Box cover and half shaft integrated structure, machine core mechanism and hub motor

Abstract

The utility model discloses a box cover and half shaft integrated structure, a machine core mechanism and a hub motor, and relates to the field of hub motors. According to the technical scheme, the planetary gear box is characterized by comprising a box cover, a supporting plate, a positioning plate and a right half shaft which are sequentially and integrally formed in the axial direction, a planetary gear containing cavity is formed between the box cover and the positioning plate, and planetary shaft positioning holes are formed in the box cover and the positioning plate respectively. The box cover, the supporting plate, the positioning plate and the right half shaft are integrally formed, the assembly precision is improved, the number of parts and assembly procedures are reduced, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of in-wheel motors, and more specifically, to a box cover and half shaft integrated structure, a movement mechanism and an in-wheel motor. Background Technique

[0002] The motor shafts of in-wheel motors usually come in two forms, namely integral shafts and half shafts. For half shafts, they are usually fixed by screws.

[0003] For example, a Chinese patent with the authorized publication number CN221477426U discloses an in-wheel motor, which includes a central shaft. The central shaft includes a first central shaft and a second central shaft, and the first central shaft and the second central shaft are respectively arranged at both ends of the movement housing; an end plate is arranged at the inner end of the second central shaft, and the end plate is connected to the movement housing by screws.

[0004] However, in the above patent, the end plate is connected to the movement housing by screws, which results in more assembly processes, higher machining accuracy requirements, higher production costs, and the assembly accuracy also needs to be improved. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, one of the purposes of the present utility model is to provide a box cover and half shaft integrated structure, which integrally forms the box cover, the support plate, the positioning plate and the right half shaft, which is beneficial to improving the assembly accuracy, reducing the number of parts and assembly processes, and reducing the processing cost.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A box cover and half shaft integrated structure includes a box cover, a support plate, a positioning plate and a right half shaft that are integrally formed in sequence along the axial direction. A planetary gear accommodation cavity is formed between the box cover and the positioning plate, and planetary shaft positioning holes are respectively arranged on the box cover and the positioning plate.

[0008] Further, a plurality of support plates arranged circumferentially are provided between the box cover and the positioning plate.

[0009] Further, vent holes penetrating through to the inner end face of the box cover are provided on the outer side wall of the support plate.

[0010] Further, weight reduction holes are provided on the positioning plate.

[0011] Further, a plurality of support plates arranged circumferentially are provided between the box cover and the positioning plate, and a plurality of weight reduction holes respectively opposite to the support plates are provided on the positioning plate.

[0012] Further, a plurality of planetary gear relief grooves are provided on the outer side wall of the positioning plate.

[0013] Another object of the present utility model is to provide a movement mechanism, which includes the above-mentioned integrated structure of the case cover and half shaft.

[0014] Furthermore, the movement mechanism further includes a case shell connected to the case cover, and a movement accommodating cavity is formed between the case cover and the case shell; a stator and a rotor are respectively arranged in the movement accommodating cavity, and the drive shaft of the rotor extends into the planetary gear accommodating cavity; a plurality of planetary gears are arranged in the planetary gear accommodating cavity, and a sun gear cooperating with the planetary gears is arranged at the end of the drive shaft.

[0015] Furthermore, the movement mechanism further includes a left half shaft arranged on the outer end face of the case shell.

[0016] Another object of the present utility model is to provide a hub motor, which includes the above-mentioned movement mechanism.

[0017] In summary, the present utility model has the following beneficial effects:

[0018] 1. Integrally forming the case cover, support plate, positioning plate and right half shaft is beneficial to improving the assembly accuracy, reducing the number of parts and assembly processes, and reducing the processing cost.

[0019] 2. The three weight reduction holes are respectively opposite to the circumferential positions of the three support plates, so that while reducing the weight, the structural strength and stability are not affected.

[0020] 3. Arranging the ventilation holes on the support plate is beneficial to the ventilation and heat dissipation inside the case cover, and can avoid the planetary gear accommodating cavity without affecting the structural strength and stability. Description of the Drawings

[0021] Figure 1 Schematic diagram of the integrated structure of the case cover and half shaft in Embodiment 1 Figure 1 ;

[0022] Figure 2 Schematic diagram of the integrated structure of the case cover and half shaft in Embodiment 1 Figure 2 ;

[0023] Figure 3 Schematic diagram of the integrated structure of the case cover and half shaft in Embodiment 1 Figure 3 ;

[0024] Figure 4 Schematic diagram of the structure of the movement mechanism in Embodiment 2.

[0025] In the figure: 11, the box cover; 111, the first planetary shaft positioning hole; 12, the support plate; 121, the ventilation hole; 13, the positioning plate; 131, the second planetary shaft positioning hole; 132, the planetary gear relief groove; 133, the weight reduction hole; 14, the right half shaft; 2, the box shell; 3, the left half shaft; 41, the stator; 42, the rotor; 43, the drive shaft; 44, the planetary gear; 45, the planetary shaft. Detailed implementation mode

[0026] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications without creative contributions to this embodiment as needed after reading this specification, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law. Embodiment 1:

[0028] A box cover and half shaft integrated structure, referring to Figures 1 to 3 , the box cover 11, the support plate 12, the positioning plate 13 and the right half shaft 14 are integrally formed and arranged in sequence along the axial direction; wherein, the box cover 11 and the positioning plate 13 are connected by the support plate 12, and a planetary gear accommodating cavity is formed between the box cover 11 and the positioning plate 13. The first planetary shaft positioning hole 111 and the second planetary shaft positioning hole 131 are respectively arranged on the box cover 11 and the positioning plate 13; the planetary gear accommodating cavity includes a radial opening for installing the planetary gear; in this embodiment, the box cover 11, the support plate 12, the positioning plate 13 and the right half shaft 14 are integrally formed, which is beneficial to improving the assembly accuracy, reducing the number of parts and assembly processes, and reducing the processing cost.

[0029] Referring to Figures 1 to 3 , preferably, three support plates 12 are arranged circumferentially between the box cover 11 and the positioning plate 12, so as to improve the structural strength and stability; preferably, three weight reduction holes 133 are arranged on the positioning plate 13, so as to reduce the weight; preferably, in this embodiment, the three weight reduction holes 133 are respectively opposite to the circumferential positions of the three support plates 12, so that while reducing the weight, the structural strength and stability are not affected; preferably, the outer side wall of the support plate 12 is provided with a ventilation hole 121 penetrating to the inner end face of the box cover 11, which is beneficial to the ventilation and heat dissipation inside the box cover; moreover, setting the ventilation hole 121 on the support plate 12 can avoid the planetary gear accommodating cavity and does not affect the structural strength and stability; preferably, the outer side wall of the positioning plate 13 is provided with a plurality of planetary gear relief grooves 132; that is, the planetary gear accommodating cavity in this embodiment can accommodate a double planetary gear. Embodiment 2:

[0030] A movement mechanism, referring to Figures 1 to 4, which includes the integrated structure of the case cover and half shaft in Embodiment 1; the movement mechanism in this embodiment further includes a case shell 2 connected to the case cover 11, and a movement accommodation cavity is formed between the case cover 11 and the case shell 2; a stator 41 and a rotor 42 are respectively arranged in the movement accommodation cavity, and the drive shaft 43 of the rotor 42 extends into the planetary gear accommodation cavity; a plurality of planet gears 44 are arranged in the planetary gear accommodation cavity, and a sun gear cooperating with the planet gears 44 is arranged at the end of the drive shaft 43; a planet shaft 45 is inserted into the planet gear 44, and both ends of the planet shaft 45 are respectively embedded in the first planet shaft positioning hole 111 and the second planet shaft positioning hole 131; the movement mechanism further includes a left half shaft 3 arranged on the outer end face of the case shell 2, and in this embodiment, the left half shaft 3 is connected to the case shell 2 by screws. Embodiment 3:

[0031] A hub motor, referring to Figures 1 to 4 , which includes the movement mechanism in Embodiment 2.

Claims

1. A box cover and half shaft integrated structure, characterized in that: It includes a box cover, a support plate, a positioning plate and a right half shaft which are integrally formed in sequence along the axial direction. A planetary gear accommodation cavity is formed between the box cover and the positioning plate, and planetary shaft positioning holes are respectively arranged on the box cover and the positioning plate.

2. The integrated structure of the case cover and half shaft according to claim 1, characterized in that: A plurality of support plates arranged circumferentially are provided between the box cover and the positioning plate.

3. The integrated structure of the box cover and half shaft according to claim 1, characterized in that: Vent holes penetrating to the inner end face of the box cover are arranged on the outer side wall of the support plate.

4. The integrated structure of the case cover and half shaft according to claim 1, characterized in that: Weight reducing holes are arranged on the positioning plate.

5. The integrated structure of the box cover and half shaft according to claim 4, characterized in that: A plurality of support plates arranged circumferentially are provided between the box cover and the positioning plate, and a plurality of weight reducing holes respectively opposite to the support plates are arranged on the positioning plate.

6. The integrated structure of the case cover and half shaft according to claim 1, characterized in that: A plurality of planetary gear relief grooves are arranged on the outer side wall of the positioning plate.

7. A movement mechanism, characterized in that: It includes the box cover and half shaft integrated structure according to any one of claims 1-6.

8. The movement mechanism according to claim 7, characterized in that: The movement mechanism further includes a box housing connected to the box cover. A movement accommodation cavity is formed between the box cover and the box housing. A stator and a rotor are respectively arranged in the movement accommodation cavity. The drive shaft of the rotor extends into the planetary gear accommodation cavity. A plurality of planetary gears are arranged in the planetary gear accommodation cavity, and a sun gear matched with the planetary gears is arranged at the end of the drive shaft.

9. The movement mechanism according to claim 8, wherein: The movement mechanism further includes a left half shaft arranged on the outer end face of the box housing.

10. A hub motor, characterized in that: It includes the movement mechanism according to claim 7.

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