Headrest

Abstract

To provide a headrest which can inhibit displacement of pads regardless of a shape of a built-in object.SOLUTION: A headrest includes: a headrest pad 11 covering built-in objects (headrest stays 5); and a headrest cover attached to the headrest pad 11. The headrest pad 11 has: a front pad part 1 and a rear pad part 2 which are mated so as to sandwich the built-in objects (the headrest stays 5) in a front-back direction; and convexoconcave fitting parts 3 which are formed on mating surfaces of the front pad part 1 and the rear pad part 2 and fitted with each other in the front-back direction to restrict relative movement in a direction intersecting with a mating direction between the front pad part 1 and the rear pad part 2 as the front pad part 1 and the rear pad part 2 are mated.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a headrest used for vehicle seats.

Background Art

[0002] As a method for manufacturing a headrest, from the viewpoint of ease of sorting and recycling at the time of disposal, a covering method may be adopted. In the covering method, after covering the built-in objects such as a headrest stay and a resin case with a foam-molded headrest pad, a separately prepared headrest cover is put on.

[0003] For example, in Patent Document 1, a headrest is disclosed that covers the front and back surfaces of a core material (a speaker housing) as a built-in object with first and second pads divided front and back, and is further covered with a headrest cover formed by sewing together a plurality of skin materials.

[0004] In such a headrest manufactured by the covering method, the inner surfaces of the first and second pads are formed to match the outer shape of the built-in object. When putting on the headrest cover, first, the first and second pads are fitted to the built-in object and positioned. As a result, in terms of design, the portions (joint surfaces) where the pads directly contact each other are also joined without shifting. After positioning the pads with respect to the built-in object in this way, the headrest cover is put on.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, with the conventional headrests mentioned above, it can be difficult to put on the headrest cover while keeping the mating surfaces of the pads perfectly aligned. In other words, some internal components have weak contact with the pads (for example, this applies when the resin case has few bumps or grooves, or when there is no resin case at all, only the headrest stays). When putting on the headrest cover while rubbing it to avoid wrinkles over the pads that cover such internal components, the mating surfaces of the pads become misaligned. If such misalignment remains, it can create a step on the surface of the headrest, leading to a decrease in quality.

[0007] This invention was conceived in view of these points, and aims to provide a headrest that can suppress the slippage of pads regardless of the shape of the internal components. [Means for solving the problem]

[0008] As a means of solving the above problems, the headrest of the present invention takes the following measures. That is, the first invention of the present invention is a headrest having a headrest pad that covers an internal component and a headrest cover that is placed over the headrest pad, wherein the headrest pad has a front pad portion and a rear pad portion that are joined together to sandwich the internal component from front to back, and a recessed fitting portion formed on the mating surface between the front pad portion and the rear pad portion, which fits together from front to back as the front pad portion and the rear pad portion are joined together, and restricts relative movement in a direction intersecting the joining direction of the front pad portion and the rear pad portion.

[0009] According to the first invention, the headrest pads are integrated by a grooved fitting portion, and misalignment in a direction intersecting the alignment direction (front-to-back direction) of the front pad portion and the rear pad portion is restricted. In other words, even when the headrest cover is placed over the headrest pad that covers the internal components while rubbing it, the mating surfaces of the front and rear pad portions are less likely to shift, and a step is less likely to be created on the surface of the headrest. Therefore, misalignment between the front and rear pad portions can be suppressed regardless of the shape of the internal components.

[0010] The second invention of the present invention is characterized in that, in the first invention described above, the built-in component is a headrest stay comprising a pair of stay legs extending in the height direction and a stay connecting portion seamlessly connecting the pair of stay legs, and further having a concave stay fitting groove formed on the mating surface, which allows the pair of stay legs to be fitted together so as to sandwich them in the width direction.

[0011] According to the second invention, the headrest stay is fitted into the stay fitting groove, thereby integrating, for example, the rear pad portion and the headrest stay. After the rear pad portion and the headrest stay are integrated, the front pad portion and the rear pad portion are integrated by the concave and concave fitting portion. In other words, the displacement between the front and rear pad portions is suppressed, as is the displacement between the headrest stay and the front and rear pad portions, making it suitable as a headrest with only the headrest stay as an internal component.

[0012] The third invention of the present invention is characterized in that, in the first invention or the second invention, the recessed fitting portion comprises upper and lower edge fitting portions formed between the upper and lower edges of the front pad portion and the rear pad portion, and side edge fitting portions formed between the widthwise side edges of the front pad portion and the rear pad portion, wherein the upper and lower edge fitting portions restrict relative movement in the height direction between the front pad portion and the rear pad portion by fitting with contact in the height direction, and each of the side edge fitting portions restricts relative movement in the width direction between the front pad portion and the rear pad portion by fitting with contact in the width direction.

[0013] According to the third invention, when aligning the front pad portion and the rear pad portion, it is possible to visually confirm whether the interlocking parts are properly fitted together. Therefore, compared to the case where the interlocking parts are formed in the middle portion leaving the outer edge intact, the process of aligning the front pad portion and the rear pad portion can be made simpler. In addition, although the misalignment between the front and rear pad portions ultimately appears at the outer edge, the upper and lower edge fitting portions and each side edge fitting portion directly restrict the misalignment at their outer edges rather than in the middle portion, thus making it less likely for steps to form on the surface of the headrest.

[0014] The fourth invention of the present invention is characterized in that, in the first invention or the second invention, the recessed and recessed fitting portion is not formed on the outer edges of the front pad portion and the rear pad portion, but is formed in the intermediate portion that leaves the outer edges intact.

[0015] According to the fourth invention, compared to the case where a recessed and recessed fitting portion is formed on the outer edge, the boundary between the front pad portion and the rear pad portion on the outer edge can be simplified, and the impact on the appearance and feel of the headrest can be suppressed.

[0016] The fifth invention of the present invention is characterized in that, in the first invention or the second invention, the recessed and recessed fitting portion is continuously formed across the entire height region and the entire width region of the upper edge of each side edge in the width direction of the front pad portion and the rear pad portion.

[0017] According to the fifth invention, it is possible to visually confirm whether the interlocking parts are properly fitted, making the process of aligning the front pad and the rear pad easier. Furthermore, the boundary between the front pad and the rear pad at the outer edge can be simplified, which can reduce the impact on the appearance and feel of the headrest. In addition, since the force that tries to shift the front and rear pads is distributed over the entire widthwise area of ​​the upper edge and / or the entire heightwise area of ​​each side edge, the shifting between the front and rear pads is more effectively suppressed. [Brief explanation of the drawing]

[0018] [Figure 1] This is a front view of the headrest, which is an embodiment of the design. [Figure 2] This is a front view of the headrest (headrest body) before the headrest cover is placed over it. [Figure 3] Figure 2 is a perspective view of the headrest body, seen from the rear left upper right. [Figure 4] Figure 2 is a perspective view of the headrest body from the front right and lower. [Figure 5] This is a cross-sectional view taken along the line of arrow VV in Figure 2. [Figure 6] It is a cross-sectional view taken along the line VI-VI of FIG. 2. [Figure 7] It is a view of removing the front pad portion from the headrest body in FIG. 2. [Figure 8] It is an exploded perspective view of the headrest body in FIG. 2. [Figure 9] It is a view showing an intermediate convex portion according to other embodiments. [Figure 10] It is a view showing an intermediate concave portion according to other embodiments. [Figure 11] It is a view showing an inro convex portion according to other embodiments. [Figure 12] It is a view showing an inro concave portion according to other embodiments.

Mode for Carrying Out the Invention

[0019] FIGS. 1 to 8 show an embodiment of the present invention. This embodiment is an example in which the present invention is applied to the headrest 10. In FIGS. 1 to 8, the directions when the headrest 10 is attached to the seat back mounted on the automobile are shown by arrows. In the following description, the description regarding the directions shall be made based on this direction. The up-down direction and the left-right direction correspond to the "height direction" and the "width direction" of the present invention.

[0020] As shown in Figure 1, the headrest 10 includes a headrest stay 5, a headrest pad 11 that covers the headrest stay 5, and a headrest cover 12 that fits over the headrest pad 11. The headrest stay 5 includes a pair of stay legs 5a that extend vertically and horizontally, and a stay connecting portion 5b that seamlessly connects the pair of stay legs 5a (see also Figure 7). The pair of stay legs 5a have a pair of hanging portions 5x that extend vertically and a pair of inclined portions 5y that slope from the pair of hanging portions 5x to the stay connecting portion 5b. The headrest pad 11 is placed over the headrest stay 5 so as to cover the entirety of the stay connecting portion 5b, the entirety of the pair of inclined portions 5y, and the upper parts of the pair of hanging portions 5x (the parts that connect to each inclined portion 5y). The lower parts of each stay leg 5a protrude downward from the headrest pad 11.

[0021] As shown in Figures 2 to 8, the headrest pad 11 has a front pad portion 1 and a rear pad portion 2. In other words, the headrest pad 11 is made up of two parts, the front pad portion 1 and the rear pad portion 2, which are joined together in the front-to-back direction. The front pad portion 1 and the rear pad portion 2 sandwich the headrest stay 5 from the front-to-back direction. For the sake of explanation, Figures 2 to 4 show the headrest body 13 before the headrest cover 12 is placed over it.

[0022] As shown in Figures 2 to 4, the headrest pad 11 has a recessed-concave fitting portion 3. The recessed-concave fitting portion 3 includes an upper and lower edge fitting portion 3a formed between the upper and lower edges of the front pad portion 1 and the rear pad portion 2, and side edge fitting portions 3p formed between the left and right side edges of the front pad portion 1 and the rear pad portion 2. Specifically, as shown in Figures 7 and 8, the mating surfaces 1a and 2a of the front pad portion 1 and the rear pad portion 2 have upper and lower convex portions 3b, upper and lower concave portions 3c, left and right convex portions 3q, and left and right concave portions 3r formed thereon.

[0023] The upper and lower recesses 3c and the left and right recesses 3r extend to the periphery of the mating surfaces 1a and 2a of the front pad portion 1 or the rear pad portion 2. In other words, the walls of the upper and lower recesses 3c and the left and right recesses 3r continue to the outer surface of the front pad portion 1 or the rear pad portion 2. For example, as shown in Figure 8, the left recess of the left and right recesses 3r has its front surface as the bottom, and its top, bottom, and right surfaces are walls that continue to the outer surface of the front pad portion 1. The upper recess of the upper and lower recesses 3c is notched in shape due to its formation on the upper edge of the thin rear pad portion 2, and has no bottom surface, with its left, right, and bottom surfaces being walls that continue to the outer surface of the rear pad portion 2.

[0024] The upper and lower protrusions 3b and the left and right protrusions 3q are formed to fill the upper and lower recesses 3c and the left and right recesses 3r formed on the outer edge of the front pad portion 1 or the rear pad portion 2. The upper and lower protrusions 3b and the upper and lower recesses 3c are fitted together as the front pad portion 1 and the rear pad portion 2 are aligned in the front-rear direction. Similarly, the left and right protrusions 3q and the left and right recesses 3r are fitted together as the front pad portion 1 and the rear pad portion 2 are aligned in the front-rear direction. The surfaces of the upper and lower protrusions 3b and the left and right protrusions 3q that do not face or contact the respective wall surfaces of the upper and lower recesses 3c and the left and right recesses 3r become the outer surface of the headrest pad 11. The outer surface of the headrest pad 11 is a smooth surface without steps when the upper and lower protrusions 3b, upper and lower recesses 3c, left and right protrusions 3q, and left and right recesses 3r are fitted together.

[0025] Thus, the headrest pad 11 has upper and lower edge fitting portions 3a where upper and lower convex portions 3b and upper and lower recessed portions 3c are fitted together, and left and right convex portions 3q and left and right recessed portions 3r are fitted together on each side edge fitting portion 3p. The upper and lower edge fitting portions 3a are formed between the upper and lower edges of the front pad portion 1 and the rear pad portion 2. Specifically, as shown in Figure 3, the upper fitting portion of the upper and lower edge fitting portion 3a is formed at one location on the upper edge of the headrest pad 11 and is located in the middle section, leaving both ends untouched. As shown in Figure 4, the lower fitting portion of the upper and lower edge fitting portion 3a is formed at one location on the lower edge of the headrest pad 11 and is located in the middle section, leaving both ends untouched. In addition, each side edge fitting portion 3p is formed between the left and right side edges of the front pad portion 1 and the rear pad portion 2. Specifically, as shown in Figure 3, the left fitting portions of each side edge fitting portion 3p are formed at two separate locations on the left edge of the headrest pad 11 and are located in the middle section, leaving both ends untouched. As shown in Figure 4, the lower fitting portion of the upper and lower edge fitting portion 3a is formed at two separate locations on the lower edge of the headrest pad 11, and is located in the middle portion, leaving both ends untouched.

[0026] As shown in Figure 5, the upper and lower protrusions 3b (see Figure 8) and upper and lower recesses 3c (see Figure 7) fit together with contact in the vertical direction. That is, when the upper and lower protrusions 3b and upper and lower recesses 3c are fitted together, the lower surface of the upper upper and lower protrusion 3b and the lower surface of the upper upper and lower recess 3c come into contact to form a contact surface 4a, and the upper surface of the lower upper and lower protrusion 3b and the upper surface of the upper upper and lower recess 3c come into contact to form a contact surface 4b. Since the contact surfaces 4a and 4b intersect in the vertical direction, they act on the relative vertical movement of the front pad portion 1 and the rear pad portion 2.

[0027] As shown in Figure 6, the left and right protrusions 3q (see Figure 7) and left and right recesses 3r (see Figure 8) fit together with contact in the left-right direction. That is, the fitting of the left and right protrusions 3q and left and right recesses 3r causes the left surface of the right left and right protrusion 3q to come into contact with the left surface of the right left and right recess 3r to form a contact surface 4e, and the right surface of the left left and right protrusion 3q to come into contact with the right surface of the left left and right recess 3r to form a contact surface 4f. Since the contact surfaces 4e and 4f intersect in the left-right direction, they act on the relative movement of the front pad portion 1 and the rear pad portion 2 in the left-right direction.

[0028] Furthermore, the contact surfaces 4c and 4d shown in Figures 3 and 4 also intersect in the vertical direction. In other words, the left and right convex portions 3q and left and right concave portions 3r are fitted together with contact in the vertical direction as well as the horizontal direction. Similarly, the contact surfaces 4g and 4h in Figures 3 and 4 also intersect in the horizontal direction. In other words, the upper and lower convex portions 3b and upper and lower concave portions 3c are fitted together with contact in the horizontal direction as well as the vertical direction.

[0029] The formation of the upper and lower edge fitting portions 3a and the side edge fitting portions 3p restricts relative movement between the front pad portion 1 and the rear pad portion 2 in directions intersecting the alignment direction (front-back direction) and the direction (up, down, left, and right directions). In other words, even if the front pad portion 1 tries to move vertically relative to the rear pad portion 2, the front pad portion 1 and the rear pad portion 2 interfere with each other at the contact surfaces 4a to 4d (see Figures 3 to 5), thus restricting the movement. Similarly, even if the front pad portion 1 tries to move horizontally relative to the rear pad portion 2, the front pad portion 1 and the rear pad portion 2 interfere with each other at the contact surfaces 4e to 4h (see Figures 3, 4, and 6), thus restricting the movement.

[0030] Furthermore, the relative movement of the front pad portion 1 and the rear pad portion 2 is also restricted by the contact surface formed by the fitting of the stay fitting groove 6a and the stay pressing projection 6b, which will be described later. In other words, the stay fitting groove 6a and the stay pressing projection 6b are fitted together with contact in the left-right direction, restricting the relative movement of the front pad portion 1 and the rear pad portion 2 in the left-right direction. In addition, as shown in Figures 5 and 7, a support portion 6c is provided on the rear pad portion 2 to support the stay connecting portion 5b from below in order to restrict the downward movement of the headrest stay 5. The support portion 6c extends to the front edge of the stay connecting portion 5b. The relative movement of the front pad portion 1 and the rear pad portion 2 is similarly restricted by the contact surface formed by this support portion 6c.

[0031] As shown in Figure 6, the headrest pad 11 has a stay housing fitting portion 6 in addition to the recessed fitting portion 3. Specifically, as shown in Figures 7 and 8, a stay fitting groove 6a and a stay pressing projection 6b are formed on the mating surfaces 1a and 2a of the front pad portion 1 and the rear pad portion 2.

[0032] As shown in Figure 7, the stay fitting groove 6a can be fitted by sandwiching the pair of stay legs 5a from the left and right directions. The stay fitting groove 6a is formed to accommodate the entirety of the pair of inclined portions 5y and the upper parts of the pair of hanging portions 5x (the parts that connect to each inclined portion 5y). It is desirable that the width of the stay fitting groove 6a be set smaller than the diameter of the stay legs 5a so that the stay legs 5a are press-fitted into the stay fitting groove 6a. As a result, the headrest stay 5 is integrated with the rear pad portion 2 by press-fitting into the stay fitting groove 6a, and relative movement in the left-right, up-down, and front-back directions is restricted.

[0033] As shown in Figure 8, the stay pressing projection 6b is formed to be in close contact with the stay leg portion 5a, which is press-fitted all the way into the stay fitting groove 6a, and does not protrude in a way that allows it to fit completely into the stay fitting groove 6a without any gaps.

[0034] The stay fitting groove 6a and the stay pressing projection 6b engage as the front pad portion 1 and the rear pad portion 2 are joined together. In other words, as shown in Figure 6, the headrest pad 11 has a stay housing fitting portion 6 in which the stay fitting groove 6a and the stay pressing projection 6b are fitted together. As a result of the shape of the stay pressing projection 6b as described above, a space 6x is formed in the stay housing fitting portion 6 in which the stay leg portion 5a is housed. The stay leg portion 5a is in close contact with the stay fitting groove 6a and the stay pressing projection 6b, which act as walls, in the space 6x. This further restricts the relative movement of the headrest stay 5 with respect to the headrest pad 11 in the front-rear direction.

[0035] In summary, the headrest 10 according to this embodiment has the following configuration. The reference numerals in parentheses below correspond to the respective components shown in the above embodiment.

[0036] In other words, the headrest (10) is a headrest (10) having a headrest pad (11) that covers the internal components (5) and a headrest cover (12) that is placed over the headrest pad (11). The headrest pad (11) has a front pad portion (1) and a rear pad portion (2) that are joined together to sandwich the internal components (5) from the front and rear, and a recessed fitting portion (3) formed on the mating surfaces (1a, 2a) of the front pad portion (1) and the rear pad portion (2), which fit together in the front and rear directions as the front pad portion (1) and the rear pad portion (2) are joined together, and restrict relative movement in a direction intersecting the direction in which the front pad portion (1) and the rear pad portion (2) are joined.

[0037] According to the above configuration, the headrest pad (11) is integrated by the interlocking parts (3), and the misalignment of the front pad portion (1) and the rear pad portion (2) is restricted in a direction intersecting the alignment direction (front-to-back direction). In other words, even when the headrest cover (12) is placed over the headrest pad (11) that covers the internal components (5) while rubbing it, the mating surfaces (1a, 2a) of the front and rear pad portions (1, 2) are less likely to shift, and a step is less likely to form on the surface of the headrest 10. Therefore, misalignment between the pads can be suppressed regardless of the shape of the internal components (5).

[0038] Furthermore, the internal component (5) is a headrest stay (5) comprising a pair of stay legs (5a) extending in the height direction and a stay connecting portion (5b) that seamlessly connects the pair of stay legs (5a). It is further characterized by having concave stay fitting grooves (6a) formed on the mating surfaces (1a, 2a) that allow the pair of stay legs (5a) to be fitted together by sandwiching them in the width direction.

[0039] According to the above configuration, the headrest stay (5) fits into the stay fitting groove (6a), thereby integrating, for example, the rear pad portion (2) and the headrest stay (5). After the rear pad portion (2) and the headrest stay (5) are integrated, the front pad portion (1) and the rear pad portion (2) are integrated by the concave and concave fitting portion (3). In other words, the displacement between the front and rear pad portions (1, 2) is suppressed, as is the displacement between the headrest stay (5) and the front and rear pad portions (1, 2), making it suitable as a headrest (10) with only the headrest stay (5) as its internal component (5).

[0040] Furthermore, the interlocking fitting portion (3) has upper and lower edge fitting portions (3a) formed between the upper and lower edges of the front pad portion (1) and the rear pad portion (2), and side edge fitting portions (3q) formed between the respective side edges in the width direction of the front pad portion (1) and the rear pad portion (2), wherein the upper and lower edge fitting portions (3a) restrict relative movement in the height direction between the front pad portion (1) and the rear pad portion (2) through fitting with contact in the height direction, and each side edge fitting portion (3p) restricts relative movement in the width direction between the front pad portion (1) and the rear pad portion (2) through fitting with contact in the width direction.

[0041] With the above configuration, when joining the front pad portion (1) and the rear pad portion (2), it is possible to visually confirm whether the interlocking parts (3) are properly fitted together. Therefore, compared to the case where the interlocking parts (3) are formed in the middle portion that leaves the outer edge intact, the process of joining the front pad portion (1) and the rear pad portion (2) can be made simpler. In addition, although the misalignment between the front and rear pad portions (1, 2) ultimately appears at the outer edge, the upper and lower edge fitting parts (3a) and each side edge fitting part (3q) directly restrict the misalignment at their outer edges rather than in the middle portion, so it is possible to make it less likely for steps to form on the surface of the headrest 10.

[0042] Although specific embodiments have been described above, the present invention is not limited to their appearance and configuration, and various modifications, additions, and deletions are possible without altering the essence of the invention. For example, the following can be made.

[0043] 1. In the above embodiment, a headrest pad 11 completely divided into a front pad portion 1 and a rear pad portion 2 was described as an example. However, the front pad portion and the rear pad portion only need to be joined so as to sandwich the headrest stay 5 from the front and rear directions. For example, a headrest pad may be made without complete division, where a cut is made leaving a part of the outer edge intact, resulting in the front pad portion and the rear pad portion being partially connected.

[0044] 2. In the above embodiment, a headrest 10 in which the only built-in component is the headrest stay 5 was described as an example. However, regardless of this, a headrest may also have a resin case, a speaker, or the like as built-in components in addition to the headrest stay.

[0045] 3. In the above embodiment, a headrest pad 11 was described as having a stay-pressing projection 6b on the front pad portion 1 that fits into the stay-fitting groove 6a of the rear pad portion 2. However, regardless of this, the stay-pressing projection 6b on the front pad portion 1 is not required. In other words, since the stay leg portion 5a is press-fitted into the stay-fitting groove 6a, the relative movement of the headrest stay 5 with respect to the headrest pad 11 in the front-rear and left-right directions is sufficiently restricted by this alone.

[0046] 4. In the above embodiment, a headrest pad 11 in which each side edge fitting portion 3p is formed was described as an example. However, regardless of this, a headrest pad 11 in which either the upper and lower edge fitting portion 3a or each side edge fitting portion 3p is formed may also be used. Furthermore, it is arbitrary whether the recesses and protrusions are formed on the front pad portion 1 or the rear pad portion 2. For example, all the mating surfaces 1a of the front pad portion 1 may be recesses, and all the mating surfaces 2a of the rear pad portion 2 may be protrusions.

[0047] 5. In the above embodiment, a headrest pad 11 in which the interlocking parts 3 are formed on the outer edges of the front pad portion 1 and the rear pad portion 2 was described as an example. However, regardless of this, the interlocking parts may not be formed on the outer edges of the front pad portion and the rear pad portion, but rather on the intermediate portion that leaves the outer edges intact. Specifically, as shown in Figures 9 and 10, intermediate protrusions 23b and intermediate recesses 23c are formed on the mating surfaces 1a and 2a of the front pad portion 1 and the rear pad portion 2. The intermediate protrusions 23b and intermediate recesses 23c fit together as the front pad portion 1 and the rear pad portion 2 are brought together in the front-rear direction to form the interlocking parts. This makes the boundary between the front pad portion and the rear pad portion at the outer edge simpler compared to the above embodiment in which the interlocking parts 3 are formed on the outer edge, and it is possible to suppress the impact on the appearance and feel of the headrest. In addition, an intermediate convex portion 23b and an intermediate concave portion 23c may be formed in addition to the above embodiment (headrest pad 11 in which the concave and concave fitting portions 3 are formed on the outer edges of the front pad portion 1 and the rear pad portion 2).

[0048] 6. In the above embodiment, a headrest pad 11 in which multiple interlocking parts 3 are intermittently provided on the outer edges of the front pad portion 1 and the rear pad portion 2 was described as an example. However, regardless of this, the interlocking parts may be continuously formed across the entire vertical area on each side edge in the left-right direction and the entire left-right area on the upper edge of the front pad portion and the rear pad portion. Specifically, as shown in Figures 11 and 12, a spigot projection 33b and a spigot recess 33c are formed on the mating surfaces 1a and 2a of the front pad portion 1 and the rear pad portion 2. The spigot projection 33b and the spigot recess 33c fit together to form an interlocking part as the front pad portion 1 and the rear pad portion 2 are brought together in the front-rear direction. This makes it possible to visually confirm whether the interlocking parts are properly fitted, and makes the process of joining the front pad portion and the rear pad portion easier. Furthermore, the boundary between the front and rear pad portions at the outer edge can be simplified, which helps to minimize any impact on the appearance and feel of the headrest. In addition, since the force that tries to shift the front and rear pad portions is distributed across the entire widthwise area of ​​the upper edge and / or the entire heightwise area of ​​each side edge, the shifting between the front and rear pad portions is more effectively suppressed. Note that the mating surfaces 1a and 2a of the front pad portion 1 and the rear pad portion 2 may also have a spigot projection 33b, a spigot recess 33c, an intermediate projection 23b, and an intermediate recess 23c formed thereon.

[0049] 7. In the above embodiment, the present invention was applied to a headrest attached to a seat back in an automobile, but it may also be applied to a headrest attached to a seat back in an airplane, ship, train, etc. [Explanation of Symbols]

[0050] 1. Front pad section 1a Machining surface 2 Rear pad section 2a mating surface 3. Interlocking part 3a Upper and lower edge fitting portion 3b Upper and lower convex parts 3c Upper and lower recesses 3p Each side edge fitting part 3q Left and right convex parts 3r Left and right recesses 4a~4h Contact surface 5. Headrest stay (built-in) 5a Stay leg 5b Stay connection section 5x hanging part 5y slope 6. Stay housing fitting section 6a Stay fitting groove 6b Stay pressing protrusion 6c Support part 6x space 10 headrests 11 Headrest pads 12 Headrest Covers 13 Headrest body

Claims

1. A headrest having a headrest pad that covers the internal components, and a headrest cover that is placed over the headrest pad, The headrest pad has a front pad portion and a rear pad portion that are joined together to sandwich the built-in components from the front and rear, and a recessed fitting portion formed on the mating surface between the front pad portion and the rear pad portion, which fits together with the front pad portion and the rear pad portion in the front and rear directions as they are joined, and restricts relative movement in a direction intersecting the joining direction between the front pad portion and the rear pad portion. The aforementioned interlocking fitting portion includes upper and lower edge fitting portions formed between the upper and lower edges of the front pad portion and the rear pad portion, and side edge fitting portions formed between the respective side edges in the width direction of the front pad portion and the rear pad portion. A headrest in which the upper and lower edge fitting portions restrict relative movement in the height direction between the front pad portion and the rear pad portion through fitting with contact in the height direction, and each of the side edge fitting portions restricts relative movement in the width direction between the front pad portion and the rear pad portion through fitting with contact in the width direction.

2. A headrest according to claim 1, The aforementioned internal component is a headrest stay comprising a pair of stay legs extending in the height direction and a stay connecting portion seamlessly connecting the pair of stay legs, A headrest further having a concave stay fitting groove formed on the mating surface, which allows a pair of stay legs to be fitted together so as to sandwich them in the width direction.

3. A headrest according to claim 1 or claim 2, The aforementioned interlocking portion is not formed on the outer edges of the front pad portion and the rear pad portion, but is formed on the intermediate portion that leaves the outer edges intact.

4. A headrest according to claim 1 or claim 2, A headrest in which the aforementioned interlocking fitting portion is continuously formed across the entire height region and the entire width region of the upper edge of each side edge in the width direction of the front pad portion and the rear pad portion.

Images