Shaft coupling bearing for automotive electric water pump

Abstract

This utility model belongs to the field of bearings, specifically relating to a shaft bearing for an automotive electronic water pump. It includes a shaft with an inner ring on its surface. A plurality of balls are fitted onto the surface of the inner ring, arranged at equal intervals. An outer ring surrounds the balls. The inner ring has retaining ring grooves at both the top and bottom. Dustproof plates are installed on both sides of the retaining ring grooves, with their outer sides located at the top and bottom of the outer ring. An installation mechanism is connected to the interior of each dustproof plate. This utility model, by adding retaining ring grooves to the inner ring and installing dustproof plates at the top and bottom of the outer ring within these grooves, effectively prevents external impurities and dust from entering the gap between the inner and outer rings. This avoids damage to the balls from impurities, reduces wear, ensures the bearing's rotational accuracy, reduces noise and vibration, and extends its service life.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a shaft bearing for an automotive electronic water pump. Background Technology

[0002] According to the patent authorization announcement number CN210599851U, this utility model discloses a shaft connecting bearing for an automotive electronic water pump, relating to the field of bearing technology. Its key technical features are: it includes an inner ring, an outer ring, steel balls, and a cage; the inner ring has knurled patterns; the inner circumferential wall of the outer ring and the outer circumferential wall of the inner ring combine to form a raceway; two first annular walls protrude from the inner circumferential wall of the outer ring towards the outer circumferential wall of the inner ring, the first annular walls being located on both sides of the steel balls; and a second annular wall protrudes from the outer circumferential wall of the inner ring towards the first annular walls. The second annular wall protrudes with two first toothed rings, which are in clearance fit with the outer peripheral wall of the second annular wall. The second annular wall protrudes towards the first annular wall with two second toothed rings. The two first toothed rings combine to form a first receiving groove. A first sliding groove is formed on the end face of the first toothed ring, and a first slip ring is rotatably disposed in the first sliding groove. A second sliding groove is formed on the end face of the second toothed ring, and a second slip ring is rotatably disposed in the second sliding groove. This utility model is lightweight, has low starting torque and high speed, and has excellent sealing performance while ensuring the speed.

[0003] However, existing technologies have the following problems: if there is a large gap between the inner and outer rings of the bearing, not only will external impurities and dust easily enter, but these foreign objects will also continuously roll and rub inside as the bearing operates. When impurity particles are rolled into the contact area between the balls and raceways, they will act like abrasives, aggravating the wear of the contact surface, causing scratches, pits, or even cracks on the ball surface. Over a long period of time, the rotational accuracy of the bearing will decrease significantly, and the noise and vibration generated during operation will also increase significantly. In severe cases, it may even cause failures such as jamming or seizure, directly shortening the service life of the bearing, and even causing a chain reaction on the stability and safety of the entire mechanical system. In addition, excessively large gaps may also cause grease to be lost too quickly during operation, resulting in poor lubrication inside the bearing, further accelerating the wear and corrosion of the balls and raceways. Utility Model Content

[0004] The purpose of this utility model is to provide a shaft-connecting bearing for automotive electronic water pumps. This solves the problem that if there is a large gap between the inner and outer rings of the bearing, not only will external impurities and dust easily intrude, but these foreign objects will also continuously roll and rub inside as the bearing operates. When impurity particles are drawn into the contact area between the balls and raceways, they will act like abrasives, accelerating the wear of the contact surface, leading to scratches, pits, or even cracks on the ball surface. Over time, the bearing's rotational accuracy will decrease significantly, and the noise and vibration generated during operation will also increase significantly. In severe cases, it may even cause jamming, seizure, and other malfunctions, directly shortening the bearing's service life and even having a chain reaction impact on the stability and safety of the entire mechanical system. Furthermore, excessively large gaps may cause grease to leak out too quickly during operation, resulting in poor lubrication inside the bearing and further accelerating the wear and corrosion of the balls and raceways.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shaft bearing for an automotive electronic water pump, comprising a shaft, an inner ring on the surface of the shaft, and balls sleeved on the surface of the inner ring, the number of balls being several and evenly distributed, an outer ring on the outer side of the balls, retaining ring grooves being formed at the top and bottom of the surface of the inner ring, dustproof plates being provided on both sides inside the retaining ring grooves, the outer sides of the dustproof plates being located at the top and bottom of the outer ring, and an installation mechanism being connected inside the dustproof plates.

[0006] Preferably, the installation mechanism includes an installation strip located inside the dustproof plate. The installation strip is fixedly connected to both sides of the top and bottom of the outer ring. A spring is fixedly connected to the inner side of the installation strip. The other side of the spring contacts the inner wall of the dustproof plate. Limiting grooves are provided on both the front and rear sides of the dustproof plate. A square groove is provided on the inner side of the inner wall of the limiting groove. A block is provided on the side of the limiting groove away from the square groove. The block is fixedly connected to both sides of the top and bottom of the outer ring.

[0007] Preferably, an arc-shaped force-adding strip is fixedly connected to the inner side of the spring sheet, and the arc-shaped force-adding strip is located inside the dustproof plate.

[0008] Preferably, the front and rear sides of the inner side of the mounting strip are fixedly connected with reinforcing ribs, and the surface of the reinforcing ribs is fixedly connected to the surface of the outer ring.

[0009] Preferably, the surface of the dustproof plate is fixedly connected with a pushing protrusion, which is located at the top and bottom of both sides of the shaft.

[0010] Preferably, anti-warping grooves are provided on both the front and rear sides of the inner side of the dustproof plate, and positioning posts are provided inside the anti-warping grooves, with the surface of the positioning posts fixedly connected to the surface of the outer ring.

[0011] Preferably, the surface of the dustproof plate is movably connected to the inner wall of the retaining ring groove, and the dustproof plate can move freely inside the retaining ring groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by adding a retaining ring groove and other structures to the inner ring, and by installing dustproof plates located at the top and bottom of the outer ring in the retaining ring groove, can effectively block external impurities and dust from entering the gap between the inner and outer rings, prevent the balls from being damaged by impurities, reduce wear, ensure the rotational accuracy of the bearing, reduce noise and vibration, and extend service life.

[0014] 2. By adding an installation mechanism and other structures to the outer ring, this utility model can ensure that the dustproof plate can stably play its protective role, improve the overall sealing performance and reliability of the bearing, and meet the working environment requirements of automotive electronic water pumps. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the outer ring of this utility model;

[0017] Figure 3 This is a perspective view of the dustproof plate of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Shaft; 2. Inner ring; 3. Ball bearing; 4. Outer ring; 5. Snap ring groove; 6. Dustproof plate; 71. Mounting strip; 72. Spring; 73. Limiting groove; 74. Square groove; 75. Block; 8. Arc-shaped reinforcing strip; 9. Reinforcing rib; 10. Pushing protrusion; 11. Anti-warping groove; 12. Positioning post. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4A shaft bearing for an automotive electronic water pump includes a shaft 1. The surface of the shaft 1 is provided with an inner ring 2. The surface of the inner ring 2 is fitted with balls 3. The number of balls 3 is several and the balls 3 are evenly distributed. An outer ring 4 is provided on the outside of the balls 3. The top and bottom of the surface of the inner ring 2 are provided with retaining ring grooves 5. Dustproof plates 6 are provided on both sides inside the retaining ring grooves 5. The outer side of the dustproof plates 6 is located at the top and bottom of the outer ring 4. An installation mechanism is provided inside the dustproof plates 6.

[0022] Please see Figure 1-3 The installation mechanism includes an installation strip 71, which is located inside the dustproof plate 6. The installation strip 71 is fixedly connected to the top and bottom sides of the outer ring 4. A spring piece 72 is fixedly connected to the inner side of the installation strip 71. The other side of the spring piece 72 contacts the inner wall of the dustproof plate 6. Limiting grooves 73 are opened on the front and rear sides of the dustproof plate 6. A square groove 74 is opened on the inner side of the inner wall of the limiting groove 73. A block 75 is provided on the side of the limiting groove 73 away from the square groove 74. The block 75 is fixedly connected to the top and bottom sides of the outer ring 4.

[0023] Furthermore, the setting of the spring piece 72 can enhance the fit between the dustproof plate 6 and the inner ring 2 and the outer ring 4, and improve the sealing effect; the cooperation of the limiting groove 73 and the square block 75 limits the installation position of the dustproof plate 6, prevents it from shifting, and ensures that the protective position of the dustproof plate 6 is accurate.

[0024] Please see Figure 1-3 An arc-shaped force-adding strip 8 is fixedly connected to the inner side of the spring 72, and the arc-shaped force-adding strip 8 is located inside the dustproof plate 6.

[0025] Furthermore, by setting the arc-shaped force strip 8, the pressure of the spring 72 on the dustproof plate 6 can be increased, making the dustproof plate 6 fit more tightly with the relevant components, reducing gaps, thereby further improving the sealing effect of the dustproof plate 6, effectively blocking the intrusion of external pollutants, reducing the probability of wear of the internal components of the bearing, and extending the service life of the bearing.

[0026] Please see Figure 1-3 The front and rear sides of the inner side of the mounting strip 71 are fixedly connected with reinforcing ribs 9, and the surface of the reinforcing ribs 9 is fixedly connected to the surface of the outer ring 4.

[0027] Furthermore, by setting the reinforcing ribs 9, the mounting strips 71 can be prevented from loosening or deforming due to vibration and other factors during bearing operation, ensuring the stability of the mounting mechanism, thereby ensuring the secure installation of the dustproof plate 6, maintaining its good dustproof effect, and improving the reliability of the overall bearing structure.

[0028] Please see Figure 1-3 The surface of the dustproof plate 6 is fixedly connected with a pusher 10, which is located at the top and bottom of both sides of the shaft 1.

[0029] Furthermore, by pushing the protruding strip 10, operators can easily install, adjust, or replace the dust cover 6, which improves the convenience of maintenance, saves operation time, and helps to improve the maintenance efficiency of the bearing.

[0030] Please see Figure 1-4 The dustproof plate 6 has anti-warping grooves 11 on both the front and rear sides. The anti-warping grooves 11 have positioning posts 12 inside, and the surface of the positioning posts 12 is fixedly connected to the surface of the outer ring 4.

[0031] Furthermore, by setting the anti-warping groove 11 and the positioning post 12, the front and rear sides of the dustproof plate 6 can be limited to prevent the dustproof plate 6 from warping and deforming when the bearing is running or subjected to external force, ensuring that the dustproof plate 6 always maintains a good fit, maintains its sealing and dustproof performance, and improves the structural stability and service life of the bearing.

[0032] Please see Figure 1-3 The surface of the dustproof plate 6 is movably connected to the inner wall of the retaining ring groove 5, and the dustproof plate 6 can move freely inside the retaining ring groove 5.

[0033] Furthermore, by setting up the dustproof plate 6, the dustproof plate 6 can be adaptively adjusted with the slight displacement of related components during the operation of the bearing, avoiding stress concentration or damage caused by rigid connection. At the same time, it ensures that the dustproof plate 6 always stays in contact with components such as the inner ring 2 and outer ring 4, without affecting its sealing effect, thus improving the flexibility and adaptability of the bearing.

[0034] The specific implementation process of this utility model is as follows: In use... Figure 1 The outer ring 4 is in a state where dustproof plates 6 are installed on both sides of the top and bottom. The dustproof plates 6, together with the retaining ring groove 5, can be installed stably, and external impurities cannot enter the inner side of the inner ring 2 and the outer ring 4. The ball 3 is protected, and the grease of the inner ring 2 and the outer ring 4 is easy to preserve and will not easily leak out from the gap between them.

[0035] Later, when grease needs to be added to the inner side of the inner ring 2 and the outer ring 4, pull the dustproof plate 6 to move away from the shaft 1. The dustproof plate 6 compresses the spring 72, and the dustproof plate 6 drives the limiting groove 73 and the square groove 74 to move. When the square groove 74 and the block 75 overlap, the limiting groove 73 and the block 75 lose their limiting effect, and the dustproof plate 6 exits from the inside of the retaining ring groove 5. All positioning effects on the dustproof plate 6 are released. Move the dustproof plate 6 in the upward and downward directions, and the dustproof plate 6 separates from the surface of the block 75. The gap between the inner ring 2 and the outer ring 4 can then be exposed, and the user can add grease to the gap.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaft bearing for an automotive electronic water pump, comprising a shaft (1), characterized in that: The surface of the shaft (1) is provided with an inner ring (2), and the surface of the inner ring (2) is fitted with balls (3). There are several balls (3), and the balls (3) are evenly distributed. An outer ring (4) is provided on the outside of the balls (3). The top and bottom of the surface of the inner ring (2) are provided with retaining ring grooves (5). Dustproof plates (6) are provided on both sides inside the retaining ring grooves (5). The outer side of the dustproof plates (6) is located at the top and bottom of the outer ring (4). An installation mechanism is provided inside the dustproof plates (6).

2. The shaft bearing for an automotive electronic water pump according to claim 1, characterized in that: The installation mechanism includes an installation strip (71) located inside the dustproof plate (6). The installation strip (71) is fixedly connected to the top and bottom sides of the outer ring (4). A spring piece (72) is fixedly connected to the inner side of the installation strip (71). The other side of the spring piece (72) contacts the inner wall of the dustproof plate (6). Limiting grooves (73) are opened on the front and rear sides of the dustproof plate (6). A square groove (74) is opened on the inner side of the inner wall of the limiting groove (73). A block (75) is provided on the side of the limiting groove (73) away from the square groove (74). The block (75) is fixedly connected to the top and bottom sides of the outer ring (4).

3. The shaft bearing for an automotive electronic water pump according to claim 2, characterized in that: An arc-shaped force-adding strip (8) is fixedly connected to the inner side of the spring piece (72), and the arc-shaped force-adding strip (8) is located inside the dustproof plate (6).

4. The shaft bearing for an automotive electronic water pump according to claim 2, characterized in that: The front and rear sides of the inner side of the mounting strip (71) are fixedly connected with reinforcing ribs (9), and the surface of the reinforcing ribs (9) is fixedly connected to the surface of the outer ring (4).

5. The shaft bearing for an automotive electronic water pump according to claim 1, characterized in that: The surface of the dustproof plate (6) is fixedly connected with a pusher ridge (10), which is located at the top and bottom of both sides of the shaft (1).

6. The shaft bearing for an automotive electronic water pump according to claim 1, characterized in that: The dustproof plate (6) has anti-warping grooves (11) on both the front and rear sides. The anti-warping grooves (11) are equipped with positioning posts (12) inside. The surface of the positioning posts (12) is fixedly connected to the surface of the outer ring (4).

7. The shaft bearing for an automotive electronic water pump according to claim 1, characterized in that: The surface of the dustproof plate (6) is movably connected to the inner wall of the retaining ring groove (5), and the dustproof plate (6) can move freely inside the retaining ring groove (5).

Images