EP1224100A1 - Commutateur electrique rotatif, notamment pour un moteur d'essuie-glace de vehicule automobile - Google Patents
Commutateur electrique rotatif, notamment pour un moteur d'essuie-glace de vehicule automobileInfo
- Publication number
- EP1224100A1 EP1224100A1 EP00974599A EP00974599A EP1224100A1 EP 1224100 A1 EP1224100 A1 EP 1224100A1 EP 00974599 A EP00974599 A EP 00974599A EP 00974599 A EP00974599 A EP 00974599A EP 1224100 A1 EP1224100 A1 EP 1224100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zone
- contact
- disc
- annular
- free end
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/60—Angularly-movable actuating part carrying no contacts
- H01H19/605—Angularly-movable actuating part carrying no contacts in which the actuation of the contacts depends on the direction of rotation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
Definitions
- the present invention relates to a rotary electrical switch.
- the invention relates more particularly to a rotary switch for stopping in the position of an electric motor, in particular for stopping in the parking position of an engine for the alternating sweep drive of a wiper mechanism.
- a motor vehicle of the type which comprises:
- a disc driven in rotation by the motor an annular upper face of which comprises at least one electrical contact track of conductive material in the form of an annular sector and which is angularly delimited by a front edge of the end of the track beyond which extends angularly towards the front, an annular non-conductive stop zone of electricity which extends angularly towards the rear, parallel to the annular contact track, by a neutral annular non-conductive zone;
- a fixed contact blade which extends generally in a tangential direction, one front distal end of which is fixed and the other rear proximal free end of which is in particular capable of cooperating, depending on the angular position of the disc, either with the annular conductive contact track, either with the stopping zone; and of the type in which the disc has on its upper face a cam which extends angularly from back to front to said front edge of the end of the contact track, which radially separates the annular contact track from the neutral annular zone, which is delimited radially by an internal lateral face and
- the neutral zone of such a switch makes it possible to avoid the phenomenon of tremor or "bell" which occurs when one voluntarily applies to the arm of 'wiper, and therefore the electric motor and the disc of the switch which is linked in rotation to the motor, an effort tending to cause a rotation of the disc from back to front against its direction of rotation before its automatic stop.
- the neutral zone and the cam which automatically guides the free end of the contact blade towards the neutral zone, make it possible to prevent the motor from inadvertently restarting forward and then stopping again when the the free end of the contact blade is again facing the stop zone, and so on.
- the invention provides a switch of the type mentioned above, characterized in that the blade cooperates with a lateral face of the cam when the disc rotates in the first direction, being bent transversely as long as its free end has not crossed, from back to front, the front edge of the end of the contact track, and the contact blade is in its free state not bent transversely when on the one hand its rear free end cooperates with the zone when, on the other hand, it cooperates with the neutral zone.
- the stop zone is substantially coplanar with the contact track
- the neutral zone is shaped like a ramp
- the neutral annular zone extends in a plane which is vertically offset upwards with respect to the plane of the contact track, and the front end edge of the contact track is formed into a stop with which the end cooperates free rear of the contact blade, of rounded conformation, to cause a vertical displacement upwards of this free end at a height corresponding to the altitude of the neutral annular zone;
- lateral face of the cam is its internal lateral face, and the radius of this internal lateral face progressively decreases from its rear free end edge to its front free end edge;
- the cam is of substantially constant radial thickness over its entire length; - the annular stop zone and the neutral annular zone are two sections of tracks made of material insulating from electricity;
- the contact blade extends substantially dan a vertical plane
- the body of the disc is a molded piece of electrically insulating material
- FIG. 1 is a schematic perspective view on a large scale of the two main components of a rotary electrical switch according to a first embodiment of the invention
- Figure 2 is a simplified view of Figure 1 in which the engine stop contact blade is shown in position of contact with the contact track;
- Figure 3 is a top view, similar to that of Figure 2, illustrating the position of the contact blade when approaching the end of the contact track;
- Figure 4 is a view similar to that of Figure 2 which illustrates the position of the contact blade in the engine stop position
- FIG. 1 is a view similar to those of Figures 2 and 4 in which the contact blade is illustrated in cooperation with the neutral annular zone;
- FIGs 6 to 9 are views similar to those of Figures 2 to 5 which illustrate a second embodiment of an electric switch according to the teachings of the invention.
