JP2002067755A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat for a vehicle capable of securely shielding sunbeam radiation to a seat surface and a steering wheel even when sunbeam is radiated from a front surface of the vehicle. SOLUTION: When there is a lot of sunbeam radiation into a cabin, a backrest part 23 of the seat 21 falls forward by a control device 26 till a head rest 27 at an upper part of the backrest part 23 is applied to an upper surface end part of an instrument panel 24 to be matched with it, thereby invasion of heat radiation to the seat surface can be securely shielded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat and, more particularly, to a vehicle seat capable of preventing a surface of a seat and a steering wheel from being heated by sunlight.

[0002]

2. Description of the Related Art If a vehicle is parked for a long time in the sunshine where the sunshine is strong, such as in summer, the surface of the seat and the steering wheel become hot due to the sunshine, which makes it very uncomfortable when the occupant next gets into the vehicle. Is often experienced.

For this reason, conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 10-211837, the outside air sensor detects the temperature outside the vehicle compartment and the amount of solar radiation by a solar radiation sensor, and the control device controls the vehicle under predetermined conditions. There is known a device in which the backrest of a seat for use is controlled to be tilted so as to block solar radiation impinging on the seating portion and reduce a rise in surface temperature of the seating portion.

[0004] Further, the control device can also move the seating portion forward of the vehicle when the backrest portion is tilted to block the solar radiation hitting the steering wheel.

[0005]

In the above-mentioned conventional apparatus,
In order to block the sun on the seat surface and the steering only by tilting the seat back and moving the seat to the front of the vehicle, the solar radiation to the steering should be prevented especially when there is solar radiation from the front of the vehicle. It is difficult to block enough.

[0006] Further, since the backrest portion is controlled by detecting the outside air temperature and the amount of solar radiation, the backrest portion may fall down even if there is no solar radiation to the seating portion or the steering wheel, and the occupant gets on the vehicle again. In that case, it is complicated.

Accordingly, the present invention is to provide a vehicle seat that can reliably block sunlight on the seat surface and the steering even when sunlight is received from the front of the vehicle.

[0008]

According to the first aspect of the present invention, there is provided a seat provided in a vehicle interior having a seating portion and a backrest portion, and a control device for controlling the backrest portion to fall in the vehicle front-rear direction. The headrest provided on the upper part of the backrest or the upper part of the backrest, and the upper end of the instrument panel located in front of the backrest, when the backrest is tilted forward, It has a shape that abuts and almost matches, and when there is a lot of solar radiation into the vehicle interior, the control device lowers the backrest portion to the front of the vehicle, and the upper portion of the backrest portion or the headrest,
This is characterized in that the upper end of the instrument panel facing this is brought into contact with the upper end.

According to a second aspect of the present invention, the seat according to the first aspect is a driver's seat, and the control device controls the upper portion of the backrest or the headrest by controlling the backrest to fall forward of the vehicle. When the vehicle and the upper end of the instrument panel come into contact with each other, the steering can be controlled to move downward.

According to a third aspect of the present invention, there is provided a seat having a seating portion and a backrest provided in a vehicle interior, and a control device for controlling a front-rear position of the seat and a tilt angle and a steering angle of the backrest. When there is a lot of solar radiation in the vehicle interior, it detects the direction of the solar radiation to the vehicle, estimates the shadow position in the vehicle interior due to the front and rear positions of the seat and the fall angle of the backrest, and detects the solar radiation on the seat surface and steering. It is characterized in that each part of the seat and the steering are moved by an amount necessary for blocking.

In the invention of claim 4, claims 1 to 3 are provided.
The control device according to the above, after moving the control target movable portion by the control device to a position that blocks solar radiation, at a predetermined time such as sunset, the control target movable portion can be controlled to return to the original position where an occupant can ride. It is characterized by doing.

[0012]

According to the first aspect of the present invention, when there is a lot of sunshine in the vehicle interior, the backrest of the seat is tilted forward by the control device, and the upper part of the backrest or the headrest is instrumented. Since it is almost aligned by contacting the upper end of the panel, it is possible to surely block the penetration of solar radiation to the surface of the seat.

In addition, the normal position of the backrest portion is maintained when there is no solar radiation in the vehicle interior, so that the occupant does not have to be troublesome when boarding again.

According to the invention described in claim 2, according to claim 1,
In addition to the effects of the invention, even if the seat is a driver's seat, when there is a lot of solar radiation into the vehicle interior and the backrest is tilted forward, the steering is moved downward and the upper part of the backrest or Since the headrest properly abuts on the upper end of the instrument panel without interfering with the steering, even the solar radiation from the front of the vehicle can more reliably block the solar radiation to the steering wheel as well as the seat surface.

According to the third aspect of the present invention, the direction of solar radiation with respect to the vehicle is detected, the position of the front and rear of the seat and the manner in which the interior of the vehicle interior is shadowed due to the amount of tilting of the backrest are estimated, and the seat surface and the steering are controlled. Since the seat portions and the steering are moved by an amount necessary to block the solar radiation, the time required for the occupant to return to the seat position, the backrest position, and the steering position can be reduced.

According to the invention described in claim 4, according to claim 1 of the present invention,
In addition to the effects of the inventions of (1) to (3), after the control target movable portion is moved to a position where sunlight is blocked by the control device, the control target movable portion is returned to the original position where the occupant can get on at a predetermined time such as sunset. Because it is possible, after parking during the day, it is possible to get on quickly, such as when boarding at night.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail by taking a driver seat as an example.

In FIGS. 1 and 2, the seat 21 is connected to a seating portion 22 on which an occupant sits, and to a rear end of the seating portion 22 by a reclining mechanism 28 as a tilt angle adjusting means so as to be rotatable in the front-rear direction. And a backrest 23 on which the occupant rests.

The seat 21 is mounted on the vehicle body floor F so as to be adjustable in front and rear position by a seat slide mechanism 29 as front and rear position adjustment means.

A headrest 27 is mounted on the upper part of the backrest 23.
The upper end of the instrument panel 24 located in front of the backrest 23 is referred to as the front end of the backrest 23 and the forward movement control of the seat 21 by the control device 26 as described later. As shown, they are formed in such a shape that they come into contact with each other without any gap and are almost aligned.

A steering 25 is disposed on the instrument panel 24. The steering 25 is vertically swung about a rotation fulcrum P of the tilt mechanism by a tilt mechanism (not shown) as a vertical moving means. It is adjustable.

The reclining mechanism 28, the seat sliding mechanism 29, and the tilting mechanism (referred to as a turning fulcrum P for the sake of convenience in the figure) are all driven by, for example, a servo motor (not shown) as driving means, and each is operated by a switch operation. The drive is arbitrarily controlled, and is also automatically controlled by the control device 26.

That is, the backrest portion 23 is arbitrarily adjusted by the switch operation so that the back and forth tilt angle is arbitrarily adjusted. In addition, when it is determined that the surface temperature of the seating portion 22 or the steering wheel 25 increases due to solar radiation, the control device 26 automatically controls the backrest portion 23. The vehicle is knocked down.

The position of the seat 21 can be arbitrarily moved and adjusted by operating a switch. In addition, when it is determined that the surface temperature of the seating portion 22 or the steering 25 increases due to solar radiation, the control device 26 automatically controls the vehicle. Moved forward.

Further, the steering angle of the steering 25 can be arbitrarily moved up and down by operating a switch. In addition, when it is determined that the surface temperature of the steering 25 increases due to solar radiation, the control device 26 automatically lowers the head downward. Swung and moved.

The control device 26 is a well-known computer means. The control device 26 has a RAM for temporarily storing data, a ROM for storing a predetermined program, and the like, a timer function, date and time determination, and the sheet 21, Backrest part 2
3. It has a function of detecting each moving position of the steering 25.

The control device 26 includes, as input terminals, a solar radiation sensor 28 for detecting the amount of solar radiation entering the vehicle interior, a navigation 29 for detecting the direction in which the vehicle is facing, and an ignition switch ( I
G) 30 is connected.

Further, in addition to these as input terminals, the occupant sensor 31 and the door open / close switch 3
2 are connected.

The occupant sensor 31 determines whether or not the occupant is sitting on the seating portion 22. For example, the occupant sensor 31 is provided in the seating portion 22, and
2, the electric contact type is used in which the electric contact is turned on by the load of the occupant and turned off when the occupant is not seated on the seating portion 22.

The door opening / closing switch 32 is for detecting the opening / closing of a door (not shown) on the driver's seat side.

Next, the control contents of the control device 26 will be described with reference to the flowchart of FIG.

First, in step S110, when the detection value of the solar radiation sensor 28 is equal to or more than a predetermined value, that is, when the amount of solar radiation is large, the process proceeds to step S120.

If the value detected by the solar radiation sensor 28 is equal to or less than the predetermined value, it is determined that the temperature rise is small even if the solar radiation hits the seat surface or the steering 25, and the process proceeds to step S200 to move the positions of the seat 21 and the steering 25. Absent.

In step S120, the direction of the solar radiation to the vehicle is estimated from the information and the time of the navigation 29 which is the vehicle direction detecting means, and it is determined whether or not the solar radiation is applied to the seat surface and the steering wheel 25. If the solar radiation is applied, the process proceeds to step S130. move on.

On the other hand, if it is determined that solar radiation does not hit the surface of the seat or the steering wheel 25 due to solar radiation from the rear of the vehicle, the process proceeds to step S200, and the positions of the seat 21 and the steering wheel 25 are not moved.

In step S130, step S1 is performed.
From the direction of solar radiation into the cabin estimated at 20, the seat surface,
The required amount of each part of the seat and the required amount of movement of the steering 25 to block the solar radiation to the steering 25 are determined.

For example, when there is solar radiation from the front of the vehicle, the seat 21 is moved forward, and not only the backrest 23 is moved forward but also the steering wheel 25 is lowered.

At this time, since the headrest 27 on the upper part of the backrest 23 and the upper end of the instrument panel 24 are in contact with each other without any gap, as shown in FIG. 24 and the headrest 27 and the backrest 23 cover and cover the steering wheel 25, and at the same time, the seat surface, that is, the seat 21
The sun on the seating surface.

In the case where shadows can be formed on the seat seating surface and the steering 25 without greatly moving the seat 21 and the steering 25 depending on the direction of the solar radiation, the amount of operation of each part of the seat and the steering position required to block the solar radiation is determined. I do.

Next, the process proceeds to step S140 to start a timer.

Subsequently, the process proceeds to step S150, where it is determined whether or not the occupant sensor 31 is off, that is, whether or not the occupant is sitting on the seating portion 22.

If the decision result in the step S150 is YES,
That is, when it is determined that no occupant is sitting on the seating section 22, the process proceeds to step S160.

If the result of the determination in step S150 is N
If O, that is, if it is determined that the occupant is sitting on the seat portion 22, the process proceeds to step S200, and the positions of the seat 21 and the steering 25 are not moved.

In step S160, it is determined whether or not the ignition switch 30 is on. If the determination result is NO and the ignition switch 30 is on, the process proceeds to step S200, and the positions of the seat 21 and the steering 25 are not moved.

That is, when the determination in step S160 is NO, the ignition switch 30 is turned on, so that the occupant returns to the seating portion 22 in a short time even if the occupant is away from the seating portion 22. Assuming that the process proceeds to step S200, the seat 21 and the steering 25 are held at the normal position.

On the other hand, if the determination result in step S160 is Y
If the ignition switch 30 is turned off at ES, it is determined that the occupant has stopped the vehicle, and the process proceeds to step S170, where it is determined whether the door on the driver's seat side is closed by the door open / close switch 32.

If it is determined in step S170 that the door on the driver's seat side is open, it is assumed that the occupant is getting on or off the vehicle, and the flow advances to step S200 to hold the seat 21 and the steering 25 at the normal positions.

On the other hand, if it is determined in step S170 that the door on the driver's seat side is closed, the flow proceeds to step S180.

In step S180, the above-mentioned step S15
At 0 to S170, when the occupant is not sitting on the seat portion 22, the ignition switch 30 is off, and the door on the driver's seat side is closed for 1 minute or more,
The process proceeds to step S190, assuming that the occupant is completely separated from the vehicle and does not re-enter the vehicle in a short time.

In step S190, the aforementioned step S13 is executed.
By moving these parts based on the seat surface determined at 0, each part of the seat necessary to block the solar radiation to the steering 25, and the amount of operation of the steering 25,
The solar radiation to the seat surface and the steering 25 can be blocked, and the seat surface and the steering 25 can be prevented from becoming hot even when parked under the scorching sun.

Then, for example, when the door on the driver's seat side is opened and the process proceeds to step S200, the seat 21 and the steering 25 are returned to the normal positions.
Since the seat 21 and the steering 25 have moved only as much as necessary to block the solar radiation based on the estimation result of the direction of the solar radiation into the vehicle interior and how shadows are formed at 30, the passenger moves to a normal position where the occupant can get on. The return time is short and you can get on the train quickly.

In the above-described embodiment, the seat 21 and the steering 25 are returned to the normal position. In addition to the above-mentioned functions, the occupant is moved at a predetermined time such as sunset after the seat 21 and the steering 25 are moved to the position where the sunlight is blocked. If the vehicle returns to the seating position and the steering position where the vehicle can be ridden, the vehicle can be quickly boarded when the vehicle is parked during the day and then boarded at night.

Although the driver's seat has been described in the above embodiment, it is needless to say that the present invention can be applied to a passenger seat.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a side view for explaining the operation of the vehicle seat shown in FIG.

FIG. 3 is a flowchart illustrating an example of operation control of the vehicle seat shown in FIG. 1;

[Description of Signs] 21 Seat 22 Seating part 23 Backrest part 24 Instrument panel 25 Steering 26 Control device 27 Headrest 28 Solar radiation sensor 29 Vehicle direction detecting means (navigation) 30 Ignition switch 31 Occupant sensor 32 Door open / close switch

Claims (4)

[Claims] 1. A seat having a seating portion and a backrest provided in a vehicle interior, and a control device for controlling the backrest so as to fall down in a vehicle front-rear direction, wherein an upper portion of the backrest portion or an upper portion of the backrest portion is provided. The headrest provided on the front panel and the upper end of the instrument panel located in front of the backrest portion have a shape in which the backrest portion is brought into contact with each other when the backrest portion is tilted to the front of the vehicle and substantially aligned with each other. When the sunshine is high, the control device tilts the backrest forward of the vehicle so that the upper part of the backrest or the headrest and the upper end of the instrument panel facing the backrest come into contact with each other. Vehicle seat. 2. The control device according to claim 1, wherein the seat is a driver seat, and the control device is configured to control when the upper portion of the backrest or the headrest and the upper end of the instrument panel come into contact with each other by the leaning control of the backrest toward the front of the vehicle. The vehicle seat according to claim 1, wherein the steering can be controlled to move downward. 3. A seat having a seating portion and a backrest provided in a vehicle interior, and a control device for controlling a front-rear position of the seat and a tilt angle and a steering angle of the backrest, and the solar radiation into the vehicle interior is provided. When there are many, it detects the direction of solar radiation with respect to the vehicle, estimates the shadow formation in the cabin due to the front and rear position of the seat and the fall angle of the backrest, and adjusts the seat by the amount necessary to block the solar radiation on the seat surface and steering. A vehicle seat characterized in that each part and a steering are moved. 4. The control device, after moving the movable portion to be controlled by the control device to a position where sunlight is blocked, returns the movable portion to be controlled to an original position where an occupant can get on at a predetermined time such as sunset. The vehicle seat according to any one of claims 1 to 3, wherein the vehicle seat is enabled.