Wiring terminal for winding of external rotor motor

Abstract

The utility model provides an external rotor motor winding wiring terminal, and belongs to the technical field of motors. The wiring terminal solves the problem that an existing wiring terminal is wide. The external rotor motor winding wiring terminal comprises a sheet-shaped body, the bottom wall of the body extends downwards to form integrally-formed connecting strips, and the number of the connecting strips is two and the connecting strips are symmetrically arranged along the center of the body; the two adjacent side faces of the two connecting strips are each composed of a vertical plane and a first inclined face which are continuously distributed from top to bottom, the distance between the two first inclined faces is gradually increased from top to bottom, and a blade part is formed at the joint of the vertical plane and the first inclined face on the same connecting strip. Strip-shaped grooves are formed in the upper ends of the two connecting strips in the thickness direction of the body in a penetrating mode, the lower ends of the strip-shaped grooves are closed, the upper ends of the two strip-shaped grooves extend to the bottom wall of the body, and under the action of the strip-shaped grooves, the two adjacent sides of the two connecting strips are disconnected from the body. The outer rotor motor winding wiring terminal is small in width.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors and relates to an outer rotor motor, in particular to an outer rotor motor winding connection terminal. Background Art

[0002] At present, in the outer rotor motor winding, the enameled wire and the terminal are usually electrically connected by welding, but one winding involves multiple enameled wires and terminal connections, the overall operation steps are relatively large, and it is inconvenient to assemble.

[0003] In this regard, people have realized the shortcomings and made improvements. For example, a motor terminal disclosed in the Chinese Patent Library (application number: 200720188744.6) includes a power plug, a crimping fixing structure for fixing the terminal to the motor wire frame on the bottom surface of the plug, and a connecting structure on the side of the plug that can be wound with enameled wire and can pierce the paint when the two sides are pressed inward to make the enameled wire body and the terminal conductive.

[0004] In the above-mentioned terminal, the plug uses the connection structure to pierce the enameled wire to achieve direct electrical connection between the plug and the enameled wire, which is effective and convenient to operate. However, the connection structure is arranged on the side of the plug, resulting in a wide terminal and being unable to adapt to some smaller outer rotors. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a small-width outer rotor motor winding connection terminal.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an outer rotor motor winding terminal, comprising a sheet-shaped body, characterized in that a connecting strip is integrally formed and extended downward from the bottom wall of the body, and there are two connecting strips symmetrically arranged along the center of the body; the two adjacent side surfaces of the two connecting strips are composed of a vertical plane and an inclined plane one continuously distributed from top to bottom, the distance between the two inclined planes one gradually increases from top to bottom, and a blade portion is formed at the connection between the vertical plane and the inclined plane one on the same connecting strip; the upper ends of the two connecting strips are both provided with a strip groove penetrating along the thickness direction of the body, the lower ends of the strip grooves are closed, the upper ends of the two strip grooves are both extended to the bottom wall of the body, and under the action of the strip grooves, the adjacent sides of the two connecting strips are disconnected from the body.

[0007] In actual products, a slot matching the terminal body is provided on the insulating end of the winding; during installation, the enameled wire is passed through the slot and pressed against the bottom wall of the slot. As the terminal is gradually inserted into the slot, the enameled wire is gradually inserted between the two connecting strips and supports the two connecting strips outward until the blade contacts the enameled wire and pierces it, so that the enameled wire and the terminal are directly electrically connected, replacing the traditional welding electrical connection between the enameled wire and the terminal, and has the advantages of simple structure and easy assembly.

[0008] The blade for piercing the enameled wire is formed on the connecting strip, and both the connecting strip and the body are distributed along the length direction of the body to effectively reduce the width of the terminal. The overall structure is not only compact, but also occupies little space to adapt to more sizes of outer rotor motors.

[0009] In the above-mentioned outer rotor motor winding terminal, the above-mentioned strip groove is arranged obliquely, and the inclination directions of the strip groove and the inclined surface are parallel, so that the connecting strip is squeezed by the enameled wire to expand outward more easily, which is beneficial to the installation of the terminal.

[0010] In the above-mentioned outer rotor motor winding connection terminal, the length of the strip groove is greater than the length of the vertical plane, so that the connecting strip can be more easily deformed outward.

[0011] In the above-mentioned outer rotor motor winding terminal, a straight hole is opened through the middle of the bottom wall of the body along the thickness direction of the body, and two connecting strips are symmetrically arranged along the center of the straight hole. The straight hole is used for stamping positioning, so that the two grooves can be accurately stamped and formed at one time, which is convenient for processing and production.

[0012] In the above-mentioned outer rotor motor winding connection terminal, the cross section of the straight hole is in an arc shape to ensure the strength of the bottom wall of the connection terminal.

