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WO1991005960A1 - Support de joint spherique - Google Patents

Support de joint spherique Download PDF

Info

Publication number
WO1991005960A1
WO1991005960A1 PCT/SE1990/000671 SE9000671W WO9105960A1 WO 1991005960 A1 WO1991005960 A1 WO 1991005960A1 SE 9000671 W SE9000671 W SE 9000671W WO 9105960 A1 WO9105960 A1 WO 9105960A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball head
ball
ball joint
pressure
joint fixture
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.)
Ceased
Application number
PCT/SE1990/000671
Other languages
English (en)
Inventor
Rolf Andersson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1991005960A1 publication Critical patent/WO1991005960A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/10—Arrangements for locking
    • F16C11/103—Arrangements for locking frictionally clamped
    • F16C11/106—Arrangements for locking frictionally clamped for ball joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
    • F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/021—Locking means for rotational movement
    • F16M2200/022—Locking means for rotational movement by friction

Definitions

  • the present invention concerns a ball joint fixture of the kind comprising a ball head and a friction element arranged, when actuated by a pressurized medium, to exert pressure on the ball head- Ball joint fixtures of the kind mentioned above are al eady known, for instance from the US Patent Specification No.4374497, disclosing a table which is supported by a central pillar and a number of legs positioned at a distance from the pillar and fitted at both ends with fixtures of the kind outlined above.
  • the prior-art fixtures are used solely as a supplementary securing means, the individual legs also being arranged to be fastened in the desired position of extension.
  • the main purpose of the subject invention is to provide a ball joint fixture of the kind indicated which is simple in construction, which offers a high degree of safety also when used to alone carry an object, and which is easy to operate while at the same time it has a long useful life, also when operating in polluted atmospheres.
  • a ball joint fixture which is essentially characterized in that the means for mounting the ball head consists of two annular seat members which are arranged to be forced, from two opposite directions, against each other and against the ball head, and the faces of which positioned opposite the ball head constitute annular seating faces in abutment against said ball head, and in that an attachment member - projects through the central aperture of one of said annular seat members in order to support the object to be secured by said fixture while the friction element extends through the central aperture in the opposite annular seat member.
  • FIG. 1 is an axial cross-sectional view through a ball joint fixture designed in accordance with the invention
  • FIG. 2 illustrates schematically the pressurized medium supply system used to secure the ball joint fixture in position.
  • the ball joint fixture illustrated in the drawing comprises a ball joint 1 which is supported between two annular seat members 2 and 3 which are arranged to be urged from two opposite directions against one another and against the ball head. Tightening bolts 4 keep the annular seat members pressed towards each other. In addition to passing through the annular seat members 2 and 3 the tightening bolts 4 also pass through a base 5 having a centrally located cavity 6 of cylindrical configuration. A piston 7 is inserted in the cavity 6 for vertical movement therein and is fitted with a sealing ring 8 whereby it maintains a sealed sliding fit against the inner circumferential faces of the cavity 6. A friction body 9 is positioned centrally on the upper face of the piston and in accordance with the embodiment illustrated the upper face of the friction body 9 has a curvature matching that of the ball head.
  • the lower annular seat member 3 as well as the upper annular seat member 2 are formed with comparatively large central apertures- since they need not overlie the ball head 1 over any major proportion of the peripheral ball head surface. Owing to this arrangement a comparatively large space is formed in which to accommodate the friction body 9 inside the lower annular seat member but in addition thereto considerable space is created for free movement of the pin 10 which is mounted on top of the ball head, said pin intended to support, on its upper section 10a which in accordance with the embodiment illustrated in the drawing is formed with screw threads, a table, a screw vice or any other suitable mechanism designed to secure the object to be supported by the ball joint fixture.
  • the fixture is attached to a supporting base 11 of some kind, which m be attached to a floor stand or similar means.
  • the supporting base 11 may be adjustable vertically, for instance by means of a lifting devi operated in any suitable manner, such as by means of hydraulic, pneumatic, electronic or mechanical means.
  • Numeral reference 12 designates the pressurized medium supply channel which from the exterior opens into the cylindrical cavity 6.
  • reference numeral 13 designates a source of pressurized medium supplying the ball joint fixture with pressurized medium, preferably compressed air.
  • Referenc numeral 14 designates a pressure regulator, and by 15 is designated a coupling means including a non-return valve 16.
  • Numeral reference 17 designates a reversible through-flow valve and numeral 18 designates the mounting arrangement of the ball joint generally, including the locking piston, only partly shown on the drawings.
  • the pressure regulator 14 has an inlet port 19, an outlet port 20 and its through-flow direction is indicated by arrow 21.
  • the branch coupling 1 has an inlet 22, an inlet port 23 and an outlet port 24 and the non-return valve 16 is positioned in the path of communication between the inlet port 23 and the outlet port 24 in such a manner as to ensure that fluid entering through the inlet port 23 is directed in the direction indicated by arrow 25.
  • the reversible valve 17 has an inlet port 26, an outlet port 27 and an outlet port 28.
  • the source of pressurized medium 13 is in direct communication with the inlet port 1 of the pressure regulator 14 and with the inlet port 26 of the valve 17. Also, the outlet port 20 of the pressure regulator 14 communicates with the inlet port 22 of the coupling member 15.
  • the outlet port 27 of the valve 17 communicates with the inlet port 23 of the coupling means 15, and the outlet port 24 of the coupl ng means 15 communicates with the inlet channel 12 leading to the cylindrical cavity 6.
  • the mode of operation of the device will be described in the fol1owing.
  • valve 17 is set to normally assume position A but to assume position B when actuated, in order again to resume position A upon cease of actuation.
  • Actuation of valve 17 suitably is effected by means of a spring-back pedal-operated or manually operated regulating means.
  • the two annular seat members 2 and 3 are arranged to be adjusted in a direction towards and away from each other for adjustment of the seat retaining pressure acting on the ball head, for instance to compensate for wear.
  • the invention is not limited to the embodiment which has just been described in the aforegoing for illustrative purposes only but may be varied as to its details within the scope of the appending claims without departure from the basic inventive idea.
  • the friction body on a separate force-exerting means which need not necessarily form a closed unit together with the annular seat members, although the preferred embodiment provides a more enclosed and protected construction.
  • the piston 7 has a diameter which even surpasses the diameter of the ball head 1, resulting in a locking force which is considerable, also when the pressure inside the cavity 6 is low.
  • the lower annular seat member 3 forms the face against which the piston 7 abuts when the frictional body 9 is worn out, but this end-position abutment face obviously could be provided in some other suitable way.
  • the ball joint fixture referred to obviously could be used to support any suitable object or article which need not necessarily be a working table or a work piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

L'invention concerne un support de joint sphérique du genre comprenant une tête sphérique et un élément de friction (9) aménagé de manière à exercer une pression sur ladite tête, lorsqu'il est actionné par un milieu pressurisé. Les moyens de montage dudit joint sphérique comprennent deux organes de logement annulaires (2, 3) qui, venant de sens opposés, sont poussés l'un contre l'autre et contre la tête sphérique. Les surfaces d'organe de logement opposant ledit joint forment des surfaces de logement annulaires butant contre ladite tête sphérique. Un organe de fixation dépasse l'ouverture centrale d'un desdits organes de logement annulaires de manière à supporter l'objet devant être retenu au moyen de ladite fixation, tandis que l'élément de friction s'étend à travers l'ouverture centrale de l'organe de logement annulaire opposé.
PCT/SE1990/000671 1989-10-20 1990-10-18 Support de joint spherique Ceased WO1991005960A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8903466-4 1989-10-20
SE8903466A SE464661B (sv) 1989-10-20 1989-10-20 Kulledsfixtur

Publications (1)

Publication Number Publication Date
WO1991005960A1 true WO1991005960A1 (fr) 1991-05-02

Family

ID=20377218

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000671 Ceased WO1991005960A1 (fr) 1989-10-20 1990-10-18 Support de joint spherique

Country Status (3)

Country Link
AU (1) AU6619390A (fr)
SE (1) SE464661B (fr)
WO (1) WO1991005960A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001075318A1 (fr) * 2000-04-03 2001-10-11 Wafermasters, Inc. Articulation avec dispositif de verrouillage pour bras orientable
US6379073B1 (en) 2000-04-03 2002-04-30 Wafermasters Incorporated Adjustable joint for a positionable arm
EP2338435A1 (fr) * 2009-12-23 2011-06-29 Karl Storz GmbH & Co. KG Dispositif de retenue pour instruments médicaux
CN105570631A (zh) * 2016-03-09 2016-05-11 中国船舶重工集团公司第七一〇研究所 一种无动力自调整式防倾倒平台
CN116423459A (zh) * 2023-04-26 2023-07-14 浙江恒通阀门有限公司 一种三通球阀球体加工用夹具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US729520A (en) * 1902-05-12 1903-05-26 Frank A Robbins Tripod-head for photographic instruments.
US3409317A (en) * 1963-08-27 1968-11-05 Richards Arthur James Ball and socket joint
US3737130A (en) * 1970-06-25 1973-06-05 Slick Tripod Co Ltd Hydraulically operated tripod head
DE3301543A1 (de) * 1983-01-19 1984-07-19 Carl Schenck Ag, 6100 Darmstadt Spielfreies kugelgelenk, insbesondere fuer pruefeinrichtungen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US729520A (en) * 1902-05-12 1903-05-26 Frank A Robbins Tripod-head for photographic instruments.
US3409317A (en) * 1963-08-27 1968-11-05 Richards Arthur James Ball and socket joint
US3737130A (en) * 1970-06-25 1973-06-05 Slick Tripod Co Ltd Hydraulically operated tripod head
DE3301543A1 (de) * 1983-01-19 1984-07-19 Carl Schenck Ag, 6100 Darmstadt Spielfreies kugelgelenk, insbesondere fuer pruefeinrichtungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. G45 50 B/30; & SU,A,627 257, Publ. week 7930, (EPISHIN V K). *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001075318A1 (fr) * 2000-04-03 2001-10-11 Wafermasters, Inc. Articulation avec dispositif de verrouillage pour bras orientable
US6379073B1 (en) 2000-04-03 2002-04-30 Wafermasters Incorporated Adjustable joint for a positionable arm
EP2338435A1 (fr) * 2009-12-23 2011-06-29 Karl Storz GmbH & Co. KG Dispositif de retenue pour instruments médicaux
US8511625B2 (en) 2009-12-23 2013-08-20 Karl Storz Gmbh & Co. Kg Holding device for medical instruments
CN105570631A (zh) * 2016-03-09 2016-05-11 中国船舶重工集团公司第七一〇研究所 一种无动力自调整式防倾倒平台
CN116423459A (zh) * 2023-04-26 2023-07-14 浙江恒通阀门有限公司 一种三通球阀球体加工用夹具

Also Published As

Publication number Publication date
SE8903466D0 (sv) 1989-10-20
AU6619390A (en) 1991-05-16
SE464661B (sv) 1991-05-27

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