JP2001088765A - Rear cushion unit arranging structure of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening part 57 and a lid 58 to close this opening part 57 on a side wall 56 of a storage box 32 corresponding to a position of an adjusting part of a first spring seat 52 of a rear cushion unit 33 ad to structure it so as to adjust a position of the spring seat 52 of the rear cushion unit 33 from this opening part 57. SOLUTION: It is possible to easily adjust a spring seat position from an opening part of a storage box without removing a car body cover, a muffler, etc., and to improve maintainability in simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle rear cushion unit arrangement suitable for maintenance.

[0002]

2. Description of the Related Art A motorcycle rear cushion unit is usually mounted between a seat pipe for mounting a seat and a swing arm for mounting a rear wheel on a vehicle body frame so as to be vertically movable. As such a rear cushion unit arrangement structure of a motorcycle, for example, a structure described in Japanese Patent Application Laid-Open No. H11-105765 "Body structure of low-floor type motorcycle" is known.

FIG. 1 of the publication discloses a shock absorber 3 as a rear cushion unit, which is provided on a rear frame 17 and a gear case 34 attached to a rear portion of a swing arm 25.
8 and cover the outside of the shock absorber 38 with a rear cover (not shown).
The motorcycle 1 in which a muffler 49 is disposed on the side opposite to the above.

[0004]

In the above technique, the shock absorber 38 is provided, for example, between a rear cushion unit having a vehicle height adjustment mechanism, that is, a spring seat provided on a cylinder side and a piston rod side of a damper. By attaching a coil spring to the inner peripheral part of one spring seat and the outer peripheral part of the cylinder.
When the position is adjusted by turning the spring seat and the rear cushion unit is capable of changing the vehicle height, the position-adjustable spring seat is arranged on the gear case 34 side so that it can be adjusted from below the rear cover. However, it is difficult to use a tool for turning the spring seat from below the rear cover, and the silencer 49 hinders the adjustment of the spring seat of the similar rear cushion unit on the back side of the figure with the tool. become. Further, it is conceivable to adjust the position of the spring seat after removing the rear cover and the silencer 49, but the operation becomes complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a motorcycle rear cushion unit arrangement structure which facilitates maintenance.

[0006]

To achieve the above object, a first aspect of the present invention is to provide a rear cushion unit between a vehicle body cover and an article storage box, the length of which can be adjusted by adjusting the position of a spring seat. In the arranged motorcycle, an opening and a lid for closing the opening are provided on the wall of the article storage box corresponding to the position of the spring seat adjustment unit of the rear cushion unit, and the spring seat position of the rear cushion unit is provided from the opening. Is characterized in that it can be adjusted.

[0007] The lid is removed from the wall of the article storage box corresponding to the position of the spring seat adjustment section of the rear cushion unit of the motorcycle, and the position of the spring seat of the rear cushion unit is adjusted from the opening, so that the vehicle body cover, the article storage box and Change the overall length of the rear cushion unit located between the two.

As a result, the position of the spring seat can be easily adjusted from the opening of the storage box without removing the vehicle body cover, the silencer, and the like, and the maintainability can be improved with a simple structure.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of a motorcycle employing a rear cushion unit arrangement structure according to the present invention. A motorcycle 10 includes a handle 11, a front fork 12 steerable by the handle 11, and a lower end of the front fork 12. The attached front wheel 13 and handle 11
A front cover 14 that covers the front of the front cover 14, side covers 15 and 15 that cover the rear side of the front cover 14 (the reference numeral 15 on the back side is not shown), and these side covers 15 and 15.
15, a floor seat 16, 16 (rear side symbol 16 is not shown), a driver seat 17 and a passenger seat 18 disposed from the upper center to the rear of the vehicle body, and a lower portion of the passenger seat 18. And a body cover 21 as a vehicle body cover that covers the side portion.

The motorcycle 10 has a power unit 24 including an engine 22 disposed at a lower portion of the vehicle body and a transmission 23 mounted at a rear portion of the engine 22.
A swing arm 26 swingably attached to the rear of the transmission case 25 of the transmission 23;
A gear case 27 attached to a rear portion of a left arm portion 26a constituting the swing arm 26;
Rear wheel 28 connected to the output shaft of the transmission case 25
, A storage box 32 as an article storage box attached to the rear pipe 31, and a rear cushion unit 33, 33 extending between the rear pipe 31 and the swing arm 26 side.
(The reference numeral 33 on the back side is not shown). In addition, 34 is a wind screen, and 35 is a muffler.

FIG. 2 is a side view showing the rear cushion unit arrangement structure according to the present invention, and shows a state where the body cover 21 of the motorcycle 10 described with reference to FIG. 1 is removed. The rear cushion unit 33 includes a damper 41 that generates a damping force, and a compression coil spring 42 that generates an elastic force by being compressed.

The damper 41 includes a cylinder 43, a cylinder-side mounting portion 45 provided at an end 44 of the cylinder 43 for mounting on the rear pipe 31, a piston (not shown) movably housed in the cylinder 43, And a rod-side mounting portion 48 provided at an end portion 47 of the piston rod 46 for mounting to the gear case 27.

The cylinder 43 has a thread portion 51 formed on the outer peripheral surface on the end portion 44 side, and a first spring seat 52 supporting one end of the compression coil spring 42 on the male thread portion 51 and a first spring seat 52. Are fixed to each other by screw-locking a lock nut member 53. The piston rod 46 is obtained by attaching a second spring seat 54 that supports the other end of the compression coil spring 42 to a rod-side attachment portion 48.

That is, the rear cushion unit 33 is capable of moving the position of the first spring seat 52 in the axial direction by rotating the first spring seat 52, thereby adjusting the overall length of the shock absorber. It is.

FIG. 3 is a sectional view taken along line 3-3 of FIG.
Rear cushion units 33, 3 whose position can be adjusted
3 is arranged so that the first spring seat 52 is on the rear pipe 31 side, and the storage box 32 is disposed between the rear cushion units 33, 33, and the left and right first spring seats in the storage box 32 described above. Openings 57, 57 are opened in side walls 56, 56 corresponding to the positions of 52 and the lock nut member 53, and lids 58, 5 closing the openings 57, 57 in the side walls 56, 56.
8 are provided on the steps 61, 61 of the storage box 32.
2 is provided.

Here, 26b is a right arm part constituting the swing arm 26, 63, 63 are upper brackets fixed to the rear pipe 31 for mounting the cylinder side mounting part 45 of the rear cushion unit 33 to the rear pipe 31,
64 and 64 are upper mounting bolts, 65 and 65 are upper mounting nuts fixed to the upper bracket 63, and 66 and 66 are gear cases 27 for mounting the rod side mounting portion 48 of the rear cushion unit 33 to the gear case 27 and the right arm portion 26b. And a lower bracket fixed to the right arm 26b, 67 and 67 are lower mounting bolts, and 68 and 68 are lower mounting nuts fixed to the lower bracket 66.

FIGS. 4A and 4B are side views for explaining the main part of the rear cushion unit arrangement structure according to the present invention. FIG. 4A is a view taken in the direction of arrow 4 in FIG.
Indicate that the lid 58 is attached to the side wall 56 with screws 71... (B) shows a state in which the screw is loosened from the side wall 56 of the storage box 32 shown in (a), the lid 58 is removed, and the upper spring seat 52 side of the rear cushion unit 33 is viewed from the opening 57.

FIG. 5 is a plan view for explaining a main part of the rear cushion unit arrangement structure according to the present invention. The rear cushion unit 33 (see FIG. 3) passes through left and right lenses 62, 62 provided in the storage box 32. 1 shows a state in which the respective outer peripheral portions of the spring seat 52 and the lock nut member 53 are looked into. Thus, the storage box 3
By providing the lenses 62, 62 in the step portions 61, 61, the first spring seat 52 and the lock nut member 5 are provided.
3 can be easily confirmed.

The operation of the rear cushion unit arrangement structure described above will now be described. FIGS. 6A to 6C are operation diagrams illustrating an example of the maintenance of the rear cushion unit in the rear cushion unit arrangement structure according to the present invention, and explain the procedure for adjusting the position of the first spring seat 52. In (a), the screws 58 are loosened to remove the lid 58 from the side wall 56.

In (b), a special wrench S is inserted through the opening 57 and the special wrench S is first inserted through the lens 62 while looking at the respective outer peripheral portions of the first spring seat 52 and the lock nut member 53. Hook the outer circumference of the lock nut member 53 and turn it to move as shown by the arrow.
The lock of the first spring seat 52 is released.

Next, the special wrench S is hung around the outer periphery of the first spring seat 52 and turned to move as shown by the arrow, and the upper end position of the compression coil spring 42 with respect to the cylinder 43 is lowered. Thereafter, the special wrench S is hung around the outer peripheral portion of the lock nut member 53 and turned, and is moved as shown by the arrow and pressed against the first spring seat 52 to lock the rotation of the first spring seat 52.

In (c), the lid 58 is mounted on the side wall 56 with screws 71. The same applies to the other rear cushion unit 33. Thus, the position adjustment of the first spring seat 52 of the rear cushion unit 33 is completed. In addition, for example, to remove the rear cushion unit 33 from the rear pipe 31, the lid 58 is removed in the same manner as described above, a tool is inserted from the opening 57, and the upper mounting bolt 64 is turned and removed.

As described above, since the lens 62 is provided on the step portion 61 of the storage box 32, when the first spring seat 52 and the lock nut member 53 are turned with the special spanner S, the first spring seat 52 and the lock nut member 53 are connected via the lens 62. Spring seat 5
2 and the outer peripheral portion of the lock nut member 53 can be looked into, and the outer peripheral portion can be securely turned with the special wrench S. In this case, the first of the rear cushion unit 33
The spring seat 52 needs to have the same adjustment amount on the left and right. In this regard, by providing the lens 62,
The right and left adjustments can be made surely from almost directly above the first spring seat 52, rather than looking into the first spring seat 52 from the opening 57.

As shown in FIGS. 3 to 6,
The rear cushion unit arrangement structure of the motorcycle 10 of the present invention has an automatic structure in which a rear cushion unit 33 capable of adjusting the position of the first spring seat 52 and changing the overall length is disposed between the body cover 21 and the storage box 32. In the motorcycle 10, an opening 57 and a lid 58 for closing the opening 57 are provided in a side wall 56 of the storage box 32 corresponding to the position of the first spring seat 52 adjusting portion of the rear cushion unit 33. The structure is such that the position of the spring seat 52 of the unit 33 can be adjusted.

With the above configuration, the opening 5 of the storage box 32 can be maintained without removing the body cover 21, the muffler 35 and the like.
7, the position of the first spring seat 52 can be easily adjusted, and the maintainability can be improved with a simple structure.

FIG. 7 is a perspective view showing a modified example of the lid according to the present invention.
Are provided with projections 75, 75 to be hooked. In addition,
Reference numeral 76 denotes a swelling portion on which a hand is put when the lid 73 is removed.

FIGS. 8A and 8B are perspective views showing another modification of the lid according to the present invention, and FIG.
Indicates a closed state. The lid 81 has screws 8 on the side wall 56.
A fixing portion 83 fixed at 2 and 82 and an opening / closing portion 85 attached to the fixing portion 83 via a bent portion 84 so as to be openable and closable, and a hand is put on the opening / closing portion 85 when the opening / closing portion 85 is opened. A handle 86 is provided. (B) shows a state where the lid 81 is opened. The lid 81 includes, on the opening / closing section 85, a projection 87 that hangs on the inner edge 74 of the opening 57.

FIG. 9 is a cross-sectional view showing a comparative example of the rear cushion unit arrangement structure.
3 shows a case where the device 3 is arranged upside down from that shown in FIG. That is, the cylinder-side mounting portion 45 of the left rear cushion unit 33 is connected to the lower bracket 6 on the gear case 27 side.
6 and the rod-side mounting portion 48 of the left rear cushion unit 33 is attached to the upper bracket 6 on the rear pipe 31 side.
3 and the right rear cushion unit 33
Is attached to the lower bracket 66 on the right arm portion 26b side of the swing arm 26, and the rod-side attachment portion 48 of the right rear cushion unit 33 is attached to the upper bracket 63 on the rear pipe 31 side. This shows that the seats 52, 52 are arranged on the gear case 27 side and the right arm portion 26b side of the swing arm 26.

In the case of this comparative example, in order to adjust the position of the first spring seat 52, a special wrench S is inserted from the lower side of the body cover 21 on the gear case 27 side, and the first spring seat 52 is And the lock nut member 53 is turned, but the workability is poor because the body cover 21 is in the way. In addition, the swing arm 26
On the right arm portion 26b side, the special wrench S must be inserted from the gap between the body cover 21 and the muffler 35, and it is difficult to adjust the position of the first spring seat 52.

In the present invention, as shown in FIG. 3, an opening 57 is provided in the side wall 56 of the storage box 32, and this opening 57 is closed by the lid 58. An opening may be formed over the portion 61 and the opening may be closed with a lid.

[0031]

According to the present invention, the following effects are exhibited by the above configuration. According to a first aspect of the present invention, there is provided a motorcycle including a rear cushion unit having an opening in a wall of an article storage box corresponding to a position of a spring seat adjuster of the rear cushion unit, and a lid for closing the opening. The structure allows the spring seat position of the cushion unit to be adjusted, so the spring seat position can be easily adjusted from the opening of the storage box without removing the body cover, muffler, etc. The maintainability can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle employing a rear cushion unit arrangement structure according to the present invention.

FIG. 2 is a side view showing a rear cushion unit arrangement structure according to the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a side view illustrating a main part of a rear cushion unit arrangement structure according to the present invention.

FIG. 5 is a plan view illustrating a main part of a rear cushion unit arrangement structure according to the present invention.

FIG. 6 is an operation diagram illustrating an example of maintenance of the rear cushion unit in the rear cushion unit arrangement structure according to the present invention.

FIG. 7 is a perspective view showing a modification of the lid according to the present invention.

FIG. 8 is a perspective view showing another modification of the lid according to the present invention.

FIG. 9 is a cross-sectional view showing a comparative example of a rear cushion unit arrangement structure.

[Explanation of symbols]

10: motorcycle, 21: body cover (body cover), 32: article storage box (storage box), 33
... Rear cushion unit, 52 ... First spring seat, 56 ... Wall (side wall), 57 ... Opening, 58 ... Lid.

Claims (1)

[Claims] 1. A motorcycle in which a rear cushion unit capable of adjusting a spring seat position and changing the overall length is disposed between a vehicle body cover and an article storage box. A motorcycle having a structure in which an opening and a lid for closing the opening are provided on the wall of the article storage box corresponding to the position, and the spring seat position of the rear cushion unit can be adjusted from the opening. Rear cushion unit arrangement structure.