Integrated power device for electric bicycle or electric motorcycle

Abstract

The utility model relates to an electric self-propelled power device, in particular to an integrated power device for an electric bicycle or an electric motorcycle, which comprises a motor and a front chain wheel, and further comprises a transmission seat arranged on the motor; the driving gear is arranged on a shaft of the motor and is positioned in the transmission seat; the primary gear is rotationally arranged on the transmission seat and is meshed with the driving gear; the second-stage gear is rotationally arranged on the transmission seat and is meshed with the first-stage gear; the middle hub is arranged on the secondary gear and is connected with the front chain wheel; and the diameters of the driving gear, the first-stage gear and the second-stage gear are sequentially increased. The integrated power device for the electric bicycle or the electric motorcycle has a multi-stage transmission ratio, the output torque is greatly improved, the power is ensured, the motor is not arranged on a rear fork, and meanwhile the integrated structure is convenient to install and compact.

Description

Technical Field

[0001] The utility model relates to an electric self-propelled power device, in particular to an integrated power device used for an electric bicycle or an electric motorcycle. Background Art

[0002] Most of the motors of existing electric vehicles are directly installed on the front wheel or the rear wheel. This method is suitable for electric bicycles with less power, while electric motorcycles need to output more power, and the size of the motor is larger, so the existing installation method is not suitable. Therefore, the motor needs to be installed in other positions. The motor can be installed in the middle of the frame and then connected to the rear wheel through a transmission device. For example, a rear fork, a rear fork assembly and an electric motorcycle disclosed in CN217649588U are arranged on the rear fork by arranging the first installation position and the second installation position for installing the control component and the motor component, thereby effectively improving the compactness of the arrangement of the controller and the motor in the electric motorcycle, that is, reducing the complexity of the wiring harness arrangement (the direction and fixing process of the wiring harness in the vehicle) when the controller is too dispersed relative to the motor. At the same time, arranging the controller and the motor together will also effectively reduce the length of the wiring harness, thereby reducing the manufacturing cost of the motorcycle. However, this structure only drives the driven sprocket on the rear wheel through the active sprocket installed on the motor, and there is only one transmission ratio as a whole, resulting in insufficient power output. Utility Model Content

[0003] In order to solve the above-mentioned problem of insufficient output power, the utility model provides an integrated power device for an electric bicycle or an electric motorcycle, and the specific technical solution is as follows:

[0004] An integrated power device for an electric bicycle or electric motorcycle comprises a motor and a front sprocket, and further comprises: a transmission seat, which is arranged on the motor; a driving gear, which is arranged on the shaft of the motor and is located in the transmission seat; a primary gear, which is rotatably arranged on the transmission seat and meshed with the driving gear; a secondary gear, which is rotatably arranged on the transmission seat and meshed with the primary gear; and a center hub, which is arranged on the secondary gear and connected to the front sprocket; wherein the diameters of the driving gear, the primary gear and the secondary gear increase in sequence.

[0005] Preferably, the transmission seat includes: a transmission base, which is arranged on the motor; and a transmission cover plate, which is arranged on the transmission base, and the first-stage gear and the second-stage gear are both rotatably mounted on the transmission base and the transmission cover plate.

[0006] Preferably, it further comprises: a primary bearing, disposed between the primary gear and the transmission seat; and a secondary bearing, disposed between the secondary gear and the transmission seat.

[0007] Preferably, it also includes: an oil seal, which is arranged between the center hub and the transmission seat.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The utility model provides an integrated power device for an electric bicycle or an electric motorcycle, which has a multi-stage transmission ratio, greatly improves the output torque, ensures the power, and the motor is not on the rear fork. At the same time, the integrated structure is easy to install and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a stereogram of the first viewing angle of the present application;

[0011] Figure 2 It is a stereogram of the second viewing angle of the present application;

[0012] Figure 3 is a top view of the present application;

[0013] Figure 4 This is a schematic diagram of the structure of the present application after the transmission cover is hidden;

[0014] Figure 5 yes Figure 4 A front view of

[0015] Figure 6 It is a structural diagram of the transmission base;

[0016] Figure 7 It is a structural schematic diagram of the transmission cover;

[0017] Figure 8 This is the assembly diagram of the middle hub and the secondary gear;

[0018] Fig. 9 It is a schematic diagram of the structure of the present application installed on a vehicle frame;

[0019] Fig.10 yes Fig. 9 Schematic diagram after hiding the front frame;

[0020] Fig.11 yes Fig. 9 A front view of

[0021] Fig.12 yes Fig. 9 Top view of the . DETAILED DESCRIPTION

[0022] The utility model is now further described with reference to the accompanying drawings.

[0023] like Figures 1 to 8As shown, an integrated power device for an electric bicycle or electric motorcycle includes a motor 1, a front sprocket 8, a transmission seat, a driving gear 4, a primary gear 5, a secondary gear 6 and a center hub 7, wherein the diameters of the driving gear 4, the primary gear 5 and the secondary gear 6 increase in sequence. The transmission seat includes a transmission base 2 and a transmission cover plate 3, wherein the transmission base 2 is mounted on the motor 1, and a first rotation groove 21 and a second rotation groove 22 are provided on the transmission base 2, and the transmission cover plate 3 is fixed on the transmission base 2 by screws, and a third rotation groove 31, a fourth rotation groove 32 and a fifth rotation groove 33 are provided on the transmission cover plate 3, wherein the third rotation groove 31 is arranged opposite to the first rotation groove 21, and the fourth rotation groove 32 is arranged opposite to the second rotation groove 22. The driving gear 4 is mounted on the shaft of the motor 1 and is located in the fifth rotation groove 33. A primary bearing 51 is installed in each of the first rotation groove 21 and the third rotation groove 31, and the primary gear 5 is mounted on the primary bearing 51. The second rotating groove 22 and the fourth rotating groove 32 are both equipped with secondary bearings 62, and the secondary gear 6 is installed on the secondary bearings 62. The driving gear 4, the primary gear 5 and the secondary gear 6 are meshed in sequence. The two ends of the middle hub 7 are fixedly connected to the secondary gear 6 and the front sprocket 8 respectively. An upper oil seal 64 is also installed between the middle hub 7 and the transmission base 2 and the transmission cover plate 3.

[0024] The driving gear 4, the first gear 5 and the second gear 6 realize two-stage reduction, which greatly improves the output power. At the same time, the overall structure is compact, and the overall structure is more convenient to install and not easy to damage, thereby improving the reliability and stability of use.

[0025] like Figures 9 to 12 As shown, the front frame 91 is connected to the rear fork 94 via a connecting shaft 93, the connecting shaft 93 is respectively connected to the rear fork 94 and the center hub 7 via bearings, and the front sprocket 8 is connected to the rear sprocket 95 via a chain.

[0026] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. An integrated power device for an electric bicycle or an electric motorcycle, comprising a motor (1) and a front sprocket (8), characterized in that: Also includes: A transmission seat, arranged on the motor (1); A driving gear (4) is arranged on the shaft of the motor (1) and is located in the transmission seat; A first gear (5) is rotatably mounted on the transmission seat and meshes with the driving gear (4); a secondary gear (6) rotatably disposed on the transmission seat and meshing with the primary gear (5); and A middle hub (7) is arranged on the secondary gear (6) and is connected to the front sprocket (8); Wherein, the diameters of the driving gear (4), the primary gear (5) and the secondary gear (6) increase in sequence.

2. An integrated power device for an electric bicycle or electric motorcycle according to claim 1, characterized in that: The transmission seat comprises: A transmission base (2) is arranged on the motor (1); and The transmission cover plate (3) is arranged on the transmission base (2), and the first-stage gear (5) and the second-stage gear (6) are both rotatably mounted on the transmission base (2) and the transmission cover plate (3).

3. The integrated power device for an electric bicycle or an electric motorcycle according to claim 1, characterized in that: Also includes: A primary bearing (51) is provided between the primary gear (5) and the transmission seat; as well as The secondary bearing (62) is arranged between the secondary gear (6) and the transmission seat.

4. The integrated power device for an electric bicycle or an electric motorcycle according to claim 1, characterized in that: Also includes: An oil seal (64) is arranged between the center hub (7) and the transmission seat.

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