Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Reexamination Certificate
2000-09-01
2001-09-18
McMahon, Marguerite (Department: 3747)
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
Reexamination Certificate
active
06289866
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a structure of an intake pipe cover, and in particular to a structure of an intake pipe cover used on off-road type vehicles, such as all terrain vehicles (ATVs).
2. Background Art
An intake pipe of an ATV is liable to intake water, mud, snow, dust or the like (hereinafter, referred to as water, dust or the like) and accordingly, an inlet of the intake pipe is covered by an intake pipe cover. For example, there is disclosed in Japanese Patent Laid-Open No. 109194/1991, a structure in which an intake pipe cover in a box-like shape opened in an upward direction is provided on a lower side of a front cover. An inlet of an intake pipe is made to face an upper opening portion thereof and the upper opening portion of the intake pipe cover is covered by a front fender.
According to the above-described conventional example, the front cover which is an example of a functional part of a vehicle body is utilized as a portion of the intake pipe cover. Therefore, a reduction in a number of parts can be achieved. However, since the functional part of the vehicle body is utilized, in order to open an intake port of the intake pipe cover to a location at which water, dust or the like will unlikely enter the intake, a seal structure is required. This requirement of a seal significantly restricts the design layout of the intake pipe and the inlet.
SUMMARY OF THE INVENTION
In order to resolve the above-described deficiencies of the conventional art, according to a first aspect of the present invention, there is provided a structure of an intake pipe cover having an intake pipe cover for covering an immediate surrounding of an inlet of an intake pipe for introducing outside air into an air cleaner. The intake pipe cover includes a box shape member independent from functional parts of a vehicle body.
According to a second aspect of the present invention, there is provided the structure of an intake pipe cover according to the first aspect, where the inlet of the intake pipe is connected to a portion of the intake pipe cover, and an intake port of the intake pipe cover is opened at a position which is not opposed to the inlet.
According to a third aspect of the present invention, there is provided the structure of an intake pipe cover according to the second aspect, where the intake pipe cover is formed substantially in an L-like shape, the inlet of the intake pipe is connected to one chamber which is bent, and the intake port is opened to another chamber.
According to a fourth aspect of the present invention, there is provided the structure of an intake cover according to the first aspect, characterized in that a front end of a breather tube is connected to the intake pipe cover.
According to the first aspect of the present invention, the intake pipe cover is constituted by the box shape member independent from the functional parts of the vehicle body. Accordingly, no special seal is required between the intake pipe cover and the functional parts of the vehicle body. Furthermore, an opening position can arbitrarily be set to the configuration of the box shape member and the intake port to thereby constitute an optimum position at which invasion of water, dust or the like is most liable to be prevented. Accordingly, the layout of the intake pipe and the inlet is not restricted and the degree of design freedom can be enhanced.
According to the second aspect of the present invention, the inlet of the intake pipe connected to the intake pipe cover and the intake port of the intake pipe cover are not opposed to each other and therefore, there is no interference of intake. This results in uninhibited intake of air.
According to the third aspect of the present invention, when the intake pipe cover is formed substantially in the L-like shape, an arrangement in which the inlet of the intake pipe and the intake port of the intake pipe cover are not opposed to each other can easily be realized.
According to the fourth aspect of the present invention, when the front end of the breather tube is connected to the intake pipe cover, the breather tube can easily be connected in a manner with avoids the intake of water, dust or the like.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention are given by way of illustration only, since various changes and modifications within the sprit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 1434562 (1922-11-01), Quam
patent: 4366878 (1983-01-01), Warf
patent: 4434755 (1984-03-01), Kazuta et al.
patent: 5918576 (1999-07-01), Ohoka et al.
patent: 6092498 (2000-07-01), Lohr et al.
patent: 3-109194 A (1991-05-01), None
Inoue Masahiro
Karube Shinichi
Takahashi Shinji
Takeshima Masao
Tsuruta Yuichiro
Honda Giken Kogyo Kabushiki Kaisha
McMahon Marguerite
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