JP2000001189A - Back rest unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the stability of the posture of the occupant on the rear seat while running in the motor cycle including a heavy duty motor scooter. SOLUTION: Behind a rear seat 6R of the heavy duty scooter, a back rest is provided by fixing a supporting portion 16 to the rear of the frame in such a way that the back rest protrudes above the rear seat 6R. The back rest has a seat back 15 to which an occupant B hit the waist or the shoulder and the supporting portion 16 for supporting the seat back 15. To both sides of the back seat 6R, at lower position than the top surface of the rear seat 6R, holding bars and glove bars 17, 17 (holding parts) which the occupant B grips with the hands is provided in such a way that they protrude forward from the supporting portion 16. The occupant B in the rear seat 6R grips with the hands the holding bars and glove bars 17, 17 located at both sides of the rear seat 6R, thereby the stability of the posture of the occupant B is secured during running.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backrest device for a motorcycle, such as a large scooter, which increases the stability of the posture of an occupant of a rear seat during running and facilitates stand-up and handling.

[0002]

2. Description of the Related Art Large scooters have sufficient performance (speed, torque, steering stability, etc.) to meet the demands of entering a highway, winding, etc., compared to small family scooters. A prerequisite is that riding is possible.

[0003]

In the conventional large scooter, the occupant of the front seat can secure a stable posture by grasping the handle with both hands, but there is no gripping means for the occupant of the rear seat. However, the stability of the posture of the occupant in the rear seat has not always been sufficient for various situations during running.

For example, during winding traveling, the occupant of the rear seat can obtain a certain degree of posture stability by a general method in which the occupant of the front seat is gripped with both hands. However, it is difficult for the occupant in the rear seat to immediately support the body when sudden shocks or disturbances occur, such as when the vehicle passes over unevenness on the road surface.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a backrest device for a motorcycle such as a large scooter or the like, which can increase the stability of the posture of an occupant of a rear seat during traveling. .

[0006]

According to the first aspect of the present invention, there is provided a back having a backrest on which the occupant rests on the waist or back and a support for supporting the backrest, behind the rear seat of the motorcycle. A rest is provided so that the support portion is fixed to a rear portion of a frame and protrudes above the rear seat, and a grip portion grasped by an occupant on both sides of the rear seat projects forward from the support portion. It is provided.

According to the first aspect of the present invention, the stability of the posture of the occupant of the rear seat during traveling can be increased by the occupant of the rear seat gripping the grips on both sides of the rear seat by hand. it can. Also, when the occupant gets off the motorcycle and performs stand-up, maneuvering, and the like, the motorcycle can be easily supported by grasping the handle with one hand and the grip portion with the other hand.

Further, in the invention according to claim 2,
The support portion and the grip portion of the backrest are manufactured separately, and the grip portion is connected to the support portion by fastening or the like. According to the invention as set forth in claim 2, when the grip portion is unnecessary, the grip portion can be removed from the support portion without being attached to the support portion, and when the grip portion is needed, the grip portion is removed. It can be mounted on a support.

Further, in the invention according to claim 3,
The grip is disposed at a position lower than the upper surface of the rear sheet. According to the third aspect of the present invention, when the occupant gets on and off the rear seat, the gripping portion does not become a hindrance and can get on and off smoothly.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a large scooter equipped with a backrest device according to a first embodiment of the present invention, and FIG. 2 is a plan view thereof. Then, FIG.
2 is a sectional view taken along line aa in FIG. 2, FIG. 3B is a sectional view taken along line bb in FIG. 2, and FIG. 3C is a plan view of a bracket for attaching a backrest device. is there.

As shown in FIG. 1, a large scooter equipped with the backrest device according to the first embodiment is provided with a frame, and the frame is a head pipe (not shown) for supporting the steering 3. Is provided at a front end, a down tube (not shown) extends downward and rearward from the head pipe, an upper tube 12 extends rearward from an intermediate portion of the down tube, and a main frame 11 extends rearward from a lower rear end of the down tube. The rear end is bent upward and connected to the rear end of the upper tube 12, and the seat rail 13 is formed to extend rearward from the rear upper portion of the main frame 11.

A steering wheel 3 having handles 4, 4 and the like is supported by a head pipe at the front end of the frame, and a seat 6 in which a front seat 6F and a rear seat 6R are integrally formed is an upper seat. The leg space S is provided above the middle of the tube 12 to the rear end of the seat rail 13, and between the steering wheel 3 and the seat 6. The front wheel 1 is mounted below the steering wheel 3 via a fork 5, and below the seat rail 13 of the frame,
A unit swing engine 8 also serving as a swing arm is provided, and the rear wheel 2 is mounted on the unit swing engine 8. A main stand 7 is provided below a front portion of the unit swing engine 8.

The seat 6 has a step structure in which the position of the front seat 6F is low and the position of the rear seat 6R is high, and the seat rail 13 below the rear seat 6R is located at the middle position. Is formed in a low substantially U-shape. A storage box 9 for storing a helmet or the like is provided below the rear seat 6R.
Constitutes an openable and closable lid of the storage box 9.

Then, as shown in FIGS. 1 and 3 (c),
The rear end of the seat rail 13 of the frame is formed in a U-shaped planar shape, and the rear end of the seat frame 13 has a bracket 14 to which a backrest device is attached.
Are fixed by welding. The bracket 14 includes a flat loading portion 14a on which the backrest device is loaded, and a reinforcing portion 14 projecting downward and forward from both ends of the loading portion 14a.
b, 14b, and the loading portion 14a is provided with bolt holes 14c, 14c. The stacking portion 14a is fixed to the upper end of the rear end of the seat frame 13, and the reinforcing portions 14c, 14c are fixed to the side end of the rear end of the seat frame 13.

The backrest device according to the first embodiment comprises:
A backrest portion 15 made of a cushion material or the like on which the occupant of the rear seat 6R rests on the waist or back, a support portion 16 for supporting the backrest portion 15 from behind, and a hold bar / grab bar (gripping portion) that the occupant of the rear seat 6R grasps by hand. ) 17, 1
7 is provided. The lower ends of the support portions 16 are provided with mounting bolts 16b, 16b... And bolt holes 14c, 14b.
are fixed to the bracket 14 via c. Therefore, since the backrest device is not integral with the seat rail 13, it can be optionally provided to meet market requirements.

As shown in FIG. 2, the lower end of the support portion 16 of the backrest device is disposed slightly behind the rear end of the rear seat 6R, and is formed in an arc shape so as to surround the rear end of the rear seat 6R. Further, an inner side surface of the lower end portion of the support portion 16 facing the rear seat 6R is formed in a shape expanding upward and outward as shown in FIG. 3B. As shown in FIG. 1, the upper portion of the support portion 16 protrudes above the rear seat 6R from behind the rear seat 6R, and the backrest portion 15 is fixed to the front surface thereof, and the backrest portion 15 and the support portion 16 are fixed. Constitutes a backrest.

Then, as shown in FIG. 2, two horizontally long hold bars and grab bars 17, 17
At an interval slightly wider than the horizontal width of R, the support portion 16 is provided integrally with the support portion 16 so as to project obliquely forward from both lower ends thereof. The tip of the hold bar / grab bar 17, 17 has a rounded shape, and the inner surface of the hold bar / grab bar 17, 17 facing the rear sheet 6R, as shown in FIG. It is formed in a shape extending upward and outward. As shown in FIG. 1, the hold bar / grab bar 17, 17 is disposed on both sides of the rear seat 6R at a position lower than the upper surface of the rear seat 6R.

The hold bar / grab bar 17, 17 having such a shape and arrangement is used when the occupant of the rear seat 6R gets on and off, or when various occupants sit on the rear seat 6R and the rear seat 6R sinks. Thus, the hold bar / grab bar 17, 17 and the occupant's waist do not interfere with each other, and the occupant's hand can sufficiently reach the hold bar / grab bar 17, 17 with the occupant sitting on the rear seat 6R. ing.

FIG. 4A is a plan view showing the riding form of the occupant of the above-described large scooter, and FIG.
It is the side view.

As shown in FIG. 4, the occupant B of the rear seat 6R grasps the hold bar / grab bar 17, 17 on both sides of the rear seat 6R with both hands, so that the occupant B is in an attitude with respect to various aspects during traveling. Stability can be increased, and even when sudden shocks or disturbances are received, such as when passing through unevenness on the road surface, the body can be held immediately. The occupant A of the main seat 6 can obtain a stable posture during traveling by gripping the handles 4, 4.

Also, when the occupant A of the front seat 6F gets off the large scooter and turns around, or moves around the vehicle, or stands up the main stand 7, the occupant A must use a large hand with one hand. Grasp the front handle 4 of the scooter and use your other hand to hold the rear hold bar / grab bar 17
, The front and back of the large scooter can be easily supported.

