CN211790984U

CN211790984U - Magnetic shoe single-layer stator radial ring

Info

Publication number: CN211790984U
Application number: CN202020148510.4U
Authority: CN
Inventors: 沈军民
Original assignee: Jinhua Yibo Technology Co ltd
Current assignee: Jinhua Yibo Technology Co ltd
Priority date: 2020-01-31
Filing date: 2020-01-31
Publication date: 2020-10-27
Anticipated expiration: 2030-01-31

Abstract

The utility model discloses a magnetic shoe single-layer stator radial ring, which comprises magnetic shoes made of the same material and a fixing device for fixing the magnetic shoes, wherein the magnetic shoes are in even number pairs, and the magnetic shoes in the even number pairs surround to form a ring shape; the inner edges of the left and right ends of the magnetic shoe are provided with inner chamfers. The utility model discloses a radial ring of individual layer is assembled into to the magnetic shoe of the same material, simple structure, and production is convenient, can the mode production of standard part, no longer needs the die sinking, is showing reduce cost and production complexity.

Description

Magnetic shoe single-layer stator radial ring

Technical Field

The utility model relates to the field of electric machines, concretely relates to radial ring of magnetic shoe individual layer stator.

Background

The motor has wide industrial application, can quickly convert electric energy into mechanical energy, and is environment-friendly and efficient. The motor is composed of stator, rotor, brush and shell. The stator is a stationary part of the motor and is fixed on the motor shell to provide a magnetic field for the motor. At present, a small universal motor stator usually adopts a ferrite permanent magnet magnetic shoe pair, but the conventional stator adopting the ferrite permanent magnet magnetic shoe pair has a lot of inconvenience in the production of the magnetic shoes and the installation of the motor. In the magnetic shoe production link, a magnetic shoe supplier needs to open the mold according to the parameter requirements of a client motor and then produces a corresponding magnetic shoe, and the slight change of the magnetic shoe structure needs the magnetic shoe supplier to open another mold, so that the mold opening and the mold management greatly improve the production cost of the magnetic shoe; meanwhile, in order to ensure that the sharp corner is not easy to damage in the assembling process of the magnetic shoe, each side line of the magnetic shoe needs to be chamfered, and the production efficiency is greatly influenced as shown in (A) of figure 1; in the installation process of the magnetic shoe pair, a motor manufacturer surrounds the magnetic shoe sheets into a ring shape along the rotor, and the magnetic shoe sheets are fixedly spliced by glue. Therefore, there is a need for improvement of the prior art, and a single-layer radial ring of a stator of an electric machine, which is composed of magnetic shoes, is used as a stator of the electric machine, thereby simplifying the production mode and reducing the production cost to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide the radial ring of efficient magnetic shoe individual layer stator.

In order to solve the technical problem, the utility model provides a magnetic shoe single-layer stator radial ring, which comprises magnetic shoes made of the same material and a fixing device for fixing the magnetic shoes, wherein the magnetic shoes are in even number pairs, and the magnetic shoes in the even number pairs surround to form a ring shape; the inner edges of the left and right ends of the magnetic shoe are provided with inner chamfers.

The magnetic shoe is arc-shaped.

As an improvement of the radial ring of the magnetic shoe single-layer stator of the utility model: the magnetic shoe is a magnetic shoe I, and the fixing device is a curing agent layer;

the inner edges of the left and right ends of each magnetic shoe I are provided with inner chamfers, and the contact parts of the left and right ends of each adjacent magnetic shoe I are provided with curing agent layers.

As another improvement of the radial ring of the magnetic shoe single-layer stator of the utility model: the magnetic shoe is a magnetic shoe I, and the fixing device comprises a wave-shaped spring and a shell;

the inner edges of the inner sides of the left end and the right end of each magnetic tile I are provided with inner chamfers, a circular ring formed by enclosing the magnetic tiles I is sleeved in the inner cavity of the shell, and the outer surface of each magnetic tile I is attached to the inner surface of the shell;

a gap is arranged between every two adjacent magnetic tiles I, a wave-shaped spring is arranged at the gap, and the magnetic tiles I are fixed by the tension of the wave-shaped spring and the support of the shell.

As another improvement of the magnetic shoe single-layer stator radial ring of the present invention: the magnetic shoe is a magnetic shoe II, and the fixing device comprises an inner surface annular buckle and an outer surface annular buckle;

inner chamfers are arranged at the inner side edges of the left end and the right end of the magnetic shoe II, an inner groove is arranged on the inner surface of the magnetic shoe II, and an outer groove is arranged on the outer surface of the magnetic shoe II; an inner groove on the encircling and synthesizing annular magnetic shoe II is encircled to form an inner groove ring; an outer groove on the encircling and synthesizing annular magnetic shoe II is encircled to form an outer groove ring;

an inner surface annular buckle matched with the inner groove ring is arranged in the inner groove ring; an outer surface annular buckle matched with the outer groove ring is arranged in the outer groove ring; the inner surface annular buckle and the outer surface annular buckle are respectively provided with a buckle notch; and the magnetic shoe II is fixed by the elasticity of the inner surface annular buckle and the outer surface annular buckle.

As another improvement of the magnetic shoe single-layer stator radial ring of the present invention: the magnetic tile is a magnetic tile I, and inner chamfers are arranged at the inner side edges of the left end and the right end of the magnetic tile I; the fixing device is a bracket assembly I, the bracket assembly I comprises 2 circular brackets which are arranged in parallel from top to bottom, the axial leads of the 2 circular brackets are coincided, and bracket notches are formed in the circular brackets;

trapezoidal axial upright columns are uniformly and vertically fixed in the inner cavity of the circular ring bracket along the radial direction; the number of the trapezoidal axial upright columns is equal to that of the magnetic shoes I; each trapezoidal axial upright post is fixedly connected with 2 circular ring supports; each two trapezoidal axial upright columns and the local circular ring support positioned between the two trapezoidal axial upright columns form a clamping groove in a surrounding manner, and the outer surface of the magnetic shoe I axially inserted into the clamping groove is matched with the inner surface of the circular ring support; the left end face and the right end face of the magnetic shoe I are respectively matched with the side faces of the adjacent trapezoidal axial upright posts.

As the utility model discloses a radial ring's of magnetic shoe individual layer stator improvement: the short bottom edge end of the trapezoid axial upright post is fixedly connected with the circular ring support, and the long bottom edge end of the trapezoid axial upright post faces to the axial lead of the circular ring support.

As another improvement of the magnetic shoe single-layer stator radial ring of the present invention: the magnetic shoe is a magnetic shoe III, and the fixing device is a bracket assembly II;

the bracket component II comprises 2 annular brackets which are arranged in parallel from top to bottom, the axial leads of the 2 annular brackets are overlapped, and a triangular prism-shaped axial upright post is arranged between the upper and lower adjacent annular brackets; the upper end and the lower end of the triangular prism-shaped axial upright post are respectively fixedly connected with two adjacent annular supports;

the bracket component II is positioned in a circular ring formed by enclosing the magnetic shoe III;

the left end and the right end of the magnetic shoe III are respectively provided with an inner chamfer and an outer chamfer, and the outer chamfer is matched with one side surface of the triangular prism-shaped axial upright post; arranging a solid glue layer at the joint of the outer chamfer and the triangular axial upright post;

the upper end and the lower end of the inner surface of the magnetic shoe III are respectively attached to the two annular supports; and a solid glue layer is arranged at the joint of the magnetic shoe III and the annular bracket.

