CN214958960U

CN214958960U - Reliability connection structure of motor rotor shell and rotating shaft

Info

Publication number: CN214958960U
Application number: CN202121010846.5U
Authority: CN
Inventors: 郑奎
Original assignee: Dongguan Shengtu New Energy Technology Co ltd
Current assignee: Dongguan Shengtu New Energy Technology Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-30
Anticipated expiration: 2031-05-12

Abstract

The utility model provides a pair of reliability connection structure of motor rotor shell and pivot, contain the rotor shell, the apparatus further comprises a rotating shaft, rotor shell top is provided with the anticreep connecting piece, the anticreep connecting piece is including the spacing dish of taking location tooth and locating the cylindricality connector of spacing dish downside, rotor shell top is provided with the cusp cell body, rotor shell center runs through the through-hole that is provided with and cusp cell body intercommunication, the pivot includes axle core and location tray, be equipped with the location cell body on the roof in the rotor shell, be equipped with the axle core screw on the cylindricality connector, axle core screw and axle core top threaded connection, location tray butt is on the location cell body. When assembling the pivot on the rotor shell, press the anticreep connecting piece tightly on the cusp cell body earlier, aim at the axle core screw with the axle core and insert and rotatory screwing up, spacing dish and location tray butt respectively are at cusp cell body and constant head tank side, and anticreep connecting piece and pivot can't rotate, can prevent effectively that rotor shell and pivot junction from loosening and taking off, guarantee rotor shell gyration equilibrium, improve the motor reliability.

Description

Reliability connection structure of motor rotor shell and rotating shaft

Technical Field

The utility model relates to a motor indicates a motor rotor shell and reliable connection structure of pivot especially.

Background

The motor mainly comprises a stator and a rotor, wherein the rotor mainly comprises a rotor shell, a rotating shaft and a magnet. In the production process, firstly, a block of arc-shaped magnet is adhered and fixed on the inner wall of the rotor shell, and then the rotating shaft is inserted into the shaft hole of the rotor shell. Under the long-time high-speed gyration of motor, along with the influence of factors such as motor generate heat and gyration torsion, some deformations may appear in motor part, the part life-span descends, the not hard up condition can appear in the junction of rotor shell shaft hole and pivot, will lead to rotor shell gyration unstability, noise and vibration aggravation, the condition that the rotor shell drops from the pivot appears even in the time of seriously, there is very big potential safety hazard, consequently, it improves to be necessary to the connection structure between rotor shell and the pivot.

Disclosure of Invention

The utility model aims to solve the problem that a reliability connection structure of motor rotor shell and pivot is provided, improves the joint strength between rotor shell and the pivot, avoids rotor shell and pivot junction the condition that the pine takes off to appear, improves security and the reliability that the motor used.

The reliability connecting structure of the motor rotor shell and the rotating shaft comprises a rotor shell and a rotating shaft, wherein the top of the rotor shell is provided with an anti-falling connecting piece, the anti-falling connecting piece comprises an integrally punched limiting disc and a cylindrical connecting head arranged at the center of the bottom of the limiting disc, positioning teeth are uniformly distributed on the outer edge of the limiting disc, the top of the rotor shell is provided with a tooth-shaped groove body matched with the shape of the limiting disc, the center of the rotor shell is provided with a through hole communicated with the tooth-shaped groove body in a penetrating way, the through hole is matched with the shape of the cylindrical connecting head, the limiting disc and the cylindrical connecting head are respectively arranged on the tooth-shaped groove body and the through hole, the rotating shaft comprises an integrally punched shaft core and a positioning tray arranged at the outer edge of the shaft core, the top wall in the rotor shell is provided with a positioning groove body matched with the positioning tray in shape, the cylindrical connecting head is provided with a shaft core screw hole, and the shaft core screw hole is in threaded connection with the top end of the shaft core, the positioning tray is abutted against the positioning groove body.

Preferably, the positioning groove body side wall is provided with an internal thread, and the positioning tray outer ring is provided with an external thread matched with the internal thread.

Preferably, a limiting ring is integrally stamped at the top end of the inner ring of the rotor shell, a plurality of magnet positioning parting beads are uniformly distributed on the inner ring of the rotor shell, and the magnet positioning parting beads extend to the top end face of the limiting ring from the outlet end face of the rotor shell.

Preferably, one end face of the magnet positioning parting strip is tangent to the inner ring of the limiting ring, and two sides of one end face of the magnet positioning parting strip are provided with chamfer angles.

Preferably, a plurality of heat dissipation ribs are uniformly distributed between the inner ring of the limiting ring and the inner top wall of the rotor shell.

Preferably, the heat dissipating ribs are triangular in shape.

The utility model has the advantages that: the utility model provides a reliability connection structure of motor rotor shell and pivot, set up unique assembly structure, when assembling the pivot on the rotor shell, press the anticreep connecting piece tightly on cusp cell body earlier, aim at the axle core screw with the axle core and insert and rotatory screwing up, realize the high-speed joint of pivot and rotor shell, spacing dish and location tray butt respectively are in cusp cell body and constant head tank side, anticreep connecting piece and the unable rotation of pivot, can prevent effectively that rotor shell and pivot junction pine from taking off, guarantee rotor shell gyration equilibrium, improve motor safety in utilization and reliability.

Drawings

Fig. 1 illustrates an exploded view of the present invention.

Fig. 2 illustrates a schematic cross-sectional structure of the present invention.

Fig. 3 illustrates an outline structure schematic diagram of the rotor case of the present invention.

The reference numbers illustrate: the rotor comprises a rotor shell 1, a tooth-shaped groove body 10, a through hole 100, a positioning groove body 101, a limiting ring 102, a magnet positioning partition bar 103, a heat dissipation rib 104, a rotating shaft 2, a shaft core 20, a positioning tray 200, an anti-falling connecting piece 3, a limiting disc 30, positioning teeth 300, a cylindrical connector 31 and a shaft core screw hole 310.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments.

All other embodiments of the person skilled in the art, which are obtained without inventive work on the basis of the described embodiments of the present disclosure, are within the scope of protection of the present disclosure.

Refer to fig. 1-3.

The utility model provides a motor rotor shell and rotating shaft reliability connecting structure, which comprises a rotor shell 1 and a rotating shaft 2, wherein the top of the rotor shell 1 is provided with an anti-disengaging connecting piece 3, the anti-disengaging connecting piece 3 comprises an integrally punched limiting disc 30 and a cylindrical connecting head 31 arranged at the center of the bottom of the limiting disc 30, the outer edge of the limiting disc 30 is uniformly distributed with positioning teeth 300, the top of the rotor shell 1 is provided with a dentate groove body 10 matched with the shape of the limiting disc 30, the center of the rotor shell 1 is penetrated with a through hole 100 communicated with the dentate groove body 10, the through hole 100 is matched with the shape of the cylindrical connecting head 31, the limiting disc 30 and the cylindrical connecting head 31 are respectively arranged on the dentate groove body 10 and the through hole 100, the rotating shaft 2 comprises an integrally punched shaft core 20 and a positioning tray 200 arranged at the outer edge of the shaft core 20, the inner top wall of the rotor shell 1 is provided with a positioning groove body 101 matched with the shape of the positioning tray 200, the cylindrical connecting head 31 is provided with a shaft core screw hole 310, the axle core screw hole 310 is connected with the top end of the axle core 20 through threads, and the positioning tray 200 abuts against the positioning groove body 101.

During specific assembly, the anti-falling connecting piece 3 is firstly placed in the tooth-shaped groove body 10 and is pressed tightly, the cylindrical connector 31 extends into the through hole 100, the outer edge of the tooth-shaped groove body 10 is provided with a shape matched with the positioning teeth 300, and the positioning teeth 300 are embedded with the tooth-shaped groove body 10 to prevent the anti-falling connecting piece 3 from rotating. The top end of the shaft core 20 is aligned with the shaft core screw hole 310 and is inserted and screwed up in a rotating mode, the threaded connection of the shaft core screw hole 310 and the shaft core 20 is achieved, the limiting disc 30 and the positioning tray 200 abut against the side of the toothed groove body 10 and the positioning groove body 101 respectively at the moment, the anti-falling connecting piece 3 and the rotating shaft 2 cannot rotate, the joint of the rotor shell 1 and the rotating shaft 2 can be effectively prevented from loosening, the rotary balance of the rotor shell 1 is guaranteed, and the use safety and the reliability of the motor are improved.

Based on above-mentioned embodiment, location cell body 101 lateral wall is provided with the internal thread, and location tray 200 outer lane is provided with the external screw thread that matches with the internal thread, and when axle core 20 and axle core screw 310 threaded connection, location tray 200 also threaded connection improves the joint strength between pivot 2 and the rotor shell 1 on the location cell body 101, prevents that the rotor shell 1 from taking off with the pivot 2 junction appearance pine.

Based on the above embodiment, the top end of the inner ring of the rotor shell 1 is integrally stamped with the limit ring 102, the inner ring of the rotor shell 1 is uniformly distributed with a plurality of magnet positioning spacers 103, and the magnet positioning spacers 103 extend from the outlet end face of the rotor shell 1 to the top end face of the limit ring 102. The width of the limiting ring 102 is set to be consistent with the thickness of the arc-shaped magnet, the arc length of the two adjacent magnet positioning parting strips 103 on the inner ring of the rotor shell 1 is consistent with the arc length of the arc-shaped magnet, the length of the magnet positioning parting strips 103 is consistent with the height of the arc-shaped magnet, and the top surfaces of the two adjacent magnet positioning parting strips 103 and the limiting ring 102 enclose an arc-shaped magnet accommodating groove. When circling in assembling rotor shell 1 with the arc magnetite, inlay each arc magnetite and adorn in the arc magnetite mounting groove of difference, can guarantee that each arc magnetite evenly distributed circles in rotor shell 1, ensure that the arc magnetite assembly is firm, improve rotor shell 1 gyration equilibrium, reduce motor gyration noise and vibration.

Based on the above embodiment, an end surface of the magnet positioning division bar 103 is tangent to the inner ring of the limit ring 102, and both sides of the end surface of the magnet positioning division bar 103 are provided with the chamfer angles, so that the arc-shaped magnet can be conveniently embedded into the arc-shaped magnet installation groove, and the assembly stability of the arc-shaped magnet is improved.

Based on the above embodiment, a plurality of heat dissipation ribs 104 are uniformly distributed between the inner ring of the limit ring 102 and the inner top wall of the rotor shell 1. When the rotor housing 1 is driven to rotate, the heat dissipating ribs 104 form an air flow in the rotor housing 1, and accelerate the dissipation of heat in the rotor housing 1.

Based on the above embodiment, the heat dissipation ribs 104 are triangular, and the triangular heat dissipation ribs 104 are disposed at the inner edge of the limiting ring 102 to perform a position avoidance function, so as to prevent the winding copper wire from being damaged and causing short circuit due to the contact between the heat dissipation ribs 104 and the stator winding.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a motor rotor shell and reliability connection structure of pivot, contains rotor shell (1), pivot (2), its characterized in that, rotor shell (1) top is provided with anticreep connecting piece (3), anticreep connecting piece (3) include spacing dish (30) of integrative punching press and set up in cylindricality connector (31) at spacing dish (30) bottom center, spacing dish (30) outer edge evenly distributed has positioning teeth (300), rotor shell (1) top be provided with spacing dish (30) shape matching's dentate cell body (10), rotor shell (1) center run through be provided with through-hole (100) that communicate with dentate cell body (10), through-hole (100) with cylindricality connector (31) shape matches, spacing dish (30) with cylindricality connector (31) set up respectively on dentate cell body (10) and through-hole (100), pivot (2) including the axle core (20) of integrative punching press with set up in location tray (200) on axle core (20) outer edge, be provided with on rotor shell (1) the roof with location groove body (101) that location tray (200) shape matches, be provided with axle core screw (310) on cylindricality connector (31), axle core screw (310) with axle core (20) top threaded connection, location tray (200) butt is in on the location groove body (101).

2. The structure for reliably connecting the rotor shell and the rotating shaft of the motor as claimed in claim 1, wherein the side wall of the positioning groove body (101) is provided with an internal thread, and the outer ring of the positioning tray (200) is provided with an external thread matched with the internal thread.

3. The structure of claim 1, wherein a limit ring (102) is integrally stamped at the top end of the inner ring of the rotor housing (1), a plurality of magnet positioning spacers (103) are uniformly distributed on the inner ring of the rotor housing (1), and the magnet positioning spacers (103) extend from the outlet end face of the rotor housing (1) to the top end face of the limit ring (102).

4. The structure of claim 3, wherein an end face of the magnet positioning division bar (103) is tangent to the inner ring of the limit ring (102), and both sides of an end face of the magnet positioning division bar (103) are provided with an inverted angle.

5. The reliable connection structure of the motor rotor shell and the rotating shaft as claimed in claim 3, wherein a plurality of heat dissipation ribs (104) are uniformly distributed between the inner ring of the limiting ring (102) and the inner top wall of the rotor shell (1).

6. The reliable connection structure of the motor rotor shell and the rotating shaft as claimed in claim 5, wherein the heat dissipation ribs (104) are triangular.