JP4185595B2 - Telescopic device such as support - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion / contraction device that vertically expands / contracts a column supporting a display panel or the like.
[0002]
[Prior art]
FIG. 5 shows an example in which the display panel (50) is supported using the support (52). As shown in the figure, the display panel (50) is supported in the display state by the columns (52) standing upright on both sides, but if the floor is uneven, the height of each column (52) Since the height varies, each strut (52) is provided with a telescopic device for adjusting the height so as to absorb the difference in height of the floor.
[0003]
An example of such a telescopic device is the device shown in FIG. This device inserts a small-diameter movable pipe (58) that can move up and down into a large-diameter base pipe (56) attached to the center of the base (54) of the support column (52), and attaches it to the side of the base pipe (56). The movable pipe (58) is pressed and fixed at an arbitrary position by tightening the fixing screw (60) screwed together.
[0004]
[Problems to be solved by the invention]
However, in the telescopic device of FIG. 6, it is necessary to tighten the fixing screw (60) while extending and supporting the movable pipe (58) to the desired height with respect to the base pipe (56). It takes time and effort. Further, since the fixing screw (60) is exposed to the outside, the design is not good.
[0005]
The present invention has been made in view of the above-described problems of the prior art, and provides a telescopic device such as a post that is excellent in operability when extending and contracting the post and the like, and has a good appearance. With the goal.
[0006]
[Means for Solving the Problems]
The present invention solves the above problems as follows.
(1) On the base placed on the floor surface, a screw with a screw part formed at the lower end and the upper end is erected, and an adjustment nut is screwed onto the screw part at the lower end of the screw, and pipe material is connected to the screw. The lower end of the pipe material is supported by the adjusting nut, and a cap is screwed onto the upper threaded portion of the screw so that the lower surface of the cap contacts the upper end of the pipe material. The pipe material is clamped between the adjusting nut and the cap by contacting, and the adjusting nut and the cap are rotated so that the height of the pipe material can be adjusted up and down with respect to the screw thread. And a cylindrical grip that is rotatably fitted to the screw and the pipe member in which the adjustment nut is screwed, and the rotation adjustment nut is inserted into a vertical groove that is recessed in the inner peripheral surface of the grip. The outer periphery of By engaging the projecting engagement protrusion and rotating the grip, the adjustment nut can be rotated via the engagement protrusion, and the engagement protrusion is along the longitudinal groove. Thus, the adjustment nut is allowed to move up and down without moving up and down.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a telescopic device such as a support according to the present invention will be described with reference to the accompanying drawings.
[0008]
FIG. 1 is a perspective view of a support column equipped with the telescopic device of the present embodiment, FIG. 2 is a longitudinal front view of the main part of the telescopic device, and FIG. 3 is a perspective view showing the main part of the telescopic device exposed.
[0009]
As shown in FIG. 1, the present embodiment includes a base (10), a screw (12), a grip (14), a pipe material (16), a support base (18), an adjustment nut (20), etc. It consists of and.
[0010]
The base (10) is fixed with a set screw (19) on a rectangular support base (18), and is erected on the floor surface by the support base (18).
As shown in FIG. 2, the base (10) is formed by integrally providing a vertical cylindrical portion (10b) projecting upward on the upper portion of the truncated conical base portion (10a). ) Is screwed and fixed to the center portion of the).
[0011]
A male screw (12a) is engraved in the lower part of the screw (12), and an internal thread (12b) in the axial direction is engraved from the upper end surface of the screw (12). A circular adjustment nut (20) is screwed onto the lower male screw (12a), and two engaging protrusions (20a) facing the diametrical direction are provided on the outer periphery of the adjustment nut (20). Yes.
[0012]
When the cylindrical grip (14) is fitted to the adjustment nut (20) and the cylindrical portion (10b) of the base (10), and the lower end of the grip (14) is fitted to and supported by the base (10a), The protrusion (20a) comes into engagement with two longitudinal grooves (14a) that are recessed in the inner peripheral wall of the grip (14).
[0013]
FIG. 3 is a cross-sectional plan view showing an engaged state of the grip (14) and the adjusting nut (20). Each engagement protrusion (20a) is engaged with two vertical grooves (14a) that are recessed in the vertical direction on the inner peripheral wall of the grip (14). For this reason, when the grip (14) is rotated, the adjustment nut (20) is also rotated at the same time, and the adjustment nut (20) is screwed in either the upper or lower direction along the screw (12). At this time, since the adjustment nut (20) is allowed to move up and down by the longitudinal groove (14a) inside the grip (14), the grip (14) itself does not move up and down.
[0014]
The screw (12) is inserted into the pipe material (16), and a resin guide tube (21) is fixed to an appropriate position inside the pipe material (16), and is in sliding contact with the screw (12). The ratchet (12) moving up and down prevents rattling and guides its movement. The lower end of the pipe material (16) is in contact with the upper surface of the adjustment nut (20).
[0015]
On the other hand, as shown in FIGS. 1 and 2, a male screw rod (22a) integrated with the cap (22) is screwed into the female screw (12b) at the upper portion of the screw rod (12). As shown in FIG. 1, the pipe material (16) is normally held between the adjusting nut (20) and the cap (22).
[0016]
Next, a method of using the support column provided with the telescopic device according to the present embodiment configured as described above will be described.
[0017]
First, the cap (22) screwed into the upper part of the screw rod (12) is loosened to make the pipe material (16) free. Next, the grip (14) is rotated in the direction in which the adjustment nut (20) is raised, and the pipe member (16) is gradually moved upward. When the desired height is reached, the cap (22) is tightened, and the pipe material (16) is clamped and fixed between the cap (22) and the adjusting nut (20).
[0018]
On the other hand, when the height of the column is lowered, the grip (14) is rotated so that the adjustment nut (20) is lowered, and the pipe material (16) is moved downward. When the desired height is reached, the cap (22) is tightened, and the pipe material (16) is held and fixed.
[0019]
As described above, according to the present embodiment, the height of the pipe material (16) is adjusted by rotating the grip (14). Has also improved.
Further, when the height is adjusted, the grip (14) does not move up and down, and only the pipe material (16) moves up and down, so there is no change in appearance and the design is excellent.
[0020]
In addition, a screw may be engraved on the upper end of the screw rod (12) instead of the female screw (12b), and a female screw cylinder integrated with the cap (22) may be screwed into the screw.
Moreover, although this embodiment demonstrated the case where this invention was applied to the expansion / contraction apparatus of the support | pillar which supports an exhibition panel etc., it is not restricted to this, For example, it can apply also to the expansion / contraction apparatus of the leg part of a table.
[0021]
【The invention's effect】
The height of the column can be expanded and contracted steplessly, and when expanding and contracting, it is excellent in operability because it is only necessary to rotate the grip.
Moreover, since there are no protrusions etc. to the outside and there is no change in appearance during expansion and contraction, the design is excellent and the aesthetic appearance is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a column provided with an embodiment of a telescopic device of the present invention.
FIG. 2 is a longitudinal sectional front view showing a main part of the telescopic device in FIG.
3 is a perspective view showing a main part of the telescopic device in FIG. 1 exposed. FIG.
4 is a cross-sectional plan view taken along line IV-IV in FIG. 2. FIG.
FIG. 5 is a perspective view showing an example in which a display panel is supported using a conventional support column.
6 is a perspective view of a main part of the column in FIG. 5. FIG.
[Explanation of symbols]
(10) Base
(10a) Base
(10b) Cylindrical part
(12) Raden
(12a) Male thread
(12b) Female thread
(14) Grip
(14a) Vertical groove
(16) Pipe material
(18) Support stand
(19) Set screw
(20) Adjustment nut
(20a) Engaging protrusion
(21) Guide tube
(22) Cap
(22a) Male thread 杆

Claims (1)

The base mounted on the floor is erected with a screw having a threaded portion at the lower and upper ends, and an adjustment nut is screwed into the screw at the lower end of the screw, and a pipe material is inserted into the screw. The lower end portion of the pipe material is supported by the adjusting nut, and a cap is screwed onto the screw portion at the upper end of the screw so that the lower surface of the cap is brought into contact with the upper end portion of the pipe material. By holding the pipe material between the adjustment nut and the cap, and rotating the adjustment nut and the cap, the pipe material can be raised and lowered with respect to the screw and the height can be adjusted. A grip having a shape is rotatably fitted to the screw and pipe member into which the adjustment nut is screwed, and an outer peripheral portion of the rotation adjustment nut is inserted into a vertical groove recessed in the inner peripheral surface of the grip. Suddenly The adjusting nut can be rotated through the engaging protrusion by engaging the engaging protrusion and rotating the grip, and the engaging protrusion is guided along the longitudinal groove. Accordingly, the telescopic device such as a support post is characterized in that the adjusting nut is allowed to move up and down without moving up and down.

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