The utility model has the following technical advantages:

1. the magnetic shoes made of the same material are assembled into a single-layer radial ring, the structure is simple, the production is convenient, the magnetic shoes can be produced in a standard component mode, the die opening is not needed, and the cost and the production complexity are obviously reduced;

2. the fixed magnetic shoes are assembled into a single-layer radial ring in multiple modes, the structure is simple, the cost is low, and the magnetic shoe can adapt to various application scenes;

3. the improvement of the magnetic shoe chamfering process reduces the working procedures, improves the production efficiency and reduces the cost;

4. the magnetic field distribution of the radial ring structure is very close to the standard sine wave, so that the magnetic field required by the motor to work can be well met.

Drawings

The following describes the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of an edge chamfer and a magnetic shoe I1 of a prior art magnetic shoe;

in the context of figure 1 of the drawings,

(A) is a schematic diagram of edge chamfering of the existing magnetic shoe;

(B) is a schematic view of a magnetic tile I1;

FIG. 2 is a schematic view of glue bonding a single layer stator radial ring as described in example 1;

FIG. 3 is a schematic view of a spring-fixed single layer stator radial ring of embodiment 2;

FIG. 4 is a schematic view of a hub fixed single layer stator radial ring according to embodiment 3;

FIG. 5 is an enlarged schematic structural view of the magnetic shoe II 5 in FIG. 4;

FIG. 6 is an enlarged schematic view of the inner surface annular snap 61 of FIG. 4;

FIG. 7 is a schematic view of the bracket of embodiment 4 for fixing a single-layer stator radial ring (the magnetic shoe I1 is omitted from FIG. 7 for simplicity of drawing);

FIG. 8 is a schematic top view of FIG. 7;

FIG. 9 is a schematic view of a bracket holding a single-layer stator radial ring according to embodiment 5 (for simplicity of the drawing, only one tile III 8 is shown in FIG. 9);

FIG. 10 is an enlarged, fragmentary schematic view of bracket assembly II of FIG. 9;

fig. 11 is a schematic structural view of the magnetic shoe iii 8 in fig. 9.

Detailed Description

The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.

In order to simplify the structural schematic diagram and the description, the following embodiments of the present invention use 2 pairs of magnetic shoes as a specific example, and further describe the radial ring of the single-layer stator in detail, it should be noted that the scope of the present invention is not limited to the single-layer radial ring having only two pairs of magnetic shoes. The utility model discloses an adopt the circular-arc magnetic shoe of the same material to adopt different fixed connection modes to enclose and synthesize annular individual layer stator radial ring, the logarithm of radial ring magnetic shoe is generally right for the even number, if 2, 4, 6.

Embodiment 1, a radial ring of a single-layer stator of a magnetic shoe, which is a radial ring of a single-layer stator of a motor bonded by glue, as shown in fig. 2, includes two pairs of magnetic shoes I1 and a fixing device, where the fixing device is a curing agent layer 2.

The magnetic shoe I1 is only provided with inner chamfers 11 at the inner side edges of the left and right ends, as shown in (B) of figure 1, the left and right ends of four magnetic shoes I1 are sequentially connected end to enclose into a circular ring shape, and a curing agent layer 2 is arranged at the contact part of the end to end connection, so that a single-layer stator radial ring is formed and used as a stator component of the motor.

The inner chamfer 11 can prevent uneven magnetic field distribution caused by damage to the corners of the magnetic shoe I1; the magnetic shoe I1 can be provided in the form of a standard piece.

Comparative example 1, the magnetic shoe I1 in example 1 is changed into the conventional magnetic shoe existing at present, and chamfers are arranged at all edges; namely, chamfers are arranged at the edges of the inner side and the outer side of the left end and the right end, as shown in (A) of figure 1; the chamfering process is complex and the production cost is high; in addition, in the running process of the motor, the magnetic shoe may fall off or break under the conditions of vibration, high temperature and the like, and the service life of the motor is influenced.

Compared with the subsequent comparative example 1, the embodiment 1 of the present invention only needs to provide the inner chamfer 11 at the inner side edges of the left and right ends of the magnetic shoe I1, unlike the conventional magnetic shoe that needs to be chamfered at all edges, as shown in fig. 1 (a), which reduces the process and saves the cost.

Embodiment 2, a radial ring of a single-layer stator of magnetic shoes, which is a radial ring of a single-layer stator of a spring-fixed motor, as shown in fig. 3, comprises two pairs of magnetic shoes I1 and a fixing device, wherein the fixing device comprises a wave-shaped spring 3 and a shell 4.

The magnetic shoe I1 is constructed as described in embodiment 1, and the inner chamfers 11 are provided only at the inner side edges of the left and right ends. The four magnetic tiles I1 enclose a circular ring which is sleeved in the inner cavity of the shell 4, and the outer surface of each magnetic tile I1 is attached to the inner surface of the shell 4.

Gaps are arranged between the adjacent magnetic shoes I1, the wave-shaped spring 3 is arranged at the gaps, and the magnetic shoes I1 are fixed by utilizing the tension of the wave-shaped spring 3 and the support of the shell 4 to form a single-layer stator radial ring which is used as a stator component of the motor; the structure mode can buffer the expansion of the magnetic shoe after the motor works for a long time, and avoid the instability of the radial ring caused by the overheating of the curing agent as described in the subsequent comparative example 1.

Embodiment 3, a single-layer stator radial ring of magnetic shoe, is used for fixing a single-layer stator radial ring for a hub, as shown in fig. 4, is suitable for a single-layer stator radial ring of magnetic shoe with higher height, and comprises 2 pairs of magnetic shoes ii 5 and a fixing device, wherein the fixing device comprises an inner surface annular buckle 61 and an outer surface annular buckle 62.

The structure of the magnetic shoe II 5 is as shown in FIG. 5, inner chamfers 11 (like the magnetic shoe I1 in embodiment 1) are arranged at the inner side edges of the left and right ends of the magnetic shoe II 5, the left and right ends of the four magnetic shoes II 5 are sequentially connected end to form a circular ring, an inner groove 51 is arranged on the inner surface of the magnetic shoe II 5, and outer grooves 52 are respectively arranged at the upper and lower ends of the outer surface of the magnetic shoe II 5; 2, enclosing the inner grooves 51 on the magnetic shoes II 5 to form an inner groove ring; an inner surface annular buckle 61 matched with the inner groove ring is arranged in the inner groove ring; similarly, the outer grooves 52 on the 2 pairs of magnetic shoes II 5 are respectively enclosed to form 2 outer groove rings; and 1 outer surface annular buckle 62 matched with the outer groove ring is arranged in each outer groove ring.

The structure of the inner surface annular buckle 61 is as shown in fig. 6, and is annular with a buckle notch 611, and the buckle notch 611 facilitates the installation of the inner surface annular buckle 61; the outer surface annular catch 62 is identical in structure to the inner surface annular catch 61; by means of the elasticity of the inner surface annular buckle 61 and the outer surface

annular buckle

62, 2 pairs of magnetic shoes II 5 can be effectively fixed to form a magnetic shoe single-layer stator radial ring.

Embodiment 4, a radial ring of magnetic shoe individual layer stator for the radial ring of support fixed individual layer stator, as shown in fig. 7, including two pairs of magnetic shoes I1 and fixing device, fixing device is bracket assembly I, this bracket assembly I includes 2 ring support 71 from top to bottom parallel arrangement, the axial lead of 2 ring support 71 coincides, be equipped with support breach 72 (as described in fig. 8) on the ring support 71, support breach 72 is used for slowing down the effect of support and the magnetic shoe inflation that the motor operation overheated leads to.

