CN1992123A - Locking mechanism for electric appliance - Google Patents
Locking mechanism for electric appliance Download PDFInfo
- Publication number
- CN1992123A CN1992123A CNA2006100641491A CN200610064149A CN1992123A CN 1992123 A CN1992123 A CN 1992123A CN A2006100641491 A CNA2006100641491 A CN A2006100641491A CN 200610064149 A CN200610064149 A CN 200610064149A CN 1992123 A CN1992123 A CN 1992123A
- Authority
- CN
- China
- Prior art keywords
- contact
- fixed
- latching device
- moving contact
- moving
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/502—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position the action of the contact pressure spring becoming active only after engagement of the contacts
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- 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
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
Landscapes
- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Contacts (AREA)
Abstract
The present invention relates to a latching device, connecting to at least a pair of fixed contacts and traveling contacts, used in the differential breaker of protective circuit or differential switch electric appliance, transfers the motion of a control mechanism to each traveling contact, which is moved, supported on a pair of fixed contacts with a distance from the fixed contacts, and then obtaining the two stable states turn on/off by pressure contact. Therefor, the latching device is provided with a contact holder free rotating relative to the terminal box of electric apparatus and a tripping device for driving the contact holder which is in the off position of contact point. Each travelling contact is fixed in the contact holder rigidly, and each fixed contact is provided with a flexible assembly changing the contact force.
Description
Technical field
The present invention relates to a kind of latching device; it is connected at least one pair of fixed contact and moving contact; be used for protection circuit and personnel's the differential circuit breaker or the electrical equipment of differential switch type, perhaps in general, be used to be suitable for switch on and off the electrical equipment of any kind of a circuit.
Background technology
In the electrical equipment of the type, latching device is particularly useful for the Motion Transmission of the controlling organization of joystick-type is arrived each moving contact, make it mobile, be bearing in respectively on the corresponding fixed contact and with described fixed contact at a distance of certain distance, the pressure contact is connected and two stable status of circuit disconnection to obtain.Traditionally, this mechanism has a contact base and a tripping mechanism, described contact base freely rotates with respect to the terminal box of electrical equipment, the effect of described tripping mechanism is to drive the open position that contact base enters the contact, in the major function of snap close, be the energy of measurement by magnification system (bimetallic element, coil), so as under the situation that circuit goes wrong separated contacts.
In generally well-known configuration, moving contact is connected with contact base pivotally, and a return spring is arranged between these two parts.This spring is mainly used in and makes each moving contact and fixed contact carry out pressure to contact, thus with guarantee pressure be enough to avoid making circuit breaker very dangerous reliably, damage fixed contact and moving contact gradually then and quicken the electrical problems that contact quality descends and any circuit in the cycle that the security reliability of electrical equipment descends is connected.
Secondly, the return spring that is arranged between each moving contact and the contact base also is used to guarantee wear process, is used to compensate that may wear and tear in the contact and the gap of causing, thereby helps avoid foregoing problems.
The known solution of spring is housed in the movable part of snap close, makes these systems more complicated, therefore, manufacturing and installation cost are higher.This especially will cause according to the setting of the quantity of the parts of moveable connection method assembling and spring, and described spring should fix the end, to guarantee its elastic return function.
In addition, according to the type (circuit breaker, differential switch etc.) and the installation dimension of electrical equipment, required contact force is inequality.Therefore, in the solution of the movable part mounting spring of snap close, must adjust described part (the especially selection of spring) according to the application of electrical equipment and/or consideration.This adjustment means will dispose a large amount of snap closes, to satisfy the needs of each dissimilar electrical equipment---even in same scope, so that be suitable for various application and diverse size.
From economic angle, on the industrial prospect as supermatic basis, this situation is a significant adverse.
Summary of the invention
For remedying these defectives, according to the present invention, be adapted to each moving contact and be fixed to rigidly on the contact base, each fixed contact itself is furnished with the elastomeric element that changes contact force.
In other words, according to the present invention, the control that contact pressure changes moves to a fixed component from the movable part of mechanism.This solution is innovated fully with respect to current known solution, aspect technical solution and the layout aspect of course of industrialization very big simplification is all arranged.Therefore, under the situation of the electrical equipment with a single moving contact, the movable part of snap close no longer comprises three parts, and wherein two fixed to one another.Therefore, the 3rd parts---tripping mechanism is arranged on the assembly that is made of other two parts freely to rotate fully.
