JP2005058287A - Headrest with loudspeakers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headrest loudspeaker, having high sound transmissibility to seating person's ears from a loudspeaker 3, even if the side parts are positioned at positions which will not obstruct the visual field of the seating person at use and is capable of supporting the head part of the occupant, that is to say, the side parts are positioned in a state of forming obtuse angles relative to the headrest part. <P>SOLUTION: A headrest body 1 is provided with the side parts 2 incorporating loudspeakers 3, respectively to the left and to the right. When the side parts 2 turn horizontally to the seating person's side relative to the headrest body 1, the loudspeakers 3 are so constituted as to turn to the seating person's side relative to the front surfaces of the side parts 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a headrest with a speaker in a seat.
[0002]
[Prior art]
For example, a vehicle headrest as shown in Patent Document 1 below is known. In this technology, the left and right side surfaces of the headrest body are provided with side portions to which the speaker is fixed so that the angle can be changed, and the side portions are arranged linearly with the headrest body and the headrest body. It has a mechanism that makes it possible to change the angle with respect to a position arranged substantially vertically. In general, the side portion is arranged in a straight line with the headrest body, and when the speaker is used to enjoy music or the like, the side portion is positioned substantially perpendicular to the headrest body.
[0003]
[Patent Document 1]
JP 2001-112572 A
[0004]
[Problems to be solved by the invention]
In the prior art, since the speaker is fixed to the side portion, when the side portion is positioned substantially perpendicular to the headrest body in order to direct the speaker to the seated person's ear, the side portion is the head portion. Since it will be located in the immediate vicinity, the right and left visual fields of the seated person will be hindered. On the other hand, in order to support the occupant's head without obstructing the occupant's field of vision, when the side portion is positioned at an obtuse angle with respect to the headrest body, the speaker faces away from the seated person's ear. Therefore, the sound transmission from the speaker to the seated person's ear is impaired.
[0005]
OBJECT OF THE INVENTION
Therefore, the present invention is a state in which the side part is located at a position where the head of the occupant can be supported without obstructing the right and left visual fields of the seated person, that is, the side part forms an obtuse angle with respect to the headrest body. An object of the present invention is to provide a headrest with a speaker that does not impair the sound transmission performance from the speaker to the ear of the seated person even when it is located in a state.
[0006]
[Means for solving the problems and effects]
In order to achieve the above object, the present invention described in claim 1 includes a headrest body that abuts against a head of a seated person in the headrest, and a horizontal rotation with respect to the headrest body in the left-right direction of the headrest body. In a headrest with a speaker provided with a side part that is connected to the side part and provided with a speaker on the side part, the speaker is fixed to the side part and is centered on a rotation axis that extends in a vertical direction. On the other hand, it is characterized by being horizontally rotatable.
[0007]
Thereby, a seated person is located in a position where the side portion can support the head of the occupant without hindering the sight of the occupant, that is, the side portion is in an obtuse angle with respect to the headrest body. However, since the speaker can be directed toward the seated person's ear in accordance with the angle, sound transmission from the speaker to the seated person's ear can be improved.
[0008]
Next, in order to achieve the object, the present invention described in claim 2 is the speaker with a headrest according to claim 1, wherein the speaker is connected to the side portion in conjunction with the horizontal rotation of the side portion with respect to the headrest body. It rotates horizontally with respect to.
[0009]
Thereby, since the horizontal rotation of the speaker is automatically performed by the rotation of the side portion, for example, the operability is improved as compared with the case where the rotation of the side portion 2 and the rotation operation of the speaker 3 are performed separately. be able to.
[0010]
Further, according to a third aspect of the present invention, in the speaker with a headrest according to the second aspect, an end of the speaker is connected to the headrest body.
[0011]
Thereby, the interlocking of the horizontal rotation of the side part and the speaker can be achieved by a simple mechanism.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a perspective view of a headrest with a speaker according to the present invention. The headrest with a speaker is fixed to the upper part of the backrest of the vehicle seat, and the headrest body 1 that directly contacts the head of the seated person and supports the head of the seated person, and the both sides of the headrest body 1. It comprises a side part 2 fixed so as to be pivotable to a horizontal seated person side, and a speaker 3 fixed to the front surface of each side part 2. 1A shows a state in which the front surface of the side portion 2 is substantially flush with the front surface of the headrest body 1 (hereinafter referred to as a normal state), and FIG. 1 shows an obtuse angle with respect to the front surface of 1 (hereinafter referred to as a use state).
[0014]
The headrest body 1 is mainly composed of a urethane pad, and the urethane pad is configured to be supported by the frame 4 while covering the frame 4. The frame 4 has a rectangular parallelepiped shape having a bottom surface, and the top surface thereof is closed by an upper lid (not shown) that is a separate member from the frame 4. Various mechanisms for rotating side portions 2 described later are built in the frame 4, and the outer surface of the urethane pad is covered with a skin 16.
[0015]
FIG. 2 shows the internal mechanism of the headrest body 1 and the side part 2. FIG. 2 (a) shows a normal state, and FIG. 2 (b) shows a use state. In both (a) and (b), the upper part in the figure is the front of the headrest. And FIG. 3 is the figure which expanded the side part in the state of FIG.2 (b). This will be described in detail below with reference to FIGS.
[0016]
First, the headrest body 1 is connected to the backrest of the seat behind the headrest body 1 by a stay 4a fixed to the frame 4 described above. In front of the headrest body 1, a screw 7 whose left and right screw centers are symmetrical at the center in the left-right direction is pivotally supported by a screw bracket 4 d fixed to the inside of the left and right wall surfaces of the frame 4. A first motor 5 is fixed between the stay 4 a and the screw 7 by a first motor bracket 4 b formed as a part of the frame 4. The gear 5a of the first motor 5 and the screw 7 are engaged with each other. The screw 7 is inserted with a nut 6 that slides in the left-right direction as the screw 7 rotates. Further, the nut 6 is positioned in parallel with the screw 7 and extends to the left and right outer sides of the screw 7. 8 is fixed. In addition, plate-like guide members 4e that are positioned inside the left and right wall surfaces of the frame 4 with the contact member 8 interposed therebetween and that are guided when the contact member slides in the left-right direction are fixed. Thus, due to the contact between the guide member 4e and the contact member 8, the nut 6 does not rotate with the screw 7 when the screw 7 rotates, but only slides in the left-right direction. Note that the entire internal mechanism including the frame 4 is covered with a semi-rigid urethane pad (a hatched portion in FIG. 2) as with a normal headrest, and the outer side is covered with a skin 16.
[0017]
The skin 16 is not only the headrest main body 1 but also includes the side portions 2 fixed on both sides of the headrest main body 1 described above, and covers the entire headrest so as to be in close contact with the urethane pad. By opening and closing the fasteners that are not used, the headrest main body 1 and the side part 2 can be attached and detached. However, the front and rear surfaces of the connecting portion of the headrest main body 1 and the side portion 2 are not brought into close contact with the outer skin 16, and a gap is provided between them, so that the side portion 2 rotates horizontally with respect to the headrest main body 1. In addition, the rotation is not hindered.
[0018]
Also, the frame 4 is provided with a pair of side brackets 4c extending in the left and right outer directions on the left and right sides, and a pivot shaft 9a of a support member 9 is fixed to the side brackets 4c. It is always urged by a second spring (not shown) in the normal position, that is, in the direction of arrow e in FIG.
[0019]
The side portion 2 is supported by the support member 9. This support member 9 has a rectangular parallelepiped shape having a bottom surface and an upper surface being an opening, and is made of resin. Inside the support member 9, a shaft support member 3 a that extends upward from the bottom surface of the support member 9 to pivotally support the speaker 3 at a substantially central position in the left-right direction and extends forward from the rear surface of the support member 9. A bracket 9c for fixing the second motor 10 is provided (see FIG. 3). Further, an opening is provided on the front surface of the support member 9 so as not to contact the support member 9 when the speaker 3 rotates.
