Device for moving headrest back and forth

Device for moving headrest back and forth

  • CN 1,774,354 B
  • Filed: 04/14/2004
  • Issued: 07/18/2012
  • Est. Priority Date: 04/14/2003
  • Status: Active Grant
First Claim
Patent Images

1. the device of headrest that is used to move around comprises:

  • the strut (114) with vertical component (110) of horizontal component (112) and pair of parallel;

    Rachet (RM), this rachet are provided with one or two the relative tooth portion (116) that is formed by pawl (116b) and a plurality of tooth (116a), and are arranged in the central part of the horizontal component of said strut (114);

    Tilt adjustment device (TAD), this tilt adjustment device comprise a pair of parallel member that all has with the bottom of the central part pivotal engagement of the horizontal component (112) of said strut (114);

    Stop part (CM);

    But this stop part comprises one or a pair of gear (120);

    But said gear have be used for the tooth (116a) of said rachet (RM) go up move and with its ingear tooth (120a) so that can prevent said tilt adjustment device (TAD) reversing;

    The device (MD) that moves around, this device that moves around comprises the pair of parallel member, an end of said parallel member is pivotably connected on the central part of horizontal component (112) of said strut (114), and is arranged to the headrest that can move around;

    The horizontal component (112) that first torsion-coil spring (130), the two ends of this spring are hooked in said strut (114) is respectively gone up on the parallel member with said tilt adjustment device (TAD) or the said device that moves around (MD);

    One or a pair of second torsion-coil spring (121), but an end hook of this spring is on said gear (120);

    Movable axis (122), this axle are installed the top with the parallel member that passes the said device that moves around (MD) vertically;

    And one or a pair of adapter plate (124), this adapter plate is pivotably connected to the top of parallel member (128) of top and the said device that moves around (MD) of the parallel member (118) of said tilt adjustment device (TAD).

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