JP3062827U - One-touch extension tube - Google Patents

Abstract

(57) [Summary] [Problem] To perform one-touch extension operation of a multi-stage extension tube.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 According to the present invention, a plurality of extension tubes can be extended by one-touch operation without manual operation.

[0002]

[Prior art]

 Stretching out by combining pipes of different diameters, or extending and fixing by joints are often performed manually. On the other hand, the structure of the joint is mainly designed to prevent leakage of the fluid inside the pipe, and the structure is not simple. On the other hand, there is an extension of one-touch extension such as a mobile phone antenna.

[0003]

[Problems to be solved by the invention]

 Conventional manual feed-out fixing, connection with joints, etc. The challenge is to simplify the extension operation and easily adjust the extension length by one touch operation of the push button.

[0004]

[Means for solving the problem]

 Inserting a spring inside each tube. For example, if there are three pipes, the operation of the push button that controls them will cause all pipes to be stretched at once with restrictions imposed. The push button is normally in a stopped state of extension since its stopper portion is normally inserted into the groove of the extension tube by the spring at the bottom portion. See Fig. 4. This push button has a frictional force acting on the pipe, especially in the case of a large diameter, so that the extension of the pipe can be stopped at any point and the length of the pipe can be adjusted. Become.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION

 The present invention will be described below with reference to the drawings. FIG. 1 shows the outer shape before and after elongation. For example, in the case of three stages, A, B, and C are set from the tip, and D is set as the push button. FIG. 2 is an overall cross-sectional view in which each extension tube is housed in a storage tube and is in a contracted state. The cross section of section D has a tip rod (Fig. 3). When the push button is pressed, the lower stopper comes off and coincides with the axis of the elongate tube. FIG. 4 shows the positional relationship between them. The hole diameter of the push button is larger than the outer diameter of the C pipe. However, since the B and C axes can be stopped at an arbitrary position by the operation of the push button and the frictional force of the contact, the extension length can be adjusted. The connection between the tube and each terminal shaft is performed by caulking as shown in FIG. 5 as an example, and the stopper for each shaft is also protruded into the inside of the tube by caulking.

[0006]

【Example】

 The present invention can be applied to the following uses. Antennas and conventional short-length antennas become longer with a single touch, resulting in better sensitivity. The rod, teacher, and speaker can be extended appropriately when used. Easy to carry Fishing rod, convenient to carry, lightweight baton, can be carried inconspicuously. It comes into use immediately when it comes to an emergency.

[0007]

[Effect of the invention]

 It is convenient to use the shortened length when carrying at all times, but when using it, the required length can be obtained with one push button operation. It is lightweight, short and portable.

[Brief description of the drawings]

FIG. 1 is an external view of an extension tube before and after extension.

FIG. 2 is a sectional view of a part D and a storage tube.

[Fig. 3] D part tip rod

FIG. 4 is a diagram showing the operation of a D part push button.

FIG. 5: Connection between tube and terminal shaft, and stopper

[Explanation of symbols]

 21, push button 22, storage tube 23, tip rod 24, spring 51, caulking fixed 52, caulking stopper 53, preceding tube 54, succeeding tube 55, terminal shaft

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[Procedure amendment]

[Submission date] April 21, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (3)

[Utility model registration claims] 1. A plurality of extension tubes each having a built-in spring inside each tube, and the whole is extended by one-touch operation of a push button. 2. During the extension, the operation of the push button generates a frictional force between the push button and the tube, thereby restricting the extension and making the length adjustable. 3. A projection is provided on the inner surface of the tube as a stopper for each tube.