An integrated plastic-coated water pump housing

Abstract

The present invention relates to the technical field of vehicle-mounted water pumps. An integrated plastic-coated water pump housing comprises a water pump housing, a driving shaft and a rotor are arranged in the middle of the water pump housing, the top of the water pump housing is a water inlet and outlet, the bottom of the water pump housing is a controller end, a cavity is left in the water pump housing, a stator assembly is plastic-coated in the water pump housing, the water pump housing completely covers the stator assembly, and a waterproof heat sink is arranged in the water pump housing near one end of the controller. The present invention provides an integrated plastic-coated water pump housing that can eliminate traditional sealing structures such as waterproof sleeves, reduce the number of parts, optimize costs, reduce volume, have a smaller stator-rotor gap, and have a higher motor transmission efficiency; it solves the technical problems existing in the prior art that the current water pump structure is relatively simple, the water pump efficiency and volume cannot be further improved, and the internal and external structures cannot be optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted water pumps, and in particular to an integrated plastic-coated water pump housing. Background Art

[0002] The automotive industry is developing rapidly. As the performance of automobiles is developing towards being safer, more reliable, more stable, environmentally friendly and energy-saving, in order to ensure the stable operation of the automobile powertrain, it is necessary to be equipped with a complete actuator. Therefore, various actuators with motors are widely used in automobile powertrains, including hydraulic actuators, gear selector actuators, brake assist, etc.

[0003] To ensure the cooling of the engine, a water pump is needed to provide power for the coolant circulation. The water pump itself is powered by an internal motor. The current water pump structure is relatively simple. In order to increase the efficiency of the water pump and reduce the size of the water pump, a more optimized internal and external structure design is needed. In addition, due to its working environment, the sealing of the motor needs to be ensured, so there is a need for improvement. Summary of the invention

[0004] The present invention provides an integrated plastic-coated water pump housing that can eliminate traditional sealing structures such as waterproof sleeves, reduce the number of parts, optimize costs, reduce volume, have a smaller stator-rotor gap, and have higher motor transmission efficiency; it solves the technical problems in the prior art that the current water pump structure is relatively simple, the water pump efficiency and volume cannot be further improved, and the internal and external structures cannot be optimized.

[0005] The above technical problem of the present invention is solved by the following technical scheme: an integrated plastic-coated water pump housing, including a water pump housing, a driving shaft and a rotor are arranged in the middle of the water pump housing, the top of the water pump housing is a water inlet and a water outlet, the bottom of the water pump housing is a controller end, a cavity is left in the water pump housing, a stator assembly is plastic-coated in the water pump housing, the water pump housing completely covers the stator assembly, and a waterproof heat sink is arranged in the water pump housing near one end of the controller. The stator assembly in the utility model is first injection molded, and then the water pump housing is directly plastic-coated outside the stator assembly, the stator assembly is completely plastic-coated in the water pump housing, the sealing of the stator assembly can be ensured, and there is no need for traditional waterproof sleeves, sealing rings and other waterproof structures, the coolant flows in from the top of the water pump, flows down along the water pump cavity to the waterproof heat sink, and then circulates to the top to flow out, in this process the rotor is completely immersed in the coolant, which can effectively dissipate heat, and the function of the waterproof heat sink is to block the coolant from flowing into the controller and dissipate heat for the controller.

[0006] Preferably, the waterproof heat sink comprises a waterproof heat sink fixedly covered at the bottom of the water pump housing. The waterproof heat sink covers the bottom of the cavity of the water pump housing, and the function of the waterproof heat sink is to block the coolant from flowing into the controller and dissipate heat for the controller.

[0007] Preferably, the waterproof heat sink is close to the PCB board at the bottom of the water pump housing. The waterproof heat sink is fixed above the PCB board at the bottom of the water pump housing, and the waterproof heat sink is close to the controller to dissipate heat from the controller.

[0008] Preferably, the waterproof heat sink is made of metal. The waterproof heat sink made of metal can ensure strength on the one hand, and can quickly absorb the heat of the PCB board close to it and drain the coolant on the other hand, which can effectively prevent the coolant from flowing into the controller and dissipate heat from the controller because it is close to the controller.

[0009] Preferably, the drive shaft is installed on the shaft installation position. The drive shaft is installed on the shaft installation position, which can be fixed and does not affect the circulation of the coolant.

[0010] Preferably, a plurality of cooling holes arranged in a plum blossom shape are provided on the shaft mounting position outside the drive shaft. The cooling holes arranged in a plum blossom shape are convenient for installing the drive shaft, do not affect the circulation of the coolant in the cavity of the water pump housing, and can also increase the circulation volume.

[0011] Preferably, a controller cover is provided at the bottom of the water pump housing, and the water pump housing and the controller cover are buckled together by buckles. The controller cover at the bottom of the water pump housing is fixed to the water pump housing by buckles, which is convenient for quick assembly.

[0012] Therefore, the one-piece plastic-coated water pump housing of the present invention has the following advantages: by optimizing the internal and external structures of the water pump, the traditional sealing structures such as the waterproof sleeve can be eliminated, the number of parts is reduced, the cost is optimized, the volume is reduced, the stator-rotor gap is smaller, and the motor transmission efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of an integrated plastic-coated water pump housing of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the top view structure.

[0015] Figure 3 yes Figure 1 Schematic diagram of the main cross-sectional structure.

[0016] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the water pump housing.

[0017] Figure 5 yes Figure 4 Schematic diagram of the structure viewed from above.

[0018] In the figure, there are a water pump housing 1, a controller cover 2, a buckle 3, a drive shaft 4, a rotor 5, a stator assembly 6, a shaft mounting position 7, a cooling hole 8, and a waterproof heat sink 9. DETAILED DESCRIPTION

[0019] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1 and 2 As shown in Figures 3, 4 and 5, an integrated plastic-coated water pump housing includes a water pump housing 1, a controller cover 2 is installed at the bottom of the water pump housing 1, and the controller cover 2 is fastened to the water pump housing 1 by a buckle 3.

[0022] The top of the water pump housing 1 is the water inlet and outlet end, the bottom of the water pump housing 1 is the controller installation end, and a driving shaft 4 is installed at the center of the water pump housing 1, and a rotor 5 is arranged on the outer sleeve of the driving shaft 4.

[0023] A cavity is reserved in the water pump housing 1 , and a stator assembly 6 is molded in the water pump housing 1 . The stator assembly 6 is completely covered in the water pump housing 1 , and the stator assembly 6 is located outside the rotor 5 .

[0024] The drive shaft 4 is mounted on the shaft mounting position 7 , and a plurality of cooling holes 8 distributed in a plum blossom shape are provided on the shaft mounting position 7 outside the drive shaft 4 .

[0025] A waterproof heat sink is installed at a section of the bottom of the water pump housing 1 close to the controller.

[0026] The waterproof heat sink comprises a waterproof heat sink 9 fixed above the PCB board at the bottom of the water pump housing 1 , and the waterproof heat sink 9 is close to the PCB board at the bottom.

[0027] The waterproof heat sink 9 is made of metal.

[0028] The stator assembly 6 in the utility model is firstly injection molded, and then the water pump housing 1 is directly overmolded outside the stator assembly 6. The stator assembly 6 is completely overmolded in the water pump housing 1, which can ensure the sealing of the stator assembly 6, and there is no need for traditional waterproof structures such as waterproof sleeves and sealing rings.

[0029] The coolant flows in from the top of the water pump, flows down along the water pump cavity to the waterproof heat sink 9, and then circulates to the top and flows out. In this process, the rotor 5 is completely immersed in the coolant, which can effectively dissipate heat.

[0030] The metal waterproof heat sink 9 can ensure strength on the one hand, and can quickly absorb the heat of the adjacent PCB board and drain the coolant on the other hand, which can effectively block the coolant from flowing into the controller and dissipate heat for the controller because it is close to the controller.

Claims

1. An integrated plastic-coated water pump housing, comprising a water pump housing, a driving shaft and a rotor are arranged in the middle of the water pump housing, the top of the water pump housing is a water inlet and outlet, and the bottom of the water pump housing is a controller end, characterized in that: A cavity is reserved in the water pump housing, a stator assembly is plastic-coated in the water pump housing, the water pump housing completely covers the stator assembly, and a waterproof heat sink is provided in the water pump housing near one end of the controller.

2. The one-piece plastic-coated water pump housing according to claim 1, characterized in that: The waterproof heat sink comprises a waterproof heat sink plate fixedly covered on the bottom end of the water pump housing.

3. The one-piece plastic-coated water pump housing according to claim 2, characterized in that: The waterproof heat dissipation plate is close to the PCB board at the bottom of the water pump housing.

4. The one-piece plastic-coated water pump housing according to claim 3, characterized in that: The waterproof heat dissipation plate is made of metal.

5. The one-piece plastic-coated water pump housing according to claim 1, characterized in that: The driving shaft is installed on the shaft installation position.

6. The one-piece plastic-coated water pump housing according to claim 5, characterized in that: A plurality of cooling holes distributed in a plum blossom shape are provided on the shaft mounting position outside the driving shaft.

7. The one-piece plastic-coated water pump housing according to claim 1, characterized in that: A controller cover is provided at the bottom of the water pump housing, and the water pump housing and the controller cover are buckled together by snaps.

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