JP5483232B2 - Folding desk - Google Patents

Description

  The present invention relates to a folding desk, and more particularly to a folding desk that can be folded when not in use and can be easily moved by a caster, and can be divided into two when transported.

  As a conference desk used in a conference room, etc., there is a desk that can be folded in a vertical state to facilitate storage when not in use, or a desk that is folded in parallel with the top board by folding legs. It is used.

  A desk that folds the top plate vertically (see Patent Document 1) can be folded more easily than a desk that folds the legs when folded, and it can be folded using a caster when not in use. Since a plurality of desks can be stored side by side, anyone can easily store and use them.

Japanese Patent Laid-Open No. 11-56480

  However, in a conventional tabletop folding table, the legs and other members are firmly fixed by welding or the like, and it is necessary to assemble all the members to complete the product during transportation. It had to be transported in a folded state, and sufficient space was necessary for transporting it, making handling difficult.

  In addition, when casters are used, when using a desk, the casters are generally locked by a stopper used for the casters. However, since the casters are circular or spherical, the ground contact area is small. There was also a problem of lack of stability.

  Therefore, the present invention solves the above-mentioned problems, can be divided into a plurality of parts during transportation, can be easily assembled after transportation, is stable during use, and easily moved by a caster during storage. An object of the present invention is to provide a folding desk that can be made to operate.

  The folding desk according to the present invention includes a top plate that is rotatably supported by two legs between a horizontal state and a vertical state, and a horizontal beam member that connects the two legs in parallel at a predetermined interval. The leg is composed of an upper mechanism and a lower mechanism that is detachably fixed to the lower part of the upper mechanism, and the upper mechanism includes a cylindrical upper pedestal and an upper part. A pivot mechanism provided at the top of the pedestal and pivoting the arm, to which the top plate is fixed, between the horizontal direction and the vertical direction by 90 °, and the lower mechanism is removable from the upper pedestal A cylindrical lower pedestal fixed to the lower pedestal; a pedestal fixed to the lower end of the lower pedestal; a support provided to penetrate the interior of the lower pedestal; and a lower end of the support. The caster part having two casters and the upper part of the lower pedestal are provided. A head portion provided at an upper end of the support column protruding from the hole of the lid portion, and an elastic member provided between the lid portion and the head portion and applying an upward force to the head portion, The rotation mechanism includes a rotation member that fixes the arm and rotates about an axis, and a lock that locks the rotation member at a position where the arm is in a vertical direction and a position where the arm is in a horizontal direction. And a lever that releases the lock by the lock mechanism, and the head portion is pressed against a roller that rotates about a roller shaft provided on the rotating member by an elastic force received from the elastic member. Therefore, the head unit moves up and down in conjunction with the movement of the roller rotated by the rotation of the rotating member, and when the top plate is moved to a vertical state, the head unit moves downward, Ki When the caster of the star part is below the bottom surface of the pedestal and is in contact with the floor, and the top plate is in a horizontal state, the head part moves upward, and the caster of the caster part moves to the leg. It is located above the bottom surface of the base, and the bottom surface of the leg base is in contact with the floor.

  Further, it is possible to improve usability by providing a shelf that is positioned below and parallel to the top plate and that can rotate between a horizontal state and a vertical state in conjunction with the movement of the top plate.

  In addition, when the top plate is in a horizontal state, the roller is arranged so that the center of the roller is positioned at a predetermined angle lower than the horizontal direction with respect to the shaft, thereby locking when not in use. The state can be strengthened.

  The levers provided in each of the two upper mechanisms are connected to each other by a connecting member and interlocked with each other, thereby improving usability.

  The folding table according to the present invention is a folding table according to the present invention. The folding table according to the present invention has a top plate that is held by two legs so that it can be rotated 90 ° between a horizontal state and a vertical state, and the two legs at a predetermined interval. A folding desk composed of a crosspiece member connected in parallel, wherein the legs are composed of an upper mechanism and a lower mechanism that is detachably fixed to the lower part of the upper mechanism, and the upper mechanism is cylindrical An upper pedestal and a rotation mechanism that is provided on the upper part of the upper pedestal and rotates an arm to which the top plate is fixed between a horizontal direction and a vertical direction by 90 °, and the lower mechanism includes: A cylindrical lower pedestal fixed detachably to the upper pedestal, a pedestal fixed to the lower end of the lower pedestal, and a support provided to penetrate the interior of the lower pedestal, A caster portion having two casters provided at a lower end of the support column; A head portion provided at an upper end of the support column protruding from a hole of a lid portion provided at an upper portion of the base pillar, and provided between the lid portion and the head portion, and exerting an upward force on the head portion. The rotating mechanism includes a rotating member to which the arm is fixed and rotates about an axis, and a position in which the arm is in a vertical direction and a position in which the arm is in a horizontal direction. A locking mechanism for locking the rotating member, and a lever for releasing the lock by the locking mechanism, and the head portion is centered on a roller shaft provided on the rotating member by an elastic force received from the elastic member. Since the head unit is pressed against the rotating roller, the head unit moves up and down in conjunction with the movement of the roller that rotates by the rotation of the rotating member, and the head unit moves to the vertical state, But When the caster of the caster part is below the bottom surface of the footrest and is in contact with the floor, and when the top plate is in a horizontal state, the head part moves upward, Since the casters of the caster part are above the bottom surface of the pedestal and the bottom surface of the pedestal is in contact with the floor, it is possible to transport more desks at a time by dividing during transportation. In addition, stability can be improved during use.

  A space for placing luggage can be provided by providing a shelf that is positioned below and parallel to the top plate and can be rotated between a horizontal state and a vertical state in conjunction with the movement of the top plate. Will improve.

  In addition, when the top plate is in a horizontal state, the roller is arranged so that the center of the roller is positioned at a predetermined angle lower than the horizontal direction with respect to the shaft, thereby locking when not in use. It is possible to strengthen the state and prevent the casters from being inadvertently stored.

  The levers provided in each of the two upper mechanisms are connected to each other by a connecting member and interlocked so that both locks can be released by operating only one lever. Folding and setting can be performed easily.

It is a side view of the folding desk of this invention. It is a front view of the folding desk of this invention. It is a side view of the upper mechanism of the state which permeate | transmitted the inside. It is a side view of the lower mechanism of the state which permeate | transmitted the inside. It is a perspective view of an arm and a rotation member. It is a perspective view of a locking mechanism. It is a front view which shows a connection member. It is a side view of the state which permeate | transmitted the inside of the folding desk in which the rotation mechanism is rotating. It is a side view of the state which permeate | transmitted the inside of the folding desk when a top plate is a horizontal state. It is a side view of the state which permeate | transmitted the inside of the folding desk which shows the state in which the rotation mechanism is rotating. It is a side view of the state which permeate | transmitted the inside of the folding desk when a top plate is a vertical state. It is a side view of the state which permeate | transmitted the inside of the folding desk when a top plate is a horizontal state. It is a side view of the state which permeate | transmitted the inside of the folding desk when a top plate is a vertical state. It is a top view of the folding desk disassembled and made into the packing state. It is a side view of the state which permeate | transmitted the inside of the folding desk when the lock | rock of a rotation mechanism is cancelled | released in the vertical state. It is a side view of the state which permeate | transmitted the inside of the folding desk when the lock | rock of a rotation mechanism is cancelled | released in the horizontal state.

  Embodiments of the folding desk of the present invention will be described with reference to the drawings. FIG. 1 shows a side view of the folding desk 1 of the present invention, and FIG. 2 shows a front view.

  As shown in FIGS. 1 and 2, the folding desk 1 of the present invention includes a top plate 3 that is held by two legs 2 so that it can be rotated 90 ° between a horizontal state and a vertical state, and two legs. 2 and a crosspiece member 4 that connects 2 in parallel at a predetermined interval, and the top plate 3 can be folded by rotating.

  The leg 2 includes an upper mechanism 5 and a lower mechanism 6 that is detachably fixed to the lower portion of the upper mechanism 5. The upper mechanism 5 holds the top plate 3 so as to be rotatable by 90 ° at the upper part, and the lower mechanism 6 includes a caster 7 at the lower part, and the folding desk 1 is movable by the caster 7. .

  As shown in FIG. 3, the upper mechanism 5 includes a cylindrical upper leg column 8 and an arm 9 provided on the upper leg column 8 to which the top plate 3 is fixed. And a turning mechanism 10 that turns 90 degrees between the two. The rotation mechanism 10 is fixed to a shaft 11 attached to the arm 9 and rotates around the shaft 11, and the rotation member 12 is positioned at a position where the arm 9 is in a vertical direction. A lock mechanism 13 that fixes the lock mechanism 13 at a horizontal position and a lever 14 that releases the lock state of the lock mechanism 13 are provided.

  As shown in FIG. 4, the lower mechanism 6 includes a cylindrical lower pedestal 15 that is detachably fixed using the upper pedestal 8 and bolts, and a leg fixed to the lower end of the lower pedestal 15. A base 16, a support column 17 provided inside the lower pedestal 15 and movable up and down, a caster part 18 having two casters 7 provided at the lower end of the support column 17, and the lower pedestal 15 A head portion 20 provided at an upper end of the support column 17 protruding from a hole of the lid portion 19 provided at the upper portion; and provided between the lid portion 19 and the head portion 20 and facing upward with respect to the head portion 20 And an elastic member 21 for applying a force to. As the elastic member 21, here, a spring disposed so as to surround the support column 17 between the lid portion 19 and the head portion 20 is used.

  As shown in FIG. 5, the rotating member 12 has two substantially circular plate-like members arranged in parallel and connected at a predetermined interval, and the shaft 11 is inserted into a through-hole provided at the center thereof and locked. Secure with pins. Since the shaft 11 is attached to the arm 9 as described above, the rotating member 12 and the arm 9 are integrally fixed via the shaft 9 and are simultaneously rotated. Further, the substantially circular plate-shaped member of the rotating member 12 is provided with two notches 22 and 23 used when the rotating member 12 is locked. Further, the rotating member 12 is provided with a roller shaft 28 fixed to two substantially circular plate-like members, and a roller 29 that rotates about the roller shaft 28.

  As shown in FIG. 6, the lock mechanism 13 is inserted into a lock member 24 fitted into the notches 22 and 23, a fixture 25 to which the lock member 24 is fixed, and a through hole of the fixture 25. And a lever 14 that serves as a shaft, and an elastic member 26 that acts in a direction in which the locking member 24 is pressed against the rotating member 12. As shown in FIG. 6, the fixture 25 has two plate-like members arranged in parallel and connected at a predetermined interval, and the lock member 24 is fixed by the two plate-like members, and the lever 14 is attached to the plate. It is inserted into a through hole provided in the shaped member and fixed using a lock pin.

  The lever 14 is formed in an L shape, and a portion inserted into the through hole and a portion gripped by a person when releasing the lock form 90 °. The levers 14 are respectively provided in the two upper mechanisms 5, and as shown in FIG. 7, pipes 27, which are connecting members, are used for the portions where the two levers 14 protrude from the through holes. When one of the levers 14 is operated by fixing the pipe 27 to the lever 14 using a lock pin, the other lever 14 is simultaneously operated. Accordingly, the two lock mechanisms 13 can be released by operating one lever 14.

The head portion 20 is applied with an upward force from the elastic member 21, but the head portion 20 is in contact with a roller 29 provided on the rotating member 12, and the upward movement is restricted. The head unit 20 moves up and down in conjunction with the movement of the roller 29 that rotates as the rotating member 12 rotates. When the rotating member 12 rotates in the direction of arrow A shown in FIG. 8, the roller 29 also moves upward while rotating in the direction of arrow A. As a result, the head portion 20 is also moved upward by the force received from the elastic member 21 . As shown in FIG. 9, when the lock member 24 is fitted into the notch 23 and the rotation of the rotating member 12 is stopped by the lock mechanism 13, the top plate 3 is in a horizontal state, and the head portion 20 is moved upward. It will be fixed in the state moved to.

Next, when the rotating member 12 rotates in the direction of arrow B shown in FIG. 10 (the direction opposite to arrow A), the roller 29 also moves downward while rotating in the direction of arrow B. As a result, a downward force is applied to the head portion 20 by the roller 29, and the head portion 20 moves downward against the force of the elastic member 21 . As shown in FIG. 11, when the lock member 24 is fitted in the notch 22 and the rotation of the rotating member 12 is stopped by the lock mechanism 13, the top plate 3 is in a vertical state, and the head portion 20 is moved downward. It will be fixed in the state moved to.

  As the head portion 20 moves up and down as described above, both the support column 17 and the caster portion 18 move up and down, and when the head portion 20 is fixed above or below, the support column 17 and the caster portion 18 are moved. Are also fixed together. The amount by which the caster portion 18 moves up and down is 15 mm in the present embodiment. As shown in FIG. 12, when the caster portion 18 is fixed upward, the caster 7 of the caster portion 18 is moved to the leg base 16. The bottom surface of the footrest 16 is in contact with the floor 40 at a position 10 mm above the bottom surface. At this time, as described above, the top plate 3 is in a horizontal state and the folding desk 1 is in use, so that the folding desk 1 is firmly supported by the leg stand 16 and is in a stable state.

  As shown in FIG. 13, when the caster portion 18 is fixed below, the caster 7 of the caster portion 18 is 5 mm below the bottom surface of the footrest 16 and is in contact with the floor 40. At this time, since the top plate 3 is in a vertical state and the folding table 1 is folded, the folding table 1 can be easily moved by the casters 7.

  The pedestal 16 is composed of two leg portions 31 and a pedestal portion 32, the lower end of the support column 17 protrudes from the bottom surface of the pedestal portion 32, and the caster portion 32 is fixed. The caster portion 32 moves up and down below the portion 32.

  A shelf 33 for placing luggage or the like is provided in parallel below the top plate 3, and one end of the shelf 33 is rotatably fixed to the two upper pedestals 8. The arm portion 34 is used for holding. The arm portion 34 is rotatably connected to the arm 9 and the shelf 33 and is also rotatably fixed to the pedestal 8 so that the shelf 33 rotates in conjunction with the top plate 3. The shelf 33 is also in a horizontal state when the top plate 3 is in a horizontal state, and when the top plate 3 is in a vertical state, the shelf 33 is also in a vertical state and can be folded together. it can. A membrane plate 35 for concealing the foot is fixed to the upper pedestal 15.

  The usage method of the folding desk 1 of this invention is demonstrated. 3 and 4, the upper mechanism 5 and the upper mechanism 6 are separated from each other, and the top plate 3 is folded. In this disassembled state, for example, as shown in FIG. 14, it can be packed in a compact manner, so that a large amount of the folding desk 1 can be transported at one time, which is effective in reducing transportation costs and the like. There is.

  The folding desk 1 conveyed in the disassembled state as described above is assembled at a place where it is used. Assembling is performed by inserting the upper pedestal 15 into the upper pedestal 8 and fixing it with bolts. In this manner, the upper mechanism 5 and the lower mechanism 6 are fixed by attaching the two lower leg columns 15 to the upper leg column 8.

Next, a state where assembly is completed and the folding desk 1 is folded will be described. When the folding desk 1 is folded, as shown in FIG. 13, the top plate 3 and the shelf 33 are in a vertical state. At this time, as shown in FIG. 11, the elastic force by the elastic member 26 of the lock mechanism 13 acts on the lock member 24, and the lock member 24 fits into the notch 22 of the rotating member 12 of the rotating mechanism 10. Thus, the rotation of the rotation member 12 is stopped, and the rotation mechanism 10 is locked.

  At this time, since the roller 29 is fixed below, the head portion 20 is also fixed below, and the caster 7 of the caster portion 18 is 5 mm below the bottom surface of the leg base 16 and the floor 40 Is in contact with. Thereby, the folding desk 1 is freely movable and can be easily arranged at a predetermined position. In addition, when it is not preferable that the caster 7 move when stored in this state, the folding desk 1 can be fixed so that it cannot be moved in a folded state by using a stopper provided on the caster 7. is there.

  If the folding desk 1 is arrange | positioned in a predetermined position, the folding desk 1 will be made into a use state. For this purpose, first, the lever 14 is moved in the direction of the arrow C shown in FIG. 11 to release the locked state of the rotating mechanism 10. When the lever 14 is moved, as shown in FIG. 15, the fixing member 25 is rotated and the lock member 24 is separated from the notch 22, so that the rotating mechanism 10 is rotatable. As described above, since the lever 14 is connected by the pipe 27, the lock of both the rotating mechanisms 10 is released by moving one lever 14.

When the lock of the rotating mechanism 10 is released, the top 3 is moved from the vertical state to the horizontal state. Then, as shown in FIG. 8, when the arm 9 rotates, the rotating member 12 of the rotating mechanism 10 rotates, and the roller 29 also moves upward while rotating in the same direction. As a result, the head portion 20 moves upward due to the force received from the elastic member 21 , and the caster portion 18 also moves upward. The shelf 33 is also moved to the horizontal state in conjunction with the top plate 3.

When the top plate 3 is moved from the vertical state to the horizontal state and the rotating member 12 is rotating, the lock member 24 is pressed against the rotating member 12 by the elastic member 26 . When the rotating member 12 rotates and the notch 23 comes to the position of the lock member 24, the fixing member 25 is rotated by the elastic member 26 , and the lock member 24 is fitted into the notch 23. As a result, as shown in FIG. 9, the rotation mechanism 10 is locked by the lock mechanism 13. At this time, the position where the notch 23 is provided is determined so that the top plate 3 and the shelf 33 are in a horizontal state.

  When the rotation mechanism 10 is locked as described above, as shown in FIG. 12, the caster portion 18 is fixed above, and the caster 7 of the caster portion 18 is 10 mm above the bottom surface of the leg base 16. The bottom surface of the footrest 16 comes into contact with the floor 40. In this way, the folding desk 1 is in use. At this time, the caster 7 floats in the air, and not only the caster is fixed as in the prior art, but also the folding desk 1 is firmly held by the leg base 16 and maintains a more stable use state. be able to.

  When the folding desk 1 is stored, the folding desk 1 is first folded and then moved. In order to fold the folding desk 1, the lever 14 is moved in the direction of the arrow D shown in FIG. 9, and the locked state of the rotating mechanism 10 is released. When the lever 14 is moved, as shown in FIG. 16, the fixing member 25 is rotated and the lock member 24 is separated from the notch 23, so that the rotating mechanism 10 is rotatable. As described above, since the lever 14 is connected by the pipe 27, the lock of both the rotating mechanisms 10 is released by moving one lever 14.

When the lock of the rotation mechanism 10 is released, the top 3 is moved from the horizontal state to the vertical state. Then, as shown in FIG. 10, when the arm 9 rotates, the rotating member 12 of the rotating mechanism 10 rotates, and the roller 29 also moves downward while rotating in the same direction. As a result, the head portion 20 moves downward against the elastic member 21 , and the caster portion 18 also moves downward. The shelf 33 is also moved to the vertical state in conjunction with the top plate 3.

When the top plate 3 is moved from the horizontal state to the vertical state and the rotating member 12 is rotating, the lock member 24 is pressed against the rotating member 12 by the elastic member 26 . When the rotating member 12 rotates and the notch 22 comes to the position of the lock member 24, the fixing member 25 is rotated by the elastic member 26 , and the lock member 24 is fitted into the notch 22. As a result, as shown in FIG. 11, the rotation mechanism 10 is locked by the lock mechanism 13. At this time, the position where the notch 22 is provided is determined so that the top plate 3 and the shelf 33 are in a vertical state, and the notch 22 and the notch 23 form an angle of 90 ° about the axis 11. Is arranged.

  At this time, the roller 29 is not at a position perpendicular to the center of the shaft 11 but at a position rotated to the right by a predetermined angle. This is because when the roller 29 is arranged at a position perpendicular to the shaft 11 in the locked state, a force is applied to the roller 29 upward by the head portion 20. This is to prevent the rotating member 12 from rotating in the direction of the arrow A before being locked and failing to lock. Thus, when the roller 29 is arranged in this way, the rotating member 12 is prevented from rotating in the opposite direction. Can be prevented.

  When the rotating mechanism 10 is locked as described above, as shown in FIG. 13, the caster portion 18 is fixed below, and the caster 7 of the caster portion 18 is 5 mm below the bottom surface of the leg base 16. Then, it comes into contact with the floor 40. Thereby, the folding desk 1 can be moved freely and can be easily stored in a predetermined position.

  As described above, the folding desk 1 of the present invention is compact when transported, is stable in use, and is excellent in usability because the caster is automatically in use when the top plate is folded. It is convenient because it can reduce transportation costs.

DESCRIPTION OF SYMBOLS 1 Folding desk 2 Leg 3 Top plate 4 Horizontal beam member 5 Upper mechanism 6 Lower mechanism 7 Caster 8 Upper leg pillar 9 Arm 10 Rotating mechanism 11 Axis 12 Rotating member 13 Lock mechanism 14 Lever 15 Lower leg pillar 16 Leg stand 17 Post DESCRIPTION OF SYMBOLS 18 Caster part 19 Cover part 20 Head part 21 Elastic member 22 Notch 23 Notch 24 Lock member 25 Fixing tool 26 Elastic member 27 Pipe 28 Roller shaft 29 Roller 31 Leg part 32 Base part 33 Shelf 34 Arm part 35 Membrane plate 40 floor

Claims (4)

A folding desk composed of a top plate that is held by two legs so as to be able to rotate 90 ° between a horizontal state and a vertical state, and a crosspiece member that connects the two legs in parallel at a predetermined interval. Because
The leg is composed of an upper mechanism and a lower mechanism that is detachably fixed to a lower part of the upper mechanism,
The upper mechanism includes a cylindrical upper pedestal and a rotation mechanism that is provided on the upper portion of the upper pedestal and rotates the arm on which the top plate is fixed by 90 ° between a horizontal direction and a vertical direction. Prepared,
The lower mechanism is provided so as to penetrate the inside of the lower pedestal, a cylindrical lower pedestal fixed to the upper pedestal so as to be removable, a pedestal fixed to the lower end of the lower pedestal, and Provided on the lower end of the support column, a caster portion having two casters, and a head provided on the upper end of the support column protruding from a hole in a lid provided on the upper portion of the lower pedestal And an elastic member that is provided between the lid portion and the head portion and applies an upward force to the head portion,
The rotation mechanism includes a rotation member that fixes the arm and rotates about an axis, and a lock that locks the rotation member at a position where the arm is in a vertical direction and a position where the arm is in a horizontal direction. A mechanism and a lever for releasing the lock by the lock mechanism,
Since the head portion is pressed against a roller that rotates about a roller shaft provided on the rotating member by an elastic force received from the elastic member, the head portion rotates by the rotation of the rotating member. When the top plate is moved up and down in conjunction with the movement of the roller and the top plate is moved vertically, the head portion moves downward, and the casters of the caster portion are located below the bottom surface of the footrest and the floor. When the top plate is in a horizontal state, the head portion moves upward, the casters of the caster portion are above the bottom surface of the leg base, and the bottom surface of the leg base is A folding desk characterized by being in contact with the floor.   The shelf according to claim 1, further comprising a shelf that is positioned in parallel with the top plate and capable of rotating between a horizontal state and a vertical state in conjunction with movement of the top plate. Folding desk. The roller, when the top plate is in a vertical state, said than perpendicular with respect to the center of the roller is the axis, around the axis, to a position rotated by a predetermined angle on the side opposite to the top plate It is arrange | positioned, The folding desk of Claim 1 or 2 characterized by the above-mentioned.
  The folding lever according to any one of claims 1 to 3, wherein the levers provided in each of the two upper mechanisms are connected to each other by a connecting member and interlocked with each other.