JP2788686B2 - Seat vibration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat vibration device used for a driver's seat of a motor vehicle for preventing sleepless driving.

[0002]

2. Description of the Related Art Various devices have been proposed to prevent the driver of a car or the like from sleeping. These devices usually include sensing means for sensing that the driver is making a nap, and wake-up means for receiving the sneezing detection signal from the sensing means to wake the driver. For example, as the sensing means, if the driver starts to sleep, the driver will tilt the head forward, so the number of times the head is tilted per unit time, the time during which the head is tilted, etc. There is something that senses and sends this to the wake-up means as a wake-up detection signal, and the wake-up means operates when the above-mentioned wake-up detection signal is sent,
Some wake up with a loud noise at the driver's ear. Therefore, according to this device, when the driver makes a nap, it senses that the driver is making a nap due to the inclination of the head, thereby activating the wake-up means to wake up the driver. be able to.

[0003]

However, since the above-mentioned device wakes up after the driver has sowed, when the driver is sowed to the extent that it cannot be sensed by the sensing means, Loss of concentration due to drowsiness may cause an accident.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a seat vibrating device capable of effectively preventing sleepless driving.

[0005]

To achieve the above object, a seat vibration device according to the present invention is provided with a rod mounted on a vehicle body and extending vertically, and a lower end of the rod is movable vertically. A cylinder chamber disposed therein, a piston fixed to a lower end of the rod and sliding up and down while sliding on the inner peripheral surface of the cylinder chamber when the rod is moved, and a piston separated by a piston of the cylinder chamber. A buffer having a communication passage communicating the space, a flow rate switching means for switching an amount of fluid flowing between the upper and lower spaces, and an instruction means for instructing the flow rate switching means to perform a switching operation. Take.

[0006]

That is, the inventor of the present invention has conducted a series of studies on a device for effectively preventing the driver from sneezing, and as a result of conducting a series of studies, the driver started to sneeze, and this was detected by the sensing means. Recalling that awakening the driver does not completely eliminate the accident due to insane driving, and further researching, by vibrating the body moderately, makes it impossible for the driver to sleep at all. If this is done, the inventor has found that accidents caused by the sleepless driving can be completely eliminated when the sleepless driving is completely eliminated, and the present invention has been achieved.

Next, the present invention will be described in detail based on embodiments.

[0008]

1 to 4 are sectional views showing a main part of an embodiment of the present invention, and FIG. 5 is a structural view of an automobile. In these figures, 1 is a shock absorber (buffer)
And a casing 2 attached to a casing 22 of an axle of the automobile 20 and a rod 3 attached to a vehicle body 21. A cylinder chamber (oil chamber) 9 is formed in the casing 2, and a lower end 3 a of the rod 3 is disposed in the cylinder chamber 9 so as to be movable in the vertical direction. A piston 4 is fixed to the lower end 3a. As the lower end 3a moves in the cylinder chamber 9, the piston 4 slides the outer peripheral surface of the piston 4 into contact with the inner peripheral surface of the cylinder chamber 9 to move the cylinder. The chamber 9 slides up and down, whereby the cylinder chamber 9 is partitioned into two upper and lower spaces. The piston 4 is provided with through holes 4a, 4b of different diameters in the vertical direction, and valve means 10, 11 provided on the upper and lower sides thereof.
As a result, the oil mainly flows through the small-diameter through hole 4a when the rod 3 rises, and flows through the large-diameter through hole 4b when the rod 3 descends.

At the lower end 3a of the rod 3, an oil passage 6 extending upward from the lower end surface is formed at the center of the inside, and a long hole 3d is formed upward from the upper end surface of the oil passage 6. The long hole 3 d is open at the upper end surface of the rod 3. The lower end 3a has a large diameter portion 3b formed on the upper portion thereof and a small diameter portion 3c formed below the lower portion 3a. The orifice 7 penetrates in the left and right direction through the center of the rod 3 in the large diameter portion 3b. Are formed in two upper and lower stages in parallel. Both orifices 7 communicate with the oil passage 6 at the center of the rod 3. The first valve means 10 and a piston 4 below the first valve means 10 are externally fitted to the small-diameter portion 3c.
It is fixed by engaging a screw formed on the inner peripheral surface of the cylindrical piston retainer 5. The first valve means 1
The zero valve element 10a is urged downward by a conical spring 10b. The piston retainer 5 is provided with a second valve means 11 on a side wall thereof and a third valve means 12 on an opening of a bottom wall. The valve body 11a of the second valve means 11 is urged upward by a spring 11b, and the valve body 12a of the third valve means 12 is urged downward by a conical spring 12b.

A rotary valve 8 is provided above the oil passage 6.
(Flow rate switching means) is disposed rotatably. The rotary valve 8 is formed with a pair of left and right communication holes 8a in two vertical stages. By rotating the rotary valve 8 by a predetermined angle, the upper and lower communication holes 8a are connected to the orifice 7 opened in the rod 3. It is now matching. When the upper and lower communication holes 8a are aligned with the upper and lower orifices 7 by rotating the rotary valve 8,
The orifice 7 communicates with the oil passage 6 (see FIG. 1), and furthermore, the rotary valve 8 is rotated from this state, and when the side wall (non-porous portion) matches the orifice 7, the orifice 7 and the oil passage 6 are connected. Is interrupted (see FIG. 3).

A control rod 13 extends upward from the upper end surface of the rotary valve 8 as shown in FIG.
As shown in the figure, the rod 3 protrudes above the rod 3 through a long hole 3d extending upward from the oil passage 6 in the rod 3.
A sector gear 14 is fixed to the upper end of the control rod 13, and the sector gear 14 meshes with a pinion 17 fixed to an output shaft 16 of a motor 15. Reference numeral 18 denotes a mounting plate provided on the motor 15, which is bolted to the vehicle body 21.

As shown in FIG. 5, a mode select switch (instruction) for turning on / off the current supply to the motor 15 and switching the rotary valve 8 between the normal mode and the sports mode is provided on the control panel 27 of the vehicle body 21 as shown in FIG. Means) 24 and a mode indicator lamp 25 are arranged.

In the above configuration, the control panel 2
When the mode select switch 24 is set to the normal mode by operating the mode select switch 7, the motor 15 is operated, and the rotary valve 8 is rotated by a predetermined angle via its output shaft 16, pinion 17, sector gear 14 and control rod 13, and As shown in FIG. 1, a communication hole 8 a formed in the rotary valve 8 matches the orifice 7. As a result, the oil can pass through the orifice 7 and the oil passage 6, so that the large-diameter through hole 4
b, the oil below the piston 4 in the cylinder chamber 9 flows into the upper side of the piston 4 through the orifice 7 and the oil passage 6,
Rod 3 descends fast. When descending a predetermined distance, the vehicle body 2
1 is received by the suspension spring 23 and is slightly lowered as it is before being pushed up by the spring force of the suspension spring 23. In this case, as shown in FIG. 2, the oil mainly passes through the small-diameter through hole 4 a of the piston 4, the orifice 7, and the oil passage 6, and the oil in the space below the piston 4 in the cylinder chamber 9 becomes the oil above the piston 4. Flow into space. As described above, when the mode select switch 24 is set to the normal mode, the flow of the oil is improved, and as a result, the contribution of the suspension spring 23 is increased, and the damping is reduced.

Next, when the sport mode is set by operating the mode select switch 24, the side wall of the rotary valve 8 matches the orifice 7, as shown in FIG. As a result, the space between the orifice 7 and the oil passage 6 is blocked by the side wall of the rotary valve 8, so that the oil does not pass through the orifice 7 and the oil passage 6, and the cylinder mainly passes through only the large-diameter through hole 4 b of the piston 4. Oil in the space below the piston 4 in the chamber 9 flows into the space above the piston 4, and the rod 3 descends slowly. When the rod 3 is lifted up by the spring force of the suspension spring 23, the oil mainly passes only through the small-diameter through hole 4a of the piston 4 as shown in FIG. As described above, when the mode select switch 24 is set to the sport mode, the flow of oil is reduced, and as a result, the contribution of the suspension spring 23 is reduced and the damping is increased. Thus, by changing the damping force of the shock absorber 1, it is possible to intentionally apply vibration to the vehicle body 21. Therefore, if the driver feels a little drowsy, he operates the mode select switch 24 to change the vehicle body 2
1 can be vibrated, whereby the seat 26 can be vibrated, and the driver does not sneak, so that accidents due to sneaking can be completely eliminated. Further, since the vibration is given to the vehicle body 21, there is an advantage that the driver can feel the vibration on the whole body.

In the above embodiment, the maximum seat load is 100 kg.
Thus, vertical vibration having a frequency of 20 Hz and an amplitude of 15 mm can be applied to the seat 1.

In the above embodiment, the amount of oil flowing through the orifice 7 and the oil passage 6 formed at the lower end 3a of the rod 3 is switched by the rotary valve 8 to generate vibration. A U-shaped communication pipe with a flow rate switching valve is provided outside the casing 2, and an upper opening of the communication pipe communicates with a space above the piston 4 in the cylinder chamber 9 and a lower opening is formed below the piston 4. Vibration may be generated by communicating with the space and switching the amount of oil flowing through the communication pipe by the flow rate switching valve.
In this case, the switching operation of the flow rate switching valve can be performed by operating an instruction switch provided on a control panel or the like.

[0017]

As described above, according to the seat vibration device of the present invention, vibration can be intentionally applied to the body of the automobile by changing the damping force of the shock absorber. That is, a shock absorber attached to the body of an automobile is provided with flow rate switching means for switching the amount of fluid flowing between the upper and lower spaces of the cylinder chamber, and instruction means for instructing the flow rate switching means to perform a switching operation. By operating the means to switch the fluid amount, the lowering speed of the rod moving up and down the cylinder chamber can be changed to forcibly apply vibration to the vehicle body fixed to the rod. For this reason, if the driver feels a little drowsy, by operating the above-mentioned instructing means to vibrate the vehicle body, the driver does not sneeze, and the accident caused by the sneaky driving can be completely eliminated. In addition, since the vibration is applied to the seat by forcibly applying vibration to the vehicle body itself, the driver can feel the above-mentioned vibration in the whole body, and is excellent in the effect of preventing sneezing driving.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a shock absorber used in an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a shock absorber set in a normal mode.

FIG. 3 is a cross-sectional view of the shock absorber set in a sport mode.

FIG. 4 is a sectional view of the shock absorber set in a sport mode.

FIG. 5 is a schematic explanatory view of an automobile.

FIG. 6 is a configuration diagram showing a connecting means between a motor and a shock absorber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shock absorber 3 Rod 3a Lower end 4 Piston 4a, 4b Through hole 8 Rotary valve 9 Cylinder chamber

Claims (1)

(57) [Claims] 1. A rod which is attached to the body of an automobile and extends vertically, a cylinder chamber in which the lower end of the rod is vertically movable, and the movement of the rod which is fixed to the lower end of the rod. A shock absorber having a piston that slides up and down while being in sliding contact with the inner peripheral surface of the cylinder chamber, and a communication path that communicates the upper and lower spaces partitioned by the piston of the cylinder chamber. A seat vibration device comprising: a flow rate switching means for switching an amount of flowing fluid; and an instruction means for instructing the flow rate switching means to perform a switching operation.