Steel-aluminum mixed oil filling pipe

Abstract

The utility model relates to a steel-aluminum mixed oil filling pipe which comprises a steel reducer pipe and an aluminum elbow pipe, and one end of the reducer pipe and one end of the elbow pipe are fixed together. According to the invention, the reducer pipe, which is inconvenient to process, of the aluminum pipe is changed into steel, and then the reducer pipe and the aluminum pipe are fixed together, so that the weight of the product is greatly reduced, and the problem that the aluminum pipe is inconvenient to process independently is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a steel-aluminum mixed fuel pipe. BACKGROUND

[0002] Now the conventional fuel pipe is made of steel pipe, which leads to the weight of the fuel pipe is very large, not conducive to lightweight, for sports cars and other occasions require lightweight, not applicable.

[0003] Therefore, one of the easily thought of solutions is to replace the steel pipe with an aluminum pipe. Aluminum has low density, which can greatly reduce the weight, but there is a problem. The characteristics of aluminum make it impossible to expand the hole of the aluminum pipe. Since the section of the fuel pipe near the fuel port is a variable diameter hole, it cannot be achieved. SUMMARY

[0004] The purpose of the present application is to provide a steel-aluminum mixed fuel pipe, which greatly reduces the weight of the product and avoids the problem of inconvenient processing of aluminum pipes alone.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a steel-aluminum mixed fuel pipe, comprising a variable diameter pipe made of steel and an elbow pipe made of aluminum, and the variable diameter pipe and the elbow pipe are fixed together. In the present application, the variable diameter pipe which is inconvenient to process the aluminum pipe is changed to steel, and then the two are fixed together, which greatly reduces the weight of the product and avoids the problem of inconvenient processing of aluminum pipes alone.

[0006] As a preferred embodiment of the present application, the variable diameter pipe and the elbow pipe are sleeved together at one end, and the overlapping part of the variable diameter pipe and the elbow pipe is a polygon in cross section. Specifically, the elbow pipe is inserted into the outer circle of the variable diameter pipe, and a polygon-shaped mandrel is inserted into the overlapping part, and then placed into a punch, the overlapping part of the variable diameter pipe and the outer appearance are deformed by punching, and finally the mandrel is pulled out, which realizes the connection of the variable diameter pipe and the elbow pipe.

[0007] As a specific embodiment of the present application, the overlapping part of the variable diameter pipe and the elbow pipe is a regular hexagon in cross section.

[0008] As a preferred embodiment of the present application, the outer circle of the variable diameter pipe has a groove, and the groove has a sealing ring, and the sealing ring is in contact with the outer circle of the variable diameter pipe and the inner circle of the elbow pipe, respectively. After the variable diameter pipe and the elbow pipe are punched and connected, there may be some gaps. In order to avoid leakage, a sealing ring is added.

[0009] As a preferred embodiment of the present application, the other end of the variable diameter pipe is connected with an oil inlet.

[0010] As a preferred embodiment of the present application, the outer ring of the reducing pipe has a plurality of protrusions, and the end of the elbow pipe is connected with a connecting pipe by die casting, the connecting pipe is sleeved outside the reducing pipe, and the protrusions are embedded in the connecting pipe. In this way, leakage at the connection is almost impossible, but the mold requirement is high.

[0011] Compared with the prior art, the present application has the following advantages:

[0012] In the present application, the reducing pipe inconvenient to process with an aluminum pipe is changed into a steel pipe, and then the two are fixed together, which greatly reduces the weight of the product and avoids the problem of inconvenient processing of the aluminum pipe alone. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of embodiment 1 of the present application.

[0014] Figure 2 is a sectional view of embodiment 1.

[0015] Figure 3 is a schematic view of embodiment 3 of the present application.

[0016] Figure 4 is a sectional view of embodiment 4. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0018] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0019] Please refer to Figures 1-2 The present application provides a technical solution: embodiment 1, a steel-aluminum mixed oil filler pipe, comprising a steel reducing pipe 1 and an aluminum elbow pipe 2, one end of the reducing pipe 1 and the elbow pipe 2 are fixed together. The other end of the reducing pipe 1 is connected with an oil inlet 3. The reducing pipe inconvenient to process with an aluminum pipe is changed into a steel pipe, and then the two are fixed together, which greatly reduces the weight of the product and avoids the problem of inconvenient processing of the aluminum pipe alone.

[0020] The variable diameter pipe 1 and the elbow pipe 2 are sleeved at one end, and the cross section of the overlapping part of the variable diameter pipe 1 and the elbow pipe 2 is polygonal. In this embodiment, the cross section of the overlapping part of the variable diameter pipe 1 and the elbow pipe 2 is regular hexagonal.

[0021] The one end of the elbow pipe is inserted into the outer ring of the variable diameter pipe, and a polygonal shaped mandrel is inserted into the overlapping part, and then put into a punch, the overlapping part of the variable diameter pipe and the outer appearance are punched and deformed, and finally the mandrel is pulled out, thus realizing the connection of the variable diameter pipe and the elbow pipe.

[0022] The outer ring of the variable diameter pipe 1 has a groove 11, and the groove 11 has a sealing ring 12, which is in contact with the outer ring of the variable diameter pipe and the inner ring of the elbow pipe respectively. After the variable diameter pipe and the elbow pipe are connected by punching, there may be a gap, in order to avoid leakage, the sealing ring is added.

[0023] Embodiment 2, see Figures 3-4 The outer ring of the variable diameter pipe 1 has a plurality of protrusions 1a, and the end of the elbow pipe 2 is connected with a connecting pipe 2a by die casting, the connecting pipe 2a is sleeved outside the variable diameter pipe 1, and the protrusions 1a are embedded in the connecting pipe 2a. This connection by die casting is almost impossible to leak at the connection, but the mold requirement is very high.

Claims

1. A steel-aluminum hybrid refueling pipe, characterized in that: It includes a steel reducing pipe and an aluminum bend, with one end of the reducing pipe and the bend fixed together.

2. The steel-aluminum mixed refueling pipe according to claim 1, characterized in that: The reducing pipe and the bend are fitted together at one end, and the cross-section of the overlapping part of the reducing pipe and the bend is polygonal.

3. The steel-aluminum mixed refueling pipe according to claim 2, characterized in that: The cross-section of the overlapping portion of the reducing pipe and the bend is a regular hexagon.

4. The steel-aluminum mixed refueling pipe according to claim 3, characterized in that: The outer ring of the reducing pipe has a groove, and the groove has a sealing ring, which contacts the outer ring of the reducing pipe and the inner ring of the bend respectively.

5. The steel-aluminum mixed refueling pipe according to claim 4, characterized in that: The other end of the reducer is connected to an oil inlet.

6. The steel-aluminum mixed refueling pipe according to claim 1, characterized in that: The outer ring of the reducing pipe has several raised rings, and the end of the bent pipe is connected to a connecting pipe by die casting. The connecting pipe is sleeved on the outside of the reducing pipe, and the raised rings are embedded in the connecting pipe.

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