CN210760232U - An electric wheel with in-wheel vibration damping function - Google Patents

Abstract

The utility model relates to the field of automotive technology, especially, relate to an electronic round that possesses in-wheel damping function. Including tire 1, rim 2 and motor, tire 1 sets up in the 2 outsides of rim, its characterized in that: the motor comprises a rotor and a stator 12, wherein the rim 2 is of a cylindrical cavity structure with an opening formed in one side, the rotor is arranged on the opening side of the rim 2, the closed end of the rotor is inserted into and fixed with the cavity of the rim 2, and one end of the stator 12 is inserted into the cavity of the rotor and can be fixed in the cavity of the rotor in a relatively rotating manner; one end of the stator is provided with a steering knuckle 13, and one side of the steering knuckle 13 is provided with a suspension device. Greatly relieves the road surface impact load borne by the hub motor. The interior of the motor is combined in a modularized mode, and the motor has the characteristics of reasonable structure, stable performance and convenience in maintenance.

Description

An electric wheel with in-wheel vibration damping function

technical field

The utility model relates to the technical field of automobiles, in particular to an electric wheel with in-wheel vibration damping function.

Background technique

The in-wheel motor is installed in the wheel, and the combination of the in-wheel motor and the wheel forms an electric wheel. The electric wheel hub is driven from the wheel-side motor in the last century. Due to the increase of the unsprung mass due to the addition of the motor, the stable and efficient operation of the motor has always been the focus of attention. The current electric wheel generally adopts the unilateral vibration damper, and the in-wheel motor in the electric wheel has gradually developed the current one-way vibration damping method from the previous rigid connection method. For example, the Chinese special bulletin number is: CN101638052B, an electric wheel with in-wheel vibration damping function. This in-wheel motor consists of a hub shell, a motor, a floating brake, and a suspension. The right side of the motor relies on a shock absorber to absorb and restore the belt of the body. Given vibration, tires, rims, motors, and reducers are arranged at one time and coaxially arranged. The main shaft is connected to the hub shell through bearings. The motor transmits power to the rim through bolts to achieve driving. The hub motor of this electric vehicle has an output High speed, space saving, compact and beautiful design. However, due to the rigid connection between the components, the uneven force and large friction will be caused, so it is very easy to generate noise, heat inside the hub and wear, and the service life is shortened. Even maintenance, the precision and performance of the hub motor will gradually decline. .

Utility model content

The purpose of the present invention is to overcome the deficiencies of the prior art, to meet the actual needs, and to provide an electric wheel with an in-wheel vibration damping function.

In order to achieve the purpose of the present invention, the technical solution adopted in the present invention is: an electric wheel with in-wheel vibration damping function, comprising a tire 1, a rim 2 and a motor, the tire 1 is arranged on the outside of the rim 2, and the motor includes A rotor and a stator 12, the rim 2 is a cylindrical cavity structure with an opening on one side, a rotor is provided on the open side of the rim 2, and the closed end of the rotor is inserted into the cavity of the rim 2 and fixed with it, so An annular hydraulic bush 11 is arranged between the stator 12 and the axle 7, one end of the stator 12 is inserted into the cavity of the rotor and can be relatively rotatably fixed in the cavity of the rotor; one end of the stator is provided with a steering knuckle 13, A suspension device is provided on one side of the steering knuckle 13 .

The rotor includes a rotor shell 8 and a rotor side disk 5. The rotor shell 8 is a cylindrical cavity structure with openings on both sides. The opening on the cavity side of the rotor shell 8 is inserted into the rim 2. The matching rotor side disk 5, the rim side disk 3 and the center drive disk 4 are arranged between the rotor side disk 5 and the rim 2, and the rotor side disk 5 passes through the rim side disk 3 and the center drive disk 4 and the rim 2. fixed.

The upper and lower ends of the rim side disk 3 and the center drive disk 4 are provided with latches, and the corresponding positions of the center drive disk 4 are provided with slots; the rotor side disk 5 is opposite to the center drive disk 4. The left and right ends of the side are provided with latches, and the corresponding positions of the central drive disc 4 are provided with slots; the center circular array of the rim side disc 3 has a plurality of bolt holes, 2 are fixedly connected by the first bolt 18 .

The stator 12 includes a main body part and an extension part, the diameter of the extension part is smaller than that of the main body part, a horizontal through hole is arranged in the main body part and the extension part, and a matching annular hydraulic pressure is arranged in the through hole. The bushing 11 plays the role of vibration damping in the wheel. The horizontal center of the annular hydraulic bushing 11 is provided with an axle 7 running through both sides thereof. The other end of the axle 7 can be relatively rotatably limited on the rotor side disk 5 by being fixed to it by a nut.

A seat hole is provided in the center of the rotor-side disk 5 corresponding to the extension portion of the stator 12 , a bearing 6 is arranged in the seat hole, and the axle 7 is inserted into and matched with the bearing 6 .

An annular rotor cover 9 is provided at the opening of the rotor shell 8 on the side where the stator 12 is inserted, and the stator 12 is inserted into the rotor shell 8 through the rotor cover 9; There is an annular rotor sealing sleeve 10 , and the rotor cover 9 and the rotor sealing sleeve 10 are both fixed on the rotor casing 8 by third bolts 20 .

The suspension device includes a small shock absorber 17, an upper swing arm 16, a steering knuckle 13, a lower swing arm 14, a large shock absorber 15, a pin shaft 24, and a balance rod 25; from the outside to the inside, the steering knuckle 13 passes through bolts 20 is fastened to the extension piece of the stator 12, the axle 7 passes through the center hole of the steering knuckle 13 and is positioned axially through the nut 21, the upper end of the steering knuckle 13 is connected to the lower end of the small shock absorber 17 to the left and the upper end of the upper swing arm 16 to the right. The left end, the three form a rotating pair, the upper end of the small shock absorber 17 and the body are connected together by ball joints, the right end of the upper swing arm 16 is connected with the frame to form a rotating pair, and the lower end of the steering knuckle 13 is connected to the left through the pin shaft 24 The left end of the lower swing arm 14 and the right end of the balance bar 25 form a rotating pair, the right end of the lower arm 14 and the balance bar 25 are connected to the frame through a rotating pair, and the lower end of the large shock absorber 15 and the lower end of the swing arm 14 form a rotating pair. The upper end is hinged through a ball connected to the frame.

The rotor shell 8 and the rotor side disk 5 are fixedly connected by second bolts 19 .

The beneficial effects of the present invention are:

1. The connection between the motor and the sprung mass and the unsprung mass respectively plays a role in reducing the vibration of the motor;

2. Greatly relieve the road impact load on the wheel hub motor. The interior of the motor is combined in a modular way, which has the characteristics of reasonable structure, stable performance and convenient maintenance.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and implementation cases.

Fig. 1 is the sectional structure schematic diagram of the present utility model;

Figure 2 is a schematic diagram of the overall explosion;

Figure 3, Figure 4, Figure 5 are partial exploded schematic diagrams of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

See Figures 1-5.

The invention discloses an electric wheel with in-wheel vibration damping function, comprising a tire 1, a rim 2 and a motor, the tire 1 is arranged outside the rim 2, the motor includes a rotor and a stator 12, and the rim 2 is a The side is provided with an open cylindrical cavity structure, the open side of the rim 2 is provided with a rotor, the closed end of the rotor is inserted into the cavity of the rim 2 and fixed to it, and a ring is arranged between the stator 12 and the axle 7 A hydraulic bush 11, one end of the stator 12 is inserted into the cavity of the rotor and can be relatively rotatably fixed in the cavity of the rotor; one end of the stator is provided with a steering knuckle 13, and one side of the steering knuckle 13 is provided with a suspension device .

The rotor includes a rotor shell 8 and a rotor side disk 5. The rotor shell 8 is a cylindrical cavity structure with openings on both sides. The opening on the cavity side of the rotor shell 8 is inserted into the rim 2. The matching rotor side disk 5, the rim side disk 3 and the center drive disk 4 are arranged between the rotor side disk 5 and the rim 2, and the rotor side disk 5 passes through the rim side disk 3 and the center drive disk 4 and the rim 2. fixed.

The upper and lower ends of the rim side disk 3 and the center drive disk 4 are provided with latches, and the corresponding positions of the center drive disk 4 are provided with slots; the rotor side disk 5 is opposite to the center drive disk 4. The left and right ends of the side are provided with latches, and the corresponding positions of the central drive disc 4 are provided with slots; the center circular array of the rim side disc 3 has a plurality of bolt holes, 2 are fixedly connected by the first bolt 18 .

The stator 12 includes a main body part and an extension part, the diameter of the extension part is smaller than that of the main body part, a horizontal through hole is arranged in the main body part and the extension part, and a matching annular hydraulic pressure is arranged in the through hole. The bushing 11 plays the role of vibration damping in the wheel. The horizontal center of the annular hydraulic bushing 11 is provided with an axle 7 running through both sides thereof. The other end of the axle 7 can be relatively rotatably limited on the rotor side disk 5 by being fixed to it by a nut.

A seat hole is provided in the center of the rotor-side disk 5 corresponding to the extension portion of the stator 12 , a bearing 6 is arranged in the seat hole, and the axle 7 is inserted into and matched with the bearing 6 .

An annular rotor cover 9 is provided at the opening of the rotor shell 8 on the side where the stator 12 is inserted, and the stator 12 is inserted into the rotor shell 8 through the rotor cover 9; There is an annular rotor sealing sleeve 10 , and the rotor cover 9 and the rotor sealing sleeve 10 are both fixed on the rotor casing 8 by third bolts 20 .

The suspension device includes a small shock absorber 17, an upper swing arm 16, a steering knuckle 13, a lower swing arm 14, a large shock absorber 15, a pin shaft 24, and a balance rod 25; from the outside to the inside, the steering knuckle 13 passes through bolts 20 is fastened to the extension piece of the stator 12, the axle 7 passes through the center hole of the steering knuckle 13 and is positioned axially through the nut 21, the upper end of the steering knuckle 13 is connected to the lower end of the small shock absorber 17 to the left and the upper end of the upper swing arm 16 to the right. The left end, the three form a rotating pair, the upper end of the small shock absorber 17 and the body are connected together by ball joints, the right end of the upper swing arm 16 is connected with the frame to form a rotating pair, and the lower end of the steering knuckle 13 is connected to the left through the pin shaft 24 The left end of the lower swing arm 14 and the right end of the balance bar 25 form a rotating pair, the right end of the lower arm 14 and the balance bar 25 are connected to the frame through a rotating pair, and the lower end of the large shock absorber 15 and the lower end of the swing arm 14 form a rotating pair. The upper end is hinged through a ball connected to the frame.

The rotor shell 8 and the rotor side disk 5 are fixedly connected by second bolts 19 .

The vibration-damping electric wheel with vibration-damping function of the present invention is shown in Figure 1, which includes a drive device, a suspension device and a vibration-damping device. The specific structural arrangement is as follows:

The driving device is composed of tire 1, rim 2 and motor. From the inside to the outside, the stator is fixed on the stator extension 12, the annular hydraulic bushing 11 is accommodated in the center hole of the stator and then indirectly fixed with the axle 7, and the rotor is fixed in the rotor shell 8, and the rotor shell 8 is fixed by bolts 19. Fix the rotor side disks 5 together, and at the same time place a bearing 6 in the seat hole of the rotor side disk 5 to connect with the axle 7. The rotor side disk 5 transmits the torque to the center drive disk 4 through the slider connection, and the center drive disk 4 Similarly, after passing through the slider, the up and down jumps are filtered and transmitted to the rim side plate 3. The rim side plate 3 and the rim 2 are rigidly connected together by bolts 18, and the smooth output of power to the wheel is completed at this time;

As shown in the figure, the suspension device is composed of a small shock absorber 17 , an upper swing arm 16 , a steering knuckle 13 , a lower swing arm 14 , a large shock absorber 15 , a pin shaft 24 and a balance rod 25 . From the outside to the inside, the steering knuckle 13 is fastened to the stator extension 12 through the bolt 20, the axle 7 is axially positioned through the nut 21 through the central hole of the steering knuckle 13, and the upper end of the steering knuckle 13 is connected to the left with a small shock absorber The lower and right ends of 17 are connected to the left end of the upper swing arm 16, and the three form a rotating pair. The upper end of the small shock absorber 17 is connected to the body through a ball joint, and the right end of the upper swing arm 16 is connected to the frame to form a rotating pair. The lower end of the joint 13 is connected to the left end of the lower swing arm 14 and the right end of the balance rod 25 through the pin shaft 24 to form a rotating pair. The upper end of the rotating pair formed with the lower swing arm 14 is connected to the frame through a ball joint;

The vibration damping device consists of three technical routes: firstly, the first route consisting of tire 1, rim 2, rim side disk 3, center drive disk 4, and rotor side disk 5. The vibration is directly transmitted by the wheel 1 to the rim 2, and the rim side disc 3 receives the vibration from the rim 2, and the three are fixed together by the bolt 18, so that the vibration is transmitted to the center drive disc 4, the rim side disc 3 and the rotor side The discs 5 are connected to each other through the sliders of the central drive disc 4. At this time, the central drive disc 4 will filter vibration through the sliding pair;

Next, the second route consisting of the axle 7 , the hydraulic bush 11 , the stator and its extension 12 . The vibration of the axle 7, due to the built-in hydraulic bushing 11 in the central hole of the stator, even if the stator and its extension 12 are fixed on the shaft, the vibration is filtered;

Finally, it consists of a small shock absorber 17 , an upper swing arm 16 , a steering knuckle 13 , a lower swing arm 14 , a large shock absorber 15 , a pin shaft 24 , and a balance rod 25 . The vibration caused by the impact of the body and its load on the uneven road is directly transmitted to the large and small shock absorbers through the ball joint. The damping in the shock absorber absorbs the impact energy, and the spring quickly restores the car body to its original state. At this time, the small shock absorber The lower end transmits the vibration to the upper end of the steering knuckle through the stud bolts, and the large vibration damping transmits the vibration to the lower swing arm through the stud bolts, and the lower swing arm can rotate relative to the steering gear within a certain range.

The vibration damping device is divided into two parts in the present invention:

The first part: filter the vibration brought by the axle to the stator of the motor, and isolate the vibration with an annular hydraulic bushing buffer between the stator and the axle, at this time, the connection between the motor and the unsprung mass is realized;

The second part: filter the vibration of the body, the upper end of the large shock absorber is connected with the frame to form a ball joint, the lower end is connected with the lower swing arm to form a rotating pair, and the upper end of the small shock absorber is connected with the body to form a ball joint, and the lower end is connected with the upper swing arm to form a ball joint Connected to form a rotating pair, at this time, the motor realizes the connection with the sprung mass.

The working process of the present invention is as follows:

When a certain driving current is given to the hub motor, the outer rotor drives the cross-slide mechanism to transmit the torque to the wheel through the rim side disk, the center drive disk and the rotor side disk and isolate the wheel from up and down. After passing through a special road, when the body vibrates up and down, the large and small vibrations are reduced and the motion is filtered and the original state is quickly restored. When the axle vibrates, the hydraulic bushing absorbs the vibration transmitted to the stator.

While satisfying the transmission of motor torque, the invention realizes the isolation of the up and down vibration of the wheel, the rotor side disc seat hole is also provided with a bearing connection, and the friction between the stationary part axle and the side disc of the rotating part is less, so that the rotor rotates during operation. The operation is more stable and the service life of the motor is longer; the connection between the motor and the unsprung mass is realized, the stator is fastened on the stator extension part and the bushing is accommodated in the center hole of the stator, so that the noise during operation is lower; the motor and the unsprung mass are realized. The sprung mass is connected, and the left position of the small shock absorber and the right position of the balance bar make the overall force of the steering knuckle more balanced. The modularization of the overall structure is more reasonable, and it is only necessary to assemble from the inside out according to the modularization during installation.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. All equivalent transformations made by using the contents of the description and drawings of the present invention or directly or indirectly applied in the relevant technical fields are similarly included in the present invention. The invention is within the scope of patent protection.

Claims (8)

1. The utility model provides an electronic wheel that possesses in-wheel damping function, includes tire (1), rim (2) and motor, tire (1) sets up in rim (2) outside, its characterized in that: the motor comprises a rotor and a stator (12), wherein the rim (2) is of a cylindrical cavity structure with an opening formed in one side, the rotor is arranged on the opening side of the rim (2), the closed end of the rotor is inserted into and fixed with a cavity of the rim (2), an annular hydraulic bushing (11) is arranged between the stator (12) and the wheel shaft (7), and one end of the stator (12) is inserted into the cavity of the rotor and can be fixed in the cavity of the rotor in a relatively rotating mode; one end of the stator is provided with a steering knuckle (13), and one side of the steering knuckle (13) is provided with a suspension device.

2. The electric wheel with in-wheel vibration reduction function according to claim 1, characterized in that: the rotor comprises a rotor shell (8) and a rotor side disc (5), the rotor shell (8) is provided with an open-ended cylindrical cavity structure for both sides, the rotor shell (8) is inserted into the opening of the cavity side of the rim (2) and is provided with the rotor side disc (5) matched with the rotor shell, a rim side disc (3) and a central transmission disc (4) are arranged between the rotor side disc (5) and the rim (2), and the rotor side disc (5) is fixed with the rim (2) through the rim side disc (3) and the central transmission disc (4).

3. The electric wheel with in-wheel vibration reduction function according to claim 2, characterized in that: the upper end and the lower end of the opposite side of the rim side disc (3) and the central transmission disc (4) are provided with bolts, and the position of the central transmission disc (4) corresponding to the central transmission disc is provided with a slot; the left end and the right end of the opposite side of the rotor side disc (5) and the central transmission disc (4) are provided with bolts, and the position of the central transmission disc (4) corresponding to the bolt is provided with a slot; the circular array in rim side dish (3) center has a plurality of bolt holes, rim side dish (3) and rim (2) are through first bolt (18) fixed connection.

4. The electric wheel with in-wheel vibration reduction function according to claim 1, characterized in that: the stator (12) comprises a main body part and an extension part, the diameter of the extension part is smaller than that of the main body part, a through hole which penetrates horizontally is formed in the main body part and the extension part, an annular hydraulic bushing (11) matched with the through hole is arranged in the through hole and plays a role in damping vibration in a wheel, a wheel shaft (7) penetrating through two sides of the annular hydraulic bushing (11) is arranged in the horizontal center of the annular hydraulic bushing, threads are arranged at one end of the wheel shaft (7), a threaded end is arranged to penetrate through a steering knuckle (13) and fixed with the steering knuckle through a nut, and the other end of the wheel shaft (7) can be limited on the rotor side disc (5).

5. The electric wheel with in-wheel vibration reduction function according to claim 4, characterized in that: the center of the position of the rotor side disc (5) corresponding to the extension part of the stator (12) is provided with a seat hole, a bearing (6) is arranged in the seat hole, and the wheel shaft (7) is inserted into the bearing (6) and matched with the bearing.

6. The electric wheel with in-wheel vibration reduction function according to claim 4, characterized in that: an annular rotor cover (9) is arranged at an opening of the rotor shell (8) where the stator (12) is inserted, and the stator (12) penetrates through the rotor cover (9) and is inserted into the rotor shell (8); an annular rotor sealing sleeve (10) is arranged between the rotor cover (9) and the stator main body part, and the rotor cover (9) and the rotor sealing sleeve (10) are fixed on the rotor shell (8) through third bolts (20).

7. The electric wheel with in-wheel vibration reduction function according to claim 1, characterized in that: the suspension device comprises a small vibration absorber (17), an upper swing arm (16), a steering knuckle (13), a lower swing arm (14), a large vibration absorber (15), a pin shaft (24) and a balance rod (25); the steering knuckle (13) is tightly nailed on an extension piece of a stator (12) through a bolt (20), an axle (7) penetrates out of a center hole of the steering knuckle (13) and is axially positioned through a nut (21), the upper end of the steering knuckle (13) is connected with the lower end of a small shock absorber (17) at the left side and the left end of an upper swing arm (16) at the right side to form a revolute pair, the upper end of the small shock absorber (17) is connected with a vehicle body through a ball joint, the right end of the upper swing arm (16) is connected with a vehicle frame to form a revolute pair, the lower end of the steering knuckle (13) is connected with the left end of a lower swing arm (14) through a pin shaft (24) at the left side and is connected with a right balance rod (25) to form a revolute pair, the right ends of the lower swing arm (14) and the balance rod (25) are connected with the vehicle frame through the revolute pair, and the lower end of a large shock absorber.

8. The electric wheel with in-wheel vibration reduction function according to claim 2, characterized in that: the rotor shell (8) and the rotor side disc (5) are fixedly connected through a second bolt (19).

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