Oil filling pipe for engine cylinder head cover

Abstract

The embodiment of the utility model provides an oil filling pipe for an engine cylinder head cover. The oil filling pipe comprises an oil filling pipe lower piece, an oil filling pipe upper piece, an engine oil opening cover and a sealing ring. The cross section of the oil filling pipe lower part is in an inverted-L shape, one end of the oil filling pipe lower part is detachably connected with an engine cylinder head cover, the other end of the oil filling pipe lower part is fixedly connected with the lower end of the oil filling pipe upper part to form a communicating pipe with an inverted-L-shaped cross section, and the upper end of the oil filling pipe upper part is detachably connected with the engine oil opening cover. The sealing ring is assembled at one end of the oil filling pipe lower part so as to ensure the sealing performance of connection between the oil filling pipe for the engine cylinder head cover and the engine cylinder head cover; wherein the oil filling pipe lower part, the oil filling pipe upper part and the engine oil opening cover are all made of fiber reinforced thermoplastic composite materials in an injection molding mode. According to the oil filling pipe, the weight and the cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a filler hose for an engine cylinder head cover. Background Technology

[0002] The engine refueling hose is a core component of the fuel filling system and a key subsystem integrating functions such as fluid transmission, safety protection, environmental control, and human-machine interaction.

[0003] Currently, most engine filler hoses are made of rubber and metal. Metal filler hoses are cheaper but heavier, while rubber filler hoses are more expensive.

[0004] Therefore, there is a need to provide a lightweight and low-cost refueling hose to solve the problems in the prior art. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a lightweight and low-cost fuel filler pipe for engine cylinder head covers, overcoming the shortcomings of the prior art. The specific technical solution is as follows:

[0006] An oil filler pipe for an engine cylinder head cover includes a lower oil filler pipe component, an upper oil filler pipe component, an oil port cap, and a sealing ring.

[0007] The lower part of the fuel filler pipe has a cross-sectional shape of "┐". One end of the lower part is detachably connected to the engine cylinder head cover, and the other end is fixedly connected to the lower end of the upper part of the fuel filler pipe, forming a cross-sectional shape of... The upper end of the filler pipe is detachably connected to the oil filler cap, and one end of the filler pipe is fitted with the sealing ring to ensure the sealing of the connection between the filler pipe and the engine cylinder head cover.

[0008] The lower part of the refueling pipe, the upper part of the refueling pipe, and the oil filler cap are all injection molded from fiber-reinforced thermoplastic composite materials.

[0009] Optionally, the lower part of the refueling pipe is provided with a mounting hole, and a metal insert is fixed in the mounting hole.

[0010] Optionally, the other end of the lower part of the refueling pipe is fixedly connected to the lower end of the upper part of the refueling pipe by welding or bonding.

[0011] Optionally, the upper part of the refueling pipe is provided with positioning ribs to enhance the strength of the upper part of the refueling pipe and to mark the fixed connection position of the upper part of the refueling pipe and the lower part of the refueling pipe.

[0012] Optionally, the lower part of the refueling pipe is provided with reinforcing ribs to enhance its strength.

[0013] Optionally, the metal insert is embedded in the mounting hole, or fixed in the mounting hole by interference fit or adhesive bonding.

[0014] Compared with existing technologies, the fuel filler pipe for the engine cylinder head cover of this utility model has a simple structure, is easy to form, has low design and manufacturing costs, and is easy to assemble. It is made of fiber-reinforced thermoplastic composite material, which reduces the weight of the fuel filler pipe and further reduces costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the refueling pipe provided by this utility model;

[0017] Figure 2 This is a top view structural diagram of an embodiment of the refueling pipe provided by this utility model.

[0018] in, Figures 1 to 2 The correspondence between the component names and their corresponding reference numerals in the figures is as follows:

[0019] 1. Fuel pipe lower part; 11. Mounting hole; 12. Reinforcing rib;

[0020] 2. Fuel pipe upper part, 21. Positioning rib;

[0021] 3. Oil filler cap;

[0022] 4. Sealing rings. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that in this embodiment, "up" and "down" refer to the orientation. Figure 1 The position of the refueling pipe in the illustrated embodiment is defined based on a reference.

[0025] Please combine Figures 1 to 2 , Figure 1This is a three-dimensional structural schematic diagram of an embodiment of the refueling pipe provided by this utility model; Figure 2 This is a top view structural diagram of an embodiment of the refueling pipe provided by this utility model. Figures 1 to 2 As shown, the oil filler pipe for the engine cylinder head cover provided in this embodiment includes a lower oil filler pipe part 1, an upper oil filler pipe part 2, an oil port cap 3, and a sealing ring 4;

[0026] The lower part of the fuel filler pipe 1 has a cross-sectional shape of "┐". One end of the lower part of the fuel filler pipe 1 is detachably connected to the engine cylinder head cover, and the other end of the lower part of the lower part of the fuel filler pipe 2 is fixedly connected to the lower end of the upper part of the fuel filler pipe 2, forming a cross-sectional shape of... The upper end of the filler pipe 2 and the oil filler cap 3 are detachably connected. One end of the filler pipe 1 is equipped with a sealing ring 4 to ensure the sealing of the connection between the filler pipe and the engine cylinder head cover.

[0027] Among them, the lower part of the fuel filler pipe 1, the upper part of the fuel filler pipe 2, and the oil filler cap 3 are all injection molded from fiber-reinforced thermoplastic composite materials.

[0028] It is understandable that both the lower part 1 and the upper part 2 of the refueling pipe are circular pipes.

[0029] In practical applications, after fixing the other end of the lower part 1 of the filler pipe to the lower end of the upper part 2 of the filler pipe, one end of the lower part 1 of the filler pipe is connected to the engine cylinder head cover. Then, filler is added through the upper end of the upper part 2 of the filler pipe. After filling, the oil filler cap 3 is connected to the upper end of the upper part 2 of the filler pipe to prevent oil from splashing out and to prevent dust and impurities from entering the filler pipe.

[0030] Compared with existing technologies, the fuel filler pipe for the engine cylinder head cover of this utility model has a simple structure, is easy to form, has low design and manufacturing costs, and is easy to assemble. The lower part 1 of the fuel filler pipe, the upper part 2 of the fuel filler pipe, and the oil filler cap 3 are all made of fiber-reinforced thermoplastic composite material, which reduces the weight of the fuel filler pipe and further reduces costs.

[0031] Optionally, to improve the installation strength of the refueling pipe in this embodiment, a mounting hole 11 is provided on the lower part 1 of the refueling pipe, and a metal insert is fixed in the mounting hole 11. Figure 2 In this embodiment, a mounting hole 11 is provided on the side of the lower part 1 of the refueling pipe.

[0032] Specifically, in order to ensure that the metal insert can be stably fixed in the mounting hole 11, the metal insert can be embedded in the mounting hole 11, or fixed in the mounting hole 11 by interference fit or bonding.

[0033] During injection molding, the metal insert can be pre-placed on the mold at the corresponding mounting hole 11 position, so that it can be directly embedded in the mounting hole 11 during injection molding. Then, the fuel pipe is bolted to the engine through the mounting hole 11, and the embedded metal insert ensures the connection strength.

[0034] Specifically, the other end of the lower part 1 of the refueling pipe can be fixedly connected to the lower end of the upper part 2 of the refueling pipe by welding or bonding. For example, the other end of the lower part 1 of the refueling pipe can be provided with a welding rib, and the lower end of the upper part 2 of the refueling pipe can be designed with a welding surface. The welding rib of the lower part 1 of the refueling pipe and the welding surface of the upper part 2 of the refueling pipe are fixedly connected by welding.

[0035] Optionally, in order to quickly locate the fixed connection position of the upper part 2 of the refueling pipe and the lower part 1 of the refueling pipe, a positioning rib 21 can be provided on the upper part 2 of the refueling pipe to mark the fixed connection position and to enhance the strength of the upper part 2 of the refueling pipe.

[0036] Specifically, in order to further improve the strength of the refueling pipe, a reinforcing rib 12 can be provided on the lower part 1 of the refueling pipe to enhance the strength of the lower part 1 of the refueling pipe, thereby enhancing the strength of the refueling pipe.

[0037] Because the lower part 1, upper part 2, and oil filler cap 3 are injection molded separately, and their simple structure facilitates assembly, the overall design and manufacturing costs are low. The upper part 2 and the lower part 1 are fixedly connected by welding or bonding, ensuring high stability of the fuel filler pipe. A sealing ring ensures the airtightness between the fuel filler pipe and the engine cylinder head cover. The use of fiber-reinforced thermoplastic composite materials reduces the weight and cost of the fuel filler pipe. The reinforcing rib design ensures the impact resistance and high strength of the fuel filler pipe.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A filler hose for an engine cylinder head cover, characterized in that, It includes the lower part of the filler pipe (1), the upper part of the filler pipe (2), the oil filler cap (3), and the sealing ring (4); The lower part of the fuel filler pipe (1) has a cross-sectional shape of "┐". One end of the lower part of the fuel filler pipe (1) is detachably connected to the engine cylinder head cover, and the other end of the lower part of the lower part of the fuel filler pipe (1) is fixedly connected to the lower end of the upper part of the fuel filler pipe (2), forming a cross-sectional shape of... The upper end of the upper part (2) of the oil filler pipe is detachably connected to the oil port cap (3), and one end of the lower part (1) of the oil filler pipe is equipped with the sealing ring (4) to ensure the sealing of the connection between the oil filler pipe and the engine cylinder head cover. The lower part of the refueling pipe (1), the upper part of the refueling pipe (2), and the oil filler cap (3) are all injection molded from fiber-reinforced thermoplastic composite materials.

2. The fuel filler pipe for an engine cylinder head cover according to claim 1, characterized in that, The lower part (1) of the refueling pipe is provided with a mounting hole (11), and a metal insert is fixed in the mounting hole (11).

3. The fuel filler pipe for an engine cylinder head cover according to claim 2, characterized in that, The other end of the lower part (1) of the refueling pipe is fixedly connected to the lower end of the upper part (2) of the refueling pipe by welding or bonding.

4. The fuel filler pipe for an engine cylinder head cover according to claim 3, characterized in that, The upper part (2) of the refueling pipe is provided with a positioning rib (21) to enhance the strength of the upper part (2) of the refueling pipe and to mark the fixed connection position of the upper part (2) of the refueling pipe and the lower part (1) of the refueling pipe.

5. The fuel filler pipe for an engine cylinder head cover according to claim 4, characterized in that, The lower part of the refueling pipe (1) is provided with reinforcing ribs (12) to enhance the strength of the lower part of the refueling pipe (1).

6. The fuel filler pipe for an engine cylinder head cover according to claim 2, characterized in that, The metal insert is embedded in the mounting hole (11), or fixed in the mounting hole (11) by interference fit or adhesive bonding.

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