CN2334673Y

CN2334673Y - Ship outside motor propeller

Info

Publication number: CN2334673Y
Application number: CN 98206325
Authority: CN
Inventors: 林允进
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-24
Filing date: 1998-06-24
Publication date: 1999-08-25
Anticipated expiration: 2008-06-24

Abstract

The utility model relates to a ship outside motor propeller, which comprises an axle housing made of metal material and a plurality of screw blades made of plastic material, wherein the periphery of the axle housing is provided with a plurality of recesses which are arranged circularly at intervals of equidistance and are extended axially along the axle housing; the centre of the axle housing is provided with an axle hole used for threading and connecting a motor-driven axle; a plurality of hollow chambers are formed between the periphery of the axle hole and each recess for exhausting waste gas; the bottom section of each screw blade is provided with a clamping position used for being embedded into each recess along the axle housing axially and breadthwise. Accordingly, the metal axle housing is combined with the plastic screw blade to form a propeller with composite material.

Description

The outboard engine screw propeller

The utility model is relevant with the outboard engine screw propeller, is meant a kind of composite outboard engine screw propeller of being made up of metal axle housing and plastic cement helicallobe especially.

Known to Prior Art, traditional outboard engine screw propeller is to be shaped by metal forging, and axle housing that it is made and blade are that one is inseparable.Only the outboard engine screw propeller made from this kind skill but has its disadvantageous one side in development, reason is that if it uses central the unfortunate reef that collides, or be external floating article bump, and even the enormous impact strength that this moment, its screw propeller bore certainly will be passed on the metal axle housing motor drive shaft fast by metal blade, under no suitable buffering, cause blade or axle housing to break easily or the bent propeller shat distortion, and be necessary for an integral replacing.

On the other hand, follow outstanding plastic cement industry to grow up fast in recent years, existing more and more many products change with plastic cement material to be made, wherein the preceding case of relevant outboard engine screw propeller for instance, the typical case who is wherein as No. 4930987 patent case of the U.S. represents, this case screw propeller mainly discloses a kind of hub and blade is to be combined into one and all to be made into integration by plastic cement material in disassembled mode, the application of this kind of mat plastic cement material and the change of structure and must overcome that conventional metals forges that screw propeller produced in using before take off drawback.

Only, No. 4930987 patent case of the in-depth study U.S., find that but it still has many places not attain and improves part, one is the binding site complex structure of this axle housing and these blade abaculus, particularly its blade is and the chamber one plastic rubber shaping of discharging for waste gas, thereby die needed accuracy requirement height, die cost will improve relatively, in addition, for in response to the used different length axle housing of different size boats and ships on the market, so must make of the axle housing elasticity production of the mould of how secondary different size for different length, so, production and inventory cost will promote relatively; Its two, this each helicallobe is chimeric with the no small block abaculus of a volume and this axle housing, only so will demonstrate a little less than the structural strength relative thin of this axle housing, therefore when impacted by big external force or floating debris, this axle housing can't bear enormous impact power; They are three years old, the axle housing of this case and blade are owing to all make with plastic cement material, therefore in long period of soaking in the environment of seawater, this plastic cement axle housing is subjected to the marine denudation quick aging easily, very and, the high temperature hot gas that motor is discharged in the middle of using also can be quickened the aging of plastic cement axle housing and the service life of the whole group of reduction screw propeller; They are four years old, this axle housing and blade are made owing to all belonging to plastic cement material, therefore when colliding obstacle or floating debris, and even will be passed to fast in the axle housing motor drive shaft easily by the jarring forces that blade bore, therefore slow down the poor effect of seismic wave speed, all this kind is all it and still need improves part.

Main purpose of the present utility model is to be to provide a kind of outboard engine screw propeller, and it is to make axle housing and helicallobe with the combined type material, gets effectively to reduce production costs by this.

A time purpose of the present utility model then is to provide a kind of outboard engine screw propeller, and its axle housing has the good helicallobe design of resiliency of arranging in pairs or groups again of strong design intensity, and effectively promotes screw propeller single-piece structure toughness.

Another purpose of the present utility model is to be to provide a kind of outboard engine screw propeller, and it in the time of must making screw propeller be subjected to foreign object impact, can form buffering in axle housing, and reduce the damage rate of screw propeller by the axle housing and the blade combination of unlike material with between blade.

A purpose more of the present utility model more is to provide a kind of outboard engine screw propeller, and its metal axle housing has good resistance to aging, and gets the person in service life who effectively promotes screw propeller.

Edge is taken off purpose with on reaching, and according to a kind of outboard engine screw propeller provided by the utility model, it includes:

One axle housing, be to make with metal material, its outer peripheral edges are provided with several depressions, these depressions are that the equidistant ring of being separated by is established and prolonged axle housing and extends axially and form, these axle housing central authorities form an axis hole, use for motor drive shaft to link, then form number hollow chamber between this axis hole periphery and this each depression, use for waste gas and circulate;

A plurality of helicallobes are to make with plastic cement material, and section is to form a blocking position at the bottom of this each helicallobe, in order to along axial horizontal the inserting in this each depression of axle housing; Wherein this axle housing is one-body molded with Al squeezing material; Wherein this each depression is from outer to inner to form the room that enlarges gradually; Then make and the corresponding imitative awl piece together of this each depression room shape size at the blocking position of this each helicallobe; Wherein this axle housing generally is cylindric, and its central axis hole ring week separates into several chambers to count rib, is obstruct with a parting bead then between this each chamber and each depression, and it is thick to form number handing-over meat by this, joins respectively in this that meat is thick to be gone up and the person that has been horizontally set with the screw; Wherein more including one first end cap, is to be arranged at this axle housing front end, and this first end cap has an axial center hole, uses for motor drive shaft to place; The number perforation then around being located at this centre hole periphery, being used for waste gas and is discharged; The number through holes then are located at connecing on the face between two perforation, are to wear and this first end cap is fixed in this axle housing front end for the number screw; Wherein more being included in one second end cap, is to be arranged at this axle housing rear end, and this second axle cap has a centre hole, uses for motor drive shaft to pass; The number perforation then around being located at this centre hole periphery, being used for waste gas and is discharged; The number through holes then are located at connecing on the face between two perforation, are to wear and this second end cap is fixed in this axle housing rear end for the number screw.

By above-mentioned, utilize these plastic cement helicallobes to form the screw propeller of a tool composite with combining of metal axle housing.

After below enumerating a preferred embodiment and conjunction with figs. and being illustrated in,, your juror further understands and approval so that being had for the purpose of this utility model, feature and effect, wherein:

Fig. 1 is the decomposing schematic representation of the utility model one preferred embodiment.

Fig. 2 is the assembly drawing of the utility model Fig. 1.

Fig. 3 is the cutaway view of 3-3 portion line among Fig. 2.

See also Fig. 1 to shown in Figure 3, the utility model outboard engine screw propeller, it includes primary members such as one first end cap 10, an axle housing 20, four helicallobes 30 and one second end cap 40, wherein:

This first end cap 10 includes a centre hole 11 and four perforation 12 and four-way holes 13, and this centre hole 11 is to place for

axle drive shaft

15, and 12 of this four perforation import in the hub 20 discharging the outside for waste gas, and 13 in this four-way hole such as supplies to place at the screw 60 of number.

This axle housing 20, be to make with Al squeezing material, include a centre hole 21, four depressions 22 and four chambers 23, these axle housing 20 front and back ends are to be formed with

shoulder

27,28 just can be resisted against this first, two

end caps

10,40

protrusion wall

14,24, these centre hole 21 inner peripherals are formed with ring tooth portion 211, use for the tooth bar 151 of axle drive shaft 15 meshing, this four depression 22, then equidistantly to be located on this axle housing 20 outer peripheral edges, these each depression 22 two side faces are to form the conical surface 221 that tilts to enlarge gradually from outside to inside, 23 of this four chambers are around being arranged at 21 of this each depression 22 and centre holes, use for waste gas and circulate, the parting bead 222 that each depression 22 of mat 23 constructed ribs 231 of this each chamber and this and this each chamber 23 are built up and to form the meat of handing-over everywhere on the skeleton of axle housing 20 thick 25 is before this axle housing 20, laterally be provided with a screw 251 respectively on the four handing-over meat thick 25 of rear end side.

This four helicallobe 30, be with the plastic cement material ejection formation, these each helicallobe 30 bottoms are formed with a blocking position 31, this blocking position 31 is to have up-narrow and down-wide Cross section Design, just can coincide with the shape of this each depression 22 size, this each blade 30 is to prolong these axle housing 20 major axis to be combined into one with this axle housing 20 to plugging together in this each depression 22 during assembling.

This second end cap 40 then includes a centre hole 41 and four perforation 42 and four-way holes 43, and this centre hole 41 is to pass for

axle drive shaft

15, and 42 of this four perforation are discharged outside for waste gas, and 43 in this four-way hole such as supplies to place at the screw 60 of number.

By above-mentioned, during the utility model combination, this first end cap 10 is that mat four screws 60 are screwed together in this axle housing 20 anterior end surface, multiple blocking position 31 with four helicallobes 30 laterally is inserted in four depressions 22 of this axle housing 20 one by one, then again this second end cap 40 is screwed together in this axle housing 20 outside end faces with other four screws 60, so can finish the preposition assembling operation of axle housing 20 and blade 30, again it is combined with motor drive shaft 15 at last, and utilize a nut 50 to screw togather these axle drive shaft 15 outer ends and can close set synthesize the outboard engine screw propeller.

By the above-mentioned composite screw propeller of forming, the axle housing of promptly being made by Al squeezing material 20 and the unitized construction of the integrated helicallobe 30 of plastic cement will make the utility model outboard engine screw propeller have the following advantages producing and use:

1. plastic cement helicallobe of the present utility model gets by the flexible speciality of its material and effectively to slow down the impact power when colliding foreign object, avoids huge impact power injure axle housing or axle drive shaft; In addition, in case when helicallobe be can't help damage, more can only need to change an impaired blade and get final product, need not change the whole group of unit that comprises axle housing.

The axle housing made of the utility model Al squeezing material 20 its to count rib 231 sturdy with number parting bead 222 formed skeleton structures, effectively promote the structural strength of screw propeller; And Al squeezing material easy and precision control on making the most important thing is that it more can cut required axle housing length in response to elasticity of demand easily, uses with the boats and ships that are suitable for different size, thus on the processing procedure and on the stock effective control and management, and effective cost-cutting.

3. the axle housing made of the utility model Al squeezing material, it has preferable resistance marine corrosion ability and resists the ability that the engine temperature corrodes, therefore effectively prolong service life of screw propeller.

4. the utility model is formed by the composite of aluminum alloy axle housing and plastic cement blade, must form buffering with between axle housing in blade, gets and effectively slows down the probability that external impact power is impacted axle drive shaft fast.

Aforesaid embodiment, spy have all progressive effect that reduces outboard engine screw propeller productive costs and promote service life, really are the utility model creation of tool progressive, and for ensureing applicant's rights and interests, the whence proposes patent application in accordance with the law.

Claims

1. outboard engine screw propeller is characterized in that it includes:

One axle housing, be to make with metal material, its outer peripheral edges are provided with several depressions, these depressions are that the equidistant ring of being separated by is established and prolonged axle housing and extends axially and form, these axle housing central authorities form an axis hole, use for motor drive shaft to link, then form some hollow chamber of being separated by and coming between this axis hole periphery and this each depression, use for the waste gas water conservancy diversion;

A plurality of helicallobes are to make with plastic cement material, and section is to form a blocking position at the bottom of this each helicallobe, in order to axially to be intercalated in this each depression along axle housing.

2. according to the described outboard engine screw propeller of claim 1, it is characterized in that wherein this axle housing is one-body molded with Al squeezing material.

3. according to the described outboard engine screw propeller of claim 1, it is characterized in that wherein this each depression is from outer to inner to form the room that enlarges gradually; Then make and the corresponding imitative awl piece together of this each depression room shape size at the blocking position of this each helicallobe.

4. according to the described outboard engine screw propeller of claim 1, it is characterized in that, wherein this axle housing generally is cylindric, its central axis hole ring week separates into several chambers to count rib, be obstruct then between this each chamber and each depression with a parting bead, it is thick to form number handing-over meat by this, joins respectively in this that meat is thick to be gone up and the person that has been horizontally set with the screw.

5. according to the described outboard engine screw propeller of claim 1, it is characterized in that, wherein more include one first end cap, is to be arranged at this axle housing front end, and this first end cap has an axial center hole, uses for motor drive shaft to place; The number perforation then around being located at this centre hole periphery, being used for waste gas and is discharged; The number through holes then are located at connecing on the face between two perforation, are to wear and this first end cap is fixed in this axle housing front end for the number screw.

6. according to the described outboard engine screw propeller of claim 1, it is characterized in that, wherein more be included in one second end cap, is to be arranged at this axle housing rear end, and this second axle cap has a centre hole, uses for motor drive shaft to pass; The number perforation then around being located at this centre hole periphery, being used for waste gas and is discharged; The number through holes then are located at connecing on the face between two perforation, are to wear and this second end cap is fixed in this axle housing rear end for the number screw.