CN109801811A - Temperature switch - Google Patents
Temperature switch Download PDFInfo
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- CN109801811A CN109801811A CN201910206859.0A CN201910206859A CN109801811A CN 109801811 A CN109801811 A CN 109801811A CN 201910206859 A CN201910206859 A CN 201910206859A CN 109801811 A CN109801811 A CN 109801811A
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Abstract
The present invention relates to a kind of temperature switches, including pressure cell and Switch main body.Switch main body is in parallel with pressure cell, Switch main body includes stationary contact, movable contact and conductive sheet, and stationary contact separably cooperates with movable contact, and movable contact is set on conductive sheet, conductive sheet includes active layers and passive layer, and the thermal expansion coefficient of active layers is greater than the thermal expansion coefficient of passive layer.When movable contact is separated with stationary contact, the working characteristics of pressure cell can be utilized, the electric current generated when the arcing of part is absorbed, damaged with reducing arcing ablation caused by stationary contact and movable contact.Meanwhile pressure cell has nonlinear characteristic, therefore when biggish voltage appears in two interpolar of pressure cell, pressure cell, to reduce the intensity of arcing, can be depressured protection on biggish voltage clamping to a relatively small value to realize.The temperature switch can reduce stationary contact and the ablation of movable contact damages, to improve the contact performance of stationary contact and movable contact, to prolong the service life.
Description
Technical field
The present invention relates to overheat protective technology fields, more particularly to a kind of temperature switch.
Background technique
Temperature switch is one of the common component in electric appliance, and temperature switch includes stationary contact and movable contact.It is normal in electric appliance
When work, stationary contact is contacted or is separated with movable contact, and after temperature is increased to particular value, stationary contact is separated or connect with movable contact
Touching, to be switched off or on circuit, to play superheat protecting function.When stationary contact is separated with movable contact, stationary contact and dynamic touching
Phenomenon of arc discharge can be generated between point, arcing each time will cause ablation damage to stationary contact and movable contact, cause stationary contact with
The contact performance of movable contact declines, and shortens the service life of temperature switch.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of temperature switch, it is intended to reduce the burning of stationary contact and movable contact
Deteriorate wound, to improve the contact performance of stationary contact and movable contact, to extend the service life of temperature switch.
A kind of temperature switch, comprising:
Pressure cell；And
Switch main body, in parallel with the pressure cell, the Switch main body includes stationary contact, movable contact and conductive sheet, institute
It states stationary contact separably to cooperate with the movable contact, the movable contact is set on the conductive sheet, and the conductive sheet includes
Active layers and passive layer, the thermal expansion coefficient of the active layers are greater than the thermal expansion coefficient of the passive layer.
Above-mentioned temperature switch has at least the following advantages:
If movable contact is set in active layers, when electric appliance works normally, conductive sheet be in free state, stationary contact with move
Contact contact.During temperature is raised, since the thermal expansion coefficient of active layers is greater than the thermal expansion coefficient of passive layer, thus it is main
The deformation of dynamic layer is greater than the deformation of passive layer, therefore conductive sheet can be to passive layer curving.After temperature is increased to particular value, lead
The bending degree of electric piece is larger, and the movable contact being set in active layers will be separated with stationary contact, to cut off circuit, to play
Superheat protecting function.Work as troubleshooting, after temperature drops to reset temperature, conductive sheet is restored to free state, movable contact with it is quiet
Contact is contacted again, and electric appliance can work normally again.
If movable contact is set on passive layer, when electric appliance works normally, conductive sheet be in free state, stationary contact with move
Contact separation.During temperature is raised, since the thermal expansion coefficient of active layers is greater than the thermal expansion coefficient of passive layer, thus it is main
The deformation of dynamic layer is greater than the deformation of passive layer, therefore conductive sheet can be to passive layer curving.After temperature is increased to particular value, lead
The bending degree of electric piece is larger, be set to movable contact on passive layer will with stationary contact point contact, to connect circuit, to play
Superheat protecting function.Meanwhile attached control circuit can be connected, starting cooling or radiator, to further function as overheat
Protective effect.
