CN108741616A - A kind of variable area type square table - Google Patents

Abstract

The invention discloses a kind of variable area type square tables, including pedestal, supporting plate and the desktop regulating mechanism being arranged on supporting plate, the desktop regulating mechanism includes desktop splicing component and for being supported fixed desktop support component to desktop splicing component, wherein, the desktop splicing component includes outer layer splice plate and internal layer splice plate, wherein, the outer layer splice plate includes gusset and intermediate expansion plate, and the internal layer splice plate includes that plate is expanded at center；The desktop support component includes gripper shoe groups and the support connecting base at base center position, wherein is connected by the first driving mechanism between the gusset and gripper shoe groups；Intermediate expand between plate and gripper shoe groups is equipped with the connection of the second driving mechanism；The center is expanded plate and is arranged on the support connecting base.The desk can change the area of desktop, and have many advantages, such as that scalable area is big.

Description

A square table with variable area

technical field

The invention relates to a table, in particular to a square table with variable area.

Background technique

Table is a kind of commonly used furniture, people's life cannot do without it. Traditional tables are generally composed of fixed desktops, table legs and related connectors. This kind of table has poor applicability during use and cannot be adjusted according to the change of the number of people dining. It occupies a small space and is easy to accommodate, but when the number of diners increases, the size of the desktop is not enough; and when choosing a table with a large desktop, although it meets the use requirements when the number of diners increases, the space occupied by a table with a large desktop It is relatively large, and the number of people who use it is small and the frequency of use is low. Therefore, a table with a large table top takes up a lot of space and is not practical enough.

For this reason, people have designed various area variable desks. Existing this type variable table of area can be divided into two classes, and the first class is the trapezoidal foldable type square table, as the utility model patent announcement of CN 2071907U that notification number is a kind of economical family convenience table, the four sides of this table A foldable plate is provided. When the foldable plate is hidden, the dining table is a square table at this time. When the foldable plate is unfolded, the area of the dining table increases and becomes a round table. The second type is a table with an inserted flap. For example, the utility model patent with the authorized announcement number CN 2201833Y discloses a deformed dining table, which includes two semicircular table tops and two rectangular table tops. After the two semi-circular tabletops, unfold the two rectangular tabletops that are folded and hidden under the carrying-shaped tabletop and splice them together, which completes the switch from the small tabletop to the large tabletop.

But above-mentioned two kinds of desks have following deficiencies respectively in actual use:

For the first type of movable board foldable dining table, this type of dining table only adds an auxiliary folding board on the basis of the original square table. Because the area of the auxiliary board is limited, the number of people who can increase the dining table is small. For the second type of table with inserted flaps, although this type of table increases the size of the length of the table top, thereby increasing the number of diners, but the increase in the length of the table top will also cause the distance between the diners at the two ends of the semicircle. Increase, so that the scope of its pickled dishes is limited.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and provide an area-variable square table, which can change the area of the desktop and has the advantages of large expandable area and the like.

The technical scheme that the present invention solves the problems of the technologies described above is:

A square table with a variable area, including a base and a supporting plate, and a desktop adjusting mechanism arranged on the supporting plate, the desktop adjusting mechanism includes a table splicing assembly and a table supporting assembly for supporting and fixing the table splicing assembly , wherein the table board splicing assembly includes an outer layer splicing board and an inner layer splicing board, wherein the outer layer splicing board includes a corner board and a middle expansion board, and the inner layer splicing board includes a central expansion board; the table The plate support assembly includes a support plate group and a support connection seat located at the center of the base, wherein, the angle plate and the support plate group are connected by means of driving the angle plate to move downward along the direction from the inner layer to the outer layer and The first driving mechanism that lifts along the direction from the outer layer to the inner layer is connected; there is a device between the middle expansion board and the support plate group for driving the middle expansion board to lift along the direction from the inner layer to the outer layer. The second driving mechanism that moves and descends from the outer layer to the inner layer is connected; the central expansion board is arranged on the support connection seat.

