JPS6321475Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a direction indicating device for an automobile.

(Prior art and its problems) Most of the conventional direction indicating devices for indicating the direction when turning right or left of a car are designed to move the lever of the direction indicating switch provided around the lower shaft of the steering wheel to the right or left. By folding it down, a direction indicator flashing circuit is formed and the direction indicator light flashes, and
Either return the lever to the neutral position by hand, or use the cancel pin provided on the handle to operate the automatic return claw provided on the direction indicator switch when turning the handle back to the straight-ahead direction to move the lever and return it to the neutral position. This causes the direction indicator light to stop flashing, and for this purpose, the direction indicator switch is provided around the lower shaft of the handle integrally with the lever and the automatic return claw.

However, as a recent trend in automobiles,
In addition to such direction indicating switches, daymer switches, wiper switches, watch switches,
A large number of switches such as lighting switches and hazard switches are being arranged around the axis of the steering wheel, and it is therefore becoming increasingly difficult to design a direction indicating switch with the above-mentioned configuration.

In addition, in the direction indicating switch having the above-mentioned configuration, first, when the lever is tilted down to indicate the direction, the cancel pin and the automatic return claw happen to interfere with each other, making it impossible to tilt the lever or hold it in the tilted position. There are some positions where this occurs, and when this inconvenience occurs, there is a problem in that a predetermined direction indicator cannot be blinked. Furthermore, in the direction indicating switch configured as described above, when the rotational speed of the handle is high when returning from a direction change to straight driving, the amount of momentum given to the lever by the cancel pin via the automatic return pawl increases, so that the lever is Due to its own inertia, it passes the neutral position,
There is a problem in that it is easy to cause a malfunction in which the device moves to the opposite direction indicating position.

The present invention aims to solve the above problems.

(Means for Solving the Problems) The configuration of the present invention will be explained based on _FIGS . 1 and ₂ corresponding to the embodiment. The relays R _R and R _L closing circuit are formed by the relay closing circuit, and the cancel contacts 9, 10; 9',
A relay self-holding circuit that is released when 10' is opened;
A direction indicator flashing circuit formed during self-holding of the relay self-holding circuit, an excitation circuit for the coil 8, and a cancel pin C that rotates as the handle H rotates when the coil 8 is excited by the excitation circuit. A claw 1 is provided within the circular locus, which moves toward the center from the outside thereof, and moves outside the circular locus when excitation is released, and the cancel contacts 9, 10; 9',
10' is configured to be opened by the operation of the claw 1 by the cancel pin C which rotates as the handle H is rotated in the return direction, and by opening the cancel contacts 9, 10; 9', 10'. The structure is such that the relay self-holding circuit is released.

(Operation and Examples) Next, the operation of the present invention will be explained together with the embodiment shown in FIGS. 1 and 2.

First, when turning the car to the right, if you close the direction switch P _R corresponding to that direction,
A relay closing circuit is formed in which the power source E passes through the coil of the relay R _R , and is grounded via the direction indicating switch P _R. When such a relay closing circuit is formed, the relay self-holding circuit is connected from the power source E through the coil and contacts of the relay R _R , and the neutral return switch P _N , and is grounded via the normally closed cancel contacts 9 and 10. A circuit is formed. This relay self-holding circuit is released by opening cancel contacts 9 and 10.

During self-holding of such a relay self-holding circuit,
Even if the direction indicator switch P _R is opened, a direction indicator flashing circuit is formed that connects the power supply E through the contacts of the flasher unit F, relay R _R , right direction indicator light L _R , and ground, and the right direction indicator is not activated. The light L _R continues to blink as a direction indicator.

On the other hand, during self-holding of the relay self-holding circuit,
An excitation circuit for the coil 8 is formed from the power source E through the coil 8 and grounded via the diode D, the contacts of the relay R _R , the neutral return switch P _N , and the cancel contacts 9 and 10.
When the iron piece 2 is energized, it is attracted and rotates about the shaft 6, and the claw 1, which is rotatably attached to the shaft 3 provided at the tip of the iron piece 2, rotates as the handle H rotates. Move within the circular locus from the outside toward the center.

When the steering wheel H is rotated clockwise to further change the direction of the car to the right, the cancel pin C pushes and moves the claw 1 within its circular locus,
The claw 1 rotates about the shaft 3 as a fulcrum against the bias of the spring 5, and pushes the cancel contact 10' with the push rod 4, thereby opening the cancel contacts 9' and 10'.
Next, when the cancel pin C passes by, the claw 1 returns to the neutral position again by the spring 5, and this operation is repeated thereafter. The cancel contacts 9' and 10', which are opened when the handle H is further rotated in the direction currently indicated, are as follows:
Since it is a component of the self-holding circuit, the relay R _R corresponding to another direction indication, that is, the left direction indication in this case, is the relay R _R that corresponds to the current direction indication, that is, the right direction indication. Since the self-holding circuit is not released and therefore the excitation of the coil 8 is maintained, the blinking of the direction indication by the right direction indicator light L _R continues. Then, the claw 1 remains within the circular locus of the cancel pin C.

Next, when the car completes a predetermined right turn and turns the steering wheel H back to the left in order to return it to the straight-ahead direction, the cancel pin C moves in this turning direction by pushing and moving the claw 1 in the opposite direction to the above-mentioned direction. Push the corresponding cancel contact 10 to open the cancel contacts 9,10. By opening the cancel contacts 9 and 10, the relay R _R self-holding circuit is released, and at the same time, the direction indicator flashing circuit and the excitation circuit of the coil 8 are released, so the direction indicator flashing of the right direction indicator light L _R is stopped. When the coil 8 is de-energized, the claw 1 moves out of the circular locus of the cancel pin C and is held at a neutral position by the spring 5. In this manner, the direction indicating device of the present invention returns to the neutral position when the handle H returns to the straight direction.

The above operation is the operation when the direction indicator switch P R corresponding to the direction is closed when turning the car to the right, but when turning the car to the left, the corresponding direction switch P _R is closed. Needless to say, the same operation occurs when the direction indicating switch P _L is closed.

In the above operation, the direction switch P _R ,
By closing P _L , a relay R _R and R _L closing circuit is formed, and by forming a relay self-holding circuit, an excitation circuit for coil 8 is formed, and when the claw moves within the circular locus of cancel pin C, If the cancel pin C happens to be in a position where it interferes with the claw 1, the claw 1 will be obstructed by the cancel pin C and will not be able to move within the predetermined circular trajectory. Since the direction indicator blinking circuit is also formed in this case, the direction indicator blinking of the right direction indicator light is performed normally. When the cancel pin C is moved by rotating the handle, it can immediately move within a predetermined circular locus, and thus the cancel contacts 9, 10; ' is also opened normally.

Next, as mentioned above, when turning the steering wheel H back in order to return the car to the straight-ahead direction, when the steering wheel H is rotated at a high speed, the cancel pin C pushes the pawl 1 at a high speed, but the pawl 1 is simply Cancel contacts 9, 1 corresponding to the direction of push and movement
0; 9' and 10', there is no malfunction of pointing in the opposite direction beyond the neutral position.

Furthermore, there is a direction indicator switch that operates the direction indicator.
Since P _R and P _L can be configured at appropriate locations that are not related to the position of the cancel pin C, that is, the part that mechanically detects the return movement of the handle, there is a high degree of freedom in design, and can be easily designed.

The neutral return switch _PN is used to manually return the direction indicator to the neutral position as required.

(Effects of the invention) As described above, the present invention has a high degree of freedom in design because the direction indicator switch for operating the direction indicator can be configured at a suitable location independent of the position of the cancel pin. This has the effect that the design around the handle axis can be easily done.
In addition, the present invention has the disadvantage that when the lever is tilted down to indicate a direction, unlike the conventional configuration, the cancel pin and the automatic return claw happen to interfere with each other, making it impossible to tilt the lever or hold it in the tilted position. Therefore, there is no problem that the predetermined direction indicator blinking cannot be performed, and there is an advantage that the predetermined direction indicator blink can be performed reliably at all times. Furthermore, with the present invention, when returning from a direction change to straight-ahead driving, even if the rotational speed of the steering wheel is high, unlike conventional configurations, the steering wheel passes past the neutral position of the direction indication and moves to the opposite direction indication position. This has the advantage that such malfunctions do not occur.

[Brief explanation of drawings]

All figures correspond to embodiments of the present invention, and the first
The figure is an explanatory diagram of the entire circuit in a state where no direction indicating operation is being performed, and Figure 2 is an explanatory diagram showing the part provided around the axis of the handle and mechanically detecting the returning operation. FIG. Code 1...nail, 2...iron piece, 3...shaft, 4...
...Push rod, 5...Spring, 6...Shaft, 8...Coil,
9, 10; 9', 10'... Cancel contact, H...
...Handle, P _R , P _L ...Direction switch, R _R ,
R _L ... Relay, F... Flasher unit,
E...Power supply, L _R , L _L ...Indicator light, P _N ...Neutral return switch, D, D'...Diode for backflow prevention.

Claims (1)

[Scope of utility model registration request] A relay closing circuit formed when the direction indicating switch is closed, a relay self-holding circuit formed by the relay closing circuit and released when the cancel contact is opened, and a relay self-holding circuit formed during self-holding of the relay self-holding circuit. A direction indicator blinking circuit and a coil excitation circuit, and when the coil is excited by the excitation circuit, the cancel pin moves from the outside toward the center within the circular trajectory of the cancel pin that rotates as the handle rotates. A claw is provided that moves outside the circular trajectory when de-energizing, and the cancel contact is opened by the action of the claw by a cancel pin that rotates as the handle is rotated in the return direction, and the cancel contact is opened. A direction indicating device for a motor vehicle, characterized in that the relay self-holding circuit is released by: