CN220172988U - Motor rotary-transformer mounting structure and permanent magnet motor - Google Patents

Abstract

The utility model relates to the technical field of motors, in particular to a motor rotary-changing installation structure and a permanent magnet motor. The rotary stator surrounds the rotary rotor, the rotary stator can be installed on the inner end face of the end cover, the end cover is provided with a first stop shoulder for positioning the rotary stator, the inner end face of the end cover is provided with a threaded hole for installing and fixing the rotary stator, a rotary stator bracket is not needed in the installation process, and the rotary stator structure is simple and can reduce space occupation. Through with the fixed mounting of revolver inside the motor, whole integrated level is high, and installation and dismantlement are convenient, simple structure is reasonable, is particularly suitable for the occasion that motor axial size is restricted, need often dismantle the bearing.

Description

Motor rotary-transformer mounting structure and permanent magnet motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor rotary-transformer mounting structure and a permanent magnet motor.

Background

An electric Motor (motorr) is a device that converts electrical energy into mechanical energy by generating a rotating magnetic field with energized coils (i.e., stator windings) and acting on a rotor to create a magnetomotive rotational torque. The permanent magnet motor generates torque by utilizing interaction of the magnetic field of the permanent magnet and current in the coil, does not need an external magnetic field source, and is suitable for occasions needing high efficiency, high precision and high reliability, such as wind power generation, medical equipment and the like.

In conventional motor designs, the shaft may be designed with sufficient axial length to accommodate the components of bearings, rotors, etc., as the axial dimensions are not limited. However, the current permanent magnet motor tends to be integrated and miniaturized, so that the axial dimension of the permanent magnet motor is reduced greatly, but the design of the position of parts such as a rotary transformer, a bearing and the like on a rotating shaft is troublesome. Moreover, the existing rotary transformer is generally sleeved on the rotating shaft, and is not easy to disassemble and assemble and is easy to deform. How to meet the integrated design requirement and to reliably and conveniently install the rotary transformer rotor on the rotating shaft becomes a problem to be solved urgently.

Disclosure of Invention

First, the technical problem to be solved

In order to solve the above problems in the prior art, the present utility model provides a motor rotary-transformer mounting structure and a permanent magnet motor, so as to conveniently and reliably mount a rotary-transformer rotor on a rotating shaft while meeting the requirement of integrated design.

(II) technical scheme

In order to achieve the above purpose, the motor rotary-changing installation structure comprises a rotating shaft, a rotary-changing stator, a rotary-changing rotor and a first elastic retainer ring, wherein a first shaft shoulder and a first groove are formed on the rotating shaft, and the first elastic retainer ring can be clamped into the first groove and is matched with the first shaft shoulder to install the rotary-changing rotor;

the rotary stator surrounds the rotary rotor, and the rotary stator can be arranged on the inner end face of the end cover.

Optionally, the thickness of the rotary variable rotor is greater than the thickness of the first shaft shoulder;

the thickness of the rotary variable rotor is larger than that of the first circlip protruding out of the first groove portion.

Optionally, the first circlip is a circlip for a shaft.

Optionally, the end cover is annular, and a first shoulder is formed on one side, close to the inner end surface, of the inner hole of the end cover;

an annular edge is formed on the outer peripheral surface of the rotary stator, one end face of the rotary stator is abutted to the first retaining shoulder, and one side plane of the annular edge is abutted to the inner end face of the end cover.

Optionally, the annular rib is mounted to the inner end face of the end cap by a plurality of first screws.

Further, the utility model also provides a permanent magnet motor, which comprises an end cover, a bearing, a second elastic retainer ring, a third elastic retainer ring and the motor rotation-changing installation structure;

a second retaining shoulder and a clamping groove are formed in an inner hole of the end cover, and the second elastic retainer ring can be clamped into the clamping groove and matched with the second retaining shoulder to install the outer ring of the bearing;

the bearing is characterized in that a second shoulder and a second groove are further formed in the rotating shaft, and the third elastic retainer ring can be clamped into the second groove and matched with the second shoulder to install the inner ring of the bearing.

Optionally, the thickness of the second shoulder is not greater than the thickness of the outer race of the bearing.

Optionally, the bearing is a deep groove ball bearing.

Optionally, the second circlip is a circlip for hole; the third circlip is a circlip for a shaft.

Optionally, a sinking groove is formed on the outer end surface of the end cover at a position corresponding to the second shoulder;

the permanent magnet motor further comprises a cover plate, and the cover plate is installed in the sinking groove through a plurality of second screws.

(III) beneficial effects

In the technical scheme, the rotary transformer is installed on the rotating shaft through the first elastic retainer ring and the first shaft shoulder in a matched mode, and the rotary transformer is simple in structure, reliable in installation, convenient and easy to operate. After the end cover and the bearing are assembled on the rotating shaft, the rotary stator is assembled on the inner end surface of the end cover, and then the rotor and the end cover are assembled on the machine base of the motor. The motor is characterized in that a first stop shoulder is arranged on the end cover of the non-driving end of the motor and used for positioning the rotary stator, a threaded hole is formed in the inner end face of the end cover and used for installing and fixing the rotary stator, a rotary stator bracket is not needed in the installation process, and the motor is simple in structure and can reduce space occupation. In addition, when the bearing at the non-driving end of the motor is disassembled, only the rotary-variable stator is required to be disassembled, and the rotary-variable rotor does not need to be changed or disassembled. The rotor is made by lamination, the scattered piece is easy to be caused by disassembly, the deformation and the scattered piece cannot be caused by the fact that the rotor is not disassembled, and the structure can be used for occasions where the bearing needs to be replaced frequently.

Through with rotatory transformer fixed mounting in inside the motor, solved the problem of motor axial size overlength, also can make things convenient for the bearing often to dismantle. The permanent magnet motor has high overall integration level, is convenient to install and detach, has a simple and reasonable structure, and is particularly suitable for occasions in which the axial size of the motor is limited and the bearing needs to be frequently detached.

Drawings

FIG. 1 is a schematic diagram of a motor rotary mounting structure of the present utility model;

fig. 2 is a schematic partial structure of the permanent magnet motor of the present utility model.

1: a rotating shaft; 2: a rotating stator; 21: annular ribs; 3: a rotor; 4: a first circlip; 5: an end cap; 51: a second shoulder; 6: a bearing; 7: a first screw; 8: a first shoulder; 9: a cover plate; 10: the second elastic retainer ring; 11: and a third circlip.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.

Referring to fig. 1, the utility model provides a motor rotary-transformer mounting structure, which comprises a rotating shaft 1, a rotary-transformer stator 2, a rotary-transformer rotor 3 and a first elastic retainer ring 4, wherein a first shaft shoulder and a first groove are formed on the rotating shaft 1, and the first elastic retainer ring 4 can be clamped into the first groove and is matched with the first shaft shoulder to mount the rotary-transformer rotor 3; the spin-variable stator 2 surrounds the spin-variable rotor 3, and the spin-variable stator 2 can be mounted on an inner end surface of the end cover 5.

Further, as shown in fig. 2, the utility model also provides a permanent magnet motor, which comprises an end cover 5, a bearing 6, a second circlip 10, a third circlip 11 and the motor rotation-varying mounting structure. The inner hole of the end cover 5 is provided with a second blocking shoulder 51 and a clamping groove, and the second circlip 10 can be clamped into the clamping groove and matched with the second blocking shoulder 51 to install the outer ring of the bearing 6. The rotating shaft 1 is also provided with a second shoulder and a second groove, and the third elastic retainer ring 11 can be clamped into the second groove and matched with the second shoulder to mount the inner ring of the bearing 6. In the preferred embodiment, the bearing 6 may be a deep groove ball bearing or the like. The shoulder is an annular structure protruding radially inwards from the circumferential surface of the inner hole of the end cover 5. The elastic retainer ring is matched with the second retaining shoulder 51 or the second shoulder to respectively mount the inner ring and the outer ring of the bearing 6, so that the disassembly and assembly difficulty is reduced, and the machining precision of parts can be correspondingly reduced.

Because the rotary variable rotor 3 is matched with the first shaft shoulder through the first elastic retainer ring 4 and is arranged on the rotating shaft 1, the structure is simple, the installation is reliable, and the operation is convenient and easy. After the end cover 5 and the bearing 6 are mounted on the rotating shaft 1, the rotary stator 2 is mounted on the inner end surface of the end cover 5, and then the rotor is mounted on the machine base of the motor together with the end cover 5. Wherein, offered first fender shoulder on the end cover 5 of motor non-drive end in order to be used for locating the rotation and become stator 2, open threaded hole in order to be used for installing fixed rotation and become stator 2 on the interior terminal surface of end cover 5, need not to revolve and become the stator support in the installation, simple structure just can reduce the space occupation. In addition, when the bearing 6 at the non-driving end of the motor is disassembled, only the rotary transformer 2 is disassembled, and the rotary transformer 3 does not need to be changed or disassembled. The rotor 3 is manufactured by lamination, the scattered piece is easy to be caused by disassembly, the scattered piece risk caused by the deformation of the rotor 3 can be prevented without disassembling the rotor 3, and the structure can be used in the occasion that the bearing 6 needs to be replaced frequently.

Through with the ware fixed mounting that becomes soon inside the motor, can save the motor outer space, the motor axial dimension shortens, has solved the problem of motor axial dimension overlength, satisfies the design demand that integrates, moreover, can also make things convenient for the frequent dismantlement of bearing 6 through the cooperation of above-mentioned each structure. The permanent magnet motor has high overall integration level, is convenient to install and detach, has a simple and reasonable structure, and is particularly suitable for occasions in which the axial size of the motor is limited and the bearing 6 needs to be frequently detached.

Referring again to fig. 1, in a preferred embodiment, the thickness of the rotary knob 3 is greater than the thickness of the first shoulder; the thickness of the rotor 3 is greater than the thickness of the first circlip 4 protruding from the first groove portion. So arranged, the first shoulder and the first circlip 4 can be prevented from interfering with the operation of the rotary transformer rotor 3. The thickness of the shaft shoulder refers to the distance protruding radially outwards from the base circumferential surface of the rotating shaft 1. In addition, referring again to fig. 2, the thickness of the second shoulder 51 is no greater than the thickness of the outer race of the bearing 6, so that the second shoulder 51 can perform an axial stop on the outer race of the bearing 6, but does not interfere with the installation of other structures. The thickness of the shoulder means a distance protruding radially inward from the circumferential surface of the inner hole of the end cap 5.

The first circlip 4 is a circlip for a shaft, the second circlip 10 is a circlip for a hole, and the third circlip 11 is a circlip for a shaft. The elastic retainer ring for holes can be installed in a round hole (namely a clamping groove) and used for fixing the axial movement of parts, and the outer diameter of the retainer ring is slightly larger than the diameter of the round hole for assembly. During installation, a clamp spring clamp is needed, a clamp mouth is inserted into a clamp hole of the retainer ring, and the retainer ring is clamped, so that the clamp mouth can be placed into the pre-processed circular hole inner groove. The circlips for shafts can be mounted on shaft grooves (i.e. channels) for axial movement of the stationary parts, such circlips having an inner diameter slightly smaller than the diameter of the assembled shaft. When the clamping spring pliers are used for installation, the pliers mouth is inserted into the pliers holes of the retainer ring, and the retainer ring is expanded to be placed in the prefabricated shaft groove.

Referring again to fig. 2, in a more preferred embodiment, the end cap 5 is annular, and a first shoulder 8 is formed on a side of the inner bore of the end cap 5 near the inner end surface. An annular rib 21 is formed on the outer peripheral surface of the rotary stator 2, and one end surface of the rotary stator 2 abuts against the first shoulder 8, and one side surface of the annular rib 21 abuts against the inner end surface of the end cap 5. Axial and radial positioning between the end cap 5 and the spin-set stator 2 can be achieved by the annular ribs 21 to ensure mounting accuracy. The annular rib 21 is mounted on the inner end face of the end cover 5 through a plurality of first screws 7, so that the assembly reliability is ensured, and meanwhile, the assembly and disassembly are convenient. According to the permanent magnet motor, the rotary transformer is arranged in the motor, the rotary stator 2 is fixedly arranged on the inner end face of the end cover 1 of the non-driving end through the first screw 7, the rotary rotor 3 is arranged on the rotating shaft 1 of the motor, the rotary stator 2, the end cover 5 and the bearing 6 are together arranged and detached, a rotary stator bracket is not required to be additionally arranged in the installation process, and the permanent magnet motor is simple in structure and can reduce space occupation.

In addition, as shown in fig. 2, a countersink is formed on the outer end surface of the end cap 5 at a position corresponding to the second shoulder 51. The permanent magnet motor further comprises a cover plate 9, the cover plate 9 is installed in the sinking groove through a plurality of second screws, the sinking groove is an installation reserved position of the cover plate 9, and the cover plate 9 can play a role in dust blocking and sealing. The motor rotary transformer is arranged inside the motor, the motor space is reasonably and effectively utilized, a cover plate 9 is arranged outside the end cover 5 and is flush with the end cover 5, the structure is simple, the axial size of the motor is effectively shortened, and the integrated design requirement is met.

The following describes a specific installation process of the permanent magnet motor based on the above preferred embodiment. The permanent magnet motor comprises the following mounting steps:

s1, a rotary variable rotor 3 is mounted on a rotating shaft 1 through the cooperation of a first elastic retainer ring 4 and a first shaft shoulder;

s2, the inner ring of the bearing 6 is mounted on the rotating shaft 1 through the matching of the third elastic retainer ring 11 and the second shoulder;

s3, the outer ring of the bearing 6 is mounted on the inner hole of the end cover 5 through the cooperation of the second elastic retainer ring 10 and the second retaining shoulder 51;

s4, sleeving the end cover 5 on the rotating shaft 1, and enabling the inner ring and the outer ring of the bearing 6 to be matched with each other;

s5, the rotary stator 2 is arranged on the inner end face of the end cover 5 through a plurality of first screws 7, and the rotary stator 2 and the rotary stator 3 are mutually matched;

s6, installing the cover plate 9 in the sinking groove of the end cover 5, and installing the end cover 5 on the motor base;

s7, installing an end cover assembly of the driving end and the like.

The permanent magnet motor can be smoothly installed based on the steps, and the permanent magnet motor can be smoothly disassembled based on the opposite steps. The rotary rotor 3 can be kept on the rotating shaft 1 during disassembly to prevent the rotary rotor 3 from deforming and scattering sheets, and the structure can be used in occasions where the bearing 6 needs to be replaced frequently.

While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims (10)

1. The motor rotary-changing installation structure is characterized by comprising a rotating shaft (1), a rotary-changing stator (2), a rotary-changing rotor (3) and a first elastic retainer ring (4), wherein a first shaft shoulder and a first groove are formed on the rotating shaft (1), and the first elastic retainer ring (4) can be clamped into the first groove and matched with the first shaft shoulder to install the rotary-changing rotor (3);

the rotary stator (2) surrounds the rotary rotor (3), and the rotary stator (2) can be arranged on the inner end face of the end cover (5).

2. The motor rotary transformer mounting structure according to claim 1, characterized in that the thickness of the rotary transformer rotor (3) is greater than the thickness of the first shaft shoulder;

the thickness of the rotary deformation rotor (3) is larger than that of the first circlip (4) protruding out of the first groove part.

3. A motor spin-on mounting structure according to claim 1, characterized in that the first circlip (4) is a circlip for a shaft.

4. A motor rotary transformer mounting structure according to any one of claims 1-3, characterized in that the end cover (5) is annular, and a first shoulder (8) is formed on one side of the inner hole of the end cover (5) close to the inner end surface;

an annular rib (21) is formed on the outer peripheral surface of the rotary stator (2), one end surface of the rotary stator (2) is abutted to the first retaining shoulder (8), and one side plane of the annular rib (21) is abutted to the inner end surface of the end cover (5).

5. A motor spin-on mounting structure according to claim 4, wherein the annular rib (21) is mounted on the inner end surface of the end cap (5) by a plurality of first screws (7).

6. A permanent magnet motor, characterized in that it comprises an end cap (5), a bearing (6), a second circlip (10), a third circlip (11) and a motor spin-on mounting structure according to any one of claims 1-5;

a second blocking shoulder (51) and a clamping groove are formed in an inner hole of the end cover (5), and the second elastic retainer ring (10) can be clamped into the clamping groove and matched with the second blocking shoulder (51) to install the outer ring of the bearing (6);

the rotating shaft (1) is further provided with a second shoulder and a second groove, and the third elastic retainer ring (11) can be clamped into the second groove and matched with the second shoulder to install the inner ring of the bearing (6).

7. A permanent magnet machine according to claim 6, characterized in that the thickness of the second shoulder (51) is not greater than the thickness of the outer ring of the bearing (6).

8. A permanent magnet machine according to claim 6, characterized in that the bearing (6) is a deep groove ball bearing.

9. A permanent magnet machine according to claim 6, characterized in that the second circlip (10) is a circlip for holes; the third circlip (11) is a circlip for a shaft.

10. The permanent magnet motor according to any one of claims 6-9, wherein a countersink is formed on the outer end surface of the end cover (5) at a position corresponding to the second shoulder (51);

the permanent magnet motor further comprises a cover plate (9), and the cover plate (9) is installed in the sinking groove through a plurality of second screws.