CN214617542U - Bearing with sealing structure - Google Patents
Bearing with sealing structure Download PDFInfo
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- CN214617542U CN214617542U CN202120882884.3U CN202120882884U CN214617542U CN 214617542 U CN214617542 U CN 214617542U CN 202120882884 U CN202120882884 U CN 202120882884U CN 214617542 U CN214617542 U CN 214617542U
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- bearing
- ring
- sealing
- accommodating cavity
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Abstract
The utility model relates to a bearing with seal structure. The bearing includes: a bearing inner race; an accommodating cavity is formed between the bearing outer ring and the bearing inner ring; the steel ball is arranged in the accommodating cavity; the supporting frame is arranged in the accommodating cavity; each annular sealing element comprises a dustproof cover and a sealing ring which are arranged in the containing cavity; the dustproof cover and the sealing ring are mutually abutted in the radial direction of the bearing. The dustproof cover and the sealing ring are combined to seal the accommodating cavity, and the dustproof cover and the sealing ring are directly abutted against each other in the radial direction of the bearing, so that the integral structure of the bearing is simpler and the bearing is easy to assemble compared with the prior art on the premise of ensuring the sealing property; and because the adopted sealing ring is a standard part, the sealing ring does not need to be opened again, and the production cost is reduced.
Description
Technical Field
The utility model relates to a bearing with seal structure.
Background
The bearing seal is used for protecting the bearing and preventing foreign matters such as external dust, dirt, metal particles, moisture, acid gas and the like from immersing into the bearing. If the bearing is sealed poorly and foreign materials are introduced, the service life of the bearing is significantly reduced. The bearing seal also prevents grease from leaking from the bearing components, which could destroy the lubrication of the bearing, causing the bearing to heat up to burn out. Therefore, to operate the machine properly, the bearings must have good sealing means. The sealing element in the sealing device in the prior art is of an opposite-type structure, and is usually fully or semi-coated on the cover plate, and the sealing element needs to be manufactured by opening a die due to the adoption of the opposite-type structure, so that time and cost are required, and the sealing element needs to be fixed on the cover plate by adopting a fixing structure after being matched with the cover plate, so that the whole structure of the bearing is complex and is not easy to operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple and easy bearing that has seal structure.
In order to achieve the above purpose, the utility model provides a following technical scheme: a bearing having a sealing structure, comprising:
a bearing outer race;
the bearing inner ring is positioned in the bearing outer ring, an accommodating cavity is formed between the bearing outer ring and the bearing inner ring, the accommodating cavity is provided with two openings with opposite opening directions, and the opening directions of the two openings are the same as the axial direction of the bearing;
the steel ball is arranged in the accommodating cavity;
the supporting frame is arranged in the accommodating cavity and fixes the steel balls between the bearing inner ring and the bearing outer ring;
the two groups of annular sealing pieces are arranged in the accommodating cavity, are positioned on two sides of the steel ball in the axial direction of the bearing, and each group of annular sealing pieces correspondingly seals one opening of the accommodating cavity;
the annular sealing elements are characterized in that each annular sealing element comprises a dustproof cover and a sealing ring which are arranged in the containing cavity; the dustproof cover and the sealing ring are mutually abutted in the radial direction of the bearing.
Further, the seal ring is fixed on one of the bearing inner ring and the bearing outer ring.
Furthermore, one of the bearing inner ring and the bearing outer ring is provided with a mounting groove for accommodating the sealing ring.
Further, the mounting groove is formed by sinking from one of the bearing inner ring and the bearing outer ring.
Further, the mounting groove is located on the bearing inner ring.
Further, the sealing ring is an O-shaped sealing ring, and the dust cover is fixed to the other of the bearing inner ring and the bearing outer ring and connected through a clamping structure.
Further, the clamping structure comprises a clamping groove formed on the bearing inner ring or the bearing outer ring and a clamping part formed on the dustproof cover and matched with the clamping groove.
Furthermore, the dustproof cover comprises a body which abuts against the sealing ring to seal the accommodating cavity, and the clamping part is a tight ring which fixes the body on the bearing inner ring or the bearing outer ring.
Furthermore, the dust cap is fixed on the bearing outer ring, an auxiliary groove is formed in the bearing outer ring, the clamping groove is located on the outer side of the auxiliary groove, the clamping groove and the auxiliary groove form a step shape, and one end of the body is clamped in the auxiliary groove.
