JPH11318575A - Desk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent strong collision to a sliding member by providing a spring member energizing the rotary shaft of a rotary damper connected to a link member end part at the time of erecting up a top plate. SOLUTION: The rotary shaft 72 is provided at the rotary damper 7 arranged by fixing a main body case 71 closer to the front side of the side part of the sliding member 5. The link member 6 is formed in the shape of L and when the top plate 3 is rotated forward, one end part 6a of the member 6 operates so as to draw a circular orbit with the rotary base part 3a of the top plate 3 in a center. Thus, the shaft 72 which the other end part 6c is connected to is pushed out forward with the positional change of the part 6a while rotating clockwise. A slide plate 5 to which the damper 7 is fixed is pushed out forward with this. A volute spring energizes the shaft 72 in a rotating direction through the member 6 by operating the plate 3 from a horizontal state to a standing state. Little force is required at the time of lifting the plate 3 by a hand, etc., due to this energizing force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desk, and more particularly to a desk which is used by turning a top plate from an upright position to a front position to be substantially horizontal.

[0002]

2. Description of the Related Art When not in use, a desk of this type raises a top plate upward from about 90 degrees to about 100 degrees, and is housed in a main body in a substantially vertical state (standing state). From this state, it is tilted forward and used in a substantially horizontal state.
Specifically, by tilting the top plate forward, the slide member housed horizontally in the main body when not in use is slid forward and protrudes as it is, and the top plate is horizontally supported by this slide member. Things. Therefore,
When the table is not in use, when the table is in a substantially horizontal state, the space occupied by the table is increased by the area occupied by the table, and the room can be effectively used.

[0003]

However, when the desk is tilted forward without using a hand or the like when the desk is tilted forward during use, the rotational torque gradually increases, and finally the desk slides forward. As a result, the top plate or the slide member is damaged. Therefore, in the case of the conventional desk of this type, it is necessary to always bring down the top plate with a hand or the like, and it is troublesome. On the other hand, when the top is lifted so as to rotate from a substantially horizontal state to an upright state, it is desirable that the lifting operation can be performed with a smaller force because the top has a predetermined weight. I was

The present invention has been made to solve the above-mentioned problem. Even if the top plate is tilted forward without any hand or the like, the top plate vigorously collides with the slide member at the final point of the rotation operation. It is an object of the present invention to provide a desk that can prevent the top plate and the slide member from being damaged, and can perform the lifting operation of the top plate with a smaller force than before.

[0005]

According to a first aspect of the present invention, there is provided a desk according to the present invention, which can be stored in an upright state, and is substantially horizontal by being rotated forward about a base. A top plate that can be used in a state, and is located rearward when the top plate is stored, and slides forward to follow the operation of the top plate from a standing state to a substantially horizontal state, thereby sliding the top plate. A supporting slide member, a substantially L-shaped link member having one end connected to the top plate and the other end connected to the slide member, wherein the bent portion is located behind the connection position with the slide member; A desk having a link member arranged as described above, a rotary damper is provided on a side of the slide member, and the other end of the link member is connected to a rotation shaft of the rotary damper, and Is the top plate almost horizontal? Wherein the spring member for urging the rotation axis direction to rotate when rotating to standing state is provided. The desk according to the second aspect of the present invention is the desk according to the first aspect, wherein the spring member is a spiral spring, a center end is engaged with a rotation shaft of the rotary damper, and an outer end is provided. Is engaged with a portion that does not rotate with the rotation of the rotating shaft.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a desk according to the present invention will be described in more detail based on one embodiment shown in the drawings.
The desk 1 according to the present embodiment includes a main body 2, a top plate 3, a slide member 5, a link member 6, a rotary damper 7, a spiral spring 8, and the like.

As shown in FIG. 5, the main body 2 has two side plates 2a and 2b and a back plate 2c. However, the main body 2 is adjacent to one or both of the side plates 2a and 2b as necessary. Then, a structure in which a plurality of drawers are provided may be adopted. In addition,
In this embodiment, the length in the height direction of the side plates 2a and 2b is set to be equal to or more than the upper height when the top plate 3 described later is set up, and the ceiling plate 2d is disposed between the upper ends of the side plates 2a and 2b. It has a structure. Thereby, documents, books, and the like can be placed on the ceiling plate 2d.

The top plate 3 is formed, for example, in a substantially rectangular shape, and its rotating base 3a is provided inside the main body 2 (side plates 2a and 2b and the back plate 2).
c and the ceiling plate 2d) and is connected via hinges 4a to the fixed plate 4 which is bridged in the vicinity of substantially the center in the height direction of the side plates 2a and 2b (FIG. 1 and FIG. 5).

The slide member 5, like the top plate 3, is formed, for example, in a substantially rectangular shape, and is disposed below the top plate 3 when the top plate 3 is stored in an upright state. In the present embodiment, as shown in FIG. The means for making the slide member 5 slidable is not particularly limited. For example, grooves of a predetermined length (not shown) are formed on both sides of the slide member 5, and the inner surfaces of the side plates 2a and 2b are formed. Projecting protrusion (not shown)
, And slide along this projection. In addition, the slide member 5 may be a simple plate-shaped member, or may have a structure having a drawer portion or the like at a lower portion thereof.

