Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
  • H01H23/28—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with three operating positions
  • H01H23/30—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with three operating positions with stable centre positions and one or both end positions unstable
• • 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
  • G05G5/05—Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
  • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
  • G05G1/04—Controlling members for hand actuation by pivoting movement, e.g. levers
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
  • H01H23/02—Details
  • H01H23/12—Movable parts; Contacts mounted thereon
  • H01H23/14—Tumblers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/20—Control lever and linkage systems
  • Y10T74/20396—Hand operated
  • Y10T74/20474—Rotatable rod, shaft, or post

Definitions

• the present invention relates to a rotary control device, intended in particular to be fixed on a handle of a remote mobile machine, in particular machinery, agricultural machinery or handling.
• a mobile device remote control comprises, in known manner, a handle movable in at least one degree of freedom with respect to a support, the movement of this handle allowing an operator to control at least one receiving member outside the remote control.
• a first type of device comprises two members, movable in rotation relative to each other about an axis, formed by a body intended to be fixed on a handle of the remote control on the one hand, and a part of on the other hand, the device also comprising elastic return means for returning the actuating portion in the vicinity of an equilibrium position relative to the body from which a user can drive the actuating part in two opposite directions with respect to the equilibrium position.
• the elastic means comprise a winding and two movable branches, each movable branch being intended to cooperate with:
• the two driving abutments and the two locking abutments form two pairs of abutments belonging to the two members movable in rotation with respect to one another, the two movable arms being in position equilibrium, in contact with two stops of a first of the two pairs, the elastic means being immobilized relative to a first member.
• This type of device makes it possible to provide a simple system for returning to the equilibrium position.
• a residual clearance between the second member and the elastic means causes a free movement of the actuating part, which is not therefore subject to the action of the return means on a part of its stroke.
• FIGS. 1 and 2 schematically illustrate the relative positioning, in equilibrium position, of the body C with two blocking stops B1 and B2, of the actuating part A with two drive stops B3 and B4, and elastic means E having a single winding and two movable legs.
• a residual clearance J1 or J2 respectively appears, according to the configurations, between the actuating part and the elastic means, or between the body and the elastic means.
• document FR2823368 describes such a type of double-winding spring. This type of device thus gives satisfaction with regard to the removal of the residual clearance.
• the structure of the spring, as well as those of the body and the actuating portion are however more complex than those exposed for the first type of spring.
• the present invention relates to a device of the first type described above, comprising first elastic means corresponding to the elastic means of a device of this first type, and characterized in that the device also comprises second resilient means taking support, in equilibrium position, on the one hand on a movable branch of the first elastic means, and on the other hand against a bearing portion of the second member.
• the movable branches of the first elastic means are both in contact against the two stops of a first member, and thus immobilized.
• the second elastic means which are supported on the first elastic means, allow, in equilibrium position, to exert an elastic force on the second member, exerted between a stop of this second member, and a bearing portion of this second organ.
• the first member and the first elastic means are thus immobilized relative to each other, the second member is immobilized by the second elastic means, bearing on the first elastic means.
• the device uses elastic means with a simple winding as in the first type of spring described, to maintain a simple spring structure.
• the second elastic means have a stiffness lower than the stiffness of the first elastic means.
• the difference in stiffness between the first and the second elastic means makes it possible to prevent the stresses exerted by the second elastic means from disturbing the holding in position of the first elastic means by the two stops of the first member.
• the second elastic means comprise an elastic tab connected to a movable branch of the first elastic means.
• the elastic tab is connected by a bend to the end of a movable branch of the first elastic means.
• the bearing portion is constituted by an additional stop located on the second member.
• the bearing portion is constituted by a drive or locking stop, the second elastic means extending obliquely with respect to a plane containing the axis of rotation.
• the device comprises an axial abutment limiting the translational movement of the winding in the direction of the axis of rotation.
• the second elastic means are fixed on the second member.
• the second elastic means comprises an elastomer element.
• Figure 1 is a schematic view of a first device according to the state of the art.
• Figure 2 is a schematic view of a second device according to the state of the art.
• Figure 3 is a perspective view of a first device according to the invention, a part of this device having been cut.
• FIG. 4 is a sectional view, on top, of the device of FIG.
• FIG. 5 is a front view of the elastic means of the device of FIG. 1.
• FIG. 6 is a perspective view of the elastic means of FIG.
• Figure 7 is a view of a second device according to the invention.
