JP2004161165A - Headrest device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headrest device enabling the tilt angle of the headrest body to be changed by simple operation. <P>SOLUTION: The headrest device comprises the headrest body 2 disposed in a specified position on a vehicle seat 10, tiltable arms 4a, 4b extending downward from the headrest body 2, a rotatable shaft 5 disposed almost orthogonally to the tiltable arms 4a, 4b and close to their lower ends, a driving motor 3 that can rotate reversibly, a controller 12 for controlling the rotational drive by the driving motor 3, and a means for transmitting the rotational output from the driving motor 3 to the rotatable shaft 5. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a headrest mounted on an upper portion of a seat of a vehicle, and more particularly to a technique for appropriately setting a tilt angle of a headrest according to a driver's preference.
[0002]
[Prior art]
Generally, a seat, which is mounted on a vehicle and on which an occupant sits, has a headrest mounted on an upper portion thereof, and the occupant can lean his / her head on the headrest. As such a headrest, for example, a headrest described in Japanese Patent Application Laid-Open No. H11-180197 (hereinafter referred to as Patent Document 1) is known. It can be moved up and down with respect to the passenger seat to match the occupant's body shape.
[0003]
[Patent Document 1]
JP-A-11-180197
[Problems to be solved by the invention]
However, in the technology described in Patent Literature 1 described above, although the headrest can be moved in the vertical direction and set to a position that matches the occupant's body shape, there is a problem that the inclination angle cannot be set. .
[0005]
The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a headrest device capable of appropriately setting a tilt angle of a headrest according to an occupant's preference. It is in.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present application is directed to a headrest body provided at a predetermined position of a vehicle seat, a tilting arm implanted downward from the headrest body, Turning drive means for turning the tilting arm about a predetermined portion of the arm as a fulcrum.
[0007]
Further, the invention according to claim 2 provides a headrest main body provided at a predetermined position of the vehicle seat, a tilting arm implanted downward from the headrest main body, and a vicinity of a lower end portion of the tilting arm. A rotating shaft arranged substantially orthogonal to the tilt arm, a reversibly rotatable drive motor, a controller for controlling the rotational drive of the drive motor, and a rotational output of the drive motor. And a power transmission means for transmitting the power to the turning shaft.
[0008]
According to a third aspect of the present invention, the drive motor is disposed near a seat of a vehicle seat, and the power transmission means transmits the rotational power of the drive motor to the upright shaft. A worm formed near the upper end of the shaft, and a worm wheel attached to the turning shaft and meshing with the worm are provided.
[0009]
According to a fourth aspect of the present invention, the controller sets a tilt direction of the headrest main body to switch on and off, and drives the drive motor in accordance with an operation input of the reversible switch. A control means for outputting a signal, and a switch circuit for switching on and off and switching a rotation direction of the drive motor in accordance with the drive signal are provided.
[0010]
According to a fifth aspect of the present invention, the controller further includes storage means for storing an inclination angle of the headrest, and an automatic inclination angle selection switch, wherein the control means outputs an automatic setting signal by the automatic inclination angle selection switch. When input, the drive motor is driven so as to have the inclination angle stored in the storage means.
[0011]
In the invention according to claim 6, the storage means can store a plurality of inclination angles, and the automatic inclination angle selection switch can select a plurality of inclination angles stored in the storage means. Features.
[0012]
The invention according to claim 7 is characterized in that the controller tilts the headrest main body in conjunction with a driving position system mounted on the vehicle.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a main part showing a configuration of a headrest device according to an embodiment of the present invention. As shown in FIG. 1, the headrest device 1 includes a headrest body 2 provided on an upper portion of a vehicle seat 10, and a tilting arm 4 a, which is implanted downward from a lower surface of both ends of the headrest body 2. 4b, and a turning shaft 5 arranged so as to connect between lower ends of the tilting arms 4a, 4b.
[0014]
A drive motor 3 is disposed on a backrest 10 b near the seating portion 10 a of the vehicle seat 10 and serves as a power source for tilting the headrest body 2, and a gear provided on an output shaft of the drive motor 3. The vehicle includes a box 6 and an upright shaft 7 that is provided upright along the backrest 10 b of the vehicle seat 10.
[0015]
The upright shaft 7 has a lower end connected to the gear box 6, and rotational power of the driving motor 3 is transmitted to the upright shaft 7 via the gear box 6. A worm 8 is attached to the upper end of the standing shaft 7, and a worm wheel 9 is provided on the turning shaft 5. Since the worm 8 and the worm wheel 9 are meshed with each other, when the driving motor 3 is driven to rotate, the turning shaft 5 is driven to rotate, so that the headrest main body 2 can be tilted.
[0016]
The driving motor 3, the gear box 6, the upright shaft 7, the worm 8, the worm wheel 9, and the turning shaft 5 constitute the turning drive means described in the claims. The shaft 7, the worm 8, and the worm wheel 9 constitute the power transmission means described in the claims.
[0017]
FIG. 2 is a circuit diagram illustrating a configuration of a controller that controls the driving motor 3. As shown in the figure, the controller 12 applies the DC voltage output from the battery power supply 11 mounted on the vehicle to the drive motor 3 by appropriately inverting the polarity and applying the DC voltage to the drive motor 3. The control unit 13 performs reversible rotation control, and includes a control unit 13 serving as a control center, a reversible switch 14 for operating the inclination angle of the headrest body 2, a memory 15, a selection switch (inclination angle automatic selection switch). ) 16 and two relays R1 and R2.
[0018]
The memory 15 stores and stores the tilt angles of the headrest main body 2, and can store a plurality of tilt angles so as to be able to handle a plurality of occupants. The selection switch 16 is a switch for selecting tilt angle data stored in the memory 15.
[0019]
The contact a1 of the relay R1 and the contact a2 of the relay R2 are respectively connected to the positive terminal of the battery power supply 11, and the contacts b1 and b2 of each of the relays R1 and R2 are connected to the ground. The contact c1 of the relay R1 is connected to one input terminal of the driving motor 3, and the contact c2 of the relay R2 is connected to the other input terminal of the driving motor 3.
[0020]
Next, the operation of the present embodiment configured as described above will be described. When the occupant sits on the vehicle seat 10 and operates the reversible switch 14 shown in FIG. 2, the drive motor 3 is driven to rotate, and the headrest body 2 tilts.
[0021]
Now, when the reversible switch 14 is turned to the “front” contact side, the contact of the relay R1 switches from b1 to a1. Accordingly, the positive electrode of the battery power supply 11 is guided to the ground through the route of the contact a1, the contact c1, the driving motor M3, the contact c2 of the relay R2, and the contact b2. As a result, a current flows through the driving motor 3 in the direction indicated by I1, and the driving motor 3 rotates in the first direction.
[0022]
This rotational power is transmitted to the turning shaft 9 via the gear box 6, the upright shaft 7, the worm 8, and the worm wheel 9 shown in FIG. 1, and the turning shaft 9 is driven to rotate. That is, the two tilting arms 4a and 4b pivot forward, and the headrest body 2 tilts forward. As a result, as shown in FIG. 3, the headrest main body 2 tilts from the reference position P1 to the position P2.
[0023]
On the other hand, when the reversible switch 14 shown in FIG. 2 is turned to the “rear” contact side, the contact of the relay R2 switches from b2 to a2. Therefore, the positive electrode of the battery power supply 11 is guided to the ground through the route of the contact a2, the contact c2, the driving motor M3, the contact c1 of the relay R1, and the contact b1. As a result, a current flows through the driving motor 3 in the direction indicated by I2, and the driving motor 3 rotates in the second direction.
[0024]
Then, in the same procedure as described above, this rotational power is transmitted to the turning shaft 5, and the two tilting arms 4a and 4b are turned backward, and the headrest body 2 is tilted backward. Become. That is, as shown in FIG. 3, the headrest main body 2 tilts from the position P1 to the position P3.
[0025]
In this way, by operating the reversible switch 14, the headrest 2 can be automatically tilted forward or backward.
[0026]
Further, when the occupant is seated on the vehicle seat 10 and presses the selection switch 16 in a state where the inclination angle of the headrest main body 2 is set to a desired angle, the angular position is stored in the memory 15.
[0027]
Next, when the occupant sits on the vehicle seat 10 and presses the selection switch 16 next time, the relays R1 and R2 are automatically switched under the control of the control unit 13 so that the inclination angle stored in the memory 15 is obtained. Then, the headrest main body 2 can be moved.
[0028]
In this manner, in the vehicle headrest device 1 according to the present embodiment, the tilt angle of the headrest main body 2 can be appropriately changed by operating the reversible switch 14, so that the headrest device 2 is set to a position suitable for the occupant's preference. be able to. As a result, the clearance between the head of the occupant and the headrest main body 2 can be adjusted optimally, and the influence on the head during emergency braking or the like can be reduced.