Therefore, from independent and the prospect of making in batches, it is very favorable that the improvement that the present invention did can be considered economically.
Exactly, thereby each fixed contact can be made of a conductive spring leaf, described conductive spring leaf is made with a resilient flexibility material, its shape is specified to the elastic restoring force that effect produced that is applied by moving contact, applies on the direction of the power that moving contact applies and in contrast direction basically.
The significant improvement that solution of the present invention is brought is embodied in this feature once more, because fixed contact---in the configuration of prior art, make by a sheet metal, in fact stand simple alteration of form, make it to be easier to be released in the energy that utilizes when the pressure that causes contacts owing to connecting.
According to an additional possibility, the reset components different with each fixed contact also can be arranged to, when moving contact is driven when resting on the fixed contact, described reset components is applied, disengage the energy of storage according to active force, in described active force, be arranged essentially parallel to the contact force of moving contact and in contrast with joint efforts again.
When the desired contact force of electrical equipment is big,, especially can utilize this possibility for example for large-sized differential switch.In general, must be pointed out that according to ratio that can variation from unidirectional to two-way, required contact pressure is significantly less than the contact pressure that needs in the differential switch in the circuit breaker frame.This especially the function difference of these electrical equipment cause, therefore, for circuit breaker, the contact disconnects when short circuit, and under similar circumstances, keeps connecting in differential switch.
For making the fixed contact deformability, guaranteeing wear process and contact pressure, and, when can being disconnected in the contact, it recovers its original position, and integral body has suitable persistence, preferably makes it to have special shape.
Like this, according to a possible structure, this fixed contact is a shape of spring plate, have the straight two parts of the profile vertical with contact force, one of these parts are used to make described spring leaf to fix with respect to terminal box, and another part is used to admit contact area, and these two parts by a mid portion that tilts separately, described mid portion moves contact portion along the direction of each moving contact on the one hand, moves axially between these parts on the other hand.
Along the same moved further of both direction, realize that with configuration this two-way mobile mid portion combines, be convenient to strain.In addition, the rigidity of spring leaf is easy to change, as long as change the thickness of described spring leaf.
According to a possibility, the end of contact portion comprises the contact area relative with the contact area that is connected in mid portion, be fixed in a fixed part by an annular section, described fixed part is fixed with respect to the terminal box of electrical equipment, and the first of spring leaf is also fixed thereon.
Preferably, aforementioned reset components is made of a compression spring, and it is positioned at the contact site office, and with respect to each moving contact, by the center of contact area, the direction of its profile is perpendicular to contact-making surface basically for its compression axis.
This spring is easy to install, and on the size compatible with system a range in stiffness is arranged, and can carry out trickle adjustment according to the electrical equipment and the applicable cases that adopt this solution.In addition, adopt a spring, only when the big rigidity of needs, adjust.
In addition, the new formation of the movable part of snap close provides additional superiority, for example, can simplify other function of electrical equipment.Like this, can adopt a solution, wherein, parts particularly tripping mechanism are designed to be fixed to one of moving contact on the contact base and are rigidly connected to one of end of a bimetallic element.This solution is highly beneficial, because it greatly reduces the complexity of temperature-sensitive separation assembly (remove flexible cord and connect, do not dispose regulating system, thereby reduce complexity, reduce cost).
Preferably, moving contact and bimetallic element thereby can be fixed to one another at the place, end relative of moving contact with being used to connect the end that contacts.
In view of guaranteeing that the pressure that moving contact rests on the fixed contact moves towards a standing part of electrical equipment now, three parts that form movable part also can greatly be simplified.Owing to only carry out and can be dynamically connected, tripping mechanism can be installed on the assembly that is formed by contact base and at least one moving contact, by the simple cooperation of a hole and a cylindrical contact chip, and the connection that pivots, the axis of pivot is identical with described moving contact.
In addition, the work of latching device keeps traditional approach, and promptly the control crank of joystick-type drives a connecting rod, described connecting rod trends towards the contact base that promotes to pivot, so that moving contact carries out the pressure contact on fixed contact to be connected, and makes moving contact break away from fixed contact, make it to disconnect.
A lock pin that exceeds the tripping mechanism main body can cooperate with an inclined-plane of a side of contact base and with the connecting rod that is connected in controlling organization, implement a separable toggle, one of end by connecting rod is locked between described lock pin and the described inclined-plane respectively, and by described tripping mechanism a temperature-sensitive or Magnetic Isolation assembly respectively since when pivoting with respect to contact base under the effect that circuit overload or short circuit produce described end make controlling organization mobile between the settling position of contacting and disconnection because moving of described lock pin discharges.Therefore, reset components moves contact base, so that moving contact separates with fixed contact.
The simplification of snap close of the present invention can make same snap close be used for quite large-scale product and be used for diverse contact force.In addition, this solution can be used for part of standardsization (modulairesdemi-module) electrical appliance junction box fully, or in a single standardization (unimodulaire) terminal box, have in the electrical appliance junction box of two snap closes.
Description of drawings
Now, with reference to accompanying drawing in detail the present invention is described in detail, accompanying drawing is as follows:
Fig. 1 is the stereogram with mechanism of a joystick of the present invention;
Fig. 2 is an end view; And
Fig. 3 illustrates the opposite side of mechanism of the present invention.
Embodiment
As shown in the figure, the controlling organization of an electrical equipment for example differential circuit breaker or a differential switch is made of a joystick 1 that freely rotates with respect to the terminal box of described electrical equipment, and it rotatablely moves and is delivered to a mobile component based on a contact base 2 by a connecting rod 3.
One moving contact 5 is fixed in contact base 2 rigidly.According to a possibility, a bimetallic element 6 equally also is fixed in described moving contact 5 rigidly.
Usually, be well known that, described assembly is in the following manner as a toggle job: when controlling organization 1 pivots in the contacting position, tripping mechanism 4 is located with respect to contact base 2 in mode shown in the drawings, joystick 1 promotes described contact base 2 by connecting rod 3, make it to pivot, and moving contact 5 is rested on the fixed contact 11.
Mechanism is undertaken by the end of connecting rod 3, described connecting rod 3 is by matching with described contact base 2 on the inclined-plane 7 that is bearing in contact base 2, described supporting can by with tripping mechanism 4 be that a lock pin 8 of one whole carries out (see figure 2), described tripping mechanism 4 is located by described end Face to face and locking is bearing on the described inclined-plane 7.
There is not the function problem in the relative positioning on the inclined-plane 7 of the end of lock pin 8, connecting rod 3 and contact base 2 as illustrated in fig. 1 and 2 on the circuit.
When unexpected generation is transshipped, bimetallic element 6 distortion, and act on the end 10 of a pawl 9 that is connected with tripping mechanism 4, described pawl 9 is rotated around a contact chip that is received in the terminal box in the hole 20 with respect to contact base 2, mobile lock pin 8, unclamp connecting rod 3, and cause that contact 5,11 disconnects, this is owing to dispose the cause of reset components (not shown), described reset components is connected in the terminal box and the contact base 2 of electrical equipment, and makes moving component be in the position that moving contact for example 5 and fixed contact 11 keep certain distances.
Situation is identical during short circuit, and therefore, opening circuit is caused by a magnetic element M, and its striker moves tripping mechanism 4.
Cooperation between this function and each the different parts is known, therefore, is no longer described in detail in this specification.
In fact, core of the present invention is that opposite with configuration of the prior art, moving contact 5 is not installed pivotally with respect to contact base 2.On the contrary, it is fixing rigidly.
Therefore, on the one hand, moving contact 5 is bearing in the control of the pressure on the fixed contact 11, and on the other hand, the control of wear process is preferably undertaken by fixed contact 11.It is made of a flexible spring sheet, and its shape is specified to and can guarantees contact pressure repeatedly, in case of necessity, can guarantee wear process repeatedly.
