KR200418673Y1 - Gasket with stoppering protrusions. - Google Patents

Abstract

The present invention is a laminated gasket composed of one or more plates joined by a caulking to be placed between the joining surface between the cylinder head and the cylinder block to seal between the joining surfaces, wherein the plate laminated at the bottom of the plate The present invention relates to a laminated gasket provided with a stoppering protrusion, characterized in that a protrusion formed in the same direction as the convex portion is further formed.

 According to the above configuration, the laminated gasket provided with the gripping protrusions of the present invention has a protrusion on the bottom plate to prevent the gripping between the laminated gaskets, thereby making it easy to work with a plurality of joining surfaces of the cylinder head and the cylinder block. There is an advantage that can prevent the placement of the laminated gasket.

Gasket, Plate, Stopper Plate, Bead Plate, Caulking, Turning

Description

Gasket with non-stick protrusions. {GASKET WITH PROTRUSION FOR PINCH PREVENTION}

1 is a cross-sectional view showing a state in which a laminated gasket according to the prior art is loaded;

Figure 2a is a plan view showing a stopper plate in the case of consisting of a bead plate and a stopper plate as an embodiment of a laminated gasket of the present invention,

FIG. 2B is a sectional view of part A in FIG. 2A;

Figure 3a is a plan view showing a bead plate in the case of consisting of a bead plate and a stopper plate as an embodiment of a laminated gasket of the present invention,

3B is a cross-sectional view illustrating a portion B in FIG. 3A;

Figure 4 is an embodiment of the laminated gasket of the present invention in the case of the bead plate and the stopper plate in the case of combining the stopper plate and the bead plate on the bottom in the upper portion A shown in Figure 2b and 3b Perspective view showing a state in which the illustrated part B is coupled,

Figure 5 is a cross-sectional view showing a state in which the laminated gasket is loaded in the case of consisting of a bead plate and a stopper plate as an embodiment of the laminated gasket of the present invention.

    ♣ Explanation of symbols for main part of drawing ♣

1: Stopper Plate 2: Flat Part

3: bore bead 4: oil bead

5: toilet bead 6: caulking

6a: protrusion 21: bead plate

22: flat part 23: bore

26: caulking 26a: projection

The present invention relates to a gasket provided with a stopper protrusion, and more particularly, in a laminated gasket that combines a plurality of plates by respective caulking, by forming a protrusion separately from the caulking at the bottom of the plate, the gap between the stacked gaskets is formed. The present invention relates to a laminated gasket that can be prevented.

In general, a gasket is inserted between a component or a mating surface or contact surface between fluid and gas, such as an engine (internal combustion engine), an oil / pneumatic device, to prevent leakage from being leaked. .

Looking at the gasket applied to an engine part such as a vehicle, in the engine of the vehicle, in particular, it is installed between the joining surface of the cylinder block and the cylinder head and between the contact surface of the cylinder head and the cylinder head cover to function as a sealing means. It is in charge of and prevents leakage of high pressure combustion gas in the combustion chamber. The interior of the combustion chamber is in a mechanical environment where the pressure inside the cylinder changes continuously during the four-stroke cycle of compression, expansion, explosion, exhaust, and the like.

In particular, the internal gas pressure during explosion is so high that it exceeds the clamping force of the bolt coupling that connects the cylinder head to the cylinder block, so the force that pushes the cylinder head upwards (hereinafter referred to as 'lift force') Generated, there is a fine gap between the gasket and the cylinder head to the cylinder block.

For example, in a compression ignition engine, when the cylinder head is lifted up by 10 μm (0.01 mm) to 15 μm (0.015 mm) in height from the top of the cylinder block when subjected to a lift force, the fluid gap is between the cylinder head and the cylinder block. Will make

At this time, since the internal gas pressure is approximately 200 times the atmospheric pressure, the internal gas is counted outside through the gap, which adversely affects the combustion efficiency of the internal combustion engine.

Since these minute gaps change fluidly with the change of load inside the cylinder during the course of the cycle, a laminated gasket with elasticity and durability is required to maintain a satisfactory seal in the internal combustion engine and to suppress the generation of fine gaps generated during explosion. Do.

In general, laminated gaskets have been used in which a plurality of metal sheets (plates) are laminated and bonded.

For example, the laminated gasket may be composed of two plates, and a bead plate having a bead formed to allow the joint surface of the cylinder head and the cylinder block to be sealed by elastic force, and a decrease in sealing performance due to complete compression of the bead of the bead plate. It can be configured as a stopper plate to prevent it.

As such, there are basically methods for laminating and joining two plates, such as grommets, hemmings, and jags, which have been mainly used so as not to be separated from each other by riveting, yag welding, and the like.

However, when the plates are coupled to each other by riveting as described above, a separate riveting work is required, and in the case of yag welding, thermal stress is generated on the plate assembled by heat generated by welding. Thermal deformation occurs in the laminated gasket assembled by this thermal stress, which also has to be a separate welding process.

Due to this problem, the plates are combined with each other by the caulking method, and the caulking method forms a caulk corresponding to each plate, thereby easily inserting the corresponding caulking without a separate revetting or welding process. It is used in combination.

However, in the case of the caulking method, when the stacked gasket is to be loaded and one laminated gasket is used if necessary, as shown in FIG. 1, the gasket is coupled to each other due to the insertion of the caulking into the stacked gaskets (G, G ′, G ″). Separation is not easy, there is even a problem that the assembly by inserting two laminated gaskets in the cylinder block and the cylinder head.

Therefore, the present invention is to solve the above-mentioned weakness, in the laminated gasket that combines a plurality of plates by each caulking, by forming a protrusion separately from the caulking on the bottom plate, the laminated type that can prevent the interception of the laminated gaskets To provide a gasket.

An object of the present invention described above is a laminated gasket composed of a plurality of plates joined by a caulking to be placed between the joining surface of the cylinder head and the cylinder block to seal between the joining surfaces, the laminated gasket is laminated at the bottom of the plate The plate is achieved by a laminated gasket provided with non-sticking projections, characterized in that the projections are formed in the same direction as the convex portions of the caulking.

Hereinafter, with reference to the accompanying drawings it will be described in detail with respect to the lamination-type gasket provided with a stopper projection according to a preferred embodiment of the present invention.

2A is a plan view showing a stopper plate in the case of the bead plate and the stopper plate as one embodiment of the laminated gasket of the present invention, and FIG. 2B is a cross-sectional view showing part A in FIG. 2A, and FIG. 3A is a plan view showing the bead plate in the case of the bead plate and the stopper plate as one embodiment of the laminated gasket of the present invention, Figure 3b is a cross-sectional view showing a portion B in Figure 3a, Figure 4 is the present invention In one embodiment of the laminated gasket of the bead plate and the stopper plate in the case of combining the stopper plate on the bottom of the bead plate laminated to combine the portion A shown in Figure 2b and portion B shown in Figure 3b 5 is a perspective view showing a coupled state, and FIG. 5 is a bead as an embodiment of the laminated gasket of the present invention. In the case that consists of a byte and a stopper plate is a sectional view showing a state in stacking the stack-type gasket.

The present invention is a laminated gasket composed of a plurality of plates in the plate is configured with a plurality of caulking for coupling between the plates, which is located at the lowest layer to prevent the formation of the gap between the laminated gasket by the configuration of this caulking The protrusions are formed on the plate to prevent interception between the laminated gaskets.

Hereinafter, as an embodiment of the present invention as shown in Figures 2 to 5 will be described taking the case of a laminated gasket composed of a bead plate and a stopper plate as an example.

As shown in FIG. 2A, a typical stopper plate 21 has a predetermined number of bores 28 (eg, applied to a four-cylinder cylinder) according to the number of cylinder cylinders of an internal combustion engine. Is formed. A coolant supply hole 29 and an oil supply hole 27 for cooling the cylinder and supplying lubricating oil are formed at the outer edges of the bores, that is, between the bore and the edge of the plate. In addition, a plurality of caulking 26 is formed to engage the stopper plate 21 with the bead plate, which will be described below. As shown in FIG. 2B, the caulking 26 is vertically raised from the flat portion 22 to form a flat surface at the top thereof, and the concave portion is formed in the concave portion of the caulking 6 formed in the bead plate, which will be described below. As shown in FIG. 4, the stopper plate 21 and the bead plate 1 stacked thereon are coupled to each other by being inserted.

In addition, the stopper plate 21 is provided with a bolt insertion hole 30 for fastening to the cylinder block (not shown) and the cylinder head (not shown).

Meanwhile, the bead plate 1 stacked below the stopper plate 21 has a flat portion 2, a bore 8, and a cooling water supply corresponding to each component of the stopper plate 21 as shown in FIG. 3A. The hole 9, the oil supply hole 7, and the bolt insertion hole 10 are configured in the same shape at the same position.

However, the bead plate (1) is different from the stopper plate (21) is the bore bead (3) is formed in the periphery of the bore (8) to prevent the leakage of the combustion gas by the elastic force, the high-pressure oil leaks An oil bead 4 is formed around the oil supply hole 7 to prevent the combustion gas, oil coolant, and the like from leaking from the joining surface of the cylinder block and the cylinder head. The edge bead 5 is formed to be spaced apart.

As shown in FIGS. 3A and 3B, the bead plate 1 is also formed with the same shape in the bead plate 1 as the shape opposite to the caulking 26 of the stopper plate 21. As the caulking 6 is formed in this way, as shown in FIG. 4, the concave portion of the caulking 26 formed in the stopper plate 21 is inserted into the concave portion of the caulking 6, thereby beading the lower portion of the stopper plate 21. The plates 1 are laminated and joined.

However, the bead plate 1 is further provided with a projection 6a in the same direction as the caulking 6 at the periphery of the caulking 6. The projection 6a is formed in the same direction as the convex portion of the caulking 6. In FIG. 3B, the protrusion 6a is formed of a curved surface that is different from the caulking 6, but the shape is not limited thereto, and may be selectively configured in consideration of ease of molding and the like. The protrusion 6a is formed to prevent the other layered gaskets G ′ stacked on the bottom of the stacked gaskets G formed of the stopper plate 21 and the bead plate 1 from being prevented.

In more detail, as shown in FIG. 5, the laminated gasket G including the stopper plate 21 and the bead plate 1 includes another stopper plate 21 'and the bead plate 1' at the bottom. When the stacked gaskets G 'are stacked and stacked gaskets G ″ composed of other stopper plates 21 ″ and bead plates 1 ″ are stacked thereon, the respective stopper plates and bead plates are illustrated in FIG. 4. As shown in Fig. 2, the bead plate 1 at the bottom of the laminated gasket G stacked on the upper side of the bead plate 1 has a caulking 6 at the bottom thereof due to the configuration of the projection 6a. Insertion is prevented in the caulking 26 'formed on the stopper plate 21' of the upper part of the upper part), so that the lamination gaskets G and G 'are prevented from interweaving. In addition, even in the laminated gasket G 'stacked in the middle and the laminated gasket G ″ stacked in the lowermost part, the interception is prevented by the projections 6a' formed in the laminated gasket G '.

The above-mentioned information illustrates a case in which the laminated gasket includes only the stopper plate and the bead plate, and the present invention is not limited thereto. The plate is combined with a stopper plate and a bead plate as well as a structure for inserting an inner plate. In the laminated gasket to which the coupling method by caulking is applied, a protrusion is formed separately from the caulking on the lowermost or uppermost plate so as to prevent the interlayer gasket from being caught.

Laminated gaskets with gripping protrusions of the present invention have protrusions on the lowermost plate to prevent mutual gripping between the laminated gaskets, making it easy to work and placing a plurality of laminated gaskets at the joint surface of the cylinder head and cylinder block. There is an advantage that can be prevented.

Although the technical idea of the laminated gasket provided with the non-obtrusive protrusion of the present invention described above was described with the accompanying drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (1)

A laminated gasket composed of a plurality of plates joined by a caulking to be placed between a joining surface of a cylinder head and a cylinder block to seal between the joining surfaces, Laminated gasket provided with a stoppering projection, characterized in that the plate which is laminated at the lowest end of the plate is formed with projections formed in the same direction as the convex portion of the caulking.

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