Scaffolding platform

Abstract

To enable a connection plate to be connected to an adjacent ceiling plate while preventing rotation of the connection plate.SOLUTION: The scaffolding platform is provided with a connector 25 that connects with a second diagonal part S2 of a ceiling plate 3 that is in close contact with a first diagonal part S1 of the ceiling board 3. The connector 25 includes a pivot shaft 26 provided at the first diagonal portion S1, a connection plate 27 horizontally rotatably supported on this pivot shaft, and a vertical engaging portion 28 and a horizontal engaging portion 29 provided on this connection plate at positions equally distanced from the pivot shaft. The connection plate is formed to be repositionable from a retracted position R1 where both the vertical engaging portion and the horizontal engaging portion overlap the first diagonal part to a connection position R2 where one of the vertical engaging portion or the horizontal engaging portion protrudes outward from the first diagonal part. A connecting locking portion 33 that is engaged by the vertical engaging portion or the horizontal engaging portion protruding outward from the first diagonal part when the connection plate is located at the connection position is formed at the second diagonal part that is adjacent to the first diagonal part when two ceiling plates are arranged adjacent to each other in the vertical or horizontal direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a scaffolding platform used as a workbench for construction work on indoor ceilings and the like.

Background Art

[0002] The conventional scaffolding platform described in Patent Document 1 includes a ceiling board, a pair of support frames whose upper parts are foldably connected to the lower surface of the ceiling board, a rotation restrictor installed between the lower surface of the ceiling board and the middle part in the vertical direction of each support frame to change the support frames from the folded posture to the standing posture and hold them in the standing posture, and a connector for connecting adjacent ceiling boards.

[0003] The connector has connection holes formed at the four corners of the ceiling board and a connecting member that is substantially U-shaped in a front view and has pin portions inserted into two connection holes. By inserting one pin portion of the connecting member into the connection hole of one ceiling board and the other pin portion of the connecting member into the connection hole of the adjacent ceiling board, the two ceiling boards can be connected so as not to separate from the adjacent arrangement.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the above prior art, by inserting the two pin portions of the connecting member into the respective connecting holes of the two ceiling boards, the two ceiling boards can be connected in an adjacent arrangement state. However, since only one pin portion of the connecting member is engaged with each ceiling board, the connecting member is allowed to rotate with respect to each ceiling board. There are manufacturing errors between the two ceiling boards even when they are arranged adjacent to each other, and the ceiling boards may shift along the contact surface, making it difficult to stabilize the adjacent arrangement of a plurality of scaffolding platforms.

[0006] The present invention aims to provide a scaffolding platform that can solve the problems of the conventional technology described above.

[0007] The present invention aims to provide a scaffolding platform that allows connection to adjacent top plates while preventing the rotation of the connecting plate, by providing a vertical engaging portion and a horizontal engaging portion on the connecting plate at positions equal in distance from the pivot axis, and allowing one of the vertical engaging portion and the horizontal engaging portion to protrude while leaving one on the top plate, and engaging with the connecting locking portion of the adjacent top plate. [Means for solving the problem]

[0008] A specific means for solving the problem in the present invention is a scaffolding platform comprising a top board 3 and a pair of support frames 4 whose upper parts are foldably connected to the lower surface of the top board 3, wherein the vertical or horizontal side of the top board 3 is formed in a shape that closely contacts the vertical or horizontal side of an adjacent top board 3, and a pair of first diagonal portions S1 and a pair of second diagonal portions S2 intersecting the diagonal direction thereto are formed, and the first diagonal portion S1 of the top board 3 is provided with a connecting device 25 that connects to the closely connected second diagonal portion S2 of the top board 3, and the connecting device 25 comprises a pivot shaft 26 provided on the first diagonal portion S1, a connecting plate 27 pivotally supported on the pivot shaft 26 so as to be horizontally rotatable, and the connecting plate 27 The connecting plate 27 has a vertical engaging portion 28 and a horizontal engaging portion 29 provided at positions equal to the distance from the pivot shaft 26, and the connecting plate 27 is formed to be repositionable from a retracted position R1 in which both the vertical engaging portion 28 and the horizontal engaging portion 29 overlap with the first diagonal portion S1, to a connecting position R2 in which one of the vertical engaging portion 28 or the horizontal engaging portion 29 protrudes outward from the first diagonal portion S1, and the second diagonal portion S2, which is adjacent to the first diagonal portion S1 when the two top plates 3 are arranged adjacent to each other in the vertical or horizontal direction, has a connecting locking portion 33 formed therein in which the vertical engaging portion 28 or the horizontal engaging portion 29 that protrudes outward from the first diagonal portion S1 engages when the connecting plate 27 is in the connecting position R2. [Effects of the Invention]

