JP2004155269A - Seat head rest - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the seating comfort by making flush of a front face component of a head rest body and a front side surface of a seat back in a use position, in the head rest of the type where the front face component 1 of the head rest body is overlapped with the front surface of the seat back. <P>SOLUTION: In this head rest of a seat including a head rest body 14 having a top face component 14A with a stay 24 at its lower portion and a front face component 14B extending downward from the component 14A to the front face side of the stay 2, when the head rest body 14 is at a stored position where the stay 24 is pushed in a seat back 12, the front face component 14B is overlapped with a front side surface 12a of the seat back 12. Also when the body 14 is at the use position where the stay 24 is pulled out from a location of a dented portion 12c in the seat back 12, the component 14B and the front side surface 12a of the seat back 12 are almost flush. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a headrest for a vehicle seat, and more particularly to a headrest of a type in which a part of the headrest when in a stowed position overlaps a front surface of a seatback.
[0002]
[Prior art]
For this type of headrest, for example, a technique disclosed in Patent Document 1 is already known. The headrest according to this technique includes a top surface component and a front surface component integrally extending downward from the front side of the top surface component. The top surface component is provided with a pair of stays extending downward from the lower surface. The upper ends of both stays are fixed to the headrest frame inside the top surface constituting part. When the headrest is in the retracted position, the front component thereof overlaps with the front surface of the seatback, thereby reducing the amount of protrusion of the headrest from above the seatback.
[0003]
[Patent Document 1]
JP-A-11-290154
[Problems to be solved by the invention]
When operating the headrest from the storage position to the use position, the stay is pulled upward from the inside of the seatback, and the height is adjusted according to the amount of pullout. The headrest at this time moves straight upward from the storage position along the axis of the stay. As a result, the front component of the headrest, which overlaps the front surface of the seatback at the storage position, projects forward from the front surface of the seatback even at the use position. Therefore, a step is generated between the front surface of the seat back and the headrest, and the sitting comfort is reduced.
An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to improve the sitting comfort by making the front component of the headrest body and the front surface of the seatback in the use position substantially flush. That is.
[0005]
[Means for Solving the Problems]
The present invention is to achieve the above object, and the invention according to claim 1 is characterized in that the headrest main body has a top component having a stay at a lower portion, and a front surface side of the stay from the top component. A headrest for a seat, comprising: a front component extending downward; wherein the headrest body is at a storage position where the stay is pushed into the seatback, and the front component is a front surface of the seatback. Polymerizes into Further, when the headrest body is in a use position in which the stay is pulled upward from inside the seatback, the front component and the front surface of the seatback are configured to be substantially flush. I have.
Thus, for example, when the headrest body is used for the rear seat, the headrest body when in the storage position does not hinder the rear view from the front seat, and even when the seatback of the rear seat is tilted forward. And interference with the front seat can be eliminated. The most important point is that when the headrest body is in the use position, the front component and the front surface of the seatback are almost flush with each other, so that there is no step between the seatback and the headrest body, and comfort is improved. improves.
[0006]
According to a second aspect of the present invention, there is provided the headrest of the seat according to the first aspect, wherein the headrest body is rotatable with respect to the stay such that a front component thereof moves in the front-back direction of the seatback. Is configured.
Therefore, only by rotating the headrest main body with respect to the stay, the headrest main body can correspond to the respective postures at the storage position or the use position.
[0007]
According to a third aspect of the present invention, there is provided the headrest for the seat according to the second aspect, wherein the stay and the frame in the headrest main body are coupled so as to be able to rotate within a predetermined angle range, and the frame comprises: The front part of the headrest body is urged to always move in the rear direction of the seat back.
With this bias, especially when operating the headrest body from the storage position to the use position, simply pulling the stay upward from the inside of the seatback will cause the front components of the headrest body to change from the state where they overlap the front surface of the seatback. It automatically changes to a flush state.
[0008]
According to a fourth aspect of the present invention, there is provided the headrest of the seat according to the first aspect, wherein a recessed portion is provided in an upper portion of the seatback, and a top surface configuration of the headrest body when the headrest body is in a storage position. When the headrest main body is in the use position, the lower part of the front component is fitted into the depression.
