Mounting structure of automobile cooling fan

Abstract

The utility model discloses a mounting structure of an automobile cooling fan, which structurally comprises a base and a fan cover cap, a driving motor is fixedly mounted at the center of the inner side of the fan cover cap, an output shaft of the driving motor is in driving connection with fan blades, and a sinking step matched with the fan cover cap is formed on the base. Air passing openings matched with the fan blades are formed in the inner bottom of the sinking step, a plurality of U-shaped grooves are distributed in the outer opening end of the sinking step at equal intervals in the axial direction, an elastic clamping piece is formed in each U-shaped groove, and annular clamping grooves matched with the elastic clamping pieces are formed in the peripheral face of the fan cover. The fan cover cap and the base are detachably connected through buckling fit between the elastic clamping piece and the annular clamping groove. Through the buckling design of the elastic clamping piece in the sinking step U-shaped groove of the base and the annular clamping groove of the fan cover cap, tool-free rapid installation is achieved, operation is convenient and efficient, multi-point uniform stress is achieved during connection, the anti-vibration performance is excellent, and looseness is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive cooling device technology, and more specifically, to an installation structure for an automotive cooling fan. Background Technology

[0002] In automotive cooling systems, the cooling fan is a key component, and the reliability and ease of its installation structure directly affect the overall vehicle cooling performance and maintenance efficiency.

[0003] Traditional automotive radiator fan mounting structures typically employ screw fastening, where multiple screws secure the fan cover to the base. This method has significant drawbacks: firstly, the installation process requires tools such as screwdrivers, making the steps cumbersome and inefficient, especially in mass production or after-sales maintenance scenarios, where it is time-consuming and increases labor costs; secondly, screw fastening is prone to uneven stress, and under the vibrations generated by long-term vehicle operation, the screws can easily loosen or even fall off, causing the fan cover to separate from the base. This not only affects heat dissipation but may also pose safety hazards, such as damage to other vehicle parts if the component detaches. Therefore, a new automotive radiator fan mounting structure is urgently needed to solve the technical problems of inconvenient installation and unstable connection associated with traditional screw fastening methods. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an installation structure for an automotive cooling fan to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an installation structure for an automotive cooling fan, comprising a base and a fan cover, wherein a drive motor is fixedly mounted at the center of the inner side of the fan cover, and the output shaft of the drive motor drives and connects to fan blades; the base is formed with a recessed step adapted to the fan cover, and an air vent adapted to the fan blades is formed at the bottom of the recessed step; a plurality of U-shaped grooves are axially equidistant and spaced apart at the outer opening end of the recessed step, and an elastic clip is formed in each U-shaped groove; an annular groove adapted to the elastic clip is formed on the outer circumferential surface of the fan cover; the fan cover and the base are detachably connected by a snap-fit ​​between the elastic clip and the annular groove.

[0006] The present invention is further configured such that: the elastic clamping element includes an elastic clamping plate, and the inner side wall of the elastic clamping plate is formed with a clamping part adapted to the annular clamping groove.

[0007] The present invention is further configured such that: the cross-section of the clamping part is an isosceles trapezoidal structure, and two first oblique waists are formed on both sides.

[0008] The present invention is further configured such that the cross-section of the clamping part has an outwardly convex arc-shaped structure.

[0009] The present invention is further configured such that: the outer wall of the elastic plate is formed with a mating protrusion, a second inclined waist is formed on one side of the mating protrusion, and an adjusting ring is sleeved on the outer surface of the base, the adjusting ring being threadedly connected to the base so that it can move axially along the base.

[0010] The present invention is further configured such that: a mounting part is formed on the outer peripheral surface of the base, and a plurality of through holes are equidistantly distributed around the center point of the base. A screw mounting seat is placed inside the through hole, and a fastening hole is formed at the center of the screw mounting seat. A first movable gap exists between the screw mounting seat and the through hole.

[0011] The present invention is further configured such that: the outer opening end of the through hole is formed with a first countersunk hole and a second countersunk hole from the inside to the outside; the screw mounting seat includes a columnar part adapted to the through hole and a disc part adapted to the first countersunk hole; a limiting piece is installed in the second countersunk hole; the limiting piece, in the installed state, limits the threaded mounting seat in the first countersunk hole to prevent it from coming out.

[0012] In summary, this utility model has the following beneficial effects: The snap-fit ​​design of the elastic clip in the U-shaped groove of the recessed base and the annular groove of the fan cover enables tool-free, rapid installation, making operation convenient and efficient. Furthermore, the connection is achieved through multi-point uniform force distribution, resulting in excellent vibration resistance and effectively preventing loosening. Simultaneously, the adjusting ring on the outer periphery of the base, the mating protrusion on the outer side of the elastic clip, and the second inclined waist form a limiting fit. Axial movement is achieved through a threaded connection, precisely adjusting the deformation of the elastic clip. This allows for flexible control of the tightness of the connection between the fan cover and the base, preventing damage from excessive tightness. It also provides a stable limit when the adjusting ring and the second inclined waist are fully engaged, ensuring a tight fit between the fan cover and the base and eliminating the risk of separation during operation. In addition, the screw mounting seat in the through hole of the base mounting part has a first movable clearance, which can compensate for installation position errors, reducing installation difficulty. Combined with the limiting plate structure, it prevents the screw from coming loose, comprehensively ensuring the stability and reliability of the installation structure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of the local structure at point A;

[0016] Figure 3This is a cross-sectional view of the installation part of this utility model;

[0017] Figure 4 This is a schematic diagram of the second embodiment of the clamping part of this utility model.

[0018] Reference numerals: 1. Base; 10. Recessed step; 11. Air vent; 12. U-shaped groove; 13. Adjusting ring; 2. Fan cover; 20. Drive motor; 21. Fan blade; 22. Annular groove; 3. Elastic retainer; 30. Elastic retaining plate; 31. Clamping part; 32. Matching protrusion; 33. First inclined section; 34. Second inclined section; 4. Mounting part; 40. Through hole; 41. Screw mounting seat; 42. Fastening hole; 43. First movable clearance; 44. First countersunk hole; 45. Second countersunk hole; 46. Columnar part; 47. Disc part; 48. Limiting piece. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 As shown, an installation structure for an automotive cooling fan according to an embodiment of this utility model includes a base 1 and a fan cover 2. A drive motor 20 is fixedly mounted at the center of the inner side of the fan cover. The output shaft of the drive motor 20 drives and connects to the fan blades 21. The base 1 is formed with a recessed step 10 that matches the fan cover 2. An air vent 11 that matches the fan blades 21 is formed at the bottom of the recessed step 10. Several U-shaped grooves 12 are axially equidistant and spaced apart at the outer opening end of the recessed step 10. An elastic clip 3 is formed in each U-shaped groove 12. An annular groove 22 that matches the elastic clip 3 is formed on the outer circumferential surface of the fan cover 2. The fan cover 2 and the base 1 are detachably connected by the snap-fit ​​between the elastic clip 3 and the annular groove 22.

[0021] In use, this utility model provides a U-shaped groove 12 and an elastic clip 3 in the recessed step 10 of the base 1, and an annular clip 22 in the fan cover 2. The snap-fit ​​mechanism enables a detachable connection. Compared with traditional screw fixing, the installation process does not require tools, and the operation is simple and convenient, greatly improving the installation efficiency. At the same time, the snap-fit ​​structure can achieve multi-point uniform force distribution, resulting in higher connection stability and making it less prone to loosening under vehicle vibration.

[0022] The elastic clamp 3 includes an elastic clamping plate 30, and the inner side wall of the elastic clamping plate 30 is formed with a clamping part 31 that is adapted to the annular clamping groove 22.

[0023] In use, the elastic clip 3 adopts an elastic clip plate 30 structure, which uses the elastic deformation of the elastic clip plate 30 to achieve engagement and disengagement with the annular clip groove 22, ensuring the reliability of the clip connection.

[0024] The clamping part 31 has an isosceles trapezoidal cross-section, with two first oblique waists 33 formed on both sides.

[0025] The above is the first embodiment of the clamping part 31 of this utility model. Please refer to the appendix of the specification. Figure 2 When in use, the first inclined waists 33 on both sides of the isosceles trapezoidal clamping part 31 can guide the elastic clamping plate 30 and the annular groove 22 when they are engaged, making the engagement process smoother. At the same time, the shape of the isosceles trapezoid makes the clamping part 31 and the annular groove 22 engage to form a stable wedge-tightening effect, further enhancing the firmness of the connection and preventing the fan cover 2 from accidentally coming off.

[0026] The clamping part 31 has an outwardly convex arc-shaped cross-section.

[0027] The above is the second embodiment of the locking part 31 of this utility model. Please refer to the appendix of the specification. Figure 4 When in use, the outwardly convex arc-shaped clamping part 31, when in contact with the annular groove 22, can evenly distribute the pressure during engagement, reduce wear between the clamping part 31 and the groove, and extend the service life of the elastic clamp 3; and the arc-shaped structure makes engagement and disengagement operations easier, facilitating the quick installation and removal of the fan cover 2.

[0028] The outer wall of the elastic plate 30 is formed with a mating protrusion 32, and a second inclined waist 34 is formed on one side of the mating protrusion 32. An adjusting ring 13 is sleeved on the outer surface of the base 1. The adjusting ring 13 is threadedly connected to the base 1 so that it can move axially along the base 1.

[0029] In use, the inner circumferential surface of the adjusting ring 13 has an internal thread, and the outer circumferential surface of the base 1 has an external thread that matches the adjusting ring. The mating protrusion 32 and the second inclined waist 34 on the outer side of the elastic plate 30 cooperate with the adjusting ring 13. By rotating the adjusting ring 13, it can move along the axial direction of the base 1, which can precisely adjust the degree of elastic deformation of the elastic plate 30, thereby adjusting the tightness of the connection between the fan cover 2 and the base 1. This ensures a firm connection and avoids damage to components due to excessive tightness, improving the applicability of the installation structure. When the adjusting ring 13 and the second inclined waist 34 of the mating protrusion 32 are completely abutted, the elastic plate 30 is locked in a limiting position. At this time, the elastic plate 30 remains in a limited position, meaning that the fan cover 2 will not come off the base 1.

[0030] The outer peripheral surface of the base is formed with a mounting part 4. The mounting part 4 has a plurality of through holes 40 that are equidistant from the center point of the base 1. The through holes 40 are fitted with screw mounting seats 41 and a fastening hole 42 is formed at the center of the screw mounting seats 41. There is a first movable gap 43 between the screw mounting seats 41 and the through holes 40.

[0031] During use, the first movable gap 43 between the screw mounting base 41 and the through hole 40 allows the screw mounting base 41 to move freely within a certain range, which can effectively compensate for the positional error between the base 1 and the mounting surface, making the installation process more flexible, reducing the installation difficulty, and ensuring the stability after installation.

[0032] The through hole 40 has a first countersunk hole 44 and a second countersunk hole 45 formed from the inside to the outside. The screw mounting base 41 includes a columnar part 46 that is adapted to the through hole 40 and a disc part 47 that is adapted to the first countersunk hole 44. A limiting piece 48 is installed in the second countersunk hole 45. When the limiting piece 48 is installed, it limits the threaded mounting base to the first countersunk hole 44 to prevent it from coming out.

[0033] In use, the screw mounting base 41 is secured within the first countersunk hole 44 by the cooperation of the first countersunk hole 44, the second countersunk hole 45, the columnar portion 46 and the disc portion 47 of the screw mounting base 41, and the limiting piece 48, preventing it from coming out and ensuring that the position of the screw mounting base 41 is fixed during use, thereby improving the overall reliability of the installation structure. The limiting piece 48 is fixed in the second countersunk hole 45 by fasteners. During daily use, the screw mounting base 41 can be replaced by disassembling the limiting piece 48. The limiting piece 48 has a through hole that matches the through hole 40.

[0034] The specific working process of this utility model is as follows:

[0035] During installation, first fix the drive motor 20 in the center of the inner side of the fan cover 2, connect the fan blades 21, and then align the fan cover 2 with the recessed step 10 of the base 1, so that the annular groove 22 on the outer circumference of the fan cover 2 corresponds to the elastic clip 3 in the U-shaped groove 12 of the recessed step 10 of the base 1. Press down the fan cover 2, and the clamping part 31 of the elastic clip 30 will undergo elastic deformation under the compression of the annular groove 22. When the clamping part 31 passes the edge of the annular groove 22, the elastic clip 30 will return to its original shape, and the clamping part 31 will be inserted into the annular groove 22, thus completing the initial snap-fit ​​connection between the fan cover 2 and the base 1.

[0036] Next, rotate the threaded adjusting ring 13 to move it along the axial direction of the base 1. The threaded adjusting ring 13 pushes or pulls the elastic plate 30 by cooperating with the protrusion 32 and the second inclined waist 34, thereby adjusting the elastic deformation degree of the elastic plate 30, thereby adjusting the tightness of the connection between the fan cover 2 and the base 1, ensuring that the connection is firm and will not be too tight and damage the components; when the adjusting ring 13 and the second inclined waist 34 are fully pressed together, a stable limit is formed, ensuring that the fan cover 2 and the base 1 are tightly connected, eliminating the risk of separation during operation;

[0037] Finally, the base 1 is fixed to the mounting surface of the car cooling system through the fastening hole 42 of the screw mounting base 41. Since there is a first movable gap 43 between the screw mounting base 41 and the through hole 40, it can adapt to a certain position error during the installation process, so that the screw can pass through the fastening hole 42 smoothly and be tightened. The limiting piece 48 restricts the screw mounting base 41 in the first countersunk hole 44 to prevent it from coming out during use and to ensure the stability of the entire mounting structure.

[0038] During disassembly, rotate the threaded adjusting ring 13 in the opposite direction to reduce the deformation of the elastic clamping plate 30, thereby reducing the clamping force between the clamping part 31 and the annular groove 22. Then lift the fan cover 2 upwards, and the clamping part 31 of the elastic clamping plate 30 will disengage from the annular groove 22, thus separating the fan cover 2 from the base 1.

[0039] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0040] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0041] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An installation structure of an automobile heat dissipation fan, comprising a base (1) and a fan cover (2), characterized in that: A drive motor (20) is fixedly installed at the center of the inner side of the fan cover. The output shaft of the drive motor (20) drives and connects to the fan blade (21). The base (1) is formed with a recessed step (10) that matches the fan cover (2). The bottom of the recessed step (10) is formed with an air passage (11) that matches the fan blade (21). The outer opening end of the recessed step (10) is axially equidistantly distributed with several U-shaped grooves (12). Each U-shaped groove (12) is formed with an elastic clip (3). The outer circumferential surface of the fan cover (2) is formed with an annular groove (22) that matches the elastic clip (3). The fan cover (2) and the base (1) are detachably connected by the snap-fit ​​between the elastic clip (3) and the annular groove (22).

2. The mounting structure for an automobile radiator fan according to claim 1, characterized in that: The elastic clip (3) includes an elastic clip plate (30), and the inner sidewall of the elastic clip plate (30) is formed with a clamping part (31) that is adapted to the annular clip groove (22).

3. The mounting structure for an automotive radiator fan according to claim 2, characterized in that: The clamping part (31) has an isosceles trapezoidal cross-section, with two first oblique waists (33) formed on both sides.

4. The mounting structure for an automotive radiator fan according to claim 2, characterized in that: The clamping part (31) has an outwardly convex arc-shaped cross-section.

5. The mounting structure for an automobile radiator fan according to claim 2, characterized in that: The outer wall of the elastic plate (30) is formed with a mating protrusion (32), and a second inclined waist (34) is formed on one side of the mating protrusion (32). An adjusting ring (13) is sleeved on the outer surface of the base (1). The adjusting ring (13) is threadedly connected to the base (1) so that it can move axially along the base (1).

6. The mounting structure for an automobile radiator fan according to claim 1, characterized in that: The base (1) has an installation part (4) formed on its outer peripheral surface. The installation part (4) has a plurality of through holes (40) distributed at equal intervals around the center point of the base (1). Each through hole (40) has a screw mounting seat (41) inside it, and a fastening hole (42) is formed at the center of the screw mounting seat (41). There is a first movable gap (43) between the screw mounting seat (41) and the through hole (40).

7. The mounting structure for an automotive radiator fan according to claim 6, characterized in that: The open end of the through hole (40) is formed from the inside to the outside with a first countersunk hole (44) and a second countersunk hole (45). The screw mounting base (41) includes a columnar part (46) adapted to the through hole (40) and a disc part (47) adapted to the first countersunk hole (44). A limiting piece (48) is installed in the second countersunk hole (45). When the limiting piece (48) is installed, it limits the threaded mounting base in the first countersunk hole (44) to prevent it from coming out.

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