Skeleton assembly and electric machine having the same

Abstract

The utility model provides a kind of skeleton assembly and motor with it, the support structure of skeleton assembly has support part and plug-in recess, support part is used for supply wiring harness winding;Connecting structure, it is inserted into plug-in recess and with plug-in recess interference fit, connecting structure has connecting recess, connecting recess is used to accommodate pin structure and with pin structure interference fit, the outer periphery of connecting structure has connecting protrusion;Wherein, the material hardness of connecting protrusion is greater than the material hardness of the part of support structure that forms plug-in recess, to make connecting protrusion extrude the inner wall of plug-in recess in the process that connecting structure is inserted into plug-in recess, and make the part of inner wall of plug-in recess and connecting protrusion contact deformation as extrusion recess that is adapted to connecting protrusion.The utility model effectively solves the problem of poor structure stability of pin of motor stator in the prior art.

Description

Technical Field

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

[0002] Currently, with the increasing market for robotic applications, the demand for servo motors is also growing. Servo motor stators commonly utilize concentrated winding technology. This technology primarily employs a plastic frame to support the winding copper wires and provide insulation between them and the stator core. Simultaneously, the frame contains at least two metal pins with good conductivity. These pins connect to the beginning and end of the winding copper wires, respectively, and then to the circuit board for power transmission and signal control. Therefore, the structural stability of these pins is extremely important.

[0003] However, because the frame is made of plastic, which is relatively soft, the pins are prone to tilting when workers are winding copper wire around them. This results in poor structural stability of the pins, which in turn reduces the winding quality and production efficiency of the motor stator. Utility Model Content

[0004] The main objective of this invention is to provide a frame assembly and a motor having the same, in order to solve the problem of poor structural stability of the stator pins in the existing technology.

[0005] To achieve the above objectives, according to one aspect of the present invention, a skeleton assembly is provided, comprising: a support structure having a support portion and a insertion recess, the support portion being used for winding a wire harness; a connecting structure extending into the insertion recess and interlocking with the insertion recess, the connecting structure having a connecting recess for accommodating a pin structure and interlocking with the pin structure, the outer peripheral surface of the connecting structure having a connecting protrusion; wherein, the material hardness of the connecting protrusion is greater than the material hardness of the portion of the support structure surrounding the insertion recess, so that during the process of the connecting structure extending into the insertion recess, the connecting protrusion presses against the inner wall of the insertion recess, and the portion of the inner wall of the insertion recess in contact with the connecting protrusion is deformed into a pressing recess adapted to the connecting protrusion.

[0006] Furthermore, the connecting structure is columnar, with multiple connecting protrusions arranged sequentially around the central axis of the connecting structure.

[0007] Furthermore, the orthographic projection of the connecting structure onto the supporting structure is set as a regular polygon, and there is a maximum distance H between the outer surface of the connecting protrusion and the outer surface of the connecting structure. The maximum distance H and the side length L of the regular polygon satisfy the following condition: 0.1L≤H≤0.5L.

[0008] Furthermore, the cross-section of the connecting protrusion is one of a triangle, a semicircle, or a polygon.

[0009] Furthermore, when the cross-section of the connecting protrusion is triangular, the vertex angle A of the triangle furthest from the connecting structure satisfies: 60°≤A≤90°.

[0010] Furthermore, the support structure includes: at least two limiting structures disposed at opposite ends of the support portion, and a receiving space formed between the at least two limiting structures and at least a portion of the outer surface of the support portion, the receiving space being used to receive the wire harness.

[0011] Furthermore, the limiting structure is arc-shaped, with the arc-shaped protrusion facing the support part.

[0012] Furthermore, the support structure also includes a load-bearing structure, which is disposed on at least one limiting structure and has a plug-in recess; wherein, there are multiple plug-in recesses, which are spaced apart along a first preset direction; there are multiple connecting structures, which are disposed one-to-one with the multiple plug-in recesses.

[0013] Furthermore, the area S1 of the receiving cross section of the connecting recess used to accommodate the pin structure and the cross-sectional area S2 of the pin structure satisfy the following condition: 0.72S2≤S1≤0.81S2.

[0014] According to another aspect of the present invention, an electric motor is provided, the electric motor including a frame assembly, the frame assembly being the aforementioned frame assembly.

[0015] Applying the technical solution of this utility model, the support structure of the skeleton assembly has a support portion and a insertion recess. The support portion is used for winding the wire harness. The connecting structure extends into the insertion recess and is interference-fitted with it. The connecting structure has a connecting recess for accommodating the pin structure and is interference-fitted with it. The outer peripheral surface of the connecting structure has a connecting protrusion. The material hardness of the connecting protrusion is greater than the material hardness of the portion of the support structure surrounding the insertion recess. This allows the connecting protrusion to press against the inner wall of the insertion recess during the insertion of the connecting structure, causing the inner wall of the insertion recess to deform into a pressing recess that matches the connecting protrusion. Thus, when the worker winds the copper wire onto the support portion, the interference fit between the pin structure and the connecting recess of the connecting structure ensures a stable connection between the pin structure and the connecting structure. Meanwhile, during the process of the connecting structure, along with the pin structure, extending into the insertion recess and interfering with it, the connecting protrusion on the connecting structure can press against the inner wall of the insertion recess, forming a compression recess that accommodates the connecting protrusion. This allows the connecting protrusion to embed into the inner wall of the insertion recess, achieving an interference fit between the connecting structure and the insertion recess while also increasing the friction between them. This doubly strengthens the connection stability between the connecting structure and the insertion recess, thereby enhancing the connection stability between the pin structure and the support structure. It also prevents the copper wire from winding around the pin structure, causing the pin to become skewed, ensuring the structural stability of the pin structure, and thus solving the problem of poor structural stability of the pins in the motor stator in the prior art. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 An exploded view of an embodiment of the skeleton assembly according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A side view of the skeleton component in the image;

[0019] Figure 3 It shows Figure 1 A top view of the skeleton components in the image;

[0020] Figure 4 It shows Figure 1 A three-dimensional structural diagram of the connection structure of the skeleton components in the diagram;

[0021] Figure 5 It shows Figure 1The orthographic projection of the connection structure of the skeleton components onto the supporting structure.

[0022] The above figures include the following reference numerals:

[0023] 10. Support structure; 11. Support part; 12. Limiting structure; 13. Bearing structure; 131. Insertion recess;

[0024] 20. Connecting structure; 21. Connecting recess; 22. Connecting protrusion;

[0025] 30. Pin structure. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] To address the problem of poor structural stability of the stator pins in existing motor technologies, this application provides a frame assembly and a motor having the same.

[0030] like Figures 1 to 5 As shown, the skeleton assembly includes a support structure 10 and a connecting structure 20. The support structure 10 has a support portion 11 and a insertion recess 131, the support portion 11 being used for winding the wire harness. The connecting structure 20 extends into the insertion recess 131 and is interference-fitted with the insertion recess 131. The connecting structure 20 has a connecting recess 21, which is used to accommodate the pin structure 30 and is interference-fitted with the pin structure 30. The outer peripheral surface of the connecting structure 20 has a connecting protrusion 22. The material hardness of the connecting protrusion 22 is greater than the material hardness of the portion of the support structure 10 that surrounds the insertion recess 131, so that during the process of the connecting structure 20 extending into the insertion recess 131, the connecting protrusion 22 presses against the inner wall of the insertion recess 131, and the portion of the inner wall of the insertion recess 131 that contacts the connecting protrusion 22 is deformed into a pressing recess adapted to the connecting protrusion 22.

