CN203377164U - Non self-reset pressure switch of household appliance - Google Patents
Non self-reset pressure switch of household appliance Download PDFInfo
- Publication number
- CN203377164U CN203377164U CN201320514856.1U CN201320514856U CN203377164U CN 203377164 U CN203377164 U CN 203377164U CN 201320514856 U CN201320514856 U CN 201320514856U CN 203377164 U CN203377164 U CN 203377164U
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- Prior art keywords
- pressure switch
- metal contact
- magnetic
- reset pressure
- automatic
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Abstract
The utility model relates to a non self-reset pressure switch of household appliance. The non self-reset pressure switch comprises a shell; a magnetic seat and a wiring insert slice which are arranged in the shell; a fixed metal contact piece and an elastic metal contact piece which are arranged in the magnetic seat and covered by a magnetic cover; a driving slice arranged on the outer side of the magnetic cover; contacts which are respectively arranged on the fixed metal contact piece and the elastic metal contact piece and mutually contacted, wherein the fixed metal contact piece and the elastic metal contact piece are respectively connected with the wiring insert slice, a magnetic pole passes through the magnetic cover, one end of the magnetic pole is bunted against elastic metal contact piece, the other end is close to one side of the driving slice, a top block is arranged on the other side of the driving slice, one end of the top block is bunted against the driving slice, the other end of the top block is a free end extending outside the shell, and a compression spring is sleeved on the top block. The non self-reset pressure switch has features of simple structure, small size and high limited current value. After the switch is off, the top block is extruded on the magnetic pole by the compression spring, the contacts of the fixed metal contact piece and the elastic metal contact piece are separated, the switch does not automatically reset, and the switch is safely used.
Description
Technical field
The utility model relates to appliance switch, and particularly a kind of non-automatic-reset pressure switch of household electrical appliance, belong to the technological improvement of existing pressure switch.
Background technology
More existing pressure class household electronic products need to be controlled the pressure of interiors of products, for example electric pressure cooker.What wherein pressure controlled electric pressure cooker generally adopted is elastic construction, produce displacement by the elastomer compressive deformation and come the driving pressure switch to cut off the electricity supply, and steady operation pressure, but at present most pressure switch is can be automatically reset; When pressure switch lost efficacy, protected by the pressure limiting device pressure release, and the passage of pressure limiting device is narrow ductway that the relief valve of electric pressure cooker 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, once 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 these current pressure switch common configuration are 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 non-automatic-reset pressure switch of the household electrical appliance that the current limit value is high.
The technical scheme that realizes the utility model purpose is, the non-automatic-reset pressure switch of household electrical appliance, include shell, be positioned at the magnetic support of shell, two male blades, be provided with fixing metal contact and elastic metallic contact in described magnetic support, and covered by the magnetic lid, the magnetic lid outside is provided with driving chip, be respectively equipped with the contact be in contact with one another on described fixing metal contact and elastic metallic contact, two male blades are connected with the elastic metallic contact with the fixing metal contact respectively, through the magnetic lid, the magnetic post is set, described magnetic post one end is resisted against on the elastic metallic contact, the other end of magnetic post is near driving chip one side, opposite side at described driving chip is provided with jacking block, one end of described jacking block is resisted against on driving chip, the other end is that free end stretches out shell, it is characterized in that, be equipped with Compress Spring on described jacking block.
For improving conductivity, above-mentioned fixing metal contact and elastic metallic contact are copper sheet.
Above-mentioned driving chip is circle or polygon.
The cross section of above-mentioned driving chip is arc or straight line.
Above-mentioned driving chip is sheet metal or bimetal leaf.
For in the production installation process, described jacking block can contact with pressure vessel enclosure better, guarantees that the deformation energy of pressure vessel promptly and accurately is passed on jacking block, realizes that pressure controls, and at the free end of described jacking block, is provided with adjusting nut.Rotate described adjusting nut, after can making the utility model install, guarantee adjusting nut and pressure vessel enclosure good contact.
Or, be fixedly installed regulating arm at described jacking block free end, on described regulating arm, adjustment screw is set, rotate described adjustment screw, after the utility model is installed, guarantee adjustment screw and pressure vessel enclosure good contact.
Or the utility model is as a whole, on described shell, external screw thread is set, correspondingly, a holder with internal thread hole is set, shell is screwed in the internal thread hole of described holder.After during use, holder being installed, whole turn shell, can regulate position of the present utility model, guarantee jacking block wherein can with the pressure vessel enclosure good contact.
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, by the Compress Spring on jacking block, jacking block is squeezed on the magnetic post by driving chip, guarantee the contact separation on fixing metal contact and elastic metallic contact, and 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.
The A-A that Fig. 2 is Fig. 1 analyses and observe view.
The B-B that Fig. 3 is Fig. 1 analyses and observe view.
Fig. 4 is the structural representation of the utility model 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.
The schematic cross-section that Fig. 7 is Fig. 5.
Fig. 8 is the structural representation that the utility model arranges adjusting nut on jacking block.
Fig. 9 is that the utility model arranges regulating arm on jacking block, and the structural representation of adjustment screw is set on regulating arm.
To be that the utility model is as a whole be arranged on the structural representation on holder by threaded engagement to Figure 10.
Figure 11 is that the utility model is arranged on the electric pressure cooker polycrystalline substance schematic diagram on electric pressure cooker.
Figure 12 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 Fig. 3, the present embodiment is the non-automatic-reset pressure switch of 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, be provided with fixing metal contact 7 and elastic metallic contact 6 in described magnetic support 1, for improving conductivity, described fixing metal contact 7 and elastic metallic contact 6 are copper sheet, and covered by magnetic lid 2, described magnetic covers 2 outsides and is provided with driving chip 3, in the present embodiment, described driving chip 3 adopts sheet metal, be respectively equipped with the contact be in contact with one another on described fixing metal contact 7 and elastic metallic contact 6, two male blades 8 are connected with elastic metallic contact 6 with fixing metal contact 7 respectively, through 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 near a side of driving chip 3, opposite side at described driving chip 3 is provided with jacking block 4, one end of described jacking block 4 is resisted against on driving chip 3, the other end is that free end stretches out shell, be equipped with Compress Spring 41 on described jacking block 4.In the present embodiment, described driving chip 3 is circular, as shown in Figure 5; Driving the cross section of sheet metal 3 is arc, as shown in Figure 7.
For in the production installation process, described jacking block 4 can contact with pressure vessel enclosure better, guarantees that the deformation energy of pressure vessel promptly and accurately is passed on jacking block 4, realizes that pressure controls, and is provided with adjusting nut 42 at the free end of described jacking block 4, as shown in Figure 8.Rotate described adjusting nut 42, after can making the utility model install, guarantee adjusting nut 42 and pressure vessel enclosure good contact, after regulating, use the glue sealing.
As shown in Figure 9, or, be fixedly installed regulating arm 43 at described jacking block 4 free ends, on described regulating arm 43, adjustment screw 431 is set, rotates described adjustment screw 431, after the utility model is installed, guarantee adjustment screw 431 and pressure vessel enclosure good contact, after regulating, use the glue sealing.
As shown in figure 10, or the utility model is as a whole, on described shell, external screw thread is set, and correspondingly, a holder 14 with internal thread hole is set, and shell is screwed in the internal thread hole of described holder 14.After during use, holder 14 being installed, whole turn shell, can regulate position of the present utility model, guarantee jacking block 4 wherein can with the pressure vessel enclosure good contact, after regulating, use the glue sealing.
When the present embodiment is used, take for electric pressure cooker is example, as shown in Figure 11, Figure 12, the utility model A is arranged under the outer pot 12 of electric pressure cooker by a pressure switch support 11, then rotate adjusting nut 42, make itself and the outer pot bottom of electric pressure cooker keep good contact, and it is connected among the main circuit of electric pressure cooker, also be provided with one in the bottom of electric pressure cooker 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 chip 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, described Compress Spring 41 is squeezed in jacking block 4 on magnetic post 5 by driving chip 3, guarantee that the fixing metal contact separates with the holding contact on the elastic metallic contact, and can not automatically reset, electric pressure cooker stops heating work, heater circuit keeps separating, 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 chip 3 is the dumb-bell shape sheet metal, and whole sheet metal is plane.To guarantee that plastic deformation can occur driving chip 3 under pressure.
Driving chip 3 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 (8)
1. the non-automatic-reset pressure switch of household electrical appliance, include shell, be positioned at the magnetic support of shell, two male blades, be provided with fixing metal contact and elastic metallic contact in described magnetic support, and covered by the magnetic lid, the magnetic lid outside is provided with driving chip, be respectively equipped with the contact be in contact with one another on described fixing metal contact and elastic metallic contact, two male blades are connected with the elastic metallic contact with the fixing metal contact respectively, through the magnetic lid, the magnetic post is set, described magnetic post one end is resisted against on the elastic metallic contact, the other end of magnetic post is close in driving chip one side, opposite side at described driving chip is provided with jacking block, one end of described jacking block is resisted against on driving chip, the other end is that free end stretches out shell, it is characterized in that, be equipped with Compress Spring on described jacking block.
2. the non-automatic-reset pressure switch of household electrical appliance according to claim 1, is characterized in that, described fixing metal contact and elastic metallic contact are copper sheet.
3. the non-automatic-reset pressure switch of household electrical appliance according to claim 1 and 2, is characterized in that, described driving chip is circle or polygon.
4. the non-automatic-reset pressure switch of household electrical appliance according to claim 3, is characterized in that, the cross section of described driving chip is arc or straight line.
5. the non-automatic-reset pressure switch of household electrical appliance according to claim 1 and 2, is characterized in that, described driving chip is sheet metal.
6. the non-automatic-reset pressure switch of household electrical appliance according to claim 1 and 2, is characterized in that, at the free end of described jacking block, is provided with adjusting nut.
7. the non-automatic-reset pressure switch of household electrical appliance according to claim 1 and 2, is characterized in that, at described jacking block free end, is fixedly installed regulating arm, on described regulating arm, adjustment screw is set.
8. the non-automatic-reset pressure switch of household electrical appliance according to claim 1 and 2, is characterized in that, it arranged as a whole, on described shell, external screw thread is set, correspondingly, a holder with internal thread hole is set, shell is screwed in the internal thread hole of described holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514856.1U CN203377164U (en) | 2013-08-22 | 2013-08-22 | Non self-reset pressure switch of household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514856.1U CN203377164U (en) | 2013-08-22 | 2013-08-22 | Non self-reset pressure switch of household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203377164U true CN203377164U (en) | 2014-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514856.1U Expired - Fee Related CN203377164U (en) | 2013-08-22 | 2013-08-22 | Non self-reset pressure switch of household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203377164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751110A (en) * | 2018-06-29 | 2018-11-06 | 浙江正诚机械有限公司 | The intelligent tax control fuel oil adding machine of big flow |
-
2013
- 2013-08-22 CN CN201320514856.1U patent/CN203377164U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751110A (en) * | 2018-06-29 | 2018-11-06 | 浙江正诚机械有限公司 | The intelligent tax control fuel oil adding machine of big flow |
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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: 20140101 Termination date: 20200822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |