Acoustic package of motor

Abstract

The utility model provides a motor acoustic package, which comprises a main protective cover, a front end cover protective cover and a rear end cover protective cover, the main protective cover and the front end cover protective cover are mutually independent, the main protective cover and the front end cover protective cover as well as the main protective cover and the rear end cover protective cover are respectively detachably connected through a connecting unit, the front end cover protective cover is provided with a motor shaft avoiding hole, and the front end cover protective cover is provided with a motor shaft. And a flexible connecting part is arranged on the main shield. The front end cover shield and the rear end cover shield are respectively connected with the main shield through the connecting units, and the main shield and the front end cover shield are mutually independent to ensure that the main shield and the front end cover shield do not interfere with each other when being assembled with the motor, so that the operation of workers is facilitated, and the assembly efficiency of the acoustic package of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile noise reduction, in particular to a motor acoustic package. Background Art

[0002] NVH (Noise, Vibration, Harshness) is one of the comprehensive indicators for measuring automobile quality. Compared with traditional fuel vehicles, electric vehicles have obvious advantages in NVH performance because they do not have the vibration and noise generated by engine operation. However, the lower background noise of electric vehicles will highlight the operating noise of the electric drive system and be easily perceived by passengers. In order to improve ride comfort, existing technologies mainly use acoustic bags made of sound insulation materials to wrap the motor drive assembly, thereby reducing the noise transmitted from the electric drive system to the vehicle cabin.

[0003] The technical solution disclosed in the patent entitled "Motor Acoustic Package, Electric Drive System and Vehicle" (CN221162582U) includes an acoustic component 100 and a connecting component 200. The acoustic component 100 includes a first acoustic body 101, a second acoustic body 102, a third acoustic body 103 and a fourth acoustic body 104 to form an integral body, and the connecting component 200 is used to connect and fix the connecting portion of the acoustic component 100. When wrapping the motor, the acoustic component 100 of the above solution needs to ensure that the mounting position between the two is accurately positioned, otherwise a large gap will appear at the connecting portion of the connecting component 200, making assembly inconvenient. Utility Model Content

[0004] The purpose of the utility model is to provide a motor acoustic package, which makes the assembly between the acoustic package and the motor more convenient.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a motor acoustic package, including a main shield for wrapping the circumference of the motor body and a front end cover shield and a rear end cover shield respectively used to cover the outer surfaces of the front and rear end covers of the motor. The inner sides of the three are respectively in contact with the body surface of the motor to be assembled. The main shield and the front end cover shield are independent of each other. The main shield and the front end cover shield, and the main shield and the rear end cover shield are respectively detachably connected by connecting units. A motor shaft avoidance hole is provided on the front end cover shield, and a soft connection part arranged parallel to the axis of the motor shaft is provided on the main shield.

[0006] The motor acoustic package of the present invention consists of a main shield and front and rear end cover shields. The front and rear end cover shields are connected to the main shield through connecting units respectively. The main shield and the front end cover shield are independent of each other to ensure that they do not interfere with each other when assembled with the motor, which is convenient for workers' operation and improves the assembly efficiency of the motor acoustic package. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the expansion of the main shield of the motor acoustic package;

[0008] Figure 2 、 3 These are the expanded schematic diagrams of the front and rear end cover shields of the motor acoustic package;

[0009] Figure 4 Provide an isometric view of the motor acoustic package in pose;

[0010] Figure 5 for Figure 1 A partial enlarged view of

[0011] Figure 6 Provide a bottom view of the motor acoustic package.

[0012] Figure 7 This is an exploded view of the motor acoustic package. DETAILED DESCRIPTION

[0013] See also Figures 1 to 7 The motor acoustic package shown includes a main shield 10 for wrapping the circumference of the motor body and a front cover shield 20 and a rear cover shield 30 for covering the outer surfaces of the front and rear end covers of the motor respectively. The inner sides of the three are respectively in contact with the body surface of the motor to be assembled. The main shield 10 and the front cover shield 20 are independent of each other. The main shield 10 and the front cover shield 20 and the main shield 10 and the rear end cover shield 30 are respectively detachably connected by connecting units 40. A motor shaft avoidance hole 21 is provided on the front cover shield 20, and a soft connection part 11 arranged parallel to the axis of the motor shaft is provided on the main shield 10.

[0014] In this solution, the end cover at the protruding end of the motor shaft is defined as the front end cover of the motor, the end cover on the opposite side to the protruding end of the motor shaft is defined as the rear end cover, and the body surface between the front and rear end covers is defined as the body peripheral surface. The motor acoustic package wraps the entire motor body, which can not only soundproof and reduce noise, but also reduce the impact of motor vibration. Acoustic packages in the prior art are usually produced and assembled as a whole, that is, traditional acoustic packages are integrally formed, such as patent document CN221162582U. This design can reduce the workload of splitting and cutting during the production of the acoustic package, but it brings inconvenience to the assembly between the acoustic package and the motor. When there is a large assembly deviation between any part of the acoustic package and the motor during the assembly process, the positional relationship between the entire acoustic package and the motor needs to be adjusted together. This solution sets the main shield 10 and the front cover shield 20 to be independent of each other, which can well avoid the above problems. Furthermore, since the motor shaft extends beyond the surface of the motor body, the traditional acoustic package, taking into account that the cover surface on the front end cover side is integrally connected to the cover surface at the bottom of the motor, needs to design the size of the motor shaft avoidance hole 21 to be much larger than the motor shaft diameter, so as to facilitate the cover surface on the front end cover side of the motor to avoid the motor shaft during assembly. However, the front end cover shield 20 and the main shield 10 of the present application are independent of each other, so the size of the motor shaft avoidance hole 21 can be designed to be consistent with the diameter of the motor shaft, thereby improving the sound insulation and noise reduction effect of the acoustic package. The front end cover shield 20 and the main shield 10 do not affect each other during assembly, which facilitates the workers' operation and improves the assembly efficiency of the motor acoustic package.

[0015] Preferably, the main shroud 10, front cover shroud 20, and rear cover shroud 30 are independent of each other. When assembling the acoustic package, workers only need to wrap the main shroud around the motor body first, then install the front cover shroud 20 and rear cover shroud 30 separately, making assembly more convenient. Each of the main shroud 10, front cover shroud 20, and rear cover shroud 30 is equipped with holes corresponding to the motor's vents or to allow for clearance of suspension components, ensuring that the acoustic package conforms to the motor surface.

[0016] To facilitate assembly of the main shield 10, two flexible connectors 11 are provided on the main shield 10, dividing it into a first shield 101, a second shield 102, and a third shield 103, which are connected in sequence. The second shield 102, located in the middle of the main shield 10, abuts against the top surface of the motor to be assembled in its installation position. In the above scheme, when the motor is installed on the vehicle body, the second shield 102 is located between the motor and the vehicle chassis. Bends are made at the flexible connectors 11 between the first and second shields 101, and between the second and third shields 102, 103, to more easily wrap around and abut against the motor body.

[0017] More specifically, the connecting unit 40 is a Velcro fastener, comprising a Velcro thorn surface 41 provided on the main shield 10 and a Velcro loop surface 42 provided on each of the front and rear cover shields 20 and 30. The Velcro thorn surface 41 is connected to the main shield 10 via studs, while the Velcro loop surface 42 is connected to each of the front and rear cover shields 20 and 30 via studs. Velcro is thin, eliminating the need for overlap between the two shield surfaces, making assembly very convenient.

[0018] To facilitate installation of the motor terminal box and controller, a movable flap 12 is provided on the edge of the second protective cover 102 near the connection with the front end cover 20. This flap 12 is flexibly connected to the second protective cover 102. When installing the motor terminal box and controller, the flap 12 is folded open at the flexible connection between the flap 12 and the second protective cover 102, revealing the mounting locations for the motor terminal box and controller. A connecting unit 40 is provided on the edge of the flap 12, away from the flexible connection, for connecting to the upper edge of the front end cover 20.

[0019] More specifically, the flexible connector 11 is integrally formed with the first, second, and third shields 101, 102, and 103, and is made of the same material. The thickness of the flexible connector 11 is less than half the thickness of the first, second, and third shields 101, 102, and 103. The main shield 10, front cover shield 20, and rear cover shield 30 all comprise a hard outer layer and a soft inner layer. The soft inner layer utilizes sound-absorbing cotton, while the hard outer layer is composed of EVA and non-woven fabric. The hard outer layer provides sound insulation, while the soft inner layer absorbs sound and also buffers motor vibration.

Claims

1. A motor acoustic package, characterized in that: The invention comprises a main shield (10) for wrapping the peripheral surface of the motor body, and a front cover shield (20) and a rear cover shield (30) for respectively covering the outer surfaces of the front and rear end covers of the motor. The inner sides of the three are respectively in contact with the body surface of the motor to be assembled. The main shield (10) and the front cover shield (20) are independent of each other. The main shield (10) and the front cover shield (20) and the main shield (10) and the rear end cover shield (30) are detachably connected via a connecting unit (40). The front cover shield (20) is provided with a motor shaft avoidance hole (21). The main shield (10) is provided with a soft connection portion (11) arranged parallel to the axis of the motor shaft.

2. The motor acoustic package according to claim 1, characterized in that: The main shield (10), the front end cover shield (20) and the rear end cover shield (30) are independent of each other.

3. The motor acoustic package according to claim 1, characterized in that: Two flexible connection parts (11) are provided on the main shield (10), dividing the main shield (10) into a first shield (101), a second shield (102) and a third shield (103) connected in sequence, wherein the second shield (102) located in the middle section of the main shield (10) is in contact with the top surface of the motor to be assembled in the installation position.

4. The motor acoustic package according to claim 1, characterized in that: The connecting unit (40) is a Velcro fastener, comprising a Velcro thorn surface (41) provided on the main shield (10) and Velcro fur surfaces (42) respectively provided on the front end cover shield (20) and the rear end cover shield (30).

5. The motor acoustic package according to claim 4, characterized in that: The velcro thorn surface (41) is connected to the main shield (10) through the coding nails, and the velcro fur surface (42) is connected to the front cover shield (20) and the rear cover shield (30) through the coding nails.

6. The motor acoustic package according to claim 3, characterized in that: A movable flip cover (12) is provided at the edge of the second shield (102) close to the front end cover shield (20), and the movable flip cover (12) is softly connected to the second shield (102).

7. The motor acoustic package according to claim 3, characterized in that: The soft connection portion (11) is integrally formed with the first protective cover (101), the second protective cover (102), and the third protective cover (103) and is made of the same material. The thickness of the soft connection portion (11) is less than 1 / 2 of the thickness of the first protective cover (101), the second protective cover (102), or the third protective cover (103).

8. The motor acoustic package according to claim 1, characterized in that: The main shield (10), the front cover shield (20) and the rear cover shield (30) all comprise a hard outer layer and a soft inner layer, wherein the soft inner layer is made of sound-absorbing cotton and the hard outer layer is made of EVA and non-woven fabric.

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