Hub bearing sealing device

Abstract

The utility model relates to bearing sealing technical field, concretely is a kind of hub bearing sealing device, including bearing outer ring, bearing inner race and two rotary sealing mechanism, rotary sealing mechanism rotates between bearing outer ring and bearing inner race, rotary sealing mechanism includes annular connecting frame and sealing plate, connecting frame rotates between bearing outer ring and bearing inner race, and two connecting frames are located at the both sides of bearing outer ring and bearing inner race respectively, and multiple sealing plates are detachably fixed in connecting frame. Solve the friction between the sealing device in the existing hub bearing and bearing inner and outer ring is larger, and the problem of influence bearing rotation.

Description

Technical Field

[0001] This utility model relates to the field of bearing sealing technology, specifically a wheel hub bearing sealing device. Background Technology

[0002] The main function of wheel hub bearing seals is to prevent grease leakage and block the intrusion of external contaminants, thereby ensuring normal lubrication and operational stability of the bearing. The sealing structure forms a physical barrier between the bearing's interior and the external environment, preventing increased friction caused by grease loss, while also preventing water, sediment, dust, and other impurities from entering the bearing, thus preventing wear and corrosion.

[0003] In the prior art, for example, Chinese Patent Publication No. CN219865932U discloses a hub bearing with a sealing cap structure. This sealing device seals the bearing, more easily preventing lubricant leakage during rotation and keeping the lubricant within the bearing, thus increasing its service life. The sealing device in this technical solution includes a metal sealing component and a rubber sealing component. Furthermore, as can be seen from the accompanying drawings, the metal and rubber sealing components abut against the inner and outer rings of the bearing. This results in significant friction between the sealing device and the bearing during rotation, affecting the smoothness of bearing rotation and potentially damaging the sealing device, thus reducing its sealing effectiveness. Utility Model Content

[0004] This invention proposes a wheel hub bearing sealing device, which solves the problem that the existing wheel hub bearing sealing device has a large frictional force between the inner and outer rings of the bearing, thus affecting the rotation of the bearing.

[0005] To achieve the above objectives, this utility model proposes a wheel hub bearing sealing device, including a bearing outer ring, a bearing inner ring, and two rotating sealing mechanisms; The rotating sealing mechanism rotates between the outer ring and the inner ring of the bearing; The rotating sealing mechanism includes an annular connecting frame and a sealing plate; The connecting bracket rotates between the outer ring and the inner ring of the bearing, and the two connecting brackets are respectively located on both sides of the outer ring and the inner ring of the bearing; Multiple sealing plates are detachably fixed within the connecting frame.

[0006] Preferably, the connecting frame includes an outer connecting ring and an inner connecting ring, and the outer connecting ring and the inner connecting ring are fixed together by a plurality of connecting rods; The sealing plates are detachably fixed in the mounting holes formed between the outer connecting ring, the inner connecting ring and the connecting rods.

[0007] Preferably, the bearing outer ring is sleeved outside the outer connecting ring, and the bearing outer ring is rotatably connected to the outer connecting ring; The inner connecting ring is sleeved outside the inner ring of the bearing, and the inner connecting ring is rotatably connected to the inner ring of the bearing.

[0008] Preferably, the mounting hole formed between the outer connecting ring, the inner connecting ring, and the plurality of connecting rods has a plurality of annular grooves on its wall. The sealing plate has multiple locking ridges on its peripheral edge that match the locking groove, and the locking ridges are embedded in the locking groove.

[0009] Preferably, the outer side of the sealing plate is provided with a connecting groove.

[0010] Preferably, annular external grooves are provided on both sides of the inner wall of the outer ring of the bearing; Both sides of the outer wall of the inner ring of the bearing are provided with annular inner grooves.

[0011] Preferably, the outer wall of the outer connecting ring is provided with a plurality of roller grooves, and a roller rotates in the roller grooves, with the exposed part of the roller rolling in the outer sliding groove. The inner wall of the inner connecting ring is provided with a plurality of the roller grooves, and the rollers rotate in the roller grooves, with the exposed part of the rollers rolling in the inner sliding grooves.

[0012] Preferably, it also includes two annular guard plates, which are detachably fixed to the outer side of the connecting frame.

[0013] Preferably, the side of the guard plate facing the connecting frame is provided with a plurality of connecting blocks, the plurality of connecting blocks being positioned corresponding to a plurality of connecting slots, and the connecting blocks being embedded in the connecting slots.

[0014] Preferably, the sidewall of the connecting groove is provided with a plurality of annular slots. The peripheral side of the connecting block is provided with a plurality of locking ridges that match the locking slots, and the locking ridges are embedded in the locking slots.

[0015] This utility model has the following beneficial effects: 1. The rollers on the outer wall of the outer connecting ring roll in the outer groove, and the rollers on the inner wall of the inner connecting ring roll in the inner groove. This reduces the friction between the outer connecting ring and the outer ring of the bearing, as well as between the inner connecting ring and the inner ring of the bearing, thereby reducing the wear of the bearing sealing device and extending its service life. 2. When a sealing plate is damaged or its sealing effect is reduced, the damaged sealing plate can be replaced individually, without replacing the entire sealing device, thus reducing maintenance costs. 3. The protective plate can protect the connecting frame and sealing plate, isolate them from the outside environment, reduce the wear and tear on the connecting frame and sealing plate, and extend their service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the wheel hub bearing sealing device described in this utility model; Figure 2 This is a schematic diagram of the structure of the protective plate in the wheel hub bearing sealing device of this utility model; Figure 3 This is a schematic diagram of the connecting frame, bearing outer ring, and bearing inner ring in the wheel hub bearing sealing device of this utility model.

[0017] In the diagram: 1. Bearing outer ring; 11. Outer groove; 2. Bearing inner ring; 21. Inner groove; 3. Connecting frame; 31. Outer connecting ring; 32. Inner connecting ring; 33. Connecting rod; 34. Slot 1; 35. Roller groove; 36. Roller; 4. Sealing plate; 41. Connecting groove; 42. Slot 2; 43. Slot 1; 5. Protective plate; 51. Connecting block; 52. Slot 2; 6. Outer ball ring; 7. Inner ball ring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0019] This utility model proposes a wheel hub bearing sealing device, such as Figure 1 As shown, it includes an outer bearing ring 1, an inner bearing ring 2, and two rotating sealing mechanisms. The rotating sealing mechanisms rotate between the outer bearing ring 1 and the inner bearing ring 2. The rotating sealing mechanisms include an annular connecting frame 3 and sealing plates 4. The connecting frame 3 rotates between the outer bearing ring 1 and the inner bearing ring 2, and the two connecting frames 3 are located on both sides of the outer bearing ring 1 and the inner bearing ring 2, respectively. Multiple sealing plates 4 are detachably fixed inside the connecting frame 3.

[0020] like Figure 1 As shown, the connecting frame 3 includes an outer connecting ring 31 and an inner connecting ring 32. The outer connecting ring 31 and the inner connecting ring 32 are fixed together by multiple connecting rods 33. Multiple sealing plates 4 are detachably fixed in multiple mounting holes formed between the outer connecting ring 31, the inner connecting ring 32 and the multiple connecting rods 33.

[0021] like Figure 1 As shown, the outer ring 1 of the bearing is sleeved on the outer connecting ring 31, and the outer ring 1 of the bearing is rotatably connected to the outer connecting ring 31. The inner connecting ring 32 is sleeved on the outside of the inner ring 2 of the bearing, and the inner connecting ring 32 is rotatably connected to the inner ring 2 of the bearing.

