CN212928495U - Loss-reducing assembly bearing structure - Google Patents

Abstract

The utility model relates to a reduce and decrease assembly bearing structure, including outer lane, inner circle and rolling element, the annular distribution has two or more than two recesses on the outside periphery of outer lane, be equipped with annular elasticity combined material on the recess, this elasticity combined material's size corresponds with the recess, and the external diameter exceeds outer lane outside periphery 0.1-0.4mm when elasticity combined material installs in the recess, the external diameter tolerance of outer lane is-0.01-0.07 mm. The utility model discloses when avoiding the bearing to impress the installing component (like the bearing frame) and appearing the deviation, the bearing is crowded production with the installing component and is out of shape, better assurance bearing or cause the damage of different degrees and influence complex precision with the installing component.

Description

Loss-reducing assembly bearing structure

Technical Field

The utility model relates to a bearing, concretely relates to be convenient for install, improve the precision fit bearing structure of installation effectiveness and reduction assembly breakage rate.

Background

The bearing is a common rotating installation component for mechanical equipment, in order to ensure better rotating performance of the mechanical equipment, the bearing has high requirement on machining precision, the assembly requirement precision is not neglected, and the rotating performance of the equipment is affected when the assembly exceeds a certain error, for example, the utility model named as 'a motor (publication No. CN101425716A) with an improved rear end cover bearing seat structure' and the invention application 'rolling bearing (application No. 201410478958.1)' disclosed by Chinese patent document all solve the problem that the clearance exists between the bearing and the installation matching position during application and creep occurs, but neglect the matching precision and the installation problem, therefore, in the actual equipment, the machining precision and the assembly of the bearing need to reach high requirements at the same time, and the equipment can realize better operating performance, however, in the existing equipment, even if the machining precision of the bearing and the bearing seat both meet the requirements, however, problems occur in the bearing or the bearing seat for mounting the bearing due to the mounting and assembling process, for example, when the bearing is pressed into the bearing seat and has deviation, the bearing and the bearing seat are extruded to deform, and damage to the bearing or the bearing seat in different degrees is caused to influence the matching precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reduce and decrease assembly bearing structure for solving current bearing structure and have foretell problem.

The utility model discloses can realize through following technical scheme:

a loss-reducing assembled bearing structure comprises an outer ring, an inner ring and a rolling body, wherein two or more than two grooves are distributed on the circumferential surface of the outer side of the outer ring in an annular mode, annular elastic composite materials are arranged on the grooves, the size of each elastic composite material corresponds to that of each groove, the outer diameter of each elastic composite material is 0.1-0.4mm higher than that of the circumferential surface of the outer side of the outer ring when the elastic composite materials are installed in the grooves, and the tolerance of the outer diameter of the outer ring is-0.01-0.07 mm.

The utility model discloses can also realize through following technical scheme:

furthermore, the two or more grooves are the same in shape and size, and the elastic composite materials arranged on the grooves are also the same in shape and size.

Furthermore, when the number of the grooves is even, the grooves are symmetrically distributed at the upper side and the lower side of the central position of the outer circumferential surface of the outer ring and are positioned at the middle positions of the upper side and the lower side.

Further, when the number of the grooves is odd, the grooves are evenly distributed on the outer circumferential surface of the outer ring.

Further, the elastic composite material comprises nitrile rubber, acrylate rubber, silicon rubber or fluorine rubber.

Further, the section of the elastic composite material is circular, and the diameter of the elastic composite material is equal to the width of the groove.

Further, the cross section of the groove is U-shaped, V-shaped or circular.

The utility model has the advantages that:

1. the size of the elastic composite material of the utility model corresponds to the groove, the outer diameter of the elastic composite material is 0.1-0.4mm higher than the outer circumference of the outer ring when the elastic composite material is arranged in the groove, the tolerance of the outer diameter of the elastic composite material is-0.0-0.07 mm, so when the elastic composite material is installed, the elastic composite material forms the function of deviation rectification, so that the utility model not only avoids the technical problem that the prior art only considers the problem of creepage generated by the clearance existing between the mounting position of the bearing and the mounting part, meanwhile, the utility model also better ensures that the bearing is easy to press (install) in the installation part under the precision matching of the bearing and the installation part, and the problem that the product quality is influenced because of extrusion deformation and even damage is avoided, when the bearing is pressed into the mounting part (such as a bearing seat) and has deviation, the bearing and the mounting part are extruded to generate deformation, and the matching precision is better ensured to be influenced due to different degrees of damage caused by the bearing or the mounting part.

2. The utility model discloses when the quantity of recess is the logarithm, the recess is about the central point of the outside periphery of outer lane puts, or when the recess is the singular, the recess is at the evenly distributed of the outside periphery of outer lane, therefore during the installation, elasticity combined material makes the bearing atress even in the installing component, makes the effective smooth hole of installing component (bearing frame) of impressing of bearing in, and effectively guarantees the cooperation precision of bearing installation, avoids pressure to produce the deviation, and causes the quality problems that extrusion deformation brought from this.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a sectional view of a three-dimensional structure according to an embodiment of the present invention.

Fig. 3 is a schematic view of a principle of use of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 2, the loss-reduction assembled bearing structure includes an outer ring 1, an inner ring 2 and rolling elements 3, two or more grooves 4 are annularly distributed on an outer circumferential surface 11 of the outer ring 1, each groove 4 is relatively parallel to a side edge of the outer ring 1 of the bearing, an annular elastic composite material 5 is respectively arranged on each groove 4, the size of the elastic composite material 5 corresponds to that of the groove 4, the outer diameter of the elastic composite material 5 when installed in the groove 4 is 0.1-0.4mm higher than the outer circumferential surface 11 of the outer ring 1, as shown in fig. 1H 1, the height of H2 is 0.1-0.4mm, the tolerance of the outer diameter of the outer ring 1 is-0.01-0.07 mm, as shown in fig. 1H 2, the tolerance of the outer diameter of H2 is-0.01-0.07 mm.

