JP4019192B2 - Safety device for walking support device and walking support device having the same installed - Google Patents

Description

  The present invention relates to a walking assistance machine safety device for the purpose of maintaining safety of a walking assistance machine such as an outdoor walking car, indoor walking car, or wheelchair used for rehabilitation and the like, and a walking assistance machine provided with the same.

Conventionally, for indoor and outdoor pedestrian vehicles or wheelchairs, various structures have been proposed and put to practical use, but stopping or braking of pedestrian vehicles etc. are both manual via the operation box, Although there is an automatic adjustment of the moving speed, the instantaneous automatic stop device for the wheel has not been put to practical use against an unexpected external force.
Japanese Patent Laid-Open No. 11-253509

  The conventional walking assist device can be safely stopped even on a slope by applying a brake when stopped, but if it forgets to apply the brake, it suddenly starts moving due to an unexpected external force, causing harm. There was a problem such as fear.

  In addition, when using a walking support machine instead of a cane, there were problems such as forgetting to apply the brake and causing unexpected harm.

  The present invention solves the above-mentioned conventional problems by installing a safety device that automatically stops rotation on the rotating shaft of a wheel such as a walking support machine or a wheelchair to automatically stop rotation due to an unexpected external force. It was.

That is, the invention of the safety device is attached to the rotating shaft of the walking support machine, and is moved by centrifugal movement to be locked with the locking step of the locking cylinder board, and the locking with the locking step fixed to the fuselage. In the safety device combined with the cylinder board , the locking tool is two similar locking pieces eccentrically attached to a support plate fixed to the rotating shaft, and the free ends are connected by a spring, the locking piece is, with respect to the rotation axis, symmetric, and Ru safety devices der for walking support device, characterized in that mounted to be eccentrically moved by the centrifugal force.

Moreover, the invention of the walking support machine is characterized in that the locking device according to claim 1 is fixed to a rotating shaft of a wheel of the walking support device, and a locking cylindrical board that is locked to the locking device is fixed to the airframe. It is a walking support machine with a safety device.

  According to the safety device, even if the instantaneous external force is against the intention, the rotation of the immediate wheel is stopped (locked), and the stop position can be maintained, so that the danger caused by the rapid movement of the support machine, etc. can be prevented in advance. can do.

  In addition, if the support machine is moved slowly when it stops, the immediate lock can be released, so there is no possibility of causing any trouble in the forward or backward movement after the dredging.

  Since this invention installs the automatic control safety device that can immediately stop the rotation of the wheel against the instantaneous external force on the rotation axis of the wheel of the walking assistance machine, There is an effect that the locking piece automatically protrudes and locks with the locking cylinder board fixed to the support machine, and the rotation of the wheel can be stopped immediately.

  Therefore, even if the brake is forgotten or the brake cannot be applied, the safety device automatically works against a sudden movement, and it is possible to prevent harm.

  This invention installs a safety device on the rotating shaft of a wheel such as a walking assistance machine or a wheelchair, and even if the brake of the walking assistance machine is forgotten to be applied or cannot be applied, it is fixed to the rotating shaft of the wheel. The locking piece of the support plate automatically protrudes and locks to the locking step of the locking cylinder board fixed to the airframe of the support machine, so that sudden rotation of the rotating shaft is instantaneously prevented. Can do.

  The support plate is fixed to the rotating shaft, and the locking end of the locking piece eccentrically attached to the supporting plate is projected outward from the periphery of the locking plate by the rotation of the rotating shaft. Since the rotating shaft is immediately stopped even for an instantaneous external force, the movement against the intention of the support machine can be stopped after all because the locking is performed on the locking step of the locking cylinder board fixed to the machine body.

  There are two locking pieces, which are symmetrically attached to the support plate, and both the locking pieces are pulled to each other by a spring. Therefore, as long as the rotating shaft rotates at a normal rotation speed, the rotating shaft Cannot be prevented.

  An embodiment of the present invention will be described with reference to FIGS. 1, 2, and 4. An arc-shaped locking piece 3, 3 having a locking portion 3 a is attached to a circular support plate 5 fixed to the rotating shaft 2 of the wheels 1, 1. The end portions are eccentrically attached by the pins 4 and 4 and are rotatably attached to face each other (FIG. 1C). Both ends of the spring 6 are fixed to the holes 3b and 3b provided at the distal ends of the locking pieces 3 and 3 so that the locking pieces 3 and 3 are pulled close to each other (so as not to protrude outward). The safety device 15 is configured (FIG. 1).

  On the other hand, a bottomed cylindrical locking cylinder board 8 is fixed to the structure rod 7 of the support machine 10 by pins 9 and 9, and locking step portions 8 a and 8 b And the locking portion 3a of the locking piece and the locking step portions 8a and 8b can be locked.

  In the above-described embodiment, when the rotating shaft 2 suddenly rotates in the direction of arrow 13, the support plate 5 also rotates in the direction of arrow 14, so that the locking pieces 3, 3 are disengaged as indicated by arrow 9 by centrifugal force. The locking portion 3a contacts and locks with the locking step portion 8a, and the locking plate 5 stops. Therefore, the rotating shaft 2 inevitably stops.

  Also, if the rotating shaft 2 rotates suddenly in the direction of arrow 11, the support plate 5 rotates in the direction of arrow 12, and the locking piece 3 jumps outward as indicated by arrow 9 by centrifugal force. The locking part 3 a is locked with the locking step part 8 b of the locking cylinder board 8.

  As described above, since the rotation of the rotary shaft 2 can be stopped immediately regardless of whether the rotary shaft 2 is rotated to the right or left, harm can be prevented.

  Examples of the present invention will be described with reference to FIGS. 3 and 4. In the outdoor walking assistance vehicle 10 of FIG. 3, the safety device 15 of the present invention is fixed to the one side structure 7 of the rotating shaft 2 of the wheels 1 and 1. It is. In the figure, 17 is an auxiliary vehicle, and 18 and 18 are handles.

  Moreover, about the indoor walk assistance machine 19, the latching cylinder board 8 of the safety device 15 of this invention is being fixed to the 1 side structure rod 7 of the rotating shaft 2 of the wheels 1 and 1. As shown in FIG. In the figure, 16 is a handle.

  Next, the locking cylinder board 8 of the safety device 15 is fixed to the body 20 of the wheelchair 25, the fixed shaft 26 is provided on the locking cylinder board 8, and the driving wheel 21 is installed on the fixed shaft 26.

  FIGS. 4A and 4B show examples of fixing the safety device 15.

  That is, the locking piece 3 is fixed to the support plate 5 fixed to the rotating shaft 2 with the pin 9, and the locking piece 3 attached to the support plate 5 is provided in the machine support 7 of the walking support machine. The locking piece 3 is inserted into the inside of the board 8 so that the locking step of the locking cylinder board 8 is opposed to the locking piece 3. In the figure, reference numerals 1 and 1 denote wheels (FIG. 4A).

  Next, the locking cylinder board 8 of the safety device 15 is fixed to both wheels of the body 20 of the wheelchair 25, and the support plate 5 is fixed to the boss portion 22 of the drive wheel 21, and the locking piece 3 of the support plate 5 is fixed. This is opposed to the locking step portion of the locking cylinder board 8. In the figure, 27 is an auxiliary wheel, 28 is a footrest, 29 is a handle, and 30 is a seat plate (FIGS. 3 (c) and 4 (b)).

(A) An enlarged perspective view in which a part of the development of the embodiment of the safety device of the present invention is partially omitted, (b) An enlarged perspective view of the locking cylinder board, and (c) An assembled state of the locking pieces. FIG. (A) The partial cross-sectional enlarged view which similarly shows the latching state at the time of right rotation, (b) The partial cross-sectional enlarged view which similarly shows the latching state at the time of left rotation. (A) A perspective view of the same walking support vehicle, (b) A perspective view of another walking support vehicle, and (c) A perspective view in which a part of the wheelchair is also broken. (A) The partial cross-sectional enlarged view which abbreviate | omitted partially in the use condition of a safety device, (b) The partial cross-sectional enlarged view abbreviate | omitted the part of the Example of the wheelchair similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheel 2 Rotating shaft 3 Locking piece 4 Pin 5 Support plate 6 Spring 7 Structure 杆 8 Locking cylinder board 9 Pin 10 Walking support machine 15 Safety device 19 Walking support car 21 Drive wheel 22 Boss part 25 Wheelchair

Claims (2)

Attached to the rotary shaft of the walking assistance device, and distal movement, the safety in combination with locking tool for locking stepped portion and the locking of the locking cylinder plate, and a locking stepped portion with locking tube plate fixed to the machine body In the apparatus, the locking tool is two similar locking pieces eccentrically attached to a support plate fixed to a rotating shaft, and a free end is connected by a spring, and the locking piece is rotated. A safety device for a walking assist device, which is mounted symmetrically with respect to an axis and capable of moving eccentrically by centrifugal force .   A walking support machine with a safety device, wherein the locking tool according to claim 1 is fixed to a rotating shaft of a wheel of a walking support machine, and a locking cylindrical board that is locked to the locking tool is fixed to the airframe.

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