JP2015098268A - Headrest, vehicle seat, and headrest built-in vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headrest which includes a speaker and yet has a size equivalent to a headrest including no speaker.SOLUTION: A headrest 4 includes: a core material 14; an elastic body 30 which covers a surface of the core material 14 and achieves cushioning performance when a head is applied to the headrest 4; speakers 25a, 25b, 25c which generate sounds; and a surface cover material 10 which encloses the core material 14, the elastic body 30, and the speakers 25a, 25b, 25c. The core material 14 serves as an enclosure for the speakers 25a, 25b, 25c.

Description

  The present invention relates to a headrest on which a passenger of a vehicle hits the head. In particular, the present invention relates to a headrest provided with a speaker. The present invention also relates to a vehicle seat provided with a headrest. The present invention also relates to a headrest-integrated vehicle seat.

  Conventionally, according to Patent Literature 1, a headrest including a speaker on a side portion of a portion to which the head is applied is disclosed. Conventionally, Patent Document 2 discloses a headrest with a speaker in which a speaker is arranged on a part of a seat back, which is a part different from a part to which the head is applied.

  With respect to these headrests, there is a problem in that the headrests are naturally enlarged because the speakers are provided in portions other than the portions where the heads touch. In particular, when a spatially large capacity is required for the speaker enclosure, there is a problem that the headrest becomes very large.

Japanese Utility Model Publication No. 4-104948 Japanese Utility Model Publication No. 6-086612

  The present invention has been made in view of the above-described problems in the conventional headrest, and it is an object of the present invention to provide a headrest having the same size as a headrest having a speaker but no speaker. . Another object of the present invention is to apply the headrest to a vehicle seat and a headrest-integrated vehicle seat.

  The headrest according to the present invention includes a core material, an elastic body that covers the surface of the core material and exhibits cushioning properties when hit by the head, a speaker that generates sound, the core material, the elastic body, and the A headrest having a skin material surrounding the speaker, wherein the core member is an enclosure for the speaker.

  In the above configuration, the “enclosure” is an enclosure used for a speaker. This enclosure is an acoustic element for preventing the sound coming out from the rear part of the speaker from interfering with the sound coming out from the front part of the speaker. For example, the following types of enclosures can be considered.

1. Flat Baffle Type The flat baffle type is obtained by attaching the speaker 101 to a simple plate 102 as shown in FIG. The flat baffle type has a configuration in which a plate 102 blocks a sound that has come out behind the speaker 101 from turning around to the front of the speaker 101.

2. Sealed type As shown in FIG. 8 (b), the sealed type seals the box 103, and almost completely blocks the sound that comes out of the speaker 101 from affecting the sound that comes out of the speaker 101. It has the composition to do.

3. Bass reflex type As shown in FIG. 8C, the bass reflex type has a structure in which through holes 104 are provided on the front and rear surfaces of the box 103, and the sound emitted from the rear of the speaker 101, particularly bass, is enhanced by resonance. Yes.

4). Others The enclosure includes other types such as a back load horn type, a drone cone type, a front road phone type, etc. in addition to the above-mentioned types.

  The headrest which concerns on this invention WHEREIN: The said speaker can be attached to the said core material. This makes it easier to use the core as an enclosure.

  In the headrest according to the present invention, a plurality of speakers can be provided, the speakers can be attached to a common core material, and a common enclosure is formed for the plurality of speakers by the common core material. Can do. If it carries out like this, the headrest provided with the some speaker can be formed very small.

  In the headrest according to the present invention, the core material can be formed by combining a front core material that is a portion near the head and a rear core material that is a portion far from the head, and the front core material and the rear core material. And a speaker can be attached to the front core member. According to this configuration, the headrest can be easily manufactured. In addition, it is possible to easily realize the optimal shape of the space as an enclosure.

  In the headrest according to the present invention, the space can be divided into a plurality of spaces, one of the plurality of spaces can be used for the enclosure, and the other of the plurality of spaces One can be used to store a drive circuit for driving the speaker. As a result, the speaker drive circuit can also be accommodated in the headrest.

  The headrest according to the present invention may further include a pillar frame that is provided between the inside and the outside of the core member, and a portion located on the outside is a portion that is attached to a seat back. It can be attached to the pillar frame inside the contact portion. Thereby, a headrest can be formed still smaller.

  In the headrest according to the present invention, the pillar frame can be formed by a cylindrical member, and the cylindrical internal space of the pillar frame can be used for an acoustic effect. The cylindrical member may have a cylindrical shape with a circular cross section, or may have a rectangular tube shape with a rectangular cross section. According to this aspect of the present invention, it is possible to make various types of enclosures according to the purpose.

