CN1362717A - Thermal-response switch - Google Patents
Thermal-response switch Download PDFInfo
- Publication number
- CN1362717A CN1362717A CN01144784A CN01144784A CN1362717A CN 1362717 A CN1362717 A CN 1362717A CN 01144784 A CN01144784 A CN 01144784A CN 01144784 A CN01144784 A CN 01144784A CN 1362717 A CN1362717 A CN 1362717A
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- China
- Prior art keywords
- mentioned
- housing
- bimetal leaf
- terminal
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H2011/0087—Welding switch parts by use of a laser beam
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H2037/525—Details of manufacturing of the bimetals, e.g. connection to non bimetallic elements or insulating coatings
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
- Manufacture Of Switches (AREA)
Abstract
The purpose of the present invention is to provide a structure of a thermal-response switch using a bimetal piece, which is capable of preventing the scattering of melted metal when incorporating the bimetal piece into the housing and laser-welding it on a fixed terminal and of incorporating the bimetal piece with high precision. To solve the problem, the thermal switch has a housing with a bottom, a fixed contact arranged on the inner bottom face of the housing and a flip part capable of flipping according to the temperature, and comprises the bimetal piece with a movable contact, which contacts and separates from the fixed contact, fixed at one end thereof, and a fixed terminal arranged on the inner bottom of the housing with the other end of the bimetal piece overlapped and fixed thereon in a cantilever. An opening, through which a laser beam can be emitted from the outer bottom of the housing, is formed on the bottom of the housing to match the overlapped position between the fixed terminal and the bimetal piece.
Description
Technical field
The present invention relates to a kind of thermal-response switch, particularly make the travelling contact upset by the thermal response of bimetal leaf, thereby electric terminal is opened or closed construction of switch about a kind of.
Background technology
Thermal-response switch is provided with movable electrode and fixed electrode, is connected with the loop of electric equipment and this electric equipment is protected.Above-mentioned movable electrode is that the thermal reaction element (bimetallic) that several the different sheet metals of thermal coefficient of expansion combine is made operation strip; The said fixing electrode then constitutes normally closed contact formula loop with movable electrode.
That is to say, because the thermal-response switch that is connected with the loop of electric equipment is made such, promptly, when excessive electric current flows through this electric equipment or environment temperature when very high, by bimetallic crooked inverting action make and break contact is opened, thereby is just cut off and give to electric equipment.And, by above-mentioned cut-out giving electricity, environment temperature descended to electric equipment, bimetallic is automatically reset, make make and break contact closed once more, begin electric equipment is given again, therefore can have to prevent the dangerous effect that takes place, and electric equipment is moved in the temperature range of the regulation of being everlasting.
And; also known a kind of technology, promptly, with bimetallic be provided with side by side as the overcurrent protection resistance in circuit, the superfluous voltage more than applying rated value and when flowing through excess current; blow and the loop is disconnected by this resistance, thereby electric equipment is protected.
The structure of the thermal-response switch before this be on the inner bottom surface of the housing that is formed with under casing shape by insulating material such as synthetic resin, sky opens certain intervals, setting a pair of fixed terminal that is made of conductive metal in the face of landing.Wherein, form fixed contact on a side the fixed terminal, the opposing party's fixed terminal upper cantilever shape ground fastening bimetal leaf, and at a distolateral set travelling contact that tightens of this bimetal leaf.
And, above-mentioned travelling contact be can contact with the said fixing contact or discretely, sky opens certain intervals, setting in the face of landing, and forms dome-type upset portion in the central authorities of above-mentioned bimetal leaf, this upset portion makes and can overturn according to variation of temperature.Under common state, above-mentioned travelling contact is contacting with the said fixing contact, and the switch loop becomes the state of connection.
Above-mentioned bimetal leaf is fastened on the said fixing terminal with methods such as laser welding, the position of carrying out laser welding be with above-mentioned upset portion between middle, face toward with above-mentioned travelling contact another distolateral on.In addition, tabular lid is installed also, it covers the peristome of the housing of accommodating above-mentioned bimetal leaf.
For above-mentioned such bimetal leaf is fastened on the said fixing terminal, as shown in figure 10, use bimetallic attract anchor clamps 51 will be fastening the above-mentioned bimetal leaf of above-mentioned travelling contact be positioned on the assigned position of above-mentioned housing, coincidence is packed into after on the said fixing terminal; In next operation, with laser irradiation device 52, from the upper face side of housing, carry out laser welding and assembled.
Among the figure, 53 expressions form banded band, the 54th, the guide member of assembling device, the 55th, the pillar of assembling device, the 56th, the substrate of assembling device continuously with a plurality of housings.
Because in the thermal-response switch before manufacturing is above-mentioned, fixed terminal and bimetal leaf are being carried out under the occasion of laser welding, dispersing of metal can be taken place when motlten metal, thereby this metal that disperses can remain in the bottom in the housing, for being removed just must clean, it waits other operation, therefore assembling also just becomes miscellaneous, and the problem that can not make is at an easy rate arranged.
Again because with the switch case miniaturization accordingly, in the assembling of former thermal-response switch, bimetallic can not be attracted anchor clamps 51 and laser irradiation device 52 to be configured on the same position uninterruptedly mutually.So after installing to bimetal leaf in the housing, must make workpiece be transported to the allocation position of laser irradiation device 52, just might move and cause the offset of bimetal leaf by this towards arrow Y direction.
The content of invention
Therefore, in order to solve the problem that above-mentioned prior art exists, the purpose of this invention is to provide a kind of thermal-response switch, it is to use the structure of the thermal-response switch of bimetal leaf, when being laser-welded to fixed terminal, can prevent to disperse because of metal dissolves to produce in that bimetal leaf is assembled into housing.
Another object of the present invention provides a kind of thermal-response switch, and it can assemble bimetal leaf accurately.
For the present invention that achieves the above object takes following technical scheme:
Thermal-response switch is characterized in that, is provided with: the housing that end shape is arranged; Be provided in the fixed contact on the inner bottom surface of this housing; Have the upset portion that can overturn along with temperature, at one end tight bound energy contacts with the said fixing contact or the bimetal leaf of the travelling contact that breaks away from; Overlap with the other end of this bimetal leaf form cantilever-shaped fastening in addition and be provided in fixed terminal on the inner bottom surface of above-mentioned housing,
Form peristome in the bottom of above-mentioned housing, this peristome be corresponding with the coincidence position of said fixing terminal and bimetal leaf, can carry out laser radiation from the outer bottom of housing.
Above-mentioned thermal-response switch, be preferably on the position that said fixing terminal and bimetal leaf overlap, have peristome side from above-mentioned housing towards the housing inboard, be the weld part of tapered; This weld part is formed in the thickness range of above-mentioned bimetal leaf by the said fixing terminal.
Above-mentioned thermal-response switch, best above-mentioned peristome are when above-mentioned housing molding, are arranged on the pin mark (pin is settled in an area) of the said fixing terminal guide pins on the housing bottom.
The simple declaration of accompanying drawing
Fig. 1 is the top view of expression as thermal-response switch state after lid is laid down of 1 embodiment of the present invention.
Fig. 2 is that expression thermal-response switch shown in Figure 1 is at the sectional drawing of lid being laid down the back state.
Fig. 3 is the top view of expression thermal-response switch shown in Figure 1 at the housing that is disposing fixed contact and fixed terminal of lid being laid down the back state.
Fig. 4 is the sectional drawing of expression thermal-response switch shown in Figure 1 at the housing that is disposing fixed contact and fixed terminal of lid being laid down the back state.
Fig. 5 is the ground plan at the housing that is disposing fixed contact and fixed terminal of lid being laid down the back state of expression thermal-response switch shown in Figure 1.
Fig. 6 is the top view of the bimetal leaf under fastening the travelling contact state of expression thermal-response switch shown in Figure 1.
Fig. 7 is the front view of the bimetal leaf under fastening the travelling contact state of expression thermal-response switch shown in Figure 1.
Fig. 8 is the schematic diagram of the engagement state of expression fixed terminal of the present invention and bimetal leaf.
Fig. 9 be expression of the present invention when installing to bimetal leaf in the housing, with the schematic diagram that engages operation of fixed terminal.
Figure 10 be before the expression install to bimetal leaf in the housing time, with the schematic diagram that engages operation of fixed terminal.
Specific embodiments of the invention
Below, with reference to accompanying drawing embodiments of the invention are described,
Below, Fig. 1～Fig. 9 has represented embodiments of the invention.Fig. 1 is a top view of the thermal-response switch lid being laid down the back state.Fig. 2 be expression thermal-response switch shown in Figure 1 at the sectional drawing of lid being laid down the back state.Fig. 3 is the top view at the housing that is disposing fixed contact and fixed terminal of lid being laid down the back state of expression thermal-response switch shown in Figure 1.Fig. 4 is the sectional drawing at the housing that is disposing fixed contact and fixed terminal of lid being laid down the back state of expression thermal-response switch shown in Figure 1.Fig. 5 is the ground plan at the housing that is disposing fixed contact and fixed terminal of lid being laid down the back state of expression thermal-response switch shown in Figure 1.Fig. 6 is the top view of the bimetal leaf under fastening the travelling contact state of expression thermal-response switch shown in Figure 1.Fig. 7 is the front view of the bimetal leaf under fastening the travelling contact state of expression thermal-response switch shown in Figure 1.Fig. 8 is the schematic diagram of the engagement state of expression fixed terminal of the present invention and bimetal leaf.Fig. 9 be expression of the present invention when installing to bimetal leaf in the housing, with the schematic diagram that engages operation of fixed terminal.
Among the figure, housing 1 is the case shape of making top opening with insulating material such as synthetic resin.Each following terminal is being set on the inner bottom part of this housing 1, and stretch out to foreign side from two sides of above-mentioned housing 1 end of each terminal.And support jut 1a being set at the central part of the inner bottom surface of above-mentioned housing 1, it protrudes hemispherical from the inner bottom surface of housing 1.
End at above-mentioned housing 1 also forms the OBL ditch 1b of portion, and the arm 5b that stretches out of this 1b of ditch portion and following bimetal leaf 5 is guided in combination.
Bottom at above-mentioned housing also is being provided with peristome 1c, 1d, and they arrive the inside of each following terminal from the outer bottom side.Peristome 1c, 1d are when forming in each terminal insertion in the above-mentioned housing 1, to be set at the pin mark (pin is settled in an area) of the guide pins of forming metal mould.Above-mentioned forming metal mould positions usefulness to each terminal.
The 1st terminal 2 is to make tabular with conductive metal materials such as brass.End at this 1st terminal 2 is provided with fixed contact 3, and it is that the small circular plane of showing out on the inner bottom surface by above-mentioned housing 1 constitutes; The other end at this 1st terminal 2 is provided with the 2b of splicing ear portion, and it stretches out to foreign side from the side surface part of above-mentioned housing 1, is connected with loop of other electric equipments etc.
At near the 2c of fenestra portion that is provided with the amplitude broad on above-mentioned the 1st terminal 2, the said fixing contact 3 between said fixing contact 3 and the above-mentioned splicing ear 2b of portion.The 2c of this fenestra portion be along above-mentioned the 1st terminal 2 longitudinally, on center line, form by said fixing contact 3; And on the amplitude direction of above-mentioned the 1st terminal 2, the amplitude of the above-mentioned fenestra 2c of portion is made also wideer than the periphery amplitude of said fixing contact 3.The above-mentioned fenestra 2c of portion is that the periphery with said fixing contact 3 matches and merges round its rotation feed and form.
On part on above-mentioned the 1st terminal 2, that comprise the above-mentioned fenestra 2c of portion, also be provided with rake 2d, by this rake 2d, form the structure that said fixing contact 3 is connected with the above-mentioned splicing ear 2b of portion.When being assembled to above-mentioned the 1st terminal 2 on the above-mentioned housing 1, above-mentioned rake 2d is assemblied on the inner bottom part of above-mentioned housing 1 with burying underground.
The 2nd terminal 4 forms tabular by conductive metal materials such as brass similarly.At an end of this 2nd terminal 4, make its wall thickness deflection with press etc. and form protuberance 4a, this protuberance 4a is configured for the weld portion of an end of fastening following bimetal leaf 5.The other end at this 2nd terminal 4 is provided with the 4b of splicing ear portion, and it stretches out to foreign side from the side surface part of above-mentioned housing 1, is connected with loop of other electric equipments etc.
On above-mentioned the 2nd terminal 4, between the above-mentioned protuberance 4a of fastening following bimetal leaf 5 and the above-mentioned splicing ear 4b of portion, above-mentioned protuberance 4a near be provided with the 4c of fenestra portion of amplitude broad.The 4c of this fenestra portion be along above-mentioned the 2nd terminal 4 longitudinally, on center line, form by above-mentioned protuberance 4a; And on the amplitude direction of above-mentioned the 2nd terminal 4, the amplitude of the above-mentioned fenestra 4c of portion is made also wideer than the amplitude of above-mentioned protuberance 4a.The above-mentioned fenestra 4c of portion is that the periphery with above-mentioned protuberance 4a matches and merges round its rotation feed and form.
On part on above-mentioned the 2nd terminal 4, that comprise the above-mentioned fenestra 4c of portion, also be provided with rake 4d, by this rake 4d, form the structure that the above-mentioned protuberance 4a that is used to tighten up bimetal leaf 5 is connected with the above-mentioned splicing ear 4b of portion.When being assembled to above-mentioned the 2nd terminal 4 on the above-mentioned housing 1, above-mentioned sloping portion 4d is assemblied on the inner bottom part of above-mentioned housing 1 with burying underground.
As mentioned above, because at the above-mentioned the 1st and the 2nd terminal 2,4 are provided with the above-mentioned fenestra 2c of portion, 4c, thereby when for example carrying or during assembling, even there is extraneous masterpiece to be used in the above-mentioned splicing ear 2b of portion, on the 4b, even have along bending stress of thickness of slab direction etc. and act on the 2b of these splicing ear portions, on the 4b, also can be by the above-mentioned fenestra 2c of portion, 4c disconnects this stress, therefore can relax external stress to following bimetal leaf 5, with the fastening part of travelling contact 6 and the influence of fixed contact 3, the influence that each contact portion is subjected to displacement can be reduced, thereby the stable thermal-response switch of temperature characterisitic can be made.
Owing on the part that comprises the above-mentioned fenestra 2c of portion, 4c, be provided with rake 2d, 4d, and this rake 2d, 4d be assemblied on the inner bottom part of above-mentioned housing 1 with partly burying underground, thereby the part of burying underground of the above-mentioned the 1st and the 2nd terminal 2,4 is extended; Because not increasing the profile of above-mentioned housing 1 just can be firmly fixing, thereby can be suitable for miniaturization.And can prevent that when carrying out soldering flux from invading inside.
Middle body at above-mentioned bimetal leaf 5 forms the dome-shaped upset 5a of portion that bloats, it is used to encourage inverting action, owing to form the 5a of this upset portion, thereby can keep the temperature characterisitic of above-mentioned bimetal leaf 5 infalliblely, promptly, can carry out rotary movement infalliblely according to temperature.
The other end of above-mentioned bimetal leaf 5, with the outside that tightens up the position of above-mentioned the 2nd terminal 4, form and stretching out arm 5b, it is along stretching out with the opposite side that the above-mentioned upset 5a of portion forms the position.This stretches out arm 5b is on the vertical direction of the center line that connects above-mentioned travelling contact 6 and above-mentioned the 2nd terminal 4 fastening parts, and respectively towards in-plane vis-a-vis, forms a pair of state that stretches out.
On the above-mentioned free end that stretches out arm 5b, form on the both sides of vis-a-vis two sides that arcuation bloats in conjunction with teat 5c,, just above-mentioned bimetal leaf 5 can be directed on the above-mentioned housing 1 in conjunction with the combining of the inner wall part of teat 5c and the above-mentioned housing 1 above-mentioned ditch 1b of portion by this.
At the 5a of upset portion of above-mentioned bimetal leaf 5 with stretch out and also form par 5d between the arm 5b, its as with the junction of above-mentioned the 2nd terminal 4.
Under this occasion, because the above-mentioned arm 5b that stretches out by with the fastening part of above-mentioned the 2nd terminal 4, be arranged on the formation position opposite side with the above-mentioned upset 5a of portion with extending, thereby when above-mentioned bimetal leaf 5 being assembled to 1 li of above-mentioned housing, can prevent the distortion of the 5a of upset portion of above-mentioned bimetal leaf 5, can easily assemble.
Because on the above-mentioned free end that stretches out arm 5b, form on the both sides of vis-a-vis two sides that arcuation bloats in conjunction with teat 5c, this combines with the inner wall part of the above-mentioned ditch 1b of portion of above-mentioned housing 1 in conjunction with teat 5c, thereby can suppress above-mentioned bimetal leaf 5 effectively towards the moving of gyratory directions, can improve positioning accuracy.
Lid 7 is roughly to form tabularly with insulating material such as synthetic resin, is assemblied on the peristome of above-mentioned housing 1, can prevent that dust and gas is to being provided in above-mentioned the 1st, the 2nd terminal 2,4 of above-mentioned housing 1 inside; Above-mentioned bimetal leaf 5; The influence of above-mentioned travelling contact 6 and fixed contact 3 etc.
Below, the assembling of the thermal-response switch of the present invention with said structure is described.
Earlier a strip metal plate that is provided with guide hole with predetermined distance is carried out press molding, with above-mentioned the 1st, the 2nd terminal 2,4 that forms, with methods such as embedding shapings, be embedded on the inner bottom part of above-mentioned housing 1 with being integral, a plurality of housings 1 are formed the banded ground band 11 of formation continuously.At this moment, must on the assigned position of the inner bottom surface of above-mentioned housing 1, express said fixing contact 3 really and tighten up the protuberance 4a of formation weld part of an end of above-mentioned bimetal leaf 5, can be not swingingly when being shaped owing to the resin pressure that is filled to the resin in the metal pattern chamber, guide the guide pins of usefulness, above-mentioned each terminal 2,4 bottom surface sides from above-mentioned housing 1 are directed into the inside by the terminal that in the drawings on the metal pattern of not representing (counterdie) is set, the pin mark of this guide pins makes above-mentioned peristome 1c, 1d and is formed on the bottom surface of above-mentioned housing 1.
Then, kept with pack into the par 5d of the above-mentioned bimetal leaf 5 of anchor clamps 12 absorption of bimetallic (with reference to Fig. 2, Fig. 6), make said fixing contact 3 and travelling contact 6 facing to, and under the protuberance 4a coincidence status of an end and above-mentioned the 2nd terminal 4, above-mentioned bimetal leaf 5 is assembled to 1 li of above-mentioned housing, at this moment, on the above-mentioned bimetal leaf 5, with the fastening direction opposition side of above-mentioned travelling contact 6 on, form and stretch out arm 5b, it is along stretching out with the perpendicular direction of longitudinally; Stretch out arm 5b by this and combine, above-mentioned bimetal leaf 5 is directed into 1 li of above-mentioned housing with the above-mentioned ditch 1b of portion of above-mentioned housing 1.
Be provided with baffle plate 8 at pack into the front end of anchor clamps 12 of bimetallic, under the state of bimetal leaf 5 being packed into and being kept, baffle plate 8 contacts with the par 5d of the corresponding bimetal leaf 5 in peristome 1c position of housing 1.
Then, as Fig. 8 and shown in Figure 9, open side above above-mentioned housing 1 fix and the baffle plate 8 that absorbs heat and above-mentioned bimetal leaf 5 one above the end under the contacted state when welding to bimetal leaf 5; And the laser X of formed above-mentioned peristome 1c, the welding usefulness that will be formed by laser irradiation device 13 shines on the bottom surface of said fixing terminal 4 from the bottom surface of above-mentioned housing 1, and above-mentioned bimetal leaf 5 is engaged with the protuberance 4a of said fixing terminal 4.Among the figure 14 is guides of expression assembling device, the 15th, and the pillar of assembling device, the 16th, the base of assembling device.
At this moment, as shown in Figure 8, the weld part 9 that the welding bead that is welded by laser radiation constitutes, on fixed terminal 4 and bimetal leaf 5 superposed part, inboard from the above-mentioned peristome 1c side of housing 1 towards housing 1, become the formation of tapered ground, but owing to this weld part 9 is absorbed heat by above-mentioned baffle plate 8, though thereby by said fixing terminal 4, but do not arrive the surface of above-mentioned bimetal leaf 5, can prevent to form the generation of the through hole of failure welding, the stable degree of depth that is solded into can be formed, thereby stable bond strength can be obtained.
Though in carrying out laser beam welding, dispersing of metal can be taken place with metal melting the time, but in said structure, when above-mentioned bimetal leaf 5 is engaged with said fixing terminal 4, owing to be that formed above-mentioned peristome 1c, the laser X that will weld usefulness shine on the bottom surface of said fixing terminal 4 from the bottom surface of above-mentioned housing 1, above-mentioned bimetal leaf 5 is engaged with the protuberance 4a of said fixing terminal 4, thereby in housing 1 dispersing of metal can not taken place, do not carry out it is removed the operations such as cleaning of usefulness.
Again because be that above-mentioned peristome 1c, the laser X that will weld usefulness that the bottom surface from above-mentioned housing 1 forms shines on the bottom surface of said fixing terminal 4, above-mentioned bimetal leaf 5 is engaged with the protuberance 4a of said fixing terminal 4, so can with above-mentioned bimetal leaf 5 is encased in 1 li identical operation of housing, above-mentioned bimetal leaf 5 is engaged with said fixing terminal 4, like this, can can not assemble accurately owing to conveying causes bimetal leaf 5 offsets.And can make assembly process simple, easy, can reduce cost.
Then, above-mentioned lid 7 is installed to the upper face side of above-mentioned housing 1 peristome, each thermal-response switch is cut off from the band 11 and separated, finish assembly work thus.
Below, the action of above-mentioned thermal-response switch of the present invention is described.
Under normal temperature and common serviceability temperature, above-mentioned travelling contact 6 and the said fixing contact 3 facing to configuration mutually is in contact with one another, then contact just becomes the state of connection.When for a certain reason, when temperature begins to rise from this state, the set 5a of upset portion carries out rotary movement on fastening the above-mentioned bimetal leaf 5 of above-mentioned travelling contact 6 along with the rising of temperature.At this moment, the above-mentioned travelling contact 6 that is fastened on the above-mentioned bimetal leaf 5 is driven with above-mentioned bimetal leaf 5, leave, form the state that contact disconnects from said fixing contact 3.At this moment, the above-mentioned upset 5a of portion of the above-mentioned bimetal leaf 5 that has overturn be make its bellying upset, to the direction of above-mentioned fixed contact 3, promptly, outstanding towards the direction of the inner bottom surface of above-mentioned housing 1.
And, because when temperature begins to descend from this state, and when getting back to original normal temperature, the above-mentioned upset 5a of portion of above-mentioned bimetal leaf 5 makes the 5a of upset portion recover along with decrease of temperature, towards outstanding on the contrary with the direction of said fixing contact 3, thereby above-mentioned travelling contact 6 is contacted with said fixing contact 3, and form the state that contact is switched on, return to initial state.
Because in the structure of the thermal-response switch of the invention described above, form the dome-shaped upset 5a of portion that bloats at the central portion of above-mentioned bimetal leaf 5, when overturning along with variations in temperature, it can encourage inverting action; Thereby can carry out rotary movement infalliblely.
Above-mentioned support jut 1a is being set on the inner bottom surface of above-mentioned housing 1.Therefore, when temperature descends, just in case when the above-mentioned upset 5a of portion does not overturn recovery because of temperature changes (gradually cold) gradually, because the above-mentioned upset 5a of portion supports jut 1a to contact with this, thereby above-mentioned travelling contact 6 can be held in the state that leaves with contacting of said fixing contact 3, in the time of preventing that temperature from rising, under the occasion of overturning once more, the contact chatter of travelling contact 6 and fixed contact 3 takes place.
Effect of the present invention:
As mentioned above, because thermal-response switch of the present invention has been provided with end shape housing; Be provided in Fixed contact on the inner bottom surface of this housing; Have the upset section that can overturn along with temperature, The bimetal leaf of the contact of the tight bound energy of one end and fixed contact or the travelling contact that separates; With this pair The other end of sheet metal overlaps and forms the interior end that cantilever-shaped ground was tightened up and be provided in housing Fixed terminal on the face; Coincidence part at the formation of the bottom of housing and fixed terminal and bimetal leaf Corresponding, from the outer bottom of housing, can carry out the peristome of Ear Mucosa Treated by He Ne Laser Irradiation, thereby with the sort of from Gold does not take place in the top open side of housing, irradiation laser and the structure that engages is compared in housing Genus disperses, and does not need to carry out the operations such as cleaning with its removing.
Since can one with the same processes that bimetal leaf is encased in the housing in, will pair Sheet metal and fixed terminal engage, thereby can not caused by conveying that the position of bimetal leaf is inclined to one side Move, can assemble accurately. And assembly process is become simply, easily, can reduce cost.
Because on the coincidence position of fixed terminal and bimetal leaf, the peristome from housing arranged Side towards the housing inboard, be the weld part of tapered, this weld part is by fixed terminal, but Within the thickness range of bimetal leaf, thereby can prevent that weld part from becoming failure welding Through hole can form and stable be solded into the degree of depth, thereby can obtain stable bond strength.
