EP0962849A2 - Dispositif anti-retour pour le levier d'un appareil de commande à distance - Google Patents

Dispositif anti-retour pour le levier d'un appareil de commande à distance Download PDF

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Publication number
EP0962849A2
EP0962849A2 EP99200545A EP99200545A EP0962849A2 EP 0962849 A2 EP0962849 A2 EP 0962849A2 EP 99200545 A EP99200545 A EP 99200545A EP 99200545 A EP99200545 A EP 99200545A EP 0962849 A2 EP0962849 A2 EP 0962849A2
Authority
EP
European Patent Office
Prior art keywords
lever
box
central position
knob
pin
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.)
Withdrawn
Application number
EP99200545A
Other languages
German (de)
English (en)
Other versions
EP0962849A3 (fr
Inventor
Yenal Alkan
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.)
Mondial Trade Agency Ltd
Original Assignee
Mondial Trade Agency Ltd
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 Mondial Trade Agency Ltd filed Critical Mondial Trade Agency Ltd
Publication of EP0962849A2 publication Critical patent/EP0962849A2/fr
Publication of EP0962849A3 publication Critical patent/EP0962849A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • G05G5/08—Interlocking of members, e.g. locking member in a particular position before or during the movement of another member
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/02—Means preventing undesired movements of a controlling member which can be moved in two or more separate steps or ways, e.g. restricting to a stepwise movement or to a particular sequence of movements

Definitions

  • the present invention refers to an anti-reverse device for the lever in a remote control apparatus.
  • lever devices for operating two rigid tension bars or alternatively a single flexible or non flexible cable, and these devices are commonly known as "push-pull".
  • the devices are placed in a box, where on one side, a control lever extends outwards and from, the other side, a remote transmission cable extends. Naturally, a transmission cable reaction sheath is joined to the box.
  • the remote control device box has a knob or a similar element that interacts between the lever and the box so as to cause a required reciprocal positioning which is more or less firm, avoiding possible reverse motions.
  • This positioning is necessary since it must be certain that the control position is not changed in the case Of vibrations or, on the other hand, that it can be changed when necessary and required by the user.
  • knobs have been made which are connected to the box, and which work by rotation in order to move locking elements which can be freely unlocked between an area of the lever and an area off the box.
  • a purpose of the present invention is therefore to realise an anti-reverse device for the lever in a remote control apparatus that will avoid these technical problems relative to the unstable and firm positioning shown by the known devices.
  • Another purpose is to realise an anti-reverse device for the lever in a remote control apparatus that allows, in any case, a safe positioning, and suitable to stand external stresses even when accidental, like in the case of vibrations.
  • an anti-reverse device for the lever in a remote control apparatus placed in a box by means of trailing cable, which can be connected to an outer structure of a driving machine, wherein said box has a first opening for the passage of an operating lever for a single cable core movable within a reaction sheath, connected to said box, said lever being able to oscillate around a pivot, and locking means of the lever position which can be easily unlocked are provided outside said box, characterised in that said locking means comprise an external knob, to which an elastically flexible ball is joined and said bail is snap inserted into cavities provided on said box, and a shaped plate, placed at the end of a rotation shaft of said knob, selectively interactive with a pin projecting from said lever.
  • a box 11a, 11b is shown in which a remote control apparatus driven by means of a single trailing cable is placed.
  • box-shaped element or box realised for example in two coupled pieces 11a and 11b, which can be connected to a driving machine outer structure.
  • box 11a, 11b there is a first opening 12 wherefrom an operating lever 13 extends for a single cable core, which is shown as a curved end in the shape of a hook 14 and, as known, which is movable within a reaction sheath (not shown) connected to the box.
  • the operating lever 13 can oscillate around a pivot 16, which ends can be placed in two opposite seats 15, which have bushings or similar supports 17, provided inside the two opposite halves of the box 11, 11b.
  • the lever 13, in particular, can oscillate around the pivot 16 between a central position and two positions placed on opposite sides with respects to said central position.
  • the lever 13 has an extension 18 in a hole 19 where the hooked end part of the cable 14 is placed.
  • An enlargement 20 is also positioned or obtained in one half of the box 11a underneath the curved hook shaped end 14.
  • the enlargement 20, which has various slanting and shapes in height, has, at least in part, a curved shape that follows the oscillations of hole 19 of the operating lever 13. This configuration ensures the engagement of the curved end 14 inside the hole 19 for small oscillations of the lever.
  • An anti-reverse device for the lever of a remote control apparatus is placed on the half box 11a, according to the present invention.
  • This device comprises a knob 21, locked, by means of a radial dowel 22, on a first shaft end 23 placed in a hole 25 of the knob 21 and aligned to a hole 24 of the half box 11a.
  • the knob 21 has a through hole 26, coaxial to hole 25, in which a spring 28, held by means of a another dowel 27, acts upon a small ball 29.
  • An outer structure 30 of the half box 11a has, placed on an arc portion of a circle, a series of three rounded cavities 31, 32 and 33 to partially receive said ball 29. In this way, the ball 29, elastically movable by means of the spring 28, is snap inserted into the cavities.
  • the lever position 13 locking means which can be easily unlocked, have been realised on the outer structure off box 11a, 11b, which are activated through the position of the knob 21.
  • the shaft 23 has an eccentric integral plate 50, shaped to be able to interact with the extension 18 of the lever 13 that has, in a lowered area 41, a projecting pin 34.
  • This plate 50 having a shape of a sector with rounded edges at about 90°, has tooth portions at different heights. Equally, there could be just one tooth element that extends for the entire sector with a central cavity indicated by 38, which is suitable to receive the projecting pin 34.
  • a tooth element with several portions is provided. There is, in fact, a first maximum height tooth portion 35, that occupies a good part of the centre and one side of the sector, a second intermediate height tooth portion 36 towards the remaining sector end and a third minimum height tooth portion 37. This last portion 37 is placed behind the other two, in the area where the sector is attached to the shaft 23 and is suitable to receive the pin 34.
  • the first two tooth portions 35 and 36 have a rounded cavity 38 on the side facing the centre of the plate, said cavity is in relation with the third tooth portion 37, wherein the projecting pin 34 can be received, only when the central locking position of the lever 13 is in place.
  • the ball 29 is housed inside the central cavity 32 of the outer surface 30 of the half box 11a, as shown in figures 1-3.
  • the lever 13 when it is activated through the interaction of the pin 34 with one of the bevelled slanting surfaces 35' of the first tooth portion 35, returns the shaped plate 50 to its initial position rotated towards the side.
  • the knob 21 is rotated in a way to move the second intermediate height tooth portion 36 away from the central position. If the knob accidentally rotates taking the sector plate 50 with it and returning said plate towards the central position, because the lever 13 has been turned back, the sector 50 is returned to its initial rotated position. This happens because the projecting pin 34 of the lever 13 abuts on one of the end surfaces 36' of the second tooth portion 36.
  • This particular device solves the problems of the presently known devices.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP99200545A 1998-06-04 1999-02-25 Dispositif anti-retour pour le levier d'un appareil de commande à distance Withdrawn EP0962849A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI981254 1998-06-04
IT98MI001254A ITMI981254A1 (it) 1998-06-04 1998-06-04 Dispositivo antiinversione per la leva in un comando a distanza

Publications (2)

Publication Number Publication Date
EP0962849A2 true EP0962849A2 (fr) 1999-12-08
EP0962849A3 EP0962849A3 (fr) 2001-04-25

Family

ID=11380173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99200545A Withdrawn EP0962849A3 (fr) 1998-06-04 1999-02-25 Dispositif anti-retour pour le levier d'un appareil de commande à distance

Country Status (2)

Country Link
EP (1) EP0962849A3 (fr)
IT (1) ITMI981254A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470771A (en) * 1968-01-30 1969-10-07 North American Rockwell Transmission and auxiliary throttle control having a safety interlock
GB8707998D0 (en) * 1987-04-03 1987-05-07 Morse Controls Remote control mechanisms
DE4406236A1 (de) * 1994-02-25 1995-08-31 Kloeckner Moeller Gmbh Verriegelungsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
ITMI981254A1 (it) 1999-12-04
EP0962849A3 (fr) 2001-04-25

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