JPH0442304Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a safety device for a wheelchair escalator that can be used both as a normal escalator and a wheelchair escalator.

[Prior art]

The depth of normal escalator steps is approximately 400mm, but although this dimension is sufficient for general passengers to use, it is insufficient for disabled people who use wheelchairs. Dimensions.

For this reason, the tread of any step or the auxiliary tread (hereinafter referred to as the tread) built in below can be freely pulled out in the depth direction (back and forth direction).
Only when physically disabled people use escalators.
Patent application Sho 58-114635 for an escalator that substantially widens the depth of the tread by pulling out the tread toward the rear wheels.
(Unexamined Japanese Patent Publication No. 60-6583), Patent Application No. 120493 (Unexamined Japanese Patent Application No. 1983-120493)
60-12487), patent application No. 1980-198057 (Japanese Patent Application No. 1983-
93089), Japanese Patent Application No. 1983-134340 (Japanese Patent Application No. 61-12584)
No.), Patent Application No. 61-264412 (Japanese Patent Application No. 117891-1983)
Or Japanese Patent Application No. 62-46174 (Japanese Patent Application No. 63-212689)
The applicant has already made many proposals, such as No.

An example of the outline will be explained below using the drawings. Figure 2 is an overall side view of this conventional escalator, where 1 is the escalator body, 2 is the handrail, and 3 is the step for general passengers, and the depth dimension is approximately as described above.
It is 400mm. Reference numeral 4 denotes a handicapped step with an auxiliary footboard 5 built-in below the footboard 6 that can be freely pulled out in the front-rear direction, and 4' is an upper step adjacent to the handicapped step 4, in which the footboard is tiltable and the riser is Adjacent steps configured to be foldable. S1 and S1' are stop switches for disabled people, and when a disabled person wants to use the escalator, if they press these switches S1 and S1',
After the step 4 for the handicapped person is automatically stopped at the entrance, the auxiliary footboard 5 of the step 4 for the handicapped person is pulled out toward the rear wheel side, and the footboard of the adjacent step 4' is tilted. S2 and S2' are activation switches exclusively for the disabled that start the escalator after the disabled person gets on the escalator, and S3 is a recovery switch that restores the handicapped step 4 and the adjacent step 4' to their original state.

FIG. 3 is an enlarged perspective view of the step 4 for disabled persons, and FIG. It is the same approximately 400mm.
In addition, Fig. 3b shows the state in which the auxiliary footboard 5 is pulled out so that a wheelchair can be used by a disabled person. In Fig. 3, 7 is the front wheel, 8 is the rear wheel, and 9 and 90 are the The levers 10, 100 are rollers rotatably attached to levers 10, 100 by pins 9a, 90a, and the levers 10, 100 are connected to shafts 11, 110 rotatably supported via bearings (not shown) on the bottom surface of the step 4 for the disabled. fixed at one end. Reference numerals 51 and 52 are two inclined plates having the function of blocking a wheelchair, and are fixed to a shaft 5c rotatably provided at the rear end of the auxiliary footboard 5, and are normally a part of the riser 40.

FIG. 4 is an enlarged perspective view showing the inside of the step 4 for disabled persons. FIG. 4 a shows the normal case, and FIG.
Fig. 4c shows a state in which the escalator is pulled out and the inclined plates 51, 52 are rotated 90 degrees.
2 shows the state where it is almost vertical, and the same reference numerals as in FIGS. 2 and 3 indicate the same things,
13 is a gear fixed to the other end of the shaft 11, that is, the end opposite to where the lever 10 is provided, and 14 is fixed to one end of a shaft 15 rotatably provided on the underside of the step 4 for the disabled. It is a gear and meshes with gear 13. A pinion 16 is fixed to the other end of the shaft 15 and meshes with a rack 17 provided on the back surface of the auxiliary footboard 5 to form a rack and pinion mechanism. 18 is a gear fixed to the other end of the shaft 110, that is, the end opposite to where the lever 100 is provided, and 19 is fixed to one end of a shaft 20 rotatably provided on the lower surface of the step 4 for the disabled. It is a gear and meshes with gear 18. 21 is the axis 20
A bevel gear 22 fixed to the other end side is a bevel gear fixed to one end of a shaft 23 rotatably provided inside the handicapped step 4, and meshes with the bevel gear 21. 24 is a chain gear fixed to the other end of the shaft 23, 25 is a chain gear fixed to the center of the shaft 5c of the inclined plates 51 and 52, and 26 is rotatably provided at the center of the front end of the auxiliary tread 5. A chain 27 is wound between the chain gear 25 and the chain gear 25. The chain gear 24 mentioned above is meshed with the chain 27. Parts 61 and 62 of the footboard 6 of the step 4 for the disabled are rotatably supported at one end near the center of the footboard 6 by hinges 61a, 62a, etc., and the other ends, left and right, are convex portions of the auxiliary footboard 5, which will be described later. It is guided and supported via a pin 6a on a guide rail 5b which is provided with an appropriate inclination on the side surface of 5a.

