CN204783316U - Intake pipe seal gasket - Google Patents

Abstract

The utility model discloses an intake pipe sealing gasket, which comprises a metal base plate, an air hole is opened in the middle part of the metal base plate, an upper rubber layer is bonded to the upper surface of the metal base plate, and a lower rubber layer is bonded to the lower surface of the metal base plate , the outer edge of the metal substrate is bonded with an edge rubber layer, the upper rubber layer, the lower rubber layer, and the edge rubber layer are integrated, and a ring of sealing ribs is respectively arranged on the upper rubber layer and the lower rubber layer. The utility model can be used for the sealing between the intake pipe and the cylinder head of the engine, and has the beneficial effects of good sealing performance and strong adaptability to the working environment.

Description

Air intake pipe sealing gasket

technical field

The utility model relates to the technical field of engine accessories, in particular to an intake pipe sealing gasket.

Background technique

The intake pipe sealing gasket is a sealing fitting set between the intake pipe and the engine cylinder head to prevent air leakage. Existing air intake pipe sealing gaskets generally adopt a circle of pressure waves on the thin steel plate coated with rubber layer to seal. The pressure wave referred to here refers to a ring of wrinkled protrusions on the gasket of the intake pipe that acts as a seal. The wrinkled protrusions can rebound after being squeezed to play a sealing role. The disadvantage of this intake pipe sealing gasket is that the pressure wave rebound rate is low, and the sealing effect becomes poor after long-term use, and air leakage is prone to occur. With the increasing requirements of the market for triple leaks, there is an urgent need for an air intake pipe sealing gasket with better sealing performance.

Contents of the invention

The purpose of the utility model is to provide an air intake pipe sealing gasket with good sealing performance.

To achieve the above object, the utility model includes a metal base plate, the middle part of the metal base plate is provided with a vent hole, the upper surface of the metal base plate is bonded with an upper rubber layer, the lower surface of the metal base plate is bonded with a lower rubber layer, and the outer side of the metal base plate The edge is bonded with an edge rubber layer, and the upper rubber layer, the lower rubber layer, and the edge rubber layer are integrated, and a ring of sealing ribs is respectively arranged on the upper rubber layer and the lower rubber layer.

The sealing ribs on the upper rubber layer and the lower rubber layer are arranged symmetrically up and down, and the section of the sealing ribs is a trapezoidal structure gradually narrowing from the base to the top.

There are two lugs on the metal base plate, and the upper rubber layer, the lower rubber layer, and the edge rubber layer are all provided with extended parts corresponding to the lugs, and the extended parts completely cover the lugs, and the upper rubber layer is connected with the A positioning boss is respectively arranged at the corresponding parts of the two lugs.

The two lugs on the metal base are located on opposite sides of the metal base.

The positioning boss is a cone structure.

The upper rubber layer, the lower rubber layer and the edge rubber layer are all fluorine rubber layers.

The utility model takes the metal substrate as the skeleton, and the upper and lower surfaces of the metal substrate and the outer edge are covered with a rubber layer. This structure can take into account both hardness and elasticity characteristics, and can make the intake pipe and the cylinder head closely fit and play a good role. The sealing function of the upper rubber layer, the lower rubber layer and the edge rubber layer are integrated, which can make the rubber layer and the metal substrate bond more firmly and make the rubber layer easier to manufacture and shape; the upper rubber layer and the lower rubber layer There is a ring of sealing ribs on each layer. This structure can further improve the gap compensation ability and rebound rate of the gasket, so that the utility model can still maintain a close fit with the intake pipe and the cylinder head in a vibrating environment. The sealing ribs on the upper rubber layer and the lower rubber layer are symmetrically arranged up and down. The cross section of the sealing ribs is a trapezoidal structure that gradually narrows from the base to the top. This structure can ensure that the sealing ribs will not be dislocated or wrinkled during compression deformation and other problems to ensure good sealing performance; there are two lugs on the metal base plate, and a positioning boss is provided on the upper rubber layer corresponding to the two lugs, and the positioning boss can be embedded in the positioning on the cylinder head. In the hole, it plays the role of positioning and preventing misalignment; the two lugs on the metal substrate are located on the opposite sides of the metal substrate, and the two positioning bosses are scattered. This structure can ensure accurate positioning; the positioning boss is Cone structure, it is easier to combine and separate from the positioning hole, which is beneficial to the installation and disassembly of the utility model; the upper rubber layer, the lower rubber layer, and the edge rubber layer are all fluororubber layers, which have good high temperature resistance and oil resistance , chemical resistance, flame resistance and other characteristics, the use effect is good, and the service life is long.

In summary, the utility model can be used for sealing between the intake pipe and the engine cylinder head, and has the beneficial effects of good sealing performance and strong adaptability to the working environment.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the structure cut along the A-A direction in Fig. 1 .

Detailed ways

Referring to the accompanying drawings, the air intake pipe sealing gasket includes a metal substrate 1, the middle part of the metal substrate 1 is provided with a vent hole 2, the metal substrate 1 forms the skeleton of the air intake pipe sealing gasket, and the upper surface of the metal substrate 1 is bonded with an upper The rubber layer 3, the lower rubber layer 4 is bonded to the lower surface of the metal substrate 1, the edge rubber layer 5 is bonded to the outer edge of the metal substrate 1, and the upper rubber layer 3, the lower rubber layer 4, and the edge rubber layer 5 are integrated. , this structure can make the bond between the rubber layer and the metal substrate 1 stronger, and make the rubber layer easier to manufacture and shape. Preferably, the upper rubber layer 3, the lower rubber layer 4, and the edge rubber layer 5 are all fluororubber layers, which have good properties such as high temperature resistance, oil resistance, chemical resistance, and flame resistance, and can achieve better use effects and longer life. service life. The upper rubber layer 3 and the lower rubber layer 4 are respectively provided with a ring of sealing ribs 6. After adding the sealing ribs 6, the gap compensation ability and rebound rate of the air intake pipe sealing gasket can be further improved, so that it can still be used in a vibrating environment. Maintain a tight fit with the intake pipe and cylinder head. As a further improvement, the sealing ribs 6 on the upper rubber layer 3 and the lower rubber layer 4 are arranged symmetrically up and down, and the section of the sealing ribs 6 is a trapezoidal structure that gradually narrows from the base to its top. This structure can ensure that the sealing ribs 6. There will be no misalignment, wrinkles and other problems during compression deformation, ensuring good sealing performance. As a further improvement, two lugs 7 are provided on the metal substrate 1, and the upper rubber layer 3, the lower rubber layer 4, and the edge rubber layer 5 are all provided with extended parts corresponding to the lugs 7, and the extended parts connect the lugs 7 is fully covered, and the upper rubber layer 3 is provided with a positioning boss 8 at the position corresponding to the two lugs 7, and the two lugs 7 on the metal substrate 1 are located on the opposite sides of the metal substrate 1 Corresponding to the positioning hole on the cylinder head, the positioning boss 8 is a cone structure. The positioning boss 8 can be embedded in the positioning hole on the cylinder head, which plays the role of positioning and preventing misalignment. The positioning boss 8 of the cone structure is easier to combine and separate from the positioning hole, which is conducive to the sealing of the intake pipe Gasket installation and removal.

Claims (6)

1. a suction tude gasket seal, it is characterized in that comprising metal substrate (1), the intermediate portion of metal substrate (1) offers vent (2), the upper surface of metal substrate (1) is bonded with upper rubber layer (3), the lower surface bonds of metal substrate (1) has lower rubber layer (4), the outer ledge place of metal substrate (1) is bonded with boundary rubber layer (5), upper rubber layer (3), lower rubber layer (4), boundary rubber layer (5) are structure as a whole, and upper rubber layer (3) and lower rubber layer (4) respectively establish a circle seal bead (6).

2. suction tude gasket seal according to claim 1, it is characterized in that described upper rubber layer (3) is symmetrical arranged up and down with the seal bead (6) on lower rubber layer (4), the cross section of seal bead (6) is the trapezium structure narrowed gradually to its top by base portion.

3. suction tude gasket seal according to claim 1, it is characterized in that described metal substrate (1) is provided with two lugs (7), upper rubber layer (3), lower rubber layer (4), boundary rubber layer (5) are equipped with the expansion corresponding with lug (7) and by expansion by completely coated for lug (7), a positioning convex column (8) is respectively established at the upper position corresponding with two lugs (7) of upper rubber layer (3).

4. suction tude gasket seal according to claim 3, is characterized in that two lugs (7) point on described metal substrate (1) are in the upper relative both sides of metal substrate (1).

5. suction tude gasket seal according to claim 3, is characterized in that described positioning convex column (8) is cone structure.

6. the suction tude gasket seal according to claim arbitrary in claim 1 to 5, is characterized in that described upper rubber layer (3), lower rubber layer (4), boundary rubber layer (5) are fluororubber layer.