JP6030920B2 - Flap table - Google Patents

Description

  The present invention relates to a so-called flap table in which a top plate is rotatable.

2. Description of the Related Art Conventionally, a flap table is known in which a table top plate is pivotally supported by a top plate rotation support mechanism provided on a leg portion. The flap table can use the top plate rotation support mechanism to place the top plate in a substantially horizontal position when in use, and to put the top plate in an upright position at an appropriate time. Such a flap table can be stowed tightly and stored when the flap table is not in use, since the top plates do not contact each other even if the flap tables are brought close to each other in the horizontal direction by raising the top plate. Convenience is high in that the occupied space during storage can be reduced.
By the way, in the flap table as described above, when the weight of the top plate is heavy, a considerable amount of force is required for the user to turn and stand the top plate in a lying state. For a user who stores and arranges the tables all at once, the storing operation of the flap table is a heavy work.

  Therefore, as a conventional flap table, for example, in Patent Document 1, a torsion bar is provided along the rotation center line of the top plate, one end of the torsion bar is fixed to the table side, and the other end is fixed to the top plate. In addition, a flap table is disclosed in which the torsion bar is pre-twisted in the direction in which the top plate is lifted to urge the top plate in the direction in which the top plate is always lifted. According to this flap table, the top plate of the flap table is elastically urged by the torsion bar in a direction that always opens (stands up), and can be lifted with a slight force. Can be released from.

JP 2010-252867 A

  As described above, the flap table in which the urging force in the direction of lifting the top plate is always acting does not require a large force to lift the top plate, so that the user does not feel fatigue in the storing operation of the flap table. In terms, it is excellent.

However, the conventional flap table has the following problems.
That is, there is a case where the weight of the top plate has a lateral deviation. For example, when the shape of the top plate is not symmetrical, the weight may be different on the left and right even if the specific gravity of the top plate is uniform. Moreover, another component may be attached to the top plate. For example, if a “drawer” is fixed at a position where the top plate is biased, or if a personal computer installation stand is provided, the weight of the top plate may be biased to the left or right. Depending on whether it is lifted, the required rotational force is biased.
Furthermore, the center of rotation of the top plate is often fitted to a shaft fixed to a table to form a bearing, but this bearing generally does not use oilless metal or the like for cost reduction. Since the fitting is simple and the variation in the frictional resistance of the bearing portion is considerably large, the necessary rotational force is biased depending on which of the left and right sides of the top plate is lifted.
If the top plate is lifted even if the required rotational force is biased depending on whether the left or right of the top plate is lifted in this way, the rotational moment applied to the top plate differs from left to right. The top plate may be warped or the bearing may be damaged by long-term use.
Therefore, the present invention equalizes the force applied to the left and right of the top plate by allowing the biasing force by the biasing means for lifting the top plate to be adjusted separately on the left and right sides in the flap table on which the top plate can be lifted. An object of the present invention is to provide a flap table that can minimize warping of the top plate and damage to the bearing.
Note that not only the torsion bar but also various springs, actuators and the like may be used as means for urging the top plate in the lifting direction, and the present invention includes all of them.

In order to achieve the above object, the flap table of the present invention comprises:
A top plate rotation support mechanism for pivotally supporting the top plate so as to be rotatable between its sideways posture and a standing posture;
In a state in which the top plate is rotatably supported by the top plate rotation support mechanism, the top plate has a direction opposite to the torque generated by the gravity of the top plate or a portion interlocking with the rotation of the top plate. A top plate biasing means for generating torque;
In a flap table comprising:
The top plate biasing means comprises two top plate biasing means, a right top plate biasing means for biasing the right side portion of the top plate and a left top plate biasing means for biasing the left side portion of the top plate, the two top plate biasing means, Ri independently adjustable der biasing force thereof, respectively,
As an example of the right top plate urging means and the left top plate urging means, it is configured to include a torsion bar, and by independently adjusting any of the twist angle, thickness, or length of the left and right torsion bars, It is configured as a flap table that allows the urging force of the torsion bar to be adjusted independently .
In this case, the supporting position of the top plate, the front end of the top plate, the rear end, or those ing is rotatably supported in the longitudinal direction of the intermediate portion is considered.
Further, when the top plate urging means uses only one torsion bar and the urging force by the left and right top urging means is adjusted by adjusting the length of the torsion bar, the fixed position of one torsion bar is determined. By adjusting, the urging force by the left and right top plate urging means may be adjusted.

As described above, the flap table according to the present invention includes a top plate rotation support mechanism that pivotally supports the top plate so that the top plate can be rotated between the horizontal position and the standing posture, and the top plate rotates the top plate. A top plate urging means for generating a torque in a direction opposite to the torque generated by the gravity of the top plate or a portion interlocking with the rotation of the top plate while being supported rotatably by a support mechanism; , The top plate urging means includes: a right top plate urging means for urging the right side portion of the top plate; and a left top plate urging means for urging the left side portion of the top plate. Since the two top plate urging means are each configured as a flap table whose urging force can be independently adjusted, the deviation of the weight of the left and right of the top plate, Flap table with uneven resistance force of left and right bearings Even, without being or warp in the top plate by the rotating force of the top plate biasing means acting on the left and right of the top plate, or damage to the left and right bearing portions is prevented.
When the right top plate urging means and the left top plate urging means are configured to include a torsion bar, the twist angle, the thickness, or the length of the left and right torsion bars are independently adjusted. The urging force of the torsion bar can be adjusted independently.
Further, the rotation support position of the top plate may be any of the front end, the rear end, or the intermediate portion in the front-rear direction.
Further, when adjusting the urging force by the left and right top plate urging means by adjusting the length of the torsion bar, the top plate urging means adjusts the fixing position of the middle of the top plate in the left-right direction of the top plate. The urging force by the left and right top plate urging means can be adjusted.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole flap table which concerns on embodiment of this invention, (a) is the front view, (b) is the side view, (c) is the side which shows the state which stood the top plate 30 degrees Figure. The schematic front view which shows the attachment state of the torsion bar mainly of the flap table which concerns on embodiment of this invention. The schematic side view which mainly shows the attachment state of the torsion bar of the flap table which concerns on embodiment of this invention. The schematic front view which shows the attachment state of the lock lever mainly of the flap table which concerns on embodiment of this invention. The schematic side view which mainly shows the attachment state of the lock lever of the flap table which concerns on embodiment of this invention. The schematic side view which mainly shows the structure of the lock lever of the 30 degree standing state of the flap table which concerns on embodiment of this invention. The front view which shows the detail of the penetration pipe used for the flap table which concerns on embodiment of this invention, and its attachment member. The front view which shows the combined state of the through pipe used for the flap table which concerns on embodiment of this invention, and the torsion bar attached to it. The front view which shows the detail of the torsion bar used for the flap table which concerns on embodiment of this invention, and its attachment member. The front view which shows the detail of the top-plate receiving metal fitting used for the flap table which concerns on embodiment of this invention, and its attachment member. The detailed figure of the penetration pipe used for the flap table which concerns on embodiment of this invention. The figure which shows the detail of the torsion bar set metal fitting used for the flap table which concerns on embodiment of this invention. The figure which shows the detail of the torsion bar rear end fixing metal fitting used for the flap table which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, terms indicating specific directions and positions (for example, “up”, “down”, “right”, “left” and other terms including those terms) are used as necessary. . The use of these terms is to facilitate understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms. Moreover, the part of the same code | symbol which appears in several drawing shows the same part or member.

Initially, the outline | summary of the flap table 1 concerning one Embodiment of this invention is demonstrated using FIG.
As shown in the figure, the top plate 3 of the flap table 1 is placed between a sideways (horizontal) posture as shown in FIGS. 1A and 1B and a standing posture as shown in FIG. Is pivotally supported. Although the top plate 3 shown in (c) has a standing angle of 30 °, this is an example, and can be raised at an arbitrary angle such as 45 °, 60 °, and 90 °, for example. The mechanism for rotatably supporting the top plate 3 as described above is the top plate rotation support mechanism in the present invention.

  The top plate 3 is rotatably supported by the top plate rotation support mechanism around a rotation center axis 5 shown in the figure, but when the top plate 3 is heavy, the top plate 3 A large force is required to stand up, and when performing operations such as storing many flap tables in close intervals, the operation becomes tired. Therefore, in order to be able to lightly rotate the top plate 3 in the standing direction, the top plate 3 or the top plate 3 and the top plate are supported in the state of being freely rotatable as described above. There is provided a top plate urging means for applying to the top plate 3 a torque in the opposite direction to the torque generated by the gravity of the portion interlocked with the rotation of the top plate 3 (that is, the torque in the direction of lifting the top plate 3). The top plate urging means in this embodiment is constituted by a torsion bar 7 which will be described in detail with reference to FIG. Since the flap table 1 appearing in this embodiment is a horizontally long table, for ease of illustration, the flap table 1 and the torsion bar 7 are arranged in the horizontal direction in FIG. 2, FIG. 4, FIG. A cut in the middle of is shown.

  In addition, the flap table 1 in this embodiment is rotatably supported on the pair of left and right legs 9, 9 at the front end portion thereof. Depending on the flap table 1, the top plate 3 may be rotatably supported at a substantially central portion in the front-rear direction. In such a case, a large force is required to lift the top plate 3. Therefore, the top plate urging means in the present invention may not be required. However, if the weight of the top plate 3 is unbalanced in the front-rear direction or the resistance when the top plate is rotated is large, the top plate is also used. In order to lift 3, a large force may be required, and a top plate biasing means may be required.

The top plate biasing means in this embodiment includes a right top plate biasing means that biases the right side portion of the top plate 3 in a standing direction (lifting direction), and a direction in which the left side portion of the top plate 3 stands (lifting direction). The two top plate urging means, ie, the left top plate urging means for urging the two, and the two top plate urging means can independently adjust their urging forces.
Hereinafter, the top plate urging means will be specifically described.

As shown in FIG. 2, the top plate 3 is supported so as to be rotatable about the axis of the through pipe 13 fixed between the hinge fittings 11 fixed to the upper portions of the left and right legs 9, 9. ing.
As shown in FIG. 11, the through pipe 13 is a simple metal pipe, and two notches 15 and 15 are formed on both end faces thereof.
The torsion bar rear end fixing bracket 17 shown in FIG. 13 has a substantially disk shape when viewed from the front as shown in the figure, and is inserted into the notches 15 and 15 of the through pipe 13 on the outer periphery thereof and fixed by welding. Protrusions 19 are formed.
A circular through hole 21 is formed in the front center of the rear end fixing bracket 17 of the torsion bar, and circular torsion bar fixing holes 23 and 23 are formed on the circumference of the through hole 21.

  As shown in FIG. 8 (a), the torsion bar rear end fixing bracket 17 is inserted from the end of the through pipe 13, and then its projections 19, 19 are inserted into the notch 15, Since 19 is fixed to the notch 15 by welding, both ends of the through pipe 13 are closed and fixed to the through pipe 13.

  The torsion bar 7 is a metal bar and is used as a pair. That is, as shown in FIG. 9, the rear end 7a of the torsion bar 7 is inserted into the torsion bar fixing hole 23 of the rear end fixing bracket 17 of the torsion bar and welded to the rear end fixing bracket 17 of the torsion bar. Fixed. A cylindrical tip metal fitting 25 is fixed to the tip 7 b of the torsion bar 7. A chamfer 25 a for preventing rotation, which will be described later, is formed on the outer peripheral surface of the tip fitting 25.

  In this way, the pair of torsion bars 7 and 7 each having the rear end 7a welded to the torsion bar rear end fixing bracket 17 has the rear end 7a as a counterpart as shown in FIG. 8 (b). The end 7b is inserted in the through-pipe 13 in a state of being opposed to the front end 7b and inserted into the through-hole 21 of the rear end fixing bracket 17 of the mating torsion bar. Each torsion bar rear end fixing bracket 17 is fixed to the through pipe 13 by being welded to the through pipe 13 as described above.

  That is, in this state, the two torsion bars 7.7 have one end (rear end 7a) separated from the center line of the through pipe 13 and fixed to the through pipe 13 via the torsion bar rear end fixing bracket 17. However, the tip 7b is substantially on the center line of the through pipe 13 and is free with respect to the rear end fixing bracket 17 and the through pipe 13 of the torsion bar (it is possible to twist within the elastic range of the material). It is in the state of. An outline of this state is shown in FIG. 2, and details are shown in FIG. 7 (b).

As described above, the through pipe 13 provided with the torsion bar 7 via the torsion bar rear end fixing bracket 17 is welded to the hinge bracket 11 at each end, and the hinge bracket 11 is fixed to the legs 9 and 9. By this, it is supported on the leg parts 9 and 9.
As shown in FIG. 2, the tip metal fitting 25 fixed to the free tip 7 b of the torsion bars 7, 7 fixed to the legs 9, 9 is provided with a torsion bar set metal fitting 27 and a ceiling plate. A top plate receiving bracket 31 to which the top plate 3 is fixed is fixed via a plate receiving bracket support shaft 29. At this time, the top plate receiving bracket 31 has the torsion bars 7 and 7 in a twisted state so that the top plate 3 is urged to rotate in the direction of the standing state shown in FIG. It is fixed to the tip 7b via a torsion bar set metal fitting 27 and a top plate support metal support shaft 29. The amount of twisting the torsion bars 7, 7 in advance (initial twist angle) is uniquely set for each torsion bar 7, 7 as will be described later.

  That is, the details of the top plate bracket 31 fixed to the top plate 3 are shown in FIG. 10, and as shown in FIG. 10B, the top plate bracket 31 supports the top plate bracket. A shaft (hollow boss shaft) 29 is fixed by welding.

  Further, as shown in FIG. 10C, the flange portion 29a of the top plate support bracket support shaft 29 has a plurality of equiangular angles on the same circumference around the central axis of the top plate support bracket support shaft 29. Tap holes 29b, 29b, ... are formed, and the torsion bar set fitting 27 fixed to the tip fitting 25 fixed to the tip 7b of the torsion bar 7 (fixed so as not to rotate using the chamfer 25a). The screw 27b (see FIGS. 2 and 3) inserted into the screw hole 27a (see FIG. 12) is adjusted to which of the plurality of tap holes 29b, 29b,. , 7 is twisted in advance (initial twist angle) for each torsion bar 7, 7.

  As a result, the rotational force of the top plate urging means acting on the left and right of the top plate 3 can be obtained even in the flap table 1 having a bias in the weight of the left and right of the top plate 3 and a bias in the resistance force of the left and right bearings. By being set uniquely, the top plate is not warped, or damage to the left and right bearing portions is prevented.

  In this embodiment, the one torsion bar 7 constitutes a right top plate urging means for urging the right side portion of the top plate, and the other torsion bar 7 is a left side that urges the left side portion of the top plate. By configuring the top plate urging means and adjusting which of the plurality of tap holes 29b, 29b, ..., the two top plate urging means can independently adjust their urging forces. ing.

In this embodiment, torsion bars 7 and 7 are employed as an example of the right top plate urging means and the left top plate urging means, and the top plate 3 is adjusted by adjusting the twist angle of the left and right torsion bars 7 and 7. The right and left biasing force is adjusted by changing the thickness of the torsion bars 7, 7 or adjusting the length of the left and right top plate biasing means. It may be configured to be adjustable.
In these cases, the top plate 3 may be supported at a front end, a rear end, or an intermediate portion in the front-rear direction of the top plate 3 so as to be rotatable.
Further, when the top plate urging means adjusts the urging force by the left and right top plate urging means by adjusting the lengths of the torsion bars 7, 7, only one torsion bar is used, and in the middle of the torsion bar 7. The urging force by the left and right top plate urging means may be adjusted by adjusting the fixed position.

The flap table 1 in this embodiment is configured as described above.
By the way, in the flap table which can rotate the top plate 3, it is desirable to stabilize the attitude | position of the top plate 3 in a horizontal state (normal use state) or a standing state. That is, when the top plate 3 is in a standing state or a horizontal state, a member that fixes the top plate 3 and releases the fixing as necessary is necessary so that the top plate 3 is fixed at a predetermined angle. The lever 33 and the pins 35a and 35b described in FIGS. 4, 5, and 6 are members for that purpose.

That is, the lever 33 shown in FIG. 5 and the like is rotatable around a support shaft 37 fixed to the top plate receiving bracket 31, and when the top plate 3 is in the standing state as shown in FIG. The groove 33a engages with the pin 35a fixed to the hinge metal fitting 11, thereby fixing the top board receiving metal fitting 31 and the top board 3 integrated therewith in an upright state. To remove the groove 33a of the lever 33 from the pin 35a, the operator rotates the handle 33c of the lever 33 counterclockwise in FIG. 37a is a helical spring for applying a clockwise urging force to the lever 33 in order to prevent the lever 33 from being released from the pin 35a.
Further, when the top plate 3 is in the horizontal position shown in FIG. 5, the groove 33a engages with another pin 35b to maintain the horizontal state of the top plate 3.
The groove 33b formed in the lever 33 makes a relief for eliminating interference between the pin 35a and the lever 33 when the top plate 3 is in the horizontal state shown in FIG.

As described above, the fixing of the top plate 3 in the horizontal state and the upright state is achieved by the lever 33 and the pins 35a and 35b. However, the flap table 1 actually manufactured is naturally accompanied by some processing error. May cause play on the top 3. In particular, the play generated when the top 3 is in a horizontal state reduces the feeling of use even if it is slight.
In order to eliminate such slight backlash in the horizontal state, the flap table 1 according to this embodiment is provided with an adjustment screw 39 protruding from the lower surface 3a of the top plate 3 as shown in FIGS.

That is, in the horizontal state of the top plate 3 shown in FIG. 5, if the lower surface of the top plate receiving metal 31 abuts on the top of the receiving part 31a of the hinge metal 11 and the pin 35b is in close contact with the groove 33a, There is no such play. However, in actuality, the above-described backlash may occur due to the processing error of the groove 33a, the error of the mounting position of the pin 35b, or the like. Accordingly, in the flap table 1 according to this embodiment, the lower surface 3a of the top plate 3 is provided with an adjusting screw 39 that can adjust the protruding amount toward the top of the receiving portion 31a of the hinge metal fitting 11. The adjustment screw 39 is adjusted so that the adjustment screw 39 protrudes to a position where the groove 33a closely contacts the top of the receiving portion 31a of the hinge bracket 11 when the groove 33a closely contacts the pin 35b. By fixing, the play of the top plate 3 in the horizontal state is prevented.
More specifically, the adjustment screw 39 welds a mounting seat (not shown) to the top plate bracket 31, taps there, and screws the adjustment screw 39 of a hexagon socket set screw M 6 (follow set screw). It is combined. And in the state which the top plate 3 floated (FIG. 6), the entrance / exit is adjusted with a hexagonal wrench from the bottom face of the top plate support 31. A counterbore for escaping the length of the mounting seat and the screw is formed on the back surface of the top plate 3.

  The present invention can be applied to a so-called flap table in which the top plate is rotatable.

DESCRIPTION OF SYMBOLS 1 ... Flap table 3 ... Top plate 3a ... Lower surface 5 ... Turning center axis | shaft 7 ... Torsion bar 9 ... Leg part 11 ... Hinge metal fitting 13 ... Through pipe 15 ... Notch 17 ... Torsion bar rear end fixing metal fitting 19 ... Protrusion 21 ... Through hole 23 ... Torsion bar fixing hole 7a ... Rear end 7b ... Tip 25 ... Tip fitting 25a ... Chamfer 27 ... Torsion bar set fitting 27a ... Screw hole 27b ... Screw 29 ... Top plate support bracket support shaft 29a ... Flange 29b ... Tap Hole 31 ... Top plate bracket 31a ... Receiving portion 33 ... Lever 33a, 33b ... Groove 33c ... Handle 35 ... Pin 37 ... Support shaft 37a ... Helical spring 39 ... Adjustment screw

Claims (3)

A top plate rotation support mechanism for pivotally supporting the top plate so as to be rotatable between its sideways posture and a standing posture;
In a state in which the top plate is rotatably supported by the top plate rotation support mechanism, the top plate has a direction opposite to the torque generated by the gravity of the top plate or a portion interlocking with the rotation of the top plate. A top plate biasing means for generating torque;
In a flap table comprising:
The top plate biasing means comprises two top plate biasing means, a right top plate biasing means for biasing the right side portion of the top plate and a left top plate biasing means for biasing the left side portion of the top plate, the two top plate biasing means, Ri independently adjustable der biasing force thereof, respectively,
The right top plate urging means and the left top plate urging means include a torsion bar, and the torsion bar of the torsion bar can be adjusted by independently adjusting any of the twist angle, thickness, or length of the left and right torsion bars. Flap table characterized in that the biasing force can be adjusted independently . The flap table according to claim 1, wherein the top plate is rotatably supported at a front end, a rear end, or an intermediate portion in the front-rear direction. When the top plate biasing means uses only one torsion bar and the biasing force by the left and right top plate biasing means is adjusted by adjusting the length of the torsion bar, the fixing position of one torsion bar is adjusted. The flap table according to claim 2 , wherein the biasing force by the left and right top plate biasing means is adjusted.

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