Magnetic steel pasting structure of hub motor

Abstract

The utility model relates to a magnetic steel pasting structure of a wheel hub motor, comprising a magnetic steel sheet and a magnetic steel fixing surface, the magnetic steel sheet is pasted on the magnetic steel fixing surface, the magnetic steel fixing surface is provided with a glue storage groove, and the glue storage groove is arranged on the side surface of the magnetic steel sheet; the magnetic steel fixing surface is axially and vertically placed, so that the glue storage groove is located above the magnetic steel sheet, the magnetic steel sheet is tightly attached to the magnetic steel fixing surface, glue is injected into the glue storage groove, and the glue in the glue storage groove flows downwards due to gravity and enters a gap between the magnetic steel sheet and the magnetic steel fixing surface, so that the gap between the magnetic steel sheet and the magnetic steel fixing surface is filled with the glue. Compared with the prior art, the glue in the glue storage tank automatically flows downwards to fill the gap between the magnetic steel sheet and the magnetic steel fixing surface due to gravity, so that the magnetic steel sheet can be effectively prevented from extruding the glue, the area of the magnetic steel sheet covered with the glue is larger, and the glue distribution is more uniform; meanwhile, more glue can be stored in the glue storage groove, sufficient glue is guaranteed, the pulling-out force of the magnetic steel sheets is increased, and the magnetic steel is pasted more firmly.

Description

Technical Field

[0001] The utility model relates to a magnetic steel pasting structure of a hub motor and belongs to the technical field of hub motors. Background Art

[0002] In the hub motor, the magnet needs to be pasted on the inner circumference of the rim or the inner circumference of the magnetic ring. The magnet contacts the inner circumference of the rim or the inner circumference of the magnetic ring. When pasting, the extruded glue will overflow along the periphery of the magnet. The amount of glue remaining between the magnet and the inner circumference of the rim or the inner circumference of the magnetic ring is small and uneven, making it difficult to fix the magnet. At this time, the magnet can only be pasted by the overflowing glue, which accumulates on the end faces around the magnet. That is, the thickness of the magnet determines the amount of glue. For products with thinner magnets, the amount of glue is seriously insufficient, causing the magnet to fall off. Utility Model Content

[0003] The utility model aims to provide a magnetic steel pasting structure of a hub motor which makes the magnetic steel pasting more firmly in view of the shortcomings of the prior art.

[0004] To achieve the purpose, the technical solution adopted by the utility model is:

[0005] A magnetic steel pasting structure of a hub motor comprises a magnetic steel sheet and a magnetic steel fixing surface, the magnetic steel sheet is pasted on the magnetic steel fixing surface, a glue storage groove is formed on the magnetic steel fixing surface, and the glue storage groove is located on the side of the magnetic steel sheet.

[0006] As a further optimization of the above technical solution: the glue storage tank is annular, the magnetic steel fixing surface is axially placed vertically so that the glue storage tank is located above the magnetic steel sheet, the magnetic steel sheet is close to the magnetic steel fixing surface, and glue is injected into the glue storage tank. The glue in the glue storage tank flows down due to gravity and enters the gap between the magnetic steel sheet and the magnetic steel fixing surface, thereby filling the space between the magnetic steel sheet and the magnetic steel fixing surface.

[0007] As a further optimization of the above technical solution: the two glue storage grooves are provided, and the two glue storage grooves are respectively located on both sides of the magnetic steel sheet. After the glue in one of the glue storage grooves flows down and solidifies, the magnetic steel fixing surface is inverted so that the other glue storage groove is located above the magnetic steel sheet, and glue is injected into the other glue storage groove, and the glue is waited for to flow down and solidify due to gravity to complete the pasting and fixation of the magnetic steel sheet.

[0008] As a further optimization of the above technical solution: it also includes a rim, the magnetic steel sheet is directly fixed on the inner circumference of the rim, that is, the magnetic steel fixing surface is the inner circumference of the rim, and the rubber storage groove is located on the inner circumference of the rim.

[0009] As a further optimization of the above technical solution: it also includes a rim, a magnetic ring is fixed on the inner circumference of the rim, the magnetic steel sheet is fixed on the inner circumference of the magnetic ring, that is, the magnetic steel fixing surface is the inner circumference of the magnetic ring, and the rubber storage groove is located on the inner circumference of the magnetic ring.

[0010] The magnetic steel sheet can be directly fixed on the inner circumference of the rim, or a magnetic ring is fixed on the inner circumference of the rim, and the magnetic steel sheet is fixed on the inner circumference of the magnetic ring, that is, the magnetic steel fixing surface is the inner circumference of the rim or the inner circumference of the magnetic ring, and the rubber storage groove is located on the inner circumference of the rim or the inner circumference of the magnetic ring.

[0011] As a further optimization of the above technical solution: the cross-section of the glue storage tank is square.

[0012] As a further optimization of the above technical solution: the side of the glue storage groove close to the magnetic steel sheet is inclined to form a guide surface.

[0013] As a further optimization of the above technical solution: the cross-section of the glue storage tank is semicircular.

[0014] As a further optimization of the above technical solution: the cross-section of the glue storage tank is square and is arranged as a double-rounded structure.

[0015] As a further optimization of the above technical solution: the cross-section of the glue storage tank is semi-elliptical.

[0016] As a further optimization of the above technical solution: the cross-section of the glue storage tank is an isosceles trapezoid.

[0017] Compared with the prior art, the glue in the glue storage tank of the utility model automatically flows downward due to gravity to fill the gap between the magnetic steel sheet and the magnetic steel fixing surface. Placing the magnetic steel sheet first and then filling the glue can effectively prevent the magnetic steel sheet from squeezing the glue, so that the area covered with glue on the magnetic steel sheet is larger and the glue distribution is more even. At the same time, the glue storage tank can also store more glue, ensuring sufficient glue, increasing the pull-off force of the magnetic steel sheet, and making the magnetic steel stick more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the first embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 3 It is a schematic cross-sectional structure diagram of the second embodiment of the present utility model.

[0021] Figure 4 yes Figure 1Schematic diagram of the enlarged structure at point B in the middle.

[0022] Figure 5 It is a schematic cross-sectional structure diagram of the third embodiment of the present utility model.

[0023] Figure 6 yes Figure 1 Schematic diagram of the enlarged structure at point C in the middle.

[0024] Figure 7 It is a schematic cross-sectional structure diagram of the fourth embodiment of the present utility model.

[0025] Figure 8 yes Figure 1 Schematic diagram of the enlarged structure at D in the middle.

[0026] Fig. 9 It is a schematic cross-sectional structure diagram of the fifth embodiment of the present invention.

[0027] Fig.10 yes Figure 1 Schematic diagram of the enlarged structure at E in the middle.

[0028] Fig.11 It is a schematic cross-sectional structure diagram of the sixth embodiment of the present utility model.

[0029] Fig.12 yes Figure 1 Schematic diagram of the enlarged structure at F in the middle. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. Figure 1-12 As shown, a magnetic steel pasting structure of a hub motor includes a magnetic steel sheet 1 and a magnetic steel fixing surface 2, and the magnetic steel sheet 1 is pasted on the magnetic steel fixing surface 2. Two annular glue storage grooves 3 are formed on the magnetic steel fixing surface 2, and the two glue storage grooves 3 are respectively located on both sides of the magnetic steel sheet 1.

[0031] When pasting the magnetic steel sheet 1, place the magnetic steel fixing surface 2 axially vertically, the magnetic steel sheet 1 is close to the magnetic steel fixing surface 2, and glue is injected into the glue storage groove 3 above the magnetic steel sheet 1. The glue in the glue storage groove 3 flows down due to gravity and enters the gap between the magnetic steel sheet 1 and the magnetic steel fixing surface 2, thereby filling the gap between the magnetic steel sheet 1 and the magnetic steel fixing surface 2. After the glue on this side solidifies, the magnetic steel fixing surface 2 is turned upside down so that the other glue storage groove 3 is located above the magnetic steel sheet 1, and glue is injected into the other glue storage groove 3, and the glue is waited for to flow down due to gravity and solidify, and the pasting and fixing of the magnetic steel sheet 1 is completed.

[0032] The glue in the glue storage tank 3 automatically flows down due to gravity to fill the gap between the magnetic steel sheet 1 and the magnetic steel fixing surface 2. Placing the magnetic steel sheet 1 first and then filling the glue can effectively prevent the magnetic steel sheet 1 from squeezing the glue, so that the area covered with glue on the magnetic steel sheet 1 is larger and the glue distribution is more even; at the same time, the glue storage tank can also store more glue, ensuring sufficient glue, increasing the pull-off force of the magnetic steel sheet 1, and making the magnetic steel more firmly adhered.

[0033] In the above technical solution: it also includes a rim 4, the magnetic steel sheet 1 can be directly fixed on the inner circumference of the rim 4, that is, the magnetic steel fixing surface 2 is the inner circumference of the rim 4, and the rubber storage groove 3 is located on the inner circumference of the rim 4; or, a magnetic ring 5 is fixed on the inner circumference of the rim 4, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5, that is, the magnetic steel fixing surface 2 is the inner circumference of the magnetic ring 5, and the rubber storage groove 3 is located on the inner circumference of the magnetic ring 5.

