JP3479896B2 - Folding table - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to is to be able to pivot between an approximately vertical folded storage state and a horizontal state of use relates folding table having a top plate that is pivotally connected to the strut.

[0002]

2. Description of the Related Art In a conventional folding table of this type,
When the top plate rotates from a horizontal state or a vertical state to the support column to a different state , gravity acts in either direction to lower the top plate.

[0003]

Therefore, the user of the folding table has to rotate the top plate to a different state while supporting the lowering of the top plate by gravity. If you do not support this with your hands, the top plate will descend suddenly,
There is a risk that the table will be damaged due to an impact load on the top plate, columns, locking device, etc., or a part of the user's body may be caught between the table parts, resulting in injury. . Further, when the top plate is lowered due to gravity, it is necessary to support the weight of the top plate by hand, which causes a problem that the user is burdened.

In order to solve such a problem, the present invention folds the top plate so that the top plate is prevented from being suddenly lowered by gravity when the top plate is rotated without supporting by hand. It is intended to serve a table.

[0005]

According to the present invention, the above problems can be solved as follows. (1) In a folding table having a top plate pivotally mounted on a support by a pivot so that it can be pivoted between a horizontal use state and a substantially vertical folding storage state, the pivot shaft is In order to buffer the rotation of the top plate around the center , oil is
While attaching the enclosed damper body to the top plate,
The turning resistance is given by the oil of the damper body
A shaft is attached to the column .

( 2 ) In the above item ( 1 ), the rotary shaft is provided with a wing portion extending in the radial direction, and the damper body is
It is assumed to have an oil chamber partitioned by the wing portion, leaving the oil passage narrowed .

( 3 ) In the above item ( 1 ) or ( 2 ), there is provided means for varying the turning resistance force of the turning resistance means depending on the turning direction.

( 4 ) In the above item ( 3 ), the check valve provided in the wing portion is used as the means for varying the turning resistance depending on the turning direction.

[0009]

1 to 5 show an embodiment of a folding table according to the present invention. The top plate (1) of the folding table is erected on a foot stand (2) with casters. the upper end of the strut (3), pivotally attached by pivot shaft (4), from a substantially vertical folded storage state shown in FIG. 4, the horizontal state of use shown in FIG. 5, or be rotated in the opposite You can In the case of this embodiment, as is clear from FIG. 5, since the pivot point is biased to the rear of the top plate (1) (on the left side of the figure), the top plate (1) is placed horizontally as shown in FIG. When turning to the state,
Gravity tends to cause sudden downward rotation.

According to the present invention, as shown in FIG.
(3) At the upper end vicinity of the shaft hole for securing rotating shaft (4)
(6) is drilled. The shaft hole (6) has, for example, a shape in which the upper and lower sides of a circle are cut off in parallel, and the rotation shaft (4) having the same cross section is mounted so as to be relatively unrotatable.

[0011] rotation shaft (4) has a rotational axis of the cylindrical damper body detailing the operation for FIGS. 2 and 3 (7), both sides of the mounting portion of the damper body (7) (7a) is a bolt
It is attached to the mounting bracket (5) having an L-shaped cross section by (8).

The mounting member (5) is attached to the back surface of the top plate (1) with a bolt (9).

As shown in FIGS. 2 and 3, the damper body (7) is a fan-shaped sealed oil chamber centering on the rotation shaft (4).
In this oil chamber (10) filled with hydraulic oil, a blade portion (11) extending in the radial direction from the rotating shaft (4) has an oil passage (11) narrowed in its outer periphery. The oil chamber (10) is partitioned so that the oil chamber (10a) is left. Oil chamber (10) damper body (7) having, out with the rotation shaft (4) Ru with wings (11), rotation resistance means is constituted.

The wing (11) is provided with a check valve (12),
In this embodiment, the counterclockwise oil flow shown in FIG. 3 is allowed, but the clockwise oil flow shown in FIG. 2 is not allowed.

To explain the operation of this embodiment, when the top plate (1) is rotated from the vertical folding storage position shown in FIG. 4 to the horizontal use position shown in FIG. standoff (3)
Since the wing portion (11) does not move, the damper body (7) forming the oil chamber (10) for accommodating the wing portion (11) is fixed on the damper main body (7) in FIG. As shown by
Rotate around (4).

At this time, with the check valve (12) closed, the oil flows only through the oil passage (10a) narrowed in the blade (11) partitioning the oil chamber (10). (10) Move from one side to the other. Therefore, even if the load of the top plate (1) acts, the rotating shaft
The rotation around (4) is buffered, and the top plate (1) slowly rotates while being given a rotation resistance until it is horizontally used.

[0017] When pivoting from a horizontal state of use to the vertical folded storage state, as shown in FIG. 3, the damper body (7) is rotated relative to the wing section (11). At this time, the check valve
Since the (12) is opened and most of the oil moves through this, almost no rotation resistance is given and the top plate (1) can be swung quickly.

In the above-mentioned embodiment, the top plate is lifted from the horizontal use state to the vertically folded storage state, but conversely, the top plate is lowered from the horizontal use state. There are also some that can be folded down into a vertical folding storage state. In this case, since the gravity acts when the vertical folding storage state is set, the rotation resistance means acts at this time.

[0019]

According to the first aspect of the present invention, it is possible to prevent the top plate from abruptly descending due to gravity without the need for supporting it by hand when rotating the top plate, and to prevent the table from being damaged by an impact. It is possible to prevent damage and injury due to a part of the user's body being sandwiched between the parts of the table, and it is possible to reduce the burden on the user when the top plate rotates due to gravity.

Also, the rotation of the top plate about the rotation axis is slowed down.
To opposition, ceiling dampers body oil is sealed inside
Since the rotation shaft is attached to the plate, and the rotation shaft is attached to the column so that the rotation resistance is given by the oil of the damper main body, an appropriate cushioning property is given by the resistance of the oil.

According to the second aspect of the present invention , the rotary shaft is provided with a wing portion extending in the radial direction, and the damper main body is provided with an oil chamber partitioned by the wing portion leaving a narrowed oil passage. because are assumed to have, effective rotational resistance means is constituted by a compact centering around the pivot shaft.

According to the third aspect of the invention , since the means for varying the rotation resistance force of the rotation resistance means according to the rotation direction is provided, the direction opposite to the direction in which the rotation is biased by gravity is provided. When turning, the top plate can be moved lightly when turning.

[0023] According to a fourth aspect of the invention, the means for varying the rotational resistance by the rotation direction, because are a check valve provided on the wings, in response to the rotational direction, the rotational resistance It can be switched automatically to give or not give.

[Brief description of drawings]

FIG. 1 shows an upper part of a column on one side of an embodiment of a folding table according to the present invention and a rotation resistance means attached thereto.
It is a partial perspective view which decomposes | disassembles and shows with a part of top plate.

FIG. 2 is an enlarged vertical cross-sectional view of the assembled rotation resistance means, illustrating the rotation in the direction in which the rotation resistance is applied.

FIG. 3 is an enlarged vertical cross-sectional view of the assembled rotation resistance means and is a diagram for explaining rotation in a direction in which rotation resistance is not applied.

FIG. 4 is a side view of an embodiment of the folding table according to the present invention in which the top plate is in a state where it is vertically folded and stored.

FIG. 5 is a side view of an embodiment of the folding table according to the present invention in which the top plate is in a horizontal use state.

[Explanation of symbols]

(1) Top plate (2) Foot stand (3) Support (4) Rotation axis (5) Mounting bracket (6) Shaft hole (7) Damper body (7a) Mounting part (8) (9) Bolt (10) Oil chamber (10a) Oil passage narrowed (11) Wing (12) Check valve

Claims (4)

(57) [Claims] 1. A folding table having a top plate pivotably mounted on a column with a pivot shaft so as to be pivotable between a horizontal use state and a substantially vertical folding and retracted state. In order to buffer the rotation of the top plate ,
Attach the damper body with oil inside to the top plate
At the same time, rotation resistance is given by the oil of this damper body.
A rotating shaft that is attached to the column.
That folding table. 2. The rotating shaft is provided with a wing portion extending in the radial direction, and the damper main body is provided with an oil chamber partitioned by the wing portion leaving a narrowed oil flow path.
The folding table described in 1 . Wherein the rotation resistance by the rotation resistance means, claim provided with means for varying the rotational direction 1 or 2
Folding table as described. 4. The folding table according to claim 3 , wherein the means for varying the turning resistance depending on the turning direction is a check valve provided on the wing portion.