Automobile radiator fan of module efficient assembly mechanism

Abstract

The utility model discloses an automobile radiator fan of a module efficient assembly mechanism, and belongs to the technical field of automobile radiating systems. The fan comprises a fan blade module, a frame module and a motor module, the fan blade module, the frame module and the motor module are quickly assembled through modular design, the frame module comprises an annular frame body, an annular motor mounting hole is formed in the middle axis position of the annular frame body, and the motor module is connected with the hole wall of the motor mounting hole through a pre-positioning connecting mechanism; in the rotor assembly of the motor module, an elastic sheet is arranged on the inner bottom wall of a silicon steel sheet placing groove, and a magnet block is pressed by the elastic sheet to replace a traditional magnet frame. By means of the modularized positioning structure and the simplified rotor design, the problems that a traditional radiator fan is low in assembling efficiency, complex in structure and high in manufacturing cost are solved, and the radiator fan has the advantages of being rapid in assembling, accurate in positioning and low in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile cooling systems, and specifically relates to a fan modular assembly mechanism for an automobile radiator, and more particularly to a fan assembly with the advantages of rapid positioning, simplified structure and low-cost manufacturing. Background Art

[0002] As a core component of the engine cooling system, the performance of the car radiator's fan directly affects the heat dissipation efficiency. The traditional car radiator fan assembly method has the following defects:

[0003] Complex structure and low assembly efficiency: The motor, frame, blades and other components of traditional fans need to be fixed one by one with multiple sets of bolts, and the positioning accuracy relies on manual calibration, resulting in cumbersome and time-consuming assembly steps;

[0004] Redundant rotor structure: Traditional rotors require an additional magnet rack to secure the magnet blocks, increasing the number of parts and manufacturing costs. Furthermore, during installation, the rotor's dynamic balance may be unbalanced due to misalignment of the magnet block positioning.

[0005] Low degree of modularity: Each functional component (such as motor, frame, and fan blade) is assembled independently, and there is a lack of quick docking structure between modules, making it difficult to achieve automated or semi-automated assembly.

[0006] Therefore, there is an urgent need for a modular assembly mechanism for an automobile radiator fan with a simplified structure, efficient assembly and controllable costs. Utility Model Content

[0007] To solve the above problems, the purpose of the present invention is to provide a modular and efficiently assembled automobile radiator fan, which solves the problems of low assembly efficiency, complex structure and high manufacturing cost of traditional radiator fans through modular design, rapid positioning structure and simplified rotor assembly.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a modular high-efficiency assembly mechanism for an automobile radiator fan, comprising a fan blade module, a frame module and a motor module, which constitute a modular assembly mechanism; the fan blade module is connected to the rotating shaft of the motor module, the frame module comprises an annular frame body, an annular motor mounting hole is opened at the central axis position of the frame body, the motor module and the hole wall of the motor mounting hole are connected by a pre-positioning connection mechanism, the motor module comprises a stator assembly, a rotor assembly and a rotating shaft; the rotor assembly comprises a rotating shaft, stacked silicon steel sheets, a magnet block and an elastic sheet; the rotating shaft passes through the central axis hole of the stacked silicon steel sheets and is fixed thereto; at least two placement grooves are evenly opened along the circumferential direction on the stacked silicon steel sheets, and an elastic sheet is provided on the inner bottom wall of each placement groove, the tip of the elastic sheet abuts against the peripheral wall of the magnet block, pressing the magnet block tightly into the placement groove.

[0009] The pre-positioning connection mechanism includes at least two support plates uniformly protruding along the circumferential direction on the hole wall of the motor mounting hole; a protrusion is also protruding on the support plate, and a first positioning groove is formed between the protrusion and the end face of the support plate; at least two mounting protrusions are uniformly protruding along the circumferential direction on the outer edge of the motor module, and each of the mounting protrusions is provided with a screw hole; the outer edge of the motor module is also provided with a second positioning groove matching the edge of each protrusion; the motor module is embedded in the first positioning groove of the support plate through the mounting protrusion, and the edge of the protrusion is embedded in the second positioning groove of the motor module to achieve pre-positioning with the frame module; the motor module is fixed to the frame module by screws passing through the support plate and screwed into the screw holes of the mounting protrusions.

[0010] The frame module has four support plates, the motor module has four mounting protrusions, and the motor module has four second positioning grooves on its outer edge. The support plates, mounting protrusions, and second positioning grooves are evenly distributed circumferentially.

[0011] The elastic sheet and the placement groove on the silicon steel sheet are integrally formed by stamping, the tip of the elastic sheet faces the opening direction of the placement groove, and the tip of the elastic sheet is in interference contact with the peripheral wall of the magnet block.

[0012] The magnet block is a square structure, wherein the dividing line is aligned with the diameter of the silicon steel sheet.

[0013] The rotating shaft of the motor module is fixed to the stacked silicon steel sheets by interference fit or rivets. The stator assembly includes a stator core and a winding, and the winding is wound in the tooth slots of the stator core.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. Modular assembly improves efficiency: The fan is decomposed into three independent modules: blades, frame, and motor. Each module is pre-aligned through a positioning structure and then fixed, eliminating the steps of calibrating multiple bolts one by one in traditional assembly, thus shortening assembly time.

[0016] 2. Rapid positioning structure to reduce errors: The support plate of the frame module cooperates with the mounting convex plate of the motor module through the first positioning groove, while the convex block engages with the second positioning groove to realize the "double positioning" structure, ensuring the coaxiality and circumferential position accuracy of the motor module and the frame module, and avoiding manual calibration errors;

[0017] 3. Simplified rotor structure and reduced costs: The magnet blocks are directly pressed by the elastic sheets placed in the silicon steel sheet slots, eliminating the traditional magnet frame and reducing the number of parts. At the same time, the elastic deformation of the elastic sheets can automatically compensate for the dimensional deviation of the magnet blocks, improving the dynamic balance performance of the rotor.

[0018] 4. Reliable connection and easy maintenance: The screw connection structure is convenient for later disassembly and maintenance. If you need to replace the motor or fan module, you only need to loosen the corresponding screws to complete the module separation without disassembling the radiator as a whole.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cutaway perspective view of a specific embodiment of the present utility model;

[0021] Figure 2 It is a partial diagram of a specific embodiment of the present utility model;

[0022] Figure 3 for Figure 2 A magnified view of middle A;

[0023] Figure 4 for Figure 2 Magnified view of B.

[0024] In the figure, 1-blade module; 11-blade body; 2-frame module; 21-motor mounting hole; 22-support plate; 221-connecting hole; 222-bump; 223-first positioning slot; 23-frame body; 3-motor module; 31-stator assembly; 32-rotor assembly; 321-rotating shaft; 322-silicon steel sheet; 323-magnet block; 324-elastic sheet; 325-placement slot; 33-mounting convex plate; 331-screw hole; 34-second positioning slot. DETAILED DESCRIPTION

[0025] The present invention is described in detail below through examples, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] like Figure 1 — Figure 4 As shown, this embodiment discloses a modular and efficiently assembled automobile radiator fan, including a fan blade module 1, a frame module 2 and a motor module 3.

[0027] The fan blade module 1 is composed of a fan blade body 11, which is sleeved on the end of the rotating shaft 321 of the motor module 3 through an interference fit (for example, the end of the rotating shaft 321 is processed with a taper, and the inner hole of the fan blade body 11 matches it, and is pressed in through thermal expansion and contraction or a press), ensuring that the fan blade and the rotating shaft rotate synchronously.

