Barrel axle hub motor of electric bicycle

Abstract

The utility model belongs to the technical field of electric bicycles, and particularly relates to an electric bicycle barrel shaft hub motor which comprises a hub motor and a machine shell installed on the periphery of the hub motor, a left half shaft is installed on the left side in the machine shell, one end of the left half shaft extends out of the machine shell and forms a first rotation limiting part, and a right half shaft is arranged on the right side in the machine shell. One end of the right half shaft extends out of the machine shell and is provided with a wire outlet end shaft in a forming mode, a rotation stopping sleeve is installed on the periphery of the wire outlet end shaft, a second rotation limiting part is formed at one end of the rotation stopping sleeve, and a wire outlet hole is formed in the wire outlet end shaft. When the motor rotates, the two end faces are clamped in the groove of the rear fork through the rotation limiting parts, the rotation stopping effect is achieved, the hub motor can be applied to and installed on the barrel-shaft bicycle, the hub motor can drive the barrel-shaft bicycle to move forwards, the installation structure is simple and reliable, and electronization of the barrel-shaft bicycle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycles, and particularly relates to a through-axle hub motor for an electric bicycle. Background Art

[0002] Due to the advantages of environmental protection, safety, lightness, etc., electric bicycles have become increasingly popular among sports enthusiasts around the world. As the core component of an electric bicycle, the hub motor has always been fixed outside the frame by nuts. Such a motor can only be installed on the open rear fork or front fork of a bicycle, and it cannot be installed on a through-axle bicycle without openings in both the front and rear forks, resulting in limited versatility. Therefore, this structure needs to be further improved. Content of the Utility Model

[0003] The purpose of the utility model is to provide a through-axle hub motor for an electric bicycle, which solves the fixation problem of the hub motor on a through-axle bicycle through the rotation-limiting parts at both ends.

[0004] The purpose of the utility model is realized as follows: A through-axle hub motor for an electric bicycle includes a hub motor and a housing installed on its outer periphery. A left half shaft is installed on the left side inside the housing. One end of the left half shaft extends out of the housing and forms a rotation-limiting part one. A right half shaft is arranged on the right side inside the housing. One end of the right half shaft extends out of the housing and forms an outgoing line end shaft. A rotation-stop sleeve is installed on the outer periphery of the outgoing line end shaft. One end of the rotation-stop sleeve forms a rotation-limiting part two. An outgoing line hole is opened in the outgoing line end shaft. A semi-circular outgoing line channel one communicating with the outgoing line hole is formed at the end of the outgoing line end shaft. A semi-circular outgoing line channel two communicating with the semi-circular outgoing line channel one is formed on the side surface of the rotation-limiting part two.

[0005] Preferably, rotation-limiting planes one are respectively formed on both side surfaces of the outgoing line end shaft. An installation hole is opened in the rotation-stop sleeve, and rotation-limiting planes two are respectively formed on both inner side surfaces of the installation hole.

[0006] Preferably, the rotation-limiting part one is U-shaped, and the rotation-limiting part two is U-shaped.

[0007] Preferably, a fixing screw hole one is opened in the rotation-limiting part one, and a fixing screw hole two is opened in the outgoing line end shaft.

[0008] Preferably, a clamping seat is installed on the outer periphery of the outgoing line end shaft, and a bearing is arranged between the outgoing line end shaft and the clamping seat.

[0009] The prominent and beneficial technical effects of the utility model compared with the prior art are:

[0010] The utility model connects to the rear fork of the thru-axle bicycle through the rotation-limiting parts on both sides of the hub motor. When the motor rotates, both end faces are clamped in the slots of the rear fork through the rotation-limiting parts, achieving the effect of stopping rotation, enabling the hub motor to be applied and installed on the thru-axle bicycle. The hub motor can drive the thru-axle bicycle forward. The installation structure is simple and reliable, realizing the electrification of the thru-axle bicycle, bringing more fun to the riding of the thru-axle bicycle. Moreover, the wires of the hub motor are led out from the wire outlet holes of the wire outlet end shaft, and are led to the outside through the semi-circular wire outlet channel one and the semi-circular wire outlet channel two to be connected to the power supply. Description of the Drawings

[0011] Figure 1 is a schematic three-dimensional structure of the utility model Figure 1 。

[0012] Figure 2 is a schematic three-dimensional structure of the utility model Figure 2 。

[0013] Figure 3 is a schematic cross-sectional structure diagram of the utility model.

[0014] Figure 4 is a schematic exploded structure diagram of some parts of the utility model.

[0015] Reference numerals: 1 - hub motor; 2 - housing; 3 - left half shaft; 4 - rotation-limiting part one; 5 - right half shaft; 6 - wire outlet end shaft; 7 - rotation-stopping sleeve; 8 - rotation-limiting part two; 9 - wire outlet hole; 10 - semi-circular wire outlet channel one; 11 - semi-circular wire outlet channel two; 12 - rotation-limiting plane one; 13 - mounting hole; 14 - rotation-limiting plane two;

[0016] 15 - fixing screw hole one; 16 - fixing screw hole two; 17 - card holder; 18 - bearing. Detailed Description of the Preferred Embodiment

[0017] The following further describes in detail the specific embodiments of the utility model with reference to the drawings.

[0018] As Figures 1-4 shown, an electric bicycle thru-axle hub motor includes a hub motor 1 and a housing 2 installed on its outer periphery. A left half shaft 3 is installed on the left side inside the housing 2. One end of the left half shaft 3 extends out of the housing 2 and is formed with a rotation-limiting part one 4. A right half shaft 5 is arranged on the right side inside the housing 2. One end of the right half shaft 5 extends out of the housing 2 and is formed with a wire outlet end shaft 6. A rotation-stopping sleeve 7 is installed on the outer periphery of the wire outlet end shaft 6. One end of the rotation-stopping sleeve 7 is formed with a rotation-limiting part two 8. A wire outlet hole 9 is opened in the wire outlet end shaft 6. A semi-circular wire outlet channel one 10 communicating with the wire outlet hole 9 is formed at the end of the wire outlet end shaft 6. A semi-circular wire outlet channel two 11 communicating with the semi-circular wire outlet channel one 10 is formed on the side surface of the rotation-limiting part two 8.

[0019] The utility model connects to the rear fork of the thru-axle bicycle through the rotation-limiting parts on both sides of the hub motor. When the motor rotates, both end faces are clamped in the slots of the rear fork through the rotation-limiting parts, achieving the effect of stopping rotation, enabling the hub motor to be applied and installed on the thru-axle bicycle. The hub motor can drive the thru-axle bicycle forward. The installation structure is simple and reliable, realizing the electrification of the thru-axle bicycle, bringing more fun to the riding of the thru-axle bicycle. Moreover, the wires of the hub motor are led out from the wire outlet holes 9 of the wire outlet end shaft 6, and are led to the outside to be connected to the power supply through the semi-circular wire outlet channel one 10 and the semi-circular wire outlet channel two 11.

[0020] On both side faces of the wire outlet end shaft 6, a rotation-limiting plane one 12 is respectively formed. An installation hole 13 is opened in the rotation-stopping sleeve 7, and rotation-limiting plane two 14 are respectively formed on both inner side faces of the installation hole 13. The rotation-stopping sleeve 7 is sleeved on the outer periphery of the wire outlet end shaft 6 through the installation hole 13. Through the cooperation of the rotation-limiting plane one and the rotation-limiting plane two, the rotation of the rotation-stopping sleeve can be limited.

[0021] The rotation-limiting part one 4 is U-shaped, and the rotation-limiting part two 8 is U-shaped. This shape matches the U-shaped grooves on the inner end faces of the left and right sides of the rear fork of the thru-axle bicycle. Therefore, after installation and connection, when the motor rotates, both end faces are clamped in the U-shaped grooves of the rear fork, achieving the purpose of stopping rotation, enabling the hub motor to drive the thru-axle bicycle forward.

[0022] A fixing screw hole one 15 is opened in the rotation-limiting part one 4, and a fixing screw hole two 16 is opened in the wire outlet end shaft 6. After the rotation-limiting parts at both ends of the hub motor are placed in the U-shaped installation grooves on the thru-axle bicycle, both ends are fixed by screwing the screws through the fixing screw holes and tightening them, and the installation of the hub motor can be realized.

[0023] A clamping seat 17 is installed on the outer periphery of the wire outlet end shaft 6, and a bearing 18 is arranged between the wire outlet end shaft 6 and the clamping seat 17.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. An electric bicycle barrel axle hub motor, characterized in that: The invention comprises a wheel hub motor (1) and a casing (2) mounted on the outer periphery thereof, wherein a left half shaft (3) is mounted on the left side of the casing (2), one end of the left half shaft (3) protrudes from the casing (2) and is formed with a limited rotation portion (4), a right half shaft (5) is arranged on the right side of the casing (2), one end of the right half shaft (5) protrudes from the casing (2) and is formed with an outlet end shaft (6), a rotation stop sleeve (7) is mounted on the outer periphery of the outlet end shaft (6), one end of the rotation stop sleeve (7) is formed with a limited rotation portion (8), an outlet hole (9) is provided in the outlet end shaft (6), a semicircular outlet channel (10) connected to the outlet hole (9) is formed at the end of the outlet end shaft (6), and a semicircular outlet channel (11) connected to the semicircular outlet channel (10) is formed on the side of the limited rotation portion (8).

2. The electric bicycle barrel axle hub motor according to claim 1, characterized in that: The two side surfaces of the outlet end shaft (6) are respectively formed with limited rotation plane one (12), the anti-rotation sleeve (7) is provided with a mounting hole (13), and the two inner side surfaces of the mounting hole (13) are respectively formed with limited rotation plane two (14).

3. The electric bicycle barrel axle hub motor according to claim 1, characterized in that: The first rotation limiting portion (4) is U-shaped, and the second rotation limiting portion (8) is U-shaped.

4. The electric bicycle barrel axle hub motor according to claim 1, characterized in that: A fixing screw hole (15) is provided in the rotation limiting part (4), and a fixing screw hole (16) is provided in the outlet end shaft (6).

5. The electric bicycle barrel axle hub motor according to claim 1, characterized in that: A clamping seat (17) is installed on the outer periphery of the outlet end shaft (6), and a bearing (18) is arranged between the outlet end shaft (6) and the clamping seat (17).

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