[0031] Applying the technical solution of this embodiment, the support structure 10 of the skeleton assembly has a support portion 11 and a insertion recess 131. The support portion 11 is used for winding the wire harness. The connecting structure 20 extends into the insertion recess 131 and is interference-fitted with the insertion recess 131. The connecting structure 20 has a connecting recess 21, which is used to accommodate the pin structure 30 and is interference-fitted with the pin structure 30. The outer peripheral surface of the connecting structure 20 has a connecting protrusion 22. The material hardness of the connecting protrusion 22 is greater than the material hardness of the portion of the support structure 10 that surrounds the insertion recess 131, so that during the process of the connecting structure 20 extending into the insertion recess 131, the connecting protrusion 22 presses against the inner wall of the insertion recess 131, and the portion of the inner wall of the insertion recess 131 that contacts the connecting protrusion 22 is deformed into a pressing recess adapted to the connecting protrusion 22. In this way, the workers wrap the copper wire around the support part 11. At the same time, the pin structure 30 is interference-fitted with the connecting recess 21 of the connecting structure 20 to ensure the connection stability between the pin structure 30 and the connecting structure 20. Meanwhile, during the process of the connecting structure 20, carrying the pin structure 30, extending into the insertion recess 131 and interfering with it, the connecting protrusion 22 on the connecting structure 20 can press the inner wall of the insertion recess 131, causing the inner wall of the insertion recess 131 to form a pressing recess that accommodates the connecting protrusion 22. This allows the connecting protrusion 22 to embed into the inner wall of the insertion recess 131, achieving an interference fit between the connecting structure 20 and the insertion recess 131 while also increasing the friction between them. This doubly strengthens the connection stability between the connecting structure 20 and the insertion recess 131, thereby enhancing the connection stability between the pin structure 30 and the support structure 10. It also prevents the copper wire from getting tangled on the pin structure 30, thus ensuring the structural stability of the pin structure 30 and solving the problem of poor structural stability of the pins in the motor stator in the prior art.

[0032] In this embodiment, both the connecting structure 20 and the pin structure 30 are supported by metal materials.

[0033] In this embodiment, the support structure 10 is made of plastic material.

[0034] In this embodiment, the wire harness is made of phosphor bronze.

[0035] like Figure 1 and Figure 2As shown, the connecting structure 20 is columnar, with multiple connecting protrusions 22 arranged sequentially around the central axis of the connecting structure 20. This increases the contact area between the connecting protrusions 22 and the inner wall of the insertion recess 131, resulting in multiple compression recesses on the inner wall of the insertion recess 131. This further enhances the friction between the connecting structure 20 and the insertion recess 131 while maintaining an interference fit, thus improving the connection stability of the connecting structure 20 and the structural stability of the pin structure 30. This prevents the pin structure 30 from tilting and causing cracking of the support structure 10, extending the service life of the support structure 10. Simultaneously, the arrangement of multiple connecting protrusions 22 forms an effective heat dissipation network. During welding, heat can be transferred to the support structure 10 through the multiple connecting protrusions 22, preventing localized overheating of the support structure 10, reducing the risk of burns, improving the heat dissipation efficiency of the frame assembly, and extending the service life of the frame assembly.

[0036] like Figure 1 and Figure 3 As shown, the orthographic projection of the connecting structure 20 onto the supporting structure 10 is a regular polygon. The outer surface of the connecting protrusion 22 and the outer surface of the connecting structure 20 have a maximum distance H. The maximum distance H and the side length L of the regular polygon satisfy the condition: 0.1L ≤ H ≤ 0.5L. This regular polygonal projection of the connecting structure 20 onto the supporting structure 10 ensures a moderate and uniformly distributed contact area between them, effectively dispersing external forces and preventing damage to the supporting structure 10 due to localized stress, thus extending its service life. Simultaneously, the proportional relationship between the maximum distance H and the side length L of the regular polygon ensures that the size of the connecting protrusion 22 matches the size of the connecting structure 20 itself, guaranteeing the adaptability of the connecting protrusion 22. This, in turn, ensures the stability of the connection between the connecting structure 20 and the supporting structure 10, as well as the reliability of heat conduction between them, thus guaranteeing the heat dissipation reliability of the frame assembly.

[0037] In this embodiment, the connecting structure 20 is arranged in the shape of a cuboid, and the orthographic projection of the connecting structure 20 on the supporting structure 10 is a square, that is, the cross-section of the connecting structure 20 is a square.

[0038] Specifically, the shape of the connecting recess 21 matches that of the connecting structure 20.

[0039] like Figure 4 and Figure 5As shown, the cross-section of the connecting protrusion 22 is one of a triangle, a semicircle, or a polygon. This design, on the one hand, makes the processing of the connecting protrusion 22 more flexible and diverse, improving the processing flexibility of the workers; on the other hand, it allows the connecting protrusion 22 to adapt to support structures 10 of different specifications and materials, ensuring the reliability of the connection between the connecting structure 20 and the support structure 10.

