CN107647779A - Overvoltage protection switch and there are its pressure means - Google Patents
Overvoltage protection switch and there are its pressure means Download PDFInfo
- Publication number
- CN107647779A CN107647779A CN201610600110.0A CN201610600110A CN107647779A CN 107647779 A CN107647779 A CN 107647779A CN 201610600110 A CN201610600110 A CN 201610600110A CN 107647779 A CN107647779 A CN 107647779A
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- China
- Prior art keywords
- contact
- switch
- touch pole
- overvoltage protection
- sealing device
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Classifications
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- 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
- A47J27/0804—Locking devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a kind of overvoltage protection switch and pressure means, the overvoltage protection switch includes：First switch terminal, second switch terminal, touch pole, locking torsion spring, Switch main body and sealing device, first switch terminal have the first contact；Second switch terminal has the second contact often contacted with the first contact；Formed with lock groove on touch pole；Formed with the connected entrance communicated with external environment condition on Switch main body；Sealing device is located in Switch main body, close touch pole is connected with sealing device, and sealing device, which drives touch pole to touch second switch terminal, when seal apparatus is configured to reach predetermined pressure by the environmental pressure that connected entrance applies makes the second contact move to open position from contact position；The first end of locking torsion spring is fixing end and the second end is movable end, and the second end of locking torsion spring coordinates in lock groove so that the second contact is maintained at open position.According to the overvoltage protection switch of the present invention, it is possible to achieve the power-off protection under exception is over-pressed.
Description
Technical field
The present invention relates to household appliance technical field, more particularly, to a kind of overvoltage protection switch and has its pressure means.
Background technology
In correlation technique, the normal pressure use range of electric pressure cooking saucepan is at 70kPa (kPa).Normally make in electric pressure cooking saucepan
During, generally use relief valve or make between the pot of electric pressure cooking saucepan and lid that (now electric pressure cooking saucepan is crack
Elastic pressure pot) mode realize normal pressure release.However, can not be just between pressure release defective valve or pot and lid
When normal crack is to discharge the gas in electric pressure cooking saucepan, easily there is situation about popping in electric pressure cooking saucepan, so as to be caused to user
Injury.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, one object of the present invention exists
It is simple in a kind of overvoltage protection switch of proposition, the structure of the overvoltage protection switch.
It is another object of the present invention to propose a kind of pressure means with above-mentioned overvoltage protection switch.
Overvoltage protection switch according to a first aspect of the present invention, including：First switch terminal, the first switch terminal tool
There is the first contact；Second switch terminal, the second switch terminal have the second contact, second contact with it is described
First contact often contacts；Touch pole, the touch pole is disposed adjacent with the second switch terminal, on the touch pole
Formed with lock groove；Switch main body, formed with the connected entrance communicated with external environment condition, wherein institute on the Switch main body
First switch terminal, the second switch terminal, the touch pole and the locking torsion spring are stated in the Switch main body
It is interior；Sealing device, the sealing device are located in the Switch main body, wherein the touch pole and the sealing device
It is connected, when the environmental pressure that the sealing device is configured to apply by the connected entrance reaches the predetermined pressure
The sealing device, which drives the touch pole to touch the second switch terminal, makes second contact be touched from described first
The contact position that point often contacts moves to the open position with first contact separation；Locking torsion spring, the locking are turned round
The first end of spring is fixing end, and the second end of the locking torsion spring is movable end, second end of the locking torsion spring
It is adapted to fit in the lock groove so that second contact is maintained at the open position.
According to the overvoltage protection switch of the present invention, simple in construction, cost is low.When overvoltage protection switch is used for pressure means,
By setting touch pole and locking torsion spring, when the pressure in pressure means reaches predetermined pressure, the first contact and second
Contact disconnects, and can make pressure means there is the heater circuit of first switch terminal and second switch terminal to disconnect, from
And the power-off protection in the case where exception is over-pressed can be effectively realized, moreover, can be incited somebody to action when the second contact is located at open position
Second contact is maintained at open position, is not in the situation that heater continues heating, adds making for pressure means
Use security.
According to some embodiments of the present invention, the first end of the touch pole is suitable to touch the second switch terminal, described
Lock groove is formed in the side at the neighbouring touch pole center of the first end of the touch pole, when described second tactile
Point is located at second end of the locking torsion spring and the periphery of the first end of the touch pole during contact position
Wall only supports.
