JPH08245152A - Footstep device of escalator or moving walk - Google Patents

Abstract

PURPOSE: To secure a footstep device that makes a footboard, a frame or the like require no secondary treatment for positioning, and is ease of their location and excellent in assembling properties, aside from being hard to be deformed even if an impact is added. CONSTITUTION: Each of projecting parts 21t and 22t is formed in respective contact surfaces of two frames 21 and 22, while two recessing parts 11 and 12, where these frames 21 and 22 are shiftable in the cross direction, is retractably formed in these projecting parts 21t and 22t. In time of assembly, the frames 21 and 22 are screwed to the recessing parts 11 and 12 after positioning these recessing parts, piercing through one part of the frames 21 and 22 of both front and rear supports 31 and 32, whereby two projecting parts 31t and 32t are formed on each contact surface of the frame 11 and 12 at both front and rear wheel sides. In addition, the projecting part 31t and 32t being retractable to or from these 31t, 32t existing at the rear-wheel side are set to be two recessing parts 11w and 12w shiftable in the traveling direction on the contact surfaces with these front-rear wheel supports 31 and 32 of the recessing parts 11 and 12, and also the projecting part or recessing part existing at the front wheel side are set to be two recessing parts 11x and 12x being unmovable in either direction, and at the time of assembly, both recessing and projecting parts at the rear-wheel side of the supports 31, 31 and the recessing parts 11, 12 are inserted with each other, and next both recessing and projecting parts at the front wheel side of these 31, 32, 11 and 12 are inserted with each other, then these front-rear wheel supports 31 and 32 are clamped tight by screws 11a, 11b and 12a, 12b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a split type escalator or a step device for a moving sidewalk, which comprises a tread plate, a frame, front and rear wheel supports for supporting the front and rear wheels.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 4, a step device for an escalator is composed of a combination of a large number of steps including a step plate 1, a frame 2, front and rear wheel supports 3, a rear wheel 4, and a riser 5. And in the mounting form of the step device,
Between the balustrade (not shown) on both sides of each step, for example, 2-3
It is installed so that a gap of mm is always maintained, and strict dimensional control is applied to each step so that passengers' clothes are not caught and each step does not come into contact with the skirt guard.

FIG. 5 is an exploded perspective view of one of the conventional steps of FIG. 4 (a state in which the top and bottom are turned upside down with respect to the arrangement state of FIG. 4). The frames 21 and 22 and two front and rear wheel supports 31 and 32 that respectively support front wheels and rear wheels 41 and 42 (not shown), and are configured as follows.

That is, the treads 11 and 12 are arranged side by side in a direction orthogonal to the traveling direction, and the treads 11 and 1 arranged side by side are arranged.
Frames 21 and 22 are arranged on the rear surface of 2 at both ends in the direction orthogonal to the traveling direction, and the frames 21 and 22 are fastened to the treads 11 and 12 by screws 61 and 62, respectively. In this case, female treads 11a, 11b, 12a, 12b are formed in the treads 11, 12, respectively, and screw insertion holes 21a, 2 are formed in the frames 21, 22.
2a and 21b, 22b are formed, the screw 61 is inserted into the screw insertion hole 21a of the frame 21 and is screwed into the female screw holes 11a and 11b, and the screw 62 is inserted into the screw insertion hole 22a of the frame 22 and is internally screwed. Holes 12a, 1
It is screwed to 2b.

Further, the step board 11 has a recess 11 for inserting a boss.
c, 11d are formed, and the boss insertion recess 1 is formed in the tread 12.
2c and 12d are formed, boss insertion holes 21c and 21d are formed in the frame 21, boss insertion holes 22c and 22d are formed in the frame 22, and bosses 63 and 63 are formed in the boss insertion recesses 11c and 11d. Respectively, and the bosses 64, 64 are inserted into the boss insertion recesses 12c, 12d.
Respectively, and the tips of the bosses 63, 63, 64, 64 are inserted into the boss insertion holes 21c, 21 of the frames 21, 22 respectively.
d, 22c, 22d. Thereby, the frames 21 and 22 are positioned with respect to the treads 11 and 12.

The mounting portions of the front and rear wheel supports 31, 32 are screwed to the tread plates 11, 12 with the support mounting screws 65, 66, 67, 68 sandwiching the frames 21, 22. Specifically, screw insertion holes 31a, 31b, 32a, 32b are formed in the mounting portions of the front and rear wheel supports 31, 32, respectively, and the female screw holes 11e, 11f, 1 are formed in the treads 11, 12.
2e and 12f are formed, the support mounting screw 65 is screwed into the female screw hole 11f through the screw insertion holes 31b and 21b, and the support mounting screw 66 is inside the female screw hole 11e through the screw insertion holes 31a and 22b. Screwed to the support support screw 6
Similarly, 7 is screwed into the female screw hole 12f through the screw insertion holes 32b and 21b, and the support mounting screw 68 is similarly screwed into the female screw hole 12e through the screw insertion holes 32a and 22b.

[0007]

The conventional steps have been difficult to assemble because of the following points. That is, in order to position the frames 21 and 22, the above-mentioned bosses 63 and 64 are manufactured, and the treads 1 and 12 are attached to the treads 1 and 12.
Recesses 11c, 11 for inserting bosses after 1 and 12 are manufactured
Machined d, 12c, 12d, and further frame 2
1 and 22 have boss insertion holes 21c, 21d, 22c, 22.
It is necessary to machine each d. Also, when assembling the steps, the bosses 63 and 64, the treads 11 and 12, and the boss 6 are also included.
3, 63, 64, 64 and the frames 21, 22 must be precisely aligned and assembled.

The steps are assembled in this way and are transported in the state as shown in FIG. 4, but some impact force is applied during the transportation.
When added to the corners of 1 and 12, as shown in FIG. 6, the frames 21 and 22 may be displaced in the opposite directions, and the treads 11 and 12 may be displaced as shown in FIG. 6, so that the dimensional tolerance as a step is maintained. There was nothing.

The present invention has been made in view of the above circumstances, and its purpose is to eliminate the need for secondary processing for positioning on a tread, a frame, etc., which is easy to position and is easy to assemble, and to be shocked. An object of the present invention is to provide an escalator having a structure that does not easily deform even when added or a step device for a moving sidewalk.

[0010]

In order to achieve the above object, the invention corresponding to claim 1 is such that one side portions are joined to each other and the joint portions are arranged along the traveling direction. In addition, at least two treads each having a convex portion or a concave portion formed on both end sides of each back surface facing each other along the traveling direction, and a projection formed on the back surface of the juxtaposed tread plates. Two frames that can be respectively inserted into the parts or the recesses and that can be moved within a predetermined range only in the direction orthogonal to the traveling direction, and that are fastened to the treads by the fastening members. The front and rear wheels are respectively supported and fastened to the treads by a fastening member. It comprises at least two front and rear wheel supports, and when the recess of the frame is positioned at a predetermined position in the direction orthogonal to the traveling direction of the tread during assembly, the frame is fastened to the tread by a fastening member. It is a split-type escalator or a step device for moving walkways.

In order to achieve the above object, the invention according to claim 2 is characterized in that each one side portion is joined to each other, and
The joint portions are arranged along the traveling direction, and front and rear wheel support convex portions or front and rear wheel support concave portions are formed at respective end sides of the joint portions facing each other at intervals. And at least two treads, and on the back side of the juxtaposed treads, idle insertion holes are formed at positions corresponding to the front and rear wheel support projections or the front and rear wheel support recesses formed on the treads. , Two frames that are fastened to the treads by fastening members, and front and rear wheel support projections or front and rear wheel support recesses formed on the treads in the traveling direction on the rear surfaces of the juxtaposed treads, respectively. Front and rear wheel support recesses or front and rear wheel support projections that can be inserted through free insertion holes formed in each of the frames and that can be moved within a predetermined range only in the traveling direction are formed. Installed at the end of the traveling direction And at least two front and rear wheel supports that respectively support the front and rear wheels and are fastened to the treads by fastening members, and when assembled, the front and rear wheel support recesses or front and rear wheel supports of the front and rear wheel supports. In a state in which the front projections for front and rear wheel support or the recesses for front and rear wheel support of the tread plate are inserted into each other through the loose projections for the frame,
A split type escalator or a step device for a moving sidewalk, which is positioned at a predetermined position in the traveling direction of the tread plate, and then the front and rear wheel supports are fastened to the tread plate by fastening members.

In order to achieve the above object, the invention according to claim 3 is characterized in that the respective one side portions are joined to each other, and
This joint portion is arranged along the traveling direction, and a convex portion or a concave portion is formed on each of the back surfaces on the opposite end sides facing each other along the traveling direction. At least two treads having front and rear wheel support projections or front and rear wheel support recesses formed on opposite end sides thereof at intervals, respectively, and front and rear wheel supports formed on the back surfaces of the juxtaposed treads. The front and rear parts formed on the tread plate are formed with concave parts or convex parts that can be respectively inserted into the convex parts or the front and rear wheel supporting concave parts and can be moved within a predetermined range only in the direction orthogonal to the traveling direction. Free-insertion holes are formed at positions corresponding to the wheel-supporting protrusions or the front-rear wheel-supporting recesses, respectively, and the two frames that are fastened to the treads by the fastening members and the rear surfaces of the juxtaposed treads, respectively. In the direction The front and rear can be inserted into the front and rear wheel support projections or the front and rear wheel support recesses formed on the tread plate through the free insertion holes formed in each frame, and can move within a predetermined range only in the traveling direction. A wheel-supporting recess or front-rear wheel-supporting protrusion is formed, and is installed on the end side in the traveling direction of each frame, and supports front and rear wheels respectively and is fastened to each tread by fastening members. At least two front and rear wheel supports, which are arranged at predetermined positions in the direction orthogonal to the direction of travel of the tread with the recess or projection of the frame and the projection or recess of the tread inserted into each other during assembly. After positioning, the frame is fastened to the tread plate by a fastening member, and the front and rear wheel support concave portions or front and rear wheel support convex portions of the front and rear wheel support are inserted through the loose insertion holes of the frame. The front and rear wheel support protrusions or front and rear wheel support recesses of the tread plate are inserted into each other, and are positioned at predetermined positions in the traveling direction of the tread plate, and then the front and rear wheel support is fastened to the tread plate by a fastening member. It is a split-type escalator or a step device for a moving walkway.

[0013]

According to the invention corresponding to claim 1, one of the convex portion and the concave portion is formed on the contact surface of each frame with the tread plate,
One of a concave portion or a convex portion that can be inserted into a convex portion or a concave portion of the frame on the contact surface with the frame value of the tread plate and can move within a predetermined range only in a direction orthogonal to the traveling direction of the frame. Is formed, after the frame is positioned at a predetermined position in the direction orthogonal to the traveling direction of the tread plate during assembly, the frame is fastened to the tread plate by the fastening member, which facilitates positioning in the traveling direction. It is not easily deformed by impact after assembly.

According to the invention corresponding to claim 2, one of the convex portion and the concave portion is formed on the front wheel side and the rear wheel side, respectively, on the abutting surface of the front and rear wheel supports, which penetrates through the frame and contacts the tread plate. A convex portion or a concave portion provided on the front and rear wheel supports can be inserted into a contact surface of the tread plate with the front and rear wheel supports, and a convex portion or a concave portion provided on the rear wheel side can be moved in a predetermined range in the traveling direction. A convex portion or a convex portion or a concave portion on the front wheel side is a concave portion or a convex portion that cannot move in either the traveling direction or the direction orthogonal to the traveling direction, and front and rear wheel supports and the rear wheel of the tread plate during assembly. After inserting the concavo-convex portions on the side, then inserting the concavo-convex portions on the front wheel side of the front and rear wheel supports and the tread plate to each other, the front and rear wheel supports are fastened to the tread plate by the fastening member, so that the assembly is easy. Accurate position of the tread and front and rear wheel support Ri can be attached.

According to the invention corresponding to claim 3, one of the convex portion and the concave portion is formed on the contact surface of each frame with the tread plate, and the convex portion of the frame on the contact surface of the tread plate with the frame. Alternatively, one of a concave portion and a convex portion that can be inserted into the concave portion and that can move within a predetermined range only in a direction orthogonal to the traveling direction is formed, and the frame is orthogonal to the traveling direction of the tread during assembly. After positioning at a predetermined position in the direction in which the front wheel is fastened, the frame is fastened to the tread by a fastening member, and one of the convex portion and the concave portion penetrates a part of the frame of each front and rear wheel support and contacts the tread plate. Side and rear wheel sides, respectively, which can be inserted into the convex portions or concave portions of the front and rear wheel supports on the contact surfaces of the tread plate with the front and rear wheel supports, and the convex portions or concave portions of the rear wheel side can be used to advance the Move in a certain direction Functioning concave portion or convex portion, and the convex portion or concave portion on the front wheel side is a concave portion or convex portion immovable in neither the traveling direction nor the direction orthogonal to the traveling direction. After inserting the uneven parts on the rear wheel side of the tread plate into each other, and then inserting the uneven parts on the front wheel side and the front wheel side of the tread plate into each other, the front and rear wheel supports are fastened to the tread plate with fastening members. The treads are parallel and the traveling direction and the direction orthogonal to the traveling direction are easily assembled at the correct positions for both the treads and the front and rear wheel supports, and are less likely to be deformed by the impact force after assembly.

[0016]

Embodiments of the present invention will be described below with reference to FIGS. This embodiment is substantially the same as the conventional split type step device described above, and includes two treads 11 and 12, two L-shaped frames 21 and 22, and a front wheel support portion 31.
c, 32c and two front and rear wheel supports 31, 32 for supporting the rear wheels 41, 42, respectively, the tread 11,
12 are arranged side by side in a direction orthogonal to the traveling direction, and the frames 21, 22 are arranged on the back surfaces of the treads 11, 12 arranged side by side in the direction orthogonal to the traveling direction, and the frames 21, 22 are arranged. The treads 11, 12 with screws 62
And the front and rear wheel supports 31, 32 arranged side by side
The rear surface of the frame 12 in the traveling direction,
It is arranged on the upper surface of the end of 22 and each front and rear wheel support 31, 3
2 is fastened to the treads 11 and 12 by screws 65, 66, 67 and 68, respectively, and the points different from the conventional example are as follows.

That is, the treads 11, 12 of the frame 21
Four abutting surfaces of four convex portions 21t having a modified elliptical cross section (side surfaces facing each other in the traveling direction are parallel) are spaced from each other along a direction (width direction) orthogonal to the traveling direction. The protrusions 31t of the mounting portion of the front and rear wheel support 31 and the protrusions 32t of the mounting portion of the front and rear wheel support 32, which will be described later, are inserted (i.e., loosely inserted) on both ends of the contact surfaces of the treads 11 and 12. )
Circular insertion holes (free insertion holes: commonly called stupid holes) 21u, 2
1u are formed respectively.

Further, four convex portions 22t having a deformed elliptical cross section (side surfaces facing each other in the traveling direction are parallel to each other) are orthogonal to the traveling direction on the contact surfaces of the tread plates 11 and 12 of the frame 22. Of the front and rear wheel supports 32 of the mounting portion of the front and rear wheel supports 31, which will be described later, are formed on both end sides of the contact surfaces of the treads 11 and 12 and are spaced apart from each other along the direction (width direction). Circular insertion holes (i.e., loose insertion holes: so-called stupid holes) 22u, 22u, through which the protrusions 32t of the attachment portion are inserted (i.e., loosely inserted), are formed.

On the back surface of the tread 11, convex portions 21t and 22t are provided.
Are formed, and recesses 11u and 11v having racetrack-shaped outer shapes are formed so that they can be inserted respectively and can be moved within a predetermined range only in a direction orthogonal to the traveling direction.
A racetrack-shaped concave portion 11w and a circular concave portion 11x are formed at a widthwise end portion (a position different from the end portion facing the tread 12) along the traveling direction on the back surface of the No. 1 with a space therebetween. ing.

Further, on the back surface of the tread 12, convex portions 21t, 2
The recesses 12u and 12v having racetrack-shaped outer shapes, in which 2t can be respectively inserted and can be moved within a predetermined range only in a direction orthogonal to the traveling direction, are formed. A racetrack-shaped recess 12w and a circular recess 12x are formed at a position (a position different from the end facing the tread plate 11) along the traveling direction with a space therebetween.

At the left and right mounting portions of the front and rear wheel support 31, there are formed convex portions 31t, which are inserted into the concave portions 11w and 11x formed on the tread 11 and have a circular outer shape, respectively.
At the left and right mounting portions of the front and rear wheel support 32, convex portions 32t having a circular outer shape are formed, which are inserted into the concave portions 12w and 12x formed on the tread 12.

In order to assemble the steps having such a structure, the step plates 11 and 12 are arranged side by side, and the frames 21 and 22 are placed on the back surfaces of these steps. Then, the protrusions 21t of the frame 21 are inserted into the recesses 11v and 12v, respectively, and the protrusions 22t of the frame 22 are inserted into the recesses 11u and 12u, respectively. After this, attach the frames 21, 22 to the tread 11,
12 are respectively positioned at predetermined positions in the width direction, and in this state, the screws 62, 62 are respectively inserted into the screw insertion holes 21a, 22a of the frames 21, 22 and the tread 1
The female screw holes 11a, 11b, 12a, 12b of 1 and 12 are respectively screwed.

After that, the front and rear wheel supports 31 are placed on the frames 21 and 22, and the tips of the protrusions 31t on one side of the mounting portions of the front and rear wheel supports 31 are inserted into the insertion holes 21u of the frame 21. , Inserted in the recess 11x of the tread 11,
After this, the tip of the convex portion 31t on the other side of the mounting portion of the front and rear wheel support 31 is inserted into the insertion hole 22u of the frame 22 and is also inserted into the recess 11w of the tread 11, and the rear mounting portion of the front and rear wheel support 31 is The screw 66 is inserted into the screw insertion holes 31a and 22b, the tip of the screw 66 is screwed into the female screw hole 11e of the tread 11, and the screw 65 is inserted into the screw insertion holes 31b and 21b of the mounting portion of the front and rear wheel support 31. The screw 65 is inserted, and the screw 65 is screwed into the female screw hole 11f of the tread 11.

Further, the front and rear wheel supports 32 are placed on the frames 21 and 22, and the tips of the protrusions 32t on one side of the mounting portions of the front and rear wheel supports 32 are inserted into the insertion holes 21u of the frame 21. Insert it into the recess 12x of the tread 12,
After this, the protrusion 32t on the other side of the mounting portion of the front and rear wheel support 32
The front end portion of the frame 22 is inserted into the insertion hole 22u of the frame 22 and is inserted into the recess 12w of the tread 12, and then the screw 68 is inserted into the screw insertion holes 32a and 22b of the mounting portion of the front and rear wheel support 32, and the screw is inserted. Step 1 at the tip of 68
2 is screwed into the female screw hole 12e, and the screw 65 is inserted into the screw insertion holes 31b and 21b of the mounting portion of the front and rear wheel support 32, and the screw 67 is inserted into the female screw hole 12f of the tread 12.
Screw it on.

According to the embodiment configured as described above, the projections 21 formed on the frames 21 and 22 respectively.
The t and 22t and the recesses 11u and 12u formed in the treads 11 and 12, respectively, are configured to be movable in the width direction by a predetermined range. The reason for this is to prevent the following.

That is, since the entire width of the steps is strictly controlled, the treads 11 and 12 are joined to the joints of the left and right treads 11 and 12.
Since a slight gap is formed in order to absorb the dimensional tolerance of the convex portions 21 of the frames 21 and 22.
This is because when t and 22t and the recesses 11u and 12u of the treads 11 and 12 are rotatable, they are easily deformed by an impact as shown in FIG.

From the above, the convex portion 2 is used in this embodiment.
1t, 22t and recesses 11u, 12u of treads 11, 12
Have no gaps in the traveling direction and are movable in the width direction (direction orthogonal to the traveling direction).
Since the steps 1 and 12 do not rotate, the steps are not deformed as shown in FIG. 6 due to the impact force, which is a problem in the conventional technology, and the dimensional tolerance in the width direction is absorbed, No secondary machining by machining is required for positioning.

Further, the convex portions 31 of the front and rear wheel supports 31, 32 are
t, 32t, the recesses 11w, 11x of the tread 11 and the tread 12
Of the recesses 12w, 12x of the front wheel, the side where the front wheel is mounted is fitted with no gap, and the treads 11, 12 are positioned in the traveling direction and in the direction perpendicular to the traveling direction. Since there is no gap in the width direction and there is a gap in the traveling direction, the treads 11, 12 and the front and rear wheel supports 31, 32 are arranged.
Are kept parallel, the front and rear wheel supports 31, 32 are the left and right treads 1
1, 12 and the front and rear wheel supports 31, 32 are at the same position. In addition, the concave portions 11w and 12w and the convex portions 32t and 32 having a gap are provided.
At t, the dimensional error between the treads 11 and 12 and the front and rear wheel supports 31 and 32 is absorbed, and at the time of assembly, the recesses 11w and 1 with a gap are formed.
By assembling 2w and the convex portions 32t, 32t later, the assembly becomes easy.

Further, the treads 11 and 12 and the frames 21 and 21 are
With the configuration of 2, since the treads 11 and 12 are kept in parallel and in a straight line on the left and right, the treads 11 and 12 and the front and rear wheel supports 31 and 32 are assembled.
1 and 32 are parallel on the left and right and are at the same position in the traveling direction.

Further, since the shaft of the front wheel penetrates through the front wheel support portions 31c and 32c of the front and rear wheel supports 31 and 32, the depressions and projections on the front wheel support side are formed as depressions and projections with no gaps. Less susceptible to dimensional tolerances between 11, 12 and front and rear wheel supports 31, 32.

If the dimensions of only the widths of the left and right treads 11, 12 are matched, the frames 21, 22 and the front and rear wheel supports 31, 32 are
The depressions 11u and 12u and the projections 21t and 2 of the treads 11 and 12
By simply combining 2t and 32t, the necessary parts can be easily positioned, and the steps will be less likely to be deformed by impact during transportation.

The present invention is not limited to the above-mentioned embodiment,
For example, it can be modified as follows. In the above-described embodiment, the recesses 11u, 12u and 11w, 11x, 12w, 12x are formed on the back surfaces of the treads 11, 12, the projections 21t, 22t are formed on the frames 21, 22, and the front and rear wheel supports 31, 32 are also provided. Although the convex portions 31t and 32t are formed on the mounting portion of, the same effect can be obtained by forming the convex portions 31t and 32t in reverse as described below. That is, the convex portions 21t, 22 formed on the frames 21, 22 are formed on the back surfaces of the treads 11, 12.
A protrusion similar to t is formed, and a protrusion similar to the protrusions 31t and 32t formed on the mounting portions of the front and rear wheel supports 31 and 32 is formed. The projections similar to the formed recesses 11w, 11f, 12w, 12f are formed, and the projections similar to the recesses 11u, 12u formed in the treads 11, 12 are formed on the frames 21, 22.

In the above-described embodiment, the case where there are two treads, two frames, and two front and rear wheel supports has been described.
The present invention is not limited to this, and the same operation can be performed with three or more. Further, the case where the recesses 11u and 12u formed in the treads 11 and 12 are two is shown, but one or three or more may be formed. Furthermore, the recesses 11u and 12u of the above-described embodiment
If the shapes of the convex portions 21t and 22t are movable in the width direction (direction orthogonal to the traveling direction) by a predetermined range,
Any shape is acceptable.

In the above-mentioned embodiment, the frames 21,
22 is formed with protrusions 21t, 22t, and front and rear wheel supports 31,
Protrusions 31t and 32t are formed on the mounting portion of 32, and correspondingly, depressions 11u, 12u, 11w, and treads 11 and 12,
An example in which 11x, 12w, and 12x are formed is given.
Depending on the application, a convex portion or a concave portion is formed on either one of the frames 21, 22 or the front and rear wheel supports 31, 32,
In addition, the depressions or protrusions may be formed on the treads 11 and 12 correspondingly.

[0035]

According to the present invention described above, the secondary processing for positioning is not necessary on the tread, the frame, etc., the positioning is easy and the assemblability is good, and the structure is not easily deformed even when an impact is applied. An escalator or a moving walkway step device can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of an escalator or a step device for a moving walkway according to the present invention.

FIG. 2 is a rear view of the tread plate for explaining the relationship between the concave portion of the tread plate and the convex portion of the frame in FIG. 1, and the relationship between the concave portion of the tread plate and the convex portions of the front and rear wheel supports.

FIG. 3 is a cross-sectional view for explaining the relationship between the concave portion of the tread plate and the convex portion of the frame of FIG. 1, and the relationship between the concave portion of the tread plate and the convex portion of the front and rear wheels.

FIG. 4 is a perspective view showing an assembled state of a conventional escalator or a split type step of a moving walkway.

5 is an exploded perspective view of the steps of FIG. 4. FIG.

FIG. 6 is a diagram for explaining a problem of the step of FIG. 4.

[Explanation of symbols]

11, 12, ... treads, 11u, 11x, 11w, 12u,
12x, 12w ... Recesses, 21, 22 ... Frame, 21
t, 22t ... convex portion, 31, 32 ... frame, 31t, 3
2t ... convex part, 62, 65, 66, 67, 68 ... screw.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Kenji Fujiwara Kenji Fujiwara 1000 Hamada, Aboshi-ku, Himeji City, Hyogo Prefecture Toshiba Elevator Products Co., Ltd. Within

Claims (3)

[Claims] 1. One side portion is joined to each other, and the joint portion is arranged along the traveling direction, and both end sides of each back surface facing each other along the traveling direction. At least two treads each having a convex portion or a concave portion formed therein, and a direction which is insertable into each of the convex portions or the concave portions formed on the back surface of the juxtaposed tread plates and is orthogonal to the traveling direction. A concave portion or a convex portion that is movable only within a predetermined range is formed on the two sides, and the two frames are fastened to the treads by a fastening member. At least two front and rear wheel supports, which are respectively installed on the end sides in the direction, support front wheels and rear wheels, and are fastened to the treads by fastening members, respectively. A split-type escalator or a step device for a moving sidewalk, in which a frame is fastened to the tread by a fastening member after the portion is positioned at a predetermined position in a direction orthogonal to the traveling direction of the tread. 2. One side part is joined to each other, and the joint part is arranged along the traveling direction, and there is a space on each end side facing the joint part. And at least two treads formed with front and rear wheel support projections or front and rear wheel support recesses, and front and rear wheel support projections formed on the treads on the back surface of the juxtaposed treads or Two frames each having a loose insertion hole formed at a position corresponding to the front and rear wheel supporting recesses and fastened to each of the treads by a fastening member, and the treads on the back surface of the treads arranged side by side in the traveling direction. The front and rear wheel supports that can be inserted into the front and rear wheel support projections or the front and rear wheel support recesses formed in the frame through the loose insertion holes formed in each frame, and that can move within the predetermined range only in the traveling direction. Shape for the concave part or the convex part for supporting the front and rear wheels And at least two front and rear wheel supports that are respectively installed on the end sides of the respective frames in the traveling direction and that support front wheels and rear wheels and that are fastened to the treads by fastening members. Sometimes the front-rear wheel support concave portion or the front-rear wheel support convex portion of the front-rear wheel support is inserted into the front-rear wheel supporting convex portion or the front-rear wheel supporting concave portion of the tread plate through the free insertion hole of the frame, A split-type escalator or a step device for a moving sidewalk, which is positioned at a predetermined position in the traveling direction of the tread plate, and then the front and rear wheel supports are fastened to the tread plate by fastening members. 3. One of the side portions is joined to each other, and the joint portion is arranged along the traveling direction, and both end sides of each back surface facing each other along the traveling direction. At least two treads each having a convex portion or a concave portion formed therein and front and rear wheel supporting convex portions or front and rear wheel supporting concave portions formed on the respective end sides facing the joint portion with a space therebetween. And the front and rear wheel supporting projections or the front and rear wheel supporting recesses formed on the rear surface of the juxtaposed treads, respectively, and can be moved within a predetermined range only in a direction orthogonal to the traveling direction. Concave portions or convex portions are formed, and further, loose insertion holes are formed at positions corresponding to the front and rear wheel supporting convex portions or the front and rear wheel supporting concave portions formed on the tread plate, and are fastened to the tread plates by the fastening members. Two frames The front and rear wheel support projections or front and rear wheel support recesses formed on the treads in the direction of travel on the back surfaces of the juxtaposed treads are inserted through loose insertion holes formed in each frame. Front and rear wheel supporting concave portions or front and rear wheel supporting convex portions that are capable of moving only within a predetermined range only in the traveling direction are formed, and are installed at the end portions of the respective frames in the traveling direction, and the front wheel and A state in which at least two front and rear wheel supports that support the rear wheels and are fastened to the treads by fastening members are inserted into the recesses or projections of the frame and the projections or recesses of the treads during assembly. Position it at a predetermined position in a direction orthogonal to the traveling direction of the tread plate, and thereafter, the frame is fastened to the tread plate by a fastening member. Or, with the front and rear wheel support protrusions inserted into the front and rear wheel support protrusions or the front and rear wheel support recesses of the tread plate through the loose insertion holes of the frame, at a predetermined position with respect to the traveling direction of the tread plate. A split type escalator or a moving walkway step device that is positioned and then fastened the front and rear wheel supports to the treads by fastening members.