- the terms vertical, horizontal, upper, lower, front, rear will be used without limitation, with reference to the figures and to simplify the description.
- a rotary electrical switch 10 consisting essentially, and in known manner, by a disc 12 mounted rotating in two directions around a vertical axis A and by a contact carrier 14 arranged here vertically above the disc 12.
- the rotating disc 12 is for example a part of generally annular shape molded from insulating plastic material and it is rotated in both directions by an attached hub 16 while its periphery can be provided with a toothed ring 18 which is integral in rotation in order to constitute a toothed pinion.
- the toothed pinion 18 belongs for example to a geared motor assembly for the alternating sweep drive of a wiper mechanism, the toothed pinion being able to be mounted directly on the output shaft of the electric motor (not shown) of the geared motor. , or belong to a cascade of pinions and toothed wheels of the gearmotor.
- the contact carrier 14 consists of an insulating body made of plastic material 20 which is, for example, molded around three electrical contact blades 22, 24 and 26 which, from the insulating support 20 which is fixed relative to the disc 12, generally extend vertically downwards and in a generally tangential orientation in the direction of the annular upper face of the disc 12.
- the three contact blades 22, 24 and 26 are produced by cutting and bending a conductive sheet and are thus produced in the form of elastically deformable elements to ensure electrical contact with different areas or parts of a rotating disc 12 as will be explained later.
- This annular upper face is provided with a coating of conductive material, which is for example produced in the form of a metal plate constituting an insert, or by a metallization layer in the general shape of a ring to constitute an annular contact track. 28.
- the annular contact track 28 delimits an annular track constituted by the surface of insulating material 30 from the body of the disc 12 and with which the lower end 23 of the first contact blade 22 cooperates permanently.
- the insulating track 30 is not complete insofar as it is interrupted over an angular sector 33 in which the contact track 28 extends.
- the lower free end 25 of the second contact blade 24 is permanently in contact by elastic support with the annular portion, radially intermediate, of the contact track 28 which extends in a continuous ring.
- the third contact blade 26, which constitutes the stop blade of the rotary switch, has an intermediate fold
- the lower free end 36 of the stop contact blade is shaped with a rounded lower edge 38 which can cooperate in elastic support with the upper face of the disc 12, and in particular by contact with the upper face 29 of the contact track 28, which extends in a horizontal plane perpendicular to the axis A.
- the upper face of the disk 1 2 comprises a cam 40 formed in relief under the form of a strip of insulating material of substantially constant radial thickness.
- the cam 40 extends according to a determined angular sector and it is angularly delimited by a vertical edge of free front end 42 and by a vertical edge of free rear end 44.
- the cam 40 is delimited radially inwards by an internal vertical lateral face 46 and by an external vertical lateral face 48.
- the conformation of the cam 40 according to the invention is such that the radius of curvature of the internal lateral face 46 decreases progressively from its rear edge 44 to its front edge 42.
- the conformation and the geometric arrangement of the blade 26 are such that when its lower free end 36 faces the cam 40, the blade 26 is flexed elastically and transversely relative to the plane in which extends the section 34 so as to be in elastic abutment, radially outwards, against the internal lateral face 46.
- the contact track 28 is interrupted to delimit an annular stop zone ZA made of insulating material with which the rear end of 36, 38 cooperates. of the contact blade 26 when the disc 12 is in its angular stop position illustrated in FIG. 4.
- the insulating track constituting the stop zone ZA extends angularly, from front to rear, beyond the edge 42 to form a neutral zone ZN which extends radially to the exterior of the cam 40, that is to say along its lateral face 48.
- the neutral zone ZN which extends the stop zone ZA is shaped as a ramp, that is to say that the dimension or altitude of its free upper face gradually increases from the front edge 42 of the cam 40 to its rear edge 44.
- the disc 12 normally rotates in the first direction S 1 indicated in FIG. 2, that is to say in the counterclockwise direction considering the figures which corresponds to the rotational drive of the electric motor.
- the blade 26, 34 covers, under the effect of its stress elastic, are in a free state of rest, i.e. that the rear free end 36, 38 suddenly moves radially outward to come to occupy its position shown in FIG. 4 in which it is in vertical downward support with the stop zone ZA.
