CN203503565U - Electrothermal relay - Google Patents
Electrothermal relay Download PDFInfo
- Publication number
- CN203503565U CN203503565U CN201320564031.0U CN201320564031U CN203503565U CN 203503565 U CN203503565 U CN 203503565U CN 201320564031 U CN201320564031 U CN 201320564031U CN 203503565 U CN203503565 U CN 203503565U
- Authority
- CN
- China
- Prior art keywords
- guide plate
- bimetal leaf
- fixed
- spring
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910006295 Si—Mo Inorganic materials 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
The utility model discloses an electrothermal relay comprising at least one bimetallic strip and a support, one end of each bimetallic strip is fixed on a fixed column, a guide plate is arranged in the extension directions of the other ends of the bimetallic strips, the guide plate is not directly contacted with the bimetallic strips, the support is provided with a sliding groove, and the guide plate is installed in the sliding groove; and one side of the guide plate is provided with a lug, the lug is connected with one end of a spring, and the other end of the spring is fixed on the support. The telescoping direction of the spring is parallel to the length direction of the guide plate, the other side of the guide plate is provided with compensation metal sheets, the compensation metal sheets are adjacent to but not contacted with the unfixed ends of the bimetallic strips, the two ends of the guide plate are respectively provided with a usually-closed fixed contact and a usually-separated fixed contact, and the usually-separated fixed contact is provided with a reset button. The electrothermal relay is relatively simple in structure and linkage mechanisms are canceled, and therefore the electrothermal relay is not affected by linkage faults.
Description
Technical field
The utility model relates to a kind of relay, is specifically related to a kind of thermal relay.
Background technology
Relay, also claiming electric post, is a kind of electronic control device, and it has that control system claims not only input circuit and by control system but also claim output loop, conventionally be applied in automatic control circuit, it is actually a kind of " automatic switch " that removes to control larger electric current with less electric current.Therefore play the effects such as automatic adjusting, safeguard protection, change-over circuit in circuit.
Existing thermal relay is to utilize the electric current that flows into heater element to produce heat; make the bimetal leaf generation deformation of the different coefficients of expansion; when deformation reaches certain distance; just promote connecting rod action; control circuit is disconnected; thereby make contactor dead electricity, main circuit disconnects, and realizes the overload protection of motor.
In prior art, most thermal relays are all by connecting rod, to move to realize to disconnect control circuit, thereby make contactor dead electricity, and main circuit disconnects.When connecting rod breaks down, thermal relay is with regard to cisco unity malfunction.
Summary of the invention
Given this, the utility model object is to provide a kind of thermal relay, and this thermal relay is simple in structure, is difficult for breaking down.
For solving above technical problem, the technical scheme that the utility model provides is, a kind of thermal relay is provided, comprise at least one bimetal leaf and a support, this bimetal leaf one end is fixed on fixed leg, on the bearing of trend of the bimetal leaf other end, is provided with guide plate, and guide plate does not directly contact with bimetal leaf, on support, be provided with chute, described guide plate is arranged in chute; Guide plate one side is provided with projection, and projection is connected with one end of spring, and the other end of spring is fixed on support; The flexible direction of spring is parallel with the length direction of guide plate; The opposite side of guide plate is provided with compensation sheet metal, and the on-fixed end of compensation sheet metal and bimetal leaf is adjacent but do not contact, and guide plate two ends are respectively equipped with often closes fixed contact and often divides fixed contact, often divides reset button is installed on fixed contact.
Further, described compensation sheet metal is positioned at bimetal leaf bending direction one side.
Preferably, the material of described compensation sheet metal is identical with bimetal leaf.
Preferably, on described bimetal leaf, heater element is installed.
Preferably, described heater element is in parallel with bimetal leaf.
Compared with prior art, a technical scheme tool in technique scheme has the following advantages:
1, the utility model has been cancelled linkage, thereby can not be subject to the impact of connecting rod fault.
2, the utility model structure is more simple.
3, the utility model, by bimetal leaf being directly connected in main circuit or by bimetal leaf and heater element and being connected in main circuit, has strengthened the sensitivity of action.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing and a specific embodiment, describe.
Referring to Fig. 1.The described a kind of thermal relay of the present embodiment, comprises at least one bimetal leaf 3 and a support, and bimetal leaf has the metal of suitable performance or a kind of composite material that other material forms by two or more, belongs to current material.Bimetal leaf also claims thrermostatic bimetal-plate, because the thermal coefficient of expansion of each constituent element layer is different, when variations in temperature, the deformation of active layers is greater than the deformation of passive layer, thereby the integral body of bimetal leaf will be to passive layer curving, thereby the curvature of this composite material changes and produces deformation.Wherein, the coefficient of expansion is higher is called active layers; The coefficient of expansion is compared with the passive layer that is called at the end.
One end of bimetal leaf 3 is fixed on fixed leg 4, on the bearing of trend of bimetal leaf 3 other ends, is provided with guide plate 1, and in the chute of guide plate 1 rack-mount setting, guide plate 1 is slidably matched with chute.Guide plate 1 does not directly contact with bimetal leaf 3.Orientation shown in the drawings is below installed and is described, guide plate 1 top is provided with projection 6, and projection 6 is connected with one end of spring 5, and the other end of spring 5 is fixed on support; The flexible direction of spring 5 is parallel with the length direction of guide plate 1.The below of guide plate 1 is provided with compensation sheet metal 9, and the on-fixed end of compensation sheet metal 9 and bimetal leaf 3 is adjacent but do not contact.Compensation sheet metal 9 is positioned at bimetal leaf 3 bending direction one sides, and its material is identical with bimetal leaf.Guide plate 1 two ends are respectively equipped with often closes fixed contact 2 and normal minute fixed contact 8, often divides reset button 7 is installed on fixed contact 8.
