EP1994244A1 - Element de commutation - Google Patents

Element de commutation

Info

Publication number
EP1994244A1
EP1994244A1 EP07726394A EP07726394A EP1994244A1 EP 1994244 A1 EP1994244 A1 EP 1994244A1 EP 07726394 A EP07726394 A EP 07726394A EP 07726394 A EP07726394 A EP 07726394A EP 1994244 A1 EP1994244 A1 EP 1994244A1
Authority
EP
European Patent Office
Prior art keywords
switching
housing
switching element
support plate
contacts
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
Application number
EP07726394A
Other languages
German (de)
English (en)
Other versions
EP1994244B1 (fr
Inventor
Mirko Schindler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huf Huelsbeck and Fuerst GmbH and Co KG
Original Assignee
Huf Huelsbeck and Fuerst GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huf Huelsbeck and Fuerst GmbH and Co KG filed Critical Huf Huelsbeck and Fuerst GmbH and Co KG
Publication of EP1994244A1 publication Critical patent/EP1994244A1/fr
Application granted granted Critical
Publication of EP1994244B1 publication Critical patent/EP1994244B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01H13/04—Cases; Covers
    • H01H13/08—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • 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
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • 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
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings

Definitions

  • the present invention is directed to a switching element for generating at least one electrical signal or switching state for locking, unlocking, opening and / or closing of a security / or locking system, in particular in vehicles, directed according to the preamble of claim 1.
  • this switching element may be arranged in a door handle, wherein in addition to the switching element further electrical and / or electronic components may be present.
  • a proximity sensor and an actuation sensor as well as at least a part of the evaluation electronics can be present in the door handle.
  • the switching element itself can serve as a touch or actuation sensor.
  • an electrical component in the form of an electrical switch is known, which is used in keyboards, control panels or the like.
  • This switching element consists of various elements, which are assembled together to form a component.
  • the entire switching element is then arranged with its housing on a conductor track, in particular by the SMD (Surface Mounted Device) technique.
  • SMD Surface Mounted Device
  • the switching element itself is protected against environmental influences, including a sealing lip is provided in the housing.
  • the structure of the electrical switching element is complicated and expensive.
  • DE 101 32 925 A1 proposes to use a piezoelectric element as the switching element.
  • piezo elements basically have the disadvantage that they do not output any tactile feedback upon actuation. This Disadvantage can be compensated in turn by electromechanical switching elements. However, these must again be encapsulated consuming against environmental influences.
  • the object of the present invention is now to be seen to obtain a switching element with a small installation depth and few components, which is simple and inexpensive to produce.
  • this switching element should also provide tactile feedback to an operator when operating.
  • This object is achieved by a switching element having the features of claim 1, which has the following special significance.
  • the switching element according to the invention has at least one contact element, whereby an electrical connection between at least two existing electrical switching contacts can be generated by an actuation of the switching element.
  • a carrier plate is provided, which has, inter alia, electrical connection contacts for the switching element. These connection contacts can simply consist of conductor tracks or of so-called solder pads, to which, for example, an electrical line can be connected.
  • a housing for the switching element is provided, which surrounds the contact element and at least partially or completely the carrier plate - protected against environmental influences - surrounds.
  • the support plate itself is arranged wholly or partially stationary in the housing. If the carrier plate is arranged completely in the housing, only one connection connection leads out of the switching element, in particular the housing.
  • the carrier plate is only partially arranged in the housing, the protruding part of the carrier plate with its conductor tracks can serve to connect the switching element.
  • the switching contacts which are electrically connected to each other by the contact element, are arranged directly on the support plate.
  • a movable actuating element is provided on or in the housing, whereby a movement and / or deformation of the contact element is effected, whereby the electrical signal or an electrical state is reached. Since the switching contacts are arranged directly on the support plate, on which the contact element acts electrically conductive, a particularly space-saving design of the switching element is possible.
  • the movement and / or deformation of the contact element provides a tactile feedback to the operator. Since the housing is not only arranged around the contact element and the switch contacts, but also at least partially around the support plate, the switching element is protected against environmental influences. Furthermore, the entire switching element can be integrated with its housing in another unit.
  • the switching contacts can protrude punctiform from a surface of the support plate.
  • the switching contacts can protrude like a cap from the carrier plate.
  • the switch contacts can be soldered to a solder pad at the end of a conductor on the support surface, welded or otherwise arranged.
  • the switch contacts themselves can be gold plated so that their surface hardly corrodes.
  • at least the mating surfaces of the contact element, which interact with the switching contacts be gold plated.
  • At least one switching contact is firmly connected to the contact element via one or more predetermined holding regions in an electrically conductive manner. In a rest position of the contact element, a further switching contact is not connected to the contact element. Now, if the contact element is brought into its switching position, the contact element is additional electrically connected to the other switching contact. Thus, then a current between the switch contacts flow through the contact element.
