Automobile alternator with noise-reducing fan blades

Abstract

The present invention discloses an automobile AC generator with noise reduction blades, comprising a generator body and fan blades fixed on an output shaft of the generator body, wherein a protective shell fixedly connected to the generator body is arranged on the outer side of the fan blade, a fixing ring is fixedly connected to one side of the protective shell through a connecting piece, an annular plate is clamped between the protective shell and the fixing ring, and the annular plate is rotatably connected to the protective shell and the fixing ring on both sides respectively, a pushing mechanism is arranged on the connecting column, two pairs of wire mesh parts are driven to stagger with each other by the pushing mechanism, and the connecting column is driven by the rotating mechanism to carry the two pairs of wire mesh parts to rotate, so that dust on the arc ribs in the first protective net and the second protective net can be cleaned conveniently, and during the cleaning process, when the first protective net or the second protective net passes through the second cleaning cotton or the first cleaning cotton, the second cleaning cotton and the first cleaning cotton will exert a certain pressure on the first protective net and the second protective net, thereby achieving a better cleaning effect.

Description

Technical Field

[0001] The invention belongs to the technical field related to generators, and in particular relates to an automobile AC generator with noise reduction blades. Background Art

[0002] In order to ensure the heat dissipation effect of the generator, the fan blades are often installed on the generator. Because the outer protective cover of the fan blade is usually made of multiple sections of ribs densely arranged and welded with the reinforcing ribs, the gap is small. It is difficult to wipe the inside without removing the protective cover, and the whole is not easy to clean. It needs to be disassembled and wiped manually one by one, which not only consumes a lot of manpower, but also has low work efficiency.

[0003] Application number CN202010071992.2 discloses an electric fan blade protection cover, including a lower rib, a lower connecting rod, an upper connecting rod, an upper rib, a rolling bearing and a cleaning assembly, wherein the lower rib and the upper rib are both composed of a plurality of semi-arc-shaped round steels, an inner cavity matching the outer diameter of the upper rib is provided in the lower rib, the left ends of the lower rib and the upper rib are assembled through the inner cavity, the right ends of the lower rib and the upper rib are respectively fixedly connected to the lower connecting rod and the upper connecting rod, the upper connecting rod is connected to the outer ring of the rolling bearing, and the cleaning assembly is composed of a plurality of cylinders and their connecting plates, the cylinders are provided with inner holes, and the left end of the lower rib cooperates with the inner holes of the corresponding cylinders. The device can rotate the upper rib to rub against the cleaning hair of the lower rib, and rotate the lower rib to rub against the cleaning hair of the cleaning assembly, so as to achieve the effect of quickly cleaning the upper and lower ribs, and solve the problem that the fan blade cover is difficult to clean.

[0004] The technical solution proposed in the above document still has the following problems: there is no certain pressure when the cleaning brush contacts the mesh, and cleaning is achieved only by rotation, so the cleaning effect is limited. In addition, only one side of the mesh can be cleaned, and the other side cannot be cleaned, leaving some places that cannot be cleaned. Summary of the invention

[0005] The object of the present invention is to provide an automobile AC generator with noise reduction blades to solve the problems of low pressure, limited cleaning effect and single-sided cleaning proposed in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automobile AC generator with noise reduction blades, comprising a generator body and a fan blade fixed on an output shaft of the generator body, a protective shell fixedly connected to the generator body is arranged on the outer side of the fan blade, a fixing ring is fixedly connected to one side of the protective shell through a connecting piece, an annular plate is clamped between the protective shell and the fixing ring, the annular plate is rotatably connected to the protective shell and the fixing ring on both sides thereof, a steering drive mechanism for driving the annular plate to rotate is arranged on the protective shell, two pairs of wire mesh parts are arranged on the inner side of the annular plate, a connecting column is arranged at the inner center position of the annular plate, a pushing mechanism for driving the two pairs of wire mesh parts to stagger with each other is arranged on the connecting column, and a rotating mechanism for driving the connecting column to rotate and clean the two pairs of wire mesh parts is arranged on one side of the connecting column.

[0007] Preferably, the steering drive mechanism includes a first motor, which is fixedly mounted on the top outer wall of the protective shell, and the output shaft end of the first motor is fixedly connected with a gear, and the circumferential outer wall of the annular plate is fixedly connected with an annular rack, and the gear is meshed with the rack.

