CN211398300U - Unilateral waterproof type high-load bearing - Google Patents
Unilateral waterproof type high-load bearing Download PDFInfo
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- CN211398300U CN211398300U CN201922193443.8U CN201922193443U CN211398300U CN 211398300 U CN211398300 U CN 211398300U CN 201922193443 U CN201922193443 U CN 201922193443U CN 211398300 U CN211398300 U CN 211398300U
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Abstract
The utility model discloses a waterproof type high load bearing of unilateral, including outer lane, inner circle, ball and keep the ware, the both sides of ball are equipped with equal inner seal circle, and the excircle end of inner seal circle is fixed on outer lane annular draw-in groove, and wherein one side of ball still is equipped with threaded seal circle and external seal circle outward in proper order by the inner seal circle, the inner circle end of external seal circle is fixed on inner circle annular draw-in groove, threaded seal circle sets up between inner seal circle and the external seal circle. The utility model discloses the rational utilization bearing inner space, all there is fine guard action to the moderate operating mode of unilateral fluid impact, bearing part invasion fluid, the bearing has better bearing capacity simultaneously, has very high practical value.
Description
Technical Field
The utility model relates to a machine-building technical field, concretely relates to waterproof type high load bearing of unilateral.
Background
The bearing is an important part in mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the movement process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body. The waterproof bearing in the prior art usually adopts the conflict between two sealing members fixed on the inner and outer rings to realize sealing, but if meet the circumstances of having impact force, water easily gets into inside the bearing from the conflict gap between two sealing members on the inner and outer rings, and then damages the bearing. And the bearing usually has one side of the sealing ring directly contacting with the outside (water, slurry, etc.), or one side of the sealing ring of the bearing is soaked in water or slurry, and the corrosion of the water or slurry often causes the sealing performance of the bearing to fail, thus seriously affecting the service life of the bearing. On the other hand, the bearing channel in the prior art adopts a single-curvature design, the axial play of the bearing is large, and the radial load capacity of the bearing is not high. The disclosure of the patent application is 2019, 10 and 11, and chinese patent document with publication number CN 209483817U discloses a novel dustproof and waterproof bearing, which comprises a bearing inner ring and a bearing outer ring, wherein the bearing outer ring is sleeved outside the bearing inner ring, the bearing inner ring and the bearing outer ring are both provided with ball clamping grooves, bearing balls are clamped inside the ball clamping grooves, the outer sides of the bearing balls are fixed by a claw-bending retainer, the bearing inner ring and the bearing outer ring are both provided with V-shaped clamping grooves, a sealing ring is clamped inside the V-shaped clamping grooves, the bearing can be clamped inside the bearing by arranging the V-shaped clamping grooves inside, the sealing ring made of rubber is adopted to block dust and water, so that the dustproof and waterproof capabilities of the bearing are improved, wherein the sealing ring adopts a three-lip structure to contact with the inner ring, and no matter whether the bearing is used under high and low temperature conditions and in a severe environment, the sealing ring, impurities, water vapor and the like are not easy to enter the bearing. However, the openings at the two sides of the bearing are sealed by the sealing rings, and the protection effect is poor. On the other hand, the bearing channel adopts a single-curvature design, the axial movement of the bearing is large, and the radial load capacity of the bearing is not high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve prior art's bearing waterproof performance poor, problem that working life is short provides a waterproof type high load bearing of unilateral, and it is good to have waterproof performance, long service life's characteristics.
The utility model discloses a bearing channel that another aim at solved prior art adopts the design of single camber, and the axial float of bearing is great, and the radial load capacity of bearing is not high problem, provides a waterproof type high-load bearing of unilateral, and it is little to have the axial float, and the radial load capacity of bearing is high characteristics.
The utility model adopts a specific technical scheme for solving the technical problems that the unilateral waterproof high-load bearing comprises an outer ring, an inner ring, a ball and a retainer, wherein the ball is arranged between the outer ring and the inner ring through the retainer, a first opening and a second opening are formed between the outer ring and the inner ring at two sides of the ball, two outer ring annular clamping grooves are arranged on the inner circumferential surface of the outer ring, the outer ring annular clamping grooves are respectively positioned in the first opening and the second opening, inner sealing rings are symmetrically arranged in the first opening and the second opening relative to the ball, the outer end of the inner sealing ring is fixed on the outer ring annular clamping groove, the second opening is provided with a thread sealing ring and an outer sealing ring from the inner sealing ring outwards in sequence, the outer circumferential surface of the inner ring is provided with an inner ring annular clamping groove, the inner end of the outer sealing ring is fixed on the inner ring annular clamping groove, the thread sealing ring is arranged between the inner sealing ring and the outer sealing ring. The bearing seal of the utility model adopts an asymmetric structure, one side needing water proofing has three layers of sealing structures, and each sealing structure has different functions; the inner sealing ring is fixed on the outer ring through interference, the inner lip edge of the inner sealing ring is abutted and the inner ring rotates, so that water flow can be prevented from invading; the inner diameter and the outer diameter of the thread sealing ring are respectively provided with a plurality of layers of thread-shaped lip edges, the thread sealing ring is not fixed with the inner ring or the outer ring, and simultaneously contacts with the flanges of the inner ring and the outer ring to generate a certain interference magnitude, and the thread sealing ring rotates relative to the inner ring and the outer ring, so that water flow or impurities entering the thread sealing ring are pushed out through the outward pushing action when the thread sealing ring rotates; the outer sealing ring is fixed on the inner ring by interference of the inner diameter of the outer sealing ring, the outer sealing ring rotates relative to the outer ring when in work, and a gap is formed between the lip edge of the outer side of the outer sealing ring and the outer ring, so that moisture or impurities can be discharged; but when the outer lip edge is in strong impact with the outside, the outer lip edge is sealed with the outer ring, so that water flow or slurry is prevented from entering. Like this, through set up multilayer seal structure in one side that the bearing needs be waterproof, can solve prior art's bearing waterproof performance poor, problem that working life is short has promoted the waterproof performance of bearing greatly, has prolonged the working life of bearing.
Preferably, the inner contact surface of the inner ring, which is in contact with the balls, is formed by symmetrically intersecting and connecting two arc surfaces, the radius of the arc surface of the inner contact surface is larger than that of the steel balls, and two contact points are arranged between each ball and the inner contact surface. The inner contact surface of the steel ball of the utility model is symmetrically connected by two cambered surfaces to form a double-channel structure, and the inner side of the steel ball is provided with two contact points, thus dispersing the contact stress and improving the radial load capacity of the bearing; because the two arcs are mutually crossed, the axial movement space of the bearing is compressed, and the sealing effect can be prevented from being influenced by overlarge axial movement.
As preferred, the excircle end of interior sealing washer is equipped with the outer lane snap ring that matches with outer lane ring groove, the interior circle end of interior sealing washer is equipped with straight banding elasticity lip limit, the outer lane snap ring of interior sealing washer is fixed with outer lane ring groove joint, the elasticity lip limit of interior sealing washer and the outer periphery butt of inner circle, the inner circle is equipped with the conical surface with the butt portion on elasticity lip limit, the conical vertex angle of conical surface is 80 to 100 degrees, and during elasticity lip limit and inner circle butt, straight banding elasticity lip limit is bending structure. The inner lip edge of the inner sealing ring rotates relative to the inner ring, and has good protection effect on impact and leakage of fluid (water and slurry) by means of the lip edge bounce and the structural characteristics.
Preferably, the inner circle end of the outer sealing ring is provided with an inner circle clamping ring matched with the inner circle annular clamping groove, and the outer circle end of the outer sealing ring is provided with an inclined wedge-shaped outer lip edge; the inner ring clamping ring of the outer sealing ring is clamped and fixed with the inner ring annular clamping groove, the wedge-shaped outer lip edge of the outer sealing ring is in clearance fit with the inner circumferential surface of the outer ring through 0.1-0.3 mm, a conical surface is arranged at the matching part of the outer ring and the wedge-shaped outer lip edge, and the cone apex angle of the conical surface is 80-100 degrees. The outer sealing ring is fixed on the inner ring by interference of the inner diameter of the outer sealing ring, a gap of 0.1-0.3 mm is reserved between the wedge-shaped outer lip edge of the outer sealing ring and the outer ring of the bearing, and the outer sealing ring rotates relative to the outer ring when the outer sealing ring works. The contact part of the bearing outer ring and the outer sealing ring is an inclined plane, and the roughness of the inclined plane is less than or equal to 0.8 mu m; the outer lip edge of the outer sealing ring is soft, and when fluid violently impacts the lip edge, the lip edge is tightly attached to the inclined surface, so that more water is prevented from entering the bearing. When no fluid impact exists outside, the fluid discharged by the middle threaded sealing ring can flow out through the gap between the outer sealing ring and the outer ring. The outer sealing ring has the main functions of preventing large-particle impurities from entering the bearing, sealing when external fluid violently impacts the bearing, and generating a gap for discharging fluid between the thread sealing ring and the outer sealing ring when no fluid impacts.
Preferably, the inner seal ring and the outer seal ring are both composed of a metal framework and rubber, the metal framework is a circular ring with a cross section of an L shape, the rubber is wrapped at two ends and one side of the metal framework, and the short side of the L-shaped circular ring is located on one side close to the inner ring clamping ring or the outer ring clamping ring.
Preferably, the thread sealing ring is composed of a metal framework, a thread lip edge made of rubber and having a thread shape on the outer surface, the metal framework is a circular ring with a U-shaped cross section, thread structures formed by the thread lip edge are located on two sides of the U-shaped edge of the metal framework, and the thread sealing ring is in interference fit with the outer ring and the inner ring. The outer diameter and the inner diameter of the thread sealing ring are respectively provided with a plurality of thread lips, the outer diameter of the thread sealing ring rotates relative to the inner diameter of the outer ring, in the rotating process, the thread lips of the thread sealing ring generate outward thrust for impurities entering the thread sealing ring, the impurities entering the thread sealing ring lips are discharged, and the impurities are prevented from crossing the thread sealing ring and entering the inner part. Typically the angle of inclination of the thread is around 3 °. The sealing ring is a key point for preventing water or sundries from entering the bearing, and a plurality of sealing structures have poor dynamic waterproof effect because the seepage of fluid when the sealing element rotates relative to the ferrule cannot be avoided. Meanwhile, the thread sealing ring rubs with the edge of the inner ring and the outer ring to receive reaction force towards the inner side, so that the thread sealing ring is close to the inner sealing ring during working, the inner lip edge of the inner sealing ring is forced to generate stronger interference with the inner ring, the bearing is further protected, and meanwhile the problem of insufficient interference after the framework of the inner sealing ring loses elasticity can be prevented.
Preferably, the radius of the cambered surface of the inner contact surface is 1.06 to 1.064 times of the radius of the steel ball, and the center distance of the two circular arcs is 0.0664 to 0.0665 times of the radius of the steel ball. The bearing inner ring adopts a design mode of two circular arcs which are mutually staggered, so that the steel ball and each channel have two contact points, and the contact stress is dispersed, the radial and axial clearance ratio of the bearing of the utility model is about 1:2, and the radial and axial clearance ratio of the conventional deep groove ball bearing is about 1: 10; the radial load capacity of the bearing is improved by more than 40%; because the two arcs are mutually crossed, the axial float space of the bearing is compressed, and the sealing effect can be prevented from being influenced by overlarge axial float.
Preferably, the waterproof high-load bearing is a non-axially symmetric structure, the ball center plane of the bearing is arranged to deviate from the axial center plane of the bearing, and the ball center plane of the bearing is close to the first opening side. The utility model discloses a non-axial symmetry structure, need waterproof one side to possess a large amount of spaces that are used for arranging seal structure like this.
The utility model has the advantages that: it has solved prior art's bearing waterproof performance poor effectively, and the bearing channel of problem and prior art that working life is short adopts the design of single camber, and the axial float of bearing is great, and the radial load capacity of bearing is not high problem, the utility model discloses a waterproof type high load bearing of unilateral rational utilization of bearing inner space has all had fine guard action to the moderate operating mode of unilateral fluid impact, bearing part invasion fluid, makes this type of bearing sealing performance obtain promoting, and the bearing has better bearing capacity simultaneously, has very high practical value.
Drawings
Fig. 1 is a schematic cross-sectional view of a one-sided waterproof high-load bearing according to the present invention;
fig. 2 is a schematic cross-sectional structure of the inner seal ring of the present invention;
fig. 3 is a schematic cross-sectional structure diagram of the outer sealing ring of the present invention;
fig. 4 is a schematic cross-sectional structure of the threaded seal ring of the present invention;
FIG. 5 is a schematic structural view of the steel ball and inner contact surface of the present invention;
fig. 6 is a structural sectional view of the single-sided waterproof high-load bearing of the present invention.
In the figure: 1. the novel ball bearing comprises an outer ring, 2. an inner ring, 3. balls, 4. a retainer, 5. a first opening, 6. a second opening, 7. an outer ring annular clamping groove, 8. an inner sealing ring, 9. a thread sealing ring, 10. an outer sealing ring, 11. an inner ring annular clamping groove, 12. an inner contact surface, 13. an outer ring clamping ring, 14. an elastic lip edge, 15. an inner ring clamping ring, 16. a wedge-shaped outer lip edge, 17. a metal framework, 18. a thread lip edge, R. an arc surface radius and L. the center distance of two circular arcs.
Detailed Description
The following provides a further description of the embodiments of the present invention with reference to the accompanying drawings.
Example 1
In embodiment 1 shown in fig. 1, a one-sided waterproof high-load bearing includes an outer ring 1, an inner ring 2, balls 3, and a retainer 4, the balls are disposed between the outer ring and the inner ring through the retainer, a first opening 5 and a second opening 6 are formed between the outer ring and the inner ring on both sides of the balls, the waterproof high-load bearing is a non-axially symmetric structure, a ball center plane of the bearing is disposed to be deviated from an axial center plane of the bearing, and the ball center plane of the bearing is close to one side of the first opening. The inner circumferential surface of the outer ring is provided with two outer ring annular clamping grooves 7 (see fig. 2), the outer ring annular clamping grooves are respectively positioned in a first opening and a second opening, inner sealing rings 8 are symmetrically arranged in the first opening and the second opening relative to the balls, the outer end of each inner sealing ring is fixed on the outer ring annular clamping groove, the second opening is further provided with a threaded sealing ring 9 and an outer sealing ring 10 from the inner sealing ring to the outside in sequence, the outer circumferential surface of the inner ring is provided with an inner ring annular clamping groove 11 (see fig. 3), the inner end of each outer sealing ring is fixed on the inner ring annular clamping groove, and the threaded sealing ring is arranged between the inner sealing ring and the outer sealing ring.
The inner contact surface 12 of the inner ring, which is in contact with the ball, is formed by symmetrically intersecting and connecting two cambered surfaces, the radius of the cambered surface of the inner contact surface is larger than that of the steel ball, the radius R of the cambered surface of the inner contact surface is 1.06-1.064 times of that of the steel ball, and the center distance L of the two arcs is 0.0664-0.0665 times of that of the steel ball; there are two contact points between each ball and the inner contact surface (see fig. 5).
The outer circle end of interior sealing washer is equipped with the outer lane snap ring 13 that matches with outer lane ring groove, the interior circle end of interior sealing washer is equipped with straight banding elasticity lip 14, the outer lane snap ring of interior sealing washer is fixed with outer lane ring groove joint, the elasticity lip of interior sealing washer and the outer periphery butt of inner circle, the inner circle is equipped with the conical surface with the butt portion on elasticity lip, the conical vertex angle of conical surface is 90 degrees, and when elasticity lip and inner circle butt, straight banding elasticity lip is bending structure. The inner circle end of the outer sealing ring is provided with an inner circle clamping ring 15 matched with the inner circle annular clamping groove, and the outer circle end of the outer sealing ring is provided with an inclined wedge-shaped outer lip edge 16; the inner ring clamping ring of the outer sealing ring is fixedly clamped with the inner ring annular clamping groove, the wedge-shaped outer lip edge of the outer sealing ring is matched with the inner circumferential surface of the outer ring through a gap of 0.1-0.3 mm, a conical surface is arranged at the matching part of the outer ring and the wedge-shaped outer lip edge, and the cone apex angle of the conical surface is 90 degrees. The inner seal circle with the outer seal circle comprises metal framework 17 and rubber, metal framework is the ring of transversal personally submitting the L type, rubber parcel is in metal framework's both ends and one side, the minor lateral of L type ring is located the one side that is close to inner circle snap ring or outer lane snap ring.
The thread sealing ring is composed of a metal framework, a rubber material and a thread lip edge 18 (see figure 4) with a thread shape on the outer surface, the metal framework is a circular ring with a U-shaped cross section, the thread-shaped structure composed of the thread lip edge is positioned on two sides of the U-shaped edge of the metal framework, and the thread sealing ring is in interference fit with the outer ring and the inner ring.
The bearing seal of the utility model adopts an asymmetric structure, one side needing water proofing has three layers of sealing structures, and each sealing structure has different functions; the inner sealing ring is fixed on the outer ring through interference, the inner lip edge of the inner sealing ring is abutted and the inner ring rotates, so that water flow can be prevented from invading; the inner diameter and the outer diameter of the thread sealing ring are respectively provided with a plurality of layers of thread-shaped lip edges, the thread sealing ring is not fixed with the inner ring or the outer ring, and simultaneously contacts with the flanges of the inner ring and the outer ring to generate a certain interference magnitude, and the thread sealing ring rotates relative to the inner ring and the outer ring, so that water flow or impurities entering the thread sealing ring are pushed out through the outward pushing action when the thread sealing ring rotates; the outer sealing ring is fixed on the inner ring by interference of the inner diameter of the outer sealing ring, the outer sealing ring rotates relative to the outer ring when in work, and a gap is formed between the lip edge of the outer side of the outer sealing ring and the outer ring, so that moisture or impurities can be discharged; but when the outer lip edge is in strong impact with the outside, the outer lip edge is sealed with the outer ring, so that water flow or slurry is prevented from entering. Like this, through set up multilayer seal structure in one side that the bearing needs be waterproof, can solve prior art's bearing waterproof performance poor, problem that working life is short has promoted the waterproof performance of bearing greatly, has prolonged the working life of bearing. On the other hand, the inner contact surface of the steel ball of the utility model is symmetrically connected by two cambered surfaces to form a double-channel structure, and the inner side of the steel ball is provided with two contact points, thus dispersing the contact stress and improving the radial load capacity of the bearing; because the two arcs are mutually crossed, the axial movement space of the bearing is compressed, and the sealing effect can be prevented from being influenced by overlarge axial movement.
In addition to the above embodiments, the technical features or technical data of the present invention can be selected and combined again within the scope disclosed in the claims and the specification of the present invention to constitute a new embodiment, and those embodiments not described in detail in the present invention can be easily implemented by those skilled in the art without creative efforts, so that those embodiments not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (8)
1. A single-side waterproof high-load bearing comprises an outer ring (1), an inner ring (2), balls (3) and a retainer (4), wherein the balls are arranged between the outer ring and the inner ring through the retainer, a first opening (5) and a second opening (6) are formed between the outer ring and the inner ring on two sides of the balls, the bearing is characterized in that two outer ring annular clamping grooves (7) are arranged on the inner circumferential surface of the outer ring, the outer ring annular clamping grooves are respectively positioned in the first opening and the second opening, inner sealing rings (8) are symmetrically arranged in the first opening and the second opening relative to the balls, the outer ends of the inner sealing rings are fixed on the outer ring annular clamping grooves, the second opening is provided with a threaded sealing ring (9) and an outer sealing ring (10) from the inner sealing ring to the outside in sequence, the outer circumferential surface of the inner ring is provided with an inner ring annular clamping groove (11), and the inner ends of the outer sealing ring are, the thread sealing ring is arranged between the inner sealing ring and the outer sealing ring.
2. The unilateral waterproof high-load bearing according to claim 1, wherein the inner contact surface (12) of the inner race contacting the balls is formed by symmetrically intersecting two arc surfaces, the radius of the arc surface of the inner contact surface is larger than that of the steel balls, and each ball has two contact points with the inner contact surface.
3. The unilateral waterproof high-load bearing according to claim 1, wherein the outer circle end of the inner seal ring is provided with an outer circle clamping ring (13) matched with the outer circle annular clamping groove, the inner circle end of the inner seal ring is provided with a straight elastic lip edge (14), the outer circle clamping ring of the inner seal ring is clamped and fixed with the outer circle annular clamping groove, the elastic lip edge of the inner seal ring is abutted against the outer circumferential surface of the inner ring, the abutting part of the inner ring and the elastic lip edge is provided with a conical surface, the vertex angle of the conical surface is 80-100 degrees, and when the elastic lip edge is abutted against the inner ring, the straight elastic lip edge is of a bending structure.
4. The one-sided waterproof high-load bearing according to claim 1, wherein the inner circle end of the outer sealing ring is provided with an inner circle snap ring (15) matched with the inner circle annular snap groove, and the outer circle end of the outer sealing ring is provided with an inclined wedge-shaped outer lip edge (16); the inner ring clamping ring of the outer sealing ring is clamped and fixed with the inner ring annular clamping groove, the wedge-shaped outer lip edge of the outer sealing ring is in clearance fit with the inner circumferential surface of the outer ring through 0.1-0.3 mm, a conical surface is arranged at the matching part of the outer ring and the wedge-shaped outer lip edge, and the cone apex angle of the conical surface is 80-100 degrees.
5. The unilateral waterproof high-load bearing according to claim 1, wherein the inner seal ring and the outer seal ring are both formed by a metal framework (17) and rubber, the metal framework is a circular ring with an L-shaped cross section, the rubber is wrapped at two ends and one side of the metal framework, and the short side of the L-shaped circular ring is positioned at one side close to the inner ring snap ring or the outer ring snap ring.
6. The unilateral waterproof high-load bearing according to claim 1, wherein the thread sealing ring is composed of a metal framework and a thread lip (18) which is made of rubber and has a thread shape on the outer surface, the metal framework is a circular ring with a U-shaped cross section, thread structures formed by the thread lip are positioned on two sides of the U-shaped edge of the metal framework, and the thread sealing ring is in interference fit with the outer ring and the inner ring.
7. The unilateral waterproof high-load bearing according to claim 2, wherein the inner contact surface has a radius of arc surface (R) of 1.06 to 1.064 times the radius of the steel ball, and a center-to-center distance (L) of the two arcs is 0.0664 to 0.0665 times the radius of the steel ball.
8. The one-sided waterproof high-load bearing according to any one of claims 1 to 7, wherein the waterproof high-load bearing has a non-axially symmetric structure, and the ball center plane of the bearing is disposed offset from the axial center plane of the bearing and is adjacent to the side of the first opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922193443.8U CN211398300U (en) | 2019-12-09 | 2019-12-09 | Unilateral waterproof type high-load bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922193443.8U CN211398300U (en) | 2019-12-09 | 2019-12-09 | Unilateral waterproof type high-load bearing |
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| Publication Number | Publication Date |
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| CN211398300U true CN211398300U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922193443.8U Active CN211398300U (en) | 2019-12-09 | 2019-12-09 | Unilateral waterproof type high-load bearing |
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| CN (1) | CN211398300U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431852A (en) * | 2020-10-12 | 2021-03-02 | 宁波美亚特精密传动部件有限公司 | Novel conical bearing |
| CN112431850A (en) * | 2020-10-12 | 2021-03-02 | 宁波美亚特精密传动部件有限公司 | Bearing with adjustable sealing structure |
| CN114776714A (en) * | 2022-04-28 | 2022-07-22 | 洛阳轴承研究所有限公司 | Contact bearing seal structure |
-
2019
- 2019-12-09 CN CN201922193443.8U patent/CN211398300U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431852A (en) * | 2020-10-12 | 2021-03-02 | 宁波美亚特精密传动部件有限公司 | Novel conical bearing |
| CN112431850A (en) * | 2020-10-12 | 2021-03-02 | 宁波美亚特精密传动部件有限公司 | Bearing with adjustable sealing structure |
| CN112431852B (en) * | 2020-10-12 | 2022-07-08 | 宁波美亚特精密传动部件有限公司 | Conical bearing |
| CN112431850B (en) * | 2020-10-12 | 2022-07-08 | 宁波美亚特精密传动部件有限公司 | Bearing with adjustable sealing structure |
| CN114776714A (en) * | 2022-04-28 | 2022-07-22 | 洛阳轴承研究所有限公司 | Contact bearing seal structure |
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Address after: 310022 No. 416 Shiqiao Road, Xiacheng District, Zhejiang, Hangzhou Patentee after: Hangzhou Renben Motor Bearings Co.,Ltd. Address before: 310022 No. 416 Shiqiao Road, Xiacheng District, Zhejiang, Hangzhou Patentee before: HANGZHOU C&U MIDDLE BEARING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |