JPH10258655A - Dozing drive preventive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent drowsiness, to improve durability and to improve installation strength by arranging a vibration means in a head rest part of a head rest to be installed on a seat upper part of a vehicle and fixing it on a support part and vibrating the head rest by the vibration means. SOLUTION: A head rest 1 to be fixed on a driver's seat upper end of a vehicle free to connect and disconnect is furnished with a vibration means 9 fixed on a support plate 7 in a recessed part of a head rest part 6. A direct current motor 11, a pair of left and right unbalance weights 17, etc., are fixed on the vibration means 9 free to connect and disconnect. Thereafter, when a driver feels a little of drowsiness, he drives the direct current motor 11 by pressing a START switch, the unbalance weights 17 are rotated and vibration is generated. Consequently, as the whole of the head rest 1 is vibrated, drowsiness of the driver is shaken off. Additionally, the direct current motor 11, a rotation axis body, etc., are fixed on the support plate 7, and installation strength of them on the support plate 7 is sufficient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing a sleepy driving which is used for a driving seat of a vehicle such as an automobile for preventing the sleepy 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 sneeze, it senses that the driver is making a sneeze due to the inclination of the head, thereby activating the wake-up means to wake the driver. it can.

[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, Sleepiness can cause loss of concentration and an accident. In view of the above, Japanese Patent Application Laid-Open No. H11-117247 discloses an apparatus in which a driver's head is always stimulated during driving (or at an arbitrary time) to clarify the driver's consciousness and thereby prevent a sneaking operation.
No. 1993. As shown in FIG. 6, a vibration body 34 is provided inside a cushion elastic body 32 of a headrest 31 attached to an upper end of a backrest (not shown) of an automobile seat. This vibrator 34
Is a motor 35 having a weight 36 attached to an output shaft 35a.
And a case 37 for accommodating the motor 35. The base 35 b of the motor 35 is bolted to a boss 38 projecting from a side wall of the case 37. On the other hand, a mounting plate 33 for receiving the cushion elastic body 32
A channel-shaped support plate 41 is fixed on the upper surface of the case, a lower end 40a of the rubber support 40 is fitted into a mounting hole 41a formed in the support plate 41, and an upper end 40b of the rubber support 40 is attached to the case. The lower hole 37 is fitted in a mounting hole 39 formed in the lower wall. In the figure, reference numeral 42 denotes a support shaft projecting from the lower surface of the mounting plate 33, which is detachably inserted into an insertion hole at the upper end of the backrest.

However, in this case, the vibrating body 34
A material that can withstand the weight of the vibrating body 34 must be used as a material of the cushion elastic body 32 and the rubber support 40 that support the above, and there is a problem that selection of this material is restricted. In addition, since the cushion elastic body 32 and the rubber support 40 are weak in strength, the fitting portions of the upper and lower ends 40a and 40b of the cushion elastic body 32 and the rubber support 40 are damaged early by the vibration of the vibrator 34. However, there is also a problem that the supporting force of the cushion elastic body 32 and the rubber support body 40 is weakened. Further, when the headrest 31 is inclined backward, the cushion elastic body 3
2, a downward external force acts on the cushion elastic body 3.
The mounting strength (for example, adhesive strength) between the lower end face of the mounting plate 33 and the upper surface of the mounting plate 33 must be set to a strength that can withstand the above-mentioned external force, and there is a problem that the strength needs to be increased accordingly. .

[0005] The present invention has been made in view of such circumstances, and can effectively prevent sleepless driving.
In addition, there is no restriction on the selection of the cushioning material used for the headrest portion, and there is provided a durable operation prevention device which is excellent in durability and does not need to increase the mounting strength between the headrest portion and the support portion. With that purpose.

[0006]

In order to achieve the above object, an apparatus for preventing toying driving according to the present invention is a headrest mounted on an upper portion of a vehicle seat, comprising a headrest portion and a support for receiving the headrest portion. A vibration means is arranged in the headrest portion of the headrest comprising the headrest portion, the vibration means is fixed to the support portion, and the headrest is vibrated by the vibration means so as to prevent drowsiness. .

