CN215890825U

CN215890825U - Maintenance-free hub bearing

Info

Publication number: CN215890825U
Application number: CN202121961823.2U
Authority: CN
Inventors: 夏玉明
Original assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-22
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to the technical field of bearings, and particularly discloses a maintenance-free hub bearing which comprises a shell, an outer ring, an inner ring, a rolling body and a retainer, wherein the shell and the outer ring are integrally arranged to form an installation shell, two outer raceways are symmetrically arranged on the inner diameter of the installation shell, the inner ring is symmetrically arranged, the inner ring is provided with two inner raceways which are matched with the outer raceways to form an inner raceway for accommodating the rolling body to roll, and the two inner rings are connected through a clamp spring. By adopting the structure, the maintenance-free hub bearing which is convenient to install and enables the system structure to be more compact and stable is provided.

Description

Maintenance-free hub bearing

Technical Field

The utility model relates to the technical field of bearings, in particular to a maintenance-free hub bearing.

Background

Conventionally, a sealing device for a bearing prevents the entry of foreign matters such as dust, moisture, and oil from the outside and prevents the leakage of grease inside the bearing. With the development of the technology, the sealing requirements of the bearings are higher and higher aiming at different working occasions, the layout of the bearings and the sealing devices in a hub system is more and more diversified, in the prior art, the sealing devices and the bearings are separately installed and distributed and are feasible in a limited space range, the internal structure is compact, the requirements of customers cannot be met when the bearing carrying capacity of the bearings are limited to be large, and the limited space is required to be fully utilized. In addition, the matching between the outer ring of the bearing and the shell is not well determined, the outer ring slips due to the matching problem in many times, the outer ring and the shell are inconvenient to install, and the bearing and the shell are manufactured separately, so that the whole space is smaller, and the bearing capacity of the whole bearing is also restricted.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the maintenance-free hub bearing which is convenient to install and enables the system structure to be more compact and stable.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a non-maintaining wheel hub bearing, includes casing, outer lane, inner circle, rolling element and holder, the casing sets up with outer lane an organic whole and forms the installation shell, the symmetry is provided with two outer raceways on the internal diameter of installation shell, the inner circle is two that the symmetry set up, circle to be provided with and form the rolling interior raceway of rolling element holding with the cooperation of outer raceway, two the inner circle passes through the jump ring and connects.

Among the above-mentioned technical scheme, make a whole with casing and outer lane, reduced the occupation space in the wheel hub system, make system architecture compacter and stable, also be convenient for customer's installation and use.

As a further arrangement of the utility model, a flange plate is arranged on the outer diameter of the mounting shell, one end of the mounting shell is provided with a mounting hole, the other end of the mounting shell is provided with a gear ring, one end of the gear ring is sleeved on the mounting shell and forms interference fit with the mounting shell, and the other end of the gear ring is provided with teeth which are uniformly distributed at intervals along the circumferential direction of the gear ring.

Among the above-mentioned technical scheme, the ring flange is also the structure of an organic whole setting with the installation shell, and the installation is more steady, is connected the ring flange of installation shell and wheel through the bolt, carries out signal transmission through the ring gear, and the ring gear is interference fit with the installation shell, and the fitting surface need carry out abrasive machining for signal transmission is more steady.

As a further arrangement of the utility model, the inner diameter of the end part where the two inner rings are connected is provided with a clamp spring groove, and the clamp spring is clamped in the two clamp spring grooves to realize the fixed connection of the two inner rings.

Among the above-mentioned technical scheme, the jump ring card of being convenient for of jump ring groove sets up is gone into, fixes two inner circles, combines as a whole, and the effect of jump ring mainly is that the jump ring connects two inner circles when the bearing is impressing seal structure and prevents that two inner circles from dropping, guarantees seal structure's normal pressure equipment.

As a further arrangement of the utility model, the clamp spring grooves are annular, and the groove wall of one side of each clamp spring groove close to the middle is lower than the groove wall of one side far away from the middle.

Among the above-mentioned technical scheme, the guarantee jump ring can block in smoothly, avoids damaging, guarantees the stability of structure.

As a further arrangement of the utility model, a first sealing structure is arranged at one end of the mounting shell facing the gear ring, the first sealing structure is positioned between the mounting shell and the inner ring close to the gear ring and forms an interference fit with the mounting shell and the inner ring, and the first sealing structure is provided with three sealing lips, wherein two sealing lips abut against the outer diameter of the inner ring, and the other sealing lip abuts against the gear ring.

Among the above-mentioned technical scheme, directly install first seal structure on the bearing, circle in installation shell and the correspondence and be provided with the platform that supplies the installation of first seal structure, first seal structure all is interference fit with the inner circle that the installation shell corresponds, so the platform need carry out abrasive machining, guarantee surface accuracy, satisfy and use with the cooperation of sealing member, first seal structure belongs to oil blanket class seal structure, mainly play dustproof, the effect of the inside oil of vapor and system, avoid oil to get into the bearing, dilute the inside grease of bearing, it is bad to make the early lubrication of bearing.

As a further arrangement of the utility model, a second sealing structure is arranged at one end of the mounting shell far away from the gear ring, the second sealing structure is positioned between the mounting shell and the inner ring far away from the gear ring and forms an interference fit with the mounting shell and the inner ring, and the second sealing structure is provided with two sealing lips which abut against the outer diameter of the inner ring.

Among the above-mentioned technical scheme, directly install second seal structure on the bearing, circle in installation shell and the correspondence and be provided with the platform that supplies the installation of second seal structure, second seal structure and installation shell and the inner circle that corresponds all are interference fit, so the platform need carry out abrasive machining, guarantees the surface precision, satisfies the cooperation use with the sealing member, and second seal structure mainly plays dustproof and waterproof vapour's effect.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a structural cross-sectional view of an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1.

Detailed Description

The specific embodiment of the utility model is shown in fig. 1-2, and the maintenance-free hub bearing comprises a shell, an outer ring, an inner ring 1, a rolling body 2 and a retainer 3, wherein the shell and the outer ring are integrally arranged to form an installation shell 4, two outer raceways 41 are symmetrically arranged on the inner diameter of the installation shell 4, the inner ring 1 is symmetrically arranged, the inner ring 1 is provided with two inner raceways 11 which are matched with the outer raceways 41 to form a rolling body 2 to accommodate the rolling body, and the two inner rings 1 are connected through a snap spring 5. The shell and the outer ring are made into a whole, so that the occupied space in a hub system is reduced, the structure of the system is more compact and stable, and the installation and the use of customers are facilitated.

Be provided with ring flange 42 on the external diameter of above-mentioned installation shell 4, the one end of installation shell 4 is provided with mounting hole 43, and the other end is provided with ring gear 6, a pot head of ring gear 6 is established on installation shell 4 and constitutes interference fit with installation shell 4, the other end of ring gear 6 is provided with along its circumference even interval distribution's tooth 61. The ring flange 42 is also the structure of an organic whole setting with installation shell 4, and the installation is more steady, is connected the ring flange 42 of installation shell 4 with the wheel through bolt 421, carries out signal transmission through ring gear 6, and ring gear 6 is interference fit with installation shell 4, and the fitting surface need carry out abrasive machining for signal transmission is more steady.

The inner diameter of the end part where the two inner rings 1 are connected is provided with a clamp spring groove 12, and the clamp spring 5 is clamped in the two clamp spring grooves 12 to realize the fixed connection of the two inner rings 1. The arrangement of the clamp spring groove 12 facilitates clamping of the clamp spring 5, the two inner rings 1 are fixed and combined into a whole, and the clamp spring 5 is mainly used for connecting the two inner rings 1 to prevent the two inner rings 1 from falling off when the bearing is pressed into the sealing structure, so that normal press mounting of the sealing structure is guaranteed.

The clamp spring grooves 12 are annular, and the groove wall 121 of one side of each clamp spring groove 12 close to the middle is lower than the groove wall 122 of the other side far from the middle. The clamp spring 5 can be smoothly clamped, damage is avoided, and stability of the structure is guaranteed.

