JPH0322024Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a seat device for an automobile.

(Prior art) Conventionally, in van-type automobiles, seats are arranged in three rows in the longitudinal direction of the vehicle body, and if necessary, for example, seat backs of middle seats located in the second row and rear seats located in the third row are arranged. This is a so-called full-flat seat in which a substantially flat floor surface is formed by the seat cushion and seat back of the middle seat and the seat cushion and seat back of the rear seat by tilting both the seat cushions and the seat backs toward the rear to nearly horizontal position. Devices using this device are known (for example, the
(See Publication No. 6638).

By the way, in the case where the seat back of the rear seat can be tilted rearward until it is almost horizontal as required, the seat cushion can be moved as far back as possible during normal use with the seat back upright. The space between the front end of the seat cushion and the middle seat located in front of the seat cushion is made as wide as possible to ensure space for the occupant's feet, and the seat back is tilted rearward to a substantially horizontal position. When the seat cushion is brought into a fully flat state, it is necessary to move the seat cushion forward in order to prevent the upper end of the seat bag from mutually cushioning the back door located at the rear of the vehicle body.

However, in conventional seat devices, the forward/backward operation of the seat cushion and the tilting operation of the seat bag are operated independently using separate operation members, so that the operation when raising and lowering the seat bag is difficult. This is complicated, and in some cases, the seat back may interfere with the back door and be damaged if the seat back is raised backwards without moving the seat cushion forward. Become.

(Purpose of the invention) The present invention is an attempt to solve the problems pointed out in the section of the prior art mentioned above.The present invention is an attempt to solve the problems pointed out in the section of the prior art mentioned above. The present invention has been developed for the purpose of improving the operability when raising and lowering the seat bag in a seat device for an automobile equipped with a seat bag.

(Means for Achieving the Object) As a means for achieving the above object, the present invention provides a seat cushion supported by a vehicle body side member, and a seat cushion that extends vertically relative to the rear end of the vehicle body. In a seat device for an automobile having a rear seat comprising a seat back which is pivotably mounted on a seat back such that the seat back can be raised and folded, the seat cushion is disposed between the vehicle body side member and the seat cushion of the rear seat. A support means is provided for supporting the above-mentioned member so as to be movable forward and backward between two positions in the longitudinal direction of the vehicle body, namely, a forward position located on the front side of the vehicle body and a reverse position located on the rear side of the vehicle body. an engaging and fixing means that acts to fix the seat cushion in the retracted position by appropriately engaging the support means when the seat cushion is positioned in the retracted position; When the vehicle body is tilted to the rear of the vehicle, the seat cushion is appropriately engaged with the engaging and fixing means to release the fixing action of the seat cushion by the engaging and fixing means, and the seat cushion is moved from the retracted position to the forward position. and a disengagement means that acts to enable movement of the holder.

(Function) In the present invention, by the above-mentioned means, when the seat cushion is positioned in its retracted position and the seat bag is erected, the seat is secured by the support means and the engagement fixing means that engages with the support means. The cushion is positioned in its retracted position, but when the seat back is tilted rearward from this state, if the tilt angle exceeds a predetermined tilt angle, the engagement release means is activated and the seat back is supported by the engagement fixing means. To release the locking effect on the means,
The seat cushion is automatically movable from its retracted position to its forward position, for example, by applying a force in the forward direction to the seat cushion using a spring force or a human operating force. is automatically moved to the front side of the vehicle body in conjunction with the rearward tilting operation of the seatback, thereby preventing mutual interference between the seatback and vehicle body side members such as the backdoor due to the rearward tilting of the seatback. The Rukoto.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 5.

FIG. 1 shows a portion of a rear seat 1 of a van-type vehicle equipped with a seat device according to an embodiment of the present invention. 3 is a back door provided at the rearmost part of the vehicle body, and the rear seat 1 is connected to the floor panel 2.
Moreover, it is located just in front of the back door 3 (on the front side of the vehicle body).

The rear seat 1 includes a seat cushion 10 fixed to the floor panel 2 side, and a seat back 11 pivotally connected to the rear end 10a of the seat cushion 10 via a connecting member 15, which will be described later, so as to be able to freely rise and fall in the front and rear direction. The seat bag 1
1 can be raised and lowered as appropriate by an appropriate tilting angle adjustment mechanism (not shown) mounted near the connecting member 15, and can be fixed at a predetermined tilted position. In other words, the seatback 11 is in a forward tilted position, as shown by reference numeral 11', tilted toward the front of the vehicle, centering on the normal upright position shown by the solid line in FIG. and a rearward tilted position in which the vehicle body is tilted toward the rear of the vehicle until it becomes substantially parallel to the floor panel 2 as shown by reference numeral 11.

Furthermore, in this embodiment, the rear seat 1
can be moved in the longitudinal direction of the vehicle body (in the direction of arrows A-B), and its position in the longitudinal direction can be selected using the seat back 11.
The settings are made according to the tilt angle of the camera. That is, as shown by the chain line in FIG. 1, the seat back 11 has a forward tilted position indicated by 11' and an intermediate tilted position indicated by 11'' (a position having a tilt angle intermediate between the upright position and the rearward tilted position). When the seat cushion 10 is in the middle position, the seat cushion 10 is in a retracted position toward the rear of the vehicle body as shown by the solid line in the figure (in the following explanation, the seat cushion 10 in this case is
In contrast, when the seat back 11 is beyond the intermediate tilted position and between the rearward tilted position, the seat cushion is moved as shown by the chain line (reference numeral 10') in the figure. 10 is a position in which the seat cushion 10 is advanced toward the front side of the vehicle body (in the direction of arrow A) (in the following description, the position of the seat cushion 10 in this case will be referred to as the forward position)
so that it is positioned. The intermediate tilting position of the seat bag 11 is determined from the tilt angle at which the upper end of the seat bag 11 comes into contact with the back door 3 when the seat bag 11 is tilted rearward with the seat cushion 10 positioned at its retracted position. is also set at least to the standing position side.

In FIG. 1, reference numeral 4 indicates a tire house formed on the floor panel side.

In order to automatically set the position of the seat cushion 10 in the longitudinal direction of the vehicle body corresponding to the inclination angle of the seat back 11 in conjunction with the inclination operation of the seat back 11, this embodiment uses the present invention. A pair of front and rear support means for movably supporting the seat cushion 10 in the longitudinal direction of the vehicle body with respect to the floor panel 2, namely, a front support means 5A located on the front side of the vehicle body and a front support means 5A located on the rear side of the vehicle body. and a pair of front and rear engagement fixing means for fixing the seat cushion 10 in a predetermined position near the front support means 5A and the rear support means 5B, that is, the front support means. Front side engagement fixing means 6A corresponding to 5A and rear side fixing means 6B corresponding to rear side support means 5B
and an engagement release means 7 for appropriately releasing the fixing action of the front side engagement and fixation means 6A and the rear side engagement and fixation means 6B in accordance with the inclination angle of the seat back 11. Hereinafter, the specific structure and operation of the pair of support means 5A, 5B, the pair of engagement and fixing means 6A, 6B, and the engagement release means 7 will be explained in detail with reference to FIGS. 2 to 5. .

The front support means 5A includes a seat cushion 10.
The seat cushion 10 is located at the front end of the seat cushion 10 and supports the seat cushion 10 so as to be movable in the front and back directions relative to the floor panel 2, and the seat cushion 10 can be pulled forward toward the front of the vehicle body around the front end of the seat cushion 10. As shown in FIGS. 2 to 4, front end portions of a pair of left and right side frames 12 each having a substantially U-shaped cross section are disposed on both sides of the seat cushion 10 in the vehicle width direction and are arranged toward the longitudinal direction of the vehicle body. The front end 21a can freely pivot in the longitudinal direction of the vehicle body by means of a connecting pin 20 provided on the lower surface 12a (see Fig. 3).
The front guide plate 21 is connected to the front guide plate 21.
This front side guide plate 21 is composed of a rectangular plate member having an appropriate length. This front side guide plate 21 has an upper surface 21b and a lower surface 21c formed into mutually parallel planes, and the pair of planes 21
Of b and 21c, the upper surface 21b is a contact surface for the lower surface 12a of the front end of the side frame 12 (see FIG. 2), and the lower surface 21c is slidably abutted against the floor panel 2. This is a sliding contact surface (see Figures 2 and 3). Therefore, the side frame 12 is placed at its front portion so as to be slidable in the front-rear direction relative to the floor panel 2 via the front guide plate 21.

