CN203536316U - Thermal relay - Google Patents
Thermal relay Download PDFInfo
- Publication number
- CN203536316U CN203536316U CN201320432041.9U CN201320432041U CN203536316U CN 203536316 U CN203536316 U CN 203536316U CN 201320432041 U CN201320432041 U CN 201320432041U CN 203536316 U CN203536316 U CN 203536316U
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- thermal relay
- contact
- slide block
- boss
- sliding tray
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Abstract
The practical relates to a thermal relay, which comprises a heat induction device, a lever transmission device and a contact system. The lever transmission device and the contact system are respectively placed on the front and back surfaces of a support. The contact system comprises a single-breakpoint contact device and the single-breakpoint contact device is composed of a first connection terminal, a second connection terminal with a static contact boss, and a movable reed. The first connection terminal is riveted to one end of the movable reed. The other end of the movable reed is provided with a movable contact boss. The movable contact boss and the static contact boss are pairwise opposite to each other. According to the technical scheme of the utility model, the movable reed to be accessed to a control circuit and the connection terminal are fixed together in a riveted manner instead of the original slot fixation mode in the prior art, so that the contact resistance is greatly reduced. Meanwhile, the electrical performance of a contact closed circuit is improved.
Description
Technical field
The utility model relates to a kind of thermal relay.
Background technology
Thermal relay is to produce heat by the electric current that flows into heating element, makes the bimetal leaf generation deformation of the different coefficients of expansion, when deformation reaches certain distance, just promotes push rod action, the low-voltage variation electrical equipment that control circuit is disconnected.Wherein, the junction block of thermal relay access control circuit and the path that is positioned at thermal relay inside configuration have affected the electric property of control circuit to a great extent.In the internal structure of existing thermal relay, the fixed slot on junction block is inserted in one end of movable contact spring, and the other end of movable contact spring is connected with junction block through extension spring.Due to the connected mode of movable contact spring and junction block employing insertion, contact resistance is large, and the pressure drop on contact resistance is high, thereby the heat that contact point discharges is many, and when temperature rises to certain limit, contact point will destroy, and rapid spread.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, provides between a kind of movable contact spring and junction block and adopts riveted to connect, and the contact resistance of inside contact path is little, and release heat is few, has the thermal relay of more stable electric property.
For achieving the above object, the utility model adopts a kind of like this thermal relay, comprise heat induction device, rod gear and contact system, described rod gear and described contact system are positioned over respectively the front and back of bearing, described contact system comprises single-break contact device, described single-break contact device comprises the first junction block, the second junction block and the movable contact spring with fixed contact boss, one end riveted joint of the first described junction block and described movable contact spring, the other end of described movable contact spring has moving contact boss, described moving contact boss is relative between two with described fixed contact boss.Compared with the prior art, the beneficial effects of the utility model are embodied in: because the mode that movable contact spring and the junction block employing of access control circuit are riveted is fixed, abandon original slot fixed form, can greatly reduce contact resistance, improve the electric property of contact vias.
Especially, described heat induction device comprises conducting rod, the heating element being connected with described conducting rod by copper litz wire, and bimetal leaf, one end of described bimetal leaf is connected with described heating element spot welding, the other end of described bimetal leaf drives push rod to do horizontal motion, and described push rod acts on slide block through described rod gear, and described slide block is for stirring the contact system at the back side of described bearing.By bimetal leaf spot welding is connected to heating element, the conduction efficiency of heat is high, and the space loss of heat is little, and heat is threaded off and reacted sensitiveer, can greatly expand the setting range of heating current.
Especially, described thermal relay comprises test button, the below of described test button is provided with briquetting, described briquetting below compression the first spring, described briquetting is provided with pressure head, described slide block is provided with swash plate, and described pressure head and described swash plate coordinate the slide block level described in promoting to move right.When pressing test button, briquetting is descending, and slide block swings drive Contact Breaking/Making Operations to the right, and the test function of thermal relay and the design of slide block are combined closely, compact conformation, reliable in action.
Especially, described thermal relay comprises reset button, and the below of described reset button arranges the second spring, and the end of described reset button is provided with incline bench, described slide block is provided with lug boss, and described lug boss can move on described incline bench.When pressing reset button, lug boss slides on the inclined-plane of incline bench, and after the barrier effect of lug boss is removed, slide block swings band moving contact left and resets, and system configuration is simple, has also expanded reset function.
Especially, described thermal relay comprises reset mode selection knob, and described reset mode selects knob to be provided with stopper section, and described bearing is provided with sliding tray, and described slide block moves in described sliding tray, and described stopper section can pass in and out described sliding tray.When stopper section enters sliding tray, stopped that the left lateral of slide block resets, thermal relay cannot automatically reset, and system configuration is simple, perfect in shape and function.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model embodiment thermal relay.
In figure: 1, housing; 11, A phase heat induction device; 111, conducting rod; 112, copper litz wire; 113, heating element; 114, bimetal leaf; 12, B phase heat induction device; 13, C phase heat induction device; 2, thermoinduction mechanism chamber; 3, push rod; 4, the first lever; 5, the second lever; 6, the 3rd lever; 7, bearing; 8, slide block; A1, swash plate; A2, pressure head; A3, test button; C1, reset mode are selected knob; C2, stopper section; D1, reset button; D2, lug boss; D3, incline bench.
