Fiber-reinforced thermoplastic cylinder head cover assembly for engine

Through the injection molding of the integrated cylinder head cover of a fiber-reinforced thermoplastic material, combined with rubber sealing gasket and shock absorbing gasket, the existing cylinder head cover has solved the problem of large weight and high cost, achieving easy molding, low cost and high sealing, and reducing noise pollution.

CN223293815UActive Publication Date: 2025-09-02BEIJING SINOMA COMPOSITE AUTO PARTS CO LTD
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Patent Information

Application Number
CN202422748390.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-09-02
Estimated Expiration
2034-11-12

AI Technical Summary

Technical Problem

The existing engine cylinder head cover design is large, costly, and the manufacturing process is complex, requiring multiple components to be assembled, resulting in increased mold design and manufacturing costs.

Method used

The cylinder head cover body is integrally molded with fiber-reinforced thermoplastic material, combined with rubber sealing gaskets and combined bolts, integrated shock absorbing gaskets, and reinforcement ribs are provided on the outside to reduce noise and improve impact resistance.

Benefits of technology

It realizes easy-to-form and low-cost cylinder head cover manufacturing, reduces the number of parts, reduces assembly complexity, improves sealing and wear resistance, and reduces noise pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model provides a fiber-reinforced thermoplastic cylinder head cover assembly for an engine. The fiber-reinforced thermoplastic cylinder head cover assembly comprises a cylinder head cover body, a rubber sealing gasket, a combined bolt and a shock pad, wherein the cylinder head cover body is specifically a rectangular cavity with an opening in one face, a mounting face is arranged on the opening face of the cylinder head cover body, the combined bolt and the shock pad are fixedly connected in an interference mode, and the rubber sealing gasket and the combined bolt are arranged in the mounting face. An ignition coil hole, an engine oil opening cover hole and an ignition coil fixing hole are formed in the top face of the cylinder head cover body, and the open face of the cylinder head cover body is opposite to the top face of the cylinder head cover body. The ignition coil fixing hole is formed in the periphery of the ignition coil hole, and the ignition coil hole and the ignition coil fixing hole are lower than the top surface of the body; the cylinder head cover body is integrally formed by injection molding of fiber reinforced thermoplastic materials. By applying the embodiment of the utility model, the structure is simple, the forming is easy, the assembly process is simple, and the design and manufacturing cost is low.
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Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a fiber-reinforced thermoplastic cylinder head cover component 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, keep the engine oil inside, and isolate 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 and are made of stamped steel. They are heavy and noisy. At the same time, steel plate stamping requires complex structures to be split into multiple parts and then assembled and connected. On the one hand, it requires high mold design and manufacturing costs. On the other hand, the assembly and molding of the product requires additional steps, and the manufacturing process cost is high.

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

[0005] The purpose of the present invention is to provide a method that is easy to form and low-cost to overcome the defects of the prior art. The specific technical solution is as follows:

[0006] A fiber reinforced thermoplastic cylinder head cover assembly for an engine, characterized in that it comprises a cylinder head cover body, a rubber sealing gasket, a combination bolt and a shock absorbing pad;

[0007] The cylinder head cover body is specifically a rectangular cavity with one side open, and a mounting surface is provided on the open side of the cylinder head cover body. The combination bolt and the shock-absorbing pad are fixedly connected by interference fit, and the rubber sealing pad and the combination bolt are arranged in the mounting surface.

[0008] The top surface of the cylinder head cover body is provided with an ignition coil hole, an oil port cover hole, and an ignition coil fixing hole, and an open side of the cylinder head cover body is opposite to the top surface of the cylinder head cover body;

[0009] The ignition coil fixing hole is arranged at the periphery of the ignition coil hole, and the ignition coil hole and the ignition coil fixing hole are lower than the top surface of the body, and an embedded part is arranged in the ignition coil fixing hole;

[0010] An oil filler cap is installed in the oil filler cap hole;

[0011] The cylinder head cover body is integrally formed by injection molding of fiber-reinforced thermoplastic material.

