Rotor structure and motor

Abstract

The utility model provides a rotor structure and a motor, in the rotor structure, a first dynamic balance plate, a rotor assembly and a second dynamic balance plate are sequentially sleeved on a rotating shaft; the rotating shaft is provided with a first mistake-proof groove formed in the axial direction. The first dynamic balance plate is provided with a first protrusion extending in the radial direction, and the first protrusion is installed in the first mistake-proof groove. The second dynamic balance plate is provided with a second protrusion extending in the radial direction, and the second protrusion is installed in the first mistake proofing groove. The first protrusions and the second protrusions are different in size. According to the utility model, the first dynamic balance plate and the second dynamic balance plate can be quickly identified according to the sizes of the bulges, the dynamic balance plate with the small bulge size is used as the front dynamic balance plate and is firstly arranged on the rotating shaft, and the dynamic balance plate with the large bulge size is used as the rear dynamic balance plate and is finally arranged on the rotating shaft; by means of the arrangement, the first dynamic balance plate and the second dynamic balance plate can be prevented from being assembled by mistake, the rotor structure can be effectively prevented from being assembled by mistake, and assembling consistency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor structures, in particular to a rotor structure and a motor. Background Art

[0002] The rotor structure includes the shaft, the front dynamic balance plate, the rear dynamic balance plate and the rotor assembly. The rotor structure has a skewed pole and oil cooling structure. The correctness of the assembly of each part must be ensured, otherwise the motor performance will be affected. The two dynamic balance plates are not much different. The existing rotor structure assembly is manually identified and error-proofed. The front dynamic balance plate has a chamfer, while the rear dynamic balance plate has no chamfer. Error-proofing through appearance identification is prone to the risk of wrong assembly. Utility Model Content

[0003] The utility model provides a rotor structure and a motor to solve the problem that the existing rotor structure is easily misassembled.

[0004] A rotor structure comprises a rotating shaft, a first dynamic balancing plate, a second dynamic balancing plate and a rotor assembly;

[0005] The first dynamic balancing plate, the rotor assembly and the second dynamic balancing plate are sequentially mounted on the rotating shaft;

[0006] The rotating shaft is provided with a first anti-error groove arranged along the axial direction;

[0007] The first dynamic balancing plate is provided with a first protrusion extending in a radial direction, and the first protrusion is installed in the first error prevention groove;

[0008] The second dynamic balancing plate is provided with a second protrusion extending in a radial direction, and the second protrusion is installed in the first error prevention groove;

[0009] The first protrusion and the second protrusion have different sizes.

[0010] Preferably, the rotor assembly is provided with a third protrusion extending in the radial direction, and the third protrusion is installed in the first anti-error groove;

[0011] The size of the third protrusion is between the size of the first protrusion and the size of the second protrusion.

[0012] Preferably, the size of the first end region of the first error prevention groove is larger than the size of the second end region.

[0013] Preferably, the rotor structure further comprises a fastener;

[0014] The fastener is installed on the rotating shaft and is used to lock the first dynamic balancing plate, the second dynamic balancing plate and the rotor assembly.

[0015] Preferably, the rotating shaft comprises a rotating shaft body and a baffle extending radially from one end of the rotating shaft body;

[0016] The first dynamic balancing plate, the rotor assembly and the second dynamic balancing plate are sequentially mounted on the rotating shaft body, the first dynamic balancing plate abuts against the baffle plate, and the second dynamic balancing plate abuts against the fastener.

[0017] Preferably, an anti-error boss is provided on a side of the first dynamic balancing plate away from the rotor assembly.

[0018] Preferably, a side surface of the first dynamic balancing plate close to the rotor assembly and a side surface of the second dynamic balancing plate close to the rotor assembly are both provided with balancing grooves.

[0019] Preferably, the balancing groove comprises an annular groove arranged in the central area of ​​the dynamic balancing plate and at least two Y-shaped grooves arranged radially from the circumference of the annular groove; the opening of the Y-shaped groove faces outside the dynamic balancing plate.

[0020] Preferably, the rotor assembly comprises at least two rotor cores;

[0021] Each of the rotor cores is provided with second anti-error grooves at intervals along the circumferential direction of the rotor core;

[0022] The second anti-error grooves of two adjacent rotor cores correspond to each other.

[0023] A motor comprises the rotor structure.