[0028] Frame module 2: The overall structure is an annular frame (frame body 23), with a circular motor mounting hole 21 (with a diameter slightly larger than the outer diameter of motor module 3) defined at the axis. Four support plates 22 (the number can be adjusted based on motor size) are evenly distributed along the circumference of the motor mounting hole 21. Each support plate 22 has a protruding block 222 (5mm wide, 3mm high). A first positioning groove 223 (2mm deep, with a width matching the thickness of the mounting block 33 of motor module 3) is formed between the block 222 and the end surface of the support plate 22. The support plate 22 also has a connecting hole 221 (6mm in diameter) for connection to the motor module housing.

[0029] Motor module 3: includes a stator assembly 31 (consisting of a stator core and windings), a rotor assembly 32, and a rotating shaft 321. The specific structure of the rotor assembly 32 is as follows:

[0030] The rotating shaft 321 is a metal cylinder that passes through the central axis hole of the stacked silicon steel sheets 322 and has an interference fit therewith (the silicon steel sheets 322 are formed by stamping and fixed by rivets or welding after stacking);

[0031] Four placement slots 325 are evenly distributed along the circumference of the stacked silicon steel sheets 322 (the same number as the magnet blocks 323). An elastic sheet 324 (0.5 mm thick, arc-shaped, with the tip facing the slot opening) is provided on the inner bottom wall of each placement slot 325.

[0032] The magnet block 323 is a block-shaped structure. When installed, it is placed in the placement groove 325. The tip of the elastic sheet 324 elastically deforms and abuts against the peripheral wall of the magnet block 323, pressing the magnet block 323 to the bottom of the placement groove 325 (the pressing force can be adjusted by the initial bending angle of the elastic sheet);

[0033] The outer edge of the motor module 3 is uniformly circumferentially provided with four mounting protrusions 33 (the same number as the support plates 22 of the frame module 2). Each mounting protrusion 33 has a screw hole 331 (6 mm in diameter). Screws pass through the screw holes and connect to the mounting protrusion 33, thus connecting the motor module to the frame module. The connection holes 221 of the support plate 22 are used to install the entire radiator fan. In addition, the outer edge of the motor module 3 is provided with four second positioning slots 34 (matching the shape of the outer edge of the protrusion 222). These slots 34 are used to mate with the edge of the protrusion 222 for positioning. The mounting protrusions 33 mate with the first positioning slots 223 for positioning, thus forming a pre-positioned connection mechanism between the motor module and the frame module.

[0034] Assembly process:

[0035] Insert the end of the rotating shaft 321 of the motor module 3 into the inner hole of the fan body 11 of the fan module 1 to complete the pre-connection between the fan module 1 and the motor module 3;

[0036] Push the motor module 3 axially into the motor mounting hole 21 of the frame module 2 so that the mounting protrusion 33 fits into the first positioning groove 223 of the support plate 22 and the protrusion 222 fits into the second positioning groove 34 of the motor module 3.

[0037] Use screws to pass through the screw holes 331 of the protruding plate 33 and screw into the supporting plate 22 to fix the motor module 3 on the frame module 2;

[0038] Finally, the fan blade module 1, the frame module 2 and the motor module 3 are positioned and connected in a modular manner to form a complete radiator fan assembly.

[0039] After adopting the above technical solution, the following effects can be achieved:

[0040] 1. Modular assembly improves efficiency: The fan is decomposed into three independent modules: blades, frame, and motor. Each module is pre-aligned through a positioning structure and then fixed, eliminating the steps of calibrating multiple bolts one by one in traditional assembly, and the assembly time can be shortened by more than 40%;

[0041] 2. Rapid positioning structure to reduce errors: The support plate of the frame module cooperates with the mounting convex plate of the motor module through the first positioning groove, while the convex block engages with the second positioning groove to realize the "double positioning" structure, ensuring the coaxiality and circumferential position accuracy of the motor module and the frame module, and avoiding manual calibration errors;

[0042] 3. Simplified rotor structure and reduced costs: The magnet blocks are directly pressed by the elastic sheets placed in the silicon steel sheet slots, eliminating the traditional magnet frame and reducing the number of parts (by about 30%). At the same time, the elastic deformation of the elastic sheets can automatically compensate for the dimensional deviation of the magnet blocks, improving the dynamic balance performance of the rotor.

[0043] 4. Reliable connection and easy maintenance: The screw connection structure is convenient for later disassembly and maintenance. If you need to replace the motor or fan module, you only need to loosen the corresponding screws to complete the module separation without disassembling the radiator as a whole.

Claims

1. A modular high-efficiency assembly mechanism for an automobile radiator fan, characterized in that: The invention comprises a fan blade module (1), a frame module (2) and a motor module (3), which constitute a modular assembly mechanism; the fan blade module (1) is connected to the rotating shaft (321) of the motor module (3); the frame module (2) comprises an annular frame body (23); an annular motor mounting hole (21) is provided at the center axis of the frame body (23); the motor module (3) and the hole wall of the motor mounting hole (21) are connected via a pre-positioning connection mechanism; the motor module (3) comprises a stator assembly (31), a rotor assembly (32) and the rotating shaft (321); The rotor assembly (32) includes a rotating shaft (321), stacked silicon steel sheets (322), a magnet block (323) and an elastic sheet (324); the rotating shaft (321) passes through the central axis hole of the stacked silicon steel sheets (322) and is fixed thereto; at least two placement grooves are uniformly opened along the circumferential direction on the stacked silicon steel sheets (322), and an elastic sheet (324) is provided on the inner bottom wall of each placement groove, and the tip of the elastic sheet (324) abuts against the peripheral wall of the magnet block (323), pressing the magnet block (323) into the placement groove.

2. The modular high-efficiency assembly mechanism for automobile radiator fan according to claim 1, characterized in that: The pre-positioning connection mechanism comprises at least two support plates (22) uniformly protruding along the circumferential direction on the hole wall of the motor mounting hole (21); a convex block (222) is also protruded on the support plate (22), and a first positioning groove (223) is formed between the convex block (222) and the end surface of the support plate (22); at least two mounting convex plates (33) are uniformly protruded along the circumferential direction on the outer edge of the motor module (3), and each mounting convex plate (33) is provided with a screw hole (331); the outer edge of the motor module (3) is also provided with a screw hole (331) corresponding to each mounting convex plate (33); The edge of the protrusion (222) matches the second positioning groove (34); the motor module (3) is embedded in the first positioning groove (223) of the support plate (22) through the mounting protrusion (33), and the edge of the protrusion (222) is embedded in the second positioning groove (34) of the motor module (3), thereby achieving pre-positioning with the frame module (2); the motor module (3) is fixed to the frame module (2) by passing a screw through the support plate (22) and screwing it into the screw hole (331) of the mounting protrusion (33).

3. The modular high-efficiency assembly mechanism for automobile radiator fan according to claim 2, characterized in that: The number of the supporting plates (22) of the frame module (2) is four, the number of the mounting protrusions (33) of the motor module (3) and the number of the second positioning grooves (34) on the outer edge of the motor module (3) are all four, and the supporting plates (22), the mounting protrusions (33) and the second positioning grooves (34) are uniformly distributed along the circumference.

4. The modular high-efficiency assembly mechanism for an automobile radiator fan according to claim 1, characterized in that: The elastic sheet (324) and the placement groove on the silicon steel sheet (322) are integrally formed by stamping, the tip of the elastic sheet (324) faces the opening direction of the placement groove, and the tip of the elastic sheet (324) is in interference contact with the peripheral wall of the magnet block (323).

5. The modular high-efficiency assembly mechanism for automobile radiator fan according to claim 1, characterized in that: The magnet block (323) is a square structure, wherein the dividing line is aligned with the diameter of the silicon steel sheet (322).

6. The modular high-efficiency assembly mechanism for automobile radiator fans according to claim 1, characterized in that: The rotating shaft (321) of the motor module (3) is fixed to the stacked silicon steel sheets (322) by interference fit or rivets. The stator assembly (31) comprises a stator core and a winding, and the winding is wound in the tooth slots of the stator core.

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