Assembly type automobile direct-current brushless cooling fan assembly capable of reducing noise

Abstract

The invention discloses an assembly type automobile direct-current brushless cooling fan assembly capable of reducing noise, and belongs to the technical field of automobile direct-current brushless cooling fan assemblys.The assembly type automobile direct-current brushless cooling fan assembly is provided with a fan assembly frame with a supporting function, and the inner surface of the fan assembly frame is rotationally connected with a fan body; comprising a positioning column installed on the inner surface of the fan body, a positioning ring is installed at the end of the outer surface of the positioning column, the positioning ring is embedded in the inner surface of a fan assembly frame, and a connecting piece is installed on the inner surface of the fan body. The stability of the fan body during use is controlled through the fan body assembled by the fan assembly frame, noise generated during rotation is reduced by arranging a positioning ring and an output shaft connected with the positioning ring, noise is reduced through positioning assembly of a motor and cooperation of a first cushioning pad, and through cooperation of a limiting piece and a second cushioning pad assembled by an extrusion rod, the stability of the fan body is improved, and the service life of the fan body is prolonged. Noise is reduced while positioning and assembling convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile DC brushless cooling fan assemblies, in particular to an assembled automobile DC brushless cooling fan assembly capable of reducing noise. Background Art

[0002] The automotive DC brushless cooling fan assembly is an important component of the automotive cooling equipment, and is driven by a DC brushless motor through the fan body, thereby improving the advantages of high efficiency, energy saving and long life of the fan, and a mounting base is provided to fix the fan and the motor. During use, it is inconvenient to effectively control the use of the fan assembly, which can easily cause the cooling fan assembly to shake, or the connecting screws can easily vibrate and fall off.

[0003] In order to overcome the above-mentioned defects, the prior art (Chinese patent application with application number CN202020613714.0 and application date 2020-04-22) is a DC brushless cooling fan assembly based on the FOC algorithm, which can quickly absorb heat by arranging multiple groups of heat sinks outside the support bar, facilitate heat absorption, and improve heat dissipation performance. At the same time, the fan blades are fixed with a single screw, which is more convenient for installation and disassembly, and easy to use; a spline slot is provided on the inner surface of the fan blade casing, and a spline protrusion is provided on the outside of the drive shaft. The casing of the fan blade is sleeved on the outside of the drive shaft, and the spline protrusion is inserted into the spline slot for meshing. When the fan blade is installed, the fan blade can be clamped The heat sink is made of aluminum sheet with a thickness of no more than one millimeter, which has good heat absorption performance and is convenient for heat dissipation. The support bars are evenly distributed on the inner surface of the circular frame, and multiple groups of heat sinks can be set to improve the heat absorption effect. There is also a prior art (application number CN202210240190.9, Chinese patent application date 2022-03-10) a DC brushless cooling fan assembly, which can quickly install and disassemble the fan through the provided mounting seat and clamp rod, and has the function of automatic tightening, and the provided shock-absorbing spring can not only buffer and weaken the vibration force generated by the fan operation, The fan body is convenient for installation and later maintenance; the limit ring is fixedly sleeved on the surface of the clamp rod, the cross-sectional shape of the clamp rod is square, one end of the clamp rod is in contact with the inner wall of the clamp hole, and one end of the clamp rod is provided with an inclined surface, and the inclined surface has the function of automatic contraction when being squeezed by the fan body, which is convenient for the installation of the fan body, and the square clamp rod can prevent the inclined surface from rotating; and the prior art (Chinese patent application with application number CN202220292851.8 and application date 2022-02-14) A low-noise DC brushless cooling fan assembly, which is connected to the fan body through a motor, a rod body, a first groove wheel, The cooperation between the belt and the second groove wheel allows the motor to drive the first groove wheel to rotate through the rod body when the device is in use. At this time, the first groove wheel and the second groove wheel are driven to rotate through the belt, and the second groove wheel can drive the rotating shaft and the first fan blade to rotate, so that the motor can drive the rotating shaft to rotate through the first groove wheel, the belt and the second groove wheel, thereby solving the problem that the direct connection between the motor and the fan shaft is inconvenient for subsequent inspection and maintenance; although the existing technology can be positioned and assembled, it is not convenient to effectively position and assemble the cooling fan assembly during work, which may easily cause loosening and falling off during use, and easily generate noise, affecting the low-noise positioning assembly use.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original automotive DC brushless cooling fan assembly. Summary of the invention

[0005] The object of the present invention is to provide an assembled automotive DC brushless cooling fan assembly with noise reduction, so as to solve the problem raised in the above background technology that it is inconvenient and ineffective to position and assemble the cooling fan assembly during operation, which may cause the fan assembly to loosen and fall off during use, and may generate noise, thus affecting the use of low-noise positioning assembly.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a noise-reducing assembled automotive DC brushless cooling fan assembly, a fan assembly frame with a supporting function is provided, and the inner surface of the fan assembly frame is rotatably connected to a fan body; including: a positioning column, which is installed on the inner surface of the fan body, and a positioning ring is installed on the outer surface end of the positioning column, and the positioning ring is nested in the inner surface of the fan assembly frame, and a connecting piece is installed on the inner surface of the fan body, and the inner surface of the connecting piece is nested and connected with an output shaft, and the fan assembly frame is provided with a positioning assembly mechanism; a limit block, which is installed on the outer surface of the motor assembled on the fan assembly frame, and the outer surface of the limit block is nested and connected with a positioning ring, and the outer surface of the positioning ring is installed with an oblique brace, and the oblique brace is nested in the inner surface of the fan assembly frame, and the fan assembly frame is provided with a limited position clamping mechanism.

[0007] Preferably, the positioning column and the positioning ring are embedded and installed at equal angles to the inner surface of the fan body, and the fan body forms a nested rotating structure with the fan assembly frame through the positioning column and the positioning ring, and the fan assembly frame forms a nested structure with the connecting part through the motor and the output shaft, and the connecting part and the fan body form an integrated structure.

[0008] Through the above structure, the stability of the fan body during use is controlled to prevent the fan body from falling off or shaking.

[0009] Preferably, the outer surface of the fan assembly frame in the positioning assembly mechanism is fitted with a shock-absorbing pad, and the outer surface of the motor assembled by the fan assembly frame is installed with a connecting block, and the outer surface of the connecting block is nested and connected with a nesting ring, and at the same time, the side of the nesting ring is extruded and connected with an extrusion piece, and a push plate is installed on the rear side of the outer surface of the extrusion piece; an extrusion spring is elastically connected between the push plate and the fan assembly frame, and a limiting rod is installed on the right side of the outer surface of the push plate, and the outer surface of the limiting rod is nested and connected with a fixing piece, and the fixing piece is fixedly installed on the outer surface of the fan assembly frame.

[0010] Through the above structure, it is convenient to stably assemble the limit rod and the extrusion rod during use, control the assembly stability of the motor installed on the connecting block to avoid loosening, and cooperate with the shock-absorbing pad to improve the noise reduction effect.

[0011] Preferably, the connecting block and the motor form an integrated structure, and the connecting block and the nesting ring form a nesting structure, and the nesting ring and the extrusion member form an extrusion structure, and the extrusion member forms a sliding structure with the fan assembly frame through a push plate.

[0012] Through the above structure, the stability of the connection block assembly can be controlled during use, and the nested ring can be used for shock absorption and extrusion, and the assembly stability can be improved.

[0013] Preferably, the push plate forms an elastic structure with the fan assembly frame through an extrusion spring, and the push plate is embedded in the rear side of the outer surface of the limit rod, and the limit rod and the fixing piece form a limiting nested structure, and the fixing piece is embedded in the outer surface of the fan assembly frame at an equal angle.

[0014] Through the above structure, the stability of the push plate can be adjusted during use, and the stability of the extrusion member and the limit rod can be controlled by the extrusion spring to avoid falling off.

