JP2887081B2 - Table equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table apparatus having a structure capable of changing the height of a top plate.

[0002]

2. Description of the Related Art In general, a table apparatus comprises a top plate and legs for supporting the top plate at a predetermined height.
Usually, the leg supports the top plate at a fixed height. For this reason, depending on the usage state such as the height and use of the user, it is sometimes difficult to use the above-mentioned top plate at a predetermined height.

[0003] In view of the above, various approaches have been considered to make it possible to adjust the height of the top plate. One of the methods is to support the top plate at the most convenient height by making the legs elastic.

However, according to such a configuration,
When changing the height of the top plate, the length of a plurality of legs must be adjusted one by one, so that the adjustment operation takes a lot of time and may not be practical. Moreover,
According to such a configuration, when changing the height of the top plate, the table device must be turned over, so when an article is placed on the top plate, the article must be moved. In some cases, it cannot be adjusted.

[0005] Therefore, a table device has been developed in which the height of the top plate can be relatively easily adjusted. That is,
Guide rails are provided on both sides in the width direction of the lower surface of the top plate, and rollers provided at one ends of the pair of legs are movably engaged with the guide rails. These legs intersect in an X-shape, and the intersecting halfway portions are rotatably connected.

[0006] As described above, the use of the table device in which the height of the top plate can be freely changed can be expanded. For example, if the top plate is set to a height (low) that is just right for sitting on a sofa, it can be used as a center table in a reception area, etc., and just right for sitting on a chair and using it. Then, it can be used as a dining table.

Incidentally, the required size of the tabletop varies depending on the use of the table device. For example,
When used as a center table, a top plate with a very large area is not required, and when used as a dining table, it is more convenient to use a table as large as possible. Therefore, when changing the support height of the top plate according to the application,
At the same time, it is convenient to be able to change the size of the tabletop.

[0008]

As described above, when the support height of the top plate is changed according to the application, it is convenient if the size can be changed. The present invention has been made based on the above circumstances, and its purpose is to make it possible to easily adjust the height of the top plate, and to change the height according to the application, An object of the present invention is to provide a table device whose size can be changed.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a support means having a pair of guide portions provided in parallel, and a pair of split plates which are foldably connected to each other. The lower surface of the plate is rotatably attached to the support means, and the pair of split plates are rotated in either the folded state or the expanded state.
A top plate center portion is supported by said support means in,
A pair of moving shafts which are supported in a state parallel to the guide portion of the supporting means and at least one of which is movably provided, a first leg having an upper end connected to one of the moving shafts, and An upper end is connected, and an intermediate portion is rotatably connected to an intermediate portion of the first leg, and the moving shaft moves along the guide portion, thereby raising and lowering together with the first leg. A second leg, and holding means for holding the first and second legs in a state where the first and second legs stand at a predetermined angle so that the legs cannot fall down. .

[0010]

According to the above construction, even if the top plate can be lowered relatively easily using a gas spring having a low operating force, the reaction force in the upward direction can be reduced by lowering the top plate. Therefore, the top plate can be relatively smoothly lifted by the reaction force, and the size of the top plate can be changed by expanding or folding the pair of split plates.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show a table apparatus according to an embodiment of the present invention.
As shown in FIG. 3, a pair of split plates 1a and 1b
The top plate 1 is provided with a rectangular top plate 1 that is foldably connected to the top plate 1 by a zero. The top plate 1 is mounted on a rectangular support frame 2 as a support means. The support frame 2 has three lateral rods 3a arranged at a predetermined interval, and has a U-shaped cross-section with one side open and an inside as a guide portion. And a pair of guides 3b arranged and fixed at right and left ends of the horizontal rod 3a at right angles to each other, and spaced between the two guides 3b at a predetermined interval in parallel with one of the guides 3b. And a supporting rod 3c.