[0029]
If the inclination angle of the headrest main body 2 is stored and stored in the memory 15 in advance, the next time the user gets on the vehicle, the selection switch 16 is pressed, so that the headrest main body 2 automatically moves to the stored angle. Therefore, the angle of the headrest main body 2 can be set extremely easily.
[0030]
Furthermore, the memory 15 may be configured to set a plurality of angles of the headrest main body 2. With such a configuration, even when different occupants are seated on the vehicle seat 10, the angle can be set according to each occupant, so that operability can be significantly improved.
[0031]
In addition, by linking the above-described controller with the driving positioning system, the angle of the headrest main body 2 can be adjusted to a desired position in conjunction with other in-vehicle devices.
[0032]
As described above, the headrest device 1 of the present invention has been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each part may be replaced with any configuration having the same function. Can be.
[0033]
For example, the mounting position of the drive motor 3 is not limited to the vicinity of the seating portion 10a of the vehicle seat 10, but may be mounted at another suitable place.
[0034]
Further, the headrest device 1 can be attached to any of a driver seat, a passenger seat, and a rear seat in the vehicle.
[0035]
Further, in the present embodiment, as shown in FIG. 2, the rotation direction of the drive motor 3 is switched by the contact type relays R1 and R2, but the present invention is not limited to the relay. For example, it is also possible to use a non-contact switch such as a MOS-FET.
[0036]
【The invention's effect】
As described above, in the headrest device according to the present invention, the headrest body can be tilted by rotating the driving motor by operating the switch, so that the occupant can easily move the headrest body to the desired position with a very simple operation. Angle can be set.
[0037]
Further, since the clearance between the head of the occupant and the headrest body can be adjusted optimally, the influence on the head during emergency braking or the like can be reduced.
[0038]
Furthermore, if the inclination angle of the headrest body is stored and stored in the memory, the desired inclination angle can be easily set by a switch operation the next time the user gets on the vehicle, so that the desired angle can be set quickly and appropriately.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an embodiment of a headrest device according to the present invention.
FIG. 2 is a circuit configuration diagram of a headrest device according to an embodiment of the present invention.
FIG. 3 is an explanatory view showing a state where the headrest body is tilted forward and backward.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Headrest device 2 Headrest main body 3 Driving motors 4a, 4b Tilting arm 5 Rotating shaft 6 Gear box 7 Standing shaft 8 Warm 9 Warm wheel 10 Vehicle seat 10a Seating portion 10b Backrest portion 11 Battery power supply 12 Controller 13 Control unit 14 reversible switch 15 memory 16 selection switch (inclination angle automatic selection switch)
R1, R2 relay

Claims (7)

A headrest body provided at a predetermined position of the vehicle seat,
A tilting arm implanted downward from the headrest body,
Turning drive means for turning the tilting arm around a predetermined portion of the tilting arm as a fulcrum,
A seat belt device for a vehicle, comprising: A headrest body provided at a predetermined position of the vehicle seat,
A tilting arm implanted downward from the headrest body,
In the vicinity of the lower end of the tilting arm, a turning shaft arranged substantially orthogonal to the tilting arm,
A drive motor rotatable reversibly,
A controller for controlling the rotational drive of the drive motor,
Power transmission means for transmitting the rotation output of the drive motor to the turning shaft;
A headrest device for a vehicle, comprising: The drive motor is disposed near a seating portion of the vehicle seat,
The power transmission means, an upright shaft for transmitting the rotational power of the drive motor, a worm formed near the upper end of the upright shaft,
A worm wheel attached to the turning shaft and meshing with the worm;
The vehicle headrest device according to claim 2, comprising: The controller is a reversible switch that sets a tilt direction of the headrest main body and switches on and off,
Control means for outputting a drive signal of the drive motor according to an operation input of the reversible switch;
The switch circuit according to claim 2, further comprising: a switch circuit configured to switch on / off and switch a rotation direction of the drive motor in accordance with the drive signal. Headrest device for vehicles. The controller further includes storage means for storing the tilt angle of the headrest, and an automatic tilt angle selection switch. 5. The headrest device for a vehicle according to claim 4, wherein the driving motor is driven so as to have the inclination angle stored in the means. 6. The storage device according to claim 5, wherein the storage unit is capable of storing a plurality of inclination angles, and the automatic inclination angle selection switch is capable of selecting a plurality of inclination angles stored in the storage unit. Headrest device for vehicles. The headrest device for a vehicle according to any one of claims 3 to 6, wherein the controller tilts the headrest body in conjunction with a driving position system mounted on the vehicle.

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