A hub oil plug

Abstract

The utility model belongs to the technical field of wheel hub sealing, especially relates to a wheel hub oil plug, it includes: the outer support ring, the frame structure of the opening of the oblique upper side of inside cross section shows, the inner sealing ring is set up in the inside of outer support ring, and extends to the opening of outer support ring outward, and with the inside sealing contact of outer support ring, the inner support ring is set up in the inner sealing ring, supports the inner sealing ring, and is buckled on the opening of outer support ring, the sealing reinforcing ring is set up in the inner support ring, and with the inner support ring and outer support ring sealing contact, realize multi -section sealing through the cooperation of outer support ring, inner sealing ring, inner support ring and sealing reinforcing ring, to guarantee the sealing effect of oil plug whole.

Description

Technical Field

[0001] This utility model belongs to the field of wheel hub sealing technology, and in particular relates to a wheel hub oil plug. Background Technology

[0002] Oil plugs are among the most frequently used parts in automotive repair. Also known as oil retainers, oil plugs are installed in all automotive mechanisms that have rolling or sliding bearings to prevent the leakage or seepage of lubricating oil or grease, while also preventing the ingress of dust or sludge. This maintains good lubrication conditions for rolling or sliding friction parts, extending their service life. Automotive drive axle oil plugs are mainly divided into drive gear oil plugs, wheel hub inner and outer oil plugs, bearing housing oil plugs, and half-shaft oil plugs.

[0003] Existing wheel hub oil plugs have a simple structure, typically employing only one or two seals, resulting in mediocre sealing performance. Furthermore, the oil seals are prone to significant movement during use, severely impacting their lifespan. Currently, no effective solution has been proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a wheel hub oil plug with a simple structure and ideal and reliable sealing effect.

[0005] In view of this, the present invention provides a wheel hub oil plug, comprising:

[0006] The outer support ring has a frame-like structure with an opening on the inner side at an angle upwards.

[0007] The inner sealing ring is located inside the outer support ring and extends into the opening of the outer support ring, and makes sealing contact with the inner side of the outer support ring.

[0008] The inner support ring is set inside the inner sealing ring to support the inner sealing ring and is fastened to the opening of the outer support ring;

[0009] The sealing reinforcement ring is placed inside the inner support ring and makes sealing contact with both the inner and outer support rings.

[0010] In the above technical solution, the outer support ring further comprises the following components connected in sequence:

[0011] Short end;

[0012] The outer support section is set perpendicular to the short end;

[0013] The long end is perpendicular to the outer support and parallel to the short end;

[0014] The inner support portion is perpendicular to the long end portion and is located inside the outer support portion and coaxially arranged with the outer support portion;

[0015] The inner sealing ring extends into the outer support ring and makes sealing contact with the inner wall of the short end, the inner ring surface of the outer support part, and the inner wall of the long end, respectively.

[0016] In the above technical solution, the inner sealing ring further includes:

[0017] The outer sealing part is located inside the outer support ring;

[0018] The connecting part connects to the outer sealing part and extends out from the opening of the outer support ring;

[0019] The inner sealing part is connected to the connecting part and is located inside the outer sealing part and coaxially disposed with the outer sealing part;

[0020] The outer sealing part, connecting part and inner sealing part are connected to form an n-shaped sealing structure with a groove at one end, and the inner support ring is set in the groove.

[0021] In the above technical solution, the inner sealing ring further includes:

[0022] The labyrinth sealing wing is located on the outside of the outer sealing part and makes sealing contact with the inner wall of the short end and the inner annular surface of the outer support part. It is composed of several sealing ribs distributed on the outside of the outer sealing part.

[0023] The end sealing rib is set on the end face of the outer sealing part and makes sealing contact with the inner wall of the long end.

[0024] Several inner sealing ribs are equidistantly arranged on the inner ring wall of the inner sealing part.

[0025] In the above technical solution, the inner support ring further includes:

[0026] The outer support rib fits against the inner ring surface of the outer sealing part, is located outside the inner support part and is coaxially arranged with the inner support part, and a limiting edge with a limit is formed on the inner ring surface of the outer sealing part;

[0027] The inner connecting rib is fitted to the connecting part;

[0028] The inner support rib fits against the outer ring surface of the inner sealing part;

[0029] The inner ring surface of the inner sealing part is conical, the inner support rib is conical and fits with the conical surface for positioning, and the inner support rib, the inner connecting rib and the inner support rib are connected to form an n-shaped structure.

[0030] In the above technical solution, the sealing reinforcement ring further includes:

[0031] The inner reinforcing ring is positioned on the outer ring surface of the inner supporting rib.

[0032] The inner sealing ring, supported by the inner reinforcing ring, makes sealing contact with the inner ring surface of the inner support part and the inner wall of the inner connecting rib.

[0033] In the above technical solution, the inner reinforcing ring further includes:

[0034] The support plate abuts against the inner support rib;

[0035] The elastic abutment piece has multiple arcs that extend diagonally downwards and outwards from the side of the inner connecting rib of the support piece;

[0036] The elastic abutment piece presses the inner sealing ring against the inner ring surface of the inner support.

[0037] In the above technical solution, the inner sealing ring further includes:

[0038] The support body is located on the side of the elastic abutment piece near the inner connecting rib and has a groove that engages with the end of the elastic abutment piece.

[0039] The upper sealing wing extends upward from the side of the support body near the inner connecting rib and abuts against the inner connecting rib;

[0040] Several reinforcing ribs are evenly distributed circumferentially on the side wall of the upper sealing wing;

[0041] The side sealing wing is formed on one side of the support body near the inner support part, and extends inward in the direction of the connecting rib, and fits against the inner annular surface of the inner support part;

[0042] The lower sealing wing is formed on the lower side of the side sealing wing and fits against the inner annular surface of the inner support.

[0043] The beneficial effects of this utility model are as follows:

[0044] 1. Multi-stage sealing is achieved through the cooperation of an outer support ring, an inner sealing ring, an inner support ring, and a sealing reinforcement ring, thereby ensuring the overall sealing effect of the oil plug;

[0045] 2. The inner support ring and inner reinforcing ring ensure the overall strength and sealing life of the oil plug structure. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of this utility model;

[0047] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0048] Figure 3 yes Figure 2 A magnified view of a section at point I;

[0049] Figure 4 This is a schematic diagram of the structure of the inner sealing ring in this utility model;

[0050] The markings in the diagram are as follows: 1-Outer support ring, 1a-Short end, 1b-Outer support part, 1c-Long end, 1d-Inner support part, 2-Inner sealing ring, 2a-Outer sealing part, 2b-Connecting part, 2c-Inner sealing part, 2d-Labyrinth sealing wing, 2e-End sealing rib, 2f-Inner sealing rib, 3-Inner support ring, 3a-Outer support rib, 3b-Inner connecting rib, 3c-Inner support rib, 4-Inner reinforcing ring, 4a-Support piece, 4b-Elastic abutment piece, 5-Inner sealing ring, 5a-Support body, 5b-Upper sealing wing, 5c-Reinforcing rib, 5d-Side sealing wing, 5e-Lower sealing wing. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0052] Example 1:

[0053] This embodiment provides a wheel hub oil plug, including:

[0054] The outer support ring 1 has a frame-like structure with an opening on the upper side of the inner side;

[0055] The inner sealing ring 2 is disposed inside the outer support ring 1 and extends into the opening of the outer support ring 1, and makes sealing contact with the inner side of the outer support ring 1.

[0056] The inner support ring 3 is set inside the inner sealing ring 2 to support the inner sealing ring 2 and is fastened to the opening of the outer support ring 1;

[0057] A sealing reinforcement ring is set inside the inner support ring 3 and makes sealing contact with the inner support ring 3 and the outer support ring 1.

[0058] In this embodiment, the outer support ring 1 is used to make sealing contact with the outer sealing surface of the part to be sealed, such as the inner wall of the shell; the inner sealing element is used to make sealing contact with the inner sealing surface of the part to be sealed, such as the axial surface of the shaft; at the same time, the inner sealing ring 2 extends into the outer support ring 1, thereby ensuring the sealing effect of the connection between the inner sealing ring 2 and the outer sealing ring; the inner support ring 3 is set inside the inner sealing ring 2 to provide good support for the inner sealing ring 2 and prevent the inner sealing ring 2 from deforming; and the sealing reinforcement ring is set between the inner support ring 3 and the outer support ring 1 to provide good sealing effect; thus, the overall sealing effect of the oil plug is improved through multi-segment staggered sealing.

[0059] Example 2:

[0060] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] The outer support ring 1 includes the following components connected in sequence:

[0062] Short end 1a;

[0063] The outer support portion 1b is arranged perpendicularly to the short end portion 1a;

[0064] The long end 1c is perpendicular to the outer support part 1b and parallel to the short end 1a;

[0065] The inner support portion 1d is perpendicular to the long end portion 1c and is located inside the outer support portion 1b and coaxially arranged with the outer support portion 1b.

[0066] The inner sealing ring 2 extends into the outer support ring 1 and makes sealing contact with the inner wall of the short end 1a, the inner ring surface of the outer support part 1b, and the inner wall of the long end 1c, respectively.

[0067] In this embodiment, the outer support ring 1 is made of metal; the short end 1a and the long end 1c form a structure that limits the inner sealing ring 2 and makes a sealing contact with the inner sealing ring 2; the outer ring surface of the outer support part 1b is in sealing contact with the outer sealing surface, and the inner ring surface is in sealing contact with the inner sealing ring 2, thereby further ensuring the sealing effect between the outer support part 1b and the inner sealing ring 2; and the inner support part 1d can prevent the inner sealing ring 2 from detaching or shifting, ensuring the stability of the oil plug structure.

[0068] Example 3:

[0069] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] The inner sealing ring 2 includes:

[0071] The outer sealing part 2a is located inside the outer support ring 1;

[0072] The connecting part 2b is connected to the outer sealing part 2a and extends out from the opening of the outer support ring 1;

[0073] The inner sealing part is connected to the connecting part 2b and is located inside the outer sealing part 2a and coaxially disposed with the outer sealing part 2a.

[0074] The outer sealing part 2a, the connecting part 2b and the inner sealing part are connected to form an n-shaped sealing structure with a groove at one end, and the inner support ring 3 is set in the groove.

[0075] In this embodiment, the inner sealing ring 2 is made of a sealing material, such as wear-resistant rubber; the outer sealing part 2a is located inside the outer support ring 1, thereby ensuring the sealing effect of contact with the inside of the outer support ring 1; the connecting part 2b extends out of the outer support ring 1, while the inner sealing part is sleeved on the shaft, thereby ensuring the sealing effect of contact with shaft-like parts; the connecting part 2b and the inner sealing part are connected to form an n-shaped sealing structure with a groove at one end; the inner support ring 3 is set in the groove, thereby enabling the inner support ring 3 to better support the inner sealing ring 2.

[0076] Example 4:

[0077] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0078] The inner sealing ring 2 also includes:

[0079] The labyrinth sealing wing 2d is located on the outside of the outer sealing part 2a and makes sealing contact with the inner wall of the short end 1a and the inner annular surface of the outer support part 1b. It is composed of several sealing ribs distributed on the outside of the outer sealing part 2a.

[0080] The end sealing rib 2e is provided on the end face of the outer sealing part 2a and makes sealing contact with the inner wall of the long end 1c.

[0081] Several inner sealing ribs 2f are equidistantly arranged on the inner ring wall of the inner sealing part.

[0082] In this embodiment, the labyrinth sealing wing 2d improves the sealing effect of the inner sealing ring 2 in contact with the short end wall and the outer support part 1b of the outer support ring 1; the end sealing rib 2e improves the sealing effect of the inner sealing ring 2 in contact with the long end 1c of the outer support ring 1; and the inner sealing rib 2f improves the sealing performance of the inner sealing part in contact with shaft parts.

[0083] Example 5:

[0084] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0085] The inner support ring 3 includes:

[0086] The outer support rib 3a is in contact with the inner ring surface of the outer sealing part 2a, located outside the inner support part 1d and coaxially arranged with the inner support part 1d, and a limiting edge with a limit is formed on the inner ring surface of the outer sealing part 2a.

[0087] The inner connecting rib 3b is fitted to the connecting part 2b.

[0088] The inner support rib 3c fits against the outer ring surface of the inner sealing part;

[0089] The inner ring surface of the inner sealing part is conical, the inner support rib 3c is conical and fits with the conical surface for positioning, and the inner support rib 3c, the inner connecting rib 3b and the inner support rib 3c are connected to form an n-shaped structure.

[0090] In this embodiment, the inner support ring 3 is made of metal material, the outer support rib 3a in the inner support ring 3 is used to limit the inner sealing ring 2, and the inner support rib 3c is tapered, thereby preventing the inner support ring 3 from detaching from the inner sealing ring 2.

[0091] Example 6:

[0092] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0093] The sealing reinforcement ring includes:

[0094] The inner reinforcing ring 4 is limited on the outer ring surface of the inner supporting rib 3c;

[0095] The inner sealing ring 5, supported by the inner reinforcing ring 4, makes sealing contact with the inner annular surface of the inner support part 1d and the inner wall of the inner connecting rib 3b.

[0096] In this embodiment, the inner reinforcing ring 4 is used to support the inner sealing ring 5. The inner sealing ring 5 can improve the sealing effect between the inner support part 1d and the inner connecting rib 3b, thereby ensuring the sealing effect of the oil plug.

[0097] Example 7:

[0098] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0099] Inner reinforcing ring 4 includes:

[0100] Support plate 4a abuts against inner support rib 3c;

[0101] The elastic abutment piece 4b extends in a multi-segment arc shape from the side of the support piece 4a near the inner connecting rib 3b, diagonally downward and outward towards the support rib 3a;

[0102] The elastic abutment piece 4b abuts the inner sealing ring 5 against the inner ring surface of the inner support part 1d.

[0103] In this embodiment, the inner sealing ring 5 is supported by spring steel. The elastic abutment piece 4b can better abut the inner sealing ring 5 against the inner support part 1d and the inner connecting rib 3b. At the same time, since the inner support rib 3c is tapered, the support piece 4a is not easy to slip out after being inserted into the inner support ring 3, thereby improving the structural stability of the sealing reinforcement ring installation.

[0104] Example 8:

[0105] This embodiment provides a wheel hub oil plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0106] The inner sealing ring 5 includes:

[0107] The support body 5a is disposed on one side of the elastic abutment piece 4b near the inner connecting rib 3b, and has a groove for engaging with the end of the elastic abutment piece 4b.

[0108] The upper sealing wing 5b extends upward from the side of the support body 5a near the inner connecting rib 3b and abuts against the inner connecting rib 3b;

[0109] Several reinforcing ribs 5c are evenly distributed circumferentially on the side wall of the upper sealing wing 5b;

[0110] The side sealing wing 5d is formed on the side of the support body 5a near the inner support part 1d, and extends in the direction of the inward connecting rib 3b, and fits against the inner annular surface of the inner support part 1d.

[0111] The lower sealing wing 5e is formed on the lower side of the side sealing wing 5d and fits against the inner annular surface of the inner support part 1d.

[0112] In this embodiment, the support body 5a serves to support the inner sealing ring 5 and facilitates the connection and fixation of the inner sealing ring 5 and the inner reinforcing ring 4; the upper sealing wing 5b ensures the sealing performance of the contact between the inner sealing ring 5 and the inner connecting rib 3b, and the reinforcing rib 5c improves the structural strength of the upper sealing wing 5b; the cooperation of the side sealing wing 5d and the lower sealing wing 5e achieves a double sealing effect with the inner support part 1d.

[0113] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A hub oil seal characterized by, include: The outer support ring (1) has a frame-like structure with an opening on the upper side of the inner side; The inner sealing ring (2) is located inside the outer support ring (1) and extends into the opening of the outer support ring (1), and makes sealing contact with the inner side of the outer support ring (1); The inner support ring (3) is set inside the inner sealing ring (2) to support the inner sealing ring (2) and is fastened to the opening of the outer support ring (1); The sealing reinforcement ring is set inside the inner support ring (3) and makes sealing contact with the inner support ring (3) and the outer support ring (1).

