JP3742953B2 - Telescopic staircase step structure - Google Patents

Description

  The present invention relates to a step structure used for an end of a telescopic staircase seat installed in a hall, a gymnasium or the like.

  In a telescopic staircase, where a plurality of uplifted chair bases with different heights in a conventional staircase shape are connected to each other in order to increase the height and can be moved back and forth, There is a case where a landing is required when a building pillar is inserted between the telescopic staircases adjacent to each other because of the structure or when it is installed adjacent to the entrance / exit provided on the wall of the building. In such a case, a detachable crossing plate that straddles between adjacent pedestal floors is manually placed, or a crossing plate that is fixed to the end of the pedestal floor with a hinge. It was straddled between adjacent admiral floors by hand or spread horizontally before the entrance. Further, with only the horizontal plate, when the height of the stairs is high, a rectangular parallelepiped step is manually placed on the horizontal plate.

  In these cases, manual labor is required, and there are concerns about safety due to the small number of people and the work at high places. The present invention obtains a step structure for a telescopic staircase that allows these steps to be automatically extended and retracted, and the elevating step can be raised or lowered without any safety concerns. For the purpose.

  A pair of two links in which the lifting device crosses the link fulcrum shaft substantially in the shape of a pavement is disposed in parallel, and a rectangular plate-like tread is placed on the upper end of each link, and the rear end of each link Is supported by an upper fixed shaft fixed to the lower surface of the tread plate by a support material and a lower fixed shaft fixed to the upper surface of the bottom plate by a support material, and the front end of each link is connected to the lower surface of the tread plate by the upper movable shaft and the bottom plate. A lower movable shaft is provided on the upper surface so as to be slidable only in the horizontal direction, a spring is stretched between the link fulcrum shaft and a spring support fixed to the upper surface of the bottom plate, and the horizontal step of the transverse step by the drive device is extended. Each link is raised or lowered by abutment or separation with a stopper receiving material of a stopper fixed to the tip of a stopper supporting arm that is linked to the lower movable shaft that is linked to the extension or retraction. Telescopic stepped bleachers for the step structure characterized in that the capacity.

According to the present invention, there is no need for manual work, there is no safety concern, and the horizontal step can be automatically extended or retracted. Further, the telescopic staircase can be raised or lowered as required. When the building pillar material is inserted between the telescopic staircases that are adjacent to each other from the building structure, or when it is installed adjacent to the entrance / exit on the wall of the building It is useful as a step.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic explanatory view of an embodiment of a step structure for a telescopic staircase according to the present invention. (A) When storing a lateral step (b) When projecting a lateral step (c) Ascending and descending step Indicates the time. FIG. 2 is a schematic explanatory view of another embodiment of the step structure for a telescopic staircase according to the present invention. (A) At the time of storing the horizontal step (b) At the time of extending the horizontal step (c) Elevating step Indicates the rise time. FIG. 3 is a schematic explanatory view showing the operation of the embodiment of the step structure for the telescopic staircase in FIG. FIG. 4 shows (a) a plan view, (b) a front view, and (c) a side view of an embodiment of a driving device used in the step structure for a telescopic staircase according to the present invention. FIG. 5 is a schematic explanatory view showing operations (a) to (d) of one embodiment of the lifting device used in the step structure for the telescopic staircase of the present invention. FIG. 6 is a schematic explanatory view showing operations (a) to (d) of another embodiment of the lifting device used in the step structure for the telescopic staircase of the present invention.

