JP2555364Y2 - Damage prevention structure for lifting stand - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting structure for a lifting stand, and more particularly to a structure for preventing damage to a lifting pipe.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional general elevating stand directly presses an elevating pipe 2 directly by an end of a fixing screw 3 attached to the base pipe 1 and presses the elevating pipe 2 against the inner wall of the base pipe 1. The lifting pipe 2 is adjusted to an arbitrary height by the frictional force at this time.

[0003]

However, in the conventional structure, when the lifting pipe is pressed against the inner wall of the base pipe, the contact surface has a large area, but the surface where the tip of the fixing screw 3 contacts the lifting pipe 2 is a point. When the elevating pipe 2 is extended, scratches at a low fixed portion are visible and the appearance quality is impaired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a damage prevention structure for a lifting stand that can prevent damage to a lifting pipe by a fixing member.

[0005]

In order to achieve the above object, a damage prevention structure in a lifting stand according to the present invention is provided by a lifting pipe which is slidable up and down in a base pipe to adjust the height of the stand. The lifting pipe is pressed in a direction perpendicular to the sliding direction, and a fixing screw for fixing the lifting pipe to an arbitrary height by the frictional force is provided between the lifting pipe and the fixing screw. A guard plate, and the guard plate is formed in a substantially U-shape in longitudinal section having an outer piece provided with a fixing screw mounting hole and an inner piece located inside the base pipe and in contact with the elevating pipe. In addition, the guard plate having a substantially U-shaped vertical cross section is used by being locked to the upper end of the base pipe. Preferably, the outer piece and the inner piece of the guard plate are bent by the base pipe and the elevating pipe. There as an arc shape and the arrangement to suit.

[0006]

According to the first aspect of the present invention, since the guard plate is pressed by the fixing member, the fixing member does not directly contact the lifting pipe.
Further, since the guard plate and the lifting pipe come into contact with each other over a wide area, they can be firmly fixed without damage. In addition, the present invention according to claim 2 configured as described above, when loosening the fixing screw, can quickly lift and lower the pipe smoothly by the elastic reaction force of the guard plate itself, and remove the damaged guard plate. Can be easily replaced. further,
According to the third aspect of the present invention configured as described above, the guard plate can be more firmly fixed by making extensive surface contact with the curved surface of the base pipe or the elevating pipe.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a base pipe of a stand, which is made of a pipe material having an open upper end fixed vertically to the base 1a, and a screw hole screwed with a fixing screw 3 as a fixing member near the upper end. 1b is cut off. 2
Reference numeral denotes an elevating pipe which slides up and down inside the base pipe 1, and equipments 5 such as lights are installed at an upper end portion.

Reference numeral 4 denotes a guard plate, which is a thin flat plate having a substantially U-shaped vertical section as shown in FIG.
It is locked on the upper end of the base pipe 1. In this guard plate 4, as shown in FIG.
A mounting hole 4c through which the fixing screw 3 penetrates is provided in the outer piece 4a protruding outside the inner piece 4b, and an inner piece 4b, which is another piece, is located between the base pipe 1 and the elevating pipe 2 so that the fixing screw 3 The tip is prevented from directly contacting the lifting pipe 2. Also,
When the guard plate 4 is locked to the upper end of the base pipe 1, the guard plate 4 is provided with the outer side of the base pipe 1 by the center portion of the outer piece 4a and the inner side by the relation to the curved surface of the base pipe 1. It is clamped by the side end portion of the piece 4b.

With the above construction, when the elevating pipe 2 is fixed at a certain height, when the fixing screw 3 is screwed in, the tip thereof comes into contact with the inner piece 4b of the guard plate 4 and the elevating pipe is Press 2.
The guard plate 4 and the elevating pipe 2 are firmly fixed while securing a wide contact area without damaging the elevating pipe 2. When loosening the fixing screw 3, the inner piece 4b
Exerts the function of a leaf spring, and the elastic reaction force releases the contact with the elevating pipe 2 quickly, so that the elevating can be performed smoothly.

Further, when the height adjustment is repeatedly performed and the guard plate 4 is seriously damaged, the guard plate 4 can be easily replaced by removing the fixing screw 3 to facilitate maintenance.

In this embodiment, the guard plate 4 is formed on a flat plate base, but has a curvature in which the outer piece 4a and the inner piece 4b match the curved surface of the base pipe 1 and the elevating pipe 2 respectively. The shape may be an arc. In this case,
When pressed by the fixing screw 3, the contact between the guard plate 4 and the elevating pipe 2 becomes a surface contact, and can be fixed more firmly.

Further, the base piece 1 has a substantially L-shaped vertical cross section without providing the mounting hole 4c in the outer piece 4a of the guard plate 4.
The length may be such that it can be locked to the upper end of the mounting hole, or a threaded female thread in the mounting hole may be used. Further, in the present embodiment, the fixing screw 3 is used as the fixing member, but other general fixing members such as a pin and a fastening band can be adopted.

[0013]

As described above, according to the first aspect of the present invention, even if pressed by the fixing member, it does not contact the guard plate to damage the lifting pipe, and the damaged guard plate can be easily replaced. In addition, in the present invention according to claim 2, when the fixing screw is loosened in addition to the above, the inner piece is quickly opened by the elastic reaction force of the inner piece, and smooth lifting of the lifting pipe is ensured. Further, according to the present invention, since the arc of the guard plate is in surface contact with the curved surface of the base pipe and the elevating pipe, the elevating pipe can be more firmly fixed.

[Brief description of the drawings]

FIG. 1 is a front view of a partial cross section showing this embodiment.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a perspective view of a guard plate.

FIG. 4 is a front view showing a conventional stand.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base pipe 2 ... Elevating pipe 3 ... Fixing screw 4 ... Guard plate 4a ... Outer piece 4b ... Inner piece

Claims (2)

(57) [Scope of request for utility model registration] 1. A lifting pipe for adjusting the height of a stand so as to be slidable in a vertical direction within a base pipe, and the lifting pipe is pressed in a direction perpendicular to the sliding direction, and is arbitrarily controlled by the frictional force. a fixing screw for fixing the lift pipe height, and a guard plate disposed between the lift pipe and the fixing screw, the guard plate, the outer piece having a mounting hole of the fixing screw
And the inside of the base pipe and in contact with the lifting pipe
With a vertical cross section having a piece and a substantially U-shape,
Place the above guard plate, which is almost U-shaped in cross section, on the base pipe
A lifting stand characterized by being used by being locked to the end
Damage prevention structure. 2. The damage prevention structure for a lift stand according to claim 1, wherein the outer piece and the inner piece of the guard plate are formed in an arc shape corresponding to the curvature of the base pipe and the lift pipe.