Combined sealing element for automobile hub

Abstract

The utility model discloses a combined sealing element for an automobile hub, particularly relates to the technical field of hub sealing, and effectively prevents water, dust and other sundries from entering the hub and protects a hub bearing from being damaged due to the close fit and multiple sealing design of a sleeve and a sealing sleeve. The stability and the sealing performance of the sealing piece are ensured through the design of the spring and the sealing sleeve, the sealing piece has high rigidity through the reinforcing design of the first iron piece and the second iron piece, the good dustproof function is provided through the design of the side lip and the auxiliary lip, the interior of the hub is protected against invasion of dust and other particulate matter, the service life of the sealing piece is prolonged, and the service life of the hub is prolonged. The influence of the external environment on the sealing piece is effectively prevented, the dynamic sealing effect of the sealing piece is guaranteed, the contact area between the whole sealing piece and air is increased through the multi-device combination and the labyrinth type lip design, dust prevention is achieved through the multi-lip shape, meanwhile, the whole heat dissipation effect is improved, and heat dissipation and performance of the hub are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub seals, in particular to a combined seal for an automobile wheel hub. Background Art

[0002] In order to increase the load-bearing capacity of automobile wheel hub bearing units, it is often necessary to increase the diameter of the internal steel balls. However, under the condition of limited external dimensions, the installation space of the seals will inevitably be compressed, which ultimately leads to a simple seal structure design, a small number of sealing lips, and poor sealing performance.

[0003] like Figure 1 The single-layer seal structure shown has a fixed lip 15 at the top, which is completely fixed to the connecting sleeve 17 through the outer ring groove 16, and a sealing lip 18 at the bottom to prevent the ingress of external water and dust and prevent the leakage of internal grease;

[0004] Figure 1 The sealing and waterproof properties of the wheel hub bearing unit sealing structure shown basically meet the requirements, but the overall device is an integrated design and fits tightly, which makes the seal's own heat dissipation capacity insufficient. During use, the overall aging speed is accelerated, which in turn leads to an increase in the cost of vehicle use. If it is changed to a split design, it is necessary to pay attention to whether its own dustproof performance will decrease. In order to solve the above problems, we propose a car wheel hub combined seal to solve the above problems. Utility Model Content

[0005] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted in this utility model is:

[0007] A combined seal for an automobile wheel hub comprises a sleeve, which is in a cylindrical structure and is sleeved on the automobile wheel hub. A sealing sleeve is sleeved on the outer surface of the sleeve for preventing water, dust and debris from entering the interior of the wheel hub to protect the wheel hub bearing. A spring is sleeved on the outer ring wall at the top of the sealing sleeve for driving itself to fit tightly with the sleeve, and the spring surrounds the sealing sleeve.

[0008] Preferably, the outer ring wall of the sleeve is in the shape of an irregular groove, the sealing sleeve is in close contact with the bottom of the inner cavity of the outer groove of the sleeve, and receiving platforms are fixedly connected on both sides of one end of the sleeve. The receiving platforms on both sides are symmetrically distributed along the axis of the sleeve, and one end of the sleeve is close to the receiving platform and in close contact with it.

[0009] Preferably, the side of the sealing sleeve close to the sleeve is filled with a first iron piece, and the outer ring of the sealing sleeve away from the sleeve is filled with a second iron piece, the first iron piece surrounds the sleeve and contacts the sleeve through the sealing sleeve, the second iron piece surrounds the sealing sleeve and does not contact the first iron piece, and the first iron piece and the second iron piece are both made of carbon steel.

[0010] Preferably, a partition chamber penetrating through the inner cavity of the sealing sleeve is provided on one side of the inner cavity of the sealing sleeve, the opening of the partition chamber is communicated with the outside of the sealing sleeve, and the partition chamber is provided between the first iron piece and the second iron piece.

[0011] Preferably, a side lip is fixedly connected to a side of the sealing sleeve close to the partition chamber, and an end of the side lip away from the sleeve is in contact with the first iron piece.

[0012] Preferably, a plurality of auxiliary lips for dust prevention are provided on one side of the sealing sleeve close to the sleeve, and an end of the plurality of auxiliary lips away from the sealing sleeve is in close contact with the first iron piece, an oil chamber is formed between the plurality of auxiliary lips, and an oil chamber for sealing is also formed between the auxiliary lip closest to the receiving platform and the side lip.

[0013] Preferably, the outer ring wall of the sealing sleeve is provided with an outer ring sleeve, and the outer ring sleeve is made of rubber material.

[0014] Preferably, one end of the sealing sleeve away from the sleeve is fixedly connected with a lip rubber, and the lip rubber is sleeved on the surface of the first iron piece and tightly connected thereto.

[0015] By adopting the above technical solution, the beneficial effects achieved by the utility model are:

[0016] The close fit with the sleeve and the sealing sleeve and the multiple sealing design in the utility model effectively prevent water, dust and other debris from entering the inside of the wheel hub, and protect the wheel hub bearing from damage. The design of the spring and the sealing sleeve ensures the stability and sealing of the seal, and can maintain a good sealing state for a long time. The reinforced design of the first iron piece and the second iron piece makes the seal have higher rigidity and is not easy to deform, thereby improving the stability and durability of the seal. The design of the side lip and the auxiliary lip provides better dustproof function, protects the inside of the wheel hub from the invasion of dust and other particles, and extends the service life of the seal. The setting of the outer ring rubber ensures the sealing of the outer ring and effectively prevents the influence of the external environment on the seal. The lip rubber has elastic characteristics and can effectively seal the shaft, ensuring the dynamic sealing effect of the seal. The multi-device combination and the labyrinth lip design increase the contact area between the overall seal and the air, and at the same time use multiple lips to prevent dust, while improving the overall heat dissipation effect, which is beneficial to the heat dissipation and performance of the wheel hub, and can provide effective protection and performance optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the existing wheel hub seal of the utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of the seal of the utility model.

[0019] Figure 3 This is a cross-sectional view of the internal structure of the seal of the utility model.

[0020] In the figure: 1. sleeve; 2. auxiliary lip; 3. first iron piece; 4. measuring lip; 5. second iron piece; 6. outer ring sleeve; 7. spring; 8. lip rubber; 9. sealing sleeve; 10. receiving platform; 11. partition chamber; 12. oil chamber; 13. fixed sleeve; 14. sealing rubber; 15. fixed lip; 16. outer ring groove; 17. connecting sleeve; 18. sealing lip. DETAILED DESCRIPTION

[0021] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Figure 1-Figure 3 As shown, the utility model provides a combined seal for an automobile wheel hub, including a sleeve 1. The sleeve 1 is in a cylindrical structure and is sleeved on the automobile wheel hub. A sealing sleeve 9 is sleeved on the outer surface of the sleeve 1 for preventing water, dust and other debris from entering the interior of the wheel hub to protect the wheel hub bearing. A spring 7 is sleeved on the outer ring wall at the top of the sealing sleeve 9 for driving itself to fit closely with the sleeve 1. The spring 7 surrounds the sealing sleeve 9 for one week. The sleeve 1 prevents the shaft from being worn. The spring 7 is made of carbon steel, which provides a certain binding force to the oil seal lip and prolongs the service life of the oil seal.

[0023] The outer ring wall of the sleeve 1 is in an irregular groove shape, the sealing sleeve 9 is in close contact with the bottom of the inner cavity of the outer groove of the sleeve 1, and the two sides of one end of the sleeve 1 are fixedly connected with a receiving platform 10. The receiving platforms 10 on both sides are symmetrically distributed along the axis of the sleeve 1, and one end of the sleeve 1 is close to the receiving platform 10 and in close contact with it.

[0024] In addition, a first iron piece 3 is filled on one side of the sealing sleeve 9 close to the sleeve 1, and a second iron piece 5 is filled on the outer ring of the sealing sleeve 9 away from the sleeve 1. The first iron piece 3 surrounds the sleeve 1 and contacts the sleeve 1 through the sealing sleeve, and the second iron piece 5 surrounds the sealing sleeve 9 and does not contact the first iron piece 3. Both the first iron piece 3 and the second iron piece 5 are made of carbon steel. The basic skeleton increases the rigidity so that the oil seal will not be easily deformed.

[0025] A partition chamber 11 penetrating the sealing sleeve 9 is provided on one side of the inner cavity thereof. The opening of the partition chamber 11 is communicated with the outside of the sealing sleeve 9 . The partition chamber 11 is provided between the first iron piece 3 and the second iron piece 5 .

[0026] The sealing sleeve 9 is fixedly connected to a side of the partition chamber 11 with a measuring lip 4, and the end of the measuring lip 4 away from the sleeve 1 contacts the first iron member 3. The side lip prevents dust from invading the main lip from the inside of the oil seal, provides a protective barrier for the main lip of the oil seal, and provides better dustproof function.

[0027] A plurality of auxiliary lips 2 for dust prevention are provided on one side of the sealing sleeve 9 close to the sleeve 1. The ends of the plurality of auxiliary lips 2 away from the sealing sleeve 9 are in close contact with the first iron member 3. An oil chamber 12 is formed between the plurality of auxiliary lips 2. An oil chamber 12 for sealing is also formed between the auxiliary lip 2 closest to the receiving platform 10 and the side lip. The multi-lip design can provide better dust prevention effect.

[0028] The outer ring wall of the sealing sleeve 9 is provided with an outer ring sleeve 6 , which is made of rubber material and has a rubber outer periphery to ensure the sealing performance of the outer ring sleeve 6 .

[0029] The end of the sealing sleeve 9 away from the sleeve 1 is fixedly connected with a lip rubber 8, which is sleeved on the surface of the first iron piece 3 and tightly connected thereto. The dynamic sealing surface has elastic properties and has a very good sealing effect on the shaft.

[0030] How it works

[0031] The cylindrical structure of the sleeve 1 fits tightly with the automobile wheel hub, and the sealing sleeve 9 is sleeved on the outer surface of the sleeve 1 to form an effective sealing structure to prevent water, dust and other debris from entering the interior of the wheel hub and protect the wheel hub bearing.

[0032] The spring 7 is located on the outer ring wall at the top of the sealing sleeve 9, and ensures the stability and sealing of the seal by driving itself to fit tightly with the sleeve 1.

[0033] The outer ring wall of the sleeve 1 is in the shape of an irregular groove, and the sealing sleeve 9 is in close contact with the bottom of the inner cavity of the outer groove of the sleeve 1 to prevent the shaft from being worn and extend the life of the hub.

[0034] The provision of the first iron piece 3 and the second iron piece 5 increases the rigidity of the seal, making it less likely to deform, thereby improving the stability and durability of the seal.

[0035] One side of the inner cavity of the sealing sleeve 9 is provided with a partition chamber 11 penetrating through the sealing sleeve 9, which can prevent lubricating oil or other liquids from leaking from one side to the other side, thereby maintaining the normal working state of the sealing component.

[0036] The arrangement of the side lip 4 and the plurality of auxiliary lips 2 provides a better dustproof function, protects the main lip from the intrusion of dust and other particles, and prolongs the service life of the seal.

[0037] The outer ring wall of the sealing sleeve 9 is provided with the rubber of the outer ring sleeve 6, which ensures the sealing performance of the outer ring sleeve 6 and effectively prevents the influence of the external environment on the sealing element.

[0038] One end of the sealing sleeve 9 away from the sleeve 1 is fixedly connected with a lip rubber 8, which has elastic properties and can effectively seal the shaft to ensure the dynamic sealing effect of the seal.

[0039] The overall seal is composed of multiple devices, which create multiple hollow chambers in the device. The labyrinth lip design has a larger contact area with the air, and uses multiple lips for dust prevention. While ensuring the dust prevention effect, the overall heat dissipation effect is improved. This specially designed combined oil seal has great prospects in the field of automotive wheels and can provide effective protection and performance optimization.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automobile wheel hub assembly seal, characterized in that: The invention comprises a sleeve (1), wherein the sleeve (1) is in a cylindrical structure and is sleeved on a wheel hub of an automobile. The outer surface of the sleeve (1) is sleeved with a sealing sleeve (9) for preventing water, dust and debris from entering the interior of the wheel hub to protect the wheel hub bearing. The top outer ring wall of the sealing sleeve (9) is sleeved with a spring (7) for driving itself to fit tightly with the sleeve (1), and the spring (7) surrounds the sealing sleeve (9) for a circle.

2. The automobile wheel hub assembly seal according to claim 1, characterized in that: The outer ring wall of the sleeve (1) is in the shape of an irregular groove, the sealing sleeve (9) is in close contact with the bottom of the inner cavity of the outer groove of the sleeve (1), and a receiving platform (10) is fixedly connected to both sides of one end of the sleeve (1), and the receiving platforms (10) on both sides are symmetrically distributed along the axis of the sleeve (1), and one end of the sleeve (1) is close to the receiving platform (10) and in close contact with it.

3. The automobile wheel hub assembly seal according to claim 1, characterized in that: The side of the sealing sleeve (9) close to the sleeve (1) is filled with a first iron piece (3), and the outer ring of the sealing sleeve (9) away from the sleeve (1) is filled with a second iron piece (5); the first iron piece (3) surrounds the sleeve (1) and contacts the sleeve (1) through the sealing sleeve (9); the second iron piece (5) surrounds the sealing sleeve (9) and does not contact the first iron piece (3); and both the first iron piece (3) and the second iron piece (5) are made of carbon steel.

4. The automobile wheel hub assembly seal according to claim 1, characterized in that: A partition chamber (11) penetrating the sealing sleeve (9) is provided on one side of the inner cavity of the sealing sleeve (9); the opening of the partition chamber (11) is communicated with the outside of the sealing sleeve (9); and the partition chamber (11) is provided between the first iron piece (3) and the second iron piece (5).

5. The automobile wheel hub assembly seal according to claim 1, characterized in that: A side lip (4) is fixedly connected to the sealing sleeve (9) at one side close to the partition chamber (11), and an end of the side lip (4) away from the sleeve (1) is in contact with the first iron piece (3).

6. The automobile wheel hub assembly seal according to claim 1, characterized in that: A plurality of auxiliary lips (2) for dust prevention are provided on a side of the sealing sleeve (9) close to the sleeve (1); an end of the plurality of auxiliary lips (2) away from the sealing sleeve (9) is in close contact with the first iron member (3); an oil chamber (12) is formed between the plurality of auxiliary lips (2); and an oil chamber (12) for sealing is also formed between the auxiliary lip (2) closest to the receiving platform (10) and the side lip (4).

7. The automobile wheel hub assembly seal according to claim 1, characterized in that: The outer ring wall of the sealing sleeve (9) is provided with an outer ring sleeve (6), and the outer ring sleeve (6) is made of rubber material.

8. The automobile wheel hub assembly seal according to claim 1, characterized in that: One end of the sealing sleeve (9) away from the sleeve (1) is fixedly connected to a lip rubber (8), and the lip rubber (8) is sleeved on the surface of the first iron piece (3) and tightly connected thereto.

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