JPH05201683A - Escalator step device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a step device for an escalator, in which a wheel stop for a front wheel is projected, a mounting position of a wheelchair is clarified, and safety and time of a wheelchair are improved. It is in. [Structure] A first special step 7A having a movable step plate 12 that can be raised and lowered in a part of a large number of steps 7 that run endlessly in a row, and a first special step that is adjacent to the upper step. 7A
The second special step 7B having the lift mechanism 13 capable of retracting and supporting the movable tread 12 is incorporated, and when the wheelchair is put on, the lift mechanism 13 projects to move on the horizontal path part of the outward path and the movable tread 12 While traveling at the same height as the second special step 7B while traveling on the slope 4b, ensuring a depth dimension of the step board effective for mounting the wheelchairs, and for the wheel of the wheelchair front wheel on the step board of the second special step. 40 is provided so as to be retractable in association with the lift mechanism 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step device for an escalator, which is capable of transporting wheelchairs such as strollers and physically handicapped persons in addition to general users, and in particular, two upper and lower steps are held at the same height. The present invention relates to a step device for an escalator, which is configured to ensure a depth dimension of a tread plate that is effective for mounting wheelchairs.

[0002]

2. Description of the Related Art In a normal general escalator step device, since the depth of each step is short, wheelchairs such as persons with disabilities cannot be mounted safely in a horizontal posture. For this reason, recently, among a large number of steps arranged in an endless manner, a step device for an escalator is proposed, in which two upper and lower steps are held at the same height to ensure a wide space for mounting wheelchairs. Has been done.

The structure of this type of proposal will be briefly described with reference to FIGS. 5 to 9. First, as shown in FIG. 5, the upper and lower floor side entrances and exits 2 of the escalator main frame 1 diagonally crossed over the upper and lower floors of the building. A step circulation path 4 is formed by arranging a guide rail and a step sprocket between the three, and a large number of steps 7 are formed across the upper path 5 of the circulation path 4, the lower surface return path 6 and the reversal portion of the upper and lower floor side ends. They are arranged endlessly in rows through a chain so that they can be driven to travel. Each of these steps 7 has a step plate 7a on the upper surface and a pair of front and rear wheels 8 and 9 on the lower side.

Of these many steps 7, the upper and lower special steps 7A and 7B adjacent to each other on which the wheelchair K is placed are appropriately specified, and the lower first special step 7A of these two upper and lower steps is designated. As shown in FIGS. 6 and 7, the step main body 11 supported by the front and rear wheels 8 and 9 and the movable step plate 12 housed so as to be movable up and down with respect to the step main body 11 are divided, and the upper side thereof is provided. The second special step 7B adjacent to the step has the same structure as the general step 7, but has a lift mechanism 13 inside.
It has a structure having.

As shown in FIG. 7, the lift mechanism 13 includes a pair of left and right pinions 14 arranged coaxially, a pair of left and right racks 15 meshing with the pinions 14, and a left and right pair of racks extending rearward from the racks 15. The pinion shaft 14a is connected to a drive mechanism (not shown) provided in the lower portion of the second special step 7B via a bevel gear or the like. This drive mechanism is mounted on the escalator main frame 1 side, and is a drive rack 17 to be described later as a biasing means.
(See FIG. 8) to obtain a rotational driving force, and the pinion shaft 14a is rotated forward and backward together with the left and right pinions 14 to rotate the left and right arms 16 via the rack 15.
The second special step 7B appears and disappears rearward from the riser.

That is, in normal times, the left and right arms 16 of the lift mechanism 13 retreat into the second special step 7B and have no relation with the first special step 7A, and all the steps 7, 7A, 7B are Normally run like a general escalator,
Carry general customers. On the other hand, when the wheelchair loading mode is set by operating the switch to put the wheelchairs K on, the drive rack 17, which is the urging means on the side of the escalator main frame 1, on the lower floor horizontal road portion 5a of the outward path 5 in FIG. Driven by a motor, it rises to a predetermined height, on which the second special step 7B is placed.
Is driven, the lower drive mechanism is engaged with the drive rack to obtain a rotational drive force. As a result, the pinion shaft 14a of the lift mechanism 13 rotates together with the left and right pinions 14 to move the left and right arms 16 via the rack 15 to the second special step 7B.
The movable tread plate 12 of the first special step 7A is supported from below by projecting rearward from the kick-up portion.

In this state, the first and second special steps 7A, 7
A person in charge puts wheelchairs K on B, and the first
As the second special steps 7A and 7B travel and move from the lower floor horizontal road portion 5a of the outward path 5 to the inclined road portion 5c, the first and second arms 16 are supported by the left and right arms 16 as shown in FIG. The movable step plate 12 of the special step 7A is raised with respect to the step main body 11 and is held at the same height as the step plate of the second special step 7B, so that a sufficient mounting space for wheelchairs K is secured. That is, the first and second special steps 7A and 7B do not form a step, and ascend the ramp 5c while ensuring a large footboard depth dimension effective for mounting wheelchairs K and the like.

While carrying the wheelchairs K in this way, the second
When the special step 7B comes to the upper floor side horizontal road portion 5b of the outward path 5, the drive mechanism engages with the drive rack of the urging means similar to that described above and rotates in the reverse direction. The arm 16 of the first special step 7A is disengaged from the movable step plate 12 of the first special step 7A and retracts and returns to the inside of the second special step 7B, so that the first and second special steps 7A and 7B return to the normal state.

The first and second special steps 7A,
The upper side of the second special step 7B is considered in consideration of the case where the mounting space of the wheelchair K cannot be sufficiently secured by only 7B, that is, the case where a footrest or the like is provided so as to project on the front side of the wheelchair K. Adjacent to the step, a third special step 7C that is tilted backward only in the wheelchair loading mode is provided.

Further, as proposed in Japanese Patent Publication No. 63-51956, for example, as shown in FIGS. 8 and 9, the first special step 7A has the purpose of preventing the wheelchair K from falling. A rear wheel stop 20 is provided near the rear end of the movable step plate 12, and the rear wheel stop 20 is guided by a guide 21 to form a hole in the movable step plate 12 of the first special step 7A. A vehicle stop retracting mechanism 22 and a vehicle stop drive mechanism 23 are provided as means for moving the vehicle out of the 12a.

The car stop retracting mechanism 22 comprises a pinion 24 and a rack 25 mounted inside the movable tread 12 of the first special step 7A. The car stop drive mechanism 23 includes front and rear sprockets 26, 2 inside the step main body 11 which is a non-elevating portion.
7 and a drive pinion 29 coaxial with the rear sprocket 26. The pinion 24 of the car stop retracting mechanism 22 is meshed with the chain 28. The drive pinion 2 of the car stop drive mechanism 23
9 engages with a drive rack 17 as an urging means mounted on the escalator main frame 1 side to obtain a rotational drive force, and rotates the pinion 14 together with the chain 28 in the forward and reverse directions. The wheel baffle 20 can be moved in and out of the hole 12a of the movable tread 12 of the first special step 7A.

That is, in normal times, the rear wheel baffle 20 remains retracted into the movable tread 12, and in the wheelchair-mounted mode, the lower floor horizontal road portion 5a of the outward path 5 is as shown in FIG. The drive rack 17 is raised to a predetermined height by the drive of the motor 18, the first special step 7A travels there, and the drive pinion 29 of the car stop drive mechanism 23 at the lower part thereof meshes and rotates. By receiving the force, the pinion 24 of the car stop retracting mechanism 22 rotates together with the chain 28 to move the rear wheel car stop 20 projecting upward through the rack 25,
The rear wheel of wheelchair K will come to be received from the rear side.

In this state, the first and second special steps 7A, 7
When B moves from the horizontal road portion 5a of the outward path 5 to the inclined road portion 5c, as described above, when the movable step plate 12 of the first special step 7A is raised with respect to the step main body 11 by the support of the lift mechanism 13. As shown in FIG. 10, the car stop retracting mechanism 22 is connected to the car stop driving mechanism 23 through the chain 28.
The pinion 24 will be separated. And the first and second
When the special steps 7A, 7B of the first special step 7A come to the upper horizontal passage 5b of the outward path 5, the movable step plate 12 of the first special step 7A descends with respect to the step main body 11, so that the chain 28 of the car stop drive mechanism 23 is The pinion 24 of the car stop retracting mechanism 22 meshes, and in this state, the drive pinion 29 of the car stopping drive mechanism 23 meshes with the drive rack of the upper floor side horizontal road portion 5b and rotates in the reverse direction. Wheel stopper 20 and movable tread 12
It is designed to move in and out.

Further, as shown in FIGS. 8 and 9, there is provided a holding pin 30 which meshes with the drive pinion 29 of the car stop drive mechanism 23 to move forward and backward. The holding pin 30 locks and releases the stored state of the movable step plate 12 with respect to the step main body 11. That is, even if the first special step 7A runs upside down on the return path 6 of the circulation path 4, the movable tread 12 is held by the holding pin 30 so as not to hang down.

[0015]

By the way, in the conventional step device for the escalator as described above, the first special step 7 is used.
The movable tread 12 of A is lifted and supported so as to maintain the same height as the second special step 7B, and it becomes possible to secure a sufficient mounting space for mounting the wheelchairs K and the first step. Rear wheel suspension 20 on the movable tread 12 of the special step 7A
The wheelchair K can be prevented from falling by protruding.

However, when the wheelchair K is mounted in the escalator uphill driving mode, the first, second, and third special steps 7A, 7 in the lower horizontal road portion 5a of the outward path 5 are mounted.
Since all of B and 7C are in a state in which the surfaces of the treads 7a are arranged horizontally at the same height, it is not clear in which state the wheelchair K should be placed.

For this reason, if a wheelchair K or the like is placed on the wrong portion, the first special step 7A will be performed thereafter.
The rear wheel bumper 20 protruding above the movable tread 12 pushes up the rear wheel and lifts it up, and further shifts from the top of the first and second special steps 7A and 7B to allow wheelchairs K to be placed on the slope 5c. There was a risk that it would become very unstable due to tilting.

If the mounting range of the wheelchairs K is not clear, it takes time to get into the wheelchairs K, and it is difficult to say that the wheelchairs K are allowed to board while the escalator operation continues. There was a problem that it was not possible to shorten the time required for the transportation of items.

On the other hand, in the conventional step device of the escalator as described above, in order to move the rear wheel car stop 20 in and out, the first car stop drive mechanism 23 is provided to obtain the rotational driving force by the bias from the escalator main frame 1 side. The special step 7A is mounted inside the step main body 11 which is a non-elevating portion, and a car stop retracting mechanism 22 that interlocks with the car stop driving mechanism 23 to move the rear wheel car stop 20 in and out is mounted inside the movable step board 12. Therefore, when the movable tread 12 rises with respect to the step main body 11 by the support of the lift mechanism 13, the car stop retracting mechanism 22
Is completely separated from the car stop drive mechanism 23. That is, the pinion 24 of the car stop retracting mechanism 22 is separated from the chain 28 of the car stop driving mechanism 23.

In this separated state, the car stop retracting mechanism 2
2 is free and loses the holding force of the rear wheel baffle 20 and the rear wheel baffle 20 lowers due to traveling vibration or the like, and a dedicated holding mechanism for preventing this is required.

Since the car stop drive mechanism 23 inside the step main body 11 which is the non-elevating portion is also independently free, the holding pin 30 meshed with the drive pinion 29 is displaced due to traveling vibration or the like. A holding mechanism for preventing the above is also required. Therefore, it is necessary to provide two independent holding mechanisms for one special step 7A, and there is a problem that the configuration becomes very complicated.

Further, the car stop retracting mechanism 22 separates from or re-engages with the car stop driving mechanism 23 as the movable tread 12 moves up and down, but if there is a misalignment during the re-engagement, the chain 28 will have a pinion 24. Could not be meshed smoothly, both of them would be worn, or power could not be transmitted properly, and the rear wheel bobbin 20 could not be properly moved in and out.

The present invention has been made in view of the above circumstances,
A first object of the present invention is to provide a step device for an escalator, in which the mounting position of the wheelchairs is clear, and the safety of the boarding and transporting of the wheelchairs can be improved and the time can be shortened.

The second object of the present invention resides in the first
Even if the movable step plate goes up and down with respect to the non-elevating part of the special step, the car stop retracting mechanism does not separate from the car stop driving mechanism and always maintains the connected state, simplifying the configuration and accurately protruding and retracting the car stop. An object is to provide a step device for an escalator that can be moved.

[0025]

In order to achieve the first object, a step device for an escalator according to a first aspect of the present invention has a large number of endless rows of vehicles running between the upper and lower floors of an escalator. A first special step having a movable step plate that can be lifted and lowered, and a lift that is adjacent to the upper side of the first special step and that supports the movable step plate of the first special step A second special step having a mechanism is incorporated, and when a wheelchair is put on, the lift mechanism of the second special step causes the first special step at the forward horizontal path between the upper and lower floor entrances / exits. The second special step is configured such that the movable step plate of the step is supported at the same height as the second special step while traveling on the forward slope to secure a depth dimension of the step plate effective for mounting wheelchairs. Wheelchair front wheel stops on the tread of the Characterized by being configured provided retractably.

In the step device of the escalator having such a structure, when the wheelchair K is mounted, the first and second special steps are horizontally arranged at the same height in the horizontal path portion of the outward path. However, the wheel stop for the front wheels of the wheelchair projects on the tread plate of the second special step in conjunction with the lift mechanism. As a result, the clerk can load the wheelchair from the escalator entrance / exit until this front wheel hits the front wheel stop, and the mounting work is completed, and the wheelchair is properly mounted on the correct part on the first and second special steps. To be done. As a result, for example, after the wheelchair is mounted, the rear wheels are pushed up and floated by the rear wheel car stop projecting on the movable step plate of the first special step, and further, the rear road wheel is displaced from the first and second special steps, and the slope portion is displaced. There is no need to worry about the wheelchair tilting, and the wheelchair can be transported stably and safely.

Further, as described above, since the front wheel suspension is used as a guide to clarify the range in which the wheelchairs can be mounted, the wheelchairs can be easily and quickly boarded, and it is possible to continue the operation of the escalator. It will be possible to shorten the time required for transporting items.

In order to achieve the second object, the step device for an escalator according to the second aspect of the invention is such that a part of a large number of steps which are endlessly lined up between upper and lower floors of the escalator and run, are raised and lowered. A first special step having a movable movable step board and a wheel stopper for wheelchair rear wheels capable of appearing and retracting on the movable step board; and a first special step adjacent to and above the first special step. A second special step having a lift mechanism capable of retracting and supporting a movable step plate is incorporated, and the lift mechanism for the second special step is provided at a horizontal road part on the outward path between the upper and lower floors when the wheelchair is put on. Is projected to move on the forward slope while supporting the movable step plate of the first special step at the same height as that of the second special step, and secures a step plate depth dimension effective for mounting wheelchairs. And is attached to the non-elevation part of the first special step. A car stop drive mechanism that generates a retracting and retracting operation force of the car stop, a car stop retracting mechanism that is mounted on a lower portion of the movable tread to move the car stop in and out by interlocking with the car stop driving mechanism, and the car stop retracting mechanism and the car stop driving mechanism. It is characterized in that a movable transmission mechanism is provided which constantly connects the movable footboard and the movable footboard regardless of whether the movable footboard is raised or lowered.

