JPS5881864A - Steering device of dual handle vehicle - Google Patents

Abstract

PURPOSE:To form one of the handles inoperative not rotating at normal time, by connecting a steering wheel to a steering shaft of one of the both handles, provided respectively to the left and right of a driver's seat, through a clutch mechanism. CONSTITUTION:Power steering devices 3, 13 are provided left and right of a a driver's seat. Steering shafts 2, 12, operated as the input shafts to each power steering device 3, 13, are controlled respectively by handles 1, 11. Then a clutch mechanism 31 is provided between the handle 1 and the steering shaft 2 at the left side, normally this clutch mechanism 31 is disengaged. A control lever 28 is operated to actuate a solenoid selector valve 24 through a switch 27, and the clutch mechanism 31 is connected by opening a fluid actuator 26 to the atmosphere through a lead pipe 30.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering device for a dual-handle vehicle.

Vehicles with handles on both the left and right sides are used for vehicles that require the vehicle to be driven on the left side of the road, such as when driving on a highway, and are also used as a medium for teaching purposes. Proposed.

Both handles are controlled by JK, so when one handle is operated, the other handle will follow suit. For this reason, especially in the case of instructional junior high school cars where both the student and the instructor operate the handle, when the student is about to operate the handle, the instructor's handle will also turn around at the same time.
Instructors are not allowed to keep their hands on the steering wheel.

Therefore, it is desirable that one of the steering wheels does not normally rotate, but can be steered as necessary, and that one steering wheel should be given priority over the others. It is desirable that the

The present invention was originally devised by the above-mentioned srs.
The purpose of this is to provide a steering device with both handle hooks that satisfies the above requirements. The hydraulic circuits are interlocked with each other, and a clutch mechanism is installed between one of the steering wheels and the steering shaft.

To explain the present invention based on an embodiment, as shown in FIG. That is, the steering arms are connected to each other by ties (not shown).

Steering shafts 2.12, which are input shafts of the power steering devices 3, 13, are each operated by a handle 1.degree. 11. In the power steering device 3 in the instructor's seat, a hydraulic control valve is operated by the rotation of the steering shaft 2, and a hydraulic pump 22 is supplied to one end chamber of the power cylinder.
A pressure wave is supplied from the conduit 14f, and the working fluid in the other end chamber is returned to the liquid tank 21 via the conduit 5.

Similarly, in the student storage power steering @@13, the hydraulic #Al111 valve is operated by the rotation of the steering shaft 12, and the conduit 1 is connected from the hydraulic pump 22 to one end chamber of the power cylinder.
Pressure liquid is supplied through 4, and liquid is sent from the other end chamber to the liquid tank 21 through connection 1115.

Then, the hydraulic pump 22 is connected to 1lllli14.4 via the switching valve 23 so that in an emergency, the operation of the handle 1 in the instructor's gallery gives priority to steering the wheels. This switching valve 23 is operated by fluid pressure, and when the electromagnetic switching valve 24 is operated via a switch 27 that is opened and closed by an operating lever 28, the fluid pressure tank 25
Fluid pressure is applied to the switching valve 23 through the conduit 29, and the switching valve 23 is switched. At the same time, guide! 30 is cut off from the fluid pressure tank 25 and opened to the atmosphere, the fluid pressure actuator 26 is returned, and a clutch mechanism 31, which will be described later, is connected.

An important feature of the present invention is that the rotational connection between the steering shaft 2 and the handle 1 is connected and interrupted in the steering device for the instructor's seat.

In other words, the 21st! ! As shown in I, the end of the housing 39 is fixed to the vehicle body! ! 37, the end of the steering shaft 2 is supported by a bearing 38, and a clutch plate 42 having a tli 42a acting upwardly is coupled thereto with serrations. On the other hand, the end of the shaft 9 that supports the handle 1 is connected to the end of the housing 39 with the bearing 33! 132 is supported.

A clutch plate 4 is provided on the lower end surface of the shaft 9 with a portion 40a that engages with the portion 42a of the clutch plate 42.
0 are connected with splines.

This clutch plate 40 and edge! Clutch spring 3 between 32 and -
4 is intervened. An annular groove is formed on the curved surface of the clutch plate 40, and a shift lever 41 that engages with the annular groove is inserted into the outer surface of the clutch plate 40.
It is supported by 5. This rod 35 extends substantially parallel to the steering shaft 2, is supported by the housing 39 so as to be able to slide in the axial direction, and is connected to the rod 36 of the hydraulic actuator 26.

As is well known, the fluid pressure actuator 26 has a piston fitted inside a cylinder [forming an operating chamber at one end and an atmospheric chamber at the other end, and an O-rad connected to the piston from this atmospheric chamber. 36 is protruding.

In the above structure JR&:, in the case of a normal driving wheel picture,
State II where the switch 27 is turned on by the operating lever 28
'F: Then, the electromagnetic switching valve 24 directs the conduit 29 to I! 30
Connect to and live! ! It is blocked from 20.

For this reason, the rod 36 of the fluid pressure 26 is projected upward, and the clutch plate 40 is pushed up against the spring 34 by the shift fork 41.
The relationship between the two is broken.

The switching valve 23 also directs the pressure fluid of the w1 pump 22 to the 14.
14 to each power steering device 3.13. In this autumn ship, the steering movement is generated by the power steering wheel 141113 operated by the steering wheel 11 of the live US, and the students can easily perform the steering operation.

Since the instructor's steering wheel 1 is isolated from the steering shaft 2, even if the instructor's steering wheel is in a row, the steering wheel 1 will not be rotated by the steering operation at the student's seat, thereby avoiding trouble. I can do it.

However, if the student's steering operation is immature or an accident such as a collision or a falling bicycle is predicted, the student should close the switch 27 using the operating lever 28, and the solenoid switching valve 2
4 is switched and conduit 29' is blocked from fathom 1!30.
and connected to conduit 20. Therefore, the hydraulic actuator 26 is returned, and the force of the spring 34 causes the teeth 40a of the clutch plate 40 to mesh with the teeth 42a of the clutch plate 42. At four o'clock, the switching valve 23 operates, and the hydraulic pump 2
The pressure fluid of 2 is supplied only to the conduit 4, and the conduit! 14 will no longer be supplied. Therefore, when the instructor operates the steering wheel 1, the power steering device 3 operates in accordance with the operation, thereby making it possible to (c) avoid an accident.

FIG. 3 shows an example of historical theory regarding the clutch mechanism 31, in which spline shafts 46° 45 are provided at the ends of the steering shaft 2 and the shaft 9, respectively, and a clutch sleeve 47 having a spline hole 48 that meshes with these shafts is provided.
is operated by a fluid pressure actuator with a left fork 41 that engages with this outer circumferential annular groove. In this case, the configuration of the clutch mechanism 31 is better.
Since it is simple, it can be provided at low cost.

Furthermore, as shown in FIG. 4, an operating rod 28 (1111
It may be operated manually (see figure). In this case, a 2il recess 51 is provided in the 0-piece 35, and a ball 52 supported on the housing 39 side and biased by a spring is engaged with the recess 51. When the clutch 21J-747 pulls up the lower lower part 35, the engagement with the spline shaft 46 of the steering shaft 2 is disengaged by the spring 50, and in case of an emergency, if the rod 35 is pushed down, the clutch sleeve 47 9 and the spline shaft 46 of the steering shaft 2, and the operation of the instructor's handlebar 1 is transmitted to the power steering device 3.

In this case, it is preferable to use an electromagnetic switching valve as the switching valve 23 shown in FIG. 11, so that it can be switched in conjunction with clutch operation.

4. A complete explanation of the direction of 1111 Figure 1 is a schematic diagram of a steering device such as a teaching stick picture according to the present invention.
Fig. 2 is a side view of the clutch mechanism in the W4@ position, Fig. 3 is a 11-mukai-shinzan diagram showing a second embodiment of the clutch mechanism, and Fig. 4 is a side view of the clutch mechanism in the W4@ position. FIG. 83 is a cross-sectional view showing a No. 83 embodiment.

1.11: Handle 2.12 Steering shaft 3.13: Power steering device 4, 5, 14° 15: Guide 1
9: Shirt t-21: Iil 22: Hydraulic pump
23: Switching valve 24: Electric 111i7J switching valve 25: Fluid pressure h tank 26: iQ body pressure actuator 27:
Switch 28: Operation lever 31: Clutch mechanism 4
0.42: Clutch plate 41: Shaft fork 45
．． 46: Spline shaft 47: Clutch sleeve 48 Nispline hole Patent applicant Isuzu Automatic Fist Co., Ltd. Agent Patent attorney Toshio Yamamoto

Claims (1)

[Claims] (1) In a dual-handle vehicle in which a power steering device is attached to the driver's seat on the left and right of the driver's cab, and the hydraulic circuits of the power steering devices are connected to each other in motion, one steering wheel and the steering shaft are connected to the other. A steering device for both hasidor vehicles, characterized by having a clarachie. (2. In the steering device for a training vehicle or the like according to claim (1), an electromagnetic switching valve that gives priority to one steering operation is provided in the hydraulic circuit 41, and the electromagnetic switching valve is switched by the connecting operation of the clutch. A steering device, such as a double-handled spit, characterized in that a valve is actuated.