CN205069544U - Thermal element mechanism of circuit breaker - Google Patents

Thermal element mechanism of circuit breaker Download PDF

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Publication number
CN205069544U
CN205069544U CN201520832663.XU CN201520832663U CN205069544U CN 205069544 U CN205069544 U CN 205069544U CN 201520832663 U CN201520832663 U CN 201520832663U CN 205069544 U CN205069544 U CN 205069544U
Authority
CN
China
Prior art keywords
thermal
circuit breaker
bimetal leaf
electroplax
heat transfer
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 - Fee Related
Application number
CN201520832663.XU
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Chinese (zh)
Inventor
南继泽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG JINGKAI ELECTRIC Co Ltd
Original Assignee
ZHEJIANG JINGKAI ELECTRIC Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG JINGKAI ELECTRIC Co Ltd filed Critical ZHEJIANG JINGKAI ELECTRIC Co Ltd
Priority to CN201520832663.XU priority Critical patent/CN205069544U/en
Application granted granted Critical
Publication of CN205069544U publication Critical patent/CN205069544U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a thermal element mechanism of circuit breaker, including thermal element, bimetallic strip with be used for the electroplax that connects of connecting circuit, wherein: the thermal element is the setting of U font, the opening part both ends of thermal element are connected respectively and are connect the electroplax, the thermal element includes heat transfer plate and the fixed plate that prevents that the thermal element warp, through the aforesaid setting, and the thermal element of U font setting, when being connected to the circuit, its cross -sectional area is less to having great resistance, having better heat producing capability, and the thermal element is the setting of U font, occupation space is little, and collecting layers is also less, the thermal element generates heat when the circuit breaker is had an effect, and the automatic cooling of normal during operation takes place ann effect, can influence hot element structure's stability, the joining intermediate layer in the thermal element prevents what the thermal element was out of shape, has guaranteed circuit breaker inner structure's stability, the life of the equipment that has lengthened.

Description

The thermal element mechanism of circuit breaker
Technical field
The utility model relates to a kind of heat engine structure, and more particularly, it relates to a kind of thermal element mechanism of circuit breaker.
Background technology
Circuit breaker refer to the electric current that can close, carry and cut-off under normal loop condition and can close, the switching device of carrying and the electric current under cut-offfing abnormal loop condition in official hour.
Thermal release device for plastic circuit breaker is in the market made up of parts such as bimetal leaf, thermal element, draw bars; when rated current flows through thermal element or bimetal leaf; through after a period of time; bimetal leaf directly generates heat bending or induction heater element heat is bending; be arranged on bimetal leaf adjustment screw by adjustment again draw bar is promoted; operating mechanism is threaded off, circuit breaker disjunction, realize the overload protection to circuit.Wherein thermal element is generally straight plate or folding shape plate, and requisite space is comparatively large, and thermal element is annealed after a longer time of use, and thermal element bends the situation such as softening.
Application number is that the Chinese patent of CN201220159410.7 discloses a kind of heating element for residual current circuit breaker, it comprise U-shaped supporting bracket district and be positioned at both sides, U-shaped supporting bracket district meet electroplax district, although the lower and manufacturing procedure of the thermal element cost of this structure more simplifies, crooked position annealing softening is easily out of shape after a long time use.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is the thermal element mechanism providing a kind of on-deformable circuit breaker.
For achieving the above object, the utility model provides following technical scheme: a kind of thermal element mechanism of circuit breaker, comprise thermal element, bimetal leaf and connect electroplax for connecting circuit, wherein: described thermal element is that U-shaped is arranged, the opening part two ends of described thermal element connect respectively and connect electroplax, and described thermal element comprises heat transfer plate and the fixed head preventing thermal element to be out of shape.
By adopting technique scheme, the thermal element that U-shaped is arranged, when being connected to circuit, its cross-sectional area is less, thus there is larger resistance, and better to the sensitiveness of electric current, and thermal element is U-shaped setting, take up room little, material requested is also less, and has strip crevice in the middle of U-shaped structure, thus can carry out air circulation, heat is shed in time, avoids annealing; Thermal element generates heat when circuit breaker is had an effect, and automatically lowers the temperature during normal work, and the effect of annealing occurs, the stable of thermal element structure can be affected, the interlayer that adds in thermal element prevents thermal element to be out of shape, and ensure that the stability of circuit breaker internal structure, the useful life of the equipment extended.
The utility model is set to further: described heat transfer plate is set to two pieces, and described fixing plate clamp is held between two pieces of heat transfer plates.
By adopting technique scheme, the setting of two heat transfer plate ensure that the current sensitivity of heat transfer plate, can generate heat in time, thus driving circuit breaker work, fixing plate clamp is held between two plates, can avoid the two-way bending of two heat transfer plates, there is good fixed effect, ensure that the stable of structure.
The utility model is set to further: described fixed head adopts wolfram steel material.
By adopting technique scheme, wolfram steel has very high hardness, and shape also remains unchanged substantially at a higher temperature, is not afraid of annealing, thus well can protect thermal element, avoids thermal element deformation annealing, affects the use of circuit breaker thus causes danger.
The utility model is set to further: described bimetal leaf is that U-shaped is arranged, and the two ends of described thermal element are corresponding with the end positions of bimetal leaf, and described thermal element and bimetal leaf are jointly and connect electroplax and be riveted together.
By adopting technique scheme, bimetal leaf and thermal element and connect the common riveted joint of electroplax, link position is less, and structure is compacter, and while the heat transfer position of bimetal leaf can be contacted with thermal element, ensure that the realization of heat transfer.
The utility model is set to further: described bimetal leaf bends in the direction of the curved end position of corresponding thermal element to thermal element, and described bimetal leaf is provided with flange with threaded hole, described flange in the bending place of bimetal leaf away from the one end connecing electroplax.
By adopting technique scheme, bimetal leaf sets out flange towards the bending of thermal element, on flange with screwed hole for installing draw bar, the position of draw bar has been set to the top of thermal element, thus the space saved shared by integrated model, make compact conformation, be conducive to laying of the element in circuit breaker internal space.
Accompanying drawing explanation
Fig. 1 is the structural representation of the thermal element side of the utility model embodiment;
Fig. 2 is the structural representation of the bimetal leaf side of the utility model embodiment.
Accompanying drawing illustrates: 1. thermal element; 11. fixed heads; 12. heat transfer plates; 2. bimetal leaf; 21. flanges; 3. connect electroplax.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model embodiment is explained.
A kind of thermal element mechanism of circuit breaker, comprise thermal element 1, bimetal leaf 2 and connect electroplax 3, it is characterized in that: thermal element 1 is arranged in U-shaped, the opening two ends of thermal element 1 connect respectively and connect electroplax 3, connect electroplax 3 for connecting circuit, the fixed head 11 that thermal element 1 comprises heat transfer plate 12 and prevents thermal element 1 to be out of shape; Heat transfer plate 12 is set to two pieces, and fixed head 11 is clamped between two pieces of heat transfer plates 12; Fixed head 11 adopts wolfram steel material; Bimetal leaf 2 is arranged in U-shaped, and the two ends of thermal element 1 are corresponding with the end positions of bimetal leaf 2, and thermal element 1 and bimetal leaf 2 are jointly and connect electroplax 3 and be riveted together; The direction of bimetal leaf 2 in the curved end position of corresponding thermal element 1 to thermal element 1 bends, and bimetal leaf 2 is provided with flange 21 with threaded hole, and flange 21 is in the bending place of bimetal leaf 2 and away from the one end connecing electroplax 3.
Principle of the present utility model is: the thermal element 1 that U-shaped is arranged, and when being connected to circuit, its cross-sectional area is less, thus has larger resistance, better to the sensitiveness of electric current, and thermal element 1 is arranged in U-shaped, and take up room little, material requested is also less; And in the middle of U-shaped structure, there is strip crevice, thus can air circulation be carried out, heat is shed in time, avoids thermal element 1 to anneal; Thermal element 1 generates heat when circuit breaker is had an effect, automatically lower the temperature during normal work, there is the effect of annealing, the stable of thermal element 1 structure can be affected, the interlayer that adds in thermal element 1 prevents thermal element 1 to be out of shape, ensure that the stability of circuit breaker internal structure, the useful life of the equipment extended; The setting of two heat transfer plate 12 ensure that the current sensitivity of heat transfer plate can generate heat in time, thus drives circuit breaker work, fixed head 11 is clamped between two heat transfer plates 12, the two-way bending of two heat transfer plates 12 can be avoided, there is good fixed effect, ensure that the stable of structure; Wolfram steel has very high hardness, and shape also remains unchanged substantially at a higher temperature, is not afraid of annealing, thus can well protect thermal element 1, avoids thermal element 1 deformation annealing, affects the use of circuit breaker thus cause danger; Bimetal leaf 2 is with thermal element 1 and connect the common riveted joint of electroplax, and link position is less, and structure is compacter, and the heat transfer position of bimetal leaf 2 can be contacted with thermal element 1 simultaneously, ensure that the realization of heat transfer; Bimetal leaf 2 sets out flange 21 towards the bending of thermal element 1, on flange 21 with screwed hole for installing draw bar, the position of draw bar is set to the top of thermal element 1, thus the space saved shared by integrated model, make compact conformation, be conducive to laying of the element in circuit breaker internal space.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (5)

1. the thermal element mechanism of a circuit breaker, comprise thermal element, bimetal leaf and connect electroplax for connecting circuit, it is characterized in that: described thermal element is that U-shaped is arranged, the opening part two ends of described thermal element connect respectively and connect electroplax, and described thermal element comprises heat transfer plate and the fixed head preventing thermal element to be out of shape.
2. the thermal element mechanism of a kind of circuit breaker according to claim 1, is characterized in that: described heat transfer plate is set to two pieces, described fixing plate clamp is held between two pieces of heat transfer plates.
3. the thermal element mechanism of a kind of circuit breaker according to claim 1, is characterized in that: described fixed head adopts wolfram steel material.
4. the thermal element mechanism of a kind of circuit breaker according to claim 1, it is characterized in that: described bimetal leaf is that U-shaped is arranged, the two ends of described thermal element are corresponding with the end positions of bimetal leaf, described thermal element and bimetal leaf common with connect electroplax and be riveted together.
5. the thermal element mechanism of a kind of circuit breaker according to claim 1, it is characterized in that: described bimetal leaf bends in the direction of the curved end position of corresponding thermal element to thermal element, described bimetal leaf is provided with flange with threaded hole, described flange in the bending place of bimetal leaf away from the one end connecing electroplax.
CN201520832663.XU 2015-10-26 2015-10-26 Thermal element mechanism of circuit breaker Expired - Fee Related CN205069544U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520832663.XU CN205069544U (en) 2015-10-26 2015-10-26 Thermal element mechanism of circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520832663.XU CN205069544U (en) 2015-10-26 2015-10-26 Thermal element mechanism of circuit breaker

Publications (1)

Publication Number Publication Date
CN205069544U true CN205069544U (en) 2016-03-02

Family

ID=55396064

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520832663.XU Expired - Fee Related CN205069544U (en) 2015-10-26 2015-10-26 Thermal element mechanism of circuit breaker

Country Status (1)

Country Link
CN (1) CN205069544U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107154327A (en) * 2017-05-24 2017-09-12 常熟瑞特电气股份有限公司 Overload release, Thermomagnetic type trip gear and breaker for breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107154327A (en) * 2017-05-24 2017-09-12 常熟瑞特电气股份有限公司 Overload release, Thermomagnetic type trip gear and breaker for breaker

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160302

Termination date: 20181026

CF01 Termination of patent right due to non-payment of annual fee