In the step device of the escalator having such a structure, even when the movable step plate of the first special step is lifted and lowered by the support of the lift mechanism of the second special step, the non-elevating portion of the first special step is raised. The car stop drive mechanism installed and the car stop retracting mechanism installed on the movable tread are always connected by an extendable transmission mechanism so that the rear wheel stop can be moved in and out properly in the wheelchair loading mode. .. In other words, as the movable tread rises, the car stop retracting mechanism does not separate from the car stop driving mechanism as in the conventional case, wear and power transmission failure of both can be prevented, and proper rearing of the rear wheel car stopper can always be performed. become able to.

Further, since the vehicle stop retracting mechanism is always connected to the vehicle stop driving mechanism by the transmission mechanism and does not become free unlike the conventional case, the rear wheel rear wheel retaining mechanism is not necessary even if the rear wheel retaining mechanism is provided. It is possible to prevent the car stop from being lowered due to traveling vibration or the like, and to simplify the configuration.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, the same components as those shown in FIGS. 5 to 9 are designated by the same reference numerals to simplify the description.

First, in the same way as shown in FIGS. 5 to 7 described above, a large number of steps 7 run endlessly in a step circuit 4 between the upper and lower floors 2 and 3 of the escalator. As shown in FIG. 1, a first special step 7A and a second special step 7B adjacent to this upper step are partially incorporated. The first special step 7A is provided with a movable step plate 12 capable of moving up and down with respect to the step main body 11 which is a non-movable part, and a pair of left and right rear steps capable of appearing and retracting from a hole 12a in the part near the rear end of the movable step plate 12. It is equipped with a wheel stop 20. Second
The special step 7B is a movable step plate 1 of the first special step 7A.
A lift mechanism 13 that lifts and supports 2 can be retracted. In consideration of the case where the mounting space for the wheelchair K cannot be sufficiently secured only by the first and second special steps 7A and 7B, the rearward leaning state is provided only in the wheelchair loading mode adjacent to the upper step. 3 special steps 7C are provided.

The lift mechanism 13 has a pair of left and right pinions 14 arranged coaxially as in the conventional case, and these pinions 14.
A pair of left and right racks 15 that mesh with
It is composed of a pair of left and right arms 16 extending rearward from.

This lift mechanism 13 is the second special step 7B.
It is connected to a drive mechanism 31 provided in the inner lower part. The drive mechanism 31 includes one drive shaft 32 arranged vertically, the upper end of the drive shaft 32, and the pinion shaft 1 of the lift mechanism 13.
4a, a set of bevel gears (not shown), an interlocking gear 33 arranged at the lower end of the drive shaft 32, an interlocking gear 34 meshing with the interlocking gear 33, and a drive pinion 35 coaxial with the interlocking gear 34. ..

The drive pinion 3 of this drive mechanism 31
5 is a horizontal floor portion 5a on the lower floor of the outward path of the escalator main frame 1 side
The rotary mechanism 36 is engaged with the drive rack 36 (see FIG. 2) installed as a biasing means to obtain a rotational drive force, and the lift mechanism 1
By rotating the pinion shaft 14a of No. 3 together with the left and right pinions 14, the left and right arms 16 via the rack 15.
Is projected rearward from the kick-up portion of the second special step 7B to support the movable step plate 12 of the first special step 7A from below.

The drive racks 36 are respectively installed on the upper and lower horizontal roads 5a and 5b on the outward path of the escalator main frame 1 side, and in normal times, the drive racks 36 are located at positions where they do not mesh even if the drive pinion 35 moves. It is evacuated and retracted, and only in the wheelchair loading mode, the motors 37 are raised to a predetermined height so that they can mesh with the drive pinions 35. Moreover, the two drive racks 36 are installed on the upper and lower floors in opposite directions to rotate the drive pinion 35 forward and backward.

Here, as shown in FIG. 1, in the second special step 7B, a pair of left and right wheelchair front wheel detents 40 are slightly forward along the guide 41 from the hole 7b near the front end of the step board 7a. It is provided so that it can appear and disappear in a tilted state,
A car stop retracting mechanism 42 for moving the front wheel stop 40 in and out in association with the lift mechanism 13 is provided.

The front-wheel wheel stop retracting mechanism 42 includes a pair of left and right transmission gears 43 meshing with the pinion 14 of the lift mechanism 13, a pair of left and right pinion 44 meshing with the transmission gears 43, and the pinion 44 meshing with each other. A pair of left and right racks 45 are provided, and the pair of left and right front wheel detents 40 are projected from the left and right racks 45 in a state of being raised forward.

On the other hand, as shown in FIG. 1 to FIG.
At the special step 7A of the above, the rear wheel suspension 20 is guided 2
As means for moving the movable tread 12 upward and downward from the hole 12a of the movable tread 12, the vehicle stop retracting mechanism 52 and the vehicle stop driving mechanism 53 are provided in a state of being always connected by a telescopic transmission mechanism 54.

The car stop retracting mechanism 52 for the rear wheels is the first
Pinion shaft 55a inside the movable tread 12 of special step 7A
A pair of left and right pinions 55 that are coaxially mounted via
It is composed of a pair of left and right racks 56 meshing with these, and the rear wheel bobbin 20 is attached to these racks 56. Further, the interlocking shaft 58 is brought into a state of interlocking with the pinion 55 via the interlocking gear 57 meshed with the right pinion 55.
Is provided.

The car stop drive mechanism 53 for the rear wheels has a vertical drive shaft 60 provided inside the step main body 11 which is a non-elevating portion.
And a first interlocking shaft 63 that is interlocked with an upper end of the drive shaft 60 by a set of bevel gears 61 and 62, and a second interlocking gear that is interlocked with the first interlocking shaft 63 through interlocking gears 64 and 65. It comprises a shaft 66, an interlocking gear 67 arranged at the lower end of the drive shaft 60, an interlocking gear 68 meshing with the same, and a drive pinion 69 coaxial therewith.

The telescopic transmission mechanism 54, which constantly connects the rear wheel car stop retracting mechanism 52 and the car stop driving mechanism 53, uses the transmission shaft 70 whose length can be freely expanded and contracted, and one end of the transmission shaft 70 is used. Is connected to the end of the second interlocking shaft 66 of the car stop drive mechanism 53 via a universal joint 71, and the other end is connected to the end of the interlocking shaft 58 of the car stop retracting mechanism 52 via a universal joint 72.

Then, the car stop drive mechanism 53 for the rear wheels
The drive pinion 69 of the drive rack 36 as a biasing means in the lower floor horizontal road portion 5a of the outward path on the escalator main frame 1 side.
The rotation driving force is obtained by engaging with the pinion 55, and the left and right pinions 55 of the car stop retracting mechanism 52 are transmitted through the retractable transmission mechanism 54.
Rotate the rear wheel stoppers 20 for the left and right wheels via the rack 56.
Moves projecting from the hole 12a of the movable tread 12 of the first special step 7A to receive the rear wheel of the wheelchair K from the rear side.
The drive pinion 69 of the car stop drive mechanism 53 meshes with a drive rack (not shown) as an urging means at the upper horizontal path 5b on the outward path to obtain a reverse rotation drive force, and a telescopic transmission mechanism. The left and right pinions 55 of the vehicle stop retracting mechanism 52 are reversely rotated via 54, and the left and right rear wheel wheel stops 20 are moved back and forth into the movable tread 12 of the first special step 7A via the rack 56. ..

A holding pin 75 for locking and releasing the stored state of the movable tread 12 is provided on the step main body 11 of the non-elevating portion of the first special step 7A as a guide 76.
It is provided through. The holding pin 75 is moved forward and backward by a pinion 77 fitted to the drive shaft 60 of the car stop drive mechanism 53 and a rack 78 meshed with the pinion 77, and is engaged with and disengaged from a member 79 with a locking groove hanging from the movable tread 12. It is like this.

However, in the step device of the escalator having the above-described structure, the drive racks 36 of the urging means of the horizontal path portions on both the upper and lower floors of the outward path of the step circulation path are retracted in normal times, and the lift mechanism 13 is retracted. The left and right arms 16 of the vehicle have been retracted into the second special step 7B, have no relationship with the first special step 7A, and both front and rear car stops 40, 20 have been retracted. , Each step 7, 7A, 7B, 7
All of C move in the same manner as those of a general escalator and carry general customers.

Here, when a wheelchair is to be mounted, if a clerk operates a switch to enter the wheelchair loading mode, the drive rack 36, which is a biasing means for the horizontal road portions on both the upper and lower floors.
Is raised to a predetermined height by driving the motor 37. In this state, the first and second special steps 7 are provided on the horizontal road portion on the lower floor side.
When A and 7B move, first, the drive rack 3 there.
The drive pinion 35 of the drive mechanism 31 of the second special step 7B is engaged with 6 to obtain a rotational drive force, the left and right pinions 14 of the lift mechanism 13 rotate, and the rack 15 meshed with this.
At the same time, the left and right arms 16 project rearward to support the movable tread 12 of the first special step 7A from below.

At the same time, the left and right pinions 14 and the transmission gears 43 rotate the pinions 44, whereby the front wheel detents 40 project and move along with the left and right racks 45 onto the tread 7a.

In this state, an attendant loads the wheelchairs onto the first and second special steps 7A and 7B from the lower floor entrance / exit. At this time, the first and second special steps 7A and 7B are in a state in which the mutual steps are arranged horizontally at the same height, but the pair of left and right front wheels are placed on the steps of the second special steps 7B. Since the car stop 40 is projected, the clerk can get on the wheelchair until the front wheel hits the front wheel car stop 40, and then the mounting work is completed. The wheelchair has the first and second special steps 7
It will be possible to quickly and accurately mount it on the correct parts on A and 7B.

Then, the first and second special steps 7A and 7B
When the vehicle travels a little and the drive pinion 69 of the rear wheel car stop drive mechanism 53 under the first special step 7A meshes with the drive rack 36 to obtain a rotational force, the car stop drive mechanism 5
3 through a transmission mechanism 54 that can expand and contract, a car stop retracting mechanism 52
And the pinion 55 rotates, and the rear wheel suspension 20 moves upward via the rack 56.

