CN206159369U - Novel dustproof roller chain - Google Patents

Abstract

The utility model discloses a novel dustproof roller chain, including the round pin axle, the inner skleeve, the outer sleeve, inner plate and outer plate, the both ends of inner plate are equipped with the inner plate through -hole respectively, the both ends of outer plate are equipped with the outer plate through -hole respectively, the outer plate through -hole includes the centre bore and the counter bore of central line coincidence and intercommunication, the counter bore is located on the outer plate and is lain in the inboard of centre bore, the diameter of counter bore is greater than the diameter of centre bore and omits the external diameter that is greater than the inner skleeve, the length that the outside and the nose of two inner plates are stretched out respectively to the both ends of inner skleeve slightly is less than the height of counter bore, the diameter of centre bore is less than the external diameter of inner skleeve and slightly is greater than the round pin outside diameter of shaft, the both ends of inner skleeve are arranged in respectively in the counter bore of two outer plates. The utility model discloses a with the outer plate through -hole on outer plate design for the structure of centre bore + counter bore, make outside dust and silt basic by the shutoff outside the chain, can not get into sell spool and the inner skleeve between and between inner skleeve and the outer sleeve to the wear resistance and the life of chain have been prolonged.

Description

Dustproof roller chain

Technical field

The utility model is related to a kind of roller chain, more particularly to a kind of dust that is prevented from is from the sky between outer plate and interior The Dustproof roller chain that gap is entered between bearing pin and sleeve.

Background technology

Roller chain is a kind of chain for transmitting mechanical power, is chaindriven one kind, is widely used in family, industry And agricultural machinery, including conveyer, draught machine, printing machine, automobile, motorcycle and bicycle etc., it is by a series of short Cylindrical roller is linked together, and is driven by a gear for being referred to as sprocket wheel, is a kind of simple, reliable, efficient power transmission dress Put.

Roller chain specifically includes bearing pin, inner sleeve, outer sleeve, interior and outer plate, and joint also includes nipple pin and jump ring, Interior is respectively arranged at two ends with interior through hole, interior through hole with diameter greater than inner sleeve external diameter and less than outer sleeve external diameter, outer plate Be respectively arranged at two ends with outer plate through hole, the external diameter with diameter greater than bearing pin of outer plate through hole, outer sleeve is set in outside inner sleeve, bearing pin Through the through hole and interior piece through hole also cross two interior pieces and the outer plate through hole of two outer plates of inner sleeve, two interior pieces difference The two ends outside of outer sleeve is placed in, two outer plates are respectively placed in the outside of two interior pieces and are set in the two ends of inner sleeve, bearing pin Two ends by enlarging or alternate manner make its external diameter more than two outer plate through-hole diameters and realize bearing pin, inner sleeve, outer sleeve, Interior being rotatably connected and outer plate between.

The outer plate through-hole diameter of the outer plate of conventional roller chain is less than the external diameter of inner sleeve and more than the external diameter of bearing pin, inner sleeve Two ends not higher than in piece outer surface, cause outer plate, interior there is rectilinear slot and bearing pin between, and this rectilinear clearance is straight The gap connect between bearing pin and inner sleeve communicates, thus dust and silt can be caused to be easily accessible between bearing pin and inner sleeve Gap, so as to accelerate the abrasion of inner sleeve drum outer wall and outer sleeve inwall, accelerates the abrasion of whole chain, reduces chain Anti-wear performance and service life.In addition, abrasion of the conventional roller chain due to inner sleeve and outer sleeve, and interior piece and outer plate all compare Relatively thin the reason for, in use pitch easily extend, also result in whole chain elongation, reducing chain performance simultaneously causes resistance to The reduction of mill performance and used life.

Especially in the application scenario that dust and silt are more, such as Rings Roller Chains, its relatively low anti-wear performance and make With clearly, the service life of Rings Roller Chains is significantly reduced the drawbacks of the life-span, motorcycle use cost is increased, more Chain rupture seriously on the way occurs may be caused traffic accident and have a strong impact on user's stroke.

Utility model content

The purpose of this utility model be that provide to solve the above problems one kind be prevented from dust from outer plate with The Dustproof roller chain that space between interior is entered between bearing pin and sleeve.

The utility model is achieved through the following technical solutions above-mentioned purpose：

A kind of Dustproof roller chain, including bearing pin, inner sleeve, outer sleeve, interior and outer plate, the two ends point of described interior It is not provided with interior through hole, the outer plate is respectively arranged at two ends with outer plate through hole, and the outer sleeve is set in outside the inner sleeve, institute State bearing pin through the inner sleeve through hole and the interior piece through hole also cross two described interior and two outer plates it is outer Piece through hole, the two described interior two ends outside for being respectively placed in outer sleeve, two outer plates are respectively placed in the outer of two interior pieces Side is simultaneously set in the two ends of the inner sleeve；The outer plate through hole includes the centre bore and counterbore of center line coincidence and intercommunication, institute Counterbore is stated on the outer plate and the inner side of the centre bore, the diameter with diameter greater than the centre bore of the counterbore is located at And slightly larger than the external diameter of the inner sleeve, two outsides of interior and extension are stretched out respectively in the two ends of the inner sleeve Length be slightly less than the height of the counterbore, the diameter of the centre bore less than the inner sleeve external diameter and slightly larger than the pin The external diameter of axle, the two ends of the inner sleeve are respectively placed in the counterbore of two outer plates.

Specifically, the thickness of the outer plate is 2-3mm, and the height of the counterbore on the outer plate is 0.5-1mm.

The beneficial effects of the utility model are：

The utility model is by by the structure of hole+counterbore centered on the outer plate via design on outer plate, making the two of inner sleeve End is just placed in the counterbore of outer plate, and outer plate, the interior gap and inner sleeve between become Z-shaped, especially in stage casing, due to interior Butter is contacted for arc surface and is typically filled between sleeve and counterbore hole wall, so its gap is minimum, so, external dust and Silt outside chain, will not be entered between bearing pin and inner sleeve and inner sleeve and outer sleeve between, so as to extend substantially by closure The anti-wear performance and service life of chain, reduces the abrasion of inner sleeve and outer sleeve, simultaneously because the thickness of outer plate increases, In use chain pitch will not extend substantially, and whole chain length is consistent, and improve its stability, improve chain Bar anti-wear performance and service life.Dustproof roller chain described in the utility model be particularly suited for dust and silt it is more should With occasion such as Rings Roller Chains.

Description of the drawings

Fig. 1 is the upward view of outer plate described in the utility model；

Fig. 2 is the A-A sectional views in Fig. 1, is main view visual angle relative to Fig. 1；

Fig. 3 is the upward view of interior described in the utility model；

Fig. 4 is the B-B sectional views in Fig. 1, is main view visual angle relative to Fig. 1；

Fig. 5 is that front view cuts open in the office of wherein a section of Dustproof roller chain described in the utility model, and end is shown in figure Head attachment structure；

Fig. 6 is the top view of wherein a section of Dustproof roller chain described in the utility model, shows that termination connects in figure Binding structure.

Specific embodiment

Below in conjunction with the accompanying drawings the utility model is described in further detail：

As shown in figs 1 to 6, Dustproof roller chain described in the utility model include bearing pin 3, inner sleeve 4, outer sleeve 5, Interior 2 and outer plate 1, interior 2 is respectively arranged at two ends with interior through hole 21, and outer plate 1 is respectively arranged at two ends with outer plate through hole, described outer Piece through hole includes the centre bore 11 and counterbore 12 of center line coincidence and intercommunication, and counterbore 12 is on outer plate 1 and positioned at centre bore 11 Inner side, counterbore 12 with diameter greater than centre bore 11 diameter and slightly larger than the external diameter of inner sleeve 4, outer sleeve 5 is set in inner sleeve Outside cylinder 4, bearing pin 3 through inner sleeve 4 through hole 41 and the interior piece through hole 21 also cross two interior pieces 2 and two outer plates 1 it is outer Piece through hole, two interior pieces 2 are respectively placed in the two ends outside of outer sleeve 5, and two outer plates 1 are respectively placed in the outside of two interior pieces 2 simultaneously It is set in the two ends of inner sleeve 4, the outside of two interior pieces 2 is stretched out at the two ends of inner sleeve 4 respectively and the length of extension is smaller In the height of counterbore 12, the diameter of centre bore 11 less than inner sleeve 4 external diameter and slightly larger than the external diameter of bearing pin 3, the two of inner sleeve 4 End is respectively placed in the counterbore 12 of two outer plates 1；The thickness of outer plate 1 is 2-3mm, and the height of the counterbore 12 on outer plate 1 is 0.5- 1mm。

As shown in figure 5, the two ends of inner sleeve 4 are just placed in the counterbore 12 of outer plate 1, outer plate 1, interior 2 and inner sleeve 4 it Between gap become Z-shaped, especially in stage casing, due to contacting for arc surface between the outer wall and the hole wall of counterbore 12 of inner sleeve 4 And be typically filled with butter, so its gap is minimum, so, external dust and silt substantially by closure outside chain, Bu Huijin Enter between bearing pin 3 and inner sleeve 4 and inner sleeve 4 and outer sleeve 5 between.

The end connecting structure of chain is also show in Fig. 5 and Fig. 6, this is for the ease of being realized the dress of chain by this Unload, with the purpose for reaching increase or reducing chain length；The end connecting structure includes joint outer plate 8, jump ring 7 and nipple pin 6, Length and its two ends termination external diameter increase of the length of nipple pin 6 more than above-mentioned bearing pin 3, enables jump ring 7 by the two of nipple pin 6 End termination is blocked, and so as to realize the connection of joint, the structure of joint outer plate 8 is similar or identical with the structure of above-mentioned outer plate 1, main See whether the external diameter of nipple pin 6 is identical with the external diameter of above-mentioned bearing pin 3, if identical, the structure of joint outer plate 8 is outer with above-mentioned The structure of piece 1 is identical, and the outer plate through-hole diameter of otherwise joint outer plate 8 can increase or reduce；The interior piece of end connecting structure, inner sleeve The structure of cylinder and outer sleeve is identical with the structure of the interior piece 2, inner sleeve 4 and outer sleeve 5 of above-mentioned non-joint.

Above-described embodiment is preferred embodiment of the present utility model, is not the limit to technical solutions of the utility model System, as long as the technical scheme that can be realized on the basis of above-described embodiment without creative work, is regarded as falling into In the rights protection scope of the utility model patent.

Claims (2)

1. a kind of Dustproof roller chain, including bearing pin, inner sleeve, outer sleeve, interior and outer plate, the two ends difference of described interior It is provided with interior through hole, the outer plate is respectively arranged at two ends with outer plate through hole, and the outer sleeve is set in outside the inner sleeve, described Bearing pin passes through the through hole of the inner sleeve and the outer plate of the interior piece through hole also cross two described interior and two outer plates Through hole, the two described interior two ends outside for being respectively placed in outer sleeve, two outer plates are respectively placed in the outside of two interior pieces And it is set in the two ends of the inner sleeve；It is characterized in that：The outer plate through hole includes the centre bore of center line coincidence and intercommunication And counterbore, the counterbore on the outer plate and positioned at the inner side of the centre bore, the counterbore with diameter greater than in described The diameter in heart hole and slightly larger than the external diameter of the inner sleeve, two outsides of interior are stretched out respectively at the two ends of the inner sleeve And the length of extension is slightly less than the height of the counterbore, the diameter of the centre bore is less than external diameter and the summary of the inner sleeve More than the external diameter of the bearing pin, the two ends of the inner sleeve are respectively placed in the counterbore of two outer plates.

2. Dustproof roller chain according to claim 1, it is characterised in that：The thickness of the outer plate is 2-3mm, described The height of the counterbore on outer plate is 0.5-1mm.