  • the contact element is expediently positively, positively and / or cohesively arranged electrically conductive on the support plate.
  • the contact element is arranged on the actuating element in a positive, force and / or material fit. Upon actuation of the switching element, the contact element is then lowered onto the carrier plate, in particular onto the switching contacts, whereby the electrical connection between the switching contacts is produced. In this embodiment, it is expedient that no switching contact is permanently connected to the contact element, which is arranged on the actuating element.
  • a spring is provided, through which the contact element is pushed away from the switching contacts. Conveniently, this may be arranged between the spring plate and the contact element, the spring. For holding the spring additional guide pieces may be present.
  • the contact element is designed as a snap disc or bridge, wherein the snap disc, in particular a dome-shaped region which is deformable upon actuation of the switching element. Due to the deformation of the snap-action disk, the electrical connection between the switch contacts is made via the dome-shaped region.
  • the contact element reversibly deformable material when a deformation of the contact element takes place upon actuation of the switching element. Due to the thus existing mechanical stresses, the contact element can automatically change from the switching position to the rest position. Consequently, can be dispensed with in such a designed contact element on an additional spring for the switching change.
  • the contact element itself is designed as a spring element to independently from the switching position in the To arrive at rest. Of course, optionally, an additional spring may be provided for the switching change.
  • the entire contact element does not have to consist of a continuous electrically conductive material, at least one electrically conductive region is to be provided which establishes an electrical connection between the switching contacts.
  • the entire contact element consists of a deformable plastic material, on which an electrically conductive metal foil is partially vapor-deposited or welded. This metal foil is then used to make the electrical connection between the two switch contacts.
  • the entire contact element may consist of an electrically conductive material.
  • the contact element may have an electrically conductive bulge which cooperates with the switching contacts on the carrier plate in the switching position.
  • At least one recess can be provided in the support plate, in which the bulge of the contact element can protrude, if this lingers in the switching position. Due to the electrically conductive bulge on the contact element, it is possible to arrange the switching contacts in the immediate vicinity of each other on the support plate. Thus, the width of the switching element according to the invention can be reduced.
  • counter guide means are provided on the support plate, which cooperate with guide means in the housing.
  • These counter-guide means in the carrier plate may consist of circular, oval, triangular, square or other openings.
  • the guide means preferably have a uniform cross-sectional area to the counter guide means.
  • two counter guide means are arranged with different cross-sectional areas in the support plate, which cooperate with corresponding guide means, that is, with comparable cross-sectional areas to the counter-guide means.
  • the support plate is fixed in place by the pin-like guide means which are additionally provided at its end with locking washers or securing splines or screws in the housing.
  • the guide means consist of plastic pins, whereby the support plate can be positioned by a peripheral deformation of the plastic pin stationary in the housing.
  • a triangular projection is provided as a guide means on the housing, which cooperates with a corresponding recess in the corner region of the support plate as a counter guide means.
  • a securing element can additionally be used, wherein the support plate between a stop element and the securing element in the housing can be fixed.
  • This securing element may have a similar base surface as the support plate, wherein edge-bent points are provided with which the locking element digs on the inside of the housing.
  • the support plate is positively and / or non-positively held in the housing.
  • the housing can be sealed on the back by a potting compound. This potting compound can close the housing with the pre-installed carrier plate and the securing element media-tight.
  • the support plate is held between the stop element and an undercut in the housing.
  • the additional securing element since one or more projections in the housing allow a direct positive and / or non-positive attachment of the support plate in the housing.
  • the support plate is thus fixed by a clip connection in the housing.
  • a potting compound can be additionally used to seal the switching element.
  • the actuating element must be movably arranged in the housing.
  • the actuating element can be secured in the housing, for example via a sealed and closed guide. Consequently, the actuator is a separate component to the housing.
  • the actuating element in one piece with the housing, in which the actuating element, in particular by means of a flexible membrane, is held on the housing.
  • This membrane then allows a relative movement of the actuating element to the rest of the housing.
  • the housing is made in one piece with the actuating element by a three-component plastic injection molding.
  • the actual cup-shaped housing has a dimensionally stable plastic, on which a membrane is molded from an elastic plastic.
  • the dimensionally stable actuating element is arranged on the elastic membrane, so that the actuating element is movably provided on the housing.
  • the switching element can be configured absolutely media-tight.
  • the actuating element has a plunger, which is arranged within the housing and acts on the contact element upon actuation of the switching element.
  • This plunger may be configured in one piece with the actuating element.
  • the plunger can be movably arranged on the actuating element, in order thus to improve the switching characteristic, in particular the tactile behavior of the switching element. It is conceivable that the plunger is spring-loaded on the actuating element.
  • the tappet foot can be designed like a dish.
  • the contact element may additionally be provided at least one spacer element, whereby a minimum distance between the actuating element and the carrier plate can be predetermined.
  • This spacer is expediently between the actuating element and the carrier plate to arrange.
  • the actuator can be pressed only up to a predetermined distance on the contact element.
  • a volume reducing piece can also be arranged inside the housing in order to reduce the interior volume of the self-contained switching element. In this way, the effect of pressure differences between the interior pressure and the external pressure can be reduced, thus precluding a malfunction of the switching element by these pressure differences.
  • holding and / or guide elements may be provided on the outside of the housing, with which the housing in an additional unit, in particular a door handle or the like, can be integrated.
  • the holding and / or guide elements may consist of webs, projections, contact surfaces, undercuts or the like.
  • the present invention is directed to an actuator according to claim 17 for a safety and / or locking system, in particular for a door handle in vehicles, with an integrated circuit element according to one of claims 1 to 16.
  • the switching element used can be arranged as an actuation and / or touch sensor on the inside or outside of the door handle.
  • the door handle may have further electrical or electromechanical components.
  • FIG. 1 a shows a cross section through a switching element according to the invention with a snap-action disk which is arranged stationarily on a carrier plate
  • FIG. 1 b a schematic representation of a further contact element which is arranged stationarily on an actuating element
  • FIG. 1 c shows a schematic representation of another contact element which is connected in a stationary manner at two points to the actuating element
  • FIG. 2a shows a cross section through another embodiment of the switching element, wherein the contact element is arranged stationary on the support plate and the actuating element is configured in one piece to the plunger,
  • FIG. 2b shows a cross section through an additional switching element, in which the carrier plate is arranged by an undercut positive and / or non-positively in the housing,
  • FIG. 3 shows a three-dimensional representation of an exemplary switching element
  • Figure 5 is a plan view of a carrier plate arranged close to each other
  • Figure 6 is a plan view of another support plate with a triangular
  • Switching element and a point-shaped, centrally arranged switching contact.
  • FIG. 1 a shows a switching element 1 according to the invention with a contact element 7, which is arranged stationarily on a carrier plate 9.
  • This contact element 7 is designed as a snap-action disc 7a, which at its holding portions 7b form, force and / or materially secured to the support plate 9 is.
  • an electrically conductive connection (for example, by means of a solder connection) can exist between the snap disk 7a and the carrier plate 9.
  • the actuating element 3 In order now to generate an electrical signal or a change in the switching state of the switching element 1, the actuating element 3 must be depressed in the direction of the arrow 26.
  • the actuator 3 is movable relative to the housing 2, this is mounted on a flexible membrane 5 in the housing 2.
  • the plunger 3b presses with its plate-like plunger foot 3d on the snap disk 7a.
  • the snap disc 7a is deformed such that its dome-shaped portion 7c is pressed in the direction of the support plate 9, so that an electrical connection between the switch contacts 8 and the electrically conductive recess 7d, which is arranged centrally in the dome-shaped portion 7c, is produced. Since the two switching contacts 8 are connected to conductor tracks 10 in or on the support plate 9, thus, this electrical signal can be forwarded to the terminal contacts 12.
  • an electrical line 16 may be connected, which has a plug at the other end.
  • the electrical line 16 itself may consist of a multi-core cable.
  • At least one spacer element 4 is provided between the actuating element 3 and the carrier plate 9.
  • a total of two C-shaped spacer elements 4 are arranged on the rear side on the actuating element 3. In the figure 4, these two spacers 4 are clearly visible.
  • the plunger 3b which acts on the contact element 7 upon actuation of the actuating element 3, held spring-loaded in the actuating element 3.
  • the plunger 3b on a mushroom-shaped plunger head 3c, which is received positively within the guide 3a in the actuating element 3.
  • the spring 3e is provided between the plunger 3b, in particular the plunger foot 3d, and the rear side of the actuating element 3.
  • a certain force which is predetermined by the spring 3e
  • another spring for example, between the Support plate 9 and the actuating element 3, be provided to convert this from the switching position to the rest position.
  • the switching element 1 of Figure 1 a is a button that provides only a signal when the actuator 3 is depressed. If a locking mechanism is provided in the housing 2, the switching element 1 can also be designed as a grid or switch.
  • the already mentioned spacer element 4 can optionally also be arranged between the actuating element 3 and a projection in the housing 2 in order to maintain a minimum distance 25 between the plate-like tappet foot 3d and the carrier plate 9.
  • the switching element 1 is closed media-tight, the housing 2 can be closed on the back with a potting compound 21.
  • the support plate 9 must be mounted stationary in the housing 2.
  • the housing 2 has a large-area stop element 6, which consists of a shoulder, on which the carrier plate 9 comes to rest in the housing 2.
  • pin-like guide means 14 are provided on the housing 2, which may have different cross-sectional areas in order to prevent incorrect mounting of the support plate 9.
  • the guide means 14 cooperate with counter guide means 15 in the support plate 9.
  • the counter guide means 15 consist of apertures which have uniform cross-sectional areas to their corresponding guide means 14.