The beneficial effects of the utility model reside in that: the dustproof cover and the sealing ring are combined to seal the accommodating cavity, and the dustproof cover and the sealing ring are directly abutted against each other in the radial direction of the bearing, so that the integral structure of the bearing is simpler and the bearing is easy to assemble compared with the prior art on the premise of ensuring the sealing property; and because the adopted sealing ring is a standard part, the sealing ring does not need to be opened again, and the production cost is reduced.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a bearing having a sealing structure according to an embodiment of the present application.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses a shown bearing 10 with seal structure of preferred embodiment includes bearing inner race 1, bearing inner race 2, steel ball 3, support frame 4 and two sets of annular seal spare 5. The bearing inner ring 2 is located in the bearing outer ring 1, a containing cavity 6 is formed between the bearing outer ring 1 and the bearing inner ring 2, the containing cavity 6 is provided with two openings (not numbered) with opposite opening directions, and the opening directions of the openings are the same as the axial direction of the bearing 10 (the direction indicated by an arrow A-A in FIG. 1 is the axial direction of the bearing). The bearing inner ring 2 further includes a first outer ring surface 21 and a first inner ring surface 22, which are axially overlapped, and two first end surfaces (not numbered) which are oppositely arranged. The bearing outer ring 1 comprises a second inner ring surface 11 and a second outer ring surface 12 which are overlapped in axial line, and two second end surfaces which are arranged oppositely. The first end face and the second end face are located in the same plane. The steel balls 3 and the support frame 4 are both arranged in the containing cavity 6, and the support frame 4 fixes the steel balls 3 between the bearing outer ring 1 and the bearing inner ring 2. The fixing manner of the support frame 4 for fixing the steel balls 3 is a conventional structure and will not be described in detail herein.
Two groups of annular sealing elements 5 are positioned on two sides of the steel ball 3 in the axial direction of the bearing 10, and each group of annular sealing elements 5 corresponds to one opening of the closed accommodating cavity 6. The annular seal 5 includes a dust cap 51 and a seal ring 52 disposed in the housing chamber 6, and the dust cap 51 and the seal ring 52 are abutted against each other in the radial direction of the bearing 10. In this embodiment, the dust cover 51 is fixed to the bearing outer ring 1, and the seal ring 52 is fixed to the bearing outer ring 2.
The dust cap 51 includes a body 511 abutting against the sealing ring 52 to close the receiving chamber 6 and a tightening ring 514 detachably connected to the body 511. The tightening ring 514 fixes the body 511 to the bearing outer ring 1. In other embodiments, the dust-proof cover 51 may also be a curled dust-proof cover 51, the curled dust-proof cover is fixed on the bearing outer ring 1 through a stamping process, and the curled dust-proof cover is not detachable from the bearing outer ring 1. Through the turn-up for the right angle limit, can be so that fix more firmly between shield and the bearing inner race 1, however, in this embodiment, because be connected for dismantling between shield 51 and the bearing inner race 1, so, if when shield 51, sealing washer 52 harm, can help reducing the maintenance cost with the part replacement of damage.
The dust cover 51 is connected with the bearing outer ring 1 through a clamping structure. In this embodiment, the fastening structure includes a fastening groove 512 formed on the outer ring of the bearing and a fastening portion for fixing the dust-proof cover 51 to cooperate with the fastening groove 512, in this embodiment, the fastening portion is a fastening ring 514. The gripping ring 514 is located on the outside of the body 511. The clamping groove 512 is concavely formed on the bearing outer ring 1, and specifically, the clamping groove 512 is concavely formed on the second inner annular surface 12 and penetrates through the second end surface. In order to fix the grip ring 514, a holding portion 515 is formed in the holding groove 512, and the holding portion 515 is located outside the grip ring 514. The holding portion 515 and the fastening ring 514 have abutting surfaces (not numbered) abutting against each other, and the two abutting surfaces are mutually matched inclined surfaces so as to facilitate the detachment of the fastening ring 514. One end of the tightening ring 514 is fixed in the fastening groove 512, and the other end is pressed against the body 511 in the axial direction.
The bearing outer race 1 is further formed with an auxiliary groove 513, and the auxiliary groove 513 is provided adjacent to the retaining groove 512. Specifically, the auxiliary groove 513 is formed in the second inner annular surface 12 in a recessed manner, the auxiliary groove 513 is deeper than the clamping groove 512, the clamping groove 512 is located outside the auxiliary groove 513, and the clamping groove 512 is communicated with the auxiliary groove 513 and is in a step shape. The locking groove 512 has a right-angled surface (not numbered), one end of the body 511 extends into the auxiliary groove 513, and in the axial direction of the bearing, the body 511 supports against the right-angled surface, and the other end of the body 511 supports against the sealing ring.
The sealing ring 52 is a standard component, which can be directly sleeved on the bearing inner ring 2, and in order to prevent the sealing ring 52 from axially moving on the bearing inner ring 2, in this embodiment, the bearing inner ring 2 is provided with a mounting groove 53 for accommodating the sealing ring 52. The mounting groove 53 is formed recessed from the first outer ring surface 21 of the bearing inner race 52. Indeed, in other embodiments, the mounting groove 53 may be disposed on the inner race 2 by other means, such as a convex portion protruding from the outer surface of the inner race 2, and the mounting groove 53 is formed on the convex portion, which is more complex than the present embodiment. In addition, in other embodiments, the sealing ring 52 may be fixed on the bearing inner ring 2 by other means, such as by an adhesive. By arranging the mounting groove 53 on the bearing inner ring 2, the processing technology and the processing steps are simplified, and the sealing ring 52 is convenient to assemble and fix. Because the sealing ring 52 is a standard conical member, the sealing ring can be directly selected, the die sinking cost and time of the sealing ring 52 are saved, and the working efficiency is improved. In this embodiment, the sealing ring 52 is an O-ring, but in other embodiments, the sealing ring 52 may also be a V-ring or a Y-ring. The main differences of the O-shaped sealing ring, the V-shaped sealing ring and the Y-shaped sealing ring are as follows: the cross-sectional shape of the seal ring 52 is different.
In the bearing 10 with the sealing structure, the dust cover 51 and the sealing ring 52 are in transition fit to interference fit in use, and the requirements of different sealing and friction torque of the bearing are met.
In the present embodiment, the seal ring 52 is fixed to the bearing inner ring 2, and the dust cap 51 is fixed to the bearing outer ring 1. In other embodiments, the positions of the dust cap 51 and the sealing ring 52 may be interchanged, specifically: the dust cap 51 is fixed to the bearing inner ring 2, and the seal ring 52 is fixed to the bearing outer ring 1, but the fastening structure and the mounting groove 53 structure of the present embodiment may be used to fix the dust cap 51 and the seal ring 52. However, in comparison, since the bearing outer ring 1 surrounds the bearing inner ring 2, the seal ring 52 can be more easily assembled if the seal ring 52 is fixed to the bearing inner ring 2.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A bearing having a sealing structure, comprising:
a bearing outer race;
the bearing inner ring is positioned in the bearing outer ring, an accommodating cavity is formed between the bearing outer ring and the bearing inner ring, the accommodating cavity is provided with two openings with opposite opening directions, and the opening directions of the two openings are the same as the axial direction of the bearing;
the steel ball is arranged in the accommodating cavity;
the supporting frame is arranged in the accommodating cavity and fixes the steel balls between the bearing inner ring and the bearing outer ring;
the two groups of annular sealing pieces are arranged in the accommodating cavity, are positioned on two sides of the steel ball in the axial direction of the bearing, and each group of annular sealing pieces correspondingly seals one opening of the accommodating cavity;
the annular sealing elements are characterized in that each annular sealing element comprises a dustproof cover and a sealing ring which are arranged in the containing cavity; the dustproof cover and the sealing ring are mutually abutted in the radial direction of the bearing.
2. The bearing with a sealing structure according to claim 1, wherein the seal ring is fixed to one of the bearing inner ring and the bearing outer ring.
3. A bearing with a sealing structure according to claim 2, wherein one of the bearing inner race and the bearing outer race is provided with a mounting groove for receiving the seal ring.
4. The bearing with a sealing structure according to claim 3, wherein the mounting groove is formed by being recessed from one of the bearing inner race and the bearing outer race.
5. The bearing with the sealing structure according to claim 4, wherein the mounting groove is located on the bearing inner race.
6. A bearing with a sealing structure according to any one of claims 1 to 5, wherein the sealing ring is an O-ring.
7. The bearing with the sealing structure according to claim 2, wherein the dust cap is fixed to the other of the bearing inner race and the bearing outer race and is connected by a snap-fit structure.
8. The bearing with the sealing structure according to claim 7, wherein the retaining structure includes a retaining groove formed on the bearing inner ring or the bearing outer ring, and a retaining portion that fixes the dust cap to be fitted with the retaining groove.
9. The bearing with the sealing structure according to claim 8, wherein the dust cap includes a body abutting against the sealing ring to close the receiving cavity, and the fastening portion is a fastening ring for fixing the body to the bearing inner ring or the bearing outer ring.
10. The bearing with the sealing structure according to claim 9, wherein the dust cap is fixed to the bearing outer ring, an auxiliary groove is further formed in the bearing outer ring, the engaging groove is located outside the auxiliary groove, the engaging groove and the auxiliary groove form a step shape, and one end of the body is engaged in the auxiliary groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120882884.3U CN214617542U (en) | 2021-04-27 | 2021-04-27 | Bearing with sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120882884.3U CN214617542U (en) | 2021-04-27 | 2021-04-27 | Bearing with sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617542U true CN214617542U (en) | 2021-11-05 |
Family
ID=78405583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120882884.3U Active CN214617542U (en) | 2021-04-27 | 2021-04-27 | Bearing with sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214617542U (en) |
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2021
- 2021-04-27 CN CN202120882884.3U patent/CN214617542U/en active Active
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