[0009] According to the present invention, the connecting plate can be connected to an adjacent top plate while preventing the rotation of the connecting plate.

[0010] In other words, the present invention allows the connecting plate 27 of the connector 25 to be connected to an adjacent top plate 3 while preventing rotation of the connecting plate 27, by leaving one of the vertical engaging portion 28 and horizontal engaging portion 29 on the top plate 3 and allowing the other to protrude and engage with the connecting locking portion 33 of the adjacent top plate 3. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing embodiments of the present invention. [Figure 2] This is a front view of the same object. [Figure 3] The same plane diagram. [Figure 4] This is a side view of the same object. [Figure 5] This is an enlarged side view of the main part. [Figure 6] This is a bottom perspective view of the folded position. [Figure 7] This is a front view of the rotation restrictor when engaged. [Figure 8] This is a cross-sectional front view of the rotation restricting device when it is detached. [Figure 9] This is a front view of the main part of the scaffolding platform. [Figure 10] This is a front view of the rotation restrictor before engagement. [Figure 11] This is an enlarged plan view of the connector. [Figure 12] This is a cross-sectional view along line XX in Figure 11. [Figure 13] This is a perspective view of a pair of connecting plates. [Figure 14] This is a plan view of the main components of the scaffolding platform, arranged adjacently in the vertical direction. [Figure 15] This is a perspective view showing scaffolding platforms arranged adjacently in the vertical direction. [Figure 16] This is a plan view of the main components of the scaffolding platform, arranged adjacently in the lateral direction. [Figure 17] This is a perspective view showing scaffolding platforms arranged side-by-side. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0013] In FIGS. 1, 2, 4, and 5, a single scaffolding base 1 in a standing posture Q is shown, and in FIGS. 3 and 6, the scaffolding base 1 in a folded posture P is shown.

[0014] The scaffolding base 1 is roughly classified into a top plate 3, a pair of support frames 4 whose upper parts are foldably connected to the lower surface of the top plate 3, a rotation restricting tool 5 that is detachably installed between the lower surface of the top plate 3 and the middle part in the vertical direction of each support frame 4, and a connector 25 arranged at a set of first diagonal parts S1 on the surface of the top plate 3.

[0015] The top plate 3 is assembled by arranging a plurality of long aluminum mold plates 3a in parallel, covering its outer periphery with vertical frame members 3b along the longitudinal direction of the mold plate 3a and horizontal frame members 3c in the orthogonal direction, and connecting the corners where the vertical frame members 3b and the horizontal frame members 3c intersect with corner members 3d, and is rectangular (rectangular) in plan view. A large number of drain holes 3ca are formed in the horizontal frame member 3c.

[0016] Since the top plate 3 is rectangular, a pair of vertical frame members 3b form the longitudinal long sides of the top plate 3, a pair of horizontal frame members 3c form the horizontal short sides of the top plate 3, and a set of first diagonal parts S1 and a set of second diagonal parts S2 that intersect diagonally with this are formed on the upper surface (surface).

[0017] Support brackets 14 are fixedly attached in a downward protruding manner to the lower surfaces of the four diagonal parts S (S1, S2) of the top plate 3, and the upper part of one support frame 4 is pivotally supported by two support brackets 14 located on both ends of each horizontal frame member 3c, and there are two support frames 4 forming a pair.

[0018] In addition, four pivot brackets 17 are fixedly attached to the lower surface on the central side of the top plate 3, and the base of the rotation restricting tool 5 is pivotally connected to each pivot bracket 17.