According to some embodiments of the present invention, the lock groove is formed as the annular groove of the circumferentially extending along the touch pole.
According to some embodiments of the present invention, the overvoltage protection switch further comprises：Locking fixed seat, the locking
It is located in fixed seat formed with pilot hole, the touch pole in the pilot hole, and the first end of the touch pole is suitable to
To stretch out the pilot hole and touch the second switch terminal, the second end of the touch pole is connected with the sealing device,
Second end of wherein described locking torsion spring is supported in the locking fixed seat.
Further, the periphery wall at the second end of the touch pole is provided with the backstop muscle to stretch out, the overvoltage protection
Switch further comprises：Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are only against the inwall of the pilot hole and the backstop
Between muscle, the direction that the dynamic clamping head and quiet clamping head is configured to be directed away from the second switch terminal often promotes the touch pole.
Alternatively, the first switch terminal and the second switch terminal are located in the locking fixed seat.
Alternatively, the sealing device is diaphragm seal, the sealing dress when second contact is located at the contact position
Put to the connected entrance and bloat to block the connected entrance, it is described close when second contact is located at the open position
Seal apparatus is directed away from the direction bulging of the connected entrance.
According to some embodiments of the present invention, the predetermined pressure is P, and the P meets：140kPa≤P≤200kPa.
Alternatively, the pressure lifting surface area that the environmental pressure is acted on the sealing device is S, wherein the S expires
Foot：1mm2≤S≤100mm2。
Pressure means according to a second aspect of the present invention, including the overvoltage protection switch according to the above-mentioned first aspect of the present invention.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Substantially, or by the practice of the present invention recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become bright in the description from combination accompanying drawings below to embodiment
Show and be readily appreciated that, wherein：
Fig. 1 is the profile of overvoltage protection switch according to embodiments of the present invention, wherein the second contact is in contact position；
Fig. 2 is the top view of the overvoltage protection switch shown in Fig. 1；
Fig. 3 is another profile of overvoltage protection switch according to embodiments of the present invention, is disconnected wherein the second contact is in
Position；
Fig. 4 is the top view of the overvoltage protection switch shown in Fig. 3.
Reference：
100：Overvoltage protection switch；
1：First switch terminal；11：First contact；
2：Second switch terminal；21：Second contact；
3：Touch pole；31：Lock groove；32：Backstop muscle；
4：Locking torsion spring；41：Second end；
5：Locking fixed seat；51：Pilot hole；6：Dynamic clamping head and quiet clamping head；
7：Switch main body；71：Connected entrance；8：Sealing device；9：Wire.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein phase from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to
The embodiment of accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ",
" width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
" level ", " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", " circumference " etc. refer to
The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and
Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relatively heavy
The property wanted or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", the spy of " second " are defined
Sign can be expressed or implicitly include one or more this feature.In the description of the invention, unless otherwise saying
Bright, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, can also be in
Between medium be indirectly connected, can be the connection of two element internals.For the ordinary skill in the art, may be used
The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
The overvoltage protection switch 100 of embodiment according to a first aspect of the present invention is described below with reference to Fig. 1-Fig. 4.Overvoltage protection
Switch 100 can be used for needing the pressure means such as electric pressure cooking saucepan (not shown) for carrying out pressure cut-off protection especially
It is rigid pressure pot (i.e. in electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position)
On.When abnormal over-pressed (i.e. pressure device occurs in the normal pressure relief device such as pressure release defective valve of pressure means such as electric pressure cooking saucepan
Pressure in tool is more than its normal pressure use range such as 70kPa) when, overvoltage protection switch 100 can be by pressure device
Heater power-off in tool, heats heater stop, prevents the pressure in pressure means from further raising.
In description below the application, illustrated so that overvoltage protection switch 100 is used on electric pressure cooking saucepan as an example.Certainly, originally
The technical staff in field is appreciated that overvoltage protection switch 100 can be also used for other pressure means such as Voltage force
Stew first-class.
As Figure 1-Figure 4, the overvoltage protection switch 100 of embodiment, including first switch according to a first aspect of the present invention
Terminal 1, second switch terminal 2, touch pole 3, locking torsion spring 4, Switch main body 7 and sealing device 8.