The end of the mounting housing 4 facing the ring gear 6 is provided with a first sealing structure 44, the first sealing structure 44 is located between the mounting housing 4 and the inner ring 1 close to the ring gear 6 and forms an interference fit with the two, the first sealing structure 44 is provided with three sealing lips 441, two of the sealing lips 441 abut on the outer diameter of the inner ring 1, and the other sealing lip 441 abuts on the ring gear 6. Directly install first seal structure 44 on the bearing, be provided with the platform that supplies first seal structure 44 to install on installation shell 4 and the inner circle 1 that corresponds, first seal structure 44 all is interference fit with installation shell 4 and the inner circle 1 that corresponds, the event platform need carry out abrasive machining, guarantee surface accuracy, satisfy and use with the cooperation of sealing member, first seal structure 44 belongs to oil blanket class seal structure, mainly play dustproof, the effect of the inside oil of vapor and system, avoid oil to get into the bearing, dilute the inside grease of bearing, make the bearing lubricate badly early.

The end of the mounting shell 4 far away from the gear ring 6 is provided with a second sealing structure 45, the second sealing structure 45 is positioned between the mounting shell 4 and the inner ring 1 far away from the gear ring 6 and forms an interference fit with the two, the second sealing structure 45 is provided with two sealing lips 451, and the two sealing lips 451 abut on the outer diameter of the inner ring 1. Directly install second seal structure 45 on the bearing, be provided with the platform that supplies second seal structure 45 to install on installation shell 4 and the inner circle 1 that corresponds, second seal structure 45 all is interference fit with installation shell 4 and the inner circle 1 that corresponds, so the platform need carry out abrasive machining, guarantees the surface accuracy, satisfies the cooperation use with the sealing member, and second seal structure 45 mainly plays dustproof and waterproof vapour's effect.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.

Claims

1. The utility model provides a non-maintaining wheel hub bearing, includes casing, outer lane, inner circle, rolling element and holder, its characterized in that: the casing sets up with outer lane an organic whole and forms the installation shell, the internal diameter of installation shell is gone up the symmetry and is provided with two outer raceways, the inner circle is two that the symmetry set up, be provided with on the inner circle and form the rolling interior raceway of confession rolling element holding with the cooperation of outer raceway, two the inner circle passes through the jump ring and connects.

2. Maintenance-free hub bearing according to claim 1, wherein: the installation shell is characterized in that a flange plate is arranged on the outer diameter of the installation shell, one end of the installation shell is provided with an installation hole, the other end of the installation shell is provided with a gear ring, one end of the gear ring is sleeved on the installation shell and forms interference fit with the installation shell, and the other end of the gear ring is provided with teeth which are distributed along the circumferential direction at intervals.

3. Maintenance-free hub bearing according to claim 1 or 2, wherein: and the inner diameter of the end part connected with the two inner rings is provided with a clamp spring groove, and the clamp spring is clamped in the two clamp spring grooves to realize the fixed connection of the two inner rings.

4. Maintenance-free hub bearing according to claim 3, wherein: the clamp spring grooves are annular, and the groove wall of one side, close to the middle, of each clamp spring groove is lower than the groove wall of one side, far away from the middle, of each clamp spring groove.

5. Maintenance-free hub bearing according to claim 2, wherein: the one end of installation shell orientation ring gear is provided with first seal structure, first seal structure is located the installation shell and is close to between the inner circle of ring gear and constitutes interference fit with both, first seal structure has three seal lip, and wherein two seal lip butt are on the external diameter of inner circle, and another seal lip butt is on the ring gear.

6. Maintenance-free hub bearing according to claim 2 or 5, wherein: the one end that the ring gear was kept away from to the installation shell is provided with second seal structure, second seal structure is located the installation shell and keeps away from between the inner circle of ring gear and constitutes interference fit with the two, second seal structure has two seal lips, two the seal lip butt is on the external diameter of inner circle.