JPH0614601Y2 - Vehicle seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle seat (especially an automobile seat), and more specifically, a seat back is laid down on a seat cushion, and the seat cushion is used together with the seat back. The present invention relates to a seat that is rotated 180 degrees to the vehicle floor so that the bottom surface of the seat cushion faces upward so that the bottom surface of the seat cushion can be used as a luggage carrier.

(Prior art and its problems) For this type of vehicle seat (third seat), since the seat back has a longer overall length than the seat cushion, when the seat back is laid down on the seat cushion, the front end of the seat cushion is collapsed. As a result, the top of the seat back protrudes, and this projection prevents the seat cushion together with the seat back from being accommodated in the low vehicle floor where passengers seated in the front third seat rest their feet. There is a part in which the upper seatback part is divided into a lower seatback part and a stay of the headrest is penetrated into the upper seatback part, and the upper seatback part is attached to the lower seatback part together with the headrest.

Therefore, when the seat is used as a cargo bed, the upper seat back portion is removed from the lower seat back portion together with the headrest, the lower seat back portion is laid down on the seat cushion, and the seat cushion is rotated 180 degrees forward, Since the total length of the lower seat back portion is shorter than that of the seat cushion, the seat cushion portion can be accommodated in the front vehicle floor, and the bottom surface of the seat cushion can be used as a cargo bed together with the vehicle floor where the seat cushion is installed. Also, when using it as a seat, the upper seat back part is used together with the headrest by attaching it to the lower seat back part with the stay of the headrest, but adjust the height position of the headrest according to the head position of the occupant. When the headrest is raised, the locking mechanism for locking the upper seatback section to the lower seatback section does not exist.Therefore, the upper seatback section also rises together with the headrest stay, and the raised upper seatback section is lifted. Had to be lowered to the lower seat back side by hand, which was very troublesome.

The present invention has been made in view of such a point, and when the headrest is raised, the upper seatback portion is locked on the lower seatback portion, and the vehicle seat is such that the upper seatback portion does not rise together with the headrest. The purpose is to provide.

(Means and Actions for Solving Problems) A vehicle seat according to the present invention has a protrusion formed on a lower surface of an upper seat back portion, and a fitting hole into which the protrusion is fitted on an upper surface of a lower seat back portion. Since the engaging member that can be engaged with and disengaged from the protrusion is provided in this fitting hole, the engaging member of the lower seat back portion is engaged with the protrusion of the upper seat back portion, and the upper and lower seats are seated. The back portions can be locked.

(Embodiment) An embodiment according to the present invention will be described below with reference to FIGS. 1 to 8. In the figure, (1) is an automobile seat (third seat), which comprises a seat cushion (2) and a seat back (3), and the seat back (3) is an upper seat back part (4) and a lower seat back part. (5) and is divided into two. The lower seat back portion (5) is mounted on the seat cushion (2) by a reclining device (6) so that the lower seat back portion (5) can be laid down and inclined rearward. Further, a headrest (7) is arranged above the upper seat back portion (4), and a pair of stays (8), (8) are integrally fixed to the headrest (7), and the stay (8), By (8), it is attached to the lower seat back part (5) together with the upper seat back part (4). That is, the upper seat back portion (4) is penetrated by the head restraint (7), the stay stays (8), (8), and when the head rest (7) is removed from the lower seat back portion (5), the upper seat back portion (4) ) Can also be removed together with the headrest (7).

Further, the configurations of the upper seat back portion (4), the lower seat back portion (5) and the headrest (7) will be specifically described.

The headrest (7) has a conventionally well-known structure, and a pair of stays (8), (8) are provided below the bottom surface thereof, and the stays (8), (8) are at least the upper seatback portion ( 4), it is formed longer than the conventional stay by the length of the upper seat back portion (4) in the up-down direction, and is formed on one lower side surface of the lower seat back portion (5). In order to be locked, upper and lower multistage locking notches are provided.

Through holes (9), (9) penetrating the headrest stays (8), (8) are opened in the upper seat back part (4), and synthetic resin is provided in the through holes (9), (9). Holders (10) and (10) which are made of through pipes are provided, and the inner diameters of the holders (10) and (10) are stays (8) and (8).
It is formed slightly larger than the outer diameter of. Further, a connecting member (11) is provided across the lower surface portions (10a), (10a) of the holders (10), (10), and a substantially central lower surface (11a) of the connecting member (11) is provided. ) Down,
That is, the protrusion (1
2) protrudes. The lower side surface (12
In a), a notch (13) for locking the upper seat back part (4) is formed in the lower seat back part (5).

That is, on the lower surface of the upper seat back portion (4), a protrusion (12) formed on the connecting member (11) between the stays (8) is projected at substantially the center thereof. In the figure, (4a) is a foam cushion material for the upper seat back portion (4), and
Reference numeral b) is a skin member that covers the foam cushion material (4a).

A frame frame in which holders (14) and (14), which are guide members through which the headrest stays (8) and (8) are inserted, form the lower seatback portion (5) at the top of the lower seatback portion (5). It is arranged on the frame fixed to (15). Further, the protrusion (1) of the upper seat back portion (4) is provided substantially at the center of the top of the lower seat back portion (5).
A holder (16) for locking 2) is arranged. This holder (16) is a lower seat back part (5)
The frame is fixedly attached to the frame body fixed to the frame (15), and the upper part thereof projects from the upper surface of the lower seat back part (5). That is, the upper collar portion (17) of the holder (16) has a hollow portion (18) formed therein, and the inner diameter of the hole (19) is the upper seat back portion (4).
It is formed to be slightly larger than the protrusion (12). The protrusion (12) of the upper seat back portion (4) is inserted into the hole (19) which is a fitting hole of the holder collar portion (17). further,
An engaging member (20) that engages with the protrusion (12) of the upper seat back portion (4) is disposed in the hollow portion (18) of the holder collar portion (17). The engaging member (20) is made of a leaf spring, one end (20a) of which is wound around and fixed to a projecting piece (21) formed in the hollow portion (18), and the other end (20b) of which is fixed.
Is provided so as to project from the hollow portion (18) of the holder collar portion (17) to the outside. That is, one end (20a) of this engaging member (20) is fixedly attached to the hollow protrusion (21) of the holder flange (17), and the central portion (20c) is provided with the hole (19) of the holder (17). ), The other end (20b)
Protrudes to the outside from a hole (22) formed in the outer wall (17a) of the holder collar (17). A knob member (23) is attached to the other end (20b) of the engaging member (20), and the knob member (23) is slid along the hole (22) of the outer wall (17a). The other end (20b) of the engaging member (20) moves about one end (20a),
The central portion (20c) of the engaging member (20) is the holder (1
When the knob member (23) is released by retreating from the state where it is closed across the hole (19) of 7) and the knob member (23) is released, the original state, the hole (19) of the holder (17) is opened by the elasticity of the engaging member (20). It will be in a closed state.

The seat cushion (2) has a front bottom surface pivotally attached to the vehicle floor so as to be pivotable forward at a hinge or the like. Further, a lock device for holding the headrest (7) at a predetermined height is provided on the top of the lower seat back portion (5), and this lock device has been conventionally used in this type of vehicle. The description is omitted because it is the same as that described above.

When the vehicle seat according to the above configuration is used as a seat, after the headrest stay (8) is inserted into the holder (10) of the upper seatback part (4), the upper center of the lower seatback part (5) is inserted. When the knob member (23) of the engaging member (20) attached to the holder collar (17) is swung in the direction of the arrow as shown in FIG.
0) retracts from the hole (19) of the holder (16), the headrest stay (8) and the protrusion (12) of the upper seat back portion (4) are connected to the lower seat back portion (5).
When the knob member (23) of the engaging member (20) of the holder collar portion (17) provided at the center of the top of the lower seat back portion (5) is released. , The engaging member (20) is engaged with the notch (13) formed in the protrusion (12) of the upper seat back portion (4) by the central portion (20c) of the engaging member (20) by its urging force. Then, the upper seat back portion (4) is locked and attached to the lower seat back portion (5). When the seated person wants to change the height of the headrest (7), the lock device provided at the top of the lower seatback portion (5) unlocks the headrest (7) to keep it at a predetermined height. Can be used. At this time, the center of the engaging member (20) arranged in the notch (13) of the protrusion (12) of the upper seat back portion (4) and the holder collar (17) of the lower seat back portion (5). Since the part (20c) is engaged, the upper seatback part (4) is locked by the lower seatback part (5), and the upper seatback part (4) is lifted by the rise of the headrest (7). The upper and lower seat back portions (4) and (5) can be integrally used as the seat back (3) without moving upward.

Next, when this seat is used as a luggage carrier, a hole is formed by forming the knob member (23) of the holder collar portion (17) of the lower seat back portion (5) on the outer wall (17a) of the collar portion (17). When it is slid along the portion (22) in the direction of the arrow in FIG. 5, the holder collar portion (1) of the lower seat back portion (5) is
The other end (20b) of the engaging member (20) in 7) swings around one end (20a), and the central portion (20c) of the engaging member (20) projects from the upper seatback portion (4). Department (1
Retreating from the notch (13) formed in 2), the holder lower end portion (10a), upper and lower seat back portions (4), (5)
Since the engagement state between them is released, the headrest (7) and the upper seatback portion (4) are removed from the lower seatback portion (5), and the lower seatback portion (5) is removed as shown in FIG. Is folded on the seat cushion (2) by the reclining device (6). Further, the seat cushion (2) is centered on the shaft attachment part on the front bottom surface.
When rotated by 0 degrees, this seat is accommodated in the vehicle floor with the bottom surface of the seat cushion (2) facing upward, and the vehicle floor on which the seat cushion (2) is placed and the bottom surface of the seat cushion (2) are flush with each other. It becomes possible to load luggage.

In the above embodiment, the holder collar (17) of the lower seat back portion (5) is provided with the engaging member (20) made of a leaf spring, but the engaging member is not limited to the leaf spring. However, any member having elasticity may be used.

(Effects of the Invention) According to this invention, a vehicle seat that produces the following effects can be obtained.

The engaging member arranged in the fitting hole of the lower seat back portion engages with the protrusion of the upper seat back portion, and can lock the upper and lower seat backs. Therefore, the upper seat back does not move.

Since the upper seat back portion can be locked to the lower seat back portion and used, the upper and lower seat back portions can be used as an integrated seat back.

By disengaging the engaging member of the lower seat back part from the protrusion of the upper seat back part, the upper seat back part can be removed from the lower seat back part. Can be used as

[Brief description of drawings]

1 is a perspective view of an automobile seat according to the present invention, FIG. 2 is an exploded perspective view of the seat of FIG. 1, and FIG. 3 is a perspective view showing a holder of an upper seat back portion of the seat of FIG. FIG. 4 is a perspective view showing a holder of a lower seat back portion in the seat of FIG. 1, FIG. 5 is a top view of the holder shown in FIG. 4, and FIG. 6 is a main part of the holder shown in FIG. FIG. 7 is a perspective view, FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6, and FIG. 8 is an explanatory view of an operating state of the seat shown in FIG. In the figure, (3) is a seat back, (4) is an upper seat back part, (5) is a lower seat back part, (7) is a headrest, (8) is a stay, (10) is a holder as a through tube, ( (12) is a protrusion, (16) is a holder having a flange, (17) is a flange, (19) is a hole which is a fitting hole, (2)
0) is an engaging member.

Claims (1)

[Scope of utility model registration request] 1. A lower seat back portion for attaching a seat back to a seat cushion so as to be able to fall down and connecting the seat back to the seat cushion, and an upper seat back portion formed separately from the lower seat back portion. The upper seat back portion is provided with a through pipe, the head rest stay is pierced through the through pipe, and is inserted into a guide member provided on the top of the lower seat back portion. In a vehicle seat in which a back portion is detachably attached from the lower seat back portion, a protrusion is formed on the lower surface of the upper seat back portion, and the protrusion is fitted on the upper surface of the lower seat back portion. A hole is provided, and an engaging member that can be engaged with and disengaged from the protrusion of the upper seatback portion is provided in the fitting hole of the lower seatback portion. Vehicle seat, characterized in that the set.