JPH0730754U - Folding table - Google Patents

Abstract

(57) [Abstract] [Purpose] While maintaining the same ease of opening and closing as a conventional folding table, the lower space of the top plate is widened to eliminate the cramp when the user sits on a chair and uses it. . [Structure] A top plate 1, an inverted U-shaped basic leg 2 and an upper leg 4 which are rotatably connected to a lower surface thereof, and upper and lower vertical rods 16 near upper ends of the left and right vertical rods 16 are vertical rods 13 of the upper leg 4. A lower leg 6 having a U-shape, which is foldably connected to the vicinity of the lower end of the base by a fold pin 5, and each intermediate part is rotatably connected to an intermediate part of the basic leg 2 by a rotary pin 7; Between the leg 4 and the lower leg 6, left and right vertical rods 13,
A structure of a folding table A including a stopper 19 provided for each 16. [Effect] Since there is no foot on the front side or a horizontal rod in the middle part, it is easy when sitting on a chair, and the flatness of the folded state is high, and the storage space can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a folding table. More specifically, the present invention relates to a folding table in which an X-shaped leg and a top plate can be interlocked to fold flatly, and basically, one user sits on a chair and heads.

[0002]

[Prior art]

 Conventionally, it has a top plate and an X leg that supports it, and the upper part of one leg can be freely bent by a hinge, so that the X leg can be folded while interlocking with the back side of the top plate. A table is used. As such a table, for example, a foldable pedestal P shown in FIGS. 11A and 11B is known (see Japanese Utility Model Laid-Open No. 58-24226). This is a top plate 101, a substantially U-shaped basic leg 102 whose free ends on both sides are hinged to the back surface of the top plate, and a short U whose free ends are hinged on the back surface of the top plate 101. A U-shaped lower leg 103, a U-shaped lower leg 105 hinged to the upper leg 103 in the vicinity of the upper end thereof, and a middle portion hinge-coupled to the middle of the basic leg 102, and an upper portion of the lower leg. It is composed of a stopper 106 that locks the lower portion of the upper leg 103 in an extended state.

This pedestal P can be folded while the top plate 101 and the X legs 102, 103, 105 are interlocked with each other by a so-called four-bar linkage mechanism, and when not in use, as shown in FIG. The lower leg 105 and the lower leg 105 can be nested and folded on the back side of the top plate 101. Further, since the lower ends 102a and 105a of the respective leg portions are widened in the front-rear direction, they can be stored in an upright state or used as a screen or the like. On the other hand, Japanese Utility Model Publication No. 43-13621 discloses a table in which the folding mechanism can be used to change the height in two steps, and Japanese Utility Model Publication No. 60-26000 discloses the same folding mechanism. It describes that the mechanism is adopted for an ironing board.

[0004]

[Problems to be solved by the device]

 Each of the above-mentioned conventional examples has the advantage of folding both legs and the top plate in one operation, but has the problem of poor accessibility to the top plate. That is, since these adopt the X-shaped folding legs 102, 103, 105, it is difficult to approach the top plate 101 from the cross surface side (the side in FIG. 11a), and the legs are obstructed even during standing work. It becomes a devil, and it is almost impossible to sit on a chair and head to the top board 101. Further, since the horizontal rods 107 and 108 are provided at the lower ends of the basic leg 102 and the lower leg 105, respectively, and the horizontal rod 109 of the upper leg 103 crosses the central portion, they can be approached from the parallel plane side (the side of FIG. 11b). Hateful. That is, with a conventional folding table, when using while sitting on a chair such as a work desk or writing table, the user's foot should be on the side of the lower end of the leg, regardless of standing work such as an ironing board. This is extremely troublesome because it hits the rods 107 and 108 and the knees and thighs hit the lateral rod 109 of the upper leg 103.

Therefore, in the conventional folding frame P or the like, as shown in FIG. 11A, the upper ends of the legs are gathered in a narrow area in the center of the back surface of the top plate 1 to improve accessibility from the four sides. At the same time, they are trying to eliminate the unstable structure caused by bending the lower ends of the legs to the front and rear or left and right. However, the stability of these tables is still insufficient, and the legs are bent back and forth to improve stability, so there is a problem that they do not become flat when folded.

The present invention has as its main technical problem to improve the usability especially when sitting on a chair or the like without impairing the easiness of folding in the conventional folding table. Another object of the present invention is to improve the stability of such a folding table when it is opened and to sufficiently secure the flatness when it is folded.

[0007]

Means for Solving the Problems A folding table according to the present invention is composed of (a) a top plate, (b) a pair of left and right vertical rods which are parallel to each other, and a horizontal rod which connects their upper ends to each other in an inverted U shape. An inverted U is formed from a basic leg which is formed in a letter shape and whose upper end is rotatably connected to the top plate, and (c) a pair of left and right vertical rods which are parallel to each other and a horizontal rod which connects the upper ends thereof. The upper leg is formed in a letter shape, and the upper leg near the upper end is rotatably connected to the top plate, and (d) a pair of left and right vertical rods that are parallel to each other, and the upper leg is near the upper end of each vertical rod. A lower leg that is foldably connected to the vicinity of the lower end of the vertical rod by a bending pin, and an intermediate portion in the longitudinal direction of each vertical rod is rotatably connected to an intermediate portion of the basic leg by a rotation pin. (E) Near the left and right connecting portions that connect the vertical rod of the lower leg and the vertical rod of the upper leg. Provided on one even without less of, is characterized in configuration by comprising a stopper for restraining the bending direction becomes downward convex upper and lower longitudinal 杆同 workers. The inverted U-shape means a shape in which the letter U of the alphabet is turned upside down, and includes a case where it is bent at a right angle.

In such a table, it is preferable that the lower legs have right and left vertical rods near the lower ends thereof connected to each other by a horizontal rod. Further, it is preferable that the lower leg is arranged inside the basic leg and the upper leg is arranged inside the lower leg. In that case, bend the lower end of the vertical rod of the basic leg and the lower end of the vertical rod of the lower leg to the outside in the left-right direction, respectively, and adjust the length from the turning pin on the lower leg to the lower end by turning the basic leg. It is preferably longer than the length from the pin to the lower end. In each of the above cases, it is preferable that each of the basic leg and the upper leg is formed by bending one pipe or rod into an inverted U shape, and further, each of the horizontal rods of the basic leg and the upper leg is formed. It is preferable that the cross section is circular and the outer peripheral surface is rotatably supported on the back surface of the top plate by a supporting member.

According to another aspect of the folding table of the present invention, (a) a top plate and (b) a pair of left and right vertical rods that are parallel to each other are provided, and the vicinity of the upper end thereof is rotated near the rear end of the top plate. A base leg that is movably connected, and (c) an upper leg that has a pair of left and right vertical rods that are parallel to each other and whose upper end is pivotally connected to the front edge of the top plate. d) It has a pair of left and right vertical rods that are parallel to each other, and the vicinity of the upper end of each vertical rod is foldably connected to the vicinity of the lower end of the vertical rod of the upper leg by a bending pin, and is arranged in the longitudinal direction of each vertical rod. A lower leg whose middle portion is rotatably connected to the middle portion of the basic leg by a rotation pin; (e) upper end portions of the vertical rods of the basic leg, upper end portions of the vertical rods of the upper leg, And at least the upper ends of the lower legs that extend above the bending pins. One feature is that a horizontal rod is provided to synchronize the left and right vertical rods.

[0010]

[Action]

 The method of unfolding and folding the table of the present invention is substantially the same as the conventional one, and both opening and closing can be done with one touch. On the other hand, in the first aspect of the table of the present invention, the pair of left and right vertical rods of the basic leg and the upper leg are connected at the upper ends thereof by the horizontal rods, and the horizontal rods do not pass near the lower ends. Furthermore, the horizontal rod is not passed near the upper end of the lower leg. Therefore, if the user faces the table with the side with the lower part of the basic leg extending toward the front facing the front, neither side bar will interfere with the legs or knees. That is, the table of the present invention has an inverted U-shape configuration in which the upper legs of the upper leg and the upper legs that do not disturb the user are connected with a horizontal rod, thereby facilitating the folding operation and making it light and simple. While maintaining the configuration as it is, the usability is greatly improved.

Further, in the table of the present invention, since the knees and feet are put between the parallel vertical rods of the legs and the user sits down, it is preferable to widen the space between the left and right vertical rods such as the basic legs as much as possible. Also in the front-back direction, the basic leg and the lower leg can be sufficiently widened. Therefore, the stability can be sufficiently increased. Moreover, the lower ends of the basic leg and the lower leg do not have to be bent back and forth, and therefore can be configured to be flat when folded.

In such a table, it is preferable that the lower legs of the lower leg on the opposite side to the user are connected by horizontal rods near the lower ends of the left and right vertical rods, thereby maintaining the freedom of the feet. The overall rigidity and the interlocking property between the left and right X legs can be further improved. Further, when the lower leg is arranged inside the basic leg and the upper leg is arranged inside the lower leg, the table having the above constitution should be folded compactly with the basic leg, the upper leg and the lower leg being in a nested state. The horizontal rod does not interfere with the vertical rod. Therefore, it can be more flatly folded. In that case, bend the lower end of the vertical rod of the basic leg and the lower end of the vertical rod of the lower leg to the left and right respectively, and adjust the length from the rotation pin of the lower leg to the lower end by the rotation pin of the basic leg. It is preferable that the length is longer than the length from the bottom to the lower end, so that the stability can be further improved while maintaining the flat folded state.

Further, in any of the above-mentioned cases, it is preferable that the basic leg and the upper leg are formed by bending one pipe or a rod into an inverted U shape, respectively. It is lightweight and easy to assemble. Further, when the horizontal rods of the basic leg and the upper leg are rotatably supported on the back surface of the top plate by the supporting member, the assembling work becomes easier.

[0014]

【Example】

 Next, an embodiment of the table of the present invention will be described with reference to the drawings. 1 is a perspective view of a table according to an embodiment of the present invention in a developed state, FIGS. 2 to 4 are front views, right side views and bottom views thereof, and FIG. 5 is an enlarged perspective view of a stopper in the table. 6 and 7 are a rear view and a side view, respectively, showing the folded state, FIG. 8 is a process diagram showing the process of developing from the folded state, and FIGS. 9 and 10 are other examples of the table of the present invention. It is a rear view of a folded state showing an example.

The table A shown in FIG. 1 comprises a top plate 1, an inverted U-shaped basic leg 2 rotatably attached to the back surface of the top plate 1, and an X leg together with the basic leg 2. It comprises a folding leg 3 rotatably connected to the back surface of the top plate 1. Further, the bending leg 3 is composed of an inverted U-shaped upper leg 4 which is shorter than the basic leg 2, and a lower leg 6 which is foldably connected to the upper leg 4 by a bending pin 5. Further, the middle portion of the lower leg 6 is rotatably connected to the middle portion of the basic leg 2 by a rotation pin 7. The top plate 1 is usually a rectangular wooden plate member that is long in the left and right directions. However, the material is not limited to this, and may be made of synthetic resin or metal, or may have a curved peripheral edge.

As shown in FIG. 2, the basic leg 2 has an inverted U-shape including a pair of left and right vertical rods 8 and 8 that are parallel to each other and a horizontal rod 9 that connects the upper ends of the rods. The lower ends of the vertical rods 8 and 8 are bent outward at right angles in the same plane. In this embodiment, the entire basic leg 2 is formed by bending a round pipe made of metal such as steel or aluminum. However, the vertical rod and the horizontal rod may be formed separately and fixed by welding or the like. Reference numeral 10 in FIG. 2 is a floor protection member fitted to the bent portion 11 also as a cover for covering the open end portion of the pipe forming the basic leg 2, and is made of rubber or plastic, for example. The base leg 2 is held by a pair of support members 12 formed by bending the plate into a so-called Ω shape, as shown in FIGS. The top surface of the top plate 1 is rotatably connected to the lower surface of the top plate 1 so as to be parallel to the rear edge.

In this embodiment, as shown in FIG. 4, the bent portion 11 does not extend beyond the lateral width of the top plate 1. Therefore, several tables A can be closely arranged side by side. However, if desired, the bent portion 11 (and also the vertical rod 8) may be laterally extended from the top plate 1. Further, it is preferable that the bent portion 11 has as wide a lateral width and a longitudinal width as possible within a range not protruding from the front, rear, left and right of the top plate 1. An auxiliary horizontal rod may be provided at a position slightly below the horizontal rod 9, in which case the rigidity is increased.

The upper leg 4 has an inverted U-shape composed of a pair of left and right vertical rods 13 and 13 which are parallel to each other and a horizontal rod 14 connecting the upper ends thereof, and like the basic leg 2, It is formed by bending one round pipe (see Fig. 6). A part of the upper leg 4 which is slightly inward of both ends of the horizontal rod 14 is rotatably connected to the lower surface of the top plate 1 by the same support 15 as the support 12. The horizontal rod 14 is arranged on the lower surface of the top plate 1 in parallel with the front edge of the top plate 1 and at a position slightly inside the front edge. (See Figure 4).

The lower leg 6 is composed of two vertical rods 16 and 16 made of circular pipes arranged in parallel with each other, and a thin circular pipe connecting the portions somewhat above the lower ends of the vertical rods 16 and 16. The vertical rods 16 and 16 are respectively bent at right angles toward the left and right outer sides as shown in FIG. Further, the same floor protection member 10 as described above is fitted to the bent portion 18. Further, as shown in FIG. 2, the vertical rods 16 of the lower leg 6 are arranged inside the basic leg 2 and outside the upper leg 4, and at the intermediate portions thereof, with respect to the intermediate portion of the basic leg 2, It is rotatably connected by the rotating pin 7. The upper end of each vertical rod 16 of the lower leg 6 is foldably connected to the lower end of the upper leg 4 by the bending pin 5 described above. With such a nested structure, when the table A is folded as shown in FIG. 6, the horizontal rods 14 of the upper legs and the horizontal rods 17 of the lower legs do not interfere with the vertical rods of the other legs, and the flat rod as a whole is flat. It has the advantage of folding.

The upper end of each vertical rod 16 of the lower leg extends a little above the bending pin 5, and as shown in FIG. 5, the inner surface of the upper end of the extension 16a, that is, The curved portion 19a of the stopper 19 made of a J-shaped plate is fixed to the upper surface side in the opened state as shown in FIG. The stopper 19 constrains the upper leg 4 and the lower leg 6 in a downward convex direction, that is, in a direction in which the opening angle (θ in FIG. 3) between the basic leg 2 and the lower leg 6 is widened, and restrains them. Only the bending (upward convex) in the opposite direction is allowed. The stopper 19 may be fixed to the upper leg 4 side, or the upper leg 4 may be extended downward and then provided on the extension of the upper leg 4 or the lower leg 6 side. Further, the stoppers 19 are individually provided on both the left and right folding legs 3, but only one may be provided depending on circumstances. Reference numeral 20 in FIG. 5 is a washer that is interposed between the pipes (vertical rods 13 and 16) to prevent slipping, and reference numeral 21 is a lid member made of plastic or the like that closes the open ends of the pipes. Is.

In the table A of this embodiment, as shown in FIG. 3, the length L1 from the rotation pin 7 of the basic leg 2 to the lower end is the length L2 from the rotation pin 7 of the lower leg 6 to the lower end. Has been made shorter than. Therefore, when the table A is folded as shown in FIG. 6, the bent portion 11 at the lower end of the basic leg 2 does not interfere with the bent portion 18 at the lower end of the lower leg 6 and can be folded flat as shown in FIG. . By adopting such a configuration, as shown in FIG. 3, the angle of the basic leg 2 with respect to the floor surface and the angle of the lower leg 6 with respect to the floor surface are different in the opened state. Therefore, the ratio of the length L3 from the rotation pin 7 of the basic leg 2 to the upper end and the length L3 from the rotation pin 7 of the folding leg 3 to the upper end is the same as that of the lower side (L1: L2 = L3: L4). ) To make the top plate 1 horizontal. Also, since the X-leg has a somewhat distorted shape in this way, as shown in FIGS. 3 and 4, the horizontal rod 9 of the basic leg 2 and the horizontal rod 14 of the upper leg 4 face the front and rear of the top plate 1. It is mounted eccentrically to the front side with respect to the center, and the stability is increased as much as possible by matching the four points at the lower end of the X leg with the size of the top plate 1 (the position of the corner). The top plate 1 may be tilted toward the user, and in that case, the lateral rod 9 of the basic leg 2 may be attached further to the front side.

Next, a method of using the table A will be described with reference to FIG. When opening the closed table A, first, as shown at the left end of FIG. 8, the table A is erected by the lower leg 6 with the upper surface side of the top plate 1 facing the user. Then, as shown in the center of FIG. 8, the front side (front side) of the tabletop 1 is manually lifted (arrow S) to open the X-legged person. As a result, the top plate 1, the basic leg 2, the upper leg 4, and the lower leg 6, which are respectively pivotally connected by the pivot pin 7 and the bending pin 5, act as a so-called 4-joint link mechanism, and moreover, the horizontal rod. 9 and 14 can open the whole in one motion while interlocking the left and right X legs. That is, it is not necessary to open and close each leg or each vertical rod. Then, as shown in the right end of FIG. 8, the vertical rod 13 of the upper leg 4 abuts on the stopper 19 and the upper leg 4 and the lower leg 6 extend linearly to complete the unfolding operation.

In the table A in the unfolded state as described above, the side where the lower end side of the basic leg 2 extends to the front side (the left side in the figure at the right end of FIG. 8) is used as the front surface. That is, when the opening operation is completed as described above, since the user N faces the front of the table A, the user N can sit down without correcting the direction of the table A. For example, as shown by an imaginary line, the user N arranges the chair R and the stool toward the front side of the table A and sits down on it. In that case, as is clear from FIG. 2, there is almost no obstacle between the left and right X-legs, especially a horizontal rod, so that a wide space is secured below the top plate 1. The horizontal rod 17 connecting the lower ends of the lower legs 6 is on the opposite side of the user N as shown in the right diagram of FIG. Therefore, when the user N sits on the chair R or the like and heads for the table A, the user N can head to the table A in a very comfortable position without getting in the way of putting feet or knees under the top plate 1.

In the table A in the open state as described above, when a force is applied from above, the X legs try to spread each other. However, since the basic leg 2 and the bending leg 3 are connected in a triangular shape, and the stopper 19 constrains the upper leg 4 and the lower leg 6 so as not to project downward, the shape thereof is stable. Can be maintained. Since frictional force acts on each rotating part to some extent, the table A is not folded by itself even if it is moved a little. However, if desired, an engaging portion (detent mechanism) capable of elastically surmounting is provided in the adjacent portion between the upper leg 4 and the lower leg 6, or a locking means for returning by a push button operation or the like is interposed. You can also In those cases, the expanded state can be maintained more reliably.

When folding the table, the upper leg 4 and the lower leg 6 are bent so as to be convex upward at the bending pins 5 in the opposite manner to when the table is opened, and the front side of the top plate 1 is bent. To rotate downward. This allows the top plate 1 and all the legs to be interlocked with each other, but can be easily folded in the reverse order of the white arrow. In the folded state, the basic leg 2, the lower leg 6 and the upper leg 4 do not interfere with each other as shown in FIG. 6, so that the state is extremely flat as shown in FIG. Therefore, for example, by arranging them vertically or by laying them horizontally, a number of tables A can be stored in a narrow space.