[0012] Optionally, the mounting surface has a sealing groove, and the rubber sealing gasket is installed in the sealing groove.

[0013] Optionally, a through hole is provided on the outside of the sealing groove, and the combination bolt and the shock-absorbing pad are fixed in the through hole.

[0014] Optionally, the combined bolt and the shock-absorbing pad are fixed in the through hole by interference fit.

[0015] Optionally, the number of the through holes is 21.

[0016] Optionally, the outer surface of the cylinder head cover body is provided with longitudinal reinforcement ribs and fence reinforcement ribs.

[0017] Optionally, the number of the ignition coil holes is 6, and the number of the ignition coil fixing holes is 12.

[0018] Optionally, a wiring harness installation hole is provided on the periphery of the oil port cover hole for installing a wiring harness.

[0019] Compared with the prior art, the cylinder head cover body of the fiber-reinforced thermoplastic cylinder head cover assembly for the engine of the present invention is formed by injection molding of fiber-reinforced thermoplastic material, which is simple to mold and has low manufacturing cost. The cylinder head cover body is integrated with the gasket and bolts, which reduces the vehicle assembly process and saves time; it reduces the development of spare parts and reduces costs. Rubber gaskets are used instead of paper-based gaskets, and the elasticity of rubber is used to ensure the airtightness between the shell and the cylinder body. Rubber has good wear resistance, and the rubber gasket can be recycled after the cylinder head cover is disassembled. Reinforcing ribs are provided on the outside of the cylinder head cover to ensure the impact resistance and high strength of the shell. By using shock-absorbing pads, noise pollution generated by the car during driving can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic top view of an embodiment of a fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the front and cross-sectional views of a fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided by the present invention;

[0023] Figure 3This is a schematic structural diagram of an embodiment of a fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided by the present invention.

[0024] in, Figures 1 to 3 The corresponding relationship between the component names and the corresponding reference numerals is as follows:

[0025] 1 cylinder head cover body, 11 mounting surface, 12 ignition coil hole, 13 oil port cover hole, 14 ignition coil fixing hole, 15 embedded part, 16 sealing groove, 17 through hole, 18 longitudinal reinforcement rib, 19 staggered reinforcement rib;

[0026] 2 rubber sealing gaskets;

[0027] 3 combination bolts;

[0028] 4 shock-absorbing pads;

[0029] 5. Oil cap. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that the directional words top and bottom, left and right in this embodiment are based on Figure 2 The positions of the illustrated embodiments of the cylinder head cover are defined by reference.

[0032] Please combine Figures 1 to 3 , Figure 1 This is a top view of an embodiment of a fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided by the present invention. Figure 2 This is a schematic diagram of the front and cross-sectional structure of a fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided by the utility model. Figure 3 This is a structural diagram of an embodiment of a fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided by the present invention. Figures 1 to 3 As shown, the fiber-reinforced thermoplastic cylinder head cover assembly for an engine provided in this embodiment includes a cylinder head cover body 1, a rubber sealing gasket 2, a combination bolt 3 and a shock-absorbing pad 4;

[0033] Among them, the cylinder head cover body 1 is specifically a rectangular cavity with one side open, and the open side of the cylinder head cover body 1 is provided with a mounting surface 11, the combination bolt 3 and the shock absorber pad 4 are fixedly connected by interference, the rubber sealing pad 2 and the combination bolt 3 are arranged in the mounting surface 11, and the top surface of the cylinder head cover body 1 is provided with an ignition coil hole 12, an oil port cover hole 13 and an ignition coil fixing hole 14, and the open side of the cylinder head cover body 1 is opposite to the top surface of the cylinder head cover body 1; the ignition coil fixing hole 14 is arranged on the periphery of the ignition coil hole 12, and the ignition coil hole 12 and the ignition coil fixing hole 14 are lower than the top surface of the body 1, and an embedded part 15 is provided in the ignition coil fixing hole 14; the oil port cover hole 13 is installed with an oil port cover 5.

[0034] It can be understood that the mounting surface 11 is the flange sealing surface at the bottom of the cylinder head cover body 1, that is, the mounting surface when connected to the engine; specifically, the ignition coil hole 12 and the ignition coil fixing hole 14 are lower than the top surface of the body 1 to reduce the impact wear of the oil seal after assembly. Figure 2 The cross-sectional structure of the ignition coil hole 12 is concave. Furthermore, the oil filler cap 13 is positioned lower than the top surface of the main body 1 to reduce the height of the oil filler cap 5 protruding from the top surface of the main body 1, thereby increasing the service life of the oil filler cap. Specifically, the embedded part 15 can be directly molded into the ignition coil fixing hole 14 during the injection molding of the cylinder head cover main body 1, or it can be fixed to the ignition coil fixing hole 14 by welding or bonding. In actual use, the ignition coil is fixedly connected to the cylinder head cover main body 1 via the embedded part 15.

[0035] Compared with the prior art, the cylinder head cover body of this embodiment is made of fiber-reinforced thermoplastic material by injection molding, which has a simple product structure, simple molding, low design and manufacturing costs. In addition, the shock-absorbing pad reduces noise pollution generated by the car during driving.

[0036] More specifically, to ensure the sealing properties of the fiber-reinforced thermoplastic cylinder head cover assembly for the engine, mounting surface 11 has a sealing groove 16 for mounting a rubber gasket 2. The elasticity of the rubber gasket 2 ensures a tight seal between the cylinder head cover body 1 and the engine. Furthermore, the excellent wear resistance of rubber allows the rubber gasket 2 to be reused after the cylinder head cover body 1 is removed.

[0037] Furthermore, in order to improve the overall installation strength of the fiber reinforced thermoplastic cylinder head cover assembly for the engine and reduce noise, a through hole 17 is provided outside the sealing groove 16 , and the combination bolt 3 and the shock-absorbing pad 4 are fixed in the through hole 17 .

[0038] Specifically, in order to ensure that the combination bolt 3 can be stably fixed in the through hole 17, the combination bolt 3 and the shock-absorbing pad 4 are fixed in the through hole 17 by interference fit. For example, after the combination bolt 3 and the shock-absorbing pad 4 are assembled by interference fit, the combined combination bolt 3 and the shock-absorbing pad 4 are fixed in the through hole 17 by interference fit. Alternatively, the combination bolt 3 can be fixed in the through hole 17 by a limiting structure. For example, a limiting structure can be provided in the through hole 17, or a limiting structure can be provided on the sleeve of the combination bolt 3 to fix the combination bolt 3 in the through hole 17. In actual application, the combination bolt 3 and the shock-absorbing pad 4 are first assembled by interference fit, and then the combined combination bolt 3 and the shock-absorbing pad 4 are fixed in the through hole 17 by the limiting structure; alternatively, the combination bolt 3 can also be fixed in the through hole 17 by bonding. Among them, the combination bolt 3 can be a bolt or metal insert assembly fixed as one.

[0039] like Figure 1 As shown, the number of through holes 17 may be 21. Seven through holes 17 and six through holes 17 are provided in the two long sides, respectively, and three through holes 17 and five through holes 17 are provided in the two short sides, respectively.

[0040] Furthermore, to increase the strength of the main body 1, longitudinal reinforcing ribs 18 are provided on the outer surface of the cylinder head cover body 1. These ribs are specifically longitudinally distributed triangular ribs, 2 mm thick, and 10-30 mm apart. Fence reinforcing ribs 19 are also provided on the outer surface of the cylinder head cover body 1. These ribs are specifically formed by the alternating longitudinal, transverse, and diagonal reinforcements. These ribs further enhance the strength of the fiber-reinforced thermoplastic cylinder head cover assembly for the engine.

[0041] The longitudinal reinforcement ribs 18 and the fence reinforcement ribs 19 can not only increase the strength and rigidity of the product, but also solve the noise problem of the fiber-reinforced thermoplastic cylinder head cover assembly for metal engines during driving and solve the problem of product impact resistance.

