초록 ▼

The present invention relates to a locking device for a pole, including: a grasping tube having incision portions; operating pins adapted to be inserted in an up and down direction into upper and lower pressing parts; and an axial lever having a pressing plate extended in the lengthwise direction of

The present invention relates to a locking device for a pole, including: a grasping tube having incision portions; operating pins adapted to be inserted in an up and down direction into upper and lower pressing parts; and an axial lever having a pressing plate extended in the lengthwise direction of the pole.

대표청구항 ▼

1. A locking device for use with a pole, the pole having a plurality of connection tubes slidably coupled to each other in the lengthwise direction thereof, wherein a lower connection tube (4) having a relatively smaller diameter than an upper connection tube in two neighboring connection tubes is s

1. A locking device for use with a pole, the pole having a plurality of connection tubes slidably coupled to each other in the lengthwise direction thereof, wherein a lower connection tube (4) having a relatively smaller diameter than an upper connection tube in two neighboring connection tubes is slidably inserted into the upper connection tube (2) in such a manner as to be locked to the upper connection tube (2) or released from the locked state, the locking device comprising: a grasping tube (200) having a body (210) coupled to an end periphery of the upper connection tube (2), incision portions (222) formed at a left side and a right side in the radial direction in such a manner as to provide an upper arch-shaped grasping piece (220) and a lower arch-shaped grasping piece (230) formed independently on an upper portion and a lower portion thereof, and upper and lower pressing parts (224, 234) extended outwardly from both sides of each of the upper arch-shaped grasping piece (220) and the lower arch-shaped grasping piece (230);operating pins (300) adapted to be inserted in an up and down direction into through-holes (226, 236) formed on the upper and lower pressing parts (224, 234) formed on both left and right sides of the upper arch-shaped grasping piece (220) and the lower arch-shaped grasping piece (230);an axial lever (400) having a pressing plate (410) extended in the lengthwise direction of the pole and a cam type hinge part (420) formed on an end portion of the pressing plate (410) in such a manner as to be hinge-coupled to upper protruded end portions of the operating pins (300) to a state of being rotated in the lengthwise direction of the pole, andwherein each operating pin (300) comprises an upper pin (310) adapted to be slidably inserted into the through-holes (226, 236) of the upper and lower pressing parts (224, 234) of the grasping tube (200) in an up and down direction and having upper end portions hinge-coupled to the axial lever (400), and an adjusting screw (320) adapted to be inserted upwardly into the through-holes (226, 236) of the upper and lower pressing parts (224, 234) in such a manner as to be screw-coupled to the upper pin (310), the adjusting screw (320) having a head (324) locked to the lower pressing part (234). 2. The locking device for use with a pole according to claim 1, wherein the grasping tube (200) has loosening prevention pads (500) fixedly disposed to a top surface of the lower pressing parts (234) thereof in such a manner as to elastically restrict an outer peripheral surface of the adjusting screws (320) and to prevent the adjusting screws (320) from being unfastened. 3. The locking device for use with a pole according to claim 2, wherein each loosening prevention pad (500) comprises a base (510) fixed to the top surface of each lower pressing part (234) and elastic protrusions (520) formed in a middle portion of the base (510) to elastically pressurize the outer peripheral surface of each adjusting screw (320). 4. The locking device for use with a pole according to claim 1, wherein the grasping tube (200) has an incised slot (212) formed on the left and right sides between the body (210) and the upper and lower arch-shaped grasping pieces (220, 230). 5. A locking device for use with a pole, the pole having a plurality of connection tubes slidably coupled to each other in the lengthwise direction thereof, wherein a lower connection tube (4) having a relatively smaller diameter than an upper connection tube in two neighboring connection tubes is slidably inserted into the upper connection tube (2) in such a manner as to be locked to the upper connection tube (2) or released from the locked state, the locking device comprising: a grasping tube (200) having a body (210) coupled to an end periphery of the upper connection tube (2), incision portions (222) formed at a left side and a right side in the radial direction in such a manner as to provide an upper arch-shaped grasping piece (220) and a lower arch-shaped grasping piece (230) formed independently on an upper portion and a lower portion thereof, and upper and lower pressing parts (224, 234) extended outwardly from both sides of each of the upper arch-shaped grasping piece (220) and the lower arch-shaped grasping piece (230), the upper and lower pressing parts (224, 234) formed on each of both left and right sides thereof having through-holes (226, 236) formed to be passed in an up and down direction therethrough;operating pins (300) each adapted to be inserted in an up and down direction into the through-holes (226, 236) of the upper and lower pressing parts (224, 234); andan axial lever (400) having a pressing plate (410) extended in the lengthwise direction of the pole and a cam type hinge part (420) extended from the pressing plate (410) in such a manner as to be hinge-coupled to upper protruded end portions of the operating pins (300) to a state of being rotated in the lengthwise direction of the pole, andwherein each operating pin (300) comprises an upper pin (310) adapted to be slidably inserted into the through-holes (226, 236) of the upper and lower pressing parts (224, 234) of the grasping tube (200) in an up and down direction and having upper end portions hinge-coupled to the axial lever (400), and an adjusting screw (320) adapted to be inserted upwardly into the through-holes (226, 236) of the upper and lower pressing parts (224, 234) in such a manner as to be screw-coupled to the upper pin (310), the adjusting screw (320) having a head (324) locked to the lower pressing part (234). 6. The locking device for use with a pole according to claim 5, wherein the grasping tube (200) has loosening prevention pads (500) fixedly disposed to a top surface of the lower pressing parts (234) thereof in such a manner as to elastically restrict an outer peripheral surface of the adjusting screws (320) and to prevent the adjusting screws (320) from being unfastened. 7. The locking device for use with a pole according to claim 6, wherein each loosening prevention pad (500) comprises a base (510) fixed to the top surface of each lower pressing part (234) and elastic protrusions (520) formed in a middle portion of the base (510) to elastically pressurize the outer peripheral surface of each adjusting screw (320). 8. The locking device for use with a pole according to claim 5, wherein the grasping tube (200) has an incised slot (212) formed on the left and right sides between the body (210) and the upper and lower arch-shaped grasping pieces (220, 230).