CN219993804U

CN219993804U - Anticreep formula seal structure and engine

Info

Publication number: CN219993804U
Application number: CN202321632500.8U
Authority: CN
Inventors: 陈小勇; 邱阳
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2023-11-10
Anticipated expiration: 2033-06-26

Abstract

The utility model belongs to the technical field of sealing structures, and provides an anti-falling type sealing structure and an engine. By adopting the technical scheme of the utility model, the cross sections of the anti-falling part and the sealing assembly groove are designed into inverted trapezoid structures, and when the anti-falling part is embedded into the sealing assembly groove, the risk that the sealing gasket body falls out of the sealing assembly groove can be reduced, so that the situation that the sealing gasket body is inclined or biased and the like is reduced, and the sealing performance of the sealing structure on an engine is improved; in addition, the sealing structure is quite simple, and the assembly difficulty and the production cost are low.

Description

Anticreep formula seal structure and engine

Technical Field

The utility model belongs to the technical field of sealing structures, and particularly relates to an anti-drop sealing structure and an engine.

Background

For automotive engines, rubber gaskets play an important role in the sealing structure of the engine. For example, in the cylinder head cover assembly, a sealing gasket is required to be additionally arranged between the cylinder head and the cylinder head cover, so that blow-by gas and lubricating oil leakage are prevented. In the production process of an engine, in order to reduce the production management cost of a host factory, a rubber sealing gasket and a sealed or sealed part are usually preassembled into an assembly part and then are integrated for delivery, which leads to the possibility that the sealing gasket is separated from the part in the transportation or assembly process.

In order to solve the problems, chinese patent (application number: 201420199667.4) discloses an anti-drop type cylinder head cover sealing gasket which comprises a sealing gasket body, a lower sealing bulge and an anti-drop barb, wherein the upper part and the lower part of the sealing gasket body are an anti-drop part and a base body part, the anti-drop part is embedded in a sealing groove on the cylinder head cover, the anti-drop part is in interference fit with the sealing groove, the bottom of the base body part is provided with the lower sealing bulge and forms sealing fit with the cylinder head, the side wall on the outer side of the base body part is provided with the inverted hook-shaped anti-drop barb in a tongue-shaped outwards extending manner, and the anti-drop barb forms hooking fit with the cylinder head cover.

Above-mentioned patent prevents through setting up anticreep barb that the sealed pad breaks away from the cylinder head cover, but increases anticreep barb on sealed pad for seal structure's complexity improves, directly leads to seal structure's assembly degree of difficulty to promote, still can increase manufacturing cost.

Disclosure of Invention

The purpose of the utility model is that: aims to provide an anti-drop type sealing structure and an engine, which are used for solving the problems of high assembly difficulty and high production cost caused by the very complex anti-drop type sealing structure in the prior art pointed out in the background art.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

in a first aspect, an anti-falling type sealing structure is provided, including assembly part and sealing gasket body, the sealing gasket body includes integrated into one piece's anti-falling portion and base member portion, set up sealing assembly groove on the assembly part, anti-falling portion with sealing assembly groove's cross section all designs to fall trapezium structure, just anti-falling portion embedding sealing assembly inslot.

With reference to the first aspect, it is further defined that ear ends are disposed on two sides of the base portion, and flange faces are disposed on two sides of the opening end of the seal assembly groove on the assembly member, and the ear ends are abutted against the flange faces.

With reference to the first aspect, it is further defined that a sealing rib is disposed on a side of the ear end facing the flange surface, and the flange surface is pressed against the sealing rib.

With reference to the first aspect, it is further defined that the fitting is provided with a groove top fillet on both sides of the inner top of the seal fitting groove.

With reference to the first aspect, it is further defined that both sides of the top end of the anti-falling portion are provided with top rounded corners, and the radius of the top rounded corners is smaller than or equal to the radius of the groove top rounded corners.

With reference to the first aspect, it is further defined that the fitting is provided with groove bottom rounded corners on both sides of the seal fitting groove bottom.

With reference to the first aspect, further defined, both sides of the bottom end of the anti-falling portion are provided with bottom fillets adapted to the bottom fillets.

In a second aspect, there is provided an engine comprising an engine block and the anti-slip seal structure of any one of the first aspects, the anti-slip seal structure being provided on the engine block.

The utility model adopting the technical scheme has the following advantages:

by adopting the technical scheme of the utility model, the cross sections of the anti-falling part and the sealing assembly groove are designed into inverted trapezoid structures, and when the anti-falling part is embedded into the sealing assembly groove, the risk that the sealing gasket body falls out of the sealing assembly groove can be reduced, so that the situation that the sealing gasket body is inclined or biased and the like is reduced, and the sealing performance of the sealing structure on an engine is improved. In addition, the sealing structure is quite simple, and the assembly difficulty and the production cost are low.

Drawings

The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic diagram of an exploded structure of an anti-drop seal structure according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a drop-proof seal in an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a gasket body according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view showing a seal assembly groove in an embodiment of the present utility model;

the main reference numerals are as follows:

100. a fitting; 110. sealing the assembly groove; 111. rounded corners of the groove top; 112. rounded corners at the bottom of the tank; 120. a flange surface; 200. a gasket body; 210. an anti-falling part; 211. a top fillet; 212. bottom rounded corners; 220. a base portion; 221. ear ends; 222. sealing ribs; 300. a vertical line.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, wherein like or similar parts are designated by the same reference numerals throughout the drawings or the description, and implementations not shown or described in the drawings are in a form well known to those of ordinary skill in the art. In addition, directional terms such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. in the embodiments are merely directions with reference to the drawings, and are not intended to limit the scope of the present utility model.

As shown in fig. 1 to 4, an embodiment of the present utility model provides an anti-drop sealing structure, which can be applied to sealing of a cylinder head cover assembly in an engine.

The anti-drop type sealing structure mainly comprises a fitting 100 and a gasket body 200, and specifically, the fitting 100 may be a cylinder head cover in a cylinder head cover assembly, and mainly serves as a mounting structure of the gasket body 200.

In this embodiment, the gasket body 200 is designed to have a ring-shaped structure, and is generally made of an acrylate rubber (AEM) or an ethylene-acrylate rubber (ACM) material. The gasket body 200 includes an integrally formed release preventing portion 210 and a base portion 220, the release preventing portion 210 being located at an upper side of the base portion 220. The fitting 100 is provided with an annular seal fitting groove 110. The cross sections of the anti-drop portion 210 and the seal assembly groove 110 are designed to be inverted trapezoid structures. The narrower end of the anti-drop portion 210 is connected to the base portion 220, and the narrower end of the seal assembly groove 110 is an open end. The drop-off prevention part 210 may be inserted into the seal assembly groove 110 such that the gasket body 200 and the fitting 100 are assembled together, and an interference fit is adopted between the drop-off prevention part 210 and the seal assembly groove 110. After the gasket body 200 and the fitting 100 are assembled together, the sealing structure is assembled to the installed component. For example, when the assembly 100 is a cylinder head cover in a cylinder head cover assembly, after the gasket body 200 is assembled on the cylinder head cover, the cylinder head cover is fixed on the cylinder head by bolts, and meanwhile, the base body 220 of the gasket body 200 is pressed on the cylinder head cover, so that the sealing performance of the cylinder head cover assembly is improved.

Through adopting foretell technical scheme, all design into the cross section of anticreep portion 210 and seal assembly groove 110 and fall trapezoidal structure, after anticreep portion 210 imbeds seal assembly groove 110 in, can reduce the risk that seal pad body 200 deviate from seal assembly groove 110 to reduce the condition such as seal pad body 200 produces crooked or by the pressure to this seal structure improves the sealing performance to the engine. In addition, the sealing structure is quite simple, and the assembly difficulty and the production cost are low.

In this embodiment, the two sides of the base portion 220 are provided with ear ends 221, and the width of the ear ends 221 is not less than 2mm; the assembly 100 is provided with flange surfaces 120 on both sides of the open end of the seal assembly groove 110, and the width of the flange surfaces 120 is not less than 2mm. After the anti-falling portion 210 is embedded into the seal assembly groove 110, the ear ends 221 on two sides can respectively abut against the flange surface 120 on the same side, so as to improve the sealing performance of the seal gasket body 200 to the seal assembly groove 110.

In this embodiment, a sealing rib 222 is disposed on a side of the ear 221 facing the flange 120, the cross section of the sealing rib 222 is semicircular, and the radius of the sealing rib 222 is not less than 0.3mm. After the anti-falling portion 210 is embedded into the seal assembly groove 110, the flange surface 120 may be pressed against the seal rib 222, so that the seal rib 222 is compressed, thereby forming a seal, and further improving the sealing performance of the gasket body 200 to the seal assembly groove 110.

In this embodiment, the fitting 100 is provided with a groove top rounded corner 111 on both sides of the inner top of the seal fitting groove 110, and the radius of the groove top rounded corner 111 is designed to be not less than 0.5mm. By this arrangement, the top of the assembled anti-drop portion 210 can be prevented from being broken by the edge in the seal assembly groove 110, and stress concentration can be prevented from affecting the sealing performance.

In this embodiment, both sides of the top end of the anti-falling portion 210 are provided with the top rounded corners 211, and the radius of the top rounded corners 211 is not greater than 0.5mm, so that the radius of the top rounded corners 211 can be less than or equal to the radius of the groove top rounded corners 111. By such arrangement, after the anti-falling portion 210 is assembled to the seal assembly groove 110, the anti-falling portion can be compressed due to interference, so that the space in the seal assembly groove 110 is filled up, thereby forming a better seal, and further improving the sealing performance of the gasket body 200 to the seal assembly groove 110.

In this embodiment, the fitting 100 is provided with groove bottom fillets 112 on both sides of the bottom of the seal fitting groove 110, and the radius of the groove bottom fillets 112 is designed to be not less than 0.5mm. By this arrangement, the assembled base portion 220 can be prevented from being broken by the edge in the seal assembly groove 110, and stress concentration can be prevented from affecting sealing performance.

In this embodiment, both sides of the bottom end of the anti-falling portion 210 are provided with bottom fillets 212 adapted to the groove bottom fillets 112, and the radius of the bottom fillets 212 can be designed to be the same as the radius of the groove bottom fillets 112, so as to facilitate assembly between parts.

In the present embodiment, the angles between the oblique sides of the cross sections of the anti-drop portion 210 and the seal assembly groove 110 and the vertical line 300 are each designed to be 1-5 °, and preferably 3 °. Thereby enabling the escape prevention portion 210 to achieve an escape prevention effect after being inserted into the seal assembly groove 110. In addition, in other embodiments, other angles may be selected according to the actual application scenario.

In this embodiment, the base portion 220 of the gasket body 200 needs to be designed into an annular structure, and the anti-falling portion 210 may be designed into an annular structure, or may be arranged on the base portion 220 in a manner of arranging the intermediate ends, so as to achieve the anti-falling purpose.

The embodiment of the utility model also provides an engine, which comprises an engine body and the anti-drop sealing structure, wherein the anti-drop sealing structure is arranged on the engine body. When the anti-drop sealing structure is applied to the engine body, the assembly part 100 in the anti-drop sealing structure can be a cylinder head cover in the cylinder head cover assembly, so that the sealing performance of the engine body can be improved.

The anti-drop sealing structure and the engine provided by the utility model are described in detail. The description of the specific embodiments is only intended to aid in understanding the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides an anticreep formula seal structure, includes assembly part (100) and sealed pad body (200), its characterized in that, sealed pad body (200) are including integrated into one piece's anticreep portion (210) and base member portion (220), sealed assembly groove (110) have been seted up on assembly part (100), anticreep portion (210) with the cross section of sealed assembly groove (110) all designs to fall trapezium structure, just anticreep portion (210) embedding in sealed assembly groove (110).

2. The anti-drop seal structure according to claim 1, wherein ear ends (221) are disposed on two sides of the base portion (220), and flange faces (120) are disposed on two sides of the opening end of the seal assembly groove (110) of the assembly member (100), and the ear ends (221) are abutted against the flange faces (120).

3. The anti-drop seal arrangement according to claim 2, characterized in that the side of the ear end (221) facing the flange face (120) is provided with a sealing rib (222), the flange face (120) being pressed against the sealing rib (222).

4. The anti-drop seal arrangement of claim 1, wherein the fitting (100) is provided with groove top fillets (111) on both sides of the inner top of the seal fitting groove (110).

5. The anti-drop seal structure according to claim 4, wherein both sides of the top end of the anti-drop portion (210) are provided with top rounded corners (211), and the radius of the top rounded corners (211) is smaller than or equal to the radius of the groove top rounded corners (111).

6. The anti-drop seal arrangement of claim 4, wherein the fitting (100) is provided with groove bottom rounded corners (112) on both sides of the seal fitting groove (110) bottom.

7. The anti-drop seal arrangement according to claim 6, characterized in that both sides of the bottom end of the anti-drop portion (210) are provided with bottom rounded corners (212) adapted to the groove bottom rounded corners (112).

8. The drop-proof sealing arrangement according to any of claims 1-7, characterized in that the oblique sides of the cross-sections of the drop-proof portion (210) and the seal assembly groove (110) are each designed with an angle of 1-5 ° to the vertical (300).

9. An engine comprising an engine block and the anti-slip seal according to any one of claims 1 to 8, the anti-slip seal being provided on the engine block.