CN206102397U - Overvoltage protection switch and pressure gauge utensil that has it - Google Patents
Overvoltage protection switch and pressure gauge utensil that has it Download PDFInfo
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- CN206102397U CN206102397U CN201620795634.5U CN201620795634U CN206102397U CN 206102397 U CN206102397 U CN 206102397U CN 201620795634 U CN201620795634 U CN 201620795634U CN 206102397 U CN206102397 U CN 206102397U
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Abstract
The utility model discloses an overvoltage protection switch and pressure gauge utensil, the overvoltage protection switch includes: first switch terminal, second switch terminal, trigger hold spare, touch device, switch body and sealing device, first switch terminal has first contact, the second switch terminal has the second contact, trigger hold spare includes trigger part and elasticity keeper, and trigger part links to each other with the lateral wall of the first end of the neighbouring second switch terminal of open -ended, and the elasticity keeper is connected between the second end of trigger part's free end and second switch terminal, sealing device construct the ambient pressure who applys through intercommunication mouth when reaching the predetermined pressure sealing device drive touch device and touch second end that direction that trigger part made elasticity keeper orientation keep away from the second contact often stimulateeed the second switch terminal so that move to open position and make the second contact keep at open position from the contact position in the second contact. According to the utility model discloses a power -off protection at unusual excessive rolling is realized to the overvoltage protection switch.
Description
Technical field
This utility model is related to household appliance technical field, more particularly, to a kind of overvoltage protection switch and the pressure device with it
Tool.
Background technology
In correlation technique, the normal pressure use range of electric pressure cooking saucepan is at 70kPa (kPa).Normally use in electric pressure cooking saucepan
During, generally adopt relief valve or make crack between the pot of electric pressure cooking saucepan and lid (now electric pressure cooking saucepan is pressed for elastic
Power pot) mode realizing normal pressure release.However, between pressure release defective valve or pot and lid can not normally crack discharging
During gas in electric pressure cooking saucepan, easily there is situation about popping in electric pressure cooking saucepan, so as to damage to user.
Utility model content
This utility model is intended at least solve one of technical problem present in prior art.For this purpose, of the present utility model
One purpose is to propose a kind of overvoltage protection switch, the simple structure of the overvoltage protection switch.
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 this utility model first aspect, including：First switch terminal, the first switch end
Son has the first contact；Second switch terminal, the first end of the second switch terminal is fixing end, the second switch terminal
The second end be movable end, second end of the second switch terminal has the second contact, second contact with it is described
First contact often contacts, the opening with insertion between the first end of the second switch terminal and the second end；Triggering keeper,
The triggering keeper is located on the second switch terminal, and the triggering keeper includes trigger member and elastic keeper, institute
State trigger member to be connected with the side wall of the first end of the neighbouring described second switch terminal of the opening, elastic keeper's connection
Between the free end of the trigger member and the second end of the second switch terminal；Touch device, the touch device and institute
State second switch terminal to be disposed adjacent；Switch main body, is formed with the connected entrance communicated with external environment condition on the Switch main body, its
Described in first switch terminal, the second switch terminal, the triggering keeper and the touch device be each provided at described opening
Close this in vivo；Sealing device, the sealing device is located in the Switch main body, the sealing device and the touch device phase
Even, the ambient pressure that the sealing device is configured to apply by the connected entrance reaches sealing device band during predetermined pressure
The dynamic touch device touches the trigger member makes the direction that the elastic keeper is directed away from second contact often pull
Second end of the second switch terminal is so that second contact is from the contact position motion often contacted with first contact
To with the open position of first contact separation and making second contact be maintained at the open position.
According to overvoltage protection switch of the present utility model, simple structure, low cost.When overvoltage protection switch is used for pressure device
During tool such as electric pressure cooking saucepan, by arranging touch device and triggering keeper, when the pressure in pressure means reaches predetermined pressure
When, the first contact and the second contact disconnect, can make the with first switch terminal and second switch terminal of pressure means plus
Heater circuit disconnects, such that it is able to effectively realize the power-off protection in the case where exception is over-pressed, and, when the second contact is located at open position
When the second contact can be maintained at open position, be not in heater continue heat situation, increased pressure means
Safety in utilization.In addition, by arranging Switch main body, first switch terminal, second switch terminal, triggering can be kept
Part, touch device and sealing device are integrated in Switch main body so that overvoltage protection switch is a global facility, when using,
Conveniently and quickly overvoltage protection switch can be attached to into pressure means, improve efficiency of assembling.By arranging sealing device,
The reliability of overvoltage protection switch action can be effectively ensured.
According to some embodiments of the present utility model, the trigger member is shell fragment, when second contact is located at described connecing
The trigger member and the elastic keeper are located at the one of the neighbouring described touch device of the second switch terminal during tactile position
Side, when second contact is located at the open position, the trigger member and the elastic keeper are located at the second switch
The side away from the touch device of terminal.
Alternatively, the shell fragment is formed as planar structure.
Alternatively, the elastic keeper is compression spring.
According to some embodiments of the present utility model, the touch device includes：Touch fixed seat, the shake-up fixed seat
On be formed with pilot hole, wherein the first switch terminal and the second switch terminal be fixed on it is described shake-up fixed seat on；
Touch pole, the touch pole is located in the pilot hole, and the first end of the touch pole is suitable to stretch out the pilot hole shake-up institute
Triggering keeper is stated, the second end of the touch pole is connected with the sealing device；And dynamic clamping head and quiet clamping head, the elastic reset
Part is located in the pilot hole, and the dynamic clamping head and quiet clamping head is configured to be directed away from the direction of the second switch terminal and often promotes institute
State touch pole.
Alternatively, the sealing device be diaphragm seal, when second contact be located at the contact position when sealing
Device is bloated to block the connected entrance to the connected entrance, the sealing when second contact is located at the open position
Device is directed away from the direction of the connected entrance and bloats.
Alternatively, the predetermined pressure is P, and the P meets：140kPa≤P≤200kPa.
Alternatively, the pressure lifting surface area that the ambient pressure acts on the sealing device is S, wherein the S is full
Foot：1mm2≤S≤100mm2。
According to the pressure means of this utility model second aspect, including：Apparatus body；With according to this utility model above-mentioned
The overvoltage protection switch of one side, the overvoltage protection switch is located on the apparatus body, wherein the ambient pressure is institute
The pressure in apparatus body is stated, the touch device is transported upwards when the pressure in the apparatus body reaches the predetermined pressure
It is dynamic to touch the triggering keeper.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly will be from explained below
In become obvious, or by it is of the present utility model practice recognize.
Description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from the description with reference to accompanying drawings below to embodiment
Become obvious and easy to understand, wherein：
Fig. 1 is the profile of the overvoltage protection switch according to this utility model embodiment, wherein the second contact is in contact
Position；
Fig. 2 is another profile of the overvoltage protection switch according to this utility model embodiment, wherein at the second contact
In open position；
Fig. 3 is the axonometric chart of the overvoltage protection switch according to this utility model embodiment, wherein the second contact is in contact
Position；
Fig. 4 is the schematic diagram of the first switch terminal shown in Fig. 3 and second switch terminal；
Fig. 5 is the profile of the pressure means according to this utility model embodiment.
Reference：
100：Overvoltage protection switch；
1：First switch terminal；11：First contact；
2：Second switch terminal；21：Second contact；22：Opening；
3：Triggering keeper；31：Trigger member；32：Elastic keeper；
41：Touch fixed seat；411：Pilot hole；42：Touch pole；43：Dynamic clamping head and quiet clamping head；
5：Switch main body；51：Connected entrance；6：Sealing device；7：Wire；
200：Pressure means；
201：Pot；202：Lid；203：Sealing member.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element is represented to same or similar label eventually or the element with same or like function.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, is only used for explaining this utility model, and it is not intended that to of the present utility model
Limit.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ",
The orientation or position relationship of the instruction such as " axial direction ", " radial direction ", " circumference " is, based on orientation shown in the drawings or position relationship, to be only
For the ease of describe this utility model and simplify description, rather than indicate or imply indication device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, unless otherwise stated, the implication of " multiple "
It is two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to 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 this utility model.
The overvoltage protection switch 100 according to this utility model embodiment is described below with reference to Fig. 1-Fig. 5.Overvoltage protection switch
Especially rigid pressure pot (exists the 100 such as electric pressure cooking saucepans of pressure means 200 that can be used for needing carrying out pressure cut-off protection
In electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position) on.When pressure means 200 it is for example electric
The normal pressure relief device of pressure cooker such as pressure release defective valve appearance exception is over-pressed, and (pressure i.e. in pressure means 200 is normal more than its
Pressure use range such as 70kPa) when, overvoltage protection switch 100 can make the heater power-off in pressure means 200
Heater stop is heated, and prevents the pressure in pressure means 200 from further raising.In the application explained below, with mistake
Pressure protection switch 100 is used to be illustrated as a example by electric pressure cooking saucepan.Certainly, it will be understood to those skilled in the art that overvoltage is protected
It is first-class that shield switch 100 can be also used for such as electric pressure pot of other pressure means 200.
As depicted in figs. 1 and 2, according to the overvoltage protection switch 100 of this utility model first aspect embodiment, including first
Switch terminal 1, second switch terminal 2, triggering keeper 3, touch device, Switch main body 5 and sealing device 6.
First switch terminal 1 has the first contact 11, and second switch terminal 2 has the second contact 21, the second contact 21 with
The first often contact of contact 11.For example, as depicted in figs. 1 and 2, the first contact 11 is located at the free end (example of first switch terminal 1
Such as, the upper end in Fig. 1 and Fig. 2), the first contact 11 protrudes to be formed from a side surface of first switch terminal 1, similarly, second
Contact 21 is located at the free end of second switch terminal 2 (for example, the right-hand member in Fig. 1 and Fig. 2), and the second contact 21 is from second switch end
One side surface of son 2 protrudes to be formed.
First switch terminal 1 and second switch terminal 2 are suitable to (for example, by way of wire 7) and are connected to pressure means
In the heater circuit (not shown) of 200 such as electric pressure cooking saucepans, the heater circuit includes heater.When pressure means 200
For example when electric pressure cooking saucepan is normally used, the first contact 11 remains and contacts that heater circuit is often turned on the second contact 21, heating
Device works, to heat to food in pressure means 200 etc..
Alternatively, the outer surface of the first contact 11 and the second contact 21 can be collectively formed respectively by cambered surface and plane, should
Plane is located at the top of the first contact 11 and the second contact 21, thus, due to connecing between the first contact 11 and the second contact 21
Touch and contacted for face, contact area is big so that the first contact 11 is contacted well, so as to ensure that heater circuit with the second contact 21
Reliability.Certainly, the sphere that the outer surface of the first contact 11 and the second contact 21 can also be formed as outwardly is (not shown
Go out).
As depicted in figs. 1 and 2, the first end (for example, the left end in Fig. 1 and Fig. 2) of second switch terminal 2 is fixing end,
Now the first end of second switch terminal 2 is fixed, and the first end of second switch terminal 2 is relative to overvoltage protection switch
100 without relative motioies, and second end (for example, the right-hand member in Fig. 1 and Fig. 2) of second switch terminal 2 is movable end, second switch
Second end of terminal 2 can be motion.Wherein, the second contact 21 is located at above-mentioned second end of second switch terminal 2, thus,
Second end of second switch terminal 2 can drive the second contact 21 to move, so that the second contact 21 contacts with the first contact 11, or
Separate with the first contact 11.Have between the above-mentioned first end of second switch terminal 2 and above-mentioned second end of second switch terminal 2
The opening 22 of insertion.For example, as shown in Figure 3 and Figure 4, opening 22 runs through second switch along the thickness direction of second switch terminal 2
Terminal 2.It is understood that concrete size and dimension of opening 22 etc. can specifically be arranged according to actual requirement, with more preferable
Ground meets actual requirement.
Touch device is disposed adjacent with second switch terminal 2.For example, as depicted in figs. 1 and 2, touch device is located at second
The side (for example, the downside in Fig. 1 and Fig. 2) away from first switch terminal 1 of switch terminal 2.Touch device is in normal conditions
Do not contact with triggering keeper 3 under (for example when, the second contact 21 is located at contact position).Touch device is configured to work as ambient pressure
When reaching predetermined pressure, touch triggering keeper 3 and make the second contact 21 from the contact position often contact with the first contact 11 (such as figure
Shown in 1) move to and the detached open position (as shown in Figure 2) in the first contact 11.It should be noted that working as overvoltage protection switch
100 be used for such as electric pressure cooking saucepan of pressure means 200 on when, " ambient pressure " can be understood as such as Voltage force of pressure means 200
Pressure in pot.
For example, when the pressure in such as electric pressure cooking saucepan of pressure means 200 reaches predetermined pressure, touch device is protected with triggering
Gripping member 3 is contacted and touching triggering keeper 3 makes the second contact 21 separate (do not contact) with the first contact 11, so that plus thermoelectricity
Road disconnects, and heater does not work, and the pressure in such as electric pressure cooking saucepan of pressure means 200 can be gradually lowered, and realizes to pressure
The protection of such as electric pressure cooking saucepan of power utensil 200, and because such as electric pressure cooking saucepan of pressure means 200 does not discharge the gas of High Temperature High Pressure
Body, so as to damage to user.Touch device can not connect after triggering keeper 3 is touched with triggering keeper 3
Touch.
As Figure 1-Figure 4, triggering keeper 3 includes trigger member 31 and elastic keeper 32, trigger member 31 and opening 22
Neighbouring second switch terminal 2 first end side wall (for example, the left side wall in Fig. 1-Fig. 4) be connected, the side wall is preferably formed as
For linear, to ensure the reliability that trigger member 31 is connected with the side wall.Remaining of the remainder of trigger member 31 and opening 22
Side wall is spaced apart from each other, and now trigger member 31 is equivalent to cantilever beam, free end (for example, the right side in Fig. 1-Fig. 4 of trigger member 31
End) it is swingable relative to relative with the free end other end (for example, the left end in Fig. 1-Fig. 4) of trigger member 31.
(for example, open at second end of above-mentioned free end and second switch terminal 2 that elastic keeper 32 is connected to trigger member 31
The side wall at the second end of the neighbouring second switch terminal 2 of mouth 22) between, the pressure in such as electric pressure cooking saucepan of pressure means 200
When reaching predetermined pressure, touch device touches trigger member 31 makes the direction that elastic keeper 32 is directed away from the second contact 21 often draw
Second end of dynamic second switch terminal 2 is so that the second contact 21 moves to and the from the contact position often contacted with the first contact 11
The detached open position in one contact 11 is simultaneously maintained at open position in the second contact 21, as shown in Figure 2.Alternatively, elastic keeper
32 is compression spring, and for example, as Figure 1-Figure 4, elastic keeper 32 can, intermediate cross-section less for two ends cross-sectional area
The larger Reducing screw spring of product.But not limited to this.
Thus, as shown in figure 1, when the second contact 21 is located at contact position, trigger member 31 and compression spring are respectively positioned on the
The downside of two switch terminals 2, because compression spring is in normal compressive state, the outside at above-mentioned second end of second switch terminal 2
Edge by under the pulling force effect of compression spring often upwards so that the first contact 11 and the good contact of the second contact 21；When second
When contact 21 is located at open position, the position of trigger member 31 and compression spring shown in Fig. 1 moves up to second switch end
The upside of son 2, because compression spring is in normal compressive state, the outward flange at above-mentioned second end of second switch terminal 2 will be in pressure
Under the pulling force effect of contracting spring often downwards, so that the second contact 21 often separates with the first contact 11, the second contact 21 and first
Contact 11 will not contact again.
Alternatively, predetermined pressure is P, and P meets：140kPa≤P≤200kPa.Its concrete numerical value can be according to actual pressure
The type of such as electric pressure cooking saucepan of utensil 200 and specifically arrange, preferably to meet actual requirement.
Wherein, trigger keeper 3 to be located on second switch terminal 2, the triggering when the second contact 21 is located at open position is protected
Gripping member 3 makes the second contact 21 be maintained at open position.For example, the first use of overvoltage protection switch 100 (the first contact 11 and second
Contact 21 disconnects) after cannot Self-resetting, i.e. the first contact 11 and the second contact 21 will not again contact and turn on heater circuit, from
And increased the safety that such as electric pressure cooking saucepan of pressure means 200 is used.
The connected entrance 51 communicated with external environment condition is formed with Switch main body 5, for example, as depicted in figs. 1 and 2, connected entrance
51 bottoms that can be formed in Switch main body 5.When overvoltage protection switch 100 is used for 200 such as electric pressure cooking saucepan of pressure means,
" external environment condition " is referred to inside such as electric pressure cooking saucepan of pressure means 200.Wherein first switch terminal 1, second switch terminal 2,
Triggering keeper 3 and touch device are each provided in Switch main body 5.Thus, by arrange can accommodate first switch terminal 1, the
The Switch main body 5 of two switch terminals 2, triggering keeper 3 and touch device, improves the integration of overvoltage protection switch 100.
Sealing device 6 is located in Switch main body 5, and sealing device 6 is connected with touch device, and sealing device 6 is configured to pass through
The ambient pressure that connected entrance 51 applies is when reaching predetermined pressure, sealing device 6 drives touch device to touch trigger member 31 makes elasticity
Keeper 3 be directed away from the direction of the second contact 21 often pull second switch terminal 2 the second end so that the second contact 21 from
The contact position of the first often contact of contact 11 is moved to the detached open position in the first contact 11 and keeps the second contact 21
In open position.Thus, by arranging sealing device 6, sealing device 6 can be by the inside of Switch main body 5 and pressure means 200
As electric pressure cooking saucepan internal insulation is opened, make the inside of Switch main body 5 and pressure means 200 that there is pressure for example between electric pressure cooking saucepan inside
Difference, so as to when such as electric pressure cooking saucepan internal abnormality of pressure means 200 is over-pressed, sealing device 6 can be pushed away in the presence of pressure reduction
Dynamic touch device is touching trigger member 31.
According to the overvoltage protection switch 100 of this utility model embodiment, simple structure, low cost.Work as overvoltage protection switch
100 be used for such as electric pressure cooking saucepan of pressure means 200 when, by arrange touch device and triggering keeper 3, when pressure means 200
When such as pressure in electric pressure cooking saucepan reaches predetermined pressure, the first contact 11 and the second contact 21 disconnect, and can make pressure means
The heater circuit with first switch terminal 1 and second switch terminal 2 of 200 such as electric pressure cooking saucepans disconnects, such that it is able to effective
The power-off protection in the case where exception is over-pressed being realized, and, the second contact 21 can be protected when the second contact 21 is located at open position
Hold in open position, be not in the situation of heater continuation heating, increased making for such as electric pressure cooking saucepan of pressure means 200
Use safety.In addition, by arranging Switch main body 5, can be by first switch terminal 1, second switch terminal 2, triggering keeper
3rd, touch device and sealing device 6 are integrated in Switch main body 5 so that overvoltage protection switch 100 is a global facility, is used
When, conveniently and quickly overvoltage protection switch 100 can be attached to into such as electric pressure cooking saucepan of pressure means 200, improve assembling
Efficiency.By arranging sealing device 6, the reliability of the action of overvoltage protection switch 100 can be effectively ensured.
Further, reference picture 1- Fig. 4, trigger member 31 is shell fragment, the trigger member when the second contact 21 is located at contact position
31 and elastic keeper 32 be located at second switch terminal 2 neighbouring touch device side (for example, the downside in Fig. 1 and Fig. 2),
When the second contact 21 is located at open position, trigger member 31 and elastic keeper 32 are located at filling away from touching for second switch terminal 2
The side (for example, the upside in Fig. 1 and Fig. 2) put.Alternatively, shell fragment is formed as planar structure, thus, processes simple and cost
It is low, but not limited to this.
According to some embodiments of the present utility model, as depicted in figs. 1 and 2, touch device is located at second switch terminal 2
Away from the side (for example, the downside in Fig. 1 and Fig. 2) of first switch terminal 1, specifically, touch device includes：Touch and fix
Seat 41, touch pole 42 and dynamic clamping head and quiet clamping head 43, to touch and be formed with pilot hole 411, wherein first switch terminal 1 in fixed seat 41
It is fixed in shake-up fixed seat 41 with second switch terminal 2.Touch pole 42 is located in pilot hole 411, the first end of touch pole 42
(for example, the upper end in Fig. 1 and Fig. 2) is suitable to stretch out pilot hole 411 to touch triggering keeper 3, and pilot hole 411 is to touch pole 42
With guide effect, to ensure the accuracy that touch pole 42 is moved.Alternatively, the bearing of trend of touch pole 42 and second switch end
The plane that son 2 is located is vertical, the second contact 21 is separated with the first contact 11 thus, it is possible to preferably touch triggering keeper 3.
The lower end of touch pole 42 is provided with the backstop muscle for stretching out.
Dynamic clamping head and quiet clamping head 43 is located in pilot hole 411, and dynamic clamping head and quiet clamping head 43 is configured to be directed away from second switch terminal 2
Direction often promotes touch pole 42.For example, dynamic clamping head and quiet clamping head 43 can be spring, and spring is set in outside touch pole 42, and spring
Two ends are only supported respectively with the roof and backstop muscle of pilot hole 411, often to promote touch pole 42 downwards, i.e., when pressure means 200
When being less than predetermined pressure such as the pressure in electric pressure cooking saucepan, touch pole 42 can reset under the action of the spring.
Wherein, second end (for example, the lower end in Fig. 1 and Fig. 2) of touch pole 42 is connected with sealing device 6.For example, as schemed
Shown in 1 and Fig. 2, holding tank is formed with sealing device 6, above-mentioned second end of touch pole 42 is suitable to be fixed in holding tank.It is close
Seal apparatus 6 are configured to the ambient pressure (for example, such as electric pressure cooking saucepan internal pressure of pressure means 200) applied by connected entrance 51
Sealing device 6 drives the above-mentioned first end of touch pole 42 to stretch out the shake-up triggering keeper 3 of pilot hole 411 when reaching predetermined pressure.
Sealing device 6 is used to separate the inside of Switch main body 5 and connected entrance 51, for example, inside such as electric pressure cooking saucepan of pressure means 200
Keep apart, so that the inside of Switch main body 5 and pressure means 200 have pressure reduction for example between electric pressure cooking saucepan inside, so as to work as pressure
During such as electric pressure cooking saucepan internal abnormality overvoltage of utensil 200, sealing device 6 can promote touch pole 42 upwards in the presence of pressure reduction
It is mobile to trigger keeper 3 to touch.
Alternatively, sealing device 6 is diaphragm seal, and when the second contact 21 is located at contact position, sealing device 6 is to connected entrance
51 bloat to block connected entrance 51, for example, as shown in figure 1, the edge of diaphragm seal and the bottom for blocking connected entrance 51 are played
The effect of two-layer sealing, is effectively guaranteed the reliability of touch device action.It is close when the second contact 21 is located at open position
Seal apparatus 6 are directed away from the direction of connected entrance 51 and bloat (as shown in Figure 2).Now sealing device 6 can be resilient using tool
Material is made, and can further improve the sealing effectiveness of sealing device 6.
According to the overvoltage protection switch 100 of this utility model embodiment, it is possible to achieve when such as Voltage force of pressure means 200
When pressure in pot is between 140kPa-200kPa, deenergization realizes overvoltage protection.The original of this kind of overvoltage protection switch 100
Reason is that the steam in such as electric pressure cooking saucepan of pressure means 200 passes through the access switch body 5 of connected entrance 51, when steam pressure is more than bullet
Property such as spring of return unit 43 elastic force when, steam backs down sealing device 6, drives touch pole 42 to move, and touches triggering keeper
3, triggering the stress of keeper 3 after can flick upwards so that the second contact 21 of second switch terminal 2 with triggering keeper 3 to
Lower movement, separates the first contact 11 of inside of Switch main body 5 and the second contact 21, and, after trigger member 31 is touched, elasticity
Such as compression spring of keeper 32 holds second switch terminal 2, prevents the return of the second contact 21, can be effectively increased pressure protection,
Increase the safety of such as electric pressure cooking saucepan of pressure means 200, it is more safe and reliable compared with traditional mechanical pressure relief.
As shown in figure 5, according to such as electric pressure cooking saucepan of pressure means 200 of this utility model second aspect embodiment, including
Apparatus body and overvoltage protection switch 100.Wherein, overvoltage protection switch 100 is according to the above-mentioned first aspect reality of this utility model
Apply the overvoltage protection switch 100 of example.
Specifically, overvoltage protection switch 100 is located on apparatus body, and wherein ambient pressure is the pressure in apparatus body
Power, when the pressure in apparatus body reaches predetermined pressure, touch device moves upwards shake-up triggering keeper 3.For example, such as Fig. 5
Shown, apparatus body includes pot 201 and lid 202, and the top of pot 201 is opened wide, and the lid of lid 202 is located at the top of pot 201
Portion, wherein, overvoltage protection switch 100 is located on lid 202, and positioned at the central authorities of lid 202.Further, overvoltage protection is opened
Close 100 to be vertically arranged, now connected entrance 51 can directly be communicated with the inside of pot 201, and the pressure in pot 201 can be by connecting
Port 51 acts directly on the bottom of touch device.Sealing member 203 is provided between pot 201 and lid 202, to ensure pot
Sealing between 201 and lid 202.
When the pressure in apparatus body just reaches predetermined pressure, have：
F1=F2+G=P × S
Wherein, F1 is the pressure suffered by the bottom of sealing device 6；F2 is the elastic force of dynamic clamping head and quiet clamping head 43；G is push rod and bullet
The deadweight of the actuating mechanisms such as property return unit 43；P is the pressure in apparatus body, and the span of P is 120kPa-200kPa (bags
Include endpoint value)；S acts on pressure lifting surface area on sealing device 6 for ambient pressure (for example, as shown in figure 5, S is utensil sheet
Internal pressure acts on the pressure lifting surface area of the bottom of sealing device 6), it is the size of steam and forced contact point.
Thus, by the conversion of above value, it can be deduced that the stress of the dynamic clamping head and quiet clamping head 43 of control power-off pressure.
Specifically, in the case of the action of second switch terminal 2, bottom stress F1=P of sealing device 6 × S, meanwhile,
F1=F2+G.So as to pass through the conversion of above-mentioned formula, it can be deduced that the stress of the dynamic clamping head and quiet clamping head 43 of control power-off pressure.Example
Such as, when the span of S is in 1mm2-100mm2(including endpoint value), F1 spans in 0.1N-20N, for dynamic clamping head and quiet clamping head
Relatively good type selecting for 43 stress.
According to such as electric pressure cooking saucepan of pressure means 200 of this utility model embodiment, pressure anomaly can be effectively provided and broken
Electric protection, and reduce cost.
Other according to such as electric pressure cooking saucepan of pressure means 200 of this utility model embodiment are constituted and operated for this
All it is known for the those of ordinary skill of field, 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 are described
Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or
Person's feature can in an appropriate manner be combined 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：
In the case of without departing from principle of the present utility model and objective various changes, modification, replacement can be carried out to these embodiments
And modification, scope of the present utility model limits by claim and its equivalent.
Claims (9)
1. a kind of overvoltage protection switch, it is characterised in that include：
First switch terminal, the first switch terminal has the first contact；
Second switch terminal, the first end of the second switch terminal is fixing end, and the second end of the second switch terminal is
Movable end, second end of the second switch terminal has the second contact, and second contact is normal with first contact
Contact, the opening with insertion between the first end of the second switch terminal and the second end；
Triggering keeper, the triggering keeper is located on the second switch terminal, and the triggering keeper includes trigger member
And elastic keeper, the trigger member is connected with the side wall of the first end of the neighbouring described second switch terminal of the opening, institute
State elastic keeper to be connected between the second end of the free end of the trigger member and the second switch terminal；
Touch device, the touch device is disposed adjacent with the second switch terminal；
Switch main body, is formed with the connected entrance communicated with external environment condition on the Switch main body, wherein the first switch terminal,
The second switch terminal, the triggering keeper and the touch device are each provided in the Switch main body；
Sealing device, the sealing device is located in the Switch main body, and the sealing device is connected with the touch device, institute
State the ambient pressure that sealing device is configured to apply by the connected entrance and reach sealing device during predetermined pressure and drive institute
Stating the touch device shake-up trigger member makes the elastic keeper be directed away from described in the direction often pulling of second contact
Second end of second switch terminal so that second contact from the contact position often contacted with first contact move to
The open position of first contact separation simultaneously makes second contact be maintained at the open position.
2. overvoltage protection switch according to claim 1, it is characterised in that the trigger member is shell fragment, when described second
The trigger member and the elastic keeper are located at the neighbouring institute of the second switch terminal when contact is located at the contact position
The side of touch device is stated, the trigger member and the elastic keeper position when second contact is located at the open position
In the side away from the touch device of the second switch terminal.
3. overvoltage protection switch according to claim 2, it is characterised in that the shell fragment is formed as planar structure.
4. overvoltage protection switch according to claim 1, it is characterised in that the elastic keeper is compression spring.
5. the overvoltage protection switch according to any one of claim 1-4, it is characterised in that the touch device includes：
Fixed seat is touched, pilot hole is formed with the shake-up fixed seat, wherein the first switch terminal and described second is opened
Close terminal to be fixed in the shake-up fixed seat；
Touch pole, the touch pole is located in the pilot hole, and the first end of the touch pole is suitable to stretch out the pilot hole and touches
The triggering keeper is moved, the second end of the touch pole is connected with the sealing device；And
Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head is located in the pilot hole, and the dynamic clamping head and quiet clamping head is configured to be directed away from institute
The direction for stating second switch terminal often promotes the touch pole.
6. overvoltage protection switch according to claim 1, it is characterised in that the sealing device is diaphragm seal, when described
The sealing device is bloated to block the connected entrance, when described to the connected entrance when second contact is located at the contact position
The sealing device is directed away from the direction of the connected entrance and bloats when second contact is located at the open position.
7. overvoltage protection switch according to claim 1, it is characterised in that the predetermined pressure is P, the P meets：
140kPa≤P≤200kPa。
8. overvoltage protection switch according to claim 1, it is characterised in that the ambient pressure acts on the sealing dress
The pressure lifting surface area put is S, wherein the S meets：1mm2≤S≤100mm2。
9. a kind of pressure means, it is characterised in that include：
Apparatus body；With
Overvoltage protection switch according to any one of claim 1-8, the overvoltage protection switch is located at the utensil sheet
On body, wherein the ambient pressure is the pressure in the apparatus body, when the pressure in the apparatus body reach it is described pre-
The touch device moves upwards the shake-up triggering keeper during constant-pressure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795634.5U CN206102397U (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure gauge utensil that has it |
| PCT/CN2016/095335 WO2018018670A1 (en) | 2016-07-26 | 2016-08-15 | Excess pressure protection switch and pressure appliance provided with same |
| EP16908360.7A EP3318163B1 (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 |
|---|---|---|---|
| CN201620795634.5U CN206102397U (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure gauge utensil that has it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206102397U true CN206102397U (en) | 2017-04-19 |
Family
ID=58511855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620795634.5U Active CN206102397U (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure gauge utensil that has it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206102397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108851970A (en) * | 2017-05-12 | 2018-11-23 | 佛山市顺德区美的电热电器制造有限公司 | The over-pressure safety device and cooking apparatus of cooking apparatus |
-
2016
- 2016-07-26 CN CN201620795634.5U patent/CN206102397U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108851970A (en) * | 2017-05-12 | 2018-11-23 | 佛山市顺德区美的电热电器制造有限公司 | The over-pressure safety device and cooking apparatus of cooking apparatus |
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