CN202682790U - Propeller for toys - Google Patents

Abstract

The utility model discloses a propeller for toys. The propeller comprises a propeller hub, blades evenly distributed around the propeller hub and an annular protective ring connected with tips of the blades. When a human body contacts with the propeller accidentally, the annular protective ring can prevent the tips from being contacted with the human body, and therefore the human body is prevented form being scratched by the tips; and simultaneously, the annular protective ring cannot hinder the flow of fluid. Practices prove that the propeller provided with the protective ring is more efficient than that provided with a protective cover. Accordingly, the high efficiency is guaranteed on the premise of protection of users by using the propeller.

Description

A kind of toy screw

Technical field

The utility model relates to the toy technique field, more particularly, relates to a kind of toy screw.

Background technology

Screw is a kind of common toy part, and factory can utilize screw to make toy car, ship or the aircraft etc. that rely on Wind power propelling.Screw can be divided into according to the quantity of blade three leaf oars, two leaf oars etc., and Fig. 1 shows a kind of structure of common three leaf oars.Screw 1 is combined by propeller hub 10 and blade 11, and propeller hub 10 generally has the streamline profile, and multi-disc blade 11 is evenly arranged around propeller hub 10, and in this figure, three blades 11 are fixedly linked with propeller hub 10.

But screw is in rotary course, and blade tip has higher linear velocity, simultaneously, because thickness of propeller blades is very little, when the rotating screw of the unexpected contact of human body, is easy to be scratched by blade tip.Those skilled in the art still, because protective cover has stopped the motion of surrounding fluid, have reduced the efficient of screw by installing semi-enclosed protective cover additional to address this problem outside screw when realizing the protection purpose.

By the above, how a kind of toy screw is provided, under the prerequisite that is implemented in protection user safety, guarantee that screw still has the purpose of higher efficient, becomes the technical problem that those skilled in the art need solution badly.

The utility model content

In view of this, the utility model provides a kind of toy screw, under the prerequisite that is implemented in protection user safety, guarantees that screw still has the purpose of higher efficient.

For achieving the above object, the utility model provides following technical scheme:

A kind of toy screw comprises propeller hub and is distributed on propeller hub blade on every side that also comprise the guard circle of annular, described guard circle connects the blade tip part of described blade.

Preferably, with in the screw, the cross section of guard circle is circular at above-mentioned toy.

The toy that the utility model provides comprises propeller hub, is distributed on the blade around the propeller hub and is connected blade blade tip annular guard circle partly with screw.When unexpected and screw came in contact when human body, the annular guard circle can avoid making blade tip and human body to come in contact, thereby prevents blade tip scuffing human body; Simultaneously, the annular guard circle can not hinder flowing of fluid, by facts have proved, compares with the screw that installs protective cover additional, and the screw that is provided with guard circle has higher efficient.

By the above, a kind of toy that the utility model provides under the prerequisite of protection user safety, has guaranteed that screw still has higher efficient with screw,

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the structural representation of screw in the prior art;

The toy that Fig. 2 provides for the utility model embodiment structural representation of screw.

The specific embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

The utility model embodiment discloses a kind of toy screw, under the prerequisite that is implemented in protection user safety, guarantees that screw still has the purpose of higher efficient.

Toy provided by the utility model comprises propeller hub 10, blade 11 and guard circle 2 with screw, and its structure as shown in Figure 2.Three blades 11 evenly arrange on propeller hub 10; Guard circle 2 is annular, and guard circle 2 partly links together the blade tip of three blades 11, makes it not have the wedge angle of evagination.

Compare with existing screw, the utility model toy that embodiment provides is provided with guard circle with screw outside blade tip, when unexpected and screw came in contact when human body, the annular guard circle can avoid blade tip and human body to come in contact, thereby prevents blade tip scuffing human body; Simultaneously, the annular guard circle can not hinder flowing of fluid, by facts have proved, compares with the screw that installs protective cover additional, and the screw that is provided with guard circle has higher efficient.

It will be appreciated by persons skilled in the art that in the utility model embodiment, for the ease of narration, chosen three-bladed propeller and narrated as an example.But the toy that the utility model embodiment provides can also be two vane propellers, four-blade propeller, five vane propellers etc. with screw, i.e. the condition that how much should not become restriction the utility model scope of the screw number of sheets.

Concrete, with in the screw, the cross section of described guard circle can be rectangle, ellipse or circular etc. at toy that above-described embodiment provides.Preferably, the cross section of guard circle is circular.

Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (2)

1. a toy screw comprises propeller hub (10) and is distributed on propeller hub (10) blade (11) on every side, and it is characterized in that, also comprise the guard circle (2) of annular, described guard circle (2) connects the blade tip part of described blade (11).

2. toy screw according to claim 1 is characterized in that, the cross section of described guard circle (2) is circular.

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