WO2022041583A1

WO2022041583A1 - Rotor structure of disc motor

Info

Publication number: WO2022041583A1
Application number: PCT/CN2020/136671
Authority: WO
Inventors: 汤磊; 张广权; 夏莉; 杨文雄; 李一雄; 陈进华
Original assignee: 上海盘毂动力科技股份有限公司
Priority date: 2020-08-24
Filing date: 2020-12-16
Publication date: 2022-03-03

Abstract

A rotor structure of a disc motor comprising a rotor disc (100), multiple magnet steels (200), and a hoop (300). The rotor disc (100) comprises a base portion (110) and multiple support portions (120). The support portion (120) extends outwardly toward the circumference of the base portion (110). The number of magnet steels (200) is consistent with the number of support portions (120). The multiple magnet steels (200) are fixed to separately extend outwardly toward the base portion (110), and are spaced apart from the support portions (120). The hoop (300) is fixedly sleeved on an outer circumference of the magnet steel (200), such that the magnet steel (200) is fixed between the hoop (300) and the base portion (110). Axial positioning of the hoop (300) is performed between the hoop (300) and the rotor disc (100) by means of a fixing mechanism (400). The fixing mechanism (400) comprises a first fixing structure (410a, 410b, 410c, 410d) provided on the rotor disc (100) and configured to not be higher than two side surfaces of the rotor disc (100). The fixing mechanism (400) comprises a second fixing structure (420a, 420b, 420c, 420d) provided on the hoop (300) and configured to not affect circumferential continuity of fibers in the hoop (300). The first fixing structure (410a, 410b, 410c, 410d) and the second fixing structure (420a, 420b, 420c, 420d) cooperate with each other to perform axial positioning of the hoop (300), such that the hoop (300) is tightly fastened, thereby enabling the hoop (300) to better fix the magnet steel (200).

Description

Rotor structure of disc motor

technical field

The present invention relates to the technical field of disc motor rotors, in particular to a rotor structure of a disc motor.

Background technique

Due to the characteristics of small size, high power density, short axial size, and low life cycle cost, disc motors can be used in most thin installation occasions. Magnetic steel fixing plays a vital role in the smooth operation and reliability of the motor. . Most of the traditional disc motor rotors adopt surface mount structure. The magnetic steel of this structure is pasted on the surface of the rotor. Due to the centrifugal force, the surface mount structure cannot make the motor run at a high speed, which limits the maximum speed of the motor and reduces the speed of the motor. performance. In addition, the method of adhering the magnetic steel to the surface of the rotor has certain potential safety hazards. The glue is prone to deterioration and aging due to the relationship of time, resulting in a significant decrease in the bonding strength, and then the phenomenon of the magnetic steel falling off.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a rotor junction of a disc motor which is convenient and quick to assemble and enhances the fixing effect of the magnetic steel.

A rotor structure of a disc motor includes a rotor disc, a plurality of magnetic steels and a hoop, the rotor disc includes a base portion and a plurality of support portions, the support portions extend outward from the periphery of the base portion, and there are many The number of each of the magnetic steels is the same as that of the plurality of the support portions, and the plurality of the magnetic steels are respectively fixed to extend outward from the base portion and are arranged at intervals from the support portions; the hoop is fixedly sleeved on the outer periphery of the magnetic steel, so that the magnetic steel is fixed between the hoop and the base; the axial positioning of the hoop is performed between the hoop and the rotor disk through a fixing mechanism, so The fixing mechanism includes a first fixing structure arranged on the rotor disk and not higher than the two sides of the rotor disk, and the fixing mechanism includes a first fixing structure arranged on the hoop and does not affect the circumferential continuity of fibers in the hoop The second fixing structure is a flexible second fixing structure, and the first fixing structure and the second fixing structure cooperate with each other to axially position the hoop.

Optionally, the first fixing structure includes a first blocking member and a second blocking member, the first blocking member and the second blocking member are respectively located on both sides of the rotor disk in the axial direction, and the second fixing structure It is the side surfaces of the hoop which are respectively matched with the first blocking member and the second blocking member, so that the hoop is fixedly clamped between the first blocking member and the second blocking member.

Optionally, the first stopper is integrally formed with the support portion, and the second stopper is detachably connected to the support portion.

Optionally, the second stopper includes a connecting portion and an abutting portion, the connecting portion and the abutting portion are connected, and the connecting portion is sleeved on the support portion and fixed by a fastener , so that the abutting portion abuts on the side of the hoop away from the first blocking member.

Optionally, both the first stopper and the second stopper are detachably connected to the support portion.

Optionally, the support portion is provided with a first slot, so that the first stopper is installed on the first slot and fixed by a fastener;

The support portion is provided with a second clamping groove, so that the second blocking member is installed on the second clamping groove and fixed by a fastener.

Optionally, both the first stopper and the second stopper are integrally formed with the support portion.

Optionally, the hoop includes at least one fiber strip, the fiber strip is wound around the outer periphery of the magnetic steel, and the fiber strip is located on the first stopper and the second stopper between.

Optionally, the number of the first stopper and the second stopper are the same, and are arranged in a one-to-one correspondence.

Optionally, the first stopper and the second stopper are staggered.

Optionally, a plurality of first stoppers are arranged at equal intervals along the outer periphery of the base;

A plurality of second stoppers are arranged at equal intervals along the outer periphery of the base.

Optionally, the second fixing structure includes a clamping groove formed on the inner wall of the hoop for clamping the first fixing structure, and the first fixing structure is fixed with the support portion so that the The hoop is sleeved on the outer periphery of the magnetic steel.

Optionally, one end of the support portion facing away from the base portion is provided with an insert groove for fixing the first fixing structure.

Optionally, the grommet is located on the end of the support portion facing away from the base, and the grommet extends to one side of the thickness of the support portion, so that the first fixing structure slides from this side into the groove.

