CN214958956U

CN214958956U - Rotor fixing structure based on diaphragm

Info

Publication number: CN214958956U
Application number: CN202121491842.3U
Authority: CN
Inventors: 严建新
Original assignee: Zhejiang PanGood Power Technology Co Ltd
Current assignee: Zhejiang PanGood Power Technology Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-11-30
Anticipated expiration: 2031-07-01

Abstract

The utility model provides a rotor fixed knot constructs based on diaphragm, including a rotor, the rotor includes a rotor dish, a plurality of magnet steel and a spacing ring, the rotor dish includes a base plate and a plurality of backup pad, the backup pad is extended outwards in the periphery of base plate, a plurality of magnet steel are fixed respectively and are extended outwards in the base plate, and with the backup pad interval sets up, the spacing ring by the cup joint in the magnet steel outer peripheral edge, so that the magnet steel is fixed in between the base plate and the spacing ring; at least one membrane, wherein the membrane is held on the rotor disc, the magnetic steel and the limit ring, and the surface of the membrane and/or the surface of the rotor disc are provided with a combining part, so that the combining performance between the membrane and the rotor disc is improved.

Description

Rotor fixing structure based on diaphragm

Technical Field

The utility model relates to a rotor technical field especially relates to a rotor fixed knot constructs based on diaphragm.

Background

Radial magnetic field motors and axial magnetic field motors (also called disc motors) are two major branches of the motor field, and disc motors are increasingly widely used due to the characteristics of small axial size, high efficiency and the like.

In the prior art, a rotor of a disc motor mainly comprises a rotor disc and magnetic steel, wherein the rotor disc is provided with a clamping groove for fixing the magnetic steel, and the magnetic steel is fixed in the clamping groove and is fixed by glue or a limiting ring and the like. And the rotor is in long-term and high-speed rotatory in-process, and its centrifugal force can produce very big stress to the spacing ring, has influenced the fixed effect of spacing ring to the magnet steel, and then has reduced the availability factor of rotor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a promote right the magnet steel is at radial, axial and axial fixed effect, and promote the diaphragm with the rotor fixed knot who combines the effect between the rotor constructs based on the diaphragm.

The utility model also provides a rotor fixed knot constructs based on diaphragm, include:

the rotor comprises a rotor disc, a plurality of magnetic steels and a limiting ring, the rotor disc comprises a substrate and a plurality of supporting plates, the supporting plates extend outwards to the periphery of the substrate, the magnetic steels are fixed and extend outwards to the substrate respectively and are arranged at intervals with the supporting plates, and the limiting ring is sleeved on the outer periphery of the magnetic steels so that the magnetic steels are fixed between the substrate and the limiting ring;

at least one membrane, which is held on the rotor disc, the magnetic steel and the limit ring, and the membrane and/or the surface of the rotor disc are provided with a joint part.

Preferably, the bonding portion of the membrane is in a mesh shape, and the bonding portion of the rotor disk is in a linear shape.

Preferably, the diaphragm has an inner edge and an outer edge opposite to the inner edge, the inner edge of the diaphragm is disposed on the substrate, and the outer edge of the diaphragm is disposed on the retainer ring, so that the magnetic steel is covered by the diaphragm.

As a preferred technical scheme, the outer edge of the diaphragm is positioned between the inner end face and the outer end face of the limiting ring.

Preferably, the number of the diaphragms is at least two, and the two diaphragms are held on both sides in the axial direction of the rotor.

As a preferred technical solution, two layers of the diaphragm are arranged on each side of the rotor in the axial direction.

As a preferred technical scheme, the magnetic steel is provided with two clamping grooves which are kept at two sides of the circumferential direction of the magnetic steel; the supporting plate is provided with two clamping strips, and the two clamping strips are kept at two sides of the circumferential direction of the substrate, so that the magnetic steel is inserted into the two adjacent supporting plates and then limited in the clamping grooves.

As a preferred solution, the rotor disc comprises a plurality of layers of base material, which are laminated and hot pressed to form the rotor disc.

As the preferred technical scheme, the diaphragm is fixed on the magnetic steel and the limiting ring by hot melting.

As a preferable technical scheme, the diaphragm is made of a polypropylene film material.

Compared with the prior art, the technical scheme has the following advantages:

through rotor axial at least one side tectorial membrane to make the diaphragm be kept in magnet steel with on the spacing ring, let magnet steel with connection between the spacing ring is more firm, and is right the axial motion of magnet steel blocks, improves simultaneously the roughness on rotor surface prevents the spacing ring because of the high-speed rotation of rotor is inefficacy, and then avoids magnet steel rocks, breaks away from even, effectively prolongs the life and the work efficiency of rotor. The shape of the diaphragm is various, and the diaphragm can be connected to the magnetic steel, the limiting ring and the rotor disc, so that the magnetic steel is partially exposed or not exposed, and in a partially exposed structure, the magnetic steel dissipates heat through the exposed part of the magnetic steel. The outer edge of the diaphragm is located between the inner end face and the outer end face of the limiting ring, so that the outer edge of the diaphragm is prevented from exceeding the limiting ring to influence the adhesion of the diaphragm on the rotor. In addition, the rotor disc is formed by laminating multiple layers of base materials, and the membrane and/or the surface of the rotor disc are provided with a bonding part, so that the bonding performance of the membrane and the rotor disc is improved.

The present invention will be further described with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a diaphragm-based rotor fixing structure according to the present invention;

fig. 2 is a schematic structural view of a second embodiment of a diaphragm-based rotor fixing structure according to the present invention;

fig. 3 is a schematic structural view of a third embodiment of a diaphragm-based rotor fixing structure according to the present invention;

fig. 4 is a schematic structural view of a fourth embodiment of the diaphragm-based rotor fixing structure according to the present invention;

fig. 5 is a left side view of the diaphragm-based rotor securing structure of the present invention;

fig. 6 is a schematic structural view of the rotor of the present invention;

fig. 7 is a partial cross-sectional view of a rotor according to the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

As shown in fig. 1 to 7, the diaphragm-based rotor fixing structure includes:

a rotor 100, the rotor including a rotor disc 110, a plurality of magnets 120 and a retaining ring 130, the rotor disc 110 including a base plate 111 and a plurality of supporting plates 112, the supporting plates 112 extending outward around the base plate 111, the plurality of magnets 120 being fixed to extend outward around the base plate 111 and spaced apart from the supporting plates 112, the retaining ring 130 being sleeved around the outer peripheries of the magnets 120, so that the magnets 120 are fixed between the base plate 111 and the retaining ring 130;

at least one diaphragm 200, wherein the diaphragm 200 is held on the magnetic steel 120 and the limit ring 130.

The magnetic steel 120 is inserted between two adjacent support plates 112 and fixed between the substrate 111 and the limit ring 130, so that the radial direction of the magnetic steel 120 is limited and fixed by the substrate 111 and the limit ring 130, and the circumferential direction and the axial direction of the magnetic steel 120 are limited and fixed by the support plates 112. Additionally the utility model discloses an at least one side tectorial membrane of rotor 100 axial to make diaphragm 200 kept in magnet steel 120 with on the spacing ring 130, let magnet steel 120 with connection between the spacing ring 130 is more firm, and is right magnet steel 120's axial motion blocks, improves simultaneously the roughness on rotor 100 surface prevents spacing ring 130 because of rotor 100 is high-speed rotatory and is become invalid, and then avoids magnet steel 120 breaks away from, effectively prolongs rotor 100's life and work efficiency.

As shown in fig. 1, the base plate 111 is circular, the support plates 112 are elongated, and the support plates 112 are disposed at equal intervals along the circumference of the base plate 111, so that a space for accommodating the magnetic steel 120 is defined between two adjacent support plates 112, and the space is matched with the shape of the magnetic steel 120, and is both fan-shaped, so that the magnetic steel 120 is tightly fitted between two adjacent support plates 112, so as to fix the magnetic steel 120 by the rotor disc 110 in the circumferential direction and the axial direction.

Specifically, the support plate 112 is integrally connected to the base plate 111, and both the support plate and the base plate are identical in size in the axial direction of the base plate 111 and are small, so that the support plate is suitable for a disc motor with a small axial size.

As shown in fig. 7, the magnetic steel 120 has two clamping grooves 121, and the two clamping grooves 121 are held at two sides of the circumferential direction of the magnetic steel 120; the supporting plate 112 has two clamping strips 1121, the two clamping strips 1121 are held at two circumferential sides of the substrate 111, so that the magnetic steel 120 is inserted into two adjacent supporting plates 112, and then the clamping strips 1121 are limited in the clamping grooves 121 to fix the axial direction of the magnetic steel 120.

In detail, the locking groove 121 can extend along the radial direction of the magnetic steel 120 to the inner and outer peripheries of the magnetic steel 120, and the locking strip 1121 extends along the length direction of the supporting plate 112 to the inner and outer end surfaces of the supporting plate 112, wherein the inner end surface of the supporting plate 112 is integrally connected to the base plate 111, and the outer end surface of the supporting plate 112 is disposed outward. Thus, a user can insert the clip strip 1121 into the clip slot 121, and insert the magnetic steel 120 between two adjacent support plates 112 along the length direction of the support plates 112. The longitudinal direction of the support plate 112 and the radial direction of the magnetic steel 120 are respectively identical to the radial direction of the substrate 111.

As shown in fig. 6, the limiting ring 130 is annular and is sleeved on the outer periphery of the magnetic steel 120 so as to fix the magnetic steel 120 between the substrate 111 and the limiting ring 130, and further fix the magnetic steel 120 in the radial direction. The length of the supporting plate 112 may be the same as the radial length of the magnetic steel 120, so that the limiting ring 130 may be sleeved on the outer periphery of the magnetic steel 120 and the outer end surface of the supporting plate 112, thereby preventing a gap between the supporting plate 112 and the limiting ring 130 from affecting the fixing effect.

The rotor disc 110, the magnetic steel 120 and the limit ring 130 have the same size in the axial direction of the rotor disc 110, and are all small, so that the rotor disc is suitable for a disc motor with a small axial size.

The rotor disc 110, the magnetic steel 120 and the limit ring 130 may be further connected by glue, a fastener or a limit structure. Taking the fastening member as an example, the fastening member passes through the position-limiting ring 130 and is locked with the supporting plate 112, so that the position-limiting ring 130 can be connected to the supporting plate 112. Taking a limiting structure as an example, the limiting ring 130 and the supporting plate 112 both have a structure for limiting each other, so as to connect the limiting ring 130 and the supporting plate 112. Taking glue as an example, the rotor disc 110, the magnetic steel 120 and the limiting ring 130 may be assembled first, and then glue is injected at the joint, or glue may be applied to the parts and then the parts are assembled.

The diaphragm 200 can be fixed on the magnetic steel and the limit ring by hot melting, namely, the diaphragm 200 has viscosity, releases the viscosity after being heated, and is cooled and solidified on the magnetic steel and the limit ring by utilizing the viscosity. The membrane sheet 200 may be a polypropylene film (also referred to as PP film) or the like. The membrane 200 may of course be fixed with glue.

The diaphragm 200 is held on the magnetic steel 120 and the limit ring 130, and is connected to the magnetic steel 120 and the limit ring 130 to fix the magnetic steel 120 in the axial direction and improve the flatness of the surface of the rotor 100. Of course, the diaphragm can be held on the magnetic steel 120, the limiting ring 130 and the rotor disc 110 of the rotor 100 to further improve the connection effect of the magnetic steel 120, so as to prevent the magnetic steel 120 from shaking on the rotor disc 110 and even from being separated.

