Disc type motor and rotor thereof

Abstract

The utility model discloses a rotor, which comprises a retainer, magnetic steel and a fixing ring, and is characterized in that the edge of the retainer is uniformly provided with a plurality of placing grooves along the circumferential direction; the magnetic steel is clamped in the placement groove; the fixing ring is arranged on the retainer in a sleeving manner; an auxiliary positioning groove is formed in the side wall, close to the center position of the retainer, of the containing groove, and a jacking structure used for jacking the magnetic steel is connected into the auxiliary positioning groove. According to the rotor provided by the utility model, the friction force between the fixing ring and the magnetic steel is improved, and the risk of dislocation of the fixing ring and the retainer is reduced, so that the structural reliability of the rotor is better. The utility model also discloses a disc type motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a disc-type motor and a rotor thereof. Background Art

[0002] The disc motor is also called the axial magnetic field motor. The magnetic flux direction of the disc motor is axial. The rotor of the disc motor is the rotating part of the motor, including the cage 01, the magnetic steel 02 and the carbon fiber ring 03. Figure 1 As shown. The cage 01 is used to fix the magnet 02, and the magnet 02 is used to generate electromagnetic torque. The carbon fiber ring 03 is a fastener set on the outer ring of the cage 01, which is used to limit the position of the magnet 02. During installation, the magnet 02 is inserted into the cage 01 radially, and then the carbon fiber ring 03 is axially sleeved on the edge of the cage 01 to complete the assembly. The fixation of the carbon fiber ring 03 relies on the friction force generated by the interference fit with the edge of the cage 01.

[0003] In the prior art, in order to facilitate assembly, when the carbon fiber ring 03 is axially sleeved on the retaining frame 01, the interference fit is generally small, resulting in a relatively small friction between the two. When the rotor rotates, the carbon fiber ring 03 will be deformed due to the centrifugal force, so that the friction between the carbon fiber ring 03 and the retaining frame 01 is further reduced, which is likely to cause the axial fixation of the carbon fiber ring 03 to fail, thereby causing the carbon fiber ring 03 to be axially displaced, and then the carbon fiber ring 03 and the retaining frame 01 to be misaligned, resulting in poor structural reliability during the rotation of the rotor. Utility Model Content

[0004] In view of this, the utility model provides a rotor, which improves the friction between the fixing ring and the magnetic steel, reduces the risk of misalignment between the fixing ring and the retaining frame, and improves the structural reliability of the rotor.

[0005] The utility model also provides a disc-type motor.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rotor comprising:

[0008] A retainer, wherein the edge of the retainer is evenly distributed with a plurality of placement grooves along the circumferential direction;

[0009] A magnetic steel, clamped in the placement slot;

[0010] A fixing ring, sleeved on the retaining frame;

[0011] An auxiliary positioning groove is arranged on the side wall of the placement groove close to the center position of the retaining frame, and a tightening structure for tightening the magnetic steel is connected in the auxiliary positioning groove.

[0012] Optionally, the tightening structure includes a first tightening block and a second tightening block, the first tightening block and the second tightening block are relatively plugged into the two ends of the auxiliary positioning groove, a first tightening slope is provided on the surface of the first tightening block close to the magnetic steel, and a second tightening slope is provided on the surface of the second tightening block close to the magnetic steel, and the first tightening slope and the second tightening slope both increase in height from a side close to the magnetic steel to a side away from the magnetic steel.

[0013] Optionally, a first limiting boss is provided on the first tightening block, and the first limiting boss is provided on a side of the first tightening block away from the magnetic steel;

[0014] The second tightening block is provided with a second limiting boss, and the second limiting boss is arranged on a side of the second tightening block away from the magnetic steel;

[0015] A protruding block is arranged on the side wall of the auxiliary positioning groove away from the magnetic steel, a first side surface of the protruding block contacts the first limiting boss, and a second side surface of the protruding block contacts the second limiting boss.

[0016] Optionally, a first connecting through hole is provided on the first tightening block, and a second connecting through hole is provided on the second tightening block. The first connecting through hole and the second connecting through hole are coaxially arranged correspondingly. The first tightening block and the second tightening block are connected by a connecting piece, and the connecting piece passes through the first connecting through hole and is threadedly connected in the second connecting through hole.

[0017] Optionally, the first connecting through hole is a smooth hole, and the second connecting through hole is a threaded hole;

[0018] An end of the first connecting through hole away from the second connecting through hole is provided with a recess for accommodating the head end of the connecting member.

[0019] Optionally, the first side surface of the protruding block is arranged in parallel with the second side surface, and the first side surface is arranged in parallel with the end surface of the retaining frame.

[0020] Optionally, the retaining frame comprises a supporting body and a supporting arm, and a plurality of the supporting arms are provided, and the plurality of supporting arms are radially arranged on the outer edge of the supporting body;

[0021] The placement slot is arranged between two adjacent supporting arms.

[0022] Optionally, the first tightening block and the second tightening block are embedded in the auxiliary positioning groove, and the sum of the heights of the first tightening block and the second tightening block along the axial direction of the retaining frame is less than the thickness of the retaining frame.

[0023] Optionally, the fixing ring is a carbon fiber ring.

[0024] It can be seen from the above technical solution that the rotor provided by the utility model is provided with an auxiliary positioning groove on the retaining frame, the auxiliary positioning groove is provided at a position where the placement groove is far away from the fixing ring, and a tightening structure is provided in the auxiliary positioning groove. When the tightening structure presses one side of the magnetic steel installed in the placement groove, the side of the magnetic steel close to the fixing ring is pressed more tightly against the inner wall of the fixing ring, thereby increasing the friction between the fixing ring and the magnetic steel, avoiding axial displacement of the fixing ring, reducing the risk of misalignment between the fixing ring and the retaining frame, and making the reliability of the structure better during the rotation of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic structural diagram of a rotor of a disc motor in the prior art;

[0027] Figure 2 A schematic diagram of the assembly structure of a rotor provided in an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of a retainer provided by an embodiment of the utility model at an angle;

[0029] Figure 4 A schematic structural diagram of a retaining frame provided by an embodiment of the utility model from another angle;

[0030] Figure 5 for Figure 4 A local enlarged structural diagram of the A part;

[0031] Figure 6 A schematic structural diagram of an angle of a first tightening block provided in an embodiment of the utility model;

[0032] Figure 7 A schematic structural diagram of another angle of the first tightening block provided in an embodiment of the utility model;

[0033] Figure 8 A structural schematic diagram of a first tightening block provided in another angle in an embodiment of the utility model;

[0034] Fig. 9 A schematic structural diagram of an angle of a second tightening block provided in an embodiment of the utility model;

[0035] Fig.10 A schematic cross-sectional view of the second tightening block provided in an embodiment of the utility model;

[0036] Fig.11 A schematic diagram of the structure after the magnetic steel and the fixing ring are installed on the retaining frame provided in the embodiment of the utility model;

[0037] Fig.12 A schematic diagram of the explosion structure of the jacking structure provided by an embodiment of the utility model;

[0038] Fig.13 A schematic diagram of the assembly structure of the tightening structure provided in an embodiment of the utility model.

[0039] in:

[0040] 01. Cage; 02. Magnetic steel; 03. Carbon fiber ring;

[0041] 1. Cage;

[0042] 101, support body; 102, support arm; 103, placement slot; 104, auxiliary positioning slot; 105, protruding block; 1051, first side surface;

[0043] 2. Magnetic steel;

[0044] 3. Fixed ring;

[0045] 4. Connectors;

[0046] 5. The first tightening block;

[0047] 501, first connecting through hole; 502, first tightening inclined surface; 503, first limiting boss;

[0048] 6. The second tightening block;

[0049] 601, second connecting through hole; 602, second limiting boss; 603, second tightening inclined surface. DETAILED DESCRIPTION

[0050] The utility model discloses a rotor, which improves the friction between a fixing ring and a magnetic steel, reduces the risk of misalignment between the fixing ring and a retaining frame, and improves the structural reliability of the rotor.

[0051] The utility model also discloses a disc-type motor.

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] See also Figures 1 to 13 The rotor of the utility model comprises a retainer 1, a magnetic steel 2 and a fixing ring 3. The edge of the retainer 1 is evenly distributed with a plurality of placement grooves 103 along the circumferential direction. The magnetic steel 2 is clamped in the placement grooves 103. The fixing ring 3 is sleeved on the retainer 1, and the fixing ring 3 limits the position of the magnetic steel 2. An auxiliary positioning groove 104 is provided on the side wall of the placement groove 103 near the center of the retainer 1, and a tightening structure for tightening the magnetic steel 2 is connected in the auxiliary positioning groove 104.

[0054] The placement groove 103 is connected to the auxiliary positioning groove 104 . After the magnetic steel 2 is installed in the placement groove 103 , the side of the magnetic steel 2 close to the auxiliary positioning groove 104 is tightened by the tightening structure.

