JP3235787B2 - Speaker mounting bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the speaker mounting gold again and again about.

[0002]

2. Description of the Related Art FIG. 4 shows a front view of a conventional speaker cabinet. A speaker mounting opening is provided in a front baffle (front panel) 11 of the closed rectangular box-shaped speaker cabinet 1, and speakers 2, 3 such as a woofer and a tweeter are fitted into the speaker mounting opening from the front side. At the front ends (front ends) 211 and 311 of the speaker frames 2 and 3, fastening holes 213 and 313 are provided.
The speakers 2 and 3 are fixed to the front baffle 11 by fastening screws (not shown) to the front baffle 11 through the front baffle 13.

[0003] A vehicle-mounted speaker device in a conventional car audio device is mounted on a vehicle body such as an instrument panel, a cowl side, a door, a rear parcel tray, or an internal resin panel by providing a speaker mounting opening.

[0004]

However, in the above-described conventional speaker device, the cone 2 of the speaker 2 is not provided.
As a reaction of the vibration of the speaker 2, a vibration force in the front-rear direction is generated in the speaker frame of the speaker 2, and the vibration force is transmitted from the front end portion 211 of the speaker frame to the front baffle 11 to vibrate the front baffle 11, thereby improving the speaker performance. There was a problem of deterioration.

[0005] By increasing the thickness of the front baffle 11,
It is easy to increase the rigidity and mass and reduce the vibration of the front baffle 11, but as a result, the weight of the heavy speaker cabinet 1 is significantly increased, and the handling of the speaker cabinet 1 is greatly increased. There is a problem that it becomes difficult to fix the device when it is installed on a wall surface.

It is also conceivable to attach a weight to the speaker frame of the speaker 2. However, it is necessary to machine a screw hole or the like in the speaker frame, and at this time, there is a possibility that the cone of the speaker may be damaged by vibration. However, the speaker 2 becomes heavy and difficult to attach to the front baffle 11, the rotational moment of the speaker 2 acting on the front baffle 11 increases, and the reflected wave characteristics in the speaker cabinet 1 deteriorate. was there.

[0007] Further, similarly to the above-described speaker box having a stationary square box shape, in a conventional on-vehicle speaker device, a vibrating force in a reverse direction is generated in a speaker frame of the speaker as a reaction of the speaker cone vibration, and the vibrating force is generated by the speaker. There is a problem that the sound effect is degraded by vibrating the vehicle body or the internal resin panel (corresponding to the front baffle) supporting the frame. Since the internal resin panel of an automobile is significantly inferior in rigidity to a stationary square speaker cabinet, the vibration control of the internal resin panel is more important than the vibration control problem of the front baffle of the stationary square speaker cabinet.

It is conceivable to increase the thickness of the vehicle body or the panel to increase its rigidity and mass and reduce its vibration. However, problems such as deterioration of the fuel consumption of the vehicle and the production thereof have occurred.
It is also conceivable to attach a weight to the speaker frame. However, it is necessary to machine a screw hole or the like in the speaker frame, and at this time, there is a problem that a speaker cone or the like may be damaged by vibration.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and suppresses an increase in the weight of a speaker cabinet or an in-vehicle speaker device, and also suppresses an increase in cost and labor required for mounting a front baffle or a corresponding vehicle body or interior. An object to be solved is to provide a speaker mounting bracket capable of reducing vibration of a resin panel.

[0010]

According to a first aspect of the present invention, there is provided a speaker mounting bracket according to the first aspect of the present invention, which is formed of a zinc alloy as a material and can be in close contact with the outer peripheral surface on the back side of the front end of the speaker frame. A tubular portion having a front end surface, a fixed plate portion extending radially outward from a rear end of the tubular portion so as to be able to come into close contact with an inner surface of a front baffle of a speaker cabinet having a closed rectangular box shape, and A screw hole is provided on the distal end surface of the tubular portion to secure a distal end portion to the distal end surface of the tubular portion, and a screw hole is provided on the fixed plate portion to secure the fixed plate portion to the inner surface of the front baffle. And a hole.

The front baffle here supports a speaker in a vehicle-mounted speaker device, and blocks a vehicle body or an internal resin panel (hereinafter, also referred to as a speaker support plate) that blocks a space in front of and behind the speaker.
Shall be included. More specifically, the speaker mounting bracket has a substantially flange shape, and the fixing plate portion forming the flange is fastened to the inner surface of the front baffle by a screw. Then, the front end (front end) of the speaker frame is fastened to the front end (front end) of the tubular portion of the speaker mounting bracket with screws.

