JP2004330953A - Arm rest device with built-in speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an arm rest device with a built-in speaker capable of improving sound effects. <P>SOLUTION: In the arm rest device 10, a speaker 50 is mounted in a hollow box casing 20A constituting the frame part of a retractable arm rest 20. A sound emission through port 40 emitting a sound wave into an in-car space, which is generated by the back surface of a diaphragm 51 of the speaker 50 when the arm rest 20 is moved to a use position, and a sound emission port 60 for a stand-by state of the arm rest emitting the sound wave into the in-car space, which is generated by the back surface of the diaphragm 51 of the speaker 50 when the arm rest 20 is moved to a stand-by position are separately provided in the casing 20A. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an armrest device with a built-in speaker.
[0002]
[Prior art]
In general, an armrest provided on a rear seat of a vehicle is rotatably supported at a lower portion by a seatback, and is used in a position where the armrest is tilted substantially horizontally above a seat cushion, and when the armrest is flipped upward and inside a recess of the seatback. It is of a storage type that can be selectively switched to a storage position (standby position) that fits into.
[0003]
Conventionally, a speaker unit such as a subwoofer is built in such a retractable armrest (for example, see Patent Document 1).
As shown in FIG. 1, when the speaker unit 7 is built in the retractable armrest 1, it is not necessary to secure a special speaker installation space in the vehicle as in a case where the speaker unit is installed in a vehicle such as a trunk room or a rear tray. Since it is good, the space inside the vehicle can be effectively used. Further, for example, there is a possibility that bass reproduction performance with superior sound quality can be obtained as compared with a case where a subwoofer is installed in a trunk room.
[0004]
However, when the armrest 1 is used by switching between the use position and the standby position, a device is required to effectively make the sound of the speaker unit 7 sound inside the vehicle.
Therefore, according to the technology described in Patent Document 1, as shown in FIG. 1, an acoustic outlet (sound emission port) 2 connected to the bass reflex space 6 at the front end of the armrest 1 (the upper end when retracted). And a notch 5 at the upper end of the storage recess 4 of the seat back 3 for storing the armrest 1 so as not to block the sound outlet 2 when the armrest is stored. In both cases, when not in use, it is devised so that a reasonable sound effect can be exhibited.
[0005]
[Patent Document 1]
JP-A-5-276588 [0006]
[Problems to be solved by the invention]
However, as described in Patent Literature 1 described above, the structure that emits sound from the same sound outlet 2 when the armrest is used and when it is not used has a large difference in the sound output location depending on the posture of the armrest 1, so that a good sound effect is obtained. May not be able to demonstrate.
As an example of the problem to be solved by the present invention, there is a problem that a high-quality sound effect generated in the above-described related art cannot be exhibited.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a speaker-equipped armrest in which a speaker unit is mounted inside an armrest movably provided between a standby position set on a seat bag and a use position set above a seat cushion. A device,
An armrest-use sound output port for radiating sound waves generated by a rear surface of the diaphragm of the speaker unit to a vehicle interior space when the armrest is moved to a use position, and the speaker unit when the armrest is moved to a standby position. The armrest device with a built-in speaker is characterized in that the armrest is provided with an armrest standby sound output port for radiating sound waves generated by the rear surface of the diaphragm into the vehicle interior space.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of an armrest device with a built-in speaker according to the present invention will be described.
In the armrest device with a built-in speaker of the present invention, a speaker unit is mounted inside an armrest provided movably between a standby position set on a seat bag and a use position set above a seat cushion. The armrest has an armrest-use sound output port that radiates sound waves generated by the rear surface of the diaphragm of the speaker unit when the armrest is moved to the use position, and a sound emission port for use when the armrest is moved to the standby position. An armrest standby sound output port for radiating sound waves generated by the rear surface of the diaphragm of the speaker unit into the vehicle interior space is provided separately.
[0009]
That is, by separately providing the armrest use sound emission opening and the armrest standby sound emission opening in the armrest, a dedicated sound emission is provided when the armrest is used and when the armrest is not used (standby). Sound can be emitted from the mouth, and a good sound effect can be obtained.
[0010]
Furthermore, a switching mechanism that switches the sound wave guide destination generated by the rear surface of the diaphragm of the speaker unit to the sound output opening for use of the armrest when the armrest is used and to the sound output opening for the armrest standby when the armrest is standby, By being provided in the armrest, unnecessary sound leakage can be prevented, and a good acoustic effect can be obtained.
[0011]
Further, since the speaker unit is a speaker unit for reproducing low-pitched sound, high-quality low-pitched sound can be resonated in the interior of the vehicle above the seat cushion. It can also be expected to have a body sonic effect.
[0012]
Further, inside the housing of the armrest, there is formed an internal space for guiding sound waves emitted from the rear surface of the diaphragm of the speaker unit to the sound emission opening for use of the armrest and the sound emission opening for standby of the armrest. When the switching mechanism provided in the internal space moves the armrest to the use position, communication between the internal space and the armrest standby sound emission opening is interrupted, and the armrest is moved to the standby position. Sometimes, the communication between the internal space and the sound output opening for use of the armrest is cut off, so that the sound emitted from the rear surface of the diaphragm of the speaker unit is effective inside the vehicle when the armrest is used and when it is not used. Radiation.
[0013]
Further, since the sound output opening for use of the armrest is formed of a through sound output opening penetrating from one outer surface to the other outer surface of the housing, a good acoustic effect in the vehicle can be obtained. In addition, it is expected that the bass sound emitted from the through-type sound emission opening penetrating to the left and right will exert a body sonic effect on the occupants seated on the left and right sides of the armrest device with a built-in speaker.
[0014]
In addition, the housing is formed from an outer shell wall forming an acoustic space therein and a peripheral edge of an opening formed in one side plate of the outer shell wall to form the through-type sound emission opening from the other side plate. A cylindrical wall extending around the periphery of the formed opening; an annular space formed around the cylindrical wall by providing the cylindrical wall; and a partition wall that circumferentially blocks the annular space. The shell wall is provided with a direct sound output port for emitting sound waves emitted from the front surface of the diaphragm of the speaker unit into the vehicle interior space, and the annular space from the rear surface of the speaker diaphragm to the partition wall is formed by the shell space. The cylindrical wall in the vicinity of the partition wall is provided with an opening that communicates the internal space with the through-type sound emission port, and an outer shell wall of the housing serving as a seat back surface during armrest standby is provided. , Communicating with an intermediate portion of the internal space The armrest standby sound output port is provided, and in the middle portion of the internal space, the armrest standby sound output port is closed when the armrest is used, and the armrest standby sound output port is opened during the armrest standby. By providing the switching mechanism for interrupting the communication of the internal space from its position to the downstream side from the position, the armrest device with a built-in speaker can efficiently exhibit high-quality sound effects in a compact housing. it can.
[0015]
【Example】
Hereinafter, an armrest device with a built-in speaker according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
2 is a side view and a plan view of an armrest device with a built-in speaker according to an embodiment of the present invention. FIG. 3 is a partial cross-sectional view showing a state where the armrest device with a built-in speaker shown in FIG. 2 is set to a use position. FIG. 3 is a partial cross-sectional view illustrating a state where the armrest device with a built-in speaker illustrated in FIG. 2 is set to a standby position.
[0016]
In this embodiment shown in FIG. 2, the reference numeral 100 denotes a rear seat of a vehicle, and the rear seat 100 includes a seat cushion 101 and a seat back 102.
The speaker-equipped armrest device 10 according to the present embodiment is set at a standby position (see FIG. 4) in a storage recess 103 provided at a widthwise center of a seat back 102 of a rear seat 100 of a vehicle, and above a seat cushion 101. It is provided rotatably between the used position (the position shown in FIG. 2). The pivot shaft 110 is set near the lower end of the seat back 102, and the armrest device 10 with built-in speaker can pivot vertically (upward and downward) on the pivot shaft 110 set on the base end side. Can be overturned).
[0017]
The armrest device 10 with a built-in speaker has a speaker unit (hereinafter, simply referred to as a “speaker”) 50 attached to a hollow box-shaped housing 20A that forms a frame portion of a retractable armrest 20.
The housing 20A has a through-type sound output port which is a sound output port at the time of using the armrest, which radiates a sound wave generated by the rear surface of the diaphragm 51 of the speaker 50 to the interior space when the armrest 20 is moved to a use position. 40 and an armrest standby sound output port 60 that emits sound waves generated by the rear surface of the diaphragm 51 of the speaker 50 to the vehicle interior space when the armrest 20 is moved to the standby position are separately provided. .
