EP0377819B1 - Verbindung für zwei Bauteile - Google Patents

Verbindung für zwei Bauteile Download PDF

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Publication number
EP0377819B1
EP0377819B1 EP89122121A EP89122121A EP0377819B1 EP 0377819 B1 EP0377819 B1 EP 0377819B1 EP 89122121 A EP89122121 A EP 89122121A EP 89122121 A EP89122121 A EP 89122121A EP 0377819 B1 EP0377819 B1 EP 0377819B1
Authority
EP
European Patent Office
Prior art keywords
connection
core
notches
pressure pipe
another
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
EP89122121A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0377819A3 (de
EP0377819A2 (de
Inventor
Eckard Schuttenberg
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0377819A2 publication Critical patent/EP0377819A2/de
Publication of EP0377819A3 publication Critical patent/EP0377819A3/de
Application granted granted Critical
Publication of EP0377819B1 publication Critical patent/EP0377819B1/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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
    • 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
    • H01H3/08—Turn knobs
    • H01H3/10—Means for securing to shaft of driving mechanism
    • H01H2003/105—Means for securing to shaft of driving mechanism with compensation of misalignment in the link between the operating part, the driving mechanism and the switch, e.g. misalignment between two axis

Definitions

  • the invention is based on a connection for two components according to the preamble of the main claim.
  • a flexurally elastic connection is already known in which two parts are elastically connected to one another with the aid of a helical spring.
  • this connection is very complex and can only be used to a limited extent.
  • the displacement transducer core attached to a magnetic armature is moved with a little play in a pressure tube or in a coil, the two parts being connected to one another with a pin.
  • the displacement sensor In order to achieve a central assignment of the core to the tube, the displacement sensor must be aligned. Aligning the core is a very expensive job.
  • a core that is not centered on the pressure pipe causes increased friction and thus increased wear.
  • the output signal of the displacement sensor shows increased hysteresis; if the deviation is very large, the core can even be destroyed.
  • the two housing parts are firmly connected to each other with the help of two connections. These connections represent a positioning and a storage of the two housing parts. The ends of the two connections are firmly clamped in the housing parts. These connections are constantly under pressure and tensile stress. Furthermore, it can also be caused by movements of the two housing parts relative to one another by transverse movements.
  • connection according to the invention with the characterizing features of the main claim has the advantage that it is very simple is to be assembled. Despite the very short overall length of the connection, it has a large flexurally elastic area, so that there is no need to align the core. By increasing the number of cross-sectional constrictions, the elasticity can be increased while the mechanical strength of the connection remains the same.
  • the connection can be carried out using inexpensive plastic spraying technology, and the ferritic core sleeve and the shaft of the magnet armature can be injection molded at the same time. No additional or loose parts are therefore necessary. Additional gluing processes or press connections for fastening are not necessary.
  • FIG. 1 shows a longitudinal section through a flexurally elastic connection
  • FIG. 2 shows a view of a connection rotated by 90 ° with respect to FIG. 1
  • FIG. 3 shows a section in the direction III-III according to FIG. 2
  • FIG. 4 shows a longitudinal section through a second exemplary embodiment
  • FIG View of the second exemplary embodiment rotated by 90 ° with respect to FIG. 4 and FIG. 6 a section in the direction VI-VI according to FIG. 5.
  • 10 denotes a connecting part made of plastic, which has a cylindrical extension 11 with a collar 12 for receiving a ferrite core 13, which is moved in a pressure tube or coil former, not shown. Furthermore, the Connecting part 10 has a flexible shaft 16 and an adjoining, cup-shaped part 17, in which a coupling part 20 designed as a nut is immovably. This is used to hold a magnetic armature or a switching rod, not shown.
  • the shaft 16 is made of plastic and has a flexurally elastic region which has two cross-sectional constrictions 23, 24 formed one behind the other in the axial direction of the shaft 16 and offset by 90 ° in the radial direction.
  • the cross-sectional constrictions 23, 24 are formed as notches made from two diametrically opposite sides, so that, as shown in Figure 3, a centrally loaded cross-section 25 is formed. These cross sections 25 are offset from one another by 90 °.
  • the shaft 16 has a relatively large tensile surface 25 in the axial pulling direction and thus a high mechanical strength in the axial direction.
  • the cross-sectional constrictions of the shaft 16 can be formed as two rows formed next to one another, each with three notches. The notches in each row are 120 ° apart and are 60 ° apart from the notches in the other row.
  • FIGS. 4 to 6 A particularly simple embodiment is shown in FIGS. 4 to 6, in which only one notch 30, 31 is formed on the shaft 16a in each row, offset by 90 ° in the radial direction. This results in an eccentric cross section 32.
  • this design has the disadvantage that the force is introduced eccentrically, which results in an increased risk of kinking.
  • the embodiment has according to Figure 1 a lower notch effect. The larger the radius of the notches, the lower the notch effect to be avoided.
  • the shaft 16 or 16a By designing the shaft 16 or 16a as a plastic injection-molded part, no additional or loose parts are necessary, which have to be pressed into the housing in a complex assembly. A loosening of the connection after assembly can therefore no longer occur.
  • the cylindrical extension 11 of the displacement transducer then consists of a magnetically non-conductive material in the case of the metallic rotating part.
  • the notches 23, 24 can be embossed.

