JPS58128981A - Steering gear for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering device for a vehicle, such as a motorcycle or a tricycle, which has a single front steering wheel.

2. Description of the Related Art Conventionally, a steering device for a vehicle having one front wheel, such as a motorcycle, is configured as follows.

That is, the left and right front forks that support the front wheel - the left and right forks - are pivoted to the bed tube provided at the front of the frame via the steering shaft, and are pivoted by the upper and lower bridges. I have provided a request for help through the process. Such conventional steering devices are...

The mounting position of the cable is limited due to the bed tube,...
Due to restrictions on the operating position and angle of the handle, it was difficult to obtain a free operating position and angle.

The present invention has improved the above-mentioned problems of the conventional steering wheel, and has made it possible to arbitrarily set the steering wheel operating position and angle. The steering stem connected to the wheel suspension system is provided separately from the steering stem, and each stem's support tube is connected to the steering stem to restrict lateral movement in the longitudinal direction of the vehicle body, and each stem is connected to a ball joint. To provide a steering device in which the mounting position, mounting angle, operating position, and operating angle of a steering wheel connected by a rod having a steering wheel (with respect to a bed tube) can be arbitrarily set.

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view of a motorcycle, and the embodiment shows a scooter. The front wheel 2 is mounted on the front part of the vehicle body covered with the cover 1.
Further, a seat post 4 is provided at the rear of the step portion 3 of the vehicle body, a seat 5 is provided on the upper part of the seat post 4, and a rear wheel 6 (war unit 7) is pivotally extended at the rear lower part thereof.
) (The power unit 7 consists of an engine and a transmission case unit, and the front part is pivotally attached to the vehicle body side so that it can swing freely.

The front wheel 2 is supported at the lower part of a front fork 8 constituting a suspension system, and the front fork consists of left and right members as is known, and the members are connected by a grip 9 at the upper end.
A first steering stem 10 is located in the center of the bridge 9.
is installed protrudingly.

On the other hand, a head tube 12 is fixedly installed at the front end of the frame 11 covered with the cover 1, and a steering stem 10 is longitudinally inserted into the head tube 12, and bearings 13 are provided above and below the seat tube 12. The stem 10 is rotatably supported by 14. A top plate 15 corresponding to a top bridge is disposed on the head tube 12, and the above-described head tube exit portion of the stem 10 is passed through the center of the top plate 15, and a nut is inserted into the threaded portion 10a at the tip of the stem 10 from above. 16, and fasten the top plate in the axial direction, and heat-tighten the opposing races 13a and 14a of the bearings 13 and 14 between the lower surface of the top plate 15 and the upper surface of the 1st joint 9.

A support stay 1 is installed at the front middle part of the head tube around 12 times.
The stay 17 is made of a press-molded steel plate or the like, has a channel-shaped cross section with a large side angle, and is fixed to the middle part of the lower half 17a''a = 12 circumferences of the hend tube. The upper half 17b is inclined so that the upper part is tilted backward with respect to the stem axis N.The upper half of the support stay 17 faces above the top plate 15, and the upper end of the support stay 17 has a Support tube 18 of the steering stem 21 of No. 2
A bifurcated bracket 19 protruding from the rear of the upper part of the bracket 19 is inserted so that the left and right pieces overlap the left and right sides of the upper end of the support stay, and the support cylinder 18 is attached to the upper part of the support stay 17 using bolts 20.
The upper part is pivoted so that it can swing freely in the front-rear direction while facing upward.

A second steering stem 21 is rotatably passed vertically through bearings 22 and 23 provided at both ends of the support cylinder 18, and is attached to a threaded protrusion 21a of the stem 21 from the upper end of the support cylinder 18).・Configure Ndol...Ndolbype 2
4 screw nuts 25'& handle 74124
Grips 26 are provided at both ends. The center part of the connecting 7 arm 27 is fixed to the outer extending portion of the lower end of the cylinder of the stem 21, and the 7-
71 of the frame 27 27a. 27aY extends to the left and right,
On the other hand, arm portions 1 are provided on the left and right sides of the top plate 15 mentioned above.
5a and 15a are extended. Such arm portions 27a and 15
a rod 28 between which each outer end of a.

30 skirt members extend downward in front of the support tube 18 connected through a ball joint 29. A coil spring 31 is compressed between the spring receiving part 30a and the upper part of the lower half part 17a of the support stay 17, and the skirt member 30, and therefore the support cylinder 18, has a hanging piece constituting the bolt 20 as a fulcrum. In the figure, it is rotated clockwise. Thus, No Ndoruno Ku Eve 2
The second steering stem 21 connected to the second steering stem 21 is disposed above the first steering stem 10 in such a manner that the axis N1 is inclined with the lower part facing forward and the upper part facing backward.

Next, to explain the action and effect in detail...Ndle Grip 26
When the non-dol vibe 24 is moved from side to side, the second steering stem 21 rotates, and the stem 27 at the lower end of the steering stem 27 swings back and forth as a fulcrum for the stem 21, pulling the condo 2B back and forth. , or is pressed, the top plate 15 swings by the arm portion 15a'Y valve connected thereto, and the swinging motion is smoothly and accurately transmitted to the top plate 15 via the joints 29...2. The swinging motion of the top plate 15 is transmitted to the first steering stem 10 rotatably supported by the head tube 12, the stem 10 rotates, and the rotational force is transmitted to the bridge 9 of the front fork 8. 8 to the left and right to perform steering 2.

In the above, by fixing the support cylinder 18 with the support stay 17, the left and right movement of the steering shaft 21 is restricted.
Further, the support cylinder 18 is biased by the elastic force of the spring 310, so that the elastic force in the direction of the tensile force is always applied to the rod 28, and the looseness of the joint 29 is absorbed.

In the above embodiments, the present invention is applied to a scooter-type motorcycle, but the present invention can be applied to other motorcycles and tricycles having two steering wheels.

As is clear from the above, according to the present invention, in a motorcycle or the like, the mounting position, mounting angle, operating position and operating angle of the handlebar can be set according to the specifications, and the structure is simple while satisfying the above requirements. In addition, it has many advantages in terms of operation, such as using a pole joint controller, absorbing looseness with a spring, allowing smooth and accurate operation, and improving steering operability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view of the motorcycle, FIG. 2 is a perspective view of the steering device, FIG. 3 is a side view of the same, and FIG. 4 is a longitudinal sectional view of the same. be. In the drawings, 10.21 is a steering stem, 8 is a suspension device, 17 is a support member, 28 is a rod, and 29 is a joint. Patent Applicant Honda Motor Co., Ltd. Agent Patent Attorney (2) 1) Department of Technology Patent Attorney Kunihiko Ohashi 44F)

Claims (1)

[Claims] A steering stem connected to a steering wheel, a steering stem connected to a wheel suspension system provided separately from the steering stem, and a support member interposed between the two to restrict lateral movement of both; A steering device for a vehicle, comprising a rod that connects a stem with a universal joint.