Bearing assembly

Abstract

A bearing assembly is used for solving the problems that an existing bearing is prone to abrasion and noise is generated. Comprising a sleeve; the bearing is located in the sleeve, a shaft hole of the bearing penetrates from an inner ring top face to a bottom face, the bearing is provided with at least one inner wall groove which is arranged on an inner wall face of the bearing in a surrounding mode, and a guide inclined face is formed at the edge angle of the junction of the inner wall face and the bottom face. The tail end of the channel of the at least one inner wall groove is communicated to the guide inclined surface, and the guide angle size of the guide inclined surface is greater than the depth of each inner wall groove; and the rotating part is rotatably combined in the shaft hole, an oil storage space is formed between the rotating part and the guide inclined surface, and lubricating oil flows to the guide inclined surface along the at least one inner wall groove and enters the oil storage space. Therefore, the effects of reducing operation friction and lowering noise can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mechanical transmission device, especially a bearing assembly with storage and supply of lubricating oil. BACKGROUND

[0002] The existing bearing is usually made of metal powder as raw material by powder metallurgy technology, is pressed and sintered, and is made into self-lubricating bearing capable of containing oil, powder metallurgy can utilize mold forming, and the process is simple and convenient and the cost is low, but the internal lubricating oil of the sintered bearing is reduced or deteriorated after long time use, and the contact surface of the bearing and the rotating shaft is worn, resulting in friction noise and efficiency reduction during operation.

[0003] Another existing bearing is made of high-hardness material (for example: phosphor bronze), and is cut into a circular component on a lathe, and lubricating oil needs to be injected between the bearing and the rotating shaft to bear the pressure during rotation, but the existing bearing structure lacks oil storage space and the lubricating oil has poor fluidity, resulting in low oil film strength between the bearing and the rotating shaft, unstable rotation, and easy shaking and noise.

[0004] Therefore, the existing bearing assembly still needs to be improved. SUMMARY

[0005] To solve the above problems, the purpose of the utility model is to provide a bearing assembly which can enhance the oil film strength between the bearing and the shaft.

[0006] The second purpose of the utility model is to provide a bearing assembly which can improve the durability of the bearing.

[0007] The other purpose of the utility model is to provide a bearing assembly which can reduce the noise during operation.

[0008] The directionality or its approximate language in the whole text of the utility model, for example, "up (top)", "down (bottom)", "inner", "outer", "axial", "radial", "side surface" and the like, mainly refers to the direction of the drawings, and each directionality or its approximate language is only used to assist in describing and understanding each embodiment of the utility model, and is not used to limit the utility model.

[0009] The quantifier "one" of the elements and components recorded in the whole text of the utility model is only used for convenience and provides the general meaning of the scope of the utility model; in the utility model, it should be interpreted as including one or at least one, and the concept of a single one also includes multiple cases, unless it obviously means other meanings.

[0010] The "combination", "combination" or "assembly" and other similar terms described in the whole text of the utility model mainly include the state that the components can be separated without being damaged after being connected or the components cannot be separated after being connected, and the skilled person in the art can select according to the material quality of the components to be connected or assembly requirements.

[0011] The bearing assembly of the utility model, comprising: a sleeve; a bearing located in the sleeve, an inner ring top surface and an outer ring top surface of the bearing are axially opposite to a bottom surface of the bearing, an axle hole of the bearing is penetrated from the inner ring top surface to the bottom surface, an inner wall surface of the bearing surrounds a pipeline of the axle hole, the bearing has at least one inner wall groove arranged around the inner wall surface, two ends of each inner wall groove are connected to the inner ring top surface and the bottom surface respectively, an edge angle of the junction between the inner wall surface and the bottom surface forms a guide slope, a channel end of the at least one inner wall groove is communicated to the guide slope, and the guide angle size of the guide slope is greater than the depth of each inner wall groove in width and height; and a rotating member having a rotating shaft and a thrust plate, the rotating shaft is rotatably combined in the axle hole of the bearing, the thrust plate is combined at one end of the rotating shaft and located on the bottom surface side of the bearing, and an oil storage space is formed between the rotating shaft, the thrust plate and the guide slope.

[0012] Therefore, the bearing assembly of the utility model forms a space for guiding and storing lubricating oil through the bearing structure, can increase the oil film strength between the rotating shaft and the bearing, reduce the friction between the elements, has the effect of prolonging the service life of the bearing and reducing the running noise.

[0013] The axial height of the inner ring top surface from the bottom surface is greater than the axial height of the outer ring top surface from the bottom surface, a first outer wall surface is radially outward between the inner ring top surface and the outer ring top surface, and a second outer wall surface is radially outward between the outer ring top surface and the bottom surface. In this way, a ring-shaped shoulder can be formed at the upper end of the bearing, which has the effects of installing components and storing lubricating oil.

[0014] The bearing has at least one top surface groove arranged around the inner ring top surface of the bearing, the at least one top surface groove extends in the radial direction, and two ends of each top surface groove are connected to the inner wall surface and the first outer wall surface. In this way, the lubricating oil flows along the at least one top surface groove, the lubricating oil can be guided from the top of the bearing into the space between the rotating shaft and the bearing, and the effects of enhancing the oil film strength and reducing the rotating friction are achieved.

[0015] The bearing end edges can eliminate sharp corners to reduce collision and abrasion, and can form additional oil storage space, thereby storing lubricating oil and improving durability.

[0016] The first outer wall surface, the outer ring top surface, and the inner wall of one tube of the sleeve surround to form an installation space, and a positioning ring is arranged in the installation space. In this way, the positioning ring can fix the bearing, and the gap between the positioning ring and the bearing can store lubricating oil, thereby stabilizing the bearing structure and concentrating the lubricating oil.

[0017] The positioning ring has a cover portion and a through hole, the cover portion extends radially from the tube toward the rotating shaft to cover the inner ring top surface of the bearing, and the radial end of the cover portion surrounds the through hole, and the rotating shaft extends through the through hole. In this way, the cover portion can protect the bearing and block the leakage of lubricating oil from between the rotating shaft and the bearing, thereby preventing the leakage of lubricating oil.

[0018] The positioning ring has a slope located adjacent to the through hole of the cover portion, the slope faces the inner ring top surface of the bearing, and the slope and the inner ring top surface form an oil guide channel around the through hole, and the channel height of the oil guide channel gradually decreases radially outward adjacent to the through hole. In this way, the lubricating oil leaked from between the rotating shaft and the bearing can be guided into the larger opening of the oil guide channel, and then continuously flows into the gap between the positioning ring and the bearing, thereby concentrating the lubricating oil and avoiding leakage.

[0019] The sleeve has a bottom cover axially opposite the positioning ring, and the bottom cover seals the bottom end of the tube, and the thrust plate rotates between the bearing and the bottom cover. In this way, the bottom cover can position the bearing and seal the lubricating oil, and an oil film is formed between the thrust plate and the bottom cover, thereby assembling the bearing and righting the rotating member.

[0020] The upper surface of the bottom cover has a ring groove opposite the outer circumferential end of the thrust plate of the rotating member. In this way, the ring groove can reserve a collision space to avoid the thrust plate colliding with the bottom cover, and the ring groove can also store and supply lubricating oil, thereby reducing rotational friction and avoiding collision.

[0021] The upper surface of the bottom cover has a central groove opposite the rotation axis of the rotating shaft of the rotating member. In this way, the central groove can provide a space for the partial structure of the rotating member to extend into, and can be used to store lubricating oil, thereby avoiding structural collision and maintaining an oil film.

[0022] The sleeve includes a spacer, the upper and lower ends of which abut against the bottom surface of the bearing and the upper surface of the bottom cover, respectively. Thus, the bottom cover can support the bearing through the spacer, which also maintains a distance between the bearing and the bottom cover, allowing the thrust plate to rotate and lubricating oil to flow, thereby forming an oil film and generating dynamic pressure. Attached Figure Description

[0023] Figure 1 : An exploded perspective view of a preferred embodiment of the present invention;

[0024] Figure 2 : A combined sectional view of a preferred embodiment of this utility model;

[0025] Figure 3 :along Figure 2 AA-line cross-section;

[0026] Figure 4 :like Figure 2 A magnified view of the local structure of region B shown;

[0027] Figure 5 : A perspective view of a bearing according to another embodiment of the present invention;

[0028] Figure 6 : Top view of a bearing according to another embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] H: Bearing assembly

[0031] 1: Sleeve

[0032] 11: Pipe body

[0033] 11a: Opening

[0034] 12: Bottom Cover

[0035] 12a: Upper surface

[0036] 13: Spacer

[0037] 14: Annular groove

[0038] 15: Central groove

[0039] 2: Bearings

[0040] 2a: Top surface of the inner ring

[0041] 2b: Top surface of the outer ring

[0042] 2c: Bottom surface

[0043] 2d: inner wall surface

[0044] 2e: first outer wall surface

[0045] 2f: second outer wall surface

[0046] 21: shaft hole

[0047] 22: inner wall groove

[0048] 23: guide slope

[0049] 24: top surface groove

[0050] 3: rotating member

[0051] 31: rotation shaft

[0052] 32: stopper plate

[0053] 4: positioning ring

[0054] 41: cover portion

[0055] 42: through hole

[0056] 43: slope

[0057] M: installation space

[0058] T1: width

[0059] T2: height

[0060] G: depth

[0061] S: oil storage space

[0062] P: oil guide passage DETAILED DESCRIPTION

[0063] In order to make the above and other objects, features and advantages of the present application more comprehensible, a preferred embodiment of the present application will be described below in detail with reference to the drawings. In addition, the same reference numerals are used to denote the same components throughout the drawings, and the description thereof will be omitted.

[0064] Please refer to Figure 1 , which is a preferred embodiment of the bearing assembly of the present application. The bearing assembly H includes a sleeve 1, a bearing 2, a rotating member 3 and a positioning ring 4. The bearing 2 is located in the sleeve 1. The rotating member 3 is rotatably combined in the bearing 2. The positioning ring 4 is combined with the sleeve 1 to limit the position of the bearing 2.

[0065] Please refer to Figure 1 and Figure 2As shown, the sleeve 1 can include a hollow tube body 11 and a bottom cover 12 closing the bottom end opening of the tube body 11, the inner space of the tube body 11 is used to accommodate the bearing 2 and the rotating member 3 and inject lubricating oil, the other end of the tube body 11 relative to the bottom cover 12 is an opening 11a, the bearing 2 can be placed into the tube body 11 from the opening 11a, and the rotating member 3 can be sleeved into the bearing 2 from the tube body 11, and the bottom end of the tube body 11 is closed by the bottom cover 12, the upper surface 12a of the bottom cover 12 faces the inside of the tube body 11, and in this embodiment, the outer side edge of the bottom cover 12 is tightly fitted or laser welded to the inner wall of the tube body 11.

[0066] The sleeve 1 can also have a spacer 13, the upper and lower ends of the spacer 13 abut the bearing 2 and the upper surface 12a of the bottom cover 12 respectively, in this embodiment, the spacer 13 is an annular body, and the spacer 13 is preferably positioned at the outer periphery of the bearing 2 to avoid interfering with the rotation of the rotating member 3. The sleeve 1 can also form a ring groove 14 and a central groove 15 on the upper surface 12a of the bottom cover 12, the ring groove 14 is positioned at the outer peripheral end of the rotating member 3, and the central groove 15 is positioned at the rotating axis part of the rotating member 3, the ring groove 14 and the central groove 15 can serve as a space for storing lubricating oil, the ring groove 14 can also reserve a collision prevention space for avoiding the slightly inclined rotating member 3 from colliding with the upper surface 12a of the bottom cover 12 when the rotating member 3 rotates and shakes; and the central groove 15 can also provide a space for the partial structure of the rotating member 3 to extend into.

[0067] The bearing 2 is located in the tube body 11 of the sleeve 1, so that an inner ring top surface 2a and an outer ring top surface 2b of the bearing 2 face the opening 11a of the tube body 11, and a bottom surface 2c of the bearing 2 faces the bottom cover 12, the inner ring top surface 2a and the outer ring top surface 2b are axially opposite to the bottom surface 2c respectively, an axle hole 21 of the bearing 2 penetrates from the inner ring top surface 2a to the bottom surface 2c, and an inner wall surface 2d of the bearing 2 surrounds the pipeline of the axle hole 21; in addition, the axial height of the inner ring top surface 2a from the bottom surface 2c can be greater than the axial height of the outer ring top surface 2b from the bottom surface 2c, a ring-shaped shoulder is formed at the outer edge of the bearing 2, and a first outer wall surface 2e radially outward between the inner ring top surface 2a and the outer ring top surface 2b, and a second outer wall surface 2f radially outward between the outer ring top surface 2b and the bottom surface 2c. In addition, the first outer wall surface 2e, the outer ring top surface 2b, and the inner wall of the tube body 11 can also surround a mounting space M at the shoulder of the bearing 2; in addition, the bearing 2 can be tightly fitted to the inner wall of the tube body 11 through the second outer wall surface 2f; in addition, the bottom surface 2c of the bearing 2 abuts the spacer 13 of the sleeve 1, so that a spacing distance is maintained between the bearing 2 and the bottom cover 12.

[0068] Please refer to Figure 3 As shown in the figure, the bearing 2 has at least one inner wall groove 22 arranged around the inner wall surface 2d of the bearing 2, and the extension direction of the at least one inner wall groove 22 is parallel to the rotation axis of the rotating member 3, and the two ends of each inner wall groove 22 are connected to the inner ring top surface 2a and the bottom surface 2c of the bearing 2, respectively. In this embodiment, the cross-sectional shape of each inner wall groove 22 is inverted triangular, but the present utility model is not limited to the shape of each inner wall groove 22.

[0069] Please refer to Figure 4 As shown in the figure, the edge angle of the bearing 2 at the junction of the inner wall surface 2d and the bottom surface 2c can form a guide slope 23, the channel end of the at least one inner wall groove 22 is communicated to the guide slope 23, and the width T1 and height T2 of the guide angle size of the guide slope 23 are both greater than the depth G of each inner wall groove 22, so that the guide slope 23 and the rotating member 3 form an oil storage space S for lubricating oil, and the lubricating oil can flow along the at least one inner wall groove 22 to the guide slope 23 and enter the oil storage space S.

[0070] In addition, other edge angles of the bearing 2 can also form guide angles, such as Figure 1 and Figure 2 As shown in the figure, the junction of the inner ring top surface 2a and the inner wall surface 2d, the junction of the inner ring top surface 2a and the first outer wall surface 2e, the junction of the outer ring top surface 2b and the second outer wall surface 2f, and the junction of the second outer wall surface 2f and the bottom surface 2c are all guide angles. In addition to reducing sharp corners to avoid damage from collision, additional oil storage space can also be formed, but the present utility model is not limited to the shape and size of each guide angle.

[0071] Please refer to Figure 1 and Figure 2 As shown in the figure, the rotating member 3 has a rotating shaft 31 and a thrust plate 32, the rotating shaft 31 is rotatably combined in the shaft hole 21 of the bearing 2, and the thrust plate 32 is located at one end of the rotating shaft 31 facing the bottom cover 12, so that the thrust plate 32 can rotate with the rotating shaft 31 between the bearing 2 and the bottom cover 12. The thrust plate 32 and the rotating shaft 31 can be tightly combined or laser welded, and the present utility model is not limited to the combination method.

[0072] Please refer to Figure 4As shown, the shaft 31, the thrust plate 32 and the guide slope 23 form the oil storage space S, in addition, the surface of the thrust plate 32 can form a plurality of dynamic pressure grooves, which can be selected and changed in shape and quantity distribution by those skilled in the art according to requirements, not limited to the drawings disclosed by the utility model, the thrust plate 32 flows in the dynamic pressure groove through the lubricating oil, forms an oil film between the thrust plate 32, the bearing 2 and the bottom cover 12 to generate dynamic pressure effect, which can reduce the friction when the thrust plate 32 rotates, and can also centralize the shaft 31 to reduce the loss of rotational kinetic energy caused by shaft center deflection. In addition, the outer peripheral end of the thrust plate 32 can be aligned with the ring groove 14 on the bottom cover 12, which can not only avoid the thrust plate 32 from colliding with the bottom cover 12, but also store and supply lubricating oil.

[0073] Please refer to Figure 1 and Figure 2 As shown, the positioning ring 4 can be arranged in the installation space M between the pipe body 11 and the bearing 2, the outer side edge of the positioning ring 4 can be tightly fitted to the inner wall of the pipe body 11, so that the positioning ring 4 and the bottom cover 12 are axially opposite, and the bearing 2 is fixed by the top end and the bottom end of the bearing 2 respectively, the positioning ring 4 has a covering part 41 extending from the pipe body 11 radially towards the shaft 31 to cover the inner ring top surface 2a of the bearing 2, for preventing lubricating oil from leaking, in addition, the radial end of the covering part 41 surrounds a through hole 42 for the shaft 31 to pass through.

[0074] In addition, the positioning ring 4 can also form an inclined surface 43 adjacent to the through hole 42 of the covering part 41, and the inclined surface 43 is directed towards the inner ring top surface 2a of the bearing 2, the inclined surface 43 and the inner ring top surface 2a can form an oil guide channel P around the through hole 42, the channel height of the oil guide channel P gradually decreases radially outward adjacent to the through hole 42, so that the lubricating oil leaked between the shaft 31 and the bearing 2 can be guided into the larger opening of the oil guide channel P, and then continue to flow into the gap between the positioning ring 4 and the bearing 2, to avoid the lubricating oil from leaking from the through hole 42 of the positioning ring 4.

[0075] Please refer to Figure 5 and Figure 6As shown, it is another embodiment of the bearing assembly of the utility model, in the bearing 2 can have at least one top surface groove 24, to surround the arrangement is distributed on the inner ring top surface 2a of the bearing 2, and the at least one top surface groove 24 extends along the radial direction, the both ends of each top surface groove 24 are connected with the inner wall surface 2d and the first outer wall surface 2e of the bearing 2 respectively. In this embodiment, the distribution position of the at least one top surface groove 24 is staggered with the at least one inner wall groove 22 and is not directly connected, but the end of the at least one top surface groove 24 can also be connected with the end of the at least one inner wall groove 22, the utility model is not limited to the distribution position or the connection mode of the at least one top surface groove 24 and the at least one inner wall groove 22.

[0076] Please refer to Figure 2 As shown, when the rotating part 3 rotates, lubricating oil can be collected in the gap between the bearing 2 and the positioning ring 4; when the rotation stops and the bearing 2 is inclined, lubricating oil can flow along the at least one top surface groove 24 to the end edge where the inner ring top surface 2a and the inner wall surface 2d meet, and then flow into the oil storage space S along the at least one inner wall groove 22, so that the oil film between the bearing 2 and the rotating part 3 is continuously formed, thereby reducing the friction and abnormal sound of the rotating shaft 31 relative to the bearing 2.

[0077] In summary, the bearing assembly of the utility model can increase the oil film strength between the rotating shaft and the bearing by forming a space for guiding and storing lubricating oil through the bearing structure, thereby reducing the friction between elements and having the effects of prolonging the service life of the bearing and reducing the operating noise.

[0078] Although the utility model has disclosed the above preferred embodiments, it is not intended to limit the utility model, and those skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the utility model, and the changes and modifications still belong to the technical scope protected by the utility model, therefore the protection scope of the utility model should be defined by the claims.

Claims

1. A bearing assembly, characterized in that, include: A sleeve; A bearing is located within a sleeve. The top surfaces of an inner ring and an outer ring of the bearing are axially opposite a bottom surface of the bearing. A shaft hole of the bearing extends from the top surface of the inner ring to the bottom surface. An inner wall surface of the bearing forms a channel around the shaft hole. The bearing has at least one inner wall groove arranged around the inner wall surface. The two ends of each inner wall groove are connected to the top surface of the inner ring and the bottom surface, respectively. The edge corner at the junction of the inner wall surface and the bottom surface forms a guide bevel. The end of the groove of the at least one inner wall groove connects to the guide bevel. The width and height of the guide bevel are both greater than the depth of each inner wall groove. A rotating component has a rotating shaft and a thrust plate. The rotating shaft is rotatably coupled into the shaft hole of the bearing. The thrust plate is coupled to one end of the rotating shaft and located on the bottom side of the bearing. An oil storage space is formed between the rotating shaft, the thrust plate and the guide slope.

2. The bearing assembly as claimed in claim 1, characterized in that, The axial height of the top surface of the inner ring from the bottom surface is greater than the axial height of the top surface of the outer ring from the bottom surface. The top surface of the inner ring and the top surface of the outer ring form a first outer wall surface facing outward in the radial direction, and the top surface of the outer ring and the bottom surface form a second outer wall surface facing outward in the radial direction.

3. The bearing assembly as described in claim 2, characterized in that, The bearing has at least one top surface groove arranged around the top surface of the inner ring of the bearing. The at least one top surface groove extends in a radial direction, and the two ends of each top surface groove are respectively connected to the inner wall surface and the first outer wall surface.

4. The bearing assembly as described in claim 2, characterized in that, The bearing has multiple chamfered edges at the junctions of the inner ring top surface and the inner wall surface, the inner ring top surface and the first outer wall surface, the outer ring top surface and the second outer wall surface, and the second outer wall surface and the bottom surface.

5. The bearing assembly as described in claim 2, characterized in that, The first outer wall surface, the top surface of the outer ring, and the inner wall of one tube of the sleeve form an installation space, and a positioning ring is disposed in the installation space.

6. The bearing assembly as claimed in claim 5, characterized in that, The positioning ring has a cover portion and a through hole. The cover portion extends radially from the tube body toward the shaft to cover the top surface of the inner ring of the bearing. The radial end of the cover portion surrounds the through hole, through which the shaft extends.

7. The bearing assembly as claimed in claim 6, characterized in that, The positioning ring has an inclined surface located near the through hole in the cover portion. The inclined surface faces the top surface of the inner ring of the bearing. The inclined surface and the top surface of the inner ring form an oil guide channel around the through hole. The channel height of the oil guide channel gradually decreases radially outward from the location near the through hole.

8. The bearing assembly as claimed in claim 5, characterized in that, The sleeve has a bottom cover that is axially opposite the positioning ring and closes the bottom end of the tube body. The thrust plate rotates between the bearing and the bottom cover.

9. The bearing assembly as claimed in claim 8, characterized in that, The upper surface of the bottom cover has an annular groove that aligns with the outer peripheral end of the thrust plate of the rotating component.

10. The bearing assembly as claimed in claim 8, characterized in that, The upper surface of the bottom cover has a central groove that aligns with the rotation axis of the rotating component.

11. The bearing assembly as claimed in claim 8, characterized in that, The sleeve has a spacer, the upper and lower ends of which abut against the bottom surface of the bearing and the upper surface of the bottom cover, respectively.

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