Special high-precision deep groove ball bearing for water pump

Abstract

The invention belongs to the technical field of bearings, particularly relates to a high-precision deep groove ball bearing special for a water pump, and provides the following scheme aiming at the problems that a sealing cover is easy to wear, the sealing performance is influenced and the clamping connection is unstable in the prior art: the high-precision deep groove ball bearing comprises a water pump bearing inner ring, high-precision deep groove balls, a retainer and a water pump bearing outer ring, a deep groove in the outer side of the water pump bearing inner ring is in rolling connection with the surface of the high-precision deep groove ball, the surface of the high-precision deep groove ball is in rolling connection with the inner side of the retainer, and the structure of the metal rubber composite sealing cover, the water pump bearing inner ring, the water pump bearing outer ring, the L-shaped groove and the V-shaped groove is innovated, so that the service life of the bearing is greatly prolonged; the sealing structure of the bearing is more compact and fit, the waterproof performance is greatly improved, and the clamping mechanism is further arranged, so that the metal-rubber composite sealing cover can be effectively fixed on the inner ring of the water pump bearing and is prevented from falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and in particular to a high-precision deep groove ball bearing dedicated to water pumps. Background Art

[0002] With the rapid development of the new water pump industry, the demand for high-precision waterproof deep groove ball bearings is increasing. High-precision waterproof bearings can maintain good performance in relatively harsh working environments and are suitable for applications such as the joint parts or rotating parts of industrial robots, precision rotary tables, CNC machine tools, agricultural machinery equipment, and medical machinery. Therefore, the development of high-waterproof bearings is of great significance for meeting market demands, improving product quality, and technological level.

[0003] The Chinese patent document with the application number 201710146672.7 discloses a water pump bearing, including: an inner support member; an outer support member surrounding the inner support member; a seal located on both axial sides of the water pump bearing and forming a sealed cavity with the inner support member and the outer support member; a plurality of rolling elements located in the sealed cavity, and the outer support member and the inner support member rotate relative to each other through the rolling elements; a ventilation portion is provided in the inner support member to communicate the sealed cavity with the outside. When the water pump bearing operates at high speed, the gas expanded due to high temperature in the sealed cavity can be discharged to the outside through the ventilation portion, thereby reducing the pressure in the sealed cavity and avoiding damage and aging of the components near the water pump bearing. In particular, this can prevent the formation of gaps between the seal and the inner support member and between the seal and the outer support member, prevent the leakage of the grease in the sealed cavity, and ensure the normal operation of the water pump bearing.

[0004] However, there are also some problems in the prior art. For example, the dust-proof grooves on the inner and outer rings of current existing products are mostly "V"-shaped grooves, and the metal dust covers generally use rubber seals and metal seals. The disadvantage of the "V"-shaped groove design is that the contact surface with the seal cover is relatively large. When the bearing rotates at high speed, the contact between the groove and the seal cover also rotates, which easily wears the seal cover. Once the seal cover is worn, the sealing performance will be greatly reduced, dust enters frequently, and grease leaks seriously, thereby reducing the service life of the product. Moreover, the connection between the seal cover and the bearing is not tight enough, and there is a risk of detachment. Summary of the Invention

[0005] Based on the technical problems of easy wear of the seal cover, affecting the sealing performance, and unstable clamping in the background art, the present invention proposes a high-precision deep groove ball bearing dedicated to water pumps.

[0006] A high-precision deep groove ball bearing dedicated to a water pump proposed by the present invention includes an inner ring of the water pump bearing, high-precision deep groove balls, a cage, and an outer ring of the water pump bearing. The deep groove on the outer side of the inner ring of the water pump bearing is in rolling connection with the surface of the high-precision deep groove balls. The surface of the high-precision deep groove balls is in rolling connection with the inner side of the cage. The deep groove on the inner side of the outer ring of the water pump bearing is in rolling connection with the surface of the high-precision deep groove balls. An L-shaped groove is opened at the edge of the outer side of the inner ring of the water pump bearing. A V-shaped groove is opened at the edge of the inner side of the outer ring of the water pump bearing. A metal-rubber composite seal cover is clamped in the space between the V-shaped groove and the L-shaped groove. The metal-rubber composite seal cover includes a metal dust cover, a rubber ring, and V-shaped teeth. The metal dust cover is adhered to the rubber ring. The V-shaped teeth are integrally processed with the metal dust cover. The V-shaped teeth of the metal dust cover are meshed and clamped with the V-shaped groove of the outer ring of the water pump bearing. A clamping mechanism is rotatably connected to the surface of the metal dust cover. Through the structural innovation of the metal-rubber composite seal cover, the inner ring of the water pump bearing, the outer ring of the water pump bearing, the L-shaped groove, and the V-shaped groove, the service life of the bearing is greatly increased, the sealing structure of the bearing is made more compact and fitting, the waterproof performance is greatly increased, and a clamping mechanism is also provided, which can effectively fix the metal-rubber composite seal cover on the inner ring of the water pump bearing to prevent it from falling off.

[0007] Preferably, the clamping mechanism includes a large gear ring, small bevel gears, a lead screw, and a transmission component. There are four small bevel gears, a lead screw, and a transmission component. The teeth of the four small bevel gears are meshed with the teeth of the large gear ring. The lead screw is key-connected to the small bevel gear. The lead screw is threadedly connected to the transmission component to drive the large gear ring to rotate. The large gear ring can drive the four small bevel gears to rotate. The four small bevel gears can drive the lead screw to rotate. The lead screw can drive the transmission component to rotate.

[0008] Preferably, the transmission component includes a slide bar, a transmission rod, a connecting wheel, and a clamping component. One end of the lead screw away from the small bevel gear is threadedly connected to the screw hole of the slide bar. The ends of the slide bar away from the lead screw are hinged to one end of the transmission rod. The other end of the transmission rod is key-connected to the surface of the connecting wheel. The connecting wheel is key-connected to the clamping component. The lead screw can drive the slide bar to move outwards by means of the thread. The slide bar can drive the transmission rod to move outwards. The transmission rod and the connecting wheel are in an eccentric structure. The transmission rod can drive the connecting wheel to rotate. The connecting wheel can drive the clamping component to rotate.

[0009] Preferably, the clamping component includes a rotating shaft and an eccentric wheel. The center of the connecting wheel is key-connected to the front end of the rotating shaft. One end of the rotating shaft away from the connecting wheel is key-connected to the hole of the eccentric wheel. The connecting wheel can drive the rotating shaft to rotate. The rotating shaft and the eccentric wheel are in an eccentric state. The rotating shaft can drive the eccentric wheel to rotate and press against the inner ring of the water pump bearing, which can effectively fix the metal-rubber composite seal cover on the inner ring of the water pump bearing to prevent it from falling off.

[0010] Preferably, a support ring is integrally processed on the inner side of the surface of the metal dust cover. The outer side of the support ring is rotatably sleeved with the inner side of the large gear ring. The lead screw is rotatably sleeved with the metal dust cover. The support ring is used to support and stabilize the large gear ring. The large gear ring is rotatably arranged with the support ring through a bearing, and the lead screw is rotatably arranged with the metal dust cover through a bearing.

[0011] Preferably, the teeth of the large gear ring are conical teeth. Connecting holes are formed around the surface of the large gear ring. Anti-slip lines are formed on the outer side of the large gear ring. A tightening bolt is threadedly connected to the screw hole on the inner side of the support ring. The tightening bolt abuts against the large gear ring. The tooth structure of the large gear ring enables it to mesh with the small bevel gear. The connecting holes and the anti-slip lines can facilitate the user to rotate the large gear ring.

[0012] Preferably, limiting sliding grooves are formed around the surface of the metal dust cover. The inner part of the limiting sliding groove is slidably connected with the surface of the sliding strip. The sliding strip is slidably arranged with the limiting sliding groove through a slide rail to guide the sliding strip.

[0013] Preferably, the surface of the rotating shaft is rotatably sleeved with the hole of the metal dust cover. An eccentric structure is formed between the rotating shaft and the eccentric wheel. The rotating shaft is rotatably arranged with the metal dust cover through a bearing. The eccentric structure of the rotating shaft and the eccentric wheel facilitates driving the eccentric wheel to move.

[0014] Preferably, the V-shaped grooves are evenly distributed on the edge of the inner ring of the outer ring of the water pump bearing. The V-shaped teeth are evenly distributed on the outer side of the metal dust cover. The V-shaped grooves and the V-shaped teeth can be precisely fitted.

[0015] Preferably, the inner side of the rubber ring is slidably connected with the L-shaped groove of the inner ring of the water pump bearing. The inner part of the V-shaped groove is precisely meshed with the surface of the V-shaped tooth. A highly lubricating material can be used between the rubber ring and the L-shaped groove.

[0016] The beneficial effects of the present invention are as follows: 1. The metal-rubber composite sealing cover is designed as a composite sealing of metal and rubber. The part in contact with the outer ring of the water pump bearing is metal, and the part in contact with the inner ring of the water pump bearing is a rubber ring; 2. Small "V"-shaped tooth openings are all rolled on the outer circle edge of the outer ring of the water pump bearing to form V-shaped grooves. Around the metal dust cover of the metal-rubber composite sealing cover, V-shaped teeth are stamped. The two can be perfectly fitted, preventing the sliding and rotation of the metal dust cover during the operation of the bearing, and avoiding wear and leakage of grease; 3. The notch of the inner ring of the water pump bearing is designed as an "L" shape, which reduces the contact area with the rubber ring compared with the "V" shape notch, reducing wear. Coupled with the perfect fit between the rubber sealing design of the metal-rubber composite sealing cover and the L-shaped groove of the inner ring of the water pump bearing, it effectively prevents the entry of dust; Innovations in the structures of the metal-rubber composite sealing cover, the inner ring of the water pump bearing, the outer ring of the water pump bearing, the L-shaped groove, and the V-shaped groove have greatly increased the service life of the bearing, made the sealing structure of the bearing more compact and fitting, greatly enhanced the waterproof performance, and also provided a clamping mechanism that can effectively fix the metal-rubber composite sealing cover on the inner ring of the water pump bearing to prevent it from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 6 is a front view structural schematic diagram of a high-precision deep groove ball bearing dedicated for water pumps proposed by the present invention; Figure 2 FIG. 9 is an internal structural schematic diagram of a high-precision deep groove ball bearing dedicated for water pumps proposed by the present invention; Figure 3 FIG. 12 is a top view sectional structural schematic diagram of a high-precision deep groove ball bearing dedicated for water pumps proposed by the present invention; Figure 4 FIG. 15 is a three-dimensional structural schematic diagram of a slide bar of a high-precision deep groove ball bearing dedicated for water pumps proposed by the present invention; Figure 5 FIG. 18 is a three-dimensional structural schematic diagram of a large gear ring of a high-precision deep groove ball bearing dedicated for water pumps proposed by the present invention.

[0018] In the figures: 1, inner ring of the water pump bearing; 2, high-precision deep groove balls; 3, cage; 4, outer ring of the water pump bearing; 5, L-shaped groove; 6, V-shaped groove; 7, metal dust cover; 8, rubber ring; 9, V-shaped teeth; 10, large gear ring; 11, small bevel gear; 12, lead screw; 13, slide bar; 14, transmission rod; 15, connecting wheel; 16, rotating shaft; 17, eccentric wheel; 18, support ring; 19, anti-slip pattern; 20, connecting hole; 21, tightening bolt; 22, limit sliding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described below in conjunction with specific embodiments.

[0020] Embodiment Reference Figures 1-5, in this embodiment, a high-precision deep groove ball bearing for a water pump is proposed, which includes an inner ring of the water pump bearing 1, high-precision deep groove balls 2, a cage 3, and an outer ring of the water pump bearing 4. The deep groove on the outer side of the inner ring of the water pump bearing 1 is in rolling connection with the surface of the high-precision deep groove balls 2. The surface of the high-precision deep groove balls 2 is in rolling connection with the inner side of the cage 3. The deep groove on the inner side of the outer ring of the water pump bearing 4 is in rolling connection with the surface of the high-precision deep groove balls 2. An L-shaped groove 5 is opened at the edge on the outer side of the inner ring of the water pump bearing 1. A V-shaped groove 6 is opened at the edge on the inner side of the outer ring of the water pump bearing 4. A metal-rubber composite seal cover is clamped in the space between the V-shaped groove 6 and the L-shaped groove 5. The metal-rubber composite seal cover includes a metal dust cover 7, a rubber ring 8, and V-shaped teeth 9. The metal dust cover 7 is bonded to the rubber ring 8. The V-shaped teeth 9 are integrally processed with the metal dust cover 7. The V-shaped teeth 9 of the metal dust cover 7 are meshed and clamped with the V-shaped groove 6 of the outer ring of the water pump bearing 4. A clamping mechanism is rotatably connected to the surface of the metal dust cover 7; The clamping mechanism includes a large gear ring 10, small bevel gears 11, a lead screw 12, and a transmission component. There are four small bevel gears 11, a lead screw 12, and a transmission component. The teeth of the four small bevel gears 11 are all meshed with the teeth of the large gear ring 10. The lead screw 12 is key-connected to the small bevel gear 11. The lead screw 12 is thread-connected to the transmission component to drive the large gear ring 10 to rotate. The large gear ring 10 can drive the four small bevel gears 11 to rotate. The four small bevel gears 11 can drive the lead screw 12 to rotate. The lead screw 12 can drive the transmission component to rotate; The transmission component includes a slide bar 13, a transmission rod 14, a connecting wheel 15, and a clamping component. One end of the lead screw 12 away from the small bevel gear 11 is thread-connected to the screw hole of the slide bar 13. One end of the slide bar 13 away from the lead screw 12 is hinged to one end of the transmission rod 14. The other end of the transmission rod 14 is key-connected to the surface of the connecting wheel 15. The connecting wheel 15 is key-connected to the clamping component. The lead screw 12 can drive the slide bar 13 to move outwards by using the thread. The slide bar 13 can drive the transmission rod 14 to move outwards. The transmission rod 14 and the connecting wheel 15 are in an eccentric structure. The transmission rod 14 can drive the connecting wheel 15 to rotate. The connecting wheel 15 can drive the clamping component to rotate; The clamping component includes a rotating shaft 16 and an eccentric wheel 17. The center of the connecting wheel 15 is key-connected to the front end of the rotating shaft 16. One end of the rotating shaft 16 away from the connecting wheel 15 is key-connected to the hole of the eccentric wheel 17. The connecting wheel 15 can drive the rotating shaft 16 to rotate. The rotating shaft 16 and the eccentric wheel 17 are in an eccentric state. The rotating shaft 16 can drive the eccentric wheel 17 to rotate and squeeze the inner ring of the water pump bearing 1, which can effectively fix the metal-rubber composite seal cover on the inner ring of the water pump bearing 1 and prevent it from falling off; On the inner side of the surface of the metal dust cover 7, a support ring 18 is integrally processed. The outer side of the support ring 18 is rotationally sleeved with the inner side of the large gear ring 10. The lead screw 12 is rotationally sleeved with the metal dust cover 7. The support ring 18 is used to support and stabilize the large gear ring 10. The large gear ring 10 is rotationally arranged with the support ring 18 through a bearing. The lead screw 12 is rotationally arranged with the metal dust cover 7 through a bearing; The teeth of the large gear ring 10 are conical teeth. Connecting holes 20 are formed around the surface of the large gear ring 10. Anti-slip lines 19 are formed on the outer side of the large gear ring 10. A tightening bolt 21 is threadedly connected to the screw hole on the inner side of the support ring 18. The tightening bolt 21 abuts against the large gear ring 10. The tooth structure of the large gear ring 10 enables it to mesh with the small bevel gear 11. The connecting holes 20 and the anti-slip lines 19 facilitate the user to rotate the large gear ring 10; Limit sliding grooves 22 are formed around the surface of the metal dust cover 7. The inside of the limit sliding grooves 22 is slidably connected to the surface of the sliding strip 13. The sliding strip 13 is slidably arranged with the limit sliding grooves 22 through a slide rail to guide the sliding strip 13; The surface of the rotating shaft 16 is rotationally sleeved with the hole of the metal dust cover 7. The rotating shaft 16 and the eccentric wheel 17 have an eccentric structure. The rotating shaft 16 is rotationally arranged with the metal dust cover 7 through a bearing. The eccentric structure of the rotating shaft 16 and the eccentric wheel 17 facilitates driving the eccentric wheel 17 to move; V-shaped grooves 6 are evenly distributed on the edge of the inner side of the outer ring of the water pump bearing 4. V-shaped teeth 9 are evenly distributed on the outer side of the metal dust cover 7. The V-shaped grooves 6 and the V-shaped teeth 9 can be precisely fitted; The inner side of the rubber ring 8 is slidably connected to the L-shaped groove 5 of the inner ring of the water pump bearing 1. The inside of the V-shaped groove 6 is precisely meshed with the surface of the V-shaped tooth 9. A highly lubricating material can be used between the rubber ring 8 and the L-shaped groove 5; Innovations in the structures of the metal-rubber composite sealing cover, the inner ring of the water pump bearing 1, the outer ring of the water pump bearing 4, the L-shaped groove 5, and the V-shaped groove 6 have greatly increased the service life of the bearing, made the sealing structure of the bearing more compact and fitting, greatly increased the waterproof performance, and a clamping mechanism is also provided, which can effectively fix the metal-rubber composite sealing cover on the inner ring of the water pump bearing 1 to prevent it from falling off.

[0021] Working principle: The metal-rubber composite sealing cover is designed as a composite seal combining metal and rubber. The part in contact with the outer ring 1 of the water pump bearing is metal, and the part in contact with the inner ring 4 of the water pump bearing is the rubber ring 8. Small "V"-shaped teeth are formed on the entire outer circumference of the outer ring 1 of the water pump bearing, forming a V-shaped groove 6. Around the metal dust cover 7 of the metal-rubber composite sealing cover, V-shaped teeth 9 are stamped, and the two can fit perfectly, preventing the sliding and rotation of the metal dust cover 7 during the operation of the bearing, avoiding wear and leakage of grease. The notch of the inner ring 4 of the water pump bearing is designed as an "L" shape, which reduces the contact area with the rubber ring 8 compared with the "V" - shaped notch, reducing wear. Coupled with the perfect fit between the rubber sealing design of the metal-rubber composite sealing cover and the "L" - shaped groove 5 of the inner ring 1 of the water pump bearing, it effectively prevents the entry of dust. The structural innovation of the metal-rubber composite sealing cover, the inner ring 1 of the water pump bearing, the outer ring 4 of the water pump bearing, the "L" - shaped groove 5 and the V-shaped groove 6 greatly increases the service life of the bearing, makes the sealing structure of the bearing more compact and fitting, greatly increases the waterproof performance, and a clamping mechanism is also provided. The large gear ring 10 can be driven to rotate through the anti-slip pattern 19 and the connecting hole 20. The large gear ring 10 can drive the four small bevel gears 11 to rotate. The four small bevel gears 11 can drive the lead screw 12 to rotate. The lead screw 12 can drive the slider 13 to move outwards by using the thread. The slider 13 can drive the transmission rod 14 to move outwards. There is an eccentric structure between the transmission rod 14 and the connecting wheel 15. The transmission rod 14 can drive the connecting wheel 15 to rotate. The connecting wheel 15 can drive the rotating shaft 16 to rotate. There is an eccentric state between the rotating shaft 16 and the eccentric wheel 17. The rotating shaft 16 can drive the eccentric wheel 17 to rotate and squeeze the inner ring 1 of the water pump bearing, which can effectively fix the metal-rubber composite sealing cover on the inner ring 1 of the water pump bearing and prevent it from falling off.

[0022] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A high-precision deep groove ball bearing for a water pump, comprising a water pump bearing inner ring (1), high-precision deep groove rolling balls (2), a cage (3) and a water pump bearing outer ring (4), characterized in that, The deep groove on the outer side of the inner ring of the water pump bearing (1) is in rolling connection with the surface of the high-precision deep groove ball (2). The surface of the high-precision deep groove ball (2) is in rolling connection with the inner side of the cage (3). The deep groove on the inner side of the outer ring of the water pump bearing (4) is in rolling connection with the surface of the high-precision deep groove ball (2). An L-shaped groove (5) is provided at the edge of the outer side of the inner ring of the water pump bearing (1). A V-shaped groove (6) is provided at the edge of the inner side of the outer ring of the water pump bearing (4). A metal-rubber composite sealing cover is clamped in the space between the V-shaped groove (6) and the L-shaped groove (5). The metal-rubber composite sealing cover includes a metal dust cover (7), a rubber ring (8), and V-shaped teeth (9). The metal dust cover (7) is bonded to the rubber ring (8). The V-shaped teeth (9) are integrally processed with the metal dust cover (7). The V-shaped teeth (9) of the metal dust cover (7) are meshed and clamped with the V-shaped groove (6) of the outer ring of the water pump bearing (4). A clamping mechanism is rotatably connected to the surface of the metal dust cover (7).

2. A high-precision deep groove ball bearing dedicated to a water pump according to claim 1, characterized in that, The clamping mechanism includes a large gear ring (10), a small bevel gear (11), a lead screw (12), and a transmission component. There are four small bevel gears (11), lead screws (12), and transmission components respectively. The teeth of the four small bevel gears (11) are meshed with the teeth of the large gear ring (10). The lead screw (12) is key-connected to the small bevel gear (11). The lead screw (12) is threadedly connected to the transmission component.

3. The high-precision deep groove ball bearing dedicated to a water pump according to claim 2, characterized in that, The transmission component includes a slide bar (13), a transmission rod (14), a connecting wheel (15), and a clamping component. One end of the lead screw (12) away from the small bevel gear (11) is threadedly connected to the threaded hole of the slide bar (13). One end of the slide bar (13) away from the lead screw (12) is hinged to one end of the transmission rod (14). The other end of the transmission rod (14) is key-connected to the surface of the connecting wheel (15). The connecting wheel (15) is key-connected to the clamping component.

4. A high-precision deep groove ball bearing specifically for water pumps according to claim 3, characterized in that, The clamping component includes a rotating shaft (16) and an eccentric wheel (17). The center of the connecting wheel (15) is key-connected to the front end of the rotating shaft (16). One end of the rotating shaft (16) away from the connecting wheel (15) is key-connected to the hole of the eccentric wheel (17).

5. A high-precision deep groove ball bearing for a water pump according to claim 2, characterized in that, A support ring (18) is integrally processed on the inner side of the surface of the metal dust cover (7). The outer side of the support ring (18) is rotatably sleeved with the inner side of the large gear ring (10). The lead screw (12) is rotatably sleeved with the metal dust cover (7).

6. The high-precision deep groove ball bearing dedicated to a water pump according to claim 5, characterized in that, The teeth of the large gear ring (10) are tapered teeth. Connecting holes (20) are provided around the surface of the large gear ring (10). Anti-slip lines (19) are provided on the outer side of the large gear ring (10). A tightening bolt (21) is threadedly connected to the threaded hole on the inner side of the support ring (18). The tightening bolt (21) abuts against the large gear ring (10).

7. A high-precision deep groove ball bearing dedicated to a water pump according to claim 3, characterized in that, Limit sliding grooves (22) are provided around the surface of the metal dust cover (7). The inside of the limit sliding grooves (22) is in sliding connection with the surface of the slide bar (13).

8. A high-precision deep groove ball bearing for a water pump according to claim 4, characterized in that, The surface of the rotating shaft (16) is rotatably sleeved with the hole of the metal dust cover (7). There is an eccentric structure between the rotating shaft (16) and the eccentric wheel (17).

9. A high-precision deep groove ball bearing dedicated to a water pump according to claim 1, characterized in that, The V-shaped grooves (6) are evenly distributed at the edge of the inner side of the outer ring of the water pump bearing (4). The V-shaped teeth (9) are evenly distributed on the outer side of the metal dust cover (7).

10. A high-precision deep groove ball bearing dedicated to a water pump according to claim 1, characterized in that, The inner side of the rubber ring (8) is slidably connected to the L-shaped groove (5) of the inner ring of the water pump bearing (1), and the inside of the V-shaped groove (6) is precisely meshed with the surface of the V-shaped tooth (9).

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