JP3396355B2 - Speaker - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used for mounting on a vehicle, and more particularly to a speaker that can be installed on mounting parts formed on a mounting base material and having different sizes.

[0002]

2. Description of the Related Art FIG. 7 is a cross-sectional view showing a state in which a speaker main body Sa which is conventionally used for mounting on a vehicle is installed on a mounting base material 10. The frame 1 of the speaker body Sa is made of metal, and the cone-shaped diaphragm 2 is provided in the frame 1.
Is provided. The conical bottom portion 2a of the diaphragm 2 is connected to the frame 1 via the deformation joint portion 3 whose cross section is curved in a semi-cylindrical shape.
Is supported by the opening edge 1a. The outer circumference of the conical head portion 2b of the diaphragm 2 is supported by the frame 1 via a damper plate 4. The damper plate 4 is formed of a flexible sheet, a paper material, a resin film, or the like in which resin fibers are knitted, and is formed with multiple corrugated concentric circles. The inner peripheral portion 4a of the damper plate 4 is connected to the conical head portion 2b of the diaphragm 2 directly or via a bobbin 5 described later, and the outer peripheral portion 4b of the damper plate 4 is a support step formed on the inner surface of the frame 1. Part 1b
It is fixed by means such as adhesion. The vibration plate 2 is supported by the deformation joint 3 and the damper plate 4 so as to be vibrable.

Voice coils C1 and C2 are wound around a bobbin 5 connected to the conical head portion 2b of the diaphragm 2. A magnetic field generator (a) is provided on the base side of the frame 1. The magnetic field generating section (a) has a magnet 7, yokes 7a, 7a joined to the ends thereof, and an opposing yoke 6 facing the respective yokes 7a, 7a. Yoke 7a, 7
The voice coils C1 and C2 are located in the gap between a and the opposing yoke 6. Speaker body Sa above
Is attached to a mounting base material 10 such as a door or a speaker box in a vehicle. At this time, a grill 12 may be attached to cover the sounding part in front of the frame 1.

At the sounding side opening edge 1a of the frame 1,
A plurality of mounting holes 1c are arranged in a circle at a pitch of a predetermined distance (radius) from the center and are bored. Also, the opening edge 1
A ring-shaped grille frame 8 is fitted around the outer periphery of a. Ribs 8 projecting toward the center of the ring on the grille frame 8.
c is integrally formed, and mounting holes 8a are formed in a plurality of places of this rib 8c. The distance from the center of the mounting hole 8a is the same as that of the mounting hole 1c. The frame 1 and the grille frame 8 are fitted to each other such that the opening edge portion 1a overlaps the rib 8c in the Z direction. A mounting hole 10a (diameter W) formed in the attachment base material 10 at the center of the frame 1
a) The opening edge 1a of the frame 1 when inserted into the inside
The grill frame 8 is installed on the front surface (the upper surface in the drawing) of the mounting base material 10. The mounting screw 9 is commonly inserted into the mounting hole 1c of the frame 1 and the mounting hole 8a of the grille frame 8 and screwed to the mounting base material 10. The mounting screw 9 jointly tightens the frame 1 and the grille frame 8 together. Fixed in.

A groove 8b is formed on the surface of the grill frame 8 so as to make a round along the grill frame 8, and the groove 8b is formed in the groove 8b.
A protective grill 12 is fitted and attached to cover the entire sound producing side of the speaker body Sa. This grill 12
It is composed of a so-called punching net in which a thin plate is punched in a mesh shape.

[0006]

[Problems to be Solved by the Invention] The above speaker body Sa
Can be mounted only on the mounting portion of one type of structure that is standardized according to the speaker body Sa.
A mounting hole and a screw mounting pilot hole that match a speaker of a predetermined standard are formed in a mounting portion of a speaker main body in a speaker box, a mounting portion of a speaker such as an automobile door, or the like. The speaker body Sa shown as an example in FIG. 7 is a standard product having an outer diameter dimension of 16 cm. Therefore, the inner diameter Wa of the mounting hole 10a formed in the mounting base material 10 is approximately 14.5 cm, and the mounting screw 9 is inserted. Mounting hole 1c
The distance Wb in the diametrical direction is approximately 15.6 cm.

As described above, the mounting portion of the speaker main body conforms to the dimensional standard of the speaker, but the dimensional standard is different for each vehicle type or for each speaker box when mounted on a vehicle. Therefore, even if the speaker main body already attached is to be replaced with a speaker main body of another type having higher performance, the speaker main body of a predetermined standard (for example, the 16 cm standard) is not attached to the mounting portion manufactured for the standard. Can only be installed. For example, as shown in FIG. 7, when a mounting hole 11a having a small diameter Wc conforming to the standard of a small-diameter speaker body is formed in the mounting base material 11, the taper portion of the frame 1 of the 16-cm speaker body Sa is formed. The outer peripheral portion 1d hits the edge of the mounting hole 11a and cannot be mounted. Also mounting hole 1
The positions of c and the prepared holes for mounting the mounting screws formed in the mounting base material 11 are also displaced.

Next, even if the diameter dimension Wa of the mounting hole 10a of the mounting base material 10 to which the speaker body Sa is mounted and the pitch between the mounting hole 1c and the prepared hole formed in the mounting base material 10 are the same. For example, when the depth dimension D1 of the speaker main body is larger than the depth of the hole of the speaker mounting portion in the door of the automobile, for example, the speaker main body cannot be attached.

The present invention solves the above-mentioned problems of the prior art by allowing a speaker having a predetermined standard size to be mounted on a mounting part of another type of standard, and replacing a mounting part of a different standard with a conventional one. It is an object of the present invention to provide a speaker whose installation can be completed by a simple operation without any trouble.

[0010]

A speaker of the present invention comprises a speaker main body having a frame in which a mounting hole having a predetermined distance from the center is formed in an opening edge portion, an opening edge portion of the frame, and a mounting base material. The spacer is a ring-shaped spacer interposed between the frame and the spacer, and the spacer has a fitting portion that fits with each other. Is characterized in that mounting holes having different distances are formed.

In the above, a deformed portion is formed on the outer periphery of the frame toward the center, and the deformed portion is flush with the bottom surface of the spacer or the mounting base material more than the bottom surface when the frame and the spacer are fitted together. It is preferable that the spacer is located on the side away from the frame, and the spacer is formed with a convex portion that fits into the notch formed in the frame. It is preferable that the mounting screw inserted into the spacer can be screwed into the spacer.

[0012] In the above, it is possible that the convex portion of the spacer is provided with a mounting hole for the mounting base material.

Further, when the mounting screw screwed to the mounting base material is inserted into the mounting hole of the spacer, the head of the screw is located in the recess of the spacer so that the head of the screw does not interfere with the frame. Can be configured to.

In the present invention, a ring-shaped spacer is interposed between the frame of the speaker body having a predetermined standard size and the mounting base material. The frame and the spacer have fitting portions that fit with each other, and preferably, the convex portion on the spacer side fits into the cutout portion of the frame. In this case, the fitting phase of the speaker body and the spacer is always the same when the convex portion and the notch portion are fitted, and at this time, the mounting hole formed in the frame and the screw formed in the spacer It is preferable that the screw holes and the screw holes are aligned with each other. With this configuration, the frame and the speaker can be fixed without fail when the speaker body and the spacer are screwed together.

The spacer is provided with a mounting hole formed at a position different from the opening edge portion of the frame, and preferably, a plurality of sets having different mounting positions are formed in the mounting hole. Therefore, by using this spacer, it is possible to mount the speaker main body even on a mounting portion that does not meet the original standard of the speaker main body. Further, when the spacer is used, the opening edge of the frame can be floated from the mounting base material, so that the speaker main body having a large depth can be mounted even when the mounting portion is shallow. Further, by providing a deformed portion extending in the center direction on the outer periphery of the frame and forming the deformed portion on the same surface as the bottom surface of the spacer or more distant from the mounting base material than this bottom surface, it is possible to achieve a higher standard than the speaker main body. The frame can be mounted even in a small-diameter mounting hole. In this case, since the screwing hole (or the pilot hole for screwing) of the mounting base material is formed near the edge of the small-diameter mounting hole, The distance becomes shorter. Therefore, in this case, it is preferable that the spacer is provided with a convex portion that is inserted into the cutout portion of the frame, and the mounting hole is formed in the convex portion.

Further, the heads of the mounting screws inserted into the mounting holes of the spacer are located in the recesses of the spacer so as not to interfere with the speaker body, so that the screws for mounting the spacer do not interfere with the speaker body.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a speaker body S1 of a speaker of the present invention, (a) is a vertical sectional view,
(B) is a bottom view showing a half. Note that FIG. 1A is a cross-sectional view taken along the line AOA of FIG. Also, FIG.
2A shows a spacer, FIG. 2A shows a bottom view of the upper half viewed from the rear side, the lower half of the drawing shows a front view viewed from the mounting side of the speaker body, and FIG. Figure 2
It is sectional drawing of the BOB line of (a). The speaker of the present invention comprises a speaker body S1 shown in FIG. 1 and a spacer P shown in FIG. Note that FIG.
The speaker main body S1 shown in (1) is manufactured according to the standard of 16 cm in diameter.

Speaker body S1 shown in FIGS. 1 (a) and 1 (b)
The base frame 20 made of a light metal alloy is combined with the base of a frame 21 made of synthetic resin. As shown in FIG. 1B, the frame 21 has ribs L extending radially. In the portion of the rib L on the opening edge portion 21a side, one side portion is a defective portion La that is removed by the slope. Between the ribs L adjacent to each other, the cutout portion K1 faces the defective portion La, and the cutout portion K2 faces the parallel portion Lb of the rib L without the cutout portion La. Therefore, the space W1 of the space on the side of the opening edge portion 21a in the cutout portion K1 is equal to the opening edge portion 2 in the cutout portion K2.
It is formed sufficiently larger than the space W2 of the space on the 1a side. Further, the cutouts K1 and the cutouts K2 are arranged alternately in the circumferential direction around the central axis O of the frame.

As shown in FIG. 1A, in each rib L,
A flat surface F is formed as a deforming portion that deforms concavely toward the central axis O direction. The flat surface F is a surface orthogonal to the central axis O. In FIG. 1 (a),
The frame 21 and the base frame 20 on the base side of the flat surface F have tapered outer surfaces.

A cone-shaped vibrating plate 22 is provided in the frame 21, and an end portion of a conical bottom portion 22a of the vibrating plate 22 is joined to a joint portion 21a3 of an opening edge portion 21a of the frame 21 via a deforming joint portion 23. The outer periphery of the conical head portion 22b of the diaphragm 22 is joined to the support step portion 21b of the frame 21 via a damper plate 24 having multiple wavy deformation portions in concentric circles with the center line OO as the central axis. It is fixed. A cylindrical bobbin 25 is joined to the diaphragm 22, and voice coils C1 and C2 are wound around the bobbin 25.

A magnetic field generator (a) is held in the base frame 20. The magnetic field generator (a) includes an opposed yoke 26 located on the inner peripheral side of the bobbin 25, a support yoke 27 located on the outer peripheral side, a pair of ring-shaped magnets 27 a held on the inner peripheral surface of the support yoke 27, 27a. Each ring-shaped magnet 27a, 27a and the opposing yoke 2
The voice coils C1 and C2 are located in the gap facing the voice coil 6.

A grille frame 28 is fitted around the opening edge 21a of the frame 21. The grill frame 28 is
It is inserted from below the speaker frame 21. A ring-shaped raised portion 21a2 is formed on the opening edge 21a of the frame 21.
And a thin-walled portion 21a1 located outside thereof are formed,
A thin portion 28a formed on the inner circumference of the grill frame 28 is fitted below the thin portion 21a1 so that the bottom surface of the opening edge portion 21a of the frame 21 and the bottom surface of the grill frame 28 are substantially flush with each other. Be combined.

A ring-shaped groove 28b is formed on the front surface of the grill frame 28, and the edge of the grill 29 is fitted into the groove 28b. The grill 29 is attached as needed. When the grill 29 is attached, the sounding portion of the speaker body S1 is covered and protected by the grill 29, and the front surface of the speaker is made up by the grill 29.

As shown in FIG. 1B, the speaker body S
1, the opening edge 21a of the frame 21 and the grille frame 28
Mounting holes Ha and Hb are formed at the fitting boundary portion between and.
That is, most of the inner peripheral walls of the mounting holes Ha and Hb are the frame 21, and the remaining part is formed by the grill frame 28. The mounting hole Ha has the cutout portion K.
The mounting hole Hb is arranged at the center of the width direction 1 and the mounting hole Hb is arranged at the center of the notch K2 in the width direction. Therefore, the mounting holes Ha are provided at an angle of 90 degrees, and the mounting holes Hb are also provided at an angle of 90 degrees. The mounting holes Ha formed at four locations and the mounting holes Hb also formed at four locations are all formed at the same radial distance from the central axis O of the speaker body (frame). The inner diameters of the mounting holes Ha and Hb are exactly the same. That is, the mounting holes Ha and Hb are
The reference numerals are given separately depending on whether the mounting holes Ha and Hb face the notch K1 or the notch K2.
The radial or diametrical arrangement position and the inner diameter dimension are the same.

First, the speaker body S1 can be mounted on the mounting base material 10 without using the spacer P shown in FIG. The mounting hole 10a formed in the mounting base material 10 shown in FIG. 1 (a) is formed according to the standard so that the speaker body S1 having a diameter of 16 cm can be mounted, and the mounting hole 10a shown in FIG. Is the same as.
That is, the inner diameter Wa of the mounting hole 10a is approximately 14.5c.
With m, a screw hole (or pilot hole) for screwing the mounting screw B1 1
The diametrical distance Wb passing through the center of 0b is approximately 15.6c.
m. When the speaker main body S1 is mounted in the mounting hole 10a of 16 cm standard, a plurality of mounting holes Ha and Hb are selected, the mounting screws B1 are inserted into the mounting holes Ha or Hb, and the mounting base material 10 is screwed. It is screwed into the hole 10b.

The spacer P shown in FIG. 2 is made of a light metal material or a synthetic resin material, and the bottom surface 31 of the ring-shaped body 30 is a flat surface. The thickness t1 of the ring-shaped main body 30 and the lower surface and the flat surface (deformed portion) of the opening edge portion 21a of the frame 21 of the speaker main body S1 shown in FIG.
The step depth t2 with F is almost the same. Therefore, FIG.
As shown in (a) and the like, when the spacer P is fitted on the outer periphery of the frame 21, the ring-shaped main body 3 of the spacer P is
The bottom surface 31 of 0 and the flat surface F of the frame 21 are substantially the same surface (designed same surface).

The structure of the fitting portion between the spacer P and the speaker body S1 will be described. As shown in FIG. 2A, the convex portion T1 and the convex portion T2 are alternately arranged on the inner peripheral surface of the ring-shaped main body 30. Is formed in. The protrusions T1 are formed at four locations with an angle distribution of 90 degrees, and the protrusions T2 are also formed at four locations with an angle distribution of 90 degrees. One convex portion T1 has arcuate portions r at both edges,
The width W in the circumferential direction is the space W1 of the space on the opening edge side of the notch K1 between the ribs L of the speaker body S1.
Almost matches. The other convex portion T2 has a substantially triangular planar shape, and its width W in the circumferential direction substantially coincides with the space W2 of the space of the cutout portion K2 of the speaker body S1.

FIG. 3 shows the frame 21 of the speaker body S1.
It is a perspective view which shows the relationship of the fitting part of the spacer P. In FIG. 3, the structure of the opening edge portion 21a of the frame 21 and the shape of the grill frame 28 are simplified and shown. The spacer P is fitted to the speaker body S1 from the back side.
At this time, the protrusion T1 of the spacer P is fitted so as to enter the notch K1 of the frame 21, and the protrusion T2 is notched K2.
The speaker body S1 and the spacer P are fitted to each other only when they are fitted into each other, and the bottom surface 3 of the spacer P is
1 and the flat surface (deformation portion) F of the frame 21 can be combined so as to be the same surface. That is, the speaker body S1 and the spacer P have a fitting portion that is fitted only when they are combined in a fixed fitting phase.

In the ring-shaped body 30 of the spacer P, screw holes ha and through holes hb are alternately formed. The screw holes ha are provided in an angular arrangement of 90 degrees, and when the frame 21 of the speaker body S1 and the ring-shaped body 30 of the spacer P are fitted to each other, as shown in FIG.
Is the mounting hole Ha formed in the speaker body S1
It will be the position that matches. That is, the center O of the screw hole ha
Is formed at the same position as the radial distance of the mounting hole Ha. However, the screw holes ha are the mounting holes Ha.
It is a smaller diameter hole.

Further, the insertion hole hb is located at the same position as the mounting hole Hb of the speaker body S1 when the speaker body S1 and the spacer P are fitted together as shown in FIG. That is, the insertion hole hb and the mounting hole Hb have the same radial distance from the center O. The inner diameter of the insertion hole hb is the same as the inner diameter of the mounting hole Hb. Further, in the ring-shaped main body 30 of the spacer P, mounting holes hc are formed in the arcuate portions r on both edges of the convex portion T1. The radial distance from the center O of the mounting hole hc is shorter than the radial distance from the center O of the insertion hole hb or the like. Further, as shown in FIGS. 2B and 3, in the ring-shaped main body 30 of the spacer P,
A recess 32 is formed above the mounting hole hc and has a depth so that the screw head of the mounting screw can be hidden.

Further, the convex portion T2 of the spacer P is provided with an elongated hole-shaped mounting hole hd extending in the radial direction. The mounting hole hd is formed at a position where the radius from the center O is shorter than the mounting hole hc, that is, on the inner peripheral side. As shown in FIGS. 4 (a) and 6 (a), when the speaker body S1 and the spacer P are fitted together, the convex portion T2 enters into the notch K2 of the spacer P, so that the mounting hole hd is also It can enter the inside of the frame 21. Further, in the spacer P, a recess 33 having a depth that hides the head of the mounting screw is formed above the portion where the mounting hole hd is formed.

FIG. 4 shows a first mounting example in which the speaker body S1 is mounted using the spacer P. 4A is a cross-sectional view, FIG. 4B is a bottom view,
FIG. 4A is a cross-sectional view taken along the line AOA of FIG. The mounting base material 10 shown in FIG. 4 (a) is the same as that shown in FIGS. 1 (a) and 7, and the mounting hole 10a has 16 holes.
The mounting hole 10a has an inner diameter Wa of 14.5 cm. A screw hole 10b into which the mounting screw B2 is screwed in the mounting base material 10 is also formed at the same position as in FIG. 1 (a). FIG. 4 shows a standard mounting part to which a 16 cm speaker is mounted, but in this example, a 16 cm standard speaker main body S1 is mounted by a spacer P so as to be lifted by t1 from the mounting base material 10. ing. The use of the spacer P is effective, for example, when the mounting space (mounting depth) on the lower side of the mounting base material 10 in the figure is shallow and the depth dimension D2 of the speaker body S1 is large. By floating the main body S1, it is possible to attach the speaker main body S1 having a large depth dimension D2 to the mounting portion having a shallow depth.

The speaker body S1 and the spacer P are fitted together as shown in FIG. 3, and the convex portion T1 and the cutout portion K1 and the convex portion T2 and the cutout portion K2 are fitted together. The spacer P includes the opening edge 21a of the frame 21 and the mounting base material 1
It is inserted between 0s. When the speaker main body S1 and the spacer P are fitted together, the mounting hole Hb formed in the speaker main body S1 and the insertion hole hb of the spacer P having the same diameter as the mounting hole Hb coincide with each other. Therefore, as shown in FIG. 4A, the mounting screws B2 having a long dimension are inserted through the four mounting holes Hb and the insertion holes hb, and the mounting base material 10 is inserted.
Is screwed into the screw hole 10b. In the example of FIG. 4, the frame 21 of the speaker body S1, the grill frame 28, and the spacer P are all fixed together by the same mounting screw B2.

FIG. 5 shows a second mounting example in which the speaker body S1 is mounted using the spacer P. Figure 5
5A is a sectional view, and FIG. 5B is a bottom view. Note that FIG. 5A is a cross-sectional view taken along the line AOA of FIG. In the mounting example shown in FIG. 5A, the mounting base material 13 is
(A) and FIG. 4 (a). In FIG. 5A, the mounting hole 13a has a slightly smaller diameter, and its inner diameter Wd is about 12.9 cm. The distance We in the diametrical direction at the position where the screw holes 13b for the mounting screw B3 in the mounting base material 13 are formed is 14.2 cm.

Since the inner diameter Wd of the mounting hole 13a is small, in the case of the conventional 16 cm standard speaker body Sa shown in FIG. 7, the tapered outer peripheral surface of the frame may not completely fit into the mounting hole 13a. . However, in the present invention, with the spacer P fitted on the outer periphery of the frame 21 of the speaker main body S1, the frame 21 has a flat surface (deformation portion) F, which is substantially the same surface as the bottom surface 31 of the spacer P, as an escape portion. Has been formed. Therefore, the frame 21 can be securely mounted without interfering with the edge of the mounting hole 13a.

As a mounting method, first, the spacer P is installed on the mounting base material 13, and the mounting screws B3 are attached to a plurality of positions (for example, four positions) of the mounting holes hc formed in the spacer P.
Is inserted and screwed into the screw hole 13b of the mounting base material 13,
The spacer P is fixed. Next, the frame 21 of the speaker body S1 is fitted into the spacer P, at this time, a mounting screw (connecting screw) B4 is inserted into the mounting hole Ha of the speaker body S1, and is screwed into the screwing hole ha of the spacer P, As a result, the speaker body S1 is fixed to the spacer P. Since the head of the mounting screw B3 screwed to the mounting base material 13 is located in the recess 32 of the spacer P, the opening edge 21a of the frame 21 of the speaker body S1 is installed on the spacer P. The head of the mounting screw B3, the speaker body S1
There is no hit.

FIG. 6 shows a speaker body S using a spacer P.
The 3rd example of attachment which attaches 1 is shown. Figure 6 (a)
Is a cross-sectional view, FIG. 6B is a bottom view, and FIG. 6A is a cross-sectional view taken along the line AA-A of FIG. 6B. The mounting hole 14a formed in the mounting base material 14 shown in FIG. 6 (a) has a smaller diameter than the mounting hole 13a formed in FIG. 5 (a). For example, the mounting hole 14a conforms to a standard for mounting a speaker having an outer shape of 13 cm,
The mounting hole 14a has an inner diameter Wf of 12.3 cm, and the mounting screw B5 is screwed to the mounting base material 14 so that the mounting hole 14a can be screwed.
The diametrical arrangement distance Wg of b is 13.28 to 14.4.
The range is 8.

In FIG. 6, although the diameter of the mounting hole 14a is extremely small, the lower surface 31 of the spacer P with the spacer P fitted on the outer periphery of the frame 21 of the speaker body S1.
Since the flat surface (deformation portion) F serving as the escape portion of the frame 21 is substantially the same surface, the frame 21 is attached to the mounting hole 14a.
Does not interfere with the edges.

The mounting method is as follows. First, the spacer P is installed on the mounting base material 14, the mounting screws B5 are inserted into the four mounting holes hd in the shape of long holes, and the mounting holes 14b of the mounting base material 14 are screwed. The spacer P is attached and fixed. Next, the speaker body S1 is fitted into the spacer P, mounting screws (connecting screws) B4 are inserted into the four mounting holes Ha of the speaker body S1, and screwed into the screw holes ha of the spacer P. , The speaker body S1 is fixed to the spacer P. The mounting base material 1
The head of the mounting screw B5 screwed to the connector 4 is located in the recess 33 of the spacer P, and the speaker body S is attached to the spacer P.
When 1 is installed, the head of the mounting screw B5 does not hit the frame 21 of the speaker body S1.

In the speaker of the present invention, as shown in FIG. 3, when the speaker body S1 and the spacer P are fitted together, the protrusion T2 of the spacer P is inside the notch K2 of the frame 21 of the speaker body S1. Since a long hole-shaped mounting hole hd extending in the radial direction is formed in this convex portion T2, it can be mounted even if the screwing hole 14b of the mounting base material 14 is located at the inner peripheral position considerably. Is.

In the above configuration example, the flat surface F is formed as a concave deformed portion on the outer surface of the frame 21, and the flat surface F is the same surface as the bottom surface 31 of the spacer P. The surface (deformation portion) F does not necessarily have to be the same surface as the bottom surface 31, and is not limited to the one shown in FIG.
In the installed state of (a), the flat surface F may be escaped so as not to hit the mounting base materials 13 or 14. Therefore, the deformed portion does not necessarily have to be the flat surface F orthogonal to the central axis O, and may be a slightly tapered surface.

[0042]

As described above, according to the present invention, the speaker main body can be mounted and fixed to the mounting portion that does not originally meet the dimensional standard. In particular, since the frame of the speaker body is provided with the deformable portion, it can be mounted in a mounting hole having a small diameter. Further, by using a plurality of sets of mounting holes provided in the spacer, it is possible to mount a speaker main body of a certain standard on any mounting part of any standard.

[Brief description of drawings]

FIG. 1 shows a speaker body of the present invention,
(A) is sectional drawing which shows the state which the speaker main body was independently mounted, (b) is a half bottom view of a speaker main body. Note that (a) is a cross-sectional view taken along the line A-A-A in (b).

FIG. 2A shows a spacer, the upper half of which is a bottom view, the lower half is a front view, and FIG. 2B is a BO of (a).
It is a sectional view taken along the line B.

FIG. 3 is a partial perspective view showing a fitting portion between a frame and a spacer of the speaker body,

4A and 4B show a first mounting example of a speaker main body using a spacer, FIG. 4A is a sectional view, and FIG. 4B is a half bottom view.
(A) is sectional drawing of the AOA line of (b).

5A and 5B show a second mounting example of a speaker main body using a spacer, FIG. 5A is a sectional view, and FIG. 5B is a half bottom view.
(A) is sectional drawing of the AOA line of (b).

6A and 6B show a third mounting example of a speaker main body using a spacer, FIG. 6A is a sectional view, and FIG. 6B is a half bottom view.
(A) is sectional drawing of the AOA line of (b).

FIG. 7 is a cross-sectional view showing a state where a conventional speaker body is attached to an attachment base material.

[Explanation of symbols]

10, 13, 14 Mounting base material 10a, 13a, 14a mounting holes 10b, 13b, 14b screwing holes 21 frames 21a Opening edge 28 grill frame 31 Bottom of spacer 32, 33 recess B1, B2, B3, B5 mounting screws B4 mounting screw (connecting screw) F Deformation part (flat surface) Ha, Hb Speaker mounting hole ha Spacer screw holes hb Spacer insertion hole hc, hd Spacer mounting hole P spacer L rib K1, K2 notch T1, T2 convex part

Claims (4)

(57) [Claims] 1. A speaker main body having a frame in which a mounting hole having a predetermined distance from the center is formed in an opening edge portion, and a ring-shaped spacer interposed between the opening edge portion of the frame and a mounting base material. The frame and the spacer each have a fitting portion for fitting with each other, and the spacer has a mounting hole formed at a distance from the center different from that provided in the opening edge portion of the frame. A speaker characterized by being. 2. A deformed portion directed toward the center is formed on the outer periphery of the frame, and the deformed portion is flush with the bottom surface of the spacer or from the mounting base material rather than the bottom surface when the frame and the spacer are fitted together. The speaker according to claim 1, wherein the speaker is located on a remote side. 3. The spacer is formed with a convex portion that fits into a cutout portion formed in the frame, and a mounting screw inserted into a mounting hole of the frame with the convex portion and the cutout portion fitted together. The spacer according to claim 1 or 2, which can be screwed onto the spacer. 4. The speaker according to claim 3, wherein a mounting hole to the mounting base material is formed in the convex portion of the spacer.