Headrest

Abstract

To obtain a headrest which can inhibit displacement of a headrest skin even in a structure in which the upper surface side and the upper rear side of a headrest case are not covered with a headrest pad.SOLUTION: A headrest pad 30 is attached to a headrest case 20 in a state that the upper side and the rear side of an upper part 30U are open. A trim cover serving as a headrest skin is attached so as to cover the headrest pad 30 and an exposed portion of the headrest case 20 from the headrest pad 30. Restriction parts 42, 44 are provided at adjacent portions of the headrest case 20 and the headrest pad 30. The restriction parts 42, 44 are fitted through recessed and protruding parts to restrict relative displacement between the headrest case 20 and the headrest pad 30.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a headrest.

Background Art

[0002] The following Patent Document 1 discloses a technique related to a headrest in which a headrest body is attached to the upper part of a stay (headrest stay). In this prior art, the headrest body includes a pad member (headrest pad) covered with a pad cover (headrest skin), and inside the pad member, an inner case (headrest case) that is rotatable around a horizontal lateral axis at the upper end of the stay is arranged.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the above prior art, the upper surface side of the inner case is covered with the pad member, but in recent years, there are cases where the upper surface side and the upper rear side of the inner case are not covered with the pad member. In such a case, since the relative position between the inner case and the pad member is not stable, there is a concern that the pad cover may shift, and there is room for improvement in this regard.

[0005] In consideration of the above facts, an object of the present invention is to obtain a headrest that can suppress the shift of the headrest skin even in a configuration where the upper surface side and the upper rear side of the headrest case are not covered with the headrest pad.

Means for Solving the Problems

[0006] The headrest of the present invention as described in claim 1 comprises: a headrest stay connected to the upper end of a seat back; a headrest case rotatably provided at the upper end of the headrest stay around an axis in the width direction of the headrest; a headrest pad placed over the headrest case with the upper and upper rear sides open; a headrest surface covering the headrest pad and the exposed portion of the headrest case from the headrest pad; and regulating parts provided on adjacent parts of the headrest case and the headrest pad, which restrict relative displacement between the headrest case and the headrest pad by interlocking grooves and protrusions.

[0007] According to the above configuration, a headrest stay is connected to the upper end of the seat back, and a headrest case provided at the upper end of the headrest stay is rotatable around an axis in the width direction of the headrest. The headrest pad is placed over the headrest case with the upper and upper rear sides open, and the headrest surface is placed over the headrest pad and the exposed portion of the headrest case from the headrest pad. Here, restricting portions are provided at the adjacent parts of the headrest case and the headrest pad, and these restricting portions restrict the relative displacement between the headrest case and the headrest pad by interlocking grooves and protrusions. This makes it possible to suppress the displacement of the headrest surface caused by the relative displacement between the headrest case and the headrest pad.

[0008] The headrest of the present invention as described in claim 2 has the configuration described in claim 1, wherein the restricting portion is provided on the upper and lower sides on both sides in the width direction of the headrest, above the adjacent portions of the headrest case and the headrest pad.

[0009] With the above configuration, the provision of restricting sections on the left and right sides effectively suppresses the relative displacement between the headrest case and the headrest pad in the front-to-back direction. Furthermore, the provision of restricting sections on the top and bottom effectively suppresses the relative displacement between the headrest case and the headrest pad in the vertical direction.

[0010] The headrest of the present invention as described in claim 3, in the configuration described in claim 1, wherein the headrest case is configured such that an upper case constituting the upper part of the case and a lower case constituting the lower part of the case are fastened together with screws, and has a recess in which the head of the screw is housed, and the recess also serves as a component of the restricting part.

[0011] According to the above configuration, the recess in which the screw head is housed can be effectively utilized as a component of the restricting part.

