Dynamic pressure slip sheet bearing rotor and motor thereof

Abstract

The invention relates to the technical field of motors, in particular to a dynamic pressure slip sheet bearing rotor and a motor thereof.The dynamic pressure slip sheet bearing rotor comprises a rotor magnet, a rotor body, a rotor shaft and a bearing body, the bearing body is located on the outer side of the rotor body, the rotor magnet is located on one side of the rotor body, and the rotor shaft is located in the center of the rotor body; the bearing body comprises a fixed shell and a slip sheet body, the slip sheet body is installed on the inner side of the fixed shell and makes contact with the rotor body, an adjusting mechanism is installed on the fixed shell, a driving block is installed on the fixed shell, a through hole is formed in the driving block, an oil channel is formed in the fixed shell, and the oil channel is communicated with the oil channel. By utilizing the dual effects of centrifugal force and dynamic pressure, the rotor shaft can be well supported when the speed is low, the thickness of an oil film can be gradually increased when the speed of the rotor is increased, the integrity and heat transfer performance of the oil film are further improved, and the abrasion of the rotor body is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of motors, in particular to a dynamic pressure vane bearing rotor and a motor thereof. Background Art

[0002] The hydrodynamic vane bearing is a type of self-lubricating bearing that uses lubricating oil to form a thin film of liquid inside the bearing to reduce friction and wear. It consists of a vane and a fixed bearing housing and is widely used in motors and other rotating machinery. The working principle of the hydrodynamic vane bearing is based on the "dynamic pressure" effect, that is, when the rotor rotates, the lubricating oil between the vane and the rotor is squeezed, creating a high-pressure oil film. This oil film forms a lubricating layer that allows the rotor to rotate smoothly inside the bearing, reducing direct contact and friction. The bearing is designed so that the lubricating oil is continuously redistributed as the rotor rotates, ensuring continuous lubrication and stability of the bearing.

[0003] During long-term high-load use of large motors, the internal rotor shaft runs at high speed. At this time, the lubricating oil near the rotor shaft will always rotate along the same trajectory and speed as the rotor shaft, thereby forming an oil film. However, the long-term rotation of the rotor shaft will generate heat. At this time, the thick oil film will form a heat barrier, causing the heat at the rotor shaft to continue to rise. When the oil film at the rotor shaft is thinner, the high speed or strong load of the rotor shaft will cause the oil film to rupture, resulting in direct metal contact and damage, so the thickness of the oil film needs to be adaptively adjusted.

[0004] In the prior art, this type of problem is often addressed by reducing the motor speed or introducing more lubricating oil to achieve oil circulation. On the one hand, this ensures that there is sufficient oil inside, and on the other hand, the oil circulation can take away the heat generated by the excessive speed. However, since the position of the vane does not change, the thickness of the oil film will not change with the increase in speed. As a result, it is difficult to ensure that the thickness of the oil film can be increased at a fast speed, thereby avoiding the problem of rotor wear caused by oil film rupture.

[0005] Based on this, in order to solve the problem that it is difficult to ensure that the oil film can take into account both integrity and thermal conductivity when the motor speed is too fast, which in turn causes rotor wear, the present invention designs a dynamic pressure sliding vane bearing rotor and its motor. Summary of the invention

[0006] The present invention provides a hydrodynamic vane bearing rotor and a motor thereof. In order to solve the problem that it is difficult to ensure that the oil film can take into account both integrity and thermal conductivity when the motor speed is too fast, thereby causing rotor wear, the present invention utilizes the dual effects of centrifugal force and dynamic pressure, thereby being able to provide good support for the rotor shaft when the speed is slow, and gradually increasing the thickness of the oil film when the rotor speed is accelerated, thereby improving the integrity and heat transfer performance of the oil film and reducing the wear of the rotor body.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a dynamic pressure vane bearing rotor, comprising a rotor magnet, a rotor body, a rotor shaft and a bearing body, wherein the bearing body is located outside the rotor body, the rotor magnet is located on one side of the rotor body, and the rotor shaft is located at the center of the rotor body. The bearing body comprises a fixed shell and a vane body, the vane body is installed on the inner side of the fixed shell, and the vane body is in contact with the rotor body. An adjusting mechanism is installed on the fixed shell, and a driving block is installed on the fixed shell. A through hole is provided at the driving block, and an oil channel is provided in the fixed shell. When the rotor shaft rotates, oil inside the fixed shell overflows from the through hole and rotates with the rotor shaft. Under the action of the driving block, the adjusting mechanism separates the fitted vane body from the rotor body, and the distance between the vane body and the rotor body is proportional to the rotation speed of the rotor body. On the one hand, it is convenient for lubrication of the rotor body and the vane body, and on the other hand, it is also used to form an oil film when the rotor body rotates, thereby reducing the friction between the vane body and the rotor body and reducing the wear of the rotor.

