Air intake pipe able to increase intake of air and bendable freely for assembly

An air intake pipe able to increase intake of air and bendable freely for assembly includes an accelerating inner pipe, an air intake outer pipe and a flexible fit pipe. The accelerating inner pipe has one end connected with the air intake end of an engine, and the air intake outer pipe has one end connected with an air filter. The accelerating inner pipe and the air intake outer pipe respectively have the other end movably fitted with the flexible fit pipe. The diameter between the air intake outer pipe and the accelerating inner pipe is shrunk to increase the intake and pressure of air. The rotatable fit structure between the flexible fit pipe and the accelerating inner pipe and the air intake out pipe, and the flexibility of the flexible fit pipe enable the air intake pipe to be installed in various engine rooms of different automobiles.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to an air intake pipe, particularly to one having its opposite ends respectively connected between the air intake end of the engine of an automobile and an air filter, able to increase intake of air and bendable freely to be assembled.

2. Description of the Prior Art

Generally, the engine of an automobile is provided with an air inlet to suck in air for combustion or mixture vaporized gas, having an air filter assembled with the air inlet for filtering impurities in the air. The air filter is positioned in a closed space of the engine with inferior ventilation; therefore air sucked into the engine through the air filter is limited and the air filter is likely to suck in hot air produced in the engine, disadvantageous to the engine. To improve this defect, an engine has been made with its air inlet connected with an air intake pipe which has its front end connected with an air filter so as to suck in a comparatively large quantity of cool air to help the engine to operate and prevent the air filter from sucking in hot air from the engine.

A conventional air intake pipe10, as shown inFIG. 1, includes a pipe body11having one end formed with a large pipe and the other end formed with a small pipe. The large pipe and the small pipe of the pipe body11are respectively formed with a curved portion12with a pipe end13. An air filter20is fitted on the large pipe end13so that air can be sucked into the pipe body11through the large pipe end13and exhausted through the small pipe end13, able to increase the flowing speed of air.

However, the arrangement types of parts in the engine chamber of each automobile are different; therefore the conventional air intake pipe10, which is designed in a single type, can only be assembled in a specific automobile, but cannot be freely adjusted to match with various engine rooms of different automobiles. Even though the conventional air intake pipe10can be assembled in a common automobile, the air filter20always cannot exactly face the front of the automobile, thus lowering effect of air intake.

SUMMARY OF THE INVENTION

A first objective of the invention is to offer an air intake pipe able to increase intake of air and bendable freely for assembly. The air intake pipe includes an accelerating inner fit pipe, an air intake outer pipe and a flexible fit pipe. The rotatable fit structure between the flexible fit pipe and the accelerating inner fit pipe and the air intake outer pipe, and the bendable and contractile flexible fit pipe enable the air intake pipe to be freely adjusted and installed in various engine rooms of different automobiles, having extensive applicability.

A second objective of the invention is to offer an air intake pipe able to increase intake of air and bendable freely for assembly. The connected portion between the air intake outer pipe and the accelerating inner pipe is gradually shrunk so as to increase the flow and the pressure of air sucked into an engine through the air intake pipe to heighten horsepower of the engine.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

A preferred embodiment of an air intake pipe able to increase intake of air and bendable freely for assembly in the present invention, as shown inFIGS. 2,3and4, includes a flexible fit pipe31, an accelerating inner pipe32and an air intake outer pipe33.

The flexible fit pipe31made integral of rubber has its opposite openings respectively formed with a large and a small fit hollow311respectively having its outer circumferential edge shrunk inward and formed with a straight neck312, and between these two necks312are formed a plurality of projecting rings313spaced apart at a preset distance. The flexible fit pipe31is flexible, and the projecting rings313are contractile and bendable so they can be bent in any direction and extended partially. The necks312can be respectively fitted thereon with a snap ring314of a preset size.

The accelerating inner pipe32bent for about 90 degrees has its lower end inserted in the small fit hollow311of the flexible fit pipe31and secured with the neck312by means of the snap ring314.

The air intake outer pipe33bent for about 90 degrees and having a diameter a little larger than that of the accelerating inner pipe32has its upper end inserted in the large fit hollow311of the flexible fit pipe31and secured with the neck312by means of the snap ring314.

In assembling, as shown inFIG. 7, the air intake outer pipe33of the air intake pipe30has its lower end connected with an air filter40and the accelerating inner pipe32has its upper end connected with the air intake end60of an engine by a hard connecting pipe50, thus finishing assembly of the air intake pipe30. Since the parts arrangement in the engine room of each automobile are different, therefore, the air intake pipe30, before assembled, has to be adjusted so as to match with various inner spaces of the engines of different automobiles, and the air filter40on the air intake outer pipe33has to be adjusted to exactly face the front of an automobile. During assembling of the air intake pipe30, the flexible fit pipe31between the accelerating inner pipe32and the air intake outer pipe32can be bent freely in any direction or extended partially to let the air intake pipe30installed in the engine room of an automobile conveniently, positioning the air filter40precisely, facilitating assembly and having extensive applicability, as shown inFIG. 5 and 6.

In addition, the air intake pipe30has its air intake outer pipe33for med with a diameter larger than that of its accelerating inner pipe32, and the connected portion of these two pipes33,32is shrunk by gradually. Therefore, when air is sucked into the accelerating inner pipe32through the air intake outer pipe33, the pressure and flow of the air will increase, and the quantity and pressure of the air introduced into the engine room through the air intake end60will increase as well, able to elevate the operation horsepower of the engine.

A second preferred embodiment of an air intake pipe30able to increase intake of air and bendable freely for assembly in the present invention, as shown inFIG. 8, includes a flexible fit pipe31, an accelerating inner pipe32and an air intake outer pipe33, which are all the same as described in the first preferred embodiment, and a second flexible fit pipe31. The second flexible fit pipe31is fitted on the top end of the accelerating inner pipe32, which is to be connected with the air intake end60of the engine room, and the opposite fitting hollows311of the second flexible fit pipe31respectively formed with a same-sized diameter. Thus, the second flexible fit pipe31enables the air intake pipe30to be assembled with various types of engine rooms of different automobiles.

While the preferred embodiments of the invention have been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.