Ceiling fan motor end cap

Abstract

The utility model relates to a ceiling fan motor end cover belongs to ceiling fan motor technical field, including end cover main part, the end face of end cover main part is provided with a plurality of ventilation holes, the periphery of ventilation hole is equipped with the boss, the end face of end cover main part still is provided with a plurality of ribs, the height of rib is higher than boss, at least part the rib is equipped with the positioning recess for with the positioning boss on a cover plate cooperation and is opened, the lower portion of positioning recess is equipped with the thread hole for fastener passes through to fix the cover plate, the utility model forms the first physical barrier through the boss of ventilation hole periphery, effectively blocks the outside impurity and directly enters the motor inside, the cover plate cooperates through the positioning boss and the positioning recess on end cover main part, and is fixed through the screw, further covers the ventilation hole entrance, forms the double -layer sealing structure, and the risk of impurity invasion is reduced significantly. The even distribution design of ventilation hole ensures that hot air is discharged from multiple directions, avoiding local overheating.

Description

Technical Field

[0001] This utility model relates to the field of ceiling fan motor technology, and in particular to a ceiling fan motor end cover. Background Technology

[0002] During long-term operation, the design of the end cover structure of a DC brushless ceiling fan motor directly affects its heat dissipation and dust prevention capabilities. Traditional motor end covers typically lack ventilation holes, primarily because dust, particles, and other impurities from the external environment can enter the motor through these holes, gradually accumulating on the magnet surface. Over time, this accumulation can lead to increased motor noise or even seizure. However, the lack of ventilation holes limits the motor's heat dissipation capacity, preventing the effective dissipation of heat generated during operation. This results in excessively high motor temperatures, affecting performance stability and lifespan. Furthermore, in existing technologies, adding ventilation holes to the end cover to enhance heat dissipation sacrifices dust prevention, making it difficult to achieve a synergistic optimization of dust prevention and heat dissipation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a ceiling fan motor end cover, which aims to solve the problems in the background art.

[0004] In order to achieve the above-mentioned utility model objectives, the first aspect of this utility model proposes a ceiling fan motor end cover, including an end cover body, wherein a plurality of ventilation holes are provided on the end face of the end cover body, and a boss is provided around the ventilation holes; The end face of the end cap body is also provided with several ribs, the height of which is higher than that of the boss. At least a portion of the ribs are provided with positioning grooves for engaging with positioning bosses on a cover plate, and below the positioning grooves are threaded holes for fasteners to pass through to fix the cover plate.

[0005] Optionally, the number of ribs is the same as the number of bosses.

[0006] Optionally, the positioning groove is provided on a portion of the rib.

[0007] Optionally, the positioning groove is configured to form a clearance fit or an interference fit with the positioning boss of the cover plate.

[0008] Optionally, the ventilation holes are evenly distributed on the end face of the end cap body.

[0009] Optionally, the ventilation opening may be circular, square, or polygonal in shape.

[0010] Optionally, the rib and the boss together form a mounting plane, which is configured to form an air duct gap with the cover plate.

[0011] The beneficial effects of this utility model are: 1. This utility model discloses a ceiling fan motor end cover. A raised platform surrounding the ventilation holes forms the first physical barrier, effectively preventing external impurities from directly entering the motor. The cover plate, through a positioning raised platform and a positioning groove on the end cover body, is fixed with screws, further covering the ventilation hole inlet, forming a double-sealed structure that significantly reduces the risk of impurity intrusion. The evenly distributed ventilation holes ensure hot air is exhausted from multiple directions, avoiding localized overheating. A pre-reserved airflow gap between the mounting plane formed by the ribs and raised platforms and the cover plate creates a guiding channel, efficiently guiding hot air out, thereby reducing motor temperature rise and improving operational stability.