[0015] Preferably, the positioning ring forms a nested structure with the motor through the limit block, and the positioning ring forms a built-in structure with the fan assembly frame through the diagonal brace, and screws are connected between the diagonal brace and the fan assembly frame, and at the same time, a support member is nested and installed on the outer surface of the fan assembly frame, and the fan assembly frame forms a locking structure with the diagonal brace through screws, and at the same time, the fan assembly frame and the support member form an integrated structure.

[0016] Through the above structure, the position of the limit block can be stably controlled during use to form a nested motor, and the stability of the fan assembly frame can be improved and vibration can be reduced through the support member.

[0017] Preferably, in the limit locking mechanism, the inner surface of the fan assembly frame is rotatably connected to the main shaft, and the outer surface of the main shaft is rotatably connected to the conveyor belt, and a worm is installed on the upper side of the outer surface of the main shaft, and the left side of the outer surface of the worm is meshedly connected to a worm wheel, and the upper surface of the worm wheel is coaxially connected to a bevel gear set; the side shaft of the bevel gear set is rotatably connected to a spur gear, and the outer front side of the spur gear is meshedly connected to a rack, and a limit member is installed on the outer surface of the rack, and the limit member is limitedly slid on the inner surface of the fan assembly frame.

[0018] Through the above structure, the main shaft can be effectively assembled during use, the stability of the worm and the worm wheel can be controlled, and it can be used to adjust the stability of the limiter during assembly.

[0019] Preferably, the main shaft and the fan assembly frame form a rotating structure, and the main shaft and the conveyor belt form a nested rotating structure, and the main shaft forms an engaged rotating structure through the worm and the worm wheel, while the worm wheel and the bevel gear set form a coaxial rotating structure.

[0020] Through the above structure, the rotation of the main shaft can be effectively controlled during use, and the worm and the worm wheel can be adjusted to cooperate to control the rotation of the bevel gear.

[0021] Preferably, the bevel gear set and the spur gear form a coaxial rotating structure, and the spur gear and the rack form a meshing sliding structure, and the rack and the limit member form an integrated structure, while the limit member and the fan assembly frame form a limit sliding structure.

[0022] Through the above structure, the position of the rack can be adjusted by controlling the spur gear during use, and the stability of the limiter can be controlled to prevent misalignment and control the stability of the limiter.

[0023] Preferably, the inner surface of the fan assembly frame is nested and connected with a fixed block, and the inner surface of the fixed block is telescopically connected with an extrusion rod, and a return spring is elastically connected between the extrusion rod and the fan assembly frame, and at the same time, the outer surface of the extrusion rod is fit-connected with a second shock-absorbing pad, and the fan assembly frame and the fixed block form a nested structure, and the fixed block forms an elastic structure with the extrusion rod through the return spring, and the extrusion rod and the second shock-absorbing pad form a fitting structure.

[0024] Through the above structure, the fixing blocks can be effectively assembled during use, and the stability of the fan assembly frame can be controlled by the extrusion rod.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the fan body assembled through the fan assembly frame can control the stability of the fan body during use, and the noise generated during rotation can be reduced by providing a positioning ring and a connected output shaft, and the positioning assembly of the motor and the cooperation of the shock-absorbing pad 1 can reduce the generation of noise, and the cooperation of the shock-absorbing pad 2 assembled by the limit piece and the extrusion rod can improve the convenience of positioning and assembly while reducing noise.

[0026] 1. A positioning assembly mechanism is provided, and a positioning ring can be installed through a positioning column assembled with the fan body to control the stability of the fan body on the fan assembly frame, and the stability of the output shaft connection is improved by assembling the connecting piece nested with the output shaft, and the noise emitted by the motor during use and the noise generated by vibration are reduced by assembling the motor through a shock-absorbing pad, and the use of the connecting block, the extrusion piece and the limit rod can improve the stability of the positioning assembly during use; further, the extrusion piece can synchronously control the position of the limit rod through the push plate when it is extruded and moved downward, and the stability of the connecting block can be improved through the fixing piece.

[0027] 2. The installation of the limit block on the motor housing can control the nesting of the diagonal brace and the fan assembly frame through the cooperation of the positioning ring and the diagonal brace, and the position of the diagonal brace can be controlled by screws to prevent it from falling off, thereby improving the shock absorption effect of the motor and reducing vibration.

[0028] 3. A limited locking mechanism is set up, which can control the worm to rotate through the rotating main shaft, and the assembled worm wheel controls a group of coaxially assembled bevel gears to rotate, and forms a bevel gear set with another group of bevel gears to control the rotation of the spur gear, and adjust the synchronous control rack to the center to improve the stability of the fan assembly frame during assembly of the limit part, and cooperate with the extrusion rod to control the shock absorption of the fan assembly frame assembly; further, through the nested assembled fixing blocks and the reset spring connected to the extrusion rod, the stability of the fan assembly frame assembly will be improved when the fan assembly frame is limitedly assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the fan assembly frame of the present invention; Figure 2 It is a semi-section three-dimensional structural schematic diagram of the fan assembly frame of the present invention; Figure 3 This is a schematic diagram of a semi-sectioned three-dimensional structure of a positioning column of the present invention; Figure 4 This is a schematic diagram of a half-section three-dimensional structure of a connecting block of the present invention; Figure 5 For the present invention Figure 4 A in the middle is an enlarged schematic diagram of the three-dimensional structure; Figure 6 This is a schematic diagram of the three-dimensional structure of the diagonal brace of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the main shaft of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting member of the present invention; Fig. 9 For the present invention Figure 8 The enlarged three-dimensional structure diagram at B in the middle; Fig.10 It is a schematic diagram of a partially cutaway three-dimensional structure of a fixing block of the present invention.

[0030] In the figure: 1. fan assembly frame; 2. fan body; 3. positioning column; 4. positioning ring; 5. connecting piece; 6. output shaft; 7. shock-absorbing pad 1; 8. connecting block; 9. nesting ring; 10. extrusion piece; 11. push plate; 1101. extrusion spring; 1102. limit rod; 1103. fixing piece; 12. limit block; 13. positioning ring; 14. diagonal support; 15. screw; 16. support piece; 17. main shaft; 18. conveyor belt; 19. worm; 20. worm wheel; 21. bevel gear set; 2101. spur gear; 2102. rack; 2103. limit piece; 22. fixing block; 23. extrusion rod; 24. reset spring; 25. shock-absorbing pad 2. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-Figure 10 The present invention provides a technical solution: a noise-reducing assembled automotive DC brushless cooling fan assembly, which is provided with a fan assembly frame 1 having a supporting function, and the inner surface of the fan assembly frame 1 is rotatably connected to a fan body 2.

[0033] Embodiment 1: Figure 1-Figure 3 The technical scheme shown in the invention provides the following technical scheme: a noise-reducing assembled automotive DC brushless cooling fan assembly is disclosed, comprising: a positioning column 3, which is installed on the inner surface of a fan body 2, and a positioning ring 4 is installed on the outer surface end of the positioning column 3, and the positioning ring 4 is nested in the inner surface of a fan assembly frame 1, and a connecting piece 5 is installed on the inner surface of the fan body 2, and an output shaft 6 is nested and connected to the inner surface of the connecting piece 5, and the fan assembly frame 1 is provided with a positioning assembly mechanism; the positioning column 3 and the positioning ring 4 are embeddedly installed at equal angles with the inner surface of the fan body 2, and the fan body 2 forms a nested rotating structure with the fan assembly frame 1 through the positioning column 3 and the positioning ring 4, and the fan assembly frame 1 forms a nested structure with the connecting piece 5 through the motor and the output shaft 6, and the connecting piece 5 and the fan body 2 form an integrated structure.

[0034] When in use, the positioning column 3 for controlling the equal-angle assembly of the fan body 2 drives the positioning ring 4 installed on the positioning column 3 to be nested in the inner surface of the fan assembly frame 1, and cooperates with the connecting piece 5 installed on the fan body 2 to stably assemble the output shaft 6 for connecting the fan body 2, thereby improving the stability of the assembly of the fan body 2, preventing the fan body 2 from vibrating, and improving the stability of the rotation of the fan body 2.

[0035] Embodiment 2: Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6The technical solution shown in the embodiment 1 also discloses the stability of the motor assembly, which is used to reduce vibration and form a positioning assembly. The specific contents are as follows: a limit block 12 is installed on the outer surface of the motor assembled on the fan assembly frame 1, and the outer surface of the limit block 12 is nested with a positioning ring 13, and the outer surface of the positioning ring 13 is installed with a diagonal brace 14, and the diagonal brace 14 is nested in the inner surface of the fan assembly frame 1, and the fan assembly frame 1 is provided with a limited position clamping mechanism; the outer surface of the fan assembly frame 1 in the positioning assembly mechanism is attached to the outer surface of the fan assembly frame 1 The fan assembly frame 1 is connected with a shock-absorbing pad 7, and the outer surface of the motor assembled by the fan assembly frame 1 is installed with a connecting block 8, and the outer surface of the connecting block 8 is nested and connected with a nesting ring 9, and the side of the nesting ring 9 is extruded and connected with an extrusion piece 10, and a push plate 11 is installed on the rear side of the outer surface of the extrusion piece 10; an extrusion spring 1101 is elastically connected between the push plate 11 and the fan assembly frame 1, and a limiting rod 1102 is installed on the right side of the outer surface of the push plate 11, and the outer surface of the limiting rod 1102 is nested and connected with a fixing piece 1103, and the fixing piece 11 03 is fixedly installed on the outer surface of the fan assembly frame 1; the connecting block 8 and the motor form an integrated structure, and the connecting block 8 and the nesting ring 9 form a nesting structure, and the nesting ring 9 and the extrusion member 10 form an extrusion structure, and the extrusion member 10 forms a sliding structure with the fan assembly frame 1 through the push plate 11; the push plate 11 forms an elastic structure with the fan assembly frame 1 through the extrusion spring 1101, and the push plate 11 and the rear side of the outer surface of the limiting rod 1102 are embedded and installed, and the limiting rod 1102 and the fixing member 1103 form a limiting nesting structure. At the same time, the fixing member 1103 is embedded and installed at an equal angle with respect to the outer surface of the fan assembly frame 1; the positioning ring 13 forms a nested structure with the motor through the limit block 12, and the positioning ring 13 forms a built-in structure with the fan assembly frame 1 through the diagonal brace 14, and the diagonal brace 14 and the fan assembly frame 1 are connected with screws 15, and at the same time, a support member 16 is nested and installed on the outer surface of the fan assembly frame 1, and the fan assembly frame 1 forms a locking structure with the diagonal brace 14 through screws 15, and at the same time, the fan assembly frame 1 and the support member 16 form an integrated structure.

[0036] When in use, the shock absorbing pad 7 of the control motor assembly is connected to the fan assembly frame 1, and the connection block 8 of the control motor assembly, and the nesting ring 9 of the connection block 8 is in contact with the extrusion piece 10, so that the extrusion piece 10 is extruded and moved backward, and the push plate 11 and the limit rod 1102 installed on the extrusion piece 10 are synchronously controlled to form an extrusion contraction on the extrusion spring 1101, and after continuous extrusion of the connection block 8, it will move to the inner surface of the fixing piece 1103, so that the connection block 8 contacts the limit rod 110 2, through the continuous rotation of the connecting block 8, the connecting block 8 is stably penetrated through the assembly limit rod 1102, thereby improving the stability of the fixing member 1103 on the connecting block 8 and preventing it from falling off, and cooperating with the limit block 12 installed on the motor, effectively nesting the assembly positioning ring 13, and cooperating with the diagonal brace 14 installed on the positioning ring 13, effectively connected to the front side of the inner surface of the fan assembly frame 1, thereby controlling the screw 15 to form a limit assembly with the diagonal brace 14, improving the stability of the motor assembly, and reducing the vibration of the motor.

[0037] Embodiment 3: Figure 1 , Figure 2 and Figure 7-10The technical solution shown, on the basis of the second embodiment, also discloses the stability of the fan assembly frame during assembly, and its specific contents are as follows: in the limiting locking mechanism, the inner surface of the fan assembly frame 1 is rotatably connected to the main shaft 17, and the outer surface of the main shaft 17 is rotatably connected to the conveyor belt 18, and a worm 19 is installed on the upper side of the outer surface of the main shaft 17, and the left side of the outer surface of the worm 19 is meshedly connected to the worm wheel 20, and the upper surface of the worm wheel 20 is coaxially connected to the bevel gear set 21; the side axis of the bevel gear set 21 is rotatably connected to the spur gear 2101, and the outer front side of the outer surface of the spur gear 2101 is meshedly connected to the rack 2102, and a limiting member 2103 is installed on the outer surface of the rack 2102, and the limiting member 2103 is limitedly slid on the inner surface of the fan assembly frame 1; the main shaft 17 and the fan assembly frame 1 constitute a rotating structure, and the main shaft 17 and the conveyor belt 18 constitute a nested rotating structure, and the main shaft 17 is rotated by The worm 19 and the worm wheel 20 form a meshing rotation structure, and the worm wheel 20 and the bevel gear set 21 form a coaxial rotation structure; the bevel gear set 21 and the spur gear 2101 form a coaxial rotation structure, and the spur gear 2101 and the rack 2102 form a meshing sliding structure, and the rack 2102 and the limiter 2103 form an integrated structure, and the limiter 2103 and the fan assembly frame 1 form a limited sliding structure; the inner surface of the fan assembly frame 1 is nested with a fixed block 22, and the inner surface of the fixed block 22 is telescopically connected with an extrusion rod 23, and a return spring 24 is elastically connected between the extrusion rod 23 and the fan assembly frame 1, and the outer surface of the extrusion rod 23 is fit-connected with a shock-absorbing pad 25, and the fan assembly frame 1 and the fixed block 22 form a nested structure, and the fixed block 22 forms an elastic structure with the extrusion rod 23 through the return spring 24, and the extrusion rod 23 and the shock-absorbing pad 25 form a fitting structure.

[0038] When in use, the fan assembly frame 1 is placed in the assembly position, and the fixed block 22 installed on the fan assembly frame 1 is controlled to contract the extrusion rod 23, and the extrusion reset spring 24 is contracted, and the shock-absorbing pad 25 is controlled to contact the assembly position, and the buffering use after the fan assembly frame 1 is controlled. After extrusion, the fan assembly frame 1 is controlled to adjust the rotation of the main shaft 17, and drive the conveyor belt 18 connected to another group of main shafts 17 to rotate synchronously, drive the worm 19 set at equal distances to control the rotation of the worm wheel 20, and synchronously drive a group of bevel gears set by the bevel gear set 21 to rotate coaxially, and drive another group of bevel gears to mesh and rotate, and control the rotation of the coaxial spur gear 2101, so that the meshing control rack 2102 slides on the inner surface of the fan assembly frame 1, and the limiter 2103 installed on the adjustable rack 2102 forms a positioning assembly for the fan assembly frame 1, and cooperates with the worm 19, the worm wheel 20 and the bevel gear set 21 to avoid loosening, thereby improving the installation stability of the fan assembly frame 1.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] 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. A noise-reducing assembled automobile DC brushless cooling fan assembly, comprising a fan assembly frame (1) having a supporting function, and a fan body (2) being rotatably connected to the inner surface of the fan assembly frame (1); It is characterized in that include: A positioning column (3) is mounted on the inner surface of the fan body (2), and a positioning ring (4) is mounted on the outer surface end of the positioning column (3), and the positioning ring (4) is nested in the inner surface of the fan assembly frame (1), and a connecting piece (5) is mounted on the inner surface of the fan body (2), and an output shaft (6) is nested and connected to the inner surface of the connecting piece (5), and the fan assembly frame (1) is provided with a positioning assembly mechanism; A limit block (12) is mounted on the outer surface of the motor assembled on the fan assembly frame (1), and a positioning ring (13) is nested and connected to the outer surface of the limit block (12), and an oblique support (14) is installed on the outer surface of the positioning ring (13), and the oblique support (14) is nested in the inner surface of the fan assembly frame (1), and the fan assembly frame (1) is provided with a limit locking mechanism.

2. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 1, characterized in that: The positioning column (3) and the positioning ring (4) are embedded and installed at equal angles with the inner surface of the fan body (2), and the fan body (2) forms a nested rotating structure with the fan assembly frame (1) through the positioning column (3) and the positioning ring (4), and the fan assembly frame (1) forms a nested structure with the connecting member (5) through the motor and the output shaft (6), and the connecting member (5) and the fan body (2) form an integrated structure.

3. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 1, characterized in that: In the positioning assembly mechanism, the outer surface of the fan assembly frame (1) is fitted with a shock-absorbing pad (7), and the outer surface of the motor assembled on the fan assembly frame (1) is installed with a connecting block (8), and the outer surface of the connecting block (8) is nested and connected with a nesting ring (9), and the side of the nesting ring (9) is extruded and connected with an extrusion piece (10), and the rear side of the outer surface of the extrusion piece (10) is installed with a push plate (11); an extrusion spring (1101) is elastically connected between the push plate (11) and the fan assembly frame (1), and a limiting rod (1102) is installed on the right side of the outer surface of the push plate (11), and the outer surface of the limiting rod (1102) is nested and connected with a fixing piece (1103), and the fixing piece (1103) is fixedly installed on the outer surface of the fan assembly frame (1).

4. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 3, characterized in that: The connecting block (8) and the motor form an integrated structure, the connecting block (8) and the nesting ring (9) form a nesting structure, the nesting ring (9) and the extrusion piece (10) form an extrusion structure, and the extrusion piece (10) forms a sliding structure with the fan assembly frame (1) via a push plate (11).

5. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 3, characterized in that: The push plate (11) forms an elastic structure with the fan assembly frame (1) through the compression spring (1101), and the push plate (11) is embedded and installed at the rear side of the outer surface of the limiting rod (1102), and the limiting rod (1102) and the fixing member (1103) form a limiting nested structure, and the fixing member (1103) is embedded and installed at an equal angle with respect to the outer surface of the fan assembly frame (1).

6. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 1, characterized in that: In the position-limiting locking mechanism, the inner surface of the fan assembly frame (1) is rotatably connected to a main shaft (17), and the outer surface of the main shaft (17) is rotatably connected to a conveyor belt (18), and a worm (19) is mounted on the upper side of the outer surface of the main shaft (17), while the left side of the outer surface of the worm (19) is meshingly connected to a worm wheel (20), and the upper surface of the worm wheel (20) is coaxially connected to a bevel gear set (21).

7. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 6, characterized in that: The side shaft of the bevel gear set (21) is rotatably connected to a spur gear (2101), and the front side of the outer surface of the spur gear (2101) is meshingly connected to a rack (2102), and a limiting member (2103) is installed on the outer surface of the rack (2102), and the limiting member (2103) is limitedly slid on the inner surface of the fan assembly frame (1).

8. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 6, characterized in that: The main shaft (17) and the fan assembly frame (1) form a rotating structure, and the main shaft (17) and the conveyor belt (18) form a nested rotating structure. The main shaft (17) forms a meshing rotating structure with the worm (19) and the worm wheel (20), and the worm wheel (20) and the bevel gear set (21) form a coaxial rotating structure.

9. The noise-reducing assembled automotive DC brushless cooling fan assembly according to claim 7, characterized in that: The bevel gear set (21) and the spur gear (2101) form a coaxial rotation structure, the spur gear (2101) and the rack (2102) form a meshing sliding structure, the rack (2102) and the limiting member (2103) form an integrated structure, and the limiting member (2103) and the fan assembly frame (1) form a limiting sliding structure.

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