[0009] Preferably, a plurality of through holes are provided, and the diameters of the plurality of through holes gradually increase along the rotation direction of the driving block, thereby increasing the distance between the rotor body and the vane body and reducing the friction of the rotor body.

[0010] Preferably, the adjustment mechanism includes a slide groove, a push rod, a push rod, a return spring and a torsion spring; the slide groove is opened at a position of the fixed shell corresponding to the driving block, the push rod is installed on the driving block, the push rod is installed on one side of the driving block, the push rod is initially in contact with the vane body, one end of the return spring is installed in the slide groove, and the other end is connected to the driving block, the torsion spring is installed between the vane body and the fixed shell, and the vane body adjusts the direction of oil entering the rotor body at the through hole along the tangent of the rotor body, which on the one hand avoids wear caused by excessive friction at the rotor body, and on the other hand avoids damage caused by excessive heat at the rotor body.

[0011] Preferably, the vane body is divided into a drainage portion and a supporting portion, the cross-section of the supporting portion is an arc surface, and the two end points of the supporting portion are point a and point b respectively, thereby quickly forming a thinner oil film, which can form lubrication even at a slow speed, reduce the wear of the rotor body, and achieve the effect of cooling and improving lubrication.

[0012] Preferably, when the vane body rotates to the outermost side around the torsion spring, the point a passes over the rotor shaft, and blades are installed on the rotor body at the vane body, so that the oil close to the rotor body can be driven by the blades to rotate synchronously, thereby increasing the speed of oil film formation.

[0013] Preferably, the blade surface on the side opposite to the oil flow direction is the driving surface, the blade side facing away from the driving surface is the gathering surface, and the blade cross-section at the driving surface is conical, which increases the contact area between the blade and the lubricating oil and further improves the oil film forming speed.

[0014] Preferably, an annular groove is formed on the blade, and a convex point is installed on the push rod, and the convex point is engaged with the annular groove, thereby improving the convenience of movement of the push rod.

[0015] Preferably, a chamber is provided in the push rod, and oil is stored in the chamber. A ring sheet is installed on the top of the push rod, which improves the cooling efficiency of the lubricating oil and can spontaneously replenish the lubricating oil when the rotation speed is too fast.

[0016] Preferably, a shielding plate is installed at one end of the ring plate close to the sliding plate body, and the shielding plate is concave, which improves the rotation priority of the push rod and reduces friction.

[0017] A motor comprises any one of the above-mentioned hydrodynamic vane bearing rotors, and also comprises a motor housing, a stator body, a stator winding and a fixed disk, wherein the stator body is installed in the motor housing, the stator winding is installed on the side of the stator body close to the rotor body, the stator winding is located at the rotor magnet, the fixed disk is installed in the opening section of the motor housing, the rotor shaft passes through the fixed disk, and the fixed disk and the rotor shaft are heat-insulated and sealed.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention proposes a dynamic pressure vane bearing rotor, in which the vane body is initially in contact with the rotor body. Under the action of the adjusting mechanism, the vane body is initially in a fixed state, and can be pressed against the rotor body, so that the rotor body can be fixed in the center position, thereby improving the stability of the rotor body; ensuring that the amount of the oil inlet is greater than or equal to the amount of the oil outlet, thereby achieving that the interior is always filled with lubricating oil, which is convenient for lubrication of the rotor body and the vane body on the one hand, and is also used to form an oil film when the rotor body rotates on the other hand, thereby reducing the friction between the vane body and the rotor body, reducing the wear of the rotor, and extending the service life of the rotor.

