CN203839277U - Power-off switch, pressure switch assembly and pressure cooker - Google Patents
Power-off switch, pressure switch assembly and pressure cooker Download PDFInfo
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- CN203839277U CN203839277U CN201420232450.9U CN201420232450U CN203839277U CN 203839277 U CN203839277 U CN 203839277U CN 201420232450 U CN201420232450 U CN 201420232450U CN 203839277 U CN203839277 U CN 203839277U
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- switch
- pressure
- contact
- pressure switch
- cut
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Abstract
The utility model provides a power-off switch, a pressure switch assembly and a pressure cooker. The power-off switch is used for matching a pressure switch in use, and comprises a support rod, a contact piece and a mutation piece. The support rod and the contact piece are disposed above the pressure switch and are rotatably mounted on the pressure switch. One of the ends, far away from each other, of the support rod and the contact piece is connected with an elastic sheet of the pressure switch, and the other is in contact with a contact point of the pressure switch. The mutation piece is arranged between the ends, adjacent to each other, of the support rod and the contact piece. The power-off switch provided by the utility model is simple in structure and convenient to assemble. Controllable adjustment on the power-off switch can be realized by selecting different mutation pieces and screwing a screw in different depths, namely, the maximum pressure which can be borne by the pressure switch in an abnormal state can be self-set, the power-off switch trips to disconnect a power supply of the pressure switch when the pressure borne by the pressure switch reaches a self-set pressure value, and thus the pressure at the moment of tripping can be controlled and adjusted.
Description
Technical field
The utility model relates to field of household appliances, more specifically, relates to a kind of cut-off switch, a kind of pressure switch assembly that comprises this cut-off switch and a kind of pressure cooker that comprises this pressure switch assembly.
Background technology
At work, when its pressure switch loses efficacy, because meeting causes pressure release, for realizing its fail safe, the heating power supply that need to break before pressure release, to realize the power-off protection before pressure release for pressure cooker; The scheme that correlation technique is taked is, a cut-off switch of extra increase in pressure switch, pressure cooker is carried out to second protection, that is: the situation incision of losing efficacy in pressure switch is electric switch absolutely, to realize the power-off protection before decompression of pressure cooker, the cooperation by pressure switch and cut-off switch realizes the object of pressure cooker being carried out to duplicate protection; Yet, existing cut-off switch is all induction of signal principle by electronic component (rather than realizing power-off action by mechanical structure) functions of realizing power-off, it is disconnected that in use procedure very easily there is improper jumping in cut-off switch, cause its practicality not strong, and brought inconvenience to user's use.
Utility model content
The utility model is intended at least solve one of technical problem existing in prior art.
For this reason, the utility model provides a kind of cut-off switch, simple in structure, easy to assembly, can realize by the difference of selected sudden change part and the difference of screw screw-in depth the controllable adjustment of cut-off switch, that is: realizing the maximum pressure value that can bear when the abnormality pressure switch independently sets, when the pressure bearing when pressure switch arrives the autonomous force value of setting, cut-off switch is jumped the disconnected power supply with opening pressure switch, has realized jumping the controllable of pressure while breaking.
The embodiment of the utility model first aspect provides a kind of cut-off switch, for being used in conjunction with pressure switch, comprises pole, contact and sudden change part; Described pole and described contact are all positioned at the top of described pressure switch and are installed in rotation in described pressure switch, and described pole and described contact away from one end in one be connected with the shell fragment of described pressure switch, another contacts with the contact of described pressure switch, the increase that described shell fragment can bear pressure with described pressure switch occurs bending and deformation, to drive coupled described pole or described contact to rotate; Described pole and described contact are provided with described sudden change part between adjoining one end, and when the described pole being connected with described shell fragment or described contact turn to desired location, described sudden change part is deformed into the second hold mode by the first hold mode, so that described cut-off switch and described contact are disconnected.
The cut-off switch that the utility model provides, simple in structure, easy to assembly, and be the cut-off switch of mechanical structure formula, can realize by the difference of selected sudden change part the controllable adjustment of cut-off switch, that is: realizing the maximum pressure value that can bear when the abnormality pressure switch independently sets, when the pressure bearing when pressure switch arrives the autonomous force value of setting, cut-off switch is jumped the disconnected power supply with opening pressure switch, has realized jumping the controllable of pressure while breaking.
Wherein, sudden change part has two kinds of hold modes, that is: the state of the first hold mode and the second hold mode, the difference of the bending power that two kinds of hold modes can be born according to sudden change part and conversion mutually; And, pressure switch is along with the increase of born pressure, there is downward elastic bending deflection in shell fragment, drive the pole or the contact that are connected with shell fragment to rotate simultaneously, and in rotation process, form the bending power act on sudden change part, until sudden change part conversion hold mode makes cut-off switch and contact disconnect (that is: power-off), the part that suddenlys change after pressure reduces still keep hold mode after conversion (and: maintenance power-off), still keep off-position after realizing pressure release; In addition, the disconnected pressure of the jumping of pressure switch is greater than the normal pressure of jumping while breaking of pressure switch, and the disconnected pressure of this jumping can regulate according to the difference of selected sudden change sheet.
According to an embodiment of the present utility model, the rotating shaft of described contact is identical with the rotating shaft of described pole.
According to an embodiment of the present utility model, described contact is positioned at the top of described pole, and described pole is connected with described shell fragment, described contact contacts with described contact.
According to an embodiment of the present utility model, described contact is contact chip, and is provided with shaft hole on described contact chip.
According to an embodiment of the present utility model, one end of described contact chip is provided with on the end face of the projection that contacts with described contact, the other end and is provided with the first draw-in groove, on described pole, be provided with second draw-in groove relative with the notch of described the first draw-in groove, described sudden change part is installed between the first draw-in groove and described the second draw-in groove.
According to an embodiment of the present utility model, the both sides of described contact chip are provided with support projection, on described pole, be provided with mounting groove, on the cell wall of described mounting groove both sides, be provided with support slot, the described other end of described contact chip is positioned at described mounting groove, described support projection is supported on described support slot, and described rotating shaft is positioned at described mounting groove and described shaft hole.
According to an embodiment of the present utility model, described sudden change part is sudden change sheet, and described shell fragment is connected by screw with coupled described pole or described contact.
The embodiment of the utility model second aspect provides a kind of pressure switch assembly, comprising: pressure switch; With the cut-off switch described in above-mentioned arbitrary embodiment, described cut-off switch is arranged in described pressure switch.
The pressure switch assembly that the utility model provides, simple in structure, easy to assembly, can realize the controllable of power-off pressure.
According to an embodiment of the present utility model, described pressure switch is in series and is connected with described cut-off switch.
The embodiment of the utility model third aspect provides a kind of pressure cooker, includes the pressure switch assembly described in above-mentioned arbitrary embodiment.
The pressure cooker that the utility model provides, while realizing pressure cooker power-off by mechanical structure, pressure is controllable, and control precision is high, and practicality is good, has effectively improved user's safety in utilization.
In sum, the cut-off switch that the utility model provides, simple in structure, easy to assembly, and be the cut-off switch of mechanical structure formula, can realize by the difference of selected sudden change part and the difference of screw screw-in depth the controllable adjustment of cut-off switch, that is: realizing the maximum pressure value that can bear when the abnormality pressure switch independently sets, when the pressure bearing when pressure switch arrives the autonomous force value of setting, cut-off switch is jumped the power supply breaking with opening pressure switch, realized jumping the controllable of pressure when disconnected, effectively improved the practicality of pressure switch.
Additional aspect of the present utility model and advantage will become in description part below obviously, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the decomposition texture schematic diagram of pressure switch assembly one embodiment described in the utility model;
Fig. 2 is the sudden change part of the assembly of pressure switch shown in Fig. 1 structural representation in the first hold mode;
Fig. 3 is the sudden change part of the assembly of pressure switch shown in Fig. 1 structural representation in the second hold mode;
Fig. 4 is the sectional structure schematic diagram of pressure cooker one embodiment described in the utility model;
Fig. 5 is the A portion structure for amplifying schematic diagram in Fig. 4.
