JPH0141609Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a foldable seat that can be moved to a reclining state with a single touch operation.

(Prior art) As shown in Fig. 4, in the conventional folding seat, the seat cushion A is pivoted forward by a pivot part a, and the seat back B is pivoted forward by a pivot part b. It is pivoted so that it can be laid down,
Both sheet members A and B are configured to be movable independently of each other.

Therefore, in order to change the seat to a reclined state, first flip up the seat cushion A forward,
Next, two operations are required: folding the seat bag B forward.

(Purpose) In view of these points, the present invention has been developed so that when the seat cushion is raised, the seat bag follows this and falls forward, and when the seat cushion is returned to its original position, the seat cushion simultaneously returns to its original position. The purpose is to provide a folding seat with excellent operability, and its features include a seat cushion that is pivoted so that it can stand up in the front, and a seat cushion that is pivoted so that it can be folded down in the front. In a foldable seat comprising a seat cushion, one end of a link member is pivotally supported on a side surface of the seat cushion,
A pivot pin is provided at the other end of the link member, the pivot pin is slidably pivoted in a guide groove formed along the vertical direction on the side surface of the seat bag, and is provided at the other end of the link member. A hook member is pivotally supported on the pivot pin, the hook member is biased by a spring in a direction to be latched to a striker fixed to the floor, and a protrusion is formed on the other end of the link member,
When the seat cushion is in an upright state, the pivot pin at the other end of the link member moves upward from below the guide groove, and the protrusion at the other end of the link member moves the hook member against the bias of the spring. The present invention is characterized in that the hook member is detached from the striker by rotating the seat bag, and the pivot pin is capable of pulling the seat bag forward and holding it in a laid-down state.

(Example) The present invention will be explained in detail below based on the illustrated example.

FIGS. 1 to 3 show an embodiment of the present invention, and reference numeral 1 in the figures indicates a seat cushion that is pivotably supported in the front by a rotating hinge 1a provided at the front lower part, One end of the link 3 is pivotally supported on its side by a pivot pin 3a. 4 is a seat bag that is paired with the seat cushion 1;
The lower part is similarly pivoted by a rotating hinge 4a so that it can be folded forward, and a guide groove 5 is provided on the side surface of the lower part extending in the vertical direction from approximately the center to the lower part. A pivot pin 3b at the other end of the link 3 is slidably supported. A hook member 9 is pivotally supported on the pivot pin 3b at the other end of the link 3, and is engaged with a striker 8 protruding from the floor 7 at the rear of the seat back when the seat is in a seatable state. , this hook member 9 is always urged in the locking direction (counterclockwise in the figure) by a return spring 10. Further, a protrusion 3c is integrally formed on the other end of the link 3 toward the inner circumferential edge of the hook member 9, and this protrusion 3c moves the hook member 9 as the link 3 moves under the operating condition described below.
The locking state of the hook member 9 is released by pressing the inner peripheral edge 9a of the hook member 9, and after release, the locking member similarly contacts the inner peripheral edge 9a of the hook member 9 to stop the rotation of the hook member 9. Note that instead of pressing the inner peripheral edge 9a of the hook member 9, a locking projection is formed on one side of the hook member 9, and the projection 3c of the link member 3 is locked to this locking projection. 9
It is also possible to release the locked state.

Reference numerals 11 and 12 in the figure are operating straps attached to the seat cushion 1 and the seat bag 4, respectively.

In the state shown in FIG. 1, the hook member 9 of the seat is engaged with the striker 8, and the seat is maintained in a seatable state. When the user pulls the strap 11 of the seat cushion 1 forward and lifts the seat cushion 1 from this state, the seat cushion 1 rotates around the rotation hinge 1a, and the pivot pin 3a of the link 3 moves upward, the tip protrusion 3c of the link 3 connects to the pivot pin 3b.
The protrusion 3c rotates the hook member 9 against the bias of the return spring 10, releasing the hook member 9 from the locked state, so that the seat bag 4 can be folded down. Therefore,
After that, if you pull the strap 11 further forward, the pivot pin 3b at the tip of the link 3 will move from the bottom to the top within the guide groove 5 of the seat bag 4, pulling the entire seat bag 4 forward, and the third It will be in the lodging state shown in the figure.

Conversely, in order to return to the seatable state, pull the strap 12 on the back of the seat back in the state shown in FIG. The cushion 1 also follows this and returns to its original position in the same way.

At this time, the outer peripheral edge 9b of the hook member 9 provided at the end of the link slides around the outer periphery of the striker 8 and is locked thereto in a manner that embraces the striker 8, thereby maintaining the locked state of each sheet member 1, 4. It is to be ensured.

(Effects of the invention) As described above, according to the invention, the seat cushion and the seat back are connected by link members, and the movement of the links in accordance with the displacement of each seat member provides pivot support at the tip of the link. Since the hook member is connected to and disengaged from the striker fixed to the floor, the seat bag can be lowered via the link by raising the seat cushion, and by restoring the seat bag. Similarly, the seat back can be returned to its original position, and the locking operation when the seat is in the seated state and the unlocking operation when the seat is in the reclined state can also be performed automatically. The pivot pin moves from below to above through a guide groove formed along the vertical direction on the side surface of the seat bag, and in the locked state, the pivot pin at the other end of the link member is located at the bottom of the guide groove, and the seat back The link member does not protrude upward from the seating surface of the seat cushion in the seated state, and the presence of the guide groove allows the link member to be shortened, providing superior operability and appearance compared to conventional ones. Further, since the link member does not protrude upward, it is possible to obtain a foldable seat with excellent safety.

[Brief explanation of the drawing]

Figures 1 to 3 show a foldable seat according to an embodiment of the present invention. Figure 1 is a side view of the foldable seat in a seatable state, and Figures 2A to 3C show the locking mechanism of the seat. An explanatory diagram showing the operating state,
FIG. 3 is a side view showing the seat in a reclined state;
FIG. 4 is a side view of a conventional seat. In the figure, 1 is the seat cushion, 3 is the link,
3a and 3b are pivot pins, 3c is a link tip projection, 4 is a seat back, 5 is a guide groove portion, 8 is a striker, 9 is a hook portion, 10 is a return spring, and 11 and 12 are straps.

Claims (1)

[Scope of utility model registration request] In a foldable seat comprising a seat cushion pivotably supported forward so as to be able to stand up, and a seat back pivotably supported forward so as to be foldable, one end of a link member is pivotally supported on a side surface of the seat cushion, A pivot pin is provided at the other end of the link member, the pivot pin is slidably supported in a guide groove formed along the vertical direction on the side surface of the seat bag, and the pivot pin is provided at the other end of the link member. A hook member is pivotally supported on the support pin, and the hook member is biased by a spring in a direction to be latched to a striker fixed to the floor, and a protrusion is formed on the other end of the link member to move the seat cushion forward. When in a standing state,
The pivot pin at the other end of the link member moves upward from below the guide groove, and the protrusion at the other end of the link member rotates the hook member against the bias of the spring to remove the hook member from the striker. A foldable seat characterized in that, when the seat bag is detached, the pivot pin is capable of pulling the seat bag forward and holding it in a reclined state.