A kind of pressure cut-off device and the electric pressure cooking saucepan including the deviceTechnical field
The present invention relates to a kind of pressure cut-off structure, more particularly to a kind of pressure cut-off device and the voltage including the devicePower pot.
Background technology
Pressure cooker at work, due to that can cause internal pressure abnormal when its safety member fails, to realize its safety,It needs to cut off heating power supply in time.
Currently, the Chinese patent of Publication No. CN203953296U in the market discloses a kind of pressure switch, including：It opensClose seat；Shrapnel is touched, the shake-up shrapnel is the cantilever shape being located on the switch base；Pressure shrapnel, the pressure shrapnelFor the cantilever shape being located on the switch base, the pressure shrapnel is equipped with movable contact；Stationary contact shrapnel, the stationary contact areThe cantilever shape being located on the switch base, the stationary contact shrapnel between the pressure shrapnel and the shake-up shrapnel,And the stationary contact shrapnel is equipped with the stationary contact opposite with the movable contact, and the stationary contact often connects with the movable contactIt touches；The shake-up connecting rod that can push the pressure shrapnel that the movable contact is made to be detached with the stationary contact, the shake-up connecting rod are located atBetween the pressure shrapnel and the shake-up shrapnel；Anti- reseting shrapnel, the anti-reseting shrapnel are configured in the movable contactThe pressure shrapnel is resisted when being detached with the stationary contact makes the movable contact and the stationary contact keep the shape detached.
Realization principle is：When pressure is more than the power-off pressure that setting value reaches pressure switch, touches connecting rod and push pressureShrapnel, when pressure shrapnel deforms upon, the free end of movable contact shrapnel moves up, while movable contact and stationary contact separation, andMovable contact shrapnel is across after anti-reseting shrapnel, and anti-reseting shrapnel is against on the lower surface of movable contact shrapnel, so that movable contactIt keeps detaching with stationary contact.
In said program, by the movement for touching connecting rod, movable contact and stationary contact be gradually disengaged, the process breaking speed compared withSlowly, and then corresponding electrical connection cannot be disconnected in time, there are security risks.
Invention content
The first object of the present invention is to provide a kind of pressure cut-off device, its advantage is that with quick disjunction movable contact, quietThe ability of contact electrical connection.
The present invention above-mentioned technical purpose technical scheme is that：A kind of pressure cut-off device, packetPedestal is included, the pedestal is equipped with movable contact spring and static contact for electrical connection, and the movable contact spring is equipped with and static contact elasticityThe elastic piece of conflict；The pedestal is equipped with swing component, the linkage swing component rotation that rotation linkage elastic piece is detached with static contactTorsional spring；The pedestal is equipped with the promotion for making the clamping block of torque spring energy store for being clamped torsional spring, torsional spring being pushed to be detached from clamping blockPart.
Through the above technical solutions, impeller is contradicted with torsional spring, and when impeller is gradually lifted, the card of torsional spring and clamping blockIt connects position gradually to move up, and eventually disengages from clamping relationship；Torsional spring release elastic potential energy quickly elapses swing component at this time, and then putsMoving part linkage elastic piece, elastic deformation occurs for elastic piece, while elastic piece is detached from electrical connection with static contact；The process will push awayThe linear movement process of moving part is changed into the conflict position progressive formation of torsional spring and clamping block, and card is moved to and if only if torsional springWhen connecing the corner of block, the constraint of torsional spring is released from, and generates rapidly mobile, linkage swing component quick rotation so that elastic pieceWith the quick disjunction of static contact, plays for electric appliance and fast and accurately power off, improve safety.
The present invention is further arranged to：The pedestal is equipped with intake interface, the sealing ring for sealing intake interface, usesIn the positioning seat for compressing sealing ring, positioning seat is equipped with passes through the straight slot contradicted to sealing ring for impeller.
Through the above technical solutions, the intake interface on pedestal is passed through for steam, since sealing ring is compressed by positioning seat,Gas pressure intensity makes sealing ring deformation, and when sealing ring deformation pushes impeller；The process converts the kinetic energy of steam to sealing ringIntuitive deformation process, intake interface are equivalent to the detection mouth of steam pressure, realize the detection of steam pressure；And impeller is wornIt crosses straight slot to contradict with sealing ring, straight slot constrains the horizontal moving ranges of impeller so that is not easy to put when impeller moves up and downIt is dynamic, improve impeller straight skidding stability.
The present invention is further arranged to：The lateral wall of the impeller is equipped with sliding shoe and pushing block, the positioning seatIt is equipped with the sliding slot for sliding shoe or pushing block sliding and position limitation, the pushing block slides along sliding slot and pushes torsional spring.
Through the above technical solutions, movement of the movement of impeller along with pushing block and sliding shoe, sliding slot can be used asThe sliding rail of pushing block and sliding shoe, improves the straight skidding stability of impeller, and avoids impeller in upper downslideRotation during shifting；After torsional spring is caught in clamping block, the outwardly extending length of pushing block is longer, and pushing block can drive torsional springOne end is moved out clamping block.
The present invention is further arranged to：Include the upper cover with base engagement, the upper cover is equipped with close to the side of swing componentReset hole, the reset hole run through upper cover side panel, the swing component be equipped with it is corresponding with reset hole, for drive swingPart rotates the resetting block for making torsional spring be caught in clamping block.
Through the above technical solutions, the considerations of in secure context, before being repaired without professional, elastic piece can not be certainlyDynamic reset is electrically connected with static contact, and circuit is in off state；After the completion of debugging and maintenance, the form of hand-reset can be used,Such as draw point penetrates reset hole, draw point is contradicted to resetting block, and swing component rotates and drives clamping position of the torsional spring to clamping block at this timeMovement is set, which translates into the potential energy of torsional spring, when torsional spring is caught in the clamping position of clamping block again, torsional springState in gathering, and elastic piece static contact restores electrical connection, the elastic potential energy of the position torsional spring is larger, can releaseIt gives swing component enough kinetic energy when putting elastic potential energy, improves breaking capacity of the swing component to dynamic and static contact.
The present invention is further arranged to：The upper cover is equipped with the adjusting screw with its screw-thread fit, the impeller and tuneThe first elastic component for squeezing impeller is equipped between section screw.
Through the above technical solutions, when adjusting screw is rotated relative to upper cover, by taking the rotation in one of direction as an example, adjustThe spacing of screw and impeller is reduced, and then the first elastic component is caused to be compressed, and after the first elastic component is compressed, impeller is upwardThe required active force overcome incrementally increases when mobile, corresponds to the required active force of sealing ring deformation and also incrementally increases, thatIt is directed to different gas pressure intensities, the critical power-off point of pressure cut-off device can be adjusted by the rotation of adjusting screw so thatThe steam pressure of electric appliance is in safely controllable range.
The present invention is further arranged to：The positioning seat is equipped with the stairstepping liner plate for coordinating upper cover, the ladderShape liner plate is equipped with gasket, and the pedestal is equipped with the fixed screw of connection positioning seat, gasket and upper cover.
Through the above technical solutions, when positioning seat and upper cover coordinate, gasket is first mounted on to the outer rim of stairstepping liner plateOn, then by upper cover along the outer rim cooperation of stairstepping liner plate, the mating surface being achieved in is ladder-type structure, therefore can be realizedPreferable waterproof effect, and under the cooperation of fixed screw, pedestal, positioning seat, gasket, upper cover realization mutually detachably connectIt connects, improves assembling flexibility；Gasket is elastic material, and then can gradually screw fixed screw, improves sealing effect.
The present invention is further arranged to：The second elastic component for squeezing impeller is arranged on the impeller, it is describedUpper cover is equipped with the positioning column for the socket of the second elastic component.
Through the above technical solutions, the second elastic member presses impeller makes impeller remain that is moved down becomesGesture so that impeller can Rapid reset, when impeller moves up need and meanwhile overcome the first elastic component and the second elastic componentActive force so that push the moving process of key by two decelerative forces, therefore impeller has been moved to double buffering effectFruit avoids impeller movement speed too fast the case where causing torsional spring integrally to move up；On the other hand, an end cap of the second elastic componentOn positioning column, the other end is sleeved on impeller, positioning column reduces the hunting range of the second elastic component, correspondingAlso the hunting range of impeller is constrained so that the longitudinal movement of impeller is more stablized.
The present invention is further arranged to：Mounting plate is fitted on the positioning seat, the swing component connects with mounting plate rotationIt connects.
Through the above technical solutions, first connecting swing component with mounting plate, when outside assembles, swing component has largerOperating space can debug the rotation flexibility of swing component on a mounting board, then mounting plate is inserted into positioning seat, thus simultaneouslyIt is mounted with swing component and mounting plate, it is easy to assembly, additional parts are not necessarily to, when retracting, mounting plate is integrally taken out can bandGo out swing component.
The present invention is further arranged to：The pedestal is equipped with the stairstepping slot for sealing ring insertion installation, described fixedPosition seat is equipped with for engagement trapezoidal socket and compresses the undertaking body of sealing ring outer rim, and the positioning seat is equipped with several connectionsColumn, the pedestal are equipped with the link slot coordinated for connecting pole.
Through the above technical solutions, sealing ring is embedded in stairstepping slot, cooperation tight ness rating is higher, and air-tightness is higher, positioningUndertaking body on seat compresses sealing ring, and undertaking body realizes the pre-installation of positioning seat and pedestal with the cooperation of stairstepping slot, evenColumn and link slot cooperation are connect, realizes the pre-installation of positioning seat and pedestal, positioning seat realizes the connection function formed a connecting link；It is moreThe pre-installation of a position makes the high stability after pedestal and positioning seat cooperation, and has achieved the effect that calibration, further may be usedDirect-assembling fixed screw is completed to fix.
The second object of the present invention is to provide a kind of electric pressure cooking saucepan.
The present invention above-mentioned technical purpose technical scheme is that：A kind of electric pressure cooking saucepan, including it is upperThe pressure cut-off device stated, pressure cut-off device are used to be switched on or switched off the electric power loop of electric pressure cooking saucepan.
Through the above technical solutions, realizing fast break of the pressure cooker under abnormal steam pressure, electric property is stablized,It is safe and reliable.
In conclusion the invention has the advantages that：1, the limit that pressure cut-off device passes through the critical value formula of torsional springSystem so that steam pressure quickly triggers interaction relation when reaching critical value, the electrical connection of movable contact spring and static contact is quickly disconnected, carriedHigh safety and stability；2, the straight slot on positioning seat, sliding slot improve the straight skidding stability of impeller, correspondingImpeller it is more accurate to the force application location of torsional spring；3, the aforementioned regulation and control for disconnecting critical value can be realized using adjusting screw,Required vapour pressure force value when being electrically connected disconnection of static contact and movable contact spring can be regulated and controled for different service conditions.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the structural schematic diagram for removing upper cover of embodiment one；
Fig. 3 is the explosive view of embodiment one；
Fig. 4 is the impeller of embodiment one, torsional spring mounting structure schematic diagram；
Fig. 5 is the sectional view of embodiment one；
Fig. 6 is the explosive view at another visual angle of embodiment one.
Reference numeral：1, pedestal；2, movable contact spring；3, static contact；4, elastic piece；5, swing component；6, torsional spring；7, impeller；8, intake interface；9, sealing ring；10, positioning seat；11, straight slot；12, sliding shoe；13, pushing block；14, sliding slot；15, upper cover；16、Reset hole；17, resetting block；18, adjusting screw；19, the first spring；20, stairstepping liner plate；21, gasket；22, fixed screw；23, second spring；24, positioning column；25, mounting plate；26, stairstepping slot；27, undertaking body；28, connecting pole；29, link slot；30, connector；31, conducting wire；32, boss；33, fixing end；34, end is activated；35, gasket；36, clamping block.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one：Such as Fig. 1 and Fig. 2, a kind of pressure cut-off device, including pedestal 1 and pedestal 1 pass through fixed screw 22The upper cover 15 of connection, the connector 30 for electrical connection, the conducting wires 31 that connector 30 is inserted into including two sections inside upper cover 15, two sectionsConducting wire 31 forms current loop with the circuit inside pressure cut-off device.
In conjunction with Fig. 3, pedestal 1 is equipped with intake interface 8, and the sealing ring 9 of sealing intake interface 8, sealing are embedded on pedestal 1Circle 9 is plastic material, and the positioning seat 10 for compressing sealing ring 9 is additionally provided on pedestal 1, and positioning seat 10 is equipped with straight slot 11, sealing ring 9It is equipped with the boss 32 coordinated with straight slot 11.The action process of sealing ring 9 is：When 8 air inlet of intake interface, gas pressure pushes closeSeal 9, boss 32 are moved up with respect to pedestal 1.
With reference to figure 3 and Fig. 4, it is equipped with impeller 7 in the straight slot 11 of positioning seat 10, impeller 7 can be in the axial direction of straight slot 11Lower sliding, impeller 7 are equipped with sliding shoe 12 and pushing block 13, and positioning seat 10 is equipped with to be slid for sliding shoe 12 or pushing block 13The sliding slot 14 of limit.Torsional spring 6 is installed, torsional spring 6 includes fixing end 33 and actuating end 34, fixing end 33 and positioning on positioning seat 10Seat 10 is fixedly connected, and actuating end 34 is caught in the side of clamping block 36, and torsional spring 6 is in energy storage state at this time.When pushing block 13 graduallyWhen moving up, actuating end 34 is pushed to move up, when actuating end 34 is detached from from the side of clamping block 36, torsional spring 6 discharges elastic potential energy,Actuating end 34 moves right rapidly.It is fitted with mounting plate 25 on positioning seat 10, swing component 5 is rotatably connected on mounting plate 25；It turns roundWhen the actuating end 34 of spring 6 is detached from the limit of clamping block 36, actuating end 34 rotates counterclockwise linkage swing component 5（According to Fig. 3 or figureDirection in 4）.
Positioning seat 10 is equipped with static contact 3 and movable contact spring 2, and the both ends of static contact 3 and movable contact spring 2 respectively with connector 30 are ledLine 31 is electrically connected；Movable contact spring 2 is equipped with elastic piece 4, and elasticity is squeezed with 3 elasticity of static contact, realizes electrical connection；When elastic piece 4 withWhen static contact 3 detaches, movable contact spring 2 is detached from electrical connection with static contact 3.The disjunction of part electrical connection is triggered by swing component 5,When torsional spring 6 links the rotation of swing component 5, swing component 5 pushes elastic piece 4 to be bent downwardly simultaneously, drives 4 quick disjunction of elastic piece.Above-mentioned action process is power process.
With reference to figure 3 and Fig. 6, upper cover 15 is equipped with reset hole 16 close to the side of swing component 5, and reset hole 16 runs through upper cover 15,Swing component 5 is equipped with resetting block corresponding with reset hole 16 17.Reset state can refer to Fig. 2, and non-reset state is：Torsional spring 6Clamping block 36 is had been detached from, swing component 5 rotates counterclockwise, and resetting block 17 moves up, and elastic piece 4 and static contact 3 detach.Shape is not resettedUnder state, usable draw point penetrates reset hole 16, and draw point pushes resetting block 17 to move down, and swing component 5 rotates clockwise（With reference in figure 3Direction）, while swing component 5 pushes the actuating end 34 of torsional spring 6 to be moved along clamping block 36, actuating end 34 keeps left in clamping block 36Side collapse and formed clamping relationship, elastic piece 4 contradicts again with static contact 3, restore electrical connection.Above-mentioned action process is multiplePosition process, reseting procedure must be manually operated, and before being repaired without professional, can not be used again.It can lead to when installation and debuggingCross hand-reset.
With reference to figure 3 and Fig. 5, upper cover 15 is equipped with the adjusting screw 18 being threadedly coupled with it, and impeller 7 is equipped with the first bulletSpring 19 is equipped with gasket 35 between adjusting screw 18 and the first spring 19；Sealing ring 9 also needs to overcome first when pushing impeller 7The elastic acting force of spring 19.When adjusting operation, by screwdriver by 18 turn of adjusting screw, if adjusting screw 18 is to moving downDynamic, gasket 35 and the spacing of impeller 7 reduce, and the first spring 19 increases the active force of impeller 7, corresponding sealing ring 9Boss 32 push the size of power overcome required for impeller 7 to increase, the boss 32 of sealing ring 9 moves up required gas pressureIt is strong to increase.Thus the position of adjusting screw 18 can be adjusted as needed, it is ensured that the power-off pressure of pressure cut-off device is in controllableIn range.Above-mentioned action process is adjustment process.
With reference to figure 5 and Fig. 6, second spring 23 is arranged on impeller 7, the one end of second spring 23 upward is socketed on upper coverOn 15 positioning column 24,23 one end directed downwardly of second spring squeezes impeller 7 and contradicts to positioning seat 10, and impeller 7 is made to be inThe state being compacted.The effect of the first spring 19 and second spring 23 is needed while overcome when sealing ring 9 drives impeller 7 to move upThe coefficient of elasticity of power, the first spring 19 and second spring 23 is different, and the first spring 19 and the cooperation of second spring 23 realize compacted propertyDeformation process.When gas pressure restores normal, the impeller 7 that can link of second spring 23 quickly moves down.
In conjunction with Fig. 3 and Fig. 6, positioning seat 10 is equipped with stairstepping liner plate 20, and stairstepping liner plate 20 is equipped with gasket 21, onWhen lid 15 coordinates with positioning seat 10, gasket 21 is used as intermediate undertake part, mating surface to form fold-line-shaped structure, increases sealing effectFruit.Pedestal 1 is equipped with stairstepping slot 26, and positioning seat 10 is equipped with undertaking body 27, undertaking body 27 be inserted into stairstepping slot 26 andCompress the outer rim of sealing ring 9；It is set on positioning seat 10 there are four connecting pole 28, pedestal 1 is equipped with the connection coordinated for connecting pole 28Slot 29,29 internal run-through of connecting pole 28 and link slot；Before assembling fixed screw 22, positioning seat 10 passes through connecting pole 28 with pedestal 1It is pre-positioned with link slot 29.
Embodiment two：A kind of electric pressure cooking saucepan, including embodiment one.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the artMember can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at thisIt is all protected by Patent Law in the right of invention.