CN216530990U - Hub motor with rotating pressure-changing type detection device - Google Patents

Abstract

The utility model provides a hub motor with a rotation-to-pressure detection device, and belongs to the technical field of motors. It has solved the poor problem of speed sensor use reliability among the current in-wheel motor. The in-wheel motor includes rotor shell and stator assembly, the end cover is installed to rotor shell one end, resolver includes rotor ring and stator ring, rotor ring demountable installation is on the end cover, stator ring demountable installation is on the stator assembly, the stator ring cover is established outside the rotor ring, the rotor ring of installing on the end cover can follow rotor shell synchronous rotation, and stator ring demountable installation keeps static for rotor ring and rotor shell on the stator assembly, the rotor ring rotates the in-process, can produce a quantitative voltage signal between rotor ring and the stator ring, need not external circuit can normally work on stator or rotor. This in-wheel motor with rotatory variable pressure formula detection device can guarantee to use the reliability higher.

Description

Hub motor with rotating pressure-changing type detection device

Technical Field

The utility model belongs to the technical field of motors, and relates to a hub motor with a rotary pressure-changing type detection device.

Background

The wheel hub motor technology is also called as in-wheel motor technology, and the most important characteristic of the wheel hub motor technology is that a power device, a transmission device and a braking device are all integrated into a wheel hub, so that the mechanical part of an electric vehicle is greatly simplified.

The existing hub motors generally include: the wheel rim, the rotor, the motor controller, the stator and the motor winding control the sequence and time of the energization of the motor winding through the motor controller according to signals, so that a rotating magnetic field is generated, the rotor is driven to rotate through the magnetic field subsequently, and then the vehicle is driven to move forwards or backwards.

For guaranteeing the speed of a motor vehicle that the driver can know the driving in real time, generally can install detection device on motor stator, be hall sensor usually to set up the permanent magnet in the rotor, rotate through the rotor and drive the permanent magnet and rotate, and produce the pulse through pivoted permanent magnet and hall sensor interact, thereby reachs in-wheel motor rotational speed, and then reachs the speed of a motor vehicle when the vehicle goes.

But a hall sensor for detecting wheel hub motor rotational speed need the circular telegram just can carry out detection achievement, assembly personnel just need to be connected hall sensor and the power supply in the wheel hub motor through the wire when assembling, thereby guarantee hall sensor can normal use, nevertheless no matter wheel hub motor self vibrates or the driving in-process jolts for a long time during operation, all cause hall sensor and wire very probably, wire and power supply contact failure, thereby cause the unable effective wheel hub motor rotational speed that detects of hall, use the reliability relatively poor.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a hub motor with a rotary-to-pressure detection device, which aims to solve the technical problems that: how to improve the reliability of the use of the detection device.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides an in-wheel motor with change pressure formula detection device soon, in-wheel motor include the rim and install the stator assembly in the rim, install the end cover on the rim, its characterized in that, detection device are including setting up the resolver encoder between end cover and stator assembly, and this encoder includes rotor ring and stator ring, rotor ring demountable installation is on the end cover inner wall, the stator ring with the stator assembly can be dismantled and be connected, just the stator ring cover is established outside the rotor ring.

In the hub motor with the rotary variable-voltage detection device, the hub motor comprises a rim and a stator assembly arranged in the rim, an end cover is arranged at one end of the rim, the detection device comprises a rotary transformer encoder arranged between the end cover and the stator assembly, the encoder comprises a rotor ring and a stator ring, the rotor ring is detachably arranged on the end cover, the stator ring is detachably arranged on the stator assembly, the stator ring is sleeved outside the rotor ring, in the using process, the hub motor is electrified to enable the rim to rotate, the rotor ring arranged on the end cover can synchronously rotate along with the rim, the stator ring is detachably arranged on the stator assembly and is kept static relative to the rotor ring and the rim, the rotor ring continuously rotates in the stator ring, and in the rotating process of the rotor ring, a certain amount of voltage signals can be generated between the rotor ring and the stator ring (the part of voltage signals are equal to the electrification of a Hall sensor and are generated by the interaction between the Hall sensor and a permanent magnet in the stator assembly Pulse signals), compared with a Hall sensor in the prior art, the hub motor with the rotary variable-voltage detection device can normally work without an external circuit on a stator or a rotor, the condition that poor contact of a lead is caused by vibration or bumping of the hub motor during driving can be effectively avoided, and the speed measurement reliability is further ensured; in addition, detection device installs between stator assembly and end cover, can effectively dodge outside magnetic field when the stator assembly circular telegram, avoids this part magnetic field to disturb detection device's detection, guarantees to test the speed more accurately.

In foretell in-wheel motor that has rotatory variable pressure formula detection device, it is annular installation department to have on the end cover inner wall, the rotor ring cup joints outside the installation department, the constant head tank has been seted up on the installation department lateral wall, the protruding location convex part that forms on the rotor ring inside wall, location convex part joint is in the constant head tank.

Integrated into one piece has on the inner wall of end cover to be annular installation department, has seted up the constant head tank on the lateral wall of installation department, and rotor ring among the detection device cup joints to be fixed outside the installation department, and the arch forms the location convex part on the inside wall of rotor ring, and this location convex part joint is in the constant head tank to make the end cover rotate the in-process along with the rim and can drive the rotor ring together and carry out synchronous rotation, guarantee detection device's the precision of testing the speed.

In the hub motor with the rotary variable-pressure detection device, the edge of one end of the installation part, which is far away from the inner wall of the end cover, is provided with a plurality of fixing holes along the circumferential direction, and the rotor ring is screwed into the fixing holes through bolts so that the rotor ring is abutted against the inner wall of the end cover.

The one end edge that the end cover was kept away from to the installation department has seted up a plurality of fixed orifices along the hoop of self, the rotor ring cup joints back outside the installation department, the assembler can twist in the fixed orifices through the bolt, twist the in-process, the head of bolt can constantly upwards promote the one end that the end cover was kept away from to the rotor ring, and finally make the rotor ring support tightly on the end cover by a plurality of bolts, guarantee the stability of rotor ring installation, and then guarantee detection device's reliability in utilization and detection accuracy nature, and follow-up if the rotor ring also can guarantee when breaking down that the dismouting is changed more convenient.

In the hub motor with the rotary variable-pressure detection device, one end of the stator assembly, which is close to the end cover, is provided with the first mounting hole along the circumferential direction, the stator ring is provided with the second mounting hole along the circumferential direction, and the stator ring penetrates through the second mounting hole through the bolt and is screwed into the first mounting hole for fixing.

One end of the stator assembly, which is close to the end cover, is provided with a plurality of first mounting holes along the circumferential direction, the stator ring is provided with a plurality of second mounting holes along the circumferential direction, the stator ring sequentially penetrates through the second mounting holes through bolts and is screwed into the first mounting holes, and therefore stability of the stator ring is guaranteed when the stator ring is installed on the stator assembly on the premise that the detachable is guaranteed, and reliability of speed measurement of the detection device is guaranteed.

In the hub motor with the rotary variable-pressure detection device, each mounting hole II is in a long strip shape.

Each second mounting hole is long-strip-shaped, so that the stator ring can be properly rotated when the stator ring is mounted under the condition that a certain first mounting hole is not aligned with the second mounting hole, and each first mounting hole corresponds to the second mounting hole.

Compared with the prior art, the rotary variable-pressure detection device for the hub motor has the advantages that:

one, among this in-wheel motor with rotatory variable pressure formula detection device, detection device's rotor ring demountable installation is on in-wheel motor's end cover, detection device's stator ring demountable installation is on in-wheel motor's stator assembly, and the stator ring cover is established outside the rotor ring, the rotor ring rotates the in-process, can produce a certain amount of voltage signal between rotor ring and the stator ring, need not external circuit on stator or rotor and can normally work, jolt the condition that causes wire contact failure when can effectively avoiding in-wheel motor vibration or driving, and then guarantee to detect the reliability.

And secondly, the rotor ring is sleeved and fixed outside the mounting part of the end cover, and a positioning convex part formed by the inner side wall of the rotor ring is clamped into a positioning groove formed in the outer side wall of the mounting part, so that the end cover can drive the rotor ring to synchronously rotate along with the rotation of the rim, and the speed measurement precision of the detection device is ensured.

Third, the rotor ring cup joints outside the installation department the back, can twist the installation department through the bolt and set up in the fixed orifices, at the wrong in-process, the head of bolt can constantly upwards promote the one end that the end cover was kept away from to the rotor ring for the rotor ring is supported tightly on the end cover by a plurality of bolts, guarantees the stability of rotor ring installation, and then guarantees detection device's use reliability and detection accuracy nature, and follow-up also can guarantee that the dismouting is changed more conveniently if the rotor ring breaks down.

Fourthly, the stator ring sequentially penetrates through a second mounting hole formed in the stator ring through a bolt and is screwed into a first mounting hole formed in the stator assembly, so that the stator ring is installed on the stator assembly on the premise of ensuring the detachable performance to ensure the stability, and the speed measuring reliability of the detection device is ensured.

And fifthly, the mounting hole II is in a long strip shape, so that the stator ring can be properly adjusted when being mounted.

Drawings

Fig. 1 is a schematic structural view of the hub motor with the rotation voltage variation type detection device.

Fig. 2 is a sectional view of the in-wheel motor with a rotation transformer type detecting device and a partially enlarged view thereof.

Fig. 3 is a schematic structural view of the end cap.

Fig. 4 is a schematic view of the structure of the rotor ring.

FIG. 5 is a schematic view of a stator ring structure

Fig. 6 is a schematic structural view of the stator assembly.

