EP0575918B1 - Haltevorrichtung zur Lagerung eines elektrischen Bauteils - Google Patents

Haltevorrichtung zur Lagerung eines elektrischen Bauteils Download PDF

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Publication number
EP0575918B1
EP0575918B1 EP93109797A EP93109797A EP0575918B1 EP 0575918 B1 EP0575918 B1 EP 0575918B1 EP 93109797 A EP93109797 A EP 93109797A EP 93109797 A EP93109797 A EP 93109797A EP 0575918 B1 EP0575918 B1 EP 0575918B1
Authority
EP
European Patent Office
Prior art keywords
component
slide
slide component
side walls
projections
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
Application number
EP93109797A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0575918A3 (enrdf_load_stackoverflow
EP0575918A2 (de
Inventor
Dieter Braun
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.)
Ruf Electronics GmbH
Original Assignee
Ruf Electronics GmbH
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 Ruf Electronics GmbH filed Critical Ruf Electronics GmbH
Publication of EP0575918A2 publication Critical patent/EP0575918A2/de
Publication of EP0575918A3 publication Critical patent/EP0575918A3/xx
Application granted granted Critical
Publication of EP0575918B1 publication Critical patent/EP0575918B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H19/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/01—Mounting; Supporting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/14—Adjustable resistors adjustable by auxiliary driving means

Definitions

  • the invention relates to a holding device for mounting an electrical component which can be actuated by a rotatable shaft on an object, the electrical component being displaceably guided relative to the object in a first displacement direction and in a second displacement direction which is perpendicular thereto, the two displacement directions being moved around Are offset by 90 ° to the shaft.
  • Such a holding device is known from EP 0 070 934 A1.
  • a potentiometer with a rotatable shaft is slidably attached to a holding plate, the shaft reaching through an opening of the potentiometer, which has a sufficiently large play for the desired displaceability.
  • An annular flange component is rigidly attached to the potentiometer.
  • At the holding plate is fastened to a disk-shaped part which has a projecting pin which runs parallel to the shaft and is guided in an opening in the flange component.
  • a stepped, ring-shaped part engages over the potentiometer in the manner of a union nut and clamps the disk-shaped part with the pin against the holding plate. This stepped annular part is screwed onto the holding plate.
  • US 1,459,035 shows a flexible coupling with which two shaft ends to be coupled can be connected to one another.
  • the coupling has a housing with a square recess, the side walls of which form guideways for slide components.
  • Two parallel slide bearing surfaces are provided on each of the shaft ends to be coupled, which can slide along the longitudinally assigned guide tracks of the housing.
  • the corresponding bearing surfaces of the two shaft parts to be coupled are perpendicular to one another. This means that each of the two shaft ends to be coupled can be shifted in one direction, so that, as a result, with coupled shafts a center offset in two directions perpendicular to one another and perpendicular to the longitudinal axis of the shafts is possible.
  • the housing of an electrical component is attached to an object, which then also defines the position of the shaft actuating this component.
  • a potentiometer is used as a rotary position sensor for the throttle valve of an internal combustion engine, the rotary shaft of the potentiometer is coupled to the axis of rotation of the throttle valve via a linkage and the potentiometer housing is attached to the engine block, the described negative effects can occur due to vibrations, installation tolerances or thermal expansion. Similar problems occur when adjusting brake linings in vehicles, where the wear of the brake linings is detected by the position of a linkage by a potentiometer. The same applies accordingly to rotary switches that are used to query limit positions or to other electrical components that are actuated by a rotatable shaft.
  • the object of the invention is therefore to provide a holding device for storage of electrical components of the type mentioned, which is able to compensate even larger dimensional tolerances.
  • the basic idea of the invention is therefore to mount the potentiometer housing in a cross slide guide.
  • the two displacement directions are offset by 90 °.
  • the displacement directions are each radial to the axis of rotation of the potentiometer.
  • the second slide component has a substantially rectangular recess, two opposite side walls of this recess forming a first guide track for receiving the first slide component, which creates a structurally simple, easy to manufacture and easy to assemble holding device.
  • a metallic leaf spring is embedded in one of the side walls of the first and / or the second slide component, which has two spring-elastic arms projecting over the base body of the respective slide component, at the end of which dome-like projections are fastened.
  • the long-term behavior of the holding device is considerably improved by these metallic leaf springs, since the spring properties of the spring arms are retained even after extremely long operating times. If the respective slide component is injection molded from plastic, the respective leaf spring can be inserted into the mold before injection molding this component and are firmly connected to the slide component by injection molding.
  • the two slide components each have spring-elastic arms with outwardly projecting projections. These projections slide on the associated guideway, which on the one hand reduces frictional forces and on the other hand prevents the slide components from tilting.
  • the spring-elastic arms additionally compensate for tolerance errors, which is particularly important if the guideway on the object on which the potentiometer is to be mounted is not precisely manufactured or contaminated. Limiting stops are preferably provided in both displacement directions, so that the potentiometer is positioned substantially immediately at the correct position during assembly.
  • the first slide component is attached in one piece to the housing of the potentiometer, and thus the potentiometer housing can be manufactured together with the first slide component in one operation, for example as an injection molded part.
  • the second slide component has an outwardly projecting bead on the side walls forming the second guideway. This increases the mechanical strength of the holding device.
  • the first slide component has an annular base body on which the two side walls are formed tangentially, this annular base body simultaneously serving as a bearing for rotatable parts of the potentiometer. This simplifies the design effort for the housing and the first slide component, saves material and at the same time increases the mechanical strength of the first slide component.
  • both slide components are preferably made of plastic.
  • the holding device essentially consists of a first slide component 1, which is displaceable relative to a second slide component 2.
  • the second slide component 2, together with the first slide component 1, can be displaced along a guideway 4 relative to an object 3.
  • item 3 is an adjusting device for adjusting the brake linings of a motor vehicle. Further details of this object 3 are not important for the invention, which is why its individual parts are also not described in detail. The only important thing is that this object 3 has a guideway (guide spell 4) in which the second slide component 2 is guided.
  • the first slide component 1 can be moved in a straight line in a first direction of displacement 5; the second slide component 2 can be displaced in a straight line in a second displacement direction 6.
  • the two displacement directions 5 and 6 are perpendicular to one another, that is to say they are rotated 90 ° relative to one another.
  • the electrical component (not shown) is fastened to the first slide component 1, the first slide component 1 preferably being integrated with the housing of the electrical component and projecting therefrom.
  • the axis of rotation of the electrical component is perpendicular to the two displacement directions 5 and 6, so that the two displacement directions 5 and 6 each run radially to the axis of rotation of the component.
  • the first slide component 1 has two mutually parallel side walls 11 and 12, at the ends of which a spring-elastic arm 13, 14; 15, 16 is attached with projections projecting outwards.
  • the elasticity can be increased in that the arms 13-16 are separated from the housing by incisions or axial recesses.
  • these two rectilinear side walls 11 and 12 are integrally formed on an annular base body 17 of the first slide component 1, this annular base body 17 being at the same time part of the housing of the electrical component and used for mounting the rotatable parts of the component, for example with a potentiometer for storing the wiper spring support of the potentiometer.
  • the second slide component 2 consists essentially of a rectangular frame which has a substantially rectangular central recess 20.
  • Two side walls 21 and 22 which run parallel to one another and parallel to the direction of displacement 6 likewise have resilient ends at the ends Arms 23, 24, 25 and 26 with outwardly projecting projections.
  • Two further side walls 27 and 28 running parallel to one another and parallel to the direction of displacement 5 form with their inside the guideway for the first slide component 1.
  • the projections on the arms 13, 14, 15 and 16 lie against the inside wall of the side walls 27 and 28.
  • the side walls 27 and 28 have outwardly projecting beads 29 and 30, so that only the sections lying between the beads and the side walls 21 and 22 serve as a guideway.
  • the side walls 21 and 22 also serve as a limit stop for the displacement of the first slide component 1.
  • the side walls 21 and 22 of the second slide component also have spring-elastic arms 23, 24, 25 and 26 at the end, which likewise have outwardly projecting projections which slide along the guide track 4.
  • the guide track 4 is delimited by steps 31 acting as a limit stop, so that the second slide component can only be moved within these limits. This also makes it clear that the guideway 4 does not have to be continuous but can only consist of four sections, the length of which corresponds to the maximum displacement of the second slide component.
  • FIG. 2 differs from that of FIG. 1 essentially in that the second slide component 2 has on one of its side walls 21, which is in contact with the guideway 4, a metallic leaf spring 32, which thereby in the side wall 21 is firmly anchored that it is overmolded with the plastic, ie a central portion 35 of the leaf spring 32 is anchored in the side wall 21 of the second slide component 2.
  • Metallic spring arms then extend over the rectangular contour on both sides of this section 35 of the second slide component. These spring arms are provided at their ends with dome-shaped projections 33 and 34, which bear against the associated guideway 4 and serve as sliding bodies.
  • both slide components 1 and 2 are equipped with metallic leaf springs similar to the exemplary embodiment in FIG. 3.
  • the embodiment of FIG. 3 differs from that of FIG. 2 in that the first slide component 1 also has a metallic leaf spring 36 on one of its side walls 11 instead of the resilient arms 13 and 14 of FIG. 1, which has a central section 39 is anchored in the plastic of the first slide component 1 and protrudes from there with two spring arms, at the end of which dome-shaped projections 37 and 38 are attached. These two dome-like projections 37 and 38 slide against the guide track 27.
  • the leaf spring 36 is inserted into the injection mold in a manner similar to that described above, and the plastic is overmolded in the region of the side wall 11 and the central section 39 and thereby firmly anchored.
  • the second slide component is essentially rectangular in the plan view of FIG. 4 and has four side walls 21, 22, 29 and which are at right angles to one another 30. At the corners between the side wall 22 and the side walls 29 and 30 are parallel to the side wall 22 extending resilient arms 23 and 24 which protrude laterally slightly beyond the level of the side wall 22 and thus with their outwardly facing sides precisely defined sliding surfaces form.
  • the leaf spring On the side opposite the wall 22, the leaf spring is provided, the central portion 35 of which is embedded in the plastic of the side wall 21. As will be explained in more detail in connection with FIGS. 7 and 8, two spring arms protruding from the plastic are connected to this central section by means of offsets, on the ends of which the dome-shaped projections 33 and 34 are attached.
  • the length of the spring arms of the leaf spring 32 is selected so that the ends of the leaf spring and the ends of the opposite plastic spring arms 23 and 24 each project equally far beyond the side walls 29 and 30, respectively.
  • the slide component 2 furthermore has a base 40 which is stretched between the frame-like side walls 21, 22, 29 and 30 and which has a central opening 41.
  • This base 41 serves to hold the first slide component (see FIGS. 1 to 3) and supports it in a plane perpendicular to the axis of the shaft. 4 and 6 that the side walls 29 and 30 protrude outwards in a central section, so that the two sections of the guideway 27 and 28 are each limited in length.
  • the central opening 41 of the bottom 40 serves to save material and weight and prevents warping Slide component when the plastic hardens.
  • the leaf spring 32 is an elongated rectangular strip in plan view (FIG. 8).
  • spring arms 43 and 44 adjoin a middle section 35 via two offsets 41 and 42, the level of which is offset from the plane of the middle section 35.
  • an opening 45 and 46 is provided in each case in order to fasten, for example, rivet, the dome-like projections thereon.
  • the leaf spring has an opening 47 in the middle of the central section 35, which serves to better anchor the leaf spring in the plastic material. When the leaf spring is encapsulated, plastic material penetrates through this opening 47 and forms a bridge between the plastic lying on both sides of the leaf spring, to which the leaf spring is then firmly anchored in its longitudinal direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Transmission Devices (AREA)
EP93109797A 1992-06-26 1993-06-18 Haltevorrichtung zur Lagerung eines elektrischen Bauteils Expired - Lifetime EP0575918B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4221024A DE4221024C2 (de) 1992-06-26 1992-06-26 Haltevorrichtung zur Lagerung eines durch eine drehbare Welle betätigbaren elektrischen Bauteils an einem Gegenstand
DE4221024 1992-06-26

