JP2001151450A - Escalator with steps for wheelchair - Google Patents

Abstract

(57) [Problem] To provide an escalator device with a wheelchair step that can transfer the wheelchair step normally without causing an abnormality when the wheelchair step transmission mechanism is driven by a main frame driving device. A holding rail (30) is provided above a wheel (8) of a wheelchair step (12) moving in a main frame (1). Then, the upward displacement of the wheelchair step 12 due to the driving reaction force generated by the engagement between the transmission mechanism 13 of the wheelchair step 12 and the drive device 24 when the drive device 24 mounted on the main frame 1 is operated is suppressed. For this reason, the wheelchair steps 12 are raised or abnormal vibration is generated, and the wheelchair steps 1
This prevents a problem that the transformation operation for normal movement of the wheel 2 and the formation of the wheelchair loading surface 23 becomes unstable. Thereby, the operation reliability of the wheelchair user in the transport operation is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator with a step for a wheelchair, which is usually disposed between steps and provided with an operating mechanism and forms a wheelchair loading surface when necessary.

[0002]

2. Description of the Related Art FIGS.
FIG. 7 shows a conventional wheelchair-equipped escalator with a step shown in JP-A-71083. FIG. 12 is a side view of a wheelchair with a stepped escalator conceptually showing a transfer state of the wheelchair, and FIG. FIG. 14 is an enlarged view of the lower end portion, and FIG. 14 is a view corresponding to FIG. 13 for explaining the operation of the drive mechanism provided on the main frame and the operation mechanism of the wheelchair step. In the drawing, 1 is a main frame of an escalator provided at an inclination, 2 is a lower end of the main frame 1, 3 is an upper end of the main frame 1, 4 is a lower end 2 and an upper end 3
These are the entrances provided respectively.

Reference numeral 5 denotes a comb plate provided at the edge of the entrance 4 at the longitudinal center side of the main frame 1, and 6 denotes an endless conveyor belt which circulates and moves within the main frame 1, and includes a number of normal steps 7 and The wheelchair steps described below, which are arranged between the steps 7, are connected by a step chain. Reference numeral 8 denotes a front wheel, and 9 denotes a rear wheel, which is provided with a normal step 7 and a wheelchair step, respectively. 10 is a front wheel rail provided on the main frame 1 and arranged along the movement path of the transport belt 6 to guide the front wheel 8;
Reference numeral 11 denotes a rear wheel rail that is provided on the main frame 1 and is arranged along the movement path of the transport belt 6 to guide the rear wheel 9.

[0004] Reference numeral 12 denotes an inclined step board 1 which is normally arranged between the steps 7 and is operated by a transmission mechanism 13 comprising a chain gear.
An inclined wheelchair step 4 having a support 15 having a support mechanism 17 disposed between the steps 7 and disposed at the lower end of the main frame 1 of the inclined wheelchair step 12 and operated by a transmission mechanism 16 composed of a chain gear. The wheelchair steps 18 are usually arranged between the steps 7 and arranged at the lower end side of the main frame 1 of the supporting wheelchair steps 15, and have a car stopper 21 which is operated by a transmission mechanism 20 including a rising stepboard 19 and a chain wheel. It is a step for a wheelchair that is raised.

The normal steps 7 and the inclined wheelchair steps 12
And the like form a transport band 6 and are arranged on a main frame 1 provided with a horizontal portion at both longitudinal ends and an inclined portion at an intermediate portion, and circulate while maintaining a horizontal posture. 22 is a wheelchair, a supporting wheelchair step 1
The tread surface 5 and the ascending tread plate 19 are used as essential parts and are conveyed while being placed on a wheelchair loading surface 23 formed when necessary.

Reference numeral 24 denotes a first drive unit disposed at a lower end 2 and an upper end 3 in the main frame 1, respectively. The first drive unit is composed of an electric elevator 25 and a roller chain provided on the electric elevator 25, and has an endless structure. An electric drive belt 26 is provided which circulates and engages with the transmission mechanism 13 and the like when necessary.

Reference numeral 27 denotes a second drive unit provided at an end of the main frame 1 and located closer to the lower end than the first drive unit 24. The motorized elevator 28 and rollers provided on the motorized elevator 28 are provided. An electric drive belt 29 which is made of a chain and is endless, circulates, and engages with the transmission mechanism 13 and the like when necessary is provided.

The conventional escalator with steps for a wheelchair is constructed as described above, and normally the steps 1 for an inclined wheelchair are normally used.
The inclined tread 14 is held in a horizontal posture with respect to the main body 2. Further, the support mechanism 17 of the supporting wheelchair step 15 is held at the retracted position. In addition, the ascending tread 19 of the ascending tread wheelchair step 18 is held at the lowered position, and the car stopper 21 is held at the retired position. Further, the electric elevator 25 of the first driving device 24 and the electric elevator 28 of the second driving device 27
Is held in the lowered position.

In this state, the ordinary steps 7, the inclined wheelchair steps 12 and the like are circulated in the main frame 1 to carry ordinary passengers. When the wheelchair user is transported, the wheelchair driving described below is performed. In other words, when the wheelchair user is ascending and transporting, the transport belt 6 is driven to ascend, and the inclined wheelchair step 12 is stopped at a position facing the first drive device 24 at the lower end of the main frame 1. Then, the electric elevator 25 of the first driving device 24 moves up to move the electric driving belt 2 as shown in FIG.
6 engages with the transmission mechanism 13 of the inclined wheelchair step 12.

Next, the electric drive belt 26 operates to drive the transmission mechanism 13, and the inclined step board 14 is moved to the inclined wheelchair step 1.
The main body 2 is tilted with respect to the main body 2 and is held in a tilted posture as shown in FIG. Then, the electric elevator 25 is lowered and the transporting belt 6 is operated to move upward, the supporting wheelchair step 15 faces the first driving device 24, and the ascending stepboard wheelchair step 18
Is stopped at a position facing the second driving device 27.
Next, the electric elevator 25 of the first driving device 24 is raised, and as shown in FIG.
5 is engaged with the transmission mechanism 16.

