CN202678255U - Thermal trip-out device and electric protection device thereof - Google Patents
Thermal trip-out device and electric protection device thereof Download PDFInfo
- Publication number
- CN202678255U CN202678255U CN 201220290336 CN201220290336U CN202678255U CN 202678255 U CN202678255 U CN 202678255U CN 201220290336 CN201220290336 CN 201220290336 CN 201220290336 U CN201220290336 U CN 201220290336U CN 202678255 U CN202678255 U CN 202678255U
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- Prior art keywords
- pull bar
- kink
- bimetal elements
- dropout pull
- dropout
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Abstract
The utility model discloses a thermal trip-out device and an electric protection device thereof. The thermal trip-out device comprises a metal support, a thermal double metal element, a tripping drawbar, and an adjusting screw assembly. Two ends of the metal support are respectively fixed. One end of the thermal double metal element is fixedly connected with one end of the metal support in a welded manner, and the other end of the thermal double metal element is configured to be a free end. One end of the tripping drawbar is connected with a mechanism trip device, and the other end is configured to be a bending part. The bending part of the tripping drawbar is slidably disposed close to the thermal double metal element in a cooperated manner, and a gap is arranged between the bending part of the tripping drawbar and the free end of the thermal double metal element. The adjusting screw assembly is cooperated with the bending part of the other end of the tripping drawbar, and can be used to adjust the position or the angle of the bending part of the adjusting screw assembly, therefore the gap arranged between the bending part of the tripping drawbar and the free end of the thermal double metal element can be changed. By using the structure, the performance of the breaker or other electric protection devices using the above mentioned device can be stable and reliable, and the thermal trip-out device has advantages of simple structure, relatively small size, and higher operation reliability.
Description
Technical field
The utility model relates to electric protection equipment, particularly relates to a kind of thermal tripping device for circuit breaker and comprises the electric protection equipment of this device.
Background technology
Low-voltage circuit breaker is a kind of electric protection equipment, and low-voltage circuit breaker includes magnetic tripgear and thermal tripping device usually, and wherein, the magnetic tripgear is designed to make the breaker mechanism tripping operation in the situation that large electric current occurs suddenly in short circuit etc.; The thermal tripping device then is designed in the situation that transship and wait electric current low speed to increase to make the breaker mechanism tripping operation within the time of agreement.The thermal tripping device of the low-voltage circuit breaker of prior art, such as Fig. 1, shown in Figure 2, this thermal tripping device is included in Bimetal Elements 1 ＇ that can drive the breaker mechanism tripping operation under the overheat condition, elastic metal rack 2 ＇ that are used for the stationary heat bimetallic element, these elastic metal rack 2 ' one ends are fixed in the corresponding groove of shell of circuit breaker by ledge arrangement, the end that the other end of this elastic metal rack 2 ＇ is cantilever position and Bimetal Elements 1 ＇ is weldingly connected and connects, thereby make between the other end and Bimetal Elements 1 ＇ of elastic metal rack 2 ＇, one side forms a fixed connection and Bimetal Elements 1 ＇ is formed resiliency supported, also forms on the other hand conduction and connects; The other end of Bimetal Elements 1 ＇ forms free end 11 ＇, one is used for the lead agency trip gear and realizes that dropout pull bar 3 ＇ of dropout action are located between free end 11 ＇ of mechanical releasing device and Bimetal Elements 1 ＇, the end of this dropout pull bar 3 ＇ is to be connected to realize the action of lead agency trip gear with mechanical releasing device, the other end then be slidably disposed on Bimetal Elements 1 ＇ free end 11 ＇ near, when overload causes electric current low speed to increase, Bimetal Elements 1 ＇ is subject to unconventional heat and produces bending, free end 11 ＇ of Bimetal Elements 1 ＇ can drive dropout pull bar 3 ＇ action, and dropout pull bar 3 ＇ then lead agency trip gear make mechanism's tripping operation; Between free end 11 ＇ of Bimetal Elements 1 ＇ and dropout pull bar 3 ＇, there is a spacing h, connection at the end of the other end of elastic metal rack 2 ＇ and Bimetal Elements 1 ＇, be typically provided with set screw assembly 4 ＇ that regulate the Bimetal Elements position, this set screw assembly 4 ＇ are located at this side of Bimetal Elements, so that the elastic force of elastic metal rack 2 ＇ is applied counter-force, when transferring the thermal tripping characteristic in the school, can make the working clearance h of Bimetal Elements 1 ＇ and dropout pull bar 3 ＇ meet characteristic requirements by the position that the set screw assembly is regulated Bimetal Elements 1 ＇ against the spring force of reaction spring (other end that is equivalent to elastic metal rack 2 ＇).Fig. 1 is the not view during the set screw assembly of thermal tripping device, Fig. 2 is the view of thermal tripping device when the set screw assembly is arranged, compared as can be known by the thermal tripping device of Fig. 1 and the thermal tripping device of Fig. 2, after overregulating, the working clearance h of Bimetal Elements 1 ＇ and dropout pull bar 3 ＇ has diminished.
Yet this class thermal tripping device is regulated its thermal tripping characteristic by the position of regulating Bimetal Elements 1 ＇, its Bimetal Elements 1 ＇ that is in operation relies on the elasticity of reaction spring (other end that is equivalent to elastic metal rack 2 ＇) and support itself and set screw compound action and is in the flexible fastening state, along with thereby the passing reaction spring of product service time and support make its position produce drift because being heated for a long time with producing the stress that annealing effect makes its elastic force decay change Bimetal Elements, so its thermal tripping characteristic will change even lose efficacy.
The utility model content
One of the purpose of this utility model is to overcome the deficiency of prior art; a kind of thermal tripping device and electric protection equipment thereof are provided; its can in the situation that as after the overload electric current low speed increase within the time of agreement that bending by Bimetal Elements comes the driving mechanism tripping operation and can be reliable in whole working life; firmly and stably thereby the stationary heat bimetallic element electric protection device characteristics such as circuit breaker that its working clearance with the dropout pull bar remained unchanged guarantee this device of use are reliable and stable, and have simple in structure; less and the higher characteristics of operating reliability of size.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of thermal tripping device comprises:
One metallic support is used for fixing Bimetal Elements and electric action, and the two ends of this metallic support all are fixed;
One Bimetal Elements, an end of Bimetal Elements and the welding of an end of metallic support fix, and the other end of Bimetal Elements is made as free end;
One dropout pull bar, one end of dropout pull bar is connected with the mechanical releasing device that presets, the other end is set as kink, the kink of dropout pull bar be slidingly fitted in Bimetal Elements near, and and the free end of Bimetal Elements between be provided with a gap of presetting; With
One set screw assembly is engaged in the kink place of the other end of dropout pull bar, thereby is used for regulating the size in the gap between the free end of the position of kink of dropout pull bar or kink that angle changes the dropout pull bar and Bimetal Elements.
Described set screw assembly comprises screw and nut, and described screw spins with described nut and matches, and the end of screw is resisted against the kink place of dropout pull bar.
Described screw is the inclination mode to the kink to the dropout pull bar.
A kind of electric protection equipment, comprise housing, contact mechanism, operating mechanism, electromagnetic trip device and thermal tripping device, contact mechanism, operating mechanism, electromagnetic trip device and thermal tripping device are contained in respectively in the housing, and operating mechanism, electromagnetic trip device and thermal tripping device are connected with contact mechanism by mechanical releasing device respectively; This thermal tripping device comprises:
One metallic support is used for fixing Bimetal Elements and electric action, and the two ends of this metallic support are separately fixed in the housing;
One Bimetal Elements, this Bimetal Elements is contained in the housing, and an end of Bimetal Elements and the welding of an end of metallic support fix, and the other end of Bimetal Elements is made as free end;
One dropout pull bar, this dropout pull bar is contained in the housing, and an end of dropout pull bar is connected with mechanical releasing device, and the other end is set as kink, the kink of dropout pull bar be slidingly fitted in Bimetal Elements near, and and the free end of Bimetal Elements between be provided with a gap of presetting; With
One set screw assembly, this set screw assembly is installed in the housing and is engaged in the kink place of the other end of dropout pull bar, thereby is used for regulating the size in the gap between the free end of the position of kink of dropout pull bar or kink that angle changes the dropout pull bar and Bimetal Elements.
Described set screw assembly comprises screw and nut, and described screw spins with described nut and matches, and nut is fixed in the housing and makes the end of screw be resisted against the kink place of dropout pull bar.
Described screw is the inclination mode to the kink to the dropout pull bar.
Described metallic support is terminal block.
A kind of thermal tripping device of the present utility model and electric protection equipment thereof; to change the structure that original set screw assembly is regulated the position of Bimetal Elements into structure that the set screw assembly is regulated position or the angle of the kink of the other end of dropout pull bar; after the improvement; Bimetal Elements is rigidly fixed, can eliminate original Bimetal Elements and rely on the elasticity of reaction spring and support itself and set screw compound action and be in the drawback that the flexible fastening state brings.
The beneficial effects of the utility model are, owing to having adopted metallic support, Bimetal Elements, dropout pull bar and set screw assembly, and the two ends of metallic support all are fixed, one end of Bimetal Elements and the welding of an end of metallic support fix, and the other end of Bimetal Elements is made as free end; One end of dropout pull bar is connected with the mechanical releasing device that presets, and the other end is set as kink, the kink of dropout pull bar be slidingly fitted in Bimetal Elements near, and and the free end of Bimetal Elements between be provided with a gap of presetting; The set screw assembly is engaged in the kink place of the other end of dropout pull bar, thereby be used for to regulate the size in the gap between the free end of the position of kink of dropout pull bar or kink that angle changes the dropout pull bar and Bimetal Elements.Compared with prior art, the utility model can bring following beneficial effect:
The one,, Bimetal Elements is reliably rigidly fixed, and can not produce displacement when transferring product overload characteristic and subsequent product to use in the school and causes the product overload characteristic to lose efficacy;
The 2nd,, not production of metallic support deformation when transferring the product overload characteristic in the school effectively solves the metallic support deformation Fatigue Failures of existing product;
The 3rd,, the gearratio of adjustment screw and product delayed releasing gap h is fixed and is controlled, greatly reduce the degree of difficulty of batch production, adjusting screw position (is located near the kink near the other end of dropout pull bar, also be the free-ended position near Bimetal Elements) be more suitable for production operation, effectively improving production efficiency;
The 4th,, to adjust screw and be installed in the housing, the position is hidden, does not affect product appearance.
Below in conjunction with drawings and Examples the utility model is described in further detail; But a kind of thermal tripping device of the present utility model and electric protection equipment thereof are not limited to embodiment.
Description of drawings
Fig. 1 is the structural representation of the thermal tripping device (screw is regulated front) of prior art;
Fig. 2 is the structural representation of the thermal tripping device (screw is regulated rear) of prior art;
Fig. 3 is the schematic perspective view of the structure of electric protection equipment of the present invention;
Fig. 4 is the floor map of the structure of electric protection equipment of the present invention (screw is regulated front);
Fig. 5 is the floor map of the structure of electric protection equipment of the present invention (screw is regulated rear).
Embodiment
Embodiment, to shown in Figure 5, a kind of thermal tripping device of the present utility model comprises referring to Fig. 3:
One metallic support 2 is used for fixing Bimetal Elements 1 and electric action, and the two ends of this metallic support 2 all are fixed;
One Bimetal Elements 1, an end of Bimetal Elements 1 and the welding of an end of metallic support 2 fix, and the other end 11 of Bimetal Elements is made as free end;
One dropout pull bar 3, one end of dropout pull bar 3 is connected with the mechanical releasing device that presets, the other end is set as kink 31, the kink 31 of dropout pull bar be slidingly fitted in Bimetal Elements near, and and the free end 11 of Bimetal Elements between be provided with a gap h who presets; With
One set screw assembly 4 is engaged in kink 31 places of the other end of dropout pull bar 3, thereby is used for regulating the size of the gap h between the free end 11 of the position of kink 31 of dropout pull bar or kink 31 that angle changes the dropout pull bar and Bimetal Elements.
Described set screw assembly 4 comprises screw 41 and nut 42, and described screw 41 spins with described nut 42 and matches, and the end of screw 41 is resisted against kink 31 places of dropout pull bar.
Described screw 41 is the inclination mode to the kink 31 to the dropout pull bar.
A kind of electric protection equipment of the present utility model, the present embodiment is a kind of circuit breaker, this circuit breaker comprises housing 51, contact mechanism 52, operating mechanism 53, electromagnetic trip device and thermal tripping device, contact mechanism 52, operating mechanism 53, electromagnetic trip device and thermal tripping device are contained in respectively in the housing 51, and operating mechanism 53, electromagnetic trip device and thermal tripping device are connected with contact mechanism 52 by mechanical releasing device 54 respectively; Contact mechanism 52 includes moving contact 521 and fixed contact 522, and operating mechanism 53 is used for being activated with each contact of opening and closing by handle 531; Electromagnetic trip device is designed to make when being short-circuited electric current the mechanical releasing device tripping operation of circuit breaker also to make thus moving contact 521 and fixed contact 522 separately; The thermal tripping device is designed to make when overload current occurs the mechanical releasing device tripping operation of circuit breaker also to make thus moving contact 521 and fixed contact 522 separately.
This thermal tripping device comprises:
One metallic support 2 is used for fixing Bimetal Elements 1 and electric action, and the two ends of this metallic support 2 are separately fixed in the housing 51;
One Bimetal Elements 1, this Bimetal Elements 1 is contained in the housing 51, and an end of Bimetal Elements 1 and the welding of an end of metallic support 2 fix, and the other end of Bimetal Elements 1 is made as free end 11;
One dropout pull bar 3, this dropout pull bar 3 is contained in the housing 51, one end of dropout pull bar 3 is connected with mechanical releasing device 54, the other end is set as kink 31, the kink 31 of dropout pull bar be slidingly fitted in Bimetal Elements 1 near, and and the free end 11 of Bimetal Elements between be provided with a gap h who presets; With
One set screw assembly 4, this set screw assembly 4 is installed in the housing 51 and is engaged in kink 31 places of the other end of dropout pull bar 3, thereby is used for regulating the size of the gap h between the free end of the position of kink 31 of dropout pull bar or kink that angle changes the dropout pull bar and Bimetal Elements.
Described set screw assembly 4 comprises screw 41 and nut 42, and described screw 41 spins with described nut 42 and matches, and nut 42 is fixed in the housing 51 and makes the end of screw 41 be resisted against kink 31 places of dropout pull bar.
Described screw 41 is the inclination mode to the kink 31 to the dropout pull bar.
Described metallic support 2 is terminal block.
The thermal tripping device of Fig. 4 and the thermal tripping device of Fig. 5 are compared as can be known, and after overregulating, Bimetal Elements 1 has diminished with the working clearance h of dropout pull bar 3.
A kind of thermal tripping device of the present utility model and electric protection equipment thereof; to change the structure that original set screw assembly is regulated the position of Bimetal Elements into structure that the set screw assembly is regulated position or the angle of the kink of the other end of dropout pull bar; after the improvement; Bimetal Elements 1 is rigidly fixed, can eliminate original Bimetal Elements and rely on the elasticity of reaction spring and support itself and set screw compound action and be in the drawback that the flexible fastening state brings.
Above-described embodiment only is used for further specifying a kind of thermal tripping device of the present utility model and electric protection equipment thereof; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls in the protection range of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (7)
1. thermal tripping device is characterized in that: comprising:
One metallic support is used for fixing Bimetal Elements and electric action, and the two ends of this metallic support all are fixed;
One Bimetal Elements, an end of Bimetal Elements and the welding of an end of metallic support fix, and the other end of Bimetal Elements is made as free end;
One dropout pull bar, one end of dropout pull bar is connected with the mechanical releasing device that presets, the other end is set as kink, the kink of dropout pull bar be slidingly fitted in Bimetal Elements near, and and the free end of Bimetal Elements between be provided with a gap of presetting; With
One set screw assembly is engaged in the kink place of the other end of dropout pull bar, thereby is used for regulating the size in the gap between the free end of the position of kink of dropout pull bar or kink that angle changes the dropout pull bar and Bimetal Elements.
2. thermal tripping device according to claim 1, it is characterized in that: described set screw assembly comprises screw and nut, and described screw spins with described nut and matches, and the end of screw is resisted against the kink place of dropout pull bar.
3. thermal tripping device according to claim 2 is characterized in that: described screw is the inclination mode and supports kink to the dropout pull bar.
4. electric protection equipment, comprise housing, contact mechanism, operating mechanism, electromagnetic trip device and thermal tripping device, contact mechanism, operating mechanism, electromagnetic trip device and thermal tripping device are contained in respectively in the housing, and operating mechanism, electromagnetic trip device and thermal tripping device are connected with contact mechanism by mechanical releasing device respectively; It is characterized in that: this thermal tripping device comprises:
One metallic support is used for fixing Bimetal Elements and electric action, and the two ends of this metallic support are separately fixed in the housing;
One Bimetal Elements, this Bimetal Elements is contained in the housing, and an end of Bimetal Elements and the welding of an end of metallic support fix, and the other end of Bimetal Elements is made as free end;
One dropout pull bar, this dropout pull bar is contained in the housing, and an end of dropout pull bar is connected with mechanical releasing device, and the other end is set as kink, the kink of dropout pull bar be slidingly fitted in Bimetal Elements near, and and the free end of Bimetal Elements between be provided with a gap of presetting; With
One set screw assembly, this set screw assembly is installed in the housing and is engaged in the kink place of the other end of dropout pull bar, thereby is used for regulating the size in the gap between the free end of the position of kink of dropout pull bar or kink that angle changes the dropout pull bar and Bimetal Elements.
5. electric protection equipment according to claim 4; it is characterized in that: described set screw assembly comprises screw and nut; described screw spins with described nut and matches, and nut is fixed in the housing and makes the end of screw be resisted against the kink place of dropout pull bar.
6. electric protection equipment according to claim 5 is characterized in that: described screw is the inclination mode and supports kink to the dropout pull bar.
7. electric protection equipment according to claim 4, it is characterized in that: described metallic support is terminal block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290336 CN202678255U (en) | 2012-06-19 | 2012-06-19 | Thermal trip-out device and electric protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290336 CN202678255U (en) | 2012-06-19 | 2012-06-19 | Thermal trip-out device and electric protection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678255U true CN202678255U (en) | 2013-01-16 |
Family
ID=47499139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220290336 Expired - Fee Related CN202678255U (en) | 2012-06-19 | 2012-06-19 | Thermal trip-out device and electric protection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678255U (en) |
-
2012
- 2012-06-19 CN CN 201220290336 patent/CN202678255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XIAMEN HONGFA ELECTRICAL SAFETY + CONTROLS CO., LT Free format text: FORMER NAME: XIAMEN HONGMEI ELECTRONIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jimei North Industrial Zone, Xiamen city of Fujian province Donglin road 361000 No. 566 Patentee after: XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO., LTD. Address before: Jimei North Industrial Zone, Xiamen city of Fujian province Donglin road 361000 No. 566 Patentee before: Xiamen Hongmei Electronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20170619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |