Winding frame and winding device

Abstract

The utility model provides a winding frame and a winding device, and relates to the technical field of iron core winding. The winding frame comprises a frame body, the frame body is provided with a wire slot and an accommodating hole, the accommodating hole is used for wrapping a coil mounting part of the stator core, the accommodating hole comprises a main hole and an avoiding hole which is located in the circumferential edge of the main hole and communicated with the main hole, and the circumferential inner wall surface of the main hole is used for being attached to the coil mounting part. The circumferential inner wall face of the main hole comprises at least one set of adjacent inner wall faces arranged at an included angle, and a receding hole is formed in the joint of each set of adjacent inner wall faces arranged at the included angle. After the winding of the coil on the wire slot is completed, the winding frame is sleeved on the coil installation part of the stator iron core, so that the winding of the coil in a relatively narrow space on the stator iron core is not needed, and the winding efficiency of the coil is improved; due to the arrangement of the receding hole, the coil installation part can be smoothly inserted into the main hole of the containing hole, the requirement for the machining precision of the edge of the contact face of the coil installation part and the containing hole can be lowered, and the applicability of the winding frame is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of iron core winding, in particular to a winding frame and a winding device. Background Art

[0002] In the technical field of sensors, a stator core is required and windings need to be arranged on the stator core. The space for arranging the coil windings on the core is relatively narrow. The commonly used method is to directly wind the copper wire on the sensor stator core. For example, the stator structure disclosed in the Chinese patent application with application number 201310079992.7 has a stator core with a cylindrical outer ring portion and a plurality of teeth protruding from the inner circumference of the outer ring portion to the rotor, and an excitation winding and a detection winding are wound on each tooth. In this case, the winding of the coil on the stator core is relatively inconvenient, and the winding is usually done manually, and the winding efficiency is low. Utility Model Content

[0003] The utility model aims to solve the problem of how to facilitate winding of the stator core in the related art to a certain extent.

[0004] In order to solve at least one aspect of the above-mentioned problems to at least a certain extent, in a first aspect, the utility model provides a winding frame, including a frame body, on which a wire groove and a receiving hole are arranged, the receiving hole is used to wrap the coil mounting part of the stator core, the receiving hole includes a main hole and a avoidance hole located at the circumferential edge of the main hole and connected to the main hole, the circumferential inner wall surface of the main hole is used to fit with the coil mounting part, the circumferential inner wall surface of the main hole includes at least one group of adjacent inner wall surfaces set at an angle, and the avoidance hole is arranged at the connection of each group of adjacent inner wall surfaces set at an angle.

[0005] Optionally, the cross-section of the main hole is rectangular, and the avoidance holes are arranged at four vertices of the rectangle.

[0006] Optionally, the width of the rectangle is greater than or equal to 2 mm, and the width of the rectangle is less than or equal to 6 mm.

[0007] Optionally, the wire groove is a groove arranged on the circumferential outer surface of the frame, and the cross-section of the frame is rectangular.

[0008] Optionally, the inner wall surface of the avoidance hole is located on a cylindrical surface.

[0009] Optionally, the inner wall surface of the avoidance hole is smoothly connected to the inner wall surface of the main hole.

[0010] Optionally, the accommodating hole is provided with guide surface structures at least at two ends of the main hole.

[0011] In a second aspect, the utility model provides a winding device, comprising:

[0012] A rotating mechanism, wherein a columnar portion is provided on the rotating mechanism, the cross-sectional shape of the columnar portion is consistent with the cross-sectional shape of the coil mounting portion of the stator core, the columnar portion is inserted into the receiving hole of the winding frame as described in the first aspect above, and the circumferential inner wall surface of the main hole of the receiving hole is in contact with the circumferential outer surface of the columnar portion;

[0013] A driving mechanism is drivingly connected to the rotating mechanism.

[0014] Optionally, the rotating mechanism comprises a rotating shaft and a mounting frame, the rotating shaft is detachably connected to the mounting frame, the columnar portion is provided on one end of the mounting frame away from the rotating shaft, and the driving mechanism is drivingly connected to the rotating shaft.

[0015] Optionally, the winding device further comprises a counter, and the counter is used to count the number of rotations of the rotating mechanism;

[0016] And / or, the driving mechanism includes at least one of a manual driving member and an electric driving member.

[0017] Compared with the relevant prior art, in the winding frame and winding device of the utility model, the frame body of the winding frame is sleeved on the coil mounting part of the stator core through the accommodating hole, and the circumferential inner wall surface of the main hole of the accommodating hole is used to fit with the coil mounting part. Specifically, two adjacent inner wall surfaces set at an angle among the circumferential inner wall surfaces of the main hole correspond to the two adjacent outer surfaces of the coil mounting part set at an angle. For example, the cross-sectional shape of the coil mounting part is rectangular, and the cross-sectional shape of the main hole is also correspondingly rectangular. Therefore, after the frame body completes the winding of the coil in its wire slot, the winding frame is sleeved on the coil mounting part of the stator core, thereby avoiding the winding of the coil directly in the relatively narrow space on the stator core, which is beneficial to improving the winding efficiency of the coil. At the same time, the accommodating hole also includes a avoidance hole connected to the main hole, and each group of adjacent inner wall surfaces arranged at an angle are provided with a avoidance hole at the connection point, that is, the avoidance hole is provided at the vertex of the rectangle corresponding to the main hole, and the vertex part of the rectangle corresponding to the coil mounting part is accommodated or avoided through the avoidance hole, thereby ensuring that when the winding frame is placed on the coil mounting part, the coil mounting part can be smoothly inserted into the main hole of the accommodating hole. On this basis, the processing accuracy requirements for the coil mounting part and the accommodating hole at the vertex of the rectangle corresponding to the coil mounting part can be reduced, thereby ensuring the applicability of the winding frame. For example, the winding frame can be applied to a coil mounting part with a smaller cross-sectional size. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a winding frame in an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of guide surface structures provided at both ends of the main hole of the winding frame in the implementation of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the winding device of the utility model.

[0021] Description of reference numerals:

[0022] 100-frame; 110-wire slot; 120-accommodating hole; 121-main hole; 1211-upper inner wall surface; 1212-lower inner wall surface; 1213-left inner wall surface; 1214-right inner wall surface; 122-avoidance hole; 123-guide surface structure; 200-mounting frame; 210-columnar part; 300-rotating shaft; 400-manual drive member; 500-counter; 600-frame; 700-nut member. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0026] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0027] In the accompanying drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the up, and the negative direction of the Z axis represents the down; the X axis in the accompanying drawings represents the front and back position, and the positive direction of the X axis (that is, the direction of the arrow of the X axis) represents the front side, and the negative direction of the X axis represents the back side; the Y axis in the accompanying drawings represents the horizontal direction and is designated as the left and right position, and the positive direction of the Y axis (that is, the direction of the arrow of the Y axis) represents the right side, and the negative direction of the Y axis represents the left side; it should be noted that the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] like Figure 1 As shown, an embodiment of the utility model provides a winding frame, including a frame 100, on which a wire groove 110 and a receiving hole 120 are arranged, and the receiving hole 120 is used to wrap the coil mounting portion of the stator core, and the receiving hole 120 includes a main hole 121 and a avoidance hole 122 located at the circumferential edge of the main hole 121 and connected to the main hole 121, and the circumferential inner wall surface of the main hole 121 is used to fit with the coil mounting portion, and the circumferential inner wall surface of the main hole 121 includes at least one group of adjacent inner wall surfaces set at an angle, and the avoidance hole 122 is arranged at the connection of each group of adjacent inner wall surfaces set at an angle.

[0029] In this specification, the stator core includes a cylindrical outer ring portion and a plurality of teeth protruding from the inner circumference of the outer ring portion toward the rotor, the cross-sectional shape of the teeth is rectangular, and the teeth form the coil mounting portion of the stator core as an example to illustrate the content of the utility model, but it should be understood that the structural form of the coil mounting portion is not limited to this without violating the design concept of the utility model. The circumferential outer surface of the coil mounting portion is usually provided with at least one set of adjacent outer surfaces arranged at an angle, and the adjacent outer surfaces arranged at an angle can limit the rotation of the components installed on the coil mounting portion.

[0030] It should be understood that the frame 100 of the winding frame is used to be mounted on the coil mounting part of the stator core through the accommodating hole 120, and the avoidance hole 122 mainly plays a avoidance role. Specifically, it is mainly used to avoid the connection between adjacent outer surfaces of the coil mounting part that are set at an angle, such as avoiding the sharp corner part of the connection, which can reduce the overall processing accuracy requirements for the accommodating hole 120.

[0031] Assuming that the cross-sectional shape of the coil mounting portion is a first rectangle, and the length of the first rectangle is 8 mm and the width is 3 mm, then if the accommodating hole 120 only includes the main hole 121 but does not include the avoidance hole 122, the cross-sectional shape of the main hole 121 is usually a second rectangle that matches the first rectangle, that is, the length of the second rectangle is 8 mm and the width is 3 mm. However, in the process of manufacturing the winding frame, the winding frame is usually formed by injection molding or machining, and the vertices of the rectangular holes are difficult to be formed into right angles. For example, during machining, the vertices of the rectangular holes are usually arc corners, and the arc radius of the arc corners is the radius of the tool. During injection molding, due to process requirements, chamfers are usually set on the mold core corresponding to the rectangular holes. Therefore, the rectangular holes formed usually have arc corners or chamfers at the vertices, and the arc corners or chamfers will affect the smooth insertion of the coil mounting portion of the stator core. In this case, it is necessary to refine the cross-sectional shape of the coil mounting portion of the stator core, especially refine (i.e., fine machining) the vertices of the first rectangle. On the one hand, it is difficult to perform the refinement, and on the other hand, the machining cost is high, especially when the cross-sectional size of the coil mounting portion is small. Therefore, when the cross-sectional size of the coil mounting portion is small, the coil is often wound directly on the stator.

[0032] In this embodiment, the frame body 100 of the winding frame is sleeved on the coil mounting part of the stator core through the accommodating hole 120, and the circumferential inner wall surface of the main hole 121 of the accommodating hole 120 is used to fit with the coil mounting part. Specifically, two adjacent inner wall surfaces set at an angle in the circumferential inner wall surface of the main hole 121 correspond to the two adjacent outer surfaces of the coil mounting part set at an angle. For example, the cross-sectional shape of the coil mounting part is rectangular, and the cross-sectional shape of the main hole 121 is also correspondingly rectangular. Therefore, after the frame body 100 completes the winding of the coil in its wire slot 110, the winding frame is sleeved on the coil mounting part of the stator core, thereby avoiding the winding of the coil directly in the relatively narrow space on the stator core, which is beneficial to improving the winding efficiency of the coil. At the same time, the accommodating hole 120 also includes a avoidance hole 122 connected to the main hole 121. The avoidance hole 122 is provided at the connection between each group of adjacent inner wall surfaces arranged at an angle, that is, the avoidance hole 122 is provided at the vertex of the rectangle corresponding to the main hole 121, and the vertex part of the rectangle corresponding to the coil mounting part is accommodated or avoided through the avoidance hole 122, thereby ensuring that when the winding frame is placed on the coil mounting part, the coil mounting part can be smoothly inserted into the main hole 121 of the accommodating hole 120. On this basis, the processing accuracy requirements for the coil mounting part and the accommodating hole 120 at the corresponding rectangular vertex can be reduced, thereby ensuring the applicability of the winding frame. For example, the winding frame can be applied to a coil mounting part with a smaller cross-sectional size.

[0033] like Figure 1As shown, optionally, the cross-sectional shape of the main hole 121 is rectangular, and the avoidance holes 122 are arranged at the four vertices of the rectangle.

[0034] Specifically, the circumferential inner wall surface of the main hole 121 includes an upper inner wall surface 1211, a lower inner wall surface 1212, a left inner wall surface 1213 and a right inner wall surface 1214. The connection between the upper inner wall surface 1211 and the left inner wall surface 1213, the connection between the upper inner wall surface 1211 and the right inner wall surface 1214, the connection between the lower inner wall surface 1212 and the left inner wall surface 1213, and the connection between the lower inner wall surface 1212 and the right inner wall surface 1214 are all provided with avoidance holes 122. This arrangement facilitates the structural design of the coil mounting portion of the corresponding stator core.

[0035] Optionally, the width of the rectangle is greater than or equal to 2 mm, and the width of the rectangle is less than or equal to 6 mm.

[0036] It should be understood that the width direction of the rectangle refers to the direction in which its size is smaller, that is, the Y-axis direction in the figure. For example, the width of the rectangle is less than or equal to 3 mm and greater than or equal to 2 mm.

[0037] When the size of the rectangle, especially the size in the width direction, is small, it is difficult to grind or finish the vertices of the rectangle to meet the use requirements. In this case, the winding frame of the utility model can be applied to the coil mounting part with a smaller cross-sectional size. When the size of the rectangle is large, this solution can also be used, but finishing can be used to meet the use requirements.

[0038] Optionally, the wire slot 110 is a groove disposed on the circumferential outer surface of the frame body 100 , and the cross-section of the frame body 100 is rectangular.

[0039] Thus, the coil is easy to wind, the structure is simple and the practicability is strong.

[0040] Optionally, the inner wall surface of the avoidance hole 122 is located on a cylindrical surface.

[0041] The avoidance hole 122 may be subsequently formed by drilling, or may be formed by corresponding cylindrical ribs during injection molding, which facilitates the molding of the avoidance hole 122 and will not be described in detail here.

[0042] The inner wall surface of the avoidance hole 122 is smoothly connected to the inner wall surface of the main hole 121 .

[0043] For example, the inner wall surface of the avoidance hole 122 is connected to the inner wall surface of the main hole 121 through an arc surface transition, thereby avoiding stress concentration at the boundary between the two.

[0044] like Figure 2 As shown, optionally, the receiving hole 120 is provided with guide surface structures 123 at least at two ends of the main hole 121 .

[0045] The guide surface structure 123 can be an inclined surface or an arc surface, so as to guide the relative position between the main hole 121 and the coil mounting part of the stator core when assembling the two, or to guide the relative position between the main hole 121 and, for example, the mounting frame 200 described later when assembling the two.

[0046] like Figure 3 As shown, another embodiment of the utility model provides a winding device, which includes:

[0047] The rotating mechanism is provided with a columnar portion 210, the cross-sectional shape of the columnar portion 210 is consistent with the cross-sectional shape of the coil mounting portion of the stator core, the columnar portion 210 is inserted into the receiving hole 120 of the winding frame in the above embodiment, and the circumferential inner wall surface of the main hole 121 of the receiving hole 120 is in contact with the circumferential outer surface of the columnar portion 210;

[0048] The driving mechanism is drivingly connected to the rotating mechanism.

[0049] Specifically, the columnar portion 210 can simulate the coil mounting portion to a certain extent, ensuring that the winding frame can be used to connect with the coil mounting portion.

[0050] The driving mechanism may include at least one of a manual driving member 400 and an electric driving member. For example, the figure shows a situation where the manual driving member 400 includes a crank, and by turning the crank, the rotating mechanism can drive the winding frame to rotate, thereby achieving winding.

[0051] A winding device is usually equipped with a plurality of winding frames, and the winding frames can be sleeved on the columnar part 210.

[0052] In this way, the coil on the winding frame can be wound by the winding device, and the structure is simple. In addition, the arrangement of the avoidance hole 122 on the winding frame enables the winding frame to be smoothly mounted on the columnar part 210 of the rotating mechanism, and the structure is simple and practical.

[0053] Optionally, the rotating mechanism includes a rotating shaft 300 and a mounting frame 200, the rotating shaft 300 is installed on the frame 600, the rotating shaft 300 and the mounting frame 200 are detachably connected, a columnar part 210 is provided on one end of the mounting frame 200 away from the rotating shaft 300, and the driving mechanism is drivingly connected to the rotating shaft 300.

[0054] At this time, the mounting frame 200 can be set in a variety of ways as needed to meet the installation requirements of winding frames of different specifications. The connection method between the mounting frame 200 and the rotating shaft 300 is not limited. For example, a nut structure can be set on the mounting frame 200, such as a nut member 700 welded thereon, and the rotating member is threadedly connected to the nut structure, so as to achieve relative position locking between the two.

[0055] The specific structure of the mounting frame 200 is not limited. The axis of the rotating shaft 300 preferably passes through the center of the main hole 121. For example, the mounting frame 200 can be set as an L-shaped frame, one part of which forms the columnar portion 210, and the other part is connected to the rotating shaft 300 at a position spaced from the columnar portion 210. Of course, the axis of the rotating shaft 300 can be offset to one side of the center of the main hole 121. For example, the mounting frame 200 only includes the columnar portion 210, and the nut member 700 is welded to the side of one end of the columnar portion 210, and is connected to the rotating shaft 300 through the nut member 700.

[0056] Optionally, the winding device further comprises a counter 500, and the counter 500 is used to count the number of rotations of the rotating mechanism.

[0057] The counter 500 can count the number of rotations of the rotating shaft 300. It can count mechanically or electronically. Its setting method can adopt relevant technologies and will not be described in detail here.

[0058] Of course, in the above embodiment, a structure for locking the winding frame may be selectively provided on the columnar portion 210, which will not be described in detail here.

[0059] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A winding frame, characterized in that: The invention comprises a frame (100), wherein the frame (100) is provided with a wire slot (110) and a receiving hole (120), wherein the receiving hole (120) is used to wrap a coil mounting portion of a stator core, wherein the receiving hole (120) comprises a main hole (121) and a avoidance hole (122) located at a circumferential edge of the main hole (121) and connected to the main hole (121), wherein the circumferential inner wall surface of the main hole (121) is used to fit with the coil mounting portion, wherein the circumferential inner wall surface of the main hole (121) comprises at least one group of adjacent inner wall surfaces arranged at an angle, wherein the avoidance hole (122) is arranged at the connection of each group of adjacent inner wall surfaces arranged at an angle.

2. The winding frame according to claim 1, characterized in that The cross-sectional shape of the main hole (121) is rectangular, and the avoidance holes (122) are arranged at the four vertices of the rectangle.

3. The winding frame according to claim 2, characterized in that: The width of the rectangle is greater than or equal to 2 mm, and the width of the rectangle is less than or equal to 6 mm.

4. The winding frame according to any one of claims 1 to 3, characterized in that: The wire groove (110) is a groove arranged on the circumferential outer surface of the frame body (100), and the cross-section of the frame body (100) is rectangular.

5. The winding frame according to any one of claims 1 to 3, characterized in that: The inner wall surface of the avoidance hole (122) is located on a cylindrical surface.

6. The winding frame according to any one of claims 1 to 3, characterized in that: The inner wall surface of the avoidance hole (122) is smoothly transitionally connected to the inner wall surface of the main hole (121).

7. The winding frame according to any one of claims 1 to 3, characterized in that: The accommodating hole (120) is provided with guide surface structures (123) at least at two ends of the main hole (121).

8. A winding device, characterized in that: include: A rotating mechanism, wherein a columnar portion (210) is provided on the rotating mechanism, the cross-sectional shape of the columnar portion (210) is consistent with the cross-sectional shape of the coil mounting portion of the stator core, the columnar portion (210) is inserted into the receiving hole (120) of the winding frame according to any one of claims 1 to 7, and the circumferential inner wall surface of the main hole (121) of the receiving hole (120) is in contact with the circumferential outer surface of the columnar portion (210); A driving mechanism is drivingly connected to the rotating mechanism.

9. The winding device according to claim 8, characterized in that The rotating mechanism comprises a rotating shaft (300) and a mounting frame (200), the rotating shaft (300) being detachably connected to the mounting frame (200), the columnar portion (210) being provided at one end of the mounting frame (200) away from the rotating shaft (300), and the driving mechanism being drivingly connected to the rotating shaft (300).

10. The winding device according to claim 8, characterized in that It also includes a counter (500), wherein the counter (500) is used to count the number of rotations of the rotating mechanism; And / or, the driving mechanism includes at least one of a manual driving member (400) and an electric driving member.

Images