CN205331003U - Shielding formula is rotor subassembly for electronic pump - Google Patents

Abstract

The utility model relates to the technical field of automobile water pumps, in particular to a shielded electronic water pump rotor assembly, which includes a motor shaft, a rotor mounted on the motor shaft and a shielding sleeve for installing the motor shaft. One end of the shielding sleeve is an open end, and the A sealing ring is provided on the outer peripheral surface, and the opening end and the end cover of the electronic water pump are initially positioned and sealed by the sealing ring. The shielded electronic water pump rotor assembly of the utility model is fixedly connected with the end cover through screws, so that the motor shaft, the shielding sleeve and the electronic water pump form a whole, and the motor shaft will not be misaligned due to the size of the stator or the motor shell parts. When assembling, the sealing ring at the opening end of the shielding sleeve is initially positioned with the end cover of the electronic water pump, and then the opening end of the shielding sleeve is fixedly connected to the end cover through screws, so that the motor components will not be disassembled due to the adsorption of the rotor and the stator.

Description

A shielded electronic water pump rotor assembly

technical field

The utility model relates to the technical field of automobile water pumps, in particular to a rotor assembly of an electronic water pump.

Background technique

Many existing electronic shielded water pumps use shielding sleeves that are not sealed at both ends, and are sealed with O-rings. Not to mention the increase in failure points, and the process is more complicated. In high protection levels, only using O-rings may not be able to meet its waterproof requirements. Dust-proof requirements, O-rings will inevitably age or be thermally deformed in an alternating cold and hot environment; and when assembling, multiple O-rings are positioned to increase the process assembly coefficient.

Another part is injection molded at one end and unsealed at one end. It adopts O-ring sealing and self-positioning, and axially selects the stator core limit or the bottom positioning of the casing. This requires that the dimensions of each component must be accurate, and most shielding sleeves are selected. The plastic parts and the casing are cast aluminum products. The difference in dimensional machining accuracy between the two will lead to tight or loose assembly. If the assembly is qualified, the shielding sleeve and the inner rotor of the shielding sleeve are in the cantilever beam structure. Long-term operation, vibration and aging of the rubber ring will cause All will make the shielding sleeve and the casing not on the same level, increasing the wear of the shaft and bearings. And there is no fastening link, so that during assembly, the rotor and the shielding sleeve will be directly sucked into the center of the stator due to the strong magnetic attraction of the rotor, and the end cover and the shielding sleeve will also be separated due to the suction force, resulting in reassembly of the end cover assembly, and it is impossible to guarantee whether it is well assembled ;In addition, one end is sealed by injection molding. Due to the high-speed operation of the motor and the uncontrolled vibration or vibration of the car, the motor shaft will rub against the bottom of the injection molded part. Eventually, the bottom of the shielding sleeve will wear through and water will flow into the stator and fail.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art and provide a high concentricity, stable and reliable rotor assembly for shielded electronic water pumps.

In order to realize the purpose of this utility model, the technical scheme adopted is:

The shielded electronic water pump rotor assembly of the utility model includes a motor shaft, a rotor mounted on the motor shaft, and a shielding sleeve for installing the motor shaft. The motor shaft is rotatably installed in the shielding sleeve, and the shielding sleeve One end of the open end is an open end, and a sealing ring is provided on the outer peripheral surface of the open end, and the opening end and the end cover of the electronic water pump are initially positioned and sealed by the sealing ring, and the opening end extends radially outward from the connecting portion, The connecting portion of the open end is fixedly connected with the end cover of the electronic water pump.

The other end of the shielding sleeve of the utility model is a bottom cover, the bottom cover is integrally made with the shielding sleeve, the bottom cover has a mounting groove, and a stainless steel gasket is provided at the bottom of the mounting groove.

The installation groove of the utility model is provided with a rear bearing, the end of the motor shaft close to the bottom cover is rotatably installed in the shielding sleeve by means of the rear bearing, and the end of the motor shaft close to the end cover is rotatably mounted in the shielding sleeve by means of the front bearing Installed in the shielding sleeve.

