Low-noise bearing for automobile

Abstract

The utility model relates to a low-noise automobile bearing, which belongs to the technical field of bearings and comprises a bearing inner ring, a bearing outer ring arranged on the bearing inner ring in a sleeving manner, balls mounted between the bearing inner ring and the bearing outer ring in a rolling manner, and a noise reduction end cover assembly for reducing noise during rotation of the bearing, the two noise reduction end cover assemblies are located on the two axial sides of the bearing inner ring correspondingly, the noise reduction end cover assemblies are located between the bearing inner ring and the bearing outer ring, the balls are located between the two noise reduction end cover assemblies, and each noise reduction end cover assembly comprises a noise reduction sealing ring cover. The side, close to the balls, of the noise reduction sealing ring cover is provided with a plurality of noise reduction ring grooves which are arranged in a sleeving mode and distributed at intervals. The bearing has the effect of reducing noise generated in the using process of the bearing.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a low-noise automobile bearing. Background Art

[0002] Bearings are widely used in various transmission systems and rotating systems of automobiles to reduce load friction coefficient and support mechanical rotating bodies. Bearings include outer rings, inner rings and balls installed between the outer rings and inner rings. During the rotation of the bearings, the balls are prone to friction and vibration with the outer rings or inner rings of the bearings, generating noise, which in turn affects the driving experience of the car driver.

[0003] In the related art, lubricating oil is applied to the ball to reduce the noise generated when the ball rotates. At the same time, in order to facilitate the injection of lubricating oil into the bearing later, the two ends of the bearing are opened. However, the lubricating oil will evaporate during the use of the bearing. After the lubricating oil evaporates, the roller in the bearing will rub and vibrate with the outer ring or the inner ring of the bearing to generate noise, which makes it easier for the noise to be transmitted through the openings on both sides of the bearing. Utility Model Content

[0004] In order to reduce the noise generated by the bearing during use, the present application provides a low-noise automobile bearing.

[0005] The present application provides a low-noise automobile bearing, which adopts the following technical solution:

[0006] A low-noise automobile bearing comprises a bearing inner ring, a bearing outer ring sleeved on the bearing inner ring, balls rollingly mounted between the bearing inner ring and the bearing outer ring, and a noise reduction end cover assembly for reducing noise when the bearing rotates, wherein the noise reduction end cover assembly is provided in two groups, the two groups of the noise reduction end cover assemblies are respectively located on both sides of the axial direction of the bearing inner ring, and the noise reduction end cover assembly is located between the bearing inner ring and the bearing outer ring, the balls are located between the two groups of the noise reduction end cover assemblies, and the noise reduction end cover assembly comprises a noise reduction sealing ring cover, and a plurality of silencer ring grooves which are sleeved on each other and arranged at intervals are opened on the side of the noise reduction sealing ring cover close to the balls.

[0007] Preferably, a side of the noise reduction sealing ring cover where the noise reduction ring groove is formed is also provided with a noise reduction radial groove for connecting a plurality of the noise reduction ring grooves.

[0008] Preferably, a plurality of the noise-absorbing radial grooves are provided, and the plurality of the noise-absorbing radial grooves are circumferentially spaced apart on the noise-reducing sealing ring cover.

[0009] Preferably, the noise reduction end cover assembly further comprises noise reduction cotton, and the noise reduction cotton is arranged on a side of the noise reduction sealing ring cover which is away from the silencer ring groove.

[0010] Preferably, a convex ring is provided on the side of the noise reduction sealing ring cover facing away from the silencer ring groove, and two convex rings are provided. The two convex rings are arranged at intervals along the radial direction of the noise reduction sealing ring cover, and the noise reduction cotton is located between the two convex rings.

[0011] Preferably, lubricating oil is injected into the noise reduction cotton, and an oil seepage hole is opened on one side of the noise reduction sealing ring cover where the convex ring is arranged, the oil seepage hole is located between the two convex rings, and the oil seepage hole passes through the noise reduction sealing ring cover.

[0012] Preferably, a plurality of the oil seepage holes are provided, and the plurality of the oil seepage holes are circumferentially spaced apart on the noise reduction sealing ring cover, and the plurality of the oil seepage holes are all located between the two convex rings.

