CN203312155U - Non-self-reset pressure switch for household electrical appliances - Google Patents
Non-self-reset pressure switch for household electrical appliances Download PDFInfo
- Publication number
- CN203312155U CN203312155U CN2013204028505U CN201320402850U CN203312155U CN 203312155 U CN203312155 U CN 203312155U CN 2013204028505 U CN2013204028505 U CN 2013204028505U CN 201320402850 U CN201320402850 U CN 201320402850U CN 203312155 U CN203312155 U CN 203312155U
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- pressure switch
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- household electrical
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Abstract
The utility model provides a non-self-reset pressure switch for household electrical appliances. The non-self-reset pressure switch comprises a housing, a magnetic seat arranged in the housing and two wiring inserting sheets and is characterized in that a fixed metal contact sheet and an elastic metal contact sheet are arranged in the magnetic seat which is covered by a magnetic cover; a drive metal sheet is arranged on an outer side of the magnetic cover; contact points mutually contacted are respectively arranged on the fixed metal contact sheet and the elastic metal contact sheet; two wiring inserting sheets are respectively connected with the fixed metal contact sheet and the elastic metal contact sheet; a magnetic column is threaded through the magnetic cover; one end of the magnetic column is pressed against the elastic metal contact sheet, and the other end of the magnetic column is pressed against the drive metal sheet; a push block is arranged on the other side of the drive metal sheet; and one end of the push block is pressed against the drive metal sheet, and the other end is a free end which stretches out of the housing. The non-self-reset pressure switch is simple in structure and small in size and is connected with a circuit via the wiring inserting sheets, and a set current value is high; and safety of use is ensured when pressure exceeds a set pressure value.
Description
Technical field
The utility model relates to appliance switch, and particularly a kind of pressure switch of non-automatic-reset for household electrical appliance, belong to the technological improvement of existing pressure switch.
Background technology
More existing pressure electric appliances product needed are controlled the pressure of interiors of products, for example electric pressure cooker.What wherein pressure controlled electric pressure cooker generally adopted is elastic construction, by the elastomer compressive deformation, produce displacement and come the driving pressure switch to cut off the electricity supply, and steady operation pressure, but pressure switch is can be automatically reset; When pressure switch lost efficacy, by the pressure limiting device pressure release, protect, and the passage of pressure limiting device is narrow ductway that relief valve for example is easy to stop up and lost efficacy; When above two safeguard measures all lost efficacy; finally just rely on the sealing ring pressure relief device and do last safeguard protection, but the sealing ring pressure relief device also can only discharge most of pressure, and can again reset and boost; can not thoroughly discharge all pressure, the consumer is still existed to certain potential safety hazard.For this reason, people have designed the non-automatic-reset pressure switch, its basic principle is exactly, in case this non-automatic-reset pressure switch is disconnected, just can not automatically reset again, must carry out specialized maintenance and just can reuse, guarantee that the Voltage force series products can not re-use in out of order situation, thereby guarantee the use safety of this series products.
Yet most of non-automatic-reset pressure switches in the market are difficult to be applied among small household electrical appliance.Reason is, a class volume is too large, and the limited space of small household electrical appliance energy setting pressure switch, can't be used; One class small volume, although can be installed among small household electrical appliance, the current limit value of this class pressure switch is too little at present, does not have the effect of overvoltage protection.And current pressure switch common configuration is more complicated, cost is not low yet.
The utility model content
The purpose of this utility model is the shortcoming that overcomes current pressure switch, provide a kind of simple in structure, cost is low, volume is little, the pressure switch of the non-automatic-reset for household electrical appliance that the current limit value is high.
The technical scheme that realizes the utility model purpose is, non-automatic-reset pressure switch for household electrical appliance, include shell, be positioned at the magnetic support of shell, two male blades, it is characterized in that, in described magnetic support, be provided with fixing metal contact and elastic metallic contact, and covered by the magnetic lid, the magnetic lid outside is provided with the driving sheet metal, on described fixing metal contact and elastic metallic contact, be respectively equipped with the contact be in contact with one another, two male blades are connected with the elastic metallic contact with the fixing metal contact respectively, pass the magnetic lid magnetic post is set, described magnetic post one end is resisted against on the elastic metallic contact, the other end of magnetic post is resisted against and drives on sheet metal, opposite side at described driving sheet metal is provided with jacking block, one end of described jacking block is resisted against and drives on sheet metal, the other end is that free end stretches out shell.
For improving conductivity, above-mentioned fixing metal contact and elastic metallic contact are copper sheet.
Above-mentioned driving sheet metal is circle or polygon.
The cross section of above-mentioned driving sheet metal is arc or straight line.
Above-mentioned driving sheet metal periphery is provided with fluting or is provided with through hole.
Above-mentioned driving sheet metal is bimetal leaf.
Compared to existing technology, its beneficial effect is the utility model, and simple in structure, volume is little, and utilizes the male blade place in circuit, and the current limit value is high; When pressure surpasses the restriction force value, after by the plastic deformation that drives sheet metal, the utility model being disconnected, can not automatically reset, need carry out after specialty is repaired just reusing, guarantee to use safety.
The accompanying drawing explanation
Fig. 1 is the utility model external structure schematic diagram.
Fig. 2 is that the A-A of Fig. 1 analyses and observe view.
Fig. 3 is that the B-B of Fig. 1 analyses and observe view.
Fig. 4 is the structural representation that the utility model is in off-state.
Fig. 5 drives the structural representation of sheet metal embodiment 1 in the utility model.
Fig. 6 drives the structural representation of sheet metal embodiment 2 in the utility model.
Fig. 7 drives the structural representation of sheet metal embodiment 3 in the utility model.
Fig. 8 is the schematic cross-section of Fig. 5.
Fig. 9 is that the utility model is arranged on the electric pressure cooker polycrystalline substance schematic diagram on electric pressure cooker.
Figure 10 is that the utility model is arranged on the structural representation on electric pressure cooker.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
Embodiment 1:
As Fig. 1, Fig. 2, shown in Figure 3, the present embodiment is the non-automatic-reset pressure switch for household electrical appliance, include shell, be positioned at the magnetic support 1 of shell, two male blades 8, described shell is comprised of lower casing 9 and upper shell 10, in described magnetic support 1, be provided with fixing metal contact 7 and elastic metallic contact 6, for improving conductivity, described fixing metal contact 7 and elastic metallic contact 6 are copper sheet, and covered by magnetic lid 2, described magnetic lid 2 outsides are provided with and drive sheet metal 3, on described fixing metal contact 7 and elastic metallic contact 6, be respectively equipped with the contact be in contact with one another, two male blades 8 are connected with elastic metallic contact 6 with fixing metal contact 7 respectively, pass magnetic lid 2 magnetic post 5 is set, described magnetic post 5 one ends are resisted against on elastic metallic contact 6, the other end of magnetic post 5 is resisted against and drives on sheet metal 3, opposite side at described driving sheet metal 3 is provided with jacking block 4, one end of described jacking block 4 is resisted against and drives on sheet metal 3, the other end is that free end stretches out shell.In the present embodiment, described driving sheet metal 3 is circular, as shown in Figure 5; The cross section that drives sheet metal 3 is arc, as shown in Figure 8.
When the present embodiment is used, take and be example for electric pressure cooker, as shown in Figure 9, Figure 10, the utility model A is arranged under the outer pot 12 of electric pressure cooker by a pressure switch support 11, and it is connected among the main circuit of electric pressure cooker, in the bottom of electric pressure cooker, also be provided with one for normal pressure switch 13, the opening pressure value of the utility model A is higher than the opening pressure value of pressure switch 13.
During the electric pressure cooker normal operation, original pressure switch 13 is worked, and normally controls the operating pressure of electric pressure cooker, and the utility model A is failure to actuate, and remains closed.After the original pressure switch 13 of electric pressure cooker lost efficacy, pressure in electric pressure cooker continues to increase, the outer pot 12 of electric pressure cooker continues to bottom offset, push the jacking block 4 in the utility model downwards, as shown in Figure 4, by driving sheet metal 3 pushing magnetic posts 5, and then extruding elastic metallic contact 6, when pot inner pressure is elevated to opening pressure value of the present utility model, magnetic post 5 promotes elastic metallic contact 6, make contact on it and the contact separation on fixing metal contact 7, the utility model is disconnected, the work of electric pressure cooker stopped heating; Meanwhile, described driving sheet metal 3 produces plastic deformation, can not automatically reset.Electric pressure cooker is because cutting off the electricity supply, pot inner pressure descends gradually, the elastic support structure in the bottom of a pan also returns to original state gradually, but because driving sheet metal 3 of the present utility model produces plastic deformation, can not automatically reset, make heater circuit keep separation, dissengaged positions, after this pot inner pressure is down to zero-pressure gradually, and can not reuse, must carry out specialized maintenance.Safety while having guaranteed like this to use.