At this time, since the wheelchairs are mounted on the first and second special steps 7A and 7B in the correct positions on the wheelchairs as described above, the rear wheel suspension 20 is projected onto the movable tread 12. The inconvenience of pushing up the rear wheel of the wheelchair and floating it is eliminated. The rear wheel baffle 20 properly receives the rear wheel of the wheelchair from the rear side.

At the same time, the holding pin 75 interlocks with the car stop driving mechanism 53 through the pinion 77 and the rack 78, whereby the holding pin 75 moves backward to the left as shown in FIG. .. The storage lock state of the movable step plate 12 of the first special step 7A in the step main body 11 is released.

In this state, the first and second special steps 7A, 7B run with the wheelchairs mounted, and the process of transitioning from the lower floor horizontal road section of the outward path to the slope section is performed by the front and rear wheel guide rails. A step motion is generated, but at that time, the movable tread 12 of the first special step 7A is raised with respect to the step main body 11 by the support of the left and right arms 16 of the lift mechanism 13, and as shown in FIG. 2 special steps 7B
Holds flush with.

As a result, even when traveling on the slope 5c,
Movable tread 12 of first special step 7A and second special step 7
B is maintained at the same height and a sufficient footboard depth dimension effective for mounting wheelchairs is secured, so that the mounted wheelchairs can be stably and safely transported without the risk of tilting.

The movable tread 1 of the first special step 7A is then moved from the forward slope to the upper floor horizontal road.
2 is lowered and returned relative to the step main body 11 while being supported at the same height as the second special step 7B. In this state, the vehicle travels on the upper floor side horizontal road portion, and the driving mechanism 31 of the second special step 7B is mounted on the driving rack, which is the urging means in the middle thereof, as described above.
Drive pinion 35 is engaged and rotates in the reverse direction, and lift mechanism 1
The left and right arm 16 is retracted into the first special step 7A by the left and right pinion 14 and the rack 15 of the third pinion 14 to release the support of the movable step plate 12 of the first special step 7A, and at the same time, the left and right pinions are released. The pinion 44 reversely rotates via 14 and the transmission gear 43, so that the front wheel stop 40 is retracted together with the left and right racks 45.

In this state, the clerk can push the wheelchairs to get off from the upper floor entrance / exit, and then the drive pinion 69 of the rear wheel suspension drive mechanism 53 of the first special step 7A is moved to the upper floor. Is engaged with the drive rack on the side to rotate in the reverse direction, and the car stop driving mechanism 53 is interlocked with the car stop retracting mechanism 52 via the extendable transmission mechanism 54, so that the pinion 55 rotates in the reverse direction and the rear wheel is transferred via the rack 56. At the same time that the car stop 20 is retracted, the holding pin 75 moves forward to the right side in conjunction with the car stop drive mechanism 53 via the pinion 77 and the rack 78, engages with the locking grooved member 79, and the first special step. The state in which the movable step board 12 of 7A is housed in the step main body 11 is locked and held. With this, the first and second special steps 7A, 7
B returns to the normal running state like other steps 7.

As described above, when the movable tread 12 of the first special step 7A moves up and down by the support of the lift mechanism 13, the transmission shaft 70 of the transmission mechanism 54 expands and contracts while the universal joints 71 and 7 are being extended.
By tilting through 2, the vehicle stop drive mechanism 53 for the rear wheels and the vehicle stop retracting mechanism 52 are always maintained in the connected state. With this, as the movable tread 12 rises, the middle of the car stop drive system does not separate as in the conventional case, wear and power transmission failure can be prevented, and in the wheelchair loading mode, the rear wheel car stop can be properly moved in and out. Will be able to.

Further, since the rear wheel car stop retracting mechanism 52 is always connected to the car stop driving mechanism 53 by the transmission mechanism 54 and does not become free as in the conventional case, a rear wheel car stop dedicated holding mechanism is provided. Even if it is not provided, by providing only one holding mechanism (not shown) that also functions as a holding pin 75 for preventing displacement, it is possible to prevent the rear wheel car stop from being lowered due to traveling vibration or the like. ..

[0058]

Since the step device of the escalator according to the first aspect of the invention is configured as described above, the wheelchair for the front wheels is projected, so that the mounting position of the wheelchairs is clear, and the safety of boarding and transporting the wheelchairs is improved. It is possible to obtain the effect of improving the time and shortening the time.

The step device of the escalator of the second invention is
With the configuration as described above, even if the movable tread moves up and down with respect to the non-elevating portion of the first special step, the rear wheel car stop retracting mechanism is not separated from the car stop driving mechanism and always maintains the connected state. It is possible to obtain the effects of simplifying the configuration and allowing the car stop to move in and out properly.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a running state of each special step in a slope portion showing an embodiment of a step device for an escalator according to the present invention.

FIG. 2 is a cross-sectional view of a first special step in the horizontal road portion according to the above embodiment.

FIG. 3 is a transverse sectional view of a portion of the first special step of the same.

FIG. 4 is a transverse cross-sectional view of a ramp portion of the first special step of the same.

FIG. 5 is a schematic configuration diagram of an entire escalator showing a conventional example.

FIG. 6 is a schematic vertical sectional view of a step row in a slope portion of the conventional example.

FIG. 7 is a vertical cross-sectional view of each special step in the slope portion of the conventional example.

FIG. 8 is a vertical cross-sectional view of a horizontal road portion of a first special step of the above conventional example.

FIG. 9 is a vertical cross-sectional view of a slope portion of the first special step of the conventional example.

[Explanation of symbols]

2, 3 ... Upper and lower floor entrance / exit, 7 ... Step, 7A ... First special step, 7B ... Second special step, 11 ... Non-elevating section, 12 ... Movable step plate, 13 ... Lift mechanism, 20 ... Rear wheel Car stop, 40
... front wheel car stop, 52 ... car stop retracting mechanism, 53 ... car stop driving mechanism, 54 ... telescopic transmission mechanism, K ... wheelchair.

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[Procedure amendment]

[Submission date] August 18, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

The structure of this type of proposal will be briefly described with reference to FIGS. 5 to 9. First, as shown in FIG. 5, the upper and lower floor side entrances and exits 2 of the escalator main frame 1 diagonally crossed over the upper and lower floors of the building. A step circulation path 4 is formed by arranging a guide rail and a step sprocket between the three, and a large number of steps 7 are formed across the upper path 5 of the circulation path 4, the lower surface return path 6 and the reversal portion of the upper and lower floor side ends. They are arranged endlessly in rows through a chain so that they can be driven to travel. Each of the steps 7, which has <br/> tread plate forming a plurality of grooves on the upper surface respectively (cleat plate) 7a in the upper, and a front and rear wheels 8, 9 of each pair at the bottom.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

Further, for example, as proposed in Japanese Patent Publication 63-51956 discloses, for the purpose of preventing the falling of the wheelchair K compound, said first special footstep. 7A, 8 and 9
As shown in, the rear wheel stop 20 is provided near the rear end of the movable step plate 12, and the rear wheel stop 20 is guided by the guide 21 to move the first special step 7A. A vehicle stop retracting mechanism 22 and a vehicle stop driving mechanism 23 are provided as means for moving the vehicle out of the hole 12a. The car stop 20 is shown in the above-mentioned publication.
As shown in, the vertical with multiple thin blades in parallel on the top.
It has a hawk-shaped cross section, and its multiple thin blades
It is configured to emerge from the groove.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

However, when the wheelchair K is mounted in the escalator uphill driving mode, the first, second, and third special steps 7A, 7 in the lower horizontal road portion 5a of the outward path 5 are mounted.
B, 7C is Ri is an upper surface of all of the upper treadle 12, 7a a state disposed horizontally at the same height, moreover, the wheel stopper 20 is the tread plate
Through the 12 holes 12a to the inner bottom of the upper surface groove (cleat)
Since the presence of the wheelchair is unknown even when viewed from above, it is not clear in which state the wheelchair K should be placed.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

For this reason, if a wheelchair K or the like is placed on the wrong portion, the first special step 7A will be performed thereafter.
The rear wheel bumper 20 protruding above the movable tread 12 pushes up the rear wheel and lifts it up. Further, the wheelchair K is dislocated from the top of the first and second special steps 7A, 7B and the slope 5c There was a risk that it would become very unstable due to tilting. Moreover, the bollard 20 does not have a hawk shape in vertical section.
However, a plurality of thin blades on the top of the tread 12 emerge from the groove.
Since it is configured to be strong, it is easy to be damaged due to blade spillage.
There was a degree problem.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction content]

The second object of the present invention resides in the first
Even if the movable step plate goes up and down with respect to the non-elevating part of the special step, the car stop retracting mechanism does not separate from the car stop driving mechanism and always maintains the connected state, simplifying the configuration and accurately protruding and retracting the car stop. An object is to provide a step device for an escalator that can be moved. Further, as a third object of the present invention,
Rollers are strong and strong enough to prevent damage.
In addition, the upper part of the step is
You can see it clearly on the top of the tread of the car and its car stop is a landmark.
Being present, which of the steps where a large number of wheelchairs are continuous
So that you can easily judge whether you should get on the step
Another object is to provide a step device for an escalator.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

Further, since the vehicle stop retracting mechanism is always connected to the vehicle stop driving mechanism by the transmission mechanism and does not become free unlike the conventional case, the rear wheel rear wheel retaining mechanism is not required even if the rear wheel retaining mechanism is provided. It is possible to prevent the car stop from being lowered due to traveling vibration or the like, and to simplify the configuration. The step device of the escalator of the third invention is
In order to achieve the third purpose, the upper and lower floors of the escalator
One of the many steps that run endlessly between the entrances and exits
There is a car stop that can appear in and out of the car, and when stepping on a wheelchair
Support the wheelchair by protruding the car stop on the tread at the top of the step.
The step device of the escalator that stops
Wide horizontal block shape that also serves as a part of the plate
Is characterized by. Step device of escalator with this configuration
However, the car stop has a horizontally wide block shape,
Stronger than conventional thin-walled blades, so there is no need to worry about breakage.
Become In addition, the car stop is a horizontally wide block shape.
Since it is a structure that also serves as a part of the tread on the upper part of the step,
Even if the bollard appears or disappears, it is on the tread above the steps.
Clearly visible on the surface, the car stop becomes a landmark
On which step of the steps where many wheelchairs are continuous.
You will be able to easily determine whether you should get in the car,
Boarding work of chairs becomes smooth.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

First, in the same way as shown in FIGS. 5 to 7 described above, a large number of steps 7 run endlessly in a step circuit 4 between the upper and lower floors 2 and 3 of the escalator. As shown in FIG. 1, a first special step 7A and a second special step 7B adjacent to this upper step are partially incorporated. The first special step 7A is provided with a movable step plate 12 capable of moving up and down with respect to the step main body 11 which is a non-movable part, and a pair of left and right rear steps capable of appearing and retracting from a hole 12a in the part near the rear end of the movable step plate 12. It is equipped with a wheel stop 20. this
The left and right rear wheel bollards 20 must not be damaged.
As shown in Figs. 1 and 4, the horizontal length is strong.
A wide block shape with a groove on the upper surface of the movable tread 12 on the upper surface
It has a plurality of grooves 20a (see FIG. 1) similar to (cleats).
However, when immersed, it is flush with the upper surface of the movable tread 12,
A part of the movable tread 12 is also used and can be seen from above to make a mark.
It is configured to be a target. Second special step 7
B is equipped with a lift mechanism 13 capable of retracting and raising the movable tread 12 of the first special step 7A. In addition, considering the case where the mounting space for the wheelchair K cannot be sufficiently secured only by the first and second special steps 7A and 7B,
Further, a third special step 7C is provided adjacent to the upper step, which is tilted backward only in the wheelchair loading mode.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

[Correction content]

Here, as shown in FIG. 1, in the second special step 7B, a pair of left and right wheelchair front wheel detents 40 are slightly forward along the guide 41 from the hole 7b near the front end of the step board 7a. It is installed so that it can appear and disappear in a tilted state . This left
The right wheelchair front wheel stop 40 is used for the left and right rear wheel vehicles.
As with the stopper 20, do not cause damage etc.
Strong, strong, oblong and wide block shape with a tread on the upper surface
A plurality of grooves 40a (Fig.
1)) and is flush with the upper surface of the tread 7a when immersed.
The part of the tread 7a is also used, and it can be seen from above.
It is designed to be a landmark. A car stop retracting mechanism 42 for moving the front wheel stop 40 in and out in association with the lift mechanism 13 is provided.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Change

[Correction content]

The step device of the escalator of the second invention is
With the configuration as described above, even if the movable tread moves up and down with respect to the non-elevating portion of the first special step, the rear wheel car stop retracting mechanism is not separated from the car stop driving mechanism and always maintains the connected state. It is possible to obtain the effects of simplifying the configuration and allowing the car stop to move in and out properly. Step of escalator of the third invention
As described above, the step device is a block with a horizontally wide car stop.
It has a shape and is stronger and stronger than conventional thin blades.
There is no need to worry about damage, and the car stop is wide and wide.
Since it also serves as a part of the tread above the steps,
Even if the bollard appears or disappears, it is on the tread above the steps.
Clearly visible on the surface, the car stop becomes a landmark
On which step of the steps where many wheelchairs are continuous.
You can easily judge whether you should get on board, and boarding wheelchairs
The effect that work can be done smoothly is obtained.

[Procedure Amendment 11]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (2)

[Claims] 1. A first special step having a movable step plate that can be raised and lowered in a part of a large number of steps running endlessly arranged between the upper and lower floors of an escalator, and the first special step. A second special step having a lift mechanism that is adjacent to the upper side of the step and supports the movable step plate of the first special step and has a retractable lift mechanism is incorporated, and when a wheelchair is put on, a forward path between the upper and lower floors of the entrance and exit On the horizontal road portion, the lift mechanism of the second special step projects so that the movable step plate of the first special step is supported at the same height as the second special step and travels on the forward slope. In a step device for an escalator configured to ensure a depth dimension of a tread plate that is effective for mounting a wheelchair, a wheel stopper for a front wheel of a wheelchair is provided on the tread plate of the second special step so as to be retractable in association with the lift mechanism. Escalator steps characterized by apparatus. 2. An escalator has a movable step plate that can be raised and lowered at a part of a large number of steps that are run endlessly between the upper and lower floors of the escalator, and the movable step plate has a wheel stop for wheelchair rear wheels. A first special step that can be retracted, and a second special step that is adjacent to the upper side of the first special step and that has a lift mechanism that can be retracted and that supports a movable step plate of the first special step. When incorporating a wheelchair, the lift mechanism of the second special step causes the movable step plate of the first special step to project at the second special step in the forward horizontal path between the upper and lower entrances and exits. A step device for an escalator configured to travel on a forward slope part while being supported at the same height as a step to ensure a depth dimension of a step plate effective for mounting wheelchairs, the first step comprising:
A car stop driving mechanism that is mounted on the non-elevating part of the special step to generate the retracting and retracting operation force of the car stop, and a car stop retracting mechanism that is mounted on the lower part of the movable step plate to move the car stopper in and out by interlocking with the car stopper driving mechanism. A step device for an escalator, characterized in that an extendable transmission mechanism is provided which constantly connects the car stop retracting mechanism and the car stop driving mechanism regardless of whether the movable tread is raised or lowered.