[0034] Embodiment 1: The cross section of the glue storage tank 3 is square, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5. Figure 1 , 2 shown.

[0035] Embodiment 2: The cross section of the glue storage tank 3 is semicircular, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5. Figure 3 , 4 shown.

[0036] Embodiment 3: The cross section of the glue storage tank 3 is square, and the side of the glue storage tank 3 close to the magnetic steel sheet is inclined to form a guide surface 31, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5, such as Figure 5 , 6 The guide surface 31 guides the glue in the glue storage tank 3 during its downward flow, thereby accelerating the downward flow speed of the glue in the glue storage tank 3 .

[0037] Embodiment 4: The cross section of the glue storage tank 3 is square and is set to a double rounded structure, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5, such as Figure 7 , 8 shown.

[0038] Embodiment 5: The cross section of the glue storage tank 3 is semi-elliptical, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5. Fig. 9 , 10 shown.

[0039] Embodiment 6: The cross section of the glue storage tank 3 is an isosceles trapezoid, and the magnetic steel sheet 1 is fixed on the inner circumference of the magnetic ring 5. Fig.11 , 12 shown.

[0040] In actual production, the glue storage tank 3 is not limited to the above form.

[0041] The preferred specific embodiments of the present utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should fall within the protection scope of the present utility model.

Claims

1. A magnetic steel pasting structure of a hub motor, comprising a magnetic steel sheet (1) and a magnetic steel fixing surface (2), wherein the magnetic steel sheet (1) is pasted on the magnetic steel fixing surface (2), characterized in that A glue storage groove (3) is formed on the magnetic steel fixing surface (2), and the glue storage groove (3) is located on the side of the magnetic steel sheet (1).

2. The magnetic steel pasting structure of the hub motor according to claim 1, characterized in that The glue storage groove (3) is annular in shape, and the magnetic steel fixing surface (2) is axially placed vertically so that the glue storage groove (3) is located above the magnetic steel sheet (1). The magnetic steel sheet (1) is tightly attached to the magnetic steel fixing surface (2). Glue is injected into the glue storage groove (3). The glue in the glue storage groove (3) flows downward due to gravity and enters the gap between the magnetic steel sheet (1) and the magnetic steel fixing surface (2), thereby filling the gap between the magnetic steel sheet (1) and the magnetic steel fixing surface (2).

3. The magnetic steel pasting structure of the hub motor according to claim 2 is characterized in that The glue storage grooves (3) are provided with two, and the two glue storage grooves (3) are respectively located on both sides of the magnetic steel sheet (1). After the glue in one of the glue storage grooves (3) flows down and solidifies, the magnetic steel fixing surface (2) is turned upside down so that the other glue storage groove (3) is located above the magnetic steel sheet (1), and glue is injected into the other glue storage groove (3). Wait for the glue to flow down due to gravity and solidify, and the bonding and fixing of the magnetic steel sheet (1) is completed.

4. The magnetic steel pasting structure of a hub motor according to any one of claims 1 to 3, characterized in that It also includes a rim (4), the magnetic steel sheet (1) is directly fixed on the inner circumference of the rim (4), that is, the magnetic steel fixing surface (2) is the inner circumference of the rim (4), and the rubber storage groove (3) is located on the inner circumference of the rim (4).

5. The magnetic steel pasting structure of a hub motor according to any one of claims 1 to 3, characterized in that It also comprises a wheel rim (4), a magnetic conductive ring (5) being fixed on the inner circumference of the wheel rim (4), the magnetic steel sheet (1) being fixed on the inner circumference of the magnetic conductive ring (5), that is, the magnetic steel fixing surface (2) is the inner circumference of the magnetic conductive ring (5), and the rubber storage groove (3) is located on the inner circumference of the magnetic conductive ring (5).

6. The magnetic steel pasting structure of the hub motor according to claim 1, characterized in that The cross section of the glue storage tank (3) is square.

7. The magnetic steel pasting structure of the hub motor according to claim 5, characterized in that The side surface of the glue storage groove (3) close to the magnetic steel sheet (1) is inclined to form a guide surface (31).

8. The magnetic steel pasting structure of the hub motor according to claim 1, characterized in that The cross section of the glue storage tank (3) is semicircular.

9. The magnetic steel pasting structure of the hub motor according to claim 1, characterized in that The cross section of the glue storage tank (3) is square and is arranged as a double rounded corner structure.

10. The magnetic steel pasting structure of the hub motor according to claim 1, characterized in that The cross section of the glue storage tank (3) is semi-elliptical.

11. The magnetic steel pasting structure of the hub motor according to claim 1, characterized in that The cross section of the glue storage tank (3) is an isosceles trapezoid.

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