JP5742537B2 - Automotive seat position adjustment device - Google Patents

Description

  According to the present invention, a driver's seat, a rear seat behind the driver's seat, and a rear view opening area behind the driver's seat (see the lower edge of the back window or the upper surface of the trunk lid in the open car) are provided in the vehicle interior. The present invention relates to a seat position adjusting device for an automobile.

Conventionally, as shown in FIG. 25, a driver's seat 101 as a driver's seat, a rear seat 102 behind the driver's seat 101, and a back window as a rear view opening area behind the driver's seat 101 as shown in FIG. There is an automobile provided with a lower end of 103.
The above-described rear seat 102 has a seat cushion 102C and a seat back 102B, and the seat back 102B is generally inclined in a front-rear and a rear-high shape in order to improve the sitting comfort of the rear seat occupant. .
As described above, when the seat back 102B is tilted, the length of the luggage compartment 104 in the vehicle front-rear direction is shortened by the upper tilted portion of the seat back 102B.

  In order to expand the luggage loading space to an easy-to-use shape, the seat back 102B may be raised from a rearward tilted state indicated by a solid line in FIG. 25 to an upright state indicated by a virtual line β in FIG. As described above, when the seat back 102B is in the upright state, the seating ability of the rear seat occupant is slightly sacrificed, but the luggage compartment 104 is enlarged by the movement from the rearward tilted state of the seat back 102B to the upright state, The loading space can be expanded.

  However, when the seat back 102B is raised to the upright state, the upper end position of the seat back 102B is raised, and the upper end portion of the seat back 102B is connected to the rear mirror 105 and the rear view open area (see the lower end of the back window 103). Since the connecting line X2 is blocked, there is a problem that the rear field of view deteriorates.

  Incidentally, in Patent Document 1, in a rear seat provided with a seat cushion and a seat back, a state in which the seat back is tilted backward and an upright state can be secured, and the rear tilt position of the seat back and the seat back A storage seat for a vehicle is disclosed in which a seat back can be folded onto a seat cushion with a single action from any position in an upright position.

  However, even in the conventional structure disclosed in Patent Document 1, when the seat back is raised upright, the upper end position of the seat back is increased, and there is a problem in that the rear view is deteriorated.

  Further, Patent Document 2 discloses a configuration that allows the seat back to be adjusted up and down with respect to the seat cushion. That is, when an occupant with a small physique lifts up the seat cushion, the height of the seat back becomes relatively low, and a seat state corresponding to the physique of the occupant can be formed.

  The conventional structure disclosed in Patent Document 2 changes the height of the seat back in accordance with the height of the seat cushion so as to correspond to the physique of the occupant. It does not reduce the height of the back.

JP 2009-61834 A Japanese Patent Laid-Open No. 7-25274

  Therefore, the present invention is such that when the rear seat back is substantially upright, the lower end of the seat back is displaced downward with respect to the backward tilt of the seat back, and the seat back is held in this position upright. The seat of an automobile capable of suppressing the height of the seat back when the seat back is upright, and achieving both the loading space expansion in the cargo compartment behind the rear seat and the foot space expansion for the rear seat occupant and the securing of the rear view. An object is to provide a position adjusting device.

Car seat position adjusting device according to the present invention, the vehicle interior, and the driver's seat, and rearview mirror, and behind the rear seat than the driver's seat, in a motor vehicle and a rear view opening area of the rear is provided, the The rear seat includes a seat cushion and a seat back supported by the vehicle body side member, and a supporting means for supporting the seat back to the vehicle body side member includes a first position where the seat back is tilted backward, and a substantially upright first position. And an angle adjusting mechanism that allows a change in inclination angle between the two positions and a holding mechanism that holds the seat back at each of the first and second positions. In both the first and second positions, the lower end of the seat back is at the first position at the second position so that it is below the range connecting the room mirror and the rear view opening area. It is intended to displace the remote downwards.
The above-mentioned rear view open area may be set above the lower edge of the back window or the upper surface of the trunk lid in the open car.
Moreover, you may set to a floor panel, a body side wall, a cross member, or the bracket attached to these in the above-mentioned vehicle body side member.

According to the above configuration, when the seat back is in the first position tilted backward, it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit on. In addition , when the seat back is formed at the substantially upright second position, it is possible to increase the loading space of the luggage compartment behind the rear seat.
In addition, when the seat back of the rear seat is made substantially upright by the angle adjusting mechanism, the lower end of the seat back is displaced downward with respect to the backward tilt of the seat back, and the second seat back is moved by the holding mechanism. Since the height of the seat back is lower than the rear view through the room mirror when the seat back is upright, the loading space of the luggage compartment behind the rear seat can be expanded and and ensuring upright mode achieving legroom expansion of the rear-seat occupant, Ru can achieve both rear securing visibility through the rearview mirror.

In one embodiment of the present invention, the lower portion of the seat back is positioned above the second position at the position where the seat back is lying forward.
The above-mentioned forward lying position of the seat back means a position where the seat back is laid down on the seat cushion.

  According to the above-described configuration, the back of the seat back is almost horizontal without lowering the seat cushion, so the seat cushion may have a fixed structure, and a mechanism such as a link for lowering the seat cushion is reduced or omitted. be able to.

According to another aspect of the present invention, there is provided a seat position adjusting apparatus for an automobile, wherein the vehicle seat includes a driver's seat, a rear seat behind the driver seat, and a rear view opening area behind the driver seat. The supporting means for supporting the seat back on the vehicle body side member includes a first position where the seat back is tilted backward and a substantially upright second position. And a holding mechanism for holding the seat back at each of the first and second positions, and the angle adjusting mechanism includes a lower end of the seat back. The second position is configured to be displaced downward from the first position, and the lower portion of the seat back is positioned above the second position at the position where the seat back is lying forward .

According to the above configuration, when the seat back is in the first position tilted backward, it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit on. In addition, when the seat back is formed at the substantially upright second position, it is possible to increase the loading space of the luggage compartment behind the rear seat.
In addition, when the seat back of the rear seat is made substantially upright by the angle adjusting mechanism, the lower end of the seat back is displaced downward with respect to the backward tilt of the seat back, and the second seat back is moved by the holding mechanism. Since the seat back can be held in an almost upright position, the height of the seat back is restrained when the seat back is upright, and the loading space in the cargo compartment behind the rear seat and the foot space of the rear seat occupant are increased, and the rear view is secured. Can be achieved.
In addition, when another seat exists further rearward of the rear seat, it is possible to achieve both expansion of the occupant's living space of the other seat and ensuring good boarding / exiting performance.
Furthermore, since the back surface of the seat back is almost horizontal without lowering the seat cushion, the seat cushion may have a fixed structure, and a mechanism such as a link for lowering the seat cushion can be reduced or omitted.

  In one embodiment of the present invention, the support means has two link mechanisms connected to the seat back and the vehicle body side as the angle adjusting mechanism.

  According to the above configuration, since two link mechanisms (so-called two-link mechanisms) are employed as the angle adjustment mechanism, a predetermined locus of the seat back can be easily set, and the swing position of the seat back, the lift position, It becomes easy to adjust the front and rear positions of the lower part simultaneously and easily.

According to another aspect of the present invention, there is provided a vehicle seat position adjusting apparatus, further comprising: a driver's seat; a rear seat behind the driver seat; and a rear view opening area behind the driver seat. The supporting means for supporting the seat back on the vehicle body side member includes a first position where the seat back is tilted backward and a substantially upright second position. And a holding mechanism for holding the seat back at each of the first and second positions, and the angle adjusting mechanism includes a lower end of the seat back. Two link machines connected to the seat back and the vehicle body side as the angle adjusting mechanism are configured to be displaced below the first position at the second position. And it has a.

