JPH10243488A - Speaker box unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker box unit of a speaker integrated acoustic device whose metallic structure is simple, whose cost is inexpensive and whose external design and acoustic characteristic are satisfactory. SOLUTION: A barrier plate member 5 is attached to a boss 1e while interfitting it into a groove 1a of an top cabinet 1 by pressure with a barrier plate holding part 4a of a baffle member 4 to which a speaker 6 is fixed upward. The front surface of a diaphragm of the speaker 6 is sealed at parts except an emitting sound hole 1b with a sealing rib 4c and a baffle rib 1c. The top cabinet 1 and the bottom cabinet 2 are interfitted, the cabinet 2 and the member 5 are interfitted and also the member 4 and a barrier plate rib 2c are interfitted with the member 4 between them. Thereby, a speaker rear space 10 that is sealed is formed at the back of the diaphragm of the speaker 6 and a sealed speaker box is structured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker box device having a partition wall for an audio equipment such as a radio cassette which has a built-in loudspeaker.

[0002]

2. Description of the Related Art In recent years, audio equipment such as a radio cassette, which has a speaker unit integrated therein, has been required to satisfy many requirements such as downsizing of equipment, improvement of sound quality, improvement of design and reduction of price. As a means to achieve this, the cabinet is divided into upper and lower parts, and the speakers are mounted upward to reduce the height of the equipment without being affected by the speaker diameter. It has been improved. It is acoustically important that the speaker box is separated from the electric circuit section and the like to form a closed structure.

[0003] Hereinafter, the configuration of an acoustic device in which the above-described conventional speaker box is integrated will be described. FIG.
Fig. 1 shows an example of a configuration using a conventional speaker box device. An upper cabinet 11 and a lower cabinet 12 to which the speakers 6 are fixed are integrally formed with the partition ribs 11 respectively.
a, 12a are provided, and the projection 1 at the lower end of the rib rib 11a is provided.
1b and the recess 12b at the upper end of the partition rib 12a are fitted to each other to surround the periphery of the speaker 6, thereby forming a sealed speaker box.

[0004] A diffuser 11d is provided integrally with the cabinet 11 in the vicinity of the opening 11c to achieve an acoustic diffusion effect, and a net 13 covering the opening 11c is formed by a recess 11e of the diffuser 11d and the cabinet 11 of the cabinet 11. Recess 11
and f. Then, the net 13 is pressed and fixed, and the decorative plate 14 covering the diffuser 11d and the opening 11c is fixed by the screw 7.

[0005]

In such a conventional closed speaker box device having a vertically divided cabinet structure, partition ribs 11a and 12a, a diffuser 11d and the like are provided integrally with the cabinets 11 and 12. Was. According to this method, the partition ribs 11a and 12a need to be thick in order not to cause resonance.
A dent called sink occurs in the portions of 1g and 12c. The decorative plate 14 is provided to cover the exterior including the sink and the diffuser 11d in the vicinity of the 11g. However, there is a design problem that the dividing line, the fixing screw and the like are exposed to the exterior and the appearance is poor, and the like. In addition, the assembling work was complicated and the number of steps was increasing.

When the ribs 11a, 12a are formed integrally with the cabinets 11, 12, it is necessary to divide the mold into large parts due to the mold structure, so that the mold is inevitably complicated. Also, the rib rib portions 11a and 12a which have become thicker in molding.
However, there was a problem that the resin cooling was insufficient and the molding time was prolonged.

SUMMARY OF THE INVENTION An object of the present invention is to provide a speaker box device which has a simple mold structure, is easy to process parts, is effective in cost reduction, removes design defects, has a beautiful appearance, and has a high commercial value. It was done as.

[0008]

According to a first aspect of the present invention, there is provided a speaker box device comprising a sound emitting hole, a baffle fitting portion, a partition fitting portion, and a peripheral fitting portion. An upper cabinet having: a flat plate-shaped partition member to be fitted to the partition fitting portion of the upper cabinet; a lower cabinet peripheral fitting portion fitted to the upper cabinet peripheral fitting portion: fitted to the partition member A lower cabinet having partition ribs to be inserted, a speaker sound emission hole for emitting sound upward from the attached speaker, and a periphery of the speaker sound emission hole, which is fitted to a baffle fitting portion of the upper cabinet to fit the upper cabinet. And a baffle member fixed to the inner surface of the upper cabinet and having a fitting portion for sealing around the sound emission hole of the cabinet, and a speaker at a rear portion of the diaphragm attached to the baffle member. The rear space and the sound release hole side of the speaker front space, characterized by being configured to be separated by fitting the fitting portion of the baffle fitting portion and the baffle member of the upper cabinet.

