Rotation regulating member, stopper structure, and folding furniture

Abstract

To provide a rotation regulating member which can be used in a reversible folding table.SOLUTION: The rotation restricting member 100 includes the flat-plate portion 103, the first abutting portion 101 protruding from the outer periphery of the flat-plate portion 110 to one side, and the two second abutting portions 102 protruding from both sides of the first abutting portion 101 to the other side, the first member 12, the flat-plate portion 103, and the second member 11 are held so as to be rotatable relative to each other, and in the first state, the first abutting portion 101 abuts against the first side surface 12b of the first member 12. One of the second abutting parts 102 abuts on the first side surface 11b of the second member 11 to restrict one rotation of the first member 12 with respect to the second member 11, and in the second state in which the first member 12 is rotated from the first state with respect to the second member 11, the first abutting part 101 abuts on the second side surface 12a of the first member 12 and the other second abutting part 102 abuts on the second side surface 11a of the second member 11. The other rotation of the first member 12 to the second member 11 is regulated.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rotation restricting member, a stopper structure, and folding furniture. [Background technology]

[0002] Conventionally, one example of folding furniture is a folding table, which is provided with a stopper structure that prevents the legs from opening beyond a certain angle relative to the tabletop (see Patent Document 1). This conventional stopper structure can fix the legs in a state where the legs are open relative to the tabletop, and in a closed state where the legs are parallel to the tabletop. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication No. 59-130536 Summary of the Invention [Problem to be solved by the invention]

[0004] However, this conventional folding table having a stopper structure uses only one surface of the table top. An object of the present invention is to provide a rotation restricting member and stopper structure that can be used in a folding table in which both the front and back surfaces of the table top are usable, and a folding table using the same. [Means for solving the problem]

[0005] In order to solve the above problems, a first aspect of the present invention provides a locking mechanism comprising: a flat plate portion provided with a connecting hole; a first contact portion protruding from an outer periphery of the flat plate portion to one side of the flat plate portion; and two second contact portions protruding from both sides of the first contact portion on the outer periphery of the flat plate portion to the other side of the flat plate portion, wherein a first member is disposed on the one side of the flat plate portion and a second member is disposed on the other side of the flat plate portion, and the first member, the flat plate portion, and the second member are held so as to be relatively rotatable with respect to each other about an inter-member connecting axis passing through the connecting hole, and in a first state in which the first member and the second member are in a predetermined positional relationship, the first abutment portion abuts against a first side surface of the first member, and one of the second abutment portions abuts against a first side surface of the second member, thereby restricting one rotation of the first member relative to the second member; and in a second state in which the first member has rotated relative to the second member from the first state to the other unrestricted direction about the inter-member connecting shaft, the first abutment portion abuts against a second side surface of the first member opposite to the first side surface, and the other second abutment portion abuts against a second side surface of the second member opposite to the first side surface, thereby restricting the other rotation of the first member relative to the second member. A rotation restricting member is provided.

[0006] A second aspect of the present invention is a rotation restricting member, the first member, and the second member, wherein the first member and the second member are long plate-shaped, the inter-member connecting shaft passes through one end of each of the first member and the second member and the rotation restricting member, the other end of the second member is attached to a fixed portion so as to be rotatable about the fixed portion connecting shaft, and the other end of the first member is attached to a rotating portion so as to be rotatable about the rotating portion connecting shaft, the rotating portion being attached to the fixed portion so as to be rotatable about the rotating shaft, A stopper structure is provided that restricts the opening angle of the rotating portion relative to the fixed portion, centered on the rotation axis, so that it does not exceed the opening angle when the first abutment portion and the second abutment portion are approximately in a straight line.

[0007] An angle-limiting hole extending along an arc centered on the fixed part connecting axis may be provided on one of the side surfaces of the second member or the fixed part, and a moving part that moves inside the angle-limiting hole may be provided on the other side surface of the second member or the fixed part.

[0008] Furthermore, a third aspect of the present invention is a table comprising: a tabletop as the fixed part; a frame surrounding the outer periphery of the tabletop with a certain gap; legs as the rotating part that are inserted into the gap between the tabletop and the frame, are held rotatably about a rotation axis relative to the tabletop, and are movable from one side of the tabletop to the other side of the tabletop through the gap by rotating about the rotation axis; and the stopper structure. the other end of the first member is rotatably attached to the leg around the rotating part connecting shaft, and when the tip of the leg is on one side of the tabletop, the first abutment part abuts against a first side surface of the first member and one of the second abutment parts abuts against a first side surface of the second member, and when the tip of the leg is on the other side of the tabletop, the first abutment part abuts against a second side surface of the first member and the other second abutment part abuts against a second side surface of the second member.

[0009] A cap member having a fitting portion formed on its outer periphery may be attached to the tip of the leg, and when the entire leg enters the gap and becomes parallel to the frame, the fitting portion may fit into the outer periphery of the frame, thereby holding the leg in the gap. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a rotation restricting member and stopper structure that can be used in a reversible folding table in which both the front and back sides of the table top can be used, and a folding table using the same. [Brief explanation of the drawings]

[0011] [Figure 1]FIG. 1 is a perspective view of a folding table 1 with its surface 21 facing upward. [Figure 2] FIG. 2 is a perspective view of the folding table 1 in a state where the back surface 22 is facing up, which is upside down from FIG. [Figure 3] 10 is a diagram showing a state in which the entire leg 5 is inserted into the gap 6 and is parallel to the frame 3. FIG. [Figure 4] FIG. 4 is an enlarged view of the tip portion of the leg 5 in the state shown in FIG. 3. [Figure 5] FIG. 2 is an exploded perspective view of the stopper structure 10. [Figure 6] 1A to 1C are diagrams illustrating the operation of the folding table 1 and the stopper structure 10. [Figure 7] 7 is a diagram illustrating the operation of the folding table 1 and the stopper structure 10, continuing from FIG. 6. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a description will be given of a rotation restricting member 100, a stopper structure 10 including the rotation restricting member 100, and folding furniture including the stopper structure 10, according to an embodiment of the present invention. In the embodiment, a folding table 1 will be described as an example of folding furniture.

[0013] (folding table 1) Fig. 1 is a perspective view of folding table 1 with front surface 21 facing up. Fig. 2 is a perspective view of folding table 1 with back surface 22 facing up, which is upside down compared to Fig. 1. Folding table 1 comprises a top plate 2, a frame 3 that surrounds the periphery of top plate 2 with a certain gap 6 therebetween, legs 5 that are inserted into gap 6 between top plate 2 and frame 3, and a stopper structure 10 that limits the opening of legs 5 relative to top plate 2 to a predetermined angle.

[0014] The folding table 1 of this embodiment is a reversible folding table 1 in which the front surface 21 and the back surface 22 of the tabletop 2 can be used. The legs 5 (at their tip ends) can move from one side of the tabletop 2 to the other side of the tabletop 2 through the gap 6 by rotating about the leg rotation axis 55 relative to the tabletop 2 and the frame 3. The legs 5 can move between a state in which they are on one side of the tabletop 2 as shown in FIG. 1 and a state in which they have moved to the other side of the tabletop 2 as shown in FIG. 2.

[0015] (Tabletop 2) The tabletop 2 is, for example, rectangular and made of natural wood, but is not limited to this. The top surface 21, which is the top surface in the state shown in Figure 1, is in a solid state, giving off a natural warmth. The back surface 22, which is the top surface in the state shown in Figure 2, is covered with a metal plate that will not burn even if hot food is placed on it.

[0016] (Frame 3) The frame 3 is, but is not limited to, for example an aluminum pipe with a circular cross section, and surrounds the outer periphery of the top plate 2 with a certain gap 6 therebetween.

[0017] (leg 5) The legs 5 are also not limited to, but are for example, aluminum pipes with a circular cross section, and four legs 5a, 5b, 5c, and 5d are provided. Two legs 5a and 5b arranged on one side of the tabletop 2 in the longitudinal direction have one end connected to each other by a connecting portion 50 to form a U-shaped connecting leg 5A. Two legs 5c and 5d arranged on the other side of the tabletop 2 in the longitudinal direction have one end connected to each other by a connecting portion 50 to form a U-shaped connecting leg 5B.

[0018] 1, the connecting leg 5A and the connecting leg 5B are arranged so that the connecting part 50 is on the upper side of the tabletop 2 and the tip side of the leg 5 is on the lower side of the tabletop 2. A screw is threaded into the portion of the leg 5 that passes through the gap 6, passing through the frame 3 from the outside of the frame 3 and the leg 5, and into the tabletop 2. The screw serves as a leg rotation axis 55, allowing the leg 5 to rotate relative to the tabletop 2 and the frame 3.