Wherein, in Fig. 1 to Fig. 5, the corresponding relation between Reference numeral and component names is:
11 cut-off switchs, 111 poles, 1,111 second draw-in grooves, 1112 mounting grooves, 1113 support slots, 112 contacts, 1121 projections, 1,122 first draw-in grooves, 1123 support projection, 1124 shaft holes, 113 sudden change parts, 114 screws, 12 pressure switches, 121 shell fragments, 122 contacts, 123 second shell fragments, 124 second contacts.
Embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from mode described here and implement, and therefore, protection range of the present utility model is not subject to the restriction of following public specific embodiment.
As shown in Figure 1 to Figure 3, the cut-off switch 11 that the utility model provides, for being used in conjunction with pressure switch 12, comprises pole 111, contact 112 and sudden change part 113; Described pole 111 and described contact 112 are all positioned at the top of described pressure switch 12 and are installed in rotation in described pressure switch 12, and described pole 111 and described contact 112 away from one end in one be connected with the shell fragment 121 of described pressure switch 12, another contacts with the contact 122 of described pressure switch 12, the increase that described shell fragment 121 can bear pressure with described pressure switch 12 occurs bending and deformation (bending direction that in Fig. 2, arrow represents shell fragment 121), to drive coupled described pole 111 or described contact 112 to rotate; Described pole 111 and described contact 112 are provided with described sudden change part 113 between adjoining one end, and when the described pole 111 being connected with described shell fragment 121 or described contact 112 turn to desired location (that is: pressure arrives the autonomous pressure of setting), described sudden change part 113 is out of shape (as shown in Figure 2) to the second hold mode (as shown in Figure 3) by the first hold mode, so that described cut-off switch 11 and described contact 122 are disconnected.
The cut-off switch 11 that the utility model provides, simple in structure, easy to assembly, and be the cut-off switch of mechanical structure formula, can realize by the difference of selected sudden change part 113 controllable adjustment of cut-off switch 11, that is: realizing the maximum pressure value that can bear when the abnormality pressure switch 12 independently sets, when the pressure bearing when pressure switch 12 arrives the autonomous force value of setting, cut-off switch 11 is jumped the disconnected power supply with opening pressure switch 12, has realized jumping the controllable of pressure while breaking.
Wherein, sudden change part 113 has two kinds of hold modes, that is: the state of the first hold mode and the second hold mode, the difference of the bending power that two kinds of hold modes can be born according to sudden change part 113 and conversion mutually; And, pressure switch 12 is along with the increase of born pressure, there is downward elastic bending deflection in shell fragment 121, drive the pole 111 or the contact 112 that are connected with shell fragment 121 to rotate simultaneously, and in rotation process, form the bending power act on sudden change part 113, until sudden change part 113 conversion hold modes make cut-off switch 11 and contact 122 disconnect (that is: power-off), the part 113 that suddenlys change after pressure reduces still keeps the hold mode (and: keep power-off) after conversion, still keeps off-position after realizing pressure release; In addition, the disconnected pressure of the jumping of pressure switch 12 is greater than the normal pressure of jumping while breaking of pressure switch 12, and the disconnected pressure of this jumping can regulate according to the difference of selected sudden change sheet.
Under pressure switch normal condition; the second shell fragment contacts with the second contact; when pressure rise is jumped disconnected pressure to pressure switch is normal; the second shell fragment is bent downwardly distortion and is separated with the second contact; realize power-off; due to the disconnected force value of the jumping of cut-off switch (and: the autonomous force value of setting) be greater than the disconnected force value of jumping of pressure switch, cut-off switch plays a protective role and does not jump disconnected action.
The cut-off switch that the utility model provides coordinates with pressure switch; play the effect of duplicate protection; in the situation that pressure switch lost efficacy; the disconnected pressure of the jumping of overpressure switch and while reaching the disconnected force value of jumping of cut-off switch; cut-off switch is jumped disconnected action; and after pressure decreased, cut-off switch keeps off-position (can carry out hand-reset).
Wherein, the disconnected pressure of the jumping of pressure switch is preferably 30～85Kpa, and the disconnected pressure of jumping of cut-off switch is preferably 100～245Kpa.
In an embodiment of the present utility model, as shown in Figure 1 to Figure 3, the rotating shaft of described contact 112 is identical with the rotating shaft of described pole 111, to reduce the volume of cut-off switch, make pole, contact and sudden change part be located along the same line, to improve the reliability coordinating between pole, contact and sudden change part simultaneously.
Certainly, contact and pole also can be arranged in parallel (that is: the rotating shaft of the two is parallel to each other, not shown), also can realize the application's object, and its aim does not depart from design philosophy of the present utility model, should belong to the application's protection range.
Wherein, as shown in Figure 1 to Figure 3, described contact 112 is positioned at the top of described pole 111, and described pole 111 is connected with described shell fragment 121, described contact 112 contacts with described contact 122.
In view of the principle of pole 111 contacts with described shell fragment 121, described contact 112 is connected with described contact 122 principle and above-described embodiment is identical, does not repeat them here, but should belong in the application's protection range.
Preferably, described contact 112 is contact chip, and on described contact chip, is provided with shaft hole 1124, and rotating shaft is arranged in shaft hole 1124.
And, one end of described contact chip is provided with on the end face of the projection 1121 that contacts with described contact 122, the other end and is provided with the first draw-in groove 1122, on described pole 111, be provided with second draw-in groove 1111 relative with the notch of described the first draw-in groove 1122, described sudden change part 113 is installed between the first draw-in groove 1122 and described the second draw-in groove 1111, and to prevent from suddenling change, part 113 drops.
Further, the both sides of described contact chip are provided with supports projection 1123, on described pole 111, be provided with mounting groove 1112, on the cell wall of described mounting groove 1112 both sides, be provided with support slot 1113, the described other end of described contact chip is positioned at described mounting groove 1112, described support projection 1123 is supported on described support slot 1113, and described rotating shaft is positioned at described mounting groove 1112 and described shaft hole 1124.
Wherein, as shown in Figures 2 and 3, the upper surface of mounting groove 1112 is cambered surface, and support slot 1113 is arranged on the peak of cambered surface, to be more conducive to pole 111, rotates.
Certainly, contact chip can be also directly by rotating shaft, to be arranged on the top of pole 111, also can realize the purpose of this utility model, should belong to the application's protection range.
Preferably, described sudden change part 113 is sudden change sheet, and described shell fragment 121 is connected by screw 114 (can be also rivet etc.) with coupled described pole 111 or described contact 112.
As shown in Figures 2 and 3, the shell fragment 121 of take is connected as example by screw 114 with coupled pole 111, wherein on shell fragment 121, be provided with screw thread, on pole 111, be provided with through hole, the screw rod of screw 114 is connected with threaded engagement through through hole, and according to the difference of the degree of depth in screw 114 screw-in shell fragments 121, force value (that is: the nut lower surface that shell fragment 121 drives screws 114 to be moved downward to screw 114 compresses the moment of pole 111) when controlling shell fragment 121 and driving poles 111 to move, and then the disconnected pressure of the jumping of controlling cut-off switch 11 (after driving pole 111 to move down setpoint distance, jumping is disconnected), that is: the difference that screws in the degree of depth in the screw of shell fragments 121 according to screw 114 is controlled the disconnected pressure of jumping (realize autonomous setting and jump disconnected force value) of cut-off switch 11, realize cut-off switch 11 and jumped the controllable of disconnected pressure.
The embodiment of the utility model second aspect provides a kind of pressure switch assembly, as shown in Figure 1 to Figure 3, comprising: pressure switch 12; With the cut-off switch 11 described in above-mentioned arbitrary embodiment, described cut-off switch 11 is arranged in described pressure switch 12.
The pressure switch assembly that the utility model provides, simple in structure, easy to assembly, can realize the controllable of power-off pressure.
More preferably, described pressure switch 12 is in series and is connected with described cut-off switch 11; This kind of electric connection mode is simple in structure, easy to assembly, and fail safe is good, can effectively reduce the manufacturing cost of product.
Certainly, can be also that pressure switch 12 all adopts control system to control with cut-off switch 11, control system, to 11 power-off of controlled pressure switch, is realized the object of pressure release by receiving the jumping break signal of pressure switch 12 transmission, also can realize the application's object.
The embodiment of the utility model third aspect provides a kind of pressure cooker, as shown in Figure 4, includes the pressure switch assembly (as shown in Figure 5) described in above-mentioned arbitrary embodiment.
