JPS62519Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headrest mounting structure for a seat, and particularly to a headrest mounting structure for a vehicle seat that can be folded backwards into a bed.

Conventionally, when folding back the seat back to convert it into a bed, the head rest that protrudes from the top of the back interferes with the rear seat, so it is necessary to remove the head rest. It was necessary to install a headrest, and it was a hassle to insert and remove the headrest.

Therefore, the present invention has developed a sheet 1 as shown in Fig. 1.
The above problem is solved by making the headrest 3 attached to the upper end of the backrest part 2 by a stay 4 rotatable.

Below, the details of the stay mounting structure of this invention are explained in the second section.
This will be explained with reference to the embodiments shown in FIGS. 7 to 7.

As shown in FIG. 3, the ends of the pair of stays 4, 4 provided on the headrest 3 are bent into an L shape to form hooks 41, 41, and the bent ends are located on the same line. There is.

On the other hand, the headrest supports 5a and 5b have almost the same structure, and to explain the support 5a, as shown in FIGS. It consists of a cylindrical stay guide part 52 that is formed and protrudes in the vertical direction. As shown in FIG. 2, this stay guide portion 52 is inserted into the interior from the upper surface of the seat back portion 2 and is fixed by a bracket 7 fixed to the seat frame 6. Further, the stay guide portion 52 is provided with a notch 53 on the outer side surface thereof having a width that allows the hook portion 41 of the stay 4 to be inserted in the vertical direction.

The head 51 has an elongated hole 511 long enough to allow the hook 41 to be inserted therethrough. One end of the elongated hole 511 is located approximately in the center of the head 51 and communicates with the cylindrical stay guide portion 52, and the other end extends toward the outside of the head 51. Also, the head 51 has a hook portion 4 of the stay 4.
An engaging portion 54 that engages with 1 is formed. This engaging portion 54 has a substantially inverted U-shaped cross section and covers the outer half of the elongated hole 511, and has an engaging surface 55 with a semicircular cross section that rotatably engages with the hook portion 41 of the stay 4. There is. Further, the hook portion 41 is attached to the engagement surface 5 of the head 51.
A groove 56 is provided to support the stay 4 in a position parallel to the head 51 when the seat rotates in the rearward direction.

As shown in FIGS. 5 and 7, in the other headrest support 5b, the engaging portion 51 is provided outside the stay guide portion 52, and this cylindrical stay guide portion 52 is provided outside the stay guide portion 52. A vertical notch 53 is formed in the. The headrest support 5b is equipped with a well-known stopper mechanism 8 for holding the stay 4 at a predetermined height.

In the headrest mounting structure configured as described above, when inserting the stays 4, 4 into the headrest supports 5a, 5b, both stays 4,
By elastically bending the hooks 4 in opposite directions so as to sandwich the gap between them, and then restoring them, the hook portions 4
1 and 41 respectively, the headrest support 5a,
5b along the engaging surface 55. When pushed further downward, the stays 4, 4 are guided by the stay guide portions 52, 52 of the headrest supports 5a, 5b, respectively, and the headrest is pushed downward, and is held at an appropriate height by the stopper mechanism 8. In addition, when moving the stay, the hook part 4
1, 41 are notches 53, 5 of the guide parts 52, 52
Move under the guidance of 3.

Next, when the seat backrest portion 2 is tilted back to form a bed, the headrest 3 is pulled out until the hook portions 41, 41 of the stays 4, 4 abut the engaging portions 54, 54 of the supports 5a, 5b, respectively. When the headrest is tilted backward using the hooks 41, 41 as rotation axes, the hooks 41, 41 are rotated by the engagement surfaces of the engagement parts 54, 54, and the stays 4, 4 are moved into the grooves of the headrest supports 5a, 5b, respectively. 56, 56 in a fitted state. In this state, if the seat backrest part 2 is tilted back as shown in Fig. 1,
The headrest 3 can be turned into a bed without interfering with the rear seat or the rear end of the vehicle compartment. When the backrest 2 is to be used normally, the backrest 2 is erected with the headrest 3 folded down, and then the headrest 3 is erected and then pushed down into the backrest 2 and held at a desired height by the stopper mechanism 8. urge Note that the headrest can be removed using the same operation as when inserting it.

As described above, the headrest mounting structure of the present invention eliminates the trouble of inserting and removing the headrest each time when converting the seat into a bed, which is extremely convenient. There is no need to provide a seat on the back of the seat, which has the practical effect of increasing the space inside the vehicle.

[Brief explanation of the drawing]

Figure 1 is a side view when the backrest of the vehicle seat is tilted back to form a bed, Figure 2 is a side view of the upper part of the backrest, Figure 3 is a front view of the upper part of the backrest, and Figures 4 and 5 are Each is a perspective view of the headrest support provided at the upper part of the backrest, FIG. 6 is a sectional view taken along the line - - in FIG. 4, and FIG. 7 is a - line sectional view in FIG. 5.
FIG. 2... Seat backrest portion, 3... Head rest, 4... Stay, 41... Hook portion, 5a, 5b...
...Head rest support, 54...Stay engaging portion 56...Groove portion.

Claims (1)

[Scope of utility model registration request] A headrest mounting structure for a seat comprising a pair of stays arranged parallel to each other on the headrest, and a pair of headrest supports having a head portion fixed to the upper surface of the backrest of the seat and a stay guide portion inserted inward from the upper surface of the backrest, characterized in that the tips of the two stays are bent into an L shape to form a hook portion with both bent portions on the same line, while the head of each headrest support is formed with a stay engagement portion having a surface that prevents the hook portion of the stay from coming out when the stay inserted into the stay guide portion is lifted and rotatably supports the hook portion, and a groove portion is formed to support the stay when the hook portion rotates within a predetermined range.