CN112600323A

CN112600323A - Insulating rotating shaft for miniature motor

Info

Publication number: CN112600323A
Application number: CN202011362488.4A
Authority: CN
Inventors: 张磊; 张伟
Original assignee: Supersonic Intelligent Technology Hangzhou Co ltd
Current assignee: Supersonic Intelligent Technology Hangzhou Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-04-02

Abstract

The invention discloses an insulated rotating shaft for a miniature motor, which comprises a shaft body: the tip of axis body is provided with the bearing body, and the tip of bearing body is provided with the connector, the cover is equipped with insulating cover on the bearing body, and insulating cover is connected through a connecting assembly along the axial of axis body and axis body relative movement, or along the axial of bearing body and bearing body relative movement and be connected. In the invention, the insulation rotating shaft adopts the insulation sleeve in split connection, the insulation sleeve can be freely and flexibly disassembled and assembled with the motor rotating shaft, and the inconvenience caused by the disassembly and maintenance of the integrated motor rotating shaft and insulation sleeve is avoided, so that the damaged insulation sleeve can be independently replaced and maintained without integrally replacing the motor rotating shaft, and the use and maintenance cost of the motor rotating shaft is effectively reduced.

Description

Insulating rotating shaft for miniature motor

Technical Field

The invention relates to the technical field of motor rotating shafts, in particular to an insulating rotating shaft for a miniature motor.

Background

The bearing is an important component in the motor and is extremely easy to be damaged, the bearing damage generally comprises three types of thermal damage, force damage and electrical damage, wherein the electrical damage is taken as a main part, shaft voltage can be generated on a motor rotating shaft due to the existence of common mode voltage generated in the motor, larger shaft current is generated at the moment when the shaft voltage breaks through a lubricating oil film, a path of the shaft current is transmitted to a motor end cover through the motor rotating shaft through the bearing and is grounded to form a loop, electric corrosion can be generated on the surface of a rolling body of the bearing due to the damage of the shaft current, so that a bearing raceway is damaged, the motor can generate noise, vibration or cause quality problems of equipment failure and the like, and in order to protect the safe use of the bearing in the miniature motor, the shaft current needs to be insulated by means of an.

The insulating pivot of current motor generally adopts insulating bearing or takes insulating axle current end cover of preventing to protect, and wherein insulating bearing's manufacturing use cost is higher to form the structure of integral type with motor casing, can't change the maintenance alone to it, and the end cover dismouting process is comparatively complicated, need cooperate a plurality of fastening components to make up the protection, increased the dismouting work burden of motor pivot, can't realize quick nimble dismouting effect.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an insulation rotating shaft for a miniature motor, which adopts a split type insulation sleeve structure to realize quick, convenient and independent disassembly, assembly and replacement of the rotating shaft and the insulation sleeve of the motor.

In order to achieve the purpose, the invention adopts the following technical scheme: an insulating rotating shaft for a miniature motor comprises a shaft body:

a bearing body is arranged at the end part of the shaft body, and a connecting body is arranged at the end part of the bearing body;

the bearing body is sleeved with an insulating sleeve, and the insulating sleeve moves and is connected with the shaft body along the axial direction of the shaft body through a connecting assembly or moves and is connected with the bearing body along the axial direction of the bearing body.

As a further description of the above technical solution:

the connecting assembly comprises an assembling block arranged at the end part of the insulating sleeve, and the assembling block is assembled with the end part of the shaft body in an inserting manner along an assembling groove formed in the axial direction of the shaft body.

As a further description of the above technical solution:

the connecting assembly comprises a plug arranged at the end part of the insulating sleeve, and the plug is connected with the end part of the shaft body in a plug-in mode along an inserting groove formed in the axial direction of the shaft body.

As a further description of the above technical solution:

the connecting component comprises a limiting groove arranged on the inner wall of the insulating sleeve, and the limiting groove is sleeved on the bearing body and moves along a limiting block arranged in the axial direction of the bearing body.

As a further description of the above technical solution:

the fastening ring is also included;

the inner wall of the fastening ring is provided with a guide groove, and the guide groove is sleeved on a guide block which is arranged on the bearing body along the axial direction of the bearing body and is contacted with the end part of the insulating sleeve.

As a further description of the above technical solution:

the arc end of tighrening ring is equipped with the through-hole, and runs through in the through-hole and be provided with the pin, and the pin extends to the nail inslot that offers on the guide block and fixes.

As a further description of the above technical solution:

the end part of the limiting block and the axial lead of the guide block are positioned on the same straight line, and the cross section of the limiting block is larger than the cross section area of the guide block.

The invention provides an insulated rotating shaft for a miniature motor. The method has the following beneficial effects:

this insulating pivot adopts split type connected insulating cover, can be with the free nimble of insulating cover carry out dismouting operation with motor shaft, the motor shaft of having avoided the integral type with insulating cover the inconvenience that brings when dismantling the maintenance to be favorable to carrying out solitary change maintenance processing to the insulating cover of damage, need not to carry out the whole change to motor shaft, effectual use and the cost of maintenance who has reduced motor shaft.

Drawings

Fig. 1 is a schematic view of an overall internal structure of an insulated rotating shaft for a micro motor according to the present invention;

FIG. 2 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 5 is a schematic view of a fastening ring according to the present invention;

fig. 6 is a schematic structural view of a bearing body according to the present invention.

Illustration of the drawings:

1. a shaft body; 11. assembling a groove; 12. a slot; 2. an insulating sleeve; 21. assembling the block; 22. a plug; 23. a limiting groove; 3. a fastening ring; 31. a guide groove; 32. a pin; 33. a through hole; 4. a bearing body; 41. a limiting block; 42. a guide block; 43. a nail groove; 5. a connector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1, an insulating rotating shaft for a micro motor includes a shaft body 1:

a bearing body 4 is arranged at the end part of the shaft body 1, and a connecting body 5 is arranged at the end part of the bearing body 4 and is used for connecting a driving part of a motor rotating shaft to realize the driving force transmission of the motor rotating shaft;

the cover is equipped with insulating cover 2 on bearing body 4, overlaps the motor bearing cover on insulating cover 2, carries out insulating isolation with motor shaft and motor bearing, prevents that motor bearing from receiving the influence of axle current and the condition of taking place the harm, and insulating cover 2 is connected with axis body 1 relative movement along the axial of axis body 1 through a coupling assembly, or is connected with bearing body 4 relative movement along the axial of bearing body 4.

This insulating pivot adopts split type connected insulating cover 2, can be with the insulating cover 2 free nimble with bearing body 4 carry out dismouting operation, the motor shaft of having avoided the integral type with insulating cover 2 the inconvenience that brings when dismantling the maintenance to be favorable to carrying out solitary change maintenance processing to insulating cover 2 that damages, need not to carry out the whole change to the motor shaft, the effectual use and the cost of maintenance that have reduced the motor shaft.

Example one

As shown in fig. 2, the connecting assembly includes an assembling block 21 disposed at the end of the insulating sleeve 2, the assembling block 21 and the end of the shaft body 1 are assembled in an inserting manner along the axial direction of the assembling groove 11, wherein the cross sections of the assembling block 21 and the assembling groove 11 are both arc-shaped structures, so that when the assembling block 21 is assembled inside the assembling groove 11, the shaft body 1 and the insulating sleeve 2 can be reinforced, the phenomenon of slipping and rotating of the insulating sleeve 2 on the shaft body 1 is prevented, and meanwhile, the assembling, disassembling and maintaining operations of the insulating sleeve 2 are facilitated.

Example two

As shown in fig. 3, the connection assembly includes a plug 22 disposed at the end of the insulating sleeve 2, the plug 22 is connected with the end of the shaft body 1 in a plug-in manner along the axial direction of the slot 12, the cross sections of the plug 22 and the slot 12 are both circular structures, so that when the plug 22 is inserted into the slot 12, the plug can play a role in reinforcing the shaft body 1 and the insulating sleeve 2, prevent the insulating sleeve 2 from slipping and rotating on the shaft body 1, and facilitate the dismounting and maintenance operations of the insulating sleeve 2.

EXAMPLE III

As shown in fig. 4, coupling assembling includes a spacing groove 23 of seting up at 2 inner walls of insulating cover, and spacing groove 23 cover is established and is moved along the stopper 41 that its axial set up on bearing body 4, the cross section of stopper 41 and spacing groove 23 is the sawtooth structure, can be when stopper 41 is connected with spacing groove 23, play reinforced (rfd) effect to axis body 1 and insulating cover 2, prevent that insulating cover 2 from taking place the phenomenon of the rotation of skidding on the axis body 1, the dismouting maintenance operation of insulating cover 2 of also being convenient for simultaneously.

As shown in fig. 1, fig. 5 and fig. 6, the fastening ring further comprises a fastening ring 3, the inner wall of the fastening ring 3 is provided with a guide groove 31, the guide groove 31 is sleeved on a guide block 42 arranged on the bearing body 4 along the axial direction of the bearing body, and is contacted with the end part of the insulating sleeve 2, the cross sections of the guide block 42 and the guide groove 31 are both of a semicircular structure, so that when the guide block 42 is sleeved in the guide groove 31, the guide block plays a role in guiding the sleeve-arranged position of the fastening ring 3, the operation of the sleeve-arranged fastening ring 3 is facilitated, and meanwhile, the fastening ring 3 and the bearing body 4 are also strengthened, and the phenomenon that the fastening ring 3 slips on the bearing body 4 is prevented.

As shown in fig. 5 and 6, the arc-shaped end of the fastening ring 3 is provided with a through hole 33, a pin 32 is arranged in the through hole 33 in a penetrating manner, the pin 32 extends into a pin groove 43 formed in the guide block 42 and is fixed, the outer wall of the pin 32 is provided with threads, the inner wall of the pin groove 43 is provided with a thread groove, the pin 32 is screwed with the inner wall threads of the pin groove 43 after penetrating through the through hole 33, so that the fastening ring 3 and the bearing body 4 are reinforced, the phenomenon that the fastening ring 3 shakes or loosens due to the centrifugal force generated when the fastening ring 3 rotates by the rotation of the insulating sleeve 2 is prevented, and the stability of the positions of the insulating sleeve 2 and the fastening ring 3 is ensured.

As shown in fig. 6, the end of the limiting block 41 is located on the same straight line with the axial lead of the guide block 42, the cross section of the limiting block 41 is larger than the cross sectional area of the guide block 42, and when the insulating sleeve 2 is sleeved along the surface of the limiting block 41, the inside of the insulating sleeve 2 does not contact with the outer wall of the guide block 42, so that the guide block 42 is prevented from blocking the sleeving process of the insulating sleeve 2, and the flexibility of the dismounting process of the insulating sleeve 2 is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an insulating pivot for miniature motor, includes axis body (1), its characterized in that:

a bearing body (4) is arranged at the end part of the shaft body (1), and a connecting body (5) is arranged at the end part of the bearing body (4);

the bearing body (4) is sleeved with an insulating sleeve (2), and the insulating sleeve (2) is connected with the shaft body (1) in a moving mode along the axial direction of the shaft body (1) through a connecting assembly or is connected with the bearing body (4) in a moving mode along the axial direction of the bearing body (4).

2. The insulated rotating shaft for the micro motor according to claim 1, wherein: the connecting assembly comprises an assembling block (21) arranged at the end part of the insulating sleeve (2), and the assembling block (21) is assembled with the end part of the shaft body (1) in an inserting manner along an assembling groove (11) formed in the axial direction of the shaft body in an inserting manner.

3. The insulated rotating shaft for the micro motor according to claim 1, wherein: the connecting assembly comprises a plug (22) arranged at the end part of the insulating sleeve (2), and the plug (22) is connected with the end part of the shaft body (1) in an inserting manner along a slot (12) which is axially formed.

4. The insulated rotating shaft for the micro motor according to claim 1, wherein: the connecting assembly comprises a limiting groove (23) formed in the inner wall of the insulating sleeve (2), and the limiting groove (23) is sleeved on the bearing body (4) and moves along a limiting block (41) axially arranged on the bearing body.

5. The insulated rotating shaft for the micro motor according to claim 1, wherein: also comprises a fastening ring (3);

the inner wall of the fastening ring (3) is provided with a guide groove (31), and the guide groove (31) is sleeved on a guide block (42) which is arranged on the bearing body (4) along the axial direction of the bearing body and is contacted with the end part of the insulating sleeve (2).

6. The insulated rotating shaft for the micro motor according to claim 5, wherein: the arc-shaped end of the fastening ring (3) is provided with a through hole (33), a pin (32) penetrates through the through hole (33), and the pin (32) extends into a pin groove (43) formed in the guide block (42) and is fixed.

7. The insulated rotating shaft for the micro motor according to claim 4, wherein: the end part of the limiting block (41) and the shaft axis of the guide block (42) are positioned on the same straight line, and the cross section of the limiting block (41) is larger than the cross section area of the guide block (42).