JPH04325761A - Air cleaner device for motorcycle - Google Patents

Abstract

PURPOSE:To improve the maintainability of an air cleaner disposed between the body frames of the double cradle frame of a motorcycle so as to improve the performance of the air cleaner. CONSTITUTION:The casing of an air cleaner 13 is formed of two member, that is, a case 14 fixed to body frames 5, 5 and a cap 16 for closing the rear opening face 15 of the case 14. A lock hole 19 is provided at either one of the lower end of the case 14 and that of the cap 16, and a lock claw 20 to be inserted into the lock hole 19 is provided at the other. A fastening piece 21 is provided at either one of the upper end of the cap 16 and that of the case 14. The rear opening face 15 of the case 14 is formed in such a way as to be inclined diagonally upward from the side view. A plate like filter 17 is held between the case 14 and the cap 16 to fix the lock hole 19 and the lock claw 20 engagedly, and the fastening piece 21 at the upper end is fastened to the other party by a screw 22 for closure.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner device for a motorcycle.

0003

2. Description of the Related Art In a motorcycle, a body frame in which the rear part of a main frame 4 extending behind a head pipe 3 for supporting a handlebar 1 and a front fork 2 is divided into two, as shown in FIG. 4, is used. There is a vehicle body with a double cradle frame configured as 5. In a motorcycle having this type of frame structure, an air cleaner 6 is arranged between the left and right body frames 5 which are divided into two,
A battery 7, which is a relatively large load for a two-wheeled vehicle, is arranged at the rear of the vehicle.

In this air cleaner 6, a cylindrical filter 9 is inserted from the rear of a box-shaped cleaner casing 8, as shown in the front view in FIG. 5 and in cross section in FIG. 4 screws 10,1
0... to be fixed to the cleaner casing 8. Then, the air flows from the inlet 11 as shown by the arrow, bends at a right angle at the filter 9, passes through this, bends at a right angle again, flows out from the outlet 12 of the cleaner casing 8 as purified air, and is sent to the carburetor. It is now possible to

[0005]

However, in the conventional structure described above, when replacing or cleaning the filter 9, the filter 9 must be removed unless the battery 7, which is attached to the body frame 5 at the rear of the air cleaner 6, is removed. 4, and the filter 9 is fixed.
Since the screws 10, 10, . . . of the book must be removed, this work is not easy, and there is a problem in that maintenance is extremely time-consuming. Also, air flows from the inlet 11 of the cleaner casing 8 through the filter 9 to the outlet 1.
Since the air is bent considerably before it flows out into the air, there is a problem in that the ventilation resistance becomes large.

The present invention was made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide an air cleaner device for a motorcycle that can improve the maintainability of the air cleaner and at the same time improve the performance of the air cleaner. shall be. [Structure of the invention]

[0007]

[Means for Solving the Problems] In order to solve the above-mentioned problems, an air cleaner device for a motorcycle according to the present invention has a double cradle frame, and an arrangement structure in which an air cleaner is arranged between the left and right body frames. In a two-wheeled motor vehicle with A lock hole is provided at either the lower end of the case or the lower end of the cap, and a lock claw inserted into the lock hole is provided at the other end, and either the upper end of the cap or the upper end of the case is provided. A fastening piece is provided in the case, and the rear opening surface of the case is inclined so as to face diagonally upward when viewed from the side, and a plate-shaped filter is sandwiched between the case and the cap, and the lock hole and the lock pawl are connected to each other. The upper end of the fastening piece is fastened to the other end with a screw to close it.

[0008]

[Operation] During maintenance, remove the screw, rotate the cap slightly backwards, and then pull it diagonally upwards to allow the lock pawl to come out of the lock hole and remove it upwards. At the same time, the filter is also removed, and after performing maintenance such as replacing and cleaning the filter, the lock claw and lock hole of the cap and case are engaged again to close the filter, and the retaining piece is secured with a screw. do it. Therefore, even if a battery or the like is disposed behind the air cleaner, filter replacement or the like can be performed without being hindered by this.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the air cleaner 13 includes a case 14 that is fixed between the left and right body frames 5 and has an open rear end, a cap 16 that closes a rear opening surface 15 of the case 14, and a cap 16 that closes the rear opening surface 15 of the case 14. and a plate-shaped filter 17 held between a cap 16 and a cap 16, and a rear opening surface 15 of the case 14 is formed to be inclined obliquely upward when viewed from the side.

