CN201421806Y - Bimetal-element temperature control switch - Google Patents
Bimetal-element temperature control switch Download PDFInfo
- Publication number
- CN201421806Y CN201421806Y CN2009200549475U CN200920054947U CN201421806Y CN 201421806 Y CN201421806 Y CN 201421806Y CN 2009200549475 U CN2009200549475 U CN 2009200549475U CN 200920054947 U CN200920054947 U CN 200920054947U CN 201421806 Y CN201421806 Y CN 201421806Y
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- China
- Prior art keywords
- movable contact
- control switch
- bimetal leaf
- fixed
- contact
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Abstract
The utility model discloses a bimetal-element temperature control switch, comprising a metal bracket, a movable contact, a static contact, an insulating body, a bimetal element, a movable contact sheet and a static contact sheet; the static contact is fixed at one end of the static contact sheet, the other end of the static contact sheet penetrates through the insulating body, the metal bracket penetrates through the insulating body, the movable contact is fixed at the end part of the movable contact sheet, the other end of the movable contact sheet is fixed on the metal bracket; the bimetal-element temperature control switch is characterized in that: a space is arranged between the bimetal elements and the movable contact sheet, the movable contact acts under the driving of the movable contact sheet when the temperature of the bimetal elements is raised to the operating temperature. The bimetal-element temperature control switch can effectively improve the temperature parameter precision of the bimetal-element temperature control switch and can ensure the stability of the parameters.
Description
Technical field
The utility model relates to a kind of control switch of power supply, is a kind of double-metal sheet type temp control switch specifically.
Background technology
Open type double-metal sheet type temp control switch, its principle is: after bimetal leaf is heated deformation can take place, utilize the deformation of bimetal leaf to connect circuit.Bimetal leaf is to utilize bimetal leaf to produce the element of distortion when temperature change, usually be formed by stacking by the different alloy of two-layer thermal coefficient of expansion, wherein, the coefficient of expansion is bigger is called active layers, the coefficient of expansion is less is called passive layer, the material of active layers mainly contains manganin manganin alloy, nichrome, nicalloy and nickel or the like, and the material of passive layer mainly is a dilval, and nickel content is 34～50%.Because the difference of expansion of metal coefficient, when temperature changes, the deformation of active layers is greater than the deformation of passive layer, thereby the integral body of bimetal leaf will moment to passive layer one lateral bending song, produce deformation, this immediate set is called " action " in temp control switch, and make its " action " needed temperature, then be called " temperature parameter " of temp control switch.Open type double-metal sheet type temp control switch is installed in a certain location to bimetal leaf exactly, in case " action " takes place bimetal leaf on this position, circuit is connected.In the existing technology, thereby bimetal leaf changes the force direction of movable contact spring by force under the normal temperature state disconnect circuit, after the bimetal leaf temperature distortion, discharge movable contact spring, the contact of dynamic and static contact, circuit is connected, such temp control switch generally is that bimetal leaf and movable contact spring are wholely set, and the factor that influences temperature sense so just has two, is difficult to during making hold; Be exactly in addition merely bimetal leaf as movable contact spring, movable contact spring is bending back and forth, easy deformation, thereby influence the precision of temperature sense.
Summary of the invention
The purpose of this utility model provides a kind of precision that can effectively improve temperature sense, and temperature is controlled accurate double-metal sheet type temp control switch.
The purpose of this utility model is achieved through the following technical solutions.
A kind of double-metal sheet type temp control switch, comprise metallic support, moving contact, fixed contact, insulator, bimetal leaf, movable contact spring, static contact, fixed contact is fixed on an end of static contact, the other end of static contact passes insulator, metallic support passes insulator, moving contact is fixed on the end of movable contact spring, the other end of movable contact spring is fixed on the metallic support, it is characterized in that: be provided with between described bimetal leaf and the movable contact spring at interval, moving contact moves under the drive of movable contact spring when the bimetal leaf temperature is elevated to operating temperature.
Described bimetal leaf is positioned at the below of movable contact spring, and is fixed on the metallic support.
The lower plane of described movable contact spring is provided with two projectioies, and the distance between the center of two projectioies equates or be slightly larger than the length of bimetal leaf.
Described metallic support is parallel with static contact and be provided with at interval
Described fixed contact be positioned at moving contact directly over.
Described bimetal leaf is positioned at the top of movable contact spring.
The utility model compared with prior art has the following advantages:
Be provided with between the utility model bimetal leaf and the movable contact spring at interval, that is to say that the bimetal leaf and the movable contact spring that are used for control switch are that branch is arranged, thereby the factor that influences temperature sense just has only one, when making, be not difficult like this to hold, also overcome simultaneously simple bimetal leaf as movable contact spring, movable contact spring bending easy deformation back and forth and influence the precision of temperature sense, it is the decision that temperature sense only is subjected to bimetal leaf, at " action " preceding bimetal leaf without any load, its temperature parameter is more accurate, and can not drift about, so temperature sense is sensitive more, can improve the temperature control accuracy effectively.
In addition, fixed contact be positioned at moving contact directly over, the pressure of promptly dynamic and static contact contact is from bimetal leaf, contact pressure is bigger, the contact resistance of switch is littler, circuit is more unimpeded; Because the pressure of dynamic and static contact contact is from bimetal leaf, as long as bimetal leaf also can " move ", then temp control switch can also operate as normal, and " action " of bimetal leaf all is more than tens thousand of times, so improved the double-metal sheet type temp control switch to a great extent, particularly the useful life of double-metal sheet type open type temp control switch.
Description of drawings
Fig. 1 is the utility model double-metal sheet type temp control switch action pre-structure schematic diagram;
Fig. 2 is the utility model double-metal sheet type temp control switch action back structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model double-metal sheet type temp control switch is described in further detail.
As Fig. 1, shown in Figure 2, the utility model double-metal sheet type temp control switch, comprise metallic support 1, moving contact 2, fixed contact 3, insulator 4, bimetal leaf 5, movable contact spring 7, static contact 6, fixed contact 3 is fixed on an end of static contact 6, the other end of static contact 6 passes insulator 4, bimetal leaf 5 is fixed on the metallic support 1 and with movable contact spring 7 and is provided with at interval, metallic support 1 and static contact 3 are parallel and pass insulator 4 at interval, moving contact 2 contacts with fixed contact 3 when bimetal leaf 5 temperature are elevated to the operating temperature of setting, fixed contact 3 be positioned at moving contact 2 directly over.Lower plane at movable contact spring 7 is provided with two projectioies i.e. projection 71, projection 72, and figure protrusions 72 can be that moving contact 2 bottoms protrusion forms, and can certainly be welded in addition as projection 71.Distance between the center of two projectioies equates or is slightly larger than the length of bimetal leaf, and protruding in other words 71, protruding 72 is corresponding with the two ends of bimetal leaf 5 respectively.
Moving contact 2 is arranged on the end of bimetal leaf 5 by movable contact spring 7, and an end of movable contact spring 7 is fixed on the metallic support 1, and the other end is vacant state, and moving contact 2 is fixed on the free end of movable contact spring 7, and bimetal leaf 5 is positioned at movable contact spring 7 belows.Comply with bimetal leaf 5 self characteristics, without any load, movable contact spring 7 is without any force direction at " action " preceding bimetal leaf 5.When temperature arrived " action " temperature of bimetal leaf 5, movable contact spring 7 was propped up in bimetal leaf 5 distortion, thereby made moving contact 2, fixed contact 3 contacts, and circuit is connected.Wherein bimetal leaf 5 and distance between the movable contact spring 7 are that bimetal leaf 5 " action " back brace plays movable contact spring 7 moving contact 2, fixed contact 3 are contacted, and the pressure of contact is from bimetal leaf.
When bimetal leaf is positioned at the movable contact spring top, can make the closed type temp control switch.Wherein static contact 6 can also be replaced with button battery, and a face of battery is to follow the moving contact of temperature detect switch (TDS) to contact, and at this moment, battery just becomes the combining structure of static contact 6 and fixed contact 3, to realize the application's same effect.
Claims (7)
1, a kind of double-metal sheet type temp control switch, comprise metallic support, moving contact, fixed contact, insulator, bimetal leaf, movable contact spring, static contact, fixed contact is fixed on an end of static contact, the other end of static contact passes insulator, metallic support passes insulator, moving contact is fixed on the end of movable contact spring, the other end of movable contact spring is fixed on the metallic support, it is characterized in that: be provided with between described bimetal leaf and the movable contact spring at interval, moving contact moves under the drive of movable contact spring when the bimetal leaf temperature is elevated to operating temperature.
2. double-metal sheet type temp control switch according to claim 1 is characterized in that: described bimetal leaf is positioned at the below of movable contact spring, and is fixed on the metallic support.
3. double-metal sheet type temp control switch according to claim 2 is characterized in that: the lower plane of described movable contact spring is provided with two projectioies, and the distance between the center of two projectioies equates or be slightly larger than the length of bimetal leaf.
4. according to claim 2 or 3 described double-metal sheet type temp control switchs, it is characterized in that: described metallic support is parallel with static contact and be provided with at interval
5. double-metal sheet type temp control switch according to claim 4 is characterized in that: described fixed contact be positioned at moving contact directly over.
6. double-metal sheet type temp control switch according to claim 1 is characterized in that: described bimetal leaf is positioned at the top of movable contact spring.
7. double-metal sheet type temp control switch according to claim 1 is characterized in that: described moving contact directly welds or is riveted on the bimetal leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200549475U CN201421806Y (en) | 2009-04-20 | 2009-04-20 | Bimetal-element temperature control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200549475U CN201421806Y (en) | 2009-04-20 | 2009-04-20 | Bimetal-element temperature control switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421806Y true CN201421806Y (en) | 2010-03-10 |
Family
ID=41808467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200549475U Expired - Fee Related CN201421806Y (en) | 2009-04-20 | 2009-04-20 | Bimetal-element temperature control switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421806Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121964A (en) * | 2010-12-03 | 2011-07-13 | 滁州胜利电器有限公司 | Method for detecting sintering of switch contact of temperature controller |
| JP7397815B2 (en) | 2021-01-07 | 2023-12-13 | ボーンズ株式会社 | Thermal switching elements and electrical circuits |
-
2009
- 2009-04-20 CN CN2009200549475U patent/CN201421806Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121964A (en) * | 2010-12-03 | 2011-07-13 | 滁州胜利电器有限公司 | Method for detecting sintering of switch contact of temperature controller |
| JP7397815B2 (en) | 2021-01-07 | 2023-12-13 | ボーンズ株式会社 | Thermal switching elements and electrical circuits |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20130420 |