JPS6313852B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device, a so-called interlock, for a vibrator installed in an automobile seat.

BACKGROUND ART A vibrator installed in a car seat, particularly a driver's seat, may cause the driver's eyes to be drawn when used while the vehicle is in motion, so it is necessary to prevent the vibrator from being used while the vehicle is in motion.

The present invention has been made to meet such demands, and one embodiment thereof will be described below with reference to the drawings. FIG. 1 shows a driver's seat of an automobile, and the driver's seat has a seat cushion 1.
0, a seat bag 20, and an electromagnetic vibrator 30 disposed inside the seat bag 20.

The seat back 20 includes a plurality of wave-shaped springs 21 attached to an outer frame (not shown), an elastic body 22 made of urethane foam or the like supported by these wave-shaped springs 21, the outer frame, the wave-shaped spring 21, and the elastic body 2.
2, which integrally covers the driver M in the elastic body 22.
A flat plate 24 made of foam, felt, rubber, etc. harder than the elastic body 22 is buried near the waist of the body. Further, an electromagnetic vibrator 30 is attached to the rear surface of the elastic body 22 near the waist of the driver M, and is disposed in a rear space between the elastic body 22 and the outer skin 23 .

As shown in FIGS. 1 and 2, the electromagnetic vibrator 30 includes an iron substrate 31 fixed to the rear surface of the wave-shaped spring 21, and a proximal end 32 attached to the substrate 31.
It is composed of a U-shaped plate spring 32 fixed at point a, and an electromagnet 33 fixed to the free end 32b of this plate spring 32. In this electromagnetic vibrator 30, when the electromagnetic coil 33A of the electromagnet 33 is periodically energized, the electromagnet 33 is attracted toward the substrate 31 when the current is applied, and when the electromagnet 33 is not energized, the electromagnet 33 returns to its original state. Vibration occurs.

FIG. 3 schematically shows a safety device 40 according to the present invention, which includes an AND circuit 41
, a neutral switch 42, a parking brake switch 43, and an AND circuit 4.
The output from 1 enables the electromagnetic vibrator 30 to be operated (used). The AND circuit 41 is
Input terminal 4 connected to neutral switch 42
1a, an input end 41b connected to the output side of the inverter 44, and an output end 41c connected to the electric control circuit 34 of the electromagnetic vibrator 30, and input is applied to both input ends 41a and 41b. The signal is output to the electric control circuit 34 to enable the electromagnetic vibrator 30 to operate. The neutral switch 42 is a switch that closes when the transmission (not shown) of the vehicle is in a neutral state,
It is interposed between one input terminal 41a of the AND circuit 41 and the positive terminal 50a of the battery power supply 50. The parking brake switch 43 is a switch that closes when the parking brake (not shown) of the vehicle is in an operating state, and is interposed between the input side of the inverter 44 and the negative terminal 50b of the battery power source 50.

In this embodiment configured as described above, when the transmission is in the neutral state and the parking brake is in the operating state, both switches 42 and 43 are activated.
is closed, the AND circuit 41 outputs an output, and this output enables the electromagnetic vibrator 30 to operate. That is, at this time (while the vehicle is stopped), the electromagnetic coil 33A can be periodically energized and the electromagnetic vibrator 30 can be vibrated. The vibrations of the electromagnetic vibrator 30 are particularly transmitted to the driver M via the flat plate 24, thereby relieving fatigue of the driver's M back.

By the way, in this embodiment, when the transmission is not in the neutral state and/or when the parking brake is in the non-operating state, the neutral switch 42 and/or the parking brake switch 43 are opened and the AND circuit 41 does not output. , the electromagnetic vibrator 30 becomes inoperable. In other words, at this time (such as when the vehicle is running),
The electromagnetic coil 33A cannot be energized, and the electromagnetic vibrator 30 cannot be vibrated. Therefore, the problem that the electromagnetic vibrator 30 cannot be used while the vehicle is running, causing the driver M to fall asleep, does not occur at all. Further, as described above, since this effect can be obtained in the same manner even when the transmission is not in the neutral state or when the parking brake is in the non-operating state, it is possible to Or if 43 malfunctions and closes, vibrator 3
0 is kept in an unusable state, providing high security. Further, in this embodiment, the vibrator 30 becomes inoperable due to the driver's will such as operating the transmission to a state other than the neutral state or releasing the parking brake, and returns the transmission to the neutral state. The vibrator 30 can be operated by the driver's will such as operating the parking brake and operating the parking brake, so there is no risk that the vibrator 30 will stop or start unexpectedly, and There is no discomfort caused by unexpected activation or stopping.

In carrying out the present invention, the other input terminal 41b of the AND circuit 41 and the positive terminal 50 of the battery power supply 50 are
It is also possible to construct a safety device by interposing a parking brake switch 43 between

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a driver's seat of an automobile, FIG. 2 is an enlarged view of the electromagnetic vibrator shown in FIG. 1, and FIG. 3 is a schematic configuration diagram of a safety device according to the present invention. Explanation of symbols, 30...Electromagnetic vibrator, 3
4... Electric control circuit, 40... Safety device, 41...
...AND circuit, 41a, 41b...Input terminal of AND circuit, 42...Neutral switch, 43...
...Parking brake switch, 50...Battery power supply.

Claims (1)

[Claims] 1. In a motor vehicle equipped with a vibrator on the driver's seat, an AND circuit that outputs an output to the vibrator's operation control circuit, and an AND circuit that is interposed between one input terminal of this AND circuit and a battery power supply installed in the vehicle, a neutral switch that closes when the transmission of the vehicle is in a neutral state; and a parking brake switch that is interposed between the other input terminal of the AND circuit and the battery power source and closes when the parking brake of the vehicle is in the operating state. A safety device for a vibrator assembled to an automobile seat, comprising: enabling the vibrator to be operated by an output from the AND circuit.