CN111956058B - Pressure cooker cover protection switch - Google Patents
Pressure cooker cover protection switch Download PDFInfo
- Publication number
- CN111956058B CN111956058B CN202010878045.4A CN202010878045A CN111956058B CN 111956058 B CN111956058 B CN 111956058B CN 202010878045 A CN202010878045 A CN 202010878045A CN 111956058 B CN111956058 B CN 111956058B
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- Prior art keywords
- copper
- contact
- contact piece
- piece
- group
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 164
- 229910052802 copper Inorganic materials 0.000 claims abstract description 164
- 239000010949 copper Substances 0.000 claims abstract description 164
- 238000003780 insertion Methods 0.000 claims abstract description 44
- 230000037431 insertion Effects 0.000 claims abstract description 44
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 34
- 238000005452 bending Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/086—Pressure-cookers; Lids or locking devices specially adapted therefor with built-in heating means
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Push-Button Switches (AREA)
- Cookers (AREA)
- Tumbler Switches (AREA)
Abstract
The application discloses a pressure cooker cover protection switch, which relates to the field of switches and comprises a shell, wherein a push rod is connected to the shell in a sliding manner, one end, exceeding the shell, of the push rod is fixedly connected with a water-introducing part, a reset spring for driving the push rod to reset is arranged in the shell, a movable contact part is arranged on the push rod, a static contact part is arranged in the shell, the static contact part is electrically connected with a wiring terminal, and the movable contact part comprises an insertion plate, a copper body and a copper contact piece group, wherein the insertion plate is fixedly connected with the push rod, the copper body is arranged on the insertion plate, and the copper contact; the static contact piece comprises a stabilizing plate arranged in the shell and a copper abutting piece fixedly arranged on the stabilizing plate; copper butt piece and link electricity are connected, and copper butt piece all is provided with two and one-to-one with copper contact piece group, and copper contact piece group can take place deformation and contact with the copper butt piece in order to realize switching on or breaking off between two copper butt pieces. The application has the effect of reducing cost.
Description
Technical Field
The application relates to the field of switches, in particular to a pressure cooker cover protection switch.
Background
At present, the electric pressure cooker in the market is provided with a cooker cover protection switch at the connecting part between a cooker cover and a cooker body, so that the problem that the cooker is exploded in the operation process of the electric pressure cooker when the electric pressure cooker is started under the condition that the cooker cover is not tightly covered is solved.
In the related art, a chinese patent document with an authorized bulletin number of CN203815235U discloses a pot cover protection switch of an electric pressure cooker, which comprises a switch body, a static contact is arranged in the switch body, a push rod is connected to the switch body in a sliding manner, one end of the push rod is fixedly connected with a movable contact, and the movable contact is moved by the movement of the push rod, so as to realize whether the movable contact is in contact with the static contact, and finally control whether the protection switch is turned on.
However, the moving contact and the static contact are both welded with silver points which are made of silver alloy materials, so that the cost is higher, and the interior of the electric pressure cooker is controlled by adopting weak current without adopting the silver points for contact, and the improvement is needed.
Disclosure of Invention
In order to reduce the cost, the application provides a pressure cooker cover protection switch, adopts the mode that copper material spare contacted each other to replace silver point contact, has the effect of reduce cost.
The application provides a pressure cooker pot lid protection switch adopts following technical scheme:
the pressure cooker cover protection switch comprises a shell, wherein a push rod is connected onto the shell in a sliding manner, one end, exceeding the shell, of the push rod is fixedly connected with a water-introducing part, a reset spring for driving the push rod to reset is arranged in the shell, a movable contact part is arranged on the push rod, a fixed contact part is arranged in the shell and electrically connected with a wiring terminal, and the movable contact part comprises an insertion plate, a copper body and a copper contact piece group, wherein the insertion plate is fixedly connected with the push rod, the copper body is arranged on the insertion plate, and the copper contact piece group is fixedly connected with the copper body; the static contact piece comprises a stabilizing plate arranged in the shell and a copper abutting piece fixedly arranged on the stabilizing plate; the copper butt joint piece is connected with the link electricity, copper butt joint piece all is provided with two and one-to-one with copper contact piece group, copper contact piece group can take place deformation and contact with the copper butt joint piece in order to realize switching on or breaking off between two copper butt joint pieces.