When movable contact is separated with stationary contact, since Switch main body is in parallel with pressure cell, pressure cell can be utilized
Working characteristics absorbs the electric current generated when the arcing of part, is damaged with reducing arcing ablation caused by stationary contact and movable contact.Together
When, since Switch main body is in parallel with pressure cell, and pressure cell has nonlinear characteristic, therefore when biggish voltage appears in pressure
When two interpolar of quick element, pressure cell can be by biggish voltage clamping to a relatively small value, to reduce drawing
The intensity of arc, to realize decompression protection.Above-mentioned temperature switch can be subtracted by way of absorbing electric current and decompression protection protection
The ablation of few stationary contact and movable contact damages, to improve the contact performance of stationary contact and movable contact, to extend temperature switch
Service life.
Technical solution is illustrated further below:
It in one of the embodiments, further include the first conductive layer, the surface that the stationary contact is contacted with the movable contact
It is provided with first conductive layer, the electric conductivity of the stationary contact and the movable contact is respectively less than first conductive layer
Electric conductivity.
The temperature switch further includes shell in one of the embodiments, the pressure cell, the stationary contact, institute
It states movable contact and the conductive sheet is respectively positioned in the shell.
The temperature switch further includes elastic slice in one of the embodiments, and the elastic slice is located at the conductive sheet and institute
It states between shell, the elastic slice offsets with the shell, and the conductive sheet is set on the elastic slice.
It in one of the embodiments, further include the second conductive layer, the surface that the shell is contacted with the elastic slice is all provided with
It is equipped with second conductive layer, the electric conductivity of the shell and the elastic slice is respectively less than the electric conductivity of second conductive layer
Energy.
The temperature switch further includes compressing member in one of the embodiments, and the compressing member is located at the pressure-sensitive member
Between part and the conductive sheet, for the conductive sheet to be pressed in the shell, the pressure cell is set the compressing member
It is placed on the compressing member.
The temperature switch further includes insulation sleeve in one of the embodiments, and the insulation sleeve is sheathed on the stationary contact
On point, mounting hole is formed on the pressure cell, the insulation sleeve is arranged in the mounting hole, the stationary contact is set
It is placed on the pressure cell.
The stationary contact is electrically connected with the pressure cell in one of the embodiments, the pressure cell with it is described
Shell electrical connection.
The temperature switch further includes sealant in one of the embodiments, and the sealant is attached at described pressure-sensitive
Element back on the shell bottom wall side, the insulation sleeve and the shell are tightly connected with the sealant.
The temperature switch further includes fastener in one of the embodiments, and perforation, institute are offered on the conductive sheet
Fastener is stated to be arranged in the perforation, the conductive sheet is fixed on the shell by fastener, the fastener with it is described
The setting of movable contact interval.
The shell includes the first shell and second shell being detachably connected in one of the embodiments, described quiet
Contact, the movable contact and the conductive sheet are respectively positioned in the first shell, and the pressure cell is located at the second shell
It is interior.
The temperature switch further includes bottom plate and the sealant that is coated on the bottom plate in one of the embodiments,
Through-hole is offered on the sealant, the stationary contact is located in the through-hole, and the sealant is located in the first shell.
The temperature switch further includes insulating layer in one of the embodiments, and the insulating layer forms accommodation space, institute
Pressure cell, the Switch main body and the sealant is stated to be respectively positioned in the accommodation space.
Detailed description of the invention
Fig. 1 is the schematic diagram that temperature switch and load are electrically connected in embodiment one；
Fig. 2 is the structural schematic diagram of temperature switch in embodiment one；
Fig. 3 is the cross-sectional view of temperature switch shown in Fig. 2；
Fig. 4 is the schematic diagram that temperature switch and load are electrically connected in embodiment two；
Fig. 5 is the structural schematic diagram of temperature switch in embodiment two；
Fig. 6 is the A direction view of temperature switch shown in Fig. 5；
Fig. 7 is the cross-sectional view of temperature switch shown in Fig. 5.
Description of symbols:
Embodiment one
10, temperature switch, 20, load, 100, pressure cell, 200, Switch main body, 210, stationary contact, 220, movable contact,
230, conductive sheet, 300, shell, 310, escape groove, 400, elastic slice, 500, compressing member, 600, insulation sleeve, 610, wear portion, 620,
Limiting section, 700, sealant.
