JPS6383038U

JPS6383038U -

Info

Publication number: JPS6383038U
Application number: JP17955686U
Authority: JP
Priority date: 1986-11-20
Filing date: 1986-11-20
Publication date: 1988-05-31
Also published as: JPH0219060Y2

Description

[Brief explanation of the drawing]

第１図から第４図は本考案の一実施例を示す縦
断面図、第５図は要部の横断面図、第６図は同じ
く要部の縦断面図、第７図は内筒の要部の正面図
である。１…外筒、２…内筒、３…ガイド孔、３１…第
１ガイド部、３２…第２ガイド部、４…ロツク体
、５…基板、６…嵌合溝、６０…傾斜面、７…カ
ム面、８…受け止め面、９…スプリング。 Figures 1 to 4 are longitudinal sectional views showing an embodiment of the present invention, Figure 5 is a cross sectional view of the main parts, Figure 6 is a vertical sectional view of the main parts, and Figure 7 is a cross sectional view of the inner cylinder. FIG. 3 is a front view of main parts. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 2... Inner cylinder, 3... Guide hole, 31... First guide part, 32... Second guide part, 4... Lock body, 5... Board, 6... Fitting groove, 60... Inclined surface, 7 ...Cam surface, 8...Receiving surface, 9...Spring.

Claims

[Scope of utility model registration request]

It is a length adjustment mechanism of an extensible member in which an inner cylinder 2 is freely inserted and contracted into an outer cylinder 1, and the inner cylinder 2 includes a first guide portion 31 extending in the vertical direction of the inner cylinder 2 and the first guide. A pair of guide holes 3, 3 consisting of a second guide portion 32 extending from one end in the length direction of the portion 31 in the lateral direction of the inner cylinder 2 are formed in an opposing manner, and a lock is provided between these guide holes 3, 3. The body 4 is hung over the body 4 so that the lock body 4 can move freely along the first and second guide parts 31 and 32.
A substrate 5 is provided to be inserted into the outer cylinder 1, and a plurality of fitting grooves 6 are formed in the substrate 5 along the longitudinal direction of the outer cylinder 1, into which the lock body 4 is fitted when the lock body 4 is positioned in the second guide portion 32. , providing the fitting groove 6 with an inclined surface 60 that allows the lock body 4 to separate from the fitting groove 6 when the inner cylinder 2 is extended with respect to the outer cylinder 1;
forward of the fitting groove 6 in the extension direction of the inner cylinder 2 relative to the outer cylinder 1;
A cam surface 7 for guiding the lock body 4 from the second guide part 32 to the first guide part 31 is provided, and a receiving surface 8 of the lock body 4 is provided on the base plate 5 so that the receiving surface 8 of the lock body 4 is connected to the outer cylinder 1 of the inner cylinder 2. A telescopic member characterized by being provided with a spring 9 that is formed continuously with a fitting groove 6 located at the frontmost position in the retraction direction and biases the lock body 4 in a direction to fit the lock body 4 into the fitting groove 6. Length adjustment mechanism.