Sunshade driving device having a returning function of a wheel driving member

A sunshade driving device having a returning function of a driving wheel unit consisted of either one of a manual pulley (417a) or a manual driving wheel (412b) comprising:

• a manual driving module (410) actuated by a ball chain or a rotating string,
• a set of pick-up member driven by the manual driving module for directly driving a sunshade rotating shaft,
• a wheel driving member (417) having the a driving wheel element for mounting the ball chain or the rotating string,
• a bi-directional driving clutch (417b) for transmitting or releasing a rotational force of the driving wheel member in any one of both directions,
• when the bi-directional driving clutch (417b) properly drives the driving wheel member in either one of clockwise or counter-clockwise directions, the bi-directional driving clutch (417b) is configured to bind the driving wheel member and the manual driving module (410) to rotate together with the pick-up member;
• and immediately after the rotation, when the bi-directional driving clutch (417b) allows to reverse-rotate the driving wheel member in the opposite direction, the bi-directional driving clutch (417b) is configured to unbind the driving wheel member and the manual driving module (410) to rotate independently from the pick-up member,
• the bi-directional driving clutch (417b) further comprising of a reverse rotating unit (417d) to reverse a retainer (417g) of the bi-directional driving clutch (417b), when an operator releases the ball chain or the rotating string and stops the manual rotating operation,
• the reverse rotating unit (417d) further comprising:
• a spring (417t),
• a fixing pin (417v) fixedly coupled to a fixing end (416d) of a cap member (413),
• a spring bobbin (417u) formed a cylindrical shape, which has a containing groove with a preset depth for receiving a spring (417t) on one end of inner circumferential surface and a rope coupler on the opposite end of an outer peripheral surface, and
• a returning rope (417w), of which the one end is coupled to the rope coupler of the spring bobbin (417u);
• and of which the opposite end is coupled to the rope coupler (417n) of the retainer (417g) of the bi-directional driving clutch (417b).

A sunshade driving device having a returning functions of a driving wheel member, comprising:

• a manual driving module (400a) actuated by a ball chain or a rotation string,
• a pick-up member for driving a sunshade rotating shaft by the manual driving module (400a),
• a wheel driving member (700) having a manual pulley (700a) for mounting the ball chain or the rotating string,
• a bi-directional switching clutch member (710) for transmitting or releasing a rotational force of the manual pulley in any one of both directions,
• wherein, the manual driving module (400a) is started to drive by the rotation of the manual pulley (700a);
• the rotation of the manual driving module (400a) is stopped by the weight of the sunshade, when the manual pulley (700a) stops driving;
• and
• when the bi-directional switching clutch member (710) properly drives the manual pulley in any one of both directions, the bi-directional switching clutch member (710) is configured to bind the manual pulley and the manual driving module (400a) to rotate together with the pick-up member (500);
• and immediately after the rotation, when the bi-directional switching clutch member (710) allows to reverse-rotate the manual pulley in the opposite direction, the bi-directional switching clutch member (710) is configured to unbind the manual pulley and the manual driving module (400a) to rotate independently from the pick-up member (500),
• the bi-directional switching clutch member (710) further comprising:
• a bi-directional driver (711) being coupled to the manual pulley (700a) and having a body in an inner circumferential surface where a plurality of bi-directional moving grooves arranged with a constant interval, and each of the bi-directional moving grooves formed an arc-shape having a small diameter (711a) and a large diameter (711b);
• a retainer (712) having an engaging part (712a) coupled to one end of the an elastic member, and a plurality of the unit elastic member holders (712b) arranged with a constant interval;
• and
• a plurality of roller members (713) inserted rotatable between the bi-directional moving grooves of the bi-directional driver (711) and the unit elastic member holders (712b) of the retainer (712), respectively.

A sunshade driving device having a returning function of a driving wheel member, comprising:

• a manual driving module (400a) actuated by a ball chain or a rotation string,
• a pick-up member (500) for driving a sunshade rotating shaft by the manual driving module (400a),
• a wheel driving member (700) having a manual pulley (700a) for mounting the ball chain or the rotating string,
• a bi-directional switching clutch member (710) for transmitting or releasing a rotational force of the manual pulley in any one of both directions,
• wherein, the manual driving module (400a) is started to drive by the rotation of the manual pulley (700a);
• the rotation of the manual driving module (400a) is stopped by the weight of the sunshade, when the manual pulley (700a) stops driving;
• and
• when the bi-directional switching clutch member (710) properly drives the manual pulley in any one of both directions, the bi-directional switching clutch member (710) is configured to bind the manual pulley and the manual driving module (400a) to rotate together with the pick-up member (500);
• and immediately after the rotation, when the bi-directional switching clutch member (710) allows to reverse-rotate the manual pulley in the opposite direction, the bi-directional switching clutch member (710) is configured to unbind the manual pulley and the manual driving module (400a) to rotate independently from the pick-up member (500),
• the bi-directional switching clutch member (710) further comprising of a reverse rotating unit (714) for reverse-rotating a retainer (712) of the bi-directional switching clutch member (710), when an operator releases the ball chain or the rotating string and stops the manual rotating operation,
• the reverse rotating unit (714) further comprising:
• a torsional spring (714b),
• a fixing member (714d) for fixing one end of the torsional spring (714b) to a fixing rod (714a), and
• a transmitting unit for transmitting the torsional force to the other end of the torsional spring (714b) when the manual driving module (400a) is operated.