[0012] The headrest of the present invention as described in claim 4, in the configuration described in claim 1, wherein the headrest case has a pair of downwardly extending portions extending downward from both sides in the width direction of the headrest, the pair of downwardly extending portions are formed in a tapered shape toward the downward direction when viewed from the side, and the headrest pad has a sheath-like lower covering portion that extends downward from both sides in the width direction of the headrest and covers the pair of downwardly extending portions.

[0013] With the above configuration, the relative displacement between the pair of downward extensions of the headrest case and the sheath-like lower covering portion of the headrest pad is suppressed, and the downward extensions are reinforced by the lower covering portion, thereby providing good support to the occipital bone of the seated occupant from both sides. [Effects of the Invention]

[0014] As described above, the headrest of the present invention has the excellent effect of suppressing slippage of the headrest surface even when the upper and upper rear sides of the headrest case are not covered by the headrest pad. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing a headrest according to one embodiment of the present invention. Figure 1(A) shows the state before tilting. Figure 1(B) shows the state after tilting. [Figure 2] This is a perspective view showing the headrest before the trim cover is installed. [Figure 3] This is an exploded perspective view showing the structure with the headrest case attached to the headrest stay and the headrest pad disassembled. [Figure 4] This is an exploded side view showing the structure in which the headrest case is attached to the headrest stay and the headrest pad, disassembled and viewed from the side. [Figure 5] This is a simplified side view showing the same state as in Figure 2. [Figure 6] This is a cross-sectional view showing the state after cutting along line 6-6 in Figure 5. [Figure 7] Figure 7(A) is a rear view showing the process of attaching the trim cover to the headrest pad, etc. Figure 7(B) is a rear view showing the state after the trim cover has been attached to the headrest pad, etc. [Modes for carrying out the invention]

[0016] The headrest 10 according to one embodiment of the present invention will be described below with reference to Figures 1 to 7. In these figures, arrows FR indicate the front side of the headrest 10, arrows UP indicate the upper side of the headrest 10, and arrows W indicate the width direction of the headrest 10. When simply referring to the front, back, up, down, left, and right directions, unless otherwise specified, these directions refer to the direction relative to the headrest 10. In addition, some reference numerals may be omitted in each figure for the sake of clarity.

[0017] (Configuration of the embodiment) In FIGS. 1(A) and 1(B), the headrest 10 according to the present embodiment is shown in a perspective view. As shown in FIGS. 1(A) and 1(B), the headrest 10 includes a headrest stay 12 connected to the upper end of the seat back 50, and a headrest body 14 attached to the upper end of the headrest stay 12 and capable of tilting. The headrest stay 12 has a pair of left and right legs 12A protruding downward from the headrest body 14. The headrest body 14 is for supporting the head of the seated occupant. The surface of the headrest body 14 is composed of a trim cover 32 as a headrest skin.

[0018] In FIG. 2, the headrest 10 in a state before the trim cover 32 (see FIG. 1) is attached is shown in a perspective view. The headrest body 14 shown in FIG. 2 includes a headrest case 20 provided rotatably about an axis in the headrest width direction (see arrow W) at the upper end of the headrest stay 12, and a headrest pad 30 covering the headrest case 20. The headrest pad 30 is covered on the headrest case 20 with the upper side and the rear side of the upper portion 30U open. In the figure, in the headrest pad 30, reference numerals 30S are attached to the edges on both sides in the headrest width direction of the open portion, reference numeral 30F is attached to the front edge of the upper open portion, and reference numeral 30L is attached to the lower edge of the rear open portion of the upper portion 30U. The above-described trim cover 32 (see FIG. 1) is covered so as to cover the headrest pad 30 and the exposed portion of the headrest case 20 from the headrest pad 30.

[0019] In FIGS. 3 and 4, a state in which the structure 18 with the headrest case 20 attached to the headrest stay 12 and the headrest pad 30 are disassembled is shown. Further, in FIG. 5, a simplified side view of the same state as in FIG. 2 is shown, and in FIG. 6, a cross-sectional view of the state cut along line 6-6 of FIG. 5 is shown. Note that the headrest case 20 and the headrest pad 30 are formed symmetrically about the left and right as an example.