In other words, the apparatus for preventing toying driving according to the present invention is provided with a vibration means in the headrest portion of the headrest including the headrest portion and the support portion for receiving the headrest portion, and supports the vibration means. It is fixed to the receiving part. Therefore, when the driver feels a little drowsy, the headrest can be caused to vibrate by operating the vibration means, and this vibration is transmitted to the driver's head, and the drowsiness of the driver is reduced. I wake up and do not sleep. In addition, in the present invention, since the vibration means is fixed to the support portion, it is not necessary to use a material that can withstand the weight of the vibration means as the cushion material for the headrest portion, and there is a particular restriction on the selection of the cushion material. Absent. In addition, since the support portion is much stronger than the cushioning material of the headrest portion, the support portion is not damaged by the vibration of the vibration means, and is excellent in durability. In addition, even if the headrest is tilted backward, the vibration means is fixed to the support, so a large downward external force does not act on the headrest, increasing the mounting strength between the headrest and the support. No need to do. In the present invention,
"Vibration to prevent drowsiness" means that the frequency is 5
〜50 times / minute (1 time means one reciprocation of back and forth in the case of vibration in the front-back direction), preferably 8 to 42 times / minute, and a vibration width of 2 to 25 mm, preferably Means that a vibration of 3 to 15 mm is applied. Further, in the present invention, the vehicle seat includes a driving seat of various automobiles and a seat of an operation room such as a crane truck.

Further, in the present invention, the support portion supports the headrest portion, and leg portions projecting from a lower surface of the support plate and attaching the support plate to a backrest portion of a seat. When the vibration means is attached to the upper surface of the support plate, a commonly used support portion can be used, and applied to various types of headrests. be able to.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of an apparatus for preventing toying operation according to the present invention. In the figure, reference numeral 1 denotes a headrest, which is detachably fixed to an upper end of a backrest 4 of a driver's seat 3 of an automobile 2 (see FIG. 3). The headrest 1 includes a headrest 6 (shown by a two-dot chain line in the drawing) having a recess (not shown) formed at the lower end thereof, and a metal support for supporting the headrest 6. A plate 7, two metal pipe legs 8 (see FIG. 4) projecting from the lower surface of the support plate 7 and detachably attached to the upper end of the backrest 4, and the headrest 6. And vibrating means 9 housed in the recess and mounted on the upper surface of the support plate 7. The legs 8 are provided with positioning / fixing means (not shown) capable of switching the mounting position to the backrest 4 in a plurality of stages. In FIG. 3, 5 is a driver's seat 3.
Is the seating section.

As shown in FIG. 2, the vibrating means 9 includes a DC motor 11 and a rotating shaft 11 of the DC motor 11.
and a rotating shaft 13 connected to the DC motor 11 via a coupling (connection member) 12, and L-shaped fixing plates 14 provided on both right and left sides of the DC motor 11 are provided as support plates for the headrest 1. The bolt 15 is fixed to the upper surface of 7. The rotating shaft body 13 is rotatably supported by a pair of left and right pillow bearings 16 arranged at a predetermined interval, and the left and right pillow bearings 16 are located between the pillow bearings 16. A pair of unbalanced weights 17 are detachably fixed. These two unbalance weights 17 are formed in a plate-like body, and as shown in FIG. 1, a substantially half-arc portion formed concentrically with the rotating shaft 11a of the DC motor 11, It comprises a triangular portion protruding from the flat surface of the two arc-shaped portions. The rotating shaft 11a and the rotating shaft body 13 of the DC motor 11 are in a horizontal direction,
In addition, it faces the driver's seat 3 in the left-right direction (in the direction orthogonal to the traveling direction of the car 2). In the figure, 1
Reference numeral 8 denotes a fixing portion for fixing the pillow bearing 16 to the bolt 19, and is fixed to the upper surface of the support plate 7 by welding or the like.

The DC motor 11 is electrically connected to a battery 21 (see FIG. 3) provided at the front of the vehicle body of the automobile 2. In addition, a control box (not shown) is provided on the side of the driver's seat 3.
START to start (ON) the DC motor 11
There are provided a switch, a STOP switch for stopping (turning off) the DC motor 11, a strength adjustment switch for adjusting the strength of vibration, and the like. This strength adjustment switch is set to “weak position”,
It is configured to be switched to three positions of a "middle position" and a "strong position", and in each position, there are several vibration cycles (in this embodiment, three times) of vibrating for 20 seconds and then resting for 10 seconds. Repeated. In this embodiment, when the strength adjustment switch is in the “weak position”, the rotation speed of the DC motor 11 is set to 500 times / minute, and in the “middle position”.
Is set to 1500 times / minute, and to "strong position", set to 2500 times / minute. When the frequency is calculated from the rotation speed, the frequency is 8.3 in the case of the “weak position”.
Times / minute, 25.0 times / minute for the “medium position”, and 41.7 times / minute for the “strong position”. Also,
When measuring the vibration width from "weak position" to "strong position",
3 to 15 mm. In FIG. 3, reference numeral 22 denotes an instrument panel to which meters are attached, and reference numeral 23 denotes a handle.

In the above embodiment, when the driver feels a little drowsy, he presses the START switch of the control box to turn on the DC motor 11. This allows
The DC motor 11 is driven, and the driving of the DC motor 11 causes the rotating shaft 11a to rotate, and the rotating shaft 13 connected thereto to rotate. The unbalanced weights 17 attached to the rotating shaft 13 are also rotated. Rotate and vibrate (this vibration, as described above,
This is a periodic vibration in which a pause of two seconds is alternately repeated three times). Then, this vibration is transmitted to the support plate 7 via the both fixed plates 14, both pillow bearings 16, both fixed portions 18, and the like. As a result, the support plate 7 vibrates,
Since the headrest portion 6 also vibrates and the entire headrest 1 vibrates, this vibration prevents the driver leaning the head on the headrest portion 6 from becoming sleepy and does not sneeze.

As described above, according to the above embodiment, the rotating shaft 13 connected to the rotating shaft 11a of the DC motor 11 is used.
The vibration generated by the unbalanced weights 17 is transmitted to the driver's head, so that the driver does not sneeze, and the accident due to the sneaking operation can be completely eliminated. In addition, since the DC motor 11, the rotating shaft 13 and the like are fixed to the support plate 7, almost no load acts on the cushioning material of the headrest portion 6, and the selection of the cushioning material is particularly restricted. In addition, the mounting strength between the headrest 6 and the support plate 7 is not increased. Further, the strength of the support plate 7 is high, and the DC motor 11
The support plate 7 is not damaged by the vibration generated by the above.

FIG. 5 shows another embodiment of the present invention. In this embodiment, a rod-shaped torsion coil 25 is used in place of the leg 8 in the above embodiment, and the upper ends of both torsion coils 25 are internally fitted into a cylindrical portion 26 projecting from the lower surface of the support plate 7. The lower end is internally fitted and fixed to a cylindrical portion (not shown) attached to a support portion of the headrest 1 (for supporting the headrest 6). Other parts are the same as those of the above-described embodiment, and the same parts are denoted by the same reference numerals. In this case, the same operation and effect as those of the above-described embodiment can be obtained, and further, there is an advantage that the vibration generated by the rotation of the DC motor 11 is amplified by the torsion coil 25, and the vibration effect is increased.

In the above-described embodiment, a combination of the DC motor 11 and the rotating shaft 13 is used as the vibration means. However, the present invention is not limited to this, and a DC vibration motor may be used. Alternatively, other various vibration means may be used. Further, in the above-described embodiment, the DC motor 11 and the like are fixed to the support plate 7 which also serves as a means for attaching to the backrest 4, but a supporting part ( (Which only supports the headrest 6). In the above embodiment, the vibration means 9 is fixed upward, but may be fixed laterally or downward as long as it is accommodated in the headrest 6.

