EP1472707A1 - St sselschalter - Google Patents
St sselschalterInfo
- Publication number
- EP1472707A1 EP1472707A1 EP03706239A EP03706239A EP1472707A1 EP 1472707 A1 EP1472707 A1 EP 1472707A1 EP 03706239 A EP03706239 A EP 03706239A EP 03706239 A EP03706239 A EP 03706239A EP 1472707 A1 EP1472707 A1 EP 1472707A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- spring
- inner housing
- switch according
- cage
- 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
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—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 a brake light switch for a motor vehicle, with an outer housing for receiving an inner housing, which can be rotated in an assembly and an operating position, in which a spring-loaded spring basket is guided for receiving a spring-loaded latching basket, which has a pawl toothing with a toothing provided, automatically adjustable plunger, the spring cage having a switching member projecting through an intermediate wall of the outer housing for acting on switching contacts.
- EP 0 941 547 B1 is a tappet switch, in particular a "brake light switch " .
- a tappet switch for a motor vehicle, known, which comprises an outer housing and an inner housing.
- An automatically adjustable plunger provided with teeth is guided in the inner housing.
- a spring-loaded locking cage is provided, which has a pawl toothing that interacts with the toothing of the plunger.
- the inner housing is in relation to the outer housing an assembly and an operating position rotatable. In the assembly position, the spring cage rests under the action of a compression spring on the end face of the inner housing pointing in the direction of the tappet.
- the plunger switch which is generally used as a brake light switch and is acted on when the brake pedal is not actuated, is installed in a pedal block of a motor vehicle
- the plunger is adjusted by inserting the plunger switch into an installation opening.
- the plunger which is held displaceably in a maximum extended end position in the locking cage, is pushed into the locking cage by pressing on the brake pedal, the compression spring prestressing the spring cage counteracting the direction of insertion of the plunger. Due to the effect of the compression spring assigned to the spring cage, it is possible that the toothing of the tappet jumps over some locking positions in the pawl toothing and the tappet is therefore not exactly adjusted.
- the object is achieved in that in the mounting position of the inner housing, the spring cage is maximally prestressed due to a positive guidance of the switching element in the intermediate wall in the direction of action of the plunger which is not arranged in an inserted end position.
- the plunger Due to the positive guidance of the switching element, the plunger is brought into the position it is in when the plunger switch is acted upon to a maximum, which is given in the installed state. takes.
- the length of the plunger is adjusted due to its interlocking teeth with the ratchet teeth of the locking cage. Since the spring cage is in a maximum prestressed end position, it is not shifted during the adjustment, which is why an accurate positional adjustment of the plunger without jumping over latching positions is ensured due to a springing of the spring cage.
- the intermediate wall preferably has a recess, the end face of which the switching element rests in a spring-loaded manner is designed as an inclined plane.
- the inclined plane expediently opens out on the one hand into a stop and on the other hand into a contact surface for the switching element, the switching element being in contact with the contact surface in the mounting position and in the unoccupied state in the operating position with the stop.
- the distance between the stop and the contact surface corresponds to an actuation stroke of the plunger or spring cage.
- the switching element preferably comprises an actuating surface for the switching contacts, which is connected to the spring cage via a web, the web projecting through the recess. Due to its dimensions, the actuating surface ensures that the switching contacts are reliably acted upon the recess projecting through and resting on the inclined plane has a relatively small contact and thus also friction surface.
- the inner housing In order to secure the inner housing against unintentional twisting, the inner housing is held in the outer housing in the assembled and operating positions.
- the spring cage In the operating position of the inner housing, the spring cage is expediently displaceable against actuation of the plunger against the pretension of the spring cage. The spring cage with the associated switching element in the inner housing is then moved over the plunger.
- the latching basket fixes the tappet in the operating position of the inner housing.
- the inner housing is advantageously closed with a base on which a first compression spring is supported, which prestresses the spring cage against the direction of actuation of the tappet.
- the inner housing which is provided with the base and accommodates the spring cage and the first compression spring, thus represents a structural unit which is to be mounted separately and is inserted into the outer housing.
