Hub motor with exhaust valve

Abstract

The utility model relates to a wheel hub motor with an exhaust valve, which comprises a stator and a rotor, the rotor is sleeved on the peripheral surface of the stator, the rotor comprises a magnetic conductive ring, the magnetic conductive ring comprises a middle part, the end part of the middle part extends towards the direction close to the interior of the motor to form a mounting part, and a mounting space is arranged between the mounting part and the stator. The exhaust valve body is mounted on the mounting part, and the end part of the exhaust valve body enters the mounting space; and the end part of the mounting part is connected with the end part of the middle part through the first inclined surface. The exhaust valve body is arranged, when air pressure is increased due to temperature rise in the operation process of the motor, the exhaust valve body is used for exhausting and reducing the air pressure in the motor, so that the air pressure in the motor is balanced with the outside, the motor is prevented from being damaged due to high pressure, and the service life of the motor is prolonged; by arranging the mounting part and the mounting space, the mounting of the exhaust valve body is ensured, the exhaust valve body can be directly mounted without adjusting the internal structure of the motor, and the mounting is simple and convenient.

Description

Technical Field

[0001] The utility model relates to a hub motor with an exhaust valve, belonging to the technical field of hub motors. Background Art

[0002] The wheel hub motor will emit a lot of heat during operation, making the air pressure inside the wheel hub motor shell higher than the atmospheric pressure. The high pressure inside the motor will cause damage to the motor and affect the performance of the motor. At present, conventional wheel hub motors will solve the problem of high pressure inside the motor by setting an exhaust valve. However, in the existing outer rotor wheel hub motor, in order to install the exhaust valve, it is usually necessary to adjust the internal structure of the motor to prevent interference with the installation of the exhaust valve, and then install the exhaust valve in the drum brake cavity or on the inner side of the disc brake disc mounting surface, which is very troublesome to install. Utility Model Content

[0003] The utility model aims to address the shortcomings of the prior art and to provide a hub motor with an exhaust valve on which an exhaust valve body can be directly installed without adjusting the internal structure of the motor.

[0004] To achieve the purpose, the technical solution adopted by the utility model is:

[0005] A hub motor with an exhaust valve comprises a stator and a rotor, wherein the rotor is sleeved on the outer circumferential surface of the stator, the rotor comprises a magnetic ring, the magnetic ring comprises a middle portion, the end of the middle portion extends toward the interior of the motor to form a mounting portion, there is a mounting space between the mounting portion and the stator, and also comprises an exhaust valve body, the exhaust valve body is mounted on the mounting portion, and the end of the exhaust valve body enters the mounting space.

[0006] As a further optimization of the above technical solution: the end of the mounting portion is connected to the end of the middle portion via a first inclined surface.

[0007] As a further optimization of the above technical solution: it also includes a rim, and the magnetic conductive ring is located inside the rim and is welded and fixed to the rim.

[0008] As a further optimization of the above technical solution: one end of the magnetic ring extends away from the interior of the motor to form a first fixing portion, and the end of the mounting portion continues to extend toward the interior of the motor to form a second fixing portion, and the first fixing portion and the second fixing portion are both provided with fixing holes, and also include a first end cover and a second end cover located on both sides of the magnetic ring, the radial dimension of the first end cover is larger than the radial dimension of the second end cover, the end of the screw passes through the first end cover and is fixed on the fixing hole of the first fixing portion; the end of the screw passes through the second end cover and is fixed on the fixing hole of the second fixing portion.

[0009] Compared with the prior art, the utility model is provided with an exhaust valve body. When the air pressure increases due to the increase in temperature during the operation of the motor, the exhaust valve body is used to exhaust air, reduce the air pressure inside the motor, balance the internal pressure of the motor with the external environment, avoid damage to the motor due to high pressure, extend the service life of the motor, and enable the electric vehicle to play the best efficiency and performance; by providing a mounting portion and an installation space, the installation of the exhaust valve body is guaranteed. At this time, there is no need to adjust the internal structure of the motor, and the exhaust valve body can be directly installed, which is simple and convenient to install; the fixing hole is located on the first fixing portion and the second fixing portion, which effectively avoids the limitation that the wall thickness of the magnetic ring must be greater than the aperture of the threaded hole, thereby reducing the radial wall thickness of the magnetic ring, achieving weight reduction, saving materials, reducing costs, and achieving lightweight motor; and increasing the space that the stator can occupy, and the driving force arm of the hub motor can be enlarged by increasing the outer diameter of the stator, thereby improving the motor power density and overload capacity, and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with the accompanying drawings and specific implementations. Figure 1-2 As shown, a hub motor with an exhaust valve includes a stator and a rotor, and the rotor is sleeved on the outer circumference of the stator. The rotor includes a magnetic ring 2 and a plurality of magnetic steels located on the inner circumference of the magnetic ring 2. The magnetic ring 2 includes an intermediate portion 21, and the end of the intermediate portion 21 extends toward the inner direction of the motor to form a mounting portion 22, and there is an installation space between the mounting portion 22 and the stator. It also includes an exhaust valve body 1, and the exhaust valve body 1 is mounted on the mounting portion 22, and the end of the exhaust valve body 1 enters the installation space. The exhaust valve body 1 is provided, and when the air pressure increases due to the increase in temperature during the operation of the motor, the exhaust valve body 1 is used to exhaust air, reduce the air pressure inside the motor, balance the internal pressure of the motor with the outside, avoid damage to the motor due to high pressure, extend the service life of the motor, and enable the electric vehicle to achieve the best efficiency and performance. By providing the mounting portion 22 and the mounting space, the installation of the exhaust valve body 1 is guaranteed. At this time, there is no need to adjust the internal structure of the motor, and the exhaust valve body can be directly installed, which is simple and convenient to install.

[0013] In the above technical solution: the end of the mounting portion 22 is connected to the end of the middle portion 21 through the first inclined surface 23 .

[0014] In the above technical solution: it also includes a rim 5, and the magnetic ring 2 is located inside the rim 5 and is welded and fixed to the rim 5.

[0015] In the above technical solution: one end of the magnetic ring 2 extends away from the inside of the motor to form a first fixing portion 24. The end of the mounting portion 22 continues to extend toward the inside of the motor to form a second fixing portion 25. The first fixing portion 24 and the second fixing portion 25 are both provided with fixing holes. It also includes a first end cover 3 and a second end cover 4 located on both sides of the magnetic ring 2. The radial dimension of the first end cover 3 is larger than the radial dimension of the second end cover 4. The end of the screw passes through the first end cover 3 and is fixed on the fixing hole of the first fixing portion 24; the end of the screw passes through the second end cover 4 and is fixed on the fixing hole of the second fixing portion 25. The fixing holes are located on the first fixing portion 24 and the second fixing portion 25, which effectively avoids the restriction that the wall thickness of the magnetic ring 2 must be larger than the aperture of the threaded hole, thereby reducing the radial wall thickness of the magnetic ring 2, achieving weight reduction, saving materials, reducing costs, and achieving lightweight motors; and increasing the space that the stator can occupy. By increasing the outer diameter of the stator, the driving force arm of the hub motor becomes larger, the power density and overload capacity of the motor are improved, and energy consumption is also reduced.

[0016] The preferred specific embodiments of the present utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should fall within the protection scope of the present utility model.

Claims

1. A hub motor with an exhaust valve, comprising a stator and a rotor, wherein the rotor is sleeved on the outer circumference of the stator, and the rotor comprises a magnetic conductive ring (2), characterized in that The magnetic conductive ring (2) comprises a middle portion (21), the end of the middle portion (21) extends toward the interior of the motor to form a mounting portion (22), there is a mounting space between the mounting portion (22) and the stator, and also comprises an exhaust valve body (1), the exhaust valve body (1) is mounted on the mounting portion (22), and the end of the exhaust valve body (1) enters the mounting space.

2. A hub motor with an exhaust valve according to claim 1, characterized in that The end of the mounting portion (22) is connected to the end of the middle portion (21) via a first inclined surface (23).

3. The wheel hub motor with an exhaust valve according to claim 1, characterized in that It also comprises a rim (5), wherein the magnetic conductive ring (2) is located inside the rim (5) and is fixed to the rim (5) by welding.

4. The wheel hub motor with an exhaust valve according to claim 1, characterized in that One end of the magnetic conductive ring (2) extends in a direction away from the interior of the motor to form a first fixing portion (24), and the end of the mounting portion (22) continues to extend in a direction close to the interior of the motor to form a second fixing portion (25). The first fixing portion (24) and the second fixing portion (25) are both provided with fixing holes. The magnetic conductive ring (2) further comprises a first end cover (3) and a second end cover (4) located on both sides of the magnetic conductive ring (2). The radial dimension of the first end cover (3) is greater than the radial dimension of the second end cover (4). The end of the screw passes through the first end cover (3) and is fixed to the fixing hole of the first fixing portion (24); the end of the screw passes through the second end cover (4) and is fixed to the fixing hole of the second fixing portion (25).

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