JPH07212882

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DESCRIPTION JPH07212882
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
microphone fixing device. More specifically, the present invention relates to an apparatus for
fixing a microphone of a wireless telephone intended to be used inside a mobile vehicle such as a
car.
[0002]
2. Description of the Related Art In the installation of a radio telephone, in particular in a motor
vehicle, several devices have been designed, in particular for the purpose of use by the driver.
Such installation devices must meet several safety standards. In particular, there is a need to
minimize the reason why the driver has to release his hand from the steering wheel.
[0003]
To that end, in a radio telephone installation device in a car, a speaker and a microphone are
installed in the driver's cab so that the user can listen to the other party and talk to the other
party without grasping the transceiver by hand. it can. Such devices are called hands free.
[0004]
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An important characteristic of the microphones used in hand-free devices for wireless telephones
is that they are extremely sophisticated. As a result, the quality of the sound transmitted by the
microphone strongly depends on the direction of the main axis of the microphone relative to the
direction in which the user speaks. Such microphones are said to have directivity. Thus, in order
to obtain a high level of performance and a good listening quality for the call recipient, it is
necessary to precisely orient the microphone. This localization depends on the physical
constitution of the individual user, in particular the height. Therefore, it is essential for the
microphone to be able to adjust its direction.
[0005]
For this purpose, two devices are currently present for fixing the microphone inside the cab of
the motor vehicle.
[0006]
The first of such devices is a method of securing the microphone to a clip, which can be
integrated with the dashboard of the vehicle but is not inseparably secured thereto.
By removing the clip from the dashboard and positioning it in an appropriate manner, the user
can adjust the microphone as he / she desires.
[0007]
According to the second conventional fixing device, the microphone is mounted on a support,
one side of the support is covered with an adhesive material and can be attached to a coating
present inside the cabin of the vehicle, The coating is also adapted to receive a microphone. This
material is such that it exhibits greater adhesion to the support than to the coating described
above. In this way, the microphone can be adjusted in the desired direction by peeling off the
fixing device and sticking it in a suitable position.
[0008]
However, the conventional fastening devices are not satisfactory.
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[0009]
The operations required to move the microphone and adjust the direction are dangerous for the
driver to perform while driving.
[0010]
In fact, the forces exerted to operate such a device are relatively large, which may cause a sudden
movement on the driver's side due to the reaction, which may result in an unintended change of
direction of the motor vehicle.
[0011]
SUMMARY OF THE INVENTION It is therefore an object of the present invention to improve the
microphone fixing device so that the driver's operation of the mobile vehicle is less dangerous
than the operation of the conventional device.
[0012]
SUMMARY OF THE INVENTION The invention therefore proposes a microphone fixing device,
said fixing device comprising a support element, said device comprising a partial sphere, which
partial sphere is held Can be tilted like a ball joint with respect to the supporting element, the
microphone being integral with the partial sphere, so that the microphone can be adjusted in
direction through action on the partial sphere It is characterized by
[0013]
Thus, when the device according to the invention is installed in a mobile vehicle, it is sufficient to
rotate the partial sphere in its support in order to adjust the microphone in the appropriate
direction, which is relatively weak with one hand This can be done by exerting force, and thus
does not cause a risky sudden movement that results in an unintended change of direction of the
vehicle.
[0014]
It would be advantageous if the microphone could be incorporated directly into the partial
sphere.
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Thus, the space occupied by the fixing device is reduced.
[0015]
At this time, the shape of the microphone storage portion in the partial sphere is configured so as
to enable optimal transmission of sound, in particular, so as to enable optimal operation of the
microphone.
[0016]
Further features and advantages of the invention will appear in the description of specific
embodiments of the invention, which are given by way of illustration and not by way of
limitation. .
[0017]
DESCRIPTION OF THE PREFERRED EMBODIMENT The perspective view of FIG. 1 shows a first
fastening device 10 according to the invention.
The fixing device 10 comprises a partial sphere 11 and a microphone 13, the partial sphere
being mounted in a substantially parallelepipedic support element 12 and the microphone 13
being cylindrical and partially being incorporated into the object 11, Also, it partially protrudes
above the outline of the sphere forming the surface of the object 11.
[0018]
The partial sphere 11 can be so-called tilted relative to the support element 12 like a ball joint.
[0019]
The connection conductor 14 connects the microphone 13 with other elements in the device (not
shown) to which the microphone is attached, but such devices include, for example, a car using a
hands-free device There are wireless telephones intended for internal use and voice-activated
electromagnetic microphones.
[0020]
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The fixation device 10 is not intended for permanent fixation.