- the outer housing preferably has a guide sleeve protruding into the locking cage with alternately arranged grooves and webs, the pawl teeth of the locking cage lying in the mounting position with play in the grooves and in the loading drive position on webs.
- the pawl toothing is guided with play in the grooves of the guide sleeve, so that the pawl toothing can widen slightly when the plunger is displaced during its adjustment, and a locking sliding of the plunger toothing in the resilient pawl toothing is ensured.
- the pawl teeth are pressurized by means of the webs of the guide sleeve, which prevents displacement of the tappet.
- the outer housing is expediently provided for fixing the tappet switch in an installation opening with two diametrically opposite fastening arms which are arranged at a distance from a shoulder of the outer housing.
- the inner housing is assigned a shoulder of the outer housing projecting fastening cams, which is aligned in the mounting position of the inner housing in alignment with one of the fastening arms and offset in the operating position of the inner housing to the fastening arms.
- a type of bayonet lock is thus provided for fastening the plunger switch in an installation opening, the locking of the plunger switch being accompanied by the rotation of the inner housing in the operating position.
- the spring cage comprises a base on which a second compression spring is supported, which prestresses the latching cage with the tappet against the actuating direction of the tappet.
- FIG. 1 shows an exploded view of a tappet switch according to the invention
- FIG. 2 shows a sectional view of the plunger switch according to FIG. 1 in the assembly position
- FIG. 3 is a sectional view of the plunger switch according to FIG. 1 in the operating position
- FIG. 4 shows a further sectional view of the plunger switch according to FIG. 2,
- FIGS. 2 and 3 shows an illustration of a side view of part of the tappet switch according to FIGS. 2 and
- FIG. 6 shows an illustration of a side view of part of the tappet switch according to FIG. 3.
- the plunger switch comprises an outer housing 1 and an inner housing 2, which can be rotated into an assembly and an operating position in the outer housing 1 and which are essentially cylindrical in cross section.
- a housing part 3 is formed for receiving switching contacts 5 connected to connection contacts 4, wherein in the housing part 3 a cover 38 is inserted.
- the outer housing 1 and the housing part 3 are divided by means of an intermediate wall 6.
- the outer housing 1 has two diametrically opposite fastening arms 8 which, together with a fastening cam 10 of the inner housing 2 projecting through a shoulder 9 of the inner housing 2, form a bayonet catch for fastening the plunger switch in an installation opening.
- the outer housing 1 comprises a guide sleeve 15 which is provided with inwardly facing, alternately arranged grooves 13 and webs 14 and extends into the interior of the outer housing 1.
- the inner housing 2 is closed on the end face opposite the plunger 7 with a base 17 provided with end approaches 16.
- a spring cage 18 is slidably mounted with a switching element 19 formed on the side, the switching element 19 with .sine ..an .actuating surface 20 for. the switching contacts 5 provided web 21 projects through a longitudinal slot 22 of the inner housing 2 and the intermediate wall 6 of the outer housing 1.
- the spring cage 18 is biased in the direction of the shoulder 9 of the outer housing 1 by means of a first compression spring 23, which is supported between the base 17 and an annular shoulder 24 of the spring cage 18.
- a longitudinally displaceable locking cage 25 is inserted so that it cannot be lost.
- the locking cage 25 is biased in the direction of the shoulder 9 of the outer housing 1 by a second compression spring 26, which is arranged between a collar 27 of the locking cage 25 and a bottom 28 of the spring cage 18.
- the latching basket 25 comprises a pawl toothing 29 which essentially consists of four resilient pawls 30 which are aligned in a cross shape with respect to one another.
- the plunger 7 with a toothing 31 is inserted into the pawl toothing 29.
- the toothing 31 is limited by a circumferential stop 32, which specifies the maximum insertion position of the plunger 7 in the locking basket 25.
- the free end of the plunger 7, which bears against an actuating member in the installed state of the plunger switch, is provided with a ball radius 33.
- the spring cage 18 In the mounting position of the inner housing 2, the spring cage 18 is held due to a positive guide 34 assigned to the intermediate wall 6 of the outer housing 1.
- the web 21 of the switching element 19 lies against a contact surface 35 of the positive guide 34, which is designed as an inclined plane 36, due to the spring action of the first compression spring 23.
- the mounting cam 10 of the inner housing 2 is aligned below one of the mounting arms 8 of the outer housing 1 ..
- the plunger 7 is in an extended end position between the. Pawl teeth 29, the pawls 30 lie in the grooves 13 of the guide sleeve 15 with little play.
- the ball radius 33 is pressed against the actuating member, the toothing 31 of the plunger 7 sliding in the pawl toothing 29 latching in the direction of the base 17.
- the first compression spring 23 cannot yield in this direction, since it is maximal due to the positive guide 34 is biased.
- the adjustment of the plunger 7 does not lead to skipping of locking positions, and the plunger 7 compensates for an installation-related tolerance due to the displacement in the pawl toothing 29.
- the plunger 7 has reached its end position when the shoulder 9 of the outer housing 1 bears against the associated end face of the installation opening.
- the inner housing 2 When the plunger switch is installed, the inner housing 2 is fixed in a rotationally fixed manner in the installation opening by means of the fastening cams 10 and the outer housing 1 is rotated relative to the inner housing 2, so that the inner housing 2 reaches its locked operating position.
- the spring cage 18 slides in the direction of the shoulder 9 of the outer housing 1.
- the web 21 of the switching element 19 lies against the inclined plane 36 of the positive guide 34 due to the action of the first compression spring 23.
- the pawls 30 of the pawl toothing 29 rest against the webs 14 of the guide sleeve 15, which press the pawls 30 against the tappet 7 and fix it in such a way that a displacement in the pawl toothing 29 is prevented.
- the fastening cam 10 of the inner housing 2 is rotated relative to the fastening arms 8 of the outer housing 1 and locks the tappet switch in the installation opening.
- the plunger 7 slides out of the outer housing 1, the web 21 of the switching member 19 coming to a stop 37 on the inclined plane 36.
- the plunger 7 is displaced in the direction of the base 17 and the spring cage 18 reaches the end position with maximum preload of the first compression spring 23.
Landscapes
- Push-Button Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10204451 | 2002-02-04 | ||
| DE2002104451 DE10204451A1 (de) | 2002-02-04 | 2002-02-04 | Stößelschalter |
| PCT/DE2003/000149 WO2003067619A1 (de) | 2002-02-04 | 2003-01-21 | Stösselschalter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1472707A1 true EP1472707A1 (de) | 2004-11-03 |
| EP1472707B1 EP1472707B1 (de) | 2006-09-13 |
Family
ID=7713644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03706239A Expired - Lifetime EP1472707B1 (de) | 2002-02-04 | 2003-01-21 | STÖßELSCHALTER |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1472707B1 (de) |
| DE (2) | DE10204451A1 (de) |
| WO (1) | WO2003067619A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1710821B1 (de) * | 2005-04-07 | 2007-12-19 | Delphi Technologies Inc. | Stösselschalter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19649816C1 (de) * | 1996-12-02 | 1998-04-23 | Eaton Controls Gmbh | Stößelschalter, insbesondere Bremslichtschalter für Kraftfahrzeuge |
| US6204463B1 (en) * | 1999-12-21 | 2001-03-20 | Methode Electronics Malta Ltd. | Self-adjusting switch mechanism with anti-adjustment protection |
-
2002
- 2002-02-04 DE DE2002104451 patent/DE10204451A1/de not_active Withdrawn
-
2003
- 2003-01-21 EP EP03706239A patent/EP1472707B1/de not_active Expired - Lifetime
- 2003-01-21 DE DE50305029T patent/DE50305029D1/de not_active Expired - Lifetime
- 2003-01-21 WO PCT/DE2003/000149 patent/WO2003067619A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03067619A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1472707B1 (de) | 2006-09-13 |
| DE10204451A1 (de) | 2003-08-07 |
| DE50305029D1 (de) | 2006-10-26 |
| WO2003067619A1 (de) | 2003-08-14 |
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