CN212509207U - Thin-wall bearing capable of reducing noise - Google Patents

Abstract

The utility model discloses a thin-wall bearing for reducing noise, which comprises an outer ring, an inner ring, a rolling body, a retainer and a dustproof cover, an inner assembly groove is formed between the outer ring and the inner ring, the retainer comprises an integrally formed annular frame body, pockets which are annularly and respectively arranged on the annular frame body, a limiting groove which is arranged along the central line of the wall of the pocket hole and a reinforcing frame which enables the annular frame body to be at least embedded in 1/2, the rolling bodies are in clearance fit in the pocket holes, the reinforcing frame is arranged along the outer wall of the annular frame body in the circumferential direction, the structure design of the utility model is reasonable, by embedding the annular frame body into the annular frame body and then placing the retainer into the assembly inner groove, the structural strength of the protective frame can be effectively enhanced, and the structural stability of the rolling bodies in the pocket holes is improved, the function of reducing noise is achieved, and the service life of the thin-wall bearing is prolonged.

Description

Thin-wall bearing capable of reducing noise

Technical Field

The utility model relates to a bearing technical field especially relates to a noise reduction's thin wall bearing.

Background

The bearing is an important part in the modern mechanical equipment. The main function of the bearing is to support the mechanical rotator, reduce the friction coefficient in the movement process of the mechanical rotator and ensure the rotation precision of the mechanical rotator, one set of the bearing is composed of inner rings, outer rings, a retainer, rolling bodies, dust caps and 6 large basic components of grease, along with the development of science and technology, the mechanical product is gradually miniaturized and developed in light weight, and the middle bearing in related equipment is gradually miniaturized and light weight, has higher precision requirement, and the thin-wall bearing is produced at the right moment.

In the prior art, under the condition that the circumferential width of an inner groove of a bearing is large, the center position of a retainer can generate large displacement, so that the retainer generates abnormal vibration in the bearing operation process, interference is generated between a cavity of the retainer and a rolling body, noise between the retainer and the retainer is generated, and the service performance of a thin-wall bearing is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to prior art's current situation, provide one kind can effectively the noise reduction, reinforcing structural strength, and longe-lived thin wall bearing.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides a thin wall bearing of noise reduction, includes outer lane, inner circle, rolling element, holder, be formed with the assembly inside groove between outer lane and the inner circle, the holder includes that integrated into one piece's annular support body, hoop divide establish the pocket hole on the annular support body, set up the reinforcement frame of injecing the recess and making the annular support body imbed 1/2 at least along the central line of pocket hole pore wall, rolling element clearance fit is in the pocket hole, the reinforcement frame sets up along annular support body outer wall hoop.

As an improvement, the reinforcing frame comprises a supporting frame body, an arc limiting plate and limiting bulges, wherein the arc limiting plate vertically extends upwards along the supporting frame body, the limiting bulges are arranged on the arc limiting plate, the supporting frame body is assembled in the assembling inner groove, a positioning cavity facilitating the pressing-in of the annular frame body is formed between the supporting frame body and the arc limiting plate, and the outer wall of the annular frame body is abutted against the limiting bulges.

And then, the pocket is respectively provided with a first arc-shaped extending end and a second arc-shaped extending end which extend upwards along the inner wall surface, an opening which is convenient for the rolling body to press in is formed between the first arc-shaped extending end and the second arc-shaped extending end, and the distance between the openings is smaller than the diameter of the rolling body.

In another improvement, the shape of the limiting projection includes, but is not limited to, a trapezoid, an arc or a long strip.

In another improvement, the material of the retainer includes but is not limited to nylon.

Compared with the prior art, the utility model has the advantages of: the utility model has the advantages of reasonable design, through with annular frame body embedding annular frame body, put into the assembly inside groove with the holder again, not only can effectively strengthen the structural strength of fender bracket, promoted the rolling element moreover and packed into the downthehole structural stability of pocket, have the function of noise reduction simultaneously, improved thin wall bearing's life.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is an exploded view of the fender bracket of the present invention;

FIG. 3 is an enlarged partial schematic view at P of FIG. 1;

fig. 4 is a schematic structural view of the reinforcing frame of the present invention.

