Noise reduction and shock absorption type blower motor for automobile

Abstract

The invention discloses a noise reduction and shock absorption type air blowing motor for an automobile, and relates to the field of automobile motors, the noise reduction and shock absorption type air blowing motor comprises a noise reduction shell and a motor main body, the noise reduction shell is arranged on the outer side of the motor main body, the right side of the noise reduction shell is of an opening structure design and is used for placing the motor main body, and a first shock absorption and sound insulation plate is arranged at the left end of the noise reduction shell; a second damping and sound insulation plate is arranged at the right end of the noise reduction shell, a mounting cover is fixed to the right side of the second damping and sound insulation plate, and a positioning mechanism is arranged in the noise reduction shell and used for positioning the placement position of the motor body in the noise reduction shell. According to the noise reduction and shock absorption type blower motor for the automobile, operation noise of the motor body is absorbed and isolated through the noise reduction shell, the noise reduction shell and the motor body are detachably connected, follow-up overhaul of the motor body is not affected, a positioning plate is arranged in the noise reduction shell, installation positioning is provided for the motor body, meanwhile, the positioning plate can move, and the noise reduction effect is good. And vibration absorption is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile motors, in particular to a noise-reducing and vibration-absorbing automobile blower motor. Background Art

[0002] In the automobile air conditioning system, the air conditioning air is blown out by the air conditioning blower motor. The blower motor is composed of a motor, a motor cover, an impeller and other structures. When the blower motor is running, its operation will generate vibration and other noise.

[0003] Prior art 1 (application number CN202322786344.7, Chinese patent published on July 19, 2024) A high-stability dual-impeller automobile air-conditioning blower motor, comprising a shell and a motor body; a first through slot is opened on both sides of the shell, the output shaft of the motor body passes through the first through slot and extends outward, a mounting plate is bolted to the bottom of the motor body, and a buffer mechanism is arranged between the bottom of the mounting plate and the bottom of the inner cavity of the shell; the buffer mechanism comprises a first slide slot, a first slider, a first buffer spring, a rotating rod, a second slide slot, a second slider and a second buffer spring, and the first slide slot is opened at the bottom of the mounting plate; through the structural design of the first slide slot, the first slider, the first buffer spring, the rotating rod, the second slide slot, the second slider and the second buffer spring, the function of buffering and reducing vibration of the motor body is realized, the vibration of the motor body is reduced, and the noise generated by the vibration is reduced; Prior art 2 (application number C N202022595011.2, Chinese patent published on August 25, 2021) An automobile air-conditioning blower motor comprises a motor cover, the inner surface of the motor cover is plugged with a motor, the inner surface of the motor cover is provided with an inner ring platform, an annular protrusion is provided at the middle end housing of the motor, and the annular protrusion is fixed to the surface of the inner ring platform by screws, a first sound insulation ring block is provided on the inner surface of the lower end of the motor cover, a second sound insulation ring block is plugged with the inner surface of the upper end of the motor cover, a ring seat is fixed at the upper end of the second sound insulation ring block, a clamping seat is provided at the lower end of the ring seat to clamp and fix the second sound insulation ring block, a ring sheet is connected to the inner surface of the lower end of the motor cover through a spring, and the ring sheet squeezes the lower surface of the motor upward, and the sound insulation ring block is provided on the inner outer layer of the motor cover to wrap the whole motor, so as to achieve good sound insulation, and the motor is fixed at the middle end, and the bottom is supported by a spring and can be arranged overhead, so as to achieve good vibration reduction during rotation operation.

[0004] Although the current automobile blower motor can reduce vibration and noise by installing noise reduction materials on the outside, the external coating of the motor will affect the heat dissipation of the motor, and the subsequent disassembly and maintenance of the motor is also relatively cumbersome. The vibration generated by the motor during operation is also easily transmitted outward, which can easily affect the installation stability of the motor. Summary of the invention

[0005] The object of the present invention is to provide a noise-reducing and vibration-absorbing automobile blower motor to solve the problem raised in the above background technology that although the current automobile blower motor can reduce vibration and noise of the motor by setting noise-reducing materials on the outside, the coating on the outside of the motor will affect the heat dissipation of the motor, and the subsequent disassembly and maintenance of the motor is also relatively cumbersome.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a noise reduction and shock absorption type automobile blower motor, comprising a noise reduction shell and a motor body, wherein the noise reduction shell is arranged on the outside of the motor body, and the right side of the noise reduction shell is designed in an open structure for placing the motor body, and a first shock absorption sound insulation board is arranged at the left end of the noise reduction shell, and a second shock absorption sound insulation board is arranged at the right end of the noise reduction shell, and a mounting cover is fixed to the right side of the second shock absorption sound insulation board, and a positioning mechanism is arranged inside the noise reduction shell to position the motor body in the noise reduction shell, and an elastic bonding pad is arranged inside the noise reduction shell, and the elastic bonding pad and the noise reduction shell are surrounded by each other and filled with coolant, and a heat sink is fixed on the outer surface of the noise reduction shell to dissipate the heat absorbed by the coolant, and a liquid extraction control mechanism is arranged on the outside of the noise reduction shell to extract the liquid in the elastic bonding pad so that the elastic bonding pad is released from the bonding with the motor body.

[0007] To further optimize the technical solution, the positioning mechanism includes a positioning plate, a connecting groove, a fixing seat and a first spring; The positioning plate is symmetrically arranged up and down about the center of the noise reduction housing, and the right end of the positioning plate is designed to be inclined; A connecting groove is provided on the surface of the motor body, and a left-right sliding structure is formed between the connecting groove and the positioning plate; A fixing seat is fixed on the inner wall of the noise reduction housing, and an up-and-down sliding structure is formed between the positioning plate and the fixing seat; The first spring is arranged inside the fixing seat to provide thrust for the positioning plate.

[0008] To further optimize the technical solution, a detachable connection is formed between the mounting cover and the noise reduction shell, and a limiting mechanism is provided on the outer side of the mounting cover to limit the mounting cover to the right end of the noise reduction shell.

[0009] To further optimize the technical solution, a sealing gasket is fixed on the left side of the mounting cover, and a guide column is fixed on the left side of the mounting cover, and the guide column is inserted into and between the noise reduction shell to form a left-right sliding structure.

[0010] Further optimizing the technical solution, the limiting mechanism includes a mounting seat, an extrusion block, a second spring, a through slot, a movable block and a driving mechanism; A mounting seat is arranged on the right side of the mounting cover, and the mounting seat is connected to the noise reduction housing; The extrusion block is arranged inside the mounting seat and forms a sliding connection between the mounting seat, and the left side of the extrusion block is designed to be inclined; A second spring is arranged at the outer end of the extrusion block to provide an outward pulling force for the extrusion block; A through slot is provided inside the extrusion block; A movable block is arranged inside the through slot, and the movable block presses the extrusion block downward through the through slot; The driving mechanism is connected with the movable block to control the movement of the movable block.

[0011] To further optimize the technical solution, the driving mechanism includes a control rod, an auxiliary block and a third spring; A control rod, fixed to the left end of the movable block; The auxiliary block is fixed on the outer surface of the noise reduction shell, and the control rod passes through the auxiliary block and the auxiliary block forms a left-right sliding structure; The third spring is arranged on the right side of the auxiliary block to provide a rightward thrust for the movable block.

[0012] To further optimize the technical solution, the liquid pumping control mechanism includes a liquid storage chamber, a piston, a control ring and a communication mechanism; A liquid storage chamber is arranged on the left side of the noise reduction housing; The piston is arranged inside the liquid storage chamber and between the liquid storage chambers to form a left-right sliding structure; A control ring is arranged on the left side of the liquid storage chamber, and a connecting block is fixed on the right side of the control ring, the connecting block is connected to the piston, and the right side of the control ring is fixedly connected to the control rod; The communication mechanism is arranged on the outside of the liquid storage chamber to connect the liquid storage chamber and the enclosed space inside the elastic fitting pad.

[0013] To further optimize the technical solution, the communication mechanism includes a delivery pipe, a first communication port and a second communication port; A delivery pipe is arranged outside the liquid storage chamber; A first communication port is provided on the surface of the noise reduction housing, and the first communication port and the delivery pipe are connected to each other; The second communication port is arranged on the surface of the liquid storage chamber, and the second communication port and the delivery pipe are communicated with each other.

[0014] To further optimize the technical solution, a locking mechanism is provided on the inner side of the control ring to limit the control ring after being pulled to the left.

[0015] Further optimizing the technical solution, the locking mechanism includes a locking groove, a support block, a locking block and a fourth spring; A locking groove is provided on the inner side of the control ring; A support block, fixed to the left side of the noise reduction housing; The locking block is arranged inside the supporting block and between the supporting blocks to form an up-and-down sliding structure, and the right side of the locking block is designed in an inclined structure; The fourth spring is arranged below the locking block to provide an upward thrust for the locking block.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The running noise of the motor body is absorbed and isolated by the noise reduction housing, and the noise reduction housing and the motor body are detachably connected, which does not affect the subsequent maintenance of the motor body. A positioning plate is provided in the noise reduction housing to provide installation positioning for the motor body, and the positioning plate is movable to facilitate vibration absorption.

[0017] (2) The coolant set in the elastic bonding pad can make the elastic bonding pad fit with the surface of the motor body under pressure, forming a coating on the outside of the motor body, which can absorb the noise and vibration of the motor, and also absorb and transfer the heat, and dissipate the heat in cooperation with the heat sink, so that the motor maintains a good heat dissipation effect.

[0018] (3) The motor body is installed in the noise reduction housing through the installation cover. The installation cover and the noise reduction housing are detachable. After the installation cover is removed, the motor body can be disassembled to facilitate maintenance.

[0019] (4) The coolant in the elastic bonding pad can be extracted by moving the control ring, thereby releasing the elastic bonding pad from the motor body, making it easier to install and remove the motor body. After the motor body is installed, the coolant can be squeezed in to allow the elastic bonding pad to effectively fit the motor body.

[0020] (5) The movable block can be synchronously controlled to move by the movement of the control ring, so that the extrusion block can automatically rise to release the obstruction of the installation cover, so that the installation cover can be removed, thereby improving the overall convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the side structure of the noise reduction housing of the present invention; Figure 4 This is a schematic diagram of the side section structure of the noise reduction housing of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the mounting cover of the present invention; Figure 6 It is a schematic diagram of the main cross-sectional structure of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the control ring of the present invention; Figure 8 For the present invention Figure 6 The enlarged structural diagram at a in the middle; Fig. 9 This is a schematic diagram of the main cross-sectional structure of the mounting seat of the present invention; Fig.10 It is a schematic diagram of the connection structure between the delivery pipe and the noise reduction shell of the present invention.

[0022] In the figure: 1. noise reduction shell; 2. motor body; 3. first shock-absorbing sound insulation board; 4. second shock-absorbing sound insulation board; 5. mounting cover; 6. guide column; 7. sealing gasket; 8. positioning plate; 9. connecting groove; 10. fixing seat; 11. first spring; 12. elastic fitting pad; 13. heat sink; 14. delivery pipe; 15. first connecting port; 16. second connecting port; 17. liquid storage chamber; 18. piston; 19. control ring; 1901. connecting block; 20. mounting seat; 21. extrusion block; 22. second spring; 23. through groove; 24. movable block; 25. control rod; 26. auxiliary block; 27. third spring; 28. locking groove; 29. ​​support block; 30. locking block; 31. fourth spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 10 , the present invention provides the following technical solution: a noise reduction and vibration reduction automobile blower motor, comprising a noise reduction housing 1 and a motor body 2, wherein the noise reduction housing 1 is arranged on the outside of the motor body 2; Embodiment 1: The present invention provides the following technical solution, which discloses that the right side of the noise reduction shell 1 is designed with an open structure for placing the motor body 2, and a first shock-absorbing sound insulation board 3 is arranged at the left end of the noise reduction shell 1, and a second shock-absorbing sound insulation board 4 is arranged at the right end of the noise reduction shell 1, and a mounting cover 5 is fixed to the right side of the second shock-absorbing sound insulation board 4, and a positioning mechanism is arranged inside the noise reduction shell 1 to position the motor body 2 in the noise reduction shell 1, and an elastic bonding pad 12 is arranged inside the noise reduction shell 1, and the elastic bonding pad 12 and the noise reduction shell 1 are surrounded by each other and filled with coolant, and a heat sink 13 is fixed on the outer surface of the noise reduction shell 1 to dissipate the heat absorbed by the coolant, and a liquid extraction control mechanism is arranged on the outer side of the noise reduction shell 1 to extract the liquid in the elastic bonding pad 12 so that the elastic bonding pad 12 is released from the bonding with the motor body 2.

[0025] The motor body 2 is installed in the noise reduction shell 1 for use. The noise reduction shell 1 absorbs the operating noise and vibration of the motor body 2, thereby reducing the noise dissipated to the outside. The elastic bonding pad 12 is fitted with the motor body 2 to improve the installation stability of the motor body 2. The internal coolant can also absorb the vibration. At the same time, the coolant can absorb and conduct the heat of the motor body 2, and dissipate it outward through the heat sink 13, so that the device can maintain a good heat dissipation effect.

[0026] Embodiment 2: On the basis of embodiment 1, a positioning mechanism is disclosed, including a positioning plate 8, a connecting groove 9, a fixing seat 10 and a first spring 11. The positioning plate 8 is symmetrically arranged about the center of the noise reduction shell 1, and the right end of the positioning plate 8 is designed with an inclined structure. The connecting groove 9 is opened on the surface of the motor body 2, and a left-right sliding structure is formed between the connecting groove 9 and the positioning plate 8. The fixing seat 10 is fixed to the inner wall of the noise reduction shell 1, and an up-and-down sliding structure is formed between the positioning plate 8 and the fixing seat 10. The first spring 11 is arranged inside the fixing seat 10 to provide thrust for the positioning plate 8. A detachable connection is formed between the mounting cover 5 and the noise reduction shell 1. A limiting mechanism is arranged on the outer side of the mounting cover 5 to limit the mounting cover 5 to the right end of the noise reduction shell 1. A sealing gasket 7 is fixed on the left side of the mounting cover 5, and a guide column 6 is fixed on the left side of the mounting cover 5. The guide column 6 is inserted into the noise reduction shell 1 and between the noise reduction shell 1 to form a left-and-right sliding structure.

[0027] After opening the installation cover 5, the motor body 2 can be inserted into the noise reduction housing 1 to connect the positioning plate 8 and the connecting groove 9. The positioning plate 8 inclined at the right end can be moved under pressure to connect with the connecting groove 9. At the same time, a first spring 11 is provided at the end of the positioning plate 8, which can also partially absorb the vibration and improve its overall shock absorption effect.

[0028] Embodiment 3: On the basis of embodiment 1, a limiting mechanism is disclosed, including a mounting seat 20, an extrusion block 21, a second spring 22, a through slot 23, a movable block 24 and a driving mechanism. The mounting seat 20 is arranged on the right side of the mounting cover 5, and the mounting seat 20 is connected to the noise reduction housing 1. The extrusion block 21 is arranged inside the mounting seat 20 and forms a sliding connection between the mounting seat 20, and the left side of the extrusion block 21 is designed in an inclined structure. The second spring 22 is arranged at the outer end of the extrusion block 21 to provide an outward pulling force for the extrusion block 21. The through slot 23 is opened inside the extrusion block 21. The movable block 24 is arranged inside the through slot 23. The movable block 24 passes through the through slot 23. The squeezing block 21 is squeezed downward, and the driving mechanism is connected to the movable block 24 to control the movement of the movable block 24. The driving mechanism includes a control rod 25, an auxiliary block 26 and a third spring 27. The control rod 25 is fixed to the left end of the movable block 24, and the auxiliary block 26 is fixed to the outer surface of the noise reduction shell 1. The control rod 25 passes through the auxiliary block 26 and the auxiliary block 26 to form a left-right sliding structure. The third spring 27 is arranged on the right side of the auxiliary block 26 to provide a rightward thrust for the movable block 24. The liquid extraction control mechanism includes a liquid storage chamber 17, a piston 18, a control ring 19 and a connecting mechanism. The liquid storage chamber 17 is arranged on the left side of the noise reduction shell 1, and the piston 18 is arranged in the liquid storage chamber 17. A left-right sliding structure is formed between the interior of the liquid storage chamber 17 and the liquid storage chamber 17, the control ring 19 is arranged on the left side of the liquid storage chamber 17, and a connecting block 1901 is fixed on the right side of the control ring 19, the connecting block 1901 is connected to the piston 18, and the right side of the control ring 19 is fixedly connected to the control rod 25, the connecting mechanism is arranged on the outside of the liquid storage chamber 17 to connect the liquid storage chamber 17 and the enclosed space inside the elastic fitting pad 12 to each other, the connecting mechanism includes a delivery pipe 14, a first connecting port 15 and a second connecting port 16, the delivery pipe 14 is arranged on the outside of the liquid storage chamber 17, the first connecting port 15 is opened on the surface of the noise reduction shell 1, and the first connecting port 15 and the delivery pipe 14 are connected to each other The second communicating port 16 is provided on the surface of the liquid storage chamber 17, the second communicating port 16 and the conveying pipe 14 are connected to each other, a locking mechanism is provided on the inner side of the control ring 19 to limit the control ring 19 after being pulled to the left, the locking mechanism includes a locking groove 28, a support block 29, a locking block 30 and a fourth spring 31, the locking groove 28 is provided on the inner side of the control ring 19, the support block 29 is fixed on the left side of the noise reduction shell 1, the locking block 30 is provided inside and between the support block 29 to form an up and down sliding structure, and the right side of the locking block 30 is designed with an inclined structure, and the fourth spring 31 is provided below the locking block 30 to provide an upward thrust for the locking block 30.

