JP2758358B2 - Structure to prevent the desk from falling forward - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a desk from falling forward provided on a desk drawer.

[0002]

2. Description of the Related Art As shown in FIG. 5, there is a desk 62 for accommodating or pulling out a sleeve desk 60 according to a use form. Sleeve desk 6
A caster 66 is attached to the lower edge of the projection 0 so as to protrude therefrom. The caster 66 supports the load applied to the top plate 64 so that the sleeve desk 60 does not fall over, and also allows the sleeve desk 60 to enter and exit smoothly. Considered (Jun 40-17819)
Reference).

[0003] By the way, drawers are also provided in a multi-stage on a desk normally used, and the drawer provided at the bottom is made large in size for storing documents and the like (see FIG. 2).
If a large number of documents are stored in such a large drawer, the load may be concentrated on the front side of the desk when the drawer is pulled out, and the desk may fall forward.

For this reason, there is a method of attaching a conventional caster 66 to the lower part of the tip of a large drawer to prevent the desk from falling forward. However, it is not easy to attach the caster 66 and the drawer is stored in a retracted state. And the casters 66 are exposed, which impairs the appearance. In addition, casters 66
May protrude from the lower end of the drawer and form a large gap with the floor surface, so that the toes of the feet may be caught on the casters 66 or other office tools may collide with the casters 66 and damage the casters 66.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a structure for preventing a desk from falling forward which is easy to attach, has good appearance, and is not easily damaged.

[0006]

According to a first aspect of the present invention, there is provided a desk tilting prevention structure provided in a lowermost drawer of a desk, wherein a lower edge of a front plate of the drawer is covered. It is arranged opposite to the inside of the cushioning member that
A pair of shaft plates, and the desk pivotally supported so as to be detachable from the shaft plates.
And a roller that touches the ground surface on which it is placed .

According to a second aspect of the present invention, there is provided a desk
The desk's front-end prevention structure, which is provided in the bottom drawer of the
The lower edge of the front plate attached to the lower edge of the front plate of the drawer.
The cushioning member to be covered, facing the inside of the cushioning member
A pair of standing and elastically contactable / separable shaft plates;
It is guarded by materials and can be grounded on the floor where the desk is placed.
A roller pivotally supported by a shaft plate, and
And a bearing portion capable of supporting the outer peripheral surface of the roller .

[0008]

[0009]

In the structure for preventing the desk from falling forward according to the first aspect of the invention, a pair of shafts are provided inside the cushioning member that covers the lower edge of the front plate of the drawer.
The plates are arranged facing each other. This shaft plate is elastically movable
Function and the roller is supported so that it can be
Replacement of easily worn rollers pushes a pair of shaft plates elastically.
It can be easily done by expanding. Also, the shaft plate
The drawer is located inside the member so that the drawer
Even if a collision occurs, the impact energy is absorbed by the cushioning member.
You. For this reason, the roller supported by the shaft plate may be damaged.
There is no. In addition, this roller touches the floor where the desk is placed
When the drawer is withdrawn,
To prevent the desk from falling forward by supporting
Smooth entry and exit operations.

In the structure for preventing the desk from falling forward according to claim 2,
Rollers supported by the shaft plate touched the floor where the desk is placed
It is guarded by the cushioning member in the state. Thus, low
The gap between the cushioning member and the floor surface
By minimizing the gap, the toes etc. of the feet
No more hanging. Also, heavy objects are stored in the drawer.
The roller is pushed up by the reaction force from the floor.
At this time, the shaft plate expands so that the outer peripheral surface of the roller is located between the shaft plates.
Is supported by the bearing part arranged at Thus, the roller
Since a large load is not applied to the rotating shaft of
The shaft is not damaged.

[0011]

Since the roller, shaft plate and bearing are provided integrally with the cushioning member, a structure for preventing the desk from falling forward can be constructed simply by attaching the cushioning member to the lower edge of the drawer.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 4, the desk folding structure according to the present embodiment includes a bumper 14 as a cushioning member attached to a drawer 12 at the bottom of the desk 10. FIG.

The bumper 14 has a substantially L-shaped cross section, and is provided with a buffer plate 16 which is flush with the front plate 12A of the drawer 12. Box portions 18 for reinforcement are formed at both ends of the buffer plate 16. The corner portion 18A of the box portion 18 is rounded to ensure user safety.

At the upper edge of the buffer plate 16, a plate-like top 20 is formed which extends at right angles to the drawer 12 and is connected to both ends of the buffer plate 16. From this top part 20, the buffer plate 1
The mounting plate 22 extending between the box portions 18 provided on both sides of the mounting member 6 bulges upward. The step 24 between the mounting plate 22 and the top 20 is adapted to engage with the corner of the front plate 12A of the drawer 12.

The mounting plate 22 is provided with positioning projections 26 to be inserted into mounting holes (not shown) formed in the lower surface of the front plate 12A, and screw holes 28 through which fixing screws are inserted. ing. Further, a plate-like stay 30 extending from the mounting plate 22 to the buffer plate 16 is provided inside the bumper 14. Thereby, the buffer plate 16 has a predetermined impact strength.

On the other hand, a rectangular box 32 is formed at the center of the bumper 14 with the buffer plate 16 as a component. Two slits 36 are cut in parallel in the vertical direction in the side plate 34 facing the box body 32.
The part cut by the slit 36 is the shaft plate 3
8 is set. By forming the shaft plate 38 in this manner, its free end can be elastically tilted.

