Automobile cooling fan impeller structure with noise reduction function

Abstract

The utility model relates to the technical field of automobile cooling fans, in particular to an automobile cooling fan impeller structure with a noise reduction function, which comprises a shell, a front net and a rear net are symmetrically arranged on the front side and the rear side of the shell, a bearing is fixedly connected to the inner side of the rear net, and a horizontally arranged output shaft is fixedly connected to the inner side of the bearing. A limiting rod penetrating through the output shaft is connected to the outer side of the output shaft in a sliding mode, a reset spring is arranged on the outer side of the limiting rod, a baffle is fixedly connected to the end, away from the output shaft, of the limiting rod, a first positioning plate fixedly connected to the outer side of the output shaft is arranged on one side of the limiting rod, and a clamping groove is formed in one end of the output shaft. Through the arrangement of the front net, the rear net, the bearing, the output shaft, the limiting rod, the reset spring, the baffle, the first positioning plate, the clamping groove, the clamping block, the round hole, the second positioning plate, the fan, the positioning groove and the positioning rod, the fan is more convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile cooling fans, in particular to an automobile cooling fan impeller structure with a noise reduction function. Background Art

[0002] The core function of the car cooling fan impeller is to help the engine and coolant and other heat sources dissipate heat to ensure that the engine will not malfunction due to overheating. In order to maintain the engine at a suitable operating temperature and meet its performance, durability and emission requirements, the engine cooling system plays a vital role, and the cooling fan is one of the key components in this system. The working principle of the cooling fan is to reduce the temperature of the engine by promoting air flow.

[0003] Although the existing cooling fans are widely used, they still have some defects. For example, when the cooling fan impeller rotates, friction and collision will occur between the components inside the cooling fan, which will inevitably make some noise, affecting the driver. The existing cooling fan impeller has no noise reduction function, and the existing fan impeller is usually fixed by bolts, and other tools are needed to install or remove the fan, which is more troublesome. Therefore, in view of the above problems, an automobile cooling fan impeller structure with noise reduction function is proposed. Summary of the invention

[0004] The utility model aims to provide an automobile cooling fan impeller structure with a noise reduction function to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The fan impeller structure of an automobile heat dissipation fan with a noise reduction function comprises a shell, a front net and a rear net are symmetrically arranged on the front and rear sides of the shell, a bearing is fixedly connected to the inner side of the rear net, a horizontally arranged output shaft is fixedly connected to the inner side of the bearing, a limit rod penetrating the output shaft is slidably connected to the outer side of the output shaft, a return spring is arranged on the outer side of the limit rod, a baffle is fixedly connected to the end of the limit rod away from the output shaft, a first positioning plate fixedly connected to the outer side of the output shaft is arranged on one side of the limit rod, a clamping groove is arranged at one end of the output shaft, a clamping block is clamped and connected to the inner side of the clamping groove, a circular hole penetrating the clamping block and vertically aligned with the limit rod is arranged on one side of the clamping block, a second positioning plate is fixedly connected to the end of the clamping block away from the output shaft, a fan located on the outer side of the output shaft is arranged between the first positioning plate and the second positioning plate, a positioning groove is arranged on the side of the fan close to the second positioning plate, a positioning rod is arranged on the inner side of the positioning groove, and a noise reduction component is arranged on the inner side of the shell.

[0007] Preferably, the noise reduction component includes a sound-absorbing tube fixedly connected to the inner side of the shell, the inner side of the sound-absorbing tube is provided with sound-absorbing cotton, and the outer side of the sound-absorbing tube is provided with a through hole penetrating the sound-absorbing tube.

[0008] Preferably, there are several noise reduction components, which are evenly distributed on the inner side of the shell, and there are several through holes, which are distributed in an array on the outer side of the sound absorbing tube.

[0009] Preferably, one end of the return spring is fixedly connected to the outer side of the output shaft, and one end of the return spring away from the output shaft is fixedly connected to the baffle.

[0010] Preferably, the first positioning plate and the second positioning plate are of the same shape and size, the inner diameter of the circular hole is larger than the outer diameter of the limiting rod, and the end of the positioning rod away from the output shaft is fixedly connected to the second positioning plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the front net, rear net, bearing, output shaft, limit rod, return spring, baffle plate, first positioning plate, engaging groove, engaging block, circular hole, second positioning plate, fan, positioning groove and positioning rod are provided, so that the installation and disassembly of the fan are more convenient. When the fan needs to be installed, the baffle plate is pulled, and the baffle plate drives the limit rod to slide on the inner side of the output shaft. At this time, the return spring is stretched under force, and then the fan is sleeved on the outer side of the output shaft until the fan is tightly fitted with the first positioning plate. Next, the second positioning plate is picked up, and the positioning rod is inserted into the inner side of the positioning groove, and the engaging block is inserted into the inner side of the engaging groove. The baffle plate is released, and the return spring returns and drives the limit rod to slide on the inner side of the output shaft until the limit rod is inserted into the inner side of the circular hole. The installation of the fan is completed. When the fan needs to be disassembled, the baffle plate is pulled, and the baffle plate drives the limit rod to slide on the inner side of the output shaft, so that the limit rod is disengaged from the circular hole. Then the second positioning plate is pulled to disengage the positioning rod from the positioning groove, and the engaging block is disengaged from the engaging groove. Finally, the fan can be removed.

[0013] 2. In the utility model, the noise generated during the operation of the fan can be absorbed by the noise reduction component, sound-absorbing tube, sound-absorbing cotton and through hole. When the fan is used, the front net and the rear net are installed on the front and rear sides of the shell, and then the output shaft on the inner side of the bearing is externally connected to the motor, and the shell is fixed. Then the equipment is powered on, the motor is started, and the output end of the motor drives the output shaft to rotate. At this time, the rotation of the fan will generate noise, and the noise can enter the inside of the sound-absorbing cotton through the through hole on the outside of the sound-absorbing tube. Since the sound-absorbing cotton has a high porosity, the pores can make the sound waves continuously reflect and dissipate heat on the inside of the sound-absorbing cotton, thereby consuming the energy of the sound waves and achieving a sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall disassembled structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the fan installation structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the noise reduction component of the utility model.

[0018] In the figure: 1. casing; 2. front net; 3. rear net; 4. bearing; 5. output shaft; 6. limit rod; 7. return spring; 8. baffle; 9. first positioning plate; 10. snap-fit ​​groove; 11. snap-fit ​​block; 12. round hole; 13. second positioning plate; 14. fan; 15. positioning groove; 16. positioning rod; 17. noise reduction component; 1701. sound-absorbing tube; 1702. sound-absorbing cotton; 1703. through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A car cooling fan impeller structure with a noise reduction function comprises a shell 1, a front net 2 and a rear net 3 are symmetrically arranged on the front and rear sides of the shell 1, a bearing 4 is fixedly connected to the inner side of the rear net 3, a horizontally arranged output shaft 5 is fixedly connected to the inner side of the bearing 4, a limit rod 6 penetrating the output shaft 5 is slidably connected to the outer side of the output shaft 5, a return spring 7 is arranged on the outer side of the limit rod 6, a baffle 8 is fixedly connected to the end of the limit rod 6 away from the output shaft 5, a first positioning plate 9 is fixedly connected to the outer side of the output shaft 5, and the output shaft 5 is provided with a first positioning plate 9 fixedly connected to the outer side of the output shaft 5. A snap-fitting groove 10 is provided at the end, and a snap-fitting block 11 is snap-fitted to the inner side of the snap-fitting groove 10. A round hole 12 is provided on one side of the snap-fitting block 11 which penetrates the snap-fitting block 11 and is vertically aligned with the limiting rod 6. A second positioning plate 13 is fixedly connected to the end of the snap-fitting block 11 away from the output shaft 5. A fan 14 located on the outer side of the output shaft 5 is provided between the first positioning plate 9 and the second positioning plate 13. A positioning groove 15 is provided on the side of the fan 14 close to the second positioning plate 13. A positioning rod 16 is provided on the inner side of the positioning groove 15. A noise reduction component 17 is provided on the inner side of the outer casing 1.

[0024] The noise reduction component 17 includes a sound-absorbing tube 1701 fixedly connected to the inner side of the shell 1, a sound-absorbing cotton 1702 is arranged on the inner side of the sound-absorbing tube 1701, and a through hole 1703 penetrating the sound-absorbing tube 1701 is arranged on the outer side of the sound-absorbing tube 1701. The noise reduction component 17 enables the device to have a noise reduction function. The number of noise reduction components 17 is several, and the noise reduction components 17 are evenly distributed on the inner side of the shell 1. The number of through holes 1703 is several, and the through holes 1703 are arranged in an array on the outer side of the sound-absorbing tube 1701. During the operation of the device The noise can enter the inner side of the sound-absorbing cotton 1702 through the through hole 1703 on the outside of the sound-absorbing tube 1701 and be absorbed by it. One end of the reset spring 7 is fixedly connected to the outside of the output shaft 5, and the end of the reset spring 7 away from the output shaft 5 is fixedly connected to the baffle 8. The reset spring 7 makes the installation and disassembly of the fan 14 more convenient. The first positioning plate 9 and the second positioning plate 13 are the same in shape and size. The inner diameter of the circular hole 12 is larger than the outer diameter of the limit rod 6. The end of the positioning rod 16 away from the output shaft 5 is fixedly connected to the second positioning plate 13.

[0025] Working process: when the fan 14 needs to be installed, pull the baffle 8, and the baffle 8 drives the limit rod 6 to slide on the inner side of the output shaft 5. At this time, the return spring 7 is stretched under force, and then the fan 14 is sleeved on the outer side of the output shaft 5 until the fan 14 is tightly fitted with the first positioning plate 9. Next, pick up the second positioning plate 13, insert the positioning rod 16 into the inner side of the positioning groove 15, insert the locking block 11 into the inner side of the locking groove 10, loosen the baffle 8, and the return spring 7 resets and drives the limit rod 6 to slide on the inner side of the output shaft 5 until the limit rod 6 is inserted into the inner side of the circular hole 12. The installation of the fan 14 is completed. When the fan 14 needs to be disassembled, pull the baffle 8, and the baffle 8 drives the limit rod 6 to slide on the inner side of the output shaft 5, so that the limit rod 6 is separated from the circular hole 12, and then pull the second positioning plate 13. The positioning plate 13 disengages the positioning rod 16 from the positioning slot 15, and the locking block 11 disengages the locking slot 10. Finally, the fan 14 can be removed. When using the fan 14, the front net 2 and the rear net 3 are installed on the front and rear sides of the shell 1, and then the output shaft 5 inside the bearing 4 is externally connected to the motor, and the shell 1 is fixed. Then the equipment is powered on, the motor is started, and the output end of the motor drives the output shaft 5 to rotate. At this time, the rotation of the fan 14 will generate noise, and the noise can enter the inside of the sound-absorbing cotton 1702 through the through hole 1703 on the outside of the sound-absorbing tube 1701. Since the sound-absorbing cotton 1702 has a high porosity, the pores can make the sound waves continuously reflect and dissipate heat on the inside of the sound-absorbing cotton 1702, thereby consuming the energy of the sound waves, so that the noise reduction component 17 can achieve the sound absorption effect.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile cooling fan impeller structure with noise reduction function, comprising a housing (1), characterized in that: The housing (1) is symmetrically provided with a front net (2) and a rear net (3) on both sides thereof; a bearing (4) is fixedly connected to the inner side of the rear net (3); a horizontally arranged output shaft (5) is fixedly connected to the inner side of the bearing (4); a limit rod (6) penetrating the output shaft (5) is slidably connected to the outer side of the output shaft (5); a return spring (7) is provided on the outer side of the limit rod (6); a baffle (8) is fixedly connected to one end of the limit rod (6) away from the output shaft (5); a first positioning plate (9) fixedly connected to the outer side of the output shaft (5) is provided on one side of the limit rod (6); a clamping groove (10) is provided at one end of the output shaft (5); the clamping groove (10) is provided at one end of the output shaft (5); A locking block (11) is locked and connected to the inner side of the locking groove (10); a circular hole (12) penetrating the locking block (11) and vertically aligned with the limiting rod (6) is provided on one side of the locking block (11); a second positioning plate (13) is fixedly connected to the end of the locking block (11) away from the output shaft (5); a fan (14) located outside the output shaft (5) is provided between the first positioning plate (9) and the second positioning plate (13); a positioning groove (15) is provided on the side of the fan (14) close to the second positioning plate (13); a positioning rod (16) is provided on the inner side of the positioning groove (15); and a noise reduction component (17) is provided on the inner side of the housing (1).

2. The automobile cooling fan impeller structure with noise reduction function according to claim 1, characterized in that: The noise reduction component (17) comprises a sound absorbing tube (1701) fixedly connected to the inner side of the housing (1), the inner side of the sound absorbing tube (1701) is provided with sound absorbing cotton (1702), and the outer side of the sound absorbing tube (1701) is provided with a through hole (1703) penetrating the sound absorbing tube (1701).

3. The automobile cooling fan impeller structure with noise reduction function according to claim 2, characterized in that: The number of the noise reduction components (17) is several, and the noise reduction components (17) are evenly distributed on the inner side of the housing (1); the number of the through holes (1703) is several, and the through holes (1703) are distributed in an array on the outer side of the sound absorbing tube (1701).

4. The automobile cooling fan impeller structure with noise reduction function according to claim 1, characterized in that: One end of the return spring (7) is fixedly connected to the outer side of the output shaft (5), and one end of the return spring (7) away from the output shaft (5) is fixedly connected to the baffle (8).

5. The automobile cooling fan impeller structure with noise reduction function according to claim 1, characterized in that: The first positioning plate (9) and the second positioning plate (13) are of the same shape and size, the inner diameter of the circular hole (12) is larger than the outer diameter of the limiting rod (6), and the end of the positioning rod (16) away from the output shaft (5) is fixedly connected to the second positioning plate (13).

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