CN104688496A - Four-foot walking stick capable of lowering stumbling risks of old person - Google Patents

Abstract

A four-legged crutch that reduces the risk of the elderly tripping. The four legs protruding from the four corners of the pedestal, in addition to the fixed pedestal, are also provided at the corner closest to the human foot to rotate around the vertical axis of the pedestal. The movable support pin, the movable support pin stays in the position that resists with the blocking post at ordinary times under the effect of the coiled spring. When the crutch falls to the ground, due to gravity, the movable support can only move horizontally, so it can bear the force from top to bottom; but when the old man is carrying the stick forward and his body is most unstable, the human foot kicks the movable support , because the movable support feet break away from the ground friction at this time, the horizontal resistance of the movable support feet is not enough to make the elderly trip. Rollers can also be provided on the grounding of the movable legs, so that in addition to the time node when the elderly are prone to tripping, when the four-legged crutches are laid down flat, the elderly can also kick the movable legs. Due to the action of the rollers, the movable legs can The friction with the ground is reduced, and the kicking resistance will also be reduced, so that the risk of the elderly tripping is minimized.

Description

A four-legged cane that reduces the risk of tripping for the elderly

technical field

The invention relates to the field of nursing equipment, in particular to a four-legged crutch for reducing the risk of tripping by the elderly.

Background technique

As we all know, old people often use crutches in order not to fall, and four-legged crutches have four fixed legs. It stretches in the four directions of front left, front right, back left, and back right, and it touches the ground through four anti-slip sleeves. Because it is supported on the ground like the four feet of a stool, it is not easy for the old man to shake the crutch when he walks. Four-legged crutches have almost become an essential tool for the elderly to walk today. When an old man walks with a four-legged cane, he usually lifts it up and lays it flat. For a person holding a cane with his right hand, the position of the four legs is the same. In order not to make the right foot stand too close to the foot, the crutch column is always installed on the side of the base plate close to the person, but if the stick column is made too close to the human foot, it will make the support point of the stick column deviate from the center of the base plate , Just like when a person sits on the edge of a stool, it is easy to fall over, and the advantage of four-legged crutches does not exist. Therefore, although the design of the rear left leg of the four-legged crutch has paid attention to maintaining a distance from the human foot, due to the above-mentioned factors, it can only be much closer to the human foot than the ordinary crutch. Some old people just use the four-legged crutch I was tripped by the support foot close to the human foot. The author witnessed the old man using and tripping. When the old man put the four-legged crutch down on the ground, due to the gravity of the body, it fell on the four-legged crutch, even if the foot was against the crutch. With a little side strap, the four-legged crutch can support the human body without falling down; when the old man lifts the four-legged crutch, because the crutch is most likely to shake at this time, the old man's footing is unstable, and it is very easy to touch the ground near the foot. Although the four-legged crutches are not heavy, due to the effect of the grip, when the human foot kicks on the support feet, the rebound force is also very strong, so it can cause the elderly to trip. Some elderly people give up using four-legged crutches because they are afraid of tripping, because once the crutches trip the elderly, there will often be serious dangers. Now some people are just begging to buy crutches that are not easy for the elderly to stumble on the Internet, but there are no such products on the market at present. But there are more and more old people, if can create a kind of four-legged crutch that makes the old people not easy to stumble, it is very beneficial undoubtedly.

Contents of the invention

The purpose of the present invention is: to make the four-legged crutches can be stably supported, and it is not easy for the elderly to stumble.

The purpose of the present invention is achieved like this: it comprises a four-legged crutch, and the stick column of the four-legged crutch is fixed on a square base plate at the bottom by an adjustment tube, and there are four braces at the four corners of the base plate, and it is characterized in that: In addition to the fixed support feet with anti-slip sleeves, there is also a movable support foot that can rotate horizontally around a vertical axis on the corner near the foot of the person holding the stick. On the far side of the human foot, outside the vertical shaft is a bushing with a lubricating device. The bushing can rotate horizontally around the vertical shaft with the movable legs fixed to it. There is a coil spring between the bushing and the vertical shaft. Under the action of the spiral spring at ordinary times, the movable support foot rotates to offset against the retaining column affixed to the column foot plate.

Like this, movable support foot is owing to stay in the position with blocking post at ordinary times under the spring force effect of spiral spring, and the movable support foot of this moment just is distributed in the four jiaos of column base plate together with fixed support foot. When the old man lifts the above-mentioned four-legged crutches and needs to move forward, the general old man will lift the crutches flat and lay them flat. Due to the gravity facing the ground, the axle sleeves and vertical shafts of the movable legs are structures that can only move horizontally, so it can bear the force from top to bottom. But when the old man moves forward with the cane, the most likely time for the old man to stumble when using the crutch is when the old man lifts the cane but has not yet put it down. Foot support, because the movable support foot and the column foot plate with the crutches of the staff are slidably connected by the axle sleeve and the vertical shaft, so that the resistance of the movable support foot to the human foot is reduced, and the old man is not easy to fall. And because the vertical axis of the movable support foot is fixed on the position of the column foot plate far away from the outside of the human foot, this not only makes the kicking direction and the rotation direction of the movable support foot basically consistent; The increase in length can also reduce the kicking resistance; there can also be rollers on the ground of the movable feet, so that in addition to the time when the elderly are prone to tripping, when the four-legged crutches are laid down flat, if the elderly also kick When the movable foot happens, the friction between the movable foot and the ground can be reduced due to the action of the rollers, and the resistance when kicking will also be reduced, so that the risk of the elderly tripping is minimized to the greatest extent.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

Fig. 2 is a diagram along the line A of Fig. 1 .

Detailed ways

1 in Figure 1 represents the anti-slip sleeve, 2 represents the fixed support, 3 represents the column foot plate, 4 represents the adjustment tube, 5 represents the stick column with the adjustment screw, 6 represents the handle, 7 represents the vertical shaft, and 8 represents the retaining column. 9 represents movable support pin, and 10 represents roller. The stick post 5 in the figure is covered with a grip handle 6, the stick post 5 is inserted into the upper part of the adjustment tube 4, and the lower end of the adjustment tube 4 is fixedly connected to the middle of the post base plate 3 and is biased towards the outside of the paper. The three corners of the post base plate 3 Three fixed legs 2 are fixed on the top, and the fixed legs 2 are covered with anti-skid layer 1. The column foot plate 3 is equipped with movable legs 9 on the right and outward positions of the paper, and rollers 10 are arranged on the movable legs. The support pin can rotate horizontally around the upper shaft 7, and is blocked by a stop post 8 fixed on the right outer corner of the column foot plate 3. For the whole structure of the movable legs, please see the A view in Fig. 1.

Figure 2 is the view of A in Figure 1. In the figure, 11 is the gap, 12 is the shaft sleeve, 8 is the vertical shaft, 3 is the column foot plate, 13 is the upper lubricating filler, 14 is the upper hole of the shaft sleeve, and 15 is the coil spring Hole, 16 is spiral spring, and 17 is the lower hole of axle sleeve, and 18 is lower lubricating filler, and 19 is that axle tail reaches post, and 9 is retaining post, and 10 is movable support pin. Block post 9 and vertical shaft 8 are all tightly inserted in the column base plate among the figure, and it is affixed. Movable support foot 10 and shaft sleeve 12 are fixedly connected, and the shaft sleeve is inserted into the vertical shaft 8 through the upper hole 14 of the shaft sleeve and the lower hole 17 of the shaft sleeve, and is slidingly matched with the vertical shaft 8. The vertical shaft 8 is also worn as a lubricating device The upper lubricating sheet 13 and the lower lubricating sheet 18 are respectively located above and below the shaft sleeve. The middle section of the vertical shaft 8 is also wound with a coil spring 16. One end of the coil spring 16 is inserted into the coil spring hole 15 of the vertical shaft 8, and the other end is inserted into the Behind the shaft sleeve (see dotted line), under the action of the coil spring 16, the shaft sleeve 12 is rotated outward until it is blocked by the stop post 9. Since the torque of the coil spring is small, the torque should not exceed that of an ordinary old man when walking. The resistance that will not be tripped is the selected amount (generally no more than 4 Nt). The shaft end column 19 is the lower part of the vertical shaft 8, and the distance between the upper edge of the shaft end column 19 and the lower edge of the column foot plate 3 is slightly larger than the shaft sleeve 12, the upper lubricating pad 13 and the lower lubricating pad 18. The sum of the heights (generally a gap of 1 mm larger), the height of the upper lubricating sheet 13 is generally 2 mm, which determines the height of the gap 11, due to the existence of the gap 11, the movable support 10 will not rub against the base plate during rotation 3. Since the sliding fit between the shaft sleeve hole and the vertical shaft is relatively tight, ready-made ball bearings can also be used to replace them. The replacement method is to closely match the inner hole of the bearing with the vertical shaft 8, and the shaft sleeve 12 is tightly fitted on the bearing outer shell. Two lubricating sheets can be omitted, and the spiral spring still wears in the vertical shaft, but is moved to the bearing below, and the effect remains unchanged.

Claims (1)

1. A four-legged crutch that reduces the risk of tripping by the elderly, which includes a four-legged crutch, the pole of the four-legged crutch is fixed on a square base plate at the bottom through an adjustment tube, and there are four legs at the four corners of the base plate , it is characterized in that: in addition to the fixed support feet with anti-slip sleeves, there is also a movable support foot that can rotate horizontally around a vertical axis on the corner near the foot of the person holding the stick. It is fixed at a position far from the outside of the foot plate of the column. Outside the vertical shaft is a bushing with a lubricating device. The bushing can rotate horizontally around the vertical shaft with the movable legs fixed to it. The bushing and the vertical shaft There is a spiral spring between them, usually under the action of the spiral spring, the movable support foot rotates to offset the retaining column fixedly connected on the column foot plate.