Publications (3)

Publication Number Publication Date
EP0575918A2 EP0575918A2 (de) 1993-12-29
EP0575918A3 EP0575918A3 (enrdf_load_stackoverflow) 1994-08-03
EP0575918B1 true EP0575918B1 (de) 1997-09-10

Family

ID=6461907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109797A Expired - Lifetime EP0575918B1 (de) 1992-06-26 1993-06-18 Haltevorrichtung zur Lagerung eines elektrischen Bauteils

Country Status (3)

Country Link
US (1) US5354019A (enrdf_load_stackoverflow)
EP (1) EP0575918B1 (enrdf_load_stackoverflow)
DE (2) DE4221024C2 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435134B (zh) * 2011-09-20 2013-07-24 北京航天自动控制研究所 一种可调式电位计支架

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459035A (en) * 1921-06-08 1923-06-19 Raisig Charles Flexible coupling
US1573197A (en) * 1924-04-07 1926-02-16 Robert W Schuette Flexible coupling
NL7213713A (enrdf_load_stackoverflow) * 1972-10-11 1974-04-16
US4066838A (en) * 1976-04-30 1978-01-03 Izumi Denki Corporation Apparatus for detachably mounting electrical assembly units to supporting panels
US4177498A (en) * 1978-03-10 1979-12-04 Instrument Systems Corporation Control panel for vehicle entertainment service systems
US4403271A (en) * 1980-07-28 1983-09-06 International Business Machines Corporation Apparatus for mounting and packaging data processing devices
DE3042515C2 (de) * 1980-11-11 1984-01-05 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Elekrisches Drehstellerelement
EP0070934B1 (en) * 1981-07-28 1986-04-16 Crystalate Electronics Limited Variable electrical resistance device
US4679728A (en) * 1982-08-31 1987-07-14 Potterton International Limited Electrical control unit
DE3524308A1 (de) * 1985-07-06 1987-01-15 Ruf Kg Wilhelm Dreh - potentiometer
DE3624640A1 (de) * 1986-07-22 1988-01-28 Ruf Kg Wilhelm Drehpotentiometer, insbesondere zur verwendung als drehstellungsmessfuehler fuer die drehstellung einer welle
DE3714348A1 (de) * 1987-04-29 1988-11-17 Ruf Kg Wilhelm Potentiometer
JPH01110010A (ja) * 1987-10-23 1989-04-26 Matsushita Electric Works Ltd 配線器具用プレート枠
US4964018A (en) * 1989-10-05 1990-10-16 Tektronix, Inc. Multi-purpose display module system for an electronic instrument
US5162976A (en) * 1991-06-27 1992-11-10 Compaq Computer Corporation Double housing wall security locking apparatus for a computer
JPH05157120A (ja) * 1991-12-04 1993-06-22 Kayseven Co Ltd 軸継手
JP2537305Y2 (ja) * 1992-08-21 1997-05-28 株式会社ケイセブン 軸継手

Also Published As

Publication number Publication date
EP0575918A3 (enrdf_load_stackoverflow) 1994-08-03
DE4221024A1 (de) 1994-01-05
DE4221024C2 (de) 1995-11-30
EP0575918A2 (de) 1993-12-29
DE59307306D1 (de) 1997-10-16
US5354019A (en) 1994-10-11

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