In the embodiment, the shape and size of each groove 4 are the same, the shape and size of each elastic composite material 5 arranged on each groove 4 are also the same, specifically, the shape, width and depth of each groove 4 on the outer circumferential surface 11 are the same, and the shape, diameter and radian of each annular elastic composite material 5 arranged on each groove 4 are the same. The cross section of the groove 4 is U-shaped, V-shaped or circular. When the number of the grooves 4 is even, the grooves 4 are symmetrically distributed at the upper and lower sides of the central position of the outer circumferential surface 11 of the outer ring 1 and are positioned at the middle positions of the upper and lower sides. When the number of the grooves 4 is singular, the grooves 4 are evenly distributed on the outer circumferential surface 11 of the outer ring 1. When the bearing is installed, the stress of the elastic composite material 5 on the groove 4 is uniformly dispersed between the outer circumferential surface 11 of the bearing and the side surface of the installation hole of the installation part (such as a bearing seat), so that better pressing-in deviation rectifying performance is formed, and the bearing is pressed into the installation part (namely, the installation hole) more stably and smoothly.

The elastic composite material 5 comprises nitrile rubber, acrylate rubber, silicon rubber or fluororubber, the section of the elastic composite material 5 is circular, and the diameter of the elastic composite material 5 is equal to the width of the groove 4.

The utility model discloses in the application, the bearing 6 atress is impressed installing component 7 (like bearing frame hole 71), when the deviation appears in pressure, or when bearing frame hole 71 appears the deviation in the bearing 6 impresses, as shown in fig. 3, under the effect of annular elasticity combined material 5, because elasticity performance of elasticity combined material 5, make 1 atress dispersion of outer lane of bearing 6 to the pore wall of bearing frame hole 71 on, form automatic deviation rectification. Specifically, when the bearing 6 is biased, the elastic composite material 5 of the upper outer ring 1 of the bearing 6 and the bearing seat inner hole 71 generate different stress, A, B position of the elastic composite material 5 close to the hole wall of the bearing seat inner hole 71 and the hole wall of the bearing seat inner hole 71 have large stress, C, D position of the elastic composite material 5 far away from the hole wall of the bearing seat inner hole 71 and the hole wall of the bearing seat inner hole 71 have small stress, when the bearing is continuously extruded and stressed, A, B position with large stress of the elastic composite material 5 is static under the condition that the hole wall of the bearing seat inner hole 71 is blocked (or has small resistance) (the static is opposite and does not mean a static meaning), a gap (or has small pressure) exists between C, D position with small stress of the elastic composite material 5 and the hole wall of the bearing seat inner hole 71, so that the elastic composite material returns to a normal position under the resistance action of A, B, B. C, D, namely the bearing 6 and the bearing seat inner hole 71 are parallel to each other, to form an automatic deviation rectifying function, so that the bearing 6 is smoothly and accurately pressed into the bearing seat inner hole 71, and simultaneously, when the elastic composite material 5 is arranged in the groove 4, the outer diameter is 0.1-0.4mm higher than the position of the outer circumferential surface 11 of the outer ring 1, and the tolerance of the outer diameter of the outer ring 1 is-0.01-0.07 mm, the matching precision of the bearing 6 and the bearing seat inner hole 71 can be still ensured, the deformation of the assembly due to extrusion is reduced, even the product quality is damaged and influenced, and the assembly precision is ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can apply the above-described modifications and variations to the structure and technical content without departing from the scope of the present invention.

Claims (7)

1. The utility model provides a reduce and lose assembly bearing structure, is including outer lane (1), inner circle (2) and rolling element (3), characterized by: two or more than two grooves (4) are annularly distributed on the outer side circumferential surface (11) of the outer ring (1), an annular elastic composite material (5) is arranged on each groove (4), the size of each elastic composite material (5) corresponds to that of each groove (4), the outer diameter of each elastic composite material (5) when the elastic composite material is arranged in each groove (4) is 0.1-0.4mm higher than that of the outer side circumferential surface (11) of the outer ring (1), and the tolerance of the outer diameter of the outer ring (1) is-0.01-0.07 mm.

2. A loss reduction assembly bearing structure according to claim 1, wherein: the two or more grooves (4) are the same in shape and size, and the elastic composite materials (5) arranged on the grooves (4) are also the same in shape and size.

3. A loss reduction assembly bearing structure according to claim 1, wherein: when the number of the grooves (4) is even, the grooves (4) are symmetrically distributed at the upper side and the lower side of the central position of the outer circumferential surface (11) of the outer ring (1) and are positioned at the middle positions of the upper side and the lower side.

4. A loss reduction assembly bearing structure according to claim 1, wherein: when the grooves (4) are singular, the grooves (4) are evenly distributed on the outer circumferential surface (11) of the outer ring (1).

5. A loss reduction assembly bearing structure according to claim 1, wherein: the elastic composite material (5) comprises nitrile rubber, acrylate rubber, silicon rubber or fluororubber.

6. A loss reduction assembly bearing structure according to claim 1, wherein: the section of the elastic composite material (5) is circular, and the diameter of the elastic composite material (5) is equal to the width of the groove (4).

7. A loss reduction assembly bearing structure according to claim 1, wherein: the cross section of the groove (4) is U-shaped, V-shaped or circular.

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