JPH0867190A - Seat device for vehicle - Google Patents

Abstract

PURPOSE: To make a seat in a storing condition as the condition that a head rest is installed to the seat, by moving the seat to the upper side to the third connecting member, by a parallel link mechanism formed of the seat, and the first, the second, and the third connecting members. CONSTITUTION: By laying down a seat back 52 to a seat cushion 51 side, and rotating a release lever 74 in the direction X, a locking member 74a is rotated, and the locking of the locking member 74a and the first hook 78 is released. By releasing the fixation of the seat rear part through a fixing mechanism, by a spring 66 whose one end is engaged to the first link 57, and the other end is engaged to a pin, the spring 66 rotates the third link 63 through the pin, and raises and lays down the seat automatically. And since the spring 66 moves the seat to the upper side to the third link 63, as well as raises and lays down the seat, the seat can be made in the storing condition easily while a head rest 53 is being installed to the seat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device which is capable of storing a seat and allowing the seat to be engaged and disengaged centering on a front portion of the seat.

[0002]

2. Description of the Related Art As a conventional technique of this kind, there is
Those described in Japanese Patent No. 46978 are known. This is composed of a rotation support mechanism that rotatably supports the front portion of the seat with respect to the floor of the vehicle body, and a fixing mechanism that allows the rear portion of the seat to be engaged and disengaged with respect to the floor of the vehicle body. The rear part is separated from the vehicle body floor, and the seat is tilted around the front part of the seat to change the seated state to the retracted state.

[0003]

In the above-mentioned prior art, when the seat is stored, the headrest attached to the seat comes into contact with the floor of the vehicle body.
The floor of the car body where the headrest comes into contact is made into a recess,
Alternatively, unless the headrest is removed from the seat, the seat cannot be brought into the stored state with the seat vertical. or,
When the seat is in the retracted state, the engaging portion of the fixing mechanism projects from the cover, so that the luggage space cannot be used effectively.

An object of the present invention is to make it possible to put the headrest on the seat and put it in the stored state, and to effectively utilize the space of the luggage carrier.

[0005]

[Means for Solving the Problems] Means for solving the above-mentioned problems in the invention of claim 1 are as follows: a first bracket arranged at a front portion of a seat and a rear portion of a seat. The second bracket, the first connecting member arranged on the first bracket, the second connecting member arranged on the second bracket, and the second connecting member arranged substantially parallel to the seat via the first and second connecting members. Third connecting member, a rotation support mechanism that rotatably supports one end of the third connecting member with respect to the floor of the vehicle body, and a fixing that releasably fixes the other end of the third connecting member to the floor of the vehicle body. The seat and the cover, which is disposed below the seat and covers the rotation support mechanism and the fixing mechanism.
The parallel link mechanism is formed by the connecting member, the second connecting member, and the third connecting member, and the fixing mechanism is stored in the cover when the sheet is stored.

According to a second aspect of the present invention, the means is wound around the connecting portion between the first connecting member and the third connecting member so that one end engages with the first connecting member and the other end engages with the connecting portion. A biasing member, and a first connecting member that is partly extended to the floor of the vehicle body and is always in contact with and is biased by the biasing member,
That is, the third connecting member and the connecting portion rotate integrally.

[0007]

According to the above-described vehicle seat device of the first aspect, the seat can be tilted with the rotation support mechanism as the center of rotation by releasing the fixation of the rear portion of the seat by the fixing mechanism. Further, when the headrest of the seat comes into contact with the floor of the vehicle body, the parallel link mechanism formed by the seat, the first, second and third connecting members can move the seat upward with respect to the third connecting member. Therefore, the distance between the seat and the third connecting member can be reduced. As a result, the seat can be brought into the stored state with the headrest attached, and the thickness of the seat in the stored state can be reduced. Further, when the seated state is changed from the retracted state, the seat is tilted to the floor of the vehicle body to return to the fixable state before the fixing mechanism is fixed by the parallel link mechanism, so that the seat can be fixed accurately. It can be seated. Further, since the engaging portion of the fixing mechanism that engages with the vehicle body can be stored in the cover of the seat by the parallel link mechanism, the luggage space can be effectively used.

According to another aspect of the vehicle seat device of the present invention, the first connecting member is always in contact with the floor of the vehicle body by the biasing member having one end engaged with the first connecting member and the other end engaged with the connecting portion. It is urged to touch. When the fixation of the rear portion of the seat is released by the fixing mechanism, the biasing member can rotate the third connecting member via the connecting portion to automatically tilt the seat. Further, since the biasing member raises and lowers the seat and at the same time moves the seat upward with respect to the third connecting member, it can be easily put into the retracted state with the headrest attached to the seat.

[0009]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a vehicle seat device 10. FIG. 2 shows an enlarged view of the waist. As shown in the figure, a seat back 12 is supported by a seat cushion 11 via a known reclining mechanism (not shown), and a headrest 13 is detachably attached to the seat back 12. In the seat cushion 11, a seat rail 14 is arranged on the lower side in the drawing, and the seat rail 14
The first bracket 15 is arranged at one end (the left end in the drawing) of the above, and the second bracket 16 is arranged at the other end (the right end in the drawing). One end of a substantially J-shaped first link (first connecting member) 17 is rotatably connected to the first bracket 15 by a pin 18, and the other end is rigid to a vehicle seat device. A pipe 19 that secures is secured.
A second link (second connecting member) 20 is connected to the second bracket 16, and the third link is connected to the first link 17 and the second link 20 so as to be substantially parallel to the seat rail 14. (Third connecting member) 21 is connected by pins 22 and 23. The pin 22 that connects the third link 21 to the first link 17 has a rectangular shaft portion.
The link 21 and the pin 22 are integrally rotatable.
One end of a spiral spring 24 is engaged with the pin 22, and the other end of the spring 24 is locked to the pipe 19. A fixing mechanism is provided at one end (right end in the figure) of the third link 21, and a rotation support mechanism is provided at the other end (left end in the figure). A cover 25 is provided on the seat cushion 11 to cover the respective mechanisms.

The fixing mechanism includes a third bracket 27 fixed to the third link 21 by a bolt 26, and a first bracket rotatably supported by a pin 28 on the third bracket 27.
The hook 29, the first striker 32 disposed on the rigid body 31 of the floor 30 of the vehicle body and engaged with the first hook 29, the release lever 34 pivotally supported by the pin 33 on the third bracket 27, and the third link. The second hook 37 is rotatably supported on the pin 21 by a pin 35 and is engageable with a pin 36 that connects the second bracket 16 and the second link 20. Pin 3 pivotally supporting the release lever 34
A locking member 34a is integrally rotatably attached to the third member 3, and the first hook 29 and the locking member 34a are connected by a spring 38 to be in a locked state. Also, the second
The shaft portion of the pin 35 that pivotally supports the hook 37 on the third link 21 is rectangular, and the second hook 37 is pivotally supported on one side and the release plate 39 is pivotally supported on the other side. The release plate 39 and the release lever 34 are connected to each other by, for example, a wire, and when the release lever 34 is operated, the second hook 37 is also interlocked and operated. The seat rail 14, the first link 17, the second link 20, and the third link 21 form a parallel link mechanism.

The rotation support mechanism includes a third hook 40 fixed to the other end of the third link 21, a third striker 41 arranged on the rigid body 31 of the floor 30 of the vehicle body and engaged with the third hook 40. The third hook 40 is rotatably supported by a pin 42, one end of which is engageable with the third striker 41, and the other end of which is a fourth hook 43 that abuts on the rigid body 31 of the floor 30 of the vehicle body. . A spring 44 is wound around the pin 42 to urge the fourth hook 43 in the engaging direction. When the rear portion of the seat is separated from the floor 30 of the vehicle body by the operation of the fixing mechanism, the rotation support mechanism enables the seat cushion 11 to rotate about the third striker 41 as a rotation center. Then, when the seat cushion 11 is erected to be stored, the headrest 13 provided on the seat back 12 contacts the floor 30 of the vehicle body, and when further erected, the seat moves upward with respect to the third link 21. Thus, the distance between the third link 21 and the seat rail 14 can be reduced. This state is shown in FIG.

Next, the operation of this embodiment will be described.

When the seat back is tilted to the seat cushion 11 side by a reclining mechanism (not shown) 12 and the release lever 34 is rotated in the X direction, the locking member 34a is rotated and the locking member 34a and the first hook 29 are connected. Release the lock. When the lock is released, the first hook 29 is rotated in the X direction by the urging force of the spring 38, and the engagement with the first striker 32 is released. Further, the release lever 34 simultaneously releases the engagement between the second hook 37 and the second striker (pin 36) 36, and when the seat cushion 11 is raised and lowered, the seat 24 is moved to the third link 21 by the urging force of the spring 24. In order to move it upward, the seat rail 14
The distance between the third link 21 and the third link 21 can be reduced to reduce the thickness of the entire sheet. At this time, the engaging portion of the fixing mechanism is housed in the cover 25 due to the short distance between the seat rail 14 and the third link 21. Further, since the seat rail 14 is moved upward by the parallel link mechanism, the seat cushion 11 can be made substantially vertical even when the headrest 13 is mounted. When the seat cushion 11 is in the retracted state, the other end of the fourth hook 43 slides on the rigid body 31 of the floor 30 of the vehicle body and rotates in the engaging direction. Then, before the seat cushion 11 is put into the retracted state, the fourth hook 43 is engaged with the third striker 41, and the seat cushion 11 is fixed to the floor 30 of the vehicle body by the third hook 40 and the fourth hook 43. The seated state is shown in FIG. In addition, while storing the seat,
Since the third hook 40 only engages, the seat can be easily removed.

Although the seat 24 is moved upward when the seat is in the retracted state by the spring 24 described above, the seat can be moved upward without using the spring 24. When the seat cushion 11 falls down, the headrest 13 comes into contact with the floor 30 of the vehicle body. If the seat cushion 11 is raised and lowered as it is,
With the parallel link mechanism, the seat can be moved upward with respect to the third link 21, and the distance between the seat rail 14 and the third link 21 can be reduced to reduce the thickness of the entire seat.

When the seat cushion 11 is moved from the retracted state to the seated state, the seat cushion 11 is lowered toward the floor 30 of the vehicle body so that the fourth hook 43 is separated from the third striker 41 and the other end of the vehicle body is moved. It contacts the rigid body 31 of the floor 30. Also, the first hook 29 and the third hook 40
Pitch with, 1st striker 32 and 3rd striker 4
The pitch with 1 does not change by the parallel link mechanism, and when the seat is rotated, the fixing mechanism returns to the fixable state by the parallel link mechanism and the first hook 2
9 engages the first striker 32. At this time, when the seat cushion 11 is moved in the direction in which the seat is separated from the third link 21 and the seat rail 14, the second hook 37 and the second striker 36 engage with each other to complete the seated state.

The seat rail 14 and the parallel link mechanism formed by the first, second and third links 17, 20, 21 can move the seat upward with respect to the third link 21. And the third link 2
The distance from 1 can be reduced. As a result, the seat can be brought into the stored state with the headrest 13 still attached, and the thickness of the entire seat in the stored state can be reduced. The engaging portion of the fixing mechanism that engages with the vehicle body is covered by the third link 21 to cover the seat 25.
Since it can be stored inside, the luggage space can be effectively used.

Next, another embodiment will be described.

FIG. 4 is a side view of the vehicle seat device 50. FIG. 5 shows an enlarged view of the waist. As shown in the figure, a seat back 52 is supported by a seat cushion 51 via a known reclining mechanism (not shown), and a headrest 53 is detachably attached to the seat back 52. In the seat cushion 51, a seat rail 54 is arranged on the lower side in the drawing, and the seat rail 54
The first bracket 55 is arranged at one end (the left end in the figure) of the above, and the second bracket 56 is arranged at the other end (the right end in the figure). One end of a substantially Y-shaped first link (first connecting member) 57 is rotatably connected to the first bracket 55 by a pin 58, and the other end of the first link 55 has a rigidity for a vehicle seat device. The pipe 59 is inserted. or,
The remaining end 57a of the first link 57 is the floor 6 of the vehicle body.
It is always in contact with 0. In addition, the second bracket 56,
The second link (second connecting member) 62 is connected to the first link 55 so as to be substantially parallel to the seat rail 54.
And a third link (third connecting member) 63 to the second link 56.
Are connected by pins 64 and 65. A pin 64 connecting the third link 63 to the first link 57 has a rectangular shaft portion, and the third link 63 and the pin 64 are integrally rotatable. One end of a spiral spring 66 is engaged with the pin (connecting portion) 64, and the other end of the spring 66 is locked to the pipe 59. or,
A fixing mechanism is provided at one end (right end in the figure) of the third link 63, and a rotation support mechanism is provided at the other end (left end in the figure). Further, the seat cushion 51 is provided with a cover 67, which covers the respective mechanisms. or,
The end portion 57a of the first link 57 is constantly urged by a spring 66 so as to come into contact with the floor 60 of the vehicle body. When the fixing mechanism releases the fixation of the seat cushion 51, the spring 66 causes the pin 64 to move. Through the third
By rotating the link 63, the seat cushion 51 can be automatically raised and lowered.

The fixing mechanism includes a third bracket 69 fixed to the third link 63 by a bolt 68 and a first bracket rotatably supported by a pin 70 on the third bracket 69.
The hook 71, the first striker 72 disposed on the rigid body 61 of the floor 60 of the vehicle body and engaged with the first hook 71, the release lever 74 pivotally supported by the pin 73 on the third bracket 69, and the third link. The second hook 77 is rotatably supported on the pin 63 by a pin 75 and is engageable with a pin 76 that connects the second bracket 56 and the second link 62. Pin 7 that pivotally supports the release lever 74
A locking member 74a is integrally rotatably attached to the unit 3, and the first hook 71 and the locking member 74a are connected by a spring 78 to be in a locked state. Also, the second
The shaft portion of the pin 75 that pivotally supports the hook 77 on the third link 63 is rectangular, and the second hook 77 is pivotally supported on one side and the release plate 79 is pivotally supported on the other side. The release plate 79 and the release lever 74 are connected by, for example, a wire, and when the release lever 74 is operated, the second hook 77 is also interlocked and operated. Further, the seat rail 54, the first link 57, the second link 62, and the third link 63 form a parallel link mechanism.

The rotation support mechanism includes a third hook 80 fixed to the other end of the third link 63, a third striker 81 provided on a rigid body 61 of the floor 60 of the vehicle body, and engaged with the third hook 80. The third hook 80 is rotatably supported by a pin 82, one end of which is engageable with the third striker 81, and the other end of which is a fourth hook 83 that abuts on the rigid body 61 of the floor 60 of the vehicle body. . A spring 84 is wound around the pin 82 to urge the fourth hook 83 in the engaging direction. When the rear portion of the seat is separated from the floor 60 of the vehicle body by the operation of the fixing mechanism, the rotation support mechanism automatically tilts the seat cushion 51 with the third striker 81 as the center of rotation by the urging force of the spring 66. Then, when the seat cushion 51 is erected and stored, the seat moves upward with respect to the third link 63,
The distance between the third link 63 and the seat rail 54 can be reduced. This state is shown in FIG.

Next, the operation of another embodiment will be described.

When the seat back 52 is tilted to the seat cushion 51 side by a reclining mechanism (not shown) and the release lever 74 is rotated in the X'direction, the locking member 74a is rotated to lock the locking member 74a and the first hook 78. Is unlocked. When the lock is released, the first hook 78 is rotated in the X ′ direction by the urging force of the spring 78, and the engagement with the first striker 72 is released. Also, the release lever 74
Is the second hook 77 and the second striker (pin 76) at the same time.
By releasing the engagement with 76, the urging force of the spring 66, which was regulated at the time of fixing, pivots the third link 63 and automatically raises and lowers the seat cushion 51. Further, as the third link 63 is rotated, the seat rail 54
The distance between the third link 63 and the third link 63 gradually decreases, and the thickness of the seat can be reduced when the seat cushion 51 is in the retracted state. Further, at this time, the engaging portion of the fixing mechanism is housed in the cover 67 because the distance between the seat rail 54 and the third link 63 becomes short. Further, since the seat rail 54 moves upward by the parallel link mechanism, the seat cushion 51 can be made substantially vertical even when the headrest 53 is mounted. When the seat cushion 51 is in the retracted state, the other end of the fourth hook 83 slides on the rigid body 61 of the floor 60 of the vehicle body and rotates in the engaging direction. Then, before the seat cushion 51 is put into the retracted state, the fourth hook 83 engages with the third striker 81, and the seat cushion 51 is fixed to the floor 60 of the vehicle body by the third hook 80 and the fourth hook 83. The storage state of the seat is shown in FIG. Further, since the third hook 80 only engages during the storage of the seat, the seat can be easily removed.

When the seat cushion 51 is changed from the retracted state to the seated state, the seat cushion 51 is lowered toward the floor 60 of the vehicle body so that the fourth hook 83 is separated from the third striker 81 and the other end of the vehicle body is fixed. It contacts the rigid body 61 of the floor 60. In addition, the first hook 71 and the third hook 80
Pitch with, and the first striker 72 and the third striker 8
Since the pitch with 1 does not change due to the parallel link mechanism, it can be fixed by rotating the seat as it is. When the seat cushion 51 is rotated, the end portion 57a of the first link 57 is brought into sliding contact with the floor 60 of the vehicle body, whereby the fixing mechanism is gradually seated by the parallel link mechanism, and the second hook 77 causes the second striker to move. 76
And the first hook 71 is engaged with the first striker 72, the seated state is completed, and the spring 60
One urging force is regulated by the end portion 57a of the first link 57, and the other urging force is regulated by the fixed third link 63.

From the above, when the fixing of the rear portion of the seat is released by the fixing mechanism by the spring 66 having one end engaged with the first link 57 and the other end engaged with the pin 64,
The spring 66 rotates the third link 63 via the pin 64 and automatically tilts the seat. Further, since the spring 66 raises and lowers the seat and at the same time moves the seat upward with respect to the third link 63, the headrest 53 can be easily put in the retracted state with the seat still attached.

The release levers 34 and 74 described in the above two embodiments release the first hooks 29 and 71 and the second hooks 37 and 77.
It is also possible to release the 9, 71 and the second hooks 37, 77 by providing separate release levers.

[0027]

According to the vehicle seat apparatus of the above-mentioned claim 1, the seat is positioned above the third connecting member by the parallel link mechanism formed by the seat, the first, second and third connecting members. The distance between the seat and the third connecting member can be reduced. As a result, the seat can be brought into the stored state with the headrest attached, and the thickness of the entire seat in the stored state can be reduced. Also, when the seated state is changed from the retracted state, the seat is tilted to the floor of the vehicle body to return to the fixable state before the fixing mechanism is fixed by the parallel link mechanism, and the seat is accurately fixed. You can sit and sit. Further, the engaging portion of the fixing mechanism that engages with the vehicle body can be stored in the seat cover by the third connecting member, so that the luggage space can be effectively used.

According to another aspect of the vehicle seat apparatus of the present invention, the fixing mechanism releases the fixation of the rear portion of the seat by the urging member whose one end is engaged with the first connecting member and the other end is engaged with the connecting portion. The biasing member can rotate the third connecting member via the connecting portion to automatically raise and lower the seat. or,
The biasing member raises and lowers the seat at the same time
Since the headrest is moved upward with respect to the connecting member, the seat can be easily put in the stored state with the headrest attached.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle seat device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a waist according to the embodiment of the present invention.

FIG. 3 is a side view of a vehicle seat device according to an embodiment of the present invention.

FIG. 4 is a side view of a vehicle seat device according to another embodiment of the present invention.

FIG. 5 shows an enlarged view of a waist according to another embodiment of the present invention.

FIG. 6 is a side view of a vehicle seat device according to another embodiment of the present invention.

[Explanation of symbols]

 15, 55 ... First bracket 16, 56 ... Second bracket 17, 57 ... First link (first connecting member) 20, 62 ... Second link (second connecting member) 21, 63 ... Third link (third connecting member) 24, 66 ... Spring (biasing member) 64 ... Pin (connecting portion)

Claims (2)

[Claims] 1. A first bracket arranged in the front part of the seat, a second bracket arranged in the rear part of the seat, a first connecting member arranged in the first bracket, and a second bracket. A second connecting member, a third connecting member arranged substantially parallel to the seat via the first and second connecting members, and one end of the third connecting member on the floor of the vehicle body. A rotation support mechanism that rotatably supports the third support;
The seat and the first connection are composed of a fixing mechanism that releasably fixes the other end of the connecting member to the floor of the vehicle body, and a cover that is arranged below the seat and covers the rotation support mechanism and the fixing mechanism. A vehicle seat device, wherein a parallel link mechanism is formed by the member, the second connecting member and the third connecting member, and the fixing mechanism is stored in the cover when the seat is stored. 2. A biasing member wound around a connecting portion between the first connecting member and the third connecting member and having one end engaged with the first connecting member and the other end engaged with the connecting portion. And a first connecting member that is urged by the urging member and that is in constant contact with the floor of the vehicle body. The third connecting member and the connecting portion are integrally rotated. The vehicle seat device according to claim 1.