[0020]
Further, the speaker 3 installed in the support member 9 is centered on the above-described shaft support member 3a, and the direction in which the front surface of the speaker 3 is generally flush with the front surface of the side portion 2 by a third spring (not shown) (see FIG. 3 in the direction of arrow h).
[0021]
As with the headrest body 1 described above, the side support 2 also covers the entire support member 9 with a urethane pad (shaded portion in FIG. 2), and further covers the outer side with the above-described skin 16.
[0022]
The headrest with a speaker according to the present invention configured as described above is in a normal state as shown in FIG. 2A when there is no seated person. When a seated person sits on the seat from such a state, a sensor provided on the back of the seat senses it, and an electrical signal is generated from the sensor, and the first motor 5 is rotated for a certain period of time.
When the first motor 5 rotates, the screw 7 connected via the gear 5a rotates. As a result, the nut 6 fitted to the screw 7 moves toward the left and right outer sides of the headrest body. Accordingly, the abutting member 8 fixed to the nut 6 slides in the direction of the left and right outer sides of the headrest body while contacting the guide member 4e. Thereafter, the abutting member 8 abuts against the abutted portion 9b of the support member 9, and the abutted portion 9b is pushed outward of the headrest as the abutting member 8 slides.
Accordingly, the support member 9 rotates horizontally in the direction of the arrow f about the rotation shaft 9a against the second spring described above. As a result, the side part 2 rotates horizontally to the seated person side with respect to the headrest body 1 (see FIG. 3).
[0023]
The optimum turning angle of the side part 2 varies depending on the length of the side part 2 and the size of the head of the occupant, but in this embodiment, the horizontal length of the front surface of the side part 2 is the headrest. It is about ½ of the horizontal length of the front surface of the main body 1 and the rotation angle is about 45 °.
[0024]
Further, in the present embodiment, the seated person is detected and automatically rotated by the sensor. However, it is also conceivable that the seated person can be arbitrarily rotated to a desired angle by an operation switch (not shown).
[0025]
Next, the rotation mechanism of the speaker 3 will be described. The second motor 10 is fixed to the bracket 9 c described above behind the speaker 3 described above, and the gear box 12 is bonded to the inside of the support member 9. The slide pin 11 is connected via the gear box 12 so that the slide pin 11 slides in the forward vertical direction (in the direction of arrow i in FIG. 3) with respect to the second motor 10 by the rotation of the second motor 10. The slide pin 11 is usually accommodated in the gear box 12 almost entirely. Then, as the second motor 10 rotates, the slide pin 11 slides from the accommodation state of the gear box 12. At that time, since the speaker 3 is positioned in the sliding direction of the slide pin 11, when the slide pin 11 slides, the slide pin 11 comes into contact with the rear portion of the speaker 3 and further slides. As a result, the speaker 3 rotates horizontally to the seated person side (in the direction of arrow g in FIG. 3) around the rotation axis against the bias of the third spring described above.
[0026]
The rotation of the motor 10 may be automatically rotated when the side portion 2 is rotated with respect to the headrest body 1, or an operation (not shown) separate from the rotation of the side portion 2. The seat occupant may optionally rotate the switch. In this case, there is an advantage that the rotation angle of the speaker 3 can be adjusted to an optimum position according to the size of the head of the seated person.
[0027]
Next, when the occupant leaves the seat, a sensor provided on the back of the seat senses it, and an electrical signal is emitted from the sensor, and the nut 6 moves toward the inside of the headrest body 1 by the rotation of the screw 7. The first motor 5 rotates for a certain time so as to move. As a result, the contact member 8 fixed to the nut 6 is also guided by the guide member 4e and slides in a direction away from the contacted portion 9b of the support member 9 (inward direction of the headrest body 1). By the biasing of the second spring, the support member 9 is rotated from the use state to the normal state (in the direction of arrow e in FIG. 3), and the side portion 2 returns to the normal state.
[0028]
At that time, the second motor 10 rotates to slide the slide pin 11 in a direction (arrow j direction in FIG. 3) to be accommodated in the gear box 12. As a result, the slide pin 11 is separated from the speaker 3, and the speaker 3 is rotated so as to be in a normal state by the above-described biasing of the third spring (in the direction of arrow h in FIG. 3).
[0029]
In addition, the mechanism of the side part 2 is provided symmetrically with respect to the headrest body 1 on both the left and right sides of the headrest body 1. Therefore, as the screw 7 rotates, the left and right side parts 2 are simultaneously rotated symmetrically.
[0030]
Next, a second embodiment of the present invention will be described in detail. FIG. 4 illustrates a second embodiment of the present invention. FIG. 4 (a) shows a normal state and FIG. 4 (b) shows a use state. In both (a) and (b), the upper part in the figure is the front of the headrest. And FIG. 5 is the figure which expanded one side part in the state of FIG.4 (b). This will be described in detail below with reference to FIGS.
[0031]
In the second embodiment of the headrest with a speaker according to the present invention, the mechanism inside the headrest body 1 is the same as the first embodiment described above, and only the mechanism of the side portion 2 is different. This side part 2 supports the urethane pad which forms the side part 2 with the support member 13 like 1st Embodiment mentioned above. The support member 13 is in the shape of a rectangular parallelepiped having an opening at the top and a bottom surface, as in the first embodiment. However, as shown in FIG. A contact portion 13 b is formed extending rearward from the support member 13. Then, when the speaker 3 provided inside the support member 13 rotates, the speaker 3 is prevented from coming into contact with the front surface of the support member 13 and sound generated from the speaker 3 being blocked by the front surface of the support member 13. Therefore, an opening is provided on the front surface of the support member. In addition, an opening is provided on the rear surface of the support member 13 so as not to contact a first spring 15 described later.
[0032]
In addition, the speaker 3 built in the side portion 2 is rotatably fixed to a shaft support member 3 a fixed to the lower surface of the support member 13 at the front right end portion of the lower surface of the speaker 3 in the drawing. Therefore, the speaker 3 can be rotated around the front right end in the drawing, and is normally rotated from the use state to the normal state by the third spring described in the first embodiment ( It is biased in the direction of arrow h in FIG.
[0033]
Furthermore, in the second embodiment, the fixing member 14 is fixed to the outside of the wall surface of the frame 4, and one end of the first spring 15 is rotatably fixed to the tip of the fixing member 14. . The other end of the first spring 15 is fixed to the outside of the side wall surface of the headrest body 1 of the speaker 3. The fixing position of the first spring 15 and the speaker 3 may be any position as long as it is outside the side wall surface of the headrest body 1 in the speaker 3, but the rotation angle of the speaker 3 can be increased as the position is forward. .
[0034]
The fixing member 14 is provided with a recess in a part of the urethane pad so that it does not come into contact with the urethane pad (shaded portion in the figure) in use. 14 and the spring 15 and its connecting portion are configured not to contact the urethane pad.
[0035]
Next, the rotation operation of the side part 2 in the second embodiment will be described.
[0036]
In the second embodiment, as in the first embodiment, when the seating of the seated person is detected and the first motor 5 rotates, the abutting member 8 slides outward in the left-right direction and is covered. It abuts against the abutment portion 13b and pushes it outward with respect to the headrest body 1. As a result, the support member 13 horizontally rotates toward the seated person with the rotation shaft 13a as the rotation center.
