An insulating sleeve

Abstract

This utility model relates to an insulating sleeve, belonging to the technical field of ceiling fan motors, and includes: an insulating sleeve body installed in a ceiling fan motor; a boss, set on the insulating sleeve body for supporting the power cord; a bottom groove, formed on the insulating sleeve body and located on both sides of the boss, configured for cable ties to pass through; at least two retaining ribs, respectively set on both sides of the boss, for limiting the lateral displacement of the power cord; and an upper groove, formed on the two retaining ribs, the width of the upper groove being slightly larger than the width of the cable tie, and the distance from the bottom surface of the upper groove to the top surface of the boss being slightly smaller than the outer diameter of the power cord. This utility model forms a fixing platform through the boss and retaining ribs on the insulating sleeve body. The power cord is fixed to the top surface of the boss by passing through the bottom groove and upper groove in sequence with cable ties, completely isolating it from the enameled wire winding and avoiding the risk of softening or melting caused by heat conduction. The retaining ribs and the boss are integrally formed, eliminating the need for additional winding binding structures and meeting the space requirements of thin motors.

Description

Technical Field

[0001] This utility model relates to the field of ceiling fan motor technology, and in particular to an insulating sleeve. Background Technology

[0002] In ceiling fan motors, generally, one end of the power cord passes through the shaft, and the other end is connected to enameled wire. Because enameled wire is relatively fragile and easily broken, the power cord needs to be secured before being threaded into the shaft. Cable ties are commonly used to bind the power cord to the motor's teeth, which are wrapped with enameled wire. However, this method presents the following problems: 1. When the motor is running, the windings will heat up. If the temperature is too high, the power cord may soften or even melt, affecting the safety of the motor. 2. Tying enameled wire to the winding increases the height of the winding, which is not suitable for some motors with limited space. 3. If the iron core is thick, and the winding height is also considered, ordinary cable ties may not be long enough, requiring larger and longer cable ties, which further affects the height of the motor winding. 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 an insulating sleeve, which aims to solve the problems in the background art.

[0004] To achieve the aforementioned objectives of this utility model, the first aspect of this utility model provides an insulating sleeve, comprising: The insulating sleeve body installed in the ceiling fan motor; A boss is provided on the insulating sleeve body to support the power cord; The bottom groove is formed on the insulating sleeve body and located on both sides of the boss, configured to allow the cable tie to pass through; At least two retaining ribs are respectively provided on both sides of the boss to limit the lateral displacement of the power line; The upper groove is formed on the two retaining ribs. The width of the upper groove is slightly larger than the width of the cable tie, and the distance from the bottom surface of the upper groove to the top surface of the boss is slightly smaller than the outer diameter of the power cord. The power cord is fixed to the top surface of the boss by passing through the bottom groove and the upper groove in sequence with cable ties, thereby separating the power cord from the enameled wire winding.

[0005] Optionally, the insulating sleeve body is further provided with a side slot, which is located on the inner side of the insulating sleeve body and is configured to allow the lead wire to enter directly from the side.

[0006] Optionally, the insulating sleeve body is further provided with a wire-blocking boss and a small maze structure, which are arranged adjacent to the side slot to prevent the lead wire from coming out of the side slot.

[0007] Optionally, the insulating sleeve body is configured to mate with an asymmetrical opening on the stator core, the asymmetrical opening being used to prevent incorrect installation of the insulating sleeve.

[0008] Optionally, the baffle and the boss are integrally formed, and the height of the baffle is not lower than the height of the power cord.

[0009] Optionally, the insulating sleeve body has a split structure, including an upper insulating sleeve and a lower insulating sleeve, and the upper insulating sleeve and / or the lower insulating sleeve is provided with the side slot.

[0010] The beneficial effects of this utility model are: 1. This utility model discloses an insulating sleeve, in which a fixed platform is formed by a boss and a retaining rib on the insulating sleeve body. The power cord is fixed to the top surface of the boss by passing through the bottom groove and the upper groove in sequence with cable ties, completely isolating it from the enameled wire winding and avoiding the risk of softening or melting caused by heat conduction. The retaining rib and the boss are integrally formed, eliminating the need for an additional winding binding structure. The overall height of the winding is reduced compared to traditional solutions, meeting the space requirements of thin motors. The side slot allows the lead wire to pass directly through the side wall of the motor without passing through the inside of the stator core, shortening the wiring path.

[0011] 2. In this utility model, an insulating sleeve has an asymmetrical opening on the stator core that matches an asymmetrical flange on the outer wall of the insulating sleeve body, allowing insertion in only one direction to avoid incorrect insertion; and the wire-blocking boss is grooved on the side adjacent to the small maze structure, forming a mechanical lock through the trapezoidal blocking area and multi-level bending channels, which enhances the stability of the lead wire and prevents it from coming out. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an insulating sleeve according to the present invention; Figure 2 This utility model relates to an insulating sleeve. Figure 1 A magnified structural diagram of section A; Figure 3 This is a schematic diagram of an asymmetrical opening in an insulating sleeve according to the present invention; Figure 4 This is a schematic diagram of the upper and lower insulating sleeves of an insulating sleeve according to the present invention.

[0013] Explanation of reference numerals in the attached figures: 1. Insulating sleeve body; 101. Upper insulating sleeve; 102. Lower insulating sleeve; 11. Boss; 12. Bottom groove; 13. Retaining rib; 14. Upper groove; 21. Side slot; 31. Wire blocking boss; 32. Small maze structure; 4. Asymmetrical opening. 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

[0014] 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.

[0015] 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.

[0016] Reference Figures 1-4 One embodiment of this utility model provides an insulating sleeve, comprising: Insulating sleeve body 1 installed in ceiling fan motor; A boss 11 is provided on the insulating sleeve body 1 for supporting the power cord; The bottom groove 12 is formed on the insulating sleeve body 1 and is located on both sides of the boss 11, and is configured to allow the cable tie to pass through. At least two retaining ribs 13 are respectively disposed on both sides of the boss 11 to limit the lateral displacement of the power line; The upper groove 14 is formed on the two retaining ribs 13. The width of the upper groove 14 is slightly larger than the width of the cable tie, and the distance from the bottom surface of the upper groove 14 to the top surface of the boss 11 is slightly smaller than the outer diameter of the power cord. The power cord is fixed to the top surface of the boss 11 by passing through the bottom groove 12 and the upper groove 14 in sequence with cable ties, thereby separating the power cord from the enameled wire winding.

[0017] It should be noted that the insulating sleeve body 1 is an integrally injection-molded ring structure with a boss 11 on its top. The surface of the boss 11 is polished to reduce frictional loss of the power cord. Symmetrical bottom grooves 12 are formed on both sides of the boss 11. The bottom grooves 12 have a rectangular cross-section, with a width 1.1-1.3 times the width of the cable tie, ensuring that the cable tie can slide freely without getting stuck. A retaining rib 13 is provided on each side of the boss 11, with a height 0.8-0.9 times the outer diameter of the power cord. When the cable tie passes through the bottom groove 12 and is embedded in the upper groove 14, the cable tie adheres tightly to the power cord under elastic deformation. Simultaneously, through the synergistic effect of the boss 11 and the retaining ribs 13, the power cord is confined within the plane of the top surface of the boss 11, achieving physical isolation from the enameled wire winding. This effectively avoids the risk of power cord softening due to winding overheating, and the winding height is reduced compared to traditional structures, meeting the design requirements of compact motors.

[0018] In some embodiments, the insulating sleeve body 1 is further provided with a side slot 21, which is located on the inner side of the insulating sleeve body 1 and is configured to allow the lead wire to enter directly from the side.

[0019] It should be noted that a side slot 21 is opened along the axial direction on the inner side of the insulating sleeve body 1. The side slot 21 allows the lead wire to be directly connected to the insulating sleeve from the side wall of the motor without having to pass through the internal space of the stator core, which shortens the lead wire path and reduces the wiring complexity.

[0020] In some embodiments, the insulating sleeve body 1 is further provided with a wire-blocking boss 31 and a small maze structure 32, which are disposed adjacent to the side slot 21 to prevent the lead wire from coming out of the side slot 21.

[0021] It should be noted that a wire-blocking boss 31 is set in the area adjacent to the side slot 21. Its cross-section is trapezoidal, and its top contacts the surface of the lead wire to form the first physical barrier. When the lead wire passes through the side slot 21, it needs to pass through multiple bends in the small maze structure 32 in sequence, forming a mechanical locking effect.

[0022] In some embodiments, the insulating sleeve body 1 is configured to mate with an asymmetrical opening 4 on the stator core, the asymmetrical opening being used to prevent incorrect installation of the insulating sleeve.

[0023] It should be noted that the stator core opening 4 adopts an asymmetrical D-shaped structure, and the corresponding position on the outer wall of the insulating sleeve body 1 is provided with a matching asymmetrical flange. During installation, insertion is only allowed in one direction, which significantly improves the assembly reliability.

[0024] In some embodiments, the baffle 13 is integrally formed with the boss 11, and the height of the baffle 13 is not lower than the height of the power cord.

[0025] It should be noted that the retaining rib 13 and the boss 11 are integrally molded using a common mold injection molding process, and the material is high-temperature resistant silicone rubber.

[0026] In some embodiments, the insulating sleeve body 1 is a split structure, including an upper insulating sleeve 101 and a lower insulating sleeve 102, wherein the upper insulating sleeve 101 and / or the lower insulating sleeve 102 are provided with the side slot 21.

[0027] It should be noted that the insulating sleeve body 1 is divided into an upper insulating sleeve 101 and a lower insulating sleeve 102, which are spliced ​​by snap-fit, a technique commonly used in existing technologies.

[0028] In practical applications, the insulating sleeve body 1 is first installed into the stator core of the motor, ensuring that the asymmetrical flange on its outer wall is precisely matched with the asymmetrical opening 4 on the stator core to prevent incorrect installation. Then, the power cord is inserted into the bottom grooves 12 on both sides of the boss 11 at the top of the insulating sleeve body 1. The wedge-shaped guide structure of the baffle 13 is used to center the power cord, and then the cable tie is used to pass through the bottom groove 12 and the upper groove 14 in sequence for fixation. At this time, the cable tie is tightly attached to the surface of the power cord under the elastic clamping action, realizing the physical isolation between the power cord and the enameled wire winding. Next, the lead wire is directly inserted into the side slot 21 inside the insulating sleeve body 1. The lead wire needs to pass through the trapezoidal blocking area formed by the wire blocking boss 31 and the multi-level bending channel of the small maze structure 32 in sequence, using the mechanical locking effect to prevent the lead wire from coming out.

[0029] 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. An insulating sleeve, characterized in that, include: Insulating sleeve body (1) installed in ceiling fan motor; A boss (11) is provided on the insulating sleeve body (1) for supporting the power cord; The bottom groove (12) is formed on the insulating sleeve body (1) and located on both sides of the boss (11), and is configured to allow the cable tie to pass through; At least two baffles (13) are respectively provided on both sides of the boss (11) to limit the lateral displacement of the power line; The upper groove (14) is formed on the two retaining ribs (13); The power cord is fixed to the top surface of the boss (11) by passing through the bottom groove (12) and the upper groove (14) in sequence with cable ties, thereby separating the power cord from the enameled wire winding.

2. An insulating sleeve according to claim 1, characterized in that, The insulating sleeve body (1) is also provided with a side slot (21), which is located on the inner side of the insulating sleeve body (1) and is configured to allow the lead wire to enter directly from the side.

3. An insulating sleeve according to claim 2, characterized in that, The insulating sleeve body (1) is also provided with a wire-blocking boss (31) and a small maze structure (32). The wire-blocking boss (31) and the small maze structure (32) are arranged adjacent to the side slot (21) to prevent the lead wire from coming out of the side slot (21).

4. An insulating sleeve according to claim 1, characterized in that, The insulating sleeve body (1) is configured to mate with an asymmetrical opening (4) on the stator core, the asymmetrical opening being used to prevent incorrect installation of the insulating sleeve.

5. An insulating sleeve according to claim 1, characterized in that, The baffle (13) and the boss (11) are integrally formed, and the height of the baffle (13) is not lower than the height of the power line.

6. An insulating sleeve according to claim 2, characterized in that, The insulating sleeve body (1) is a split structure, including an upper insulating sleeve (101) and a lower insulating sleeve (102), and the upper insulating sleeve (101) and / or the lower insulating sleeve (102) are provided with the side slot (21).

Images