Precision miniature bearing for precision equipment

Abstract

The utility model provides a precise miniature bearing for precise equipment, which belongs to the technical field of bearings, aims to solve the problem that when the outer side of a dustproof cover is impacted by external force, the position of the dustproof cover between a bearing inner ring and a bearing outer ring is easy to deviate, and comprises the bearing inner ring and a plurality of rolling bodies which rotate on the outer side of the bearing inner ring in a bilateral symmetry manner; the two retainers are respectively arranged on the outer sides of the left and right rolling bodies on the same side; the bearing outer ring rotates on the outer side of the rolling body; the two dustproof covers are arranged between the bearing inner ring and the bearing outer ring in a bilateral symmetry manner; the dustproof auxiliary structure is arranged on the outer side of the dustproof cover; the lubrication auxiliary structure is arranged at the inner end of the bearing outer ring; meanwhile, positioning assistance of the dustproof cover is achieved, the contact area between the sealing compensation frame and the bearing inner ring and the contact area between the sealing compensation frame and the bearing outer ring are enlarged, the connection stability between the bearing inner ring and the dustproof cover and between the bearing outer ring and the dustproof cover is improved, and normal operation of the precise miniature bearing and the operation stability of equipment are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and more specifically, particularly relates to a precision miniature bearing used for precision equipment. Background Art

[0002] In the use of some precision equipment, in order to ensure the operating stability of the precision equipment, precision miniature bearings are often used. In the actual application of precision miniature bearings, in order to ensure the normal operation of the bearings, dust covers are often crimped between the inner ring and the outer ring of the bearing.

[0003] For example, announcement number CN214998918U discloses a precision micro bearing based on a high temperature resistant structural component, which relates to the field of bearings, including a bearing outer ring and a bearing inner mounting ring, the inner wall of the bearing outer ring is fixedly connected with a bearing outer mounting ring, the bearing outer mounting ring is provided with a bearing inner mounting ring, a ball is provided between the bearing outer mounting ring and the bearing inner mounting ring for rolling, a drainage fan blade is obliquely installed on the inner wall of the bearing outer ring, the ends of the drainage fan blades are fixedly connected with a fixing ring, and a heat dissipation fin is fixedly connected in the annular groove. The utility model can generate airflow when the bearing is in use by arranging drainage fan blades on the inner side of the bearing outer ring, and the generated airflow can take away the heat generated by the bearing, reduce the temperature inside the bearing, reduce the impact of high temperature on the bearing, and extend the service life of the bearing. By adding heat dissipation fins, the bearing itself has heat dissipation performance, so that the bearing can always be at a normal temperature when in use, reducing the impact of high temperature on the bearing.

[0004] Based on the above, there is a certain gap at the connection between the existing bearing inner ring, the bearing outer ring and the dust cover, which can easily cause fine dust to enter the connection gap, affecting the dustproof effect of the bearing. At the same time, when the outer side of the dust cover encounters external force impact, it is easy to cause the dust cover to shift between the bearing inner ring and the bearing outer ring, affecting the normal operation of the precision miniature bearing and the operating stability of the equipment. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a precision micro bearing for precision equipment to solve the problem that there is a certain gap at the connection between the existing bearing inner ring, the bearing outer ring and the dust cover, which easily causes fine dust to enter the connection gap and affect the dustproof effect of the bearing. At the same time, when the outer side of the dust cover encounters an external force impact, it is easy to cause the dust cover to shift between the bearing inner ring and the bearing outer ring, affecting the normal operation of the precision micro bearing and the operating stability of the equipment.

[0006] The purpose and effect of the precision micro bearing used in precision equipment of the utility model are achieved by the following specific technical means:

[0007] A precision miniature bearing for precision equipment comprises a bearing inner ring, rolling elements, a retaining frame, a bearing outer ring, a dust cover, a dust-proof auxiliary structure, and a lubrication auxiliary structure; there are multiple rolling elements, and the multiple rolling elements rotate symmetrically on the outside of the bearing inner ring; there are two retaining frames, and the two retaining frames are respectively arranged on the outside of the rolling elements on the left and right sides; the bearing outer ring rotates on the outside of the rolling elements; there are two dust covers, and the two dust covers are symmetrically arranged between the bearing inner ring and the bearing outer ring, and the transverse cross-sections of the two dust covers are both I-shaped structures; the dust-proof auxiliary structure is arranged on the outside of the dust cover, and the dust-proof auxiliary structure includes: a sealing compensation frame, there are multiple sealing compensation frames, and the multiple sealing compensation frames are evenly arranged and slidably connected on the outside of the two dust covers; the lubrication auxiliary structure is arranged at the inner end of the bearing outer ring.

[0008] Furthermore, an auxiliary installation groove is coaxially opened at the left end of the inner ring of the bearing; an auxiliary connection part is threadedly connected to the inner side of the auxiliary installation groove, and the transverse cross-section of the auxiliary connection part is a T-shaped structure.

[0009] Furthermore, the dust-proof auxiliary structure also includes: an elastic reset part and a high-elastic rubber part. There are multiple elastic reset parts, and the multiple elastic reset parts are evenly arranged and fixedly connected to the inner side of the connection between the sealing compensation frame and the dust cover; there are multiple high-elastic rubber parts, and the multiple high-elastic rubber parts are respectively fixedly connected to the inner side of the connection between two adjacent sealing compensation frames.

[0010] Furthermore, the dust-proof auxiliary structure also includes: a positioning auxiliary groove, which is opened between the inner ring of the bearing and the outer ring of the bearing, and the inner side of the positioning auxiliary groove is an annular slope structure inclined from the outside to the inside, and the position of the positioning auxiliary groove and the sealing compensation frame are relatively positive; the outer end face of the sealing compensation frame is an annular inclined block structure inclined from the outside to the inside.

[0011] Furthermore, the lubrication auxiliary structure includes: a lubrication through hole, a protective auxiliary plug, and an elastic connecting piece; the lubrication through hole is opened on the left side of the bearing outer ring; the protective auxiliary plug is elastically connected to the inside of the bearing outer ring, the position of the protective auxiliary plug and the lubrication through hole are relatively positive, and the transverse cross-section of the protective auxiliary plug is a convex structure; the elastic connecting piece is fixedly connected to the inner side of the connection between the protective auxiliary plug and the bearing outer ring.

[0012] Furthermore, the lubrication auxiliary structure also includes: an oil storage chamber, an oil outlet groove, and an oil-passing auxiliary groove; there are two oil storage chambers, and the two oil storage chambers are symmetrically opened inside the outer ring of the bearing; there are two oil outlet grooves, and the two oil outlet grooves are respectively located at the inner ends of the two oil storage chambers, and the transverse cross-section of the oil outlet groove is a conical structure; there are multiple oil-passing auxiliary grooves, and a circular array of multiple oil-passing auxiliary grooves is opened at the inner end of the outer ring of the bearing, and the oil-passing auxiliary grooves connect the two oil storage chambers.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] When the utility model is in use, the connecting gaps between the dust cover and the inner ring and outer ring of the bearing are compensated, the dustproof sealing effect of the bearing is improved, the entry of dust through the connecting gap is greatly slowed down, and the running stability of the bearing in the actual application process is improved;

[0015] The utility model improves the convenience of operation when assembling the dust cover and the bearing, improves the work efficiency when assembling the bearing, and realizes the positioning assistance of the dust cover, increases the contact area between the sealing compensation frame and the inner ring and the outer ring of the bearing, improves the connection stability between the inner ring and the outer ring of the bearing and the dust cover, and greatly avoids the position deviation phenomenon between the dust cover and the inner ring and the outer ring of the bearing caused by external force impact, and further ensures the normal operation of the precision miniature bearing and the operation stability of the equipment;

[0016] When the utility model is in use, the lubrication effect of the bearing is guaranteed, while the frequency of adding lubricating oil is reduced, thereby further improving the working efficiency and convenience of use of the bearing in actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the split structure of the sealing compensation frame and the dust cover of the utility model.

[0020] Figure 4 It is a schematic diagram of the lubrication auxiliary structure and the bearing outer ring installation structure of the utility model.

[0021] Figure 5 The utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Figure 6 It is a schematic diagram of the longitudinal sectional structure of the bearing outer ring of the utility model.

[0023] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0024] 1. Bearing inner ring; 101. Auxiliary installation groove; 102. Auxiliary connection parts; 2. Rolling elements; 3. Cage; 4. Bearing outer ring; 5. Dust cover; 6. Sealing compensation frame; 601. Elastic reset part; 602. High elastic rubber part; 603. Auxiliary positioning groove; 7. Lubrication through hole; 701. Auxiliary protection plug; 702. Elastic connection part; 703. Oil storage chamber; 704. Oil outlet groove; 705. Auxiliary oil groove. DETAILED DESCRIPTION

[0025] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples. Embodiment 1:

[0026] As attached Figure 1 To Attachment Figure 3 As shown:

[0027] The utility model provides a precision micro bearing for precision equipment, comprising a bearing inner ring 1, a rolling element 2, a retaining frame 3, a bearing outer ring 4, a dust cover 5, a dustproof auxiliary structure, and a lubrication auxiliary structure; there are multiple rolling elements 2, and the multiple rolling elements 2 are rotated symmetrically on the outside of the bearing inner ring 1; there are two retaining frames 3, and the two retaining frames 3 are respectively arranged on the outsides of the rolling elements 2 on the same side of the left and right sides; the bearing outer ring 4 rotates on the outside of the rolling element 2; there are two dust covers 5, and the two dust covers 5 are symmetrically arranged between the bearing inner ring 1 and the bearing outer ring 4, and the transverse sections of the two dust covers 5 are both I-shaped structures; the dustproof auxiliary structure is arranged on the outside of the dust cover 5, and the dustproof auxiliary structure includes: a sealing compensation frame 6, there are multiple sealing compensation frames 6, and the multiple sealing compensation frames 6 are evenly arranged and slidably connected to the outsides of the two dust covers 5; the lubrication auxiliary structure is arranged at the inner end of the bearing outer ring 4.

[0028] An auxiliary installation groove 101 is concentrically formed at the left end of the bearing inner ring 1 ; an auxiliary connection part 102 is threadedly connected to the inner side of the auxiliary installation groove 101 , and the transverse cross section of the auxiliary connection part 102 is a T-shaped structure.

[0029] Among them, the dust-proof auxiliary structure also includes: an elastic reset part 601 and a high-elastic rubber part 602. There are multiple elastic reset parts 601, and the multiple elastic reset parts 601 are evenly arranged and fixedly connected to the inner side of the connection between the sealing compensation frame 6 and the dust cover 5; there are multiple high-elastic rubber parts 602, and the multiple high-elastic rubber parts 602 are respectively fixedly connected to the inner side of the connection between two adjacent sealing compensation frames 6.

[0030] Among them, the dust-proof auxiliary structure also includes: a positioning auxiliary groove 603, the positioning auxiliary groove 603 is opened between the bearing inner ring 1 and the bearing outer ring 4, the inner side of the positioning auxiliary groove 603 is an annular slope structure inclined from the outside to the inside, and the position of the positioning auxiliary groove 603 is relatively positive with the sealing compensation frame 6; the outer end face of the sealing compensation frame 6 is an annular inclined block structure inclined from the outside to the inside.

[0031] The specific usage and function of this embodiment are as follows:

[0032] When the utility model is in use, after the connection auxiliary part 102 is connected to the installation auxiliary groove 101, the connection auxiliary part 102 is positioned and connected to the transmission shaft of the precision equipment, so that the connection between the bearing and the precision equipment is more stable; when the dust cover 5 is assembled with the bearing inner ring 1 and the bearing outer ring 4, after the dust cover 5 is pressed to the specified position of the bearing inner ring 1 and the bearing outer ring 4, the elastic reset part 601 automatically resets the sealing compensation frame 6, so that the sealing compensation frame 6 slides to the inside of the positioning auxiliary groove 603, thereby compensating for the connection gap between the dust cover 5 and the bearing inner ring 1 and the bearing outer ring 4, and increasing the contact area between the dust cover 5 and the sealing compensation frame 6 and the bearing inner ring 1 and the bearing outer ring 4. Embodiment 2:

[0033] On the basis of the first embodiment, Figures 4 to 6 As shown:

[0034] Among them, the lubrication auxiliary structure includes: a lubrication through hole 7, a protective auxiliary plug 701, and an elastic connecting piece 702; the lubrication through hole 7 is opened on the left side of the bearing outer ring 4; the protective auxiliary plug 701 is elastically connected to the inside of the bearing outer ring 4, the position of the protective auxiliary plug 701 and the lubrication through hole 7 is relatively positive, and the transverse cross-section of the protective auxiliary plug 701 is a convex structure; the elastic connecting piece 702 is fixedly connected to the inner side of the connection between the protective auxiliary plug 701 and the bearing outer ring 4.