According to the above configuration, when the seat back is in the first position tilted backward, it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit on. In addition, when the seat back is formed at the substantially upright second position, it is possible to increase the loading space of the luggage compartment behind the rear seat.
In addition, when the seat back of the rear seat is made substantially upright by the angle adjusting mechanism, the lower end of the seat back is displaced downward with respect to the backward tilt of the seat back, and the second seat back is moved by the holding mechanism. Since the height of the seat back is lower than the rear view through the room mirror when the seat back is upright, the loading space of the luggage compartment behind the rear seat can be expanded and It is possible to achieve both the upright mode for expanding the foot space for the rear seat occupant and the rear view through the rearview mirror.
In addition, when another seat exists further rearward of the rear seat, it is possible to achieve both expansion of the occupant's living space of the other seat and ensuring good boarding / exiting performance.
Furthermore, since two link mechanisms (so-called two-link mechanisms) are employed as the angle adjusting mechanism, a predetermined locus of the seat back can be easily set, and the swing position of the seat back, the lift position, and the lower front and rear positions At the same time, and easy to adjust.

In one embodiment of the present invention, the support means is connected to the lower portion of the seat back and includes a support arm provided with a swing fulcrum shaft behind the center of the thickness of the lower portion of the seat back in the front-rear direction. The swing fulcrum shaft is provided behind the center of the thickness of the lower portion of the seat back in the front-rear direction at each of the first and second positions .

  According to the above configuration, the swing fulcrum shaft is provided rearward of the center of the thickness in the front-rear direction of the lower portion of the seat back, so that the seat back is substantially upright from the first position where the seat back is tilted backward. When the seat back is displaced to the second position, the lower end of the seat back is automatically displaced downward, and the height position of the upper end of the seat back can be suppressed.

According to another aspect of the present invention, there is provided a vehicle seat position adjusting apparatus, wherein the vehicle seat includes a driver's seat, a rear seat behind the driver seat, and a rear view opening area behind the driver seat. The supporting means for supporting the seat back on the vehicle body side member includes a first position where the seat back is tilted backward and a substantially upright second position. And a holding mechanism for holding the seat back at each of the first and second positions, and the angle adjusting mechanism includes a lower end of the seat back. The second position is configured to be displaced below the first position, and the support means is connected to the lower portion of the seat back and has a thickness in the front-rear direction of the lower portion of the seat back. An angle adjustment mechanism comprising a support arm provided with a swing fulcrum shaft behind the center is provided. The swing fulcrum shaft is located in the front-rear direction of the lower portion of the seat back at each of the first and second positions. It is provided behind the center of thickness.

According to the above configuration, when the seat back is in the first position tilted backward, it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit on. In addition, when the seat back is formed at the substantially upright second position, it is possible to increase the loading space of the luggage compartment behind the rear seat.
In addition, when the seat back of the rear seat is made substantially upright by the angle adjusting mechanism, the lower end of the seat back is displaced downward with respect to the backward tilt of the seat back, and the second seat back is moved by the holding mechanism. Since the height of the seat back is lower than the rear view through the room mirror when the seat back is upright, the loading space of the luggage compartment behind the rear seat can be expanded and It is possible to achieve both the upright mode for expanding the foot space for the rear seat occupant and the rear view through the rearview mirror.
In addition, when another seat exists further rearward of the rear seat, it is possible to achieve both expansion of the occupant's living space of the other seat and ensuring good boarding / exiting performance.
Further, since the swing fulcrum shaft is provided behind the center of the thickness in the front-rear direction of the lower portion of the seat back, the seat back is tilted about the swing fulcrum shaft from the first position where the seat back is inclined to the second position substantially upright. When the seat back is displaced, the lower end of the seat back is automatically displaced downward, and the height position of the upper end of the seat back can be suppressed.

  According to the present invention, when the seat back of the rear seat is in the substantially upright state, the lower end of the seat back is displaced downward with respect to the backward tilt of the seat back, and the seat back is held in the substantially upright state at this position. When the seat back is upright, there is an effect that the height of the seat back is suppressed, and it is possible to achieve both the enlargement of the loading space of the luggage compartment behind the rear seat and the extension of the foot space of the rear seat occupant and the securing of the rear view. .

The side view of the motor vehicle provided with the seat position adjusting device of the present invention Plan view of FIG. 1 is an enlarged side view of the main part of FIG. Side view showing the seat position adjustment device Side view showing the seat back upright mode Side view showing the seat back advance mode Fig. 5 is an enlarged view of the main part of Fig. 5 showing the holding mechanism. (A) is a side view of the backward tilt mode in another embodiment of the seat position adjusting device, (b) is a side view of the upright mode, and (c) is a side view of the forward-turning mode. Rear view showing the arrangement of arrow link viewed from the direction A in (b) of FIG. 8 Side view of backward tilt mode in still another embodiment of the seat position adjusting device Side view of upright mode The principal part enlarged view of FIG. 11 which shows a holding mechanism. (A) is a side view of the backward tilt mode in still another embodiment of the seat position adjusting device, (b) is a side view of the upright mode, and (c) is a side view of the forward-turning mode. Side view of backward tilt mode in still another embodiment of the seat position adjusting device Side view of upright mode Side view of forward mode Side view of backward tilt mode in still another embodiment of the seat position adjusting device Side view of upright mode Side view of midway forward mode Side view of forward mode Side view of backward tilt mode in still another embodiment of the seat position adjusting device Side view of upright mode Side view of midway forward mode Side view of forward mode Side view showing a conventional automobile seat position adjusting device

When the seat back of the rear seat is in a substantially upright state, the lower end of the seat back is displaced downward with respect to the rearward tilt of the seat back, and the seat back is held in this position in a substantially upright state. For the purpose of suppressing the height of the seat back and achieving both a loading space expansion in the rear of the rear seat and an increase in the foot space of the rear seat occupant and securing of the rear view, the driver's seat, In an automobile provided with a rearview mirror, a rear seat behind the driver's seat, and a rear view opening area behind the driver's seat, the rear seat has a seat cushion and a seat back supported by a vehicle body side member, The support means for supporting the seat back to the vehicle body side member allows a change in the tilt angle between the first position where the seat back is tilted backward and the second position which is substantially upright. An angle adjustment mechanism that, the first, together with a holding mechanism for holding the seat back at a second respective position of the angle adjustment mechanism, the seat back is the first, the second of the two positions, This is realized by a configuration in which the lower end of the seat back is displaced below the first position at the second position so as to be below the range connecting the room mirror and the rear view open area .

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawing shows an automobile seat position adjusting device. First, a vehicle body structure will be described with reference to FIG.

In FIG. 1, a dash lower panel (dash panel) 3 that partitions the engine room 1 and the vehicle compartment 2 in the front-rear direction is provided, and a floor panel 4 that extends substantially horizontally toward the rear is integrated with the lower end of the dash lower panel 3. It is connected continuously.
A rear floor 6 (a part of the floor panel) is connected to the rear portion of the floor panel 4 via a kick-up portion 5 that rises upward, and a rear seat pan 7, a spare tire pan 8, And a rear end panel 9 extending upward is integrally or integrally formed at the rear end of the spare tire pan 8.
A rear end cross member 10 is joined and fixed to the rear portion of the rear end panel 9 described above, and a rear end closed section 11 extending in the vehicle width direction is formed between the rear end panel 9 and the rear end cross member 10. A rear bumper 12 is disposed further rearward of 10.

  On the other hand, an engine 13 (or power train) is disposed in the engine room 1 described above, and front side frames 14 extending in the front-rear direction of the vehicle are provided on both the left and right sides of the engine room 1. The rear portion of the front side frame 14 extends rearward and downward along the vehicle outer side of the dash lower panel 3, and a floor frame 15 is provided at the rear end of the front side frame 14 so as to be continuous in the vehicle front-rear direction. Yes.

The upper part of the engine room 1 is covered with a hood 16 so as to be opened and closed, and the upper part of the passenger compartment 2 is covered with a roof panel 17.
Further, a front window glass 18 (front window member) is disposed between the front end of the roof panel 17 and the vicinity of the rear end of the bonnet 16, while a front header 19 is joined and fixed to the lower front end of the roof panel 17. A rear header 20 is joined and fixed to the lower rear end of the panel 17 so as to ensure roof strength.
As shown in FIG. 1 and FIG. 2, a driver's seat 21 as a driver seat, a passenger's seat 21 ′ as a passenger seat, and the front seats 21 and 21 ′ are provided in the above-described passenger compartment 2. A rear seat 22 located rearward is arranged.