[0019] Each of the aforementioned support frames 4 comprises a pair of support legs 4A formed from a square hollow material, a horizontal bar 4B of a U-shaped cross section connecting the upper and lower intermediate parts of the pair of support legs 4A, an upper connecting rod 18 of a U-shaped cross section connecting the upper parts, a lower connecting rod 19 of a U-shaped cross section connecting the lower parts, an extendable frame body 20 with caster wheels 16, a rotating locking device 21 located on the upper connecting rod 18, and an extendable locking device 22 located on the lower connecting rod 19.

[0020] The upper part of the support leg 4A is connected to the support bracket 14 via a horizontal axis 15, and is foldable and rotatable from an upright position Q extending downward from the support bracket 14 to a folded position P along the lower surface of the top plate 3. The support bracket 14 is provided with a stopper 14a for setting the support leg 4A to the upright position Q.

[0021] The height of the horizontal axis 15 of one support frame 4 and the other support frame 4 are offset vertically by the width dimension of the support leg 4A, so that in the folded position P, the other support frame 4 is parallel to and overlaps the other support frame 4.

[0022] The rotating locking device 21 is housed inside the upper connecting rod 18 and has a pair of locking rods 21a whose tips extend and retract from both ends of the upper connecting rod 18, and a spring 21b that biases the locking rods 21a in the protruding direction. The protruding tip of each locking rod 21a can pass through the support bracket 14 and the support leg 4A, and its base is bent to form a finger rest 21c.

[0023] The rotation locking device 21 holds the standing position Q of the support frame 4 by passing the tip of the locking rod 21a through the support bracket 14 and the support leg 4A in the standing position Q, and allows rotation to change the position of the support frame 4 from the standing position Q to the folded position P by pulling the tip of the locking rod 21a out of the support bracket 14 via the finger grip portion 21c.

[0024] As shown in Figure 4, the telescopic frame 20 has a base material 37 with caster wheels 16 attached to its lower side, and insert members 38 erected at both ends of the base material 37. This pair of insert members 38 is retractably inserted into the lower part of the support legs 4A, and the height from the caster wheels 16 to the top plate 3 can be adjusted by adjusting the amount of extension or retraction of these insert members 38 (the amount they protrude downward from the support legs 4A).

[0025] The telescopic locking device 22 positioned on the lower connecting rod 19 has a similar configuration to the rotating locking device 21, and is housed inside the lower connecting rod 19. It comprises a pair of locking rods 22a whose tips extend and retract from both ends of the lower connecting rod 19, and a spring 22b that biases the locking rods 22a in the protruding direction. The protruding tip of each locking rod 22a is capable of passing through the support leg 4A and the insertion material 38 of the telescopic frame 20, and its base is bent to form a finger rest 22c.

[0026] The insert material 38 has multiple holes formed in the longitudinal direction through which the locking rod 22a passes. By selecting one of these holes and passing the locking rod 22a through it, the amount of extension or retraction of the telescopic frame 20 can be changed. The telescopic frame 20 shown by the dashed line in Figure 4 is in a state where it protrudes downward from the support leg 4A, raising the top plate 3 to a higher position.

[0027] Each support frame 4 is provided with a pair of hook engagement parts 6 on the horizontal bar 4B at the upper and lower intermediate points. Each of these hook engagement parts 6 is constructed by fixing a plate material to both ends of a short round pipe and then fixing this plate material to the horizontal bar 4B.

[0028] The pair of hook engagement parts 6 on one support frame 4 and the pair of hook engagement parts 6 on the other support frame 4 are offset in the longitudinal direction of the horizontal bar 4B, and four pivot brackets 17 on the lower surface of the top plate 3 are also arranged corresponding to each hook engagement part 6.

[0029] As a result, when both support frames 4 are folded to the folded position P, and the four rotation restrictors 5 are positioned along the underside of the top plate 3, the opposing rotation restrictors 5 are stored side by side without interfering with each other, as shown in Figure 3.

[0030] In Figures 1 to 10, the rotation restricting device 5 includes a connecting member 8 whose base is pivotally supported on the lower surface of the top plate 3, a hook member 9 that engages with the hook engagement portion 6 at the tip of the connecting member 8, a locking member 10 that restricts the hook member 9 from coming out of the state in which it is engaged with the hook engagement portion 6, and a protective member 11 that is fitted to the connecting member 8 so as to be longitudinally slidable and can be repositioned from a position that covers the locking member 10 to a position that exposes it.

[0031] The connecting member 8 is made of pipe material (square pipe material), its base is pivotally supported on the pivot bracket 17 on the lower surface of the top plate 3 so as to be rotatable, and the attachment part 9a of the hook member 9 is inserted and fixed to its tip.

[0032] The hook member 9 has an arc-shaped hook portion 9b protruding from a mounting portion 9a inserted and fixed to the tip of the connecting member 8, and the hook portion 9b engages with the short round pipe of the hook engagement portion 6. The locking member 10 is inserted into the mounting portion 9a so as to be able to move in and out.

[0033] The locking member 10 has a substantially arc shape when viewed from the side, is inserted into an arc-shaped hole 9c formed in the mounting portion 9a, and is biased in the protruding direction by the biasing member 9d. The portion of the locking member 10 that protrudes from the arc-shaped hole 9c protrudes in front of the recess of the hook portion 9b, preventing (locking) the short round pipe of the hook engaging portion 6, which is engaged with the recess of the hook portion 9b, from coming out of the recess. The locking member 10 is unlocked by pushing the locking member 10 into the arc-shaped hole 9c against the biasing member 9d.

[0034] The locking member 10 may be formed in a straight line shape when viewed from the side, and the hole 9c of the mounting portion 9a may also be formed in a straight line shape.

[0035] The protective member 11 has a U-shaped fitting portion 11a that slidably fits into three surfaces of the connecting member 8, which is made of a square pipe material, and a covering portion 11b that protrudes from the fitting portion 11a and covers the locking member 10 and the hook portion 9b.

[0036] The covering portion 11b of this protective member 11 covers the locking member 10, the hook portion 9b, and the hook engagement portion 6, etc., thereby preventing mud, dust, etc. from entering them.

[0037] Furthermore, since the cover portion 11b covers the locking member 10, the engagement portion between the hook portion 9b and the hook engagement portion 6, etc., when the locking member 10 is pushed away for some reason, for example, by pressure from the hook engagement portion 6, it can prevent the hook engagement portion 6 from detaching from the hook portion 9b, and also plays an auxiliary role in locking the engagement between the hook engagement portion 6 and the hook portion 9b.

[0038] The fitting portion 11a, which has a U-shaped cross-section, has its central part resting on the outer surface of the connecting member 8, and its left and right sides are along the left and right sides of the connecting member 8. Elongated holes 11c are formed in these left and right sides, and the elongated holes 11c are fitted into two guide pins 51 provided on the left and right sides of the connecting member 8.

[0039] Two guide pins 51 provided on the left and right sides of the connecting member 8 are arranged parallel to the longitudinal direction of the connecting member 8, and the protective member 11 can slide in the longitudinal direction of the connecting member 8 within the range of the elongated hole 11c, and the two guide pins 51 prevent the protective member 11 from detaching from the connecting member 8.

[0040] The sliding of the protective member 11 can be done manually, but it can also be done by its own weight. When the support frame 4 shown in Figures 1-5 is in the upright position Q, the protective member 11 is lowered by its own weight, and the flat plate-shaped cover portion 11b is in a position to cover the locking member 10 and the hook portion 9b.

[0041] The cover portion 11b is moved away from the position where it covers the locking member 10 and the hook portion 9b by manually lifting the protective member 11. Once the cover portion 11b is moved away, the locking member 10 can be pushed into the arc-shaped hole 9c, thereby detaching the locking member 10 from the hook engagement portion 6.

[0042] The above operation is performed when the support frame 4 is in an upright position Q. When changing the position of the support frame 4 to a folded position P, the scaffolding platform 1 is transported and stored, so the scaffolding platform 1 is often inverted upside down to change the position of the support frame 4.

[0043] Figures 6 and 10 show the scaffolding platform 1 inverted vertically. When the support frame 4 and the rotation restricting device 5 are inverted vertically, the protective member 11 descends under its own weight, causing the cover portion 11b to shift downward from its position covering the locking member 10 and the hook portion 9b, and change position to expose the locking member 10. This makes it easier to push in the locking member 10, and from this position, the locking member 10 can be pushed in, and the hook member 9 can be released from the hook engagement portion 6.

[0044] When the hook member 9 is released from the hook engagement part 6, the rotation restrictor 5 rotates to align with the underside of the top plate 3, and the support frame 4 also rotates around the horizontal axis 15 to change its position to a folded position P that aligns with the underside of the top plate 3.

[0045] Furthermore, if the scaffolding platform 1 is stored outdoors with its upside down and the support frame 4 folded, rain may fall on the underside of the top board 3. However, the numerous drainage holes 3ca formed in the horizontal frame members 3c allow for drainage, preventing rainwater from accumulating.

[0046] When changing the scaffolding platform 1 from the folded position P in Figure 6 to the standing position Q, the top plate 3 is inverted upside down, the support frame 4 is rotated around the horizontal axis 15 to bring the support legs 4A into contact with the stopper 14a, the rotation restrictor 5 is rotated to rise from the underside of the top plate 3, the protective member 11 remains lowered by its own weight, the hook member 9 is engaged with the hook engagement part 6, and the engagement is locked with the locking member 10. When the scaffolding platform 1 is lifted and inverted upside down in this state, the support frame 4 will be in the standing position Q. The scaffolding platform 1 is formed, and the protective member 11 descends under its own weight, so that the covering portion 11b is in a position to cover the locking member 10 and the hook portion 9b.

[0047] Multiple scaffolding platforms 1 can be placed adjacent to each other in a standing position Q. These can be arranged in two ways: vertically adjacent (as shown in Figures 14 and 15), where horizontal frame members 3c are facing each other and rectangular top boards 3 are placed adjacent along the longitudinal direction; and horizontally adjacent (as shown in Figures 16 and 17), where vertical frame members 3b are facing each other and rectangular top boards 3 are placed adjacent in a direction perpendicular to the longitudinal direction. Connecting devices 25 are used to link the top boards 3 together in these adjacent arrangements.

[0048] In Figures 1 and 3, the top plate 3 is a rectangle in which the vertical sides are longer than the horizontal sides, and support frames 4 are arranged near each horizontal side. The vertical or horizontal sides of the top plate 3 are formed to be in close contact with the vertical or horizontal sides of an adjacent top plate 3. As a result, the surface of the top plate 3 has one pair of first diagonal portions S1 and one pair of second diagonal portions S2 that intersect the diagonal direction with them. When two top plates 3 are placed adjacent to each other, the second diagonal portions S2 of the other top plate 3 are adjacent to the first diagonal portions S1 of one top plate 3.

[0049] In Figures 1, 3, 11, 14, and 16, the connector 25 has a pivot shaft 26 provided at the first diagonal portion S1 of one top plate 3, a connecting plate 27 pivotally supported on the pivot shaft 26 so as to be horizontally rotatable, and a vertical engaging portion 28 and a horizontal engaging portion 29 provided on the connecting plate 27 at a position equal to the distance from the pivot shaft 26. The vertical engaging portion 28 and the horizontal engaging portion 29 are arranged in an equilateral triangle or isosceles triangle with respect to the pivot shaft 26.

[0050] The connecting plate 27 is formed to be repositionable from a retracted position R1 in which both the vertical engaging portion 28 and the horizontal engaging portion 29 overlap the first diagonal portion S1, to a connecting position R2 in which one of the vertical engaging portion 28 or the horizontal engaging portion 29 protrudes outward from the first diagonal portion S1.

[0051] The connecting plate 27 is formed in a roughly triangular shape in plan view, with a fitting hole 27a formed at the first apex for fitting onto the pivot shaft 26, a pin protruding downward from the lower surface of the second apex to form a vertical engaging portion 28, and a pin protruding downward from the lower surface of the third apex to form a horizontal engaging portion 29. Furthermore, a finger rest portion 27b is formed between the second apex and the third apex, between the plate and the surface of the top plate 3 for inserting a finger.

[0052] The first diagonal portion S1 has a first locking portion 34 and a second locking portion 35 formed therein, which engage with the vertical engaging portion 28 and the horizontal engaging portion 29 when the connecting plate 27 is in the retracted position R1. In addition, a connecting locking portion 33 is formed at the second diagonal portion S2 of the other top plate 3.

[0053] The pivot shaft 26 is supported on the top plate 3 so as to be vertically movable, and a biasing member 40 is provided to bias the pivot shaft 26 downward in order to bring the connecting plate 27 close to (in close contact with) the surface of the top plate 3, and the vertical engaging portion 28 and horizontal engaging portion 29 of the connecting plate 27 can engage with and disengage from the first locking portion 34 and the second locking portion 35.

[0054] The connecting locking portion 33 is formed in the second diagonal portion S2, which is adjacent to the first diagonal portion S1 when the two top plates 3 are arranged adjacent to each other in the vertical (or horizontal) direction, and is in a position where the vertical engaging portion 28 (or horizontal engaging portion 29) protruding outward from the first diagonal portion S1 can engage when the connecting plate 27 is in the connecting position R2.

[0055] The first locking portion 34 and the second locking portion 35 are through holes that can prevent the outward movement of the vertical engaging portion 28 and the horizontal engaging portion 29 for the purpose of holding the connecting plate 27 in the retracted position R1, and may be walls that can prevent the outward movement of the vertical engaging portion 28 or the horizontal engaging portion 29 for the purpose of holding the connecting plate 27 in the connecting position R2.

[0056] The connecting locking portion 33 is a through hole, and the vertical engaging portion 28 (or horizontal engaging portion 29) engages when the connecting plate 27 is in the connecting position R2. It is preferable that the connecting locking portion 33 is a through hole that does not move much relative to the vertical engaging portion 28 (or horizontal engaging portion 29).

[0057] The solid line in Figure 11 shows the state in which the connecting plate 27 at the first diagonal portion S1 is held in the retracted position R1. From this state, a finger is placed on the finger rest portion 27b and the connecting plate 27 is pulled up against the biasing member 40, causing the vertical engaging portion 28 and the horizontal engaging portion 29 to be released upward from the first locking portion 34 and the second locking portion 35, and to be rotated in one direction around the pivot shaft 26.

[0058] If the scaffolding platforms 1 are arranged adjacent to each other in the vertical direction, as shown in Figures 11, 14, and 15, the connecting plate 27 is rotated 90 degrees clockwise to the connecting position R2, the vertical engaging portion 28 is aligned with the second locking portion 35, the horizontal engaging portion 29 is aligned with the connecting locking portion 33, and then the two are engaged.

[0059] As a result, the triangular connecting plate 27 is securely held on the top plate 3 by the pivot shaft 26 and the vertical engaging portion 28, and is connected to the vertically adjacent scaffolding platform 1 with minimal play by the horizontal engaging portion 29 and the connecting locking portion 33.

[0060] Furthermore, if the scaffolding platforms 1 are arranged adjacent to each other in the horizontal direction, as shown in Figures 11, 16, and 17, the connecting plate 27 is rotated 90 degrees counterclockwise to the connecting position R2, the horizontal engaging portion 29 is aligned with the first locking portion 34, the vertical engaging portion 28 is aligned with the connecting locking portion 33, and then the two are engaged.

[0061] As a result, the triangular connecting plate 27 is securely held on the top plate 3 by the pivot shaft 26 and the lateral engaging portion 29, and is connected to the laterally adjacent scaffolding platform 1 with minimal play by the vertical engaging portion 28 and the connecting locking portion 33.

[0062] The adjacent connection of the two scaffolding platforms 1 is performed using a total of two sets of connectors 25: one set on one of the adjacent top boards 3 and another set on the other top board 3. This results in a strong connection with minimal relative displacement between the two scaffolding platforms 1.