For further improving the sensitivity of thermal relay described in the utility model, on bimetal leaf 3, heater element is installed.Conventional heater element is as Si-Mo rod, Elema, molybdenum filament, molybdenum plug, molybdenum electrode, ceramic heating plate, silicon-carbon element and silicon molybdenum element.This heater element is with bimetal leaf 3 access in parallel main circuit.Thermal relay during place in circuit, is not preset with certain distance between compensation sheet metal 9 and bimetal leaf 3, and under the effect of spring 5, guide plate 1 is placed in and often closes on fixed contact 2.In thermal relay place in circuit, start working, bimetal leaf 3 is increased by thermal deformation, when main circuit transships, the temperature of bimetal leaf 3 continues to rise, there is more large deformation in bimetal leaf 3, bimetal leaf 3 tops promote compensation sheet metal 9, guide plate 1 is left and often close fixed contact 2, are placed on normal minute fixed contact 8.After bimetal leaf 3 is cooling, press reset button 7, guide plate 1 is again placed in and often closes on fixed contact 2, realizes and resetting.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim limited range.For those skilled in the art, within not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. a thermal relay, comprise at least one bimetal leaf (3) and a support, this bimetal leaf (3) one end is fixed on fixed leg (4), on the bearing of trend of bimetal leaf (3) other end, be provided with guide plate (1), guide plate (1) does not directly contact with bimetal leaf (3), it is characterized in that, be provided with chute on support, described guide plate (1) is arranged in chute; Guide plate (1) one side is provided with projection (6), and projection (6) is connected with one end of spring (5), and the other end of spring (5) is fixed on support; The flexible direction of spring (5) is parallel with the length direction of guide plate (1); The opposite side of guide plate (1) is provided with compensation sheet metal (9), compensation sheet metal (9) is adjacent with the on-fixed end of bimetal leaf (3) but do not contact, guide plate (1) two ends are respectively equipped with often closes fixed contact (2) and normal minute fixed contact (8), often divides reset button (7) is installed on fixed contact (8).
2. thermal relay according to claim 1, is characterized in that, described compensation sheet metal (9) is positioned at bimetal leaf (3) bending direction one side.
3. thermal relay according to claim 1, is characterized in that, the material of described compensation sheet metal (9) is identical with bimetal leaf.
4. thermal relay according to claim 1, is characterized in that, described bimetal leaf is provided with heater element on (3).
5. thermal relay according to claim 4, is characterized in that, described heater element is in parallel with bimetal leaf (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320564031.0U CN203503565U (en) | 2013-09-11 | 2013-09-11 | Electrothermal relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320564031.0U CN203503565U (en) | 2013-09-11 | 2013-09-11 | Electrothermal relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503565U true CN203503565U (en) | 2014-03-26 |
Family
ID=50334524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320564031.0U Expired - Lifetime CN203503565U (en) | 2013-09-11 | 2013-09-11 | Electrothermal relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203503565U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489719A (en) * | 2013-09-11 | 2014-01-01 | 国家电网公司 | Thermal relay |
| CN111508782A (en) * | 2020-03-13 | 2020-08-07 | 浙江城电电气有限公司 | Thermal relay |
-
2013
- 2013-09-11 CN CN201320564031.0U patent/CN203503565U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489719A (en) * | 2013-09-11 | 2014-01-01 | 国家电网公司 | Thermal relay |
| CN103489719B (en) * | 2013-09-11 | 2016-09-21 | 国家电网公司 | A kind of thermorelay |
| CN111508782A (en) * | 2020-03-13 | 2020-08-07 | 浙江城电电气有限公司 | Thermal relay |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205793781U (en) | Controller that security performance is high | |
| CN203503565U (en) | Electrothermal relay | |
| CN205335193U (en) | Hot not trip gear that reports to police that transships of circuit breaker | |
| CN103871778A (en) | Application of memory alloy to overload release | |
| CN203491203U (en) | Temperature automatic regulating apparatus with molded case circuit breaker overload release characteristics | |
| CN103985598A (en) | Two-path output manual outage reset temperature controlled switch | |
| CN201369299Y (en) | Overload protection device of thermomagnetic-type over current tripping device | |
| CN201845723U (en) | Overload protection device of circuit breaker | |
| CN103489719A (en) | Thermal relay | |
| CN203883550U (en) | PC-class dual-power-supply change-over switch | |
| CN107768190A (en) | A kind of novel temperature control protector | |
| CN202523637U (en) | Open type temperature protector | |
| CN203503552U (en) | Electromagnetic electrothermal relay | |
| CN201845724U (en) | Circuit breaker overload protection device | |
| CN203839282U (en) | Two output type manual power interruption reset temperature controlled switch | |
| CN204516709U (en) | Breaker of plastic casing | |
| CN210629889U (en) | Heating device | |
| CN207038447U (en) | A kind of electrothermal relay with automatic protection | |
| CN203536317U (en) | High-sensitivity thermal relay | |
| CN107768189A (en) | One kind overload temperature-control protector | |
| CN202712092U (en) | Thermal trip system of air circuit breaker | |
| CN202034304U (en) | Active time delay temperature control switch | |
| CN204809123U (en) | Continuous electrical apparatus of manual regulation automatic re -setting bimetal formula heat | |
| CN205069544U (en) | Thermal element mechanism of circuit breaker | |
| CN103474302B (en) | A kind of automatic temperature control device of breaker of plastic casing overlond trip characteristic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20160921 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20160921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |