CN204167234U - Bimetallic element and the release comprising this bimetallic element - Google Patents
Bimetallic element and the release comprising this bimetallic element Download PDFInfo
- Publication number
- CN204167234U CN204167234U CN201420569665.XU CN201420569665U CN204167234U CN 204167234 U CN204167234 U CN 204167234U CN 201420569665 U CN201420569665 U CN 201420569665U CN 204167234 U CN204167234 U CN 204167234U
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- Prior art keywords
- leg
- bimetallic element
- yoke
- armature
- support
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- 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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- 238000010438 heat treatment Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Thermally Actuated Switches (AREA)
Abstract
A kind of bimetallic element and the release comprising this bimetallic element, comprise bimetallic element, support, " E " shape yoke, armature and spring, yoke is fixed on support, armature to be arranged on support and corresponding with yoke rotationally, described spring action is on armature, for armature provides restoring force, bimetallic element is plates, these plates have side by side to extend towards the same side as to the first leg of external electrical connections and the second leg, and extend the 3rd leg as brake function towards reverse opposite side, first leg and the second leg are separately positioned in two " U " connected in stars of " E " shape yoke.The utility model using the first leg of bimetallic element and the second leg as electric connecting terminal; and using the 3rd leg as motion end; make on this motion end without any wiring; so there will not be jam phenomenon; simultaneously on bimetallic element flexure operation end without any tractive, improve stability and the reliability of circuit breaker overload protection.
Description
Technical field
The utility model relates to breaker of plastic casing, particularly relates to a kind of directly-heated type release of breaker of plastic casing.
Background technology
Pyromagnetic release in existing breaker of plastic casing, effect is to provide magnetic protection and Thermal protection, Thermal protection i.e. overload protection.Common mode of heating for the Thermal protection part of release has two kinds, and one is called directly-heated type, and namely bimetallic element is connected in switch major loop, by bimetallic element loaded current; Another is called indirect-heating, and bimetallic element does not access in switching circuitry, but is coupled by techniques such as riveting, weld with heater element, carries out heating protect by heater element to bimetallic element.Heaterless design feature is convenient to miniaturization, and it is easy to rapid-releasing when realizing overload protection; Indirect-heating structure all comes from the heating of thermal element due to bimetallic element institute energy requirement, often need additional space to mate the structure of thermal element and bimetallic element, to reach better heat-transfer effect, space occupancy rate is higher than directly-heated type, and overload response speed comparatively directly-heated type want slow.The miniaturization trend of moulded case circuit breaker, the design space determining release is also compressed further.
In prior art, representative directly-heated type Pyromagnetic release, also clapper-type Pyromagnetic release can be referred to as, its structure as shown in Figure 6 and Figure 7, comprise bimetallic element 1, support 2, single yoke 3, armature (not shown in FIG.), spring (not shown in FIG.), joint cover 7 and contact 8, described bimetallic element 1, yoke 3 and armature are all arranged on support 2, described bimetallic element 1 is a strip sheet metal, its upper end is as flexure operation end, this end is electrically connected with flexible connection with joint cover 7, and its lower end opposite brackets 2 is fixed, and this lower end is electrically connected with flexible connection with contact 8.In using, bimetallic element 1 is connected in switch major loop, and when thermal overload, the flexure operation end of bimetallic element 1 can bend action, threads off with actuate circuit breaker.Due to the compact Miniaturization Design of switch; gap between bimetallic element 1 upper end and lid is less; and because the flexure operation end of bimetallic element 1 is welded with flexible connection in prior art; easily cause between flexible connection and lid and jam phenomenon occurs; simultaneously; because the soft or hard degree after flexible connection welding is different, the traction force that bimetallic element is subject to when flexure operation is also different, thus reduces stability and the reliability of circuit breaker overload protection.
Summary of the invention
The purpose of this utility model is to provide a kind of bimetallic element and comprises the release of this bimetallic element; solve prior art exist because the flexure operation end of bimetallic element is welded with flexible connection; easily cause between flexible connection and lid and jam phenomenon occurs; simultaneously; because the soft or hard degree after flexible connection welding is different; the traction force that bimetallic element is subject to when flexure operation is also different, so that the stability of circuit breaker overload protection and the not high problem of reliability.
For achieving the above object, one of the technical solution adopted in the utility model is: a kind of bimetallic element, described bimetallic element is plates, these plates have side by side extend towards the same side as to the first leg of external electrical connections and the second leg, and extend the 3rd leg as brake function towards reverse opposite side.
Two of the technical solution adopted in the utility model is: a kind of release, comprise bimetallic element, support, " E " shape yoke, armature and spring, described " E " shape yoke is fixed on support, described armature to be arranged on support and corresponding with " E " shape yoke rotationally, described spring action on armature, for armature provides restoring force; Described bimetallic element is plates, these plates have side by side to extend towards the same side as to the first leg of external electrical connections and the second leg, and extending the 3rd leg as brake function towards reverse opposite side, the first described leg and the second leg are separately positioned in two " U " connected in stars of " E " shape yoke.
In such scheme, described " E " shape yoke be two in first yoke of " U " shape and the second yoke form side by side, first leg of described bimetallic element passes " U " connected in star of the first yoke to downward-extension, and the second leg of bimetallic element passes " U " connected in star of the second yoke to downward-extension, and the 3rd leg of bimetallic element upwards extends.
Design principle of the present utility model and the effect brought are:
The utility model be on bimetallic element unique design as the 3rd leg in flexure operation portion; using the first leg of bimetallic element and the second leg as electric connecting terminal; and using the 3rd leg as motion end; make on this motion end without any wiring; although so due to switch compact design; gap between bimetallic element and lid is less; but also there will not be jam phenomenon; simultaneously on bimetallic element flexure operation end without any tractive, improve stability and the reliability of circuit breaker overload protection.
Accompanying drawing explanation
The structural representation of Fig. 1 the utility model embodiment;
The structural representation of bimetal leaf, yoke and support relativeness in Fig. 2 the utility model embodiment;
The structural representation of armature in Fig. 3 the utility model embodiment;
The structural representation of Fig. 4 the utility model embodiment medium-height trestle;
First leg of bimetal leaf and the electrical connection schematic diagram of the second leg in Fig. 5 the utility model embodiment;
Fig. 6 is the structural representation of bimetal leaf, yoke and support in prior art;
Fig. 7 is the electrical connection schematic diagram of bimetal leaf in prior art.
In above accompanying drawing: 1, bimetallic element; 11; First leg; 12, the second leg; 13, the 3rd leg; 2, support; 21, the first side wall; 211, the first support portion; 22, the second sidewall; 221, the first support portion; 23, connecting portion; 24, bending part; 241, screwed hole; 3, yoke; 31, the first yoke; 32, the second yoke; 4, armature; 41, adjustable extension angle arm; 42, actuator lever; 43, the first pivotable lug; 44, the second pivotable lug; 45, spacing lug; 5, spring; , 6, electric-conductor; 7, joint cover; 8, contact.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: shown in Fig. 1-5:
A kind of release, comprise bimetallic element 1, support 2, " E " shape yoke, armature 4, spring 5, described " E " shape yoke 3 is fixed on support 2, described armature 4 to be arranged on support 2 and corresponding with " E " shape yoke 3 rotationally, described spring 5 acts on armature 4, for armature 4 provides restoring force.
Shown in Fig. 1,2,5, described bimetallic element 1 is plates, in " h " shape, these plates have side by side to extend towards the same side as the first leg 11 and the second leg 12 to external electrical connections, and extending the 3rd leg 13 as brake function towards reverse opposite side, the first described leg 11 and the second leg 12 are separately positioned in two " U " connected in stars of " E " shape yoke 3; Described joint cover 7 and contact 8 are electrically connected the first leg 11 and the second leg 12 respectively, described joint cover 7 has electric-conductor 6, described first leg 11 is electrically connected with joint cover 7 by an electric-conductor 6, described support 2 has bending part 24, bending part 24 is provided with screwed hole 241, described support 2 is each passed through the through hole on pedestal (not shown) and electric-conductor 6 by trip bolt and the screwed hole 241 on support 2 is fixed on pedestal, and the second leg 12 is electrically connected with contact 8 with flexible connection.
Concrete, see Fig. 1, 2, shown in 5, described " E " shape yoke (3) be two in first yoke 31 of " U " shape and the second yoke 32 form side by side, they are fixed on support 2 side by side, adopt two yokes, can realize that still there is when small area analysis specification is adjusted electromagnetic attraction large, thus reliably protecting is threaded off, described bimetallic element 1 is crossed in the first yoke 31 and the second yoke 32, first leg 11 of concrete described bimetallic element 1 passes " U " connected in star of the first yoke 31 to downward-extension, and the second leg 12 of bimetallic element 1 passes " U " connected in star of the second yoke 32 to downward-extension, and the 3rd leg 13 of bimetallic element 1 upwards extends.
3rd leg 13 of concrete bimetallic element 1 is provided with adjustment screw (not shown).
During use, bimetallic element 1 is access in switch major loop, and when the overload occurs, the 3rd leg 13 of bimetallic element 1 occurs bending and deformation, thus promotes circuit breaker tripping by adjustment screw.
See Fig. 1, Fig. 2, and composition graphs 3 and Fig. 4, the first side wall 21, second sidewall 22 that support 2 has relative thirty years of age and the connecting portion 23 be connected between the first side wall 21 and the second sidewall 22.The first side wall 21 and the second sidewall 22 are respectively equipped with the first support portion 211 and the first support portion 221, and the top, both sides of armature 4 respectively relatively symmetrically horizontal expansion be provided with the first pivotable lug 43, second pivotable lug 44, and the below corresponding to any one the pivotable lug in the first pivotable lug 43, second pivotable lug 44 is also extended a spacing lug 45.First, second pivotable lug 43,44 described is contained in the first support portion 211 and the second support portion 221 respectively.Described armature 4 is also included in side, top extendedly has an actuator lever 42, opposite side is provided with adjustable extension angle arm 41, the described actuatable circuit breaker tripping of actuator lever 42, and described adjustable extension angle arm 41 is for being affiliated to spring 5.
The two ends of described spring 5 are connected on adjustable extension angle arm 41 and support 2, adjustable extension angle arm 41 forms the shift structure for regulating spring 5 one end setting position, switched between the different gear of shift structure by end, spring 5 one end, realize the different reseting elasticities of spring 5, thus meet the demand of the different drop-away current of circuit breaker.
The present embodiment be on bimetallic element 1 unique design as the 3rd leg 13 in flexure operation portion; using the first leg 11 of bimetallic element 1 and the second leg 12 as electric connecting terminal; and using the 3rd leg 13 as motion end; make on this motion end without any wiring; although so due to switch compact design; gap between bimetallic element 1 and lid is less; but also there will not be between flexible connection and lid and jam phenomenon occurs; simultaneously; due on bimetallic element flexure operation end without any tractive, improve stability and the reliability of circuit breaker overload protection.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (3)
1. a bimetallic element, it is characterized in that: described bimetallic element (1) is plates, these plates have side by side extend towards the same side as to first leg (11) of external electrical connections and the second leg (12), and towards three leg (13) of reverse opposite side extension as brake function.
2. a release, comprise bimetallic element (1), support (2), " E " shape yoke (3), armature (4) and spring (5), described " E " shape yoke (3) are fixed on support (2), it is upper and corresponding with " E " shape yoke (3) that described armature (4) is arranged on support (2) rotationally, described spring (5) acts on armature (4), for armature (4) provides restoring force; It is characterized in that: described bimetallic element (1) is plates, these plates have side by side to extend towards the same side as to first leg (11) of external electrical connections and the second leg (12), and extending the 3rd leg (13) as brake function towards reverse opposite side, described the first leg (11) and the second leg (12) are separately positioned in two " U " connected in stars of " E " shape yoke (3).
3. release according to claim 2, it is characterized in that: described " E " shape yoke (3) be two in first yoke (31) of " U " shape and the second yoke (32) form side by side, first leg (11) of described bimetallic element (1) through " U " connected in star of the first yoke (31) to downward-extension, and second leg (12) of bimetallic element (1) through " U " connected in star of the second yoke (32) to downward-extension, and the 3rd leg (13) of bimetallic element (1) upwards extends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569665.XU CN204167234U (en) | 2014-09-29 | 2014-09-29 | Bimetallic element and the release comprising this bimetallic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569665.XU CN204167234U (en) | 2014-09-29 | 2014-09-29 | Bimetallic element and the release comprising this bimetallic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204167234U true CN204167234U (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420569665.XU Expired - Lifetime CN204167234U (en) | 2014-09-29 | 2014-09-29 | Bimetallic element and the release comprising this bimetallic element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204167234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118398451A (en) * | 2024-07-01 | 2024-07-26 | 浙江天正电气股份有限公司 | Plastic case circuit breaker |
-
2014
- 2014-09-29 CN CN201420569665.XU patent/CN204167234U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118398451A (en) * | 2024-07-01 | 2024-07-26 | 浙江天正电气股份有限公司 | Plastic case circuit breaker |
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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: 20150218 |