CN100470698C - Control panel assembly for home appliances and method for manufacturing the same - Google Patents
Control panel assembly for home appliances and method for manufacturing the same Download PDFInfo
- Publication number
- CN100470698C CN100470698C CNB028025539A CN02802553A CN100470698C CN 100470698 C CN100470698 C CN 100470698C CN B028025539 A CNB028025539 A CN B028025539A CN 02802553 A CN02802553 A CN 02802553A CN 100470698 C CN100470698 C CN 100470698C
- Authority
- CN
- China
- Prior art keywords
- stiffener
- contact
- circuit breaker
- flexible hinge
- movable contact
- 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.)
- Expired - Fee Related
Links
Images
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
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
-
- 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
- H01H2001/247—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting using an elastic hinge, the contact being composed of rigid parts connected by thinned flexible hinge parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/43—Electric condenser making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49128—Assembling formed circuit to base
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49165—Manufacturing circuit on or in base by forming conductive walled aperture in base
Landscapes
- Breakers (AREA)
- Control Of Eletrric Generators (AREA)
- Emergency Protection Circuit Devices (AREA)
- Electronic Switches (AREA)
Abstract
A circuit breaker for low-voltage currents, comprises an enclosure that contains moving contact means and fixed contact means, the moving contact means comprising at least one moving contact, the fixed contact means comprising at least one fixed contact, a kinematic chain that comprises a plurality of levers that move the moving contact between an open position, in which the contacts are separated, and a closed position, in which they are coupled, and a mechanism that ensures a substantially constant force between the contacts in the closed position, its particularity consisting of the fact that the mechanism comprises a single body that has a first rigid element, which is associated with at least one of the fixed and moving contacts, and a second rigid element, which is arranged adjacent to the first rigid element and is connected thereto by virtue of a flexible hinge constituted by a first elastic and resilient element.
Description
Technical field
The present invention relates to a kind of circuit breaker for low-voltage currents of improving characteristic that has, particularly, the present invention relates to a kind of automatic low-voltage circuit breaker, this circuit breaker is by simple on structure, on the function effectively solution make the movable contact and the remaining unchanged in the past of the contact force between the fixed contact of circuit breaker of the present invention along with the time.
Background technology
As everyone knows, circuit breaker is a protective device, and when in the circuit that circuit breaker inserts electric fault taking place, this circuit breaker trip also cuts off electric current; For this purpose, they have the electrical contact that the metal part by two conductions is grouped into, one be fix be called as fixed contact or fixed contact, another is the movable movable contact that is called as.Movable contact passive movement chain orders about with corresponding fixed contact coupling or separates, so closure or open circuit.
An important parameter of circuit breaker true(-)running is made up of contact force, the power when just occurring in contact and being coupled mutually between the contact.This must guarantee to have between the coupling unit value of the power of enough pressure under closed situation, be inversely proportional to contact resistance on the one hand, just with between the current-carrying part contact the resistance that produces by physics and be inversely proportional to, be directly proportional opening time with contact on the other hand, just contact zero hour of separating is to contact institute's elapsed time fully separately.Since a basic demand of circuit breaker is that contact separates speed, this speed is high more good more, and for above-mentioned reasons, it is essential having low contact force; In order to obtain this little value, just need high contact resistance.
Therefore clearly, in the circuit breaker design process, be essential with enough attention to value that determines this contact force and the requirement of considering shortening opening time and reduction contact resistance.
In existing circuit breaker, contact force obtains by the action of kinematic chain, and each assembly of this kinematic chain will design especially guaranteeing that it has a predetermined value, and, in order to keep the operation of circuit breaker, described power must remain unchanged in the whole valid expiration date of circuit breaker and equal predetermined value.
Unfortunately, in the cycle of operation of routine, each assembly of circuit breaker is easy to change with respect to initial design conditions, and particularly, mainly due to the electric arc that produces in disconnection and closed procedure, electrical contact is easy to by serious wearing and tearing and corrosion.This influence extremely important so that in the valid expiration date of circuit breaker contact shape change and electric coupling deficiency between the each several part of contact.
