Automobile hub bearing capable of preventing steel balls from moving

Abstract

The utility model discloses an automobile hub bearing capable of preventing steel balls from moving. The automobile hub bearing comprises a bearing inner ring, a bearing outer ring, the steel balls and an elastic retaining ring, the bearing inner ring is provided with a bearing sleeve for blocking the steel balls on the outer side, the bearing sleeve is arranged on the annular groove in a sleeving mode, and the bearing inner ring is provided with a limiting mechanism for limiting the bearing sleeve; the limiting mechanism comprises a limiting ring, the limiting ring is located on the outer side of the bearing sleeve to limit the bearing sleeve and prevent the bearing sleeve from being separated from the annular groove, and a positioning mechanism for positioning the limiting ring is arranged on the annular groove; a plurality of ball grooves are formed in the outer wall of the limiting ring, the bearing sleeve is provided with rolling ball channels opposite to the ball grooves, and rolling balls are clamped between the ball grooves and the rolling ball channels; the limiting ring is locked at the position of the annular groove in multiple directions through the positioning column, so that the limiting ring rotates along with the bearing inner ring, and due to the fact that the limiting ring is completely locked, the bearing sleeve is stably supported by the balls and cannot be loosened; and by arranging the balls, friction generated when the bearing sleeve is supported and limited can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile wheel hub bearing, concretely relates to an automobile wheel hub bearing capable of preventing steel ball from moving. BACKGROUND

[0002] The automobile wheel hub unit refers to the part connecting the wheel and the axle, which is mainly connected with the rim through bolts or pins to provide central support for the wheel. The main function of the wheel hub unit is to bear the load and provide accurate guidance for the rotation of the wheel hub, which bears both axial load and radial load.

[0003] The automobile wheel hub bearing is provided with a bearing sleeve, which is used to block the steel ball on the outside. However, the bearing sleeve is generally positioned by a bearing bolt at present. For example, CN210265495U discloses a wheel hub bearing, which is provided with a limiting structure between the bearing sleeve 10 and the annular connecting part 9 to prevent the bearing sleeve 10 from loosening on the annular connecting part 9. The specific implementation of the limiting structure is mainly composed of a limiting bolt 12 with a head part 11. CN210265496U discloses a similar structure of an automobile wheel hub unit.

[0004] However, due to the long-time high-speed driving and vibration of the automobile, especially when driving on a bumpy road, the bolt for fixing the bearing sleeve is prone to loosening when the automobile shakes, which may cause the inner and outer rings of the bearing wheel hub unit to be stably positioned, and the steel ball is prone to moving. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of automobile wheel hub bearing capable of preventing steel ball from moving, limiting ring is locked in annular groove by positioning column in multiple directions, so that limiting ring rotates with bearing inner ring, since limiting ring is completely locked, so that ball bearing is stably supported to bearing sleeve, it will not loosen;By setting ball, the friction when supporting and limiting bearing sleeve can be reduced, to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of automobile wheel hub bearing capable of preventing steel ball from moving, including bearing inner ring and bearing outer ring, steel ball and elastic retaining ring;Bearing inner ring and the bearing outer ring between being equipped with rolling gap, the steel ball is loaded in the rolling gap by retainer, the rolling gap is equipped with the elastic retaining ring on the inside and outside, the bearing inner ring is equipped with the bearing sleeve for blocking the steel ball on the outside, the bearing inner ring is equipped with annular groove on outer end, the bearing sleeve is sleeved on the annular groove, the bearing inner ring is equipped with the limiting mechanism for limiting the bearing sleeve.

[0007] Preferably, the limiting mechanism comprises a limiting ring sleeved in the ring groove, the limiting ring is located outside the bearing sleeve to limit the bearing sleeve, preventing the bearing sleeve from being separated from the ring groove, and the ring groove is provided with a positioning mechanism for positioning the limiting ring.

[0008] Preferably, the positioning mechanism comprises a plurality of positioning inner grooves arranged on the outer wall of the ring groove, the inner wall of the limiting ring is provided with a second positioning inner groove corresponding to the positioning inner groove, and the positioning inner groove is provided with a positioning piece for positioning the second positioning inner groove.

[0009] Preferably, the positioning piece comprises an extrusion spring located in the positioning inner groove and a positioning column located at the head end of the extrusion spring, and the head end of the positioning column extends into the second positioning inner groove under the extrusion of the extrusion spring.

[0010] Preferably, the outer wall of the limiting ring is provided with a top hole corresponding to the second positioning inner groove, and the top hole penetrates the second positioning inner groove.

[0011] Preferably, the bearing sleeve is provided with a groove for avoiding the top hole.

[0012] Preferably, the outer wall of the limiting ring is provided with a plurality of ball grooves, the bearing sleeve is provided with a ball rolling channel opposite to the ball grooves, and a ball is clamped between the ball grooves and the ball rolling channel.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The limiting ring is locked in the ring groove in multiple directions through the positioning column, so that the limiting ring rotates with the bearing inner ring, and since the limiting ring is completely locked, the ball can stably support the bearing sleeve and will not be loose.

[0015] 2. The ball can reduce the friction when supporting and limiting the bearing sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the front view and section structure of the utility model;

[0017] Figure 2 It is a schematic view of the front view and section structure of the utility model; Figure 1

[0018] Figure 3 It is a schematic view of the limiting ring section structure of the utility model;

[0019] Figure 4 It is a schematic view of the limiting ring and ball groove side structure of the utility model.

[0020] ​In the figure: 1, bearing inner ring; 2, bearing outer ring; 3, steel ball; 4, elastic retainer ring; 5, bearing sleeve; 6, limiting ring; 7, positioning inner groove; 8, second positioning inner groove; 9, extruded spring; 10, positioning column; 11, top hole; 12, groove; 13, ball groove; 14, ball. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of automobile wheel hub bearing of steel ball can prevent the movement, including bearing inner ring 1 and bearing outer ring 2, steel ball 3 and elastic retainer ring 4;Bearing inner ring 1 with the bearing outer ring 2 between being equipped with rolling clearance, steel ball 3 is loaded in the rolling clearance by retainer, the rolling clearance inside and outside is equipped with the elastic retainer ring 4, bearing inner ring 1 is equipped with the bearing sleeve 5 of outside steel ball 3 is blocked, bearing inner ring 1 is equipped with ring groove in outer end, bearing sleeve 5 is sleeved on the ring groove, bearing inner ring 1 is equipped with the limiting mechanism of the bearing sleeve 5 is limited;When using, bearing inner ring 1 follows wheel hub rotation, bearing outer ring 2 is installed on frame, bearing inner ring 1 rotates, steel ball 3 rolls, bearing sleeve 5 is limited, bearing sleeve 5 is stably supported by limiting mechanism, it will not slack.

[0023] Specifically, the limiting mechanism includes a limiting ring 6 sleeved in the ring groove, the limiting ring 6 is located on the outside of the bearing sleeve 5 to limit it, preventing it from being separated from the ring groove, and the ring groove is provided with a positioning mechanism for positioning the limiting ring.

[0024] Specifically, the positioning mechanism includes a plurality of positioning inner grooves 7 arranged on the outer wall of the ring groove, and the inner wall of the limiting ring 6 is provided with a second positioning inner groove 8 corresponding to the positioning inner grooves 7, and the positioning inner grooves 7 are provided with positioning members for positioning the second positioning inner groove 8.

[0025] Specifically, the positioning member comprises an extrusion spring 9 located in the positioning inner groove 7 and a positioning column 10 located at the head end of the extrusion spring 9, the head end of the positioning column 10 extends into the second positioning inner groove 8 under the extrusion of the extrusion spring 9; in the embodiment, the positioning column 10 is clamped in the positioning inner groove 7 and the second positioning inner groove 8 under the action of the extrusion spring 9, so that the limiting ring 6 is locked in the ring groove in multiple directions, and the limiting ring 6 rotates with the bearing inner ring 1, and since the limiting ring 6 is completely locked, the ball 14 stably supports the bearing sleeve 5 and cannot be loosened.

[0026] Specifically, the outer wall of the limiting ring 6 is provided with a top hole 11 penetrating the second positioning inner groove 8; in the embodiment, the top hole 11 facilitates the insertion of an external member into the top hole 11 to extrude the positioning column 10, and when the positioning column 10 is completely extruded back into the positioning inner groove 7, the limiting ring 6 can be easily disassembled; similarly, the limiting ring 6 can be installed.

[0027] Specifically, the bearing sleeve 5 is provided with a groove 12 avoiding the top hole 11; in the embodiment, the groove 12 facilitates the insertion of an external rod member, avoiding blocking interference.

[0028] Specifically, the outer wall of the limiting ring 6 is provided with a plurality of ball grooves 13, the bearing sleeve 5 is provided with a ball channel opposite to the ball grooves 13, and the ball grooves 13 and the ball channel are clamped with the ball 14; in the embodiment, the limiting ring 6 rotates with the bearing inner ring 1, and since the limiting ring 6 is completely locked, the ball 14 stably supports the bearing sleeve 5 and cannot be loosened, and the ball 14 reduces the friction when the bearing sleeve 5 is supported and limited.

[0029] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail below.

[0030] Working principle: in use, the bearing inner ring 1 rotates with the hub, the bearing outer ring 2 is installed on the frame, the steel ball 3 rolls when the bearing inner ring 1 rotates, and the bearing sleeve 5 is limited, the positioning column 10 is clamped in the positioning inner groove 7 and the second positioning inner groove 8 under the action of the extrusion spring 9, so that the limiting ring 6 is locked in the ring groove in multiple directions, and the limiting ring 6 rotates with the bearing inner ring 1, and since the limiting ring 6 is completely locked, the ball 14 stably supports the bearing sleeve 5 and cannot be loosened, and the ball 14 reduces the friction when the bearing sleeve 5 is supported and limited.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car wheel hub bearing capable of preventing the steel balls from shifting, characterized in that, The application relates to a bearing, which comprises a bearing inner ring (1), a bearing outer ring (2), steel balls (3) and elastic retaining rings (4); a rolling gap is arranged between the bearing inner ring (1) and the bearing outer ring (2), the steel balls (3) are arranged in the rolling gap through a retainer, the elastic retaining rings (4) are arranged on the inner and outer sides of the rolling gap, the bearing inner ring (1) is provided with a bearing sleeve (5) for blocking the steel balls (3) on the outer side, the bearing inner ring (1) is provided with a ring groove at the outer end, the bearing sleeve (5) is sleeved on the ring groove, and the bearing inner ring (1) is provided with a limiting mechanism for limiting the bearing sleeve (5).

2. The automobile wheel hub bearing capable of preventing steel balls from moving up and down according to claim 1, characterized in that, The limiting mechanism comprises a limiting ring (6) sleeved in the ring groove, the limiting ring (6) is located on the outer side of the bearing sleeve (5) and limits the bearing sleeve (5) to prevent the bearing sleeve (5) from being separated from the ring groove, and the ring groove is provided with a positioning mechanism for positioning the limiting ring.

3. The automobile wheel hub bearing capable of preventing steel balls from moving up and down according to claim 2, characterized in that, The positioning mechanism comprises a plurality of positioning inner grooves (7) arranged on the outer wall of the ring groove, the inner wall of the limiting ring (6) is provided with a second positioning inner groove (8) corresponding to the positioning inner grooves (7), and the positioning inner grooves (7) are provided with positioning pieces for positioning the second positioning inner groove (8).

4. The automobile wheel hub bearing capable of preventing steel balls from moving up and down according to claim 3, characterized in that, The positioning pieces comprise an extrusion spring (9) located in the positioning inner groove (7) and a positioning column (10) located at the head end of the extrusion spring (9), and the head end of the positioning column (10) is inserted into the second positioning inner groove (8) under the extrusion of the extrusion spring (9).

5. The automobile wheel hub bearing capable of preventing steel balls from moving up and down as claimed in claim 4, wherein The outer wall of the limiting ring (6) is provided with a top hole (11) corresponding to the second positioning inner groove (8), and the top hole (11) penetrates the second positioning inner groove (8).

6. The automobile wheel hub bearing capable of preventing steel balls from moving up and down according to claim 5, characterized in that, The bearing sleeve (5) is provided with a recess (12) for avoiding the top hole (11).

7. The automobile wheel hub bearing capable of preventing steel balls from moving up and down according to claim 1, characterized in that, The outer wall of the limiting ring (6) is provided with a plurality of ball grooves (13), the bearing sleeve (5) is provided with a ball rolling channel opposite to the ball grooves (13), and the ball grooves (13) and the ball rolling channel are clamped with balls (14) therebetween.

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