Fixed contact 11 is the flat spring leaf parts of a profile in the face of the end of moving contact 5, when the end that is oriented in moving contact 5 on its surface arrives its bearing position, is substantially perpendicular to the mobile tangent line of the end of described moving contact 5.For making fixed contact 11 can fulfil aforementioned functional, according to the present invention, the configuration with flexible spring sheet is as follows: a first 12 can make described spring leaf be fixed in a flange 13 of the end of magnetic element M.This part 12 is connected in the part 11 that forms fixed contact by a mid portion 14 that tilts, so that produce two-way moving, promptly move axially and along moving perpendicular to the direction of spring leaf axis, help making fixed contact 11 to move along required direction, because the character of selected materials is carried out resilient movement.
Shown in configuration in, spring leaf is connected in flange 13 by an annular section 15 in addition, described annular section 15 improves the stability of spring leaf for a long time.Alternatively, a compression spring 16 is arranged in flange 13 and forms between the part 11 of fixed contact.
Like this, guarantee the required and elastic performance may command wear process of pressure contact good between fixed contact 11 and the moving contact 5, not only by be fixed in magnetic element M, have a flexible spring sheet that forms the part 11 of fixed contact and guarantee, and by the configuration spring 16 guaranteed, improve in case of necessity.
Obviously, the present invention is not limited to this configuration, and the flexible spring sheet even the reset components of other shape can be used for implementing identical functions.
Claims (10)
1. latching device; it is connected at least one pair of fixed contact (11) and moving contact (5); be used for the differential circuit breaker of protection circuit or the electrical equipment of differential switch type; described latching device arrives each moving contact (5) with the Motion Transmission of a controlling organization (1); make it mobile; be bearing in respectively that a corresponding fixed contact (11) goes up and with described fixed contact (11) at a distance of certain distance; with two stable status that obtain to switch on and off by pressure; for this reason; described latching device has a contact base (2) and a tripping mechanism (4); described contact base (2) freely rotates with respect to the terminal box of electrical equipment; the effect of described tripping mechanism (4) is to drive described contact base (2); make it to be in the open position of contact (5,11)
It is characterized in that each moving contact (5) is fixed in contact base (2) rigidly, each fixed contact (11) is furnished with the elastomeric element that the contact force of making changes.
2. according to last the described latching device of claim, it is characterized in that, each fixed contact (11) is made of a conductive spring leaf, described spring leaf is made with a flexible elastomeric material, its shape is specified to, the elastic restoring force that the effect that is applied by moving contact (5) produces applies on the direction of the effect that described moving contact (5) applies and in contrast direction basically.
3. according to last the described latching device of claim, it is characterized in that, the reset components (16) different with each fixed contact (11) are arranged to, when moving contact (5) is driven when resting on fixed contact (11) and going up, described reset components is applied, disengage the energy of storage according to active force, in described active force, make a concerted effort to be arranged essentially parallel to the contact force of described moving contact (5) and in contrast.
4. according to last the described latching device of claim, it is characterized in that, each fixed contact (11) is a shape of spring plate, it has straight two parts of the profile vertical with contact force (12,11), one of these parts (12) are used for fixing described spring leaf, another part (11) is used to admit contact area, these two parts (11,12) by a mid portion (14) that tilts separately, described mid portion (14) moves described contact portion (11) along the direction of each moving contact (5) on the one hand, moves axially between these parts (11,12) on the other hand.
5. according to last the described latching device of claim, it is characterized in that, the end of contact portion (11) comprises and the relative contact area of contact area that is connected in mid portion (14), be fixed in a fixed part (13) by an annular section (15), described fixed part (13) is with respect to the terminal box of electrical equipment and be fixed, and the first of spring leaf (12) also is fixed on the described fixed part (13).
6. according to last the described latching device of claim, it is characterized in that, reset components is made of a compression spring (16), it is positioned at contact portion (11) and locates, with respect to each moving contact (5), by the center of contact area, the direction of its profile is perpendicular to contact-making surface basically for its compression axis.
7. according to each described latching device in the aforementioned claim, it is characterized in that, be fixed to one of moving contact (5) on the contact base (2) and be rigidly connected to one of end of a bimetallic element (6).
8. according to the described latching device of last claim, it is characterized in that moving contact (5) and bimetallic element (6) are located fixed to one another in the end relative with being used to connect the end that contacts of described moving contact (5).
9. according to each described latching device in the aforementioned claim, it is characterized in that, tripping mechanism (4) is installed on the contact base (2) according to the pivot connected mode by the cooperation of a hole (20) and a cylindrical contact chip, and its pivot axis is identical with the rotation of described contact base (2).
