Non-driving wheel hub bearing

Abstract

The utility model provides a non-driving wheel hub bearing, which relates to the field of hub bearings, and comprises an inner ring and an outer ring, the outer ring is sleeved on the outer side of the inner ring in a sliding manner, a flange plate is arranged on the end face of the outer side of the outer ring, the flange plate is connected with a hub, and the inner ring is connected with a non-driving shaft; a plurality of outer grooves are formed in the outer ring, a plurality of inner grooves are correspondingly formed in the inner side of the outer ring, a containing cavity is formed between the outer grooves and the corresponding inner grooves, a retainer is contained in the containing cavity, a plurality of balls are contained in the circumference of the retainer at equal angles, oil storage cavities are formed in the positions, among the inner grooves, of the outer ring, and the oil storage cavities are communicated with the bottoms of the inner grooves through oil channels. According to the non-driving wheel hub bearing, the first oil storage cavity is formed in the portion, between the inner grooves, of the outer ring, the first oil storage cavity is communicated with the bottoms of the inner grooves through the oil channels, and when the outer ring rotates along with a hub, under the action of centrifugal force, lubricating oil in the first oil storage cavity flows into the inner grooves through the oil channels to lubricate balls; and in a static state, the lubricating oil deposited in the inner channel at the lower end is gathered in the oil storage cavity I through the oil channel to be stored, so that a good lubricating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub bearings, in particular to a non-driving wheel hub bearing. Background Art

[0002] Non-driven wheel hub bearings refer to the hub bearings of non-driven wheels (usually the front wheels) in vehicles such as cars and motorcycles. The function of the hub bearing is to connect the wheel hub to the vehicle suspension system and support part of the weight of the vehicle. In non-driven wheel hub bearings, angular contact ball bearings are usually used. This type of bearing can withstand large radial and axial loads and has good seismic resistance. The maintenance and replacement of non-driven wheel hub bearings are usually simple. You only need to remove the wheel and then use special tools to remove the bearing from the wheel hub.

[0003] The non-driven wheel hub bearing includes an inner ring and an outer ring. The inner ring is connected to the non-driven shaft, and a flange is provided at the outer end of the outer ring to connect to the wheel hub. As a non-driven wheel, the outer ring rotates with the wheel hub, while the inner ring is stationary. Balls roll between the grooves of the inner ring and the outer ring, and lubricating oil or grease is contained inside for lubrication. If the lubrication is not good, the friction resistance of the bearing will increase, the wear will increase, and the noise will increase. For this reason, this case provides a good lubrication effect. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a non-driving wheel hub bearing, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a non-driven wheel hub bearing, including an inner ring and an outer ring, the outer ring is sleeved on the inner ring and slides on the outside, a flange is arranged on the outer end face of the outer ring, the flange is connected to the wheel hub, and the inner ring is connected to the non-driven shaft: a plurality of outer grooves are arranged on the outer side of the inner ring, and a plurality of inner grooves are arranged on the corresponding inner side of the outer ring, a containing chamber is formed between the outer grooves and the corresponding inner grooves, and a retaining frame is arranged therein, and a plurality of balls are accommodated at equal angles around the circumference of the retaining frame, and an oil storage chamber is arranged on the outer ring between the plurality of the inner grooves, and the oil storage chamber is connected to the bottom of the inner groove through an oil channel.

[0008] Preferably, a non-drive shaft mounting hole is opened at the center of the inner ring, and the non-drive shaft mounting hole includes a boss hole and a spline slot hole. The corresponding non-drive shaft includes a threaded section, a boss section and a spline section. The threaded section extends out of the boss hole, and the outer end face of the boss section is adapted to the inner side face of the boss hole. A spline is opened on the outer side of the spline section, and the spline is arranged in the spline slot hole.

[0009] Preferably, a plurality of threaded holes are provided on the circumference of the flange at equal angles, and a screw is internally engaged, and the flange is connected to the hub via the screw, and positioning holes are provided between the threaded holes.

