Adjustable vibration damping rotor

Abstract

The present invention discloses an adjustable vibration damping rotor, comprising a rotor mechanism and a rotating shaft arranged coaxially, wherein the rotating shaft is installed in the rotor mechanism, wherein the rotor mechanism comprises an injection molded part, multiple groups of outer rotor cores, multiple groups of permanent magnets, an inner rotor core and an elastic member, wherein the multiple groups of outer rotor cores and the multiple groups of permanent magnets are spaced and arranged circumferentially, wherein the inner rotor core is sleeved between the multiple groups of outer rotor cores and the multiple groups of permanent magnets distributed circumferentially, and the multiple groups of outer rotor cores and the multiple groups of permanent magnets are embedded in the injection molded part. The present invention can rotate from the installation cavity to the installation cavity through the outer extension block, and the inner buckle part and the inner rotor core are in contact with the elastic member with the maximum area, and the elastic member can be firmly adhered to avoid separation, and since the outer extension block is blocked by the transverse bars and the longitudinal bars on all sides, and is covered by the elastic member, a good vibration damping effect is achieved and excessive shear force is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of motor rotors, in particular to an adjustable vibration-damping rotor. Background Art

[0002] The rotor structure design of the vibration reduction motor is designed to reduce the vibration and noise during the operation of the motor and improve the stability and efficiency of the motor. The rotor of the motor is usually equipped with elastic connection components, which connect different parts of the rotor through elastic elements to buffer and reduce vibration transmission, thereby improving the stability and efficiency of the motor.

[0003] The most common method is to fill elastic parts between the inner rotor core and the outer rotor core. The elastic parts are evenly distributed between the inner and outer rotor cores along the circumference of the outer rotor core. Vibration is buffered through elastic connection to reduce vibration transmission between the inner and outer rotor cores. The inner rotor core and the outer rotor core are bonded axially by elastic parts, that is, the axial connection strength between the two parts of the rotor core is entirely determined by the elastic parts. With this arrangement, the strength of the elastic parts plays a key role. Under the action of axial force, only the elastic parts are supported. Elastic parts are often more easily damaged than the inner and outer rotor cores. Especially when a certain temperature is generated during the rotation of the motor, the elastic parts may be affected by accelerated aging, corrosion or failure, thereby increasing the risk of damage. Once the elastic parts fail, the overall vibration reduction effect will be greatly reduced, and various noise problems such as abnormal sounds will occur, especially when the elastic parts are detached.

[0004] In addition, during the filling process of the elastic member, it is necessary to ensure that the inner rotor core and the outer rotor core are in a coaxial state to avoid offset, which can easily cause unstable vibrations. Summary of the invention

[0005] The object of the present invention is to provide an adjustable vibration-damping rotor to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an adjustable vibration-damping rotor, comprising a rotor mechanism and a rotating shaft arranged coaxially, the rotating shaft being installed in the rotor mechanism, the rotor mechanism comprising an injection molded part, multiple groups of outer rotor cores, multiple groups of permanent magnets, an inner rotor core and an elastic member, the multiple groups of the outer rotor cores and the multiple groups of the permanent magnets are spaced apart and arranged circumferentially, the inner rotor core is sleeved between the multiple groups of outer rotor cores and the multiple groups of permanent magnets distributed circumferentially, the multiple groups of the outer rotor cores and the multiple groups of permanent magnets are embedded in the injection molded part, and the elastic member is installed between the inner rotor core and the injection molded part for vibration reduction.

[0007] Furthermore, both sides of the outer rotor core are inclined, the permanent magnet is fitted to the outer rotor core, and the inner and outer edges of the outer rotor core are protruding for buckling the permanent magnet.

[0008] Furthermore, an inner buckling portion is provided on the inner wall of the injection molded part, and the inner buckling portion is used to buckle with the inner rotor core, and the inner and outer sides of the elastic member between the inner buckling portion and the inner rotor core are bonded.

[0009] Further, the inner buckling portion includes a plurality of longitudinal strips extending along the axis of the injection molded part, one side of the longitudinal strip is integrally provided with an arranged transverse strip, the transverse strip is perpendicular to the axis of the injection molded part, an installation cavity for clamping the inner rotor core is provided between two adjacent transverse strips, an installation cavity extending along the axis of the injection molded part is provided between the arranged transverse strips and the adjacent longitudinal strips, the installation cavity is communicated with the installation cavity, and the longitudinal strips and the transverse strips are integrally formed on the inner side of the injection molded part;

[0010] The outer wall of the inner rotor core is provided with an integrally formed outer extension block, the inner rotor core is sleeved on the inner buckling portion, the outer extension block is moved from the mounting cavity to the mounting cavity, and the elastic member is filled into the mounting cavity and the mounting cavity to connect the inner rotor core and the inner buckling portion.

[0011] Furthermore, elastic supports are fixed on both sides of the outer extension block, and the supports on both sides are used to contact the transverse strips on both sides, so that the outer extension block is located in the middle of the transverse strips on both sides, and the elastic member fills the outer extension block around.

[0012] Furthermore, an exhaust port is provided on the outer side of the transverse strip and is communicated with the installation cavity. When the elastic member is filled, the exhaust port is used to discharge the gas in the installation cavity.

[0013] Furthermore, the inner diameter of the inner buckle part and the outer diameter of the inner rotor core are both ellipses of the same shape but different sizes, the gap between the inner buckle part and the inner rotor core is a connection gap, and the connection gap is filled with an elastic member;

[0014] The outer wall of the elliptical major axis of the inner rotor core is fitted with the inner wall of the elliptical minor axis of the inner buckling portion.

[0015] Furthermore, the elastic member is made of rubber material.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] 1. The outer extension block can be rotated from the installation cavity to the installation cavity. The inner buckle part and the inner rotor core are in contact with the elastic member with the largest area. The elastic member can adhere firmly to avoid separation. Since the outer extension block is blocked by the horizontal and longitudinal bars and covered by the elastic member, it can achieve good vibration reduction and avoid excessive shear force.

[0018] 2. During the process of filling the elastic parts, the elastic parts are filled from the connection gap, and the gas can be discharged from the exhaust port. Gaps are avoided in the elastic parts to avoid weight deviation and ensure the stability of the rotor rotation.

[0019] 3. Replace the elastic parts, remove the elastic parts in the installation cavity, and clean the local elastic parts in the connection gap to facilitate subsequent separation and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the separation structure of the rotor mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of a partial cross-sectional structure of an injection molded part of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the outer rotor core and permanent magnet of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure in which the rotor mechanism and the outer rotor core are separated in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the inner buckle part of the present invention;

[0027] Figure 7 The present invention Figure 6 A is a schematic diagram of the partially enlarged structure of the middle part;

[0028] Figure 8 It is a schematic diagram of the structure of the inner rotor core of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the inner rotor core of the present invention being sleeved in the inner buckling part;

[0030] Fig.10 It is a schematic diagram of the structure in which the inner rotor core of the present invention is sleeved in the inner buckling part and rotates.

[0031] In the figure: 1. rotor mechanism; 11. injection molded part; 111. inner buckle; 112. longitudinal bar; 113. transverse bar; 114. installation cavity; 115. installation cavity; 116. exhaust port; 12. outer rotor core; 13. permanent magnet; 14. inner rotor core; 141. outer extension block; 142. support body; 15. elastic member; 16. connection gap; 2. rotating shaft. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 10 The present invention provides a technical solution: a vibration damping rotor is a component used in rotating machinery to reduce vibration and enhance stability. Vibration is a common problem in rotating machinery, which may lead to reduced equipment performance, increased noise, increased component wear, and even cause failure. Therefore, the design and application of vibration-damping rotors are crucial to improving the performance and reliability of rotating machinery. An adjustable vibration-damping rotor is proposed, comprising a coaxially arranged rotor mechanism 1 and a rotating shaft 2, the rotating shaft 2 being installed in the rotor mechanism 1, the rotor mechanism 1 comprising an injection molded part 11, multiple groups of outer rotor cores 12, multiple groups of permanent magnets 13, an inner rotor core 14 and an elastic member 15, the multiple groups of outer rotor cores 12 and multiple groups of permanent magnets 13 are spaced and arranged circumferentially, the inner rotor core 14 is sleeved between the multiple groups of outer rotor cores 12 and multiple groups of permanent magnets 13 distributed circumferentially, the multiple groups of outer rotor cores 12 and multiple groups of permanent magnets 13 are embedded in the injection molded part 11, the elastic member 15 is installed between the inner rotor core 14 and the injection molded part 11 for vibration reduction, wherein the elastic member 15 is filled in the gap between the inner and outer rotor cores, and can form a stable support structure, which helps to enhance the overall structural strength of the rotor. This helps to prevent the rotor from being deformed or damaged during high-speed rotation.

[0034] like Figure 4 As shown, both sides of the outer rotor core 12 are inclined, the permanent magnet 13 is fitted with the outer rotor core 12, and the inner and outer edges of the outer rotor core 12 are also protruding, which is used to buckle the permanent magnet 13 to achieve a stable effect during rotation. The embedded permanent magnet 13 motor optimizes the magnetic circuit structure by embedding the permanent magnet 13 inside the rotor, so that the motor can generate higher torque at the same volume. This design improves the power density of the motor, allowing the motor to output more power in a limited space. Compared with the surface permanent magnet 13 motor, the embedded permanent magnet 13 motor has higher mechanical strength. Because the permanent magnets 13 are embedded inside the rotor, they will not fall off due to centrifugal force, thereby improving the overall mechanical safety of the motor.

[0035] like Figure 5 and Figure 6As shown, an inner snap-fitting portion 111 is provided on the inner wall of the injection molded part 11, and the inner snap-fitting portion 111 is used to snap-fit ​​with the inner rotor core 14. The elastic member 15 between the inner snap-fitting portion 111 and the inner rotor core 14 is bonded on both the inner and outer sides, wherein the elastic member 15 serves to connect the inner snap-fitting portion 111 and the inner rotor core 14 to achieve a connection effect and also a vibration reduction effect.

[0036] like Figure 7 and Figure 8 As shown, the structure of the inner buckling part 111 needs to be convenient for buckling with the inner rotor core 14 and needs to be firmly adhered under the action of the elastic member 15. The inner buckling part 111 includes a plurality of longitudinal bars 112 extending along the axis of the injection molded part 11, and one side of the longitudinal bar 112 is integrally provided with an arranged transverse bar 113, and the transverse bar 113 is perpendicular to the axis of the injection molded part 11. An installation cavity 114 for clamping the inner rotor core 14 is provided between two adjacent transverse bars 113, and an installation cavity 115 extending along the axis of the injection molded part 11 is provided between the arranged transverse bars 113 and the adjacent longitudinal bars 112, and the installation cavity 115 is connected to the installation cavity 114, and the longitudinal bars 112 and the transverse bars 113 are integrally formed on the inner side of the injection molded part 11;

[0037] The outer extension block 141 is integrally formed and arranged on the outer wall of the inner rotor core 14, and the inner rotor core 14 is sleeved on the inner snap-fitting portion 111. The outer extension block 141 moves from the mounting cavity 115 to the mounting cavity 114, and the elastic member 15 is filled into the mounting cavity 114 and the mounting cavity 115, which is used to connect the inner rotor core 14 and the inner snap-fitting portion 111. It should be noted that the inner snap-fitting portion 111 and the outer extension block 141 can increase the surface area of ​​the injection molded part 11 and the inner rotor core 14, which is used to expand the adhesion area of ​​the elastic member 15 to make the connection more secure. In addition, the outer extension block 141 is snap-fitted with the inner snap-fitting portion 111, so that the elastic member 15 is subjected to an extrusion or stretching force during the rotation of the rotor, and the outer extension block 141 has a limited range of motion in the mounting cavity 114, and the limiting motion is performed to the greatest extent to avoid damage to the elastic member 15.

[0038] like Figure 8 As shown, elastic support bodies 142 are fixed on both sides of the outer extension block 141, and the support bodies 142 on both sides are used to contact the horizontal bars 113 on both sides, so that the outer extension block 141 is located in the middle position of the horizontal bars 113 on both sides, and the elastic member 15 fills the outer extension block 141 around, so that the outer extension block 141 is located in the middle position of the installation cavity 114, and the outer extension block 141 is surrounded by elastic members 15 to achieve a buffering and vibration reduction effect.

[0039] like Figure 7As shown, an exhaust port 116 is provided on the outer side of the transverse strip 113 , and the exhaust port 116 is connected to the installation cavity 114 . When the elastic member 15 is filled, the exhaust port 116 is used to discharge the gas in the installation cavity 114 to avoid the generation of gaps.

[0040] like Fig. 9 and Fig.10 As shown, Fig. 9 It is the overlap socket state. Fig.10 The inner buckle part 111 and the inner rotor core 14 are nearly vertical, so that the short axis of the inner buckle part 111 is relatively fitted with the long axis of the inner rotor core 14, so that the axes of the two coincide, and they are in a symmetrical state during rotation, so as to achieve stable rotation. The inner diameter of the inner buckle part 111 and the outer diameter of the inner rotor core 14 are both ellipses of the same shape but different sizes. The gap between the inner buckle part 111 and the inner rotor core 14 is a connecting gap 16, and the connecting gap 16 is filled with an elastic member 15;

[0041] The outer wall of the major axis of the elliptical inner rotor core 14 is fitted with the inner wall of the minor axis of the elliptical inner buckling portion 111 to control stable rotation.

[0042] The elastic member 15 is made of rubber material to achieve a vibration reduction effect.

[0043] Working principle of the present invention: the rotor mechanism 1 is used to drive the rotating shaft 2 to rotate, wherein the elastic member 15 located between the inner rotor core 14 and the inner buckle 111 is used for vibration reduction, and during the rotation of the rotor mechanism 1, the vibration energy generated by the operation of the motor between the inner and outer rotor cores can be effectively absorbed and dispersed, thereby reducing the overall vibration level of the motor. This is of great significance for improving the operating stability of the motor and extending its service life.

[0044] When subjected to axial force, the outer extension block 141 is clamped into the installation cavity 114 and is surrounded by the elastic member 15. Even if subjected to axial force, the axial tension on the elastic member 15 is reduced, thereby increasing the service life of the elastic member 15 and thereby increasing the service life of the motor.

[0045] When fixing the inner rotor core 14 to the outer inner snap-fitting part 111, the inner rotor core 14 is sleeved onto the inner snap-fitting part 111, and the inner rotor core 14 is sleeved on other shafts, and the inner rotor core 14 is rotated. The elliptical inner rotor core 14 can position the elliptical inner snap-fitting part 111, so that the axes of the two coincide, the end shaft long axes of the inner snap-fitting part 111 and the inner rotor core 14 coincide, the inner wall of the inner snap-fitting part 111 and the outer wall of the inner rotor core 14 fit together, and then the elastic member 15 is filled.

[0046] The outer extension block 141 can be rotated from the installation cavity 115 into the installation cavity 114. Under the filling effect of the elastic member 15, the inner buckling portion 111 and the inner rotor core 14 are in contact with the elastic member 15 with the largest area. The elastic member 15 can be firmly adhered to avoid separation. In addition, since the outer extension block 141 is blocked by the transverse bars 113 and the longitudinal bars 112 on all sides and is covered by the elastic member 15, a good vibration reduction effect is achieved and excessive shear force is avoided.

[0047] After the inner snap-fitting portion 111 and the inner rotor core 14 are sleeved together, during the process of filling the elastic member 15, the elastic member 15 is filled from the connection gap 16 and extends into the installation cavity 114 and the installation cavity 115. When there is gas in the installation cavity 114, the gas can be discharged from the exhaust port 116, so that gaps are avoided in the elastic member 15, and weight deviation is avoided, thereby ensuring the stability of the rotor rotation.

[0048] In the waste rotor, the elastic member 15 is often aged, corroded and invalid, and the elastic member 15 needs to be replaced. During disassembly, the inner rotor core 14 is rotated, and the inner buckle 111 on the outside remains stationary. The elastic member 15 in the installation cavity 115 is removed, and the local elastic member 15 in the connection gap 16 is cleaned. The elliptical shape can make the local connection gap 16 larger, which is convenient for filling the elastic member 15 and also convenient for taking out the elastic member 15. Then, the inner rotor core 14 is rotated, which can push the elastic member 15 in the installation cavity 114 to move into the installation cavity 115. At the same time, the connection gap 16 changes, producing a twisting effect, which is convenient for subsequent separation and replacement.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable vibration-damping rotor, comprising a rotor mechanism (1) and a rotating shaft (2) arranged coaxially, wherein the rotating shaft (2) is installed in the rotor mechanism (1), and characterized in that: The rotor mechanism (1) comprises an injection molded part (11), a plurality of groups of outer rotor cores (12), a plurality of groups of permanent magnets (13), an inner rotor core (14) and an elastic member (15); the plurality of groups of outer rotor cores (12) and the plurality of groups of permanent magnets (13) are spaced apart and arranged circumferentially; the inner rotor core (14) is sleeved between the plurality of groups of outer rotor cores (12) and the plurality of groups of permanent magnets (13) distributed circumferentially; the plurality of groups of outer rotor cores (12) and the plurality of groups of permanent magnets (13) are embedded in the injection molded part (11); and the elastic member (15) is installed between the inner rotor core (14) and the injection molded part (11) for vibration reduction; An inner buckling portion (111) is provided on the inner wall of the injection molded part (11), the inner buckling portion (111) being used to buckle with the inner rotor core (14), and the elastic part (15) between the inner buckling portion (111) and the inner rotor core (14) is bonded on both inner and outer sides; The inner buckling portion (111) comprises a plurality of longitudinal strips (112) extending along the axis of the injection molded part (11); one side of the longitudinal strips (112) is integrally provided with arranged transverse strips (113); the transverse strips (113) are perpendicular to the axis of the injection molded part (11); an installation cavity (114) for clamping the inner rotor core (14) is provided between two adjacent transverse strips (113); an installation cavity (115) extending along the axis of the injection molded part (11) is provided between the arranged transverse strips (113) and the adjacent longitudinal strips (112); the installation cavity (115) is communicated with the installation cavity (114); and the longitudinal strips (112) and the transverse strips (113) are integrally formed on the inner side of the injection molded part (11); Outer extension blocks (141) are integrally formed and arranged on the outer wall of the inner rotor core (14); the inner rotor core (14) is sleeved onto the inner buckling portion (111); the outer extension blocks (141) move from the mounting cavity (115) into the mounting cavity (114); the elastic member (15) is filled into the mounting cavity (114) and the mounting cavity (115) to connect the inner rotor core (14) and the inner buckling portion (111).

2. The adjustable damping rotor according to claim 1, characterized in that: Both sides of the outer rotor core (12) are inclined, the permanent magnet (13) is fitted to the outer rotor core (12), and the inner and outer edges of the outer rotor core (12) are also protruding, so as to buckle the permanent magnet (13).

3. The adjustable damping rotor according to claim 1, characterized in that: Elastic support bodies (142) are fixed on both sides of the outer extension block (141), and the support bodies (142) on both sides are used to contact the transverse strips (113) on both sides, so that the outer extension block (141) is located in the middle of the transverse strips (113) on both sides, and the elastic member (15) fills the outer extension block (141) around.

4. The adjustable damping rotor according to claim 1, characterized in that: An exhaust port (116) is provided on the outer side of the transverse strip (113) and is arranged to penetrate therethrough. The exhaust port (116) is in communication with the installation cavity (114) and is used to exhaust the gas in the installation cavity (114) when the elastic member (15) is filled.

5. The adjustable vibration damping rotor according to claim 1, characterized in that: The inner diameter of the inner buckling portion (111) and the outer diameter of the inner rotor core (14) are both ellipses of the same shape but different sizes; the gap between the inner buckling portion (111) and the inner rotor core (14) is a connection gap (16); and the connection gap (16) is filled with an elastic member (15); The outer wall of the major axis of the elliptical inner rotor core (14) is fitted with the inner wall of the minor axis of the elliptical inner buckling portion (111).

6. The adjustable damping rotor according to claim 1, characterized in that: The elastic member (15) is made of rubber material.

Images