- the electric motor is cut off automatically and the contact blade 26 is no longer flexed elastically in the transverse direction.
- this rotation in the direction S2 does not cause the motor to restart, thus avoiding the so-called bell phenomenon (see FIG. 5).
- ZN is of substantially constant height, or altitude, and it is offset vertically upwards with respect to the horizontal plane of the upper face 29 of the contact track 28.
- a lug 50 formed in relief above the plane of the upper face 29 of the contact track 28.
- the vertical rear face 52 of radial orientation, of the lug 50 constitutes a stop with which is capable of cooperating the lower edge of the rounded rear free end 38 of the contact blade 26.
- the blade 26 automatically causes the free end to emerge radially outwards rear 36 so that it comes to the stop zone ZA. As before, if the disc 12 is rotated manually in the opposite direction S2, the free end 36 of the contact blade 26 will pass through the neutral zone ZN.
- zone ZN If its previous travel over zone ZA, taking into account the stopping time and braking of the electric motor, has angularly moved it forwards from zone ZN, the free end 36 can then go back up on the latter by l 'through an insulating section ZR in the form of a ramp (see Figure 7).
- the lateral face outer 48 is made of flexible or elastically deformable material and the blade deforms it instead of extending opposite.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9913419 | 1999-10-27 | ||
FR9913419A FR2800507B1 (fr) | 1999-10-27 | 1999-10-27 | Commutateur electrique rotatif, notamment pour un moteur d'essuie-glace de vehicule automobile |
PCT/FR2000/003018 WO2001030616A1 (fr) | 1999-10-27 | 2000-10-27 | Commutateur electrique rotatif, notamment pour un moteur d'essuie-glace de vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1224100A1 true EP1224100A1 (fr) | 2002-07-24 |
Family
ID=9551403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00974599A Withdrawn EP1224100A1 (fr) | 1999-10-27 | 2000-10-27 | Commutateur electrique rotatif, notamment pour un moteur d'essuie-glace de vehicule automobile |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1224100A1 (fr) |
FR (1) | FR2800507B1 (fr) |
WO (1) | WO2001030616A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2194585B1 (es) * | 2001-06-18 | 2005-03-01 | Valeo Sistemas De Seguridad Y De Cierre, S.A. | Contacto para interruptor, en especial aplicable a interruptores de arranque giratorios para vehiculos e interruptor giratorio dotado de dicho contacto. |
PL2675479T3 (pl) | 2011-02-15 | 2016-09-30 | Cytotoksyczne pochodne benzodiazepiny | |
FR2982220B1 (fr) * | 2011-11-07 | 2014-01-10 | Valeo Systemes Dessuyage | Commutateur electrique pour systeme d'entrainement de balai d'essuyage et systeme d'entrainement associe |
DE102012223894A1 (de) * | 2012-12-20 | 2014-06-26 | Robert Bosch Gmbh | Antriebseinrichtung mit positionsabhängiger Schalteinrichtung für Signalauswertung auf ein abfallendes Signal |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3022442A1 (de) * | 1980-06-14 | 1981-12-24 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Elektrische stellvorrichtung, insbesondere zum antrieb von scheibenwischern an einem kraftfahrzeug |
DE3818563A1 (de) * | 1988-06-01 | 1989-12-07 | Swf Auto Electric Gmbh | Elektromotor zum antrieb von scheibenwischern an kraftfahrzeugen |
DE4228492C2 (de) | 1992-08-27 | 1995-04-13 | Teves Gmbh Alfred | Elektromotor, insbesondere zum Antrieb von Scheibenwischern an Kraftfahrzeugen |
-
1999
- 1999-10-27 FR FR9913419A patent/FR2800507B1/fr not_active Expired - Lifetime
-
2000
- 2000-10-27 WO PCT/FR2000/003018 patent/WO2001030616A1/fr not_active Application Discontinuation
- 2000-10-27 EP EP00974599A patent/EP1224100A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0130616A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2800507B1 (fr) | 2002-01-04 |
WO2001030616A1 (fr) | 2001-05-03 |
FR2800507A1 (fr) | 2001-05-04 |
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