Through adopting above-mentioned technical scheme, when the catch bar did not receive external force, the catch bar removed to the top under reset spring's effort, and copper contact piece group and the copper butt piece contact that corresponds separately this moment, and two copper butt pieces switch on. When the catch bar receives downward exogenic force, the catch bar overcomes reset spring's elasticity and moves down to make copper contact chip group and the copper butt piece separation that corresponds respectively, two copper butt pieces do not switch on. The copper part is adopted to replace the silver point, so that the cost is saved under the condition that the weak current control of the electric pressure cooker can be met. In addition, it should be mentioned that, in common electric pressure cookers, a cover protection switch is arranged at a connection position between the cover and the body, and the cover protection switches are normally closed button switches, so as to prevent the electric pressure cooker from being started and causing the problem of pot explosion in the operation process of the electric pressure cooker under the condition that the cover is not tightly covered. Still be provided with the pot edge on the pot body, the pot cover lid is on the pot edge, can control button switch in order to guarantee the pot cover, button switch's catch bar can pass the pot edge to inconsistent with the pot cover, will appear the gap on the position that button switch passed the pot edge like this, electric pressure cooker is boiling the in-process of east west, will gather a large amount of water on the pot edge, and water can flow to button switch along the gap on, makes button switch short circuit. And through setting up the water diversion portion after, in the in-process of using electric pressure cooker, the pot will gather a large amount of water on the edge, and at this moment the water diversion portion is worn out the pot edge, water on the pot edge will attach on the water diversion portion, according to the adhesion characteristic of water, at the in-process that flows downwards, water will be firmly attached on the water diversion portion, flow out along the water diversion portion from the pot edge, just so can guarantee can not appear water inflow in the button switch when with the water outgoing on the pot edge, make the button switch short circuit, because the water diversion portion is all drawn forth the water on the pot edge, so can effectually prevent to appear the problem that the water on the pot edge flows back in the pot after uncapping.
Preferably, the push rod is fixedly provided with a lower fixed block, and the lower fixed block is provided with an insertion groove for inserting the insertion plate and an opening for passing the copper contact sheet group.
Through adopting above-mentioned technical scheme, insert the board and can insert from the insertion groove from one side of lower fixed block, the copper contact piece group is worn out from the opening, has the effect of easy to assemble insert the board.
Preferably, insert and be provided with the barb on the board, it has the joint groove to open on the fixed block down, inserts the barb that the board and is located the joint inslot and realize inserting the board and fixed with lower fixed block joint.
Through adopting above-mentioned technical scheme, have the effect that conveniently inserts the board and lower fixed block is connected.
Preferably, a step strip is integrally formed on the lower fixing block, the step strip is located in the insertion groove, and an inclined surface is arranged at one end of the step strip facing the insertion opening of the insertion groove.
By adopting the technical scheme, in the process of inserting the insertion plate into the insertion groove, the insertion plate is firstly abutted against the inclined surface, the position is adjusted under the action of the inclined surface and finally the insertion plate is inserted into the insertion groove, the function of guiding the insertion plate to be inserted into the insertion groove is achieved, and the insertion of the insertion plate is facilitated.
Preferably, copper contact piece group is including thin contact piece and thick contact piece, and the one end of thin contact piece and thick contact piece all is connected with copper body an organic whole, and the other end of thin contact piece and thick contact piece all shaping has arc contact portion, and arc contact portion can contact with the copper butt piece.
Through adopting above-mentioned technical scheme, the arcwall face and the contact of copper butt piece of arc contact site do not have the setting of cambered surface in comparison, and arc contact site has the effect of protection copper butt piece, has reduced the degree of scratch.
Preferably, a gap is provided between the thin contact piece and the thick contact piece.
Through adopting above-mentioned technical scheme, thin contact piece and thick contact piece are relatively independent, and after a contact piece is because of the permanent deformation of external force, another still can play the effect with the contact of copper butt piece, has improved product reliability.
Preferably, the lower end of the push rod is provided with a center column, the center column is inserted into one end of the reset spring, the other end of the reset spring is abutted against the inner wall of the shell, and the lower end of the push rod is further fixed with a blocking plate located outside the outer side wall of the reset spring.
Through adopting above-mentioned technical scheme, reset spring receives the spacing and difficult casing that breaks away from of barrier plate and center post, the reset spring's of being convenient for stability.
Preferably, the thin contact piece and the thick contact piece both comprise a middle section part, one end of the middle section part is connected with the copper body to form an upper bending part, and the other end of the middle section part is connected with the arc-shaped contact part to form a lower bending part; the shell is provided with a protection mechanism for preventing the copper contact sheet group from generating permanent deformation; the protection mechanism comprises a first limiting plate fixed on the shell, and when the copper contact sheet group moves upwards, the copper contact sheet group deforms downwards and is in contact with the copper abutting sheet; when copper contact piece group moves down, copper contact piece group and copper butt piece separation, kink deformation in interlude part and the first limiting plate butt and the realization, copper contact piece group upwards takes place deformation.
Through adopting above-mentioned technical scheme, when copper contact piece group rebound, copper contact piece group takes place deformation and copper contact piece group and keeps away from the one end of the copper body and rotates downwards, contradicts with the copper butt piece until arc contact site. When arc contact portion contradicts time overlength or conflict number of times when too much with copper butt piece, lead to copper contact piece group to take place permanent deformation easily to lead to arc contact portion and copper butt piece to contradict unstablely, influence the stability of electricity connection. And in this application, when copper contact piece group downwardly moving, the interlude part can with first limiting plate butt to make the lower extreme of going up the kink upwards rotate, thereby when guaranteeing next copper contact piece group upwardly moving, copper contact piece group has sufficient deformation power, guarantees arc contact site and copper butt piece's conflict stability.
Preferably, protection mechanism is still including fixed connection in the horizontal pole on the lower fixed block, the horizontal pole is located between interlude part and the copper butt piece, and when copper contact piece group upwards took place deformation, interlude part can with the horizontal pole butt in order to restrict the excessive deformation of kink.
By adopting the technical scheme, the excessive deformation of the upper bending part is avoided, and the service life of the product is prolonged.
Preferably, the protection mechanism further comprises a gear rotatably connected to the first limiting plate, a rack fixedly connected with the lower fixing block, an ejector rod meshed with the gear and a torsion spring; one end of the torsion spring is fixed with the gear, and the other end of the torsion spring is fixed with the first limiting plate; when the copper contact piece group moves downwards, the rack can be meshed with the gear and drives the ejector rod to eject, and the ejector rod ejects and abuts against the arc-shaped contact part.
By adopting the technical scheme, explanation is first made, when the copper contact piece group moves upwards, the copper contact piece group deforms, and one end, far away from the copper body, of the copper contact piece group rotates downwards, and at the moment, the upper bending part and/or the lower bending part may permanently deform. If only go up the kink and take place permanent deformation, then when copper contact patch group moves down, the interlude part and first limiting plate butt and make and go up the kink and resume certain deformation volume. If permanent deformation takes place for lower bending, then when copper contact piece group downwardly moving, the ejecting rod is ejecting and butt arc contact site, goes up kink deformation one end distance back, and the kink continues deformation with the horizontal pole butt and prevents, and lower bending at this moment can take place deformation and resume certain deformation volume to guarantee arc contact site and copper butt piece's conflict stability.
In summary, the present application has the following beneficial effects:
1. the copper piece is adopted to replace silver point contact, so that the effect of reducing the product cost is achieved;
2. protection machanism's setting still has the effect of guaranteeing arc contact site and copper butt piece's conflict stability.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a partial schematic view of the copper contact set of the present embodiment moving up to the highest position;
FIG. 3 is an exploded view of a portion of an embodiment of the present application;
FIG. 4 is an exploded view of the embodiment of the present application highlighting the partial structure of the movable and stationary contacts;
FIG. 5 is a schematic diagram illustrating the structure of a copper contact set and a copper body according to an embodiment of the present application;
FIG. 6 is a partial schematic view of the copper contact set of the present embodiment moving down to the lowest end;
FIG. 7 is an enlarged schematic view at A in FIG. 6;
FIG. 8 is a schematic sectional view of a portion of an embodiment of the present application;
FIG. 9 is a partial schematic view of the embodiment of the present application highlighting the torsion spring.
Reference numerals: 1. a housing; 2. a push rod; 3. a return spring; 4. a lower fixed block; 5. a movable contact member; 6. a stationary contact; 7. an insert plate; 8. a copper body; 9. a copper contact pad set; 10. inserting the groove; 11. an opening; 12. step bars; 13. an inclined surface; 14. a thin contact piece; 15. a thick contact piece; 16. an arc-shaped contact portion; 17. a stabilizing plate; 18. a copper contact piece; 19. perforating; 20. a positioning column; 21. a placement groove; 22. a central column; 23. a blocking plate; 24. a terminal; 25. a barb; 26. a clamping groove; 27. an intermediate section member; 28. an upper bending part; 29. a lower bent portion; 30. a first limit plate; 31. a cross bar; 32. a gear; 33. a rack; 34. a torsion spring; 35. ejecting the rod; 36. a water-introducing part.
Detailed Description
The embodiment of the application discloses a pressure cooker cover protection switch, referring to fig. 1 and 2, which comprises a shell 1, wherein a push rod 2 is connected to the shell 1 in a sliding manner along the vertical direction. A return spring 3 for driving the push rod 2 to move (return) upwards is arranged in the shell 1. A lower fixed block 4 is integrally formed at the lower end of the push rod 2, a movable contact piece 5 is connected to the lower fixed block 4, a static contact piece 6 is fixedly arranged in the shell 1, and the static contact piece 6 is electrically connected with a wiring terminal 24.
Referring to fig. 3, the movable contact 5 includes an insertion plate 7 provided on the lower fixed block 4, a copper body 8 provided on the insertion plate 7, and a copper contact piece group 9 fixedly connected to the copper body 8. Wherein, it has the confession to insert the inserted slot 10 of board 7 and supplies the opening 11 that copper contact piece group 9 passed to open on the lower fixed block 4, insert board 7 and can insert from the inserted slot 10 from one side of lower fixed block 4, and insert integrated into one piece and have barb 25 on the board 7, it has joint groove 26 to open on the lower fixed block 4, insert and realize the joint through the cooperation of barb 25 and joint groove 26 between board 7 and the lower fixed block 4 and fix, insert board 7 and barb 25 and be the insulating material of deformability. The copper contact plate group 9 passes through the opening 11, and has the effect of facilitating the installation of the insertion plate 7. A step strip 12 is integrally formed on the lower fixing block 4, the step strip 12 is positioned in the insertion slot 10, and an inclined surface 13 is arranged at one end of the step strip 12 facing the insertion slot of the insertion slot 10. In the process of inserting the insertion plate 7 into the insertion slot 10, the insertion plate 7 first abuts against the inclined surface 13, is adjusted in position by the inclined surface 13, and is finally inserted into the insertion slot 10, thereby playing a role of guiding the insertion plate 7 to be inserted into the insertion slot 10 and facilitating the insertion of the insertion plate 7.
Referring to fig. 3 and 4, two copper contact sheet groups 9 are provided, each copper contact sheet group 9 comprises a thin contact sheet 14 and a thick contact sheet 15, one end of each thin contact sheet 14 and one end of each thick contact sheet 15 are integrally connected with the copper body 8, and arc-shaped contact parts 16 are formed at the other ends of the thin contact sheets 14 and the thick contact sheets 15.
Referring to fig. 4, the stationary contact 6 includes a stabilizer plate 17 provided in the housing 1, and a copper contact piece 18 fixedly provided on the stabilizer plate 17. The copper abutting sheets 18 are electrically connected with the connecting ends, and the copper abutting sheets 18 are arranged in one-to-one correspondence with the copper contact sheet groups 9. When the two copper contact piece groups 9 are respectively contacted with the corresponding copper abutting pieces 18, the two copper abutting pieces 18 are conducted; when the two copper contact piece groups 9 are not in contact with the corresponding copper contact piece 18, the two copper contact piece groups 18 are disconnected from each other. It should be mentioned that the arc-shaped surface of the arc-shaped contact portion 16 is in contact with the copper abutting sheet 18, and compared with the arrangement without the arc-shaped surface, the arc-shaped contact portion 16 has the effect of protecting the copper abutting sheet 18, and the degree of scratching is reduced. A gap is formed between the thin contact piece 14 and the thick contact piece 15, the thin contact piece 14 and the thick contact piece 15 are relatively independent, and when one contact piece is permanently deformed due to external force, the other contact piece can still contact with the copper abutting piece 18, so that the reliability of the product is improved.
Referring to fig. 3, the copper body 8 is provided with two through holes 19, and the insertion plate 7 is fixedly provided with positioning posts 20 penetrating through the through holes 19, so that the copper body 8 and the insertion plate 7 can be conveniently positioned with each other, and can also be conveniently fixed with each other by gluing.
Referring to fig. 2, a placement groove 21 is provided inside the housing 1, and side ends of the stabilizer plate 17 are inserted into the placement groove 21 to facilitate stabilization of the stabilizer plate 17 with respect to the housing 1.
Referring to fig. 2 and 3, a return spring 3 is provided between the lower end of the push rod 2 and the bottom end of the inner wall of the housing 1. The lower extreme an organic whole of catch bar 2 is connected with center post 22, and center post 22 inserts to reset spring 3's one end in, reset spring 3's the other end and the bottom butt of casing 1 inner wall, catch bar 2 lower extreme still is fixed with two and is located barrier plate 23 outside reset spring 3 lateral wall. The return spring 3 is limited by the blocking plate 23 and the central column 22 and is not easy to separate from the shell 1, so that the return spring 3 is convenient to stabilize.
Referring to fig. 5, the thin contact piece 14 and the thick contact piece 15 each comprise an intermediate section member 27, one end of the intermediate section member 27 being connected to the copper body 8 and forming an upper bend 28, and the other end of the intermediate section member 27 being connected to the arcuate contact portion 16 and forming a lower bend 29.
Referring to fig. 6 and 7, the housing 1 is provided with a protection mechanism for preventing the copper contact piece group 9 from being permanently deformed. The protection mechanism comprises a first limit plate 30 fixed on the shell 1.
Referring to fig. 2 and 3, when the copper contact sheet group 9 moves upward, one end of the copper contact sheet group 9 away from the copper body 8 (i.e. the lower end of the copper contact sheet group 9) deforms downward and comes into interference with the copper contact sheet 18. When the contact time of the arc-shaped contact portion 16 and the copper abutting piece 18 is too long or the contact frequency is too many, the copper contact piece group 9 is easily deformed permanently, so that the contact between the arc-shaped contact portion 16 and the copper abutting piece 18 is unstable, and the stability of electrical connection is affected.
Referring to fig. 6, 7, through setting up first limiting plate 30 in this application, when copper contact patch group 9 moves down, copper contact patch group 9 and the separation of copper butt piece 18, interlude part 27 and the first limiting plate 30 upper end butt and realize going up kink 28 deformation, copper contact patch group 9 keeps away from the one end of copper body 8 and upwards takes place deformation (the position of copper contact patch group 9 and copper body 8 is seen in fig. 3), the lower extreme of going up kink 28 upwards rotates, thereby when guaranteeing next time copper contact patch group 9 and upwards moving, copper contact patch group 9 has sufficient deformation power, guarantee arc contact 16 and the conflict stability of copper butt piece 18.
Referring to fig. 7 and 8, the protection mechanism further includes a cross bar 31 fixedly connected to the lower fixing block 4, a gear 32 rotatably connected to the first limiting plate 30, a rack 33 fixedly connected to the lower fixing block 4, and an ejector rod 35 engaged with the gear 32 and slidably connected to the first limiting plate 30. The horizontal pole 31 is located between interlude part 27 and the copper butt piece 18, and when copper contact piece group 9 upwards takes place deformation, interlude part 27 can with horizontal pole 31 butt in order to restrict the excessive deformation of kink 28, improves product life.
Referring to fig. 9, the protection mechanism further includes a torsion spring 34, one end of the torsion spring 34 is fixed to the gear 32, the other end of the torsion spring 34 is fixed to the first limit plate 30, when the gear 32 is not engaged with the rack 33, the gear 32 is maintained in a stable state under the action of the torsion spring 34, and the ejection rod 35 is used for abutting against the arc-shaped contact portion 16 and retracting into the first limit plate 30 (refer to fig. 2).
Referring to fig. 7, when the copper contact piece group 9 moves downward, the rack 33 can engage with the gear 32 and drive the ejector rod 35 to eject, and the ejector rod 35 ejects and abuts against the arc-shaped contact portion 16. As explained above, when the copper contact piece set 9 moves upward, the copper contact piece set 9 deforms and the end of the copper contact piece set 9 away from the copper body 8 rotates downward, which may be a permanent deformation of the upper bent portion 28 and/or the lower bent portion 29. If only the upper bent portion 28 is permanently deformed, when the copper contact piece group 9 moves downward, the intermediate section member 27 abuts against the first stopper plate 30 and causes the upper bent portion 28 to return to a certain amount of deformation. If permanent deformation takes place for lower bending 29, then when copper contact patch group 9 moves down, ejection rod 35 is ejecting and butt arc contact 16, goes up the back of bending 28 deformation one end distance, and interlude part 27 and horizontal pole 31 butt and the continuation deformation of bending 28 on the prevention, and lower bending 29 at this moment can take place to deform and resume certain deformation volume to guarantee arc contact 16 and the conflict stability of copper butt 18.
Referring to fig. 1, one end of the push rod 2 beyond the casing 1 is fixedly connected with a water diversion part 36, the push rod 2 is U-shaped, and the water diversion part 36 is linear. It should be explained that, in the common electric pressure cooker, a cover protection switch is arranged at the connection part between the cover and the cooker body, and the cover protection switches are normally closed button switches, so that the problem that the electric pressure cooker is started and explodes during the operation of the electric pressure cooker under the condition that the cover is not tightly covered is solved. The pot body is also provided with a pot edge, and the pot cover covers the pot edge, so that a good sealing effect is achieved. In order to ensure that the pot cover can operate the button switch, the push rod 2 of the button switch can penetrate through the pot edge and abut against the pot cover, so that a gap can be formed at the position where the button switch penetrates through the pot edge, a large amount of water can be gathered on the pot edge in the process of cooking the electric pressure cooker, and the water can flow onto the button switch along the gap, so that the button switch is in short circuit. After the water leading part 36 is arranged, a large amount of water can be gathered on the pot edge in the process of using the electric pressure cooker, the water leading part 36 penetrates out of the pot edge, the water on the pot edge can be attached to the water leading part 36, according to the adhesion characteristic of the water, in the downward flowing process, the water can be firmly attached to the water leading part 36 and flows out of the pot edge along the water leading part 36, so that the water on the pot edge can be discharged, meanwhile, the water can not flow into the button switch, the button switch is short-circuited, and the water on the pot edge is completely led out by the water leading part 36, so that the problem that the water on the pot edge flows back into the pot after the cover is opened can be effectively prevented.
The concrete effects are as follows:
when the push rod 2 is not subjected to external force, the push rod 2 moves to the uppermost end under the action of the return spring 3, the copper contact sheet groups 9 at the moment are in contact with the corresponding copper abutting sheets 18, and the two copper abutting sheets 18 are conducted. When the push rod 2 is subjected to downward external force, the push rod 2 overcomes the elastic force of the return spring 3 to move downwards, so that the copper contact piece groups 9 are separated from the corresponding copper abutting pieces 18, and the two copper abutting pieces 18 are not conducted. Because the electric pressure cooker is controlled by weak current, the copper piece is adopted to replace silver point contact, the on-off requirement of the weak current control can be met, and the effect of saving cost is achieved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides a pressure cooker pot cover protection switch, including casing (1), sliding connection has catch bar (2) on casing (1), one end fixedly connected with drainage portion (36) that catch bar (2) surpassed casing (1), be provided with reset spring (3) that order about catch bar (2) to reset in casing (1), be equipped with movable contact spare (5) on catch bar (2), be provided with quiet touching spare (6) in casing (1), quiet touching spare (6) electricity is connected with wiring end (24), its characterized in that: the movable contact piece (5) comprises an insertion plate (7) which is relatively and fixedly connected with the push rod (2), a copper body (8) arranged on the insertion plate (7) and a copper contact piece group (9) which is fixedly connected with the copper body (8); the static contact piece (6) comprises a stabilizing plate (17) arranged in the shell (1) and a copper abutting piece (18) fixedly arranged on the stabilizing plate (17); the copper abutting sheets (18) are electrically connected with the connecting end, the copper