A new engine sealing ring

Abstract

The utility model discloses a novel engine sealing ring, comprising an outer elastic layer, the outer part of the outer elastic layer is integrally connected with a sealing wing, the inner part of the outer elastic layer is wrapped with an inner elastic layer, the inner part of the inner elastic layer is provided with a metal wire skeleton, the inner part of the inner elastic layer is wrapped with an expansion ring located on both sides of the metal wire skeleton, a filling cavity is provided inside the expansion ring, and the filling cavity is filled with a thermal expansion medium. By providing a filling cavity and filling the filling cavity with a thermal expansion medium, the sealing ring is placed in the sealing groove of the engine cylinder block and the cylinder head. After the engine is started, the temperature rises and the internal pressure increases. The increased temperature can expand the thermal expansion medium in the filling cavity, and then the expansion ring is expanded through the expanded thermal expansion medium, and then the outer elastic layer is pressed against the sealing groove to increase the sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a novel engine sealing ring. Background Art

[0002] With the vigorous development of social economy, cars have become a means of transportation for most people. The engine is an indispensable part of the car, and the sealing of the engine has a great influence on the service life of the engine. The engine is generally assembled by a cylinder block and a cylinder head. A sealing ring is provided between the cylinder block and the cylinder head to ensure sealing, which can ensure that the engine will not leak.

[0003] In the past, the traditional practice was to use pure rubber sealing rings. However, this type of sealing ring can only be disposable. When the engine needs to be repaired and disassembled, the sealing ring needs to be removed. However, if the disassembled sealing ring is put back, it will be difficult for the engine to maintain its sealing, and leakage will often occur. The instability factor of this situation has caused a lot of trouble for manufacturers, and also brought safety hazards to consumers' subsequent driving.

[0004] Therefore, we propose a new engine sealing ring. Utility Model Content

[0005] The purpose of the utility model is to provide a new engine sealing ring to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of engine sealing ring, comprising an outer elastic layer, the outer side of the outer elastic layer is integrally connected with a sealing wing, the inner side of the outer elastic layer is wrapped with an inner elastic layer, the inner side of the inner elastic layer is provided with a metal wire skeleton, the inner side of the inner elastic layer is wrapped with an expansion ring located on both sides of the metal wire skeleton, the interior of the expansion ring is provided with a filling cavity, and the interior of the filling cavity is filled with a thermal expansion medium.

[0007] Optionally, the thermal expansion medium is one of gas, liquid or a gas-liquid mixture.

[0008] Optionally, the outer elastic layer includes a wear-resistant rubber layer and an elastic rubber layer, the wear-resistant rubber layer is wrapped around the outside of the elastic rubber layer, the wear-resistant rubber layer is made of one of nitrile rubber, butadiene rubber and styrene butadiene rubber, and the sealing wing is integrally arranged with the wear-resistant rubber layer.

[0009] Optionally, the elastic rubber layer and the inner elastic layer are made of high-elastic rubber.

[0010] Optionally, the expansion ring is made of highly elastic silicone rubber.

[0011] Optionally, the filling cavity is a single-hole cavity or a honeycomb-shaped porous cavity.

[0012] Optionally, the cross-section of the metal wire skeleton is an elongated strip, and the width of the metal wire skeleton is not greater than the diameter of the filling cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The new engine sealing ring is provided with a filling cavity and filled with a heat expansion medium inside the filling cavity, and the sealing ring is placed in the sealing groove of the engine cylinder block and the cylinder head. After the engine is started, the temperature rises and the internal pressure increases. The increased temperature can expand the heat expansion medium in the filling cavity, and then the expansion ring is expanded through the expanded heat expansion medium, thereby pressing the outer elastic layer against the sealing groove to improve the sealing performance.

[0015] 2. The new engine sealing ring is provided with sealing wings. When the engine is not working, the internal pressure of the engine is low. The multi-layer sealing wings can make the sealing ring and the sealing groove work normally, thereby ensuring the sealing of the engine cylinder block and cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a new engine sealing ring of the utility model;

[0017] Figure 2 This is a structural cross-sectional view of a sealing ring of a new engine sealing ring of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the structure of an outer elastic ring of a novel engine sealing ring.

[0019] In the figure: 1, outer elastic layer; 11, wear-resistant rubber layer; 12, elastic rubber layer; 2, sealing wing; 3, inner elastic layer; 4, metal wire skeleton; 5, expansion ring; 6, filling cavity; 7, thermal expansion medium. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figures 1 to 3The utility model provides a novel engine sealing ring, including an outer elastic layer 1, the outer part of the outer elastic layer 1 is integrally connected with a sealing wing 2, the inner part of the outer elastic layer 1 is wrapped with an inner elastic layer 3, the inner part of the inner elastic layer 3 is provided with a metal wire skeleton 4, the inner part of the inner elastic layer 3 is wrapped with an expansion ring 5 located on both sides of the metal wire skeleton 4, the expansion ring 5 is provided with a filling cavity 6, and the filling cavity 6 is filled with a thermal expansion medium 7.

[0022] The heat expansion medium 7 is one of gas, liquid or gas-liquid mixture. By setting a filling cavity 6 and filling the heat expansion medium 7 inside the filling cavity 6, the sealing ring is placed in the sealing groove of the engine cylinder block and the cylinder head. After the engine is started, the temperature increases and the internal pressure increases. The increased temperature can expand the heat expansion medium 7 in the filling cavity 6, and then the expansion ring 5 is expanded through the expanded heat expansion medium 7, thereby pressing the outer elastic layer 1 against the sealing groove to improve the sealing performance.

[0023] The outer elastic layer 1 includes a wear-resistant rubber layer 11 and an elastic rubber layer 12. The wear-resistant rubber layer 11 is wrapped around the outside of the elastic rubber layer 12. The wear-resistant rubber layer 11 is made of one of nitrile rubber, butadiene rubber and styrene-butadiene rubber. The sealing wing 2 is integrally arranged with the wear-resistant rubber layer 11. By setting the sealing wing 2, when the engine is not working, the internal pressure of the engine is low. The multi-layer sealing wing 2 can make the sealing ring and the sealing groove work normally, thereby ensuring the sealing of the engine block and the cylinder head.

[0024] The elastic rubber layer 12 and the inner elastic layer 3 are made of high elastic rubber.

[0025] The expansion ring 5 is made of highly elastic silicone rubber.

[0026] The filling cavity 6 is a single-hole cavity or a honeycomb-shaped porous cavity.

[0027] The cross section of the metal wire skeleton 4 is in the shape of an elongated strip, and the width of the metal wire skeleton 4 is not greater than the diameter of the filling cavity 6 .

[0028] Working principle:

[0029] The sealing ring is placed in the sealing groove of the engine cylinder block and the cylinder head. After the engine is started, the temperature rises and the internal pressure increases. The increased temperature can expand the heat expansion medium 7 in the filling cavity 6, and then the expansion ring 5 is expanded through the expanded heat expansion medium 7, and then the outer elastic layer 1 is pressed against the sealing groove to improve the sealing performance. When the engine is not working, the internal pressure of the engine is low. The multi-layer sealing wing 2 can make the sealing ring and the sealing groove use normally, ensuring the sealing performance of the engine cylinder block and the cylinder head.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel engine sealing ring, comprising an outer elastic layer (1), characterized in that: The outside of the outer elastic layer (1) is integrally connected with a sealing wing (2), the inside of the outer elastic layer (1) is wrapped with an inner elastic layer (3), a metal wire skeleton (4) is arranged inside the inner elastic layer (3), the inside of the inner elastic layer (3) is wrapped with an expansion ring (5) located on both sides of the metal wire skeleton (4), a filling cavity (6) is provided inside the expansion ring (5), and the inside of the filling cavity (6) is filled with a thermal expansion medium (7).

2. A novel engine sealing ring according to claim 1, characterized in that: The thermal expansion medium (7) is one of gas, liquid or a gas-liquid mixture.

3. A new engine sealing ring according to claim 1, characterized in that: The outer elastic layer (1) comprises a wear-resistant rubber layer (11) and an elastic rubber layer (12); the wear-resistant rubber layer (11) is wrapped around the outside of the elastic rubber layer (12); the wear-resistant rubber layer (11) is made of one of nitrile rubber, butadiene rubber and styrene-butadiene rubber; and the sealing wing (2) is integrally arranged with the wear-resistant rubber layer (11).

4. A new engine sealing ring according to claim 3, characterized in that: The elastic rubber layer (12) and the inner elastic layer (3) are made of high-elasticity rubber.

5. A novel engine sealing ring according to claim 1, characterized in that: The expansion ring (5) is made of highly elastic silicone rubber.

6. A novel engine sealing ring according to claim 1, characterized in that: The filling cavity (6) is a single-hole cavity or a honeycomb-shaped multi-hole cavity.

7. A novel engine sealing ring according to claim 1, characterized in that: The cross section of the metal wire skeleton (4) is in the shape of an elongated strip, and the width of the metal wire skeleton (4) is no greater than the diameter of the filling cavity (6).

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