Cylinder cover gasket

Abstract

The utility model relates to a cylinder cover gasket which comprises a gasket body, a combustion chamber hole, a water channel hole and a bolt hole are arranged on the gasket body, the cylinder cover gasket further comprises a deformation restraining structure arranged on the gasket body, the deformation restraining structure comprises an upper groove set and a lower boss set, the upper groove set comprises a plurality of upper grooves arranged in sequence, and the lower boss set comprises a plurality of lower grooves arranged in sequence. The upper groove is formed in the front face of the gasket body, the lower boss set comprises a plurality of lower bosses arranged in sequence, the lower bosses are arranged on the back face of the gasket body, and the upper groove and the lower bosses are oppositely arranged on the gasket body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engine parts, concretely relates to a cylinder head gasket. BACKGROUND

[0002] The cylinder head gasket is an important sealing piece between the cylinder cover and the cylinder body of the engine, the traditional cylinder head gasket needs to ensure the independent sealing of the cylinder port combustion gas, the outer peripheral cooling liquid, the high-pressure oil, the low-pressure oil, the bolt and the chain type area, therefore, whether the sealing performance of the cylinder head gasket is superior will directly influence various indexes of the engine, for example: power output, cooling effect, lubricating effect and the like.The traditional cylinder head gasket realizes the independent sealing of various areas through the convex rib structure design, but in actual use, since the engine cylinder will be ignited and exploded in turn, the temperature field and the cylinder port will make the cylinder body and the cylinder cover produce violent deformation in the ignition and explosion process, the local deformation amount of the engine is very easy to intensify, thereby influencing the sealing function of the cylinder head gasket, therefore, the traditional cylinder head gasket is difficult to guarantee good sealing effect only by relying on the convex rib structure. SUMMARY

[0003] In view of the defects of the prior art described above, the technical problem to be solved by the utility model is to provide a cylinder head gasket, which can reduce the local deformation amount of the engine cylinder body and the cylinder cover and improve the sealing reliability of the cylinder head gasket.

[0004] To achieve the above-mentioned purpose, the utility model provides a cylinder head gasket, which comprises a gasket body, the gasket body is provided with a combustion chamber hole, a water channel hole and a bolt hole, further comprises a deformation suppression structure arranged on the gasket body, the deformation suppression structure comprises an upper groove group and a lower boss group, the upper groove group comprises a plurality of upper grooves arranged in sequence, the upper grooves are arranged on the front surface of the gasket body, the lower boss group comprises a plurality of lower bosses arranged in sequence, the lower bosses are arranged on the back surface of the gasket body, and the upper grooves and the lower bosses are oppositely arranged on the gasket body.

[0005] Further, it further comprises a sealing rib structure, the sealing rib structure comprises a cylinder port sealing rib arranged at the combustion chamber hole, a water channel sealing rib arranged at the water channel hole and an oil channel sealing rib arranged at the bolt hole.

[0006] Further, the gasket body is provided with a rubber coating.

[0007] Further, the depth of the upper groove is 0.07-0.22mm.

[0008] Further, the height of the lower boss is 0.07-0.22mm.

[0009] As described above, the cylinder head gasket disclosed by the utility model has the following beneficial effects:

[0010] By setting the deformation suppression structure 2 composed of the upper groove group and the lower boss group, the bolt axial force of the cylinder head gasket can be concentrated, the local deformation amount of the engine block and the cylinder head is reduced, and in the case that the deformation of the engine block and the cylinder head is not severe, the upper groove group and the lower boss group can also compensate for the sealing gap between the cylinder head gasket and the engine block and the cylinder head, so as to improve the durability and sealing reliability of the cylinder head gasket, and the performance attenuation of the cylinder head gasket can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a structure schematic view of the cylinder head gasket in the utility model.

[0012] Fig. 2 It is a structure schematic view of the deformation suppression structure in the utility model.

[0013] BRIEF DESCRIPTION OF DRAWINGS

[0014] 1, gasket body, 101, combustion chamber hole, 102, water channel hole, 103, bolt hole, 111, cylinder port sealing rib, 112, water channel sealing rib, 113, oil channel sealing rib, 2, deformation suppression structure, 201, upper groove, 202, lower boss. DETAILED DESCRIPTION

[0015] The specific embodiments of the utility model will be further described in detail below in combination with the drawings. These embodiments are only used to illustrate the utility model, and are not limited to the utility model.

[0016] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0018] In addition, in the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise stated.

