CN206950042U - Overvoltage protection switch and there are its pressure means - Google Patents
Overvoltage protection switch and there are its pressure means Download PDFInfo
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- CN206950042U CN206950042U CN201720154195.4U CN201720154195U CN206950042U CN 206950042 U CN206950042 U CN 206950042U CN 201720154195 U CN201720154195 U CN 201720154195U CN 206950042 U CN206950042 U CN 206950042U
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Abstract
The utility model discloses a kind of overvoltage protection switch and pressure means, the overvoltage protection switch includes：Switch main body, formed with connected entrance on Switch main body；First switch terminal, first switch terminal have the first contact；Touch part, the first end of touch part is provided with the second switch terminal with the second contact, touch part is movable between the contact position and the open position of the second contact and the first contact separation of the second contact and the first contact, second end of touch part is provided with seal, and seal drives touch part to move to open position from contact position when seal is configured to reach predetermined pressure by the environmental pressure that connected entrance applies；Locking system, locking system are located in one of them in Switch main body and touch part, and another when touch part is located at open position in locking system and Switch main body and touch part coordinates so that touch part is maintained at open position.According to overvoltage protection switch of the present utility model, the power-off protection under achievable exception is over-pressed.
Description
Technical field
Household appliance technical field is the utility model is related to, more particularly, to a kind of overvoltage protection switch and there is its pressure device
Tool.
Background technology
In correlation technique, the normal pressure use range of electric pressure cooking saucepan is at 70kPa (kPa).In electric pressure cooking saucepan normal use
During, generally use relief valve or make crack between the pot of electric pressure cooking saucepan and lid (now electric pressure cooking saucepan for elasticity press
Power pot) mode realize normal pressure release.However, between pressure release defective valve or pot and lid can not normally crack to discharge
During gas in electric pressure cooking saucepan, easily there is situation about popping in electric pressure cooking saucepan, so as to be damaged to user.Moreover, above-mentioned adopt
The pressure transient of pressure release is carried out with the mode of crack, and easily because the gas leakage of HTHP damages to user.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art.It is therefore, of the present utility model
One purpose is to propose a kind of overvoltage protection switch, and the structure of the overvoltage protection switch is simple.
Another purpose of the present utility model is to propose a kind of pressure means with above-mentioned overvoltage protection switch.
According to the overvoltage protection switch of the utility model first aspect, including：Switch main body, formed on the Switch main body
There is the connected entrance communicated with external environment condition；First switch terminal, the first switch terminal is located in the Switch main body, described
First switch terminal has the first contact；Touch part, the touch part are movingly set between contact position and open position
In the Switch main body, the first end of the touch part is provided with second switch terminal, and the second switch terminal has second
Contact, the second contact described in when the touch part is located at the contact position and first contact, when the shake-up
Second contact described in when part is located at the open position and first contact separation, the second end of the touch part are provided with sealing
Part, the seal drives institute when the seal is configured to reach predetermined pressure by the environmental pressure that the connected entrance applies
State touch part and move to the open position from the contact position；Locking system, the locking system are located at the switch originally
In one of them in body and the touch part, when the touch part is located at the open position locking system with it is described
Another in Switch main body and the touch part coordinates so that the touch part is maintained at the open position.
Simple in construction according to overvoltage protection switch of the present utility model, cost is low.When overvoltage protection switch is used for pressure device
It is close when the pressure in pressure means reaches predetermined pressure by the way that second switch terminal to be located to the first end of touch part during tool
Sealing can drive touch part the second contact of second switch terminal is separated in time with the first contact of first switch terminal, this
Sample can be such that the heater circuit with first switch terminal and second switch terminal of pressure means disconnects rapidly, so as to ensure that
In the case where exception is over-pressed, the reliability of power-off protection, further increases the safety in utilization of pressure means, moreover, working as touch part position
Touch part can be maintained at open position by locking system when open position, and now the second contact remains with the first contact
Not contact condition, be not in the situation that heater continues heating, further add the safe to use of pressure means
Property.In addition, by setting Switch main body, can be by first switch terminal, touch part, second switch terminal, seal and lock
Locking apparatus is integrated in Switch main body so that overvoltage protection switch is a global facility, in use, can conveniently and quickly
Overvoltage protection switch is attached to pressure means, improves efficiency of assembling.Moreover, by setting seal, can be effectively ensured
The reliability of overvoltage protection switch action.
According to some embodiments of the utility model, formed with neck in the side wall of the first end of the touch part,
The second switch terminal is fastened on the neck.
According to some embodiments of the utility model, the touch part is touch pole, the touch part and the connected entrance
It is coaxially disposed.
According to some embodiments of the utility model, formed with locking hole on the touch part, shape on the Switch main body
It is movably arranged in the holding tank into having towards the unlimited holding tank of the touch part, the locking system, is touched when described
Moving part is located at the locking system during open position and stretches out the holding tank with locking hole cooperation so that the shake-up
Part is maintained at the open position.
According to some embodiments of the utility model, the locking system includes：Lock piece, the lock piece are located at described
In holding tank；And elastic component, the elastic component are located between the inwall of the holding tank and the lock piece, the elastic component structure
The direction towards the touch part central axis is caused often to promote the lock piece.
According to some embodiments of the utility model, fixed seat is provided with the Switch main body, is formed in the fixed seat
There is pilot hole, the touch part is movably located at the pilot hole.
According to some embodiments of the utility model, the periphery wall at second end of the touch part is provided with to extension
The backstop muscle stretched, the overvoltage protection switch further comprise：Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are only against the fixation
Between seat and the backstop muscle, the dynamic clamping head and quiet clamping head is configured to often promote the touch part towards the direction of the connected entrance.
According to some embodiments of the utility model, the seal is diaphragm seal, when the touch part connects positioned at described
The seal is bloated to block the connected entrance to the connected entrance when touching position, when the touch part is located at the disconnection position
The seal is directed away from the direction bulging of the connected entrance when putting.
According to some embodiments of the utility model, the predetermined pressure is P, and the P meets：140kPa≤P≤
200kPa。
According to the pressure means of the utility model second aspect, including the overvoltage according to the above-mentioned first aspect of the utility model
Protection switch.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is to be in contact position according to the profile of the overvoltage protection switch of the utility model embodiment, wherein touch part
Put；
Fig. 2 is according to another profile of the overvoltage protection switch of the utility model embodiment, wherein touch part
Open position.
Reference：
100：Overvoltage protection switch；
1：Switch main body；11：Connected entrance；
12：Fixed seat；121：Holding tank；122：Pilot hole；
2：First switch terminal；21：First contact；
3：Touch part；31：Locking hole；32：Backstop muscle；
4：Second switch terminal；41：Second contact；
5：Seal；
6：Locking system；61：Lock piece；62：Elastic component；
7：Dynamic clamping head and quiet clamping head；8：Wire.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings
Orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, unless otherwise indicated, the implication of " multiple "
It is two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
" under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features
The other characterisation contact crossed between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature directly over second feature and oblique upper, or only
Represent that fisrt feature level height is less than second feature.
Overvoltage protection switch 100 below with reference to Fig. 1 and Fig. 2 descriptions according to the utility model first aspect embodiment.Cross
Pressure 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 on rigid pressure pot (i.e. in electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position).When
There is the abnormal over-pressed (pressure i.e. in pressure means in the normal pressure relief device such as pressure release defective valve of pressure means such as electric pressure cooking saucepan
More than its normal pressure use range such as 70kPa) when, can be with according to the overvoltage protection switch 100 of the utility model embodiment
Heater in pressure means is powered off, heater stop is heated, prevents the pressure in pressure means from further raising,
Ensure the security that user uses.In the description below the application, so that overvoltage protection switch 100 is used on electric pressure cooking saucepan as an example
Illustrate.Certainly, it will be understood to those skilled in the art that overvoltage protection switch 100 can be also used for other pressure devices
It is first-class to have such as electric pressure pot.
As depicted in figs. 1 and 2, according to the overvoltage protection switch 100 of the utility model first aspect embodiment, including switch
Body 1, first switch terminal 2, touch part 3, second switch terminal 4, seal 5 and locking system 6.
Formed with the connected entrance 11 communicated with external environment condition on Switch main body 1.For example, as depicted in figs. 1 and 2, connected entrance
11 can form in the bottom of Switch main body 1.Here, it is necessary to which explanation, " external environment condition " can be understood as working as overvoltage protection
When switch 100 is used for pressure means such as electric pressure cooking saucepan, outside, the inside of pressure means such as electric pressure cooking saucepan of Switch main body 1.
Referring to Fig. 1 and Fig. 2, first switch terminal 2, touch part 3, second switch terminal 4, seal 5 and locking system 6
It can be each provided in Switch main body 1.Thus, first switch terminal 2, touch part 3, second switch terminal can be accommodated by setting
4th, the Switch main body 1 of seal 5 and locking system 6, the integration of overvoltage protection switch 100 is improved.In actual use,
Overvoltage protection switch 100 need to be only arranged on to pressure means for example on electric pressure cooking saucepan and by the cut-in pressure of overvoltage protection switch 100
The heater circuit (not shown) of utensil such as electric pressure cooking saucepan.Wherein, overvoltage protection switch 100 can be installed removably
In pressure means for example on electric pressure cooking saucepan, in order to the dismounting and replacing of overvoltage protection switch 100.
First switch terminal 2 has the first contact 21.Touch part 3 in contact position (as shown in Figure 1) and open position (such as
Shown in Fig. 2) between be movingly located in Switch main body 1, the first end (for example, upper end in Fig. 1 and Fig. 2) of touch part 3 is set
There is second switch terminal 4, second switch terminal 4 has the second contact 41, the second contact 41 when touch part 3 is located at contact position
Contacted with the first contact 21, when touch part 3 is located at open position, the second contact 41 separates with the first contact 21.When touch part 3
During motion, second switch terminal 4 can move with touch part 3, so as to which touch part 3 can drive second switch terminal 4 to exist
Moved between contact position and open position to realize the of the second contact 41 of second switch terminal 4 and first switch terminal 2
One contact 21 is contacting and separating and (not contacted).Second end of touch part 3 is provided with seal 5, and seal 5 is configured to pass through company
The environmental pressure that port 11 applies is when reaching predetermined pressure, seal 5 drives touch part 3 to move to from contact position to disconnect position
Put.Here, it is necessary to illustrate, when overvoltage protection switch 100 is used for pressure means for example on electric pressure cooking saucepan, " environmental pressure "
It can be understood as pressure of the pressure means for example in electric pressure cooking saucepan.Seal 5 can be by the inside of Switch main body 1 and pressure means example
As electric pressure cooking saucepan internal insulation is opened, make that there is pressure difference between the inside of Switch main body 1 and pressure means such as electric pressure cooking saucepan inside, from
And when pressure means such as electric pressure cooking saucepan internal abnormality overvoltage, seal 5 can drive shake-up in the presence of the pressure difference of both sides
Part 3 moves to open position from contact position, the second contact 41 is disconnected with the first contact 21.
When pressure means such as electric pressure cooking saucepan normal work, the second contact 41 and the first contact 21 keep normal contact condition
So that heater normal work, now touch part 3 is located at contact position, as shown in Figure 1；When pressure means such as electric pressure cooking saucepan
When interior pressure reaches predetermined pressure (for example, abnormal over-pressed), touch part 3 can drive second switch terminal 4 from contact position
Open position is moved to, the second contact 41 is separated with the first contact 21, as shown in Fig. 2 now heater circuit disconnects, heating dress
Put and be stopped, user is damaged so as to avoid pressure of the pressure means for example in electric pressure cooking saucepan from continuing to rise,
The protection to pressure means such as electric pressure cooking saucepan is also achieved simultaneously.In above process, because second switch terminal 4 can be with
Touch part 3 is synchronized with the movement, and can realizes that rapidly the second contact 41 and first is touched while seal 5 drives the motion of touch part 3
The separation of point 21, so as to further ensure the security that pressure means such as electric pressure cooking saucepan uses.It is in addition, new according to this practicality
The overvoltage protection switch 100 of type embodiment, which avoids, traditional carries out pressure instability caused by pressure release by the way of the crack
The problem of fixed and because of HTHP gas leakage damages to user.
Alternatively, predetermined pressure P, P meet：140kPa≤P≤200kPa.Its concrete numerical value can be according to actual pressure
The type of utensil such as electric pressure cooking saucepan and specifically set, preferably to meet actual requirement.
For example, as depicted in figs. 1 and 2, first switch terminal 2 and second switch terminal 4 can be arranged up and down, and first opens
The lower section that terminal 2 is located at second switch terminal 4 is closed, the first contact 21 is located on the upper surface of first switch terminal 2 and by first
A part of formation protruding upward of the upper surface of switch terminal 2.Second switch terminal 4 is horizontally disposed, can so reduce second
The space-consuming of switch terminal 4 in the vertical direction, so as to reduce the volume of whole overvoltage protection switch 100, specifically, the
One end (for example, left end in Fig. 1 and Fig. 2) of two switch terminals 4 is connected with touch part 3, and the second contact 41 is located at second switch
The other end (for example, right-hand member in Fig. 1 and Fig. 2) of terminal 4 and with the first contact face about 21, can so be effectively ensured
One contact 21 contacts well with the second contact 41, and then can ensure the normal work of pressure means such as electric pressure cooking saucepan.Moreover,
Reference picture 1 simultaneously combines Fig. 2, and touch part 3 can move up and down in Switch main body 1, specifically, when touch part 3 is located at shown in Fig. 1
Contact position when, the second contact 41 remains with the first contact 21 and contacted, and now pressure means such as electric pressure cooking saucepan can be with
Carry out normal heating work；When pressure anomaly of the pressure means for example in electric pressure cooking saucepan, touch part 3 can move up simultaneously
Drive second switch terminal 4 to be directed away from the direction movement of first switch terminal 2 together, make the second contact 41 and the first contact 21
Disconnect, realize power-off protection.Thus, when touch part 3 moves up and down between contact position and open position, second switch end
Son 4 moves up and down with touch part 3, and now second switch terminal 4 generally remains horizontal in whole motion process, and second
Switch terminal 4 is hardly damaged, so as to extend the service life of overvoltage protection switch 100.
Alternatively, the surfaces opposite to each other of the first contact 21 and the second contact 41 can be common by cambered surface and plane respectively
Form, the plane is located at the top of the first contact 21 and the second contact 41, thus, due to the first contact 21 and the second contact 41 it
Between contact be face contact, contact area is big so that the first contact 21 contacts well with the second contact 41, is heated so as to ensure that
The reliability of circuit.Certainly, the surfaces opposite to each other of the first contact 21 and the second contact 41 can also be formed as outwardly
Cambered surface (not shown) such as sphere.It is understood that the concrete shape of the first contact 21 and the second contact 41 can be with
Specifically set according to actual requirement, preferably to meet actual requirement.
First switch terminal 2 and second switch terminal 4 are connected to pressure means suitable for (for example, by way of wire 8)
Such as in the heater circuit of electric pressure cooking saucepan, the heater circuit includes heater.When pressure means such as electric pressure cooking saucepan normally makes
Used time, the first contact 21 remain and contacted that heater circuit often turns on the second contact 41, heater can with normal work,
To be heated to food in pressure means etc..When pressure means such as electric pressure cooking saucepan internal abnormality overvoltage, the band of touch part 3
The dynamic motion of second switch terminal 4 makes the second contact 41 be separated with the first contact 21, and now heater circuit disconnects, heater stop
Heating, pressure of the pressure means for example in electric pressure cooking saucepan will not continue to rise.
Locking system 6 is located in one of them in Switch main body 1 and touch part 3, when touch part 3 is located at open position
When, another in locking system 6 and Switch main body 1 and touch part 3 coordinate so that touch part 3 is maintained at open position.Here
Including following two situations：Firstth, locking system 6 is located on Switch main body 1, when touch part 3 is located at open position, locking dress
6 are put with touch part 3 to coordinate so that touch part 3 is maintained at open position, as depicted in figs. 1 and 2；Firstth, locking system 6 is located at tactile
On moving part 3, when touch part 3 is located at open position, locking system 6 and Switch main body 1 coordinate so that touch part 3 is maintained at disconnection
Position (not shown).Thus, can not after the first use of overvoltage protection switch 100 (the first contact 21 and the second contact 41 disconnect)
Self-resetting, i.e. the first contact 21 and the second contact 41 will not contact again turns on heater circuit, so as to improve pressure means
Such as the security that electric pressure cooking saucepan uses.
According to the overvoltage protection switch 100 of the utility model embodiment, simple in construction, cost is low.Work as overvoltage protection switch
100 when being used for pressure means such as electric pressure cooking saucepan, by the way that second switch terminal 4 to be located to the first end of touch part 3, works as pressure device
When pressure of the tool for example in electric pressure cooking saucepan reaches predetermined pressure, seal 5 can drive touch part 3 to make second switch terminal 4
Second contact 41 separates in time with the first contact 21 of first switch terminal 2, can so make pressure means such as electric pressure cooking saucepan
The heater circuit with first switch terminal 2 and second switch terminal 4 disconnect rapidly, so as to ensure that it is abnormal it is over-pressed under break
The reliability of electric protection, the safety in utilization of pressure means such as electric pressure cooking saucepan is further increased, moreover, working as touch part 3
Touch part 3 can be maintained at open position by locking system 6 when open position, and now the second contact 41 is begun with the first contact 21
Not contact condition is kept eventually, is not in the situation that heater continues heating, is further added pressure means for example
The safety in utilization of electric pressure cooking saucepan.In addition, by setting Switch main body 1, can be by first switch terminal 2, touch part 3, second
Switch terminal 4, seal 5 and locking system 6 are integrated in Switch main body 1 so that overvoltage protection switch 100 is an entirety
Part, in use, can facilitate and overvoltage protection switch 100 quickly is attached into pressure means such as electric pressure cooking saucepan, improve
Efficiency of assembling.Moreover, by setting seal 5, the reliability of the action of overvoltage protection switch 100 can be effectively ensured.
According to some embodiments of the utility model, formed with neck, second switch in the side wall of the first end of touch part 3
Terminal 4 is fastened on neck.For example, as depicted in figs. 1 and 2, neck can be by a part for the side wall of the first end of touch part 3
Inwardly concave to be formed, the part of one end of second switch terminal 4 is caught in neck, and the side wall of neck is to second switch terminal 4
Have the function that spacing, second switch terminal 4 is synchronized with the movement with touch part 3, now second switch terminal 4 is relative
In touch part 3 be fixed.Thus, by setting neck, second switch terminal 4 is easily installed in touch part 3
On, improve the efficiency of assembling of second switch terminal 4.Here, it is necessary to which explanation, direction " interior " can be understood as towards shake-up
The direction of the central axis of part 3.Certainly, second switch terminal 4 can also use other modes to be arranged on touch part 3, example
Such as, second switch terminal 4 can directly be fixedly connected with (for example, bonding etc.) at the second end of touch part 3, as long as second can be realized
Switch terminal 4 moves with touch part 3.
Alternatively, as depicted in figs. 1 and 2, touch part 3 is touch pole, and touch part 3 can be arranged with connected entrance about 11,
Touch part 3 is coaxially disposed with connected entrance 11, and now the central axis of touch part 3 overlaps with the central axis of connected entrance 11.Thus,
Simultaneously central axis of active force of the indirectly-acting on touch part 3 approximately along touch part 3 of seal 5 is acted on by connected entrance 11
Direction, so as to which the stationarity of the motion of touch part 3 is effectively ensured, and then further ensure the reliability of power-off protection.
According to some alternative embodiments of the present utility model, formed with locking hole 31 on touch part 3, for example, such as Fig. 1 and figure
Shown in 2, locking hole 31 is formed on the periphery wall of touch part 3, and locking hole 31 can be formed as the circumferential annular along touch part 3
The annular groove of extension, but not limited to this.Formed with the holding tank 121 opened wide towards touch part 3, locking system 6 on Switch main body 1
It is movably arranged in holding tank 121, when touch part 3 is located at open position, locking system 6 stretches out holding tank 121 and locking hole
31 coordinate so that touch part 3 is maintained at open position.Thus, can be well by the cooperation of locking system 6 and locking hole 31
Touch part 3 is maintained at open position (position i.e. as shown in Figure 2), now the second contact 41 and the first contact 21 are maintained at point
From state, without because pressure oscillation of the pressure means for example in electric pressure cooking saucepan make the second contact 41 again with the first contact 21
Contact.
Specifically, referring to Figures 1 and 2, locking system 6 includes：Lock piece 61 and elastic component 62, lock piece 61 and elasticity
Part 62 is each provided in holding tank 121, elastic component 62 be located at holding tank 121 inwall (for example, left side wall in Fig. 1 and Fig. 2) and
Between lock piece 61, elastic component 6242 is configured to often promote lock piece 61 towards the direction of the central axis of touch part 3.Work as touch part
3 when being located at contact position, as shown in figure 1, lock piece 61 keeps stopping in the presence of elastic component 62 with the periphery wall of touch part 3
Support, now locking hole 31 is located at the lower section of locking system 6, and during touch part 3 moves up, locking hole 31 is relative to lock
Locking apparatus 6 moves up, when touch part 3 is moved to holding tank 121 and locking hole 31 substantially left and right is alignd when, lock piece 61 will be
Stretched into the presence of elastic component 62 in locking hole 31, now the second contact 41 disconnects with the first contact 21, so that pressure device
The heater circuit for having such as electric pressure cooking saucepan disconnects, and the pressure in electric pressure cooking saucepan will not continue to act on touch part 3, i.e. touch part
3 will not continue to move up, and because the cooperation of lock piece 61 and locking hole 31, touch part 3 may remain in the position, make the
Two contacts 41 are off all the time with the first contact 21, thus, effectively increase pressure protection, add pressure means example
Such as the security of electric pressure cooking saucepan.Alternatively, elastic component 62 is spring, but not limited to this.Further, deviating from for lock piece 61 touches
One end of the central axis of moving part 3 could be formed with guide groove, and one end of elastic component 62 is adapted to extend into the guide groove and is fixed on
On the inwall of guide groove, motion of the guide groove to elastic component 62 has guide effect, so as to be further ensured that locking system 6
The reliability of action, while the setting of guide groove can also reduce the space-consuming of whole locking system 6.
Further, it is provided with fixed seat 12 in Switch main body 1, formed with pilot hole 122 in fixed seat 12, touch part 3 can
Movably it is located at pilot hole 122.Such as in the example of fig. 1 and 2, pilot hole 122 runs through fixed seat along the vertical direction
12, touch part 3 can be located at pilot hole 122 up or down.Pilot hole 122 has guide effect to touch part 3, to ensure
The accuracy that touch part 3 moves.Alternatively, the bearing of trend of touch part 3 is vertical with the plane where second switch terminal 4, such as
Shown in Fig. 1, thus, it is possible to preferably drive second switch terminal 4 the second contact 41 is separated with the first contact 21.Now it is used for
Accommodating the holding tank 121 of locking system 6 can be arranged in the side wall of pilot hole 122.
Alternatively, as depicted in figs. 1 and 2, the bearing of trend of holding tank 121 is vertical with the bearing of trend of pilot hole 122, with
Lock piece 61 is set preferably to coordinate with locking hole 31.
Certainly, Switch main body 1 is additionally formed according to other alternative embodiments of the present utility model, locking hole 31
On, correspondingly, locking system 6 is located on touch part 3, and locking system 6 is suitable to coordinate with locking hole 31 to make to touch with locking touch part 3
Moving part 3 is maintained at the open position that the second contact 41 separates with the first contact 21.Thus, when touch part 3 acts, locking system
6 can coordinate with locking hole 31, so as to which touch device is locked at into the position that the second contact 41 and the first contact 21 disconnect.Example
Such as, can not Self-resetting, i.e. the first contact after the first use of overvoltage protection switch 100 (the first contact 21 and the second contact 41 disconnect)
21 and second contact 41 will not again contact and turn on heater circuit, use so as to adding pressure means such as electric pressure cooking saucepan
Security.For example, could be formed with the holding tank 121 opened wide towards locking hole 31 on touch part 3, locking system 6 is movably
Be located in holding tank 121, when touch part 3 is located at open position locking system 6 stretch out holding tank 121 and locking hole 31 coordinate with
Touch part 3 is set to be maintained at open position.Thus, can be well by touch part by the cooperation of locking system 6 and locking hole 31
3 are maintained at open position, and now the second contact 41 and the first contact 21 are maintained at released state, without because pressure means example
As the pressure oscillation in electric pressure cooking saucepan makes the second contact 41 be contacted again with the first contact 21.
Specifically, the locking system 6 can equally include：Lock piece 61 and elastic component 62, lock piece 61 and elastic component 62
It is each provided in holding tank 121, elastic component 62 is located between the inwall of holding tank 121 and lock piece 61, and elastic component 62 is configured to court
Lock piece 61 is often promoted to the direction away from touch pole central axis.When touch part 3 is located at contact position, lock piece 61 is in bullet
Property part 62 in the presence of with Switch main body 1 keep only support, now lock groove is located at the top of locking system 6, upward in touch part 3
In mobile process, locking system 6 moves up relative to lock groove, and when touch part 3, to be moved to holding tank 121 big with lock groove
When causing left and right alignment, lock piece 61 will be stretched into lock groove in the presence of elastic component 62, and now the second contact 41 and first is touched
Point 21 disconnects, so that the heater circuit of pressure means such as electric pressure cooking saucepan disconnects, the pressure in electric pressure cooking saucepan will not continue to
Acting on touch part 3, i.e., touch part 3 will not continue to move up, and due to the cooperation of lock piece 61 and lock groove, touch part
3 may remain in the position, the second contact 41 is off all the time with the first contact 21, thus, effectively increase pressure
Try hard to keep shield, add the security of pressure means such as electric pressure cooking saucepan.Alternatively, now elastic component 62 equally can be spring,
But not limited to this.Further, one end of the central axis of neighbouring touch part 3 of lock piece 61 is formed with guide groove, elastic component 62
One end be adapted to extend into the guide groove and be fixed on the inwall of guide groove, motion of the guide groove to elastic component 62, which has, to be oriented to
Effect, so as to be further ensured that the reliability of the action of locking system 6, while the setting of guide groove can also reduce whole lock
The space-consuming of locking apparatus 6.
As depicted in figs. 1 and 2, the periphery wall at the second end of touch part 3 is provided with the backstop muscle 32 to stretch out, and overvoltage is protected
Shield switch 100 further comprises：Dynamic clamping head and quiet clamping head 7, dynamic clamping head and quiet clamping head 7 are only against between fixed seat 12 and backstop muscle 32, elasticity
Return unit 7 is configured to often promote touch part 3 towards the direction of connected entrance 11.Specifically, for example, pilot hole 122 can include edge
The first hole and the second hole that above-below direction is sequentially connected, the cross-sectional area in the second hole are more than the cross-sectional area in the first hole, the second hole
Junction with the first hole is stage portion, and dynamic clamping head and quiet clamping head 7 can be spring, and spring is set in outside touch pole, and the two of spring
End is only supported with the stage portion and backstop muscle 32 of pilot hole 122 respectively, often to promote touch part 3 downwards, i.e., when pressure means for example
When pressure in electric pressure cooking saucepan is less than predetermined pressure, seal 5 can be by touch part 3 in such as spring of dynamic clamping head and quiet clamping head 7
The lower closure connected entrance 11 of effect.