An electric lift 28 of the second drive unit 27
Rises and engages with the transmission mechanism 20 of the stepping wheelchair step 18, and raises the stepping plate 19 of the stepping wheelchair 18.
To the position corresponding to the tread surface of the adjacent supporting wheelchair step 15. Then, the electric driving belt 26 of the first driving device 24
Operates to drive the transmission mechanism 16, and the supporting mechanism 17 of the supporting wheelchair step 15 protrudes and the raised stepboard wheelchair step 1 is raised.
8 is fitted to the ascending tread 19. This results in the state shown in the center of FIG.

In this state, the wheelchair 22 is placed on the wheelchair loading surface 23 which is formed when necessary with the tread surface of the supporting wheelchair step 15 and the raised tread 19 as a main part. Next, the electric driving belt 29 of the second driving device 27 operates to drive the transmission mechanism 20 of the step 18 for the ascending tread wheelchair, and the vehicle stopper 21
Is arranged in the ascending position. Thereby, the wheelchair loading surface 2
The movement of the wheelchair 22 on 3 in the direction of the lower end 2 of the main frame 1 is prevented.

When the transport belt 6 is operated to ascend, the ascending steps 19 held by the supporting wheelchair steps 15 by the supporting mechanism 17 are moved up together with the supporting wheelchair steps 15 by the ascending steps of the supporting wheelchair steps 15. I do. For this reason, the wheelchair 22 placed on the wheelchair loading surface 23 while the wheelchair loading surface 23 is maintained is transported upward as shown in FIG.

[0014]

In the conventional escalator with steps for a wheelchair as described above, for example, when the electric drive belt 26 of the first drive unit 24 is engaged with the transmission mechanism 13 of the steps 12 for the inclined wheelchair, That is, the electric drive belt 26
And the chain gear forming the transmission mechanism 13 mesh with each other, and the two move relative to each other to generate a transmission operation.

At this time, since an upward component force acts due to the engagement between the two, the chain gear is pushed up with respect to the roller chain. Thereby, the step 12 for the inclined wheelchair is
Normal movement of the wheelchair steps due to the lifting of the wheelchair steps, abnormal vibration of the wheelchair steps, etc.
There is a problem that the transformation operation for forming the wheelchair loading surface 23 is hindered.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. When a drive mechanism provided on a main frame drives a wheelchair step transmission mechanism, the wheelchair step is maintained in a normal state. An object of the present invention is to obtain an escalator device with a step for a wheelchair driven for a wheelchair.

[0017]

In the escalator with steps for a wheelchair according to the present invention, a main frame having a horizontal portion at both longitudinal ends and an inclined portion at an intermediate portion, and a large number of steps are usually connected to form an endless. The transport belt is arranged on the main frame, and the normal steps circulate and move along a predetermined path while maintaining a horizontal posture, and are arranged between these normal steps to form a part of the transport band, and the mounted operation is performed. A wheelchair step that is transformed through the operation of the mechanism to form a wheelchair loading surface, and is provided near the longitudinal end of the main frame and rises when necessary to engage with the transmission mechanism of the operating mechanism to drive the transmission mechanism And a displacement of the wheelchair step caused by a driving reaction force of a transmission mechanism that is provided on the main frame, is disposed on the wheel of the wheelchair step along a predetermined path of the transport belt, and is driven by the driving apparatus. Holding rail and .

Further, in the escalator device with steps for a wheelchair according to the present invention, a main frame having horizontal portions at both longitudinal end portions and an inclined portion at an intermediate portion, and a large number of normal steps are connected to each other to form an endless shape. A transport belt which is arranged on a frame and in which a normal step circulates and moves along a predetermined path while maintaining a horizontal posture, a drive device provided near a longitudinal end of the main frame and which rises and operates when necessary, and a front wheel And a rear wheel is provided, which is usually disposed between steps and forms a part of the transport belt, and the transmission mechanism of the equipped operating mechanism is transformed by being engaged with and driven by the raised drive device. The wheelchair loading surface is configured, and the weight and the center of gravity that generate a larger moment than the moment about the front wheel axis and the rear wheel axis due to the upward vertical force generated by the driving reaction force at the time of driving by engagement with the driving device are set. Wheelchair And the step is provided.

In the escalator with steps for a wheelchair according to the present invention, a step for a wheelchair having a center of gravity located at a position corresponding to the center of a transmission mechanism driven by being engaged with a driving device is provided. Further, a wheelchair step having a weight greater than an upward vertical force generated by a driving reaction force when the transmission mechanism is driven is provided.

Further, in the escalator with steps for a wheelchair according to the present invention, the horizontal distance L1 from the center of the front wheel to the center of gravity, the upward vertical force f, the horizontal distance from the center of the transmission mechanism to the center of the front wheel. 11, the horizontal center distance L between the front and rear wheels and the weight W of the wheelchair step, W
> (11 / L1) × f, and W> [(L−1
1) / (L−L1)] × f, and an additional weight is provided at a position corresponding to the center of gravity of the wheelchair step.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 4 are views showing an example of an embodiment of the present invention. FIG. 1 is a side view of a lower end portion of a main frame of an escalator with a step for a wheelchair, and FIG. 1 corresponding to FIG. 1 for explaining the operation of the drive mechanism and the operation mechanism of the wheelchair step in FIG. 3, FIG. 3 is an enlarged longitudinal side view of the first drive unit in FIG. 2, and FIG.
It is a longitudinal side enlarged view of the 2nd drive device part of FIG.

Except for FIGS. 1 to 4, an escalator device with a step for a wheelchair is configured similarly to FIGS. 12 to 14 described above. In the figure, 1 is a main frame of an escalator provided at an inclination, 2 is a lower end of the main frame 1, 3 is an upper end of the main frame 1, 4 is an entrance provided at a lower end 2 and an upper end 3, respectively. Reference numeral 5 denotes a comb plate provided at an edge of the entrance 4 on the longitudinal center side of the main frame 1.

Reference numeral 6 denotes a transport belt which is endless and circulates and moves within the main frame 1. The transport belt 6 comprises a number of normal steps 7 and wheelchair steps which will be described later arranged between the normal steps 7, are connected by a step chain. Have been. Reference numeral 8 denotes a front wheel, and 9 denotes a rear wheel, which is provided with a normal step 7 and a wheelchair step, respectively. Reference numeral 10 denotes a front wheel rail that is provided on the main frame 1 and is arranged along the movement path of the transport belt 6 and guides the front wheel 8;
Reference numeral 11 denotes a rear wheel rail that is provided on the main frame 1 and is arranged along the movement path of the transport belt 6 and guides the rear wheel 9.

Reference numeral 12 denotes an inclined wheelchair step, which is provided with an operating mechanism which is disposed between the ordinary steps 7 and which is operated by a transmission mechanism 13 composed of a chain gear, that is, an inclined step board 14. Reference numeral 15 denotes a supporting wheelchair step, which is disposed between the normal steps 7 and is disposed at the lower end side of the main frame 1 of the inclined wheelchair step 12, and is operated by a transmission mechanism 16 composed of a chain gear, that is, a supporting mechanism 17, Provided.

The support mechanism 17 is provided with a rack 171 and has a gear mechanism 172 provided on the shaft of the transmission mechanism 16.
And move forward and backward by the operation of the transmission mechanism 16. Reference numeral 18 denotes an ascending step wheelchair step, which is disposed between the normal steps 7 and disposed at the lower end side of the main frame 1 of the supporting wheelchair step 15, and a transmission mechanism 2 including an ascending step board 19 and a chain gear.
An operating mechanism that operates by zero, that is, a vehicle stopper 21 is provided.

It should be noted that the normal steps 7 and the inclined wheelchair steps 12 are used.
And the like form a transport band 6 and are arranged on a main frame 1 provided with a horizontal portion at both longitudinal ends and an inclined portion at an intermediate portion, and circulate while maintaining a horizontal posture. 22 is a wheelchair, a supporting wheelchair step 1
The tread surface 5 and the ascending tread plate 19 are used as essential parts and are conveyed while being placed on a wheelchair loading surface 23 formed when necessary.

Reference numeral 24 denotes a first drive unit disposed at the lower end 2 and the upper end 3 in the main frame 1, respectively. The first drive unit comprises an electric lift 25 and a roller chain provided on the electric lift 25, and is formed endless. An electric drive belt 26 is provided which circulates and engages with the transmission mechanism 13 and the like when necessary.

Reference numeral 27 denotes a second drive unit provided at an end of the main frame 1 and located closer to the lower end than the first drive unit 24. The motorized elevator 28 and rollers provided on the motorized elevator 28 are provided. An electric drive belt 29 which is made of a chain and is endless, circulates, and engages with the transmission mechanism 13 and the like when necessary is provided.

Numeral 30 denotes a front wheel holding rail, which is provided on the main frame 1 and is arranged along the moving path of the conveyor belt 6 and has a normal step 7 above the first driving device 24 and the second driving device 27. , Etc., in a range corresponding to the moving section of the front wheel 8. Further, a slight gap is formed above the rolling surface of the front rolling wheel 8 so as to be opposed to each other to prevent abnormal upward displacement of the front rolling wheel 8.

Numeral 31 denotes a rear wheel pressing rail, which is provided on the main frame 1 and is arranged along the moving path of the transport belt 6, and the normal step 7 above the first driving device 24 and the second driving device 27, etc. Is installed in a range corresponding to the moving section of the rear wheel 9. Further, a slight gap is formed above the rolling surface of the rear wheel 9 so as to be opposed to the rear wheel 9 to prevent abnormal upward displacement of the rear wheel 9.

In the escalator with steps for a wheelchair constructed as described above, the inclined tread plate 14 is held in a horizontal position with respect to the main body of the inclined wheelchair steps 12 in a normal state. Further, the support mechanism 17 of the supporting wheelchair step 15 is held at the retracted position. In addition, the ascending tread 19 of the ascending tread wheelchair step 18 is held at the lowered position, and the car stopper 21 is held at the retired position.

Further, the electric lift 2 of the first drive unit 24
The electric lifting platform 28 of the fifth and second driving devices 27 is held at the lowered position. Then, the electric driving band 2 of the second driving device 27
An electric drive belt such as 9 and a transmission such as a transmission 16 of the supporting wheelchair step 15 are arranged as shown in FIG.

In such a state, the transport belt 6 including the normal steps 7 and the steps 12 for inclined wheelchairs is circulated in the main frame 1 to carry ordinary passengers. When the wheelchair user is transported, the wheelchair driving described below is performed. That is,
When the wheelchair user ascends and conveys, the conveyor belt 6 is driven up and the inclined wheelchair step 12 is stopped at a position facing the first driving device 24 at the lower end of the main frame 1. Then, the electric elevator 25 of the first driving device 24 is raised, and the electric driving belt 26 is engaged with the transmission mechanism 13 of the inclined wheelchair step 12 as shown in FIG.

Next, the electric drive belt 26 is operated to drive the transmission mechanism 13 of the inclined wheelchair step 12, and the inclined step board 1 is driven.
4 is inclined with respect to the main body of the step 12 for a wheelchair.
Is held in an inclined posture as shown in FIG. The transmission mechanism 1
The state of the step 12 for a wheelchair when the 3 is driven is
This is the same as when the transmission mechanism 16 of the supporting wheelchair step 15 described later is driven. Then, the electric elevator 25 is lowered and the transport belt 6 is operated to move upward, the supporting wheelchair step 15 faces the first driving device 24, and the ascending step wheelchair step 18
Is stopped at a position facing the second driving device 27.

Next, the electric elevator 25 of the first drive unit 24
And the electric drive belt 26 engages with the transmission mechanism 16 of the supporting wheelchair step 15 as shown in FIG. Then, the electric drive belt 26 operates to drive the transmission mechanism 16 of the supporting wheelchair step 15, and the support mechanism 17 moves forward. Further, when the transmission mechanism 16 is driven, an engagement between the electric drive belt 26 and the transmission mechanism 16, that is, an upward component force due to meshing between the roller chain and the chain gear acts, so that the chain gear is applied to the roller chain. Is pushed up.

However, in this state, as shown in FIG. 3, the abnormal upper displacement of the front roller 8 is prevented by the front roller pressing rail 30, and the upper abnormal movement of the rear roller 9 is prevented by the rear roller pressing rail 31. Displacement is prevented. Therefore, it is possible to prevent the supporting wheelchair steps 15 from being lifted up or generating abnormal vibrations, thereby preventing the normal movement of the supporting wheelchair steps 15 and the transformation operation for forming the wheelchair loading surface 23 from occurring. can do.

The electric lift 28 of the second driving device 27
Rises and engages with the transmission mechanism 20 of the stepping wheelchair step 18 to raise the stepping plate 19 of the stepping wheelchair step 18,
Pushing up to the position corresponding to the tread surface of the adjacent supporting wheelchair step 15 results in the state shown in FIG. And the first drive device 2
The supporting mechanism 17 of the supporting wheelchair step 15 activated by the operation of the electric drive belt 26 of FIG.
Is fitted to the raised ascending tread 19.

The support mechanism 17 in the state shown in FIG.
Is fitted to the ascending tread 19, the supporting wheelchair step 1
The wheelchair 22 is placed on the wheelchair loading surface 23 formed when necessary with the tread surface 5 and the raised tread 19 as essential parts. Next, the electric driving band 29 of the second driving device 27 operates, the transmission mechanism 20 of the step 18 for the ascending treadle wheelchair is driven, and the wheel stopper 21 is arranged at the ascending position. State. The state of the step 18 for the raised wheelchair wheelchair when the transmission mechanism 20 is driven is the same as the state when the transmission mechanism 16 of the support wheelchair step 15 is driven.

When the transport belt 6 is raised, the ascending steps 19 held by the supporting wheelchair steps 15 by the supporting mechanism 17 are moved up together with the supporting wheelchair steps 15 by the upward movement of the supporting wheelchair steps 15. I do. Thus, the wheelchair loading surface 23 is maintained, and the wheelchair loading surface 2 is maintained.
The wheelchair 22 placed on the wheelchair 3 is transported upward as shown in FIG.

As described above, for example, when the electric driving band 26 of the first driving device 24 is engaged with the transmission mechanism 16 of the supporting wheelchair step 15, that is, the roller chain forming the electric driving band 26 and the transmission mechanism 16 Are engaged with each other, and the two gears relatively move to generate a transmission operation.

At this time, since an upward component force acts due to the engagement between the two, the chain gear is pushed up with respect to the roller chain. However, in this state, the front rolling wheel holding rail 30 prevents the front wheel 8 from being abnormally displaced upward, and the rear wheel pressing rail 31 prevents the rear wheel 9 from being abnormally displaced upward.

Accordingly, the wheelchair steps such as the support wheelchair steps 15 are raised or abnormal vibrations are generated, so that the normal movement of the wheelchair steps and the transformation operation for forming the wheelchair loading surface 23 are hindered. Can be prevented from occurring. Therefore, the transport operation of the wheelchair user can be reliably performed with high operation reliability.

In the embodiment shown in FIGS. 1 to 4,
When the position of the transmission mechanism of the wheelchair step is arranged near the rear wheel 9, the operation in the embodiment of FIGS. 1 to 4 can be obtained by providing only the rear wheel pressing rail 31. . Further, when the position of the transmission mechanism of the wheelchair step is arranged near the front wheel 8, the operation in the embodiment of FIGS. Obtainable.

Embodiment 2 5 to 10 are views showing an example of another embodiment of the present invention. FIG. 5 is a side view of a wheelchair step, and FIG. FIG. 6 is an enlarged view of a main part of FIG. 5, FIG. 7 is an equivalent view of FIG. 5, showing a second engagement state next to the first engagement state of FIG. 5, and FIG. FIG. 9 is an enlarged view of a main part, FIG. 9 is a view corresponding to FIG. 5 showing a third engagement state next to the second engagement state of FIG. 7, and FIG. 10 is an enlarged view of the main part of FIG. Except for FIGS. 5 to 10, an escalator device with a step for a wheelchair is configured similarly to the embodiment of FIGS. 1 to 4 described above.

In the figure, reference numeral 120 denotes a wheelchair step such as the above-described inclined wheelchair step 12, and 130 denotes a wheelchair step 12.
This is a transmission mechanism including a chain gear provided at 0, and is provided similarly to the operation mechanism 13 of the inclined wheelchair step 12 and the like.
131 is the tooth of the transmission mechanism 130, 80 is the wheelchair step 12
0 is a front wheel, 90 is a rear wheel of the wheelchair step 120,
Reference numeral 32 denotes a center of gravity of the wheelchair step 120, and reference numeral 260 denotes an electric driving band formed of a roller chain, which is provided in the same manner as the electric driving band 26 of the first driving device 24 described above. Reference numeral 261 denotes a roller for an electric driving band.

[0046] Further, L is the horizontal distance of the front rotary wheel 80 and the rear rolling wheel 90, L ₁ is a front rotary wheel 80 and the horizontal distance of the center of gravity 32 located, L ₂ is a horizontal center of gravity 32 located and the rear rolling wheel 90 Distance, l
₁ is the horizontal distance between the front wheel 80 and the transmission mechanism 130, l
₂ is the horizontal distance between the position of the transmission mechanism 130 and the rear wheel 90, a
0 is a position at which the specific roller 261 of the electric drive belt 260 engages with the teeth 131 of the transmission mechanism 130 and the front wheel 80
The horizontal distance b0 is the horizontal distance according to La-a0 described above.

Further, a is a horizontal distance between the position where the specific roller 261 of the electric drive belt 260 is engaged with the teeth 131 of the transmission mechanism 130 and the horizontal distance of the front wheel 80, b is a horizontal distance by the aforementioned La, a1 is a specific roller 2 of the electric driving belt 260
The end distance of the engagement between the gear 61 and the teeth 131 of the transmission mechanism 130 and the horizontal distance of the front rolling wheel 80, and b1 is the horizontal distance according to the aforementioned La-a1. Arrow A indicates the driven transmission mechanism 13
The rotation direction of 0 and W is the weight of the wheelchair steps 120.

In the escalator device with a step for a wheelchair configured as described above, the step 120 for a wheelchair faces the first driving device 24 described above, and the transmission mechanism 130 and the electric driving band 260 engage to electrically drive. The belt 260 drives the transmission mechanism 130. Then, through the operation of the transmission mechanism 130, the operation mechanism such as the inclined tread plate 14 is moved to the wheelchair loading surface 23.
Transforms to form.

The transmission mechanism 130 and the electric drive belt 26
Assuming that the operating torque around the axis of the transmission mechanism 130 required for the transformation operation due to the relative movement of 0 is T and the pitch circle diameter of the transmission mechanism 130 is D, the electric drive band 260
The tangential force F of the pitch circle of the transmission mechanism 130 transmitted from the transmission mechanism is expressed by the following equation 1.

F = 2T / D (formula 1)

At this time, as shown in FIG.
0 of the electric drive belt is engaged with the teeth 131
If the angle between the contact direction force F and the tooth surface normal force N is α, the tooth surface normal force N received from 61 is expressed by the following equation (2).

N = F / cosα = 2T / (D × cosα) (Equation 2)

The tooth surface orthogonal force N and the angle α are shown in FIG.
10, the tooth surface orthogonal force N0 and the angle α0 at the beginning of the engagement of the specific roller 261 of the electric drive belt 260 and the teeth 131 of the transmission mechanism 130, and the electric drive band 26 shown in FIG.
0 specific roller 261 and teeth 131 of the transmission mechanism 130
At the end of meshing between the tooth surface and the normal force N1 and α1.

In FIG. 8, the wheelchair step 12 is formed by the tooth surface orthogonal force N and the angle β between the tooth 131 and the vertical line passing through the contact point of the roller 261.
The vertical force f that raises 0 is expressed by the following equation 3.

F = N × cos β = 2T × cos β / (D × cos α) (Equation 3)

Note that the angle β is the electric driving band 26 shown in FIG.
0 specific roller 261 and teeth 131 of the transmission mechanism 130
At the beginning of the meshing with the specific roller 261 and the transmission mechanism 130 of the electric drive belt 260 shown in FIG.
And the angle β1 at the end of the meshing of the teeth 131 of FIG.

Also, in FIG.
60 specific rollers 261 and teeth 13 of the transmission mechanism 130
The vertical force f acting on the wheelchair step 120 at the position of the horizontal distance a between the position where the first wheel 1 is engaged and the front wheel 80.
Torque M generated around the front roller 80 axis
1 becomes the following equation 4.

M1 = f × a = 2T × a × cos β / (D × cos α) (Equation 4)

Note that the distance a is the electric driving band 26 shown in FIG.
0 specific roller 261 and teeth 131 of the transmission mechanism 130
At the beginning of the engagement with the distance a1 at the end of the engagement of the specific roller 261 of the electric drive belt 260 and the teeth 131 of the transmission mechanism 130 shown in FIG.

The weight W of the wheelchair step 120, the center of gravity 32 of the wheelchair step 120 and the front wheel 80
At the horizontal distance L1 between the front wheel 80 and the weight W
The rotational moment M2 generated around the axis is represented by the following Expression 5.

M2 = W × L1 (Equation 5)

The vertical force f acting on the wheelchair step 120 causes a rotational moment M around the front wheel 80 axis.
When the rotational moment M2 around the front wheel 80 axis due to the weight W of the wheelchair step 120 is larger than 1, that is, when M2> M1, the rear wheel 90 of the wheelchair step 120 does not rise. Therefore, the following Expression 6 is obtained from Expressions 4 and 5.

W × L1> f × a = 2T × a × cos β / (D × cos α) (Equation 6)

Similarly, the electric drive belt 26 shown in FIG.
0 specific roller 261 and teeth 131 of the transmission mechanism 130
The rotational moment M3 generated around the axis of the rear wheel 90 by the vertical force f acting on the wheelchair step 120 at the position where the front wheel 80 is engaged and the position of the horizontal distance b of the front wheel 80 is expressed by the following equation (7).

M3 = f × b = 2T × b × cos β / (D × cos α) (Equation 7)

The horizontal distance b is determined by the specific roller 261 of the electric driving belt 260 and the tooth 1 of the transmission mechanism 130 shown in FIG.
The distance b0 at the start of the engagement of the gear 31 with the specific roller 261 and the transmission mechanism 13 of the electric drive belt 260 shown in FIG.
0 and the distance b1 at the end of the engagement of the teeth 131.

At the weight W of the wheelchair step 120 and the horizontal distance L2 between the center of gravity 32 of the wheelchair step 120 and the rear wheel 90, the rotational moment M4 generated around the axis of the rear wheel 90 due to the weight W becomes Equation 8 shown below is obtained.

M4 = W × L2 (Equation 8)

The vertical force f acting on the wheelchair step 120 causes the rotational moment M around the rear wheel 90 axis.
When the rotational moment M4 around the rear wheel 90 axis due to the weight W of the wheelchair step 120 is larger than 3, that is, when M4> M3, the rear wheel 90 of the wheelchair step 120 does not float. Therefore, the following Expression 9 is obtained from Expressions 7 and 8.

W × L2> f × b = 2T × b × cos β / (D × cos α) (Equation 9)

Assuming that the number of teeth 131 of the transmission mechanism 130 is n, the angular pitch p between the teeth 131 is given by the following equation (1).
It becomes 0.

P = 360 ° / n (Equation 10)

Therefore, α is α0 to α while the transmission mechanism 130 rotates p from the time when the teeth 131 of the transmission mechanism 130 start to mesh with the roller 261 and the time when the meshing ends.
1, β is β0 to β1, a is a0 to a1, b is b0 to b1
Each change.

However, the weight W of the wheelchair step 120 and the weight of the wheelchair step 12 are set so as to always satisfy the equations (6) and (9).
0, the horizontal distance L1 between the center of gravity 32 and the front wheel 80, the center of gravity 3
The horizontal distance L2 between the rear wheel 2 and the rear wheel 90 is selected. That is, when the transmission mechanism 130 is driven by the electric drive belt 260, the vertical force f for lifting the wheelchair steps 120
So that the moment around the front wheel 80 axis and the rear wheel 90 axis due to the weight W of the wheelchair step 120 becomes larger than the moment about the front wheel 80 axis and the rear wheel 90 axis due to: The weight W of the wheelchair steps 120 and the position of the center of gravity 32 are selected.

With such a configuration, the following operation can be obtained. That is, the wheelchair steps 120 face the above-described first drive device 24 and the like, and the transmission mechanism 130 is driven by engaging with the electric drive band 260, so that the transmission mechanism 130
Through the operation described above, the operation mechanism such as the inclined tread plate 14 is transformed to form the wheelchair loading surface 23. At this time, the front wheel 80 and the rear wheel 90 of the wheelchair step 120 are lifted or abnormal vibration is generated, so that the wheelchair step 12
It is possible to prevent a problem that the transformation operation for moving the wheel 0 and forming the wheelchair loading surface 23 is hindered. For this reason,
The transport operation of the wheelchair user can be reliably performed by the high operation reliability.

Embodiment 3 In the embodiment of FIGS. 5 to 10 described above, the wheelchair steps 120 will be described below.
Are set such as the weight W, the position of the center of gravity 32, and the distance. That is, the position of the center of gravity 32 is made substantially coincident with the center of the transmission mechanism 130, and the weight W of the wheelchair steps 120 is smaller than the vertical force f acting on the wheelchair steps 120 when the transmission mechanism 130 is driven by the electric drive belt 260. Is configured to be large.

Since the position of the center of gravity 32 of the wheelchair step 120 substantially coincides with the center of the transmission mechanism 130, the above-mentioned distance L1 becomes the following equation 11, and the distance L2 becomes the following equation 12. L1 = 11 (Equation 11) L2 = 12 (Equation 12)

The transmission mechanism 13 of the wheelchair step 120
The maximum value of the vertical force f acting on the wheelchair step 120 when 0 is driven by the electric drive zone 260 is defined as fmax.
And a wheelchair step 12 larger than the vertical force fmax.
The weight W of 0 is expressed by the following equation 13. W> fmax (Equation 13)

Since the meshing position between the teeth 131 of the transmission mechanism 130 and the roller 261 of the electric driving band 260 can be regarded as substantially coincident with the center position of the transmission mechanism 130, the following equations (14) and (14) are used. 15 is established. a ≒ a0 ≒ a1 ≒ 11 (Equation 14) b ≒ b0 ≒ b1 ≒ L2 (Equation 15)

At this time, the rotational moment M2 generated around the front roller 80 axis due to the weight W of the wheelchair step 120 is obtained.
Becomes the following Expression 16 from the above Expression 11. M2 = W × L1 = W × 11 (Equation 16) In addition, when the transmission mechanism 130 of the wheelchair step 120 is driven by the electric drive belt 260, the maximum value of the vertical force f acting on the wheelchair step 120 is represented by fmax. Front wheel 80
Maximum value of rotational moment generated around the axis M1max
Becomes the following Expression 17 from the above Expression 14.

M1max = fmax × 11 (Expression 17) Here, from Expression 13, M2> M1max (Expression 18). Therefore, rear wheel 9 of wheelchair steps 120
0 never rises.

Similarly, a rotational moment M4 generated around the rear wheel 90 axis due to the weight W of the wheelchair step 120 is obtained.
Becomes the following Expression 19 from the above Expression 12. M4 = W × L2 = W × 12 (Equation 19) Further, when the transmission mechanism 130 of the wheelchair step 120 is driven by the electric drive zone 260, the maximum value of the vertical force f acting on the wheelchair step 120 is represented by fmax. Rear wheel 90 by
Maximum value of rotational moment generated around the axis M3max
Becomes the following expression 20 from the expression 15 described above.

M3max = fmax × 12 (Equation 20) Here, the weight W of the wheelchair step 120 is transmitted to the transmission mechanism 130.
Since the maximum value of the vertical force f acting on the wheelchair steps 120 is set to be larger than fmax when is driven by the electric driving band 260, from equation 13, M4> M3max (equation 21). Therefore, front wheel 8 of wheelchair step 120
0 never rises.

The following operation can be obtained by such a configuration. That is, the wheelchair steps 120 face the above-described first drive device 24 and the like, and the transmission mechanism 130 is driven by engaging with the electric drive band 260, so that the transmission mechanism 130
Through the operation described above, the operation mechanism such as the inclined tread plate 14 is transformed to form the wheelchair loading surface 23. Then, the position of the center of gravity 32 of the wheelchair steps 120 is made substantially coincident with the center of the transmission mechanism 130, and when the transmission mechanism 130 is driven by the electric driving band 260, the wheelchair has a greater force than the vertical force f acting on the wheelchair steps 120. The weight W of the step 120 is large.

For this reason, the transmission mechanism 130 is electrically driven
The vertical force f when driven by the
, The front wheel 80 and the rear wheel 90 of the wheelchair step 120 are lifted up or abnormal vibration is generated, and the transformation for the movement of the wheelchair step 120 and the formation of the wheelchair loading surface 23 is performed. It is possible to prevent a problem that the operation is hindered from occurring. Therefore, the transport operation of the wheelchair user can be reliably performed with high operation reliability.

Embodiment 4 FIG. 11 is also a side view of a wheelchair step showing an example of another embodiment of the present invention, and is a diagram showing an engagement state between a transmission mechanism of the wheelchair step and an electric drive band of a driving device, and It is a figure equivalent to FIG. The escalator device with a step for a wheelchair is configured similarly to the embodiment of FIGS. 5 to 10 except for FIG. 11. In the figure, the same reference numerals as those in FIGS.
Is an additional weight, and a bolt 34 is provided inside the wheelchair step 120.
And is arranged at a position corresponding to the center of gravity 32.

Then, in the above-described embodiment of FIGS. 5 to 10, specifications such as the weight W of the wheelchair steps 120, the position of the center of gravity 32, and the distance are set as described below. That is, the vertical force f when the transmission mechanism 130 is driven by the electric drive belt 260, the horizontal distance l1 between the transmission mechanism 130 and the front wheel 80, and the horizontal distance between the front wheel 80 and the rear wheel 90. The distance L is set, and the weight W of the wheelchair step 120 is set as described below.

That is, W> (11 / L1) × f (Expression 22) W> [(L−11) / (L−L1)] × f (Expression 23) Additional weight 3
3 is attached to the position of the center of gravity 32. 5 to 1 described above.
0, the meshing position of the teeth 131 of the transmission mechanism 130 and the roller 261 of the electric driving band 260 is
It is assumed that the position substantially coincides with the center position of the transmission mechanism 130.

In this configuration, the rotational moment M2 generated around the front roller 80 axis due to the weight W of the wheelchair step 120 is: M2 = W × L1> f × 11 (from equation 22) = f × a = M1 ( Equation 14) satisfies Equation 6 described above. Therefore, the transmission mechanism 1
The rear rolling wheel 90 of the wheelchair step 120 does not rise due to the vertical force f when the 30 is driven by the electric drive belt 260.

The rotational moment M4 generated around the rear wheel 90 axis due to the weight W of the wheelchair step 120 is: M4 = W × L2 = W × (L−L1) (L2 = L−L1 from L = L1 + L2) > (L−11) × f (from equation 23) = 12 × f (from L = 11 + 12 12 = L−11) = f × b = M3 (from equation 15)

This satisfies the above equation (9). For this reason, the front rolling wheel 80 of the wheelchair step 120 does not rise due to the vertical force f when the transmission mechanism 130 is driven by the electric drive belt 260. With such a configuration, the following operation can be obtained. That is, the vertical force f when the transmission mechanism 130 is driven by the electric drive belt 260, the horizontal distance l between the transmission mechanism 130 and the front wheel 80.
1. The horizontal distance L is set between the front wheel 80 and the rear wheel 90, and the weight W of the wheelchair step 120 is set as described below.

That is, the additional weight 33 is attached to the wheelchair step 120 so that W> (11 / L1) × f and W> [(L−11) / (L−L1)] × f. Attached to the position of the center of gravity 32. Then, the wheelchair steps 120 are opposed to the above-described first driving device 24 and the like, and the transmission mechanism 130 is driven by being engaged with the electric driving band 260, and the transmission mechanism 130 is driven.
Through the operation described above, the operation mechanism such as the inclined tread plate 14 is transformed to form the wheelchair loading surface 23.

However, at this time, the vertical force f generated when the transmission mechanism 130 is driven by the electric drive band 260
Acts on the wheelchair steps 120, the wheelchair steps 12
0 front wheel 80 and rear wheel 90 are lifted or abnormal vibration is generated, so that the wheelchair steps 120 move.
It is possible to prevent a problem that the transformation operation for forming the wheelchair loading surface 23 is hindered. Therefore, the transport operation of the wheelchair user can be reliably performed with high operation reliability.

[0094]

As described above, according to the present invention, a main frame having a horizontal portion at both longitudinal end portions and an inclined portion at an intermediate portion thereof, and a large number of steps generally connected to each other, are formed endlessly and arranged on the main frame. The normal steps are kept in a horizontal position and are conveyed in a circulating movement along a predetermined path, and the normal steps are arranged between the normal steps and form a part of the conveying band, and are transformed through the operation of the equipped operating mechanism. A wheelchair step that constitutes a wheelchair loading surface, a drive device provided near the longitudinal end of the main frame and raised when necessary to engage with the transmission mechanism of the operating mechanism to drive the transmission mechanism; A holding rail provided along a predetermined route of the transport belt and above the wheel of the wheelchair step, for suppressing the upward displacement of the wheelchair step caused by the driving reaction force of the transmission mechanism driven by the driving device. It is a thing.

Thus, when the driving device is engaged with the transmission mechanism of the wheelchair step, both the driving device and the transmission mechanism are engaged with each other, and the two are relatively moved to generate a transmission operation. However, at this time, an upward component force due to the engagement between the two acts, so that the transmission mechanism is pushed up. Then, in this state, the upper abnormal displacement of the wheel of the wheelchair step is prevented by the holding rail. Therefore, it is possible to prevent a problem that the wheelchair steps are lifted up or abnormal vibration is generated, and the normal movement of the wheelchair steps and the transformation operation for forming the wheelchair loading surface are prevented. Therefore, there is an effect of improving the operation reliability of the wheelchair user in the transport operation.

Further, as described above, the present invention provides a main frame having a horizontal portion at both longitudinal ends and an inclined portion at an intermediate portion.
A number of normal steps are connected to each other and arranged on the main frame in an endless manner, and the normal steps are kept in a horizontal position and circulate on a predetermined path. A drive device that is provided with a front running wheel and a rear running wheel, and that is arranged between normal steps and forms a part of a transport belt, and a driving device in which a transmission mechanism of an installed operating mechanism is raised. Is transformed into a wheelchair loading surface by being driven by being engaged with the driving device, and a moment about the front roller shaft and the rear roller shaft due to an upward vertical force generated by a driving reaction force at the time of driving by engagement with the driving device. And a wheelchair step on which the weight and the position of the center of gravity that generate a larger moment are set.

Then, the wheelchair is designed to generate a larger moment than the moment about the front wheel axis and the rear wheel axis caused by the upward vertical force due to the driving reaction force when the transmission mechanism of the wheelchair step is driven by the driving device. The weight and center of gravity of the step are set. Thereby, abnormal upper displacement of the front wheel and the rear wheel is prevented. Therefore, it is possible to prevent a problem that the wheelchair steps are lifted up or abnormal vibration is generated, and the normal movement of the wheelchair steps and the transformation operation for forming the wheelchair loading surface are prevented. Therefore, there is an effect of improving the operation reliability of the wheelchair user in the transport operation.

As described above, according to the present invention, a wheelchair step having a center of gravity is provided at a position corresponding to the center of a transmission mechanism driven by being engaged with a driving device. A wheelchair step having a weight greater than the upward vertical force generated by the driving reaction force at the time is provided.

The center of gravity of the wheelchair step is set at a position corresponding to the center of the transmission mechanism driven by engagement with the driving device, and the upward vertical force generated by the driving reaction force of the transmission mechanism is set large. You. For this reason, it is possible to prevent a problem that the wheelchair steps are lifted up or abnormal vibration is generated, thereby preventing the normal movement of the wheelchair steps and the transformation operation for forming the wheelchair loading surface.
Therefore, there is an effect of improving the operation reliability of the wheelchair user in the transport operation.

Also, as described above, the present invention provides a horizontal distance L1 from the center of the front wheel to the center of gravity, an upward vertical force f, and a horizontal distance l from the center of the transmission mechanism to the center of the front wheel.
1. The distance L between the horizontal center of the front wheel and the rear wheel and the weight W of the wheelchair step are W> (11 / L1) × f, and W> [(L−11) / ( L-L1)] × f, and an additional weight attached to a position corresponding to the center of gravity of the wheelchair step is provided.

An additional weight of W> (11 / L1) × f and satisfying W> [(L−11) / (L−L1)] × f is applied to the wheelchair step. It is mounted at the center of gravity. As a result, even if the upward vertical force generated by the driving reaction force of the transmission mechanism acts on the wheelchair step, the wheelchair step is raised or abnormal vibration occurs, and the wheelchair step normally moves and the wheelchair is loaded. It is possible to prevent a problem that the transformation operation for forming the surface is hindered. Therefore, there is an effect of improving the operation reliability of the wheelchair user in the transport operation.

[Brief description of the drawings]

FIG. 1 is a view showing Embodiment 1 of the present invention, and is a side view of a lower end portion of a main frame of an escalator with a step for a wheelchair, which is equivalent to FIG. 13 described later.

FIG. 2 is a view corresponding to FIG. 1 for explaining the operation of the drive mechanism and the operation mechanism of the wheelchair step in FIG. 1;

FIG. 3 is an enlarged longitudinal side view of a first driving device shown in FIG. 2;

FIG. 4 is an enlarged longitudinal sectional side view of a second driving device shown in FIG. 1;

FIG. 5 is a view showing the second embodiment of the present invention, and is a side view of the wheelchair step, showing a first engagement state between the transmission mechanism of the wheelchair step and the electric drive belt of the driving device.

FIG. 6 is an enlarged view of a main part of FIG. 5;

FIG. 7 is a view corresponding to FIG. 5, showing a second engagement state following the first engagement state in FIG. 5;

FIG. 8 is an enlarged view of a main part of FIG. 7;

9 is a view corresponding to FIG. 5, showing a third engagement state following the second engagement state of FIG. 7;

FIG. 10 is an enlarged view of a main part of FIG. 9;

FIG. 11 is a view showing a third embodiment of the present invention, and is a side view of a wheelchair step, showing an engagement state between a transmission mechanism of the wheelchair step and an electric drive belt of a driving device, and FIG.

FIG. 12 is a view showing a conventional wheelchair-equipped escalator with a step, and is a side view of the wheelchair-equipped escalator with a conceptual view of a transfer state of the wheelchair.

FIG. 13 is an enlarged view of a lower end portion of the main frame of FIG.

FIG. 14 is a diagram corresponding to FIG. 13 for explaining operations of a drive device provided on the main frame and an operation mechanism of a wheelchair step.

[Explanation of symbols]

1 Main frame, 6 Conveyor belt, 7 Normal step, 8 Front wheel (wheel), 80 Front wheel, 9 Rear wheel (wheel), 9
0 rear wheel, 12 steps for inclined wheelchair (steps for wheelchair), 120 steps for wheelchair, 13 transmission mechanism, 130
Transmission mechanism, 14 inclined steps (operation mechanism), 15 steps for supporting wheelchair (steps for wheelchair), 16 transmission mechanism, 17
Supporting mechanism (operating mechanism), 18 Ascending steps Wheelchair steps (wheelchair steps), 19 Ascending steps (operating mechanism), 20
Transmission mechanism, 21 Wheel stopper (operation mechanism), 23 Wheelchair loading surface, 24 First drive unit (Drive unit), 27 Second drive unit (Drive unit), 30 Front rolling wheel holding rail (Holding rail), 31 Rear part Roller holding rail (holding rail), 32 center of gravity, 33 additional weight, W weight.

Claims (4)

[Claims] 1. A main frame having a horizontal portion at both longitudinal end portions and an inclined portion formed at an intermediate portion, and a plurality of normal steps are connected to each other to form an endless shape and are disposed on the main frame. And a transport belt that circulates and moves along a predetermined route while maintaining a fixed position, and is arranged between these normal steps and forms a part of the transport belt, and is transformed through the operation of an equipped operating mechanism to form a wheelchair loading surface. A wheelchair step, a drive device provided near the longitudinal end of the main frame, rising when necessary and engaging with the transmission mechanism of the operating mechanism to drive the transmission mechanism; and a driving device provided on the main frame. A holding rail arranged along the predetermined path above the rolling wheel of the wheelchair step and for suppressing the upward displacement of the wheelchair step caused by a driving reaction force of the transmission mechanism driven by the driving device. Escalator device with steps for wheelchairs. 2. A main frame having a horizontal portion formed at both longitudinal ends and an inclined portion formed at an intermediate portion thereof, and a large number of ordinary steps are connected to each other to form an endless shape and are disposed on the main frame. A transporting belt that circulates and moves along a predetermined path while maintaining the position, a driving device that is provided near the longitudinal end of the main frame and moves up when necessary, and a front rolling wheel and a rear rolling wheel are provided. It is arranged between steps and forms a part of the transport band, and the transmission mechanism of the equipped operating mechanism is transformed into a wheelchair loading surface by being driven by being engaged with and driven by the raised drive device, A wheelchair step having a weight and a position of the center of gravity in which a larger moment is generated than a moment around the front wheel axle and the rear wheel axle due to an upward vertical force generated by a driving reaction force at the time of driving by the engagement. Escalator with steps for wheelchair apparatus. 3. The wheelchair step is configured such that the center of gravity is located at a position corresponding to the center of a transmission mechanism driven by engaging with a driving device, and the weight of the wheelchair step is determined by the weight of the transmission mechanism. 3. An escalator device with a step for a wheelchair according to claim 2, wherein the escalator is set larger than an upward vertical force generated by a driving reaction force at the time of driving. 4. The horizontal distance L from the center of the front wheel to the center of gravity.
1. An upward vertical force f, a horizontal distance 11 from the center of the transmission mechanism to the center of the front wheel, a distance L between horizontal centers of the front wheel and the rear wheel, a weight W of a wheelchair step, and W >
(11 / L1) × f, and W> [((L-11)
/(L-L1)].times.f, and an additional weight attached to the wheelchair step at a position corresponding to the center of gravity of the wheelchair step. Escalator device.