In the table A of the above-described embodiment, the lower ends of the vertical rods of the legs 2 and 6 are bent outward in the left and right directions, but the table of the present invention is not limited to the bent one, and is straight. It may be extended downward (see FIG. 10). In that case, it is not necessary for the basic leg 2 and the lower leg 6 to have different lengths from the pivot pin to the lower end. Further, if the rigidity or right-angle maintainability of the pivot pin 7 between the basic leg 2 and the lower leg 6 is sufficiently high, the lower side rod (17 in FIG. 2) of the lower leg 6 can be omitted. When the horizontal rod 17 on the lower side of the lower leg 6 is omitted in this way, the space at the foot on the back side of the top plate 1 becomes wider, and the accessibility from the rear side of the table A is also improved.

In the table B shown in FIG. 9, the lower ends of the vertical rods 16 of the lower leg 6 are connected by the horizontal rods 17. The entire lower leg 6 is formed by bending one pipe. This will improve the accessibility of the back side of the table to some extent. On the other hand, the basic leg 2 has its vertical rod 8 directly supported by a bearing 23 provided on the lower surface of the top plate 1. The horizontal rod 9 may be projected to the side of the vertical rod 8 to support it. The upper leg 4 is similarly supported by the bearing 24, and the horizontal rod 14 connecting the upper ends of the upper leg 4 is omitted. This one has the same number of parts as the number of parts, but has the same effect as the table A of the above embodiment. In some cases, the horizontal rod 9 at the upper end of the basic leg 2 may be omitted. As described above, the horizontal rod 14 at the upper end of the upper leg 4 and the horizontal rod 9 of the basic leg 2 are not always essential in the table of the present invention, and as long as there is no problem in strength and squareness, the number of parts is large. If this is the case, the left and right X-legs will be in tune with one or two of the upper ends of the basic legs 2, the upper ends of the upper legs 4, or the lower ends of the lower legs 6. If you have a horizontal rod.

In the table B shown in FIG. 9, instead of providing the horizontal rod 17 at the lower end of the lower leg 6, the upper end of the lower leg 6 is made slightly higher than the bending pin 5, and the extension 25 The upper ends may be connected by the horizontal rod 26. In this way, the horizontal rod 26 approaches the lower surface of the top plate 1, so that it does not interfere with the user's knees or the like, and the accessibility from the back side of the top plate 1 is increased to some extent. Further, the horizontal rod 26 provided at the upper end of the extension portion 25 can also be used as a stopper itself.

In the table C shown in FIG. 10, the horizontal rods of the pair of left and right upper legs 4 are omitted, the upper legs 4 are rotatably connected to the top plate 1 by the bearings 24, and the lower legs are placed inside the upper legs 4. The leg 6 is arranged, and the basic leg 2 is arranged inside the lower leg 6. This one also has the same operational effect as the above-mentioned table A, that is, the basic operational effect that it can be folded flat without disturbing the user's foot or knee. In this table C, the length from the pivot pin 7 of the lower leg 6 to the lower end is made longer than that of the basic leg, and the lower ends are connected by the horizontal rod 17. The configuration of providing the horizontal rod 17 can also be omitted.

Further, in the above-described embodiment, the horizontal rod has a circular cross-section and the outer peripheral surface of the horizontal rod can be freely rotated by the support tool. A shaft may be provided. In that case, the basic leg, the upper leg and the lower leg can be manufactured with a square pipe or the like.

[0031]

[Effect of device]

 The folding table of the present invention has the advantages of high stability and accessibility when opened while maintaining the same ease of opening and closing as the conventional table, and has a high flatness in the folded state. can do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a table of the present invention.

FIG. 2 is a front view showing a developed state of table A in FIG.