The free end of the shaft plate 38 protrudes from the upper part of the box 32, that is, the lower edge of the buffer plate 16.
A shaft hole 40 extends through the free end of the shaft plate 38. A boss portion 42 is formed on the outer surface of the free end of the shaft plate 38 coaxially with the shaft hole 40 to reinforce the shaft hole 40.

A roller 44 is supported by the shaft hole 40. A disk 46 is provided at the center of the roller 44. From the outer peripheral edge of the disk 46, a cylindrical body 48 as a rotating surface extends in both directions in the thickness direction of the disk 46. By configuring the hollow roller 44 in this manner, the molding material can be reduced.

A cylindrical body 50 having a diameter larger than the diameter of the shaft hole 40 is provided protruding from the center of the disk 46 coaxially with the cylindrical body 48. A rotary shaft 52 that is supported by the shaft hole 40 from the end face of the columnar body 50 projects coaxially with the columnar body 50. The rotating shaft 52 has a size that can be inserted into the shaft hole 40, and the tip end surface is cut obliquely from the center to the outer peripheral surface to form a guide surface 52A. This guide surface 5
2A is pressed against the inside of the shaft plate 38,
By elastically expanding the roller 8, the roller 44 can be easily attached.

Three support plates 54 are provided upright from the bottom of the box 32 at a predetermined interval. The tip of the support plate 54 is cut in an arc shape so as to support the outer peripheral surface of the cylindrical body 48 of the roller 44 supported by the shaft plate 38. As a result, even if a large reaction force acts on the roller 44 from the floor surface, the shaft plate 38 opens slightly outward to push up the rotary shaft 52 and receive the cylindrical body 48 with the support plate 54, so that the rotary shaft 5
No large force acts on 2.

Next, the function of the structure for preventing the desk from falling forward according to the present embodiment will be described. In this embodiment, since the roller 44 is provided integrally with the bumper 14, the desk 10 can be prevented from falling forward only by attaching the bumper 14 to the lower edge of the drawer 12.

When the drawer 12 is pulled out, the rollers 44 support the front surface of the drawer 12 while rolling on the floor.
The drawer 12 can be moved in and out smoothly. Roller 4
4 is disposed inside the bumper 14, even if an obstacle collides with the buffer plate 16 of the bumper 14, the impact energy is absorbed without being transmitted to the roller 44, and as a result, the roller 44 is damaged. do not do. Further, since the roller 44 is covered by the bumper 14, it is difficult to see from the outside, the appearance of the desk 10 is improved, and the toe of the foot is not caught.

Further, the roller 4 is repeatedly moved in and out.
Even if it becomes necessary to replace the roller 4, the roller 44 can be easily removed from the shaft plate 38 by pushing and expanding the shaft plate 38 in a direction away from each other, and further, a guide surface 52A provided on the rotating shaft 52. The roller 44 can be easily mounted by pressing the roller 44 against the inner surface of the shaft plate 38.

When a heavy object is stored in the drawer 12, the roller 44 is pushed up by a reaction force from the floor. At this time, the shaft plate expands, and the cylindrical body 48 of the roller 44 is supported by the support plate 54 disposed between the shaft plates 38. Therefore, since a large load is not applied to the rotating shaft 52, the rotating shaft 52 is not damaged.

[0026]

According to the present invention, since the roller is easily mounted and has a good appearance, the roller is not damaged even when a large load is applied.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a desk before a desk forward prevention structure according to the embodiment is applied.

FIG. 2 is a perspective view showing the desk after the desk forward tilt prevention structure according to the embodiment is applied.

FIG. 3 is a perspective view of a bumper with rollers constituting the structure for preventing the desk from falling forward according to the embodiment as viewed from the front side.

FIG. 4 is a perspective view of a bumper with a roller, which constitutes the structure for preventing the desk from falling forward according to the embodiment, as viewed from the back side.

FIG. 5 is a perspective view showing a structure for preventing a desk from falling forward.

[Explanation of symbols]

 12 Drawer 14 Bumper (buffer member) 38 Shaft plate 44 Roller 54 Bearing plate (bearing part)

────────────────────────────────────────────────── (5) References JP-A-4-109908 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47B 17/00-25/00 A47B 88 / 00

Claims (2)

(57) [Claims] 1. A desk forward tilt prevention structure provided in a lowermost drawer of a desk, wherein the desk is disposed to face an inside of a cushioning member which covers a lower edge of a front plate of the drawer , and can be elastically contacted and separated.
A pair of shaft plates, and the desk pivotally supported so as to be detachable from the shaft plates.
A front-end prevention structure for a desk, comprising: a roller that is in contact with a floor placed on the floor . 2. A cushioning member attached to a lower edge of a front plate of the drawer, the cushioning member being attached to a lower edge of a front plate of the drawer, the buffer member being provided on a lowermost drawer of the desk, and an inside of the cushioning member. A pair of shaft plates which are erected and elastically contactable and detachable from each other, a roller which is guarded by the cushioning member and which is pivotally supported by the shaft plate so as to be able to touch the floor on which the desk is placed; and A support portion disposed between the plates and capable of supporting the outer peripheral surface of the roller.