CN101859668A - Temperature compensation device of circuit breaker - Google Patents
Temperature compensation device of circuit breaker Download PDFInfo
- Publication number
- CN101859668A CN101859668A CN 201010198544 CN201010198544A CN101859668A CN 101859668 A CN101859668 A CN 101859668A CN 201010198544 CN201010198544 CN 201010198544 CN 201010198544 A CN201010198544 A CN 201010198544A CN 101859668 A CN101859668 A CN 101859668A
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- China
- Prior art keywords
- spiral arm
- knob
- cam
- set screw
- temperature compensation
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- 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.)
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Abstract
The invention relates to a temperature compensation device of a circuit breaker, comprising a knob, a correction board, a spiral arm, a compression spring and a fixed seat, wherein the correction plate is movably connected with the spiral arm, a column at the bottom of the spiral arm and a column at the bottom of the knob are respectively inserted into a first circular hole and a second circular hole on the fixed seat and fixed; a cam is formed near the bottom end of the knob; the compression spring is arranged between one end of the spiral arm and the fixed seat, and the other end of the spiral arm closely clings to the cam at the bottom of the knob; a set screw is arranged on the spiral arm, and the top end of the set screw is contacted with the cam on the knob. In the invention, the set screw is added on the spiral arm, and the angle of the spiral arm can be changed by screwing the set screw in or out, therefore, the initial position of the top end of the correction board is adjusted. The tiny difference can be corrected by adjusting the set screw even if parts have no high precision. The invention not only saves the manufacturing cost of parts, but also increases the product adjustability.
Description
Technical field
The present invention relates to the low-voltage electrical apparatus field, be specifically related to a kind of temperature compensation means of circuit breaker.
Background technology
Circuit breaker is mainly used in the break-make of control motor.Alive in main circuit, two gold plaque heated bendings of heat induction device promote plectrum, and plectrum promotes the amending plates head again, make amending plates rotate.When the amending plates rotation reaches certain displacement, can move by lead agency, cut off the electric current of circuit.
The bimetal leaf of circuit breaker is subject to the influence of variation of ambient temperature, and when variation of ambient temperature, its tripping characteristic also will change thereupon.For overcoming above-mentioned drawback, existing circuit breaker generally has temperature compensation means.
Traditional temperature compensation means mainly is made up of knob 1, amending plates 2, spiral arm 3, compression spring 4, holder 5 as shown in Figure 1.Amending plates 2 is fixed on the spiral arm 3, and to a cylinder 7 should be arranged, knob 1 bottom also is a cylinder 8 on the spiral arm 3, and can be inserted into respectively has two circular holes, 9,10 internal fixation on the holder 5.Locate cam 11 of moulding near the bottom on the knob 1.Compression spring 4 is housed between one end of spiral arm 3 and the holder 5, can allows the other end of spiral arm 3 and the cam 11 of knob 1 bottom be close together like this.When turning knob 1, cam 11 also rotates together, can change spiral arm 3 open angles, thereby also change the position on amending plates 2 tops.
When setting current hour, the amount of bow of the bimetal leaf of heat induction device is not enough to promote amending plates 2.Clockwise rotate knob 1 this moment, makes the deflection to the right of amending plates 2 tops.To be equivalent to like this make a bigger setting current, and make the amount of bow of heat induction device can promote amending plates 2, thereby realized the scalable of setting current, the operation principle of Here it is breaker temperature compensation arrangement.
To accurately realize above action, then need each part precision than higher, otherwise size be variant slightly, will cause circuit breaker can't be under corresponding current condition precision maneuver.When for example the bending angle of amending plates 2 differed greatly, the initial position on its top will be inequality, and under the identical displacement of the bimetal leaf of heat induction device, a product may be threaded off like this, and the another one product can't be threaded off.And element precision requires the higher position to cause the rising of manufacturing cost.
Summary of the invention
At existing temperature compensation means element precision is required the shortcoming high, that adjustable is not enough, the applicant improves through research, the temperature compensation means of another kind of circuit breaker is provided, it can be revised the tiny difference of part, not only save manufacturing cost of parts, also increase the adjustable of product.
Technical scheme of the present invention is as follows:
A kind of temperature compensation means of circuit breaker comprises knob, amending plates, spiral arm, compression spring and holder; Amending plates and spiral arm flexibly connect, and the cylinder of the cylinder of spiral arm bottom and knob bottom inserts first circular hole and the second circular hole internal fixation on the holder respectively; Knob is near cam of bottom place's moulding; Between one end of spiral arm and the holder compression spring is housed, the cam of the other end of spiral arm and knob bottom is close together; The setting screw is installed on the described spiral arm, and the top of setting screw contacts with the cam on the knob.
Useful technique effect of the present invention is:
The present invention increases by one and sets screw on spiral arm, the top of setting screw contacts with the cam on the knob, sets the angle that screw can change spiral arm by precession or back-out, thereby regulates the initial position on amending plates top.Even part does not have very high precision, also can set the tiny difference of screw correction by adjusting.So both save manufacturing cost of parts, also increased the adjustable of product.
Description of drawings
Fig. 1 is the exploded view of existing temperature compensation means.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is an installation diagram of the present invention.
Fig. 4 is a front view of the present invention.
Fig. 5 is a rearview of the present invention.
