JP2011147574A - Walking aid stick with rotation control functional wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a walking aid stick including a rotational direction control functional device attached to a ground contact wheel at the tip of the stick to permit advance or following rotation, different from the operation of a conventional stick such as raising or sometimes dragging a ground contact part at the tip. <P>SOLUTION: A ratchet mechanism includes a pawl holding part 2 fixed to a shaft 1 making the ground contact wheel rotatable and having a retractable pawl 2' and a ring gear 6 with serrated pawl teeth 6' on the inner surface to be engaged with the pawl 2' to prevent the ground contact wheel from rotating in the reverse direction by allowing the ground contact wheel at the tip to rotate in one direction only. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a walking movement assisting wand to which a rotation direction control function device capable of rotating in one direction and preventing reverse rotation is added to a grounding wheel at a wand tip.

  In general, a walking stick assists walking movement by grounding a grounding part such as a rubber cover at the tip of the walking stick. Therefore, many walking sticks have been put to practical use as life assistance tools indispensable for daily life, whether indoors or outdoors, for weak walkers.

However, regardless of the one-point support or multi-point support specifications for the tip of the cane, it is difficult and painful for users who have weakened their physical strength, such as muscle strength, requiring an operation such as lifting the tip of the tip of the cane slightly every time they move. Along with this, there was a safety-related problem such as dragging the tip of the cane.
Japanese Patent No. 3822297 Walking car (walker) silver car

  The problem to be solved is that the user can move forward or follow without a sense of resistance without lifting or dragging the grounding part of the tip of the cane in accordance with walking. It is the point which does not have the function which secures a fixed position while moving and supports and enables walking movement assistance.

The present invention attaches a rotatable wheel to the grounding portion of the cane tip, and adds a rotation direction control function device that enables rotation in only one direction to the grounded wheel and prevents reverse rotation.
As one of the means, a claw portion that is provided in a grounding wheel at the tip of the cane so as to be freely accessible through a cylinder part that constitutes a claw part holding portion that is fixedly mounted with a shaft that can rotate the grounding wheel as a central axis; The main feature is that it has a lathet function consisting of a ring gear with a claw tooth portion that is configured in the inner periphery of a saw tooth claw tooth portion that meshes with this claw portion and is integrally formed in a wand tip grounding wheel. To do.
As a result, the objective of being able to transmit intermittent one-way rotational movement between the engaging claw portion and the claw tooth portion to the rotation of the wand tip grounding wheel is realized.

  The walking movement auxiliary cane according to the present invention includes a rotation direction control function device that allows rotation in only one direction and prevents reverse rotation to a grounding wheel provided at the tip of the walking stick. Unlike the sense of use of the specifications, it is possible to easily perform an operation such as a forward or follow-up operation on the ground wheel at the tip of the cane under various conditions of use for weak walkers, and the walking movement assistance is safe and reliable.

  The rotation direction control function device according to claim 2 and the ring gear constituting the claw tooth portion meshing with the claw portion set on the ground wheel at the tip of the wand transmits the intermittent unidirectional rotational motion. It is highly superior in functionality that it is safe and easy to obtain reliable operability that can prevent reverse rotation.

  The one-way clutch mechanism provided between the inner race and the outer race set in the grounding wheel at the tip of the cane is configured in the rotational direction control function device according to claim 3 so that the operation is smooth and safe. Therefore, it is very excellent in functionality that a reliable operability can be easily obtained.

  A ring gear that configures a claw tooth portion that meshes with a claw portion that can be freely inserted into and removed from a claw portion holding portion fixed to the shaft inside the ground wheel of the rotatable structure of the cane tip is integrally configured on the ground wheel, The object of providing a means for transmitting intermittent one-way rotational motion to the wheel to prevent reverse rotation has been realized with a minimum of members.

  FIG. 1 shows an embodiment of the present invention in which a ratchet mechanism is employed in a rotation direction control function device provided on a grounding wheel at a cane tip. FIG. 1 shows a claw tooth formed in a ring gear 6 integrated with a wheel formed in a rotatable wheel. FIG. 2 is an explanatory view showing a ratchet mechanism including a claw portion holding portion 2 fixed to a shaft 1 that is provided with a claw portion 2 ′ that can be freely inserted and removed, and FIG. 2 is an explanatory view showing a longitudinal section of FIG. 1. .

Since the subject of the present invention is the mounting method of the rotational direction control function device system installed on the grounding wheel of the wand tip, description of the shape configuration of the wand that attaches the wheel to the wand tip is omitted.
Hereinafter, it will be described in detail with reference to the drawings.

  The claw holding part 2 fixedly mounted around the shaft 1 in the cane grounding wheel having a rotatable structure around the shaft 1 to which the cane is attached is made of a slightly thick disc-like plate material. A portion where the cylinder portion 4 is provided is configured, and a claw portion 2 ′ that allows the height to enter and exit from the cylinder portion 4 is held.

  The claw portion holding portion 2 is sandwiched between the claw portion holding portion 2 and a wheel 7 ′ in which a rotatable rubber tire portion 8 is attached to the other side with a rotatable left and right hub 7 as a rotating shaft portion. A ring gear 6 with a claw tooth portion 6 'that forms a serrated claw tooth portion 6' that meshes with a claw portion 2 'that can be freely inserted and removed is integrally constructed and attached.

  The claw portion 2 ′ has a rod portion 3 ′ with a flange portion 3, and moves up and down without departing from the inside of the cylinder portion 4 via a coil spring 5 provided between the lower portion of the flange portion 3 and the bottom portion of the cylinder portion 4. Only the claw portion of a length that engages with the claw tooth portion 6 ′ is movable and can be moved in and out of the cylinder portion 4.

  In this case, the claw portion 2 ′ pushed up through the coil spring 5 is always meshed with the claw tooth portion 6 ′ formed in the ring gear 6, but rotates through the rubber tire portion 8. By the rotation of the claw tooth portion 6 ′ of the ring gear 6 accompanying the rotation of the wheel 7 ′ in the right direction, the claw portion 2 ′ having an inclined surface combined with the inclined surface formed on one side by the sawtooth claw tooth portion 6 ′. By being pushed down so as to slide, the meshing with the claw tooth portion 6 ′ is released, but when it is released from the inclined surface, it rises and meshes with the claw tooth portion 6 ′ again, so that the wheel 7 ′ with the rubber tire portion 8 is engaged. The ratchet function is ensured to prevent reverse rotation to the left and transmit intermittent unidirectional rotational motion.

By increasing the number of teeth of the claw tooth portion 6 ′ engaged with the claw portion 2 ′ as much as possible, it is possible to expect a small-lattice effect under various rotation conditions of the wheel 7 ′.
In addition, by making the ground wheel at the tip of the cane into a plurality of forms, a more stable walking movement assist effect can be expected in addition to the characteristics of the rubber tire portion 8.

  This is one of the effective methods that can be expected in walking aids that use a ground wheel at the tip of the cane, and can be applied to various applications such as social life and independence support as well as rehabilitation medicine.

A claw portion with a claw portion 2 'that meshes with a claw tooth portion 6' installed in the ground wheel in an embodiment of the walking movement assisting cane of the present invention in which a latitudette mechanism is employed in a rotation direction control function device provided on the ground wheel of the wand tip. It is explanatory drawing which shows the combination structure of the principal part in the holding | maintenance part 2 grade | etc.,. (Example 1) It is a longitudinal cross-sectional view of FIG. (Example 1)

DESCRIPTION OF SYMBOLS 1 Shaft 2 Claw part holding | maintenance part 2 'Claw part 3 Gutter part 3' Rod part 4 Cylinder part 5 Coil spring 6 Ring gear 6 'Claw tooth part 7 Hub 7' Wheel 8 Rubber tire part

Claims (3)

  A walking movement auxiliary cane characterized in that a rotation direction control function device that allows rotation in only one direction and prevents reverse rotation is added to a grounding wheel at a cane tip.   The rotation direction control function device forms a claw portion that is movably provided on a claw portion holding portion that is fixedly mounted on a shaft having a rotatable structure with a ground wheel at the tip of the cane, and a claw tooth portion that meshes with the claw portion and rotates. The walking movement auxiliary cane according to claim 1, wherein a ratchet mechanism comprising a ring gear with a claw tooth portion which is integrally formed with a cane grounding wheel having a free structure is formed.   The rotation direction control function device constitutes a one-way clutch mechanism provided between an inner race and an outer race set on the grounded wheel via a shaft having a grounded wheel at the tip of the cane as a rotatable structure. The walking movement auxiliary cane according to claim 1.

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