According to this configuration, the following operation and effect can be obtained. First, since the weight of the front baffle is increased by the weight of the speaker mounting bracket made of zinc alloy and having a large weight, the front baffle vibration damping property is improved. In addition, the improvement in the front baffle vibration damping property by the weight increase according to the present configuration is much more effective per unit weight than the weight increase of the front baffle itself. That is, among the respective parts of the front baffle, the largest displacement (amplitude) is at the portion where the speaker mounting bracket is attached. By selectively increasing only the weight of this portion, the weight of the speaker device is slightly increased. Thus, a greater front baffle damping effect can be obtained.

Further, since the zinc alloy is a non-magnetic material and not a magnetic material, it hardly changes the magnetic field (magnetic flux distribution) of the magnet of the speaker. The change of the magnetic field can be neglected. Further, in this speaker mounting bracket, the fixing plate portion is fixed to the back surface of the front baffle, and the front end surface of the tubular portion is hidden by the front end portion of the speaker frame, so that the appearance does not deteriorate.

Further, since the shape of the speaker mounting bracket is simple, the manufacture is easy and the cost increase is small. According to the second aspect of the present invention, in the speaker mounting bracket of the first aspect, the front baffle further includes a speaker support plate formed of an automobile body or an internal resin panel.

With this configuration, the rigidity of the speaker support plate, which is less rigid than the front baffle of the stationary rectangular speaker cabinet and has large vibration, can be favorably reduced. In addition, since the vibration suppression of the speaker support plate according to this configuration does not increase the weight and rigidity of the speaker support plate itself, it does not cause an increase in the weight of the speaker support plate itself and the manufacturing cost. It can be installed only on custom cars, and customers who choose a lower price than the improvement of sound effect will not waste unnecessary costs on the simple choice of not installing this speaker mounting bracket.

In particular, when the speaker support plate is manufactured by resin molding, an increase in the weight causes a large increase in material cost and manufacturing cost.
According to the preferred embodiment of the present invention , the following operation and effect can be obtained. (A) Since the weight of the speaker support plate is increased by the weight of the speaker mounting bracket made of a zinc alloy and having a large weight, the vibration suppression of the speaker support plate can be improved. It should be noted that the improvement in the vibration damping property of the speaker support plate due to the increase in weight according to the present configuration has a much greater effect per unit weight than when the speaker support plate is made thick.

That is, the largest displacement (amplitude) among the respective portions of the speaker support plate is the portion where the speaker mounting bracket is mounted, or more specifically, the peripheral portion of the speaker mounting opening of the speaker support plate. By selectively increasing only the weight of this portion, a large increase in the overall weight can provide a large speaker support plate vibration damping effect.

(B) In this speaker mounting bracket, since the fixing plate portion is fixed to the rear surface of the rear parcel tray,
The appearance is not deteriorated. (C) Since the shape of the speaker mounting bracket is simple, manufacturing is easy and cost increase is small. (D) The fixing hole of the speaker mounting bracket is a hole for fastening or inserting a speaker fixing screw or bolt that penetrates the front end portion of the speaker frame and the speaker support plate. By screwing or inserting a screw or bolt with the speaker support plate sandwiched between the speaker mounting bracket and the speaker mounting bracket, both the speaker frame and the speaker mounting bracket can be fixed at the same time, thereby simplifying the manufacturing and mounting work.

According to a preferred embodiment of the present invention , the speaker mounting bracket is formed by a die-casting method or a sand-casting method having a large number of irregularities for silencing on the surface.
In this way, the sound wave hitting the speaker mounting bracket is scattered and absorbed by the unevenness of the speaker mounting bracket surface, so that the sound effect can be further improved.

Further, according to this configuration, the speaker mounting bracket is manufactured by a die-casting method or a sand-casting method using a soft zinc alloy which is easy to form.
It is easy to produce innumerable deep irregularities, and it is possible to satisfactorily suppress sound wave reflection from the speaker mounting bracket.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the following examples. As the zinc alloy, an alloy containing at least 50 wt% or more of zinc is preferably used, and a zinc alloy containing 99 wt% or more of zinc may be used. Zinc alloy is soft, but this soft property is
This is advantageous because it has an excellent effect that it is not only easy to form, but also difficult to transmit the vibration of the speaker frame to the front baffle. Examples of the zinc alloy include Zn-A such as ZAMAK7, ZDC1, and ZDC2.
Although l-type zinc alloys for die-casting are particularly preferable in terms of economy, zinc alloys for dies such as ZAS can also be used.

[0022]

Embodiment 1 An example of a speaker cabinet using the speaker mounting bracket of the present invention will be described below. FIG. 1 is a cross-sectional view of a main part of the speaker device, and FIG. 2 is a front view of a speaker mounting bracket 4 which is a feature of the present embodiment.
Shown in

A speaker cabinet 1 in the form of a sealed square box
The front baffle 11 is provided with the speaker 2 and the speaker mounting bracket 4. The front baffle 11 is provided with a speaker mounting opening 12, and the speaker 2 is fitted into the speaker mounting opening 12 from the front side.

The speaker 2 has a speaker frame 21 for supporting a cone 20 and a coil portion (not shown) for driving the cone 20. The front end 211 of the speaker frame 21 has four fastening holes (not shown) for fastening. Is provided. The front baffle 11 has a ring-shaped cylindrical portion 41.
A speaker mounting bracket 4 is fixed, which comprises a fixing plate 42 which is a quadrangular flange having an outer shape larger than the cylindrical portion 41. The cylindrical portion 41 has a speaker mounting opening 1.
2. 413 is a cylindrical portion 41 and a fixed plate portion 4
2 is an inner peripheral surface.

The cylindrical portion 41 has a front end surface 411 that can be in close contact with the outer peripheral surface 2111 on the rear side of the ring-shaped front end portion 211 of the speaker frame 21, and the front end surface 411 has four screw holes as shown in FIG. 412 are provided. Screw hole 412
A screw (not shown) is screwed into the speaker frame 21 through the above-described fastening play hole of the speaker frame 21, whereby the speaker frame 21 is fixed to the speaker mounting bracket 4.

The fixed plate portion 42 has a front end face 422 that is in close contact with the inner surface 111 of the front baffle 11 and extends radially outward from the rear end of the cylindrical portion 41. The fixed plate portion 42 is provided with a total of four holes 421, and the fixed plate portion 42 is fixed to the front baffle 11 by screws penetrating these holes. The speaker mounting bracket 4 is made of a zinc alloy having a zinc content of 90 wt% or more.

The above-described speaker cabinet 1 of the present embodiment employs a structure in which the speaker frame 21 is fixed to the front baffle 11 via the speaker mounting bracket 4, so that an increase in the weight of the speaker device is suppressed while the front baffle is suppressed. 11 can be reduced, and an increase in cost and installation time can be suppressed. More specifically, since the weight of the front baffle 11 is increased by the weight of the speaker mounting bracket 4 which is made of a zinc alloy and has a large weight, the front baffle damping property is improved. The improvement in the front baffle vibration damping property by the increase in weight according to the present configuration is much more effective per unit weight than when the weight of the front baffle 11 itself is increased. That is, the front baffle 11
Among the parts, the largest displacement (amplitude) is in the vicinity of the speaker mounting opening 12 to which the speaker mounting bracket 4 is mounted. A slight increase in weight can provide a large vibration damping effect of the front baffle 11.

The speaker mounting bracket 4 is
The fixed plate portion 42 is formed on the inner surface 111 of the front baffle
, And the distal end surface 411 of the cylindrical portion 41 is hidden by the distal end portion 211 of the speaker frame 21, so that the appearance does not deteriorate. Further, since the shape of the speaker mounting bracket 4 is simple, the manufacture is easy and the cost increase is small. Further, the speaker mounting bracket 4 is made of a zinc alloy containing 90 wt% or more of zinc by a die casting method or a sand casting method, and innumerable fine irregularities are formed on the surface thereof at low cost. Can also be played. Further, the vibration of the front baffle 11 can be reduced without requiring modification of the speaker 2, and it is easy to use the existing speaker cabinet.

[0029]

Embodiment 2 Another example of a speaker cabinet using the speaker mounting bracket of the present invention will be described below with reference to FIG. However, in the following embodiments, components having the same main functions as those of the conventional speaker cabinet shown in FIG. 4 and the speaker cabinet of the first embodiment are denoted by the same reference numerals. In addition, the front shape of this speaker cabinet is equal to FIG.

Reference numeral 1 denotes a closed rectangular box-shaped speaker cabinet, the front panel of which is a front baffle 11.
Only is shown. The front baffle 11 is provided with a speaker mounting opening 12, and the speaker 2 is fitted into the speaker mounting opening 12 from the front side. The speaker 2 has a speaker frame 21 that supports a cone 20 and a coil unit (not shown) that drives the cone 20. A front end portion 211 of the speaker frame 21 has four fastening play holes 213. Is provided.

The front baffle 11 has a tubular portion 41,
The speaker mounting bracket 4 including a fixing plate portion 42 which is a cylindrical portion having a larger outer shape than the cylindrical portion 41 is fixed, and the cylindrical portion 41 is fitted into the speaker mounting opening 12. 43 is an inner peripheral surface of the cylindrical portion 41 and the fixed plate portion 42.
The cylindrical portion 41 has a front end surface 411 that can be in close contact with the rear outer peripheral surface 2111 of the wheel plate-shaped front end portion 211 of the speaker frame 21.
, And four screw holes 412 are provided in the distal end surface 411. A screw (not shown) is screwed into the screw hole 412 through the fastening play hole 213 of the speaker frame 21 described above, whereby the speaker frame 21 is fixed to the speaker mounting bracket 4.

The fixing plate portion 42 has a front end surface 422 having an inner surface 1 of the front baffle 11 of the speaker cabinet 1.
11 and extends radially outward from the rear end of the cylindrical portion 41. The fixing plate portion 42 is provided with a total of four holes 421, and screws passing through these holes are used to fix the fixing plate portion 42.
Are fixed to the front baffle 11. 44 is hole 4
21 is a cutout recess surrounding 21.

According to this embodiment, the same operation and effect as those of the speaker mounting bracket of the first embodiment can be obtained.

[0034]

Embodiment 3 An example of an in-vehicle speaker device using the speaker mounting bracket of the present invention will be described with reference to FIGS. The speaker device 1 includes a rear parcel tray (corresponding to a front baffle in the present invention) 11 which is a partition separating a rear part of a vehicle compartment and a luggage compartment of a car, a speaker 2, and a speaker mounting bracket 4. ing. A speaker mounting opening 12 is provided in the rear parcel tray 11, and the speaker 2 is fitted into the speaker mounting opening 12 from the front side.
The speaker 2 has a speaker frame 21 that supports a cone 20 and a coil unit (not shown) that drives the cone 20. Four free play holes (not shown) are provided at a front end 211 of the speaker frame 21. ing.

On the rear parcel tray 11, a speaker mounting bracket 4 is fixed, which comprises a tubular portion 41 having an octagonal outer shape and a fixing plate portion 42 which is a rectangular tubular portion having an outer shape larger than the tubular portion 41. The tubular portion 41 is fitted into the speaker mounting opening 12. 413 is an inner peripheral surface of the cylindrical portion 41 and the fixed plate portion 42. The cylindrical portion 41 is provided on the rear outer peripheral surface 2 of the wheel plate-shaped tip portion 211 of the speaker frame 21.
111 has a front end surface 411 that can be closely contacted with the front end surface 411.
Is provided with four screw holes 412 as shown in FIG. A screw (not shown) is screwed into the screw hole 412 through the above-described fastening play hole of the speaker frame 21, whereby the speaker frame 21 is fixed to the speaker mounting bracket 4.

The upper end surface 422 of the fixing plate portion 42 is in close contact with the inner surface (surface on the side opposite to the passenger compartment) 111 of the rear parcel tray 11 of the in-vehicle speaker device 1 and extends radially outward from the rear end of the cylindrical portion 41. Have been. The fixed plate portion 42 is provided with a total of four holes 421, and the fixed plate portion 42 is fixed to the rear parcel tray 11 by screws passing through the holes.

The speaker mounting bracket 4 is made of a zinc alloy having a zinc content of 90 wt% or more. The speaker device of the present embodiment described above has a speaker mounting bracket 4.
, The structure of fixing the speaker frame 21 to the rear parcel tray 11 is adopted, so that the vibration of the rear parcel tray 11 is reduced while the weight of the in-vehicle speaker device is prevented from increasing, and the increase in cost and installation labor is also suppressed. be able to. More specifically, since the weight of the rear parcel tray 11 is increased by the weight of the speaker mounting bracket 4 made of a zinc alloy and having a large weight, the vibration control performance of the rear parcel tray is improved. It should be noted that the improvement in the vibration damping performance of the rear parcel tray due to the increase in weight according to the present configuration is much more effective per unit weight than when the weight of the rear parcel tray 11 itself is increased.
That is, among the respective parts of the rear parcel tray 11, the largest displacement (amplitude) is caused by the speaker mounting bracket 4.
Is a portion near the speaker mounting opening 12 to which the speaker device is to be attached. By selectively increasing only the weight of this portion, a large vibration reduction effect of the rear parcel tray 11 can be obtained due to a slight increase in the weight of the speaker device. . Also, the speaker mounting bracket 4 is such that the fixing plate portion 42 has a surface 1 on the side opposite to the passenger compartment of the rear parcel tray 11.
11 and the distal end surface 411 of the tubular portion 41 is hidden by the distal end portion 211 of the speaker frame 21, so that the appearance does not deteriorate.

[0038]

Embodiment 4 Another example of an in-vehicle speaker device using the speaker mounting bracket of the present invention will be described below with reference to FIGS. A speaker mounting opening 12 is provided in a rear parcel tray 11 of the vehicle-mounted speaker device 1, and the speaker 2 is fitted into the speaker mounting opening 12 from the front side. Speaker 2
The speaker frame 21 includes a speaker frame 21 that supports the speaker cone 20 and a coil unit (not shown) that drives the speaker cone 20.
Is provided with a play hole 213 for fastening.

On the rear parcel tray 11, a speaker mounting bracket 4 comprising a cylindrical tubular portion 41, a ring-shaped fixed plate portion 42 and a square projection 43 is fixed.
1 is fitted into the speaker mounting opening 12.
The cylindrical portion 41 has a front end surface 411 that can be in close contact with the rear outer peripheral surface 2111 of the wheel plate-shaped front end portion 211 of the speaker frame 21.
, And four screw holes 412 are provided in the distal end surface 411. A screw (not shown) is screwed into the screw hole 412 through the play hole 213 for fastening, whereby the speaker frame 21 is fixed to the speaker mounting bracket 4.

The fixed plate portion 42 is formed in the shape of a circular plate having an outer diameter larger than that of the cylindrical portion 41.
The rear parcel tray 11 is in close contact with the surface 111 on the side opposite to the passenger compartment, and extends radially outward from the rear end of the cylindrical portion 41. The fixing plate portion 42 is provided with a total of four holes 421, and screws (not shown) penetrating the holes make the fixing plate portion 42.
Are fixed to the rear parcel tray 11.

As shown in FIG. 8, the angular projections 43 extend substantially radially from the outer periphery of the fixed plate portion 42 along the inner surface 111 of the rear parcel tray 11. The speaker mounting bracket 4 is made of a zinc alloy having a zinc content of 90 wt% or more, and the inner peripheral surface of the cylindrical portion 41 and the exposed surface of the fixing plate portion 42 remain rough casting except for the vicinity of the hole 421. Further, a large number of irregularities (preferably, the average opening diameter is 1 mm or less, and the average depth is 0.5 mm or more) are provided. By doing so, the acoustic wave hitting this site is scattered.

The speaker device of this embodiment is connected to the speaker frame 21 via the speaker mounting bracket 4 described above.
Is fixed to the rear parcel tray 11, the vibration of the rear parcel tray 11 can be reduced while suppressing the increase in the weight of the in-vehicle speaker device, and the cost and the labor for mounting can be suppressed. By using the speaker mounting bracket 4 of this embodiment, the following operation and effect can be further obtained in addition to the operation and effect of the first embodiment.

Since the angular projections 43 extend substantially radially from the outer periphery of the fixed plate portion 42 along the inner surface 111 of the rear parcel tray 11, a further vibration damping effect of the rear parcel tray can be achieved. More specifically,
The vibration of the rear parcel tray 11 bends and vibrates with the edge of the rear parcel tray 11 as a node and the vicinity of the speaker mounting opening 12 of the rear parcel tray 11 as an antinode. Therefore, bending occurs in a linear direction extending substantially radially from the speaker mounting opening 12 of the rear parcel tray 11. Therefore, the rectangular projections 4 having rigidity in the substantially radial direction from the speaker mounting bracket 4.
If the extension 3 is provided, the above-mentioned bending or vibration of the rear parcel tray 11 can be satisfactorily prevented.

Further, since the horn-shaped projections 43 are integrated with the speaker mounting bracket 4 for mounting the in-vehicle speaker device, the number of parts and the labor for mounting are not increased. In addition, the so-called box noise, that is, the vibration of the rear parcel tray 11 can be reduced without requiring modification of the speaker 2, and can be easily used for an existing vehicle-mounted speaker device. In addition to the surface of the speaker mounting bracket 4 having a rough casting surface having a large number of irregularities, the surface of the speaker mounting bracket is provided with a myriad of irregularities on one surface, so that the acoustic wave scattering reflection The effect of reduction by absorption heat conversion can be realized by a low-cost manufacturing method called casting.

[0045]

Embodiment 5 Another embodiment will be described with reference to FIG. The speaker mounting bracket 4 of this embodiment is the same as the speaker mounting bracket 4 shown in Embodiment 4 (see FIG. 7).
The feature is that the shape of is changed. More specifically, the front part 40a of the inner peripheral surface 40 of the speaker mounting bracket 4 is formed in a cylindrical shape as in the first embodiment, but the rear part 40b increases in diameter at a predetermined curvature toward the rear. It is formed in the shape of a bugle.

In this way, the speaker cone 20
Radiation waves radiated from the rear side, standing waves in the vehicle-mounted speaker device 1, various reflected waves, and the like are diffusely reflected on the curved surface, so that sound pressure leaking from the cabinet to the external space can be reduced.

[0047]

Embodiment 6 FIG. 1 shows another example of the vehicle-mounted speaker device of the present invention.
0, and will be described below with reference to FIG. The rear parcel tray 11 of the in-vehicle speaker device 1 is provided with a speaker mounting opening 12, and the speaker 2 is fitted into the speaker mounting opening 12 from the front side.

The speaker 2 has a speaker frame 21 that supports a speaker cone 20 and a coil part (not shown) for driving the speaker cone 20. A hole 213 is provided. On the rear parcel tray 11, the speaker mounting bracket 4 including a wheel-shaped fixing plate portion 42 and four square projections 43 is fixed. The main hole 413 of the fixing plate portion 42 is Concentrically aligned.

The fixing plate 42 is provided with four screw holes 412. The screw hole 412 has a play hole 213 for fastening.
And a screw (not shown) is screwed through the play hole 13 of the rear parcel tray, whereby the speaker frame 2
1 and the speaker mounting bracket 4 are fixed to the rear parcel tray 11. The fixing plate portion 42 is provided in close contact with the surface 111 of the rear parcel tray 11 on the side opposite to the passenger compartment. As shown in FIG.
It extends substantially radially from the outer periphery of the fixed plate portion 42 along the surface 111 of the rear parcel tray 11 on the side opposite to the passenger compartment.

According to this embodiment, the same effects as those of the above embodiments can be obtained.

[0051]

Embodiment 7 FIG. 1 shows another example of the in-vehicle speaker device of the present invention.
This will be described with reference to FIG. In this embodiment, since the shape of the speaker mounting bracket 4 is changed, the shape of the speaker mounting bracket 4 will be described. This speaker mounting bracket 4 is different from the speaker mounting bracket 4 of the sixth embodiment in that a total of four holes 421 for fixing the speaker mounting bracket 4 are additionally provided in the fixing plate portion 42 in addition to the screw holes 412. The feature is. The speaker mounting bracket 4 is fixed to the rear parcel tray 11 by screws (not shown) penetrating the holes 421.

In this way, it is not necessary to hold the position of the speaker mounting bracket 4 when the speaker 2 is mounted, and the operation is simplified.

[0053]

Embodiment 8 FIG. 1 shows another example of the vehicle-mounted speaker device of the present invention.
3 will be described. In this embodiment, since the shape of the speaker mounting bracket 4 is changed, the shape of the speaker mounting bracket 4 will be described. This speaker mounting bracket 4 is different from the speaker mounting bracket 4 of the seventh embodiment in that the play hole 41 is used instead of the screw hole 412.
2a is provided, and the horn-like projection 43 is omitted. Therefore, in this embodiment, as shown in FIG. 13, a bolt may be inserted from above with the rear parcel tray 11 sandwiched between the front end portion 211 of the speaker frame 21 and the speaker mounting bracket 4 and fixed with a nut. .