Preferably, the first drive mechanism includes a first connecting rod whose one end is hinged to the supporting connection seat, a first slider hinged to the other end of the first connecting rod, and a first guide rail matched with the first slider; wherein, The first slider is fixedly connected with the corner plate, the first guide rail is arranged on the support plate group, and the first guide rail has an inclined surface inclined downward from the inner layer to the outer layer, and the support plate group and the bracket Rotation connection between plates. When working, push the corner plate located on the support plate group along the circumferential direction to cause relative rotation between the support plate group and the connecting work, and the rotation will drive the first slider to move on the first guide rail through the first connecting rod. The first guide rail has an inclined surface that slopes downward from the inner layer to the outer layer, so the movement of the first slider from the inner layer to the outer layer is a descending motion, and the movement of the first slider from the outer layer to the inner layer is a lifting motion , so as to meet the movement requirements of the gusset. The advantage of this arrangement is that the free transformation between the large desktop and the small desktop can be realized only when a thrust is applied to the corner plate or the connecting seat along the circumferential direction, so the operation is simple and convenient.

Preferably, the second drive mechanism includes a second link with one end hinged to the support connection seat, a second slider hinged with the other end of the second link, and a second guide rail matched with the second slider; wherein, The second slider is fixedly connected to the middle expansion board, the second guide rail is arranged on the support plate group, and the second guide rail has an inclined surface inclined upward from the inner layer to the outer layer, and the support plate group and the bracket Rotation connection between plates. When working, when the corner plate located on the support plate group is pushed along the circumferential direction, under the drive of the second crank sliding mechanism, the second slider moves on the second guide rail, due to the direction from the inner layer to the outer layer. The inclined rising section, so the movement of the second slider from the inner layer to the outer layer is a lifting motion, and the movement of the second slider from the outer layer to the inner layer is a descending motion, so as to meet the movement requirements of the middle expansion board.

Preferably, the support plate group includes a first support plate and a second support plate arranged above the first support plate, wherein the first support plate and the second support plate are rotatably connected to the supporting plate, and the The angle plate is arranged above the second support plate, the angle plate and the first support plate are connected through the first driving mechanism, the middle expansion plate is arranged on the second support plate, and the second support plate is also provided with There are movement slots for the passage of the first slider. The advantage of this setting is that the corner board and the middle expansion board are separately arranged on the first support board and the second support board. Compared with the way of being arranged on one support board, on the one hand, it can facilitate the diagonal board and the middle expansion board. The middle expansion boards are controlled separately, on the other hand, the distribution density can be reduced, and the mutual interference between the corner boards and the middle expansion boards can be avoided during the movement.

In a preferred solution of the present invention, wherein, the support plate group includes a first support plate and a second support plate arranged above the first support plate, wherein, the first support plate, the second support plate and the supporting plate fixedly connected between them, and rotationally connected between the supporting connecting seat and the supporting plate. During operation, the support connection seat, the first connecting rod, the first slider and the first guide rail constitute the first crank linkage mechanism, wherein the support connection seat constitutes the crank in the first crank linkage mechanism, and the crank is pushed to rotate , can realize the opening and closing movement of the gusset; similarly, the support connection seat, the second connecting rod, the second slider and the second guide rail constitute the second crank linkage mechanism, wherein the support connection seat constitutes the second The crank in the crank-link mechanism pushes the crank to rotate, which can realize the opening and closing movement of the middle expansion plate.

Preferably, the bottom of the first support plate is provided with a plurality of rollers along the circumferential direction, and the supporting plate is provided with roller guide grooves in cooperation with the rollers. By arranging the above-mentioned multiple rollers and roller guide grooves, the rotation movement of the first support plate can be supported, guided and friction-reduced during operation, so that the rotation movement of the first support plate can be carried out more smoothly .

Preferably, the bottom of the second support plate is provided with a plurality of pulleys along the circumferential direction, the first support plate is provided with a plurality of positioning grooves in cooperation with the plurality of rollers, and the support plate is also matched with the pulleys A pulley guide groove is provided on the ground, and the bottom of the pulley guide groove has a lifting surface for controlling the upward or downward movement of the pulley, and the pulley moves in the pulley guide groove after passing through the positioning groove. When working, when a thrust is applied to the corner plate along the circumferential direction, the first support plate rotates, and then drives the second support plate to rotate together through the positioning groove. The lifting surface of the lifting movement, so the pulley can carry out the lifting movement under the action of the lifting surface, and then drive the second support plate and the middle expansion plate on it to carry out the lifting movement. The lifting movement can not only complete the lifting movement of the middle expansion plate alone , can also complete the lifting movement of the middle expansion plate together with the second guide rail in the second slider crank mechanism, so as to increase the stroke of the lifting movement of the middle expansion plate.