[0019] The leg 5 is sized so that the entirety of the leg 5 can fit into the gap 6 when the connecting leg 5A and the connecting leg 5B rotate around the leg rotation axis 55. That is, the connecting leg 5A and the connecting leg 5B are each slightly smaller than the inner circumference of the frame 3 cut in half, and slightly larger than the outer circumference of the table top 2 cut in half. Figure 3 shows the state of the folding table 1 when the entire leg 5 fits into the gap 6 and is parallel to the frame 3.

[0020] (Cap member 7) Fig. 4 is an enlarged view of the tip portion of the leg 5 in the state shown in Fig. 3. A cap member 7 is attached to the end of the leg 5. The cap member 7 is made of, for example, rubber, and is provided with a bottomed hole 71 through which the leg 5 is inserted. When the tip of the leg 5 is inserted into the bottomed hole 71 of the cap member 7, the leg 5 does not come into direct contact with the ground or floor, but the cap member 7 comes into contact with the ground or floor, preventing the floor from being scratched and the leg 5 from slipping, getting dirty, or being damaged.

[0021] The outer periphery of the cap member 7 is provided with a fitting portion 72 that is concavely curved in a cross section perpendicular to the central axis of the bottomed hole 71. The concave curved shape is a shape that fits into the convex curve of the outer periphery of the frame 3. When the entire leg portion 5 is inserted into the gap 6 and parallel to the frame 3, as shown in Figures 3 and 4, the fitting portion 72 of the cap member 7 fits into the outer periphery of the frame 3. This locks the leg portion 5 to the frame 3, and the leg portion 5 is held within the gap 6. In this state, the folding table 1 becomes a single plate-like shape and is most compact, and because the leg portion 5 is locked, the folding table 1 can be easily carried and stored when not in use.

[0022] (Stopper structure 10) 5 is an exploded perspective view of the stopper structure 10. The stopper structure 10 includes a first member 12, a second member 11, and a rotation restricting member 100 disposed between the first member 12 and the second member 11. Washers 13 are disposed between the first member 12 and the rotation restricting member 100 and between the second member 11 and the rotation restricting member 100.

[0023] (Rotation restriction member 100) The rotation restricting member 100 comprises a flat plate portion 103 having a connecting hole 103a, a first abutment portion 101 protruding from the outer periphery of the flat plate portion 103 to one side of the flat plate portion 103, and two second abutment portions 102 (102a, 102b) protruding from both sides of the first abutment portion 101 on the outer periphery of the flat plate portion 103 to the other side of the flat plate portion 103.

[0024] (Flat plate part 103) The flat plate portion 103 is, for example, a substantially isosceles triangle. In this embodiment, the connecting hole 103a is circular and its center is located on a perpendicular line drawn from the apex to the base of the isosceles triangle.

[0025] (First contact part 101) The first contact portion 101 protrudes from the base of an approximately isosceles triangle that is the outer periphery of the flat plate portion 103 to one side of the flat plate portion 103 (the side where the second member 11 is disposed). The first contact portion 101 extends a predetermined length along the base of the approximately isosceles triangle.

[0026] (Second contact part 102) The second contact portion 102 protrudes from the base of an approximately isosceles triangle that is the outer periphery of the flat plate portion 103 toward the other side of the flat plate portion 103 (the side where the first member 12 is disposed). The two second contact portions 102 (102a, 102b) are identical in shape, are equidistant from the first contact portion 101 in this embodiment, and extend a predetermined length along the base of the approximately isosceles triangle. In other words, the first contact portion 101 and the two second contact portions 102 (102a, 102b) extend in a substantially straight line.

[0027] (Second member 11) In the embodiment, the second member 11 and the first member 12 are long plate members. The second member 11 is longer than the first member 12. The second member 11 has an inter-member connection hole 11c at one end, a top plate connection hole 11d at the other end, and an angle restriction hole 11e at the end adjacent to the top plate connection hole 11d. The angle restriction hole 11e extends along an arc having a predetermined central angle centered at the center of the top plate connection hole 11d. In the embodiment, the predetermined central angle is approximately 90 degrees, but is not limited to this.

[0028] As shown in Figures 6 and 7 (described later), a top plate connecting shaft 23 is inserted through a top plate connecting hole 11d of the second member 11, and the top plate connecting shaft 23 is attached to the top plate 2. An angle restricting screw 24 serving as a moving part that moves relatively within the angle restricting hole 11e is inserted through the angle restricting hole 11e of the second member 11, and the angle restricting screw 24 is attached to the top plate 2. The second member 11 is rotatable around the top plate connecting shaft 23. However, the rotation angle of the second member 11 during rotation is restricted within a range in which the angle restricting screw 24 can move within the arc-shaped angle restricting hole 11e.

[0029] (First member 12) An inter-member connecting hole 12c is provided at one end of the first member 12, and a leg connecting hole 12d is provided at the other end. As shown in Figures 6 and 7 described below, a leg connecting shaft 56 is inserted into the leg connecting hole 12d of the first member 12, and the leg connecting shaft 56 is attached to the leg 5. The first member 12 is rotatable around the leg connecting shaft 56.

[0030] The inter-member connecting shaft 14 is fixed by being inserted from the first member 12 side through the inter-member connecting hole 12c on the first member 12 side, the washer 13, the connecting hole 103a of the flat plate portion 103, the washer 13, and the inter-member connecting hole 11c of the second member 11 in that order. This allows the first member 12, the flat plate portion 103, and the second member 11 to be held so as to be rotatable relative to one another around the inter-member connecting shaft 14.

[0031] (Operation of the folding table 1 and stopper structure 10) 6 and 7 are diagrams illustrating the operation of the folding table 1 and the stopper structure 10. FIG.

[0032] (Figure 6(a), first state) Figure 6(a) is an enlarged view of the connecting leg 5A side of Figure 1. In Figure 6(a), the side of the leg 5 closer to the connecting part 50 than the leg rotation axis 55 is on the front surface 21 side of the tabletop 2, and the side of the leg 5 closer to the tip than the leg rotation axis 55 is on the back surface 22 side of the tabletop 2.

[0033] The state shown in FIG. 6(a) is a first state in which the second member 11 and the first member 12 of the stopper structure 10 are aligned on a straight line.

[0034] In the first state, the second member 11 and the first member 12 are aligned, so the distance between the tabletop connecting shaft 23 and the leg connecting shaft 56 does not become any longer. Therefore, the opening angle θ between the leg 5, the frame 3, and the tabletop 2, centered on the leg rotation shaft 55, is at its maximum. In other words, this is the state in which the connecting legs 5A and 5B shown in FIG. 1 are most open. In other words, this is the state in which the gap between the portion of the tip of the connecting leg 5A where the cap member 7 is attached and the portion of the tip of the connecting leg 5B where the cap member 7 is attached is the widest.

[0035] Even if a load is applied from above to the tabletop 2, the opening angle θ between the leg 5 and the frame 3 and the tabletop 2 is at its maximum angle, and the tabletop 2 is held stably. At this time, the angle restriction screw 24 is located at the upper end of the angle restriction hole 11e in the figure.

[0036] In the first state, the first contact portion 101 of the rotation restricting member 100 presses against the upper first side surface 12b of the first member 12. One second contact portion 102b of the second contact portion 102 presses against the upper first side surface 11b of the second member 11. The other second contact portion 102a of the second contact portion 102 is in a free state, not pressing against anything.

[0037] Therefore, when the inter-member connecting shaft 14 is fixed and the rotation of the second member 11 and the first member 12 about the inter-member connecting shaft 14 is considered, rotation of the second member 11 toward the first side surface 11b (counterclockwise rotation in the figure) is restricted, but rotation toward the second side surface 11a (clockwise rotation in the figure) is possible. Rotation of the first member 12 toward the first side surface 12b (clockwise rotation in the figure) is restricted, but rotation toward the second side surface 12a (counterclockwise rotation in the figure) is possible. Therefore, it is possible to rotate the leg 5 about the leg rotation shaft 55 in the direction of arrow A2, i.e., to rotate the end of the leg 5 to which the cap member 7 is attached, closer to the tabletop 2. However, it is not possible to rotate the leg 5 about the leg rotation shaft 55 in the direction opposite to the direction of arrow A2.

[0038] (Figure 6(b)) Fig. 6(b) is a diagram showing a state in which the leg 5 has been rotated in the direction of arrow A2 around the leg rotation axis 55 from the state in Fig. 6(a). At this time, the opening angle θ between the leg 5 and the frame 3 / top board 2 becomes smaller than that in Fig. 6(a).

[0039] At this time, inter-member connecting shaft 14 moves in the direction of arrow A1. Second member 11 rotates in the direction of arrow A1 around top plate connecting shaft 23. Angle restriction hole 11e also rotates around top plate connecting shaft 23, and the position of angle restriction screw 24 in angle restriction hole 11e becomes lower in the figure than in Figure 6(a).

[0040] (Figure 6(c)) Fig. 6(c) is a diagram showing a state in which the leg 5 is further rotated in the direction of arrow A2 around the leg rotation axis 55 from the state in Fig. 6(b). At this time, the opening angle θ between the leg 5 and the frame 3 / top board 2 becomes even smaller than in Fig. 6(b).

[0041] Inter-member connecting shaft 14 moves further in the direction of arrow A1 than in Figure 6(b). That is, second member 11 rotates further in the direction of arrow A1 than in Figure 6(b) about top plate connecting shaft 23. Angle restriction hole 11e also rotates further about top plate connecting shaft 23 than in Figure 6(b), and the position of angle restriction screw 24 in angle restriction hole 11e is lower in the figure than in Figure 6(b).

[0042] (Figure 7(a)) 7(a) is a diagram showing a state in which the leg 5 is further rotated in the direction of arrow A2 around the leg rotation axis 55 from the state in FIG. 6(c). At this time, the opening angle θ between the leg 5 and the frame 3 / tabletop 2 becomes zero degrees.

[0043] The inter-member connecting shaft 14 moves further in the direction of arrow A1 than in Figure 6(c). The second member 11 rotates around the tabletop connecting shaft 23 in the direction of arrow A1 than in Figure 6(b), and becomes parallel to the side surfaces of the second member 11, the first member 12, the legs 5, the frame 3, and the tabletop 2. The second member 11 rotates around the tabletop connecting shaft 23 in the direction of arrow A1 than in Figure 6(b). The angle limiting hole 11e also rotates around the tabletop connecting shaft 23 more than in Figure 6(b), and the position of the angle limiting screw 24 in the angle limiting hole 11e moves downward in the figure to approximately the center of the angle limiting hole 11e.

[0044] Here, since the second member 11 is longer than the first member 12, the tabletop connecting shaft 23 and the leg connecting shaft 56 do not overlap, and even though the tabletop connecting shaft 23 and the leg connecting shaft 56 protrude in opposite directions, they do not interfere with each other, and the rotation of the leg 5 is not hindered by the tabletop connecting shaft 23 and the leg connecting shaft 56.

[0045] 3 and 4, when the entire leg 5 is inserted into the gap 6 and parallel to the frame 3, the fitting portion 72 of the cap member 7 fits onto the outer periphery of the frame 3. This locks the leg 5 to the frame 3, and the leg 5 is held within the gap 6. In this state, the folding table 1 becomes a single plate-like structure and is at its most compact, and since the leg 5 is locked, the folding table 1 can be easily carried and stored when not in use.

[0046] (Figure 7(b)) 7(b) is a diagram showing a state in which the inter-member connecting shaft 14 has rotated further in the direction of arrow A1 than in FIG. 7(a). At this time, the leg 5 rotates in the direction of arrow A2 in the figure around the leg rotation shaft 55. As a result, the opening angle θ between the leg 5 and the frame 3 / top board 2 becomes a negative angle when the angle in FIG. 6 is taken as a positive angle.

[0047] 7(a), the inter-member connecting shaft 14 moves in the direction of arrow A1. The side of the leg 5 closer to the connecting portion 50 than the leg rotation shaft 55 is closer to the back surface 22 of the tabletop 2, and the side of the leg 5 closer to the tip of the leg rotation shaft 55 is closer to the front surface 21 of the tabletop 2. At this time, the position of the angle restricting screw 24 in the angle restricting hole 11e is lower than the center in the figure.

[0048] (Figure 7(c)) 7(c) shows a state in which the inter-member connecting shaft 14 has rotated further in the direction of arrow A1 than in the state shown in FIG. 7(b). At this time, the leg 5 further rotates in the direction of arrow A2 in the figure around the leg rotation shaft 55. As a result, the absolute value of the opening angle θ between the leg 5 and the frame 3 / top board 2 becomes even larger than in FIG. 7(b). The position of the angle limiting screw 24 in the angle limiting hole 11e is lower in the figure than in FIG. 7(b).

[0049] (Figure 7(d), second state) Figure 7(d) shows a state in which the inter-member connecting shaft 14 has rotated further in the direction of arrow A1 than in the state of Figure 7(c). At this time, the leg 5 further rotates in the direction of arrow A2 in the figure around the leg rotation shaft 55. As a result, the absolute value of the opening angle θ between the leg 5 and the frame 3 / tabletop 2 becomes even larger than in Figure 7(b).

[0050] 7(d) is a second state in which the second member 11 and the first member 12 are aligned in the stopper structure 10. When the folding table 1 is turned upside down, the rear surface 22 of the top plate 2 becomes the upper surface as shown in FIG.

[0051] In the state shown in FIG. 7(d), the second member 11 and the first member 12 are aligned, so the distance between the tabletop connecting shaft 23 and the leg connecting shaft 56 does not become any longer. Therefore, the absolute value of the opening angle θ between the legs 5 and the frame 3 and the tabletop 2 is the maximum angle that cannot be increased any further. In other words, the tip of connecting leg 5A and connecting leg 5B are in the most open state. In other words, the gap between the part of the tip of connecting leg 5A where cap member 7 is attached and the part of the tip of connecting leg 5B where cap member 7 is attached is the widest.

[0052] Even if a load is applied to the tabletop 2 from above, the opening angle θ between the legs 5 and the frame 3 and the tabletop 2 is a maximum angle that does not increase any further, so the tabletop 2 is held stably.

[0053] At this time, the angle restriction screw 24 is located at the lower end of the angle restriction hole 11e in the figure. Therefore, the angle of the second member 11 relative to the tabletop 2 does not become any larger. In other words, the movement angle of the second member 11 around the tabletop connecting shaft 23 is limited to the range from the position in FIG. 6(a) to the position in FIG. 7(d), i.e., the range of the central angle of the angle restriction hole 11e.

[0054] The first contact portion 101 of the rotation restricting member 100 presses against the first side surface 12b of the first member 12 in the first state, but presses against the second side surface 12a opposite the first side surface 12b of the first member 12 in the second state. The other second contact portion 102a of the second contact portion 102 is in a free state, not pressing against anything, in the first state, but presses against the second side surface 11a of the second member 11 in the second state. The one second contact portion 102b of the second contact portion 102 presses against the first side surface 11b of the second member 11 in the first state, but is in a free state in the second state.

[0055] Therefore, when considering the rotation of the second member 11 and the first member 12 around the fixed inter-member connecting shaft 14, rotation of the second member 11 toward the second side surface 11a (clockwise rotation in the figure) is restricted, but rotation toward the first side surface 11b (counterclockwise rotation in the figure) is possible. Rotation of the first member 12 toward the second side surface 12a (counterclockwise rotation in the figure) is restricted, but rotation toward the first side surface 12b (clockwise rotation in the figure) is possible. Therefore, it is possible to rotate the leg 5 around the leg rotation shaft 55 in the direction shown in FIG. 7(b), i.e., to rotate the portion of the end of the leg 5 to which the cap member 7 is attached closer to the tabletop 2.

[0056] As described above, the rotation restricting member and stopper structure of this embodiment can provide a folding table in which both the front and back surfaces of the table top can be used.

[0057] Although the preferred embodiment of this embodiment has been described above, the present invention is not limited to this.

[0058] For example, in the above embodiment, a folding table 1 was described as an example of folding furniture of the present invention, but the folding furniture of the present invention is not limited to this and may be other furniture such as a folding chair or a folding table, as long as it has a tabletop and legs.

[0059] In the above embodiment, the top surface 21 is made of natural wood and the back surface 22 is made of metal, but this is not limiting. For example, the top surface 21 and back surface 22 may be made of different materials other than natural wood and metal, or may be made of different colors.

[0060] The shape of the flat plate portion 103 of the rotation restricting member 100 is not limited to an isosceles triangle, but may be other shapes such as a semicircle or a rectangle.

[0061] As the rotation restricting member 100, the first abutment portion 101 and the two second abutment portions 102 (102a, 102b) do not have to extend in the same straight line, and depending on the application and the shapes of the second member 11 and the first member, the first abutment portion 101 and the two second abutment portions 102 (102a, 102b) may be arranged at positions other than on the same straight line.

[0062] In the embodiment, the second member 11 is longer than the first member 12, but the present invention is not limited to this. The second member 11 may be shorter than the first member 12.

[0063] In the embodiment, the second member 11 is provided with an angle restriction hole 11e that extends along an arc centered on the top plate connecting shaft 23, and the angle restriction screw 24 is attached to the side surface of the top plate 2 as a moving part that moves relatively inside the angle restriction hole 11e. However, the present invention is not limited to this, and the side surface of the top plate 2 may be provided with an angle restriction hole 11e that extends along an arc centered on the top plate connecting shaft 23, and a moving part that moves inside the angle restriction hole 11e may be provided on the surface of the second member 11 facing the top plate 2. [Explanation of symbols]

[0064] 1 table 2 Top plate (fixed part) 21 Surface 22 Back side 23 Top plate connecting shaft (fixed part connecting shaft) 24 Angle control screw (moving part) 3 frames 5 Legs 6. Gap 7 Cap member 72 Fitting part 10 Stopper structure 11 Second member 11a Second side 11b 1st side 11d Top plate connection hole 11e Angle regulation hole 12 First member 12a 2nd side 12b 1st side 12d Leg connection hole 14 Connecting shaft between components 50 Connecting part 55 Leg rotation axis (rotation axis) 56 Leg connecting shaft (rotating part connecting shaft) 100 Rotation restriction member 101 1st contact part 102 Second contact part 102a The other second contact portion 102b One of the second contact portions 103 Flat plate part

Claims

1. a flat plate portion provided with a connecting hole; a first contact portion protruding from an outer periphery of the flat plate portion toward one side of the flat plate portion; two second contact portions projecting from both sides of the first contact portion on the outer periphery of the flat plate portion toward the other side of the flat plate portion, a first member is disposed on the one side of the flat plate portion, a second member is disposed on the other side of the flat plate portion, and the first member, the flat plate portion, and the second member are held so as to be rotatable relative to one another about an inter-member connecting axis that passes through the connecting hole; In a first state in which the first member and the second member are in a predetermined positional relationship, the first abutment portion abuts against a first side surface of the first member, When one of the second contact portions contacts the first side surface of the second member, restricting one rotation of the first member relative to the second member; In a second state in which the first member rotates relative to the second member from the first state in an unrestricted direction about the inter-member connecting shaft, the first contact portion contacts a second side surface of the first member opposite to the first side surface, The other second abutment portion abuts against a second side surface of the second member opposite to the first side surface, restricting the rotation of the first member relative to the second member; Rotation restriction member.

2. The rotation restricting member according to claim 1 ; The first member; the second member, The first member and the second member are long plate-shaped, the inter-member connecting shaft passes through one end of each of the first member and the second member and the rotation restricting member, the other end of the second member is attached to the fixed portion so as to be rotatable about a fixed portion connecting shaft, the other end of the first member is attached to the fixed portion so as to be rotatable about a rotation axis, and ... an opening angle of the rotating portion with respect to the fixed portion, the opening angle being centered on the rotation axis, is restricted so as not to be equal to or greater than the opening angle when the first contact portion and the second contact portion are substantially aligned in a straight line; Stopper structure.

3. an angle restriction hole extending along an arc centered on the fixed portion connecting shaft is provided on one of the side surfaces of the second member or the fixed portion; a moving portion that moves inside the angle restriction hole is provided on the other of the side surfaces of the second member and the fixed portion; The stopper structure according to claim 2 .

4. A top plate as the fixing portion; a frame surrounding the periphery of the top plate with a certain gap; a leg portion as the rotating portion, which is inserted into a gap between the tabletop and the frame, is held rotatably about a rotation axis relative to the tabletop, and is movable from one side of the tabletop to the other side of the tabletop through the gap by rotating about the rotation axis; The stopper structure according to claim 2 or 3; Equipped with the other end of the second member is attached to the top plate so as to be rotatable about the fixed portion connecting shaft, the other end of the first member is attached to the leg portion so as to be rotatable about the rotating portion connecting shaft, When the tip of the leg is on one side of the tabletop, the first contact portion contacts a first side surface of the first member, one of the second contact portions contacts the first side surfaces of the two members, When the tip of the leg is on the other side of the tabletop, the first contact portion contacts a second side surface of the first member, The other second abutment portion abuts against the second side surface of the two members. Folding furniture.

5. A cap member having a fitting portion formed on the outer periphery is attached to the tip of the leg portion, When the entire leg portion is inserted into the gap and the leg portion is parallel to the frame, the fitting portion fits into the outer periphery of the frame, and the leg portion is held in the gap.

5. Folding furniture according to claim 4.

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