CN209844790U - Rotor of disc type motor - Google Patents

Abstract

The utility model provides a rotor of disk motor, this rotor includes holder (1), fibre ring (3) and spacing ball (4), holder (1) is used for installing magnet steel (2), fibre ring (3) cover is on holder (1), set up first recess on the top surface of a plurality of spokes (11) of holder (1), the position that the inner wall of fibre ring (3) corresponds first recess is provided with second recess (31), spacing ball (4) are arranged in the ball chamber of compriseing first recess and second recess (31), the surface of spacing ball (4) is laminated and is bonded by glue with the inner wall in ball chamber. The utility model provides a holder and the fibrous ring of rotor are connected reliably, are difficult for becoming invalid, are favorable to improving the security of rotor.

Description

Rotor of disc type motor

Technical Field

The utility model relates to a disc motor technical field especially relates to a rotor of disc motor.

Background

The rotor of the disk motor is a flat disk-shaped structure, generally, fan-shaped magnetic steel is bonded on clamping positions among spokes of a retainer through glue, and a fiber ring is sleeved on the outer edge of the retainer so as to overcome the centrifugal force generated by the magnetic steel in the high-speed rotation process. Because the fiber ring is limited by the material of the fiber ring, the fiber ring is not suitable to be fixedly connected with the retainer in an interference fit manner, so the retainer is fixedly connected with the fiber ring mainly by glue, however, in the existing rotor, the connecting structure of the retainer and the fiber ring has a great failure risk, and the safety of the rotor is affected, so how to improve the connecting structure of the retainer and the fiber ring to improve the safety of the rotor becomes a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a rotor of disk motor, the holder and the fibrous ring of this rotor are connected reliably, are difficult for becoming invalid, are favorable to improving the security of rotor.

In order to achieve the above object, the utility model provides a following technical scheme:

a rotor of a disc motor comprising:

the holder is used for mounting magnetic steel, and first grooves are formed in the top surfaces of a plurality of spokes of the holder;

the fiber ring is sleeved on the retainer, and a second groove is formed in the position, corresponding to the first groove, of the inner wall of the fiber ring;

and the limiting ball is positioned in a ball cavity formed by the first groove and the second groove, and the surface of the limiting ball is attached to the inner wall of the ball cavity and is bonded by glue.

Optionally, in the above rotor, the fiber ring is made by winding a fiber tape.

Optionally, in the rotor, the limiting ball is made of metal.

Optionally, in the rotor, the limiting ball is a steel ball.

According to the technical scheme, the utility model provides an among disc motor's the rotor, a first recess has been seted up on the top surface for installing a plurality of spokes of magnet steel's holder, and the position that the inner wall of fibrous ring corresponds first recess is provided with the second recess, both constitute the ball chamber jointly, this ball intracavity is installed spacing ball, spacing ball's surface and the inner wall laminating in ball chamber are bonded by glue, consequently after holder and fibrous ring assembly, spacing ball will restrict the axial relative motion between holder and the fibrous ring, thereby improve the reliability that holder and fibrous ring are connected, it can be seen from this, the utility model provides an among the rotor, the holder is difficult for becoming invalid with being connected of fibrous ring, therefore the security of rotor is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a perspective view of a rotor of a disc motor according to an embodiment of the present invention;

fig. 2 is an exploded view of a rotor provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the annulus fibrosus 3 of FIG. 2;

FIG. 4 is an elevation view of FIG. 2 with the annulus fibrosus 3 removed;

fig. 5 is a sectional view of the cage 1 of fig. 4;

FIG. 6 is a perspective view of a tooling for making the annulus 3 of FIG. 3;

fig. 7 is a cross-sectional view of the tooling shown in fig. 6.

Labeled as:

1. a holder; 11. spokes; 111. a first groove; 2. magnetic steel; 3. a fibrous ring; 31. a second groove; 4. a limiting ball; 5. a movable rod; 6. looping a loop; 7. a bolt; 8. side dams.

Detailed Description

For the sake of understanding, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, fig. 1 is a perspective view of a rotor of a disc motor according to an embodiment of the present invention, and fig. 2 is an exploded view of the rotor according to an embodiment of the present invention.

The embodiment of the utility model provides a disc motor's rotor includes holder 1, magnet steel 2, fibre ring 3 and spacing ball 4, and wherein, form the screens that are used for installing magnet steel 2 between each spoke 11 of holder 1, and the fibre ring 3 cover is on holder 1, offers first recess 111 on the top surface of a plurality of spokes 11 of holder 1, as shown in fig. 5, "top surface" means the face relative with the inner wall of fibre ring 3 of spoke 11. The inner wall of the annulus fibrosus 3 is provided with a second groove 31 at a position corresponding to the first groove 111, as shown in fig. 3. The limiting ball 4 is positioned in a ball cavity formed by the first groove 111 and the second groove 31, and the surface of the limiting ball 4 is attached to the inner wall of the ball cavity and is bonded by glue.

In a specific practical application, the fiber ring 3 may be made of a fiber tape by winding, and the limiting ball 4 may be made of metal, for example, the limiting ball 4 may be a steel ball. For uniform force, the first grooves 111 are generally evenly distributed around the axis of the cage 1, for example, in the embodiment shown in fig. 5, the number of the first grooves 111 is 4, and the first grooves are evenly distributed at intervals of 90 °.

Because first recess 111 and second recess 31 have constituted the ball chamber jointly, and spacing ball 4 surface and the inner wall laminating in this ball chamber and bond by glue, so after holder 1 and fibre ring 3 assemble, spacing ball 4 will restrict the axial relative motion between holder 1 and the fibre ring 3 to improve the reliability that holder 1 and fibre ring 3 are connected, it is thus visible, the utility model provides an in the rotor, holder 1 is difficult for becoming invalid with fibre ring 3's connection, therefore the security of rotor is higher.

The following describes a method for manufacturing a rotor of the present invention, which specifically includes:

the top surfaces of a plurality of spokes 11 of the retainer 1 for mounting the magnetic steel 2 are provided with first grooves 111, and the top surfaces are the surfaces of the spokes 11 opposite to the inner wall of the fiber ring 3;

manufacturing a second groove 31 on the inner wall of the fiber ring 3 corresponding to the first groove 111;

when the fiber ring 3 and the retainer 1 are assembled, the limiting ball 4 is firstly adhered to the first groove 111 by glue, a part of the limiting ball 4 is exposed out of the first groove 111, then the glue is used for coating the top surface of the spoke 11 and the surface of the limiting ball 4, and finally the fiber ring 3 is pressed on the retainer 1, so that the second groove 31 wraps the limiting ball 4.

In a specific practical application, in order to facilitate the press-fitting of the fiber ring 3, the second groove 31 is generally made smaller than the first groove 111, i.e. the majority of the limiting ball 4 is located in the first groove 111, and the smaller half is exposed outside the first groove 111 and is enclosed by the second groove 31.

When the fiber ring 3 is made by winding a fiber belt, a tool as shown in fig. 6 and 7 can be used to make the second groove 31 on the inner wall of the fiber ring 3, the tool includes the belt winding ring 6 and the side baffles 8 located at both sides of the belt winding ring 6, the two side baffles 8 and the belt winding ring 6 are fixedly connected by the bolt 7, a belt winding groove is formed between the two side baffles 8, the bottom of the belt winding groove is the outer circumference of the belt winding ring 6, the movable rod 5 is installed at the position of the belt winding ring 6 corresponding to the second groove 31, and the specific way of making the second groove 31 is as follows:

when the fiber band is wound by the tool to manufacture the fiber ring 3, the spherical end of the movable rod 5 extends out of the outer peripheral surface of the winding ring 6 and fixes the movable rod 5, then the fiber band is wound on the winding ring 6, the movable rod 5 penetrates through the inner peripheral surface and the outer peripheral surface of the winding ring 6 along the radial direction of the winding ring 6, the spherical end of the movable rod 5 is consistent with the shape of the second groove 31, and the fiber band is wound around the position of the movable rod 5 to form the second groove 31.

And after the fiber tape is wound to a certain thickness, putting the fiber tape into an oven for curing. When the tool is disassembled, the movable rod 5 is moved towards the center of the belt winding ring 6, so that the spherical end of the movable rod 5 is retracted below the outer peripheral surface of the belt winding ring 6, and then the bolt 7 and the two side baffles 8 are disassembled, so that the fiber ring 3 with the second groove 31 is manufactured.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A rotor of a disc motor, comprising:

the magnetic steel fixing device comprises a holder (1) for mounting magnetic steel (2), wherein first grooves (111) are formed in the top surfaces of a plurality of spokes (11) of the holder (1);

the fiber ring (3) is sleeved on the retainer (1), and a second groove (31) is formed in the position, corresponding to the first groove (111), of the inner wall of the fiber ring (3);

the limiting ball (4) is positioned in a ball cavity formed by the first groove (111) and the second groove (31), and the surface of the limiting ball (4) is attached to the inner wall of the ball cavity and is bonded by glue.

2. The rotor according to claim 1, characterized in that the fiber ring (3) is made of a fiber tape winding.

3. The rotor according to claim 2, characterized in that the limiting ball (4) is made of metal.

4. A rotor according to claim 3, characterized in that the limiting balls (4) are steel balls.