CN219774233U

CN219774233U - Cylinder head cover sealing device and vehicle

Info

Publication number: CN219774233U
Application number: CN202321298314.5U
Authority: CN
Inventors: 程涛
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-09-29
Anticipated expiration: 2033-05-25

Abstract

The utility model relates to a cylinder head cover sealing device and a vehicle, which are used for solving the problem that the traditional sealing mode causes high sealing cost of a spark plug hole of the cylinder head cover. The cylinder head cover sealing device includes: a cylinder head cover and a camshaft cover body; the cylinder head cover is provided with a spark plug hole; the camshaft cover main body is provided with a camshaft cover cylinder in a protruding mode; a sealing groove is concavely formed on the hole wall of the spark plug hole or the outer wall of the camshaft cover cylinder; the camshaft cover cylinder extends into the spark plug hole, and the camshaft cover cylinder and the spark plug hole form a seal in the radial direction of the spark plug hole through a sealing ring assembled in the sealing groove.

Description

Cylinder head cover sealing device and vehicle

Technical Field

The scheme relates to the field of automobile engine sealing, in particular to a cylinder head cover sealing device and a vehicle.

Background

Because of the complex lubrication oil path system designed in the automobile engine, during the operation of the engine, lubricating oil can splash to all corners of the engine interior which can be communicated with each other, if the lubricating oil is leaked outside the engine because of not being well sealed, complaints of users are affected if the lubricating oil is light, and the damage to the engine and the use safety risk are caused if the lubricating oil is heavy. While cylinder head cover sealing at the top of the engine is important in the overall sealing system of the engine.

In the running process of the engine, lubricating oil splashes to the position of the cylinder head cover at the top of the engine, and the position of the spark plug hole needs to be exposed to a design party to ensure assembly due to the requirement of an assembly process, so that the position of the spark plug hole needs to be sealed and isolated by using the cylinder head cover, inorganic oil leakage at the position of the spark plug hole is ensured, and the traditional sealing mode is a vertical pressure sealing mode, namely: the two structures to be sealed are arranged up and down, the sealing gasket is arranged in the middle, and the sealing is ensured by adopting a pressure mode. The sealing mode has the defects that a certain vibration force is brought after the engine operates, oil seepage is easy to occur at the sealing joint position due to the vibration force, otherwise, a bolt level with larger force is required to be added to ensure sealing, and the cost is high.

Disclosure of Invention

The utility model relates to a cylinder head cover sealing device and a vehicle, which are used for solving the problem that the traditional sealing mode causes high sealing cost of a spark plug hole of the cylinder head cover.

The technical scheme of the utility model is as follows:

the utility model provides a cylinder head cover sealing device, comprising: a cylinder head cover and a camshaft cover body;

the cylinder head cover is provided with a spark plug hole;

the camshaft cover main body is provided with a camshaft cover cylinder in a protruding mode;

a sealing groove is concavely formed on the hole wall of the spark plug hole or the outer wall of the camshaft cover cylinder;

the camshaft cover cylinder extends into the spark plug hole, and the camshaft cover cylinder and the spark plug hole form a seal in the radial direction of the spark plug hole through a sealing ring assembled in the sealing groove.

Preferably, the groove bottom of the sealing groove is formed into a circular arc shape which is attached to part of the outer wall of the sealing ring.

Preferably, the seal groove has a C-shaped cross-section along the axial line direction of the spark plug hole.

Preferably, the sealing groove is an annular sealing groove.

The utility model also provides a vehicle comprising the cylinder head cover sealing device.

The beneficial effects of the utility model are as follows:

in the running process of the engine, a radial sealing mode is used for ensuring the sealing between the spark plug hole on the cylinder head cover and the main body of the camshaft cover, so that the problem that engine oil or oil vapor leaks is avoided by adopting a higher-grade bolt for engine vibration is avoided. The original vertical sealing gasket is canceled, and the cost of the engine can be reduced by adopting a sealing ring instead; in addition, the development cost can be reduced without adding high-grade bolts.

Drawings

FIG. 1 is a schematic view of a cylinder head cover sealing device in an embodiment of the utility model;

FIG. 2 is a schematic view in section A-A of FIG. 1;

FIG. 3 is an enlarged schematic view of FIG. 2 at B;

FIG. 4 is a schematic view of a cylinder head cover in an embodiment of the utility model;

FIG. 5 is a cross-sectional view of C-C of FIG. 4;

FIG. 6 is an enlarged schematic view of FIG. 5 at D;

FIG. 7 is a schematic view of a seal ring in an embodiment of the utility model;

fig. 8 is a sectional view of E-E of fig. 7.

Detailed Description

With reference to fig. 1 to 8, the present embodiment provides a cylinder head cover sealing device including: a cylinder head cover 1 and a camshaft cover main body 2; the cylinder head cover 1 is provided with a spark plug hole 11; a first seal groove 111 is formed on the hole wall of the spark plug hole 11 in an inward concave manner; the camshaft cover main body 2 is provided with a camshaft cover cylinder 21 in a protruding mode; the camshaft cover cylinder 21 protrudes into the spark plug hole 11, and the camshaft cover cylinder 21 and the spark plug hole 11 form a seal in the radial direction of the spark plug hole 11 by the seal ring 3 fitted in the first seal groove 111.

The radial sealing mode is used for ensuring the sealing between the cylinder head cover 1 and the camshaft cover main body 2, so that the problem that engine oil or oil steam leaks is avoided by adopting a higher-grade bolt to avoid engine vibration. The specific principle is as follows: the compression elasticity of the sealing ring 3 is utilized to be naturally matched with the cylindrical surface of the camshaft cover for sealing, the natural compensation amount of the elastic sealing ring is used to form sealing with the cylindrical surface of the camshaft cover, the original traditional vertical pressure sealing gasket structure is canceled, after the vibration acting force of the engine is transferred to a sealing position, the sealing position is compensated through the circumferential design compensation of the sealing ring 3, and the sealing reliability of the spark plug hole position can be ensured without particularly increasing the lifting pressure of a large bolt grade. Simple process and low cost.

Referring to fig. 5 to 6, in the present embodiment, the groove bottom of the first seal groove 111 is formed in a circular arc shape that is attached to a part of the outer wall of the seal ring 3.

As shown in fig. 6, the first seal groove 111 has a C-shaped cross-section along the axial line direction of the spark plug hole 11. In this embodiment, the first seal groove 111 is an annular seal groove, specifically an O-type seal groove. Specifically, the O-ring seal groove is mainly composed of three critical dimensions D1, X, H, wherein: d1 (radius of circular arc) is not less than 3 and not more than 10, X (depth of plane connected with circular arc in O-shaped seal groove) is not less than 1 and not more than 5, H (opening size of O-shaped seal groove along axis direction of spark plug hole 11) is not less than 3 and not more than 10 (unit: mm).

As shown in fig. 7 and 8, the sealing ring 3 is an O-ring, and the O-ring can be formed by injection molding and machining. The O-shaped sealing ring is integrally formed by rubber materials. The size of the O-shaped sealing ring mainly comprises D2 and D3, wherein: d2 (inner diameter of O-shaped sealing ring) is less than or equal to 40 and less than or equal to 60, and D3 (thickness of O-shaped sealing ring) is less than or equal to 3 and less than or equal to 10 (unit: mm).

In this embodiment, the sealing at the position of the spark plug hole 11 is performed by matching the O-ring sealing ring on the cylinder head cover 1 with the surface of the camshaft cover cylinder 21 on the camshaft cover main body 2, and the sealing mode adopts radial matching sealing, specifically, the sealing is performed by matching compression between the elastic compensation of the O-ring sealing ring and the surface of the camshaft cover cylinder 21, so that the structure can well avoid possible leakage risk of the traditional sealing gasket caused by vibration.

In this embodiment, in order to realize radial fit sealing between the cylinder head cover 1 and the camshaft cover main body 2, the first seal groove 111 formed by recessing on the hole wall of the camshaft cover cylinder 21 may be replaced by a second seal groove formed by recessing on the outer wall of the camshaft cover cylinder 21, at this time, the inner ring portion of the seal ring 3 is tightly attached to the groove wall of the second seal groove, and the outer ring portion of the seal ring 3 is attached to the hole wall of the camshaft cover cylinder 11, so that the same technical effect can be achieved by recessing on the outer wall of the camshaft cover cylinder 21 to form the second seal groove and the design mode of the first seal groove. The second seal groove is an annular seal groove, the groove bottom of the second seal groove is formed into an arc shape attached to a part of the outer wall of the seal ring 3, and the second seal groove has a C-shaped cross section along the axial line direction of the camshaft cylinder 21.

The embodiment of the utility model also provides a vehicle comprising the cylinder head cover sealing device.

The foregoing is a basic principle and main features of the present utility model, and the protective scope thereof is not limited to the above-described embodiments. It will be apparent to those skilled in the art that various modifications can be made to the present utility model without departing from the scope or spirit of the utility model. It is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A cylinder head cover sealing device, characterized by comprising: a cylinder head cover (1) and a camshaft cover main body (2); the cylinder head cover (1) is provided with a spark plug hole (11);

a camshaft cover cylinder (21) is arranged on the camshaft cover main body (2) in a protruding mode;

a sealing groove is concavely formed on the hole wall of the spark plug hole (11) or on the outer wall of the camshaft cover cylinder (21);

the camshaft cover cylinder (21) extends into the spark plug hole (11), and the camshaft cover cylinder (21) and the spark plug hole (11) form a seal in the radial direction of the spark plug hole (11) through a sealing ring (3) assembled in the sealing groove.

2. The cylinder head cover sealing device according to claim 1, wherein the groove bottom of the seal groove is formed in a circular arc shape that is fitted to a part of the outer wall of the seal ring (3).

3. The cylinder head cover sealing device according to claim 2, wherein the seal groove has a C-shaped cross-sectional shape along the axial line direction of the spark plug hole (11).

4. The cylinder head cover sealing arrangement as set forth in claim 3, wherein said seal groove is an annular seal groove.

5. A vehicle characterized by comprising the cylinder head cover sealing device according to any one of claims 1 to 4.