JPH0994353A - Seat supporting structure for light vehicle such as cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the rigidity of a car body frame from being changed by the position adjustment in back and forth direction of a seat and to facilitate the strength design of the car body frame. SOLUTION: Two left and right seat rails 17 are attached to the car body frame 2 through front and back mounting rubber 26 and 27 and the seat 15 is attached to the seat rails 17 adjustably to a position in the back and forth direction. In such a manner, since the two left and right seat rails 17 are attached to the car body frame 2 through the front and back mounting rubber 26 and 27, the two left and right seat rails 17 are held in the state of being separated from the car body frame 2. Thus, even when the seat 15 is adjusted to the position in the back and forth direction along the two left and right seat rails 17, the rigidity of the car body frame 2 is not changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat support structure for a light vehicle such as a cart.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Laid-Open No. 59-73992 is known in which a seat support structure for a light vehicle such as a cart is a slide type. 6 (a) and 6 (b) are operation diagrams of a conventional cart seat supporting structure, and FIG. 6 (a) shows a state in which the seat is moved rearward. Generally, a vehicle body frame 101 of a cart 100 used for playing or racing comprises left and right side frames 102, 103 connected by a plurality of cross members 104, 105, 106. This body frame 101 uses front and rear wheels 1 without using suspension.
07 and 108 are directly provided. Also, the body frame 1
Two left and right seat rails 109, 109 are fixed to 01, and a seat 110 shown by an imaginary line is attached to the two left and right seat rails 109, 109 so that the position thereof can be adjusted in the front-rear direction. The position of the seat 110 can be adjusted back and forth according to the physique or preference of the operator.

(B) shows a state in which the seat 110 is moved forward. That is, the seat 1 along the two left and right seat rails 109, 109 fixed to the vehicle body frame 101.
10 shows a state in which 10 is moved to the front position and held.

[0004]

However, in the conventional cart 100, the left and right seat rails 109, 109 are fixed to the vehicle body frame 101, so that the seats are mounted along the left and right seat rails 109, 109. Is adjusted to the position in the front-rear direction, the rigidity of the body frame 101 changes. Therefore, it is necessary to design the strength of the body frame 101 in consideration of the change in the rigidity of the body frame 101.

Therefore, an object of the present invention is to facilitate the design of the vehicle body frame by preventing the rigidity of the vehicle body frame from changing even if the seat position is adjusted in the front-rear direction.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a light vehicle such as a cart in which wheels are directly attached to a vehicle body frame. The seat rail is attached to the seat rail so that the seat can be adjusted in the front-rear direction. Since the two left and right seat rails are attached to the vehicle body frame via the elastic body, the two left and right seat rails can be held in a state of being separated from the vehicle body frame. Therefore, the rigidity of the vehicle body frame does not change even if the seat is adjusted to the front-rear position along the two left and right seat rails.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION 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 plan view of a cart having a seat support structure for a light vehicle such as a cart according to the present invention.
Is a vehicle body frame 2, front wheels 10, 10 arranged in front of and behind the vehicle body frame 2, rear wheels 11, 11, a seat 15 attached to the rear center of the vehicle body frame 2, and a right side of the seat 15 of the vehicle body frame 2. (Based on occupants. The same applies below)
An air-cooled engine 35 mounted on the vehicle, a brake 36 arranged on the left rear side of the seat 15, a steering wheel 37 arranged on the front side of the seat 15, a rear curl 40 arranged around the seat 15, and a front portion of the vehicle body frame 2. Front bumper 45. In addition, 48 and 48 are side bumpers.

The body frame 2 is a left side frame 3
A right side frame 4, a front cross member 5 passed to the front ends of the left and right side frames 3 and 4, an intermediate cross member 6 passed to an intermediate portion of the left and right side frames 3 and 4, and left and right sides. It consists of a rear cross member 7 passed to the rear of the frames 3 and 4. The front cross member 5 includes an upper bar 8 and a lower bar 9 protruding forward.

The front wheels 10, 10 are knuckle arms 12,
It is directly and rotatably attached to the left and right sides of the front portion of the vehicle body frame 2 via 12 (in a state where the suspension is not used). Further, the rear wheels 11, 11 are rotatably attached directly (in a state where the suspension is not used) to the left and right sides of the rear portion of the vehicle body frame 2 via the rear axle 13.
A seat support structure 16 to be described later is arranged between the intermediate cross member 6 and the rear cross member 7 of the vehicle body frame 2, and the seat 15 is attached to the seat support structure 16 such that the position of the seat 15 can be adjusted in the front-rear direction.

A rear curl 40 provided around the seat 15
Is an engine cover portion 41 formed on the right side of the seat 15.
And a brake cover portion 42 formed on the left rear side of the seat 15 and a rear cover portion 43 integrally formed with these covers 41, 42. A running air intake 41a is formed at the front end of the engine cover 41, and a running air intake 42a is formed at the front end of the brake cover 42.

The front bumper 45 is a body frame 2
Of the front cross member 5 is bolted to two positions of the upper bar 8 and the lower bar 9 of the front cross member 5. This front bumper 45 is made of polypropylene (P
It is preferable to use P) material or the like for injection molding into a box-shaped structure and a wedge-type surface having a tapered surface so that the tip portion is tapered. As a result, the front bumper 45
Can reduce the air resistance during traveling, and can further obtain the front downforce. If the front bumper 45 has a box-shaped structure, it is possible to secure impact resistance as a bumper. Further, a brake ventilation recess 46 and an engine ventilation recess 47 are formed at the left and right ends of the front bumper 45.

The driving force of the air-cooled engine 35 arranged on the right side of the seat 15 is transmitted to the rear axle 13 by a power transmission mechanism 14 such as a chain. As a result, the pair of rear wheels 11, 1 attached to both ends of the rear axle 13
1 is the driving wheel. The brake 36 provided on the left rear side of the seat 15 includes a disc 36a coaxially attached to the rear axle 13 and a caliper (not shown). The caliper pad is pressed against the disc 36a to press the rear wheel 11,
Control the rotation of 11.

FIG. 2 is a side view of a cart having a seat support structure for a light vehicle such as a cart according to the present invention. The steering 37 includes a steering shaft 37a and a steering wheel 37b provided on the top of the steering shaft 37a. The steering shaft 37a is rotatably supported by a mounting mount 38. The steering force of the steering wheel 37b is transmitted to the front wheels 10, 10 via the tie rod 39 and the knuckle arm 12 shown in FIG. Reference numeral 49 is a front panel.

FIG. 3 is a plan view of a seat support structure for a light vehicle such as a cart according to the present invention. The seat support structure 16 described above includes two left and right seat rails 17, 17 that are passed over the vehicle body frame 2 in the front-rear direction, a slide frame 18 that is movably attached to the seat rails 17, 17 in the front-rear direction, and a slide frame 18. It comprises a seat frame 19 standing upright and a locking means 30 for locking the slide frame 18 at the adjustment position.

The slide frame 18 is composed of outer tubes 20 and 20 movably fitted in two left and right seat rails 17 and 17, and a connecting bar 21 connecting the outer tubes 20 and 20. Further, the seat frame 19 is formed in a substantially inverted U-shape, and is erected on the left and right outer tubes 20, 20 so as to be positioned behind the seat 15. And
The seat 15 is attached to the slide frame 18 with bolts (not shown) fitted into the mounting holes 22a, 22a of the brackets 22, 22 of the connecting bar 21, and the seats are attached with the bolts 23, 23 (only one shown) shown in FIG. Attach to the frame 19.