FIG. 3 is a side view showing a developed state of table A in FIG.

FIG. 4 is a bottom view showing a developed state of table A in FIG.

5 is an enlarged perspective view of a stopper on the table A of FIG. 1. FIG.

6 is a rear view showing a folded state of the table A of FIG. 1. FIG.

7 is a side view showing a folded state of the table A of FIG. 1. FIG.

8 is a process diagram showing a process of expanding the table A of FIG. 1 from the folded state. FIG.

FIG. 9 is a rear view of the table according to another embodiment of the present invention in a folded state.

FIG. 10 is a rear view of the table of the present invention in a folded state, showing another embodiment of the table.

FIG. 11a is a front view in an unfolded state showing an example of a conventional folding table, and FIG. 11b is a side view thereof.

12 is a side view showing a folded state of the table of FIG.

[Explanation of symbols]

 A Table 1 Top plate 2 Basic leg 4 Upper leg 5 Bending pin 6 Lower leg 7 Rotating pin 9 Horizontal rod 11 Bending part 14 Horizontal rod 17 Horizontal rod 19 Stopper B table C table

Claims (7)

[Scope of utility model registration request] 1. An inverted U-shape is composed of (a) a top plate, (b) a pair of left and right vertical rods parallel to each other, and a horizontal rod connecting their upper ends to each other, and the vicinity of the upper end is the top plate. It has an inverted U-shape composed of a rotatably connected basic leg, (c) a pair of left and right vertical rods parallel to each other, and a horizontal rod connecting their upper ends to each other. (D) a pair of left and right vertical rods that are parallel to each other, and upper end portions of the respective vertical rods are foldably connected to the upper rods near the lower ends of the vertical rods by bending pins. And a lower leg in which an intermediate portion in the longitudinal direction of each vertical rod is rotatably connected to an intermediate portion of the basic leg by a rotation pin, and (e) a vertical rod of the lower leg and a vertical length of the upper leg. Upper and lower vertical rods provided on at least one of the vicinity of the left and right connecting portions that connect the rods Folding table consisting of a stopper for restraining the bending downward to be convex in the direction. 2. The folding table according to claim 1, wherein the left and right vertical rods of the lower leg are connected by horizontal rods near the lower ends thereof. 3. A lower leg is arranged inside the basic leg,
3. The folding table according to claim 1, wherein the upper leg is arranged inside the lower leg. 4. The lower end of the vertical rod of the basic leg and the lower end of the vertical rod of the lower leg are each bent outward in the left-right direction, and the length from the rotation pin to the lower end of the lower leg is equal to that of the basic leg. The folding table according to claim 3, wherein the folding table is longer than the length from the rotating pin to the lower end. 5. The base leg and the upper leg are each 1
2. The folding table according to claim 1, wherein a pipe or a bar material of a book is bent and formed in an inverted U shape. 6. The horizontal rod of each of the basic leg and the upper leg has a circular cross section, and is rotatably supported on the back surface of the top plate by a supporting member at its outer peripheral surface.
The folding table according to 3, 4, or 5. 7. (a) a top plate, (b) a pair of left and right vertical rods that are parallel to each other, and a base leg whose upper end is rotatably connected to a rear edge of the top. (C) An upper leg having a pair of left and right vertical rods parallel to each other, the upper end of which is rotatably connected to the front edge of the top plate, and (d) a pair of left and right vertical rods which are parallel to each other. The vertical rods have upper ends near the upper ends of the upper legs near the lower ends of the vertical rods and are foldably connected by bending pins, and the longitudinal intermediate portions of the vertical rods are connected to the intermediate portions of the basic legs. A lower leg rotatably connected by a moving pin, and (e) extended above the upper ends of the vertical rods of the basic leg, the upper ends of the vertical rods of the upper legs, and the bending pin of the lower leg. At least one of the upper ends of the parts,
Folding table with horizontal rods for synchronizing the left and right vertical rods.