CN107647775A - Overvoltage protection switch and there are its pressure means - Google Patents
Overvoltage protection switch and there are its pressure means Download PDFInfo
- Publication number
- CN107647775A CN107647775A CN201610597057.3A CN201610597057A CN107647775A CN 107647775 A CN107647775 A CN 107647775A CN 201610597057 A CN201610597057 A CN 201610597057A CN 107647775 A CN107647775 A CN 107647775A
- Authority
- CN
- China
- Prior art keywords
- contact
- switch
- switch terminal
- keeper
- touch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a kind of overvoltage protection switch and pressure means, overvoltage protection switch includes：First switch terminal, second switch terminal, triggering keeper, trigger 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 from the contact position often contacted with the first contact and the second contact is maintained at open position by keeper when sealing device is configured to reach predetermined pressure by the environmental pressure that connected entrance applies.According to the overvoltage protection switch of the present invention, the power-off protection in the case where exception is over-pressed is realized.
Description
Technical field
The present invention relates to household appliance technical field, more particularly, to a kind of overvoltage protection switch and has its pressure means.
Background technology
In correlation technique, the normal pressure use range of electric pressure cooking saucepan is at 70kPa (kPa).In electric pressure cooking saucepan normal use
During, generally use relief valve or make crack between the pot of electric pressure cooking saucepan and lid (now electric pressure cooking saucepan for elasticity press
Power pot) mode realize normal pressure release.However, between pressure release defective valve or pot and lid can not normally crack to discharge
During gas in electric pressure cooking saucepan, easily there is situation about popping in electric pressure cooking saucepan, so as to be damaged to user.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, one object of the present invention
It is to propose a kind of overvoltage protection switch, the structure of the overvoltage protection switch is simple.
It is another object of the present invention to propose a kind of pressure means with above-mentioned overvoltage protection switch.
Overvoltage protection switch according to a first aspect of the present invention, including：First switch terminal, on the first switch terminal
Provided with the first contact；Second switch terminal, the first end of the second switch terminal is fixing end, the second switch terminal
Second end is movable end, and second end of the second switch terminal has the second contact, second contact and described the
One contact often contacts, and has the opening of insertion between the first end of the second switch terminal and second end；Triggering
Keeper, the triggering keeper is connected between the first end of the second switch terminal and second end, described
Triggering keeper includes trigger member and keeper, the trigger member and the first of the neighbouring second switch terminal of the opening
The side wall at end is connected, and the trigger member is configured to be formed towards described touch when second contact is located at the contact position
Move the convex surface of device bulging and be formed as bloating away from the touch device when second contact is located at the open position
Convex surface, the keeper is located between the free end of the trigger member and the second end of the second switch terminal；And touch
Transmitting apparatus, the touch device are disposed adjacent with the second switch terminal；Switch main body, on the Switch main body formed with
The connected entrance that external environment condition communicates, wherein the first switch terminal, the second switch terminal, the triggering keeper and institute
Touch device is stated to be each provided in the Switch main body；Sealing device, the sealing device are located in the Switch main body, described close
Seal apparatus is connected with the touch device, and the sealing device is configured to reach pre- by the environmental pressure that the connected entrance applies
The sealing device drives the touch device shake-up trigger member, the trigger member to pass through the keeper band during constant-pressure
Second contact is moved with first contact separation so that second contact contacts from what first contact often contacted
Position moves to the open position with first contact separation and second contact is maintained at the open position.
According to the overvoltage protection switch of the present invention, simple in construction, cost is low.When overvoltage protection switch is used for pressure means
When, by setting touch device and triggering keeper, when the pressure in pressure means reaches predetermined pressure, the first contact and the
Two contacts disconnect, and can make pressure means there is the heater circuit of first switch terminal and second switch terminal to disconnect, so as to
The power-off protection in the case where exception is over-pressed can be effectively realized, moreover, can be touched when the second contact is located at open position by second
Point is maintained at open position, is not in the situation that heater continues heating, adds the safety in utilization of pressure means.
According to some embodiments of the present invention, formed with slot, the free end of the trigger member on the keeper
Stretch into the slot.
Further, the keeper is configured to the side court from the neighbouring trigger device of the second switch terminal
Side to neighbouring first contact of the second switch terminal, the direction inclination extension towards neighbouring first contact.
Alternatively, the side wall of one end of the keeper and the second end of the neighbouring second switch terminal of the opening
It is connected and the other end tilts extension towards the direction of touch device.
According to some embodiments of the present invention, the touch device includes：Fixed seat is touched, it is described to touch shape in fixed seat
Into there is pilot hole, wherein the first switch terminal and the second switch terminal are fixed in the shake-up fixed seat；Touch
Bar, the touch pole are located in the pilot hole, and the first end of the touch pole is suitable to the stretching pilot hole and touches described touch
Keeper is sent out, 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 are set
In the pilot hole, the direction that the dynamic clamping head and quiet clamping head is configured to be directed away from the second switch terminal often promotes described touch
Lever.
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 predetermined pressure is P, and the P meets：140kPa≤P≤200kPa.
Alternatively, the pressure lifting surface area that the environmental pressure is acted on the sealing device is S, wherein the S expires
Foot：1mm2≤S≤100mm2。
Pressure means according to a second aspect of the present invention, including opened according to the overvoltage protection of the above-mentioned first aspect of the present invention
Close.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the profile of overvoltage protection switch according to embodiments of the present invention, wherein the second contact is in contact position；
Fig. 2 is another profile of overvoltage protection switch according to embodiments of the present invention, wherein the second contact is in disconnected
Open position.
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：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.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " axle
To ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, be only for
It is easy to the description present invention and simplifies description, rather than instruction or implies that signified device or element there must be specific side
Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two
Individual or two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The overvoltage protection switch 100 of embodiment according to a first aspect of the present invention is described below with reference to Fig. 1-Fig. 2.Overvoltage protection
The pressure means such as electric pressure cooking saucepan (not shown) that switch 100 can be used for needing to carry out pressure cut-off protection is especially rigid
On pressure cooker (i.e. in electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position).Work as pressure device
Have a normal pressure relief device of such as electric pressure cooking saucepan such as pressure release defective valve occurs that abnormal over-pressed (pressure i.e. in pressure means is more than it
Normal pressure use range such as 70kPa) when, overvoltage protection switch 100 can power off the heater in pressure means, make
Heater stop heats, and prevents the pressure in pressure means from further raising.In the description below the application, protected with overvoltage
Shield switch 100 is used to exemplified by electric pressure cooking saucepan illustrate.Certainly, it will be understood to those skilled in the art that overvoltage protection is opened
It is first-class that pass 100 can be also used for other pressure means such as electric pressure pot.
As depicted in figs. 1 and 2, the overvoltage protection switch 100 of embodiment, including first switch according to a first aspect of the present invention
Terminal 1, second switch terminal 2, triggering keeper 3 and trigger 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
Pressure protection switch 100 does not have relative motion, and the second end (for example, right-hand member in Fig. 1 and Fig. 2) of second switch terminal 2 is activity
End, the second end of second switch terminal 2 can move.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
Protrude to be formed in one side surface at the second end of switch terminal 2.
First switch terminal 1 and second switch terminal 2 are connected to pressure means suitable for (for example, by way of wire 7)
Such as in the heater circuit (not shown) of electric pressure cooking saucepan, the heater circuit includes heater.When pressure means are for example electric
During pressure cooker normal use, the first contact 11 remains and contacted that heater circuit often turns on the second contact 21, heater work
Make, to be heated to food in pressure means etc..
Alternatively, the outer surface of the first contact 11 and the second contact 21 can be collectively formed by cambered surface and plane respectively, should
Plane is located at the top of the first contact 11 and the second contact 21, thus, due to 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, 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, opening 22 runs through second switch terminal 2 along the thickness direction of second switch terminal 2.Can be with
Understand, the 22 specific size and dimension etc. of being open 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 trigger member 31 and keeper 32, the neighbour of trigger member 31 and opening 22
The side wall (for example, Fig. 1 and 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 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 the convex of touch device bulging when the second contact 21 is located at contact position
The side in face (as shown in Figure 1), the now remote touch device for the second switch terminal 2 that the first contact 11 is located at, second switch
The direction of above-mentioned second end of terminal 2 towards the first contact 11 is bent, 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) away from touch device bulging when the second contact 21 is located at open position,
Now second switch terminal 2 is directed away from the direction bulging of touch device in the presence of touch device, so as to drive the
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
Separation.
Here, it is necessary to which explanation, due to itself stress constraint, makes trigger member 31 may remain in this and be directed away from touching
Device bulging state, 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 force bent to trigger member 31, trigger member 31 can be in the power
Bloated under effect to opposite side 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 separating.
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, downside in Fig. 1 and Fig. 2) of the remote 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 to separate with the first contact 11 with
The second contact 21 is set to move to what is separated with the first contact 11 from the contact position (as shown in Figure 1) often contacted with the first 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 pressure of the pressure means for example in electric pressure cooking saucepan.
For example, when the pressure when pressure means for example in electric pressure cooking saucepan reaches predetermined pressure, touch device is kept with triggering
Part 3 contacts and touching triggering keeper 3 makes the second contact 21 separate and (not contact) with the first contact 11, so that heater circuit
Disconnect, heater is not worked, and pressure of the pressure means for example in electric pressure cooking saucepan can be reduced gradually, be realized to pressure means
Such as the protection of electric pressure cooking saucepan, and because pressure means such as electric pressure cooking saucepan does not discharge the gas of HTHP, so that will not be right
User damages.Touch device can not contact after triggering keeper 3 is touched with triggering keeper 3.
Alternatively, predetermined pressure P, P meet：140kPa≤P≤200kPa.Its concrete numerical value can be according to actual pressure
The type of utensil such as electric pressure cooking saucepan and specifically set, preferably to meet actual requirement.
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) can not Self-resetting, i.e. the first contact 11 and the second contact 21 will not
Contact turns on heater circuit again, so as to add the security that pressure means such as electric pressure cooking saucepan uses.
Switch main body 5 and sealing device 6, 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
When having such as electric pressure cooking saucepan, " external environment condition " refers to pressure means for example inside 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
One switch terminal 1, second switch terminal 2, the Switch main body 5 for triggering keeper 3 and touch device, improve 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 separated with the first contact 11 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 pressure means 200 for example in electric pressure cooking saucepan
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 embodiments of the present invention, simple in construction, cost is low.When overvoltage protection switch 100 is used
When pressure means such as electric pressure cooking saucepan, by setting touch device and triggering keeper 3, when pressure means such as electric pressure cooking saucepan
When interior pressure reaches predetermined pressure, the first contact 11 and the second contact 21 disconnect, and can make pressure means such as electric pressure cooking saucepan
The heater circuit with first switch terminal 1 and second switch terminal 2 disconnect, so as to effectively realize it is abnormal it is over-pressed under
Power-off protection, will not moreover, the second contact 21 can be maintained at into open position when the second contact 21 is located at open position
There is the situation that heater continues heating, add the safety in utilization of pressure means such as electric pressure cooking saucepan.In addition, by setting
Switch main body 5 is put, can be by first switch terminal 1, second switch terminal 2, triggering keeper 3, touch device and sealing device 6
It is integrated in Switch main body 5 so that overvoltage protection switch 100 is a global facility, in use, can facilitate and quickly will
Overvoltage protection switch 100 is attached to such as electric pressure cooking saucepan of pressure means 200, improves efficiency of assembling.By setting sealing device
6, the reliability of the action of overvoltage protection switch 100 can be effectively ensured.
Specifically, keeper 32 is configured to open from the side of the neighbouring trigger device of second switch terminal 2 towards second
Close the side (for example, such as 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 direction in Fig. 1 and Fig. 2 to the right) of point 11 tilts extension.For example, as depicted in figs. 1 and 2, keeper 32
One end (for example, 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, lower end in Fig. 1 and Fig. 2) of keeper 32 extends obliquely downward towards the direction of touch device.Certainly, may be used
With understanding, 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 keeper 32 to make
Second contact 21 remains with the first contact 11 and separated, 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 as to when tactile
When moving part acts, by keeper 32 the second contact 21 of second switch terminal 2 can be driven to separate or connect with the first contact 11
Touch.Certainly, the invention is not restricted 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 invention, as depicted in figs. 1 and 2, touch device is located at the remote of second switch terminal 2
The side (for example, downside in Fig. 1 and Fig. 2) of first switch terminal 1, specifically, touch device includes：Touch fixed seat
41st, touch pole 42 and dynamic clamping head and quiet clamping head 43, touch in fixed seat 41 formed with pilot hole 411, the wherein He of first switch terminal 1
Second switch terminal 2, which is fixed on, to be touched in fixed seat 41.Touch pole 42 is located in pilot hole 411, the first end (example of touch pole 42
Such as, the upper end in Fig. 1 and Fig. 2) it is suitable to stretch out pilot hole 411 to touch triggering keeper 3, pilot hole 411 has to touch pole 42
There is guide effect, to ensure the accuracy of the motion of touch pole 42.Alternatively, the bearing of trend of touch pole 42 and second switch terminal
Plane where 2 is vertical, the second contact 21 is separated with the first contact 11 thus, it is possible to preferably touch triggering keeper 3.Touch
The lower end of lever 42 is provided with the backstop muscle to stretch 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
Both ends are only supported with the roof and backstop muscle of pilot hole 411 respectively, often to promote touch pole 42 downwards, i.e., when pressure means are for example electric
When pressure in pressure cooker is less than predetermined pressure, touch pole 42 can reset under the action of the spring.
Wherein, the second end (for example, 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, it is suitable to be fixed in holding tank formed with holding tank, above-mentioned second end of touch pole 42 on sealing device 6.It is close
The environmental pressure (for example, pressure means such as electric pressure cooking saucepan internal pressure) that seal apparatus 6 is 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 is 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 electric pressure cooking saucepan internal abnormality overvoltage, sealing device 6 can promote touch pole 42 to move up to touch in the presence of pressure difference
Trigger 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 bulgings are 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 layers of sealing, it 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.
Alternatively, the pressure lifting surface area that environmental pressure is acted on sealing device 6 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 embodiments of the present invention, it is possible to achieve when pressure means are for example in electric pressure cooking saucepan
When pressure is between 140kPa-200kPa, deenergization, overvoltage protection is realized.The principle of this kind of overvoltage protection switch 100 is pressure
Steam of the power utensil for example in electric pressure cooking saucepan is by the access switch body 5 of connected entrance 51, when steam pressure is more than dynamic clamping head and quiet clamping head
During the elastic force of 43 such as springs, sealing device 6 is driven on steam top, drives touch pole 42 to move, and touches triggering keeper 3, and triggering is protected
It can be flicked upwards after the stress of gripping member 3 so that the second contact 21 of second switch terminal 2 moves down with triggering keeper 3, makes
The first contact 11 of inside of Switch main body 5 and the second contact 21 separate, moreover, after trigger member 31 is touched, keeper 32 can be with
The second contact 21 is maintained at open position, prevent the return of the second contact 21, pressure protection can be effectively increased, increase pressure means
Such as the security of electric pressure cooking saucepan, compared with traditional mechanical pressure relief, more securely and reliably.
The pressure means of embodiment according to a second aspect of the present invention, including according to the above-mentioned first aspect embodiment of the present invention
Overvoltage protection switch 100.
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 according to embodiments of the present invention such as electric pressure cooking saucepan, pressure anomaly power-off protection can be effectively provided,
And reduce cost.
Other of pressure means according to embodiments of the present invention such as electric pressure cooking saucepan are formed and operated general for this area
All it is known for logical technical staff, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
- A kind of 1. overvoltage protection switch, it is characterised in that including：First switch terminal, the first switch terminal are 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 have the second contact, and second contact and first contact are normal Contact, there is the opening of insertion between the first end of the second switch terminal and second end；Trigger keeper, it is described 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 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 Be formed as away from the shake-up to the convex surface of touch device bulging and when second contact is located at the open position Device bulging convex surface, the keeper be located at the trigger member free end and the second switch terminal the second end it Between；Trigger device, the touch device are disposed adjacent with the second switch terminal；Switch main body, 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 are located in the Switch main body, and the sealing device is connected with the touch device, institute State sealing device when sealing device is configured to reach predetermined pressure by the environmental pressure that the connected entrance applies 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 separation is so that second contact moves to and first contact minute from the contact position often contacted with first contact From open position and second contact is maintained at the open position.
- 2. overvoltage protection switch according to claim 1, it is characterised in that described formed with slot on the keeper The free end of trigger member is stretched into the slot.
- 3. overvoltage protection switch according to claim 1, it is characterised in that the keeper is configured to open from described second Close side of the side towards neighbouring first contact of the second switch terminal, the court of the neighbouring trigger device of terminal Extension is tilted to the direction of neighbouring first contact.
- 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 tilts extension towards the direction of touch device.
- 5. according to the overvoltage protection switch any one of claim 1-4, it is characterised in that the touch device includes：Fixed seat is touched, it is described to touch in fixed seat formed with pilot hole, 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 are 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；AndDynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are 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 to the connected entrance when second contact is located at the contact position, when described The sealing device is directed away from the direction bulging of the connected entrance 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, and 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597057.3A CN107647775B (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure appliance with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597057.3A CN107647775B (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure appliance with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107647775A true CN107647775A (en) | 2018-02-02 |
| CN107647775B CN107647775B (en) | 2020-11-20 |
Family
ID=61127307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610597057.3A Active CN107647775B (en) | 2016-07-26 | 2016-07-26 | Overvoltage protection switch and pressure appliance with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107647775B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202919915U (en) * | 2012-09-04 | 2013-05-08 | 美的集团股份有限公司 | Electric pressure cooker with power failure protection function |
| CN103876617A (en) * | 2014-03-11 | 2014-06-25 | 九阳股份有限公司 | Pressure switch capable of accurately controlling pressure, and electric pressure cooker |
| CN203690209U (en) * | 2013-11-29 | 2014-07-02 | 佛山市华诺温控器有限公司 | Single non-automatically-resetting type pressure relief switch |
| CN203953300U (en) * | 2014-06-21 | 2014-11-26 | 珠海格力电器股份有限公司 | Electric pressure cooker and non-self-resetting pressure switch thereof |
| CN204033094U (en) * | 2014-09-18 | 2014-12-24 | 浙江爱仕达生活电器有限公司 | With the thermal-insulation electric heating kettle of safety device |
| CN205107325U (en) * | 2015-10-20 | 2016-03-30 | 佛山市顺德区美的电热电器制造有限公司 | Culinary art device and overvoltage protection structure thereof |
| CN205162752U (en) * | 2015-10-20 | 2016-04-20 | 佛山市顺德区美的电热电器制造有限公司 | Culinary art device and overvoltage protection structure thereof |
-
2016
- 2016-07-26 CN CN201610597057.3A patent/CN107647775B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202919915U (en) * | 2012-09-04 | 2013-05-08 | 美的集团股份有限公司 | Electric pressure cooker with power failure protection function |
| CN203690209U (en) * | 2013-11-29 | 2014-07-02 | 佛山市华诺温控器有限公司 | Single non-automatically-resetting type pressure relief switch |
| CN103876617A (en) * | 2014-03-11 | 2014-06-25 | 九阳股份有限公司 | Pressure switch capable of accurately controlling pressure, and electric pressure cooker |
| CN203953300U (en) * | 2014-06-21 | 2014-11-26 | 珠海格力电器股份有限公司 | Electric pressure cooker and non-self-resetting pressure switch thereof |
| CN204033094U (en) * | 2014-09-18 | 2014-12-24 | 浙江爱仕达生活电器有限公司 | With the thermal-insulation electric heating kettle of safety device |
| CN205107325U (en) * | 2015-10-20 | 2016-03-30 | 佛山市顺德区美的电热电器制造有限公司 | Culinary art device and overvoltage protection structure thereof |
| CN205162752U (en) * | 2015-10-20 | 2016-04-20 | 佛山市顺德区美的电热电器制造有限公司 | Culinary art device and overvoltage protection structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107647775B (en) | 2020-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106037458B (en) | A kind of pressure cut-off device and the electric pressure cooking saucepan including the device | |
| CN107647777A (en) | Pressure means | |
| CN104887063B (en) | Electric pressure cooking saucepan | |
| CN202919915U (en) | Electric pressure cooker with power failure protection function | |
| CN105996752A (en) | Electric pressure cooker and pressure switch-off device thereof | |
| CN106373801B (en) | Fine motion inductive switch | |
| CN205107325U (en) | Culinary art device and overvoltage protection structure thereof | |
| CN100490714C (en) | Steam discharge device for electric pressure heat insulating rice cooker | |
| CN206213855U (en) | Overvoltage protection switch and the pressure means with it | |
| CN204015966U (en) | Button air bleeding valve and adopt the pressure cooker of this air bleeding valve | |
| CN107647775A (en) | Overvoltage protection switch and there are its pressure means | |
| CN206197742U (en) | Overvoltage protection switch and the pressure means with it | |
| CN105962797B (en) | Bread toaster with safety lock | |
| CN206197752U (en) | Overvoltage protection switch and the pressure means with it | |
| CN206102397U (en) | Overvoltage protection switch and pressure gauge utensil that has it | |
| CN2585394Y (en) | Hot fusiable cut-out protector | |
| CN206849774U (en) | Thermal Cutoffs component and there is its wall-breaking machine | |
| CN208658704U (en) | Cooking apparatus | |
| CN104900441A (en) | Gear switch adjusting device | |
| CN107647779A (en) | Overvoltage protection switch and there are its pressure means | |
| CN206950042U (en) | Overvoltage protection switch and there are its pressure means | |
| CN206197751U (en) | Overvoltage protection switch and the pressure means with it | |
| CN206197750U (en) | Overvoltage protection switch and the pressure means with it | |
| CN107647778A (en) | Pressure means | |
| CN107647770A (en) | Overvoltage protection switch and there are its pressure means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |