Vehicle headrest and vehicle seat

Abstract

To provide a headrest and a seat that the headrest can be prevented from interfering with a seat cushion when a seat back is folded forward, with a simple structure.SOLUTION: A center headrest 10 includes: a headrest stay 12; and a headrest pad 13 disposed on a one-end side of the headrest stay 12. Another-end side of the headrest stay 12 is supported so as to be slidable in a vertical direction with respect to a seat back 4. The length of the headrest stay 12 is set such that when the headrest 10 is disposed at the lowermost position and the seat back 4 is folded forward, the headrest pad 13 abuts against a seat cushion 5 and consequently stops moving, and when the headrest 10 is disposed at the uppermost position and the seat back 4 is folded forward, the seat back 4 abuts against the seat cushion 5 and consequently stops moving.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a headrest for a vehicle and a vehicle seat. [Background technology]

[0002] Conventionally, some vehicle seats have a seat back that can be folded forward and overlapped with the seat cushion. In such vehicle seats, if the headrest interferes with the seat cushion when the seat back is folded forward, it is difficult to position the back of the seat back nearly horizontal, causing the floor surface on which luggage is placed to tilt, resulting in poor luggage carrying capacity. To address this issue, the vehicle seat described in Patent Document 1 employs a headrest mounting structure that allows the headrest to be moved toward the back of the seat back while tilted forward. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6377986 Summary of the Invention [Problem to be solved by the invention]

[0004] The vehicle seat described in Patent Document 1 requires a complex headrest mounting structure to allow the headrest to be moved toward the back of the seatback when folded forward. Specifically, the headrest mounting structure includes a slide recess formed on the side of the headrest stay, a support bracket that supports the headrest stay, an engagement / disengagement pin provided on the support bracket, and a slit through which the support bracket passes. Therefore, there has been a need for a headrest and a vehicle seat with a simple structure that can prevent the headrest from interfering with the seat cushion when the seatback is folded forward.

[0005] In view of such demands, an object of the present invention is to provide a vehicle headrest and a vehicle seat that have a simple structure and can prevent the headrest from interfering with the seat cushion when the seat back is folded forward. [Means for solving the problem]

[0006] A first aspect of the present invention is a vehicle headrest that is attached to a vehicle seat in which the seat back can be folded forward so as to be overlapped on the seat cushion, and that includes a headrest stay that forms a framework, and a cushion body that is disposed on one end side of the headrest stay, and when the seat back is in an upright position relative to the seat cushion, the other end side of the headrest stay is supported so as to be able to slide vertically relative to the seat back, and the length of the headrest stay is set so that when the headrest is positioned at the lowest position and the seat back is folded forward, the cushion body abuts against the seat cushion to stop movement, and when the headrest is positioned at the highest position and the seat back is folded forward, the seat back abuts against the seat cushion to stop movement.

[0007] According to the first aspect of the present invention, when the seat back is folded forward and overlapped on the seat cushion, interference between the vehicle headrest and the seat cushion can be prevented with a simple structure in which the length of the headrest stays is set to an appropriate value. Specifically, the length of the headrest stays is set so that when the seat back is folded forward with the vehicle headrest in the lowest position in a state in which the seat back is upright relative to the seat cushion, the cushion body of the vehicle headrest abuts against the seat cushion and movement is stopped, and when the vehicle headrest is in the highest position and the seat back is folded forward, the seat back abuts against the seat cushion and movement is stopped.

[0008] The second invention of the present invention is a vehicle seat equipped with the vehicle headrest of the first invention, wherein the vehicle seat is a 6-sided seat that is a rear seat of an automobile and can accommodate two people in a 6:4 split type seat, and the 6-sided seat is characterized in that the upper surface of the seat cushion of the center seat on the center side is formed to be higher than the upper surfaces of the seat cushions of the side seats on the side sides, and the vehicle headrest is attached to the center seat.

[0009] According to the second invention, the vehicle headrest is arranged on a center seat where the upper surface of the seat cushion is raised upward above the upper surfaces of the side seats, thereby effectively preventing the seat back from tilting too much when the cushion body interferes with the seat cushion. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of a rear seat for an automobile to which a headrest according to an embodiment of the present invention is attached, as viewed obliquely from the front. [Figure 2] 2 is a cross-sectional view taken along the line II-II of FIG. 1, showing the seat back in an upright position. [Figure 3] In the cross section of FIG. 2, the seat back is in an upright position, the headrest is in the lowest position, and the seat back is folded down. [Figure 4] In the cross section of FIG. 2, the seat back is in an upright position, the headrest is in the uppermost position, and the seat back is folded down. [Figure 5] This is a cross-sectional view taken along the line VV of Figure 1. The cushion frame is omitted. [Figure 6] FIG. 2 is a front view of the headrest of the embodiment. [Figure 7] FIG. 2 is a side view of the headrest of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] 1 to 7 show one embodiment of the present invention. This embodiment is an example in which the present invention is applied to a six-side seat 2 of an automobile rear seat 1 having a six-side seat 2 and a four-side seat 3. In each figure, arrows indicate the directions when the automobile rear seat 1 is installed in the automobile. In the following description, descriptions regarding directions will be made based on these directions. The left-right direction corresponds to the seat width direction.

[0012] As shown in Figure 1, the automobile rear seat 1 is a seat at the rear of the automobile and has a 6:4 split type seat 2 on one side that can accommodate two people, and a 4:4 split type seat 3 on the left side that can accommodate one person. Here, the 6:4 split seat 2 corresponds to the "vehicle seat" in the claims.

[0013] As shown in FIG. 1, the sixth-side seat 2 has a center seat C for a center-side seated occupant and a side seat S for a side-side seated occupant, arranged side by side in the left-right direction. The seat back 4 has a center back portion 6 for the center-side seated occupant and a side back portion 7 for the side-side seated occupant. The seat cushion 5 has a center cushion portion 8 for the center-side seated occupant and a side cushion portion 9 for the side-side seated occupant. The seat cushion 5 is formed integrally with the seat cushion of the fourth-side seat 3, which is formed in the same shape as the side cushion portions 9. As clearly shown in FIG. 5, the upper surface of the center cushion portion 8, which serves as the seating surface, is formed higher than the upper surfaces of the side cushion portions 9, which serve as the seating surfaces. A center headrest 10 is attached to the top of the center back portion 6, and side headrests 11 are attached to the top of the side back portions 7. Here, the center headrest 10 corresponds to the "headrest" in the claims.

[0014] As shown in Figures 1 and 2, the seat back 4 is formed by covering a back pad 4a, which is a cushion material placed on a back frame (not shown) forming the skeleton, with a back cover 4b, which is a skin material, from the front and rear. The back pad 4a forms the outer shape of the seat back 4, and the back cover 4b is formed by sewing multiple pieces together to form a three-dimensional shape. The seat cushion 5 is formed by covering a cushion pad 5a, which is a cushion material placed on a cushion frame (not shown) forming the skeleton, with a cushion cover 5b, which is a skin material, from above. The cushion pad 5a forms the outer shape of the seat cushion 5, and the cushion cover 5b is formed by sewing multiple pieces together to form a three-dimensional shape.

[0015] As shown in Figures 6 and 7, the center headrest 10 includes a headrest stay 12 forming a framework, a headrest pad 13 (cushion material) attached to the upper end of the headrest stay 12, and a headrest cover 14 (covering material) covering the headrest pad 13. The headrest stay 12 includes a pair of vertical rods 12a (left and right) extending parallel to each other vertically at the lower end, and a connecting portion 12b connecting the upper ends of the pair of vertical rods 12a. When viewed from the side, the connecting portion 12b extends upward from the upper ends of the pair of vertical rods 12a, gradually curving forward, and then extending downward and forward from its top. When viewed from above, the connecting portion 12b has a generally U-shape that opens rearward. The connecting portion 12b is insert-molded into the headrest pad 13, thereby integrating the headrest stay 12 and the headrest pad 13. The headrest pad 13 has a generally crescent-shaped cross section and a saddle-like shape extending in the left-right direction. A notch 12c is formed in the left surface of the right headrest stay 12. As shown in FIG. 2, the center headrest 10 is attached to the center back portion 6 of the seat back 4 so that the vertical rods 12a are inserted into a pair of left and right headrest supports (not shown) attached to the upper part of the center back portion 6 of the seat back 4, thereby allowing the center headrest 10 to move up and down relative to the center back portion 6 of the seat back 4. When the center headrest 10 is in the lowest position, it abuts against the upper part of the center back portion 6 of the seat back 4, preventing downward movement. When the center headrest 10 is in the highest position, a locking plate disposed on the upper part of the headrest support engages with the notch 12c, preventing the center headrest 10 from moving up and down relative to the center back portion 6 of the seat back 4. The headrest pad 13 corresponds to the "cushion body" in the claims. Moreover, the upper end side and the lower end side of the headrest stay 12 correspond to the "one end side" and the "other end side" in the claims, respectively.

[0016] As shown in Figures 2 to 4, the seat 2 on the side 6 is attached so that the seat back 4 can rotate in the front-rear direction around a rotation shaft 15 extending in the left-right direction relative to the seat cushion 5. The seat back 4 can be in an upright position as shown in Figure 2, in which it is substantially perpendicular to the seat cushion 5 and extends in the up-down direction, and in a reclined position as shown in Figures 3 and 4, in which it is overlapped with the seat cushion 5 and extends in the front-rear direction. When the seat back 4 is in the upright position, an occupant can sit on it, and when the seat back 4 is in the reclined position, the back surface 4c of the seat back 4 can be used as the floor of the luggage compartment.

[0017] As shown in Fig. 2, when a center-side seated occupant sits on the center seat C with the seatback 4 in the upright position, the center headrest 10 may be in the lowest position or in the highest position and locked. When the seatback 4 is in the reclined position with the center headrest 10 in the lowest position shown in Fig. 2, the headrest pad 13 covered with the headrest cover 14 of the center headrest 10 comes into contact with the upper surface of the center cushion portion 8 of the seat cushion 5, as shown in Fig. 3, and rotation is stopped. In this state, the back surface 4c of the seatback 4 is tilted and not approximately horizontal, making it difficult to use as a floor for the luggage compartment. On the other hand, when the seatback 4 is in the reclined position with the center headrest 10 in the highest position, the center back portion 6 of the seatback 4 comes into contact with the upper surface of the center cushion portion 8 of the seat cushion 5, as shown in Fig. 4, and rotation is stopped. At this time, the headrest pad 13 covered with the headrest cover 14 of the center headrest 10 does not come into contact with the upper surface of the center cushion portion 8 of the seat cushion 5. In this state, the back surface 4c of the seatback 4 is substantially horizontal, making it easy to use as the floor of the luggage compartment. Note that at this time, the upper surfaces of the side cushion portions 9, which are the seating surfaces, are not raised above the upper surface of the center cushion portion 8, so the side headrests 11 do not come into contact with the upper surfaces of the side cushion portions 9.

[0018] The present embodiment configured as described above has the following advantageous effects. Because the headrest stays 12 of the center headrest 10 are set to an appropriate length, when the seat back 4 is folded forward with the center headrest 10 in the lowest position and the seat back 4 in an upright position relative to the seat cushion 5, the headrest pad 13 covered with the headrest cover 14 abuts against the seat cushion 5 and is stopped from moving, and when the seat back 4 is folded forward with the center headrest 10 in the highest position, the seat back 4 abuts against the seat cushion 5 and is stopped from moving. Thus, with a simple structure in which the length of the headrest stays 12 is set to an appropriate length, it is possible to prevent the center headrest 10 from interfering with the seat cushion 5 and the back surface 4c of the seat back 4 from being in a substantially horizontal position when the seat back 4 is folded forward and overlapped with the seat cushion 5.

[0019] The center headrest 10 is attached to the center back portion 6 of the center seat C, and the upper surface of the center cushion portion 8, which is the seating surface, is raised upward from the upper surfaces of the side cushion portions 9, which are the seating surfaces. This effectively prevents the headrest pad 13 covered with the headrest cover 14 from coming into contact with the seat cushion 5, which tends to cause the seat back 4 to tilt too much.

[0020] Although specific embodiments have been described above, the present invention is not limited to those external appearances and configurations, and various modifications, additions, and deletions are possible within the scope of the present invention. For example, the following can be mentioned.

[0021] 1. In the above embodiment, the present invention is applied to the center headrest 10 of the sixth seat 2, but it is not limited to this, and may also be applied to the side headrest 11 of the sixth seat 2 or to the headrest of the fourth seat 3. Furthermore, it may also be applied to the headrest of a front seat.

[0022] 2. In the above embodiment, the notch 12c of the headrest stay 12 is provided only at the uppermost position of the center headrest 10. However, this is not limiting, and multiple notches may be provided and locked to allow height adjustment of the center headrest 10 relative to the center back portion 6.

[0023] 3. In the above embodiment, the present invention is applied to the rear seat 1 for an automobile, but is not limited to this and may also be applied to seats mounted on trains and the like. [Explanation of symbols]

[0024] 1. Rear seats for automobiles 2 6-side seat (vehicle seat) 3 4 side seats 4 seat backs 4a Back Pad 4b Back cover 4c Back part 5 seat cushions 6 Center back section 8 Center cushion section 10 Center headrest (headrest) 12 Headrest stay 12a Vertical bar section 12b Connection part 13 Headrest pad (cushion body) 14 Headrest cover 15 Rotation axis C Center seat S side seat

Claims

1. The vehicle headrest is a headrest that is attached to a vehicle seat in which the seat back can be folded forward and overlapped with the seat cushion, The headrest includes a headrest stay forming a framework, and a cushion body disposed on one end side of the headrest stay. When the seat back is in an upright position relative to the seat cushion, the other end of the headrest stay is supported so as to be slidable in the up-and-down direction relative to the seat back, The length of the headrest stay is set so that when the headrest is placed at the lowest position and the seat back is folded forward, the cushion body comes into contact with the seat cushion to stop movement, and when the headrest is placed at the highest position and the seat back is folded forward, the seat back comes into contact with the seat cushion to stop movement.

2. A vehicle seat to which the vehicle headrest according to claim 1 is attached, The vehicle seat is a rear seat of an automobile, and is a 6:4 split type seat that can seat two people on a 6-sided side, The sixth seat is formed such that the upper surface of the seat cushion of the center seat on the center side is raised upwards relative to the upper surfaces of the seat cushions of the side seats on the side sides, The vehicle headrest is attached to the center seat.

Images