A motor housing and a motor

Abstract

The embodiment of the utility model provides a kind of motor shell and motor, it is related to motor field.The motor shell includes inner casing and outer casing, outer casing is set in the outside of inner casing and is formed with interlayer chamber with inner casing, multiple reinforcing ribs are arranged in interlayer chamber, the two sides of multiple reinforcing ribs are connected with inner casing and outer casing respectively, interlayer chamber is also filled with damping material.The motor shell is formed by inner casing and outer casing into two layers, and damping material is filled between inner casing and outer casing, to absorb the vibration energy of motor, to reduce noise;Reinforcing rib is also arranged between inner casing and outer casing, reinforcing rib connects inner casing and outer casing into one, increase the strength and rigidity of motor shell, can effectively prevent the deformation of motor shell, improve the service life of motor.The embodiment of the utility model also provides a kind of motor, including above-mentioned motor shell.

Description

Technical Field

[0001] This utility model relates to the field of motors, and more specifically, to a motor housing and a motor. Background Technology

[0002] Motor housings are typically single-layered. During operation, motors generate noise due to vibration. A single-layered housing cannot effectively reduce noise while the motor is running, resulting in loud noise. Furthermore, single-layered housings have poor strength and rigidity, making them prone to deformation during use and affecting the motor's lifespan. Utility Model Content

[0003] This utility model provides a motor housing and a motor, which can ensure the strength and rigidity of the motor housing while reducing noise.

[0004] The embodiments of this utility model can be implemented as follows: An embodiment of this utility model provides a motor housing, which includes: Inner shell; The outer shell is fitted over the inner shell and forms a sandwiched cavity with the inner shell. Multiple reinforcing ribs are provided in the sandwiched cavity, and the two sides of the multiple reinforcing ribs are connected to the inner shell and the outer shell respectively. The sandwiched cavity is also filled with vibration damping material.

[0005] Optionally, the inner shell, outer shell, and multiple reinforcing ribs are integrally molded.

[0006] Optionally, the multiple reinforcing ribs are all elongated strips, and the length direction of the multiple reinforcing ribs is along the axial direction of the inner shell.

[0007] Optionally, the multiple reinforcing ribs are all elongated strips, inclined in the axial direction of the inner shell, and arranged in a crisscross pattern.

[0008] Optionally, a damping body is provided on the reinforcing rib.

[0009] Optionally, the motor housing also includes an end cover, which is disposed at one end of the housing body and is sealed to the housing body. The end cover is also sealed to the inner housing.

[0010] Optionally, a sealing groove is provided on the end face of the outer casing, and a sealing element is provided in the sealing groove, which is in sealing contact with the end cover.

[0011] Optionally, the end cap has a sealing step, and the outer wall surface of the inner housing fits tightly with the sealing step.

[0012] Optionally, the width of the reinforcing ribs gradually changes, and the end of the reinforcing rib with the smaller width is closer to the end cap.

[0013] An embodiment of this utility model also provides an electric motor, including a stator, a rotor and the motor housing, wherein the stator is connected to the inner housing, the rotor is disposed inside the stator, and the rotor and the housing are rotatably connected.

[0014] The beneficial effects of this utility model embodiment: The motor housing comprises an inner shell and an outer shell. The outer shell is fitted over the inner shell, forming a sandwich cavity. Multiple reinforcing ribs are installed within the sandwich cavity, with their sides connected to both the inner shell and the outer shell. The sandwich cavity is also filled with vibration-damping material. This motor housing, consisting of an inner shell and an outer shell forming two layers, with vibration-damping material filling the space between them, absorbs the motor's vibration energy, thereby reducing noise. The reinforcing ribs further connect the inner shell and outer shell, increasing their strength and rigidity, effectively preventing deformation and extending the motor's lifespan.

[0015] The motor includes a motor housing, which has all the functions of a motor housing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the motor housing provided in an embodiment of this utility model; Figure 2 This is a schematic axial cross-sectional view of the motor housing provided in an embodiment of the present invention; Figure 3 This is a radial cross-sectional view of the motor housing provided in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the fit of the outer shell, inner shell, and sealing element provided in an embodiment of this utility model; Figure 5 This is a schematic diagram showing a sealing groove provided on the outer shell in an embodiment of the present invention; Figure 6 This is a schematic diagram of the end cap provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the end face of the inner shell, outer shell, and reinforcing ribs in an embodiment of the present invention. Figure 8 for Figure 7A schematic cross-sectional view along the middle AA.

[0018] Icons: 10-Inner shell; 20-Outer shell; 201-Sealing groove; 202-End flange; 203-First bearing limit seat; 30-Interlayer chamber; 301-Reinforcing rib; 40-End cover; 401-Sealing step; 402-Second bearing limit seat; 50-Seal. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0027] Currently, most motors on the market have single-layer housings. While single-layer housings are easier to manufacture and save materials, they cannot effectively reduce noise during motor operation, especially when the motor is vibrating at high frequencies, resulting in increased noise. Furthermore, single-layer housings are prone to resonance, which can further amplify noise. Besides failing to effectively isolate motor noise, single-layer housings also suffer from low strength and rigidity, making them susceptible to deformation during use and affecting the motor's lifespan.

[0028] To address the aforementioned problems, embodiments of this utility model provide a motor housing and a motor that can solve the problems described above, which will be described in detail below.

[0029] Please refer to Figures 1 to 3The motor housing includes an inner housing 10 and an outer housing 20. The outer housing 20 is fitted outside the inner housing 10 and forms a sandwich chamber 30 with the inner housing 10. Multiple reinforcing ribs 301 are provided in the sandwich chamber 30. The two sides of the multiple reinforcing ribs 301 are respectively connected to the inner housing 10 and the outer housing 20. The sandwich chamber 30 is also filled with vibration damping material. The motor housing of this embodiment is provided with an inner and outer double-layer shell, and vibration damping material is filled between the inner shell 10 and the outer shell 20 to absorb the vibration energy generated during motor operation, thereby reducing motor noise. The double-layer arrangement of the inner shell 10 and the outer shell 20 also avoids the possibility of shell resonance, preventing further noise increase. In addition, a reinforcing rib 301 is provided between the inner shell 10 and the outer shell 20, which connects the inner shell 10 and the outer shell 20 into one unit. The motor housing formed by the reinforcing rib 301, the inner shell 10 and the outer shell 20 has high strength and rigidity. Compared with the original single-layer motor housing, the motor housing of this embodiment is not easily deformed, which is beneficial to improving the service life of the motor.

[0030] The inner shell 10 and the outer shell 20 are concentrically arranged. The height of the interlayer cavity 30 formed by the inner shell 10 and the outer shell 20 is 3~5mm, for example, 3mm, 4mm or 5mm, etc. The height of the reinforcing rib 301 is also adapted to the height of the interlayer cavity 30, so as to ensure that the outer shell 20 will not collapse or deform when the reinforcing rib 301 is set in the interlayer cavity 30.

[0031] The inner shell 10, outer shell 20, and reinforcing ribs 301 can be integrally formed, or they can be manufactured separately and then welded or bonded together. Both the inner shell 10 and outer shell 20 are cylindrical, with one end of the outer shell 20 closed, and one end of the inner shell 10 connected to the closed end of the outer shell 20. An end cap 40 is connected to the open end of the outer shell 20, and both the outer shell 20 and inner shell 10 are sealed to the end cap 40. For details, refer to [reference needed]. Figures 4 to 6 The end cap 40 has a sealing step 401, which surrounds the circumference of the end cap 40. When the end cap 40 is connected to the outer shell 20, the sealing step 401 is in contact with the end face of the outer shell 20, and the inner wall of the sealing step 401 is in close contact with the outer wall of the inner shell 10. A sealing groove 201 is formed on one end face of the opening of the outer shell 20, and a sealing element 50 is provided in the sealing groove. When the sealing step 401 of the end cap 40 is in contact with the end face of the outer shell 20, the sealing element 50 is in close contact with the sealing step 401, thereby achieving a sealing fit. The sealing element 50 can be an O-ring, a sealing ring with a rectangular cross-section, or a suitable sealing gasket.

[0032] An end face flange 202 is provided on the outer wall of one open end of the outer casing 20, and a threaded hole is provided on the sealing step 401 of the end cover 40. The sealing step 401 of the end cover 40 is adapted to the end face flange 202. When the end cover 40 is connected to the outer casing 20, the sealing step 401 of the end cover 40 abuts against the end face flange 202, and the threaded holes on the end face flange 202 are aligned with the threaded holes on the sealing step 401. The end cover 40 and the outer casing 20 are connected together by bolts or screws. When the end cover 40 and the outer casing 20 are connected together, the sealing element 50 is tightly fitted with the outer casing 20 and the sealing step 401, and the inner casing 10 is tightly fitted with the sealing step 401.

[0033] The sealed connection between the sealing step 401 and the outer casing 20 prevents external dust and other contaminants from entering the interlayer chamber 30, thus avoiding contamination of the vibration damping material inside the interlayer chamber 30. The sealed fit between the end face of the inner casing 10 and the end cover 40 ensures that the vibration damping material inside the interlayer chamber 30 will not enter the motor cavity (the interior of the inner casing 10). The vibration damping material installed inside the interlayer chamber 30 absorbs the vibrations generated during motor operation, thereby reducing motor noise. The vibration damping material can be small-diameter, porous rubber granules, polyurethane granules, or other materials that absorb vibrations. The vibration damping material can have a granular structure or other shapes; there are no limitations on this.

[0034] refer to Figure 7 The number of reinforcing ribs 301 within the interlayer chamber 30 is multiple, for example, 6, 8, 10, or 12. These reinforcing ribs 301 are arranged at equal or unequal intervals within the interlayer chamber 30. When the multiple reinforcing ribs 301 are arranged at equal intervals along the outer periphery of the inner shell 10, a balance between the weight, rigidity, and strength of the motor housing can be achieved. When the multiple reinforcing ribs 301 are arranged at unequal intervals, it can accommodate the specific torque spectrum characteristics of the motor.

[0035] refer to Figure 8 In this embodiment, the multiple reinforcing ribs 301 are all elongated strips, and their length direction is along the axial direction of the inner shell 10. Of course, the multiple reinforcing ribs 301 can also be inclined to the axial direction of the inner shell 10, so that the multiple reinforcing ribs 301 are arranged crosswise. The inclination angle of the reinforcing ribs 301 can be 45 degrees. The reinforcing ribs 301 are arranged spirally in the interlayer cavity 30. The crosswise arrangement of the multiple reinforcing ribs 301 is beneficial to enhancing the overall structural strength and rigidity of the motor shell and avoiding deformation.

[0036] The width of the reinforcing rib 301 can be the same or different at different locations. In this embodiment, the width of the reinforcing rib 301 gradually changes, and the end of the reinforcing rib 301 with the smaller width is closer to the end cap 40. Specifically, refer to... Figure 8 The width of the reinforcing rib 301 changes linearly from one end to the other, making the width of the reinforcing rib 301 continuously change. The gradually changing reinforcing rib 301 can increase the rigidity of the motor housing and improve the overall strength and quality of the motor housing. The gradient of the reinforcing rib 301 can also be adjusted as needed. For example, the fillet radius of one end of the reinforcing rib 301 is 1.5mm, and the fillet radius of the other end is 7.5mm.

[0037] Optionally, the elongated reinforcing ribs 301 can be intermittently arranged with a gap of 1mm, and damping bodies can be filled at the gaps to absorb the vibration energy of the motor. Alternatively, grooves can be formed on the reinforcing ribs 301, and damping bodies can be filled in the grooves to reduce vibration. The damping bodies can be rubber blocks, silicone blocks, or other soft materials.

[0038] Optionally, the reinforcing rib 301 may also be curved in the length direction, and its cross-section may be fan-shaped. This embodiment does not limit the shape of the reinforcing rib 301.

[0039] It is worth mentioning that the reinforcing rib 301 is made of the same material as the inner shell 10 and the outer shell 20, which can be aluminum alloy, magnesium alloy or other materials. In order to increase the strength of the reinforcing rib 301, a strength enhancement layer of a certain thickness can be coated on the surface of the reinforcing rib 301, such as a carbon fiber material with a thickness of 0.3~0.5mm.

[0040] To facilitate the installation of the motor rotor, a first bearing retaining seat 203 is provided at the closed end of the outer casing 20, and a second bearing retaining seat 402 is provided on the end cover 40. By installing bearings on the first bearing retaining seat 203 and the second bearing retaining seat 402, the motor rotor can be easily assembled. The shaft on the motor rotor is rotatably engaged with the bearings on the first bearing retaining seat 203 and the second bearing retaining seat 402. The motor stator is installed on the inner wall of the inner casing 10, and the motor stator is sleeved on the outside of the motor rotor.

[0041] The motor housing of this utility model embodiment has a two-layer structure of inner housing 10 and outer housing 20. At the same time, a vibration damping material layer is provided in the interlayer cavity 30, which can effectively reduce motor noise. Meanwhile, a reinforcing rib 301 is provided between the inner housing 10 and the outer housing 20, which strengthens the overall structural strength and rigidity of the motor housing, prevents deformation of the motor housing, and helps to improve the service life of the motor.

[0042] An embodiment of this utility model also provides an electric motor, including a stator, a rotor, and the aforementioned motor housing. The stator is connected to the inner housing 10, and the rotor is disposed inside the stator, and the rotor is rotatably connected to the outer housing 20. Since the motor stator and motor rotor are commonly used components in the art, they will not be described in detail here. The motor using the aforementioned motor housing has low noise and a long service life.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A motor housing, characterized in that, include: Inner shell (10); The outer shell (20) is fitted outside the inner shell (10) and forms a sandwich chamber (30) with the inner shell (10). The sandwich chamber (30) is provided with a plurality of reinforcing ribs (301). The two sides of the plurality of reinforcing ribs (301) are respectively connected to the inner shell (10) and the outer shell (20). The sandwich chamber (30) is also filled with vibration damping material.

2. The motor housing according to claim 1, characterized in that, The inner shell (10), the outer shell (20) and the plurality of reinforcing ribs (301) are integrally formed.

3. The motor housing according to claim 1, characterized in that, The plurality of reinforcing ribs (301) are all elongated strips, and the length direction of the plurality of reinforcing ribs (301) is along the axial direction of the inner shell (10).

4. The motor housing according to claim 1, characterized in that, The plurality of reinforcing ribs (301) are all elongated strips, and the plurality of reinforcing ribs (301) are inclined to the axial direction of the inner shell (10), and the plurality of reinforcing ribs (301) are arranged to cross each other.

5. The motor housing according to claim 1, characterized in that, A damping body is provided on the reinforcing rib (301).

6. The motor housing according to claim 1, characterized in that, The motor housing also includes an end cover (40), which is disposed at one end of the housing body (20). The end cover (40) is sealed to the housing body (20) and is also sealed to the inner housing (10).

7. The motor housing according to claim 6, characterized in that, The end face of the outer shell (20) is provided with a sealing groove (201), and a sealing element (50) is provided in the sealing groove (201). The sealing element (50) is sealed to the end cover (40).

8. The motor housing according to claim 6, characterized in that, The end cap (40) has a sealing step (401), and the outer wall surface of the inner shell (10) is in close contact with the sealing step (401).

9. The motor housing according to claim 6, characterized in that, The width of the reinforcing rib (301) gradually changes, and the end of the reinforcing rib (301) with a smaller width is close to the end cap (40).

10. An electric motor, characterized in that, include: The stator, rotor and motor housing according to any one of claims 1-9, wherein the stator is connected to the inner housing (10), the rotor is disposed inside the stator, and the rotor is rotatably connected to the outer housing (20).

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