JPH1120528A - Seal with headrest turn-down mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat, in which three or more occupants can be seated, with a headrest even at the center of the seat and a mechanism to move a center headrest anywhere from a preset position in simple operation. SOLUTION: For a seat 10 in which three or more occupants can be seated in array, a headrest 12 provided at the center is mounted on a turn-down part 20, which is connected to a backrest 14 mainbody to be turned down and reset to a seat cushion part 15 side independently from the backrest 14 mainbody. The turn-down part 20 is turned down to the seat cushion part 15 side, so that the headrest 12 at the center can be only turned down and reset from the upper edge of the backrest 14 to the seat cushion part 15 side in one unit with the turn-down part 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat having a backrest and a headrest.
More specifically, the present invention relates to a seat with a headrest folding mechanism capable of returning a headrest mounted near the center of a backrest in a chair-like seat where three or more people can sit.

[0002]

BACKGROUND OF THE INVENTION The rear seats (seats) in vehicles of various types such as automobiles or small motorboats are generally chaise-shaped seats on which three or more (including children) can sit. It consists of a seat cushion that keeps the person sitting and a backrest that forms a backrest. In such rear seats, since the rear visibility of the driver seated in the front seat is prioritized, many of the rear seats are not provided with a headrest that can obstruct the rear view. Also, even in the case where a headrest is provided in the rear seat, from the viewpoint of the driver's easy confirmation of the rear from the front seat, usually only a pair of left and right headrests are provided near both ends of the backrest. There is no headrest provided near the center of the seat (ie, near the center of the upper edge of the backrest). For example, the three-seat rear seat of a typical car (typically a sedan or station wagon) is provided with headrests for those seated at the left and right ends, but near the center of the seat excluding them. A headrest for a seated person (hereinafter, referred to as a “third seated person”) is not generally worn.

By the way, even in such a rear seat for an automobile, providing a headrest near the center of the seat is considered to contribute to improving the comfort, the usability, and the like of a third occupant. For this reason, in recent years, 3
A headrest is also provided in the center of the rear seat, and a seat devised so that the headrest does not hinder the driver's rear view has been developed. For example, JP-A-6-32165 discloses that a headrest for a third occupant is provided at a central portion of an upper edge of a backrest, and when a third occupant does not sit on the seat, a driver's There is described a three-seat rear seat for an automobile, which is provided with a mechanism capable of storing the headrest in a backrest so as not to hinder rearward confirmation. Alternatively, there has been proposed a device provided with a mechanism for inverting and storing a headrest at the time of non-use, which is applied to some types of vehicles, backward (ie, in a trunk room).

[0004]

However, the above-described conventional headrest storage mechanism for a rear seat for an automobile for preventing the driver from checking behind the vehicle is complicated in structure, and the number of parts used is limited. As a result, the increase in weight and cost of the sheet is one of the factors.

The present invention solves the above-mentioned conventional problem in the case where the third seat headrest is mounted on the seat while ensuring the rear visibility of the driver. A seat that can be seated by a person or more personnel and includes a headrest for the third occupant, and moves the third occupant headrest from a predetermined position by a simple operation as necessary. The object of the present invention is to provide a seat provided with a mechanism for obtaining the sheet.

[0006]

In order to solve the above-mentioned problems, according to the present invention, there are provided a seat cushion portion constituting a seat surface and a backrest constituting a backrest, and three or more persons are arranged side by side. A seat that can be seated, the upper edge of the backrest is provided with three or more headrests in parallel, and a part including the upper edge of the backrest is partially included in the backrest. It is connected to another portion and forms a reversible portion that can be returned to the seat cushion portion side independently of the other portion of the backrest so as to be capable of returning to the seat cushion portion side. One or more headrests near the center, excluding both ends, are attached to the retractable portion, and by folding the retractable portion toward the seat cushion portion, Of the three or more headrests, only the headrest attached to the tiltable portion can be tilted integrally with the tiltable portion so as to be able to return to the seat cushion portion side from the upper edge of the backrest. A seat with a headrest folding mechanism (hereinafter referred to as a first seat of the present invention).