First switch terminal 1 has the first contact 11, and second switch terminal 2 has the second contact 21, the second contact 21
Often contacted with the first contact 11.For example, as shown in figures 1 and 3, the first contact 11 is located at first switch terminal 1
Side (for example, upside in Fig. 1 and Fig. 2), the first contact 11 from the upper table of first switch terminal 1 upwardly
Protrusion is formed.
Second contact 21 is located at the free end (for example, right-hand member in Fig. 1 and Fig. 3) of second switch terminal 2, and second
Contact 21 is downwardly protrude to form from the lower surface of second switch terminal 2.Specifically, the first end of second switch terminal 2
(for example, left end in Fig. 1 and Fig. 3) is fixing end, and now the first end of second switch terminal 2 is fixed,
The first end of second switch terminal 2 does not have relative motion relative to overvoltage protection switch 100, second switch terminal 2
Second end (for example, right-hand member in Fig. 1 and Fig. 3) is movable end, and the second end of second switch terminal 2 is to transport
Dynamic.Wherein, the second contact 21 is located at above-mentioned second end of second switch terminal 2, thus, second switch terminal 2
The second end the second contact 21 can be driven to move so that the second contact 21 contacts with the first contact 11, or with first
Contact 11 separates.
First switch terminal 1 and second switch terminal 2 are connected to pressure device suitable for (for example, by way of wire 9)
In the heater circuit (not shown) for having such as electric pressure cooking saucepan, the heater circuit includes heater.Work as pressure device
When having such as electric pressure cooking saucepan normal use, the first contact 11 remains and contacted that heater circuit is normal with the second contact 21
Conducting, heater work, to be heated to food in pressure means etc..
Alternatively, the outer surface of the first contact 11 and the second contact 21 can be collectively formed by cambered surface and plane respectively, should
Plane is located at the top of the first contact 11 and the second contact 21, thus, due to the first contact 11 and the second contact 21
Between contact be face contact, contact area is big so that the first contact 11 contacts well with the second contact 21 so that
It ensure that the reliability of heater circuit.Certainly, the outer surface of the first contact 11 and the second contact 21 can also be formed as
Outwardly sphere (not shown).
Touch pole 3 is disposed adjacent with second switch terminal 2, for example, as shown in figures 1 and 3, touch pole 3 and first
Switch terminal 1 is located at the same side (for example, downside in Fig. 1 and Fig. 3) of second switch terminal 2.Touch pole 3
Do not contacted with second switch terminal 2 under normal conditions (for example, when the second contact 21 is located at contact position).Touch
Bar 3, which is configured to when environmental pressure reaches predetermined pressure, touches second switch terminal 2 makes the second contact 21 from first
The contact position that contact 11 often contacts moves to the disconnection position separated with the first contact 11 (as depicted in figs. 1 and 2)
Put (as shown in Figure 3 and Figure 4).Here, it is necessary to illustrate, when overvoltage protection switch 100 is used for pressure means
Such as when on electric pressure cooking saucepan, " environmental pressure " can be understood as pressure of the pressure means for example in electric pressure cooking saucepan.Touch
Formed with lock groove 31 on bar 3.
For example, when the pressure when pressure means for example in electric pressure cooking saucepan reaches predetermined pressure, touch pole 3 and second switch end
Son 2 contacts and touching second switch terminal 2 makes the second contact 21 separate and (not contact) with the first contact 11, from
And heater circuit is disconnected, heater is not worked, and pressure of the pressure means for example in electric pressure cooking saucepan can be reduced gradually,
The protection to pressure means such as electric pressure cooking saucepan is realized, and because pressure means such as electric pressure cooking saucepan does not discharge high temperature height
The gas of pressure, so as to be damaged to user.
Alternatively, predetermined pressure P, P meet：140kPa≤P≤200kPa.Its concrete numerical value can be according to actual pressure
The type of power utensil such as electric pressure cooking saucepan and specifically set, preferably to meet actual requirement.
Formed with the connected entrance 71 communicated with external environment condition on Switch main body 7, for example, as shown in figures 1 and 3, even
Port 71 can be formed in the bottom of Switch main body 7.When overvoltage protection switch 100 is used for pressure means such as Voltage force
During pot, " external environment condition " refers to pressure means for example inside electric pressure cooking saucepan.Wherein locking fixed seat 5 is fixed on out
Close in body 7.Thus, by set can accommodate first switch terminal 1, second switch terminal 2, touch pole 3,
The Switch main body 7 of locking torsion spring 4, improve the integration of overvoltage protection switch 100.
Sealing device 8 is located in Switch main body 7, and touch pole 3 is connected with sealing device 8, and sealing device 8 is configured to lead to
Cross the environmental pressure of the application of connected entrance 71 when reaching predetermined pressure, sealing device 8 drives touch pole 3 to touch second switch
Terminal 2 makes the second contact 21 move to what is separated with the first contact 11 from the contact position often contacted with the first contact 11
Open position.Thus, by setting sealing device 8, sealing device 8 can be by the inside of Switch main body 7 and pressure means
Such as electric pressure cooking saucepan internal insulation is opened, make to have between the inside of Switch main body 7 and pressure means such as electric pressure cooking saucepan inside
Pressure difference, so as to which when pressure means such as electric pressure cooking saucepan internal abnormality overvoltage, sealing device 8 can be in the effect of pressure difference
Lower promotion touch pole 3 is moved up to touch second switch terminal 2.
The first end of locking torsion spring 4 is fixing end, and the above-mentioned first end of locking torsion spring 4 is fixed, locking torsion spring
4 the second end 41 is movable end, and above-mentioned second end 41 of locking torsion spring 4 is movable, locking relative to its first end
Above-mentioned second end 41 of torsion spring 4 is adapted to fit in lock groove 31 so that the second contact 21 is maintained at open position.By
This, passes through the cooperation of locking torsion spring 4 and touch pole 3, the first use of the overvoltage protection switch 100 (He of the first contact 11
Second contact 21 disconnects) after can not Self-resetting, i.e. the first contact 11 and the second contact 21 will not contact again makes heating
Circuit turn-on, so as to add the security that pressure means such as electric pressure cooking saucepan uses.
Overvoltage protection switch 100 according to embodiments of the present invention, simple in construction, cost is low.When overvoltage protection switch 100
During for pressure means such as electric pressure cooking saucepan, by setting touch pole 3 and locking torsion spring 4, when pressure means such as voltage
When pressure in power pot reaches predetermined pressure, the first contact 11 and the second contact 21 disconnect, and can make pressure means example
Such as electric pressure cooking saucepan there is the heater circuit of first switch terminal 1 and second switch terminal 2 to disconnect, so as to effective
The power-off protection in the case where exception is over-pressed is realized, moreover, can be by the second contact when the second contact 21 is located at open position
21 are maintained at open position, are not in the situation that heater continues heating, add pressure means such as Voltage force
The safety in utilization of pot.In addition, by setting Switch main body 5, can be by first switch terminal 1, second switch terminal
2nd, touch pole 3, locking torsion spring 4 and sealing device 8 are integrated in Switch main body 5 so that overvoltage protection switch 100
For a global facility, in use, conveniently and overvoltage protection switch 100 quickly can be attached into pressure means 200
Such as electric pressure cooking saucepan, improve efficiency of assembling.By setting sealing device 6, overvoltage protection switch can be effectively ensured
The reliability of 100 actions.
According to some embodiments of the present invention, the first end (for example, upper end in Fig. 1 and Fig. 3) of touch pole 3 is suitable to
Touch second switch terminal 2, for example, as shown in figures 1 and 3, touch pole 3 relative to second switch terminal 2 can on
Lower movement, when touch pole 3 is located at the position shown in Fig. 1, the second contact 21 remains with the first contact 11 and connect
Touch, when pressure anomaly of the pressure means for example in electric pressure cooking saucepan, touch pole 3 can move up and promote second to open
Terminal 2 is closed, the second contact 21 is disconnected with the first contact 11, realizes power-off protection.
