JPH11268585A - Back mirror device for traction vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a change of an angle through simple constitution, in a back mirror device to continuously change the angle of a back mirror body according to the angle of a truck to which a traction vehicle is coupled during running. SOLUTION: A back mirror body 1 is arranged in a position visible from the driver's seat of a traction vehicle 10. The spindle 2 of the back mirror body 1 is connected to the rotary shaft 4 of a servo motor 3. The angle of the axis of the truck 11 with the advancing direction of the traction vehicle 10 is detected by an angle detecting device 5. Drive of the servo motor 3 is controlled according to the detecting angle of the angle detecting device 5, and the angle of the back mirror body 1 is continuously changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rearview mirror device for a vehicle to which a truck such as a trailer is connected and towed.

[0002]

2. Description of the Related Art Conventionally, a general vehicle has a rearview mirror whose angle can be changed by electric power. However, conventional rearview mirrors for vehicles connected with trucks such as trailers are fixed angle type, so once the rearview mirror angle is determined by operating from the driver's seat, it is natural that even during traveling This angle does not change.

[0003]

Therefore, there are many disadvantages in the case of a vehicle such as a trailer that pulls a bogie. In other words, in the case of a vehicle such as a trailer that pulls a bogie, the angle between the tow vehicle and the bogie connected to it is larger than that of a normal vehicle in a curve, and a blind spot that cannot be seen from the rearview mirror may be formed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and continuously changes the angle of a rearview mirror in accordance with the angle of a towing vehicle and a bogie connected to the vehicle during traveling, so that the vehicle can be used when traveling on a curve. It is an object of the present invention to provide a rearview mirror device capable of eliminating a blind spot of a rearview mirror and using a servomotor to easily change the angle of the rearview mirror body.

[0005]

SUMMARY OF THE INVENTION The gist of the present invention resides in that a rearview mirror main body is disposed at a position visible from a driver's seat of a towing vehicle, and the rearview mirror body is connected to the towing vehicle and towed. A rearview mirror device for a towing vehicle configured to continuously change the angle of the rearview mirror body in accordance with an angle between an axis and a traveling direction of the towing vehicle, wherein the angle of the rearview mirror body is changed by a servomotor. In the rearview mirror device for towing vehicles.

Further, the present invention will be described more specifically.
Servo for connecting the rearview mirror main body arranged at a position visible from the driver's seat of the towing vehicle and the rearview mirror main body directly or through connection means such as gears to continuously change the angle of the rearview mirror main body A motor, and an angle detection device that detects an angle of an axis of the bogie with respect to a traveling direction of the towing vehicle,
A rearview mirror device for a towing vehicle, comprising: a servomotor control device that controls driving of the servomotor in accordance with a detection angle of the angle detection device.

[0007] Further, as a specific example of the angle detecting device in the device, a pinion provided on a towing vehicle and a volume type resistor connected thereto, and a pinion provided on a bogie such that the center of the coupler is concentric with the pinion are engaged. And an arc-shaped rack.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall explanatory diagram of a first embodiment of the present invention, and FIGS. 2 and 3 are operation explanatory diagrams.

In FIG. 1, reference numeral 1 denotes a rearview mirror main body, which is disposed at a position visible from a driver's seat of a towing vehicle. Reference numeral 2 denotes a support shaft of the rearview mirror main body 1. 3 is a servo motor,
This is for changing the angle of the rearview mirror body 1 continuously. The rotary shaft 4 of the servo motor 3 is directly connected to the support shaft 2 of the rearview mirror body 1.
In the drawing, θ is the rotation angle of the servo motor 3.

Reference numeral 5 denotes an angle detection device for detecting an angle of the axis of the bogie with respect to the traveling direction of the towing vehicle. In the present embodiment, the angle detecting device 5 includes an arc-shaped angle detecting member 6 provided on the towing vehicle and concentric with the center of the coupler, and a contact 7 provided on the bogie and in contact with the arc-shaped angle detecting member 6. Consists of

Reference numeral 8 denotes a servo motor control device for controlling the driving of the servo motor 3 according to the angle detected by the angle detecting device 5.

Reference numeral 9 denotes a battery for operating the servo motor 3 and the servo motor controller 8. 10 is a towing vehicle, 10a is a coupler, and 11 is a bogie.

The present embodiment operates as shown in FIGS. FIG. 2 shows the traveling direction of the towing vehicle 10 and the bogie 1
In this case, the rearview mirror body 1 has the same angle as that of a normal vehicle. Note that 1a is a confirmation range by the rearview mirror.

[0014] Then, the vehicle is approaching a curve during traveling, and FIG.
When an angle is formed between the traveling direction of the towing vehicle 10 and the axis of the bogie 11 as shown in FIG. Thereby, the confirmation range of the rear-view mirror body 1 is shifted to a position where the rear part of the cart 11 can be seen. Therefore, the blind spot of the rearview mirror as in the related art can be eliminated.

Next, the second embodiment of the present invention shown in FIGS.
An embodiment will be described. This embodiment is different from the first embodiment in the angle detecting device. still,
Other configurations are the same as in the first embodiment.

That is, the angle detecting device 12 of the present embodiment
It comprises a pinion 13 provided on the towing vehicle 10 and a volume resistor 14 connected thereto, and an arc-shaped rack 15 meshed with the pinion 13 provided on the bogie 11 with the center of the coupler 10a concentric. The arc-shaped rack 15 may be changed to a chain.

Thus, in the case of the present embodiment, the change in the electric resistance of the volume type resistor 14 is measured by the rearview mirror body 1.
Is taken out as a signal of the change in the angle. Since other configurations are the same as those of the first embodiment, the same members are denoted by the same reference numerals, and detailed description will be omitted.

Next, a third embodiment of the present invention shown in FIG. 8 will be described. In this embodiment, the support shaft 2 of the rearview mirror body 1 and the rotation shaft 4 of the servomotor 3 are connected to gears 16 and 17.
Are connected by Since other configurations and operations are the same as those of the first embodiment, the same members are denoted by the same reference numerals, and detailed description is omitted.

[0019]

The present invention has the above-described structure and operation,
The angle of the rearview mirror body can be continuously changed according to the angle between the towing vehicle and the bogie connected to the traveling vehicle. Therefore, the blind spot of the rearview mirror can be eliminated when traveling on a curve.

In particular, as a feature of the present invention, since a servomotor is used as a driving source of the rearview mirror main body, the rotation angle of the rearview mirror main body can be easily changed by electrically changing the voltage or electric quantity of the signal current. Can be continuously changed. Further, since the entire structure can be simplified by using the servomotor, it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram of a first embodiment of the present invention.

FIG. 2 is an operation explanatory view of the first embodiment, showing a state of straight running.

FIG. 3 is an operation explanatory view of the first embodiment, showing a state of running on a curve.

FIG. 4 is a plan view of a towing vehicle equipped with an angle detection device according to a second embodiment of the present invention.

FIG. 5 is a side view of the towing vehicle shown in FIG. 4;

FIG. 6 is a plan view of a truck connected to the towing vehicle shown in FIG. 4;

FIG. 7 is a side view of the bogie shown in FIG. 6;

FIG. 8 is an explanatory diagram of a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rearview mirror main body 2 Rearview mirror main shaft 3 Servomotor 4 Servomotor rotation axis 5 Angle detection device 8 Servomotor control device 9 Battery 10 Traction vehicle 11 Cart 12 Angle detection device 13 Pinion 14 Volume resistor 15 Arc-shaped Rack 16, 17 gear

Claims (3)

[Claims] 1. A rearview mirror body is disposed at a position visible from a driver's seat of a tow vehicle, and the rearview mirror body is continuously connected to an axis of a bogie connected to the tow vehicle and towed and an angle of a traveling direction of the tow vehicle. A towing vehicle rearview mirror device for changing an angle of a rearview mirror body, wherein the angle of the rearview mirror body is changed by a servomotor. 2. A rearview mirror body disposed at a position visible from a driver's seat of a towing vehicle, and the rearview mirror body is connected through a direct connection or a connection means such as a gear, and the angle of the rearview mirror body is continuously changed. A servo motor for changing, an angle detection device that detects an angle of the axis of the bogie with respect to the traveling direction of the towing vehicle, and a servo motor control device that controls driving of the servo motor according to the detection angle of the angle detection device. Rearview mirror device for towing vehicles. 3. An angle detecting device comprising a pinion provided on a towing vehicle, a volume type resistor connected to the pinion, and an arc-shaped rack provided on a bogie with a center of a coupler concentric with the pinion. The rearview mirror device for a towing vehicle according to claim 2, which is an angle detection device.