[0007] In the first seat of the present invention, the folding portion is formed in the backrest, and three or more headrests are arranged side by side on the upper edge of the backrest. Further, those headrests that are arranged near the center except for both ends are mounted on the folding portion formed on a part of the backrest.
For this reason, in the first seat of the present invention, only the retractable portion on which the headrest is mounted independently of the backrest body (hereinafter referred to as a backrest component other than the retractable portion; the same applies hereinafter) is used as a seat cushion. The headrest can be returned to the seat cushion side integrally with the retractable portion. That is, in the first seat of the present invention, in addition to the provision of the headrest for the third occupant near the center of the backrest, the user is seated on both ends of the seat while the headrest is shifted toward the center. Only the headrest can be tilted to the seat cushion side together with the tiltable portion as needed. Therefore, according to the first seat of the present invention, for example, when applied to a three-seat rear seat of an automobile, the comfort of the third occupant is improved by providing a headrest for the third occupant. In addition to being able to be improved, it is possible to maintain the driver's rear visibility as required.

The present invention also provides a seat with a headrest tilting mechanism according to the first seat of the present invention, wherein the tiltable portion forms an armrest. Sheet).

In the second seat of the present invention, the collapsible section on which the third seat headrest is mounted also serves as an armrest of the seat. For this reason, in the second seat of the present invention, when the retractable portion is stored in the backrest main body, a headrest attached to the retractable portion is provided for the third occupant, When the collapsible section is fallen on the seat cushion section (that is, when there is no third occupant), the collapsible section can be used as an armrest as it is. Therefore, according to the second sheet of the present invention, in addition to the effects of the first sheet of the present invention, the usability (usability) of the sheet can be improved without excessively increasing the number of components.

Further, according to the present invention, in the first or second seat of the present invention, an operating portion for tilting the foldable portion toward the seat cushion portion by an external operation is provided at a front edge of the seat cushion portion. A seat with a headrest tilting mechanism (hereinafter, referred to as a "third seat of the present invention"), which is provided so as to be operable from the outside in a portion thereof.

According to the third seat of the present invention, the operating portion is provided at the front edge portion of the seat cushion portion. As a result, by operating the operating portion from the front of the seat, the collapsible portion and the retractable portion are provided. It is realized that the headrest mounted on the retractable portion is moved down to the seat cushion side. Therefore, when the third seat of the present invention is applied to, for example, a three-seat rear seat of an automobile, a front seat (for example, a driver seat)
The occupant operates the operation unit provided on the front edge of the seat cushion portion of the seat while sitting in the front seat without intentionally moving to the rear seat, thereby backing the third occupant headrest. It can be dropped from the upper edge of the rest. Therefore, according to the third sheet of the present invention, in addition to the effects of the first and / or second sheets of the present invention, the usability of the sheet can be further improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a preferred embodiment of the seat of the present invention (including the first, second and third seats of the present invention; the same applies hereinafter), a three-seat rear seat of an automobile is described. An example of application to the present invention will be described with reference to the drawings.

FIG. 1 is an external view of an automobile seat 10 according to an embodiment of the present invention. As shown in FIG. 1, the vehicle seat 10 includes a seat cushion 15 that forms a seat surface and a backrest 14 that forms a backrest, similarly to a general vehicle seat. Each of these is composed of a pad material or a cover material made of polyurethane foam or the like, and a frame for fixing and supporting these members. The vehicle seat 10 has a size that allows three adults to sit side by side, and headrests 11, 12, and 13 for each occupant are provided side by side on the upper edge portion of the backrest 14.

As shown in FIG. 1, this backrest 14
In the center portion including a part of the upper edge of the backrest 14, a fallable portion 20 rotatably connected to the main body of the backrest 14 is formed.
In a normal state, the collapsible section 20 is housed in the backrest 14 main body and is integrated with the backrest 14 main body.
The foldable portion 20 is formed so as to be able to be used also as an armrest in the vehicle seat 10 and can be slidably returned to the seat cushion portion 15 side by an operation described later (see FIG. 2). Then, of the headrests 11, 12, and 13 described above, the backrest 14
The headrest 12 provided at the center (hereinafter, referred to as “central headrest 12”) is disposed at the upper edge of the collapsible section 20. The mounting structure and operating mode of the folding unit 20 will be described later.

The operating portion 16 of the present invention is provided near the center of the lower front edge of the seat cushion portion 15 of the vehicle seat 10. The operating portion 16 is provided with the retractable portion 20. An operation lever 16a for tilting to the 15 side is provided so as to be operated from the front of the vehicle seat 10. Thus, as shown in FIG.
In the vehicle seat 10, the operation lever 16
a by operating the seat cushion portion 15 independently of the backrest 14 main body.
Can be knocked to the side. As a result, in the vehicle seat 10, only the central headrest 12 of the three headrests 11, 12, 13 arranged on the upper edge of the backrest 14 is integrated with the retractable portion 20 toward the seat cushion 15. Can be beaten.

As shown in FIG. 3, the automobile seat 10
A support frame 26 for supporting the shape of the foldable portion 20 is disposed inside a polyurethane foam pad material constituting the entirety of the foldable portion 20. A hinge pin mounting portion (not shown) is provided at a lower end portion of the support frame 26, and the hinge pin 34 is mounted to the mounting portion in a state where both ends of the hinge pin 34 penetrate and are exposed to both side surfaces of the collapsible portion 20. Have been. Meanwhile, the support frame 2
A headrest support 46 is provided on an upper part of the head 6. In contrast, an insert frame (not shown) is built in the central headrest 12, and
A stay 44 fixed to the frame protrudes downward. By inserting the stay 44 into the headrest support 46 and attaching the snap ring 46a (FIG. 4) to the surface of the insertion portion, the center headrest 12 is attached to the upper edge of the collapsible portion 20. I have.
Hereinafter, the mechanism for tilting the center headrest 12 in the vehicle seat 10 will be described in detail.

As shown in FIG. 3, a backrest frame 30 which forms the skeleton of the backrest 14 is provided on the back side of the backrest 14. Backrest 14
Mounting bracket 32 for pivotally connecting to the body
Is provided. The mounting bracket 32 has a U-shape that allows the folding portion 20 to be sandwiched from both sides, and has a hinge pin mounting hole for mounting the hinge pin 34 at both ends.

As shown in FIG. 4, the folding bracket 20 is sandwiched between the mounting brackets 32, and both ends of the hinge pins 34 exposed on both side surfaces of the folding bracket 20 are connected to the above-mentioned ends of the mounting bracket 32. It is rotatably mounted in the hinge pin mounting hole. This allows
It is realized that the reversible part 20 is rotatably connected to the main body of the backrest 14 using the hinge pin 34 as a rotation axis (see the arrow in FIG. 4). Further, in the vehicle seat 10, a helper spring (not shown) is provided on the back surface of the mounting bracket 32, and one end thereof is
When the retractable portion 20 is stored in the main body of the backrest 14, the hinge pin 34 is attached to the hinge pin 34 so that the retractable portion 20 can automatically fall toward the seat cushion 15 by the restoring force (repulsive force) of the spring. It is fixed.

On the other hand, as shown in FIG. 2, a concave portion 22 is formed on the back side of the retractable portion 20 (that is, on the side facing the backrest frame 30). Bar 2 for engaging hook piece 24
2a is installed. On the other hand, the backrest frame 30 is provided with a hook piece 24 that can engage with the engaging rod 22a at a position corresponding to the recess 22 when the retractable portion 20 is stored in the backrest 14 body. ing. That is, as shown in FIG. 3, the hook piece 24 is attached to a mounting bracket 40 provided on the backrest frame 30 with the center thereof serving as a fulcrum. One end of the hook piece 24 forms an acutely bent hook portion and is exposed on the surface of the retractable portion 20 of the main body of the backrest 14 (FIG. 2), and as shown in FIG. The hook is engaged with the engaging rod 22a. Accordingly, when the retractable portion 20 is stored in the main body of the backrest 14, it is possible to prevent the retractable portion 20 from automatically falling down to the seat cushion portion 15 by the action of the helper spring.