2. The wheel hub oil plug according to claim 1, characterized in that, The outer support ring (1) comprises the following components connected in sequence: Short end (1a); The outer support portion (1b) is arranged perpendicularly to the short end portion (1a); The long end (1c) is perpendicular to the outer support part (1b) and parallel to the short end (1a); The inner support portion (1d) is perpendicular to the long end portion (1c) and is located inside the outer support portion (1b) and coaxially arranged with the outer support portion (1b); The inner sealing ring (2) extends into the outer support ring (1) and makes sealing contact with the inner wall of the short end (1a), the inner ring surface of the outer support part (1b) and the inner wall of the long end (1c).

3. A wheel hub oil plug according to claim 2, characterized in that, The inner sealing ring (2) includes: The outer sealing part (2a) is located inside the outer support ring (1); The connecting part (2b) is connected to the outer sealing part (2a) and extends out from the opening of the outer support ring (1); The inner sealing part (2c) is connected to the connecting part (2b) and is coaxially disposed with the outer sealing part (2a) located inside the outer sealing part (2a); The outer sealing part (2a), the connecting part (2b) and the inner sealing part (2c) are connected to form an n-shaped sealing structure with a groove at one end, and the inner support ring (3) is set in the groove.

4. A wheel hub oil plug according to claim 3, characterized in that, The inner sealing ring (2) further includes: The labyrinth sealing wing (2d) is located on the outside of the outer sealing part (2a) and is in sealing contact with the short end (1a) and the outer support part (1b). It is composed of several sealing ribs distributed on the outside of the outer sealing part (2a). An end sealing rib (2e) is provided on the end face of the outer sealing part (2a) and makes sealing contact with the inner wall of the long end (1c); Several inner sealing ribs (2f) are equidistantly arranged on the inner ring wall of the inner sealing part (2c).

5. A wheel hub oil plug according to claim 4, characterized in that, The inner support ring (3) includes: The outer support rib (3a) is in contact with the inner ring surface of the outer sealing part (2a), located outside the inner support part (1d) and coaxially arranged with the inner support part (1d), and a limiting edge with a limit is formed on the inner ring surface of the outer sealing part (2a); The inner connecting rib (3b) is fitted to the connecting part (2b); The inner support rib (3c) fits against the outer ring surface of the inner sealing part (2c); The inner ring surface of the inner sealing part (2c) is conical, and the inner support rib (3c) is conical and fits into the conical surface.

6. A wheel hub oil plug according to claim 5, characterized in that, The sealing reinforcement ring includes: The inner reinforcing ring (4) is positioned on the outer ring surface of the inner supporting rib (3c); The inner sealing ring (5) is in sealing contact with the inner ring surface of the inner support part (1d) and the inner wall of the inner connecting rib (3b) under the support of the inner reinforcing ring (4).

7. A wheel hub oil plug according to claim 6, characterized in that, The inner reinforcing ring (4) includes: The support plate (4a) abuts against the inner support rib (3c); The elastic abutment piece (4b) has a multi-segment arc shape that extends obliquely downward and outward towards the support rib (3a) from the side of the support piece (4a) near the inner connecting rib (3b); The elastic abutment piece (4b) abuts the inner sealing ring (5) against the inner ring surface of the inner support part (1d).

8. A wheel hub oil plug according to claim 7, characterized in that, The inner sealing ring (5) includes: The support (5a) is disposed on the side of the elastic abutment piece (4b) near the inner connecting rib (3b) and has a groove for engaging with the end of the elastic abutment piece (4b). The upper sealing wing (5b) extends upward from the side of the support (5a) near the inner connecting rib (3b) and abuts against the inner connecting rib (3b); Several reinforcing ribs (5c) are evenly distributed circumferentially on the sidewall of the upper sealing wing (5b); The side sealing wing (5d) is formed on the side of the support (5a) near the inner support part (1d) and extends in the direction of the inward connecting rib (3b), and fits against the inner annular surface of the inner support part (1d); The lower sealing wing (5e) is formed on the lower side of the side sealing wing (5d) and fits against the inner annular surface of the inner support (1d).

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