CN211449363U

CN211449363U - High-stability multifunctional composite bearing

Info

Publication number: CN211449363U
Application number: CN201922272238.0U
Authority: CN
Inventors: 奚志强; 戴忠林
Original assignee: Wuxi Haifeng & Hailin Precision Bearing Co ltd
Current assignee: Wuxi Haifeng & Hailin Precision Bearing Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-08
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a multi-functional composite bearing of high stability, include: an inner raceway is arranged on the inner wall surface of the bearing outer ring and comprises a middle arc wall surface for coating rolling steel balls and horizontal wall surfaces of which the two sides are connected with the arc wall surface; the end part of the horizontal wall surface with the larger inner diameter is provided with a mounting groove for clamping a bearing sealing ring, and the inner end of the bearing sealing ring is abutted against the excircle of the bearing inner ring; and an annular bulge is arranged at one end, far away from the mounting groove, of the bearing retainer, and the height of the annular bulge is matched with the horizontal wall surface with the smaller inner diameter. The utility model discloses an interior raceway improves assembly efficiency with the joint structure greatly reduced assembly degree of difficulty of sealing washer, simultaneously through the bellied structure of annular on the bearing holder, under the prerequisite of guaranteeing lightweight, effectively improves bearing leakproofness, prolongs the life of bearing.

Description

High-stability multifunctional composite bearing

Technical Field

The invention relates to a high-stability multifunctional composite bearing, and belongs to the technical field of swing rod bearing structure design.

Background

The bearing is a component for fixing and reducing the load friction coefficient in the mechanical transmission process, and mainly has the function of supporting the mechanical rotating body so as to reduce the mechanical load friction coefficient of the equipment in the transmission process. In electric tools such as electric hammers and reciprocating saws, in order to achieve a lightweight and portable design, some mechanical transmission mechanisms with complex structures and heavy weight must be omitted, and in order to satisfy the use function, the use function of the bearing can only be expanded, and the bearing is required to satisfy the inherent support and rotation functions and also to be accompanied by an axial swinging function. The traditional swing rod bearing structure has a complex assembly process, and good sealing is difficult to realize, so that the service life of the swing rod bearing structure is greatly reduced.

Based on the above requirements, the technical personnel in the field are dedicated to developing a high-stability multifunctional composite bearing, the assembly difficulty is greatly reduced through the clamping structure of the inner rolling way and the sealing ring, the assembly efficiency is improved, meanwhile, the sealing performance of the bearing is effectively improved through the annular convex structure on the bearing retainer on the premise of ensuring light weight, and the service life of the bearing is prolonged.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the high-stability multifunctional composite bearing which has the characteristics of simple structure, lower cost, high sealing efficiency and the like, effectively prolongs the service life of the bearing, greatly reduces the assembly difficulty through the clamping structure of the inner raceway and the sealing ring, and improves the assembly efficiency.

The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:

a high-stability multifunctional composite bearing comprises a bearing inner ring sleeved on a rotating shaft, a bearing outer ring integrally connected with a swing rod structure, rolling steel balls arranged between the bearing inner ring and the bearing outer ring, a bearing retainer and a sealing ring;

the outer circle of the bearing inner ring is provided with an outer raceway used for containing rolling steel balls, and the outer raceway is of an annular groove structure which is obliquely arranged;

an inner raceway is arranged on the inner wall surface of the bearing outer ring and comprises a middle arc wall surface for coating rolling steel balls and horizontal wall surfaces of which the two sides are connected with the arc wall surface; the end part of the horizontal wall surface with the larger inner diameter is provided with a mounting groove for clamping a bearing sealing ring, and the inner end of the bearing sealing ring is abutted against the excircle of the bearing inner ring;

the bearing retainer is of a circular ring structure, and a plurality of circular holes for containing rolling steel balls are uniformly distributed on the bearing retainer along the circumference; and an annular bulge is arranged at one end, far away from the mounting groove, of the bearing retainer, and the height of the annular bulge is matched with the horizontal wall surface with the smaller inner diameter.

Furthermore, the inner end of the bearing seal ring is a double-lip seal structure, so that the sealing performance is ensured, and meanwhile, the abrasion is effectively reduced.

Further, the outer end of the bearing seal ring is of a protruding structure, and is matched with the installation groove in an embedded mode, on one hand, the sealing performance of the bearing is guaranteed, and on the other hand, the clamping connection between the bearing inner ring and the bearing outer ring is achieved.

Furthermore, a rigid support ring is arranged in the bearing seal ring to form rigid support in the seal ring, so that the connection stability of the seal ring is ensured.

Furthermore, the included angle between the central axis of the outer raceway and the central axis of the bearing inner ring is within 10-30 degrees.

Furthermore, the bearing retainer is made of cloth-sandwiched bakelite or PEEK (polyether-ether-ketone) materials, so that the bearing retainer is light in weight and can better meet the requirements of high speed and high strength.

Has the advantages that: compared with the prior art, the high-stability multifunctional composite bearing provided by the invention has the following advantages: 1. the structure is simple, the cost is low, the assembly difficulty is greatly reduced through the clamping structure of the inner raceway and the sealing ring, the assembly efficiency is improved, and the production cost is reduced; 2. through the bellied structure of annular on the bearing holder, under the prerequisite of guaranteeing the lightweight, effectively improve the bearing leakproofness, realize dustproof leak protection oil, prolong the life of bearing.

Drawings

FIG. 1 is a schematic structural diagram of a high-stability multifunctional composite bearing according to the present invention;

FIG. 2 is a schematic view of the structure of the bearing cage of the present invention;

the figure includes: 1. the bearing comprises a bearing inner ring, 2, a bearing outer ring, 3, rolling steel balls, 4, a bearing retainer, 5, a bearing seal ring, 6, an outer raceway, 7, an inner raceway, 8, a mounting groove, 9, a round hole, 10, an annular bulge, 11 and a swing rod structure.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1, the high-stability multifunctional composite bearing comprises a bearing inner ring 1 sleeved on a rotating shaft, a bearing outer ring 2 integrally connected with a swing rod structure 11, and rolling steel balls 3, a bearing retainer 4 and a bearing seal ring 5 arranged between the bearing inner ring 1 and the bearing outer ring 2;

the outer circle of the bearing inner ring 1 is provided with an outer raceway 6 for containing rolling steel balls 3, and the outer raceway 6 is of an annular groove structure which is obliquely arranged;

an inner raceway 7 is arranged on the inner wall surface of the bearing outer ring 2, and the inner raceway 7 comprises a middle arc wall surface for coating the rolling steel balls 3 and horizontal wall surfaces of which two sides are connected with the arc wall surface; the end part of the horizontal wall surface with the larger inner diameter is provided with a mounting groove 8 for clamping the bearing seal ring 5, and the inner end of the bearing seal ring 5 is abutted against the excircle of the bearing inner ring 1;

as shown in fig. 2, the bearing retainer 4 is of a circular ring structure, and a plurality of circular holes 9 for accommodating the rolling steel balls 3 are uniformly distributed on the bearing retainer 4 along the circumference; and an annular bulge 10 is arranged at one end, far away from the mounting groove 8, of the bearing retainer 4, and the height of the annular bulge 10 is matched with the horizontal wall surface with the smaller inner diameter.

In this embodiment, the inner end of the bearing seal ring 5 is a double-lip seal structure, so that the sealing performance is ensured, and meanwhile, the abrasion is effectively reduced.

In this embodiment, bearing seal 5's outer end is protruding structure, and constitutes the embedding cooperation with mounting groove 8, is used for guaranteeing the leakproofness of bearing on the one hand, and on the other hand has realized the joint cooperation of bearing inner race and bearing outer lane.

In this embodiment, a rigid support ring is arranged in the bearing seal ring 5 to form a rigid support for the interior of the seal ring, so as to ensure the connection stability of the seal ring.

In the embodiment, the included angle between the central axis of the outer raceway 6 and the central axis of the bearing inner ring 1 is within 10-30 degrees.

In this embodiment, the bearing retainer 4 is made of a cloth-sandwiched bakelite or PEEK material, so that the bearing retainer is light in weight and can better meet the requirements of high speed and high strength.

The specific embodiment of the invention is as follows:

during installation, firstly, a bearing retainer 4 and rolling steel balls 3 are installed on an outer raceway 6 of a bearing inner ring 1, movable connection among the rolling steel balls 3 is realized through the bearing retainer 4, and then a bearing outer ring 2 is sleeved outside the bearing retainer 4 and the rolling steel balls 3; and finally, installing a bearing seal ring 5, embedding the outer end of the bearing seal ring 5 into the installation groove 8, and then enabling the inner end of the bearing seal ring 5 to be abutted against the outer circle of the bearing inner ring 1 to complete the installation of the high-stability multifunctional composite bearing.

According to the high-stability multifunctional composite bearing, one end of the high-stability multifunctional composite bearing is well sealed and clamped and fixed through the sealing ring, and the other end of the high-stability multifunctional composite bearing passes through the annular bulge structure on the retainer, so that the sealing performance of the bearing is effectively improved and the service life of the bearing is prolonged on the premise of ensuring light weight.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. A high-stability multifunctional composite bearing is characterized by comprising a bearing inner ring (1) sleeved on a rotating shaft, a bearing outer ring (2) integrally connected with a swing rod structure (11), rolling steel balls (3) arranged between the bearing inner ring (1) and the bearing outer ring (2), a bearing retainer (4) and a bearing sealing ring (5);

the outer circle of the bearing inner ring (1) is provided with an outer raceway (6) for containing rolling steel balls (3), and the outer raceway (6) is of an annular groove structure which is obliquely arranged;

an inner raceway (7) is arranged on the inner wall surface of the bearing outer ring (2), the inner raceway (7) comprises a middle arc wall surface for coating the rolling steel balls (3) and a horizontal wall surface of which two sides are connected with the arc wall surface, the inner diameter of the horizontal wall surface on one side is larger than that of the horizontal wall surface on the other side, an installation groove (8) for clamping the bearing seal ring (5) is arranged at the end part of the horizontal wall surface on the side with the larger inner diameter, and the inner end of the bearing seal ring (5) is abutted to the excircle of the bearing inner ring (1);

the bearing retainer (4) is of a circular ring structure, and a plurality of circular holes (9) for accommodating the rolling steel balls (3) are uniformly distributed on the bearing retainer (4) along the circumference; and an annular bulge (10) is arranged at one end, far away from the mounting groove (8), of the bearing retainer (4), and the height of the annular bulge (10) is matched with the horizontal wall surface of the side with the smaller inner diameter.

2. The multifunctional composite bearing with high stability as claimed in claim 1, wherein the inner end of the bearing seal ring (5) is a double-lip seal structure.

3. The multifunctional composite bearing with high stability as claimed in claim 1, wherein the outer end of the bearing seal ring (5) is of a convex structure and forms an embedded fit with the mounting groove (8).

4. A high stability multifunctional composite bearing according to claim 1, characterized in that a rigid support ring is arranged inside the bearing seal ring (5).

5. A high stability multifunctional composite bearing according to claim 1, characterized in that the angle between the central axis of the outer raceway (6) and the central axis of the inner bearing ring (1) is within 10 ° -30 °.

6. The multifunctional composite bearing with high stability of claim 1, wherein the bearing retainer (4) is made of bakelite or PEEK.