Coil framework structure and motor

Abstract

The utility model relates to the technical field of motors, and discloses a coil framework structure and a motor, the coil framework structure comprises a hollow framework main body, a convex block is arranged on a stator, the inner side of the framework main body is provided with an insertion groove suitable for being in insertion connection with the convex block, and the outer side wall of the framework main body is provided with a coil. A first limiting block and a second limiting block are arranged at the two ends of the framework body respectively, and the coil is arranged between the first limiting block and the second limiting block for limiting. According to the coil framework structure, the coil is positioned through the first limiting block and the second limiting block, so that the coil is not prone to displacement, and the coil is prevented from sliding off; and the lead-out end part of the lead is positioned through the positioning groove in the first limiting block, so that the shaping consistency is improved, and the operation reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a coil frame structure and a motor. Background Technology

[0002] In some existing motor products, such as torque motors, the coil is installed by directly placing the coil and insulation component (insulation material) into the coil mounting slot of the motor, and then securing the coil end with binding wire or insulating clamps. This installation structure makes the coil prone to displacement within the mounting slot; excessive displacement poses a risk of the coil slipping off. Furthermore, unstable coil fixation and easy displacement can lead to difficulties in ensuring the consistency of the conductor lead-out ends, and the coil lead-out ends are prone to loosening after fixation, affecting operational reliability. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model provides a coil frame structure suitable for mounting on the stator of a motor. The coil frame structure includes a hollow frame body, with protrusions on the stator. An insertion groove suitable for insertion into the protrusions is provided on the inner side of the frame body. A coil is mounted on the outer wall of the frame body. A first limiting block and a second limiting block are respectively provided at both ends of the frame body, and the coil is positioned between the first and second limiting blocks for positioning. This utility model's coil frame structure positions the coil using the first and second limiting blocks, preventing displacement and slippage. The positioning groove on the first limiting block positions the lead-out end of the wire, improving shaping consistency and operational reliability.

[0004] Optionally, the outer wall is annular, and the coil is wound around the outer wall.

[0005] Optionally, the corner of the outer wall is provided with an arc-shaped surface.

[0006] Optionally, the stator is annular, the stator is provided with an annular inner sidewall, and a plurality of protrusions are provided, which are distributed annularly on the inner sidewall. The main body of the skeleton is provided with a plurality of protrusions and is inserted into the protrusions one by one.

[0007] Optionally, the main body of the skeleton is provided with a mounting slot on the side near the inner sidewall, and the inner sidewall is placed in the mounting slot for engagement.

[0008] Optionally, the first limiting block is disposed at one end of the skeleton body near the stator, and the second limiting block is disposed at one end of the skeleton body away from the stator. The axial direction of the stator is a first direction. The first limiting block includes a first extension and a second extension. The first extension extends out of the skeleton body along the first direction, and the second extension extends out of the skeleton body along a second direction, which is perpendicular to the first direction.

[0009] Optionally, the second limiting block extends out of the skeleton body along the first direction, and two second limiting blocks are symmetrically arranged.

[0010] Optionally, the coil has a lead wire extension end, and the first limiting block is provided with a positioning groove for positioning the lead wire extension end.

[0011] Optionally, the skeleton body includes a first skeleton body and a second skeleton body spliced ​​together. The first skeleton body and the second skeleton body have the same structure. The first skeleton body is provided with a first snap-fit ​​block. The second skeleton body is provided with a first snap-fit ​​groove corresponding to the first snap-fit ​​block. The second skeleton body is provided with a second snap-fit ​​block. The first skeleton body is provided with a second snap-fit ​​groove corresponding to the second snap-fit ​​block. The skeleton body is made of insulating material, and potting compound is provided at the coil.

[0012] Compared to existing technologies, the coil frame structure of this invention uses a first limiting block and a second limiting block to position the coil, making it less prone to displacement and preventing it from slipping off. The positioning groove on the first limiting block positions the lead-out end of the wire, improving shaping consistency and operational reliability. During coil winding and installation, the presence of the first and second limiting blocks prevents displacement and avoids wire slippage. A winding groove is formed between the first and second limiting blocks, and their placement at both ends of the frame body results in a wider winding groove, reducing winding difficulty. An arc-shaped surface is provided at the corner of the outer wall. The winding process minimizes damage to the coil; the inner wall is secured within the mounting slot, ensuring stable installation and preventing displacement after installation, thus improving the accuracy of the frame's mounting position and consequently the coil's mounting position, resulting in more reliable operation; the frame consists of a first frame and a second frame that are spliced ​​together. The first and second frame have identical structures, requiring only one mold for production, saving on mold-making costs; the temperature during glue application causes thermal expansion and contraction in the frame, causing it to expand outwards and deform to a certain extent. This deformation compresses the coil, making it more securely fixed.

[0013] In addition, this utility model also provides an electric motor, which includes the above-mentioned coil frame structure. This electric motor also has the same beneficial effects as the above-mentioned coil frame structure, which will not be described in detail here. Attached Figure Description

[0014] Figure 1 This is a perspective view of the coil frame structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the coil frame structure of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0017] Figure 4 This is a schematic diagram of the stator structure of the coil frame structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the coil portion of the coil frame structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the positioning groove of the coil frame structure of this utility model;

[0020] Figure 7 This is a schematic diagram of the main body of the coil frame structure of this utility model;

[0021] Figure 8 This is an exploded view of the main body of the coil frame structure of this utility model;

[0022] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the stator, 101 is the protrusion, 102 is the inner sidewall, 2 is the skeleton body, 20 is the mounting slot, 201 is the insertion slot, 21 is the first limiting block, 210 is the outer sidewall, 211 is the arc surface, 212 is the first extension, 213 is the second extension, 214 is the positioning slot, 22 is the second limiting block, 23 is the first skeleton body, 231 is the first locking block, 232 is the second slot, 24 is the second skeleton body, 241 is the first slot, 242 is the second locking block, 3 is the coil, 31 is the lead-out end of the wire, and 4 is the potting compound. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0026] See Figures 1-8 This utility model provides a coil frame structure suitable for mounting on the stator 1 of a motor. The coil frame structure includes a hollow frame body 2, with a protrusion 101 on the stator 1. The inner side of the frame body 2 has a insertion groove 201 suitable for insertion into the protrusion 101. The insertion groove 201 is a through groove. A coil 3 is mounted on the outer wall 210 of the frame body 2. A first limiting block 21 and a second limiting block 22 are respectively provided at both ends of the frame body 2. The coil 3 is positioned between the first limiting block 21 and the second limiting block 22 for positioning. Both the first limiting block 21 and the second limiting block 22 protrude towards the side away from the insertion groove 201. This utility model's coil frame structure positions the coil using the first limiting block and the second limiting block, making the coil less prone to displacement and preventing it from slipping. The positioning groove on the first limiting block positions the lead-out end of the wire, improving the consistency of the shape and enhancing operational reliability.

[0027] See Figure 2 , Figure 3 , Figure 5 and Figure 7 The outer wall 210 is annular, and the coil 3 is wound on the outer wall 210. When the coil 3 is wound, the first limiting block and the second limiting block are provided, which makes it difficult for the coil to shift during winding and prevents the wire from slipping. The winding groove is formed between the first limiting block 21 and the second limiting block 22. Since the first limiting block 21 and the second limiting block 22 are set at both ends of the frame body 2, the width of the winding groove is relatively wide, which reduces the difficulty of winding. The corner of the outer wall 210 is provided with an arc surface 211, which makes it difficult to damage the coil during winding. The stator 1 is annular, and the stator 1 is provided with an annular inner wall 102. Several protrusions 101 are provided. Several protrusions 101 are distributed annularly at equal intervals on the inner wall 102. The frame body 2 is provided with multiple protrusions 101 and they are inserted one by one with the protrusions 101. After insertion, they are fixed by tight fitting, glue application and other methods.

[0028] See Figure 6 and Figure 7 The frame body 2 is provided with a mounting slot 20 on the side near the inner wall 102. The inner wall 102 is placed in the mounting slot 20 for locking, which makes the installation stable and less prone to displacement after installation. This improves the accuracy of the installation position of the frame body 2, thereby improving the accuracy of the coil installation position and making the operation more reliable.

[0029] See Figures 2-7The first limiting block 21 is disposed at one end of the frame body 2 near the inner wall of the stator 1, and the second limiting block 22 is disposed at one end of the frame body 2 away from the inner wall of the stator 1. The axial direction of the stator 1 is the first direction. The first limiting block 21 includes a first extension 212 and a second extension 213. The first extension 212 extends out of the frame body 2 along the first direction, and the second extension 213 extends out of the frame body 2 along the second direction, thereby improving the limiting effect of the first limiting block 21 on the coil and making it less likely for the coil to slip off one side of the first limiting block 21. The second direction is perpendicular to the first direction. See reference. Figure 7 The first direction is the Z-axis direction, and the second direction is the X-axis direction; the second limiting block 22 extends out of the skeleton body 2 along the first direction. There are two symmetrically arranged second limiting blocks 22 to improve the limiting effect of the second limiting block 22 on the coil, so that the coil is not easy to slip off one side of the second limiting block 22; the coil 3 has a wire lead-out end 31. The first limiting block 21 is provided with a positioning groove 214 for positioning the wire lead-out end 31. The positioning groove 214 positions the wire lead-out end 31, improves the shaping consistency of the wire lead-out end 31, and improves the operational reliability.

[0030] See Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 The main frame 2 includes a first main frame 23 and a second main frame 24 that are spliced ​​together. The first main frame 23 and the second main frame 24 have the same structure, and only one mold is needed to produce the first main frame 23 and the second main frame 24, saving mold opening costs. The first main frame 23 is provided with a first snap-fit ​​block 231, the second main frame 24 is provided with a first snap-fit ​​groove 241 corresponding to the first snap-fit ​​block 231, the second main frame 24 is provided with a second snap-fit ​​block 242, and the first main frame 23 is provided with a second snap-fit ​​groove 232 corresponding to the second snap-fit ​​block 242. The first main frame 23 and the second main frame 24 are connected by... The coil is fixed by means of tight fitting, glue, etc. The main body 2 of the frame is made of insulating material to prevent the coil from conducting electricity with other components. The main body 2 of the frame can be injection molded, which has a low manufacturing cost. A potting compound 4 is provided at the coil 3. After the coil is installed and wired, it needs to be potted. When the potting compound 4 is poured in, since the potting compound 4 is hot, it will transfer this heat to the main body of the frame. The temperature of the potting compound 4 will cause the main body 2 of the frame to expand and contract due to thermal expansion and contraction. Since the inner side of the main body 2 of the frame is provided with protrusions 101, the main body 2 of the frame is not easy to deform inward. Therefore, the main body 2 of the frame will expand outward and deform to a certain extent. This deformation will squeeze the coil, making the coil more securely fixed.

[0031] The coil frame structure of this utility model uses a first limiting block and a second limiting block to position the coil, making it less prone to displacement and preventing it from slipping off. The positioning groove on the first limiting block positions the lead-out end of the wire, improving shaping consistency and operational reliability. During coil winding and installation, the first and second limiting blocks prevent displacement and wire slippage. A winding groove is formed between the first and second limiting blocks, and their placement at both ends of the frame body results in a wider winding groove, reducing winding difficulty. The corners of the outer wall have arc-shaped surfaces, facilitating winding. It is not easy to damage the coil; the inner wall is placed in the mounting slot for secure engagement, ensuring stable installation and preventing displacement after installation. This improves the accuracy of the frame body's installation position, thereby improving the accuracy of the coil's installation position and making operation more reliable. The frame body includes a first frame body and a second frame body that are spliced ​​together. The first frame body and the second frame body have the same structure, and only one mold is needed to produce the first frame body and the second frame body, saving mold opening costs. During glue pouring, the temperature of the glue will cause the frame body to expand and contract due to heat. The frame body will expand outward and deform to a certain extent. This deformation will compress the coil, making the coil more securely fixed.

[0032] In addition, this utility model also provides an electric motor, which includes the above-mentioned coil frame structure. This electric motor also has the same beneficial effects as the above-mentioned coil frame structure, which will not be described in detail here.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A coil former structure adapted to be arranged on a stator (1) of an electric machine, characterized in that The coil skeleton structure comprises a hollow skeleton body (2), the stator (1) is provided with a protrusion (101), the inside of the skeleton body (2) is provided with a plug-in slot (201) suitable for plugging with the protrusion (101), the outer side wall (210) of the skeleton body (2) is provided with a coil (3), the two ends of the skeleton body (2) are respectively provided with a first limiting block (21) and a second limiting block (22), and the coil (3) is positioned between the first limiting block (21) and the second limiting block (22).

2. The coil former structure of claim 1, wherein The outer side wall (210) is annular, and the coil (3) is wound on the outer side wall (210).

3. The coil former structure of claim 2, wherein, An arc surface (211) is arranged at the corner of the outer side wall (210).

4. The coil former structure of claim 1, wherein The stator (1) is annular, the stator (1) is provided with an annular inner side wall (102), the protrusion (101) is provided with a plurality of protrusions (101), and the plurality of protrusions (101) are annularly distributed on the inner side wall (102); the skeleton body (2) is provided with a plurality of skeleton bodies (2) and is plugged with the protrusion (101) one by one.

5. The coil former structure of claim 4, wherein, The side of the skeleton body (2) close to the inner side wall (102) is provided with a mounting clamping groove (20), and the inner side wall (102) is clamped in the mounting clamping groove (20).

6. The coil former structure of claim 4, wherein, The first limiting block (21) is arranged at one end of the skeleton body (2) close to the stator (1), the second limiting block (22) is arranged at one end of the skeleton body (2) away from the stator (1), the axial direction of the stator (1) is a first direction, the first limiting block (21) comprises a first extension (212) and a second extension (213), the first extension (212) extends out of the skeleton body (2) along the first direction, and the second extension (213) extends out of the skeleton body (2) along a second direction perpendicular to the first direction.

7. The coil former structure of claim 6, wherein, The second limiting block (22) extends out of the skeleton body (2) along the first direction, and the second limiting block (22) is symmetrically provided with two.

8. The coil former structure of claim 1, wherein, The coil (3) has a wire leading end (31), and the first limiting block (21) is provided with a positioning slot (214) for positioning the wire leading end (31).

9. The coil former structure of any of claims 1-8, wherein, The skeleton body (2) comprises a first skeleton body (23) and a second skeleton body (24) spliced together, the first skeleton body (23) and the second skeleton body (24) have the same structure, the first skeleton body (23) is provided with a first clamping block (231), the second skeleton body (24) is provided with a first clamping groove (241) corresponding to the first clamping block (231), the second skeleton body (24) is provided with a second clamping block (242), and the first skeleton body (23) is provided with a second clamping groove (232) corresponding to the second clamping block (242), the skeleton body (2) is made of insulating material, and the coil (3) is provided with a potting glue (4).

10. An electric machine characterized by The coil skeleton structure comprises a hollow skeleton body (2), the stator (1) is provided with a protrusion (101), the inside of the skeleton body (2) is provided with a plug-in slot (201) suitable for plugging with the protrusion (101), the outer side wall (210) of the skeleton body (2) is provided with a coil (3), the two ends of the skeleton body (2) are respectively provided with a first limiting block (21) and a second limiting block (22), and the coil (3) is positioned between the first limiting block (21) and the second limiting block (22).

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