Differential shaft of electric moped

Abstract

The utility model relates to the technical field of axles, and discloses a differential shaft of an electric moped, which comprises a power shaft, the outer surface of one end of the power shaft is fixedly connected with a variable speed chain plate, the outer surface of the power shaft is fixedly connected with a transmission gear, the outer surface of the power shaft is fixedly connected with two bearings, and the two bearings are fixedly connected with the transmission gear. And the other bearing is arranged on the inner wall of the sleeve, the connection between the power shaft and the sleeve can be kept through the arrangement of the bearings, and meanwhile normal rotation of the power shaft is kept. The differential shaft has the advantages that by arranging the power shaft, the variable speed chain disc and the driven shaft, when a worker uses the differential shaft, an original moped driving shaft is broken at the mounting position of the variable speed chain disc and divided into the power shaft and the driven shaft, and the power shaft and the driven shaft are connected together through the connecting bearing on the outer surface of the driven shaft; when the two rear wheels are turned or run on an uneven road surface, the left wheel and the right wheel roll at different rotating speeds, the vehicle body cannot turn on one side, and the effect of preventing the vehicle body from turning on one side is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of axles, in particular to a differential axle for an electric power-assisted vehicle. Background Art

[0002] The drive axle at the rear of a three-wheel electric power-assisted vehicle drives two rear wheels simultaneously, and the rotational speeds of the two rear wheels are the same when steering. There is no impact at low speeds, but if the steering speed is too fast, there is a risk of vehicle body rollover or even tipping over.

[0003] According to Chinese Patent No. CN109986911A, an axle is provided, belonging to the field of motor vehicle manufacturing. It is provided with at least one connecting device or disc device that can rotate concentrically with the axle device and is not at the two ends of the axle on the axle device, which is an axle with a certain auxiliary function, serving two purposes with one object and saving resources.

[0004] The above patent has a good auxiliary effect, but when the two rear wheels are turning or driving on an uneven road surface, the left and right wheels may roll at different rotational speeds, causing a rollover. Content of the Utility Model

[0005] The purpose of the utility model is to provide a differential axle for an electric power-assisted vehicle, which has the effect of preventing rollover.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A differential axle for an electric power-assisted vehicle includes a power shaft. A variable-speed chain sprocket is fixedly connected to the outer surface of one end of the power shaft. A transmission gear is fixedly connected to the outer surface of the power shaft. A bearing is fixedly connected to the outer surface of the power shaft. A sleeve is fixedly connected to the outer surface of the bearing. A curved beam is fixedly connected to the outer surface of the sleeve. A hub connector is fixedly connected to the other end of the power shaft. A connecting bearing is connected to the inner wall of the power shaft. A driven shaft is fixedly connected to the inner wall of the connecting bearing.

[0007] By adopting the above technical solutions, through the settings of the power shaft, variable-speed chain sprocket and driven shaft, when the staff uses the differential axle, the original drive axle of the power-assisted vehicle is broken at the installation position of the variable-speed chain sprocket, divided into a power shaft and a driven shaft, and connected together through the connecting bearing on the outer surface of the driven shaft. When the two rear wheels are turning or driving on an uneven road surface, the left and right wheels roll at different rotational speeds, and the vehicle body will not roll over, achieving the effect of preventing rollover.

[0008] The further setting of the utility model is: The number of the bearings is two, and the other bearing is arranged on the inner wall of the sleeve.

[0009] By adopting the above technical solutions, the setting of the bearings can maintain the connection between the power shaft and the sleeve, and at the same time keep the power shaft rotating normally, maintaining the use effect.

[0010] A further setting of the present utility model is that a connecting member is fixedly connected to the outer surface of the bent beam, and a connection hole is provided on the outer surface of the connecting member.

[0011] By adopting the above technical solution, the arrangement of the connecting member and the connection hole can facilitate the connection between the differential shaft and the vehicle frame, and keep the device stable.

[0012] A further setting of the present utility model is that the number of the connecting members is two, and the two connecting members are both fixedly connected to the outer surface of the bent beam.

[0013] By adopting the above technical solution, the arrangement of the two connecting members can connect the bent beam at multiple points, and promote the more stable connection of the bent beam.

[0014] A further setting of the present utility model is that the number of the sleeves is two, and the two sleeves are fixedly connected to both ends of the bent beam.

[0015] By adopting the above technical solution, the arrangement of the sleeves can connect the power shaft and the driven shaft in two directions, and promote the stable connection of the device.

[0016] A further setting of the present utility model is that a positioning hole is provided on the outer surface of the hub connecting member.

[0017] By adopting the above technical solution, the arrangement of the positioning hole facilitates the installation of the hub and improves the adaptability of the device.

[0018] A further setting of the present utility model is that the number of the positioning holes is six, and the six positioning holes are fixedly connected to the outer surface of the hub connecting member in a form of circular array.

[0019] By adopting the above technical solution, the arrangement of the six positioning holes can install and fix the tire at multiple points, and improve the stability of the tire installation.

[0020] A further setting of the present utility model is that the driven shaft includes a support tube, one end of the support tube is fixedly connected with a connecting block, and one end of the connecting block is fixedly connected with a main shaft body.

[0021] By adopting the above technical solution, the arrangement of the driven shaft can improve the functionality and stability of the driven shaft, improve the use efficiency and reduce the use cost.

[0022] A further setting of the present utility model is that connection bearings are fixedly connected to both ends of the outer surface of the support tube.

[0023] By adopting the above technical solution, the arrangement of the bearings can improve the connection stability of the support tube on the inner wall of the power shaft, reduce the rotation resistance and improve the use effect.

[0024] A further setting of the present utility model is that a sleeve is provided on the outer surface of the main shaft body, and a hub connecting member is fixedly connected to one end of the main shaft body.

[0025] By adopting the above technical solution, the setting of the main shaft body can be basically the same as the configuration of the driving shaft, so as to promote the balance on both sides of the device and ensure stable installation.

[0026] The beneficial effect of the present utility model is that through the settings of the power shaft, the speed-changing chain sprocket and the driven shaft, when the staff uses the differential shaft, the original driving shaft of the moped is interrupted at the installation position of the speed-changing chain sprocket and divided into a power shaft and a driven shaft, which are connected together through the connecting bearings on the outer surface of the driven shaft. When the two rear wheels turn or drive on an uneven road surface, the left and right wheels roll at different speeds, and the vehicle body will not roll over, achieving the effect of preventing rollover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic axonometric structure diagram of the present utility model;

[0029] Figure 2 It is a schematic cross-sectional structure diagram of the present utility model;

[0030] Figure 3 For the present utility model Figure 2 Schematic structure diagram at position A;

[0031] Figure 4 For the present utility model Figure 2 Schematic structure diagram at position B.

[0032] In the figure, 1, power shaft; 2, speed-changing chain sprocket; 3, transmission gear; 4, bearing; 5, sleeve; 6, curved beam; 7, hub connecting member; 8, connecting bearing; 9, driven shaft; 10, connecting member; 11, connecting hole; 12, positioning hole; 901, support pipe; 902, connecting block; 903, main shaft body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0034] Referring to Figures 1-4 , an electric assist vehicle differential shaft includes a power shaft 1. A variable speed chain sprocket 2 is fixedly connected to the outer surface of one end of the power shaft 1. A transmission gear 3 is fixedly connected to the outer surface of the power shaft 1. A bearing 4 is fixedly connected to the outer surface of the power shaft 1. The number of bearings 4 is two. The other bearing 4 is arranged on the inner wall of a sleeve 5. The arrangement of the bearings can maintain the connection between the power shaft and the sleeve, and at the same time keep the power shaft rotating normally, maintaining the use effect. The outer surface of the bearing 4 is fixedly connected to a sleeve 5. The number of sleeves 5 is two. The two sleeves 5 are fixedly connected to both ends of a curved beam 6. The arrangement of the sleeves can connect the power shaft and the driven shaft in two directions, prompting the device to maintain a stable connection. The outer surface of the sleeve 5 is fixedly connected to a curved beam 6. A connecting member 10 is fixedly connected to the outer surface of the curved beam 6. The number of connecting members 10 is two. The two connecting members 10 are both fixedly connected to the outer surface of the curved beam 6. The arrangement of the two connecting members can connect the curved beam at multiple points, making the connection of the curved beam more stable. A connection hole 11 is formed on the outer surface of the connecting member 10. The arrangement of the connecting member and the connection hole can facilitate the connection between the differential shaft and the vehicle frame, keeping the device stable. The other end of the power shaft 1 is fixedly connected to a hub connecting member 7. A positioning hole 12 is formed on the outer surface of the hub connecting member 7. The number of positioning holes 12 is six. The six positioning holes 12 are fixedly connected to the outer surface of the hub connecting member 7 in a circular array. The arrangement of the six positioning holes can install and fix the tire through multiple points, improving the stability of the tire installation. The arrangement of the positioning holes facilitates the installation of the hub and improves the adaptability of the device. A connecting bearing 8 is connected to the inner wall of the power shaft 1. A driven shaft 9 is fixedly connected to the inner wall of the connecting bearing 8. The driven shaft 9 includes a support tube 901. One end of the support tube 901 is fixedly connected to a connecting block 902. One end of the connecting block 902 is fixedly connected to a main shaft body 903. The arrangement of the driven shaft can improve the functionality and stability of the driven shaft, improve the use efficiency, and reduce the use cost. Connecting bearings 8 are fixedly connected to both ends of the outer surface of the support tube 901. The arrangement of the bearings can improve the connection stability of the support tube on the inner wall of the power shaft, reduce the rotation resistance, and improve the use effect. A sleeve 5 is arranged on the outer surface of the main shaft body 903. One end of the main shaft body 903 is fixedly connected to a hub connecting member 7. The arrangement of the main shaft body can be basically the same as that of the driving shaft, prompting the device to maintain the balance and stable installation on both sides.

[0035] In the present utility model, when the staff uses this differential shaft, the original driving shaft of the assist vehicle is broken at the installation position of the variable speed chain sprocket 2, divided into a power shaft 1 and a driven shaft 9, and connected together through the connecting bearing 8 on the outer surface of the driven shaft 9. When the two rear wheels are turning or driving on an uneven road surface, while maintaining normal connection and operation on both sides, the left and right wheels roll at different speeds, and the vehicle body will not roll over.

[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A differential shaft of an electric power-assisted bicycle, comprising a power shaft (1), characterized in that: The outer surface of one end of the power shaft (1) is fixedly connected to a speed change chain plate (2), the outer surface of the power shaft (1) is fixedly connected to a transmission gear (3), the outer surface of the power shaft (1) is fixedly connected to a bearing (4), the outer surface of the bearing (4) is fixedly connected to a sleeve (5), the outer surface of the sleeve (5) is fixedly connected to a bending beam (6), the other end of the power shaft (1) is fixedly connected to a hub connector (7), the inner wall of the power shaft (1) is connected to a connecting bearing (8), and the inner wall of the connecting bearing (8) is fixedly connected to a driven shaft (9).

2. The electric power-assisted vehicle differential shaft according to claim 1, characterized in that: The number of the bearings (4) is two, and the other bearing (4) is arranged on the inner wall of the sleeve (5).

3. The electric power-assisted vehicle differential shaft according to claim 1, characterized in that: A connecting piece (10) is fixedly connected to the outer surface of the curved beam (6), and a connecting hole (11) is provided on the outer surface of the connecting piece (10).

4. The electric power-assisted vehicle differential shaft according to claim 3, characterized in that: The number of the connecting members (10) is two, and the two connecting members (10) are both fixedly connected to the outer surface of the curved beam (6).

5. The electric power-assisted vehicle differential shaft according to claim 1, characterized in that: The number of the sleeves (5) is two, and the two sleeves (5) are fixedly connected to the two ends of the curved beam (6).

6. The electric power-assisted vehicle differential shaft according to claim 1, characterized in that: The outer surface of the hub connector (7) is provided with a positioning hole (12).

7. The electric power-assisted vehicle differential shaft according to claim 6, characterized in that: The number of the positioning holes (12) is six, and the six positioning holes (12) are fixedly connected to the outer surface of the hub connector (7) in the form of an annular array.

8. The electric power-assisted vehicle differential shaft according to claim 1, characterized in that: The driven shaft (9) comprises a support tube (901), one end of the support tube (901) is fixedly connected to a connection block (902), and one end of the connection block (902) is fixedly connected to a main shaft body (903).

9. The electric power-assisted vehicle differential shaft according to claim 8, characterized in that: Both ends of the outer surface of the support tube (901) are fixedly connected with connecting bearings (8).

10. The electric power-assisted vehicle differential shaft according to claim 8, characterized in that: The outer surface of the main shaft body (903) is provided with a sleeve (5), and one end of the main shaft body (903) is fixedly connected to a hub connector (7).

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