CN201902532U - Duplicate gear - Google Patents

Abstract

The utility model provides a duplicate gear, which is provided with a first gear and a second gear, wherein the first gear and the second gear are integrated and have the same gear parameter; the midline of each gear tooth of the first gear is respectively superposed with the midlines of each two adjacent gear teeth of the second gear; the first gear is connected with the second gear through a middle small diameter; the middle small diameter is axially provided with copper nuts; the duplicate gear adopts polyformaldehyde material. The integral duplicate gear adopted by the utility model has low cost, and is convenient to assemble, reliable to use and favorable for mass production.

Description

Duplicate gear

Technical field

The utility model relates to a kind of driving gear combination, the duplicate gear that uses on particularly a kind of glass washer-drier.

Background technique

The gear of uploading that uses on the existing glass washer-drier is one first nylon gear 1 (see figure 1) and one second nylon gear 2 (see figure 2)s (see figure 3) that is assembled.

The gear teeth of first nylon gear 1 adopt the machining moulding, are difficult to guarantee the degree of symmetry requirement during processing inner hole key slot.The axially processing inconvenience of 3-M6 screw also porose position restriction.Radially the M6 screw is for the axial spacing usefulness in assembling back, because the nylon screw strength is low and unreliable.

The gear teeth of second nylon gear 2 (seeing figure) adopt the machining moulding, are difficult to guarantee the degree of symmetry requirement during processing inner hole key slot.

The processing inconvenience of screw also porose position restriction.The assembling back can occur loosening or locate unreliable phenomenons such as inaccurate because the nylon screw strength is low.

This structure manufacture difficulty is big in a word, and the cost height is unfavorable for producing in batches, all inconvenience of assembling and use, therefore necessary the improvement.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is: a kind of integrated type duplicate gear is provided, can reduces cost, and easy to assembly, use reliably, be convenient to produce in enormous quantities.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of duplicate gear, it has first gear and second gear, described first gear and second gear are one-body molded, and first gear is identical with the gear parameter of second gear, and the center line of each gear teeth of first gear coincides with the center line of per two adjacent teeth of second gear respectively.

Described duplicate gear wherein, connects by middle path between first gear and second gear, and described middle path axially presets copper nut.

Described duplicate gear, wherein, described duplicate gear adopts polyformaldehyde material.

Compared with the prior art, adopt the advantage that the utlity model has of technique scheme to be:

1, becomes two parts and be convenient to production management into a part;

2, the molding and forming by plastic mould, element precision guarantee easily, are more convenient for producing in batches;

3, easy to assembly, use reliable.

Description of drawings

Fig. 1 is the plan view of first nylon gear in the background technique;

Figure 1A is the side view of Fig. 1;

Fig. 2 is the plan view of second nylon gear in the background technique;

Fig. 2 A is the side view of Fig. 2;

Fig. 3 is the plan view of the gear assembly in the background technique;

Fig. 3 A is the side view of Fig. 3;

Fig. 4 is the plan view of first gear in the duplicate gear of the present utility model;

Fig. 4 A is the side view of duplicate gear of the present utility model;

The plan view of second gear in Fig. 4 B duplicate gear of the present utility model.

Description of reference numerals: 1-first nylon gear; 2-second nylon gear; 10-first gear; 20-second gear; Path in the middle of the 30-; The 40-copper nut.

Embodiment

About the utility model is the application target that reaches above-mentioned and effect and the technological means that adopted, now enumerate preferable feasible embodiment, and shown in the conjunction with figs., details are as follows:

Shown in Fig. 4, Fig. 4 A and Fig. 4 B, be respectively the plan view of first gear in the duplicate gear of the present utility model, the side view of duplicate gear and the plan view of second gear in the duplicate gear.

Described duplicate gear has integrated two toothrows wheel, and the gear parameter (as modulus, the number of teeth etc.) that is respectively first gear 10 and second gear, 20, the first gears 10 and second gear 20 is identical.First gear 10 and second gear, 20 circumferencial direction relative positions are for staggering mutually, and the center line of each gear teeth of first gear 10 coincides with the center line of per two adjacent teeth of second gear 20 respectively.Connect by middle path 30 between first gear 10 and second gear 20, copper nut 40 is axially preset at described middle path 30 places, to limit the axial position of described duplicate gear by the Cock screw (not shown).

Described duplicate gear material of main part is a polyoxymethylene, makes and adopts the injection moulding once-through.

Compared with the prior art, adopt the advantage that the utlity model has of technique scheme to be:

1, becomes two parts and be convenient to production management into a part;

2, the molding and forming by plastic mould, element precision guarantee easily, are more convenient for producing in batches;

3, easy to assembly, use reliable.

More than explanation is just illustrative for the utility model, and nonrestrictive, and ordinary skill person understands, and under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence.As change material or with the smart casting of metal, perhaps the variation of the gear number of teeth, modulus, endoporus flatten and be kept to splined hole, all will fall within the protection domain of the present utility model.

Claims (3)

1. duplicate gear, it is characterized in that, have first gear and second gear, described first gear and second gear are one-body molded, and first gear is identical with the gear parameter of second gear, and the center line of each gear teeth of first gear coincides with the center line of per two adjacent teeth of second gear respectively.

2. duplicate gear according to claim 1 is characterized in that, connects by middle path between first gear and second gear, and described middle path axially presets copper nut.

3. duplicate gear according to claim 1 is characterized in that, described duplicate gear adopts polyformaldehyde material.

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