EP1461817A1 - St sselschalter - Google Patents
St sselschalterInfo
- Publication number
- EP1461817A1 EP1461817A1 EP02795035A EP02795035A EP1461817A1 EP 1461817 A1 EP1461817 A1 EP 1461817A1 EP 02795035 A EP02795035 A EP 02795035A EP 02795035 A EP02795035 A EP 02795035A EP 1461817 A1 EP1461817 A1 EP 1461817A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- housing
- switch according
- elastomer
- tappet
- 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
- 229920001971 elastomer Polymers 0.000 claims abstract description 21
- 239000000806 elastomer Substances 0.000 claims abstract description 21
- 239000011324 bead Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/16—Operating parts, e.g. push-button adapted for operation by a part of the human body other than the hand, e.g. by foot
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
- H01H3/166—Self-adjusting mountings, transmissions and the like
Definitions
- the invention relates to a plunger switch, in particular for acting on a clutch pedal of a motor vehicle, with a housing in which an automatically adjustable, switching contacts acting plunger is guided, which interacts via a pawl toothing with a spring-loaded detent basket guided in a receiving part, the Receiving part is spring-loaded in the housing.
- EP 0 941 547 B1 discloses a tappet switch which is used as a brake light switch in a motor vehicle.
- the plunger switch comprises a housing which can be fastened to a holding element and in which an automatically adjustable plunger which is provided with pawl teeth is guided, and a spring-loaded slide which has a pawl toothing which interacts with that of the plunger.
- a movable switching element is acted upon, which is brought into engagement with a contact unit of an electrical switch.
- a tappet of the tappet switch When an actuated clutch pedal is released, a tappet of the tappet switch is acted on, which then transmits an electrical signal to an engine management system of the motor vehicle. For example, an activated cruise control is switched off when the clutch is actuated. Due to the actuation path of the clutch pedal and the tappet switch, there is a relative movement between the tappet and the clutch pedal, which causes a scratching noise due to the material pairing. Furthermore, in particular the actuation of the clutch pedal often takes place relatively quickly, which results in the plunger arranged in a spring-loaded receptacle advancing and thus a relatively hard striking of the receptacle on an assigned end face of a housing. The striking causes a popping noise which, together with the scratching noise, is perceived by a driver of the motor vehicle as disturbing.
- the object is achieved in that the free end of the plunger projecting beyond the housing is provided with an elastomer.
- the elastomer can, for example, be applied to the free end of the plunger in the form of plates or dots and, due to its noise-damping properties, prevents the Noise development when the plunger is loaded using a relatively hard material. It should be noted here that the tappet itself is made from a relatively strong and stiff material in order to withstand the strength requirements. The application of the elastomer is possible without complex structural changes to the plunger or the plunger switch and can be accomplished with little manufacturing outlay, which is why the plunger switch has a simple and inexpensive construction.
- the free end of the plunger preferably has a spherical radius, the spherical radius and an adjacent section of the plunger being provided with a cap made of an elastomer.
- the ball radius at the free end of the plunger ensures a punctiform contact surface and thus also a small friction surface, which reduces noise compared to a large contact surface.
- the elastomeric cap can be inexpensively manufactured in large quantities in the injection molding process and, when assembled, engages over the ball radius and the adjoining section of the plunger, as a result of which it is held securely at the free end of the plunger.
- the portion of the plunger overlapped by the cap advantageously has at least one undercut into which a rear grip of the cap engages.
- the undercut is preferably in the form of an annular groove and the undercut is in the correct responding bead formed.
- the outer wall of the plunger is expediently flush with the elastomer. This ensures that the plunger with the elastomer can be inserted into the same by a guide assigned to the housing.
- the diameter of the portion of the tappet covered with the cap is reduced by twice the wall of the cap compared to the diameter of the tappet.
- the free end of the plunger made of a thermoplastic and the elastomer or the elastomeric cap are formed in one piece.
- the one-piece connection is preferably made by manufacturing the plunger together with the elastomer or the elastomeric cap in a two-component injection molding process, so that additional assembly of these components is not necessary.
- the receiving part abuts the end face of the housing in the unloaded state of the tappet and at least one stop made of an elastomer is arranged in the contact area.
- the stop made of the elastomer prevents the development of noise caused by the plunger rushing forward with the receiving part when the receiving part strikes the associated end face in the interior of the housing by the elastomer stop damping the impact noise.
- the stop preferably comprises at least three evenly Bars distributed over the front.
- the arrangement of the webs results in a linear, tilt-free contact of the receiving part on the housing.
- the stop is essentially annular.
- the stop is advantageously formed in one piece with an inner housing of the housing.
- the one-piece connection can be made in the two-component injection molding process when manufacturing the inner housing, which is made of a thermoplastic material.
- Fig.l is a sectional view of the plunger switch according to the invention.
- FIG. 2 shows a further sectional view of the plunger switch according to FIG. 1.
- the plunger switch comprises a two-part housing 1, which consists of an inner housing 2 and an outer housing 3, which are essentially cylindrical in cross section.
- the inner housing 2 is clipped into the outer housing 3 and closed with a clipped-on cover 4.
- a holding device 5 for mounting the tappet switch is molded onto the outer housing 3 on the end face opposite the cover 4.
- a guide sleeve 6 for an automatically adjustable tappet 7 extends into the interior of the housing 1.
- the tappet 7 has at its end on the housing side a plurality of ring grooves 8 which are inserted in a latching manner into a pawl toothing 9 of a latching basket 10.
- the pawl teeth 9 of the locking basket 10 is in grooves
- the locking basket 10 has a circumferential guide 13 and is slidably guided in a receiving part 14, the guide 13 being designed in such a way that it serves as a stop for a prestressed first compression spring 16 between the guide 13 and a bottom 15 of the receiving part 14.
