JPH0436116U

JPH0436116U -

Info

Publication number: JPH0436116U
Application number: JP7857690U
Authority: JP
Priority date: 1990-07-24
Filing date: 1990-07-24
Publication date: 1992-03-26

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す断面図、第
２図はその作動状態を示す要部拡大断面図、第３
図は第２実施例を示す断面図、第４図は第３実施
例を示す断面図である。１……主ボルト、２……ねじ部、３……おねじ
、３ａ……上辺、４……頭部、５，５ａ，５ｂ…
…位置決めピン、６……可変ねじ、６ａ……ピン
孔、７……おねじ、７ｂ……下辺、８……係止孔
、９……底板、１０，１０ａ，１０ｂ……調節軸
、１１，１１ａ，１１ｂ−１、１１ｂ−２……お
ねじ、１２……係止駒、１３，１３ａ，１３ｂ…
…係合部、１４……段部、１５……ケース、１６
……ねじ孔、１６ａ……上辺、１６ｂ……下辺。 FIG. 1 is a sectional view showing the first embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part showing its operating state, and FIG.
The figure is a sectional view showing the second embodiment, and FIG. 4 is a sectional view showing the third embodiment. 1...Main bolt, 2...Threaded portion, 3...Male thread, 3a...Top side, 4...Head, 5, 5a, 5b...
...Positioning pin, 6...Variable screw, 6a...Pin hole, 7...Male thread, 7b...Bottom side, 8...Locking hole, 9...Bottom plate, 10, 10a, 10b...Adjustment shaft, 11 , 11a, 11b-1, 11b-2...male thread, 12...locking piece, 13, 13a, 13b...
...Engaging part, 14...Step part, 15...Case, 16
...Screw hole, 16a...upper side, 16b...lower side.

Claims

[Claims for Utility Model Registration] 1. A main bolt having a head that is engaged with a tool is provided at one end of the threaded portion, and a variable screw having a male thread of the same diameter and pitch as the threaded portion is provided on the outer periphery. , this variable screw is arranged coaxially with the main bolt and is provided at the other end of the threaded part of the main bolt so as to be non-rotatable but movable in the axial direction, and an adjustment shaft is inserted through the shaft center of the main bolt and the variable screw. The adjustment shaft has its middle part screwed into the shaft center of the main bolt, the other end rotatably but immovably locked in the axial direction to the variable screw, and one end of the adjustment shaft screwed into the shaft center of the main bolt. 1. A bolt with a locking mechanism, characterized in that an engaging part is formed to be exposed to the outside and a tool is engaged with the exposed part. 2. The adjustment shaft has its intermediate portion rotatably but immovably locked in the axial center of the main bolt, the other end screwed into the variable screw, and the one end secured to the head of the main bolt. 2. The bolt with a locking device according to claim 1, further comprising an engaging portion that is exposed to the outside from the portion and is engaged with a tool in the exposed portion. 3. The adjustment shaft has its intermediate portion screwed into the axial center of the main bolt and the axial center of the variable screw by mutually oppositely wound screws, and its one end is exposed to the outside from the head of the main bolt. 2. The bolt with a locking device according to claim 1, wherein the exposed portion is formed with an engaging portion that engages with a tool.