JP2006295448A - Speaker device and sound way forming method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker device where a sound way of certain length required for attenuating a middle-pitched/high-pitched sound and improving a low-pitched sound in sound quality is set simple in structure and can be easily assembled. <P>SOLUTION: Two or more first plate-like members 114 are provided on the internal wall 11b of a speaker box 1, protruding upright, two or more second plate-like members 31 are provided on an internal member 3 alternating with the first plate-like members 124 while protruding upright, the internal member 3 is arranged so as to cover the first plate-like members 114, and a zigzag sound way A which keeps the back space a1 of the speaker 2 communicating with an outside space a4 is formed through the intermediary of an opening 12a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a speaker device, and more particularly to an internal structure of a speaker device that forms a sound path for increasing the volume of a low sound range and a sound path forming method.

  In order to increase the volume of the low frequency range, for example, a speaker device includes a so-called bass reflex speaker in which a speaker box is provided with a pipe communicating with the inside so that sound from the back of the speaker is emitted outside (for example, Patent Documents). 1).

  In addition, there is a speaker system in which a long sound path communicating with the outside is formed in the speaker box, and the sound quality in the low frequency range is improved by attenuating middle and high sounds among the sounds from the back of the speaker (see, for example, Patent Document 2).

  As a means for increasing the volume of the low frequency range in the speaker device as described above, means for communicating the inside and outside of the speaker box is widely known.

JP-A-4-280600 (second page, FIG. 1) JP-A-11-252672 (second page, FIG. 2)

  As exemplified in the latter, it is preferable to form a long sound path communicating with the outside in the speaker box in order to attenuate the mid-high sound and improve the sound quality in the low frequency range, however, the increase in the number of parts, The accompanying increase in the number of manufacturing processes and the number of assembly processes is inevitable.

  On the other hand, with the means for providing the pipe as exemplified in the former, in the limited space in the speaker box, the length of the sound path required to attenuate the mid-high sound among the sounds from the back of the speaker is secured. Was difficult.

  Therefore, the present invention has been made in view of such circumstances, and an object thereof is to provide a speaker device and a sound path formation method that can solve the above-described problems.

In order to achieve the above technical problem, the speaker device according to the present invention has the following technical means.
That is, in the speaker device according to claim 1, an inner member is disposed in the speaker box, and the sound path that connects the rear portion space of the speaker and the external space between the inner wall of the speaker box and the inner member. Is formed.
According to a second aspect of the present invention, there is provided a speaker device according to the first aspect, wherein a plurality of first plate-like members project from the inner wall of the speaker box at a predetermined interval, and the inner member includes the first plate-like member. A plurality of wall portions configured to be mounted and projecting from the wall portions so as to be alternately stepped from the first plate-like member at a predetermined interval with the wall portions constituting the inner member. A second plate-like member, and a speaker rear space and an outer space, the first plate-like member, the inner wall of the speaker box projecting from the first plate-like member, and the inner member. A zigzag-shaped sound path that communicates with each other is formed.
According to a third aspect of the present invention, there is provided the speaker device according to the first or second aspect, wherein an opening communicating with the outside is provided on a side of the speaker.
According to a fourth aspect of the present invention, there is provided the speaker device according to the second or third aspect, wherein the first plate-like member is provided on an inner wall of the speaker box facing the speaker installation surface, and the second plate-like member projects. A back space of the speaker is formed by a surface opposite to the protruding surface of the wall portion provided and an inner wall of the speaker box.
A speaker device according to a fifth aspect of the present invention is the speaker device according to any one of the second to fourth aspects, wherein the speaker box includes a back cabinet in which the first plate-shaped member is integrally formed, and a front panel in which the speaker is disposed. Thus, the inner member is characterized in that the wall portion and the second plate-shaped member are integrally formed and inserted into the back cabinet.
According to a sixth aspect of the present invention, there is provided a sound path forming method in which an inner member is disposed in a speaker box, and an inner path of the speaker box and the inner member are used to communicate the back space of the speaker and the external space. It is characterized by forming.

  According to the present invention, a plurality of first plate-like members protrude from the inner wall of the speaker box, and the plurality of second plate-like members protrude from the wall portion so as to be alternately stepped with the first plate-like member. The inner member is disposed so as to cover the first plate member, and the first plate member, the inner wall of the speaker box on which the first plate member is projected, and the inner member Since the zigzag sound path that connects the speaker back space and the external space is formed, the required length of the sound path from the back of the speaker is attenuated to improve the sound quality in the low frequency range Can be formed with a simple structure.

  Moreover, the first plate-like member is integrally formed with the back cabinet, and in addition, by using the inner member in which the second plate-like member and the wall portion are integrally formed, it is possible to assemble very easily without increasing the number of parts. .

Next, an embodiment of a speaker device according to the present invention will be described. In the figure, reference numeral 1 denotes a speaker box, and reference numeral 3 denotes an inner member.
The speaker device according to the present embodiment includes a speaker box 1, a speaker 2, and an inner member 3.

The speaker box 1 includes a back cabinet 11 and a front panel 12.
The back cabinet 11 is formed in a box shape with one side opened, and bosses 112 and 113 (an upper boss 112 and a lower boss 113 provided with screw holes 111 at substantially four corners on the opening side). ) Are integrally molded. Of these, the lower boss 113 is formed in a stepped shaft shape with a reduced diameter at the tip, and the reduced diameter portion 11a is inserted into the mounting hole 3c of the inner member 3 to be described later. It has become.

  Further, as shown in FIGS. 2 and 3, the inner wall 11b opposite to the opening side of the back cabinet 11 has a plurality of first walls extending in a substantially horizontal direction at a predetermined interval in the vertical direction of the inner wall 11b. One plate-like member 114 is integrally formed with the back cabinet 11. As shown in FIG. 4, the first plate-like member 114 is also connected to the left and right inner walls 11c adjacent to the inner wall 11b by integral molding.

  In addition, on the left and right inner walls 11c, a concave guide member 115 extending in a substantially horizontal direction is located at the center between the first plate members 114 and at a position above the uppermost first plate member 114. It protrudes so as to be juxtaposed with the first plate-like member 114. The guide member 115 is integrally formed with the left and right inner walls 11c adjacent to the inner wall 11b.

  As shown in FIGS. 1 and 2, the front panel 12 has a central portion extending in a mortar shape toward the inside, the bottom portion of the mortar shape is opened, and the speaker 2 is fixed from the inside. It is formed in the shape of a band plate in which an opening 12 a having a substantially rectangular shape in front view is formed below the speaker 2.

  The peripheral portion of the front panel 12 and the peripheral portion on the opening side of the back cabinet 11 are formed so as to be fitted to each other, and at the same time the opening side of the front panel 12 and the back cabinet 11 is fitted, The bosses 112 and 113 of the back cabinet 11 are brought into contact with the back surface of the front panel 12, and the screws 4 are screwed into the screw holes 111 provided in the bosses 112 and 113 from the front surface side of the front panel 12. 12 is fixed to the back cabinet 11.

As shown in FIGS. 2 to 4, the inner member 3 is formed in a substantially box shape with the front panel 12 side and the upper part opened, and on the back surface of the wall 3a opposite to the front panel 12 side, A plurality of second plate-like members 31 protrude in a substantially horizontal direction with the same pitch as the pitch of the guide members 115 provided in the cabinet 11. Further, the projecting piece 3b provided with the mounting hole 3c is suspended from both sides of the bottom portion on the front panel 12 side so as to engage with the reduced diameter portion 11a of the lower boss 113 provided in the back cabinet 11.
The plurality of second plate members 31 are integrally formed with the wall 3a.

  The inner member 3 has a required width dimension such that the left and right outer walls 3d of the inner member 3 are in close contact with the left and right inner walls 11c of the back cabinet 11, and the guide member 115 provided in the back cabinet 11 and the first member Both ends of the two plate-like members 31 are fitted, and a reduced diameter portion 11a having a reduced diameter on the lower side provided in the back cabinet 11 is inserted into an attachment hole 3c provided in the protruding piece 3b. The plate-like member 114 and the second plate-like member 31 are arranged so as to be alternately stepped at a predetermined interval in the vertical and horizontal directions and so as to cover the first plate-like member 114.

Next, an assembly procedure of the speaker device configured as described above will be described.
First, the guide member 115 provided in the back cabinet 11 and the both end portions of the second plate-like member 31 are fitted, and the lower side provided in the back cabinet 11 in the mounting hole 3c provided in the protruding piece 3b. The inner member 3 is pushed into the back cabinet 11 so that the reduced diameter portion 11a of the boss 113 is inserted.

  When the inner member 3 is inserted and fitted into the back cabinet 11 in a normal positional relationship, the front panel 12 to which the speaker 2 is fixed is fitted to the opening side of the back cabinet 11, and the boss is inserted from the front side of the front panel 12. By screwing the screws 4 into the screw holes 111 provided in 112 and 113, a series of assembly is completed.

  As shown in FIG. 2, the speaker device assembled in this way forms a first space a <b> 1 (back space of the speaker 2) between the speaker 2 and the wall 3 a of the inner member 3. A second space a2 is formed between the first plate member 114 and the second plate member 31, a third space a3 is formed between the bottom of the inner member 3 and the bottom of the back cabinet 11, and The opening 12a provided in the front panel 12 communicates with the third space to form a zigzag sound path A that communicates the back space a1 of the speaker 2 and the external space a4.

  As described above, the speaker device according to the present embodiment uses the inner member 3 in place of the conventional pipe for the zigzag sound path A having a required length that attenuates the mid-high sound and improves the sound quality in the low frequency range. Thus, it can be easily formed without increasing the number of parts, and can be easily assembled.

  Also, a sound path forming method may be used in which an inner member is disposed in the speaker box, and a sound path is formed between the inner wall of the speaker box and the inner member so as to connect the back space of the speaker and the external space. It is.

  As mentioned above, although the speaker apparatus concerning this Embodiment was demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is not limited to it, The Various modifications can be made without departing from the scope of the invention.

It is a front view of the speaker apparatus concerning this Embodiment. It is a vertical side view along the YY line in FIG. It is a rear view. It is a disassembled perspective view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Speaker box 11 Back cabinet 111 Screw hole 112, 113 Boss 11a Reduced diameter part 11b Inner wall 11c Inner wall on either side 114 First plate member 115 Guide member 12 Front panel 12a Opening part 2 Speaker 3 Inner member 31 Second plate member 3a Wall portion 3b Projection piece 3c Mounting hole 3d Left and right outer walls 4 Screws A Sound path a1 First space a2 Second space a3 Third space a4 External space

Claims (6)

  An inner member is disposed in the speaker box, and a sound path is formed by the inner wall of the speaker box and the inner member to connect the back space of the speaker and the outer space. apparatus. A plurality of first plate-like members project from the inner wall of the speaker box at a required interval,
The inner member is disposed so as to cover the first plate-like member, and is alternately stepped with the first plate-like member at a predetermined interval from a wall portion constituting the inner member. A plurality of second plate-like members protruding from the wall portion,
A zigzag sound path that connects the back space of the speaker and the external space with the first plate member, the inner wall of the speaker box projecting from the first plate member, and the inner member. 2. The speaker device according to claim 1, wherein the speaker device is formed.   The speaker device according to claim 1, wherein an opening communicating with the outside is provided on a side where the speaker is disposed. The first plate-like member is provided on the inner wall of the speaker box facing the arrangement surface of the speaker.
The back surface space of the speaker is formed by a surface opposite to the projecting surface of the wall portion on which the second plate-shaped member projects and an inner wall of the speaker box. Or the speaker apparatus of 3. The speaker box is composed of a back cabinet in which the first plate member is integrally formed, and a front panel in which the speaker is disposed.
The speaker device according to any one of claims 2 to 4, wherein the inner member is integrally formed with the wall portion and the second plate-like member and is inserted into the back cabinet. .   A sound path forming method comprising: arranging an inner member in a speaker box; and forming a sound path that connects a rear space of the speaker and an external space between the inner wall of the speaker box and the inner member. .

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