JPS641195Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air cleaner mounting structure for a motorcycle.

In the case of motorcycles equipped with so-called V-arranged engines in which the cylinders are arranged in a V-shape, it is difficult to arrange the intake system, and conventionally, 3 to 4 tightening stays are put out from the frame body and air cleaners are attached to these stays. It had a structure with a . However, such a mounting structure has the disadvantage that it has a large number of parts and a complicated structure, resulting in poor assembly workability and high cost.

An object of the present invention is to provide an air cleaner mounting structure that uses a frame pipe as a mounting stay to reduce costs and improve assembly workability.

The air cleaner mounting structure according to the present invention is such that the air cleaner is installed in a space surrounded by a head pipe, a pair of upper main pipes, and a pair of lower main pipes, and is installed between the pair of lower main pipes at a predetermined distance from each other. A pair of cross pipes are used as mounting stays, and the air cleaner is provided with a hook member that can be engaged with one of the pair of cross pipes and a fixing part that is fixed to the other one by a fixing means. There is.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic side view showing a power generation device for a motorcycle according to the present invention. In the figure, 1 is a head pipe, 2 is a left and right upper main pipe, 3 is a left and right lower main pipe, and 4 is a left and right rear pipe, and these pipes constitute the frame of the vehicle body. The lower main pipe 3 has a rectangular shape, and both ends thereof are connected to the rear pipe 4 by a gazette 5. A V-arranged engine 8 in which cylinders 6 and 7 are arranged in a V-shape is mounted at the bottom of the lower main pipe 3.

Reference numerals 9 and 10 indicate carburetors that supply mixed gas to the cylinders 6 and 7, respectively, and are connected to a resonance chamber (expansion chamber) 11. Reference numeral 12 denotes an air cleaner for supplying air to the resonance chamber 11, and is arranged in a space surrounded by the aforementioned head pipe 1, left and right upper main pipes 2, and left and right lower main pipes 3. The fuel tank 13 carried on the left and right upper main pipes 2 is rotatably supported by a support member 14 at its rear end with respect to the vehicle body. An auxiliary tank 16 is attached to this fuel tank 13 via a flexible tube 15.

FIG. 2 is a side sectional view showing the air cleaner section in FIG. 1, and FIG. 3 is a plan view thereof including a partial cross section. In FIGS. 2 and 3, a pair of cross pipes 17 and 18 are installed at a predetermined distance between the left and right lower main pipes 3, and the cross pipe 17 has a recess formed in the longitudinal direction on its upper surface. have Air cleaner 1
2 uses a pair of cross pipes 17 and 18 as a mounting stay, and a pair of hook members 19, which can be engaged with the cross pipe 17 for mounting.
20 at the bottom and is provided with a fixing part 21 to be fixed to the cross pipe 18 by a fixing means such as a screw.

The intake pipe 23 of the air cleaner 12 is located behind the head pipe 1 and is bent as shown in the figure, with its intake port facing downward. Air cleaner 1
A rectifying member 24, which is approximately V-shaped when viewed from the axial direction, is provided in the vicinity of the inlet of the element 25. 24 distributes the air introduced through the intake pipe 23 almost evenly in order to effectively utilize the entirety of an elliptical element (filter paper) 25 provided close to the rear thereof. The air that has passed through the element 25 is supplied from the outlet of the air cleaner 12 via the cone tube 26 to the resonance chamber 11 described above.

As shown in a perspective view in FIG. 4, the cone tube 26 has a substantially truncated cone shape, and both ends fit into the air cleaner 12 and the resonance chamber 11, respectively, and are connected to each other so as not to separate. It is tightened and fixed with a band 27 and screws 28. Guide grooves 29 are formed at both ends of the cone tube 26 in order to keep the tightening position of the connecting band 27 constant. This guide groove 29 consists of a portion 29A having a groove width approximately equal to or wider than the width d ₁ of the tightening portion 27A of the connecting band 27, and a portion 29B having a groove width approximately equal to the width d ₂ of the band portion 27B. The connecting band 27 is tightened with the axial center of the connecting band 27 always aligned with the axis of the cone tube 26.

As detailed above, according to the present invention, since the pair of cross pipes installed on the left and right lower main pipes are used as mounting stays, the number of parts can be reduced and costs can be reduced. It is only necessary to engage the attached hook member with one of the pipes and tighten and fix it using only one fixing point at the rear, so installation is very simple and the number of assembly steps can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a power generation device for a motorcycle according to the present invention, FIG. 2 is a side sectional view showing the air cleaner section in FIG. 1, and FIG. 3 is a plan view including a partial cross section thereof. FIG. 4 is a perspective view showing the cone tube in FIG. 2. Explanation of symbols of main parts, 1...Head pipe,
2... Upper main pipe, 3... Lower main pipe, 6, 7... Cylinder, 8... Engine, 1
1... Resonance chamber, 12... Air cleaner, 13... Fuel tank, 17, 18... Cross pipe, 19, 20... Hook member, 21...
... Fixed part, 24 ... Rectifying member, 25 ... Element.

Claims (1)

[Scope of utility model registration request] An air cleaner is provided in a space surrounded by a head pipe, a pair of upper main pipes connected to the head pipe and carrying a fuel tank, and a pair of lower main pipes connected to the head pipe and the upper main pipe. a pair of cross pipes installed at a predetermined distance from each other on the lower main pipe of the air cleaner, a hook member attached to the air cleaner so as to be able to engage with one of the pair of cross pipes, and the other of the pair of cross pipes. 1. An air cleaner mounting structure comprising: a fixing part provided on the air cleaner to be fixed to the air cleaner; and fixing means fixing the fixing part to the other of the pair of cross pipes.