JP2001277913A - Seat for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the load on the legs and back of an occupant in getting on and off. SOLUTION: When an occupant sitting on a seat 1 opens a door and pulls a grip 7 downward with one or both legs placed outside an automobile, the applied force is transmitted to a wire fixing part 4 through a wire 5 of a transmission part and pulleys 3 of seating surface raising parts, and the end part of the seat 1 in the inside direction of the car body rotates in the side direction of the car body centering a rotation shaft 2. Thereby, the occupant with one or both legs placed outside the automobile can move the upper body upward with the hip part supported on the seat 1 and can smoothly move the center of gravity of the body outside the automobile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat having excellent occupant getting on and off.

[0002]

2. Description of the Related Art Conventionally, as a seat for an automobile, there has been proposed a seat capable of reducing a load on an occupant's leg when getting on and off.

[0003]

One example of such a seat is disclosed in Japanese Patent Application Laid-Open No. 9-202164. There has been proposed a seat mechanism that is driven in such a manner that the height of the seat is increased and the seat mechanism is driven synchronously so that the seat front-back position moves forward.

An object of the present invention is to provide an automobile seat that can reduce the burden on the occupant's feet when getting on and off by using a mechanism different from the above-mentioned conventional technology.

[0005]

In order to achieve the above object, a vehicle seat according to the present invention has the following features.

That is, an inclination changing means capable of changing the inclination of the seat seat surface in the vehicle width direction with respect to the cabin floor, and a position where the height of the seat seat surface in the vehicle interior direction is higher than the height in the vehicle body lateral direction. And a driving means for driving the inclination changing means.

In the above arrangement, for example, the driving means
An input unit is provided near the door corresponding to the seat surface, and includes an input unit that allows the occupant to input a load when the occupant gets on and off the seat surface, and according to the load input to the input unit, It is preferable to drive the inclination changing means.

In the above case, preferably, the input means and the inclination changing means are mechanically connected, and the driving means drives the inclination changing means by applying a load inputted to the input means. It is preferable to include a conversion means for converting the driving force into the driving force.

Preferably, the driving means inhibits driving of the inclination changing means even if a load is input to the input means when a door corresponding to the seat surface is closed. Means should be included.

[0010] In order to achieve the above object, an automobile seat of another configuration according to the present invention is characterized by the following configuration.

That is, a tilt changing means for changing at least a tilt of the seat with respect to the cabin floor in the vehicle width direction, a locking means for locking the operation of the tilt changing means, and Releasing means for releasing the locking operation by the locking means.

In the above structure, for example, the inclination changing means supports the seat on the vehicle cabin floor so as to be able to swing simultaneously in the vehicle width direction and the vehicle front-rear direction, and to control the swing thereof to a predetermined position. Regulating means for regulating with a regulating force, wherein in a state where the locking operation by the locking means is released by the releasing means, when a load of the occupant is applied to the seat, the load is larger than the regulating force. It is preferable to incline the sheet by the amount in the direction in which the load is applied.

Preferably, the inclination changing means includes:
A rotation mechanism that rotatably supports a lower end of the seat in the vehicle body side direction by a rotation shaft extending in the vehicle body front-rear direction,
Including a spring mechanism that acts to increase the inclination of the seat in the vehicle width direction by pushing up the seat around the rotation axis at the lower end of the seat in the vehicle interior direction, and a regulating unit that regulates the extension of the spring mechanism. Preferably, the locking means holds the inclination of the seat substantially horizontal by prohibiting the operation of the spring mechanism and the restricting means when the door corresponding to the seat is closed.

Further, in order to achieve the above-mentioned object, an automobile seat having another configuration according to the present invention has the following configuration.

That is, the portion of the seat surface on the rear side of the vehicle body is
Seat height changing means for raising the position higher than the front part of the vehicle body, locking means for locking the operation of the seat height changing means, and locking operation by the locking means when an occupant gets on and off the seat seat surface And releasing means for releasing

In the above configuration, for example, the seat surface height changing means includes a spring mechanism that works to push up a portion of the seat seat surface on the rear side of the vehicle body, and the release mechanism includes a lock mechanism that operates the spring mechanism. By releasing the locking operation when the occupant gets on and off the seat seat surface, the seat surface height changing unit may set the portion of the seat seat surface on the rear side of the vehicle body to a position higher than the portion on the front side of the vehicle body. .

[0017]

According to the present invention described above, it is possible to provide an automobile seat capable of reducing the load on the occupant's feet when getting on and off.

That is, according to the first and second aspects of the present invention, at the time of getting off the vehicle, the occupant's waist is moved to a higher position than when the occupant is seated while being supported by the seat seat surface, and the upper body of the occupant is moved. The position of the center of gravity can be moved toward the outside of the vehicle, and the opposite effect can be enjoyed at the time of boarding, so that the burden on the occupant's feet and hips can be reduced.

According to the third aspect of the present invention, at the time of dismounting, the occupant is moved to a higher position than when the occupant is seated while supporting the waist of the occupant with the seat seating surface, and the center of gravity of the occupant's upper body is set forward of the vehicle. It can be moved in the direction, and when riding, you can enjoy the opposite effect,
The burden on the occupant's legs and hips can be reduced.

Further, according to the invention of claim 4, it is possible to realize an operation that respects the operation of the body of the occupant who tries to get on and off.

According to the fifth aspect of the present invention, the mechanism for tilting the seat surface can be realized with a simple structure.

Further, according to the invention of claim 6, the safety of the occupant can be ensured.

According to the seventh aspect of the present invention, the seat can be tilted in an optimal direction according to the operation of the occupant, and the occupant can be secured by the locking means.

According to the eighth and ninth aspects of the present invention, the mechanism for tilting the seat surface can be realized by a simple structure, and the safety of the occupant can be ensured by the locking means.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an automobile seat according to an embodiment of the present invention.

[First Embodiment] FIG. 1 is a view for explaining the structure of an automobile seat according to a first embodiment.
FIG. 2 is a diagram illustrating the operation of the vehicle seat according to the first embodiment.

As shown in FIGS. 1 and 2, a rotating shaft 2 extending in the longitudinal direction of the vehicle body is provided below an end of the seat (seat seating surface) 1 in the lateral direction of the vehicle body. Rotation about the center is possible. In the vicinity of the rotating shaft 2, one end of a wire 5 is fixed by a wire fixing portion 4 via a pulley 3 located inward of the rotating shaft 2 from the vehicle body, and the other end of the wire 5 is For example, a grip 7 is attached via a pulley 8 via the inside of the pillar 6.

When the door corresponding to the seat 1 is closed below the end of the seat 1 in the vehicle interior direction,
A fixing device 10 for inhibiting rotation of the seat 1 is provided. As a structure of the fixing device 10, for example, a rod provided on a pedestal on the floor side is driven by a motor, an electromagnetic valve, or the like, so as to be inserted into or extracted from a hole plate provided on the lower surface of the seat 1. A general mechanism may be employed. The open / closed state of the door may be detected by a general method using an electronic control unit (ECU) (not shown).

In this embodiment, the seat 1 operates independently of a seat back (not shown).

An operation flow when the occupant gets on and off the seat 1 having such a structure will be described.

FIG. 5 is a flowchart showing the flow of the operation when the occupant gets on and off the seat in the first embodiment.

When the shift lever of the automatic transmission (AT) is set to the parking range and the parking brake is operated (step S1), the lock mechanism (not shown) of the seat 1 is released (step S2). Note that the position of the automatic transmission and the operating state of the parking brake may be detected by a general method using an electronic control unit (ECU) (not shown). Good.

Steps S3 to S5: When the occupant sitting on the seat 1 opens the door, the fixing device 10 is unlocked. Then, when the occupant has one or both feet out of the vehicle and pushes down or pulls down with the grip 7 serving as an auxiliary force input unit (step S3), the occupant is added as shown in FIG. The transmitted force is transmitted to the wire fixing portion 4 via the wire 5 as the transmitting portion and the pulley 3 as the seat raising portion (step S4). Is turned around the vehicle body in the lateral direction (step S5). Therefore, the occupant with one or both feet out of the vehicle moves the upper body upward with the waist portion supported by the seat 1 by moving the seat 1 to the state shown in FIG. It can move the center of gravity of the body out of the vehicle smoothly. For this reason, the occupant can stand outside the vehicle without putting a great burden on the knees between the time when the knee is most strained and the painful leg is bent from the bent state to the straightened state (step). S6).

Step S7: When the occupant standing outside the vehicle releases the flip 7, the seat 1 returns to the original state shown in FIG. 1, and the fixing device 10 is locked when the door is closed by the occupant. Become.

Step S8: When the occupant gets on the seat 1, the seat 1 in the state of FIG.
It is possible to sit as it is, but preferably, the grip 7
Sheet 1 again by pressing down
If the user sits in a state opposite to the above-described steps S3 to S6, he / she sits without burdening the knee from the state in which the most burdensome leg is extended to the state in which the leg is bent. be able to.

Step S9 to Step S11: Sheet 1
When the shift lever of the automatic transmission is set to a position other than the parking range or the parking brake is released by an electronic control unit (ECU) (not shown) by the operation of the occupant seated at the vehicle To lock the locking mechanism (not shown) of the seat 1 (step S).
9, step S10), and then the operation of the vehicle is started by the operation of the occupant (step S11).

In the above-described embodiment, a mechanism for rotating the seat surface of the seat 1 as shown in FIG. 2 is realized by using the force applied to the grip 7 by the occupant to move the state as an auxiliary force. . As a result, the burden on the occupant's feet when getting on and off can be efficiently reduced.

<Modification of First Embodiment> FIG.
It is a figure explaining the structure of the car seat in a modification of an embodiment. FIG. 4 is a diagram for explaining the operation of the vehicle seat according to a modification of the first embodiment.

In this modification shown in FIGS. 3 and 4, instead of transmitting the force applied to the grip 7 to the seat by the wire 5, the hand rest 11 is placed near the lateral end of the seat 1 in the vehicle body direction. The hydraulic pressure piston 12, hydraulic circuit 13, and hydraulic piston 14 are used to transmit the force by which the occupant pushes down the hand rest 11 when getting on and off, thereby rotating the seat 1 to the state shown in FIG. In this modification, the seat 1 operates independently of a seat back (not shown).

According to such a modification as well, the load on the feet of the occupant during getting on and off can be efficiently reduced by getting on and off in the same manner as the procedure of FIG. 5 described above.

[Second Embodiment] In the above-described first embodiment, only the seat surface of the seat is operated when the occupant gets on and off. In the second embodiment, the seat seat surface and the seat back are integrated. Works.

FIG. 6 is a view for explaining the structure of an automobile seat according to the second embodiment. FIG. 7 is a diagram illustrating the operation of the vehicle seat according to the second embodiment.

In this modified example shown in FIGS. 6 and 7, the seat (seat seating surface) 22 is provided with a left-right rotation axis that allows the seat 22 to rotate around a rotation axis in the vehicle longitudinal direction with respect to the floor of the vehicle. The bearing 24 and the seat 22 are held by a front / rear rotating shaft / bearing 26 that can rotate around a rotating shaft in the vehicle width direction, and a reaction force generating device 25 including a spring that regulates the operation of the rotating shaft and the bearing mechanism, When the occupant gets on and off, the seat back 21 and the seat 22 are moved in accordance with the occupant's upper body movement.
The horizontal direction (see FIG. 7A) and the front-rear direction (FIG.
(See (b)).

A lock mechanism 27 (not shown in FIGS. 6 and 7) as shown in FIG. 8 is provided on each of the left and right rotation shafts / bearings 24 and the front / rear rotation shafts / bearings 26. In the state shown in FIG. 6 in which the occupant is seated, a fixed state is adopted as shown in the right side of FIG.
When getting on and off the vehicle, the vehicle is in an open state as shown on the left side of FIG. A general structure such as an electromagnetic lock may be employed for the lock 27 mechanism, and the operation of the mechanism may be controlled by an electronic control unit (ECU) (not shown).

Next, a flow when the occupant gets on and off the seat of the present embodiment having such a structure will be described.

FIG. 9 is a flow chart showing the flow of operations when a passenger gets on and off a seat in the second embodiment.

Steps S21 to S23: When the occupant sitting on the seat 22 opens the door (step S23).
21), the lock mechanism 27 is unlocked (step S)
22), left and right rotating shaft / bearing 24 and front / rear rotating shaft / bearing 2
Each shaft of No. 6 is in a rotatable state (step S23).
Note that the open / closed state of the door may be detected by a general method using an electronic control unit (ECU) (not shown).

Steps S24 to S26: The operation in which the occupant on the seat 22 puts his / her upper body and feet out of the vehicle is described in the seat 2.
2, the occupant shifts the center of gravity, and according to the shift of the center of gravity, the seat 22 is tilted by an amount corresponding to a force greater than the reaction force generated by the reaction force generation device 25 (step S24), and the occupant moves. Is released from the sheet 22 (step S25), the sheet 2
2 returns to the original position shown in FIG. 6 (step S26).

Steps S27 to S30: Next, when the occupant opens the door to get on (step S2
7), by pressing the waist or hand against the seat 22, the seat 22 is inclined by an amount corresponding to a force greater than the reaction force generated by the reaction force generator 25, and the occupant takes a sitting posture on the seat 22. The inclination of the sheet 22 changes in accordance with the movement of the upper body or the limbs until it is taken (step S28, step S28).
29) The occupant whose seating posture has been substantially adjusted, for example, locks the lock mechanism 27 when the door is closed (or the operation of a predetermined switch by the occupant may be used as a trigger), and the left and right rotating shafts / bearings 24. And front and rear rotating shaft and bearing 2
6 is regulated (step S30).

Step S11: Thereafter, the traveling of the automobile is started by the operation of the occupant.

According to this embodiment as well, the burden on the occupant's foot and waist when getting on and off can be efficiently reduced. In particular, the seat mechanism according to the present embodiment is suitable for use in a wagon vehicle, a recreational vehicle (RV) vehicle, or the like in which the seating position of the seat is considerably higher than that of a general passenger vehicle.

<Modification of Second Embodiment> FIG. 10 is a diagram illustrating the structure of an automobile seat according to a modification of the second embodiment. FIG. 11 is a view for explaining the operation of a vehicle seat according to a modification of the second embodiment.

In this modification shown in FIGS. 10 and 11, the seat 22 is held on the floor by a plurality of dampers (four in this modification) as reaction force generators 28.
When the occupant gets on and off, the seat back 21 and the seat 22 can be moved in the left-right direction (see FIG. 11A) and the front-rear direction (see FIG. 11B) according to the movement of the occupant's body. I do.

FIG. 12 is a configuration diagram showing an operation control mechanism of an automobile seat according to a modification of the second embodiment.
Basically, the operation of the sheet 22 similar to the operation of the sheet 22 described with reference to FIG. 9 can be realized.

That is, the control circuit 38 controls the compressor 3
By controlling the air pressure generated in 1 and 37 through the pressurizing regulator 32 and the depressurizing regulator 36, the four air dampers 3 serving as the reaction force generating device 28 are controlled.
3 is configured to be able to adjust the air pressure inside.

When the control circuit 38 detects that the door has been opened by the state signal of the door lock 39, the control circuit 38 unlocks the lock mechanism 33A of the air damper 33, which is the reaction force generating device 28, and sends the master back 35 Is opened. When the weight of the occupant shifts on the seat 22 in this state, the air in the air damper 33 moves to the master back 35, and the inclination of the seat 22 changes accordingly.

When the position detection mechanism (not shown) of the air damper 33 detects that the occupant has got off the vehicle, the control circuit 38 presses the pressurizing regulator 32 and the pressure reducing regulator 32 to return the four air dampers 33 to a predetermined initial state. The regulator 36 is controlled, and when the air dampers return to a predetermined initial state, the lock mechanism 33A is locked. Here, the lock mechanism 33A is, for example, a ring-shaped lock mechanism. In the locked state, the operation of the air damper 33 can be restricted by the ring member tightening the damper portion.

According to this modified example, the burden on the occupant's foot and waist at the time of getting on and off can be efficiently reduced.

[Third Embodiment] In this embodiment, similarly to the above-described second embodiment, the seat seat surface and the seat back are operated integrally, and the movement thereof is the same as that of the first embodiment. Similarly, rotation in the lateral direction of the vehicle is enabled.

FIG. 13 is a view for explaining the structure of an automobile seat according to the third embodiment. FIG. 14 is a diagram illustrating the operation of the vehicle seat according to the third embodiment.

As shown in FIGS. 13 and 14, a movable shaft 41 extending in the longitudinal direction of the vehicle body is provided on a pedestal 48 on the floor side below the end of the seat (seat seating surface) 47 in the lateral direction of the vehicle body. And can rotate around its movable axis (see FIG. 15). A mechanism that regulates the rotation angle of the seat 47 is provided below the end of the seat 47 in the vehicle interior direction. This mechanism includes a sheet inclination adjusting spring 43 that generates a reaction force that pushes the sheet 47 upward, a sheet angle adjusting device (wire) 44 that regulates expansion and contraction of the spring, and a sheet that winds and rewinds the wire. And an angle fixing device 45.

The fixing of the seat 47 in the normal state shown in FIG. 13 is performed by two fixing devices 42.
As shown in FIG. 16, the fixing device 42 includes a hole plate 43d provided on the lower surface of the seat 47 and a rod 42 rotatable around a shaft 42b on a pedestal 43c on the floor side.
a. Of the hole plate 43d, the plate of the fixing device 42 provided near the movable shaft 41 includes:
At least two holes are provided in the vertical direction.
4 (a), the rod 42a is inserted into an upper hole provided in the hole plate 43d in the locked state when the occupant is seated, and in the unlocked state shown in FIG. The rod 42a is separated from the plate 43d, and in the locked state when the occupant gets off as shown in FIG.
It takes a state of being inserted into a hole provided below d. still,
The operation of the rod 42a may be controlled using an electromagnetic valve or the like (not shown).

The normal operation of each of the above-described parts (when the occupant is seated)
FIG. 17 shows a list of states at the time of getting off.

The flow of operation when the occupant gets on and off the seat 47 having such a structure will be described.

FIG. 18 is a flowchart showing the flow of operation when the occupant gets off the seat from the seat in the third embodiment.

Steps S41 to S43: The fixing device 42 locks the seat 4 as shown in FIG.
7 (step S41), when it is recognized that the occupant in the seated state has started getting off (step S42), the electronic control unit (ECU) (not shown) controls the electronic control unit (ECU) according to a preset unlocking method. , Fixing device 4
2 is brought into the unlocked state as shown in FIG. Here, the recognition that the occupant starts dismounting is determined by manual operation of a predetermined switch or the like by the occupant, detection that the door is opened, and that the pressing state of the seat at a predetermined position exceeds the reference value. May be detected automatically by a pressure sensor or the like.

Steps S44 and S45: If the unlocking of the fixing device 42 is manually set, the occupant starts moving the upper body and feet (step S44) and performs manual operation of predetermined switches and the like. In response to the operation, the fixing device 42 is unlocked under the control of an electronic control unit (ECU) (not shown).

Steps S48 and S49: When the unlocking of the fixing device 42 is automatically set, it is detected as described above that the occupant has started moving the upper body and feet, and an electronic control unit (ECU) (not shown) is detected. The control of the fixing device 4
By automatically driving a motor (or a solenoid valve or the like) (not shown) to unlock the motor 2 (step S4).
8) Unlock the fixing device 42 (Step S4)
9).

Step S46: No manual operation of a predetermined switch or the like is detected in the manual setting, or
If the weight change of the occupant cannot be detected in the automatic setting, the fixing device 42 is kept in the locked state.

Steps S50 to S52: The seat tilt adjusting spring 4 is controlled by an electronic control unit (ECU) (not shown) to allow the seat 47 to rotate.
3 and the seat angle fixing device 45 are released (step S50, step S51), whereby the seat 47 is released.
Is gradually tilted around the movable shaft 41, and when the seat 47 is tilted to a predetermined angle, in order to maintain the tilt, FIG.
As shown in (c), one rod (the vehicle side) 42a of the fixing device 42 is locked. The inclination angle of the sheet 47 is determined by winding the wire with the sheet angle fixing device 45.
A method of judging based on the number of rotations of the motor for rewinding, a method of detecting the tension of the wire, or the like may be adopted. Thus, the occupant with one or both feet out of the vehicle can move the upper body upward while the waist portion is supported by the seat 47, and smoothly move the center of gravity of the body out of the vehicle. And get off. For this reason, the occupant takes the most burden on the knees, and during the time from when the painful foot is bent to the stretched state,
It is possible to stand outside the vehicle without imposing a great burden on the knee (step S52).

FIG. 19 is a flowchart showing the flow of the operation when the occupant gets on the seat from the seat in the third embodiment.

Steps S61 to S63: When the door is opened and it is detected that the occupant intends to get on the vehicle (steps S61 and S62), the electronic control unit (ECU) (not shown) controls the operation shown in FIG.
The lock of the fixing device 42 locked in the state shown in (c) is released (step S63). Here, the fact that the occupant has started riding may be detected by a manual operation of a predetermined switch, a pressure sensor embedded in the seat 47, or the like.

Step S64 to Step S66: The sheet angle adjusting device (wire) 44 is wound up by the sheet angle fixing device 45 (Step S64), so that the seat tilt adjusting spring 43 is contracted (Step S64).
65) The operation is performed until the sheet 47 is detected at the reference position (horizontal state) (step S66).

Steps S67 to S69: In order to fix the seat 47 at the reference position, a motor (or a solenoid valve or the like) (not shown) is automatically driven by control of an electronic control unit (ECU) (not shown) ( As a result, the fixing device 42 is locked as shown in FIG. 14A (step S68), and the locked state is maintained.

By riding as described above, the knee can be seated without burden on the knee from the state in which the foot, which places the greatest burden on the knee, to the state in which the foot is extended is bent.

The mechanism for regulating the inclination angle of the seat 47 is not limited to the above-described mechanism, but may be a mechanism using an air damper or a hydraulic damper, for example. In the above-described embodiment, the seat 47 is connected to the movable shaft 42.
The seat is rotated around and the turning operation is controlled by the seat angle adjusting device (wire) 44 and the seat angle fixing device 45 provided on the other side of the seat. However, the present invention is not limited to this structure. A similar mechanism may be provided in the lower portion of the end of the 47 in the lateral direction of the vehicle body, and the mechanism may be moved synchronously.

[Fourth Embodiment] In this embodiment, the weight of the occupant can be easily shifted by operating the seat surface and the seat back.

FIG. 20 is a view for explaining the structure of an automobile seat according to the fourth embodiment. FIG. 21 is a diagram illustrating the operation of the vehicle seat according to the fourth embodiment.

As shown in FIG. 20, the seat (seat seat surface) 57 and the floor can be extended and contracted by a fixed shaft support stay in front of the bottom of the seat when the occupant is seated in a fixed state (locked state). At the same time, it is fixed by a tilt angle adjusting spring 52 and a fixing device 54 behind the bottom. The rotating shaft support stay 55 is rotatably supported by the rotating shaft 53 at the front of the bottom of the seat 57 and has a structure that can be raised and lowered from the floor by a mechanism (not shown) using an air damper or a hydraulic damper.

The inclination adjusting spring 52 is provided with a seat 57.
As shown in FIG. 20, a reaction force is generated that pushes the occupant upward, the occupant contracts as shown in FIG. 20, and in the contracted state, is locked by a lock mechanism (not shown).

The fixing device 54 is a device for fixing the seat 57 and the seat back 56 in a normal state shown in FIG. 20. The fixing device 54 has a structure similar to that of the fixing device 42 in the third embodiment described above. Similarly to the above, a structure using a motor, a solenoid valve, or the like may be adopted.

The seat 57 and the seat back 56 are connected by a link rod 51, as shown in FIG.
In order to realize the operation of the seat back 56 shown in FIG.
7 and the inside of the seat back 56, the link rod 51
It is assumed that a motor (not shown) for driving is embedded.

FIG. 21 shows a main state of the seat 57 and the seat back 56 when the seated occupant gets off the vehicle in the locked state shown in FIG.

That is, FIG. 21A shows that the fixing device 54 is unlocked while the occupant is seated,
The rotation shaft support stay 55 is protruding from the floor, and thereby the seat 57 and the seat back 56 are tilted rearward.

FIG. 21 (b) shows a state where the seat back 56 is retracted by the operation of the link rod 51 thereafter.

FIG. 21C shows that the lock mechanism (not shown) of the tilt angle adjusting spring 52 is released, and FIG.
When the link rod 51 further moves from the state shown in (b), the seat back 56 retreats obliquely downward, and the rotating shaft support stay 55 descends into the floor by a predetermined length. Shows that the tilt angle adjusting spring 52 is extended in accordance with the movement of the upper body in the vehicle forward direction to get off, and the height of the rear portion of the seat 57 is higher than the height of the front portion.

The above-described normal operation of each part (when the occupant is seated)
FIG. 22 shows a list of states at the time of getting off. In the figure, θ0 is the angle formed by the seat surface of the seat 57 with respect to the floor in the normal state shown in FIG. θ1 is the angle formed by the seat back 56 with respect to the floor in the normal state shown in FIG.

Further, θA1 is the angle formed by the seat 57 after the operation shown in FIG. 21B with respect to the floor, and θA2
Is the angle formed by the seat 57 after the operation shown in FIG.

Then, θB1 is the angle between the seat back 56 after the operation shown in FIG. 21B and the floor, and θB2 is the angle between the seat back 56 after the operation shown in FIG. It is an angle to make.

The flow of operations when the occupant gets on and off the seat 57 and the seat back 56 having such a structure will be described.

FIG. 23 is a flowchart showing the flow of the operation when the occupant gets off the seat from the seat in the fourth embodiment.

Steps S71 to S73: When the fixing device 54 recognizes that the getting-off of the seated occupant has started (step S72), as shown in FIG. 20, the seat 57 in the locked state (step S71). The fixing device 54 is controlled by an electronic control unit (ECU) (not shown) according to a preset unlocking method.
Similar to the fixing device 42 in the third embodiment, the unlocked state is established by driving a motor, a solenoid valve, and the like (not shown). Here, the recognition that the occupant starts dismounting is determined by manual operation of a predetermined switch or the like by the occupant, detection that the door is opened, and that the pressing state of the seat at a predetermined position exceeds the reference value. May be detected automatically by a pressure sensor or the like.

Steps S74 and S75: If the unlocking of the fixing device 54 is manually set, the occupant starts moving the upper body and feet (step S74) and performs manual operation of predetermined switches and the like. In response to the operation, the fixing device 54 is unlocked under the control of an electronic control unit (ECU) (not shown).

Steps S78 and S79: If the unlocking of the fixing device 54 is automatically set, it is detected as described above that the occupant has started moving the upper body and feet, and an electronic control unit (ECU) (not shown) is detected. The control of the fixing device 5
By automatically driving a motor (not shown) (or a solenoid valve or the like) to unlock the motor 4 (step S7).
8) Unlock the fixing device 54 (Step S7)
9).

Step S76: No manual operation of a predetermined switch or the like is detected in the manual setting, or
When the weight change of the occupant cannot be detected in the automatic setting, the fixing device 54 is kept in the locked state.

Steps S80 to S82: By extending the rotating shaft support stay 55 as shown in FIG. 21A (step S80), the seat 57 and the seat back 56 are tilted backward while keeping the same angle. At the same time, the seat back 56 is moved backward by operating the link rod 51 from the state shown in FIG. 21A, and the seat 57 and the seat back 56 are moved from each other as shown in FIG.
The state shown in (b) is taken (step S82).

Steps S83 and S84: The lock mechanism (not shown) of the tilt angle adjusting spring 52 is released, and the link rod 51 is further operated to make the seat back 5
6 is retracted obliquely downward, and the rotating shaft support stay 55
Is lowered into the floor by a predetermined length. In this state, when the occupant moves his / her upper body in the forward direction of the vehicle to get off the vehicle, the inclination angle adjusting spring 52 extends in accordance with the state movement, and the height of the rear portion of the seat 57 is higher than the height of the front portion and the front is higher. The state shown in FIG. 21C is tilted (step S83). Thereby, while the center of gravity of the occupant sitting on the seat 57 moves forward from the normal state, and the knee is extended from the normal sitting state, the center of gravity of the body is smoothly moved out of the vehicle, and It is possible to get off without imposing a heavy burden (step S84). In step S83, since the seat 57 is tilted forward and the seat back 56 is further retracted, when the structure of the seat according to the present embodiment is adopted on the driver's seat side,
The occupant's chest can be prevented from contacting the steering wheel.

FIG. 24 is a flowchart showing the flow of the operation when the occupant gets on the seat from the seat in the third embodiment.

Steps S85 to S88: When the door is opened and it is detected that the occupant is about to get on (steps S85 and S86), the control of an electronic control unit (ECU) not shown in FIG.
The seat 57 and the seat back 56 in the state shown in FIG.
By driving the sheet 57, the sheet 57 shown in FIG.
Is tilted backward (step S87). At this time, the inclination angle adjusting spring 52 contracts due to the load of the occupant to be seated, so that a lock mechanism (not shown) of the spring is locked (step S88).
Here, the fact that the occupant has started riding may be detected by a manual operation of a predetermined switch, a pressure sensor embedded in the seat 57, or the like.

Steps S89 to S92: Under the control of an electronic control unit (ECU) (not shown),
The seat 57 and the seat back 56 in the state shown in FIG.
20 are further driven to set the state shown in FIG. 20 (step S89), and at the same time, the motor (not shown) of the fixing device 54 is driven to the locked state (steps S90 and S91), and the locked state is maintained. (Step S
92).

If the rider rides as described above, he / she can sit without putting a burden on the knee from the state in which the foot, which places the greatest burden on the knee, to the state in which the foot is extended is bent.

The mechanism for regulating the inclination angle of the seat 47 is not limited to the above-described mechanism, but may be a mechanism using an air damper or a hydraulic damper, for example. In the above-described embodiment, the seat 47 is connected to the movable shaft 42.
The seat is rotated around and the turning operation is controlled by the seat angle adjusting device (wire) 44 and the seat angle fixing device 45 provided on the other side of the seat. However, the present invention is not limited to this structure. A similar mechanism may be provided in the lower portion of the end of the 47 in the lateral direction of the vehicle body, and the mechanism may be moved synchronously.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a structure of an automobile seat according to a first embodiment.

FIG. 2 is a diagram illustrating the operation of the vehicle seat according to the first embodiment.

FIG. 3 is a diagram illustrating a structure of a vehicle seat according to a modification of the first embodiment.

FIG. 4 is a diagram illustrating the operation of a vehicle seat according to a modification of the first embodiment.

FIG. 5 is a flowchart illustrating a flow of an operation when the occupant gets on and off the seat according to the first embodiment.

FIG. 6 is a diagram illustrating a structure of an automobile seat according to a second embodiment.

FIG. 7 is a view for explaining the operation of the vehicle seat according to the second embodiment.

FIG. 8: Left and right rotating shafts and bearings 24 and front and rear rotating shafts and bearings 2
FIG. 6 is a diagram illustrating the operation of a lock mechanism provided on each shaft of No. 6;

FIG. 9 is a flowchart illustrating a flow of an operation when a passenger gets on and off a seat according to a second embodiment.

FIG. 10 is a diagram illustrating a structure of an automobile seat according to a modification of the second embodiment.

FIG. 11 is a diagram illustrating an operation of a vehicle seat according to a modification of the second embodiment.

FIG. 12 is a configuration diagram illustrating an operation control mechanism of a vehicle seat according to a modification of the second embodiment.

FIG. 13 is a diagram illustrating a structure of an automobile seat according to a third embodiment.

FIG. 14 is a diagram illustrating the operation of the vehicle seat according to the third embodiment.

FIG. 15 is a view showing a schematic structure of a movable shaft.

FIG. 16 is a diagram illustrating a lock mechanism of the fixing device 42.

FIG. 17 is a diagram illustrating the operation of each part of the seat mechanism according to the third embodiment.

FIG. 18 is a flowchart illustrating a flow of an operation when the occupant gets off the seat from the seat in the third embodiment.

FIG. 19 is a flowchart illustrating a flow of an operation when the occupant gets on the seat from the seat in the third embodiment.

FIG. 20 is a diagram illustrating the structure of an automobile seat according to a fourth embodiment.

FIG. 21 is a view for explaining the operation of the vehicle seat according to the fourth embodiment.

FIG. 22 is a diagram illustrating the operation of each part of a seat mechanism according to a fourth embodiment.

FIG. 23 is a flowchart showing a flow of an operation when the occupant gets off the seat from the seat in the fourth embodiment.

FIG. 24 is a flowchart illustrating a flow of an operation when the occupant gets on the seat from the seat in the third embodiment.

[Explanation of symbols]

 1, 22, 47, 57: seat, 2: rotating shaft, 3, 8: pulley, 4: wire fixing portion, 5: wire, 6: pillar, 7: grip, 9: roof, 10, 42, 54: fixing Apparatus, 11: hand rest, 12, 14: hydraulic piston, 13: hydraulic circuit, 21, 46, 56: seat back, 23: seat rail, 24: left and right rotating shaft / bearing, 25, 28: reaction force generator , 26: front and rear rotating shaft / bearing, 27: lock key, 31, 37: compressor, 32: pressurizing regulator, 33: air damper, 34: valve, 35: master bag, 36: pressure reducing regulator, 38: control circuit, 39: door lock, 41: movable shaft, 42a: rod, 42b: shaft, 42d: hole plate, 43: seat tilt adjustment spring, 44: seat angle adjustment Device (wire), 45: seat angle fixing device, 42c, 48: pedestal, 51: link rod, 52: tilt angle adjusting spring, 53: rotary shaft, 55: rotary shaft support stay,

Continuation of front page (72) Inventor Kenji Ishida 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda F-term (reference) 3B087 AA01 BA11 BB16 BC23

Claims (9)

[Claims] An inclination changing means for changing an inclination of a seat seat surface with respect to a cabin floor in a vehicle width direction; A driving means for driving the inclination changing means. 2. An inclination changing means capable of changing at least an inclination of a seat with respect to a vehicle cabin floor in a vehicle width direction; a locking means for locking an operation of the inclination changing means; A vehicle seat, comprising: a release unit that releases a lock operation by the lock unit. 3. A seat height changing means for setting a portion of the seat seat rear side on the rear side of the vehicle body to a position higher than a portion on the front side of the vehicle body, a lock means for locking the operation of the seat height changing means, A release means for releasing a locking operation by the locking means when an occupant gets on and off the seat seat surface. 4. The driving means includes input means disposed near a door corresponding to the seat surface, the input means enabling the occupant to input a load when the occupant gets on and off the seat surface. 2. The vehicle seat according to claim 1, wherein the inclination changing unit is driven in accordance with the load input to the vehicle. 5. The input means and the inclination changing means are mechanically connected, and the driving means converts a load input to the input means into a driving force for driving the inclination changing means. The vehicle seat according to claim 4, further comprising a conversion unit that performs conversion. 6. The driving means includes a driving prohibiting means for prohibiting driving of the inclination changing means even when a load is input to the input means when a door corresponding to the seat surface is closed. The vehicle seat according to claim 4, wherein: 7. The tilt changing means supports the seat on the vehicle cabin floor so that the seat can swing simultaneously in a vehicle width direction and a vehicle front-rear direction.
Regulating means for regulating the swing with a predetermined regulating force, and in a state where the locking operation by the locking means is released by the releasing means, when the load of the occupant is applied to the seat, the load is The vehicle seat according to claim 2, wherein the seat is inclined in a direction in which the load is applied by an amount larger than the regulation force. 8. A rotation mechanism for rotatably supporting a lower end of the seat in a lateral direction of the vehicle body by a rotation shaft extending in a longitudinal direction of the vehicle, and a lower end of the seat in an inward direction of the vehicle body. A spring mechanism that works to increase the inclination in the vehicle width direction by pushing up the seat around the rotation axis, and a regulating unit that regulates the extension of the spring mechanism. The vehicle seat according to claim 2, wherein when the door corresponding to (1) is closed, the inclination of the seat is held substantially horizontal by prohibiting the operation of the spring mechanism and the restricting means. . 9. The seat height changing means includes a spring mechanism which works to push up a portion of the seat seat surface on the rear side of the vehicle body, wherein the release mechanism performs a locking operation of the spring mechanism by the locking means. By releasing the seat when the occupant gets on and off the seat, the seat height changing means sets the portion of the seat seat on the rear side of the vehicle body to a position higher than the portion on the front side of the vehicle body. The vehicle seat according to claim 3.