Motor coil wire-off protection tool
By designing a protective fixture for motor coil unloading, and using protective partitions and fasteners to fix the coil, the problems of damage and low efficiency during coil unloading were solved, thus achieving coil protection and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENHUA BAORIXILE ENERGY CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-21
AI Technical Summary
The coil is damaged due to direct contact with the stator core during the unwinding process, and the production efficiency is low.
A protective fixture for motor coil unwinding was designed, including a protective partition and fasteners. The coil is engaged with the groove formed by the central column and side columns. The protective partition, made of insulating rigid material, is fixed to the stator core to prevent direct contact between the coil and the stator core. The entire fixture is secured by the stator end plate and fasteners.
It effectively protects the coil from damage, improves the accuracy and production efficiency of the unloading process, simplifies the operation process, and improves assembly precision and motor performance.
Smart Images
Figure CN224537996U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of motor manufacturing and processing technology, specifically relating to a motor coil unwinding protection tool. Background Technology
[0002] Currently, during the stator coil installation process (i.e., the coil is installed onto the stator core), there is no isolation between the coil and the stator core. Therefore, the coil, especially its ends, inevitably comes into direct contact with the teeth of the stator core, causing damage to the coil and even short circuits or other motor malfunctions during operation, affecting motor performance and service life. Secondly, the coil needs to be accurately positioned during the installation process. Workers need to use measuring tools to measure the coil's installation position, which reduces production efficiency. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies, namely, the damage caused by the direct contact between the coil and the stator core and the low production efficiency.
[0004] In view of this, the present invention provides a protective fixture for motor coil unwinding. Using this fixture can effectively protect the coil from damage during the coil unwinding process, while improving production efficiency.
[0005] Specifically, the following technical solutions are included:
[0006] According to an embodiment of this application, a motor coil unwinding protection fixture is provided, including a protective partition and a first fastener; a central column and two side columns are provided on the protective partition; the central column is sleeved on a tooth of the stator core, and two grooves are formed between the two side columns and the central column; the opening direction of the groove is consistent with the opening direction of the coil slot of the stator core, and is used to engage with the coil sleeved on the central column; the protective partition is fixed to the stator core by the first fastener.
[0007] Furthermore, a first slot is provided on the side of the protective partition near the yoke of the stator core; the shape of the first slot is adapted to the shape of the yoke.
[0008] Preferably, the first fastener includes a first threaded pin and a first nut; the first threaded pin passes sequentially through one side wall of the first slot, the yoke, and the other side wall of the first slot; the two first nuts are respectively screwed onto the two ends of the first threaded pin.
[0009] Furthermore, it also includes two stator end plates and a second fastener; the two stator end plates are respectively disposed on two side surfaces of the yoke and are fixed to the stator core by the first fastener and the second fastener.
[0010] Furthermore, a second slot adapted to the shape of the stator end plate is formed on the groove wall of the first slot.
[0011] Furthermore, the first fastener passes sequentially through one side of the first slot wall, one side of the stator end plate, the yoke, the other side of the stator end plate, and the other side of the first slot wall.
[0012] Preferably, the second fastener includes a second threaded pin and a second nut; the second threaded pin passes sequentially through the stator end plate on one side, the yoke, and the stator end plate on the other side; the two second nuts are respectively screwed onto the two ends of the second threaded pin.
[0013] Furthermore, an arc-shaped chamfer is provided on the inner side of the opening end of the groove.
[0014] Furthermore, there are multiple protective partitions; the multiple protective partitions are arranged in parallel, and two adjacent side columns of adjacent protective partitions are connected to each other.
[0015] Furthermore, the protective partition is made of an insulating rigid material.
[0016] Compared with the prior art, the present invention has at least the following beneficial effects:
[0017] The tooling described in this application completely isolates the coil from the stator core, ensuring that the coil is protected from scratches, collisions, and other damage during the unwinding process. Furthermore, this tooling ensures that the coil is accurately embedded in the designated position within the coil slot during unwinding, simplifying the process, making it more standardized and regulated, and improving operation efficiency. It also reduces errors caused by manual operation, improving assembly precision while ensuring the overall performance of the motor and enhancing product quality. Attached Figure Description
[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. In the drawings:
[0019] Figure 1 This is a schematic diagram of the structure of a tooling according to an embodiment of this application;
[0020] Figure 2This is a top view of a tooling according to an embodiment of this application;
[0021] Figure 3 This is a schematic diagram of the stator core of an installation unit according to an embodiment of this application.
[0022] Figure 4 This is a schematic diagram of the overall structure of the stator core and coil in an embodiment of this application.