[0063] In the embodiment described above, the scaffolding platform comprises a top board 3, a pair of support frames 4 whose upper parts are foldably connected to the lower surface of the top board 3, and a rotation restricting device 5 installed between the lower surface of the top board 3 and the vertically intermediate portion of each support frame 4 to change the support frames 4 from a folded position P to an upright position Q and hold them in the upright position Q, wherein the vertical or horizontal side of the top board 3 is formed in a shape that closely contacts the vertical or horizontal side of an adjacent top board 3, and a pair of first diagonal portions S1 and a pair of second diagonal portions S2 intersecting the diagonal direction thereto are formed, and the first diagonal portion S1 of the top board 3 is provided with a connecting device 25 that connects to the closely connected second diagonal portion S2 of the top board 3, and the connecting device 25 is connected to a pivot shaft 26 provided on the first diagonal portion S1 and The connecting plate 27 is pivotally supported on the pivot shaft 26 so as to be able to rotate horizontally, and the connecting plate 27 has a vertical engaging portion 28 and a horizontal engaging portion 29 provided on the connecting plate 27 at a position equal to the distance from the pivot shaft 26. The connecting plate 27 is formed to be repositionable from a retracted position R1 in which both the vertical engaging portion 28 and the horizontal engaging portion 29 overlap with the first diagonal portion S1, to a connecting position R2 in which one of the vertical engaging portion 28 or the horizontal engaging portion 29 protrudes outward from the first diagonal portion S1. When the two top plates 3 are arranged adjacent to each other in the vertical or horizontal direction, the second diagonal portion S2 adjacent to the first diagonal portion S1 has a connecting locking portion 33 formed therein, into which the vertical engaging portion 28 or the horizontal engaging portion 29 protruding outward from the first diagonal portion S1 engages when the connecting plate 27 is in the connecting position R2.

[0064] With this configuration, the connecting plate 27 of the connector 25 can be connected to an adjacent top plate 3 while preventing rotation of the connecting plate 27 on one top plate 3, by leaving one of the vertical engaging portion 28 and horizontal engaging portion 29 on the top plate 3 and allowing the other to protrude and engage with the connecting locking portion 33 of the adjacent top plate 3.

[0065] Furthermore, in the above embodiment, The top plate 3 is a rectangle in which the vertical sides are longer than the horizontal sides, and support frames 4 are arranged near each horizontal side, so that the vertical engaging portion 28 or the horizontal engaging portion 29 can engage with and disengage from the connecting locking portion 33. The pivot shaft 26 is supported on the top plate 3 so as to be able to move up and down, and a biasing member 40 is provided to bring the connecting plate 27 closer to the surface of the top plate 3.

[0066] This configuration allows the connecting plate 27 to be placed in close contact with the upper surface of the top plate 3.

[0067] Furthermore, in the above embodiment, the connecting plate 27 is formed in a substantially triangular shape in plan view, with a fitting hole 41 formed at the first apex for fitting onto the pivot shaft 26, a pin protruding downward from the lower surface of the second apex for forming a vertical engaging portion 28, and a pin protruding downward from the lower surface of the third apex for forming a horizontal engaging portion 29. Between the second apex and the third apex, a finger rest portion 27b is formed between the apex and the surface of the top plate 3 for inserting a finger.

[0068] This configuration allows for easy formation of the connector 25 and facilitates operations such as lifting or rotating the connecting plate 27 to change its position.

[0069] Furthermore, in the above embodiment, the first diagonal portion S1 is formed with a first locking portion 34 and a second locking portion 35, which engage with the vertical engaging portion 28 and the horizontal engaging portion 29 when the connecting plate 27 is in the retracted position R1.

[0070] This configuration allows the connecting plate 27 to be stably positioned in a state where rotation is prevented.

[0071] It should be noted that the present invention is not limited to the embodiments described above, and the shape, configuration, and combination of the components can also be changed.

[0072] For example, the connecting plate 27 of the connector 25 may be a polygon other than a triangle, and it is sufficient that a vertical engaging portion 28 and a horizontal engaging portion 29 are provided at positions equidistant from the pivot shaft 26, and that a connecting locking portion 33 is also provided.

[0073] The connector 25 is designed so that it does not protrude significantly from the upper surface of the top plate 3, with the connecting plate 27 closely fitting to the upper surface of the top plate 3 and the finger rest portion 27b also being formed low. However, a gripping portion for grasping with the index finger may be provided on the upper surface of the connecting plate 27 or the upper end of the pivot shaft 26. [Explanation of Symbols]

[0074] 1. Scaffolding platform 3 Top board 4. Support frame 4A Support leg 4B horizontal bar 5 Rotation Restrictor 6 Hook engagement part 8. Connecting materials 9 Hook member 9a Mounting part 9b Hook section 10 Locking member 11 Protective member 11a Mating part 11b Cover 11c long hole 14. Support bracket 15 Horizontal axis 16 caster wheels 17 Pivot bracket 18 Upper connecting rod 19 Lower connecting rod 20 Extendable frame 21 Rotating locking mechanism 22 Telescopic locking mechanism 23 Horizontal axis 25 Connectors 26 Pivot axis 27 Connecting plate 27a Fitting hole 27b Finger rest 28 Vertical engagement portion 29 Lateral engagement portion 33 Connection locking part 34 First locking section 35 Second locking section 40 Biasing member 51 Guide pins P Folded position Q: Standing posture R1 Evacuation Position R2 connection position S1 First diagonal section S2 Second diagonal section

Claims

1. A scaffolding platform comprising a top board (3) and a pair of support frames (4) whose upper parts are foldably connected to the lower surface of the top board (3), The vertical or horizontal edge of the top plate (3) is formed in a shape that closely contacts the vertical or horizontal edge of an adjacent top plate (3), and a pair of first diagonal portions (S1) and a pair of second diagonal portions (S2) intersecting the diagonal direction thereto are formed. A connecting device (25) is provided at the first diagonal portion (S1) of the top plate (3) to connect with the closely adjacent second diagonal portion (S2) of the top plate (3). The connecting device (25) has a pivot shaft (26) provided at the first diagonal portion (S1), a connecting plate (27) pivotally supported on the pivot shaft (26) so as to be horizontally rotatable, and a vertical engaging portion (28) and a horizontal engaging portion (29) provided on the connecting plate (27) at positions equal to the distance from the pivot shaft (26). The connecting plate (27) is formed to be repositionable from a retracted position (R1) in which both the vertical engaging portion (28) and the horizontal engaging portion (29) overlap the first diagonal portion (S1) to a connecting position (R2) in which one of the vertical engaging portion (28) or the horizontal engaging portion (29) protrudes outward from the first diagonal portion (S1). A scaffolding platform characterized in that, when two top boards (3) are arranged adjacent to each other in the vertical or horizontal direction, a connecting locking portion (33) is formed in the second diagonal portion (S2) which is adjacent to the first diagonal portion (S1), and when the connecting plate (27) is in the connecting position (R2), a connecting locking portion (33) is formed therein, into which a vertical engaging portion (28) or a horizontal engaging portion (29) that protrudes outward from the first diagonal portion (S1) engages when the connecting plate (27) is in the connecting position (R2).

2. The top board (3) is a rectangle in which the vertical sides are longer than the horizontal sides, and support frames (4) are arranged near each horizontal side. The scaffolding platform according to claim 1, characterized in that the pivot shaft (26) is supported on the top plate (3) so as to be vertically movable in order to engage and disengage the vertical engaging portion (28) or the horizontal engaging portion (29) with the connecting locking portion (33), and a biasing member (40) is provided to bring the connecting plate (27) closer to the surface of the top plate (3).

3. The connecting plate (27) is formed in a roughly triangular shape in plan view, with a fitting hole (41) formed at the first apex for fitting onto the pivot shaft (26), a pin protruding downward from the lower surface of the second apex forming a vertical engaging portion (28), and a pin protruding downward from the lower surface of the third apex forming a horizontal engaging portion (29). The scaffolding platform according to claim 1 or 2, characterized in that a finger rest (27b) for inserting a finger is formed between the second and third top portions and the surface of the top board (3).

4. The scaffolding platform according to claim 1 or 2, characterized in that the first diagonal portion (S1) has a vertical locking portion (34) and a horizontal locking portion (35) formed therein, which engage with the vertical engaging portion (28) and the horizontal engaging portion (29) when the connecting plate (27) is in the retracted position (R1).

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