In the above embodiment, a START switch is arranged in the control box, and when the driver feels a little drowsy, the START switch is pressed to activate the DC motor 1.
1 is turned on, but the START
A timer may be provided instead of the switch. In this case, the DC motor 11 can be turned on when the set time of the timer (for example, 10 minutes) elapses by pressing the switch of the timer at the time of starting the car or the like. When a predetermined time (for example, 5 minutes) elapses after the operation, the operation of the DC motor 11 can be automatically stopped.
Such a timer is used for a predetermined time after the vehicle starts moving (for example,
This is convenient when it is known from experience or the like that a person feels drowsy after about 10 minutes have elapsed. When a timer is used, a beeping sound is emitted from the microphone provided in the control box before the set time of the timer (time for automatically turning on the DC motor 11) (for example, about 5 seconds before). It is preferable that a warning sound such as a loud intermittent sound or the like be played to let the driver predict the ON operation of the DC motor 11. Also, a switch for stopping the operation of the DC motor 11 is provided together with the timer, and the operation of the DC motor 11 is not stopped by the timer.
You may make it manually possible. Also, in the above embodiment, the STAR that starts the DC motor 11 is
Although a T switch and a STOP switch for STOP are separately provided, the present invention is not limited to this, and START (ON) and STOP (OFF) of the DC motor 11 are provided.
An ON / OFF switch that can perform both of the above may be provided.
In the above embodiment, the control box is connected to the driver's seat 3.
, But is not limited to this.
A switch, a timer, and the like may be arranged on the instrument panel 22 on the front side of the driver's seat 3, and the control unit may be housed inside the instrument panel 22.

The shape of the unbalance weight 17 is not particularly limited, and may be any shape as long as it can be rotated to generate vibration. In the above embodiment, the unbalanced weight 17 is attached to the rotating shaft 13 connected to the rotating shaft 11a of the DC motor 11, but the present invention is not limited to this. May be attached.

[0019]

As described above, according to the apparatus for preventing a toying operation of the present invention, the toying operation can be effectively prevented. In addition, in the present invention, since the vibration means is fixed to the support portion, it is not necessary to use a material that can withstand the weight of the vibration means as the cushion material for the headrest portion, and there is a particular restriction on the selection of the cushion material. Absent. In addition, since the support portion is much stronger than the cushioning material of the headrest portion, the support portion is not damaged by the vibration of the vibration means, and is excellent in durability. In addition, even if the headrest is tilted backward, the vibration means is fixed to the support, so a large downward external force does not act on the headrest, increasing the mounting strength between the headrest and the support. No need to do. In the present invention, the support portion includes a support plate that supports the headrest portion, and a leg portion that protrudes from a lower surface of the support plate and attaches the support plate to a backrest portion of a seat. When the vibration means is attached to the upper surface of the support plate, a commonly used support portion can be used and can be applied to various types of headrests. .

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention.

FIG. 2 is a side view of the vibration means.

FIG. 3 is an explanatory diagram of an automobile.

FIG. 4 is an explanatory diagram showing an attached state of a headrest.

FIG. 5 is a schematic perspective view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Headrest 6 Head rest part 7 Support plate 11 DC motor 17 Unbalance weight

Claims (4)

[Claims] 1. A headrest attached to an upper part of a seat of a vehicle, wherein a vibration means is disposed in the headrest portion of the headrest including a headrest portion and a support portion for receiving the headrest portion, and the vibration means is provided. A sleep driving prevention device, wherein the device is fixed to a support portion and the headrest is vibrated by a vibration means to prevent sleepiness. 2. The support portion includes a support plate for supporting a headrest portion, and a leg portion projecting from a lower surface of the support plate and attaching the support plate to a backrest portion of a seat. 2. The apparatus according to claim 1, wherein a vibration means is attached to an upper surface of said support plate. 3. The apparatus according to claim 1, wherein said vibration means is a vibration motor. 4. The apparatus according to claim 1, wherein the vibrating means is a motor and an unbalanced weight attached to a rotating shaft of the motor.