JPH0367800U

JPH0367800U -

Info

Publication number: JPH0367800U
Application number: JP12500389U
Authority: JP
Priority date: 1989-10-25
Filing date: 1989-10-25
Publication date: 1991-07-02

Description

[Brief explanation of drawings]

第１図は本考案の要部を示す一実施例の分解斜
視図、第２図ａ，ｂは第１図の組立てた状態の側
断面図であり、それぞれ締付けナツトの締付け前
及び後を示すもの、第３図は締付けナツトの裏面
側斜視図、第４図ａ〜ｃは外れ止めリングの取付
け手順を示す要部の一部破断側面図、第５図は締
付けナツトを緩めたときの要部の一部破断側面図
、第６図はカメラ用の三脚の一実施例の側面図、
第７図は本考案の他の実施例を示す要部拡大断面
図である。１……雲台、２……ラツク棒、３，１３……三
脚基台部、４……筒状部、４ａ……ねじ部、５…
…溝部、６……止めねじ、７……締付けナツト、
７ａ……突起、８，１１……外れ止めリング、８
ａ……突起、８ｂ……凹凸面、１１ａ……歯、１
２……爪、１２ａ……先端。 Figure 1 is an exploded perspective view of an embodiment showing the main parts of the present invention, and Figures 2a and b are side sectional views of the assembled state of Figure 1, showing before and after tightening the tightening nut, respectively. Figure 3 is a perspective view of the back side of the tightening nut, Figures 4 a to c are partially cutaway side views of the main parts showing the procedure for installing the retaining ring, and Figure 5 shows the main parts when the tightening nut is loosened. FIG. 6 is a side view of an embodiment of a camera tripod;
FIG. 7 is an enlarged sectional view of a main part showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Pan head, 2... Rack bar, 3, 13... Tripod base part, 4... Cylindrical part, 4a... Threaded part, 5...
...Groove, 6...Set screw, 7...Tightening nut,
7a... Protrusion, 8, 11... Preventing ring, 8
a... Protrusion, 8b... Uneven surface, 11a... Teeth, 1
2...Claw, 12a...Tip.

Claims

[Scope of Claim for Utility Model Registration] (1) A camera tripod characterized by having the following requirements, in which a rack bar with a pan head attached to the tripod base is movable up and down. (a) forming a cylindrical part on the top surface of the tripod base that passes through the rack rod having a threaded part on the outer periphery;
A tightening nut is provided that is screwed onto the cylindrical portion to tighten a sleeve disposed between the cylindrical portion and the rack rod, and tightens and fixes the rack rod through the sleeve. (b) A retaining ring is provided that is loosely fitted into the cylindrical portion of the tripod base and interposed between the tripod base and the tightening nut. (c) Protrusions that contact each other in the direction of rotation are provided on each of the opposing surfaces of the tightening nut and the retaining ring. (d) A fixing means is provided to fix the retaining ring to the tripod base. (2) A large number of uneven surfaces are formed on the outer periphery of the locking ring, and the ring is screwed onto the tripod base and moves back and forth, and its tip engages the uneven surface of the locking ring to prevent rotation of the locking ring. The tripod for a camera according to claim 1, further comprising a regulating set screw. (3) A large number of ratchet-shaped teeth are formed on the outer periphery of the locking ring, facing in the opposite direction to the tightening direction of the tightening nut, and the tripod base is biased toward the outer periphery of the locking ring by a spring. 2. The camera tripod according to claim 1, further comprising a pawl whose tip engages with ratchet-shaped teeth of said retaining ring to restrict rotation of said retaining ring.