[0018]
As shown in FIGS. 3 and 4, an internal space 30 for guiding sound waves emitted from the rear surface of the diaphragm 51 of the speaker 50 to the outside is formed inside the housing 20 </ b> A of the armrest 20. Further, the housing 20A is formed with a circular through-hole sound emission port 40 penetrating from one outer surface to the other outer surface in the left-right direction.
Therefore, sound waves emitted from the rear surface of the diaphragm 51 are communicated through the internal space 30 to the through-type sound emission port 40 penetrating to the left and right of the sound space, so that the sound waves propagating through the internal space 30 are transmitted through the internal space 30. The sound emission port 40 is radiated toward the vehicle interior space. The through sound emission port 40 functions as a port of a bassless speaker.
[0019]
The speaker 50 in this case is a woofer or subwoofer for reproducing low-pitched sound. An acoustic cable (not shown) extends from the speaker 50 and can be connected to a cable on the vehicle side, for example, by a connector.
The housing 20A of the armrest 20 has an outer shell wall 21 that forms an acoustic space inside. Although the outer shell wall 21 is generally rounded, it has a substantially rectangular parallelepiped shape having upper and lower walls 21a and 21b, front and rear walls 21c and 21d, and left and right side walls (side plates) 21e and 21f. .
[0020]
In order to form the through-hole 40, the cylindrical wall 22 extends from the periphery of the opening formed on one side wall 21e of the outer shell wall 21 to the periphery of the opening formed on the other side wall 21f. The cylindrical wall 22 is provided to form an annular space 23 around the cylindrical wall 22.
[0021]
The annular space 23 is blocked in the circumferential direction by a partition wall 24. As shown in FIG. 3, the partition wall 24 is disposed substantially vertically from the upper front part of the cylindrical wall 22 forming the through-type sound emission port 40 toward the outer shell wall 21. A speaker mounting plate 25 is provided substantially horizontally so as to cross the annular space 23.
The speaker 50 is attached to the opening 26 formed in the speaker attachment plate 25 with the front surface of the diaphragm 51 facing upward.
[0022]
In addition, a direct sound opening 27 for emitting sound waves emitted from the front surface of the diaphragm 51 of the speaker 50 to the interior of the vehicle is provided at a front portion of the upper wall 21a of the outer shell wall 21. The direct sound outlet 27 is covered with a perforated wall, a mesh plate, or the like that can exhibit strength as an armrest without hindering the emission of sound waves.
[0023]
By mounting the speaker 50 on the speaker mounting plate 25 provided on the front side of the partition wall 24 as described above, the annular space 23 from the rear surface of the diaphragm 51 of the speaker 50 to the partition wall 24 has the vibration of the speaker 50. The internal space 30 guides sound waves emitted from the rear surface of the plate 51 to the outside.
Further, an opening 28 is provided in the cylindrical wall 22 at a position close to the partition wall 24 to allow the internal space 30 to communicate with the through-type sound emission port 40.
[0024]
The lower wall 21b of the outer shell wall 21 serving as a seat back surface at the time of armrest standby is provided with the armrest standby sound output port 60 communicating with an intermediate portion of the internal space 30. Is provided with a switching mechanism 80 for closing the armrest standby sound output port 60 when the armrest is used.
[0025]
The switching mechanism 80 opens the armrest standby sound output port 60 when the armrest 20 is raised and moved to the standby position, as shown in FIG. An opening / closing lid 82 is provided to block communication of the internal space 30 to the downstream side.
[0026]
Therefore, the switching mechanism 80 switches the guidance destination of the sound wave generated by the rear surface of the diaphragm 51 of the speaker 50 to the through-type sound emission port 40 when the armrest is used, and the armrest standby sound emission port 60 when the armrest is in standby. You can switch to Thus, the armrest standby sound output port 60 functions as a port of the bass reflex speaker. The switching mechanism 80 is not limited to the configuration based on the action of the balance weight 81, and may be configured to switch the opening / closing lid 82 by a driving device such as a motor.
[0027]
Next, the operation of the above-described armrest device 10 with a built-in speaker will be described.
First, when the armrest device 10 with built-in speaker is used as the armrest 20, the armrest device 10 is tilted substantially horizontally to a use position above the seat cushion 101 as shown in FIG.
Then, by the operation of the switching mechanism 80, the armrest standby sound output port 60 is closed. When the speaker 50 is sounded in this state, sound waves on the front surface of the diaphragm 51 are radiated upward from the direct sound outlet 27 on the upper surface into the vehicle interior space, and sound waves on the rear surface of the diaphragm 51 travel through the internal space 30. The light propagates through the opening 28 of the cylindrical wall 22 to the through-type sound emission port 40 and is radiated in the vehicle interior space in the left-right direction.
[0028]
In this manner, the bass is radiated from the penetrating sound emission openings 40 penetrating to the left and right of the speaker-equipped armrest device 10, so that bass can be supplied to the occupant seated in the rear seat 100 and the bodily sensation sound effect is exhibited. You. Moreover, at this time, since the armrest standby sound output port 60 is closed, there is no unnecessary sound leakage, and a good sound effect can be exhibited.
[0029]
When the speaker-equipped armrest device 10 is not used as the armrest 20, it is stored at a standby position in the storage recess 103 of the seatback 102 as shown in FIG.
Then, by the operation of the switching mechanism 80, the sound output port 60 for standby at armrest is opened and the communication of the internal space 30 from the position to the downstream side is interrupted. Is blocked, and the armrest standby sound output port 60 is opened. When the speaker 50 sounds in this state, sound waves on the rear surface of the diaphragm 51 propagate through the internal space 30 and are radiated from the armrest standby sound emission opening 60 to the vehicle interior space.
[0030]
The sound wave on the front surface of the diaphragm 51 is radiated directly from the sound output port 27 to the rear of the seat back 102. However, since the sound is low-directional, the sound effect is small since the sound is omnidirectional.
Therefore, leakage of useless sound from the through-type sound output port 40 of the armrest device 10 with a built-in speaker is restricted, and sound is output only from the sound output port 60 for standby armrest, thereby exhibiting a good acoustic effect. Can be.
[0031]
That is, in the armrest device 10 with a built-in speaker according to the present embodiment, the partition wall 24 is disposed substantially vertically from the front upper portion of the cylindrical wall 22 forming the through-type sound output port 40 toward the outer shell wall 21. A speaker mounting plate 25 is provided substantially horizontally across the annular space 23 in front of the speaker 50, and a speaker 50 is mounted in an opening 26 formed in the speaker mounting plate 25 with the front surface of the diaphragm 51 facing upward. Since the direct sound outlet 27 formed in the outer shell wall 21 is disposed on the upper surface of the speaker 50, high-quality sound can be transmitted to the entire area of the vehicle interior space above the seat cushion 101.
[0032]
In the armrest device 10 with a built-in speaker according to the present embodiment, the armrest standby sound output port 60 is closed when the armrest is used, and the flow of sound waves to the penetration type sound output port 40 is shut off when the armrest is not used. Although the switching mechanism 80 is used, the present invention is not limited to this.
[0033]
For example, the opening at both ends of the through-type sound output port 40 is sealed by the inner surface of the storage recess 103 when the armrest is stored, or the sound output port 60 for standby armrest is formed by the upper surface of the seat cushion 101 when the armrest is used. Sufficient effects can be obtained simply by adopting a closed structure.
Further, the configuration such as the opening position and shape of the armrest standby sound output port 60 and the through-type sound output port 40 is not limited to the configuration of the above-described embodiment, and various configurations based on the gist of the present invention. Can be taken.
[0034]
Alternatively, as shown in FIG. 5, the speaker 50 may be directly mounted inside the direct sound outlet 27 formed on the upper surface of the outer shell wall 21 constituting the housing 20B without the speaker mounting plate.
Furthermore, in the above-described embodiment, the retractable armrest 20 provided on the rear seat 100 of the vehicle has been described. However, the armrest device with a built-in speaker of the present invention is applicable to a retractable armrest provided on the side of the front seat. It can also be applied.
Further, an amplifying device for driving the subwoofer is housed inside the housings 20A and 20B, and operation keys such as a volume adjustment key and a balance key for operating the amplifying device are mounted on the upper wall 21a. Good.
