JP3247672B2 - Aid for walking on slopes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assisting device for walking on a sloping ground for keeping a foot substantially horizontal when performing agricultural work or climbing on a sloping land such as an orchard in a mountain area.

[0002]

2. Description of the Related Art For example, when performing various operations on a slope such as an orchard in a mountainous area, the feet are unstable and slippery, which makes the operation difficult. Therefore, it is difficult to work for a long time, and it is easy to be tired. In view of the above, various assisting devices have been conventionally proposed which are attached to the lower surface of a shoe to hold the foot substantially horizontally (for example, Japanese Utility Model Publication No. 48-3047, Japanese Utility Model Publication No. 6-251).
No. 31, publication).

However, conventional assistive devices are mainly intended to correct the inclination of the pedestrian in either the front-back direction or the left-right direction, and cannot correct the omnidirectional inclination. There is. In view of this, the present applicant has previously proposed in Japanese Patent Application Laid-Open No. Hei 9-108010 an assisting device capable of holding a foot substantially horizontally on a slope in any of the front-rear direction and the left-right direction. That is, a grounding plate on the ground side and a footrest plate arranged at a predetermined interval above the grounding plate are provided, and the footrest plate is always substantially horizontal irrespective of the tilt of the grounding plate on the sloped ground. It is configured so as to be able to be held.

[0004]

SUMMARY OF THE INVENTION The present invention relates to the improvement of the above-mentioned assisting device for walking on a slope, and stably maintains the footrest plate substantially horizontally regardless of the inclination of the grounding plate.
Moreover, an object of the present invention is to provide an assisting tool for walking on a slope that can be reliably performed.

[0005]

Means for Solving the Problems In order to achieve the above object, an assisting device for walking on a slope according to the present invention has the following configuration.

That is, a grounding plate on the ground side and a footrest plate provided at a predetermined interval above the grounding plate are provided, and the footrest plate can be moved regardless of the inclination of the grounding plate on a slope. In an assisting device for walking on a sloping ground that can always be held substantially horizontally, a universal joint is provided at a tilting center position of the grounding plate with respect to the footrest plate so as to tiltably connect the footrest plate and the grounding plate. It is characterized by. As the universal joint, for example, a ball joint composed of a concave spherical body and a spherical body fitted thereto can be used.

Specifically, for example, the grounding plate and the footrest plate are configured to be tiltable in the front-rear direction and the left-right direction,
Between the grounding plate and the footrest plate, a substantially semi-circular front-back and left-right tilting prevention claw plate having a large number of locking claws in the circumferential direction with respect to the grounding plate or the footrest plate. And an engaging piece with an engaging claw that is selectively engaged with the locking claw of each claw plate and constantly holds the footrest plate substantially horizontally irrespective of the tilting of the grounding plate on the sloped ground. Provided, at the intersection of the tilting center axis of the two tilting preventing claw plate, a ball joint joint composed of a concave spherical body and a spherical body fitted thereto, and a tilting shaft integrally provided with the spherical body, What is necessary is just to slidably fit into the cylindrical body provided integrally with the footrest plate side.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on an embodiment shown in the drawings. FIG. 1 is a front view of an embodiment of an assisting device for walking on a sloped land according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a longitudinal front view of a state of walking on a slope inclined in the left-right direction, and FIG. It is a vertical side view of a state of walking on an inclined slope.

In FIG. 1, reference numeral 1 denotes a grounding plate, 2 denotes a footrest provided above the grounding plate 1, and a band retaining member 31 for placing and fixing a foot or shoes on the footrest 2 32 and tightening bands B1 and B2.

Between the grounding plate 1 and the footrest plate 2, a substantially semi-arc-shaped forward-backward tilt preventing claw plate 4 having a large number of locking claws 4a on its outer peripheral surface, and a locking claw 5a are provided. An engagement member 6 having a left-right tilt-preventing claw plate 5 and locking claws 6a, 7a for selectively engaging with the locking claws 4a, 5a of each claw plate 4, 5 is provided. 7 are provided.

The claw plate 4 for preventing tilting in the front-rear direction is mounted on a bearing member 8 having both ends attached to the upper surface of the ground plate 1 with bolts and nuts not shown in the figure as shown in FIGS. 8a, the claw plate 5 for tilting prevention in the left-right direction is similarly connected to the ground plate 1 as shown in FIG.
Is connected and held by a horizontal shaft 9a so as to be tiltable in the front-rear direction on a bearing member 9 mounted on a top surface thereof with bolts and nuts not shown. The two claw plates 4 and 5 are arranged so as to be orthogonal to each other when standing upright at a right angle to the ground plate 1.

Further, as shown in FIGS. 1 and 4, the upper part of the claw plate 4 for preventing tilting in the front-rear direction is slidably disposed between a pair of support plates 10 having a substantially inverted L-shaped cross section. A pair of front and rear engagement members 6.6 engaged with the claw plate 4 are integrally fixed to the upper portion between the support plates 10 with bolts and nuts 11 or the like. Also, a claw plate 5 for preventing tilting in the left-right direction.
3 is slidably disposed between a pair of guide plates 13 having a substantially inverted L-shaped cross section attached to the lower surface of the footrest plate 2 with bolts and nuts 12 or the like as shown in FIG. The engaging member 7 that engages with the plate 5 is non-rotatably attached to a lower surface of a substantially central portion of the footrest plate 2 with a screw 14 or the like as shown in FIGS. As shown in FIG. 3, the upper portions of the support plates 10, 10 are rotatably engaged with and held by circular protrusions 7a formed integrally with the upper portions of the engaging members 7, and
In the lower part between 3 and 13, a roller 15 that is in contact with the inner peripheral surface of the claw plate 5 is rotatably provided.

A universal joint 20 is provided at the center of the inclination of the grounding plate 1 with respect to the footrest plate 2, that is, at the position where the center axes of the horizontal shafts 8a and 9a, which are the tilting axes of the claw plates 4 and 5, intersect. In this embodiment, the universal joint 20 is shown in FIGS.
As shown in FIG. 1, a ball joint composed of a concave spherical body 21 and a spherical body 22 fitted thereto is used. The concave spherical body 2
Reference numeral 1 denotes upper and lower halves 21a and 21b, which are attached to the upper surface of the substantially central portion of the ground plate 1 with bolts and nuts 23.

[0014] the sphere 22 tilt shaft 22a is integrally provided on the tilt shaft 2 2a is slidably fitted in the cylindrical member 24 provided integrally by welding or the like to the lower end of the support plate 10, 10 Are held together. A compression coil spring 25 is compressed between a spring receiver 22b provided integrally with the tilt shaft 22a and a lower end surface of the support plate 10. The spring 25 urges the grounding plate 1 and the footrest plate 2 to move away from each other, and when the foot is pulled up, the engagement members 6 and 7 are engaged as shown in FIGS. The engagement between the locking pawls 6a and 7a and the locking pawls 4a and 5a of the pawl plates 4 and 5 is released, and the grounding plate 1 and the footrest plate 2 can tilt in the front-rear direction and the left-right direction with respect to each other.

Further, a pair of left and right movable spikes 16 are provided on the front side and the rear side of the claw plate 4 for preventing tilting in the front-rear direction, respectively. The spikes 16 are connected to the ground plate 1 by bolts and nuts not shown. The horizontal axis 1 is determined by the bearing member 17 attached.
7a can be tilted left and right around the center. At the top of the pair of left and right spikes 16
A link 18 which is substantially parallel to the link 18 is swingably connected via a connection shaft 18a, and a center portion of the link 18 is rotatably connected to the claw plate 4 by a shaft pin 18b. In the figure, 2
Reference numeral 6 denotes auxiliary spikes formed of bolts and the like provided at both front and rear ends of the ground plate 1, and is fixed to the ground plate 1 by nuts 27 and attached thereto.

In the above configuration, when working on a slope such as an orchard, for example, as shown by a chain line in FIGS. 1 and 2, the foot is placed on the footrest plate 2 while wearing the shoes S, for example.
It is fixed with tightening bands B1 and B2. When the foot is lifted from the ground in this state, the ground plate 1 and the claw plates 4 and 5 move downward by their own weight and the spring 25, and as shown in FIGS. The engagement between the locking claws 4a, 5a and the locking claws 6a, 7a of the engaging members 6, 7 is released. At this time, the tilting shaft 22a provided integrally with the sphere 22 of the universal joint 20 descends straight along the inside of the cylindrical body 24, and can prevent the ground plate 1 from shifting in the left-right direction or the front-back direction.

When the ground plate 1 continues to descend, the guide plate 1
The inner circumferential surface of the claw plate 4 for preventing tilting in the left-right direction abuts against the roller 15 provided between 3 and 13, and the grounding plate 1 is moved forward and backward with respect to the footrest plate 2 around the universal joint 20. It is possible to freely tilt in the left and right direction. In that state,
For example, when the ground plate 1 is lightly abutted on the ground G inclined in the left-right direction as shown in FIG. 3, the ground plate 1 moves along the inclination of the ground G around the horizontal axis 8a of the bearing member 8 in FIG. Tilt clockwise. Also at this time, the ground plate 1 tilts around the universal joint 20 and can be prevented from shifting in the left-right direction or the front-back direction.

When the ground plate 1 is tilted along the ground G as described above, the claw plate 4 for preventing tilting in the left-right direction slides between the guide plates 13 and tilts integrally with the ground plate 1. The claw plate 5 for preventing tilting in the front-rear direction is supported by the supporting plate 10 without tilting.
-It is in a state of standing up and down substantially between the ten. Also, the movable spike 1 on the right side in FIG.
6 moves downward, and the left movable spike 16 moves upward, but the link 18 tilts in the same direction about the shaft pin 18b while keeping parallel to the ground plate 1, and the link 18 and the ground plate 1 and Left and right movable spikes 16 · 1 paired with each other
6 act as parallel links and move spikes 16
- 16 direction substantially orthogonal to constantly footboards 2 regardless tilting Grounding plate 1, that is, held in a state of being erected substantially vertically.

In this state, when the foot is pushed down while the footrest plate 2 is kept substantially horizontal, the cylinder 24 provided on the footrest plate 2 side descends along the tilting shaft 22 a of the universal joint 20. The footrest plate 2 moves down straight against the spring 25, and the locking claw 6a of the engaging member 6 engages with the locking claw 4a of the claw plate 4 for preventing tilting in the front-rear direction. At the same time, the locking claw 7a of the engaging member 7 engages with the locking claw 5a of the claw plate 5 to prevent the footrest plate 2 from tilting in the left-right direction. When the footrest plate 2 is further pressed down in this state, the movable spikes 16 and the auxiliary spikes 26 bite into the ground G to prevent the skid from slipping, so that the user can walk while keeping the feet substantially horizontal.

When the ground G is inclined in the front-rear direction as shown in FIG. 4, after the ground plate 2 is inclined along the ground in the same manner as described above, the locking of the claw plates 4 and 5 is performed. Nail 4a / 5a
Is engaged with the locking claws 6a, 7a of the engaging members 6, 7, so that the footrest plate 2 can be kept substantially horizontal. Further, even when the footrest plate 2 is inclined in both the left-right direction and the front-back direction, the footrest plate 2 can always be kept substantially horizontal. Thereby, regardless of the inclination of the grounding plate 1 on the slope, the footrest plate 2 is always kept substantially horizontal, and the stability of the feet can be ensured satisfactorily.

When the ground G is inclined in both the front-rear direction and the left-right direction of the footrest plate 2 as described above, the plate surface of the forward-backward tilt preventing claw plate 4 and the left-right direction The plate surface of the tilt-preventing claw plate 5 is not orthogonal to each other, and the claw plate 4 is subjected to an action of shifting in a direction other than the orthogonal direction with respect to the claw plate 5. By being rotated about the circular convex portion 7a of the engaging member 7 with respect to the footrest plate 2 together with 10.10, it is absorbed.

In the above embodiment, the ball joint is used as the universal joint.
For example, a so-called cross joint or hook type universal joint can be used.

[0023]

As described above, the present invention comprises the grounding plate 1 on the ground side and the footrest plate 2 disposed above the grounding plate 1 at a predetermined interval, and is provided on a slope. The ground plate 1
In the assisting device for walking on a sloping ground, which can always hold the footrest plate 2 substantially horizontally irrespective of the inclination of the footrest plate 2, the footrest plate 2 and the grounding plate are located at the center of the tilting of the grounding plate 1 with respect to the footrest plate 2. Universal joint 20 for tiltably connecting the first and the second.
Is provided, when the grounding plate 1 is tilted along the slope, it is possible to reliably tilt without causing displacement or rattling, and it is possible to provide an assisting device for walking on a slope with good stability and operability. effective.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an assisting tool for walking on a slope according to the present invention.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a front view showing a use state on a sloping ground in the left-right direction.

FIG. 4 is a side view showing a use state on a sloping ground in the front-rear direction.

DESCRIPTION OF REFERENCE NUMERALS 1 grounding plate 2 footrest plate 4 claw plate for preventing forward / backward tilting 5 claw plate for preventing left / right tilting 4a, 5a locking claw 6, 7 engaging member 6a, 7a locking claw 10 support plate 20 Universal joint 21 Concave sphere 22 Sphere 22a Tilting axis 24 Cylindrical body 25 Spring S Shoes G Ground

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A43C 15/00-15/18 A43B 13/22 A43B 5/00-A43C 5/18

Claims (3)

(57) [Claims] 1. A grounding plate on the ground side, and a footrest plate disposed at a predetermined interval above the grounding plate, wherein the footrest plate is provided regardless of tilting of the grounding plate on a slope. In an assisting device for walking on a sloping ground that can always be held substantially horizontally, a universal joint is provided at a tilting center position of the grounding plate with respect to the footrest plate so as to tiltably connect the footrest plate and the grounding plate. An assisting device for walking on a slope, characterized by the following. 2. The aid for walking on a slope according to claim 1, wherein a ball joint composed of a concave spherical body and a spherical body fitted thereto is used as the universal joint. 3. The grounding plate and the footrest plate are configured to be tiltable in the front-rear direction and the left-right direction with respect to each other, and each of the grounding plate and the footrest plate has a large number of locking claws in a circumferential direction. A substantially semi-circular forward-backward and left-rightward tilt-preventing claw plate is provided so as to be tiltable with respect to the grounding plate or the footrest plate, and is selectively engaged with a locking claw of each claw plate. Provided with an engagement piece with an engagement claw that always keeps the footrest plate substantially horizontal regardless of the tilting of the grounding plate on a sloped ground, and at the intersection of the tilting center axes of the both tilting prevention claw plates, a concave spherical body A ball joint comprising a sphere fitted to the sphere is disposed, and a tilt shaft integrally provided with the sphere is slidably fitted to a cylinder integrally provided on the footrest plate side. Item 2. The assistive device for walking on a slope according to Item 2.