Incidentally, in explaining the present invention, there is no need to specifically describe the details of the adjacent step 4' adjacent above the step 4 for the handicapped, so the explanation will be omitted.

Next, the operation of this device will be explained using the drawings.
First, when a disabled person in a wheelchair comes to the entrance of the lower floor shown in Fig. 2 and presses the stop switch S1 for disabled persons, the limit switch detects, for example, a protrusion provided only on step 4 for disabled persons. A well-known detection mechanism detects when the handicapped step 4 rotates to the lower entrance and stops the escalator. When the handicapped person step 4 stops at the entrance, the lever 10 is first rotated in the direction toward the front of the paper about the shaft 11 in FIG. 4a by the driving device 10D shown in FIG.

This rotational operation of the lever 10 is performed by rotating the pinion 16 counterclockwise around the shaft 15 via the shaft 11, gear 13, gear 14, and shaft 15 as shown in FIG. As shown in b, the auxiliary footboard 5 stored below the footboard 6 is sent out to the rear wheel side. At this time, the auxiliary treadle 5 is pulled out toward the rear wheel while the chain 27 wound between the chain gears 25 and 26 and the chain gear 24 are engaged (the roller 90 is restrained by the drive device 100D). Therefore, the chain gear 24 is in a fixed state.)
Therefore, the chain 27 moves in the direction of the arrow shown in FIG. 4a, and the two inclined plates 51 and 52 rotate 90° clockwise around the shaft 5c to the state shown in FIG. 4b, and the wheelchair Creates enough space for passengers to get in.

Note that the rotation angle of the inclined plates 51 and 52 in this case can also be changed by changing the number of teeth of the chain gears 25 and 26; It can also be changed by operating the lever 100 for a certain period of time so as to rotate the chain gear 24 so that it does not rotate by the lever 27. It is also possible to rotate the auxiliary step board 5 clockwise after it has been pulled out to some extent.

Next, when the wheelchair enters the handicapped person step 4 and presses the handicapped person start switch S2, the drive device 100D moves the lever 100 to the shaft 110.
Rotate it in the direction of the arrow (shown in Figure 4b) around the center. This rotational action of the lever 100 rotates the gear 18 clockwise via the shaft 110 in FIG.
The chain 27 is connected to the fourth chain via the shaft 23 and the chain gear 24.
In order to move in the direction of the arrow in Figure b, the two inclined plates 51 and 52 rotate approximately 90 degrees counterclockwise around the shaft 5c and stop at the position shown in Figure 4c, acting as a wheel stop. . Thereafter, the escalator starts operating in the state shown in FIG. 5, and when the handicapped step 4 reaches the exit of the upper floor, the escalator is automatically stopped. When the handicapped step 4 stops at the exit, the drive device 100D on the upper floor is activated by the lever 1.
00 through the roller 90 and centered around the shaft 110.
Rotate in the direction of the arrow in figure c. This lever 100
The rotational movement of the chain 27 is performed by moving the chain 27 in the direction of the arrow in FIG. The inclined plates 51 and 52 are rotated about 90° clockwise about the shaft 5c to the state shown in FIG. 4b. In this state, a wheelchair can be accessed from a lower floor. Next, when the disabled person presses the recovery switch S3 after getting off the escalator, the drive device 10D on the upper floor rotates the lever 10 via the roller 9 about the shaft 11 in the direction of the arrow in FIG. 4b. This rotational movement of the lever 10 is caused by the shaft 11, gears 13, 14, shaft 15, pinion 16, rack 17.
The auxiliary footboard 5 is retracted below the footboard 6 via. At this time, since the auxiliary footboard 5 is retracted with the chain 27 wound between the chain gears 25 and 26 and the chain gear 24 meshing, the chain 27
moves in the direction of the arrow shown in FIG. 4b, and the inclined plate 5
1 and 52 are rotated approximately 90° counterclockwise around the shaft 5c, and parts 61 and 62 of the tread plate 6 are guided by the guide rail 5b of the auxiliary tread plate 5 and rotated counterclockwise to a horizontal state. Return Completely returns to the same state as the normal step.

In this case as well, depending on how the lever 100 is operated, before the auxiliary treadle 5 is completely stored in the step 4 for the disabled, the erected state of the inclined plates 51 and 52 is returned to the normal state, and then the auxiliary treadle is 5 can also be moved in parallel.

[Problem that the invention attempts to solve]

By the way, in this way, the inclined plate 5 of the auxiliary footboard 5
1 and 52 are driven by a lever 100 and a shaft 110,
Teeth 18, gear 19, shaft 20, bevel gears 21, 22,
This mechanism is achieved by meshing the chain 27 and the chain gear 25 via the shaft 23 and the chain gear 24, and the inclined plates 51, 5 are not only used when a disabled person is using the escalator, but also especially when using a normal escalator.
2 must be prevented from rotating unnecessarily, but regarding this point, for example,
As in No. 109936, a locking mechanism consisting of a ratchet and a disc was installed on the axis of the inclined plate, and
As in No. 127312, a lever is provided on a shaft with a polygonal cross-sectional shape so that it can slide freely in the longitudinal direction of the shaft, and the lever is always restrained by the force of a spring to lock the lever at any rotational position. A method has been proposed.

However, in the former method, the adjustment of the engagement position between the ratchet and the disk is complicated, and the mechanism itself becomes complicated.Also, in the latter method, although the lever itself can be almost certainly locked, it is difficult to lock the inclined plates 51, 52 themselves. Since this is not a device that directly performs
There is a risk that the parts may protrude, which not only interferes with normal escalator operation, but also causes damage to the escalator steps and comb plates, which is extremely dangerous for passengers.

Furthermore, detection of such defects and inappropriate conditions has not been performed in the past.

The present invention has been developed in view of the above points, and aims to provide a safety device that can detect a defective, inappropriate state, or suitable state of an inclined plate using a simple detection device, and can reliably lock the inclined plate. purpose.

[Means for solving problems]

In the present invention, at least one step out of a plurality of steps constituting an escalator is configured such that a tread plate or the like can be freely pulled out in the front and back direction, and the rear end of the tread plate or the like of the step that can be freely pulled out is rotatably attached via a shaft. In the case where the inclined plate is provided, a fitting member is provided on the shaft, and a cylinder is formed in which the fitting member is fitted into the inside of the freely drawable step and restrains the rotation of the shaft when the freely drawable step board, etc. is stored. The cylinder has a built-in detection device that detects when the fitting member is fitted.

[Effect]

With the above configuration, when the auxiliary footboard returns to its original position, it is automatically locked and its condition is automatically checked.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial side view of a step for disabled persons showing an embodiment of the safety device according to the present invention, and FIG. 7 is a circuit diagram showing an embodiment of the safety device according to the present invention. The same reference numerals as in Fig. 6 indicate the same parts, and 30 indicates the shaft 5 of the inclined plates 51 and 52.
A fitting member made of a permanent magnet fixed to c, 31
is a cylinder fixed at a predetermined position on the side where the auxiliary step board 5 moves inside the step 4 for the disabled;
This cylinder 31 has a built-in wire 32 which is well known (as published in the McGraw-Hill Dictionary of Scientific and Technical Terms published by Nikkan Kogyo Shimbun). Then, when the fitting member 30 provided on the shaft 5c of the inclined plates 51, 52 is fitted into the cylinder 31, the inclined plates 51, 52 are configured to form a part of the riser 40. The Wigand wire 32 is a single filament made of ferromagnetic material, and is manufactured to form a specially treated outer surface layer called a shell and a relatively soft inner layer called a core. When this Wigand wire 32 is placed in an external magnetic field with a weak different magnetic polarity, the shell portion retains its initial magnetic polarity while the core portion reverses its magnetic polarity.
It has a characteristic that as the strength of the external magnetic field increases, the magnetic polarity of the shell portion also reverses, and a sharp change in magnetic flux occurs as the direction of magnetization changes. 33 is a detection coil provided so as to surround this Wigand wire 32;
A corresponding voltage pulse is generated based on the Wigand effect (published in the aforementioned McGraw-Hill Dictionary of Scientific and Technical Terms) due to a change in the magnetic polarity of No. 2. The Wigand wire 32 and the detection coil 33 constitute a Wigand module. 34 is a coil connected in series to both ends of the detection coil 33;
Reference numeral 5 denotes a magnetically sensitive switch that is installed near the coil 34 when the handicapped step 4 stops at the entrance/exit of the escalator. When the coil 34 is excited by emitting a voltage pulse and the magnetically sensitive switch 35 is operated, the contact 35a in FIG. 7 is instantaneously closed and the contact 35b is instantaneously opened.

E+ and E- are the power source ships, RY1 is the recovery switch S3 to restore step 4 for the disabled.
RY1a and RY1c are the normally open contacts of the recovery relays, RY1a and RY1c, which are energized when the
2 is a recovery command relay that is energized when voltage is applied to operate the drive device 10D shown in FIG. 4a to retract the auxiliary footboard 5;
RY3 is an abnormality detection relay that is energized when voltage is applied, and when this relay is energized, the escalator cannot be operated. RY3a is its normally open contact, RY4 is the confirmation relay that is energized when voltage is applied, RY4a is its normally open contact, TRY1~
TRY3 is set for a predetermined time each time a voltage is applied.
t ₁ , t ₂ , t ₃ (t ₁ is sufficient time for the recovery switch S3 to be operated and the handicapped step 4 is restored to its original state; t ₂ is for the recovery switch S3 to be operated and the magnetically sensitive switch 35 to be activated) TRY1b and TRY1c are activation delay relays that are energized after _t3 is the time required to notify passengers of the displayed information.TRY1b and TRY1c are activation delay relays.
TRY1 is a time-limited normally closed contact, TRY2a is a time-delayed relay TRY2's normally open contact, TRY3b
is the time-limited normally closed contact of the operation delay relay TRY3,
L1 is a display guidance device that displays an abnormality in the hall or the building manager's room, or both, and notifies the manager and/or escalator users that there is an abnormality when voltage is applied; Then, PS is a return button, which is a display/guidance device that displays on the platform that the auxiliary tread 5 is completely housed within the handicapped step and guides the escalator user.

In this device configuration, when a disabled person finishes using the escalator and presses the recovery switch S3, the recovery relay RY1 is energized through the closed circuit "E+-S3-RY1-E-" and closed by closing the contact RY1c. Circuit “E+-35b-RY1c-TRY1c-
RY2-E-'', the recovery command relay RY2 is energized to operate the drive device 10D shown in FIG. When the recovery command relay RY2 is energized and the contact RY2a is closed, the closed circuit “E+-
Since the recovery relay RY1 is self-held by ``RY1a-TRY1b-RY2a-RY1-E-'', no particular problem occurs even if the recovery switch S3 is immediately opened. Then, by the time a predetermined time _t1 has elapsed after the recovery switch S3 was operated, a series of drive mechanisms that pull back the auxiliary footboard 5 operate normally and the inclined plates 51, 5
When the second fitting member 30 is fitted into the cylinder 31 provided in the step 4 for the disabled, a pulse voltage is induced in the detection coil 33 and the coil 34 based on the Wigand effect of the Wigand wire 32, so that magnetic The contact 35b of the sensitive switch 35 momentarily opens, and the contact 35a momentarily closes. If contact 35b opens even for a moment, the recovery command relay
Even if RY2 is deenergized, the recovery relay RY1 is deenergized by the opening of the contact RY2a, and the contact 35b is immediately closed by the opening of the contact RY1c, the recovery command relay RY2 is not energized again and the fourth
The drive device 10D shown in Figure a is stopped and the auxiliary footboard 5 is
At the same time, the retracting operation of the contact point 35 is completed.
The closed circuit “E+-35a-RY1d-L2 R
Even if the confirmation relay RY4 is energized through "Y4 -E-" and the recovery relay RY1 is immediately de-energized and the contact RY1d is opened, the closed circuit "E+-RY4a-" is activated.
TRY3b−L2 RY4 −E−” displays the display guide device L2.
The escalator user is informed that the auxiliary step board 5 has been completely accommodated within the handicapped step 4. After the predetermined time _t3 has passed, the closed circuit "E+-RY4a-TRY3b-TRY3-E
-” causes the operation delay relay TRY3 to operate,
By opening the contact TRY3b, the voltage to the display guidance device L2 is cut off and the display guidance to the elevator users is completed.

On the other hand, even after the predetermined time _t1 has elapsed since the recovery switch S3 was operated, the inclined plates 51 and 5
If the fitting member 30 of No. 2 does not fit into the cylinder 31 provided in the step 4 for disabled persons as shown in FIG.
Operation delay relay TRY2 is energized by "TRY2-E-", and voltage is applied to display guide device L1 and abnormality detection relay RY3 through closed circuit "E+-TRY2a-PS-L1 RY3-E-" by closing contact TRY2a. , the return button PS is closed by closing contact RY3a.
As long as is not operated, voltage will continue to be applied to the display guide device L1 and will continue to notify the manager etc. that there is an abnormality. When recovery switch S3 is operated and recovery relay RY1 is energized, and time t1, which is sufficient for disabled person step ₄ to return to its original state, has elapsed, operation delay relay TRY1 is energized, and the contact
Opening of contact TRY1c deenergizes recovery command relay RY2 to prevent burnout of drive device 10D shown in Figure 4a, and opening of contact TRY1b causes recovery relay RY1 and operation delay relay TRY1 to be deenergized.
is deenergized, and by opening contact RY1c, operation delay relay TRY2 is also deenergized, and display guide device L1 is deenergized.
Return all relays except the energized circuit to their initial state.

In the above explanation, we have described a wheelchair-use escalator in which the inclined plate normally becomes part of the riser, but this also applies to a wheelchair-use escalator in which the inclined plate becomes part of the tread. Not limited. In addition, in the embodiment, we have described an example in which a Wigand wire was used to detect the appropriate position of the auxiliary footboard, but this is because it is convenient to be able to obtain an output signal without requiring a power source. Yes, and if this condition is met, a different detection device may of course be used.

[Effect of idea]

As mentioned above, the present invention has a step that can be modified to be used as both a normal escalator and a wheelchair escalator, and is equipped with a lock mechanism to ensure that the normal escalator condition can be maintained. It detects whether the tread has returned to its proper position without using a power source, and if there is an abnormality, the escalator cannot be operated. This prevents damage to escalator equipment and passenger safety due to operation in an incompletely stowed state. There is no risk of damaging the Furthermore, if there is an abnormality, it is displayed and immediately notified to the administrator, so that it is possible to quickly respond to the abnormality. Furthermore, if the treadle has returned to its proper position, the escalator user can be informed that it is normal so that they can use the escalator with peace of mind.

[Brief explanation of drawings]

Fig. 1 is a partial side view of a step for the handicapped showing an embodiment of the safety device according to the present invention, Fig. 2 is an overall side view of a conventional escalator, and Fig. 3 is an enlarged perspective view of the conventional step for the handicapped. Fig. 4 is an internal transparent perspective view of a conventional step for the handicapped, Fig. 5 is a diagram showing a state in which a handicapped person is using the conventional escalator, Fig. 6 is an explanatory diagram for explaining the problems of the conventional device, FIG. 7 is a circuit diagram showing an embodiment of the safety device according to the present invention, and FIG. 8 is an explanatory diagram for explaining the operation of the device according to the present invention. 4... Step for the disabled, 5... Auxiliary step board, 5
c... shaft, 6... treadle, 51, 52... inclined plate,
30... Fitting member, 31... Cylinder, 32...
Wigand wire, 33...Detection coil, 34...
...Coil, 35...Magnetic sensitive switch, 40...
Liza.

Claims (1)

[Claims for Utility Model Registration] (1) At least one of the plurality of steps constituting the escalator is constructed so that the tread plate, etc. can be freely pulled out in the front and back direction, and the rear end of the tread plate, etc. of the step that can be freely pulled out is provided with a shaft. A fitting member is provided on the shaft, and the fitting member is provided when the drawable footboard etc. is stored inside the drawable step. 1. A safety device for a wheelchair-use escalator, characterized in that a cylinder is provided which is fitted into the cylinder to restrict the rotation of the shaft, and the cylinder has a built-in detection device that detects when the fitting member is fitted. (2) The wheelchair escalator according to claim 1, wherein the inclined plate is used as a part of the riser in normal times, as a step board when getting on and off the wheelchair, and as a car stop when a passenger is using the wheelchair. safety equipment. (3) The detection device is a Wigand module consisting of a bistable magnetic Wigand wire having two regions and a detection coil surrounding the Wigand wire. A safety device for a wheelchair escalator as described in Scope 1.