[0037]
And if the side part 2 rotates with respect to the headrest main body 1 by rotation of the support member 13, the rotational axis of the speaker 3 currently fixed to the side part 2 will move to a position forward with it. Moreover, the space | interval of the speaker 3 and the fixing member 14 will spread. As a result, the first spring 15 connecting the speaker 3 and the fixing member 14 expands with the rotation of the side portion 2. As the extension increases, the tension applied from the first spring 15 to the speaker 3 increases.
Eventually, when the tension exceeds the urging force of the third spring that urges the speaker 3 in the normal rotation direction, the speaker 3 rotates from the normal state to the use state (in FIG. 5). (g direction) starts to rotate. Then, when the side portion 2 is rotated to be in a use state and the rotation is stopped, the extended first spring 15 is positioned perpendicular to the fixing member 14, and the speaker 3 is moved from the normal state. It will be in the state rotated.
[0038]
Next, when the seated person leaves the seat, the seated person is detected as in the first embodiment, and the first motor 5 rotates, so that the contact member 8 moves away from the contacted portion 13b. Since the guide member 4e guides and slides in the direction (inner direction of the headrest body 1), the support member 13 is moved from the use state to the normal state by the bias of the second spring described above (the arrow in FIG. 5). e) and the side part 2 returns to the normal state.
[0039]
At that time, since the position of the speaker 3 approaches the fixing member 14, the tension of the first spring with respect to the speaker 3 is lost. Therefore, the speaker 3 is rotated in the direction h in FIG. 5 by the bias of the third spring described above and returns to the normal state.
[0040]
As in the first embodiment, in the second embodiment, side portions 2 having the same mechanism are provided symmetrically on both sides of the headrest body 1, and the left and right side portions are rotated along with the rotation of the screw 7. 2 is a mechanism that horizontally rotates simultaneously symmetrically.
[0041]
As mentioned above, although embodiment was shown about the headrest with a speaker in this invention, this invention is not limited to this.
[0042]
For example, in the embodiment of the present invention, when the presence or absence of a seated person is detected by a sensor installed on the backrest of the seat and it is determined that there is a seated person, the side part 2 is automatically attached to the headrest body 1 by an electrical signal. Rotate in the horizontal direction of the seated person. However, instead of providing a sensor, for example, a switch may be provided on an interior wall or the like, and a seated person may arbitrarily rotate the side portion 2 by operating the switch.
[0043]
In the embodiment of the present invention, the headrest used for the vehicle seat is shown. However, the present invention is not limited to this and can be used for any vehicle, and also for a normal fixed seat used in a movie theater or the like. Can be applied.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a normal state (a) of a headrest and a use state (b) in an embodiment of the present invention. FIG. 2 shows a normal state (a) of a headrest in a first embodiment of the present invention. FIG. 3 is a cross-sectional plan view showing the internal structure of the use state (b). FIG. 3 is a cross-sectional plan view showing the internal state of the side part 2 in the use state in the first embodiment of the present invention. FIG. 5 is a plan sectional view showing the internal structure of the headrest in the normal state (a) and the use state (b) in the second embodiment of the present invention. FIG. 5 and FIG. 3 in the second embodiment of the present invention. Similar figure 【Explanation of symbols】
1 headrest body 2 side 3 speaker 4 frame 5 first motor 6 nut 7 screw 8 contact member 9 support member 10 second motor 11 slide member 12 gear box 13 support member 14 fixing member 15 first spring 16 skin

Claims (3)

A headrest body that contacts the head of a seated person in the headrest, and a side portion that is connected to the headrest body so as to be able to rotate in the horizontal direction are provided on the left and right sides of the headrest body. A headrest with a speaker, comprising: a headrest with a speaker, wherein the speaker is horizontally rotatable with respect to the side portion about a rotation axis that is fixed to the side portion and extends in a vertical direction. . The headrest with a speaker according to claim 1, wherein the speaker is horizontally rotated with respect to the side portion in conjunction with the horizontal rotation of the side portion with respect to the headrest body. The headrest with a speaker according to claim 2, wherein an end of the speaker is connected to the headrest body.

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