CN201084663Y - A thermo-electro-magnetic over-current adjustable-type release - Google Patents
A thermo-electro-magnetic over-current adjustable-type release Download PDFInfo
- Publication number
- CN201084663Y CN201084663Y CNU2007200734640U CN200720073464U CN201084663Y CN 201084663 Y CN201084663 Y CN 201084663Y CN U2007200734640 U CNU2007200734640 U CN U2007200734640U CN 200720073464 U CN200720073464 U CN 200720073464U CN 201084663 Y CN201084663 Y CN 201084663Y
- Authority
- CN
- China
- Prior art keywords
- armature
- short circuit
- push rod
- short
- fixed
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7418—Adjusting both electrothermal and electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2472—Electromagnetic mechanisms with rotatable armatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The utility model discloses an adjustable thermal electromagnetic overcurrent release, comprising an overload protection unit and a short circuit protection unit. The utility model is characterized in that the push rod of the short circuit protection unit is fixed to the upper end of an armature; the armature, positioned on the shaft of an armature bracket, can rotate around the shaft; the armature bracket is fixed to a magnetic yoke corresponding to the armature; the pivot of a lever is sleeved on a stub axle riveted in the armature bracket; a conductive bar and the magnetic yoke is fixed to a base; a short circuit adjusting knob and a short circuit adjusting bar are positioned on the bracket; a spring is positioned between the short circuit adjusting bar and the lever; the armature driven by the suction of the magnetic yoke and the push rod fixed to the armature act on the twist off device of the circuit breaker device directly; the moving direction of the push rod is opposite to the bending direction of the heated bi-metallic strip positioned on the conductive bar. Due to that the push rod acts on the trip-off device of the circuit breaker, the utility model has the advantages of simplifying structure, shortening the short circuit trip-off time of the circuit breaker and reducing the possible damage caused by the short circuit.
Description
Technical field
The utility model relates to the circuit breaker overcurrent trip, relates in particular to the thermoelectric magnetic-type overcurrent trip of adjustable type.
Background technology
The thermoelectric magnetic-type overcurrent trip of circuit breaker roughly has two kinds of forms: non-adjustable type of release setting value and adjustable type.At present; most novel breaker has been selected modular adjustable type overcurrent trip for use when design; its advantage is to have realized that overload protection operating current and short-circuit protection operating current are adjustable, has enlarged user's scope of application, and is applied to as modular assembly and has made things convenient for manufacturing in the circuit breaker.
The design of the thermoelectric magnetic-type overcurrent trip of existing circuit breaker is acted on the draw bar of release mostly earlier by thermo bimetal's element or electromagnet armature, and then removes to promote the trip gear of breaker mechanism by push rod, and circuit breaker is disconnected.
The adjustable type overcurrent trip is when realizing the overcurrent overload protection; be to realize that by the distance of regulating between thermo bimetal's element and the release lever overload protection operating current is adjustable, when realizing the overcurrent short-circuit protection, realize that by regulating magnet air gap or electromagnet action force the short-circuit protection operating current is adjustable.
With the thermoelectric magnetic-type overcurrent trip of a kind of existing adjustable type is example, and this release comprises overload protection arrangement and short-circuit protection, has part such as push rod shared in these two devices.Overload protection arrangement comprises overload adjusting knob, overload adjusting rod, bimetal leaf.The position that rotation overload adjusting knob can move the overload adjusting rod makes bimetal leaf change to the operating distance of overload adjusting rod.At reset mode, push rod is transshipped adjusting rod to be limited, and when overload took place circuit, the bimetal leaf heated bending promoted the overload adjusting rod, discharges push rod, removes to promote the trip gear of circuit breaker again by push rod, and circuit breaker is disconnected.Short-circuit protection comprises short circuit adjusting knob, short circuit adjusting rod, armature, yoke etc.Rotation short circuit adjusting knob changes the position of short circuit adjusting rod and comes regulating magnet air gap or electromagnet action counter-force.At reset mode, push rod is limited by the short circuit adjusting rod, and when short circuit took place, yoke attracted armature, and armature overcomes counter-force and promotes the short circuit adjusting rod, discharges push rod, removes to promote the trip gear of circuit breaker again by push rod, and circuit breaker is disconnected.
The weak point of this design is: when circuit generation overcurrent, the dropout of breaker mechanism action will prolong operate time by a plurality of part transmission.This defective during because of the release overload protection action itself time-delay is arranged, so influence is little; But when short circuit accident took place, the deferred action of short-circuit protection will work the mischief to personal safety and facility, the consequence of circuit and the circuit breaker that exert an influence safe handling itself.Therefore, the design that has has increased a short circuit trip gear, this short circuit trip gear has electromagnetic type, and vapour-pressure type is also arranged, and it acts directly on the trip gear of breaker mechanism.When big short circuit current takes place, circuit breaker is disconnected rapidly by this additional short circuit trip gear.But this design has increased the complexity of system, has improved the manufacturing cost and the difficulty of product.
The utility model content
The purpose of this utility model is to provide a kind of adjustable type thermoelectric magnetic-type overcurrent trip; this overcurrent trip is simple in structure; when carrying out short-circuit protection, directly act on the trip gear of breaker mechanism by the electromagnet armature push rod; the drop-away time of circuit breaker when having shortened short circuit, thus the harm that short circuit is caused personal safety and facility reduced.
The utility model is achieved in that the thermoelectric magnetic-type overcurrent trip of a kind of adjustable type, comprise overload protection arrangement and short-circuit protection, overload protection arrangement and short-circuit protection are installed in the pedestal jointly, and shared support, busbar, and support is installed on the pedestal; Short-circuit protection comprises short circuit adjusting knob, short circuit adjusting rod, armature, yoke, push rod, armature bracket, lever, axle, spring, push rod is fixed on the armature upper end, armature is contained on the axle of armature bracket, can rotate around the axis, armature bracket is fixed on the yoke, and yoke is corresponding to armature, and the fulcrum of lever is sleeved on the minor axis, minor axis is riveted on the armature bracket, and busbar and yoke are fixed in the pedestal; Short circuit adjusting knob and short circuit adjusting rod are rack-mount, and spring is installed between short circuit adjusting rod and the lever; It is characterized in that: when armature was subjected to the motion of yoke suction, the push rod that is fixed in one with armature acted directly on the trip gear of breaker mechanism.
Described pushrod movement direction is opposite with the heated bending direction of motion of bimetal leaf on being loaded on busbar.
The utility model is by armature and push rod are fixed as one; when carrying out short-circuit protection, directly act on the trip gear of breaker mechanism by the electromagnet armature push rod; simplify the structure; shortened the drop-away time of circuit breaker when short circuit takes place; when having overcome existing similar release short circuit and having threaded off operate time long shortcoming; guarantee that circuit breaker disconnects rapidly when short circuit current takes place, thereby reduced the harm that short circuit is caused personal safety and facility.
Description of drawings
Fig. 1 is the thermoelectric magnetic-type overcurrent trip of an adjustable type general illustration;
Fig. 2 is the thermoelectric magnetic-type overcurrent trip of an adjustable type part schematic diagram;
Fig. 3 is the thermoelectric magnetic-type overcurrent trip of an adjustable type short circuit action component schematic diagram;
Fig. 4 is that the thermoelectric magnetic-type overcurrent trip overload of adjustable type is regulated the part schematic diagram;
Fig. 5 is that the part schematic diagram is regulated in the short circuit of the thermoelectric magnetic-type overcurrent trip of adjustable type;
Fig. 6 is the trip gear schematic diagram of breaker mechanism.
Among the figure: 1 armature, 2,3 yokes, 4 busbars, 5 pedestals, 6,7 springs, 9 overload adjusting rods, 10 springs, 11 push rods, 12 supports, 13 overload adjusting knobs, 14 short circuit adjusting knobs, 15 short circuit adjusting rods, 16 springs, 17 bimetal leafs, 18 levers, 19 breach, 20 juts, 21 eccentric projections, 22 grooves, 23 inclined-planes, 24 screw inclined planes, 25 projections, 26 dropouts, 9 devices, 27 armature brackets, 28 extension bars, 29 push rods.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 to Fig. 6, the thermoelectric magnetic-type overcurrent trip of a kind of adjustable type comprises overload protection arrangement and short-circuit protection, and overload protection arrangement and short-circuit protection are installed in the pedestal 5 jointly, and parts such as shared support 12, busbar 4.
Except that shared part, short-circuit protection also comprises short circuit adjusting knob 14, short circuit adjusting rod 15, armature 1, yoke 3, armature bracket 27, axle 2, spring 16, lever 18 and push rod 29.Armature 1, yoke 3, armature bracket 27, axle 2, busbar 4, lever 18 and push rod 29 have been formed the short circuit action component, referring to Fig. 3, push rod 29 is fixed on armature 1 upper end, armature 1 is contained on the axle 2 of armature bracket 27, and armature 1 and push rod 29 can rotate around axle 2, and armature bracket 27 is fixed on the yoke 3, yoke 3 is corresponding to armature 1 lower end, the fulcrum of lever 18 is sleeved on the minor axis, and minor axis is riveted on the armature bracket 27, busbar 4 and yoke 3 by screw in pedestal 5.Armature 1 is subjected to yoke 3 suction when motion, and the push rod 29 that is fixed as one with armature 1 acts directly on the trip gear 26 of breaker mechanism, and push rod 29 directions of motion are opposite with the heated bending direction of motion of bimetal leaf 17 on being loaded on busbar 4.
Except that shared part, overload protection arrangement also comprises overload adjusting knob 13, overload adjusting rod 9, bimetal leaf 17, axle 6, spring 7.Bimetal leaf 17 is riveted on the busbar 4, along with busbar 4 passes through electric current, can produce certain heat, bimetal leaf 17 temperature distortions, referring to Fig. 3, Fig. 2, because bimetal leaf 17 is to be formed by two kinds of metal composite with different heat expansion coefficient, its back that is heated acts on inclined-plane 23 parts on the overload adjusting rod 9 to the bent distortion of a lateral bending after the distortion of bimetal leaf 17 heated bendings.
Referring to Fig. 1, Fig. 2, support 12 by screw in pedestal 5, push rod 11, overload adjusting knob 13, short circuit adjusting knob 14 and short circuit adjusting rod 15 are installed on the support 12, and spring 10 is installed between push rod 11 and the support 12, and spring 16 is installed between short circuit adjusting rod 15 and the lever 18.
In the present embodiment, the projection 25 of short circuit adjusting rod 15 withstands on the screw inclined plane 24 of short circuit adjusting knob 14, and referring to Fig. 5, the extension bar 28 of short circuit adjusting rod 15 connects an end of spring 16, and the other end of spring 16 connects lever 18.When rotation short-circuit protection adjusting knob 14, projection 25 withstands on the diverse location of screw inclined plane 24, makes the tension variations of spring 16, to realize regulating different short circuit operating currents.
In the present embodiment, the eccentric projection 21 of overload adjusting knob 13 is arranged in the groove 22 of two projections formation of overload adjusting rod 9, referring to Fig. 4, when rotation overload adjusting knob 13, eccentric projection 21 drives overload adjusting rod 9 and moves in axle 6 certain limit in the horizontal direction, make the different piece on the inclined-plane 23 on the bimetal leaf 17 corresponding overload adjusting rods 9, to realize regulating different overload operating currents.
When resetting, push rod 11 is subjected to the thrust of breaker mechanism and rotates, and makes spring 10 compression, and the adjusting rod 9 of overload action simultaneously is subjected to the reset force of spring 7 and rotates, and makes jut 20 on the overload action adjusting rod 9 withstand on breach 19 places on the push rod 11; Lever 18 is subjected to spring 16 power that one end of lever 18 is acted on the armature 1, makes the certain air gap of maintenance between armature 1 and the yoke 3.When having served as live stream, bimetal leaf 17 bendings, promote overload action adjusting rod 9, the breach 19 on the jut 20 release push rods 11 of overload action adjusting rod 9, make push rod 11 be subjected to the active force of spring 10 and rotate, the trip gear 26 that promotes circuit breaker disconnects circuit breaker, referring to Fig. 4, Fig. 6; When short circuit current came, yoke 3 attracted armature 1, made armature 1 drive the counter-force that push rod 29 overcomes spring 16, and the trip gear 26 that promotes circuit breaker disconnects circuit breaker, referring to Fig. 3, Fig. 6.
The utility model directly acts on the trip gear of breaker mechanism by the push rod that makes short-circuit protection, simplifies the structure, and has shortened the short circuit drop-away time of circuit breaker, has reduced the harm that may bring because of the circuit accident of being short-circuited.
Claims (2)
1. the thermoelectric magnetic-type overcurrent trip of an adjustable type, comprise overload protection arrangement and short-circuit protection, overload protection arrangement and short-circuit protection are installed in the pedestal (5) jointly, and shared support (12), busbar (4), and support (12) is installed on the pedestal (5);
Short-circuit protection comprises short circuit adjusting knob (14), short circuit adjusting rod (15), armature (1), yoke (3), push rod (29), armature bracket (27), lever (18), axle (2), spring (16), push rod (29) is fixed on armature (1) upper end, armature (1) is contained on the axle (2) of armature bracket (27), can rotate around axle (2), armature bracket (27) is fixed on the yoke (3), yoke (3) is corresponding to armature (1), the fulcrum of lever (18) is sleeved on the minor axis, minor axis is riveted on the armature bracket (27), and busbar (4) and yoke (3) are fixed in the pedestal (5); Short circuit adjusting knob (14) and short circuit adjusting rod (15) are installed on the support (12), and spring (16) is installed between short circuit adjusting rod (15) and the lever (18);
It is characterized in that: when armature (1) was subjected to the motion of yoke (3) suction, the push rod (29) that is fixed in one with armature (1) acted directly on the trip gear (26) of breaker mechanism.
2. the thermoelectric magnetic-type overcurrent trip of adjustable type according to claim 1 is characterized in that: push rod (29) direction of motion is opposite with the heated bending direction of motion of bimetal leaf (17) on being loaded on busbar (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200734640U CN201084663Y (en) | 2007-08-10 | 2007-08-10 | A thermo-electro-magnetic over-current adjustable-type release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200734640U CN201084663Y (en) | 2007-08-10 | 2007-08-10 | A thermo-electro-magnetic over-current adjustable-type release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201084663Y true CN201084663Y (en) | 2008-07-09 |
Family
ID=39627135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200734640U Expired - Lifetime CN201084663Y (en) | 2007-08-10 | 2007-08-10 | A thermo-electro-magnetic over-current adjustable-type release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201084663Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169782A (en) * | 2011-04-02 | 2011-08-31 | 常熟开关制造有限公司(原常熟开关厂） | Current regulation device of release of circuit breaker |
| CN102347175A (en) * | 2010-07-30 | 2012-02-08 | 上海良信电器股份有限公司 | Electronic releaser for molded case circuit breaker |
| CN104465249A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Adjustable electromagnetic release |
| CN106229237A (en) * | 2016-09-26 | 2016-12-14 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| WO2017206426A1 (en) * | 2016-06-02 | 2017-12-07 | 浙江正泰电器股份有限公司 | Electromagnetic device for molded case circuit breaker |
| CN106252177B (en) * | 2016-09-26 | 2018-05-22 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN109449064A (en) * | 2018-12-15 | 2019-03-08 | 浙江正泰电器股份有限公司 | Electromagnetic tripping apparatus and breaker |
| CN111180282A (en) * | 2020-01-09 | 2020-05-19 | 江苏辉能电气有限公司 | Thermal tripping device of high-capacity molded case circuit breaker and molded case circuit breaker |
-
2007
- 2007-08-10 CN CNU2007200734640U patent/CN201084663Y/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347175A (en) * | 2010-07-30 | 2012-02-08 | 上海良信电器股份有限公司 | Electronic releaser for molded case circuit breaker |