- the receiving part 14 is provided with an annular shoulder 17 which is supported on the circumferential side on the inner housing 2. Between the annular shoulder 17 and the cover 4 there is a second compression spring 18 which prestresses the receiving part 14 in the direction of the holding device 5 '.
- the receiving part 14 lies on a web 19 of a stop 20 made of an elastomer which is assigned to the inner housing 2 of the housing 1.
- the stop 20 comprises three webs 19 evenly distributed over the end face of the inner housing 2 and is together with the inner housing 2 in a two-component Injection molding process made.
- the housing 1 is assigned a lateral housing part 21 for receiving a connection contacts 22 and switching contacts 23 having a contact unit 24, the switching contacts 23 provided with a switching cam 34 being acted upon by means of an actuator 33 molded onto the receiving part 14.
- the end of the plunger 7 provided with the ring grooves 8 is delimited in the direction of the free end by a circumferential collar 25 which, in the delivery state of the plunger switch, bears against a shoulder 26 of the outer housing 3.
- the free end of the essentially cylindrical plunger 7 protruding beyond the housing 1 is provided with a spherical radius 27 and carries a cap 28 made of an elastomer.
- the cap 28 has rear grips 29 which engage in corresponding undercuts 30 of the section 31 of the plunger 7 overlapped by the cap 28.
- the rear handles 29 of the cap 28 are designed as circumferential beads and the undercuts 30 of the plunger 7 are designed as ring grooves.
- the section 31 of the plunger 7 overlapped by the cap 28 is tapered such that the outside of the cap 28 and the outside of the plunger 7 form a uniform surface.
- the plunger 7 and the elastomeric cap 28 are manufactured together in one piece in the two-component injection molding process.
- the adjusted tappet 7 When the adjusted tappet 7 is actuated by means of a clutch pedal of a motor vehicle, there is a relative movement between the free end of the tappet 7 and the clutch pedal. Because of the elastomeric cap 28 that the free Spanned end of the plunger 7, scratching noises caused by the relative movement and the materials of the friction partners, namely the plunger 7 on the one hand and the clutch pedal on the other hand, are prevented.
- the receiving part 14 is displaced in the direction of the cover 4 against the action of at least the second compression spring 18.
- the receiving part 14 snaps forwards through the action of the second compression spring 18 in the direction of the holding device 5 and impacts with its end face on the webs 19 of the elastomeric stop 20, which are integrally connected to the inner housing 2.
- the elastomeric material of the webs 19 of the stop 20 prevents or reduces an impact noise of the receiving part 14.
Landscapes
- Push-Button Switches (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002100107 DE10200107A1 (de) | 2002-01-04 | 2002-01-04 | Stößelschalter |
| DE10200107 | 2002-01-04 | ||
| PCT/DE2002/004725 WO2003060938A1 (de) | 2002-01-04 | 2002-12-24 | Stösselschalter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1461817A1 true EP1461817A1 (de) | 2004-09-29 |
| EP1461817B1 EP1461817B1 (de) | 2006-03-01 |
Family
ID=7711490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02795035A Expired - Lifetime EP1461817B1 (de) | 2002-01-04 | 2002-12-24 | Stösselschalter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1461817B1 (de) |
| DE (2) | DE10200107A1 (de) |
| WO (1) | WO2003060938A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1710821B1 (de) * | 2005-04-07 | 2007-12-19 | Delphi Technologies Inc. | Stösselschalter |
| CN103410903B (zh) * | 2013-07-22 | 2016-08-10 | 宁波鑫鑫鑫寅电气有限公司 | 一种阻尼橡胶缓冲器 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1985652U (de) * | 1967-09-29 | 1968-05-22 | Telefunken Patent | Daempfungsscheibe zur geraeuschdaempfung bei drucktastenschaltern. |
| DE7903019U1 (de) * | 1979-02-05 | 1979-05-23 | Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart | Haushaltgerät mit einer Schalteinrichtung |
| EP0260659A3 (de) * | 1986-09-16 | 1988-07-20 | OMRON Corporation | Mikroschalter |
| FR2644285B1 (fr) * | 1989-03-08 | 1994-07-01 | Itt Composants Instr | Relais electromagnetique, notamment pour la commande d'un disjoncteur ou d'un interrupteur differentiel |
| FR2650435B2 (fr) * | 1989-03-08 | 1994-08-26 | Itt Composants Instr | Perfectionnement a un relais electromagnetique |
| FR2693286B1 (fr) * | 1992-07-01 | 1994-08-05 | Valeo Commutation | Tableau de commande a touches, en particulier pour la commande d'une installation de climatisation de l'habitacle d'un vehicule automobile. |
| JP3109635B2 (ja) * | 1993-09-17 | 2000-11-20 | アルプス電気株式会社 | プランジャスイッチ |
| DE19649816C1 (de) * | 1996-12-02 | 1998-04-23 | Eaton Controls Gmbh | Stößelschalter, insbesondere Bremslichtschalter für Kraftfahrzeuge |
-
2002
- 2002-01-04 DE DE2002100107 patent/DE10200107A1/de not_active Withdrawn
- 2002-12-24 WO PCT/DE2002/004725 patent/WO2003060938A1/de not_active Ceased
- 2002-12-24 EP EP02795035A patent/EP1461817B1/de not_active Expired - Lifetime
- 2002-12-24 DE DE50205971T patent/DE50205971D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03060938A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10200107A1 (de) | 2003-07-17 |
| DE50205971D1 (de) | 2006-04-27 |
| EP1461817B1 (de) | 2006-03-01 |
| WO2003060938A1 (de) | 2003-07-24 |
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