Fig. 6 is a left view of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 2～Fig. 6 shows various view of the present invention.As Fig. 2, shown in Figure 3, the present invention is made up of knob 1, amending plates 2, spiral arm 3, compression spring 4, holder 5 and setting screw 6.Amending plates 2 is movably connected on the spiral arm 3 (sees Fig. 4, two projectioies of amending plates 2 ends are inserted in spiral arm 3 corresponding two grooves), spiral arm 3 bottoms are to there being a cylinder 7, knob 1 bottom also is a cylinder 8, both are inserted into two circular holes 9 and circular hole 10 internal fixation (from the angle of Fig. 2, a back circular hole 10 has been blocked by previous circular hole 9 slightly) on the holder 5 respectively.Locate cam 11 of moulding near the bottom on the knob 1.Compression spring 4 is housed between one end of spiral arm 3 and the holder 5, can allows the other end of spiral arm 3 and the cam 11 of knob 1 bottom be close together like this.When turning knob 1, cam 11 also rotates together, can change spiral arm 3 open angles, thereby also change the position on amending plates 2 tops.Be equipped with one on the spiral arm 3 and set screw 6, the top of setting screw 6 contacts (see figure 5) with the cam 11 on the knob 1, sets the angle that screw 6 can change spiral arm 3 by precession or back-out, thereby regulates the initial position on amending plates 2 tops.Even part does not have very high precision, also can set the tiny difference of screw 6 corrections by adjusting.
Above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present invention and design, all should think to be included within protection scope of the present invention.
Claims (1)
1. the temperature compensation means of a circuit breaker comprises knob (1), amending plates (2), spiral arm (3), compression spring (4) and holder (5); Amending plates (2) flexibly connects with spiral arm (3), and the cylinder (8) of the cylinder (7) of spiral arm (3) bottom and knob (1) bottom inserts first circular hole (9) and second circular hole (10) internal fixation on the holder (5) respectively; Knob (1) is near place, a bottom cam of moulding (11); Compression spring (4) is housed between one end of spiral arm (3) and the holder (5), and the cam (11) of the other end of spiral arm (3) and knob (1) bottom is close together; It is characterized in that: be equipped with on the described spiral arm (3) and set screw (6), the top of setting screw (6) contacts with the cam (11) on the knob (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010198544 CN101859668B (en) | 2010-06-12 | 2010-06-12 | Temperature compensation device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010198544 CN101859668B (en) | 2010-06-12 | 2010-06-12 | Temperature compensation device of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101859668A true CN101859668A (en) | 2010-10-13 |
| CN101859668B CN101859668B (en) | 2013-01-09 |
Family
ID=42945486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010198544 Active CN101859668B (en) | 2010-06-12 | 2010-06-12 | Temperature compensation device of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101859668B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169400A (en) * | 2016-08-31 | 2016-11-30 | 厦门宏发开关设备有限公司 | A kind of chopper and dropout thermal compensation structure |
| CN108807102A (en) * | 2018-08-17 | 2018-11-13 | 乐清市美拜电气有限公司 | The current regulation sub-assembly of leakage circuit breakers |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045891A (en) * | 1989-03-22 | 1990-10-03 | 西屋电气公司 | Adjustable circuit breaker thermal trip unit |
| JP2002170475A (en) * | 2000-11-30 | 2002-06-14 | Fuji Electric Co Ltd | Overload pull-out device of circuit breaker |
| CN101436494A (en) * | 2007-11-15 | 2009-05-20 | 富士电机机器制御株式会社 | Breaker |
| CN101515522A (en) * | 2008-02-19 | 2009-08-26 | 富士电机机器制御株式会社 | Thermal overload relay |
| CN101546676A (en) * | 2008-03-24 | 2009-09-30 | 富士电机机器制御株式会社 | Thermal overload relay |
| CN201717210U (en) * | 2010-06-12 | 2011-01-19 | 台安科技(无锡)有限公司 | Temperature compensating device of breaker |
-
2010
- 2010-06-12 CN CN 201010198544 patent/CN101859668B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045891A (en) * | 1989-03-22 | 1990-10-03 | 西屋电气公司 | Adjustable circuit breaker thermal trip unit |
| JP2002170475A (en) * | 2000-11-30 | 2002-06-14 | Fuji Electric Co Ltd | Overload pull-out device of circuit breaker |
| CN101436494A (en) * | 2007-11-15 | 2009-05-20 | 富士电机机器制御株式会社 | Breaker |
| CN101515522A (en) * | 2008-02-19 | 2009-08-26 | 富士电机机器制御株式会社 | Thermal overload relay |
| CN101546676A (en) * | 2008-03-24 | 2009-09-30 | 富士电机机器制御株式会社 | Thermal overload relay |
| CN201717210U (en) * | 2010-06-12 | 2011-01-19 | 台安科技(无锡)有限公司 | Temperature compensating device of breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169400A (en) * | 2016-08-31 | 2016-11-30 | 厦门宏发开关设备有限公司 | A kind of chopper and dropout thermal compensation structure |
| CN106169400B (en) * | 2016-08-31 | 2018-11-20 | 厦门宏发开关设备有限公司 | A kind of breaker and thermal compensation structure of threading off |
| CN108807102A (en) * | 2018-08-17 | 2018-11-13 | 乐清市美拜电气有限公司 | The current regulation sub-assembly of leakage circuit breakers |
| CN108807102B (en) * | 2018-08-17 | 2023-09-08 | 乐清市美拜电气有限公司 | Current regulation assembly of leakage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101859668B (en) | 2013-01-09 |
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