| CN102347175B (en) * | 2010-07-30 | 2013-07-03 | 上海良信电器股份有限公司 | Electronic releaser for molded case circuit breaker |
| CN102169782A (en) * | 2011-04-02 | 2011-08-31 | 常熟开关制造有限公司(原常熟开关厂） | Current regulation device of release of circuit breaker |
| CN102169782B (en) * | 2011-04-02 | 2012-12-19 | 常熟开关制造有限公司(原常熟开关厂） | Current regulation device of release of circuit breaker |
| CN104465249A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Adjustable electromagnetic release |
| WO2015043424A1 (en) * | 2013-09-24 | 2015-04-02 | 上海电科电器科技有限公司 | Adjustable electromagnetic release |
| CN104465249B (en) * | 2013-09-24 | 2016-08-10 | 上海电科电器科技有限公司 | Adjustable electric magnetic release |
| US10008354B2 (en) | 2013-09-24 | 2018-06-26 | Seari Electric Technology Co., Ltd. | Adjustable electromagnetic release |
| WO2017206426A1 (en) * | 2016-06-02 | 2017-12-07 | 浙江正泰电器股份有限公司 | Electromagnetic device for molded case circuit breaker |
| CN106252177B (en) * | 2016-09-26 | 2018-05-22 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN106229237B (en) * | 2016-09-26 | 2018-06-05 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN106229237A (en) * | 2016-09-26 | 2016-12-14 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN109449064A (en) * | 2018-12-15 | 2019-03-08 | 浙江正泰电器股份有限公司 | Electromagnetic tripping apparatus and breaker |
| CN109449064B (en) * | 2018-12-15 | 2024-05-14 | 浙江正泰电器股份有限公司 | Electromagnetic trip device and circuit breaker |
| CN111180282A (en) * | 2020-01-09 | 2020-05-19 | 江苏辉能电气有限公司 | Thermal tripping device of high-capacity molded case circuit breaker and molded case circuit breaker |
| CN111180282B (en) * | 2020-01-09 | 2022-03-29 | 江苏辉能电气有限公司 | Thermal tripping device of high-capacity molded case circuit breaker and molded case circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201084663Y (en) | A thermo-electro-magnetic over-current adjustable-type release | |
| EP2251887B1 (en) | Electromagnetic trip device | |
| CN201608125U (en) | Mechanism for displaying thermomagnetic trip type in circuit breaker | |
| US3136921A (en) | Circuit breakers | |
| CN103681133A (en) | Switch mechanism and motor protection switch device | |
| US4090156A (en) | Circuit breaker having solid state and thermal-magnetic trip means | |
| CN201369299Y (en) | Overload protection device of thermomagnetic-type over current tripping device | |
| US7859369B2 (en) | Method of bi-directional thermal calibration of a circuit interrupter frame and circuit interrupter test system including the same | |
| EP2254140A1 (en) | Thermally independent overcurrent tripping device | |
| US3088008A (en) | Circuit breaker | |
| US8451076B2 (en) | Installation switching device | |
| CN217333981U (en) | Tripping mechanism | |
| CN202616161U (en) | Electromagnetic trip for small-sized circuit breaker | |
| CN205582858U (en) | Electromagnetism release of armature support is regarded as with iron core | |
| CN201364861Y (en) | Short circuit protection device used for thermomagnetic overcurrent tripping device | |
| CN201503830U (en) | Selective releasing device for low-voltage circuit breaker | |
| CN203588951U (en) | Thermomagnetic tripper with thermal compensation function | |
| US2074584A (en) | Electroresponsive device | |
| CN106158537B (en) | The Thermal protection component of electromagnetic protection device | |
| CN207489793U (en) | A kind of double yoke Thermomagnetic type releases | |
| GB926948A (en) | Multi-pole electric circuit breaker | |
| CN106876220B (en) | Thermal overload alarm non-tripping device of circuit breaker | |
| CN100573774C (en) | Selective protection switch | |
| CN113823537B (en) | Tripping protection device of circuit breaker | |
| CN220914130U (en) | Operating mechanism for controlling and protecting switch electric appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080709 |