JPH0611232Y2 - Seat structure - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to the structure of a seat installed in a vehicle or the like.

(B) Conventional technology Conventionally, for example, seats in medium- and long-distance buses and trains are arranged at regular intervals in the front and back, and each seat has a backrest portion standing upright at the rear of the seat portion. Is tilted backwards and has a lining structure so that a comfortable posture can be taken.

Then, at the lower back part of the backrest of each seat, the footrest is placed at substantially the same height as the seat, and the person seated on the seat immediately behind the footrest places the toes on the footrest, By extending the legs almost horizontally, it is possible to take a comfortable reclining posture.

(C) Problems to be solved by the invention However, in the case of the seat structure described above, since the footrest is attached to the back of the backrest, the seated person should fully extend his / her feet to reach the footrest. When the tip can be placed, there is a problem in that the space between adjacent seats in the front and rear becomes wide, and the transportation efficiency and the like are deteriorated in the case where the installation space is limited such as both vehicles.

(D) Means for Solving the Problem Therefore, in the present invention, in the seat structure in which the seat portion is mounted on the seat supporting machine frame and the backrest portion is erected on the rear portion of the seat supporting portion, the seat support is provided. The part located on the upper rear side of the machine frame,
It is formed by a toe insertion case that is formed into a box shape with a rear opening made of steel plate.The toe insertion case has a lateral width that is approximately the same as the lateral width of the backrest, and an upper and lower width that is the upper end of the seat. Formed wide above the upper surface and lower than the lower surface of the seat, and on the left and right side walls of the same-foot insertion case, the lower parts of the left and right vertical frames of the backrest are respectively arranged back and forth. In addition to pivotally supporting, the front end of the foot cradle is attached to both left and right side walls via a pair of left and right mounting brackets so that it can be rotated up and down. It is formed in a size that allows it to be occluded, and is erected upward to close the rear opening of the toe insertion case, and the rear opening of the toe insertion case is laid down rearward until it becomes substantially horizontal. Tilt to the open position There is provided St. seat structure characterized in that the standing.

(E) Operational Effects According to the present invention, the following operational effects occur.

Since the upper part of the rear side of the seat support machine frame is formed by the foot insertion case formed by the steel plate in the rear opening shape, and the rear opening of the foot insertion case is substantially flush with the back surface of the backrest, It is possible to secure a space for disposing the toe insertion case in the seat disposing space while ensuring the strength of the seat supporting machine frame.

The rear opening of the toe insertion case is formed to have substantially the same width as the lateral width of the backrest, and the upper and lower widths of the same foot insertion case are located above the upper surface of the seat and the lower end is Since the seat is formed to have a wider width below the lower surface of the seat, the space for inserting the foot can be widened, and the degree of freedom of the foot can be increased.

Since the lower part of the left and right vertical frames of the backrest and the front end of the footrest are attached to the left and right sidewalls of the foot insertion case, respectively, the left and right sidewalls are shared as the support member for the backrest frame and the footrest. In addition, it is not necessary to separately provide a supporting member, the space for disposing the supporting member can be reduced, and the seat supporting machine frame can have a simple structure and a strong structure.

By raising the foot cradle attached to the foot tip insertion case to the retracted position, the foot pedestal can close the rear opening of the foot tip insertion case, while the foot pedestal falls to the foot rest use position. By doing so, the rear opening of the toe insertion case can be opened, and the toe can be inserted into the toe insertion case with the foot resting on the foot cradle.

At this time, since the foot cradle is formed to have a width that is substantially the same as the left-right width of the backrest portion, and has a size capable of closing the rear opening of the foot insertion case, the foot on the foot cradle may be closed. It is possible to secure a large degree of freedom of the seat, and it is possible for the seated person to take a comfortable sitting posture.

(F) Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

In FIG. 1, (10) is a seat support machine frame erected on the floor surface (F) of the vehicle, which is formed by welding and assembling a steel pipe.

Further, (11) is a seat part which is placed on the upper part of the seat support machine frame (10) and is provided with armrest parts (12) and (12) on both sides. It is thicker than.

Further, (13) is a backrest portion that is erected upward from the rear portion of the seat portion (11), and the backrest portion (13) is the left and right side walls (41a) of the toe insertion case (41) described later. The lower ends of the left and right vertical frames (13a) (13a) are attached to the (41a) by the pivots (14) and (14) so as to be tilted and erected in the front-rear direction.

Then, the extension ends (13b) (13b) extending downward from the lower ends of the left and right vertical frames (13a) (13a) and the cylinder extending downward from the front upper frame (10a) of the seat support frame (10). A lock mechanism (R) is provided between the connecting bracket (15) and
The lock mechanism (R) allows the backrest portion (13) to be held at an arbitrary inclination angle.

In addition, the lock mechanism (R) is the actual application 1
It can be configured similarly to the one described in -51060.

Further, the rear portion of the seat portion (11) is configured to be capable of being raised in association with the tilting of the backrest portion (13).

That is, as shown in FIG. 1, the front upper frame (10a) of the seat support frame (10) has a bracket (2
The base end of (0) is fixedly connected, and the lower end of the pivot bracket (21) protruding from the front part of the bottom plate (11a) of the seat part (11) is pivoted to the extension end of the bracket (20). Connected by (22).

With such a configuration, the rear portion of the seat portion (11) can rotate in the up-down direction around the pivot shaft (22).

On the other hand, the rear end of the bottom plate (11a) of the seat (11), the base end of the interlocking bracket (23) extending rearward is connected, the interlocking bracket (23), the interlocking mechanism (described below). By M), the back portion (13) can be moved in the vertical direction in conjunction with the tilting movement of the back portion (13), and the rear portion of the seat portion (11) can be raised upward.

That is, in this embodiment, as shown in FIG. 1, the interlocking mechanism (M) attaches the roller guide rail (30) having a concave cross section to the rear extension end of the interlocking bracket (23) in a substantially horizontal state. In the guide rail (30), the rolling roller (31) is movably arranged along the guide rail (30),
Constructed by pivotally connecting the support shaft of the rolling roller (31) to the front end of the backrest side bracket (33) fixed to the lower ends of the left and right vertical frames (13a) (13a) of the backrest (13). is doing.

With such a configuration, when the backrest portion (13) is tilted rearward with the pivot axis (14) as the tilt center, the backrest side bracket (33) is also tilted integrally with the tilt (13) in conjunction with the tilt. The rolling roller (31) pivotally supported at the lower end
It will rotate while drawing a rotation trajectory around.

The rolling track of the rolling roller (31) intersects the direction of the roller guide rail (30), so
(31) is rotating around the pivot axis (14) and moves in the roller guide rail (30), whereby the roller guide rail (30) and the interlocking bracket (23) integral with the roller guide rail (30).
Will also move upwards. By this movement, the seat part fixedly connected to the upper part of the interlocking bracket (23)
(11) rotates around the pivot (22) in the vertical direction, and the rear part is raised.

Therefore, the angle formed by the seat portion (11) and the backrest portion (13), that is, the bending angle (θ) can be made larger than that when only the backrest portion (13) is tilted. ,
Passengers can sit more comfortably and can easily take a resting posture.

Further, (16) is a footrest mounted on the seat support frame (10), and from the use state in which it is projected forward of the seat (11) through the footrest removal mechanism (17). It can be retracted and retracted just below the seat (11) to the retracted state. (18) is a stay that supports the rear end of the footrest loading / unloading mechanism (16).

In the seat (A) having such a basic structure, the backrest part
At the upper rear side of the seat support machine frame (10) located immediately below the (13), a concave toe insertion section (40) having an open rear surface is formed.

The gist of the present invention resides in the structure of the toe insertion portion (40).
A description will be given below with reference to FIGS. 1 and 2.

That is, the toe insert portion (40) is formed by a rear opening-shaped toe insert case (41), and the case (41) is formed of a steel plate and is part of the seat support frame (10). Is formed.

Then, the toe insertion case (41) has a lateral width of the backrest portion.
It is formed to be approximately the same as the left and right lateral width of (13), and the upper and lower widths are formed to a width (for example, 30 cm) that allows an adult male toe to be inserted easily, increasing the degree of freedom of the toe, and The front-rear width that is the depth is as wide as possible (in this embodiment, the seat support frame is
It is formed to be approximately half of the front and rear width of (10) so that the seated person can extend the legs substantially horizontally and take the phosphorus lining posture even if the distance between the front and rear seats (A) is reduced. .

Further, (50) is a foot cradle attached to the toe insertion case (41), and the left and right width of the foot cradle (50) is equal to the toe insertion case (4
It is slightly wider than the left and right width of 1), and the front and rear width is formed to be approximately the same as the height of the case (41), and the toe insertion case (41)
Attach the front end of the foot cradle (50) to the left and right side walls (41a) (41a) of the pivot pin (52) (5) via the pair of left and right mounting brackets (51) (51).
2) is attached so that it can be rotated up and down, and it stands up and closes the rear opening of the foot insertion case (41), and a storage position.
A case where you can lay your feet down until they are almost horizontal and insert your toes
(41) It can be tilted up and down with respect to the footrest use position where the rear opening is opened.

Then, the foot cradle (50) has its upper surface flush with the bottom surface of the toe insertion case (41) in the use state, to widen the area on which the toe can be placed and The degree of freedom of placement is increased.

Further, the foot cradle (50) is adapted to close the opening surface of the toe insertion case (41) in the retracted state.

The embodiment of the present invention is configured as described above, and according to this embodiment, the following operational effects are produced.

That is, in the present embodiment, when the seated person takes a reclining posture, by inserting the toes in the rear opening-shaped toe insertion case (41) formed in the seat (A) on the front side,
You can extend your legs completely.

At this time, since the foot tip insertion case (41) forms the upper rear side of the seat support machine frame (10), the foot tip insertion space is provided while ensuring the strength of the seat support machine frame (10). It can be widened to increase the flexibility of the toes, and the distance between the seats (A) adjacent to the front and rear can be made smaller.In vehicles, etc., increase the number of seats to improve transportation efficiency. You can

[Brief description of drawings]

 FIG. 1 is a side view of the seat according to the present invention with a part thereof omitted. FIG. 2 is a rear view of the main part. (A): Seat (10): Seat support frame (11): Seat (12): Armrest (13): Backrest (40): Foot insertion part (41): Foot insertion case (50) : Footrest

 ─────────────────────────────────────────────────── ───Continued from the front page (56) Bibliography Showa 59-102536 (JP, U) Showa 1-150054 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A seat structure in which a seat portion (11) is placed on a seat support frame (10), and a backrest portion (13) is erected on the rear portion of the seat portion (11). The part located on the upper rear side of the support frame (10) is formed by a toe insertion case (41) formed by a steel plate in a box shape with a rear surface opening, and the toe insertion case (41) has a left and right lateral width. The width of the backrest (13) is approximately the same as the lateral width of the backrest (13), and the upper and lower widths of the backrest (13) are positioned above the upper surface of the seat (11) and the lower end of the seat (1).
1) is formed to be wider than the lower surface, and the left and right side vertical frames (13a) (13a) of the backrest (13) are formed on the left and right side walls (41a) (41a) of the same-foot insertion case (41). ) And the left and right side walls (41
Attach the front end of the foot cradle (50) to a) (41a) via the pair of left and right mounting brackets (51) and (51) so that it can rotate up and down. (41) The rear opening is formed in a size that can be closed, and is erected upward to stand up to the retracted position where it closes the rear opening of the toe insertion case (41) and the rearward substantially horizontal state. Let Toes Insert Case (41)
A seat structure characterized in that it can be tilted up and down between a position where the footrest is used and the rear opening is opened.