CN218294230U

CN218294230U - Ball bearing structure

Info

Publication number: CN218294230U
Application number: CN202222702210.8U
Authority: CN
Inventors: 杨景显
Original assignee: Yantai Ounuo Electronics Co ltd
Current assignee: Yantai Ounuo Electronics Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-01-13
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a ball bearing structure, which comprises a shaft outer ring, a shaft inner ring and a fixing frame, wherein the shaft outer ring is composed of an upper layer outer ring cover and a lower layer outer ring cover; the shaft inner ring is a shaft ring, and the circumferential outer wall of the shaft ring is provided with a closed arc-shaped groove; clamping grooves are formed in the circumferential outer wall of the fixing frame in an annular array mode, and balls are arranged inside the clamping grooves; the bottom surface of the upper layer outer ring cover is fixedly connected with a hemisphere; the top surface of the lower layer outer ring cover is provided with a hemisphere groove matched with the hemisphere body. The utility model improves the connection firmness of the upper layer outer ring cover and the lower layer outer ring cover, and after the shaft sleeve is prevented from being worn, the upper layer outer ring cover and the lower layer outer ring cover are scattered; because the ball is in the within range of draw-in groove again to its outer wall is restricted by the inner wall of the arc wall of collar, upper strata outer lane lid and lower layer outer lane lid respectively, when not hindering the ball motion, also can restrict the home range of ball, prevents effectively that it from breaking away from the mount, prolongs the life of bearing.

Description

Ball bearing structure

Technical Field

The utility model relates to a bearing technical field especially relates to a ball bearing structure.

Background

The bearing is mainly used for supporting the mechanical rotating body, reducing the friction coefficient in the movement process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body, and comprises the categories of sliding bearings, joint bearings, rolling bearings and the like. Among them, the rolling bearing has the widest application, and it uses rolling friction, usually a mechanical base member composed of a bearing outer ring, an inner ring, balls, a retainer and an oil seal, which are composed of a revolving body, and spherical alloy steel balls are installed between the inner steel ring and the outer steel ring, so as to reduce the friction force in the power transmission process and improve the transmission efficiency of the mechanical power in a rolling manner.

At present, because the bearing assembly needs to be pressed in through interference fit, so after long-time use, if the axle sleeve appears wearing and tearing, easily cause the bearing to scatter, lead to the ball to break away from the holder to make the unable normal rotation of bearing, cause the pulley line to rub off. Based on this, we propose a ball bearing structure that prevents the balls from separating from the cage, thereby improving the service life of the bearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a ball bearing structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a ball bearing structure comprises a shaft outer ring, a shaft inner ring and a fixing frame, wherein the shaft outer ring is composed of an upper layer outer ring cover and a lower layer outer ring cover; the shaft inner ring is a shaft ring, and the circumferential outer wall of the shaft ring is provided with a closed arc-shaped groove; clamping grooves are formed in the circumferential outer wall of the fixing frame in an annular array mode, and balls are arranged inside the clamping grooves;

the bottom surface of the upper layer outer ring cover is fixedly connected with a hemisphere; the top surface of the lower layer outer ring cover is provided with a hemisphere groove matched with the hemisphere body.

As the utility model discloses further scheme again: the top and the bottom of shaft collar all are provided with integrated into one piece's protruding circle.

As a further aspect of the present invention: the inside of the fixing frame is hollow.

As a further aspect of the present invention: the circumference inner wall of draw-in groove is provided with the oil outlet.

As a further aspect of the present invention: and a ferrule is fixedly connected to the circumferential outer wall of the shaft outer ring.

As a further aspect of the present invention: the inner walls of the circumferences of the top end and the bottom end of the ferrule are fixedly connected with sealing rings.

As a further aspect of the present invention: the outer circumferential walls of the two convex rings are respectively matched with the inner circumferential walls of the axial holes of the upper outer ring cover and the lower outer ring cover.

As a further aspect of the present invention: the arc-shaped grooves are matched with the balls.

Compared with the prior art, the utility model provides a ball bearing structure possesses following beneficial effect:

1. according to the ball bearing structure, the arc-shaped groove, the hemispheroid, the hemispherical groove and the like are arranged, and the hemispheroid after the sealing cover is just pressed into the corresponding hemispherical groove, so that the connection firmness of the upper layer outer ring cover and the lower layer outer ring cover can be improved, and the condition that the shaft sleeve is scattered after being worn is avoided; because the ball is in the range of the clamping groove, and the outer wall of the ball is limited by the arc-shaped groove of the shaft ring, the inner wall surfaces of the upper layer outer ring cover and the lower layer outer ring cover respectively, the moving range of the ball can be limited while the movement of the ball is not hindered, the ball is effectively prevented from being separated from the fixed frame, and the service life of the bearing is prolonged.

2. This ball bearing structure, it is downthehole to imbed the axle center that the lower outer lane was covered with the protruding circle of axle ring through the bottom for basic positioning, then locate the axle ring with the draw-in groove cover outside, make its bottom face laminate mutually with the top face of lower outer lane lid, fill in corresponding draw-in groove in proper order with a plurality of balls according to a one-to-one mode this moment again, last again with upper outer lane lid cover on lower outer lane lid terminal surface and the involution good can, the equipment is convenient.

3. This ball bearing structure, the outer wall reinforcement lasso of upper outer ring cap and lower outer ring cap to can hide the blockade to laminating gap department between them, from gap infiltration in order to prevent dust etc. thereby influence the life of bearing, prevent among the external environment that the dust gets into the physical property injury that causes the bearing after the bearing.

Drawings

Fig. 1 is an exploded schematic view of a ball bearing structure according to the present invention;

fig. 2 is a schematic view of an overall structure of a ball bearing structure according to the present invention;

fig. 3 is a schematic structural view of a fixing frame of a ball bearing structure according to the present invention;

fig. 4 is a schematic structural diagram of an embodiment 2 of a ball bearing structure according to the present invention;

fig. 5 is a schematic structural diagram of an embodiment 3 of a ball bearing structure according to the present invention;

fig. 6 is a schematic structural view of embodiment 4 of a ball bearing structure according to the present invention.

In the figure: 1-upper layer outer ring cover, 2-lower layer outer ring cover, 3-fixing frame, 301-clamping groove, 4-shaft ring, 401-convex ring, 402-arc groove, 5-rolling ball, 6-hemisphere, 7-annular groove, 8-hemisphere groove, 9-oil outlet, 10-ferrule, 11-sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

A ball bearing structure, in order to guarantee the use firmness of the ball 5, as shown in figure 1-3, comprises a shaft outer ring, a shaft inner ring and a fixing frame 3, wherein the shaft outer ring is composed of an upper layer outer ring cover 1 and a lower layer outer ring cover 2 which have the same structure, and the bearing is convenient to disassemble and assemble; the shaft inner ring is a shaft ring 4, the top end and the bottom end of the shaft ring 4 are respectively provided with an integrally formed convex ring 401, and the circumferential outer walls of the two convex rings 401 are respectively matched with the circumferential inner walls of the shaft center holes of the upper outer ring cover 1 and the lower outer ring cover 2;

preferably, the upper end and the lower end of the shaft ring 4 are abutted against one opposite side surface of the upper outer ring cover 1 and the lower outer ring cover 2, and the whole length of the shaft ring 4 is consistent with that of the shaft outer ring; arrange axle ring 4 in between upper outer lane lid 1 and the lower floor's outer lane lid 2 butt fixed, prevent effectively that the displacement from appearing during the use of axle ring 4.

Further, a plurality of clamping grooves 301 are formed in the circumferential outer wall of the fixing frame 3 in an annular array manner, and balls 5 are placed in the clamping grooves 301;

preferably, the diameter of the fixing frame 3 is larger than that of the shaft ring 4;

furthermore, the outer wall of the circumference of the shaft ring 4 is provided with a closed arc-shaped groove 402, so that the outer wall of the shaft ring 4 forms a waist-shaped cylinder, and the arc-shaped groove 402 is matched with the balls 5; during the equipment, it is downthehole with the axle center on the axle ring 4 imbeds lower floor's outer lane lid 2 through the protruding circle 401 of bottom earlier, be used for the basis location, then locate the axle ring 4 with draw-in groove 301 cover outside, make its bottom face laminate mutually with the top face of lower floor's outer lane lid 2, at this moment fill in corresponding draw-in groove 301 according to a one-to-one mode in proper order with a plurality of balls 5 again, cover upper strata outer lane lid 1 on lower floor's outer lane lid 2 terminal surface and the involution can at last again, because ball 5 is located the within range of draw-in groove 301, and its outer wall receives the arc wall 402 of axle ring 4 respectively, the internal face restriction of upper strata outer lane lid 1 and lower floor's outer lane lid 2, when not hindering ball 5 motion, also can restrict ball 5's home range, prevent effectively that it breaks away from mount 3.

The working principle is as follows: during the equipment, it is downthehole with the axle center on the outer lane lid 2 of the protruding circle 401 embedding lower floor of shaft collar 4 through the bottom earlier for basic location, then locate shaft collar 4 with draw-in groove 301 cover outside, make its bottom face laminate mutually with the top face of lower floor's outer lane lid 2, fill in corresponding draw-in groove 301 in proper order according to a one-to-one mode with a plurality of balls 5 this moment again, at last cover upper strata outer lane lid 1 on lower floor's outer lane lid 2 terminal surfaces again and the involution can. When the pulley is in work, after the shaft ring 4 is fixed on the external pulley bracket, the shaft outer ring rotates under the action of external force, and the balls 5 rotate under the driving of the shaft outer ring.

