CN101859668B - Temperature compensation device of circuit breaker - Google Patents
Temperature compensation device of circuit breaker Download PDFInfo
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- CN101859668B CN101859668B CN 201010198544 CN201010198544A CN101859668B CN 101859668 B CN101859668 B CN 101859668B CN 201010198544 CN201010198544 CN 201010198544 CN 201010198544 A CN201010198544 A CN 201010198544A CN 101859668 B CN101859668 B CN 101859668B
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- spiral arm
- knob
- cam
- set screw
- temperature compensation
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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 Low Voltage Electrical Apparatus, be specifically related to a kind of temperature compensation means of circuit breaker.
Background technology
Circuit breaker is mainly used in controlling the break-make of motor.Alive in main circuit, two gold plaque heated bendings of heat induction device promote plectrum, and plectrum promotes again the amending plates head, so that amending plates is rotated.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 impact 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 is generally with temperature compensation means.
Traditional temperature compensation means mainly is comprised of knob 1, amending plates 2, spiral arm 3, Compress 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, can be inserted into respectively two circular holes 9 are arranged on the holder 5,10 interior fixing.Lean on cam 11 of positon of near bottom moulding on the knob 1.Between one end of spiral arm 3 and the holder 5 Compress Spring 4 is housed, can allows like this other end of spiral arm 3 and the cam 11 of knob 1 bottom be close together.When turning knob 1, cam 11 also rotates together, can change the angle that spiral arm 3 opens, 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 larger setting current, and make the amount of bow of heat induction device can promote amending plates 2, thereby realized regulating of setting current, the operation principle of Here it is breaker temperature compensation arrangement.
To accurately realize above action, then need the ratio of precision of each part higher, otherwise size be slightly variant, 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 not identical, 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
For existing temperature compensation means element precision is required the shortcoming high, that adjustable is not enough, the applicant is through Improvement, the temperature compensation means of another kind of circuit breaker is provided, it can be revised the tiny difference of part, not only save the cost that part is made, 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, Compress Spring and holder; Amending plates and spiral arm are flexibly connected, and the first circular hole and the second circular hole that the cylinder of the cylinder of spiral arm bottom and knob bottom inserts respectively on the holder are interior fixing; Knob is by cam of positon of near bottom moulding; Between one end of spiral arm and the holder Compress 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 at spiral arm and sets screw, and 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 the cost that part is made, also increased the adjustable of product.
Description of drawings
Fig. 1 is the exploded view of existing temperature compensation means.
Fig. 2 is exploded view of the present invention.
Fig. 3 is installation diagram of the present invention.
Fig. 4 is front view of the present invention.
Fig. 5 is rearview of the present invention.
Fig. 6 is 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.Such as Fig. 2, shown in Figure 3, the present invention is comprised of knob 1, amending plates 2, spiral arm 3, Compress Spring 4, holder 5 and setting screw 6.Amending plates 2 is movably connected on the spiral arm 3 (sees Fig. 4, two projections 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 respectively two circular holes 9 and circular hole 10 interior fixing (from the angle of Fig. 2, a rear circular hole 10 has been blocked by previous circular hole 9 slightly) on the holder 5.Lean on cam 11 of positon of near bottom moulding on the knob 1.Between one end of spiral arm 3 and the holder 5 Compress Spring 4 is housed, can allows like this other end of spiral arm 3 and the cam 11 of knob 1 bottom be close together.When turning knob 1, cam 11 also rotates together, can change the angle that spiral arm 3 opens, 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 (seeing Fig. 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), Compress Spring (4) and holder (5); Amending plates (2) is flexibly connected with spiral arm (3), and the first circular hole (9) and the second circular hole (10) that the cylinder (8) of the cylinder (7) of spiral arm (3) bottom and knob (1) bottom inserts respectively on the holder (5) are interior fixing; Knob (1) is by a cam of positon of near bottom moulding (11); Between one end of spiral arm (3) and the holder (5) Compress Spring (4) is housed, 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 CN101859668A (en) | 2010-10-13 |
| CN101859668B true CN101859668B (en) | 2013-01-09 |
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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 |
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| CN (1) | CN101859668B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4186415B2 (en) * | 2000-11-30 | 2008-11-26 | 富士電機機器制御株式会社 | Circuit breaker overload trip device |
-
2010
- 2010-06-12 CN CN 201010198544 patent/CN101859668B/en active Active
Patent Citations (5)
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-170475A 2002.06.14 |
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| Publication number | Publication date |
|---|---|
| CN101859668A (en) | 2010-10-13 |
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