CN213298587U

CN213298587U - Dustproof bearing

Info

Publication number: CN213298587U
Application number: CN202022217331.4U
Authority: CN
Inventors: 张行
Original assignee: Wuxi Yanpu Bearing Manufacturing Co Ltd
Current assignee: Wuxi Yanpu Bearing Manufacturing Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-05-28
Anticipated expiration: 2030-09-30

Abstract

The application relates to a dustproof bearing, which comprises an inner ring, an outer ring and balls, and also comprises a window type retainer and a dustproof cover, two first annular grooves are arranged on the outer wall of the inner ring, the two first annular grooves are respectively positioned on two sides of the window type retainer, two second annular grooves are formed in the inner wall of the outer ring, the two second annular grooves are respectively positioned on two sides of the window type retainer, dust covers are respectively arranged on the first annular groove and the second annular groove which are positioned on two sides of the window type retainer, the outer side edge of the dustproof cover is inserted into the second annular groove, an elastic piece which is used for being clamped with the first annular groove is arranged along the circumference of the inner side edge of the dustproof cover, the cross-section of elastic component is semicircle annular, the terminal surface of the one end of elastic component with the inboard side rigid coupling of shield, the other end with the tank bottom of first ring channel is inconsistent. This application has the life's of extension bearing effect.

Description

Dustproof bearing

Technical Field

The application relates to the field of bearing manufacturing, in particular to a dustproof bearing.

Background

A bearing is a mechanical element that limits relative motion to a desired range of motion and reduces friction between moving parts. The design of the bearings can provide free linear movement or free rotation of the moving part about a fixed axis, and can also prevent movement by controlling the vector of the normal force acting on the moving part. Most bearings facilitate the required motion by minimizing friction.

The Chinese utility model with the current publication number of CN204061549U discloses a deep groove ball bearing with long service life, the bearing comprises a bearing inner ring and a bearing outer ring, balls are arranged between the bearing inner ring and the bearing outer ring, the bearing also comprises a spiral rubber tube, the outer end of the spiral rubber tube is arranged on the bearing outer ring, the inner end of the spiral rubber tube is connected with a conductive column, and a central through hole is arranged in the conductive column; the bearing also comprises a guide pillar made of ceramics, one end of the guide pillar sequentially penetrates through the central through hole and the spiral rubber tube and is fixed on the inner circular surface of the outer ring of the bearing, the outer ring of the bearing is connected with the conductive column through a conducting wire, a plurality of metal wires attached to the outer circular surface of the inner ring of the bearing are arranged on the conductive column, and a magnetic sheet is further arranged on the inner circular surface of the outer ring of the bearing.

With respect to the related art in the above, the inventors consider that: the bearing can be used for ordinary use, but the bearing is in ordinary use, because leave the space between bearing outer ring and the inner ring, in external dust and debris got into the bearing easily, frictional force increase when the ball in the bearing rolled for ball and inner ring and outer loop take place wearing and tearing, thereby cause the damage to the bearing, and then reduce bearing life.

SUMMERY OF THE UTILITY MODEL

In order to prolong the service life of the bearing, the application provides a dustproof bearing.

The application provides a dustproof bearing adopts following technical scheme:

a dustproof bearing comprises an inner ring, an outer ring and balls, and also comprises a window type retainer and a dustproof cover, two first annular grooves are arranged on the outer wall of the inner ring, the two first annular grooves are respectively positioned on two sides of the window type retainer, two second annular grooves are formed in the inner wall of the outer ring, the two second annular grooves are respectively positioned on two sides of the window type retainer, dust covers are respectively arranged on the first annular groove and the second annular groove which are positioned on two sides of the window type retainer, the outer side edge of the dustproof cover is inserted into the second annular groove, an elastic piece which is used for being clamped with the first annular groove is arranged along the circumference of the inner side edge of the dustproof cover, the cross-section of elastic component is semicircle annular, the terminal surface of the one end of elastic component with the inboard side rigid coupling of shield, the other end with the tank bottom of first ring channel is inconsistent.

Through adopting above-mentioned technical scheme, when the bearing assembly finishes the back, through insert the second ring channel with shield outside limit earlier, the rethread pushes down the shield, make the interior epaxial elastic component of side of shield and inner ring contact elastic deformation take place, push down the shield again, the elastic component reachs in the first ring channel, the elastic component reconversion, the elastic component joint is in first ring channel, make the shield fixed, utilize the shield can effectively block dust and debris, thereby can guarantee that the ball in the bearing is difficult for receiving wearing and tearing, and then can prolong the life of bearing.

Optionally, a sealing ring is arranged in the second annular groove, and the side surfaces of two sides of the sealing ring are respectively abutted against the inner wall of the second annular groove close to one side of the window type holder and the side surface of the dust cover close to one side of the window type holder.

Through adopting above-mentioned technical scheme, owing to set up the sealing washer in the second annular groove, the side inconsistent of sealing washer and second annular groove inner wall and shield for lubricating oil in the bearing is difficult for flowing out from the second annular groove, is favorable to guaranteeing the abundant of lubricating oil in the bearing, thereby can reduce the wearing and tearing of ball and inner ring and outer loop, and then can prolong the life of bearing.

Optionally, a baffle distributed along the circumference of the sealing ring is fixedly connected to the side surface of the dust cover close to one side of the window type retainer, and the side surface of the baffle close to one side of the sealing ring is abutted against the sealing ring and the inner wall of the outer ring.

Through adopting above-mentioned technical scheme, utilize the baffle can further to the sealed of second annular groove department, can further guarantee that the interior lubricating oil of bearing is difficult for flowing out.

Optionally, a gasket is further disposed in the second annular groove, and side surfaces of two sides of the gasket are respectively abutted against an inner wall of the second annular groove on one side far away from the window type holder and a side surface of the dust cover on one side close to the window type holder.

Through adopting above-mentioned technical scheme, owing to set up the packing ring in the second annular groove, utilize the packing ring extrusion shield, recycle the shield extrusion sealing washer for second annular groove department leakproofness further increases, thereby can further guarantee that the lubricating oil in the bearing is difficult for flowing out.

Optionally, the packing ring is the major arc shape, just the tip at packing ring both ends all is the quadrangular pyramid form.

Through adopting above-mentioned technical scheme, when the shield was dismantled to needs, because the tip at packing ring both ends is the quadrangular pyramid form, chosen the toper tip of packing ring through the use of tool, be favorable to taking out of packing ring.

Optionally, a plurality of lubricating oil grooves are formed in the window type retainer and distributed between two adjacent balls, and the lubricating oil grooves are communicated with the inner wall and the outer wall of the window type retainer.

Through adopting above-mentioned technical scheme, owing to set up a plurality of lubrication grooves on window formula holder, annotate lubricating oil in the lubrication groove for the bearing also can lubricate the ball at the operation in-process, thereby can reduce the wearing and tearing of ball and inner ring and outer loop, and then can follow the life of long bearing.

Optionally, a support column is fixedly connected between the inner walls of the lubricating oil grooves and located in the middle of the lubricating oil grooves.

By adopting the technical scheme, the strength of the window type retainer can be enhanced by utilizing the supporting columns.

Optionally, the inner cavity of the lubricating oil groove is in an elliptical spherical shape, and two ends of a long shaft of the lubricating oil groove in the elliptical spherical shape are respectively communicated with the inner wall and the outer wall of the window type retainer.

By adopting the technical scheme, the inner cavity of the lubricating oil groove is in an oval shape, so that more lubricating oil can be filled.

In summary, the present application includes at least one of the following beneficial technical effects:

after the bearing is assembled, the outer side edge of the dustproof cover is inserted into the second annular groove, then the dustproof cover is pressed downwards, the elastic piece on the inner side edge of the dustproof cover is in contact with the inner ring to generate elastic deformation, then the dustproof cover is pressed downwards, the elastic piece reaches the first annular groove, the elastic piece recovers the original state, the elastic piece is clamped in the first annular groove, the dustproof cover is fixed, dust and sundries can be effectively blocked by the dustproof cover, so that balls in the bearing can be prevented from being abraded easily, and the service life of the bearing can be prolonged;

because the sealing ring is arranged in the second annular groove and is abutted against the inner wall of the second annular groove and the side surface of the dustproof cover, the lubricating oil in the bearing is not easy to flow out of the second annular groove, which is beneficial to ensuring the sufficiency of the lubricating oil in the bearing, thereby reducing the abrasion among the ball, the inner ring and the outer ring and further prolonging the service life of the bearing;

because set up the packing ring in the second annular groove, utilize the packing ring extrusion shield, recycle the shield extrusion sealing washer for second annular groove department leakproofness further increases, thereby can further guarantee that the lubricating oil in the bearing is difficult for flowing out.

Drawings

Fig. 1 is an exploded view of a dust bearing according to an embodiment of the present application.

Fig. 2 is a schematic sectional view of a dust bearing according to an embodiment of the present application.

Fig. 3 is an enlarged schematic structural view of a portion B in fig. 2, mainly illustrating an arrangement manner of the gasket, the dust cap, and the sealing ring.

Fig. 4 is an enlarged structural view of a portion a in fig. 1, mainly illustrating end portions of both ends of the gasket.

Description of reference numerals: 1. an inner ring; 2. an outer ring; 3. a ball bearing; 4. a window type retainer; 5. a dust cover; 6. a seal ring; 7. a gasket; 11. a first annular groove; 21. a second annular groove; 41. a lubricating oil groove; 42. a support pillar; 43. a window; 51. an elastic member; 52. and a baffle plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a dustproof bearing. Referring to fig. 1 and 2, the dustproof bearing comprises a window type retainer 4, balls 3, an inner ring 1, an outer ring 2 and a dustproof cover 5, wherein the window type retainer 4 is integrated and is in a circular ring shape, the window type retainer 4 is provided with a plurality of windows 43 which are uniformly distributed along a circle of the window type retainer 4, the windows 43 are communicated with the inner wall and the outer wall of the window type retainer 4, the balls 3 are in clearance fit with the windows 43, the balls 3 and the window type retainer 4 are arranged between the outer ring 2 and the inner ring 1, and the balls 3 are in clearance fit with the inner wall of the outer ring 2 and the outer wall of the; a lubricating oil groove 41 is formed in the window type holder 4, the lubricating oil grooves 41 are multiple and are respectively located between adjacent windows 43, two supporting columns 42 for supporting the window type holder 4 are fixedly connected to the inner wall of each lubricating oil groove 41, the inner cavity of each lubricating oil groove 41 is oval spherical, two ends of the long axis of each oval spherical lubricating oil groove 41 are respectively communicated with the inner wall and the outer wall of the window type holder 4, and the oval spherical inner cavity is beneficial to filling more lubricating oil.

Referring to fig. 2 and 3, the outer wall of the inner ring 1 is provided with two first annular grooves 11, the two first annular grooves 11 are respectively located on two sides of the window type holder 4, the inner wall of the outer ring 2 is provided with two second annular grooves 21, the two second annular grooves 21 are respectively located on two sides of the window type holder 4, the widths of the inner ring 1 and the outer ring 2 are the same, the widths of the inner ring 1 and the outer ring 2 are larger than that of the window type holder 4, and the distance between the two first annular grooves 11 is larger than that between the two second annular grooves 21; the shield 5 is the ring form, and in the second ring channel 21 was inserted to the outside limit of shield 5, the one week of the inboard side of edge shield 5 was provided with the elastic component 51 that is used for with 11 joints of first ring channel, and the cross-section of elastic component 51 is half circular ring shape, the terminal surface of the one end of elastic component 51 and the inboard side integrated into one piece of shield 5, other end joint in second ring channel 21.

After the bearing assembly finishes, through insert the second ring channel 21 with the 5 outside limits of shield earlier in, the rethread pushes down shield 5, make the elastic component 51 on the inboard edge of shield 5 and inner ring 1 contact and take place elastic deformation, push down shield 5 again, elastic component 51 reachs in the first ring channel 11, elastic component 51 reconversion, elastic component 51 joint is in first ring channel 11, make shield 5 fixed, utilize shield 5 can effectively block dust and debris, thereby can guarantee that ball 3 in the bearing is difficult for receiving wearing and tearing, and then can prolong the life of bearing.

Referring to fig. 3, a sealing ring 6 is arranged in the second annular groove 21, the sealing ring 6 is positioned between the dust cover 5 and the inner wall of the second annular groove 21 close to the window type retainer 4, the side surfaces of the two sides of the sealing ring 6 are respectively abutted against the inner walls of the dust cover 5 and the second annular groove 21, and the sealing ring 6 can prevent lubricating oil from flowing out of the bearing, so that the abrasion of the balls 3 and the inner ring 1 and the outer ring 2 can be reduced, and the service life of the bearing can be prolonged; the side of the dust cover 5 close to one side of the window type retainer 4 is integrally formed with a baffle 52 arranged along the circumference of the outer ring 2, the side of the baffle 52 close to one side of the inner wall of the outer ring 2 is abutted against the inner wall of the outer ring 2 and the sealing ring 6, and the baffle 52 can further block the outflow of the lubricating oil.

