CN206197752U - Overvoltage protection switch and the pressure means with it - Google Patents

Abstract

The utility model discloses a kind of overvoltage protection switch and pressure means, overvoltage protection switch includes：First switch terminal, second switch terminal, triggering keeper, triggering device, Switch main body and sealing device, first switch terminal are provided with the first contact；Second end of second switch terminal has the second contact；Triggering keeper is connected between the first end of second switch terminal and the second end, and triggering keeper includes trigger member and keeper；Touch device is disposed adjacent with second switch terminal；Sealing device drives touch device shake-up trigger member, trigger member to drive the second contact with the first contact separation so that the second contact moves to the open position with the first contact separation and the second contact is maintained at open position from the contact position often contacted with the first contact by keeper when sealing device is configured to reach predetermined pressure by the environmental pressure of connected entrance applying.According to overvoltage protection switch of the present utility model, the power-off protection in the case where exception is over-pressed is realized.

Description

Overvoltage protection switch and the pressure means with it

Technical field

The 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 of electric pressure cooking saucepan uses scope at 70kPa (kPa).Normally used in electric pressure cooking saucepan During, generally use relief valve or make crack between the pot of electric pressure cooking saucepan and lid (now electric pressure cooking saucepan is elastic pressure Power pot) mode realize 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 be damaged to user.

Utility model content

The utility model is intended at least solve one of technical problem present in prior art.Therefore, 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 the utility model first aspect, including：First switch terminal, the first switch end Son is provided with the first contact；Second switch terminal, the first end of the second switch terminal is fixing end, the second switch end Second end of son is movable end, and second end of the second switch terminal has the second contact, second contact and institute State the first contact often to contact, between the first end of the second switch terminal and second end opening with insertion； Triggering keeper, the triggering keeper is connected between the first end of the second switch terminal and second end, The triggering keeper includes trigger member and keeper, the trigger member and the neighbouring described second switch terminal of the opening The side wall of first end is connected, and the trigger member is configured to be formed towards institute when second contact is located at the contact position State convex surface that touch device bloats and be formed as away from the touch device when second contact is located at the open position The convex surface for bloating, the keeper is located between the second end of the free end of the trigger member and the second switch terminal；With And triggering device, the touch device is disposed adjacent with the second switch terminal；Switch main body, forms on the Switch main body There is the connected entrance communicated with external environment condition, wherein the first switch terminal, the second switch terminal, the triggering keeper It is each provided in the Switch main body with the touch device；Sealing device, the sealing device is located in the Switch main body, institute State sealing device to be connected with the touch device, the environmental pressure that the sealing device is configured to apply by the connected entrance reaches The sealing device drives the touch device to touch the trigger member, the trigger member by the holding during to predetermined pressure Part drives second contact with first contact separation so that second contact often contacts from first contact Contact position moves to the open position with first contact separation and second contact is 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, by set touch device and triggering keeper, when the pressure in pressure means reaches predetermined pressure, the first contact and Second contact disconnects, and can disconnect the heater circuit with first switch terminal and second switch terminal of pressure means, from And the power-off protection in the case where exception is over-pressed can be effectively realized, and, can be by second when the second contact is located at open position Contact is maintained at open position, is not in the situation that heater continues to heat, and increased the safety in utilization of pressure means.

According to some embodiments of the present utility model, be formed with slot on the keeper, the trigger member it is described from Stretched into the slot by end.

Further, the keeper is configured to the side court of the neighbouring described triggering device from the second switch terminal Extension is inclined to the side of neighbouring described first contact of the second switch terminal, towards the direction of neighbouring first contact.

Alternatively, the side wall at one end of the keeper and the second end of the neighbouring described second switch terminal of the opening It is connected and the other end is inclined towards the direction of touch device and extended.

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 direction that the dynamic clamping head and quiet clamping head is configured to be directed away from the second switch terminal often promotes institute State touch pole.

Alternatively, the sealing device is diaphragm seal, the sealing when second contact is located at the contact position Device is bloated to the connected entrance to block the connected entrance, the sealing when second contact is located at the open position The direction that device is directed away from the connected entrance bloats.

Alternatively, the predetermined pressure is P, and the P meets：140kPa≤P≤200kPa.

Alternatively, the pressure lifting surface area that the environmental pressure acts on the sealing device is S, wherein the S is full Foot：1mm²≤S≤100mm²。

According to the pressure means of the utility model second aspect, including according to the overvoltage of the above-mentioned first aspect of the utility model Protection switch.

Additional aspect of the present utility model and advantage 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 from description of the accompanying drawings below to embodiment is combined Become substantially and be readily appreciated that, wherein：

Fig. 1 is the profile of the overvoltage protection switch according to the utility model embodiment, wherein the second contact is in contact Position；

Fig. 2 is another profile of the overvoltage protection switch according to the utility model embodiment, wherein at the second contact In open position.

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：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.

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 or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining Description of Drawings 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 ", 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 " are, based on orientation shown in the drawings or position relationship, to be only Described with simplified for the ease of description the utility model, must had rather than the device or element for indicating or implying meaning specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation 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 indicated, the implication of " multiple " It is two or more.

, it is necessary to explanation, unless otherwise clearly defined and limited, term " is 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 mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Can be two connections of element internal.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.

The overvoltage protection switch 100 according to the utility model first aspect embodiment is described below with reference to Fig. 1-Fig. 2.Overvoltage Protection switch 100 can be used for needing the pressure means such as electric pressure cooking saucepan (not shown) for carrying out pressure cut-off protection especially On rigid pressure pot (i.e. in electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position).Work as pressure The normal pressure relief device such as pressure release defective valve of power utensil such as electric pressure cooking saucepan occur that abnormal over-pressed (pressure i.e. in pressure means is big Scope such as 70kPa is used in its normal pressure) when, overvoltage protection switch 100 can break the heater in pressure means Electricity, heats heater stop, prevents the pressure in pressure means from further raising.In description below the application, with Overvoltage 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 over-pressed It is first-class that protection switch 100 can be also used for other pressure means 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 first Switch terminal 1, second switch terminal 2, triggering keeper 3 and triggering device.

First switch terminal 1 has the first contact 11.The first end of second switch terminal 2 is (for example, the left side in Fig. 1 and Fig. 2 End) it 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 mistake Without relative motion, second end (for example, the right-hand member in Fig. 1 and Fig. 2) of second switch terminal 2 is activity to pressure protection switch 100 End, the second end of second switch terminal 2 can be motion.Second end of second switch terminal 2 is provided with the second contact 21, the Second end of two switch terminals 2 can drive the second contact 21 to move, so that the second contact 21 contacts with the first contact 11, or with First contact 11 separates.Second contact 21 often contacts with the first contact 11.

For example, as depicted in figs. 1 and 2, the first contact 11 is located at the free end of first switch terminal 1 (for example, Fig. 1 and Fig. 2 In upper end), the first contact 11 protrudes to be formed from a side surface of first switch terminal 1, similarly, the second contact 21 from second One side surface at the second end of switch terminal 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 For example in the heater circuit (not shown) of electric pressure cooking saucepan, the heater circuit includes heater.When pressure means are for example electric When pressure cooker is normally used, the first contact 11 remains and contacts that heater circuit is often turned on the second contact 21, heater work Make, heated with to food in pressure means etc..

Alternatively, the outer surface of the first contact 11 and the second contact 21 can be collectively formed by cambered surface and plane respectively, should Plane is located at the top of the first contact 11 and the second contact 21, thus, due to connecing between the first contact 11 and the second contact 21 Touch as face contacts, 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, above-mentioned second end of the above-mentioned first end of second switch terminal 2 and second switch terminal 2 it Between have insertion opening 22.For example, second switch terminal 2 is run through in opening 22 along the thickness direction of second switch terminal 2.Can be with Understand, specific size and dimension of opening 22 etc. can specifically be set according to actual requirement, preferably to meet reality It is required that.

As depicted in figs. 1 and 2, triggering keeper 3 includes the neighbour of trigger member 31 and keeper 32, trigger member 31 and opening 22 The side wall (for example, Fig. 1 and the left side wall in Fig. 2) of the first end of nearly second switch terminal 2 is connected, and the side wall is preferably formed into directly It is linear, to ensure the reliability that trigger member 31 is connected with the side wall.The remainder of trigger member 31 and remaining side wall of opening 22 It is spaced apart from each other.Trigger member 31 is configured to be formed towards when the second contact 21 is located at contact position that touch device bloats is convex Face (as shown in Figure 1), the now side away from touch device of the second switch terminal 2 that the first contact 11 is located at, second switch Above-mentioned second end of terminal 2 bends towards the direction of the first contact 11, and the second contact 21 and the first contact 11 can be effectively ensured It is in close contact, and is formed as the convex surface (as shown in Figure 2) bloated away from touch device when the second contact 21 is located at open position, Now second switch terminal 2 is directed away from the direction of touch device in the presence of touch device and bloats, such that it is able to drive Above-mentioned second end of two switch terminals 2 is directed away from the direction movement of the first contact 11, makes the second contact 21 and the first contact 11 Separate.

Here, it is necessary to explanation, due to itself stress constraint, makes trigger member 31 may remain in this and be directed away from touching The state that device is bloated, now the second contact 21 separated with the first contact 11, without resetting.Thus, by by trigger member 31 The curved towards curving is processed into, when the side bent to trigger member 31 exerts a force, trigger member 31 can be in the power Bloated to opposite side under effect and drive above-mentioned second end of second switch terminal 2 to move up and down, to realize and the first contact 11 Contact with separate.

Keeper 32 is located at the free end of trigger member 31 and the second end of second switch terminal 2 (for example, opening 22 is neighbouring The side wall at the second end of second switch terminal 2) between, when touch device touches trigger member 31, trigger member 31 passes through keeper 32 The second contact 21 is driven to be separated with the first contact 11, as shown in Figure 2.

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 contacted with triggering keeper 3 under (for example, when the second contact 21 is located at contact position).When environmental pressure reaches predetermined pressure When, touch device touch trigger member 31, trigger member 31 by keeper 32 drive the second contact 21 separated with the first contact 11 with The second contact 21 is set to move to what is with the first contact 11 separate from the contact position (as shown in Figure 1) with the first often contact of contact 11 Open position (as shown in Figure 2).It should be noted that when overvoltage protection switch 100 is used for pressure means such as electric pressure cooking saucepan When, " environmental pressure " can be understood as the pressure in pressure means such as electric pressure cooking saucepan.

For example, when the pressure in pressure means such as electric pressure cooking saucepan reaches predetermined pressure, touch device keeps with triggering Part 3 is contacted and touching triggering keeper 3 makes the second contact 21 be separated (do not contact) with the first contact 11, so that heater circuit Disconnect, heater is not worked, and the pressure in pressure means such as electric pressure cooking saucepan can be reduced gradually, be realized to pressure means The protection of such as electric pressure cooking saucepan, and do not discharge the gas of HTHP due to pressure means such as electric pressure cooking saucepan, so that will not be right User damages.Touch device can not contacted after triggering keeper 3 is touched with triggering keeper 3.

Alternatively, predetermined pressure is P, and P meets：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.

Wherein, triggering keeper 3 is connected between the above-mentioned first end of second switch terminal 2 and the second end.When second touch When point 21 is located at open position, triggering keeper 3 makes the second contact 21 be maintained at open position.For example, overvoltage protection switch 100 After first use (the first contact 11 and the second contact 21 disconnect) cannot Self-resetting, i.e. the first contact 11 and the second contact 21 will not Contact again turns on heater circuit, so as to increased the security that pressure means such as electric pressure cooking saucepan is used.

Switch main body 5 and sealing device 6, are formed with the connected entrance 51 communicated with external environment condition on Switch main body 5, for example, As depicted in figs. 1 and 2, connected entrance 51 can be formed in the bottom of Switch main body 5.When overvoltage protection switch 100 is used for pressure device During tool such as electric pressure cooking saucepan, " external environment condition " is referred to inside pressure means such as electric pressure cooking saucepan.Wherein first switch terminal 1, Second switch terminal 2, triggering keeper 3 and touch device are each provided in Switch main body 5.Thus, the can be accommodated by setting The Switch main body 5 of one switch terminal 1, second switch terminal 2, triggering keeper 3 and touch device, improves overvoltage protection switch 100 integration.

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 When the environmental pressure that connected entrance 51 applies reaches predetermined pressure, sealing device 6 drive touch device to touch trigger member 31, trigger member 31 drive the second contact 21 to be separated with the first contact 11 so that the second contact 21 often connects from the first contact 11 by keeper 32 Tactile contact position moves to the open position that with the first contact 11 separate and the second contact 21 is maintained at open position.By This, by setting sealing device 6, sealing device 6 can be by the inside of Switch main body 5 and such as electric pressure cooking saucepan of pressure means 200 Portion keeps apart, and makes have pressure difference between the inside of Switch main body 5 and such as electric pressure cooking saucepan inside of pressure means 200, 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 device to touch in the presence of pressure difference Dynamic trigger member 31.

Overvoltage protection switch 100 according to the utility model embodiment, simple structure, low cost.Work as overvoltage protection switch 100 be used for pressure means such as electric pressure cooking saucepan when, by set touch device and triggering keeper 3, when pressure means are for example electric When pressure in pressure cooker reaches predetermined pressure, the first contact 11 and the second contact 21 are disconnected, and pressure means can be made for example electric The heater circuit with first switch terminal 1 and second switch terminal 2 of pressure cooker disconnects, such that it is able to effectively realize in exception Power-off protection under overvoltage, and, the second contact 21 can be maintained at disconnection position when the second contact 21 is located at open position Put, be not in the situation of heater continuation heating, increased the safety in utilization of pressure means such as electric pressure cooking saucepan.Separately Outward, by setting Switch main body 5, can by first switch terminal 1, second switch terminal 2, triggering keeper 3, touch device and Sealing device 6 is integrated in Switch main body 5 so that overvoltage protection switch 100 is a global facility, when using, can be conveniently And overvoltage protection switch 100 is quickly attached to such as electric pressure cooking saucepan of pressure means 200, improve efficiency of assembling.By setting Sealing device 6 is put, the reliability of the action of overvoltage protection switch 100 can be effectively ensured.

Specifically, keeper 32 is configured to be opened towards second from the side of the neighbouring triggering device of second switch terminal 2 Close the side (for example, such as the direction in Fig. 1 and Fig. 2 from top to bottom) of neighbouring first contact 11 of terminal 2, touched towards neighbouring first The direction (for example, such as the direction in Fig. 1 and Fig. 2 to the right) of point 11 inclines and extends.For example, as depicted in figs. 1 and 2, keeper 32 One end (for example, the upper end in Fig. 1 and Fig. 2) be connected with the side wall at the second end of the neighbouring second switch terminal 2 of opening 22 and The other end (for example, the lower end in Fig. 1 and Fig. 2) of keeper 32 is extended obliquely downward towards the direction of touch device.Certainly, may be used To understand, the other end of keeper 32 can also tilt upward extension (not shown) towards the direction of the first contact 11. Thus, when the second contact 21 is located at open position, the touch part of bending is maintained at the bending position, and drives the keeper 32 to make Second contact 21 remains with the first contact 11 and separates, without situation about contacting again.

Wherein, slot is could be formed with keeper 32, the above-mentioned free end of trigger member 31 is stretched into slot, so that when tactile When moving part is acted, the second contact 21 of second switch terminal 2 can be driven to separate or connect with the first contact 11 by keeper 32 Touch.Certainly, the utility model not limited to this, the above-mentioned free end of trigger member 31 can also be fixedly connected with keeper 32.

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 Plane where son 2 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, spring is set in outside touch pole 42, and spring Stop with the roof and backstop muscle of pilot hole 411 respectively to often to promote touch pole 42 downwards, i.e., when pressure means are for example electric at two ends When pressure in pressure cooker is less than predetermined pressure, 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 The environmental pressure (for example, pressure means such as electric pressure cooking saucepan internal pressure) that seal apparatus 6 are configured to apply by connected entrance 51 reaches Drive the above-mentioned first end of touch pole 42 to stretch out pilot hole 411 to sealing device during predetermined pressure 6 and touch triggering keeper 3.It is close Seal apparatus 6 are used to separate the inside of Switch main body 5 and connected entrance 51, for example, with pressure means such as electric pressure cooking saucepan internal insulation Open, so as to there is pressure difference between the inside of Switch main body 5 and pressure means such as electric pressure cooking saucepan inside, so as to work as pressure means for example During the overvoltage of electric pressure cooking saucepan internal abnormality, sealing device 6 can promote touch pole 42 to move up to touch in the presence of pressure difference Triggering keeper 3.

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 being played for blocking the bottom of connected entrance 51 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 The direction that seal apparatus 6 are directed away from connected entrance 51 bloats (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.

Alternatively, the pressure lifting surface area that environmental pressure acts on sealing device is S, and wherein S meets：1mm²≤S≤ 100mm².For example, when overvoltage protection switch 100 is used for pressure means such as electric pressure cooking saucepan, S is that the pressure in apparatus body is made With the pressure lifting surface area on sealing device 6.

Overvoltage protection switch 100 according to 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 realizes overvoltage protection.This kind of principle of overvoltage protection switch 100 Be steam in pressure means such as electric pressure cooking saucepan by the access switch body 5 of connected entrance 51, when steam pressure is multiple more than elasticity During the elastic force of the position such as spring of part 43, sealing device 6 is driven on steam top, drives touch pole 42 to move, and touches triggering keeper 3, touches Can be flicked upwards after the hair stress of keeper 3 so that the second contact 21 of second switch terminal 2 is as triggering keeper 3 is to moving down It is dynamic, the first contact 11 of inside of Switch main body 5 and the second contact 21 are separated, and, after trigger member 31 is touched, keeper 32 The second contact 21 can be made to be maintained at open position, prevent the return of the second contact 21, pressure protection can be effectively increased, increase pressure The security of utensil such as electric pressure cooking saucepan, it is more safe and reliable compared with traditional mechanical pressure relief.

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.

For example, pressure means include apparatus body, overvoltage protection switch 100 is located on apparatus body, wherein above-mentioned environment Pressure is the pressure in apparatus body, and when the pressure in apparatus body reaches predetermined pressure, touch device touches second switch end Son 2.Specifically, apparatus body includes pot and lid, and the top of pot is opened wide, and cover cap is located at the top of pot, wherein, Overvoltage protection switch 100 is located on lid, and positioned at the center of lid.Seal is provided between pot and lid, to ensure pot Sealing between body and lid.

Pressure means such as electric pressure cooking saucepan according to the utility model embodiment, can effectively provide pressure anomaly power-off and protect Shield, and reduce cost.

Other compositions of pressure means such as electric pressure cooking saucepan according to the utility model embodiment and operation are 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 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 one or more any 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 where principle of the present utility model and objective is not departed from 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 including：

First switch terminal, the first switch terminal is provided with 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, between the first end of the second switch terminal and second end opening with insertion；

Touch device, the touch device is disposed adjacent with the second switch terminal；

Triggering keeper, the triggering keeper be connected to the second switch terminal the first end and second end it Between, the triggering keeper includes trigger member and keeper, the neighbouring described second switch end of the trigger member and the opening The side wall of the first end of son is connected, and the trigger member is configured to be formed as court when second contact is located at the contact position The convex surface that is bloated to the touch device and be formed as away from the touch device when second contact is located at open position The convex surface for bloating, the keeper is located between the second end of the free end of the trigger member and 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 environmental pressure that sealing device is configured to apply by the connected entrance and reach sealing device during predetermined pressure and drive institute State the touch device shake-up trigger member, the trigger member drives second contact to be touched with described first by the keeper Point is separated so that second contact moves to and first contact minute from the contact position often contacted with first contact From the open position and second contact is maintained at the open position.

2. overvoltage protection switch according to claim 1, it is characterised in that slot is formed with the keeper, it is described Stretch into the slot free end of trigger member.

3. overvoltage protection switch according to claim 1, it is characterised in that the keeper is configured to be opened from described second Side, court of the side of the neighbouring described touch device of pass terminal towards neighbouring described first contact of the second switch terminal Inclined to the direction of neighbouring first contact and extended.

4. overvoltage protection switch according to claim 3, it is characterised in that one end of the keeper and the opening The side wall at the second end of the neighbouring second switch terminal is connected and the other end is inclined towards the direction of touch device and extended.

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 Terminal is closed 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 environmental 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 including the overvoltage protection switch according to any one of claim 1-8.