JPH0514408U - Prop length adjuster - Google Patents

Abstract

(57) [Summary] [Purpose] To improve safety without removing the pin when adjusting the column length. [Structure] A pin 11, one pipe 21 provided with a hole 23 for penetrating the pin 11, an elongated hole 24 provided in the longitudinal direction of the pipe for penetrating the pin 11, and an outer peripheral portion provided with the elongated hole. The other pipe 22 that is screwed on the other side, the screw portion 32 that is screwed on the inner circumference and screwed on the outer circumference of the other pipe 22 on the inner circumference, and the other pipe 22 that is rotatably locked to the screw portion. And a pin fixing portion 31 including a pin penetrating portion 33 provided with a hole 34 through which the pin 11 penetrates, and a column length adjusting tool.

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column height adjuster. More specifically, the ends of one of the two pipes are fitted into the ends of the other pipe, and the two pipes are fixed to each other by inserting pins into the overlapping portions of the two pipes. However, it relates to a column length adjuster that adjusts the height of the column.

[0002]

2. Description of the Related Art Conventionally, one end of one of two pipes is fitted into the end of the other pipe, and a pin is passed through a portion where the two pipes overlap with each other so that the two pipes are mutually connected. In the prop length adjuster that is fixed and adjusts the height of the prop, one pipe is provided with multiple holes, the other pipe is provided with one hole, and the holes of both pipes are selected. So that the pins penetrate.

[0003]

[Problems to be solved by the invention] Therefore, when changing the strut length, it is necessary to pull out the pin from one hole and insert it into another hole, and both pins become free state when the pin is pulled out. Therefore, there was a problem that was dangerous.

[0004]

[Means for Solving the Problems]

The pin, one pipe provided with a hole for penetrating the pin, and the other pipe provided in the longitudinal direction of the pipe and provided with an elongated hole for penetrating the pin and screwed on an outer peripheral portion provided with the elongated hole. It consists of a pipe, a threaded part that is screwed on the inner circumference and screwed onto the outer circumference of the other pipe at the inner circumference, and an inner circumference that is rotatably locked to the threaded part and has a diameter larger than the thread of the other pipe. And a pin fixing part consisting of a pin penetrating part provided with a hole through which the pin penetrates,

Providing

[0007]

When one pipe is attached to the other pipe, the pin fixing portion is attached by screwing the screwing portion to the other pipe. Then, one of the two pipes is fitted into the other pipe and the entire length is inserted until the desired length is reached. Then, overlap the hole provided in one pipe with the long hole provided in the other pipe, and move the pipe fixing part while screwing it into the other pipe so that it also matches the hole provided in the pin fixing part. .. Therefore, the hole provided in one pipe, the long hole provided in the other pipe, and the hole provided in the pin fixing portion are aligned with each other, and the pin is penetrated.

When adjusting the length of the column, the pin should be penetrated through the one pipe, the other pipe, and the pin fixing part, and the pin fixing part should be screwed into the other pipe while the outer circumference of the other pipe is being adjusted. Move along the threads provided on the.

Then, since the pin penetrating portion is rotatably locked to the threaded portion, the pin and one pipe also move while rotating, and the pin moves along the long hole of the other pipe. The penetrating position of one pipe and the other pipe due to the pin is displaced, and the column length changes.

During this time, it is not necessary to pull the pin out of the pipe.

[0011]

Embodiment The invention will be described with reference to FIG. 1 showing a perspective view of an embodiment of the invention and FIG. 2 showing a central sectional view.

Reference numeral 11 is a pin. The pin 11 has a round bar shape, and a chain 12 for connecting with a pipe is attached to an end thereof. Reference numerals 21 and 22 are pipes. Each of the pipes 21 and 22 is made of a metal cylindrical pipe.

On one pipe 21, a plurality of holes 23 through which the pins pass are provided at equal intervals. The other pipe 22 is provided with a long hole 24 which is provided in the longitudinal direction of the pipe 22 and allows the pin 11 to pass therethrough. The other pipe 22 is screwed to the outer peripheral portion provided with the elongated hole 24.

Reference numeral 31 is a pin fixing portion. As shown in FIG. 3, the pin fixing portion 31 has the lower end of the screwing portion 32 fitted to the upper end of the screwing portion 32 and the pipes 21, 22 with respect to the screwing portion 32. And a pin fixing portion 33 that is rotatably locked about the longitudinal direction of the pin. The screwing portion 32 is screwed on the inner circumference and is screwed on the outer circumference of the other pipe 22 on the inner circumference. The pin fixing portion 33 has an inner circumference having a diameter larger than the thread of the other pipe 22 and locked to the threaded portion 32, and also a pin penetration portion provided with a hole through which the pin 11 penetrates. Reference numeral 35 denotes a handle used to rotate the pin fixing portion 31, which is radially provided from the screwing portion 32.

Next, the operation of the embodiment will be described. When one pipe 21 is attached to the other pipe 22, the pin fixing portion 31 is attached by screwing the screwing portion 32 into the other pipe 22. Then, one of the two pipes 21 is fitted into the other pipe 22 and the entire length is inserted to a desired length. Then, the hole 23 provided in the one pipe 21 and the elongated hole 24 provided in the other pipe are overlapped with each other, and the pipe fixing portion 31 is further moved while being screwed into the other pipe so that the pin fixing portion 31 is provided. It is also matched with the hole 34 formed. Therefore, the hole 23 provided in the one pipe 21, the long hole 24 provided in the other pipe, and the hole 34 provided in the pin fixing portion are aligned and the pin 11 is penetrated.

In the case of adjusting the column length, the pin 11 is penetrated through the one pipe 21, the other pipe 22, and the pin fixing portion 31, and the pin fixing portion 31 is screwed into the other pipe 22, The pipe is moved along the thread provided on the outer circumference of the other pipe 22.

Then, the pin 11 and the one pipe 21 also move while rotating, and the pin 11 moves along the long hole 24 of the other pipe 22, and the one pipe 21 and the other pipe 22 by the pin 11 are moved. The penetrating position of is shifted and the column length is changed. At this time, since the pin fixing portion 33 is fixed to the threaded portion 32 and has an inner circumference having a diameter larger than the thread of the other pipe 22, the pin fixing portion 33 moves without contacting the other pipe 22. Be touched.

During this time, it is not necessary to pull out the pin 11 from the pipes 21 and 22.

The chain 12 is attached to the other pipe to prevent it from falling off.

[0020]

[Advantage of the Invention] It is safe because it is not necessary to pull out the pin when adjusting the length of the column.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a central sectional view of the embodiment of the present invention.

FIG. 3 is a partially enlarged view of FIG.

[Explanation of symbols]

 11 pin 21 pipe 22 pipe 23 hole 24 long hole 31 pin fixing part 32 screwing part 33 pin penetrating part 34 hole

Claims (1)

[Scope of utility model registration request] 1. A pin, one pipe provided with a hole for penetrating the pin, an elongated hole provided in the longitudinal direction of the pipe for penetrating the pin, and screwed on an outer peripheral portion provided with the elongated hole. The other pipe, and the inner periphery having a diameter larger than the thread of the other pipe, which is screwed on the inner periphery and screwed on the outer periphery of the other pipe at the inner periphery, and rotatably locked to the threaded portion. And a pin fixing portion including a pin penetrating portion provided with a hole through which the pin penetrates.