JP6748448B2 - Lifting table - Google Patents

Description

The present invention relates to an elevating table capable of adjusting the height of a top plate, and more particularly to an elevating table suitable for adjusting the height of a plurality of annularly arranged top plates.

For example, in welfare facilities, nursing facilities, and the like, there are users who use wheelchairs and users of various physiques, so it is necessary to adjust the height of the table used for meals and work to the users. Conventionally, in order to meet such a demand, tables having different heights have been provided for each user. However, preparing a plurality of types of tables having different heights according to users requires a large cost and a large storage space.

Therefore, various lifting tables capable of adjusting the height of the top plate have been proposed. For example, in the lifting table disclosed in Patent Document 1, the height of the lifting table is increased by incorporating a lifting mechanism in the legs that support the top plate and rotating an operation handle arranged on the side of the lifting table. Is configured to be adjustable. Further, the elevating table disclosed in Patent Document 2 is configured such that a plurality of rectangular top plates are confronted with and adjacent to each other and can be moved up and down.

JP, 2001-128742, A Utility model registration No. 3167145

However, the lifting table disclosed in Patent Document 1 is configured such that one top plate can be lifted and is intended for only one user. In a facility with a large number of users, a large number of lifting tables are required, which results in a large cost. Also, the work of preparing and putting away many lifting tables is difficult.

Since the lifting table disclosed in Patent Document 2 is formed as an integrated type by attaching a plurality of top plates to one frame that is laid across the legs at both ends, the lifting table preparation work and tidying work It is possible to efficiently perform the above, and reduce the number of parts to provide an inexpensive lifting table. However, because of the structure in which a plurality of top plates are supported by one frame, the frame that secures the robustness of the frame tends to be heavy, and the design of the entire table is also restricted. Further, there is a problem that the installation area of the entire table tends to be large when trying to secure a sufficient depth around the undercarriage for wheelchair users.

The present invention has been made to solve the above problems, and the height can be adjusted according to the user, and the lifting table preparation work and tidying work can be efficiently performed. An inexpensive lifting table that is lightweight with or without a support frame, thus reducing the overall weight, facilitating preparation and tidying work, and reducing the installation area to a compact size. The purpose is to provide.

In order to achieve the above-mentioned object, the lifting table according to the first aspect of the present invention includes at least three individual top plates arranged in an annular shape, and a support lifting drive means for supporting and lifting the individual top plates. In the lifting table having the above, each of the individual top plates is a straight line connecting a pair of side portions along a pair of dividing lines radially extending from a common center point and an outer end portion of the pair of side portions. Shape, a bent shape, and a curved shape, or a shape having an outer edge portion formed of a combination of shapes, and the support lifting/lowering drive means includes boundary portions between the plurality of individual top plates. Are respectively arranged at the outer end portions of the above, and at the outer end portions, two adjacent individual top plates are integrally connected so as not to be separated, and the individual top plates are separately provided. The support lifting/lowering drive means is formed so as to be supported and separately lifted/lowered. Is formed by separately supporting the two adjacent top plates adjacent to each other by the pair of elevating and lowering drive mechanisms, and a plurality of the connection mechanisms are provided to maintain the mutual relationship positions. It is characterized in that they are connected to each other by a support frame having a shape along each of the dividing lines radially extending from the common center point of the plates .

Also, in the lifting table according to the second aspect of the present invention, in the first aspect, the support frame includes a connection portion with a support hub provided at the center point portion, and a connection portion with each of the connection mechanisms. It is characterized in that it is formed so as to be freely folded .

Further, the lifting table according to the third aspect of the present invention is the lifting table according to the first or second aspect, wherein the pair of lifting drive mechanisms of each of the supporting lifting drive means separately supports the adjacent two individual top plates. It is characterized by being mounted in collateral leg portion as the coupling mechanism.

Further, the lifting table according to the fourth aspect of the present invention is the lifting table according to the second or third aspect, wherein the individual top plates are supported at the outer ends of the pair of side portions of each individual top plate. Each of the elevating and lowering drive mechanisms is provided with an interlocking operation mechanism that interlocks with the elevating and lowering of the individual top plates supported by both.

ADVANTAGE OF THE INVENTION According to this invention, it is an inexpensive raising/lowering table which can adjust height according to a user and can efficiently perform preparatory work and tidying-up work of a raising/lowering table, and has no support frame. Alternatively, it is possible to provide a lifting table that is light in weight, and therefore can reduce the overall weight, facilitates preparation and tidying work, and can reduce the installation area to be compact.

1 is an exploded perspective view showing a first embodiment of a lifting table of the present invention in a skeleton manner. Plan view of FIG. Bottom view of Figure 1 (A)-(d) is a bottom view similar to FIG. 3 showing the relationship between the individual top plate and the support frame of the present invention. A perspective view showing a first embodiment of a lifting table according to the present invention. (A) is a perspective view of FIG. 5 seen from the bottom side, (b) and (c) are perspective views showing another example of the slide pipe joined to the individual top plates shown in parts (b) and (c) of FIG. Figure Plan view of FIG. Bottom view of FIG. Front view of FIG. Sectional drawing which followed the AA line of FIG. The perspective view which shows the 1st Example of the raising/lowering table of this invention in which the raising length of the individual top plate was changed. Block diagram showing an example of an active interlocking mechanism Block diagram showing an example of a passive interlocking mechanism A perspective view showing a modification of a supporting frame formed in an arch shape. A perspective view showing a developed state of a leg portion and a support frame used in a second embodiment of the lifting table of the present invention. FIG. 15 is a perspective view showing a folded state of the legs and the support frame shown in FIG. The perspective view which shows the 2nd Example of the raising/lowering table of this invention. Bottom view of FIG. 3 is a perspective view showing a third embodiment of the lifting table of the present invention. Bottom view of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4, which show the features of the present invention in a skeleton manner.

The elevating table 1 of the first embodiment has at least three individual top plates 2 arranged in an annular shape, and a support elevating drive means 3 that supports the individual top plates 2 to drive them up and down. The first embodiment has four individual top plates 2a, 2b, 2c, 2d and four support lifting/lowering drive means 3a, 3b, 3c, 3d.

Explaining further, each individual top plate 2 has a pair of side portions 4-4 along a pair of dividing lines D-D radially extending from the common center point O, and the outside of the pair of side portions 4-4. An outer edge portion formed of any one of a straight line (see the solid line in FIG. 2), a bent shape (see the broken line in FIG. 2) and a curved shape (see the chain line in FIG. 2) connecting the end portions or a combination thereof. 5 and 5. The inner ends of the pair of side portions 4-4 have a top shape with the center point O as the apex, or a straight or curved inner line connecting the inner ends as shown in FIG. It is formed by the side edge portion 6. Since the first embodiment has four individual top plates 2a, 2b, 2c, 2d, it has four dividing lines Da, Db, Dc, Dd extending radially from the center point O. In the individual top plate 2a along the adjacent four pairs of dividing lines Da-Db, Db-Dc, Dc-Dd, and Dd-Da, in the pair of side portions 4aa-4ab and the individual top plate 2b. Has a pair of side portions 4bb-4bc, a pair of side portions 4cc-4cd in the individual top plate 2c, and a pair of side portions 4dd-4da in the individual top plate 2d, and further has a linear shape. It has outer edge portions 5a, 5b, 5c, 5d and linear inner edge portions 6a, 6b, 6c, 6d.

The support lifting/lowering drive means 3a, 3b, 3c, 3d are arranged at the outer ends of the respective boundary portions between the plurality of individual top plates 2, 2 and are adjacent to each other at the outer ends. The two individual top plates 2 are integrally connected so as not to be separated from each other, and the individual top plates 2 are separately supported and are configured to be separately lifted and lowered.

In the present invention, since the dividing line D radially extending from the common center point O is used, the shape of each individual top plate 2 is a shape that divides the entire circumference, in other words, from the center to the outside. It can be formed in a shape that gradually expands or a shape that gradually converges from the outside toward the center. Furthermore, by selecting or combining convex or concave curves in which the outer end portion 5 is linear, bent or radially outward, a top plate surface 2all in which all the individual top plates 2 are assembled is formed. The outer shape as a whole can be formed into a polygonal shape, a circular shape, an elliptical shape, or a shape in which the outer edge portion is recessed (see FIG. 2 and FIGS. 4A to 4D ). Furthermore, by not providing the inner edge portion 6 or by selecting or combining a curved curve of the inner edge portion 6 that is linear or radially outward, a combination of all the individual top plates. The inner shape of the top plate surface 2all in which the two are assembled can be closed as a whole, or the void portion 14 can be formed in the central portion. Then, the shape outside the top plate surface 2all may be selected according to the design concept by selecting the number of dividing lines D and the shape of the outer edge portion 5. Here, the polygon of the top plate surface 2all is not particularly limited, but a triangle, a quadrangle, a pentagon, a hexagon, and the like are preferable, and a quadrangle is most preferable. It should be noted that the polygon may be substantially polygonal, and for example, it may be a quadrangle or may have notches or the like at four corners (vertices) as shown in FIG. Further, the polygon is preferably a regular polygon, but may be a polygon having different side lengths (rectangular in a quadrangle) or a polygon having different vertex angles (a trapezoid or a rhombus in quadrangle). Here, the individual top plate 2 functions as a table for each user. For example, in the case of a square or rectangular top plate surface 2all as a whole, the individual top plate 2 is divided along a diagonal line to form a triangle. In the case of a circular top plate surface 2all as a whole, the individual top plate 2 has an arc shape. As a material of the individual top plate 2, any material such as wood, resin, metal, ceramic, glass, or a laminated body/mixed body thereof can be selected according to the application.

Next, each support elevating/lowering drive means 3 will be described. The respective support elevating/lowering drive means 3 integrally include a pair of elevating/lowering drive mechanisms 7 and 8 that operate independently and a pair of the elevating and lowering drive mechanisms 7 and 8 integrally. It has the connection mechanism 9 which connects. The pair of elevating and lowering drive mechanisms 7 and 8 extend and contract in the vertical direction, respectively, and the upper ends thereof are attached to the lower surfaces of the adjacent two individual top plates 2 and 2 so as to be separately supported. The pair of lifting drive mechanisms 7 and 8 are mounted side by side on the leg portion 10 as the coupling mechanism 9. That is, the leg portion 10 has a function as a leg and a function as a connecting mechanism.

Each of the elevating and lowering drive mechanisms 7 and 8 may be any as long as it can expand and contract in the vertical direction, and a material having a known expansion and contraction function can be used. For example, it is possible to select one that expands and contracts manually or automatically, expands and contracts by a mechanical structure, and expands and contracts using various actuators. The leg portions 10 as the connecting mechanism 9 are adjacently supported separately by the respective elevating and lowering drive mechanisms 7 and 8 by connecting the pair of elevating and lowering drive mechanisms 7 and 8 arranged in parallel so as not to separate from each other. The adjacent relationship between the two individual top plates 2 and 2 is maintained. As a result, the annular arrangement of all the individual top plates 2 is maintained. Further, preferably, a caster and a lock mechanism for fixing the lift table 1 by blocking the rotation of the caster may be provided in the lower portion of the leg portion 10.

Then, the two lifting drive mechanisms 7 and 8 supporting the individual top plates 2 at the outer end portions of the pair of side portions 4 and 4 of each individual top plate 2 are supported by both of them. It is provided with an interlocking operation mechanism 11 (described later) that interlocks with each other to raise and lower the individual top plate 2 while maintaining the horizontal state.

Further, in order to maintain the interrelated positions of the legs 10 as the plurality of connecting mechanisms 9, a support frame 12 having a shape along a dividing line D radially extending from a common center point O of each individual top plate 2 (FIG. 4). It is preferable to connect them to each other by means of a reference). Further, as shown in FIG. 3, when the two dividing lines Da and Dc are one straight line passing through the common center point O, the pair of connecting mechanisms 9 (10 located on the dividing line Da-Dc). ) May be connected by a single linear support frame 12a that connects them to each other. In FIG. 3, the other two division lines Db and Dd may be connected by another support frame 12b. The two support frames 12a and 12b are installed so as to intersect at the center point O.

Further, as shown in FIG. 4B, in the support frame 12, the support hub 12c is arranged at the center point O, four support branches 12d are radially extended from the support hub 12c, and The branch 12d may be hinged to the support hub 12c and each leg 10 so as to be foldable (described in detail in the second embodiment).

Next, a first embodiment of the present invention will be described with reference to FIG. 5 to FIG. 14, which specifically show the features of the present invention.

The elevating table 21 of the first embodiment is an example provided with four individual top plates 22 divided by four dividing lines D.

The first embodiment has four individual top plates 22a, 22b, 22c, 22d and four support lifting/lowering drive means 23a, 23b, 23c, 23d.

The four individual top plates 22a, 22b, 22c, 22d are divided along the adjacent four pairs of dividing lines Da-Db, Db-Dc, Dc-Dd, Dd-Da, and the individual top plates 22a. In the pair of side portions 24aa-24ab, in the individual top plate 22b, the pair of side portions 24bb-24bc, in the individual top plate 22c, the pair of side portions 24cc-24cd, and in the individual top plate 22d, the pair of sides. It has side parts 24dd-24da, and further has linear outer end parts 25a, 25b, 25c, 25d and linear inner end parts 26a, 26b, 26c, 26d. There is. A top plate surface 22all in which all the individual top plates 22 are gathered has a square outer shape, and has a void portion 34 in the center of the inside.

As the elevating and lowering drive mechanisms 27 and 28 forming the respective bearing elevating and lowering drive means 23a, 23b, 23c and 23d, a plurality of slide pipes (hereinafter, reference numerals 27 and 28, respectively) that vertically support the respective individual top plates 22 are provided. Is displayed). The connecting mechanism 29 is a leg portion 30 that includes a fixing mechanism that receives the slide pipes 27 and 28 so as to be able to move up and down and fixes the lifted position.

The slide pipes 27 and 28 are columnar elongated members having a generally cylindrical shape or a U-shape, and include solid ones, but hollow cylindrical members are preferable in terms of weight reduction and structural strength. The upper ends of the slide pipes 27 and 28 reinforced by ribs 27a and 28a are preferably fixed to the lower surface of the individual top plate 22. The slide pipes 27 and 28 extend vertically downward and are mounted in the leg portion 30 so as to be vertically movable. Specifically, the slide pipes 27 and 28 are inserted into columns that form the legs 30.

The upper portions of the slide pipes 27 and 28 that are not inserted in the columns are narrowed in the columns of the legs 30 without changing the intervals between the fixed individual top plates 22 by expanding the upper portions of the slide pipes 27 and 28 into Y shapes, for example. You can Therefore, the leg portion 30 becomes thin, and it is easy to put in and take out a wheelchair and the like, and it is also lightweight, which is preferable in this respect.

The leg portion 30 includes a guide member that receives the slide pipes 27 and 28 so that the slide pipes 27 and 28 can be moved up and down, and a fixing mechanism (both not shown) that fixes the vertically moving position.

The guide member is not particularly limited, but is, for example, a tubular member into which the slide pipes 27 and 28 can be inserted, or one or more pinions that engage with the racks provided on the outer surfaces of the slide pipes 27 and 28. The (small gear) may be rotatably provided in the leg portion 30, or conversely, one or more pinions may be provided on the outer surfaces of the slide pipes 27 and 28, and a rack engaging with the pinion may be provided in the leg portion 30. It may be a guide member.

Further, although the fixing member is not particularly limited, for example, there is a system in which the outer surfaces of the slide pipes 27 and 28 are pressed against each other and locked by friction. For this purpose, the cam lever 37 may be fixed to the leg portion 10, the grooves for receiving the cam lever 37 may be provided on the outer surfaces of the slide pipes 27 and 28, and the cam lever 37 may be fixed by operation. Alternatively, a part of the tubular guide member may be formed by a member whose inner circumference is deformable, and the tubular guide member may be fixed by increasing a friction surface or a friction force between the tubular guide member and the slide pipes 27 and 28. .. Alternatively, holes may be formed in the slide pipes 27 and 28 at regular intervals, and pins may be inserted and fixed there. In the case of the rack-pinion system described above, a fixing member may be provided to prevent the movement (rotation of the pinion or translation of the rack). The legs 30 may be provided for each of the slide pipes 27, 28, but two slide pipes 27, 28 are provided close to the individual top plates 22 adjacent to each other at the outer ends of the side portions 24. Therefore, it is preferable to store them collectively. As a result, the strength of the leg portion 30 itself is increased, and the cost and weight of parts are reduced.

In addition, it is preferable that each leg 30 includes a biasing mechanism that assists the up-and-down movement of the slide pipes 27 and 28 by the biasing force. The biasing mechanism is mechanical or electrical. Examples of the mechanical urging mechanism include a coil spring or a leaf spring made of metal or the like, a gas spring, or the like. Examples of electrical equipment include those using a motor and electromagnetic induction.

For example, the gas spring may be fixed to the lower surface of the individual top plate 22, and the lower end portion thereof may be slidably inserted into the leg portion 30 or fixed. The gas spring is composed of a cylinder tube and a piston rod, and compressed gas is enclosed in the cylinder tube, for example. With this type of gas spring, the piston rod can be pushed out of the cylinder tube, stopped halfway, or further extended to the longest state and fixed by operating the button that instructs the piston rod to be fixed or released. Can be contracted up to. This makes it possible to push up the individual top plate 22 with a smaller force and prevent the individual top plate 22 from falling onto the leg portion 30 when it is not fixed. It is preferable to provide a gas spring in the slide pipes 27 and 28. A caster 35 and a lock mechanism 36 for fixing the lifting table 21 by blocking the rotation of the caster 35 may be provided below the leg portion 30. Further, the leg portion 30 may be provided with a cam lever 37 for stopping and releasing the vertical movement of the slide pipes 27, 28.

In the present invention, in order to vertically move while supporting each individual top plate 22 horizontally, two slide pipes 27 that support the individual top plate 22 at the outer ends of the side portions of each individual top plate 22. , 28 is preferably provided with an interlocking operation mechanism 31 (see FIG. 6A). Specifically, in the first embodiment, the two slide pipes 27 and 28 that support the individual top plates 22 are integrally attached by being fixed to the lower surface of the individual top plates 22 as a whole. By the action of the interlocking operation mechanism 31 formed as an object, the two are vertically moved in the same length while interlocking with each other, so that the individual top plate 22 is always raised and lowered while being kept horizontal.

The interlocking operation mechanism 31 is not particularly limited, but basically includes an active interlocking operation mechanism 31 and a passive interlocking operation mechanism 31.

The active interlocking operation mechanism 31 is for actively interlocking, and typically, as shown in FIG. 12, in the rack-pinion system described above, a driving means 38 such as a sensor and a motor is further provided, and a manual operation is performed. When the individual top plate 22 is raised or lowered by an operation, the movement is synchronized. In this case, the movement of each individual top plate 22 can be arbitrarily adjusted in combination with the control means 39 including a CPU and the like. For example, it is easy to reset the height change and treat it as one top plate, or it is possible to set the height of each individual top plate 22 according to a preset program.

Alternatively, it may be combined with the passive interlocking operation mechanism 31. For example, as shown in FIG. 13, when the fixing means is a cam lock having a cam lever 37, the biasing means is provided, and when one cam lock is released, the other cam lock of the individual top plate 22 is also released. A mechanical or electrical interlocking means 40 may be provided. As a result, when one of the cam locks is released, there is no need to further release the other cam lock, and even if both of the cam locks are released, the individual top plate 22 is supported by the urging mechanism, so that the leg 30 is not supported. It doesn't fall into.

In the first embodiment, two pairs of legs 30a-30c and 30b-30d facing each other through a common center point O are connected by supporting frames 32a-c and 32b-d arranged on the diameter. Has been done. At the intersecting position (center point O) of both support frames 32a-c and 32b-d, it is preferable to connect them by a connecting member 33 such as a bolt and a nut. When the top plate surface 22all is a quadrangle, as shown in the drawing, each leg 30 is connected to the leg 30 at the other vertex position of the quadrangle on the diagonal line. As a result, the structure is stable as a whole, while the support frame 32, which is the connecting member of the leg portion 30 is arranged without any hindrance when viewed from each user, so that it can be efficiently used even in a small space. Especially, this effect is great for users such as wheelchairs. Further, as shown in FIG. 7, since a stable connecting member 33 is formed at the center point O portion, it is possible to provide an extending member (not shown) from here to the apex of the individual top plate 22. is there.

Further, as shown in FIG. 6A, in the present embodiment, the support points of the individual top plates 22 by the slide pipes 27 and 28 are ribs protruding from the slide pipes 27 and 28 toward the center of the lifting table 21. Since 27a and 28a are provided and are formed at the outer ends of the individual tops 22 (the ends of the individual tops 22 that are proximal to the user), the inner ends of the individual tops 22 are different. Even when a large load is applied to the vicinity of the side portion 26, buckling of the individual top plate 22 can be reduced. As another method, as shown in FIG. 6B, the upper portions of the slide pipes 27 and 28 that are not inserted into the columns of the legs 30 may be twisted toward the center of the lifting table 21, or the same as in FIG. As shown in c), by bending the upper end portions of the slide pipes 27, 28 that are not inserted into the columns of the legs 30 into a substantially L-shape toward the center of the lifting table 21, each individual top plate 22. Even when a large load is applied to the vicinity of the inner end side portion 26, the individual top plate 22 can be prevented from buckling.

In addition, in the present embodiment shown in FIGS. 5 to 13, the support frames 32a-c and 32b-d connecting the leg portions 30 are members that extend horizontally, but as shown in FIG. You may form in. In this case, the support frames 32a-c and 32b-d form a cross arch, which increases the structural strength and forms a larger space in the central portion.

Further, in the first embodiment, in the void portion 34 formed at the central position of the top plate surface 22all, a tray-shaped flat plate is formed from the intersection of the support frames 32a-c and 32b-d toward the void portion 34. Can support a vase or other decoration. In addition, a power outlet for a mobile phone, a personal computer or the like may be provided in the central void 34, or a monitor screen or the like may be provided for each user. Since this is supported independently from any individual top plate 22, it can be used by each user regardless of the height of the individual top plate 22.

Next, the operation of the first embodiment will be described.

In the lifting table 21 of the first embodiment, the caster 35 is used to move to a desired position, and the lock mechanism 36 fixes the position.

Then, as shown in FIG. 11, for example, assuming four users in a wheelchair, when the height of the table of each user is different, the height of the individual top plate 22 of the lifting table 21 is adjusted. When the cam lever 37 arranged on the leg portion 30 of the desired individual top plate 22 is rotated by approximately 90° from the positions shown in FIGS. 5, 9 and 10, the cam lever 37 which is eccentric with respect to the rotation axis is moved to the slide pipe 27. , 28 move away from the outer surfaces of the slide pipes 27, 28, so that the slide pipes 27, 28 can be moved up and down. That is, the fixed state of the slide pipes 27 and 28 by the fixing member is released.

When the fixed state of the slide pipes 27, 28 is released, the individual top plate 22 automatically rises upward due to the action of the gas spring without using human hands. This allows the user to adjust the individual top plate 22 to a desired height. At this time, the two slide pipes 27 and 28 that support the individual top plates 22 are formed by being fixed to the individual top plates 22, respectively (see FIG. 12 and FIG. 12). By the action of the interlocking operation mechanism 31) shown in FIG. 13, the same length is raised while interlocking, and the individual top plate 22 is always raised while being kept horizontal. In this case, since the upward movement of the individual top plate 22 is assisted by the upward biasing force of the gas spring, the height can be easily adjusted. Further, the downward movement of the individual top plate 22 can be easily adjusted in height because a part of its own weight of the individual top plate 22 is offset by the upward biasing force of the gas spring. ..

After adjusting the individual top plate 22 to a desired height, the cam lever 37 is rotated by about 90° and set to the state shown in FIGS. It is pressed by the pipes 27 and 28. As a result, the slide pipes 27 and 28 are fixed to the leg portion 30, and the position of the individual top plate 22 is fixed.

By individually adjusting the height of each individual top plate 22 as described above, a maximum of four users having different physiques and usage patterns can use one lifting table 21. Further, since the lifting table 21 is provided with four individual top plates 22 whose heights can be independently adjusted, the lifting table 21 is prepared as compared with a conventional lifting table having only one top plate. It is possible to efficiently perform the work and the work of cleaning up the lifting table 21 after use. Further, since the conventional four lifting tables are integrated into one lifting table 21 having four individual top plates 22, the number of parts is reduced, the weight is reduced, and the workability during transportation is improved. Also improves. Furthermore, since the number of parts is reduced, it is possible to provide an inexpensive lifting table 21.

Further, according to the present embodiment, the user (seat) sits toward the center, which facilitates communication. Therefore, in nursing homes, etc., improvement of communication ability through meals and stimulation of brain activity can be expected. Further, the installation area can be greatly reduced in some cases as compared with the lifting table disclosed in Patent Document 2. Further, in the lifting table of Patent Document 2, the top plate is supported at a position distal to the user, but in the present embodiment, the outer end portion of each individual top plate 22 is supported by the support lifting drive means 23. Since it is supported at a position close to the user, it is easy for the user or the like to put weight on the individual top plate 22 and be stable. Furthermore, because of the light design as a whole, it can be used not only in nursing facilities but also in general stores such as restaurants and waiting rooms regardless of height difference, and it is possible to change the color of the individual top plate 22 and the center of the table. It is possible to add a variety of functions by providing a void portion 34 in the.

Next, with reference to FIGS. 15 to 18, an elevating table 21a according to a second embodiment of the present invention will be described.

The second embodiment shows an example in which a support frame 42 corresponding to the foldable support frame 12 shown in a skeleton form in FIG. 4B is used, and the portions common to the first embodiment are the same. The code is attached.

15 and 16 show a state in which the support frame 42 and the leg portion 30 are integrally assembled, and FIGS. 17 and 18 show a state in which the individual top plate 22 is further attached.

As shown in FIGS. 15, 16 and 18, the support frame 42 has a cross-shaped support hub 42c arranged at the center point O of the top plate, and four support branches 42d are radially provided from the support hub 42c. While being extended, each support branch 42d is hinge-joined with a pin 43 so as to be foldable to the support hub 42c and each leg 10 (attachment stay 44 portion).

The other structure is the same as that of the first embodiment.

According to the second embodiment, as shown in FIGS. 15 and 16, the support frame 42 and the leg portion 30 are integrally assembled in advance. Then, at the time of transfer or storage, as shown in FIG. 16, the support frame 42 is transferred and stored together with the individual top plates 22 in a disassembled state by folding the support frame 42 using the pins 43. At the time of use, as shown in FIG. 15, the support frame 42 is unfolded using each pin 43, and each individual top plate 22 is fixed to the ribs 27a, 28a of the two slide pipes 27, 28. 17 and FIG. 18 are assembled and used for use.

As described above, according to the lifting table 21a of the second embodiment, since the support frame 42 is foldable, it is possible to achieve compactness during transportation and storage, reduction of occupied space, and convenience during use. Can be secured.

Next, the lifting table 21b of the third embodiment of the present invention will be described with reference to FIGS.

The third embodiment shows an example using an individual top plate 22 and a foldable support frame 42 corresponding to the case where the outer edge portion 5 shown by the broken line in FIG. 2 is bent. The same parts as those in the example and the second embodiment are designated by the same reference numerals.

In the third embodiment, each of the individual top plates 22 is formed in a rectangular shape with two sides of the bent outer edge portion 25 having different lengths. Since the outer edge portion 25 is thus bent and has two sides, the user can sit down facing each side. When sitting on only one side, the individual top plate 22 can be widely used. When sitting on both sides, many users (up to 8 people) can use the common lift table 21b.

The present invention is not limited to the above-mentioned embodiments and examples, but can be modified as necessary.

According to the present invention, a plurality of users can adjust the height of the table according to their needs in such a manner that they can face each other. Further, it is possible to reduce the installation area although it can be used in a wheelchair. Furthermore, the overall weight is light and the manufacturing cost can be suppressed. Therefore, it can be widely used as a work space of a nursing facility, a welfare facility, a dining table, a table in a general restaurant, a work space in a meeting room, a waiting room, or the like.

1, 21, 21a, 21b Elevating table 2, 22 Individual top plate 2all, 22all Top plate surface 3, 23 Support elevating drive means 4, 24 Side part 5, 25 Outer end part 6, 26 Inner end part 7, 27 Lifting/driving mechanism 8, 28 Lifting/driving mechanism 9, 29 Connecting mechanism 10, 30 Leg 11, 31 Interlocking operating mechanism 12, 32, 42 Support frame 12c, 42c Support hub 12d, 42d Support branch 14, 34 Void 27a, 28a rib 33 connecting member 35 caster 36 locking mechanism 37 cam lever 38 driving means 39 control means 40 interlocking means 43 pin 44 mounting stay D dividing line O center point

Claims (4)

A lifting table having at least three individual top plates arranged in an annular shape, and a support lifting drive means for supporting and lifting the individual top plates.
Each of the individual top plates, a pair of side portions along a pair of dividing lines radially extending from a common center point, and a linear shape, a bent shape, and a curved shape that connects the outer ends of the pair of side portions. It is formed in a shape having an outer edge portion formed of any one or a combination of shapes,
The support lifting/lowering drive means is arranged at each of the outer end portions of each boundary portion between the plurality of individual top plates, and at the outer end portion, two adjacent individual top plates are not dispersed. As described above, the individual top plates are separately supported and are formed so as to be separately lifted and lowered .
Each of the support elevating and lowering driving means has a pair of elevating and lowering driving mechanisms that operate independently, and a connecting mechanism that integrally connects the pair of elevating and lowering driving mechanisms, and the two adjoining two elevating and lowering driving mechanisms are connected to each other. It is formed by separately supporting individual top plates,
The plurality of connection mechanisms are connected to each other by a support frame having a shape along each of the dividing lines radially extending from the common center point of the individual tops in order to maintain a mutual relation position. Lift table. The support frame is formed so as to be foldable between a connection portion with a support hub provided at the center point portion and a connection portion with each of the connection mechanisms. Lifting table. Wherein the pair of elevation drive mechanism of the adjacent two distinct supported individual top plate to have the respective bearing lifting drive means, characterized in that it is mounted in collateral to the legs of the said coupling mechanism The lifting table according to claim 1 or claim 2. The two elevating/lowering drive mechanisms that support the individual top plates at the outer ends of the pair of side portions of each of the individual top plates operate in association with the lifting and lowering of the individual top plates supported by both. An elevating table according to claim 2 or 3, further comprising:

Images