JPH0210200Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a staircase device that facilitates the raising and lowering of a step such as a step for a group photo.

[Background technology]

For example, when arranging people in multiple tiers to take a group photo, a multi-tiered step stool can be formed by detachably straddling the tiers between the foldable leg frames. something is known. However, this method had problems, such as having to pass through the lower tiers in order to line up on the upper tier, which tended to disturb the alignment of the people on the lower tier, making photography time-consuming.

[Purpose of invention]

The object of the present invention is to provide a staircase device that has a stair base that is detachably attached to the upper surface of the leg frame, can be conveniently attached to the leg frame, and can solve the above-mentioned problems.

[Disclosure of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings, taking as an example a case where the base frame and the step plate of the stair device of the present invention form a step-like step for a group photo.

In the figure, the stair device 1 includes a locking pin 6 on the outside of the upper surface of a leg frame 5 that spans the treads 4 on the top of a stair base S in which treads 3 are installed in multiple stages between the side girders 2, 2. Locking piece 1 provided with fitting parts 9, 9 that fit into 6
0 is set.

In this example, the leg frame 5 is foldably pivoted to both ends of a connecting link 11 that can be bent in the middle, and is removable to the leg frames 5A, 5A before forming the leg base 13, and to the leg base 13. It includes later leg frames 5B, 5B which are attached to and combined with the leg base 13 to form the leg base 15.

The front leg frames 5A, 5A have a front piece 2 at the front end of the bottom piece 21.
2, a middle piece 23 with a larger height than the front piece 22 is installed at the center and rear end of the bottom piece 21.
The back piece 24 is upright, and a lower support piece 25 connected to the middle piece 23 is horizontally attached to the upper end of the front piece 22, and the middle piece 23 and the back piece 24 have a horizontal support piece 25 attached to the upper end of the front piece 22. The middle support piece 26 is installed. Therefore, the leg frame 5A,
5A, the lower support piece 25 and the middle support piece 26 can form two tiers on which the tier plates 4, 4 are placed. Further, the lower receiving piece 25 and the middle receiving piece 26 are provided with a pair of outer locking pins 6, 6 and an inner locking pin 7, 7, respectively, which are arranged in rectangular positions on the inside and outside near both side edges thereof. There is.
In addition, the upper and lower ends of each back piece 24 of the leg frames 5A, 5A are provided with through holes 15, 15 that pass through the front and back, and the connecting links 11 are attached to the upper and lower front surfaces inside the holes 15, and the leg frames 5A, A foot stand 13 is formed by connecting 5A.

The connecting link 11 consists of receiving metal fittings 31, 31 fixed to the back pieces 24, 24, and a pair of arms 32, 32 connecting them.

The receiving fitting 31 is formed by bending the upper and lower edges of a substrate 41, which is riveted, for example, to the front surface of the spine piece 24, in parallel to form opposing triangular projecting pieces 43, 43 that protrude toward the middle piece 23 side. Note that the protruding end portion of the protruding piece 43 is formed into a circular arc.

The arm 32 is an elongated body having a U-shape in cross section and has flanges 49, 49 projecting forward above and below the board 46. Parallel protrusions 50, 50 are formed, and the protrusions 50, 50 are inserted between the protrusions 43, 43 and supported by pins.

Further, flanges 49, 49 are provided at the other end of the arm 32.
The arm 3
2 and 32 are connected.

Therefore, the connecting link 11 can be bent in a bent shape by being able to rotate at the connecting portion near the back piece 24 and at the connecting portion in the center, and the leg frames 5A, 5A can be bent at the connecting link 11 as shown in FIG. It can be folded over and over again.

Note that the leg stand 13 is provided with an opening prevention metal fitting 35 between the leg frames 5A, 5A. The opening prevention fitting 35 is
A pin-shaped protrusion 36 erected on the back surface of the middle piece 23 of one leg frame 5A, and a pin-shaped protrusion 36 fixed to the back face of the middle piece 23 of the other leg frame 5A and extending toward the one leg frame 5A and fitting into the protrusion 36. It consists of a fitting piece 37 provided with a hole. Since the fitting piece 37 is made of a plate spring material, it has spring properties and can be deformed. As shown by the dashed line in FIG. 3, the fitting piece 37 is bent and deformed to separate from the protrusion 36. The leg frames 5A, 5A can be expanded.