Embodiment two
10 ', temperature switch, 20 ', load, 100 ', pressure cell, 200 ', Switch main body, 210 ', stationary contact, 220 ', dynamic
Contact, 230 ', conductive sheet, 300 ', shell, 310 ', first shell, 311 ', plug division, 320 ', second shell, 321 ', slot,
400 ', fastener, 500 ', bottom plate, 600 ', sealant.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of embodiment described above can carry out arbitrarily
Combination, for simplicity of description, it is not all possible to each technical characteristic in above-described embodiment combination be all described, so
And as long as there is no contradiction in the combination of these technical features, it all should be considered as described in this specification.
Embodiment one
It please refers to Fig.1 to Fig.3, the temperature switch 10 in embodiment one can be applied in electric appliance, to play overheating protection work
With.Temperature switch 10 includes pressure cell 100 and Switch main body 200, and Switch main body 200 includes stationary contact 210 and movable contact
220.Temperature switch 10 in embodiment one can reduce stationary contact 210 and the ablation of movable contact 220 damages, to improve stationary contact
210 with the contact performance of movable contact 220, to extend the service life of temperature switch 10.
Switch main body 200 is in parallel with pressure cell 100, and Switch main body 200 further includes conductive sheet 230, stationary contact 210 and dynamic
Contact 220 separably cooperates, and movable contact 220 is set on conductive sheet 230, and conductive sheet 230 includes active layers and passive layer, master
The thermal expansion coefficient of dynamic layer is greater than the thermal expansion coefficient of passive layer.In example 1, conductive sheet 230 is bimetal leaf.Certainly,
In other embodiments, conductive sheet 230 can also be other conductive materials.
If movable contact 220 is set in active layers, when electric appliance works normally, conductive sheet 230 is in free state, stationary contact
Point 210 is contacted with movable contact 220.During temperature is raised, since the thermal expansion coefficient of active layers is greater than the heat of passive layer
The coefficient of expansion, therefore the deformation of active layers is greater than the deformation of passive layer, therefore conductive sheet 230 can be to passive layer curving.Work as temperature
After being increased to particular value, the bending degree of conductive sheet 230 is larger, and the movable contact 220 being set in active layers will be with stationary contact
210 separation, to cut off circuit, to play superheat protecting function.Work as troubleshooting, it is conductive after temperature drops to reset temperature
Piece 230 is restored to free state, and movable contact 220 is contacted again with stationary contact 210, and electric appliance can work normally again.
If movable contact 220 is set on passive layer, when electric appliance works normally, conductive sheet 230 is in free state, stationary contact
Point 210 is separated with movable contact 220.During temperature is raised, since the thermal expansion coefficient of active layers is greater than the heat of passive layer
The coefficient of expansion, therefore the deformation of active layers is greater than the deformation of passive layer, therefore conductive sheet 230 can be to passive layer curving.Work as temperature
After being increased to particular value, the bending degree of conductive sheet 230 is larger, and the movable contact 220 being set on passive layer will be with stationary contact
210 contacts, to connect circuit, to play superheat protecting function.Meanwhile attached control circuit can be connected, starting cooling or
Radiator, to further function as superheat protecting function.
When movable contact 220 is separated with stationary contact 210, since Switch main body 200 is in parallel with pressure cell 100, Neng Gouli
With the working characteristics of pressure cell 100, the electric current generated when the arcing of part is absorbed, stationary contact and movable contact are made from arcing is reduced
At ablation damage.Since Switch main body 200 is in parallel with pressure cell 100, and pressure cell 100 has nonlinear characteristic, therefore
When biggish voltage appears in two interpolar of pressure cell 100, pressure cell 100 can be by biggish voltage clamping to one
In relatively small value, so that the intensity of arcing is reduced, to realize decompression protection.
Temperature switch 10 in embodiment one can reduce stationary contact by way of absorbing electric current and decompression protection protection
The ablation of point and movable contact damages, and to improve the contact performance of stationary contact 210 Yu movable contact 220, avoids stationary contact 210 and dynamic touching
Point 220 can not contact, or avoid phenomena such as stationary contact 210 is with 220 adhesion of movable contact, to extend the use of temperature switch 10
Service life.