[0042] join Figure 1 In this embodiment, there are six ignition coil holes 12. Two ignition coil fixing holes 14 are disposed around each ignition coil hole 12, for a total of twelve ignition coil fixing holes 14. One embedded component 15 is disposed within each ignition coil fixing hole 14, for a total of twelve embedded components 15. Specifically, two ignition coils 14 are disposed around each ignition coil hole 12, and the two ignition coils 14 are symmetrically disposed around the periphery of the ignition coil hole 12, i.e., the two ignition coils 14 are symmetrically disposed about the central axis of the ignition coil hole 12.

[0043] Specifically, in order to facilitate the installation of the wiring harness, a wiring harness installation hole is provided on the periphery of the oil port cover 13, and a wiring harness embedded part is provided in the wiring harness installation hole. The wiring harness and the body 1 are fixedly connected through the wiring harness embedded part.

[0044] In this embodiment, the cylinder head cover body is formed by injection molding of a fiber-reinforced thermoplastic material, which is simple to mold and has low manufacturing costs. The cylinder head cover body is integrated with the gasket and bolts, which reduces the assembly process of the entire vehicle and saves time; it reduces the development of spare parts and reduces costs. Rubber gaskets are used instead of paper-based gaskets. The elasticity of rubber is used to ensure the airtightness between the shell and the cylinder body, and rubber has good wear resistance. The rubber gasket can be recycled after the cylinder head cover is disassembled. Reinforcing ribs are provided on the outside of the cylinder head cover to ensure the impact resistance and high strength of the shell. The design of the reinforcing ribs ensures the impact resistance and high strength of the product. By using shock-absorbing pads, the noise pollution generated by the car during driving can be reduced.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A fiber reinforced thermoplastic cylinder head cover assembly for an engine, characterized in that: The fiber-reinforced thermoplastic cylinder head cover assembly for an engine comprises a cylinder head cover body (1), a rubber sealing gasket (2), a combination bolt (3) and a shock-absorbing pad (4); The cylinder head cover body (1) is specifically a rectangular cavity with one side open, and a mounting surface (11) is provided on the open side of the cylinder head cover body (1). The combination bolt (3) and the shock-absorbing pad (4) are fixedly connected by interference fit, and the rubber sealing pad (2) and the combination bolt (3) are arranged in the mounting surface (11); The top surface of the cylinder head cover body (1) is provided with an ignition coil hole (12), an oil port cover hole (13), and an ignition coil fixing hole (14), and the open side of the cylinder head cover body (1) is opposite to the top surface of the cylinder head cover body (1); The ignition coil fixing hole (14) is arranged on the periphery of the ignition coil hole (12), and the ignition coil hole (12) and the ignition coil fixing hole (14) are lower than the top surface of the body (1), and an embedded part (15) is arranged in the ignition coil fixing hole (14); An oil port cover (5) is installed in the oil port cover hole (13); The cylinder head cover body (1) is integrally formed by injection molding of a fiber-reinforced thermoplastic material.

2. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 1, characterized in that: The mounting surface (11) has a sealing groove (16), and the rubber sealing pad (2) is mounted in the sealing groove (16).

3. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 2, characterized in that: A through hole (17) is provided on the outside of the sealing groove (16), and the combined bolt (3) and the shock-absorbing pad (4) are fixed in the through hole (17).

4. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 3, characterized in that: The combined bolt (3) and the shock-absorbing pad (4) are fixed in the through hole (17) by interference fit.

5. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 4, characterized in that: The number of the through holes (17) is specifically 21.

6. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 5, characterized in that: The outer surface of the cylinder head cover body (1) is provided with longitudinal reinforcement ribs (18) and fence reinforcement ribs (19).

7. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 6, characterized in that: The number of the ignition coil holes (12) is specifically 6, and the number of the ignition coil fixing holes (14) is specifically 12.

8. The fiber-reinforced thermoplastic cylinder head cover assembly for an engine according to claim 7, characterized in that: A wiring harness installation hole is provided on the periphery of the oil port cover hole (13) for installing the wiring harness.