JP3407956B2 - Wheelchair lift - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator used for mounting a wheelchair to eliminate a step. 2. Description of the Related Art Conventionally, as a means for escaping when a motor stops operating due to a power failure or the like during ascent or descent, a method in which a third party directly rotates an output shaft of the motor with a handle or the like, or a storage battery is used. There has been a method in which a motor is rotated using this as a temporary power supply. [0003] Problems of the above-mentioned conventional technology are as follows: the former has no problem if an assistant is present, but cannot be operated by a person in a wheelchair, and the latter has a storage battery. Because of the natural discharge, regular inspections must be performed to ensure that sufficient power is stored. [0004] Therefore, in the present invention can be easily operated themself are riding in a wheelchair, by further mechanical arrangement, without energizing the drive motor for the movable wheelchair to the lowering end position It is an object to provide an elevator. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has an outer fitting slidably up and down along a column 2 erected on a base frame 1 installed on the ground side. A lifting table 3 that is mounted integrally with the lifting table 3 and has a rectangular mounting table 30 in a plan view through which a wheelchair can pass back and forth;
The output rotation shaft 15 of the drive motor 8 that can rotate forward and reverse and the winding shaft 11 that is supported in the front-rear direction are integrally arranged, and one end side of the string member 12 is locked to the winding shaft 11,
The other end side is locked to the upper end of the support column 2, and the winding shaft 11 is rotated around the longitudinal axis so that the string member 12 is wound around the outer periphery, and
In a lift for a wheelchair comprising a lifting device capable of raising and lowering 0, a rear end of the motor 8 is provided with an output rotary shaft.
Integrated rear brake plate and front brake plate
Front brake plate that is biased by a spring
Is pressed against the rear brake plate,
It is configured to regulate the rotation of the
A pawl member pivotally mounted via a racket and a release lever
Release by linking the bar with the wire
By operating the lever, the claw member is operated to cause the front shake
Release the brake plate against the rear brake plate against the spring.
Brake release device that rotates the rotation output shaft
18 were provided. [0006] [Embodiment] Hereinafter, a description will be given of an embodiment with reference to the drawings in detail of the present invention. 1 is a base frame. The base frame 1 includes left and right side frames 1a, 1b, and connecting frames 1c, 1c,... Connecting the side frames 1a, 1b to the left and right. Supports 2 and 2 made of rectangular pipes are fixed to the side frames 1a and 1b at substantially the center of the side frames 1a and 1b, respectively. [0007] Reference numerals 3 and 3 denote elevating members, in which rollers 4, 4, and 可能 な, which can roll up and down along the column 2, are provided. Further, stays 5, 5 are fixed to the lifting members 3, 3, respectively. Connecting members 6, 6, which extend in the left-right direction, are attached to the stays 5, 5, and the left and right lifting members 3, 5 are attached. 3 are integrally formed. The connecting members 6, 7 are provided in the front-rear direction at substantially right and left central portions of the connecting members 6, 6, and a driving motor 8
This is a vertical pipe to which a motor support frame 9 for supporting the motor is mounted. Reference numeral 10 denotes an anti-vibration stay for suppressing vibration of the drive motor 8. Reference numeral 11 denotes a take-up shaft for winding the string member 12 around the outer peripheral portion. The take-up shaft 11 is rotatably supported by a front bearing 13 and a rear bearing 14 around a longitudinal axis. And the output rotary shaft 15 are integrally mounted so as to rotate about the same axis. In addition, both ends of the string member 12 are attached to the winding shaft 11 and the upper end of the column 2, respectively. At the rear end of the drive motor 8, as shown in FIG. 9, a front brake plate 16 provided on the motor main body side when power is not supplied is connected to a compression spring (not shown).
Rear brake plate 1 integrated with the output rotary shaft 15
7, the rotation of the output rotary shaft 15 is regulated. However, when an electric current is applied, an electromagnetic force is generated, and as shown in FIG. The rear brake plate 17 is separated from the rear brake plate 17 so that the output rotation shaft 15 integrated with the rear brake plate 17 can freely rotate. A brake release device 18 is provided at the rear end of the drive motor 8 by using this operation to forcibly release the brake even when power is not supplied. In the brake release device 18, a pawl member 20 for causing the front brake plate 16 to move back and forth is pivotally attached to a bracket 19 attached to the rear end of the drive motor 8 by a pin 21. 20 and release lever 2
2 are connected to each other by a wire 23. Also, 2
Reference numeral 4 denotes a kick spring that urges the tip of the claw member 20 in a direction away from the front brake plate. When the release lever 22 is pulled up in the direction of the arrow (a) as shown in FIGS. 9 and 10, the braking release device 18 causes the distal end of the claw member 20 to pivot about the pin 21 against the kick spring 24. It will rotate upward. Then, the tip of the claw member 20 comes into contact with the front brake plate 16, and pushes the front brake plate 16 forward to separate it from the rear brake plate 17. That is, this release lever 2
In a state in which 2 is pulled up, the output rotation shaft 15 rotates freely. Also, if you release your hand from the release lever 22,
By the action of the kick spring 24, the original front brake plate 16 and the rear brake plate 17 are returned to the press-fitted braking state. As described above, the release lever 22
Are connected to each other by a wire 23 and can be moved to any position. However, in this embodiment, they are attached to the rear end surface of the elevating member 3 which can be easily operated by the rider. Reference numeral 25 denotes a bent ring body that regulates the string member 12 into an L-shape in a front view, and is attached to reinforcing pipes 26, 26 fixed to left and right ends of the connecting members 6, 6. Reference numeral 27 denotes a cylindrical cover that covers the support column 2. A cover member 28 is attached to an upper end portion, and an attachment cover 29 that is attached to the elevating member 3 is fixed to a lower end portion. Reference numeral 30 denotes a mounting table which is attached to the upper surfaces of the connecting members 6 between the elevating members 3 and has a rectangular shape in plan view. Reference numeral 31 denotes a front slope for bridging the ground and the mounting table 30, and has a front end rotatable in a vertical direction with the front end of the mounting table 30 as a base end.
Further, an arm 33 to which a rolling roller 32 is attached is provided at the left and right rear ends of the front slope 31, and a base is fixed to the front end of the side frame 1a. As shown in FIG. 11, the rolling roller 32 abuts on the lower end of the rod member 34 as the mounting table 30 is raised, and the front end of the front slope 31 is cammed. Part turns upward,
When the mounting table 30 is further raised, the rolling roller 32 moves along the front side of the bar member 34, and the front slope 31 is held in an upright state. At the rear end of the placing table 30, similarly to the front slope 31, a rotatable vertical direction is provided, and a rear slope 35 for bridging the placing table 30 and the upper surface of the step is attached. . This rear slope 35 is
As shown in FIG. 12, a base end of a link 39 having a bracket 37 fixed to a side frame 36 having a lower end fixed to the side surface of the mounting table 30 and a lever 38 extending in the front-rear direction fixed to a distal end. And the upper end of the link 39 is connected to the intermediate portion of the side of the rear slope 35 by a rod 40, and the rear slope 35 rotates up and down in conjunction with the operation of the lever 38, and stands upright. It is configured to be held in a state. 41 is fixed to the intermediate portion of the link 39 and the side frame 3
6 is a stopper pin that comes into contact with the upper surface of 6 and restricts rotation. Reference numeral 42 denotes a control box having a built-in control device for electrically controlling the forward and reverse rotations of the drive motor 8. The control box 42 is provided between the rod member 34 and the column 2 on which the rod member 34 is located. Is placed in a suitable place, and the placing table 30
The base is fixed to the side of the. A switch 43 for raising and lowering the drive motor 8 in the forward and reverse directions is provided above the control box 42.
Emergency switch 44 for stopping power supply, power ON, OF
A switch box 46 provided with a power switch 45 for switching F is attached to a metal tube 47 or a projection 48 provided on the rod member 34 at a rising end position or a falling end position on the front surface. Limit switches 49 and 50 for automatically stopping the rotation of the drive motor 8 by being in contact with each other are provided. Further, a cylinder 51 through which the rod member 34 can be inserted is attached, and a gap between the limit switches 49 and 50 and the rod member 34 is provided. Is kept constant. Reference numeral 52 denotes a safety cover provided outside the elevating member 3 and having a base attached to the front and rear ends of the side frame. Numeral 53 is a side plate provided in the middle of the safety cover 52 in the vertical direction.
The safety cover 52 is provided so that it can be attached to either the left or right side. [0018] Next, a description will be given of the operation of the above example. If a disabled person in a wheelchair enters indoors from outside,
The elevator according to the present invention is set at the lower end position as shown in FIG. Then, the wheelchair is entered from the front slope 31 side, and the wheelchair is stopped on the mounting table 30 upper surface. Then, the elevation switch 43 is operated to operate the drive motor 8 so that the winding shaft 11 rotates in the direction of the arrow (b) as shown in FIG. Then, winding shaft 1
A pair of left and right string members 12 each having one end attached to the winding shaft 1 are wound around the outer periphery of the winding shaft 11. Therefore, this has the effect of shortening the length of the string member 12, and since one end is attached to the upper end of the support 2, the mounting table 30 is lifted up. At the start of the ascent of the mounting table 30, the front slope 31 is automatically swung up and held in that state as shown in FIG. . When the mounting table 30 and the floor upper surface are substantially at the same height, the operation of the elevation switch 43 is released. Then, the rotation of the drive motor 8 and the winding shaft 11 is stopped, and the rising movement of the mounting table 30 is stopped. In this state, as shown in FIG. 12, by operating the lever 38, the rear slope 35 is turned downside down to bridge the upper surface of the floor. Then, when the wheelchair is advanced, it is possible to easily and safely enter the room. After entering the room, it is convenient to operate the lever 38 again to raise and hold the rear slope 35 without obstructing the opening and closing when there is a sash or the like. Since the height of the metal cylinder 47 provided on the upper side of the rod member 34 is adjustable, the operating position of the ascending limit switch 49 can be arbitrarily set by setting the metal cylinder 47 in an appropriate position. That is, this means that the ascending limit height can be arbitrarily selected.
Even when the button 3 is kept depressed, when the ascending limit switch 49 and the metal cylinder 47 rise to the set height where they come into contact with each other, they automatically stop and are safe and extremely convenient. [0022] Although the case where the next leaving the indoor to outdoor, in a state of being bridged the rear slope 35 by operating the lever 38, thereby advancing the wheelchair from the rear slope 35 side. By operating the lever 38 again, the rear slope 35 is held upright. In this state, the elevation switch 43 is operated to rotate the drive motor 8 and the winding shaft 11 in the direction opposite to the arrow (b). Then, the string member 12 is fed out from the winding shaft 11, and the mounting table 30 is lowered. At the lower end position, the limit switch 50 is activated by contact with the projection 48, and the drive motor 8 automatically stops. At this time, since the front slope 31 has already automatically fallen forward, the wheelchair can be moved forward as it is to go out very easily. Next, during the course of the lifting movement, the drive motor 8 in the power failure or the like will be described escape method when no longer working. In the elevator according to the present invention, as described above, the lifting of the mounting table 30 is caused by the driving force of the drive motor 8, and therefore, when the drive motor 8 stops operating, the elevator falls into a completely immobile state. . In such a case, there is no problem if there is a caregiver.
And the brake release device 18 is operated. Then
The output rotation shaft 15 of the drive motor 8 is freely rotatable, and therefore, the winding shaft 1 integrated with the output rotation shaft 15.
1 indicates that the mounting table 30 is lowered by rotating in the direction opposite to the arrow (b) according to gravity. However, since this is a state in which no braking is performed, the mounting table 30 is suddenly lowered, which is a very dangerous state for a disabled person riding on the vehicle. However, since the lowering speed can be adjusted by alternately repeating the braking and the release by operating the release lever 22, the lowering can be performed safely. As is apparent from the above description, the elevator for a wheelchair according to the present invention can be raised and lowered by winding and feeding out a string member around a winding shaft rotated by a drive motor. Furthermore, the actuator which brakes and releases the output rotary shaft by electromagnetic force, which is built into this drive motor, is equipped with a brake release device which can be operated from the outside even when power is not supplied, and the release lever is connected by a wire. Therefore, even in an emergency where the drive motor does not operate due to a power failure or the like, the person riding in a wheelchair can lower the mounting table by a very simple operation and escape, and the release lever can be moved to any position. Can be operated in the same manner as described above, and an effect that periodic inspection of the storage battery is not required can be obtained.

[Brief description of the drawings] FIG. 1 is a partially simplified overall side view. FIG. 2 is a plan view thereof. FIG. 3 is a front view thereof. FIG. 4 is a side view showing the structure of a lifting member. FIG. 5 is a plan view thereof. FIG. 6 is a front view thereof. FIG. 7 is a plan view of a main part. FIG. 8 is an explanatory view showing the operation of raising and lowering the mounting table. FIG. 9 is a side sectional view showing the operation of the brake release device. FIG. 10 is a side sectional view showing the operation of the brake release device. FIG. 11 is an explanatory view showing the operation of the front slope. FIG. 12 is an explanatory view showing an operation of a rear slope. [Explanation of symbols] 1 Base frame 2 props 3 lifting members 8 Drive motor 11 Winding shaft 12 String member 15 Output rotary shaft 18 Brake release device 22 Release lever 23 wires 30 mounting table

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-146749 (JP, A) JP-A-60-199095 (JP, A) JP-A-5-146473 (JP, A) 44751 (JP, U) JP-A 4-27055 (JP, U) JP-A 5-51894 (JP, U) JP-B 46-476 (JP, B1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B66F 7/02 A61G 5/00 A61G 7/10

Claims (1)

(1) An elevating member (3) which is externally slidable up and down along a support column (2) erected on a base frame (1) installed on the ground, and the elevating member. The mounting table 30 is integrally mounted on the mounting table 30 and has a rectangular shape in plan view so that the wheelchair can pass back and forth.
And an output rotation shaft 15 of the drive motor 8 which can be rotated forward and backward, and a winding shaft 11 which is supported in the front-rear direction, are integrally arranged, and one end side of the string member 12 is locked to the winding shaft 11. By locking the other end to the upper end of the support 2
The lifting device for a wheelchair, comprising: a lifting device that rotates the winding shaft 11 around the longitudinal axis so that the string member 12 is wound around the outer periphery and the placing table 30 can be raised and lowered. The output end of the motor 8
Rear brake plate integrated with the spindle and front brake play
The front brake pedal is biased by a spring.
The rate is crimped to the rear brake plate,
And configured to regulate rotation of the output rotation shaft.
And a claw member pivotally mounted via a bracket.
By linking the release lever and the wire
The claw member is operated by operating the release lever.
The front brake plate against the spring and the rear brake play
Brake to separate the rotary output shaft from rotation
An elevator for a wheelchair, comprising a release device 18 .