EP0218497B1 - Schutzschalter mit federnder Lasche - Google Patents
Schutzschalter mit federnder Lasche Download PDFInfo
- Publication number
- EP0218497B1 EP0218497B1 EP86401923A EP86401923A EP0218497B1 EP 0218497 B1 EP0218497 B1 EP 0218497B1 EP 86401923 A EP86401923 A EP 86401923A EP 86401923 A EP86401923 A EP 86401923A EP 0218497 B1 EP0218497 B1 EP 0218497B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hook
- contact
- lever
- tripping
- spring
- 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 - Lifetime
Links
- 230000001681 protective effect Effects 0.000 title description 5
- 230000004044 response Effects 0.000 claims abstract description 7
- 230000002747 voluntary effect Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract 2
- 230000000694 effects Effects 0.000 description 5
- 210000000056 organ Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
- H01H71/402—Combined electrothermal and electromagnetic mechanisms in which the thermal mechanism influences the magnetic circuit of the electromagnetic mechanism
-
- 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
Definitions
- EP-A-28 958 discloses a switch of a type similar to that previously mentioned, which comprises a trigger lever connected to a contact part by means of an elastic transmission link between the lever. and the contact part, so as to contribute to the interruption of the electric current between the movable contact and the fixed contact.
- patent EP-A-18 553 discloses a switch in which, in order to compensate for a parasitic play between the core of the magnetic trip device and a hook control rod, on which the bimetallic strip acts, the core is stressed by a spring so as to remain in contact with the rod, at the start of the bimetal deflection.
- the object of the present invention is in particular to give a protection switch of the type mentioned above great simplicity of design and assembly, while retaining a small footprint for the lock-manual control member assembly.
- Another purpose is to provide a protection switch with high trigger sensitivity.
- An additional spring may be provided to contribute to the opening of the contact piece, but this opening is preferably produced by the aforementioned single elastic link.
- the contact piece is advantageously pivotally mounted on a pin which is fixed relative to the housing, the elastic link cooperating with at least one support provided on the contact piece to keep the latter applied to the fixed pin.
- the fixed support is part of a rigid and electrically conductive part integral with one of the terminals of the switch, the spring makes it possible to ensure a satisfactory electrical connection between the terminal and the contact part without requiring braid or other flexible conductive medium.
- the hook can advantageously constitute a lifter interposed between the core of the magnetic trip device and the bimetallic strip of the thermal trip device and arranged so that the beginning of deflection of the bimetallic strip causes a slight pivoting of the hook and a slight plunging of the core.
- a return spring associated with the core of the magnetic trigger preferably constitutes a means for returning the hook to its position for hooking the spoiler.
- the switch 10 comprises a manual control member M constituted by a rotary button of axis 01 and an automatic trigger member D provided with a magnetic trigger DM and a thermal trigger DT; the members M and D are mounted in the housing and are capable of separating the contact C1 from the contact C2 and therefore of opening the current path B1, B2 by means of a lock in response to the detection of an electrical fault via DM or DT triggers or respectively in response to a manual command.
- An interrupting chamber A is bordering on the contacts C1, C2.
- the output element of the triggering member D is a hook 12 rotatably mounted about a fixed axis 02 relative to the housing and cooperating by a fork 13 which has two fingers 13a and 13b with a stock 14 with respective surfaces d 'support 14a and 14b.
- the butt 14 is located at the end of a plunger core 15 of the magnetic trip device DM.
- the hook 12 further cooperates by means of a finger 16 with a deformable bimetal lever 17 of the thermal trip device DT.
- the lock comprises a trigger lever 18 in the form of a pendulum made of insulating material.
- the lever 18 is directly mounted on a tenon 19 of the manual member M and has, for this purpose, a slide 20 slightly inclined (FIG. 1), or even parallel (FIG. 2), with respect to the front face 21 of the circuit breaker, and cooperating with said stud.
- the tenon 19 is movable from a position X1 to a position X2 and vice versa, while the slide 20 is curved at 20a at its right end ( Figure 3).
- the lever 18 comprises, at a first end, a spoiler 22 resting on a support 23 of the hook (FIG. 6), this support being erasable as a result of the pivoting of the hook to allow tilting of the lever 18 in response to an electrical fault detected by the DM or DT trigger.
- the lever 18 comprises, towards its second open end or head 24, a guide groove 25 substantially perpendicular to the face 21 and cooperating with a guide pin 26 formed in the housing.
- a fulcrum or anchor point 27 is provided for a pin-shaped spring R in the shape of a V.
- the first branch 28 of the spring R is thus applied to the movable anchor point 27 in order to tend to tilt the lever 18 clockwise; the second branch 29 of the spring R is rotatably attached to a pin 30a formed on a rigid conductive part 30 which is fixed relative to the housing and which is secured to the terminal 81.
- the branch 29 is first applied to its end on a closing support 31 of a contact piece 32 separated from the lever 18 and constituting or carrying the contact C1, secondly applicable near the tip of the V on an opening support 36 of the piece 32, the supports 31 and 36 being located on either side of the fixed pin 30a.
- the application of the branch 29 on the closing support 31 ensures the closing of the contact C1 and its pressure on the contact C2; the application of the branch 29 on the opening support 36 allowing the opening of the contact C1.
- the direction of rotation of the contact piece C1 depends on the application of the differential force of the branch 29 on one or the other support 31, 36, this being a function of the position of the anchoring point 27 of branch 28.
- the manual control button M has a manual grip 33, the pin 19 is located substantially opposite the grip 33 relative to the axis 01 and at a distance from this axis allowing amplification of effort.
- a return spring 34 is associated with the button M to assist the latter during a manual opening command and to call it back to the stop position during a trip on fault.
- the magnetic trigger DM includes a spring 35 urging the core 15 so that the butt 14 of the latter pushes the finger 13a of the hook 12 in order to rap peel it in the armed position of figures 1 and 6.
- the hook 12 advantageously constitutes a spreader interposed between the magnetic core 15 and the bimetallic strip 17, so that the beginning of deflection of the bimetallic strip causes a very slight counterclockwise pivoting of the hook and therefore a slight plunge of the core. In this way, the trigger intensity threshold of the DM trigger is lowered; an overload detected by the bimetallic strip of the thermal release therefore causes greater sensitivity of the magnetic release.
- the finger 16 of the hook has an extension 37 located behind the bimetallic strip and provided with marks 16a which facilitate the adjustment of the bimetallic strip.
- the manual control button M in abutment on the housing occupies a position such that its lug 19 is in the position denoted X1 at the right end 20a of the slide 20.
- the spoiler 22 of the lever 18 is hooked on the support 23 of the hook 12, which is held in the position indicated in FIG. 1 by the spring 35 of the magnetic trip device DM.
- the spring R biases the lever 18 to make it tilt clockwise around the hinge pin 19, but is prevented by the above attachment.
- the upper end of the groove 25 of the lever 18 is against the guide pin 26.
- the hook 12 pivots counterclockwise and its bearing surface 23 emerges from the spoiler 22 by releasing the lever 18 (FIG. 7).
- the latter pivots clockwise around the tenon 19 then occupying position X1 under the effect of the upward stress exerted by the spring R on its anchor point 27.
- the branch 28 of the spring rises; the branch 29 which is integral therewith is entrained and comes to bear on the drive support 36 provided on the contact piece 32 and rotates the latter abruptly clockwise to open the contact CI.
- the user manually controls the button M to bring it by clockwise pivoting around 01 from its position in FIG. 1 to the position in FIG. 2, that is to say for carrying the post 19 from position X1 to position X2.
- the hook 12 remains stationary and the spoiler located at the right end of the lever 18 remains hooked on the support 22, the latter therefore serving as a tipping point for the lever.
- the hook is reset automatically under the effect of the return of the magnetic core to its upper position. It is sufficient to reset the switch by turning the manual control button counterclockwise around the axis 01 from the "off" position (figure 2) to the "on” position (figure 1); the lever 18 and the branch 28 are thus lowered spring, so that the branch 29 requests the closing support 31 of the contact piece 32 until C1 is applied to C2; the detachment of the branch 29 from the drive support 36 authorizes the contact pressure overtravel.
- the spoiler 22 comes to hang on its support 23. At the end of rearming, the tenon 19 is housed in the curved end 20a of the slide 20, so that the button M is forced to remain in the on position.
- a trigger display element can be provided on the head 24 of the lever 18 so that its displacement opposite a window formed in the recess of the front face 21 of the housing signals the trigger.
- Marks 16a are advantageously provided on the finger 16 of the bimetallic strip 17 in order to assist an operator during the process of adjusting the bimetallic strip.
- the manual control member M shown in the form of a pivoting button, could be produced in the form of a pusher.
- the actuation of the organ M can be carried out at from a polar device or additive close to the protection switch considered.
- the described elastic link constitutes the only means of mechanical interaction between the pivoting trigger lever and the contact part.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Push-Button Switches (AREA)
- Electrophonic Musical Instruments (AREA)
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86401923T ATE50663T1 (de) | 1985-09-20 | 1986-09-02 | Schutzschalter mit federnder lasche. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8513942A FR2587829B1 (fr) | 1985-09-20 | 1985-09-20 | Interrupteur de protection a biellette elastique |
FR8513942 | 1985-09-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0218497A1 EP0218497A1 (de) | 1987-04-15 |
EP0218497B1 true EP0218497B1 (de) | 1990-02-28 |
Family
ID=9323085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86401923A Expired - Lifetime EP0218497B1 (de) | 1985-09-20 | 1986-09-02 | Schutzschalter mit federnder Lasche |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0218497B1 (de) |
AT (1) | ATE50663T1 (de) |
DE (1) | DE3669226D1 (de) |
FR (1) | FR2587829B1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2648615B1 (fr) * | 1989-06-16 | 1991-09-13 | Hager Electro | Perfectionnements aux interrupteurs a coupure automatique, notamment aux disjoncteurs et disjoncteurs differentiels |
CN104752113B (zh) * | 2015-03-11 | 2017-05-17 | 浙江天正电气股份有限公司 | 一种电压电器电开关 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2132780A1 (de) * | 1971-07-01 | 1973-01-11 | Siemens Ag | Schutzschalter, insbesondere leitungsschutzschalter |
DE2646916A1 (de) * | 1976-10-18 | 1978-04-20 | Bbc Brown Boveri & Cie | Elektrischer leitungsschutzschalter fuer ueberstrom- und kurzschlusstromausloesung |
FR2455355A1 (fr) * | 1979-04-25 | 1980-11-21 | Saparel | Perfectionnements aux disjoncteurs modulaires |
FR2468991A1 (fr) * | 1979-10-26 | 1981-05-08 | Legrand Sa | Disjoncteur et son mecanisme d'accrochage |
DE3034790A1 (de) * | 1980-09-15 | 1982-03-25 | Siemens AG, 1000 Berlin und 8000 München | Leitungsschutzschalter |
-
1985
- 1985-09-20 FR FR8513942A patent/FR2587829B1/fr not_active Expired - Fee Related
-
1986
- 1986-09-02 AT AT86401923T patent/ATE50663T1/de not_active IP Right Cessation
- 1986-09-02 DE DE8686401923T patent/DE3669226D1/de not_active Expired - Lifetime
- 1986-09-02 EP EP86401923A patent/EP0218497B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE50663T1 (de) | 1990-03-15 |
DE3669226D1 (de) | 1990-04-05 |
FR2587829B1 (fr) | 1993-05-07 |
EP0218497A1 (de) | 1987-04-15 |
FR2587829A1 (fr) | 1987-03-27 |
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