  The driver's seat 21 includes a seat cushion 21C, a seat back 21B, and a headrest 21H. The passenger seat 21 'includes a seat cushion 21C', a seat back 21B ', and a headrest 21H'. Similarly, the rear seat 22 includes a seat cushion 22C on which the rear seat occupant is seated, a seat back 22B serving as a backrest surface of the rear seat occupant, and a headrest 21H that holds the head of the rear seat occupant. Yes.

  A luggage compartment 23 is formed at the rear portion of the rear seat 22, and the luggage compartment 23 is covered with a lift gate 24 (which agrees with the rear gate or the rear door) so as to be opened and closed. The lift gate 24 includes an inner panel 25, an outer panel 26, and a back window 27. The lift gate 24 can be opened and closed with a lift gate hinge (not shown) provided at the rear end of the roof panel 17 as a fulcrum. ing.

Incidentally, a fuel tank 28 is disposed outside the rear seat pan 7 and a spare tire 29 is mounted on the spare tire pan 8. A room mirror 30 is attached to the front windshield 18 on the upper compartment side.
1 and 2, 31 is a steering wheel, 32 in FIG. 1 is a front wheel, 33 is a rear wheel, 34 is a door opening for a front seat occupant, and 35 is a door opening for a rear seat occupant.
Further, as shown in FIG. 2, the right-hand drive vehicle is exemplified in this embodiment, but the present invention is not limited to this and may be a left-hand drive vehicle.
Furthermore, as shown in FIG. 1, a driver's seat 21, a rearview mirror 30, a rear seat 22 behind the driver's seat 21, and a lower edge of the back window 27 as a rear viewable area behind the driver's seat 21. As shown by a virtual line in the figure, a line X1 connecting the room mirror 30 and the rear viewable region is set.

  3 is an enlarged side view of the main part of FIG. 1, and FIG. 4 is a side view of the seat position adjusting device. As shown in FIGS. 3 and 4, the upper part of the spare tire 29 mounted on the spare tire pan 8 is A tray 66 and a floor board 36 that can store small items such as tools are provided, and the floor board 36 constitutes the bottom surface of the cargo compartment 23.

As shown in FIGS. 3 and 4, the support means for supporting the seat back 22 </ b> B as a vehicle body side member , for example , on the side wall of the body has a first position where the seat back 22 </ b> B is tilted backward (see FIGS. 3 and 4). An angle adjustment mechanism that allows a change in the inclination angle between the seat back 22B and a substantially upright second position (see FIG. 5), a first position (see FIGS. 3 and 4), and a second position (see FIG. 5). ) At the second position shown in FIG. 5 and the first position shown in FIGS. 3 and 4 at the lower position of the seat back 22B. Since it is configured to be displaced below the position, its specific structure will be described below.

  As shown in FIG. 4, the holding mechanism described above includes a pin P1 provided on the side wall of the body so as to correspond to the upper part of the seat back 22B in the first position inclined backward, and a substantially upright first as shown in FIG. The pin P2 provided on the side wall of the body so as to correspond to the upper portion of the seat back 22B at two positions, and the engagement hole on the side of the seat back 22B into which any one of the pins is engaged, P2 is formed to be able to project and retract in the vehicle width direction when the operation lever 37 is operated.

In this embodiment, when the operation lever 37 is pulled, the pins P1 and P2 are immersed in the vehicle width direction outward to release the lock on the engagement hole on the seat back 22B side.
As shown in FIGS. 4 and 5, a disc 39 that rotates about a support shaft 38 is provided at the lower part of the seat back 22B, and the disc 39 corresponds to the second position of the seat back 22B (see FIG. 5). While the disk 39 is formed with a recess 39a (see FIG. 7), a hook 41 that is constantly urged to the outer periphery of the disk 39 around the support shaft 40 at the rear and lower side of the disk 39 is provided. When standing up at the substantially upright second position shown in FIG. 5, the tip of the hook 41 is engaged with the recess 39a of the disc 39 to hold the second position.
That is, the above-described disk 39 and hook 41 also constitute a holding mechanism, and this hook 41 is also configured to release the lock on the recess 39a of the disk 39 when the operation lever 37 is pulled. ing.
Furthermore, the above-mentioned support means has two link mechanisms connected as an angle adjusting mechanism to the seat back 22B and the vehicle body side.

That is, as shown in FIG. 4, two links L1 and L2 are provided on one side of the seat back 22B. These two links L1 and L2 are provided as a pair on the left and right sides of a single seat back 22B. As shown in FIG. 2, when the rear seat 22 is composed of left and right separate seats, the left rear seat 22 is provided. A total of four links, that is, a total of four links, are provided on the left and right sides of the right rear seat 22 and the left and right sides of the right rear seat 22.
Of the links L1 and L2, the links L1 and L2 (the left side of the left seat and the right side of the right seat) shown in the plan view in FIG. 2 are the body side wall, floor panel, cross member or , Provided between the vehicle body side members such as brackets attached thereto and the seat back frame, and links L1 and L2 (the right side of the left seat, the left side of the right seat) shown in the plan view in FIG. The link) is provided between the bracket 42 erected from the rear seat pan 7 and the seat back frame.
The above-described two-link mechanism including the links L1 and L2 is a mechanism in which one is different from the other in the amount of displacement in the vertical direction and the amount of displacement in the front-rear direction with respect to the seatback coupling portion.

In this embodiment, in the backward tilt mode shown in FIG. 4, the upper link L1 has its link free end side facing backward from the front body side fulcrum, and the lower link L2 is the rear disc 39 side fulcrum. The links L1 and L2 are unequal length links in which the link length of the upper link L1 is large and the link length of the lower link L2 is small. Configured. Here, the above-mentioned link L2 rotates integrally with the disk 39 or rotates synchronously.
Further, the lower front surface of the seat back 22B is positioned relatively rearward from the seat cushion 22C at the second position indicated by the solid line in FIG. 5 relative to the first position indicated by the phantom line in FIG. Yes.
Further, as shown in FIG. 6, the seat back 22B is configured such that the lower part is positioned higher than the second position indicated by the phantom line in the figure at the position where the seat back 22B has fallen forward (see the solid line in FIG. 6). Yes.
In addition, the links L1 and L2 constituting the angle adjusting mechanism described above are configured such that the seat back 22B is in the first position shown in FIG. 4 and the second position shown by a solid line in FIG. The lower end of the seat back 22B is set to the first position at the second position (see FIG. 5) so as to be below the range of the line X1 (see FIG. 1) connecting the rear viewable area (see the lower edge of the back window 27). It is configured to be displaced below the position (see FIG. 4).

The illustrated embodiment is configured as described above, and the operation will be described below.
In the backward tilt mode of the seat back 22B shown in FIG. 4, the seat back 22B is tilted in the front-rear and rear-high shape, so that the sitting comfort of the rear seat occupant can be improved.

To make the seat back 22B in the backward tilt mode shown in FIG. 4 into the substantially upright second position as shown in FIG. 5, first, the operation lever 37 is pulled to lock the seat back 22B by the pin P1. To release.
Then, moving the upper portion of the seat back 22B forward, moving the seat back frame connecting portion of the link L1 downward direction, to move the seat back frame connecting portion of the link L2 is rearward and downward, each of these links L1 , L2 moves in the front-rear direction, and the inclination of the seat back 22B changes from a rearwardly inclined shape to a substantially upright position, and the downward movement of the links L1, L2 suppresses the height of the seat back 22B. From the first position shown in FIG. 4 to the second position shown by the solid line in FIG.

At the second position (see the solid line in FIG. 5), the lower end of the seat back 22B is displaced downward from that at the first position indicated by the phantom line in the figure. Further, in the second position, the lower front surface of the seat back 22B is positioned relatively rearward from the seat cushion 22C than that of the first position.
That is, when the seat back 22B is erected in the upright mode as shown by the solid line in FIG. 5, the lower end of the seat back 22B is lowered downward, so that the height of the seat back 22B can be suppressed, and the seat back 22B Since the lower front of the rear part moves backward, the support position of the lower back of the occupant of the rear seat occupant is lowered, and the posture of the foot part becomes easier.

The second position of the seat back 22B is locked by engaging the pin P2 into the engagement hole on the seat back side and engaging the hook 41 into the recess 39a (see FIG. 7) of the disk 39 . As shown in FIGS. 5 and 7, when the second position is locked, the link L2 faces directly downward, and the concave portion 39a of the disc 39 is located at the lowermost portion of the disc 39. Since the recess 39a is locked by the hook 41, the weight of the seat back 22B can be stably supported.

To bring the seat back 22B forward and down on the seat cushion 22C from the second position of the seat back 22B shown in FIG. 5, first pull the operating lever 37 to unlock the seat back 22B by the pin P2. At the same time, the lock of the disk 39 by the hook 41 is released.
Next, when the upper portion of the seat back 22B is moved forward and downward, the seat back frame connecting portion of the link L1 moves forward, the seat back frame connecting portion of the link L2 moves upward, and the seat back 22B As shown by a solid line in FIG. 6, the seat cushion 22C is overturned to enter the forward-turning mode.

  When the seat back 22B is in the forward-turning mode, the lower portion of the seat back 22B is positioned above that of the second position (see the phantom line in FIG. 6), so another mechanism such as a link that moves the seat cushion 22C downward. Is not necessary, and the back surface of the seat back 22B in the forward mode is substantially horizontal.

  As described above, the vehicle seat position adjusting apparatus according to the first embodiment shown in FIGS. 1 to 7 includes a driver's seat 21, a rear seat 22 behind the driver's seat 21, The rear seat 22 has a seat cushion 22C and a seat back 22B supported by a vehicle body side member, and is provided with a rear view open area (refer to the lower edge of the back window 27). The support means for supporting the vehicle body side member 22B allows a change in the inclination angle between the first position (see FIG. 4) where the seat back 22B is inclined backward and the second position (see FIG. 5) which is substantially upright. An angle adjusting mechanism (see links L1, L2), and a holding mechanism (see pins P1, P2, circular plate 39, hook 41) for holding the seat back 22B at the first and second positions, The angle adjusting mechanism (refer to the links L1 and L2) displaces the lower end of the seat back 22B below the first position at the second position (see FIGS. 1, 4 and 5). .

According to this configuration, when the seat back 22B is in the first position tilted backward (see FIG. 4), it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit. Further, when the seat back 22B is formed in the substantially upright second position (see FIG. 5), it is possible to increase the loading space of the luggage compartment 23 behind the rear seat 22.
That is, as shown in FIG. 3, when the seat back 22B is tilted backward, the length in the front-rear direction of the cargo compartment 23 is Y1, and when the seat back 22B is substantially upright, the length in the front-rear direction is Y2. Therefore, it is possible to increase the loading space of the luggage 23 .
Moreover, when the seat back 22B of the rear seat 22 is made substantially upright (see FIG. 5) by the angle adjusting mechanism (see the links L1 and L2), the lower end of the seat back 22B is lowered with respect to the rearward tilt of the seat back 22B. And the seat back 22B can be held substantially upright in the second position by the above-described holding mechanism, so that the height of the seat back 22B is suppressed when the seat back 22B is upright, and the rear seat 22 It is possible to achieve both the expansion of the loading space of the cargo compartment 23 and the foot space of the rear seat occupant and the securing of the rear view.
That is, since the seat back 22B as a whole (particularly, its center of gravity) is displaced forward and downward with respect to the first position where the seat back 22B is tilted backward at the substantially upright second position, It is possible to achieve both expansion of the room space and securing the rear view.

Further, as shown in FIGS. 1 to 4, the gap between the back surface of the seat back 22 </ b> B and the front end of the floor board 36 includes a first position in which the seat back 22 </ b> B is tilted backward, a second position that is substantially upright, If the positions and lengths of the two links L1, L2 are set so as to be substantially constant, the member covering the gap between the back surface of the seat back 22B and the front end of the floor board 36 can be reduced or omitted. Can do.

  In addition, when a seat is present further rearward of the rear seat 22, it is possible to achieve both expansion of the seat occupant's living space and securing good boarding / exitability.

In the vehicle seat position adjusting apparatus according to the first embodiment, the driver's seat 21, the rearview mirror 30, the rear seat 22 behind the driver's seat 21, and the rear view behind the driver's seat 21 are opened in the passenger compartment 2. in automobile realm (refer back window 27 lower edge) is provided, the rear seat 22 has a seat cushion 22C and a seatback 22B supported on the vehicle body member, the body side member said seat back 22B The support means for supporting the angle adjustment mechanism (see FIG. 4) that tilts the seat back 22B backward and the angle adjustment mechanism that allows a change in the inclination angle between the substantially upright second position (see FIG. 5). Links L1 and L2) and a holding mechanism (see pins P1 and P2, circular plate 39 and hook 41) for holding the seat back 22B at the first and second positions. At the same time, the angle adjusting mechanism (see links L1 and L2) is configured so that the seat back 22B connects the room mirror 30 and the rear view open area at both the first and second positions (the line in FIG. 1). The lower end of the seatback 22B is displaced downward from the first position at the second position so as to be lower than (refer to X1) (see FIGS. 1, 4, and 5).

According to this configuration, when the seat back 22B is in the first position tilted backward (see FIG. 4), it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit. Further, when the seat back 22B is formed in the substantially upright second position (see FIG. 5), it is possible to increase the loading space of the luggage compartment 23 behind the rear seat 22.
Moreover, when the seat back 22B of the rear seat 22 is made substantially upright (see FIG. 5) by the angle adjusting mechanism (see the links L1 and L2), the lower end of the seat back 22B is lowered with respect to the rearward tilt of the seat back 22B. And the seat back 22B can be held substantially upright at the second position by the above-described holding mechanism, so that the height of the seat back 22B is set via the room mirror 30 when the seat back 22B is upright. Since it is below the rear field of view, it is possible to achieve both the upright mode for expanding the loading space of the luggage room 23 behind the rear seat 22 and the foot space of the rear seat occupant and the rear field of view through the rearview mirror 30. Can be planned.
Further, the lower front surface of the seat back 22B is positioned relatively rearward from the seat cushion 22C in the second position (see FIG. 5) with respect to the first position (see FIG. 4) (FIG. 4). FIG. 5).

According to this configuration, the lower front surface of the seat back 22B is at the second position (see FIG. 5) in which the seat back 22B is substantially upright with respect to the first position (see FIG. 4) where the seat back 22B is tilted backward. Since it is located relatively rearward, the space in the front-rear direction of the seating surface of the seat cushion 22C is increased, and the back seat occupant's tightness can be mitigated.
In addition, at the position where the seat back 22B has fallen forward (see FIG. 6), the lower portion is positioned above the second position (see FIG. 5) (see FIGS. 5 and 6).

The above-described forward lying position of the seat back 22B means a position where the seat back 22B is fallen on the seat cushion 22C.
According to this configuration, since the back surface of the seat back 22B becomes almost horizontal without lowering the seat cushion 22C, the seat cushion 22C may have a fixed structure, and a mechanism for lowering the seat cushion 22C is omitted. Can do.
Furthermore, the support means has two link mechanisms (see links L1 and L2) connected to the seat back 22B and the vehicle body side as the angle adjusting mechanism.
According to this configuration, since two link mechanisms, so-called two link mechanisms (see links L1 and L2), are adopted as the angle adjustment mechanism, a predetermined locus of the seat back 22B can be easily set, and the seat back 22B. The swing position, the lift position, and the lower front-rear position can be adjusted simultaneously and easily.

  8 and 9 show another embodiment of the vehicle seat position adjusting device, FIG. 8A is a side view in the backward tilt mode, FIG. 8B is a side view in the substantially upright mode, FIG. 8C is a side view in the forward mode, and FIG. 9 is a rear view showing the link arrangement structure as viewed from the direction of arrow A in FIG.

