JP-2026074665-A - Air cleaner box, vehicle equipped with an air cleaner box, and method for connecting the duct of the air cleaner box.

JP2026074665AJP 2026074665 AJP2026074665 AJP 2026074665AJP-2026074665-A

Abstract

[Problem] To suppress variations in the amount of coating applied by the worker and to ensure an airtight connection between the air cleaner case and the duct. [Solution] The air cleaner box comprises an air cleaner case having an exhaust port and a duct connected to the exhaust port. The air cleaner case has a mounting surface portion having the exhaust port and a circumferential surface portion extending from the mounting surface portion to the inside of the air cleaner case so as to surround the periphery of the exhaust port. Adhesive is applied to the recess surrounded by the mounting surface portion and circumferential surface portion of the air cleaner case and the duct positioned at the exhaust port. [Selection Diagram] Figure 6

Inventors

山▲崎▼ 大
成岡翔平
赤木宏行
田中新一
溝口幸希

Assignees

カワサキモータース株式会社

Dates

Publication Date: 20260507
Application Date: 20241021

Claims (9)

It is an air cleaner box, An air cleaner case having an exhaust port, A duct connected to the exhaust port, It has, The air cleaner case has a mounting surface portion having the exhaust port, and a circumferential surface portion extending from the mounting surface portion to the inside of the air cleaner case so as to surround the periphery of the exhaust port. An adhesive is applied to the recess surrounded by the mounting surface and circumferential surface of the air cleaner case and the duct located at the exhaust port. Air cleaner box.
The duct has a cylindrical portion positioned at the exhaust port and a locking portion that engages with the air cleaner case. The air cleaner box according to claim 1.
The air cleaner case has a locking portion on the periphery of the exhaust port that extends from the mounting surface in a direction intersecting the mounting surface and is locked to the locking portion. The air cleaner box according to claim 2.
The air cleaner case has the mounting surface portion and the inner rib which is the circumferential surface portion extending from the mounting surface portion to the inside of the air cleaner case, Adhesive is applied to the inner surface of the mounting surface of the air cleaner case and to the inner recess surrounded by the inner rib and the duct. The air cleaner box according to claim 1.
The duct has a cylindrical portion that is inserted into the exhaust port of the air cleaner case, The air cleaner case has a mounting surface and an outer rib that extends from the mounting surface to the outside of the air cleaner case so as to surround the periphery of the exhaust port. Adhesive is applied to the outer surface of the mounting surface of the air cleaner case and to the outer recess surrounded by the outer rib and the duct. The air cleaner box according to claim 1.
The duct has a cylindrical portion that is inserted into the exhaust port of the air cleaner case, The air cleaner case has a mounting surface, an inner rib which is the circumferential surface extending inward from the mounting surface, and an outer rib which extends outward from the mounting surface so as to surround the exhaust port. Adhesive is applied to the inner surface of the mounting surface of the air cleaner case and to the inner recess surrounded by the inner rib and the duct. Adhesive is applied to the outer surface of the mounting surface of the air cleaner case and to the outer recess surrounded by the outer rib and the duct. The air cleaner case has a case-side positioning portion on the mounting surface for positioning the duct on the air cleaner case, The duct has a duct-side positioning portion that extends outward from the cylindrical portion and positions the duct in the air cleaner case, The case-side positioning portion and the duct-side positioning portion are located within the inner recess or the outer recess, The air cleaner box according to claim 1.
The duct has a cylindrical portion positioned at the exhaust port and a locking portion that engages with the air cleaner case. The air cleaner case has a locking portion on the peripheral edge of the exhaust port that extends from the mounting surface in a direction intersecting the mounting surface and is locked to the locking portion, The locking portion and the locked portion are located on the outside of the air cleaner case when the case-side positioning portion and the duct-side positioning portion are located within the inner recess, and on the inside of the air cleaner case when the case-side positioning portion and the duct-side positioning portion are located within the outer recess. The air cleaner box according to claim 6.
A vehicle equipped with the air cleaner box described in claim 1.
A method for connecting the duct to the air cleaner box, An air cleaner case having an exhaust port, comprising an air cleaner case having a mounting surface portion having the exhaust port and a circumferential surface portion extending from the mounting surface portion to the inside of the air cleaner case so as to surround the periphery of the exhaust port, and a duct connected to the exhaust port, The duct is placed in the exhaust port, The air cleaner case and the duct are connected by applying adhesive to the recess surrounded by the mounting surface and circumferential surface of the air cleaner case and the duct located at the exhaust port. How to connect the duct to the air cleaner box.

Description

This disclosure relates to an air cleaner box, a vehicle equipped with an air cleaner box, and a method for connecting the duct of an air cleaner box. In vehicles such as motorcycles, an air cleaner box equipped with an air filter is positioned in the intake passage for drawing air into the engine (see, for example, Patent Document 1). The air cleaner box is configured to purify the air introduced through the intake port of the air cleaner case using the air filter, and then discharge the purified air from the exhaust port of the air cleaner case toward the engine cylinder. Japanese Patent Publication No. 2010-71111 This is a schematic side view of a motorcycle equipped with an air cleaner box according to an embodiment of the present disclosure.This is a perspective view of the air cleaner box.This is a cross-sectional view of the air cleaner box.This is a top view of the lower case.This is a bottom view of a portion of the lower case.This is a magnified cross-sectional view of the connection point between the lower case and the duct.This is a diagram illustrating the connection method between the lower case and the duct.This diagram shows a modified air cleaner box.This diagram shows another modified version of the air cleaner box. The embodiments of this disclosure will be described below with reference to the attached drawings. Figure 1 is a schematic side view of a motorcycle equipped with an air cleaner box according to an embodiment of this disclosure. In this specification, "front," "rear," "left," and "right" refer to the forward, rear, left, and right directions as viewed from the perspective of the driver operating the motorcycle. The motorcycle 1 shown in Figure 1 is an example of a saddle-type vehicle. The motorcycle 1 comprises a front wheel 2 and a rear wheel 3, and a body frame 4 positioned between the front wheel 2 and the rear wheel 3. The body frame 4 includes a head pipe 5 extending approximately vertically and a main frame 6 extending rearward from the head pipe 5. The front wheel 2 is rotatably supported by a front fork 7 supported by the head pipe 5. The rear wheel 3 is rotatably supported by a swing arm 8 supported by the main frame 6. An engine E, acting as an internal combustion engine, is positioned between the front wheels 2 and the rear wheels 3. Engine E is, for example, a four-stroke parallel twin-cylinder engine with two cylinders 9 arranged side-by-side in the vehicle width direction. Power from engine E is transmitted to the rear wheels 3 via a power transmission mechanism, a chain 10. An air cleaner box 20 is positioned above the engine E. The air cleaner box 20 forms part of the intake passage for drawing air into the engine E and is connected to the engine E via the throttle body 11. The air cleaner box 20 is configured to purify the air introduced from the outside and to discharge the purified air back into the engine E, specifically towards the throttle body 11. A fuel tank 12, which stores fuel such as gasoline, is located above the air cleaner box 20. The fuel stored in the fuel tank 12 is supplied to the fuel injector 13. The fuel injector 13 is, for example, provided in the throttle body 11. The throttle body 11 is cylindrical and includes a throttle valve 11a that adjusts the amount of intake air drawn into the engine E. For example, a fuel injector 13 is positioned on the engine side of the throttle valve 11a within the throttle body 11. Fuel from the fuel injector 13 is supplied to the cylinder 9 of the engine E along with air. Figure 2 is a perspective view of the air cleaner box. Figure 3 is a cross-sectional view of the air cleaner box, showing the cross-section along the Y3-Y3 line in Figure 2. Figure 4 is a top view of the lower case, also showing a portion of the duct. Figure 5 is a bottom view of a portion of the lower case. Figure 6 is an enlarged cross-sectional view of the connection between the lower case and the duct, showing an enlarged portion of Figure 3. As shown in Figure 3, the air cleaner box 20 comprises an air filter 21, which serves as a filter element for purifying the air, and an air cleaner case 22 that houses the air filter 21. The air cleaner case 22 is box-shaped and has an air intake port 23 through which air is drawn in, and an exhaust port 24 through which air is discharged. The air cleaner case 22 is formed from a rigid material such as synthetic resin. As shown in Figures 2 and 3, the air cleaner case 22 has an upper case 31 positioned on the upper side and a lower case 32 positioned on the lower side. The upper case 31 and the lower case 32 can each be formed integrally. The upper case 31 is formed to bulge upwards, and the lower case 32 is formed to bulge downwards. The air cleaner case 22 is formed into a box shape by the upper case 31 being airtightly fixed to the lower case 32 using fastening members B. As shown in Figure 3, the air filter 21 is detachably mounted on the upper front of the lower case 32. The internal space S