The size of each of the divided plates 1a and 1b of the top plate 1 is formed in a rectangular shape slightly larger than the rectangular shape of the support frame 2. A rotating body 61 is provided at a longitudinally intermediate portion between the support rod 3c and the one guide 3b. The rotating body 61 includes a base 62 attached to the support rod 3c and one guide 3c, and a rotating part 63 rotatably attached to the base 62. The lower surface of the one split plate 1a at a position deviated from the central portion in the longitudinal direction is fixedly connected to the rotating portion 63.

When the pair of split plates 1a and 1b of the top plate 1 are unfolded as shown in FIG. 1, a substantially central portion of a rectangle formed by the pair of split plates is supported by the support frame 2. As shown in FIG. 2, one divided plate 1a is overlaid with another divided plate 1b and folded, and these divided plates 1a,
1b together with the above-mentioned rotating part 63 and the rotation center O of the rotating part 63
With the fulcrum as a fulcrum, about 9 clockwise as indicated by an arrow X in FIG.
When rotated by 0 degrees, the rectangular split plate 1a is supported in a state where the longitudinal direction and the width direction are along the longitudinal direction and the width direction of the rectangular support frame 2.

As shown in FIG. 6B, a tip of the three horizontal rods 3a is formed into a hemispherical shape inside the hollow horizontal rod 3a located at one end in the longitudinal direction of the support frame 2. As shown in FIG. The stopper pin 64 is provided so as to be elastically urged in a protruding direction by a spring 65. This stopper pin 64
Has a front end protruding from the through hole 66 formed in the horizontal rod 3a to the upper surface side, and a flange 67 is formed in a middle part to prevent the end from being pulled out from the through hole 66.

FIG. 6 shows the lower surface of one of the divided plates 1a.
As shown in (a), the first concave portion 65a and the second concave portion 65
b are formed. As shown in FIGS. 1, (a) and (b), the pair of split plates 1a and 1b are unfolded and the longitudinal direction of one split plate 1a is orthogonal to the longitudinal direction of the support frame 2. As shown in FIG. 6 (b), the first recess 65a elastically engages with the stopper pin 64 to restrict the rotation of the split plate 1a, and splits as shown in FIGS. 2 (a) and 2 (b). When the plate 1b is folded and rotated 90 degrees in the direction of arrow X, the stopper pin 64 is inserted into the second recess 65b.
Are elastically engaged to restrict the rotation of the split plate 1a.

A pair of movable shafts 5a, 5a to which rollers 4 are rotatably attached to both ends of the pair of guides 3b, respectively.
b is provided movably. That is, the pair of guides 3b constitute support means, and the two movable shafts 5a and 5b are provided on the guide 3b so as to be movable in parallel. Pins (not shown) for preventing the roller 4 from coming off the guide are provided at both ends of the guide 3b.
Is provided.

A pair of first shafts is provided at both ends of one moving shaft 5a.
The upper ends of the legs 6a are fixed, and the upper ends of a pair of second legs 6b are fixed to both ends of the other moving shaft 5b.
Each pair of the first leg 6a and the second leg 6b intersect in an X-shape, and the intersecting halfway portion is pivotally connected by one connecting shaft 7 as shown in FIG. This connecting shaft 7 has
A portion between the pair of second legs 6b and the first leg 6
a and the second leg 6b, a collar 8
a and 8b are externally fitted. Thereby, each leg 6
It is prevented that a and 6b are displaced in the axial direction of the connecting shaft 7 while being deformed.

The lower ends of the pair of legs 6a and 6b are connected by a reinforcing shaft 9 longer than the interval between the legs.
A spherical ground member 11 made of a lubricating material such as a synthetic resin is attached to both ends of the reinforcing shaft 9. The legs 6a and 6b are also reinforced by the reinforcing shaft 9.

As shown in FIGS. 3A to 3D, brackets 12a and 12b are provided in the middle of the pair of moving shafts 5a and 5b, respectively. One end of a pair of band-shaped inner plates 13 is pivotally attached to a bracket 12a of one moving shaft 5a by a first connecting pin 14, and the other moving shaft 5b
One end of a pair of band-shaped outer plates 15 is pivotally connected to the bracket 12b by a second connecting pin 16.

A first long groove 17 is provided at one end of the inner plate 13.
A second long groove 18 is also formed at one end of the outer plate 15. The other end of the inner plate 13 has a first
The first slide pin 19 is slidably inserted into the second long groove 18 of the outer plate 15. A second slide pin 21 is attached to the other end of the outer plate 15, and the second slide pin 21 is slidably inserted into the first long groove 17 of the inner plate 13.

A rear end of a cylinder 22a of a gas spring 22 as a holding means is pivotally attached to the first slide pin 19, and a second slide pin 21 is provided at a tip of a rod 22b of the gas spring 22. The connected connector 23 is pivotally mounted.

At one end of the pair of inner plates 13, a cylindrical body 24 having a length of about half of the inner plates 13 is fixedly provided. Between one end surface of the cylindrical body 24 and the first slide pin 19, a compression coil spring 25 as reaction force generating means is inserted and interposed outside the cylinder 22a.

The connector 23 protrudes from the other end opening of the cylindrical body 24 located on the first moving shaft 5b side, as shown in FIG. 5 (a). The connector 23 is formed in a U-shape, and an operator 26 of the gas spring 22 projects from an intermediate portion thereof. A rotary element 27 having one end rotatably supported by a support shaft 28 is provided inside the connector 23. One end of a wire 29 is connected to the other end of the rotator 27. The wire 29 is slidably inserted into the guide tube 31 as shown in FIG. One end of the guide tube 31 is connected to a bracket 32 fixed to the tubular body 24.

The other end of the wire 29 is connected to an operating member 32 rotatably attached to one longitudinal end of the horizontal bar 3a at the center of the frame 2 as shown in FIG.
The operating member 32 has a slide hole 33 whose one end is located on the lower surface side of the horizontal rod 3a and whose other end extends outward from the end of the horizontal rod 3a. It is formed along the direction. A strip-shaped mounting plate 34 is slidably provided in the slide hole 33, and a slider 35 is fixed to the mounting plate 34. The slider 35 is provided with a handle 36. The slider 35 is urged by a spring 37 in the pulling direction.

With the handle 36, the slider 35 is slid in the horizontal direction shown by the arrow a in FIG. 4 against the urging force of the spring 37, and the mounting plate 34 is displaced from the lower surface of the horizontal rod 3a. If the operation member 32 is rotated in the direction, the operation member 32 is interlocked with the rotation, so that the wire 29 connected to the operation member 32 is pulled. That is, since the wire 29 cannot be pulled unless the handle 38 is operated in two steps, the erroneous operation can be prevented.

When the wire 29 is pulled by the handle 36, the rotator 27 shown in FIG. 5B rotates in the direction of arrow c. As a result, the operating member 26 of the gas spring 22 is pressed and the locked state of the gas spring 22 is released, so that the rod 22b projects from the cylinder 22a with a predetermined operating force.

FIGS. 3A and 3B show the gas spring 22.
Shows a state in which is operated. When the entire length of the rod 22b of the gas spring 22 projects from the cylinder 22a and extends, the first slide pin 19 provided at the other end of the inner plate 13 slides in the second long groove 18 provided in the outer plate 15. A second slide pin 21 provided at the other end of the outer plate 15 is provided with a first long groove 17 provided at one end of the inner plate 13.
Slide.

As a result, the inner plate 13 and the outer plate 15
Since the inner plate 13 and the outer plate 15 slide in directions overlapping each other, the length of the inner plate 13 and the outer plate 15 is reduced. One ends of the inner plate 13 and the outer plate 15 are connected to moving shafts 5a and 5b, respectively.

As described above, if the length formed by the inner plate 13 and the outer plate 15 by operating the gas spring 22 is reduced,
Since the distance between the pair of moving shafts 5a and 5b is reduced as shown by the dimension A in FIG. 7A, the pair of legs 6a and 6b whose upper ends are connected to the moving shafts 5a and 5b rotate in the upright direction. Will be. When the pair of legs 6a and 6b rotate in the upright direction, the top board 1 supported by these legs is displaced in the ascending direction. That is, the top plate 1 can be raised.

The handle 3 of the gas spring 22
If the operation according to 6 is released while the rod 22b projects to the stroke end, the top plate 1 can be positioned at the height at that time. That is, the top plate 1 can be held at an arbitrary height.

When lowering the top 1 held at the raised position, the gas sprig 22 is operated by the handle 36 and the top 1 is pushed down. As a result, the pair of legs 6a, 6b held in the upright state rotate in the falling direction, so that the first slide pin 19 and the second slide pin 21 move up the respective long grooves 17, 18 at the time of rising. It slides in the opposite direction, and the inner plate 13 and the outer plate 15 interlock with it. That is, the inner plate 13 and the outer plate 15 slide in a direction in which the length dimension formed by them increases.

At this time, the gas spring 22 is
2b slides in the direction of immersion into the cylinder 22a against the operating force, and the distance between the end surface of the cylindrical body 24 and the first slide pin 19 is reduced. The spring 25 is compressed to generate a repulsive force.

FIGS. 3C and 3D show the gas spring 22.
1B shows a state in which the rod 22b is compressed to the stroke end in the immersion direction, and FIGS. 1A and 1B show a state in which the top plate 1 is displaced to a lowered state. Lower the top plate,
When the legs 6a and 6b are folded down, the distance between the pair of moving shafts 5a and 5b is reduced as shown by the dimension B in FIG.
It becomes larger than the dimension A shown in FIG.

As shown in FIG. 1, FIG. 2 or FIG. 4, a longitudinal center of the central link 41 is pivotally attached to the lower surface of the longitudinal center portion of the horizontal rod 3a at the center of the frame 1.
The center link 41 has a first auxiliary link 42 at one end.
Is pivotally connected, and the other end is pivotally connected to one end of a second auxiliary link 43 having the same length as the first auxiliary link 42.
The other end of the first auxiliary link 42 is pivotally connected to one end of the first moving shaft 5a, and the other end of the second auxiliary link 43 is pivotally connected to the other end of the second moving shaft 5b. I have.

Accordingly, when the pair of moving shafts 6a and 6b slide in the direction of approaching or separating along the pair of guides 3b, the central link 41 rotates according to the amount of movement, so that the pair of moving shafts 6a and 6b move. The movement amount of the shafts 6a, 6b in the left-right direction along the longitudinal direction of the top plate 1 is the horizontal rod 3a at the center.
Will be matched on the basis of

Next, a case in which the table apparatus having the above-described configuration is used while changing the height of the top plate 1 will be described. FIG.
When the top plate 1 is held in an up state as shown in FIGS. 3A and 3B, the rod 22b of the gas spring 22 projects from the cylinder 22a as shown in FIGS. 3A and 3B. ing.

In order to lower the top plate 1 from such a state, the handle 29 is operated to pull the wire 29, and the rotating element 27 is rotated to press the operating element 26 of the gas spring 22; The locked state of the gas spring 22 is released. Next, the top plate 1 is pressed downward to descend. The pressing force causes the rod 2 of the gas spring 22 to move.
2b is immersed in the cylinder 22a.
As shown in (d), the space between the pair of moving shafts 5a and 5b is increased by sliding in a direction in which the inner plate 13 and the outer plate 15 are shifted. Thereby, the pair of legs 6a, 6b having the upper ends connected to the respective moving shafts 5a, 5b are pivoted from the upright state shown in FIG. 2 (b) in the falling direction shown in FIG. 1 (b). 1 can be lowered.

When the top plate 1 is moved from the position shown in FIG.
If the operation of the handle 36 is released at a position in the middle of being displaced to the position shown in (b), the top plate 1 can be held at that height.

Since the compression amount of the compression coil spring 25 increases as the top 1 is lowered, the operating force required to lower the top 1 increases. That is, the compression coil spring 25
, A repulsive force is accumulated by being compressed. However, when the height of the top plate 1 is reduced, the operation of pushing down the top plate 1 can be performed while the operator applies weight to the top plate 1, so that the repulsive force is accumulated in the compression coil spring 25. However, the operability does not significantly decrease.

On the other hand, as shown in FIGS.
In order to raise the lowered top plate 1 as shown in FIGS. 2A and 2B, the operator operates the handle 36 to press the actuator 26 of the gas spring 22. Thereby, the gas spring 22 is released from the locked state, and the rod 2
2b is urged in the protruding direction, so that a pair of moving shafts 5
a, 5b slide in the approaching direction. Therefore,
Since the pair of legs 6a and 6b rotate from the lying state shown in FIG. 1B in the upright direction shown in FIG.
Can be raised. At this time, the force urging the pair of legs 6a and 6b in the rising direction is not only the gas spring 22 but also the compressed compression coil spring 25.
The resilience is also added.

Therefore, even if a weak gas spring is used as the gas spring 22, the top plate 1 can be reliably raised by the restoring force of the compression coil spring 25. Also,
When the gas spring 22 having a weak force is used, when the raised top plate 1 is lowered, the rod 22 of the gas spring 22 is used.
Since b can be immersed in the cylinder 22a with a light force, the operability is also improved.

That is, even if the top plate 1 is easily lowered by using the gas spring 22 having a weak force, the compression coil spring 25 is compressed and the repulsive force is accumulated by lowering the top plate 1. With this configuration, the lowered top plate 1 can be reliably raised by the force of the gas spring 22 and the restoring force of the compression coil spring 25.

On the other hand, the supporting height of the top plate 1 can be changed according to the use of the table device. In this case, the size of the top plate 1 can be easily changed by changing the size according to the use. For example, when the table device 1 is used as a dining table, the support height of the top plate 1 is increased so that the user can easily use the table 1 while sitting on a chair. In this case, tableware and the like are placed on the top plate 1, so that the top plate 1 is easier to use if it is as large as possible. When it is desired to increase the size of the top 1, the pair of split plates 1 a and 1 b of the
The rotation angles of a and 1b are perpendicular to the longitudinal direction of the support frame 2 as shown in FIG. As a result, the unfolded pair of split plates 1a and 1b are supported by the support frame 2 at the rectangular central portion formed by the split plates 1a and 1b, and the stopper pins 64 are engaged with the first concave portions 65a of the first split plate 1a. In addition, since the rotation is regulated, the top plate 1 can be used in a stable state by those things.

When the table apparatus is used as a center table during reception, the support height of the top plate 1 is set sufficiently low so that a user sitting on a sofa can easily use it. In this case, the top plate 1 does not have too many objects placed thereon, and thus may be small. Therefore, in such a case, the size of the top plate 1 is reduced to half by folding the other divided plate 1b on the one divided plate 1a of the top plate 1,
Further, if the longitudinal direction of the dividing plate 1a is rotated along the longitudinal direction of the support frame 2, and the second concave portion 65b formed in the dividing plate 1a is engaged with the stopper pin 64, the folded top plate 1 Can be used in a stable state.

FIG. 7 shows another embodiment of the present invention. The same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. That is, in this embodiment, a tension spring 51 is used as a means for generating a repulsive force when the top plate 1 is lowered, instead of the compression spring 25 shown in the above embodiment. That is, when the top plate 1 is lowered, the interval between the pair of moving shafts 5a and 5b is increased, and the tension spring 51 is stretched between the moving shafts 5a and 5b.

As a result, when the top plate 1 is lowered, the tension springs 51 expand and a repulsive force is accumulated. Therefore, when the top plate 1 is raised, the force of the gas spring 22 and the restoring force of the tension springs 51 are required. Works. Therefore, even if the force of the gas spring 22 is weak, the top plate 1 can be reliably raised.

In this embodiment, the top plate 1 is composed of two split plates 1a and 1b foldably connected to each other in the same manner as in the above-described embodiment, so that the size of the top plate 1 can be changed according to the use condition. And one of the split plates 1a is rotatably attached by a rotating body 61.

In each of the above embodiments, the pair of moving shafts are movably supported by the guides. However, only one moving shaft is slidably provided, and the other moving shaft is immovable. It is only necessary that the pair of legs can be raised and lowered.

The holding means for holding the pair of legs in a state where the pair of legs are erected at a predetermined angle and supporting the top plate at a predetermined height so as not to fall down is not limited to a gas spring. A stopper or the like may be used to prevent the leg from turning in the falling direction.In short, the leg cannot be turned in the falling direction while the top plate is supported at a predetermined height. It just needs to be able to hold.

[0050]

As described above, according to the present invention, the top plate is formed of a pair of split plates that are foldably connected, and one of the split plates is rotated by the supporting means for supporting the top plate. Mounted as possible.

Therefore, when the supporting height of the top plate is changed according to the use, the size of the top plate can be changed to either the expanded state or the folded state of the pair of split plates according to the use. In addition, by rotating when the size is changed, a stable supporting state can be obtained for the supporting means.

[Brief description of the drawings]

FIG. 1A is a plan view of a table apparatus according to an embodiment of the present invention in a state where a top plate is lowered, and FIG. 1B is a side view of the same.

FIG. 2A is a plan view of the table apparatus in a state where the top plate is also raised, and FIG. 2B is a side view of the same.

3 (a) is a plan view showing a reduced state of a gas spring according to an embodiment of the present invention, FIG. 3 (b) is a side view thereof,
(C) is a plan view of a state where the gas spring is extended,
(D) is a side view similarly.

FIG. 4 is an enlarged side view of a part of a top plate provided with an operation mechanism for operating a wire.

5 (a) is an enlarged deformation view of the tip portion of the gas spring, FIG. 5 (b) is a cross-sectional view along the line YY in FIG. 5 (a), and FIG. 5 (c) is the same in FIG. 5 (a). Sectional drawing which follows the ZZ line.

FIG. 6 (a) is a plan view of the top plate similarly viewed from the lower surface side,
(B) is an enlarged sectional view showing an engagement state between a concave portion formed on the top plate and a stopper pin provided on the support frame.

FIG. 7 is a plan view of a table device showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Top plate, 1a, 1b ... Dividing plate, 2 ... Support frame (supporting means), 3b ... Guide (supporting means), 5a, 5b ... Moving axis, 6a ... 1st leg, 6b ... 2nd leg Body, 22: gas spring (supporting means), 25: compression coil spring (reaction force generating means), 51: tension spring (reaction force generating means), 6
1. Rotating body.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 55-125128 (JP, U) JP-A 60-171753 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47B 9/16

Claims (1)

(57) [Claims] 1. A pair of guide means are provided in parallel with a support means and a pair of split plates foldably connected to each other. The lower surface of one of the split plates is rotatably attached to the support means. Rotating the split plate in both the folded state and the expanded state
A top plate center portion is supported by said support means in,
A pair of moving shafts which are supported in a state parallel to the guide portion of the supporting means and at least one of which is movably provided, a first leg having an upper end connected to one of the moving shafts, and An upper end is connected, and an intermediate portion is rotatably connected to an intermediate portion of the first leg, and the moving shaft moves along the guide portion, thereby raising and lowering together with the first leg. A second leg, and holding means for holding the first and second legs in a state where the first and second legs stand at a predetermined angle so that the legs cannot fall down. Table device.