Landscapes

  • Mutual Connection Of Rods And Tubes (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Endoscopes (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
EP89122121A 1989-01-07 1989-11-30 Verbindung für zwei Bauteile Expired - Lifetime EP0377819B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900326 1989-01-07
DE3900326A DE3900326A1 (de) 1989-01-07 1989-01-07 Verbindung fuer zwei bauteile

Publications (3)

Publication Number Publication Date
EP0377819A2 EP0377819A2 (de) 1990-07-18
EP0377819A3 EP0377819A3 (de) 1991-09-18
EP0377819B1 true EP0377819B1 (de) 1995-05-10

Family

ID=6371691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122121A Expired - Lifetime EP0377819B1 (de) 1989-01-07 1989-11-30 Verbindung für zwei Bauteile

Country Status (3)

Country Link
EP (1) EP0377819B1 (cs)
JP (1) JPH085376Y2 (cs)
DE (2) DE3900326A1 (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG125948A1 (en) * 2003-03-31 2006-10-30 Asml Netherlands Bv Supporting structure for use in a lithographic apparatus
GB2432000B (en) * 2005-11-07 2008-10-29 Newall Measurement Syst Ltd Position detector with a flexible mount
BE1019843A3 (nl) * 2011-02-10 2013-01-08 Pdc Brusch Nv Verbeterde steelbevestiging voor een gereedschap.
CN105097312A (zh) * 2015-08-31 2015-11-25 国家电网公司 一种万用联接头以及高压绝缘操作棒
CN109253687B (zh) * 2018-10-09 2020-12-01 三英精控（天津）仪器设备有限公司 一种基于柔性铰链机构的纳米级电容位移传感器测量装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290949A (en) * 1963-12-18 1966-12-13 Gen Precision Inc Flexural pivot
FR1411175A (fr) * 1964-08-05 1965-09-17 Ermat Joint universel
US3405539A (en) * 1966-06-13 1968-10-15 Gen Motors Corp Flexible rotary joint
DE1804253A1 (de) * 1968-10-21 1970-06-25 Wolfram Pahl Zweikoordinaten-Feinzeiger
JPS5415146U (cs) * 1977-07-02 1979-01-31
US4435905A (en) * 1982-03-15 1984-03-13 The United States Of America As Represented By The United States Department Of Energy Telescoping magnetic ball bar test gage
US4473950A (en) * 1983-02-18 1984-10-02 The Indikon Company Crankshaft alignment tool
JPS61124725U (cs) * 1985-01-25 1986-08-06
DE8601780U1 (de) * 1986-01-24 1986-04-17 Bug-Alutechnik GmbH, 7981 Vogt Vorrichtung zur Verbindung zweier Profile

Also Published As

Publication number Publication date
DE3900326A1 (de) 1990-07-12
EP0377819A3 (de) 1991-09-18
JPH085376Y2 (ja) 1996-02-14
EP0377819A2 (de) 1990-07-18
DE58909227D1 (de) 1995-06-14
JPH02109020U (cs) 1990-08-30

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