JP2021186148A - table - Google Patents

Abstract

To provide a table which is configured as simple as possible using a length changing mechanism of a support pillar used in a table for allowing the height of a top panel to be adjusted, and which can adjust an inclination of the top panel normally by a simple operation by a single user.SOLUTION: A table 1 includes a top panel 2, and a plurality of leg units U1-U4 having a support 5 and a leg part 6. The plurality of leg units U1-U4 is divided into a first leg unit group G1 along one long side edge a of the top panel 2 and a second leg unit group G2 along the other long side edge a. By separately operating a first operation part 301 provided corresponding to the first leg unit group G1 and a second operation part 302 provided corresponding to the second leg unit group G2, the length of the support 5 belonging to the first leg unit group G1 and the second leg unit group G2 can be separately changed and in the top panel 2, one side can be inclined with respect to the other side.SELECTED DRAWING: Figure 5

Description

The present invention relates to a table having a top plate, a plurality of columns that support the top plate and whose height can be changed by operation, and a foot that is connected to the lower end of the columns and supports the columns on the floor. ..

Conventionally, as a device such as an office desk, furniture, an installation table, or a work table (hereinafter, collectively referred to as a "table" in the present specification), a top plate for installing an object on the upper surface or performing various operations. And, in order to provide one or more columns to support the top plate, and to change the height of the top surface of the top plate to an appropriate height so that the user can install and work well. Those equipped with a height adjusting device for adjusting the height of the top plate have already been proposed.

In a single-person chair such as an office chair, or in a table with a relatively small top plate area such as a single-person or small display, a single support generally supports the seat or top plate of the chair. There has been proposed an elevating device that changes and adjusts the length of the column, that is, the height of the seat surface and the top plate, by operating the gas spring (also referred to as "gas cylinder") provided in the column. In such a chair or table elevating device, the support column is configured to be expandable and contractible by a cylindrical outer support column and an inner support column loosely inserted inside the cylindrical outer support column. By fixing each end of the gas spring to both the inner and outer columns and guiding both the inner and outer columns in the expansion and contraction direction by fitting the ridge and the concave groove, both the inner and outer columns are relatively non-rotatable and the top plate. Is trying to make it possible to adjust the height of the top plate by the expansion and contraction action of the gas spring while the rotation is stopped with respect to the support.

On the other hand, in the case of a table having a suitable top plate area, the top plate is generally supported by two or more columns having gas springs on at least one of the left and right sides of the table. (See Patent Document 1). In this top plate height adjusting device, the gas spring is rotatably supported at the lower end thereof, and has a special structure in which a support rod, a link, a roller, etc. are provided between the upper end of the gas spring and the table. .. Regarding the adjustment of the pushing force performed by changing the position of the upper end of the gas spring in one column, the movement of the above structure is interlocked with the structure on the other column side via the shaft member. The height of the top plate is adjusted by operating the gas springs provided on at least one of the left and right sides of the table with a pedal. It is not disclosed whether to adjust the tuning.

As an example of a top plate height adjusting device supported by two columns, there is one in which the lengths of the two columns can be changed and adjusted at the same time by one operation (see Patent Document 2). In this top plate height adjusting device, elevating columns suspended on both sides of the desk top plate are provided in the leg columns of the desk so that they can be moved up and down and cannot be moved back and forth. A swing plate is pivotally installed on an immovable member of a desk, linked by a chain via a plurality of pulleys pivotally attached to the member, the chain is connected to the swing plate, and further, the swing plate is connected to the swing plate. The screw shaft that faces up and down is pivotally installed so that it cannot move up and down, and the other end of the gas spring, one end of which is swingably attached to the immovable member of the desk, is attached to the adjusting bracket screwed to the screw shaft. It has a shaft-mounted structure. In the elevating table where the top plate is supported by multiple columns, in order to synchronize the top plate with all the columns and move it up and down smoothly, the timing of the start and end of the height adjustment operation of the columns and the operation of the height adjustment operation The amount needs to be tuned. The height adjusting mechanism of the top plate disclosed in Patent Document 2 requires a linking mechanism having a complicated structure for such a tuning operation, which causes labor and cost increase in manufacturing, assembly and adjustment. It has become.

Further, in the combination of the chair and the table, a table has been proposed in which the height and the front-rear position of the top plate are changed according to the inclined state of the back of the chair (Patent Document 3). The table is composed of two metal circular tubes bent into a U-shape and an inverted U-shape in a plan view, respectively, and has two support legs in which both metal circular tubes are connected by a plurality of connecting pieces. The two columns that support the top plate are rotatably supported for each support leg via the connecting unit. The connecting unit is mounted over the support legs so that the two columns rotate between the forward tilted position and the backward tilted position, respectively. Even if the two columns rotate between the forward tilt position and the backward tilt position, the top plate moves in parallel while being kept horizontal, so the table top plate is tilted backward according to the tilt of the chair. It is possible to move it downward.

Further, a workstation has been proposed in which the positions of a monitor and a keyboard can be changed according to the posture in which a user such as a personal computer sits on a chair (Patent Document 4). Even if the support arm corresponding to the leg is tilted, the holding portion moves in parallel while maintaining the horizontal state. The keyboard base is supported by the holding portion, and the elevation angle of the keyboard can be adjusted by tilting the keyboard base with respect to the holding portion. On this workstation, the keyboard stand is not directly supported by the support arm. In addition, the adjustment of the elevation angle of the keyboard stand requires a separate structure, and the details are unknown.

The present applicant has already proposed an elevating table provided with a top plate and a height adjusting device having two or three columns having a variable length to support the top plate (Patent Document 5). ). Each strut is equipped with a gas spring used for a chair or the like, and the length of the strut is variable by changing the length of the gas spring by pushing the push valve provided at the upper end of the strut. Generally, a structure is conceivable in which a single operating lever is operated to operate two gas springs at the same time. Is inevitable, and it is extremely difficult to balance such an error with the rigidity of the operating lever, which causes deformation and distortion during operation of the operating lever, for each table specification. That is, if the rigidity of the operating lever is too high, the error appears directly as a difference in the timing of pushing the push valve, and if the rigidity of the operating lever is too low, the operating amount of the operating lever is absorbed by deformation or distortion and pushes the push valve. As the timing varies, it is not possible to secure a sufficient pushing amount of the push valve, and as a result, it is difficult to raise and lower two or more gas springs by the same amount at the same time, that is, to perform a tuning operation.

Therefore, in the elevating table equipped with the above-mentioned height adjustment device, the operation performed by the user for adjusting the height of the top plate is one operation, but all the gas springs are synchronized. We are proposing an improvement in operability to adjust the height of the table by changing the length of the columns. That is, the operation path from one handle to the push valve of each support is intentionally included in the backlash, and when operating the handle, the push-down operation is started by all the push valves after all the backlash is absorbed. By doing so, the height adjustment operation synchronized with the timing and the amount of operation is obtained in all the columns.

The above-mentioned height-adjusting table does not disclose that the top plate is set to an arbitrary tilt angle, and does not have such an intention. Further, in the type in which the top plate is tilted with respect to a plurality of columns in order to change the front-rear position of the table, there are many cases in which the columns are formed into parallel links and the top plate is moved in parallel. On the other hand, as a simple example, the top plate is tilted rather than horizontal depending on the work content on the table, such as a drafting work table, a lectern, or an exhibition table / display table for goods and goods. May be preferable. In order to incline the top plate with respect to the columns that are moved in parallel links, a mechanism that allows the top plate to be tilted between the top plate and the top plate support provided at the top of the columns and holds it in the inclined state is provided. It is necessary, and the configuration of the upper part of the support column and the top plate support part has to be complicated.

Japanese Unexamined Patent Publication No. 11-127964 Japanese Unexamined Patent Publication No. 10-262741 Japanese Patent No. 4364981 Japanese Patent No. 3642391 Japanese Unexamined Patent Publication No. 2017-029453

Therefore, it is provided with a top plate, a plurality of columns that support the top plate and whose height can be changed by operation, and a foot portion that is connected to the lower end of the columns and supports the top plate and the columns on the floor. In the table, there is a problem to be solved in that the height and inclination of the top plate can be selectively adjusted or both can be easily adjusted.

An object of the present invention is to use a strut length changing mechanism such as that used for an elevating table in which the height of the top plate can be adjusted, so that the structure can be easily constructed and the user can be alone. It is also to provide a table that allows the height and tilt of the top plate to be selectively or both easily adjusted.

The table according to the present invention includes a top plate, a plurality of leg foot units, and a plurality of operation units, and the plurality of leg foot units have an upper end portion and a lower end portion, respectively, and the upper end portion thereof. The length in the direction connecting the lower end and the lower end can be changed, and the upper end is connected to the top plate, and the foot is connected to the lower end of the support and sits on the floor. The length of the support column of the plurality of leg / foot units is a table that is changed by the operation of any of the operation units of the plurality of operation units, and the plurality of leg / foot units are one. A first leg unit group containing one or more of the leg and foot units and arranged on one side of the top plate, and one or more of the leg and foot units included and arranged on the other side of the top plate. The operation unit belongs to any one group of the second leg and foot units, and the operation unit is the first for changing the length of the strut of the leg and foot unit belonging to the first leg and foot unit group. It has an operation unit and a second operation unit that can be operated independently of the first operation unit and for changing the length of the strut of the leg foot unit belonging to the second leg foot unit group. It consists of what you are doing.

As a basic structure, this table is equipped with a top plate, a plurality of leg and foot units having columns and feet, and a plurality of operation units, and the load of the top plate (including the weight placed on the top plate) is applied. It is supported on the floor by the feet via the stanchions. The stanchions and feet form a leg-foot unit, and the plurality of leg-foot units are arranged on one side of the top plate and the first leg-foot unit group and the other side of the top plate. It belongs to one of the second leg unit groups. That is, none of the struts belongs to either the first leg unit group or the second leg unit group, and does not belong to both leg unit groups in an overlapping manner. .. Moreover, it is not that there is no leg / foot unit belonging to any of the leg / foot unit groups. The length of the support of the leg / foot unit belonging to the first leg / foot unit group is variable by the operation of the first operation unit, and the length of the support of the leg / foot unit belonging to the second leg / foot unit group is the length of the support of the second operation unit. It is variable depending on the operation. By operating the first operation unit and the second operation unit separately, the length of the strut of the leg foot unit belonging to the first leg foot unit group and the length of the strut of the leg foot unit belonging to the second leg foot unit group can be reduced. Since it is changed individually, when changing the length of the strut of the leg foot unit belonging to the first leg foot unit group and the length of the strut of the leg foot unit belonging to the second leg foot unit group to different lengths, The top plate can be tilted relative to one side on the other side, or can be tilted while changing the height of the top plate, and when changing the length of both legs and feet units to the same length. The height of the top plate can be changed. Further, since the operation unit is divided into two operation units, a first operation unit and a second operation unit, when the size of the top plate is relatively narrow, both hands are used even if there is only one user. It is possible to adjust the height and inclination of the top plate by operating each operation unit using it, and if the top plate is wide, two people can operate the operation unit on each side to the sky. The height and inclination of the board can be adjusted.

In this table, the foot portion of each leg foot unit is attached to the support column and extends with the direction connecting between the one side and the other side of the top plate as the longitudinal direction. And, it is possible to provide a plurality of footing portions that are spaced apart from the foot body portion in the longitudinal direction and that are seated on the floor.
When the top plate is tilted so that the other side is tilted with respect to one side, the center of gravity of the table moves in the tilting direction, causing an imbalance in the load balance, and the table has one side of the top plate and the other. A moment in the direction of tilting, which is the direction connecting the side of the table, acts. By arranging the footing parts that sit on the floor of each foot part in an inclined direction, even if such a fall moment occurs, a moment that opposes the fall moment is obtained by the reaction force extending from the floor to the foot part. It becomes easier and the resistance to the table tipping can be increased.

In this table, the foot body portion of the foot portion is fixedly attached to the support column, and the foot portion of the foot portion has a protruding height toward the floor with respect to the foot body portion. It is variably attached, and the protruding height of the footing portion with respect to the foot body portion can be changed to a height corresponding to the inclination angle of the top plate.
Since the foot body is fixedly attached to the strut, when the top plate and the strut are tilted, the foot body is also tilted together with the strut. Since the foot body is attached with a variable protrusion height toward the floor with respect to the foot body, even if the foot body tilts according to the inclination of the top plate, the foot body can be tilted toward the floor. By adjusting the protrusion height, any footing portion can be seated on the floor in the original sitting mode, and the load of the table can be transmitted to the floor.
In this case, it is preferable that each footing portion includes a joint structure such as a ball joint, and even if the foot body portion is inclined together with the support, each footing portion is seated on the floor surface in the original manner.

In this table, the foot body portion is attached so that the attachment angle can be changed with respect to the lower end portion of the support column, and the attachment angle of the foot body portion to the support column corresponds to the inclination angle of the top plate. Can be changed to an angle.
Since the mounting angle of the foot body to the lower end of the column can be changed, even if the column tilts according to the inclination of the top plate, the mounting angle of the foot body to the column should be changed according to the inclination. Therefore, any of the footing portions can be seated on the floor in the original sitting mode, and the load of the table can be transmitted to the floor. Since the foot body portion and the foot portion may have an integrated structure, the foot portion can be configured into a simple structure.

In this table, two or more of the leg and foot units belong to the first leg and foot unit group, and two or more of the leg and foot units belong to the second leg and foot unit group. The stanchion of the limb unit belonging to the limb unit group is arranged in a common first stanchion arrangement surface, and the stanchion of the limb unit belonging to the second limb unit group is a common second stanchion. It is arranged in the arrangement surface, and the first support column arrangement surface and the second support column arrangement surface can be considered to be parallel to each other.
When the length of the support of the leg / foot unit belonging to the first leg / foot unit group is changed by operating the first operation unit, the leg / foot unit belongs to the first leg / foot unit group and is arranged in the common first support support surface. All the columns are synchronized and adjusted to the same length. Even when the length of the column of the leg / foot unit belonging to the second leg / foot unit group is changed by operating the second operation unit, the leg / foot unit belongs to the second leg / foot unit group and is arranged in the common second support column arrangement surface. All the columns are synchronized and adjusted to the same length. When the length of the strut of the leg foot unit belonging to the first leg unit group and the length of the strut of the leg foot unit belonging to the second leg unit group are the same, the height of the top plate is changed and both. When changing the length to a different length, the top plate can be tilted according to the difference in length, or the height of the top plate can be changed and tilted.

In this table, the foot portion attached to the support of the leg / foot unit belonging to the first leg / foot unit group and the support of the leg / foot unit belonging to the first leg / foot unit group are attached to the support. The feet can be connected by the connecting member in a state of absorbing the relative position change caused by the inclination of the top plate of both feet.
As for the connecting member, the foot portion of the strut of the leg foot unit belonging to the first leg foot unit group and the foot portion of the strut of the leg foot unit belonging to the second leg foot unit group approach each other according to the inclination of the top plate. Since the legs are connected in a state of absorbing changes in the relative spacing and rotation of the separated legs, it is possible to prevent displacement and deformation of the legs so that the spacing and rotation change further from the connected state. In the connected state, it is possible to suppress displacement and deformation such that both feet are relatively laterally displaced or twisted, and it is possible to increase the rigidity of the leg-foot structure and contribute to stability.

In this table, the leg-foot unit includes at least four leg-foot units arranged corresponding to each of the four vertices of the parallel quadrilateral, with the one side of the top plate. The other side is the side of one side and the side of the other side for each of the two pairs of opposite sides of the parallel quadrilateral, and the legs on each of the two sets of sides of the top plate. The foot unit may be defined with the first leg unit group and the second leg unit group, and the operation unit may be provided with the first operation unit and the second operation unit.
According to this table, one side and the other side of the top plate are the side of one side and the side of the other side for each of the two pairs of opposite sides of the parallelogram. There are two sets, one on one side and the other on the other. For the four leg / foot units, two leg / foot unit groups can be defined for each set of the top plate. As for the operation unit, a first operation unit and a second operation unit for operating the two leg / foot unit groups are provided for each set of the top plate. That is, since there are two sets of operation units for the first operation unit and the second operation unit, when the top plate is tilted, the set to be operated according to the tilt direction selected from the two tilt directions. The operation unit can be selected.

In this table, each of the leg and foot units includes a top plate receiving structure attached to the top plate and the upper end portion of the support column in order to connect the upper end portion of the support column to the top plate. In the top plate receiving structure corresponding to the four leg / foot units, the operating portion of any one of the one set and the operating portion of any of the other set are extended, respectively. By operating the operation unit, the length of the support column to which the upper end portion is attached to the top plate receiving structure can also be changed.
According to this table, in order to support the top plate, in the top plate receiving structure attached to the upper end of each column corresponding to the four vertices (four corners) of the parallelogram, along the two sides sandwiching the four corners. One of the operating parts of one set and one of the operating parts of the other set, which are arranged respectively, are extended. The length of each column corresponding to the four corners can be changed by operating from any of the operation units on both sides. Therefore, since the top plate can be operated for either one side and the other side of the two sets, the top plate should be tilted in one of the two tilting directions selected. Can be done.

In this table, the foot can be rotatably attached to the strut so that the direction in which the foot body extends follows the tilting direction, depending on the selected tilting direction.
According to this table, by rotating the foot with respect to the support, the direction in which the foot body of the foot extends can be adjusted to the direction following the inclination direction of the top plate, so that one side and the other of the two sets can be adjusted. To make it easier to counter the overturning moment of the table due to the tilt, regardless of whether it is tilted for any side of the table or for any side of the selected set. Can be done.

In this table, the length of the strut of the leg unit belonging to the first leg unit group and the length of the strut of the leg unit belonging to the second leg unit group are changed to the same length. Therefore, the height of the top plate can be changed.
Although it has four columns, it may be a horizontally long table that one person cannot operate both operation units at the same time, but even if two people operate it, the height can be changed by operating the same amount. be able to.

Since this table is configured as described above, it can exert the following peculiar effects.
That is, this table is provided with a top plate, a plurality of leg / foot units having columns and feet, and a plurality of operation units as a basic structure, but the plurality of leg / foot units are one of the top plates. It belongs to either one of the first leg unit group arranged on the side and the second leg unit group arranged on the other side of the top plate. The length of the struts of the leg-foot unit belonging to the first leg-foot unit group can be changed by the operation of the first operation unit, and the struts of the leg-foot unit belonging to the second leg-foot unit group are lengthened by the operation of the second operation unit. Is variable. By operating the first operation unit and the second operation unit separately, the length of the support of the leg foot unit belonging to the first leg unit group and the length of the support of the leg foot unit belonging to the second leg unit group can be reduced. Since each is changed, the height of the table is changed if the changed lengths are the same, and if the changed lengths are changed, the top plate is relative to one side and the other side. It can be tilted to, or the height can be changed and tilted. Since the operation unit is divided into two operation units, the first operation unit and the second operation unit, height adjustment and tilt adjustment can be performed by operating each operation unit when one user reaches both operation units. Is possible. Further, two people may operate each operation unit. Each of the first operation unit and the second operation unit is a column length changing mechanism used for an elevating table in which the height of the top plate can be adjusted, and the length changing mechanism of the column is used. By individually operating the first operation unit and the second operation unit while constructing the structure as easily as possible, it is possible to provide a table in which the height and inclination of the top plate can be easily adjusted. ..

FIG. 1 is a diagram showing an embodiment of a table according to the present invention. FIG. 2 is a perspective view showing a part of the table shown in FIG. 1 when viewed from the back side. FIG. 3 is a diagram illustrating the structure of the leg / foot unit of the table shown in FIG. FIG. 4 is a diagram showing an operation unit of the table shown in FIG. FIG. 5 is a diagram illustrating the inclination of the top plate of the table shown in FIG. FIG. 6 is a perspective view showing another embodiment of the table according to the present invention. FIG. 7 is a diagram illustrating a connection structure between the foot portion and the support column of the leg-foot structure shown in FIG. FIG. 8 is a perspective view showing another embodiment of the table according to the present invention. FIG. 9 is a perspective view showing another embodiment of the table according to the present invention. FIG. 10 is a perspective view showing still another embodiment of the table according to the present invention. FIG. 11 is a perspective view showing the operation unit and the top plate receiving structure in the embodiment shown in FIG. FIG. 12 is a diagram illustrating the rotational arrangement of the foot portion in the leg-foot structure according to the present invention. FIG. 13 is a schematic diagram showing still another embodiment of the table according to the present invention. FIG. 14 is a schematic view showing still another embodiment of the table according to the present invention, in which the table shape is different.

Hereinafter, examples of the table according to the present invention will be described with reference to the attached drawings. 1 to 5 are diagrams showing an embodiment of this table. FIG. 1 is a perspective view and a side view of the embodiment of the table according to the present invention, FIG. 2 is a perspective view showing a part of the table when viewed from the back side, and FIG. 3 is a leg foot unit of the table, that is, A figure showing a leg-foot structure including a support and a foot, and a top plate receiving structure connecting the top plate and the support, FIG. 4 is a diagram showing an operation part of this table, and FIG. 5 is a view showing an inclination of the top plate for this table. It is a figure explaining.

1A and 1B show an embodiment of a table according to the present invention, in which FIG. 1A is a perspective view showing a state in which the height of the top plate is raised and is in a horizontal state, and FIG. 1B is a side view thereof. (C) is a side view in which the height of the top plate is lowered while maintaining the horizontal state. The table 1 is operated based on the top plate 2, the leg-foot structure 3 that supports the top plate 2 with respect to the floor surface F, and the operation unit for inclining the top plate 2 (details are based on FIGS. 2 and 4 and the like). It is composed of (described later as a part 30). The top plate 2 can be manufactured from various materials such as wood, resin, metal, and glass.

In the case of this embodiment, the top plate 2 is one of the most commonly used tables for office work or work, which is a rectangular top plate when viewed in a plane. The top plate 2 is supported on the floor surface F by a leg foot structure 3 composed of four leg foot units U1 to U4 provided one by one corresponding to the four corners of the top plate 2. Each leg unit U1 to U4 includes a support column 5 having an upper end portion attached to a top plate 2 and having a variable length, and a foot portion 6 attached to a lower end portion of the support column 5. When the upper end of the support column 5 is attached to the top plate 2 via the top plate receiving structure 4 attached slightly inside each corner of the top plate 2, each leg foot unit U1 to U4 has a top plate receiving structure. 4 can be included. The load of the top plate 2 and the mounted object placed on the top plate 2 is transmitted from the top plate receiving structure 4 to the support column 5, and the load applied to the support column 5 is supported by the floor surface F via the foot portion 6. In this embodiment, as shown in FIGS. 1B and 1C, each support column 5 is attached to the top plate receiving structure 4 at the upper end portion 5a thereof, and the foot portion at the lower end portion 5b thereof. It is attached in a manner of being erected with respect to 6. In each leg / foot unit U1 to U4 of the leg / foot structure 3, the top plate receiving structure 4, the support column 5, and the foot portion 6 basically have the same structure. Therefore, the leg and foot units U1 to U4 at the four corners have the same structure except that the arrangement directions of the columns 5 around the vertical axis are different.

In this embodiment, the four leg / foot units U1 to U4 are two leg / foot unit groups formed along the long side edges a and a, that is, the first leg / foot unit group G1 and the second leg / foot. It is divided into unit groups G2. Each leg / foot unit U1 to U4 belongs to one of the leg / foot unit group, the first leg / foot unit group G1 and the second leg / foot unit group G2. That is, the first leg unit group G1 is arranged along one long side edge a side of the top plate 2 (the front side in FIG. 1A and the left side in FIGS. 1B and 1C). The second leg unit group G2 consists of two leg units U1 and U2, and the second leg unit group G2 consists of two leg units U3 and U4 arranged along the other long side edge a side of the top plate 2. There is. There are no struts that overlap in both leg / foot unit groups G1 and G2, and there are no leg / foot units that do not belong to either leg / foot unit group G1 or G2. In this embodiment, the first leg unit group G1 and the second leg unit group G2 are basically symmetrically arranged with respect to the vertical plane including the horizontal center line LL connecting the intermediate positions of the short side edges b and b. It has become. When the lengths of all the leg and foot units U1 to U4 (that is, the lengths of the respective columns 5) are equal, the top plate 2 is in the horizontal state.

The longitudinal center line of each leg unit U1 to U4 attached to the top plate 2 via the top plate receiving structure 4 (corresponding to the longitudinal center line of the support column 5) is a plane defined by the top surface of the top plate 2. The top plate 2 and the leg and foot units U1 to U4 always intersect each other vertically. As shown in FIGS. 1B and 1C, the columns 5 and 5 belonging to the first leg unit group G1 are arranged in the common first column arrangement surface P1 parallel to one of the long side edges a. The columns 5 and 5 belonging to the second leg unit group G2 are arranged in the common second column arrangement surface P2 parallel to the other long side edge a. The first support column arrangement surface P1 and the second support column arrangement surface P2 are parallel to each other. The struts 5 and 5 of the leg foot units U1 and U2 belonging to the first leg foot unit group G1 are adjusted to the same first length by synchronizing operations, and the leg foot units U3 and U4 belonging to the second leg foot unit group G2. The columns 5 and 5 of the above are tuned to the same second length. When the first length and the second length are made different, the top plate 2 is adjusted to the inclined state. When the table 1 is to be tilted, the top plate 2 is tilted in the tilt direction as shown by an arrow T in FIG. 1A by the operation of the operation unit 30. That is, in the case of this embodiment, the inclination of the top plate 2 is an inclination in such a manner that the short side edges b and b are inclined in the vertical direction while the horizontal state of the long side edges a and a is maintained.

In the table 1, the top plate 2 is supported on the floor surface F by the foot portions 6 provided at the lower ends of the columns 5 of the leg foot units U1 to U4 arranged at the four corners thereof. Each foot portion 6 has a single square tubular foot body portion 7 fixedly attached to the lower end portion 5b of the corresponding strut 5, and the strut 5 in the longitudinal direction thereof with respect to the foot body portion 7. It is provided with a plurality of (two in this example) footing portions 8 and 8 that are spaced apart from each other and are seated on the floor surface F. Assuming that the top plate 2 is tilted, the foot body 7 extends in a direction parallel to the short edge b, b of the top plate 2 corresponding to the tilting direction.

In each foot portion 6, one foot portion 8 penetrates the foot body portion 7 and extends upward, and is attached to the foot body portion 7 in the height direction in response to the case where the top plate 2 is tilted. The position can be changed by the foot shaft 9. One footing portion 8 has a variable protrusion height toward the floor surface F side according to the angle at which the top plate 2 is tilted with respect to the foot body portion 7, while the other footing portion 8 has a foot. It does not penetrate the main body portion 7 and is fixed so as to be embedded in the foot main body portion 7. When it is assumed that the top plate 2 is tilted so that the second leg unit group G2 side is lifted, long foot shafts 9 and 9 penetrating the foot body 7 are adopted in both footing portions 8 and 8. ..

The feet 6 and 6 (first foot group 6G1) attached to the two columns 5 and 5 of the foot units U1 and U2 belonging to the first leg unit group G1 are connected to each other by a long foot connecting part 10. The foot connecting portion 10 enhances the unity (rigidity) of the first leg unit group including the leg units U1 and U2. The foot parts 6 and 6 (second foot part group 6G2) connected to the foot foot units U3 and U4 belonging to the second leg foot unit group G2 are also enhanced in integrity (rigidity) by another foot connecting part 10. There is. The foot connecting portions 10 and 10 are manufactured so as to be curved so as to be close to the center side, and the foot connecting portions 10 and 10 are shaped so as not to interfere with the feet of the user who uses the table 1. There is. As long as it does not interfere with the feet of the user who uses the table 1, straight foot connecting portions 10a and 10a may be used as shown by the imaginary line. The foot connecting portions 10a and 10a can be made of a bar or a tubular material having an appropriate cross-sectional shape. Further, the partner for attaching each support column 5 to the foot portion 6 may be the foot connecting portions 10 and 10 connecting the foot portions 6 and 6 instead of the foot main body portions 7 and 7 of the foot portions 6 and 6 themselves. ..

As will be described later, the support column 5 includes an outer cylinder body 11 and an inner cylinder body 12 that are fitted in a nested manner, and the outer cylinder body 11 and the inner cylinder body 12 sufficiently secure the length of the support column 5. If this is not possible, a joint cylinder 5c for addition to the outer cylinder 11 can be used (see FIG. 7 for details). Since the length of the support column 5 is variable, each support column 5 is provided with a lock structure 17 so that the support column 5 can maintain its length. As the lock structure 17, a well-known structure that grips the inner cylinder 12 at the upper end of the outer cylinder 11 can be used. Although details are not shown, a structure in which a cam member provided inside the outer cylinder 11 is pressed against the outside of the inner cylinder 12 and gripped, and an inner peripheral surface of the lock structure 17 attached to the outer cylinder 11 It is also possible to adopt a structure in which the inner cylinder 12 is gripped by friction against the peripheral surface of the inner cylinder 12. Further, as in the lock structure 17a shown in FIGS. 3A and 3B, a machine screw is screwed into a cover body attached to the upper end of the outer cylinder 11, and the tip of the machine screw is placed on the outside of the inner cylinder 12. You may use the structure which presses against. By using the lock structures 17 and 17a, it is possible to prevent the length of the column 5 from being unintentionally shortened such that the inner cylinder 12 is lowered into the outer cylinder 11 even when a large load is applied to the top plate 2. can.

FIG. 2 is a partial perspective view of the tilt-adjustable table 1 shown in FIG. 1 when viewed from the back side. In FIG. 2, the same reference numerals as those used in FIG. 1 are used for the elements and parts equivalent to those shown in FIG. 1. The leg-foot units U1 and U2 belonging to the first leg-foot unit group G1 corresponding to one long-side edge a are provided with one lever-shaped first operation unit 301 along the one long-side edge a. For the leg foot units U3 and U4 belonging to the second leg foot unit group G2 corresponding to the other long side edge a, the same lever-shaped second operation unit 302 corresponds to the other long side edge a. (The operation unit 301 and 302 are collectively referred to as the operation unit 30). By individually operating the first operation unit 301 and the second operation unit 302 in the two leg foot unit groups G1 and G2, the struts 5, 5 and the first of the leg foot units U1 and U2 belonging to the first leg foot unit group G1. The columns 5 and 5 of the leg foot units U3 and U4 belonging to the two leg foot unit group G2 can be operated separately. According to the operation unit 30, there is a gas spring as a support mechanism for adjusting the length of the support columns 5 and 5 of the two leg foot units belonging to each leg / foot unit group G1 and G2, and more specifically, a push valve provided in the gas spring. It is operated in synchronization. Details of each operation unit 30 will be described later with reference to FIGS. 3 and 4.

FIG. 3 shows the details of the table support, the top plate receiving structure and the foot portion related thereto. In FIG. 3, the same reference numerals as those used in FIG. 1 are used for the elements and parts equivalent to those shown in FIG. 1. FIG. 3 (a) is a diagram showing a leg-foot unit, that is, a leg-foot structure including a support and a foot portion and a top plate receiving structure, and FIG. 3 (b) shows an interval between the two for connecting the top plate and the support. 3 (c) is an enlarged cross-sectional view showing the details of the foot portion, which is an enlarged view showing the details of the top plate receiving structure 4 interposed therebetween. As shown in FIGS. 3A and 3B, each support column 5 of the leg / foot unit (the one shown in the figure is the leg / foot unit U2) is inserted and fitted in a nested manner as a support mechanism for adjusting the length of the support. The cylinder body (outer cylinder body 11 and inner cylinder body 12 serving as a gas spring cover) is provided, and the gas spring 13 is built in the inner cylinder body 12. The outer cylinder 11 and the inner cylinder 12 are vertically (erected vertically) due to a sliding structure of a vertical groove formed at the upper end of the outer cylinder 11 and a convex shape of the inner cylinder 12, for example. It is relatively slidable while being guided in the direction). Although not shown, the lower end of the inner cylinder 12 is slidable with respect to the inner peripheral surface of the outer cylinder 11 via a slider. The lock structure 17a of the outer cylinder 11 and the inner cylinder 12 has already been described. In the example shown in FIG. 3, the joint cylinder 5c for increasing the length of the support column 5 is not used.

The outer cylinder 11 (when the joint cylinder 5c is connected under the outer cylinder 11) stands on the foot body 7 at the lower end 14 (corresponding to the lower end 5b of the support column 5). It is attached in the form of installation. The top plate receiving structure 4 attached to the lower surface of the top plate 2 and the upper end portion 15 of the inner cylinder 12 (corresponding to the upper end portion 5a of the support column 5) are made of iron or polypropylene reinforced with glass fiber or the like. The resin may be manufactured separately, and may be assembled by a fixing tool such as a blind rivet, or may be manufactured by integral molding. The structure of each support column 5 is the same as that disclosed in the application already filed (Japanese Patent Laid-Open No. 2017-029453) as an elevating table by the present applicant.

Each column 5 has a built-in gas spring 13 whose length can be changed by being operated by the operation unit 30. Although not particularly shown, the gas spring 13 uses a well-known structure including a cylinder and a piston rod that can move forward and backward by sliding with respect to the cylinder, for example, as used in the field of chairs. be able to. Regarding the gas spring 13, the lower base end portion of the cylinder is fixed to the lower end portion 14 of the outer cylinder body 11, and the upper end portion of the piston rod is fixed to the upper end portion 15 of the inner cylinder body 12. The load acting on the top plate 2 is transmitted from the top plate receiving structure 4 directly attached to the top plate 2 to the floor surface F via the stanchion 5 and the leg foot structure 3. That is, the load is supported on the floor surface F at the foot portion 6 of the leg-foot structure 3 via the gas spring 13 and the outer cylinder body 11 from the inner cylinder body 12 in each support column 5.

Referring to FIGS. 3A and 3B, the top plate receiving structure 4 has a substantially U-shaped gutter structure or a square dish structure as a whole, and forms a central recess 21 inside. Is provided with a dish-shaped side wall portion 22 and a bottom wall portion 23. A flange portion 26 which is a flat surface is connected to the upper end of the side wall portion 22, and the flange portion 26 is appropriately used as a blind rivet in a state where the flat surface of the flange portion 26 is in contact with the lower surface of the top plate 2. The top plate receiving structure 4 is attached to the top plate 2 by attaching the top plate 2 to the top plate 2 by the fixing tool 24 (only a part thereof is designated with a reference numeral). The top plate receiving structure 4 may be integrally formed with the side wall portion 22 and the bottom wall portion 23, or may be separately manufactured and fixed with a fixing tool such as a blind rivet. The top plate receiving structure 4 may be fixed to the top plate 2 from the back surface side at an appropriate position on the side wall portion 22. That is, by applying the top plate receiving structure 4 to the back surface side of the top plate 2 and piercing the blind rivet into the back surface of the top plate 2 through the side wall portion 22, the rivet does not protrude to the front surface side of the top plate 2 and the top plate receiving is received. The structure 4 can be attached to the top plate 2. The upper end portion 15 of the inner cylinder body 12 of the support column 5 is fixed to the bottom wall portion 23 in a state of penetrating the bottom wall portion 23 of the central recess 21 of the top plate receiving structure 4. Although the top plate receiving structure 4 is another embodiment, a perspective view is also shown in FIG.

In order to operate the gas spring 13, the upper end of the piston rod penetrates the upper end 15 of the inner cylinder 12 and protrudes into the internal space defined by the central recess 21 of the top plate receiving structure 4, and pushes the gas spring 13. It is exposed in the internal space as a valve 16. In order to operate the exposed push valve 16, the operation tip portion of the operation unit 30 extends inside the top plate receiving structure 4. By pushing the push valve 16 by the operation of the operation unit 30, the movement of the gas in the gas spring 13 is controlled, and the piston rod advances or retracts from the cylinder. Due to such an operation of the gas spring 13, the inner and outer cylinders 11 and 12 expand and contract, and the length of the support column 5 is changed. The gas pressure (5 kg, 8 kg, 10 kg, 20 kg, etc.) in the gas spring 13 is adjusted according to the weight placed on the top plate 2 of the table 1. The structure (connecting tool 34, lever fulcrum portion 35, etc.) in the top plate receiving structure 4 of the operating portion 30 for operating the gas spring 13 will be described later with reference to FIG. 4 (FIG. 11).

FIG. 3 (c) shows the foot portion 6 of the leg-foot structure 3 in an enlarged manner. FIG. 3C shows one foot portion 6 attached to one support column 5, but the other foot portions have the same structure. In the illustrated example, the two footing portions attached to the foot body portion 7 of the foot portion 6 include a footing portion 8a having a long foot shaft 9a and a footing portion 8b having a short foot shaft 9b. .. The foot shaft 9a of the footing portion 8a on one side is longer than the foot shaft 9b of the footing portion 8b on the other side. This will be described later, but it is assumed that the top plate 2 is in an inclined state in which the G1 side of the first leg unit group is lifted. By lifting from the shaft 9b side. A seating body 8c that sits on the floor surface F is attached to the lower ends of the foot shafts 9a and 9b, respectively. The seating body 8c is formed in a substantially conical body, is in contact with the floor surface F with a wide seating surface, and the circumference of the seating surface is formed to be rounded in consideration of contact with the floor surface F. ..

When the top plate 2 is set to the inclined state, the center of gravity of the table 1 as a whole moves in the inclined direction, causing an imbalance in the load balance, and the table 1 tends to fall in the inclined direction as a whole. An overturning moment is generated. The fixed position of the support column 5 with respect to the foot body portion 7 is set to be a position biased toward the side lifted by the inclination (the footing portion 8a side) with respect to the central position in the longitudinal direction of the foot body portion 7. By fixing the strut 5 to the foot body 7 at an unbalanced position, the distance d2 from the connecting position of the strut 5 in the foot body 7 to the footing portion 8b extending to the tilting down side is extended to the tilting up side. The distance to the foot portion 8a is longer than the distance d1, and the foot portion 8b on the downward slope side can be attached to a position farther from the support column 5.

With this configuration, when the table 1 is tilted, it counteracts the overturning moment acting on the table 1 based on the reaction force from the floor surface F acting on the footing portion 8b on the descending side of the tilt. It becomes easy to obtain a large moment. That is, the landing portions 8a and 8b of each foot portion 6 are spaced apart in the longitudinal direction following the tilting direction so as to sandwich the lower end portion 5b of the strut 5, and the landing portion extends downward from the lower end portion 5b of the strut 5. By arranging a large distance to the foot portion 8b, even if an overturning moment occurs on the table 1, the overturning moment is countered based on the reaction force acting on the foot portions 8a and 8b from the floor surface F. It becomes easy to obtain a moment, and the resistance to the fall of the table 1 can be increased.

As for the longer foot shaft 9a, as an example, as shown in FIG. 3 (c), the foot body 7 is placed on the upper side with two nuts 41 and 42 configured on the screw shaft 40 and screwed onto the screw shaft 40. By sandwiching the foot shaft 9a from below, the foot shaft 9a can be fixed to the foot body 7 at an arbitrary height position in the axial direction. It is preferable to prevent loosening by inserting washers 43 and 44 between the nuts 41 and 42 and the foot body 7. The shorter foot shaft 9b may be similarly configured as a screw shaft 45 and fixed to the foot body 7 by screwing the screw shaft 45 into the screw hole 46 formed in the foot body 7. By using a joint structure such as a ball joint 47 at the connecting portion between the foot shafts 9a and 9b and the seating body 8c, the seating body 8c faces the floor surface F even if the foot shaft 9a or 9b is tilted, that is, , Can be seated in its original form. For the shorter foot shaft 9b, a plurality of screwing positions (for example, a plurality of screw holes 46a are formed in advance) in which the footing portion 8b can be screwed into the foot body portion 7 are prepared or attached. The foot portion 8b may be made slidable with respect to the foot body portion 7, and the mounting position may be selected according to the degree of inclination to be used.

The lengths of the columns 5 and 5 of the first and second leg units U1 and U2 belonging to the first leg unit group G1, and the third and fourth leg units U3 and U4 belonging to the second leg unit group G2. In order to change the lengths of the columns 5 and 5 separately (independently) from each other for the leg and foot unit groups G1 and G2, and to change them in synchronization with each other in each leg and foot unit group G1 and G2. The foot unit group G1 is provided with an operation unit 301, and the leg unit group G2 is provided with an operation unit 302 (see FIG. 2). When the user operates the operation units 301 and 302 separately, the lengths of the columns 5 and 5 of the first and second leg units U1 and U2 belonging to the first leg unit group G1 are synchronized and the same. The length is changed so that the length is the same, and the lengths of the columns 5 and 5 of the third and fourth leg units U3 and U4 belonging to the second leg unit group G2 are also synchronized to the same length. To change. Since the operation units 301 and 302 can be operated independently of each other, the lengths of the columns 5 and 5 belonging to the first leg and foot unit group G1 and the lengths of the columns 5 and 5 belonging to the second leg and foot unit group G2 belong to the second leg and foot unit group G2 according to the operation amount. The lengths of the columns 5 and 5 can be changed to different lengths, thereby tilting the top plate 2 relative to one side or changing the height of the top plate 2. It can be further tilted. Even if there is only one user, the inclination of the top plate 2 can be adjusted by individually operating both the operation units 301 and 302 using both hands. The height of the top plate 2 is adjusted when both the operation units 301 and 302 are operated by the same amount.

FIG. 4 shows the details of the operation unit provided for tilting the table. FIG. 4A is a perspective view showing the entire operation unit and the top plate receiving structure with the back side facing up, and FIG. 4B is a part and one of the operation unit shown in FIG. 4A. It is a perspective view of the top plate receiving structure seen from the front side, and FIG. 4C is a partial cross-sectional view showing the details of an L-shaped connector. Regarding the operation units 301 and 302, for the sake of simplicity, only one operation unit (referred to as a generic reference including each component as the operation unit 30) will be described. The operation unit 30 includes a handle portion 31 extending straight along the long side edge a (see FIG. 2) and all columns 5 belonging to the same leg / foot unit group from the handle portion 31 (two columns in this example). The operation rods 32 and 32 that individually extend into the top plate receiving structure 4 corresponding to the above and can operate the gas spring 13 (see FIG. 3A) are provided. Operation rod portions 32, 32 are provided on each side in the left-right lateral direction from the handle portion 31, and each operation rod portion 32 is provided at the tip of the first rod portion 33a extending linearly and the tip of the first rod portion 33a. It has an L-shaped connector 34 and a second rod 33b extending vertically (hence, in a direction orthogonal to the first rod 33a) into the top plate receiving structure 4 from the connector 34. There is. The first rod portion 33a and the second rod portion 33b constitute a plurality of rod portions (collectively designated by the reference numeral "33") connected by the connector 34. The handle portion 31 may have a shape (shown by an imaginary line) protruding toward the front side so that the user can easily grasp it by hand, instead of the form extending straight.

As shown in FIGS. 4 (a) and 4 (b) (similarly, FIGS. 1 (b) and 1 (c)), the operation unit 30 includes the axis of the handle unit 31, the first rod portions 33a and 33a, and the connector 34. , 34 and the axes of the operating rods 32, 32 including the second rods 33b, 33b are configured to be in one common plane. By configuring the axis of the operation unit 30 so as to be in one common plane, structural errors and backlash of the operation unit 30 are reduced, and the accuracy of operation when operating the operation unit 30 is increased. Each second rod portion 33b penetrates a long hole 25 formed vertically in the dish-shaped side wall portion 22 of the top plate receiving structure 4 and extends into the central recess 21 of the top plate receiving structure 4, and is central. The tip portion of the second rod portion 33b protruding into the recess 21 is a flat processed gas spring operating portion 36. The second rod portion 33b is supported by a lever fulcrum portion 35 having an intermediate length so as to be tiltable up and down with respect to the top plate receiving structure 4. When the handle portion 31 is grasped by hand and the operation portion 30 is operated in a direction closer to the top plate 2 (in the back of the paper surface in FIG. 4A), the second rod portion 33b of each operation rod portion 32 has a top plate receiving structure. With the lever fulcrum portion 35 as a fulcrum, the lever operates to rotate with respect to 4, and the gas spring operating portion 36 comes into contact with the push valve 16 of the gas spring 13. Both operating rod portions 32, 32 can simultaneously push the push valves 16 and 16 downward to operate both gas springs 13 and 13. Regarding the top plate receiving structure 4, the bottom wall portion 23, the flange portion 26, and the fixing tool 24 in the drawing are as already described in FIG.

As shown in FIG. 4C, the L-shaped connector 34 is formed with holes 34a and 34a at its two ends into which the first rod portion 33a and the second rod portion 33b are inserted. Each hole 34a has an inner diameter into which the first rod portion 33a and the second rod portion 33b can be inserted, and is adjusted between the end faces of the first rod portion 33a and the second rod portion 33b and the bottom of each hole, respectively. It is formed so that sufficient gaps Ga and Gb are left for use. The connector 34 is formed with screw holes 34b, 34b so as to intersect and open the holes 34a, 34a from the outside thereof. By screwing the machine screws 34c, 34c into the screw holes 34b, 34b, the tips of the machine screws 34c, 34c come into contact with the first rod portion 33a and the second rod portion 33b inserted into the holes 34a, 34a, and the first rod portion The 33a and the second rod portion 33b can be fixed to the connector 34 at their positions and postures. The fitting 34 is made of metal or nylon so as to have rigidity and strength to the extent that it is not substantially deformed by a normal operating force, and so that the thread grooves of the screw holes 34b and 34b are not easily crushed. , (Glass fiber reinforced) Made of resin such as polypropylene (integral molding) is preferable.

In the manufacture of the operation unit 30, for example, the handle portion 31, the first rod portions 33a, 33a and the second rod portions 33b, 33b are accurate in one plane due to inaccuracies in processing or assembly. The first rods 33a and 33a are not exactly aligned in one common line, and the second rods 33b and 33b are not parallel to each other. Assembly errors may occur. In such a case, it is difficult to synchronize the operations of the push valves 16 and 16 of the gas springs 13 and 13 by operating only the handle portion 31, that is, to operate the same amount at the same time. Further, when the first rod portions 33a, 33a and the second rod portions 33b, 33b are manufactured as a continuous integral body from one rod-shaped body without using the connecting tools 34, 34, one of the first and second rod portions 33a, 33a is manufactured. It is difficult to accurately manufacture the set of the rod portions 33a and 33b and the other set of the first and second rod portions 33a and 33b so as to be in one common plane. Further, if the rigidity of the rod-shaped body as an integral body is increased, the timing of pushing the push valves 16 and 16 of both the gas springs 13 and 13 is deviated, and it becomes difficult to perform the synchronized operation. On the contrary, if the rigidity of the rod-shaped body as an integral body is lowered, a large bending or twisting deformation is likely to occur at the bent portion from the first rod portion 33a to the second rod portion 33b, and the amount of operation in the handle portion 31 is increased. However, the operation amount is not transmitted to the second rod portions 33b and 33b, and the push valves 16 and 16 of both gas springs 13 and 13 cannot be sufficiently pushed. In such a case, it may take time to change the height of the top plate 2.

According to the operation unit 30 of the present embodiment, by using the connector 34, the connector 34 is rotated about two axes (first rod) before being fixed to the first rod portion 33a and the second rod portion 33b. Rotation is allowed in the axial rotation θ of the portion 33a and the axial rotation δ of the second rod portion, and also in the state before fixing, the axial direction X of the first rod portion 33a and the axial direction of the second rod portion. It is also allowed to move to Y within the range allowed by the gap Gb of the gap Ga, respectively. In order to allow such rotation and movement, the handle portion 31 of the operating lever 30 is operated with the machine screws 34c and 34c loosened to form the first rod portions 33a and 33a with respect to the fittings 34 and 34. By adjusting the insertion amount and angle of the second rod portions 33b and 33b, the gas spring operating portions 36 and 36 at the tips of the second rod portions 33b and 33b abut on the push valves 16 and 16 of the gas springs 13 and 13. It can be in a state (only in contact but not pushed in). When the machine screws 34c and 34c are screwed in this contact state, the first rod portions 33a and 33a and the second rod portions 33b and 33b are connected to the connector 34, even after the operation of the operating lever 30 is released. Fixed to 34, the operating unit 30 can hold an integral structure. When the user operates the operation unit 30 after absorbing such a gap, the fittings 34 and 34 have high rigidity against bending and twisting deformation, so that the handle unit 31 has a high rigidity. One operation is transmitted to the gas spring operating portions 36 and 36 of the second rod portions 33b and 33b without being absorbed in the middle, and the push valves 16 and 16 of both gas springs 13 and 13 are synchronized, that is, simultaneously. The same amount can be pushed in by contacting the push valves 16 and 16. In this way, even if the handle portion 31, the first rod portions 33a, 33a, and the second rod portions 33b, 33b do not have accurate alignment and parallelism at the time of manufacturing, a manufacturing error consisting of machining errors and assembly errors can be generated. The operation unit 30 can be assembled to the top plate receiving structures 4 and 4 in the absorbed state.

The configuration of the operation rod portion 32 using the connector 34 is not necessary for all the operation rod portions 32 extending in each top plate receiving structure 4. This is true not only when the leg and foot units belonging to a group are two units, but also when there are three or more units. One operation rod portion 32 has a structure (third rod portion) directly extended into the top plate receiving structure 4 without using the connector portion 34, and all the remaining operation rod portions 32 use the connector portion 34. It can be a structure. The operation rod portion 32 that extends directly into the top plate receiving structure 4 serves as a reference operation rod portion when synchronizing with another operation rod portion 32. That is, with the machine screws 34c and 34c loosened in all the connectors used, the operation unit 30 is operated to push the third rod portion directly extending into the top plate receiving structure 4 by the gas spring 13. It is brought into contact with the valve 16. In that state, in the remaining operating rod portion 32, the gas spring operating portion 36 at the tip of the second rod portion 33b is adjusted by adjusting the insertion amount and the angle of the first rod portion 33a and the second rod portion 33b with respect to the connector 34. Can be in contact with the push valve 16 of the gas spring 13 (only in contact with the push valve 16 but not pushed in). By screwing the machine screws 34c and 34c in all the connectors 34 in this contact state, the first rod portion 33a and the second rod portion 33b are fixed to the connectors 34, and the operation portion 30 is integrally assembled. Can be. When the user operates the operation unit 30 after the assembled state in which such a gap is absorbed, one operation of the handle unit 31 is absorbed in the middle of all the operation rod units 32 including the third rod unit. It is transmitted to all the gas spring operating portions 36, and the push valve 16 of all the gas springs 13 can be operated in synchronization.

FIG. 5 is a diagram illustrating the inclination of the top plate of the tilt-adjustable table shown in FIGS. 1 to 4. In FIG. 5, the same reference numerals as those used in FIG. 1 are used for the elements and parts equivalent to those shown in FIG. 1. In the state shown in FIG. 5A, the length of the column 5 belonging to the first leg unit group G1 and the length of the column 5 belonging to the second leg unit group G2 are the same, and the top plate 2 is horizontal. It is in a state. Here, if the length of the strut 5 belonging to the second leg unit group G2 is not changed and the length of only the strut 5 belonging to the first leg unit group G1 is changed to be longer, the top plate 2 is shown in the figure. As shown in 5 (b), the side of the strut 5 belonging to the first leg unit group G1 is high, the side of the strut 5 belonging to the second leg unit group G2 is low, and the top plate 2 is shown in the inclined direction S. Tilt. Since the foot body 7 is fixedly attached to the support column 5, when the top plate 2 and the support column 5 are tilted, the foot body portion 7 is also tilted together with the support column 5. On the other hand, the footing portion 8a is variably attached with a protruding height in the direction of the floor surface F (height direction) with respect to the foot body portion 7 by the foot shaft 9a, so that it accompanies the inclination of the top plate 2. Even if the foot body portion 7 is tilted, both the landing portions 8a and 8b can be seated facing the floor surface F, and the load of the table 2 can be transmitted to the floor surface F. Since the footing portion 8a and the foot shaft 9a and the footing portion 8b and the foot shaft 9b are connected by a ball joint 47 (FIG. 3 (c)), it is possible to absorb the deviation of the angle due to the inclination of the top plate 2. can. The overturning moment generated in the entire table 1 due to the inclination is countered by the treading of the footing portions 8a and 8b.

FIG. 6 is a perspective view partially showing another embodiment of the table according to the present invention. FIG. 6A is a perspective view showing a non-tilted state of one support column of the table and its foot portion, and FIG. 6B is a perspective view showing the tilted state of the table. In the case of the leg-foot structure 3a consisting of four leg-foot units U1 to U4 in which the leg-foot structure of the table 1a is arranged corresponding to the corner, all the columns 5 and the foot portion 6 have the same structure as shown. have. In the leg foot structure 3a of the table 1a shown in FIG. 6, the lower end portion 5b of the support column 5 (the lower end portion of the joint cylinder 5c) is tilted with respect to the foot body portion 7 of the foot portion 6 in the tilt direction T (FIG. 1). It has a structure in which it is connected at an arbitrary angle only around the axis L1 parallel to the axis. Therefore, in this embodiment, the inclination of the top plate 2 is only the inclination direction opposite to the direction indicated by S in FIG. 6 (b).

FIG. 7 is an explanatory view showing a connecting structure between the foot portion and the support column of the leg-foot structure shown in FIG. FIG. 7A is an explanatory view showing an example of the connection structure between the support column 5 and the foot portion 6 of the leg foot structure 3a shown in FIG. 6, and FIG. 7B is an explanatory view of the connection structure between the support column 5 and the foot portion 6. It is explanatory drawing which shows another example. In FIGS. 7A and 7B, FIG. 7A is a plan view of the support column 5 and the foot portion 6 of the leg-foot structure 3a as viewed from above, and FIG. 7B is sandwiched between the support column 5 and the foot portion 6. It is a figure which shows three washers side by side. (C) is a side view showing (a) in a partial cross section, (d) is a view showing a sleeve used on the support column 5, and (e) shows a connecting bolt and a washer used in the connecting structure. It is a figure.

Referring to FIGS. 6 and 7, in the leg-foot structure 3a, the block-shaped adapter 50 is fixedly attached to the lower end portion 5b of the support column 5. The adapter 50 is placed in contact with the side surface 7a of the foot body 7 facing the inside of the table, and the screwed knob 51 (connecting bolt) is screwed in the direction of the axis L1 so that the adapter 50 is attached to the foot body 7. It is fixed. A nut 60 to which the male screw of the knob 51 can be screwed is fixedly attached to the foot body 7, and a sleeve 61 is attached to the adapter 50 in line with the nut 60 attached to the foot body 7. There is. A washer set 62 for preventing slack is interposed between the foot body 7 and the adapter 50. The washer set 62 is a three-disc washer, and is composed of an annular washer 63, 63 placed on the foot body 7 side and the adapter 50 side, and a spring washer 64 sandwiched between the two annular washers 63, 63. ing. The spring washer 64 is formed in a C shape and is formed in a corrugated shape in the sandwiching direction. The threaded knob 51 includes a male threaded portion 65 and a knob portion 66. The outer cylinder 11 of the gas spring is placed at a position where the lower end portion 14 of the gas spring abuts on the deformed portion of the joint cylinder 5c protruding into the cylinder by the emboss 68 applied to the joint cylinder 5c so that the gas spring does not descend any further. Positioned. Further, the outer cylinder 11 may be fixed to the joint 5c by bringing the tip of the fixing screw 69 screwed into the joint 5c of the support column 5 from the outside into contact with the lower end 14 of the outer cylinder 11. ..

The strut 5 is connected to the foot body 7 by passing the male thread 65 of the knob 51 through the sleeve 61 and the washer set 62 and further screwing the male thread 65 into the nut 60 of the foot body 7. The male threaded portion 65 can be screwed into the nut 60 and extend into the foot portion main body 7. By operating the knob 51 to loosen the screw, the connection between the foot body 7 and the adapter 50 becomes free. When tightened with the knob 51, the elastic force of the spring washer 64 can prevent the screw from loosening. A washer 67 is also interposed between the knob portion 66 of the knob 51 and the adapter 50 to ensure screw tightening of the screwed knob 51. The mounting angle of the adapter 50 with respect to the foot body 7 can be changed according to the inclination of the top plate 2. Once the mounting angle is determined, the knob 51 can be operated and screwed in to maintain and fix the tilt angle of the support column 5 as shown in FIG. 6 (b). Since the posture of the foot body 7 with respect to the floor surface F can be changed even if the inclination angle of the top plate 2 is changed, all the footing portions 8 provided on the foot body 7 are seated facing the floor surface F. Can be in the same state. The male threaded portion 65 of the knob 51 may be passed through the foot body portion 7, and another nut may be screwed into the protruding end of the male threaded portion 65 to be tightened and fixed.

The connecting structure between the support column 5 and the foot portion 6 shown in FIG. 7B is a structure in which the support column 5 is connected to the foot portion main body 7 by directly penetrating the threaded knob 51 through the joint cylinder body 5c of the support column 5. Is. That is, the nut 70 is fixedly attached to the foot body 7, and the sleeve 71 is attached to the lower portion of the joint cylinder 5c in a penetrating state. A washer set 72 for preventing slack is interposed between the nut 70 and the lower portion of the joint cylinder 5c. The washer set 72 is a three-disc set washer, and is composed of an annular washer 73, 73 and a C-shaped spring washer 74 sandwiched between them, similarly to the washer set 62 shown in FIG. 7 (a). It is made up. The threaded knob 51 as a connecting bolt has the same structure as the threaded knob 51 shown in FIG. 7A, but the reference numerals are male threaded portion 75 and knob portion 76. Further, a washer 77 similar to the washer 67 is interposed between the knob portion 76 of the screwed knob 51 and the support column 5.

The male threaded portion 65 of the knob 51 is passed through the sleeve 71 and the washer set 72 which are passed through the joint cylinder body 5c, and the male threaded portion 65 is screwed into the nut 70 fixed to the foot body portion 7, so that the support column 5 becomes the foot body. It is connected to the part 7. The male threaded portion 65 can be screwed into the nut 60 and extend into the foot portion main body 7. By operating the knob 51 to loosen the screw, the connection between the foot body 7 and the adapter 50 becomes free. When tightened with the knob 51, the elastic force of the spring washer 72 can prevent the screw from loosening. A washer 77 is also interposed between the knob portion 76 of the knob 51 and the support column 5, ensuring that the screwed knob 51 is screwed. Since the mounting angle of the support column 5 with respect to the foot body portion 7 can be changed according to the inclination of the top plate 2 as in the case of the connection structure shown in FIG. 7A, the description thereof will be omitted again. Further, the embossed 78 and the fixing screw 79 formed on the joint cylinder 5c for fixing the outer cylinder 11 of the gas spring are also the embossed 68 and the fixing screw described in the case of the connecting structure shown in FIG. 7A. Since it is the same as 69, the description thereof will be omitted again.

FIG. 8 is a diagram showing still another embodiment of the table according to the present invention. FIG. 8A is a perspective view showing the whole of still another embodiment of the table according to the present invention, and FIG. 8B is an enlarged perspective view showing a part thereof. In the table 1b shown in FIG. 8, the foot portion 6 attached to the support column 5 belonging to the first leg / foot unit group G1 and the foot portion 6 attached to the support column 5 belonging to the second leg / foot unit group G2 ( It is adjacent to the foot portion 6 belonging to the first leg foot unit group G1) by a connecting member 55. In this example, the connecting member 55 includes an elongated plate member 56 having elongated holes 57, 57 extending in the longitudinal direction at both ends thereof. The foot portions 6 and 6 are connected by screwing the elongated plate member 56 into the foot body portions 7 and 7 of the foot portions 6 and 6 with the wing bolts 58 and 58 passed through the elongated holes 57 and 57. In the state where the wing bolts 58 and 58 are loosened, the connecting member 55 causes the elongated holes 57 and 57 to change the distance and rotation of both foot portions 6 and 6 that approach and separate from each other according to the inclination of the top plate 2. It can be absorbed within the allowable range. The first operation unit 301, the second operation unit 302, and the footing portions 8a and 8b are the same as those shown in FIG.

When the tilt angle of the top plate 2 is determined, the wing bolts 58, 58 passed through the elongated holes 57, 57 are inserted into the foot body portions 7, 7 of the two-legged foot unit group G1 and G2 with the elongated plate member 56 sandwiched between them. By screwing into, the feet 6 and 6 are connected by the connecting member 56. In this connected state, the connecting member 56 also suppresses lateral displacement and twisting displacement of both foot portions 6 and 6, so that it is possible to increase the rigidity of the leg-foot structure 3b and contribute to stability. The elongated plate member 56 is a single elongated plate member 56, but it may also be a connecting member composed of two members fixed to both feet 6 and 6 and connected by bolts through elongated holes overlapping each other. It is possible.

In each of the above embodiments, both the first leg unit group G1 and the second leg unit group G2 include two columns 5 and 5, but each group includes one or more columns 5. You just have to go. However, one group preferably has two struts. Further, depending on the size and shape of the top plate 2, such as in the case of a large table, either or both of the support columns may include three columns. FIG. 9 is a perspective view showing still another embodiment of the table according to the present invention. In FIG. 9, the same reference numerals as those used in FIG. 2 are used for the elements and parts equivalent to those shown in FIG. 2. The table 1c shown in FIG. 9 is a perspective view showing the table from the back surface side, and the first leg foot unit group G1 has three leg foot units U1, U2, U5 arranged in a row along one side edge portion a. The second leg unit group G2 includes three leg unit U3, U4, U6 arranged in a row along the other side edge portion a. The leg foot unit U5 (U6) is arranged at an intermediate position between the leg foot units U1 and U2 (leg foot units U3 and U4). In order to operate the corresponding leg / foot units U5 and U6, the operation units 301 and 302 branch from the central portion of the first rod portions 33a and 33a of the rod portions 33 and 33 at right angles toward the center of the table 1c, and the legs It has second rod portions 33c and 33c extending inward of the top plate receiving structures 4 and 4 of the foot units U5 and U6. It is the same as the other second rod portions 33b (see also FIG. 4) that each second rod portion 33c includes a lever fulcrum portion 35 and a gas spring operating portion 36. By operating the operation unit 301, the leg foot units U1, U2, and U5 belonging to the first leg foot unit group G1 operate all at once (the length of each support column 5 is changed), and by operating the operation unit 302, the second leg unit 302 is operated. The leg-foot units U3, U4, and U6 belonging to the leg-foot unit group G2 operate all at once (the length of each support column 5 is changed). This embodiment is particularly suitable for a large table that is long sideways and when the load placed on the table is large.

As the structure of the operation unit 30, a lever structure is adopted in which the operation tip portion 36 moves up and down by the action of the lever by the lever fulcrum portion 35 at the intermediate position, and the operation tip portion 36 pushes down the push valve 16 to operate. Although an example has been described, as another structure of the operation unit 30, a structure in which the operation tip portion provided with the tapered surface moves back and forth inside the top plate receiving structure by operation can be adopted. In this case, the push valve 16 can be pushed down and operated by the wedge action of the tapered surface of the operation tip portion that moves forward and backward.

FIG. 10 is a perspective view showing still another embodiment of the table according to the present invention. In the table 1d shown in FIG. 10, the positions where the four columns 5 are arranged correspond to the vertices of the rectangle so as to correspond to the four corners of the top plate 2, for example, and two sets of the first leg unit group. And a second leg unit group, and two sets of a first operation unit and a second operation unit are provided. That is, the first leg unit group G1 (i) and the second leg unit group G2 (i), which are one set of the leg unit group, are the first leg unit group G1 in the example shown in FIG. Similar to the second leg unit group G2, they are lined up along the long side edges a and a of the top plate 2, but from the same four leg unit U1 to U4, they are the other set of the leg unit group. The first leg unit group G1 (ii) and the second leg unit group G2 (ii) are assembled side by side along the short side edges b and b of the top plate 2. The example in which the four leg units U1 to U4 occupy the positions corresponding to each of the four vertices of the rectangle is shown, but the top plate 2 is fitted with each of the four vertices by using a parallelogram. Even if they are placed in the same position, the inclination directions are not perpendicular to each other, but the same effect can be obtained.

Regarding the operation unit, one set of the first operation unit 301 (i) and the second operation unit 302 (i) is the same as the first operation unit and the second operation unit 301, 302 in the example shown in FIG. The first operation unit 301 (ii) and the second operation unit 302 (ii), which are the other set, are arranged along the long side edges a and a of the top plate 2, but the short side edges b of the top plate 2 , B are arranged. The structure of the first operation unit 301 (ii) and the second operation unit 302 (ii) of the other set is the length of one set of the first operation unit 301 (i) and the second operation unit 302 (i). Since the structure is the same except that is different, the description thereof will be omitted again. By operating the first operation unit 301 (ii) and the second operation unit 302 (ii) of the other set, the first operation unit 301 (i) and the second operation unit 302 (i) of one set are operated. The top plate 2 can be tilted in the tilting direction S (ii) orthogonal to the tilting direction S (i). The top plate receiving structure 4a used in this embodiment will be described later with reference to FIG.

FIG. 11 is a perspective view showing the operation unit and the top plate receiving structure in the embodiment shown in FIG. In the top plate receiving structure 4a shown in FIG. 11, vertically long elongated holes 25 and 25 are formed on the side wall portions 22 and 22 on both sides of the corner, respectively. The second rod portion 33b of the first operation unit 301 (i) of one set and the second rod portion 33b of the second operation unit 302 (ii) of the other set pass through the elongated holes 25 and 25 to receive the top plate. It has entered the recess 21 in the center of the structure 4a. The lower edge portions of the elongated holes 25 and 25 are lever fulcrum portions 35 and 35, and operate the first operation unit 301 (i) of one set and the second operation unit 302 (ii) of the other set, respectively. At this time, the second rod portions 33b, 33b operate the gas spring operating portions 36, 36 formed at the tips of the second rod portions 33b, 33b in the vertical direction by the lever action of the lever fulcrum portions 35, 35. The gas spring operating portions 36, 36 of the second rod portions 33b, 33b are arranged in the recess 21 so as to be vertically overlapped on the push valve 16.

When only the first operation unit 301 (i) is operated, the gas spring operation portion 36 formed at the tip of the second rod portion 33b of the first operation unit 301 (i) directly pushes the push valve 16. Then, activate the gas spring. When the second operation unit 302 (ii) is operated, the gas spring operation portion 36 formed at the tip of the second rod portion 33b of the second operation unit 302 (ii) is the first operation unit 301 (i). The gas spring operating portion 36 is pushed, whereby the gas spring operating portion 36 of the first operating portion 301 (i) pushes the push valve 16 to operate the gas spring. Since the other structures of the top plate receiving structure 4a are the same as the structure of the top plate receiving structure 4 shown in FIG. 4, the same reference numerals as those used for the top plate receiving structure 4 will be used to explain again. Is omitted.

FIG. 12 is a diagram illustrating the rotational arrangement of the foot portion in the leg-foot structure according to the present invention. Since the stanchion 5 having a leg-foot structure has a circular cross section, it is easy to attach the stanchion 5 to the foot body 7 of the foot portion 6 at different angles around the axis of the stanchion 5. The first strut group to be operated by forming a protrusion and a recess that fits the protrusion every 90 degrees around the axis of the strut 5, or by fixing the bottom of the strut 5 with a screw every 90 degrees. The direction in which the foot body portion 7 of the foot portion 6 extends can be changed according to the combination of the pair of the second support columns and the tilting direction of the top plate 2. It is assumed that FIG. 12A is the basic form, and one set of the first support column group and the second support column group are arranged along the long side edges a and a of the top plate 2. It is assumed that the inclination (downward) direction S of the top plate 2 generated by the operation at this time is a direction toward the lower side of the drawing from the positions of the footwear portions 8a and 8b.

FIG. 12 (b) shows a state in which the foot body 7 is rotated 180 degrees from the arrangement of FIG. 12 (a). The first support column group and the second support column group to be operated are the same as the basic shape, but the direction in which the top plate 2 is tilted is opposite, and the tilt (downward) direction S is the direction toward the upper side of the drawing. FIG. 12 (c) shows a state in which the foot body 7 is rotated 90 degrees clockwise from the arrangement of FIG. 12 (a). The inclination (downward) direction S at this time is a direction toward the left side of the drawing from the positions of the footwear portions 8a and 8b. The set of the first strut group and the second strut group to be operated is a set different from the set in the case of the basic form (the other set along the short edge b, b). FIG. 12 (d) shows a state in which the foot body 7 is rotated clockwise by 270 degrees from the arrangement of FIG. 12 (a). The inclination (downward) direction S at this time is a direction toward the right side of the drawing from the positions of the footwear portions 8a and 8b. The set of the first strut group and the second strut group is the same as the set in the case of FIG. 12 (c) (the other set along the short edge b, b), but the operation direction is opposite and the inclination direction is opposite. Be on the side. In either case, the foot body 7 is within the projection range of the top plate 2 on the floor surface F and does not protrude outside the projection of the top plate 2, so that it interferes with the feet of workers moving around. Never become.

FIG. 13 is a schematic view illustrating a case where the present invention is applied to a horizontally long table, and is a view seen from the foot body portion toward the top plate. The table 1e shown in FIG. 13A is, for example, a table having a very horizontally long top plate 2 (long side edges a and a are sufficiently longer than short side edges b and b). Since the leg-foot structure 3 including the stanchions and the feet is the same as the structure shown in FIGS. 3 and 12, the detailed description thereof will be omitted here. The table 1e has a horizontal length in which both operation units 30 and 30 cannot be operated by one person, but the operation units 30 and 30 arranged along the short side edges b and b are operated by two people. By sharing and operating, the lengths of the columns of the first leg unit group G1 and the second leg unit group G2 along the short side edges b and b can be changed. If the lengths of the changed columns of the two-legged unit groups G1 and G2 are the same, the height of the top plate 2 is adjusted, and if they are different, the height is changed and the inclination direction (lateral direction) S Is tilted to. The operation units 30 and 30 may be arranged along the long side edges a and a as shown in FIG. 13 (b) as the table 1f. The table 1f is the same as the table 1e except for the arrangement of the operation units 30 and 30 and the unit groups G1 and G2. Therefore, the same structure is designated by the same reference numerals and the description thereof will be omitted again. In the case of the table 1f, both operation units 30 and 30 can be operated by one person, and at this time, the inclination direction S is the vertical direction.

FIG. 14 is a diagram showing still another embodiment of the table according to the present invention. As shown in FIG. 14A as the table 1g, the form of the top plate 2a can be a round top plate. The leg-foot structure, the first and second strut groups, and the leg-foot unit are equivalent to the leg-foot structure 3, the first and second strut groups G1 and G2, and the leg-foot units U1 to U4 shown in FIG. Things can be used. Further, as shown in FIG. 14B as the table 1h, the form of the top plate 2b may be an L-shaped top plate. In this case, the first and second strut groups G1 and G2 of the leg-foot structure can be arranged so as to diagonally cross the L-shape. The lengths of the first and second strut groups G1 and G2 in the direction along the table surface (the length of the operation unit 30) are different, but the leg foot units U1 to U4 may have the same structure. can. Instead of the L-shaped table, a semicircular table, a quarter-circular table, or a fan-shaped table can use the same leg-foot structure.

The tiltable table according to the present invention has been described above with some examples, but it is optional to make various modifications. For example, the seated body 8c of the footing portion 8 may be, for example, a caster, particularly a caster with a lock function that locks the rotation in a stopped state, in order to make the table 1 movable on the floor surface F. Although the top plate has been described as a flat plate material, it is clear that it can take various forms depending on the application for raising and lowering. For example, when this table is applied to a bed or sofa, it is clear that the top plate can take the form of a table that supports the mat or cushion. Further, the table according to the present invention has a table for placing objects such as a kotatsu, a trolley, a line table, a store table, a display table, a study desk, etc., or working on a horizontal surface or a surface close to a horizontal surface, and moves up and down. It can be applied to all tables that can improve the functionality of the table.

1,1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h Table 2,2a, 2b Top plate 3,3a, 3b Leg foot structure 4,4a Top plate receiving structure 5 Strut 5a Upper end 5b Lower end 6 feet Part 7 Foot body 7a Side 8 (8a, 8b) Footing part 8c Seating body 9 Foot shaft 9a Long foot shaft 9b Short foot shaft 10, 10a Foot connecting part 11 Outer cylinder 12 Inner cylinder 13 Gas spring 14 Outer cylinder Lower end of body 11 15 Upper end of inner cylinder 12 16 Push valve 17, 17a Lock structure 21 Central recess 22 Side wall 23 Bottom wall 24 Fixture 25 Long hole 26 Flange 30 (30a, 30b) Operation part 31 Handle Units 301, 301 (i), 301 (ii) First operation unit 302, 302 (i), 302 (ii) Second operation unit 32 Operation rod unit 33 Rod unit 33a First rod unit 33b Second rod unit 34 connection Tools 34a, 34a Holes 34b, 34b Screw holes 35 Foot fulcrum parts 36 Gas spring operation parts 40 Thread shafts 41, 42 Nuts 43, 44 Washers 45 Thread shafts 46 Thread holes 47 Ball joints 48 Ball joints 49 Coupling members 50 Adapters 51 Knobs 55 Connecting member 56 Slender plate member 57 Long hole 58 Wing bolt 60, 70 Nut 61, 71 Sleeve 62,72 Washer set 63,73 Ring washer 64,74 Spring washer 65,75 Male thread 66,76 Knob 67,77 Washer 68 , 78 Emboss 69,79 Fixing screw a, a Long side edge b, b Short side edge S, S (i), S (ii) Tilt direction T Tilt direction F Floor surface L Horizontal center line L1 Axis line Ga, Gb Gap G1 , G1 (i), G1 (ii) 1st foot unit group G2, G2 (i), G2 (ii) 2nd foot unit group 6G1 1st foot group 6G2 2nd foot group U1, U2, U3 , U4, U5, U6 Leg foot unit P1 1st strut placement surface P2 2nd strut placement surface

Claims (10)

It is equipped with a top plate, multiple leg and foot units, and multiple operation units.
Each of the plurality of leg foot units has an upper end portion and a lower end portion, the length in the direction connecting the upper end portion and the lower end portion can be changed, and the upper end portion is connected to the top plate. It has a strut and a foot that is connected to the lower end of the strut and sits on the floor.
The length of the support column of the plurality of leg / foot units is a table that is changed by the operation of any of the plurality of operation units.
The plurality of leg / foot units include a first leg / foot unit group including one or more of the leg / foot units and arranged on one side of the top plate, and one or more of the leg / foot units. It belongs to any one group of the second leg unit arranged on the other side of the top plate.
The operation unit can be operated independently of the first operation unit for changing the length of the column of the leg unit belonging to the first leg unit group and the first operation unit. A table comprising a second operation unit for changing the length of the support of the leg / foot unit belonging to the second leg / foot unit group. In each of the leg-foot units, the foot portion includes a foot body portion that is attached to the support column and extends in a longitudinal direction connecting between the one side and the other side of the top plate. The table according to claim 1, further comprising a plurality of footing portions that are spaced apart from the foot body portion in the longitudinal direction and that are seated on the floor. The foot body portion of the foot portion is fixedly attached to the support column, and the foot body portion thereof is fixedly attached to the support column.
The foot portion of the foot portion is attached to the foot body portion so that the height of protrusion toward the floor can be changed.
The table according to claim 2, wherein the protruding height of the footing portion with respect to the foot body portion is changed to a height corresponding to the inclination angle of the top plate. The foot body portion is attached so that the attachment angle can be changed with respect to the lower end portion of the support column, and the attachment angle of the foot body portion to the support column is changed to an angle corresponding to the inclination angle of the top plate. The table according to claim 2. Two or more of the leg and foot units belong to the first leg and foot unit group, and two or more of the leg and foot units belong to the second leg and foot unit group.
The columns of the leg unit belonging to the first leg unit group are arranged in a common first column arrangement surface, and the columns of the leg unit belonging to the second leg unit group are common. It is arranged in the second column arrangement surface,
The table according to any one of claims 1 to 4, wherein the first support column arrangement surface and the second support column arrangement surface are parallel to each other. The foot portion attached to the strut of the leg foot unit belonging to the first leg unit group and the foot portion attached to the strut of the leg foot unit belonging to the first leg foot unit group. The table according to any one of claims 1 to 5, wherein the table is connected by a connecting member in a state of absorbing a relative position change caused by the inclination of the top plate of both feet. The leg-foot unit includes at least four leg-foot units arranged corresponding to the four vertices of the parallelogram.
The one side and the other side of the top plate are the side of one side and the side of the other side for each of the two pairs of opposite sides of the parallelogram.
On each of the two sets of the top plate, the first leg unit group and the second leg unit group are defined for the leg unit, and the first operation unit and the operation unit are defined for the operation unit. The table according to any one of claims 1 to 5, wherein a second operation unit is provided. Each of the leg and foot units includes a top plate receiving structure attached to the top plate and the upper end portion of the support column in order to connect the upper end portion of the support column to the top plate.
In the top plate receiving structure corresponding to the four leg / foot units, the operating portion of any one of the one set and the operating portion of any of the other set extend, respectively.
The table according to claim 7, wherein the length of the support column to which the upper end portion is attached to the top plate receiving structure can be changed by operating any of the operation units. Claim 1 The table according to any one of 7. By changing the length of the strut of the leg unit belonging to the first leg unit group and the length of the strut of the leg unit belonging to the second leg unit group to the same length, the heavens The table according to any one of claims 1 to 8, comprising changing the height of the board.

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