Motor casing and motor assembly

Abstract

The embodiment of the utility model discloses a motor casing and a motor assembly. The motor casing comprises a casing body, a first reinforcing rib, a second reinforcing rib and a third reinforcing rib. According to the embodiment of the utility model, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib which are inclined at a certain angle are arranged in the axial direction of the shell, so that the structural strength and rigidity of the shell in multiple directions are enhanced; meanwhile, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are distributed at intervals according to a first preset distance, a second preset distance and a third preset distance, so that the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are distributed according to a certain rule, and the structural strength and rigidity of the corresponding area of the shell are uniformly improved; therefore, the overall strength and rigidity of the shell are effectively improved, the sweep frequency characteristic of the shell is improved, the vibration resistance of the shell is improved, and the NVH performance of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a motor casing and a motor assembly. Background Art

[0002] As new energy vehicle drive motors continue to develop towards high speed, high torque and high power, higher requirements are placed on the housing strength, vibration characteristics and NVH (Noise, Vibration, Harshness) of the drive motors.

[0003] Currently, the stator and the housing mostly use an interference fit to transmit torque. Due to the large difference in thermal expansion coefficients between the silicon steel sheets supporting the stator and the aluminum alloy used to make the housing, the housing shrinks much more than the stator in low-temperature environments. The interference fit method causes the housing to bear more stress. Therefore, the industry usually installs reinforcing ribs on the outside of the housing to increase the strength and rigidity of the housing, thereby improving the vibration resistance and NVH of the motor. However, some manufacturers will install unidirectional and overly dense reinforcing ribs on the housing to increase the strength of the housing. This will cause the weight of the housing to increase significantly, making it impossible for the motor to achieve a lightweight design. At the same time, the overly dense reinforcing ribs on the housing will also affect the setting of features such as the oil inlet and outlet holes and the water inlet and outlet holes on the housing. Since these features are difficult to avoid the dense reinforcing ribs, the overall radial size of the motor will increase to accommodate these features, making it impossible for the motor to achieve a compact design. In addition, some manufacturers have installed circumferential and axial reinforcement ribs on the casing. Although this improves the strength of the casing, the distribution of these reinforcement ribs and the distribution of the connection points between them are too sparse and irregular, and cannot evenly and effectively improve the overall strength and rigidity of the casing.

[0004] Therefore, a new technical solution is urgently needed to solve one or more of the above-mentioned technical problems. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a motor housing and a motor assembly to solve the problem in the prior art that the overall strength and rigidity of the housing cannot be uniformly and effectively improved.

[0006] In a first aspect, the utility model provides a motor housing, comprising a housing and first, second and third reinforcing ribs arranged on an outer circumferential surface of the housing and interlaced with each other;

[0007] The first reinforcing ribs extend along a first direction to surround the shell, and there are at least two first reinforcing ribs distributed along the axial direction of the shell at a first preset distance;

[0008] The second reinforcing ribs and the third reinforcing ribs extend along the second direction and the third direction respectively, there are at least two second reinforcing ribs and they are distributed along the outer circumference of the shell at a second preset distance, and there are at least two third reinforcing ribs and they are distributed along the outer circumference of the shell at a third preset distance;

[0009] A first preset angle A is formed between the first direction and the axial direction of the shell, a second preset angle B is formed between the second direction and the axial direction of the shell, and a third preset angle C is formed between the third direction and the axial direction of the shell, so that both the second reinforcing rib and the third reinforcing rib are staggered with the first reinforcing rib;

[0010] Among them, 0°<A≤90°, 0°<B<90°, 0°<C<90°.

[0011] Based on the above-mentioned embodiment of the motor casing, the structural strength and rigidity of the casing in multiple directions are enhanced by arranging the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs inclined at a certain angle in the axial direction of the casing; at the same time, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are spaced apart at the first preset distance, the second preset distance and the third preset distance respectively, so that the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are distributed according to a certain rule, thereby uniformly improving the structural strength and rigidity of the corresponding area of the casing, thereby effectively improving the overall strength and rigidity of the casing, improving the frequency sweeping characteristics of the casing and improving the vibration resistance of the casing, thereby improving the NVH performance of the motor.

[0012] In one embodiment of the motor housing, a first angle and a second angle exist between any one of the first reinforcing ribs and the second reinforcing ribs and the third reinforcing ribs intersecting therewith, respectively; and a third angle exists between any one of the second reinforcing ribs and the third reinforcing ribs intersecting therewith.

[0013] At least two of the first angle, the second angle, and the third angle have equal angle values.

[0014] In one embodiment of the motor housing, the first angle, the second angle, and the third angle are all equal.

[0015] Furthermore, based on an embodiment of the above-mentioned motor housing, a plurality of equilateral triangular reinforcing rib structures are formed on the housing in the first direction, thereby more evenly improving the structural strength and rigidity of the housing.

[0016] In one embodiment of the motor housing, any one of the second reinforcing ribs is staggered with at least two of the first reinforcing ribs and at least one of the third reinforcing ribs in an "X" shape.

[0017] In one embodiment of the above-mentioned motor housing, any one of the second reinforcing ribs and at least one of the third reinforcing ribs are staggered in an "X" shape to form an intersection point, and at least one of the first reinforcing ribs is staggered with the second reinforcing rib through the intersection point.

[0018] Furthermore, based on an embodiment of the above-mentioned motor housing, a plurality of equilateral triangle reinforcing rib structures are evenly distributed on the housing, thereby further evenly improving the structural strength and rigidity of the housing.

[0019] In one embodiment of the above motor housing, the first preset angle A is 90°.

[0020] In one embodiment of the above-mentioned motor housing, the second preset angle B and the third preset angle C are equal in value.

[0021] In one embodiment of the above-mentioned motor housing, the head ends of all the second reinforcing ribs and the third reinforcing ribs are connected to one of the first reinforcing ribs, and the tail ends thereof are connected to another of the first reinforcing ribs.

[0022] In one embodiment of the above-mentioned motor casing, the motor casing includes a mounting structure arranged on the outer peripheral surface of the casing, and the mounting structure includes a mounting boss group respectively arranged at the axial ends of the casing, and the head end and the tail end of all the second reinforcing ribs and the third reinforcing ribs are respectively connected to the adjacent mounting boss groups.

[0023] In one embodiment of the above motor housing, edges of the first reinforcing rib and / or the second reinforcing rib and / or the third reinforcing rib are provided with rounded corners.

[0024] In one embodiment of the above-mentioned motor housing, the first preset distance, the second preset distance, and the third preset distance are all constants.

[0025] In one embodiment of the motor housing described above, the head end of any one of the second reinforcing ribs is connected to the head end of an adjacent third reinforcing rib, and the tail end thereof is connected to the tail end of another adjacent third reinforcing rib.

[0026] In a second aspect, the present invention provides a motor assembly, comprising the motor housing as described above and a stator and rotor assembly disposed in the motor housing.

[0027] One or more of the above embodiments of the present invention have at least one or more of the following beneficial effects:

[0028] By arranging a first reinforcing rib inclined at a certain angle in the axial direction of the shell, and arranging a second reinforcing rib and a third reinforcing rib inclined at a certain angle in the circumferential direction of the shell, the structural strength and rigidity of the shell in the axial and circumferential directions are strengthened; at the same time, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are spaced apart at a first preset distance, a second preset distance and a third preset distance respectively, so that the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are distributed according to a certain rule, thereby uniformly improving the structural strength and rigidity of the corresponding area of the shell, thereby effectively improving the overall strength and rigidity of the shell, improving the frequency sweeping characteristics of the casing and improving the vibration resistance of the casing, thereby improving the NVH performance of the motor.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Furthermore, similar numbers in the figures represent similar components, where:

[0031] Figure 1 This is a schematic diagram of the structure of a motor housing provided by an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram provided by an embodiment of the present utility model for illustrating the extension directions of the first reinforcing rib, the second reinforcing rib, and the third reinforcing rib;

[0033] Figure 3 This is a structural diagram for showing the end of a motor casing provided by an embodiment of the present utility model;

[0034] Figure 4 This is a schematic diagram of a structure provided by an embodiment of the present invention for showing the staggered first reinforcing ribs, second reinforcing ribs and third reinforcing ribs;

[0035] Figure 5 This is another structural schematic diagram provided by an embodiment of the present invention for showing the staggered first reinforcing ribs, second reinforcing ribs and third reinforcing ribs.

[0036] Description of Reference Numerals

[0037] 1. Shell; 2. First reinforcing rib; 3. Second reinforcing rib; 4. Third reinforcing rib; 5. Mounting boss assembly. DETAILED DESCRIPTION

[0038] Some embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0039] As described in the background art, some manufacturers will install unidirectional and overly dense reinforcement ribs on the casing to improve the strength of the casing. This will cause the weight of the casing to increase significantly, making it impossible for the motor to achieve a lightweight design. At the same time, the overly dense reinforcement ribs on the casing will also affect the setting of features such as the oil inlet and outlet holes and the water inlet and outlet holes on the casing. Since these features are difficult to avoid the dense reinforcement ribs, the overall radial size of the motor will become larger to accommodate these features, making it impossible for the motor to achieve a compact design. In addition, some manufacturers install circumferential and axial reinforcement ribs on the casing. Although this improves the strength of the casing, the distribution of such reinforcement ribs and the distribution of the connection points between them are too sparse and irregular, and cannot evenly and effectively improve the overall strength and rigidity of the casing.

[0040] Therefore, the present invention creatively proposes a motor casing and a motor assembly, wherein the motor casing includes a first reinforcing rib, a second reinforcing rib and a third reinforcing rib which are arranged on the outer peripheral surface of the casing and are staggered with each other. By arranging the first reinforcing rib, the second reinforcing rib and the third reinforcing rib which are inclined at a certain angle in the axial direction of the casing, the structural strength and rigidity of the casing in multiple directions are strengthened; at the same time, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are respectively spaced apart at a first preset distance, a second preset distance and a third preset distance, so that the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are distributed according to a certain rule, thereby evenly improving the structural strength and rigidity of the corresponding area of the casing, thereby effectively improving the overall strength and rigidity of the casing, improving the frequency sweeping characteristics of the casing and improving the vibration resistance of the casing, thereby improving the NVH performance of the motor.

[0041] The present invention will be described in detail below through specific embodiments.

[0042] Example 1

[0043] Reference Figures 1 to 5As shown, this embodiment provides a motor housing, which includes a housing 1 and first, second, and third reinforcing ribs 2, 3, and 4 disposed on the outer circumference of the housing 1 and interlaced with each other. The first reinforcing ribs 2 extend along a first direction to surround the housing 1, and there are at least two of the first reinforcing ribs 2, which are spaced apart at a first preset distance along the axial direction of the housing 1, thereby distributing a certain number of reinforcing rib structures along the axial direction of the housing 1. The second and third reinforcing ribs 3 and 4 extend along a second and third directions, respectively. There are at least two of the second reinforcing ribs 3, which are spaced apart at a second preset distance along the outer circumference of the housing 1, and there are at least two of the third reinforcing ribs 4, which are spaced apart at a third preset distance along the outer circumference of the housing 1, thereby distributing a certain number of reinforcing rib structures along the outer circumference of the housing 1. A first preset angle A is formed between the first direction and the circumferential direction of the housing 1, a second preset angle B is formed between the second direction and the axial direction of the housing 1, and a third preset angle C is formed between the third direction and the axial direction of the housing 1, such that both the second and third reinforcing ribs 3 and 4 interlace with the first reinforcing ribs.

[0044] Among them, 0°<A≤90°, 0°<B<90°, 0°<C<90°, so that there is a staggered relationship between different reinforcing rib structures, so that different reinforcing rib structures support each other, further enhancing the strength and rigidity of the shell 1.

[0045] Reference Figure 1 and Figure 2 As shown, the X direction represents the axial direction of the housing 1, and an example of the three angles A, B and C is shown in FIG. Figure 2 shown.

[0046] It should be noted that the word "staggered" can also be written as "crossed," and specific shapes include "X," "T," and related variations. In some examples, the staggered shape of the first reinforcing rib 2, the second reinforcing rib 3, and the third reinforcing rib 4 can be only an "X" shape or only a "T" shape; in this embodiment, the staggered shape includes both "X" and "T" shapes.

[0047] It should also be noted that the first preset distance, the second preset distance, and the third preset distance are all used to adjust the sparseness of the reinforcing ribs within a certain range on the shell 1, thereby adjusting the strength of the shell 1 within a certain range. Generally, the first preset distance, the second preset distance, and the third preset distance all include constants, sets containing a finite number of positive real numbers, linear functions, etc., and the strength of each part and the entire shell 1 can be designed according to the actual working conditions of the motor. For example, in an alternative example, along the axial direction of the shell 1, the shell 1 needs to face three different working conditions, and the required structural strength is also different. Therefore, the first preset distance is set to include a set of three natural numbers. Specifically, the shell 1 is divided into three parts along the axial direction of the shell 1. The first reinforcing ribs 2 in each part are regularly spaced with a natural number as the limit, so that different parts of the shell 1 can evenly strengthen the structural strength and stiffness to meet the working conditions. The second preset distance and the third preset distance corresponding to the second reinforcing rib 3 and the third reinforcing rib 4, respectively, can be deduced in the same way.

[0048] It is understandable that the shape of the housing 1 can be prism-shaped, cylindrical-shaped, or any other polygonal shape. In this embodiment, the shape of the housing 1 is cylindrical.

[0049] In another alternative example, if the shell 1 faces the same operating conditions along its axial direction, the first preset distance is set to a constant, i.e., the first reinforcing ribs 2 are evenly spaced along the axial direction of the shell 1, thereby uniformly enhancing the structural strength and rigidity of the shell 1 along its axial direction, so that the shell 1 can meet the same operating conditions along its own axial direction. The second preset distance and the third preset distance corresponding to the second reinforcing ribs 3 and the third reinforcing ribs 4, respectively, can be deduced similarly.

[0050] In this embodiment, the first preset distance, the second preset distance, and the third preset distance are all constants, thereby ensuring that the first reinforcing ribs 2 are evenly spaced along the axial direction of the housing 1, and that the second reinforcing ribs 3 and the third reinforcing ribs 4 are evenly spaced along the axial direction of the housing 1. This ensures that all reinforcing ribs are regularly distributed at appropriate distances, thereby evenly strengthening the structural strength of the housing 1. Preferably, the values of the three constants, namely, the first preset distance, the second preset distance, and the third preset distance, are equal, thereby more evenly strengthening the structural strength and rigidity of the housing 1.

[0051] It should be noted that the constant is an unchanging quantity, which means that the first preset distance, the second preset distance and the third preset distance are all values that do not change. In other words, the first reinforcing ribs 2, the second reinforcing ribs 3 and the third reinforcing ribs 4 are all distributed at equal intervals, so that the reinforcing ribs on the shell 1 are evenly distributed, thereby evenly improving the strength and rigidity of the shell 1.

[0052] In some examples, the first preset angle A can be 15°, 30°, 45°, 60°, 90°, and any angle value within the set range of A. Similarly, the second preset angle B and the third preset angle C can also be 15°, 30°, 45°, 60°, and any angle value between 0° and 90° (excluding boundary values).

[0053] Preferably, in this embodiment, the first preset angle A is 90°, that is, the first direction is parallel to the circumference of the shell 1 . In other words, any first reinforcing rib 2 is arranged around the outer surface of the shell 1 along the circumference of the shell 1 .

[0054] It is understandable that the length of the first reinforcing rib 2 can be longer or shorter, and can be specifically designed according to the working conditions of the motor. In this embodiment, to ensure the structural strength and rigidity of the housing 1 and prevent the housing 1 from twisting in its own circumferential direction, the first reinforcing rib 2 is equal to the outer circumference of the housing 1 where it is located.

[0055] In some examples, the second preset angle B and the third preset angle C have the same angle value. It is understandable that in order to uniformly increase the structural strength and rigidity of the shell 1, the lengths of the second reinforcing ribs 3 and the third reinforcing ribs 4 are set to the same value, and their shapes are long strips. There are two forms of interlacing of the second reinforcing ribs 3 and the third reinforcing ribs 4. When the interlacing form of the two is an "X" shape, the second reinforcing ribs 3 and the third reinforcing ribs 4 are divided into two parts with the interlacing point as the boundary. The second reinforcing ribs 3 and the third reinforcing ribs 4 in the two parts are symmetrical about the axis of the shell 1 on the outer surface of the shell 1 through a positive projection line passing through the interlacing point, thereby uniformly improving the structural strength and rigidity of the shell 1 in its own axial direction; when the interlacing form of the two is a "T" shape, the second reinforcing ribs 3 and the third reinforcing ribs 4 are symmetrical about the axis of the shell 1 on the outer surface of the shell 1 through a positive projection line passing through the interlacing point, thereby uniformly improving the structural strength and rigidity of the shell 1 in its own axial direction.

[0056] Furthermore, it is understood that, generally, to ensure the strength of the rib structure, the first rib 2, the second rib 3, and the third rib 4 are all continuous strip structures. Furthermore, the housing 1 may also include a fourth rib, a fifth rib, or even rib structures in multiple directions. The actual requirements will depend on the size of the housing 1 and other structures thereon. However, to simplify the surface structure of the housing 1, the number of rib structures should generally be minimized.

[0057] Preferably, in this embodiment, the second reinforcing ribs 3 and the third reinforcing ribs 4 distributed on the main portion of the outer surface of the shell 1 are staggered in an "X" shape, thereby enhancing the torsional resistance of the shell 1.

[0058] In some examples, the number of first reinforcing ribs 2 can be determined based on the size of the shell 1. For example, in this embodiment, the number of first reinforcing ribs 2 is two, and the second reinforcing ribs 3 and the third reinforcing ribs 4 are staggered in an "X" shape with the first reinforcing rib 2 to enhance the connection strength between different reinforcing rib structures, thereby further enhancing the structural strength and rigidity of the shell 1.

[0059] It should be noted that there is a first angle and a second angle between any first reinforcing rib 2 and the second reinforcing rib 3 and the third reinforcing rib 4 intersecting therewith, respectively, and there is a third angle between any second reinforcing rib 3 and the third reinforcing rib 4 intersecting therewith; wherein, at least two of the first angle, the second angle and the third angle have equal angle values, so that the reinforcing rib structure forms isosceles triangle structures in the first direction, so that the shell 1 forms isosceles triangle reinforcement areas in the first direction, that is, the overall structural strength and stiffness of the shell 1 are uniformly improved by multiple local uniform reinforcements.

[0060] Preferably, in this embodiment, the angle values of the first angle, the second angle and the third angle are all equal, so that the shell 1 forms equilateral triangles in the first direction, and the triangular structure is a very stable structure among the polygonal structures, and the equilateral triangle structure is the most stable structure among the triangular structures. Therefore, the reinforcing rib structure further improves the overall structural strength and rigidity of the shell 1.

[0061] It should be noted that since the basic staggering methods between different reinforcing ribs include "T" and "X" shapes, when different reinforcing ribs are staggered in an "X" shape, more polygonal structures will be formed, so that more areas of the shell 1 will form polygonal reinforcement structures composed of different reinforcing ribs.

[0062] Furthermore, in some examples, any second reinforcing rib 3 is staggered in an "X" shape with at least two first reinforcing ribs 2 and at least one third reinforcing rib 4, so that at least two triangular structures are formed between one second reinforcing rib 3, two first reinforcing ribs 2 and one third reinforcing rib 4, and on the premise that the first angle, the second angle and the third angle are equal, at least two equilateral triangular structures can be formed between the former, thereby increasing the number of triangular reinforcing rib structures composed of different reinforcing ribs on the surface of the shell 1, so as to further uniformly improve the structural strength and rigidity of the shell 1.

[0063] Preferably, refer to Figure 1As shown, the head end of any second reinforcing rib 3 is connected to the head end of an adjacent third reinforcing rib 4, and its tail end is connected to the tail end of another adjacent third reinforcing rib 4, thereby reducing the area without reinforcing rib structure on the surface of the shell 1, and at the same time, a rigid connection is generated between adjacent second reinforcing ribs 3 and adjacent third reinforcing ribs 4, thereby improving the unity between all second reinforcing ribs 3 and all third reinforcing ribs 4, and thus improving the structural strength and rigidity of the shell 1. It should also be emphasized that, with reference to Figure 1 As shown, in the above case, after the first reinforcing rib 2, the second reinforcing rib 3 and the third reinforcing rib 4 are interlaced with each other on the shell 1, any group of reinforcing rib structures (consisting of a first reinforcing rib 2, a second reinforcing rib 3, and a third reinforcing rib) forms an equilateral triangle structure, and the adjacent equilateral triangle structures are connected to each other to form a regular hexagonal structure distributed along the circumference of the shell 1, thereby uniformly improving the structural strength and stiffness of the main part of the shell 1, and the regular triangle structures distributed on both sides of the regular hexagonal structure uniformly improve the structural strength and stiffness of the two ends of the shell 1, that is, the structural strength and stiffness of the shell 1 are uniformly improved in a primary and secondary manner, thereby improving the sweep frequency characteristics of the motor housing, improving the vibration resistance of the motor housing, and thereby improving the NVH performance of the motor.

[0064] In some examples, any second reinforcing rib 3 and at least one third reinforcing rib 4 are interlaced in an "X" shape to form an interlaced point, and at least one first reinforcing rib 2 is interlaced with the second reinforcing rib 3 through the interlaced point. Figure 4 As shown, under the premise that the first, second, and third angles are equal, an hourglass-shaped rib structure is formed between the sequentially arranged second and third ribs 3 and 4. The first rib 2 then passes through all the intersection points on an outer circumference of the shell 1, dividing the hourglass-shaped rib structure into two similar equilateral triangles. This results in multiple identical equilateral triangle-shaped rib structures on the surface of the shell 1, uniformly improving the structural strength and rigidity of the shell 1.

[0065] In addition, it should be noted that the connection between the first reinforcing rib 2, the second reinforcing rib 3, and the third reinforcing rib 4 and the housing 1 can be achieved by welding, bonding, or the like. This only requires a stable connection between the reinforcing rib structure and the housing 1, without the need for additional large intermediate connectors such as screws. In this embodiment, the reinforcing rib structure and the housing 1 can be integrally formed by pouring molten metal into a pre-designed mold.

[0066] In some examples, the edges of the first reinforcing rib 2 and / or the second reinforcing rib 3 and / or the third reinforcing rib 4 are provided with rounded corners, thereby eliminating some stress between the reinforcing rib structure and the shell 1 and enhancing the reinforcing effect of the reinforcing rib structure on the structural strength and rigidity of the shell 1.

[0067] In some examples, reference Figure 5 As shown, the first reinforcing rib 2, the second reinforcing rib 3, and the third reinforcing rib 4 all have a height of H and a width of W. Their dimensional relationship can be H ≥ W or W ≥ H. In this embodiment, H and W of the three can be the same value. The top and bottom radius of the first reinforcing rib 2 and / or the second reinforcing rib 3 and / or the third reinforcing rib 4 can be set to reasonable values based on the values of W and H.

[0068] In an alternative example, in order to further enhance the structural strength and rigidity of the ends of the shell 1, the head ends of all the second reinforcing ribs 3 and the third reinforcing ribs 4 are connected to one first reinforcing rib 2, and their tail ends are connected to another first reinforcing rib 2. Specifically, a first reinforcing rib 2 is provided at each of the two axial ends of the shell 1, and then the remaining first reinforcing ribs 2 and all the second reinforcing ribs 3 and the third reinforcing ribs 4 are provided between the two first reinforcing ribs 2, that is, the head ends and tail ends of all the second reinforcing ribs 3 and the third reinforcing ribs 4 are connected in series through the two first reinforcing ribs 2, so that the head ends and tail ends of all the second reinforcing ribs 3 and the third reinforcing ribs 4 form an integral rigid connection, thereby improving the structural strength and rigidity of the two axial ends of the shell 1.

[0069] In another alternative example, referring to Figures 1 to 3 As shown, the motor housing includes a mounting structure provided on the outer peripheral surface of the housing 1. The mounting structure includes mounting boss groups 5 provided at both axial ends of the housing 1. The head and tail ends of all second reinforcing ribs 3 and third reinforcing ribs 4 are respectively connected to adjacent mounting boss groups 5. Specifically, the mounting boss groups 5 generally include a plurality of mounting bosses with bolt holes, which are used to be bolted to the end cover to close the motor housing. That is, by connecting the head and tail ends of the second reinforcing ribs 3 and third reinforcing ribs 4 to adjacent mounting boss groups 5, the connection strength between the second and third reinforcing ribs 3 and 4 and the housing 1 is improved, and the head and tail ends of all second and third reinforcing ribs 3 and 4 are rigidly connected, thereby improving the structural strength and rigidity of the two axial ends of the housing 1.

[0070] Example 2

[0071] Corresponding to the above-mentioned embodiment 1, this embodiment further provides a motor assembly, comprising a motor housing and a stator and rotor assembly disposed within the motor housing. By improving the structural strength and rigidity of the motor housing, the motor assembly can operate stably under more complex working conditions.

[0072] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0074] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A motor housing, characterized in that: The motor housing includes a shell and a first reinforcing rib, a second reinforcing rib and a third reinforcing rib arranged on the outer circumference of the shell and staggered with each other; The first reinforcing ribs extend along a first direction to surround the shell, and there are at least two first reinforcing ribs distributed along the axial direction of the shell at a first preset distance; The second reinforcing ribs and the third reinforcing ribs extend along the second direction and the third direction respectively, there are at least two second reinforcing ribs and they are distributed along the outer circumference of the shell at a second preset distance, and there are at least two third reinforcing ribs and they are distributed along the outer circumference of the shell at a third preset distance; A first preset angle A is formed between the first direction and the axial direction of the shell, a second preset angle B is formed between the second direction and the axial direction of the shell, and a third preset angle C is formed between the third direction and the axial direction of the shell, so that both the second reinforcing rib and the third reinforcing rib are staggered with the first reinforcing rib; Among them, 0°<A≤90°, 0°<B<90°, 0°<C<90°.

2. The motor housing according to claim 1, characterized in that: There is a first angle and a second angle between any one of the first reinforcing ribs and the second reinforcing ribs and the third reinforcing ribs intersecting therewith, respectively; there is a third angle between any one of the second reinforcing ribs and the third reinforcing ribs intersecting therewith; At least two of the first angle, the second angle, and the third angle have equal angle values.

3. The motor housing according to claim 2, characterized in that: The first angle, the second angle and the third angle are all equal in value.

4. The motor housing according to claim 3, characterized in that: Any one of the second reinforcing ribs is staggered in an "X" shape with at least two of the first reinforcing ribs and at least one of the third reinforcing ribs.

5. The motor housing according to claim 3, characterized in that: Any one of the second reinforcing ribs is interlaced with at least one of the third reinforcing ribs in an "X" shape to form an interlaced point, and at least one of the first reinforcing ribs is interlaced with the second reinforcing rib through the interlaced point.

6. The motor housing according to claim 1, characterized in that: The first preset angle A is 90°.

7. The motor housing according to claim 1, characterized in that: The second preset angle B is equal to the third preset angle C.

8. The motor housing according to claim 1, characterized in that: The motor housing includes a mounting structure arranged on the outer peripheral surface of the housing, and the mounting structure includes a mounting boss group respectively arranged at the axial ends of the housing, and the head end and tail end of all the second reinforcing ribs and the third reinforcing ribs are respectively connected to the adjacent mounting boss groups.

9. The motor housing according to claim 1, characterized in that: The edges of the first reinforcing rib and / or the second reinforcing rib and / or the third reinforcing rib are provided with rounded corners.

10. The motor housing according to any one of claims 1 to 9, characterized in that: The head end of any one of the second reinforcing ribs is connected to the head end of an adjacent third reinforcing rib, and the tail end of any one of the second reinforcing ribs is connected to the tail end of another adjacent third reinforcing rib.

11. A motor assembly, characterized in that: The invention comprises a motor casing according to any one of claims 1 to 10, and a stator and rotor assembly arranged in the motor casing.

Images