Electric corrosion terminal connecting structure

Abstract

The invention relates to the technical field of motors, in particular to an electric corrosion terminal connecting structure which is used between an end cover of a motor and a motor stator, a stator contact pin is installed on the motor stator, an electric corrosion terminal is installed between the end cover and the stator contact pin, and an end cover groove is formed in the side, close to the motor stator, of the end cover. The bottom of the electric corrosion terminal is connected with the stator pin in an inserted mode, the top of the electric corrosion terminal is provided with a first extending part, and at least part of the first extending part abuts against the groove bottom wall of the end cover groove. The electric corrosion terminal and the stator pin are assembled in a plugging mode, welding is not needed, the assembling efficiency is improved, the first extension part at least partially abuts against the groove bottom wall of the end cover groove, the first extension part is in direct contact with the plane part of the bottom wall of the motor end cover groove, the problem that the size of an R angle is unstable is avoided, and the reliability of the motor is improved. The reliability of connection between the contact pin and the motor end cover is ensured, and the first-pass yield of products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to an electro-corrosion terminal connection structure. Background Art

[0002] At present, the end cover and the electro-etching pin of the motor stator are connected by a terminal sleeve on the pin, and then the terminal and the pin are welded together using an electric soldering iron. After the motor is assembled, the bent part of the electro-etching terminal contacts the R corner part of the motor end cover to form conduction;

[0003] The current electro-corrosion terminal structure has the following problems:

[0004] The unreasonable design of the electro-etched terminal affects the soldering operation, making it difficult for employees to operate and unable to use automatic laser soldering equipment;

[0005] Due to the difference in R angle of the motor end cover and certain deformation of the bent part of the terminal, electrical corrosion and poor conduction problems are prone to occur. Summary of the invention

[0006] The purpose of the present invention is to solve the problems pointed out in the background technology and to propose an electro-corrosion terminal connection structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An electro-etching terminal connection structure is used between the end cover of a motor and the motor stator. A stator pin is installed on the motor stator, and the electro-etching terminal is installed between the end cover and the stator pin. The end cover has an end cover groove on the side close to the motor stator. The bottom of the electro-etching terminal is plugged into the stator pin. The top of the electro-etching terminal has a first extension portion, and the first extension portion at least partially abuts against the bottom wall of the end cover groove.

[0009] The electro-etching terminal comprises a main body plate, the first extension portion is integrally formed on the top of the main body plate, and the top end of the first extension portion protrudes from the end surface of the motor stator in a natural state.

[0010] The first extension portion is formed by bending the upper portion of the main body plate along the y-axis, and the angle between the first extension portion and the main body plate is greater than ninety degrees and less than one hundred and eighty degrees.

[0011] One side of the main body plate abuts against the first inner wall of the motor stator.

[0012] The electro-etching terminal comprises a second extension portion integrally formed at the bottom of the main body plate, the second extension portion has a slot with an open bottom, and the stator pin is at least partially inserted into the slot.

[0013] The slot comprises a main notch and a flared portion which are connected to each other, and at least a portion of the stator pin is interference-fitted with the main notch.

[0014] The second extension portion is formed by bending the lower portion of the main body plate along the z-axis.

[0015] The second extension portion includes a first bending portion and a second bending portion which are arranged in parallel. The first bending portion is formed by bending the main plate along the z-axis, and the second bending portion is formed by bending the bottom end of the first bending portion along the x-axis. The opening of the slot is located at the bending positions of the first bending portion and the second bending portion.

[0016] The bottom surfaces of the bending parts of the first bending part and the second bending part protrude from the bottom surface of the main body plate.

[0017] The present invention proposes an electro-etching terminal connection structure, which has the beneficial effects that the electro-etching terminal and the stator pin of the device are assembled in a plug-in manner, and no welding is required, thereby improving the assembly efficiency; and because the first extension portion at least partially abuts against the bottom wall of the end cover slot, the first extension portion is in direct contact with the flat portion of the bottom wall of the motor end cover slot, thereby avoiding the problem of unstable R angle size, ensuring the reliability of the connection between the pin and the motor end cover, and improving the first-time qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the matching structure of the electro-erosion terminal, the end cover and the stator pin of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the electro-etching terminal of the present invention;

[0020] Figure 3 It is a schematic diagram of the end cover and stator structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the main structure of the electro-etching terminal of the present invention;

[0022] Figure 5 It is a left-side structural schematic diagram of the electro-etching terminal of the present invention.

[0023] In the figure: end cover 1, end cover slot 2, motor stator 3, stator pin 4, first inner wall 5, end face 6, slot bottom wall 7, main plate 8, first extension part 9, second extension part 10, slot 11, electro-etching terminal 12, first bending part 101, second bending part 102, main notch 111, and flared part 112. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-Figure 5, an electro-etching terminal connection structure, used between the end cover 1 of the motor and the motor stator 3, the motor stator 3 is equipped with a stator pin 4, the electro-etching terminal 12 is installed between the end cover 1 and the stator pin 4, the end cover 1 has an end cover slot 2 on the side close to the motor stator 3, the bottom of the electro-etching terminal 12 is plugged with the stator pin 4, and the top of the electro-etching terminal 12 has a first extension portion 9, and the first extension portion 9 at least partially abuts against the bottom wall 7 of the end cover slot 2.

[0026] refer to Figure 1 The electro-etching terminal of the device and the stator pin 4 are assembled by plugging, without welding, which improves the assembly efficiency. In addition, since the first extension portion 9 at least partially abuts against the bottom wall 7 of the end cover slot 2, the first extension portion 9 is in direct contact with the plane portion of the bottom wall 7 of the motor end cover slot, thereby avoiding the problem of unstable R angle size, ensuring the reliability of the connection between the pin and the motor end cover, and improving the first-time qualified rate of the product.

[0027] As an embodiment, the electro-etching terminal 12 includes a main body plate 8, and a first extension portion 9 is integrally formed on the top of the main body plate 8. In a natural state, the top end of the first extension portion 9 protrudes from the end face 6 of the motor stator 3. The main body plate 8 and the first extension portion 9 of the device are integrally formed, and the structure is stable and easy to manufacture. The top end of the first extension portion 9 protrudes from the end face 6 of the motor stator 3, so that the stability of the contact between the first extension portion 9 and the bottom wall 7 of the end cover groove 2 can be guaranteed during assembly.

[0028] As an embodiment, the first extension portion 9 is formed by bending the upper portion of the main plate 8 along the y-axis. The angle between the first extension portion 9 and the main plate 8 is greater than ninety degrees and less than one hundred and eighty degrees. The obtuse angle setting can make the first extension portion 9 and the main plate 8 have better elasticity, thereby further improving the contact stability between the electro-etching terminal 12 and the end cover 1.

[0029] One side of the main body plate 8 abuts against the first inner wall 5 of the motor stator 3 to improve the stability of assembly.

[0030] refer to Figure 2 The electro-etching terminal 12 includes a second extension portion 10 integrally formed at the bottom of the main plate 8. The second extension portion 10 has a slot 11 with an open bottom. The stator pin 4 is at least partially inserted into the slot 11. The main plate 8 and the second extension portion 10 are integrally formed, and the structure is stable and easy to manufacture.

[0031] refer to Figure 2 The slot 11 includes a main slot 111 and a flared portion 112 which are connected to each other. The stator pin 4 is at least partially interference-fitted with the main slot 111. The entire slot 11 has a bell-mouth structure for easy insertion.

[0032] As a forming method, the second extension part 10 is formed by bending the lower part of the main plate 8 along the z-axis; further, the second extension part 10 includes a first bending part 101 and a second bending part 102 arranged in parallel, the first bending part 101 is formed by bending the main plate 8 along the z-axis, and the second bending part 102 is formed by bending the bottom end of the first bending part 101 along the x-axis, and the opening of the slot 11 is located at the bending part of the first bending part 101 and the second bending part 102. The second extension part 10 of the device adopts a double-layer structure, which increases the contact area between the electro-etching terminal 12 and the stator pin 4, and further improves the reliability of the connection between the pin and the motor end cover.

[0033] Furthermore, the entire electro-etching terminal 12 is formed by bending in one piece, has good structural integrity, is easy to manufacture, and has stable connection.

[0034] The bottom surfaces of the first bending portion 101 and the second bending portion 102 protrude from the bottom surface of the main body plate 8 , so that the second extension portion 10 contacts the stator pin 4 first, thereby improving the convenience of assembly.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and inventive concept of the present invention by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. An electro-corrosion terminal connection structure, used between an end cover (1) of a motor and a motor stator (3), wherein a stator pin (4) is installed on the motor stator (3), characterized in that: The electro-etching terminal (12) is installed between the end cover (1) and the stator pin (4); the end cover (1) has an end cover slot (2) on a side close to the motor stator (3); the bottom of the electro-etching terminal (12) is plugged into the stator pin (4); the top of the electro-etching terminal (12) has a first extension portion (9); the first extension portion (9) at least partially abuts against the bottom wall (7) of the end cover slot (2).

2. The electro-corrosion terminal connection structure according to claim 1, characterized in that: The electro-etching terminal (12) comprises a main body plate (8), the first extension portion (9) is integrally formed on the top of the main body plate (8), and in a natural state, the top end of the first extension portion (9) protrudes from the end surface (6) of the motor stator (3).

3. The electro-corrosion terminal connection structure according to claim 2, characterized in that: The first extension portion (9) is formed by bending the upper portion of the main body plate (8) along the y-axis, and the angle between the first extension portion (9) and the main body plate (8) is greater than ninety degrees and less than one hundred and eighty degrees.

4. An electro-corrosion terminal connection structure according to claim 2 or 3, characterized in that: One side of the main body plate (8) abuts against the first inner wall (5) of the motor stator (3).

5. An electro-corrosion terminal connection structure according to claim 2 or 3, characterized in that: The electrolytic terminal (12) comprises a second extension portion (10) integrally formed at the bottom of the main body plate (8), the second extension portion (10) having a slot (11) with an open bottom, and the stator pin (4) is at least partially inserted into the slot (11).

6. The electro-corrosion terminal connection structure according to claim 5, characterized in that: The slot (11) comprises a main slot (111) and a flared portion (112) which are arranged in communication with each other, and the stator pin (4) is at least partially interference-fitted with the main slot (111).

7. The electro-corrosion terminal connection structure according to claim 5, characterized in that: The second extension portion (10) is formed by bending the lower portion of the main body plate (8) along the z-axis.

8. The electro-corrosion terminal connection structure according to claim 7, characterized in that: The second extension portion (10) comprises a first bending portion (101) and a second bending portion (102) which are arranged in parallel, the first bending portion (101) being formed by bending the main plate (8) along the z-axis, the second bending portion (102) being formed by bending the bottom end of the first bending portion (101) along the x-axis, and the opening of the slot (11) is located at the bending positions of the first bending portion (101) and the second bending portion (102).

9. The electro-corrosion terminal connection structure according to claim 7, characterized in that: The bottom surfaces of the bending parts of the first bending portion (101) and the second bending portion (102) protrude from the bottom surface of the main body plate (8).

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