Furthermore, this front side guide plate 21 has an elongated hole 22 of an appropriate length extending in the longitudinal direction formed in the center thereof. A horizontal portion 23a of a substantially torii-shaped front fixing pin 23 (see FIG. 4) fixed to the floor panel 2 side is slidably fitted into the elongated hole 22. Therefore, the side frame 12 is positioned within the sliding range of the front fixing pin 23 in the elongated hole 22 of the front guide plate 21 with respect to the floor panel 2 (i.e., between the retracted position shown in FIG. 2 and the retracted position shown in FIG. 3). (between the forward positions shown in FIG.

In addition, in FIGS. 2 to 4, the reference numeral 24 is
A return spring is tensioned between the rear end 21d of the front guide plate 21 and the front fixing pin 23, and the return spring 24 always keeps the front guide plate 21 connected to the front fixing pin 23.
3 toward the front of the vehicle body (in the direction of arrow A).

On the other hand, as shown in FIGS. 2, 3, and 5, the rear side support means 5B is connected to the side frame 12.
It has a rear side guide plate 26 made of a substantially rectangular plate that protrudes downward from the lower surface 12b of the rear end. The lower surface 26a of this rear guide plate 26 is a contact surface for the floor panel 2, and the rear end portion of the side frame 12 is placed on the floor panel 2 via this rear guide plate 26. That will happen. Furthermore, this rear guide plate 26 has a horizontal groove portion 2 extending in the longitudinal direction of the vehicle body.
7a and a vertical groove 27b extending downward from the rear end of the horizontal groove 27a and opening into the lower surface 26a.
Further, in the engagement groove 27 of the rear guide plate 26, a horizontal portion 28a of a substantially torii-shaped rear fixing pin 28 fixed on the floor panel 2 is engaged so as to be relatively movable. This rear fixed bin 2
The fixed position of 8 with respect to the floor panel 2 is set as follows in relation to the front side support means 5A side. That is, when the front fixing pin 23 is located at the front end of the elongated hole 22 of the front guide plate 21 as shown in FIG.
The rear fixing pin 28 is located at the front end of the horizontal portion 27a of the engagement groove 27 of the rear guide plate 26, whereas the front fixing pin 23 is located at the front end of the horizontal portion 27a of the engagement groove 27 of the rear guide plate 26.
is located at the rear end of the elongated hole 22 of the front guide plate 21, the rear fixing pin 28
is the vertical portion 27 of the engagement groove 27 of the rear guide plate 26
It is set to be located at b. Therefore, in the retracted position of the seat cushion 10 where the side frame 12 is fully retracted in the direction of arrow B,
The seat cushion 10 is vertically connected to the floor panel 2 at both front and rear ends thereof by a front support means 5A and a rear support means 5B (see FIG. 2). On the contrary,
In the forward position of the seat cushion 10, in which the side frame 12 is fully advanced in the direction of arrow A, the seat cushion 10 is supported by the front support means 5A at its front end to the floor panel 2.
Although it is connected to the side, it is not connected to the floor panel 2 at the rear end. Therefore, in this state, the rear seat 1 can be tilted toward the front of the vehicle body around the connecting pin 20 of the front support means 5A, as shown by the chain line (1') in FIG.

In this way, in order to fix the seat cushion 10, which is movable in the longitudinal direction of the vehicle body by the front side support means 5A and the rear side support means 5B, in its retreated position, the front side engagement fixing means described later is used. 6A
and rear side fixing means 6B.

The front side engaging and fixing means 6A is shown in FIGS. 2 to 4.
As shown in the figure, a pair of left and right side frames 1
It has a swing lever 31 which is fixed to a support shaft 30 disposed astride between 2 and 12 and is rotatable integrally with the support shaft 30. This swing lever 3
1 has one end 31a attached to the front fixing pin 23.
A locking portion 33 that can be locked to the horizontal portion 23a from the rear side of the vehicle body, and a long hole 32 in the other end 31b into which a front end 57a of a front link bar 57, which will be described later, can be slidably inserted. It is said that Further, this swing lever 31 is always urged in the direction of arrow D by a return spring (not shown).
The locking portion 33 is rotated in the direction of arrow C-D by the spring force of this spring and a rotational force opposing this spring force. Further, the locking portion 33 of the swing lever 31 is provided with an engagement protrusion 34 having an appropriate length so as to protrude toward the rear side of the vehicle body.

Front side engagement fixing means 6A configured in this way
According to the invention, as shown in FIG.
is positioned at its forward position, and a front side link bar 5, which will be described later, is connected to the swing lever 31.
When the operating force 7 is not applied, the swing lever 31 is moved in the direction of arrow D by the spring force of the spring (not shown) attached to the swing lever 31.
(In the following description, the lever position of the swing lever 31 at this time will be referred to as the lower position), and the locking portion 33 and the front fixing pin 23 engage with each other. the side frame 1
2, its forward movement will be restricted.

On the other hand, when the operating force of the front link bar 57, which will be described later, is applied to the swing lever 31 from this state, the swing lever 31 is forcibly rotated in the direction of arrow C in response to the operating force. As shown in FIG. 3, the locking portion 33 is positioned at a position where the engagement with the front fixing pin 23 is released (in the following explanation, the lever position of the swing lever 31 at this time is referred to as the upper position). (referred to as dynamic position).

In addition, when the swing lever 31 is positioned at the downward movement position as shown in FIG. When the swing lever 31 is rotated, it comes into contact with the upper surface of the front fixing pin 23, and acts to restrict further rotation of the swing lever 31 in the direction of arrow D. That is, the engaging protrusion 34 functions to always position the swing lever 31 on the rear side of the vehicle body of the front side fixing pin 23.

As shown in FIGS. 2, 3, and 5, the rear side fixing means 6B is a rotary member that is rotatably attached to the support shaft 36 fixed to the side frame 12 in the direction of arrow E-F. It has a moving lever 37. The rotating lever 37 has a pair of lever portions that are mutually inclined at an appropriate intersection angle, that is, a first lever portion 38 and a second lever portion 39, and a return spring (not shown). is constantly urged to rotate in the direction of arrow F. Further, the second lever portion 39 has a fitting groove 40 formed on its lower surface side, which opens downward and allows the rear side fixing pin 28 to engage therein, and has a fitting groove 40 formed at its tip 7 as appropriate. A long engagement protrusion 41 is provided in a protruding manner.

The mounting position of the rotary lever 37 with respect to the side frame 12 is such that the rear side fixing pin 28 is engaged in the fitting groove 40 when the side frame 12 is positioned in the retracted position as shown in FIG. It is appropriately set based on the relative relationship with the rear side fixing pin 28 so as to obtain the desired height.

Moreover, this rotating lever 37 is similar to the rotating lever 3 described above.
It is forcibly rotated in the direction of the arrow E by the operating force of a rear link bar 58, which will be described later and is engaged with the rear link bar 58. The state shown in Figure 3.Hereinafter,
At this lever position of the rotary lever 37 (referred to as the upward movement position), the engagement between the fitting groove 40 of the second lever portion 39 and the rear fixing pin 28 is released, and on the other hand, The state in which the operating force of the rear link bar 58 is released and the spring force of the return spring causes it to rotate in the direction of arrow F (this is the state shown by the solid line in FIG. 2, and in the following explanation, this state will be described) In the lever position of the rotary lever 37 (referred to as the lower position), the fitting groove 40 of the second lever portion 39 and the rear fixing pin 28 are engaged with each other.

According to the rear side fixing means 6B configured in this way, when the rotary lever 37 is positioned at the lower position as shown in FIG. is engaged with the side frame 12 (i.e., the seat cushion 1
0)) is fixed in its retracted position, whereas when the rotary lever 37 is positioned at the upward position as shown in FIG.
7 and the rear side support means 5B are engaged, and the fixation of the side frame 12 is released.

As described above, the front side engaging and fixing means 6A and the rear side fixing means 6B are moved so that the swing lever 31 moves in the direction of arrow C and the rotating lever 37 moves in the direction of arrow E by external force.
The side frames 12 of the seat cushion 10 are forcibly rotated in the respective directions.
An engagement release means 7, which will be described later, is used to release the front engagement and fixation means 6A and the rear engagement and fixation means 6B.

The disengagement means 7 moves the swing lever 31 of the front engagement and fixing means 6A and the rotating lever 37 of the rear fixation means 6B in the direction of arrow C or the direction of arrow E, respectively, depending on the inclination angle of the seat back 11. The fixing action of the seat cushion 10 by the front side engaging and fixing means 6A and the rear side fixing means 6B is released by applying a rotational force to the seat cushion 10, as shown in FIGS. An operator 4 protruding from one side of the connecting member 15 that connects the cushion 10 and the seat bag 11.
It has 4. A long hole 45 is formed in this operator 44, and a link bar 56, which will be described later, is provided between the long hole 45 and the long hole 32 of the swing lever 31.

The link bar 56 includes a front link bar 57 whose one end 57a is inserted into the elongated hole 32 of the swing lever 31, and whose other end 57b is slidably inserted into the guide tube 59. A rear link bar having one end 58a inserted into the elongated hole 45 of the operator 44, and the other end 58b inserted into the guide tube 59 facing the other end 57b of the front link bar 57. 58. Further, the rear link bar 58 has a protrusion 55 protruding near its one end 58a.
This protrusion 55 is capable of engaging with the first lever portion 38 of the rotary lever 37 of the rear side fixing means 6B in the advancing and retracting direction of the rear side link bar 58.

The length dimensions of the front link bar 57 and the rear link bar 58 are such that the seat cushion 10 is positioned at the retreated position and the swing lever 31 of the front engagement and fixing means 6A is fixed to the rear side as shown in FIG. In a state in which both the rotating levers 37 of the means 6B are positioned at the lower movement position, the other end 57b of the front retract bar 57 and the rear link bar 58
The other end 58b is appropriately set so that the protrusion 55 and the rotating lever 37 can face each other with the same spacing S as the spacing S. still,
The distance S between the first lever portion 38 of the rotary lever 37 and the protrusion 55 is determined by the distance S between the first lever portion 38 of the rotary lever 37 and the protrusion 55. The dimension is set to be the same as the amount of movement in the longitudinal direction of the rear link bar 58 when the rear link bar 58 is rotated up to 15''. Therefore, the seat cushion 10 is in the state shown by the solid line in FIG. In the state in which the seat bag 11 is positioned at and the rotation lever 37 are each biased to the lower position by the spring force of a return spring (not shown) (the rear seat 1 is fixed in the backward position).
However, when the seat bag 11 tilts backward and reaches the intermediate tilted position, the other end 57b of the front link bar 57, the other end 58b of the rear link bar 58, and the first lever portion 38 of the rotating lever 37 Button 55
are in contact with each other, and the swing lever 31 and the rotation lever 37 are respectively linked via the link bar 56 so as to be interlocked. Therefore, when the seat back 11 tilts further rearward from the intermediate tilted position, the front link bar 57 and the rear link bar 58 are both moved in the direction of arrow A by the connecting member 15, and the swing lever 3
1 and the rotation lever 37 respectively rotate in the direction of arrow C or the direction of arrow E, and the seat cushion 10
The fixing effect on each will be released. Therefore, in this state, the seat cushion 10 is movable in the forward direction of the vehicle body, and is automatically moved from the backward position to the forward position by the spring force of the return spring 24 provided on the front side support means 5A side. As a result, the seat bag 11 does not interfere with the back door 3 even if it is tilted to the rear tilted position as shown by the reference numeral 11 in FIG. 1 (see FIG. 3).

As described above, according to the seat device of this embodiment, when the seat back 11 of the rear seat 1 is tilted rearward from its upright position to the rearward tilted position, the entire rear seat 1 is automatically tilted in conjunction with the tilting operation of the seat back 11. moves toward the front side of the vehicle body, and mutual interference between the seat back 11 and the back door 3 is prevented, which makes the operation easier and improves the operability accordingly.

(Effects of the invention) The present invention provides a rear seat comprising a seat cushion supported by a vehicle body side member and a seat back pivotably mounted to the rear end of the vehicle body of the seat cushion so as to be able to rise and fall freely in the vertical direction. In the seat device for an automobile, the seat cushion is arranged between the vehicle body side member and the seat cushion of the rear seat, and the seat cushion is positioned between the vehicle body side member and the seat cushion of the rear seat. A support means is provided for supporting the seat cushion so as to be movable forward and backward between two positions, front and rear of a rearward position and a rearward position of the vehicle body. an engaging fixing means that acts to fix the seat cushion in the retracted position by appropriately engaging the seat back; an engagement release means that acts to appropriately engage with the means to release the fixing action of the seat cushion by the engagement and fixing means and enable the seat cushion to move from the retracted position to the forward position; It is characterized by having the following.

Therefore, according to the present invention, when the seat cushion is positioned at its retracted position and the seat bag is erected, the seat cushion is moved by the supporting means and the engagement fixing means that engages with the supporting means. However, when the seat back is tilted rearward from this state, when the tilt angle exceeds a predetermined tilt angle, the engagement release means is activated and the engagement and fixing means fix the seat back to the support means. Because the effect is removed,
The seat cushion is automatically movable from its retracted position to its forward position, for example, by applying a force in the forward direction to the seat cushion using a spring force or a human operating force. is automatically moved toward the front of the vehicle body in conjunction with the rearward tilting operation of the seatback, and as a result, when the seatback is tilted backwards like in conventional seat devices, the seatback tilting operation and the seat Compared to the case where the movement of the cushion and the operation of moving the cushion must be carried out simultaneously with a separate operation, the practical effect of making the operation when tilting the seat bag backward is easier and the operability is improved can be obtained.

[Brief explanation of drawings]

1 is an overall side view of a seat device according to an embodiment of the present invention, FIG. 2 is an internal configuration diagram of the seat device shown in FIG. 1, FIG. 3 is a state change diagram of FIG. 2, and FIG.
The figure is a vertical sectional view taken from FIG. 2, and FIG. 5 is a vertical sectional view taken from FIG. 2. 1...Rear seat, 2...Floor panel, 3...
...Back door, 4...Tire house, 5A, 5B
...Supporting means, 6A, 6B...Engagement fixing means, 7
... Disengagement release means, 10 ... Seat cushion,
11... Seat back, 12... Side frame, 15... Connecting member, 20... Connecting pin, 21
...Front side guide plate, 23...Front side fixing pin,
24... Return spring, 26... Rear side guide plate, 28... Rear side fixing pin, 31... Swing lever, 37... Rotating lever, 56... Link bar.

Claims (1)

[Scope of utility model registration request] a seat cushion supported by the vehicle body side member;
A seat device for an automobile including a rear seat comprising a seat bag pivotably mounted to a rear end of the vehicle body of the seat cushion so as to be vertically tiltable, the seat cushion comprising the vehicle body side member and the seat cushion of the rear seat. The seat cushion can be freely moved back and forth between two positions in the longitudinal direction of the vehicle, a forward position located at the front of the vehicle, and a reverse position located at the rear of the vehicle. A supporting means for supporting is provided, and the seat cushion is appropriately engaged with the supporting means in a state where the seat cushion is positioned in the retracted position, and the seat cushion is fixed in the retracted position, at a position near the support means. When the seat bag is tilted toward the rear of the vehicle body beyond a predetermined tilt angle, the engagement and fixation means engages with the engagement and fixation means as appropriate, and the engagement and fixation means locks the seat cushion. 1. A seat device for a motor vehicle, comprising a disengagement means that acts to release the fixing action and enable the seat cushion to move from the retracted position to the forward position.