JP3781257B2 - Folding seat device for vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foldable seat device for a vehicle, comprising a foldable seat comprising a seat cushion and a seat back, that is, a seat body, and a lock release mechanism for releasing the locked state of the seat body to the floor surface at the back of the seat cushion. About.
[0002]
[Prior art]
In a vehicle equipped with three or more rows of seats such as a wagon car, the rear seat can be folded and moved back and forth and stored in the floor. Such a foldable seat is fixed to the floor surface by a lock mechanism, that is, a floor lock during normal use, and when folded and stored, the lock release mechanism provided on the back of the seat cushion is operated to lock the floor lock. Is to be canceled.
[0003]
4 to 5 show an example of such a folding seat, FIG. 4 is a rear perspective view of the seat, and FIG. 5 is a sectional view taken along line BB of FIG. In the figure, 100 is a seat, 1 is a seat cushion of the seat, 2 is a seat back, and the seat back 2 can be folded forward of the vehicle with respect to the seat cushion 1. Reference numeral 3 denotes a floor lock mechanism for fixing the seat 100 to the floor surface when the normal seat 100 is used.
[0004]
Reference numeral 4 denotes a lock release mechanism, which is provided in a recess 9 formed on the back surface of the seat cushion 1. In FIG. 5 showing the details of the unlocking mechanism 4, 6 is a support pin attached to the seat cushion 1, 5 is a release lever rotatably supported by the support pin 6, and 8 is one end of the release lever 5. The cable is connected to the cable. The other end of the cable 8 is connected to the floor lock mechanism 3. Reference numeral 7 denotes a torsion spring interposed between the support pin 6 and the release lever 5 and is biased in a direction to return the cable 8.
[0005]
In such an apparatus, when the normal seat 100 is used, the seat 100 is fixed to the floor surface by the floor lock mechanism 3. When the seat 100 is moved backward and stored in the floor, the release lever 5 is rotated as indicated by the arrow S in FIG. 5 to pull the cable 8 and release the floor lock mechanism 3.
[0006]
On the other hand, in the technique disclosed in Japanese Patent Application Laid-Open No. 10-217819, in a folding seat device for a vehicle having a foldable seat composed of a seat cushion and a seat back, a seat back protection member is provided on the rear end surface of the seat cushion and Is received by the seat back protection member, and the seat back is prevented from being damaged by luggage.
Moreover, in this prior art, the lock release mechanism which cancels | releases a floor lock is provided inside the said seat back protection member of the seat cushion rear end surface.
[0007]
[Problems to be solved by the invention]
However, this conventional technique has the following problems. That is, the foldable seat as described above is fixed to the floor surface by a lock mechanism, that is, a floor lock during normal use, and is unlocked provided on the back (rear end surface) of the seat cushion when folded and stored. The floor lock is released by operating the mechanism.
That is, the floor lock releasing operation of the seat is performed only when the passenger is not folded on the seat and the seat is folded and stored.
[0008]
However, in the folding seat device for a vehicle shown in FIGS. 4 to 5, the concave portion 9 in which the unlocking mechanism 4 is accommodated is opened rearward, so that it may be mistaken during normal use on which the occupant is hung. Then, the release lever 5 is operated, whereby the floor lock is released and the seat may move.
The prior art disclosed in Japanese Patent Laid-Open No. 10-217819 also has the same problem as described above because the lock release mechanism for releasing the floor lock is exposed on the rear end surface of the seat cushion.
[0009]
In view of the problems of the conventional technology, the present invention has a very simple structure, prevents an accidental operation of the unlocking mechanism for unlocking the floor lock during normal use while sitting on the occupant, and enhances the appearance of the lever portion. An object of the present invention is to provide a folding sheet device that improves the above.
[0010]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a seat body that can be folded, comprising a seat cushion and a seat back, and a floor surface of the seat body that is provided at the rear end of the seat cushion. In the folding seat device of the vehicle provided with a lock release mechanism that releases the locked state to
One end is fixed to the back of the seat back and the other end is fixed to the seat cushion via an elastic member to cover the lock release mechanism in a normal seating state where the seat cushion and the seat back are not folded A vehicle folding seat device comprising: a cover member, wherein the cover member is configured to move upward when the seat back is folded forward of the vehicle so that the lock release mechanism can be operated. suggest.
[0011]
According to this invention, the seat cushion and the seat back are not folded during normal use when the passenger is seated on the seat, and the seat back is standing up. The upper end fixing portion of the lock release mechanism is located below, so that the cover member is pulled down to a position where the opening of the storage portion of the lock release mechanism is closed by the tensile force of the expansion / contraction member, and the cover member releases the lock release mechanism. The storage part is closed.
[0012]
Accordingly, during normal use while the passenger is seated, the storage part of the unlocking mechanism is always covered by the cover member, and the unlocking mechanism cannot be operated from the outside, and the unlocking mechanism malfunctions. There is no occurrence. Thereby, it is possible to prevent the floor lock from being released and the seat from moving due to such a malfunction.
[0013]
Further, when the seat is moved backward and stored in the floor surface, if the seat back is tilted forward, the upper end fixing portion of the cover member provided on the back portion of the seat back is moved upward as the seat back is tilted forward. For this reason, the cover member pulls and expands the elastic member, and the opening provided in the cover member opens the storage portion of the lock release mechanism to the outside.
Accordingly, the release lever of the lock release mechanism can be operated from the outside, and the release lever can be rotated to pull the floor lock release cable, release the floor lock, and move the seat.
[0014]
Therefore, according to this invention, it is extremely simple to add the cover member that automatically covers or opens the unlocking mechanism by the standing and folding of the seat back, and the elastic member that has a function of pulling back the cover member. With such a structure, it is possible to avoid the malfunction of the unlocking mechanism, and it is possible to prevent the accident that the floor lock is released and the seat moves due to the malfunction and the passenger is damaged.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
[0016]
1A and 1B are perspective views of a folding seat device for a vehicle according to an embodiment of the present invention, in which FIG. 1A shows a seat back standing up and FIG. 1B shows a folding time. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a side view of the floor lock mechanism. It is a perspective view which shows the 3rd Example of the said foaming base material.
[0017]
In FIG. 1, reference numeral 100 denotes a seat, 1 denotes a seat cushion of the seat 100, and 2 denotes a seat back. The seat back 2 can be folded forward of the vehicle with respect to the seat cushion 1. Reference numeral 3 denotes a floor lock mechanism which fixes the seat 100 to the floor surface when the normal seat 100 is used, and details will be described later.
Reference numeral 4 denotes a lock release mechanism, which is provided in a recess 9 formed in the rear end surface 14 of the seat cushion 1.
[0018]
In FIG. 2, 6 is a support pin attached to the seat cushion 1, 5 is a release lever rotatably supported by the support pin 6, and 8 is a cable connected to one end of the release lever 5. The other end of the cable 8 is connected to the floor lock mechanism 3. Reference numeral 7 denotes a torsion spring interposed between the support pin 6 and the release lever 5 and is biased in a direction to return the cable 8.
The above configuration is the same as that of the prior art.
[0019]
In the present invention, in the folding seat device of the vehicle, the vicinity of the lock release mechanism 4 mounting portion is improved as follows.
1 and 2, reference numeral 11 denotes a cover made of a flexible thin plate material such as cloth, vinyl sheet, rubber sheet, and the like, and an upper end portion is attached to a lower portion of the back surface 19 of the seat back 2 by a plurality of mounting screws 17. It is fixed (may be glued or sewn). Reference numeral 15 denotes an opening formed in the lower portion of the cover 11, and when the seat back 2 shown in FIGS. 1 (A) and 2 is erected (during normal use while being seated on the passenger), The upper edge 16 of the opening is positioned below the recess 9 of the seat cushion 1 so that the cover 11 closes the recess 9, and when the seat back 2 is folded, the bottom surface of the seat back 2 The dimension of the opening 15 is set so that the opening 15 completely releases the recess 9 by rotating upwardly.
[0020]
A tension spring 12 is provided in an attachment space 31 formed at the bottom of the seat cushion 1 and is interposed between the lower end of the cover 11 and the attachment portion 32 of the seat cushion 1. When the seat back 2 shown in FIG. 1 (A) stands, the spring 12 pulls the cover 11 with an appropriate tension (minimum tension) as shown in FIGS. 1 (A) and 2. So that the recess 9 is completely closed, and when the seat back 2 shown in FIG. 1 (B) is folded, it is not broken when the seat back 2 is fully extended due to the upward rotation of the bottom surface 13. Is set to the main spring point.
[0021]
In FIG. 3 showing the details of the floor lock mechanism 3, 22 is a striker fixed on the floor 27, 24 is a bracket fixed to the lower part of the seat cushion 1, and 23 is a pin supported at both ends by the bracket 24. , 21 is a latch whose central portion is rotatably supported by the pin 23. A cable 8 from the release lever 5 is connected to the upper end of the latch 21. A spring 25 is interposed between the lower end of the latch 21 and the floor 27 and is urged so as to press the cam surface 26 of the latch 21 against the striker 22.
[0022]
In the folding seat device for a vehicle having such a configuration, the seat cushion 1 and the seat back 2 are folded as shown in FIGS. 1 (A) and 2 during normal use when the passenger is seated on the seat 100. Since the seat back 2 is not standing, the upper end portion of the cover 11 fixed to the back surface 19 of the seat back 2 is downward, that is, the bottom surface 13 of the seat back 2 is in contact with the upper surface of the seat cushion 1. Therefore, the cover 11 is pulled down to the position where the recess 9 in which the unlocking mechanism 4 is accommodated is closed by the tensile force of the spring 12. Thereby, the recess 9 is completely closed by the cover 11.
[0023]
Therefore, during normal use while the occupant is seated on the seat 100, the recess 9 that houses the unlocking mechanism 4 is always covered by the cover 11, and the unlocking mechanism 4 can be operated from the outside. However, the floor lock mechanism 3 is in a floor lock state in which the cam surface 26 of the latch 21 is pressed against the striker 22 by the tension of the spring 25 as indicated by the solid line in FIG. Therefore, the malfunction of the lock release mechanism 4 does not occur, and the floor lock mechanism 3 is released by the malfunction and the seat 100 does not move.
[0024]
When the seat 100 is moved backward and stored in the floor, as shown in FIG. 1 (B), when the seat back 2 is tilted forward, the seat back 2 is tilted forward, The upper end portion of the cover 11 fixed to the lower portion of the back surface 19 moves upward. For this reason, the cover 11 pulls the spring 12 and extends it, and the opening 15 provided in the cover 11 opens the concave portion 9 that is the storage portion of the lock release mechanism 4 to the outside.
[0025]
As a result, the release lever 5 of the lock release mechanism 4 can be operated from the outside, and the release lever 5 is rotated to pull the cable 8, and the latch 21 is released from the striker 22 as shown by a two-dot chain line in FIG. Thus, the floor lock is released and the seat 100 can move rearward.
[0026]
【The invention's effect】
As described above, according to the present invention, a cover member that covers the unlocking mechanism is provided in a normal seating state in which the seat cushion and the seat back are not folded, and the cover member moves the seat back to the front of the vehicle. Since it is a folding seat device for a vehicle that is configured to move upward when folded and is capable of operating the unlocking mechanism, the unlocking mechanism is automatically covered or released by raising and folding the seat back. With a very simple structure in which a cover member and an expansion / contraction member having a pull back function for the cover member are added, the malfunction of the unlocking mechanism can be avoided, and the floor lock is released by such malfunction and the seat is released. It is possible to provide a vehicle folding seat device that can prevent the movement of the vehicle and improve the appearance of the lever portion.
[Brief description of the drawings]
FIGS. 1A and 1B are perspective views of a folding seat device for a vehicle according to an embodiment of the present invention, in which FIG. 1A shows a seat back standing up and FIG.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a side view of the floor lock mechanism.
FIG. 4 is a rear perspective view of a folding sheet device according to the prior art.
5 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Seat back 3 Floor lock mechanism 4 Lock release mechanism 5 Release lever 6 Support pin 7 Torsion spring 8 Cable 9 Recess 11 Cover 12 Spring 13 Seat back bottom face 14 Seat cushion rear end face 15 Opening 19 Seat back back face 21 Latch 22 Striker 100 seats

Claims (1)

A folding seat for a vehicle, comprising: a seat body comprising a seat cushion and a seat back; and a foldable seat body, and a lock release mechanism provided at a rear end portion of the seat cushion to release the locked state of the seat body to the floor surface. In the device
One end is fixed to the back portion of the seat back and the other end is fixed to the seat cushion via an elastic member to cover the lock release mechanism in a normal seating state where the seat cushion and the seat back are not folded. A folding seat device for a vehicle, comprising a cover member, wherein the cover member is configured to be moved upward when the seat back is folded forward of the vehicle so that the lock release mechanism can be operated.

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