An automobile generator rotor structure

Abstract

The utility model discloses an automobile generator rotor structure belongs to automobile generator technical field, including the main shaft support, the middle part fixed rotor support of main shaft support, and the both ends of rotor support are distributed with the axle balance support, the axle balance support includes the axle fixed frame. This rotor structure is clamped with the outer bearing ring in the inner wall both ends of generator shell body, and the center axle fixed frame of every group outer bearing ring is fixed with the both ends of main shaft stem, in the rotor support operation process, can cooperate the fan blade frame synchronous rotation of the rotation of main shaft stem and drive the inclination angle, forms the continuous heat dissipation process of one end air intake one end air outlet, and adopts the fixed mode of outer bearing ring and shell body, and provides the clamping stability through the anti -skid groove structure, can further promote the stability of axle on the basis of bearing head fixed, keeps the support stability and balance precision when high -speed rotation of rotor, reduces the phenomenon such as the damage bearing and stator winding of violent vibration, improves the safe and stable and reduces the failure rate.

Description

Technical Field

[0001] This utility model relates to the field of automotive generator technology, specifically to an automotive generator rotor structure. Background Technology

[0002] The car alternator is the main power source for a car. Its function is to supply power to all electrical equipment and charge the battery while the engine is running normally. Based on the three-phase stator winding of a regular alternator, the number of winding turns is increased and leads are brought out. A three-phase bridge rectifier is added. At low speeds, the original winding and the added winding are connected in series to output power, while at higher speeds, only the original three-phase winding outputs power. Its working principle is based on electromagnetic induction, that is, the rotor winding generates a rotating magnetic field when energized, and the stator winding cuts the magnetic field lines to generate alternating current, which is then converted into direct current output by the rectifier.

[0003] China Patent Network (patent publication number CN215452610U) discloses a dual-blade type automotive generator rotor, including a rotor, with concentric exhaust fans on both the upper and lower sides of the rotor, and second fan blades fixedly connected to both the upper and lower sides of the rotor. A power shaft collar is fixedly connected to the top of the second fan blades, and a plurality of wound magnets are arranged in a ring on the outer surface of the rotor. A limit plate is fixedly connected to the top of each of the plurality of wound magnets.

[0004] The aforementioned generator rotor uses a double-blade structure in conjunction with two sets of interconnected cooling holes around the shaft and rotor to accelerate heat dissipation. However, in actual use, although the rotor has a heat dissipation effect, the second cooling hole is located between the external winding magnets. This leads to some blockage of the second cooling hole after subsequent winding installation, making it difficult to dissipate heat and affecting the overall external heat dissipation effect. At the same time, the rotor's rotational stability relies solely on the rotor shaft and bearings. If the dynamic balance accuracy is insufficient when the rotor rotates at high speed, it will cause severe vibration, damaging the bearings and stator windings, increasing maintenance and safety hazards. Therefore, we propose an automotive generator rotor structure. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] The purpose of this invention is to provide a rotor structure for an automotive generator to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotor structure for an automotive generator, comprising a main shaft frame, a rotor frame fixed in the middle of the main shaft frame, and shaft balance supports distributed at both ends of the rotor frame. The shaft balance supports include a shaft fixing frame, and a fan blade frame is fixed to the outer wall of the shaft fixing frame. An inner bearing ring is fixed to one end of the fan blade frame. Outer bearing rings are distributed around the outer wall of the inner bearing ring. Anti-slip grooves are provided on the outer wall of the outer bearing ring. Ball bearings are embedded in the inner wall of the outer bearing ring. Side sealing rings are engaged on both sides of the gap between the inner bearing ring and the outer bearing ring.

[0008] Furthermore, the anti-slip grooves are distributed in a ring around the outer wall of the outer bearing ring, and the inner bearing ring is rotatably engaged with the outer bearing ring by ball bearings.

[0009] Furthermore, the shaft fixing bracket is fixedly connected to both ends of the main shaft bracket, and the outer walls of the shaft fixing bracket are fixedly connected to the inner wall of the inner bearing ring through the fan blade bracket.

[0010] Furthermore, the fan blade holders are distributed equidistantly in a ring along the outer wall of the shaft fixing frame, and the fan blade holders are inclined at the same angle along the outer wall of the shaft fixing frame.

[0011] Furthermore, the main spindle frame includes a main spindle rod, a rotor frame is fixed in the middle of the main spindle rod, a slip ring is fixed on the outer wall of one end of the main spindle rod, a shaft bolt is fixed at the other end of the main spindle rod, and bearing heads are sleeved on both ends of the main spindle rod. The bearing heads are fixed to both ends of the outer casing, and a stator is fixed on the inner wall of the outer casing. Outer bearing rings are engaged at both ends of the inner wall of the outer casing.

[0012] Furthermore, the rotor frame forms a rotating structure with the outer casing through the bearing heads at both ends of the main shaft, and the outer bearing rings are symmetrically distributed along both ends of the rotor frame.

[0013] Furthermore, the slip ring is sleeved and fixed to one end of the main shaft, and the main shaft is fixed to the center of the outer casing through a bearing head.

[0014] Furthermore, the rotor frame includes a rotor skeleton, with flow holes opened around its perimeter, and an axial balance bracket aligned with the center of the outer wall of the flow holes. A winding assembly is provided on the outer wall of the rotor skeleton, with port frames fixed at both ends of the winding assembly, and a claw pole frame fixed on one side of the port frame.

[0015] Furthermore, the axial balance support is symmetrically distributed at both ends of the rotor frame axis, and the flow holes are circumferentially opened and penetrate the inside of the rotor frame.

[0016] Furthermore, the port frame is fixedly connected to both ends of the rotor frame, and the port frames intersect each other through the claw pole frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are: The rotor structure has outer bearing rings engaged at both ends of the inner wall of the generator housing, and the central shaft fixing frame of each set of outer bearing rings is fixed to both ends of the main shaft. During the operation of the rotor frame, it can work in conjunction with the rotation of the main shaft to drive the tilted fan blade frame to rotate synchronously, forming a continuous heat dissipation process with air intake at one end and air exhaust at the other end. The method of fixing the outer bearing rings to the housing and the anti-slip groove structure to provide engagement stability can further improve the stability of the shaft on the basis of the fixed bearing head, maintain the support stability and balance accuracy of the rotor at high speed, reduce the phenomenon of damage to bearings and stator windings caused by severe vibration, improve safety and stability and reduce failure rate. This rotor structure is fixed to the generator housing by bearing heads at both ends of the main shaft, maintaining its rotation function. With the help of slip rings, it can ensure stable operation of the generator during power supply. The shaft bolt structure fixed at the end of the main shaft can be connected and fixed to the pulley, and can obtain driving force through the transmission with the engine via the pulley. The main shaft itself is fixed to the rotor frame and the shaft balance bracket, providing mounting and structural stability. This rotor structure consists of a rotor frame and winding assemblies around the outer wall. The internal circulation can be maintained through the annular equidistant flow holes inside the rotor frame. Combined with the axial balance brackets at both ends, auxiliary airflow can be maintained during rotation, improving the heat dissipation efficiency inside the rotor frame during the heat dissipation process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the spindle frame of this utility model; Figure 2 This is a side view of the internal structure of the spindle frame of this utility model; Figure 3 This is a three-dimensional structural diagram of the rotor frame of this utility model; Figure 4 This is a three-dimensional structural diagram of the axial balance support of this utility model; Figure 5 This is a partial side view of the axial balance support structure of this utility model; Figure 6 This is a front view structural diagram of the axial balance support of this utility model.

[0019] In the diagram: 1. Main spindle frame; 101. Main spindle rod; 102. Slip ring; 103. Shaft bolt; 104. Bearing head; 105. Housing; 106. Stator; 2. Rotor frame; 201. Rotor skeleton; 202. Flow hole; 203. Winding assembly; 204. Port frame; 205. Claw pole frame; 3. Shaft balance bracket; 301. Shaft fixing frame; 302. Fan blade frame; 303. Inner bearing ring; 304. Outer bearing ring; 305. Anti-slip groove; 306. Ball bearing; 307. Side sealing ring. Detailed Implementation

