CN209340049U - Chain chamber cover - Google Patents

Abstract

The utility model discloses a chain chamber cover, which comprises an upper cover and a lower cover; the upper cover is fixed on the cylinder head and the valve chamber cover, and is used for sealing the cylinder head and the valve chamber cover; The lower cover is fixed on the cylinder body, and the upper end of the lower cover is fixed on the cylinder head, the lower end of the lower cover is fixed on the oil pan, the lower cover, the cylinder head and the oil pan The shell forms a sealed space. The chain room cover of the utility model avoids the breakage of the chain room cover through the split structure, avoids poor sealing through the inner chamfered plastic groove, and further avoids the risk of oil leakage on the three joint surfaces, and has a compact structure and is easy to use.

Description

chain room cover

technical field

The utility model relates to a novel split chain chamber cover structure which avoids the oil seepage risk of three joint surfaces and has an inner chamfered glue structure, and belongs to the field of structural design of engine parts.

Background technique

At present, the main form feature of the domestic chain room cover design is that the chain room cover covers the cylinder body and the cylinder head. The cover has high integration and flexible assembly and on-site management. However, this one-piece cover is at the three joint surfaces of the cylinder block, cylinder head and chain room cover. Due to the different thermal expansion coefficients of the cylinder block and the cylinder head, the cylinder head Due to different working conditions, the amount of deformation is different, which leads to a gap on the installation surface of the chain room cover. The sealing surface cannot be guaranteed to be on the same plane, and the sealant cannot make up for the large gap, which leads to sealing failure; at the same time, the previous chain room cover The groove-type glue tank structure adopted is likely to cause poor curing of the sealant and seal failure. At present, the oil leakage problem of the three-joint surface of gasoline engines is a problem that is difficult to solve and control for major OEMs. The oil leakage problem also directly affects the quality of the engine. Advantages and disadvantages; especially in the engine road test process, the problem of oil leakage from the three-joint surface of the gasoline engine often occurs.

Utility model content

The purpose of the utility model is to provide a chain room cover, which solves the above technical problems.

The utility model adopts the following technical solutions to solve the technical problems: a chain room cover, which includes an upper cover and a lower cover;

The upper cover is fixed on the cylinder head and the valve chamber cover for sealing the cylinder head and the valve chamber cover; the lower cover is fixed on the cylinder body, and the upper end of the lower cover is fixed on the The cylinder head, the lower end of the lower cover is fixed on the oil pan, and the lower cover, the cylinder head and the oil pan form a sealed space.

Optionally, the inner edge of the upper cover and the contact surface of the cylinder and the valve chamber cover forms a chamfer.

Optionally, the inner edge of the lower cover in contact with the cylinder is chamfered.

The utility model has the following beneficial effects: the chain room cover of the utility model avoids the breakage of the chain room cover through the split structure, avoids poor sealing through the inner chamfered glue groove, and then avoids the risk of oil leakage on the three joint surfaces, and Compact structure and convenient application.

Description of drawings

Fig. 1 is the structural representation of the groove-shaped glue-holding groove of the chain chamber cover of the prior art;

Fig. 2 is the schematic diagram of the upper cover of the chain room cover of the present utility model;

Fig. 3 is the schematic diagram of the lower cover of the chain room cover of the present utility model;

Fig. 4 is a structural schematic diagram of the inner chamfer of the chain chamber cover of the present invention;

Fig. 5 is a schematic diagram of the installation position of the chain room cover of the present invention;

Fig. 6 is a schematic diagram of the installation position of the chain room cover of the present invention;

The marks in the figure are: 1-upper cover; 2-lower cover; 3-inner chamfer; 4-valve chamber cover; 5-cylinder head; 6-cylinder block; 7-oil pan.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is further elaborated.

Example 1

This embodiment provides a chain room cover, which includes an upper cover 1 and a lower cover 2;

The upper cover is fixed on the cylinder head and the valve chamber cover for sealing the cylinder head and the valve chamber cover; the lower cover is fixed on the cylinder body, and the upper end of the lower cover is fixed on the The cylinder head, the lower end of the lower cover is fixed on the oil pan, and the lower cover, the cylinder head and the oil pan form a sealed space.

In this embodiment, the inner edge of the upper cover and the contact surface of the cylinder and the valve chamber cover forms a chamfer, and the inner edge of the lower cover that contacts the cylinder body forms a chamfer, that is, Both the upper cover and the lower cover adopt an internal chamfer structure. Compared with the previous groove-shaped rubber groove structure, the sealant cures faster and has a better sealing effect.

The chain room cover of the utility model avoids the breakage of the chain room cover through the split structure, avoids the poor sealing through the inner chamfered plastic groove, and further avoids the risk of oil leakage on the three joint surfaces, and has a compact structure and is easy to use.

In the chain chamber cover of the utility model, a chain chamber cover is split into an upper cover and a lower cover, the upper cover seals two parts of the same material, the cylinder cover and the valve chamber cover, and the lower cover seals the cylinder body , to avoid the risk that sealing two parts with different materials will produce gaps that cannot be compensated by the sealant, and at the same time propose an inner chamfering structure to replace the groove-shaped structure of the previous product to ensure that the sealant cures well and the sealing effect is good.

The sequence of the above embodiments is only for convenience of description, and does not represent the advantages or disadvantages of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (3)

1. A chain chamber cover, characterized in that it comprises an upper cover and a lower cover; The upper cover is fixed on the cylinder head and the valve chamber cover for sealing the cylinder head and the valve chamber cover; the lower cover is fixed on the cylinder body, and the upper end of the lower cover is fixed on the The cylinder head, the lower end of the lower cover is fixed on the oil pan, and the lower cover, the cylinder head and the oil pan form a sealed space. 2. The chain room cover according to claim 1, wherein the upper cover is chamfered with an inner edge of a contact surface of the cylinder and the valve room cover. 3. The chain room cover according to claim 2, wherein an inner edge of the lower cover in contact with the cylinder body is chamfered.