In this configuration, since the partition member is formed separately from the upper cabinet, the mold structure of the upper cabinet is simplified, the problem of molding affecting the design is solved, and the partition member can be formed by pressing. It can be made very cheaply.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the baffle member includes a partition wall holding portion which engages with a lower end portion of the partition member, and the baffle member is attached to the upper cabinet. In addition, the partition member is pressed and fixed to the partition fitting portion of the upper cabinet by the partition holding portion, and is configured to be sandwiched between the partition member and the partition rib of the lower cabinet. Things.

Thus, the partition member is held by the baffle member to press-fit the partition member upward, and the lower end of the partition member is stably held to smoothly guide the lower cabinet to the upper cabinet. Workability is improved. In addition, since the central portion of the planar partition member is held, it is extremely effective in suppressing the resonance of the speaker box.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of an audio device equipped with a speaker box device according to an embodiment of the present invention.
FIG. 2 is a sectional view of a main part of the speaker box device, and FIG.
Is a bottom view showing the internal structure of the upper cabinet, and FIG.
Is a cross-sectional view including the partition wall surface, and FIG. 5 is a plan view of the baffle member.

1 to 5, the cabinet of the audio equipment comprises an upper cabinet 1 constituting an upper half and a lower cabinet 2 constituting a lower half. An electronic equipment main body 8 is provided at the center of the equipment, and a left speaker is provided. A box section 9L and a right speaker box section 9R are provided. Each of the upper cabinet 1 and the lower cabinet 2 has a convex fitting portion 1d and a groove 2d as fitting portions around the cabinet around the end surfaces thereof.
Are provided in a range necessary for hermetically sealing at least the portions forming the speaker boxes 9L and 9R, and are fitted to each other. Further, a punching net 3 having a large number of pores is provided on the upper cabinet 1 in order to cover the sound emission hole 1b provided above the upper cabinet 1 on the upper part of the speaker boxes 9L and 9R to hide the internal structure. It is fitted and fixed in the groove 1f.

Since the speaker boxes 9L and 9R are bilaterally symmetric, the left speaker box 9L will be described below with reference to FIGS. A baffle member 4 integrally formed with a diffuser 4d having a substantially conical shape is provided below a sound emission hole 1b provided in the upper cabinet 1 with a screw hole 4f.
Are fixed to four bosses 1e provided on the upper cabinet 1 by screws 7 passing therethrough. A circular speaker sound emission hole 4e is formed in the center of the baffle member 4 which is held substantially horizontally.
The speaker 6 is fixed upward to the lower surface of the speaker sound emission hole 4e, and the diffuser 4d has a substantially conical shape that is above the speaker 6 and spreads in the sound emission direction of the speaker 6. .

Further, the speaker sound emission hole 4 of the baffle member 4
e, a sealing rib 4c is provided along a baffle rib 1c also surrounding the sound emission hole 1b on the inner surface of the upper cabinet 1, and they are fitted to each other to surround the sound emission hole of the upper cabinet. And the front sound path of the diaphragm (not shown) of the speaker 6 reaching the outside of the upper cabinet 1 through the speaker sound emission holes 4e and 1b is blocked from the speaker rear space 10 of the speaker box 9L. I have.

Next, as a partition of the speaker box 9L, a partition member 5 formed by punching a flat plate is provided with a groove 1a as a partition fitting portion provided on the upper cabinet 1 and a partition rib 2c provided integrally with the lower cabinet 2. The speaker box portion 9L is sealed with respect to the electronic device main body 8 by being fitted into a groove portion 2a as a partition wall fitting portion formed at the front end, and a notch 5a is provided in a part thereof. 5a, the partition wall holding portion 4 provided on the baffle member 4
a is fitted, and is sandwiched between the lower cabinet 2 and the partition rib 2c. A convex fitting portion 4b is formed in the partition holding portion 4a, and an edge of the convex fitting portion 4b and the partition member 5 are formed.
Of the partition ribs 2c are fitted into the groove portions 2a of the partition ribs 2c to seal the space between the partition wall members 5 and the partition ribs 2c, and have a sealed speaker rear space 10 as a whole. The speaker box 9L is configured. The description of the speaker box 9R is omitted because it is symmetrical.