  FIG. 1 is a schematic explanatory diagram of a step structure used when a building pillar 8 is provided between left and right telescopic staircases 1L and 1R adjacent to each other. In FIG. 1 (a), a plurality of floor-up chairs 4L, 2L with different uplifting chairs 5 in a staircase shape developed from a hangar (not shown) are connected to each other in order to increase the height. A rectangular parallelepiped step 6 is accommodated via a bracket (not shown) on the bottom surface of the floor 4L of the telescopic staircase 1L that is arranged to be movable back and forth. Between the chair 5 and the floor pedestal 4L, there is provided a cosmetic box 3L with a built-in standing and falling device. The telescopic staircase 1R indicated by the floors 4R and 2R, the decorative box 3R, etc. adjacent to the telescopic staircase 1L with the architectural pillar 8 in between is installed in parallel. Next, in FIG.1 (b), the crossing step 6 is projected in the horizontal direction X with the drive device mentioned later, and is hold | maintained in the state which partially overlaps with the bottom face of the endmost part of the floor base 4R. Further, when the height of the staircase is high, in FIG. 1C, a rectangular parallelepiped lifting step 7 is built in the front end portion of the crossing step 6, and it is lifted and lowered while the horizontal step 6 extends in the horizontal direction X. Step 7 is moved upward in the direction Y perpendicular to the upper surface of the step 6 across. After use, the telescopic staircase seat 1L is returned to the state shown in FIG. 1 (a) by the reverse operation to that described above, and then stored in a storage (not shown).

FIG. 2 is a schematic explanatory diagram of a step structure used for the telescopic staircase 1L placed adjacent to the entrance 9 provided on the wall of the building. In FIG. 2A, a building entrance 9 is installed instead of the adjacent telescopic staircase 1R in FIG. 1A. Next, in FIG. 2 (b), as in FIG. 1 (b), the horizontal step 6 is projected in the horizontal direction X by the driving device, and the level of the upper surface of the horizontal step 6 is brought into contact with the bottom of the entrance 9 of the building. It is held in the state to do.
Further, when the position of the building entrance 9 is shifted, a rectangular parallelepiped elevating step 7 is incorporated in the side end of the crossing step 6 shown in FIG. The level of the upper surface of the elevating step 7 is adjusted to the bottom, and the elevating step 7 is raised in the vertical direction Y from the upper surface of the transversal step 6 while the horizontal step 6 extends in the horizontal direction X. After use, the telescopic staircase seat 1L returns to the state shown in FIG. 2 (a) by the reverse operation to that described above, and is then stored in a storage (not shown).

  With reference to FIG. 4, the transverse step 6 and the driving device 20 will be described. The crossing step 6 includes two U-shaped fixing plate brackets 27, 27 fixed to the floor 4L, and a U-shaped fixing plate 10 having a U-shaped cross section fixed horizontally by placing the rectangular bottom face upward on the horizontal plane. The slide plate 11 faces the fixed plate 10 and faces the opening downward and is horizontally placed on the upper surface. L-shaped roller support brackets 26 and 26 are spaced in the horizontal direction X at both ends of the horizontal lower surface of the slide plate 11. Are fixed at five places, and rotatable rollers 19, 19 are pivotally supported at five places on the vertical portions of the roller support brackets 26, 26. The grooves of the pair of groove guides 18 and 18 extending in the horizontal direction X with an interval between the vertical rising portions at both ends of the fixed plate 10 are fixed to be opposed to each other, and the roller is inserted into the gap between the grooves of the groove guides 18 and 18. 19 and 19 are inserted and slidable in the horizontal directions X and Z. The drive device 20 is a screw in which an electric motor 12 is fixed as a drive source on the bottom surface of the central end in the horizontal direction Z side of the fixed plate 10 and a male screw is screwed around the rotor extending in the horizontal direction X via a coupling 13 on the rotor side. A rectangular parallelepiped having a shaft 14 pivotally supported by a bearing 15 fixed to the bottom of the central portion of the horizontal X-side end of the fixed plate 10 and capable of rotating in the forward and reverse directions by the rotation of the motor 12, and having a female screw threaded through the central portion. A mounting plate 17 to which the upper surface of the movable unit 16 is fixed is fixed to the horizontal lower surface of the slide plate 11, the female screw of the movable unit 16 is screwed to the male screw of the screw shaft 14, and the motor 12 can be moved by forward and reverse rotation. The unit 16 is configured to be slidable in the horizontal direction X (the projecting direction of the transverse step 6) and Z (the backward direction of the transverse step 6).

  The front side in the horizontal direction X of the crossing step 6 is closed by a crossing step front plate 22, but a narrow and sharply shaped receiver 25 protrudes substantially from the center and is adjacent to the telescopic step. It is possible to fit in the crossing step opening 24 of the crossing step receiving plate 23 provided under the floor of the spectator seat. Further, an open stopper receiving member 42 is provided at the end of the front plate 22 of the crossing step so that the conical stopper 21 at the tip of the lifting step described later can protrude in the horizontal direction X. In the drive device 20, hydraulic pressure may be used as a drive source instead of the electric motor 12 of the present embodiment, or a power cylinder or the like in which a screw shaft is integrated with the drive source may be used.

  The lifting step and lifting device will be described with reference to FIGS. A rectangular parallelepiped ascending / descending step 7 is built in the front end portion of the slide plate 11 of the transverse step 6. The elevating step 7 includes a square plate-shaped stepping plate 29, a supporting device 30 that supports the stepping plate 29, and two U-shaped elevating step brackets 28, 28 fixed to the lower surface of the slide plate 11. ing. The support device 30 is provided with a pair of links 31 and 32 that intersect in a vacant manner with the link fulcrum shaft 37 substantially in the center, parallel to the horizontal direction X and the vertical direction. The top end of the rear link 31 as viewed from the horizontal direction X is fixed to the lower surface of the tread plate 29 by a support material, and the lower end of the rear link 32 is fixed to the top surface of the bottom plate 43 by a support material. Are pivotally supported by each axis, and are rotatable with respect to each axis. On the other hand, a lower movable shaft 36 is fixed to the tip of the link 31 on the front side when viewed from the horizontal direction X, and can slide in the horizontal directions X and Z, but cannot be moved in the vertical direction. A guide (not shown) is provided, and an upper movable shaft 35 is fixed to the front end of the link 32 on the front side, and is slidable in the horizontal directions X and Z, but on the lower surface of the tread plate 29 so that it cannot move in the vertical direction. A guide (not shown) is provided. In the state in which the links 31 and 32 are most folded, the tread plate 29 on the upper fixed shaft 33 and the upper movable shaft 35 is held flush with the slide plate 11.

  It is desirable for reinforcement to pass a reinforcing material between the pair of parallel links 31 and 32 to the front and rear intermediate positions of the link fulcrum shaft 37 at portions other than the tip portions, and the links 31 and 32 have upper and lower limit positions on the upper surface of the bottom plate 43. It is desirable to provide a safety stop device so as not to exceed (not shown). A spring 38 is stretched between spring support members 39 and 40 fixed to the upper surface of the link fulcrum shaft 37 and the bottom plate 43. A conical stopper 21 is provided on the center extension line between the pair of links 31 and 32 at the tip of the stopper support arm 41 protruding in the horizontal direction X at the tip of the lower movable shaft 36.

  With reference to FIG. 6, another example of the lifting step and lifting device will be described. The components common to the elevating step and the elevating device described with reference to FIG. A stopper support arm 46 that extends in the horizontal direction Z from the lower movable shaft 36 and passes through the lower fixed shaft 34 and bends vertically from the surface of the slide plate 11 is provided, and a stopper 44 that protrudes in the horizontal direction X above the support arm 46. The support arm 46 is movable in the horizontal directions X and Z by the movement of the lower movable shaft 36. A stopper receiving member 45 is fixedly disposed in the vicinity of the end in the horizontal direction X side of the floor 4L so as to contact the tip of the stopper 44.

  Next, the operation of the embodiment will be described. In FIG. 3, the crossing step 6 in which the elevating step 7 is housed in the front end portion moves from the standby position of the right two-dot chain line to the use position indicated by the solid line by moving in the direction of the arrow X by the driving device. The stopper 21 comes into contact with 42 and the raising / lowering step 7 starts to project. Then, the receiving step 25 is fitted into the transverse step opening 24 formed in the transverse step receiving plate 23, and the movement of the transverse step 6 is stopped. In the meantime, the ascending / descending step 7 is completed. In FIG. 4, the two-dot chain lines P, P, Q, and Q indicate the end surface positions of the telescopic staircases adjacent to each other, and the crossing step 6 is the position where the electric motor 12 is rotated and the most horizontal direction X is projected. However, when the electric motor 12 is reversely rotated from the protruding position, the crossing step 6 moves backward in the Z direction opposite to the horizontal direction X and stops at a position within the Q and Q lines. The rotation start or stop signal of the electric motor 12 is detected by contact between a moving piece interlocking with the forward and backward movement of the transverse step 6 and a limit switch (not shown) disposed on the upper surface of the fixed plate 10.

  In FIG. 5, the crossing step 6 in which the elevating step 7 is housed in the front end portion is in the lower standby position of the floor 4 </ b> L shown in (a), and the links 31 and 32 of the support device 30 are in a folded state. The tread plate 29 on the upper fixed shaft 33 and the upper movable shaft 35 is held flush with the slide plate 11. Next, when the position shown in (b) is reached and the stopper 21 comes into contact with the stopper receiving member 42, the lower movable shaft 36 at the tip of the link 31 moves in the horizontal direction X via the stopper support arm 41 connected to the stopper 21. Although it stops, the lower fixed shaft 34 at the tip of the link 32 on the bottom plate 43 continues to move in the horizontal direction X and reaches the position shown in (c), while the lower movable shaft 36 at the tip of the link 31 moves in the horizontal Z direction. Since the reaction force is received, the links 31 and 32 start to rise in the vertical direction Y around the link fulcrum shaft 37, and the tread plate 29 on the upper movable shaft 35 of the link 32 and the upper fixed shaft 33 of the link 31 moves in the vertical direction Y. Raise to.

  Further, when the lower fixed shaft 34 continues to move in the horizontal direction X and reaches the position shown in (d), the tread plate 29 becomes the most projected position, and the screw shaft 14 and the movable unit 16 of the drive device 20 are mainly used as the lifting step 7. It is locked by friction and is held in that position and used as a step. The spring 38 stretched between the spring supports 39 and 40 is in a state where the tension is strengthened as the link fulcrum shaft 37 is raised, and after the telescopic staircase seat 1 is used, the stopper receiving material 42 is moved to the stopper. When the link 21 is separated, the links 31 and 32 can be automatically restored to the folded state in the direction opposite to the vertical direction Y, and then restored to the position shown in FIG. be able to.

  In FIG. 6, the crossing step 6 in which the elevating step 7 is housed in the front end portion is in the lower standby position of the floor 4 </ b> L shown in (a), and the links 31 and 32 of the support device 30 are in the folded state. The tread plate 29 on the upper fixed shaft 33 and the upper movable shaft 35 is held flush with the slide plate 11. Next, when the position reaches the position shown in (b) and the stopper 44 comes into contact with the stopper receiving member 45, the lower movable shaft 36 at the tip of the link 31 is moved in the horizontal direction X via the stopper support arm 46 connected to the stopper 44. Although it stops, the lower fixed shaft 34 at the tip of the link 32 on the bottom plate 43 continues to move in the horizontal direction X and reaches the position shown in (c), while the lower movable shaft 36 at the tip of the link 31 moves in the horizontal Z direction. Since the reaction force is received, the links 31 and 32 start to rise in the vertical direction Y around the link fulcrum shaft 37, and the tread plate 29 on the upper movable shaft 35 of the link 32 and the upper fixed shaft 33 of the link 31 moves in the vertical direction Y. Raise to. Further, when the lower fixed shaft 34 continues to move in the horizontal direction X and reaches the position shown in (d), the tread plate 29 is in the most elevated position, and the screw shaft 14 and the movable unit 16 of the drive device 20 are mainly used as the lifting step 7. It is locked by friction and is held in that position and used as a step. The spring 38 stretched between the spring supports 39 and 40 acts in the same manner as the embodiment shown in FIG. 5 and can assist the restoration to the position (a).

  BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory drawing of one Example of the step structure for telescopic staircase seats of this invention, (a) At the time of storing of a crossing step (b) At the time of overhanging of a crossing step (c) At the time of raising of a raising / lowering step is shown.   FIG. 5 is a schematic explanatory view of another embodiment of the step structure for a telescopic staircase according to the present invention. (A) When storing a horizontal step (b) When projecting a horizontal step (c) When raising a lifting step Show.   It is a schematic explanatory drawing which shows the action | operation of one Example of the step structure for telescopic step-shaped bleachers of FIG.   (A) Top view (b) Front view (c) Side view is shown by one Example of the drive device used for the step structure for telescopic staircase seats of this invention.   It is a schematic explanatory drawing which shows the operation | movement (a)-(d) of one Example of the raising / lowering apparatus used for the step structure for telescopic staircases of this invention.   It is a schematic explanatory drawing which shows the operation | movement (a)-(d) of the other Example of the raising / lowering apparatus used for the step structure for telescopic staircase seats of this invention.

Explanation of symbols

1L, 1R Telescopic staircase 2L, 2R, 4L, 4R Floor 5 Chair 6 Crossing step 7 Lifting step 8 Building pillar 9 Building doorway 10 Fixed plate 11 Slide plate 12 Drive source 14 Screw shaft 15 Bearing 16 Possible Working unit 18 Groove guide 19 Roller 20 Driving device 21, 44 Stopper 22 Crossing step front plate 23 Crossing step receiving plate 24 Crossing step opening 25 Receptacle 29 Foot plate 30 Lifting device 31, 32 Link 33 Upper fixed shaft 34 Lower Fixed shaft 35 Upper movable shaft 36 Lower movable shaft 37 Link fulcrum shaft 38 Spring 39, 40 Spring support 41, 46 Stopper support arm 42, 45 Stopper receiving member 43 Bottom plate X Crossing step overhanging direction (horizontal direction)
Y Ascending / descending step ascending direction (vertical direction)
Z Crossing step backward direction (horizontal direction)
P, Q Left and right end face position of telescopic staircase

Claims (3)

  A pair of two links in which the lifting device crosses the link fulcrum shaft substantially in the shape of a pavement is disposed in parallel, and a rectangular plate-like tread is placed on the upper end of each link, and the rear end of each link Is supported by an upper fixed shaft fixed to the lower surface of the tread plate by a support material and a lower fixed shaft fixed to the upper surface of the bottom plate by a support material, and the front end of each link is connected to the lower surface of the tread plate by the upper movable shaft and the bottom plate. A lower movable shaft is provided on the upper surface so as to be slidable only in the horizontal direction, a spring is stretched between the link fulcrum shaft and a spring support fixed to the upper surface of the bottom plate, and the horizontal step of the transverse step by the drive device is extended. Each link is raised or lowered by abutment or separation with a stopper receiving material of a stopper fixed to the tip of a stopper supporting arm that is linked to the lower movable shaft that is linked to the extension or retraction. Telescopic stepped bleachers for the step structure characterized in that the capacity.   2. The telescopic staircase structure for telescopic staircases according to claim 1, wherein the stopper is fixed to the tip of a stopper support arm provided in front of the lower movable shaft. Step structure.   2. The telescopic staircase structure for telescopic staircases according to claim 1, wherein the stopper is fixed to the tip of a stopper support arm that is connected to the lower movable shaft rearward. Step structure.

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