  In the headrest according to the present invention, by forming a sealed space with the core material, the core material can function as a sealed enclosure. As a result, the sealed enclosure can be easily and compactly formed in the headrest.

  Next, the vehicle seat according to the present invention has a seat cushion, which is a part where the occupant sits, a seat back, which is a part against which the occupant rests, and a seat back that is mounted on the seat back. It is a vehicle seat which has a headrest which is a part, and the headrest is a headrest of each composition mentioned above. According to this vehicle seat, it is possible to provide a vehicle seat that has a speaker and is very refreshing in appearance.

  Next, a headrest-integrated vehicle seat according to the present invention includes a core material, an elastic body that covers the surface of the core material and exhibits cushioning properties when hitting the head, a speaker that generates sound, and boarding In a headrest having a seat back that is a part against which a person rests and a core material, the elastic body, the speaker, and a skin material surrounding the seat back, the core material is an enclosure for a speaker. Features. According to the aspect of the present invention, it is possible to provide a headrest-integrated vehicular seat that has a speaker and is very refreshing in appearance.

  According to the present invention, since the enclosure for the speaker is formed by the core material of the headrest, it is not necessary to provide a dedicated enclosure other than the headrest. For this reason, the speaker can be assembled to a headrest having the same size as the headrest without the speaker. In addition, the appearance of the headrest is not impaired even though the speaker is attached to the headrest.

It is a perspective view showing one embodiment of each of a headrest and a vehicular seat concerning the present invention. It is a perspective view which expands and shows the headrest of FIG. It is a perspective view which shows the headrest frame of FIG. FIG. 4 is an exploded perspective view of the headrest frame of FIG. 3. It is a longitudinal cross-sectional view along the cut surface A in FIG. FIG. 3 is a plan sectional view taken along a cut surface B in FIG. 2. It is a top view of the mesh board shown in FIG.5 and FIG.6. It is a figure which shows the example of an enclosure.

  Hereinafter, a headrest and a vehicle seat according to the present invention will be described based on embodiments. Of course, the present invention is not limited to this embodiment. In addition, in the drawings attached to the present specification, components may be shown in different ratios from actual ones in order to show characteristic parts in an easy-to-understand manner.

  FIG. 1 shows one embodiment of a headrest and a vehicle seat according to the present invention. The vehicle seat 1 shown here is, for example, one of a plurality of seats installed inside an automobile that is one type of vehicle. The vehicle seat 1 includes a seat cushion 2 that is a portion on which the occupant sits, a seat back 3 that is a portion on which the occupant hits his back, and a headrest 4 attached to the seat back 3.

  As shown in FIG. 2, the headrest 4 includes a headrest frame 8 and a cover 9. As shown in FIG. 3, the headrest frame 8 includes a core member 6 and pillar frames 7a and 7b. The core material 6 is formed by joining the front core material 14 and the rear core material 15. The core members 14 and 15 are made of hard resin, for example, PP (polypropylene) or ABS resin.

  In FIG. 2, the cover 9 is formed by sewing a front skin material 10 and a rear skin material 11 together. An opening is formed at the bottom of the cover 9. The core material 6 is covered with the cover 9 by inserting the core material 6 of the headrest frame 8 into the cover 9 from the opening at the bottom of the cover 9. The pillar frames 7 a and 7 b extend to the outside of the cover 9. In FIG. 1, the headrest 4 is attached to the seat back 3 by inserting the pillar frames 7 a and 7 b into holes provided at the top of the seat back 3.

  In FIG. 4E, the pillar frames 7a and 7b are connected to each other by an upper frame 16a and a lower frame 16b. The front core member 14 is screwed to the upper frame 16a at the inner protrusion 19a, and is screwed to the lower frame 16b at the inner protrusions 19b and 19c.

  The rear core 15 is screwed to the upper frame 16a at the internal projections 20a and 20b, and is screwed to the lower frame 16b at the internal projections 20c and 20d. Thus, the front core member 14 is fixed to the front side of the pillar frames 7a and 7b, the rear core member 15 is fixed to the rear side of the pillar frames 7a and 7b, and the front core member 14 and the rear core member 15 are mutually connected. Are combined. As shown in FIG. 3, the pillar frames 7 a and 7 b have their upper portions housed in the core material 6 and their lower portions extending to the outside of the core material 6. As described above, these extended portions are inserted into the seat back 3 of FIG.

  FIG. 5 is a longitudinal sectional view taken along a cutting plane A in FIG. 6 is a cross-sectional plan view taken along the cutting plane B of FIG. As shown in FIGS. 5, 6, and 6 (a) and FIG. 4, a fitting recess 14 b is formed in the peripheral portion of the front core member 14. A peripheral portion of the rear core member 15 is a fitting convex portion 15a. In FIG. 5, a fitting convex portion 14 a extending in the lateral direction (direction passing through the paper surface of FIG. 5) is formed in the lower portion inside the front core member 14. A fitting recess 15b extending in the lateral direction (the direction penetrating the paper surface of FIG. 5) is formed in the lower portion inside the rear core member 15.

  When the front core member 14 is fixed to the upper frame 16a and the lower frame 16b with screws 22a (see FIG. 5), and the rear core member 15 is fixed to the upper frame 16a and the lower frame 16b with screws 22b (see FIG. 5). The fitting convex portion 15a in the peripheral portion of the rear core member 15 and the fitting concave portion 14b in the peripheral portion of the front core member 14 are fitted, and the fitting convex portion 14a in the lower portion of the front core member 14 and the rear side. The fitting recess 15b at the bottom of the core material 15 is fitted. By these fittings, a large space K1 is formed in the upper part inside the core member 6, and a small space K2 is formed in the lower part inside.

The upper internal space K1 is hermetically sealed by fitting the fitting convex portion 15 and the fitting concave portion 14b in the peripheral portion and fitting the fitting convex portion 14a and the fitting concave portion 15b in the lower portion. As shown in FIG. 6A, a sponge can be interposed as the sealing material 17 between the concave portions 14b and 15b and the convex portions 14a and 15a. The lower inner space K2 in FIG. 5 is not sealed in this embodiment. Thus, the core material 6 has a structure that is divided into two parts in the front-rear direction, and is fixed to the pillar frames 7a and 7b with the pillar frames 7a and 7b sandwiched therebetween.
In addition, the sealing structure of the core material 6 is not restricted to the uneven | corrugated fitting structure as mentioned above, A various structure and method are employable. For example, a sealed structure by ultrasonic welding can be adopted.

  The pillar frames 7a and 7b are formed of a cylindrical metal tube or a resin tube in this embodiment. And the opening of the upper end of pillar frame 7a, 7b is obstruct | occluded with the cap 12 in internal space K1. The opening of the upper ends of the pillar frames 7a and 7b is thus closed with the cap 12 in order to obtain one preferable acoustic effect. In order to obtain other preferable sound effects as required, the upper end openings of the pillar frames 7a and 7b can be left open without using the cap 12.

  4 (a) and 4 (b), speakers 25a and 25b are fixed to the upper part of the front core member 14. FIG. A speaker 25 c is fixed to the lower part of the front core member 14. The speakers 25a, 25b are, for example, full-range speakers, and the speaker 25c is, for example, a woofer speaker. The speaker 25a and the speaker 25b are provided separately on the left and right when viewed from the front (that is, the front side of the automobile), and the speaker 25c is provided at an intermediate position between the left and right of the speakers. In FIG. 5, the speaker drive circuit 26 is stored in the lower internal space K2.

  The front core member 14, the rear core member 15, and the internal space K1 cooperate with each other and are used as an enclosure for the speakers 25a, 25b, and 25c. The enclosure is an acoustic element for preventing sounds coming out from the rear portions of the speakers 25a, 25b, and 25c from interfering with sounds coming out from the front portions of the speakers 25a, 25b, and 25c.

  5 and 6, a mesh plate 29 is provided in front of the speakers 25a, 25b, and 25c, and a first elastic body 30 is further provided in the front thereof. The mesh plate 29 is formed in a planar mesh shape with resin, and is formed in a planar shape capable of covering the speakers 25a, 25b, and 25c as shown in FIG. The mesh plate 29 is for protecting the speakers 25a, 25b, and 25c from impact. The first elastic body 30 is formed of a material that can exhibit cushioning properties when the passenger hits his / her head and easily passes sound emitted from the speakers 25a, 25b, and 25c.

  As a material having such cushioning properties and sound passage properties, for example, a urethane pad having a hole in a portion where sound is desired to pass, or a three-dimensional fine net-like elastic material can be used. If a urethane pad with a hole is used, sound can be passed through the hole.

