Pin fixing plate

Abstract

The utility model discloses a pin fixing plate, which comprises a stator assembly, pins and a pin fixing plate, the pins are arranged on the end face of the stator assembly, each pin is provided with a connecting pin welded with a winding of the stator assembly and a fixing pin suitable for being welded with a circuit board of the stator assembly, and the pin fixing plate is arranged on the end face of the stator assembly. The inner wall of the contact pin fixing hole is communicated with the welding opening groove, so that the welding part is located on the outer side, sufficient operation space is provided for welding equipment, welding is accurate, the problems of uneven welding spots, insufficient strength and the like are solved, internal and external dual positioning is formed through the positioning protection plate and the positioning insertion plate, the contact pin fixing plate can be rapidly and accurately installed, errors are reduced, and displacement is prevented; the design of the planar positioning boss and the positioning slot improves the matching precision of the contact pin and the fixing plate, prevents the contact pin from loosening and shaking, guarantees the stable connection, improves the overall performance of the motor, prolongs the service life of the motor, and can improve the bad condition of terminal contact pin wrapping injection molding.

Description

Technical Field

[0001] This utility model belongs to the field of encapsulated motor technology, specifically relating to a pin fixing plate. Background Technology

[0002] In the manufacturing of injection molded motors, the pin retainer plate is a key component connecting the stator assembly and the circuit board. Its performance directly affects the motor's operational stability and reliability. Traditional pin retainer plate designs have shortcomings, such as narrow welding area space and unreasonable welding slot dimensions, making precise operation of welding equipment difficult and prone to welding quality problems, such as uneven weld points and insufficient weld strength. These issues, in turn, affect the electrical connection performance of the injection molded motor, potentially causing malfunctions during operation. Furthermore, the pin fixing method is not optimized, and the fit between the pin and the pin retainer plate is not precise enough, easily leading to pin loosening and affecting the normal operation of the motor. Utility Model Content

[0003] The purpose of this invention is to provide a pin fixing plate to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pin fixing plate, comprising a stator assembly, pins and a pin fixing plate, wherein the pin pins are disposed on the end face of the stator assembly, and there are multiple pins, each pin having a connecting pin for welding to the winding of the stator assembly and a fixing pin suitable for welding to the circuit board of the stator assembly;

[0005] The pin fixing plate is arc-shaped, with pin fixing holes at both ends near the outer edge. The connecting pin and fixing pin are respectively fitted into the pin fixing holes. The outer side of the pin fixing plate has welding opening slots that facilitate welding equipment to weld the connecting pin, fixing pin, stator assembly windings, and circuit boards.

[0006] The inner wall of the pin fixing hole is connected to the welding opening groove, so that the welding parts of the connecting foot and fixing foot in the pin are welded outside the welding opening groove. The welding equipment can perform welding operations on the connecting foot and fixing foot more accurately, effectively avoiding problems such as uneven weld points and insufficient welding strength, greatly improving the welding quality, and thus ensuring the stability of the electrical connection of the injection molding motor.

[0007] Preferably, the outer ends of the pin fixing plate are provided with positioning guards that are vertically downward and fit against the outer surface of the stator assembly. These guards can tightly fit against the outer surface of the stator assembly, providing good positioning and limiting functions. When installing the pin fixing plate, the positioning guards can help to quickly and accurately determine its position, reducing installation errors.

[0008] Preferably, the lower end of the pin fixing plate is provided with a positioning plate that is inserted into the stator assembly to position the pin fixing plate, ensuring that the pin fixing plate will not be displaced during motor operation, ensuring that the connection between the pin and the stator assembly winding and circuit board remains stable, and improving the overall performance and service life of the motor.

[0009] Preferably, the pin fixing hole is provided with a positioning boss with a flat top, and a positioning slot with the same shape as the pin is provided through the positioning boss, which effectively prevents the pin from loosening or shaking, ensures the reliability of the electrical connection of the pin during motor operation, and reduces failures caused by loose pins.

[0010] Preferably, after the pin fixing plate is mounted on the stator assembly, the fixing foot of the pin extends from the positioning slot to the outer upper part of the pin fixing plate, and the connecting foot of the pin is bent outward and located in the welding opening groove. This not only fixes the position of the connecting foot during welding, facilitating welding operations, but also makes reasonable use of space, making the entire pin fixing plate structure more compact.

[0011] Compared with the prior art, the technical effects and advantages of this utility model are as follows: This pin fixing plate, by connecting the inner wall of the pin fixing hole with the welding opening groove, places the welding part on the outside, providing sufficient operating space for the welding equipment, enabling precise welding, and avoiding problems such as uneven weld points and insufficient strength. Furthermore, the use of the positioning guard plate and the positioning insert plate to form double positioning inside and outside allows for quick and accurate installation of the pin fixing plate, reducing errors and preventing displacement. The design of the flat positioning boss and positioning slot improves the fitting accuracy between the pin and the fixing plate, prevents the pin from loosening or shaking, ensures stable connection, improves the overall performance and service life of the motor, and thus improves the situation of poor pin wrapping during injection molding of the terminal pin. Attached Figure Description

[0012] Figure 1 This is a component diagram of the pin fixing plate and stator assembly of this utility model;

[0013] Figure 2 This is a diagram showing the assembly of the pin fixing plate and the stator assembly of this utility model;

[0014] Figure 3 This is a perspective view of the pin fixing plate of this utility model.

[0015] In the diagram: 1. Stator assembly; 2. Pin; 3. Pin retaining plate; 4. Connecting foot; 5. Fixing foot; 6. Pin retaining hole; 7. Welding opening slot; 8. Positioning guard plate; 9. Positioning insert plate; 10. Positioning boss; 11. Positioning slot. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a pin fixing plate, including a stator assembly 1, pins 2, and a pin fixing plate 3. The pins 2 are located on the end face of the stator assembly 1, and there are multiple pins 2. Each pin has a connecting pin 4 that is welded to the winding of the stator assembly 1 and a fixing pin 5 that is suitable for welding to the circuit board of the stator assembly 1, providing a key path for the circuit connection of the motor. The pin design with different functions accurately adapts to the electrical connection requirements of different parts inside the motor, ensuring stable power transmission between the winding and the circuit board, and guaranteeing the normal operation of the motor.

[0018] The pin fixing plate 3 is arc-shaped, with pin fixing holes 6 at both ends near the outer edge, corresponding to the connecting pin 4 and fixing pin 5 of the pin 2. This structure provides a stable mounting position for the pin, restricts the pin's freedom of movement on the fixing plate, and prevents displacement due to vibration or other factors during motor operation, ensuring the stability of the pin's electrical connection. The connecting pin 4 and fixing pin 5 of the pin 2 are correspondingly fitted into the pin fixing holes 6. The outer side of the pin fixing plate 3 has welding opening slots 7, which facilitate welding equipment to weld the connecting pin 4, fixing pin 5 to the windings of the stator assembly 1 and the circuit board. The welding opening slots 7 on the outer side not only provide operating space for the welding equipment but also place the welding parts of the connecting pin 4 and fixing pin 5 outside the slot. This design greatly facilitates the welding operation, enabling the welding equipment to weld the pins more accurately and significantly improving the welding quality.

[0019] The inner wall of the pin fixing hole 6 is connected to the welding opening groove 7, so that the welding parts of the connecting foot 4 and fixing foot 5 in the pin 2 are welded outside the welding opening groove 7.

[0020] The pin fixing plate 3 has positioning guard plates 8 vertically downwards at both ends on its outer side, which are positioned to fit tightly against the outer surface of the stator assembly 1. During the installation of the pin fixing plate 3, the positioning guard plates 8 can quickly assist in determining its position, greatly improving installation efficiency. Simultaneously, it acts as a limiter during motor operation, preventing the pin fixing plate 3 from shifting position and ensuring the stability of the entire internal structure of the motor.

[0021] The pin fixing plate 3 has a positioning plate 9 on one side of its lower end, which is inserted into the inside of the stator assembly 1 to position the pin fixing plate 3. The positioning plate 9 on one side of its lower end can be inserted into the inside of the stator assembly 1, forming a double positioning mechanism with the positioning guard plate 8. This all-round positioning method greatly improves the positioning accuracy of the pin fixing plate 3, further ensures the stability of the connection between the pin and the winding of the stator assembly 1 and the circuit board, and effectively improves the overall performance and service life of the motor.

[0022] The pin fixing hole 7 is provided with a positioning boss 10 with a flat top, and a positioning slot 11 with the same shape as the pin 2 is provided through the positioning boss 10. After the pin fixing plate 3 is installed on the stator assembly 1, the fixing foot 5 of the pin 2 passes through the positioning slot 11 to the outside of the upper end of the pin fixing plate 3, and the connecting foot 4 of the pin 2 is bent outward at 90 degrees and is in the welding opening groove 7. The top of the positioning boss 10 in the pin fixing hole 7 is flat, and the fixing foot 5 of the pin 2 passes through the positioning slot 11. This structural design closely matches the shape of the pin, further improves the fitting accuracy between the pin and the pin fixing plate 3, provides more stable support for the pin, effectively prevents the pin from loosening or shaking, and enhances the reliability of the electrical connection of the pin during motor operation.

[0023] Specifically, in use, the first step is to assemble the pins with the stator assembly and the pin fixing plate. Multiple pins 2 have their pins located on the end face of the stator assembly 1. Connecting pins 4 and the windings of the stator assembly 1, and fixing pins 5 and the circuit board of the stator assembly 1, respectively undertake the key task of circuit connection. Different functional pins precisely adapt to the electrical connection requirements of different parts inside the motor, ensuring stable power transmission between the windings and the circuit board. Simultaneously, the connecting pins 4 and fixing pins 5 of the pins 2 are correspondingly fitted into the pin fixing holes 6 near the outer edges on both ends of the pin fixing plate 3. The pin fixing holes 6 provide a stable mounting position for the pins, restricting their freedom of movement on the fixing plate and preventing displacement due to vibration during motor operation, thus ensuring the stability of the pin electrical connection.

[0024] Secondly, let's discuss the working principle related to welding. The welding opening groove 7 on the outer side of the pin fixing plate 3 provides ample operating space for the welding equipment. One side of the inner wall of the pin fixing hole 6 is connected to the welding opening groove 7, so that the welding parts of the connecting foot 4 and fixing foot 5 of the pin 2 are located outside the welding opening groove 7. This design facilitates welding operations, allowing the welding equipment to accurately weld the pins, significantly improving welding quality and reducing electrical connection failures caused by poor welding. Furthermore, let's discuss the positioning principle of the pin fixing plate and the stator assembly. The vertically downward positioning guard plates 8 on both ends of the outer side of the pin fixing plate 3 fit tightly against the outer surface of the stator assembly 1 during installation, quickly assisting in determining the position of the pin fixing plate 3, improving installation efficiency, and also acting as a limiter during motor operation, preventing the pin fixing plate 3 from shifting position and ensuring the stability of the motor's internal structure. Meanwhile, the positioning plate 9 on one side of the lower end of the pin fixing plate 3 can be inserted into the inside of the stator assembly 1, forming a double positioning mechanism with the positioning guard plate 8, which greatly improves the positioning accuracy of the pin fixing plate 3, further ensures the stability of the connection between the pin and the winding of the stator assembly 1 and the circuit board, and effectively improves the overall performance and service life of the motor.

[0025] Finally, there is the principle of precise positioning of the pin within the pin fixing plate. The pin fixing hole 7 has a positioning boss 10 with a flat top, through which a positioning slot 11, identical in shape to the pin 2, passes. After the pin fixing plate 3 is mounted on the stator assembly 1, the fixing foot 5 of the pin 2 extends from the positioning slot 11 to the upper exterior of the pin fixing plate 3, and the connecting foot 4 bends outward at 90 degrees into the welding opening groove 7. This structural design, which closely matches the shape of the pin, further improves the fitting accuracy between the pin and the pin fixing plate 3, provides more stable support for the pin, prevents the pin from loosening or shaking, and enhances the reliability of the electrical connection of the pin during motor operation.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pin fixing plate, comprising a stator assembly (1), pins (2), and a pin fixing plate (3), characterized in that: The pin (2) is located on the end face of the stator assembly (1), and there are multiple pins (2). Each pin has a connecting pin (4) that is welded to the winding of the stator assembly (1) and a fixing pin (5) that is suitable for welding the circuit board of the stator assembly (1). The pin fixing plate (3) is arc-shaped and has pin fixing holes (6) at both ends of its surface near the outer edge. The connecting foot (4) and fixing foot (5) of the pin (2) are correspondingly fitted in the pin fixing hole (6). The outer side of the pin fixing plate (3) is provided with a welding opening groove (7) which is conducive to welding equipment for welding the connecting foot (4), fixing foot (5) and the winding of the stator assembly (1) and the circuit board.

2. The pin fixing plate according to claim 1, characterized in that: The inner wall of the pin fixing hole (6) is connected to the welding opening groove (7), so that the welding parts of the connecting foot (4) and fixing foot (5) in the pin (2) are welded outside the welding opening groove (7).

3. The pin fixing plate according to claim 1, characterized in that: The pin fixing plate (3) has a positioning guard plate (8) that is vertically downward at both ends on the outer side and is positioned to fit the outer surface of the stator assembly (1).

4. The pin fixing plate according to claim 1, characterized in that: The pin fixing plate (3) is provided with a positioning plate (9) on one side of its lower end, which is inserted into the inside of the stator assembly (1) to position the pin fixing plate (3).

5. A pin fixing plate according to claim 2, characterized in that: The welding opening groove (7) is provided with a positioning boss (10) with a flat top, and a positioning slot (11) with the same shape as the pin (2) is provided through the positioning boss (10).

6. A pin fixing plate according to claim 5, characterized in that: After the pin fixing plate (3) is installed on the stator assembly (1), the fixing foot (5) of the pin (2) passes through the positioning slot (11) to the outside of the upper end of the pin fixing plate (3), and the connecting foot (4) of the pin (2) is bent outward at 90 degrees and is in the welding opening slot (7).

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