[0024] The rotor structure provided by the embodiment of the utility model is applied to the motor, and specifically includes a rotating shaft, a first dynamic balancing plate, a second dynamic balancing plate and a rotor assembly. During installation, the first dynamic balancing plate, the rotor assembly and the second dynamic balancing plate are sequentially mounted on the rotating shaft, and the rotor assembly is located between the first dynamic balancing plate and the second dynamic balancing plate. Specifically, the first dynamic balancing plate is mounted on the rotating shaft as the front dynamic balancing plate, and then the rotor assembly is mounted on the rotating shaft, and finally the second dynamic balancing plate is mounted on the rotating shaft as the rear dynamic balancing plate to complete the assembly of the rotor structure. Because the rotor structure has inclined poles and oil cooling structure, it is necessary to ensure the correctness of assembly of various parts, otherwise it will affect the performance of the motor; during the design, a first anti-error groove is provided in the axial direction on the rotating shaft, and a first protrusion extending in the radial direction is provided on the first dynamic balancing plate, and the first protrusion is installed in the first anti-error groove, which facilitates the installation of the first dynamic balancing plate; a second protrusion extending in the radial direction is provided on the second dynamic balancing plate, and the second protrusion is installed in the first anti-error groove, which facilitates the installation of the second dynamic balancing plate; the first protrusion and the second protrusion are different in size, and the first dynamic balancing plate and the second dynamic balancing plate can be quickly identified according to the size of the protrusion. The dynamic balancing plate with a smaller protrusion size is used as the front dynamic balancing plate and is first installed on the rotating shaft, and the dynamic balancing plate with a larger protrusion size is used as the rear dynamic balancing plate and is finally installed on the rotating shaft. This arrangement can prevent the first dynamic balancing plate and the second dynamic balancing plate from being installed in the wrong position, which can effectively prevent the rotor structure from being installed in the wrong position and ensure the consistency of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 1 It is an exploded view of the rotor structure in one embodiment of the utility model;

[0027] Figure 2 is a cross-sectional view of a rotor structure in one embodiment of the utility model;

[0028] Figure 3 It is an isometric view of a rotating shaft in one embodiment of the utility model;

[0029] Figure 4 It is an isometric view of the first dynamic balancing plate in one embodiment of the utility model;

[0030] Figure 5 It is an isometric view of the second dynamic balancing plate in a first viewing angle in one embodiment of the utility model;

[0031] Figure 6is an isometric view of a second dynamic balancing plate in a second viewing angle in an embodiment of the utility model;

[0032] Figure 7 It is a side view of a rotor core in one embodiment of the utility model.

[0033] Among them, 1. rotating shaft; 101. rotating shaft body; 102. baffle; 2. first dynamic balancing plate; 3. second dynamic balancing plate; 4. rotor assembly; 41. rotor core; 42. second anti-error groove; 5. first anti-error groove; 6. first protrusion; 7. second protrusion; 8. third protrusion; 9. fastener; 10. anti-error boss; 11. balancing groove; 111. annular groove; 112. Y-shaped groove. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The utility model embodiment provides a rotor structure, referring to Figure 1-5The rotor structure includes a rotating shaft 1, a first dynamic balancing plate 2, a second dynamic balancing plate 3 and a rotor assembly 4; the first dynamic balancing plate 2, the rotor assembly 4 and the second dynamic balancing plate 3 are sequentially mounted on the rotating shaft 1; the rotating shaft 1 is provided with a first anti-error groove 5 arranged in an axial direction; the first dynamic balancing plate 2 is provided with a first protrusion 6 extending in a radial direction, and the first protrusion 6 is installed in the first anti-error groove 5; the second dynamic balancing plate 3 is provided with a second protrusion 7 extending in a radial direction, and the second protrusion 7 is installed in the first anti-error groove 5; the sizes of the first protrusion 6 and the second protrusion 7 are different.

[0038] As an example, the rotor structure is applied to the motor, and specifically includes a rotating shaft 1, a first dynamic balancing plate 2, a second dynamic balancing plate 3 and a rotor assembly 4; during installation, the first dynamic balancing plate 2, the rotor assembly 4 and the second dynamic balancing plate 3 are sequentially mounted on the rotating shaft 1, and the rotor assembly 4 is located between the first dynamic balancing plate 2 and the second dynamic balancing plate 3. Specifically, the first dynamic balancing plate 2 is mounted on the rotating shaft 1 as a front dynamic balancing plate, and then the rotor assembly 4 is mounted on the rotating shaft 1, and finally the second dynamic balancing plate 3 is mounted on the rotating shaft 1 as a rear dynamic balancing plate to complete the assembly of the rotor structure. Because the rotor structure has a skewed pole and oil cooling structure, the correctness of the assembly of each part must be ensured, otherwise the motor performance will be affected; during the design, a first anti-error groove 5 is provided in the axial direction on the rotating shaft 1, and a first protrusion 6 extending in the radial direction is provided on the first dynamic balancing plate 2. The first protrusion 6 is installed in the first anti-error groove 5 to facilitate the installation of the first dynamic balancing plate 2; a second protrusion 7 extending in the radial direction is provided on the second dynamic balancing plate 3, and the second protrusion 7 is installed in the first anti-error groove 5 to facilitate the installation of the second dynamic balancing plate 3; the first protrusion 6 and the second protrusion 7 are different in size, and the first dynamic balancing plate 2 and the second dynamic balancing plate 3 can be quickly identified according to the size of the protrusion. The dynamic balancing plate with a small protrusion size is used as the front dynamic balancing plate and is first installed on the rotating shaft 1, and the dynamic balancing plate with a large protrusion size is used as the rear dynamic balancing plate and is finally installed on the rotating shaft 1. This setting can prevent the first dynamic balancing plate 2 and the second dynamic balancing plate 3 from being installed in the wrong position, and can effectively prevent the rotor structure from being installed in the wrong position, and ensure the consistency of assembly. Among them, the size of the protrusion is the thickness corresponding to the width of the first anti-error groove 5.

[0039] In one embodiment, referring to Figure 1 and Figure 7 The rotor assembly 4 is provided with a third protrusion 8 extending in the radial direction, and the third protrusion 8 is installed in the first anti-error groove 5; the size of the third protrusion 8 is between the size of the first protrusion 6 and the size of the second protrusion 7.

[0040] As an example, during the design, a third protrusion 8 extending in the radial direction is provided on the rotor assembly 4, and the third protrusion 8 is installed in the first anti-mistake groove 5, which facilitates the installation of the rotor assembly 4; the size of the third protrusion 8 is between the size of the first protrusion 6 and the size of the second protrusion 7, specifically when the first dynamic balancing plate 2 is the front dynamic balancing plate and the second dynamic balancing plate 3 is the rear dynamic balancing plate; the size of the third protrusion 8 can be set to be the same as the size of the first protrusion 6 and smaller than the size of the second protrusion 7; the size of the third protrusion 8 can also be set to be larger than the size of the first protrusion 6 and the same as the size of the second protrusion 7; the size of the third protrusion 8 can also be set to be larger than the size of the first protrusion 6 and smaller than the size of the second protrusion 7. This arrangement makes it easy for people to identify the first dynamic balancing plate 2, the second dynamic balancing plate 3 and the rotor assembly 4, which can effectively prevent the rotor structure from being misassembled and ensure the consistency of assembly.

[0041] In one embodiment, referring to Figure 3 , the size of the first end region of the first error prevention groove 5 is greater than the size of the second end region;

[0042] The first protrusion 6 is installed in the first end region, and the second protrusion 7 is installed in the second end region.

[0043] As an example, during the design, the size of the first end area of ​​the first anti-error groove 5 is larger than the size of the second end area, which can limit the installation position of the first dynamic balancing plate 2 and the second dynamic balancing plate 3. The dynamic balancing plate with a large protrusion cannot be installed in the area with a small size of the first anti-error groove 5. This can prevent the first dynamic balancing plate 2 and the second dynamic balancing plate 3 from being installed in the wrong position, thereby ensuring the assembly efficiency of the rotor structure.

[0044] In one embodiment, referring to Figure 1 and Figure 2 The rotor structure also includes a fastener 9; the fastener 9 is installed on the rotating shaft 1 and is used to lock the first dynamic balancing plate 2, the second dynamic balancing plate 3 and the rotor assembly 4.

[0045] As an example, the rotor structure further includes a fastener 9; during installation, the fastener 9 is installed on the rotating shaft 1, and the first dynamic balancing plate 2, the second dynamic balancing plate 3 and the rotor assembly 4 can be locked to ensure the reliability of the rotor structure assembly.

[0046] In one embodiment, referring to Figure 1 and Figure 2 The rotating shaft 1 includes a rotating shaft body 101 and a baffle plate 102 extending radially from one end of the rotating shaft body 101; the first dynamic balancing plate 2, the rotor assembly 4 and the second dynamic balancing plate 3 are sequentially mounted on the rotating shaft body 101, the first dynamic balancing plate 2 abuts against the baffle plate 102, and the second dynamic balancing plate 3 abuts against the fastener 9.

[0047] As an example, the shaft 1 includes a shaft body 101 and a baffle 102; the shaft body 101 is used to install other parts of the rotor structure, and the first dynamic balancing plate 2, the rotor assembly 4 and the second dynamic balancing plate 3 are sequentially mounted on the shaft body 101; the baffle 102 extends radially from one end of the shaft body 101, the first dynamic balancing plate 2 abuts against the baffle 102, and the second dynamic balancing plate 3 abuts against the fastener 9, so that the fastener 9 and the baffle 102 cooperate to lock the first dynamic balancing plate 2, the second dynamic balancing plate 3 and the rotor assembly 4 to ensure the reliability of the rotor structure assembly.

[0048] In one embodiment, referring to Figure 1 and Figure 4 An anti-error boss 10 is provided on a side of the first dynamic balancing plate 2 away from the rotor assembly 4 .

[0049] As an example, an anti-mistake boss 10 is provided on a side of the first dynamic balancing plate 2 away from the rotor assembly 4, so that a difference can be made between the first dynamic balancing plate 2 and the second dynamic balancing plate 3. When the first dynamic balancing plate 2 is installed in the wrong position of the second dynamic balancing plate 3, the anti-mistake boss 10 will cause the fastener 9 to be unable to be installed, thereby preventing the first dynamic balancing plate 2 and the second dynamic balancing plate 3 from being installed in the wrong position, thereby ensuring the assembly efficiency of the rotor structure.

[0050] In one embodiment, referring to Figure 1 , the fastener 9 is set as a locking nut.

[0051] As an example, the fastener 9 is configured as a locking nut, and the locking nut is threadably matched with the rotating shaft 1 to facilitate installation and disassembly of the rotor structure.

[0052] In one embodiment, referring to Figure 6 A balancing groove 11 is provided on a side of the first dynamic balancing plate 2 close to the rotor assembly 4 and a side of the second dynamic balancing plate 3 close to the rotor assembly 4 .

[0053] As an example, a balancing groove 11 is provided on a side of the first dynamic balancing plate 2 close to the rotor assembly 4 and a side of the second dynamic balancing plate 3 close to the rotor assembly 4. The balancing groove 11 can effectively balance the torsional force generated by the rotor assembly 4, improve the rotor structure and the quality of the products it constitutes, and reduce noise and vibration.

[0054] In one embodiment, referring to Figure 6 The balancing groove 11 includes an annular groove 111 disposed in the central area of ​​the dynamic balancing plate and at least two Y-shaped grooves 112 disposed radially from the annular groove 111; the opening of the Y-shaped groove 112 faces outside the dynamic balancing plate.

[0055] As an example, the balancing groove 11 includes an annular groove 111 and at least two Y-shaped grooves 112; the annular groove 111 is arranged in the central area of ​​the dynamic balancing plate, and at least two Y-shaped grooves 112 are respectively arranged radially from the circumference of the annular groove 111, and the openings of the Y-shaped grooves 112 face the outside of the balancing plate. This arrangement can evenly transfer the torsional force on the dynamic balancing plate from the middle to the outside, effectively balancing the torsional force generated by the rotor assembly 4, improving the rotor structure and the product quality of its components, and reducing noise and vibration.

[0056] In one embodiment, referring to Figure 1 and Figure 7 The rotor assembly 4 includes at least two rotor cores 41; each rotor core 41 is provided with second anti-error grooves 42 spaced apart along the circumferential direction of the rotor core 41; the second anti-error grooves 42 of two adjacent rotor cores 41 correspond to each other.

[0057] As an example, the rotor assembly 4 includes at least two rotor cores 41; during installation, the two adjacent rotor cores 41 are staggered at an angle. To prevent incorrect installation, second anti-error grooves 42 are provided on each rotor core 41 along the circumferential direction of the rotor core 41. The second anti-error grooves 42 of the two adjacent rotor cores 41 correspond to each other, and the accuracy of assembly is ensured by positioning and cooperating with the second anti-error grooves 42 through assembly tooling.

[0058] An embodiment of the utility model provides a motor, including a rotor structure.

[0059] As an example, the motor includes a rotor structure, which includes a rotating shaft 1, a first dynamic balancing plate 2, a second dynamic balancing plate 3 and a rotor assembly 4; during installation, the first dynamic balancing plate 2, the rotor assembly 4 and the second dynamic balancing plate 3 are sequentially mounted on the rotating shaft 1, and the rotor assembly 4 is located between the first dynamic balancing plate 2 and the second dynamic balancing plate 3. Specifically, the first dynamic balancing plate 2 is mounted on the rotating shaft 1 as a front dynamic balancing plate, and then the rotor assembly 4 is mounted on the rotating shaft 1, and finally the second dynamic balancing plate 3 is mounted on the rotating shaft 1 as a rear dynamic balancing plate to complete the assembly of the rotor structure. Because the rotor structure has skew poles and oil cooling structure, it is necessary to ensure the correctness of assembly of various parts, otherwise it will affect the performance of the motor; during design, a first anti-error groove 5 arranged in the axial direction is provided on the rotating shaft 1, and a first protrusion 6 extending in the radial direction is provided on the first dynamic balancing plate 2. The first protrusion 6 is installed in the first anti-error groove 5, which facilitates the installation of the first dynamic balancing plate 2; a second protrusion 7 extending in the radial direction is provided on the second dynamic balancing plate 3, and the second protrusion 7 is installed in the first anti-error groove 5, which facilitates the installation of the second dynamic balancing plate 3; the first protrusion 6 and the second protrusion 7 are different in size, and the first dynamic balancing plate 2 and the second dynamic balancing plate 3 can be quickly identified according to the size of the protrusions. The dynamic balancing plate with a small protrusion size is used as the front dynamic balancing plate and is first installed on the rotating shaft 1, and the dynamic balancing plate with a large protrusion size is used as the rear dynamic balancing plate and is finally installed on the rotating shaft 1. This arrangement can prevent the first dynamic balancing plate 2 and the second dynamic balancing plate 3 from being installed in the wrong position, which can effectively prevent the rotor structure from being installed in the wrong position and ensure the consistency of assembly.

[0060] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A rotor structure, characterized in that: It includes a rotating shaft, a first dynamic balancing plate, a second dynamic balancing plate and a rotor assembly; The first dynamic balancing plate, the rotor assembly and the second dynamic balancing plate are sequentially mounted on the rotating shaft; The rotating shaft is provided with a first anti-error groove arranged along the axial direction; The first dynamic balancing plate is provided with a first protrusion extending in a radial direction, and the first protrusion is installed in the first error prevention groove; The second dynamic balancing plate is provided with a second protrusion extending in a radial direction, and the second protrusion is installed in the first error prevention groove; The first protrusion and the second protrusion have different sizes.

2. The rotor structure according to claim 1, characterized in that: The rotor assembly is provided with a third protrusion extending in a radial direction, and the third protrusion is installed in the first anti-error groove; The size of the third protrusion is between the size of the first protrusion and the size of the second protrusion.

3. The rotor structure according to claim 1, characterized in that: The size of the first end region of the first error prevention groove is greater than the size of the second end region.

4. The rotor structure according to claim 1, characterized in that: The rotor structure also includes a fastener; The fastener is installed on the rotating shaft and is used to lock the first dynamic balancing plate, the second dynamic balancing plate and the rotor assembly.

5. The rotor structure according to claim 4, characterized in that: The rotating shaft comprises a rotating shaft body and a baffle extending radially from one end of the rotating shaft body; The first dynamic balancing plate, the rotor assembly and the second dynamic balancing plate are sequentially mounted on the rotating shaft body, the first dynamic balancing plate abuts against the baffle, and the second dynamic balancing plate abuts against the fastener.

6. The rotor structure according to claim 5, characterized in that: An anti-error boss is provided on a side of the first dynamic balancing plate away from the rotor assembly.

7. The rotor structure according to claim 1, characterized in that: A side surface of the first dynamic balancing plate close to the rotor assembly and a side surface of the second dynamic balancing plate close to the rotor assembly are both provided with balancing grooves.

8. The rotor structure according to claim 7, characterized in that: The balancing groove comprises an annular groove arranged in the central area of ​​the dynamic balancing plate and at least two Y-shaped grooves arranged radially from the circumference of the annular groove; the opening of the Y-shaped groove faces outside the dynamic balancing plate.

9. The rotor structure according to claim 1, characterized in that: The rotor assembly includes at least two rotor cores; Each of the rotor cores is provided with second anti-error grooves at intervals along the circumferential direction of the rotor core; The second anti-error grooves of two adjacent rotor cores correspond to each other.

10. A motor, characterized in that: The invention comprises a rotor structure as described in any one of claims 1 to 9.

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