Optionally, the insert groove is filled with adhesive, so that the first fixing structure and the hoop are respectively bonded to the support portion.

Optionally, at least one accommodating groove for accommodating the adhesive is opened in the embedding groove.

Optionally, the first fixing structure includes a clamping part and a fixing part, the clamping part is connected with the fixing part, the fixing part is embedded on the hoop, and the clamping part is The part is engaged in the inserting groove.

Optionally, the number of the card slot is one, and the card slot is annular.

Optionally, the supporting portions with the inserting grooves are arranged at equal intervals along the periphery of the base portion.

Optionally, a side portion of the magnetic steel facing the support portion is provided with the first limiting portion, and the supporting portion is provided with a second limiting portion matched with the first limiting portion.

Optionally, the hoop is made of metal or fiber material.

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

The two ends of the magnetic steel in the radial direction are fixed by the base and the hoop, and the two sides of the magnetic steel in the circumferential direction are fixed by the support part, and the support part is provided with the second limit The magnetic steel is provided with the first limiting portion, and the first limiting portion cooperates with the second limiting portion to axially fix the magnetic steel. By adopting the above structure , so that the magnetic steel is fastened on the rotor disk, and the displacement of the magnetic steel due to high-speed rotation is effectively prevented. The two sides of the hoop are clamped by the first blocking member and the second blocking member, so that the hoop is fastened, and the fixing effect of the hoop on the magnetic steel is enhanced. In addition, the first stopper and the second stopper can be connected to the support part in a detachable connection or an integrated manner, and will not damage the shape of the magnetic steel and the hoop, and further Improve the fixation effect of the magnet.

In addition, the hoop is clamped with the insert groove on the support part through the first fixing structure, and the adhesive can be injected into the insert groove, and the adhesive can be filled in the receiving part. In the groove, the connection strength of the two is effectively improved, and the phenomenon of adhesive detachment is effectively prevented.

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

FIG. 1 shows a schematic structural diagram of the first embodiment of the rotor structure of the disc motor according to the present invention;

FIG. 2 shows an exploded view of the rotor structure of the disc motor in FIG. 1;

Fig. 3 shows a partial exploded view of the rotor structure of the disc motor described in Fig. 1;

Fig. 4 shows the structural schematic diagram of the rotor disk in Fig. 1;

FIG. 5 shows a schematic structural diagram of the cooperation between the first stopper and the hoop in FIG. 1;

FIG. 6 shows a schematic structural diagram of the cooperation between the second stopper and the hoop in FIG. 1;

FIG. 7 shows a schematic structural diagram of the second stopper in FIG. 6;

FIG. 8 shows a schematic structural diagram of a second embodiment of the rotor structure of the disc motor according to the present invention;

FIG. 9 shows an exploded view of the rotor structure of the disc motor described in FIG. 8;

Figure 10 shows a schematic structural diagram of the rotor disk in Figure 8;

FIG. 11 shows a schematic structural diagram of the first stopper and the second stopper in FIG. 8;

Fig. 12 shows the schematic diagram of the hoop structure in Fig. 8;

FIG. 13 shows a schematic structural diagram of the third embodiment of the rotor structure of the disc motor according to the present invention;

FIG. 14 shows a front view of the rotor structure of the disc motor described in FIG. 13;

Fig. 15 shows an exploded view of the rotor structure of the disc motor described in Fig. 13;

Figure 16 shows a schematic structural diagram of the rotor disk in Figure 13;

Fig. 17 shows a schematic structural diagram of the first stopper and the second stopper in Fig. 13;

Fig. 18 shows a schematic structural diagram of a preferred embodiment of the fixing structure of the magnetic steel in the rotor of the disc motor according to the present invention;

Fig. 19 shows a schematic structural diagram of the fourth embodiment of the rotor structure of the disc motor in Fig. 18;

Figure 20 shows a partial exploded view of the rotor structure of the disc motor described in Figure 18;

Fig. 21 shows a schematic structural diagram of the first fixing structure in Fig. 18;

FIG. 22 shows a schematic diagram of the structure of the embedding groove in FIG. 18 .

detailed description

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

It should be understood by those skilled in the art that in the disclosure of the present invention, the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and to simplify the description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus the above terms should not be construed as limiting the invention.

It should be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be one. The number may be plural, and the term "one" should not be understood as a limitation on the number.

As shown in FIGS. 1 to 23 , the rotor structure of the disc motor includes a rotor disc 100 , a plurality of magnetic steels 200 and a hoop 300 , and the rotor disc 100 includes a base portion 110 and a plurality of support portions 120 , The supporting portion 120 extends outwardly from the periphery of the base portion 110 , the number of the plurality of magnetic steels 200 is the same as the number of the plurality of the supporting portions 120 , and the plurality of the magnetic steels 200 are respectively fixed to extend outwardly from the supporting portion 120 . The base portion 110 is spaced from the support portion 120; the hoop 300 is fixedly sleeved on the outer periphery of the magnetic steel 200, so that the magnetic steel 200 is fixed to the hoop 300 and the base portion 110; between the hoop 300 and the rotor disk 100, the axial positioning of the hoop 300 is performed by a fixing mechanism 400, and the fixing mechanism 400 includes a setting on the rotor disk 100 and not higher than the The

first fixing structures

410a , 410b , 410c , and 410d on the two sides of the rotor disk 100 . The fixing mechanism 400 includes a second fixing structure that is arranged on the hoop 300 and does not affect the circumferential continuity of the fibers in the hoop 300 420a, 420b, 420c, 420d, the

first fixing structures

410a, 410b, 410c, 410d and the

second fixing structures

420a, 420b, 420c, 420d cooperate with each other to axially position the hoop 300.

The circumferential direction of the magnetic steel 200 is fixed by the support parts 120 on both sides of the magnetic steel 200 , and the radial direction of the magnetic steel 200 is fixed by the base part 110 and the hoop 300 , effectively preventing the hoop 300 Circumferential or radial displacement occurs. The hoop 300 cooperates with the

second fixing structures

420a, 420b, 420c, 420d through the

first fixing structures

410a, 410b, 410c, 410d to perform axial positioning, and then lifts the hoop 300 to the desired position. The fixing effect of the magnetic steel 200 can be improved, and the connection failure can be effectively prevented.

As shown in FIGS. 2 to 4 , 9 to 11 , 15 and 16 , and 19 and 20 , the magnetic steel 200 and the support portion 120 are arranged at intervals, so that a plurality of the magnetic steel 200 arranged in a circle. Specifically, the base portion 110 is circular, a plurality of the support portions 120 are arranged at equal intervals along the outer periphery of the base portion 110 , and the magnetic steel is installed between two adjacent support portions 120 . 200. In this way, the support portions 120 on both sides of the magnetic steel 200 in the circumferential direction can fix the magnetic steel 200 in the circumferential direction.

Further, the magnetic steel 200 is fan-shaped, and the first limiting portions 210 are respectively provided on both sides of the magnetic steel in the circumferential direction, and the support portion 120 is respectively provided with the first limiting portion 210 on both sides in the circumferential direction thereof. The second limiting portion 121 matched with a limiting portion 210, through the cooperation of the two, the magnetic steel 200 can be fastened between the two supporting portions 120, and the magnetic steel 200 can be arranged in the circumferential direction. And the axial direction is fixed, which further improves the fixing effect and prevents the magnetic steel 200 from being detached under high-speed rotation.

The first limiting portion 210 may be in a concave shape, and the second limiting portion 121 may be in a convex shape, and the shapes of the two are compatible, and both are circular or square. The concave first limiting portion 210 can extend on the magnetic steel 200 , so that the second limiting portion 121 is inserted into the first limiting portion 210 , and the magnetic steel 200 is inserted into the first limiting portion 210 . The first limiting portion 210 is matched with the second limiting portion 121 , so that the first limiting portion 210 can be inserted between the two supporting portions 120 and abut against the substrate 110 . Of course, the first limiting portion 210 may be convex, the second limiting portion 121 may be concave, and the concave second limiting portion 121 may extend on the supporting portion 120, so that the The first limiting portion 210 is inserted into the second limiting portion 121 , so that the magnetic steel 200 is inserted between the two supporting portions 120 .

As shown in FIGS. 1 to 3 , 8 , 9 , 13 to 15 , and 18 to 20 , the rotor structure of the disc motor further includes a rotating shaft 500 , and the rotating shaft 500 is mounted on the base. 110 and can be fixed by screws or bolts.

As shown in FIGS. 1 to 4 , 8 to 10 , 13 to 16 and 19 , the axial dimension of the rotor disk 100 is short, which means that the thickness of the rotor disk 100 is relatively thin, and the base The thicknesses of the 110 and the support portion 120 can be the same, and the two can be integrally formed.

Since the

first fixing structures

410a, 410b, 410c, and 410d and the

second fixing structures

420a, 420b, 420c, and 420d have various structures, so that the magnetic steel 200 can be fixed in various ways, four implementations will be used below. Example to introduce in detail:

first embodiment

As shown in FIG. 1 to FIG. 7 , the fixing mechanism 400 includes a first fixing structure 410 a disposed on the rotor disk 100 and not higher than two sides of the rotor disk 100 , and the fixing mechanism 400 includes a first fixing structure 410 a disposed on the rotor disk 100 . The second fixing structure 420a on the hoop 300 and not affecting the circumferential continuity of the fibers in the hoop 300, the first fixing structure 410a and the second fixing structure 420a cooperate with each other to pivot the hoop 300. Orientation.

The first fixing structure 410a includes a first stopper 411a and a second stopper 412a. The first stopper 411a and the second stopper 412a are located on both sides of the rotor disk 100 in the axial direction, The hoop 300 is fixedly clamped between the first blocking member 411a and the second blocking member 412a. The second fixing structure 420a is the side surface of the hoop 300 which is respectively matched with the first blocking member 411a and the second blocking member 412a.

The first stopper 411a is integrally formed with the support portion 120 , and the second stopper 412a is detachably connected to the support portion 120 .

Specifically, referring to FIG. 7 , the second blocking member 412a includes a connecting portion 4121a and an abutting portion 4122a, the connecting portion 4121a is connected with the abutting portion 4122a, and the connecting portion 4121a is mounted on the support On the part 120, the abutting part 4122a abuts on the side of the hoop 300 away from the first blocking member 411a.

The connecting portion 4121a can be sleeved on the supporting portion 120, so that the two are assembled more conveniently and quickly. Referring to FIG. 3 and FIG. 4, a side of the supporting portion 120 away from the first stopper 411a is provided with a The first sleeve hole 122, when the connecting portion 4121a is sleeved in the first sleeve hole 122, the abutting portion 4122a abuts on the side of the hoop 300 away from the first blocking member 411a , so that the abutting portion 4122a and the first blocking member 411a are respectively clamped on both sides of the hoop 300 .

The shape of the connecting portion 4121a is adapted to the shape of the first set of holes 122. In an example, the connecting portion 4121a and the first set of holes 122 are both cylindrical, and of course other shapes are also possible. , such as spheres, etc.

More specifically, the connecting portion 4121a and the supporting portion 120 are reinforced and fixed by fasteners 600, which can be screws or bolts, so that the second blocking member 412a is tied to the supporting portion 120 , the connection strength of the second blocking member 412 a on the support portion 120 is improved, thereby enhancing the fixing effect of the hoop 300 .

Referring to FIG. 5 , a side of the support portion 120 away from the second blocking member 412 a is provided with a second set of holes 123 for passing the fastener 700 , and the second set of holes 123 is connected to the first set of holes 123 . The sleeve holes 122 communicate with each other, so that the fastener 600 can pass through the second sleeve holes 123 and be threadedly connected with the connecting parts 4121 a located in the first sleeve holes 122 .

