CN202734777U - Thermal relay bimetallic strip detection device - Google Patents
Thermal relay bimetallic strip detection device Download PDFInfo
- Publication number
- CN202734777U CN202734777U CN 201220282783 CN201220282783U CN202734777U CN 202734777 U CN202734777 U CN 202734777U CN 201220282783 CN201220282783 CN 201220282783 CN 201220282783 U CN201220282783 U CN 201220282783U CN 202734777 U CN202734777 U CN 202734777U
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- CN
- China
- Prior art keywords
- electrothermal relay
- bimetallic strip
- driving lever
- displacement transducer
- relay bimetallic
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Abstract
The utility model provides a thermal relay bimetallic strip detection device which includes probes which cooperate with thermal relay bimetallic strips, displacement sensors which are electrically connected with the probes to detect the position states of the thermal relay bimetallic strips via the probes, a display device which is electrically connected with the displacement sensors and is used for displaying a metering value representing the position states of the thermal relay bimetallic strips, a shifting rod which cooperates with a current contact in a thermal relay, and a pre-shifting rod which includes an inclined part. The position of the shifting rod can be adjusted. At least a part of the inclined part of the pre-shifting rod is below the shifting rod. Through arranging the pre-shifting rod of which at least a part of the inclined part is below the shifting rod, the shifting rod can not contact with the side wall of the thermal relay when the shifting rod moves downward to cooperate with the current contact, and the detection can be carried out smoothly.
Description
Technical field
The utility model belongs to electromechanical equipment and makes the field, is specifically related to a kind of electrothermal relay bimetallic strip pick-up unit.
Background technology
Electrothermal relay is to produce heat by the electric current that flows into thermal element, makes the bimetallic strip generation deformation of different expansion coefficient, when deformation reaches certain distance; just promote the connecting rod action, control circuit is disconnected, thereby make the contactor dead electricity; main circuit disconnects, and realizes the overload protection of motor.Particularly, generally include some bimetallic strips arranged side by side in the existing electrothermal relay, this bimetallic strip is formed by the sheet metal spreading of two kinds of different heat expansion coefficients, when electromotor overload, electric current by heater element surpasses setting current, bimetallic strip is heated and is bent upwards the disengaging buckle, and normally closed contact is disconnected.Because normally closed contact is to be connected in the control circuit of motor, its disconnection meeting is so that the contactor coil outage of joining with it, thereby the contactor main contacts disconnects, and the main circuit outage of motor has realized overload protection.Electrothermal relay is as the overload protection element of motor, and little with its volume, simple in structure, low cost and other advantages is widely applied aborning.
Generally include an electric current contact in the electrothermal relay, the size of its displacement can be used for characterizing the power by the electric current of electrothermal relay, and displacement is larger, and then representative is larger by the electric current of electrothermal relay, and displacement is less, and then representative is less by the electric current of electrothermal relay.In the existing electrothermal relay bimetallic strip pick-up unit, usually be provided with driving lever, be used for and this electric current contacts mates, to simulate the testing environment of certain strength of current.But, because the side-walls that the position of this electric current contact is adjoined electrothermal relay usually, driving lever descend and with the process of electric current contacts mates in usually can conflict and strike the sidewall of electrothermal relay, cause detecting and can not finish smoothly.
The utility model content
The purpose of this utility model is to provide a kind of electrothermal relay bimetallic strip pick-up unit, it is positioned at the more pre-driving lever of below of driving lever position by at least part of rake position is set, and avoids driving lever to collide with the sidewall conflict of electrothermal relay in the process of decline and electric current contacts mates.
For realizing above-mentioned utility model purpose, the utility model provides a kind of electrothermal relay bimetallic strip pick-up unit, location status for detection of the electrothermal relay bimetallic strip, described electrothermal relay comprises the cavity by some sidewall definition, and the electric current contact that is arranged in cavity, described electrothermal relay bimetallic strip pick-up unit comprises:
Probe, described probe are used for cooperating with the electrothermal relay bimetallic strip;
Displacement transducer, described displacement transducer and described probe are electrically connected, and described displacement transducer is by the location status of described probe in detecting electrothermal relay bimetallic strip;
Display device, described display device and described displacement transducer are electrically connected, and are used for showing the variable that characterizes described electrothermal relay bimetallic strip location status;
Driving lever, described driving lever are used for matching with electrothermal relay electric current contact;
Pre-driving lever, described pre-driving lever comprises a rake, at least part of rake position of described pre-driving lever is positioned at more below compared to the position of described driving lever.
As further improvement of the utility model, when described probe cooperated with the electrothermal relay bimetallic strip, away from the position of electrothermal relay bimetallic strip pick-up unit, then the displacement of electric current contact was larger in the described electrothermal relay more for described driving lever.
As further improvement of the utility model, described driving lever is parallel with described pre-driving lever.
As further improvement of the utility model, described driving lever position is adjustable.
As further improvement of the utility model, when described probe cooperates with the electrothermal relay bimetallic strip, the plane that the axial line of described driving lever and the axial line of described pre-driving lever are determined and a parallel sidewalls of described electrothermal relay.
As further improvement of the utility model, described displacement transducer comprises inductive displacement transducer and/or capacitive displacement transducer and/or optical displacement sensor and/or ultrasonic type displacement transducer and/or Hall displacement transducer.
As further improvement of the utility model, described displacement transducer comprises linear displacement transducer.
As further improvement of the utility model, described display device comprises Displaying Meter and/or electronic console.
Compared with prior art, the utility model is positioned at the more pre-driving lever of below of driving lever position by at least part of rake position is set, avoid driving lever to collide with the sidewall conflict of electrothermal relay in the process of decline and electric current contacts mates, the assurance testing process is finished smoothly.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment electrothermal relay bimetallic strip pick-up unit;
Fig. 2 is the structural representation of driving lever in the utility model one embodiment electrothermal relay bimetallic strip pick-up unit;
Fig. 3 is the structural representation of pre-driving lever in the utility model one embodiment electrothermal relay bimetallic strip pick-up unit.
Embodiment
Below with reference to embodiment shown in the drawings the utility model is described in detail.But these embodiments do not limit the utility model, and the conversion on the structure that those of ordinary skill in the art makes according to these embodiments, method or the function all is included in the protection domain of the present utility model.
Ginseng Fig. 1 to Fig. 3, introduce an embodiment of the utility model electrothermal relay bimetallic strip pick-up unit 100, it is for detection of the location status of electrothermal relay bimetallic strip, and said electrothermal relay comprises the cavity by some sidewall definition here, and the electric current contact that is arranged in cavity.This electrothermal relay bimetallic strip pick-up unit 100 comprises probe 10, displacement transducer 20, display device, driving lever 30 and pre-driving lever 40.
In the present embodiment, owing to state on the linear position direction that only need detect the electrothermal relay bimetallic strip, so adopt linear displacement transducer 20, it can convert the straight line mechanical displacement to electric signal.
Display device and displacement transducer 20 are electrically connected, and are used for showing the variable that characterizes electrothermal relay bimetallic strip location status.Display device can comprise Displaying Meter and/or electronic console.
In the present embodiment, probe 10, displacement transducer 20, display device and driving lever 30 in fact all are positioned on the matrix that can move up and down 50.When electrothermal relay was transferred to a precalculated position, this matrix 50 moved downward, and the electric current contacts mates in driving lever 30 and the electrothermal relay is so that the circuit contact produces certain displacement, to simulate the testing environment of a strength of current; Probe 10 and electrothermal relay bimetallic strip cooperate and contacts, and by detecting the location status of corresponding electrothermal relay bimetallic strip with the displacement transducer 20 of its electric connection, and in corresponding display device sign out.Simultaneously, regulate driving lever 30 towards the position of getting over away from electrothermal relay bimetallic strip pick-up unit 100, then the displacement of electric current contact is larger in the electrothermal relay, correspondingly simulates the testing environment of larger strength of current, to improve the reliability of testing result.
In testing process, strike on the electrothermal relay sidewall in order to prevent that driving lever 30 from conflicting, electrothermal relay bimetallic strip pick-up unit 100 of the present utility model is provided with pre-driving lever 40, and it includes a rake 41.The position of at least part of rake 41 of this pre-driving lever 40 is positioned at more below compared to the position of driving lever 30.This pre-driving lever 40 is parallel with driving lever 30, and the plane determined of the axial line of driving lever 30 and the axial line of pre-driving lever 40 and a parallel sidewalls of electrothermal relay.It can itself insert in the cavity of electrothermal relay by the pre-driving lever 40 of rake 41 guiding, like this, has just guaranteed that driving lever in parallel 30 also can successfully insert in the cavity of electrothermal relay, and has matched with the electric current contact.
Electrothermal relay bimetallic strip pick-up unit 100 of the present utility model is positioned at the more pre-driving lever 40 of below of driving lever 30 positions by an at least part of rake 41 positions are set, avoid driving lever 30 to collide with the sidewall conflict of electrothermal relay in the process of decline and electric current contacts mates, the assurance testing process is finished smoothly.
Be to be understood that, although this instructions is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions only is for clarity sake, those skilled in the art should make instructions as a whole, technical scheme in each embodiment also can through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.
Above listed a series of detailed description only is specifying for feasibility embodiment of the present utility model; they are not to limit protection domain of the present utility model, allly do not break away from equivalent embodiment or the change that the utility model skill spirit does and all should be included within the protection domain of the present utility model.
Claims (8)
1. electrothermal relay bimetallic strip pick-up unit, for detection of the location status of electrothermal relay bimetallic strip, described electrothermal relay comprises the cavity by some sidewall definition, and the electric current contact that is arranged in cavity, it is characterized in that described electrothermal relay bimetallic strip pick-up unit comprises:
Probe, described probe are used for cooperating with the electrothermal relay bimetallic strip;
Displacement transducer, described displacement transducer and described probe are electrically connected, and described displacement transducer is by the location status of described probe in detecting electrothermal relay bimetallic strip;
Display device, described display device and described displacement transducer are electrically connected, and are used for showing the variable that characterizes described electrothermal relay bimetallic strip location status;
Driving lever, described driving lever are used for matching with electrothermal relay electric current contact;
Pre-driving lever, described pre-driving lever comprises a rake, at least part of rake position of described pre-driving lever is positioned at more below compared to the position of described driving lever.
2. electrothermal relay bimetallic strip pick-up unit according to claim 1, it is characterized in that, when described probe cooperated with the electrothermal relay bimetallic strip, away from the position of electrothermal relay bimetallic strip pick-up unit, then the displacement of electric current contact was larger in the described electrothermal relay more for described driving lever.
3. electrothermal relay bimetallic strip pick-up unit according to claim 1 is characterized in that, described driving lever is parallel with described pre-driving lever.
4. electrothermal relay bimetallic strip pick-up unit according to claim 1 is characterized in that described driving lever position is adjustable.
5. electrothermal relay bimetallic strip pick-up unit according to claim 1, it is characterized in that, when described probe cooperates with the electrothermal relay bimetallic strip, the plane that the axial line of described driving lever and the axial line of described pre-driving lever are determined and a parallel sidewalls of described electrothermal relay.
6. electrothermal relay bimetallic strip pick-up unit according to claim 1, it is characterized in that described displacement transducer comprises inductive displacement transducer and/or capacitive displacement transducer and/or optical displacement sensor and/or ultrasonic type displacement transducer and/or Hall displacement transducer.
7. electrothermal relay bimetallic strip pick-up unit according to claim 1 is characterized in that described displacement transducer comprises linear displacement transducer.
8. electrothermal relay bimetallic strip pick-up unit according to claim 1 is characterized in that described display device comprises Displaying Meter and/or electronic console.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282783 CN202734777U (en) | 2012-06-15 | 2012-06-15 | Thermal relay bimetallic strip detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282783 CN202734777U (en) | 2012-06-15 | 2012-06-15 | Thermal relay bimetallic strip detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734777U true CN202734777U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220282783 Expired - Fee Related CN202734777U (en) | 2012-06-15 | 2012-06-15 | Thermal relay bimetallic strip detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734777U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512515A (en) * | 2012-06-15 | 2014-01-15 | 苏州工业园区高登威科技有限公司 | Thermorelay's bimetallic strip detector |
| CN103512517A (en) * | 2012-06-15 | 2014-01-15 | 苏州工业园区高登威科技有限公司 | Thermorelay's bimetallic strip detector |
-
2012
- 2012-06-15 CN CN 201220282783 patent/CN202734777U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512515A (en) * | 2012-06-15 | 2014-01-15 | 苏州工业园区高登威科技有限公司 | Thermorelay's bimetallic strip detector |
| CN103512517A (en) * | 2012-06-15 | 2014-01-15 | 苏州工业园区高登威科技有限公司 | Thermorelay's bimetallic strip detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20140615 |
|
| EXPY | Termination of patent right or utility model |