CN215762405U

CN215762405U - Electronic water pump bearing structure and electronic water pump

Info

Publication number: CN215762405U
Application number: CN202121863389.4U
Authority: CN
Inventors: 朱海钟; 周煜科
Original assignee: Huayu Pierboge Pump Technology Co ltd
Current assignee: Huayu Pierboge Pump Technology Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-08
Anticipated expiration: 2031-08-10

Abstract

The utility model relates to the technical field of electronic water pumps, in particular to an electronic water pump bearing structure and an electronic water pump comprising the same. The bearing structure of the electronic water pump comprises a rotating shaft and a rotor, wherein the rotor is arranged on the rotating shaft, and the rotor and the rotating shaft are integrally formed. The integral forming of the rotating shaft and the rotor eliminates the clearance of axial movement of the rotor, reduces the axial movement of the rotor and the abrasion between the rotor and the rotating shaft, has low noise, is beneficial to reducing the NVH (noise, vibration and sound vibration roughness) value of the electronic water pump during working, and also reduces the assembly process.

Description

Electronic water pump bearing structure and electronic water pump

Technical Field

The utility model relates to the technical field of electronic water pumps, in particular to an electronic water pump bearing structure and an electronic water pump comprising the same.

Background

The electronic water pump is popular among people in the industry because of its advantages of compact structure, convenient use, powerful function, long service life, stable performance, low noise, low energy consumption, high efficiency and the like, and along with the rapid development of industry, the electronic water pump has more and more extensive application fields, especially has wide application in the automobile field.

At present, in the field of automobiles, the problem of abrasion of bearings of electronic water pumps always exists. The bearing structure of the electronic water pump comprises an impeller, a rotating shaft, a rotor and a bearing, wherein the impeller is sleeved on the rotating shaft and is positioned in a cavity formed by the volute of the water pump and the motor shell, the outer ring of the bearing is matched with the rotor, the inner ring of the bearing is matched with the rotating shaft, and the rotor is connected with the rotating shaft through the bearing. Because of the pressure of water when the electronic water pump works, the rotor has a gap of axial movement, and meanwhile, the rotor is always subjected to unidirectional abrasion in the axial direction under the action of the pressure, so that the abrasion of a bearing made of graphite or plastic is caused, and finally, the abrasion of an impeller and a volute of the water pump is caused, so that the electronic water pump fails. Because the cooperation of graphite system or plastics system bearing and pivot is clearance fit, also can produce wearing and tearing between bearing and the pivot, lead to the clearance grow of wearing and tearing, finally the electronic water pump leads to inefficacy.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide an electronic water pump bearing structure for reducing axial movement of a rotor, so as to overcome the above-mentioned defects in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides an electronic water pump bearing structure which comprises a rotating shaft and a rotor, wherein the rotor is arranged on the rotating shaft, and the rotor and the rotating shaft are integrally formed into a whole.

Preferably, the electronic water pump bearing structure further comprises an impeller, the impeller is sleeved on the rotating shaft, and the impeller is in interference fit with the rotating shaft.

Preferably, the rotating shaft is provided with anti-skid patterns, and the impeller is sleeved on the anti-skid patterns.

Preferably, the electronic water pump bearing structure further comprises a first bearing and a motor housing, the rotating shaft is arranged in the motor housing, an inner ring of the first bearing is in interference fit with the rotating shaft, and an outer ring of the first bearing is in interference fit with the motor housing.

Preferably, the first bearing is a silent bearing.

Preferably, the electronic water pump bearing structure further comprises a second bearing and a bearing seat, an inner ring of the second bearing is in interference fit with the rotating shaft, an outer ring of the second bearing is in interference fit with the bearing seat, and the bearing seat is connected with the motor shell.

Preferably, the bearing housing is welded to the motor housing.

Preferably, the first bearing and the second bearing are silent bearings.

Preferably, the first bearing and the second bearing are respectively disposed at both sides of the rotor.

The utility model also provides an electronic water pump which comprises the electronic water pump bearing structure.

Compared with the prior art, the utility model has the remarkable progress that:

the electronic water pump bearing structure and the electronic water pump comprising the same have the advantages that the rotor and the rotating shaft are integrally formed, the rotating shaft and the rotor are integrally formed, the gap of axial movement of the rotor is eliminated, the axial movement of the rotor and the abrasion between the rotor and the rotating shaft are reduced, the noise is low, the NVH (noise, vibration and harshness) value of the electronic water pump during working is favorably reduced, and the assembly process is also reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of an electronic water pump bearing according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

1. rotating shaft 2 and rotor

3. Impeller 4 and first bearing

5. Motor housing 6 and second bearing

7. Bearing seat

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Fig. 1 shows an embodiment of a bearing structure of an electronic water pump according to the present invention. The electronic water pump bearing structure of the embodiment comprises a rotating shaft 1 and a rotor 2, wherein the rotor 2 is arranged on the rotating shaft 1, and the rotor 2 and the rotating shaft 1 are integrally formed into a whole. The rotor shaft 1 and the rotor 2 are integrally formed, so that the gap of axial movement of the rotor 2 is eliminated, the axial movement of the rotor 2 and the abrasion between the rotor 2 and the rotor shaft 1 are reduced, the noise is low, the NVH (noise, vibration and harshness) value of the electronic water pump during working is favorably reduced, and the assembly process is also reduced.

Preferably, in this embodiment, rotor 2 and pivot 1 can be integrated into one piece's injection molding, and injection structure is reliable firm, does dynamic balance after good rotor 2 of moulding plastics, goes the material on rotor 2, reaches suitable dynamic balance value, is favorable to reducing the NVH (noise, vibration and acoustic shock roughness) value of electronic water pump during operation.

Preferably, referring to fig. 1, the electronic water pump bearing structure of the present embodiment further includes an impeller 3, the impeller 3 is sleeved on the rotating shaft 1, and the impeller 3 is in interference fit with the rotating shaft 1 to ensure that the impeller 3 does not loosen radially in the working process.

Preferably, referring to fig. 1, the rotating shaft 1 is provided with an anti-slip pattern, and the impeller 3 is sleeved on the anti-slip pattern. The anti-slip pattern ensures that the impeller 3 does not axially loosen during operation.

Preferably, referring to fig. 1, the electronic water pump bearing structure further includes a first bearing 4 and a motor housing 5, the rotating shaft 1 is disposed in the motor housing 5, an inner ring of the first bearing 4 is in interference fit with the rotating shaft 1, abrasion between the first bearing 4 and the rotating shaft 1 is reduced, and an outer ring of the first bearing 4 is in interference fit with the motor housing 5. The gapless fit between the rotating shaft 1 and the motor shell 5 is beneficial to reducing the NVH (noise, vibration and harshness) value of the electronic water pump during working.

Preferably, the first bearing 4 is a silent bearing. The mute bearing has small vibration noise when working, and is beneficial to reducing the NVH (noise, vibration and harshness) value of the electronic water pump when working.

Preferably, referring to fig. 1, the electronic water pump bearing structure further includes a second bearing 6 and a bearing seat 7, an inner ring of the second bearing 6 is in interference fit with the rotating shaft 1, so as to reduce wear between the second bearing 6 and the rotating shaft 1, an outer ring of the second bearing 6 is in interference fit with the bearing seat 7, and the bearing seat 7 is connected with the motor housing 5. The gapless fit between the rotating shaft 1 and the bearing seat 7 further reduces the NVH (noise, vibration and harshness) value of the electronic water pump during working.

Preferably, the bearing housing 7 is welded to the motor housing 5. Preferably, in the present embodiment, the bearing seat 7 and the motor housing 5 can be connected by ultrasonic welding. The welding speed of ultrasonic welding is fast, of high quality, the intensity of the welding position can be compared with the structure of the workpiece, the concentricity of the first bearing 4 and the second bearing 6 is ensured, the NVH (noise, vibration and sound vibration roughness) value of the electronic water pump during working is reduced, and the connection between the bearing seat 7 and the motor shell 5 is more firm.

Preferably, the first bearing 4 and the second bearing 6 are both silent bearings. The two sets of mute bearings work together, and the NVH (noise, vibration and harshness) value of the electronic water pump during working is further reduced.

Preferably, referring to fig. 1, the first bearing 4 and the second bearing 6 are respectively disposed on two sides of the rotor 2, which not only ensures concentricity of the first bearing 4 and the second bearing 6, but also is beneficial to reducing NVH (noise, vibration and harshness) values of the electronic water pump during operation.

Preferably, referring to fig. 1, in this embodiment, the integrally formed rotor 2 is disposed on the rotating shaft 1, a cavity is disposed in the motor housing 5, the top end of the cavity is open, the first bearing 4 is installed at the top end of the cavity in a matching manner, the bottom end of the cavity is open, the bearing seat 7 is connected to the bottom end of the cavity in a matching manner, the second bearing 6 is installed in the bearing seat 7 in a matching manner, the rotating shaft 2 is installed in the cavity of the motor housing 5 and is matched with the first bearing 4 and the second bearing 6, and the impeller 3 is sleeved on the rotating shaft 1 on the side of the first bearing 4.

Based on the electronic water pump bearing structure, the utility model further provides an electronic water pump, and the electronic water pump of the embodiment comprises the electronic water pump bearing structure of the embodiment.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an electronic water pump bearing structure, includes pivot (1) and rotor (2), rotor (2) set up on pivot (1), its characterized in that, rotor (2) with pivot (1) is integrated into one piece.

2. The electronic water pump bearing structure according to claim 1, further comprising an impeller (3), wherein the impeller (3) is sleeved on the rotating shaft (1), and the impeller (3) is in interference fit with the rotating shaft (1).

3. The electronic water pump bearing structure according to claim 2, wherein the rotating shaft (1) is provided with an anti-slip pattern, and the impeller (3) is sleeved on the anti-slip pattern.

4. The electronic water pump bearing structure according to claim 1, further comprising a first bearing (4) and a motor housing (5), wherein the rotating shaft (1) is disposed in the motor housing (5), an inner ring of the first bearing (4) is in interference fit with the rotating shaft (1), and an outer ring of the first bearing (4) is in interference fit with the motor housing (5).

5. The electronic water pump bearing structure according to claim 4, wherein the first bearing (4) is a silent bearing.

6. The electronic water pump bearing structure according to claim 4, further comprising a second bearing (6) and a bearing seat (7), wherein an inner ring of the second bearing (6) is in interference fit with the rotating shaft (1), an outer ring of the second bearing (6) is in interference fit with the bearing seat (7), and the bearing seat (7) is connected with the motor housing (5).

7. The electronic water pump bearing structure according to claim 6, wherein the bearing housing (7) is welded to the motor housing (5).

8. The electronic water pump bearing structure according to claim 6, wherein the first bearing (4) and the second bearing (6) are silent bearings.

9. The electronic water pump bearing structure according to claim 6, wherein the first bearing (4) and the second bearing (6) are respectively disposed at both sides of the rotor (2).

10. An electronic water pump characterized by comprising the electronic water pump bearing structure according to any one of claims 1 to 9.