JPH0546691Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reclining seat, and is suitable for use as a reclining seat for theaters or railway vehicles, for example.

[Conventional technology]

Japanese Utility Model Application No. 61-139832 describes a reclining seat for a passenger car in which the headrest can be set to a position that suits the occupant's physique or preference regardless of the tilting position of the seatback. An easy chair that can be maintained in a fixed position with its arms raised is described in Japanese Utility Model Application Publication No. 153935/1983.

[Problems to be solved by the invention] However, the former had the problem of an extremely complicated structure, and the latter had the problem of not being comfortable to sit on and being large.

This invention solves the problems of the prior art, and aims to provide a reclining seat that is comfortable to sit on, has a simple structure, and is compact.

[Means to solve the problem]

The reclining seat of this invention connects the seat frame, whose rear side moves up and down using the front seat frame axis as a fulcrum, and the backrest frame, whose upper side moves up and down using the lower backrest axis as a fulcrum, with a linkage shaft that connects them for free movement. A pillow frame whose upper and lower parts swing around the pillow support shaft is placed between the upper parts of the backrest frame, and the upper end of the pillow connection rod, whose lower end is supported by the connection rod base shaft, is connected to the pillow frame by the connection rod support shaft. The restoring mechanism is pivotally attached to the lower end of the reclining seat, and has one end fixed to one side frame of the backrest frame and the other end fixed to the rear member of the reclining seat.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The reclining seat of this invention consists of a seat frame 1, a backrest frame 3, a pillow frame 6,
It is composed of 8 pillow connecting rods. As shown in FIGS. 1 and 2, the seat frame 1 has a seat frame base shaft 2 whose ends are inserted into the left and right vertical pieces of the front side of the frame body to the left and right legs (not shown) of the reclining seat. is penetrated laterally, and the rear point side is configured to move up and down using this base shaft 2 as a fulcrum.

A backrest frame 3 is arranged at a position on the rear side of the seat frame 1 so as to be freely raised and folded. The backrest frame 3 has left and right frame bodies shaped like stakes used in hooks arranged on both sides, and these frame bodies are assembled in a U-shape by cross members at the upper ends of both sides. The left and right tips on the lower side of the backrest frame 3 are loosely inserted into the left and right hanging pieces on the rear side of the seat frame 1, and the left and right tips have both ends attached to the left and right legs (not shown) of the reclining seat. The backrest base shaft 4 into which the holder is inserted is passed through laterally. Therefore, the backrest frame 3 is configured such that its upper side can be raised and lowered in the front and rear directions using the base end 4 as a fulcrum. Left and right hanging pieces on the rear side of the seat frame 1 are fitted into sliding contact with the left and right horizontal frame portions of the backrest frame 3 at the rear position of the base shaft 4 from the outside. backrest frame 3
Coordination shafts 5 are protruded from the left and right horizontal frames of the
An elongated through-hole S is provided in the left and right hanging pieces on the rear side of the seat frame 1, and by freely connecting the linking shaft 5 to the through-hole S, the backrest frame 3 uses the base shaft 4 as a fulcrum. When the seat frame 1 is raised up and down, the rear side of the seat frame 1 can also move up and down integrally. The same movement can be obtained by protruding the link shaft 5 from the left and right hanging pieces on the rear side of the seat frame 1, and by making the through holes in the left and right horizontal frame portions of the backrest frame 3 elongated holes.

A pillow frame 6 is swingably arranged between the upper parts of the backrest frame 3. The pillow frame 6 is a rectangular frame body, and the left and right frame portions and the lower frame portion of the lower portion thereof are bent into a hypotenuse shape projecting forward in a dogleg shape with respect to the upper side. A pillow support shaft 7 whose both ends are inserted into the left and right frame portions of the backrest frame 3 is passed through the left and right frame portions of this bent portion laterally. Therefore, the upper and lower parts of the pillow frame 6 are capable of swinging in the front-rear direction using the support shaft 7 as a fulcrum. A pillow connecting rod 8 is arranged at the lower end of the pillow frame 6 so that it can be raised and lowered. The pillow connecting rod 8 has a shape similar to the stake used in hotsukei, and the lower tip is placed at the center of the tip of the backrest frame 3 in a somewhat lower position, and the reclining seat is attached to this tip. Connecting rod base shaft 9 whose both ends are inserted into the seat member (not shown)
is penetrated horizontally. Therefore, the pillow connecting rod 8 is constructed so that the upper side can be raised and lowered in the front and rear directions using the base shaft 9 as a fulcrum. The upper end of the pillow connecting rod 8 fits into the center part of the lower frame of the pillow frame 6 and is pivotally connected by the connecting rod support shaft 10, and the pillow frame 6 is supported by the pillow supporting shaft 7 and the connecting rod support shaft 10, and the backrest Even if the frame 3 is raised and lowered, it is configured so that it can be maintained at a preset angle without accompanying the raising and lowering.

In order to return the backrest frame 3 to its original upright position, the reference numeral 11 shown in FIG. a restoring mechanism (e.g. gas spring). Legs are attached to the lower side of the reclining seat, and the necessary outer fabric is covered with the outer shell.

The reclining seat with the above configuration is
When the seated person tilts his or her upper body back, a backrest frame 3 connected to the rear side of the seat frame 1 via a linkage shaft 5 tilts back using a lower backrest base shaft 4 as a fulcrum. Therefore, when the backrest frame 3 is tilted backward, the linkage shaft 5 also descends, so that the rear side of the seat frame 1, which is movably connected by the linkage shaft 5, also descends.

When the backrest frame 3 is tilted backward, the pillow frame 6 disposed between the upper parts of the backrest frame 3 also moves in the backward direction of the backrest frame 3. Since a pillow connecting rod 8 whose upper side is raised and lowered using the rod base shaft 9 as a fulcrum is connected, the pillow frame 6 has a pillow support shaft 7 and a connecting rod support shaft 1.
0 and link support acts. Therefore, only the pillow frame 6 maintains its original angle without accompanying the backrest frame 3 when the seatback frame 3 is folded back, so that when the seatback frame 3 is folded back, the rear side of the seat frame 1 is lowered. With a comfortable posture, you can maintain your line of sight in its original state.

When the seated person raises their upper body, the backrest frame 3
The restoring mechanism 11 installed in the backrest frame 3 works to smoothly return the backrest frame 3 to its original position, so the rear side of the seat frame 1, which is connected to the backrest frame 3 via the linkage shaft 5, also works in a coordinated manner. At the same time, the pillow frame 6 also moves back in the same direction together with the backrest frame 3. At this time, since the lower end of the pillow frame 6 is connected to the upper end of the pillow connecting rod 8 via the connecting rod support shaft 10, link support by the pillow support shaft 7 and the connecting rod support shaft 10 acts on the pillow frame 6. As a result, the pillow frame 6 can return to its original position while maintaining a substantially constant angle.

[Effect of idea]

With this idea, when the backrest frame 3 tilts backward, the seat frame 1 sinks around the seat frame base axis 2, providing a good sitting comfort for the seated person. Pillow frame 6 is connected by connecting rod 8
is maintained at a preset angle, so the line of sight of the seated person does not change. Furthermore, since the restoring mechanism 6 is installed on the backrest frame 3 side, the space below the seat frame 1 can be reduced, making it possible to downsize.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of the reclining seat according to this invention, FIG. 2 is a side view of the reclining seat when it is standing up, and FIG. 3 is a side view of the reclining seat when it is being reclined. 1...Seat frame, 2...Seat frame base axis, 3
... Backrest frame, 4 ... Backrest axis, 5
... Cooperation axis, 6 ... Pillow frame, 7 ... Pillow support shaft, 8 ... Pillow connection rod, 9 ... Connection rod base shaft, 10 ... Connection rod support shaft, 11 ... Restoration mechanism.

Claims (1)

[Scope of utility model registration request] The seat frame, whose rear side moves up and down using the front seat frame axis as a fulcrum, and the backrest frame, whose upper side moves up and down using the lower backrest axis as a fulcrum, are freely connected by a linkage axis, and the upper part of the backrest frame is moved freely. A pillow frame is arranged in which the upper and lower parts swing with the pillow support shaft as a fulcrum, and the upper end of the pillow connecting rod whose lower end is supported by the connecting rod base shaft is pivotally connected to the lower end of the pillow frame by the connecting rod support shaft, A reclining seat characterized by being provided with a restoring mechanism in which one end is fixed to one side frame of a backrest frame and the other end is fixed to a rear member of the reclining seat.