Continuing to refer to FIG. 5 , the fastener 600 is embedded in the side of the support portion 120 away from the second blocking member 412 a , that is, embedded in the second sleeve hole 123 to prevent it from affecting the rotor rotation.

As shown in FIG. 1 , FIG. 5 and FIG. 6 , the length of the first stopper 411 a in the extension direction of the support portion 120 is smaller than the length of the hoop 300 in the extension direction of the support portion 120 , as long as the first stopper 411 a is in the extension direction of the support portion 120 . It is sufficient that a stopper 411a is in contact with the hoop 300 . Similarly, the length of the abutting portion 520 a of the second blocking member 412 a in the extending direction of the supporting portion 120 is smaller than the length of the hoop 300 in the extending direction of the supporting portion 120 .

It should be noted that, the number of the first blocking member 411 a and the second blocking member 412 a are the same, and are disposed on the same support portion 120 in a one-to-one correspondence. Of course, the first blocking member 411a and the second blocking member 412a may be disposed on different supporting portions 120 , that is, staggered. For example, in two adjacent supporting portions 120 , one of the supporting portions 120 is provided with a first blocking member 411 a , and the other supporting portion 120 is provided with a second blocking member 412 a .

Preferably, a plurality of first blocking members 411 a and second blocking members 412 a are arranged at equal intervals along the outer periphery of the base portion 110 . The connection points between the hoop 300 and the rotor disk 100 are made symmetrical, the connection strength of the two is improved, and the fixing effect of the hoop 300 on the magnetic steel 200 is enhanced.

The hoop 300 can be made of high-strength metal or fiber material, wherein the hoop 300 made of metal can be formed by metal stamping. The fibrous hoop 300 can be formed by filament winding, and in this embodiment, processing such as cutting the fibers is not required to fix the hoop 300, which effectively avoids the phenomenon of strength reduction. The fibers can be glass fibers or carbon fibers.

When assembling, first use the first limiting portion 210 to cooperate with the second limiting portion 121, insert the magnetic steel 200 between the two adjacent supporting portions 120 one by one, and make the magnetic steel 200 abuts on the base 110 . Then, the hoop 300 is sleeved on the outer periphery of the magnetic steel 200, and the hoop 300 is abutted on the first stopper 411a. Then, the second stopper 412a is installed on the side of the hoop 300 away from the first stopper 411a, so that the hoop 300 is clamped to the first stopper 411a and the second stopper 412a.

In summary, the hoop 300 is fixed on both sides by the first blocking member 400a and the second blocking member 500a, and the second blocking member 500a is sleeved on the support portion 120, and Fastened by the fastener 500, the assembly is convenient and quick, and the first stopper 400a is integrally formed on the support portion 120, so there is no need to perform any operations on the magnetic steel 200, the hoop 300, etc. The shape is destroyed, thereby improving the fixing effect of the hoop 300 on the magnetic steel 200 .

Second Embodiment

As shown in FIG. 8 to FIG. 12 , the difference from the first embodiment lies in that both the first blocking member 411 b and the second blocking member 412 b are integrally formed with the supporting portion 120 . The second fixing structure 420b is the side surface of the hoop 300 which is respectively matched with the first blocking member 411b and the second blocking member 412b.

As shown in FIGS. 10 and 11 , the numbers of the first blocking members 411 b and the second blocking members 412 b are the same, and are provided on the same support portion 120 in a one-to-one correspondence. Of course, the first blocking member 411b and the second blocking member 412b may be disposed on different supporting portions 120 . For example, in two adjacent supporting portions 120 , one of the supporting portions 120 is provided with a first blocking member 411 b , and the other supporting portion 120 is provided with a second blocking member 412 b .

Preferably, a plurality of first blocking members 411 b and second blocking members 412 b are arranged at equal intervals along the outer periphery of the base portion 110 .

The hoop 300 can be made of fiber material, and the fiber includes glass fiber or carbon fiber, and is fixed to the outer periphery of the magnetic steel 200 by winding. Specifically, the hoop 300 includes at least one fiber strip 310, the fiber strip 310 is wound around the outer periphery of the magnetic steel 200, and the fiber strip 310 is located between the first stopper 411b and the between the second stopper 412b.

Further, the width of the fiber strip 310 is equal to the distance between the first blocking member 411b and the second blocking member 412b.

When assembling, first use the first limiting portion 210 to cooperate with the second limiting portion 121, insert the magnetic steel 200 between the two adjacent supporting portions 120 one by one, and make the magnetic steel 200 abuts on the base 110 . Then, the fiber strip 310 is wound around the outer periphery of the magnetic steel 200, and the fiber strip 310 is clamped between the first blocking member 411b and the second blocking member 412b.

To sum up, the hoop 300 is fixed on the outer periphery of the magnetic steel 200 by winding, and the assembly is convenient and quick to connect. The stopper 412b is clamped, and both the first stopper 411b and the second stopper 412b are integrally formed with the support portion 120 to prevent the hoop 300 from being displaced and affecting its effect on the magnetic steel 200 . Fixed effect.

Third Embodiment

As shown in FIGS. 13 to 17 , the difference from the first embodiment is that both the first blocking member 411 c and the second blocking member 412 c are detachably connected to the supporting portion 120 .

The first stopper 411c can be fixed on the support portion 120 by a fastener, and the head of the fastener is embedded in a side of the support portion 120 away from the first stopper 411c. Referring to FIG. 16 , the support portion 120 is provided with an installation hole 125 through which the fastener passes, and the fastener passes through the installation hole 125 and is threadedly connected to the first blocking member 411c. The second stopper 412c can also be fixed on the support portion 120 by a fastener, and the head of the fastener for fixing the second stopper 412c is embedded in the support portion 120 away from the first stopper. One side of the second stopper 412c.

As shown in FIGS. 16 and 17 , the support portion 120 is provided with a second slot 126 , and the second stopper 412c is installed in the second slot 126 and is reinforced and fixed by the fastener . The installation hole 125 is defined in the second slot 126 . The installation position of the second blocking member 412c is determined by arranging the second locking groove 126, the assembly efficiency is improved, and the connection strength of the two is enhanced.

Similarly, the support portion 120 is provided with a first slot for installing the first blocking member 411c, and the first slot is provided with the installation hole, so that the fasteners passing through the installation hole can pass through the mounting hole. The first stopper 411c is reinforced and fixed.

As shown in FIG. 17 , the second blocking member 412c includes a connecting portion 4121c and an abutting portion 4122c, the connecting portion 4121c and the abutting portion 4122c are connected, wherein the connecting portion 4121c is detachably installed On the first support portion 120 , the abutting portion 4122 c abuts against the hoop 300 . The width of the abutting portion 4122c is wider than the width of the connecting portion 4121c, which increases the contact area between the second blocking member 412c and the hoop 300, and enhances the resistance of the second blocking member 412c to the the clipping capability of the hoop 300.

The shape of the first blocking member 411c may be the same as the shape of the second blocking member 412c. Of course, the shapes of the two can be different. For example, the abutting portion 4122c of the second blocking member 412c is square, and the abutting portion of the first blocking member 411c and the hoop 300 is circular.

Continuing to refer to FIG. 17 , the first stopper 411c and the second stopper 412c are staggered, that is, they are located on different support parts 120 , of course, they can be located on the same support part 120 , or Make setting selections as required.

Preferably, a plurality of the first blocking members 411 c and the second blocking members 412 c are arranged at equal intervals along the outer periphery of the base portion 110 .

When assembling, first use the first limiting portion 210 to cooperate with the second limiting portion 121, insert the magnetic steel 200 between the two adjacent supporting portions 120 one by one, and make the magnetic steel 200 abuts on the base 110 . Then, the hoop 300 is sleeved on the outer periphery of the magnetic steel 200 . Then, the first stopper 411c and the second stopper 412c are respectively arranged on both sides of the hoop 300 , and the first stopper 411c and the second stopper 412c are staggered and installed. On different supporting parts 120 , the hoop 300 is clamped between the first blocking member 411c and the second blocking member 412c.

To sum up, the hoop 300 is clamped by the first stopper 411c and the second stopper 412c, and the first stopper 411c and the second stopper 412c are staggered and detachably arranged On the different support parts 120 , the connecting force points on both sides of the hoop 300 are symmetrical and staggered, that is, the contact area is increased, and the first stopper 411 c and the second stopper are raised The fixing effect of the piece 412c on the hoop 300 further stabilizes the magnetic steel 200 between the base 110 and the hoop 300 .

As can be seen from the above, the

first stopper

411a, 411b, 411c and the support portion 120 may be connected integrally or detachably, and the

second stopper

412a, 412b, 412c and the support portion 120 may be integrally or detachably connected Removable connection, and the

first stopper

411a, 411b, 411c and the

second stopper

412a, 412b, 412c can be staggered or oppositely arranged, the connection methods are various, and the assembly methods are also diversified. The detachable connection can also be made by bonding or snap-connecting in addition to the socket connection and fastener fixing methods in the above-mentioned embodiments, which is not limited here. The rotor structure of the disc motor can be applied to a double stator intermediate rotor or a cascading disc motor type.

In addition to this, those skilled in the art can also make changes to the shape, structure and material of the hoop 30, the

first stopper

411a, 411b, 411c and the

second stopper

412a, 412b, 412c according to the actual situation. Change, as long as on the basis of the above disclosure of the present invention, the same or similar technical solutions as the present invention are adopted, the same or similar technical problems as the present invention are solved, and the same or similar technical effects as the present invention are achieved. It belongs to the protection scope of the present invention, and the specific embodiments of the present invention are not limited thereto.

Fourth Embodiment

As shown in FIG. 18 to FIG. 22 , the rotor structure of the disc motor includes a rotor disc 100 , a plurality of magnetic steels 200 and a hoop 300 , and the rotor disc 100 includes a base portion 110 and a plurality of support portions 120 . The supporting portion 120 extends outwardly from the periphery of the base portion 110 , the number of the plurality of magnetic steels 200 is the same as the number of the plurality of the supporting portions 120 , and the plurality of the magnetic steels 200 are respectively fixed to extend outwardly from the supporting portion 120 . The base portion 110 is spaced from the support portion 120; the hoop 300 is fixedly sleeved on the outer periphery of the magnetic steel 200, so that the magnetic steel 200 is fixed to the hoop 300 and the base portion 110; between the hoop 300 and the rotor disk 100, the axial positioning of the hoop 300 is performed by a fixing mechanism 400, and the fixing mechanism 400 includes a setting on the rotor disk 100 and not higher than the The first fixing structures 410d on the two sides of the rotor disk 100, the fixing mechanism 400 includes a second fixing structure 420d which is arranged on the hoop 300 and does not affect the circumferential continuity of the fibers in the hoop 300. The fixing structure 410d and the second fixing structure 420d cooperate with each other to axially position the hoop 300 .

As shown in FIG. 19 , the second fixing structure 420d includes a clamping groove formed on the inner wall of the hoop 300 for clamping the first fixing structure 410d, and connecting with the first fixing structure 410d through the first fixing structure 410d. The support portion 120 is fixed, so that the hoop 300 is sleeved on the outer periphery of the magnetic steel 200 .

Specifically, one end of at least two of the supporting portions 120 facing away from the base portion 110 defines an inserting groove 127 , and the number of the first fixing structures 410d is the same as that of the inserting grooves 127 , and the first fixing structures 410d are installed On the side where the hoop 300 and the outer periphery of the magnetic steel 200 are matched, that is, the first fixing structure 410d is installed in the slot, so that the hoop 300 is sleeved on the outer periphery of the magnetic steel 200 , the first fixing structure 410d is engaged with the inserting groove 127 .

Wherein: the number of the plurality of magnetic steels 200 is the same as that of the plurality of the supporting portions 120, and the plurality of the magnetic steels 200 are respectively fixed to extend outward from the base portion 110 and are arranged at intervals from the supporting portion 120; The hoop 300 is fixedly sleeved on the outer periphery of the magnetic steel 200, so that the magnetic steel 200 is fixed between the hoop 300 and the base 110; the first fixing structure 410d is connected to the The number of the inserting grooves 127 is the same, and the first fixing structure 410d is installed on the side surface of the hoop 300 and the outer periphery of the magnetic steel 200 , so that the hoop 300 is sleeved on the magnetic steel 200 At the outer periphery, the first fixing structure 410d is engaged with the inserting groove 127 .

The magnetic steel 200 is placed between two adjacent supporting parts 120, so that a plurality of the magnetic steel 200 are arranged in a ring shape, and then the hoop 300 is sleeved on the outer periphery of the magnetic steel 200, And the first fixing structure 410d is engaged with the inserting groove 127 on the support portion 121, so that the magnetic steel 200 is fixed between the hoop 300 and the base portion 110, compared with the prior art , effectively preventing the axial displacement of the hoop 300 or the risk of loosening during the rotation process, and there is no need to inject glue between the magnetic steel and the rotor disk, and there is no need to damage the magnetic steel structure to adapt to the screw fixing method, avoiding connection failure. , and easy to assemble.

As shown in FIGS. 20 and 22 , the axial dimension of the rotor disk 100 is short, which means that the thickness of the rotor disk 100 is relatively thin, and the thicknesses of the base portion 110 and the support portion 120 may be consistent, wherein the The support portion 120 includes two opposite first side surfaces 12001 and second side surfaces 12002 located on both sides of the rotor disk 100 in the axial direction. The distance between the first side surface 12001 and the second side surface 12002 refers to the The thickness of the support portion 120, the insert groove 127 is located on the end of the support portion 120 away from the base portion 110, and extends from the middle position of the end portion to the first side 12001, that is, the insert groove 127 The extension length is smaller than the distance from the first side surface 12001 to the second side surface 12002, so that the first fixing structure 410d can slide into the embedding groove 127 from the direction of the first side surface 12001, and is connected with all the The inserting grooves 127 are engaged so that the hoop 300 is sleeved on the outer periphery of the magnetic steel 200 .

Since the extending length of the inserting groove 127 is smaller than the distance between the first side surface 12001 and the second side surface 12002, when the first fixing structure 410d is engaged in the inserting groove 127, the Both sides of the hoop 300 are flush with both sides of the magnetic steel 200, so that the outer periphery of the hoop 300 can be contacted and fixed. The magnetic steel 200 undergoes radial displacement during high-speed rotation. It can be seen that the extension length of the insert groove 127 determines the matching relationship between the hoop 300 and the magnetic steel 200. Of course, the thickness of the hoop 300 can be adjusted. When the thickness of the magnetic steel 200 is smaller than that of the magnetic steel 200, when the first fixing structure 410d is engaged with the inserting groove 127, the hoop 300 is located between the first side 12001 and the second side 12002, That is, the hoop 300 can be located at the middle position of the magnetic steel 200 to improve the fixing effect of the hoop 300 to the magnetic steel 200 .

Preferably, among the plurality of supporting parts 120 , only the supporting parts 120 of the same number as the first fixing structures 410 d are provided with the corresponding inserting grooves 127 , so as to reduce the processing cost. In an example, the number of the first fixing structures 410d is three, the number of the support parts 120 is sixteen, and only three of the support parts 120 have the inserting grooves 127 . And the support parts 120 with the inserting grooves 127 are arranged at equal intervals along the periphery of the base part 110 , so that the hoop 300 is evenly stressed on the rotor disk 100 , thereby improving the connection between the two strength.

As shown in FIG. 21 and FIG. 22 , the first fixing structure 410d includes a snap portion 411d, and the snap portion 411d is used for engaging with the insert groove 127, and it can be seen that the shapes of the two are matched. In an example, the cross-sections of the clipping portion 411d and the inserting groove 127 are both semicircular, of course, the cross-sections of the clipping portion 411d and the inserting slot 127 may also be in other shapes, such as a square shape or cone, etc.

The thickness of the engaging portion 411d may be smaller than the extension length of the inserting groove 127 , so that when the engaging portion 411d is engaged in the inserting groove 127 , the engaging portion 411d will reach the first side surface. There is a gap between the 12001 and the gap can be filled with adhesive, so that the hoop 300 is bonded to the support portion 120, so that the hoop 300 passes through the clamping portion 810 and the support portion. The inserting grooves 127 on the 120 are engaged and fixed by means of bonding, so that the hoop 300 can be fastened and sleeved on the outer periphery of the magnetic steel 200 . The adhesive is located between the hoop 300 and the support portion 120. Compared with the existing technology between the magnetic steel 200 and the hoop 300, the adhesive is filled in the In the inserting groove 127, the hoop 300 and the clamping portion 810 can be bonded to the support portion 120, and the fixing of the hoop 300 is effectively prevented due to the failure of the adhesive. The binder may be glue or the like, which is not limited herein.

Continuing to refer to FIG. 22 , at least one accommodating groove 124 for accommodating adhesive is opened in the embedding groove 127 . When the embedding groove 127 is filled with adhesive, the adhesive can be adsorbed to the accommodating groove 124 , effectively preventing the adhesive from loosening and affecting the bonding effect between the hoop 300 and the support portion 120 . It should be noted that when the engaging portion 411d is engaged in the inserting groove 123, part or all of the accommodating groove 124 is located between the engaging portion 411d and the first side surface 12001, In this way, when the adhesive is filled into the inserting groove 127 , the adhesive can be correspondingly filled into the accommodating groove 124 .

The number of the accommodating grooves 124 may be multiple. In one example, the number of the accommodating grooves 124 is two, and they are arranged along the extending length of the inserting grooves 123 . The shape of the accommodating groove 124 is not limited here, as long as it can accommodate the adhesive.

As shown in FIG. 19 to FIG. 21 , the first fixing structure 410d further includes a fixing portion 412d for being mounted on the hoop 300 , and the fixing portion 412d is connected with the clamping portion 411d. The fixing portion 412d is mounted on the side surface of the hoop 300 that matches the outer periphery of the magnetic steel 200 , that is, mounted on the inner wall of the hoop 300 .

The fixing portion 412d and the engaging portion 411d can be integrally formed, and the engaging portion 411d can be located in the middle of the fixing portion 820 to enhance the strength of the first fixing structure 410d and make the first fixing structure 410d stronger. A fixing structure 410d can be stably mounted on the hoop 300 .

Continuing to refer to FIG. 21 , the fixing portion 412d is embedded in the hoop 300, and only the engaging portion 411d is exposed to the outside, thus preventing the fixing portion 412d from blocking the engaging portion 411d from sliding in. phenomenon in the insert groove 127 .

As shown in FIG. 19 to FIG. 21 , the inner wall of the hoop 300 is provided with at least one clamping groove, and the clamping groove can be located in the middle position of the hoop 300 for the fixing portion 412d to be clamped. The card slot is adapted to the cross section of the fixing portion 412d, and both can be circular or square.

Since the number of the first fixing structures 410d is two or more, the clamping groove can extend along the inner wall of the hoop 300 to form an annular structure, and can be clamped in the annular clamping groove at this time. A plurality of the first fixing structures 410d. Of course, the numbers of the card slots 320 and the first fixing structures 410d may be the same and correspond one-to-one.

The hoop 300 can be made of high-strength metal or fiber material, wherein the hoop 300 made of metal can be formed by metal stamping, and the inner wall of the hoop 300 is provided with a clamping groove. The fibrous hoop 300 can be formed by filament winding, and the clamping groove can be formed by way of mold reservation or overall removal, so that the fiber does not need to be cut to avoid the phenomenon of strength reduction. The fibers may be glass fibers, carbon fibers, or the like.

As shown in FIGS. 18 to 20 , the magnetic steel 200 and the support portion 120 are arranged at intervals, so that a plurality of the magnetic steels 200 are arranged in a circle. Specifically, the base portion 110 is circular, a plurality of the support portions 120 are arranged at equal intervals along the outer periphery of the base portion 110 , and the magnetic steel is installed between two adjacent support portions 120 . 200. In this way, the support portions 120 on both sides of the magnetic steel 200 in the circumferential direction can fix the magnetic steel 200 in the circumferential direction.

As shown in FIG. 19 , the magnetic steel 200 is respectively provided with the first limiting portion 210 on both sides of the circumferential direction, and the support portion 120 is provided with the first limiting portion 210 on both sides of the circumferential direction respectively. The second limiting portion 121 matched with the positioning portion 210, through the cooperation of the two, the magnetic steel 200 can be fastened between the two supporting portions 120, and the magnetic steel 200 can be connected to the axis in the circumferential direction. fixed upwards.

The first limiting portion 210 may be in a concave shape, and the second limiting portion 121 may be in a convex shape, and the shapes of the two are compatible, and both are circular or square. The concave first limiting portion 210 can extend on the magnetic steel 200 , so that the second limiting portion 121 is inserted into the first limiting portion 210 , and the magnetic steel 200 is inserted into the first limiting portion 210 . The first limiting portion 210 is matched with the second limiting portion 121 , so that the first limiting portion 210 can be inserted between the two supporting portions 120 and abut against the substrate 110 . Of course, the first limiting portion 210 may be convex, the second limiting portion 121 may be concave, and the concave second limiting portion 121 may extend on the support portion 120, so that the The first limiting portion 210 is inserted into the second limiting portion 121 . Then, the magnetic steel 200 is inserted between the two support parts 120 .

After the magnetic steel 200 is inserted between the two supporting parts 120 , the magnetic steel 200 is aligned with the first side 12001 and the second side 12002 on both sides of the rotor disk 100 in the axial direction, respectively. Flat, refer to Figure 22, that is, the thickness of the two can be the same. At this time, the end of the magnetic steel 200 facing away from the base plate 110 may exceed the support portion 120 by a little distance, so that the hoop 300 can be sleeved on the outer periphery of the magnetic steel 200 .

The rotor structure assembly method of the disc motor is as follows:

S100, using the first limiting portion 210 to cooperate with the second limiting portion 121, inserting the magnetic steel 200 between the two adjacent supporting portions 120 one by one, and making the magnetic steel 200 abut against connected to the base 110 .

S200 , determining the number and positions of the supporting parts 120 for opening the inserting grooves 127 , and engaging the first fixing structures 410d corresponding to the inserting grooves 127 in the clamping grooves of the hoop 300 .

S300 , the first fixing structure 410d on the hoop 300 can be slid into the inserting groove 127 from the direction of the first side 12001 , so that the hoop 300 is sleeved on the outer periphery of the magnetic steel 200 edge.

S400 , injecting the adhesive into the inserting groove 127 and filling the accommodating groove 124 with the adhesive.

To sum up, both ends of the magnetic steel 200 in the radial direction are fixed by the base portion 110 and the hoop 300 , and both sides of the magnetic steel 200 in the circumferential direction are fixed by the support portion 120 , and the support The second limiting portion 121 is provided on the magnetic steel 200 , the first limiting portion 210 is provided on the magnetic steel 200 , and the first limiting portion 210 cooperates with the second limiting portion 121 , so as to fix the magnetic steel 200 in the axial direction. By adopting the above structure, the magnetic steel 200 is fastened on the rotor disk 100 to effectively prevent the magnetic steel 200 from being displaced due to high-speed rotation. In addition, the hoop 300 is clamped with the insert groove 127 on the support portion 120 through the first fixing structure 410d, and the adhesive can be injected into the insert groove 127, and the adhesive Filling in the accommodating groove 124 effectively improves the connection strength between the two, and effectively prevents the adhesive from being detached, and avoids damage to the magnetic steel 200 to adapt to screw tightening and connection failure.

That is to say, as long as on the basis of the above disclosure of the present invention, the same or similar technical solutions as the present invention are adopted, the same or similar technical problems as the present invention are solved, and the same or similar technical effects as the present invention are achieved. , all fall within the protection scope of the present invention, and the specific embodiments of the present invention are not limited thereto.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

It should be understood by those skilled in the art that the embodiments of the present invention shown in the above description and the accompanying drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may be modified or modified in any way without departing from the principles.

Claims

A rotor structure of a disc motor, characterized in that it includes a rotor disc, a plurality of magnetic steels and a hoop, the rotor disc includes a base portion and a plurality of support portions, the support portions extend outward from the base portion The number of the plurality of the magnetic steels and the plurality of the supporting parts is the same, and the plurality of the magnetic steels are respectively fixed to extend outward from the base part and are spaced apart from the supporting parts; the hoop is It is fixedly sleeved on the outer periphery of the magnetic steel, so that the magnetic steel is fixed between the hoop and the base; between the hoop and the rotor disk, the axis of the hoop is fixed by a fixing mechanism. The fixing mechanism includes a first fixing structure arranged on the rotor disk and not higher than the two sides of the rotor disk, and the fixing mechanism includes a first fixing structure arranged on the hoop and does not affect the inside of the hoop A second fixing structure with continuous fiber circumferential direction, the first fixing structure and the second fixing structure cooperate with each other to axially position the hoop.
The rotor structure of a disc motor according to claim 1, wherein the first fixing structure comprises a first blocking member and a second blocking member, the first blocking member and the second blocking member are respectively located in the On both sides of the rotor disk in the axial direction, the second fixing structure is the side surfaces of the hoop which are respectively matched with the first blocking member and the second blocking member, so that the hoop is fixedly clamped to the first stopper. between a stopper and the second stopper.
The rotor structure of a disc motor according to claim 2, wherein the first stopper is integrally formed with the support portion, and the second stopper is detachably connected to the support portion.
The rotor structure of a disc motor according to claim 3, wherein the second stopper includes a connecting portion and an abutting portion, the connecting portion and the abutting portion are connected, and the connecting portion is connected to the abutting portion. The part is sleeved on the support part and fixed by a fastener, so that the abutting part abuts on the side of the hoop away from the first stopper.
The rotor structure of a disc motor according to claim 2, wherein the first stopper and the second stopper are both detachably connected to the support portion.
6. The rotor structure of the disc motor according to claim 5, wherein the support portion is provided with a first clamping groove, so that the first blocking member is mounted on the first clamping groove and passes through the first clamping groove. Fasteners are fixed; the support portion is provided with a second clamping groove, so that the second blocking member is installed on the second clamping groove and fixed by the fasteners.
The rotor structure of a disc motor according to claim 2, wherein the first stopper and the second stopper are both integrally formed with the support portion.
The rotor structure of the disc motor according to claim 7, wherein the hoop comprises at least one fiber strip, the fiber strip is wound around the outer periphery of the magnetic steel, and the fiber strip is located between the first stopper and the second stopper.
The rotor structure of a disc motor according to claim 3, 5 or 7, wherein the number of the first stopper and the second stopper are the same, and are arranged in a one-to-one correspondence.
The rotor structure of a disc motor according to claim 3, 5 or 7, wherein the first stopper and the second stopper are arranged staggered.
The rotor structure of a disc motor according to claim 1, wherein a plurality of first stoppers are arranged at equal intervals along the outer periphery of the base; a plurality of second stoppers are arranged along the outer periphery of the base, etc. Distance interval setting.
The rotor structure of a disc motor according to claim 1, wherein the second fixing structure comprises a clamping groove formed on the inner wall of the hoop, for clamping the first fixing structure, and passing through the first fixing structure. The first fixing structure is fixed to the supporting portion so that the hoop is sleeved on the outer periphery of the magnetic steel.
The rotor structure of a disk motor according to claim 12, wherein an inserting groove for fixing the first fixing structure is defined at one end of the support portion facing away from the base portion.
14. The rotor structure of a disk motor as claimed in claim 13, wherein the insert groove is located on the end of the support portion facing away from the base portion, and the insert groove extends to a thickness of the support portion. side, so that the first fixing structure slides into the inserting groove from the side.
The rotor structure of a disc motor according to claim 14, wherein the insert groove is filled with adhesive, so that the first fixing structure and the hoop are respectively bonded to the support portion .
The rotor structure of the disc motor according to claim 15, wherein at least one accommodating groove for accommodating the adhesive is opened in the inserting groove.
The rotor structure of a disc motor according to claim 13, wherein the first fixing structure comprises a clamping part and a fixing part, the clamping part is connected with the fixing part, and the fixing part is The clamping part is embedded in the hoop, and the clamping part is clamped in the embedding groove.
The rotor structure of a disc motor according to claim 12, wherein the number of the clamping grooves is one, and the clamping grooves are annular.
The rotor structure of a disc motor according to claim 13, wherein the supporting portions with the inserting grooves are provided at equal intervals along the periphery of the base portion.
The rotor structure of the disc motor according to claim 1, wherein the first limiting portion is provided on the side of the magnetic steel facing the supporting portion, and the supporting portion is provided with a The second limiting portion matched with the first limiting portion.
The rotor structure of the disc motor according to claim 1, wherein the hoop is made of metal or fiber material.