  • the independent switching change of the switching element 1 from its switching position to the rest position is effected on the one hand by the flexible diaphragm 5 for the actuating element 3 and on the other hand by the deformed in the switching position contact element. 7
  • FIGS. 1 b and 1 c a further basic embodiment of the switching element 1 according to the invention is shown schematically.
  • the contact element 7 is not stationary (as in Fig. 1 a) arranged on the support plate 9, but on the actuating element 3, in particular the plunger 3b.
  • a bridge 7b is used as the contact element 7.
  • the spring 24 may optionally be provided between the support plate 9 and the contact element 7 and the plunger 3b.
  • the plunger 3b - as shown in Figure 1 a -, be arranged in the guide 3a of the actuating element 3.
  • the plunger 3b is also pressed onto the carrier plate 9 in the direction of the arrow 26 with the contact elements 7 or the bridge 7b fixedly arranged thereon.
  • a guide piece for securely receiving the spring 24 can be provided on the carrier plate 9 and on the plunger 3b. At the same time, these two guide pieces can also serve as spacers 4.
  • FIG. 1 c a further variant of the switching element 1 according to the invention is shown.
  • an M-shaped conductive bridge 7b is used as the contact element 7, which can be positively and / or non-positively connected to the plunger 3b at two points.
  • This plunger 3b can in turn be arranged in the guide 3a of the actuating element 3.
  • the plunger 3b - just as in the embodiment of FIG. 1 b - directly to the actuator. 3 be provided.
  • the two switching contacts 8 are arranged close to each other on the support plate 9, wherein they are separated from each other for example by a recess 1 1 in the surface of the support plate 9.
  • This recess 1 1 serves to receive the tip of the electrically conductive recess 7d in the switching position.
  • the entire contact element 7 need not be made electrically conductive, but it is sufficient if only the bulge 7d is electrically conductive.
  • FIG. 2 a discloses a switching element 1 according to the invention, in which the actuating element 3 and the plunger 3 b are configured in one piece. Also, this actuating element 3 is movably mounted on the housing 2 via a diaphragm 5. At a pressure on the actuating element 3, this moves in the direction of the arrow 26, whereby at the same time the fixedly arranged on the support plate 9 contact element 7 is deformed so that it establishes an electrical contact with the centered switching contact 8 with its dome-shaped portion 7c.
  • the switching element 1 also display elements 13, in particular LED's be arranged, for example, the generation of the electrical signal can display during the actuation of the switching element 1 optically.
  • display elements 13 in particular LED's be arranged, for example, the generation of the electrical signal can display during the actuation of the switching element 1 optically.
  • transparent sections are provided in the housing 2, the membrane 5 and / or the actuating element 3. These translucent sections may consist of a transparent plastic. It should be mentioned at this point that, of course, also further electrical and / or electronic components can be provided in the switching device 1.
  • the carrier plate 9 is not secured by an additional securing element 17 but by the triangular projection 19 with the subsequent undercut 18 in the housing 2.
  • the support plate 9 goes with the projection 19 a so-called clip connection.
  • an additional seal 20 may be provided in the region of the projection 19 and the undercut 18.
  • This seal 20 may for example have a circular cross-section.
  • the seal 20 may have a U-shaped cross-section, wherein the support plate 9 engages in the open side of the U 's .
  • the entire support plate 9 would be surrounded at the edge by the seal 20 with the U-shaped cross-section.
  • the actuating element 3 can optionally also be arranged (that is, not above the membrane 5) via a closed guide in the housing 2.
  • the actuating element 3 and the plunger 3b can be designed in one piece or in several parts to each other.
  • FIG. 3 shows a three-dimensional view of the switching element 1 according to the invention.
  • This switching element 1 can be arranged for example in an outside door handle of a vehicle to control a security and / or locking system.
  • 2 holding / guiding elements 22 are provided on the housing to integrate the switching element 1 in a further structural unit, such as a door handle.
  • the electrical connection of the switching element 1 can be made via the electrical line 16.
  • the support plate 9 is designed such that it protrudes with its conductor tracks 10 from the housing 2 and at the same time serves as a support plate 9 for further electrical or electronic components.
  • a volume reduction element 23 is provided in the housing 2, which may be arranged positively and / or non-positively in the housing 2. It is also conceivable that this is molded or welded to the housing 2.
  • a longitudinally ausgestalteter web may be provided as a holding / guiding element 22 in order to avoid a false installation of the switching element 1 in the additional unit.
  • FIG. 5 only a plan view of a support plate 9 without the housing 2 and the actuator 3 is shown.
  • a snap disk 7a is used, which is arranged stationarily on the carrier plate 9.
  • the snap disc 7a is shown only by dashed lines.
  • This snap disk 7a is held on the carrier plate 9 via its holding regions 7e.
  • an electrical connection of the snap disk 7a to the conductor tracks 10 may exist.
  • two switching contacts 8 are arranged centrally under the bulge 7d of the snap-action disc 7a. Upon actuation of the switching element 1, this electrically conductive recess 7d is now pressed onto the switching contacts 8.
  • a triangular snap disk 7a is used. This is electrically conductively connected to the carrier plate 9 with its holding region 7e. Upon actuation of the switching element 1, an electrical connection between the arranged centrally under the contact element 7 arranged switching contact 8 and provided on the holding portion 7 e switching contacts 8. Thus, the holding portions 7e of the snap disc 7a are always connected in an electrically conductive manner to the outward-standing switching contacts 8.

Landscapes

  • Push-Button Switches (AREA)

Abstract

Élément (1) de commutation pour générer un signal électrique ou un état de commutation en vue de verrouiller, de déverrouiller, d'ouvrir et/ou de fermer un système de sécurité et/ou de fermeture, notamment sur un véhicule, comprenant au moins un élément (7) de contact, une liaison électrique entre au moins deux contacts (8) de commutation électriques présents pouvant être établie en actionnant l'élément (1) de commutation, et une plaque (9) support qui présente des contacts (12) de raccordement électriques pour l'élément (1) de commutation, ainsi qu'un boîtier (2) qui entoure l'élément (7) de contact et au moins partiellement la plaque (9) support en les protégeant contre les influences de l'environnement, la plaque (9) support étant montée en position fixe dans le boîtier (2). Les contacts (8) de commutation sont montés directement sur la plaque (9) support et un élément (3) d'actionnement mobile est prévu sur le boîtier (2), lequel, en actionnant l'élément (1) de commutation, produit un mouvement et/ou une déformation de l'élément (7) de contact.
EP07726394.5A 2006-03-07 2007-02-16 Element de commutation Not-in-force EP1994244B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006010811.6A DE102006010811B4 (de) 2006-03-07 2006-03-07 Schaltelement und Betätigungsvorrichtung damit sowie Türgriff mit dieser Betätigungsvorrichtung
PCT/EP2007/051505 WO2007101775A1 (fr) 2006-03-07 2007-02-16 ÉlÉment de commutation

Publications (2)

Publication Number Publication Date
EP1994244A1 true EP1994244A1 (fr) 2008-11-26
EP1994244B1 EP1994244B1 (fr) 2018-08-29

Family

ID=38017143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07726394.5A Not-in-force EP1994244B1 (fr) 2006-03-07 2007-02-16 Element de commutation

Country Status (3)

Country Link
EP (1) EP1994244B1 (fr)
DE (1) DE102006010811B4 (fr)
WO (1) WO2007101775A1 (fr)

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Also Published As

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DE102006010811B4 (de) 2018-03-01
DE102006010811A1 (de) 2007-09-13
EP1994244B1 (fr) 2018-08-29
WO2007101775A1 (fr) 2007-09-13

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