CN104241052A - Contact closing device for a switch - Google Patents
Contact closing device for a switch Download PDFInfo
- Publication number
- CN104241052A CN104241052A CN201410427609.7A CN201410427609A CN104241052A CN 104241052 A CN104241052 A CN 104241052A CN 201410427609 A CN201410427609 A CN 201410427609A CN 104241052 A CN104241052 A CN 104241052A
- Authority
- CN
- China
- Prior art keywords
- contact
- movable contact
- spring
- bar
- movable
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
- H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged
Landscapes
- Breakers (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Push-Button Switches (AREA)
- Keying Circuit Devices (AREA)
- Tumbler Switches (AREA)
Abstract
A contact closing device for a switch having at least one movable contact, at least one fixed contact, and a contact mechanism actuated by an operating handle; a contact holder lever supports one or more movable contacts; the contact holder lever has a rotational motion between an open contact position and a closed contact position; each movable contact has an oscillating motion within a respective seat formed in the contact holder lever; a tripping lever is associated with the contact holder lever and is adapted to actuate the oscillating motion of each movable contact; each movable contact is fitted in the respective seat together with a respective spring and a respective tripping blade; each tripping blade is engaged by the tripping lever during a portion of the rotational motion from the open contact position to the closed contact position; during this portion of rotational motion the tripping blade blocks at least partially the movement of the movable contact and the spring undergoes a compression; at the end of the portion of rotational motion the tripping blade disengages from the tripping lever, leaving the movable contact free to contact the fixed contact by virtue of the action of the spring. The trip blade is fitted inside the seat of the contact holder lever and is provided with an end adapted to be engaged by the trip lever fitted on said contact holder lever.
Description
Technical field
The present invention relates to a kind of contact closure equipment for switch
Background technology
As everyone knows, electric switch uses and allows by operation outer handle concurrently and synchronously disconnect and close the mechanism of multiple movable contact, and the automatic intervention of the proterctive equipment that this outer handle can be had by user and switch internal gets at.
Some switches have the equipment of the service speed allowing to make contact closure speed independent of handle.
In fact preferably, contact is instantaneous closed, is used for preventing dangerous result, such as the generation of electric arc between close contact.
FR-2717617 and EP2061060 discloses the electric switch having and guarantee quick contact closure system.
FR2686453 discloses a kind of differential switch with active trip, and this separating mechanism is positioned at case, between action bars and contact supporter.
In the middle of the design of these switches, two common problems are complexity and the size of this mechanism.
From structural point, in order to make product have economy, there is the demand continued simplifying this mechanism, and making assembling simplification and automation also be very important.
Another basic problem improves the performance of switch, maintains small size simultaneously and under any circumstance all meet standard.
Summary of the invention
Target of the present invention is to provide a kind of equipment for close switch contact, which ensure that the quick-make independent of action bars service speed, have simplification and can the economic structure manufactured.
Within the scope of this target, the object of this invention is to provide a kind of contact closure equipment, it can be used in safety switch, such as residual current circuit breaker and Thermomagetic circuit-breaker.
Another object of the present invention is to provide a kind of equipment, relies on its specific architectural feature, can provide maximum guarantee to the reliability in use and fail safe.
To this target more apparent be become and these and other objects are realized by a kind of contact closure equipment for switch below, this switch comprises at least one movable contact and at least one fixed contact, and described movable contact relies on the mechanism operation activated by action bars; Contact keeps bar to support one or more movable contact; Described contact keeps bar can rotate between breaking-off contact position and closed contact position; Each described movable contact keeps swinging in the corresponding seat in bar being formed at described contact; Release lever and described contact keep bar to be connected, and are applicable to the swing activating each movable contact; The feature of described closing apparatus is, each movable contact is arranged in corresponding seat with corresponding spring together with corresponding dropout blade-like part; At described release lever from described breaking-off contact position to during a part for the described rotation of described closed contact position, each dropout blade-like part engages with described release lever; During a described part for described rotation, described dropout blade-like part stops the activity of described movable contact at least in part, and described spring bears compression; At the end of a described part for described rotation, described dropout blade-like part departs from from described release lever, thus makes described movable contact freely contact described fixed contact by the effect of described spring; Described dropout blade-like part is arranged on described contact and keeps in the described seat of bar, and has the end be applicable to being arranged on described contact and keeping the described release lever on bar to engage.
Accompanying drawing explanation
From preferred but the description of the embodiments of the invention of nonexcludability, further characteristic and beneficial effect will become more apparent, and it is shown via example nonrestrictive in accompanying drawing, wherein:
Fig. 1 is the end view of residual current circuit breaker, illustrates with the state of breaking-off contact;
Fig. 2 is the view being similar to front figure, shows the circuit breaker being in contact closure step;
Fig. 3 is the view being similar to front figure, shows the circuit breaker being in closed contact state;
Fig. 4 is the decomposition diagram according to closing apparatus of the present invention;
Fig. 5 is the perspective view of the closing apparatus be under assembled state.
Embodiment
With reference to the accompanying drawing quoted, the entirety describing overall residual current circuit breaker inside of being specified by Reference numeral 100 herein by Reference numeral 1 specify according to contact closure equipment of the present invention, described residual current circuit breaker 100 comprises residual current circuit 101, is made up of relay and differential transformer.Residual current circuit 101 is applicable to rely on free tripping mechanism 104 to move to activate at least one movable contact 3 relative to fixed contact 103, with circuit that is closed or that disconnect between two input and output terminals 105.
Circuit breaker 100 has the actuation handle 106 for the manual activation of mechanism 104.
Mechanism 104 comprises closing apparatus 1, and it has at least one contact and keeps bar 2.Movable contact 3 is arranged on and keeps in bar 2, and contact pad 102 is arranged on movable contact 3.
Movable contact 3 synthesizes as a whole contact keeping arm 31 by dependence sweep 33 with support arm 32 and forms.
Support arm 32 has groove 34 and tab 35.
Movable contact 3 can swing against spring 5 being formed in the corresponding seat 21 in bar 2, and this spring 5 is between contact keeping arm 31 and spring support 6, and spring support is arranged in the seat 21 of bar 2.
Spring support 6 has the protuberance 61 of the end of combined spring 5.Spring support 6 also has recess 62, and described recess 62 has the internal tooth 63 of the groove 34 engaging movable contact 3.
The otch 64 being positioned at recess 62 place engages the tab 35 of movable contact 3.
Dropout blade-like part 7 is arranged in the seat 21 of bar 2, and has the end 71 that the release lever 8 that is suitable for and be arranged on bar 2 engages.
Release lever 8 has the protuberance 81 of corresponding each dropout blade-like part 7.
Release lever 8 also has the dropout tab 82 by cam 9 activity, and this cam 9 is arranged on contact and keeps on the rotating shaft of bar 2.
Contact keeps bar 2 can comprise one or more movable contact, such as, in the example illustrated, be two, or four or more.
Release lever 8 is single bars, and allows to lock movable contact provisionally and discharged in given moment.
Each movable contact all has dropout blade-like part 7, and it engages release lever 8 during closed procedure, stops the motion towards fixed contact 103 of corresponding movable contact 3, but is discharged by movable contact 3 in given moment.
In this step, the upper end of each dropout blade-like part 7 is all bonded in the corresponding protuberance 81 of release lever 8.
During closed procedure, while contact keeps bar 2 to rotate and the activity of movable contact 3 is prevented from, spring 5 is compressed.
Once thread off, that is, when dropout blade-like part 7 departs from release lever 8, spring stretches and produce the at once motion of movable contact 3 towards fixed contact 103, closed circuit between the terminal of mains side and the terminal of load-side.
Fig. 1-3 illustrates the operation because action bars 106 causes, sequence of motion when this equipment moves from breaking-off contact position to closed contact position.
In practice, have been found that the object and target that present invention achieves anticipation, provide a kind of equipment for close switch contact, which ensure that the contact closure of the service speed independent of switch knob.
Simple according to device structure of the present invention, and be easy to manufacture economically, ensure that high reliability and durability simultaneously.
The application advocates that Italian application number is MI2013A001034, and be filed in the priority of the application on June 21st, 2013, its theme is integrated with herein by way of reference.
Claims (6)
1. for a contact closure equipment for switch, this switch comprises: at least one movable contact and at least one fixed contact, and described movable contact relies on the mechanism activated by action bars to operate; Contact keeps bar, and it supports one or more movable contact; Described contact keeps bar can rotate between breaking-off contact position and closed contact position, and each described movable contact can keep swinging in the corresponding seat in bar being formed at described contact; Release lever, itself and described contact keep bar to be associated, and are applicable to the swing activating each movable contact; The feature of described closing apparatus is, each movable contact is arranged in corresponding seat with corresponding spring together with corresponding dropout blade-like part; At described release lever from described breaking-off contact position to during a part for the described rotation of described closed contact position, each dropout blade-like part engages with described release lever; During a part for described rotation, described dropout blade-like part stops the activity of described movable contact at least in part, and described spring bears compression; At the end of a part for described rotation, described dropout blade-like part is disengaged with described release lever, thus makes described movable contact freely can contact described fixed contact by the effect of described spring; Described dropout blade-like part is arranged on described contact and keeps in the described seat of bar, and has the end be applicable to being arranged on described contact and keeping the described release lever on bar to engage.
2. equipment according to claim 1, is characterized in that, described movable contact is made up of contact keeping arm, and this contact keeping arm is integrated with support arm by bending part; Described support arm comprises groove and tab.
3. equipment according to claim 2, is characterized in that, described movable contact keeps swinging against described spring in the described seat in bar being formed at described contact; Described spring is between described contact keeping arm and the spring support being arranged in described seat.
4. equipment according to claim 3, is characterized in that, described spring support has the protuberance engaging described spring end and the recess with internal tooth; The described groove of movable contact described in described interior indented joint; Otch is provided with at described recess place; Described otch engages the described tab of described movable contact.
5. equipment according to claim 4, is characterized in that, described release lever comprises the one or more protuberances for each described dropout blade-like part.