Because peristome is when housing molding, just is arranged on fixed terminal on the housing bottom The pin mark of guide pins, thereby on housing, need not form the peristome that other Ear Mucosa Treated by He Ne Laser Irradiation is used, Thereby make structure become simple.
Claims (3)
1, thermal-response switch is characterized in that having: the housing that end shape is arranged;
Be equipped on the fixed contact of the inner bottom surface of this housing;
Bimetal leaf, it has the travelling contact that the upset portion that can overturn along with temperature and at one end tight bound energy and said fixing contact contact or break away from; And
Fixed terminal, its overlap with the other end of this bimetal leaf form cantilever-shaped fastening in addition and be equipped on the inner bottom surface of above-mentioned housing,
In the bottom of above-mentioned housing, the coincidence position of corresponding said fixing terminal and bimetal leaf and form peristome, this peristome is can be from the outer bottom irradiating laser of housing.
2, thermal-response switch as claimed in claim 1 is characterized in that, in the position that said fixing terminal and bimetal leaf overlap, from the peristome side of above-mentioned housing towards the housing inboard, form the weld part of tapered; This weld part is formed in the thickness range of above-mentioned bimetal leaf by the said fixing terminal.
3, thermal-response switch as claimed in claim 1 or 2 is characterized in that, above-mentioned peristome is when above-mentioned housing molding, is arranged on the pin mark of the said fixing terminal guide pins on the housing bottom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000396915A JP2002197954A (en) | 2000-12-25 | 2000-12-25 | Thermal switch |
| JP396915/2000 | 2000-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1362717A true CN1362717A (en) | 2002-08-07 |
| CN1184658C CN1184658C (en) | 2005-01-12 |
Family
ID=18862126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011447842A Expired - Fee Related CN1184658C (en) | 2000-12-25 | 2001-12-25 | Thermal-response switch |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2002197954A (en) |
| KR (1) | KR100417665B1 (en) |
| CN (1) | CN1184658C (en) |
| TW (1) | TW512377B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338707C (en) * | 2001-12-28 | 2007-09-19 | Abb服务有限公司 | Components of thermostatic units and laser welding method for producing the components |
| CN101034643B (en) * | 2006-03-07 | 2011-05-25 | 打矢恒温器株式会社 | Thermostat |
| CN101271608B (en) * | 2008-04-28 | 2012-05-09 | 扬州宝珠电器有限公司 | Series connection thermosensitive temperature-sensing combined switch |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005108585A (en) * | 2003-09-30 | 2005-04-21 | Alps Electric Co Ltd | Thermally-actuated switch |
| JP2005142147A (en) * | 2003-10-15 | 2005-06-02 | Alps Electric Co Ltd | Thermally-actuated switch and its manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980945U (en) * | 1982-11-24 | 1984-05-31 | 生方 進 | thermal response relay |
| JPH04518Y2 (en) * | 1984-12-14 | 1992-01-09 | ||
| JP2001057138A (en) * | 1999-08-19 | 2001-02-27 | Alps Electric Co Ltd | Thermally actuated switch |
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2000
- 2000-12-25 JP JP2000396915A patent/JP2002197954A/en not_active Withdrawn
-
2001
- 2001-11-13 TW TW090128141A patent/TW512377B/en not_active IP Right Cessation
- 2001-12-06 KR KR10-2001-0076849A patent/KR100417665B1/en not_active IP Right Cessation
- 2001-12-25 CN CNB011447842A patent/CN1184658C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338707C (en) * | 2001-12-28 | 2007-09-19 | Abb服务有限公司 | Components of thermostatic units and laser welding method for producing the components |
| CN101034643B (en) * | 2006-03-07 | 2011-05-25 | 打矢恒温器株式会社 | Thermostat |
| CN101271608B (en) * | 2008-04-28 | 2012-05-09 | 扬州宝珠电器有限公司 | Series connection thermosensitive temperature-sensing combined switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002197954A (en) | 2002-07-12 |
| KR20020052932A (en) | 2002-07-04 |
| KR100417665B1 (en) | 2004-02-14 |
| CN1184658C (en) | 2005-01-12 |
| TW512377B (en) | 2002-12-01 |
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