CN213585461U

CN213585461U - Hub motor

Info

Publication number: CN213585461U
Application number: CN202023037356.2U
Authority: CN
Inventors: 赵明远
Original assignee: Changzhou Annaiya Rehabilitation Equipment Co ltd
Current assignee: Changzhou Annaiya Rehabilitation Equipment Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-06-29
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a wheel hub motor, planet wheel and planet carrier fixed connection, planet wheel and sun gear meshing, wheel hub encircle around rotor and planetary mechanism, and wheel hub rotationally installs on the fixed axle, and the internal tooth ring gear is fixed on wheel hub's inner peripheral surface, planet wheel and internal tooth ring gear meshing, the one end and the stator of power cord are connected, and the power cord passes and exposes in wheel hub's outside behind drawing the hole, still including the cover at fixed epaxial protection tube, be equipped with on the global of protection tube and communicate the mouth of stepping down in the protection tube hole, let the width of position mouthful be less than the oral area width of drawing down the hole, the power cord passes on the protection tube and lets after the position mouthful, when the protection tube is along the axial displacement of fixed axle, the power cord is promoted and the displacement by the protection tube, makes the partial lateral wall that. Can avoid the power cord to receive the in-wheel motor of damage in the installation.

Description

Hub motor

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to in-wheel motor.

Background

Generally, an in-wheel motor is composed of a fixed shaft, a stator, a rotor with a cavity, a sun gear, a planetary mechanism, a wheel hub, an internal tooth ring gear and other parts, and in order to enable the rotor of the motor to work, a power line on the motor needs to be led out from the interior of the motor so as to be connected with an external power supply.

As shown in fig. 1 and 2, generally, a fixed shaft 1 of the in-wheel motor is provided with a lead-out hole 1a, and after one end of a power line is connected with a stator, the other end of the power line passes through the lead-out hole 1a, so that a part of the power line is exposed to the outside of the in-wheel motor. However, since the contour of the outlet of the lead-out hole 1a is formed in an elliptical shape by drilling in a direction inclined to the axial direction of the fixed shaft from the circumferential surface of the fixed shaft 1 as a starting point during machining, the contour of the lead-out hole is often flat, and the contour 1b of the lead-out hole 1a has a certain degree of sharpness.

In the process of installing the hub motor, the fixing shaft needs to penetrate through a support for supporting the hub motor, when the fixing shaft penetrates through the support, the support extrudes the power line, and in the extruding process, as the power line does not adopt corresponding protection measures, the power line is easily cut by the contour part on the leading-out hole, and the adverse effect that the power line is cut is caused.

Disclosure of Invention

The utility model provides a can avoid the power cord to receive the in-wheel motor of damage in the installation.

The technical scheme for solving the technical problems is as follows:

the hub motor comprises a fixed shaft, a stator, a rotor with a cavity, a sun wheel, a planetary mechanism, a wheel hub, an internal tooth gear ring and a power line, wherein the fixed shaft is provided with a lead-out hole, the stator is fixed on the fixed shaft, the rotor is rotatably arranged on the fixed shaft and then surrounds the stator, the sun wheel comprises a body and a disc-shaped part arranged at one end of the body, the sun wheel is sleeved on the fixed shaft in a hollow manner, the disc-shaped part is fixedly connected with one end of the rotor, the planetary mechanism comprises a planet carrier and a planet wheel connected to the planet carrier, the planet carrier is matched with the fixed shaft, the planet wheel is fixedly connected with the planet carrier and meshed with the sun wheel, the wheel hub is arranged around the rotor and the planetary mechanism, the wheel hub is rotatably arranged on the fixed shaft, the internal tooth gear ring is fixed, the power cord passes and exposes in wheel hub's outside behind the hole of drawing forth, still including the protection tube of cover on the fixed axle, is equipped with the mouth of stepping down that communicates in the protection tube inner hole on the global of protection tube, lets the width of position mouth be less than the oral area width of drawing forth the hole, and after the power cord passed the position mouth of letting on the protection tube, when the protection tube moved along the axial of fixed axle, the power cord was promoted and the displacement by the protection tube, makes partly between the lateral wall of position mouth and the pore wall of drawing forth the hole of letting at last.

After the protection tube is sleeved on the fixed shaft, the width of the position opening is smaller than the width of the opening part of the lead-out hole, and the power line penetrates through the position opening on the protection tube, so that the power line is prevented from contacting with the outline of the lead-out hole, the protection tube is used for pushing the power line to move, the power line is prevented from being cut by the outline of the lead-out hole, and the protection effect is formed on the power line through the protection tube.

Drawings

FIG. 1 is a front view of a stationary shaft;

FIG. 2 is a cross-sectional view of a stationary shaft;

fig. 3 is a schematic sectional structure view of the hub motor of the present invention;

FIG. 4 is a schematic view of the sun gear;

fig. 5 is a front view of the protection tube;

fig. 6 is a side view of the protective tube;

fig. 7 is a sectional view of the protection tube;

reference numbers in the drawings:

1 is the fixed axle, draws forth hole 1a, and

profile

1b, 2 are the stator, and 3 are the rotor, and 31 is the extension, and 4 is first bearing, and 5 is the body, and 6 is the disk part, and 7 is the screw, and 8 is the planet carrier, and 9 is the planet wheel, and 10 is the wheel hub body, and 11 is the end cover, and 12 is the bearing, and 13 is the internal tooth ring gear, power cord 14, protection tube 15, big footpath hole 15a, path hole 15b, abdication mouth 16, support 17, fastener 18.

Detailed Description

As shown in fig. 1, the utility model discloses an in-wheel motor, including fixed axle 1, stator 2, rotor 3, sun gear, planetary mechanism, wheel hub, power cord 14, the protection tube 15 that has the cavity, be equipped with on the fixed axle 1 and draw forth hole 1a, stator 2 fixes on fixed axle 1, and rotor 3 rotationally sets up back on fixed axle 1, and rotor 3 encircles around stator 2, and rotor 3 is through first bearing 4 and fixed axle 1 swing joint.

As shown in fig. 1 and 2, the sun gear includes a body 5 and a disc member 6 disposed at one end of the body 5, the body 5 is a gear, the body 5 preferably adopts a cylindrical gear, and after the sun gear is sleeved on the fixed shaft 1, the disc member 6 is fixedly connected with one end of the rotor 3.

As shown in fig. 1, an extension portion 31 with one end located in the cavity is disposed on the side wall of the rotor 3, a screw hole is disposed on the extension portion 31, a groove is formed between the other end of the extension portion 31 and one end of the rotor, and after the disk-shaped member 6 is embedded in the groove, the disk-shaped member 6 of the sun gear is fixed with the extension portion 31 through a screw 7. The extension 31 is formed with a through hole in which the first bearing 4 is mounted. The other end of the rotor 3 is provided with a mounting hole in which the first bearing 4 is also mounted.

As shown in fig. 1 and 3, the planetary mechanism comprises a planet carrier 8 and planet wheels 9 connected to the planet carrier, the planet carrier 8 is matched with the fixed shaft 1, the planet wheels 9 are fixedly connected with the planet carrier 8, and the planet wheels 9 are meshed with the sun wheel.

The hub surrounds the rotor 3 and the planetary mechanism, and the hub 3 is rotatably provided on the fixed shaft 1. In this embodiment, the hub 3 is rotatably mounted on the fixed shaft through the bearing 12, the hub is composed of a hub body 10 and end covers 11 located at two ends of the hub body 10, two ends of the hub body 10 are fixedly connected with the end covers 11, and the end covers 11 are connected with the shaft 1 through the bearing 12.

The hub is characterized by further comprising an internal gear ring 13, wherein the internal gear ring 13 is fixed on the inner circumferential surface of the hub, the internal gear ring 13 is preferentially arranged on the inner circumferential surface of the hub body 10, and the planet gears 9 are meshed with the internal gear ring.

The protection tube 15 is sleeved on the fixed shaft 1, the protection tube 15 is in clearance fit with the fixed shaft 1, the circumference surface of the protection tube 15 is provided with a yielding port 16 communicated with an inner hole of the protection tube 15, the width of the yielding port 16 is smaller than the width of a mouth part of the leading-out hole 1a, after the power line 14 passes through the yielding port 16 on the protection tube 15, when the protection tube 15 moves along the axial direction of the fixed shaft 1, the power line 14 is pushed and displaced by the protection tube 15, and finally, a part of the power line 14 is located between the side wall of the yielding port 16 and the hole wall of the.

After the protection tube 15 is sleeved on the fixed shaft 1, because the width of the position-giving opening 16 is smaller than the width of the opening part of the leading-out hole 1a, and the power line 14 passes through the position-giving opening 16 on the protection tube 15, the power line 14 is prevented from contacting with the outline 1b of the leading-out hole 1a, the protection tube 15 is prevented from cutting the power line 14 by the outline 1b of the leading-out hole 1a in the process of pushing the power line 14 to move, and therefore the protection effect is formed on the power line 14 through the protection tube 15.

Preferably, the relief opening 16 extends to an axial end face of one end of the protection tube 15, and when the protection tube 15 moves along the axial direction of the fixing shaft 1, the power line 14 can be directly and passively entered into the relief opening 16 without matching the power line 14 with the relief opening 16, so that the protection tube has the advantage of convenient use. In this embodiment, the bit slot 16 preferably has a U-shaped structure.

The inner hole of the protection tube 15 preferentially adopts a step hole, in the embodiment, the large-diameter hole 15a of the step hole preferentially adopts a round hole, the small-diameter hole 15b of the step hole preferentially adopts a waist-shaped hole, and the waist-shaped hole has the advantages that after the protection tube 15 passes through the fixing shaft 1, the friction force between the small-diameter hole 15b and the fixing shaft 1 can be increased due to the matching relation between the small-diameter hole 15b on the protection tube 15 and the fixing shaft 1, so that the protection tube 15 is prevented from rotating, and the protection tube 15 is prevented from being cut by leading out the outline 1b of the hole 1a when the power line 14 is driven to move along the circumferential.

Still include support 17, because wheel hub 3 rotationally installs on fixed axle 1 through bearing 12, the one end of protection tube 15 with bearing 12 supports, and the other end of protection tube 15 supports with the one end of support 17, makes the axial terminal surface at protection tube 15 both ends all obtain spacingly like this, through the limiting displacement to protection tube 15 formation, its advantage is: on one hand, the distance between the side wall of the position opening 16 and the hole wall of the leading-out hole 1a can be prevented from being increased, the power line 14 is cut by the outline 1b of the leading-out hole 1a due to the fact that the moving space of the power line 14 is increased, on the other hand, the situation that the distance between the side wall of the position opening 16 and the hole wall of the leading-out hole 1a is too small due to the fact that the protection tube 15 excessively pushes the power line 14 to move can be avoided, and the power line 14 is squeezed between the side wall of the position opening 16 and the hole wall of the leading-out hole 1 a.

The utility model discloses still include fastener 18, fastener 18 is connected the back with fixed axle 1, and fastener 18 supports with the other end of support 17, and in this embodiment, fastener 18 preferentially adopts the nut, nut and 1 threaded connection of fixed axle, at the in-process of installation, rotates the nut, makes the support 17 removal of supporting with the nut, and support 17 promotes the protection tube 15 and removes, consequently in the installation, only need rotate the nut can, have the advantage of simple installation.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. The hub motor comprises a fixed shaft, a stator, a rotor with a cavity, a sun wheel, a planetary mechanism, a hub, an internal tooth gear ring and a power line, wherein the fixed shaft is provided with a lead-out hole, the stator is fixed on the fixed shaft, the rotor is rotatably arranged on the fixed shaft and surrounds the stator, the sun wheel comprises a body and a disc-shaped part arranged at one end of the body, the sun wheel is sleeved on the fixed shaft in a hollow manner, the disc-shaped part is fixedly connected with one end of the rotor, the planetary mechanism comprises a planet carrier and a planet wheel connected to the planet carrier, the planet carrier is matched with the fixed shaft, the planet wheel is fixedly connected with the planet carrier, the planet wheel is meshed with the sun wheel, the hub surrounds the rotor and the planetary mechanism, the hub is rotatably arranged on the fixed shaft, the internal, the one end and the stator of power cord are connected, the power cord passes and draws forth the outside that exposes in wheel hub behind the hole, its characterized in that still including the protection tube of cover on the fixed axle, be equipped with on the global of protection tube and communicate the mouth of stepping down in the protection tube hole, the width that lets the mouth is less than the oral area width of drawing forth the hole, after the power cord passed the protection tube and lets the mouth on, when the protection tube along the axial displacement of fixed axle, the power cord was promoted and the displacement by the protection tube, makes partly between the lateral wall that lets the mouth and the pore wall of drawing forth the hole of power cord at.

2. The in-wheel motor according to claim 1, further comprising a bearing, a bracket, wherein the wheel hub is rotatably mounted on the fixed shaft via the bearing, one end of the protection tube abuts against the bearing, and the other end of the protection tube abuts against one end of the bracket.

3. The in-wheel motor of claim 2, further comprising a fastener, wherein the fastener abuts against the other end of the bracket after the fastener is connected with the fixed shaft.

4. The in-wheel motor according to any one of claims 1 to 3, wherein the relief opening extends to an axial end face of one end of the protection tube.

5. The in-wheel motor of claim 4, wherein the relief opening is U-shaped.