JP2020147056A - Seat for vehicle - Google Patents

Abstract

To enhance convenience of a crew member by providing a seat for a vehicle capable of reclining a plurality of seat backs individually even though being such a condition as to attach a head rest striding on the plurality of seat backs while making it possible to attach and detach the head rest mounted to the plurality of seat backs at a time.SOLUTION: For solving the above subject, a seat 1 for a vehicle is configured so that a connection means 8 holds connection condition when attaching and detaching the first and second head rests 4a, 4b and the connection condition of the connection means 8 is released when reclining the first and second seat backs 3a, 3b at distinct angle by providing the connection means 8 on the first and second head rests 4a, 4b.SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle seat with a divisible headrest.

Since a headrest of a general vehicle seat is usually attached to each seat back, it is possible to recline a plurality of seat backs individually. On the other hand, since the headrests of the vehicle seats described in Patent Document 1 are attached across a plurality of seatbacks, the headrests attached to the plurality of seatbacks can be attached and detached at once.

Japanese Unexamined Patent Publication No. 2000-262348

However, in a general vehicle seat, there is a problem that when the headrest is attached / detached, the headrest attached to each seat back must be attached / detached individually. Further, in the vehicle seat disclosed in Patent Document 1, there is a problem that a plurality of seat backs cannot be individually reclined with the headrest attached.
An object of the present invention is to solve the above problems, and to provide a vehicle seat capable of individually reclining a plurality of seat backs in a state where a plurality of headrests that can be detached at the same time are attached.

In order to achieve the above object, the present invention has the following features.

The first invention includes a seat cushion on which an occupant sits, first and second seat backs attached to the seat cushion while tilting in the front-rear direction of the vehicle and lining up in the vehicle width direction, and a first seat. A vehicle seat including a first headrest attached to the back and a second headrest attached to the second seat back, the first and second headrests being detachably attached in a direction different from the tilting direction. , The first and second seat backs have a connecting means for connecting the first and second headrests when they have the same inclination angle with respect to the seat cushion, and the connecting means is the first in the connected state. It is characterized in that it regulates the release of the connected state due to the displacement of the second headrest in the attachment / detachment direction, and allows the release of the connected state due to the displacement of the seat backs of the first and second headrests in the tilting direction.

According to the first invention, the first and second headrests, which are attached across the first and second seat backs, maintain the connected state of the connecting means and become one with respect to the displacement in the attachment / detachment direction. Therefore, it can be attached and detached at the same time. Further, with respect to the displacement in the tilting direction when reclining the first and second seat backs, the connected state of the connecting means is released, so that the first and second seat backs can be set at different angles. It will be possible and the convenience of the occupants will be improved.

According to the second invention, in the first invention, the connecting means is provided on the first headrest and has a convex portion formed so as to project toward the second headrest, and a convex portion provided on the second headrest and has a convex portion. It is characterized by having a recess formed along the shape.

According to the second invention, the connecting means can be formed by the convex portion formed on the first headrest and the concave portion formed on the second headrest. Therefore, it is possible to form a connecting means by engaging the convex portion and the concave portion with a simple configuration without requiring a complicated configuration.

According to the third invention, in the second invention, the second headrest comes into contact with the first headrest when connected to the front surface supporting the occupant's head, the back surface located on the opposite side of the front surface, and the first headrest. It has a connecting surface, and the recess is formed so as to extend from the front surface to the back surface on the connecting surface.

According to the third invention, by forming the recesses from the front surface to the back surface, when the first and second seat backs are individually reclined while maintaining the connected state when the first and second headrests are attached and detached. Since the convex portion passes through the concave portion and the connected state is released, the connecting means can be made a simpler structure. Further, since the contact area between the convex portion and the concave portion in the attachment / detachment direction of the first and second headrests increases, the connected state can be stably maintained when the first and second headrests are attached / detached.

According to a fourth aspect of the invention, in the second or third invention, the convex portion is formed on the first headrest via an elastic member that can expand and contract in the protruding direction of the convex portion, and when the elastic member is in a contracted state, It is characterized by fitting in the first headrest.

According to the fourth invention, since the convex portion can be accommodated in the storage portion, even if the first and second headrests are set to different heights, the convex portion can be accommodated in the first headrest to accommodate the second headrest. The first and second seat backs can be set to the same reclining angle without the headrest getting caught in the convex portion of the first headrest.

The first and second headrests can be attached to and detached from the seat back with the first and second headrests integrated, and when reclining the seat back from the state where the first and second headrests are connected. Can recline the first and second seat backs individually because the connected state is released.

It is a perspective view of the vehicle seat in embodiment of this invention. It is a figure which shows the structure of the headrest in 1st Embodiment. FIG. 5 is a perspective view showing a state in which the headrest in a connected state is removed in the embodiment of the present invention. It is a figure which shows the state in which the seat back is reclining in the embodiment of this invention. It is a figure which showed the structure of the connecting means in 2nd Embodiment, (a) is the state which the spring member has a natural length, and (b) is the figure which shows the state which the spring member contracted.

Hereinafter, embodiments of the vehicle seat 1 according to the present invention will be described in detail with reference to the drawings.

(First Embodiment)
The vehicle seat 1 in FIG. 1 includes a seat cushion 2 on which an occupant sits, and a first seat back 3a and a second seat back 3b mounted side by side in the vehicle width direction of the vehicle. Further, on the first and second seat backs 3a and 3b, first and second headrests 4a and 4b that support the occupant's head are detachably attached to the first and second seat backs, respectively. There is.

The first and second seat backs 3a and 3b are independently attached to the rear end of the seat cushion 2 via a reclining mechanism (not shown) so as to be able to tilt in the front-rear direction of the vehicle.

The first and second headrests 4a and 4b are attached to the surface of the first and second seatbacks 3a and 3b opposite to the surface attached to the seat cushion 2. Further, the attachment / detachment directions of the first and second headrests 4a and 4b are directions that intersect with the tilting directions of the first and second seatbacks 3a and 3b, and for example, reclining of the first and second seatbacks 3a and 3b. When the tilt angle, which is an angle, is set to be perpendicular to the front-rear direction of the vehicle, it is the vertical direction of the vehicle, and the reclining angle is set to be horizontal to the front-rear direction of the vehicle. If so, it is in the front-rear direction of the vehicle. That is, it is in the radial direction with respect to the arc drawn as the tilting locus of the first and second seat backs 3a and 3b. Further, the first and second headrests 4a and 4b have a connecting means 8 including a convex portion 9 and a concave portion 10 described later.

As shown in FIG. 2, the connecting means 8 is connected by inserting the convex portion 9 formed in the first headrest 4a into the concave portion 10 formed in the second headrest 4b and engaging with the first and second headrests. 4a and 4b are connected to each other. Further, as shown in FIG. 2, the first and second headrests 4a and 4b have first and second connecting surfaces 11a and 11b which are surfaces in contact with each other when the connecting means 8 is connected.

FIG. 2 shows the vertical and horizontal directions of the first and second headrests 4a and 4b, the longitudinal direction of the front surface 16 supporting the occupant's head as left and right, and the direction perpendicular to the longitudinal direction as up and down. The convex portion 9 has an upper surface 20a provided above, a lower surface 20b provided below, and a convex surface 20c extending from the right end of the upper surface 20a to the right end of the lower surface 20b, and the convex portion 9 projects toward the second headrest. It is formed in a U shape on the first connecting surface 11a so as to do so. Further, the convex portion 9 extends from the front surface 16 to the back surface 17 which is the opposite surface along the reclining locus drawn at the same distance from the rotation axis which is the center of rotation when the first seat back 3a is reclining. Is postponed.

On the other hand, the concave portion 10 is formed on the second connecting surface 11b along the convex portion 9, and when the connecting means 8 is connected, the concave surface 30a is in contact with the upper surface 20a, the bottom surface 30b is in contact with the lower surface 20b, and the convex surface 20c. It has a concave surface 30c that is in contact with and extends from the right end of the ceiling surface 30a to the right end of the bottom surface 30b. That is, the recess 10 extends from the front surface 16 to the back surface 17 and is formed so as to be recessed along the reclining locus drawn at the same distance from the rotation axis which is the center of rotation when the second seat back 3b is reclining. The first and second seat backs 3a and 3b are tilted while drawing a locus of the same shape.

In the convex portion 9 and the concave portion 10, the first and second headrests 4a and 4b are adjusted to the same height, and the first and second seat backs 3a and 3b are held at the same reclining angle with respect to the seat cushion 2. If so, the connecting means 8 is formed at a position where it is in a connected state. As a result, the first and second headrests 4a and 4b are adjusted to the same height, and when they are set to the same reclining angle, they are integrated by the connecting means 8.

Next, the operation of the vehicle seat 1 configured according to the present embodiment will be described.

First, the operation of attaching and detaching the first and second headrests 4a and 4b will be described. As shown in FIG. 3, stays 6 are provided in the first and second headrests 4a and 4b, respectively, and the stays 6 are inserted into the attachment / detachment mechanisms 7 provided in the first and second seat backs 3a and 3b. It can be installed with. At this time, the stay 6 is fixed by the attachment / detachment mechanism 7 to maintain the attached state. Further, the first and second headrests 4a and 4b are in a state of being released from being fixed to the stay 6 by the detachable mechanism 7 by pushing a lock button (not shown) provided on the detachable mechanism 7, and the first and second headrests 4a and 4b are released. It can be removed from the seat backs 3a and 3b and the height can be adjusted.

Subsequently, an operation of removing the first and second headrests 4a and 4b from the first and second seat backs 3a and 3b in an integrated state will be described. First, the connecting means 8 is put into a connected state. Next, the lock button of the attachment / detachment mechanism 7 is pushed in so that the attachment / detachment mechanism 7 is released from being fixed to the stay 6. Then, the first and second headrests 4a and 4b are pulled out in parallel with the attachment / detachment direction. At this time, when only the first headrest 4a is lifted and pulled out, the upper surface 20a of the convex portion 9 is caught by the ceiling surface 30a of the concave portion 10, and the force is transmitted from the upper surface 20a to the ceiling surface 30a. The first and second headrests 4a and 4b can be lifted together. On the other hand, when only the second headrest 4b is lifted and pulled out, the bottom surface 30b of the recess 10 is caught by the bottom surface 20b of the convex portion 9, so that a force is applied from the bottom surface 30b of the recess 10 toward the bottom surface 20b of the convex portion 9. Is transmitted, so that the first and second headrests 4a and 4b can be lifted together.
That is, since the concave portion 10 is formed so as to sandwich the convex portion 9 between the ceiling surface 30a and the bottom surface 30b from the attachment / detachment direction, the attachment / detachment direction of the convex portion 9 when the first and second headrests 4a and 4b are pulled out in the attachment / detachment direction. By limiting the displacement to the recess 10 by the recess 10, the release of the connected state is restricted.

Further, since the connecting means 8 is put into the connected state and the stay 6 is inserted into the detachable mechanism 7 in parallel with the detachable direction, the release of the connected state is restricted against the displacement in the detachable direction. The two headrests 4a and 4b can be attached to the first and second seat backs 3a and 3b in an integrated state.

In this way, when the first and second headrests 4a and 4b are displaced in the attachment / detachment direction, the release of the connected state is restricted, so that the first and second headrests are attached across the first and second seatbacks. The second headrests 4a and 4b can be removed and attached at the same time in an integrated state.

Further, by forming the convex portion 9 and the concave portion 10 from the front surface 16 to the back surface 17 of the first and second headrests 4a and 4b, the ceiling surface 30a and the upper surface 20a or the lower surface 20b and the bottom surface 30b are inclined in the tilting direction. A large contact area can be secured as compared with the case where the convex portion 9 does not extend from the front surface 16 to the back surface 17. As a result, the contact area between the convex portion 9 and the concave portion 10 in the attachment / detachment direction of the first and second headrests as the connecting means 8 increases, so that the connection state is changed when the first and second headrests 4a and 4b are attached / detached. Can be kept stable.

Next, the operation of reclining the first and second seat backs 3a and 3b will be described. As shown in FIG. 4, the first and second seat backs 3a and 3b pull up the reclining lever 5 and apply a force in the tilting direction to the first and second seat backs 3a and 3b by the reclining mechanism. The reclining angle with respect to the seat cushion 2 can be freely set. Further, by returning the reclining lever 5 to the original state after setting the reclining angle, the set reclining angle can be maintained. The reclining lever 5 may be able to set the reclining angle of both the first and second seat backs 3a and 3b by pulling up, or the first and second seat backs 3a and 3b, respectively. A plurality of reclining angles may be provided so as to be able to set the reclining angle.

Subsequently, the operation when the first and second seat backs 3a and 3b in the connected state of the connecting means 8 are set to different reclining angles will be described. For example, when reclining the second seat back 3b, the reclining lever 5 is first pulled up. Next, a force is applied to the second seat back 3b in the reclining direction to release the connected state of the connecting means 8. At this time, the connecting state of the connecting means 8 is released by the convex portion 9 passing through the concave portion 10. Then, the angle is set to an arbitrary angle, and the reclining lever 5 is returned to the original state.

As a result, the second seat back 3b can be set to a reclining angle different from that of the first seat back 3a. It is also possible to recline the first seat back 3a to a different angle from the second seat back 3b.

As described above, according to the first embodiment, the first and second headrests 4a and 4b attached across the first and second seat backs 3a and 3b are integrated while maintaining the connected state of the connecting means 8. Therefore, it can be attached and detached at the same time. Further, when the first and second seat backs 3a and 3b are individually reclining, the connecting state of the connecting means 8 is released, so that the first and second seat backs 3a and 3b are set at different angles. Is also possible, and the convenience of the occupants is improved.

(Second Embodiment)
As shown in FIG. 5, the vehicle seat 1 in the second embodiment is the same as the first embodiment except for the connecting means 8 in a form different from that in the first embodiment. Specifically, it differs from the first embodiment in that the convex portion 109 forming a part of the first headrest 4a is provided via a stretchable spring member (elastic member) 51. The convex portion 109 is provided so as to project from the connecting surface 11a. The convex portion 109 has an upper surface 201a formed so as to draw an arc in the projecting direction, a lower surface 201b formed parallel to the upper surface 201a, and a convex surface 201c extending from the upper surface 201a to the lower surface 201b.

More specifically, the first headrest 4a is provided with a storage portion 52 for accommodating the convex portion 109 inside the first headrest 4a when the spring member 51 is contracted to minimize the length of the spring member 51. Has been done. The storage portion 52 is a space composed of a storage surface 52a substantially parallel to the connecting surface 11a and a wall surface 52b extending from the edge of the storage surface 52a toward the connecting surface 11a, and the convex portion 109 is formed on the storage surface 52a via a spring member 51. It is provided. Further, the convex portion 109 has a fixed portion 45 that regulates the movement of the convex portion 109 on the side opposite to the convex surface 201c. When the fixing portion 45 is in a natural length state in which no external force is applied to the spring member 51, the fixing portion 45 comes into contact with a part of the wall surface 52b of the storage portion 52 to regulate the displacement of the convex portion 109 in a direction other than the expansion / contraction direction.

The concave portion 110 is formed along the shape of the convex portion 109 excluding the fixing portion 45, and has a concave surface 301. When the second seat back 3b is reclining from the state where the connecting means 8 is in the connected state due to the convex portion 109 and the concave portion 110 meshing with each other, a force in the reclining direction is transmitted from the concave surface 301 to the convex surface 201c. As a result, as the second seat back 3b is reclining, the concave surface 301 presses the arc of the convex surface 201c, so that the convex portion 109 is gradually pushed into the storage portion 52, and the connected state of the connecting means 8 is released. Further, by forming the upper surface 201a and the lower surface 201b of the convex portion 109 in parallel, the convex portion 109 is not pushed into the storage portion 52 when the first and second headrests 4a and 4b are attached and detached, and the connected state can be maintained. ..

Therefore, also in the second embodiment, the first and second headrests 4a and 4b attached across the first and second seat backs 3a and 3b are connected by the convex portion 109 and the concave portion 110 which are the connecting means 8. Since the state is maintained and integrated, it can be attached and detached at the same time. Further, when reclining the first and second seat backs 3a and 3b, the spring member 51 contracts and the convex portion 109 is stored in the storage portion 52 to release the connected state. Therefore, the first and second seat backs 3a and 3b are reclining. The second seat backs 3a and 3b can be set at different angles, which improves the convenience of the occupant.

Further, in the second embodiment, the convex portion 109 can be accommodated in the storage portion by applying a force to the convex surface 201c, so that even when the first and second headrests 4a and 4b are set to different heights. By applying a force from the occupant or the second headrest 4b to the convex surface 201c, the convex portion 109 can be accommodated in the first headrest 4a, so that the second headrest 4b does not get caught in the convex portion 109 of the first headrest 4a. , 1st and 2nd seat backs 3a, 3b can be set to the same reclining angle.

In the second embodiment, a spring is used as the elastic member 51, but the present invention is not limited to this, and any material that can expand and contract in the linear direction may be used.

Further, although the connection means 8 has been described with reference to FIGS. 2 and 5, the connection means 8 is not limited to these embodiments. For example, when the first headrest 4a and the second headrest 4b are arranged side by side, the first and second headrests 4a and 4b are connected by generating a magnetic force, and when the reclining lever 5 is pulled up, the magnetic force is applied. An electromagnet mechanism that releases the magnet may be used. Further, as the connecting means 8, when a force in the attachment / detachment direction is applied, the convex portion protruding toward the concave portion of the second headrest 4b is maintained in a fixed state, and when a force in the tilting direction is applied. The mechanism may be such that the connected state is released by rotating the convex portion. With such a structure, it is easier because there is no need for wiring for sending current to the electromagnet and control means for controlling the regulation and release of the connection state, which are required when using the electromagnet mechanism. Structure can be made.

The present invention has been described in detail above based on the preferred embodiment, but the present invention is not limited to this, and can be changed without departing from the gist thereof. For example, in the first embodiment and the second embodiment, the case where two seat backs are mounted side by side has been described, but the number of seat backs may be as long as a plurality of seat backs are mounted side by side. Not limited. Further, although the embodiment in which a plurality of headrests are attached to the seat cushions has been described, seat backs may be attached to each of the plurality of seat cushions. Further, the convex portions and the concave portions of the first and second headrests may be interchanged with each other, or a plurality of convex portions may be provided.

1 Vehicle seat 2 Seat cushion 3a 1st seat back 3b 2nd seat back 4a 1st headrest 4b 2nd headrest 8 Connecting means 9,109 Convex 10,110 Recess 11a 1st connecting surface 11b 2nd connecting surface 16 Front surface 17 Back 51 Elastic member (spring member)

Claims (4)

The seat cushion on which the occupants sit and
The first and second seat backs attached to the seat cushions, which are tilted in the front-rear direction of the vehicle and lined up in the vehicle width direction of the vehicle,
The first headrest attached to the first seat back, the second headrest attached to the second seat back, and
It is a vehicle seat equipped with
The first and second headrests
It is detachably attached in a direction different from the tilting direction, and when the first and second seat backs have the same tilt angle with respect to the seat cushion, the first and second headrests are connected. Has a connecting means to
In the connected state, the connecting means regulates the release of the connected state by displacement of the first and second headrests in the attachment / detachment direction, and the first and second seat backs of the first and second headrests. A vehicle seat characterized in that the connection state is allowed to be released by displacement of the vehicle in the tilting direction. The connecting means
A convex portion provided on the first headrest and formed so as to project toward the second headrest,
A concave portion provided on the second headrest and formed along the shape of the convex portion,
The vehicle seat according to claim 1, wherein the vehicle has. The second headrest
The front that supports the occupant's head and
The back surface located on the opposite side of the front surface and
When connected to the first headrest, the connecting surface in contact with the first headrest and
Have,
The vehicle seat according to claim 2, wherein the recess extends from the front surface to the back surface on a connecting surface and is formed. The convex portion is formed on the first headrest via an elastic member that can expand and contract in the projecting direction of the convex portion, and is accommodated in the first headrest when the elastic member is in a contracted state. The vehicle seat according to claim 2 or 3.