Hub bearing with locking mechanism

Abstract

The utility model discloses a hub bearing with a locking mechanism, which comprises an inner shaft sleeve, an outer shaft sleeve, a rolling body and a locking component, the inner shaft sleeve is rotatably connected in the outer shaft sleeve, the outer ring of the inner shaft sleeve is provided with two first ball grooves, and the inner ring of the outer shaft sleeve is provided with second ball grooves matched with the first ball grooves. Two sets of rolling bodies are connected between the outer shaft sleeve and the inner shaft sleeve in a rolling mode and connected into the first ball groove and the second ball groove in a rolling mode respectively, one end of the inner shaft sleeve penetrates out of the outer shaft sleeve in the radial direction and then is fixedly connected with the flange plate, and the other end of the inner shaft sleeve penetrates out of the outer shaft sleeve in the radial direction and then is provided with a locking assembly. The utility model aims to provide a hub bearing which is stable in structure, is provided with a locking mechanism and has double anti-loosening functions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wheel hub bearing, and specifically relates to a wheel hub bearing with locking mechanism. BACKGROUND

[0002] As the core component of vehicle transmission system, wheel hub bearing bears the important functions of supporting vehicle body weight, transmitting driving force and ensuring the stable operation of wheels. In the traditional wheel hub bearing structure, the locking mode of shaft and bearing is usually realized by mechanical fasteners cooperating with compression devices. However, under the long-term working condition of alternating load and vibration, the locking mechanism is prone to loosen and fail, which leads to the decrease of shafting connection stability, and may even cause wheel swing or abnormal wear of bearing. Especially for heavy vehicles or engineering machinery with high frequency vibration, the conventional locking structure often needs to be matched with complex anti-loosening components, which not only increases the assembly complexity, but also is prone to gap accumulation effect due to the cooperation of multi-stage locking parts. In addition, the brake disc of the wheel hub bearing in the prior art is usually an independent installation structure, which is designed in a split type with the bearing body, resulting in complicated assembly process and the problem of connection surface precision deviation affecting braking efficiency. SUMMARY

[0003] In view of the above problems in the prior art, the utility model aims to provide a wheel hub bearing with stable structure, locking mechanism and double anti-loosening function.

[0004] The utility model discloses the technical scheme adopted for realizing the above-mentioned purpose is: a wheel hub bearing with locking mechanism, including inner shaft sleeve, outer shaft sleeve, rolling body, locking assembly, the inner shaft sleeve is rotatably connected in the outer shaft sleeve, the inner shaft sleeve and the outer shaft sleeve constitute the core support structure of bearing, realize rotation and carrying function, the outer ring of inner shaft sleeve is set with two first ball grooves, the inner ring of outer shaft sleeve is set with the second ball groove of adaptation, two groups of rolling bodies are rotatably connected between the outer shaft sleeve and the inner shaft sleeve, the rotating resistance of inner shaft sleeve and outer shaft sleeve can be reduced through rolling body, and the rolling body is rotatably connected in first ball groove and second ball groove respectively, is used for realizing the radial positioning of rolling body, one end of inner shaft sleeve is fixedly connected with flange plate after going out along the outer shaft sleeve in the axial direction, and the installation and fixation with wheel hub can be realized through flange plate, locking assembly is set up after going out along the outer shaft sleeve in the radial direction at the other end of inner shaft sleeve, and is used for realizing the locking and fixing of inner shaft sleeve internal shaft rod;

[0005] The locking assembly comprises a locking sleeve, a threaded sleeve and a hexagonal operating block, a sliding sleeve port is formed in one end of the inner shaft sleeve, the locking sleeve is slidably connected in the sliding sleeve port, a plurality of locking pieces are fixedly connected at one end of the locking sleeve facing outside of the sliding sleeve port, the locking pieces are arranged in a ring shape and uniformly, and outer chamfers are formed at the outer periphery edges of the locking pieces, the threaded sleeve is threadedly connected in the sliding sleeve port, the locking piece sliding sleeve is connected at one end of the threaded sleeve, and inner chamfers are arranged in the threaded sleeve, the inner chamfers are oppositely arranged with the outer chamfers, and one end of the threaded sleeve is fixedly connected with the hexagonal operating block after penetrating out of the sliding sleeve port, in use, the hexagonal operating block can be rotated by using a wrench, the threaded sleeve is moved into the sliding sleeve port through threaded transmission, the inner chamfer in the threaded sleeve is abutted with the outer chamfer of the locking piece, and the inner chamfer in the threaded sleeve and the outer chamfer of the locking piece form inclined surface radial forces, so that the locking piece can lock and fix the shaft rod in the inner shaft sleeve.

[0006] In the above technical solution, a limiting groove is formed in the outer ring of the inner shaft sleeve at one end of the locking assembly, and a limiting ring is embeddedly installed in the limiting groove.

[0007] A screw hole is formed in the outer side surface of the inner shaft sleeve at one side of the limiting groove, the screw hole is communicated with the inner wall of the sliding sleeve port, a screw is threadedly connected in the screw hole, and the screw is abutted with the threaded sleeve after penetrating through the screw hole.

[0008] In the above technical solution, the end surface of the flange plate is provided with a plurality of mounting holes, and the outer periphery of the flange plate is fixedly connected with a brake disc.

[0009] In the above technical solution, a plurality of fixing ears are fixedly connected on the outer shaft sleeve away from the flange plate, and through holes are formed in the fixing ears.

[0010] In the above technical solution, a connecting groove is formed in the locking sleeve in the sliding sleeve port, a tension spring is sleevedly connected in the connecting groove, and a fixing groove is formed in the bottom of the sliding sleeve port, and the other end of the tension spring is abutted with the fixing groove.

[0011] The utility model discloses the beneficial effect:

[0012] 1, the locking mechanism reliability promotion: the radial locking force is formed by the inclined surface cooperation of the threaded sleeve and the locking piece, effectively avoids the axial displacement of the shaft rod under the vibration or impact, simplifies the locking operation and enhances the anti-vibration performance, and significantly reduces the risk of loosening.

[0013] 2, double anti-loosening guarantee: the double limiting design of the tension spring and the screw prevents the threaded sleeve from accidentally retreating from the angles of elastic pre-tightening and rigid locking, further improves the stability of the locking assembly, and prolongs the maintenance period.

[0014] 3. Brake function integration optimization: flange and brake disc integrated structure design, reduce the precision error of split type installation, reduce the assembly complexity, at the same time ensure the coaxiality of brake surface and bearing, improve the brake response efficiency.

[0015] 4. Bearing carrying capacity enhancement: the embedding design of limit ring and limit groove limits the axial displacement of rolling body, avoids the bearing failure caused by rolling body separation, and improves the service life of bearing under high load working condition.

[0016] 5. Installation convenience improvement: the standardized layout of fixing ear and mounting hole realizes the quick positioning and installation with vehicle body and hub, reduces the use of auxiliary positioning tooling, and reduces the assembly cost and time. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is overall structure schematic view of wheel hub bearing of the utility model;

[0018] Figure 2 It is sectional structure schematic view of wheel hub bearing of the utility model;

[0019] Figure 3 It is Figure 2 Detail structure schematic view of A1 part;

[0020] Figure 4 It is disassembly structure schematic view of locking assembly of the utility model;

[0021] Figure 5 It is sectional structure schematic view of outer shaft sleeve of the utility model.

[0022] In the drawing: 1 inner shaft sleeve, 2 outer shaft sleeve, 3 rolling body, 4 locking assembly, 5 first ball groove, 6 second ball groove, 7 flange, 101 locking sleeve, 102 threaded sleeve, 103 hexagonal operating block, 104 sliding sleeve port, 105 locking piece, 106 connecting groove, 107 tension spring, 108 fixed groove, 201 limit groove, 202 limit ring, 203 screw hole, 204 screw, 205 mounting hole, 206 brake disc, 207 fixing ear, 208 through hole. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.

[0024] Please refer to Figures 1-5The utility model provides a wheel hub bearing with locking mechanism, including inner sleeve 1, outer sleeve 2, rolling element 3, locking assembly 4, inner sleeve 1 is rotatably connected in outer sleeve 2, and inner sleeve 1 and outer sleeve 2 constitute the core support structure of bearing, realize rotation and load bearing function, and the outer ring of inner sleeve 1 is provided with two first ball grooves 5, and the inner ring of outer sleeve 2 is provided with the second ball groove 6 of adaptation, and two groups of rolling element 3 are rotatably connected between outer sleeve 2 and inner sleeve 1, the rotating resistance of inner sleeve 1 and outer sleeve 2 can be reduced through rolling element 3, and rolling element 3 is rotatably connected in first ball groove 5 and second ball groove 6 respectively, is used to realize the radial positioning of rolling element 3, and the one end of inner sleeve 1 is fixedly connected with flange plate 7 after being axially out of outer sleeve 2, and the mounting and fixing of wheel hub can be realized through flange plate 7, and locking assembly 4 is arranged on the other end of inner sleeve 1 after being radially out of outer sleeve 2, and is used to realize the locking of the inner shaft of inner sleeve 1;

[0025] Locking assembly 4 includes locking sleeve 101, threaded sleeve 102, hexagonal operating block 103, the port of one end of inner sleeve 1 is provided with sliding sleeve mouth 104, locking sleeve 101 is slidably connected in sliding sleeve mouth 104, the one end of locking sleeve 101 towards the outside of sliding sleeve mouth 104 is fixedly connected with a plurality of locking pieces 105, locking pieces 105 are annularly and evenly arranged, and the outer periphery edge of locking piece 105 is provided with an outer chamfer, threaded sleeve 102 is connected in sliding sleeve mouth 104 by thread, locking piece 105 sliding sleeve is connected in one end of threaded sleeve 102, and the inner chamfer is arranged in threaded sleeve 102, and the inner chamfer is oppositely arranged with the outer chamfer, and the one end of threaded sleeve 102 is fixedly connected with hexagonal operating block 103 after being out of sliding sleeve mouth 104, when using, the rotation of hexagonal operating block 103 can be realized by spanner, and the inner chamfer in threaded sleeve 102 is moved to sliding sleeve mouth 104 by thread transmission, so that the inner chamfer in threaded sleeve 102 and the outer chamfer of locking piece 105 are in contact, and the inner chamfer in threaded sleeve 102 and the outer chamfer of locking piece 105 form inclined face radial force, so that locking piece 105 can lock and fix the shaft in inner sleeve 1.

[0026] The outer ring of inner sleeve 1 at one end of locking assembly 4 is provided with limit groove 201, and limit ring 202 is embedded and installed in limit groove 201, to prevent rolling element 3 from separating from inner sleeve 1 and outer sleeve 2.

[0027] The end face of flange plate 7 is provided with a plurality of mounting holes 205, to realize the mounting and fixing of wheel hub, and the outer periphery of flange plate 7 is fixedly connected with brake disc 206, to realize the braking function with automobile caliper.

[0028] A plurality of fixed ears 207 are fixedly connected on outer sleeve 2 away from flange plate 7, and through hole 208 is formed in fixed ear 207, to realize the mounting and fixing of vehicle body.

[0029] The locking sleeve 101 located in the sliding sleeve port 104 is provided with a connecting groove 106, the connecting groove 106 is sleeved with a tension spring 107, the bottom of the sliding sleeve port 104 is provided with a fixing groove 108, the other end of the tension spring 107 is in abutment with the fixing groove 108, during installation, the locking sleeve 101 can be continuously forced by the tension spring 107, so as to prevent the locking piece 105 from being loosened accidentally due to vibration or impact.

[0030] The inner side of the inner shaft sleeve 1 located at one side of the limiting groove 201 is provided with a screw hole 203, the screw hole 203 is in communication with the inner wall of the sliding sleeve port 104, the screw hole 203 is screwed with a screw 204, the screw 204 is in abutment with the threaded sleeve 102 after passing through the screw hole 203, so as to prevent the threaded sleeve 102 from rotating outwards due to vibration or external force, thereby avoiding the locking piece 105 from being loosened accidentally.

[0031] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that, although the present application is described in the specification according to the embodiments, not every embodiment contains only one independent technical scheme, the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical schemes in each embodiment can also be combined appropriately to form other embodiments which can be understood by those skilled in the art.

Claims

1. A hub bearing with a locking mechanism, comprising an inner bushing (1), an outer bushing (2), rolling elements (3), and a locking assembly (4), characterized in that: The inner bushing (1) is rotatably connected to the outer bushing (2). The outer ring of the inner bushing (1) has two first ball grooves (5), and the inner ring of the outer bushing (2) has a matching second ball groove (6). Two sets of rolling elements (3) are rolled between the outer bushing (2) and the inner bushing (1), and the rolling elements (3) are rolled in the first ball groove (5) and the second ball groove (6) respectively. One end of the inner bushing (1) passes through the outer bushing (2) radially and is fixedly connected to the flange (7). The other end of the inner bushing (1) passes through the outer bushing (2) radially and is provided with a locking assembly (4). The locking assembly (4) includes a locking sleeve (101), a threaded sleeve (102), and a hexagonal operating block (103). A sliding sleeve opening (104) is provided at one end of the inner bushing (1). The locking sleeve (101) is slidably connected within the sliding sleeve opening (104). A plurality of locking plates (105) are fixedly connected to one end of the locking sleeve (101) facing outwards from the sliding sleeve opening (104). The locking plates (105) are arranged in a ring-shaped, uniform arrangement. The locking piece (105) has an outer chamfer on its outer periphery. The threaded sleeve (102) is threadedly connected to the sliding sleeve opening (104). The locking piece (105) is slidably connected to one end of the threaded sleeve (102). The threaded sleeve (102) has an inner chamfer, which is opposite to the outer chamfer. One end of the threaded sleeve (102) passes through the sliding sleeve opening (104) and is fixedly connected to the hexagonal operating block (103).

2. A hub bearing with a locking mechanism according to claim 1, characterized in that: A limiting groove (201) is provided on the outer ring of the inner bushing (1) located at one end of the locking assembly (4), and a limiting ring (202) is fitted into the limiting groove (201).

3. A hub bearing with a locking mechanism according to claim 2, characterized in that: A screw hole (203) is provided on the outer side of the inner bushing (1) located on one side of the limiting groove (201). The screw hole (203) is connected to the inner wall of the sliding sleeve opening (104). A screw (204) is threaded into the screw hole (203). After the screw (204) passes through the screw hole (203), it abuts against the threaded sleeve (102).

4. A hub bearing with a locking mechanism according to claim 1, characterized in that: The flange (7) has several mounting holes (205) on its end face, and a brake disc (206) is fixedly connected to the outer periphery of the flange (7).

5. A hub bearing with a locking mechanism according to claim 1, characterized in that: A plurality of fixing ears (207) are fixedly connected to the outer bushing (2) at one end away from the flange (7), and the fixing ears (207) are provided with through holes (208).

6. A hub bearing with a locking mechanism according to claim 1, characterized in that: A connecting groove (106) is provided on the locking sleeve (101) located inside the sliding sleeve opening (104). A tension spring (107) is sleeved and connected on the connecting groove (106). A fixing groove (108) is provided at the bottom of the sliding sleeve opening (104). The other end of the tension spring (107) abuts against the fixing groove (108).

Images