Sound insulation structure, motor assembly and vehicle

Abstract

The utility model relates to a sound insulation structure, motor assembly and vehicle relate to equipment noise reduction technical field, be used to solve the problem that the existing sound insulation structure cannot guarantee to fit the surface of noise source equipment. The sound insulation structure includes the first sound insulation part and the second sound insulation part who are connected with each other, and the first sound insulation part and the second sound insulation part are opposite to fold and cover the different surface of noise source equipment respectively, wherein, the first sound insulation part includes the main part and the connecting part at the edge of main part, and the connecting part is connected with the second sound insulation part, and the connecting part is inclined to the direction of approaching noise source equipment relative to main part. The connecting part can reduce the actual folding angle when the first sound insulation part and the second sound insulation part are opposite to fold, and the folding stress also reduces accordingly, thereby improving the problem that the surface of sound insulation part and driving motor is not fitted due to folding stress, and reducing the risk of the problem.

Description

Technical Field

[0001] This utility model relates to the field of equipment noise reduction technology, specifically to a sound insulation structure, a motor assembly, and a vehicle. Background Technology

[0002] Most equipment generates noise during operation, primarily originating from components that provide driving force, such as engines, motors, air conditioning compressors, and various pumps in vehicles. Sound insulation structures are needed to reduce these noise sources. Taking motors in vehicles as an example, the industry currently uses sound-insulating pads to wrap around the motor to achieve noise reduction. To ensure effective sound insulation and avoid interference with other components around the motor, the sound-insulating pad needs to be fixed to the motor and conform to its surface. The existing solutions primarily use bolts and other connectors, along with screw holes on the motor surface, to fix the sound-insulating pad and ensure it adheres to the motor surface.

[0003] However, existing sound insulation structures have a high risk of not fitting snugly against the motor surface during practical application. For example, not every surface of a motor allows for the installation of screw holes or other connection structures, so there may be situations where a connection point cannot be established between the sound insulation structure and the corresponding surface of the motor. In such cases, localized misfitting of the sound insulation structure can easily occur, thus affecting the sound insulation effect. Utility Model Content

[0004] The purpose of this invention is to provide a sound insulation structure, a motor assembly, and a vehicle to solve the problem that existing sound insulation structures cannot guarantee a proper fit to the surface of noise source equipment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, this application provides a sound insulation structure for isolating noise from a noise source device. The sound insulation structure includes a first sound insulation part and a second sound insulation part connected to each other. The first sound insulation part and the second sound insulation part are folded over each other and respectively cover different surfaces of the noise source device. The first sound insulation part includes a main body and a connecting part located at the edge of the main body. The connecting part is connected to the second sound insulation part and is inclined relative to the main body towards the noise source device.

[0007] The sound insulation structure provided in the first aspect of this application utilizes a connecting portion in the first sound insulation section that is inclined toward the direction of the noise source device relative to the main body section. This reduces the actual folding angle when the first sound insulation section and the second sound insulation section are folded together, and the folding stress is also reduced. This improves the problem of non-fitting between the sound insulation section and the surface of the drive motor caused by the folding stress, and reduces the risk of this problem occurring.

[0008] In one possible implementation of the first aspect of this application, the angle of inclination of the connecting part relative to the main body part is greater than 0° and less than or equal to 90°.

[0009] In one possible implementation of the first aspect of this application, at least one of the first sound insulation part and the second sound insulation part is fixedly connected to the noise source device.

[0010] In one possible implementation of the first aspect of this application, there are multiple second sound-insulating parts, and the first sound-insulating part is configured as a polygon, with each side of the first sound-insulating part connected to a second sound-insulating part; wherein there are multiple connecting parts, and the multiple connecting parts are respectively connected to multiple second sound-insulating parts. In this way, due to the presence of multiple connecting parts, the folding stress caused by the relative folding of the first sound-insulating part and each second sound-insulating part can be reduced, thereby reducing the risk of non-fitting between the first sound-insulating part and each second sound-insulating part and the surface of the drive motor.

[0011] In one possible implementation of the first aspect of this application, among a plurality of second sound-insulating parts, two adjacent second sound-insulating parts connected to two adjacent sides of the first sound-insulating part are spaced apart, and each second sound-insulating part is folded relative to the first sound-insulating part toward the noise source device; wherein, the sound insulation structure also includes a plurality of fasteners, which are connected between two adjacent second sound-insulating parts. In this way, by fixing the edges of two adjacent second sound-insulating parts together with fasteners, the two adjacent second sound-insulating parts can fit more tightly, eliminating gaps between them and ensuring sound insulation effect.

[0012] In one possible implementation of the first aspect of this application, at least a portion of the plurality of second sound insulation parts are fixedly connected to the noise source device.

[0013] In one possible implementation of the first aspect of this application, multiple slits are provided at the connection between the first sound-insulating part and the second sound-insulating part, and the multiple slits are spaced apart along the extension direction of the fold between the first sound-insulating part and the second sound-insulating part. In this way, the slits effectively reduce the area of ​​the solid structure at the connection between the first sound-insulating part and the second sound-insulating part, thereby further reducing the folding stress between the first sound-insulating part and the second sound-insulating part structurally.

[0014] In one possible implementation of the first aspect of this application, a sound insulation layer is further included, which is disposed on the surfaces of the first sound insulation part and the second sound insulation part facing the noise source device, and the sound insulation layer is attached to the surface of the noise source device.

[0015] Secondly, this application provides an electric motor assembly, including a drive motor and the aforementioned sound insulation structure, wherein the sound insulation structure is enclosed within the drive motor.

[0016] Thirdly, this application provides a vehicle including the aforementioned motor assembly.

[0017] The beneficial effects of this utility model are:

[0018] (1) By using the connecting part of the first sound insulation part that is inclined towards the noise source device relative to the main body, the actual folding angle when the first sound insulation part and the second sound insulation part are folded together is reduced, and the folding stress is also reduced. This improves the problem of the sound insulation part and the surface of the drive motor not fitting together due to the folding stress, and reduces the risk of this problem.

[0019] (2) Due to the presence of multiple connecting parts, the folding stress caused by the relative folding of the first sound insulation part and each of the second sound insulation parts can be reduced, thereby reducing the risk of non-fitting between the first sound insulation part and each of the second sound insulation parts and the surface of the drive motor.

[0020] (3) By fastening the edges of two adjacent second sound insulation sections together, the two adjacent second sound insulation sections can fit together more tightly, eliminating gaps between them and ensuring sound insulation effect.

[0021] (4) The cut reduces the area of ​​the solid structure at the connection between the first sound insulation part and the second sound insulation part, thereby further reducing the folding stress between the first sound insulation part and the second sound insulation part from a structural perspective. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a sound insulation structure provided in an embodiment of this application;

[0023] Figure 2 for Figure 1 A partial schematic diagram of section AA;

[0024] Figure 3 A simplified schematic diagram of a folding structure for the first and second sound insulation parts provided in an embodiment of this application;

[0025] Figure 4 A simplified schematic diagram of another folding structure of the first sound insulation part and the second sound insulation part provided in the embodiments of this application;

[0026] Figure 5 for Figure 1 A partial schematic diagram of the structure shown;

[0027] Figure 6 for Figure 1 Exploded view of the structure shown.

[0028] Figure label:

[0029] 100-Sound insulation structure, 110-First main body, 120-Second main body, 10-First sound insulation part, 11-Main body part, 12-Connecting part, 20-Second sound insulation part, 30-Folding line, 31-Slit, 40-Snap fastener, 50-Sound insulation layer, 200-Drive motor, 201-First surface, 202-Second surface. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0032] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0033] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0034] This application provides a vehicle. The specific type of vehicle is not specifically limited in this application; for example, the vehicle provided in this application can be an electric vehicle, a hybrid electric vehicle, or a solar-powered vehicle. Furthermore, the vehicle provided in this application can also be of different forms. For example, the vehicle provided in this application can be a sedan, a sport utility vehicle (SUV), or a multi-purpose vehicle (MPV).

[0035] In some examples, such as electric vehicles, the vehicle includes an electric motor assembly that provides driving force. The electric motor assembly includes a drive motor 200 and a sound insulation structure 100 that surrounds the drive motor 200. The function of the sound insulation structure 100 is to reduce the operating noise of the drive motor 200 transmitted to the passenger compartment of the vehicle, thereby providing a quieter riding environment for the passenger compartment.

[0036] The tightness of the fit between the sound insulation structure 100 and the drive motor 200 is a crucial factor affecting the sound insulation effect. As described in the background section, if the sound insulation structure 100 and the drive motor 200 are not in close contact, it will negatively impact the sound insulation performance. Specifically, on the one hand, if the sound insulation structure 100 and the drive motor 200 are not in close contact, a gap will exist between them. Due to this gap, the sound insulation structure 100 may vibrate autonomously under the influence of the vibrations generated by the drive motor 200 during operation, thus generating additional noise and affecting the sound insulation effect. On the other hand, if the sound insulation structure 100 and the drive motor 200 are not in close contact, the sound insulation structure 100 may interfere with other components around the drive motor 200. This interference between components may further cause abnormal noises, thus affecting the sound insulation effect.

[0037] Furthermore, the reasons that cause the sound insulation structure 100 and the surface of the drive motor 200 to not fit together include those mentioned in the background section. Due to certain limitations, some surfaces of the drive motor 200 cannot be fitted with a connection structure for connecting the sound insulation structure 100. Without establishing a connection point through the connection structure, the sound insulation structure 100 is prone to separation from the surface of the drive motor 200 and not fitting together.

[0038] For example, in the area where the controller of the drive motor 200 is located, the surface of the drive motor 200 is the surface of the controller housing. Due to the small thickness of the controller housing and the limitations of the control components inside the housing, it is impossible to set connection structures such as screw holes on the surface of the controller housing. Therefore, a connection point cannot be established between the sound insulation structure 100 and the surface of the controller housing. Without a connection point, the sound insulation structure 100 is very prone to the aforementioned problem of not fitting the surface of the drive motor 200.

[0039] To address the aforementioned problems, this application provides a sound insulation structure 100. Please refer to [link / reference]. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of a sound insulation structure 100 provided in an embodiment of this application. Figure 2 for Figure 1 A partial schematic diagram of section AA. Figure 2 The dashed cross-sectional structure in the figure represents the noise source device that cooperates with the sound insulation structure 100 (in this embodiment, the noise source device is the drive motor 200 as an example). The sound insulation structure 100 is a folding structure formed by multiple sound insulation parts that can be folded relative to each other. Among the multiple sound insulation parts, there are first sound insulation parts 10 and second sound insulation parts 20 that are connected to each other. The first sound insulation parts 10 and second sound insulation parts 20 are used to cover different surfaces of the drive motor 200.

[0040] Specifically, the first sound insulation part 10 is used to cover the first surface 200a of the drive motor 200, and the second sound insulation part 20 is used to cover the second surface 200b of the drive motor 200. Since the first surface 200a and the second surface 200b of the drive motor 200 are not coplanar, the first sound insulation part 10 and the second sound insulation part 20 need to be folded relative to each other so that the first sound insulation part 10 and the second sound insulation part 20 respectively fit the first surface 200a and the second surface 200b.

[0041] When the first sound-insulating part 10 and the second sound-insulating part 20 are folded together, folding stress is generated within the material forming the sound insulation structure 100. This folding stress causes the folded first sound-insulating part 10 and the second sound-insulating part 20 to tend to move in the opposite direction to the folding direction; that is, the folding stress resists the folding of the first sound-insulating part 10 and the second sound-insulating part 20. To address this, a connecting structure (e.g., bolts and screw holes on the surface of the drive motor 200) can be used to fix the corresponding sound-insulating part to the surface of the drive motor 200, establishing a connection point to overcome the influence of the folding stress and maintain the fit between the sound-insulating part and the surface of the drive motor 200. However, in cases where a connection point cannot be established between part of the surface of the drive motor 200 and the sound-insulating part, the sound-insulating part is prone to misfitting with the surface of the drive motor 200 under the influence of the folding stress.