In the second embodiment, a support shaft 43 is provided at the rear of the upper part of the seatback 22B in a rearward tilt state, and a bracket 44 and an arm 45 are attached to the support shaft 43. Each of the bracket 44 and the arm 45 is an I-type. The strikers 46 and 47 are provided. Here, the above-described support shaft 43, bracket 44, and I-type striker 46 are fixed to the body side wall, and the arm 45 is configured to be rotatable about the support shaft 43 as a fulcrum.
Further, a latch 48 is provided on the upper portion of the seat back 22B, and the latch 48 and the striker 46 are engaged to hold the seat back 22B in the first position tilted backward as shown in FIG. By engaging the latch 48 and the striker 47, the seat back 22B is configured to be held in the substantially upright second position as shown in FIG. 8B.
That is, the above-described latch 48 and strikers 46 and 47 constitute a holding mechanism.
Also, two links L3 and L4 (two links per side of the seat back 22B) are provided as angle adjustment mechanisms, and the fulcrums a and b on the vehicle body side of these links L3 and L4 are both in the first position. It is located behind the seat back 22B.

As shown in the rear view in FIG. 9, the above-mentioned fulcrums a and b are constituted by link pins 49 and 50, and these link pins 49 and 50 are pivotally attached to a bracket 51 as a vehicle body side member.
Further, the free ends of the links L3 and L4 are pivotally attached to the seatback frame in the seatback 22B using link pins 52 and 53 as shown in FIG.
The two links L3 and L4 constituting the angle adjusting mechanism described above are displaced downward from the first position shown in FIG. 8A at the second position shown in FIG. 8B at the lower end of the seat back 22B. It is something to be made.

As shown in FIG. 8A, the two links L3 and L4 of the second embodiment are unequal so that the link length of the upper link L3 is large and the link length of the lower link L4 is small. A long link is used.
Also in the second embodiment, as in the first embodiment, the lower front surface of the seat back 22B is relatively rearward from the seat cushion 22C in the second position where it is substantially upright with respect to the first position in the backward tilt mode. As shown in FIG. 8 (c), the lower portion of the seat back 22B is positioned higher than the second position at the position where the seat back 22B is lying forward on the upper portion of the seat cushion 22C. Configured to be located.

The operation of the second embodiment configured as described above will be described.
In order to achieve the substantially upright second position shown in FIG. 8B from the first position in the backward tilt mode shown in FIG. 8A, first the engagement between the latch 48 and the striker 46 is released, Next, when the upper portion of the seat back 22B is moved forward of the vehicle, the links L3 and L4 are both turned counterclockwise as shown in the figure, and the free end portions of the links L3 and L4 are respectively moved downward.

However, while the link L4 is directed directly below, the link L3 does not rotate to the position immediately below. The angle of the seat back 22B is changed by the difference in the front-rear direction when the links L3 and L4 are rotated, and the seat back 22B becomes the substantially upright second position shown in FIG.
In this second position, the substantially upright mode can be maintained by engaging the striker 47 of the free end portion of the arm 45 with the latch 48. In the above-described upright mode, the lower end of the seat back 22B moves downward, so that the height of the seat back 22B can be suppressed and a rear view can be secured.
Further, since the striker 47 provided at the free end portion of the arm 45 is engaged with the latch 48 to hold the second position of the seat back 22B, the seat back 22B in the second position has the door opening 35 in the side view. Even if it partially overlaps, the seat back 22B can be held by the holding mechanism.

  In order to achieve the forward-turning mode shown in FIG. 8C from the second position in the substantially upright mode shown in FIG. 8B, first the engagement between the latch 48 and the striker 47 is released, and then When the upper portion of the seat back 22B is moved forward and downward, the link L3 does not move, while the link L4 rotates so that the free end side thereof moves upward about the fulcrum b, so that the seat back 22B is seated. As shown in FIG. 8 (c), the seat back 22B is lowered above the second position shown in FIG. 8 (b) at the position where the seat back 22B falls forward on the upper portion of the seat cushion 22C. Will be located.

  In the second embodiment shown in FIGS. 8 and 9, the other configurations, operations, and effects are almost the same as those in the first embodiment. Therefore, in FIGS. The same reference numerals are assigned and detailed description thereof is omitted.

  10 to 12 show still another embodiment of the vehicle seat position adjusting device, FIG. 10 is a side view in the backward tilt mode, FIG. 11 is a side view in the substantially upright mode, and FIG. FIG.

In the third embodiment, a support arm 54 as an angle adjusting mechanism connected to the lower portion of the seat back 22B is provided, and the swing fulcrum shaft 55 of the support arm 54 is used as the center of the thickness in the front-rear direction of the lower portion of the seat back 22B. It is provided behind.
Support arm 54 described above, the seat back after傾時shown in FIG. 10, it is mounted to direct the swing supporting shaft 55 obliquely upward.
The support arm 54 is attached to the seat back frame using a plurality of bolts 56, 56 as attachment members. Further, a gear 57 is provided on the swing fulcrum shaft 55 described above, and the gear 57 is configured to be appropriately locked by a hook 60 pivotally supported on a bracket 59 at the rear portion of the seat cushion frame 58.

In this embodiment, the hook 60 described above is spring-biased so as to mesh with the external teeth of the gear 57 at all times, and the hook 60 is removed from the external teeth of the gear 57 when the operation lever (not shown) is pulled. Is configured to cancel.
That is, the above-described gear 57 and hook 60 constitute a holding mechanism, and the seat back 22B is moved to the first position in the rearward tilt state shown in FIG. 10 and the substantially upright second position shown in FIG. It is to hold.

The operation of the third embodiment configured as described above will be described.
In order to change from the first position in the backward tilt mode shown in FIG. 10 to the substantially upright second position shown in FIG. 11, first, pull the operation lever (not shown) and unlock the external teeth of the gear 57 by the hook 60. Next, when the upper portion of the seat back 22B is moved forward of the vehicle, the support arm 54 that rotates about the swing fulcrum shaft 55 moves downward, so that the seat back 22B is substantially upright as shown in FIG. Since the lower end of the seat back 22B is lowered downward by the support arm 54 that moves downward while being in the second position, the height of the seat back 22B can be suppressed and the rear view can be secured.

When the pulling operation of the operation lever (not shown) is stopped at the second position in FIG. 11, the hook 60 meshes with the external teeth of the gear 57 due to the spring bias, so that the seat back 22B is held by the holding mechanism including the hook 60 and the gear 57. It can be held in a substantially upright state (second position).
As described above, in the third embodiment shown in FIGS. 10 to 12, the support means is connected to the lower portion of the seat back 22B as the angle adjusting mechanism (see the support arm 54), and the lower portion of the seat back 22B is connected. A swing fulcrum shaft 55 is provided behind the center of the thickness in the front-rear direction (see FIGS. 10 to 12).

  According to this configuration, since the swing fulcrum shaft 55 is provided behind the center of the thickness in the front-rear direction under the seat back 22B, the seat back 22B is tilted backward with the swing fulcrum shaft 55 as the center. When the position (see FIG. 10) is displaced to the substantially upright second position (see FIG. 11), the lower end of the seat back 22B is automatically displaced downward to suppress the height position of the upper end of the seat back 22B. it can. The third embodiment is particularly effective for a high-grade rear seat in which the seat back 22B has a large thickness in the front-rear direction.

  In the third embodiment shown in FIG. 10, FIG. 11 and FIG. 12, the other configurations, operations and effects are almost the same as those in the previous embodiment. Are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 13 shows still another embodiment of the vehicle seat position adjusting device, FIG. 13 (a) is a side view showing the first position tilted backward, and FIG. 13 (b) shows the substantially upright second position. FIG. 13C is a side view showing a state in which the seat back 22B is moved forward to the upper portion of the seat cushion 22C.

In the fourth embodiment, the swing fulcrum shaft 55 of the support arm 54 is located behind the center line of the front and rear thickness of the seat back 22B and from the lower end of the seat back 22B at the first and second positions. The support arm 54 is provided so as to be directed obliquely downward and forward from the swing fulcrum shaft 55, and the free end portion of the support arm 54 is attached to a seat back frame using an attachment member such as a bolt 56. It is fixed to.
With this configuration, the free end portion of the support arm 54 (the bolt 56 of the bolt 56) is formed when the rearwardly inclined first position shown in FIG. 13A is changed to the substantially upright second position shown in FIG. Since the position reference) moves downward and rearward, in the substantially upright mode, the lower end of the seat back 22B is lowered and the lower front surface of the seat back 22B is retracted.

As described above, when the lower end of the seat back 22B is lowered downward at the second position of the seat back 22B, the height of the seat back 22B is suppressed and the rear view can be secured.
Further, since the lower front surface of the seat back 22B is retracted rearward, the space in the front-rear direction of the seat surface of the seat cushion 22C is increased, and the tightness of the rear seat occupant can be reduced.
In addition, in order to achieve the forward-turning mode shown in (c) of FIG. 13 from the substantially upright second position shown in (b) of FIG. The free end portion of the arm 54 moves rearward, and the seat back 22B can be laid down on the seat cushion 22C.

  In the fourth embodiment shown in FIG. 13 as well, the other configurations, operations, and effects are almost the same as those of the third embodiment. Therefore, the same reference numerals in FIG. Although detailed description thereof is omitted, in the fourth embodiment, the holding mechanism can be appropriately selected from any of the holding mechanisms shown in the first to third embodiments.

  14 to 16 show still another embodiment of the vehicle seat position adjusting device, FIG. 14 is a side view showing the first position tilted backward, FIG. 15 is a side view showing the substantially upright second position, and FIG. FIG. 4 is a side view showing a forward movement mode.

In the fifth embodiment, a sideways T-shaped slit S1 is formed on the vehicle body side facing the lower side surface of the seat back 22B, while the seat back frame of the seat back 22B is positioned in the above-described slit S1. The pin P3 is protruded and fixed.
Further, a stopper 61 that locks the movement of the pin P3 so as to be unlocked is provided on the vehicle body side. The stopper 61 is disposed in the holder 62 so as to be able to project and retract. The stopper 61 is always urged in the locking direction by the compression spring 63 in the holder 62 and the stopper 61 is immersed in the holder 62 when the operation lever 37 is pulled. Thus, the stopper 61 is configured to release the lock.
Further, below the slits S1 to the holder 62, a link L5 for connecting the vehicle body side and the seat back frame at the lower part of the seat back 22B is provided.

In the fifth embodiment, the slit S1, the pin P3, and the link L5 constitute an angle adjusting mechanism, and this angle adjusting mechanism includes a first position in which the seat back 22B is tilted rearward as shown in FIG. 14, and FIG. The lower end of the seat back 22B is allowed to be displaced downward from the first position (see FIG. 14) at the second position (see FIG. 15). It is configured.
Further, the above-described stopper 61 constitutes a holding mechanism, and the stopper 61 is configured to hold the seat back 22B at each of the above-described first and second positions.
Further, the lower front surface of the seat back 22B is configured to be positioned relatively rearward from the seat cushion 22C in the second position (see FIG. 15) with respect to the first position (see FIG. 14).
Further, as shown in FIG. 16, the lower portion of the seat back 22 </ b> B is positioned above the second position (see FIG. 15) at the position where the seat back 22 </ b> B has fallen forward.

The operation of the fifth embodiment configured as described above will be described below.
In the rearwardly inclined first position shown in FIG. 14, the pin P3 is located above the upper and lower groove portions (vertical groove portions) of the slit S1, and the movement of the pin P3 is restricted by the stopper 61. That is, the first position of the seat back 22B is held by the stopper 61 as a holding mechanism.

  When the seat back 22B in the first position shown in FIG. 14 is set to the substantially upright second position shown in FIG. 15, first, the operation lever 37 is pulled to release the lock of the pin P3 by the stopper 61. .

Next, when the upper portion of the seat back 22B is moved forward, the pin P3 moves downward along the slit S1, and the link L5 rotates downward and rearward. As shown in FIG. 22B can be erected substantially upright.
At this time, since the lower portion of the seat back 22B moves downward, the height of the seat back 22B is suppressed, and a rear view can be secured. If the pulling operation of the operation lever 37 is stopped at the second position of the seat back 22B, the upper portion of the pin P3 located at the lower portion of the upper and lower groove portions of the slit S1 is restricted by the stopper 61, so that the seat back 22B is held at the second position. be able to.

When the seat back 22B at the second position shown in FIG. 15 is in the forward-turning mode shown in FIG. 16, first, the operation lever 37 is pulled to unlock the pin P3 by the stopper 61.
Next, when the upper portion of the seat back 22B is moved forward and downward, the pin P3 moves forward along the lateral groove portion of the slit S1, and the link L5 rotates upward, as shown in FIG. The seat back 22B can be laid down on the seat cushion 22C to establish the forward-turning mode.

  As described above, the vehicle seat position adjusting apparatus according to the fifth embodiment shown in FIGS. 14 to 16 includes a driver's seat 21 (see FIG. 1) and a rear side of the driver's seat 21 in the passenger compartment 2. In an automobile provided with a rear seat 22 and a rear view opening area behind it (see the lower edge of the back window 27), the rear seat 22 has a seat cushion 22C supported by a vehicle body side member and a seat back 22B. The supporting means for supporting the seat back 22B on the vehicle body side member is between a first position (see FIG. 14) where the seat back 22B is tilted backward and a second position (see FIG. 15) that is substantially upright. An angle adjustment mechanism (see pin P3, slit S1, and link L5) that allows a change in inclination angle, and a holding mechanism (stop) that holds the seat back 22B at the first and second positions. 61), and the angle adjusting mechanism is configured to displace the lower end of the seat back 22B below the first position (see FIG. 14) at the second position (see FIG. 15) (FIG. 14). 15).

According to this configuration, when the seat back 22B is in the first position tilted backward (see FIG. 14), it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit on. Further, when the seat back 22B is formed in the substantially upright second position (see FIG. 15), it is possible to increase the loading space of the luggage compartment 23 behind the rear seat 22.
Moreover, when the seat back 22B of the rear seat 22 is made substantially upright by the angle adjusting mechanism, the lower end of the seat back 22B is displaced downward with respect to the backward tilt of the seat back 22B, and the holding mechanism (stopper) 61), the seat back 22B can be held substantially upright in the second position, so that when the seat back 22B stands upright, the height of the seat back 22B is suppressed, and the loading space of the luggage compartment 23 behind the rear seat 22 is reduced. It is possible to achieve both expansion and expansion of the foot space for the rear seat occupant and securing the rear view.

  In the fifth embodiment shown in FIGS. 14 to 16, other configurations, operations, and effects are almost the same as those in the previous embodiment. Therefore, in FIGS. A detailed description thereof will be omitted.

  17 to 20 show still another embodiment of an automobile seat position adjusting device, FIG. 17 is a side view showing a first position tilted rearward, FIG. 18 is a side view showing a substantially upright second position, and FIG. Is a side view of the forward-middle mode, and FIG. 20 is a side view of the forward-move mode.

In the sixth embodiment, a side-view L-shaped slit S2 is formed on the vehicle body side facing the lower end side surface of the seat back 22B, while the seat back frame of the seat back 22B is positioned in the above-described slit S2. The pin P4 is fixed so as to project.
Further, a pair of front and rear movable stoppers 64 and 65 for locking the movement of the pin P4 so as to be unlockable are provided on the vehicle body side so as to be separated in the front-rear direction. Each of these movable stoppers 64 and 65 is disposed so as to be able to project and retract in the holder, and is always urged in the locking direction by a compression spring in the holder, and at the time of pull operation of the operation lever 37, the two movable stoppers 64, 65 65 is simultaneously immersed in the holder so that the lock by the movable stoppers 64 and 65 is released.

  Here, of the pair of front and rear movable stoppers 64 and 65, the movable stopper 64 located on the front side is provided at a position to prevent the pin P4 from moving downward at the first backward position as shown in FIG. The movable stopper 65 located on the rear side of the pair of front and rear movable stoppers 64 and 65 is provided at a position that prevents the rearward movement of the pin P4 in the substantially upright second position as shown in FIG.

However, the tip of the movable stopper 65 described above is formed in a tapered surface having a front and rear low shape so as to allow the pin P4 to move back and forth when the seat back 22B stands from FIG. 19 to FIG. It is composed.
Further, a link L6 that connects the vehicle body side and the seat back frame at the lower part of the seat back 22B is provided above the slit S2.

