JPH0986850A - Escalator used for wheelchair in common - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an escalator used for wheelchair in common and which is easy of assembly and can be lightened. SOLUTION: A fan-shaped spur gear is hung down vertically from the center of the pin piercing horizontally the mobile footstep 5a of a wheel stop footstep 5. At the center of the mobile footstep 5a are a pair of support plates hung down vertically, and at the bottom of this support plate a large-diameter spur gear and a small-diameter spur gear are accommodated through a shaft. At the center of the supporting plate is a large-diameter spur gear provided for the shaft, and the upper spur gear and the lower spur gear are engaged with each other. At the wheel stop 6 is a lock hung down vertically, and at the intermediate part of the fixed footstep a stopper 8 is provided. A lock pin 7 provided at the bottom of the lock part 6b is set freely at a stopper 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator, and more particularly, to an escalator for wheelchairs that incorporates a wheelchair step.

[0002]

2. Description of the Related Art FIG. 6 is a schematic left side view showing an example of a conventional wheelchair-equipped escalator, and shows a case where a wheelchair step is located at an oblique portion. In FIG. 6, the induction motor 21 serving as a drive source of the escalator and the induction motor 21 are provided on the upper floor side of the main frame (not shown) that is installed between the upper floor side on the left side and the lower floor side on the right side and is not shown in detail. A speed reducer 22 connected to the induction motor 21 is housed.

On the right side of the speed reducer 22, a large-diameter drive sprocket 23A and a small-diameter pair of sprockets 23B are provided via a shaft (not shown). The right side of the drive chain 26 is wound around the large-diameter drive sprocket 23A, and the left side of the drive chain 26 is wound around a small-diameter sprocket inserted into the output shaft of the speed reducer 22.

A pair of sprockets 23C having the same diameter as the sprockets 23B are also provided at the lower floor end of the main frame (not shown) via a shaft (not shown). These sprockets
The step chain 1 is wound between 23B and 23C.

Incidentally, unillustrated moving handrail drive sprockets are inserted in the unillustrated shafts into which the sprockets 23A and 23B are inserted, and an unillustrated moving handrail drive chain is also wound between these moving handrail sprockets. ing.

Of these, the step chain 1 includes an endless step 2 which is housed inside the main frame along the step chain 1 and connected in a chain shape. Drive wheels are connected via a drive shaft.

The drive wheels are guided by a tread plate rail (not shown) provided inside the main frame, and a guide rail (not shown) dedicated to the wheelchair escalator is provided below the oblique portion of the tread plate rail. ing.

On the upper floor side and the lower floor side of the main frame, step operating devices, which will be described later with reference to FIG. 9, are provided. On the upper part of the main frame, a moving handrail 25 is wound around the upper surface of the balustrade 24 which has not been described in detail.

Between the steps 2 connected endlessly, an inclined step 3 which will be described below with reference to FIGS. 7 and 8, and the inclined step 3
The wheelchair steps, which are composed of a support step 4 connected to the lower floor side and a car stop step 5 connected to the lower floor side of the support step 4, are incorporated.

Of these, the upper inclined step 3 is provided with a movable step 3b in which the lower part of the front end is supported with respect to the drive shaft of the drive wheel in the middle part. An auxiliary wheel (not shown) is provided at the lower end of the movable step 3b, and when the inclined step 3 enters the oblique portion, the auxiliary wheel is lowered to the position of the guide rail, as shown in FIG. Swing to the lower floor and tilt.

A pair of connecting rods 4a are provided on the front surface of the supporting step 4 in the middle part so as to be able to project to the raising surface. The connecting rod 4a is provided before the supporting step 4 enters the oblique portion. Then, it protrudes and projects into the movable step 5a incorporated in the car stop step 5 on the lower floor side.

On the other hand, a movable side step 5a is housed in the car stop step 5 at the lower end so as to be movable up and down.
Is a connecting rod 4 protruding from the support step 4 when entering the oblique portion.
It is lifted up by the ascending movement of the support step 4 and its upper end surface becomes flush with the support step 4, as shown in FIG.

