Automobile hub bearing convenient to lubricate

Abstract

The utility model discloses an automobile hub bearing convenient to lubricate, which relates to the technical field of hub bearings and comprises a bearing outer ring, a bearing inner ring, a raceway and steel balls, the bearing inner ring is arranged on the inner side of the bearing outer ring, and the raceway is arranged between the bearing outer ring and the bearing inner ring. Through the arrangement of the pushing mechanism, the oil injection hole and the sealing plug, the sealing plug is in sliding connection with the bearing outer ring and is fixedly connected with the push rod, so that the sealing plug can be moved into the groove by pushing the push rod, the oil injection hole can be in a conducting state at the moment, and then lubricating oil can be injected through the oil injection hole; according to the bearing lubricating device, the oil injection hole is formed in the bearing, so that lubricating operation on the bearing can be conveniently achieved, the situation that the sealing plug is lost is avoided through the mode, the oil injection hole is divided into two sections, the connecting section of the two sections of oil injection hole is obliquely arranged, lubricating oil can be conveniently prevented from flowing back, and the convenience of lubricating the bearing can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub bearings, in particular to a bearing for an automobile wheel hub which is easy to lubricate. Background Art

[0002] Bearings are an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Rolling bearings are divided into radial bearings and thrust bearings according to the load direction or nominal contact angle they can withstand. Among them, radial contact bearings are radial bearings with a nominal contact angle of 0, and radial angular contact bearings are radial bearings with a nominal contact angle greater than 0 to 45. Axial contact bearings are thrust bearings with a nominal contact angle of 90, and thrust angular contact bearings are thrust bearings with a nominal contact angle greater than 45 but less than 90. Ball bearings are a type of rolling bearings. Spherical alloy steel balls are installed between the inner and outer steel rings to reduce friction during power transmission and improve the transmission efficiency of mechanical power by rolling.

[0003] At present, the structure of the existing bearing mainly includes a bearing outer ring, a bearing inner ring, a steel ball and a sealing ring outside the steel ball. The bearing needs to be lubricated regularly during use. However, due to the high sealing between the various components of the bearing, it is difficult to add lubricating oil or grease into the bearing, and it is easy for the lubricating oil and grease that have not entered the bearing to drip onto the ground, causing waste. Some lubricating oil is injected through the oil filling hole, but the sealing plug and the oil filling hole are separate structures, so that in the process of removing the sealing plug and filling the oil, the sealing plug is easy to be lost due to its small size, thereby bringing inconvenience to the lubrication of the bearing. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a bearing for an automobile wheel hub that is easy to lubricate, so as to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bearing for an automobile wheel hub that is easy to lubricate, comprising a bearing outer ring, a bearing inner ring, a raceway and steel balls, wherein a bearing inner ring is arranged on the inner side of the bearing outer ring, a raceway is arranged between the bearing outer ring and the bearing inner ring, steel balls are rollingly connected inside the raceway, an oil filling hole is arranged inside the bearing outer ring, a sealing plug is installed at the top end inside the oil filling hole, a pushing mechanism is arranged between the sealing plug and the bearing outer ring, a movable groove is arranged inside the pushing mechanism, a push rod is slidably connected inside the movable groove, and a reset spring is welded and connected between the push rod and the movable groove.

[0006] Preferably, a groove matching the sealing plug is provided inside the bearing outer ring at one side of the oil filling hole, and the sealing plug and the bearing outer ring form a sliding structure through the groove.

[0007] Preferably, one side of the sealing plug is bonded to the push rod by glue, and the push rod is configured as an "L"-shaped structure.

[0008] Preferably, the push rod and the movable groove form an elastic structure through a return spring, and the two push rods and the return spring are both symmetrically arranged with respect to the central axis of the outer ring of the bearing.

[0009] Preferably, the inner walls of the groove and the movable groove are bonded with sealing gaskets by glue, and the three sealing gaskets are all arranged on a side close to the oil filling hole.

[0010] Preferably, a sealing mechanism is provided between the bearing outer ring and the bearing inner ring, a sealing ring bonded to the bearing outer ring by glue is provided inside the sealing mechanism, sealing retaining rings are bonded to both ends of the inner side of the sealing ring by glue, and a sealing retaining groove matching the sealing retaining ring is provided on the outer side of the bearing outer ring.

[0011] Preferably, the sealing retaining groove and the sealing retaining ring are both arranged at an inclination, and the two groups of the sealing retaining groove and the sealing retaining ring are both arranged symmetrically up and down with respect to the central axis of the outer ring of the bearing.

[0012] In summary, the utility model mainly has the following beneficial effects: the bearing of the automobile wheel hub which is easy to lubricate:

[0013] 1. Lubricating oil is easily wasted during the oiling process, and the sealing plug is easily lost, which easily brings inconvenience to the lubrication of the bearing. The utility model provides a pushing mechanism, an oiling hole, and a sealing plug. Since the sealing plug is slidably connected to the outer ring of the bearing and fixedly connected to the push rod, the sealing plug can be moved into the groove by pushing the push rod. At this time, the oiling hole can be in a conducting state, and then the lubricating oil can be injected through the oiling hole, so that the lubrication operation of the bearing can be realized easily, and the sealing plug will not be lost in this way. By setting the oiling hole into two sections, and the connecting section of the two sections of the oiling hole is inclined, it is easy to prevent the lubricating oil from flowing back, so that the convenience of lubricating the bearing can be further increased;

[0014] 2. Sealing is achieved only through the sealing ring, so that small gravel in the muddy water can easily enter the raceway through the seal, and thus can be easily fixed together with the ball, and thus can easily wear the raceway. The utility model provides a sealing mechanism, and the outer ring of the bearing and the inner ring of the bearing are initially sealed through the sealing ring, and the sealing ring and the inner ring of the bearing are sealed again through the sealing retaining ring and the sealing retaining groove. At the same time, by tilting the sealing retaining ring and the sealing retaining groove, the third seal can be easily achieved, so that the sealing effect of the bearing can be improved through multiple seals, thereby preventing small gravel in the muddy water from entering the raceway and causing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 2 It is a partial front view cutaway diagram of the utility model;

[0017] Figure 3 It is a partial top view cutaway diagram of the utility model;

[0018] Figure 4 This is a front view cutaway diagram of the sealing mechanism of the utility model.

[0019] In the figure: 1. outer ring of bearing; 2. inner ring of bearing; 3. raceway; 4. steel ball; 5. sealing mechanism; 501. sealing ring; 502. sealing retaining ring; 503. sealing retaining groove; 6. oil filling hole; 7. sealing plug; 8. pushing mechanism; 801. movable groove; 802. push rod; 803. reset spring; 804. groove; 9. sealing gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0021] The following describes an embodiment of the utility model based on its overall structure.

[0022] A bearing for an automobile wheel hub that is easy to lubricate, such as Figure 1 and Figure 4 As shown, it includes a bearing outer ring 1, a bearing inner ring 2, a raceway 3 and steel balls 4. The bearing inner ring 2 is arranged on the inner side of the bearing outer ring 1, and the raceway 3 is arranged between the bearing outer ring 1 and the bearing inner ring 2. The steel balls 4 are connected to the inside of the raceway 3 in a rolling manner, which can facilitate the support of the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0023] See also Figure 2 and Figure 3It can be seen that the inner walls of the groove 804 and the movable groove 801 are bonded with sealing gaskets 9 by glue, and the three sealing gaskets 9 are all arranged on the side close to the oil filling hole 6, which can play a sealing role and prevent lubricating oil from entering the groove 804 and the movable groove 801.

[0024] See also Figure 2 and Figure 3 It can be seen that an oil filling hole 6 is opened inside the outer ring 1 of the bearing, a sealing plug 7 is installed at the top of the oil filling hole 6, a pushing mechanism 8 is arranged between the sealing plug 7 and the outer ring 1 of the bearing, a movable groove 801 is opened inside the pushing mechanism 8, a push rod 802 is slidably connected inside the movable groove 801, one side of the sealing plug 7 is bonded to the push rod 802 by glue, and the push rod 802 is arranged as an "L" shape structure, and the sealing plug 7 can be moved into the groove 804 by pushing the push rod 802, and at this time, lubricating oil can be injected through the oil filling hole 6, thereby realizing the lubrication operation of the bearing.

[0025] See also Figure 4 It can be seen that a sealing mechanism 5 is arranged between the bearing outer ring 1 and the bearing inner ring 2, and a sealing ring 501 bonded to the bearing outer ring 1 by glue is arranged inside the sealing mechanism 5, and sealing retaining rings 502 are bonded to both ends of the inner side of the sealing ring 501 by glue, and a sealing retaining groove 503 matching the sealing retaining ring 502 is opened on the outer side of the bearing outer ring 1, and the sealing retaining groove 503 and the sealing retaining ring 502 are both inclinedly arranged, and the two groups of the sealing retaining grooves 503 and the sealing retaining rings 502 are both symmetrically arranged up and down with the central axis of the bearing outer ring 1, which can realize multiple sealing between the bearing outer ring 1 and the bearing inner ring 2, so as to prevent fine gravel in muddy water from entering the raceway and causing wear.

[0026] See also Figure 2 and Figure 3 It can be seen that a groove 804 matching the sealing plug 7 is provided inside the bearing outer ring 1 on one side of the oil filling hole 6. The sealing plug 7 and the bearing outer ring 1 form a sliding structure through the groove 804, which can facilitate the storage of the sealing plug 7 and prevent the sealing plug 7 from affecting the injection of lubricating oil.

[0027] See also Figure 2 and Figure 3 It can be seen that a return spring 803 is welded between the push rod 802 and the movable groove 801, and the push rod 802 and the movable groove 801 form an elastic structure through the return spring 803. The two push rods 802 and the return spring 803 are symmetrically arranged with respect to the central axis of the bearing outer ring 1. After the push rod 802 is released, the push rod 802 will be reset under the action of the return spring 803, and the oil filling hole 6 will be sealed by the sealing plug 7 to prevent leakage of lubricating oil.

[0028] The working principle of the utility model is as follows: when in use, the outer ring 1 of the bearing and the inner ring 2 of the bearing are initially sealed by the sealing ring 501, and at the same time, the sealing ring 501 and the inner ring 2 of the bearing are sealed again by the sealing retaining ring 502 and the sealing retaining groove 503, and the sealing retaining ring 502 and the sealing retaining groove 503 are inclined to facilitate the third sealing, so that the sealing effect of the bearing can be improved through multiple sealings, thereby preventing fine gravel in muddy water from entering the raceway 3 and causing wear. When the bearing needs to be lubricated, the sealing plug 7 can be moved to the groove 804 by pushing the push rod 802, and the oil filling hole 6 can be put into the conducting state at this time, and then the lubricating oil can be injected through the oil filling hole 6, so that the bearing can be lubricated. After the lubricating oil is injected, the push rod 802 is released, so that it will be reset under the action of the reset spring 803, and the sealing plug 7 can seal the oil filling hole 6. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0029] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A bearing for an automobile wheel hub that is easy to lubricate, comprising a bearing outer ring (1), a bearing inner ring (2), a raceway (3) and steel balls (4), characterized in that: A bearing inner ring (2) is arranged on the inner side of the bearing outer ring (1), a raceway (3) is arranged between the bearing outer ring (1) and the bearing inner ring (2), a steel ball (4) is rollingly connected inside the raceway (3), an oil filling hole (6) is opened inside the bearing outer ring (1), a sealing plug (7) is installed at the top end inside the oil filling hole (6), a pushing mechanism (8) is arranged between the sealing plug (7) and the bearing outer ring (1), a movable groove (801) is opened inside the pushing mechanism (8), a push rod (802) is slidably connected inside the movable groove (801), and a reset spring (803) is welded between the push rod (802) and the movable groove (801).

2. The bearing of an automobile wheel hub that is easy to lubricate according to claim 1, characterized in that: A groove (804) matching the sealing plug (7) is provided inside the bearing outer ring (1) on one side of the oil filling hole (6), and the sealing plug (7) and the bearing outer ring (1) form a sliding structure through the groove (804).

3. The bearing of an automobile wheel hub that is easy to lubricate according to claim 1, characterized in that: One side of the sealing plug (7) is bonded to the push rod (802) by glue, and the push rod (802) is configured as an "L"-shaped structure.

4. The bearing of an automobile wheel hub that is easy to lubricate according to claim 1, characterized in that: The push rod (802) and the movable groove (801) form an elastic structure through a return spring (803), and the two push rods (802) and the return spring (803) are both symmetrically arranged around the central axis of the bearing outer ring (1).

5. The bearing of an automobile wheel hub that is easy to lubricate according to claim 2, characterized in that: The inner walls of the groove (804) and the movable groove (801) are both bonded with sealing gaskets (9) by glue, and the three sealing gaskets (9) are all arranged on a side close to the oil filling hole (6).

6. The bearing of an automobile wheel hub that is easy to lubricate according to claim 1, characterized in that: A sealing mechanism (5) is provided between the bearing outer ring (1) and the bearing inner ring (2); a sealing ring (501) bonded to the bearing outer ring (1) by glue is provided inside the sealing mechanism (5); sealing retaining rings (502) are bonded to both ends of the inner side of the sealing ring (501) by glue; and a sealing retaining groove (503) matching the sealing retaining ring (502) is provided on the outer side of the bearing outer ring (1).

7. The bearing of an automobile wheel hub that is easy to lubricate according to claim 6, characterized in that: The sealing retaining groove (503) and the sealing retaining ring (502) are both arranged at an inclination, and the two sets of the sealing retaining groove (503) and the sealing retaining ring (502) are both arranged symmetrically up and down about the central axis of the bearing outer ring (1).

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