[0020] The headrest case 20 shown in FIGS. 3, 4, and 6 is made of resin and has an upper case 22 that constitutes the upper part of the case and a lower case 24 that constitutes the lower part of the case. As shown in FIG. 6, the headrest case 20 is configured by fastening the upper case 22 and the lower case 24 with screws 26. Inside the headrest case 20, a mechanism for enabling the tilt operation of the headrest body 14 is provided, but the description thereof is omitted here.

[0021] As shown in FIGS. 3, 4, and 6, on both sides in the headrest width direction at the upper part of the lower case 24, lower concave portions 24A are formed as concave portions that open downward and outward in the headrest width direction. The lower concave portions 24A are formed in a triangular shape in side view (see FIG. 4) and are provided in a pair on the left and right. The heads 26A of the screws 26 (see FIG. 6 in each case) are accommodated in the lower concave portions 24A. As shown in FIGS. 3 and 4, on both sides in the headrest width direction at the upper part of the upper case 22, upper concave portions 22A are formed as concave portions that open upward and outward in the headrest width direction. The upper concave portions 22A are formed in a parallelogram shape in side view (see FIG. 4) and are provided in a pair on the left and right. The heads of the screws (not shown, the same members as the screws 26 in FIG. 6) for fastening the upper case 22 and the lower case 24 are accommodated in the upper concave portions 22A.

[0022] Note that by forming the above-described lower concave portions 24A, the axial length of the screw 26 shown in FIG. 6 can be shortened, and it becomes possible to increase the fastening strength by the screw 26. The same can be said for the upper concave portions 22A shown in FIG. 4 and the like. Further, the lower concave portions 24A and the upper concave portions 22A have a shape considering die cutting and are inclined in the vertical direction in side view.

[0023] As shown in FIG. 3, the headrest case 20 has a pair of lower extending portions 24B that extend downward from both side portions in the headrest width direction. The pair of lower extending portions 24B are part of the lower case 24 and are formed in a tapered shape downward in side view shown in FIG. 4.

[0024] On the other hand, as shown in Figure 3, the headrest pad 30 has a front wall portion 30X positioned on the front side of the headrest in the front-rear direction at its upper part 30U, and side wall portions 30Y extending rearward from both ends of the front wall portion 30X in the headrest width direction. Also, as shown in Figure 2, the headrest pad 30 has a sheath-like lower covering portion 30A that extends downward from both sides in the headrest width direction at its lower part and covers a pair of downward extensions 24B (see Figure 3) of the headrest case 20. Furthermore, at the rear side of the headrest pad 30, the upper sides of the pair of lower covering portions 30A are connected in the headrest width direction. The pair of lower covering portions 30A of the headrest pad 30 are attached to the pair of downward extensions 24B (see Figure 3) of the headrest case 20 by fitting them from below.

[0025] As shown in Figures 2 and 3, on the left and right side walls 30Y of the upper part 30U of the headrest pad 30, an upper protrusion 30B (an element that can be grasped as a projection) is formed on the inner surface side (the side adjacent to the headrest case 20) that protrudes inward in the width direction of the headrest from its upper end, and a lower protrusion 30C (an element that can be grasped as a projection) is formed that protrudes inward in the width direction of the headrest from a part below the upper protrusion 30B. The upper protrusion 30B is provided near the rear of the left and right side walls 30Y, and the lower protrusion 30C is provided at the rear end of the left and right side walls 30Y.

[0026] As shown in Figure 2, the upper convex portion 30B of the headrest pad 30 interlocks with the upper recess 22A of the headrest case 20, and together with the upper recess 22A of the headrest case 20, forms a restricting portion 42. The lower convex portion 30C of the headrest pad 30 interlocks with the lower recess 24A of the headrest case 20, and together with the lower recess 24A, forms a restricting portion 44. The restricting portions 42 and 44 are provided on adjacent parts of the headrest case 20 and the headrest pad 30, and are configured to restrict the relative displacement between the headrest case 20 and the headrest pad 30 by interlocking.

[0027] Next, the installation of the trim cover 32 will be outlined with reference to Figure 7. Figure 7(A) shows the state of the trim cover 32 during installation in a rear view. As shown in Figure 7(A), the trim cover 32 is formed in a bag shape with an opening 32X on the rear side, and a unit 40 in which the headrest case 20 and headrest pad 30 (see Figure 2) are integrated is inserted into this trim cover 32. Note that a portion of both sides 32S on the rear side of the lower part of the trim cover 32 is folded inward after the unit 40 is inserted. A J-hook 34 is attached to the lower edge of the opening 32X of the trim cover 32. The J-hook 34 extends along the width direction of the headrest.

[0028] The upper part of the trim cover 32 has a first piece 32A, a second piece 32B, and a third piece 32C that can be hung down on the rear side. As shown in Figure 7(B), the first piece 32A is the part located to the left of the pair of legs 12A, the second piece 32B is the part located between the pair of legs 12A, and the third piece 32C is the part located to the right of the pair of legs 12A.

[0029] As shown in Figure 7(A), a claw portion 36A is attached to the tip of the first piece 32A. Similarly, a claw portion 36B is attached to the tip of the second piece 32B, and a claw portion 36C is attached to the tip of the third piece 32C. The claw portions 36A, 36B, and 36C are designed to be locked onto the J-hook 34. When the claw portions 36A, 36B, and 36C are locked onto the J-hook 34, the trim cover 32 is mounted as shown in Figure 7(B).

[0030] (Effects and mechanisms of the embodiment) Next, the operation and effects of this embodiment will be described.

[0031] In this embodiment, as shown in Figures 1(A) and 1(B), a headrest stay 12 is connected to the upper end of the seat back 50, and as shown in Figure 2, a headrest case 20 provided at the upper end of the headrest stay 12 is rotatable around an axis in the width direction of the headrest. The headrest pad 30 is placed over the headrest case 20 with the upper side and the rear side of the upper part 30U open, and a trim cover 32 (see Figure 1) is placed over the headrest pad 30 and the exposed portion of the headrest case 20 from the headrest pad 30. Here, restricting portions 42 and 44 are provided at the adjacent parts of the headrest case 20 and the headrest pad 30, and the restricting portions 42 and 44 restrict the relative displacement between the headrest case 20 and the headrest pad 30 by interlocking recesses and protrusions. Therefore, the position of the headrest pad 30 relative to the headrest case 20 is stabilized, and displacement of the trim cover 32 (see Figure 1) caused by the relative displacement between the headrest case 20 and the headrest pad 30 can be suppressed.

[0032] Furthermore, in this embodiment, the restricting portions 42 and 44 are provided on the upper and lower sides of the headrest width direction at the upper part of the adjacent portions of the headrest case 20 and the headrest pad 30. By providing the restricting portions 42 and 44 on the left and right sides, relative displacement in the front-rear direction between the headrest case 20 and the headrest pad 30 can be effectively suppressed. Also, by providing the restricting portions 42 and 44 vertically, relative displacement in the vertical direction between the headrest case 20 and the headrest pad 30 can be effectively suppressed.

[0033] Furthermore, in this embodiment, as shown in Figure 6, the headrest case 20 is constructed by fastening an upper case 22 and a lower case 24 together with screws 26, and has an upper recess 22A and a lower recess 24A that accommodate the heads 26A of the screws 26. In other words, the upper recess 22A and the lower recess 24A that accommodate the heads 26A of the screws 26 can be effectively utilized as components of the restricting parts 42 and 44.