The shape of the diaphragm 200 may be varied, as long as the diaphragm 200 can fully or partially cover the connection position of the magnetic steel 120 and the rotor disc 110 and the retaining ring 130, respectively, which is described below by four embodiments:

first embodiment

As shown in fig. 1, the diaphragm 200 has an inner edge 210 and an outer edge 220 opposite to the inner edge 210, the inner edge 210 of the diaphragm 200 is disposed on the substrate 111, and the outer edge 220 of the diaphragm 200 is disposed on the retainer ring 130, so that the magnetic steel 120 is covered by the diaphragm 200.

The diaphragm 200 is annular, the inner edge 210 and the outer edge 220 of the diaphragm 200 are respectively located at two radial sides of the magnetic steel 120, the inner edge 210 of the diaphragm 200 is located on the substrate 111, and the outer edge 220 of the diaphragm 200 is located on the limit ring 130, so that the diaphragm 200 is respectively connected with the magnetic steel 120, the substrate 111 and the limit ring 130 correspondingly, and the connection effect of the magnetic steel 120 of the diaphragm 200 pair is improved.

As can be seen from the above, the radial dimension of the diaphragm 200 is larger than the radial dimension of the magnetic steel 120, and the diaphragm 200 can cover the entire magnetic steel 120 and also the entire support plate 112.

Preferably, the outer edge 220 of the diaphragm 200 is located between the inner end surface and the outer end surface of the retainer ring 130, so as to prevent the outer edge 220 of the diaphragm 200 from exceeding the retainer ring 130, which may affect the adhesion of the diaphragm 200 on the rotor 100, for example, the outer edge 220 of the diaphragm 200 may be tilted over time, and thus the diaphragm 200 may fall off. The inner end surface of the limiting ring 130 abuts against the outer periphery of the magnetic steel 120, and the outer end surface of the limiting ring 130 is arranged outwards.

Further, the diameter of the outer end surface of the retainer ring 130 is larger than the diameter of the outer edge 220 of the diaphragm 200, so that the outer edge 220 of the diaphragm 200 is located between the inner end surface and the outer end surface of the retainer ring 130.

The distance between the inner edge 210 of the retainer ring 130 and the inner periphery of the magnetic steel 120 is less than or equal to 2 times, preferably 1.5 times, the distance between the outer edge 220 of the retainer ring 130 and the outer periphery of the magnetic steel 120.

In addition, the distance between the inner and outer end faces of the retainer ring 130 (i.e., the radial dimension of the retainer ring 130) is less than or equal to 2 times, preferably 1.5 times, the distance between the outer edge 220 of the retainer ring 130 and the outer periphery of the magnetic steel 120.

Second embodiment

As shown in fig. 2, the difference between the first embodiment and the second embodiment is that the inner edge 210 of the diaphragm 200 is disposed on the support plate 112 and the magnetic steel 120.

The outer edge 220 of the diaphragm 200 is located between the inner end surface and the outer end surface of the limit ring 130, and the ratio of the radial dimension of the diaphragm 200 to the radial dimension of the magnetic steel 120 is not more than 1/2. At this time, one side of the magnetic steel 120 close to the limit ring 130 is covered, and one side of the magnetic steel 120 close to the substrate 111 is exposed, so that the magnetic steel 120 can dissipate heat while the connection effect of the magnetic steel 120 is ensured. It can be seen that the diaphragm 200 partially covers the magnetic steel 120, so that the magnetic steel exposed outside the diaphragm 200 can dissipate heat.

Further, the ratio of the distance between the inner edge 210 of the diaphragm 200 and the outer periphery of the magnetic steel 120 to the radial dimension of the magnetic steel 120 is greater than or equal to 1/2.

Third embodiment

As shown in fig. 3, the diaphragm 200 is adapted to the shape of the outer contour of the magnetic steel 120, and the connection positions between the magnetic steel 120 and the substrate 111, the support plate 112, and the position-limiting ring 130 are all covered by the diaphragm 200.

The middle of the diaphragm 200 is hollow, so that the middle position of the magnetic steel 120 is exposed to dissipate heat, and only the connection positions between the magnetic steel 120 and the substrate 111, the support plate 112 and the limit ring 130 are covered by the diaphragm 200.

The number of the membranes 200 is consistent with that of the magnetic steels 120, the membranes 200 are placed at corresponding positions of the magnetic steels 120 one by one, and one-time hot press forming is carried out by using manufacturing equipment.

In addition, the diaphragm 200 does not extend beyond the stop collar 130 to prevent failure of the diaphragm 200.

Fourth embodiment

As shown in fig. 4, the diaphragm 200 has a plurality of heat dissipation holes 230, the heat dissipation holes 230 are held with respect to the magnetic steel 120, and the cross section of the heat dissipation holes 230 is smaller than the cross section of the magnetic steel 120, unlike the first embodiment. Thus, the connection effect of the magnetic steel 120 is ensured, and the magnetic steel 120 can also dissipate heat.

The number of the heat dissipation holes 230 may be the same as that of the magnetic steel 120, and the heat dissipation holes 230 may also be fan-shaped, but may also be in other shapes, such as square, circular, or triangular.

In summary, the shape of the diaphragm 200 is various, and the diaphragm can be connected to the magnetic steel 120, the limiting ring 130 and the rotor disc 110, so that the magnetic steel 120 is partially exposed or not exposed, and in the partially exposed structure, the magnetic steel 120 dissipates heat through the exposed part thereof. In addition, the outer edge 220 of the diaphragm 200 is located between the inner end surface and the outer end surface of the retainer ring 130, so that the outer edge 220 of the diaphragm 200 is prevented from exceeding the retainer ring 130 to affect the adhesion of the diaphragm 200 on the rotor 100.

As shown in fig. 5, the number of the diaphragms 200 is at least two, and two diaphragms 200 are held on both sides in the axial direction of the rotor 100. Through rotor 100 axial both sides set up respectively diaphragm 200 effectively promotes to magnet steel 120 axial fixed effect.

More preferably, two layers of the diaphragm 200 are disposed on each side of the rotor 100 in the axial direction.

It should be noted that the shapes of the diaphragms 200 at two axial sides of the rotor 100 are different, for example, one axial side of the rotor 100 adopts the diaphragm 200 in the first embodiment, and the other axial side adopts any one of the diaphragms 200 in the second to fourth embodiments, so that one side of the magnetic steel 120 is covered by the diaphragm 200, and the other side is partially exposed by the diaphragm 200, which not only improves the connection effect of the diaphragm 200 to the magnetic steel, but also improves the heat dissipation performance.

The membrane 200 and/or the rotor disc 110 have a combination part, and the combination part is slightly protruded out of the surfaces of the membrane 200 and the rotor disc 110 to increase friction between the two, so as to prevent the two from being misaligned, thereby affecting subsequent hot-pressing operation and improving the combination performance of the two.

In one embodiment, the bonding portion of the membrane 200 is in a grid shape, and the bonding portion of the rotor disc 110 is in a linear shape, and a plurality of linear lines are spaced apart.

In another embodiment, the joints on the membrane 200 are linear and the joints on the rotor disc 110 are in a grid shape.

The rotor disk 110 includes a plurality of layers of base materials that are laminated and hot pressed to form the rotor disk. The base material can be made of composite materials and is fixed by hot melting under hot pressing. The rotor disc 110 is a solid structure, and is not a hollow structure, which not only improves the structural strength of the rotor disc 110, but also enables the membrane 200 and the rotor disc 110 to be effectively bonded under hot pressing, thereby improving the bonding effect of the two.

In summary, at least one axial side of the rotor 100 is coated with a film, and the film 200 is held on the magnetic steel 120 and the limit ring 130, so that the connection between the magnetic steel 120 and the limit ring 130 is more stable, the axial movement of the magnetic steel 120 is blocked, the flatness of the surface of the rotor 100 is improved, the limit ring 130 is prevented from being out of service due to the high-speed rotation of the rotor 100, the magnetic steel 120 is prevented from shaking or even breaking away, and the service life and the working efficiency of the rotor 100 are effectively prolonged. The shape of the diaphragm 200 is various, and the diaphragm can be connected to the magnetic steel 120, the limiting ring 130 and the rotor disc 110, so that the magnetic steel 120 is partially exposed or not exposed, and in the partially exposed structure, the magnetic steel 120 dissipates heat through the exposed part thereof. The outer edge 220 of the diaphragm 200 is located between the inner end surface and the outer end surface of the retainer ring 130, so that the outer edge 220 of the diaphragm 200 is prevented from exceeding the retainer ring 130 to affect the adhesion of the diaphragm 200 on the rotor 100. In addition, the rotor disc 110 is formed by laminating multiple layers of base materials, and the membrane 200 and/or the surface of the rotor disc 110 are provided with a bonding part, so that the bonding effect of the membrane 200 and the rotor disc 110 is improved.

The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to limit the scope of the present invention in terms of implementation, which is not limited by the present embodiment, i.e. all equivalent changes or modifications made in accordance with the spirit disclosed by the present invention still fall within the scope of the present invention.

Claims

1. A diaphragm-based rotor securing structure, comprising:

a rotor (100), the rotor (100) includes a rotor disc (110), a plurality of magnetic steels (120) and a spacing ring (130), the rotor disc (110) includes a base plate (111) and a plurality of supporting plates (112), the supporting plates (112) are extended outwards from the periphery of the base plate (111), the plurality of magnetic steels (120) are fixed to be extended outwards from the base plate (111) and spaced from the supporting plates (112), the spacing ring (130) is sleeved on the outer periphery of the magnetic steels (120), so that the magnetic steels (120) are fixed between the base plate (111) and the spacing ring (112);

at least one membrane (200), wherein the membrane (200) is held on the rotor disc (110), the magnetic steel (120) and the limiting ring (130), and the surface of the membrane (200) and/or the rotor disc (110) is provided with a bonding part.

2. A diaphragm-based rotor securing structure according to claim 1, wherein the joints on the diaphragm (200) are in a grid shape and the joints on the rotor disc (110) are in a linear shape.

3. A diaphragm-based rotor securing structure according to claim 1, wherein the diaphragm (200) has an inner edge (210) and an outer edge (220) opposite to the inner edge (210), the inner edge (210) of the diaphragm (200) being disposed on the base plate (111), the outer edge (220) of the diaphragm (200) being disposed on the retainer ring (130) such that the magnetic steel (120) is covered by the diaphragm (200).

4. A diaphragm-based rotor securing structure according to claim 3, wherein the outer edge (220) of the diaphragm (200) is located between the inner and outer end faces of the stop collar (130).

5. A diaphragm-based rotor securing structure according to claim 1, wherein the number of said diaphragms (200) is at least two, and two of said diaphragms (200) are held on both sides in the axial direction of said rotor (100).

6. A diaphragm-based rotor securing structure according to claim 1, wherein two layers of said diaphragm (200) are provided on each side of said rotor (100) in the axial direction.

7. The diaphragm-based rotor fixing structure according to claim 1, wherein the magnetic steel (120) has two catching grooves (121), and the two catching grooves (121) are held on both sides of the magnetic steel (120) in the circumferential direction; the supporting plate (112) is provided with two clamping strips (1121), the two clamping strips (1121) are kept at two sides of the circumferential direction of the substrate (111), so that the magnetic steel (120) is inserted into the two adjacent supporting plates (112), and then the clamping strips (1121) are limited in the clamping grooves (121).

8. The membrane based rotor securing structure according to claim 1, wherein said rotor disc (110) comprises a plurality of layers of base material, which are laminated and hot pressed to form said rotor disc.

9. The diaphragm-based rotor securing structure according to claim 1, wherein the diaphragm (200) is secured to the magnetic steel (120) and the retainer ring (130) by heat fusion.

10. The diaphragm-based rotor-fixing structure as claimed in claim 1, wherein the diaphragm (200) is made of a polypropylene film material.