Title:
GOLF CLUB FOR SWING PRACTICE
Document Type and Number:
WIPO Patent Application WO/2015/016505
Kind Code:
A1
Abstract:
The present invention relates to a gold club for swing practice, and the purpose thereof is to enable practice which more rapidly increases head speed in the impact zone while maintaining a suitable swing tempo during a golf swing comprising a backswing, a downswing, and a follow swing in the impact zone at the address posture. To this end, a head unit (300) of a golf club for swing practice according to the present invention comprises: a first body (310) coupled to the front end of a shaft (100), and in which a cylindrical guide wall (311) formed with a first male screw (312) at the outer portion of the front end is longitudinally projected and a pair of slide grooves (313) longitudinally cut at the cylindrical guide wall (311) are configured to face each other; a magnet member (320) fixedly arranged at the center of the front end of the first body (310) so as to be accommodated in the inner space of the cylindrical guide wall (311); a second body (330) in which the back end is open, a cylindrical wall surface (331) and a bottom surface (332) are provided so as to be formed into a hollow body, and a first female screw (333) is formed on the inner wall surface of the back end so as to be coupled to the first male screw (312) of the cylindrical guide wall (311), thereby allowing the second body (330) to be coupled so as to communicate with the cylindrical guide wall (311) of the first body (310); a moving body (340) formed into a cylindrical shape so as to be able to move in the longitudinal direction inside the second body (330) and having a protrusion (341) with a reduced diameter formed at the front end, and in which the back end is positionally fixed to the magnet member (320) through magnetism as is usual, and the back end is distanced from the magnet member (320) by a centrifugal force and the front end surface hits the bottom surface (332) of the second body (330) so as to generate a hitting sound when swinging at a speed of a predetermined value or more; a restoring spring (350) in which one end (351) is supported by the protrusion (341) while encompassing the outer portion of the front end of the moving body (340), and the other end (352) is supported by the bottom surface (332) of the second body (330) so as to elastically support the moving body (340) toward the magnet member (320); an adjust-ring (360) comprising a ring-body (361) capable of longitudinally moving while encompassing the outer portion of the magnet member (320) and of which the front end comes in contact with the edge of the back end of the moving body (340), and a pair of wing portions (362) radially and oppositely extended from the ring-body (361) so as to be respectively arranged at the slide grooves (313) of the first body (310) and in which a second male screw (363) formed on the outer portion; and an adjust-nut (370) arranged in an idling manner while encompassing the outer portion of the back end of the cylindrical guide wall (311) of the first body (310), comprises a second female screw (371) formed at the inner wall of the back end so as to be engaged with the second male screw (363) of the wing portions (362) of the adjust-ring (360), and rotates/counter-rotates so as to allow the adjust-ring (360) to move forward/backward, thereby adjusting the interval between the magnet member (320) and the moving body (340).
Inventors:
JIN JONG HO (KR)
CHOI SEUNG WON (KR)
CHOI SEUNG WON (KR)
Application Number:
PCT/KR2014/006387
Publication Date:
February 05, 2015
Filing Date:
July 15, 2014
Export Citation:
Assignee:
JIN JONG HO (KR)
CHOI SEUNG WON (KR)
CHOI SEUNG WON (KR)
International Classes:
A63B69/36
Foreign References:
| KR101048211B1 | 2011-07-08 | |||
| KR100832098B1 | 2008-05-27 | |||
| JP2001009077A | 2001-01-16 | |||
| KR200316627Y1 | 2003-06-18 |
Attorney, Agent or Firm:
SEAH INTERNATIONAL PATENT AND LAW FIRM (KR)
특허법인 세아 (KR)
특허법인 세아 (KR)
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