4 trapezoidal axial columns 73 are uniformly and vertically fixed in the inner cavity of the circular ring support 71 along the radial direction (namely, the cross section of each trapezoidal axial column 73 is trapezoidal as shown in fig. 8), each trapezoidal axial column 73 is fixedly connected with 2 circular ring supports 71, the short bottom edge end of each trapezoidal axial column 73 is fixedly connected with the circular ring support 71, and the long bottom edge end of each trapezoidal axial column 73 faces the axial lead of the circular ring support 71; each two trapezoidal axial upright posts 73 and the local circular ring support 71 positioned between the two trapezoidal axial upright posts 73 form a clamping groove 74 in a surrounding way, the magnetic tile I1 can be axially inserted into the clamping groove 74, and the outer surface of the magnetic tile I1 is matched with the inner surface of the circular ring support 71; the left and right end surfaces of the magnetic shoe I1 are respectively matched with the side surfaces of the adjacent trapezoidal axial upright posts 73. So that the magnetic shoe I1 can be firmly fixed in the card slot 74.

The structure of the magnetic shoe I1 is as described in embodiment 1, that is, the inner chamfers 11 are provided only at the inner edges of the left and right ends. The ring support 71 has a certain height (i.e., axial height) to facilitate being supported against the magnetic shoe I1.

In this embodiment 4, after the magnetic shoe I1 and the bracket assembly I are made into a standard component, the installation is convenient and the production efficiency is high.

Embodiment 5, a magnetic shoe single-layer stator radial ring, which is a bracket fixing single-layer stator radial ring, as shown in fig. 9, includes two pairs of magnetic shoes iii 8 and a fixing device, where the fixing device is a bracket assembly II;

the enlarged partial schematic view of the bracket assembly II is shown in fig. 10, the bracket assembly II includes 2 annular brackets 91 arranged in parallel from top to bottom, and the axial lines of the 2 annular brackets 91 are coincident; a triangular prism-shaped axial column 92 is arranged between the upper and lower adjacent annular supports 91; that is, the cross section of the triangular prism-shaped axial column 92 is triangular, and the upper end and the lower end of the triangular prism-shaped axial column 92 are respectively fixedly connected with the two annular supports 91 which are adjacent up and down;

the thicknesses of the annular support 91 and the triangular prism-shaped axial column 92 are far smaller than that of the magnetic tile III 8;

the left end and the right end of the four magnetic tiles III 8 are sequentially connected end to form a circular ring, and the support assembly II is positioned in the circular ring formed by the four magnetic tiles III 8;

the left end and the right end of the magnetic shoe III 8 are respectively provided with an inner chamfer 81 and an outer chamfer 82, as shown in FIG. 11; that is, the magnet shoe iii 8 has an outer chamfer 82 in addition to the magnet shoe I1. The outer chamfer 82 coincides with one side of the triangular prism-shaped axial post 92 (i.e., one side of the triangle); the outer chamfers 82 at the left end and the right end of each magnetic shoe III 8 are respectively correspondingly contacted with two adjacent triangular prism-shaped axial columns 92; solid glue is arranged at the joint.

The upper end and the lower end of the inner surface of the magnetic shoe III 8 are respectively attached to the two annular supports 91; and a solid glue layer is arranged at the joint of the magnetic shoe III 8 and the annular bracket 91.

Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. Radial ring of magnetic shoe individual layer stator, its characterized in that: the magnetic shoe fixing device comprises magnetic shoes made of the same material and a fixing device for fixing the magnetic shoes, wherein the magnetic shoes are in even number pairs, and the magnetic shoes in the even number pairs surround to form a ring shape; the inner edges of the left and right ends of the magnetic shoe are provided with inner chamfers.

2. The single-layer stator radial ring of magnetic tiles of claim 1, wherein: the magnetic tile is a magnetic tile I (1), and the fixing device is a curing agent layer (2);

the inner side edges of the left end and the right end of each magnetic tile I (1) are provided with inner chamfers (11), and the contact positions of the left end and the right end of each adjacent magnetic tile I (1) are provided with curing agent layers (2).

3. The single-layer stator radial ring of magnetic tiles of claim 1, wherein: the magnetic shoe is a magnetic shoe I (1), and the fixing device comprises a wave-shaped spring (3) and a shell (4);

the inner side edges of the left end and the right end of the magnetic tile I (1) are provided with inner chamfers (11), a circular ring formed by enclosing the magnetic tiles I (1) is sleeved in an inner cavity of the shell (4), and the outer surface of each magnetic tile I (1) is attached to the inner surface of the shell (4);

a gap is arranged between the adjacent magnetic shoes I (1), and a wave-shaped spring (3) is arranged at the gap.

4. The single-layer stator radial ring of magnetic tiles of claim 1, wherein: the magnetic shoe is a magnetic shoe II (5), and the fixing device comprises an inner surface annular buckle (61) and an outer surface annular buckle (62);

inner chamfers (11) are arranged at the inner side edges of the left end and the right end of the magnetic shoe II (5), an inner groove (51) is arranged on the inner surface of the magnetic shoe II (5), and an outer groove (52) is arranged on the outer surface of the magnetic shoe II (5); an inner groove (51) on the encircling and synthesizing annular magnetic shoe II (5) is encircled to form an inner groove ring; an outer groove (52) on the encircling annular magnetic shoe II (5) is encircled to form an outer groove ring;

an inner surface annular buckle (61) matched with the inner groove ring is arranged in the inner groove ring; an outer surface annular buckle (62) matched with the outer groove ring is arranged in the outer groove ring; the inner surface annular buckle (61) and the outer surface annular buckle (62) are respectively provided with a buckle notch.

5. The single-layer stator radial ring of magnetic tiles of claim 1, wherein: the magnetic tile is a magnetic tile I (1), and inner chamfers (11) are arranged at the inner side edges of the left end and the right end of the magnetic tile I (1); the fixing device is a bracket component I, the bracket component I comprises 2 circular ring brackets (71) which are arranged in parallel from top to bottom, the axial leads of the 2 circular ring brackets (71) are coincided, and bracket notches (72) are formed in the circular ring brackets (71);

trapezoidal axial upright posts (73) are uniformly and vertically fixed in the inner cavity of the circular ring bracket (71) along the radial direction; the number of the trapezoidal axial upright columns (73) is equal to that of the magnetic shoes I (1); each trapezoidal axial upright post (73) is fixedly connected with 2 circular ring brackets (71); each two trapezoidal axial upright columns (73) and a local circular ring support (71) positioned between the two trapezoidal axial upright columns (73) enclose a clamping groove (74), and the outer surface of a magnetic shoe I (1) axially inserted into the clamping groove (74) is matched with the inner surface of the circular ring support (71); the left end surface and the right end surface of the magnetic shoe I (1) are respectively matched with the side surfaces of the adjacent trapezoidal axial upright columns (73).

6. The single-layer stator radial ring of magnetic tiles of claim 5, wherein:

the short bottom edge end of the trapezoidal axial upright post (73) is fixedly connected with the circular ring support (71), and the long bottom edge end of the trapezoidal axial upright post (73) faces the axial lead of the circular ring support (71).

7. The single-layer stator radial ring of magnetic tiles of claim 1, wherein: the magnetic shoe is a magnetic shoe III (8), and the fixing device is a bracket assembly II;

the bracket assembly II comprises 2 annular brackets (91) which are arranged in parallel from top to bottom, the axial leads of the 2 annular brackets (91) are overlapped, and a triangular axial column (92) is arranged between the upper and lower adjacent annular brackets (91); the upper end and the lower end of the triangular prism-shaped axial column (92) are respectively fixedly connected with two adjacent annular supports (91) at the upper part and the lower part;

the bracket component II is positioned in a circular ring formed by enclosing the magnetic shoe III (8);

the left end and the right end of the magnetic shoe III (8) are respectively provided with an inner chamfer (81) and an outer chamfer (82), and the outer chamfer (82) is matched with one side surface of the triangular axial column (92); a solid glue layer is arranged at the joint of the outer chamfer (82) and the triangular prism-shaped axial column (92);

the upper end and the lower end of the inner surface of the magnetic shoe III (8) are respectively attached to the two annular supports (91); and a solid glue layer is arranged at the joint of the magnetic shoe III (8) and the annular bracket (91).