JPS62297518A - Fixing device for expansion pipe body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention mainly focuses on line-of-sight guidance. Expanding and contracting work on posts and posts for fence-like bodies The purpose is to facilitate the installation and removal of This was done as a. Figure below A detailed explanation of the present invention will be given below.

The front sectional view of FIG. 1 shows a state in which the tubular body 2 is fixed within the tubular body 1. FIG. 2 is a sectional view of the inside left side of the tube body 2. As shown in FIG. As shown in FIGS. 1 and 2, the convex portion 3a provided at one end of the coil spring 3 wound around the pin 4 passing through the tube body 2 laterally passes through the groove-shaped holes 2a and 1a and is fitted. ing. To release this fixed state and fix the tube body 2 generally downward, first pull the tube body 2 upwards, and the convex part 3a fitted in the groove-shaped hole 1a will fit along the slope of the release part 3c. It escapes from the tube body 1 and comes into contact with the inner wall surface of the tube body 1. Next, when the tube body 2 is rotated to the left or right and lowered, it passes through the groove-shaped hole 1a without returning, so when it is rotated again near 1b, the convex part 3a fits into 1b, and the locking part 3b The horizontal surface is pressed against and fixed to the lower end of 1b.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front sectional view of essential parts showing an embodiment of the present invention. FIG. 2 is a sectional view of the left side of the main part. FIG. 3 is a left side view. 1 is the tube body. 2 is the tube body. 3c is the release part. 1a and 1b are groove-shaped holes provided in the tube body 1. 4 is a pin. 4a is the pin terminal. 4
b is the collar placed over the pin. that's all

Claims (1)

[Claims] 1. Pipe body 2 can be slid freely within pipe body 1 The convex coil spring is inserted into the tube body 1. Required number of sizes that allow part 3a to be inserted and removed Groove-shaped holes 1a and 1b are provided, and the pipe body 2 A groove-shaped hole 2a is provided in the hole. moreover Above the groove-shaped hole 2a provided in the tube body 2 Pass pin 4 through this pin. At least the wrapped coil spring 3 A convex portion 3a is provided at one end, and the convex portion 3a The bottom of the locking part 3b is held almost horizontally. and a release part 3c with a slope at the upper part. , due to the unforced force of the coil spring 3, the convex The part 3a is inserted into the tube body 2 from the groove-shaped hole 2a. It is possible to go out and the tube body 2 rises. At times, the inclination of the release part 3c of the convex part 3a Therefore, the convex portion 3a is located in the groove-shaped hole of the tube body 1. It enters into the tube body 1 from the upper end and the tube When the body 2 descends, the locking part 3b Pressure-fitted to the lower end of the groove-shaped hole of tube body 1 to stop the descent. Structure as above A telescopic tube body characterized by Fixation device. 2. For signs with a sign attached to tube body 2 Prop. 3. Telescopic pipe with connecting tool installed in pipe body 2 A fence-like body that uses the body as the required number of supports.