Automobile hub oil seal box and hub oil seal assembly

Abstract

The utility model discloses an automobile hub oil seal box and a hub oil seal assembly, and relates to the technical field of box type oil seals, the automobile hub oil seal box comprises an outer ring and an inner ring, a second abutting plate is connected in the outer ring, a first abutting plate is connected in the inner ring, a notch is arranged above the outer surface of the inner ring, the outer surface of the inner ring is connected with a lug plate, and a bolt penetrates through one side of the lug plate. And the upper part in the inner ring is connected with an insertion strip. Through the arrangement of the insertion strip, the notch, the lug plate, the bolt, the first abutting plate and the second abutting plate, the top end of the inner ring can generate certain deformation through the arrangement of the notch, and after the bolt penetrates through the lug plate and is screwed down, the top end of the inner ring shrinks and tightly holds the shaft rod; the phenomenon that the inner ring deviates on the shaft rod after being subjected to impact force is effectively reduced through the friction force between the inner ring and the shaft rod, and the insertion strip penetrates into the shaft rod for locking while the bolt is tightened; and the phenomenon of oil leakage caused by deviation of the inner ring and the outer ring due to the influence of large impact force is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type oil seals, in particular to an automobile wheel hub oil seal box and a wheel hub oil seal assembly. Background Art

[0002] Cassette oil seals, also known as oil seal boxes, are different from ordinary oil seals and are generally composed of two parts: an outer ring and an inner ring. The characteristic of cassette oil seals is their strong anti-pollution ability, and they can be used in occasions with greater pollution, such as axles and wheels of heavy-duty vehicles, concrete machinery, agricultural machinery, etc. The life of cassette oil seals is generally longer than that of ordinary oil seals, so the replacement cycle is longer, and they are also suitable for occasions where it is difficult to replace oil seals.

[0003] During the assembly process of the existing wheel hub oil seal box, the inner and outer rings are mainly installed into the wheel hub by means of interference fit. Oil seal leakage occurs from time to time, which is mainly due to aging and damage of the oil seal, expired lubricating oil, and bearing shedding and damaging the oil seal. Among them, the interference fit is affected by the bumpy driving of the car. The instantaneous large inertia impact force can easily cause the bearing and the oil seal to be stressed, thereby causing a small displacement of the inner or outer ring. Over time, it is easy to cause the sealing lip to shift and separate from the inner ring, causing the sealing lip to directly contact the shaft rod. Due to the particularity of the oil seal box, the shaft rod is usually not specially processed. Therefore, the surface roughness and surface hardness requirements of the shaft are reduced, and it is difficult to achieve complete sealing between the sealing lip and the shaft rod, resulting in oil leakage when the sealing lip contacts the shaft rod. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an automobile wheel hub oil seal box and a wheel hub oil seal assembly to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile wheel hub oil seal box and a wheel hub oil seal assembly, comprising an outer ring and an inner ring, the inner part of the outer ring is connected to a second abutment plate, the inner part of the inner ring is connected to a first abutment plate, a notch is opened above the outer surface of the inner ring, the outer surface of the inner ring is connected to an ear plate, and a bolt penetrates one side of the ear plate, and an insertion strip is connected to the upper part of the inner ring.

[0006] By adopting the above technical solution, the top end of the inner ring can be deformed to a certain extent by setting the notch. After the bolt is passed through the ear plate and tightened, the top end of the inner ring shrinks and holds the shaft rod tightly. The friction between the two can effectively reduce the displacement of the inner ring on the shaft rod after the impact force is received. While tightening the bolt, the insert strip is inserted into the shaft rod to lock it. When the outer ring is offset, the first abutment plate and the second abutment plate abut against each other to limit the outer ring, which effectively reduces the displacement and falling off of the outer ring after the impact force is received.

[0007] Furthermore, the first abutment plate abuts against the second abutment plate.

[0008] By adopting the above technical solution, the first abutment plate and the second abutment plate abut against each other to limit the outer ring, thereby effectively reducing the phenomenon of the outer ring being offset and falling off after being subjected to impact force.

[0009] Furthermore, the longitudinal section of the cutting is triangular, and the cross section of the cutting is arc-shaped.

[0010] By adopting the above technical solution, the insert rod is inserted into the shaft rod for locking while the bolt is tightened, which effectively reduces the occurrence of the phenomenon of the inner ring being deflected after being subjected to impact force.

[0011] Furthermore, a plurality of the cutting strips are provided, and the plurality of cutting strips are distributed at equal intervals.

[0012] By adopting the above technical solution, multiple inserts are inserted into the shaft to increase the locking force, effectively reducing the phenomenon of the inner ring being offset on the shaft after being subjected to impact force.

[0013] Furthermore, the ear plates and bolts are each provided in four numbers, two in a group, and divided into two groups in total, and the two groups of bolts are detachably connected to the two groups of ear plates respectively.

[0014] By adopting the above technical solution, after the bolts are passed through the ear plates and tightened, the top end of the inner ring is contracted to hold the shaft rod tightly, and the friction between the two can effectively reduce the phenomenon of the inner ring deflecting on the shaft rod after being subjected to impact force.

[0015] Furthermore, a sealing lip is connected to the top of the outer ring, and a spring is connected inside the sealing lip, and an outer ring of the sealing lip is provided with an outer anti-slip pattern.

[0016] By adopting the above technical solution, the sealing lip and the spring cooperate to effectively prevent the lubricating grease from leaking out, and the outer anti-skid pattern is connected to the vehicle body by interference fit, thereby preventing the lubricating grease from leaking out of the gap between the outer ring and the vehicle body and increasing the friction between the outer ring and the vehicle body.

[0017] Furthermore, the inner ring is located at the inner circle of the sealing lip, and the bottom of the inner ring is connected with a dustproof lip, and the inner circle of the dustproof lip is provided with inner anti-slip patterns.

[0018] By adopting the above technical solution, the dustproof lip effectively prevents the entry of external dust, and the inner anti-slip pattern is connected to the shaft rod by interference fit, thereby preventing lubricating grease from seeping out of the gap between the inner ring and the shaft rod and increasing the friction between the inner ring and the shaft rod.

[0019] Furthermore, a pressure bearing groove is provided on the top of the sealing lip.

[0020] By adopting the above technical solution, when the outer ring deviates in the direction of the lubricating grease, the contact surface between the lubricating grease and the sealing lip is increased by setting the pressure-bearing groove, so that the outer ring is pushed back by the pressure of the lubricating grease.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] The utility model arranges the insert strip, the notch, the ear plate, the bolt, the first abutment plate and the second abutment plate. The notch can be used to allow the top end of the inner ring to be deformed to a certain extent. After the bolt is passed through the ear plate and tightened, the top end of the inner ring is contracted and tightly embraces the shaft rod. The friction between the two effectively reduces the occurrence of the inner ring deflecting on the shaft rod after being subjected to impact force. While tightening the bolt, the insert strip penetrates into the shaft rod to lock it. When the outer ring deflects, the first abutment plate and the second abutment plate abut against each other to limit the outer ring, effectively reducing the occurrence of the outer ring deflecting and falling off after being subjected to impact force. It effectively reduces the occurrence of oil leakage caused by the displacement of the inner and outer rings due to the influence of large impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 3 For the utility model Figure 2 A magnified view of the structure at A;

[0026] Figure 4 It is a schematic diagram of the explosion structure of the utility model.

[0027] In the figure: 1. outer ring; 2. inner ring; 3. sealing lip; 4. dustproof lip; 5. outer anti-skid pattern; 6. inner anti-skid pattern; 7. spring; 8. insert; 9. notch; 10. ear plate; 11. bolt; 12. first abutment plate; 13. second abutment plate; 14. pressure groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0029] The following describes an embodiment of the utility model based on its overall structure.

[0030] Embodiment 1:

[0031] Automobile wheel hub oil seal box and wheel hub oil seal assembly, such as Figure 1-Figure 4As shown, it includes an outer ring 1 and an inner ring 2. The outer ring 1 is connected to a second abutment plate 13, and the inner ring 2 is connected to a first abutment plate 12. The first abutment plate 12 abuts against the second abutment plate 13. The first abutment plate 12 abuts against the second abutment plate 13 to limit the outer ring 1, effectively reducing the phenomenon of the outer ring 1 being offset and falling off after being subjected to impact force; a notch 9 is opened above the outer surface of the inner ring 2, so that the top of the inner ring 2 can be deformed to a certain extent; the outer surface and the back of the inner ring 2 are respectively connected to four ear plates 10, and the four ear plates 10 Four bolts 11 are respectively passed through one side, and two ear plates 10 and bolts 11 form a group, which are divided into two groups of ear plates 10 and bolts 11. The two groups of bolts 11 are detachably connected to the two groups of ear plates 10 respectively. After the bolts 11 are passed through the ear plates 10 and tightened, the top of the inner ring 2 is contracted and tightly embraces the shaft rod; a plurality of inserts 8 are connected to the upper part of the inner ring 2, and the plurality of inserts 8 are equidistantly distributed. The longitudinal sections of the plurality of inserts 8 are triangular, and the cross sections of the plurality of inserts 8 are arc-shaped. When the bolts 11 are tightened, the inserts 8 are inserted into the shaft rod for locking.

[0032] See also Figure 1 , Figure 2 and Figure 4 In the above embodiment, a sealing lip 3 is connected to the top of the outer ring 1, and a spring 7 is connected inside the sealing lip 3 to effectively prevent lubricating grease from seeping out; an outer ring of the sealing lip 3 is provided with an outer anti-skid pattern 5, which is connected to the vehicle body in an interference fit manner to prevent lubricating grease from seeping out from the gap between the outer ring 1 and the vehicle body, and to increase the friction between the outer ring 1 and the vehicle body; the inner ring 2 is located at the inner ring of the sealing lip 3, and a dustproof lip 4 is connected to the bottom of the inner ring 2 to effectively prevent external dust from entering; an inner ring of the dustproof lip 4 is provided with an inner anti-skid pattern 6, which is connected to the shaft rod in an interference fit manner to prevent lubricating grease from seeping out from the gap between the inner ring 2 and the shaft rod, and to increase the friction between the inner ring 2 and the shaft rod.

[0033] Embodiment 2:

[0034] Automobile wheel hub oil seal box and wheel hub oil seal assembly, such as Figure 1 , Figure 2 and Figure 4 As shown, based on the first embodiment, a pressure groove 14 is provided on the top of the sealing lip 3. When the outer ring 1 deviates in the direction of the lubricating grease, the contact area between the lubricating grease and the sealing lip 3 is increased by the setting of the pressure groove 14, so that the outer ring 1 is pushed back by the pressure of the lubricating grease.

[0035] The implementation principle of the utility model is as follows: first, the installation method of the outer ring 1 is not modified, and it can be completed by the conventional means in the prior art, so this technical solution will not be described in detail. When installing the inner ring 2, the top of the inner ring 2 can be deformed to a certain extent by setting the notch 9. The staff directly sleeves the inner ring 2 on the outside of the shaft, and then the staff passes the bolt 11 through the ear plate 10 and tightens it to make the top of the inner ring 2 shrink and hold the shaft tightly. The friction between the two effectively reduces the phenomenon of the inner ring 2 being offset on the shaft after being impacted, and the bolt 11 is tightened while the strip is inserted. 8 penetrates into the shaft to lock it, and at the same time, the inner anti-skid pattern 6 is still connected to the shaft by interference fit to prevent the lubricating grease from seeping out from the gap between the inner ring 2 and the shaft, and to increase the friction between the inner ring 2 and the shaft. When the outer ring 1 is offset, the first abutment plate 12 and the second abutment plate 13 abut against the outer ring 1 to limit the position, effectively reducing the phenomenon of the outer ring 1 offsetting and falling off after being impacted. When the outer ring 1 is offset in the direction of the lubricating grease, the contact area between the lubricating grease and the sealing lip 3 is increased by setting the pressure groove 14, so that the outer ring 1 is pushed back by the pressure of the lubricating grease.

[0036] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An automobile wheel hub oil seal box and a wheel hub oil seal assembly, comprising an outer ring (1) and an inner ring (2), characterized in that: The outer ring (1) is internally connected to a second abutment plate (13), the inner ring (2) is internally connected to a first abutment plate (12), a notch (9) is provided above the outer surface of the inner ring (2), the outer surface of the inner ring (2) is connected to an ear plate (10), and a bolt (11) penetrates one side of the ear plate (10), and an insert (8) is connected to the upper part of the inner ring (2).

2. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 1, characterized in that: The first abutment plate (12) abuts against the second abutment plate (13).

3. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 1, characterized in that: The longitudinal section of the cutting strip (8) is triangular, and the cross section of the cutting strip (8) is arc-shaped.

4. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 3, characterized in that: A plurality of the inserts (8) are provided, and the plurality of inserts (8) are distributed at equal distances.

5. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 1, characterized in that: The ear plates (10) and bolts (11) are each provided in four pieces, two of which form a group, and are divided into two groups in total, and the two groups of bolts (11) are detachably connected to the two groups of ear plates (10) respectively.

6. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 1, characterized in that: The top of the outer ring (1) is connected to a sealing lip (3), and the inside of the sealing lip (3) is connected to a spring (7), and the outer ring of the sealing lip (3) is provided with an outer anti-slip pattern (5).

7. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 6, characterized in that: The inner ring (2) is located in the inner circle of the sealing lip (3), and the bottom of the inner ring (2) is connected to a dustproof lip (4), and the inner circle of the dustproof lip (4) is provided with an inner anti-slip pattern (6).

8. The automobile wheel hub oil seal box and wheel hub oil seal assembly according to claim 6, characterized in that: A pressure-bearing groove (14) is provided on the top of the sealing lip (3).

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