6. equipment according to claim 5, is characterized in that, described release lever comprises dropout tab, this dropout tab can by be arranged on described contact keep bar rotating shaft on cam and movable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT001034A ITMI20131034A1 (en) | 2013-06-21 | 2013-06-21 | DEVICE FOR CLOSING CONTACTS OF A SWITCH |
| ITMI2013A001034 | 2013-06-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104241052A true CN104241052A (en) | 2014-12-24 |
| CN104241052B CN104241052B (en) | 2017-11-28 |
Family
ID=48877389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410427609.7A Active CN104241052B (en) | 2013-06-21 | 2014-06-23 | Contact closure equipment for switch |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2816577B1 (en) |
| CN (1) | CN104241052B (en) |
| ES (1) | ES2569948T3 (en) |
| IT (1) | ITMI20131034A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000272A1 (en) * | 2020-06-30 | 2022-01-06 | 浙江沃斯托电气有限公司 | Circuit breaker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599913B (en) * | 2015-01-21 | 2016-08-24 | 温州高能电气有限公司 | A kind of RCCB |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686453A1 (en) * | 1992-01-17 | 1993-07-23 | Legrand Sa | Differential switch |
| US5539167A (en) * | 1994-02-14 | 1996-07-23 | Square D. Company | Blade suspension assemlby for a circuit breaker |
| EP0773572A1 (en) * | 1995-11-08 | 1997-05-14 | Legrand | Electric apparatus with snap closing |
| US5931289A (en) * | 1998-03-10 | 1999-08-03 | Eaton Corporation | Circuit breaker with quick closing mechanism |
| US20030038695A1 (en) * | 2001-08-21 | 2003-02-27 | Siemens Energy And Automation, Inc | Pivot joint for a movable contact arm in a molded case circuit breaker |
| CN1501418A (en) * | 2002-10-28 | 2004-06-02 | 富士电机机器制御株式会社 | Breaker |
| CN1901125A (en) * | 2006-07-20 | 2007-01-24 | 常熟开关制造有限公司(原常熟开关厂） | Tripping device for breaker operation mechanism |
| CN101162667A (en) * | 2006-10-13 | 2008-04-16 | Abb服务有限公司 | Low-voltage device with reinforced rotating element |
| CN102047371A (en) * | 2008-08-06 | 2011-05-04 | 三菱电机株式会社 | Movable contactor device of circuit breaker |
| CN102110553A (en) * | 2011-03-07 | 2011-06-29 | 法泰电器（江苏）股份有限公司 | Operating mechanism of selective protection switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2717617B1 (en) | 1994-03-15 | 1996-05-31 | Hager Electro | Improvement to differential switches. |
| FR2923941B1 (en) | 2007-11-16 | 2014-09-05 | Schneider Electric Ind Sas | ELECTRICAL CUTTING DEVICE SUCH AS A CIRCUIT BREAKER OR SWITCH |
-
2013
- 2013-06-21 IT IT001034A patent/ITMI20131034A1/en unknown
-
2014
- 2014-06-19 ES ES14002118.9T patent/ES2569948T3/en active Active
- 2014-06-19 EP EP14002118.9A patent/EP2816577B1/en active Active
- 2014-06-23 CN CN201410427609.7A patent/CN104241052B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686453A1 (en) * | 1992-01-17 | 1993-07-23 | Legrand Sa | Differential switch |
| US5539167A (en) * | 1994-02-14 | 1996-07-23 | Square D. Company | Blade suspension assemlby for a circuit breaker |
| EP0773572A1 (en) * | 1995-11-08 | 1997-05-14 | Legrand | Electric apparatus with snap closing |
| US5931289A (en) * | 1998-03-10 | 1999-08-03 | Eaton Corporation | Circuit breaker with quick closing mechanism |
| US20030038695A1 (en) * | 2001-08-21 | 2003-02-27 | Siemens Energy And Automation, Inc | Pivot joint for a movable contact arm in a molded case circuit breaker |
| CN1501418A (en) * | 2002-10-28 | 2004-06-02 | 富士电机机器制御株式会社 | Breaker |
| CN1901125A (en) * | 2006-07-20 | 2007-01-24 | 常熟开关制造有限公司(原常熟开关厂） | Tripping device for breaker operation mechanism |
| CN101162667A (en) * | 2006-10-13 | 2008-04-16 | Abb服务有限公司 | Low-voltage device with reinforced rotating element |
| CN102047371A (en) * | 2008-08-06 | 2011-05-04 | 三菱电机株式会社 | Movable contactor device of circuit breaker |
| CN102110553A (en) * | 2011-03-07 | 2011-06-29 | 法泰电器（江苏）股份有限公司 | Operating mechanism of selective protection switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000272A1 (en) * | 2020-06-30 | 2022-01-06 | 浙江沃斯托电气有限公司 | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2816577B1 (en) | 2016-03-30 |
| CN104241052B (en) | 2017-11-28 |
| ITMI20131034A1 (en) | 2014-12-22 |
| ES2569948T3 (en) | 2016-05-13 |
| EP2816577A1 (en) | 2014-12-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |