Folding table
Patent Information
- Application Number
- JP2021011487
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-01-27
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2041-01-27
Abstract
Description
[Technical field]
[0001] The present invention relates to a folding table having foldable legs. [Background technology]
[0002] Tables having a top plate and legs, the legs of which can be folded, are disclosed in Patent Documents 1 and 2 listed below. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2020-68967 A [Patent Document 2] Utility Model Registration No. 3093054 Summary of the Invention [Problem to be solved by the invention]
[0004] Conventional folding tables, when placed outdoors on uneven ground, had problems with rattling due to the legs not being sufficiently fixed, particularly along the longitudinal direction of the table top.
[0005] An object of an embodiment of the present disclosure is to provide a folding table whose legs can be sufficiently fixed and which reduces wobbling even when placed on uneven ground outdoors. [Means for solving the problem]
[0006] The folding table of an embodiment of the present disclosure is characterized by comprising a tabletop, foldable legs supporting the underside of the tabletop, and a stay having one end connected to the underside of the tabletop and the other end connected to the legs, which can be expanded and contracted as the legs are opened and closed, and can be fixed at any length.
[0007] By configuring as described above, when the legs are opened relative to the tabletop, the length of the stays can be finely adjusted as desired depending on how the tips of the legs hit the ground. This allows the legs to be fixed in a taut state relative to the tabletop by the stays, thereby reducing the rattling of the legs relative to the tabletop. The legs of the folding table of the present disclosure can be maintained at any angle between the folded state and the maximum open state by adjusting and fixing the length of the stays. Therefore, it is also possible to install the tabletop so that it leans against the tabletop at any angle.
[0008] Furthermore, in the above folding table, it is desirable that the stay comprises an outer member formed in a hollow rod shape with one end rotatably connected to one of the tabletop or leg portions, an inner member formed in a rod shape that is slidably inserted into the outer member with one end rotatably connected to the other of the tabletop or leg portions, and a locking member provided on the other end side of the outer member and capable of fixing the inner member at any position.
[0009] With the above configuration, both ends of the stay can rotate freely according to the degree to which the legs are opened, while the locking member can fix the inner member, which is movable in and out of the outer member, at any position. This makes it possible to appropriately fix the position of the legs with the stay depending on the condition of the installation surface of the folding table, reducing rattling.
[0010] Furthermore, in the above folding table, it is desirable that the legs comprise an upper leg member formed in a hollow rod shape and one end of which is rotatably connected to the tabletop, a lower leg member formed in a rod shape that is slidably inserted into the inside of the upper leg member, and a leg locking member provided on the other end of the upper leg member and capable of fixing the lower leg member at any position.
[0011] With the above-mentioned configuration, the length of each leg can be freely adjusted even if the surface on which the folding table is placed is inclined.
[0012] In addition, in the above folding table, the leg locking member comprises a leg cover member that is attached so as to cover the outer periphery of the other end side of the leg upper member, and a locking flange that protrudes inwardly from the opening on the lower end side of the leg cover member, and a guide member is attached to the outer surface of the upper end of the leg lower member, and it is desirable that the width of the leg lower member including the guide member exceeds the width of the opening on the lower end side of the leg cover member.
[0013] With the above configuration, while the length of the leg is being adjusted, the guide member of the lower leg member abuts against the locking flange when the lower leg member is not fixed to the upper leg member, thereby preventing the lower leg member from falling further.
[0014] Furthermore, in the above folding table, it is desirable that the inner surface of the upper leg member be provided with a regulating rail portion which is a pair of protrusions protruding inwardly and parallel to the longitudinal direction and has a gap therebetween large enough to accommodate the width of the guide member.
[0015] With the above-mentioned configuration, the guide member slides between the regulating rails, allowing the lower leg member to slide smoothly relative to the upper leg member. In addition, when the folding table is placed on the ground, rattling between the upper and lower leg members is reduced. Effect of the Invention
[0016] Since the embodiments of the present disclosure are configured as described above, a folding table is provided in which the legs can be sufficiently fixed and wobbling can be reduced even when the table is placed on uneven ground outdoors. [Brief description of the drawings]
[0017] [Figure 1] FIG. 2 is a front view of the folding table according to the embodiment, showing a state in which the legs are opened and the table is placed on a placement surface. [Diagram 2] FIG. 2 is a front view of the folding table of FIG. 1 with its legs folded down. [Diagram 3] FIG. 2 is a top perspective view of the folding table with the legs open. [Figure 4A] 4 shows a bottom perspective view of the folding table of FIG. 3. [Figure 4B] The portion indicated by circle B in FIG. 4A is shown in an enlarged view. [Figure 4C] The portion indicated by circle C in FIG. 4A is shown in an enlarged view. [Figure 4D] The portion indicated by circle D in FIG. 4A is shown in an enlarged view. [Diagram 5] FIG. [Figure 6] 1 is a perspective view showing a state in which the lock member is disassembled. FIG. [Figure 7A] The stay in an unfixed state is shown in a cross-sectional view taken along the axis. [Figure 7B] The stay in the fixed state is shown in a cross-sectional view taken along the axis. [Figure 7C] The portion indicated by circle C in FIG. 7B is shown in an enlarged view. [Figure 8A] FIG. 2 is a partial front view showing the legs in an extended state. [Figure 8B] FIG. 2 is a partial front view showing the legs in a retracted state. [Figure 9] 1 is a perspective view of an upper end portion of a lower leg member. [Figure 10A] The upper leg member is shown in a cross-sectional view perpendicular to the axis. [Figure 10B] 1 is a cross-sectional view perpendicular to the axis showing a state in which the lower leg member is housed in the upper leg member; [Figure 11] FIG. 4 is a perspective view showing a leg locking member in an exploded state. [Figure 12A] The legs in an unlocked state are shown in cross section along the axis. [Figure 12B] The leg in the fixed state is shown in a cross-sectional view taken along the axis. [Figure 13]1 shows a top view of the leg locking member with the upper and lower leg members inserted therethrough, where the upper and lower leg members are shown in cross section, and the leg pressing member and leg pressing operation member are omitted. [Figure 14] FIG. 2 shows a top perspective view of the folding table with the legs folded. [Figure 15A] 15 shows a bottom perspective view of the folding table of FIG. 14. [Figure 15B] The portion indicated by circle B in FIG. 15A is shown in an enlarged view. [Figure 16A] 13 is a top perspective view showing another installation method of the folding table of the embodiment. FIG. [Figure 16B] The portion indicated by circle B in FIG. 16A is shown in an enlarged view. [Figure 16C] The portion indicated by circle C in FIG. 16A is shown in an enlarged view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] An embodiment of the folding table 1 of the present disclosure will be described with reference to the drawings. In the following description, when "upper side" and "lower side" are mentioned, the up-down direction is defined based on the installed state. Furthermore, the reference numerals commonly used in each drawing indicate the same parts or components even if they are not mentioned in the description of each drawing. Furthermore, the materials of each component mentioned below are examples and are not limited to these.
[0019] FIG. 1 is a front view of the folding table 1 of this embodiment, in which the legs 20 are opened and extended, and the table is placed on the installation surface indicated by the two-dot chain line in the figure. The legs 20 are foldable and support the underside of the tabletop 10. A stay 30 is provided between the tabletop 10 and the legs 20. One end of the stay 30 is connected to the underside of the tabletop 10, and the other end of the stay 30 is connected to the legs 20. The stay 30 is expandable and contractable with the opening and closing of the legs, and can be fixed at any length. In the state of FIG. 1, the stay 30 is fixed in an extended state. From the state of FIG. 1, when the legs 20 are shortened and closed while the stay 30 is shortened, the legs 20 are folded and stored as shown in FIG. 2.
[0020] 3 is a top perspective view of the folding table 1 with the legs 20 open. The table top 10 has a shape in which a generally rectangular top surface 11 is surrounded by narrow side edges 12. The legs 20 are provided on the underside of the short sides of the table top 10. Each leg 20 has two legs 21.
[0021] FIG. 4A shows the folding table 1 of FIG. 3 in a bottom perspective view. Also, FIG. 4B, FIG. 4C, and FIG. 4D are enlarged views of the portions shown in circles B, C, and D, respectively. On the back surface of the tabletop 10, three metal frames are provided to connect the inner surfaces of the side edges 12 on the long side, one of which is the central support frame 13, and the other two near the short sides are the edge support frames 14. Two wide leg connection frames 15 are connected in parallel between both ends of the central support frame 13 and one edge support frame 14. Also, two narrow leg connection frames 16 are connected in parallel between the other edge support frame 14 and positions slightly closer to the center from both ends of the central support frame 13. The wide leg connection frames 15 and the narrow leg connection frames 16 are also made of metal.
[0022] The two legs 20 have two legs 21 with different intervals. The wider leg 20A is the wider leg, and the narrower leg 20B is the narrower leg. The two legs 21 of the legs 20 are connected by two horizontal cross members 22. Each of the four legs 21 includes an upper leg member 24 formed in a hollow rod shape, a lower leg member 25 formed in a rod shape that is slidably inserted into the upper leg member 24, and a leg lock member 26 provided at the lower end side, which is the other end side, of the upper leg member 24 and capable of fixing the lower leg member 25 at any position. The upper leg member 24, the lower leg member 25, and the horizontal cross member 22 are all made of metal.
[0023] Each of the two legs 21 of the wide leg portion 20A is rotatably connected to the tabletop 10 at the upper end portion of the leg upper member 24 on the edge side of the wide leg connecting frame 15 via a metal hinge member 23 (see FIG. 4B). Similarly, each of the two legs 21 of the narrow leg portion 20B is rotatably connected to the tabletop 10 at the upper end portion of the leg upper member 24 on the edge side of the narrow leg connecting frame 16 via a hinge member 23. The hinge members 23 of each of the four legs 21 are covered from the outside by a synthetic resin leg cover member 17 attached to the edge support frame 14. Also, a marking tape 28 is wound around the outer periphery of the leg lower member 25 of each of the four legs 21, which indicates the length to pull out the leg lower member 25 from the leg upper member 24. Further, a tip cap 27 made of synthetic resin is attached to the lower end of each leg lower member 25.
[0024] The central support frame 13 and the upper horizontal rail members 22 of each leg 20 are connected by a stay 30. The stay 30 includes an outer member 31 formed in a hollow rod shape, an inner member 32 formed in a rod shape that is slidably inserted into the outer member 31, and a lock member 33 provided on the outer member 31 and capable of fixing the inner member 32 at any position. Both the outer member 31 and the inner member 32 are made of metal.
[0025] A lower end portion, which is one end of the outer member 31, is rotatably connected to the center portion of the cross member 22 of the leg 20 via a metal leg-side hinge 38 (see FIG. 4C). Meanwhile, an upper end portion, which is one end of the inner member 32, is rotatably connected to the center portion of the central support frame 13 of the tabletop 10 via a metal tabletop-side hinge 37 (see FIG. 4D). The locking member 33 is provided at the other end, which is the upper end portion, of the outer member 31.
[0026] 5 is a perspective view showing an exploded state of the stay 30. A leg side hinge 38 is attached to the lower end portion of the outer member 31, and a locking member 33 is attached to the open end of the upper end portion. Meanwhile, a top board side hinge 37 is attached to the upper end portion of the inner member 32, and the lower end portion is inserted into the open end of the outer member 31 to which the locking member 33 is attached.
[0027] FIG. 6 shows a perspective view of the locking member 33 in an exploded state. The locking member 33 is composed of a cover member 34 made of synthetic resin, a pressing operation member 36 made of metal, and a pressing member 35 made of a different metal. The cover member 34 has a through-hole 34C penetrating the openings at both ends, a pair of support plates 34D protruding from one surface of the outer periphery, an axial hole 34E penetrating the support plate 34D in the width direction, and a pressing hole 34F penetrating the one surface between the support plates 34D and 34D. The pressing member 35 has a shape in which two regular square pillars with different side lengths are stacked with the same center. Of the two regular square pillars, the one with the longer side length is the pressed part 35A, and the one with the shorter side length is the pressing part 35B. The pressing part 35A of the pressing member 35 is accommodated in the accommodation part 34H provided between the support plates 34D and 34D. The pressing portion 35B of the pressing member 35 is inserted into the pressing hole 34F that communicates with the storage portion 34H. The pressing operation member 36 is composed of a substantially cylindrical axial support portion 36D and an operation portion 36E that extends from a part of the side surface of the axial support portion 36D. The axial support portion 36D is provided with an axial hole 36C that is a through hole in the width direction. A cylindrical sliding pin 36B (made of a different metal from the pressing operation member 36) that is a separate member is embedded near the axial hole 36C. The operation portion 36E has a substantially plate-like structure with a non-uniform thickness, with the thickness being greatest in the middle portion. In the mountain-shaped portion where the thickness is greatest, the side surface on the side of the axial hole 36C is carved out to form an engagement groove 36A.
[0028] The state in which the outer member 31, the inner member 32, and the lock member 33 are assembled is shown in the cross-sectional view of FIG. 7A. FIG. 7A shows the state in which the outer member 31 and the inner member 32 are not fixed (unfixed state) in the stay 30 in a cross-sectional view taken along the axis. The upper end of the outer member 31 is inserted from the side (here, the "lower end side") of the cover member 34 where the pressing hole 34F (see FIG. 6) is provided. When the upper end of the outer member 31 abuts against the locking flange 34G protruding inward at the upper end side of the through portion 34C (see FIG. 6) and cannot be inserted any further, it is fixed by the blind rivet 34B. On the other hand, the lower end of the inner member 32 is inserted from the upper end side opposite to the lower end side. In addition, a fixing hole 31A is provided on the side of the outer member 31 facing the accommodation portion 34H. Then, the pressing member 36 is attached to the cover member 34 with the pressed portion 35A of the pressing member 35 housed in the housing portion 34H and the pressing portion 35B of the pressing member 35 inserted into the pressing hole 34F. That is, the shaft hole 36C of the pressing member 36 and the shaft hole 34E of the cover member 34 are aligned, and then the rotating shaft 36F is inserted and fixed. In the non-fixed state, the pressing member 35 is not pressed against the inner member 32, so that the inner member 32 can freely appear and disappear from the outer member 31. Furthermore, a locking claw 34A is provided to protrude upward between the support plates 34D on the lower end side of the cover member 34.
[0029] When the inner member 32 is pulled out by an arbitrary length from the state shown in FIG. 7A, the pressing operation member 36 is rotated rightward in the drawing, and the stay 30 is in the fixed state shown in the cross-sectional view of FIG. 7B. FIG. 7C is an enlarged view of the portion indicated by the circle C in FIG. 7B. At the moment of reaching this fixed state, the locking claw 34A of the cover member 34 fits into the locking groove 36A of the pressing operation member 36 that has rotated (see FIG. 7C), and at this time, a clicking sound is generated due to friction between the members, giving the user a feeling of operation. In this state, the vicinity of the portion where the sliding pin 36B is provided in the pivot support portion 36D of the pressing operation member 36 presses the pressure receiving portion 35A of the pressing member 35, and the pressing portion 35B presses the inner member 32 through the fixing hole 31A of the outer member 31, so that the inner member 32 is maintained in a fixed state relative to the outer member 31. The sliding pin 36B improves the sliding property when the pressing operation member 36 comes into contact with the pressing member 35.
[0030] Fig. 8A is a partial front view of the leg 21 in an extended state, and Fig. 8B is a partial front view of the leg 21 in a retracted state. The leg 21 can be freely extended and retracted between the maximum length shown in Fig. 8A and the minimum length shown in Fig. 8B up to the non-fixed state of the leg locking member 26, and the leg lower member 25 can be fixed at any length between these lengths by fixing the leg locking member 26.
[0031] 9 is a perspective view showing the upper end portion of the leg lower member 25. The leg lower member 25 is a long metal member. Its cross section is substantially rectangular, and metal guide members 25A with a U-shaped cross section are attached along the longitudinal direction to the outer surface of the upper end, in other words, to both long side surfaces, and are fixed thereto by blind rivets 25A1. In addition, a rivet avoidance groove 25B, which is a groove fitted inward, is provided on one of the sides on which the guide member 25A is not provided.
[0032] Leg upper member 24 is also a long member made of metal. Fig. 10A shows a cross section perpendicular to the axis of leg upper member 24. Leg upper member 24 has a generally rectangular cross section, and on both inner surfaces of the long sides thereof, there are provided restricting rail portions 24A, which are a pair of ridges that protrude inwardly and in parallel, spaced apart by a distance that can accommodate the width of guide member 25A.
[0033] 10B is a cross-sectional view perpendicular to the axis showing the state in which the leg lower member 25 is housed in the leg upper member 24. The guide member 25A of the leg lower member 25 is housed between the regulating rail portions 24A and can slide vertically along the regulating rail portions 24A. As shown in FIG. 10B, the leg lower member 25 has a clearance with respect to the leg upper member 24, but the guide member 25A is regulated by the regulating rail portions 24A, so that the leg lower member 25 can slide smoothly relative to the leg upper member 24. The guide member 25A may be provided on only one side, and in that case, the regulating rail portion 24A may also be provided on only the corresponding one side.
[0034] FIG. 11 shows a perspective view of the leg locking member 26 in an exploded state. The leg locking member 26 is composed of a synthetic resin leg cover member 26A, a metal leg pressing operation member 26C, and a different metal leg pressing member 26B. The leg cover member 26A has a through-hole 26A3 penetrating the openings at both ends, a pair of support plates 26A4 protruding from one surface of the outer periphery, an axial hole 26A5 penetrating the support plate 26A4 in the width direction, and a pressing hole 26A6 penetrating the one surface between the support plates 26A4 and 26A4. The leg cover member 26A is a member attached so as to cover the outer periphery of the lower end side of the leg upper member 24. The leg pressing member 26B has a shape in which two regular square columns with different side lengths are stacked with the same center. Of the two square prisms, the one with the longer side is the pressure receiving portion 26B1, and the one with the shorter side is the pressing portion 26B2. The pressure receiving portion 26B1 of the leg pressing member 26B is received in the receiving portion 26A8 provided between the support plates 26A4 and 26A4. The pressing portion 26B2 of the leg pressing member 26B is inserted into the pressing hole 26A6 communicating with the receiving portion 26A8. The leg pressing operation member 26C is composed of a substantially cylindrical pivot support portion 26C4 and an operation portion 26C5 extending from a part of the side surface of the pivot support portion 26C4. The pivot support portion 26C4 is provided with a pivot hole 26C3 which is a through hole in the width direction. A cylindrical sliding pin 26C2 (made of a different metal from the leg pressing operation member 26C) which is a separate member is embedded near the 26C3. The operation portion 26C5 has a generally plate-like structure with a non-uniform thickness, with the thickness being greatest in the middle portion. In the mountain-shaped portion where the thickness is greatest, the side surface on the side of the shaft hole 26C3 is carved out to form an engagement groove 26C1.
[0035] The assembled state of the leg upper member 24, the leg lower member 25, and the leg lock member 26 is shown in the cross-sectional view of FIG. 12A. FIG. 12A shows the state in which the leg upper member 24 and the leg lower member 25 are not fixed (unfixed state) in the leg 20 in the cross-sectional view along the axis. The lower end of the leg upper member 24 housing the leg lower member 25 is inserted from the side (herein referred to as the "upper end side") of the leg cover member 26A where the pressing hole 26A6 (see FIG. 11) is provided. When the lower end of the leg upper member 24 abuts against the locking flange 26A7 protruding inward at the lower end side of the through portion 26A3 (see FIG. 11) and cannot be inserted any further, only the leg upper member 24 is fixed to the leg cover member 26A by the blind rivet 26A2. At this time, the blind rivet 26A2 enters the rivet avoidance groove 25B (see FIG. 9), so the blind rivet 26A2 does not interfere with the leg lower member 25. Furthermore, a fixing hole 24B is provided on the side of the leg upper member 24 facing the accommodation portion 26A8. Then, with the pressed portion 26B1 of the leg pressing member 26B accommodated in the accommodation portion 26A8 and the pressing portion 26B2 of the leg pressing member 26B inserted into the pressing hole 26A6, the leg pressing operation member 26C is attached to the leg cover member 26A. That is, after aligning the shaft hole 26C3 of the leg pressing operation member 26C with the shaft hole 26A5 of the leg cover member 26A, the rotating shaft 26C6 is inserted and fixed. In the non-fixed state, leg pressing member 26B is not pressed against leg lower member 25, and leg lower member 25 is free to appear and disappear from leg upper member 24. Furthermore, a locking claw 26A1 is provided on the lower end side of leg cover member 26A between support plates 26A4 and 26A4, protruding downward.
[0036] When the leg lower member 25 is pulled out by an arbitrary length from the state shown in Fig. 12A, by rotating the leg pressing member 26C to the right in the drawing, the leg 21 enters the fixed state shown in the cross-sectional view of Fig. 12B. At the moment this fixed state is reached, the locking claw 26A1 of the leg cover member 26A fits into the locking groove 26C1 (see Fig. 12A) of the rotating leg pressing member 26C, and at this time, a clicking sound is generated by friction between the members, giving the user a feeling of operation. In this state, the vicinity of the portion where the sliding pin 26C2 is provided in the pivot support portion 26C4 of the leg pressing operation member 26C presses the pressed portion 26B1 of the leg pressing member 26B, and the pressing portion 26B2 presses the leg lower member 25 through the fixing hole 24B of the leg upper member 24, thereby maintaining the leg lower member 25 fixed to the leg upper member 24. The sliding pin 26C2 improves the sliding property when the leg pressing operation member 26C comes into contact with the leg pressing member 26B.
[0037] FIG. 13 shows the leg lock member 26 in a top view with the leg upper member 24 and the leg lower member 25 inserted therethrough. However, the leg upper member 24 and the leg lower member 25 are shown in cross section. The leg pressing member 26B and the leg pressing member 26C are omitted. The lower end of the through-hole 26A3 (see FIG. 11) of the leg cover member 26A is formed with the locking flange 26A7 protruding inward as described above. The portion of the locking flange 26A7 corresponding to the guide member 25A protrudes further inward, so that the guide member 25A abuts against the protruding portion. In other words, the width W1 of the leg lower member 25 including the guide member 25A is greater than the width of the opening on the lower end side of the leg cover member 26A, i.e., the width W2 between the edges of the locking flange 26A7. As a result, even in an unfixed state, the lower end of guide member 25A abuts against locking flange 26A7, preventing leg lower member 25 from falling off from leg lock member 26. When guide member 25A is provided on only one side, the portion of locking flange 26A7 corresponding to guide member 25A may also be provided on only the corresponding one side.
[0038] 14 is a top perspective view of the folding table 1 with the legs 20 folded up. In this figure, the top surface 11 that corresponds to the surface of the top board 10 is visible. Also, a handle 18 for carrying is provided in the center of the side edge 12 on the long side.
[0039] 15A shows a bottom perspective view of the folding table 1 with the legs 20 folded. In this figure, the underside of the tabletop 10 is visible. In this state, both of the two stays 30 are in their most contracted state. In addition, each of the pair of legs 20 is folded to a position in contact with the underside of the tabletop 10 with the leg lower member 25 housed in the leg upper member 24. In this state, the narrow leg 20B is housed between the wide leg 20A.
[0040] Here, when the legs 20 are folded, the distance from the top surface 11 of the tabletop 10 to the bottom ends of the leg cover members 17 is greater than the distance from the top surface 11 to the sides of the legs 20. Therefore, when the folding table 1 with the legs 20 folded is placed on the floor with the tabletop 10 facing up, as shown in Fig. 2, the leg cover members 17 come into contact with the installation surface indicated by the two-dot chain line in the figure, so that the legs 20 are prevented from coming into contact with the installation surface, reducing the possibility of damage to the legs 20.
[0041] Furthermore, as shown in Fig. 15B, which is an enlarged view of the portion indicated by circle B, hinge member 23 installed at the upper end of leg upper member 24 is formed in a state in which it is tilted inward by 10° when leg 20 is in a folded state. Therefore, when leg 20 is in an unfolded state, leg 20 is placed upright on the installation surface in a state in which it is tilted outward by 10° with respect to the vertical line (see Fig. 1).
[0042] When setting up the folding table 1 of this embodiment, first, from the upside-down state shown in Fig. 15A, the locking members 33 of both stays 30 are set to the unlocked state (see Fig. 7A), and then the pair of legs 20 are rotated outward until the hinge members 23 abut against the edge support frame 14. Then, the leg locking members 26 of each of the four legs 21 are set to the unlocked state (see Fig. 12A), and the leg lower members 25 are extended to set the leg locking members 26 to the locked state (see Fig. 12B) at the desired length. In this state, the table is turned over so that the legs 20 face downward, and the tips of the legs 20 come into contact with the installation surface as shown in Fig. 1.
[0043] In this state, the degree to which the legs 20 are opened can be finely adjusted according to the condition of the installation surface, and the extended state of the extended stays 30 can be adjusted until they become tension rods, and then the locking member 33 can be fixed (see FIG. 12B) to maintain the degree to which the legs 20 are opened. This reduces wobbling of the legs 20. Furthermore, not only can the length of the legs 20 be adjusted according to the application or the physique of the user, but when installing on an inclined surface, it is also possible to adjust the length of each of the four legs 21 so that the tabletop 10 is horizontal.
[0044] The legs 20 of the folding table 1 of this embodiment can be maintained at any angle between the folded state shown in FIG. 2 and the maximum open state shown in FIG. 1 by adjusting and fixing the length of the stays 30. In addition, since the length of each leg 21 can be freely adjusted, for example, it is possible to install the top plate 10 so that it stands at any angle, as shown in FIG. 16A. By using such an installation method, the top plate 10 of the folding table 1 can also be used as a standing signboard. At this time, as shown in FIG. 16B, which is an enlarged view of the part indicated by circle B in FIG. 16A, the hinge member 23 of the upper leg 20 is maintained at an angle slightly open from the folded state. On the other hand, as shown in FIG. 16C, which is an enlarged view of the part indicated by circle C in FIG. 16A, the hinge member 23 of the lower leg 20 is maintained at an angle slightly closed from the erected state. The unstable angle of the hinge member 23 as shown in FIG. 16B and FIG. 16C can be maintained by adjusting and fixing the length of the stays 30.
[0045] As described above, the folding table 1 of this embodiment can be set up with the legs 20 opened appropriately depending on the conditions of the installation surface by adjusting and fixing the length of the stays 30. In particular, since it is suitable for installation on uneven ground such as outdoors, it is suitable for use as a podium for spreading out documents such as drawings and maps at construction sites or disaster relief sites. [Explanation of symbols]
[0046] REFERENCE SIGNS LIST 1 Folding table 10 Table top 11 Top surface 12 Side edge 13 Center support frame 14 Edge support frame 15 Wide leg connecting frame 16 Narrow leg connecting frame 17 Leg cover member 18 Handle 20 Leg 20A Wide leg 20B Narrow leg 21 Leg 22 Cross bar member 23 Hinge member 24 Upper leg member 24A Regulating rail portion 24B Fixing hole 25 Lower leg member 25A Guide member 25A1 Blind rivet 25B Rivet avoidance groove 26 Leg lock member 26A Leg cover member 26A1 Locking claw 26A2 Blind rivet 26A3 Through portion 26A4 Support plate 26A5 Shaft hole 26A6 Press hole 26A7 Locking flange 26A8 Storage section 26B Leg pressing member 26B1 Pressured section 26B2 Pressing section 26C Leg pressing operation member 26C1 Locking groove 26C2 Sliding pin 26C3 Shaft hole 26C4 Shaft support section 26C5 Operation section 26C6 Rotating shaft 27 Tip cap 28 Marking tape 30 Stay 31 Outer member 31A Fixing hole 32 Inner member 33 Locking member 34 Cover member 34A Locking claw 34B Blind rivet 34C Through section 34D Support plate 34E Shaft hole 34F Pressing hole 34G Locking flange 34H Storage section 35 Pressing member 35A Pressured section 35B Pressing section 36 Pressing operation member 36A Locking groove 36B Slide pin 36C Shaft hole 36D Shaft support 36E Operation part 36F Rotation shaft 37 Top plate side hinge 38 Leg side hinge
Claims
1. The top plate and A leg portion that supports a lower surface portion of the tabletop and is foldable; a stay having one end connected to the underside of the tabletop and the other end connected to the leg, the stay being extendable and retractable in response to opening and closing of the leg and being fixable at any length; Equipped with The stay is An outer member having a hollow rod shape and one end rotatably connected to one of the top plate and the leg portion; an inner member formed in a rod shape that is slidably inserted into the outer member and has one end rotatably connected to the other of the top plate or the leg portion; a locking member provided on the other end side of the outer member and capable of fixing the inner member at an arbitrary position; Equipped with The leg portion is an upper leg member having a hollow rod shape and one end of which is rotatably connected to the top plate; a rod-shaped lower leg member that is slidably inserted into the upper leg member; a leg locking member provided on the other end of the upper leg member and capable of fixing the lower leg member at any position; Equipped with The leg locking member is a leg cover member attached to cover an outer periphery of the other end side of the leg upper member; a locking flange protruding inwardly from an opening on a lower end side of the leg cover member; In addition to providing A guide member is attached to the outer surface of the upper end of the lower leg member, A folding table, characterized in that the width of the leg lower member including the guide member is greater than the width of the opening on the lower end side of the leg cover member.
2. 2. The folding table according to claim 1, characterized in that the inner surface of the upper leg member is provided with a regulating rail portion which is a pair of protrusions which protrude inwardly and parallel to each other along the longitudinal direction and whose spacing is a distance sufficient to accommodate the width of the guide member.
3. A top plate, A leg portion that supports a lower surface portion of the tabletop and is foldable; a stay having one end connected to the underside of the tabletop and the other end connected to the leg, the stay being extendable and retractable in response to opening and closing of the leg and being fixable at any length; Equipped with The stay is An outer member having a hollow rod shape and one end rotatably connected to one of the top plate and the leg portion; an inner member formed in a rod shape that is slidably inserted into the outer member and has one end rotatably connected to the other of the top plate or the leg portion; a locking member provided on the other end side of the outer member and capable of fixing the inner member at an arbitrary position; In addition to providing The locking member is a cover member attached to cover an outer periphery of the other end side of the outer member and having a pressing hole penetrating one surface of the outer periphery; a pressing member provided on the cover member, the pressing member having a pressing portion inserted into a pressing hole of the cover member and a pressed portion formed on an outer circumferential side of the cover member relative to the pressing portion; a pressing operation member attached to the cover member by a rotating shaft and capable of pressing the pressure-receiving portion; Equipped with A folding table characterized in that the pressing operation member is operated to press the pressure-receiving portion, and the inner member is pressed by the pressing portion through a fixing hole of the outer member, thereby fixing the inner member to the outer member.
4. The top plate and A leg portion that supports a lower surface portion of the tabletop and is foldable; a stay having one end connected to the underside of the tabletop and the other end connected to the leg, the stay being extendable and retractable in response to opening and closing of the leg and being fixable at any length; Equipped with The stay is An outer member having a hollow rod shape and one end rotatably connected to one of the top plate and the leg portion; an inner member formed in a rod shape that is slidably inserted into the outer member and has one end rotatably connected to the other of the top plate or the leg portion; a locking member provided on the other end side of the outer member and capable of fixing the inner member at an arbitrary position; Equipped with The leg portion is an upper leg member having a hollow rod shape and one end of which is rotatably connected to the top plate; a rod-shaped lower leg member that is slidably inserted into the upper leg member; a leg locking member provided on the other end of the upper leg member and capable of fixing the lower leg member at any position; In addition to providing The leg locking member is a leg cover member attached to cover an outer periphery of the other end side of the leg upper member and having a pressing hole penetrating one surface of the outer periphery; a leg pressing member provided on the leg cover member, the leg cover member having a pressing portion inserted into a pressing hole of the leg cover member and a pressed portion formed on an outer circumferential side of the leg cover member relative to the pressing portion; a leg pressing operation member attached to the leg cover member by a rotating shaft and capable of pressing the pressure-receiving portion; Equipped with A folding table characterized in that the leg pressing operating member is operated to press the pressure-receiving portion, and the leg lower member is pressed by the pressing portion through a fixing hole in the leg upper member, thereby fixing the leg lower member to the leg upper member.