Example 2

A ball bearing structure, as shown in figure 4, in order to improve the connection tightness of an upper layer outer ring cover 1 and a lower layer outer ring cover 2; the present embodiment is modified from embodiment 1 in the following way: the bottom surface of the upper layer outer ring cover 1 is fixedly connected with a plurality of hemispheroids 6; the top surface of the lower layer outer ring cover 2 is provided with semispherical grooves 8 which are the same in number as the semispherical bodies 6 and correspond to the distribution positions, and the semispherical bodies 6 are matched with the semispherical grooves 8; when enclosing upper outer lane lid 1 and lower floor's outer lane lid 2, hemisphere 6 just in time impresses corresponding hemisphere inslot 8 to can improve the firm in connection nature of upper outer lane lid 1 and lower floor's outer lane lid 2, avoid the axle sleeve wearing and tearing back, the condition of scattering appears in both.

The working principle is as follows: when the upper outer ring cover 1 and the lower outer ring cover 2 are sealed, the hemispheroid 6 is just pressed into the corresponding hemispherical groove 8, so that the connection firmness of the upper outer ring cover 1 and the lower outer ring cover 2 can be improved.

Example 3

A ball bearing structure, as shown in fig. 5, for oiling/greasing a ball 5; the present embodiment is modified from embodiment 1 in the following way: the interior of the fixed frame 3 is hollow, and lubricating grease/oil is filled in the interior of the fixed frame 3; a plurality of oil outlet holes 9 are formed in the circumferential inner walls of the clamping grooves 301; the inside of the fixed frame 3 is filled with grease/oil, and the grease/liquid can seep out from the oil outlet hole 9 due to friction heat during the operation and rotation of the ball 5, so that the surface of the rotating ball 5 can be lubricated to prolong the service life of the ball.

The working principle is as follows: the inside of the fixed frame 3 is filled with grease/oil, and the grease/oil is oozed out from the oil outlet hole 9 by friction heat during the operation and rotation of the ball 5, so that the surface of the ball 5 in rotation can be lubricated.

Example 4

A ball bearing structure, as shown in fig. 6, for preventing dust from penetrating into the inside of the bearing; the present embodiment is modified from embodiment 1 as follows: the outer wall of the circumference of the shaft outer ring is fixedly connected with a ferrule 10, and the inner walls of the circumferences of the ferrule 10 close to the top end and the bottom end are welded with sealing rings 11 for improving the connection tightness of the ferrule 10 and the shaft outer ring; the outer walls of the upper layer outer ring cover 1 and the lower layer outer ring cover 2 are reinforced with the ferrules 10, so that the joint gap between the upper layer outer ring cover and the lower layer outer ring cover can be covered and sealed.

The working principle is as follows: the outer wall of upper outer lane lid 1 and lower floor's outer lane lid 2 consolidates lass 10 to can hide the blockade to laminating gap department between them, from gap infiltration, thereby influence the life of bearing, prevent that dust from getting into the physics nature injury that the bearing caused behind the bearing among the external environment.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A ball bearing structure comprises a shaft outer ring, a shaft inner ring and a fixing frame (3), and is characterized in that the shaft outer ring is composed of an upper layer outer ring cover (1) and a lower layer outer ring cover (2); the shaft inner ring is a shaft ring (4), and the outer circumferential wall of the shaft ring (4) is provided with a closed arc-shaped groove (402); the circumferential outer wall of the fixed frame (3) is provided with clamping grooves (301) in an annular array manner, and balls (5) are arranged in the clamping grooves (301);

the bottom surface of the upper layer outer ring cover (1) is fixedly connected with a hemisphere (6); the top surface of the lower layer outer ring cover (2) is provided with a hemisphere groove (8) matched with the hemisphere (6).

2. A ball bearing arrangement according to claim 1, characterized in that the top and bottom ends of the collar (4) are provided with an integrally formed bead (401).

3. A ball bearing arrangement according to claim 1, characterized in that the interior of the holder (3) is hollow.

4. A ball bearing arrangement according to claim 3, characterized in that the circumferential inner wall of the clamping groove (301) is provided with oil outlet holes (9).

5. A ball bearing arrangement according to claim 1, wherein a ferrule (10) is fixedly attached to the circumferential outer wall of the outer race.

6. A ball bearing arrangement according to claim 5, wherein the inner circumferential walls of the collar (10) near the top and bottom ends are fixedly connected with sealing rings (11).

7. A ball bearing arrangement according to claim 2, wherein the two said collars (401) have circumferential outer walls which are adapted to the circumferential inner walls of the axial bores of the upper outer race cover (1) and the lower outer race cover (2), respectively.

8. A ball bearing arrangement according to claim 7, characterised in that the arc-shaped grooves (402) are adapted to the balls (5).