Stepping motor with novel circuit board structure

Abstract

The utility model relates to a stepping motor with a novel circuit board structure, which comprises a motor stator, an insulating framework and a PCB (printed circuit board), the insulating framework is inserted into a stator groove of the motor stator, a buckle assembly is arranged at the top of the insulating framework, and the insulating framework is clamped with the PCB through the buckle assembly. According to the scheme, through the design of the buckle structure, the PCB can be rapidly fixed on the insulation framework, the insulation framework is directly inserted into the motor stator, the rapid fixing effect and stability of the stator can be greatly improved, the technological process is simple, and automatic installation is suitable for being achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor manufacturing technical field especially relates to a novel line board structure's stepping motor. BACKGROUND

[0002] Stepping motor as a kind of precision control equipment, plays a vital role in modern industrial automation, its accurate position control and reliable operating characteristics make it widely used in printer, numerical control machine tool, medical equipment and other fields. However, the wiring of stepping motor on the market is mostly designed by adopting enameled wire to be directly wound on the lead wire core, then welded, after being sleeved with insulating sleeve, arranged into stator slot, and finally fixed by UV glue, which brings cumbersome process operation and higher skill requirement for operator, and cannot realize automatic installation. SUMMARY

[0003] The utility model aims at providing a novel line board structure's stepping motor to solve the problems encountered in the above background.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A novel line board structure's stepping motor, including motor stator, insulating framework and PCB board, the insulating framework is inserted in the stator slot of motor stator, the top of insulating framework is equipped with buckle assembly, and the insulating framework is clamped with PCB board through buckle assembly.

[0006] In the above scheme, the insulating framework includes baffle frame and plugboard, and the baffle frame is integrally connected with the plugboard, the plugboard is inserted with the stator slot, and the baffle frame is clamped with the PCB board.

[0007] Further, in implementation, the buckle assembly is at least provided with two, and is arranged at the outer periphery of the baffle frame, the outer shape of the outer side of the PCB board is same with the inner side of the baffle frame, and the baffle frame and the PCB board are clamped through the buckle assembly after mutual abutment.

[0008] In the above scheme, the buckle assembly includes clamping hook, and the outer periphery of the PCB board is provided with clamping groove, when the PCB board is installed on the top of the baffle frame, the clamping hook passes through the clamping groove and tightly presses the board body of the PCB board on the top of the baffle frame, the outer periphery of the baffle frame is provided with cable groove and branch line groove, the branch line groove is distributed on the outer periphery of the baffle frame, and the outer periphery of the PCB board is provided with avoiding groove corresponding to the branch line groove.

[0009] As additional technical points, the inner side of the baffle frame is connected with winding fin through connecting plate, and the two sides of the winding fin are provided with inclined surface, and the board body surface of the PCB board is provided with solder pad of connecting circuit, and the solder pad is arc-shaped structure.

[0010] Compared with the prior art, the utility model has the advantages that the insulating framework is directly inserted into the stator slot of the motor stator, the top of the insulating framework is provided with a buckle assembly, and the insulating framework is clamped with the PCB through the buckle assembly. Through the design of the buckle structure, the PCB can be quickly fixed on the insulating framework, and the insulating framework is directly inserted into the motor stator, so that the quick fixing effect and stability of the stator are greatly improved, the process flow is simple, and automatic installation is suitable. BRIEF DESCRIPTION OF DRAWINGS

[0011] The disclosure of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. In the drawings, the same reference numerals are used to refer to the same parts. Among them:

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the motor stator in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the insulating framework in the utility model;

[0015] Figure 4 It is a top view of the insulating framework in the utility model;

[0016] Figure 5 It is a structural schematic diagram of the PCB in the utility model;

[0017] Reference numerals in the drawings: 1-motor stator; 11-stator slot; 2-insulating framework; 21-baffle frame; 22-insert plate; 23-buckle assembly; 24-claw; 25-winding fin; 26-inclined surface; 27-cable slot; 28-branch line slot; 29-connection plate; 3-PCB; 31-avoidance slot; 32-clamping groove; 33-welding pad. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model will be further described in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the relevant components of the utility model.

[0019] According to the technical solution of the present invention, without changing the essential spirit of the present invention, those skilled in the art may propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are merely illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0020] The technical solution of the present utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Example 1, as Figures 1 to 3 As shown, a stepper motor with a novel circuit board structure includes a motor stator 1, an insulating frame 2, and a PCB board 3. The insulating frame 2 is directly inserted into the stator slot 11 of the motor stator 1. A snap assembly 23 is provided on the top of the insulating frame 2, through which the insulating frame 2 is snapped to the PCB board 3. The snap structure allows the PCB board 3 to be quickly fixed to the insulating frame 2, which is directly inserted into the motor stator 1. This method greatly improves the fast fixing effect and stability of the stator, simplifies the process flow, and is suitable for automated installation.

[0022] See also Figure 3 and Figure 4 The insulating frame 2 includes a baffle frame 21 and an inserting plate 22. The baffle frame 21 can be circular or polygonal, and the shape of the inserting plate 22 is manufactured according to the shape and size of the stator slot 11. The baffle frame 21 and the inserting plate 22 are connected in an integrated manner. The inserting plate 22 is plugged into the stator slot 11, and the baffle frame 21 is snap-fitted to the PCB board 3. Through this mutual cooperation, the tediousness of the traditional installation process can be greatly reduced, saving assembly time.

[0023] At least two clip assemblies 23 are provided, positioned around the perimeter of the baffle frame 21. Depending on actual needs, four to six clip assemblies 23 can be provided, primarily securing the perimeter of the PCB 3. The outer shape of the PCB 3 matches the inner shape of the baffle frame 21. The baffle frame 21 and PCB 3 abut against each other before being engaged by the clip assemblies 23. This matching shape provides a secure fit and improves installation efficiency. Computer-aided design simulations ensure that the clip assemblies 23 securely secure the PCB 3 while also meeting mechanical strength and stability requirements.

[0024] In practice, the buckle assembly 23 includes a hook 24, the inner side of the top of the hook 24 is hook-shaped and has a guiding bevel, which is also a common buckle structure. Figure 5The outer periphery of the PCB 3 is provided with a clamping groove 32, when the PCB 3 is installed on the top of the baffle frame 21, the clamping hook 24 passes through the clamping groove 32 to tightly press the plate body of the PCB 3 on the top of the baffle frame 21, so that the PCB 3 is firmly and stably fixed on the insulating framework 2.

[0025] The outer periphery of the baffle frame 21 is provided with a cable groove 27 and a branch line groove 28, the cable groove 27 is mainly used for the access of three-phase cables, and the branch line groove 28 is used for outputting other branch lines and plays a role of heat dissipation inside the motor. Figure 1 As can be seen in the figure, after the PCB 3 is clamped with the insulating framework 2, the branch line groove 28 and the avoiding groove 31 can highlight the hole position, so as to facilitate the installation of the line inward or the heat dissipation outward.

[0026] In example 2, on the basis of example 1, please refer to Figure 4 The inner side of the baffle frame 21 is connected with a winding fin 25 through a connecting plate 29, and the two sides of the winding fin 25 are provided with inclined surfaces 26. The connecting plate 29 is located between the two sides of the stator slot 11 and is used for installing the stator winding, and the two sides of the winding fin 25 are designed with inclined surfaces 26, so as to facilitate the stator winding to be guided to the appropriate winding position along the inclined surfaces 26 during winding installation.

[0027] The plate body of the PCB 3 is provided with a solder pad 33 connected with a circuit, the solder pad 33 is in an arc shape structure and is mainly made of copper sheet and is soldered by using tin soldering. In the implementation, the thickness and width of the copper foil of the solder pad 33 are determined by using a current capacity calculation formula and combining with actual heat distribution, and the solder pad 33 with appropriate size is designed based on a standard welding process specification, so as to be soldered and ensure that the welding strength meets the requirements.

[0028] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above description is only a specific embodiment of the utility model and is not used to limit the protection scope of the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A stepper motor with a new circuit board structure, characterized by: The invention comprises a motor stator (1), an insulating frame (2) and a PCB board (3); the insulating frame (2) is inserted into a stator slot (11) of the motor stator (1); a snap assembly (23) is provided on the top of the insulating frame (2); and the insulating frame (2) is snap-connected to the PCB board (3) via the snap assembly (23).

2. The stepping motor with a novel circuit board structure according to claim 1, characterized in that: The insulating frame (2) comprises a baffle frame (21) and an inserting plate (22); the baffle frame (21) and the inserting plate (22) are integrally connected; the inserting plate (22) is plugged into the stator slot (11); and the baffle frame (21) is clamped into the PCB board (3).

3. The stepping motor with a novel circuit board structure according to claim 2, characterized in that: At least two of the snap-fit ​​assemblies (23) are provided and are arranged on the outer periphery of the baffle frame (21). The outer shape of the PCB board (3) is the same as the inner shape of the baffle frame (21). The baffle frame (21) and the PCB board (3) are abutted against each other and then snap-fitted via the snap-fit ​​assemblies (23).

4. The stepping motor with a novel circuit board structure according to claim 3 is characterized in that: The snap assembly (23) includes a hook (24), and a slot (32) is provided on the outer periphery of the PCB board (3); when the PCB board (3) is mounted on the top of the baffle frame (21), the hook (24) passes through the slot (32) to press the body of the PCB board (3) against the top of the baffle frame (21).

5. The stepping motor with a novel circuit board structure according to claim 2, characterized in that: The outer periphery of the baffle frame (21) is provided with a cable groove (27) and a branch groove (28), the branch groove (28) is distributed on the outer periphery of the baffle frame (21), and the outer periphery of the PCB board (3) is provided with an avoidance groove (31) corresponding to the branch groove (28).

6. The stepping motor with a novel circuit board structure according to claim 2, characterized in that: The inner side of the baffle frame (21) is connected to a winding fin (25) via a connecting plate (29), and inclined surfaces (26) are provided on both sides of the winding fin (25).

7. The stepping motor with a novel circuit board structure according to claim 1, characterized in that: A soldering pad (33) for connecting the circuit is provided on the surface of the PCB board (3), and the soldering pad (33) is an arc-shaped structure.

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