CN112186955A

CN112186955A - Motor for restraining electromagnetic noise of automobile motor and improving NVH (noise, vibration and harshness)

Info

Publication number: CN112186955A
Application number: CN202011073093.2A
Authority: CN
Inventors: 唐荣江; 潘朝远; 郑伟光; 罗海英; 鲍家定
Original assignee: Guilin University of Electronic Technology
Current assignee: Guilin University of Electronic Technology
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-01-05

Abstract

The invention discloses a motor for inhibiting electromagnetic noise of an automobile motor and improving NVH (noise, vibration and harshness), which relates to the field of automobile equipment and comprises a motor body, wherein two sides of the bottom of the motor body are respectively connected with a fixed base through suspension assemblies, bolt holes are formed in two ends of the fixed base, one end of the motor body is connected with a fan outer cover, and the end part of the fan outer cover is provided with an air pipe connector, so that the automobile motor has the beneficial effects that: the two sides of the bottom of the motor body are respectively connected with a fixed base through suspension assemblies, the fixed bases are connected and fixed on corresponding vehicle mounting supports through bolts, and a shock absorption rod assembly arranged in the suspension assemblies is used for buffering the influence of vibration generated in the driving process of an automobile on the motor body; the outer port of the air pipe connector arranged at one end of the fan outer cover is provided with a damping gasket, so that two sides of the damping gasket are tightly attached to the connected flanges, the metal elastic ring has a certain damping effect, and the damping effect is achieved when air enters the air pipe along the damping gasket.

Description

Motor for restraining electromagnetic noise of automobile motor and improving NVH (noise, vibration and harshness)

Technical Field

The invention relates to the field of automobile equipment, in particular to a motor for restraining electromagnetic noise of an automobile motor and improving NVH (noise, vibration and harshness).

Background

The research on the NVH characteristics is not only suitable for the development process of a whole new automobile product, but also suitable for the research on improvement of riding comfort of an existing automobile type, and for an automobile, the NVH problem exists everywhere, and the NVH problem can be divided into three parts, namely engine NVH, automobile body NVH and chassis NVH according to the source of the problem, and further can be further divided into aerodynamic NVH, air conditioning system NVH, road driving NVH, brake system NVH and the like.

In the research of NVH of an air conditioning system, an air conditioning motor can generate vibration when running at a high speed, the vibration can generate a large amount of noise, the working environment becomes severe, and in severe cases, the connection of components of the air conditioning motor is loosened, so that the normal operation of the motor is influenced; and the motor of traditional vehicle air conditioner air-blower assembly and ring flange direct contact, sound field and vibration field directly transmit to the air conditioning box through the ring flange, have direct amplification effect to sound, and the noise that causes is great.

Disclosure of Invention

The present invention is directed to a motor for suppressing electromagnetic noise and improving NVH of an automotive motor, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an restrain car motor electromagnetic noise and improve NVH's motor, includes motor body, motor body bottom both sides are connected with a unable adjustment base respectively through the suspension subassembly, and the bolt hole has been seted up at unable adjustment base's both ends, motor body's one end is connected with the fan dustcoat, and fan dustcoat tip is equipped with the tuber pipe interface.

Preferably, the suspension assembly comprises a crank and a damping rod assembly, the upper end of the crank is hinged to an upper hinge base welded to the bottom of the motor body, and the lower end of the crank is hinged to a lower hinge base welded to the upper surface of the fixed base.

Preferably, the articulated end that the upper end of shock attenuation pole subassembly was equipped with has articulated ear mutually with the welding of crank upper end, and the articulated end that the shock attenuation pole subassembly lower extreme was equipped with is articulated mutually with the articulated ear that fixed base upper surface welded has.

Preferably, the port of the air pipe connector is connected with a damping gasket, and the damping gasket is an annular elastic rubber body.

Preferably, one side integrated into one piece of shock attenuation gasket has the snap ring portion that the tangent plane is "T" font, and snap ring portion card establishes in the lateral wall of tuber pipe interface, and the lateral wall of shock attenuation gasket is equipped with the vacuum suction surface of indent.

Preferably, an inner ring cavity is arranged inside the damping gasket, and a metal elastic ring with an N-shaped section is arranged inside the inner ring cavity.

Preferably, the outer wall of the motor body is provided with a plurality of uniformly distributed radiating fins which are steel-aluminum composite metal strip bodies.

Preferably, the section of each radiating fin is in a V shape, and a cavity inside each radiating fin is filled with glass wool fillers.

Preferably, the two ends of a rotating shaft arranged in the motor body are respectively rotatably connected with one end of the motor body and the middle part of the fan housing, and the rotating shaft is in interference fit with the switching parts of the motor body and the fan housing and is provided with a bearing.

Preferably, a first lubricating oil channel is formed in the outer wall of the upper end of the fan outer cover, the first lubricating oil channel extends to the matching position of the fan outer cover and the bearing, and an oil inlet hole communicated with the first lubricating oil channel is formed in the bearing outer ring of the bearing matched with the fan outer cover.

And a second lubricating oil channel is formed in the outer wall of the upper end of the motor body, the second lubricating oil channel extends to the matching position of the motor body and the bearing, and an oil inlet communicated with the second lubricating oil channel is formed in the outer ring of the bearing matched with the motor body.

The invention has the technical effects and advantages that:

1. the two sides of the bottom of the motor body are respectively connected with a fixed base through suspension assemblies, the fixed bases are connected and fixed on corresponding vehicle mounting supports through bolts, and a shock absorption rod assembly arranged in the suspension assemblies is used for buffering the influence of vibration generated in the driving process of an automobile on the motor body;

2. according to the invention, the outer port of the air pipe connector arranged at one end of the fan outer cover is provided with the damping gasket, the outer side wall of the damping gasket is provided with the inward concave vacuum suction surface, the damping gasket is attached to the air pipe flange through the vacuum suction surface, the sealing performance during connection is ensured, the air leakage is good, the metal elastic ring with the cut surface in an N shape is arranged inside the damping gasket, the two sides of the damping gasket are tightly attached to the connected flanges due to the shape of the metal elastic ring and the metal elastic action of the metal elastic ring, the air tightness is enhanced, the metal elastic ring has a certain damping effect, when air enters the air pipe along the damping gasket, the damping effect is achieved, and the NVH performance is improved;

3. the bearing matched and connected with the rotating shaft can be lubricated by filling lubricating oil along the outer ports of the first lubricating oil channel and the second lubricating oil channel, so that the abrasion of the bearing is reduced, the service life of the bearing is prolonged, and otherwise, the bearing is easy to generate larger noise under the condition of excessive abrasion.

Drawings

Fig. 1 is a partial cross-sectional view 1 of a three-dimensional structure of the present invention.

Fig. 2 is a partial cross-sectional view 2 of a three-dimensional structure of the present invention.

Fig. 3 is a front half sectional view of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a cross-sectional view at B-B in fig. 3.

Fig. 6 is an enlarged view at C in fig. 5.

In the figure: 1. a motor body; 101. a fan housing; 102. an air pipe connector; 2. a suspension assembly; 3. a fixed base; 4. a shock-absorbing pad; 401. a collar portion; 402. an inner ring cavity; 403. a metal elastic ring; 404. a vacuum suction surface; 5. a crank; 501. an upper hinge base; 502. a lower hinge base; 6. a damper rod assembly; 7. a heat dissipating fin; 8. a glass wool filler; 9. a first lubricating oil passage; 901. and a second lubricating oil passage.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a motor for inhibiting electromagnetic noise of an automobile motor and improving NVH (noise, vibration and harshness) as shown in figures 1-6, which comprises a motor body 1 and is combined with figures 1 and 5, two sides of the bottom of the motor body 1 are respectively connected with a fixed base 3 through suspension assemblies 2, bolt holes are arranged at two ends of each fixed base 3 and used for connecting and fixing the fixed bases 3 on corresponding automobile mounting brackets through bolts, wherein each suspension assembly 2 comprises a crank 5 and a shock-absorbing rod assembly 6, the upper end of the crank 5 is hinged with an upper hinged seat 501 welded at the bottom of the motor body 1, the lower end of the crank 5 is hinged with a lower hinged seat 502 welded on the upper surface of the fixed base 3, the main body of the shock-absorbing rod assembly 6 is composed of a telescopic rod body which is sleeved with each other and a shock-absorbing spring arranged outside the telescopic rod body, a hinged end arranged at the upper end of the shock-, the articulated end that the 6 lower extremes of shock attenuation pole subassembly were equipped with is articulated mutually with the articulated ear that fixed base 3 upper surface welded has, and suspension subassembly 2 is used for the buffering car to go the in-process and produces the influence of vibration to motor body 1.

