Motor structure of electric motorcycle

Abstract

The utility model provides a motor structure of an electric motorcycle, and belongs to the technical field of electric motorcycles. The problem that the stability of rocker arm supporting is reduced while an existing electric motorcycle is convenient to install is solved. According to the motor structure of the electric motorcycle, the electric motorcycle comprises a chain wheel, the motor structure comprises a motor shell, a rocker arm is formed on the motor shell in a protruding mode, the chain wheel is located on one side of the rocker arm, the motor structure further comprises an annular belt or chain, and an output shaft is rotationally connected to the motor shell. The upper wall and the lower wall of one end of the rocker arm protrude outwards in the vertical direction to form a supporting part, a receding through hole formed in the front-back direction is formed in the supporting part, one end of the belt or the chain is arranged on the chain wheel in a sleeving mode, and the other end of the belt or the chain penetrates through the receding through hole to be arranged on the output shaft in a sleeving mode. The motor structure of the electric motorcycle is convenient to install, meanwhile, the overall strength of the rocker arm is guaranteed, and the stability of the whole motorcycle body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric motorcycles and relates to a motor structure of an electric motorcycle. Background Art

[0002] An electric motorcycle is a motorcycle powered by batteries, with an electric motor converting electrical energy into mechanical energy. Existing electric motorcycles typically have the motor mounted on the frame, with power transmitted to the rear sprocket via a chain or drive belt. However, to ensure stability, the existing motor rocker arm typically has two holes for the chain or drive belt to pass through. However, both the drive belt and the chain are closed loops, making their installation inconvenient.

[0003] To address the inconvenience of installation, existing patents such as [Application Publication No.: CN115583307A] disclose a new electric motorcycle drive system, which includes a sprocket and a reduction gearbox. The reduction gearbox is installed on one side of the sprocket, and a Y-shaped upper rocker arm and a rear section of a Y-shaped lower rocker arm are installed between the reduction gearbox and the sprocket. A front section of a Y-shaped lower rocker arm is installed on the top of the rear section of the Y-shaped lower rocker arm. A belt rotates between the Y-shaped upper rocker arm and the front end and rear section of the Y-shaped lower rocker arm, and pulleys are provided at both ends of the belt.

[0004] Although the above structure adopts a split structure for the rocker arm, which can facilitate the installation of the belt, the rocker arm of the electric motorcycle needs to have a certain strength to fix the rear wheel and withstand the pressure of the vehicle body. Therefore, the required strength is relatively high. The use of a split structure will lead to a reduction in the pressure-bearing capacity of the rocker arm, thereby affecting the stability of the vehicle body structure. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a motor structure for an electric motorcycle. The technical problem to be solved by this utility model is: how to solve the problem that the stability of the rocker arm support is reduced while achieving convenient installation of the existing electric motorcycle.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A motor structure for an electric motorcycle, the electric motorcycle includes a sprocket, the motor structure includes a motor housing, a rocker arm is formed on the motor housing, the sprocket is located on one side of the rocker arm, and is characterized in that the motor structure also includes an annular belt or chain, an output shaft is rotatably connected to the motor housing, the upper and lower walls of one end of the rocker arm both protrude outward in the up and down directions and form a support portion, the support portion is provided with a clearance hole arranged in the front and back directions, one end of the belt or chain is sleeved on the sprocket, and the other end of the belt or chain passes through the clearance hole and is sleeved on the output shaft.

[0008] Working principle: The sprocket and the motor housing are distributed along the front-to-back direction. The sprocket is located on one side of the rocker arm and is connected to the output shaft in a rotating manner inside the motor housing. When installing, the belt or chain can be directly passed through the clearance hole, so that the two ends of the belt and chain are respectively sleeved on the sprocket and the output shaft, which is convenient for installation. The output shaft can drive the belt or chain to rotate and realize the drive of the sprocket. In order to ensure the overall strength of the rocker arm, the upper and lower walls of one end of the rocker arm are protruded outward in the upper and lower directions to form a support part, which increases the strength of the rocker arm at the end with the clearance hole and reduces the influence of the larger clearance hole on the strength of the rocker arm. While facilitating installation, it also ensures the overall strength of the rocker arm and improves the stability of the entire vehicle body.

[0009] In the motor structure of the electric motorcycle described above, the middle portion of the rocker arm protrudes toward one side of the motor housing to form a reinforcement portion, and part of the reinforcement portion is located between the belts or chains.

[0010] The strength of the rocker arm can be increased by setting the position of the reinforcement part, and the reinforcement part does not affect the installation of the belt or chain, so the installation is convenient while ensuring the strength.

[0011] In the above-mentioned motor structure of the electric motorcycle, one end of the reinforcement portion is connected to the supporting portion, and the reinforcement portion is located in the clearance through hole.

[0012] By locating one end of the reinforcing portion below the supporting portion and the reinforcing portion in the clearance hole, the strength of the reinforcing portion at the clearance hole is further enhanced, and the stability of the rocker arm is further improved.

[0013] In the above-mentioned motor structure of the electric motorcycle, the width of the support portion gradually decreases from the end close to the output shaft to the end far away from the output shaft.

[0014] The setting of this structure allows the support part to compensate for the strength problem caused by the rocker arm having a clearance hole by increasing its width, and the width gradually decreases, so that the rocker arm can reduce the installation space while ensuring the corresponding support strength, thereby facilitating the installation of the rocker arm itself.

[0015] In the above-mentioned motor structure of the electric motorcycle, the reinforcement portion and the support portion are integrally formed.

[0016] The integrated design further improves the stability of the rocker arm.

[0017] Compared with the prior art, the motor structure of the electric motorcycle has the following advantages: when installing, the belt or chain can be directly passed through the clearance hole, which makes it convenient for the two ends of the belt and chain to be respectively sleeved on the sprocket and the output shaft, and is convenient for installation; the upper and lower walls at one end of the rocker arm are both protruded outward in the up and down directions and form a support portion, which increases the strength of the rocker arm at the end where the clearance hole is opened, reduces the influence of the larger clearance hole on the strength of the rocker arm, and ensures the overall strength of the rocker arm while facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the partial structural diagrams of the utility model.

[0019] Figure 2 This is one of the structural diagrams of the motor housing in the utility model.

[0020] Figure 3 This is the second structural diagram of the motor housing in the present utility model.

[0021] Figure 4 This is the second partial structural diagram of the present utility model.

[0022] In the figure, 1, sprocket; 2, motor housing; 21, output shaft; 3, rocker arm; 31, support part; 31a, clearance hole; 32, reinforcement part; 4, chain. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1 As shown, the motor structure of the electric motorcycle includes a sprocket 1 , and the motor structure includes a motor housing 2 , a rocker arm 3 is protruded from the motor housing 2 , and the sprocket 1 is located on one side of the rocker arm 3 .

[0025] Specifically, if Figure 1-4 As shown, the motor structure also includes an annular belt or chain 4, an output shaft 21 is rotatably connected to the motor housing 2, the upper and lower walls of one end of the rocker arm 3 protrude outward in the up-down direction and form a support portion 31, and a clearance hole 31a arranged in the front-to-back direction is opened on the support portion 31, one end of the belt or chain 4 is sleeved on the sprocket 1, and the other end of the belt or chain 4 passes through the clearance hole 31a and is sleeved on the output shaft 21.

[0026] Working principle: The sprocket 1 and the motor housing 2 are distributed along the front-to-back direction. The sprocket 1 is set on one side of the rocker arm 3. The output shaft 21 is rotatably connected in the motor housing 2. The belt or chain 4 can be directly passed through the clearance hole 31a during installation, so that the two ends of the belt and chain 4 are respectively sleeved on the sprocket 1 and the output shaft 21, which is convenient for installation. The output shaft 21 can drive the belt or chain 4 to rotate and realize the driving of the sprocket 1. In order to ensure the overall strength of the rocker arm 3, the upper and lower walls of one end of the rocker arm 3 protrude outward in the up and down directions and form a support part 31, which increases the strength of the rocker arm 3 at this end where the clearance hole is opened, and reduces the influence of the larger clearance hole 31a on the strength of the rocker arm 3. While facilitating installation, it also ensures the overall strength of the rocker arm 3 and improves the stability of the entire vehicle body.

[0027] like Figure 2-4 As shown, the middle part of the rocker arm 3 protrudes toward one side of the motor housing 2 to form a reinforcement portion 32, part of the reinforcement portion 32 is located between the belt or chain 4, one end of the reinforcement portion 32 is connected to the support portion 31, and the reinforcement portion 32 is located in the clearance hole 31a.

[0028] like Figure 1 and Figure 2 As shown, the width of the support portion 31 gradually decreases from one end close to the output shaft 21 to the other end away from the output shaft 21 , and the reinforcement portion 32 and the support portion 31 are integrally formed.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A motor structure of an electric motorcycle, comprising a sprocket (1), the motor structure comprising a motor housing (2), a rocker arm (3) protruding from the motor housing (2), the sprocket (1) being located on one side of the rocker arm (3), and characterized in that: The motor structure further comprises an annular belt or chain (4), an output shaft (21) is rotatably connected to the motor housing (2), upper and lower walls of one end of the rocker arm (3) are both protruded outward in the up-down direction to form a support portion (31), and a clearance hole (31a) arranged in the front-back direction is provided on the support portion (31), one end of the belt or chain (4) is sleeved on the sprocket (1), and the other end of the belt or chain (4) passes through the clearance hole (31a) and is sleeved on the output shaft (21).

2. The motor structure of the electric motorcycle according to claim 1, characterized in that: The middle portion of the rocker arm (3) is raised toward one side of the motor housing (2) to form a reinforcement portion (32), and part of the reinforcement portion (32) is located between the belts or chains (4).

3. The motor structure of the electric motorcycle according to claim 2, characterized in that: One end of the reinforcing portion (32) is connected to the supporting portion (31), and the reinforcing portion (32) is located in the clearance through hole (31a).

4. The motor structure of the electric motorcycle according to claim 1, 2 or 3, characterized in that: The width of the support portion (31) gradually decreases from an end close to the output shaft (21) to an end away from the output shaft (21).

5. The motor structure of the electric motorcycle according to claim 2 or 3, characterized in that: The reinforcing portion (32) and the supporting portion (31) are integrally formed.

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