A kind of quadropods reducing old man's trip hazardsTechnical field
The present invention relates to nursing device field, specifically a kind of quadropods reducing old man's trip hazards.
Background technology
As everyone knows, old man is not in order to fall, often crutch is used in walking, and quadropods has four fixing spikes, the upper end of four spikes is connected with the heel slab of cane post bottom, bottom is as discussed towards direction by holding cane people, then stretch towards front left, front right, rear left, rear right four direction, and landed by four Anti-slip covers, ground is supported in due to four feet that it resembles stool, therefore pin crutch when old man walks not easily to rock, this quadropods has almost become the necessary tool of old man's walking now.All generally that flat carrying keeps flat when old man walks with quadropods, four spike positions are as held the people of cane by the right hand, wherein that spike of rear left from people's foot recently, is also the most easily kicked by the right foot of old man, in order to not make the too near spike of right foot, the cane post of crutch is always contained in the side of heel slab by people, if but cane post is done from people's foot too close to, it will make cane post support force depart from heel slab center, resemble the edge that people is sitting in stool, also hold easy to fall down, the advantage of quadropods is not just present in.Though therefore noted during the design of that spike of quadropods rear left keeping and people's foot distance, but owing to limitting by above-mentioned factor, can only be more many close to people's foot than ordinary canes foot, some old man is tripped by that spike close to people's foot when using quadropods, the author parent people that is aged uses and trips process, when old man keeps flat quadropods on ground downwards, because health gravity drops on quadropods, even if foot is to crutch slightly side band, body support also can live and unlikelyly fall by quadropods; And when old man mentions quadropods time, because at this moment crutch the most easily rocks, old man bases oneself upon shakiness, just very easily touch the spike of nearly foot, although quadropods does not weigh, due to the effect of grip, people kicks on spike enough, and bounce is also very large, therefore old man can be made to trip.Some old men are afraid of exactly to trip and abandon using quadropods, because crutch is once trip old man, usually there will be great dangerous situation.Some people just wants to buy the crutch not easily making old man trip on the net now, but there is no this series products in the market.But old people gets more and more, if the quadropods that a kind of old people of making not easily trips can be created, very useful beyond doubt.
Summary of the invention
The object of the invention is: make quadropods can stable support, be not easy again old man is tripped.
The object of the present invention is achieved like this: it comprises a quadropods, the cane post of quadropods is fixed on the square heel slab in one piece, bottom by adjustable pipe, there are four spikes the corner of heel slab, it is characterized in that: except the fixing spike of band Anti-slip cover, also have near holding on the nearer angle of cane people side foot, also be provided with the movable supporting feet that can horizontally rotate around vertical pivot, described vertical pivot is fixed on heel slab from the position away from people's foot outside, it is the axle sleeve with lubricating arrangement outside vertical pivot, axle sleeve can be done to horizontally rotate around vertical pivot with the movable supporting feet affixed with it, have between axle sleeve and vertical pivot and revolve spring, at ordinary times under the effect of revolving spring, movable supporting feet rotates and offsets to the bumping post be fixed on heel slab.
Like this, movable supporting feet owing to resting on the position that to offset with bumping post at ordinary times under the spring force effect of revolving spring, and movable supporting feet now is just distributed in the corner of heel slab together with fixing spike.When old man mention above-mentioned quadropods need advance forward time, general old man all can by flat for crutch carry keep flat time, because gravity is to ground, the axle sleeve of movable supporting feet and vertical pivot be can only level to the structure of activity, therefore it can bear power from the top down.But when old man proposes cane advance, owing to using what the most easily make old man trip during quadropods to be to be mentioned by crutch old man and on the timing node that not yet puts down, at this moment because the advancing foot of old man contacts the movable supporting feet of quadropods, owing to being slidably connected by axle sleeve and vertical pivot between movable supporting feet and the heel slab with staff grip crutch, this reduces the resistance of movable supporting feet to people's foot, old man just not easily falls.Again because the vertical pivot of movable supporting feet is fixed on heel slab from the position away from people's foot outside, this not only makes foot play direction and movable supporting feet rotation direction is basically identical; And foot also can be made according to the principle of lever to play drag reduction owing to increasing as the movable supporting feet length of the arm of force; Roller can also be provided with in addition at the ground connection place of movable supporting feet, such old man is except the timing node easily tripped, when quadropods keeps flat downwards, if old man also has the generation kicking movable supporting feet situation, then because the effect of roller can make movable supporting feet and ground friction reduce, resistance when foot is played also will reduce, and the risk so also just to greatest extent old man being tripped drops to minimum.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is that the A of Fig. 1 is to diagram.
Detailed description of the invention
In Fig. 11 represents Anti-slip cover, and 2 represent fixing spike, and 3 represent heel slab, and 4 represent adjustable pipe, and 5 represent the cane post with set screw, and 6 represent handle, and 7 represent vertical pivot, and 8 represent bumping post, and 9 represent movable supporting feet, and 10 represent roller.On cane post 5 in figure, cover has handle 6, cane post 5 inserts adjustable pipe 4 top, adjustable pipe 4 lower end is fixed in the centre of heel slab 3 and is partial on the position in the outer direction of paper, three angles of heel slab 3 are installed with three fixing spikes 2, fixing spike 2 upper cover skid resistant course 1, and heel slab 3, by movable supporting feet 9 is equipped with in the paper right side and outside position, is equipped with roller 10 above movable supporting feet, movable supporting feet can horizontally rotate around upper axle 7, and the bumping post 8 be fixed on the right outside angle of heel slab 3 stops.The entire infrastructure of movable supporting feet, please see Figure the A view in 1.
Namely Fig. 2 is the A view in Fig. 1, and in figure, 11 is gaps, and 12 is axle sleeves, and 8 is vertical pivots, and 3 is heel slabs, 13 is upper pad, and 14 is holes on axle sleeve, and 15 is revolve spring hole, and 16 is revolve spring, and 17 is axle sleeve lower opening, 18 is lower pad, and 19 is that axle tail supports post, and 9 is bumping posts, and 10 is movable supporting feets.In figure, bumping post 9 and vertical pivot 8 are all tightly inserted in heel slab, and it is affixed.Movable supporting feet 10 and axle sleeve 12 affixed, axle sleeve is inserted in vertical pivot 8 by hole on axle sleeve 14 and axle sleeve lower opening 17, join with vertical pivot 8 is sliding, the upper lubrication sheet 13 as lubricating arrangement and lower lubrication sheet 18 is also installed with in vertical pivot 8, they are in axle sleeve upper and lower respectively, vertical pivot 8 stage casing is also wound with revolves spring 16, revolve spring 16 1 termination insert vertical pivot 8 revolve in spring hole 15, another termination is inserted in (see dotted line) after axle sleeve, under the effect of revolving spring 16, make axle sleeve 12 to paper external rotation, until blocked by bumping post 9, because the torsion revolving spring is less, this torsion can not by the resistance that trips for choosing amount (being generally no more than 4 Ns of tons) to be no more than when general old man walks.Axle tail supports the tail lower part that post 19 is vertical pivots 8, axle tail supports the distance between the upper edge of post 19 and heel slab 3 times edges, slightly larger than the sum (generally the gap of large 1 millimeter) of axle sleeve 12, upper pad 13 and lower pad 18 three height, the height of upper lubrication sheet 13 is generally 2 millimeters, it determines the height in gap 11, due to the existence in gap 11, movable supporting feet 10 can not wipe touching column sole 3 in rotating.Because the cunning of axle sleeve hole and vertical pivot is joined tightr, therefore also can be replaced them with ready-made ball bearing, the method replaced is by brearing bore and vertical pivot 8 close-fitting, axle sleeve 12 close-fitting is on bearing outside, two lubrication sheets can save, revolve spring to be still through in vertical pivot, just move to below bearing, act on constant.