Noise reduction structure of automobile water pump

Abstract

The utility model discloses an automobile water pump noise reduction structure, which belongs to the field of automobile water pumps and comprises a pump body and a soundproof box, the soundproof box is hollow inside, the pump body is arranged inside the soundproof box, soundproof cotton is laid on the inner wall of the soundproof box, a base is fixed on the lower portion inside the soundproof box, and a threaded rod vertically penetrates through the top of the soundproof box in a screwed mode. The bottom of the threaded rod is provided with an arc-shaped pressing plate through a bearing, the arc-shaped pressing plate is arranged over the base, the pump body is arranged between the base and the arc-shaped pressing plate, through holes are formed in the surface of the front side and the surface of one side of the soundproof box, a water inlet pipe is arranged on the front side of the pump body, a water drainage pipe is arranged on one side of the pump body, and the water pump is fixed into the soundproof box. Noise generated when the water pump works is prevented from spreading outwards through sound insulation cotton on the inner wall of the sound insulation box, the internal water pump is fixed through a base and an arc-shaped pressing plate, so that the contact area of the water pump and the sound insulation box is reduced, and the noise is further isolated.

Description

Technical Field

[0001] The utility model relates to the field of automobile water pumps, and more specifically to a noise reduction structure of an automobile water pump. Background Art

[0002] In the cylinder block of a car engine, there are multiple water channels for cooling water circulation, which are connected to the radiator (commonly known as the water tank) placed at the front of the car through water pipes, forming a large water circulation system. At the upper water outlet of the engine, there is a water pump, which is driven by a fan belt to pump out the hot water in the water channel of the engine cylinder block and pump in the cold water. When the water pump rotates at high speed, it will absorb and discharge the coolant. Due to the high-speed rotation of the blades inside the pump body and the impact force of the internal coolant flow, the water pump will generate a lot of noise when working, which in turn affects the riding experience inside the entire car. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a noise reduction structure for an automobile water pump, which can achieve noise reduction for the water pump, reduce the noise of the water pump when it is working, and improve the driving comfort of the automobile.

[0005] 2. Technical solution

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A noise reduction structure for an automobile water pump comprises a pump body and a soundproof box, wherein the interior of the soundproof box is hollow, the pump body is placed inside the soundproof box, the inner wall of the soundproof box is paved with soundproof cotton, a base is fixed at the lower part of the interior of the soundproof box, a threaded rod is vertically screwed through the top of the soundproof box, an arc-shaped pressure plate is installed at the bottom of the threaded rod through a bearing, the arc-shaped pressure plate is placed just above the base, the pump body is placed between the base and the arc-shaped pressure plate, through holes are opened on the front side and one side surface of the soundproof box, a water inlet pipe is arranged on the front side of the pump body, a drain pipe is arranged on one side of the pump body, the water inlet pipe and the drain pipe respectively pass through the two through holes, a sliding sleeve is arranged on the surface of the water inlet pipe and the drain pipe after sliding installation, and a rubber cone sleeve is arranged on the end of the sliding sleeve close to the soundproof box.

[0008] Furthermore, the upper and lower surfaces of the water inlet pipe and the drain pipe are evenly provided with limiting holes along their axes.

[0009] Furthermore, the sliding sleeve is symmetrically provided with mounting holes, a wedge block is slidably installed in the mounting hole, a side of the wedge block close to the sound insulation box is set as an inclined surface, and the bottom of the wedge block is adapted to the limiting hole.

[0010] Furthermore, a spring is arranged inside the mounting hole, one end of the spring is in contact with the end surface of the wedge block away from the limiting hole, and an annular groove is formed on the end surface of the wedge block close to the spring.

[0011] Furthermore, a movable seesaw is horizontally installed inside the mounting hole through a pin shaft, a U-shaped fork rod is provided at one end of the movable seesaw, the U-shaped fork rod is stuck in the inner side of the annular groove, and a control button is vertically slidably installed on the surface of the sliding sleeve, and the end of the control button is in contact with the upper surface of one end of the movable seesaw away from the U-shaped fork rod.

[0012] Furthermore, the surfaces of one side of the arc-shaped pressing plate and the base close to each other are arranged in an arc shape, and rubber pads are glued to the inner sides of the two arcs.

[0013] Furthermore, a connecting pulley is provided at the power input end of the pump body, and the connecting pulley is placed outside the sound insulation box.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the utility model are: the utility model provides a noise reduction structure for an automobile water pump, which fixes the water pump inside a soundproof box, leaving only the inlet and outlet pipes and the drive pulley exposed, and uses sound insulation cotton on the inner wall of the soundproof box to prevent the noise of the water pump from spreading outward during operation. The internal water pump is fixed by a base and an arc-shaped pressure plate to reduce the contact area between the water pump and the soundproof box, thereby further isolating the noise.

[0016] A conical rubber sleeve slides on the surface of the inlet and outlet pipes. By adjusting the position of the conical rubber sleeve, the through holes on the surface of the sound insulation box can be sealed to prevent the water pipes from directly contacting the sound insulation box and reduce the transmission of water pump noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the sound insulation box of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the pump body of the utility model;

[0020] Figure 4 For the utility model Figure 2 Schematic diagram of the structure of area A.

[0021] Explanation of the numbers in the figure: 1. Pump body; 2. Connecting pulley; 3. Water inlet pipe; 4. Drain pipe; 5. Sound insulation box; 6. Sound insulation cotton; 7. Through hole; 8. Limit hole; 9. Base; 10. Threaded rod; 11. Arc pressure plate; 12. Sliding sleeve; 13. Rubber cone sleeve; 14. Mounting hole; 15. Wedge block; 16. Spring; 17. Annular groove; 18. Movable rocker; 19. U-shaped fork rod; 20. Control button. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1-Figure 4 As shown, a noise reduction structure for an automobile water pump includes a pump body 1 and a soundproof box 5. The interior of the soundproof box 5 is hollow, and the pump body 1 is placed inside the soundproof box 5. The inner wall of the soundproof box 5 is paved with soundproof cotton 6 to reduce the noise propagation of the pump body 1 when it is working. A base 9 is fixed at the bottom of the soundproof box 5. A threaded rod 10 is vertically screwed through the top of the soundproof box 5. An arc-shaped pressing plate 11 is installed at the bottom of the threaded rod 10 through a bearing. The arc-shaped pressing plate 11 is placed just above the base 9. The pump body 1 is placed between the base 9 and the arc-shaped pressing plate 11, so as to effectively fix the pump body 1, reduce the contact area between the pump body 1 and the soundproof box 5, and reduce the path of noise propagation. The front side of the soundproof box 5 and a Through holes 7 are provided on the side surfaces, a water inlet pipe 3 is provided on the front side of the pump body 1, and a drain pipe 4 is provided on one side of the pump body 1. The water inlet pipe 3 and the drain pipe 4 respectively pass through the two through holes 7, which is convenient for installing water pipes through the outside. After sliding installation on the surface of the water inlet pipe 3 and the drain pipe 4, there is a sliding sleeve 12, and a rubber cone sleeve 13 is provided on the end of the sliding sleeve 12 close to the sound insulation box 5. The rubber cone sleeve 13 and the sliding sleeve 12 can be disassembled to facilitate subsequent replacement and maintenance. The position of the sliding rubber cone sleeve 13 is used to seal the gap between the water inlet pipe 3 or the drain pipe 4 and the through hole 7 to prevent noise waves from being transmitted outward, and at the same time prevent the water inlet pipe 3 and the drain pipe 4 from direct contact with the sound insulation box 5.

[0025] Please refer to Figure 2-Figure 4As shown, the upper and lower surfaces of the water inlet pipe 3 and the drain pipe 4 are evenly provided with limit holes 8 along their axes to ensure that the sleeve 12 can be fixed when sliding along the axis. The sleeve 12 is symmetrically provided with mounting holes 14, and a wedge block 15 is slidably installed inside the mounting hole 14. The side of the wedge block 15 close to the sound insulation box 5 is set as an inclined surface, and the bottom of the wedge block 15 is adapted to the limit hole 8. The fixing of the sleeve 12 and the rubber cone sleeve 13 is achieved through the cooperation of the two, and it is ensured that the sleeve 12 can be pushed to move in the direction close to the sound insulation box 5 and cannot move in the opposite direction.

[0026] Please refer to Figure 4 As shown, a spring 16 is arranged inside the mounting hole 14, and one end of the spring 16 contacts the end surface of the wedge block 15 away from the limiting hole 8, so that the elastic force of the spring 16 is used to make the end of the wedge block 15 always have a force in the direction of the limiting hole 8, and an annular groove 17 is provided on the end surface of the wedge block 15 close to the spring 16. A movable seesaw 18 is horizontally installed inside the mounting hole 14 through a pin shaft, and a U-shaped fork rod 19 is arranged at one end of the movable seesaw 18, and the U-shaped fork rod 19 is stuck in the inner side of the annular groove 17. A control button 20 is vertically slidably installed on the surface of the sliding sleeve 12, and the end of the control button 20 contacts the upper surface of one end of the movable seesaw 18 away from the U-shaped fork rod 19. When no force is applied, the elastic force of the spring 16 is used to make the control button 20 exceed the surface of the sliding sleeve 12 for easy operation. At this time, the movable seesaw 18 is in a horizontal state.

[0027] Please refer to Figure 2 As shown, the surfaces of one side of the arc pressure plate 11 and the base 9 that are close to each other are set to be arc-shaped, and rubber pads are glued to the inner sides of the two arcs to reduce the transmission of noise from the pump body 1 to the sound insulation box 5 when it is working.

[0028] Please refer to Figure 3 As shown, a connecting pulley 2 is provided at the power input end of the pump body 1, and the connecting pulley 2 is placed outside the sound insulation box 5 to facilitate connection with the automobile power unit.

[0029] Working principle: During installation, the external connecting pulley 2 is connected to the automobile power mechanism through a belt. The screwed threaded rod 10 can drive the arc pressure plate 11 to move downward to clamp and fix the middle pump body 1 to ensure the stability of the connection between the pump body 1 and the sound insulation box 5, so as to drive the internal blades of the pump body 1 to rotate and realize the transportation of the refrigerant. Then, the water inlet pipe 3 and the drain pipe 4 are connected to the coolant delivery pipe respectively, and then the position of the sliding sleeve 12 on the surface of the water inlet pipe 3 and the drain pipe 4 is adjusted so that the rubber cone sleeve 13 blocks the through hole 7, and fixes it through the cooperation of the wedge block 15 and the limit hole 8. The matching direction of the wedge block 15 and the limiting hole 8 ensures that the sliding sleeve 12 can only move toward the side close to the sound insulation box 5 and cannot move in the opposite direction, so as to maintain the stability of the sliding sleeve 12 and the rubber cone sleeve 13. If it needs to be removed, the control button 20 can be pressed to drive the movable rocker 18 to tilt, and the wedge block 15 is retracted toward the inside of the mounting hole 14 through the cooperation of the U-shaped fork rod 19 and the annular groove 17, and then the movement is realized, and the arc pressure plate 11 and the rubber pad on the surface of the base 9, as well as the two rubber cone sleeves 13, are cooperated to ensure that there is no direct contact between the pump body 1 and the sound insulation box 5 to prevent noise transmission.

[0030] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A noise reduction structure for an automobile water pump, comprising a pump body (1) and a sound insulation box (5), characterized in that: The interior of the soundproof box (5) is hollow, the pump body (1) is placed inside the soundproof box (5), the inner wall of the soundproof box (5) is paved with soundproof cotton (6), a base (9) is fixed at the bottom of the soundproof box (5), a threaded rod (10) is vertically screwed through the top of the soundproof box (5), an arc-shaped pressure plate (11) is installed at the bottom of the threaded rod (10) through a bearing, the arc-shaped pressure plate (11) is placed just above the base (9), and the pump body (1) is placed between the base (9) and the arc-shaped pressure plate (11). Between the pressure plates (11), the front side and one side surface of the sound insulation box (5) are provided with through holes (7), the front side of the pump body (1) is provided with a water inlet pipe (3), and one side of the pump body (1) is provided with a drain pipe (4), the water inlet pipe (3) and the drain pipe (4) respectively pass through the two through holes (7), and the surfaces of the water inlet pipe (3) and the drain pipe (4) are provided with a sliding sleeve (12) after sliding installation, and a rubber cone sleeve (13) is provided at one end of the sliding sleeve (12) close to the sound insulation box (5).

2. The automobile water pump noise reduction structure according to claim 1, characterized in that: Limiting holes (8) are evenly arranged on the upper and lower surfaces of the water inlet pipe (3) and the drainage pipe (4) along their axes.

3. The automobile water pump noise reduction structure according to claim 2, characterized in that: The sliding sleeve (12) is symmetrically provided with mounting holes (14), and a wedge block (15) is slidably installed inside the mounting hole (14). The side of the wedge block (15) close to the sound insulation box (5) is set as an inclined surface, and the bottom of the wedge block (15) is adapted to the limiting hole (8).

4. The automobile water pump noise reduction structure according to claim 3, characterized in that: A spring (16) is arranged inside the mounting hole (14), one end of the spring (16) contacts the end surface of the wedge block (15) away from the limiting hole (8), and an annular groove (17) is formed on the end surface of the wedge block (15) close to the spring (16).

5. The automobile water pump noise reduction structure according to claim 4, characterized in that: A movable seesaw (18) is horizontally mounted inside the mounting hole (14) via a pin shaft, a U-shaped fork rod (19) is arranged at one end of the movable seesaw (18), the U-shaped fork rod (19) is clamped inside the annular groove (17), a control button (20) is vertically slidably mounted on the surface of the sliding sleeve (12), the end of the control button (20) is in contact with the upper surface of one end of the movable seesaw (18) away from the U-shaped fork rod (19).

6. The automobile water pump noise reduction structure according to claim 1, characterized in that: The surfaces of one side of the arc-shaped pressing plate (11) and the base (9) that are close to each other are arranged in an arc shape, and rubber pads are glued to the inner sides of the two arcs.

7. The automobile water pump noise reduction structure according to claim 1, characterized in that: The power input end of the pump body (1) is provided with a connecting pulley (2), and the connecting pulley (2) is placed outside the sound insulation box (5).

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