CN219712045U

CN219712045U - Bearing with self-locking function

Info

Publication number: CN219712045U
Application number: CN202320943754.5U
Authority: CN
Inventors: 徐磊磊
Original assignee: Ningbo Huanchi Taipingyang Bearing Co ltd
Current assignee: Ningbo Huanchi Taipingyang Bearing Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-09-19
Anticipated expiration: 2033-04-24

Abstract

The utility model relates to a bearing with a self-locking function, which comprises a bearing body, wherein a bearing inner ring and a bearing outer ring are arranged on a bearing body shaft, and a first mounting groove and a first dustproof groove are formed in the bearing inner ring; the bearing outer ring is provided with a second mounting groove and a second dustproof groove which correspond to the bearing inner ring; a retainer is arranged between the first mounting groove and the second mounting groove, and the steel ball is arranged between the bearing inner ring and the bearing outer ring through the retainer; a dust cover is arranged between the first dust-proof groove and the second dust-proof groove, and the outer lip of the dust cover is made of metal and is in compression fit with the second dust-proof groove; the inner lip of the dust cover is made of rubber material and is in interference fit with the second dust groove. The utility model has the beneficial effects that: 1. the dust cover is formed by combining the metal material and the rubber material, so that the outer lip of the dust cover is fixedly connected with the bearing outer ring, and the inner lip is in interference fit with the bearing inner ring, so that the torque of the bearing body is increased, and the use requirement can be met.

Description

Bearing with self-locking function

Technical Field

The utility model relates to the field of bearing manufacturing, in particular to a bearing with a self-locking function.

Background

The self-locking function of the automatic lifting table in the existing market is completed through the self-locking part, and a customer requires the bearing to be matched with the original part to complete the self-locking function in order to save cost and volume. This requires that the bearing possess a greater torque than the type on the market by a factor of more than 4.

The existing sealing ring cannot meet the requirement of a customer on torque, and the torque required by the customer is more than 4 times that required by the existing market. The sealing ring of the existing bearing adopts a mode of wrapping a steel plate framework by rubber, and the interference part of the outer lip and the outer ring groove is rubber. When a large torque is required, the outer lip rubber part cannot be fastened with the outer ring groove, and in order to meet the requirement of a customer on the torque, the thought must be converted, so that the interference between the outer lip of the cover and the outer ring groove is enlarged.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a bearing with a self-locking function.

Comprising the steps of (a) a step of,

the bearing body is axially provided with a bearing inner ring and a bearing outer ring, and the bearing inner ring is provided with a first mounting groove and a first dustproof groove;

the bearing outer ring is provided with a second mounting groove and a second dustproof groove which correspond to the bearing inner ring;

a retainer is arranged between the first mounting groove and the second mounting groove, and the steel ball is arranged between the bearing inner ring and the bearing outer ring through the retainer;

a dust cover is arranged between the first dust-proof groove and the second dust-proof groove, and the outer lip of the dust cover is made of metal and is in compression fit with the second dust-proof groove; the inner lip of the dust cover is made of rubber material and is in interference fit with the second dust groove.

Through adopting above-mentioned technical scheme, interference fit produces extrusion deformation between the inner lip of shield and the bearing inner race, produces great frictional force, simultaneously, and compression fit reaches fastening effect between outer lip and the bearing outer lane, makes the relative shield of bearing outer lane unable rotation, has realized the great self-locking force of bearing body from this.

The technical scheme is further provided as follows: the dustproof cover comprises a metal cover and a rubber ring which are clamped with each other, the metal cover is arranged in an annular mode, the rubber ring is clamped and installed on the inner ring of the metal cover, and the inner edge of the metal cover is wrapped.

The technical scheme is further provided as follows: the outer lip is arranged on the outer edge of the metal cover and is wound to form an arc shape, and the side line of the second mounting groove is tangent to the outer lip.

Through adopting above-mentioned technical scheme, set up the outer lip into the arc through the winding, when outer lip card was gone into the second mounting groove, form a plurality of line contact with between the cell wall of second mounting groove, only need overcome very big frictional force and just can make outer lip rotate relative second mounting groove. Meanwhile, when the bearing outer ring is acted by external force, the outer lip is extruded, and the arc-shaped outer lip has larger supporting force and is not easy to be extruded and deformed.

The technical scheme is further provided as follows: the inner lip is positioned at the inner edge of the rubber ring and is arranged in a lying V shape; the two lip feet are respectively abutted with the two groove walls of the first dustproof groove.

Through adopting above-mentioned technical scheme, through setting up the inner lip into the V type of lying, increased the thickness of inner lip and blocked the degree of depth in the first dirt-proof groove to increased the contact moment of torsion.

The technical scheme is further provided as follows: the metal cover is sequentially provided with an outer lip, a reinforcing ring and a dust-proof ring from outside to inside, and the dust-proof ring is horizontally arranged relative to two end surfaces of the bearing body; the reinforcing ring is obliquely arranged, and two end parts are respectively connected with the dust-proof ring and the outer lip.

Through adopting above-mentioned technical scheme, set up the stiffening ring slope, when bearing body receives outside torsional force, decompose torsional force to reduce bearing body in axial or radial pressure, increased bearing body's intensity.

The technical scheme is further provided as follows: the dust ring is positioned higher than the outer lip.

The technical scheme is further provided as follows: the inner edge of the dustproof ring faces one side of the steel ball, a bent inserting rib is arranged on the inner edge of the dustproof ring, and a slot corresponding to the inserting rib is arranged on the rubber ring.

Through adopting above-mentioned technical scheme, connect rubber ring and metal covering through the grafting muscle of buckling, when increasing the anti crimping ability of metal covering, prevent effectively that interference fit from producing ascending extrusion force between rubber ring and the first dirt groove, further stabilize the moment of torsion scope.

The technical scheme is further provided as follows: the outer fringe of rubber ring is located the below of dust ring and with the lower terminal surface butt of dust ring, the slot is concave to be located on the up end of rubber ring.

The technical scheme is further provided as follows: the rubber ring is provided with a wrapping wall in an extending mode on the inner side of the slot, and the wrapping wall wraps the splicing rib, the splicing rib and the joint of the dustproof ring.

Through adopting above-mentioned technical scheme, the area of contact between metal cover and the rubber ring has been increased in the setting of parcel wall to need overcome bigger frictional force and just can make the relative rubber ring of metal cover rotate, make the connection of metal cover and rubber ring more firm.

The technical scheme is further provided as follows: the first dustproof slot, the second dustproof slot and the dustproof cover are all provided with two, and are symmetrically arranged on two sides of the steel ball.

Compared with the prior art, the utility model has the beneficial effects that:

1. the dust cover is formed by combining the metal material and the rubber material, so that the outer lip of the dust cover is fixedly connected with the outer ring of the bearing, and the inner lip is in interference fit with the inner ring of the bearing, thereby increasing the torque of the bearing body and enabling the torque to meet the use requirement;

2. through being arc and second dirt-proof groove connection with the shield outer fringe winding, increased the holding power of shield when increasing the moment of torsion of bearing body, be difficult for yielding when making the shield receive external force, keep its form.

Drawings

Fig. 1 is a schematic diagram of an explosion structure of the present embodiment.

Fig. 2 is an exploded view of the dust cap.

Fig. 3 is an isometric cross-sectional view of the present embodiment.

Fig. 4 is a schematic cross-sectional structure of the present embodiment.

Figure 5 is an isometric cross-sectional view of a dust cap.

The drawings are marked: 100. a bearing inner ring;

200. a bearing outer ring;

300. a retainer;

400. a steel ball;

500. a dust cover; 510. a rubber ring; 520. a metal cover; 521. an outer lip; 522. a reinforcing ring; 523. a dust-proof ring; 511. an inner lip; 524. splicing ribs; 512. and a wrapping wall.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 to 5, the present embodiment provides a bearing with a self-locking function.

Referring specifically to fig. 1, including,

the bearing comprises a bearing body, wherein the bearing body is axially provided with a bearing inner ring 100 and a bearing outer ring 200, and the bearing inner ring 100 is provided with a first mounting groove and a first dustproof groove;

the bearing outer ring 200 is provided with a second installation groove and a second dust-proof groove corresponding to the bearing inner ring 100;

a retainer 300 is arranged between the first mounting groove and the second mounting groove, and the steel ball 400 is mounted between the bearing inner ring 100 and the bearing outer ring 200 through the retainer 300;

a dust cover 500 is arranged between the first dust-proof groove and the second dust-proof groove, and an outer lip 521 of the dust cover 500 is made of metal and is in compression fit with the second dust-proof groove; the inner lip 511 of the dust cap 500 is made of rubber, and is in interference fit with the second dust groove.

In this embodiment, the inner lip 511 of the dust cap 500 is in interference fit with the bearing inner ring 100 to generate extrusion deformation, so as to generate a larger friction force, and meanwhile, the outer lip 521 is in compression fit with the bearing outer ring 200 to achieve a fastening effect, so that the bearing outer ring 200 cannot rotate relative to the dust cap 500.

When the bearing is used, the outer lip 521 is made of metal, and plays a role of supporting in the second dustproof slot, so that the bearing is not easy to deform, and a great fastening force is generated between the bearing and the bearing outer ring 200; the inner lip 511 is made of rubber, and is capable of being deformed, and when an external force is large, the friction force between the inner lip 511 and the bearing is exceeded, and the bearing inner ring 100 can be rotated relative to the dust cap 500.

Referring to fig. 2 and 3, further, the dust cover 500 includes a metal cover 520 and a rubber ring 510 that are clamped to each other, the metal cover 520 is disposed in a ring shape, and the rubber ring 510 is clamped to the inner ring of the metal cover 520 and wraps the inner edge of the metal cover 520.

In this embodiment, the pressing force between the metal cap 520 and the bearing outer ring 200 is much larger than the friction force between the rubber ring 510 and the bearing inner ring 100, i.e., the fastening connection between the dust cap 500 and the bearing outer ring 200.

In other embodiments, the metal cover 520 may be disposed on the inner ring, and the rubber ring 510 wraps the outer edge of the metal cover 520.

Further, the outer lip 521 is formed on the outer edge of the metal cover 520 and is wound to form an arc shape, and the edge line of the second mounting groove is tangent to the outer lip 521.

When the outer lip 521 is engaged in the second mounting groove, a plurality of line contacts are formed between the outer lip 521 and the groove wall of the second mounting groove, and the outer lip 521 can rotate relative to the second mounting groove only by overcoming the great friction force. Meanwhile, when the bearing outer ring 200 receives an external force, the outer lip 521 is extruded, and the arc-shaped outer lip 521 has a larger supporting force and is not easy to be extruded and deformed.

Further, referring to fig. 4, the inner lip 511 is located at the inner edge of the rubber ring 510, and is in a lying V-shape; the two lip feet are respectively abutted with the two groove walls of the first dustproof groove.

In this embodiment, when the inner lip 511 is engaged into the first dust-proof groove, the two lips abut against the two groove walls, respectively, and are deformed by pressing. The bearing inner race 100 needs to overcome the friction of the two lips to rotate relative to the dust cap 500, increasing the torque of the bearing.

By providing the inner lip 511 in a lying V-shape, the thickness of the inner lip 511 and the depth of the engagement into the first dust-proof groove are increased, thereby increasing the contact torque.

Referring to fig. 5, further, the metal cover 520 includes an outer lip 521, a reinforcing ring 522, and a dust-proof ring 523 in this order from the outside to the inside, and the dust-proof ring 523 is horizontally disposed with respect to both end surfaces of the bearing body; the reinforcing ring 522 is disposed obliquely, and both ends respectively engage the dust-proof ring 523 and the outer lip 521.

The reinforcing ring 522 is obliquely arranged, and when the bearing body receives external torsion force, the torsion force is decomposed, so that the axial or radial pressure of the bearing body is reduced, and the strength of the bearing body is increased.

Further, the dust ring 523 is located higher than the outer lip 521.

Further, a bent insertion rib 524 is disposed at the inner edge of the dust-proof ring 523 toward the steel ball 400, and a slot corresponding to the insertion rib 524 is disposed on the rubber ring 510.

The rubber ring 510 and the metal cover 520 are connected through the bent insertion ribs 524, so that the anti-curling capability of the metal cover 520 is improved, and meanwhile, the interference fit between the rubber ring 510 and the first dustproof slot is effectively prevented from generating upward extrusion force, so that the torque range is further stabilized.

Further, the outer edge of the rubber ring 510 is located below the dust-proof ring 523 and abuts against the lower end face of the dust-proof ring 523, and the slot is concavely formed on the upper end face of the rubber ring 510.

Further, a wrapping wall 512 is disposed on the rubber ring 510 and located at the inner side of the slot, and the wrapping wall 512 wraps the connection portion between the insertion rib 524 and the dust ring 523.

When the metal cap 520 receives a torsion force under the bearing outer ring 200, a tendency of relative rotation occurs between the metal cap 520 and the rubber ring 510. The arrangement of the wrapping wall 512 increases the contact area between the metal cover 520 and the rubber ring 510, so that a larger friction force needs to be overcome to rotate the metal cover 520 relative to the rubber ring 510, and the connection between the metal cover 520 and the rubber ring 510 is firmer.

Further, the first dust-proof slot, the second dust-proof slot and the dust-proof cover 500 are all provided with two, and are symmetrically arranged at two sides of the steel ball 400.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims

1. A bearing with self-locking function comprises a bearing body,

the bearing comprises a bearing body, wherein the bearing body is axially provided with a bearing inner ring (100) and a bearing outer ring (200), and the bearing inner ring (100) is provided with a first mounting groove and a first dustproof groove;

the bearing outer ring (200) is provided with a second mounting groove and a second dustproof groove which correspond to the bearing inner ring (100);

a retainer (300) is arranged between the first mounting groove and the second mounting groove, and the steel ball (400) is arranged between the bearing inner ring (100) and the bearing outer ring (200) through the retainer (300);

the method is characterized in that: a dust cover (500) is arranged between the first dust-proof groove and the second dust-proof groove, and an outer lip (521) of the dust cover (500) is made of metal and is in compression fit with the second dust-proof groove; the inner lip (511) of the dust cover (500) is made of rubber and is in interference fit with the second dust groove.

2. The bearing with self-locking function according to claim 1, wherein: the dustproof cover (500) comprises a metal cover (520) and a rubber ring (510) which are clamped with each other, wherein the metal cover (520) is arranged in a ring shape, and the rubber ring (510) is clamped and installed on the inner ring of the metal cover (520) and wraps the inner edge of the metal cover (520).

3. The bearing with self-locking function according to claim 2, wherein: the outer lip (521) is formed on the outer edge of the metal cover (520) and is wound to form an arc shape, and the edge line of the second mounting groove is tangent to the outer lip (521).

4. The bearing with self-locking function according to claim 2, wherein: the inner lip (511) is positioned at the inner edge of the rubber ring (510) and is arranged in a lying V shape; the two lip feet are respectively abutted with the two groove walls of the first dustproof groove.

5. The bearing with self-locking function according to claim 2, wherein: the metal cover (520) sequentially comprises an outer lip (521), a reinforcing ring (522) and a dust-proof ring (523) from outside to inside, and the dust-proof ring (523) is horizontally arranged relative to two end surfaces of the bearing body; the reinforcing ring (522) is obliquely arranged, and two ends are respectively connected with the dustproof ring (523) and the outer lip (521).

6. The bearing with self-locking function according to claim 5, wherein: the dust ring (523) is located higher than the outer lip (521).

7. The bearing with self-locking function according to claim 5, wherein: the inner edge of the dustproof ring (523) faces one side of the steel ball (400) and is provided with a bent inserting rib (524), and the rubber ring (510) is provided with a slot corresponding to the inserting rib (524).

8. The bearing with self-locking function according to claim 7, wherein: the outer edge of the rubber ring (510) is located below the dustproof ring (523) and is in butt joint with the lower end face of the dustproof ring (523), and the slot is concavely formed in the upper end face of the rubber ring (510).

9. The bearing with self-locking function according to claim 8, wherein: the rubber ring (510) is provided with a wrapping wall (512) in an extending mode on the inner side of the slot, and the wrapping wall (512) wraps the splicing rib (524) and the joint of the splicing rib (524) and the dust-proof ring.

10. The bearing with self-locking function according to claim 1, wherein: the first dustproof slot, the second dustproof slot and the dustproof cover (500) are respectively provided with two dustproof slots and are symmetrically arranged on two sides of the steel ball (400).