In the sixth embodiment, the slit S2, the pin P4, and the link L6 constitute an angle adjusting mechanism, and this angle adjusting mechanism includes a first position in which the seat back 22B is tilted backward as shown in FIG. 17, and FIG. The lower end of the seat back 22B is allowed to be displaced below the first position (see FIG. 17) at the second position (see FIG. 18). It is configured.
Further, the movable stoppers 64 and 65 constitute a holding mechanism, and the movable stoppers 64 and 65 constitute the seat back 22B at the first and second positions.
Further, the lower front surface of the seat back 22B is configured to be positioned relatively rearward from the seat cushion 22C in the second position (see FIG. 18) with respect to the first position (see FIG. 17).

The operation of the sixth embodiment configured as described above will be described below.
17, the pin P4 is located at the front end of the slit S2, and the movement of the pin P4 is restricted by the movable stopper 64. That is, the first position of the seat back 22B is held by the movable stopper 64 as a holding mechanism.

When the seat back 22B in the first position shown in FIG. 17 is formed into the substantially upright second position shown in FIG. 18, first, the operation lever 37 is pulled to release the lock of the pin P4 by the movable stopper 64. To do. Note that when the operation lever 37 is pulled, the movable stoppers 64 and 65 are simultaneously moved downward in the unlocking direction.
Next, when the upper part of the seat back 22B is moved forward, the pin P4 moves downward along the slit S2 and the link L6 rotates downward, so that the seat back 22B is moved as shown in FIG. Can stand upright.
At this time, since the lower part of the seat back 22B moves downward, the height of the seat back 22B is suppressed and a rear view can be secured. When the pulling operation of the operation lever 37 is stopped at the second position of the seat back 22B, the pin P4 located in the middle of the slit S2 in the front-rear direction is restricted by the movable stoppers 64 and 65 from both front and rear directions, and the seat back 22B is moved to the second position. Can be held.

When the seat back 22B at the second position shown in FIG. 18 is set to the forward movement mode of FIG. 20 through the forward movement halfway mode of FIG. 19, first, the operation lever 37 is pulled to move the movable stopper 64. , 65 unlocks the pin P4.
Next, when the upper portion of the seat back 22B is moved forward and downward, the pin P4 moves along the slit S2 from the position of FIG. 19 to the rear end of the slit S2 as shown in FIG. 19 is rotated downward from the position of FIG. 19 as shown in FIG. 20, so that the seat back 22B can be laid down on the seat cushion 22C and the forward-turning mode shown in FIG. 20 can be achieved.

  As described above, the vehicle seat position adjusting apparatus according to the sixth embodiment shown in FIGS. 17 to 20 includes a driver's seat 21 (see FIG. 1) in the passenger compartment 2 and a rear side of the driver's seat 21. In an automobile provided with a rear seat 22 and a rear view opening area behind it (see the lower edge of the back window 27), the rear seat 22 has a seat cushion 22C supported by a vehicle body side member and a seat back 22B. The supporting means for supporting the seat back 22B on the vehicle body side member is between a first position (see FIG. 17) in which the seat back 22B is tilted backward and a substantially upright second position (see FIG. 18). An angle adjustment mechanism (see slit S2, pin P4, link L6) that allows a change in inclination angle, and a holding mechanism (movable shoe) that holds the seat back 22B at each of the first and second positions. And the angle adjusting mechanism displaces the lower end of the seat back 22B below the first position (see FIG. 17) at the second position (see FIG. 18). (See FIGS. 1, 17 and 18).

According to this configuration, when the seat back 22B is in the first position tilted backward (see FIG. 17), it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit on. Further, when the seat back 22B is formed in the substantially upright second position (see FIG. 18), it is possible to increase the loading space of the luggage compartment 23 behind the rear seat 22.
Moreover, when the seat back 22B of the rear seat 22 is made substantially upright by the above-described angle adjusting mechanism (see FIG. 18), the lower end of the seat back 22B is displaced downward with respect to the backward tilt of the seat back 22B, and the above-mentioned Since the seat back 22B can be held substantially upright in the second position (see FIG. 18) by the holding mechanism, the height of the seat back 22B is suppressed when the seat back 22B is upright, and the load behind the rear seat 22 is reduced. It is possible to achieve both expansion of the loading space of the chamber 23 and expansion of the foot space of the rear seat occupant and securing of the rear view.
In addition, when a seat is present further rearward of the rear seat 22, it is possible to achieve both expansion of the seat occupant's living space and securing good boarding / exitability.

  In the sixth embodiment shown in FIGS. 17 to 20, other configurations, operations, and effects are almost the same as those of the previous embodiment. Therefore, in FIGS. A detailed description thereof will be omitted.

21 to 24 show still another embodiment of an automobile seat position adjusting device, FIG. 21 is a side view showing a first position tilted backward, FIG. 22 is a side view showing a substantially upright second position, and FIG. FIG. 24 is a side view of the forward and forward mode, and FIG. 24 is a side view of the forward mode.
In the seventh embodiment, the elements 37, 64, 65, S2, and P4 are substantially the same as those in the sixth embodiment, and thus the same reference numerals are given and detailed descriptions thereof are omitted.

In the seventh embodiment, instead of the link L6 of the sixth embodiment, a vehicle body side slit S3 and a seat back 22B side pin P5 are used.
The above-described slit S3 has an arcuate shape in a side view provided on the vehicle body side so as to face the lower side surface of the seat back 22B, and the above-mentioned pin P5 is positioned in the slit S3. The pin P5 is protruded from the back frame, and the pin P5 is fixed to the seat back frame.

In the seventh embodiment, the slits S2 and S3 and the pins P4 and P5 constitute an angle adjusting mechanism. The angle adjusting mechanism includes a first position where the seat back 22B is tilted rearward as shown in FIG. 22 is allowed to change in inclination angle with respect to the substantially upright second position shown in FIG. 22, and the lower end of the seat back 22B is displaced downward from the first position (see FIG. 21) at the second position (see FIG. 22). It is configured as follows.
Further, the above-described stoppers 64 and 65 constitute a holding mechanism, and the movable stoppers 64 and 65 are configured to hold the seat back 22B at the above-described first and second positions.
Further, the lower front surface of the seat back 22B is configured to be positioned relatively rearward from the seat cushion 22C in the second position (see FIG. 22) with respect to the first position (see FIG. 21).

The operation of the seventh embodiment configured as described above will be described below.
21, the pin P5 is located at the upper end of the slit S3, and the pin P4 is located at the front end of the slit S2. The pin P4 is a movable stopper 64. That movement is regulated. That is, the first position of the seat back 22B is held by the movable stopper 64 as a holding mechanism.

When the seat back 22B in the first position shown in FIG. 21 is formed into the substantially upright second position shown in FIG. 22, first, the operation lever 37 is pulled to release the lock of the pin P4 by the movable stopper 64. To do. Note that when the operation lever 37 is pulled, the movable stoppers 64 and 65 are simultaneously moved downward in the unlocking direction.
Next, when the upper portion of the seat back 22B is moved forward, the pin P5 moves along the slit S3 to the middle portion in the vertical direction, and the pin P4 moves downward along the slit S2, so that FIG. As shown, the seat back 22B can be erected substantially upright.
At this time, since the lower part of the seat back 22B moves downward, the height of the seat back 22B is suppressed and a rear view can be secured. When the pulling operation of the operation lever 37 is stopped at the second position of the seat back 22B, the pin P4 located in the middle of the slit S2 in the front-rear direction is restricted by the movable stoppers 64 and 65 from both front and rear directions, and the seat back 22B is moved to the second position. Can be held.

When the seat back 22B at the second position shown in FIG. 22 is brought into the forward-turning mode of FIG. 24 through the forward-turning halfway mode of FIG. 23, the operation lever 37 is first pulled to move the movable stopper 64. , 65 unlocks the pin P4.
Next, when the upper portion of the seat back 22B is moved forward and downward, the pin P5 moves along the slit S3 from the position of FIG. 23 to the lower end of the slit S3 as shown in FIG. Since it moves from the position of FIG. 23 along the slit S2 to the rear end of the slit S2, as shown in FIG. 24, the seat back 22B is laid down on the seat cushion 22C, and the forward mode shown in FIG. 24 is achieved. be able to.

