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Concentric cross mechanism for transiting torsion

  • US 7,774,984 B2
  • Filed: 07/27/2007
  • Issued: 08/17/2010
  • Est. Priority Date: 07/27/2007
  • Status: Expired due to Fees
First Claim
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1. A concentric cross mechanism for transiting torsion, comprising:

  • a main body unit of the concentric cross mechanism, wherein the main body unit of the concentric cross mechanism comprises;

    a cross body;

    an upper cover disposed on an upper side of the cross body;

    a bottom cover disposed on a bottom side of the cross body;

    a torsion output axle disposed inside the cross body and corresponding to the upper cover and the bottom cover; and

    a first bevel gear mated with the torsion output axle;

    a main body unit of a torsion-driven mechanism, wherein the main body unit of the torsion-driven mechanism is disposed on a side of the cross body, the main body unit of the torsion-driven mechanism comprises;

    a casing for the torsion-driven mechanism;

    an axle of the driven bevel gear disposed inside the casing for the torsion-driven mechanism; and

    at least one scroll spring disposed inside the casing for the torsion-driven mechanism and corresponding to the axle of the driven bevel gear;

    a main body unit of a force-generating mechanism, wherein the main body unit of the force-generating mechanism is disposed on a second side of the cross body and corresponds to the main body unit of the torsion-driven mechanism, the main body unit of the force-generating mechanism comprises;

    an axle of the torsion-generating bevel gear; and

    a force-generating device connected to the axle of the torsion-generating bevel gear and providing a power source thereto; and

    a restriction device disposed on either the upper cover and the bottom cover and corresponding to the torsion output axle, wherein the restriction device comprises;

    a positioning block;

    a positioning post; and

    a rotary rod mated with the torsion output axle, wherein the rotary rod is disposed between the positioning block and the positioning post, whereby the rotation angle of the rotary rod is limited;

    wherein a left side and a right side of the main body unit of the concentric cross mechanism each respectively have a concentric hole, a horizontal concentric axis is defined inside the horizontal space of the cross body via centers of the holes on the left side and the right side, middle portions of an upper side and a bottom side of the main body unit of the concentric cross mechanism respectively have a hole, a vertical concentric axis is defined inside the vertical space of the cross body via centers of the holes on the upper side and the bottom side, a center point is defined by crossing the vertical concentric axis and the horizontal concentric axis;

    wherein the first bevel gear respectively mates with the axle of the torsion-generating bevel gear and the axle of the driven bevel gear, the axle of the torsion-generating bevel gear is disposed opposite to the axle of the driven bevel gear and the two axles spin in opposite directions, both the axle of the torsion-generating bevel gear and the axle of the driven bevel gear transit a torsion to the first bevel gear and the first bevel gear outputs the torsion from an upper end and a bottom end of the torsion output axle;

    wherein when an automatic door is driven to be opened via a torsion output end of the torsion output axle, the restriction device is connected with other torsion output end of the torsion output axle whereby the door spins simultaneously with the rotary rod, the door is limited to swing at a predetermined angle range depending that the rotary rod spins between the positioning block and the positioning post.

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