[0008] Preferably, the wire mesh comprises a first protective net and a second protective net, each of the first protective net and the second protective net comprising a plurality of concentrically arranged arc ribs, a first connecting plate is fixedly connected to one side of the first protective net, a first slider is fixedly connected to an inner end of the first connecting plate, a plurality of first balls are movably embedded in an outer end of the first connecting plate, a plurality of first cleaning cottons are fixedly connected to one side of the first connecting plate, and the positions of the plurality of first cleaning cottons correspond to the positions of the plurality of arc ribs on the second protective net, a second connecting plate is fixedly connected to one side of the second protective net, a second slider is fixedly connected to an outer end of the second connecting plate, a plurality of second balls are movably embedded in an inner end of the second connecting plate, a plurality of second cleaning cottons are fixedly connected to one side of the second connecting plate, and the positions of the plurality of second cleaning cottons correspond to the positions of the plurality of arc ribs on the first protective net, and a slope is provided on one side of the plurality of first cleaning cottons and the plurality of second cleaning cottons.

[0009] Preferably, the pushing mechanism includes a first cylinder, two first sliding grooves are provided on the circumferential surface of the connecting column, the first sliders on the two first protective nets are respectively slidably connected to the two first sliding grooves, the first cylinder is fixed in the first sliding groove, the output end of the first cylinder is fixedly connected to the first slider, two second sliding grooves are provided on the circumferential inner wall of the annular plate, the second sliders on the two second protective nets are respectively slidably connected to the two second sliding grooves, the second cylinder is fixedly connected to the inner wall of the second sliding groove, and the output end of the second cylinder is fixedly connected to the second slider.

[0010] Preferably, the rotating mechanism includes a second motor, and support plates are provided on both sides of the connecting column, one of the support plates is rotatably connected to the connecting column, the second motor is fixed on the top of the other support plate, the output shaft of the second motor is fixedly connected to the connecting column, and the bottom ends of the two support plates are respectively fixedly connected to the protective shell and the fixing ring.

[0011] Preferably, the second ball can roll on the arc surface formed by the first slider and the connecting column, and the first ball can roll on the arc surface formed by the second slider and the annular plate.

[0012] Preferably, the lengths of the first sliding block and the second sliding block can be set to allow the second ball and the first ball to still be in rolling contact with themselves after sliding in the first sliding groove and the second sliding groove.

[0013] Preferably, the first slider and the second slider are fixedly connected with T-shaped sliders at the contact ends with the first slide groove and the second slide groove respectively, and T-shaped slide grooves are opened on the inner walls of the first slide groove and the second slide groove, and the T-shaped sliders are slidably connected with the T-shaped slide grooves.

[0014] Compared with the prior art, the present invention provides an automobile AC generator with noise reduction blades, which has the following beneficial effects:

[0015] 1. The present invention arranges a push mechanism on the connecting column, drives the two pairs of wire meshes to stagger with each other through the push mechanism, and drives the connecting column to carry the two pairs of wire meshes to rotate through the rotating mechanism, so as to facilitate the cleaning of dust on the arc ribs in the first protection net and the second protection net. In addition, during the cleaning process, when the first protection net or the second protection net passes through the second cleaning cotton or the first cleaning cotton, the second cleaning cotton and the first cleaning cotton will exert a certain pressure on the first protection net and the second protection net, thereby achieving a better cleaning effect.

[0016] 2. The present invention uses the second cleaning cotton or the first cleaning cotton to successively clean both sides of the first protective net and the second protective net, so that the cleaning effect is better and the areas that cannot be cleaned are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an automobile AC generator with noise reduction fan blades proposed by the present invention;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of an automobile AC generator with noise reduction fan blades proposed by the present invention;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of the wire mesh proposed in the present invention;

[0021] Figure 4 A schematic diagram of the three-dimensional cross-sectional structure of the protective shell proposed by the present invention from another viewing angle;

[0022] Figure 5 The present invention proposes Figure 4 The enlarged structural diagram at A in the middle;

[0023] Figure 6 A schematic diagram of the three-dimensional structure of the first protection net and the second protection net proposed by the present invention;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the first protective net proposed by the present invention;

[0025] Figure 8 The present invention proposes Figure 7 The enlarged structural diagram at B in the middle;

[0026] Fig. 9 This is a schematic diagram of the three-dimensional structure of the second protection net proposed by the present invention;

[0027] Fig.10 The present invention proposes Fig. 9 The enlarged structural diagram at C in the middle;

[0028] Fig.11 This is a schematic diagram of the three-dimensional half-section structure of the protective shell proposed by the present invention;

[0029] Fig.12 The present invention proposes Fig.11 The enlarged structural diagram at D in the middle;

[0030] Fig.13 A schematic diagram of the three-dimensional cross-sectional structure of the annular plate proposed in the present invention;

[0031] Fig.14 This is a schematic diagram of the structure of the first protection net and the second protection net in the initial state proposed by the present invention;

[0032] Fig.15 A schematic diagram of the structure of the first protection net and the second protection net in the second state proposed by the present invention;

[0033] Fig.16 This is a schematic diagram of the structure of the first protection net and the second protection net in the third state proposed by the present invention;

[0034] Fig.17 This is a schematic diagram of the structure of the first protection net and the second protection net in the fourth state proposed by the present invention;

[0035] Fig.18 A schematic diagram of the structure of the first protection net and the second protection net in the fifth state proposed by the present invention;

[0036] Fig.19 A schematic diagram of the structure of the first protection net and the second protection net in the sixth state proposed by the present invention;

[0037] Fig. 20 It is a schematic diagram of the structure of the first protection net after being activated and the second protection net in the position state proposed by the present invention;

[0038] Fig.21 It is a schematic diagram of the structure of the second protection net after the second protection net is in motion and in the position state of the first protection net proposed by the present invention;

[0039] In the figure: 1. generator body; 2. fan blades; 3. protective shell; 4. connecting piece; 5. fixing ring; 6. annular plate; 7. rack; 8. first motor; 9. gear; 10. first protective net; 11. first connecting plate; 12. first slider; 13. first ball; 14. first cleaning cotton; 15. inclined plane; 16. second protective net; 17. second connecting plate; 18. second slider; 19. second ball; 20. second cleaning cotton; 21. connecting column; 22. first slide groove; 23. first cylinder; 24. second motor; 25. support plate; 26. second slide groove; 27. second cylinder. DETAILED DESCRIPTION

[0040] 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.

[0041] See also Figure 1-Figure 19The present invention provides a technical solution: an automobile AC generator with noise reduction blades, comprising a generator body 1 and a fan blade 2 fixed on the output shaft of the generator body 1, a protective shell 3 fixedly connected to the generator body 1 is arranged on the outer side of the fan blade 2, a fixing ring 5 fixedly connected to one side of the protective shell 3 through a connecting member 4, an annular plate 6 is sandwiched between the protective shell 3 and the fixing ring 5, the annular plate 6 is rotatably connected to the protective shell 3 and the fixing ring 5 on both sides thereof, and a steering drive mechanism for driving the annular plate 6 to rotate is arranged on the protective shell 3. The steering drive mechanism comprises a first motor 8, the first motor 8 is fixedly mounted on the top outer wall of the protective shell 3, a gear 9 is fixedly connected to the output shaft end of the first motor 8, an annular rack 7 is fixedly connected to the circumferential outer wall of the annular plate 6, the gear 9 is meshed with the rack 7, and the gear 9 can be driven to rotate by the first motor 8 when it is working, and the meshing relationship between the gear 9 and the rack 7 makes the annular plate 6 rotate between the protective shell 3 and the fixing ring 5.

[0042] It should be noted that two pairs of wire mesh parts are provided on the inner side of the annular plate 6, and the wire mesh parts include a first protective net 10 and a second protective net 16. In this embodiment, there are two first protective nets 10 and two second protective nets 16, and they are alternately arranged along the circumferential rotation direction. The two first protective nets 10 are arranged symmetrically with the center, and the two second protective nets 16 are arranged symmetrically with the center. The curvature of each first protective net 10 and each second protective net 16 is π / 2, that is, the two first protective nets 10 and the two second protective nets 16 are spliced ​​into a disc shape. The first protective net 10 and the second protective net 16 both include a plurality of concentrically arranged arc ribs. The arc ribs of the first protective net 10 and the second protective net 16 are arranged accordingly.

[0043] A first connecting plate 11 is fixedly connected to one side of each first protection net 10, a first slider 12 is fixedly connected to one end of the inner side of the first connecting plate 11, a plurality of first balls 13 are movably embedded at one end of the outer side of the first connecting plate 11, a plurality of first cleaning cottons 14 are fixedly connected to one side of the first connecting plate 11, and the positions of the plurality of first cleaning cottons 14 correspond to the positions of the plurality of arc-shaped ribs on the first protection net 10, a second connecting plate 17 is fixedly connected to one side of the second protection net 16, a second slider 18 is fixedly connected to one end of the outer side of the second connecting plate 17, a plurality of second balls 19 are movably embedded at one end of the inner side of the second connecting plate 17, a plurality of second cleaning cottons 20 are fixedly connected to one side of the second connecting plate 17, and the positions of the plurality of second cleaning cottons 20 correspond to the positions of the plurality of arc-shaped ribs on the second protection net 16. A slope 15 is provided on one side of the plurality of first cleaning cottons 14 and the plurality of second cleaning cottons 20, and the setting of the slope 15 can facilitate the first protection net 10 or the second protection net 16 to pass through the second cleaning cotton 20 or the first cleaning cotton 14 for cleaning operations.

[0044] The arc ribs of the first protection net 10 and the second protection net 16 are arranged correspondingly. The first cleaning cotton 14 on the first protection net 10 is arranged correspondingly to the arc ribs on the first protection net 10. When the first protection net 10 and the second protection net 16 rotate relatively, the first cleaning cotton 14 can wipe and clean the arc ribs on the second protection net 16 one by one, and the second cleaning cotton 20 can wipe and clean the arc ribs on the first protection net 10 one by one, so as to maintain the filtering capacity. The first protection net 10 and the second protection net 16 are arranged in pairs, forming a circular disc-shaped structure in the initial state, which plays a role in filtering dust.

[0045] It is worth noting that a connecting column 21 is provided at the inner center position of the annular plate 6, and a pushing mechanism for driving the two pairs of wire mesh members to stagger with each other is provided on the connecting column 21, and the pushing mechanism includes a first cylinder 23, and the circumferential surface of the connecting column 21 is provided with two first slide grooves 22, and the first sliders 12 on the two first protection nets 10 are respectively slidably connected with the two first slide grooves 22, and the first cylinder 23 is fixed in the first slide groove 22, and the output end of the first cylinder 23 is fixedly connected with the first slider 12, and the circumferential inner wall of the annular plate 6 is provided with two second slide grooves 26, and the two second protection nets 16 are provided with two second slide grooves 26. The second slider 18 is slidably connected to the two second slide grooves 26 respectively, and the second cylinder 27 is fixedly connected to the inner wall of the second slide groove 26. The output end of the second cylinder 27 is fixedly connected to the second slider 18. The first and second sliders 12 and 18 can be pushed by the first and second cylinders 23 and 27 respectively, so that the first protection net 10 and the second protection net 16 are staggered front and back, so that the first protection net 10 and the second protection net 16 are not in the same plane, so that the first cleaning cotton 14 cleans the side of the second protection net 16, and the second cleaning cotton 20 cleans the side of the first protection net 10.

[0046] It should be noted that a rotating mechanism for driving the connecting column 21 to rotate and clean the two pairs of wire mesh parts is provided on one side of the connecting column 21, and the rotating mechanism includes a second motor 24. Support plates 25 are provided on both sides of the connecting column 21, one of the support plates 25 is rotatably connected to the connecting column 21, and the second motor 24 is fixed on the top of the other support plate 25. The output shaft of the second motor 24 is fixedly connected to the connecting column 21, and the bottom ends of the two support plates 25 are respectively fixedly connected to the protective shell 3 and the fixing ring 5, so that the connecting column 21 can be driven to rotate when the second motor 24 is working.

[0047] It is worth noting that the plurality of second balls 19 can roll on the arc surface of the first slider 12 and the connecting column 21, and the plurality of first balls 13 can roll on the arc surface of the second slider 18 and the annular plate 6. The lengths of the first slider 12 and the second slider 18 are set to meet the requirement that after sliding in the first slide groove 22 and the second slide groove 26, the second balls 19 and the first slider 12 can still be in rolling contact, and the first balls 13 and the second slider 18 can still be in rolling contact.

[0048] It should be noted that the first slider 12 and the second slider 18 are fixedly connected with T-shaped sliders at the contact ends with the first slide groove 22 and the second slide groove 26 respectively, and T-shaped slide grooves are opened on the inner walls of the first slide groove 22 and the second slide groove 26, and the T-shaped sliders are slidably connected with the T-shaped slide grooves, which can improve the connection stability of the first slider 12 and the second slider 18 in the first slide groove 22 and the second slide groove 26 respectively.

[0049] The working principle and use process of the present invention are as follows: Figures 1 to 13 are the initial states of the device. Figures 14 to 19 A dynamic demonstration diagram of the device cleaning two second protection nets 16;

[0050] When the first protection net 10 and the second protection net 16 are covered with dust and affect the use, the first protection net 10 and the second protection net 16 need to be cleaned. The operation of cleaning the dust on the two second protection nets 16 is now described:

[0051] The initial position of the first protection net 10 and the second protection net 16 is as follows: Fig.14 As shown, at this time, the two first cylinders 23 are started, and the two first cylinders 23 respectively push the two first sliders 12 to move in opposite directions, thereby moving the upper first protection net 10 and the first connecting plate 11 backward (i.e., away from the observer) by a certain distance, and moving the lower first protection net 10 and the first connecting plate 11 forward (toward the observer) by a certain distance. The state at this time is as shown in FIG. Fig.15 , Fig. 20 As shown;

[0052] It should be noted that the distance moved by the two first protection nets 10 and the first connecting plate 11 is the distance moved by the first connecting plate 11 driving the first cleaning cotton 14.

[0053] In actual use, the inclined surface 15 can be set to facilitate the first protection net 10 or the second protection net 16 to pass through the second cleaning cotton 20 or the first cleaning cotton 14 for cleaning operation;

[0054] Then the first motor 8 is started, the first motor 8 drives the gear 9 to rotate through the motor shaft, the gear 9 drives the annular plate 6 to rotate through the rack 7, and the annular plate 6 drives the two second connecting plates 17 and the second protection net 16 to rotate counterclockwise through the second slider 18;

[0055] Figures 16 to 19 These are dynamic diagrams of the second protective net 16 and the second connecting plate 17 cleaning while rotating, wherein Fig.16The figure shows a state diagram of the second protection net 16 when cleaning dust on one side of the second protection net 16 while passing through the first cleaning cotton 14. At this time, the second connecting plate 17 and the second protection net 16 rotate at an angle of 150° relative to the first protection net 10. Fig.17 The second protective net 16 is shown in a state when it is about to finish cleaning the dust on one side thereof, and at this time, the tail end of the second protective net 16 is about to pass through the first cleaning cotton 14, and the second connecting plate 17 and the second protective net 16 are rotated by nearly 180° relative to the first protective net 10; Fig.18 The figure shows the state of the second protection net 16 when it passes through the first cleaning cotton 14 to clean the dust on the other side of the second protection net 16. The second connecting plate 17 and the second protection net 16 rotate at an angle of 300° relative to the first protection net 10. Fig.19 The figure shows a state when the second protection net 16 has completed cleaning on both sides. The second connecting plate 17 and the second protection net 16 rotate nearly 360 degrees relative to the first protection net 10. At this time, the first motor 8 will reverse, so that the two second protection nets 16 are reversed to the initial position. Of course, in this process, the second protection net 16 is cleaned again.

[0056] Then the first motor 8 is turned off, and the two first cylinders 23 are started to move the two first protection nets 10 and the first connecting plate 11 to the initial state. Fig.14 After that, the two second cylinders 27 are activated, and the two first cylinders 23 push the two second slide blocks 18 to move in the opposite direction, so that the second protection net 16 and the second connecting plate 17 on the left side move forward (toward the observer) by a certain distance, and the second protection net 16 and the second connecting plate 17 on the right side move backward (away from the observer) by a certain distance. The first protection net 10 and the second protection net 16 are transformed into Fig.21 In the state shown, the second motor 24 is started, and the second motor 24 drives the connecting column 21 to rotate through the motor shaft, and the connecting column 21 drives the first connecting plate 11 and the first protective net 10 to rotate clockwise through the first slider 12, so that the first protective net 10 passes through the second cleaning cotton 20 to clean dust;

[0057] After the dust on the two second protection nets 16 and the two first protection nets 10 is cleaned, the adjustment device can be restored to the initial state.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile AC generator with a noise reduction fan blade, comprising a generator body (1) and a fan blade (2) fixed on an output shaft of the generator body (1), wherein a protective shell (3) fixedly connected to the generator body (1) is arranged on the outer side of the fan blade (2), characterized in that: One side of the protective shell (3) is fixedly connected to a fixing ring (5) via a connecting piece (4); an annular plate (6) is sandwiched between the protective shell (3) and the fixing ring (5); the annular plate (6) is rotatably connected to the protective shell (3) and the fixing ring (5) located on both sides thereof; a steering drive mechanism for driving the annular plate (6) to rotate is provided on the protective shell (3); two pairs of wire mesh components are provided on the inner side of the annular plate (6); a connecting column (21) is provided at the inner center of the annular plate (6); a pushing mechanism for driving the two pairs of wire mesh components to stagger with each other is provided on the connecting column (21); and a rotating mechanism for driving the connecting column (21) to rotate and clean the two pairs of wire mesh components is provided on one side of the connecting column (21); The wire mesh comprises a first protective net (10) and a second protective net (16), each of the first protective net (10) and the second protective net (16) comprising a plurality of concentrically arranged arcuate ribs, a first connecting plate (11) is fixedly connected to one side of the first protective net (10), a first sliding block (12) is fixedly connected to an inner end of the first connecting plate (11), a plurality of first rolling balls (13) are movably embedded in an outer end of the first connecting plate (11), a plurality of first cleaning cottons (14) are fixedly connected to one side of the first connecting plate (11), and the positions of the plurality of first cleaning cottons (14) are aligned with those on the second protective net (16). The positions of the multiple arc-shaped ribs on the first protective net (10) are distributed correspondingly, a second connecting plate (17) is fixedly connected to one side of the second protective net (16), a second sliding block (18) is fixedly connected to the outer end of the second connecting plate (17), a plurality of second balls (19) are movably embedded at the inner end of the second connecting plate (17), a plurality of second cleaning cottons (20) are fixedly connected to one side of the second connecting plate (17), the positions of the plurality of second cleaning cottons (20) are distributed correspondingly to the positions of the multiple arc-shaped ribs on the first protective net (10), and a plurality of the first cleaning cottons (14) and a plurality of the second cleaning cottons (20) are both provided with an inclined surface (15) on one side; The pushing mechanism comprises a first cylinder (23), two first slide grooves (22) are provided on the circumferential surface of the connecting column (21), the first sliders (12) on the two first protective nets (10) are respectively slidably connected to the two first slide grooves (22), the first cylinder (23) is fixed in the first slide groove (22), the output end of the first cylinder (23) is fixedly connected to the first slider (12), two second slide grooves (26) are provided on the circumferential inner wall of the annular plate (6), the second sliders (18) on the two second protective nets (16) are respectively slidably connected to the two second slide grooves (26), the inner wall of the second slide groove (26) is fixedly connected to the second cylinder (27), and the output end of the second cylinder (27) is fixedly connected to the second slider (18).

2. The automotive AC generator with noise reduction blades according to claim 1, characterized in that: The steering drive mechanism comprises a first motor (8), the first motor (8) is fixedly mounted on the top outer wall of the protective shell (3), the output shaft end of the first motor (8) is fixedly connected to a gear (9), the circumferential outer wall of the annular plate (6) is fixedly connected to an annular rack (7), and the gear (9) is meshed with the rack (7).

3. The automotive AC generator with noise reduction blades according to claim 2, characterized in that: The rotating mechanism comprises a second motor (24), support plates (25) are provided on both sides of the connecting column (21), one of the support plates (25) is rotatably connected to the connecting column (21), the second motor (24) is fixed on the top of the other support plate (25), the output shaft of the second motor (24) is fixedly connected to the connecting column (21), and the bottom ends of the two support plates (25) are fixedly connected to the protective shell (3) and the fixing ring (5), respectively.

4. The automotive AC generator with noise reduction blades according to claim 3, characterized in that: The second ball (19) can roll on the arc surface formed by the first slider (12) and the connecting column (21), and the first ball (13) can roll on the arc surface formed by the second slider (18) and the annular plate (6).

5. The automotive AC generator with noise reduction blades according to claim 3, characterized in that: The lengths of the first sliding block (12) and the second sliding block (18) are set to ensure that the second ball (19) and the first ball (13) can still be in rolling contact with themselves after sliding in the first sliding groove (22) and the second sliding groove (26).

6. The automotive AC generator with noise reduction blades according to claim 3, characterized in that: The first slider (12) and the second slider (18) are fixedly connected to T-shaped sliders at the contact ends with the first slide groove (22) and the second slide groove (26), respectively, and T-shaped slide grooves are provided on the inner walls of the first slide groove (22) and the second slide groove (26), and the T-shaped sliders are slidably connected to the T-shaped slide grooves.

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