[0020] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0021] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0022] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies. It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0023] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] This utility model provides, for example Figure 1-6 The illustrated automobile generator rotor structure includes a main shaft frame 1, a rotor frame 2 fixed in the middle of the main shaft frame 1, and shaft balance supports 3 distributed at both ends of the rotor frame 2. The main shaft frame 1 includes a main shaft rod 101, the rotor frame 2 fixed in the middle of the main shaft rod 101, a slip ring 102 fixed on the outer wall of one end of the main shaft rod 101, a shaft bolt 103 fixed at the other end of the main shaft rod 101, and bearing heads 104 sleeved on both ends of the main shaft rod 101. The bearing heads 104 are fixed to both ends of the outer casing 105, and a stator 106 is fixed on the inner wall of the outer casing 105. Outer bearing rings 304 are engaged at both ends of the inner wall of the outer casing 105. To ensure the stability of the main structural load-bearing capacity of this rotor structure during use, such as Figure 1-3 As shown, this rotor structure is fixed to the generator housing 105 by the bearing heads 104 at both ends of the main shaft 101, maintaining its rotation function. With the help of the slip ring 102, it can ensure the stable operation of the generator power supply process. The shaft bolt 103 structure fixed at the end of the main shaft 101 can be connected and fixed to the pulley. It can obtain driving force through the transmission with the engine via the pulley. The main shaft 101 itself is fixed to the rotor frame 2 and the shaft balance bracket 3, providing mounting and structural stability.

[0025] like Figure 2-3 As shown, the rotor frame 2 includes a rotor skeleton 201. The rotor skeleton 201 has flow holes 202 inside its four sides. The outer wall of the flow holes 202 is aligned with the center of the shaft balance bracket 3. The outer wall of the rotor skeleton 201 is provided with a winding group 203. The two ends of the winding group 203 are fixed with port brackets 204. The side of the port bracket 204 is fixed with a claw pole bracket 205. To provide stability to the overall rotor structure, such as Figure 2-3 As shown, this rotor structure consists of a rotor frame 201 and winding groups 203 around the outer wall. The internal circulation is maintained through the annularly spaced flow holes 202 inside the rotor frame 201. With the help of the shaft balance brackets 3 at both ends, auxiliary air circulation can be maintained during the rotation process, improving the heat dissipation efficiency inside the rotor frame 201 during the heat dissipation process. The outer wall of the winding groups 203 is provided with claw pole brackets 205, which can provide external protection and generate magnetic field rectification, thereby providing auxiliary heat dissipation and stabilizing the overall generator.

[0026] like Figure 2-6 As shown, the shaft balance support 3 includes a shaft fixing frame 301, and a fan blade frame 302 is fixed to the outer wall of the shaft fixing frame 301. An inner bearing ring 303 is fixed to one end of the fan blade frame 302. Outer bearing rings 304 are distributed around the outer wall of the inner bearing ring 303. Anti-slip grooves 305 are provided on the outer wall of the outer bearing ring 304. Ball bearings 306 are embedded in the inner wall of the outer bearing ring 304. Side sealing rings 307 are engaged on both sides of the gap between the inner bearing ring 303 and the outer bearing ring 304. Finally, in order to maintain the stability and operational balance of the overall generator rotor structure, such as Figure 2-6 As shown, this rotor structure has outer bearing rings 304 engaged at both ends of the inner wall of the generator housing 105. The central shaft fixing frame 301 of each set of outer bearing rings 304 is fixed to both ends of the main shaft 101. During the operation of the rotor frame 2, it can rotate synchronously with the rotation of the main shaft 101 to drive the inclined fan blade frame 302 to rotate, forming a continuous heat dissipation process with air entering at one end and exiting at the other. The method of fixing the outer bearing rings 304 to the housing 105 and providing engagement stability through the anti-slip groove 305 structure can further improve the stability of the shaft on the basis of fixing the bearing head 104, maintain the support stability and balance accuracy of the rotor when rotating at high speed, reduce the phenomenon of damage to the bearings and stator windings due to severe vibration, improve safety and stability and reduce the failure rate.

[0027] In summary, when using this rotor structure, the pulley is first screwed tightly to one end of the shaft bolt 103. The engine drives the pulley to rotate via the transmission belt, and the rotating pulley drives the main shaft 101 to rotate inside the outer casing 105. During operation, the main shaft 101, the shaft fixing brackets 301 at both ends, and the fan blade bracket 302 rotate synchronously. The wind force generated by the rotation of the fan blade bracket 302 at an inclined angle blows external air into the rotor frame 201. The air is blown in through the rotor frame 201 and the winding assembly 203, and is cooled by the through-hole 202. The fan blade bracket 302 at the other end blows the hot air out, forming a circulation process to maintain continuous heat dissipation and power generation.

[0028] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A rotor structure for an automotive generator, comprising a main shaft bracket (1), characterized in that, The main shaft frame (1) is fixed with a rotor frame (2) in the middle, and the rotor frame (2) is provided with shaft balance brackets (3) at both ends. The shaft balance brackets (3) include a shaft fixing frame (301), and a fan blade frame (302) is fixed on the outer wall of the shaft fixing frame (301). An inner bearing ring (303) is fixed at one end of the fan blade frame (302). An outer bearing ring (304) is distributed around the outer wall of the inner bearing ring (303). An anti-slip groove (305) is provided on the outer wall of the outer bearing ring (304). A ball bearing (306) is embedded in the inner wall of the outer bearing ring (304). A side sealing ring (307) is engaged on both sides of the gap between the inner bearing ring (303) and the outer bearing ring (304).

2. An automotive generator rotor structure according to claim 1, characterized by The anti-slip groove (305) is distributed in a ring around the outer wall of the outer bearing ring (304), and the inner bearing ring (303) is rotated and engaged with the outer bearing ring (304) through balls (306).

3. The automotive generator rotor structure of claim 1, wherein The shaft fixing bracket (301) is fixedly connected to both ends of the main shaft bracket (1), and the outer walls of the shaft fixing bracket (301) are fixedly connected to the inner wall of the inner bearing ring (303) through the fan blade bracket (302).

4. The automotive generator rotor structure of claim 1, wherein The fan blade frame (302) is distributed equidistantly in a ring along the outer wall of the shaft fixing frame (301), and the fan blade frame (302) is inclined at the same angle along the outer wall of the shaft fixing frame (301).

5. The rotor structure of an automotive generator according to claim 1, characterized in that, The main spindle frame (1) includes a main spindle (101), a rotor frame (2) is fixed in the middle of the main spindle (101), a collector ring (102) is fixed on the outer wall of one end of the main spindle (101), a shaft bolt (103) is fixed at the other end of the main spindle (101), and bearing heads (104) are sleeved on both ends of the main spindle (101). The bearing heads (104) are fixed to both ends of the outer shell (105), and a stator (106) is fixed on the inner wall of the outer shell (105). An outer bearing ring (304) is engaged at both ends of the inner wall of the outer shell (105).

6. An automotive generator rotor structure according to claim 5, wherein The rotor frame (2) forms a rotating structure with the outer shell (105) through the bearing heads (104) at both ends of the main shaft (101), and the outer bearing rings (304) are symmetrically distributed along both ends of the rotor frame (2).

7. A rotor structure for an automotive alternator as defined in claim 5 wherein, The current collector ring (102) is sleeved and fixed to one end of the main shaft (101), and the main shaft (101) is fixed to the center of the outer shell (105) through the bearing head (104).

8. The automotive generator rotor structure of claim 1, wherein The rotor frame (2) includes a rotor skeleton (201). The rotor skeleton (201) has flow holes (202) inside its four sides. The outer wall of the flow holes (202) is aligned with the center of the shaft balance bracket (3). The outer wall of the rotor skeleton (201) is provided with a winding group (203). The two ends of the winding group (203) are fixed with port frames (204). A claw pole frame (205) is fixed on one side of the port frame (204).

9. An automotive generator rotor structure according to claim 8, wherein The axial balance support (3) is symmetrically distributed at both ends of the rotor frame (201) axis, and the flow hole (202) is opened and penetrates around the inside of the rotor frame (201).

10. The automotive generator rotor structure of claim 8, wherein The port frame (204) is fixedly connected with both ends of the rotor frame (201), and the port frames (204) are crossed with each other through the claw pole frame (205).

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