JP2003336555A - Attaching/detaching structure for cleaner element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaner element detaching structure capable of improving replacement workability and maintenance performance by enabling a cleaner element attached and detached easily in short time. <P>SOLUTION: In this attaching/detaching structure for a cleaner element 15, a bolt member inserted to the cleaner element 15 is screwed to a nut member provided on a counter part for detachably installing the cleaner element 15 to a cab joint (the counter part) 14. The bolt member and the nut member are composed of quick fasteners 22. By thus employing a method with the quick fasteners for attaching/detaching the cleaner element 15 instead of a conventional screwing method with a thumbscrew, the cleaner element 15 can be attached or detached easily in a short time, thereby replacement workability and maintenance performance can be improved. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaner element attaching / detaching structure for detachably attaching a cleaner element to another component. 2. Description of the Related Art FIG. 10 shows an example of the structure of an intake system of a motorcycle having a carburetor.
Is a cab joint for connecting a carburetor (not shown) and the cleaner case 102, and a cleaner element 115 is provided in the cleaner case 102.
It is attached detachably. [0003] Here, the structure for attaching and detaching the cleaner element 115 to and from the cleaner case 102 will be described. As shown in FIG.
A sleeve 124 is inserted and fixed to the center of the.
A boss portion 116a is integrally formed at the center of the backup member 116 fixed to the inner surface of the cleaner case 102, and an insert nut 119 is fixed to the boss portion 116a. When the cleaner element 115 is attached to the cleaner case 102, the end fitting portion 124a of the sleeve 124 inserted and fixed to the cleaner element 115 is attached to the boss portion 11 of the backup member 116.
6a so as to cover the cleaner element 1a.
15 is positioned, then the thumbscrew 122 is attached to the sleeve 124.
Through the insert nut 11 secured to the boss 116a of the backup member
9, turning the thumbscrew 122 and screwing it into the insert nut 119. The attached cleaner element 1
15 can be removed from the cab joint 114 by turning the thumbscrew 122 in the reverse direction to remove it from the insert nut 124, removing the thumbscrew 122 from the sleeve 124, and then removing the entire cleaner element 115. Just pull it out and remove it. However, in the above-mentioned conventional structure for attaching and detaching the cleaner element 115, the operation of turning the thumbscrew 122 a plurality of times is required for attaching and detaching the cleaner element 115.
It is not possible to easily attach / detach the cleaner element in a short time, and there is room for improvement in the operability and maintenance of the cleaner element 115. Particularly in off-road motorcycles, the maintenance frequency of the cleaner element is high, and in the competition motorcycles, maintenance is required for each race or heat race, and it is necessary to easily attach and detach the cleaner element in a short time. High in nature. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a cleaner element which can easily replace and install a cleaner element in a short time, thereby improving replacement workability and maintainability. An object of the present invention is to provide a detachable structure. [0008] In order to achieve the above object, the present invention provides a method of connecting a cleaner element to another component by screwing a bolt member inserted through the cleaner element to a nut member provided on the other component. The bolt member and the nut member are constituted by quick fasteners in a detachable structure of the cleaner element detachably attached to the cleaner element. Therefore, according to the present invention, the attachment / detachment of the cleaner element is changed from the conventional screw-in type using the thumb screw to the quick fastener type, so that the attachment / detachment of the cleaner element can be performed simply and quickly with one touch.
Thereby, replacement workability and maintainability can be improved. Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of a cleaner case portion of a motorcycle having the structure of the present invention, FIG. 2 is an enlarged sectional view taken along line AA of FIG. 1, and FIG. 3 is an enlarged sectional view taken along line BB of FIG. 4 is a cutaway side view showing the structure for attaching and detaching the cleaner element according to the present invention, and FIG. 5 is an exploded sectional view showing a cab joint and a part of the cleaner element showing the structure for attaching and detaching the cleaner element according to the present invention. 7 is a configuration diagram of the quick fastener. As shown in FIG. 1, a seat 1 for a motorcycle is provided.
A cleaner case 2 made of resin is disposed below the upper surface, and the upper surface, both side surfaces, and the rear surface of the cleaner case 2 are open. The upper opening of the cleaner case 2 is covered with the sheet 1, the both side openings are covered with left and right side covers 3 made of resin, and the rear opening is covered with a rear fender 4 also made of resin. As shown in FIG. 2, each of the side covers 3 has a front portion attached to a side portion of the cleaner case 2 by bolts 5 and a rear portion provided by bolts 6 as shown in FIG. 9 attached. Further, as shown in FIG.
And both sides of the rear fender 4 (only one is shown in FIG. 3) are attached to left and right seat rails 9 via brackets 8 with bolts 1.
0 and nut 11. FIG.
In the figure, reference numeral 12 denotes an exhaust pipe for guiding exhaust gas from an engine (not shown) backward, and an exhaust muffler 13 is connected to a rear end thereof. The motorcycle according to the present embodiment has a carburetor (not shown) in an intake system, and the carburetor and the cleaner case 2 are connected by a cab joint 14 shown in FIGS. The cleaner element 15 housed in the cleaner case 2 is attached to and detached from the cab joint 14 by the attachment / detachment structure according to the present invention. The cab joint 14 is integrally formed of an elastic material such as rubber, and has one end 14A constituting a large-diameter substantially cylindrical portion and the other end 14B constituting a small-diameter cylindrical portion. , 14B constitute a duct portion having a substantially rectangular cross section. The cab joint 14 has one end 14A attached to the cleaner case 2 and the other end 14B connected to a carburetor (not shown). Here, an assembly structure of the cab joint 14 to the cleaner case 2 will be described. The cab joint 14 is connected to the cleaner case 2
In order to assemble the cab joint, first, the cab joint 14 is deformed and one end 14A is pushed into the inside of the cleaner case 2 through the opening, and as shown in FIG. And press it against the inside. Then, a plurality of insert bolts 17 provided on the ring-shaped resin backup member 16 are passed through a plurality of circular holes (not shown) formed in the flange portion of the one end 14A of the cab joint 14 and the cleaner case 2,
The backup member 116 is pressed against the flange portion at one end 14A of the cab joint 14 from inside the cleaner case 2. Thereafter, a nut 18 is screwed into an end of the backup member 16 of the insert bolt 17 projecting out of the cleaner case 2 and tightened, whereby the cab joint 14 is assembled to the cleaner case 2. As described above, the cleaner element 15 is attached to and detached from the cab joint 14 assembled to the cleaner case 2 by the detaching structure according to the present invention. A description will be given based on FIG. As shown in FIGS. 4 and 5, a boss 16a is integrally formed at the center of the backup member 16, and inside the boss 16a, as shown in detail in FIG. A ring-shaped metal plate 19 constituting a quick fastener (female) and a case 20 for movably holding the metal plate 19 are incorporated. At the upper and lower two locations on the inner periphery of the case 20, there are formed grooves 20a which are long in the axial direction (left and right directions in FIG. 6). The projecting rectangular projections 19a are engaged with each other, and the plate 19 is held movably in the axial direction within a range in which the projections 19a can move in the groove 20a. A rectangular projection 19b is integrally formed at the upper and lower two locations on the inner periphery of the plate 19, and the plate 19 is constantly urged in one direction by a spring 21 compressed in a case 20. I have. The other quick fastener (male) 22 is screwed to the plate 19, and the quick fastener 22 is screwed to one end of a long round bar-shaped shaft 23 as shown in detail in FIG. A portion 23A is formed, and a ring-shaped knob 23B is attached to the other end. Here, a spiral groove 23a is formed on the screw portion 23A by １ ／ of the entire circumference.
The groove 23a is formed slightly, and a circular engagement groove 23b is formed at the end of the groove 23a. On the other hand, as shown in FIGS. 4 and 5, a sleeve 24 is inserted and fixed at the center of the cleaner element 15, and the cleaner element 1 of the sleeve 24 is fixed.
A fitting portion 24a is integrally formed at the end protruding outside the fitting 5a. The cleaner element 15 is attached to the cab joint 14 by fitting the end fitting portion 2 of the sleeve 24 inserted through and fixed to the cleaner element 15.
4a is fitted to the boss portion 16a of the backup member 16 so as to cover the boss portion 16a to position the cleaner element 15, and then the quick fastener (male) is attached to the sleeve 24.
This is achieved by engaging the tip screw portion 23A of this through a plate 22 as a quick fastener (female) provided on the boss portion 16a of the backup member 16 (see FIG. 4). In this case, the quick fastener (male) 22 is fixed by engaging the protrusion 19b protruding from the plate 19 with the groove 23a formed in the screw portion 23A of the quick fastener (male) 22, as described above. Since the groove 23a is slightly formed in the screw portion 23A of the quick fastener (male) 22 in a range of about 1/4 of the entire circumference, the quick fastener (male) is used.
The rotation of the cleaner element 15 to the cab joint 14 can be easily and simply performed in a short time with only one quarter turn. At this time, the projection 19b of the plate 19 engages with the engaging groove 23b (see FIG. 6) formed in the screw portion 23A of the quick fastener (male) 22 to rotate the quick fastener (male) 22. A click feeling is given, and the quick fastener (male) 22 is prevented from loosening. Further, the attached cleaner element 1
5 can be removed from the cab joint 14 by rotating the quick fastener (male) 22 in the reverse direction by 1/4 turn in the reverse direction, removing the quick fastener (male) 22 from the plate 19, and attaching the quick fastener (male) 22 to the sleeve 24. Then, the entire cleaner element 15 may be pulled out and removed from the cab joint 14. In this manner, the removal of the cleaner element 15 from the cab joint 14 can be performed easily and in a short time with one touch. As shown in FIG. 7, the same effect as described above can be obtained by using a quick fastener (male) 22 'in which about two turns of the groove 23a' are formed in the screw portion 23A '. In the motorcycle having the above-mentioned detachable structure, when an engine (not shown) is started, air is sucked into the cleaner case 2 by the suction negative pressure generated in the engine, and the air is drawn into the cleaner case 2. The sucked air is purified by passing through the cleaner element 15 and then guided to a carburetor (not shown) through the cab joint 14. In the carburetor, the fuel is sucked into the Venturi passage by the negative pressure generated by the air flow in the Venturi passage, and the fuel is mixed with the air flowing through the Venturi passage.
/ F) is formed. The air-fuel mixture formed in the carburetor as described above is supplied to the engine through an intake pipe (not shown) for combustion, and the high-temperature exhaust gas generated by the combustion of the air-fuel mixture is supplied to the exhaust pipe. The air flows through the exhaust muffler 13 through the exhaust muffler 13 (see FIG. 1), and is discharged from the exhaust muffler 13 into the atmosphere. The above-described series of operations are repeated to operate the engine continuously, and the motorcycle is caused to run at a predetermined speed by the driving force of the engine. As described above, according to the structure for attaching and detaching the cleaner element 15 according to the present embodiment, the attachment and detachment of the cleaner element 15 can be performed by a conventional screw-in type using a thumb screw (FIG. 8).
And FIG. 9), the cleaner element 15 can be easily attached to and detached from the cab joint 14 with a single touch in a short time, thereby improving the workability and maintainability of the cleaner element 15. Can be. Here, the structure of the transmission for a motorcycle according to the present embodiment will be described with reference to FIGS. 8 and 9. FIG.
FIG. 8 is a longitudinal sectional view of the transmission, and FIG. 9 is a sectional view of a shift fork connected to a guide bar. In the transmission shown in FIG. 8, reference numeral 30 denotes a left / right split crankcase, in which a shift shaft 31 is inserted and supported so as to be rotatable along the width direction. A shift lever 32 is attached to one end of the shift shaft 31, and a shift petal 33 is provided at an end of the shift lever 32. A shift drum 34 and two guide bars 35 are arranged in the crankcase 30 in parallel with the shift shaft 31. Here, each guide bar 35 is slidably fitted and held in the left and right holes 30a and 30b formed in the crankcase 30, and a shift fork 36 is fitted around the outer periphery of an intermediate portion thereof. The shift fork 36 is provided with a pin 37 inserted through the shift fork 36 and the guide bar 35.
To the guide bar 35. On the other hand, on the outer periphery of the shift drum 34,
Grooves 34a, 34b, and 34c that are inclined obliquely are formed, and ends of the shift fork 36 are slidably engaged with the grooves 34b and 34c, respectively. When the rider steps on the shift pedal 33 to perform a shift operation, the force is transmitted to the shift shaft 31 via the shift lever 32, and the shift shaft 31 rotates. Then, the rotation of the shift shaft 31 is transmitted to the shift drum 34 to rotate the shift drum 34, but the shift fork 36 engaging with the grooves 34 b and 34 c formed on the outer periphery of the shift drum 34 Is moved right and left together with the guide bar 35 by the rotation of the shift fork 36, the shift gear (not shown) is switched by the movement of the shift fork 36, and a required shift is performed. If there is play between the guide bar 35 and the shift fork 36, there is a problem that the shift fork 36 falls down during the shift operation and the shift feeling deteriorates. Therefore, in this embodiment, the guide bar 3
5 and the shift fork 36 are bonded with an adhesive, so that the guide bar 35 and the shift fork 3
Since there is no backlash in 6, the shift feeling at the time of the shift operation is improved. As is apparent from the above description, according to the present invention, a cleaner element is screwed to a nut member provided on another component to screw the cleaner element to another component. In the structure for attaching and detaching the cleaner element to be detachably attached to the cleaner element, since the bolt member and the nut member are constituted by quick fasteners, the attachment and detachment of the cleaner element can be performed easily and in a short time, thereby improving exchange workability and maintainability. The effect that it can be obtained is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a cleaner case of a motorcycle having the structure of the present invention. FIG. 2 is an enlarged cross-sectional view taken along line AA of FIG. FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1; FIG. 4 is a cutaway side view showing a structure for attaching and detaching a cleaner element according to the present invention. FIG. 5 is an exploded cross-sectional view of a cab joint and a part of the cleaner element showing a structure for attaching and detaching the cleaner element according to the present invention. FIG. 6 is a configuration diagram of a quick fastener. FIG. 7 is a configuration diagram of a quick fastener according to another embodiment. FIG. 8 is a longitudinal sectional view of a transmission portion of the motorcycle. FIG. 9 is a sectional view of a shift fork attached to a guide bar. FIG. 10 is a cutaway side view showing a conventional cleaner element detachable structure. FIG. 11 is an exploded cross-sectional view of a cab joint and a part of the cleaner element showing a conventional cleaner element detachable structure. [Description of Signs] 2 Cleaner case 14 Cab joint (other parts) 15 Cleaner element 16 Backup member 19 Plate (nut member) 22 Quick fastener (bolt member) 24 Sleeve

Claims (1)

Claims: 1. A detachable structure of a cleaner element, wherein a bolt member inserted into the cleaner element is screwed to a nut member provided on another component to thereby detachably attach the cleaner element to another component. A detachable structure for a cleaner element, wherein the bolt member and the nut member are constituted by quick fasteners.