Rear fork, frame and scooter

Abstract

The utility model discloses a rear fork, frame and scooter, rear fork includes left fork body and right fork body, and left fork body and right fork body include rear fork board, reinforcing part and axle sleeve, and reinforcing part links to rear fork board, and axle sleeve connects rear fork board and reinforcing part. The rear fork provided by the utility model has the advantages of high connecting strength of axle sleeve and rear fork board, and high positioning reliability of rear fork board and reinforcing part to axle sleeve.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, specifically to a rear swingarm, a frame, and a mobility scooter. Background Technology

[0002] In related technologies, the rear swingarm of an electric vehicle is usually composed of a left fork and a right fork. The left fork and the right fork are generally tubular parts, or a combination of sheet metal parts and bushings. When the rigidity of the sheet metal parts is worse than that of the tubular parts, and there is a difference in the connection strength between the sheet metal parts and the bushings, the positioning reliability of the sheet metal parts to the bushings is low. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a rear swingarm, which has the advantages of high connection strength between the bushing and the rear fork plate, and high positioning reliability of the rear fork plate and the reinforcing member on the bushing.

[0005] An embodiment of this utility model also proposes a frame and a mobility scooter.

[0006] The rear swingarm of this utility model embodiment includes a left fork body and a right fork body. The left fork body and the right fork body include a rear fork plate, a reinforcing member and a bushing. The reinforcing member is connected to the rear fork plate. The bushing connects the rear fork plate and the reinforcing member.

[0007] According to an embodiment of the present invention, in addition to connecting the bushing to the rear fork plate, each of the bushing and the rear fork plate is further connected to a reinforcing member. The addition of the reinforcing member further improves the connection strength between the bushing and the rear fork plate, making the bushing less prone to deformation relative to the rear fork plate. Furthermore, a mounting position for mates with the bushing can be provided on the reinforcing member. This allows for the bushing to be positioned by mates with the mounting position on the reinforcing member, thereby effectively ensuring the reliable positioning of the bushing after the rear fork is assembled.

[0008] In some embodiments, the rear fork plate is provided with a first mounting hole, the reinforcing member is provided with a second mounting hole, and the bushing is disposed in the first mounting hole and the second mounting hole.

[0009] In some embodiments, the reinforcing member includes a base plate and a connecting plate disposed on the side of the base plate facing the rear fork plate, the connecting plate being connected to the rear fork plate, the base plate and the rear fork plate being arranged at intervals along the left-right direction of the rear flat fork, and the second mounting hole being disposed on the base plate.

[0010] In some embodiments, the bushing includes a first segment, a second segment, and a third segment connected sequentially along its axial direction. The outer diameter of the first segment is smaller than the outer diameter of the second segment, and the outer diameter of the third segment is smaller than the outer diameter of the second segment. The first segment is disposed in the first mounting hole, the second segment is sandwiched between the rear fork plate and the base plate, and the third segment is disposed in the second mounting hole.

[0011] In some embodiments, the connecting plate is arranged around the second mounting hole and includes an upper and a lower surround plate arranged in the vertical direction of the rear fork, both the upper and lower surround plates being provided with drainage holes.

[0012] In some embodiments, the diameter of the second mounting hole gradually increases in the direction away from the rear fork plate.

[0013] In some embodiments, the rear fork plate, the reinforcing member, and the bushing are welded together in pairs.

[0014] The frame according to an embodiment of the present invention includes a frame body and a rear flat fork as described in any of the above embodiments, wherein the rear fork plate and the reinforcing member are both connected to the frame body.

[0015] The technical advantages of the frame according to this utility model embodiment are the same as the technical advantages of the rear horizontal fork in the above embodiment, and will not be repeated here.

[0016] In some embodiments, the frame includes two rear inclined tubes spaced apart along the left and right directions of the frame, and the reinforcing member in the left fork and the reinforcing member in the right fork are respectively welded to the two rear inclined tubes;

[0017] The outer surface of the reinforcing member includes an arc surface that matches the outer surface of the rear inclined tube, and the arc surface is in close contact with the outer surface of the rear inclined tube.

[0018] The mobility scooter according to an embodiment of the present invention includes a frame as described in the above embodiment.

[0019] The technical advantages of the mobility scooter according to this utility model embodiment are the same as the technical advantages of the frame in the above embodiment, and will not be repeated here. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the vehicle frame according to an embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the rear flat fork according to an embodiment of the present utility model.

[0022] Figure 3 This is a cross-sectional view of the rear flat fork at the bushing according to an embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram of the rear fork plate in the rear flat fork according to an embodiment of the present utility model.

[0024] Figure 5 This is a schematic diagram of the reinforcing member in the rear horizontal fork according to an embodiment of the present utility model.

[0025] Figure 6 This is a schematic diagram of the rear horizontal fork center axle sleeve according to an embodiment of the present utility model.

[0026] Figure label:

[0027] 1. Left fork body; 11. Rear fork plate; 111. First mounting hole; 12. Reinforcing member; 121. Base plate; 1211. Second mounting hole; 122. Connecting plate; 1221. Upper circumference plate; 1222. Lower circumference plate; 1223. Drain hole; 1224. Arc surface; 13. Bushing; 131. First section; 132. Second section; 133. Third section; 2. Right fork body; 3. Frame body; 31. Rear diagonal tube. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following is combined Figures 1-6 Description of the rear flat fork according to an embodiment of the present utility model.

[0030] The rear swingarm of this utility model embodiment includes a left fork body 1 and a right fork body 2. The left fork body 1 and the right fork body 2 include a rear fork plate 11, a reinforcing member 12, and a bushing 13. The reinforcing member 12 is connected to the rear fork plate 11. The bushing 13 connects the rear fork plate 11 and the reinforcing member 12.

[0031] According to the rear swingarm of this utility model embodiment, in addition to connecting the bushing 13 to the rear fork plate 11, each of the bushing 13 and the rear fork plate 11 is further connected to the reinforcing member 12. In this case, the reinforcing member 12 further improves the connection strength between the bushing 13 and the rear fork plate 11, making the bushing 13 less prone to deformation relative to the rear fork plate 11. Furthermore, a mounting position for mates with the bushing 13 can be provided on the reinforcing member 12. This allows for the positioning of the bushing 13 through the mating of the bushing 13 with the mounting position on the reinforcing member 12, thereby effectively ensuring the positioning reliability of the bushing 13 after the rear swingarm assembly.

[0032] It should be noted that both the left fork body 1 and the right fork body 2 of the rear swingarm are connected to the frame body 3 of the vehicle frame via the rear fork plate 11. The reinforcing member 12 can also be connected to the frame body 3 of the vehicle frame to further improve the connection strength between the left fork body 1 and the right fork body 2 of the rear swingarm and the frame body 3, making the rear fork body less prone to deformation under pressure.

[0033] In some embodiments, the rear fork plate 11 is provided with a first mounting hole 111, the reinforcing member 12 is provided with a second mounting hole 1211, and the bushing 13 is disposed in the first mounting hole 111 and the second mounting hole 1211.

[0034] After the reinforcing member 12 is connected to the rear fork plate 11, the bushing 13 is inserted into each of the first mounting hole 111 and the second mounting hole 1211, which further ensures the positional reliability of the bushing 13 relative to the rear fork plate 11 and the reinforcing member 12, and the positioning reliability of the bushing 13 by the rear fork plate 11 and the reinforcing member 12 is higher.

[0035] For example, such as Figure 3 As shown, after the reinforcing member 12 is connected to the rear fork plate 11, the first mounting hole 111 and the second mounting hole 1211 are coaxial. During the assembly of the left fork body 1 and the right fork body 2, the bushing 13 can be fitted into one of the first mounting hole 111 and the second mounting hole 1211 to be welded to one of the rear fork plate 11 and the reinforcing member 12. Then, the bushing 13 is fitted into the other of the first mounting hole 111 and the second mounting hole 1211 to facilitate the welding of the bushing 13 to the other of the rear fork plate 11 and the reinforcing member 12. The assembly efficiency of the left fork body 1 and the right fork body 2 is higher.

[0036] In some embodiments, the reinforcing member 12 includes a base plate 121 and a connecting plate 122 disposed on the side of the base plate 121 facing the rear fork plate 11. The connecting plate 122 is connected to the rear fork plate 11. The base plate 121 and the rear fork plate 11 are arranged at intervals along the left and right directions of the rear flat fork. A second mounting hole 1211 is disposed on the base plate 121.

[0037] At this point, the base plate 121, connecting plate 122, and rear fork plate 11 together define a cavity, that is, the base plate 121, connecting plate 122, and part of the rear fork plate 11 form a box-like structure. This makes the left fork body 1 and right fork body 2 stronger at the bushing 13, and able to withstand greater impacts without deformation. Moreover, this arrangement also allows the bushing 13 to be mostly hidden between the base plate 121 and the rear fork plate 11, effectively reducing the probability of the bushing 13 being subjected to external impacts. The bushing 13 has a better positioning effect relative to the rear fork plate 11 and the reinforcing member 12.

[0038] For example, the first end of the bushing 13 is inserted into the first mounting hole and welded to the edge of the first mounting hole located inside the rear fork plate 11, and the first end of the bushing 13 is inserted into the second mounting hole and welded to the edge of the second mounting hole located outside the reinforcement 12.

[0039] In some embodiments, the bushing 13 includes a first segment 131, a second segment 132, and a third segment 133 connected sequentially along its axial direction. The outer diameter of the first segment 131 is smaller than the outer diameter of the second segment 132, and the outer diameter of the third segment 133 is smaller than the outer diameter of the second segment 132. The first segment 131 is disposed in the first mounting hole 111, the second segment 132 is sandwiched between the rear fork plate 11 and the base plate 121, and the third segment 133 is disposed in the second mounting hole 1211.

[0040] At this time, the first segment 131 is inserted into the first mounting hole 111, the third segment 133 is inserted into the second mounting hole 1211, and the second segment 132 is sandwiched between the base plate 121 and the rear fork plate 11, thereby fixing the position of the bushing 13 relative to the base plate 121 and the rear fork plate 11. This facilitates the welding of the bushing 13 with the reinforcing member 12 and the rear fork plate 11. While the assembly efficiency of the bushing 13 is high, it also ensures the axial positioning of the bushing 13 relative to the rear fork plate 11 and the reinforcing member 12, avoiding the impact on the assembly process with the rear wheel assembly due to excessive axial error.

[0041] For example, such as Figure 3 and Figure 6 As shown, the axial length of the second segment 132 is equal to the distance between the base plate 121 and the rear fork plate 11, the axial length of the first segment 131 is less than the axial length of the third segment 133, and the axial length of the third segment 133 is equal to the thickness of the base plate 121.

[0042] It should be noted that the bushing 13 can also be a hollow cylindrical structure with the same outer diameter at any position.

[0043] In some embodiments, the connecting plate 122 is arranged around the second mounting hole 1211 and includes an upper circumference plate 1221 and a lower circumference plate 1222 arranged in the vertical direction of the rear fork, and both the upper circumference plate 1221 and the lower circumference plate 1222 are provided with drainage holes 1223.

[0044] The drainage holes 1223 on the lower shroud 1222 facilitate the outflow of water that enters the cavity defined by the base plate 121 and the rear fork plate 11, ensuring the dryness of the space and effectively preventing corrosion of the left fork 1 and right fork 2, thus reducing their service life. The drainage holes 1223 on the upper shroud 1221 facilitate the evaporation and dissipation of water that cannot flow out through the drainage holes 1223 on the lower shroud 1222, further ensuring the dryness of the cavity defined by the base plate 121 and the rear fork plate 11.

[0045] For example, such as Figure 5As shown, both the upper surrounding plate 1221 and the lower surrounding plate 1222 are disposed on the edge of the substrate 121. Both the upper surrounding plate 1221 and the lower surrounding plate 1222 are welded to the substrate 121, or the upper surrounding plate 1221, the lower surrounding plate 1222, and the substrate 121 are integrally stamped. Both the upper surrounding plate 1221 and the lower surrounding plate 1222 are perpendicular to the substrate 121. Furthermore, one end of the upper surrounding plate 1221 is connected to one end of the lower surrounding plate 1222 by an arc transition, and the other end of the upper surrounding plate 1221 is spaced apart from the other end of the lower surrounding plate 1222. A drainage hole 1223 is disposed at the end of the upper surrounding plate 1221 and the lower surrounding plate 1222 that faces away from the substrate 121.

[0046] In some embodiments, the diameter of the second mounting hole 1211 gradually increases in the direction away from the rear fork plate 11.

[0047] Therefore, after the third segment 133 of the bushing 13 is inserted into the second mounting hole 1211, an annular recess can be formed on the outer peripheral surface of the third segment 133 and the inner wall surface of the second mounting hole 1211. The annular recess is located on the outer side of the substrate 121, which facilitates the welding of the third segment 133 to the substrate 121. At the same time, the weld formed by welding fills the annular recess, effectively improving the appearance of the left fork body 1 and the right fork body 2 at this point.

[0048] For example, the inner side of the substrate 121 may extend toward the rear fork plate 11 to form a tapered structure with gradually decreasing inner and outer diameters, and the tapered structure forms a second mounting hole 1211.

[0049] In some embodiments, the rear fork plate 11, the reinforcing member 12, and the bushing 13 are welded together in pairs. This effectively improves the connection strength between the rear fork plate 11, the reinforcing member 12, and the bushing 13, and each component does not require additional connection structures, effectively reducing the design difficulty of the three components, and lowering their manufacturing and assembly costs.

[0050] The frame according to the present utility model includes a frame body 3 and a rear flat fork as described in any of the above embodiments, wherein the rear fork plate 11 and the reinforcing member 12 are both connected to the frame body 3.

[0051] The technical advantages of the frame according to this utility model embodiment are the same as the technical advantages of the rear horizontal fork in the above embodiment, and will not be repeated here.

[0052] It should be noted that by setting the reinforcing member 12, which is also connected to the frame 3, when the rear fork plate 11 is subjected to external impact, the reinforcing member 12 effectively buffers the bending deformation of the rear fork plate 11 relative to the frame 3, thereby making the connection strength between the left fork plate 1 and the right fork plate 2 and the frame 3 higher, and the positioning reliability of the two on the frame 3 higher.

[0053] In some embodiments, the frame 3 includes two rear inclined tubes 31 spaced apart along the left-right direction of the frame 3. Reinforcing members 12 in the left fork 1 and the right fork 2 are welded to the two rear inclined tubes 31, respectively. The outer surface of the reinforcing member 12 includes an arc surface 1224 that matches the outer surface of the rear inclined tubes 31, and the arc surface 1224 is in close contact with the outer surface of the rear inclined tubes 31. This effectively increases the contact area and welding area between the reinforcing member 12 and the rear inclined tubes 31, resulting in a higher connection strength between the rear inclined tubes 31 and the reinforcing member 12.

[0054] For example, such as Figure 1 and Figure 5 As shown, the arc surface 1224 is respectively disposed on the first and second enclosures of the connecting plate 122, and the reinforcing member 12, the rear fork plate 11 and the rear inclined tube 31 together define a generally closed cavity.

[0055] The mobility scooter according to an embodiment of the present invention includes a frame as described in the above embodiment.

[0056] The technical advantages of the mobility scooter according to this utility model embodiment are the same as the technical advantages of the frame in the above embodiment, and will not be repeated here.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In this utility model, 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 utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A rear flat fork, characterized in that, It includes a left fork (1) and a right fork (2), wherein the left fork (1) and the right fork (2) include: Rear fork plate (11); A reinforcing member (12) is connected to the rear fork plate (11); Bushing (13) connects the rear fork plate (11) and the reinforcing member (12).

2. The rear flat fork according to claim 1, characterized in that, The rear fork plate (11) is provided with a first mounting hole (111), the reinforcing member (12) is provided with a second mounting hole (1211), and the bushing (13) is disposed in the first mounting hole (111) and the second mounting hole (1211).

3. The rear flat fork according to claim 2, characterized in that, The reinforcing member (12) includes a base plate (121) and a connecting plate (122) disposed on the side of the base plate (121) facing the rear fork plate (11). The connecting plate (122) is connected to the rear fork plate (11). The base plate (121) and the rear fork plate (11) are arranged at intervals along the left and right directions of the rear flat fork. The second mounting hole (1211) is disposed on the base plate (121).

4. The rear flat fork according to claim 3, characterized in that, The bushing (13) includes a first segment (131), a second segment (132), and a third segment (133) connected sequentially along its axial direction. The outer diameter of the first segment (131) is smaller than the outer diameter of the second segment (132), and the outer diameter of the third segment (133) is smaller than the outer diameter of the second segment (132). The first segment (131) is disposed in the first mounting hole (111), the second segment (132) is sandwiched between the rear fork plate (11) and the base plate (121), and the third segment (133) is disposed in the second mounting hole (1211).

5. The rear flat fork according to claim 3, characterized in that, The connecting plate (122) is arranged around the second mounting hole (1211) and includes an upper plate (1221) and a lower plate (1222) arranged along the vertical direction of the rear fork. Both the upper plate (1221) and the lower plate (1222) are provided with drainage holes (1223).

6. The rear swingarm according to any one of claims 2-5, characterized in that, The diameter of the second mounting hole (1211) gradually increases in the direction away from the rear fork plate (11).

7. The rear flat fork according to any one of claims 1-5, characterized in that, The rear fork plate (11), the reinforcing member (12), and the bushing (13) are welded together in pairs.

8. A vehicle frame, characterized in that, Includes a frame (3) and a rear flat fork according to any one of claims 1-7, wherein the rear fork plate (11) and the reinforcing member (12) are both connected to the frame (3).

9. The frame according to claim 8, characterized in that, The frame (3) includes two rear inclined tubes (31) spaced apart along the left and right directions of the frame (3), and the reinforcing member (12) in the left fork (1) and the reinforcing member (12) in the right fork (2) are respectively welded to the two rear inclined tubes (31); The outer surface of the reinforcing member (12) includes an arc surface (1224) that matches the outer surface of the rear inclined tube (31), and the arc surface (1224) is in close contact with the outer surface of the rear inclined tube (31).

10. A mobility scooter, characterized in that, Includes the frame as described in claim 8 or 9.

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