CN103187213B - Movement mechanism of thermal overload relay - Google Patents
Movement mechanism of thermal overload relay Download PDFInfo
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- CN103187213B CN103187213B CN201110453202.8A CN201110453202A CN103187213B CN 103187213 B CN103187213 B CN 103187213B CN 201110453202 A CN201110453202 A CN 201110453202A CN 103187213 B CN103187213 B CN 103187213B
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- rigid support
- thermal overload
- overload relay
- breaking
- bulk
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Abstract
The invention discloses a movement mechanism of a thermal overload relay. The movement mechanism comprises a blade and a rigid support which is fixedly connected with the bottom of the blade; a bimetallic element bends and deforms under overcurrent effects, a transmission mechanism pushes the blade to skip to accordingly drive a relay contact, the rigid support comprises a first end and a second end, a first component in a rotation shaft assembly is further arranged on the rigid support, the first component is located between the first end and the second end, and the first component is a rotation supporting point of the rigid support, the first end is connected with a force exerting piece, first moment is produced by the force exerting piece on the rigid support, the second end is connected with an elastic component, and second moment for compensating the first moment is produced by the elastic component on the rigid support. Assembly between the rigid support of the blade and a casing is limited through a rotation shaft, and purposes of assembling and pokayoke can be effectively achieved. A blade assembly is not influenced by exogenous process of assembly, and an assembling process is smooth.
Description
Technical field
The invention belongs to relay field, relate to a kind of actuating mechanism of thermal overload relay specifically.
Background technology
Thermal overload relay is by the current generates heat flowing into thermal element, makes the bimetallic element generation deformation of the different coefficient of expansion, when deformation reaches certain distance, just promotes connecting rod action, control circuit is disconnected, realizes overload protection.The actuating mechanism of this kind of relay, general blade has two stable stop positions, and the conversion of spring leaf between two position of rests is unexpected.The rigid support of blade is fixed or spacing on the housing of relay, and blade directly or indirectly drives contact action.
Above-mentioned actuating mechanism is the French patent application of FR1274608A, the European patent application of publication number EP0360215A2 at publication number, and notification number is all have description in China's mandate patent of invention of CN1192405C.
Wherein Chinese invention patent CN1192405C relate to a kind of thermorelay being provided with spring leaf mechanism, and blade bottom connects one end of rigid support, and the other end of rigid support has anchor point, can rotate on the fixed span fitting of housing.Rigid support is also connected with regulating element, and this regulating element has cam face, by this regulating element effect, can make rigid support together with blade around the axis of rotation determined by inter-access piece and anchor point, adjust the position of vane tip.In this scheme, blade assembly affects by its flexible tail leg, smooth and easy not with the assembling process of housing, affect efficiency of assembling, in addition, rigid support and housing do not have fool proof measure (guaranteeing to be seated) in the assembling of run-on point yet, are therefore necessary to consider new mechanism scheme.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of actuating mechanism of thermal overload relay, facilitates the assembling of production process Leaf assembly on product, makes the assembling between blade assembly and housing have fool proof effect.
The present invention is by the following technical solutions:
An actuating mechanism for thermal overload relay, comprises blade, and the rigid support be fixedly connected with described blade bottom; Bimetallic element is out of shape at overload current flex under action, described blade redirect is promoted through transmission mechanism, thus drive relay contact, described rigid support comprises first, second end, described rigid support is also provided with the first bulk-breaking in rotating assembly, described first bulk-breaking is between first, second end described, and be the rotating fulcrum of rigid support, described first end connects force-applying piece, this force-applying piece produces the first moment to rigid support, described second end connects flexible member, and this flexible member produces the second moment of compensation first moment to rigid support.
Further, described force-applying piece is screw, and when described screw rotates, the first end of described rigid support moves along screw axis.
Preferably, the first end of described rigid support establishes screwed hole, and described screw is in described screwed hole, and the end of screw withstands on the housing of described thermal overload relay.
Preferably, the housing of described thermal overload relay is provided with screwed hole, and described screw is in described screwed hole, and the end of screw withstands on the first end of described rigid support.
Further, described flexible member is extension spring, and described extension spring one end is connected with the second end of described rigid support, and the other end of extension spring is fixed on the housing of described thermal overload relay.
Further, the housing of described thermal overload relay is provided with the second bulk-breaking in rotating assembly, and described first bulk-breaking coordinates with described second bulk-breaking.
Preferably, described first bulk-breaking is axle, and is fixed in rigid support, and described second bulk-breaking is axle sleeve.
