Wire pressing box structure for motor

Abstract

The utility model discloses a kind of line pressing box structures for motor, be set in motor stator and central shaft rod, motor stator is provided with line pressing box;Power cord is worn in power cord perforation;Line pressing box includes box body, the end of the bottom surface of box body has at least two buckle protruding posts and the end surface of box body is provided with wiring hole position;The end of power cord and the enameled wire end of motor stator immersion tin fusion joint and respectively insert card in wiring hole position;The middle part of motor stator is provided with insert card positioning hole;Buckle protruding post is positioned in insert card positioning hole, and power cord is between the bottom surface of line pressing box and motor stator and is clamped by line pressing box and motor stator limit location.The structure of the utility model is reasonable, effectively and quickly inserts card limit location at the immersion tin connecting place of power cord and enameled wire, guarantees the insulation isolation performance between power supply phase line, is favorable to promote the connection stability of power cord and line pressing box, prevent loosening or falling off, line pressing box disassembly is more convenient, reduces assembly process and processing.

Description

Technical Field

[0001] This utility model belongs to the field of wire clamping box technology, specifically relating to a wire clamping box structure for motors. Background Technology

[0002] The ceiling fan motor is an important component of a ceiling fan or ceiling fan light. When using it, the power cord needs to be connected to the stator coil of the ceiling fan motor. The conventional method is to directly wrap the power cord with the enameled wire. The main steps are tinning, heat shrink tubing, yellow wax tubing, and finally binding with cable ties.

[0003] The main purpose of tinning and welding is to fuse the power cord and enameled wire together to form a conductive connection. Applying heat shrink tubing is to isolate the three fused power cords from each other, forming insulation. Applying yellow wax tubing is to enhance the electrical strength of the insulation between the three power cords, ensuring a withstand voltage of 1500V even in harsh environments. The three components must not come into contact with each other and must insulate different phase wires from each other. The binding strap is used to securely fix the power cord in the corresponding position shown in the picture.

[0004] Although it can achieve the connection and positioning of the power supply line and the enameled wire, its contact method is not only complicated, but also requires a variety of different processes and materials, which will greatly increase the assembly cost and reduce the assembly efficiency. It is also not conducive to disassembly and maintenance operations, thus limiting its applicability. Utility Model Content

[0005] The purpose of this utility model is to provide a motor wire clamping box structure that is reasonably designed and easy to assemble.

[0006] The technical solution to achieve the purpose of this utility model is a wire clamping box structure for an electric motor, which is installed at the stator and central shaft of the motor, including a wire clamping box;

[0007] A power supply cable hole is provided on the side wall of the central shaft, and the power supply cable passes through the power supply cable hole.

[0008] The wire clamping box includes a box body, at least two snap-fit ​​protrusions are integrally formed on the bottom surface of the box body near the central shaft, and a number of wire connection holes are provided on the end face of the box body away from the central shaft.

[0009] The end of the power cord is tin-welded to the end of the enameled wire of the motor stator and inserted into the connection hole respectively.

[0010] The motor stator is provided with a card insertion positioning hole in the middle;

[0011] The wire clamp is attached to the motor stator, and the buckle protrusion is positioned in the insertion positioning hole. The power cord is located between the bottom surface of the wire clamp and the motor stator and is clamped and limited by the wire clamp and the motor stator.

[0012] A further preferred embodiment is that the connecting hole is a conical hole with a large diameter at the opening and a small diameter at the inner end.

[0013] A further preferred embodiment is that the wire clamp box is an insulated plastic box.

[0014] A further preferred embodiment is that the buckle protrusion and the card insertion positioning hole are interference-fitted.

[0015] A further preferred embodiment is that the number of connecting holes is three.

[0016] A further preferred embodiment is that the number of the buckle protrusions is two, and a pressure groove is provided between the two buckle protrusions;

[0017] The power cord is located within the wire clamping groove.

[0018] This utility model has positive effects: Its structure is rationally designed, featuring a wire clamping box on the motor stator with snap-fit ​​protrusions and connecting holes. This not only effectively and quickly clamps and limits the connection between the power cord and the tinned wire, improving assembly convenience, but also ensures insulation performance between the power phase wires. Furthermore, the snap-fit ​​protrusions and positioning holes clamp and limit the power cord when the wire clamping box is inserted into the motor stator, improving the stability of the connection between the power cord and the wire clamping box, preventing loosening or detachment, and preventing wire damage. The wire clamping box is also easier to install and remove, providing stable and effective use, reducing assembly steps and processing costs, and improving production yield. It is highly applicable. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the specific structure of the medium-voltage junction box of this utility model;

[0023] Figure 4 This is a cross-sectional view of the medium-voltage junction box of this utility model.

[0024] Reference numerals: 1. Motor stator; 2. Central shaft; 3. Wire clamp box; 31. Box body; 32. Snap-on protrusion; 33. Wiring hole; 4. Power cord; 5. Insert card positioning hole; 6. Wire clamp groove. Detailed Implementation

[0025] 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.

[0026] Example

[0027] See Figures 1 to 4 As shown, a motor wiring box structure includes a motor stator 1 and a central shaft 2, and a wiring box 3. A power supply cable hole is provided on the side wall of the central shaft, and a power supply cable 4 passes through the power supply cable hole. In this embodiment, the motor stator and central shaft are conventional structures of the prior art, simply applied, while the wiring box is an insulated plastic box. This ensures insulation performance. The plastic wiring box is made of high-temperature resistant plastic material, which increases the insulation withstand voltage strength and the structural strength of the fixed power supply cable while also having high-temperature resistance. Furthermore, the scratch resistance of plastic is far greater than that of ordinary heat shrink tubing and wax tubing. Therefore, using a plastic wiring box can achieve all the functions of the above-mentioned traditional ceiling fan motor wiring method structure. At the same time, it more effectively prevents the burrs generated after the power supply cable and enameled wire are tinned and soldered, which could scratch the insulation sleeve and produce defective products. It also makes the power supply cable less prone to detachment during pulling compared to traditional wiring methods, thus preventing defective products.

[0028] Furthermore, during production and assembly, it can reduce the number of processes and materials, reduce the defect rate caused by human error, and improve processing efficiency.

[0029] In this embodiment, the wire clamping box includes a box body 31. At least two snap-fit ​​protrusions 32 are integrally formed on the bottom surface of the box body near the central shaft, and a plurality of connection holes 33 are provided on the end face of the box body away from the central shaft. During assembly, the end of the power cord is tin-welded to the end of the enameled wire of the motor stator and inserted into the connection holes respectively. Tin-welding the power cord and the end of the enameled wire is a common structure in the prior art, as described in the background art, and therefore is not described in detail. In actual application, the connection holes can be circular holes, square holes, or holes of other shapes.

[0030] Meanwhile, the motor stator has a slotted positioning hole 5 in the middle. During assembly, the wire clamp is attached to the motor stator, and the snap-fit ​​protrusion is positioned in the slotted positioning hole. The power cord is located between the bottom surface of the wire clamp and the motor stator and is clamped and limited by the wire clamp. The ends of the power cord and the enameled wire are inserted into the connection holes, and the power cord is clamped between the wire clamp and the motor stator after assembly, which can prevent the power cord from being pulled or falling off. Furthermore, the isolation between adjacent connection holes also helps to improve the isolation function. To improve the connection stability of the wire clamp, the snap-fit ​​protrusion and the slotted positioning hole are interference-fitted.

[0031] In this embodiment, the connecting hole is a conical hole with a large diameter at the opening and a small diameter at the inner end. This structure facilitates the insertion and connection of the power cord and enameled wire, and the wire gradually compresses as it is inserted, ensuring a stable and reliable connection.

[0032] Furthermore, in this embodiment, the number of connecting holes is three. Simultaneously, the number of snap-fit ​​protrusions is two, and a wire-pressing groove 6 is provided between the two snap-fit ​​protrusions; the power cord is situated within the wire-pressing groove. The wire-pressing groove is primarily used for placing and positioning the power cord, improving connection stability and reliability.

[0033] Its assembly principle is as follows: the power cord and the enameled wire are tinned and fused together, and then the tinned and fused joint is inserted into the connection hole. Through the conical hole, when the connection between the power cord and the enameled wire is placed, it will be gradually squeezed as the insertion depth increases, which improves the firmness of the installation. Since the three connection holes are independent of each other, they can also limit the fusion point and provide insulation.

[0034] Next, the buckle protrusion of the wire clamp is inserted into the insertion positioning hole on the iron core of the motor stator to achieve an interference fit, so that the wire clamp is firmly fixed on the motor stator. After assembly, the power cord will be clamped between the wire clamp and the motor stator, which will fix the power cord and make it less likely to come out, thus improving the reliability of the assembly.

[0035] This utility model has positive effects: Its structure is rationally designed, featuring a wire clamping box on the motor stator with snap-fit ​​protrusions and connecting holes. This not only effectively and quickly clamps and limits the connection between the power cord and the tinned wire, improving assembly convenience, but also ensures insulation performance between the power phase wires. Furthermore, the snap-fit ​​protrusions and positioning holes clamp and limit the power cord when the wire clamping box is inserted into the motor stator, improving the stability of the connection between the power cord and the wire clamping box, preventing loosening or detachment, and preventing wire damage. The wire clamping box is also easier to install and remove, providing stable and effective use, reducing assembly steps and processing costs, and improving production yield. It is highly applicable.

[0036] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A wire clamping box structure for an electric motor, disposed at the stator and central shaft of the motor, characterized in that: Including wire clamps; A power cord hole is provided on the side wall of the central shaft, and the power cord passes through the power cord hole. The wire clamping box includes a box body, at least two snap-fit ​​protrusions are integrally formed on the bottom surface of the box body near the central shaft, and a number of wire connection holes are provided on the end face of the box body away from the central shaft. The end of the power cord is tin-welded to the end of the enameled wire of the motor stator and inserted into the connection hole respectively. The motor stator is provided with a card insertion positioning hole in the middle; The wire clamp is attached to the motor stator, and the buckle protrusion is positioned in the insertion positioning hole. The power cord is located between the bottom surface of the wire clamp and the motor stator and is clamped and limited by the wire clamp and the motor stator.

2. The wire clamping box structure for a motor according to claim 1, characterized in that: The connecting hole is a conical hole with a large diameter at the opening and a small diameter at the inner end.

3. The wire clamping box structure for a motor according to claim 1, characterized in that: The wire clamp box is an insulated plastic box.

4. The wire clamping box structure for a motor according to claim 1, characterized in that: The buckle protrusion is interference-fitted with the card insertion positioning hole.

5. The wire clamping box structure for a motor according to claim 1, characterized in that: The number of connecting holes is three.

6. The wire clamping box structure for a motor according to claim 1, characterized in that: The number of the buckle protrusions is two, and a pressure groove is provided between the two buckle protrusions; The power cord is located within the wire clamping groove.

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