JP2000316639A - Structure of curved edge of top - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a curved edge to form a plane top having partially a curved portion of a steel plate. SOLUTION: A bent portion 8 facing downward is formed at an edge including the curved portion of a body steel plate 4 forming the entire shape of a top, and a bent portion 9 facing upward is formed at an edge including a steel edge reinforcing member 5 arranged below the body steel plate in opposition to the bent portion 8 of the body steel plate 4. Both ends of a reinforcing member 10 formed by bending perpendicularly both ends of a slender steel strip are fastened in the vicinities of both ends between the body steel plate 4 and the edge reinforcing member 5, and a soft edge member 11 is annexed in combination with a curved portion 2, by engaging both bent portions 8 and 9 with engagement grooves 11 a provided in the upper and lower portions of the reverse of the soft edge member 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat top plate having a curved portion in a desk or table (hereinafter referred to as an R-shaped top plate), and more particularly to such a top plate. It relates to a curved edge structure.

[0002]

2. Description of the Related Art Conventionally, all top plates having an R shape have been made of wood. If it is made of wood, it is easy to process the R-shaped portion, that is, the curved portion, and it is possible to attach a soft edge material by forming a groove in the edge portion.

[0003]

However, if the top plate has a large area, it may bend when a heavy object is placed thereon. In addition, the weight of the desk becomes heavy, which makes handling not only difficult when moving, but also expensive. In addition, when attaching the soft edge material, the groove is carved into the curved part, making it difficult to process, and the groove position and groove depth are not constant, so that the gap between the soft edge material and the edge of the top plate And gaps are likely to occur.

SUMMARY OF THE INVENTION [0004] In view of the above problems, an object of the present invention is to provide a curved edge structure for enabling a flat top plate having a curved portion to be formed of a steel plate.

[0005]

According to the present invention, the above-mentioned problem is solved as follows. (1) In a curved edge structure of a top plate having a planar shape having a curved portion in part, a bent portion facing downward is provided on an edge portion including the curved portion of a main body steel plate constituting an entire shape of the top plate. Forming a bent portion facing upward and facing the bent portion on an edge portion including a curved portion of a steel edge reinforcing member disposed below the main body steel plate; In the vicinity of both edges between the steel plate and the edge reinforcing material, the both ends of the elongated steel piece are bent at right angles and the both ends of the reinforcing material are fixed, and soft edge materials are provided on the upper and lower portions of the back surface. The bent portions are engaged with the engagement grooves, and the bent portions are provided together with the bent portions.

(2) In the above item (1), a linear reinforcing member formed by bending both ends of an elongated steel piece at a right angle is contacted with the edge at almost the center of the curved portion so as to contact the edge of the main steel plate. And the edge reinforcement member.

(3) In the above item (1) or (2), it is assumed that the reinforcing member is bent into a right-angled Z-shape.

(4) In any one of the above items (1) to (3), a projection is provided on the back surface of the soft rim to contact the front surface of the reinforcing material.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a desk having a top plate having an R shape. The top plate (1) of the desk (A) has a curved portion (2) in which a right side portion of a front edge thereof is bent and protrudes forward to form a protruding portion (3) suitable for installation of a personal computer or the like. I have.

The present invention relates to a top plate having such an R shape.
(1) relates to a curved edge structure for making a steel plate, and FIG. 2 shows a back surface of the top plate (1). The top plate (1) is provided with an edge reinforcing material (5) at the front edge on the back surface (shown in FIG. 2) of the large main body steel plate (4) serving as the surface.
An intermediate reinforcing member (6) (6) and an edge reinforcing member (7) at the rear edge are attached.

The main body steel plate (4) has a reinforcing structure formed by bending straight side edges and front and rear edges thereof.
The leading edge including (2) is bent downward at a right angle so as to form a curved shape by roll forming, as shown by reference numeral (8) in FIG. The width of the bent portion (8) is, for example, about 4 mm.

Edge reinforcement (7) at rear edge and intermediate reinforcement
(6) is a steel plate having a length substantially equal to the left and right lengths of the top plate (1) is bent into a U-shaped cross section, and the end of the U-shaped arm is further bent at a right angle to form a main body. It is fixed to the back surface of the steel plate (4) by, for example, spot welding.

The edge reinforcing material (5) at the front edge has a shape corresponding to the curved shape of the front edge of the main steel plate (4) including the curved portion (2). ) Is the main body steel plate mentioned above
Like the front edge of (4), it is bent upward at right angles by roll forming (see FIG. 3). The width of the bent portion (9) is, for example, about 4 mm.