Reference numerals: 1. an outer ring; 2. an inner ring; 3. a rolling body; 4. a protection frame; 10. assembling an inner groove; 40. an annular frame body; 41. a pocket hole; 42. defining a recess; 43. a reinforcing frame; 410. a first arcuate extension end; 411. a second arcuate extension end; 412. an opening; 430. a support frame body; 431. an arc-shaped limiting plate; 432. a limiting projection; 433. a positioning cavity.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, the utility model provides a thin-walled bearing of noise reduction, including outer lane 1, inner circle 2, rolling element 3, holder, be formed with assembly inside groove 10 between outer lane 1 and the inner circle 2, the holder includes integrated into one piece's annular support body 40, the hoop divide the pocket 41 on annular support body 40, along the central line of pocket 41 pore wall seted up limited recess 42 and make annular support body 40 imbed 1/2's reinforcement 43 at least, rolling element 3 clearance fit is in the pocket 41, reinforcement 43 sets up along annular support body 40 outer wall hoop;

the retainer has elasticity, in the process of pressing the rolling body 3 into the pocket 41, the rolling body 3 elastically deforms and is expanded, so that the rolling body 3 enters the pocket 41, then the opening 412 of the pocket 41 returns to the original size, the rolling body 3 is limited in the pocket 41, and then the limiting groove 42 on the wall of the pocket 41 is utilized, so that when the rolling body 3 is abutted against the groove end of the limiting groove 42, the stress point of the rolling body 3 is concentrated to the central position in the stress process, the possibility that the rolling body 3 falls off from the retainer is avoided, the limiting groove 42 can have the function when the rolling body 3 is coated with grease after being assembled, and the depth of the limiting groove 42 is set to be 1-2mm as the optimal selection; it is preferable to embed 1/2 of the outer wall of the ring-shaped frame body 40 in the reinforcing frame 43, thereby enhancing the structural strength of the ring-shaped frame body 40;

according to the design, the annular frame body 40 is embedded into the annular frame body 40, the retainer is placed into the inner assembly groove 10, the structural strength of the protection frame 4 can be effectively enhanced, the structural stability of the rolling bodies 3 in the pockets 41 is improved, the function of reducing noise is achieved, and the service life of the thin-wall bearing is prolonged.

In this embodiment, the reinforcing frame 43 includes a supporting frame body 430, an arc-shaped limiting plate 431 vertically extending upwards along the supporting frame body 430, and limiting protrusions 432 respectively disposed on the arc-shaped limiting plate 431, the supporting frame body 430 is assembled into the inner assembly groove 10, a positioning cavity 433 convenient for the annular frame body 40 to press in is formed between the supporting frame body 430 and the arc-shaped limiting plate 431, the outer wall of the annular frame body 40 is abutted against the limiting protrusions 432, the arc-shaped limiting plate 431 is abutted against the outer wall of the annular frame body by the limiting protrusions 432, when the annular frame body 40 is pressed into the positioning cavity 433, a certain assembly gap is left between the annular frame body 40 and the limiting protrusions 432, and the assembly gap is compensated by the limiting protrusions 432, so that the connection strength between the reinforcing frame 43 and the annular frame body 40 is.

In this embodiment, the pocket 41 has a first arc-shaped extending end 410 and a second arc-shaped extending end 411 extending upwards along the inner wall surface, an opening 412 facilitating the pressing-in of the rolling element 3 is formed between the first arc-shaped extending end 410 and the second arc-shaped extending end 411, and the distance between the openings 412 is smaller than the diameter of the rolling element 3;

the rolling bodies 3 enter the pockets 41 through the openings 412 to move, so that the movement amount of the rolling bodies 3 in the pockets 41 is reduced, the vibration of the rolling bodies 3 in the bearing operation process can be obviously reduced, and the noise generated by the vibration reduction is inevitably reduced;

first arc extension end 410 and second arc extension end 411 form owing to extend along the internal wall face of pocket 41, form the throat structure, great promotion the degree of difficulty that rolling element 3 deviates from pocket 41, the stability of bearing has been promoted, and pocket 41 cooperates the settlement of first arc extension end 410 and second arc extension end 411, the state of approximate sphere has been formed, thereby the internal surface of pocket 41 has been increased, make rolling element 3 more stable at the bearing operation in-process, further increase the effect of containing to rolling element 3, reduce the drunkenness of rolling element 3, obviously reduce the noise that rolling element 3 produced because of the vibration, and will distance between the opening 412 is less than the diameter of rolling element 3, can guarantee that rolling element 3 can be impressed by opening 412 in pocket 41, and can effectively prevent that rolling element 3 deviates from.

In this embodiment, the shape of the limiting protrusion 432 includes, but is not limited to, a trapezoid, an arc, or a long strip, and preferably, the shape of the limiting protrusion 432 is set to be a trapezoid, and the front end surface of the limiting protrusion 432 can be pressed against the outer wall of the annular frame body 40, so as to enhance the fitting stability of the reinforcing frame 43 to the annular frame body 40, and of course, the same number of grooves as the limiting protrusion 432 can be set on the outer wall of the annular frame body 40, so that the limiting protrusion 432 can be pressed against the grooves, and the connection strength between the two can also be enhanced.

In this embodiment, the material of the retainer includes but is not limited to nylon, preferably nylon material is used for support, nylon has good comprehensive performance, in the bearing operation process, the requirement of the nylon retainer for the metal retainer for lubricating grease is not high, and because the friction coefficient between the inner surface of the retainer pocket 41 made of nylon material and the rolling body 3 is low, the friction loss is greatly reduced, so that the bearing rotation is more flexible;

the utility model discloses in being impressed the reinforcement 43 with annular support body 40 pressurized annular support body 40, again with reinforcement 43 assemble to assembly inside groove 10 can, not only can effectively strengthen fender bracket 4's structural strength, promoted the structural stability of rolling element 3 packing into in the pocket hole 41 moreover, have the function of noise reduction simultaneously, improved thin wall bearing's life, in order to improve the stability and the uniformity of holder moreover, the holder extends end 410 and second arc respectively with first arc and extends end 411 injection moulding as an organic whole.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (5)

1. The utility model provides a thin wall bearing of noise reduction, includes outer lane, inner circle, rolling element, holder, be formed with the assembly inside groove between outer lane and the inner circle, its characterized in that: the holder includes that integrated into one piece's annular support body, hoop divide establish pocket hole on the annular support body, set up the reinforcement frame of injecing the recess and making the annular support body imbed 1/2 at least along the central line of pocket hole pore wall, rolling element clearance fit is in the pocket hole, the reinforcement frame sets up along annular support body outer wall hoop.

2. A thin-walled noise reducing bearing according to claim 1 wherein: the reinforcing frame comprises a supporting frame body, an arc limiting plate and limiting bulges, wherein the arc limiting plate vertically extends upwards along the supporting frame body, the limiting bulges are arranged on the arc limiting plate, the supporting frame body is assembled in the assembling inner groove, a positioning cavity facilitating the pressing-in of the annular frame body is formed between the supporting frame body and the arc limiting plate, and the outer wall of the annular frame body abuts against the limiting bulges.

3. A thin-walled noise reducing bearing according to claim 1 wherein: the pocket is respectively provided with a first arc-shaped extending end and a second arc-shaped extending end along the inner wall surface in an upward extending mode, an opening facilitating pressing of the rolling body is formed between the first arc-shaped extending end and the second arc-shaped extending end, and the distance between the openings is smaller than the diameter of the rolling body.

4. A thin-walled noise reducing bearing according to claim 2 wherein: the shape of the limiting bulge comprises but is not limited to a trapezoid, an arc or a long strip.

5. A thin-walled noise reducing bearing according to claim 1 wherein: the material of the retainer includes but is not limited to nylon.

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