[0013] Preferably, a shielding ring for shielding the opening between the two convex rings is provided on one side of the two convex rings facing away from the noise reduction sealing ring cover.

[0014] Preferably, the shielding ring is provided with an oil filling hole connected with the two convex rings, and a blocking column is inserted into the oil filling hole in an interference fit manner.

[0015] Preferably, an outer ring groove for inserting the inner ring of the noise reduction sealing ring cover is formed on the outer wall of the bearing inner ring, and an inner ring groove for inserting the outer ring of the noise reduction sealing ring cover is formed on the inner wall of the bearing outer ring.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The noise generated by the ball during rotation will be divided and reduced by multiple silencer ring grooves and multiple silencer radial grooves, and the noise separated and eliminated by the silencer ring grooves and silencer radial grooves will be absorbed by the noise reduction cotton, thereby making the bearing less noisy during use;

[0018] 2. Lubricating oil is injected into the noise reduction cotton. The lubricating oil liquid itself has a good isolation effect on sound waves, further improving the noise reduction effect of the bearing. In addition, the lubricating oil in the noise reduction cotton can be squeezed out by squeezing the shielding ring and dripped evenly on each ball through multiple oil seepage holes to lubricate the ball, so that the noise reduction cotton itself not only plays a role in noise reduction, but also plays a role in adding lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a bearing in an embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the structure of the noise reduction sealing ring cover in an embodiment of the present application.

[0021] Figure 3Schematic diagram of an explosion of the noise reduction end cover assembly in the embodiment of the present application.

[0022] Explanation of the reference numerals: 1. Bearing inner ring; 2. Bearing outer ring; 3. Ball; 4. Noise reduction end cover assembly; 41. Noise reduction sealing ring cover; 411. Silence ring groove; 412. Silence radial groove; 413. Oil seepage hole; 42. Noise reduction cotton; 43. Convex ring; 44. Shielding ring; 45. Oil filling hole; 46. Blocking column. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 This application is described in further detail.

[0024] The present application embodiment discloses a low-noise automobile bearing. Figure 1 The low-noise automobile bearing comprises a bearing inner ring 1, a bearing outer ring 2, balls 3 and a noise reduction end cover assembly 4. The bearing outer ring 2 is sleeved on the bearing inner ring 1, and there is a space for the balls 3 to be installed between the bearing outer ring 2 and the bearing inner ring 1. The balls 3 are rollingly installed between the bearing outer ring 2 and the bearing inner ring 1. A plurality of balls 3 are provided, and the plurality of balls 3 are arranged circumferentially in the space between the bearing outer ring 2 and the bearing inner ring 1. Two groups of noise reduction end cover assemblies 4 are provided, and the two groups of noise reduction end cover assemblies 4 are respectively located on both sides of the axial direction of the bearing inner ring 1, and the noise reduction end cover assembly 4 is located between the bearing inner ring 1 and the bearing outer ring 2, and the balls 3 are located between the two groups of noise reduction end cover assemblies 4, so that the noise reduction end cover assembly 4 can reduce the transmission of the noise generated by the balls 3 when rotating.

[0025] The two groups of noise reduction end cover assemblies 4 have the same structure, and the two groups of noise reduction end cover assemblies 4 are symmetrically arranged. The following description will be made by taking one group of noise reduction end cover assemblies 4 as an example.

[0026] Reference Figure 1 and Figure 2 The noise reduction end cover assembly 4 includes a noise reduction sealing ring cover 41 and noise reduction cotton 42. The noise reduction cotton 42 is located on the side of the noise reduction sealing ring cover 41 away from the ball. In this embodiment, the noise reduction sealing ring cover 41 is preferably made of rubber material. The noise reduction sealing ring cover 41 itself can absorb the noise generated when the ball 3 rotates to a certain extent, and the noise reduction cotton 42 absorbs the noise absorbed by the noise reduction sealing ring cover 41 again, thereby reducing the noise transmitted when the bearing is running.

[0027] An outer ring groove for inserting the inner ring of the noise reduction sealing ring cover 41 is provided on the outer wall of the bearing inner ring 1, and an inner ring groove for inserting the outer ring of the noise reduction sealing ring cover 41 is provided on the inner wall of the bearing outer ring 2, so that the noise reduction sealing ring cover 41 can play a sealing role while playing a noise reduction role, preventing dust from easily entering the interior of the bearing.

[0028] Reference Figure 1 and Figure 2A silencer ring groove 411 is provided on one side of the noise reduction sealing ring cover 41 close to the ball 3, and a plurality of silencer ring grooves 411 are provided, and the central axes of the plurality of silencer ring grooves 411 coincide with each other, and the plurality of silencer ring grooves 411 are mutually nested and arranged at intervals, so that after the sound waves of the noise enter the silencer ring groove 411, they will be consumed and absorbed by the groove walls of the plurality of silencer ring grooves 411, thereby achieving the effect of noise reduction.

[0029] Reference Figure 1 and Figure 2 The noise reduction sealing ring cover 41 has a noise reduction ring groove 411 on one side thereof, and a noise reduction radial groove 412 is provided to connect the multiple noise reduction ring grooves 411. The noise reduction radial groove 412 extends along the radial direction of the noise reduction sealing ring cover 41, so that the multiple noise reduction ring grooves 411 are connected to each other. The sound waves of the noise can be dispersed into each noise reduction ring groove 411 through the noise reduction radial groove 412, further increasing the total length of the channel for the sound wave flow, so that the noise sound waves can be further consumed. In order to further increase the consumption and absorption of the noise sound waves, a plurality of noise reduction radial grooves 412 are provided, and the plurality of noise reduction radial grooves 412 are arranged circumferentially at intervals on the noise reduction sealing ring cover 41.

[0030] Reference Figure 2 and Figure 3 A convex ring 43 is integrally formed on the side of the noise reduction sealing ring cover 41 away from the silencer ring groove 411. Two convex rings 43 are provided. The central axes of the two convex rings 43 coincide with the central axis of the noise reduction sealing ring cover 41. The two convex rings 43 are sleeved together and the two convex rings 43 are arranged at intervals along the radial direction of the noise reduction sealing ring cover 41. The noise reduction cotton 42 is located between the two convex rings 43 and is limited and preserved. A shielding ring 44 is provided on the side of the two convex rings 43 away from the noise reduction sealing ring cover 41 to shield the opening between the two convex rings 43. The shielding ring 44 is glued to the two convex rings 43 by strong glue, so that the noise reduction cotton 42 is not easy to fall off from between the two convex rings 43.

[0031] Reference Figure 2 and Figure 3 , lubricating oil is injected into the noise reduction cotton 42, and an oil seepage hole 413 is opened on one side of the noise reduction sealing ring cover 41 where the convex ring 43 is set. The oil seepage hole 413 is located between the two convex rings 43, and the oil seepage hole 413 penetrates the noise reduction sealing ring cover 41, so that after the noise reduction cotton 42 is squeezed, the lubricating oil can drip from the oil seepage hole 413 onto the ball 3 to lubricate the ball 3. In order to lubricate the multiple balls 3 evenly, a plurality of oil seepage holes 413 are opened, and the plurality of oil seepage holes 413 are evenly spaced and arranged circumferentially on the noise reduction sealing ring cover 41, and the plurality of oil seepage holes 413 are all located between the two convex rings 43.

[0032] Reference Figure 2 and Figure 3The shielding ring 44 is provided with an oil injection hole 45 on one side away from the convex ring 43. The oil injection hole 45 is located between the two convex rings 43, and the oil injection hole 45 is connected to the chamber between the two convex rings 43. The staff can inject lubricating oil into the noise reduction cotton 42 through the oil injection hole 45. A blocking column 46 is inserted into the oil injection hole 45 with interference fit. When the lubricating oil is not injected into the noise reduction cotton 42, the oil injection hole 45 is blocked by the blocking column 46, thereby preventing the lubricating oil on the noise reduction cotton 42 from evaporating or leaking.

[0033] The implementation principle of a low-noise automobile bearing in the embodiment of the present application is as follows: the noise generated by the ball 3 during rotation will be divided by multiple silencer ring grooves 411 and multiple silencer radial grooves 412, and the sound waves will pass through the multiple silencer ring grooves 411 and the silencer radial grooves 412. The loss caused by the groove wall is reduced. At the same time, the noise reduction cotton 42 is injected with lubricating oil. The lubricating oil liquid itself has a good isolation effect on the sound waves, and the noise separated and worn by the silencer ring grooves 411 and the silencer radial grooves 412 will be absorbed by the noise reduction cotton 42, thereby making the noise of the bearing smaller during use. In addition, the lubricating oil in the noise reduction cotton 42 can be squeezed out by squeezing the shielding ring 44 and dripped evenly on each ball 3 through multiple oil seepage holes 413 to lubricate the ball 3, thereby making the noise reduction cotton 42 itself not only play a role in noise reduction, but also play a role in adding lubricating oil.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low-noise automobile bearing, characterized in that: The invention comprises a bearing inner ring (1), a bearing outer ring (2) sleeved on the bearing inner ring (1), a ball (3) rollingly mounted between the bearing inner ring (1) and the bearing outer ring (2), and a noise reduction end cover assembly (4) for reducing noise when the bearing rotates. The noise reduction end cover assembly (4) is provided with two groups, the two groups of the noise reduction end cover assembly (4) are respectively located on both sides of the axial direction of the bearing inner ring (1), and the noise reduction end cover assembly (4) is located between the bearing inner ring (1) and the bearing outer ring (2). The ball (3) is located between the two groups of the noise reduction end cover assembly (4). The noise reduction end cover assembly (4) comprises a noise reduction sealing ring cover (41), and a side of the noise reduction sealing ring cover (41) close to the ball (3) is provided with a plurality of silencer ring grooves (411) sleeved on each other and arranged at intervals.

2. A low-noise automobile bearing according to claim 1, characterized in that: The side of the noise reduction sealing ring cover (41) where the noise reduction ring groove (411) is provided is also provided with a noise reduction radial groove (412) for connecting a plurality of the noise reduction ring grooves (411).

3. A low-noise automobile bearing according to claim 2, characterized in that: A plurality of the noise-reducing radial grooves (412) are provided, and the plurality of the noise-reducing radial grooves (412) are arranged circumferentially at intervals on the noise-reducing sealing ring cover (41).

4. A low-noise automobile bearing according to claim 1, characterized in that: The noise reduction end cover assembly (4) further comprises noise reduction cotton (42), wherein the noise reduction cotton (42) is arranged on a side of the noise reduction sealing ring cover (41) facing away from the silencer ring groove (411).

5. A low-noise automobile bearing according to claim 4, characterized in that: A convex ring (43) is provided on the side of the noise reduction sealing ring cover (41) facing away from the silencer ring groove (411), and two convex rings (43) are provided. The two convex rings (43) are arranged at intervals along the radial direction of the noise reduction sealing ring cover (41), and the noise reduction cotton (42) is located between the two convex rings (43).

6. A low-noise automobile bearing according to claim 5, characterized in that: Lubricating oil is injected into the noise reduction cotton (42), and an oil seepage hole (413) is opened on one side of the noise reduction sealing ring cover (41) where the convex ring (43) is arranged, the oil seepage hole (413) is located between the two convex rings (43), and the oil seepage hole (413) passes through the noise reduction sealing ring cover (41).

7. A low-noise automobile bearing according to claim 6, characterized in that: A plurality of the oil seepage holes (413) are provided, and the plurality of the oil seepage holes (413) are arranged circumferentially at intervals on the noise reduction sealing ring cover (41), and the plurality of the oil seepage holes (413) are all located between the two convex rings (43).

8. A low-noise automobile bearing according to claim 6, characterized in that: A shielding ring (44) for shielding the opening between the two convex rings (43) is provided on one side of the two convex rings (43) facing away from the noise reduction sealing ring cover (41).

9. A low-noise automobile bearing according to claim 8, characterized in that: The shielding ring (44) is provided with an oil injection hole (45) communicating with the two convex rings (43), and a blocking column (46) is inserted into the oil injection hole (45) in an interference fit.

10. A low-noise automobile bearing according to claim 1, characterized in that: An outer ring groove is provided on the outer wall of the bearing inner ring (1) for inserting the inner ring of the noise reduction sealing ring cover (41), and an inner ring groove is provided on the inner wall of the bearing outer ring (2) for inserting the outer ring of the noise reduction sealing ring cover (41).

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