As a result, the headrest body in the storage position hardly protrudes from the upper portion of the seatback, and when the headrest body is in the use position, the recessed portion of the seatback is hidden by the front component to maintain the appearance. it can.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is an external perspective view showing a vehicle seat. FIG. 2 is a side view showing the vehicle seat in a partial cross section. The seat is constituted by a seat cushion 10 and a seat back 12, and the seat back 12 includes a headrest (headrest main body 14). The headrest main body 14 can be moved up and down to a use position indicated by a solid line in the drawing or a storage position indicated by a virtual line.
[0010]
When the headrest main body 14 is in the storage position, a part thereof (a front component 14 </ b> B described later) overlaps the front surface 12 a of the seat back 12. In the center of the upper portion 12b of the seat back 12, there is a recess 12c having substantially the same size as the width of the headrest body 14. A part of the headrest main body 14 at the storage position (a top surface constituting portion 14A described later) fits into the recess 12c, so that the headrest main body 14 does not protrude from the upper portion 12b of the seat back 12.
[0011]
FIG. 3 is an enlarged sectional view showing only the headrest. FIG. 4 is a perspective view showing the internal structure of the headrest. As is clear from these drawings, the headrest main body 14 is integrally formed by a headrest pad 15. The headrest pad 15 is formed by foaming a urethane resin or the like in a mold. The headrest body 14 is composed of a top component 14A that constitutes the upper part thereof, and a front component 14B that extends downward substantially perpendicularly from the front side of the top component 14A.
[0012]
As is clear from FIG. 2, the headrest main body 14 is supported by the headrest stay 24 so as to be adjustable in height with respect to the seatback 12. That is, when the headrest main body 14 is in the use position shown by the solid line in FIGS. 1 and 2, the stay 24 is pulled out upward from the recess 12c in the seat back 12, and the vertical position of the headrest main body 14 is adjusted by the amount of pullout. Is done. When the headrest body 14 is in the storage position indicated by the imaginary line in FIGS. 1 and 2, the stay 24 is pushed into the seat back 12 from the recess 12 c.
[0013]
A headrest frame 16 separate from the headrest stay 24 is located inside the headrest main body 14 (the front component 14B). The frame 16 and the stay 24 are rotatably connected by individual brackets 18 and 26. Therefore, a connection structure between the frame 16 and the stay 24 will be described.
[0014]
FIG. 5 is a perspective view of a state where the headrest frame 16 and the headrest stay 24 are separated. As is clear from FIGS. 3 to 5, the headrest frame 16 is formed by forming a pipe material into a rectangular frame shape, and a bracket 18 is fixed to the upper center thereof. The bracket 18 has a shape in which a pair of plate pieces project from both sides of a portion fixed (welded) to the frame 16. On both sides of the bracket 18, a shaft support portion 18a which is opened downward is formed. Both sides of the open portion of the both shaft supports 18a are end faces 18b and 18c which are received by stoppers 26b and 26c of the bracket 26 described below.
[0015]
The headrest stay 24 is formed by forming a pipe material into a gate shape, and a bracket 26 is fixed to an upper center thereof. The bracket 26 has a rectangular frame shape as a whole, and a portion corresponding to one side of the frame is fixed (welded) to the stay 24. On both sides of the bracket 26, shaft support portions 26a opened downward are formed, respectively. Further, the bracket 26 is provided with stoppers 26b and 26c for receiving the end surfaces 18b and 18c of the bracket 18 at corresponding positions across the shaft support 26a.
[0016]
The support shaft 20 for rotatably connecting the brackets 18 and 26 has a shape having a small-diameter portion 20b at both ends of a large-diameter portion 20a. A coiled torsion spring 22 is mounted on the axis of the large diameter portion 20a. The small diameter portion 20b is set to have an outer diameter that allows the small diameter portion 20b to enter the shaft support portions 18a, 26a of the brackets 18, 26. Note that both end portions 22a and 22b of the torsion spring 22 extend outward of the coil.
[0017]
The two brackets 18 and 26 are assembled with the bracket 18 inside and the shaft supports 18a and 26a aligned. The small-diameter portion 20b of the support shaft 20, to which the torsion spring 22 is attached, is inserted into the shaft supporting portions 18a, 26a from the open side (lower side) of the shaft supporting portions 18a, 26a. 22b are individually engaged with the upper surfaces of the brackets 18, 26.
[0018]
Thus, the brackets 18 and 26 are coupled so as to be rotatable around the axis of the support shaft 20, and a biasing force in the rotational direction is exerted between the brackets 18 and 26 by the torsion spring 22. . When this urging force is acting, one end surface 18b of the bracket 18 is in contact with and received by the stopper 26b of the bracket 26, as shown by the solid line in FIG. As a result, the other end face 18c of the bracket 18 is separated from the stopper 26c of the bracket 26. That is, the torsion spring 22 urges the headrest body 14 in the counterclockwise direction in FIG.
[0019]
In such a configuration, when the headrest main body 14 is in the storage position as shown by the phantom lines in FIGS. 1 and 2, the top surface constituting portion 14 </ b> A fits into the recess 12 c of the seat back 12. The front component 14B is superposed on the front surface 12a of the seat back 12. When the headrest body 14 is in the storage position, the end face 18c of the bracket 18 is received by the stopper 26c of the bracket 26, as is apparent from the phantom line in FIG.
[0020]
The headrest body 14 at the storage position is located at the same height as the upper portion 12b of the seat back 12. Therefore, the headrest main body 14 does not hinder the rear view from the front seat, and the interference of the headrest main body 14 with the front seat when the seat back 12 is tilted forward is also eliminated.
[0021]
When the headrest main body 14 is in the use position as shown by the solid line in FIGS. 1 and 2, the front component 14 </ b> B separates from the front surface 12 a of the seat back 12. For this reason, the headrest body 14 rotates from the state shown by the imaginary line in FIG. 3 to the state shown by the solid line by the urging force of the torsion spring 22. The rotation position at this time is regulated by the end face 18 b of the bracket 18 being received by the stopper 26 b of the bracket 26.
[0022]
In the headrest body 14 at the use position, the front component 14 </ b> B is substantially flush with the front surface 12 a of the seat back 12 due to the rotation by the urging force of the torsion spring 22. At this time, the lower part of the front component 14B enters the recess 12c of the seat back 12 without any gaps in the vertical and horizontal directions. Therefore, there is no step between the seat back 12 and the headrest body 14, and the sitting comfort is improved. Further, even when the headrest main body 14 is in the use position, the recess 12c is concealed by the front surface configuration portion 14B, so that the external appearance is kept good.
[0023]
This type of seat is small in size to achieve weight reduction and low cost, and the height of the seat back 12 is also kept low. However, when the headrest main body 14 is operated to the use position, the lower front surface 12a of the seat back 12 is supplemented by the front surface component 14B of the head rest main body 14 that follows the lower front surface 12a, and the height of the seat back 12 is reduced. You can get a comfortable sitting.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a vehicle seat. FIG. 2 is a side view showing a vehicle seat in a partial cross section. FIG. 3 is a cross sectional view showing only a headrest in an enlarged manner. FIG. FIG. 5 is a perspective view showing the structure. FIG. 5 is a perspective view showing a state where a headrest frame and a headrest stay are separated.
12 Seat back 12a Front surface 12b Upper part 12c Depressed part 14 Headrest main body 14A Top surface constituent part 14B Front constituent part 16 Frame (headrest frame)
24 Stay (Headrest Stay)

Claims (4)

A headrest main body, a headrest of a seat configured by a top component having a stay at a lower portion, and a front component extending downward from the top component on the front side of the stay,
When the headrest body is in the storage position where the stay is pushed into the seatback, the front component overlaps the front surface of the seatback, and the headrest body moves the stay upward from inside the seatback. A headrest for the seat, wherein the front configuration portion and the front surface of the seatback are substantially flush when in a use position where the seatback is pulled out. A headrest for the seat according to claim 1,
The headrest body is a seat headrest that is configured to be rotatable with respect to a stay such that a front component moves in the front-back direction of the seatback. It is a headrest of a seat according to claim 2,
The stay and the frame in the headrest main body are coupled so as to be rotatable within a predetermined angle range, and the frame is urged to always move the front component of the headrest main body in the rear direction of the seat back. Seat headrest. A headrest for the seat according to claim 1,
A recess is provided in the upper part of the seat back, and when the headrest body is in the storage position, the top surface component fits into the recess, and when the headrest body is in the use position, the front component. A seat headrest in which a lower portion of the seat fits into the recess.

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