As shown in FIG. 3, an operation wire 18 connected to an operation section 16 described later is connected to a backrest frame 30.
Is attached to the other end of the hook piece 24 via a wire bracket 41 fixedly mounted on the hook piece 24. Further, a return spring 42 provided on the hook piece mounting bracket 40 is attached to the hook piece 24 so that the hook piece 24 can be pulled in a direction opposite to the operation wire 18 (see FIG. 4). (See FIG. 3). That is, in the vehicle seat 10, the hook portion side of the hook piece 24 is raised in conjunction with the operation wire 18 being pulled downward in the backrest 14 against the restoring force of the return spring 42, and as a result, Then, the engagement between the engagement rod 22a and the hook piece 24 is released. And
When the pulling operation of the operation wire 18 is released, the hook piece 24 returns to the original position (that is, a position where the hook piece 24 can be engaged with the engaging rod 22a) by the restoring force of the return spring 42.

Next, the operation section 16 of the vehicle seat 10 will be described. As shown in FIG. 3, the operation unit 16 according to the present embodiment is roughly a casing 17 provided at a lower front edge of the seat cushion unit 15.
And an operation lever 16a installed on the casing 17
And an operation wire 18 connected to the operation lever 16 a in the casing 17. The front part (the seat front side) of the casing 17 is opened, and the tip of the operation lever 16a is exposed at the opening so as to be operable from the outside (see FIG. 2). 2 and 3
As shown in FIG. 2, the operation wire 18 is provided from the bottom of the seat cushion portion 15 along the back surface of the backrest 14 with the casing 17 as a starting point, and the distal end thereof is fixed to the backrest frame 30 as described above. It is attached to the hook piece 24 via the provided wire bracket 41 (see FIG. 3).

On the other hand, one end of the operation wire 18 is connected to the operation lever 16a in the casing 17.
That is, as schematically shown in FIG.
Inside, an L-shaped operation lever 16a is provided rotatably about a rotation shaft 16b, and the operation wire 18 and the spring 19 are fixed to one side thereof. As a result, when the operator manually operates the operation lever 16a (see the arrow in FIG. 6), the operation wire 18 is pulled forward of the seat. When the operator releases his / her hand from the operation lever 16a, the operation lever 16a returns to a predetermined position by the restoring force of the spring 19 and the return spring 42 (FIG. 3), and at the same time, the operation wire 18 Is also pulled back to the rear of the seat.

As a result of the above construction, the present automobile seat 10
In the first embodiment, by manually operating the operation lever 16a provided on the operation portion 16 at the front edge portion of the seat cushion portion 15, the collapsible portion 20 and the central headrest 12 are provided.
The center headrest 12 can be tilted toward the seat cushion 15 without touching. That is, the operation wire 18 is pulled forward by the operation of the operation lever 16a, and the engagement between the hook piece 24 and the engagement rod 22a is released. At this time, as described above, the action of the helper spring fixed to the hinge pin 34 in the mounting bracket 32 causes the collapsible portion 20 to automatically turn around the hinge pin 34, and as a result,
Seat cushion part 1 with center headrest 12
5 (see the arrow in FIG. 3). The foldable portion 20 that has been laid down on the seat cushion portion 15 can be used as an armrest in the vehicle seat 10 as it is (see FIG. 2). If the retractable portion 20 is raised and stored in the backrest 14 body again,
What is necessary is just to raise the collapsible part 20 directly against the helper spring force, and to engage the engaging rod 22 a on the back side of the collapsible part 20 with the hook piece 24.

As described above, according to the vehicle seat 10, since the central headrest 12 is provided,
The third occupant can also comfortably use the seat. The center headrest 12 can be operated with one touch by the operation from the front of the seat.
Since the driver can be tilted to the fifth side, the rear visibility of the driver can be kept good as required. Further, the central headrest 12 can be integrated with the collapsible part 20 independently of the other headrests 11 and 13. For this reason, even when the center headrest 12 is lowered, no inconvenience occurs for the occupants near the both ends of the seat (those other than the third occupant). Further, the foldable portion 20 that is laid down together with the central headrest 12 can function as an armrest in that state, thereby contributing to improved convenience of the seat.

In addition, the center headrest 12 of the vehicle seat 10 has other headrests 11, 1 attached thereto.
As in the case of the third embodiment, a general headrest up / down adjustment mechanism is employed to further improve the comfort of the third occupant. The vertical adjustment mechanism employed in the central headrest 12 is based on a general tension based on the tension between a groove provided in the stay 44 (FIG. 3) and a clip (not shown) provided in the insert frame. Since the mechanism is widely used in domestic cars and does not characterize the present invention, a detailed description is omitted.

The preferred embodiment of the seat of the present invention applied to the rear seat of an automobile has been described above with reference to the drawings. As the seat of the present invention, only the headrest 12 for the third occupant is described above. The vehicle seat 10 is not limited to the above-described vehicle seat 10 shown in the drawings as long as it can be returned to the seat cushion 15 side together with the retractable portion 20 of FIG. For example, in the above-described embodiment, the present invention is applied to an undivided integrated rear seat of an automobile. However, the present invention is not limited to this embodiment. For example, the seat of the present invention can be preferably applied to a so-called 6: 4-split retractable three-seat automobile seat 50 as shown in FIG. 7 (in FIG. 7, for convenience, a 60-split seat and a 40-split seat are used). The sheet and the sheet are shown separately, but they are actually touching.) Also in this case, similarly to the above embodiment, the central headrest 5 out of the three headrests 51, 52, 53 arranged in parallel with the upper edges of the backrests 54a, 54b.
60% split backrest 5 so that only 2 can be defeated independently
What is necessary is just to provide the foldable portion 60 on the 4b side, and no special processing is required. The operation unit 16 can be installed on either the 60% split seat cushion 55b or the 40% split seat cushion 55a.

Further, in the above-described embodiment, the tiltable portion 20 is tiltably returned by the manual operation of the operating portion 16 and the helper spring of the mounting bracket 32. However, the present invention is not limited to such mechanical means. Absent. For example, a reclining motor used in a conventional automobile power seat is provided on the mounting bracket 32 in place of the helper spring, and the hinge pin 34 is operably connected to the motor, and the operation unit 16 or the operation The motor may be operated by an electric signal from a switch provided in a seat (cockpit), and the tiltable portion 20 may be tilted electrically recoverably. Such a change in the folding means is merely a matter of design for a person skilled in the art based on the disclosure information in the present specification and the drawings, and does not depart from the present invention.

[0028]

According to the seat of the present invention, when applied to, for example, a three-seat rear seat of an automobile, by providing a headrest for the third occupant, the comfort of the third occupant can be improved. Can be improved, and the rear visibility of the driver can be kept good by a simple operation.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an automobile seat as one embodiment of the present invention.

FIG. 2 is an overall perspective view of an automobile seat as one embodiment of the present invention.

FIG. 3 is an explanatory diagram schematically showing a headrest folding mechanism according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram schematically showing a structure of a foldable portion in one embodiment of the present invention.

FIG. 5 is an explanatory diagram schematically showing a partial structure of a foldable portion in one embodiment of the present invention.

FIG. 6 is an explanatory diagram schematically showing a structure of an operation unit according to the embodiment of the present invention.

FIG. 7 is an overall perspective view of an automobile seat as another embodiment of the present invention.

[Explanation of symbols]

 10, 50 Automotive seat 11, 12, 13, 51, 52, 53 Headrest 14, 54a, 54b Backrest 15, 55a, 55b Seat cushion part 16 Operation part 16a Operation lever 17 Casing 18 Operation wire 20, 60 Folding part 22 recess 22a engaging rod 24 hook piece 26 support frame 30 backrest frame 32 mounting bracket 34 hinge pin

Claims (3)

[Claims] 1. A seat having a seat cushion constituting a seating surface and a backrest constituting a backrest, wherein three or more persons can sit side by side. One or more headrests are provided side by side, a portion including a portion of the upper edge of the backrest being connected to and independent of the other portion of the backrest. To form a reversible portion that can be returned to the seat cushion portion side, wherein one or more headrests near the center of the three or more headrests excluding both ends are: It is attached to the retractable portion, and the retractable portion is tilted toward the seat cushion portion to thereby be attached to the retractable portion of the three or more headrests. A seat with a headrest tilting mechanism, characterized in that the headrest alone can be returned to the seat cushion side from the upper edge of the backrest integrally with the tiltable portion. 2. The seat with a headrest tilting mechanism according to claim 1, wherein the tiltable portion forms an armrest. 3. An operation section for externally operating the tiltable section toward the seat cushion section by an external operation so as to be operable from outside at a front edge portion of the seat cushion section. Item 3. The seat with the headrest folding mechanism according to item 1 or 2.