[0042] Based on this, please continue reading Figure 1 and Figure 2 The first sound insulation part 10 includes a main body part 11 and a connecting part 12. The connecting part 12 is located at the edge of the main body part 11 and is connected to the second sound insulation part 20. The connecting part 12 is inclined relative to the main body part 11 towards the drive motor 200 at an inclination angle of α. The main body part 11 can be used to fit against the first surface 200a. Therefore, compared to the case without the connecting part 12, due to the presence of the connecting part 12 and the inclination angle α, when the first sound insulation part 10 and the second sound insulation part 20 are folded relative to each other and fitted against the first surface 200a and the second surface 200b respectively, the actual folding angle is reduced, and the folding stress is also reduced. This improves the problem of non-fitting between the sound insulation part and the surface of the drive motor 200 caused by folding stress and reduces the risk of this problem occurring.

[0043] In some examples, Figure 2 From the perspective shown, the distance between the connection point of the connecting part 12 and the second sound insulation part 20 and the plane where the main body part 11 is located can be 10 to 15 mm. Combining the angle value of the tilt angle α, the width of the connecting part 12 can be determined according to the trigonometric function relationship, that is, the range of the width of the connecting part 12 is 10 / sinα to 15 / sinα, in mm.

[0044] Furthermore, for a further explanation of the principles of this application, please refer to [link / reference needed]. Figure 3 and Figure 4 , Figure 3 This is a simplified schematic diagram of a folding structure of the first sound insulation part 10 and the second sound insulation part 20 provided in an embodiment of this application. Figure 4 This is a simplified schematic diagram of another folding structure of the first sound insulation part 10 and the second sound insulation part 20 provided in the embodiments of this application, wherein, Figure 3 The folding structure shown is Figure 2 The structure shown is simplified. When the first sound insulation part 10 and the second sound insulation part 20 are folded together by 90°, Figure 4 In the folding structure shown, the actual folding angle β is 90°, while Figure 3 In the folding structure shown, the actual folding angle β is 51°.

[0045] Specifically Figure 3 In the structure shown, the connecting portion 12 of the first sound insulation part 10 is inclined relative to the main body part 11, and the inclination angle α is 39°. When the overall relative folding angle between the first sound insulation part 10 and the second sound insulation part 20 remains unchanged at 90°, the actual folding of the first sound insulation part 10 relative to the second sound insulation part 20 is only a partial folding of the connecting portion 12. Therefore, the actual folding angle β of the first sound insulation part 10 relative to the second sound insulation part 20 is only 51°. Compared to Figure 4 In the case where there is no connecting part 12, the actual folding angle of the first sound insulation part 10 is reduced, and the folding stress is also reduced. Therefore, the probability and risk of the sound insulation part not fitting properly with the surface of the drive motor 200 can be reduced.

[0046] In some examples, the first sound insulation part 10 does not establish a connection point with the first surface 200a, and the second sound insulation part 20 is fixedly connected to the second surface 200b through the aforementioned connection structure. Therefore, the second sound insulation part 20 can maintain its fit with the second surface 200b under the action of the connection structure. Due to the presence of the connecting part 12, the actual folding angle between the first sound insulation part 10 and the second sound insulation part 20 is reduced. Even if the first sound insulation part 10 does not establish a connection point with the first surface 200a, the reduction in the folding angle reduces the impact of folding stress, which can also reduce the probability and risk of the first sound insulation part 10 not fitting properly with the first surface 200a.

[0047] Furthermore, in cases where the second sound insulation part 20 does not establish a connection point with the second surface 200b, and the first sound insulation part 10 is fixedly connected to the first surface 200a via the aforementioned connection structure, the presence of the aforementioned connection part 12 can also achieve the fit between the second sound insulation part 20 and the second surface 200b. Moreover, even when both the first sound insulation part 10 and the first surface 200a, and the second sound insulation part 20 and the second surface 200b are fixedly connected via the aforementioned connection structure, the presence of the aforementioned connection part 12 can still reduce the impact of folding stress and assist the connection structure in maintaining the fit between the first sound insulation part 10 and the first surface 200a, and between the second sound insulation part 20 and the second surface 200b.

[0048] At the same time, it should be noted that, although Figure 2 The main body 11 and connecting part 12 of the first sound insulation part 10 exhibit a structure similar to a fold, but in fact, the main body 11 and connecting part 12 are not folded relative to each other. Instead, an inclination angle α is pre-constructed during the manufacturing of the first sound insulation part 10 (for example, by injection molding). Therefore, the inclination angle α is not caused by folding, but is formed during the manufacturing of the first sound insulation part 10. As a result, there is no folding stress between the main body 11 and connecting part 12.

[0049] In some examples, the tilt angle α can be 0° < α < 90°. Actual tests show that when the tilt angle α is not less than 30°, it can basically ensure that the first sound insulation part 10 and the first surface 200a are always in contact. Therefore, a further value of the tilt angle α can be 30° < α < 90°.

[0050] In some embodiments, please continue reading Figure 1 and Figure 2 A fold line 30 is formed at the connection between the first sound insulation part 10 and the second sound insulation part 20, allowing the first sound insulation part 10 and the second sound insulation part 20 to fold over relative to each other. The fold line 30 is manifested as a crease between the first sound insulation part 10 and the second sound insulation part 20. The fold line 30 includes multiple cuts 31, which are spaced apart along the extension direction of the fold line 30 (i.e., the crease). In this way, the cuts 31 effectively reduce the area of ​​the solid structure at the connection between the first sound insulation part 10 and the second sound insulation part 20, thereby further reducing the folding stress between the first sound insulation part 10 and the second sound insulation part 20 from a structural perspective.

[0051] In some embodiments, please continue reading Figure 1 and Figure 2Both the first sound insulation part 10 and the second sound insulation part 20 have a sound insulation layer 50 on their surfaces near the drive motor 200 to enhance the sound insulation effect. The surface of the sound insulation layer 50 is attached to the surface of the drive motor 200. For example, the surface of the sound insulation layer 50 and the surface of the drive motor 200 may only be partially attached. The sound insulation layer 50 may be made of polyurethane foam, and the first sound insulation part 10 and the second sound insulation part 20 may be made of PET (polyethylene terephthalate) plastic, specifically, PET plastic sheets.

[0052] Furthermore, the thickness of the sound insulation layer 50 is greater than that of the first sound insulation part 10 and the second sound insulation part 20. Since the sound insulation layer 50 can achieve the sound insulation function, the thickness of the first sound insulation part 10 and the second sound insulation part 20 can be minimized, thereby reducing the material thickness at the connection between the first sound insulation part 10 and the second sound insulation part 20 and reducing the folding stress caused by folding.

[0053] In some embodiments, please refer to Figure 5 and Figure 6 , Figure 5 for Figure 1 A partial schematic diagram of the structure shown. Figure 6 for Figure 1 An exploded view of the structure shown. The sound insulation structure 100 includes a first main body 110 and a second main body 120, combined with... Figure 1 and 2 As can be seen, the first body 110 and the second body 120 interlock and together enclose the drive motor 200. The first body 110 includes a first sound insulation part 10 and a plurality of second sound insulation parts 20. The first sound insulation part 10 is polygonal, and a second sound insulation part 20 is connected to each side of the polygon. For example, the first sound insulation part 10 is rectangular, and four second sound insulation parts 20 are respectively connected to the four sides of the rectangle.

[0054] Each edge of the first sound insulation part 10 is provided with a connecting part 12, and each connecting part 12 is connected to the corresponding second sound insulation part 20. In this way, due to the presence of multiple connecting parts 12, the folding stress caused by the relative folding of the first sound insulation part 10 and each second sound insulation part 20 (i.e., the folding stress at the fold line 30) can be reduced, thereby reducing the risk of non-fitting between the first sound insulation part 10 and each second sound insulation part 20 and the surface of the drive motor 200.

[0055] In some examples, the first main body 110 corresponds to the upper half of the drive motor 200, and the first sound insulation part 10 of the first main body 110 corresponds to the top surface of the drive motor 200. The first sound insulation part 10 is not connected to the top surface. At least some of the multiple second sound insulation parts 20 are fixedly connected to the side of the drive motor 200 through the above-mentioned connection structure, or all of the multiple second sound insulation parts 20 can be fixedly connected to the side of the drive motor 200 through the above-mentioned connection structure. In this way, for the first sound insulation part 10 that is not connected to the top surface of the drive motor 200, the risk of the first sound insulation part 10 not fitting properly to the top surface of the drive motor 200 can be further reduced by the second sound insulation parts 20 fixedly connected to the side of the drive motor 200 and the connecting part 12 that can reduce folding stress.

[0056] In some examples, the second body 120 corresponds to the lower half of the drive motor 200, and the above-mentioned connection structure can be provided on each surface of the lower half. Therefore, the second body 120 only includes a plurality of relatively folded second sound insulation parts 20.

[0057] In some embodiments, please continue reading Figure 5 and Figure 6 and combination Figure 1 and Figure 2 Each of the second sound-insulating parts 20 of the first main body 110 is folded relative to the first sound-insulating part 10 towards the drive motor 200, thereby enclosing the drive motor 200. Therefore, the second sound-insulating parts 20 are not connected to each other; that is, adjacent second sound-insulating parts 20 are spaced apart. Since the second sound-insulating part 20 is not a completely rigid structure, gaps can easily exist between adjacent second sound-insulating parts 20, which may cause high-decibel noise to propagate outward. Therefore, the edges of adjacent second sound-insulating parts 20 are fixedly connected by a fastener 40 (the fastener 40 can be, for example, in the form of Velcro), so that the adjacent second sound-insulating parts 20 fit more tightly, eliminating gaps and ensuring sound insulation effect.

[0058] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sound insulation structure for isolating noise from noise source equipment, characterized in that, The sound insulation structure (100) includes a first sound insulation part (10) and a second sound insulation part (20) connected to each other. The first sound insulation part (10) and the second sound insulation part (20) are folded over each other and respectively cover different surfaces of the noise source device. The first sound insulation part (10) includes a main body part (11) and a connecting part (12) located at the edge of the main body part (11). The connecting part (12) is connected to the second sound insulation part (20). The connecting part (12) is inclined relative to the main body part (11) towards the noise source device.

2. The sound insulation structure according to claim 1, characterized in that, The angle at which the connecting part (12) is tilted relative to the main body part (11) is greater than 0° and less than or equal to 90°.

3. The sound insulation structure according to claim 1, characterized in that, At least one of the first sound insulation part (10) and the second sound insulation part (20) is fixedly connected to the noise source device.

4. The sound insulation structure according to claim 1, characterized in that, The number of second sound insulation parts (20) is multiple, the first sound insulation part (10) is set as a polygon, and each side of the first sound insulation part (10) is connected to the second sound insulation part (20); wherein, the number of connecting parts (12) is multiple, and the multiple connecting parts (12) are respectively connected to the multiple second sound insulation parts (20).

5. The sound insulation structure according to claim 4, characterized in that, Among the plurality of second sound insulation parts (20), two adjacent second sound insulation parts (20) connected to the two adjacent sides of the first sound insulation part (10) are spaced apart, and each second sound insulation part (20) is folded relative to the first sound insulation part (10) toward the direction of the noise source device; The sound insulation structure also includes multiple buckles (40), which are connected between two adjacent second sound insulation parts (20).

6. The sound insulation structure according to claim 4, characterized in that, Of the plurality of second sound insulation parts (20), at least a portion of the second sound insulation parts (20) are fixedly connected to the noise source device.

7. The sound insulation structure according to any one of claims 1 to 6, characterized in that, A plurality of cuts (31) are provided at the connection between the first sound insulation part (10) and the second sound insulation part (20), and the plurality of cuts (31) are distributed at intervals along the extension direction of the crease between the first sound insulation part (10) and the second sound insulation part (20).

8. The sound insulation structure according to any one of claims 1 to 6, characterized in that, It also includes a sound insulation layer (50), which is disposed on the surface of the first sound insulation part (10) and the second sound insulation part (20) facing the noise source device, respectively, and the sound insulation layer (50) is attached to the surface of the noise source device.

9. A motor assembly, characterized in that, It includes a drive motor (200) and a sound insulation structure as described in any one of claims 1 to 8, the sound insulation structure being enclosed within the drive motor (200).

10. A vehicle, characterized in that, Includes the motor assembly as described in claim 9.

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