CN201717210U - Temperature compensating device of breaker - Google Patents
Temperature compensating device of breaker Download PDFInfo
- Publication number
- CN201717210U CN201717210U CN2010202236251U CN201020223625U CN201717210U CN 201717210 U CN201717210 U CN 201717210U CN 2010202236251 U CN2010202236251 U CN 2010202236251U CN 201020223625 U CN201020223625 U CN 201020223625U CN 201717210 U CN201717210 U CN 201717210U
- Authority
- CN
- China
- Prior art keywords
- knob
- radial arm
- spiral arm
- cam
- set screw
- 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
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Abstract
The utility model discloses a temperature compensating device of a breaker, which comprises a knob, a compensation plate, a radial arm, a compression spring and a fixed seat. The compensation plate is movably connected with the radial arm; a cylinder at the bottom of the radial arm and a cylinder at the bottom of the knob are respectively inserted into a first circular hole and a second circular hole in the fixed seat; a cam is formed on the knob close to the bottom end; the compression spring is installed between one end of the radial arm and the fixed seat; the other end of the radial arm is joined together with the cam at the bottom of the knob; a set screw is installed on the radial arm; and the top end of the set screw contacts with the cam on the knob. As the set screw is added on the radial arm, the angle of the radial arm can be changed by screwing in or screwing out the set screw so as to adjust the initial position at the top end of the compensation plate. Even if the accuracy of a part is not high, small difference can also be corrected by adjusting the set screw. Not only is the manufacture cost of the part saved, but also the adjustability of the product is improved.
Description
Technical field
The utility model relates to the low-voltage electrical apparatus field, is 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.
The utility model content
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.
The technical solution of the utility model 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 utility model is:
The utility model 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 utility model.
Fig. 3 is an installation diagram of the present utility model.
Fig. 4 is a front view of the present utility model.
Fig. 5 is a rearview of the present utility model.
Fig. 6 is a left view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Fig. 2～Fig. 6 shows various view of the present utility model.As Fig. 2, shown in Figure 3, the utility model 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 utility model, and the utility model is not limited 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 utility model and design, all should think to be included within the protection range of the present utility model.
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 |
|---|---|---|---|
| CN2010202236251U CN201717210U (en) | 2010-06-12 | 2010-06-12 | Temperature compensating device of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202236251U CN201717210U (en) | 2010-06-12 | 2010-06-12 | Temperature compensating device of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717210U true CN201717210U (en) | 2011-01-19 |
Family
ID=43463217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202236251U Expired - Lifetime CN201717210U (en) | 2010-06-12 | 2010-06-12 | Temperature compensating device of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859668A (en) * | 2010-06-12 | 2010-10-13 | 台安科技(无锡)有限公司 | Temperature compensation device of circuit breaker |
-
2010
- 2010-06-12 CN CN2010202236251U patent/CN201717210U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859668A (en) * | 2010-06-12 | 2010-10-13 | 台安科技(无锡)有限公司 | Temperature compensation device of circuit breaker |
| CN101859668B (en) * | 2010-06-12 | 2013-01-09 | 台安科技(无锡)有限公司 | Temperature compensation device of circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |