A reverse drive mechanism for a shaft-driven two-wheeled vehicle

Abstract

The utility model relates to a motorcycle reverse auxiliary device technical field, concretely is a kind of reverse transmission mechanism for shaft transmission two-wheeled vehicle, including the expansion assembly of being fixedly connected with rear wheel hollow rotating shaft, expansion assembly includes the expansion sleeve that is spliced by multiple expansion sleeve components, first expansion groove, second expansion groove in the both ends of expansion sleeve are respectively equipped with first expansion block, second expansion block, bolt is penetrated both and is rotated with rotating shaft synchronous gear support;Rotating shaft synchronous gear support is fixedly connected with rotating shaft synchronous gear, and the axle fork connecting block that is equipped with bearing is penetrated;The rotating shaft synchronous gear drive module on the outer side of axle fork connecting block is engaged with rotating shaft synchronous gear by motor wheel.The utility model realizes the stable connection with rear wheel hollow rotating shaft by expansion assembly, combines gear transmission and turbine worm motor drive, realizes the convenient reverse of shaft transmission two-wheeled vehicle, and operation is safe, structure is reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of motorcycle reversing assist devices, and in particular to a reversing transmission mechanism for a two-wheeled vehicle with shaft drive. Background Technology

[0002] Existing heavy motorcycles do not have a reverse function, so the rider must manually operate them to reverse in order to complete a U-turn. This requires the rider to first dismount, then stand on one side of the motorcycle and push it backward. Because the motorcycle is heavy, a great deal of force is required for manual operation, and even a slight mistake can easily cause the motorcycle to tip over, resulting in personal injury.

[0003] Existing transmission methods for motorcycles mainly include chain drive and shaft drive. For chain drive, patent CN221794826U discloses a motorcycle reversing drive device, which maintains engagement between a one-way clutch sprocket and the vehicle chain. When the vehicle needs to reverse, the drive motor drives the one-way clutch sprocket to rotate, thereby causing the engaged chain to move in the opposite direction, thus driving the vehicle to reverse.

[0004] However, for motorcycles with shaft drive, the transmission mechanism generally includes a drive shaft. Its front end connects to the output of the gearbox via gears, and its rear end engages with the rear wheel hub via bolts and bevel gears. A hollow rear wheel axle is located at the center of the rear wheel hub to support it, and both ends of the hollow rear wheel axle are supported by the forks. During transmission, the hollow rear wheel axle rotates synchronously with the rear wheel. Because this shaft drive method lacks a chain, it cannot achieve reverse drive using the aforementioned patented technology.

[0005] Therefore, there is an urgent need for a reversing transmission mechanism suitable for shaft-driven two-wheeled vehicles to solve the problem that existing reversing devices cannot make transmission connections. Utility Model Content

[0006] The purpose of this utility model is to overcome the problems of the prior art and provide a reversing transmission mechanism for shaft-driven two-wheeled vehicles, which solves the technical problems that existing shaft-driven two-wheeled vehicles have no reversing function and that existing chain-driven reversing schemes cannot be adapted.

[0007] The above objectives are achieved through the following technical solutions: A reversing transmission mechanism for a two-wheeled vehicle with shaft drive includes a tensioning assembly that can be fixedly connected to a hollow rear wheel shaft, wherein a shaft synchronizing gear support is connected to the tensioning assembly, and the shaft synchronizing gear support is fixedly connected to the shaft synchronizing gear. The expansion assembly includes an expansion sleeve that matches the inner cavity of the hollow rear wheel shaft. The expansion sleeve has a first expansion groove and a second expansion groove at its two ends, which are connected by a bolt through hole. A matching first expansion block is provided in the first expansion groove, and a matching second expansion block is provided in the second expansion groove. One end of the bolt passes through the first expansion block and the bolt through hole and is screwed onto the second expansion block, and then passes through the second expansion block and is screwed onto the shaft synchronous gear support. Tightening the bolts can drive the first and second expansion blocks to move toward each other, causing the expansion sleeve to be pressed outward and tightly fitted against the inner wall of the hollow rear wheel shaft.

[0008] Furthermore, the expansion sleeve is composed of at least two expansion components spliced ​​together. Each expansion component has an expansion opening groove at both ends, and a bolt groove is provided between the two expansion opening grooves. After the expansion components are spliced ​​together, the expansion opening grooves at the same end form the first expansion groove or the second expansion groove, and the bolt grooves constitute the bolt through hole.

[0009] Furthermore, there are three expansion joints.

[0010] Furthermore, the inner wall of each of the expansion opening grooves is provided with a guide rail, and the outer walls of the first expansion block and the second expansion block are provided with guide rail grooves corresponding to the guide rails.

[0011] Furthermore, a first bolt hole is provided at the axial center of the first tensioning block, and a second bolt hole is provided at the axial center of the second tensioning block, wherein the bolt is threadedly connected to the second bolt hole.

[0012] Furthermore, it also includes a fork connecting block, the shaft synchronous gear support passes through the fork connecting block, and the outer side of the fork connecting block is provided with a shaft synchronous gear drive module, the shaft synchronous gear drive module can drive the shaft synchronous gear to rotate so as to drive the hollow shaft of the rear wheel to rotate synchronously.

[0013] Furthermore, the rotating shaft synchronous gear drive module is a worm gear motor. The transmission shaft of the worm gear motor passes through the fork connecting block and is connected to the motor wheel. The motor wheel meshes with the rotating shaft synchronous gear.

[0014] Furthermore, a bearing is provided between the fork connecting block and the shaft synchronous gear support.

[0015] Furthermore, the inner side of the fork connecting block is used to connect with the fork, and the outer side is used to install the shaft synchronous gear drive module.

[0016] Furthermore, the expansion sleeve is made of rubber and has anti-slip texture on its outer surface.

[0017] This utility model provides a reversing transmission mechanism for a shaft-driven two-wheeled vehicle, solving the problem of the lack of reversing function in shaft-driven two-wheeled vehicles. The tensioning component achieves a stable connection with the hollow rear wheel axle, and combined with gear transmission and a self-locking worm gear motor drive, it eliminates the need for manual pushing, making operation safe and convenient, highly adaptable, and providing stable and efficient transmission. Compared with existing technologies, it has the following advantages: 1. Enables reverse function for shaft-driven vehicles: By connecting the tensioning component to the hollow rear wheel shaft, combined with gear transmission and worm gear motor drive, the problem of no reverse function for shaft-driven two-wheeled vehicles is solved. No manual pushing is required, making operation convenient and safe.

[0018] 2. Stable and reliable connection: The tensioning component adopts a multi-piece splicing and tensioning block compression method to be fixed to the hollow shaft of the rear wheel. With the guide rail, the connection is tight and not easy to loosen, ensuring stable transmission.

[0019] 3. Strong structural compatibility: It connects to the fork via a fork connector block, eliminating the need for significant modifications to the original motorcycle structure and making it compatible with various shaft-driven two-wheeled vehicles. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of a reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to the present invention. Figure 2 This is a second-view structural schematic diagram of a reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to the present invention; Figure 3 This is an exploded view of a reversing transmission mechanism for a two-wheeled vehicle with shaft drive, as described in this utility model. Figure 4 This is a cross-sectional view of a reversing transmission mechanism for a two-wheeled vehicle with shaft drive, as described in this utility model. Figure 5 This is a schematic diagram showing the connection between the reversing transmission mechanism for a two-wheeled vehicle with shaft drive and the synchronous gear drive module of the rotating shaft, as described in this utility model. Figure 6 This is a schematic diagram showing the connection between the reversing transmission mechanism for a two-wheeled vehicle with shaft drive and the fork connecting block, as described in this utility model.

[0021] Illustration markings: 1-Tightening assembly, 101-Tightening sleeve, 102-First tightening groove, 103-Second tightening groove, 104-Bolt through hole, 105-First tightening block, 106-Second tightening block, 107-Bolt, 108-Tightening open groove, 109-Bolt recess, 110-First bolt hole, 111-Second bolt hole, 112-Tightening kit, 113-Guide rail, 114-Guide rail groove; 2-Spindle synchronous gear support; 3-Forklift Connector Block; 4-Spindle synchronizing gear; 5- Rear wheel hollow axle; 6-Spindle synchronous gear drive module, 601-Motor wheel. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] like Figures 1-3 As shown, this solution provides a reversing transmission mechanism for a two-wheeled vehicle with shaft drive, including a tensioning assembly 1, a shaft synchronizing gear support 2, and a shaft synchronizing gear 4. The specific structure and connection relationship of each component are as follows: like Figure 4 As shown, the expansion assembly 1 is used to form a fixed connection with the hollow rear wheel axle 5, and includes an expansion sleeve 101 that matches the shape of the inner cavity of the hollow rear wheel axle 5. The expansion sleeve 101 is composed of at least two expansion components 112 spliced ​​together. Each expansion component 112 has an expansion opening groove 108 at both ends, and a bolt groove 109 is provided between the two expansion opening grooves 108. When the expansion components 112 are spliced ​​together, the expansion opening grooves 108 at the same end together form a first expansion groove 102 or a second expansion groove 103, and the bolt grooves 109 form bolt through holes 104 penetrating the expansion sleeve 101.

[0024] A first tightening block 105 is provided in the first tightening groove 102, and a second tightening block 106 is provided in the second tightening groove 103. The first tightening block 105 has a first bolt hole 110 on its shaft, and the second tightening block 106 has a second bolt hole 111 on its shaft. One end of the bolt 107 passes through the first bolt hole 110 and the bolt through hole 104 and is threaded to the second bolt hole 111. The bolt 107 can also pass through the second tightening block 106 and be screwed to the synchronous gear support 2 of the rotating shaft.

[0025] To ensure that the expansion blocks do not rotate during movement and only perform axial translation, guide rails 113 are provided on the inner walls of each expansion opening groove 108. Correspondingly, guide rail grooves 114 that mate with the guide rails 113 are provided on the outer walls of the first expansion block 105 and the second expansion block 106. When the bolt 107 is tightened, the first expansion block 105 and the second expansion block 106 move towards each other along the guide rails 113, pressing the expansion sleeve 112 outward, so that the expansion sleeve 101 fits tightly against the inner wall of the rear wheel hollow shaft 5, thereby achieving the fixed connection between the expansion assembly 1 and the rear wheel hollow shaft 5.

[0026] like Figure 3 As shown, in this embodiment, the expansion sleeve 101 is composed of three expansion components 112. Each expansion component 112 has expansion opening grooves 108 at both ends and a bolt groove 109 in the middle. After splicing, the three expansion opening grooves 108 at one end form a first expansion groove 102, and the three expansion opening grooves 108 at the other end form a second expansion groove 103. The three bolt grooves 109 constitute a bolt through hole 104.

[0027] Place the first expansion block 105 into the first expansion groove 102, and the second expansion block 106 into the second expansion groove 103, so that the guide rail 113 on the inner wall of the expansion opening groove 108 mates with the guide rail groove 114 on the outer wall of the expansion block. Pass the bolt 107 through the first bolt hole 110 and the bolt through hole 104 of the first expansion block 105, and thread it into the second bolt hole 111 of the second expansion block 106.

[0028] like Figure 3 As shown, in this embodiment, the shaft synchronous gear support 2 is a cylindrical metal part, one end of which is screwed to the bolt 107, and the other end is fixed to the shaft synchronous gear 4 by key connection or welding to ensure that the two rotate synchronously.

[0029] like Figure 5 and Figure 6 As shown, this embodiment also includes a fork connecting block 3 as a fixing component and a rotating shaft synchronous gear drive module 6 as a seat drive component.

[0030] The fork connecting block 3 is a block structure with a through hole in its middle for the shaft synchronous gear support 2 to pass through. A bearing is installed in the through hole, allowing the shaft synchronous gear support 2 to rotate freely relative to the fork connecting block 3. The inner side of the fork connecting block 3 is used to connect with the motorcycle fork, and the outer side is used to install the shaft synchronous gear drive module 6.

[0031] The shaft synchronous gear drive module 6 is preferably a worm gear motor, whose drive shaft passes through the fork connecting block 3 and is connected to a motor wheel 601, which meshes with the shaft synchronous gear 4. The worm gear motor has a self-locking function to ensure stable transmission when reversing and prevent accidental rotation.

[0032] Installation and working principle: During installation, first insert the expansion sleeve 101 of the expansion assembly 1 into the inner cavity of the hollow rear wheel shaft 5. Then, place the first expansion block 105 and the second expansion block 106 into the first expansion groove 102 and the second expansion groove 103 respectively, so that the guide rail 113 mates with the guide rail groove 114. Next, pass the bolt 107 through the first bolt hole 110 and the bolt through hole 104 in sequence, and thread it into the second bolt hole 111. Continue to tighten the bolt 107, so that the first expansion block 105 and the second expansion block 106 move towards each other, squeezing the expansion sleeve 101 so that it fits tightly against the inner wall of the hollow rear wheel shaft 5, thus achieving a fixed connection. Next, screw the shaft synchronous gear support 2 to the bolt 107, and fix the shaft synchronous gear 4 to the shaft synchronous gear support 2. Then, mount the fork connecting block 3 on the shaft synchronous gear support 2 through the bearing and fix the fork connecting block 3 to the fork. Finally, install the shaft synchronous gear drive module 6 so that the motor wheel 601 meshes with the shaft synchronous gear 4.

[0033] When reversing is required, the shaft synchronous gear drive module 6 is activated. Its drive shaft drives the motor wheel 601 to rotate, which in turn drives the shaft synchronous gear 4 to rotate. The shaft synchronous gear 4, through the shaft synchronous gear support 2, drives the tensioning assembly 1 to rotate, which in turn drives the rear wheel hollow shaft 5 to rotate synchronously, thus achieving rear wheel reversing. After reversing is completed, the shaft synchronous gear drive module 6 is deactivated. Due to the self-locking function of the worm gear motor, the rear wheel hollow shaft 5 remains stationary, and the vehicle stops reversing.

[0034] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive, characterized in that, Includes a tensioning assembly (1) that can be fixedly connected to the hollow rear wheel shaft (5), the tensioning assembly (1) is connected to a shaft synchronous gear support (2), and the shaft synchronous gear support (2) is fixedly connected to the shaft synchronous gear (4); The expansion assembly (1) includes an expansion sleeve (101) that matches the inner cavity of the hollow rear wheel shaft (5). The expansion sleeve (101) has a first expansion groove (102) and a second expansion groove (103) at both ends. The first expansion groove (102) and the second expansion groove (103) are connected by a bolt through hole (104). The first expansion groove (102) is provided with a matching first expansion block (105), and the second expansion groove (103) is provided with a matching second expansion block (106). One end of the bolt (107) passes through the first expansion block (105) and the bolt through hole (104) and is screwed to the second expansion block (106). It also passes through the second expansion block (106) and is screwed to the shaft synchronous gear support (2). Tightening the bolt (107) can drive the first expansion block (105) and the second expansion block (106) to move towards each other, so that the expansion sleeve (101) is squeezed outward and tightly fitted to the inner wall of the hollow rear wheel shaft (5).

2. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 1, characterized in that, The expansion sleeve (101) is composed of at least two expansion components (112). Each expansion component (112) has an expansion opening groove (108) at both ends, and a bolt groove (109) is provided between the two expansion opening grooves (108). After the expansion components (112) are spliced ​​together, the expansion opening grooves (108) at the same end form the first expansion groove (102) or the second expansion groove (103), and the bolt grooves (109) constitute the bolt through hole (104).

3. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 2, characterized in that, There are 3 of the expansion fittings (112).

4. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 2, characterized in that, Each of the expansion opening grooves (108) has a guide rail (113) on its inner wall, and the first expansion block (105) and the second expansion block (106) have guide rail grooves (114) corresponding to the guide rail (113) on their outer walls.

5. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 1, characterized in that, The first expansion block (105) has a first bolt hole (110) at its axial center position, and the second expansion block (106) has a second bolt hole (111) at its axial center position. The bolt (107) is threadedly connected to the second bolt hole (111).

6. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 1, characterized in that, It also includes a fork connecting block (3), the shaft synchronous gear support (2) passes through the fork connecting block (3), and the outer side of the fork connecting block (3) is provided with a shaft synchronous gear drive module (6). The shaft synchronous gear drive module (6) can drive the shaft synchronous gear (4) to rotate so as to drive the rear wheel hollow shaft (5) to rotate synchronously.

7. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 6, characterized in that, The rotating shaft synchronous gear drive module (6) is a worm gear motor. The transmission shaft of the worm gear motor passes through the fork connecting block (3) and is connected to the motor wheel (601). The motor wheel (601) meshes with the rotating shaft synchronous gear (4).

8. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 6, characterized in that, A bearing is provided between the fork connecting block (3) and the shaft synchronous gear support (2).

9. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 6, characterized in that, The inner side of the fork connecting block (3) is used to connect with the fork, and the outer side is used to install the shaft synchronous gear drive module (6).

10. A reversing transmission mechanism for a two-wheeled vehicle with shaft drive according to claim 1, characterized in that, The expansion sleeve (101) is made of rubber and has anti-slip texture on its outer surface.

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