Embodiment 2:
As shown in Figure 6, the difference of the present embodiment and embodiment 1 is, described driving sheet metal 3 is circular, and its periphery is provided with fluting 31, and its cross section is straight line, and namely whole sheet metal is plane.To guarantee that plastic deformation can occur under pressure to drive sheet metal 3.
Embodiment 3:
As shown in Figure 7, the difference of the present embodiment and embodiment 1 is, described driving sheet metal 3 is circular, which is provided with through hole 32, and its cross section is arc, to guarantee that plastic deformation can occur under pressure to drive sheet metal 3.
Driving sheet metal in the utility model also can adopt other shapes, or adopts bimetal leaf, as long as can not automatically reset after its cut-off switch.
The utility model can be used for the pressure of various pressure class household electrical appliance and controls.
Claims (6)
1. for the non-automatic-reset pressure switch of household electrical appliance, include shell, be positioned at the magnetic support of shell, two male blades, it is characterized in that, in described magnetic support, be provided with fixing metal contact and elastic metallic contact, and covered by the magnetic lid, the magnetic lid outside is provided with the driving sheet metal, on described fixing metal contact and elastic metallic contact, be respectively equipped with the contact be in contact with one another, two male blades are connected with the elastic metallic contact with the fixing metal contact respectively, pass the magnetic lid magnetic post is set, described magnetic post one end is resisted against on the elastic metallic contact, the other end of magnetic post is resisted against and drives on sheet metal, opposite side at described driving sheet metal is provided with jacking block, one end of described jacking block is resisted against and drives on sheet metal, the other end is that free end stretches out shell.
2. the pressure switch of the non-automatic-reset for household electrical appliance according to claim 1, is characterized in that, described fixing metal contact and elastic metallic contact are copper sheet.
3. the pressure switch of the non-automatic-reset for household electrical appliance according to claim 1 and 2, is characterized in that, described driving sheet metal is circle or polygon.
4. the pressure switch of the non-automatic-reset for household electrical appliance according to claim 3, is characterized in that, the cross section of described driving sheet metal is arc or straight line.
5. the pressure switch of the non-automatic-reset for household electrical appliance according to claim 4, is characterized in that, described driving sheet metal periphery is provided with fluting or is provided with through hole.
6. the pressure switch of the non-automatic-reset for household electrical appliance according to claim 1 and 2, is characterized in that, above-mentioned driving sheet metal is bimetal leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204028505U CN203312155U (en) | 2013-07-08 | 2013-07-08 | Non-self-reset pressure switch for household electrical appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204028505U CN203312155U (en) | 2013-07-08 | 2013-07-08 | Non-self-reset pressure switch for household electrical appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312155U true CN203312155U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204028505U Expired - Fee Related CN203312155U (en) | 2013-07-08 | 2013-07-08 | Non-self-reset pressure switch for household electrical appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312155U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248291A (en) * | 2015-06-09 | 2016-12-21 | Smc株式会社 | Pressure switch |
| CN111956058A (en) * | 2020-08-27 | 2020-11-20 | 乐清市通达有线电厂 | Pressure cooker cover protection switch |
-
2013
- 2013-07-08 CN CN2013204028505U patent/CN203312155U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248291A (en) * | 2015-06-09 | 2016-12-21 | Smc株式会社 | Pressure switch |
| CN106248291B (en) * | 2015-06-09 | 2020-03-24 | Smc株式会社 | Pressure switch |
| CN111956058A (en) * | 2020-08-27 | 2020-11-20 | 乐清市通达有线电厂 | Pressure cooker cover protection switch |
| CN111956058B (en) * | 2020-08-27 | 2021-06-01 | 乐清市通达有线电厂 | Pressure cooker cover protection switch |
| WO2022041324A1 (en) * | 2020-08-27 | 2022-03-03 | 乐清市通达有线电厂 | Protective switch of pressure cooker lid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20200708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |