CN206499332U - Pressure means - Google Patents

Abstract

The utility model discloses a kind of pressure means, including：Apparatus body and overvoltage protection switch, overvoltage protection switch includes Switch main body, first switch terminal, second switch terminal, trigger keeper, touch device and sealing device, first switch terminal has the first contact, second end of second switch terminal has the second contact, triggering keeper includes trigger member and elastic keeper, elastic keeper is connected between the free end of trigger member and the second end of second switch terminal, pressure when the pressure in apparatus body reaches predetermined pressure in apparatus body is applied to sealing device by connected entrance, the direction that sealing device drive touch device moves downward shake-up trigger member and makes elastic keeper be directed away from the second contact often pulls the second end of second switch terminal so that the second contact moves to open position from contact position and the second contact is maintained at open position.According to pressure means of the present utility model, it is possible to achieve the power-off protection under exception is over-pressed.

Description

Pressure means

Technical field

The utility model is related to household appliance technical field, more particularly, to a kind of pressure means.

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 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.

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 pressure means, adds the safety in utilization of pressure means.

According to pressure means of the present utility model, including：Apparatus body；And overvoltage protection switch, the overvoltage protection opens Pass includes Switch main body, first switch terminal, second switch terminal, triggering keeper, touch device and sealing device, described to open Close the connected entrance being formed with body with being connected inside the apparatus body, the first switch terminal, the second switch end Sub, described triggering keeper, the touch device and the sealing device are each provided in the Switch main body, the first switch Terminal has the first contact, and 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 and first contact are normal Contact, the opening between the first end of the second switch terminal and the second end with insertion, the triggering keeper is located at institute State on second switch terminal, the triggering keeper includes trigger member and elastic keeper, the trigger member and the opening The side wall of the first end of the neighbouring second switch terminal is connected, and the elastic keeper is connected to the free end of the trigger member Between the second end of the second switch terminal, the touch device is disposed adjacent with the second switch terminal, described close Seal apparatus is connected with the touch device, when the pressure in the apparatus body reaches predetermined pressure, in the apparatus body Pressure the sealing device, the sealing device be applied to by the connected entrance to drive the touch device to move downward tactile The direction that moving the trigger member makes the elastic keeper be directed away from second contact often pulls the second switch terminal The second end so that second contact is moved to and first contact from the contact position often contacted with first contact The open position of separation simultaneously makes second contact be maintained at the open position.

According to pressure means of the present utility model, by setting touch device and triggering keeper, when in pressure means When pressure reaches predetermined pressure, the first contact and the second contact disconnect, can make pressure means have first switch terminal and The heater circuit of second switch terminal disconnects, so as to effectively realize the power-off protection in the case where exception is over-pressed, moreover, when second Second contact can be maintained at open position by contact when being located at open position, be not in the feelings that heater continues to heat Condition, adds the safety in utilization of pressure means.In addition, by setting Switch main body, first switch terminal, second can be opened Close terminal, triggering keeper, touch device and sealing device to be integrated in Switch main body so that overvoltage protection switch is one whole Body component, in use, can facilitate and overvoltage protection switch quickly is attached into pressure means, improves efficiency of assembling.It is logical Setting sealing device is crossed, the reliability of overvoltage protection switch action can be effectively ensured.Overvoltage protection switch it is simple in construction, into This is low.

According to some embodiments of the present utility model, pipe, institute are communicated between the connected entrance and the apparatus body The pressure stated in apparatus body is applied downwardly on the touch device by the communicating pipe.

Specifically, the touch device includes：Fixed seat is touched, the shake-up fixed seat is fixed on the Switch main body It is interior, pilot hole is formed with the shake-up fixed seat, wherein the first switch terminal and the second switch terminal are fixed on 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 touches the triggering keeper, and the second end of the touch pole is connected with the sealing device；And elasticity is multiple Position part, 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 the second switch The direction of terminal often promotes the touch pole.

Alternatively, the sealing device is diaphragm seal, the sealing when second contact is located at the contact position 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 bulging of the connected entrance.

Alternatively, the communicating pipe generally U-shaped pipe.

Alternatively, the trigger member be shell fragment, when second contact be located at the contact position when trigger member and The elastic keeper is located at the side of the neighbouring touch device of the second switch terminal, when second contact is located at The trigger member and the elastic keeper are located at the remote shake-up dress of the second switch terminal during open position The side put.

Alternatively, the elastic keeper is compression spring.

According to some embodiments of the present utility model, the predetermined pressure is P, and the P is met：140kPa≤P≤ 200kPa。

According to some embodiments of the present utility model, the apparatus body includes：Pot, the top of the pot is opened wide； And lid, the lid is located at the top of the pot, wherein the overvoltage protection switch is located on the lid.

Alternatively, the overvoltage protection switch is located at the center of the lid.

According to some embodiments of the present utility model, the pressure means are electric pressure cooking saucepan or electric pressure pot.

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

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 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；

Fig. 3 is the stereogram of the overvoltage protection switch according to the utility model embodiment, wherein the second contact is in contact Position；

Fig. 4 is the schematic diagram of first switch terminal shown in Fig. 3 and second switch terminal；

Fig. 5 is the profile of the pressure means according to the 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：Trigger 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：Seal；204：Communicating pipe.

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 or element with same or like function are represented to same or similar label eventually.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 " axial direction ", " radial direction ", " circumference " are Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.

In addition, 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 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 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 the utility model.

The pressure means 200 according to the utility model embodiment are described below with reference to Fig. 1-Fig. 5.Pressure means 200 can be with For electric pressure cooking saucepan.It is that electric pressure cooking saucepan especially rigid pressure pot (exists with pressure means 200 in the description below the application In electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position) exemplified by illustrate.Certainly, ability The technical staff in domain is appreciated that pressure means 200 can also be other pressure means 200 for needing pressure cut-off to protect, example Such as electric pressure pot.

As shown in figure 5, according to such as electric pressure cooking saucepan of pressure means 200 of the utility model embodiment, including apparatus body With overvoltage protection switch 100.When exception occurs in the normal pressure relief device such as pressure release defective valve of such as electric pressure cooking saucepan of pressure means 200 During overvoltage (pressure i.e. in pressure means 200 is more than its normal pressure and uses scope such as 70kPa), overvoltage protection switch 100 Heater in pressure means 200 can be powered off, heat heater stop, prevent the pressure in pressure means 200 Further rise.

Specifically, as Figure 1-Figure 4, overvoltage protection switch 100 includes Switch main body 5, first switch terminal 1, the Two switch terminals 2, triggering keeper 3, touch device and sealing device 6.Overvoltage protection switch 100 has Switch main body 5, switch The connected entrance 51 with being connected inside apparatus body is formed with body 5, for example, as depicted in figs. 1 and 2, connected entrance 51 can be with shape Into the bottom in Switch main body 5.Wherein first switch terminal 1, second switch terminal 2, triggering keeper 3, touch device and close Seal apparatus 6 is each provided in Switch main body 5.Thus, first switch terminal 1, second switch terminal 2 can be accommodated by setting, touched The Switch main body 5 of keeper 3, touch device and sealing device 6 is sent out, the integration of overvoltage protection switch 100 is improved.

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, and second Contact 21 is located at the free end (for example, right-hand member in Fig. 1 and Fig. 2) of second switch terminal 2, and the second contact 21 is from second switch end Protrude to be formed in one side surface of son 2.

First switch terminal 1 and second switch terminal 2 are connected to pressure means suitable for (for example, by way of wire 7) In the heater circuit (not shown) of 200 such as electric pressure cooking saucepans, the heater circuit includes heater.When pressure means 200 Such as electric pressure cooking saucepan is normal in use, the first contact 11 is remained with the second contact 21 contacts, and heater circuit is often turned on, and is heated Device works, to be heated 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 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 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).

The first end (for example, left end in Fig. 1 and Fig. 2) of second switch terminal 2 is fixing end, now second switch terminal 2 first end is fixed, and the first end of second switch terminal 2 does not have relative motion relative to overvoltage protection switch 100, the The second end (for example, right-hand member in Fig. 1 and Fig. 2) of two switch terminals 2 is movable end, and the second end of second switch terminal 2 is can With motion.Wherein the second contact 21 is located at above-mentioned second end of second switch terminal 2, thus, the second of second switch terminal 2 End can drive the second contact 21 to move, so that the second contact 21 is contacted with the first contact 11, or be separated with the first contact 11.

There is the opening 22 of insertion, for example, such as Fig. 3 and Fig. 4 institutes between the first end of second switch terminal 2 and the second end Show, thickness direction of the opening 22 along second switch terminal 2 runs through second switch terminal 2.It is understood that opening 22 is specific Size and dimension etc. can specifically be set according to actual requirement, preferably to meet actual requirement.

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, left side wall in Fig. 1-Fig. 4) be connected, the side wall is preferably formed as For linear, to ensure 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, and the free end of trigger member 31 is (for example, the right side in Fig. 1-Fig. 4 End) it is swingable relative to the other end (for example, left end in Fig. 1-Fig. 4) relative with free end of trigger member 31.

Further, reference picture 1- Fig. 4, trigger member 31 can be shell fragment, be touched when the second contact 21 is located at contact position Outbox 31 and elastic keeper 32 are located at the side of the neighbouring touch device of second switch terminal 2 (for example, under in Fig. 1 and Fig. 2 Side), when the second contact 21 is located at open position, trigger member 31 and elastic keeper 32 are located at the remote of second switch terminal 2 and touched The side (for example, upside in Fig. 1 and Fig. 2) of dynamic device.Alternatively, shell fragment is formed as planar structure, thus, processing it is simple and Cost is low, but not limited to this.

Elastic keeper 32 is connected to the above-mentioned free end of trigger member 31 and the second end of second switch terminal 2 (for example, opening The side wall at the second end of the neighbouring second switch terminal 2 of mouth 22) between, the elastic keeper when touch device touches trigger member 31 32 directions for being directed away from the second contact 21 often pull the second end of second switch terminal 2 so that the second contact 21 is maintained at disconnection Position, as shown in Figure 2.Alternatively, elastic keeper 32 is compression spring, for example, as Figure 1-Figure 4, elastic keeper 32 Larger Reducing screw spring can be accumulated for two ends cross-sectional area by smaller, intermediate cross-section.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 will be often upward under the pulling force effect of compression spring, 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 is often separated with the first contact 11, the second contact 21 and first Contact 11 will not be contacted again.

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, downside in Fig. 1 and Fig. 2) of the remote first switch terminal 1 of switch terminal 2.Sealing device 6 and touch device It is connected.Pressure when the pressure in apparatus body reaches predetermined pressure, in apparatus body is applied to sealing by connected entrance 51 Device 6, sealing device 6, which drive touch device to move downward shake-up trigger member 31, makes elastic keeper 32 be directed away from the second contact 21 direction often pulls the second end of second switch terminal 2 so that the second contact 21 is from the contact position often contacted with the first contact 11 Put (as shown in Figure 1) and move to the open position (as shown in Figure 2) separated with the first contact 11.Now pressure means 200 are for example Pressure in electric pressure cooking saucepan is acting downwardly on touch device triggers keeper 3 with downward touch, and then drives second switch end Son 2 is acted, and overvoltage protection switch 100 is reversely installed, and its direction of action is downward.For example, the integral-rotation of overvoltage protection switch 100 180 ° of settings, as shown in Figure 5.

Wherein, by setting sealing device 6, sealing device 6 can by the inside of Switch main body 5 with pressure means 200 for example Electric pressure cooking saucepan internal insulation is opened, 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 which when such as electric pressure cooking saucepan internal abnormality of pressure means 200 is over-pressed, sealing device 6 can be promoted in the presence of pressure difference to be touched Device is moved to touch trigger member 31.

Touch device does not connect under normal conditions (for example, when the second contact 21 is located at contact position) with triggering keeper 3 Touch.When the pressure in such as electric pressure cooking saucepan of pressure means 200 reaches predetermined pressure, touch device is contacted with triggering keeper 3 And touching triggering keeper 3 makes the second contact 21 separate and (not contact) with the first contact 11, so that heater circuit disconnects, plus Thermal is not worked, and the pressure in such as electric pressure cooking saucepan of pressure means 200 can be reduced gradually, be realized to pressure means 200 The protection of such as electric pressure cooking saucepan, and because such as electric pressure cooking saucepan of pressure means 200 does not discharge the gas of HTHP, so that will not User is damaged.Touch device can not contacted after second switch terminal 2 is touched with second switch terminal 2.

Alternatively, predetermined pressure is P, and P is met：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 set, preferably to meet actual requirement.

Triggering keeper 3 is located on second switch terminal 2, and keeper 3 is triggered when the second contact 21 is located at open position The second contact 21 is set to be maintained at open position.For example, the first use of overvoltage protection switch 100 (the first contact 11 and the second contact 21 disconnect) after can not Self-resetting, i.e. the first contact 11 and the second contact 21 will not again contact and turn on heater circuit, so as to increase The security for having added such as electric pressure cooking saucepan of pressure means 200 to use.

According to the pressure means 200 of the utility model embodiment, by setting touch device and triggering keeper 3, work as pressure When pressure in such as electric pressure cooking saucepan of power utensil 200 reaches predetermined pressure, the first contact 11 and the second contact 21 disconnect, and can make The heater circuit with first switch terminal 1 and second switch terminal 2 of such as electric pressure cooking saucepan of pressure means 200 disconnects, so that The power-off protection in the case where exception is over-pressed can be effectively realized, moreover, can be by second when the second contact 21 is located at open position Contact 21 is maintained at open position, is not in the situation that heater continues to heat, adds such as voltage of pressure means 200 The safety in utilization of power pot.In addition, by setting Switch main body 5, can by first switch terminal 1, second switch terminal 2, touch Hair keeper 3, touch device and sealing device 6 are integrated in Switch main body 5 so that overvoltage protection switch 100 is an entirety Part, in use, can facilitate and overvoltage protection switch 100 quickly is attached into such as electric pressure cooking saucepan of pressure means 200, is carried High efficiency of assembling.By setting sealing device 6, the reliability of the action of overvoltage protection switch 100 can be effectively ensured.Overvoltage is protected The simple in construction of switch 100 is protected, cost is low.

Pipe 204 is communicated between connected entrance 51 and apparatus body, for example, as shown in figure 5, communicating pipe 204 it is generally U-shaped Pipe, thus, processing is simple and cost is low, but not limited to this.Pressure in apparatus body is applied downwardly to touch by communicating pipe 204 On dynamic device, when the pressure in apparatus body is more than predetermined pressure, pressure in apparatus body can be by substantially taking the shape of the letter U Communicating pipe 204 is acting downwardly on touch device, so that touch device touches triggering keeper 3.It is understood that connection The concrete shape of pipe 204 can be set according to the actual requirements and specifically, as long as meeting allows the pressure in apparatus body downward Act on touch device.

As depicted in figs. 1 and 2, touch device is located at the side (example of the remote first switch terminal 1 of second switch terminal 2 Such as, the downside in Fig. 1 and Fig. 2), specifically, touch device includes：Touch fixed seat 41, touch pole 42 and elastic reset Part 43, touches fixed seat 41 and is fixed in Switch main body 5, and it is fixed relative to Switch main body 5 now to touch fixed seat 41 , touch and pilot hole 411 is formed with fixed seat 41, wherein first switch terminal 1 and second switch terminal 2 are fixed on shake-up admittedly In reservation 41.Touch pole 42 is located in pilot hole 411, and the first end (for example, upper end in Fig. 1 and Fig. 2) of touch pole 42 is suitable to Stretch out pilot hole 411 and touch triggering keeper 3, pilot hole 411 has guide effect to touch pole 42, to ensure that touch pole 42 is transported Dynamic accuracy.Alternatively, the bearing of trend of touch pole 42 is vertical with the plane where second switch terminal 2, thus, it is possible to more Touching triggering keeper 3 well makes the second contact 21 be separated with the first contact 11.The lower end of touch pole 42 is provided with what is stretched out Backstop muscle.

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 respectively with the roof and backstop muscle of pilot hole 411 to often to promote touch pole 42 vertically, i.e., when pressure means 200 at two ends 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.

Further, sealing device 6 is located in Switch main body 5, the second end of touch pole 42 provided with sealing device 6 (for example, Lower end in Fig. 1 and Fig. 2), for example, as depicted in figs. 1 and 2, be formed with holding tank on sealing device 6, touch pole 42 it is above-mentioned Second end is suitable to be fixed in holding tank.When the pressure in apparatus body is applied on sealing device 6 and reached by connected entrance 51 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 is used to separate the inside of Switch main body 5 and connected entrance 51, for example, with inside such as electric pressure cooking saucepan of pressure means 200 every Leave, so as to there is 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 device When such as electric pressure cooking saucepan internal abnormality of tool 200 is over-pressed, sealing device 6 can promote touch pole 42 to moving down in the presence of pressure difference It is dynamic 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 bulgings are to block connected entrance 51, for example, as shown in figure 1, the edge of diaphragm seal and being played for the bottom for blocking connected entrance 51 Two layers of sealedly effect, 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 is directed away from the direction bulging (as shown in Figure 2) of connected entrance 51.Now sealing device 6 can use flexible Material is made, and can further improve the sealing effectiveness of sealing device 6.

According to some embodiments of the present utility model, as shown in figure 5, apparatus body such as electric pressure cooking saucepan includes：Pot 201 With lid 202, the top of pot 201 is opened wide, and lid 202 is located at the top of pot 201, and wherein overvoltage protection switch 100 is located at On lid 202.Alternatively, overvoltage protection switch 100 is located at the center of lid 202.Provided with close between pot 201 and lid 202 Sealing 203, to ensure the sealing between pot 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 P span is 120kPa-200kPa (bags Include endpoint value)；S is the pressure lifting surface area that acts on sealing device 6 of environmental pressure (for example, as shown in figure 5, S is utensil sheet Internal pressure acts on the pressure lifting surface area of the top surface of sealing device 6), it is the size of steam and forced contact point.

Thus, the conversion of above value is passed through, 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 where second switch terminal 2 is acted, the 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 S span is 1mm²-100mm²(including endpoint value), F1 span is 0.1N-20N (including endpoint value), G Span be 0.1N-1N (including endpoint value), the relatively good type selecting for the stress of dynamic clamping head and quiet clamping head 43.

According to such as electric pressure cooking saucepan of pressure means 200 of the utility model embodiment, it is possible to achieve when pressure means 200 During such as the pressure in electric pressure cooking saucepan between 140kPa-200kPa, deenergization realizes overvoltage protection.This kind of overvoltage protection is opened The principle for closing 100 be steam in such as electric pressure cooking saucepan of pressure means 200 by the access switch body 5 of connected entrance 51, work as steam When pressure is more than the elastic force of such as spring of dynamic clamping head and quiet clamping head 43, sealing device 6 is driven on steam top, drives touch pole 42 to move, and touches It can be flicked after triggering keeper 3, the stress of second switch terminal 2, the second contact 21 of second switch terminal 2 is with second switch end Son 2 is moved to horizontal side, separates the first contact 11 of inside of Switch main body 5 and the second contact 21.Set on second switch terminal 2 Triggering keeper 3 is put, after second switch terminal 2 is touched, such as compression spring of elastic keeper 32 holds second switch end Son 2, prevents the return of the second contact 21, can be effectively increased pressure protection there is provided pressure anomaly power-off protection, increase pressure means The security of 200 such as electric pressure cooking saucepans, overvoltage protection switch 100 is more safe and reliable compared with traditional mechanical pressure relief, And reduce cost.

According to other compositions of such as electric pressure cooking saucepan of pressure means 200 of the utility model embodiment and operation 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.Moreover, description specific features, 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： These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle of the present utility model and objective, replaced And modification, scope of the present utility model limits by claim and its equivalent.

Claims (11)

1. a kind of pressure means, it is characterised in that including：

Apparatus body；With

Overvoltage protection switch, the overvoltage protection switch includes Switch main body, first switch terminal, second switch terminal, triggering The connected entrance with being connected inside the apparatus body is formed with keeper, touch device and sealing device, the Switch main body, Pipe, the communicating pipe generally U-shaped pipe, the first switch end are communicated between the connected entrance and the apparatus body Sub, described second switch terminal, the triggering keeper, the touch device and the sealing device are each provided at the switch originally In vivo, the first switch terminal has the first contact, and the first end of the second switch terminal is fixing end, and described second opens The second end for closing terminal is movable end, and second end of the second switch terminal has the second contact, second contact Often contacted with first contact, there is the opening of insertion between the first end of the second switch terminal and the second end, it is described Triggering keeper is located on the second switch terminal, and the triggering keeper includes trigger member and elastic keeper, described to touch Outbox is connected with the side wall of the first end of the neighbouring second switch terminal of the opening, and the elastic keeper is connected to institute State between the free end of trigger member and the second end of the second switch terminal, the touch device and the second switch terminal It is disposed adjacent, the sealing device is connected with the touch device,

Pressure when the pressure in the apparatus body reaches predetermined pressure, in the apparatus body is applied by the connected entrance Being added to the sealing device, the sealing device and driving the touch device to move downward the shake-up trigger member makes the elasticity The direction that keeper is directed away from second contact often pulls the second end of the second switch terminal so that described second touches Point moves to the open position with first contact separation from the contact position often contacted with first contact and made described Second contact is maintained at the open position.

2. pressure means according to claim 1, it is characterised in that the pressure in the apparatus body passes through the connection Pipe is applied downwardly on the touch device.

3. pressure means according to claim 2, it is characterised in that the touch device includes：

Fixed seat is touched, the shake-up fixed seat is fixed in the Switch main body, guiding is formed with the shake-up fixed seat Hole, wherein the first switch terminal and the second switch terminal are 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 the stretching pilot hole and touched 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.

4. pressure means according to claim 1, it is characterised in that the sealing device is diaphragm seal, when described second The sealing device is bloated to block the connected entrance to the connected entrance when contact is located at the contact position, when described second The sealing device is directed away from the direction bulging of the connected entrance when contact is located at the open position.

5. pressure means according to claim 1, it is characterised in that the trigger member is shell fragment, when second contact The trigger member and the elastic keeper are located at the neighbouring described tactile of the second switch terminal during positioned at the contact position The side of dynamic device, when second contact is located at the open position, the trigger member and the elastic keeper are located at institute State the side of the remote touch device of second switch terminal.

6. pressure means according to claim 1, it is characterised in that the elastic keeper is compression spring.

7. pressure means according to claim 1, it is characterised in that the predetermined pressure is P, the P is met：140kPa ≤P≤200kPa。

8. pressure means according to claim 1, it is characterised in that the apparatus body includes：

Pot, the top of the pot is opened wide；With

Lid, the lid is located at the top of the pot, wherein the overvoltage protection switch is located on the lid.

9. pressure means according to claim 8, it is characterised in that the overvoltage protection switch is located in the lid Centre.

10. pressure means according to claim 1, it is characterised in that the pressure means are electric pressure cooking saucepan or Voltage force Pot.

11. pressure means according to claim 1, it is characterised in that environmental pressure is acted on the sealing device Pressure lifting surface area is S, wherein the S is met：1mm²≤S≤100mm²。