JPH081647U - Height adjustment device for tables - Google Patents

Abstract

(57) [Summary] [Purpose] The height adjuster fitted to the lower end of the rectangular rod in a table or the like should not rattle or fall off. [Structure] The leg rod 1 has a rectangular tubular shape having vertical recessed grooves 2 on both sides, and an adjusting tool 3 fitted to the lower end of the leg rod 1 is screwed by a screw rod 13 standing from a leg seat 12. It has a vertical screw hole 6 into which it can be inserted, and a flange 8 at the lower end, and when the adjusting tool 3 is fitted to the leg rod, it is fitted into the groove 2 on both sides of the upper surface of the flange 8. A possible upward facing engagement piece 9 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a height adjusting device having a good appearance for adjusting the height and level of a table or the like.

[0002]

[Prior art]

 A conventional height adjusting device for adjusting the height and the horizontal of a table or the like is usually such that an adjusting tool having a vertical screw hole at the center is fitted to the lower end of a rectangular rod, and a screw hole is formed. A screw rod projecting from the center of the upper surface of the disc-shaped leg seat is screwed into it and the leg seat is rotated to adjust the height (see Japanese Utility Model Laid-Open No. 48-10759).

[0003]

[Problems to be solved by the device]

 However, in the conventional device, due to the load transmitted from the adjuster, the lower end opening of the leg rod may be widened or the adjuster may be contracted due to the load transmitted from the adjuster, and the adjuster may fall off the leg rod.

An object of the present invention is to provide a height adjusting device which does not cause such inconvenience and has a good appearance.

[0005]

[Means for Solving the Problems]

 According to the present invention, the lower end of a rectangular rod having a vertical groove on both sides faces upward and downward, and the lower end has a flange that abuts against the lower end of the rod. On both sides of the upper surface, an upward engaging piece that can engage with the groove is projected, and an adjusting tool having a vertical screw hole is inserted from the lower surface of the flange. The above-mentioned problem is solved by inserting a screw rod standing upright in the center of the upper surface of the disk-shaped leg seat into the screw hole.

[0006]

In the device of the present invention, the height of the table or the like is adjusted by rotating the leg seat as in the conventional device.

[0007] By engaging the upward engaging pieces projecting on both sides of the upper surface of the flange of the adjuster with the concave grooves formed on the both sides of the leg rod, the device can be used for a long time and the inside of the leg rod can be protected. Even if the adjustment tool is loosened, the engaging pieces that sandwich the leg rod from both sides prevent the adjustment tool from rattling and prevent it from falling off the leg rod.

[0008]

【Example】

 The drawings show an embodiment of the present invention, in which the left and right side surfaces (hereinafter, the left and right directions refer to the drawings) of the substantially rod-shaped leg rod (1) of the table (not shown) have the entire height. A vertical recessed groove (2) (2) is formed thereover, and an adjusting tool (3) made of synthetic resin is fitted on the lower end of the leg rod (1).

The adjusting tool (3) has the same planar shape as that of the outer surface of the leg rod (1), and the planar shape of the adjusting member (3) has the same shape as the inner surface of the leg rod (1). In addition, the bottomed cylindrical portion (4), which is slightly smaller than that, is erected. A columnar portion (5) is erected at a position slightly to the right of the inner center of the tubular portion (4), and a screw hole (6) is formed at the center of the columnar portion (5).

On the outer peripheral surface of the tubular portion (4), a plurality of protruding ridges (7) directed in the up-down direction are provided in a protruding manner.

Engaging pieces (9) and (9) facing in the front-rear direction are provided on both left and right sides of the upper surface of the flange (8) in a protruding manner.

At the left end of the lower surface of the flange (8), an inner surface is curved in an arc shape around the screw hole (6), and a protective edge (10) which is open at the screw hole (6) side is vertically provided. . On the front and rear outer peripheral surfaces of the protective edge (10), a plurality of small ridges (11) directed in the up-down direction are provided in a protruding manner.

The tubular portion (4) is fitted into the lower end of the leg rod (1) so that the protrusions (7) and (7) on the outer peripheral surface are pressed against the inner surface of the leg rod (1) and the flange (8) ) Is brought into contact with the lower end surface of the leg rod (1) and each engaging piece (9) is engaged with the lower end of the groove (2) of the leg rod (1), so that the adjusting tool (3) is retained. The guard edge (10) is outwardly mounted on the leg rod (1) in a non-rotatable manner.

A screw rod (13) which is erected on the center of the upper surface of a horizontal disc-shaped leg seat (12) is screwed into the screw hole (6) from below. The radius of the leg seat (12) is smaller than the inner diameter of the protective edge (10) centered on the screw hole (6), and its thickness is slightly thicker than the height of the protective edge (10). There is.

In the above-mentioned device of the present invention, the height of the table is adjusted by rotating the leg seat (12).

Further, the engaging pieces (9) (9) of the adjusting tool (3) which engage with the concave grooves (2) on both sides of the leg rod (1) hold the leg rod (1) from both sides. Prevents rattling of the adjustment tool (3) and falling off of the leg rod (1) due to long-term use of this device.

[0017]

[Effect of device]

 (a) Since the engaging pieces on both sides of the adjuster engage with the concave grooves on both sides of the leg rod to clamp the leg rod from both sides, the adjuster can be used even if this device is used for a long period of time. It does not rattle within the rod and fall off.

(B) When the table or the like is used or moved, it comes into contact with the inner surface of the leg rod against a horizontal rotational force applied between the leg rod and the adjuster or a twisting force from the front, rear, left and right directions. In addition to the resistance force with the outer side surface of the adjuster, the resistance force due to the engagement between the engaging pieces on both sides of the upper surface of the flange and the outer side surface of the leg rod acts, so compared with the conventional device, It is possible to maintain the mounting condition with the adjustment tool extremely firmly.

(C) Since the engaging pieces of the adjuster are engaged with the concave grooves on both side surfaces of the leg rod, the corners of the leg rod are engaged with each other against the impact on the adjuster in use. It protects the pieces and prevents the engagement pieces from breaking.

[Brief description of drawings]

FIG. 1 is an exploded front view of a central longitudinal section of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a view taken along the line BB of FIG.

FIG. 4 is a view taken along line CC of FIG. 1;

[Explanation of symbols]

 (1) Leg rod (2) Groove (3) Adjuster (4) Cylindrical part (5) Columnar part (6) Screw hole (7) Projection (8) Flange (9) Engagement piece (10) Protection Edge (11) Small ridge (12) Leg seat (13) Screw rod

Claims (1)

[Scope of utility model registration request] 1. A flanged rod having a rectangular tubular shape with vertical grooves formed on both side faces, has a flange facing the up-down direction at its lower end and abutting the lower end of said rod, and the upper surface of this flange. An adjusting tool is provided on both sides of which an upward engaging piece that can be engaged with the concave groove is projected, and a vertical screw hole is drilled from the lower surface of the flange. A height adjusting device for a table or the like, characterized in that a screw rod erected at the center of the upper surface of a disc-shaped leg seat is screwed into the.