CN202508257U

CN202508257U - Low-noise thick-teeth equal-height chip removal chain wheel

Info

Publication number: CN202508257U
Application number: CN2012200778688U
Authority: CN
Inventors: 李再勇; 李仁发
Original assignee: CHONGQING WANLIJIANGFA SPROCKET Co Ltd
Current assignee: CHONGQING WANLIJIANGFA SPROCKET Co Ltd
Priority date: 2012-03-05
Filing date: 2012-03-05
Publication date: 2012-10-31
Anticipated expiration: 2022-03-05

Abstract

The utility model discloses a low-noise thick-teeth equal-height chip removal chain wheel, which comprises a chain wheel body and a piece of noise-adsorption damping rubber, wherein the chain wheel is formed by a plurality of equal-height thick teeth uniformly distributed in the circumference direction; two end faces of the chain wheel body are planes; the noise-adsorption damping rubber is formed by integral injection molding of two rubber rings and a rubber connecting block arranged in an axial through hole; the width L of each rubber ring is larger than the diameter phi of the axial through hole; chip removal grooves are formed in the joints of the end face of the chain wheel body and the bottoms of the wheel teeth; the width b of each chip removal groove is larger than or equal to 5 mm and smaller than or equal to 8 mm; the length c of the chip removal groove is larger than or equal to 4 mm and smaller than or equal to 7 mm; the maximal depth d of the the chip removal groove is larger than equal to 1 mm and smaller than or equal to 3 mm; the depth of the chip removal groove is reduced inwards in the radial direction of the chain wheel body until being coincident with the end faces of the chain wheel body. The low-noise thick-teeth equal-height chip removal chain wheel has the characteristics of simple structure, low cost, long service life, abrasion resistance, low noise, high transmission efficiency and the like. The chain wheel is fit for a transmission mechanism of a motorbike, and can be widely popularized in the fields such as textile machinery and instrument machinery.

Description

High chip removal sprocket wheels such as the thick tooth of low noise

Technical field

The utility model relates to motorcycle technology and mechanical transmissioning technology field, is specifically related to high chip removal chain sprocket structures such as the thick tooth of a kind of low noise.

Background technology

Chain wheel of motorcycle is the embodiment of transmission of motor cycle engine power and motorcycles drives, and desired strength is good, wear-resisting, driving efficiency is high and the transmission distortion is low.At present, the main failure forms of chain wheel of motorcycle is wearing and tearing, and the transmission noise is big, driving efficiency is low.Therefore, how prolonging service life, the noise in the reduction chain sprocket drive process of sprocket wheel and improve driving efficiency, will be to reach an emphasis problem of a period of time sprocket wheel development from now at present.

Find through analyzing; Present most chain wheel of motorcycle is in the abominable running environment of more complicated, and a lot of dusts and the granule foreign be infected with on the sprocket wheel can't be discharged smoothly, has increased the friction of sprocket wheel with the engagement chain; Cause the sprocket wheel wearing and tearing to increase, transmission efficiency and service life reduce.

In addition; Noise and driving efficiency in the chain wheel of motorcycle transmittance process are on the low side, still do not have terms of settlement preferably, have made it to obtain certain improvement through the mode of slowing down transfer rate, raising working accuracy at present; Still have problems such as cost is high, Applicable scope is little, effect is very unobvious yet.

The utility model content

To existing in prior technology the problems referred to above, the sprocket wheel that the utility model aims to provide that a kind of wear-resistant, long service life, cost are low, noise is less and driving efficiency is high in the transmission process.

For reaching above-mentioned purpose; High chip removal sprocket wheels such as the thick tooth of a kind of low noise that the utility model provides are made up of sprocket body and the suction yielding rubber of making an uproar, and key is: said sprocket body is made up of the some gear teeth that are circumference uniform distribution; The height of the tooth top of each gear teeth at the bottom of the tooth equates; The thickness of the gear teeth is a, 2mm≤a≤3mm, and the both ends of the surface of sprocket body are the plane; Said annular rubber is symmetricly set on the both ends of the surface of sprocket body; Said sprocket body is provided with two axially extending bores at least in the corresponding position of annular rubber, and the width L of annular rubber is greater than the diameter phi of axially extending bore, said suction make an uproar yielding rubber by two annular rubbers be arranged on the rubber contiguous block integrated injection molding in the axially extending bore; The position of the end face of said sprocket body and gear teeth bottom connection is provided with junk slot, and the width of said junk slot is b, 5mm≤b≤8mm; Length is c; 4mm≤c≤7mm, extreme depth is d, 1mm≤d≤3mm; The degree of depth of this junk slot radially inwardly reduces along sprocket body gradually, until overlapping with the end face of sprocket body.

The axially extending bore that is arranged on the said sprocket body is 3-10, and is circumference uniform distribution, make the annular rubber that is connected as a single entity through axially extending bore stressed evenly, inhale the better effects if of making an uproar; The make an uproar two ends inwall of yielding rubber of suction is provided with chamfering, has alleviated weight, has reduced cost.

As preferably, said junk slot is provided with at the gear teeth bottom interval of sprocket body.

Both ends of the surface through in sprocket body increase annular rubber, absorb noise and vibrational energy in the sprocket wheel operational process, reach the purpose that reduces noise; Simultaneously, on sprocket body, increase junk slot, can in time the foreign matter in the chain sprocket drive process be discharged, reduce the friction in sprocket wheel and the chain engages, prolong the service life of sprocket wheel chain; Sprocket body is made up of the some gear teeth that are circumference uniform distribution, and the height of the tooth top of each gear teeth at the bottom of the tooth equates, and the thickness of the gear teeth is bigger, constitutes high sprocket wheels such as thick tooth, compares traditional chain sprocket structure, and its engagement property is better, gearing factor obviously improves; The width L of annular rubber need not be provided for fixing circumferential groove of inhaling the yielding rubber of making an uproar greater than the diameter phi of axially extending bore on the both ends of the surface of sprocket body, the both ends of the surface of sprocket body are the plane, have reduced processing capacity, have reduced manufacturing cost; Width b, length c, the extreme depth d of junk slot are limited in the reasonable range, can reduce the difficulty of processing of junk slot on the one hand, also improved the chip removal effect on the other hand, guarantee the timely discharge of foreign matter.

The utlity model has simple in structure, cost is low, chip removal is effective, noise is low, characteristics such as applied widely; The service life of sprocket wheel and the noise in the transmission process have greatly been improved; Be specially adapted to the motor bike transmission device, also can extensively promote in fields such as textile machine, instrument machineries.

Description of drawings

Fig. 1 is the structural representation of the utility model.

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

Fig. 3 is the partial enlarged drawing of the gear teeth and junk slot among Fig. 1.

Fig. 4 is the B-B cutaway view of Fig. 3.

Fig. 5 is the block diagram of the gear teeth and junk slot among Fig. 1.

Fig. 6 is the another kind of structural representation of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Like high chip removal sprocket wheels such as Fig. 1, the thick teeth of the described low noise of Fig. 2, constitute by sprocket body 1 and the suction yielding rubber 2 of making an uproar.Sprocket body 1 is made up of the some gear teeth that are circumference uniform distribution, and the height of the tooth top of each gear teeth at the bottom of the tooth equates.In conjunction with Fig. 3, the thickness of the gear teeth is a, and 2mm≤a≤3mm is preferably 2mm, constitutes high sprocket wheels such as thick tooth.

Can know that in conjunction with Fig. 1-5 both ends of the surface of sprocket body 1 are the plane, sprocket body 1 is provided with eight axially extending bore 1a that are circumference uniform distribution in the corresponding position of annular rubber 2a.Annular rubber 2a is symmetricly set on the both ends of the surface of sprocket body 1, and the width L of annular rubber 2a makes annular rubber 2a in transmission process, can not break away from the end face of sprocket body 1 greater than the diameter phi of axially extending bore.Suction make an uproar yielding rubber 2 by two annular rubber 2a be arranged on the rubber contiguous block 2b integrated injection molding in the axially extending bore 1a.The position of the end face of sprocket body 1 and gear teeth bottom connection is provided with junk slot 3, and the width of junk slot 3 is b, and 5mm≤b≤8mm is preferably 6mm; The length of junk slot 3 is c, and 4mm≤c≤7mm is preferably 5mm; The extreme depth of junk slot 3 is d, and 1mm≤d≤3mm is preferably 2mm; The degree of depth of this junk slot 3 radially inwardly reduces along sprocket body 1 gradually, overlaps until the end face with sprocket body 1.

The axially extending bore 1a that is arranged on the sprocket body 1 is at least two, is preferably 3-10, and is circumference uniform distribution.As shown in Figure 2, the two ends inwall of inhaling the yielding rubber 2 of making an uproar is provided with chamfering C.

During work, transmission device drives sprocket body 1 rotation, and sprocket body 1 drives and its ingear chain gear outputting power.Sprocket body 1 sport produces noise and vibration; The suction yielding rubber 2 of making an uproar is processed for rubber-like rubber, and noise and vibrational energy that this suction is made an uproar and produced when yielding rubber 2 can absorb the sprocket wheel operation reduce noise; And reduce the wearing and tearing of sprocket wheel, prolong the service life of sprocket wheel.

High chip removal sprocket wheels such as the thick tooth of low noise as shown in Figure 6, its junk slot 3 is provided with at the gear teeth bottom interval of sprocket body 1.

The above is merely the preferred embodiment of utility model; Not with this restriction as utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims

1. high chip removal sprocket wheels such as the thick tooth of low noise; Constitute by sprocket body (1) and the suction yielding rubber (2) of making an uproar; It is characterized in that: said sprocket body (1) is made up of the some gear teeth that are circumference uniform distribution, and the height of the tooth top of each gear teeth at the bottom of the tooth equates that the thickness of the gear teeth is a; 2mm≤a≤3mm; The both ends of the surface of sprocket body (1) are the plane, and said annular rubber (2a) is symmetricly set on the both ends of the surface of sprocket body (1), and said sprocket body (1) is provided with two axially extending bores (1a) at least in the corresponding position of annular rubber (2a); The width L of annular rubber (2a) is greater than the diameter phi of axially extending bore, and said suction is made an uproar yielding rubber (2) by two annular rubbers (2a) and rubber contiguous block (2b) integrated injection molding that is arranged in the axially extending bore (1a); The end face of said sprocket body (1) and the position of gear teeth bottom connection are provided with junk slot (3), and the width of said junk slot (3) is b, 5mm≤b≤8mm; Length is c; 4mm≤c≤7mm, extreme depth is d, 1mm≤d≤3mm; The degree of depth of this junk slot (3) radially inwardly reduces along sprocket body (1) gradually, overlaps until the end face with sprocket body (1).

2. according to high chip removal sprocket wheels such as the thick teeth of the described low noise of claim 1; It is characterized in that: the axially extending bore (1a) that is arranged on the said sprocket body (1) is 3-10; And be circumference uniform distribution, the make an uproar two ends inwall of yielding rubber (2) of said suction is provided with chamfering C.

3. according to high chip removal sprocket wheels such as claim 1 or the thick teeth of 2 described low noises, it is characterized in that: said junk slot (3) is provided with at the gear teeth bottom interval of sprocket body (1).