Mounting structure and vehicle provided with same

Abstract

The application relates to the technical field of straddle-type vehicles, and provides a mounting structure and a vehicle provided with the same. The mounting structure is suitable for mounting a rear swing arm in a vehicle frame in a straddle-type vehicle, and comprises a pivot, a bushing, a bearing and a nut. The pivot is arranged on the vehicle frame, the bushing is sleeved on one end of the pivot extending into the rear swing arm, the bearing is arranged between the bushing and the rear swing arm, and the nut is connected to the other end of the pivot and fixes the bushing between the pivot and the vehicle frame. The application can realize the disconnection design of the mounting pivot of the rear swing arm, and is helpful to the arrangement of a transmission shaft in the straddle-type vehicle.

Description

Technical Field

[0001] This application relates to the field of straddle-type vehicle technology, and particularly to an installation structure and a vehicle equipped with it. Background Technology

[0002] In motorcycles and other straddle-type vehicles, the rear swingarm, as a crucial rear component, not only connects the rear wheel to the frame but also works in conjunction with the rear shock absorber to reduce the transmission of rear wheel vibrations to the frame, thus improving riding comfort. Currently, the rear swingarm in straddle-type vehicles is generally connected to the frame via a single pivot that runs from side to side. While this allows for the installation of the swingarm, it also presents a drawback in terms of the arrangement of the driveshaft in straddle-type vehicles. Utility Model Content

[0003] In view of this, this application aims to provide an installation structure that facilitates the arrangement of the drive shaft in a motorcycle-type vehicle.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] A mounting structure suitable for mounting a rear swingarm in a motorcycle frame, comprising a pivot, bushing, bearing and nut;

[0006] The pivot is mounted on the frame, the bushing is fitted on the end of the pivot that extends into the rear rocker arm, and the bearing is located between the bushing and the rear rocker arm;

[0007] The nut is connected to the other end of the pivot and secures the bushing between the pivot and the frame.

[0008] Furthermore, this also includes bolts;

[0009] The bolt is connected to the pivot and is located at the same end of the pivot as the nut, and the bolt locks the nut at the end of the pivot.

[0010] Furthermore, the pivot has an axially through central hole, and the bolt is connected to the central hole.

[0011] Furthermore, the screwing direction between the nut and the pivot is opposite to the screwing direction between the bolt and the pivot.

[0012] Furthermore, the end of the pivot that extends into the rear rocker arm is provided with a shoulder, and the nut fixes the bushing between the shoulder and the frame.

[0013] Furthermore, the pivot has a first shaft segment and a second shaft segment connected together, the first shaft segment being near the end of the pivot that extends into the rear rocker arm, and the second shaft segment being near the end of the pivot that is connected to the nut;

[0014] The bushing has an inner bore with a first bore section and a second bore section connected together, and the bushing is fitted onto the pivot through the second bore section;

[0015] The first hole segment and the first shaft segment and the second shaft segment, as well as the second hole segment and the first shaft segment, are clearance fits, while the second hole segment and the second shaft segment are interference fits.

[0016] Furthermore, the bearing is a deep groove ball bearing.

[0017] Furthermore, a retaining ring is provided on the outer side of the bearing, and the retaining ring is fitted onto the rear rocker arm.

[0018] Furthermore, a sealing ring is provided on the outer side of the retaining ring, and the sealing ring is located between the rear rocker arm and the bushing.

[0019] Compared with related technologies, this application has the following advantages:

[0020] (1) The mounting structure described in this application allows the pivot to pass through the frame, the bushing to be fitted on the end of the pivot that extends into the rear swingarm, and the bearing to be located between the bushing and the rear swingarm. The nut is connected to the other end of the pivot and the bushing is fixed between the pivot and the frame. By utilizing the cooperation of the pivot, bushing and nut, not only can the pivot with bushing be connected to the frame, but the bearing can also be used to support the rotation of the rear swingarm on the frame. At the same time, the pivot for connecting the rear swingarm to the frame can be designed to be split on the left and right by only the end of the pivot extending into the rear swingarm. This avoids the inconvenience caused by using a whole pivot for the arrangement of the drive shaft in the motorcycle and helps the arrangement of the drive shaft in the motorcycle.

[0021] (2) By further setting the bolts connected to the pivot, and making the bolts able to lock the nut at the end of the pivot, the possibility of the nut coming loose can be reduced, which helps to improve the stability of the connection of the pivot to the frame.

[0022] (3) An axially through central hole is provided in the pivot, and the bolt is connected in the central hole. This facilitates the connection of the bolt on the pivot. The hollow design of the pivot allows the tooling inserted in the pivot to be used to assemble the pivot on the frame during installation, thus avoiding the need to provide an opening for pivot assembly on the rear rocker arm. This helps to ensure the structural strength and rigidity of the rear rocker arm, as well as the sealing of the rear rocker arm.

[0023] (4) The screwing direction between the nut and the pivot is opposite to that between the bolt and the pivot. When the bolt is assembled, the bolt drives the pivot to rotate and tighten with the nut. There is no need to use a separate tool to clamp and fix the pivot, which facilitates the bolt assembly operation. At the same time, when the nut is loose, the bolt is tightening, which can effectively prevent the nut from loosening and ensure the reliability of the pivot connection on the frame.

[0024] (5) A shoulder is provided at one end of the pivot extending into the rear rocker arm, and the nut fixes the bushing between the shoulder and the frame. This makes it easy to fix the bushing between the pivot and the frame. It also has the advantages of simple structure, easy molding, and good structural stability.

[0025] (6) The first hole section in the bushing inner hole and the first shaft section and the second shaft section on the pivot, as well as the second hole section in the bushing inner hole and the first shaft section on the pivot, are clearance fits, and the second hole section in the bushing inner hole and the second shaft section on the pivot are interference fits. After the bushing is fitted on the pivot, the bushing can slide freely along the pivot but will not fall off the pivot. This not only facilitates the assembly between the bushing and the pivot, but also prevents the pivot, bushing and bearing from falling apart after assembly. It also enables the pivot to slide freely axially during the installation of the rear rocker arm, which helps to improve the convenience of the installation operation of the left side mounting structure.

[0026] (7) The bearing adopts a deep groove ball bearing, which has a simple structure, is easy to use, has a long service life, and excellent high-speed performance. It can also take advantage of the characteristics of deep groove ball bearings to withstand combined radial and axial loads, improve the bearing's adaptability to the swing arm swing, and enhance the stability of the swing arm on the frame.

[0027] (8) A retaining ring is installed on the outside of the bearing and is attached to the rear rocker arm. This ring can work with the rear rocker arm to limit the bearing and prevent it from falling off, thus ensuring the stability of the connection between the bearing and the rear rocker arm.

[0028] (9) A sealing ring is installed on the outside of the bearing between the rear rocker arm and the bushing. This can achieve waterproof and dustproof protection for the bearing, ensure smooth and reliable operation of the bearing, and help improve the service life of the bearing.

[0029] Another object of this application is to provide a vehicle, which is a straddle-type vehicle, having a rear swingarm and the mounting structure described above.

[0030] The vehicle described in this application adopts the mounting structure as described above, which enables the rear swingarm in a motorcycle to be rotated and mounted on the frame. At the same time, it also enables the pivot for connecting the rear swingarm to the frame to be designed with left and right breaks. This avoids the inconvenience caused by using a single pivot in the arrangement of the drive shaft in a motorcycle and facilitates the arrangement of the drive shaft in a motorcycle, thus having good practicality. Attached Figure Description

[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the rear rocker arm mounted on the vehicle frame according to an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the vehicle frame described in the embodiments of this application;

[0034] Figure 3 This is a schematic diagram of the structure of the rear rocker arm described in the embodiment of this application;

[0035] Figure 4 This is a cross-sectional view of the mounting position of the rear swingarm to the vehicle frame as described in the embodiments of this application;

[0036] Figure 5 for Figure 4 A magnified view of part A in the middle;

[0037] Figure 6 This is a schematic diagram of the structure of the pivot described in the embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the bushing structure described in the embodiments of this application;

[0039] Figure 8 This is a schematic diagram of the bushing inner bore as described in an embodiment of this application;

[0040] Figure 9 This is a schematic diagram illustrating the fit between the pivot and the bushing as described in an embodiment of this application;

[0041] Figure 10 for Figure 4 A magnified view of part B in the middle section;

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Rear swingarm; 2. Frame; 3. Left side mounting structure; 4. Right side mounting structure;

[0044] 1a. Sleeve; 1b. Drive shaft clearance hole; 1c. Inner cavity;

[0045] 2a. Fork arm; 201. Mounting hole; 301. Pivot; 302. Bushing; 303. Bearing; 304. Nut; 305. Bolt; 306. Retaining ring; 307. Sealing ring; 401. Mounting shaft; 402. Cylindrical needle roller bearing; 403. Sealing structure;

[0046] 3011, Center hole; 3011a, Tightening hole section; 3011b, Threaded hole section; 3011c, Through hole section; 3012, Shoulder; 301a, First shaft section; 301b, Second shaft section; 301c, Third shaft section; 3021, Bearing mounting groove; 3022, Inner hole; 3022a, First hole section; 3022b, Second hole section. Detailed Implementation

[0047] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0049] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0051] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0053] An embodiment of the first aspect of this application provides a mounting structure suitable for mounting a rear swingarm 1 in a frame 2 of a motorcycle, and the mounting structure, through its innovative design in mounting form, facilitates the arrangement of the drive shaft in the motorcycle.

[0054] In related technologies, a motorcycle-type vehicle generally refers to a motorcycle. As one of the important components at the rear of a motorcycle-type vehicle, the swingarm is usually pivotally connected to the frame at one end and connected to the rear wheel at the other end. A rear shock absorber connected to the frame is also located in the middle of the swingarm. In a motorcycle-type vehicle, the swingarm not only connects the rear wheel to the frame, but also works in conjunction with the rear shock absorber to reduce the transmission of rear wheel vibrations to the frame, thereby improving the riding comfort of the vehicle.

[0055] Currently, in traditional designs, the rear swingarm in motorcycles is typically connected to the frame via a single pivot that runs through the left and right sides of the swingarm. While this mounting method allows for the installation of the rear swingarm, the location of the swingarm necessitates the placement of a driveshaft that connects to the rear wheel drive. The through-type pivot requires the driveshaft to be designed to avoid obstructing its movement, making driveshaft placement in motorcycles inconvenient.

[0056] In view of this, in order to overcome the shortcomings of related technologies, the installation structure of this embodiment combines... Figures 1 to 5 As shown, the overall design includes a pivot 301, a bushing 302, a bearing 303, and a nut 304.

[0057] The pivot 301 is mounted on the frame 2, the bushing 302 is fitted onto the end of the pivot 301 that extends into the rear rocker arm 1, and the bearing 303 is disposed between the bushing 302 and the rear rocker arm 1. The nut 304 is connected to the other end of the pivot 301, and the nut 304 also fixes the bushing 302 between the pivot 301 and the frame 2.

[0058] Thus, with the above configuration, the pivot 301 is mounted on the frame 2, the bushing 302 is fitted onto the end of the pivot 301 that extends into the rear rocker arm 1, and the bearing 303 is located between the bushing 302 and the rear rocker arm 1. The nut 304 is connected to the other end of the pivot 301, and the bushing 302 is fixed between the pivot 301 and the frame 2. In this embodiment, the cooperation of the pivot 301, the bushing 302, and the nut 304 can be used to mount the pivot 301 with the bushing 302. 01 is connected to the frame 2. Not only can the bearing 303 support the rotation of the rear swingarm 1, enabling the rear swingarm 1 to be rotated and mounted on the frame 2, but also the pivot 301, which is used to connect the rear swingarm 1 to the frame 2, can be designed to be split on the left and right sides by only one end of the pivot 301 extending into the rear swingarm 1. This avoids the inconvenience caused by using a whole pivot 301 for the arrangement of the drive shaft in the motorcycle type, thus achieving the effect of facilitating the arrangement of the drive shaft in the motorcycle type.

[0059] Based on the above overall introduction, specifically, as an example, let's still combine... Figure 1 and Figure 3 As shown, the rear swing arm 1 in this embodiment can be, for example, a single swing arm, and the shock absorber located between the rear swing arm 1 and the frame 2 is also centrally mounted.

[0060] In addition, continue as Figure 1 and Figure 2 As shown, the frame 2 of this embodiment also has two forks 2a arranged opposite to each other in the structure. The two forks 2a are arranged opposite to each other in the straddle-type vehicle. Mounting holes 201 are also provided on the two forks 2a for mounting the rear swingarm 1.

[0061] As an exemplary implementation, the mounting structure of this embodiment is used to mount one end of the rear rocker arm 1 to the fork arm 2a on the same side, and still with... Figures 1 to 10 Taking the orientation shown as an example, the installation structure of this embodiment can be, for example, rotating the left end of the rear rocker arm 1 onto the fork arm 2a on the same side.

[0062] At this time, still Figures 1 to 10 The directions shown are based on the following. For ease of description, the mounting structure for mounting the left end of the rear rocker arm 1 in this embodiment can be referred to as the left mounting structure 3, and the mounting structure for mounting the right end of the rear rocker arm 1 can be referred to as the right mounting structure 4.

[0063] Continue as Figure 3As shown, in this embodiment, the end of the rear rocker arm 1 connected to the frame 2 is the end with the sleeve 1a (specifically the front end of the rear rocker arm 1). The sleeve 1a in the rear rocker arm 1 has an inner cavity 1c, which extends through the rear rocker arm 1 from left to right. Parts of the aforementioned left mounting structure 3 and right mounting structure 4 are located in the inner cavity 1c to achieve the rotational mounting of the rear rocker arm 1 on the frame 2.

[0064] In addition, in this embodiment, the drive shaft in the above-mentioned straddle-type vehicle is specifically set in the drive shaft clearance hole 1b on the rear rocker arm 1. The drive shaft clearance hole 1b passes through the rear rocker arm 1b from front to back and also intersects with the inner cavity 1c at the position of the sleeve 1a.

[0065] At this time, by adopting the installation structure of this embodiment, the pivot connecting the rear rocker arm 1 and the frame 2 can be disconnected to the left and right, and the drive shaft can be passed through the drive shaft clearance hole 1b. After passing through, the front end of the drive shaft is generally connected to the power output end of the powertrain (such as the engine) in the vehicle through a universal joint, and the rear end is connected to the rear final drive to realize the transmission of power from the powertrain to the rear wheels of the vehicle.

[0066] Continue to combine Figure 4 and Figure 5 As shown, as mentioned above, in this embodiment, one end of the mounting portion, namely the pivot 301 in the left mounting structure 3, extends into the inner cavity 1c of the rear rocker arm 1, specifically only one end extends into the inner cavity 1c of the rear rocker arm 1. Meanwhile, the bearing 303, which is mounted on the pivot 301 via the bushing 302, is press-fitted to the left end of the inner cavity 1c to enable a rotational connection between the pivot 301 and the rear rocker arm 1.

[0067] Still Figure 4 and Figure 5 As shown, in some exemplary embodiments, the mounting structure of this embodiment further includes a bolt 305 connected to the pivot 301 and located at the same end of the pivot as the nut 304, and the bolt 305 also locks the nut 304 to the end of the pivot 301.

[0068] At this point, it is understandable that by further configuring the bolt 305 connected to the pivot 301, and making the bolt 305 able to lock the nut 304 at the end of the pivot 301, the possibility of the nut 304 coming loose can be reduced, which helps to improve the stability of the connection of the pivot 301 to the frame 2.

[0069] In this embodiment, in some exemplary implementations, the pivot 301 also has an axially through central hole 3011, thereby making the pivot 301 hollow, and the bolt 305 is specifically connected in the central hole 3011.

[0070] In this way, by providing an axially penetrating central hole 3011 in the pivot 301 and connecting the bolt 305 in the central hole 3011, it is convenient to realize the connection of the bolt 305 on the pivot 301. Furthermore, by utilizing the hollow design of the pivot 301, when installing the rear rocker arm 1, the tooling inserted in the pivot 301 can be used to assemble the pivot 301 on the frame 2, thereby avoiding the need to provide an opening on the rear rocker arm 1 for the assembly of the pivot 301. This helps to ensure the structural strength and rigidity of the rear rocker arm 1, as well as the internal sealing of the rear rocker arm 1.

[0071] See also Figure 5 and Figure 6 As shown in the illustration, in some exemplary embodiments, the end of the pivot 301 that extends into the rear rocker arm 1 is provided with a shoulder 3012. The shoulder 3012 is used to fix the bushing 302 between the pivot 301 and the fork arm 2a in the frame 2 after the nut 304 is connected, so as to realize the fixed arrangement of the left mounting structure 3 as a whole on the fork arm 2a in the frame 2, and thereby realize the rotational arrangement of the rear rocker arm 1 on the frame 2 by means of the bearing 303.

[0072] It is understandable that by providing a shoulder 3012 at one end of the pivot 301 that extends into the rear rocker arm 1, and by fixing the bushing 302 between the shoulder 3012 and the frame 2 with a nut 304, it is easy to fix the bushing 302 between the pivot 301 and the frame 2. It also obviously has the advantages of simple structure, easy molding, and good structural stability.

[0073] It is worth noting that, in specific implementation, as an example, please refer to [reference needed]. Figure 5 As shown, for example, the inner ring of the bearing 303 can be made to contact the shoulder 3012 at the end of the pivot 301, thereby indirectly achieving the fixed arrangement of the bushing 302 between the pivot 301 and the frame 2 by utilizing the inner ring of the bearing 303 located between the bushing 302 and the shoulder 3012.

[0074] However, in addition to indirectly fixing the bushing 302 between the pivot 301 and the frame 2 by using the inner ring of the bearing 303, it is also possible to make the end of the bushing 302 near the shoulder 3012 also contact the shoulder 3012, and then use the connected nut 304 to directly fix the bushing 302 between the pivot 301 and the frame 2.

[0075] In this embodiment, in some exemplary implementations, the following are still combined Figures 6 to 8As shown, viewed from the outer peripheral wall of the pivot 301, the pivot 301 also has a first shaft segment 301a and a second shaft segment 301b connected together. The first shaft segment 301a is near the end of the pivot 301 that extends into the rear rocker arm 1, that is, near the shoulder 3012. The second shaft segment 301b is near the end of the pivot 301 that is connected to the nut 304, that is, near the third shaft segment 301c on the pivot 301 that is formed with external threads. The third shaft segment 301c is specifically used for screwing into the nut 304.

[0076] Meanwhile, a bearing mounting groove 3021 is provided on the outer peripheral wall of the bushing 302 for mounting the bearing 303. The inner hole 3022 of the bushing 302 also has a connected first hole section 3022a and a second hole section 3022b, and when the bushing 302 is fitted onto the pivot 301, the bushing 302 is fitted onto the pivot 301 from the side of the second hole section 3022b.

[0077] Based on the design of the first shaft segment 301a and the second shaft segment 301b on the pivot 301, and the first hole segment 3022a and the second hole segment 3022b in the bushing 302, this embodiment also makes the first hole segment 3022a and the first shaft segment 301a and the second shaft segment 301b, as well as the second hole segment 3022b and the first shaft segment 301a, have clearance fits, while the second hole segment 3022b and the second shaft segment 301b have interference fits.

[0078] At this point, continue as follows Figure 9 As shown, the first shaft segment 301a and the second shaft segment 301b on the pivot 301 are also... Figure 9 The positions indicated by labels m and n in the figure are the first hole segment 3022a and the second hole segment 3022b inside bushing 302. Figure 9 The positions indicated by the labels e and g.

[0079] Obviously, by making the first hole segment 3022a in the inner hole 3022 of the bushing 302 with the first shaft segment 301a and the second shaft segment 301b on the pivot 301, and the second hole segment 3022b in the inner hole 3022 of the bushing 302 with the first shaft segment 301a on the pivot 301 with an interference fit, while the second hole segment 3022b in the inner hole 3022 of the bushing 302 with the second shaft segment 301b on the pivot 301 with an interference fit, the bushing 302 can slide freely along the pivot 301 after being fitted onto the pivot 301 by press fitting. And due to the existence of the interference fit, even if the bushing 302 slides toward the end of the pivot 301 with the third shaft segment 301c, it will not fall off the pivot 301.

[0080] Therefore, it not only facilitates the assembly between bushing 302 and pivot 301, and prevents pivot 301, bushing 302 and bearing 303 from falling apart after assembly, but also enables axial free sliding of pivot 301 during the installation of rear rocker arm 1, which helps to improve the convenience of installation operation of left mounting structure 3.

[0081] It is worth noting that, in specific implementation, the clearance fit and interference fit that can be formed by the first shaft segment 301a and the second shaft segment 301b on the aforementioned pivot 301, and the first hole segment 3022a and the second hole segment 3022b in the inner hole 3022 of the bushing 302, can be achieved by controlling the outer diameter of the pivot 301 at different positions, or the inner diameter of the bushing 302 at different positions.

[0082] In addition, besides having different shaft segments from the outside, see also... Figure 9 As shown, in this embodiment, the central hole 3011 in the pivot 301 also has a tightening hole section 3011a, a threaded hole section 3011b and a through hole section 3011c arranged in sequence.

[0083] The tightening hole section 3011a has a regular polygonal cross-section (such as a regular hexagon) and can be used to engage with a tool (such as an Allen wrench) inserted therein to prevent the pivot 301 from rotating when tightening the nut 304. The threaded hole section 3011b is used for bolt 305 connection to achieve the connection of the bolt 305 within the pivot 301. The through hole section 3011c is a hole structure that passes through the pivot 301, forming a central hole 3011 together with the tightening hole section 3011a and the threaded hole section 3011b, thus achieving a hollow configuration for the pivot 301.

[0084] In this embodiment, given that a nut 304 and a bolt 305 are connected to one end of the pivot 301 that extends outside the first mounting hole 201, in some exemplary embodiments, as a preferred design, for example, the screwing direction between the nut 304 and the pivot 301 may be opposite to the screwing direction between the bolt 305 and the pivot 301.

[0085] At this time, by making the screwing direction between the nut 304 and the pivot 301 opposite to the screwing direction between the bolt 305 and the pivot 301, when the bolt 305 is assembled, the rotation trend of the bolt 305 driving the pivot 301 is to tighten with the nut 304. In this way, when assembling the bolt 305, it is not necessary to use a separate tool to clamp and fix the pivot 301, which facilitates the assembly operation of the bolt 305.

[0086] At the same time, by utilizing the screwing direction between nut 304 and pivot 301, which is opposite to the screwing direction between bolt 305 and pivot 301, when nut 304 shows a tendency to loosen, it can also utilize the fact that bolt 305 is in a tightening tendency at this time to effectively prevent nut 304 from loosening, thereby ensuring the reliability of the connection of pivot 301 on frame 2.

[0087] In specific implementation, the external thread at the third shaft segment 301c on the pivot 301 can be, for example, a forward thread, to be screwed into the nut 304, while the thread on the bolt 305 can be, for example, a reverse thread, and mate with the threaded hole segment 3011b inside the pivot 301 to achieve the connection of the bolt 305 inside the pivot 301.

[0088] In this embodiment, in some exemplary implementations, the bearing 303 in the left mounting structure 3 may be a deep groove ball bearing, for example. This allows the bearing 303 to be a deep groove ball bearing, which not only has a simple structure, is easy to use, has a long service life, and excellent high-speed performance, but also utilizes the characteristic of deep groove ball bearings to withstand combined radial and axial loads, improving the adaptability of the bearing 303 to the swing of the rear rocker arm 1 and enhancing the stability of the rear rocker arm 1 mounted on the frame 2.

[0089] Furthermore, in some of the exemplary implementations, it is still as follows Figure 6 As shown, in some exemplary embodiments of this embodiment, a retaining ring 306 is also provided on the outer side of the bearing 303, that is, on the side of the bearing 303 facing the fork arm 2a, and the retaining ring 306 is snapped onto the rear rocker arm 1.

[0090] Specifically, the retaining ring 306 is fitted into a groove on the inner wall of the inner cavity 1c. After the retaining ring 306 is fitted into the groove on the rear rocker arm 1, it can abut against the outer ring of the bearing 303, thereby enabling it to cooperate with the rear rocker arm 1 to achieve the positioning arrangement of the bearing 303 within the rear rocker arm 1.

[0091] In this embodiment, while a retaining ring 306 is provided, in some exemplary embodiments, a sealing ring 307 is also provided on the outside of the retaining ring 306, and the sealing ring 307 is located between the rear rocker arm 1 and the bushing 302.

[0092] The aforementioned sealing ring 307 can generally be an existing product with an internally embedded skeleton and a sealing lip at the position where it abuts against the bushing 302.

[0093] Furthermore, it is understandable that by setting a retaining ring 306 on the outside of the bearing 303 and mounting it on the rear rocker arm 1, it can cooperate with the rear rocker arm 1 to limit and prevent the bearing 303 from falling off, thus ensuring the stability of the connection between the bearing 303 and the rear rocker arm 1.

[0094] By providing a sealing ring 307 on the outside of the bearing 303 between the rear rocker arm 1 and the bushing 302, the bearing 303 can be waterproofed and dustproofed, ensuring its smooth and reliable operation and helping to extend its service life.

[0095] In this embodiment, it is worth noting that, in addition to the left-side mounting structure 3, the right-side mounting structure 4, in some implementations, may also adopt the same structural form as the left-side mounting structure 3. However, apart from being the same as the left-side mounting structure 3, in specific implementations, it continues as follows... Figure 10 As shown, in other embodiments, for example, the right-side mounting structure 4 may also include a mounting shaft 401 and a cylindrical roller bearing 402.

[0096] The mounting shaft 401 is connected to the mounting hole 201 on the same side fork arm 2a, and one end of the mounting shaft 401 extends into the inner cavity 1c of the rear rocker arm 1. The cylindrical roller bearing 402 is disposed between the mounting shaft 401 and the rear rocker arm 1. Preferably, the cylindrical roller bearing 402 can also be designed to slide axially relative to the mounting shaft 401.

[0097] In practice, the aforementioned 401 after installation can generally be connected to the mounting hole 201 on the same side fork arm 2a by screwing. Of course, the aforementioned cylindrical roller bearing 402 can also be other types of bearing products.

[0098] Alternatively, in a specific implementation, a sealing structure 403 can be provided on the outer side of the cylindrical needle roller bearing 402, that is, on the side of the cylindrical needle roller bearing 402 facing the same side fork arm 2a. This sealing structure 403 is located between the rear rocker arm 1 and the mounting shaft 401, and this sealing structure 403 also uses an existing sealing ring product with an internally embedded skeleton and a sealing lip at the position abutting against the mounting shaft 402.

[0099] It is worth noting that, regarding the installation structure of this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still based on... Figures 1 to 9 As shown, it may include, for example, a pivot 301, as well as a bushing 302, a bearing 303, and a nut 304.

[0100] The pivot 301 is mounted on the frame 2, and the bushing 302 is fitted onto the end of the pivot 301 that extends into the rear rocker arm 1. The bearing 303 is located between the bushing 302 and the rear rocker arm 1. The nut 304 is connected to the other end of the pivot 301, and the nut 304 also fixes the bushing 302 between the shoulder 3012 on the pivot 301 and the fork arm 2a in the frame 2.

[0101] A bolt 305 is also connected to the same end of the pivot 301 where the nut 304 is attached, and the bolt 305 locks the nut 304 to the end of the pivot 301. A central hole 3011 is provided axially through the pivot 301, and the bolt 305 is connected to the central hole 3011. The screwing direction between the nut 304 and the pivot 301 is opposite to the screwing direction between the bolt 305 and the pivot 301.

[0102] In addition, bearing 303 is a deep groove ball bearing, and a retaining ring 306 is provided on the outside of bearing 303, and a sealing ring 307 is also provided on the outside of retaining ring 306.

[0103] In the preferred embodiment of the above installation structure, the specific configuration and arrangement of the pivot 301, bushing 302, bearing 303, nut 304 and bolt 305 can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the pivot 301, bushing 302, bearing 303, nut 304 and bolt 305 can also be referred to the descriptions in the above exemplary embodiments.

[0104] Furthermore, in this embodiment, as an exemplary operation, the bearing 303 is first press-fitted into the bearing mounting groove 3021 on the bushing 302 from one end of the bushing 302. When the bushing 302 of the press-fitted bearing 303 is fitted onto the pivot 301 from one end of the third shaft segment 301c, the bushing 302 can be fitted onto the pivot 301 by means of an interference fit between the inner hole 3022 of the bushing 302 and the outer peripheral wall of the pivot 301, thanks to the press-fitting device. After the bushing 302 is fitted onto the pivot 301, there is no need to worry about it slipping off the pivot 301.

[0105] After the bushing 302 is fitted onto the pivot 301, the pivot 301, with the bushing 302 and bearing 303 attached, can be placed at the end of the inner cavity 1c of the rear rocker arm 1. A pressing force is applied to the outer ring of the bearing 303 using a pressing tool, pressing the bearing 303, which is assembled with the bushing 302 and pivot 301, into the left end of the inner cavity 1c of the rear rocker arm 1. Next, the retaining ring 306 can be installed into the retaining groove in the rear rocker arm 1 using snap ring pliers, and then the sealing ring 307 can be pressed between the rear rocker arm 1 and the bushing 302.

[0106] Then, using a tool that can pass through the center hole 3011 on the pivot 301, with one end of the tool inserted into the center hole 3011 and secured to the end of the pivot 301, the nut 304 is first fitted onto the tool. Then, the tool is inserted into the center hole 3011 and extends to the end of the pivot 301 located inside the rear rocker arm 1. After one end of the tool is secured to the end of the pivot 301, the tool pulls the pivot 301, causing one end of the pivot 301 to slide through the mounting hole 201, thus achieving the mounting arrangement of the pivot 301 on the frame 2.

[0107] After the tooling allows one end of the pivot 301 to slide through the mounting hole 201, the nut 303 can be connected to the pivot 301 by tightening the nut 303. Then, the tooling can be removed. After removing the tooling, to tighten the nut 303 on the pivot 301, for example, an Allen wrench or socket wrench can be used to tighten the nut 304 and the pivot 301. After tightening the nut 304, the bolt 305 is connected into the center hole 3011 in the pivot 301. The bolt 305 and the nut 304 have opposite threads. After tightening the bolt 305, the bolt 305 locks the nut 304 at the end of the pivot 301, thus completing the installation of one end of the rocker arm 1 on the frame 2.

[0108] The mounting structure of this embodiment adopts the above design. On the one hand, it can connect the pivot 301 with bushing 302 to the frame 2 and use the bearing 303 to support the rotation of the rear swingarm 1, so as to realize the rotational installation of the rear swingarm 1 on the frame 2. On the other hand, it can also achieve the left and right disconnection design of the pivot 301 for connecting the rear swingarm 1 and the frame 2 by having only one end of the pivot 301 extend into the rear swingarm 1. This can avoid the inconvenience caused by using a whole pivot for the arrangement of the drive shaft in the motorcycle type vehicle, and help the arrangement of the drive shaft in the motorcycle type vehicle, thus having good practicality.

[0109] An embodiment of the second aspect of this application provides a vehicle, which is a straddle-type vehicle, and is equipped with a rear swingarm and the mounting structure described in the first aspect embodiment above.

[0110] It is worth noting that, in the vehicle of this embodiment, as an example, one end of the rear rocker arm 1 can be installed using the mounting structure described above, namely the left mounting structure 3, while the other end of the rear rocker arm can be installed using the right mounting structure 4 described above.

[0111] However, in addition to using both the left mounting structure 3 and the right mounting structure 4 to install the rear rocker arm 3 in the frame 2, it is also possible to use the mounting structures described in the first aspect embodiment for both ends of the rear rocker arm 3 in other embodiments.

[0112] The vehicle in this embodiment adopts the mounting structure described above, which enables the rear swingarm 1 to be rotatably mounted on the frame 2 in a straddle-type vehicle. At the same time, it also enables the pivot for connecting the rear swingarm 1 to the frame 2 to be designed with left and right breaks. This avoids the inconvenience caused by using a whole pivot for the arrangement of the drive shaft in a straddle-type vehicle, and facilitates the arrangement of the drive shaft in a straddle-type vehicle, thus having good practicality.

[0113] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the protection scope of the claims of this application.

Claims

1. A mounting structure suitable for mounting a rear swingarm (1) in a frame (2) of a motorcycle, characterized in that: Includes a pivot (301), a bushing (302), a bearing (303), and a nut (304); The pivot (301) passes through the frame (2), the bushing (302) is sleeved on one end of the pivot (301) that extends into the rear rocker arm (1), and the bearing (303) is located between the bushing (302) and the rear rocker arm (1). The nut (304) is connected to the other end of the pivot (301) and fixes the bushing (302) between the pivot (301) and the frame (2).

2. The installation structure according to claim 1, characterized in that: It also includes bolts (305); The bolt (305) is connected to the pivot (301) and is located at the same end of the pivot (301) as the nut (304), and the bolt (305) locks the nut (304) at the end of the pivot (301).

3. The installation structure according to claim 2, characterized in that: The pivot (301) has an axially through central hole (3011), and the bolt (305) is connected to the central hole (3011).

4. The installation structure according to claim 3, characterized in that: The screwing direction between the nut (304) and the pivot (301) is opposite to the screwing direction between the bolt (305) and the pivot (301).

5. The installation structure according to claim 1, characterized in that: The pivot (301) extends into the rear rocker arm (1) and has a shoulder (3012) at one end. The nut (304) fixes the bushing (302) between the shoulder (3012) and the frame (2).

6. The installation structure according to claim 5, characterized in that: The pivot (301) has a first shaft segment (301a) and a second shaft segment (301b) connected together. The first shaft segment (301a) is near the end of the pivot (301) that extends into the rear rocker arm (1), and the second shaft segment (301b) is near the end of the pivot (301) that is connected to the nut (304). The bushing (302) has an inner hole (3022) with a connected first hole section (3022a) and a second hole section (3022b), and the bushing (302) is fitted onto the pivot (301) through the second hole section (3022b); The first hole segment (3022a) is clearance-fitted with the first shaft segment (301a) and the second shaft segment (301b), and the second hole segment (3022b) is clearance-fitted with the first shaft segment (301a). The second hole segment (3022b) is interference-fitted with the second shaft segment (301b).

7. The installation structure according to claim 1, characterized in that: The bearing (303) is a deep groove ball bearing.

8. The mounting structure according to any one of claims 1 to 7, characterized in that: The bearing (303) is provided with a retaining ring (306) on its outer side, and the retaining ring (306) is fitted onto the rear rocker arm (1).

9. The installation structure according to claim 8, characterized in that: A sealing ring (307) is provided on the outer side of the retaining ring (306), and the sealing ring (307) is located between the rear rocker arm (1) and the bushing (302).

10. A vehicle, said vehicle being a straddle-type vehicle, characterized in that: The vehicle is provided with a rear rocker arm (1) and the mounting structure according to any one of claims 1 to 9.

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