[0010] Preferably, a plurality of reinforcing ribs are provided at equal angles on the circumference between the inner ring root and the flange.

[0011] Preferably, a connecting groove is provided on the inner end surface of the outer ring, and a dustproof ring is installed on the connecting groove.

[0012] Preferably, a filter screen is provided on the dustproof ring.

[0013] Preferably, the diameter of the center hole of the dustproof ring is larger than the diameter of the non-driving shaft and smaller than the outer diameter of the inner ring, and a gap is left between the dustproof ring and the outer end surface of the inner ring.

[0014] Preferably, the retaining frame is provided with two oil storage cavities at equal angles on the circumference, temperature conducting columns are provided on both sides of the two oil storage cavities, an extrusion block is provided at the bottom of the two oil storage cavities, and a penetration hole is opened at the upper end of the two oil storage cavities.

[0015] Beneficial Effects

[0016] The utility model provides a non-driving wheel hub bearing, which has the following beneficial effects:

[0017] 1. The non-driving wheel hub bearing has an oil storage chamber 1 opened on the outer ring between the inner grooves. The oil storage chamber 1 is connected with the bottom of the inner groove through an oil channel. When the outer ring rotates with the wheel hub, under the action of centrifugal force, the lubricating oil in the oil storage chamber 1 flows into the inner groove through the oil channel to lubricate the ball. When the outer ring is stationary, the lubricating oil deposited in the inner groove at the lower end is collected in the oil storage chamber 1 through the oil channel for storage, thereby playing a good lubricating role.

[0018] 2. The non-drive wheel hub bearing has a boss hole and a spline slot hole on the inner ring, which are matched with the corresponding boss section and spline section of the non-drive shaft. The threaded section of the non-drive shaft extends out of the boss hole and is fixed by a nut, thereby realizing rapid assembly of the non-drive shaft and the inner ring and preventing axial movement of the non-drive shaft on the inner ring.

[0019] 3. The non-driving wheel hub bearing has two oil storage chambers at equal angles on the circumference of the retaining frame. When the ball rotates, the high temperature is conducted to the second oil storage chamber through the temperature conducting column, so that the extrusion block expands and the lubricating oil stored in it seeps out from the penetration hole, thereby improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a non-driving wheel hub bearing structure of the utility model Figure 1 ;

[0021] Figure 2This is a schematic diagram of a non-driving wheel hub bearing structure of the utility model Figure 2 ;

[0022] Figure 3 This is a cross-sectional view of a non-driving wheel hub bearing of the utility model;

[0023] Figure 4 This is an exploded view of a non-driving wheel hub bearing of the utility model;

[0024] Figure 5 This is a cross-sectional view of the retainer of the utility model.

[0025] In the figure: 1. Inner ring; 2. Outer ring; 3. Flange; 4. Outer groove; 5. Inner groove; 6. Cage; 7. Ball; 8. Oil storage chamber; 9. Oil channel; 10. Boss hole; 11. Spline slot hole; 12. Non-drive shaft; 13. Threaded section; 14. Boss section; 15. Spline section; 17. Threaded hole; 18. Positioning hole; 19. Reinforcing rib; 20. Connecting groove; 21. Dust ring; 22. Oil storage chamber II; 23. Temperature conduction column; 24. Extrusion block; 25. Penetration hole. DETAILED DESCRIPTION

[0026] The utility model embodiment provides a non-driving wheel hub bearing, such as Figure 1-5 As shown, it includes an inner ring 1 and an outer ring 2. The outer ring 2 is sleeved on the inner ring 1 and slides on the outside. A flange 3 is arranged on the outer end face of the outer ring 2. The outer ring 2 and the flange 3 are formed as one piece. The flange 3 is connected to the wheel hub (not shown in the figure). The inner ring 1 is connected to the non-driving shaft 12: a plurality of outer grooves 4 are arranged on the outer side of the inner ring 1, and a plurality of inner grooves 5 are arranged on the inner side of the corresponding outer ring 2. An accommodating chamber is formed between the outer groove 4 and the corresponding inner groove 5, and a retaining frame 6 is arranged therein. The retaining frame 6 accommodates a plurality of balls 7 at equal angles around the circumference. An oil storage chamber 8 is arranged on the outer ring 2 between the plurality of inner grooves 5. The oil storage chamber 8 is connected with the bottom of the inner groove 5 through an oil passage 9. An oil filling hole (not shown in the figure) is arranged on the outer ring 2 for adding lubricating oil.

[0027] In the above technical solution, an oil storage chamber 8 is opened on the outer ring 2 between the inner grooves 5, and the oil storage chamber 8 is connected with the bottom of the inner groove 5 through the oil passage 9. When the outer ring 2 rotates with the wheel hub, under the action of centrifugal force, the lubricating oil in the oil storage chamber 8 flows into the inner groove through the oil passage 9 to lubricate the ball 7. When the outer ring 2 is stationary, the lubricating oil deposited in the inner groove at the lower end is gathered in the oil storage chamber 8 through the oil passage 9 for storage, thereby playing a good lubricating role.

[0028] like Figure 3As shown, a non-drive shaft 12 mounting hole is opened at the center of the inner ring 1, and the non-drive shaft 12 mounting hole includes a boss hole 10 and a spline slot hole 11. The corresponding non-drive shaft 12 includes a threaded section 13, a boss section 14 and a spline section. The threaded section 13 extends out of the boss hole 10, and the outer end face of the boss section 14 is adapted to the inner side face of the boss hole 10. A spline is opened on the outer side of the spline section, and the spline is arranged in the spline slot hole 11.

[0029] In the above embodiment, the inner ring 1 is provided with a boss hole 10 and a spline slot hole 11, which are adapted to the corresponding boss section 14 and spline section of the non-drive shaft 12. The threaded section 13 of the non-drive shaft 12 extends out of the boss hole 10 and is fixed by a nut, thereby realizing rapid assembly of the non-drive shaft 12 and the inner ring 1 and preventing axial movement of the non-drive shaft 12 on the inner ring 1.

[0030] like Figure 1 and 2 As shown, a plurality of threaded holes 17 are provided at equal angles on the circumference of the flange 3, and screws are engaged internally, and connected to the wheel hub through the screws. Positioning holes 18 are provided between the threaded holes 17, and the positioning holes 18 are used to position the wheel hub. The screws are then passed through the holes of the wheel hub, and the wheel hub is fixed with nuts.

[0031] like Figure 2 As shown, a plurality of reinforcing ribs 19 are arranged at equal angles on the circumference between the root of the inner ring 1 and the flange 3 to strengthen the strength of the flange 3 .

[0032] like Figure 4 As shown, a connection groove 20 is formed on the inner end surface of the outer ring 2, a dustproof ring 21 is installed on the connection groove 20, and a filter screen is arranged on the dustproof ring 21, which can prevent dust without affecting heat dissipation.

[0033] like Figure 3 As shown, the diameter of the center hole of the dust ring 21 is larger than the diameter of the non-driving shaft 12 and smaller than the outer diameter of the inner ring 1 , and a gap is left between the dust ring 21 and the outer end surface of the inner ring 1 to prevent the dust ring 21 from interfering with the inner ring 1 .

[0034] like Figure 5 As shown, the retainer 6 is provided with a second oil storage cavity 22 at equal angles on the circumference, temperature conducting columns 23 are provided on both sides of the second oil storage cavity 22, an extrusion block 24 is provided at the bottom of the second oil storage cavity 22, and a penetration hole 25 is opened at the upper end of the second oil storage cavity 22.

[0035] The retainer 6 is provided with a second oil storage cavity 22 at equal angles on the circumference. When the ball 7 rotates, the high temperature is conducted to the second oil storage cavity 22 through the temperature conducting column 23, so that the extrusion block 24 expands and the lubricating oil stored therein seeps out from the penetration hole 25, thereby improving the lubrication effect.

[0036] Working principle: Figure 3As shown, the bearing is connected to the non-driving shaft, the threaded section 13 of the non-driving shaft 12 extends out of the boss hole 10 and is fixed with a nut, the side of the nut is against the outer end surface of the inner ring 1, the boss section 14 and the spline section of the non-driving shaft 12 are respectively adapted to the boss hole 10 and the spline slot hole 11, when the non-driving wheel hub bearing is in use, the outer ring 2 rotates with the wheel hub, and the lubricating oil stored in the oil storage chamber 8 flows in through the oil channel 9 under the action of centrifugal force to lubricate the ball 7, and when it is stationary, the lubricating oil gathered in the inner channel is gathered into the oil storage chamber 8 through the oil channel 9;

[0037] like Figure 5 As shown, the retainer 6 is provided with a second oil storage cavity 22 at equal angles on the circumference. When the ball 7 rotates, friction generates heat, and the high temperature is conducted to the second oil storage cavity 22 through the temperature conducting column 23, so that the extrusion block 24 expands, and the lubricating oil stored in it seeps out from the penetration hole 25, thereby improving the lubrication effect.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-driven wheel hub bearing, comprising an inner ring (1) and an outer ring (2), wherein the outer ring (2) is sleeved on the inner ring (1) and slides on the outside, a flange (3) is provided on the outer end surface of the outer ring (2), the flange (3) is connected to the wheel hub, and the inner ring (1) is connected to the non-driven shaft (12), characterized in that: A plurality of outer grooves (4) are provided on the outer side of the inner ring (1), and a plurality of inner grooves (5) are provided on the inner side of the corresponding outer ring (2). A receiving chamber is formed between the outer groove (4) and the corresponding inner groove (5), and a retaining frame (6) is provided therein. The retaining frame (6) accommodates a plurality of balls (7) at equal angles around the circumference. An oil storage chamber (8) is provided on the outer ring (2) between the plurality of inner grooves (5), and the oil storage chamber (8) is connected to the bottom of the inner groove (5) through an oil passage (9).

2. A non-driving wheel hub bearing according to claim 1, characterized in that: A non-drive shaft mounting hole is provided at the center of the inner ring (1), and the non-drive shaft mounting hole includes a boss hole (10) and a spline slot hole (11); the corresponding non-drive shaft (12) includes a threaded section (13), a boss section (14) and a spline section (15); the threaded section (13) extends out of the boss hole (10), the outer end surface of the boss section (14) is adapted to the inner surface of the boss hole (10), and the spline section (15) is arranged in the spline slot hole (11).

3. The non-driving wheel hub bearing according to claim 1, characterized in that: The flange (3) is provided with a plurality of threaded holes (17) at equal angles on its circumference, and is internally engaged with a screw rod, and is connected to the wheel hub via the screw rod, and positioning holes (18) are provided between the threaded holes (17).

4. The non-driving wheel hub bearing according to claim 1, characterized in that: A plurality of reinforcing ribs (19) are arranged at equal angles on the circumference between the root of the inner ring (1) and the flange (3).

5. The non-driving wheel hub bearing according to claim 2, characterized in that: The inner end surface of the outer ring (2) is provided with a connection groove (20), and a dustproof ring (21) is installed on the connection groove (20).

6. A non-driving wheel hub bearing according to claim 5, characterized in that: The dustproof ring (21) is provided with a filter screen.

7. The non-driving wheel hub bearing according to claim 5, characterized in that: The diameter of the center hole of the dustproof ring (21) is larger than the diameter of the non-driving shaft (12) and smaller than the outer diameter of the inner ring (1), and a gap is left between the dustproof ring (21) and the outer end surface of the inner ring (1).

8. The non-driving wheel hub bearing according to claim 1, characterized in that: The retaining frame (6) is provided with oil storage chambers (22) at equal angles on the circumference, temperature conducting columns (23) are provided on both sides of the oil storage chamber (22), an extrusion block (24) is provided at the bottom of the oil storage chamber (22), and a penetration hole (25) is provided at the upper end of the oil storage chamber (22).

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