Referring to fig. 2, 3 and 4, one end of the motor body 1 is connected with a fan housing 101, the end of the fan housing 101 is provided with an air duct connector 102, a port of the air duct connector 102 is connected with a damping gasket 4, the damping gasket 4 is an annular elastic rubber body, one side of the damping gasket 4 is integrally formed with a snap ring part 401 with a T-shaped section, the snap ring part 401 is clamped in the side wall of the air duct connector 102 and used for fixing the snap ring part 401 at the outer port of the damping gasket 4 and can be replaced during maintenance, the outer side wall of the damping gasket 4 is provided with an inward concave vacuum suction surface 404, the damping gasket 4 is attached to an air duct flange through the vacuum suction surface 404 to ensure tightness and good air leakage during connection, an inner annular cavity 402 is arranged inside the damping gasket 4, a metal elastic ring 403 with an N-shaped section is arranged inside the inner annular cavity 402, the shape of the metal elastic ring 403 and the metal elastic effect thereof, guarantee 4 both sides of shock attenuation gasket and the flange that meets and closely laminate, reinforcing gas tightness, and metal elastic ring 403 has certain shock attenuation effect, when the air got into the trachea along shock attenuation gasket 4, played the cushioning effect, improved the NVH performance.

Combine fig. 1, fig. 5 to show, motor body 1's outer wall is equipped with a plurality of evenly distributed's radiating fin 7, radiating fin 7 is the steel aluminium composite metal strip body, improve the radiating effect of motor body 1 during operation, combine fig. 5 and fig. 6 to show, radiating fin 7's tangent plane is "V" font, and it is provided with cotton filler 8 of glass to fill in the inside cavity of radiating fin 7, cotton filler 8 of glass can absorb the noise that the inside electric circle component during operation of motor body produced, play the noise reduction effect.

Referring to fig. 1 and 3, two ends of a rotating shaft disposed inside a motor body 1 are rotatably connected to one end of the motor body 1 and the middle of a fan housing 101, respectively, bearings are disposed at the joints of the rotating shaft, the motor body 1 and the fan housing 101 in an interference fit manner, a first lubricating oil channel 9 is disposed along the outer wall of the upper end of the fan housing 101, the first lubricating oil channel 9 extends to the joint of the fan housing 101 and the bearings, an oil inlet hole communicated with the first lubricating oil channel 9 is disposed on the outer ring of the bearing of the fan housing 101, a second lubricating oil channel 901 is disposed along the outer wall of the upper end of the motor body 1, the second lubricating oil channel 901 extends to the joint of the motor body 1 and the bearings, an oil inlet hole communicated with the second lubricating oil channel 901 is disposed on the outer ring of the bearing of the motor body 1, and lubricating oil is filled along the outer end openings of the first lubricating oil channel 9 and the second lubricating, can lubricate the bearing that the countershaft cooperation is connected, reduce the wearing and tearing of bearing, prolong bearing life, otherwise the bearing easily produces great noise under excessive wearing and tearing, and first lubricating oil duct 9, second lubricating oil duct 901 outer port need seal tight stopper rubber chock plug when not filling lubricating oil, prevent that dust impurity from getting into the pollution.

The working principle of the invention is as follows: the two sides of the bottom of the motor body 1 are respectively connected with a fixed base 3 through suspension assemblies 2, the fixed bases 3 are connected and fixed on corresponding vehicle mounting supports through bolts, and a damping rod assembly 6 arranged in each suspension assembly 2 is used for buffering the influence of vibration generated in the driving process of a vehicle on the motor body 1;

according to the invention, the damping gasket 4 is arranged at the outer port of the air pipe connector 102 arranged at one end of the fan outer cover 101, the inner concave vacuum suction surface 404 is arranged on the outer side wall of the damping gasket 4, the damping gasket 4 is attached to the air pipe flange through the vacuum suction surface 404, the sealing performance during connection is ensured, the air leakage is good, the metal elastic ring 403 with the N-shaped section is arranged inside the damping gasket 4, the metal elastic ring 403 is tightly attached to the connected flange on the two sides of the damping gasket 4 due to the shape of the metal elastic ring 403 and the metal elastic action of the metal elastic ring, the air tightness is enhanced, and the metal elastic ring 403 has a certain damping effect, so that when air enters the air pipe along the damping gasket 4, the damping effect is achieved, and the NV;

according to the invention, the bearings which are connected with the rotating shaft in a matching way can be lubricated by filling lubricating oil along the outer ports of the first lubricating oil channel 9 and the second lubricating oil channel 901, so that the abrasion of the bearings is reduced, the service life of the bearings is prolonged, otherwise, the bearings are easy to generate larger noise under excessive abrasion.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an restrain automobile motor electromagnetic noise and improve NVH's motor, includes motor body (1), its characterized in that: the motor is characterized in that two sides of the bottom of the motor body (1) are respectively connected with a fixing base (3) through suspension assemblies (2), bolt holes are formed in two ends of the fixing base (3), one end of the motor body (1) is connected with a fan outer cover (101), and an air pipe connector (102) is arranged at the end part of the fan outer cover (101).

2. The motor for suppressing electromagnetic noise and improving NVH of an automobile motor according to claim 1, characterized in that: suspension subassembly (2) are including crank (5) and shock attenuation pole subassembly (6), and the upper end of crank (5) is articulated mutually with last articulated seat (501) that motor body (1) bottom welding has, and the lower extreme of crank (5) is articulated mutually with lower articulated seat (502) that fixed base (3) upper surface welding has.

3. The motor for suppressing electromagnetic noise and improving NVH of the motor for an automobile according to claim 2, characterized in that: the articulated end that the upper end of shock attenuation pole subassembly (6) was equipped with has articulated ear mutually with crank (5) upper end welding, and articulated end that shock attenuation pole subassembly (6) lower extreme was equipped with is articulated mutually with fixed base (3) upper surface welding has articulated ear mutually.

4. The motor for suppressing electromagnetic noise and improving NVH of an automobile motor according to claim 1, characterized in that: the port department of tuber pipe interface (102) is connected with shock attenuation gasket (4), and shock attenuation gasket (4) are annular elastic rubber body.

5. The motor for suppressing electromagnetic noise and improving NVH of the motor for an automobile according to claim 4, characterized in that: one side integrated into one piece of shock attenuation gasket (4) has the section of keeping off the ring portion (401) that the tangent plane is "T" font, and the card of ring portion (401) is established in the lateral wall of tuber pipe interface (102), and the lateral wall of shock attenuation gasket (4) is equipped with the vacuum suction surface (404) of indent.

6. The motor for suppressing electromagnetic noise and improving NVH of the motor for an automobile according to claim 4, characterized in that: an inner ring cavity (402) is arranged inside the shock absorption gasket (4), and a metal elastic ring (403) with an N-shaped section is arranged inside the inner ring cavity (402).

7. The motor for suppressing electromagnetic noise and improving NVH of an automobile motor according to claim 1, characterized in that: the motor is characterized in that a plurality of uniformly distributed radiating fins (7) are arranged on the outer wall of the motor body (1), and the radiating fins (7) are steel-aluminum composite metal strip bodies.

8. The motor for suppressing electromagnetic noise and improving NVH of an automobile motor according to claim 7, characterized in that: the section of each radiating fin (7) is V-shaped, and a glass wool filler (8) is filled in a cavity inside each radiating fin (7).

9. The motor for suppressing electromagnetic noise and improving NVH of an automobile motor according to claim 1, characterized in that: the motor is characterized in that two ends of a rotating shaft arranged in the motor body (1) are rotatably connected with one end of the motor body (1) and the middle of the fan housing (101) respectively, and bearings are arranged at the switching positions of the rotating shaft, the motor body (1) and the fan housing (101) in an interference fit mode.

10. The motor for suppressing electromagnetic noise and improving NVH of an automobile motor according to claim 9, characterized in that: a first lubricating oil channel (9) is formed in the outer wall of the upper end of the fan outer cover (101), the first lubricating oil channel (9) extends to the matching position of the fan outer cover (101) and the bearing, and an oil inlet communicated with the first lubricating oil channel (9) is formed in the bearing outer ring of the bearing matched with the fan outer cover (101);

a second lubricating oil channel (901) is formed in the outer wall of the upper end of the motor body (1), the second lubricating oil channel (901) extends to the matching position of the motor body (1) and the bearing, and an oil inlet communicated with the second lubricating oil channel (901) is formed in the outer ring of the bearing matched with the motor body (1).