Dustproof wear-resistant motorcycle chain

Abstract

The dustproof wear-resistant motorcycle chain comprises a plurality of outer chain links and a plurality of inner chain links, the outer chain links and the inner chain links are sequentially and alternately connected in series, each outer chain link comprises two outer chain plates and two pin shafts, the two ends of each pin shaft are fixedly connected with the two outer chain plates respectively, and a concave part is arranged at the connecting position of the inner wall of each outer chain plate and the end of the corresponding pin shaft. The inner chain link comprises two inner chain plates, two sleeves and two rollers, the two ends of each sleeve are fixedly connected with the two inner chain plates respectively, each sleeve is sleeved with one roller, one pin shaft penetrates through the interior of each sleeve, and the two ends of each sleeve are fixedly connected with the two inner chain plates respectively. The part, protruding out of the outer wall of the inner chain plate, of each end of each sleeve is located in the corresponding concave part, and each end of each sleeve is sleeved with a sealing ring. Relative rotation of the sleeve and the pin shaft is under the protection condition of lubricating oil for a long time, relative abrasion of the sleeve and the pin shaft is reduced, and the dustproof and abrasion-resistant effects are achieved.

Description

Technical Field

[0001] The utility model relates to a chain, in particular to a dust-proof and wear-resistant motorcycle chain, belonging to the technical field of chain drives. Background Art

[0002] The motorcycle chain is one of the key components of a motorcycle, and its function is to transmit the power of the motorcycle engine to drive the wheels to rotate. During the daily use of a motorcycle, the motorcycle chain is exposed to a harsh working environment for a long time, and dust, water vapor, etc. are very likely to enter the gap between the pin and the sleeve through the gap between the link plate and the sleeve, thereby contaminating the lubricating oil between the pin and the sleeve, aggravating the wear between the pin and the sleeve, and thus reducing the transmission efficiency. The structure of the existing motorcycle chain has insufficient sealing protection between the ends of the link plate and the sleeve, and it is difficult to block external pollution, and its dust-proof and wear-resistant properties need to be improved. Summary of the Utility Model

[0003] Based on the above background, the purpose of the utility model is to provide a dust-proof and wear-resistant motorcycle chain to solve the problems described in the background art.

[0004] In order to achieve the above utility model purpose, the utility model provides the following technical solutions:

[0005] A dust-proof and wear-resistant motorcycle chain includes a plurality of outer link sections and a plurality of inner link sections alternately connected in series;

[0006] The outer link section includes two outer link plates and two pins. The two ends of each pin are respectively fixedly connected to the two outer link plates. A recessed part is provided at the connection part between the inner wall of each outer link plate and the end of the pin, and a protruding part is provided at the connection part between the outer wall of each outer link plate and the end of the pin. The thickness of the protruding part matches the thickness of the recessed part;

[0007] The inner link section includes two inner link plates, two sleeves and two rollers. The two ends of each sleeve are respectively fixedly connected to the two inner link plates. A roller is sleeved outside each sleeve, and a pin penetrates through each sleeve. The pin can rotate relative to the sleeve. Each end of each sleeve protrudes from the outer wall of the inner link plate, and the part of each end of each sleeve protruding from the outer wall of the inner link plate is located in the recessed part. A sealing ring is sleeved on each end of each sleeve.

[0008] Preferably, the thickness of the part of the outer link plate outside the protruding part and the recessed part is the same as the thickness of the part of the outer link plate between the protruding part and the recessed part.

[0009] Preferably, the contours of the protruding part and the recessed part are both circular.

[0010] Preferably, the inner wall of the sealing ring abuts against the outer wall of the end of the sleeve, and the outer wall of the sealing ring abuts against the inner wall of the recessed portion.

[0011] Preferably, one end of the sealing ring abuts against the outer wall of the inner link plate, and the other end of the sealing ring abuts against the surface of the recessed portion of the outer link plate.

[0012] Preferably, there is a gap for accommodating lubricating oil between the inner wall of the sleeve and the outer wall of the pin shaft.

[0013] Preferably, the end of the pin shaft protrudes from the outer wall of the outer link plate, and a riveting head is provided at the end of the pin shaft.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] A dust-proof and wear-resistant motorcycle chain of the present utility model, through the structure of the recessed portion, the end of the sleeve protruding from the outer wall of the inner link plate and the sealing ring sleeved on the end of the sleeve, better blocks the lubricating oil located between the sleeve and the pin shaft in this gap, and better prevents external impurities from entering the gap between the sleeve and the pin shaft, so that the relative rotation of the sleeve and the pin shaft is under the protection condition of lubricating oil for a long time, reducing the relative wear of the sleeve and the pin shaft, and playing a role in dust-proof and wear-resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0017] Figure 1 is a schematic structural diagram of a dust-proof and wear-resistant motorcycle chain of the present utility model;

[0018] Figure 2 is a schematic structural diagram of an outer link in the present utility model;

[0019] Figure 3 is a schematic structural diagram of an inner link in the present utility model;

[0020] Figure 4 is a schematic structural diagram of a recessed portion in the present utility model;

[0021] Figure 5 is a schematic structural diagram of a riveting head in the present utility model.

[0022] In the figure: 1. Outer link; 2. Inner link; 10. Outer link plate; 20. Pin shaft; 30. Inner link plate; 40. Sleeve; 50. Roller; 60. Sealing ring; 101. Concave part; 102. Convex part; 201. Riveting head part. Detailed implementation mode

[0023] The following is a further specific description of the technical solution of the present utility model through specific embodiments and in combination with the drawings. It should be understood that the implementation of the present utility model is not limited to the following embodiments, and any formal modification and / or change made to the present utility model will fall within the protection scope of the present utility model.

[0024] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are general standard parts or components known to those skilled in the art unless otherwise specified, and their structures and principles can all be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0025] The following makes a detailed description of the embodiments of the present utility model in combination with the drawings. In the following detailed description, for the convenience of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present utility model. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0026] As Figures 1 - 3 shown, the embodiment of the present utility model discloses a dust-proof and wear-resistant motorcycle chain, which includes a plurality of outer links 1 and a plurality of inner links 2 that are alternately connected in series in sequence.

[0027] The outer link 1 includes two outer link plates 10 and two pin shafts 20. The two ends of each pin shaft 20 are respectively fixedly connected to the two outer link plates 10. A concave part 101 is provided at the connection part between the inner wall of each outer link plate 10 and the end of the pin shaft 20, and a convex part 102 is provided at the connection part between the outer wall of each outer link plate 10 and the end of the pin shaft 20. The thickness of the convex part 102 matches the thickness of the concave part 101.

[0028] The inner link 2 includes two inner link plates 30, two sleeves 40 and two rollers 50. The two ends of each sleeve 40 are fixedly connected to the two inner link plates 30 respectively. A roller 50 is sleeved on the outside of each sleeve 40. A pin 20 runs through the inside of each sleeve 40. The pin 20 can rotate relative to the sleeve 40. There is a gap between the inner wall of the sleeve 40 and the outer wall of the pin 20 for accommodating lubricating oil. Each end of each sleeve 40 protrudes from the outer wall of the inner link plate 30, and the part of each end of each sleeve 40 protruding from the outer wall of the inner link plate 30 is located in the recessed portion 101. Each end of each sleeve 40 is sleeved with a sealing ring 60.

[0029] Specifically, in order to reduce the influence of the shape change of the protrusion 102 and the recess 101 on the tensile strength of the outer link plate 10, the thickness of the portion of the outer link plate 10 outside the protrusion 102 and the recess 101 is the same as the thickness of the portion of the outer link plate 10 between the protrusion 102 and the recess 101. With such a structure, when other portions of the outer link plate 10 transition to the portion between the protrusion 102 and the recess 101, the wall thickness of the outer link plate 10 is prevented from changing suddenly as much as possible, thereby reducing the influence of the protrusion 102 and the recess 101 on the tensile strength of the outer link plate 10.

[0030] Specifically, Figure 4 As shown, in order to better match the sealing ring 60 and the end of the sleeve 40, the contours of the raised portion 102 and the recessed portion 101 are both circular. The raised portion 102 and the recessed portion 101 are typically processed by stamping the chain plate with a stamping die.

[0031] Specifically, the inner wall of the sealing ring 60 abuts against the outer wall of the end of the sleeve 40, and the outer wall of the sealing ring 60 abuts against the inner wall of the recessed portion 101. One end of the sealing ring 60 abuts against the outer wall of the inner link plate 30, and the other end of the sealing ring 60 abuts against the surface of the recessed portion 101 of the outer link plate 10. The sealing ring 60 is made of an elastic material and can be elastically deformed. With the above structure, the sealing ring 60 fully closes the gap between the end of the sleeve 40 and the recessed portion 101, so that a closed chamber is formed between the inner wall of the sleeve 40 and the outer wall of the pin 20, thereby sealing the lubricating oil between the sleeve 40 and the pin 20 in the gap between the sleeve 40 and the pin 20.

[0032] Specifically, Figure 5 As shown, in order to facilitate manufacturing and improve the connection firmness, the end of the pin shaft 20 protrudes from the outer wall of the outer link plate 10, and a rivet head 201 is provided at the end of the pin shaft 20. During processing, after the pin shaft 20 is pressed into the opening of the outer link plate 10, a rivet head machine performs a rivet head operation on the end of the pin shaft 20 to form a rivet head 201.

[0033] Through the structure that the recessed part 101 and the end of the sleeve 40 protrude from the outer wall of the inner link plate 30 and the end of the sleeve 40 is sleeved with the sealing ring 60, the dust-proof and wear-resistant motorcycle chain better blocks the lubricating oil located between the sleeve 40 and the pin 20 in this gap, and better prevents external impurities from entering the gap between the sleeve 40 and the pin 20. Therefore, when the dust-proof and wear-resistant motorcycle chain is used for a long time, the relative rotation of the sleeve 40 and the pin 20 is under the protection condition of the lubricating oil for a long time, thereby reducing the relative wear of the sleeve 40 and the pin 20 and playing a role in dust-proof and wear-resistant.

[0034] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A dustproof and wear-resistant motorcycle chain, characterized in that: The dustproof and wear-resistant motorcycle chain comprises a plurality of outer chain links (1) and a plurality of inner chain links (2) which are alternately connected in series. The outer chain link (1) comprises two outer chain plates (10) and two pins (20), the two ends of each pin (20) are respectively fixedly connected to the two outer chain plates (10), a recess (101) is provided at the connection position between the inner wall of each outer chain plate (10) and the end of the pin (20), and a protrusion (102) is provided at the connection position between the outer wall of each outer chain plate (10) and the end of the pin (20), and the thickness of the protrusion (102) matches the thickness of the recess (101); The inner chain link (2) comprises two inner link plates (30), two sleeves (40) and two rollers (50). The two ends of each sleeve (40) are respectively fixedly connected to the two inner link plates (30). A roller (50) is sleeved on the outside of each sleeve (40). A pin shaft (20) passes through the inside of each sleeve (40). The pin shaft (20) can rotate relative to the sleeve (40). Each end of each sleeve (40) protrudes from the outer wall of the inner link plate (30), and the part of each end of each sleeve (40) protruding from the outer wall of the inner link plate (30) is located in the recessed portion (101). Each end of each sleeve (40) is sleeved with a sealing ring (60).

2. The dustproof and wear-resistant motorcycle chain according to claim 1, characterized in that: The thickness of the portion of the outer link plate (10) outside the raised portion (102) and the recessed portion (101) is the same as the thickness of the portion of the outer link plate (10) between the raised portion (102) and the recessed portion (101).

3. The dustproof and wear-resistant motorcycle chain according to claim 1, characterized in that: The contour of the raised portion (102) and the contour of the recessed portion (101) are both circular.

4. The dustproof and wear-resistant motorcycle chain according to claim 1, characterized in that: The inner wall of the sealing ring (60) abuts against the outer wall of the end of the sleeve (40), and the outer wall of the sealing ring (60) abuts against the inner wall of the recessed portion (101).

5. The dustproof and wear-resistant motorcycle chain according to claim 1, characterized in that: One end of the sealing ring (60) abuts against the outer wall of the inner link plate (30), and the other end of the sealing ring (60) abuts against the surface of the recessed portion (101) of the outer link plate (10).

6. The dustproof and wear-resistant motorcycle chain according to claim 1, characterized in that: A gap for containing lubricating oil is provided between the inner wall of the sleeve (40) and the outer wall of the pin shaft (20).

7. The dustproof and wear-resistant motorcycle chain according to claim 1, characterized in that: The end of the pin shaft (20) protrudes from the outer wall of the outer link plate (10), and a rivet head (201) is provided at the end of the pin shaft (20).

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