A reinforcing member (10) is attached between the front portion of the edge reinforcing member (5) at the front edge and the front edge of the main body steel plate (4) above it. The reinforcing material (10) is formed by bending a side end of an elongated linear steel slab at a right angle to have, for example, a right-angled Z-shaped cross-sectional shape (see FIG. 3).
Upper surface of edge reinforcement (5) and lower surface (back surface) of main body steel plate (4)
, For example, by spot welding. In some cases, the cross-sectional shape of the reinforcing member (10) may be U-shaped.

As shown in FIG. 2, the reinforcing member (10) is
In the straight portion at the front edge of (1), the portion is arranged so as to directly contact the straight line. The curved portion (2) is arranged so as to be in direct contact with the curve at the center thereof as much as possible and to minimize the separation distance at the portion away from the curve.

As shown in FIG. 3, a soft edge member (11) is attached to the front edge on which the reinforcing member (10) is disposed as described above. Upward and downward engaging grooves (11a) are formed in the upper and lower portions of the back surface of the soft edge material (11), respectively, and these engaging grooves (11
By engaging the downwardly bent portion (8) of the main body steel plate (4) and the upwardly bent portion (9) of the edge reinforcing member (5) with the soft steel edge member (11), To the top plate (1). At this time,
It is preferable that the protrusion (11b) on the back surface of the soft edge member (11) comes into contact with the front surface of the reinforcing member (10).

FIG. 4 is a sectional view of a modification of the embodiment shown in FIG. As shown in FIG. 4, by placing the upwardly bent portion (9) of the edge reinforcing member (5) ahead of the downwardly bent portion (8) of the main body steel plate (4), a soft edge material is provided. The deformation and detachment of the soft edge material (11) due to the load from above applied to the (11) can be effectively prevented.

In the top plate (1) of the modified example shown in FIG.
The curved portion (2) at the front edge has a quadrant shape, so that the edge reinforcement (5) at the front edge has a right angle.
The intermediate reinforcing members (6) are provided at right angles by two, and similarly, two edge reinforcing members (7) at the rear edge are disposed at right angles. However, the arrangement of the reinforcing member (10) is the same as in the above-described embodiment.

[0019]

According to the first aspect of the present invention, the top plate having the R-shaped portion can be formed of a steel plate, and the strength can be increased by reinforcement with a reinforcing material while increasing the area of the top plate. Since it does not bend and the top plate is formed of a thin steel plate, the weight and cost of the desk can be reduced. Further, it is not necessary to use an adhesive for attaching the soft edge material, and it is possible to eliminate the displacement and the generation of the gap.

According to the second aspect of the present invention, it is possible to maximize the reinforcement of the curved portion by minimizing the separation distance of the portion where the reinforcing member is separated from the curved portion.

According to the third aspect of the present invention, the front bent end of the reinforcing member is brought into contact with the inside of the downward bent portion of the main body steel plate or the upward bent portion of the edge reinforcing member, The reinforcement can be positioned accurately.

According to the fourth aspect of the present invention, the rearward displacement or deformation of the soft rim can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a desk using a top plate having a curved edge structure according to the present invention.

FIG. 2 is a rear view of the top plate of the desk shown in FIG. 1;

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a sectional view of a modification of the embodiment shown in FIG. 3;

FIG. 5 is a rear view showing a modification of the top plate.

[Explanation of symbols]

 (A) Desk (1) Top plate (2) Curved portion (3) Projecting portion (4) Main body steel plate (5) Edge reinforcement at front edge (6) Intermediate reinforcement (7) Edge at rear edge Reinforcement (8) (9) Bend (10) Reinforcement (11) Soft rim (11a) Engagement groove (11b) Projection

Claims (4)

[Claims] 1. A curved edge structure of a top plate having a planar shape partially having a curved portion, wherein an edge including the curved portion of a main body steel plate constituting an overall shape of the top plate is bent downward. Forming a bent portion facing the bent portion at an edge including a curved portion of a steel edge reinforcing member disposed below the main body steel plate, In the vicinity of both edges between the main body steel plate and the edge reinforcing material, the both ends of the elongated steel piece are bent at right angles, and both ends of the reinforcing material are fixed, and the soft edge material is attached to the upper and lower portions of the back surface. The bent edge portion structure is characterized in that the both bent portions are engaged with the engagement grooves provided in the above, and the bent edge portion is additionally provided including the bent portion. 2. A straight reinforcing material formed by bending both ends of a long and thin steel piece at right angles, and in a curved portion, contacting the edge at substantially the center of the bent portion, so that the reinforcing member is disposed between the main body steel plate and the edge reinforcing member. The curved edge structure according to claim 1, wherein the curved edge structure is disposed on the curved edge. 3. The curved edge structure according to claim 1, wherein the reinforcing member is bent into a right-angled Z-shape. 4. The curved edge structure according to claim 1, wherein a projection is provided on a back surface of the soft edge material to contact a front surface of the reinforcing material.