JP2001071795A - Seat lock mechanism of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate maintenance work for tail lamps by forming open spaces before the tail lamps when a seat is released along with the unlocking of a lock mechanism utilizing the portions arranged on both seat rail sides each of which forms a part of the lock mechanism. SOLUTION: The pillion seat 40 of a motorcycle is supported on both seat rails 12 vertically openable and closeable and opening and closing mechanisms 64 are arranged between a projection 40b between both leg sections 40a of the seat rails 12 and cross pipes connecting both lower pipes 37 of both seat rails 12. When the cylinder lock 62 arranged at the rear end of a rear fender 46 is operated by a key 63, the pillion seat 40 is unlocked. In this case, portions arranged on both sides of the seat rails 12 forming a part of the lock mechanism 64, i.e., working units 66 and arranged lower than tail lamps 93 so as to form open spaces before the tail lamps 93.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a front frame supporting an engine, a pair of left and right seat rails extending rearward from the front frame are connected to each other, and a tail lamp is disposed at a rear end of a rear cowl that covers the seat rail. The present invention relates to a motorcycle provided with a locking mechanism between a riding seat that can be opened and closed and supported by the two seat rails and the two seat rails, and particularly to an improvement in a seat locking structure.

[0002]

2. Description of the Related Art Conventionally, such a motorcycle is already known, for example, from Japanese Patent Publication No. 7-110623.

[0003]

However, in the prior art described above, a lock mechanism for a pillion seat for seating a passenger is disposed at a position above and in front of the tail lamp, and the locked state of the lock mechanism is released. Even if the pillion seat is opened, the members that are provided on the pillion seat side cooperate with each other to form a locking mechanism, and the members that are attached to the seat rail side remain at the upper front position of the tail lamp. When the maintenance work of the tail lamp is performed, a part of the lock mechanism is obstructed, and it is difficult to perform the maintenance work of the tail lamp.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seat lock structure in a motorcycle that enables maintenance work of a tail lamp to be easily performed.

[0005]

According to a first aspect of the present invention, a pair of left and right seat rails extending rearward from the front frame are connected to a front frame supporting the engine. A tail lamp is disposed at a rear end of a rear cowl that covers a seat rail, and a riding seat that can be opened and closed and supported by the two seat rails, and a motorcycle in which a lock mechanism is provided between the two seat rails, A part that constitutes a part of the lock mechanism and is provided on both the seat rail sides can form an open space in front of the tail lamp when the seat is opened in response to the lock release of the lock mechanism. It is characterized by being disposed below the tail lamp.

According to such a configuration, when the seat is opened by releasing the locked state of the lock mechanism, an open space is formed in front of the tail lamp, so that when performing maintenance work on the tail lamp such as bulb replacement. ,
Portions of the lock mechanism provided on both seat rail sides do not become an obstacle, and maintenance work of the tail lamp can be easily performed.

[0007] The invention according to claim 2 provides the above-described claim 1.
In addition to the configuration of the described invention, the lock mechanism includes an engaged member provided at a lower portion of the seat and an operating unit including an engaging member capable of engaging and disengaging the engaged member. The operating unit is attached to a cross member provided between the two seat rails, and according to this configuration, the operating unit can be firmly supported on both the seat rail sides, and a lock mechanism is provided. The seat can be securely locked.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on one embodiment of the present invention shown in the attached drawings.

1 to 6 show an embodiment of the present invention. FIG. 1 is an overall side view of a motorcycle, FIG. 2 is an enlarged side view of a rear part of the motorcycle, and FIG. 3 is a main part of FIG. 4 is an enlarged longitudinal sectional view, FIG. 4 is a sectional view taken along line 4-4 in FIG. 3, and FIG.
6 is a cross-sectional view corresponding to FIG. 3 in a state where the pillion sheet is open.

First, in FIG. 1, a body frame F of this motorcycle is a front frame 1 on which an engine E is mounted.
1 and a pair of left and right seat rails 12 connected to the rear end of the front frame 11.

A front fork 18 for supporting the front wheel WF is steerably supported on a head pipe 13 provided at the front end of the front frame 11, and a bar handle 19 is connected to an upper end of the front fork 18.

The front frame 11 supports a multi-cylinder engine E in which a plurality of cylinders, for example, four cylinders are arranged in parallel in the width direction of the body frame F. An arm support member 21 is supported at a rear portion of the crankcase 20 of the engine E, and a rear swing arm 22 that supports the rear wheel WR.
Is pivotally supported by the arm support member 21 via a support shaft 23. A link mechanism 24 is provided between the arm support member 21 and the rear swing arm 22, and a rear cushion unit 25 is provided between the link mechanism 24 and a rear portion of the front frame 11.

The power from the output shaft 26 of the transmission built in the engine E is transmitted to the rear wheels WR via the chain transmission means 27.
7 is a drive sprocket 2 fixed to the output shaft 26.
8, a driven sprocket 29 fixed to the rear wheel WR,
An endless chain 30 wound around the sprockets 28 and 29 is arranged on the left side of the engine E in a state facing forward in the traveling direction of the motorcycle.

Above the engine E, the front frame 11
A fuel tank 31 supported at the front of the seat rails 12 is disposed, an air cleaner 32 is disposed between the fuel tank 31 and the engine E, and a radiator 33 is disposed in front of the engine E.

A plurality of, for example, four exhaust pipes 35 connected to the cylinder head 34 of the engine E extend from the front side of the engine E, below the engine E, to the right side of the rear wheel WR. , Is connected to an exhaust muffler 36 disposed on the right side of the rear wheel WR.

Head pipe 1 in front frame 11
The front of the vehicle body 3 is covered with a front cowl 42 made of synthetic resin. Both sides of the front part of the vehicle body are covered with a center cowl 43 made of synthetic resin connected to the front cowl 42. A lower cowl 44 made of synthetic resin and covering a portion arranged below the center cowl 43 is connected to the center cowl 43. Also front cowl 42
Mirrors 4 for rear confirmation
5 are attached.

Referring also to FIG. 2, the seat rail 12
Are a pair of left and right lower pipes 37 whose front ends are fastened to the rear end of the front frame 11 and extend rearward, and extend rearward upward from the rear ends of the front frames 11 above the lower pipes 37. A pair of left and right upper pipes 38 are connected to the rear ends of the lower pipes 37.

The upper pipe 38 has a mounting plate 38a which is formed in a flat shape in a side view and extends upward and rearward.
A pipe 38b extending more gradually from the rear end of the mounting plate 38a with a gentler inclination than 8a. The front end of the mounting plate 38a is fastened to the rear end of the front frame 11.

The mounting plate 38a is cast from an aluminum alloy or the like, and the pipe 38b is extruded from an aluminum alloy or the like so as to have a rectangular cross section. The front end of the pipe 38b is welded to the rear end of the mounting plate 38a.

The lower pipe 37 is formed by extruding an aluminum alloy or the like into a pipe having a square cross section.
The front end of the lower pipe 37 that extends straighter in a side view so as to be steeper and steeper than b, is fastened to the rear end of the front frame 11.

A first support plate 50 is provided between the intermediate portions of the mounting plates 38a in the upper pipes 38, and the pipes 38b in the upper pipes 38 are provided.
Are provided between the upper surfaces of the intermediate portions of the second support plate 51 so as to protrude upward from the upper pipes 38. The first cross pipe 5 is located between the lower pipes 37 near the front.
2 is provided, a second cross pipe 53 as a cross member is provided between the rear ends of the lower pipes 37..., And a connecting plate 54 is provided between intermediate parts of the upper pipes 38 and the lower pipes 37. Be linked.

A holder 74 is fastened to an intermediate portion of the pipes 38b of the upper pipes 38, and a step 75 for a passenger on the pillion seat 40 to put a foot thereon is made foldable. 74 ...
Supported by

A main seat 39 for seating a rider is supported by the seat rails 12 behind the fuel tank 31, and a pillion seat 40 for seating a passenger is seated at a position away from the main seat 39 rearward. It is supported by rails 12.

A rear fender 46 that covers the upper part of the rear wheel WR is attached to the seat rails 12.
A front fender 47 that covers the upper side of F is attached to the front fork 18. The rear frame FR and the rear fender 46 are covered with a rear cowl 48.

The rear fender 46 includes a fender main portion 80 disposed above the rear wheel WR and the fender main portion 8.
It is integrally formed with a rear hanging part 81 hanging downward from the rear end of the zero, and is formed of a synthetic resin.

The fender main part 80 is disposed on the inner side of the pair of left and right lower pipes 37, and is opened substantially upward.
It is formed so as to have a U-shaped cross section. A fitting support portion 82 which is resiliently fitted to the first cross pipe 52 from above is provided integrally with a bottom portion near the front portion of the fader main portion 80. At the lower end from the middle part to the rear end of the fender main part 80, flanges 83 are provided integrally and extended outward so as to come into contact with the lower surfaces of the lower pipes 37. 83 ... lower pipe 37
... is concluded.

By the way, the rear end of the mounting plate 38a in the upper pipe 38 and the front end of the pipe 38b are
The mounting plate 38a is bent inward in the vehicle width direction, and the rear end of the mounting plate 38a is disposed inside the fender main part 80. On the other hand, a rear portion of the pipe 38b is disposed on the outer side of the fender main portion 80, and a cut through which a front end of the pipe 38b, which is bent from the inner side to the outer side of the fender main portion 80, is inserted. Notches 84 are provided on both sides of the fender main portion 80, respectively.

The front portion of the main seat 39 on which the rider sits is provided with mounting plates 38a on both upper pipes 38.
.. Are mounted on the rear end via an elastic member (not shown). On the other hand, an engaged member 55 is fixed to the first support plate 50 provided between the front portions of the upper pipes 38... It is engaged with the engaged member 55 from below. The rear portion of the main sheet 39 is placed on the front end of the pipes 38b and fastened to the pipes 38b by bolts 57. That is, the main seat 39 is fixed on the two seat rails 12 in a state where the bolts 57 are fastened.
2. It can be removed from above.

A bearing member 58 is fixed on a second support plate 51 provided between the intermediate portions of the pipes 38b. The front end of an arm 59 provided below the pillion seat 40 for the passenger and extending forward. The part is rotatably connected to the bearing member 58 via a shaft 60.

3 and 4, at the rear of the pillion seat 40, legs 40a, 40a mounted on the rear of the upper pipes 38, 38 of the left and right seat rails 12, 12 are provided so as to extend downward. Have been. In other words, the pillion sheet 40 has two leg portions 40a, 4
0a on the seat rails 12, 12;
The two seat rails 12, 1 can be switched between an open state in which the rear portion of the pillion seat 40 is flipped upward.
2 supported.

A projection 40b is provided on the pillion seat 40 and extends downward at a central portion between the legs 40a, 40a.
A lock that can be switched between a locked state and an unlocked state by an operation using a key 63 of a cylinder lock 62 provided at the rear end of the rear fender 46 between the lower pipe 37 and the second cross pipe 53 connecting the lower pipes 37. A mechanism 64 is provided.

Referring further to FIG. 5, the lock mechanism 64 enables the engaged member 65 fixed to the projection 40b of the pillion seat 40 and the engagement / disengagement operation to the engaged member 65. And an operating unit 66 having the engaging member 67 and attached to the second cross pipe 53.

The engaged member 65 is formed in a substantially U-shape which is open upward in a vertical plane along the longitudinal direction of the motorcycle, and projects downward from the projection 40b. It is fixed to the lower end of the part 40b.

The operating unit 66 includes the second cross pipe 5
3 and the engaged member 6
And an engagement member 67 slidably supported by the housing 68 so as to be able to engage and disengage with the housing 5, and exerting a spring force for urging the engagement member 67 in a direction for engaging the engaged member 67. Spring 69 provided between housing 68 and engagement member 67
It is composed of

The housing 68 includes the second cross pipe 53
The sliding member 70 is formed so as to have a substantially U-shaped cross-sectional shape which is open upward and has a slide groove 70 for fitting the engaging member 65 so as to slide the engaging member 65 in a direction parallel to the axis of A guide member 71 and a cover 72 fastened to the upper surface of the guide member 71 by screw members 73 so as to close an upper end opening of the slide groove 70,
The cover 72 is welded to the second cross pipe 53.

One end of the slide groove 70 extending parallel to the axis of the second cross pipe 53 is closed, and when the pillion sheet 40 is closed on the cover 72 at a position corresponding to one end of the slide groove 70. The guide member 71 has a pair of slits 77 for guiding the engaged member 65 inserted from the opening 76 to one end of the slide groove 70. , 77 are provided to extend vertically in a direction orthogonal to one end of the slide groove 70.

The engaging member 67 is urged by a spring 69 in a direction to bring one end of the engaging member 67 into contact with one end wall of the slide groove 70. An inclined surface 67a is formed at a lower position as it approaches the one end wall of the groove 70.

In the operation unit 66, when the pillion seat 40 is in the open state, the engagement member 67
Is located at a position where one end thereof is in contact with one end wall of the slide groove 70, and when the pillion sheet 40 is rotated from the open position to the closed position, the pillion sheet 40 is moved from the opening 76 and both slits 77, 77 to one end of the slide groove 70. The engaged member 65 to be inserted
Of the engaging member 67 presses the inclined surface 67a at one end of the engaging member 67 downward. Accordingly, the engaging member 67 is pressed in a direction away from the one end wall of the slide groove 70 while compressing the spring 69, and the engaged member 65 climbs over one end of the engaging member 67 and descends to one end of the slide groove 70. When you do
One end of the engaging member 67 urged by the spring 69 is engaged with the lower end of the engaged member 65 from above.

The cylinder lock 62 is attached to the upper rear end of the rear fender 46. On the other hand, the other end of the engagement member 67 in the operation unit 40 protrudes from the housing 68 and extends to the vicinity of the cylinder lock 62. Thus, the cylinder lock 62 includes a rotating member 78 that rotates in accordance with the operation of the key 63 and contacts the other end of the engaging member 67.
By operating the key 63 to rotate the rotation member 78, the engagement member 67 is moved in a direction in which one end thereof is separated from the one end wall of the slide groove 70, that is, a direction in which the engagement with the engaged member 65 is released. The slide is driven. Therefore, when the cylinder lock 62 is operated with the key 63, the locked state of the pillion seat 40 by the lock mechanism 64 is released.

The upper portion of a lamp housing 94 provided in a tail lamp 93 disposed at the rear end of the rear cowl 48 is mounted on a mounting stay 95 fastened to the rear cowl 48, and both lower sides of the lamp housing 94 are fastened to the rear cowl 48. It is mounted on a pair of left and right mounting stays 96.

The part which constitutes a part of the lock mechanism 64 and is provided on the two seat rails 12, 12, that is, the operation unit 66, opens the pillion seat 40 as shown in FIG. When this is done, it is possible to form an open space 97 in front of the tail lamp 93, and it is arranged below the tail lamp 93.

The outer surface of the second cross pipe 53 to which the operating unit 66 of the lock mechanism 64 is attached is subjected to a surface treatment for preventing rust after the welding to the seat rails 12 and 12 is completed. The second cross pipe 53 is provided with a pair of through holes 98 and 99 for introducing the processing liquid into the second cross pipe 53, as shown in FIG.

Further, one of the two through holes 98, 99 is provided so that the processing liquid in the second cross pipe 53 is sufficiently discharged when the second cross pipe 53 is pulled up from the processing liquid together with the seat rails 12, 12. The position facing downward when raising (the position facing backward when the motorcycle is completed)
At the right end of the second cross pipe 53.

The other through hole 99 is directed downward after the completion of the motorcycle so that the water penetrating from the one through hole 98 can be effectively drained after the completion of the motorcycle. Is provided. In addition, as shown in FIG. 1, when the motorcycle is stopped by taking out the stand 100, the motorcycle takes a posture inclined to the left, so that the other through hole 99 is provided at the left end of the second cross pipe 53. Be placed.

Next, a description will be given of the operation of this embodiment.
Parts provided on the sides 2 and 12, ie, the operation unit 66
Are disposed below the tail lamp 93, and the pillion seat 40 is
When the lamp is opened, an open space 97 is formed in front of the tail lamp 93.
When the maintenance work of Step 3 is performed, the lock mechanism 64
Of the above, the operation unit 66 is not in the way,
Maintenance work of the tail lamp 93 can be easily performed.

Further, the lock mechanism 64 includes an engaged member 65 provided below the pillion seat 40 and an operating unit 66 having an engaging member 67 capable of engaging and disengaging the engaged member 65. Since the operating unit 66 is attached to the second cross pipe 53 provided between the left and right seat rails 12, 12, the operating unit 66 is firmly supported on both seat rails 12, 12. Thus, the pillion seat 40 can be securely locked by the lock mechanism 64.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

For example, in the above embodiment, the motorcycle having the main seat 39 and the pillion seat 40 separated from each other has been described. However, the present invention relates to a motorcycle in which the main seat 39 and the pillion seat 40 are integrated, It is also possible to implement in connection with a motorcycle having only a seat on which a rider sits.

[0049]

As described above, according to the first aspect of the present invention, when the maintenance work of the tail lamp such as the replacement of the bulb is performed, the portions of the lock mechanism provided on both the seat rail sides become obstructive. By doing so, the maintenance work of the tail lamp can be easily performed.

According to the second aspect of the present invention, the operating unit can be firmly supported on both seat rail sides, and the seat can be securely locked by the lock mechanism.

[Brief description of the drawings]

FIG. 1 is an overall side view of a motorcycle.

FIG. 2 is a rear enlarged side view of the motorcycle.

FIG. 3 is an enlarged vertical sectional view of a main part of FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 3;

FIG. 6 is a cross-sectional view corresponding to FIG. 3 in a pillion sheet opened state.

[Explanation of symbols]

 11 Front frame 12 Seat rail 40 Pillion seat 48 Rear cowl 53 Second cross pipe as cross member 64 Lock mechanism 65 Engaged member 66 ... operating unit 67 ... engaging member 93 ... tail lamp 97 ... open space E ... engine

Claims (2)

[Claims] 1. A pair of left and right seat rails (12) extending rearward from the front frame (11) are coupled to a front frame (11) supporting the engine (E), and cover the seat rails (12). A tail lamp (93) is arranged at the rear end of the rear cowl (48), and is openable and closable and is supported by the seat rails (12).
0) and a motorcycle provided with a lock mechanism (64) between the two seat rails (12), a part of the lock mechanism (64) is provided on the both seat rail (12) side. Is the lock mechanism (6)
When the seat (40) is opened in response to the lock release in 4), an open space (97) can be formed in front of the tail lamp (93), and is disposed below the tail lamp (93). A seat lock structure for a motorcycle. 2. The locking mechanism (64) includes an engaged member (65) provided at a lower portion of the seat (40), and an engagement / disengagement operation with respect to the engaged member (65). An operating unit (66) including a joining member (67),
The seat lock structure for a motorcycle according to claim 1, wherein the operating unit (66) is attached to a cross member (53) provided between the two seat rails (12).