CN215772847U

CN215772847U - Compact end detection hub motor

Info

Publication number: CN215772847U
Application number: CN202121082168.3U
Authority: CN
Inventors: 沈国栋
Original assignee: Suzhou Tongsheng Electric Appliance Co ltd
Current assignee: Suzhou Tongsheng Electric Appliance Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-02-08
Anticipated expiration: 2031-05-20

Abstract

The utility model provides a compact end detection hub motor, which comprises a hub, an inner stator and an outer rotor, wherein the inner stator and the outer rotor are assembled in the hub, the left end of a middle shaft extends into the hub, the right side axis position of a left edge sealing of the hub is provided with a cylindrical installation groove, a bearing at the right side end part in the installation groove is rotatably assembled with the left end part of the middle shaft, a threaded hole is processed in the middle of the left end of the middle shaft, the left end of the middle shaft is assembled with a PCB seat, the PCB seat is fixed on the left side of the middle shaft through a screw assembled with the threaded hole, the left side of the PCB seat is assembled with a magnetic woven PCB plate assembly, and a detection magnetic steel facing the magnetic woven PCB plate assembly is assembled in the installation groove of the left edge sealing; this in-wheel motor mainly uses in the side wheel of vehicle, and among its measurement structure, carries out fixed mounting through the screw hole in the middle of the axis, detects the structure and is located an independent cavity moreover, can not influenced by other components, and the result of use is better, and this simple structure easily processes the implementation.

Description

Compact end detection hub motor

Technical Field

The utility model belongs to the technical field of hub motors, and particularly relates to a compact type end detection hub motor.

Background

The wheel hub motor integrates a power system, a transmission system and a brake system into a wheel hub of a wheel, so that the wheel has a power function, and when the wheel hub motor is used on a running machine or equipment, the space of the whole equipment is greatly saved, the structure of the equipment is more compact, and the miniaturization of the running machine is facilitated. For better control to in-wheel motor's outer lane when in-wheel motor uses, need be at the inside assembly detection device of in-wheel motor, traditional detection structure assembly is when in-wheel motor's axial surface, probably receive the influence of in-wheel motor last outer lane magnet steel, make to measure insufficiently accurately, and will detect the structure and place when in-wheel motor's axle head, can make in-wheel motor axial too wide, influence the holistic pleasing to the eye of wheel hub, simultaneously because in-wheel motor axle head assembled position is comparatively narrow, make to detect the structure assembly and make things convenient for inadequately, also unstable inadequately during the assembly.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides the compact end detection hub motor which is simple in structure, convenient to use and more stable in detection process.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the compact end detection hub motor comprises a hub, an inner stator and an outer rotor which are assembled in the hub, wherein the hub comprises a round left sealing edge and a round right sealing edge, the left sealing edge and the right sealing edge are connected through a coaxial pipe body, an assembly cavity is formed between the left sealing edge, the right sealing edge and the pipe body, a coaxial middle shaft is assembled in the middle of the hub, the left end of the middle shaft extends into the hub, a cylindrical installation groove is designed at the right side axis position of the left sealing edge, a bearing at the right side end part in the installation groove is rotatably assembled with the left end part of the middle shaft, a threaded hole is processed in the middle of the left end of the middle shaft, a PCB seat is assembled at the left end of the middle shaft, the PCB seat is fixed at the left side of the middle shaft through a screw assembled with the threaded hole, a magnetic woven PCB assembly is assembled at the left side of the PCB seat, detection magnetic steel magnet which is over against the magnetic woven PCB assembly is assembled in the installation groove of the left sealing edge, the magnetic braided PCB assembly is characterized in that a wire inlet hole is formed in the right side of the middle shaft, an inclined wire outlet hole is formed in the middle of the middle shaft, a wire outlet groove parallel to the axis is formed in the left side of the middle shaft, the wire outlet groove is communicated with the wire outlet hole, a circuit is assembled in the wire inlet hole, and the circuit is connected with the stator winding and the magnetic braided PCB assembly in a mode that the wire outlet groove is respectively branched from the hole.

Preferably, the PCB seat is in an oblate shape, an installation shaft shoulder is machined on the PCB seat, and the PCB seat is coaxially assembled on the right side of the bearing through the shaft shoulder.

Preferably, the left sealing edge and the pipe body are integrally processed.

Preferably, an integrated flange is machined at the right end of the middle shaft.

Preferably, the screw is a cross countersunk head screw, a conical through hole corresponding to the countersunk head part of the screw is processed in the middle of the PCB seat, a raised head used for limiting is processed on the right side of the PCB seat, and a corresponding structure used for limiting the raised head is processed on the left side of the middle shaft.

Preferably, a counter bore for assembling the detection magnetic steel is machined in the inner side of the left sealing edge.

Preferably, the hub is externally fitted with an outer wheel of solid rubber material.

The utility model has the beneficial effects that: the compact end detection hub motor is mainly used in a side wheel of a vehicle, the motor is fixedly connected with the vehicle through a middle shaft, alternating current is connected into a winding of an inner stator to drive the hub fixedly connected with an outer rotor to rotate, in the hub motor, a left shaft end of the middle shaft and a mounting groove of a left sealing edge form an independent cavity, a magnetic encoding PCB assembly is fixed at the left end of the middle shaft through a PCB seat, and detection magnetic steel is assembled in the mounting groove of the left sealing edge, so that when the hub moves, the detection magnetic steel moves relative to the magnetic encoding PCB assembly, the detection magnetic steel can generate an alternating magnetic field on the magnetic encoding PCB assembly, and a measurement function is realized through the magnetic encoding PCB assembly. In this measurement structure, carry out fixed mounting through the screw hole in the middle of the axis, it is more firm to install, through the inside position direct mount detection magnet steel of left banding mounting groove, through the axis with the assembly of magnetic encoding PCB board subassembly inside the mounting groove, the mounting groove not only is used for installing the axis left end through the bearing like this, hold simultaneously and detect the structure, make in-wheel motor overall structure compacter, it is located an independent cavity to detect the structure moreover, can not influenced by other components, the result of use is better, this simple structure is easily processed and implemented.

Drawings

Fig. 1 is a schematic structural diagram of a section of a compact end-detecting hub motor.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a schematic structural view of a section of the medial axis.

Fig. 4 is a schematic perspective view of a PCB socket.

Detailed Description

The utility model is further illustrated by the following examples:

as used in this patent, directional terms, such as orientation or positional relationship, are used with respect to the drawings only for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

In the embodiment shown in fig. 1, 2, 3, and 4, the compact end detection hub motor includes a hub 1, an inner stator and an outer rotor assembled in the hub, where the hub 1 includes a left sealing edge 11 and a right sealing edge 12, the left sealing edge 11 and the right sealing edge 12 are connected by a coaxial pipe 13, an assembly cavity is formed between the left sealing edge 11 and the pipe 13, a coaxial middle shaft 2 is assembled in the middle of the hub 1, and the left end of the middle shaft 2 extends into the hub 1; the right side axis position of the left sealing edge 1 is designed with a cylindrical mounting groove 14, a bearing 3 at the right side end part in the mounting groove 14 is rotatably assembled with the left end part of the middle shaft 2, a threaded hole 21 is processed in the middle of the left end of the middle shaft 2, a PCB seat 4 is assembled at the left end of the middle shaft 2, the PCB seat 4 is fixed at the left side of the middle shaft 2 through a screw 5 assembled with the threaded hole 21, a magnetic woven PCB plate assembly 6 is assembled at the left side of the PCB seat 4, and a detection magnetic steel 7 just facing the magnetic woven PCB plate assembly 6 is assembled in the mounting groove 14 of the left sealing edge 11. The magnetic encoding PCB assembly 6 is matched with the detection magnetic steel 7 for use, the magnetic encoding PCB assembly 6 can induce the magnetic field change caused by the detection magnetic steel 7 and record the magnetic field change and transmit the magnetic field change to the control equipment using the hub motor, so that the detection purpose of physical quantity is realized, the detection structure is mainly used for detecting the rotating speed of the hub motor in the embodiment, and the running speed of the wheel is further detected according to the diameter of an outer wheel of the hub motor.

For the design of the line channel on the hub motor, in this embodiment, a line inlet hole 22 is designed on the right side of the center shaft 2, an inclined line outlet hole 23 is designed in the middle of the center shaft 2, a line outlet groove 24 parallel to the axis is designed on the left side of the center shaft 2, and the line outlet groove 24 is communicated with the line outlet hole 23. And a circuit is assembled in the wire inlet hole 22, and the circuit is respectively branched from the wire outlet groove 24 of the wire outlet hole 23 and is connected with the stator winding and the magnetic braided PCB assembly 6.

The compact end detection hub motor is mainly used in a side wheel of a vehicle, the motor is fixedly connected with the vehicle through a middle shaft 2, alternating current is connected into a winding of an inner stator to drive the hub fixedly connected with an outer rotor to rotate, in the hub motor, a left shaft end of the middle shaft 2 and a mounting groove 14 of a left sealing edge 11 form an independent cavity, a magnetic encoding PCB assembly 6 is fixed at the left end of the middle shaft 2 through a PCB seat 4, a detection magnetic steel 7 is assembled in the mounting groove 14 of the left sealing edge 11, therefore, when the hub 1 moves, the detection magnetic steel 7 moves relative to the magnetic encoding PCB assembly 6, the detection magnetic steel 7 can generate an alternating magnetic field on the magnetic encoding PCB assembly 6, and the measurement function is realized through an induction element of the magnetic encoding PCB assembly 6. In this measurement structure, carry out fixed mounting through the screw hole 21 in the middle of axis 2, it is more firm to install, 14 internal points of mounting groove through left banding 11 directly fix and detect magnet steel 7, assemble PCB board subassembly 6 in mounting groove 14 inside with magnetism through the axis, mounting groove 14 not only is used for installing 2 left ends in the axis through bearing 3 like this, hold simultaneously and detect the structure, make in-wheel motor overall structure compacter, and detect the structure and be located an independent cavity, can not influenced by other components, excellent in use effect, this simple structure easily processes implementation.

In the specific design, as shown in fig. 1. As shown in fig. 2 and 4, the PCB base 4 is in an oblate shape, and a mounting shoulder is processed on the PCB base 4, and the PCB base 4 is coaxially assembled on the right side of the bearing 3 through the shoulder. In the embodiment, the bearing uses the deep groove ball bearing, so that the PCB seat 4 is accurately positioned and fastened with the left end of the middle shaft 2 through the inner ring of the bearing 3, the position change between the magnetic woven PCB assembly 6 assembled on the PCB seat 4 and the detection magnetic steel 7 is more accurate during measurement, and the measurement precision can be effectively improved.

In the specific design, as shown in fig. 1 and 3, the left sealing edge 11 and the pipe body 13 are integrally processed. Therefore, the hub 1 is convenient and accurate to process and assemble integrally and is firmer in use. An integrated flange is processed at the right end of the middle shaft 2. The hub motor can be conveniently assembled at the outer side position of a vehicle through the flange structure, the installation process is simpler and quicker than the traditional shaft connection structure,

as shown in fig. 1 and 2, the screw 5 is a cross countersunk head screw, a conical through hole corresponding to the countersunk head portion of the screw 5 is processed in the middle of the PCB seat 4, a raised head 41 for limiting is processed on the right side of the PCB seat 4, and a corresponding structure for limiting the raised head 41 is processed on the left side of the middle shaft 2. In this embodiment, the outer portion of the raised head 41 is flush with the outer circle of the PCB seat 4, so that the raised head 41 and the shoulder portion of the PCB seat 4 can be directly installed in the inner ring of the bearing 3, the inner side of the raised head 41 adopts a planar structure perpendicular to the right side of the PCB seat 4, and a structure capable of assembling the raised head 41 is correspondingly designed on the left side of the center shaft 2, that is, the corresponding portion of the center shaft 2 is flattened.

In specific design, as shown in fig. 1, a counter bore for assembling the detection magnetic steel 7 is processed on the inner side of the left sealing edge 11. Therefore, the detection magnetic steel 7 can be directly assembled in the counter bore, the assembly is more convenient, and meanwhile, the counter bore is used for positioning, so that the position of the detection magnetic steel 7 is opposite to that of the magnetic printed PCB board assembly 6, and the detection accuracy can be effectively improved. The hub 1 is externally fitted with an outer wheel 8 made of solid rubber material.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A compact end detection hub motor comprises a hub (1), an inner stator and an outer rotor which are assembled in the hub, wherein the hub (1) comprises a left sealing edge (11) and a right sealing edge (12) which are circular, the left sealing edge (11) and the right sealing edge (12) are connected through a coaxial pipe body (13), an assembly cavity is formed between the left sealing edge (11) and the pipe body (13), a coaxial middle shaft (2) is assembled in the middle of the hub (1), and the left end of the middle shaft (2) extends into the hub (1); the method is characterized in that: the right side axis position design of left banding (11) has columniform mounting groove (14), the bearing (3) of the right side tip in mounting groove (14) and the rotatable assembly of the left end portion of axis (2), processing threaded hole (21) in the middle of axis (2) left end, axis (2) left end is equipped with PCB seat (4), PCB seat (4) pass through with screw (5) of threaded hole (21) assembly fix the left side of axis (2), PCB seat (4) left side is equipped with magnetic encoding PCB board subassembly (6), be equipped with in mounting groove (14) of left banding (11) just to the detection magnet steel (7) of magnetic encoding PCB subassembly (6), axis (2) right side design has entrance hole (22), axis (2) middle design has inclined wire hole (23), axis (2) left side design has wire groove (24) parallel with the axis, the wire outlet groove (24) is communicated with the wire outlet hole (23).

2. The compact end-detecting in-wheel motor of claim 1, wherein: the PCB seat (4) is in an oblate shape, an installation shaft shoulder is machined on the PCB seat, and the PCB seat (4) is coaxially assembled on the right side of the bearing (3) through the shaft shoulder.

3. The compact end-detecting in-wheel motor according to claim 1 or 2, wherein: the left sealing edge (11) and the pipe body (13) are integrally processed.

4. The compact end-detecting in-wheel motor according to claim 1 or 2, wherein: an integrated flange is processed at the right end of the middle shaft (2).

5. The compact end-detecting in-wheel motor according to claim 1 or 2, wherein: the screw (5) adopts a cross countersunk head screw, a conical through hole corresponding to the countersunk head part of the screw (5) is processed in the middle of the PCB seat (4), a raised head (41) used for limiting is processed on the right side of the PCB seat (4), and a corresponding structure used for limiting the raised head (41) is processed on the left side of the middle shaft (2).

6. The compact end-detecting in-wheel motor of claim 1, wherein: and a counter bore used for assembling the detection magnetic steel (7) is processed on the inner side of the left sealing edge (11).

7. The compact end-detecting in-wheel motor of claim 1, wherein: the outside of the hub (1) is fitted with an outer wheel (8) made of solid rubber material.