CN203562367U

CN203562367U - Temperature switch

Info

Publication number: CN203562367U
Application number: CN201320695750.6U
Authority: CN
Inventors: 杨玉岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-06
Filing date: 2013-11-06
Publication date: 2014-04-23
Anticipated expiration: 2023-11-06

Abstract

A temperature switch includes a pedestal, and a conductive mechanism and a temperature control mechanism that are arranged on the pedestal. The conductive mechanism includes a first conductive sheet, a second conductive sheet, a conductive elastic sheet positioned in an accommodation chamber of the pedestal, a conductive combination rod electrically connected with the first conductive sheet and the conductive elastic sheet, a fixing conductive sheet that is separable and abuts against the conductive elastic sheet, and a safety unit. The safety unit has a conductive elastic supporting stand and a temperature control deformation rod that holds the conductive elastic supporting stand to make the conductive elastic supporting stand electrically connected with the fixing conductive sheet and the second conductive sheet. If the temperature control deformation rod is affected by ambient temperature to be bent and deform, the conductive elastic supporting stand will restore and be separated from one of the second conductive sheet and the fixing conductive sheet to cut off power. The above structural improvement enables the power-off reliability to be improved.

Description

Temperature switch

Technical field

The utility model relates to a kind of switch, particularly relates to the temperature switch that a kind of temperature by induction is cut off the power supply of electric equipment products.

Background technology

For example: the existing electric equipment products of water dispenser, coffee machine, electric iron, hair-dryer etc. in design; all to utilize heater to heat; the electric equipment products of this type are in order to keep constant temperature; and avoid heater extremely to cause the danger in use, conventionally can be at electric equipment products installing temperature switch and Thermal Cutoffs.Although previous designs can be guaranteed safety in utilization, in the limited space of electric equipment products, install two elements, more inconvenient in assembling.Consult Fig. 1,2, in order to improve aforesaid drawbacks, applicant once applied for No. 201318020 patent of invention of TaiWan, China publication number, the temperature switch 1 that this patent of invention provides and a heater element 10 against, and be electrically connected to two electric wires 11, it comprises a pedestal 12, and is arranged on a conductive mechanism on this pedestal 12 13, a temperature control mechanism 14.

This pedestal 12 comprises a body 121, and one be arranged on these body 121 tops and jointly define the lid 123 of a room 122 with this body 121, and this lid 123 has a spacing slotting road 124.And this conductive mechanism 13 comprises the fixedly conducting rod 133 that two 131,132, one of conducting strips that are electrically connected to described electric wire 11 are respectively arranged on this body 121 and are electrically connected to this conducting strip 131, the electroconductive elastic sheet 135 in a room 122 that is arranged on this pedestal 12 by a conjunction 134, and two compartment of terrains are inserted on this body 121 and the temperature fuse 136 being electrically connected to this conducting strip 132 and this electroconductive elastic sheet 135.And this temperature control mechanism 14 comprises that one defines 142, temperature-sensitive control wafers 143 that are arranged in this deformation space 141 of temperature-sensitive lid of a deformation space 141 jointly with this lid 123, and an interlock control lever 144 that is located in the spacing slotting road 124 of this lid 123, this interlock control lever 144 is shored between this temperature-sensitive control wafer 143 and this electroconductive elastic sheet 135.

Under normal condition, be subject to pressing down of this temperature-sensitive control wafer 143, this interlock control lever 144 this electroconductive elastic sheet 135 is pressed down and and these fixing conducting rod 133 butts, now electric current can pass through described conducting strip 131,132, this fixedly conducting rod 133, this electroconductive elastic sheet 135, and described temperature fuse 136.When this heater element 10 arrives the temperature of setting, this temperature-sensitive control wafer 143 can flexural deformations as shown in Fig. 2 chain-dotted line, now have that flexible electroconductive elastic sheet 135 will flick and with this fixedly separated and power-off of conducting rod 133.If but there is undesired high temperature, and this temperature-sensitive control wafer 143 or this electroconductive elastic sheet 135 are while losing reset function, the described temperature fuse 136 that will fuse of ambient temperature around, cuts off the electric current between this conducting strip 132 and this electroconductive elastic sheet 135 by the cooperation of aforementioned components.

Although aforementioned patent of invention can reach the object of insurance power-off, but but find through the actual test of applicant, when described temperature fuse 136 by the process of high temperature melting in, because described temperature fuse 136 is that shaft-like support is vertical, therefore, if melt thoroughly not, or described temperature fuse 136 is while still having filament to involve between this conducting strip 132 and this electroconductive elastic sheet 135, just may produce the insecure problem of power-off.

Summary of the invention

The purpose of this utility model is to provide a kind of temperature switch that can improve power-off reliability.

Temperature switch of the present utility model is electrically connected to first electric wire and second electric wire, and comprise: a pedestal, a conductive mechanism and a temperature control mechanism, this pedestal comprises a body, and one define the lid of a room jointly with this body, and this conductive mechanism comprises first conducting strip being electrically connected to this first electric wire, second conducting strip being electrically connected to this second electric wire, an electroconductive elastic sheet that is positioned at the room of this pedestal, a conduction connecting rod that is electrically connected to this first conducting strip and this electroconductive elastic sheet, one separably with the fixed-conductive film of this electroconductive elastic sheet butt, an and security unit, this security unit has a conduction bullet support seat, and one shored this conduction bullet support seat and make it be electrically connected to the temperature control deformed rod of this fixed-conductive film and this second conducting strip.When this temperature control deformed rod is subject to ambient temperature effect and during flexural deformation, this conduction bullet support seat can be separated with one of them of this second conducting strip and this fixed-conductive film.And this temperature control mechanism is controlled this electroconductive elastic sheet with sensing temperature and is separated or butt with this fixed-conductive film.

Temperature switch described in the utility model, the conduction bullet support seat of this security unit has the bullet support wall at two intervals, and a bullet being connected between described bullet support wall connects wall, under the state of not shored at this security unit, a reset height of this conduction bullet support seat is less than the distance between this second conducting strip and this fixed-conductive film, and when this temperature control deformed rod is shored between the described bullet support wall at this conduction bullet support seat, shore the distance highly equaling between this second conducting strip and this fixed-conductive film for one of this conduction bullet support seat.

Temperature switch described in the utility model, this conductive mechanism also comprises the obstruct insulation spacer that a slice is pressed against this fixed-conductive film top and is made by electrically non-conductive material, and one is combined in the conjunction on this pedestal by this obstruct insulation spacer, this fixed-conductive film and this second conducting strip.

Temperature switch described in the utility model, the body of this pedestal have a diapire, surrounding wall around this diapire, one by this diapire up outstanding convex, one run through this diapire and this convex the fixing hole passing for this conjunction, one from this fixing hole, give prominence to and be centered around the barrier ring of the conjunction of this conductive mechanism around, and a hole that is installed in of running through this convex and this diapire, and being arranged on this, this security unit is installed in hole.

Temperature switch described in the utility model, the lid of this pedestal has a spacing slotting road, and this temperature control mechanism comprises that a lid is located at the temperature-sensitive lid of this lid top, deformation space, a temperature-sensitive control wafer being placed in this deformation space between this temperature-sensitive lid and this lid, and in a spacing slotting road that is plugged in this lid and drive this electroconductive elastic sheet and this fixed-conductive film butt or separated interlock control lever because this temperature-sensitive control wafer is out of shape.

The utility model beneficial effect is: utilize this temperature control deformed rod to shore this conduction bullet support seat, and this temperature control deformed rod run into higher than set ambient temperature time bending design, can guarantee that this conduction bullet support seat resets and power-off, to reach the reliable object of power-off.

Accompanying drawing explanation

Fig. 1 is the three-dimensional exploded view of No. 201318020 patent of invention of TaiWan, China publication number;

Fig. 2 is the combination cross-sectional schematic of the patent of invention of Fig. 1;

Fig. 3 is the three-dimensional exploded view of a preferred embodiment of the utility model temperature switch;

Fig. 4 is a partial top view of this preferred embodiment, omits a temperature control mechanism and a lid of this temperature switch;

Fig. 5 is a cross-sectional schematic of getting along V-V line in Fig. 4, omits this security unit;

Fig. 6 is a cross-sectional schematic of getting along VI-VI line in Fig. 4, and in figure, this temperature switch position is at an on-position;

Fig. 7 is the cross-sectional schematic of a similar Fig. 6, and in figure, this temperature switch position is a de-energized.

Embodiment

Below in conjunction with drawings and Examples, the utility model is elaborated.

Consult Fig. 3,4,5, a preferred embodiment of the utility model temperature switch 20 is applicable to being arranged in an electric equipment products (not shown), and contact with a heater element 21 of these electric equipment products, while and first electric wire 22 and second electric wire 23 are electrically connected to, this temperature switch 20 comprises: a pedestal 3, and be arranged on a conductive mechanism on this pedestal 34, a temperature control mechanism 5.

The pedestal 3 of the present embodiment comprises a body 31 of being made by pottery or plastic insulation exotic material, and one defines the lid 32 of a room 30 jointly with this body 31.This body 31 have a diapire 311, one around this diapire 311 and up outstanding surrounding wall 312, one by this diapire 311 up outstanding and with convex in succession of this surrounding wall 312 313, one directly to the fixing hole 314, one that run through this convex 313 and this diapire 311 by this convex 313 from this fixing hole 314 outstanding barrier ring 315 up around, and one run through this convex 313 and this diapire 311 be installed in hole 316, this lid 32 has a spacing slotting road 321 that is positioned at central authorities.

This conductive mechanism 4 of the present embodiment comprises first conducting strip 41 being electrically connected to this first electric wire 22, second conducting strip 42 being electrically connected to this second electric wire 23, an electroconductive elastic sheet 40 that is positioned at the room 30 of this pedestal 3, one is electrically connected to and is arranged on the conduction connecting rod 43 on the diapire 311 of this pedestal 3 with the first conducting strip 41 and this electroconductive elastic sheet 40, one can with these electroconductive elastic sheet 40 butts or separated fixed-conductive film 44, the obstruct insulation spacer 45 that a slice is pressed against these fixed-conductive film 44 tops and is made by electrically non-conductive material, fixing hole 314 through this pedestal 3 and this is intercepted to insulation spacer 45, this fixed-conductive film 44 and this second conducting strip 42 are arranged on the conjunction 46 on pedestal 3, an and security unit 47 in hole 316 that is installed in that is arranged on this pedestal 3.This barrier ring 315 is around the conjunction 46 of this conductive mechanism 4.

This electroconductive elastic sheet 40 has an elasticity arm 401, and this elasticity arm 401 has the travelling contact 402 of its end of vicinity, and one be positioned in the middle of and outstanding pressure spot 403 up.And this fixed-conductive film 44 has a travelling contact with this electroconductive elastic sheet 40 corresponding fixed contact 441 Shang Xia 402.This security unit 47 has the conduction bullet support seat 471 that a tool inside contracts elastic force, an and temperature control deformed rod 472, this conduction bullet support seat 471 have two between the upper and lower every bullet support wall 473, and a bullet being connected between described bullet support wall 473 connects wall 474, the bullet support wall 473 of this conduction bullet support seat 471 connects one end of wall 474 by this bullet of vicinity, and little by little opposite tilt is close.This temperature control deformed rod 472 is to be made by a kind of bending deformed alloy material that is heated, and its deformability temperature needs according to use occasion and determine, and has two and can be respectively support with the described bullet of this conduction bullet support 471 rod end 475 that wall 473 leans.

The temperature control mechanism 5 of the present embodiment is controlled this electroconductive elastic sheet 40 with the temperature of the electric equipment products of sensing and is separated or butt with this fixed-conductive film 44, it comprises that deformation space between this temperature-sensitive lid 51 and this lid 32 of 51, one, a temperature-sensitive lid of being made and covered lid 32 tops that are located at this pedestal 3 by Heat Conduction Material 52, one are liftably inserted in the spacing slotting road 321 of this lid 32 and the interlock control lever 53 of being made by athermanous ceramic material, and one is placed in the temperature-sensitive control wafer 54 that also can be out of shape when being heated in this deformation space 52.

Consult Fig. 3,5,6, when the temperature switch position of the present embodiment is during at an on-position shown in Fig. 5,6, this temperature-sensitive control wafer 54 is upper arcuations, now, the travelling contact 402 of the elasticity arm 401 of this electroconductive elastic sheet 40 is electrically connected to the fixed contact with this fixed-conductive film 44 441, and the temperature control deformed rod 472 of this security unit 47 is shored on 473, the described bullet support wall of this conduction bullet support seat 471, now shore highly L1 and equal the distance W between this second conducting strip 42 and this fixed-conductive film 44 for one of this conduction bullet support seat 471.Under this state, this security unit 47 is electrically connected to this fixed-conductive film 44 and this second conducting strip 42, and electric current can support seat 471 at this first conducting strip 41, this electroconductive elastic sheet 40, this fixed-conductive film 44, this conduction bullet, and circulation between this second conducting strip 42.

When the heating-up temperature of this heater element 21 is during higher than set point, this temperature-sensitive control wafer 54 will be as shown in Fig. 5 chain-dotted line state arc recessed, and the elasticity arm of this interlock control lever 53 and this electroconductive elastic sheet 40 is pushed away for 401 times, make the separated and power-off of the travelling contact 402 of this electroconductive elastic sheet 40 and the fixed contact 441 of this fixed-conductive film 44.And when the temperature of this heater element 21 is reduced to the low spot of setting, this temperature-sensitive control wafer 54 will return to the state of Fig. 5 solid line, and make the state of these temperature switch 20 Power resumptions.

Consult Fig. 3,5,7, when the temperature switch 20 of the present embodiment in use, the temperature that this heater element 21 produces is higher than set point, but the temperature-sensitive control wafer 54 of this temperature control mechanism 5 cannot be out of shape because of fault, or while there is undesired bonding phenomenon with the fixed contact of this fixed-conductive film 44 441 in the travelling contact 402 of this electroconductive elastic sheet 40, electric current can continue to circulate between this first electric wire 22 and this second electric wire 23, and this phenomenon can cause ambient temperature around to raise.And when the upborne ambient temperature of temperature control deformed rod 472 of this security unit 47 melts bending deformation, the bullet support wall 473 of the conduction bullet support seat 471 of originally being shored by this temperature control deformed rod 472 will elastic reset, because a reset height L2 of this conduction bullet support seat 471 is less than the distance W of 44 of this second conducting strip 42 and this fixed-conductive films, the power-off therefore these conduction bullet support seat 471 meetings are separated with this second conducting strip 42 or this fixed-conductive film 44, that is to say, this temperature switch 20 is transformed into the on-position by Fig. 6 a de-energized of Fig. 7, to reach the object of insurance power-off.

From illustrating above, this temperature switch 20 of the utility model utilizes this temperature control deformed rod 472 to shore this conduction bullet support seat 471, make its bullet support wall 473 under normal condition, can be electrically connected to this second conducting strip 42 and this fixed-conductive film 44, and when ambient temperature is too high, by these temperature control deformed rod 472 temperature distortions, and the elastic reset of this conduction bullet support seat 471, can reach the object of power-off.Due at this temperature switch 20 when abnormal state causes ambient temperature too high, this conduction bullet support seat 471 is to carry out power-off by elastic reset own, therefore the utility model novel structure not only also has the reliable effect of power-off.Additional disclosure be, the utility model is given prominence to this barrier ring 315 around at the fixing hole 314 of the body 31 of this pedestal 3, the outer ring surface that can guarantee this conjunction 46 not can with the inner peripheral surface of this fixed-conductive film 44 against, and this intercepts the design of insulation spacer 45, also can prevent this conjunction 46 and this fixed-conductive film 44 against, but the utility model in design, if this conjunction 46 adopts electrically non-conductive material to make, also can reach identical effect, therefore the utility model not take, to have this barrier ring 315 and this obstruct insulation spacer 45 be necessary.

Claims

1. a temperature switch, be electrically connected to first electric wire and second electric wire, and comprise: a pedestal, an and conductive mechanism, this pedestal comprises a body, and one define the lid of a room jointly with this body, and this conductive mechanism comprises first conducting strip being electrically connected to this first electric wire, second conducting strip being electrically connected to this second electric wire, an electroconductive elastic sheet that is positioned at the room of this pedestal, a conduction connecting rod that is electrically connected to this first conducting strip and this electroconductive elastic sheet, one separably with the fixed-conductive film of this electroconductive elastic sheet butt, an and security unit, and also comprising one, this temperature switch with sensing temperature, controls that this electroconductive elastic sheet separates with this fixed-conductive film or the temperature control mechanism of butt,

It is characterized in that: this security unit has a conduction bullet support seat, and one shored this conduction bullet support seat and make it be electrically connected to the temperature control deformed rod of this fixed-conductive film and this second conducting strip, when this temperature control deformed rod is subject to ambient temperature effect and during flexural deformation, this conduction bullet support seat can be separated with one of them of this second conducting strip and this fixed-conductive film.

2. temperature switch according to claim 1, it is characterized in that: the conduction bullet support seat of this security unit has the bullet support wall at two intervals, and a bullet being connected between described bullet support wall connects wall, under the state of not shored at this security unit, a reset height of this conduction bullet support seat is less than the distance between this second conducting strip and this fixed-conductive film, and when this temperature control deformed rod is shored between the described bullet support wall at this conduction bullet support seat, shore the distance highly equaling between this second conducting strip and this fixed-conductive film for one of this conduction bullet support seat.

3. temperature switch according to claim 2, it is characterized in that: this conductive mechanism also comprises the obstruct insulation spacer that a slice is pressed against this fixed-conductive film top and is made by electrically non-conductive material, and one is combined in the conjunction on this pedestal by this obstruct insulation spacer, this fixed-conductive film and this second conducting strip.

4. temperature switch according to claim 3, it is characterized in that: the body of this pedestal have a diapire, surrounding wall around this diapire, one by this diapire up outstanding convex, one run through this diapire and this convex the fixing hole passing for this conjunction, one from this fixing hole, give prominence to and be centered around the barrier ring of the conjunction of this conductive mechanism around, and a hole that is installed in of running through this convex and this diapire, and being arranged on this, this security unit is installed in hole.

5. temperature switch according to claim 4, it is characterized in that: the lid of this pedestal has a spacing slotting road, and this temperature control mechanism comprises that a lid is located at the temperature-sensitive lid of this lid top, deformation space, a temperature-sensitive control wafer being placed in this deformation space between this temperature-sensitive lid and this lid, and in a spacing slotting road that is plugged in this lid and drive this electroconductive elastic sheet and this fixed-conductive film butt or separated interlock control lever because this temperature-sensitive control wafer is out of shape.