[0055] The rotor of the utility model is provided with an auxiliary positioning groove 104 on the retaining frame 1, and the auxiliary positioning groove 104 is provided at a position where the placement groove 103 is far away from the fixing ring 3. The tightening structure is provided in the auxiliary positioning groove 104. When the tightening structure presses one side of the magnetic steel 2 installed in the placement groove 103, the side of the magnetic steel 2 close to the fixing ring 3 is pressed more tightly against the inner wall of the fixing ring 3, thereby improving the friction between the fixing ring 3 and the magnetic steel 2, avoiding axial displacement of the fixing ring 3, reducing the risk of misalignment between the fixing ring 3 and the retaining frame 1, and improving the reliability of the structure during the rotation of the rotor.

[0056] Specifically, the tightening structure includes a first tightening block 5 and a second tightening block 6. Figures 6 to 13 As shown, the first tightening block 5 and the second tightening block 6 are relatively plugged into the two ends of the auxiliary positioning groove 104. In order to facilitate installation and tighten the magnetic steel 2 at the same time, the first tightening block 5 is provided with a first tightening inclined surface 502 on the surface close to the magnetic steel 2, as shown in FIG. Figure 6 and Figure 7As shown. Similarly, a second tightening bevel 603 is provided on the surface of the second tightening block 6 close to the magnetic steel 2. After the tightening structure is installed on the retaining frame 1, the first tightening bevel 502 and the second tightening bevel 603 are both increased in height from the side close to the magnetic steel 2 to the side away from the magnetic steel 2. The first tightening block 5 and the second tightening block 6 are embedded in the auxiliary positioning groove 104, and the height of the first tightening block 5 and the second tightening block 6 along the axial direction of the retaining frame 1 is less than the thickness of the retaining frame 1, so that the ends of the first tightening block 5 and the second tightening block 6 close to each other do not contact, so that the tightening bevels of the first tightening block 5 and the second tightening block 6 can press the magnetic steel 2.

[0057] In order to improve the stability of the tightening structure after installation, a first limiting boss 503 is provided on the first tightening block 5, and the first limiting boss 503 is provided on the side of the first tightening block 5 away from the magnetic steel 2. The first limiting boss 503 and the first tightening inclined surface 502 are respectively provided on two oppositely arranged side surfaces of the first tightening block 5. A second limiting boss 602 is provided on the second tightening block 6, and the second limiting boss 602 is provided on the side of the second tightening block 6 away from the magnetic steel 2. The second limiting boss 602 and the second tightening inclined surface 603 are respectively provided on two oppositely arranged side surfaces of the second tightening block 6.

[0058] In order to support the first limiting boss 503 and the second limiting boss 602, a protruding block 105 is provided on the side wall of the auxiliary positioning groove 104 away from the magnetic steel 2. The width of the protruding block 105 is smaller than the width of the corresponding side wall of the auxiliary positioning groove 104, so that the two side surfaces of the protruding block 105 parallel to the end surface of the retaining frame 1 form a supporting surface. Specifically, the first side surface 1051 of the protruding block 105 contacts the first limiting boss 503, and the second side surface (not shown in the figure) of the protruding block 105 contacts the second limiting boss 602. The first limiting boss 503 is limited by the first side surface 1051 of the protruding block 105, and the second limiting boss 602 is limited by the second side surface of the protruding block 105. The first side surface 1051 of the protruding block 105 is arranged opposite to the second side surface. The first side surface 1051 of the protruding block 105 is arranged parallel to the second side surface.

[0059] In order to position the first pressing block 5 and the second pressing block 6, a first connecting through hole 501 is provided on the first pressing block 5, and a second connecting through hole 601 is provided on the second pressing block 6. The first connecting through hole 501 and the second connecting through hole 601 are coaxially arranged correspondingly. The first pressing block 5 and the second pressing block 6 are connected by a connecting member 4. The connecting member 4 passes through the first connecting through hole 501 and is threadedly connected in the second connecting through hole 601, thereby connecting the first pressing block 5 and the second pressing block 6 together.

[0060] Specifically, the first connecting through hole 501 is a smooth hole, and the second connecting through hole 601 is a threaded hole. A recess for placing the head end of the connecting member 4 is provided at one end of the first connecting through hole 501 away from the second connecting through hole 601. Figure 6 As shown, the clearance groove is a groove of a conical structure that is matched with the head end of the connecting screw. When the connecting member 4 is a connecting bolt, the clearance groove is a groove of a cylindrical structure that is matched with the head end of the connecting bolt.

[0061] In one embodiment, the holder 1 includes a support body 101 and a support arm 102. The support arm 102 is provided in plurality, and the plurality of support arms 102 are radially and evenly arranged on the outer edge of the support body 101. Figure 4 As shown, the placement groove 103 is disposed between two adjacent support arms 102 , and the auxiliary positioning groove 104 is disposed at the connection position of the roots of the two adjacent support arms 102 .

[0062] The fixing ring 3 is a carbon fiber ring, and may also be a ring made of other materials, which is not limited here.

[0063] When installing the rotor of the utility model, firstly, the magnetic steel 2 and the fixing ring 3 are installed on the retaining frame 1, and then the first tightening block 5 and the second tightening block 6 are installed in the auxiliary positioning groove 104, the first tightening inclined surface 502 of the first tightening block 5 contacts the magnetic steel 2, and the second tightening inclined surface 603 of the second tightening block 6 contacts the magnetic steel 2. The first tightening inclined surface 502 and the second tightening inclined surface 603 generate a force to push the magnetic steel 2 through the contact and extrusion of the inclined surfaces, and the direction of the force is radially outward along the retaining frame 1. The first tightening block 5 and the second tightening block 6 are locked and connected by the connecting piece 4. The rotor of the utility model improves the reliability of the axial fixation of the fixing ring 3 by increasing the friction between the fixing ring 3 and the magnetic steel 2, reduces the risk of misalignment between the fixing ring 3 and the retaining frame 1, and makes the structural reliability of the rotor better.

[0064] The utility model also provides a disc-type motor, comprising a rotor and a stator, wherein the rotor is the above-mentioned rotor.

[0065] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this solution.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this solution, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0067] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A rotor, characterized in that: include: A retainer, wherein the edge of the retainer is evenly distributed with a plurality of placement grooves along the circumferential direction; A magnetic steel, clamped in the placement slot; A fixing ring, sleeved on the retaining frame; An auxiliary positioning groove is arranged on the side wall of the placement groove close to the center position of the retaining frame, and a tightening structure for tightening the magnetic steel is connected in the auxiliary positioning groove.

2. The rotor according to claim 1, characterized in that The tightening structure includes a first tightening block and a second tightening block, which are relatively plugged into the two ends of the auxiliary positioning groove. A first tightening inclined surface is arranged on the surface of the first tightening block close to the magnetic steel, and a second tightening inclined surface is arranged on the surface of the second tightening block close to the magnetic steel. The first tightening inclined surface and the second tightening inclined surface both increase in height from a side close to the magnetic steel to a side away from the magnetic steel.

3. The rotor according to claim 2, characterized in that A first limiting boss is provided on the first tightening block, and the first limiting boss is provided on a side of the first tightening block away from the magnetic steel; The second tightening block is provided with a second limiting boss, and the second limiting boss is arranged on a side of the second tightening block away from the magnetic steel; A protruding block is arranged on the side wall of the auxiliary positioning groove away from the magnetic steel, a first side surface of the protruding block contacts the first limiting boss, and a second side surface of the protruding block contacts the second limiting boss.

4. The rotor according to claim 2 or 3, characterized in that: The first tightening block is provided with a first connecting through hole, and the second tightening block is provided with a second connecting through hole. The first connecting through hole and the second connecting through hole are coaxially arranged correspondingly. The first tightening block and the second tightening block are connected by a connecting piece, and the connecting piece passes through the first connecting through hole and is threadedly connected in the second connecting through hole.

5. The rotor according to claim 4, characterized in that The first connecting through hole is a smooth hole, and the second connecting through hole is a threaded hole; An end of the first connecting through hole away from the second connecting through hole is provided with a recess for accommodating the head end of the connecting member.

6. The rotor according to claim 3, characterized in that The first side surface of the protruding block is arranged in parallel with the second side surface, and the first side surface is arranged in parallel with the end surface of the retaining frame.

7. The rotor according to claim 1, characterized in that The retaining frame includes a supporting body and a supporting arm, wherein the supporting arm is provided in plurality, and the plurality of supporting arms are radially arranged on the outer edge of the supporting body; The placement slot is arranged between two adjacent supporting arms.

8. The rotor according to claim 2, characterized in that The first pressing block and the second pressing block are embedded in the auxiliary positioning groove, and the sum of the heights of the first pressing block and the second pressing block along the axial direction of the retaining frame is less than the thickness of the retaining frame.

9. The rotor according to claim 1, characterized in that The fixing ring is a carbon fiber ring.

10. A disc motor, comprising a rotor and a stator, characterized in that: The rotor is the rotor according to any one of claims 1 to 9.

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