[0022] like Figure 1 As shown, multiple annular slots 34 are provided on the wall of the mounting hole formed between the outer connecting ring 31, the inner connecting ring 32 and the multiple connecting rods 33; The periphery of the sealing plate 4 is provided with multiple locking ridges 43 that match the locking groove 34, and the locking ridges 43 are embedded in the locking groove 34.

[0023] like Figure 1 As shown, a connecting groove 41 is provided on the outer side of the sealing plate 4.

[0024] like Figure 3 As shown, annular external grooves 11 are provided on both sides of the inner wall of the outer ring 1 of the bearing; Both sides of the outer wall of the inner ring 2 of the bearing are provided with annular inner grooves 21.

[0025] like Figure 3 As shown, the outer wall of the outer connecting ring 31 is provided with multiple roller grooves 35, and rollers 36 rotate in the roller grooves 35. The exposed part of the rollers 36 rolls in the outer sliding groove 11. The inner wall of the inner connecting ring 32 is provided with multiple roller grooves 35, and rollers 36 rotate in the roller grooves 35. The exposed part of the rollers 36 rolls in the inner sliding groove 21.

[0026] like Figure 1 and Figure 2 As shown, it also includes two annular guard plates 5, which are detachably fixed to the outer side of the connecting frame 3.

[0027] like Figure 2 As shown, the side of the guard plate 5 facing the connecting frame 3 is provided with multiple connecting blocks 51, and the positions of the multiple connecting blocks 51 correspond to the positions of the multiple connecting grooves 41. The connecting blocks 51 are embedded in the connecting grooves 41.

[0028] like Figure 1 and Figure 2 As shown, the side wall of the connecting groove 41 is provided with multiple annular slots 42; The peripheral side of the connecting block 51 is provided with multiple locking ridges 52 that match the locking slot 42, and the locking ridges 52 are embedded in the locking slot 42.

[0029] Both the Karen 1-43 and Karen 2-52 are made of rubber.

[0030] like Figure 1 and Figure 3 As shown, an outer ball ring 6 is provided in the middle of the inner wall of the outer ring 1 of the bearing; An inner ball ring 7 is provided in the middle of the outer wall of the inner ring 2 of the bearing; A retainer is provided between the outer ball ring 6 and the inner ball ring 7 to evenly separate multiple balls, and the multiple balls are installed in the retainer.

[0031] By employing this utility model, when the bearing rotates, the rollers 36 on the outer wall of the outer connecting ring 31 roll in the outer sliding groove 11, and the rollers 36 on the inner wall of the inner connecting ring 32 roll in the inner sliding groove 21. At the same time, the contact area between the outer connecting ring and the outer ring 1 of the bearing, as well as between the inner connecting ring and the inner ring 2 of the bearing, is reduced. This reduces the friction between the outer connecting ring and the outer ring 1 of the bearing, as well as between the inner connecting ring and the inner ring 2 of the bearing, thereby reducing the wear of the bearing sealing device and extending its service life. Setting multiple sealing plates 4 can prevent the lubrication between the inner ring 2 and the outer ring 1 of the bearing from being exposed. At the same time, it can also prevent dust, mud and other impurities from entering the bearing and affecting the bearing operation. When a sealing plate 4 is damaged or the sealing effect is reduced, the damaged sealing plate 4 can be replaced individually without replacing the entire sealing device, thus reducing maintenance costs. The sealing plate 4 is fixed in the mounting hole formed between the outer connecting ring 31, the inner connecting ring 32 and multiple connecting rods 33 by embedding. At the same time, the slot 34 and the ridge 43 cooperate to increase the connection stability between the sealing plate 4 and the connecting frame 3, as well as the sealing performance of the sealing plate 4, and facilitate the replacement of the sealing plate 4. The protective plate 5 can protect the connecting frame 3 and the sealing plate 4, isolate the connecting frame 3 and the sealing plate 4 from the outside world, reduce the wear of the connecting frame 3 and the sealing plate 4, and extend the service life of the connecting frame 3 and the sealing plate 4. Moreover, the protective plate 5 is fixed to the connecting frame 3 by the connecting block 51 being embedded in the connecting groove 41. If the protective plate 5 is damaged, it can be easily replaced. At the same time, the cooperation between the second locking prism 52 and the second locking groove 42 can improve the connection stability between the protective plate 5 and the connecting frame 3 and the sealing plate 4.

[0032] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A wheel hub bearing sealing device, characterized in that, It includes an outer bearing ring (1), an inner bearing ring (2), and two rotating sealing mechanisms; The rotating sealing mechanism rotates between the outer ring (1) and the inner ring (2) of the bearing; The rotating sealing mechanism includes an annular connecting frame (3) and a sealing plate (4); The connecting frame (3) rotates between the outer ring (1) and the inner ring (2) of the bearing, and the two connecting frames (3) are located on both sides of the outer ring (1) and the inner ring (2) of the bearing, respectively; Multiple sealing plates (4) are detachably fixed inside the connecting frame (3).

2. The wheel hub bearing sealing device according to claim 1, characterized in that, The connecting frame (3) includes an outer connecting ring (31) and an inner connecting ring (32), and the outer connecting ring (31) and the inner connecting ring (32) are fixed together by a plurality of connecting rods (33); The sealing plates (4) are detachably fixed in the mounting holes formed between the outer connecting ring (31), the inner connecting ring (32) and the connecting rods (33).

3. The wheel hub bearing sealing device according to claim 2, characterized in that, The bearing outer ring (1) is sleeved on the outer connecting ring (31), and the bearing outer ring (1) is rotatably connected to the outer connecting ring (31); The inner connecting ring (32) is sleeved on the outer side of the bearing inner ring (2), and the inner connecting ring (32) is rotatably connected to the bearing inner ring (2).

4. The wheel hub bearing sealing device according to claim 2, characterized in that, Multiple annular slots (34) are provided on the wall of the mounting hole formed between the outer connecting ring (31), the inner connecting ring (32) and the multiple connecting rods (33); The sealing plate (4) has a plurality of locking ridges (43) on its peripheral edge that match the locking groove (34), and the locking ridges (43) are embedded in the locking groove (34).

5. The wheel hub bearing sealing device according to claim 1, characterized in that, The outer side of the sealing plate (4) is provided with a connecting groove (41).

6. The wheel hub bearing sealing device according to claim 2, characterized in that, Both sides of the inner wall of the outer ring (1) of the bearing are provided with annular outer grooves (11); Both sides of the outer wall of the bearing inner ring (2) are provided with annular inner grooves (21).

7. The wheel hub bearing sealing device according to claim 6, characterized in that, The outer wall of the outer connecting ring (31) is provided with a plurality of roller grooves (35), and a roller (36) rotates in the roller groove (35). The exposed part of the roller (36) rolls in the outer sliding groove (11). The inner wall of the inner connecting ring (32) is provided with a plurality of the roller grooves (35), and the rollers (36) rotate in the roller grooves (35), with the exposed part of the rollers (36) rolling in the inner sliding groove (21).

8. The wheel hub bearing sealing device according to claim 5, characterized in that, It also includes two annular guard plates (5), which are detachably fixed to the outer side of the connecting frame (3).

9. The wheel hub bearing sealing device according to claim 8, characterized in that, The guard plate (5) has multiple connecting blocks (51) on its side facing the connecting frame (3). The multiple connecting blocks (51) correspond to the positions of the multiple connecting grooves (41), and the connecting blocks (51) are embedded in the connecting grooves (41).

10. The wheel hub bearing sealing device according to claim 9, characterized in that, The sidewall of the connecting groove (41) is provided with a plurality of annular slots (42); The peripheral side of the connecting block (51) is provided with a plurality of card ridges (52) that match the card slot (42), and the card ridges (52) are embedded in the card slot (42).

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