JP2003299171A - Speaker unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a speaker unit which enables stabilized fixing of a speaker cabinet regardless of the length of fixing screws for fixing the speaker cabinet to a stand. <P>SOLUTION: The speaker cabinet 1 is fixed to the stand 3 by arranging an inner box 14 near the bottom plate 1a of the speaker cabinet 1 which constitutes the speaker unit, and pressing an attaching board 5 which elasticity is given to and driving nuts (rasp-cut nuts) are knocked into, in the direction of the bottom plate 1a in the inner box 14. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device, and more particularly to a speaker device suitable for fixing a speaker cabinet to a predetermined position such as a stand.

[0002]

2. Description of the Related Art Various methods have been proposed for fixing a stand and the like to a speaker cabinet in a conventional speaker device, but since the speaker cabinet is generally made of wood or synthetic resin, In order to attach the same to the speaker cabinet, a driving nut such as a demon nut is driven into the bottom plate of the speaker cabinet in the case of a wood cabinet, and an embedded nut or the like is embedded in the case of a resin cabinet.

In the following, the present invention will be described as a driving nut including the above-mentioned onime nut and embedded nut.

FIG. 4 is a longitudinal sectional view for explaining a method of mounting a stand on a speaker cabinet of a conventional speaker device using wood, and FIGS. 5A and 5B are for explaining a screw tightening method. The A section enlarged view of FIG. 4 is shown.

In FIG. 4, a speaker cabinet is provided on a bottom plate 1a of a speaker cabinet 1 having a baffle board on the front surface, a rectangular parallelepiped box-shaped body made of a plate material such as wood, and a speaker (not shown) built therein. It is fixed to a blanket 4 of a stand 3 which holds 1 at a predetermined height position.

A driving nut 2 constituting a driving nut is driven into a position of the through hole 10 of the bottom plate 1a of the speaker cabinet 1 through a mounting plate 5 having a substantially rectangular shape. The driving nut 2 is generally provided in order to prevent the sound quality from aging due to sound leakage inside the speaker cabinet 1.
As shown in (A) and (B), a bag-shaped driving nut 2 having a driving nut bottom 7 is used. As the embedded nut embedded in the resin speaker cabinet 1, the cap nut is also used for the above reason.

The bag-shaped driving nut 2 has a bottomed cylindrical metal member having an internal diameter having a predetermined pitch and a cylindrical outer diameter provided with sawtooth-shaped teeth. Will bite into the wood and be firmly fixed.

When mounting the stand 3 on the speaker cabinet 1, the bracket 4 for the stand having the through hole 11 corresponding to the mounting position of the driving nut 2 is selected, and the screw 6 having the same diameter and the same pitch as the driving nut 2 is selected. If selected and screwed into the driving nut 2, the speaker cabinet 1 is attached to the bracket 4 of the stand 3 as shown in FIG.
Can be attached.

As described above, there is an optimum recommended example for the combination of the speaker device and the stand 3 of each maker, and the length of the screw 6 is a dimension unique to each maker.

However, in reality, the pitches and screw diameters of the screws 6 recommended by each manufacturer are often the same, and there are various combinations, but the length of the screws 6 and 5
The length of the effective screw length L from the effective screw starting point 9 of the driving nut 2 shown in (A) to the driving nut bottom 7 is different for each speaker device.

[0011]

According to the conventional speaker device, the length (effective screw length) of the driving nut 2 and the stand 3 which are driven into the bottom plate 1a of the speaker cabinet 1.
Since the length of the screw 6 for fixing the speaker cabinet 1 to the speaker cabinet 1 is different for each maker, there is a limit to the combination of the speaker device of different makers and the stand 3.

That is, as shown in FIG. 6A, when the screw length of the screw 6 used for the driving nut 2 is short, the tip of the screw 6 does not reach the effective screw starting point 9 of the driving nut 2, or The screw 6 may have only one or two threads, and the tightening may be incomplete.

Further, as shown in FIG. 6B, when the screw 6 to be used has a long screw length, the tip of the screw 6 comes into contact with the driving nut bottom 7 and the screw 6 can be tightened further. It's gone.

The present invention has been made in order to solve the above problems. The problem to be solved by the present invention is that the tightening of the driving nut 2 is incomplete even when the screw 6 has a short screw length. An object is to obtain a speaker device that can be improved.

[0015]

The speaker device of the present invention is a driving nut mounted on the bottom plate of a speaker cabinet.
An elastic member is provided on the (onime nut) so that the position of the driving nut can be moved according to the state where the driving nut is not completely caught or the screw tip comes into contact with the driving nut bottom. .

According to the speaker cabinet for the speaker device of the present invention, the screw tightening state of the stand 3 for fixing the speaker cabinet 1 is improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a speaker device of the present invention will be described below in detail with reference to FIGS. FIG. 1 (A) is a front perspective view showing an embodiment of the speaker device of the present invention, and FIG. 1 (B) is a similar rear perspective view thereof.
(A) and (B) are driving nut fixing members and their mounting explanatory views, FIG. 3 (A) is a rear view showing another embodiment of the speaker device of the present invention, and FIG. 3 (B) is that of FIG. 3 (A). It is an AA cross-section arrow line view.

1 (A) and 1 (B), a speaker device is provided at the lower end of the speaker cabinet 1 on the rear plate 18 side, which is formed of wood or a synthetic resin material into a substantially rectangular box shape. As shown in FIG. 1B, a substantially rectangular opening 19 is formed on the lower side of the back plate 18, and a box-shaped inner box 14 extending in the direction of the baffle board 17 is formed.

FIG. 2B is a sectional view of the inner box 14 as viewed from the opening 19 side.

The inner box 14 includes the left and right side plates 20.
L, 20R, the upper plate 13, and a back plate 21 (see FIG. 3B) arranged in the depth direction to face the opening 19.

In the inner box 14, FIG.
As shown in (A) and FIG. 3 (B), a driving (demon eye) nut fixing member 22 is arranged so as to be vertically movable.

The driving nut fixing member 22 is made of wood or the like and has a substantially rectangular shape, and a speaker cabinet that is opposed to the mounting hole 11 of the bracket 4 of the stand 3 on the mounting plate 5 made of a plate material having the knob 15 on the opening 19 side. A plurality of bag-shaped driving nuts (demon nuts) 2 are driven in positions facing the through holes 10 formed in the bottom plate 1a of FIG. 1, and springs 12 are fixed to the left and right ends of the back surface of the mounting plate 5. Although the material and type of the spring 12 are not particularly specified, a leaf spring, a coil spring, a resin or rubber having elasticity can be mainly used.

The spring 12 is required to have a predetermined strength, but if the spring 12 is too strong, the user cannot tighten the screw 6, so the size and weight of the speaker device may be taken into consideration.

Further, the method of fixing the spring 12 to the mounting plate 5 is not particularly specified, and it can be fixed mainly by using screws, nails, tackers and the like.

In the above structure, the driving nut fixing member 22 assembled as described above is installed in the speaker cabinet 1.
The knob 15 is inserted into the inner box 14 of FIG. 1 so as to protrude from the opening 19, and then the knob 15 is inserted.
As shown in FIG. 6, the mounting plate 5 of the driving nut fixing member 22 is pressed against the biasing force of the spring 12 and the knob 15 is pressed downward as indicated by arrow B.

Next, the stand 3 attached to the speaker device
And fixing screws 6 through holes 11 of blanket 4
And a through hole 10 formed in the bottom plate 1a of the speaker cabinet 1.
2 and by screwing it into the driving nut 2.
As shown in (B), the mounting plate 5 can be brought into pressure contact with the upper surface of the bottom plate 1a.

When the screw length of the screw 6 for fixing the stand 3 to the above speaker device is short and the tip of the screw 6 does not reach the effective screw starting point of the driving nut 2, the mounting plate as shown in FIG. 2B. The screw 6 can be screwed onto the driving nut 2 by sliding the tip of the screw 6 to a position where the effective screw starting point 9 of the driving nut 2 is reached.

As shown in FIG. 3B, a driving nut fixing member 22 on the bottom plate 1a of the speaker cabinet 1 is also provided.
If the height H to the driving nut bottom 7 driven in is set to be larger than the screw having the longest screw length in advance, the speaker device and the stand 3 can be fixed even when the long screw 6 is used.

3A and 3B are a rear view of the speaker device and a sectional view taken along the line AA of FIG. 3A. Figure 2
In (A) and (B), the inner box 14 is attached to the left and right side plates 20L,
The case in which the speaker cabinet 1 is configured in a box shape by the 20R, the upper plate 13, and the back plate 21 has been described, but as shown in FIG. 3B, the rear plate 18 and the inner box 14 of the speaker cabinet 1 are The upper plate 13 may be detachable with screws or the like, and the mounting plate 5 may be fixed to the bracket 4 of the stand 3 and then the upper plate 13 may be screwed and then the rear plate 18 may be fixed to the speaker cabinet 1.

Further, the opening 19 of the inner box 14 is formed on the side of the baffle board 17, and the inner box 1
4 can also be used as a bass reflector for bass enhancement. In this case, the back plate 21 may be omitted, and a through hole or the like may be formed in the back plate 21. Further, the knob 15 should be foldable or detachable so that after the stand 3 is fixed to the mounting plate 5, the knob 15 can be folded into the opening 19 or separated so that the knob does not protrude to the outside from the opening 19. You can also

Further, in a small speaker device in which the speaker cabinet 1 is made of synthetic resin or the like, an embedded nut such as a bag nut is embedded in the mounting plate 5 instead of the drive nut, and the drive nut fixing member 22 is replaced. It is obvious that the embedded nut fixing member may be configured. or,
When the driving nut fixing member 22 is slid up and down in the inner box 14, there is no concern about sound leakage of the speaker cabinet 1. Therefore, it is not necessary to use a driving nut having a driving nut bottom 7 or a bag type embedded nut. It is possible to obtain a product that does not cause any problems even if the length becomes long.

[0032]

According to the present invention, an opening is formed in a baffle board to form an inner box or bass reflex duct, and a plate-shaped mounting plate is slidably arranged in the inner box or bass reflex duct. Set up. A mounting nut (demon nut, embedded nut) is arranged on the mounting plate, and the mounting plate is made to have elasticity so that the speaker device is fixed to the stand via the mounting plate. Regardless of the length, pressing the mounting plate downwards inside the inner box or bass reflex duct allows the screw to be screwed into the push-in nut against the biasing force of the spring, so that it can be firmly screwed by the spring effect. It can be worn and the screw threads required for fixing can be secured.

[Brief description of drawings]

FIG. 1 is front and rear perspective views showing an embodiment of a speaker device of the present invention.

FIG. 2 is a front view of a driving nut fixing member used in the speaker device of the embodiment of the present invention and an operation explanatory diagram thereof.

FIG. 3 is a rear view for explaining another embodiment of the speaker device of the present invention and a sectional view taken along the line AA of FIG. 3A.

FIG. 4 is a vertical sectional view for explaining a fastening state of a conventional speaker device and a stand.

5 is an enlarged view of part A in FIG.

FIG. 6 is a sectional view of relevant parts for explaining a fastening state of a conventional speaker device and a stand.

[Explanation of symbols]

1 ··· Speaker cabinet, 1a ··· Bottom plate, 2 ··· Driving nut (demon nut), 3 ·· Stand, 4 ·· Bracket, 5 ·· Mounting plate, 12 ··· Spring, 14 ·· Inner box, 15 ‥‥Knob,

Claims (4)

[Claims] 1. A speaker device adapted to fix a cabinet to a predetermined position through a plate member having a driving nut fixed to the bottom plate of the cabinet, wherein the plate member is elastic with respect to the bottom plate of the cabinet. A speaker device, which is mounted via a member. 2. The speaker device according to claim 1, wherein the plate-shaped member is pivotally mounted in a box provided in the vicinity of the bottom plate of the cabinet so as to be swingable. 3. The speaker device according to claim 1, wherein the plate-shaped member is provided with a handle protruding from the inside of the box. 4. The speaker device according to claim 2, wherein the box is also used as a bass reflex duct.