The three-dimensional fine net-like elastic material is an elastic material having the following properties, for example.
(1) A large number of minute internal spaces are possessed by three-dimensionally intertwining fibrous resins, and the total capacity of these internal spaces is considerably large.
(2) A pad shape, that is, a pad shape, a rug shape, or a plate shape.
(3) Although it is soft, it has a hardness that can maintain the overall shape.
(4) It has a thickness of 10 to 40 mm, preferably 20 to 40 mm in a natural state.
(5) When an adult person presses with both hands, the thickness shrinks to about 2/3 to 1/2, and when the pressing force is released, the thickness returns to its original state after a relatively short time. Return to nature.
If this three-dimensional fine net-like elastic material is used, sound can be passed by the action of a large number of minute internal spaces existing three-dimensionally inside.

  A second elastic body 31 is provided on the back surface of the rear core member 15. The second elastic body 31 does not give a metallic hard touch when touched by a person, has flexibility, but has a suitable shape retaining function, for example, urethane. It is formed of a pad material. It is preferable that the second elastic body 31 does not have a function that allows sound to pass through.

  A cover 9 formed by stitching the front skin material 10 and the rear display material 11 covers the first elastic body 30 and the second elastic body 31. In particular, the front skin material 10 covers the first elastic body 30, and the rear display material 11 covers the second elastic body 31. The front skin material 10 is made of a material that has been processed to easily pass sound. The rear display material 11 is formed of leather, leather, synthetic leather, synthetic resin that can be sewn together, or the like.

  The above-mentioned “material subjected to processing that easily passes sound” is, for example, a material containing punching leather or a three-dimensional net material. The “material including punching leather” is obtained by, for example, attaching urethane to punching leather and performing hole processing (punching processing) including urethane in order to pass sound. The “three-dimensional net material” is a net material also called a 3D net material. The three-dimensional net material is not a pad-like member such as the above-described three-dimensional fine net-like elastic material, but is a material formed in a cloth shape by intertwining fibers so as to form a large net. The three-dimensional net material can pass sound through a large mesh portion.

  Since the headrest 4 according to the present embodiment is configured as described above, when the occupant touches the back of the head with the front skin material 10 of the cover 9, the occupant can experience a preferable cushioning property. Further, by supplying desired audio signals from the drive circuit 26 to the speakers 25a, 25b, and 25c, desired audio and music can be generated from these speakers. The passenger can recognize the sound from the speakers 25a, 25b, and 25c with the back of the head placed on the cover 9.

  At this time, the front core member 14, the rear core member 15 and the internal space K1 cooperate to function as an enclosure, and supply a desired sound to the front of the speakers 25a, 25b, and 25c. In addition, since the mesh plate 29, the first elastic body 30, and the front skin material 10 are all made of a material that easily transmits sound, there is no problem in how the passenger hears the sound.

  According to the present embodiment, the speakers 25a, 25b, and 25c can be arranged at optimum positions depending on how the speakers 25a, 25b, and 25c are attached to the front core member 14. Further, the drive circuit 26 can also be arranged at an optimum position in the headrest 4.

  According to the present embodiment, since the enclosure for the speaker is formed by the front core member 14, the rear core member 15, and the internal space K1, it is not necessary to provide a dedicated enclosure other than the headrest 4. For this reason, the speaker can be assembled to a headrest having the same size as the headrest without the speaker. In addition, the appearance of the headrest is not impaired even though the speaker is attached to the headrest.

(Other embodiments)
The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments, and various modifications can be made within the scope of the invention described in the claims.
For example, in the above embodiment, the present invention is applied to a vehicle seat in which the seat back 3 and the headrest 4 are connected by the pillar frames 7a and 7b as shown in FIGS. However, instead of this, the speaker structure of the present invention may be applied to a headrest portion of a high-back seat type vehicle seat in which a seat and a headrest are integrated.

  In the above-described embodiment, the description has been made on the single seat for the driver and the passenger, but it goes without saying that the present invention can be applied to all seats of the vehicle, for example, the rear seat.

  In the above embodiment, the upper end openings of the pillar frames 7a and 7b are closed by the cap 12 in FIG. 5, but the upper end openings of the pillar frames 7a and 7b may be left open without using the cap 12. good.

  In the above embodiment, the mesh plate 29 for protecting the speakers 25a, 25b, and 25c is provided between the front core member 14 and the first elastic body 30 in FIGS. However, since it is considered that the first elastic body 30 itself can exhibit the protection function of the speaker, the mesh plate 29 may not be used in some cases.

  In the above embodiment, an enclosure for a speaker is formed by the front core member 14, the rear core member 15, and the internal space K1 in FIGS. However, the minimum required enclosure is the front core member 14 that fixes and supports the speakers 25a, 25b, and 25c. Even when the inner space K1 is small or the rear core member 15 is not provided, An enclosure may be formed.

  In the above embodiment, three speakers 25a, 25b, and 25c are used as a plurality of speakers. However, the number of speakers is not limited to three. Moreover, although the example which outputs an audio | voice toward the front was shown in said embodiment, it is not restricted to this, It is good also as a structure which can output an audio | voice toward back or another direction.

  In the above embodiment, one common internal space K1 is assigned to a plurality of speakers. However, by providing a partition member in the internal space K1, one internal space can be assigned to each speaker.

  In the above embodiment, an automobile is exemplified as the vehicle. However, as the vehicle, any vehicle for carrying a person other than an automobile can be considered. Trains are also included in such vehicles.

  1. 1. Vehicle seat, Seat cushion, 3. Seat back, 4. Headrest, 6; Core material, 7a, 7b. Pillar frame, 8. 8. headrest frame; Cover, 10. 10. Front skin material, Rear display material, 12. Cap, 14. Front core, 14a. Fitting protrusion, 14b. 15. fitting recess, Rear core, 15a. Fitting protrusion, 15b. Fitting recess, 16a. Upper frame, 16b. Lower frame, 17. Sealing material, 19a, 19b, 19c. Internal protrusion, 20a, 20b, 20c, 20d. Internal protrusions 22a, 22b. Screws, 25a, 25b, 25c. Speaker, 26. Speaker drive circuit, 29. Mesh plate, 30. First elastic body, 31. Second elastic body, 101. Speaker, 102. Plate, 103. Box, 104. Through hole, A. Cut surface, B. Cut surface, K1. Upper internal space, K2. Lower internal space

Claims (14)

A core material,
An elastic body that covers the surface of the core material and exhibits cushioning when the head hits;
A speaker that produces sound;
In a headrest having the core material, the elastic body, and a skin material surrounding the speaker,
The headrest is characterized in that the core material is an enclosure for a speaker.   The headrest according to claim 1, wherein the speaker is attached to the core member. The speaker is plural,
Those speakers are attached to a common core,
The headrest according to claim 1, wherein the common core material is an enclosure common to a plurality of speakers. The core material is formed by combining a front core material that is a portion close to the head and a rear core material that is a portion far from the head,
A space is formed between the front core material and the rear core material,
The headrest according to any one of claims 1 to 3, wherein the speaker is attached to the front core member. The space is divided into a plurality of spaces;
One of the plurality of spaces is used for the enclosure;
5. The headrest according to claim 4, wherein the other one of the plurality of spaces is used for storing a driving circuit for driving the speaker. It has a pillar frame that is provided over the inside and outside of the core and the part located outside is a part that is attached to the seat back,
The headrest according to claim 1, wherein the core member is attached to the pillar frame.   The headrest according to any one of claims 1 to 6, wherein the core functions as a sealed enclosure by forming a space sealed by the core. A seat cushion, which is the part where the passenger sits,
A seat back that is the part on which the passenger rests,
A headrest that is attached to the seat back and that is a portion against which the head of the passenger hits;
In a vehicle seat having
The vehicle head, wherein the headrest is the headrest according to any one of claims 1 to 7. A core material,
An elastic body that covers the surface of the core material and exhibits cushioning when the head hits;
A speaker that produces sound;
A seat back that is the part on which the passenger rests,
A skin material surrounding the core material, the elastic body, the speaker and the seat back;
In a headrest having
The headrest-integrated vehicle seat, wherein the core member is an enclosure for a speaker.   The headrest-integrated vehicle seat according to claim 9, wherein the speaker is attached to the core member. The speaker is plural,
Those speakers are attached to a common core,
11. The headrest-integrated vehicle seat according to claim 9, wherein the common core member is an enclosure common to a plurality of speakers. The core material is formed by combining a front core material that is a portion close to the head and a rear core material that is a portion far from the head,
A space is formed between the front core material and the rear core material,
The headrest-integrated vehicle seat according to any one of claims 9 to 11, wherein the speaker is attached to the front core member. The space is divided into a plurality of spaces;
One of the plurality of spaces is used for the enclosure;
13. The headrest-integrated vehicle seat according to claim 12, wherein the other one of the plurality of spaces is used for storing a drive circuit for driving the speaker.   The headrest-integrated vehicle seat according to any one of claims 1 to 6, wherein the core member functions as a sealed enclosure by forming a space sealed by the core member. .

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