RU43046U1 - SPHERICAL BEARING - Google Patents

Abstract

Spherical bearing comprising a housing, a finger with a spherical head, an insert covering a spherical head and representing a truncated shell with an inner spherical and external cylindrical turning into conical surfaces with through cuts located from the truncated end plane to the equatorial plane and coinciding with them in the direction of the internal meridian grooves, characterized in that the insert is provided with a boss with a through hole, an annular groove and radial the basics on the end plane, and on the inner surface of the housing, a recess is made that responds to the boss.

Description

The invention relates to mechanical engineering, in particular to ball bearings of a car suspension.

Known ball joint (utility model No. 9030 of the Russian Federation, IPC F 16 C 11/06, published January 16, 1999), comprising a housing with a cartridge sleeve, in which a ball pin and an anti-friction liner are installed. The cartridge of the anti-friction liner is made spherical., and the anti-friction liner has a part corresponding to the spherical shape of the cage and has an equal thickness over the entire surface. The disadvantage of this design is the unevenness of the pressing force, and as a consequence, a large variation in the rolling and rotation moments, i.e. the ball finger will rotate very tightly, or very easily. This will lead to premature wear of the ball joint.

Known spherical hinge (RF patent No. 2029895, IPC F 16 C 11/06, published 02.27.1995 g), comprising a housing with an annular step on the inner side surface, a finger with a ball head, two elastic inserts and a fixing element. The first insert is placed on the ball head from the side of the finger. The second elastic insert has the shape of a hemisphere, and is placed on the ball head inside the first insert, resting on the end face of its annular step, and in contact with the locking element. On the outer surface of the second liner there are ring grooves made concentrically in planes located perpendicular to the axis of the finger. The disadvantage of this spherical hinge is the lack of fit and lack of lubrication, since the concentric grooves at the junctions of the ribs with the locking element do not communicate with each other. This leads to premature wear of the ball joint.

The closest analogue is a swivel (patent No. 2112895 RF IPC F 16 C 11/06, published June 10, 1998) containing a housing, a finger with a spherical head, covering the spherical head of the liner with through grooves open from the side of its end. The threaded cap is made with a recess on the inner surface, while the recess is made in the form of a truncated cone. The housing is made with internal cylindrical and conical surfaces,

a threaded large hole at one end and a smaller hole at the other, the inner conical surface of the cone being made at its smaller hole. The through grooves of the liner are made radial. On the outer surface of the liner between the conical surfaces is made a cylindrical belt in contact with the inner surface of the housing. In the upper part of the cylindrical girdle of the liner there is an annular groove. The disadvantage of the swivel is the increased wear during operation, since this design does not provide constant lubrication conditions during operation due to the absence of cavities for lubrication over the entire spherical surface of the liner. In addition, wear products arising during the operation of the ball joint have no outlet and accumulate on the friction surfaces.

The task to which this technical solution is directed is to ensure a sufficient amount of lubricant during operation and to reduce the concentration of wear products in the lubricant.

The problem is solved due to the fact that the ball bearing includes a housing, a finger with a spherical head and an insert covering the spherical head. The liner is a truncated shell with an inner spherical and external cylindrical, turning into conical surfaces, with through slots located from the truncated end plane to the equatorial plane and the inner meridial grooves coinciding with them in the direction, and the liner is equipped with a boss with a through hole, an annular groove and radial grooves communicating with it on the end plane, and on the inner surface of the housing, a recess is made that responds to the boss.

The utility model is represented by drawings, in which Fig. 1 shows the proposed ball bearing, general view, in Fig. 2 - insert, general view, in Fig. 3 - insert, top view.

Ball bearing (figure 1) contains a housing (1), in the socket of which is a finger (2) with a spherical head. Between the inner surface of the housing socket (1) and the finger (2) is an insert (3) made of an elastoplastic material. The liner 3 (figure 2) has the shape of a truncated shell, with end surfaces 4 (truncated) and 5 (opposite truncated).

The inner surface 6 of the liner 3 is spherical. The outer surface 7 of the liner 3 from the side of the end surface 4 (truncated) has a conical shape. The central part 8 of the liner 3 has a cylindrical supporting surface that passes into a conical surface 9. From the truncated end surface 4 of the liner 3, through slots 10 are made, extending beyond the equatorial plane 11 of the liner 3. On the inner spherical surface 6 of the liner 3 there are meridian grooves 12, which are a continuation through slots 10. On the extension of the outer conical surface 9 of the insert 3, a boss 13 is made, in which there is a central through hole 14, an annular groove 15 (Fig. 3), and a radial grooves 16. The central through hole 14 communicates with the meridian grooves 12. The meridian grooves 12, the central through hole 14, the annular groove 15 and the radial grooves 16 form a single lubrication supply system. A cylindrical recess 17 is made in the housing 1 to accommodate the boss 13. The location of the central through hole 14, the groove 15 and the grooves 16 allows the grease to flow from the outer surface of the finger 2 with a spherical head onto the outer conical surface 9 of the liner 3 and the inner surface of the housing. 1.

To prevent dirt from entering the ball joint, a protective cover 19 is installed, which is fixed by a ring 20 (Fig. 1).

When assembling the ball joint, grease is applied first to the inner spherical surface 6 of the liner 3, then the liner 3 is put on the finger 2 with the spherical head. The assembled finger 2 with the liner 3 is placed in the housing 1, and a part of the cylindrical wall 18 of the housing 1 is pressed onto the conical surface 7 liner 3. This allows you to provide the required pulling force of the finger 2 from the housing 1 and the required moments of rotation and rolling of the finger 2. Assembly is completed by installing a protective cover 19, the ring 20 and the sleeve 21.

The proposed design of the ball joint with a single lubrication system allows for a constant supply of grease during the entire life of the product. The circulation of the lubricant can significantly reduce the concentration of wear products in the lubricant.

Sources of information.

1. Utility model No. 9030 of the Russian Federation, IPC F 16 C 11/06, published January 16, 1999.

2. Patent No. 2029895 of the Russian Federation, IPC F 16 C 11/06, published on February 27, 1995.

3. Patent No. 2112895 of the Russian Federation IPC F 16 C 11/06, published on June 10, 1998.

Claims (1)

Spherical bearing comprising a housing, a finger with a spherical head, an insert covering a spherical head and representing a truncated shell with an inner spherical and external cylindrical turning into conical surfaces with through cuts located from the truncated end plane to the equatorial plane and coinciding with them in the direction of the internal meridian grooves, characterized in that the insert is provided with a boss with a through hole, an annular groove and radial the basics on the end plane, and on the inner surface of the housing, a recess is made that responds to the boss.