Automobile motor shell with bass noise reduction mechanism

Abstract

The utility model discloses an automobile motor shell with a bass noise reduction mechanism, which comprises a motor shell and a rotor set arranged in the motor shell, the motor shell comprises a first sleeve shell, a second sleeve shell, a first noise reduction structure and a second noise reduction structure, the first sleeve shell and the second sleeve shell are coaxially arranged, the rotor set is arranged in the first sleeve shell, and the second noise reduction structure is arranged in the second sleeve shell. The first noise reduction structure is arranged between the first sleeve shell and the second sleeve shell, the first noise reduction structure comprises a plurality of fixing rings and sound absorption rubber plugs fixed to the fixing rings, and the second noise reduction structure comprises a sound absorption plate and a buffering piece. By integrally combining various noise reduction structures and sound absorption materials, low-frequency noise generated during operation of the motor can be remarkably reduced, vibration of the motor during operation can be reduced, mechanical abrasion can be reduced, and therefore the service life of the motor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile motor, concretely is a kind of automobile motor casing with bass noise reduction mechanism. BACKGROUND

[0002] With the rapid development of new energy automobile industry, the comfort and environmental protection requirements of automobile motor are continuously improved. As an important factor affecting driving experience and ride comfort, noise is also paid more and more attention. In the running process of traditional automobile motor casing, electromagnetic force, mechanical friction, airflow and vibration in motor will produce noise, and the effective control of these noise sources is not considered in the design of traditional motor casing, resulting in higher noise. SUMMARY

[0003] In order to overcome the deficiencies of prior art, the utility model provides a kind of automobile motor casing with bass noise reduction mechanism, can effectively solve the problem proposed in background art.

[0004] The technical scheme adopted by the utility model to solve its technical problems is:

[0005] A kind of automobile motor casing with bass noise reduction mechanism, including motor casing and the rotor group in motor casing, the motor casing includes first shell, second shell, first noise reduction structure and second noise reduction structure, the first shell and second shell are coaxially arranged, the first noise reduction structure is arranged between first shell and second shell, the first noise reduction structure includes several fixed rings and several sound-absorbing rubber plugs, each sound-absorbing rubber plug is one-to-one corresponding fixed on each fixed ring, the fixed ring is sleeved on first shell, and the fixed ring is connected with second shell, the second noise reduction structure includes sound-absorbing board and buffer, the sound-absorbing board is arranged at one end of first shell, the sound-absorbing board is connected with second shell by buffer, the inner wall of second shell is further provided with a plurality of sound-absorbing oil chambers.

[0006] As a further description of the above technical scheme, the end of the first shell away from the sound-absorbing board is provided with a motor end cover, and the motor end cover is connected with the second shell.

[0007] As a further description of the above technical scheme, a notch is formed on the outer side of the first shell, and the notch is arranged along the axis of the first shell, wherein the sound-absorbing rubber plug is arranged in the notch.

[0008] As a further description of the above technical scheme, a plurality of mounting grooves are formed on the inner wall of the second shell, the fixed ring is embedded in the mounting groove, and a sound insulation cotton layer is further arranged between the first shell and the second shell.

[0009] As a further description of the above technical scheme, the sound-absorbing plate is close to the concave surface of the rotor group, the sound-absorbing plate is connected with the buffer, the buffer comprises a plurality of mounting sleeves and springs arranged on the mounting sleeves, and the mounting sleeves are arranged on the end of the second sleeve.

[0010] As a further description of the above technical scheme, the connecting part of the motor end cover and the second sleeve is further provided with a sealing ring, and the sealing ring is arranged on the first sleeve.

[0011] As a further description of the above technical scheme, the mounting sleeve is fixed on the sound-absorbing plate, and the end of the second sleeve is provided with a baffle for connecting the mounting sleeve.

[0012] Compared with the prior art, the automobile motor shell with the low-frequency noise reduction mechanism has the following beneficial effects:

[0013] The automobile motor shell with the low-frequency noise reduction mechanism has at least one of the following beneficial effects in use:

[0014] The double-layer structure, the first noise reduction structure arranged between the double-layer structure, and the second noise reduction structure can greatly increase the sound insulation effect, and the noise propagation is reduced through physical isolation. The fixing ring is arranged along the axis direction of the first sleeve and connected with the second sleeve. The sound-absorbing rubber plug arranged on the fixing ring can effectively absorb sound waves, reduce the reflection and propagation of sound waves in the shell. The cavity filled with sound-absorbing oil is arranged on the inner wall of the second sleeve, the sound-absorbing oil with high density and moderate viscosity can effectively absorb and attenuate sound waves, the propagation path and reflection characteristics of the sound waves can be changed, and the overall noise reduction effect is enhanced. The combination of various noise reduction structures and sound-absorbing materials can significantly reduce the low-frequency noise generated by the motor during operation, and can also reduce the vibration of the motor during operation, reduce mechanical wear, and prolong the service life of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the automobile motor shell with the low-frequency noise reduction mechanism.

[0016] Fig. 2 It is a partial side structure schematic view of the automobile motor shell with the low-frequency noise reduction mechanism.

[0017] Fig. 3 It is a partial perspective structure schematic view of the automobile motor shell with the low-frequency noise reduction mechanism.

[0018] Reference numerals in the drawings:

[0019] 1, the first shell; 101, the rotor group; 102, the motor end cover; 103, the active noise reduction module; 104, the mounting groove; 2, the second shell; 201, the sound insulation cotton layer; 202, the sealing ring; 203, the sound absorption oil chamber; 3, the first noise reduction structure; 301, the fixed ring; 302, the sound-absorbing rubber plug; 303, the baffle; 4, the second noise reduction structure; 401, the sound-absorbing board; 402, the buffer; 403, the spring; 404, the mounting sleeve shaft. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] As Figs. 1-3 shown, the utility model provides a kind of automobile motor shell with bass noise reduction mechanism, including motor shell and the rotor group 101 in motor shell, the motor shell includes first shell 1, second shell 2, first noise reduction structure 3 and second noise reduction structure 4, first shell 1 is coaxially arranged with second shell 2, first noise reduction structure 3 is arranged between first shell 1 and second shell 2, first noise reduction structure 3 includes several fixed rings 301 and sound-absorbing rubber plug 302 fixed on fixed ring 301, each sound-absorbing rubber plug 302 is fixed on each fixed ring one-to-one, fixed ring 301 is set on first shell 1, fixed ring 301 is arranged along the axis direction of first shell 1, and fixed ring 301 is connected with second shell 2, second noise reduction structure 4 includes sound-absorbing board 401 and buffer 402, sound-absorbing board 401 is arranged at one end of first shell 1, sound-absorbing board 401 is connected with second shell 2 by buffer 402, multiple sound absorption oil chambers 203 are further arranged on the inner wall of second shell 2.

[0022] The motor shell of the embodiment is composed of first shell 1 and second shell 2, and both are coaxially arranged, forming double-layer structure. And first noise reduction structure 3 is arranged between them, and second noise reduction structure 4 can greatly increase sound insulation effect, reduce the propagation of noise by physical isolation. Fixed ring 301 is arranged along the axis direction of first shell 1, and is connected with second shell 2. Sound-absorbing rubber plug 302 can effectively absorb sound wave, reduce the reflection and propagation of sound wave in the shell.

[0023] The sound absorption plate 401 is located at one end of the first shell 1, and the buffer 402 is used to connect the sound absorption plate 401 and the second shell 2. The material of the sound absorption plate 401 generally has good acoustic performance and can effectively absorb low-frequency noise, further reducing the propagation of noise. At the same time, the buffer 402 connected to the sound absorption plate 401 can better offset the impact force of the rotor set 101 to achieve shock absorption while further reducing the noise generated by structural vibration.

[0024] The chamber filled with sound absorption oil is arranged on the inner wall of the second shell 2. The oil with high density and moderate viscosity can effectively absorb and attenuate sound waves, and can enhance the overall noise reduction effect by changing the propagation path and reflection characteristics of sound waves. The above embodiment can significantly reduce low-frequency noise generated during motor operation through the combination of multi-layer structure and sound absorption material, and can also reduce vibration during motor operation, reduce mechanical wear, and prolong the service life of the motor.

[0025] Further, the first shell 1 away from the sound absorption plate 401 is provided with a motor end cover 102, and the motor end cover 102 is provided with an active noise reduction module 103. The active noise reduction module 103 includes a sound collection unit, a signal feedback unit and a control unit, wherein the motor end cover 102 is connected with the second shell 2.

[0026] The active noise reduction module 103 is used with the sound generating unit in the car. The active noise reduction module 103 monitors the noise generated during motor operation in real time through the sound collection unit and generates corresponding reverse sound waves. Through the connection with the second shell 2, the reverse sound waves can be effectively transmitted to the vicinity of the noise source, thereby canceling part of the noise and further reducing the overall noise level. The signal feedback unit can adjust the noise reduction strategy in real time according to the noise data collected by the sound collection unit. This dynamic adjustment capability makes the noise reduction effect more accurate and efficient, and can adapt to noise changes under different working conditions. Integrating the active noise reduction module 103 on the motor end cover 102 saves space and simplifies the overall design. Such a design makes the structure of the motor shell more compact, facilitating installation and maintenance.

[0027] Further, the first shell 1 is provided with a notch on the outer side, the notch is arranged along the axis of the first shell 1, wherein the sound-absorbing rubber plug 302 is arranged in the notch, and the sound-absorbing rubber plug 302 is trumpet-shaped. The trumpet-shaped sound-absorbing rubber plug 302 can more effectively diffuse sound waves, increase the contact area of sound waves with sound-absorbing materials, and thus improve the sound-absorbing effect. The trumpet-shaped design helps to better capture and absorb low-frequency noise. The sound-absorbing rubber plug 302 is arranged in the notch, which can be effectively fixed on the first shell 1, preventing loosening or falling off due to vibration during motor operation, and ensuring long-term stable noise reduction performance. The notch design makes the installation of the sound-absorbing rubber plug 302 more convenient, enabling quick and convenient replacement or maintenance, and reducing maintenance costs.

[0028] Further, the inner wall of the second shell 2 is provided with a plurality of mounting grooves 104, the fixing ring 301 is embedded in the mounting groove 104, and the first shell 1 and the second shell 2 are further provided with a sound insulation cotton layer 201. The design of the mounting groove 104 and the fixing ring 301 can effectively fix the first shell 1 and the second shell 2 together, preventing loosening or displacement due to vibration during motor operation, thereby improving the stability and safety of the overall structure. The arrangement of the sound insulation cotton layer 201 can effectively absorb and block the propagation of sound waves, reducing the degree of noise transmission to the outside through the shell.

[0029] Further, one side of the sound-absorbing plate 401 close to the rotor set 101 is concave, the sound-absorbing plate 401 is connected with the buffer 402, the buffer 402 includes a plurality of mounting sleeves 404 and springs 403 arranged on the mounting sleeves 404, and the mounting sleeves 404 are arranged through the end of the second shell 2. The concave design of the sound-absorbing plate 401 can effectively collect and guide sound waves, making them more easily absorbed when contacting sound-absorbing materials. The sound-absorbing plate 401 can effectively absorb and dampen the vibration generated by the rotor set 101 during operation through the action of the spring 403, reducing the transmission of vibration to the shell and other components, and prolonging the service life of the equipment.

[0030] Further, the motor end cover 102 is further provided with a sealing ring 202 at the connection with the second shell 2, and the sealing ring 202 is arranged on the first shell 1. The sealing ring 202 can ensure that the shell has a dustproof function, and the tight combination formed by the sealing ring 202 at the connection helps to improve the structural stability of the motor end cover 102 and the second shell 2, preventing loosening due to vibration or impact.

[0031] Further, the mounting sleeve shaft 404 is fixed on the sound absorption plate 401, and the end of the second sleeve shell 2 is provided with a baffle 303 for connecting the mounting sleeve shaft 404. The mounting sleeve shaft 404 is fixed on the sound absorption plate 401, which can ensure that the sound absorption plate 401 remains stable during operation, avoids displacement or loosening due to vibration or impact, and improves the stability of the overall structure. The baffle 303 plays a supporting role and can better control the vibration characteristics of the sound absorption plate 401, reduce resonance caused by the operation of the rotor set 101, and improve the working stability of the equipment.

[0032] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A car motor housing with a low-frequency noise reduction mechanism, comprising a motor housing and a rotor assembly disposed within the motor housing, characterized in that, The motor housing includes a first housing, a second housing, a first noise reduction structure, and a second noise reduction structure. The first housing and the second housing are coaxially arranged. The first noise reduction structure is located between the first housing and the second housing. The first noise reduction structure includes several fixing rings and several sound-absorbing rubber plugs. Each sound-absorbing rubber plug is fixed to each of the fixing rings. The fixing rings are sleeved on the first housing and connected to the second housing. The second noise reduction structure includes a sound-absorbing plate and a buffer. The sound-absorbing plate is located at one end of the first housing and is connected to the second housing through the buffer. The inner wall of the second housing is also provided with multiple sound-absorbing oil chambers.

2. The automotive motor housing with a bass noise reduction mechanism according to claim 1, characterized in that: The first housing has a motor end cover at the end away from the sound-absorbing plate, and the motor end cover is connected to the second housing.

3. The automotive motor housing with a bass noise reduction mechanism according to claim 1, characterized in that: The outer side of the first housing has a groove, which is arranged along the axis of the first housing, and the sound-absorbing rubber plug is disposed in the groove.

4. The automotive motor housing with a bass noise reduction mechanism according to claim 1, characterized in that: The fixing ring is arranged along the axis of the first shell, and the inner wall of the second shell has multiple mounting grooves. The fixing ring is embedded in the mounting grooves, and a sound insulation cotton layer is provided between the first shell and the second shell.

5. A car motor housing with a bass noise reduction mechanism according to claim 1, characterized in that: The sound-absorbing plate has a concave side near the rotor assembly. The sound-absorbing plate is connected to a buffer component. The buffer component includes several mounting shafts and springs mounted on the mounting shafts. The mounting shafts pass through the end of the second housing.

6. A car motor housing with a bass noise reduction mechanism according to claim 2, characterized in that: A sealing ring is also provided at the connection between the motor end cover and the second housing, and the sealing ring is fitted onto the first housing.

7. A car motor housing with a bass noise reduction mechanism according to claim 5, characterized in that: The mounting sleeve shaft is fixed to the sound-absorbing plate, and the end of the second housing is provided with a baffle for connecting the mounting sleeve shaft.

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