[0020] 2. The present invention proposes a dynamic pressure vane bearing rotor, which changes the path of the oil film through a push rod. After the oil film is formed, the rotor shaft is still rotating, which will drive the oil at the push rod to continue to form an oil film, and then drive the push rod to rotate in the direction of rotation of the rotor shaft, so that the drive block rotates in the same direction. The drive block gradually opens a plurality of through holes, which increases the oil volume and improves the heat discharge, thereby achieving double protection for the rotor body. On the one hand, it avoids wear caused by excessive friction at the rotor body, and on the other hand, it avoids damage caused by excessive heat at the rotor body.

[0021] 3. The present invention proposes a dynamic pressure vane bearing rotor. During the rotation of the support part, the vane body gradually moves away from the rotor shaft, but the distance between the two gradually increases with the rotation speed. At this time, point a just passes over the rotor shaft and then forms a tile shape, so that the oil can gather at the front end of the support part, and the drainage part just covers the path of the through hole directly reaching the center of the rotor shaft, thereby changing the path of the oil reaching the center of the rotor shaft, and then forming the lubricating oil flowing along the surface of the drainage part until it reaches the back of the support part, and the back of the support part just intersects with the edge of the circle where the oil film is located, and then the oil flowing out from the through hole just gradually accumulates on the outside of the formed oil film, thereby forming a new oil film, thereby improving the lubrication effect of the rotor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the specific implementation mode or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are one implementation mode of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the motor structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the rotor body and the bearing body structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure inside the fixed housing of the present invention;

[0026] Figure 4 is a schematic diagram of the adjustment mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the blade of the present invention;

[0028] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0029] Figure 7 is a partial cross-sectional view of the push rod of the present invention;

[0030] Figure 8 It is a schematic diagram of the ring piece of the present invention;

[0031] Fig. 9 This is a state diagram of the rotor body of the present invention when the rotation speed is fast.

[0032] In the figure: 1. rotor magnet; 2. rotor body; 21. blade; 211. driving surface; 212. gathering surface; 213. annular groove; 3. rotor shaft; 4. bearing body; 41. fixed shell; 42. vane body; 421. drainage part; 422. support part; 4221. point a; 4222. point b; 4223. convex point; 5. adjustment mechanism; 51. slide groove; 52. push rod; 521. chamber; 522. annular sheet; 523. baffle; 53. push rod; 54. reset spring; 55. torsion spring; 6. drive block; 7. through hole; 8. motor shell; 9. stator body; 10. stator winding; 11. fixed disk. DETAILED DESCRIPTION

[0033] In order to better understand the above solution, the above technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 2-3 As shown, a dynamic pressure vane bearing rotor provided by the present invention comprises a rotor magnet 1, a rotor body 2, a rotor shaft 3 and a bearing body 4, wherein the bearing body 4 is located outside the rotor body 2, the rotor magnet 1 is located on one side of the rotor body 2, the rotor shaft 3 is located at the center of the rotor body 2, the bearing body 4 comprises a fixed shell 41 and a vane body 42, the fixed shell 41 is installed inside the motor shell 8, and they can fit each other, a vane body 42 is installed inside the fixed shell 41, the vane body 42 and the fixed shell 41 are hinged, a notch is provided on the fixed shell 41 for placing the end of the vane body 42, one end of the vane body 42 is installed in the notch of the fixed shell 41 through a hinged rod, and the vane shell and the fixed shell 41 are connected through an adjustment mechanism 5;

[0035] The vane body 42 is in contact with the rotor body 2. The vane body 42 is initially in a fixed state under the action of the adjusting mechanism 5, and can then press against the rotor body 2, so that the rotor body 2 can be fixed in the center position, thereby improving the stability of the rotor body 2; the adjusting mechanism 5 is installed on the fixed shell 41, and the driving block 6 is installed on the fixed shell 41. A through hole 7 is opened at the driving block 6. The driving block 6 initially covers part of the through hole 7. Only half of the small hole is left for a single driving block 6 to circulate the initial oil path inside. There is no specific restriction on the oil inlet and the oil outlet. The specific setting can be arranged according to the actual situation. For example, four of the driving blocks 6 are oil inlets, and the other two driving blocks 6 are oil outlets, etc., to ensure the oil inlet. The amount of the oil port is greater than or equal to the amount of the oil outlet, thereby ensuring that the interior is always filled with lubricating oil. On the one hand, it is convenient for lubrication of the rotor body 2 and the vane body 42. On the other hand, it is also used to form an oil film when the rotor body 2 rotates, reducing the friction between the vane body 42 and the rotor body 2, reducing the wear of the rotor, and extending the service life of the rotor; an oil channel is provided in the fixed shell 41, and the oil channel is a prior art. It only needs to ensure that the external oil can flow in through the through hole 7 and then flow out through the through hole 7 to realize the circulation of the lubricating oil; when the rotor shaft 3 rotates, the oil inside the fixed shell 41 overflows from the through hole 7 and rotates with the rotor shaft 3, and the adjusting mechanism 5 separates the fitted vane body 42 from the rotor body 2 under the action of the driving block 6.

[0036] There are multiple through holes 7, and the diameters of the multiple through holes 7 gradually increase along the rotation direction of the driving block 6; a single driving block 6 is provided with multiple through holes 7 at the bottom, and when the driving block 6 rotates gradually, the large through holes 7 gradually open, and then the oil intake gradually increases, and then the oil amount between the rotor body 2 and the fixed shell 41 is gradually increased, and the small through holes 7 in the figure are gradually closed, and then the oil outlet path is changed to avoid oil blockage. Under the rotation of the rotor shaft 3, the thickness of the oil film gradually increases, and the circulation speed of the lubricating oil is also increased, thereby increasing the distance between the rotor body 2 and the vane body 42, reducing the friction of the rotor body 2, avoiding the rotor body 2 from being worn by the vane body 42, and extending the service life of the rotor body 2.

[0037] like Figure 4 As shown, the adjustment mechanism 5 includes a slide groove 51, a push rod 52, a push rod 53, a return spring 54 and a torsion spring 55; the slide groove 51 is opened at a position of the fixed housing 41 corresponding to the driving block 6, the push rod 52 is installed on the driving block 6, the push rod 53 is installed on one side of the driving block 6, the push rod 53 is initially in contact with the vane body 42, one end of the return spring 54 is installed in the slide groove 51, and the other end is connected to the driving block 6, the torsion spring 55 is installed between the vane body 42 and the fixed housing 41, and the vane body 42 guides the direction of the oil at the through hole 7 to enter the inside of the rotor body 2 along the tangent of the rotor body 2;

[0038] Six slide grooves 51 are provided on the fixed shell 41 (corresponding to the positions of the drive blocks 6, there are six drive blocks 6 in the figure, and the specific number can be set according to actual needs), and a return spring 54 is installed in the slide groove 51. The return spring 54 is used to connect the side wall of the slide groove 51 and the drive block 6 to ensure that the drive block 6 can be restored to the initial position without being affected by external force. The push rod 52 is installed on the side of the drive block 6 facing the rotor body 2. The push rod 52 is close to the rotor body 2, so that the push rod 52 can play an auxiliary role when the rotor body 2 is eccentric. At the same time, the push rod 52 is also used to change the path of the oil film. After the oil film is formed, the rotor shaft 3 is still rotating, which will drive the oil at the push rod 52 to continue to form an oil film, and then drive the push rod 52 to rotate in the direction of rotation of the rotor shaft 3, so as to Figure 3 Taking the direction from right to left as an example, the rotor shaft 3 rotates counterclockwise at this time, which will drive the push rod 52 to rotate counterclockwise, and then drive the drive block 6 to rotate counterclockwise, gradually opening multiple through holes 7, increasing the oil volume while improving the heat discharge, thereby achieving double protection for the rotor body 2, on the one hand to avoid excessive friction and wear at the rotor body 2, and on the other hand to avoid excessive heat at the rotor body 2 causing damage.

[0039] Overheating at the rotor will accelerate the aging of the lubricating oil and reduce its lubricating effect. Overheating will also increase friction and wear at the rotor, thereby affecting the service life of the rotor.

[0040] The push rod 53 is used to press the vane body 42 tightly. When the speed is not fast, the push rod 53 and the vane body 42 are not affected by the dynamic pressure of the oil film. If the push rod 52 does not move, the push rod 53 is always pressed tightly, and the vane body 42 will not be deflected under the action of the torsion spring 55. The push rod 53 can also limit the vane body 42 when the speed is accelerated, so as to avoid the vane body 42 from turning over too much when the speed is suddenly increased, thereby causing a hard collision. At the same time, it can also restrain the gradual formation of the oil film. The gradual rotation of the vane body 42 allows the internal oil to form an oil film layer by layer from the center to the edge, thereby avoiding the oil film from forming too quickly to cause flow loss, and heat will suddenly accumulate in the local area. When the speed is reduced, it will lead to insufficient lubrication at the rotor, causing wear of the rotor body 2.