10. according to each described latching device in the aforementioned claim, it is characterized in that, a lock pin (8) that exceeds the main body of tripping mechanism (4) can cooperate with an inclined-plane (7) of a side of contact base (2) and with the connecting rod that is connected in controlling organization (1), implement a separable toggle, described controlling organization (1) is locked between described lock pin (8) and described inclined-plane (7) one of end by connecting rod (3) respectively, and by described tripping mechanism (4) a thermal trip assembly (6) or magnetic trip assembly (M) respectively since when pivoting with respect to contact base (2) under the effect that circuit overload or short circuit produce described end since the mobile of described lock pin (8) discharge, move between the settling position that switches on and off in contact (5,11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0511057A FR2892849B1 (en) | 2005-10-28 | 2005-10-28 | LOCK MECHANISM FOR ELECTRICAL APPARATUS |
| FR0511057 | 2005-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1992123A true CN1992123A (en) | 2007-07-04 |
| CN100565750C CN100565750C (en) | 2009-12-02 |
Family
ID=36663192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100641491A Expired - Fee Related CN100565750C (en) | 2005-10-28 | 2006-10-30 | The latching device that electrical equipment is used |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100565750C (en) |
| DE (1) | DE102006051424B4 (en) |
| FR (1) | FR2892849B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962646A (en) * | 2018-06-13 | 2018-12-07 | 上海电力学院 | The low overvoltage low-voltage circuit breaker of current-limiting type |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928774B1 (en) * | 2008-03-12 | 2013-12-27 | Hager Electro Sas | ELASTIC ROD LOCK MECHANISM. |
| FR3100921B1 (en) * | 2019-09-12 | 2021-09-24 | Schneider Electric Ind Sas | Electrical switching device with separable contacts |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE907669C (en) * | 1942-08-21 | 1954-03-29 | Voigt & Haeffner Ag | Contact arrangement for high voltage switch |
| US2783330A (en) * | 1955-01-31 | 1957-02-26 | Gen Electric | Automatic circuit breaker |
| DE1640431A1 (en) * | 1968-03-07 | 1970-07-16 | Hundt & Weber | Contact device for electrical switchgear |
| FR2573572B1 (en) * | 1984-11-16 | 1987-01-09 | Telemecanique Electrique | CIRCUIT BREAKER WITH REMOTE OPENING AND CLOSING OF ITS CIRCUITS |
| FR2598254A1 (en) * | 1986-05-05 | 1987-11-06 | Legrand Sa | Electrical contraption with floating mobile contact, in particular circuit breaker |
| DE4234065C1 (en) * | 1992-10-09 | 1993-12-02 | Eti Elektroelement Dd | Switchgear |
| DE10043464C1 (en) * | 2000-09-04 | 2002-02-07 | Klaus Bruchmann | Switch fuse unit has contact element contacting contact of fuse insert via movable conductive cover provided by pivoted switch wiper receiving fuse insert |
| AU2001295528A1 (en) * | 2000-09-04 | 2002-03-26 | Klaus Bruchmann | Disconnecting switch |
| US6710688B2 (en) * | 2001-04-30 | 2004-03-23 | Eaton Corporation | Circuit breaker |
-
2005
- 2005-10-28 FR FR0511057A patent/FR2892849B1/en not_active Expired - Fee Related
-
2006
- 2006-10-27 DE DE200610051424 patent/DE102006051424B4/en not_active Expired - Fee Related
- 2006-10-30 CN CNB2006100641491A patent/CN100565750C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962646A (en) * | 2018-06-13 | 2018-12-07 | 上海电力学院 | The low overvoltage low-voltage circuit breaker of current-limiting type |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006051424B4 (en) | 2010-08-12 |
| FR2892849A1 (en) | 2007-05-04 |
| FR2892849B1 (en) | 2013-12-20 |
| DE102006051424A1 (en) | 2007-06-06 |
| CN100565750C (en) | 2009-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huzhou Hager Electric Ltd. Assignor: Hager Electro Contract record no.: 2011990001100 Denomination of invention: Locking mechanism for electric appliance Granted publication date: 20091202 License type: Exclusive License Open date: 20070704 Record date: 20111219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20171030 |