Headrest

Abstract

[Problem] To reduce local deformations of a pad in a headrest incorporating speakers. [Solution] A headrest (4) of a vehicle seat (1) includes: headrest pillars (11) supported by a seat back (3); a headrest body (12) connected to the headrest pillars; at least one speaker (13) supported by the headrest body; a pad (14) covering the headrest body and having at least one pad opening (121) in a portion that faces the speaker; a shape-keeping material (15) in a mesh form provided along the outer surface of the pad so as to cover the pad opening and coupled to the outer surface of the pad at edges; and a skin material (16) covering the pad and the shape-keeping material.

Description

[Technical field]

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

[0002] Patent Document 1 discloses a headrest having a speaker inside. The headrest has a frame body forming a hollow portion, a pad provided on the outer surface of the frame body, and a skin material covering the pad. The speaker is disposed facing the hollow portion, and an opening is formed in the frame body. The pad and the skin material have air vents formed therein that communicate with the opening. Sound output from the speaker is transmitted to the outside of the headrest via the hollow portion, the opening, and the air vent. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 6-52615 Summary of the Invention [Problem to be solved by the invention]

[0004] The air holes formed in the pad and the covering material have the problem of reducing the rigidity of the pad and the covering material, which may result in localized change in softness of the headrest at the location of the air holes, which may cause discomfort to the user's head.

[0005] In view of the above background, an object of the present invention is to suppress local deformation of a pad in a headrest with a built-in speaker. [Means for solving the problem]

[0006] In order to solve the above problems, one aspect of the present invention is a headrest (4) for a vehicle seat (1), comprising: a headrest pillar (11) supported on a seat back (3); a headrest main body (12) connected to the headrest pillar; at least one speaker (13) supported on the headrest main body; a pad (14) covering the headrest main body and having at least one pad opening (121) in a portion facing the speaker; a mesh-like shape-retaining material (15) provided along an outer surface of the pad so as to cover the pad opening and connected to the outer surface of the pad at its edge; and a skin material (16) covering the pad and the shape-retaining material.

[0007] According to this aspect, it is possible to suppress local deformation in a headrest having a built-in speaker. Since the shape retaining material imparts rigidity to the pad, deformation of the opening of the pad is suppressed.

[0008] In the above aspect, a frame portion (125) having higher rigidity than the shape retaining material may be provided on the edge of the shape retaining material, and the frame portion may be joined to the pad.

[0009] According to this aspect, the shape retaining material and the frame further suppress deformation of the pad opening.

[0010] In the above aspect, the pad opening may open to a front surface of the pad, and the shape retaining material may extend vertically across the front surface of the pad and be joined to an upper end and a lower end of the pad.

[0011] According to this embodiment, since the shape retaining material is disposed over a relatively wide area, the load applied to the pad is dispersed, and local deformation of the pad is further suppressed.

[0012] In the above aspect, the headrest main body has a support plate (35) connected to the headrest pillar and facing forward and backward, a front case (37) provided on the front side of the support plate and forming an internal space (36) between the support plate and the front case, and a rear case (38) provided on the rear side of the support plate, the speaker is supported on the front side of the support plate and disposed in the internal space, the front case has at least one case opening (66) penetrating forward and backward in a portion facing the speaker, and a first sound-absorbing material (117) may be provided around the speaker.

[0013] According to this embodiment, the first sound-absorbing material suppresses vibrations transmitted from the speaker to the support plate, the front case, and the rear case.

[0014] In the above aspect, the speakers may be provided at the left and right ends of the front surface of the support plate, and a partition wall (69) that divides the internal space into left and right spaces may be provided in the center in the left-right direction of the internal space.

[0015] According to this aspect, interference between the sounds output from the left and right speakers is suppressed.

[0016] In the above aspect, a funnel (81) extending toward the speaker may be provided on the edge of the case opening.

[0017] According to this aspect, the funnel regulates the direction of the sound output from each speaker, thereby suppressing interference between the sounds output from the left and right speakers.

[0018] In the above aspect, a second sound absorbing material (118) may be provided between the partition wall and the left and right speakers.

[0019] According to this aspect, interference between the sounds output from the left and right speakers is suppressed.

[0020] In the above aspect, the partition may be formed of a flexible sound absorbing material.

[0021] According to this aspect, interference between the sounds output from the left and right speakers is suppressed.

[0022] In the above aspect, when the front case and the rear case are joined to each other, the support plate is sandwiched between the front case and the rear case, and the front case, the rear case and the support plate may abut against each other via cushioning material (111-114).

[0023] According to this aspect, it is possible to suppress vibrations transmitted from the support plate to the front case and the rear case.

[0024] In the above aspect, a rear cover (130) may be coupled to the rear surface of the rear case, and a vibration-damping material (138) may be provided on the front surface of the rear cover.

[0025] According to this aspect, it is possible to suppress the transmission of sound rearward from the headrest. Effect of the Invention

[0026] One aspect of the present invention is a headrest (4) for a vehicle seat (1), comprising: a headrest pillar (11) supported by a seat back (3); a headrest main body (12) connected to the headrest pillar; at least one speaker (13) supported by the headrest main body; a pad (14) covering the headrest main body and having at least one pad opening (121) in a portion facing the speaker; a mesh-like shape-retaining material (15) provided along an outer surface of the pad so as to cover the pad opening and connected to the outer surface of the pad at its edge; and a skin material (16) covering the pad and the shape-retaining material.

[0027] According to this aspect, it is possible to suppress local deformation in a headrest having a built-in speaker. Since the shape retaining material imparts rigidity to the pad, deformation of the opening of the pad is suppressed.

[0028] In the above aspect, a frame portion (125) having higher rigidity than the shape retaining material may be provided on the edge of the shape retaining material, and the frame portion may be joined to the pad.

[0029] According to this aspect, the shape retaining material and the frame further suppress deformation of the pad opening.

[0030] In the above aspect, the pad opening may open to a front surface of the pad, and the shape retaining material may extend vertically across the front surface of the pad and be joined to an upper end and a lower end of the pad.

[0031] According to this embodiment, since the shape retaining material is disposed over a relatively wide area, the load applied to the pad is dispersed, and local deformation of the pad is further suppressed.

[0032] In the above aspect, the headrest main body has a support plate (35) connected to the headrest pillar and facing forward and backward, a front case (37) provided on the front side of the support plate and forming an internal space (36) between the support plate and the front case, and a rear case (38) provided on the rear side of the support plate, the speaker is supported on the front side of the support plate and disposed in the internal space, the front case has at least one case opening (66) penetrating forward and backward in a portion facing the speaker, and a first sound-absorbing material (117) may be provided around the speaker.

[0033] According to this embodiment, the first sound-absorbing material suppresses vibrations transmitted from the speaker to the support plate, the front case, and the rear case.

[0034] In the above aspect, the speakers may be provided at the left and right ends of the front surface of the support plate, and a partition wall (69) that divides the internal space into left and right spaces may be provided in the center of the internal space in the left-right direction.

[0035] According to this aspect, interference between the sounds output from the left and right speakers is suppressed.

[0036] In the above aspect, a funnel (81) extending toward the speaker may be provided on the edge of the case opening.

[0037] According to this aspect, the funnel regulates the direction of the sound output from each speaker, thereby suppressing interference between the sounds output from the left and right speakers.

[0038] In the above aspect, a second sound absorbing material (118) may be provided between the partition wall and the left and right speakers.

[0039] According to this aspect, interference between the sounds output from the left and right speakers is suppressed.

[0040] In the above aspect, the partition may be formed of a flexible sound absorbing material.

[0041] According to this aspect, interference between the sounds output from the left and right speakers is suppressed.

[0042] In the above aspect, when the front case and the rear case are joined to each other, the support plate is sandwiched between the front case and the rear case, and the front case, the rear case and the support plate may abut against each other via cushioning material (111-114).

[0043] According to this aspect, it is possible to suppress vibrations transmitted from the support plate to the front case and the rear case.

[0044] In the above aspect, a rear cover (130) may be coupled to the rear surface of the rear case, and a vibration-damping material (138) may be provided on the front surface of the rear cover.

[0045] According to this aspect, it is possible to suppress the transmission of sound rearward from the headrest. [Brief description of the drawings]

[0046] [Figure 1] FIG. 1 is a perspective view of a seat according to an embodiment; [Diagram 2] A perspective view of a headrest [Diagram 3] Exploded perspective view of a headrest [Figure 4] FIG. 2 is a perspective view showing a headrest body and a headrest pillar; [Diagram 5] A perspective view of the support plate from the rear [Figure 6] A perspective view of the support plate from the front [Figure 7] Rear perspective view of the front case [Figure 8] Front perspective view of the rear case [Figure 9] Rear perspective view of the rear case [Figure 10] A longitudinal cross-sectional view of the headrest (cross-sectional view taken along XX in Fig. 2) [Figure 11] A longitudinal cross-sectional view of the headrest (cross-sectional view taken along the line XI-XI in Fig. 2) [Figure 12] Horizontal cross-sectional view of the headrest (cross-sectional view taken along XII-XII in Fig. 2) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0047] Hereinafter, an embodiment of a headrest according to the present invention will be described with reference to the drawings. The headrest is applied to a vehicle seat. In the following embodiment, an example of a headrest for a vehicle seat will be described.

[0048] As shown in FIG. 1, the seat 1 has a seat cushion 2, a seat back 3, and a headrest 4. The seat cushion 2 supports the buttocks of a user from below. The seat back 3 extends upward from the rear of the seat cushion 2. The seat back 3 supports the back of the user from behind. The headrest 4 is provided at the upper end of the seat back 3. The headrest 4 supports the head of the user from behind.

[0049] As shown in FIGS. 2 to 4, the headrest 4 has a headrest pillar 11, a headrest main body 12, at least one speaker 13, a pad 14, at least one shape retaining material 15, and a cover material 16.

[0050] As shown in FIG. 1, the headrest pillar 11 is supported by the seat back 3. As shown in FIG. 3 and FIG. 5, the headrest pillar 11 has left and right vertical portions 21 extending in the up-down direction, and a horizontal portion 22 extending in the left-right direction and connected to the upper ends of the left and right vertical portions 21. A passage hole 25 in which a wire harness 24 is disposed is formed inside the left and right vertical portions 21 and the horizontal portion 22. The passage hole 25 has a lower opening 26 at the lower ends of the left and right vertical portions 21. The passage hole 25 also has an upper opening 27 in the horizontal portion 22. Grommets 28 are attached to the lower opening 26 and the upper opening 27. The grommet 28 is preferably formed of a resin material. The headrest pillar 11 is preferably formed by bending a metal pipe.

[0051] As shown in FIG. 1, the left and right vertical portions 21 are supported by a seat back frame 29 that forms the framework of the seat back 3. The seat back frame 29 is provided with left and right pillar support portions 30 that receive the vertical portions 21. The pillar support portions 30 are formed in a cylindrical shape with both ends open. The pillar support portions 30 may be formed of a resin material. The vertical portions 21 are inserted into the corresponding pillar support portions 30. The lower ends of the vertical portions 21 protrude from the lower ends of the pillar support portions 30. As shown in FIG. 2, a plurality of locking grooves 31 are formed on the outer surface of the vertical portions 21 and arranged at intervals in the longitudinal direction. As shown in FIG. 1, the pillar support portion 30 is provided with a locking device 32 that selectively locks one of the plurality of locking grooves 31. The height of the headrest 4 relative to the seat back 3 is determined by the locking device 32 locking one of the plurality of locking grooves 31.

[0052] As shown in Figures 3 to 6, the headrest main body 12 is joined to the headrest pillar 11. The headrest main body 12 has a support plate 35 joined to the headrest pillar 11 and facing forward and backward, a front case 37 provided in front of the support plate 35 and forming an internal space 36 between it and the support plate 35, and a rear case 38 provided behind the support plate 35. The support plate 35 is preferably formed from a metal plate. The front case 37 and the rear case 38 are preferably formed from a resin material.

[0053] The support plate 35 has a front-rear surface and extends left-right. The headrest pillar 11 is joined to the rear surface of the support plate 35. In particular, the horizontal portion 22 and the left and right vertical portions 21 are preferably welded to the rear surface of the support plate 35.

[0054] At least one central opening 41 penetrating in the thickness direction is formed in the center of the support plate 35. Left and right engagement grooves 42 recessed downward are formed in the upper edge of the support plate 35. At least one first fastening hole 43 penetrating in the thickness direction is formed in the lower part of the support plate 35.

[0055] A pair of left and right speakers 13 are supported on the headrest main body 12. The pair of left and right speakers 13 are provided at the left and right ends of the front surface of the support plate 35. Each speaker 13 has a vertically long rectangular speaker case 46. A speaker unit 47 that outputs sound is provided inside the speaker case 46. The speaker unit 47 is exposed on the front surface of the speaker case 46 and outputs sound toward the front of the speaker case 46. Each speaker 13 may have a sound absorbing material 48 attached to the front surface of the support plate 35. The sound absorbing material 48 may be a vibration-proof material, such as a rubber sheet or felt. The sound absorbing material 48 suppresses the transmission of vibrations of the speaker 13 to the support plate 35.

[0056] A microphone unit 51 is coupled to the lower end of each speaker 13. The microphone unit 51 may be omitted.

[0057] Each speaker 13 and each microphone unit 51 are connected to a control device 53 by a wire harness 24. The control device 53 is an electronic control device, and is a computing device having a microprocessor (MPU), a non-volatile memory, a volatile memory, and an interface. The control device 53 realizes various applications by the microprocessor executing programs stored in the non-volatile memory. The control device 53 is preferably disposed inside the seat back 3 or below the seat cushion 2.

[0058] As shown in FIG. 5, the wire harness 24 passes through the lower opening 26, the passage hole 25, and the upper opening 27 from inside the seat back 3 to reach inside the headrest 4. The wire harness 24 is supported by a harness locking portion 59 joined to the rear surface of the support plate 35. The harness locking portion 59 is a resin clip having a ring portion through which the wire harness 24 passes. The harness locking portion 59 is locked to a locking hole formed in the support plate 35 by a locking claw. The upper end of the wire harness 24 branches into a plurality of branching portions 54. Each branching portion 54 passes through the central opening 41 and extends to the front side of the support plate 35. Each branching portion 54 is provided with a connector 55.

[0059] As shown in FIG. 6, each speaker 13 has a harness 13B having a connector 13A at its tip. Similarly, each microphone unit 51 has a harness 51B having a connector 51A at its tip. Each connector 13A, 51A is provided with a locking claw 13C, 51C. The locking claw 13C, 51C engages with a locking hole formed in the support plate 35. As a result, each connector 13A, 51A is attached to the front surface of the support plate 35. Each connector 13A, 51A may be arranged around a plurality of central openings 41. In this embodiment, a pair of connectors 13A is arranged on the left and right of the upper central opening 41, and a pair of connectors 51A is arranged on the left and right of the lower central opening 41. Each connector 55 is connected to the corresponding connector 13A, 51A.

[0060] 4 and 7, the front case 37 is formed in a box shape that opens toward the rear. The front case 37 has a front wall portion 61 whose faces face forward and backward, an upper wall portion 62 that extends rearward from an upper edge of the front wall portion 61, left and right side wall portions 63 that extend rearward from left and right side edges of the front wall portion 61, and a lower wall portion 64 that extends rearward from a lower edge of the front wall portion 61. The left and right side portions of the front wall portion 61 are inclined forward toward the sides.

[0061] The front case 37 has at least one case opening 66 penetrating from the front to the rear in a portion facing the speaker 13. In this embodiment, a case opening 66 is formed in each of the left and right side portions of the front wall portion 61. A lattice 67 is provided in the left and right case openings 66.

[0062] A partition wall 69 is provided at the center of the rear surface of the front wall portion 61, protruding rearward and extending vertically. The partition wall 69 is preferably connected to the upper wall portion 62 and the lower wall portion 64. The partition wall 69 may be formed integrally with the front case 37. Alternatively, the partition wall 69 may be a member independent of the front case 37 and formed from a different member. The partition wall 69 may be formed from a sound absorbing material such as urethane foam, and attached to the front case 37.

[0063] A pair of left and right upper bosses 71 protruding rearward are provided at the top of the back surface of the front wall 61. The left and right upper bosses 71 are disposed on the left and right of the partition wall 69. A connecting piece 72 extending rearward is provided at the rear ends of the left and right upper bosses 71. The connecting piece 72 has a claw portion extending downward. A lightening portion 73 is formed on the inside of each of the left and right upper bosses 71. Each lightening portion 73 opens to the front surface of the front wall 61.

[0064] A pair of left and right lower bosses 75 protruding rearward are provided on the lower part of the rear surface of the front wall portion 61. The left and right lower bosses 75 are disposed on the left and right of the partition wall 69. The left and right lower bosses 75 are formed in a cylindrical shape and have a bottom plate portion 76 at their rear ends. A second fastening hole 77 is formed in the bottom plate portion 76, penetrating in the thickness direction.

[0065] 7 and 10 to 12, funnels 81 extending toward speaker 13 are provided on each edge of case opening 66. Funnel 81 is formed in a cylindrical shape and extends rearward from the rear surface of front wall 61. The rear end of funnel 81 faces speaker unit 47, which is the output portion of speaker 13.

[0066] 4 and 7, a plurality of first cover locking holes 83 are formed in each of the left and right side wall portions 63 of the front case 37. The plurality of first cover locking holes 83 penetrate the corresponding side wall portion 63 in the thickness direction.

[0067] 8 and 9, the rear case 38 is formed in a box shape that opens forward. The rear case 38 has a rear wall 91 whose faces face forward and backward, an upper wall 92 extending forward from an upper edge of the rear wall 91, left and right side wall portions 93 extending rearward from left and right side edges of the rear wall 91, and a lower wall portion 94 extending rearward from a lower edge of the rear wall 91.

[0068] A pair of left and right rear hooks 96 that protrude forward and extend downward are provided on the upper part of the front surface of the rear wall portion 91. A coupling hole 97 that is recessed rearward is formed in the front end of the rear hooks 96. The coupling hole 97 receives the coupling piece 72.

[0069] A pair of left and right rear bosses 101 protruding forward are provided on the lower part of the front surface of the rear wall portion 91. Each rear boss 101 is formed with an internally threaded hole 102. The internally threaded hole 102 extends rearward from the front end face of the rear boss 101.

[0070] At least one protrusion 104 protruding forward is formed on the front surface of the rear wall 91. The at least one protrusion 104 may be connected to each other or may be independent of each other. In this embodiment, the protrusion 104 is formed in a ring shape in the center of the front surface of the rear lower part. The protrusion 104 is connected to the left and right rear hooks 96 and the left and right rear bosses 101. A recess 105 recessed forward is formed in a portion of the rear surface of the rear wall 91 corresponding to the protrusion 104. A plurality of skin hooks 106 are provided on the side wall of the recess 105 forming the edge of the recess 105. A plurality of second cover locking holes 108 penetrating in the thickness direction are formed in the bottom of the recess 105 forming the bottom of the recess 105.

[0071] As shown in FIG. 10, the left and right rear hooks 96 are caught in the left and right engagement grooves 42 of the support plate 35. This causes the rear case 38 to be supported by the support plate 35. At this time, the convex portions 104 abut against the rear surface of the support plate 35 and the left and right vertical portions 21 of the headrest pillar 11. Also, the front ends of the left and right rear bosses 101 abut against the edges of the corresponding first fastening holes 43 on the rear surface of the support plate 35. Also, each female screw hole 102 faces the corresponding first fastening hole 43. In this manner, the rear case 38 is supported by the support plate 35. The front ends of the left and right rear hooks 96 protrude forward beyond the support plate 35.

[0072] The left and right connecting pieces 72 of the front case 37 are inserted into the connecting holes 97 of the corresponding rear hooks 96 and connected. As a result, the upper part of the front case 37 is connected to the upper part of the rear case 38. In this state, the bottom plate parts 76 of the lower bosses 75 of the front case 37 abut against the edges of the first fastening holes 43 on the front side of the support plate 35. The left and right second fastening holes 77 face the corresponding first fastening holes 43. The front case 37, the support plate 35, and the rear case 38 are fastened to each other by the screws 103 that pass through the second fastening holes 77 and the first fastening holes 43 from the front side of the front case 37 and screw into the female screw holes 102. In this way, the front case 37 and the rear case 38 are connected to each other, and the support plate 35 is sandwiched between the front case 37 and the rear case 38.

[0073] The front case 37, the rear case 38 and the support plate 35 may be in contact with each other via a cushioning material. As shown in FIG. 10, a first cushioning material 111 may be provided between the left and right rear hooks 96 and the left and right engagement grooves 42. A second cushioning material 112 may be provided between the bottom plate portion 76 of the lower boss 75 and the support plate 35. A third cushioning material 113 may be provided between the front end portion of the rear boss 101 and the support plate 35. As shown in FIG. 11, a fourth cushioning material 114 may be provided between the convex portion 104 and the rear surface of the support plate 35 and between the convex portion 104 and the headrest pillar 11. The first to fourth cushioning materials 114 may be made of a flexible material such as rubber or felt. The first to fourth cushioning materials 111 to 114 suppress the transmission of vibration between the support plate 35, the front case 37, and the rear case 38.

[0074] As shown in FIG. 12, when the front case 37 and the rear case 38 are joined to the support plate 35, an internal space 36 is formed between the support plate 35 and the front case 37. A partition wall 69 of the front case 37 divides the internal space 36 into left and right parts. The left and right speakers 13 are disposed in the internal space 36. When the partition wall 69 is formed of a flexible sound-absorbing material, the rear end of the partition wall 69 may be in contact with the front surface of the support plate 35. When the partition wall 69 is formed integrally with the front case 37, the rear end of the partition wall 69 may be spaced apart from the front surface of the support plate 35. In this case, a flexible sound-absorbing material may be filled between the rear end of the partition wall 69 and the support plate 35.

[0075] Sound absorbing material 117 is provided around each speaker 13. Sound absorbing material 117 is preferably provided in an annular shape so as to surround the upper surface, lower surface, and left and right side surfaces of speaker 13. Sound absorbing material 117 is preferably made of, for example, urethane foam.

[0076] Sound absorbing materials 118 are provided between the partition wall 69 and the left and right speakers 13. The sound absorbing materials 118 are preferably provided along the left and right sides of the partition wall 69. Each sound absorbing material 118 is preferably filled in a space between the partition wall 69 and the sound absorbing material 117 attached to the speaker 13. The sound absorbing materials 118 are preferably formed of felt, for example.

[0077] As shown in Figs. 10 to 12, the pad 14 covers the headrest main body 12. That is, the pad 14 is provided along the outer surfaces of the front case 37 and the rear case 38. The pad 14 is provided at least along the front surface of the front wall 61 of the front case 37, the upper wall 62 of the front case 37 and the upper wall 92 of the rear case 38, the lower wall 64 of the front case 37 and the lower wall 94 of the rear case 38, the left and right side wall 63 of the front case 37 and the left and right side wall 93 of the rear case 38. The pad 14 is made of a movable material. The pad 14 may be made of urethane foam, for example.

[0078] The pad 14 has at least one pad opening 121 in a portion facing the speaker 13. In this embodiment, multiple pad openings 121 are arranged in front of the left and right case openings 66 of the front case 37. Each pad opening 121 opens to the front surface of the pad 14. Each pad opening 121 penetrates the pad 14 in the thickness direction. One pad opening 121 may be formed for one case opening 66, or multiple pad openings 121 may be formed for one case opening 66. The multiple pad openings 121 communicate with the corresponding case openings 66.

[0079] As shown in Figures 3, 11, and 12, in this embodiment, a pair of left and right shape retaining materials 15 are provided on the outer surface of the pad 14. Each shape retaining material 15 is provided along the outer surface of the pad 14 so as to cover the pad opening 121. The shape retaining material 15 is bonded to the outer surface of the pad 14 at its edge. The shape retaining material 15 is preferably formed in a mesh shape. The shape retaining material 15 has higher rigidity than the pad 14. The shape retaining material 15 is preferably formed with a higher Young's modulus than the pad 14.

[0080] A frame portion 125 having higher rigidity than the shape retaining material 15 is provided at the edge of the shape retaining material 15. The frame portion 125 may be formed of a sheet material such as a woven fabric. The frame portion 125 may have a higher Young's modulus than the shape retaining material 15. The shape retaining material 15 may be bonded to the outer surface of the pad 14 via the frame portion 125. That is, the frame portion 125 may be bonded to the pad 14. The frame portion 125 may be bonded to the pad 14 by, for example, an adhesive or double-sided tape.

[0081] Each shape retainer 15 may extend up and down on the front surface of the pad 14 and be connected to the upper and lower ends of the pad 14. In another embodiment, the upper end of the shape retainer 15 may extend rearward beyond the upper rear end of the pad 14 and be connected to the rear case 38. Similarly, the lower end of the shape retainer 15 may extend rearward beyond the lower rear end of the pad 14 and be connected to the rear case 38.

[0082] The cover material 16 covers the pad 14 and the shape retaining material 15. The cover material 16 is preferably formed in a bag shape that opens to the rear. The edges of the cover material 16 are hooked to a plurality of cover hooks 106 formed on the rear surface of the rear case 38. A plurality of through holes 126 that penetrate in the thickness direction are preferably formed in the portions of the cover material 16 that face the plurality of pad openings 121.

[0083] As shown in FIG. 3 and FIG. 10 to FIG. 12, a rear cover 130 is attached to the rear surface of the rear case 38. The rear cover 130 has a cover central portion 131 extending left and right, and left and right cover side portions 132 extending forward from both left and right ends of the cover central portion 131. The cover central portion 131 is formed in a plate shape facing forward and backward. The left and right cover side portions 132 are formed in a plate shape facing left and right. The left and right cover side portions 132 are provided with first locking claws 134 that are locked to the left and right first cover locking holes 83 of the front case 37, respectively. The pad 14 and the skin material 16 are formed with through holes through which the left and right first locking claws 134 pass. The cover central portion 131 is provided with a plurality of second locking claws 135 that are formed in a plurality of second cover locking holes 108 of the rear case 38.

[0084] The cover center portion 131 of the rear cover 130 covers the recessed portion 105 of the rear case 38 and hides the edge of the skin material 16. The left and right cover side portions 132 form the left and right end portions of the headrest 4. A vibration-damping material 138 is provided on the front surface of the rear cover 130. For example, a plurality of vibration-damping materials 138 may be attached to the front surface of the cover center portion 131. The vibration-damping material 138 may be, for example, a rubber sheet. The vibration-damping material 138 may be sandwiched between the rear cover 130 and the rear case 38. The vibration-damping material 138 suppresses vibration of the rear case 38 and suppresses sound from being transmitted rearward from the headrest 4.

[0085] Next, a manufacturing method of the headrest 4 according to the embodiment will be described. First, the headrest pillar 11 is joined to the support plate 35 by welding or the like. Next, the speaker 13 and the microphone unit 51 are fastened to the support plate 35 via the sound absorbing material 48. Then, the connector 13A of the speaker 13 is joined to the support plate 35 by the locking claw 13C. Similarly, the connector 51A of the microphone unit 51 is joined to the support plate 35 by the locking claw 51C.

[0086] Next, the wire harness 24 is inserted into the passage hole 25 of the headrest pillar 11 and the pillar support portion 30. At this time, at least one of the connectors at both ends of the wire harness 24 is removed. For example, in a state in which a plurality of connectors 55 are attached to the wire harness 24, the end of the wire harness 24 on the control device 53 side may be inserted into the passage hole 25 from the upper opening 27. Then, after the end of the wire harness 24 on the control device 53 side is pulled out from the lower opening 26 and passed through the pillar support portion 30, a connector for connecting to the control device 53 may be attached to the end of the wire harness 24 on the control device 53 side. Also, each connector 55 is connected to the corresponding connector 13A, 51A.

[0087] Next, the rear case 38 is engaged with the support plate 35. In this state, the front case 37 is joined to the rear case 38. As a result, the front case 37 and the rear case 38 hold the support plate 35 in between. As a result, the headrest main body 12 is formed by the support plate 35, the front case 37, and the rear case 38.

[0088] Next, the pad 14 is placed over the front case 37 and the rear case 38. Next, the shape retaining material 15 having a frame portion 125 is joined to the surface of the pad 14. Next, the pad 14, the shape retaining material 15, and the frame portion 125 are covered with the skin material 16. The edges of the skin material 16 are hooked onto the multiple skin hooks 106 of the rear case 38.

[0089] Next, the rear cover 130 is joined to the front case 37 and the rear case 38, thereby hiding the edges of the covering material 16. Through the above assembly procedure, the headrest 4 is formed.

[0090] In the headrest 4 according to the embodiment, the shape retaining material 15 is provided on the outer surface side of the opening of the pad 14, so that local deformation can be suppressed. The shape retaining material 15 imparts rigidity to the pad 14, so deformation of the opening of the pad 14 is suppressed. By providing a frame portion 125 on the edge of the shape retaining material 15, the rigidity of the shape retaining material 15 is increased, and deformation of the pad opening 121 is further suppressed. By arranging the shape retaining material 15 over a relatively wide range, the load applied to the pad 14 is distributed, and local deformation of the pad 14 is further suppressed.

[0091] The sound absorbing material 117 suppresses vibrations transmitted from the speakers 13 to the support plate 35, the front case 37, and the rear case 38. The sound absorbing material 118 and the partition wall 69 suppress interference between sounds output from the left and right speakers 13. The funnel 81 regulates the direction of the sounds output from each speaker 13, transmitting the sounds forward to the headrest 4. This suppresses interference between the sounds output from the left and right speakers 13.

[0092] Although the embodiment of the present invention has been described above, the present invention is not limited thereto, and various design modifications are possible without departing from the gist of the present invention. The shape retaining material 15 may be provided on the entire surface of the pad 14. The shape retaining material 15 may also be bonded to the back surface of the skin material 16. [Explanation of symbols]

[0093] 1: Sheet 4: Headrest 11: Headrest pillar 12: Headrest body 13: Speaker 14: Pad 15: Shape retaining material 16:Skin material 24: Wire harness 35: Support plate 36: Interior space 37: Front case 38: Rear case 48: Sound absorbing material 51: Microphone unit 66: Case opening 69: Bulkhead 81: Funnel 111: 1st buffer material 112:Second buffer material 113: Third buffer material 114: 4th buffer material 117: First sound absorbing material 118: Second sound absorbing material 121: Pad opening 125: Frame section 130: Rear cover 138: Damping material

Claims

1. A headrest for a vehicle seat, comprising: A headrest pillar supported by the seat back; A headrest main body coupled to the headrest pillar; At least one speaker supported by the headrest body; a pad that is placed on the headrest body and has at least one pad opening in a portion that faces the speaker; a mesh-like shape retaining material provided along an outer surface of the pad so as to cover the pad opening and connected to the outer surface of the pad at an edge; A skin material is provided covering the pad and the shape retaining material, The headrest body is A support plate coupled to the headrest pillar and facing forward and backward; A rear case is provided on the rear side of the support plate, A headrest in which an upper end of the shaping material extends rearward beyond the upper rear end of the pad and is connected to the rear case, and a lower end of the shaping material extends rearward beyond the lower rear end of the pad and is connected to the rear case.

2. A frame portion having a higher rigidity than the shape retaining material is provided at an edge portion of the shape retaining material, The headrest of claim 1 , wherein the frame is coupled to the pad.

3. The pad opening opens to a front surface of the pad, The headrest according to claim 2 , wherein the shape retaining material extends vertically on the front surface of the pad.

4. The headrest body is a front case provided on a front side of the support plate and forming an internal space between the support plate and a front case; the speaker is supported on a front surface of the support plate and disposed in the interior space; the front case has at least one case opening penetrating forward and backward in a portion facing the speaker, 4. The headrest according to claim 1, further comprising a first sound absorbing material provided around the speaker.

5. The speakers are provided at the left and right ends of the front surface of the support plate, The headrest according to claim 4, wherein a partition wall is provided in a central portion in the left-right direction of the internal space to divide the internal space into left and right spaces.

6. The headrest according to claim 5 , wherein a funnel is provided on an edge of the case opening, the funnel extending toward the speaker.

7. The headrest according to claim 5, further comprising a second sound absorbing material provided between the partition wall and the left and right speakers.

8. The headrest according to claim 6, wherein the partition is formed of a flexible sound absorbing material.

9. When the front case and the rear case are coupled to each other, the support plate is sandwiched between the front case and the rear case, The headrest according to claim 4 , wherein the front case, the rear case and the support plate are in contact with each other via a shock-absorbing material.

10. A rear cover is coupled to the rear surface of the rear case, 5. The headrest according to claim 4, wherein a vibration-damping material is provided on a front surface of the rear cover.

11. A headrest for a vehicle seat, comprising: A headrest pillar supported by the seat back; A headrest main body coupled to the headrest pillar; At least one speaker supported by the headrest body; a pad that is placed on the headrest body and has at least one pad opening in a portion that faces the speaker; a mesh-like shape retaining material provided along an outer surface of the pad so as to cover the pad opening and connected to the outer surface of the pad at an edge; A skin material is provided covering the pad and the shape retaining material, The headrest body has a front case provided in front of the speaker, the front case has at least one case opening penetrating forward and backward in a portion facing the speaker, The headrest has a first sound absorbing material provided around the speaker.

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