CN220754460U

CN220754460U - Magnetic ring structure of ceiling fan motor

Info

Publication number: CN220754460U
Application number: CN202322515404.1U
Authority: CN
Inventors: 李剑南
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-09
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses a magnetic ring structure of a ceiling fan motor, which comprises a magnetic ring, wherein iron hoops are arranged in the magnetic ring adaptation group, the number of the iron hoops is at least two, the iron hoops are provided with connectors, the iron hoops are arranged along the axial direction of the magnetic ring, and the connectors are distributed in a staggered manner in the circumferential direction. The magnetic ring structure is favorable for improving the magnetic conduction effect, and is stable and reliable in structure and convenient to assemble.

Description

Magnetic ring structure of ceiling fan motor

Technical Field

The utility model relates to the field of projection structures, in particular to a magnetic ring structure of a ceiling fan motor.

Background

At present, a ceiling fan motor comprises a rotor and a stator, wherein the rotor is positioned at the outer side of the stator, the rotor is provided with a magnetic ring, an iron hoop (or called an iron ring) is sleeved at the outer side of the magnetic ring, an interface (or called an opening) is arranged on the iron hoop, so that the iron hoop can be slightly opened and deformed to be sleeved on the magnetic ring, and an example of a ceiling fan outer rotor disclosed in China patent publication No. CN215733731U can be referred to; however, the magnetic conductive effect of the interface portion is poor, and even if the interface is welded, the magnetic conductive effect of the interface portion is poor because the welded structure is different from the hoop body, so that the magnetic ring structure in the prior art needs to be improved.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a magnetic ring structure of a ceiling fan motor, which is beneficial to improving the magnetic conduction effect.

The aim of the utility model is achieved by the following technical scheme.

The utility model discloses a magnetic ring structure of a ceiling fan motor, which comprises a magnetic ring, wherein iron hoops are arranged on the magnetic ring in a matching way, the number of the iron hoops is at least two, the iron hoops are formed with connectors, the iron hoops are arranged along the axial direction of the magnetic ring, and the connectors are distributed in a staggered way in the circumferential direction.

Preferably, the number of the iron hoops is two, and the interfaces of the two iron hoops are symmetrically arranged at two sides of the axis of the magnetic ring.

Preferably, the magnetic ring structure of the utility model further comprises two cover shells, wherein the cover shells are provided with sleeve parts and inner flange parts, the two cover shells are oppositely covered, the magnetic ring is arranged between the upper inner flange part and the lower inner flange part, and the iron hoop is adapted to be arranged in the corresponding sleeve parts.

Preferably, a positioning groove is formed on the inner flange part, and a convex tooth is formed on the end surface of the magnetic ring, and the convex tooth is adapted to be configured in the corresponding positioning groove.

Preferably, an inner end of the inner flange portion is formed with an outer rib provided over the entire circumference.

Compared with the prior art, the utility model has the beneficial effects that: the number of the hoops is at least two, the hoops are provided with the interfaces, the hoops are arranged along the axis direction of the magnetic ring, the interfaces are distributed in a circumferential dislocation way, and the formation of parts with extremely weak magnetic conduction effect is avoided.

Drawings

Fig. 1 is a schematic perspective view of a magnetic ring structure according to the present utility model.

Fig. 2 is a schematic perspective sectional view of the magnetic ring structure of the present utility model.

Fig. 3 is a schematic view of a partial structure at a in fig. 2.

Fig. 4 is an exploded view of the magnetic ring structure of the present utility model.

Fig. 5 is a schematic perspective view of a magnetic ring and iron hoop combination according to the present utility model.

Fig. 6 is a schematic perspective view of the cover shell of the present utility model.

Fig. 7 is a schematic top view of the magnetic ring and hoop combination of the present utility model.

The reference numerals indicate the magnetic ring 1; an arc-shaped magnetic block assembly 11; convex teeth 101; a tile seam 102; an iron hoop 2; an interface 201; a cover case 3; a sleeve portion 31; an inner flange portion 32; positioning grooves 3201; outer convex rib 321.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The magnetic ring structure of the ceiling fan motor of the utility model, as shown in fig. 1 to 4, comprises a magnetic ring 1, the magnetic ring 1 is provided with hoops 2 in a matching way, the hoops 2 are annular, as shown in fig. 3, the cross section of each hoop 2 is rectangular, so that the hoops 2 can be well attached to the outer wall of the magnetic ring 1, the hoops 2 play a role in magnetic conduction on the magnetic ring 1, the number of the hoops 2 is at least two, the hoops 2 are provided with interfaces 201, as shown in fig. 3, the hoops 2 are arranged along the axial direction of the magnetic ring 1, as shown in fig. 4 and 5, the interfaces 201 are distributed in a staggered way (the circumferential direction refers to the circumferential direction around the axial line of the magnetic ring 1), in other words, in any radial direction of the magnetic ring 1, the closed hoops 2 are solid, and the magnetic conduction structure is also understood to be formed by the combination of the hoops 2, so that the magnetic conduction effect is particularly weak, compared with the prior art, the magnetic conduction effect is improved. In the process of assembling the magnetic ring 1, when the iron hoops 2 are sleeved outside the magnetic ring 1, the interface 201 can be slightly elastically opened, so that the iron hoops 2 can be conveniently and rapidly sleeved outside the magnetic ring 1, and each iron hoop 2 can be well attached to the outer wall of the magnetic ring 1 through the elastic restoring force of the iron hoops 2, thereby being beneficial to improving the magnetic conduction effect. In some embodiments, after the iron hoop 2 is sleeved outside the magnetic ring 1, the interface 201 may be welded, and the welding part is cooled and contracted, so that the iron hoop 2 can also hug the magnetic ring 1.