[0034] Furthermore, in this embodiment, as shown in Figure 3, the headrest case 20 has a pair of downwardly extending portions 24B that extend downward from both sides in the width direction of the headrest, and the pair of downwardly extending portions 24B are formed in a tapered shape that points downward when viewed from the side. The headrest pad 30 also has a sheath-like lower covering portion 30A that extends downward from both sides in the width direction of the headrest and covers the pair of downwardly extending portions 24B. With these configurations, the relative displacement between the pair of downwardly extending portions 24B of the headrest case 20 and the sheath-like lower covering portion 30A of the headrest pad 30 is suppressed, and the downwardly extending portions 24B are reinforced by the lower covering portion 30A, thereby providing good support for the occipital bone of the seated occupant from both sides.

[0035] As described above, with the headrest 10 of this embodiment, even if the upper and upper rear sides of the headrest case 20 are not covered by the headrest pad 30, the displacement of the trim cover 32 (see Figure 1) can be suppressed. Furthermore, there is no need to increase the number of parts to suppress the displacement of the trim cover 32 shown in Figure 1. Since the trim cover 32 is less likely to shift, it looks good, and the operation to adjust the height of the headrest 10 can be performed stably.

[0036] (Supplementary explanation of the embodiment) Furthermore, the regulating portion, which is provided on adjacent parts of the headrest case and the headrest pad and restricts the relative displacement between the headrest case and the headrest pad by engaging in a groove-and-groove fitting mechanism, may be located in a different place than in the example of the above embodiment.

[0037] Furthermore, in the above embodiment, in the headrest case 20 shown in Figures 2 to 4 and Figure 6, the lower recess 24A and upper recess 22A, which accommodate the head 26A of the screw 26, are also used as components of the restricting parts 42 and 44. However, as a modified example, in the headrest case, the components of the restricting part may be formed in a part other than the recess that accommodates the head of the screw.

[0038] Furthermore, as a variation of the above embodiment, for example, the headrest case may be formed in a tapered shape towards the downward side when viewed from the side, but without a pair of downwardly extending portions, and the lower shape of the headrest pad may be formed to correspond to the lower shape of the headrest case.

[0039] Furthermore, the above embodiments and the various modifications described above can be combined as appropriate.

[0040] Although an example of the present invention has been described above, the present invention is not limited to the above, and it is of course possible to implement it in various ways without departing from its spirit. [Explanation of symbols]

[0041] 10 headrests 12 Headrest Stays 20 Headrest Cases 22 Upper Case 22A Upper recess (recess, component of the regulating part) 24 Lower Cases 24A Lower recess (recess, component of the regulating part) 24B Downward extension part 26 screws 26A Head 30 Headrest Pads 30A Lower covering Top of 30U headrest pad 32. Trim cover (headrest upholstery) 42 Regulatory Department 44 Regulatory Department 50 Seatback W Headrest width direction (headrest width direction)

Claims

1. The headrest stay is connected to the upper end of the seat back, A headrest case is provided at the upper end of the headrest stay so as to be rotatable around an axis in the width direction of the headrest, A headrest pad placed over the headrest case with the upper and upper rear sides open, The headrest pad and the headrest cover covering the exposed portion of the headrest case from the headrest pad, A restricting portion is provided on the adjacent parts of the headrest case and the headrest pad, which restricts the relative displacement between the headrest case and the headrest pad by fitting together with a groove and protrusion, A headrest equipped with a headrest.

2. The headrest according to claim 1, wherein the restricting portion is provided on the upper and lower sides of both sides in the width direction of the headrest, at the upper part of the adjacent portions of the headrest case and the headrest pad.

3. The headrest case is constructed by fastening an upper case, which constitutes the upper part of the case, and a lower case, which constitutes the lower part of the case, together with screws, and has a recess in which the head of the screw is housed. The headrest according to claim 1, wherein the recess is also used as a component of the regulating part.

4. The headrest case has a pair of downwardly extending portions extending downward from both sides in the width direction of the headrest, and the pair of downwardly extending portions are formed in a tapered shape that tapers downward when viewed from the side. The headrest according to claim 1, wherein the headrest pad has a sheath-like lower covering portion that extends downward from both sides in the width direction of the headrest and covers the pair of downwardly extending portions.

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