[0029] When the motor body 2 needs to be disassembled, the control ring 19 can be pulled to drive the piston 18 to move, and the coolant in the noise reduction housing 1 is sucked into the liquid storage chamber 17. At the same time, the control ring 19 will pull the movable block 24 to move through the control rod 25, and release the squeezing of the through groove 23 by the movable block 24. The second spring 22 will drive the squeezing block 21 to move upward, and release the squeezing block 21 from blocking the right end of the mounting cover 5. Then the mounting cover 5 can be removed from the right side of the noise reduction housing 1 to make the motor body 2 leak out, and the motor body 2 can be pulled out of the noise reduction housing 1. After the control ring 19 is pulled to the left, the locking block 30 and the locking groove 28 are connected, and the control ring 19 can be limited to keep its own position stable.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A noise reduction and vibration reduction type automobile blower motor, comprising a noise reduction housing (1) and a motor body (2), wherein the noise reduction housing (1) is arranged outside the motor body (2); Features: The right side of the noise reduction shell (1) is designed as an open structure for placing the motor body (2), and a first shock-absorbing sound insulation board (3) is arranged at the left end of the noise reduction shell (1), and a second shock-absorbing sound insulation board (4) is arranged at the right end of the noise reduction shell (1), and a mounting cover (5) is fixed to the right side of the second shock-absorbing sound insulation board (4). A positioning mechanism is arranged inside the noise reduction shell (1) to position the motor body (2) inside the noise reduction shell (1). An elastic bonding pad (12) is arranged inside the noise reduction shell (1). The elastic bonding pad (12) and the noise reduction shell (1) are mutually enclosed and filled with coolant, and a heat sink (13) is fixed on the outer surface of the noise reduction shell (1) to dissipate the heat absorbed by the coolant. A liquid extraction control mechanism is arranged on the outer side of the noise reduction shell (1) to extract the liquid in the elastic bonding pad (12) so that the elastic bonding pad (12) is released from the bonding with the motor body (2).

2. The noise reduction and vibration reduction automobile blower motor according to claim 1, characterized in that: The positioning mechanism comprises a positioning plate (8), a connecting groove (9), a fixing seat (10) and a first spring (11); The positioning plate (8) is symmetrically arranged in the upper and lower directions with respect to the center of the noise reduction housing (1), and the right end of the positioning plate (8) is designed to be inclined; A connecting groove (9) is provided on the surface of the motor body (2), and a left-right sliding structure is formed between the connecting groove (9) and the positioning plate (8); A fixing seat (10) is fixed to the inner wall of the noise reduction housing (1), and an up-and-down sliding structure is formed between the positioning plate (8) and the fixing seat (10); A first spring (11) is arranged inside the fixing seat (10) to provide thrust for the positioning plate (8).

3. The noise reduction and vibration reduction automobile blower motor according to claim 1, characterized in that: The mounting cover (5) and the noise reduction housing (1) are detachably connected, and a limiting mechanism is provided on the outer side of the mounting cover (5) to limit the mounting cover (5) to the right end of the noise reduction housing (1).

4. The noise reduction and vibration reduction automobile blower motor according to claim 3, characterized in that: A sealing gasket (7) is fixed to the left side of the mounting cover (5), and a guide column (6) is fixed to the left side of the mounting cover (5); the guide column (6) is inserted into the noise reduction housing (1) and between the noise reduction housing (1) to form a left-right sliding structure.

5. The noise reduction and vibration reduction automobile blower motor according to claim 3, characterized in that: The limiting mechanism comprises a mounting seat (20), an extrusion block (21), a second spring (22), a through slot (23), a movable block (24) and a driving mechanism; A mounting seat (20) is arranged on the right side of the mounting cover (5), and the mounting seat (20) is connected to the noise reduction housing (1); An extrusion block (21) is arranged inside the mounting seat (20) and is slidably connected to the mounting seat (20), and the left side of the extrusion block (21) is designed to be inclined; A second spring (22), arranged at the outer end of the extrusion block (21) to provide an outward pulling force for the extrusion block (21); A through groove (23) is provided inside the extrusion block (21); A movable block (24) is disposed inside the through slot (23), and the movable block (24) presses the extrusion block (21) downward through the through slot (23); The driving mechanism is connected to the movable block (24) to control the movement of the movable block (24).

6. A noise reduction and vibration reduction automobile blower motor according to claim 5, characterized in that: The driving mechanism comprises a control rod (25), an auxiliary block (26) and a third spring (27); A control rod (25) fixed to the left end of the movable block (24); The auxiliary block (26) is fixed on the outer surface of the noise reduction housing (1), and the control rod (25) passes through the auxiliary block (26) and the auxiliary block (26) forms a left-right sliding structure; The third spring (27) is arranged on the right side of the auxiliary block (26) to provide a rightward thrust for the movable block (24).

7. A noise reduction and vibration reduction automobile blower motor according to claim 6, characterized in that: The liquid extraction control mechanism comprises a liquid storage chamber (17), a piston (18), a control ring (19) and a communication mechanism; A liquid storage chamber (17) is arranged on the left side of the noise reduction housing (1); A piston (18) is arranged inside the liquid storage chamber (17) and between the liquid storage chamber (17) to form a left-right sliding structure; A control ring (19) is arranged on the left side of the liquid storage chamber (17), and a connecting block (1901) is fixed on the right side of the control ring (19), the connecting block (1901) is connected to the piston (18), and the right side of the control ring (19) is fixedly connected to the control rod (25); The communication mechanism is arranged outside the liquid storage chamber (17) to connect the liquid storage chamber (17) and the enclosed space inside the elastic fitting pad (12) to each other.

8. The noise reduction and vibration reduction automobile blower motor according to claim 7, characterized in that: The communication mechanism comprises a delivery pipe (14), a first communication port (15) and a second communication port (16); A delivery pipe (14) is arranged outside the liquid storage chamber (17); A first communication port (15) is provided on the surface of the noise reduction housing (1), and the first communication port (15) and the delivery pipe (14) are in communication with each other; The second communication port (16) is formed on the surface of the liquid storage chamber (17), and the second communication port (16) and the delivery pipe (14) are in communication with each other.

9. The noise reduction and vibration reduction automobile blower motor according to claim 7, characterized in that: A locking mechanism is provided on the inner side of the control ring (19) to limit the position of the control ring (19) after being pulled to the left.

10. The noise reduction and vibration reduction automobile blower motor according to claim 9, characterized in that: The locking mechanism comprises a locking groove (28), a supporting block (29), a locking block (30) and a fourth spring (31); A locking groove (28) is provided on the inner side of the control ring (19); A support block (29) fixed on the left side of the noise reduction housing (1); The locking block (30) is arranged inside the supporting block (29) and between the supporting blocks (29) to form an up-and-down sliding structure, and the right side of the locking block (30) is designed to be inclined; The fourth spring (31) is arranged below the locking block (30) to provide an upward thrust for the locking block (30).

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