[0041] like Figure 4 As shown, the slide body 42 is divided into a drainage portion 421 and a support portion 422. The cross section of the support portion 422 is an arc surface, and the two end points of the support portion 422 are point a 4221 and point b 4222 respectively.

[0042] The drainage portion 421 is used to guide the oil flowing into the through hole 7 to gradually enter the rotor body 2. Point a 4221 is the tangent point between the support portion 422 and the rotor body 2. During the rotation of the support portion 422, the vane body 42 gradually moves away from the rotor shaft 3, but the distance between the two gradually increases with the rotation speed. At this time, point a 4221 just passes over the rotor shaft 3, and then forms a tile shape, so that the oil can gather at the front end of the support portion 422, and the drainage portion 421 just covers the path from the through hole 7 to the center of the rotor shaft 3, thereby changing the path of the oil to the center of the rotor shaft 3, thereby forming a lubricating oil flowing along the rotor shaft 3. The surface of the drainage portion 421 flows until it reaches the back of the support portion 422, and the back of the support portion 422 just intersects with the circular edge where the oil film is located, and then the oil flowing out from the through hole 7 just gradually accumulates on the outside of the formed oil film, and then forms a new oil film, and this oil film is different from the internal oil film. The internal oil film will not be affected by the vane body 42 and change, so it is a "fixed oil film", and the outside of the fixed oil film can be squeezed by the vane body 42 or the circulation of oil to produce a direction difference (it will not be fixed relative to the rotor shaft 3), so it can achieve the effect of cooling (taking away heat) and improving lubrication.

[0043] like Figure 4-6 As shown, when the vane body 42 rotates to the outermost side around the torsion spring 55, the point a 4221 passes over the rotor shaft 3, and the rotor body 2 located at the vane body 42 is equipped with a blade 21;

[0044] The blades 21 are used to guide the fluid to flow toward the push rod 52, and at the same time, the internal fluid can form longitudinal movement in a spiral manner, so that the oil close to the rotor body 2 can be driven by the blades 21 to rotate synchronously, thereby quickly forming a thinner oil film, which can form lubrication even at a slow speed and reduce the wear of the rotor body 2. Subsequently, an oil film will be formed on the periphery of the blades 21. The lubricating oil has adhesion, and the oil on the periphery of the blades 21 can rotate synchronously with the oil of the blades 21 that is stationary relative to the rotor body 2, thereby achieving a thick oil film.

[0045] like Figure 6 As shown, the surface of the blade 21 on the opposite side to the oil flow direction is a driving surface 211, and the side of the blade 21 facing away from the driving surface 211 is a gathering surface 212. The cross-section of the blade 21 at the driving surface 211 is conical. The gathering surface 212 can increase the contact area between the blade 21 and the oil, and then during the rotation of the rotor body 2, the gathering surface 212 can push the oil around the blade 21 to rotate in the same direction, thereby increasing the speed of oil film formation, and when the rotation speed decreases, the taper of the driving surface 211 can enable the push rod 52 to smoothly return to the initial position, thereby realizing recycling.

[0046] The blade 21 is provided with an annular groove 213, and the push rod 52 is provided with a convex point 4223, and the convex point 4223 is engaged with the annular groove 213;

[0047] The annular groove 213 can cooperate with the protrusion 4223, thereby constraining the moving direction of the push rod 52, and at the same time reducing the resistance of the lubricating oil to the push rod 52, so that the push rod 52 can move with the slide body 42 first (under the action of the push rod 53, the push rod 52 must move with the slide body 42 first, which means that even if the push rod 53 is removed, the push rod 52 is allowed to rotate before the slide body 42 as much as possible), thereby reducing the rigid reverse force and improving the smoothness of the movement.

[0048] like Figure 7 As shown, a chamber 521 is provided in the push rod 52, oil is stored in the chamber 521, and a ring piece 522 is installed on the top of the push rod 52;

[0049] The push rod 52 is made of rubber, that is, the push rod 52 can be squeezed by the oil film, and then the oil flows out from the hole (not shown in the hole diagram), so as to increase the amount of oil increase and increase the movement speed of the oil, and simultaneously improve the cooling effect. When the internal speed is too high, the heat will be preferentially conducted to the oil in the push rod 52. After the oil is squeezed, it can absorb the oil in the rear circulation when the speed is reduced, and new cooling oil is added, thereby improving the lubrication effect.

[0050] like Figure 8-9 As shown, a shielding plate 523 is installed at one end of the ring plate 522 close to the slide body 42, and the shielding plate 523 is concave;

[0051] The annular plate 522 is used to limit the position of the oil film. The oil film on the side of the annular plate 522 close to the center will not be affected by the annular plate 522, and a fixed oil film will be formed. The oil at and behind the annular plate 522 will push the baffle plate 523, and then drive the drive block 6, so that the push rod 52 moves preferentially compared to the sliding plate body 42, thereby increasing the opening speed of the through hole 7, increasing the circulation and circulation speed of the lubricating oil, and thus reducing the wear of the rotor.

[0052] like Figure 1 As shown, a motor includes any one of the above-mentioned hydrodynamic vane bearing rotors, and also includes a motor housing 8, a stator body 9, a stator winding 10 and a fixed disk 11. The stator body 9 is installed in the motor housing 8, the stator winding 10 is installed on the side of the stator body 9 close to the rotor body 2, the stator winding 10 is located at the rotor magnet 1, the fixed disk 11 is installed in the opening section of the motor housing 8, the rotor shaft 3 passes through the fixed disk 11, and the fixed disk 11 and the rotor shaft 3 are heat-insulated and sealed.

[0053] During the use of the motor, the power switch is turned on, so that the current circulates in the stator body 9, and the magnetic field lines generated by the rotor magnet 1 in the motor housing 8 are cut by the stator winding 10 coils, and then the rotor magnet 1 starts to rotate, and the synchronous rotor body 2 and the rotor shaft 3 start to rotate. At this time, the rotor body 2 rotates relative to the motor housing 8 through the bearing body 4. The bearing body 4 includes a fixed housing 41 and a vane body 42. When the rotor body 2 does not rotate, the vane body 42 supports and limits the rotor body 2, and the oil for lubrication flows out of the through hole 7. When the rotor shaft 3 rotates, the rotor body 2 drives the surrounding lubricating oil to rotate to form an oil film. At this time, the adjustment mechanism 5 gradually moves the vane body 42 away from the rotor body 2 under the action of the driving block 6;

[0054] When the motor speed increases, the rotor shaft 3 drives the rotor body 2 to rotate, and the blades 21 on the rotor body 2 drive the surrounding lubricating oil to quickly form an oil film, and synchronously drive the shielding plate 523 to move, and the shielding plate 523 drives the ring plate 522 and the push rod 52 to move, and the push rod 52 drives the driving block 6 to slide in the slide groove 51 on the fixed housing 41, so that the push rod 53 is away from the vane body 42, and the vane body 42 is released, and then folded under the action of the oil film and the torsion spring 55, and then away from the rotor body 2, so that a sufficient oil film thickness is left;

[0055] As the drive block 6 moves, the through hole 7 is gradually enlarged, and the amount of oil entering is increased, and the circulation speed of the lubricating oil is accelerated. The drainage part 421 of the vane body 42 guides this part of the oil directly to the outer ring of the oil film, thereby forming a new circulating oil film, thereby improving the lubrication effect and taking away heat. As the thickness of the oil film gradually increases, the rotating rod is squeezed, and the lubricating oil in the chamber 521 is squeezed out, increasing the amount of oil replenishment, and the oil can fill the interior when the speed is too fast, and accelerate the circulation of the lubricating oil. When the speed of the rotor body 2 decreases, the push rod 52 is restored, and the newly circulated oil is sucked into the chamber 521 and returned to its original state. At this time, the oil temperature is lower than the oil temperature at the fixed oil film, and the subsequent rotor body 2 can be accelerated to achieve secondary cooling. At the same time, under the action of the reset spring 54, the drive block 6 is reset, and the push rod 52, the push rod 53, etc. are reset synchronously.