[0019] Referring to Figs. 1-2 The utility model provides a cylinder cover gasket, including gasket body 1, gasket body 1 is provided with combustion chamber hole 101, water channel hole 102 and bolt hole 103, still including the inhibiting deformation structure 2 of setting in gasket body 1, inhibiting deformation structure 2 includes upper groove group and lower boss group, upper groove group includes several upper grooves 201 arranged in sequence, upper groove 201 sets up at the front of gasket body 1, preferably, several upper grooves 201 can be arranged according to actual conditions along any direction on the front of cylinder cover gasket;Lower boss group includes several lower bosses 202 arranged in sequence, lower boss 202 sets up at the back of gasket body 1, preferably, several lower bosses 202 can be arranged according to actual conditions along any direction on the back of cylinder cover gasket;Upper groove 201 and lower boss 202 are oppositely arranged on gasket body 1, preferably, upper groove 201 and lower boss 202 are formed by stamping.

[0020] The basic working principle of the cylinder cover gasket of the utility model is that: by setting inhibiting deformation structure 2, upper groove group and lower boss group are set by effective alignment of independent units, respectively change the force received by the front and back of gasket body 1, can effectively concentrate the bolt axial force of cylinder cover gasket, and respectively exert reverse force on engine cylinder block and cylinder cover, so that the cylinder cover gasket is not easy to be crushed, that is, the bolt axial force can be converted into reverse force for inhibiting the overall deformation of engine cylinder block and cylinder cover, so as to achieve the effect of inhibiting the deformation of engine cylinder block and cylinder cover, effectively reduce the deformation amount of engine cylinder block and cylinder cover, thereby improving the sealing reliability of cylinder cover gasket.

[0021] Referring to Figs. 1-2 The utility model is further described below with one specific embodiment:

[0022] In the embodiment, referring to Fig. 1As a preferred design, the sealing rib structure further comprises a cylinder port sealing rib 111 arranged at the combustion chamber hole 101, a water channel sealing rib 112 arranged at the water channel hole 102 and an oil channel sealing rib 113 arranged at the bolt hole 103, in particular, the combustion chamber hole 101 is matched with the engine combustion chamber, the cylinder port sealing rib 111 arranged at the combustion chamber hole 101 can seal the combustion chamber, the water channel hole 102 can effectively limit the flow rate of the engine coolant through the cross-sectional area, the water channel sealing rib 112 arranged at the water channel hole 102 can seal the coolant, the bolt hole 103 is matched with the engine bolt, on the one hand, the bolt hole 103 can ensure the normal operation of the engine lubrication system oil return function, on the other hand, the bolt hole 103 can ensure the accurate installation position of the cylinder head gasket, and the oil channel sealing rib 113 arranged at the bolt hole 103 can seal the engine oil.

[0023] In the embodiment, referring to Fig. 1 As a preferred design, the gasket body 1 is provided with a rubber coating, and the rubber coating can improve the protection performance of the gasket body 1, so that the cylinder head gasket is not easy to be damaged in actual use, and the reliability of the cylinder head gasket is improved.

[0024] In the embodiment, referring to Fig. 1 As a preferred design, the depth of the upper groove 201 is 0.07-0.22 mm, which can be flexibly set according to actual conditions and meet the requirements in different working conditions.

[0025] In the embodiment, referring to Fig. 1 As a preferred design, the height of the lower boss 202 is 0.07-0.22 mm, which can be flexibly set according to actual conditions and meet the requirements in different working conditions.

[0026] As can be seen from the above, the cylinder head gasket has the following beneficial effects:

[0027] By arranging the deformation suppression structure 2 composed of the upper groove group and the lower boss group, the bolt axial force of the cylinder head gasket can be concentrated, the local deformation amount of the engine cylinder body and the cylinder cover is reduced, and in the case that the deformation of the engine cylinder body and the cylinder cover is not severe, the upper groove group and the lower boss group can also compensate for the sealing gap between the cylinder head gasket and the engine cylinder body and the cylinder cover, so as to improve the durability and sealing reliability of the cylinder head gasket, and the performance attenuation of the cylinder head gasket can be avoided.

[0028] In summary, the utility model effectively overcomes the shortcomings in the prior art and has high industrial utilization value.

[0029] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A cylinder head gasket comprising a gasket body (1) provided with a combustion chamber hole (101), a water passage hole (102) and a bolt hole (103), characterized in that: The gasket body (1) is provided with a deformation restraining structure (2) comprising an upper groove set and a lower boss set.

2. The cylinder head gasket of claim 1, wherein: The gasket body (1) is provided with a sealing rib structure comprising a cylinder port sealing rib (111) arranged at the combustion chamber hole (101), a water channel sealing rib (112) arranged at the water channel hole (102) and an oil channel sealing rib (113) arranged at the bolt hole (103).

3. The cylinder head gasket of claim 1, wherein: The gasket body (1) is provided with a rubber coating.

4. The cylinder head gasket of claim 1, wherein: The depth of the upper groove (201) is 0.07-0.22 mm.

5. The cylinder head gasket of claim 1, wherein: The height of the lower boss (202) is 0.07-0.22 mm.

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