Flat wire hub motor

Abstract

The utility model discloses a flat wire hub motor which comprises a shell and a shaft body, the shaft body penetrates through the shell, the shaft body and the shell are coaxially arranged, the shaft body can rotate around the axis of the shaft body, a fixing disc is fixedly installed on the shaft body, the shaft body penetrates through the fixing disc, a second ring body is installed on the periphery of the fixing disc, the second ring body is provided with a plurality of first groove bodies, and the first groove bodies are evenly distributed in the circumferential direction of the second ring body. Protruding parts are formed between the adjacent first groove bodies, windings are wound on the protruding parts, winding shafts of the windings are in the radial direction of the second ring body, the windings are formed by winding copper wires, and the sections of the copper wires are flat. The utility model provides a flat wire hub motor, which effectively reduces the heating value of the motor and improves the efficiency of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of hub motors, and more specifically, to a flat wire hub motor. Background Art

[0002] The current hub motor includes a motor shaft, which is equipped with a slotted plate. A plurality of wound windings are installed on the outer periphery of the slotted plate. The wound windings are evenly distributed along the outer periphery of the slotted plate. The windings are wound by copper wire. Since the winding cross-section is circular, the contact area between the inner and outer circles of the winding copper wire is small, resulting in a narrower current flow cross-section, thereby increasing the motor resistance and the heat generated by the motor. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a flat wire hub motor that effectively reduces the heat generated by the motor and improves the efficiency of the motor.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a flat wire hub motor, including a shell and a shaft body, the shaft body passes through the shell, the shaft body and the shell are coaxially arranged, the shaft body can rotate around its own axis, the shaft body is fixedly installed with a fixed disk, the shaft body passes through the fixed disk, and a ring body 2 is installed on the outer periphery of the fixed disk. The ring body 2 is provided with a plurality of groove bodies 1, the groove bodies 1 are evenly distributed along the circumference of the ring body 2, and a protrusion is formed between adjacent groove bodies 1. The protrusion is wound with a winding, and the winding winding axis is along the radial direction of the ring body 2. The winding is wound by copper wire, and the cross-section of the copper wire is flat.

[0005] The utility model is further configured such that the cross section of the copper wire is a rectangle.

[0006] The present invention is further configured such that the width of the raised portion gradually increases in the outward direction along the two radial directions of the ring body.

[0007] The present invention is further configured such that the shell is provided with a cover body 1 and a cover body 2, and the shell, the cover body 1 and the cover body 2 wrap the fixed disk.

[0008] The utility model is further configured such that the first cover body is connected to the shaft body through a bearing, and the second cover body is connected to the shaft body through another bearing.

[0009] The utility model is further configured such that the shell includes a ring body 1, the ring body 1 is coaxial with the ring body 2, and a plurality of magnetic steels are installed on the inner peripheral wall of the ring body 1.

[0010] The utility model is further configured such that the ring body 2 is further provided with a groove body 2, the groove body 2 is communicated with the groove body 1, and the groove body 2 passes through the outer wall of the ring body 2.

[0011] The utility model is further configured such that oil seals are respectively installed between the cover body 1, the cover body 2 and the shaft body.

[0012] In summary, the present invention has the following beneficial effects:

[0013] 1. The rectangular, flat cross-section of the flat copper wires increases the contact area between the inner and outer rings, widening the current flow area. This reduces the motor's operating resistance, lowers heat generation, and improves motor efficiency. Furthermore, along the radial direction of the ring, the flat shape of the flat copper wires increases the contact area between them, thereby increasing the winding current flow area, reducing the motor's operating resistance and heat generation.

[0014] 2. As the width of the raised portion gradually increases along the radial direction of the ring body outward, the overall size of the raised portion increases, which reduces the magnetic circuit resistance in the raised portion, reduces the overall heat generation, and reduces the temperature rise during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of an embodiment;

[0016] Figure 2 is a cross-sectional view of an embodiment;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 is a three-dimensional diagram of a fixed disk in an embodiment;

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0020] Figure 6 A top view of the fixed disk in the embodiment;

[0021] Figure 7 Figure 6 Enlarged view of point C in the middle;

[0022] Figure 8 The cross section of the winding in the embodiment Figure 1 ;

[0023] Figure 9 Schematic diagram of the winding of the winding in the embodiment.

[0024] Figure numerals: housing 1, ring body 11, shaft body 2, bearing 21, oil seal 22, cover body 1 3, cover body 2 4, magnet 5, fixed plate 6, ring body 2 61, protrusion 611, groove body 1 612, groove body 2 613, winding 7. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1-Figure 2 As shown, this embodiment discloses a flat wire hub motor, comprising a housing 1 and a shaft 2. The shaft 2 passes through the housing 1 and is coaxially arranged with the housing 1. The shaft 2 can rotate around its own axis.

[0027] like Figure 2 、 Figure 3 As shown, the housing 1 includes a ring body 11, which is a circular ring structure. A plurality of magnets 5 are installed on the inner wall of the ring body 11, and the magnets 5 are evenly distributed along the inner circumferential wall of the ring body 11.

[0028] Figure 2 In the figure, the upper end cover of the shell 1 is installed with a cover body 3, the shaft body 2 passes through the cover body 3, the cover body 3 is connected to the shaft body 2 through a bearing 21, and an oil seal 22 is also installed between the cover body 3 and the shaft body 2.

[0029] The lower end cover of the housing 1 is provided with a second cover 4 , the shaft 2 passes through the second cover 4 , the second cover 4 is connected to the shaft 2 via another bearing 21 , and another oil seal 22 is provided between the second cover 4 and the shaft 2 .

[0030] like Figure 1 As shown, the shaft body 2 is fixedly mounted with a fixed disk 6, the shaft body 2 passes through the fixed disk 6, and the housing 1, the cover body 1 3, and the cover body 2 4 wrap the fixed disk 6. Figure 4-Figure 7 The outer periphery of the fixed disk 6 is installed with a ring body 2 61, and the ring body 2 61 is a circular ring structure. The ring body 11 is coaxial with the ring body 2 61, and the inner peripheral wall of the ring body 11 is installed with multiple magnetic steels 5 evenly distributed along the inner peripheral wall of the ring body 11.

[0031] Ring body 2 61 is provided with a plurality of groove bodies 1 612, which axially penetrate the ring body 2 61 and are evenly distributed along the circumference of the ring body 2 61. Ring body 2 61 is also provided with groove body 2 613, which radially penetrates the ring body 2 61. The groove bodies 2 613 correspond to the groove bodies 1 612 one by one and the two are connected to each other.

[0032] like Figure 4 As shown, a protrusion 611 is formed between adjacent slots 612, and a winding 7 is wound around the protrusion 611. Figure 4 Only one winding 7 is drawn in the figure, and the winding 7 is arranged in a one-to-one correspondence with the protrusion 611. Figure 8The winding 7 is made of a flat copper wire with a rectangular cross section, and the winding axis of the winding 7 is along the radial direction of the ring body 61.

[0033] like Figure 9 As shown, the winding 7 wound on the same protrusion 611 is wound into one or more layers of flat copper wire. Since the cross section of the flat copper wire is rectangular and flat, the contact area between the inner and outer coils of the multi-layered flat copper wire is increased, the current flow cross section becomes larger, the motor running resistance is reduced, the heat generation is reduced, and the motor efficiency is improved. Figure 7 As shown, along the radial direction of the ring body 2 61, the flat copper wires increase their contact area due to their flat characteristics, thereby increasing the current flow cross-section of the winding 7, reducing the motor's operating resistance, and lowering the heat generation.

[0034] like Figure 7 As shown, the width of the protrusion 611 gradually increases in the radial outward direction of the ring body 2 61, and the two side lines of the protrusion 611 form an angle a. Since the width of the protrusion 611 gradually increases in the radial outward direction of the ring body 2 61, the overall size of the protrusion 611 increases, so that the magnetic circuit resistance in the protrusion 611 is reduced, the overall heat generation is reduced, and the temperature rise during operation is reduced.

[0035] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A flat wire hub motor, characterized in that: The invention comprises a shell (1) and a shaft (2), wherein the shaft (2) passes through the shell (1), the shaft (2) and the shell (1) are coaxially arranged, the shaft (2) can rotate around its own axis, the shaft (2) is fixedly mounted with a fixed disk (6), the shaft (2) passes through the fixed disk (6), the outer periphery of the fixed disk (6) is mounted with a second ring body (61), the second ring body (61) is provided with a plurality of first groove bodies (612), the first groove bodies (612) are uniformly distributed along the circumference of the second ring body (61), and a protrusion (611) is formed between adjacent first groove bodies (612), a winding (7) is wound around the protrusion (611), the winding axis of the winding (7) is along the radial direction of the second ring body (61), the winding (7) is wound by copper wire, and the cross section of the copper wire is flat.

2. The flat wire hub motor according to claim 1, characterized in that: The cross section of the copper wire is rectangular.

3. The flat wire hub motor according to claim 1, characterized in that: The width of the protrusion (611) gradually increases in the radial outward direction of the second ring body (61).

4. The flat wire hub motor according to claim 1, characterized in that: The shell (1) is equipped with a cover body 1 (3) and a cover body 2 (4), and the shell (1), the cover body 1 (3) and the cover body 2 (4) wrap the fixed disk (6) therein.

5. The flat wire hub motor according to claim 4, characterized in that: The first cover body (3) is connected to the shaft body (2) via a bearing (21), and the second cover body (4) is connected to the shaft body (2) via another bearing (21).

6. The flat wire hub motor according to claim 1, characterized in that: The shell (1) includes a ring body (11), the ring body (11) is coaxial with the ring body (61), and a plurality of magnetic steels (5) are installed on the inner peripheral wall of the ring body (11).

7. The flat wire hub motor according to claim 1, characterized in that: The second ring body (61) is also provided with a second groove body (613), and the second groove body (613) is communicated with the first groove body (612), and the second groove body (613) passes through the outer wall of the second ring body (61).

8. The flat wire hub motor according to claim 4, characterized in that: Oil seals (22) are respectively installed between the cover body 1 (3), the cover body 2 (4) and the shaft body (2).

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