The rear leg frame 5B has a front piece 29 and a back piece 30 that are larger in height than the back piece 24 of the leg stand 13 at the front and rear ends of the bottom piece 28, and also has a front piece 29 and a back piece 30 that are larger in height than the back piece 24 of the leg stand 13. An upper receiving piece 27 is installed horizontally at the upper end of the piece 30, and has a vertically long rectangular shape. Further, the front piece 29 has through holes 39, 39 aligned with the through holes 15, 15.
Transparent. Also, using the through holes 15, 15, 39, 39, the rear leg frames 5B, 5B are connected to the front leg frames 5A, 5A.
By removably bolting to the lower support piece 25, middle support piece 26, and upper support piece 27, the step plate 4,
A footrest 15 is formed that can form a three-stage tiered step H on which 4, 4 can be placed. Note that outer locking pins 6, 6 and inner locking pins 7, 7 are protrudingly provided on the inside and outside of the upper receiving piece 27.

When the leg frames 5, 5 of the leg stand 15 are unfolded in parallel, the step board 4 has upper, middle, and lower support pieces 27, 2.
It is a long rectangular plate that can straddle half the width of each receiving piece consisting of 6 and 25, and has locking holes 20 at both ends aligned with the inner locking pins 7. has been established.

The side beams 2, 2 are a pair of lightweight square pipes made of aluminum, for example, and their upper ends are connected to the front piece 29 and the back piece 3 of the rear leg frame 5B in this example.
It spans diagonally and parallel to the height of approximately three-quarters of the side of 0. Also, while the lower end of the stringer 2 is notched horizontally,
Its upper end forms a vertical surface a along the sides of the notched front piece 29 and the back piece 30.

Further, between the side beams 2, 2, in this example, tread plates 3 are installed in three stages via upper, middle, and lower mounting brackets 55, 56, and 57 that are attached to the side beams 2.

The upper, middle, and lower mounting brackets 55, 56, and 57 extend upward along the upper surface of the stringer 2 by bending both ends of the horizontal piece 61 placed on the side edge of the footboard 3. A fixing piece 62 fixed to the side beam 2 and a supporting piece 63 hanging down from the upper surface of the side beam 2 are formed, forming a substantially L-shape.

Note that in this embodiment, the mounting brackets 55, 5
6, 57, by bending the long strip-shaped base 65, the lower end of the upper mounting bracket 55 is attached to the inner mounting bracket 56.
Also attach the lower mounting bracket 57 to the lower end of the inner mounting bracket 56.
are integrally formed. Further, a fixed piece 62A that is bent upward is formed at the lower end of the support piece 63 of the lower mounting bracket 57, and a fixed piece 62A is formed at the upper end of the fixed piece 62 of the upper mounting bracket 55 so that its back surface is flush with the vertical plane a. The short standing piece 59 is raised.

Further, the tread plate 3 is a rectangular flat plate body, and each side girder 2,
By spanning between the two facing horizontal pieces 61, 61 and fixed to the horizontal pieces 61, 61, the side beams 2, 2 are connected to form the three-step staircase base S.

Further, a locking piece 10 is provided on the upper part of the stair base body S. The locking piece 10 includes fitting portions 9, 9 that fit into locking pins 6, 6 on the outside of the leg frame 5.

The locking piece 10 has a horizontal part 67 that is placed on the outer edge of the upper support piece 27 of the rear leg frame 5B, and a falling part 69 that hangs down from the outer edge of the horizontal part 67. By providing fitting portions 9, 9 consisting of holes aligned with the outer locking pins 6, 6 at both ends thereof, the stair base S can be connected to the step HL via the locking piece 10. It can be detachably attached to the side of the Further, hanging pieces 71, 71 extending downward are attached to the inner surfaces of both ends of the hanging portion 69, and the upper ends of the rising pieces 59, 59 are pivoted to the lower ends of the hanging pieces 71, 71 using a hinge 73. I'm wearing it.