Embodiment
As shown in Figure 1, a kind of thermal relay, comprise heat induction device, rod gear and contact system, rod gear and contact system are positioned over respectively the front and back of bearing 7, contact system comprises single-break contact device, and single-break contact device comprises the first junction block, has the second junction block and the movable contact spring of fixed contact boss, one end riveted joint of the first junction block and movable contact spring, the other end of movable contact spring has moving contact boss, and moving contact boss is relative between two with fixed contact boss.
Wherein, heat induction device comprises conducting rod 111, the heating element 113 being connected with conducting rod 111 by copper litz wire 112, and bimetal leaf 114, one end of bimetal leaf 114 is connected with heating element 113 spot welding, the other end of bimetal leaf 114 drives push rod 3 to do horizontal motion, and push rod 3 acts on slide block 8 through rod gear, and slide block 8 is for stirring the contact system at the back side of bearing 7.Wherein, regulations and parameters transmission device comprises the first lever 4, the second lever 5 and the 3rd lever 6.
Thermal relay comprises test button A3, and the below of test button A3 is provided with briquetting, briquetting below compression the first spring, and briquetting is provided with pressure head A2, and on slide block, 8 are provided with swash plate A1, and pressure head A2 and swash plate A1 coordinate promotion slide block 8 levels to move right.
Thermal relay comprises reset button D1, and the below of reset button D1 arranges the second spring, and the end of reset button D1 is provided with incline bench D3, and slide block 8 is provided with lug boss D2, and lug boss D2 can move on incline bench D3.
Thermal relay comprises reset mode selection knob C1, and reset mode selects knob C1 to be provided with stopper section C2, and bearing 7 is provided with sliding tray, and slide block 7 moves in sliding tray, and stopper section C2 can pass in and out sliding tray.
Claims (7)
1. a thermal relay, comprise heat induction device, rod gear and contact system, described rod gear and described contact system are positioned over respectively the front and back of bearing, it is characterized in that: described contact system comprises single-break contact device, described single-break contact device comprises the first junction block, the second junction block and the movable contact spring with fixed contact boss, one end riveted joint of the first described junction block and described movable contact spring, the other end of described movable contact spring has moving contact boss, described moving contact boss is relative between two with described fixed contact boss.
2. thermal relay according to claim 1, it is characterized in that: described heat induction device comprises conducting rod, the heating element being connected with described conducting rod by copper litz wire, and bimetal leaf, one end of described bimetal leaf is connected with described heating element spot welding, the other end of described bimetal leaf drives push rod to do horizontal motion, described push rod acts on slide block through described rod gear, and described slide block is for stirring the contact system at the back side of described bearing.
3. thermal relay according to claim 2, it is characterized in that: described thermal relay comprises test button, the below of described test button is provided with briquetting, described briquetting below compression the first spring, described briquetting is provided with pressure head, described slide block is provided with swash plate, and described pressure head and described swash plate coordinate the slide block level described in promoting to move right.
4. thermal relay according to claim 2, it is characterized in that: described thermal relay comprises reset button, the below of described reset button arranges the second spring, the end of described reset button is provided with incline bench, described slide block is provided with lug boss, and described lug boss can move on described incline bench.
5. thermal relay according to claim 3, it is characterized in that: described thermal relay comprises reset button, the below of described reset button arranges the second spring, the end of described reset button is provided with incline bench, described slide block is provided with lug boss, and described lug boss can move on described incline bench.
6. thermal relay according to claim 5, it is characterized in that: described thermal relay comprises reset mode selection knob, described reset mode selects knob to be provided with stopper section, described bearing is provided with sliding tray, described slide block moves in described sliding tray, and described stopper section can pass in and out described sliding tray.
7. thermal relay according to claim 3, it is characterized in that: described thermal relay comprises reset mode selection knob, described reset mode selects knob to be provided with stopper section, described bearing is provided with sliding tray, described slide block moves in described sliding tray, and described stopper section can pass in and out described sliding tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320432041.9U CN203536316U (en) | 2013-07-09 | 2013-07-09 | Thermal relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320432041.9U CN203536316U (en) | 2013-07-09 | 2013-07-09 | Thermal relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536316U true CN203536316U (en) | 2014-04-09 |
Family
ID=50422496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320432041.9U Expired - Lifetime CN203536316U (en) | 2013-07-09 | 2013-07-09 | Thermal relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536316U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064408A (en) * | 2014-07-11 | 2014-09-24 | 信息产业部电子第四十研究所华成高新技术公司 | High-power vehicle preheating relay |
| CN104319178A (en) * | 2014-10-31 | 2015-01-28 | 天水二一三电器有限公司 | Action mechanism with elastic touch bridge for thermal relay |
| CN110047708A (en) * | 2019-04-15 | 2019-07-23 | 广东求精电气有限公司 | A kind of electrothermal relay with protection motor function |
-
2013
- 2013-07-09 CN CN201320432041.9U patent/CN203536316U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064408A (en) * | 2014-07-11 | 2014-09-24 | 信息产业部电子第四十研究所华成高新技术公司 | High-power vehicle preheating relay |
| CN104319178A (en) * | 2014-10-31 | 2015-01-28 | 天水二一三电器有限公司 | Action mechanism with elastic touch bridge for thermal relay |
| CN110047708A (en) * | 2019-04-15 | 2019-07-23 | 广东求精电气有限公司 | A kind of electrothermal relay with protection motor function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
|
| CX01 | Expiry of patent term |