[0023] The reference numerals in the attached figures are as follows:
[0024] 1-Protective partition; 11-Central column; 12-Side column; 13-Groove; 131-Chamfer; 14-First slot; 15-Second slot; 2-Stator end plate; 31-First threaded pin; 32-Second threaded pin; 41-First nut; 42-Second nut; 5-Stator core; 51-Gear; 52-Yoke; 53-Coil slot; 6-Coil. Detailed Implementation
[0025] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.
[0026] In view of this, according to an embodiment of this application, a motor coil unwinding protection fixture is provided, such as... Figure 1 , Figure 2 and Figure 3 As shown, the device includes a protective partition 1 and a first fastener; a central column 11 and two side columns 12 are provided on the protective partition 1; the central column 11 is sleeved on a tooth 51 of the stator core 5, and two grooves 13 are formed between the two side columns 12 and the central column 11 respectively; the opening direction of the grooves 13 is consistent with the opening direction of the coil grooves 53 of the stator core 5, and is used to engage with the coils 6 sleeved on the central column 11; the protective partition 1 is fixed to the stator core 5 by the first fastener.
[0027] Specifically, such as Figure 4As shown, the stator core 5 includes an annular yoke 52 and a plurality of teeth 51 evenly arranged inside the annular yoke 52. The coil unwinding process involves fitting a coil 6 onto each tooth 51. In this design, the central post 11 is first fitted onto the tooth 51, and then the coil 6 is fitted onto the central post 11, completely isolating the coil 6 from the tooth 51. Simultaneously, the two grooves 13 not only secure the two sides of the coil 6 respectively, but also serve to position the coil 6. This eliminates the need to measure the position of each coil 6 during operation; simply inserting the coil 6 into the groove 13 completes the positioning. For the entire stator core 5, a protective partition 1 needs to be installed on each tooth 51 to complete the overall tooling installation.
[0028] Furthermore, in one embodiment, such as Figure 1 , Figure 3 As shown, a first slot 14 is provided on the side of the protective partition 1 near the yoke 52 of the stator core 5; the shape of the first slot 14 is adapted to the shape of the yoke 52.
[0029] Preferably, in specific embodiments, such as Figure 1 As shown, the first fastener includes a first threaded pin 31 and a first nut 41; the first threaded pin 31 passes through one side wall of the first slot 14, the yoke 52 and the other side wall of the first slot 14 in sequence; the two first nuts 41 are respectively screwed to the two ends of the first threaded pin 31.
[0030] Specifically, in order to fix the protective partition 1 to the stator core 5 without affecting the performance of the stator coil, this solution provides a first slot 14 on the protective partition 1, and the two side walls of the first slot 14 respectively fit against the two side surfaces of the yoke 52. A first through hole is provided on the yoke 52, and the first threaded pin 31 passes through the two side walls of the first slot 14 and the first through hole, and is fixed by the first nuts 41 at both ends, so that the protective partition 1 is fixed to the stator core 5. For the entire stator core 5, each protective partition 1 needs to be fixed through the above process, that is, the number of first through holes is the same as the number of teeth 51.
[0031] Furthermore, in one embodiment, such as Figure 1 , Figure 3 As shown, it also includes two stator end plates 2 and a second fastener; the two stator end plates 2 are respectively disposed on two side surfaces of the yoke 52 and are fixed to the stator core 5 by the first fastener and the second fastener.
[0032] Specifically, to better protect the stator core 5 and more stably fix the protective partition 1, this solution provides two annular stator end plates 2 on the two side surfaces of the yoke 52. The first fastener simultaneously fixes the protective partition 1 and the stator end plates 2 to the stator core 5; the second fastener fixes the stator end plates 2 and the stator core 5 at a position avoiding the first slot 14. Therefore, multiple protective partitions 1 are connected together through the stator end plates 2 to form a tooling assembly, and the connection between the tooling assembly and the stator core 5 is more stable.
[0033] Furthermore, in one embodiment, such as Figure 1 As shown, a second slot 15 adapted to the shape of the stator end plate 2 is provided on the slot wall of the first slot 14.
[0034] Furthermore, in one embodiment, such as Figure 1 As shown, the first fastener passes sequentially through one side of the groove wall of the first slot 14, one side of the stator end plate 2, the yoke 52, the other side of the stator end plate 2, and the other side of the groove wall of the first slot 14.
[0035] Specifically, the stator end plate 2 is attached to the side surface of the yoke 52, and the second slot 15 allows the first slot 14 to fit tightly against the stator end plate 2 and the side surface of the yoke 52. The first threaded pin 31 passes through the two side walls of the first slot 14, the two stator end plates 2, and the first through hole, and is fixed by the first nuts 41 at both ends.
