CN2766116Y - Worm wheel - Google Patents

Abstract

The utility model provides a novel worm wheel which belongs to the technical field of machinery. The utility model overcomes the insufficiencies of poor anti-gluing ability, easy generation of pitting and abrasion, large noise and high manufacturing cost of the traditional worm wheel existing during the use process. The novel worm wheel is composed of wheel rim and a wheel core, wherein the wheel core is placed at the center of the worm wheel and is made of metal materials adopted in the utility model; a through hole is arranged in the wheel core; the wheel rim is fixedly connected with the outer side surface of the wheel core; the wheel rim is made of plastics adopted in the utility model; the outer side surface of the wheel rim is provided with gear teeth used for being engaged with a worm. In the novel worm wheel, because the wheel rim is made of the plastics adopted in the utility model, when the worm wheel is matched with the worm to be used, the affinity among the materials is very low, the phenomena of gluing and adhering can not be generated, and the phenomenon of pitting can not occur on the surface of the worm wheel. The utility model has the advantages of high speed reduction ratio, low working noise and simple processing technology for the product.

Description

New type worm wheel

Technical field

The utility model belongs to field of mechanical technique, particularly a kind of worm gear of new structure.

Background technique

The mechanical structure that worm gear cooperates with worm screw has a wide range of applications in mechanical transmission.Traditional worm gear is to adopt single softer metals to make, in use exist antiscuffing capacity poor, easily spot corrosion and abrasion, noise is big, manufacture cost is high deficiency take place.Particularly need in the driving mechanism of small-power and big retarding ratio at some, as force aid system of automobile etc., these defectives of traditional worm gear will directly influence its normal use.

Summary of the invention

The purpose of this utility model is at the existing the problems referred to above of existing worm gear, and a kind of new type worm wheel is provided, and makes its can be anti-bonding, anticorrosive and wear-resistant, and have that noise is low, good mechanical property, reliable and stable characteristics.

The purpose of this utility model can realize by following technical proposal: this new type worm wheel is made up of wheel rim and core wheel, core wheel is in the center of worm gear, core wheel adopts metallic material to make, a through hole is arranged in the core wheel, wheel rim is fixed on the outer side surface of core wheel, wheel rim adopts plastics to make, and the outer side surface of wheel rim is useful on the teeth with worm meshing.

In above-mentioned new type worm wheel, it is that material is made that described wheel rim adopts nylon.

In above-mentioned new type worm wheel, it is that material is made that described core wheel adopts carbon steel.

Compared with prior art, advantage of the present utility model is:

1, adopt plastics to make because the wheel rim of this new type worm wheel is a working surface, when it used with the worm screw pairing of adopting metallic material to make, the affinity between the material was very low, can not produce gummed and bonding phenomenon, the stationarity of work is good, and does not need fluid when work, has self-lubricating function.

2, in this new type worm wheel, because the plastics of wheel rim are macromolecular structures, when being rubbed, it and worm screw can not produce particle, can spot corrosion not take place on the surface, therefore prolonged the working life of product greatly.

Have higher reduction speed ratio when 3, new type worm wheel and metal worm screw are used, and operating noise is very low.

4, this new type worm wheel its wheel rim when producing is 1/4th of the bronze common worm gear of making of employing with plastics, core wheel with materials such as carbon steel, the cost of product, and the technology of processing is simple, has higher utility.

Description of drawings

Fig. 1 is the plan view of the new type worm wheel that provides of the utility model.

Fig. 2 is the sectional view of the new type worm wheel that provides of the utility model.

Among the figure, 1, core wheel; 11, through hole; 2, wheel rim; 21, teeth.

Embodiment

As depicted in figs. 1 and 2, this new type worm wheel is made up of wheel rim 2 and core wheel 1.Core wheel 1 is in the center of worm gear, adopts metallic material to make.In the present embodiment, it is material that core wheel 1 adopts carbon steel.Core wheel 1 center is a through hole 11.Wheel rim 2 is fixed on the outer side surface of core wheel 1, and it is material that wheel rim 2 adopts nylon.The outer side surface of wheel rim 2 has teeth 21, is used for being meshed with worm screw.

After the driving mechanism of worm and gear adopted this new type worm wheel, the noise of work was very little, and had higher reduction speed ratio, was particularly suitable for using in the automobile force aid system.

Claims (3)

1, a kind of new type worm wheel, it is characterized in that, this new type worm wheel is made up of wheel rim (2) and core wheel (1), core wheel (1) is in the center of worm gear, core wheel (1) adopts metallic material to make, and a through hole (11) is arranged in the core wheel (1), and wheel rim (2) is fixed on the outer side surface of core wheel (1), wheel rim (2) adopts plastics to make, and the outer side surface of wheel rim (2) is useful on the teeth (21) with worm meshing.

2, new type worm wheel according to claim 1 is characterized in that, it is that material is made that described wheel rim (2) adopts nylon.

3, new type worm wheel according to claim 1 is characterized in that, it is that material is made that described core wheel (1) adopts carbon steel.

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