Thus, the vehicle seat position adjusting apparatus according to the seventh embodiment shown in FIGS. 21 to 24 includes a driver's seat 21, a rear seat 22 behind the driver's seat 21, The rear seat 22 has a seat cushion 22C and a seat back 22B supported by a vehicle body side member, and is provided with a rear view open area (refer to the lower edge of the back window 27). The support means for supporting the vehicle body side member 22B allows a change in the inclination angle between the first position (see FIG. 21) where the seat back 22B is inclined backward and the second position (see FIG. 22) which is substantially upright. Angle adjustment mechanism (see slits S2, S3, pins P4, P5) and a holding mechanism (movable stopper 64, holding the seat back 22B at the first and second positions). 5), and the angle adjusting mechanism displaces the lower end of the seat back 22B below the first position (see FIG. 21) at the second position (see FIG. 22) (FIG. 1). , See FIGS.
According to this configuration, when the seat back 22B is in the first position tilted backward (see FIG. 21), it is possible to ensure a tilt mode in which the rear seat occupant is comfortable to sit. Further, when the seat back 22B is formed in the substantially upright second position (see FIG. 22), it is possible to increase the loading space of the luggage compartment 23 behind the rear seat 22.

Moreover, when the seat back 22B of the rear seat 22 is made substantially upright (see FIG. 22) by the angle adjusting mechanism (see slits S2, S3 and pins P4, P5), the lower end of the seat back 22B is positioned behind the seat back 22B. Since the seat back 22B can be held substantially upright at the second position by the above-described holding mechanism (see the movable stoppers 64 and 65), the seat back 22B can be held upright when the seat back 22B is upright. By suppressing the height of the seat back 22B, it is possible to achieve both expansion of the loading space of the luggage compartment 23 behind the rear seat 22, expansion of the foot space of the rear seat occupant, and securing of the rear view.
In addition, when a seat is present further rearward of the rear seat 22, it is possible to achieve both expansion of the seat occupant's living space and securing good boarding / exitability.

  In the seventh embodiment shown in FIGS. 21 to 24, the other configurations, operations, and effects are almost the same as those in the previous embodiment. Therefore, in FIGS. The detailed description is omitted.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The driver seat of this invention corresponds to the driver's seat 21 of the embodiment,
Similarly,
The support means corresponds to the angle adjustment mechanism and the holding mechanism,
The angle adjustment mechanism includes the links L1 and L2 of the first embodiment, the links L3 and L4 of the second embodiment, the support arm 54 of the third and fourth embodiments, the slit S1 of the fifth embodiment, the pin P3, the link L5, and the sixth embodiment. Corresponding to the slit S2, the pin P4, the link L6, the slits S2, S3 and the pins P4, P5 of Example 7,
The holding mechanism includes the pins P1 and P2, the disc 39, the hook 41 of the first embodiment, the strikers 46 and 47 of the second embodiment, the latch 48, the gear 57 of the third embodiment, the hook 60, and the stopper 61 of the fifth embodiment. Corresponding to the movable stoppers 64 and 65 of Examples 6 and 7,
The present invention is not limited to the configuration of the above-described embodiment.

  For example, when the seat position adjusting device having the above-described configuration is applied to an open car, the rear view open area may be set above the upper surface of the trunk lid.

  Further, in the first embodiment, the gap between the back surface of the seat back and the front end of the floor board is substantially constant at the first position where the seat back is tilted backward, the second position where the seat back is substantially upright, and when the vehicle is tilted forward. The positions and lengths of the two links are set in the above, but the positions and shapes of the links and slits may be similarly set in other embodiments in which one or both of the links are slits.

2 ... Vehicle compartment 21 ... Driver's seat (driver's seat)
22 ... Rear seat 22B ... Seat back 22C ... Seat cushion 30 ... Room mirror 39 ... Disk (holding mechanism)
41 ... Hook (holding mechanism)
46, 47 ... striker (holding mechanism)
48 ... Latch (holding mechanism)
54. Support arm (angle adjustment mechanism)
55 ... Oscillating fulcrum shaft 57 ... Gear (holding mechanism)
60 ... Hook (holding mechanism)
61 ... Stopper (holding mechanism)
64, 65 ... Movable stopper (holding mechanism)
L1, L2, L3, L4, L5, L6 ... Link (angle adjustment mechanism)
P1, P2 ... Pin (holding mechanism)
P3, P4, P5 ... Pin (Angle adjustment mechanism)
S1, S2, S3 ... Slit (angle adjustment mechanism)

Claims (7)

In a vehicle provided with a driver's seat, a rearview mirror, a rear seat behind the driver's seat, and a rear view opening area behind the driver's seat in the passenger compartment,
The rear seat has a seat cushion and a seat back supported by the vehicle body side member,
Support means for supporting the seat back to the vehicle body side member,
An angle adjustment mechanism that allows a change in the inclination angle between a first position where the seat back is inclined backward and a substantially upright second position;
A holding mechanism for holding the seat back at each of the first and second positions,
The angle adjustment mechanism is configured such that the lower end of the seat back is set at a second position so that the seat back is below a range connecting the room mirror and the rear view opening area at both the first and second positions . An automobile seat position adjusting device characterized in that the position is displaced below the first position. At the position where the seat back is lying down forward, the lower part is located above the second position.
The vehicle seat position adjusting device according to claim 1 . In a vehicle in which a driver's seat, a rear seat behind the driver's seat, and a rear view opening area behind the driver's seat are provided in the passenger compartment,
The rear seat has a seat cushion and a seat back supported by the vehicle body side member,
Support means for supporting the seat back to the vehicle body side member,
An angle adjustment mechanism that allows a change in the inclination angle between a first position where the seat back is inclined backward and a substantially upright second position;
A holding mechanism for holding the seat back at each of the first and second positions,
The angle adjustment mechanism is configured to displace the lower end of the seat back at a second position below the first position,
At the position where the seat back is lying down forward, the lower part is located above the second position.
Auto car seat position adjusting device. The vehicle seat position adjustment according to any one of claims 1 to 3, wherein the support means includes two link mechanisms connected to the seat back and the vehicle body as the angle adjustment mechanism. apparatus. In a vehicle in which a driver's seat, a rear seat behind the driver's seat, and a rear view opening area behind the driver's seat are provided in the passenger compartment,
The rear seat has a seat cushion and a seat back supported by the vehicle body side member,
Support means for supporting the seat back to the vehicle body side member,
An angle adjustment mechanism that allows a change in the inclination angle between a first position where the seat back is inclined backward and a substantially upright second position;
A holding mechanism for holding the seat back at each of the first and second positions,
The angle adjustment mechanism is configured to displace the lower end of the seat back at a second position below the first position,
The support means has two link mechanisms connected to the seat back and the vehicle body side as the angle adjustment mechanism.
Auto car seat position adjusting device. The support means includes an angle adjustment mechanism that is connected to the lower portion of the seat back and includes a support arm provided with a swing fulcrum shaft behind the center of the thickness in the front-rear direction of the lower portion of the seat back. ,
The swing fulcrum shaft is in the first and second respective position, the seat back lower part of the vehicle seat position adjusting device in the longitudinal direction of <br/> claims provided behind the center of thickness 1 wherein. In a vehicle in which a driver's seat, a rear seat behind the driver's seat, and a rear view opening area behind the driver's seat are provided in the passenger compartment,
The rear seat has a seat cushion and a seat back supported by the vehicle body side member,
Support means for supporting the seat back to the vehicle body side member,
An angle adjustment mechanism that allows a change in the inclination angle between a first position where the seat back is inclined backward and a substantially upright second position;
A holding mechanism for holding the seat back at each of the first and second positions,
The angle adjustment mechanism is configured to displace the lower end of the seat back at a second position below the first position,
The support means includes an angle adjustment mechanism that is connected to the lower portion of the seat back and includes a support arm provided with a swing fulcrum shaft behind the center of the thickness in the front-rear direction of the lower portion of the seat back. ,
The swing fulcrum shaft is provided behind the center of the thickness in the front-rear direction of the lower portion of the seat back at each of the first and second positions.
Automobile seat position adjustment device.

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