[0036] Preferably, in specific embodiments, such as Figure 1 As shown, the second fastener includes a second threaded pin 32 and a second nut 42; the second threaded pin 32 passes sequentially through the stator end plate 2 on one side, the yoke 52 and the stator end plate 2 on the other side; the two second nuts 42 are respectively screwed to the two ends of the second threaded pin 32.
[0037] Specifically, a second through hole is formed between every two first slots 14 on the yoke 52, meaning the number of second through holes is the same as the number of teeth 51. The second threaded pin 32 passes through the two stator end plates 2 and the second through holes, and is fixed by the second nuts 42 at both ends.
[0038] Furthermore, in one embodiment, such as Figure 2 As shown, an arc-shaped chamfer 131 is provided on the inner side of the opening end of the groove 13.
[0039] Specifically, the chamfer 131 can largely protect the coil from scratches, collisions, and other damage.
[0040] Furthermore, in one embodiment, there are multiple protective partitions 1; the multiple protective partitions 1 are arranged in parallel, and two adjacent side posts 12 of adjacent protective partitions 1 are connected to each other.
[0041] Specifically, for the entire stator core 5, a protective partition 1 needs to be set on each tooth 51. Therefore, this solution connects adjacent protective partitions 1. On the one hand, this eliminates gaps between adjacent protective partitions 1, making the overall fixture more stable; on the other hand, multiple protective partitions 1 can be installed simultaneously, improving assembly efficiency.
[0042] Furthermore, in one embodiment, the protective partition 1 is made of an insulating rigid material.
[0043] Specifically, due to the functionality of the stator coil, the protective partition 1 must be insulated; secondly, the rigid material must protect the coil 6 from damage while providing sufficient clamping force. In practice, the protective partition 1 is made of 3240 epoxy board, but this material choice is not a limitation on the scope of protection of this application.
[0044] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A motor coil unwinding protection fixture, characterized in that, Includes a protective partition (1) and a first fastener; A central column (11) and two side columns (12) are provided on the protective partition (1); The central column (11) is sleeved on a tooth (51) of the stator core (5), and two side columns (12) form two grooves (13) between the central column (11); The opening direction of the groove (13) is consistent with the opening direction of the coil groove (53) of the stator core (5), and is used to engage with the coil (6) sleeved on the central column (11). The protective partition (1) is fixed to the stator core (5) by the first fastener.
2. The motor coil unwinding protection fixture according to claim 1, characterized in that, A first slot (14) is provided on the side of the protective partition (1) near the yoke (52) of the stator core (5); The shape of the first slot (14) is adapted to the shape of the yoke (52).
3. The motor coil unwinding protection fixture according to claim 2, characterized in that, The first fastener includes a first threaded pin (31) and a first nut (41); The first threaded pin (31) passes through one side of the groove wall of the first slot (14), the yoke (52) and the other side of the groove wall of the first slot (14) in sequence; The two first nuts (41) are respectively screwed to both ends of the first threaded pin (31).
4. The motor coil unwinding protection fixture according to claim 2, characterized in that, It also includes two stator end plates (2) and a second fastener; The two stator end plates (2) are respectively disposed on the two side surfaces of the yoke (52) and fixed to the stator core (5) by the first fastener and the second fastener.
5. The motor coil unwinding protection fixture according to claim 4, characterized in that, A second slot (15) adapted to the shape of the stator end plate (2) is provided on the groove wall of the first slot (14).
6. The motor coil unwinding protection fixture according to claim 4, characterized in that, The first fastener passes sequentially through one side of the groove wall of the first slot (14), one side of the stator end plate (2), the yoke (52), the other side of the stator end plate (2), and the other side of the groove wall of the first slot (14).
7. The motor coil unwinding protection fixture according to claim 4, characterized in that, The second fastener includes a second threaded pin (32) and a second nut (42); The second threaded pin (32) passes sequentially through the stator end plate (2) on one side, the yoke (52) and the stator end plate (2) on the other side; The two second nuts (42) are screwed onto the two ends of the second threaded pin (32).
8. The motor coil unwinding protection fixture according to claim 1, characterized in that, An arc-shaped chamfer (131) is provided on the inner side of the opening end of the groove (13).
9. The motor coil unwinding protection fixture according to claim 1, characterized in that, The protective partition (1) is multiple; Multiple protective partitions (1) are arranged in parallel, and two adjacent side posts (12) of adjacent protective partitions (1) are connected to each other.
10. The motor coil unwinding protection fixture according to claim 1, characterized in that, The protective partition (1) is made of an insulating rigid material.