[0040] like Figure 5 As shown, when the cross-section of the connecting protrusion 22 is triangular, the apex angle A of the triangle furthest from the connecting structure 20 satisfies: 60°≤A≤90°. This arrangement facilitates better embedding of the connecting protrusion 22 into the inner wall of the insertion recess 131, improving the convenience and reliability of the connection between the connecting structure 20 and the support structure 10. Simultaneously, this arrangement optimizes the heat transfer path, maximizing heat dispersion during the transfer from the pin structure 30 to the connecting structure 20, and then from the connecting protrusion 22 to the support structure 10, thus enhancing the protection of the support structure 10. Furthermore, the aforementioned angle arrangement improves the processing flexibility and versatility for workers.

[0041] like Figure 1 As shown, the support structure 10 includes at least two limiting structures 12. The at least two limiting structures 12 are disposed at opposite ends of the support portion 11, and a receiving space is formed between the at least two limiting structures 12 and at least a portion of the outer surface of the support portion 11. This receiving space is used to accommodate the wire harness. Thus, when the wire harness is wound around the support portion 11, the limiting structures 12 at opposite ends of the support portion 11 can limit and stop the wire harness, preventing it from falling off the support portion 11 and ensuring the reliability of the wire harness winding. Simultaneously, the receiving space can accommodate the wire harness, ensuring the neatness of the winding and preventing the wire harness from becoming tangled or rubbing due to vibration during motor operation, reducing the risk of wire harness damage and improving the reliability and safety of the motor.

[0042] In this example, the number of limit structures 12 is two.

[0043] It should be noted that the number of limit structures 12 is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, the number of limit structures 12 can be three, five, six, eight, or more.

[0044] like Figure 1 and Figure 3As shown, the limiting structure 12 is arc-shaped, with the arc-shaped protrusion facing the support portion 11. This arc-shaped limiting structure 12 allows for gentler contact with the wire harness, avoiding damage and ensuring the safety of the wire harness winding. Simultaneously, compared to a straight limiting structure 12, the arc-shaped limiting structure 12 more effectively balances stress distribution, reduces localized stress concentration, lowers the risk of damage to the support structure 10, and ensures the long-term stability and service life of the frame assembly.

[0045] like Figure 1 and Figure 3 As shown, the support structure 10 also includes a bearing structure 13, which is disposed on at least one limiting structure 12. The bearing structure 13 has a insertion recess 131. There are multiple insertion recesses 131, spaced apart along a first preset direction. There are also multiple connecting structures 20, each corresponding to one of the insertion recesses 131. In this way, the bearing structure 13 can further increase the support area of ​​the support structure 10, providing more space for the insertion recesses 131 and ensuring the reliability of the connection after the pin structure 30 is inserted into the insertion recess 131. Simultaneously, the arrangement of multiple insertion recesses 131 and multiple insertion structures increases the number of connections between the wire harness and the insertion structures, ensuring the smoothness and reliability of the connection between the wire harness and the external structure.

[0046] In this example, such as Figure 1 As shown, the limiting structure 12 is plate-shaped, and the first preset direction is consistent with the width direction of the limiting structure 12.

[0047] In this embodiment, the area S1 of the receiving cross section of the connecting recess 21 for accommodating the pin structure 30 and the cross-sectional area S2 of the pin structure 30 satisfy the following condition: 0.72S2≤S1≤0.81S2. This arrangement ensures an interference fit between the connecting recess 21 and the pin structure 30, guaranteeing the firmness of the pin structure 30 after insertion into the connecting recess 21, enhancing the connection strength between the pin structure 30 and the connecting structure 20, and improving the structural stability of the pin structure 30.

[0048] Specifically, since the cross-section of the connecting structure 20 is square, the inner wall of the connecting recess 21 forms a square receiving cross-section, and the two squares have equal side lengths.

[0049] This application also provides an electric motor, which includes a frame assembly, the frame assembly being the aforementioned frame assembly.

[0050] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0051] The support structure of the skeleton assembly has a support portion and a recessed insertion portion. The support portion is used for winding the wire harness. A connecting structure extends into the recessed insertion portion and is interference-fitted with it. The connecting structure has a connecting recess for accommodating the pin structure and is interference-fitted with it. The outer peripheral surface of the connecting structure has a connecting protrusion. The material hardness of the connecting protrusion is greater than the material hardness of the portion of the support structure surrounding the recessed insertion portion. This allows the connecting protrusion to press against the inner wall of the recessed insertion portion as the connecting structure extends into it, causing the inner wall of the recessed insertion portion to deform into a pressing recess that matches the connecting protrusion. Thus, when the worker winds the copper wire onto the support portion, the interference fit between the pin structure and the connecting structure's connecting recess ensures a stable connection between the pin structure and the connecting structure. Meanwhile, during the process of the connecting structure, along with the pin structure, extending into the insertion recess and interfering with it, the connecting protrusion on the connecting structure can press against the inner wall of the insertion recess, forming a compression recess that accommodates the connecting protrusion. This allows the connecting protrusion to embed into the inner wall of the insertion recess, achieving an interference fit between the connecting structure and the insertion recess while also increasing the friction between them. This doubly strengthens the connection stability between the connecting structure and the insertion recess, thereby enhancing the connection stability between the pin structure and the support structure. It also prevents the copper wire from winding around the pin structure, causing the pin to become skewed, ensuring the structural stability of the pin structure, and thus solving the problem of poor structural stability of the pins in the motor stator in the prior art.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A skeleton component, characterized in that, include: The support structure (10) has a support portion (11) and a insertion recess (131), the support portion (11) being used for winding the wire harness; A connecting structure (20) extends into the insertion recess (131) and is press-fitted with the insertion recess (131). The connecting structure (20) has a connecting recess (21) for accommodating the pin structure (30) and is press-fitted with the pin structure (30). The outer peripheral surface of the connecting structure (20) has a connecting protrusion (22). The material hardness of the connecting protrusion (22) is greater than the material hardness of the portion of the support structure (10) that surrounds the insertion recess (131), so that during the process of the connecting structure (20) extending into the insertion recess (131), the connecting protrusion (22) squeezes the inner wall of the insertion recess (131), and the portion of the inner wall of the insertion recess (131) that contacts the connecting protrusion (22) is deformed into a squeezed recess that is adapted to the connecting protrusion (22).

2. The skeleton assembly according to claim 1, characterized in that, The connecting structure (20) is columnar, and there are multiple connecting protrusions (22), which are arranged sequentially around the central axis of the connecting structure (20).

3. The skeleton assembly according to claim 2, characterized in that, The orthographic projection of the connecting structure (20) onto the supporting structure (10) is a regular polygon. The outer surface of the connecting protrusion (22) and the outer surface of the connecting structure (20) have a maximum distance H. The maximum distance H and the side length L of the regular polygon satisfy the following condition: 0.1L≤H≤0.5L.

4. The skeleton assembly according to claim 2, characterized in that, The cross-section of the connecting protrusion (22) is one of a triangle, a semicircle, or a polygon.

5. The skeleton assembly according to claim 4, characterized in that, When the cross-section of the connecting protrusion (22) is triangular, the vertex angle A of the triangle away from the connecting structure (20) satisfies: 60°≤A≤90°.

6. The skeleton assembly according to claim 1, characterized in that, The support structure (10) includes: At least two limiting structures (12) are disposed at opposite ends of the support portion (11), and a receiving space is formed between the at least two limiting structures (12) and at least a portion of the outer surface of the support portion (11), the receiving space being used to receive the wire harness.

7. The skeleton assembly according to claim 6, characterized in that, The limiting structure (12) is arc-shaped, and the arc-shaped protrusion is directed toward the support part (11).

8. The skeleton assembly according to claim 7, characterized in that, The support structure (10) further includes a bearing structure (13), which is disposed on at least one of the limiting structures (12) and has the insertion recess (131). There are multiple insertion recesses (131), and the multiple insertion recesses (131) are spaced apart along a first preset direction; there are multiple connection structures, and the multiple connection structures are arranged one-to-one with the multiple insertion recesses.

9. The skeleton assembly according to claim 8, characterized in that, The area S1 of the connecting recess (21) for accommodating the receiving cross section of the pin structure (30) satisfies the following condition with respect to the cross section S2 of the pin structure (30): 0.72S2≤S1≤0.81S2.

10. An electric motor, characterized in that, The motor includes a frame assembly, which is the frame assembly according to any one of claims 1 to 9.

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