The pressure cooker that the utility model provides, while realizing pressure cooker power-off by mechanical structure, pressure is controllable, controls reliability and product practicality good, has effectively improved user's safety in utilization.
Wherein, pressure cooker is electric pressure cooker.
In sum, the cut-off switch that the utility model provides, simple in structure, easy to assembly, and be the cut-off switch of mechanical structure formula, can realize by the difference of selected sudden change part and the difference of screw screw-in depth the controllable adjustment of cut-off switch, that is: realizing the maximum pressure value that can bear when the abnormality pressure switch independently sets, when the pressure bearing when pressure switch arrives the autonomous force value of setting, cut-off switch is jumped the power supply breaking with opening pressure switch, realized jumping the controllable of pressure when disconnected, effectively improved the practicality of pressure switch.
In description of the present utility model, term " installation ", " being connected ", " connection " etc. all should be interpreted broadly, and for example, " connection " can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the description of this specification, the description of term " embodiment " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a cut-off switch, for being used in conjunction with pressure switch, is characterized in that, comprises pole, contact and sudden change part;
Described pole and described contact are all positioned at the top of described pressure switch and are installed in rotation in described pressure switch, and described pole and described contact away from one end in one be connected with the shell fragment of described pressure switch, another contacts with the contact of described pressure switch, the increase that described shell fragment can bear pressure with described pressure switch occurs bending and deformation, to drive coupled described pole or described contact to rotate;
Described pole and described contact are provided with described sudden change part between adjoining one end, and when the described pole being connected with described shell fragment or described contact turn to desired location, described sudden change part is deformed into the second hold mode by the first hold mode, so that described cut-off switch and described contact are disconnected.
2. cut-off switch according to claim 1, is characterized in that,
The rotating shaft of described contact is identical with the rotating shaft of described pole.
3. cut-off switch according to claim 2, is characterized in that,
Described contact is positioned at the top of described pole, and described pole is connected with described shell fragment, described contact contacts with described contact.
4. cut-off switch according to claim 3, is characterized in that,
Described contact is contact chip, and is provided with shaft hole on described contact chip.
5. cut-off switch according to claim 4, is characterized in that,
One end of described contact chip is provided with on the end face of the projection that contacts with described contact, the other end and is provided with the first draw-in groove, on described pole, be provided with second draw-in groove relative with the notch of described the first draw-in groove, described sudden change part is installed between the first draw-in groove and described the second draw-in groove.
6. cut-off switch according to claim 5, is characterized in that,
The both sides of described contact chip are provided with support projection, on described pole, be provided with mounting groove, on the cell wall of described mounting groove both sides, be provided with support slot, the described other end of described contact chip is positioned at described mounting groove, described support projection is supported on described support slot, and described rotating shaft is positioned at described mounting groove and described shaft hole.
7. according to the cut-off switch described in any one in claim 1 to 6, it is characterized in that,
Described sudden change part is sudden change sheet, and described shell fragment is connected by screw with coupled described pole or described contact.
8. a pressure switch assembly, is characterized in that, comprising:
Pressure switch; With
Cut-off switch as described in any one in claim 1 to 7, described cut-off switch is arranged in described pressure switch.
9. pressure switch assembly according to claim 8, is characterized in that,
Described pressure switch is in series and is connected with described cut-off switch.
10. a pressure cooker, is characterized in that, includes pressure switch assembly as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232450.9U CN203839277U (en) | 2014-05-07 | 2014-05-07 | Power-off switch, pressure switch assembly and pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232450.9U CN203839277U (en) | 2014-05-07 | 2014-05-07 | Power-off switch, pressure switch assembly and pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839277U true CN203839277U (en) | 2014-09-17 |
Family
ID=51517087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420232450.9U Expired - Fee Related CN203839277U (en) | 2014-05-07 | 2014-05-07 | Power-off switch, pressure switch assembly and pressure cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985594A (en) * | 2014-05-07 | 2014-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Power outage switch, pressure switch assembly and pressure cooker |
-
2014
- 2014-05-07 CN CN201420232450.9U patent/CN203839277U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985594A (en) * | 2014-05-07 | 2014-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Power outage switch, pressure switch assembly and pressure cooker |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200507 |