[0012] 2. The ceiling fan motor end cover of this utility model has a rib that is higher than the boss, which not only enhances the deformation resistance of the end cover body, but also provides a stable support platform for the cover plate; the clearance fit or interference fit design between the positioning groove and the positioning boss ensures the accuracy and firmness of the cover plate installation and prevents it from loosening and falling off due to vibration or external force. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a ceiling fan motor end cover according to the present invention; Figure 2 This is a top view schematic diagram of a ceiling fan motor end cover according to the present invention; Figure 3 This utility model relates to a ceiling fan motor end cover. Figure 2 Schematic diagram of the CC section; Figure 4 This is a schematic cross-sectional view of the installation of the end cover body and the cover plate of the ceiling fan motor end cover according to the present invention.

[0014] Explanation of reference numerals in the attached figures: 1. End cap body; 11. Ventilation hole; 12. Boss; 13. Rib; 14. Positioning groove; 2. Cover plate; 21. Positioning boss.

[0015] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0016] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Reference Figures 1-4 An embodiment of the present invention provides an embodiment of a ceiling fan motor end cover, including an end cover body 1, wherein a plurality of ventilation holes 11 are provided on the end face of the end cover body 1, and a boss 12 is provided around the ventilation holes 11. The end face of the end cap body 1 is also provided with a plurality of ribs 13, the height of which is higher than that of the boss 12; At least a portion of the ribs 13 are provided with positioning grooves 14 for engaging with positioning bosses 21 on a cover plate 2, and below the positioning grooves 14 are threaded holes for fasteners to pass through to fix the cover plate 2.

[0019] It should be noted that a boss 12 is provided around the ventilation hole 11. The boss 12 is used to form a local protrusion structure to prevent impurities from directly entering the motor through the ventilation hole 11. Several ribs 13 are also provided on the end face of the end cover body 1. The height of the ribs 13 is higher than the boss 12. The vertical extension structure of the ribs 13 enhances the mechanical strength of the end cover body 1 and provides support for subsequent installation. At least some of the ribs 13 have positioning grooves 14, which cooperate with the positioning bosses 21 on the cover plate 2 to achieve precise positioning of the cover plate 2. A threaded hole is provided below the positioning groove 14 for fasteners such as screws to pass through and fix the cover plate 2.

[0020] The boss 12 acts as a shield, reducing the risk of external impurities directly entering the motor while retaining the heat dissipation function of the ventilation hole 11, thus balancing dust prevention and heat dissipation requirements. The rib 13 is higher than the boss 12, enhancing the deformation resistance of the end cover body 1 and providing a stable support platform for the installation of the cover plate 2, preventing it from falling off due to vibration or external force. The positioning groove 14 engages with the positioning boss 21 of the cover plate 2, enabling quick alignment and installation of the cover plate 2; the threaded hole design ensures the tightness of the cover plate 2, preventing loosening and sealing failure.

[0021] In some embodiments, the number of ribs 13 is the same as the number of bosses 12.

[0022] It should be noted that the number of ribs 13 is the same as the number of bosses 12, and the ribs 13 are evenly distributed around the ventilation holes 11. For example, when the end cap body 1 is provided with three ventilation holes 11, three bosses 12 and three ribs 13 are provided accordingly. The number of ribs 13 is the same as the number of bosses 12 to ensure that the end cap body 1 is subjected to uniform stress and to avoid cracking or deformation due to local stress concentration.

[0023] In some embodiments, the positioning groove 14 is disposed on a portion of the rib 13.

[0024] It should be noted that reducing the number of machining operations for the positioning groove 14 reduces manufacturing costs while ensuring the installation stability of the cover plate 2.

[0025] In some embodiments, the positioning groove 14 is configured to form a clearance fit or an interference fit with the positioning boss 21 of the cover plate 2.

[0026] It should be noted that the positioning groove 14 and the positioning boss 21 of the cover plate 2 can be either a clearance fit or an interference fit. A clearance fit allows for some tolerance during installation of the cover plate 2, suitable for tolerance control in mass production. A clearance fit is suitable for scenarios with lower assembly precision requirements, while an interference fit is suitable for scenarios requiring higher sealing performance, meeting different application needs.

[0027] In some embodiments, the ventilation holes 11 are evenly distributed on the end face of the end cap body 1.

[0028] It should be noted that the evenly distributed ventilation holes 11 ensure that hot air is exhausted from multiple directions during motor operation, avoiding localized overheating and extending motor life. The uniform layout reduces airflow turbulence and lowers motor operating noise.

[0029] In some embodiments, the ventilation hole 11 is circular, square, or polygonal in shape.

[0030] It should be noted that the shape of the ventilation hole 11 can be circular, square, or polygonal, such as hexagonal. Different shapes of ventilation holes 11 can be adapted to different manufacturing processes such as casting and stamping, reducing production difficulty. Polygonal ventilation holes 11 can guide airflow direction through edge design, enhancing heat dissipation.

[0031] In some embodiments, the rib 13 and the boss 12 together form a mounting plane, which is configured to form an air duct gap with the cover plate 2.

[0032] It should be noted that the rib 13 and the boss 12 together form a mounting plane. A gap is reserved between the mounting plane and the cover plate 2 for hot air circulation. The gap between the mounting plane and the cover plate 2 forms a guide channel, guiding hot air out of the ventilation hole 11 and improving heat dissipation efficiency.

[0033] In practical application, the end cover body 1 is first installed at the designated position on the ceiling fan motor. The ventilation holes 11 on the end face of the end cover body 1 are evenly distributed to ensure hot air can be exhausted from multiple directions, reducing motor temperature rise. The protrusions 12 surrounding the ventilation holes 11 form a first layer of protection through a partially raised structure, preventing external impurities from directly entering the motor. Then, the positioning protrusions 21 of the cover plate 2 are aligned with the positioning grooves 14 set in the upper ribs 13 of the end cover body 1. The precise positioning of the cover plate 2 is achieved through a clearance fit or interference fit between the positioning grooves 14 and the positioning protrusions 21. After installation, a gap is formed between the cover plate 2, the ribs 13, and the protrusions 12 forming the mounting plane. Hot air can be exhausted through this gap in conjunction with the ventilation holes 11. Simultaneously, the surface of the cover plate 2 covers the inlet of the ventilation holes 11, further preventing dust, particles, and other impurities from entering the motor. Finally, the cover plate 2 is fastened to the end cover body 1 with screws passing through the threaded holes below the positioning grooves 14, ensuring structural stability. This ultimately achieves the dual effects of dust prevention and heat dissipation, extending motor life and improving operational reliability.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A ceiling fan motor end cover, comprising an end cover body (1), wherein the end face of the end cover body (1) is provided with a plurality of ventilation holes (11), characterized in that, The ventilation hole (11) is provided with a boss (12) around its periphery. The end face of the end cap body (1) is also provided with a number of ribs (13), and the height of the ribs (13) is higher than that of the boss (12). At least a portion of the ribs (13) are provided with positioning grooves (14) for engaging with positioning bosses (21) on a cover plate (2), and below the positioning grooves (14) are threaded holes for fasteners to pass through to fix the cover plate (2).

2. The ceiling fan motor end cover according to claim 1, characterized in that, The number of the ribs (13) is the same as the number of the bosses (12).

3. The ceiling fan motor end cover according to claim 1, characterized in that, The positioning groove (14) is provided on a portion of the rib (13).

4. The ceiling fan motor end cover according to claim 1, characterized in that, The positioning groove (14) is configured to form a clearance fit or an interference fit with the positioning boss (21) of the cover plate (2).

5. A ceiling fan motor end cover according to claim 1, characterized in that, The ventilation holes (11) are evenly distributed on the end face of the end cap body (1).

6. The ceiling fan motor end cover according to claim 1, characterized in that, The ventilation hole (11) is circular, square or polygonal in shape.

7. A ceiling fan motor end cover according to claim 1, characterized in that, The rib (13) and the boss (12) together form an installation plane, which is configured to form an air duct gap with the cover plate (2).

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