In the conventional technology, in parallel with Switch main body again after being connected in series to the capacitor resistance.When movable contact is separated with stationary contact
When, the aftercurrent in circuit can be to capacitor charging.During aftercurrent can be to capacitor charging, aftercurrent can pass through
Resistance, the presence of resistance can make the impedance of circuit become larger.So, resistance also can equally increase the electricity in parallel with Switch main body
The capacity of appearance, therefore can be realizing arc quenching protection by way of inhibiting the voltage surge of Switch main body.
Compared to traditional technology, in implementing the temperature switch 10 in one, when absorbing part arcing using pressure cell 100
The electric current of generation, to realize arc quenching protection in the way of different.On the basis of realizing arc quenching protection, implement the temperature in one
Switch 10, moreover it is possible to using pressure cell 100 by biggish voltage clamping to a relatively small value, be protected with realizing to be depressured
Shield.Capacitor is saved due to implementing the temperature switch 10 in one, and resistance is replaced with into pressure cell 100, therefore temperature can be reduced and opened
The cost of the manufacture difficulty for closing 10, the volume for reducing temperature switch 10 and reduction temperature switch 10.
It should be noted that pressure cell is a kind of resistance device with nonlinear wind vibration, it is mainly used in electricity
Road bears to carry out voltage clamping when over-voltage, absorbs extra electric current to protect Sensitive Apparatus.Resistance is that there are two pins for a kind of tool
Current limiting element, after resistance is connect in circuit, the resistance value of resistor be it is fixed, it can limit the electricity by its institute's chord road
Flow size.The model of pressure cell in the present embodiment can be BCS14D420 or BCS14D350 etc..Certainly, in other implementations
In example, the pressure cell of other models can be flexibly chosen according to the actual situation.
Further, temperature switch 10 further includes the first conductive layer (not shown), and stationary contact 210 is contacted with movable contact 220
Surface be provided with the first conductive layer, the electric conductivity of stationary contact 210 and movable contact 220 is respectively less than the conduction of the first conductive layer
Performance.The presence of first conductive layer can reduce contact resistance between stationary contact 210 and movable contact 220, reduce stationary contact 210 and move
The calorific value of contact 220, to improve the conveyance capacity of temperature switch 10.In example 1, the first conductive layer can be silver layer
Or layer gold etc..Certainly, in other embodiments, the first conductive layer can save.
Further, temperature switch 10 further includes shell 300, pressure cell 100, stationary contact 210, movable contact 220 and is led
Electric piece 230 is respectively positioned in shell 300, and shell 300 can be to pressure cell 100, stationary contact 210, movable contact 220 and conductive sheet 230
It plays a protective role.Escape groove 310 is offered on the bottom wall of shell 300, escape groove 310 is located at conductive sheet 230 back on dynamic touching
The side of point 220, the presence of escape groove 310 can reserve space to the bending of conductive sheet 230, with guarantee movable contact 220 with
Stationary contact 210 can be separated or be contacted.Certainly, in other embodiments, escape groove 310 can be saved, and can make conductive sheet 230 and outer
The bottom wall interval of shell 300 is arranged.
In example 1, the outer profile of shell 300 is cylindrical, and assembling entrance (figure is not marked) is offered on shell 300,
The components such as pressure cell 100, stationary contact 210, movable contact 220 and conductive sheet 230 can be placed in shell 300 by assembling entrance
It is interior.On the thickness direction for the bottom wall that the opening direction of assembling entrance is located at shell 300, to increase the placement convenience of components.
The notch of escape groove 310 is round notch, the rounded sheet of conductive sheet 230, and movable contact 220 is located at the middle part of conductive sheet 230.When
So, in other embodiments, the shape of shell 300, escape groove 310 and conductive sheet 230 can flexible setting.
Further, the material of shell 300 can be conductive material, and stationary contact 210 and shell 300 are electrically connected, so as to
Shell 300 is set to become an electrode of temperature switch 10.Certainly, in other embodiments, the material of shell 300 can be insulation material
Matter can make stationary contact 210 become an electrode of temperature switch 10.
Further, temperature switch 10 further includes elastic slice 400, and elastic slice 400 is between conductive sheet 230 and shell 300, bullet
Piece 400 offsets with shell 300, and conductive sheet 230 is set on elastic slice 400.In the process isolated with movable contact 220 of stationary contact 210
In, elastic slice 400, which generates restoring force, under the action of restoring force, may make stationary contact after stationary contact 210 is separated with movable contact 220
Point 210 is contacted again with movable contact 220.Implementing in one, the rounded sheet of elastic slice 400, elastic slice 400 blocks escape groove 310, bullet
On the bottom wall of the periphery fixing shell 300 of piece 400.Certainly, in other embodiments, the shape of elastic slice 400 can flexible design.Or
Person, elastic slice 400 can save.
When assembling, in the state that stationary contact 210 and movable contact 220 contact, elastic slice 400 can be made to generate restoring force, so as to
In under the action of restoring force, increase the contact compactness of stationary contact 210 and movable contact 220, to reduce stationary contact 210 and dynamic touching
Contact impedance between point 220 reduces the calorific value between stationary contact 210 and movable contact 220, to be further reduced ablation damage
Wound.Similarly, it can make conductive sheet 230 that also there is certain deformation, to increase contact compactness of the stationary contact 210 with movable contact 220.
Certainly, in other embodiments, in the state that stationary contact 210 and movable contact 220 contact, elastic slice 400 and conductive sheet 230
In free state.
Further, temperature switch 10 further includes the second conductive layer (not shown), the table that shell 300 is contacted with elastic slice 400
Face is provided with the second conductive layer, and the electric conductivity of shell 300 and elastic slice 400 is respectively less than the electric conductivity of the second conductive layer.The
The presence of two conductive layers can reduce contact resistance between shell 300 and elastic slice 400, reduce the fever of shell 300 and elastic slice 400
Amount, to improve the conveyance capacity of temperature switch 10.In example 1, the second conductive layer can be silver layer or layer gold etc., shell
300 are coated with the second conductive layer with elastic slice 400 by way of plating.Certainly, in other embodiments, the second conductive layer can save
It goes.
Further, temperature switch 10 further includes compressing member 500, and compressing member 500 is located at pressure cell 100 and conductive sheet
Between 230, for conductive sheet 230 to be pressed in shell 300, pressure cell 100 is set on compressing member 500 compressing member 500.
In example 1, conductive sheet 230 and elastic slice 400 are pressed on the bottom wall of shell 300 by compressing member 500, on the one hand can be increased
The setting stability of conductive sheet 230 and elastic slice 400, on the other hand can be convenient for setting pressure cell 100.
In example 1, compressing member 500 is compression ring, and stationary contact 210 is arranged in compression ring.Compressing member 500 includes
Seal face and setting face, seal face with conductive sheet 230 for offseting, and setting face with pressure cell 100 for offseting.Seal face can
For plane, more securely conductive sheet 230 and elastic slice 400 to be pressed on the bottom wall of shell 300, setting face can also be plane,
In order to which pressure cell 100 is more securely set on setting face.Certainly, in other embodiments, the shape of compressing member 500
It can flexible design.
Further, temperature switch 10 further includes insulation sleeve 600, and insulation sleeve 600 is sheathed on stationary contact 210, pressure-sensitive member
Mounting hole is formed on part 100, insulation sleeve 600 is arranged in mounting hole, and stationary contact 210 is set on pressure cell 100.
Stationary contact 210 can be connect by the presence of insulation sleeve 600 with pressure cell 100 forms a component, and ease of assembly is in shell 300
It is interior.100 one side of pressure cell serves as functor, is damaged with reducing the ablation of stationary contact 210 and movable contact 220, on the other hand
Structural member is served as, stationary contact 210 is supported to certain altitude, in order to which stationary contact 210 and movable contact 220 separably cooperate.
Certainly, in other embodiments, insulation sleeve 600 can save.
Further, stationary contact is electrically connected with pressure cell, and pressure cell is electrically connected with shell, thus realize stationary contact with
The electrical connection of shell, in order to which shell is used as an electrode.In the present embodiment, temperature switch 10 further includes third conduction
Layer, third conductive layer is between stationary contact and pressure cell, and third conductive layer is for being electrically connected stationary contact and pressure cell.The
Three conductive layers can be silver layer or tin layers etc., to reduce the contact resistance between stationary contact and pressure cell.Certainly, in other realities
It applies in example, pressure cell can be used relative to casing insulation, pressure cell as an electrode.Alternatively, stationary contact can be relative to
Pressure cell insulation, stationary contact are used as an electrode.
In example 1, insulation sleeve 600 includes wearing portion 610 and limiting section 620, and the outer diameter for wearing portion 610 is less than limit
The outer diameter in position portion 620 wears portion 610 and is arranged in mounting hole, wears portion 610 close to end face and the pressure cell for wearing portion 610
100 offset, to prevent insulation sleeve 600 from moving along the axial direction of mounting hole to a certain extent.Certainly, in other embodiments
In, limiting section 620 can save, and wear portion 610 and mounting hole is interference fitted.
Further, temperature switch 10 further includes sealant 700, and sealant 700 is attached at pressure cell 100 back on outer
The side of the bottom wall of shell 300, insulation sleeve 600 and shell 300 are tightly connected with sealant 700.Insulation sleeve 600, shell 300 and
Sealant 700 can connect to form a closed component, can prevent the foreign objects such as water, paint or dust from entering the interior of the closed component
Portion, to be played to components such as pressure cell 100, stationary contact 210, movable contact 220 and the conductive sheets 230 for being located at the component internal
Protective effect.In example 1, sealant 700 is sealing paper layer.Certainly, in other embodiments, sealant 700 can be with
It is the layer structure formed by other materials.Or sealant 700 can save.
Further, temperature switch 10 further includes insulating layer (not shown), and insulating layer forms accommodation space, pressure cell
100, Switch main body 200 and sealant are respectively positioned in accommodation space.The presence of insulating layer on the one hand can be in accommodation space
Components play a protective role, on the other hand may also function as insulating effect.In example 1, insulating layer is paint layer, paint layer
It is formed by way of vacuum paint dipping, the presence of insulation sleeve 600, shell 300 and sealant 700 can avoid during vacuum paint dipping
Paint enters in the closed component that insulation sleeve 600, shell 300 and sealant 700 are formed.Certainly, in other embodiments, paint
Layer can be formed by modes such as sprayings.Alternatively, insulating layer can be rubber layer or plastic layer etc..Alternatively, insulating layer can save.
It, can be by adjusting the Separation and/or adjustment pressure cell 100 of movable contact 220 and stationary contact 210 when design
Parameter, in order to connect temperature switch 10 in the circuit of different operating conditions.The Separation of movable contact 220 and stationary contact 210
Adjustment mode may is that the depth of adjustment shell 300 and/or adjust the thickness etc. of compressing member 500.The pressure cell being adjusted
100 parameter may is that pressure voltage and/or maximum surge current value etc..
When assembling, movable contact 220 is welded on elastic slice 400, opens up through hole on conductive sheet 230, by conductive sheet 230
It is set on elastic slice 400, and movable contact 220 passes through through hole, movable contact 220 is set to conduction indirectly using elastic slice 400
On piece 230.Stationary contact 210 and insulation sleeve 600 are riveted, insulation sleeve 600 is welded in pressure cell 100 using silver paste and tin cream
On.Sealant 700 is set on pressure cell 100.The conductive sheet 230 for being provided with movable contact 220 is compressed using compressing member 500
In on the bottom wall of shell 300, the pressure cell 100 for being connected with stationary contact 210 is set on compressing member 500.Carry out Vaccum Permeating
Paint processing, to assemble formation temperature switch 10.Certainly, in other embodiments, movable contact 220 can also be directly arranged at conduction
On piece 230.
Temperature switch 10 can be used in DC circuit, or can also be used in alternating current circuit.In use, can be negative by light bulb etc.
20 are carried to connect with temperature switch 10.Temperature switch 10 in embodiment one can be used in 500 volts of DC circuits.
Embodiment two
Fig. 4 to Fig. 7 is please referred to, the temperature switch 10 ' in embodiment two can be applied in electric appliance, to play overheating protection
Effect.Temperature switch 10 ' includes pressure cell 100 ' and Switch main body 200 ', and Switch main body 200 ' includes stationary contact 210 ' and moves
Contact 220 '.Temperature switch 10 ' in embodiment two can reduce stationary contact 210 ' and the ablation of movable contact 220 ' damages, to mention
The contact performance of high stationary contact 210 ' and movable contact 220 ', to prolong the service life.
Switch main body 200 ' is in parallel with pressure cell 100 ', and Switch main body 200 ' further includes conductive sheet 230 ', stationary contact
210 ' separably cooperate with movable contact 220 ', and movable contact 220 ' is set on conductive sheet 230 ', and conductive sheet 230 ' includes actively
Layer and passive layer, the thermal expansion coefficient of active layers are greater than the thermal expansion coefficient of passive layer.In embodiment two Switch main body 200 ' with
The effect in parallel of pressure cell 100 ' is similar with the effect in parallel of pressure cell 100 ' with Switch main body 200 ' in embodiment one,
This is repeated no more.
Further, temperature switch 10 ' further includes shell 300 ' and fastener 400 ', offers and wears on conductive sheet 230 '
Hole, fastener 400 ' are arranged in perforation, and conductive sheet 230 ' is fixed on shell 300 ' by fastener 400 '.Fastener 400 ' with
The interval of movable contact 220 ' setting, in order to which movable contact 220 ' is separated or contacted with stationary contact 210 '.
In example 2, fastener 400 ' is that fastener 400 ' is first arranged in perforation, then by weldering nail when fixed
It is welded on shell 300 ' the fastener 400 ' being arranged in perforation.Certainly, in other embodiments, fastener 400 ' is gone back
It can be screw etc., conductive sheet 230 ' be fixed on shell 300 ' by the threaded connection of screw and shell 300 '.Alternatively, tight
Firmware 400 ' can save, and directly conductive sheet 230 ' can be fixed on shell 300 ' by modes such as welding or gluings.
Further, shell 300 ' includes the first shell 310 ' and second shell 320 ' being detachably connected, stationary contact
210 ', movable contact 220 ' and conductive sheet 230 ' are respectively positioned in first shell 310 ', and pressure cell 100 ' is located at second shell 320 '
It is interior.First shell 310 ' and the detachably connected one side of second shell 320 ' can convenient for by stationary contact 210 ', movable contact 220 ',
The components such as conductive sheet 230 ' and pressure cell 100 ' are set in shell 300 ', on the other hand easy to disassemble with convenient to overhaul.
Certainly, in other embodiments, shell 300 ' can also be integrally formed.
In example 2, first shell 310 ' includes plug division 311 ', is formed with slot 321 ' in second shell 320 ',
Plug division 311 ' is plugged in slot 321 ', to realize being detachably connected for first shell 310 ' and second shell 320 '.Grafting
The quantity in portion 311 ' is two, and the quantity of slot 321 ' is two, to improve the fastness of grafting.Certainly, in other embodiments
In, first shell 310 ' can also detachably be connected with second shell 320 ' by being clamped or being realized in the way of screw connection etc.
It connects.
Further, temperature switch 10 ' further includes bottom plate 500 ' and the sealant 600 ' that is coated on bottom plate 500 ', sealing
Through-hole is offered on layer 600 ', stationary contact 210 ' is located in through-hole.Sealant 600 ' be used for sealing shell 300 ', with prevent water,
The foreign objects such as paint or dust enter in shell 300 '.Sealant 600 ' is located in first shell 310 ', stationary contact 210 ' be set to by
On the bottom plate 500 ' that sealant 600 ' coats, movable contact 220 ' be located in first shell 310 ', therefore stationary contact 210 ' and dynamic touching
Compactedness between point 220 ' is preferable, is convenient for contact of the stationary contact 210 ' with movable contact 220 '.In example 2, sealant
600 ' be sealing paper layer.Sealant 600 ' can also be the layer structure formed by other materials.