In the figure, 1, the rim; 1a, an end cover; 1a1, mounting portion; 1a11, positioning groove; 1a12, fixation holes; 2. a stator assembly; 2a, mounting holes I; 3. a rotor ring; 3a, a positioning convex part; 4. a stator ring; 4a and a second mounting hole.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, in the present wheel hub motor with a rotary transformer type detection device, the wheel hub motor includes a rim 1 and a stator assembly 2, the stator assembly 2 is fixedly installed in the rim 1, and an end cover 1a is detachably installed at an end of the rim 1 through a bolt, the detection device is installed between the end cover 1a and the stator assembly 2, the detection device is a rotary transformer encoder, the rotary transformer encoder is a small-sized ac motor for measuring angular velocity, and is connected with a controller of the wheel hub motor for transmitting an electrical signal to a controller of the wheel hub motor, the detection device includes a rotor ring 3 and a stator ring 4, and the rotor ring 3 is sleeved in the stator ring 4.

As shown in fig. 2 to 4, an annular mounting portion 1a1 is integrally formed at the center of the inner wall of the end cover 1a, at least one positioning groove 1a11 is formed on the outer side wall of the mounting portion 1a1 in an inward recessed manner, a positioning protrusion 3a is formed on the inner side wall of the rotor ring 3 in an inward protruding manner, the rotor ring 3 is sleeved outside the mounting portion 1a1, the positioning protrusion 3a on the rotor ring 3 is clamped and fixed in the positioning groove 1a11 of the mounting portion 1a1, four fixing holes 1a12 are formed at the circumferential edge of one end of the mounting portion 1a1 far away from the end cover 1a, and after the rotor ring 3 is sleeved outside the mounting portion 1a1, the fixing holes 1a12 are screwed by bolts, so that the head of each bolt can tightly press the rotor ring 3 towards the inner wall of the end cover 1a, and the rotor ring 3 can be detachably mounted on the inner wall of the end cover 1 a.

As shown in fig. 2, 5, and 6, one end of the stator assembly 2 close to the end cover 1a is provided with five mounting holes one 2a along the circumferential direction, the circumferential edge of the stator ring 4 also penetrates through five mounting holes two 4a corresponding to the positions of the mounting holes one 2a one by one, and each mounting hole two 4a is long, so that an assembler can mount the stator ring 4 on the stator assembly 2 first, then rotate the stator ring 4 appropriately, align the mounting holes one 2a with the mounting holes two 4a, then pass the mounting holes two 4a through bolts and screw the mounting holes one 2a, and detachably mount the stator ring 4 on the stator assembly 2.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although 1, rim is used more herein; 1a, an end cover; 1a1, mounting portion; 1a11, positioning groove; 1a12, fixation holes; 2. a stator assembly; 2a, mounting holes I; 3. a rotor ring; 3a, a positioning convex part; 4. a stator ring; 4a, mounting holes, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (5)

1. The utility model provides an in-wheel motor with change pressure formula detection device soon, in-wheel motor include rim (1) and install stator assembly (2) in rim (1), install end cover (1a) on rim (1), its characterized in that, detection device is including setting up the resolver encoder between end cover (1a) and stator assembly (2), and this encoder includes rotor ring (3) and stator ring (4), rotor ring (3) demountable installation is on end cover (1a) inner wall, stator ring (4) with stator assembly (2) can be dismantled and be connected, just stator ring (4) cover is established outside rotor ring (3).

2. The in-wheel motor with the rotating and voltage-changing type detection device according to claim 1, wherein an annular installation part (1a1) is arranged on the inner wall of the end cover (1a), the rotor ring (3) is sleeved outside the installation part (1a1), a positioning groove (1a11) is formed in the outer side wall of the installation part (1a1), a positioning convex part (3a) is formed on the inner side wall of the rotor ring (3) in a protruding manner, and the positioning convex part (3a) is clamped in the positioning groove (1a 11).

3. The in-wheel motor with the rotary transformer type detection device as claimed in claim 2, wherein the edge of one end of the mounting portion (1a1) away from the inner wall of the end cover (1a) is provided with a plurality of fixing holes (1a12) along the circumferential direction thereof, and the rotor ring (3) is screwed into the fixing holes (1a12) through bolts so that the rotor ring (3) is pressed against the inner wall of the end cover (1 a).

4. The in-wheel motor with the rotary variable pressure type detection device according to claim 2 or 3, wherein one end of the stator assembly (2) close to the end cover (1a) is provided with a plurality of first mounting holes (2a) along the circumferential direction, the stator ring (4) is provided with a plurality of second mounting holes (4a) along the circumferential direction, and the stator ring (4) penetrates through the second mounting holes (4a) through bolts and is screwed into the first mounting holes (2a) for fixing.

5. The in-wheel motor with a rotating transformer type detection device as claimed in claim 4, wherein each of the second mounting holes (4a) is elongated.

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