JPH0427702Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a seat device for an automobile, and particularly to a support structure for a seat back thereof.

(Prior art and its problems) As disclosed in Japanese Utility Model Application Publication No. 60-157335, etc., a seat back support structure for an automobile seat includes a reclining device in which the lower end of the seat back is pivoted to the vehicle body and the upper end is swingable. Some devices are designed to be attached and held in any tilted position, or to be able to be moved forward.

However, with the conventional structure described above, when the seat back is folded forward, it is necessary to configure the seat back so that the rotation locus on the upper end side does not interfere with other vehicle interior equipment members, such as the change lever or the installation panel. This has the problem that the seat height is limited, making it uncomfortable to sit on.

(Purpose of the invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a seat device for an automobile that can support a seat bag so that it can be folded forward without restricting the seat height.

For this reason, the automobile seat device according to the present invention is
The vehicle includes a floor seat and a seat back, the rear end of the floor seat being rotatably supported upwardly by the vehicle body via a connecting member, and the seat back being supported by the vehicle body by a link member such that it can be folded forward. In the vehicle, a guide member that extends in the longitudinal direction of the vehicle body and whose rear end is swingably supported by the vehicle body is installed at the lower end of the seat bag, and a sliding connecting member that is slidably connected to the guide member is attached to the seat bag. and a floor seat, one end of the link member is pivoted above the mounting position of the sliding communication member of the seat bag, and when the seat bag is folded forward, the lower end side thereof moves rearward along the guide member. In addition, when the floor sheet is rotated upward, the guide member is configured to rotate upward via the sliding connection member. Therefore, by adjusting the amount of backward movement of the lower end of the seat back, the seat height can be freely set.

(Embodiment of the invention) The seat device shown in FIG.
The floor sheet 3 is supported by a floor sheet 3.

The seat bag 2 has a guide pin attached to the rear side of the seat bag 2 via a bracket 21 in a slot 12a formed at the tip side of a link bar 12 whose rear end is pivotally connected to a bracket 11 vertically disposed on the vehicle body 1. 22 is fitted in a relatively slidable manner, and a guide is attached to the lower end side of the side surface of the seat bag 2 in a slot 13a formed over the entire length of the guide rail 13 whose rear end side is also pivotally connected to the bracket 11. An L-shaped swinging hook 15 is pivotally connected above the vehicle body 1 via a bracket 14 to a hook locking portion 24 formed on the upper rear surface of the pin 23. It is designed to be held in the upright position by locking it.

In addition, the floor sheet 3 has a connecting plate 31 attached to the rear thereof pivoted to a connecting plate 16 fixed to the vehicle body 1, and a connecting pin 33 attached to a bracket 32 vertically extending from the rear end side of the floor sheet 3. is fitted into the slot 13a of the guide rail 13 so as to be relatively slidable.

As shown in the second figure, the link 12 and the guide rail 13 are arranged with the bracket 11 interposed therebetween at a predetermined interval. The connecting pin 33 on the floor seat 3 side is formed into a hollow cylindrical shape with an inner diameter into which the guide pin 23 on the seat bag 2 side having flanges 33a and 33b at both ends can be inserted, and a semicircular shape is formed in the guide rail fitting area. A shaped notch 33c is provided through which the guide pin 23 can go in and out.

In the seat device configured in this way, when the hook 15 engaged with the back surface of the seat bag 2 is released and the seat bag 2 is folded forward, the bracket 1 is moved by the link 12.
Since the maximum distance between the seat bag 1 and the guide pin 22 of the seat bag 2 is specified, the guide pin 23 attached to the lower end of the seat bag 2 can slide and rotate within the slot 13a of the guide rail 13, as shown in FIG. As a result, the lower end side of the seat bag 2 moves rearward. Note that at this time, the connecting pin 33 of the floor sheet 3 does not move from its original position, and the connecting pin 33 of the floor sheet 3 does not move from its original position, but
is held in place. Further, a change in the distance between the guide pin 22 of the seat bag 2 and the bracket 11 is absorbed by the relative sliding of the guide pin 22 within the slot 12a formed in the link 12.

Therefore, the rotation trajectory of the upper end side of the seat back 2 when folded forward can be moved rearward, and interference with vehicle interior equipment members such as the change lever 4 can be avoided.

Note that when the front end side of the floor sheet 3 is pushed upward from the upright state shown in the first figure, the connecting pin 33 slides rearward within the slot 13a of the guide rail 13, as shown in the fifth figure. Then, the guide rail 13 slides upward around the pivot point of the flange 11. Along with this sliding, the guide pin 23 also slides within the slot 13a of the guide rail 13, and the seat back 2 is pushed upward.

FIG. 6 shows another embodiment of the seat device according to the present invention, in which the link member connecting the seat back 2 and the flange 11 is composed of a pair of links 122 and 123 connected by a relay pin 121, and the seat back 2 A spring 170 is further strung between the side link pivot bracket 21 and the bracket 11. It should be noted that other constituent members are the same as those in the first illustrated embodiment except for the omission of the Fulcrum 15. Further, as shown in FIG. 7, the link 121,
122, spring 170, and guide rail 13 are installed in such a way that they do not interfere with each other.

In this configuration, the spring 17
0 rotates and biases the seat back 2 in the clockwise direction in the sixth figure to hold it in an upright state,
When folding the seat bag 2 forward, when the seat bag 2 is rotated to a predetermined level, the biasing force of the spring 170 acts counterclockwise, and the spring force allows the seat bag 2 to be rotated forward to the position shown in the eighth figure. Become. In the case of this embodiment, due to the relative rotation between the links 122 and 123,
Guide pin 22 of seat back 2 and bracket 1
1, but the maximum distance between the two is restricted by the links 122 and 123, as in the first illustrated embodiment.

(Effect of the invention) As described above, according to the automobile seat device according to the invention, the tip rotation locus of the seat bag, which is supported by the vehicle body so as to be able to be folded forward, is shifted backward, and other parts of the vehicle interior, such as the change lever, are Since interference with equipment members can be prevented, the seat height can be set freely.

[Brief explanation of the drawing]

Fig. 1 is a side configuration diagram showing an embodiment of an automobile seat device according to the present invention, Fig. 2 is a plan configuration diagram of the main parts thereof, Fig. 3 is a perspective view of the connecting pin, and the sliding diagram is the seat back tilted forward. FIG. 5 is a side configuration diagram when the floor seat is raised; FIG. 6 is a side configuration diagram showing another embodiment of the seat device according to the present invention; FIG. 7 is a plan configuration diagram of the main parts thereof. , FIG. 8 is a side view of the configuration when the seatback is folded forward. 1... Vehicle body, 2... Seat bag, 12, 12
2,123... Link member, 13... Guide member,
23...Connecting member.

Claims (1)

[Claims for Utility Model Registration] A vehicle comprising a floor seat and a seat back, the rear end of which is rotatably supported by the vehicle body via a connecting member, and the seat back is folded forward by a link member. In a seat bag that can be supported by the vehicle body, a guide member that extends in the longitudinal direction of the vehicle body and whose rear end is swingably supported by the vehicle body is installed at the lower end of the seat bag, and is slidably connected to the guide member. attaching a sliding connecting member to the seat bag and the floor seat, and pivoting one end of the link member above the mounting position of the sliding connecting member on the seat bag, so that when the seat bag is folded forward, the lower end side thereof is attached to the seat bag and the floor seat. What is claimed is: 1. A seat device for an automobile, characterized in that the seat device moves rearward along a guide member, and is configured such that when the floor seat rotates upward, the guide member rotates upward via the sliding connection member.