JPS5915930Y2 - folding desk - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a folding desk in which a desk top plate is provided on one side of the armrest desk and is folded and stored along the side surface of the armrest desk.

Conventionally, this type of folding machine was developed using Utility Model 15744 (1983).
The one disclosed in Publication No. 2 is known, but this has the disadvantage that the leg folding top plate cannot be folded along the side of the pivot table unless the top plate support legs are made into a telescoping structure. Since no locking device was provided for the folding top, there was a problem in that the folding legs and the folding top would swing when the desk was moved in the folded state.

This idea was made to solve the above-mentioned conventional drawbacks.By devising the folding structure of the top plate support legs, the folding legs of the top plate can be placed along the side of the desk without having to make telescopic legs like in the past. By making it easy to fold and installing a specially designed locking mechanism, it ensures that the top support legs can be latched when the desk is in use, while also ensuring that the legs and top plate are latched when folded. The purpose of the present invention is to provide a folding desk in which the folding legs and the folding top plate are prevented from swinging excessively when the desk is moved.

Below, the structure of the folding desk of this invention will be explained according to the drawings. A desk top plate 3 that can be folded along the side of a armrest desk whose part is attached with a hinge 4, and the other end of this desk top plate 3 has a housing-like structure in which the other end of the desk top plate 3 is fixed to the central lower side surface part and protrudes downward and the inner side is open. A leg mounting bracket 5 and a bracket bracket 6 projecting outward at right angles from the upper end thereof are provided along the back side of the top plate with protruding parts 6 a and 6 b of the bracket bracket 6 pivoted to the leg mounting bracket 5 by a shaft 8. It is equipped with foldable top support legs 7 and a locking mechanism 10 installed on the leg mounting bracket 5.

The dimensions of this folding desk are as follows: L is the horizontal length of the desk top 3, T is the thickness of the top, H is the height from the floor to the top of the desk top 3, is H1 is the height from the bottom of the desk top 3 to the legs. The distance to the fulcrum center of the pivot shaft 8 is D, the distance from the fulcrum center of the leg pivot shaft 8 to the inner surface of the top support leg 7 is K, and the cross-sectional width dimension of the top support leg 7 is E.
When the distance between the folding desk side and the folding top 3 when the top is folded is P, and the height from the foot mounting surface 1a of the armrest 1 to the top hinge fulcrum 4a is Y, then Y<L. ≦H-T...
...(1), D-=K...(2), E≦P
(3) The dimensions are set to satisfy the above formulas (1), (2), and (3).

The locking mechanism 10 includes a protruding portion 6a of the bracket metal fitting 6;
6b is provided with a notch hole 12 for lifting the leg that opens downward and is provided directly below the insertion hole 11 of the leg pivot shaft 8, and a bracket protrusion that is displaced within an angular range of 90 degrees with respect to the notch hole 12. Notch holes 13 for folding and hanging the legs that open laterally provided at the ends of the legs 6a and 6b, and the side plate portions 5a of the leg mounting bracket 5.
, 5b, which is located directly below the leg pivot shaft insertion hole 14, and is rotatable outward through a vertically elongated hole 15 located directly below the leg pivot shaft insertion hole 14, and a lower notch 16 of the end plate 5C in the leg mount 5. like pin 17
The handle, which has a folding latch edge 18 at its lower end supported by a rotating lever 19, and side plates 19a, 19
The upper part of the vertically elongated hole 15 and the bracket notch hole 12 are shown in b.
．． A horizontally long hole 20 is drilled so as to coaxially match one of the holes 13, and the leg is attached by inserting the vertically and horizontally long hole 15.20 and engaging one of the bracket cutout holes 12.13. A moving shaft 21 for hanging a leg horizontally suspended in the metal fitting 5 parallel to the leg pivot shaft 8, a spring 22 that biases the moving shaft 21 in the direction of the leg pivot shaft 8, and a leg folding top plate. When folding the sleeve desk 1 along the side of No. 3, the above-mentioned handle is attached to the V-shaped inclined surface 2 which the lower end latching edge 18 of the rotating lever 19 crosses over and engages with, as shown in FIG.
3 and a latch fitting 24 attached to the lower surface of the sleeve desk 1.

In the figure, 27 indicates a handle provided on the top support leg 7.

In addition, the above-mentioned handhold is connected to the rotating lever 19 on both side plates 5 of the leg mounting bracket.
It is attached as shown in FIGS. 4 and 5 with pins 17 fitted into the lower horizontal holes 25 of the vertically long holes 15 of a and 5 b,
The upper end of this lever has a stopper protruding edge 26 that engages with the inner side of the upper edge of the end plate notch 16 of the leg mounting bracket 5 as shown in FIG.
is provided.

Although the spring 22 is a C-shaped spring as shown in FIG. 4 suspended between the leg pivot shaft 8 and the moving shaft 21, a coil spring or the like may be used instead.

Figures 1 to 5 show the desk in use, with the desk top 3 supported by the legs 7 in a horizontally open state. When engaged, the top plate support legs 7 are latched and held in the upright state.

In this state, when the hand grip rotates the rotating lever 19 in the direction of arrow A in FIG.
Here, when the top plate support leg 7 is folded and rotated toward the top plate 3 side using the shaft 8 as a fulcrum and the top plate 3 is rotated downward, the top plate support leg 7 is attached to the back surface of the top plate 3. The top plate 3 is folded close to each other so as to be parallel to each other, and the top plate 3 is folded perpendicularly to the side surface of the armrest desk 1 as shown in FIGS. 13, a spring-biased moving shaft 21 is engaged with the lever 13 as shown in FIG. It is latched by crossing over and engaging as shown in Fig. 10.

Therefore, in this state, the folding top plate 3 and the folding legs 7 are prevented from swinging, which is convenient when moving the entire folding desk by holding the sleeve desk 1.

In addition, although the above embodiment described the case where the desk top 3 was provided on one side (left side) of the armchair 1, the same foldable desk top 3 and its supporting leg structure were installed on both the left and right sides of the armchair 1. Alternatively, mounting holes for the hinges 4 and the latches 24 may be symmetrically drilled on both sides of the armrest 1, and the desk top 3 can be optionally mounted on the right or left side of the armchair 1. It may be possible to change it depending on the season.

Since the folding desk of this invention is as described above, it has the following effects.

(1) The upper end attachment part for the mounting bracket of the top plate support leg is formed with a bracket metal fitting that protrudes outward from the support leg and is pivotally attached to both side plate parts of the leg attachment bracket, so that the desk top plate is Even if the horizontal length is Y<L≦H-T, the top plate support legs are moved back so as not to protrude beyond the hinge side edge of the top plate, and the top plate support legs are placed along the back side of the top plate as shown in Fig. 10. Therefore, the support leg can be implemented without having to have a conventional folding structure.

(2) Furthermore, since the folding desk of this invention is equipped with the above-mentioned specially structured locking mechanism on the leg mounting brackets, the top support legs can be reliably latched in the standing state when the desk is in use. The legs and top plate can be reliably latched when the desk is folded, and the problem of the folding legs and top plate swinging when the desk is moved can be solved.

(3) When the above-mentioned locking mechanism is installed on the leg mounting bracket, the desk top plate and the legs can be easily folded by operating the rotating lever.

[Brief explanation of the drawing]

Figure 1 is a side view of an embodiment of the desk in use, Figure 2 is its front view, Figure 3 is its bottom view, and Figure 4 is an enlarged view of the section taken along line A-A in Figure 1. Cross-sectional view, Figure 5 is B in Figure 4
6 is an exploded perspective view of the leg attachment part, 7 is a sectional view of the hinge, 8 is a front view of the folding desk, 9 is
The figure is a bottom view, and FIG. 10 is an enlarged sectional view taken along the line CC in FIG. 9. 1...Sleeve desk, 2...Legs, 3...
・Desk top plate, 4...Hinge, 5...Leg mounting bracket, 5a, 5b...Both side plates, 5C...
... End plate part, 6 ... Bracket fitting, 6 a
, 6 b... Protrusion, 7... Top plate support leg, 8... Leg pivot shaft, 10... Lock mechanism, 11... ...Shaft insertion hole, 12...Notch hole for leg standing latching, 13...Notch hole for leg folding latching, 14...Shaft insertion hole, 15...
Vertical hole, 16... Notch, 17... Lever mounting pin, 18... Folding latching edge, 19.
...The handholds are rotating levers, 19 a, 19 b.
...Lever side plate part, 20...Horizontal hole,
21...Moving axis, 22...Spring, 23...■-shaped inclined surface, 24...Latching fitting.

Claims (1)

[Scope of utility model registration request] A free-standing armchair with multiple legs on the lower side, a desk top plate that can be folded along the side of the armchair with one end lower part attached to the upper part of the armrest with a hinge, and this desk top. At the other end of the plate, there is a leg mounting bracket having a box-like configuration with an opening on the inner surface, which is fixed to the center lower side surface part of the center of the plate, and which is fixed to the central lower side surface part, and a bracket metal fitting which projects outwardly at the upper end part, and the protruding part of the bracket metal fitting is provided. It is equipped with a top plate support leg that can be folded along the back side of the top plate that is pivotally connected to the leg mounting bracket, and a locking mechanism that is installed on the leg mounting bracket, and this locking mechanism is installed at a position directly below the leg pivot axis of the bracket metal fitting. A notch hole for hanging the leg standing up, a notch hole for hanging the leg that is provided at the tip of the bracket protrusion and displaced within an angular range of 90 degrees with respect to this notch hole, and a notch hole for hanging the leg when folded, and a notch hole for hanging the leg when folded at the tip of the bracket protrusion, and on both side plates of the leg mounting bracket. A vertically elongated hole located directly below the leg pivot shaft insertion hole and a pin supported in the lower end of the leg mounting bracket so that it can rotate outwardly through the notch below the end plate. The handhold with an edge has a rotating lever, a horizontally long hole provided on both side plates of the lever so as to be coaxially aligned with the upper part of the vertically elongated hole and one of the bracket cutout holes, and the vertically and horizontally elongated hole. A moving shaft for hanging a leg, which is inserted into the bracket and engaged with one of the notch holes of the bracket, and suspended horizontally in the leg mounting bracket parallel to the leg pivot shaft, and this moving shaft is connected to the leg pivot shaft. When the leg-folding top plate is folded along the side of the armrest desk, the handle has a ■-shaped inclined surface that the lower end of the rotation lever crosses over and engages with. A folding desk characterized by comprising a latch fitting attached to a lower surface part.