Preferably, described first bulk-breaking is axle sleeve, and is fixed in rigid support, and described second bulk-breaking is axle.
Further, described rigid support is L shape, comprises vertical component effect and horizontal part, and described first end is on described vertical component effect, and described blade bottom and vertical component effect are fixed; Described second end is on described horizontal part, and the first bulk-breaking in described rotating assembly is located on horizontal part.
Assembling between the rigid support of blade and housing is retrained by rotating shaft, effectively reaches assembling fool proof object.The External Force Acting of the unaffected assembling of blade assembly, assembling process is smooth and easy.
Have extension spring between the rigid support of blade and housing, to provide clockwise rotating torque to blade assembly, the bottom that blade rigid is supported is acted on housing by screw pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the actuating mechanism of the thermal overload relay that the present invention relates to.
Fig. 2 is the structural representation of a kind of embodiment of the actuating mechanism Leaf assembly (together with rigid support) of the thermal overload relay that the present invention relates to.
Fig. 3 is the structural representation of a kind of embodiment of force-applying piece (screw) in the actuating mechanism of the thermal overload relay that the present invention relates to.
Fig. 4 is the structural representation of the another kind of embodiment of force-applying piece (screw) in the actuating mechanism of the thermal overload relay that the present invention relates to.
Detailed description of the invention
See Fig. 1, it is the structural representation of the actuating mechanism of thermal overload relay that the present invention relates to.Described actuating mechanism is arranged on the housing 4 interior (in Fig. 1 not shown complete housing) of thermal overload relay.
Be provided with bimetallic element 7, top plate member 6, lever assembly 12, blade 1, rigid support 5, contact push rod 8 and clapper-type in housing 4 and often open (NO), normally closed (NC) contact 9,11.Described bimetallic element 7 connects top plate member 6, and described top plate member 6 is also connected with one end of lever assembly 12.Lever assembly 12 rotates around fulcrum A, and the other end of lever assembly 12 contacts with the contact t in the middle part of blade 1.Described top plate member 6, lever assembly 12 constitute transmission mechanism jointly.In FIG, top plate member 6 provides for simplification, the lever both generally including upper and lower top board and being connected, and lever assembly 12 is also simplify to provide, generally include transmission levers, one section of bimetallic element for ambient temperature compensation, the adjusting knob of the action gap that changes in addition.
Composition graphs 1, Fig. 2, be fixedly connected with rigid support 5, and do not have flexible feet bottom blade 1.The middle part of blade 1 is provided with the contact t come in contact with lever assembly 12.The top of blade 1 is connected to contact push rod 8.Described contact push rod 8 is also connected to normally open contact 9, normally closed interlock 11.
The course of work of thermal overload relay is as follows: bimetallic element 7 is out of shape at the flex under action of overload current, top plate member 6 is driven to show to move in the direction of X1 along Fig. 1, lever assembly 12 is made to turn clockwise around fulcrum A like this, then the contact t on blade 1 is promoted, there is redirect in blade 1, position shown in dotted line is chosen from diagram solid line position, and be with moving contact push rod 8 to move along X2 direction, make normally open contact 9 from solid line for position shown in dotted line is jumped in position, occur closed, normally closed interlock 11 is made to jump to position shown in dotted line from solid line position, open, finally realize overload protection.
Described rigid support 5 comprises first, second end 51,52, described rigid support 5 is also provided with the first bulk-breaking 21 in rotating assembly 2, described first bulk-breaking 21 is between first, second end 51,52 described, and be the rotating fulcrum of rigid support 5, described first end 51 connects force-applying piece, this force-applying piece produces the first moment to rigid support 5, and described second end 52 connects flexible member, and this flexible member produces the second moment of compensation first moment to rigid support 5.The rigid support 5 activity supporting point B that can rotate rotates, and that is rigid support 5 can the housing 4 of thermal overload relay relatively relatively rotate.Described rigid support 5 is another group leverage, and for Fig. 1, force-applying piece produces a counterclockwise moment to rigid support 5, can produce a counterclockwise moment with balance at the flexible member of the other end simultaneously.When force-applying piece is had an effect, rigid support 5 can be promoted slight rotation occurs, like this position on energy adjusting vane 1 top.In addition, rotating assembly 2 facilitates the installation of rigid support 5 (together with blade 1), has the function of fool proof.
Described force-applying piece is preferably the screw 10 of fine thread, and when described screw 10 rotates, the first end 51 of described rigid support 5, therefore can adjusting vane 1 apical position along screw 10 axial-movement.See Fig. 3, the first end 51 of described rigid support 5 establishes screwed hole, and described screw 10 is in described screwed hole, and the end of screw 10 withstands on the housing 4 of described thermal overload relay.Because screw 10 withstands on housing 4, when screw 10 pairs of first ends 51 apply pressure, first end 51 also just can be made to move towards screw 10 head, produce counterclockwise moment.Described flexible member is extension spring 3, and described extension spring 3 one end is connected with the second end 52 of described rigid support 5, and the other end of extension spring 3 is fixed on the housing 4 of described thermal overload relay.Now extension spring 3 is stressed, therefore can produce clockwise moment.
Or also can arrange by mode as shown in Figure 4, the housing 4 of described thermal overload relay is provided with screwed hole, described screw 10 is in described screwed hole, and the end of screw 10 withstands on the first end 51 of described rigid support 5.Screw 10 is located on the side of the rigid support 5 contrary with above-mentioned Fig. 3.Because housing 4 is fixed wtih, when screw 10 applies pressure, end can push the first end 51 of rigid support 5, can produce clockwise moment equally.And on the second end 52, extension spring 3 is stressed, therefore clockwise moment can be produced.
Described rotating assembly 2 comprises first, second bulk-breaking.The housing 4 of thermal overload relay is provided with the second bulk-breaking in rotating assembly 2, and described first bulk-breaking 21 coordinates with described second bulk-breaking.Therefore, as long as the first bulk-breaking 21 inserts in the second bulk-breaking or is enclosed within outside the second bulk-breaking, just the assembling of simply and accurately rigid support 5 can be realized.Described first bulk-breaking 21 is axle, and is fixed in rigid support 5, and so now described second bulk-breaking is axle sleeve.Or described first bulk-breaking 21 is axle sleeve, and is fixed in rigid support 5, and so described second bulk-breaking is axle.
Get back to Fig. 1, described rigid support 5 is preferably L shape, comprises vertical component effect and horizontal part.More preferably, be connected by a bit of arc portion between vertical component effect with horizontal part.Described first end 51 on described vertical component effect, and is fixed with vertical component effect bottom described blade 1; Described second end 52 is on described horizontal part, and the first bulk-breaking 21 in described rotating assembly 2 is located on horizontal part.
Can be found out by above-mentioned explanation, during assembling, the assembling between the rigid support 5 of blade 1 and housing 4 is retrained by rotating shaft, effectively reaches assembling fool proof object, and blade 1 can not the External Force Acting of influenced assembling, makes assembling process obviously smooth and easy.In addition, by adjustment screw 10, the object of adjusting vane 1 apical position can be reached.
Claims (9)
1. an actuating mechanism for thermal overload relay, comprises blade (1), and the rigid support (5) be fixedly connected with the bottom of described blade (1), bimetallic element (7) is out of shape at overload current flex under action, described blade (1) redirect is promoted through transmission mechanism, thus drive relay contact (9, 11), it is characterized in that: described rigid support (5) comprises first, second end (51, 52), described rigid support (5) is also provided with the first bulk-breaking (21) in rotating assembly (2), described first bulk-breaking (21) is positioned at described first, second end (51, 52) between, and be the rotating fulcrum of rigid support (5), described first end (51) connects force-applying piece, this force-applying piece produces the first moment to rigid support (5), described second end (52) connects flexible member, this flexible member produces the second moment of compensation first moment to rigid support (5).
2. the actuating mechanism of thermal overload relay according to claim 1, it is characterized in that: described force-applying piece is screw (10), when described screw (10) rotates, the first end (51) of described rigid support (5) is along screw (10) axial-movement.
3. the actuating mechanism of thermal overload relay according to claim 2, it is characterized in that: the first end (51) of described rigid support (5) establishes screwed hole, described screw (10) is in described screwed hole, and the end of screw (10) withstands on the housing (4) of described thermal overload relay.
4. the actuating mechanism of thermal overload relay according to claim 2, it is characterized in that: the housing (4) of described thermal overload relay is provided with screwed hole, described screw (10) is in described screwed hole, and the end of screw (10) withstands on the first end (51) of described rigid support (5).
5. the actuating mechanism of thermal overload relay according to claim 1, it is characterized in that: described flexible member is extension spring (3), described extension spring (3) one end is connected with second end (52) of described rigid support (5), and the other end of extension spring (3) is fixed on the housing (4) of described thermal overload relay.
6. the actuating mechanism of thermal overload relay according to claim 1, it is characterized in that: the housing (4) of described thermal overload relay is provided with the second bulk-breaking in rotating assembly (2), described first bulk-breaking (21) coordinates with described second bulk-breaking.
7. the actuating mechanism of thermal overload relay according to claim 6, is characterized in that: described first bulk-breaking (21) is axle, and is fixed in rigid support (5), and described second bulk-breaking is axle sleeve.
8. the actuating mechanism of thermal overload relay according to claim 6, is characterized in that: described first bulk-breaking (21) is axle sleeve, and is fixed in rigid support (5), and described second bulk-breaking is axle.
9. the actuating mechanism of thermal overload relay according to claim 1, it is characterized in that: described rigid support (5) is L shape, comprise vertical component effect and horizontal part, described first end (51) is on described vertical component effect, and the bottom of described blade (1) and vertical component effect are fixed; Described second end (52) is on described horizontal part, and the first bulk-breaking (21) in described rotating assembly (2) is located on horizontal part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110453202.8A CN103187213B (en) | 2011-12-29 | 2011-12-29 | Movement mechanism of thermal overload relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110453202.8A CN103187213B (en) | 2011-12-29 | 2011-12-29 | Movement mechanism of thermal overload relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103187213A CN103187213A (en) | 2013-07-03 |
| CN103187213B true CN103187213B (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110453202.8A Active CN103187213B (en) | 2011-12-29 | 2011-12-29 | Movement mechanism of thermal overload relay |
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| Country | Link |
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| CN (1) | CN103187213B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016210485A1 (en) * | 2016-06-14 | 2017-12-14 | Siemens Aktiengesellschaft | Electromechanical protection device with an overload release device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1274608A (en) * | 1960-09-14 | 1961-10-27 | Realisations Mecaniques S E R | Snap-action tripping device and contactor device including application |
| EP0000635A1 (en) * | 1977-07-15 | 1979-02-07 | Ranco Incorporated | Snap acting switch blade and method for manufacturing it |
| CN85107902A (en) * | 1985-10-26 | 1987-05-06 | 西屋电气公司 | Circuit breaker with bimetallic and alignment formation |
| FR2785717B1 (en) * | 1998-11-05 | 2000-12-08 | Schneider Electric Sa | THERMAL RELAY WITH SPRING BLADE MECHANISM |
| CN101364508A (en) * | 2007-08-07 | 2009-02-11 | Ls产电株式会社 | Thermal overload trip apparatus and method for adjusting trip sensitivity thereof |
| EP2091060A2 (en) * | 2008-02-13 | 2009-08-19 | Fuji Electric FA Components & Systems Co., Ltd. | Thermally operated overload relay |
| CN101958204A (en) * | 2009-07-15 | 2011-01-26 | 大陆株式会社 | Thermal overload relay |
| CN102054629A (en) * | 2009-11-10 | 2011-05-11 | 郭永明 | Digital thermorelay |
| CN202487509U (en) * | 2011-12-29 | 2012-10-10 | 上海良信电器股份有限公司 | Actuation mechanism of thermal overload relay |
-
2011
- 2011-12-29 CN CN201110453202.8A patent/CN103187213B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1274608A (en) * | 1960-09-14 | 1961-10-27 | Realisations Mecaniques S E R | Snap-action tripping device and contactor device including application |
| EP0000635A1 (en) * | 1977-07-15 | 1979-02-07 | Ranco Incorporated | Snap acting switch blade and method for manufacturing it |
| CN85107902A (en) * | 1985-10-26 | 1987-05-06 | 西屋电气公司 | Circuit breaker with bimetallic and alignment formation |
| FR2785717B1 (en) * | 1998-11-05 | 2000-12-08 | Schneider Electric Sa | THERMAL RELAY WITH SPRING BLADE MECHANISM |
| CN101364508A (en) * | 2007-08-07 | 2009-02-11 | Ls产电株式会社 | Thermal overload trip apparatus and method for adjusting trip sensitivity thereof |
| EP2091060A2 (en) * | 2008-02-13 | 2009-08-19 | Fuji Electric FA Components & Systems Co., Ltd. | Thermally operated overload relay |
| CN101958204A (en) * | 2009-07-15 | 2011-01-26 | 大陆株式会社 | Thermal overload relay |
| CN102054629A (en) * | 2009-11-10 | 2011-05-11 | 郭永明 | Digital thermorelay |
| CN202487509U (en) * | 2011-12-29 | 2012-10-10 | 上海良信电器股份有限公司 | Actuation mechanism of thermal overload relay |
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| Publication number | Publication date |
|---|---|
| CN103187213A (en) | 2013-07-03 |
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