Motorcycle rear rocker arm transmission mechanism and motorcycle

Abstract

The motorcycle rear rocker arm transmission mechanism comprises a rear rocker arm and a transmission chain wheel, the rear rocker arm comprises an installation portion and a cantilever portion, the installation portion is provided with an installation groove and a circular groove, the installation groove penetrates through the installation portion, the circular groove extends in the horizontal direction, and the circular groove is used for fixing the rear rocker arm. The end of the cantilever part is used for being rotationally connected with an axle of a rear wheel of the motorcycle, the transmission chain wheel is installed in the installation groove and comprises a first chain wheel and a second chain wheel, the first chain wheel and the second chain wheel are coaxially arranged, and the first chain wheel is connected with a front chain wheel of the motorcycle through a first chain. And the second chain wheel is connected with a rear chain wheel of the motorcycle through a second chain. According to the utility model, the shorter chain can be suitable for the large-wheelbase motorcycle.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, in particular to a rear rocker arm transmission mechanism for a motorcycle. Background Art

[0002] At present, for some motorcycles with a large wheelbase, the center distance between the front sprocket and the rear sprocket is large, and the existing chain is short, making it difficult to directly connect the front sprocket and the rear sprocket. Utility Model Content

[0003] The purpose of the present invention is to solve at least one of the technical problems in the prior art. To this end, the present invention provides a motorcycle rear swing arm transmission mechanism that can make a shorter chain suitable for motorcycles with a long wheelbase.

[0004] The utility model also provides a motorcycle with the motorcycle rear rocker arm transmission mechanism.

[0005] According to the first aspect of the present invention, a motorcycle swingarm transmission mechanism includes: a swingarm, including a mounting portion and a cantilever portion, the mounting portion is provided with a mounting groove and a circular groove, the mounting groove passes through the mounting portion, the circular groove extends in a horizontal direction, the circular groove is used to fix the swingarm, and the end of the cantilever portion is used to be rotatably connected to the axle of the rear wheel of the motorcycle; a transmission sprocket, installed in the mounting groove, the transmission sprocket includes a first sprocket and a second sprocket, the first sprocket and the second sprocket are coaxially arranged, the first sprocket is connected to the front sprocket of the motorcycle through a first chain, and the second sprocket is connected to the rear sprocket of the motorcycle through a second chain.

[0006] The motorcycle rear swing arm transmission mechanism according to the first aspect of the embodiment of the utility model has at least the following beneficial effects: by installing a transmission sprocket in the rear swing arm, the transmission sprocket includes a first sprocket and a second sprocket, the first sprocket is connected to the front sprocket of the motorcycle through a first chain, and the second sprocket is connected to the rear sprocket of the motorcycle through a second chain. When the front sprocket rotates, the rear sprocket can be driven to rotate by the transmission sprocket to realize transmission, so that a motorcycle with a large wheelbase can also use a shorter chain.

[0007] According to some embodiments of the present invention, the rear swing arm is provided with a first avoidance groove, and the first avoidance groove is used to avoid the first chain.

[0008] According to some embodiments of the present invention, the rear swing arm is provided with a second avoidance groove, and the second avoidance groove is used to avoid the second chain.

[0009] According to some embodiments of the present invention, the rear rocker arm is provided with a third avoidance groove, and the third avoidance groove is used to avoid the shock-absorbing spring.

[0010] According to some embodiments of the present invention, the width of the mounting portion is greater than the width of the cantilever portion.

[0011] According to some embodiments of the present invention, a bearing is provided in the mounting groove, and the bearing is rotatably connected to the transmission sprocket.

[0012] According to some embodiments of the present invention, the mounting portion is provided with a groove, the groove cover is provided with an end cover, the end cover is used to fix the bearing, and the end cover is fixed in the groove by bolts.

[0013] According to some embodiments of the present invention, there are two grooves, and the two grooves are symmetrically arranged.

[0014] According to some embodiments of the present invention, a sleeve structure is provided at the end of the cantilever portion, and the sleeve structure is used to be connected to the axle of the rear wheel. The sleeve structure is provided with an opening, and the sleeve structure is tightened to the axle of the rear wheel by bolts.

[0015] According to the second embodiment of the present invention, the motorcycle includes: the motorcycle rear swing arm transmission mechanism as in the first embodiment; a front sprocket connected to the first sprocket via the first chain; and a rear sprocket connected to the second sprocket via the second chain.

[0016] The motorcycle according to the second aspect of the embodiment of the utility model comprises the motorcycle rear swing arm transmission mechanism of the embodiment of the first aspect, and therefore has at least the above-mentioned beneficial effects, which will not be described in detail here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic structural diagram of a rear swing arm transmission mechanism for a motorcycle according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of a rear swing arm of a motorcycle rear swing arm transmission mechanism according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of a rear swing arm of a motorcycle rear swing arm transmission mechanism according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of a transmission sprocket of a motorcycle rear swing arm transmission mechanism according to an embodiment of the present utility model.

[0023] Reference numerals:

[0024] Motorcycle rear swing arm transmission mechanism 1000;

[0025] Swingarm 100, mounting portion 110, cantilever portion 120, mounting groove 130, circular groove 140, first avoidance groove 150, second avoidance groove 160, third avoidance groove 170, groove 180, first bolt hole 181, sleeve structure 190, second bolt hole 191, opening 192;

[0026] Drive sprocket 200, first sprocket 210, second sprocket 220, first chain 230, second chain 240;

[0027] Front sprocket 300;

[0028] Rear sprocket 400. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] Currently, for some motorcycles with a large wheelbase, the center distance between the front sprocket 300 and the rear sprocket 400 is relatively large, and the existing chain is relatively short, making it difficult to connect the front sprocket 300 and the rear sprocket 400.

[0031] It should also be noted that if a custom-made chain is too long, even if the chain can be used with the front sprocket 300 and the rear sprocket 400, the longer chain length will lead to poor meshing stability between the chain and the front sprocket 300 and the rear sprocket 400. In addition, the chain will be subjected to greater gravity, causing the chain to sag and easily fall off. Therefore, it is necessary to have a shorter chain that can also be used on motorcycles with a longer wheelbase.

[0032] Based on this, refer to Figure 1As shown, a motorcycle swingarm transmission mechanism 1000 provided by an embodiment of the utility model includes a swingarm 100 and a transmission sprocket 200. The swingarm 100 includes a mounting portion 110 and a cantilever portion 120. The mounting portion 110 is provided with a mounting groove 130 and a circular groove 140. The mounting groove 130 is square in shape and passes through the mounting portion 110. The circular groove 140 is located at the front position of the swingarm 100. The circular groove 140 extends in the horizontal direction. The circular groove 140 is used to fix the swingarm 100. The circular groove 140 can cooperate with a circular shaft, or the circular groove 140 is fixed to the motorcycle frame. The end of the cantilever portion 120 is used to be rotatably connected to the axle of the rear wheel of the motorcycle. It can also be understood that the tail of the cantilever portion 120 is rotatably connected to the axle of the rear wheel.

[0033] Reference Figure 1 、 Figure 2 and Figure 4 As shown, specifically, the transmission sprocket 200 is installed in the installation groove 130. The transmission sprocket 200 includes a first sprocket 210 and a second sprocket 220. The first sprocket 210 and the second sprocket 220 are coaxially arranged. The first sprocket 210 is connected to the front sprocket 300 of the motorcycle via a first chain 230, and the second sprocket 220 is connected to the rear sprocket 400 of the motorcycle via a second chain 240. When the front sprocket 300 rotates, the rear sprocket 400 can be driven to rotate through the transmission sprocket 200.

[0034] In this embodiment, a transmission sprocket 200 is installed in the rear swing arm 100. The transmission sprocket 200 includes a first sprocket 210 and a second sprocket 220. The first sprocket 210 is connected to the front sprocket 300 of the motorcycle via a first chain 230, and the second sprocket 220 is connected to the rear sprocket 400 of the motorcycle via a second chain 240. This allows transmission to be achieved, allowing motorcycles with longer wheelbases to use a shorter chain. In addition, the transmission through the first chain 230 and the second chain 240 allows the chain to be shorter, ensuring a more stable chain connection and preventing it from falling off.

[0035] Reference Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the rear swing arm 100 is provided with a first avoidance groove 150, which extends along the length direction of the first chain 230. The first avoidance groove 150 is used to avoid the first chain 230 and prevent the first chain 230 from interfering with the rear swing arm 100. Specifically, the first avoidance groove 150 can be provided at the top and bottom of the rear swing arm 100.

[0036] According to some embodiments of the present invention, the rear swing arm 100 is provided with a second avoidance groove 160. The second avoidance groove 160 extends along the length of the second chain 240. The second avoidance groove 160 is used to avoid the second chain 240 from interfering with the rear swing arm 100. Specifically, the second avoidance groove 160 can be provided at the top and bottom of the rear swing arm 100.

[0037] It is understandable that the first avoidance groove 150 and the second avoidance groove 160 may both be in communication with the mounting groove 130 .

[0038] Reference Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the rear swing arm 100 is provided with a third escape groove 170. The third escape groove 170 runs through the rear swing arm 100 and is used to escape the shock absorber spring. The shock absorber spring extends into the third escape groove 170. A mounting plate can be provided at the bottom of the third escape groove 170, and the bottom of the shock absorber spring is connected to the mounting plate to facilitate installation of the shock absorber spring. Because the rear swing arm 100 is used on a motorcycle with a long wheelbase, the shock absorber spring can be positioned directly below the user, providing a better shock absorption effect.

[0039] Reference Figure 2 As shown, according to some embodiments of the present invention, the width of the mounting portion 110 is greater than the width of the cantilever portion 120, which can enhance the structural strength of the mounting portion 110 and ensure safety. It should be noted that since the mounting portion 110 is located between the front engine and the rear wheel of the motorcycle, there is a large space, the mounting portion 110 can be set wider, and the mounting groove 130 is located between the mounting portion 110 and the cantilever portion 120 to enhance the structural strength.

[0040] According to some embodiments of the present invention, a bearing is provided in the mounting groove 130 , and the bearing is rotatably connected to the transmission sprocket 200 . Specifically, two bearings can be provided, and the two bearings are connected to both ends of the transmission sprocket 200 .

[0041] Reference Figure 2 As shown, according to some embodiments of the present invention, the mounting portion 110 is provided with a groove 180, and the groove 180 is covered with an end cover, which is used to fix the bearing. A first bolt hole 181 is provided in the groove 180, and the end cover is fixed in the groove 180 by bolts, which makes installation and disassembly more convenient.

[0042] Reference Figure 2 As shown, according to some embodiments of the present invention, there are two grooves 180 , which are symmetrically arranged and correspond to the two bearings respectively. There are also two end covers, one end cover corresponding to one groove 180 .

[0043] Reference Figure 3 As shown, according to some embodiments of the present invention, a sleeve structure 190 is provided at the end of the cantilever portion 120, and the sleeve structure 190 is used to connect to the axle of the rear wheel. The sleeve structure 190 is provided with an opening 192, and the sleeve structure 190 is fastened to the axle of the rear wheel by bolts.

[0044] According to an embodiment of the present utility model, the motorcycle includes the motorcycle rear swing arm transmission mechanism 1000 of the above embodiment, and the motorcycle also includes a front sprocket 300 and a rear sprocket 400. The front sprocket 300 is connected to the first sprocket 210 through the first chain 230, and the rear sprocket 400 is connected to the second sprocket 220 through the second chain 240. Since the motorcycle of this embodiment includes the motorcycle rear swing arm transmission mechanism 1000 of the above embodiment, it has all the above-mentioned technical effects, which will not be repeated here.

[0045] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] In the description of this utility model, if there is a description of first or second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0047] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0048] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motorcycle rear rocker arm transmission mechanism, characterized in that: include: A rear swing arm comprises a mounting portion and a cantilever portion, wherein the mounting portion is provided with a mounting groove and a circular groove, wherein the mounting groove passes through the mounting portion and the circular groove extends in a horizontal direction and is used to fix the rear swing arm, and an end portion of the cantilever portion is used to be rotatably connected to the axle of the rear wheel of the motorcycle; A transmission sprocket is installed in the installation groove, and the transmission sprocket includes a first sprocket and a second sprocket. The first sprocket and the second sprocket are coaxially arranged. The first sprocket is connected to the front sprocket of the motorcycle through a first chain, and the second sprocket is connected to the rear sprocket of the motorcycle through a second chain.

2. The motorcycle rear swing arm transmission mechanism according to claim 1, characterized in that: The rear swing arm is provided with a first avoidance groove, and the first avoidance groove is used to avoid the first chain.

3. The rear swing arm transmission mechanism of a motorcycle according to claim 1, characterized in that: The rear swing arm is provided with a second avoidance groove, and the second avoidance groove is used to avoid the second chain.

4. The rear swing arm transmission mechanism of a motorcycle according to claim 1, characterized in that: The rear rocker arm is provided with a third avoidance groove, and the third avoidance groove is used to avoid the shock absorber spring.

5. The rear swing arm transmission mechanism of a motorcycle according to claim 1, characterized in that: The width of the mounting portion is greater than the width of the cantilever portion.

6. The motorcycle rear swing arm transmission mechanism according to claim 1, characterized in that: A bearing is provided in the mounting groove, and the bearing is rotatably connected to the transmission sprocket.

7. The motorcycle rear swing arm transmission mechanism according to claim 6, characterized in that: The mounting portion is provided with a groove, and the groove cover is provided with an end cover. The end cover is used to fix the bearing, and the end cover is fixed in the groove by bolts.

8. The motorcycle rear swing arm transmission mechanism according to claim 7, characterized in that: There are two grooves, and the two grooves are symmetrically arranged.

9. The motorcycle rear swing arm transmission mechanism according to claim 1, characterized in that: A sleeve structure is provided at the end of the cantilever portion, and the sleeve structure is used to be connected to the axle of the rear wheel. The sleeve structure is provided with an opening, and the sleeve structure is clamped to the axle of the rear wheel by bolts.

10. A motorcycle, characterized in that include: The motorcycle rear swing arm transmission mechanism according to any one of claims 1 to 9; a front sprocket connected to the first sprocket via the first chain; The rear sprocket is connected to the second sprocket through the second chain.

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