Referring to fig. 1 and 4, a gasket 7 is arranged in the second annular groove 21, the gasket 7 is in a major arc shape, the end portions of the two ends of the gasket 7 are in a quadrangular pyramid shape, the end portions of the quadrangular pyramid shape are convenient for detaching the gasket 7, the side surfaces of the two sides of the gasket 7 are respectively abutted to the side surface of the dustproof cover 5 close to one side of the window type retainer 4 and the inner wall of the second annular groove 21 far away from one side of the window type retainer 4, the dustproof cover 5 is extruded by the gasket 7, the dustproof cover 5 extrudes the sealing ring 6 again, the sealing performance of the second annular groove 21 is further improved, and therefore the lubricating oil in the bearing can be further.

The implementation principle of the dustproof bearing in the embodiment of the application is as follows: after the bearing assembly finishes, establish earlier sealing washer 6 inlays in second annular groove 21, insert second annular groove 21 with the 5 outside limits of shield again, the rethread pushes down shield 5, make the interior side of shield 5 on elastic component 51 and the contact of inner ring 1 take place elastic deformation, push down shield 5 again, elastic component 51 reachs in first annular groove 11, elastic component 51 reconversion, elastic component 51 joint is in first annular groove 11, inlay washer 7 in second annular groove 21 at last, make shield 5 fixed, utilize shield 5 can effectively block dust and debris, thereby can guarantee that ball 3 in the bearing is difficult for receiving wearing and tearing, and then can prolong the life of bearing.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a dust bearing, includes inner ring (1), outer loop (2) and ball (3), its characterized in that: the dustproof bearing further comprises a window type retainer (4) and a dustproof cover (5), two first annular grooves (11) are formed in the outer wall of the inner ring (1), the two first annular grooves (11) are respectively located on two sides of the window type retainer (4), two second annular grooves (21) are formed in the inner wall of the outer ring (2), the two second annular grooves (21) are respectively located on two sides of the window type retainer (4), the first annular grooves (11) and the second annular grooves (21) located on two sides of the window type retainer (4) are respectively provided with the dustproof cover (5), the outer side edge of the dustproof cover (5) is inserted into the second annular grooves (21), an elastic piece (51) used for being clamped with the first annular grooves (11) is arranged along the periphery of the inner side edge of the dustproof cover (5), and the section of the elastic piece (51) is in a semicircular ring shape, the end face of one end of the elastic piece (51) is fixedly connected with the inner side edge of the dustproof cover (5), and the other end of the elastic piece is abutted to the groove bottom of the first annular groove (11).

2. The dust bearing of claim 1, wherein: and a sealing ring (6) is arranged in the second annular groove (21), and the side surfaces of two sides of the sealing ring (6) are respectively abutted against the inner wall of one side, close to the window type retainer (4), of the second annular groove (21) and the side surface, close to one side of the window type retainer (4), of the dustproof cover (5).

3. The dust bearing of claim 2, wherein: the side face, close to one side of the window type retainer (4), of the dustproof cover (5) is fixedly connected with a baffle (52) distributed along the periphery of the sealing ring (6), and the side face, close to one side of the sealing ring (6), of the baffle (52) is abutted to the inner wall of the outer ring (2) and the sealing ring (6).

4. The dust bearing of claim 2, wherein: and a gasket (7) is further arranged in the second annular groove (21), and the side surfaces of two sides of the gasket (7) are respectively abutted against the inner wall of one side of the second annular groove (21) far away from the window type retainer (4) and the side surface of one side of the dustproof cover (5) close to the window type retainer (4).

5. The dust bearing of claim 4, wherein: the gasket (7) is major arc shape, just the tip at gasket (7) both ends all is the quadrangular pyramid form.

6. The dust bearing of claim 1, wherein: and a plurality of lubricating oil grooves (41) are formed in the window type retainer (4), the lubricating oil grooves (41) are distributed between two adjacent balls (3), and the lubricating oil grooves (41) are communicated with the inner wall and the outer wall of the window type retainer (4).

7. The dust bearing of claim 6, wherein: a supporting column (42) is fixedly connected between the inner walls of the lubricating oil grooves (41), and the supporting column (42) is located in the middle of the lubricating oil grooves (41).

8. The dust bearing of claim 6, wherein: the inner cavity of the lubricating oil groove (41) is in an elliptical spherical shape, and two ends of a long shaft of the lubricating oil groove (41) in the elliptical spherical shape are respectively communicated with the inner wall and the outer wall of the window type retainer (4).