FIG. 4 is a side view of a seat support structure for a light vehicle such as a cart according to the present invention. The seat rail 17 includes a tubular rail portion 25 and cylindrical front and rear mount rubbers 26, 2 that are press-fitted into the front end portion and the rear end portion of the rail portion 25.
Consists of 7 mag. The front end of the rail portion 25 is held on the vehicle body frame 2 by a front stay 28 press-fitted into the front mount rubber 26. Further, the rear end portion of the rail portion 25 is press-fitted into the rear mount rubber 27 and is attached to the rear stay 29 by the rear stay 29.
To hold. As a result, the left and right seat rails 17
Is attached to the vehicle body frame 2 in a separated state. The left rail portion 25 is formed with lock holes 25a, 25a ... Along the axial direction.

The outer tube 2 on the left side of the slide frame 18
0 is provided with a locking means 30, and the locking means 30 is composed of a seat lever 32 swingably supported by a pin 31 on the left outer tube 20, and a tension spring 33 for urging the seat lever 32 to a locked position. The seat lever 32 is held in the locked position by the urging force of the tension spring 33, so that the locking projection 32a of the seat lever 32 is locked in the lock hole 20a of the left outer tube 20 and the lock holes 25a, 25a of the left rail 25. ... and locks the seat 15 in the adjustment position.

On the other hand, the seat lever 32 is pulled by the tension spring 33.
By lifting from the lock position against the urging force of
The locking projection 32a is provided with the lock hole 20a of the left outer tube 20 and the lock hole 25a of the left rail portion 25,
25a ... Remove the seat 15 from the lock.

The operation of the seat support structure for a light vehicle such as a cart according to the present invention described above will be described below. FIG.
(A), (b) is explanatory drawing of the seat support structure which concerns on this invention, and in (a), right and left two seat rails 1
7, 17 are attached to the vehicle body frame 2 by the front mount rubbers 26, 26 and the rear mount rubbers 27, 27 which are modeled after springs, and the seat rail 1 in this state
The sheet 15 is placed on Nos. 7 and 17. This sheet 15 is movable back and forth from the position of the thick line to the position of the thin line.

In order to simplify the description, (b) shows the left and right two seat rails 17, 17 shown in (a).
Shows the state removed from. That is, as described in (a), since the two left and right seat rails 17 are attached to the vehicle body frame 2 in a separated state, the rigidity of the vehicle body frame 2 does not change even if the seat 15 is adjusted in the front-rear direction.
Therefore, since the rigidity design of the vehicle body frame 2 can be performed in the state of (b), the strength design of the vehicle body frame 2 becomes easy.

[0021]

The present invention has the following effects due to the above configuration. According to the present invention, the left and right seat rails are attached to the vehicle body frame through the elastic body, and the seats are attached to these seat rails so that the position of the seat can be adjusted in the front-rear direction. In this way, since the two left and right seat rails are attached to the body frame via the elastic body, the two left and right seat rails can be held in a state of being separated from the body frame. As a result, the rigidity of the vehicle body frame does not change even if the seat is adjusted to the position in the front-rear direction along the two left and right seat rails, which facilitates the strength design of the vehicle body frame.

[Brief description of drawings]

FIG. 1 is a plan view of a cart having a seat support structure for a light vehicle such as a cart according to the present invention.

FIG. 2 is a side view of a cart having a seat support structure for a light vehicle such as a cart according to the present invention.

FIG. 3 is a plan view of a seat support structure for a light vehicle such as a cart according to the present invention.

FIG. 4 is a side view of a seat support structure for a light vehicle such as a cart according to the present invention.

FIG. 5 is an explanatory view of a seat support structure according to the present invention.

FIG. 6 is an operation diagram of a conventional cart seat support structure.

[Explanation of symbols]

1 ... Cart, 2 ... Body frame, 15 ... Seat, 16 ...
Seat support structure for light vehicles such as carts, 17 ... Seat rails, 26 ... Front mount rubber (elastic body), 27 ... Rear mount rubber (elastic body).

Claims (1)

[Claims] 1. In a light vehicle such as a cart in which wheels are directly attached to a body frame, two left and right seat rails are attached to the body frame via elastic members, and seats are positioned in the front-rear direction on the seat rails. Seat support structure for light vehicles such as carts, which is characterized by being adjustable.