FIG. 5A is a plan view of a rear portion of a large scooter equipped with a backrest device according to a second embodiment of the present invention, and FIG. 5B is a side view thereof. FIG.
FIG. 6 is a side view showing a state where an end protector is mounted in place of the hold bar / grab bar in FIG. 5. The description of the same parts as in the first embodiment is omitted, and the same reference numerals are used.

As shown in FIG. 5, the backrest device according to the second embodiment has the same shape and arrangement as the backrest device according to the first embodiment as a whole. The corresponding support portion 26 and the two hold bar / grab bars 27, 27 corresponding to the hold bar / grab bar 17, 17 are separately manufactured, and are assembled by being separably connected by bolting.

That is, the lower front end portion of the support portion 26 and the rear end portion of the hold bar / grab bar 27 are formed in a crank shape so as to abut on the front and back and overlap one another up and down. Both are connected by a bolt 27b (and a screw hole engaging with the bolt) 27b (and a screw hole engaging with the bolt 27b). Therefore, as compared with the case where the support portion of the backrest and the hold bar / grab bar are integrated, it is possible to reduce the size of the forging die and the mold of the support portion 26 and the hold bar / grab bar 27. Further, the hold bar / grab bar 27, 27 can be optional, and can be removed from the support portion 26 when unnecessary, and attached to the support portion 26 when necessary.

The hold bar / grab bar 27, 2
When the support bar 7 is not mounted on the support unit 26, as shown in FIG.
The end protectors 28, 28 are mounted on the support portion 26 to improve the appearance. The end protector 28 has a rear end (connection portion with the support 26) similar to the hold bar / grab bar 27, and a front end shorter and shorter than the hold bar / grab bar 27 and is formed in a substantially hemispherical shape.

Although the embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the case where the grip portion protruding from the support portion of the headrest is a horizontally long hold bar and grab bar has been described, but the grip portion is not limited to a horizontally long bar shape.

[0027]

As described above, according to the first aspect of the present invention, the occupant of the rear seat grasps the grips on both sides of the rear seat by hand, thereby stabilizing the posture of the occupant of the rear seat during traveling. Can be increased, and stand-up, handling, and the like can be easily performed.

According to the second aspect of the present invention, when unnecessary, the grip can be removed from the support without attaching to the support, and when necessary, the grip can be mounted on the support. can do.

According to the third aspect of the present invention, when the occupant of the rear seat gets on and off the vehicle, the gripping portion does not become an obstacle, and the vehicle can get on and off the vehicle smoothly.

[Brief description of the drawings]

FIG. 1 is a side view of a large scooter equipped with a backrest device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the large scooter of FIG.

3 is a sectional view of the hold bar / grab bar taken along line aa in FIG. 2 (a), a sectional view of a support portion taken along line bb in FIG. 2 (b), and a plan view of a bracket for mounting a backrest device. It is a figure (c).

FIG. 4 is a plan view (a) and a side view (b) showing a riding form of an occupant of the large scooter shown in FIGS. 1 and 2;
It is.

FIG. 5 is a plan view (a) and a side view (b) of a rear portion of a large scooter equipped with a backrest device according to a second embodiment of the present invention.

6 is a side view showing a state in which an end protector is mounted instead of the hold bar / grab bar in FIG. 5;

[Explanation of symbols]

 1 Front Wheel 2 Rear Wheel 3 Steering 4 Handle 5 Fork 6 Seat 6F Front Seat 6R Rear Seat 7 Main Stand 8 Unit Swing Engine 9 Storage Box 11 Main Frame (Frame) 12 Upper Tube (Frame) 13 Seat Rail (Frame) 14 Back Rest device mounting bracket 14a Backrest device loading portion 14b Reinforcement portion 14c Bolt hole 15 Backrest portion (backrest) 16 Support portion (backrest) 16b Mounting bolt 17 Hold bar and grab bar (grip portion) 26 Support portion (backrest) 27) Hold bar / grab bar (gripping part) 27a Fitting pin 27b Fastening bolt 28 End protector

Claims (3)

[Claims] A backrest having a backrest on which an occupant rests on the waist or back and a support for supporting the backrest is fixed to a rear portion of a frame behind the rear seat of the motorcycle. A backrest device which is provided so as to protrude above the rear seat, and on both sides of the rear seat, gripping portions which an occupant grips by hand are provided to protrude forward from the support portion. 2. The backrest device according to claim 1, wherein the support portion and the grip portion of the backrest are manufactured separately, and the grip portion is connected to the support portion by fastening or the like. 3. The backrest device according to claim 1, wherein the grip portion is disposed at a position lower than an upper surface of the rear seat.