresponding the setting linearly, square hole chute (7) vertically passes between infrared emitting hole (6) and infrared receiving aperture (8), installation infrared line transmitting tube (VD4) in infrared emitting hole (6), infrared emission tube (VD4) points to infrared receiving aperture (8), installation infrared line receiving tube (VD5) in infrared receiving aperture (8), infrared receiver tube (VD5) is towards infrared emitting hole (6), button (15) and slide bar (17) are connected as a single entity, button (15) is the circle structure, button (15) stretches out from the center hole of switch panel (11), slide bar (17) is cube structure, slide bar (17) extend in the square hole chute (7) of light-operated assembly (12), the front portion of slide bar (17) is inserted between infrared emitting hole (6) and infrared receiving aperture (8), there is loophole (13) front portion of slide bar (17), shift to install between loophole (13) and infrared emitting hole (6) and infrared receiving aperture (8), when pressing the button (15), loophole (13) and infrared emitting hole (6) and infrared receiving aperture (8) be coordination linearly, light is passed through, when button (15) when setting back, the light tight body of rod of slide bar (17) is every between outside line launch hole (6) and infrared receiving aperture (8), stop that light passes through, helical spring (14) is the back-moving spring of button (15), and helical spring (14) is arranged on the rear portion of slide bar (17), the compression travel of helical spring (14) at the tail end of slide bar (17) between the end face of light-operated assembly (12),
the electronic component that is arranged on wiring board (1) comprises: rectifier diode a(VD1), rectifier diode b(VD2), voltage-stabiliser tube (VD3), dropping resistor (R1), current-limiting resistance (R2), discharge resistance (R3), be close to road resistance a(R4), be close to road resistance b(R5), drive resistance (R6), decompression capacitor (C1), filtering capacitor (C2), pulse capacitor (C3), anti-interference condenser (C4), d type flip flop (IC), triode (VT) and bidirectional triode thyristor (VS), the pin leads of infrared emission tube (VD4) and infrared receiver tube (VD5) is connected on wiring board (1), the connected mode of circuit is:
2. a kind of solid-state flame-proof switch according to claim 1, is characterized in that bulge loop (16) is arranged on button (15), and bulge loop (16) makes button (15) spacing on switch panel.
3. a kind of solid-state flame-proof switch according to claim 1, is characterized in that the width of slide bar (17) is greater than the diameter of infrared emitting hole (6) and infrared receiving aperture (8).
4. a kind of solid-state flame-proof switch according to claim 1, it is characterized in that adopting epoxy resin wiring board (1) and electronic package in back cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015284 CN202978872U (en) | 2013-01-13 | 2013-01-13 | Solid state explosion-proof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015284 CN202978872U (en) | 2013-01-13 | 2013-01-13 | Solid state explosion-proof switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978872U true CN202978872U (en) | 2013-06-05 |
Family
ID=48519890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015284 Withdrawn - After Issue CN202978872U (en) | 2013-01-13 | 2013-01-13 | Solid state explosion-proof switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978872U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066979A (en) * | 2013-01-13 | 2013-04-24 | 衢州昀睿工业设计有限公司 | Solid explosion-proof switch |
| CN103474273A (en) * | 2013-09-23 | 2013-12-25 | 郝小妮 | Optical crystal type mechanical switch |
| US11239652B2 (en) | 2018-12-26 | 2022-02-01 | Eaton Intelligent Power Limited | Compliant, hazardous environment circuit protection devices, systems and methods |
| US11270854B2 (en) | 2018-12-26 | 2022-03-08 | Eaton Intelligent Power Limited | Circuit protection devices, systems and methods for explosive environment compliance |
| US11303111B2 (en) | 2018-12-26 | 2022-04-12 | Eaton Intelligent Power Limited | Configurable modular hazardous location compliant circuit protection devices, systems and methods |
| US11613915B2 (en) | 2018-12-26 | 2023-03-28 | Eaton Intelligent Power Limited | Mechanical lockout for non-mechanical-interfacing electronic switch |
| US11615925B2 (en) | 2018-12-26 | 2023-03-28 | Eaton Intelligent Power Limited | Hazardous location compliant circuit protection devices having enhanced safety intelligence, systems and methods |
-
2013
- 2013-01-13 CN CN 201320015284 patent/CN202978872U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066979A (en) * | 2013-01-13 | 2013-04-24 | 衢州昀睿工业设计有限公司 | Solid explosion-proof switch |
| CN103066979B (en) * | 2013-01-13 | 2015-02-11 | 衢州昀睿工业设计有限公司 | Solid explosion-proof switch |
| CN103474273A (en) * | 2013-09-23 | 2013-12-25 | 郝小妮 | Optical crystal type mechanical switch |
| US11239652B2 (en) | 2018-12-26 | 2022-02-01 | Eaton Intelligent Power Limited | Compliant, hazardous environment circuit protection devices, systems and methods |
| US11270854B2 (en) | 2018-12-26 | 2022-03-08 | Eaton Intelligent Power Limited | Circuit protection devices, systems and methods for explosive environment compliance |
| US11303111B2 (en) | 2018-12-26 | 2022-04-12 | Eaton Intelligent Power Limited | Configurable modular hazardous location compliant circuit protection devices, systems and methods |
| US11613915B2 (en) | 2018-12-26 | 2023-03-28 | Eaton Intelligent Power Limited | Mechanical lockout for non-mechanical-interfacing electronic switch |
| US11615925B2 (en) | 2018-12-26 | 2023-03-28 | Eaton Intelligent Power Limited | Hazardous location compliant circuit protection devices having enhanced safety intelligence, systems and methods |
| US11967478B2 (en) | 2018-12-26 | 2024-04-23 | Eaton Intelligent Power Limited | Circuit protection devices, systems and methods for explosive environment compliance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202978872U (en) | Solid state explosion-proof switch | |
| CN203014768U (en) | Non-contact button switch for controlling work in positive direction and negative direction | |
| CN202332733U (en) | Switching value isolation circuit for relay | |
| CN202906133U (en) | Leakage protective socket | |
| CN103066979B (en) | Solid explosion-proof switch | |
| CN201750009U (en) | Household appliance leakage protection socket | |
| CN210927587U (en) | Anti-impact high-power electronic switch circuit | |
| CN103852676A (en) | Passive contact detection device and method | |
| CN202513891U (en) | Jitter-prevention electronic switch | |
| CN204442804U (en) | A kind of illuminator based on piezoelectric transducer | |
| CN106601549A (en) | DC relay protection control method and circuit | |
| CN114156996A (en) | Ignition clamp, starting power supply and starting device | |
| CN203984385U (en) | A kind of high withstand voltage solid-state relay | |
| CN103138726B (en) | Non-contact reversing button switch | |
| CN209056927U (en) | TV antistatic circuit | |
| CN208691605U (en) | The ON-OFF control circuit of LED | |
| CN105403756A (en) | Circuit device having ground wire live detection function | |
| CN205160847U (en) | Switch control circuit | |
| CN205280807U (en) | Circuit arrangement with electrification of ground wire detects function | |
| CN109656170A (en) | Inclination triggering driving circuit and electronic product | |
| CN219085488U (en) | Pressure trigger alarm | |
| CN217883389U (en) | Random-triggering solid-state relay | |
| CN204304499U (en) | A kind of battery quiescent current breaking circuit | |
| CN203722902U (en) | High/low-voltage withdrawal automatic switching circuit for high-voltage electronic pulse detector | |
| CN209327818U (en) | A kind of fuel burning cyclelog |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20150211 |
|
| RGAV | Abandon patent right to avoid regrant |