[0035] Among them, the lubrication auxiliary structure also includes: an oil storage chamber 703, an oil outlet groove 704, and an oil auxiliary groove 705; there are two oil storage chambers 703, and the two oil storage chambers 703 are symmetrically opened inside the bearing outer ring 4; there are two oil outlet grooves 704, and the two oil outlet grooves 704 are respectively located at the inner ends of the two oil storage chambers 703, and the transverse cross-section of the oil outlet groove 704 is a conical structure; there are multiple oil auxiliary grooves 705, and a circular array of multiple oil auxiliary grooves 705 is opened at the inner end of the bearing outer ring 4, and the oil auxiliary grooves 705 connect the two oil storage chambers 703.

[0036] The specific usage and function of this embodiment are as follows:

[0037] When adding lubricating oil to the bearing, after pushing the protective auxiliary plug 701 inward, the lubricating through hole 7 and the oil storage chamber 703 are in a connected state, and the oil storage chamber 703 realizes the oil storage process of the lubricating oil. The lubricating oil enters the interior of the bearing from the oil outlet groove 704, realizing the lubrication process of the micro precision bearing.

Claims

1. Precision miniature bearings for precision equipment, including: A bearing inner ring (1), a plurality of rolling elements (2), two retaining frames (3), a bearing outer ring (4), two dust covers (5), a dust-proof auxiliary structure, and a lubrication auxiliary structure; the plurality of rolling elements (2) are symmetrically rotated on the outside of the bearing inner ring (1); the two retaining frames (3) are respectively arranged on the outside of the rolling elements (2) on the same side of the left and right sides; the bearing outer ring (4) rotates on the outside of the rolling elements (2); it is characterized in that: the two dust covers (5) with an I-shaped cross section are symmetrically arranged between the bearing inner ring (1) and the bearing outer ring (4); the dust-proof auxiliary structure is arranged on the outside of the dust cover (5), and the dust-proof auxiliary structure includes: a plurality of sealing compensation frames (6), the plurality of sealing compensation frames (6) with an annular oblique block structure on the outer side end surface are evenly arranged and slidably connected on the outside of the two dust covers (5); the lubrication auxiliary structure is arranged on the inner end of the bearing outer ring (4).

2. The precision micro bearing for precision equipment according to claim 1, characterized in that: An auxiliary installation groove (101) is coaxially formed at the left end of the bearing inner ring (1); an auxiliary connection piece (102) having a T-shaped cross section is threadedly connected to the inner side of the auxiliary installation groove (101).

3. The precision micro bearing for precision equipment according to claim 1, characterized in that: The dustproof auxiliary structure further comprises: a plurality of elastic reset members (601) and a plurality of highly elastic rubber members (602); the plurality of elastic reset members (601) are evenly arranged and fixedly connected to the inner side of the connection between the sealing compensation frame (6) and the dustproof cover (5); and the plurality of highly elastic rubber members (602) are respectively fixedly connected to the inner side of the connection between two adjacent sealing compensation frames (6).

4. The precision micro bearing for precision equipment according to claim 1, characterized in that: The dustproof auxiliary structure further comprises: a positioning auxiliary groove (603); the positioning auxiliary groove (603) having an annular slope structure on its inner side is provided between the bearing inner ring (1) and the bearing outer ring (4); the positioning auxiliary groove (603) and the sealing compensation frame (6) are relatively aligned in position.

5. The precision micro bearing for precision equipment according to claim 1, characterized in that: The lubrication auxiliary structure comprises: a lubrication through hole (7), a protective auxiliary plug (701), and an elastic connecting piece (702); the lubrication through hole (7) is opened on the left side of the bearing outer ring (4); the protective auxiliary plug (701) having a convex structure in a transverse cross section is elastically connected to the inside of the bearing outer ring (4), and the positions of the protective auxiliary plug (701) and the lubrication through hole (7) are relatively aligned; and the elastic connecting piece (702) is fixedly connected to the inner side of the connection between the protective auxiliary plug (701) and the bearing outer ring (4).

6. The precision micro bearing for precision equipment according to claim 1, characterized in that: The lubrication auxiliary structure further comprises: two oil storage chambers (703), two oil outlet grooves (704), and an oil-passing auxiliary groove (705); the two oil storage chambers (703) are symmetrically arranged inside the bearing outer ring (4); the two oil outlet grooves (704) are respectively located at the inner ends of the two oil storage chambers (703), and a transverse cross-section of the oil outlet grooves (704) is a conical structure; a plurality of the oil-passing auxiliary grooves (705) are arranged in a circumferential array at the inner end of the bearing outer ring (4), and the oil-passing auxiliary grooves (705) are connected to the two oil storage chambers (703).

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