Further, as shown in fig. 4 and 5, the number of hoops 2 is two, the interfaces 201 of the two hoops 2 are symmetrically arranged at two sides of the axis of the magnetic ring 1, even though each hoop 2 is only formed with one interface 201, the two interfaces 201 are distributed at 180 °, so that the magnetic conduction effect is beneficial to uniformity, and since the number of hoops 2 is only two, the generation of too many gaps of adjacent hoops 2 in the axial direction is avoided, the overall magnetic conduction effect of the hoops 2 is relatively beneficial to improvement, and the structure is relatively simplified, so that the assembly is convenient.

Further, as shown in fig. 1 to 4, the magnetic ring structure of the present utility model further includes two cover shells 3, the cover shells 3 are made of plastic, as shown in fig. 6, the cover shells 3 are formed with a sleeve portion 31 and an inner flange portion 32, the inner flange portion 32 is formed at one end of the sleeve portion 31, as shown in fig. 3 in combination with fig. 4, the two cover shells 3 are oppositely covered, the magnetic ring 1 is disposed between the upper and lower inner flange portions 32, the iron hoop 2 is adapted to be disposed in the corresponding sleeve portion 31, so that the two cover shells 3 support and position the magnetic ring 1 and the iron hoop 2, and the joint portions of the two cover shells 3 can be bonded or welded by ultrasonic waves. As shown in fig. 5, two or more hoops 2 are axially spread over the outer wall of the magnetic ring 1, and then the hoops 2 are sandwiched between the upper and lower inner flange portions 32 to avoid axial loosening of the hoops 2.

Further, as shown in fig. 6, the positioning groove 3201 is formed on the inner flange portion 32, as shown in fig. 4, the convex teeth 101 are formed on the end surface of the magnetic ring 1, as shown in fig. 1 and 2, the convex teeth 101 are adapted to be configured in the corresponding positioning groove 3201, so that the magnetic ring 1 is prevented from being circumferentially shifted in the two cover shells 3, and stable operation of the motor is facilitated. As shown in fig. 7, the ceiling fan motor is specifically a dc brushless motor, so the magnetic ring 1 is actually formed by splicing a plurality of (for example, eight) arc-shaped magnet pieces 11, a splicing seam 102 is formed between adjacent arc-shaped magnet pieces 11, and the convex teeth 101 are formed on the corresponding arc-shaped magnet pieces 11.

Further, as shown in fig. 3, the inner end of the inner flange portion 32 (that is, the end of the inner flange portion 32 relatively close to the axis of the magnetic ring 1) is formed with an outer convex rib 321, and the term "outer" in the term of "outer convex rib 321" means that the outer convex rib 321 of the cover case 3 located at the upper position is in an upward convex shape, and the outer convex rib 321 of the cover case 3 located at the lower position is in a downward convex shape, the heights of the outer convex protrusions of the two outer convex ribs 321 may be set differently, and the outer convex rib 321 is set over the whole circumference, so that the outer convex rib 321 enhances the structural rigidity and strength of the inner end of the inner flange portion 32, thereby facilitating the stable support of the positioning magnetic ring 1, and avoiding the interference of the outer convex rib 321 with the magnetic ring 1.

Claims

1. The utility model provides a magnetic ring structure of ceiling fan motor, includes magnetic ring (1), magnetic ring (1) adaptation group is equipped with hoop (2), its characterized in that: the number of the iron hoops (2) is at least two, the iron hoops (2) are provided with interfaces (201), the iron hoops (2) are arranged along the axis direction of the magnetic ring (1), and the interfaces (201) are distributed in a circumferential dislocation mode.

2. The magnet ring structure of a ceiling fan motor as set forth in claim 1, wherein: the number of the iron hoops (2) is two, and the interfaces (201) of the two iron hoops (2) are symmetrically arranged on two sides of the axis of the magnetic ring (1).

3. The magnet ring structure of a ceiling fan motor as set forth in claim 1, wherein: the novel magnetic ring is characterized by further comprising two cover shells (3), wherein the cover shells (3) are provided with sleeve parts (31) and inner flange parts (32), the two cover shells (3) are oppositely covered, the magnetic ring (1) is arranged between the upper flange part and the lower flange part (32), and the iron hoop (2) is adapted to be arranged in the corresponding sleeve parts (31).

4. A magnetic ring structure for a ceiling fan motor as defined in claim 3, wherein: a positioning groove (3201) is formed on the inner flange part (32), a convex tooth (101) is formed on the end face of the magnetic ring (1), and the convex tooth (101) is suitable for being arranged in the corresponding positioning groove (3201).

5. A magnetic ring structure for a ceiling fan motor as defined in claim 3, wherein: an outer convex rib (321) is formed at the inner end of the inner flange part (32), and the outer convex rib (321) is arranged on the whole circumference.