Cylinder head cover for engine

Abstract

The embodiment of the utility model provides a cylinder head cover for an engine. The cylinder head cover comprises a shell, filter cotton, a box and a cover plate, the shell is provided with an exhaust pipe, a mounting surface, an engine oil opening cover hole and an oil seal hole, and the shell and the exhaust pipe are fixedly and integrally connected; an exhaust hole and an oil return hole are formed in the cover plate; the shell is fixedly connected with the box, and the filter cotton is arranged in the box; and the shell is fixedly connected with the cover plate. According to the engine cylinder head cover, the shell, the box and the cover plate are simple in structure, easy to form and simple in assembly process, and therefore the design and manufacturing cost of the engine cylinder head cover is low.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a cylinder head cover for an engine. Background Art

[0002] The cylinder head cover is a cover on the engine cylinder block, which can prevent external impurities from entering the engine and also play a sealing role. The most basic function of the cylinder head cover is to cover and seal the cylinder head of the engine, keeping the engine oil inside and isolating pollutants such as dirt and moisture from the outside.

[0003] At present, most engine cylinder head covers basically adopt conventional design, with a single design, made of stamped steel, without lightweight and noise reduction measures, and have deficiencies in structure and material. For example, aluminum alloy cylinder head covers are usually heavy, with high manufacturing costs, obvious noise, low processing dimensional accuracy, and rough appearance; in addition, aluminum alloy cylinder head covers use paper-based seals, and the sealing materials are easy to wear and cause leakage.

[0004] Therefore, the prior art lacks an engine cylinder head cover that is easy to form, high in strength, low in cost, and can be effectively sealed. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide an engine cylinder head cover that is easy to form, high in strength, low in cost, and can effectively seal, so as to overcome the defects of the prior art. The specific technical solution is as follows:

[0006] A cylinder head cover for an engine, characterized in that it comprises a shell, filter cotton, a box and a cover plate;

[0007] The housing is provided with an exhaust pipe, a mounting surface, an oil port cover hole and an oil seal hole, and the housing and the exhaust pipe are fixedly connected in one piece;

[0008] The cover plate is provided with an exhaust hole and an oil return hole;

[0009] The shell and the box are fixedly connected, and the filter cotton is arranged inside the box;

[0010] The shell and the cover plate are fixedly connected.

[0011] Optionally, the housing and the box are fixedly connected by bonding or a slot structure;

[0012] The shell and the cover plate are fixedly connected by welding.

[0013] Optionally, the shell is specifically a cavity with an opening on one side, the mounting surface is located on the open side of the cavity, and the inner wall of the cavity is provided with staggered reinforcing ribs.

[0014] Optionally, the number of the oil filler cover hole is one.

[0015] Optionally, the mounting surface has a sealing groove, in which a rubber sealing pad is installed.

[0016] Optionally, a through hole is provided on the mounting surface, and a metal insert or a combination bolt is fixed in the through hole.

[0017] Optionally, the metal insert is embedded in the through hole, or is fixed in the through hole by interference fit or bonding, and the combination bolt is fixed in the through hole by interference fit or bonding.

[0018] Optionally, the number of the through holes is 11.

[0019] Optionally, the cylinder head cover further includes an oil return valve, the oil return valve and the oil return hole are fixedly connected, and a rubber gasket is arranged between the oil return valve and the oil return hole.

[0020] Optionally, the shell, the box and the cover are all integrally formed by injection molding.

[0021] Compared with the prior art, the shell of the cylinder head cover for the engine of the utility model is made of fiber-reinforced thermoplastic composite material, which has a simple structure, is easy to form, has low design and manufacturing costs, and a simple assembly process. The cylinder head cover is integrated with the cover plate and the filter cotton to reduce the assembly process of the whole vehicle and save time; it reduces the development of spare parts and reduces costs. The cylinder head cover uses a rubber gasket instead of a paper-based gasket, and the elasticity of the rubber is used to ensure the airtightness between the shell and the cylinder body. The rubber has good wear resistance, and the rubber gasket can be recycled after the cylinder head cover is disassembled. The breather is equipped with an oil-gas separation device, which can effectively filter the gas in the engine oil and ensure the normal operation of the engine. Reinforcing ribs are provided on the outside of the cylinder head cover to ensure the impact resistance and high strength of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A bottom view of the structural schematic diagram of an embodiment of a cylinder head cover provided by the utility model;

[0024] Figure 2 A top view of the structure schematic diagram of an embodiment of a cylinder head cover provided by the utility model;

[0025] Figure 3This is a cross-sectional view of the structural schematic diagram of an embodiment of a cylinder head cover provided by the utility model.

[0026] in, Figures 1 to 3 The corresponding relationship between the component names and the corresponding reference numerals is as follows:

[0027] 1 housing, 11 exhaust pipe, 12 mounting surface, 13 oil port cover hole, 14 oil seal hole, 15 staggered reinforcement ribs, 16 sealing groove, 17 through hole;

[0028] 2 filter cotton

[0029] 3 boxes

[0030] 4 cover plate, 41 exhaust hole, 42 oil return hole;

[0031] 5. Oil return valve. DETAILED DESCRIPTION

[0032] 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.

[0033] It should be noted that the locative words top and bottom in this embodiment are based on Figure 3 The position of the cylinder head cover embodiment shown is defined as a reference.

[0034] Please combine Figure 1 , Figure 2 and Figure 3 , Figure 1 A bottom view of the structural schematic diagram of an embodiment of a cylinder head cover provided by the utility model; Figure 2 A top view of the structure schematic diagram of an embodiment of a cylinder head cover provided by the utility model; Figure 3 This is a cross-sectional view of the structure of the cylinder head cover embodiment provided by the utility model. Figure 1 and Figure 3 As shown, the cylinder head cover for the engine provided in this embodiment includes a shell body 1, filter cotton 2, box 3 and cover 4; the shell body 1 is provided with an exhaust pipe 11, a mounting surface 12, an oil port cover hole 13 and an oil seal hole 14, and the shell body 1 and the exhaust pipe 11 are fixedly connected as one; the cover plate 4 is provided with an exhaust hole 41 and an oil return hole 42; the shell body 1 and the box 3 are fixedly connected, and the filter cotton 2 is arranged inside the box 3; the shell body 1 and the cover plate 4 are fixedly connected.

[0035] Among them, in order to facilitate the discharge of oil and gas, a tubular exhaust pipe 11 is provided on the shell 1, and the exhaust pipe 11 and the shell 1 are designed to be fixedly connected as one. Furthermore, in order to improve the strength of the exhaust pipe 11, a transverse clamp structure is arranged on the outer surface of the exhaust pipe 11. Specifically, in this embodiment, the number of transverse clamps is 2, and the two transverse clamps are distributed in parallel, the thickness of each transverse clamp is 2.5 mm, and the distance between the two transverse clamps is 6 mm.

[0036] Specifically, the shell 1 and the box 3 are fixedly connected by bonding or a slot structure. For example, a slot can be provided inside the shell 1, and a claw can be provided outside the box 3, and the shell 1 and the box 3 can be connected by snapping the claw into the slot, or the shell 1 and the box 3 can be fixedly connected by adhesive bonding.

[0037] Specifically, the cover plate 4 and the shell 1 are fixedly connected by welding. For example, welding ribs can be provided on the cover plate 4 and a welding surface can be provided on the shell 1, or a welding surface can be provided on the cover plate 4 and a welding rib can be provided on the shell 1 to achieve fixed connection between the cover plate 4 and the shell 1.

[0038] Specifically, in order to separate the oil and gas in the engine oil, an oil and gas separation device is provided in the housing 1 to separate and filter out the gas in the engine oil.

[0039] In this embodiment, the oil-gas separation device is arranged inside the shell 1, and a box 3 is fixedly connected inside the shell 1. A filter cotton 2 is arranged inside the box 3. Through the impact mode, the gas in the engine oil and the engine oil are separated and filtered. The separated and filtered gas is discharged through the exhaust pipe 11, and the separated and filtered engine oil re-enters the shell 1 through the oil return hole 42 for use, thereby ensuring the normal operation of the engine.

[0040] In order to better understand the specific structure of the engine cylinder head cover, please refer to Figure 2 .

[0041] It can be understood that the mounting surface 12 is the flange surface at the bottom of the cylinder head cover.

[0042] The cylinder head cover for the engine of the embodiment of the utility model is composed of a shell 1, and the shell 1 has a simple structure, is easy to form, and has a simple assembly process, thereby reducing the design and manufacturing costs of the cylinder head cover for the engine.

[0043] Specifically, in order to further improve the strength of the cylinder head cover for the engine and reduce stress concentration, the housing 1 is specifically a cavity with an opening on one side, the mounting surface 12 is located on the side of the cavity opening, and the inner wall of the cavity is provided with staggered reinforcing ribs 15.

[0044] Optionally, the number of the oil port cover hole 13 is one.

[0045] Optionally, in this embodiment, the number of the oil seal holes 14 is specifically 6, including 4 large oil seal holes and 2 small oil seal holes. The oil seal holes 14 are fixedly connected to the high-pressure oil pipe on the engine by installing a rubber oil seal.

[0046] Furthermore, in order to ensure the sealing performance of the cylinder head cover, the mounting surface 12 has a sealing groove 16 , in which a rubber sealing gasket is installed.

[0047] Optionally, in order to improve the overall installation strength of the cylinder head cover, a through hole 17 is provided on the installation surface 12 , and a metal insert or a combination bolt is fixed in the through hole 17 .

[0048] Specifically, in order to ensure that the metal insert can be stably fixed in the through hole 17, the metal insert can be embedded in the through hole 17, or fixed in the through hole 17 by interference fit or bonding, and bolts are fixed in the metal insert, and the bolts are fixed in the through hole 17 by interference fit or bonding.

[0049] Alternatively, a combination bolt is fixed in the through hole 17 , and the combination bolt is fixed in the through hole 17 by interference fit or bonding. Specifically, the combination bolt can be a bolt and a metal insert assembly fixed as one.

[0050] More specifically, in this embodiment, the number of the through holes 17 is eleven.

[0051] Specifically, in order to effectively avoid oil leakage from the cylinder head cover, in this embodiment, the cylinder head cover also includes an oil return valve 5 to discharge the engine oil back to the cavity of the housing 1 in time. The oil return valve 5 and the oil return hole 42 are fixedly connected, and a rubber gasket is arranged between the oil return valve 5 and the oil return hole 42.

[0052] More specifically, the oil return valve 5 and the oil return hole 42 can be fixedly connected by a snap-fit ​​structure, that is, a snap point is set on the oil return hole 42, and a claw is set on the oil return valve 5, and the oil return valve 5 and the oil return hole 42 are fixedly connected by clamping the claw on the snap point; the oil return valve 5 and the oil return hole 42 can also be fixedly connected by a welding structure, that is, a welding rib is set on the oil return hole 42, and a welding surface is set on the oil return valve 5, and the oil return valve 5 and the oil return hole 42 are fixedly connected by welding.

[0053] Specifically, the housing 1, the box 3 and the cover plate 4 are integrally formed by injection molding, and have a simple structure and low design and manufacturing costs.

[0054] Optionally, the housing 1 of the cylinder head cover of this embodiment is obtained by injection molding. During injection molding, a through hole 17 is provided on the mounting surface 12. The metal insert in the through hole 17 can be fixed by placing the metal insert in the position of the mold through hole 17 in advance and directly embedding it in the through hole 17 during injection molding, or by interference fit or bonding between the metal insert and the through hole 17. The housing 1 is bolted to the engine through the through hole 17, and the embedded metal insert ensures the connection strength. In order to ensure the sealing of the connection between the housing 1 and the engine, a rubber sealing gasket is provided in the sealing groove 16 of the rectangular structure on the sealing surface, and the elasticity of the rubber sealing gasket is utilized to ensure the sealing between the housing 1 and the engine.

[0055] Since the shell 1, the box 3 and the cover plate 4 are all injection molded, the structure is simple, the manufacturing cost is low, and it is easy to assemble. A rubber gasket is used instead of a conventional paper-based gasket, and the elasticity of the rubber is used to ensure the air tightness between the shell and the cylinder body. Since the rubber has good wear resistance, the rubber gasket can be recycled after the cylinder head cover is disassembled. The cylinder head cover is made of fiber-reinforced thermoplastic composite material, which can reduce the noise pollution generated by the car during driving. The cylinder head cover shell is equipped with a filter cotton filter device, which can effectively filter the oil in the oil-gas mixture to prevent the oil from being discharged to the outside with the air, saving the use of oil while avoiding pollution to the environment and ensuring the normal operation of the engine. Reinforcement ribs are arranged on the outside of the shell, and the design of the reinforcement ribs ensures the impact resistance and high strength of the shell.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A cylinder head cover for an engine, characterized in that: The cylinder head cover for an engine comprises a housing (1), filter cotton (2), a box (3) and a cover plate (4); The housing (1) is provided with an exhaust pipe (11), a mounting surface (12), an oil port cover hole (13) and an oil seal hole (14); the housing (1) and the exhaust pipe (11) are fixedly connected in one piece; The cover plate (4) is provided with an exhaust hole (41) and an oil return hole (42); The housing (1) and the box (3) are fixedly connected, and the filter cotton (2) is arranged inside the box (3); The shell (1) and the cover plate (4) are fixedly connected.

2. The cylinder head cover for an engine according to claim 1, characterized in that: The housing (1) and the box (3) are fixedly connected by bonding or a slot structure; The shell (1) and the cover plate (4) are fixedly connected by welding.

3. The cylinder head cover for an engine according to claim 2, characterized in that: The shell (1) is specifically a cavity with an opening on one side, the mounting surface (12) is located on the open side of the cavity, and the inner wall of the cavity is provided with staggered reinforcing ribs (15).

4. The cylinder head cover for an engine according to claim 1, characterized in that: The number of the oil port cover hole (13) is one.

5. The cylinder head cover for an engine according to claim 1, characterized in that: The mounting surface (12) has a sealing groove (16), and a rubber sealing pad is installed in the sealing groove (16).

6. The cylinder head cover for an engine according to claim 1, characterized in that: The mounting surface (12) is provided with a through hole (17), and a metal insert or a combination bolt is fixed in the through hole (17).

7. The cylinder head cover for an engine according to claim 6, characterized in that: The metal insert is embedded in the through hole (17), or is fixed in the through hole (17) by interference fit or bonding, and the combined bolt is fixed in the through hole (17) by interference fit or bonding.

8. The cylinder head cover for an engine according to claim 7, characterized in that: The number of the through holes (17) is specifically 11.

9. The cylinder head cover for an engine according to claim 1, characterized in that: The cylinder head cover also includes an oil return valve (5), the oil return valve (5) and the oil return hole (42) are fixedly connected, and a rubber gasket is provided between the oil return valve (5) and the oil return hole (42).

10. The cylinder head cover for an engine according to any one of claims 1 to 7, characterized in that: The housing (1), the box (3) and the cover plate (4) are all integrally formed by injection molding.

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