[0054]

Embodiment 9 FIG. 1 shows another example of the vehicle-mounted speaker device of the present invention.
This will be described with reference to FIG. In this embodiment, since the shape of the speaker mounting bracket 4 is changed, the shape of the speaker mounting bracket 4 will be described. The speaker mounting bracket 4 is characterized in that a play hole 412a is provided in place of the screw hole 412, and the angular projection 43 is omitted. Therefore, in this embodiment, FIG.
As shown in FIG.
A bolt may be inserted from the front with the rear parcel tray 11 sandwiched between the speaker mounting bracket 1 and the speaker mounting bracket 4 and fixed with a nut.

[0055]

Embodiment 10 Another embodiment of the vehicle-mounted speaker device of the present invention will be described with reference to FIG. In this embodiment, since the shape of the speaker mounting bracket 4 is changed, the shape of the speaker mounting bracket 4 will be described. The speaker mounting bracket 4 is characterized in that a cylindrical portion 41 is provided, and further, irregularities larger than the rough casting surface of the casting are provided on the surface of the speaker mounting bracket 4 innumerably. The outer diameter of the cylindrical portion 41 is set substantially equal to the inner diameter of the speaker mounting opening 12, has a cylindrical shape, and is inserted into the speaker mounting opening 12 of the rear parcel tray 11.

In this way, the positioning of the speaker mounting bracket 4 is facilitated by the cylindrical portion 41.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a speaker cabinet using a speaker mounting bracket according to a first embodiment.

FIG. 2 is a front view of the speaker mounting bracket 4 shown in FIG.

FIG. 3 is a longitudinal sectional view of a main part of a speaker cabinet using the speaker mounting bracket of the second embodiment.

FIG. 4 is a front view of a conventional speaker device.

FIG. 5 is an enlarged longitudinal sectional view of a main part of an in-vehicle speaker device using the speaker mounting bracket of the third embodiment.

FIG. 6 is a front view of a speaker mounting bracket 4 according to a third embodiment.

FIG. 7 is an enlarged longitudinal sectional view of a main part showing another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the fourth embodiment.

FIG. 8 is a front view of a speaker mounting bracket 4 according to a fourth embodiment.

FIG. 9 is an enlarged longitudinal sectional view of a main part showing another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the fifth embodiment.

FIG. 10 is an enlarged longitudinal sectional view of a main part showing another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the sixth embodiment.

FIG. 11 is a front view of a speaker mounting bracket 4 according to a sixth embodiment.

FIG. 12 is an enlarged longitudinal sectional view showing a main part of another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the seventh embodiment.

FIG. 13 is an enlarged longitudinal sectional view of a main part showing another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the eighth embodiment.

FIG. 14 is an enlarged longitudinal sectional view of a main part showing another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the ninth embodiment.

FIG. 15 is an enlarged longitudinal sectional view of a main part showing another embodiment of the vehicle-mounted speaker device using the speaker mounting bracket 4 of the tenth embodiment.

[Explanation of symbols]

1 is a speaker cabinet or an in-vehicle speaker device,
2 is a speaker, 4 is a speaker mounting bracket, 11 is a front baffle or rear parcel tray, 21 is a speaker frame, 41 is a cylindrical portion, 42 is a fixing plate portion, 43 is a square projection, 412 is a screw hole (fixing hole), 421 is a hole (play hole for fastening)

Claims (2)

(57) [Claims] 1. A tubular portion having a front end surface that can be in close contact with the outer peripheral surface on the back side of a front end portion of a speaker frame, and a fixing that extends radially outward from a rear end of the tubular portion so as to be in close contact with an inner surface of a front baffle. A plate portion, a screw hole provided on a tip surface of the tube portion for fixing a tip portion of the speaker frame to a tip surface of the tube portion, and a screw hole provided on the inner surface of the front baffle for fixing the fixing plate portion. And a hole provided in the fixing plate portion, wherein the speaker mounting bracket is formed using a zinc alloy as a material. 2. The speaker mounting bracket according to claim 1, wherein said front baffle comprises a vehicle body of an automobile or an internal resin panel supported by said vehicle body .