The rotor of the utility model is installed between the front bearing and the rear bearing, a buffer is provided between the front bearing and the rotor, the buffer is covered with a wear-resistant sheet, and the wear-resistant sheet is socketed It is arranged on the motor shaft and close to the front bearing.

The outer circumferential surface of the opening end of the utility model is provided with a sealing groove, and the sealing ring is arranged in the sealing groove, and the sealing ring is a rubber ring.

The connection part of the opening end of the utility model is provided with a screw hole, and the connection part is fixedly connected with the end cover of the electronic water pump by means of screws.

In the utility model, a positioning post is provided on the side of the connecting portion facing the end cover, and a positioning hole matched with the positioning post is provided on the end cover, and the diameter of the positioning post is larger than the diameter of the screw hole. , or the positions of the positioning holes and the screw holes on the end cap are not on the same circumference.

In the utility model, the inside of the shielding sleeve is a liquid area, the outside of the shielding pump is a dry area, and the motor shaft is provided with a shaft hole penetrating in the axial direction.

The end cover of the utility model is provided with a liquid inlet hole, the end of the shaft hole close to the end cover is a liquid outlet hole, the inner surface of the installation groove is evenly provided with a plurality of liquid channels, and the shaft hole passes through the liquid channel communicates with the liquid zone.

The front bearing and the rear bearing described in the utility model are made of silicon carbide or graphite.

The beneficial effects of the shielded electronic water pump rotor assembly of the present utility model are:

1. The shielding sleeve is fixedly connected to the end cover through screws, and the motor shaft is installed in the shielding sleeve, so that the motor shaft, shielding sleeve and electronic water pump form a whole, and the motor shaft will not be out of center due to the size of the stator or the motor housing parts;

2. When assembling, the sealing ring at the opening end of the shielding sleeve and the end cover of the electronic water pump are initially positioned, and then the opening end of the shielding sleeve is fixedly connected to the end cover through screws, so that the motor components will not be disassembled due to the adsorption of the rotor and the stator;

3. When the motor is running, the motor shaft will rub against the stainless steel gasket when it moves to prevent the bottom cover of the shielding sleeve from being worn through;

4. The front bearing rubs against the wear-resistant plate and is lubricated by the coolant in the liquid area to reduce noise and prolong life;

5. The material of the front bearing and the rear bearing is silicon carbide or graphite, which needs to be lubricated, and the coolant in the liquid area can enter the gap between the front bearing and the motor shaft and the rear bearing and the motor shaft, so that the bearing is in a lubricated state, which can make the bearing Fully lubricated, no noise due to friction;

6. The positioning is realized through the cooperation of the positioning column and the positioning hole to prevent the screw holes from being misaligned.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is a structural schematic diagram of a rotor assembly for a shielded electronic water pump of the present invention;

Fig. 2 is a structural schematic diagram of a shielding sleeve of the present invention;

Fig. 3 is a top view of the shielding sleeve of the present invention;

Fig. 4 is a schematic diagram of the connection structure between the shielding sleeve and the end cap of the present invention;

Fig. 5 is a three-dimensional schematic diagram of the connection between the shielding sleeve and the end cover of the present invention;

Fig. 6 is a schematic diagram of the structure of the end cap of the present invention.

Among them: shielding sleeve 1; end cover 2, liquid inlet hole 21; sealing ring 3; connection part 4, positioning column 41, screw hole 42; motor shaft 5, liquid outlet hole 51; stainless steel gasket 6; liquid channel 7; buffer Part 8; Wear plate 9; Rotor 10, front bearing 101, rear bearing 102.

detailed description

In describing the present invention, it should be understood that the terms "radial", "axial", "upper", "lower", "top", "bottom", "inner", "outer" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore cannot be construed as a limitation of the present utility model. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an optional connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

As shown in Figures 1-6, the rotor assembly for the shielded electronic water pump of this embodiment includes a motor shaft 5, a rotor 10 mounted on the motor shaft 5, and a shielding sleeve 1 for installing the motor shaft 5, and the motor shaft 5 is rotatably installed In the shielding sleeve 1, one end of the shielding sleeve 1 is an open end, and a sealing ring 3 is provided on the outer peripheral surface of the opening end. The opening end and the end cover 2 of the electronic water pump are initially positioned and sealed by the sealing ring 3, and the radial direction A connecting portion 4 extends outward, and the connecting portion 4 at the open end is fixedly connected with the end cover 2 of the electronic water pump.

Specifically, a sealing groove is provided on the outer peripheral surface of the opening end, and a sealing ring 3 is arranged in the sealing groove. The sealing ring 3 is a rubber ring. The opening end and the end cover 2 of the electronic water pump are initially positioned and sealed by the sealing ring 3 . Screw holes 42 are provided on the part 4 and the end cover 2, and the connecting part 4 is fixedly connected with the end cover 2 of the electronic water pump by means of screws. 2 is provided with a positioning hole that cooperates with the positioning post 41. In order to prevent misoperation during installation, the screw hole 42 on the end cover is confused with the positioning hole. In this embodiment, the positioning post 41 on the shielding sleeve and the screw on the end cover The holes 42 are designed in different sizes, that is, the diameter of the positioning post 41 is greater than the diameter of the screw hole 42, so that the two cannot cooperate, and the positioning post 41 is prevented from sinking into the screw hole 42 on the end cover, wherein the positioning post 41 can be cylindrical , square column or other columns, the section of the positioning column 41 perpendicular to its center line is larger than the cross section of the screw hole 42 perpendicular to its center line, so that the positioning column 41 cannot sink into the screw hole 42 on the end cover. Or the positions of the positioning hole and the screw hole 42 on the end cover 2 are not on the same circumference, and the positioning hole and the positioning post 41 are in a cooperative relationship, so the positions of the positioning post 41 and the screw hole 42 are not on the same circumference when docking, and the terminal cannot be inserted. In the screw hole 42 on the cover 2, to prevent misuse.

In this embodiment, the shielding sleeve 1 is fixedly connected to the end cover 2 by screws, so that the motor shaft 5, the shielding sleeve 1 and the electronic water pump form a whole, and the motor shaft 5 will not be misaligned due to the size of the stator or the motor housing parts. When assembling, the sealing ring 3 at the opening end of the shielding sleeve 1 is initially positioned with the end cover 2 of the electronic water pump, and then the opening end of the shielding sleeve 1 is fixedly connected to the end cover 2 through screws, so that the motor will not be damaged due to the adsorption of the rotor 10 and the stator. Components disassembled.

As shown in Figure 2-4, the other end of the shielding sleeve 1 is a back cover, which is integrally made with the shielding sleeve 1. The back cover has a mounting groove, and the bottom of the mounting groove is provided with a stainless steel gasket 6. When the motor is running, the motor shaft 5 Can rub with stainless steel gasket 6 when moving, prevent shielding cover 1 back cover from wearing and tearing.

As shown in Figure 1-6, a rear bearing 102 is provided in the installation groove, and the end of the motor shaft 5 close to the bottom cover is rotatably installed in the shielding sleeve 1 by means of the rear bearing 102, and the end of the motor shaft 5 close to the end cover 2 is rotatably installed in the shielding sleeve 1 by means of the front bearing 101 is rotatably installed in the shielding sleeve 1, the rotor 10 is installed between the front bearing 101 and the rear bearing 102, and a buffer member 8 is provided between the front bearing 101 and the rotor 10, and the buffer member 8 is covered with a wear-resistant sheet 9 , the wear-resistant plate 9 is sleeved on the motor shaft 5 and arranged close to the front bearing 101, the front bearing 101 rubs against the wear-resistant plate 9, and is lubricated by the coolant, which can reduce noise and prolong the life. Preferably, the front bearing 101 And the rear bearing 102 is made of silicon carbide or graphite.

The material of the front bearing 101 and the rear bearing 102 is silicon carbide or graphite, which needs to be lubricated, and the rotor 10 also needs to be lubricated. At the same time, in order to reduce noise, the inside of the shielding sleeve 1 is designed as a liquid area, the outside of the shielded pump is a dry area, and the motor shaft 5 is designed There is a shaft hole penetrating in the axial direction. The end cover 2 is provided with a liquid inlet hole 21. The end of the shaft hole close to the end cover 2 is a liquid outlet hole 51. The inner surface of the installation groove is evenly provided with a plurality of liquid channels 7. The shaft hole The liquid channel 7 communicates with the liquid area, and the cooling liquid in the liquid area can enter the gap between the front bearing 101 and the motor shaft 5 and the rear bearing 102 and the motor shaft 5, so that the bearing is in a lubricated state, and the bearing can be fully lubricated without Friction makes noise.

It should be understood that the specific embodiments described above are only used to explain the present utility model, and are not intended to limit the present utility model. Obvious changes or changes derived from the spirit of the utility model are still within the protection scope of the utility model.

Claims (10)

1. A rotor assembly for a shielded electronic water pump, comprising a motor shaft (5), a rotor (10) mounted on the motor shaft (5) and a shielding sleeve (1) for installing the motor shaft (5), the The motor shaft (5) is rotatably installed in the shielding sleeve (1), and it is characterized in that: one end of the shielding sleeve (1) is an open end, and a sealing ring (3) is provided on the outer peripheral surface of the opening end, The opening end and the end cover (2) of the electronic water pump are initially positioned and sealed by a sealing ring (3). The opening end extends radially outwards to a connecting portion (4). The end cover (2) of the electronic water pump is fixedly connected. 2. The rotor assembly for a shielded electronic water pump according to claim 1, characterized in that: the other end of the shielding sleeve (1) is a bottom cover, and the bottom cover is integrally made with the shielding sleeve (1), so that The bottom cover has an installation groove, and the groove bottom of the installation groove is provided with a stainless steel gasket (6). 3. The rotor assembly for a shielded electronic water pump according to claim 2, characterized in that: a rear bearing (102) is provided in the installation groove, and the end of the motor shaft (5) close to the bottom cover is supported by the rear bearing (102). ) is rotatably installed in the shielding sleeve (1), and one end of the motor shaft (5) close to the end cover (2) is rotatably installed in the shielding sleeve (1) by means of a front bearing (101). 4. The rotor assembly for a shielded electronic water pump according to claim 3, characterized in that: the rotor (10) is installed between the front bearing (101) and the rear bearing (102), and the front bearing ( 101) and the rotor (10) are provided with a buffer (8), and the buffer (8) is covered with a wear-resistant sheet (9), and the wear-resistant sheet (9) is sleeved on the motor shaft (5) is arranged on and close to the front bearing (101). 5. The rotor assembly for a shielded electronic water pump according to claim 1, characterized in that: a sealing groove is provided on the outer peripheral surface of the opening end, and the sealing ring (3) is arranged in the sealing groove, and the sealing ring (3) is arranged in the sealing groove. The sealing ring (3) is a rubber ring. 6. The rotor assembly for a shielded electronic water pump according to claim 1, characterized in that: the connecting portion (4) of the open end and the end cover (2) are provided with corresponding screw holes (42), the The connecting part (4) is fixedly connected with the end cover (2) of the electronic water pump by means of screws. 7. The rotor assembly for a shielded electronic water pump according to claim 6, characterized in that: a positioning column (41) is provided on the side of the connecting part (4) facing the end cover (2), and the end cover (2) is The cover (2) is provided with a positioning hole matched with the positioning post (41), the diameter of the positioning post (41) is larger than the diameter of the screw hole (42), or the diameter of the positioning post (41) on the end cover (2) The positions of positioning holes and screw holes (42) are not on the same circumference. 8. The rotor assembly for a shielded electronic water pump according to claim 1, characterized in that: the inside of the shielding sleeve (1) is a liquid area, the outside of the shielded pump is a dry area, and the motor shaft (5 ) is provided with a shaft hole penetrating in the axial direction. 9. The rotor assembly for a shielded electronic water pump according to claim 8, characterized in that: the end cover (2) is provided with a liquid inlet hole (21), and the shaft hole is close to one end of the end cover (2) It is a liquid outlet hole (51), and the inner surface of the installation groove is uniformly provided with a plurality of liquid passages (7), and the shaft hole communicates with the liquid area through the liquid passages (7). 10. The rotor assembly for a shielded electronic water pump according to claim 3, characterized in that: the front bearing (101) and the rear bearing (102) are made of silicon carbide or graphite.