As shown in FIG. 3, a protruding piece 18 protruding from the lower end of the opening surface 15 of the case 14 is provided with a lock hole 19 at a protruding position, and the lower end of the cap 16 is inserted into the lock hole 19. A lock claw 20 is provided to protrude downward. At the upper end of the cap 16, a fastening piece 21, which is placed along the top surface of the case 14, is protruded in the right angle direction so that it can be fastened to the case 14 with two screws 22.

A plate-shaped filter 17 is interposed between the mating surfaces of the case 14 and the cap 16. This filter 17 has a filter element 24 provided on a frame 23, and the cross-sectional shape of the outer periphery of this frame 23 is T.
The protrusions on the periphery of the frame body 23 are fitted into grooves 25 and 26 provided around the mating surfaces of the peripheries of the case 14 and the cap 16 so that the frame body 23 is held therebetween.

An air inlet 27 is opened in the cap 16, and an air outlet 28 is opened in the case 14.

Therefore, when performing maintenance such as replacing the filter 17, the screw 22 is removed, the cap 16 is rotated slightly backward, and then pulled upward, and the lock pawl 20 comes out of the lock hole 19 and moves upward. It can be extracted to. At the same time, since the filter 17 is exposed, the filter 17 can also be removed upward as shown in FIG. After cleaning the inside of the case 14 in this manner, a new filter 17 is placed in a predetermined position, and the lock claw 20 of the cap 16 is fitted into the lock hole 19 of the case 14 and rotated so as to be closed. 21 to the case 14 with screws 22, maintenance is completed.

Note that the lock claw 20 and the lock hole 19 may be provided on the case 14 and the lock hole 19 on the cap 16, and the fastening piece 21 may be provided on the case 14 instead of on the cap 16 side. It may also be provided on the side.

[0016]

[Effects of the Invention] As described above, according to the present invention, the cleaner casing is composed of two members, the case and the cap, and the case is fixed between the body frames, and the space between the rear opening surface and the cap is fixed. Since a plate-shaped filter is sandwiched between the air cleaner and the air cleaner, it can be pulled out by removing the top screw and rotating the cap slightly backwards during maintenance.This allows parts such as the battery to be placed at the rear of the air cleaner. Even if the air cleaner is installed, by providing a small gap between the air cleaner and the part, maintenance of the air cleaner can be performed without removing the part, and maintainability can be greatly improved. Also, during maintenance, all you have to do is turn the screw at the top, which makes it easy to insert tools, and the bottom part is fitted, making it even easier to maintain. Furthermore, since a plate-shaped filter is interposed between the case and the cap, the mounting direction is vertical, making it easier to install and remove the filter, and the air flow is linear, which reduces ventilation resistance and improves performance. can be improved.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view showing an embodiment of an air cleaner device for a motorcycle according to the present invention.

FIG. 2 is an exploded view of the air cleaner.

FIG. 3 is an enlarged perspective view of a lock hole and a lock claw.

FIG. 4 is a side view of a two-wheeled motor vehicle to which the present invention is applied.

FIG. 5 is a front view of a conventional air cleaner.

FIG. 6 is a longitudinal side view of FIG. 5;

[Explanation of symbols]

3 Head pipe 5 Body frame 7 Battery 13 Air cleaner 14 Case 15 Rear opening surface 16 Cap 17 Filter 19 Lock hole 20 Lock claw 21 Fastening piece 22 Screw

Claims (1)

[Claims] Claim 1: In a motorcycle having a double cradle frame and an arrangement structure in which an air cleaner is disposed between the left and right body frames, the air cleaner casing is separated into a case fixed to the body frame and a case fixed to the body frame. It is composed of two members, a cap that closes the rear opening surface, and a plate-shaped filter is interposed between the case and the cap, and a lock hole is provided at either the lower end of the case or the lower end of the cap, and the other is provided with a lock hole. In addition to providing a lock claw to be inserted into the lock hole, a fastening piece is provided on either the top end of the cap or the top end of the case, and the rear opening surface of the case is inclined so as to face diagonally upward when viewed from the side. A plate-shaped filter is sandwiched between the case and the cap, the lock hole and the lock pawl are engaged, and the fixing piece at the upper end is fixed to the other party with a screw to close the case. An air cleaner device for motorcycles featuring: