Winding fixing structure

Abstract

The utility model discloses a winding fixing structure, which belongs to the technical field of winding fixing structures, and comprises a base, a stator winding and a fastener, the base sinks downwards to form a mounting cavity, the base is provided with at least one mounting groove, and the mounting groove is arranged close to the outer edge of the mounting cavity and is communicated with the mounting cavity; a limiting groove and a mounting hole are formed in the mounting groove; the stator winding is installed in the installation cavity, the stator winding is at least provided with one clamping block, the clamping block is at least partially located in the limiting groove, and the clamping block is matched with the limiting groove in the circumferential direction of the stator winding; the first end of the fastener penetrates through the mounting hole, and the second end of the fastener is matched with the clamping block in the axial direction of the stator winding. Through cooperation of the clamping blocks and the limiting grooves, the stator winding is limited to move in the circumferential direction. The first ends of the fasteners are installed in the installation holes, and the second ends of the fasteners are used for being matched with the clamping blocks to limit the clamping blocks to move in the axial direction of the stator winding, so that the stability of the stator winding on the machine base can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of electric motors, and in particular to a winding fixing structure. Background Technology

[0002] Existing motors generally include a frame, stator windings, and a rotor. The rotor is rotatably mounted on the frame and cooperates with the stator. The main function of the stator windings is to generate a rotating magnetic field and drive the rotor to rotate. The stator windings are usually composed of multiple coil groups. As the power heart of the permanent magnet synchronous gate motor, the stability of its installation on the frame largely determines the motor's service life and reliability.

[0003] The current stator winding assembly process has high assembly requirements, is not easy to position, has a low degree of automation, and is prone to loosening, which in turn affects the reliability of the motor. Therefore, there is still room for improvement in the assembly of existing stator windings. Summary of the Invention

[0004] The purpose of this invention is to improve the existing stator windings, which are difficult to position and prone to loosening during assembly, and to provide a winding fixing structure.

[0005] The technical solutions for achieving the above objectives include the following:

[0006] The winding fixing structure includes:

[0007] The base is recessed downward to form a mounting cavity. The base is provided with at least one mounting groove, which is located near the outer edge of the mounting cavity and communicates with the mounting cavity. The mounting groove has a limiting groove and a mounting hole.

[0008] A stator winding is installed in an installation cavity. The stator winding is provided with at least one locking block. The locking block is at least partially located in a limiting groove. In the circumferential direction of the stator winding, the locking block cooperates with the limiting groove.

[0009] And a fastener, wherein the mounting hole allows the first end of the fastener to pass through, and the second end of the fastener engages with a locking block in the axial direction of the stator winding.

[0010] In one embodiment, the shape of the locking block corresponds to the shape of the limiting groove, the locking block has a relief groove, and the outer edge of the relief groove corresponds to the outer edge of the mounting hole; the first end of the fastener is threaded into the mounting hole, and the second end of the fastener is used to abut against the locking block.

[0011] In one embodiment, the locking block is at least partially arc-shaped, the locking block has a first outer arc surface that connects to the outer edge of the clearance groove; the limiting groove has a first inner arc surface that abuts against the first outer arc surface; the mounting groove has a second outer arc surface, the clearance groove has a second inner arc surface that abuts against the second outer arc surface.

[0012] In one embodiment, the depth of the mounting hole is greater than the depth of the limiting groove, and the thickness of the locking block is equal to the depth of the limiting groove.

[0013] In one embodiment, the stator winding includes a winding bobbin and an iron core, the iron core being interference-fitted with the mounting cavity, and the winding bobbin being mounted on the iron core; the iron core has multiple winding supports, the winding bobbin has a support body and multiple insulating shells, the multiple insulating shells being mounted on the support body, the insulating shells being sleeved on the winding supports, and the locking block being disposed in the circumferential direction of the support body.

[0014] In one embodiment, a plurality of the winding supports are equidistantly distributed along the circumference of the iron core, and a plurality of the insulating shells are equidistantly distributed along the circumference of the support body, wherein the number of the winding supports corresponds to the number of the insulating shells.

[0015] In one embodiment, the stator winding further includes a support pad installed in the mounting cavity, the support pad abutting against a first end of the iron core, and the winding frame abutting against a second end of the iron core.

[0016] In one embodiment, a receiving cavity is formed between the support pad and the insulating shell, the winding support is disposed in the receiving cavity, and the outer wall of the winding support is fitted with the inner wall of the insulating shell.

[0017] In one embodiment, there are at least two card blocks, which are arranged opposite each other with respect to the center of the stator winding, and the number of card blocks corresponds to the number of mounting slots.

[0018] In one embodiment, the card blocks are four in number and are equidistantly distributed along the circumference of the stator winding.

[0019] The technical solution provided by this utility model has the following advantages and effects:

[0020] During installation, the stator winding is secured within the mounting cavity, with the locking block located within the limiting groove. The locking block engages with the limiting groove to restrict the stator winding's circumferential movement. The first end of a fastener is installed in the mounting hole, and the second end engages with the locking block to restrict its axial movement. This improves the stability of the stator winding on the machine frame. Furthermore, positioning is simple: align the locking block with the limiting groove, then secure it with the fastener to achieve the installation of the stator winding onto the machine frame. Once the locking block is positioned via the mounting groove, installation to the machine frame can be quickly completed, simplifying the stator winding installation process and addressing the existing problems of difficult positioning and loose assembly. Attached Figure Description

[0021] The accompanying drawings illustrate specific examples of the technical solutions described in this utility model, and together with the detailed embodiments, form part of the specification, serving to explain the technical solutions, principles, and effects of this utility model.

[0022] Unless otherwise specified or defined, the same reference numerals in different figures represent the same or similar technical features, and different reference numerals may be used to represent the same or similar technical features.

[0023] Figure 1 This is a schematic diagram of the winding fixing structure in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the base in one embodiment of the present invention;

[0025] Figure 3 This is one embodiment of the present invention. Figure 1 Enlarged view of point A;

[0026] Figure 4 This is one embodiment of the present invention. Figure 2 Enlarged view of point B;

[0027] Figure 5 This is a cross-sectional view of the winding fixing structure in one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the iron core in one embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of a winding skeleton in one embodiment of the present invention;

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Winding fixing structure; 1. Base; 11. Mounting cavity; 111. First groove; 112. Second groove; 12. Mounting slot; 121. Limiting slot; 13. Fastener; 14. Mounting hole; 2. Stator winding; 21. Winding frame; 211. Locking block; 2111. Clearance slot; 212. Support body; 213. Support pad; 214. Insulating shell; 215. Receiving cavity; 22. Iron core; 221. Winding support body. Detailed Implementation

[0032] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0033] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0034] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0035] It should be noted that when a component is considered "fixed" to another component, it can be directly fixed to the other component or there can be an intervening component; when a component is considered "connected" to another component, it can be directly connected to the other component or there can be an intervening component; when a component is considered "mounted" on another component, it can be directly mounted on the other component or there can be an intervening component; when a component is considered "placed" on another component, it can be directly placed on the other component or there can be an intervening component.

[0036] This utility model proposes a winding fixing structure 100, such as Figures 1 to 5 As shown, the device includes a base 1, a stator winding 2, and fasteners 13. The base 1 is recessed downward to form a mounting cavity 11. The base 1 is provided with at least one mounting groove 12, which is located near the outer edge of the mounting cavity 11 and communicates with the mounting cavity 11. The mounting groove 12 has a limiting groove 121 and a mounting hole 14. The stator winding 2 is installed in the mounting cavity 11. The stator winding 2 is provided with at least one locking block 211, which is at least partially located in the limiting groove 121. In the circumferential direction of the stator winding 2, the locking block 211 cooperates with the limiting groove 121. The mounting hole 14 allows the first end of the fastener 13 to pass through, and in the axial direction of the stator winding 2, the second end of the fastener 13 cooperates with the locking block 211.

[0037] Specifically, during installation, the stator winding 2 is secured in the mounting cavity 11, and the locking block 211 is located in the limiting groove 121. The locking block 211 cooperates with the limiting groove 121 to restrict the stator winding 2 from moving in its circumferential direction. The first end of the fastener 13 is installed in the mounting hole 14, and the second end of the fastener 13 is used to cooperate with the locking block 211 to restrict the locking block 211 from moving in the axial direction of the stator winding 2. This can improve the stability of the stator winding 2 on the frame 1. Moreover, in terms of positioning, simply align the locking block 211 with the limiting groove 121 so that the locking block 211 engages with the limiting groove 121, and then use the fastener 13 to fix the locking block 211, thereby realizing the installation of the stator winding 2 and the frame 1. After the locking block 211 of the stator winding 2 is positioned by the mounting groove 12, it can be quickly installed with the frame 1, simplifying the installation steps of the stator winding 2 and improving the existing problems of the stator winding 2 being difficult to position and prone to loosening during assembly.

[0038] Preferred, such as Figure 3 and Figure 4 As shown, the shape of the locking block 211 corresponds to the shape of the limiting groove 121. The locking block 211 has a relief groove 2111, the outer edge of which corresponds to the outer edge of the mounting hole 14. The first end of the fastener 13 is threaded into the mounting hole 14, and the second end of the fastener 13 is used to abut against the locking block 211. Specifically, the relief groove 2111 of the locking block 211 is used to abut against the first end of the fastener 13. When the first end of the fastener 13 is threaded into the mounting hole 14, the second end of the fastener 13 can abut against the fastener 13. Moreover, the outer edge of the relief groove 2111 corresponds to the outer edge of the mounting hole 14. Therefore, the outer wall of the locking block 211 can completely fit against the outer wall of the limiting groove 121, increasing the contact area between the locking block 211 and the limiting groove 121, and further improving the stability of the stator winding 2 on the frame 1.

[0039] Preferred, such as Figure 4 and Figure 7 As shown, the locking block 211 is at least partially arc-shaped. The locking block 211 has a first outer arc surface that connects to the outer edge of the clearance groove 2111. The limiting groove 121 has a first inner arc surface, and the first outer arc surface abuts against the first inner arc surface. The mounting groove 12 has a second outer arc surface, and the clearance groove 2111 has a second inner arc surface. The second outer arc surface abuts against the second inner arc surface. Specifically, the first outer arc surface abuts against the first inner arc surface, and the second outer arc surface abuts against the second inner arc surface, further increasing the contact area between the locking block 211 and the limiting groove 121.

[0040] Preferably, the depth of the mounting hole 14 is greater than the depth of the limiting groove 121, and the thickness of the locking block 211 is equal to the depth of the limiting groove 121. Specifically, when the locking block 211 engages with the limiting groove 121, the upper surface of the locking block 211 and the bottom surface of the mounting groove 12 are on the same plane, and the second end of the fastener 13 simultaneously abuts against the bottom surface of the mounting groove 12 and the upper surface of the locking block 211, thereby further fixing the position of the locking block 211 in the limiting groove 121 through the fastener 13.

[0041] In some embodiments, such as Figures 5 to 7 As shown, the stator winding 2 includes a winding frame 21 and an iron core 22. The mounting cavity 11 includes a first groove 111 and a second groove 112. The diameter of the second groove 112 is larger than the diameter of the first groove 111. The iron core 22 is installed in the first groove 111 with an interference fit. The winding frame 21 is installed in the second groove 112 and is mounted on the iron core 22. The iron core 22 has multiple winding supports 221. The winding frame 21 has a support body 212 and multiple insulating shells 214. The multiple insulating shells 214 are all mounted on the support body 212 and are sleeved on the outside of the winding support body 221. The locking block 211 is set in the circumferential direction of the support body 212. Specifically, the stator winding 2 consists of a winding frame 21 and an iron core 22. The winding frame 21 is mounted on the iron core 22, which supports the winding frame 21 and improves its structural strength. The winding frame 21 is generally made of insulating material and is typically used for winding the coil. Its core function is to provide insulation protection, preventing current from being directly conducted through the frame and ensuring the normal operation and safety of the electrical equipment. Furthermore, the insulating outer shell 214 of the winding frame 21 is fitted onto the winding support 221. The coil is wound on the insulating outer shell 214. Multiple insulating outer shells 214 cooperate with multiple winding supports 221 to improve the overall stability of the stator winding 2.

[0042] Preferred, such as Figure 6 and Figure 7As shown, multiple winding supports 221 are equidistantly distributed along the circumference of the iron core 22, and multiple insulating shells 214 are equidistantly distributed along the circumference of the support body 212. The number of winding supports 221 corresponds to the number of insulating shells 214. Specifically, the multiple insulating shells 214 correspond one-to-one with the multiple winding supports 221, and their equidistant arrangement is mainly to ensure the stable operation of the winding fixing structure 100 and reduce electromagnetic interference. The equidistant arrangement of the coil groups of the stator winding 2 can ensure the magnetic field balance of the winding fixing structure 100, thereby avoiding vibration and noise caused by unbalanced electromagnetic forces. When the coil groups are equidistantly arranged, the magnetic field distribution of the stator winding 2 is uniform, and the electromagnetic forces cancel each other out, ensuring the stable operation of the winding fixing structure 100. If the coil groups are not equidistantly arranged, it will lead to magnetic field imbalance and generate unbalanced electromagnetic forces. These forces will cause unstable operation of the winding fixing structure 100, and even lead to large vibrations and noise, affecting the service life and reliability of the winding fixing structure 100.

[0043] Preferred, such as Figure 7 As shown, the stator winding 2 also has a support pad 213, which is installed in the mounting cavity 11. The support pad 213 abuts against the first end of the iron core 22, and the winding frame 21 abuts against the second end of the iron core 22. Specifically, the support pad 213 is used to support the iron core 22, and the support pad 213 and the winding frame 21 are respectively disposed at both ends of the iron core 22 to protect the iron core 22, prevent the iron core 22 from being affected by the external environment, and improve its support stability.

[0044] Preferred, such as Figure 7 As shown, a receiving cavity 215 is formed between the support pad 213 and the insulating shell 214. The winding support 221 is disposed within the receiving cavity 215, and the outer wall of the winding support 221 is in contact with the inner wall of the insulating shell 214. By disposing of the winding support 221 within the receiving cavity 215, the winding support 221 serves to support the insulating shell 214, improving the structural stability of the insulating shell 214. At the same time, the insulating shell 214 prevents current from being directly conducted through the winding support 221.

[0045] Preferably, there are at least two locking blocks 211, which are arranged opposite each other with respect to the center of the stator winding 2, and the number of locking blocks 211 corresponds to the number of mounting slots 12.

[0046] Furthermore, such as Figure 1 and Figure 2 As shown, there are four locking blocks 211, which are equidistantly distributed along the circumference of the stator winding 2. Specifically, by equidistantly distributing four locking blocks 211 along the circumference of the stator winding 2, the number of fixed connection points between the stator winding 2 and the frame 1 can be increased, further improving the stability of the stator winding 2 after assembly with the frame 1.

[0047] When referencing drawings, new features are explained. To avoid redundant references to drawings that would make the description less concise, features already described will not be referenced again on the drawings if the description is clear.

[0048] The purpose of the above embodiments is to reproduce and derive the technical solution of this utility model by way of example, and to fully describe the technical solution, purpose and effect of this utility model. The purpose is to enable the public to have a more thorough and comprehensive understanding of the disclosed content of this utility model, and it is not intended to limit the protection scope of this utility model.

[0049] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A winding fixing structure, characterized in that, include: The base has a mounting cavity, and the base is provided with at least one mounting groove, which is located near the outer edge of the mounting cavity and communicates with the mounting cavity; the mounting groove has a limiting groove and a mounting hole. A stator winding is installed in an installation cavity. The stator winding is provided with at least one locking block. The locking block is at least partially located in a limiting groove. In the circumferential direction of the stator winding, the locking block cooperates with the limiting groove. And a fastener, wherein the mounting hole allows the first end of the fastener to pass through, and the second end of the fastener engages with a locking block in the axial direction of the stator winding.

2. The winding fixing structure as described in claim 1, characterized in that, The shape of the locking block corresponds to the shape of the limiting groove, and the locking block has a relief groove, the outer edge of which corresponds to the outer edge of the mounting hole; the first end of the fastener is threaded into the mounting hole, and the second end of the fastener is used to abut against the locking block.

3. The winding fixing structure as described in claim 2, characterized in that, The card block is at least partially arc-shaped, and the card block has a first outer arc surface that connects to the outer edge of the clearance groove; the limiting groove has a first inner arc surface that abuts against the first outer arc surface; the mounting groove has a second outer arc surface, and the clearance groove has a second inner arc surface that abuts against the second outer arc surface.

4. The winding fixing structure as described in claim 2, characterized in that, The depth of the mounting hole is greater than the depth of the limiting groove, and the thickness of the locking block is equal to the depth of the limiting groove.

5. The winding fixing structure as described in claim 1, characterized in that, The stator winding includes a winding bobbin and an iron core. The iron core is interference-fitted with the mounting cavity, and the winding bobbin is mounted on the iron core. The iron core has multiple winding supports, and the winding bobbin has a support body and multiple insulating shells. The multiple insulating shells are all mounted on the support body, and the insulating shells are sleeved on the winding supports. The locking block is disposed in the circumferential direction of the support body.

6. The winding fixing structure as described in claim 5, characterized in that, Multiple winding supports are equidistantly distributed along the circumference of the iron core, and multiple insulating shells are equidistantly distributed along the circumference of the support body. The number of winding supports corresponds to the number of insulating shells.

7. The winding fixing structure as described in claim 5, characterized in that, The stator winding also has a support pad, which is installed in the mounting cavity and abuts against the first end of the iron core, and the winding frame abuts against the second end of the iron core.

8. The winding fixing structure as described in claim 7, characterized in that, A cavity is formed between the support pad and the insulating shell, and the winding support is disposed in the cavity, with the outer wall of the winding support fitting against the inner wall of the insulating shell.

9. The winding fixing structure as described in any one of claims 1 to 8, characterized in that, The card block has at least two, and the two card blocks are arranged opposite each other with respect to the center of the stator winding. The number of card blocks corresponds to the number of mounting slots.

10. The winding fixing structure as described in claim 9, characterized in that, The card block has four blocks, which are equidistantly distributed along the circumference of the stator winding.

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