Further, the stair base S is provided with a tread 3A on the side that extends to the step board 4 on the middle receiving piece 26 of the middle step.

The footboard 3A has an L-shaped notch 77 in the back edge of the leg frame 5 side of the rectangular flat board 75, and a long round shaft-like notch 77 into which the back edge is loosely inserted. Shaft piece 7
9 to the upper end of the middle support piece 26, and attach the front side of the upper end of the front stringer 2 and the upper mounting bracket 55.
It is supported between the bearing pieces 91 and 92 attached to the support piece 63. Therefore, the footboard 3A can be tilted up and down, and the notch 77 allows the side edge of the footboard 3A to touch the middle receiving piece 26.
slide to the center of the mating parts 9A, 9.
By fitting A into the locking pins 6, 6, it is locked and becomes horizontal.

However, the upper, middle and lower support pieces 27, 26 of the leg stand 15,
Step plates 4, 4, 4 are attached to each inner locking pin 7 of 25.
By spanning over the steps, a three-step pedestal H can be formed. Also, as shown in FIG.
By arranging the bases 1 and 5 at intervals, the base 1
The step plates 4, 4, 4 can also be bridged between the facing outer locking pins 6, 5, 15, and a three-step long step-shaped step HL can be formed.

In addition, the stair device 1 of this embodiment has the fitting parts 9, 9 of the locking piece 10 on the upper part of the stair base S fitted to the locking pins 6, 6 on the outside of the leg frame 5B, so that each tread 3
. . . is locked horizontally, and the footboard 3A is suspended downward, as shown by the dashed line in FIG. 1, and the leg frame 5
From the receded state, after tilting upward beyond the horizontal position, it slides to the leg frame 5 side and moves to the front leg frame 5A.
The fitting portion 9 fits into the locking pins 6, 6 on the outside of the middle receiving piece 26.
By fitting A and 9A together, they are horizontally locked and can be moved from the stair base S to the middle step board 4.

In addition, since the locking piece 10 is pivotally attached to the upper part of the side beams 2, 2 of the stair base body S using hinges 73, 73,
The outer locking pins 6, 6 can be easily fitted into the fitting portions 9, 9, and can be stably attached to the leg frame 5B even if there is a slight difference in height between the lower ends of the side beams 2, 2.

[Effect of idea]

As described above, the stair device of the present invention is provided with a locking piece that fits and locks with a locking pin on the outside of the top surface of the leg frame over which the steps are spanned, on the top of the stair base on which treads are installed in multiple stages. By making use of the locking pins on the leg frame, the structure can be simplified so that it can be safely and easily attached to or removed from the leg frame, improving its handling and, for example, allowing it to be used as a stage for a group photo. By making it easier to go up and down on the step stool, many effects can be achieved, including speeding up photography.

In addition, as in this embodiment, by using the leg frame and the leg stand which are removable and foldable, it is possible to form a step stool device A that is easy to handle in terms of storage and portability.

In addition, the stair device of the present invention allows the stair base to be folded by, for example, making the stringers bendable,
Furthermore, it can be modified into various configurations, such as by making the side girder and treadle detachable.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention together with its usage state, Fig. 2 is an exploded perspective view thereof, and Fig. 3 is an exploded perspective view of the embodiment.
The figure is a perspective view showing the folded state of the previous leg frame. 2...Stringer, 3...Treadboard, 4...Step board, 5...
Leg frame, 5A...Front leg frame, 5B...Rear leg frame, 6
...Outer locking pin, 7...Inner locking pin, 9
... Fitting portion, 10 ... Locking piece, S ... Stair base.

Claims (1)

[Scope of utility model registration request] A stairway device is attached to the side of a step-like step, and the step has a locking pin protruding from the inside and outside of its upper surface and has receiving pieces of different heights, and the step is arranged parallel to the leg frame. a step plate that fits into the locking pins in the opposing leg frames and straddles between the leg frames; A locking piece having a fitting portion that fits into the outer locking pin protrudingly provided on the upper surface of the receiving piece is provided, and the locking piece is detachably attached to the side of the step stool via the locking piece. A staircase device.