Further, a pair of wheel stopper claws 6 are accommodated in the wheel stopper step 5 as shown in FIG. 9 which will be described later, and when the wheelchair is transferred to the upper surfaces of the movable side step 5a and the support step 4, FIG.
With the step operating device 6 described above, the car stop pawl 6 projects upward from the upper surface of the movable side step 5a as shown in FIG.
The rear wheel of the wheelchair does not fall off the movable step 5a.

FIG. 9 is an enlarged detailed vertical cross-sectional perspective view of the vehicle stop step 5, showing a state before the step operation device 6 is activated at the entrance / exit on the lower floor side. In FIG. 9, a support 12A and a support 12B are symmetrically provided at the left end and the right end (not shown) of the movable step 5a of the car stop step 5 with respect to the lower side of the step surface.

A shaft 13 is inserted into these supports 12A and 12B via a bearing (not shown). A bevel gear 14A is press-fitted into the center of the shaft 13 via a key (not shown).

At the left end and the not-shown right end of the shaft 13, the base end of an L-shaped car stop 16 is press-fitted through a not-shown key. The front end surface 5a1 of the car stop 16 is loosely fitted in the claw hole 5a1 formed at the front end of the movable step 5a, and is located substantially on the same plane.

Inside the movable side step 5a, a stopper 8 formed in a U shape is fixed, and inside the stopper 8, a rack rod 15 laterally provided on the right side of the stopper 8 in FIG. The lock pin 7 protruding from the left end of is loosely fitted.

A bevel gear 14B meshes with the bevel gear 14A described above, and the teeth formed on the side surface of the bevel gear 14B mesh with the teeth of the rack rod 15. The spur gear 10 is press-fitted into the lower end of the shaft of the bevel gear 14B.

At the front end of the movable step 5a, the front end of the fixed step 5b is shown, and at the lower end of the fixed step 5b, the leg 5b1 of the fixed step 5b and the leg 5b are provided.
A rear wheel 11 at the rear end of 1 is shown.

In the wheelchair-equipped escalator in which the wheelchair steps constructed as described above are incorporated, when the vehicle stop steps 5 reach the entrance / exit, the spur gear 10 meshes with a rack (not shown) of the step operating device, and the spur gears are engaged. 10, the rack rod 15 is driven in the right direction in FIG. 9, and the bevel gear 14A is driven in the clockwise direction as viewed from the right side in accordance with the rotation of the spur gear 10.

Then, the lock pin 7 projecting from the left end of the rack 15 comes out of the stopper 8 together with the rack 15 which moves to the right, and the shaft 13 is rotationally driven in the clockwise direction together with the bevel gear 14A, and the car stop 16 is provided. Swings clockwise about the shaft 13. As a result, the tip surface 16a of the bollard 16
Protrudes from the claw hole 5a1 as shown in FIG.

On the other hand, when these wheelchair steps reach the landing gate on the upper floor side from the oblique portion, the step gear operating device 6 on the upper floor side drives the spur gear 10 shown in FIG. The lock pin 7 of the rod 15 is fitted in the stopper 8, and the car stop 16 is swung counterclockwise by the bevel gear 14A and the shaft 13 rotated by the bevel gear 14B, and the tip surface 16a is
It is the same as the upper end surface of the movable side step 5a.

[0023]

However, in the wheelchair-equipped escalator in which the car stop steps constructed as described above are incorporated, since the number of spur gears, racks and bevel gears is large, the construction becomes complicated and it takes time to assemble. Not only this, but these power transmission mechanisms add to the weight of the wheel stop steps. Therefore, an object of the present invention is to provide a wheelchair-equipped escalator that is easy to assemble and can be reduced in weight.

[0024]

A wheelchair-equipped escalator according to a first aspect of the present invention is an inclined step between normal steps connected to an endless chain wound around a main frame and driven by a drive unit. And a wheelchair step provided with a support step and a wheel stop step is connected via a chain, and one side is connected to the movable step of the wheel stop step via a support shaft and is provided on the upper and lower floors of the main frame. In a wheelchair-equipped escalator in which a wheel stop driven by a step operation device and a gear train and the other side swings upward is housed in the wheel stop step, the engagement portion provided on the fixed side step of the wheel stop step and the intermediate point of the wheel stop. A locking portion is provided at a lower end of a locking portion that is vertically provided on the portion, and the locking portion is provided to engage with the engaging portion of the fixed-side step and to escape from the engaging portion by swinging the car stop upward. .

In the wheelchair-equipped escalator according to the second aspect of the present invention, the gear train includes a first spur gear driven by a step operating device, a second spur gear inserted into the support shaft, and a second spur gear. It is characterized by being constituted by a third spur gear provided between the first and second spur gears.

The escalator for wheelchairs according to the third aspect of the present invention is characterized in that the engaging portion has a U-shaped vertical cross section.

The wheelchair-equipped escalator according to a fourth aspect of the present invention is characterized in that the engaging portion is a flat plate having a base end supported by a spring tool.

Furthermore, in the wheelchair-equipped escalator according to the fifth aspect of the present invention, a stopper is provided on the fixed side step of the wheel stop step where the front of the lower end of the wheel stop abuts and is pressed by the lower end of the wheel stop by the restoring force of the spring. It is characterized by

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an escalator for wheelchairs according to the present invention will be described below with reference to the drawings. FIG.
FIG. 9 is a partial right side view showing the first embodiment of the wheelchair-equipped escalator according to the present invention, and is a view corresponding to FIG. 9 shown in the related art and corresponding to claims 1 to 3. FIG.
FIG. 2 is an enlarged detailed view of the AA cross section of FIG. 1.

In FIGS. 1 and 2, stepped shafts 11a are symmetrically fixed to the outside of the left and right side plates 5b1 of the car stop step 5, and drive wheels 11A are shown on the outside of these stepped shafts 11a. Not symmetrically mounted via bearings.

These drive wheels 11A are located on the upper surface of a guide rail (not shown) provided inside the main frame, and the stepped shafts 11a of these drive wheels 11A are connected to the drive chain.

A strip-shaped middle plate 5c is laterally provided between the left and right side plates 5b1 and both ends thereof are fixed to the side plates 5b1.
On the left and right of the upper surface of the central portion of the middle plate 5c, U-shaped stoppers 8 in FIG. 1 and L-shaped stoppers 8 in FIG. 2 are provided symmetrically, and the lower end is welded to the side plate 5b1.

On the upper ends of the left and right side plates 5b1, the lower surfaces on both sides of the movable step 5a are placed. A support shaft 6a is supported between the two sides via a bearing (not shown). In FIG. 1, a pair of square bracket-shaped bollards 6 at the right end in FIG. 1 are inserted into the support shaft 6a, and the support portions 6d are fixed through a key (not shown).

An engaging portion 6 which is vertically provided under the car stopper 6.
A lock pin 7 is projectingly provided on a lower end side surface of b, and the lock pin 7 shows a state before the car stop step 5 moves to a landing entrance on the lower floor side and contacts a step operating device (not shown).
In the above, the stopper 8 is loosely fitted inside. A tip 6c of the car stop 6 is loosely fitted in a square hole formed in the movable-side step 5a.

Rear wheels 11B are attached to the lower ends of the side plates 5b1 of the car stop steps 5, as shown in FIG. At the center of the support shaft 6a, a pair of support plates 5d is vertically provided from the back surface of the step plate of the movable side step 5a. In the central portion of the support shaft 6a, a portion B in FIG.
A fan-shaped spur gear 17 is shown in FIG.
Is fixed via the key.

A shaft 15 is provided between the central portions of the pair of support plates 5d.
The shaft 15e extends horizontally through a bearing (not shown).
A large diameter spur gear 15C is press-fitted into e. The spur gear 15C meshes with the upper spur gear 17.

A shaft 15f is horizontally extended through a bearing (not shown) at the lower ends of the pair of support plates 5d, and a small diameter spur gear 15B meshing with the upper spur gear 15C is shown on the left side of the shaft 15f. It is press-fitted through the key. A large diameter spur gear 15A is press-fitted to the right side of the spur gear 15B via a key (not shown).

On the other hand, a pair of guide bars 13 constituting a step operating device are symmetrically provided upright inside the main floor (not shown) on the lower floor side and the upper floor side. These guide bars 13 are rack bars 14
It is loosely fitted in the guide holes that are vertically provided on the left and right of the.

At the center of the upper part of the rack rod 14, teeth of the rack are formed as shown in FIG. 3 (a), and these teeth mesh with the lower part of the upper spur gear 15A. A female screw hole is formed in the center of the rack rod, and the upper part of the screw shaft 12a is screwed into the female screw hole. The lower end of the screw shaft 12a is
It is connected to the drive motor 12.

In the wheelchair-equipped escalator constructed as described above, when the wheel stop step 5 approaches the entrance on the lower floor side, the drive motor 12 is driven to move the rack rod.
14 moves up and these teeth mesh with the spur gear 15A.

Then, the spur gear 15C that meshes with the small diameter spur gear 15B that rotates together with the rotating spur gear 15 are driven, and the door-shaped spur gear 17 that meshes with the upper end of this spur gear 15C.
Swings about 20 ° about the support shaft 6a.

When the support shaft 6a swings about 20 ° together with the spur gear 17, the bollards 6 supported by the support shaft 6a via the support portions 6d move clockwise in FIG. 1 with the support shaft 6a as an axis. Swing about 20 °.

Then, in the initial stage of this swinging motion, the lock pin 7 protruding from the lower end of the lower portion 6b of the car stop 6 is
As shown by the arrow C in FIG. 3B, the stopper rod 8 is pulled out, and the connecting rod 4a of the supporting step 4 shown in FIG.
It is possible to lift upward as shown in (b).

In the wheelchair-combined escalator having the wheel stop steps as described above, the driving force transmitted by the rack rod of the step operating device is transmitted to the support shaft 6a by the four spur gears. The rack rods and bevel gears shown are not required, and the components can be easily manufactured.

Further, since the adjustment of the tooth contact of the spur gears 15A, 15B, 15C and 17 is incorporated into the pair of integrally formed support plates 5d, the adjustment is unnecessary and the assembling time is shortened. be able to.

Further, since the long shaft 13 shown in FIG. 9 is not necessary and the short shafts 15e and 15f can support the spur gears 15A, 15B and 15C, the weight can be increased and the rigidity of the drive system can be increased.

Next, FIG. 4 is a partial longitudinal sectional view showing a second embodiment of the wheelchair-equipped escalator according to the present invention, which corresponds to FIG. 1 and to claim 4.

In FIG. 4, a rectangular stopper 8A is provided on the upper surface of the intermediate plate 5c shown in FIGS. 1 and 2 instead of the stopper 8 shown in FIGS. It is attached via a disc spring 9 inserted vertically.

In the case where the car stop step is constructed in this way, the restoring force of the disc spring 9 presses the upper surface of the lock pin 7 to move the car stop 6 in the vertical direction in a non-operating state. There is an advantage that a slight swing can be prevented and a noise caused by the swing can be prevented.

FIG. 5 is a partial vertical sectional view showing a third embodiment of the wheelchair-equipped escalator according to the present invention, which corresponds to FIGS. 1 and 4 and corresponds to claim 5.

In FIG. 5, the stopper 10 is fixed to the main frame at the position of the lower end of the front surface of the car stop 6A.

In the case where the car stop step is constructed in this manner, there is an advantage that the vibration of the car stop 6 can be further suppressed by receiving the pressing force of the stopper 8 by the restoring force of the disc spring 9 by the stopper 10.

[0053]

As described above, according to the first aspect of the present invention,
A wheelchair step with a tilt step and a support step and a wheel stop step is connected through a chain between normal steps connected to an endless chain that is wound around a main frame and driven by a drive unit. One side is connected to the movable side step of the main frame via a support shaft, and the other side of the main frame is driven by a step operating device provided on the upper floor and lower floor of the main frame and the other side swings upward. In the wheelchair-equipped escalator housed in the step, the engaging part provided on the fixed side step of the car stop step and the engaging part of the fixed side step provided at the lower end of the locking part suspended in the middle part of the car stop By providing the locking part that engages and disengages from the engaging part by swinging the car stop upward, when the car stop step comes into contact with the step operating device, the car stop is swung to release the locking part from the engaging part. Since it was made easy to assemble, it is possible to reduce the weight. It is possible to obtain a wheelchair shared escalator that.

According to the second aspect of the present invention, the gear train includes the first spur gear driven by the step operating device, the second spur gear inserted into the support shaft, the first spur gear, and the first spur gear. Since the third spur gear provided between the second spur gears facilitates the gear train adjustment and the production of parts, the assembly is easy and the weight can be reduced. It is possible to obtain an escalator that can also be used as a wheelchair.

According to the third aspect of the present invention, the engaging portion has a U-shaped vertical cross section, so that the engaging portion of the rocking car stop can be easily removed from the engaging portion. Therefore, it is possible to obtain the wheelchair-equipped escalator that is easy to assemble and can be reduced in weight.

Further, according to the invention described in claim 4, since the engaging portion is formed in a flat plate shape whose base end is supported by the spring member, the car stop before swinging is locked, so that the assembly is performed. It is possible to obtain a wheelchair-combined escalator that is easy and lightweight.

Further, according to the invention described in claim 5,
By providing a stopper on the fixed side step of the car stop step that the front of the lower end of the car stop abuts and is pressed by the lower end of the car stop by the return force of the spring device, the lower end of the car stop before swinging was supported. It is possible to obtain a wheelchair-combined escalator that is easy and lightweight.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view showing a first embodiment of an escalator for wheelchairs according to the present invention.

FIG. 2 is an enlarged detailed view taken along the line AA of FIG.

3A is a sectional view taken along line BB of FIG. (B) is a partial longitudinal cross-sectional view showing the operation of the first embodiment of the wheelchair-equipped escalator of the present invention.

FIG. 4 is a partial vertical sectional view showing a second embodiment of the wheelchair-equipped escalator according to the present invention.

FIG. 5 is a partial vertical sectional view showing a third embodiment of the wheelchair-equipped escalator according to the present invention.

FIG. 6 is a left side view showing an example of a conventional wheelchair-equipped escalator.

FIG. 7 is a partially enlarged perspective view showing an example of a conventional wheelchair-equipped escalator.

FIG. 8 is a partially enlarged perspective view showing the operation of a conventional wheelchair-equipped escalator.

FIG. 9 is a partially enlarged perspective view showing a main part of a conventional wheelchair-equipped escalator.

[Explanation of symbols]

1 ... Step chain, 2 ... Normal step, 3 ... Inclined step, 4 ...
Support step, 5 ... Car stop step, 5a ... Movable side step, 5b ...
Fixed-side step, 5d ... Support plate, 6 ... Car stop, 6a ... Spindle,
6b ... Locking portion, 6c ... Tip, 7 ... Lock pin, 8, 8A
... stopper, 9 ... disc spring, 10 ... stopper, 11A ... drive wheel, 11B ... rear wheel, 12 ... electric motor, 13 ... guide rod, 14 ... rack rod, 15A, 15B, 15C, 17 ... spur gear.

Claims (5)

[Claims] 1. A wheelchair step provided with an inclined step, a support step and a car stop step between normal steps connected to an endless chain which is wound around a main frame and driven by a drive section, via the chain. One side is connected to the movable side step of the car stop step via a support shaft, and the other side is driven by a step operation device provided on the upper floor side and the lower floor side of the main frame and a gear train. In a wheelchair-equipped escalator in which a wheel stop swinging upward is housed in the wheel stop step, an engaging portion provided on a fixed side step of the wheel stop step and a lower end of a locking portion that is vertically provided at an intermediate portion of the wheel stop. The wheelchair-equipped escalator, further comprising: a locking portion that is provided on the engaging portion of the fixed-side step and that is disengaged from the engaging portion by swinging the wheel stopper upward. 2. A gear train between a first spur gear driven by the step operating device, a second spur gear inserted in the support shaft, and the first and second spur gears. The third provided in
The wheelchair-combined escalator according to claim 1, characterized in that 3. The wheelchair-equipped escalator according to claim 1, wherein the engaging portion has a U-shaped vertical cross section. 4. The engagement portion is formed in a flat plate shape having a base end supported by a spring member.
Escalator for wheelchairs as described in. 5. A stopper provided on a fixed side step of the car stop step, wherein a stopper which is in contact with the front of the lower end of the car stop and is pressed by the lower end of the car stop by the restoring force of the spring member is provided. The wheelchair-equipped escalator according to claim 4.