Motorcycle chain with shock-resistant folded edges

Abstract

A motorcycle chain with folded edges resistant to impact comprises outer chain plates and inner chain plates, the outer chain plates are installed on the outer sides of the inner chain plates and used for connecting the inner chain plates adjacent in the radial direction, the two opposite outer chain plates and pin shafts are assembled to form outer chain links, and the inner chain plates and the pin shafts are assembled to form independent inner chain links. The periphery of the outer surface of each outer chain plate is provided with an edge folding structure. By means of the outer chain plate edgefold reinforcement, the contact area of the pin shaft and the outer sheet is increased, the pressure intensity of the contact surface is reduced, and the impact resistance can be effectively improved. And meanwhile, the bending resistance of the outer chain plate is enhanced, and bending failure in advance is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of chains, and particularly relates to a flanged impact-resistant motorcycle chain. Background Art

[0002] Common chains used in motorcycle equipment are formed by connecting multiple link units in series. Each unit includes two inner link plates, two outer link plates disposed outside the link plates, and a rotatable chain roller clamped between the two inner link plates. A pin is sequentially passed through the outer link plate, the inner link plate, the inner link plate on the other side, and the outer link plate on the other side, and the two ends of the pin are riveted to the two outer link plates respectively by a riveting machine, thereby realizing the pivotal connection between the outer link plate and the inner link plate.

[0003] The current development trend of motorcycles is diverse, and the trend of consumption upgrading in China is obvious. The attribute of motorcycles as tools is weakening, while the play attribute is strengthening. A simple and more comfortable driving experience cannot meet the needs of consumers. Many consumers pursue exciting and breakthrough driving experiences. In this case, ordinary motorcycles are also developing towards greater power and faster acceleration. As the power of motorcycles increases, the impact on the chain from faster acceleration also increases. Summary of the Invention

[0004] Aiming at the problems existing in the above background art introduction, the purpose of the present invention is to provide a flanged impact-resistant motorcycle chain, which increases the contact area between the pin and the outer plate and reduces the contact surface pressure, can effectively improve the impact resistance performance, and at the same time, the flanging of the outer link plate strengthens its anti-bending ability and avoids premature bending failure.

[0005] The technical solution adopted by the present invention is:

[0006] A flanged impact-resistant motorcycle chain includes an outer link plate and an inner link plate. The outer link plate is installed outside the inner link plate to connect radially adjacent inner link plates. Two opposite outer link plates and a pin are assembled to form an outer link section, and the inner link plate and the pin are assembled to form an independent inner link section. A flanging structure is provided on the entire circumference of the outer surface of the outer link plate. Through the flanging strengthening of the outer link plate, the present invention increases the contact area between the pin and the outer plate and reduces the contact surface pressure, can effectively improve the impact resistance performance. At the same time, the flanging of the outer link plate strengthens its anti-bending ability and avoids premature bending failure.

[0007] Further, the flanging height in the middle of the outer link plate is not greater than the flanging height at both ends of the outer link plate. Under normal working conditions, the force at both ends of the link plate is significantly higher than that in the middle during use. By mainly strengthening both ends, reducing the flanging height in the middle can reduce the weight of the link plate while achieving the strengthening effect. At the same time, there is a release area for the residual force of flanging deformation, which increases the finished product rate and reduces the bending, prolonging the service life of the bending die.

[0008] Further, the flanges in the middle of the outer link plate and the flanges at both ends of the outer link plate are connected by a ramp transition.

[0009] Further, when the outer link plate is produced, it is flanged first and then punched.

[0010] Further, a bevel structure is provided around the outer surface of the inner link plate to guide lubricating oil.

[0011] Further, a sleeve is sleeved outside the pin shaft between the outer link plates, and a roller is provided outside the sleeve between the inner link plates.

[0012] Further, a connecting link plate is provided at the end of the chain, and the connecting link plate is arranged outside the inner link plate and connected by a connecting pin shaft.

[0013] Further, elastic lock pieces for fixing are provided at the ends of the two connecting pin shafts.

[0014] Compared with the prior art, the remarkable advantages of the present invention include: after flanging, the contact area between the pin shaft and the link plate becomes larger, and under the same force, the pressure is reduced. At the same time, the edge of the link plate after flanging also plays the role of a reinforcing rib, improving the anti-deformation strength of the link plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a partial structural sectional view of the present invention.

[0016] Figure 2 is Figure 1 the top view structural schematic diagram of

[0017] Figure 3 is a sectional structural schematic diagram of the outer link plate of the present invention.

[0018] Figure 4 is the top view structural schematic diagram of the outer link plate of the present invention.

[0019] Figure 5 is a processing comparison schematic diagram between the outer link plate of the present invention and the traditional outer link plate.

[0020] Figure 6 is a comparison schematic diagram after the outer link plate of the present invention and the traditional outer link plate are respectively assembled with the pin shaft.

[0021] In the figure: 1. Outer link plate; 11. Flange structure; 2. Inner link plate; 21. Hypotenuse structure; 3. Sleeve; 4. Pin shaft; 5. Roller; 6. Connecting pin shaft; 7. Connecting link plate; 8. Elastic lock piece. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be further described below in conjunction with specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternative solutions, improvement solutions, and equivalent solutions that may be included within the scope of the claims.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0026] Refer to Figures 1-6, this embodiment provides a flanged impact-resistant motorcycle chain, which includes an outer link plate 1 and an inner link plate 2. The outer link plate 1 is installed on the outside of the inner link plate 2 to connect radially adjacent inner link plates 2. Two opposite outer link plates 1 and a pin 4 are assembled to form an outer link. The inner link plate 2 and the pin 4 are assembled to form an independent inner link. A flanging structure 11 is provided around the outer surface of the outer link plate 1, thereby forming a flanged strengthened outer link plate. In the present invention, through the flanging strengthening of the outer link plate 1, the contact area between the pin 4 and the outer link plate 1 is increased, and the contact surface pressure is reduced, which can effectively improve the impact resistance. At the same time, the flanging of the outer link plate 1 strengthens its bending resistance and avoids premature bending failure.

[0027] In this embodiment, the flanging height in the middle of the outer link plate 1 is not greater than the flanging height at both ends of the outer link plate. Under normal working conditions, the force at both ends of the link plate is significantly higher than that in the middle during use. Mainly strengthen both ends. Under the condition of achieving the strengthening effect, reducing the flanging height in the middle can reduce the weight of the link plate. At the same time, there is a release area for the residual force of flanging deformation, increasing the yield rate and reducing the bending, prolonging the service life of the bending die. The flanging in the middle of the outer link plate 1 and the flanging at both ends of the outer link plate 2 are all connected by a slope transition. The outer link plate 1 is flanged first and then punched. Specifically, the production process of the outer link plate: 1. Outer shape blanking, 2. Chain plate turning over, 3. Flanging, 4. Punching, 5. Secondary blanking. Compared with the conventional process flow: 1. Punching; 2. Hole extrusion, 3. Blanking; in addition to meeting the forming requirements, the additional chain plate turning over reduces the risk of cracking caused by excessive unilateral deformation during bending. Canceling the hole extrusion and replacing it with secondary blanking can control the punching deformation and improve the punching quality.

[0028] In this embodiment, a bevel structure 21 is provided around the outer surface of the inner link plate 2, which can guide lubricating oil. A sleeve 3 is sleeved outside the pin 4 between the outer link plates 1, and a roller 5 is provided outside the sleeve 3 between the inner link plates 2.

[0029] A connecting link plate 7 is provided at the end of the chain in this embodiment. The connecting link plate 7 is arranged outside the inner link plate 2 and is connected by a connecting pin 6. Elastic lock pieces 8 for fixing are provided at the ends of the two connecting pins 6.

[0030] When the present invention is in operation, the chain rotates. The pin 4 and the sleeve 3 rub against each other, and the roller 5 and the sprocket are periodically meshed and impacted. The pin 4 and the outer link plate 1 have a larger contact area and can better withstand the impact generated under greater acceleration.

[0031] After the present invention is flanged, the contact area between the pin and the link plate becomes larger. Under the same force, the pressure is reduced. At the same time, the edge of the link plate after flanging also plays the role of a reinforcing rib, improving the anti-deformation strength of the link plate.

Claims

1. A folded edge impact-resistant motorcycle chain, comprising an outer link plate and an inner link plate, wherein the outer link plate is mounted on the outer side of the inner link plate to connect radially adjacent inner link plates, two opposite outer link plates are assembled with a pin to form an outer link, and the inner link plate is assembled with a pin to form an independent inner link, characterized in that: The outer surface of the outer link plate is provided with a folding structure around one circumference.

2. The folded edge impact-resistant motorcycle chain according to claim 1, characterized in that: The folding height of the middle part of the outer link plate is not greater than the folding height of the two ends of the outer link plate.

3. The folded edge impact-resistant motorcycle chain according to claim 2, characterized in that: The folded edges in the middle of the outer link plate and the folded edges at both ends of the outer link plate are connected via a slope transition.

4. The folded edge impact-resistant motorcycle chain according to claim 1, characterized in that: The outer link plate is first folded and then punched during production.

5. The folded edge impact-resistant motorcycle chain according to claim 1, characterized in that: Both ends of the outer surface of the inner link plate are provided with inclined surface structures.

6. The folded edge impact-resistant motorcycle chain according to claim 1, characterized in that: A sleeve is disposed outside the pin shaft between the outer link plates, and a roller is disposed outside the sleeve between the inner link plates.

7. The folded edge impact-resistant motorcycle chain according to claim 1, characterized in that: The end of the chain is provided with a connecting chain plate, which is arranged outside the inner chain plate and connected through a connecting pin shaft.

8. The folded edge impact-resistant motorcycle chain according to claim 7, characterized in that: The ends of the two connecting pin shafts are provided with elastic locking pieces for fixing.

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