JPH032732Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a rectangular cylindrical external leg of an elevating table such as a drafting table or a medical instrument mounting table, and a circular leg that fits loosely into the hollow part of the external leg. This invention relates to a retainer for guide rollers to be placed in a portion opposite to the guide roller.

[Conventional technology]

Conventionally, when an internal leg is slidably held on a rectangular cylindrical external leg by a guide roller, a bracket is fixed to the internal leg, and the guide roller is rotatably supported on this bracket. The surface of this guide roller is in contact with the inner wall surface of the external leg.

[Problem that the invention attempts to solve]

This configuration has the disadvantage that it is not easy to attach the rollers to the brackets and the brackets to the legs.

The present invention aims to eliminate the above-mentioned defects.

[Means to solve problems]

In order to achieve the above object, the present invention provides mutually perpendicular side wall portions 1 of a main body 12 having an L-shaped cross section.
2a, 12b, at least two positions in the longitudinal direction,
The rollers 20 are aligned with the rotation guide direction in the longitudinal direction.
is rotatably supported, and the central axis of rotation of the roller 20 pivotally supported by the one side wall 12a and the central axis of rotation of the roller 20 pivotally supported by the other side wall 12b are set at right angles to each other. It is.

[Effect]

Therefore, if the L-shaped main body 12 is placed between the cylindrical outer leg 2 and the inner leg 6, the rollers 20 of the main body 12
comes into contact with the outer wall surface side of the inner leg body 6 and the inner wall surface side of the outer leg body 2. Thereby, the internal leg 6 can be fitted and held in the external leg 2 via the rollers 20 so as to be movable up and down relative to the external leg 2. Further, the rollers 20 of the retainer body 12 disposed between the cylindrical external leg 2 and the internal leg 6 abut on the guide surface on the internal leg 6 side at right angles to each other, and at right angles to the wall surface of the external leg 2. The retainer body 1
2 is regulated by the internal legs 6 and the external legs 2 and does not cause sideways vibration. Further, since the retainer bodies 12 between the external legs 2 and the internal legs 6 are separated from each other, if the facing space between the external legs 2 and the internal legs 6 is the same, legs of various sizes can be used. Can be adapted.

〔Example〕

The configuration of the present invention will be explained below with reference to an elevating drafting table shown in the accompanying drawings.

Reference numeral 2 denotes a square cylindrical external leg on which the base 4 is erected, and a square cylindrical internal leg 6 is loosely fitted into a hollow space inside the leg. A drawing board support frame (not shown) is attached to the upper end of the internal leg 6. A thin iron plate 10 is fixed to the inner wall surface of the external leg 2, and the iron plate 10 forms a roller guide surface. In FIGS. 3 and 4, reference numeral 12 denotes a retainer body made of a long steel plate member with an L-shaped cross section, and both side walls 12a, which are perpendicular to each other,
Elongated holes 14 for roller placement are transparently provided at two positions in the longitudinal direction of the roller 12b. 15 is a stopper, 16 is a projecting piece provided on both sides of each long hole 14, and a shaft holding hole 18 is bored in this, and the upper end opening of the shaft holding hole 18 is formed in a tapered shape. There is. 20 is a roller, and a support shaft 22 is rotatably fitted in the center of the roller. In addition, Koro 20
is not limited to a cylindrical shape, but a spherical roller may be used and rotatably supported by the main body 12. Next, the case where the internal leg body 6 is attached to the external leg body 2 will be explained.

First, the inner leg 6 is loosely fitted into the outer leg 2. Next, a roller 20 is selected according to the space between the inner leg 6 and the outer leg 2, and the selected roller 20 is
The support shaft 22 is pushed into the shaft holding hole 18 of the projection piece 16 and fitted. The shaft holding hole 18 is formed with a curved surface having approximately the same curvature as the outer peripheral surface of the support shaft 22 so that the support shaft 22 inserted therein will not easily come off. The retainer body 12 with the rollers 20 attached is placed in the first
As shown in the figure, it is located between each corner of the outer leg 2 and the inner leg 6. As a result, the surfaces of the rollers 20 rotatably attached to each retainer body 12 come into contact with the roller guide surfaces on the inner wall surface side of the outer leg body 2 and the outer wall surface of the inner leg body 6 at positions in eight directions. Note that the support shaft 22 on which the roller 20 is rotatably fitted may be fixed in advance between the projecting pieces 16. The scope of use of the present invention is not limited to an elevating drafting table, but the external leg 2 and the internal leg 6 that are erected on the base 4, and the medical instruments placed on the upper end of the internal leg 6. Or a lifting platform for medical instruments equipped with a mounting plate for equipment, etc.
It can also be applied to chairs, etc. In addition, the lower end of the internal leg 6 is fixed to the base 4, and the external leg 2 is movable up and down with respect to the internal leg 6, and a drawing board support frame and a mounting plate are placed on the upper end of the external leg 2. A board, seat, etc. may be attached.

[Effect of idea]

Since the present invention is constructed as described above, the cylindrical external leg can support the internal leg in a movable manner relative to the cylindrical external leg without providing a lateral vibration prevention mechanism, and the both legs If the space between the legs is the same, there is an advantage that legs of various sizes can be used.

[Brief explanation of drawings]

The drawings show a preferred embodiment of the present invention; FIG. 1 is a cross-sectional view, FIG. 2 is a longitudinal sectional view, FIG. 3 is a front view, and FIG. 4 is a side view. 2...External leg body, 4...Base, 6...Internal leg body, 10...Iron plate, 12...Retainer, 14...
Elongated hole, 16... protrusion, 18... shaft holding hole, 20...
...Colo, 22...Spindle, 24...Retainer.

Claims (1)

[Scope of utility model registration request] At least two of the mutually perpendicular side wall portions 12a and 12b of the main body 12 having an L-shaped cross section in the longitudinal direction
The roller 20 is rotatably supported at the same position with the rotation guide direction aligned with the longitudinal direction, and the rotation center axis of the roller 20 supported on the one side wall 12a and the other side wall 12b are aligned. A guide roller retainer characterized in that the rotation center axes of the pivotally supported rollers 20 are set at right angles to each other.