[0056] The basic principles and beneficial effects of the present invention are shown and described above. At the same time, the present invention is not limited to the above embodiments. Without departing from the effects and scope of the present invention, the present invention may have various changes and improvements. These changes and improvements all fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dynamic pressure vane bearing rotor, characterized in that: The invention comprises a rotor magnet (1), a rotor body (2), a rotor shaft (3) and a bearing body (4), wherein the bearing body (4) is located outside the rotor body (2), the rotor magnet (1) is located on one side of the rotor body (2), the rotor shaft (3) is located at the center of the rotor body (2), the bearing body (4) comprises a fixed shell (41) and a vane body (42), the vane body (42) is installed inside the fixed shell (41), the vane body (42) is in contact with the rotor body (2), and an adjusting mechanism is installed on the fixed shell (41). The fixed housing (41) has a drive block (6) mounted thereon, a through hole (7) being formed at the drive block (6), and an oil passage being formed in the fixed housing (41). When the rotor shaft (3) rotates, the oil in the fixed housing (41) overflows from the through hole (7) and rotates along with the rotor body (2). The adjusting mechanism (5) separates the sliding vane body (42) and the rotor body (2) in contact therewith under the action of the drive block (6), and the distance between the sliding vane body (42) and the rotor body (2) is proportional to the rotation speed of the rotor body (2).

2. The dynamic pressure vane bearing rotor according to claim 1, characterized in that: A plurality of through holes (7) are provided, and the diameters of the plurality of through holes (7) gradually increase along the rotation direction of the driving block (6).

3. The dynamic pressure vane bearing rotor according to claim 2, characterized in that: The adjusting mechanism (5) comprises a slide groove (51), a push rod (52), a push rod (53), a return spring (54) and a torsion spring (55); the slide groove (51) is provided at a position of the fixed housing (41) corresponding to the driving block (6); the push rod (52) is mounted on the driving block (6); the push rod (53) is mounted on one side of the driving block (6); the push rod (53) is initially in contact with the vane body (42); one end of the return spring (54) is mounted in the slide groove (51) and the other end is connected to the driving block (6); the torsion spring (55) is mounted between the vane body (42) and the fixed housing (41); the vane body (42) guides the oil at the through hole (7) along the tangent of the rotor body (2) to enter the direction of the rotor body (2).

4. The dynamic pressure vane bearing rotor according to claim 3, characterized in that: The slide body (42) is divided into a drainage portion (421) and a support portion (422). The cross section of the support portion (422) is an arc surface. The two end points of the support portion (422) are point a (4221) and point b (4222).

5. The dynamic pressure vane bearing rotor according to claim 4, characterized in that: When the vane body (42) rotates to the outermost side around the torsion spring (55), the point a (4221) passes over the rotor shaft (3), and a blade (21) is installed on the rotor body (2) located at the vane body (42).

6. The dynamic pressure vane bearing rotor according to claim 5, characterized in that: The surface of the blade (21) on the side opposite to the oil flow direction is a driving surface (211), the side of the blade (21) away from the driving surface (211) is a gathering surface (212), and the cross section of the blade (21) at the driving surface (211) is conical.

7. The dynamic pressure vane bearing rotor according to claim 6, characterized in that: The blade (21) is provided with an annular groove (213), and the push rod (52) is provided with a convex point (4223), and the convex point (4223) is embedded in the annular groove (213).

8. The dynamic pressure vane bearing rotor according to claim 7, characterized in that: The push rod (52) is provided with a chamber (521), in which oil is stored, and a ring sheet (522) is installed on the top of the push rod (52).

9. The dynamic pressure vane bearing rotor according to claim 8, characterized in that: A shielding plate (523) is installed at one end of the ring plate (522) close to the sliding plate body (42), and the shielding plate (523) is concave.

10. A motor, comprising the hydrodynamic vane bearing rotor according to any one of claims 1 to 9, characterized in that: The invention also comprises a motor housing (8), a stator body (9), a stator winding (10) and a fixing disk (11), wherein the stator body (9) is installed in the motor housing (8), the stator winding (10) is installed on a side of the stator body (9) close to the rotor body (2), the stator winding (10) is located at the rotor magnet (1), the fixing disk (11) is installed at the opening section of the motor housing (8), the rotor shaft (3) passes through the fixing disk (11), and the fixing disk (11) and the rotor shaft (3) are heat-sealed.

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