Thus, as shown in FIG. 3, the fixing device 10 can be placed in the driver's cab 30 of a motor
vehicle, for example on the dashboard 31, in the vicinity of the driver 32 of the motor vehicle.
[0021]
According to the invention, it is sufficient for the driver 32 to rotate the object 11 within its
support 12 in order to adjust the microphone 13 in the desired direction.
The object 11 is almost perfectly spherical (it is not perfect spherical as it contains the
accommodation 15 adapted to incorporate the microphone 13) and also acts as a ball joint, so
that it is inside the support element 12 For example, it is very easy to incline along arrow F (see
FIG. 2).
Of course, the arrow F only shows an example of the adjustable direction, and the ball joint
composed of the support element 12 and the object 11 can adjust the object 11 in any direction,
so the microphone 13 has an infinite number of different attitudes. You can take
[0022]
Therefore, it is particularly advantageous to use the fixing device 10 according to the invention
for the installation of a microphone attached to a radiotelephone operating handsfree in a motor
vehicle.
As a matter of fact, the fixing device according to the invention makes it very easy to adjust the
direction of the microphone, so that it is always under optimum conditions for voice performance
depending on the size and posture of the speaker At the same time, the operation of the
microphone is facilitated and thus less dangerous when the driver of the vehicle performs the
operation than the operation of the fixing device according to the prior art.
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[0023]
Because of the fact that the fixing device 10 according to the invention is not permanently fixed,
not only the driver and the passenger of the passenger seat but also any passenger inside the
vehicle can likewise use the microphone 13.
[0024]
In the perspective view of FIG. 4 a second fixing device 40 according to the invention is depicted.
The fixation device 40 comprises the same main elements as the fixation device 10 (also see FIG.
5), ie the partial sphere 41 is attached to the substantially parallelepipedic support element 42
and the cylindrical microphone 43 is a partial It is incorporated into the object 41 and partially
protrudes above the contour of the sphere forming the surface of the object 41.
[0025]
The partial sphere 41 can likewise be tilted relative to the support element 42 like a ball joint.
[0026]
The connection conductor 44 connects the microphone 43 with other elements in the device (not
shown) to which the microphone is attached (for example, a wireless telephone).
[0027]
The fixing device 40 is intended to be fixed in the interior light 33 of the cab 30 (see FIG. 6).
To this end, the support element 42 is provided, for example, with several openings 420, which
openings are intended to work with the claws (not shown), which are used to fit the fastening
device 40. And the fixing device is fixed in the room light 33 by the function of the claws.
[0028]
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Preferably, the fixing device 40 is mounted in a room light 33 at the center of the front of the cab
so that the microphone 43 can be used by the driver and the passenger on the passenger seat.
It is advantageous if this fixing device 40 can be integrated into the room light at the same time
as the reading lamp and possibly also with an infrared-controlled handset when manufacturing
the motor vehicle, and this handset should be mounted at this location in the cab Is widely
known.
[0029]
The fixation device 40 works the same as the fixation device 10 with regard to adjusting the
orientation of the microphone 43 and provides the same advantages.
[0030]
FIGS. 7-9 show three possible variants for incorporating the microphone 43, for example in the
object 41. FIG.
These three variants of the object 41 are indicated by the reference numerals 417, 418 and 419
respectively.
Of course, these variants likewise apply to the object 11 of the fixation device 10 according to
the invention and also to any other fixation device according to the invention.
[0031]
In order to reduce the footprint of the fastening device, and to meet some safety standards which
require that the element with the protruding ridges not be able to pop out in the vicinity of the
occupant, It may be desirable to incorporate deeper into the interior of the to prevent the
microphone 43 from jumping out of the contour of the sphere forming the surface of the object
41.
[0032]
The shapes of the three receptacles 457, 458, 459 listed respectively in FIGS. 7 to 9 show
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possible embodiments which meet the above requirements.
[0033]
As is widely known by experts in the field of microphones, the housing portion of the
microphone 43 pierced by the object 41 should be such that a predetermined part of the
microphone 43 is outside the object 41, Is to obtain optimal voice performance.
In FIGS. 7 to 9, the portion that must be exposed is the portion that exists outside the dotted line
L drawn above the microphone 43.
Of course, this is only an example, and the expert would adapt the receptacle inside the partial
sphere to the individual microphone shape.
[0034]
The microphones used in the fixation device according to the invention may be of any known
type.
So-called electret microphones are an example of high performance microphones that can be
used for hands-free operating radiotelephones.
[0035]
Of course, the invention is not limited to the embodiments described herein, and all means can be
replaced by equivalent means without departing from the scope of the invention.
[0036]
In all the drawings, common elements have the same reference numbers.
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