In order to eliminate this defective to small part and to guarantee enough electric coupling, even under the situation that has the wearing and tearing contact to occur, kinematic chain must be able to compensate the variation of generation.This compensation is usually by using one or more springs to finish.Therefore, even have enough contacts between the electricity part, but contact force can not remain unchanged in the whole valid expiration date of circuit breaker, will directly influence opening time and contact resistance like this, finally causes the electric property of circuit breaker to reduce.
Normally act on the structure of kinematic chain at a solution of the problems referred to above, still, even now can bring the improvement of part, but often causes circuit breaker more complicated, and the result has increased production and assembly cost.
Summary of the invention
The purpose of this invention is to provide a kind of low pressure automatic circuit breaker, the contact force between this circuit breaker movable contact and the fixed contact roughly remained unchanged in the whole valid expiration date of circuit breaker.
In the scope of this purpose, a target of the present invention provides a kind of circuit breaker for low-voltage currents, and this circuit breaker contact opening time and contact resistance in the valid expiration date of circuit breaker do not change.
Another target of the present invention provides a kind of circuit breaker for low-voltage currents, and this circuit breaker has roughly constant performance in the valid expiration date of circuit breaker.
Another target of the present invention provides a kind of circuit breaker for low-voltage currents, the negative effect that this circuit breaker had constant contact force and can not bring the kinematic chain complexity in the valid expiration date of circuit breaker.
Another target of the present invention provides a kind of circuit breaker for low-voltage currents, and this circuit breaker has high reliability, makes simple relatively and has competitive cost.
This circuit breaker for low-voltage currents of Miao Shuing will make realization this purpose subsequently, it is obvious that these targets become, this circuit breaker comprises a shell that holds movable contact device and fixed contact device, the movable contact device comprises a movable contact at least, the fixed contact device comprises a fixed contact at least, kinematic chain comprises a plurality of levers that movable contact is moved between the make position of open position that contact separates and contact coupling, and mechanism that guarantees to have in make position between the contact roughly constant power, it is characterized in that, described mechanism comprises an independent main body that has first stiffener and second stiffener, this first stiffener at least with described fixed and movable contact in one be associated, this second stiffener is adjacent with described first stiffener, and be connected on first stiffener by a flexible hinge, this flexible hinge is made up of first elasticity and element with resilience.
Description of drawings
Further feature and advantage of the present invention will from according to the preferred of automatic low-voltage circuit breaker of the present invention but and become the description of not exclusive embodiment obviously, non-limiting example in conjunction with the drawings illustrates,
Wherein:
Fig. 1 is a part schematic diagram according to the automatic low-voltage circuit breaker of known configurations, illustrates activity and fixed contact especially;
Fig. 2 is the schematic diagram of first embodiment that is used for the fixed and movable contact of circuit-breaker according to the present invention;
Fig. 3 is the schematic diagram of second embodiment that is used for the fixed and movable contact of circuit-breaker according to the present invention;
Fig. 4 is the schematic diagram of the 3rd embodiment that is used for the fixed and movable contact of circuit-breaker according to the present invention.
Embodiment
Fig. 1 partly shows a known low-tension current automatic circuit breaker, and this circuit-breaker comprises a shell 9 that holds movable contact device and fixed contact device.In an illustrated embodiment, the fixed contact device comprises a fixed contact 1 that has conductive bodies 1a at least, and a contact plate 1b is installed on this conductive bodies 1a; Accordingly, the movable contact device comprises a movable contact 2 that has the conductive bodies 2a that conforms to profile, and a contact plate 2b who is suitable for corresponding contact plate 1b electric coupling is installed on this conductive bodies 2a.Movable contact 2 is driven by a suitable kinematic chain, kinematic chain is indicated by Reference numeral 15 in Fig. 1, according to well-known in this area therefore not have the embodiment that describes in detail, this kinematic chain comprises that a plurality of movable contacts 2 that make are at open position that contact separates and contact coupling and plate 1b and plate 2b mobile lever between the make position of physics contact each other.
And this circuit-breaker provides a suitable constant force mechanism, and just one is suitable for producing a roughly mechanism of constant force in response to straight line and/or the pressure that rotatablely moves.
Usually, these mechanisms are by being provided by the interconnected stiffener of suitable hinge, hinge links to each other with spring, and this spring is twist mode normally.For example, traditional constant force mechanism is made up of two rigidity connecting rods that connect by a rotary gemel, one end of first connecting rod props up on the standing part by an additional rotary gemel pivot, and an end of second connecting rod links to each other with a slide block by another rotary gemel.A torsionspring acts on the rotary gemel that second connecting rod is connected in slide block.In this structure, because the cause of slide block movement for example, makes that slide block tends to move to the connecting rod that is connected on the retaining element, this mechanism works by producing a roughly constant power.
In the circuit-breaker of using now, this mechanism is suitable for guaranteeing to have roughly constant power between the make position contact, and this function relies on the element of kinematic chain to finish usually.
Advantageously, in the embodiment of circuit breaker in a circuit according to the invention, the described mechanism that is suitable for producing roughly constant power comprises an independent main body that has first stiffener and second stiffener, this first stiffener links to each other with one of 2 with fixed or movable contact 1 at least, this second stiffener is adjacent with first stiffener, and is connected on first stiffener by a flexible hinge of being made up of elasticity and resilient element.
Preferably, described independent main body is made of an electrical conductor material, and flexible hinge is made of the thickness of the part by reducing described main body with respect to the adjacent part of forming stiffener.
In this mode, the mechanism that is suitable between contact producing constant power provides by an independent main body, and in main body separately, flexible hinge utilizes resilience and resiliency characteristics to replace rotary gemel and corresponding torsionspring fully on function; In fact, the suitable selection of elasticity and resilient element thickness has been equivalent to select a torsionspring with predetermined elasticity constant.
And, as mentioned above, separately main body can link to each other with fixed contact or movable contact, and owing to simplifying kinematic chain 15 or under any circumstance, in the valid expiration date of circuit-breaker, needn't act on kinematic chain, thereby bring very big advantage in order to obtain constant power; And main body by elasticity and the rebound characteristics that utilizes it, can compensate any variation with respect to original design, as contact wear separately.
Fig. 2 shows the preferred embodiment of a constant force mechanism, and wherein main body links to each other with the movable contact 2 of circuit-breaker separately.Particularly, in illustrated embodiment, described independent main body, by Reference numeral 20 expressions, zone at its fixed contact 1 that is used to be coupled structurally constitutes an integral body with the main body 2a that conforms to profile of movable contact 2, and this independent main body comprises first stiffener 3 and second stiffener 5 that is connected by first flexible hinge 6.First stiffener 3 links to each other with the remainder of main body 2a by one second flexible hinge 4, accordingly, second stiffener 5 is connected on the additional conductor element 7 by one the 3rd flexible hinge 8, and this additional conductor element 7 is suitable for and fixed contact 1 particularly plate 1b electric coupling.When circuit breaker closing, the end abutment of described element 7 and fixed contact 1, so that under the effect of main body 20, produce constant contact force between coupling unit, wherein element 7 can itself be constituted or under any circumstance replaced plate 2b on function by plate 2b.
As an alternative plan, structurally, the main body 2a that main body 20 can conform to profile constitutes an integral body in distance plate 2b a distance, perhaps can structurally separate simultaneously with movable contact as one and go up the continuous element of main body that conforms to profile by a suitable running that is connected.
Fig. 3 shows one second embodiment, and the main body 20 of wherein forming the mechanism that maintains contact force structurally links to each other with fixed contact 1.
In this structure, main body 20 also structurally constitutes one with the main body 1a of fixed contact 1, and comprise one first stiffener and one second stiffener 5, this first stiffener links to each other with the remainder of main body 1a by flexible hinge 4, and second stiffener links to each other with first element 3 by flexible hinge 6; Accordingly, second stiffener 5 links to each other with an additional conductor element 7 by one the 3rd flexible hinge 8.Identical with aforesaid embodiment, conductor element 7 and movable contact 2 electric coupling, wherein conductor element 7 can be made of described plate 1b, perhaps under any circumstance by forming as the element of the part of main body 20 and replace it on function.
In this case, as an alternative plan embodiment illustrated in fig. 3, structurally, the main body 1a that main body 20 can conform to profile constitutes an integral body in distance and movable contact 3 contacted regional a distance, perhaps can structurally separate simultaneously with fixed contact as one and go up the continuous element of main body that conforms to profile by a suitable running that is connected.
At last, Fig. 4 shows the 3rd embodiment who is suitable for guaranteeing the mechanism of a constant contact force between fixed contact 1 and movable contact 2.In this case, main body 20 is roughly Y-shaped, and is installed in the end in zone that is used to provide contact plate 1b of fixed contact 1.Particularly, main body 20 comprises one first stiffener 10 and one second stiffener, wherein first stiffener 10 is connected with the main body 1a of fixed contact 1 and places along reference axis 16, second stiffener comprises first rigid element 11 and second rigid element 12, first rigid element 11 is symmetrical arranged with respect to reference axis 16 with second rigid element 12 and is connected with stiffener 10 by a flexible hinge 13, under this special situation, hinge 13 roughly is fork-shaped; As shown in Figure 3, element 10 preferably is fixed on the main body of fixed contact 1 or by an additional flexible hinge and is connected with it.
In this structure, two rigid elements 11 replace plate 1b with 12 and are suitable for contacting with movable contact 2 on function, and this movable contact can have a hemisphere portion 14 at its contact area.In this manner, when rigid element 11 and 12 and movable contact 2 coupling, main body 20 is done as a wholely to guarantee to remain unchanged in the wide scope that axle moves along the power that symmetry axis 16 provides.
As a selectable scheme, seeing from view of function the on all four mode, main body 20 in the structure shown in Figure 4 can link to each other with movable contact 2, movable contact for fixed contact 1 particularly the plate 1b of fixed contact selectively adopt spherical structure, and the shape of forming the element of main body 20 can change, so long as with the corresponding to mode of the application in change.
Can find that in practice circuit-breaker of the present invention reaches fully wants the purpose and the target that obtain, provides a series of benefits with respect to prior art.By adopting main body 20, although each element changes in working order, the particularly wearing and tearing that inevitably are subjected to of contact, the contact force between fixed contact and the movable contact can roughly remain unchanged in the valid expiration date of circuit-breaker.With respect to known various circuit-breakers, this will be in operation and bring improvement, and the benefit of bringing simultaneously reduces the complexity of kinematic chain and expensive in addition.
Numerous modifications and variations of the circuit-breaker that can expect in permissible range all are comprised in the scope of the inventive concept; As with respect to as shown in the figure, contact shape can be changed into different ways.And other element that all parts all are equal to it on the available techniques substitutes.
In practice, as long as consistent with special purpose, the material of using, and size will be according to requirements of the prior art.
Claims (7)
1. circuit-breaker that is used for low-tension current, comprise a shell that contains movable contact device and fixed contact device, the movable contact device comprises a movable contact at least, the fixed contact device comprises a fixed contact at least, kinematic chain comprises a plurality of levers that movable contact is moved between the make position of open position that contact separates and contact coupling, and mechanism that guarantees to have in make position between the contact constant power
It is characterized in that, described mechanism comprises an independent main body that has first stiffener and second stiffener, this first stiffener at least with described fixed and movable contact in one be associated, this second stiffener is adjacent with described first stiffener, and be connected on first stiffener by one first flexible hinge, this flexible hinge is made up of elasticity and element with resilience.
2. circuit breaker as claimed in claim 1 is characterized in that, described independent main body is made of electrical conductor material, and described first flexible hinge has the thickness that reduces with respect to described first and second stiffeners.
3. circuit breaker as claimed in claim 1 or 2 is characterized in that, described independent main body structurally constitutes one with movable contact.
4. circuit breaker as claimed in claim 3, it is characterized in that, first stiffener and second stiffener interconnect by described first flexible hinge, described first stiffener is connected in the part of movable contact by one second flexible hinge, and described second stiffener is connected in an extra conductor element that is suitable for described fixed contact electric coupling by one the 3rd flexible hinge.
5. circuit breaker as claimed in claim 1 or 2 is characterized in that, described independent main body structurally constitutes one with fixed contact.
6. circuit breaker as claimed in claim 5, it is characterized in that, first stiffener and second stiffener interconnect by described first flexible hinge, described first stiffener is connected in the part of fixed contact by one second flexible hinge, and described second stiffener is connected in an extra conductor element that is suitable for described movable contact electric coupling by one the 3rd flexible hinge.
7. circuit breaker as claimed in claim 1 or 2, it is characterized in that, this first stiffener is connected with described fixed contact or described movable contact, second stiffener has first rigid element and second rigid element that is mutually symmetrical and is provided with respect to reference axis, and described first stiffener is connected with described first and second rigid elements along described reference axis setting and by described first flexible hinge.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2001MI001573A ITMI20011573A1 (en) | 2001-07-23 | 2001-07-23 | LOW VOLTAGE CURRENT SWITCH WITH PERFECT CHARACTERISTICS |
| ITMI01A001573 | 2001-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1465080A CN1465080A (en) | 2003-12-31 |
| CN100470698C true CN100470698C (en) | 2009-03-18 |
Family
ID=11448120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028025539A Expired - Fee Related CN100470698C (en) | 2001-07-23 | 2002-07-23 | Control panel assembly for home appliances and method for manufacturing the same |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1412956B1 (en) |
| CN (1) | CN100470698C (en) |
| AT (1) | ATE373867T1 (en) |
| DE (1) | DE60222560T2 (en) |
| IT (1) | ITMI20011573A1 (en) |
| WO (1) | WO2003017302A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557692A (en) * | 2016-10-22 | 2018-06-27 | Eaton Ind Austria Gmbh | Circuit breaker with reduced number of components |
| GB2569669B (en) * | 2017-12-22 | 2022-02-09 | Eaton Ind Austria Gmbh | Self-compensating mechanism for circuit breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3015876A (en) * | 1957-06-18 | 1962-01-09 | Gen Electric | Method of making resilient switch contacts |
| NL297517A (en) * | 1963-09-01 | |||
| US3866007A (en) * | 1973-10-09 | 1975-02-11 | Shlesinger Jr Bernard E | Contact reed with foil-thin intermediate section |
| US4238656A (en) * | 1979-03-01 | 1980-12-09 | Heyrana Pablo M | Waterproof multiple electrical switch assembly |
-
2001
- 2001-07-23 IT IT2001MI001573A patent/ITMI20011573A1/en unknown
-
2002
- 2002-07-23 DE DE60222560T patent/DE60222560T2/en not_active Expired - Lifetime
- 2002-07-23 WO PCT/EP2002/008214 patent/WO2003017302A1/en active IP Right Grant
- 2002-07-23 EP EP02794733A patent/EP1412956B1/en not_active Expired - Lifetime
- 2002-07-23 CN CNB028025539A patent/CN100470698C/en not_active Expired - Fee Related
- 2002-07-23 AT AT02794733T patent/ATE373867T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1465080A (en) | 2003-12-31 |
| ATE373867T1 (en) | 2007-10-15 |
| DE60222560T2 (en) | 2008-06-19 |
| ITMI20011573A0 (en) | 2001-07-23 |
| EP1412956B1 (en) | 2007-09-19 |
| ITMI20011573A1 (en) | 2003-01-23 |
| DE60222560D1 (en) | 2007-10-31 |
| WO2003017302A1 (en) | 2003-02-27 |
| EP1412956A1 (en) | 2004-04-28 |
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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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20110723 |