[0013] In the above-mentioned outer rotor motor winding terminal, barbs are formed on both sides of the width of the lower end of the body, and the two barbs are symmetrically arranged along the center of the body. When in use, a notch matching the barb is also provided on the inner wall of the slot, and the barb is buckled in the notch to further position the terminal, so that it forms a more stable electrical connection with the enameled wire, ensuring stable operation of the motor.

[0014] In the above-mentioned outer rotor motor winding terminal, the vertical cross-section of the hook portion is roughly V-shaped, and the hook portion is surrounded by side surfaces and two end surfaces. The side surface of the hook portion is composed of a horizontal surface and a second inclined surface continuously distributed from top to bottom, and the distance between the two inclined surfaces gradually decreases from top to bottom, so that the hook portion can hook the above-mentioned recess more stably, thereby enhancing the positioning strength and stability of the terminal.

[0015] In the above-mentioned outer rotor motor winding terminal, the two lower sides of the two inclined surfaces extend to the two connecting strips respectively, that is, the barb portion is arranged close to the connecting strip, thereby enhancing the positioning strength of the connection between the terminal and the enameled wire, and further ensuring the stable operation of the motor.

[0016] In the above-mentioned outer rotor motor winding connection terminal, the bottom surface of the connecting strip is in an arc shape.

[0017] Compared with the prior art, the external rotor motor winding terminal has the following advantages:

[0018] 1. The blade for piercing the enameled wire is formed on the connecting strip, and the connecting strip and the body are distributed along the length direction of the body to effectively reduce the width of the terminal. The overall structure is not only compact, but also occupies little space to adapt to more sizes of outer rotor motors.

[0019] 2. Barbed parts are formed on both sides of the width of the lower end of the body, and the two barbed parts are symmetrically arranged along the center of the body. When in use, a notch matching the barbed part is provided on the inner wall of the slot for installing the body, and the barbed part is buckled in the notch to further position the terminal, so that it forms a more stable electrical connection with the enameled wire, ensuring stable operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the winding terminal of the external rotor motor.

[0021] Figure 2 It is a front view schematic diagram of the winding terminal of the external rotor motor.

[0022] Figure 3 This is the installation diagram of the winding terminal of the external rotor motor.

[0023] In the figure, 1, main body; 1a, straight hole; 2, connecting strip; 2a, vertical plane; 2b, inclined plane 1; 2c, blade; 2d, strip groove; 3, barb; 3a, horizontal plane; 3b, inclined plane 2; 4, enameled wire. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1 As shown, the outer rotor motor winding terminal is an integrated structure and is made of conductive material, and the conductive material can be copper, aluminum, copper alloy, aluminum alloy, etc.

[0026] Specifically,

[0027] The terminal block includes a sheet-shaped body 1, a bottom wall of the body 1 extending downward to form an integrally formed connecting strip 2, and the length of the connecting strip 2 extends along the length direction of the body 1. Figure 1 and Figure 2As shown, there are two connecting strips 2 and they are symmetrically arranged along the center of the main body 1; the two adjacent side surfaces of the two connecting strips 2 are composed of a vertical plane 2a and an inclined plane 2b continuously distributed from top to bottom, wherein the distance between the two inclined planes 2b gradually increases from top to bottom, and a cutting edge 2c is formed at the connection between the vertical plane 2a and the inclined plane 2b on the same connecting strip 2; the upper ends of the two connecting strips 2 are penetrated by a strip groove 2d along the thickness direction of the main body 1, and the length of the strip groove 2d extends from top to bottom, wherein the lower end of the strip groove 2d is closed, and the upper ends of the two strip grooves 2d extend to the bottom wall of the main body 1, and under the action of the strip groove 2d, the adjacent two sides of the two connecting strips 2 are disconnected from the main body 1.

[0028] like Figure 1 and Figure 3 As shown, in the actual product, a slot matching the terminal body 1 is provided on the insulating end of the winding; during installation, the enameled wire 4 is inserted into the slot and pressed against the bottom wall of the slot. As the terminal is gradually inserted into the slot, the enameled wire 4 is gradually inserted between the two connecting strips 2 and supports the two connecting strips 2 outward, until the blade 2c contacts the enameled wire 4 and pierces it, so that the enameled wire 4 is directly electrically connected to the terminal, thereby replacing the traditional welding electrical connection between the enameled wire 4 and the terminal, and has the advantages of simple structure and convenient assembly.

[0029] The blade 2c for piercing the enameled wire 4 is formed on the connecting strip 2, and the connecting strip 2 and the main body 1 are distributed along the length direction of the main body 1 to effectively reduce the width of the terminal. The overall structure is not only compact, but also occupies little space to adapt to more sizes of external rotor motors.

[0030] Further explanation, the strip groove 2d is inclined, and the inclination directions of the strip groove 2d and the inclined surface 2b are parallel, so that the connecting strip 2 is more easily expanded by the enameled wire 4, which is convenient for the installation of the terminal. Preferably, the length of the strip groove 2d is greater than the length of the vertical plane 2a, so that the connecting strip 2 is easier to deform outward.

[0031] like Figure 1 As shown, barb parts 3 are formed on both sides of the width of the lower end of the body 1, and the two barb parts 3 are symmetrically arranged along the center of the body 1. When in use, a notch matching the barb part 3 is also provided on the inner wall of the slot, and the barb part 3 is buckled in the notch to further position the terminal, so that it forms a more stable electrical connection with the enameled wire 4, ensuring stable operation of the motor.

[0032] Further explanation: the vertical cross section of the barb 3 is roughly V-shaped, and the barb 3 is surrounded by a side surface and two end surfaces. Among them, the side surface of the barb 3 is composed of a horizontal surface 3a and an inclined surface 3b that are continuously distributed from top to bottom, and the distance between the two inclined surfaces 3b gradually decreases from top to bottom, so that the barb 3 can hook the above-mentioned notch more stably, and enhance the positioning strength and stability of the terminal. Preferably, the lower sides of the two inclined surfaces 3b extend to the two connecting strips 2 respectively, that is, the barb 3 is arranged close to the connecting strip 2, so as to enhance the positioning strength of the connection between the terminal and the enameled wire 4, and further ensure the stable operation of the motor.

[0033] In the actual product, the bottom surface of the connecting strip 2 is in an arc shape; a straight hole 1a is provided in the middle of the bottom wall of the body 1 along the thickness direction of the body 1, and the two connecting strips 2 are symmetrically arranged along the center of the straight hole 1a. The straight hole 1a is used for stamping positioning, so that the two grooves 2d are accurately stamped and formed at one time, which is convenient for processing and production. Preferably, the cross section of the straight hole 1a is in an arc shape to ensure the strength of the bottom wall of the terminal block.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An outer rotor motor winding terminal, comprising a sheet-shaped body (1), characterized in that: The bottom wall of the body (1) extends downward to form an integrally formed connecting strip (2), wherein there are two connecting strips (2) which are symmetrically arranged along the center of the body (1); the adjacent side surfaces of the two connecting strips (2) are composed of vertical planes (2a) and inclined planes (2b) which are continuously distributed from top to bottom, the distance between the two inclined planes (2b) gradually increases from top to bottom, and a blade portion (2c) is formed at the connection between the vertical plane (2a) and the inclined plane (2b) on the same connecting strip (2); the upper ends of the two connecting strips (2) are provided with strip grooves (2d) penetrating along the thickness direction of the body (1), the lower ends of the strip grooves (2d) are closed, the upper ends of the two strip grooves (2d) extend to the bottom wall of the body (1), and under the action of the strip grooves (2d), the adjacent two sides of the two connecting strips (2) are disconnected from the body (1).

2. The outer rotor motor winding terminal according to claim 1, characterized in that: The strip groove (2d) is arranged in an inclined manner, and the inclination directions of the strip groove (2d) and the inclined surface 1 (2b) are parallel.

3. The outer rotor motor winding terminal according to claim 2, characterized in that: The length of the strip groove (2d) is greater than the length of the vertical plane (2a).

4. The outer rotor motor winding terminal according to claim 1, 2 or 3, characterized in that: A straight hole (1a) is provided in the middle of the bottom wall of the main body (1) along the thickness direction of the main body (1), and the two connecting strips (2) are symmetrically arranged along the center of the straight hole (1a).

5. The outer rotor motor winding terminal according to claim 4, characterized in that: The cross section of the straight hole (1a) is in the shape of a circular arc.

6. The outer rotor motor winding terminal according to claim 1, 2 or 3, characterized in that: Barb portions (3) are formed on both sides of the width of the lower end of the body (1), and the two barb portions (3) are symmetrically arranged along the center of the body (1).

7. The outer rotor motor winding terminal according to claim 1, characterized in that: The vertical cross-section of the barb portion (3) is roughly V-shaped. The barb portion (3) is surrounded by a side surface and two end surfaces. The side surface of the barb portion (3) is composed of a horizontal surface (3a) and a second inclined surface (3b) that are continuously distributed from top to bottom, and the distance between the two second inclined surfaces (3b) gradually decreases from top to bottom.

8. The outer rotor motor winding terminal according to claim 1, characterized in that: The lower sides of the two inclined surfaces (3b) extend to the two connecting strips (2) respectively.

9. The outer rotor motor winding terminal according to claim 1, characterized in that: The bottom surface of the connecting strip (2) is in an arc shape.

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