Wherein, lock groove 31 formed the side at the center of neighbouring touch pole 3 of the above-mentioned first end of touch pole 3 (for example,
Downside in Fig. 1 and Fig. 3), when the second contact 21 is located at contact position, due to the torsion of itself of locking torsion spring 4
Effect, above-mentioned second end 41 of locking torsion spring 4 and the periphery wall of the above-mentioned first end of touch pole 3 only support, as Fig. 1 with
Shown in Fig. 2；When pressure anomaly of the pressure means for example in electric pressure cooking saucepan, touch pole 3 will move up, herein mistake
Cheng Zhong, above-mentioned second end 41 of locking torsion spring 4 will move down relative to side wall of the touch pole 3 along touch pole 3, by
In the twisting force of locking torsion spring 4, above-mentioned second end 41 of locking torsion spring 4 can enter in lock groove 31 and with lock
Only the inwall of groove 31 only supports, as shown in Figure 3 and Figure 4, now due to the position-limiting action of locking torsion spring 4, touch pole 3
It will not move down, second switch terminal 2 is returned back to the second contact 21 and keep what is contacted to contact with the first contact 11
Position, so as to which the safety in utilization of pressure means such as electric pressure cooking saucepan be effectively ensured.
Alternatively, lock groove 31 is formed as the annular groove of the circumferentially extending along touch pole 3, simplifies adding for touch pole 3
Work technique, and the installation of touch pole 3 is facilitated, so as to improve efficiency of assembling, and reduce cost.Certainly, lock
Only groove 31 can also be inwardly concaved by a circumferential part for touch pole 3 and formed (not shown).It is understood that
The concrete shape of lock groove 31 can specifically be set according to actual requirement, be located at as long as can play in the second contact 21
Coordinate during open position with locking torsion spring 4 by the locking of touch pole 3.
According to some embodiments of the present invention, overvoltage protection switch 100 further comprises：Locking fixed seat 5, wherein locking
Only above-mentioned second end 41 of torsion spring 4 is supported in locking fixed seat 5.For example, as Figure 1-Figure 4, locking torsion spring
4 above-mentioned second end 41 is supported on the upper surface of locking fixed seat 5, and touch pole 3 is locked so as to be effectively guaranteed
Reliability only.Wherein, locking torsion spring 4 may be mounted in locking fixed seat 5, and now locking torsion spring 4 is above-mentioned
First end can be fixed in locking fixed seat 5.
It is located in locking fixed seat 5 formed with pilot hole 51, touch pole 3 in pilot hole 51, and touch pole 3 is above-mentioned
First end is suitable to stretch out the shake-up second switch of pilot hole 51 terminal 2, and pilot hole 51 has guide effect to touch pole 3,
To ensure the accuracy of the motion of touch pole 3.Alternatively, the bearing of trend of touch pole 3 and the place of second switch terminal 2
Plane it is vertical, as shown in figure 1, thus, it is possible to preferably touching second switch terminal 2 makes the second contact 21 and the
One contact 11 separates.
Further, the periphery wall at the second end of touch pole 3 is provided with the backstop muscle 32 to stretch out, and overvoltage protection is opened
100 are closed to further comprise：Dynamic clamping head and quiet clamping head 6, dynamic clamping head and quiet clamping head 6 stop the inwall for being against pilot hole 51 (for example, figure
Roof in 1 and Fig. 3) between backstop muscle 32, dynamic clamping head and quiet clamping head 6 is configured to be directed away from second switch terminal 2
Direction often promote touch pole 3.For example, dynamic clamping head and quiet clamping head 6 can be spring, spring is set in outside touch pole 3, and
The both ends of spring are only supported with the roof and backstop muscle 32 of pilot hole 51 respectively, often to promote touch pole 3 downwards, that is, work as pressure
When pressure of the power utensil for example in electric pressure cooking saucepan is less than predetermined pressure, touch pole 3 can reset under the action of the spring.
Alternatively, first switch terminal 1 and second switch terminal 2 are located in locking fixed seat 5.Certainly, first switch
Terminal 1 and second switch terminal 2 may be also secured on the inwall of Switch main body 7 hereinafter, or be directly arranged in pressure
Power utensil (not shown) for example on electric pressure cooking saucepan.It is understood that first switch terminal 1 and second switch end
The specific set location of son 2 can specifically be set according to actual requirement, preferably to meet actual requirement.
Wherein, the second end of touch pole 3 is connected with sealing device 8.For example, as shown in figures 1 and 3, sealing device
It is suitable to be fixed in mounting groove formed with mounting groove, above-mentioned second end of touch pole 3 on 8.Sealing device 8 is configured to lead to
The environmental pressure (for example, pressure means such as electric pressure cooking saucepan internal pressure) for crossing the application of connected entrance 71 reaches predetermined pressure
When, sealing device 8 drive touch pole 3 to touch second switch terminal 2.Sealing device 8 is used for inside Switch main body 7
Separated with connected entrance 71, for example, being opened with pressure means such as electric pressure cooking saucepan internal insulation, so that inside Switch main body 7
There is pressure difference between pressure means such as electric pressure cooking saucepan inside, so as to work as pressure means such as electric pressure cooking saucepan internal abnormality
When over-pressed, sealing device 8 can promote touch pole 3 to move up to touch second switch terminal 2 in the presence of pressure difference.
Alternatively, sealing device 8 is diaphragm seal, and when the second contact 21 is located at contact position, sealing device 8 is to even
Port 71 is bloated to block connected entrance 71, for example, as shown in figure 1, the edge of diaphragm seal and for blocking connected entrance
Two layers of sealing is played a part of in 71 bottom, is effectively guaranteed the reliability of the action of touch pole 3.When the second contact 21
During positioned at open position, sealing device 8 is directed away from the direction bulging of connected entrance 71, as shown in Figure 3.Now seal
Device 8 can be made of flexible material, can further improve the sealing effectiveness of sealing device 8.
Alternatively, the pressure lifting surface area that environmental pressure is acted on sealing device 8 is S, and wherein S meets：1mm2≤S
≤100mm2.For example, when overvoltage protection switch 100 is used for pressure means such as electric pressure cooking saucepan, S is in apparatus body
The pressure lifting surface area that acts on sealing device 8 of pressure.
Overvoltage protection switch 100 according to embodiments of the present invention, it is possible to achieve when pressure of the pressure means for example in electric pressure cooking saucepan
When power is between 140kPa-200kPa, deenergization, overvoltage protection is realized.The original of this kind of overvoltage protection switch 100
Reason be steam of the pressure means for example in electric pressure cooking saucepan by the access switch body 7 of connected entrance 71, when steam pressure is more than
During the elastic force of such as spring of dynamic clamping head and quiet clamping head 6, sealing device 8 is driven on steam top, drives touch pole 3 to move, and touches second
Switch terminal 2, it can flick upwards after the stress of second switch terminal 2 so that the second contact 21 of second switch terminal 2
As second switch terminal 2 moves up, separate the first contact 11 and the second contact 21, touch pole 3 is transported upwards
After dynamic, when touch pole 3 rises to lock groove 31 thereon with locking 4 substantially face of torsion spring, locking torsion spring 4 will be
It is caught in the presence of itself torsion in lock groove 31, to block touch pole 3, pressure of the pressure means for example in electric pressure cooking saucepan
Power declines, and touch pole 3 can not reset.Because touch pole 3 is unable to return, second switch terminal 2 can not return back to
The position that two contacts 21 contact with the first contact 11, pressure protection can be effectively increased, increase pressure means such as voltage
The security of power pot, compared with traditional mechanical pressure relief, more securely and reliably.
The pressure means of embodiment such as electric pressure cooking saucepan according to a second aspect of the present invention, including according to the above-mentioned first party of the present invention
The overvoltage protection switch 100 of face embodiment.
Wherein, pressure means include apparatus body and overvoltage protection switch 100.Overvoltage protection switch 100 is located at utensil sheet
On body, wherein environmental pressure is the pressure in apparatus body, is touched when the pressure in apparatus body reaches predetermined pressure
Motion touches second switch terminal 2 to bar 3 upwards, while locking torsion spring 4 can be by the locking of touch pole 3 so that the second contact
21 are maintained at open position.For example, specifically, apparatus body includes pot and lid, the top of pot is opened wide,
Cover cap is located at the top of pot, wherein, overvoltage protection switch 100 is located on lid, and positioned at the center of lid.
Alternatively, overvoltage protection switch 100 is vertically arranged, and now connected entrance 71 can directly communicate with pot nside, pot
Interior pressure can act directly on the bottom of touch pole 3 by connected entrance 71.Seal is provided between pot and lid,
To ensure the sealing between pot and lid.
Pressure means according to embodiments of the present invention such as electric pressure cooking saucepan, pressure anomaly power-off protection can be effectively provided, and
Reduce cost.
Other of pressure means according to embodiments of the present invention such as electric pressure cooking saucepan are formed and operated common for this area
All it is known for technical staff, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine the embodiment or example describe it is specific
Feature, structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, it is right
The schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure,
Material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Do not taking off
In the case of principle and objective from the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments,
The scope of the present invention is limited by claim and its equivalent.
Claims (10)
- A kind of 1. overvoltage protection switch, it is characterised in that including：First switch terminal, the first switch terminal have the first contact；Second switch terminal, the second switch terminal have the second contact, and second contact and first contact are normal Contact；Touch pole, the touch pole is disposed adjacent with the second switch terminal, formed with lock groove on the touch pole；Switch main body, formed with the connected entrance communicated with external environment condition on the Switch main body, wherein the first switch end Sub, described second switch terminal, the touch pole and the locking torsion spring are in the Switch main body；Sealing device, the sealing device are located in the Switch main body, wherein the touch pole and the sealing device phase Even, the environmental pressure that the sealing device is configured to apply by the connected entrance reaches predetermined pressure when institute State sealing device drive the touch pole touch the second switch terminal make second contact from first contact The contact position often contacted moves to the open position with first contact separation；Locking torsion spring, the first end of the locking torsion spring are fixing end, and the second end of the locking torsion spring is movable end, institute Second end for stating locking torsion spring is adapted to fit in the lock groove so that second contact is maintained at the disconnection Position.
- 2. overvoltage protection switch according to claim 1, it is characterised in that the first end of the touch pole is suitable to The second switch terminal is touched, the lock groove forms the neighbouring shake-up in the first end of the touch pole The side at bar center, second end of the locking torsion spring and institute when second contact is located at the contact position The periphery wall for stating the first end of touch pole only supports.
- 3. overvoltage protection switch according to claim 1, it is characterised in that the lock groove is formed as along described The annular groove of the circumferentially extending of touch pole.
- 4. according to the overvoltage protection switch any one of claim 1-3, it is characterised in that further comprise：Locking fixed seat, it is located at formed with pilot hole, the touch pole in the pilot hole in the locking fixed seat, and The first end of the touch pole is suitable to stretch out the pilot hole and touches the second switch terminal, and the second of the touch pole End is connected with the sealing device, wherein second end of the locking torsion spring is supported in the locking fixed seat.
- 5. overvoltage protection switch according to claim 4, it is characterised in that outside the second end of the touch pole Perisporium is provided with the backstop muscle to stretch out,Further comprise：Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are only against between the inwall of the pilot hole and the backstop muscle, the bullet The direction that property return unit is configured to be directed away from the second switch terminal often promotes the touch pole.
- 6. overvoltage protection switch according to claim 4, it is characterised in that the first switch terminal and described Second switch terminal is located in the locking fixed seat.
- 7. overvoltage protection switch according to claim 1, it is characterised in that the sealing device is diaphragm seal, When second contact is located at the contact position, the sealing device is bloated to the connected entrance to block the connection Mouthful, when second contact is located at the open position, the sealing device is directed away from the direction drum of the connected entrance Go out.
- 8. overvoltage protection switch according to claim 1, it is characterised in that the predetermined pressure is P, the P Meet：140kPa≤P≤200kPa.
- 9. overvoltage protection switch according to claim 1, it is characterised in that the environmental pressure acts on described Pressure lifting surface area on sealing device is S, wherein the S meets：1mm2≤S≤100mm2。
- 10. a kind of pressure means, it is characterised in that including the overvoltage protection according to any one of claim 1-9 Switch.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610600110.0A CN107647779B (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure appliance with same |
| EP16908360.7A EP3318163B1 (en) | 2016-07-26 | 2016-08-15 | Excess pressure protection switch and pressure appliance provided with same |
| PCT/CN2016/095335 WO2018018670A1 (en) | 2016-07-26 | 2016-08-15 | Excess pressure protection switch and pressure appliance provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610600110.0A CN107647779B (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure appliance with same |
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| Publication Number | Publication Date |
|---|---|
| CN107647779A true CN107647779A (en) | 2018-02-02 |
| CN107647779B CN107647779B (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610600110.0A Active CN107647779B (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure appliance with same |
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| Country | Link |
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| CN (1) | CN107647779B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112256085A (en) * | 2019-07-22 | 2021-01-22 | 浙江三花制冷集团有限公司 | Pressure controller |
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| CN107647779B (en) | 2020-09-22 |
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