Preferably, the central expansion board is connected to the support connection seat through a vertical sliding structure, and the second support board is provided with a support for supporting and positioning the central expansion board. When working, the second support plate can contact the central expansion plate during the upward movement under the lifting action of the lifting surface, and then drive the central expansion plate to move upward together. When in contact, the support member can move the central expansion plate Support and positioning, so that the central expansion board and the middle expansion board after stretching and opening movement are located on the same plane, so that after contact, no matter where the second support board rises to any position, the central expansion board and the middle expansion board can always maintain On the same plane, the automatic alignment of the central expansion board and the middle expansion board is realized.

Preferably, there are four corner plates, each of which is a square plate, respectively distributed on the four corners of the table support assembly, and the number of the middle expansion boards is also four, respectively distributed on two adjacent corners Between the boards, the central expansion board is one piece, and the central expansion board is located at the center of the supporting board. During the design, through the patchwork combination of four middle expansion boards, four corner boards and one central expansion board, the table can be transformed into a small square table before deformation and a large square table after deformation. Compared with the large long table, the large square table , the distance between each point on the circumference and the center is more uniform, that is, the range of dishes for the diners is almost the same, so the use effect is good.

In a preferred solution of the present invention, the base is composed of a platform lifting device for adjusting the height of the pallet and the desktop. When working, the height of the desktop can be adjusted through the platform lifting device, so as to meet the needs of different desktop heights.

Preferably, the platform lifting device includes two anchor rods at the bottom and two telescopic rhombic frames above the two anchors, the telescopic rhombic frames are hinged inside, and the space between the two telescopic rhombic frames is Through the connection between the first adjusting rod and the second adjusting rod, a screw and a nut are arranged between the first adjusting rod and the second adjusting rod, and the screw rods respectively pass through the first adjusting rod and the second adjusting rod to cooperate with the nut. When working, the position of the nut on the screw rod is controlled by turning the nut, and then the distance between the first adjusting rod and the second adjusting rod is controlled. Once the distance is determined, a self-locking structure is formed inside the telescopic rhombus frame, that is, in the In the non-retractable state, the height of the desktop is fixed. Thus, the height of the desktop can be adjusted according to the method.

Working principle of the present invention is:

Since the gusset and the supporting connection seat are connected by the first driving mechanism that moves downward from the inner layer to the outer layer and lifts along the direction from the outer layer to the inner layer, the gusset is connected from the inner layer to the outside. The movement of the layer includes both the horizontal movement in the horizontal direction and the vertical downward movement in the vertical direction. The direction of the gusset is lifted and moved along the direction from the outer layer to the inner layer. The second drive mechanism is connected, so the movement of the gusset from the inner layer to the outer layer includes both the horizontal movement in the horizontal direction and the Vertical upward motion in the vertical direction.

When in use, when the table is a small desktop table, that is, the corner board and the middle expansion board are in the "closed" state. At this time, the desktop of the small desktop table is only composed of the corner board, and the corner board, the middle expansion board and the center expansion board The relative positions are: the corner boards are distributed on the uppermost layer, the central expansion board is located on the middle layer, and the middle expansion board is located on the lowermost layer.

When the table is a large desktop table, that is, when the corner board and the middle expansion board are in the "open" state, the desktop of the large desktop table is composed of the corner board, the middle expansion board and the central expansion board at this time, wherein the corner board Distributed at the four corners of the outer layer, the middle expansion board is distributed between two adjacent corner boards of the outer layer, and the central expansion board is distributed on the inner layer of the central expansion board.

The switching principle of desktop from small desktop to large desktop is as follows:

Since the gusset and the supporting plate group are connected by the first driving mechanism, the first driving mechanism can make the middle expansion board move outward and at the same time descend in the height direction, and the descending movement makes the gusset slowly Moving from the uppermost position to the middle position, similarly, since the middle expansion board and the support plate group are also connected by a second drive mechanism, the second drive mechanism can make the middle expansion board move outwards Also make a rising movement in the height direction, which makes the gussets slowly move from the lowest position to the middle position (the gap between the gussets is staggered to accommodate the expansion in the middle), so that when the gussets and the middle When the expansion movement reaches the fully "opened" state, the corner board, the middle expansion board and the central expansion board are just on the same plane, thereby completing the task of patchwork from a small desktop to a large desktop.

Compared with the prior art, the present invention has the following beneficial effects:

1. When the variable-area table of the present invention deforms and expands the desktop area, a new large desktop is formed by combining the middle expansion board, the central expansion board and the corner boards. The large desktop is relatively smaller than the small one before deformation. As far as the desktop is concerned, the area has been greatly increased (it can be seen intuitively from the area of the middle expansion board and the central expansion board), and the increase in the area includes both the length of the desktop and the width of the desktop. Therefore, each side of the table The distance between the point and the center is more uniform, that is, the diners can pick up dishes in the same range, so there will be no situation that the diners can't pick up the dishes, so the use effect is better.

2. When the variable-area table of the present invention is in a small desktop state, the middle expansion board is cleverly hidden in the bottom layer, and the center expansion board is hidden in the middle layer, so that when the table area is switched, the uppermost corner board The center expansion board and the middle expansion board located on the bottom layer are stretched outwards and also move closer to the middle central expansion board in the vertical direction, so that after the expansion movement of each board is completed, they can also be on the same level. Interlinked with each other, the design is ingenious.

Description of drawings

Fig. 1 and Fig. 2 are the three-dimensional structure schematic diagram of a specific embodiment of a kind of area changeable square table of the present invention, wherein, Fig. 1 is the three-dimensional structure schematic diagram when the table is in the state of small desktop; Fig. 2 is when the table is in the state of large desktop A schematic diagram of the three-dimensional structure.

FIG. 3 is an exploded view of FIG. 2 .

FIG. 4 is a second perspective view of FIG. 3 .

Fig. 5 is a structural schematic diagram of the corner plate and the first driving mechanism of the variable-area square table shown in Fig. 2 .

FIG. 6 is a schematic diagram of the structure after removing the gussets in FIG. 5 .

Fig. 7 is a structural schematic diagram of the middle expansion board and the second driving mechanism in the area-variable square table shown in Fig. 2 .

FIG. 8 is a schematic diagram of the structure in FIG. 7 after the middle expansion board is removed.

FIG. 9 is a schematic view of the structure in FIG. 8 after removing the first support plate.

Fig. 10 is a schematic diagram of the structure when the support connection seat is fixed and the support plate group and the support plate are connected in rotation, and the arrows in the figure indicate the rotation of the support plate group.

Figure 11 is a diagram of the connection relationship between the support plate group and the central expansion plate and the supporting plate corresponding to the fourth embodiment, and the arrows in the figure indicate the rotation of the support connection seat.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to Fig. 1-Fig. 4, an area-variable square table of the present invention includes a base, a supporting plate 2 and a desktop adjustment mechanism arranged on the supporting plate 2. The desktop adjusting mechanism includes a table splicing assembly and a The table board support assembly for supporting and fixing the assembly, wherein the table board splicing assembly includes an outer layer splicing board and an inner layer splicing board, wherein the outer layer splicing board includes a corner board 3 and a middle expansion board 4, and the inner layer splicing board The layer splicing board includes a central expansion board 5; the table board support assembly includes a support board group 6 and a support connection seat 7 located at the center of the base 1, wherein the corner board 3 and the support board group 6 are connected by a The driving gusset 3 is connected to the first drive mechanism 8 that moves downward from the inner layer to the outer layer and lifts from the outer layer to the inner layer; the middle expansion board 4 is connected to the supporting board group 6 There is a second drive mechanism 9 for driving the middle expansion board 4 to move upward along the direction from the inner layer to the outer layer and to move downward along the direction from the outer layer to the inner layer; the central expansion board 5 is arranged on the support connecting seat 7.

Referring to Fig. 1-Fig. 4, there are four corner plates 3, and each corner plate 3 is a square plate, respectively distributed on the four corners of the table support assembly, and the middle expansion board 4 is also four, respectively Distributed between two adjacent corner plates 3 , the central expansion plate 5 is one piece, and the central expansion plate 5 is located at the center of the supporting plate 2 . During design, through the patchwork combination of four middle expansion boards 4, four corner boards 3 and one central expansion board 5, the table can be made into a small square table before deformation, and a large square table after deformation. As far as the table is concerned, the distance between each point on the circumference and the center is more uniform, that is, the range of dishes for the diners is almost the same, so the use effect is good.

Referring to Fig. 6 and Fig. 10, the first drive mechanism 8 includes a first connecting rod 8-1 hinged at one end to the support connecting seat 7, and a first slider hinged at the other end of the first connecting rod 8-1. 8-2 and the first guide rail 8-3 matched with the first slider 8-2; wherein, the first slider 8-2 is fixedly connected with the corner plate 3, and the first guide rail 8-3 is set on the support On the plate set 6 , the first guide rail 8 - 3 has an inclined surface inclined downward from the inner layer to the outer layer, and the support plate set 6 is connected to the supporting plate 2 in rotation. When working, push the corner plate 3 on the support plate group 6 along the circumferential direction so that the relative rotation occurs between the support plate group 6 and the connection, and the rotation will drive the first slider 8-1 through the first connecting rod 8-1 2 moves on the first guide rail 8-3, because the first guide rail 8-3 has an inclined surface that slopes downward from the inner layer to the outer layer, so the movement of the first slider 8-2 from the inner layer to the outer layer is In the descending movement, the movement of the first slider 8 - 2 from the outer layer to the inner layer is a lifting movement, so as to meet the movement requirements of the gusset 3 . The advantage of this arrangement is that the free transformation between the large desktop and the small desktop can be realized only when a thrust is applied to the corner plate 3 or the connecting seat along the circumferential direction, so the operation is simple and convenient.

7 and 8, the second driving mechanism 9 includes a second connecting rod 9-1 hinged at one end to the support connecting seat 7, and a second slider 9-1 hinged at the other end of the second connecting rod 9-1. 2 and the second guide rail matched with the second slider 9-2; wherein, the second slider 9-2 is fixedly connected with the middle expansion board 4, and the second guide rail is arranged on the support plate group 6, the first The two guide rails have an inclined surface inclined upward from the inner layer to the outer layer, and the support plate group 6 is connected to the supporting plate 2 in rotation. When working, when the corner plate 3 on the support plate group 6 is pushed along the circumferential direction, driven by the second crank sliding mechanism, the second slider 9-2 moves on the second guide rail. The rising section of the layer inclined towards the outer layer, so the movement of the second slider 9-2 from the inner layer to the outer layer is a lifting motion, and the movement of the second slider 9-2 from the outer layer to the inner layer is a descending motion, thus Satisfy the motion requirement of the middle expansion board 4.

Referring to Fig. 6, the first guide rail 8-3 includes a descending surface in the middle and horizontal surfaces at both ends, wherein the descending surface is used for the lifting movement of the first slider, and the horizontal plane is used for the movement of the first slider post positioning.

Referring to Fig. 7, the support plate group 6 includes a first support plate 6-1 and a second support plate 6-2 arranged above the first support plate 6-1, wherein the first support plate 6-1 and The second support plate 6-2 is rotationally connected with the supporting plate 2, the angle plate 3 is arranged above the second support plate 6-2, and the angle plate 3 and the first support plate 6-1 pass through the first support plate 6-1. A driving mechanism 8 is connected, and the middle expansion plate 4 is arranged on the second support plate 6-2, and the second support plate 6-2 is also provided with a movement slot 6-3 for the passage of the first slider 8-2 . The advantage of this arrangement is that the corner plate 3 and the middle expansion plate 4 are separately arranged on the first support plate 6-1 and the second support plate 6-2. Compared with the way of being arranged on one support plate, On the one hand, it can facilitate the separate control of the corner board 3 and the middle expansion board 4 , and on the other hand, it can reduce the distribution density to avoid mutual interference between the corner board 3 and the middle expansion board 4 during the movement.

The bottom of the first support plate 6-1 is provided with a plurality of rollers along the circumferential direction, and the supporting plate 2 is provided with roller guide grooves in cooperation with the rollers. By arranging the above-mentioned multiple rollers and roller guide grooves 2-1, during operation, the rotation movement of the first support plate 6-1 can be supported, guided and friction-reduced, so that the first support plate 6-1 1 can be performed more smoothly.

Referring to Fig. 8, the central expansion board 5 is connected to the support connection seat 7 through a vertical sliding structure, and the second support board 6-2 is provided with a support member 5- for supporting and positioning the central expansion board 5 1. When working, the second support plate 6-2 can contact the central expansion plate 5 during the upward movement under the lifting action of the lifting surface, and then drive the central expansion plate 5 to move upward together. When in contact, the support member 5 -1 can support and locate the central expansion board 5, so that the central expansion board 5 and the middle expansion board 4 after stretching and opening are located on the same plane, so that after contact, no matter the second support board 6-2 rises to At any position, the central expansion board 5 and the middle expansion board 4 can always be kept on the same plane, thereby realizing the automatic alignment of the central expansion board 5 and the middle expansion board 4 .

Referring to Fig. 1, the base 1 is composed of a platform lifting device for adjusting the height of the pallet and the desktop, and the platform lifting device includes two anchor rods at the bottom and two telescopic rhombus bars above the two anchors. The frames are hingedly connected inside the telescopic rhombic frame, and the two telescopic rhombic frames are connected through a first adjustment rod and a second adjustment rod, and a screw and a nut are arranged between the first adjustment rod and the second adjustment rod, and the screw rod Respectively pass through the first adjusting rod and the second adjusting rod to cooperate with the nut. When working, the position of the nut on the screw rod is controlled by turning the nut, and then the distance between the first adjusting rod and the second adjusting rod is controlled. Once the distance is determined, a self-locking structure is formed inside the telescopic rhombus frame, that is, in the In the non-retractable state, the height of the desktop is fixed. Thus, the height of the desktop can be adjusted according to the method. Thereby it can adapt to the needs of different table heights.

Referring to Fig. 1-Fig. 9, the working principle of the present invention is:

Since the corner plate 3 is connected to the supporting connection seat 7 by the first drive mechanism 8 that moves downward from the inner layer to the outer layer and lifts along the direction from the outer layer to the inner layer, the corner plate 3 is connected by The movement of the inner layer to the outer layer not only includes the horizontal movement in the horizontal direction, but also includes the vertical downward movement in the vertical direction; Lifting motion from the inner layer to the outer layer and lowering motion along the direction from the outer layer to the inner layer are connected to the second drive mechanism 9, so the movement of the gusset 3 from the inner layer to the outer layer includes both horizontal The horizontal sub-movement also includes the vertical upward sub-movement in the vertical direction.

During use, when the table is a small desktop table, that is, the corner board 3 and the middle expansion board 4 are in the "closed" state. At this time, the desktop of the small desktop table is only composed of the corner board 3. And the relative position of the central expansion board 5 is: the corner board 3 is distributed on the uppermost layer, the central expansion board 5 is located in the middle layer, and the middle expansion board 4 is located in the lowermost layer.

When the table is a large desktop table, that is, when the corner board 3 and the middle expansion board 4 are in the "open" state, the desktop of the large desktop table is composed of the corner board 3, the middle expansion board 4 and the central expansion board 5. , wherein, the corner boards 3 are distributed at the four corners of the outer layer, the middle expansion board 4 is distributed between two adjacent corner boards 3 of the outer layer, and the central expansion board 5 is distributed on the inner layer of the central expansion board 5 .

The switching principle of desktop from small desktop to large desktop is as follows:

Since the gusset 3 and the support plate group 6 are connected by the first drive mechanism 8, the first drive mechanism 8 can make the middle expansion plate 4 perform a downward movement in the height direction while moving outward. The corner plate 3 slowly moves from the uppermost position to the middle position. Similarly, since the middle expansion plate 4 and the support plate group 6 are also connected by the second drive mechanism 9, the second drive mechanism 9 can make the The middle expansion board 4 also makes an upward movement in the height direction while moving outwards, and this upward movement makes the angled plate 3 slowly move from the position located at the lowest layer to the position located in the middle layer (the gap between the angled plates 3 is staggered for In this way, when the corner plate 3 and the middle expansion move to the fully “opened” state, the corner plate 3, the middle expansion plate 4 and the central expansion plate 5 are just on the same plane, thereby completing the small desktop Patchwork tasks to large tabletops.

Refer to Embodiment 1 for implementation of other implementation modes other than the above in this embodiment.

Example 2

The difference between this embodiment and Embodiment 1 is that the support plate group is composed of the first support plate 6-1, and the angle plate, the middle expansion plate, the first drive mechanism and the second drive mechanism are arranged on the first support plate 6-1. on the support plate 6-1. The purpose of such setting is that the supporting function can be realized by only one board, so the structure is simple, the consumables are less, and the production cost is low.

Refer to Embodiment 1 for implementation of other implementation modes other than the above in this embodiment.

Example 3

Referring to Fig. 9, the difference between this embodiment and Embodiment 1 is that the bottom of the second support plate 6-2 is provided with a plurality of pulleys 6-4 along the circumferential direction, and the first support plate 6-1 A plurality of positioning grooves 6-5 are arranged on the upper part in cooperation with a plurality of rollers, and a pulley guide groove 2-1 is arranged in cooperation with the pulley 6-4 on the supporting plate 2, and the bottom of the pulley guide groove 2-1 has A lifting surface for controlling the upward movement or downward movement of the pulley 6-4. The pulley 6-4 moves in the pulley guide groove 2-1 after passing through the positioning groove 6-5. When working, when a thrust is applied to the corner plate 3 along the circumferential direction, the first support plate 6-1 rotates, and then drives the second support plate 6-2 to rotate together through the positioning groove 6-5. During the rotation, due to The bottom of the pulley guide groove 2-1 has a lifting surface for controlling the lifting movement of the pulley 6-4, so the pulley 6-4 can carry out lifting movement under the effect of the lifting surface, and then drive the second support plate 6-2 and its The middle expansion board 4 on the upper body carries out the lifting movement, and the lifting movement can complete the lifting movement of the middle expansion board 4 alone, and can also complete the lifting movement of the middle expansion board 4 together with the second guide rail in the second crank slider mechanism, so that The stroke of the lifting movement of the middle expansion board 4 can be increased.

Refer to Embodiment 1 for implementation of other implementation modes other than the above in this embodiment.

Example 4

Referring to Fig. 11, the difference between this embodiment and Embodiment 1 is that the support plate group 6 includes a first support plate 6-1 and a second support plate 6-2 arranged above the first support plate 6-1 , wherein, the first supporting plate 6-1 and the second supporting plate 6-2 are fixedly connected to the supporting plate 2, and the supporting connecting seat 7 is rotationally connected to the supporting plate 2. During operation, the support connection seat 7, the first connecting rod 8-1, the first slider 8-2 and the first guide rail 8-3 constitute the first crank linkage mechanism, wherein the support connection seat 7 constitutes the first crank The crank in the link mechanism pushes the crank to rotate, which can realize the opening and closing movement of the gusset 3; similarly, the support connecting seat 7, the second connecting rod 9-1, the second slider 9-2 and The second guide rail constitutes a second crank-link mechanism, wherein the support connecting seat 7 constitutes a crank in the second crank-link mechanism, and the crank is pushed to rotate to realize the opening and closing movement of the middle expansion plate 4;

Refer to Embodiment 1 for implementation of other implementation modes other than the above in this embodiment.

The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above content, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention are all Replacement methods that should be equivalent are all included within the protection scope of the present invention.

Claims (10)

1. a kind of variable area type square table, including pedestal and supporting plate, which is characterized in that further include the desktop tune being arranged on supporting plate Mechanism is saved, which includes desktop splicing component and for being supported fixed desktop branch to desktop splicing component Support component, wherein the desktop splicing component includes outer layer splice plate and internal layer splice plate, wherein the outer layer splice plate packet Gusset and intermediate expansion plate are included, the internal layer splice plate includes that plate is expanded at center；The desktop support component includes gripper shoe groups With the support connecting base at base center position, wherein by being used to drive gusset between the gusset and gripper shoe groups Make descending motion along the direction by internal layer outer layers and makees the first driving that lifting moves along by the direction of outer layers towards inner layers Mechanism connects；Intermediate expand between plate and gripper shoe groups is equipped with for driving intermediate plate of expanding along by internal layer outer layers Make lifting movement and connected along the second driving mechanism for making descending motion by the direction of outer layers towards inner layers in direction；It opens up at the center Panel is arranged on the support connecting base.

2. variable area type square table according to claim 1, which is characterized in that first driving mechanism include one end with The hinged first connecting rod of support connecting base, first sliding block hinged with the other end of first connecting rod and with the cooperation of the first sliding block First guide rail；Wherein, first sliding block is fixedly connected with gusset, and first guide rail is arranged in gripper shoe groups, this first There is the inclined surface tilted down by internal layer outer layers on guide rail, be rotatablely connected between the gripper shoe groups and supporting plate.

3. variable area type square table according to claim 2, which is characterized in that second driving mechanism include one end with The hinged second connecting rod of support connecting base, second sliding block hinged with the other end of second connecting rod and with the cooperation of the second sliding block Second guide rail；Wherein, second sliding block is expanded plate with centre and is fixedly connected, and second guide rail is arranged in gripper shoe groups, Have by the acclivitous inclined surface of internal layer outer layers on second guide rail, is rotatablely connected between the gripper shoe groups and supporting plate.

4. variable area type square table according to claim 1 or 2, which is characterized in that the gripper shoe groups include first Fagging and the second support plate being arranged above the first support plate, wherein first support plate and the second support plate and supporting plate Between be rotatablely connected, the gusset is located at the top of the second support plate, is driven by described first between gusset and the first support plate Motivation structure connects, and the intermediate plate of expanding is arranged in the second support plate, is additionally provided with for described first in second support plate Sliding block structure by movement slots.

5. variable area type square table according to claim 4, which is characterized in that first support plate and the second support plate It is fixedly connected between supporting plate, is rotatablely connected between the support connecting base and supporting plate.

6. variable area type square table according to claim 5, which is characterized in that the bottom of first support plate is along circle Circumferential direction is equipped with multiple idler wheels, is ordinatedly equipped with idler wheel guide groove with idler wheel on the supporting plate.

7. variable area type square table according to claim 5, which is characterized in that the bottom of second support plate is along circle Circumferential direction is equipped with multiple pulleys, is ordinatedly equipped with multiple locating slots in first support plate with multiple idler wheels, on the supporting plate It is also ordinatedly equipped with pulley guide groove with pulley, the bottom of the pulley guide groove has for controlling pulley ascending motion or decline The lifting face of movement, the pulley move after passing through the locating slot in pulley guide groove.

8. variable area type square table according to claim 1, which is characterized in that the gusset is four pieces, and every block of gusset is equal It for square plate, is respectively distributed on four angles of desktop support component, the intermediate expansion plate is also four pieces, is respectively distributed to adjacent Two gussets between, it is one piece that plate is expanded at the center, which expands plate and be arranged on support connecting base.

9. variable area type square table according to claim 1, which is characterized in that the pedestal is by being used to adjust supporting plate and table The platform lifting device of face height is constituted.

10. variable area type square table according to claim 9, which is characterized in that the described platform lifting device includes position Two ground foot levers in bottom end and two scalable diamond shape frames above two ground tripods, scalable diamond shape lower portion Articulated connection is connected by the first adjusting rod and the second adjusting rod between two scalable diamond shape frames, the first adjusting rod and the Screw rod and nut are equipped between two adjusting rods, the screw rod is each passed through the first adjusting rod and the second adjusting rod and coordinates with nut.