A motorcycle reversing aid

Abstract

The motorcycle reversing auxiliary device comprises a box body and a gear assembly arranged in the box body, the gear assembly comprises two oppositely fixed inner plate bodies, an input gear, an intermediate gear and an output gear rotatably arranged between the two inner plate bodies, the output gear is coaxially and fixedly connected with an output shaft, the output shaft is coaxially and fixedly connected with a chain wheel, the two inner plate bodies are each provided with a first sliding groove, the intermediate gear can slide along the first sliding groove, the intermediate gear is always engaged with the input gear, the input gear drives the intermediate gear to slide and make the intermediate gear engaged with the output gear when the motor works, the two inner plate bodies are provided with a safety device for blocking the intermediate gear from sliding to the output gear when the motor is in a non-working state, the safety device can be separated from the blocking of the intermediate gear when the motor works, the intermediate gear can be blocked from sliding to the output gear when the motor is in the non-working state, the action of the chain is avoided from being limited by the motor, and the intermediate gear and the output gear are not engaged due to vibration.

Description

Technical Field

[0001] This invention belongs to the field of motorcycle technology and relates to a motorcycle reversing assistance device. 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] To this end, Chinese Patent No. CN221794826U discloses a motorcycle reversing drive device, including a housing with a gear mounting cavity, in which a gear assembly is movably mounted. The gear assembly includes a left gear and a right gear arranged on the left and right sides, and a middle gear located at the top. Symmetrical middle gear grooves are provided on the inner wall of the gear mounting cavity, and the middle gear can slide along the middle gear grooves to achieve engagement and disengagement with the left gear and the right gear. A sprocket shaft through hole is provided on the housing for the sprocket shaft to pass through, and one end of the sprocket shaft is perpendicularly connected to the axis of the right gear. A one-way clutch sprocket is sleeved on the outer end of the sprocket shaft, and the one-way clutch sprocket can engage with the vehicle chain.

[0004] In the above structure, the sprocket shaft is fixed relative to the housing, and the vertical height of the sprocket shaft cannot be changed, making it unable to adapt to chains of different heights and thus unable to adapt to different motorcycle models, resulting in a limited range of applications. Furthermore, the lack of a limiting mechanism for the intermediate gear means that when the motorcycle is traveling on bumpy roads, the bouncing intermediate gear will mesh with the left and right gears. At this time, the rotation of the sprocket shaft is limited by the motor and reducer, causing the chain to be unable to rotate normally, thus affecting the normal operation of the motorcycle. After the intermediate gear meshes with the right gear, due to the meshing relationship, the intermediate gear will not disengage from the right gear, causing the intermediate gear to malfunction. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a motorcycle reversing assistance device that does not obstruct the chain movement during normal motorcycle driving.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A motorcycle reversing assist device includes a housing and a gear assembly disposed within the housing. The gear assembly includes two relatively fixed inner plates, an input gear, an intermediate gear, and an output gear rotatably disposed between the two inner plates. An output shaft is coaxially fixed to the output gear, and a sprocket that meshes with a chain is coaxially fixed to the output shaft. The input gear is driven by a motor disposed on the housing. Each of the two inner plates is provided with a first sliding groove, which is arranged opposite to each other. The intermediate gear can slide along the first sliding groove and is always meshed with the input gear. When the motor is working, the input gear drives the intermediate gear to slide and mesh with the output gear. A safety device is provided between the two inner plates to prevent the intermediate gear from sliding towards the output gear when the motor is not working. The safety device can disengage from obstructing the intermediate gear when the motor is working.

[0008] Because of the safety device, the intermediate gear is prevented from sliding towards the output gear when the motor is not in operation, thus preventing the chain movement from being restricted by the motor and avoiding the intermediate gear from meshing with the output gear due to vibration. The safety device disengages from the intermediate gear before the motor starts operating, thereby ensuring that the rotation of the input gear can be smoothly transmitted to the sprocket.

[0009] In the above-mentioned motorcycle reversing assist device, the first slide extends in an arc around the rotation centerline of the input gear, the intermediate gear located at the lower end of the first slide meshes only with the input gear, and the intermediate gear located at the upper end of the first slide meshes with both the input gear and the output gear.

[0010] The first sliding groove, which extends in an arc shape, ensures that the intermediate gear is always engaged with the input gear. When the input gear rotates, it can drive the intermediate gear to move upward along the first sliding groove, and eventually make the intermediate gear engage with the output gear, transmitting the rotational motion of the input gear to the sprocket.

[0011] In the above-mentioned motorcycle reversing assist device, the safety component is an electromagnet located above the intermediate gear. The electromagnet has a core rod that can extend when the power is off and retract when the power is on. When the electromagnet is de-energized, the lower end of the core rod abuts against the intermediate gear located at the lower end of the first slide groove.

[0012] When the electromagnet is energized, it generates a magnetic field that attracts the core rod to retract back into the electromagnet; when the electromagnet is de-energized, the magnetic field disappears, and a spring inside the electromagnet pushes the core rod downwards. When the motor is not in operation, the core rod prevents the intermediate gear from approaching the output gear.

[0013] In the aforementioned motorcycle reversing assist device, a rotating body, consisting of two inner plates, an input gear, an intermediate gear, an output gear, and a safety device, is rotatably mounted within a housing. Its rotational centerline is the central axis of the input gear. The housing has a second sliding groove extending arcuately around the central axis of the input gear, and a locking bolt threaded into the second sliding groove is inserted therein. By adjusting the distance between the head of the locking bolt and the rotating body, the housing is clamped, thereby fixing the rotating body to its current position.

[0014] In the aforementioned motorcycle reversing assist device, the housing is also provided with a third slide groove that extends arc-shaped around the central axis of the input gear, and the output shaft extends out from the third slide groove.

[0015] The third slide extends vertically. When the rotating body rotates, the output shaft can slide within the third slide, thereby adjusting the vertical height of the output shaft and the sprocket to adapt to different models of motorcycles.

[0016] In the above-mentioned motorcycle reversing assist device, the box body is also provided with a fourth slide groove located below the third slide groove. The extension trajectory of the fourth slide groove is parallel to the extension trajectory of the third slide groove. A support shaft parallel to the output shaft is slidably provided in the fourth slide groove. A support wheel located directly below the sprocket is provided on the support shaft. The support shaft is also provided with a locking structure for fixing the support shaft that has slid into place in its current position.

[0017] Support wheels are used to support the chain and prevent the chain from coming loose from the sprocket.

[0018] In the aforementioned motorcycle reversing assist device, the locking structure includes a rod head located at the end of the support shaft away from the support wheel and a locking nut threaded onto the support shaft. The locking nut, in conjunction with the rod head, clamps the housing. After loosening the locking nut, the support shaft can slide within the fourth slide groove. Once slid into place, the locking nut and rod head lock the support shaft in its current position.

[0019] In the above-mentioned motorcycle reversing assist device, two limiting plates are respectively mounted on the output shaft on both sides of the sprocket. The lower ends of the limiting plates are fixed on the support shaft, and the support wheel is rotatably positioned between the two limiting plates.

[0020] In the above-mentioned motorcycle reversing assist device, a bearing is provided between the limiting plate and the output shaft.

[0021] In the above-mentioned motorcycle reversing assist device, the box body includes a connecting plate, a mounting plate disposed opposite to the connecting plate, and a barrier disposed between the connecting plate and the mounting plate. The motor is mounted on the mounting plate, the second slide groove is disposed on the mounting plate, the third slide groove and the fourth slide groove are disposed on the connecting plate, and the connecting plate is provided with a connecting hole.

[0022] The mounting plate is clamped by adjusting the distance between the head of the locking bolt and the rotating body, thereby fixing the rotating body in its current position; the connecting plate is clamped by adjusting the distance between the locking nut and the rod head, thereby fixing the support shaft in its current position; the connecting hole is used to install the connecting plate onto the motorcycle swing arm.

[0023] Compared with existing technologies, this motorcycle reversing assist device has the following advantages:

[0024] Because it is equipped with a safety device, it can prevent the intermediate gear from sliding towards the output gear when the motor is not in operation, thus preventing the chain movement from being restricted by the motor and preventing the intermediate gear from meshing with the output gear due to vibration. The safety device disengages from the intermediate gear before the motor starts operating, thereby ensuring that the rotation of the input gear can be smoothly transmitted to the sprocket. Since the rotating body is rotatable, the height of the sprocket can be adjusted to meet the installation requirements of motorcycles of different heights. There is no one-way sprocket, making it more reliable in use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the reversing assist device for this motorcycle.

[0026] Figure 2 This is another structural diagram of the motorcycle reversing assist device.

[0027] Figure 3 yes Figure 2 A structural diagram showing the connection plate hidden in the middle.

[0028] Figure 4 yes Figure 3 A schematic diagram of the structure when the inner plate is hidden.

[0029] Figure 5 This is a structural diagram of the reversing assist device for this motorcycle.

[0030] Figure 6 This is a schematic diagram of the structure when the safety component abuts against the intermediate gear.

[0031] Figure 7 This is a schematic diagram of the structure when the intermediate gear and the output gear mesh.

[0032] Figure 8 This is a schematic diagram of the installation of the motorcycle reversing assist device.

[0033] In the diagram, 10 is the second slide rail; 11 is the third slide rail; 12 is the fourth slide rail; 13 is the connecting plate; 14 is the mounting plate; 15 is the enclosure; 16 is the connecting hole; 21 is the inner plate; 211 is the first slide rail; 22 is the input gear; 23 is the intermediate gear; 24 is the output gear; 25 is the output shaft; 26 is the sprocket; 3 is the motor; 41 is the electromagnet; 42 is the mandrel; 5 is the locking bolt; 6 is the support shaft; 61 is the rod head; 62 is the locking nut; 7 is the support wheel; 8 is the limit plate; a is the chain; b is the swing arm. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] like Figure 1 and Figure 2 The motorcycle reversing assist device shown includes a housing and a gear assembly housed within the housing. The housing includes a connecting plate 13, a mounting plate 14 opposite to the connecting plate 13, and a retaining wall 15 positioned between the connecting plate 13 and the mounting plate 14. The connecting plate 13 and the mounting plate 14 are vertically aligned and fixed relative to each other, forming a cavity between them. The gear assembly is housed within this cavity. A connecting hole 16 is provided on the connecting plate 13. Figure 8 As shown, this device can be fixed to the swing arm b of the motorcycle via the connecting hole 16 and bolts.

[0036] like Figure 3 As shown, the gear assembly includes two relatively fixed inner plates 21, an input gear 22, an intermediate gear 23, and an output gear 24 rotatably disposed between the two inner plates 21. The intermediate gear 23 is always meshed with the input gear 22. An output shaft 25 is coaxially fixed to the output gear 24. The output shaft 25 extends from the connecting plate 13. A sprocket 26 that meshes with the chain a is coaxially fixed to the output shaft 25.

[0037] like Figure 5 As shown, the two inner plates 21 are parallel to the connecting plate 13, and each inner plate 21 is provided with a first sliding groove 211 extending in an upper and lower arc. The two first sliding grooves 211 are arranged opposite to each other, and the two ends of the rotating shaft coaxially arranged in the intermediate gear 23 are respectively slidably arranged in different first sliding grooves 211. Figure 6 As shown, when the rotating shaft is located at the lower end of the first slide groove 211, the intermediate gear 23 only meshes with the input gear 22, as follows: Figure 7 As shown, when the rotating shaft is located at the upper end of the first slide groove 211, the intermediate gear 23 meshes with the input gear 22 and the output gear 24 simultaneously.

[0038] like Figure 1 and Figure 5As shown, a motor 3 is fixed on the mounting plate 14. The shaft of the motor 3 is connected to the reducer. The input gear 22 is coaxially fixed on the output shaft of the reducer. When the motor 3 is working, it can drive the input gear 22 to rotate. When the input gear 22 rotates, it can drive the intermediate gear 23 to slide and make the intermediate gear 23 mesh with the output gear 24.

[0039] like Figure 4 and Figure 5 As shown, a safety device is provided between the two inner plates 21 to prevent the intermediate gear 23 from sliding towards the output gear 24 when the motor 3 is not in operation. The safety device can disengage from the intermediate gear 23 when the motor 3 is in operation.

[0040] In this embodiment, the safety element is an electromagnet 41 located above the intermediate gear 23. The electromagnet 41 contains a core rod 42 that extends when de-energized and retracts when energized. When the electromagnet 41 is de-energized, the lower end of the core rod 42 rests against the intermediate gear 23 located at the lower end of the first slide groove 211. When the motor 3 starts, the electromagnet 41 is energized, generating a magnetic field that attracts the core rod 42 to retract. When the motor 3 stops, the electromagnet 41 is de-energized, and a spring within the electromagnet 41 pushes the core rod 42 downwards. When the motor 3 is not in operation, the core rod 42 prevents the intermediate gear 23 from approaching the output gear 24.

[0041] A rotating body, consisting of two inner plates 21, an input gear 22, an intermediate gear 23, an output gear 24, and a safety device, is rotatably mounted inside the housing. Its center line of rotation is the central axis of the input gear 22. Figure 1 As shown, the mounting plate 14 is provided with a second slide groove 10 extending arcuately around the central axis of the input gear 22. A locking bolt 5, which is threadedly connected to the rotating body, passes through the second slide groove 10. The box is clamped by adjusting the distance between the head of the locking bolt 5 and the rotating body, thereby fixing the rotating body in the current position.

[0042] like Figure 2 As shown, the housing also has a third slide groove 11 extending arcuately around the central axis of the input gear 22, and a fourth slide groove 12 located below the third slide groove 11. The output shaft 25 extends out from the third slide groove 11. The extension trajectory of the fourth slide groove 12 is parallel to the extension trajectory of the third slide groove 11. A support shaft 6 parallel to the output shaft 25 is slidably mounted in the fourth slide groove 12. A support wheel 7 located directly below the sprocket 26 is mounted on the support shaft 6. The support shaft 6 also has a locking structure for fixing the slid-in support shaft 6 in its current position. The third slide groove 11 extends vertically. When the rotating body rotates, the output shaft 25 can slide within the third slide groove 11, thereby adjusting the vertical height of the output shaft 25 and the sprocket 26 to adapt to different models of motorcycles.

[0043] The support wheel 7 is used to support the chain a and prevent the chain a from becoming detached from the sprocket 26.

[0044] like Figure 3 , Figure 4 and Figure 5 As shown, the locking structure includes a rod head 61 located at the end of the support shaft 6 away from the support wheel 7 and a locking nut 62 threaded onto the support shaft 6. The locking nut 62, in conjunction with the rod head 61, clamps the housing. After loosening the locking nut 62, the support shaft 6 can slide within the fourth slide groove 12. Once in place, the locking nut 62 and the rod head 61 lock the support shaft 6 in its current position.

[0045] like Figure 2-5 As shown, two limiting plates 8 are respectively located on both sides of the sprocket 26 on the output shaft 25. The lower ends of the limiting plates 8 are fixed on the support shaft 6. The support wheel 7 is rotatably located between the two limiting plates 8. A bearing is provided between the limiting plates 8 and the output shaft 25.

[0046] The mounting plate 14 is clamped by adjusting the distance between the head of the locking bolt 5 and the rotating body, thereby fixing the rotating body in its current position. The connecting plate 13 is clamped by adjusting the distance between the locking nut and the rod head 61, thereby fixing the support shaft 6 in its current position, thus accommodating the installation of motorcycles of different heights. The sprocket 26 can move and be fixed along the output shaft 25, and the support wheel 7 can move and be fixed along the support shaft 6, adapting to the installation requirements of motorcycles of different widths.

[0047] The working process of this device is as follows: When the motorcycle needs to reverse, the motor 3 is started, and the electromagnet 41 is energized at the same time. The core rod 42 inside the electromagnet 41 retracts into the electromagnet 41 under the action of magnetic attraction. The motor 3 drives the input gear 22 to rotate through the reducer. The output gear 22 drives the intermediate gear 23 to slide in the first slide groove 211 and makes the intermediate gear 23 mesh with the output gear 24, transmitting the rotation of the input gear 22 to the output gear 24, thereby driving the output shaft 25 and the sprocket 26 provided on the output shaft 25 to rotate. The sprocket 26 drives the chain a to move in the opposite direction, thereby driving the motorcycle wheel to reverse and realizing reversing.

[0048] After reversing, the circuit system controlling motor 3 sends a reverse signal to motor 3, causing motor 3 to reverse briefly (reversal time is 1 second), which drives input gear 22 to reverse. When input gear 22 reverses, it drives intermediate gear 23 to move downward along the first slide groove 211, so that intermediate gear 23 completely disengages from output gear 24. Then electromagnet 41 is de-energized, and core rod 42 abuts against intermediate gear 23 under the action of spring, isolating intermediate gear 23 from output gear 24.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A motorcycle reversing assist device, characterized in that, The device includes a housing and a gear assembly disposed within the housing. The gear assembly includes two relatively fixed inner plates (21), an input gear (22), an intermediate gear (23), and an output gear (24) rotatably disposed between the two inner plates (21). An output shaft (25) is coaxially fixed to the output gear (24), and a sprocket (26) coaxially fixed to the output shaft (25) and meshing with a chain (a). The input gear (22) is driven by a motor (3) disposed on the housing. Both inner plates (21) are provided with a first sliding groove (211). 211) The intermediate gear (23) is arranged relative to each other and can slide along the first slide groove (211). The intermediate gear (23) is always meshed with the input gear (22). When the motor (3) is working, the input gear (22) drives the intermediate gear (23) to slide and mesh with the output gear (24). A safety device is provided between the two inner plates (21) to prevent the intermediate gear (23) from sliding to the output gear (24) when the motor (3) is not working. The safety device can disengage from blocking the intermediate gear (23) when the motor (3) is working.

2. The motorcycle reversing assist device according to claim 1, characterized in that, The first slide (211) extends in an arc around the rotation centerline of the input gear (22). The intermediate gear (23) located at the lower end of the first slide (211) meshes only with the input gear (22), while the intermediate gear (23) located at the upper end of the first slide (211) meshes with both the input gear (22) and the output gear (24).

3. The motorcycle reversing assist device according to claim 2, characterized in that, The safety device is an electromagnet (41) located above the intermediate gear (23). The electromagnet (41) has a core rod (42) that can extend when the power is off and retract when the power is on. When the electromagnet (41) is de-energized, the lower end of the core rod (42) abuts against the intermediate gear (23) located at the lower end of the first slide groove (211).

4. The motorcycle reversing assist device according to claim 1, 2, or 3, characterized in that, A rotating body consisting of two inner plates (21), an input gear (22), an intermediate gear (23), an output gear (24), and a safety device is rotatably disposed in the box. Its rotation centerline is the central axis of the input gear (22). The box is provided with a second slide groove (10) extending arc-shaped around the central axis of the input gear (22). A locking bolt (5) threadedly connected to the rotating body is inserted in the second slide groove (10).

5. The motorcycle reversing assist device according to claim 4, characterized in that, The housing is also provided with a third slide groove (11) that extends arcuately around the central axis of the input gear (22), and the output shaft (25) extends out from the third slide groove (11).

6. The motorcycle reversing assist device according to claim 5, characterized in that, The box body is also provided with a fourth slide groove (12) located below the third slide groove (11). The extension trajectory of the fourth slide groove (12) is parallel to the extension trajectory of the third slide groove (11). A support shaft (6) parallel to the output shaft (25) is slidably provided in the fourth slide groove (12). A support wheel (7) located directly below the sprocket (26) is provided on the support shaft (6). A locking structure for fixing the support shaft (6) that has slid into place in its current position is also provided on the support shaft (6).

7. The motorcycle reversing assist device according to claim 6, characterized in that, The locking structure includes a rod head (61) located at the end of the support shaft (6) away from the support wheel (7) and a locking nut (62) threaded onto the support shaft (6). The locking nut (62) cooperates with the rod head (61) to clamp the box body.

8. The motorcycle reversing assist device according to claim 6, characterized in that, The output shaft (25) is fitted with two limiting plates (8) located on both sides of the sprocket (26). The lower ends of the limiting plates (8) are fixed on the support shaft (6). The support wheel (7) is rotatably positioned between the two limiting plates (8).

9. The motorcycle reversing assist device according to claim 8, characterized in that, A bearing is provided between the limiting plate (8) and the output shaft (25).

10. The motorcycle reversing assist device according to claim 6, characterized in that, The box body includes a connecting plate (13), a mounting plate (14) opposite to the connecting plate (13), and a barrier (15) between the connecting plate (13) and the mounting plate (14). The motor (3) is mounted on the mounting plate (14). The second slide groove (10) is provided on the mounting plate (14). The third slide groove (11) and the fourth slide groove (12) are provided on the connecting plate (13). The connecting plate (13) is provided with a connecting hole (16).

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