abutting sheets (18) and the copper contact sheet group (9) are arranged in a one-to-one correspondence mode, and the copper contact sheet group (9) can be deformed and is in contact with the copper abutting sheets (18) to achieve connection or disconnection between the two copper abutting sheets (18); a lower fixing block (4) is fixedly arranged on the push rod (2), and an insertion groove (10) for inserting the insertion plate (7) and an opening (11) for a copper contact sheet group (9) to pass through are formed in the lower fixing block (4); the copper contact piece group (9) comprises a thin contact piece (14) and a thick contact piece (15), one ends of the thin contact piece (14) and the thick contact piece (15) are integrally connected with the copper body (8), arc-shaped contact parts (16) are formed at the other ends of the thin contact piece (14) and the thick contact piece (15), and the arc-shaped contact parts (16) can be in contact with the copper contact piece (18); the thin contact piece (14) and the thick contact piece (15) both comprise a middle section part (27), one end of the middle section part (27) is connected with the copper body (8) to form an upper bent part (28), and the other end of the middle section part (27) is connected with the arc-shaped contact part (16) to form a lower bent part (29); the shell (1) is provided with a protection mechanism for preventing the copper contact sheet group (9) from generating permanent deformation; the protection mechanism comprises a first limiting plate (30) fixed on the shell (1), and when the copper contact sheet group (9) moves upwards, the copper contact sheet group (9) deforms downwards and is in contact with the copper abutting sheet (18); when copper contact patch group (9) moved down, copper contact patch group (9) and copper butt piece (18) separation, kink (28) deformation in the realization is supported and realized with first limiting plate (30) to interlude part (27), and copper contact patch group (9) upwards takes place the deformation.
2. The pressure cooker lid protection switch of claim 1, wherein: insert and be provided with barb (25) on board (7), it has joint groove (26) to open on lower fixed block (4), inserts barb (25) of board (7) and is located joint groove (26) and realizes inserting board (7) and fixed with lower fixed block (4) joint.
3. The pressure cooker lid protection switch of claim 1, wherein: step strips (12) are integrally formed on the lower fixing block (4), the step strips (12) are positioned in the insertion groove (10), and an inclined surface (13) is arranged at one end, facing the insertion hole of the insertion groove (10), of the step strips (12).
4. The pressure cooker lid protection switch of claim 1, wherein: a gap is arranged between the thin contact piece (14) and the thick contact piece (15).
5. The pressure cooker lid protection switch of claim 1, wherein: the lower end of the push rod (2) is provided with a center column (22), the center column (22) is inserted into one end of the reset spring (3), the other end of the reset spring (3) is abutted to the inner wall of the shell (1), and the lower end of the push rod (2) is further fixed with a blocking plate (23) located outside the outer side wall of the reset spring (3).
6. The pressure cooker lid protection switch of claim 1, wherein: protection mechanism is still including horizontal pole (31) of fixed connection on lower fixed block (4), horizontal pole (31) are located between interlude part (27) and copper butt piece (18), and when copper contact piece group (9) upwards took place deformation, interlude part (27) can with horizontal pole (31) butt in order to restrict the excessive deformation of kink (28).
7. The pressure cooker lid protection switch of claim 6, wherein: the protection mechanism further comprises a gear (32) rotatably connected to the first limiting plate (30), a rack (33) fixedly connected with the lower fixing block (4), an ejector rod (35) meshed with the gear (32) and a torsion spring (34); one end of the torsion spring (34) is fixed with the gear (32), and the other end of the torsion spring (34) is fixed with the first limit plate (30); when the copper contact sheet group (9) moves downwards, the rack (33) can be meshed with the gear (32) and drives the ejector rod (35) to eject, and the ejector rod (35) ejects and abuts against the arc-shaped contact part (16).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010878045.4A CN111956058B (en) | 2020-08-27 | 2020-08-27 | Pressure cooker cover protection switch |
| PCT/CN2020/114626 WO2022041324A1 (en) | 2020-08-27 | 2020-09-11 | Protective switch of pressure cooker lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010878045.4A CN111956058B (en) | 2020-08-27 | 2020-08-27 | Pressure cooker cover protection switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111956058A CN111956058A (en) | 2020-11-20 |
| CN111956058B true CN111956058B (en) | 2021-06-01 |
Family
ID=73399456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010878045.4A Active CN111956058B (en) | 2020-08-27 | 2020-08-27 | Pressure cooker cover protection switch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111956058B (en) |
| WO (1) | WO2022041324A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022041324A1 (en) | 2022-03-03 |
| CN111956058A (en) | 2020-11-20 |
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