When the top plate 3 rotates forward, the slide member 5 slides forward, and the top plate 3 and the slide member 5 move.
The slide member 5 is provided so as to slide rearward when rotated rearward. Specifically, as shown in FIGS. 1 to 3, the main body case 71 is fixed to the front of the side of the slide member 5 and the rotary damper 7 is provided. The rotary damper 7 has a rotary shaft 72 provided along the center thereof and protruding from the main body case 71, and a cutout 72a is formed in a portion of the rotary shaft 72 protruding from the main case 71. ing. The center end 8a of the spiral spring 8 is engaged with the cut 72a. The spiral spring 8 urges the rotating shaft 72 in a direction in which the top plate 3 is rotated from a substantially horizontal state to an upright state via a link member 6 described later. Is mounted so that the winding direction of the above becomes such a biasing direction. The outer peripheral end 8b of the spiral spring 8 is engaged with a portion that does not rotate with the rotation of the rotating shaft 72. The engagement portion of the outer peripheral end 8b of the spiral spring 8 may be any portion as long as it does not rotate with the rotation of the rotating shaft 72 as described above. For example, the main body case 71 of the rotary damper 7 may be used. Frame 7 for mounting the main body case 71 to the side of the slide member 5
3, or the side of the slide member 5. In the present embodiment, the mounting frame 7
3, an engaging projection 73a is protruded, and the outer peripheral end 8b of the spiral spring 8 is engaged with the engaging projection 73a.

As shown in FIG. 1, the link member 6 is formed in a substantially L-shape, and has a connecting hole 6d formed at one end 6a.
Is inserted through a connection shaft 3b protruding from the side portion 3a of the top plate 3 to be pivotally supported. The link member 6 has a straight portion from the other end 6c to the bent portion 6b when the straight portion from the one end 6a to the bent portion 6b is along the side when the top plate 3 is erected. It is provided by connecting the other end portion 6c to a protruding portion of the rotary shaft 72 of the rotary damper 7 so that it is substantially horizontal and the bent portion 6b is located rearward. Thus, when the top 3 rotates forward, the one end 6a of the link member 6 operates so as to draw a circular orbit around the rotation base 3a of the top 3, so that the other end 6c is connected. While being rotated clockwise in FIG. 1, the rotating shaft 72 is pushed forward along with the change in the position of the one end portion 6a,
Accordingly, the slide plate 5 to which the rotary damper 7 is attached is pushed forward.

Here, the rotary damper 7 may be any as long as the rotary operation of the rotary shaft 7 via the link member 6 accompanying the rotation of the top plate 3 can be delayed.
As shown in FIG. 4, a rotor 74 may be loaded around the rotation shaft 72 and a viscous liquid such as grease may be injected between the rotor 74 and the main body case 71. In this case, in order to exhibit sufficient viscous resistance while being small, a plurality of uneven portions 71a are formed in the main body case 71 as shown in FIG. Concavo-convex part 74 engaging with part 71a
It is preferable to use those having a. Uneven part 71
By forming a and 74a, the sliding contact area between the main body case 71 and the rotor 74 is increased.

Of course, the present invention is not limited to the one using viscous resistance. The rotor is formed with a smaller diameter than the main body case, and a vane (not shown) having an orifice is protruded around the rotor. Alternatively, a rotary damper utilizing dynamic pressure resistance generated when a viscous liquid passes through the orifice may be used.

Although any type can be applied in the present invention, it is a type utilizing dynamic pressure resistance, and a large dynamic pressure resistance is used only when the top plate 3 to be controlled changes from a standing state to a substantially horizontal state. In the case of a unidirectional rotary damper equipped with a valve mechanism in addition to the orifice,
In order for the valve mechanism to perform the valve closing operation, a load more than a predetermined value is required. Therefore, when the top plate 3 is slightly lifted from the substantially horizontal state and the supporting hand is released, the load for closing the valve mechanism is insufficient, and play occurs in which the dynamic pressure resistance does not work. . Even in this case, in the present invention, the spiral spring 8 is used.
, The resistance of the spiral spring 8 acts. However, when the top plate 3 is made of a particularly heavy material, it is preferable to use a type utilizing viscous resistance as in the present embodiment so that the resistance of the rotary damper 7 also works reliably.

The desk 1 according to the present embodiment having the above configuration operates as follows. In a state in which the top plate 3 is housed in the main body 2, that is, in a standing state shown in FIG.
The slide member 5 is also located at the rear, and the link member 6
The straight portion from one end 6a to the bent portion 6b is substantially horizontal along the side of the top plate 3, and the straight portion from the bent portion 6b to the other end 6c is substantially horizontal along the side of the slide member 5. ing.

The spiral spring 8 is tightened when the top plate 3 changes from the upright state to the substantially horizontal state.
In the standing state of the top plate 3, the force for urging the top plate 3 rearward may not be applied. That is, when the top plate 3 is located in a substantially horizontal state, it is sufficient if the top plate 3 can be urged in a direction in which the top plate 3 is erected. It may be set to be able to do so. With this setting, an engaging member (not shown) for supporting the top plate 3 in the upright state can be eliminated.

When the top plate 3 is tilted forward (counterclockwise in FIG. 1) from the standing state to the substantially horizontal state, the position of the one end 6a of the link member 6 draws a circular orbit accordingly. , As shown by the imaginary line. The other end 6 c of the link member 6 is connected to the rotary shaft 72 of the rotary damper 7.
, The position of the other end 6c in the vertical direction does not change. Therefore, when the position of the one end 6a comes forward while lowering, the position of the other end 6c must be changed in the direction of pushing forward, and the position of the one end 6a draws a circular orbit. Since it changes while falling, the position of the bent portion 6b changes so as to draw a circular orbit clockwise in FIG. 1 around the other end 6c. Thereby, the rotation shaft 72 of the rotary damper 7 is rotated clockwise in FIG.

As a result, the rotary shaft 7 of the rotary damper 7
A viscous resistance acts between the rotor connected to the main body 2 and the main body case 71, and the other end 6c of the link member 6 is centered in FIG.
The position change in the upward clockwise direction becomes slow, and the operation of the top plate 3 from the standing state to the substantially horizontal state becomes slow. Also, since the spiral spring 8 is tightened,
Thereby, the resistance of the spiral spring 8 also acts.

On the other hand, when raising the top plate 3 from a substantially horizontal state, the top plate 3 is lifted with a hand or the like. On this occasion,
Since the spiral spring 8 is tightened and urges the top plate 3 in a direction to elevate the top plate 3 from a substantially horizontal state, when the top plate 3 is lifted by this urging force, a little force is used as compared with the conventional case. It is enough. When the top plate 3 is lifted, the position of the one end 6a of the link member 6 connected to the top plate 3 changes rearward, so that the slide member 5 moves rearward, Return to position.

In the above embodiment, the spiral spring 8 is used as the spring member. However, when the top plate is turned from a substantially horizontal state to an upright state, the rotating shaft is urged in a direction to rotate. The type is not limited as long as it is possible. However, if the spiral spring 8 is used as in the above embodiment, the rotary damper 7 and the spiral spring 8 are used.
The entire length in the thickness direction including the size can be stored compactly.

[0021]

According to the desk of the present invention, a rotary damper is provided on the side of the slide member, the other end of the link member is connected to the rotation shaft of the rotary damper, and the top plate is placed in a substantially horizontal state. A spring member is provided for urging the rotating shaft in a direction in which the rotating shaft is rotated when the rotating shaft is rotated from the upright state.
For this reason, even if the top plate is tilted forward without the help of a hand or the like, it is possible to prevent a vigorous collision with the slide member at the final point of the rotation operation, and to damage the top plate and the slide member. In addition to this, the lifting operation of the top plate can be performed with a smaller force than before.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an operation of a desk according to one embodiment of the present invention.

FIG. 2 is a side view for explaining an arrangement relationship between a rotary damper, a spiral spring, and a ring member.

FIG. 3 is a plan view for explaining an arrangement relationship between a rotary damper, a spiral spring, and a ring member.

FIG. 4 is a sectional view showing a schematic configuration of a rotary damper used in the embodiment.

FIG. 5 is an external perspective view of the desk according to the embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 desk 2 main body 3 top plate 4 fixing plate 5 slide member 6 link member 7 rotary damper 71 main body case 72 rotation axis 8 spiral spring

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takao Fukukawa 500 Furukawacho, Hamamatsu-shi, Shizuoka Prefecture Somic Ishikawauchi, Inc. (72) Inventor Yukihiro Hase 500 500 Furukawa-cho, Hamamatsu-shi, Shizuoka Prefecture Somic Ishikawauchi

Claims (2)

[Claims] 1. A top plate which can be stored in an upright state, and which can be used in a substantially horizontal state by being rotated forward about a base, and which is located rearward when the top plate is stored, A slide member that slides forward and supports the top plate following the operation of the top plate from the standing state to the substantially horizontal state, and one end is connected to the top plate and the other end is connected to the slide member. A desk member having a substantially L-shaped link member and a link member arranged such that a bent portion is located rearward of a connection position with the slide member. Is disposed, and the other end of the link member is connected to a rotation shaft of the rotary damper, and the rotation shaft is rotated in a direction in which the top plate is rotated from a substantially horizontal state to an upright state. A spring member for biasing Desk, characterized in that it has been. 2. The desk according to claim 1, wherein the spring member is a spiral spring, a center end is engaged with a rotation shaft of the rotary damper, and an outer end is rotated by the rotation shaft. A desk that is engaged with a portion that does not rotate with it.