Wherein, first switch terminal 2 can be located in fixed seat 12.Certainly, first switch terminal 2 can also be fixed directly
On the inwall of Switch main body 1 (not shown).It is understood that the specific set location of first switch terminal 2 can root
Specifically set according to actual requirement, preferably to meet actual requirement.
For example, as depicted in figs. 1 and 2, it is suitable to fix formed with mounting groove, above-mentioned second end of touch part 3 on seal 5
In mounting groove.The environmental pressure that seal 5 is configured to apply by connected entrance 11 is (for example, pressure means such as electric pressure cooking saucepan
Internal pressure) when reaching predetermined pressure, seal 5 pass through the second contact 41 and first that touch part 3 drives second switch terminal 4
First contact 21 of switch terminal 2 separates.Seal 5 is used to separate the inside of Switch main body 1 and connected entrance 11, for example, with pressure
Power utensil such as electric pressure cooking saucepan internal insulation is opened, so that between the inside of Switch main body 1 and pressure means such as electric pressure cooking saucepan inside
With pressure difference, so as to which when pressure means such as electric pressure cooking saucepan internal abnormality overvoltage, seal 5 can be in the effect of both sides pressure difference
Lower drive touch part 3 moves up.
Alternatively, seal 5 is diaphragm seal, and when touch part 3 is located at contact position, seal 5 bloats to connected entrance 11
To block connected entrance 11, for example, as shown in figure 1, the edge of diaphragm seal and for block the bottom of connected entrance 11 play two layers it is close
The effect of envelope, it is effectively guaranteed the reliability of the action of touch part 3.When touch part 3 is located at open position, the direction of seal 5
Direction away from connected entrance 11 bloats, as shown in Figure 2.Now seal 5 can be made of flexible material, Ke Yijin
One step improves the sealing effectiveness of seal 5.
According to the overvoltage protection switch 100 of the utility model embodiment, it is possible to achieve when pressure means such as electric pressure cooking saucepan
When interior pressure is between 140kPa-200kPa, deenergization, overvoltage protection is realized.The principle of this kind of overvoltage protection switch 100
Be steam of the pressure means for example in electric pressure cooking saucepan by the access switch body 1 of connected entrance 11 inside, when steam pressure is more than bullet
Property such as spring of return unit 7 elastic force when, seal 5 is opened on steam top, drives touch part 3 to move up, and the upper end of touch part 3 is set
Second switch terminal 4 is put, drives second switch terminal 4 to move upwards in 3 upward motion process of touch part, makes the He of the first contact 21
Second contact 41 separates.After touch part 3 moves upwards, when touch part 3 is risen in locking hole 31 and fixed seat 12 thereon
Holding tank 121 substantially face when, lock piece 61 is driven by elastic component 62 and will be caught in locking hole 31, to block touch part 3, touch
Part 3 can not reset.Because touch part 3 is unable to return, the second switch terminal 4 set on touch part 3 can not return back to second and touch
The contact position that point 41 contacts with the first contact 21, i.e. touch part 3 is maintained at open position, thus, in overvoltage protection switch 100
Second contact 41 and the separation of the first contact 21 are powered off and can not resetted, and whole overvoltage protection switch 100 powers off, and pressure means are for example
Pressure in electric pressure cooking saucepan will not continue to rise, thus, it is possible to pressure release or pressure means caused by effectively preventing hypertonia
Such as the pot explosion of electric pressure cooking saucepan, pressure protection can be effectively increased, adds the security of pressure means such as electric pressure cooking saucepan.
According to the pressure means of the utility model second aspect embodiment, including according to the above-mentioned first aspect of the utility model
The overvoltage protection switch 100 of 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, the band of touch part 3 when the pressure in apparatus body reaches predetermined pressure
Dynamic second switch terminal 4 moves upwards, while locking system 6 can be by the locking of touch part 3 so that touch part 3 is maintained at second touches
The open position that point 41 separates with the first contact 21.For example, specifically, apparatus body can include pot and lid, pot
Top open wide, cover cap is located at the top of pot, wherein, overvoltage protection switch 100 can be located on lid, and is located at lid
Center.Alternatively, overvoltage protection switch 100 is vertically arranged, and now connected entrance 11 can directly communicate with pot nside, pot
Interior pressure can act directly on the bottom of touch device by connected entrance 11.Seal 5 is provided between pot and lid, with
Ensure the sealing between pot and lid.
According to the pressure means of the utility model embodiment such as electric pressure cooking saucepan, pressure anomaly power-off can be effectively provided and protected
Shield, and reduce cost.
According to other compositions of the pressure means of the utility model embodiment such as electric pressure cooking saucepan and operate for ability
All it is known for the those of ordinary skill of domain, 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 specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present utility model.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure, material or
Person's feature can combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle and objective of the present utility model, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
- A kind of 1. overvoltage protection switch, it is characterised in that including：Switch main body, formed with the connected entrance communicated with external environment condition on the Switch main body；First switch terminal, the first switch terminal are located in the Switch main body, and the first switch terminal has first Contact；Touch part, the touch part is movingly located in the Switch main body between contact position and open position, described The first end of touch part is provided with second switch terminal, and the second switch terminal has the second contact, when the touch part is located at Second contact described in during the contact position and first contact, when the touch part is located at open position when institute The second contact and first contact separation are stated, the second end of the touch part is provided with seal, and the seal is configured to lead to Cross the environmental pressure that the connected entrance applies and reach seal during predetermined pressure and drive the touch part from the contact position Put and move to the open position；Locking system, the locking system are located in one of them in the Switch main body and the touch part, are touched when described Another cooperation when moving part is located at the open position in the locking system and the Switch main body and the touch part with The touch part is set to be maintained at the open position.
- 2. overvoltage protection switch according to claim 1, it is characterised in that the side wall of the first end of the touch part On be fastened on formed with neck, the second switch terminal on the neck.
- 3. overvoltage protection switch according to claim 1, it is characterised in that the touch part is touch pole, the shake-up Part is coaxially disposed with the connected entrance.
- 4. according to the overvoltage protection switch any one of claim 1-3, it is characterised in that on the touch part formed with Locking hole,On the Switch main body institute is movably arranged at formed with the holding tank opened wide towards the touch part, the locking system State in holding tank, when the touch part is located at the open position, the locking system stretches out the holding tank and the locking Hole coordinates so that the touch part is maintained at the open position.
- 5. overvoltage protection switch according to claim 4, it is characterised in that the locking system includes：Lock piece, the lock piece are located in the holding tank；WithElastic component, the elastic component are located between the inwall of the holding tank and the lock piece, and the elastic component is configured to court The lock piece is often promoted to the direction of the touch part central axis.
- 6. overvoltage protection switch according to claim 1, it is characterised in that be provided with fixed seat, institute in the Switch main body State and be movably located at the pilot hole formed with pilot hole, the touch part in fixed seat.
- 7. overvoltage protection switch according to claim 6, it is characterised in that the periphery at second end of the touch part Wall 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 fixed seat and the backstop muscle, the dynamic clamping head and quiet clamping head It is configured to often promote the touch part towards the direction of the connected entrance.
- 8. overvoltage protection switch according to claim 1, it is characterised in that the seal is diaphragm seal, is touched when described The seal is bloated to block the connected entrance to the connected entrance when moving part is located at the contact position, when the touch part The seal is directed away from the direction bulging of the connected entrance during positioned at the open position.
- 9. overvoltage protection switch according to claim 1, it is characterised in that the predetermined pressure is P, and the P meets： 140kPa≤P≤200kPa。
- 10. a kind of pressure means, it is characterised in that including the overvoltage protection switch according to any one of claim 1-9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100776783 | 2017-02-14 | ||
| CN201710077678 | 2017-02-14 |
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| Publication Number | Publication Date |
|---|---|
| CN206950042U true CN206950042U (en) | 2018-02-02 |
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ID=61377086
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720154195.4U Active CN206950042U (en) | 2017-02-14 | 2017-02-20 | Overvoltage protection switch and there are its pressure means |
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| CN (1) | CN206950042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547673A (en) * | 2018-06-01 | 2019-12-10 | 佛山市顺德区美的电热电器制造有限公司 | Power switch assembly, cover body assembly and cooking utensil |
-
2017
- 2017-02-20 CN CN201720154195.4U patent/CN206950042U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547673A (en) * | 2018-06-01 | 2019-12-10 | 佛山市顺德区美的电热电器制造有限公司 | Power switch assembly, cover body assembly and cooking utensil |
| CN110547673B (en) * | 2018-06-01 | 2022-01-14 | 佛山市顺德区美的电热电器制造有限公司 | Power switch assembly, cover body assembly and cooking utensil |
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