JP3053151B2 - Escalator device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the structure of an escalator device provided with a wheelchair step that transforms from a normal mode during normal driving to a wheelchair mode in which a wheelchair can be mounted.

[0002]

2. Description of the Related Art A conventional escalator having a wheelchair step is disclosed in Japanese Patent Application Laid-Open No. 4-153196, for example, for a single or a plurality of wheelchairs interposed between a plurality of steps of an escalator. A step and a driving force transmission disposed inside the wheelchair step during the wheelchair operation and for transforming the wheelchair step from a normal form to a wheelchair form capable of mounting a wheelchair and from the wheelchair form to a normal form based on rotation of a sprocket shaft. And a mechanism for rotating the sprocket shaft by engaging a power transmission body with a sprocket of a sprocket shaft of a wheelchair step that has been moved during wheelchair operation and is disposed at a portion corresponding to a doorway inside the main frame. I was

[0003]

The conventional escalator apparatus is constructed as described above, and rotates the sprocket shaft disposed inside the wheelchair step to restrain the swing of the wheelchair step in the normal mode. The rod attached to the nut that can move in the width direction through the bracket penetrates the holes of the movable part and the fixed part, and the rod is pulled out from the hole in the wheelchair configuration, but the rod retreats from the hole In this case, it is impossible to prevent the wheelchair steps from being distorted due to the gap between the movable portion and the fixed portion.

[0004] It is an object of the present invention to provide an escalator device in which a rod can smoothly withdraw from a hole to prevent twisting.

[0005]

According to the present invention, in order to achieve the above-mentioned problem, a plurality of normal steps arranged on a main frame of an escalator and circulating, and a special step interposed between the plurality of normal steps are provided. A driving force transmission mechanism that is arranged inside the special step and converts the wheelchair step from a normal form to a wheelchair form capable of mounting a wheelchair based on rotation of a sprocket shaft during special driving, and to perform a transformation operation from the wheelchair form to the normal form. A rod attached via a bracket to a nut movable in a width direction by rotation of the sprocket shaft penetrates a movable portion to restrain swing of a wheelchair step in a normal state, and a rod in a wheelchair state. And a sprocket shaft for the wheelchair steps that are located at the entrance and exit of the main frame and that have moved during wheelchair operation. An engagement device that meshes the power transmission body with the slot and rotates the sprocket shaft, the rod is passed through a hole provided in the movable portion, and a stopper fixed to a member installed on the fixed portion is provided. The operation of the rod positioned in the normal state is restricted, and the stopper releases the restriction on the operation of the rod positioned during wheelchair driving.

[0006]

According to the present invention, in order to restrain the swing of the wheelchair step in the normal mode, the bracket is attached to the nut movable in the width direction by rotation of a sprocket shaft disposed inside the wheelchair step. The rod attached through the hole penetrates the hole provided in the movable part, and the movement of the rod located in the normal state is restricted by a stopper fixed to a member erected on the fixed part. By releasing the restriction on the operation of the rod located and by adopting a simple structure, it is possible to prevent the movable portion of the wheelchair step from swinging in the normal state.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 and 4. In the drawings, reference numeral 1 denotes a balustrade standing on both sides of an escalator main frame, and the balustrade 1 circulates and moves. An endless moving handrail 2 is wound by a driving machine. Reference numeral 3 denotes a plurality of normal steps arranged inside the escalator main frame, and the shaft of the front wheel of the normal step 3 carries the mounted person or luggage by circulating movement based on driving of an endless chain driving device. 4
Is a group of wheelchair steps interposed between a plurality of normal steps 3, which circulates and moves in the same manner as the normal steps 3 during normal operation of the escalator, and as shown in FIG. Has the function of performing a transformation operation into a wheelchair form in which the wheelchair 6a of the wheelchair user 6 assisted by the user can be mounted.

In this embodiment, the wheelchair step group 4 includes the first and the second steps.
It is composed of the second and third wheelchair steps 7, 8, and 9, but is not limited thereto. The second wheelchair step 8 includes a movable step 10 a that forms the same horizontal plane as the tread surface of the first wheelchair step 7 at an inclined portion when the wheelchair is driven, a main body 10, and an erecting member 11 horizontally mounted on the main body 10.
A plurality of support portions 12 attached to both lower sides of the erection member 11, a nut 13 movable inside the plurality of support portions 12 in the left and right direction, and a left and right direction like the nut 13. A movable rod 17, a bracket 14 fixed to the rod 17 and moving the rod 17,
A nut 13 for moving the bracket 14 and a mounting screw 15 for connecting the bracket 14 and the nut 13 are provided. The mounting screw 15 is interposed between the bracket 14 and the nut 13 and has a convex side which is in contact with the bracket 14. A hemispherical spherical seat 16, a pin 17 mounted horizontally on the upper part of the bracket and penetrating through both side walls of the support portion 12, and a stopper 18 for regulating the movement of the nut 13 in the left-right direction;
A stopper 19 is mounted on both sides of the movable step 10a and engaged with the rod 17 during normal operation to restrain the vertical movement of the movable step 10a.

Reference numeral 20 denotes a driving force transmitting mechanism disposed inside the first, second, and third wheelchair steps 7, 8, and 9, respectively. The first, second, and third wheelchair steps 7, 8, and 9 have a function of performing a transformation operation from the normal mode to the wheelchair mode or from the wheelchair mode to the normal mode.

Hereinafter, the structure of the driving force transmission mechanism 20 will be described in detail by taking the second wheelchair step 8 as an example.
As shown in FIG. 2, a screw for power transmission is engraved on both ends of the sprocket shaft 21 mounted on the nuts 13 and 13 of a rotatable sprocket shaft horizontally mounted between the 13. Reference numeral 22 denotes a rotatable sprocket mounted on the sprocket shaft 21. 23 is a sprocket shaft 2
A power transmission screw is engraved on both ends of the sprocket shaft 23 attached to the nuts 13, which are rotatable sprocket shafts located adjacent to the front of the sprocket shaft 1. 2
Reference numeral 4 denotes a rotatable sprocket mounted on the sprocket shaft 23. The gear 2 meshing with the gear 25 is located substantially at the center of the sprocket shaft 23 as shown in FIGS.
5A is attached. Note that the driving force transmission mechanism 20 disposed inside the first and third wheelchair steps 7, 9 is basically configured in substantially the same manner.

Next, the operation will be described. For convenience of explanation, the case of ascending operation will be described.

First, during normal operation, the wheelchair step group 4 circulates and moves in the same manner as the normal step 3, and transports a general user from a lower floor entrance to an upper floor exit. I do.

Next, the case of wheelchair driving will be described.

First, when a wheelchair user 6 who has arrived at the entrance on the lower floor operates the wheelchair operation changeover switch, the wheelchair step group 4 moves horizontally at a low speed below the entrance floor at the entrance. The sprocket 22 of the force transmission mechanism 20 is engaged with the chain 26 attached to the escalator body in order to operate the driving force transmission mechanism 20. At this time, the transformation operation of the second wheelchair step 8 will be described as an example. If the sprocket 22 that moves horizontally meshes with the chain 26 attached to the escalator body and rotates, the sprocket shaft 21 rotates, The sprocket shaft 23 is rotated, the nuts 13 and 13 are moved, the rod 17 is disengaged from the stopper 19, and the movable step 10a is pulled out of the main body 10 and the stepped surface of the first wheelchair step 7 is inclined at the inclined portion. Form the same horizontal plane.

Next, when the wheelchair step group 4 moves horizontally below the exit floor at a low speed, the sprocket 24 of the driving force transmission mechanism 20 meshes with the chain 26 attached to the escalator body. Drive power transmission mechanism 20
To work. At this time, the transformation operation of the second wheelchair step 8 will be described as an example.
4 rotates by meshing with a chain 26 attached to the escalator body, the sprocket shaft 23 rotates, the sprocket shaft 21 rotates, the nuts 13 move, and the rod 17 engages with the stopper 19. , Movable steps 10
a is stored in the main body 10 and returns to the normal mode.

In the above description, the movement of the rod 17 will be described in detail. FIG. 5 shows the position of the rod 17 during wheelchair driving, and FIG. 6 shows the position of the rod 17 during normal driving.

First, when the wheelchair is driven, when the wheelchair step group 4 horizontally moves at a low speed below the entrance floor at the exit, the movable step 10a of the second wheelchair step 8 is stored in the main body 10. At this time, the rod 17 tries to engage with the stoppers 19 mounted on both sides of the movable step 10a.
It is assumed that the center of the rod 17 may deviate from the original normal position in the front-rear direction of the step as shown in FIG. But,
Even when the center of the rod 17 is shifted as shown in FIG. 5, the rod 17 can be properly engaged with the stopper 19 as shown in FIG. 19 is possible.

According to this embodiment, the second wheelchair step 8 is used.
Even if the center of the rod 17 to be engaged with the stopper 19 is deviated to restrain the swinging movement of the movable step 10a, the device provided in the wheelchair step does not exert excessive force when the rod 17 retreats. The operation of the rod 17 positioned during wheelchair driving / normal operation is smoothly regulated and released, and the simple structure prevents the movable part of the wheelchair step from swinging in the normal state, or the wheelchair. It is possible to prevent damage to the equipment of the step.

[0019]

According to the present invention, in order to restrain the swing of the second wheelchair step 8 in the normal mode, the sprocket shaft 21 disposed inside the wheelchair step is rotated to rotate in the width direction. A rod 17 attached to a movable nut 13 via a bracket 14 engages and penetrates a stopper 19 fixed to the movable portion, and is brought into a normal state by a stopper 19 fixed to a member erected on the fixed portion. The movement of the rod 17 is regulated, the stopper 19 releases the regulation of the movement of the rod 17 when the wheelchair is operated, and the simple structure allows the movable part of the wheelchair step to swing in the normal state. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of an escalator device of the present invention.

FIG. 2 is an explanatory view showing a second wheelchair step of the present invention.

FIG. 3 is a plan view showing a state in which the sprocket of the driving force transmission mechanism of the present invention starts meshing with a chain of a descending port attached to an escalator body.

FIG. 4 is a plan view showing a state in which the sprocket of the driving force transmission mechanism according to the present invention and the chain at the entrance mounted on the escalator main body are engaged with each other.

FIG. 5 is an explanatory view showing a second wheelchair step during wheelchair driving according to the present invention.

FIG. 6 is an explanatory view showing a second wheelchair step during normal operation according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... balustrade, 2 ... handrail, 3 ... normal steps, 4 ... wheelchair steps, 5 ... caretaker, 6 ... wheelchair user, 6a ... wheelchair, 7 ... first wheelchair steps, 8 ... second Wheelchair steps, 9: Third wheelchair steps, 20: Driving force transmission mechanism.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-153196 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66B 29/08

Claims (1)

(57) [Claims] 1. A plurality of normal steps arranged on a main frame of an escalator and circulating, a special step interposed between the plurality of normal steps, and a sprocket shaft arranged inside the special step and operated during special operation. A wheelchair step from a normal form to a wheelchair form capable of mounting a wheelchair based on the rotation of the wheelchair, a driving force transmission mechanism for performing a transformation operation from the wheelchair form to a normal form, and a nut movable in the width direction by rotation of the sprocket shaft. A rod attached via a bracket and a bracket fixed to the rod and for moving the rod, a nut for moving the bracket, and a mounting screw for connecting the bracket and the nut are provided. The inside of the main frame and a spherical seat having a convex hemispherical surface on the side that contacts the bracket between the bracket and the nut. An escalator device including a chain disposed at a portion corresponding to a mouth and meshing a power transmission body with a sprocket of a sprocket shaft of a wheelchair step that has been moved during operation of the wheelchair and rotating the sprocket shaft, wherein the rod is movable. The operation of the rod located in the normal state is restricted by a stopper penetrated through a hole provided in the part and fixed to a member erected on the fixed part, and the stopper restricts the operation of the rod located during the operation of the wheelchair. An escalator device for canceling the escalator.