• a rotary control device for a mobile equipment remote control comprises, in known manner, a body 2 intended to be fixed on a handle of the remote control, not shown, the body 2 comprising a first part or base 3 intended to be fixed on the handle by its base, which comprises fixing means 4, in particular slots allowing the passage of fixing screws, and a second part or cover 5, intended for be firmly attached to the base 3.
• the device comprises an actuating part 6 movable in rotation about an axis A with respect to the body 2, comprising in this embodiment: a cap 7 outside the body 2, intended in particular to be actuated in contact with a a user's finger, a pivot 8, secured in movement by its ends of the cabochon 7, rotatable in a through-housing formed between the base 3 and the cover 4 of the body 2, a permanent magnet 9, integral in movement of the pivot 8, and contained in the housing between the base 3 and the cover 4.
• Detection means constituted by a Hall effect sensor 10, are fixed on the base 4, and detect the movement of the magnet 9 facing each other, in order to generate an electrical control signal derived from the movement of the actuating part 6.
• the device comprises a spring 12 which comprises first elastic return means 13 for returning the actuating portion 6 to an equilibrium position E from which a user can drive the actuating part in two opposite directions D1, D2 with respect to the equilibrium position E, by contact with the cap 7.
• the first elastic means 13, of a first stiffness k1 comprise a single winding 14, whose loops surround the axis of rotation A, and two movable branches 15, 16 in the extension of the two ends of the winding 14.
• the first movable branch 15 is intended to cooperate with: a first abutment 17 provided on the driving cap 7 of the driving portion 6 for driving the first movable branch 15 in a first direction D1.
• a first locking stop 19 provided on the body 2 intended to limit its stroke and serve as a support on the body when the actuating portion is driven in a second direction D2.
• the second movable branch 16 is intended to cooperate with: a second stop 18 for driving formed on the cap 7 of the driving part 6 allowing driving the second movable branch 16 in the second direction D2. a second stop 20 formed on the body 2 to limit its stroke and serve as a support on the body when the actuating portion is driven in a first direction D1.
• the spring 12 also comprises second elastic means of a second stiffness k2, lower than the first stiffness, constituted by an elastic tab 22 connected by a bend 23 at the end of the second movable arm 16 of the first elastic means 13.
• tab 22 is contained in a plane passing through the axis of rotation A of the actuating part 6.
• the second elastic means are supported on the one hand on the second movable branch 16 of the first elastic means, and on the other hand are intended to bear against a bearing portion of the actuating portion 6, constituted by a stop additional 24 located on the actuating part.
• the positioning of the additional stop 24 relative to the second elastic means 22 is such that during a rotation in the direction D1, the additional stop 24 is in contact with the second elastic means 22 before the second drive stop 18 is in contact with the second movable branch 16.
• the movable branches 15, 16 of the first elastic means 13 are both in contact against the two locking stops 19, 20 of the body 2, and thus immobilized.
• the second elastic means 22, which bear on the first elastic means 13, exerts an elastic force on the actuating part 6, exerted between: the first driving abutment 17 on which bears the first movable branch 15 forming part of first resilient means 13 immobilized, and the additional stop 24, on which bears the elastic tab 22.
• the second elastic means in the form of an elastic tab, thus makes it possible to eliminate the residual clearance.
• the operation is similar to that of a device according to the first known type described above.
• the additional stop 24 is in contact with the end of the elastic tab 22, which bends, in particular thanks to its elasticity k2 less than that of the first elastic means 13, and then once that the elastic tab 22 is folded, the second driving abutment 18 comes into contact with the second movable arm 16, substantially at the level of the bend 23, and drives this second movable arm 16.
• the two movable arms 15, 16 as well as the stops are arranged asymmetrically with respect to a plane of symmetry of the actuating part in equilibrium position.
• This arrangement makes it possible to use a body of known shape, which has a cylindrical shape only on a limited part of its upper surface, around which the elastic tab 22 can move in rotation.
• the device comprises an axial stop not shown, limiting the translational movement of the winding 14 and the entire spring in the direction of the axis of rotation A of the actuating portion 6.
• the bearing portion is constituted by the extension of the second drive abutment, the support branch having an oblique profile, with respect to a plane passing through the axis of rotation A of the part actuator 6.
• the second elastic means may be constituted by an elastomer element 25, fixed on the actuating portion 6, and intended to be, in equilibrium position, positioned in compression between a bearing portion of the actuating part 6 and a movable branch of the first elastic means.
• the second elastic means must be supported on a support portion of the body to allow to constrain the device in equilibrium position.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Mechanical Control Devices (AREA)
• Toys (AREA)
• Transmission Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

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• 2006
  • 2006-04-12 FR FR0603232A patent/FR2899995B1/fr not_active Expired - Fee Related
• 2007
  • 2007-03-12 JP JP2009504769A patent/JP5331677B2/ja not_active Expired - Fee Related
  • 2007-03-12 US US12/296,443 patent/US8030587B2/en not_active Expired - Fee Related
  • 2007-03-12 WO PCT/FR2007/000429 patent/WO2007116132A1/fr not_active Ceased
  • 2007-03-12 EP EP07731125.6A patent/EP2005455B1/de not_active Not-in-force
  • 2007-03-12 CN CN2007800130408A patent/CN101421807B/zh not_active Expired - Fee Related

Non-Patent Citations (1)

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