Further, temperature switch 10 ' further includes insulating layer (not shown), and insulating layer forms accommodation space, pressure cell
100 ', Switch main body 200 ' and sealant 600 ' are respectively positioned in accommodation space.On the one hand the presence of insulating layer can be accommodated to being located at
Components in space play a protective role, and on the other hand may also function as insulating effect.In example 2, insulating layer is paint
Layer, paint layer are formed by way of vacuum paint dipping, and the presence of shell 300 ' and sealant 600 ' can avoid during vacuum paint dipping
Paint enters in the closed space that shell 300 ' and sealant 600 ' are formed.Certainly, in other embodiments, paint layer can pass through
The modes such as spraying are formed.Alternatively, insulating layer can be rubber layer or plastic layer.Alternatively, insulating layer can save.
When assembling, movable contact 220 ' is welded on conductive sheet 230 ', it is using fastener 400 ' that conductive sheet 230 ' is fixed
In in first shell 310 '.Stationary contact 210 ' is welded on bottom plate 500 ', sealant 600 ' is coated on bottom plate 500 '.It will
Pressure cell 100 ' is set in second shell 320 ', connect first shell 310 ' with second shell 320 '.Carry out Vaccum Permeating
Paint processing, to assemble formation temperature switch 10 '.It connects in use, 20 ' can be loaded light bulb etc. with temperature switch 10 '.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of temperature switch characterized by comprising
Pressure cell；And
Switch main body, in parallel with the pressure cell, the Switch main body includes stationary contact, movable contact and conductive sheet, described quiet
Contact separably cooperates with the movable contact, and the movable contact is set on the conductive sheet, and the conductive sheet includes actively
Layer and passive layer, the thermal expansion coefficient of the active layers are greater than the thermal expansion coefficient of the passive layer.
2. temperature switch according to claim 1, which is characterized in that it further include shell, the pressure cell, the stationary contact
It selects, the movable contact and the conductive sheet are respectively positioned in the shell.
3. temperature switch according to claim 2, which is characterized in that further include elastic slice, the elastic slice is located at the conduction
Between piece and the shell, the elastic slice offsets with the shell, and the conductive sheet is set on the elastic slice.
4. temperature switch according to claim 2, which is characterized in that further include compressing member, the compressing member is located at described
Between pressure cell and the conductive sheet, the compressing member is described pressure-sensitive for the conductive sheet to be pressed in the shell
Element is set on the compressing member.
5. temperature switch according to claim 2, which is characterized in that further include insulation sleeve, the insulation sleeve is sheathed on institute
It states on stationary contact, mounting hole is formed on the pressure cell, the insulation sleeve is arranged in the mounting hole, will be described quiet
Contact is set on the pressure cell.
6. temperature switch according to claim 5, which is characterized in that the stationary contact is electrically connected with the pressure cell,
The pressure cell is electrically connected with the shell.
7. temperature switch according to claim 5, which is characterized in that further include sealant, the sealant is attached at institute
State pressure cell back on the shell bottom wall side, the insulation sleeve and the shell, which are sealed with the sealant, to be connected
It connects.
8. temperature switch according to claim 2, which is characterized in that the shell includes the first shell being detachably connected
And second shell, the stationary contact, the movable contact and the conductive sheet are respectively positioned in the first shell, the pressure cell
In the second shell.
9. temperature switch according to claim 8, which is characterized in that further include bottom plate and be coated on close on the bottom plate
Sealing offers through-hole on the sealant, and the stationary contact is located in the through-hole, and the sealant is located at the first shell
In vivo.
10. temperature switch according to claim 6 or 9, which is characterized in that further include insulating layer, the insulating layer is formed
Accommodation space, the pressure cell, the Switch main body and the sealant are respectively positioned in the accommodation space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910206859.0A CN109801811A (en) | 2019-03-19 | 2019-03-19 | Temperature switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910206859.0A CN109801811A (en) | 2019-03-19 | 2019-03-19 | Temperature switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109801811A true CN109801811A (en) | 2019-05-24 |
Family
ID=66563640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910206859.0A Pending CN109801811A (en) | 2019-03-19 | 2019-03-19 | Temperature switch |
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| Country | Link |
|---|---|
| CN (1) | CN109801811A (en) |
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Application publication date: 20190524 |
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| RJ01 | Rejection of invention patent application after publication |