[0035]
In the armrest device 10 with a built-in speaker of the present invention, a speaker unit 50 is provided inside an armrest 20 provided movably between a standby position set on the seat bag 102 and a use position set above the seat cushion 101. Installed. The armrest 20 has a through-type sound output port which is a sound output port for use of the armrest which emits sound waves generated on the rear surface of the diaphragm 51 of the speaker unit 50 to the interior space when the armrest 20 is moved to the use position. 40 and an armrest standby sound output port 60 for emitting sound waves generated by the rear surface of the diaphragm 51 of the speaker unit 50 to the interior space when the armrest 20 is moved to the standby position are separately provided. .
[0036]
That is, by separately providing the through-type sound output port 40 and the armrest standby sound output port 60 in the armrest 20, sound is output from the dedicated sound output port when the armrest 20 is used and when it is not used. Can be radiated, and a good acoustic effect can be obtained.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part showing a conventional armrest device with a built-in speaker.
FIG. 2 is a side view and a plan view of an armrest device with a built-in speaker according to one embodiment of the present invention.
FIG. 3 is a partial cross-sectional view showing a state in which the armrest device with a built-in speaker shown in FIG. 2 is set to a use position.
FIG. 4 is a partial cross-sectional view showing a state where the armrest device with a built-in speaker shown in FIG. 2 is set at a standby position.
FIG. 5 is a longitudinal sectional view of an armrest device with a built-in speaker according to another embodiment of the present invention.
[Explanation of symbols]
10 Armrest device with built-in speaker 20 Armrest 40 Through-type sound emission opening (sound emission opening for use of armrest)
50 speaker (speaker unit)
51 diaphragm 60 armrest standby sound output port 101 seat cushion 102 seatback

Claims (6)

An armrest device with a built-in speaker in which a speaker unit is mounted inside an armrest movably provided between a standby position set in a seat bag and a use position set above a seat cushion,
An armrest-use sound output port for radiating sound waves generated by a rear surface of the diaphragm of the speaker unit to a vehicle interior space when the armrest is moved to a use position, and the speaker unit when the armrest is moved to a standby position. An armrest device with a built-in loudspeaker, wherein an armrest standby sound output port for radiating sound waves generated by the rear surface of the diaphragm to the interior of the vehicle is separately provided in the armrest. A switching mechanism that switches the sound wave guidance destination generated by the rear surface of the diaphragm of the speaker unit to the sound output port for using the armrest when using the armrest, and switches to the sound output port for using the armrest when waiting for the armrest. The speaker-equipped armrest device according to claim 1, wherein the speaker-equipped armrest device is provided in the armrest. 3. The armrest device with a built-in speaker according to claim 2, wherein the speaker unit is a speaker unit for reproducing bass sound. Inside the housing of the armrest, there is formed an internal space that guides sound waves emitted by the rear surface of the diaphragm of the speaker unit to the sound emission opening for use of the armrest and the sound emission opening for standby of the armrest,
The switching mechanism provided in the internal space, when moving the armrest to the use position, interrupts communication between the internal space and the armrest standby sound output port, and moves the armrest to the standby position. 4. The armrest device with a built-in speaker according to claim 3, wherein communication between the internal space and the sound output opening for use of the armrest is cut off. 5. The armrest device with a built-in speaker according to claim 4, wherein the sound emission opening for use of the armrest comprises a through sound emission opening penetrating from one outer surface to the other outer surface of the housing. The housing is formed on an outer shell wall forming an acoustic space inside, and on the other side plate from a peripheral edge of an opening formed on one side plate of the outer shell wall to form the through-type sound emission opening. A cylindrical wall extending around the periphery of the opening, an annular space formed around the cylindrical wall by providing the cylindrical wall, and a partition for blocking the circumferential direction of the annular space.
The outer shell wall is provided with a direct sound output port for emitting sound waves emitted from the front surface of the diaphragm of the speaker unit into the vehicle interior space, and the annular space from the rear surface of the speaker diaphragm to the partition wall. Is the internal space,
The cylindrical wall near the partition wall is provided with an opening that communicates the internal space with the through-type sound emission port,
On the outer shell wall of the housing that becomes a seat back surface during armrest standby, the armrest standby sound output port communicating with an intermediate portion of the internal space is provided,
In the middle part of the internal space, the armrest standby sound output port is closed when the armrest is used, and the armrest standby sound output port is opened during the armrest standby, so that the inside of the interior toward the downstream side from the position is opened. The armrest device with a built-in speaker according to claim 5, wherein the switching mechanism for interrupting communication of the space is provided.

Images