CN2378263Y

CN2378263Y - Wheels for light hand-pulling cart

Info

Publication number: CN2378263Y
Application number: CN 99238027
Authority: CN
Inventors: 雷艺
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-01
Filing date: 1999-07-01
Publication date: 2000-05-17
Anticipated expiration: 2009-07-01

Abstract

The utility model provides a wheel for a light manpower handcart, a big wheel of which is formed by fixedly connecting three small wheels through angles of support frames, etc. The wheel has the advantages of compact structure, reasonable design and simple manufacture, and can be arranged on light manpower handcarts of various kinds. The utility model not only can be used on flat roads or roads with slopes, but also can be particularly used for going up and down on steps or staircases easily and freely under the pull of a person. Therefore, the utility model reduces the labor intensity of people. The wheel is particularly suitable for manpower hand-drawn buggies, baby handcarts, etc.

Description

Light manpower hand buggy wheel

The utility model relates to a kind of wheel, especially a kind of wheel that is used on the hand-held design manpower hand buggy.

At present, the wheel structure of all kinds of light manpower hand buggys is the same substantially, or little or be common circular wheel greatly.The hand buggy that circular common wheel is installed can adapt to the road conditions in smooth or ramp, but under special road conditions, for example runs into step or stair, needs car to jump when upper and lower, just can not normally use, and need abandon car and come object on the transport trolley by the people.

The purpose of this utility model provides a kind of reasonable in design, compact conformation, is installed on all kinds of light manpower hand buggys, can not only walk level road, especially easily the light manpower hand buggy wheel of up/down steps or stair.

Architectural feature of the present utility model is: by 3 steamboats by the support equal angles bull wheel that is composed of a fixed connection.The center of bull wheel is that core wheel is the axle center of axletree, and three common steamboats pass through Font, the angle of being separated by are that 120 ° support couples together, when on the road in smooth or ramp, using, wherein two work of three steamboats, another one is soared and is not worked, only when upper and lower step or stair, just overturn in turn, roll upwards, downwards and rotation work by three wheels.

The utility model compact conformation, reasonable in design, be easy to make, be installed on all kinds of hand-held design manpower hand buggys, can not only be smooth or have on the road in ramp and use, especially can be under people's traction up/down steps or stair easily, alleviated people's labour intensity.Be specially adapted to manpower and pull pony truck, baby stroller etc.

Elaborate below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation.

Fig. 2 is the A-A face cutaway view of Fig. 1.

Shown in the figure, 1, small wheels 2, support 3, bearing or lining 4, axletree hole 5, lock pin 6, reinforced rib 7, wheels glue 8, bearing or lining 9, little wheel shaft.

The utility model is by support (2) the equal angles bull wheel that is composed of a fixed connection by 3 steamboats (1).Whole profile of taking turns is an equilateral triangle, and support (2) is Font, angle between support and the support is 120 °, carriage center is the axletree axle center, it also is the core wheel of bull wheel, the bearing that use in the axle center can be selected needle roller for use or roll different bearing or lining, the paraxial heart of support-hold to be cylindrical or hollow tubular structures, and with reinforced rib (6), an outer end of support is " Qian " shape structure, and steamboat (1) passes through in rack-mount " Qian " shape structure of bearing wheel shaft lock pin.

Principle of work of the present utility model is:

When on flat road, using, three wheels wherein two do to roll around self center-point and advance, the another one wheel soars and does not work.When wheel rolling to have step local time, 1 wheel is subjected to the prevention of step vertical surface and can not advances, this moment is under the effect of tractive force, it is that centre of gration (fulcrum) upwards rotates forward that whole bull wheel begins with 1 wheel bearing, in the close higher level's step plane of the 2nd wheel, the 3rd wheel also leave gradually primary plane to higher level's step by going, the center of gravity of car is also by 1,3 are transferred to 2 between taking turns gradually, 1 take turns between, under the continuation effect of tractive force, 2 take turns higher level's step plane and roll forward, and 1 takes turns also and scrolls up, and 3 take turns and soar, take turns when being subjected to that the upper class step vertically stops again up to 2, just repeat above-mentioned action and work on.

Claims

1, a kind of light manpower hand buggy wheel comprises wheel axle center, bearing or lining, wheel glue and wheel rim, it is characterized in that: by 3 steamboats (1) by support (2) the equal angles bull wheel that is composed of a fixed connection.