CN219351436U

CN219351436U - Wiring structure of centrally-mounted motor of electric bicycle

Info

Publication number: CN219351436U
Application number: CN202320572918.8U
Authority: CN
Inventors: 周奇; 胡帅
Original assignee: Changzhou Hongbang New Energy Technology Co ltd
Current assignee: Changzhou Hongbang New Energy Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-07-14
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses a wiring structure of a centrally-mounted motor of an electric bicycle, which comprises a main body case, wherein the main body case comprises a stator and rotor part and a transmission part; a cooling cover is packaged outside one end wall of the stator and rotor part, an a threading hole is hollowed out in the end wall, and a b threading hole is hollowed out in one side of the transmission part; a wiring cover plate is arranged on one side of the main chassis along the length direction; two ends of a wiring channel in the wiring cover plate along the length direction are respectively communicated with the inner cavity of the cooling cover and the b threading hole; the problem of not unobstructed in its heat dissipation of optimization when solving the wiring problem of pencil.

Description

Wiring structure of centrally-mounted motor of electric bicycle

Technical Field

The utility model belongs to the field of centrally-mounted motors of bicycles.

Background

In the structure of the middle motor of the existing electric vehicle, in order to realize the light weight of the structure, a speed changer, a stator and a rotor and a controller are integrated in the same shell, so that the problems of disordered wire harness and flying wire winding are also caused; meanwhile, the transmission, the stator and the rotor and the controller are integrated in the same shell, so that the problem of unsmooth heat dissipation is also brought;

therefore, a corresponding wiring structure is required to be designed aiming at the highly integrated middle motor, and the problem that heat dissipation is not smooth while the wiring problem of a wire harness is solved.

Disclosure of Invention

The utility model aims to: in order to overcome the defects in the prior art, the utility model provides a wiring structure of a centrally installed motor of an electric bicycle, which solves the wiring problem of a wire harness and simultaneously optimizes the problem of unsmooth heat dissipation.

The technical scheme is as follows: in order to achieve the above object, the wiring structure of the mid-motor of the electric bicycle of the present utility model includes a main body casing including a stator and rotor portion and a transmission portion;

a cooling cover is packaged outside one end wall of the stator and rotor part, an a threading hole is hollowed out in the end wall, and a b threading hole is hollowed out in one side of the transmission part; a wiring cover plate is arranged on one side of the main chassis along the length direction; two ends of a wiring channel in the wiring cover plate along the length direction are respectively communicated with the inner cavity of the cooling cover and the b threading hole.

Further, a motor controller component is fixedly installed in the inner cavity of the cooling cover, and a sensor wire in the transmission part penetrates out of the b threading hole and is electrically connected with the motor controller component after penetrating through a wiring channel in the wiring cover plate along the length direction.

Further, the power line of the stator and rotor part penetrates out of the a threading hole and is electrically connected with the motor controller component.

Further, a heat conducting sheet is stuck to one side of the motor controller component (3) close to the cooling cover, and the heat conducting sheet is in heat conducting contact with the inner wall of the cooling cover.

Further, one end of the wiring cover plate, which is close to the b threading hole, forms an upward-raised joint installation shell, a rear lamp wire/speed measuring wire joint is installed in the joint installation shell, and a wire harness of the rear lamp wire/speed measuring wire joint passes through a wiring channel in the wiring cover plate and is electrically connected with the motor controller assembly.

Further, one end of the wiring cover plate, which is far away from the joint mounting shell, is clamped and communicated with the cooling cover through the spigot structure.

The beneficial effects are that: the wiring structure of this scheme has accomplished the integration of motor pencil and has been gone into in the wiring apron, makes the outside of this motor have "flying leads", avoids the winding phenomenon of flying leads in the past, when realizing that the standard is succinct to be wired, the wiring apron still plays the effect of "gas communication bridge", makes the inside of this motor form the gas circulation structure of a closed loop on whole, has strengthened holistic radiating homogeneity.

Drawings

FIG. 1 is a schematic diagram of the overall explosion structure of the wiring structure of the device;

FIG. 2 is a schematic diagram of the structure during assembly;

fig. 3 is a schematic diagram of the structure of the wiring cover plate and the cooling cover.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

The wiring structure of the electric bicycle central motor as shown in fig. 1 to 3, the basic structure comprises an integrated main body case 19 of the bicycle central motor, as shown in fig. 1, the right side part of the main body case 19 is a stator-rotor part 21, the left side part of the main body case 19 is a transmission part 18, the stator-rotor part 21 of the main body case 19 is internally provided with a stator-rotor of the motor, the transmission part 18 is internally provided with a planetary gear train speed changing unit, and in the working process, the output rotation speed of the rotor of the motor is transmitted to the output shaft 17 after being changed by the planetary gear train speed changing unit.

The wiring structure for the above-described base structure is as follows:

a cooling cover 4 is packaged outside one end wall 20 of the stator and rotor part 21, an a threading hole 22 is hollowed out in the end wall 20, and a b threading hole 16 is hollowed out in one side of the transmission part 18; a wiring cover plate 12 is arranged on one side of the main body case 19 along the length direction; the two ends of the wiring channel in the wiring cover plate 12 along the length direction are respectively communicated with the inner cavity of the cooling cover 4 and the b threading hole 16.

In order to ensure the smoothness of the threading process in the processing process, the a threading hole 22 and the b threading hole 16 are enlarged as much as possible, and the a threading hole 22 and the b threading hole 16 can be arranged in a form of air leakage after passing through the threads; the wiring cover plate 12 plays a role of a "gas communication bridge" under this structure; the inner cavity of the cooling cover 4, the wiring channel in the wiring cover plate 12 along the length direction, the b threading hole 16, the inner cavity of the transmission part 18, the inner cavity of the stator and rotor part 21 and the a threading hole 22 form a closed-loop gas channel which is communicated end to end in sequence, so that the heat exchange can be smoothly carried out in the communication relation among the inner cavity of the cooling cover 4, the wiring channel in the wiring cover plate 12 along the length direction, the b threading hole 16, the inner cavity of the transmission part 18, the inner cavity of the stator and rotor part 21 and the a threading hole 22 when the central motor operates, the overall heat uniformity is improved, and the local high-temperature phenomenon is inhibited.

In a specific wiring arrangement, a motor controller assembly 3 is fixedly arranged in the inner cavity of the cooling cover 4, a heat conducting sheet is stuck to one side, close to the cooling cover 4, of the motor controller assembly 3, and the heat conducting sheet is in heat conducting contact with the inner wall of the cooling cover (4), so that the heat dissipation performance is improved, and a sensor wire 9 (which can be a torsion sensor or a wire harness of a rotating speed sensor) in the transmission part 18 passes out of the b-threading hole 16, passes through a wiring channel in the wiring cover plate 12 along the length direction and is electrically connected with the motor controller assembly 3; the power line 2 of the stator and rotor part 21 penetrates out of the a threading hole 22 and is electrically connected with the motor controller component 3; the motor wire harness is integrated into the wiring cover plate, so that the motor has no flying wire outside, and the phenomenon of winding of the flying wire in the past is avoided.

In order to ensure the fixation and the protrusion of each wire connector needing external connection of the motor, the following structure is designed:

one end of the wiring cover plate 12, which is close to the b threading hole 16, forms an upward-raised joint installation shell 13, a rear lamp wire/speed measuring wire joint 14 is installed in the joint installation shell 13 through a joint lug fixing support 15, and a wire harness 10 of the rear lamp wire/speed measuring wire joint 14 passes through a wiring channel in the wiring cover plate 12 and is electrically connected with the motor controller assembly 3; one end of the wiring cover plate 12, which is far away from the joint mounting shell 13, is clamped and communicated with the cooling cover 4 through the spigot structure 11; the tail part of the cooling cover 4 is hollowed out and provided with a plug protruding hole 6, and all (power line plug/instrument line plug/steering handle line plug/power-off brake line plug 8) on the PCB 1 of the motor controller assembly 3 protrude from the plug protruding hole 6.

In the fastening mode: the wiring cover plate 12, the cooling cover 4 and the PCB 1 of the motor controller assembly 3 are detachably locked on the main case 19 by adopting a bolt structure.

The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims

1. The wiring structure of a centrally installed motor of an electric bicycle comprises a main body case (19), wherein the main body case (19) comprises a stator and rotor part (21) and a transmission part (18);

the method is characterized in that: a cooling cover (4) is packaged outside one end wall (20) of the stator and rotor part (21), an a threading hole (22) is hollowed out in the end wall (20), and a b threading hole (16) is hollowed out in one side of the transmission part (18); a wiring cover plate (12) is arranged on one side of the main body case (19) along the length direction; two ends of a wiring channel in the wiring cover plate (12) along the length direction are respectively communicated with an inner cavity of the cooling cover (4) and the b threading hole (16).

2. The wiring structure of a center motor of an electric bicycle according to claim 1, wherein: the motor controller assembly (3) is fixedly installed in the inner cavity of the cooling cover (4), and the sensor wire (9) in the transmission part (18) penetrates out of the b threading hole (16) and is electrically connected with the motor controller assembly (3) after penetrating through the wiring channel in the wiring cover plate (12) along the length direction.

3. The wiring structure of a center motor of an electric bicycle according to claim 2, wherein: the power line (2) of the stator and rotor part (21) penetrates out of the a threading hole (22) and is electrically connected with the motor controller assembly (3).

4. The wiring structure of a center motor of an electric bicycle according to claim 3, wherein: a heat conducting sheet is stuck to one side of the motor controller component (3) close to the cooling cover (4), and the heat conducting sheet is in heat conduction contact with the inner wall of the cooling cover (4).

5. The wiring structure of a center motor of an electric bicycle according to claim 4, wherein: one end of the wiring cover plate (12) close to the b threading hole (16) forms an upward bulge joint installation shell (13), a rear lamp wire/speed measuring wire joint (14) is installed in the joint installation shell (13), and a wire harness (10) of the rear lamp wire/speed measuring wire joint (14) penetrates through a wiring channel in the wiring cover plate (12) and is electrically connected with the motor controller assembly (3).

6. The wiring structure of a center motor of an electric bicycle according to claim 5, wherein: one end of the wiring cover plate (12) far away from the joint installation shell (13) is clamped and communicated with the cooling cover (4) through the spigot structure (11).