Here, as shown in FIG. 4B, the notch 5a has a depth dimension d1, and a dimension including the convex fitting portion 4b of the partition holding portion 4a of the baffle member 4 is d2.
When d1 = d2 and the thickness width of the convex fitting portion 4b is equal to the thickness of the partition member 5, the aforementioned convex fitting portion 4b and the edge of the partition member 5 are continuous. Then, it fits into the groove 2a.

Although the notch 5a is provided on the partition member 5 side to sandwich the baffle member 4, the notch may be provided on the partition rib 2c side of the lower cabinet 2, and the partition member 5 side and the partition rib 2c may be provided. Notches may be provided in both of them.

When the speaker wiring and the like are passed between the speaker box portions 9L and 9R and the electronic device main body 8, notches 5b and 5c may be provided in the partition member 5 so as to pass therethrough, or partition ribs may be provided. A cutout 2e may be provided in 2c.

The operation of the thus configured speaker box device will be described below. When a diaphragm (not shown) of the speaker 6 vibrates in the speaker box section 9L, a sound pressure is generated upward and hits the surface of the diffuser 4d which spreads upward in a substantially conical shape through the speaker sound emission hole 4e. The light is reflected and radiated leftward and forward from the sound emission hole 1b of the cabinet 1. In the speaker box 9R (not shown in detail), the light is radiated rightward and forward. Thereby, the sound pressure can be diffused and radiated over a wide range. The sound pressure in the rear space 10 of the speaker is sealed by the partition member 5 and the partition rib 2c and does not leak to the electronic device main body 8, and the speaker is closed by the baffle rib 1c of the upper cabinet 1 and the sealing rib 4c of the baffle member 4. 6 does not leak to the front surface and does not interfere with the sound pressure on the front surface.

The fitting portions between the upper cabinet 1 and the lower cabinet 2, the upper cabinet 1 and the partition member 5, and between the partition member 5 and the partition rib 2 c are each formed with a convex fitting portion and a groove receiving the convex fitting portion. And the fitting of the upper cabinet 1 and the baffle member 4 is exemplified by the sliding of the convex ribs, but the fitting is not limited to these.
For example, a flat surface and a convex portion may be joined, rubber or a soft synthetic resin may be interposed therebetween, and any structure may be used as long as it can be sealed.

Further, in the above description, the sealing of the left and right speaker boxes 9L and 9R is a hermetically sealed structure at least in a cabinet fitting usually performed in a speaker box of an audio device. This also includes those formed with ports to be provided.

As described above, according to the present embodiment, since the partition member 5 is formed separately from the upper cabinet 1, the mold structure of the upper cabinet is simplified, and there is no problem in molding and the design is excellent. And the partition member 5 itself is
Since it can be made by pressing, it can be made extremely inexpensively.

The partition member 5 is press-fitted upward by a partition holding portion 4a provided at one end of the baffle member 4 attached to the upper cabinet 1 with a screw 7, so that the partition member 5
Is stably held, and is guided smoothly when fitting the lower cabinet 2 to the upper cabinet, thereby improving workability. Further, since the central portion of the partition member 5 having a planar shape is held, it is extremely effective in suppressing the resonance of the speaker boxes 9L and 9R.

As described above, according to the present embodiment, it is possible to provide an excellent loudspeaker box in which the workability is improved as a whole, the cost is low, and the appearance is desirable while satisfying the miniaturization and high sound quality of the device. You can do it.

[0026]

As described above, the speaker box device according to the present invention has a simpler mold structure for the upper cabinet, and is excellent in design without problems in molding due to the first invention. Since the partition member can be formed by press working, it can be made extremely inexpensively.

According to the second aspect of the present invention, the partition member is press-fitted upward by the partition holding portion provided at one end of the baffle member attached to the upper cabinet.
The lower end of the partition member is stably held, and the lower cabinet is smoothly guided when the lower cabinet is fitted to the upper cabinet, thereby improving workability. In addition, since the center of the planar partition member is held, a speaker box is provided. This is extremely effective in suppressing the resonance of the unit.

As described above, the workability is improved as a whole while satisfying the miniaturization and high sound quality of the device, and the advantageous effects of reducing the cost of the device, improving the external design, and improving the performance can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a device equipped with a speaker box device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the speaker box device.

FIG. 3 is a bottom view showing the internal structure of the upper cabinet.

FIG. 4A is a cross-sectional view including a partition wall, and FIG.

FIG. 5 is a plan view of the baffle member.

FIG. 6 is a sectional view of a main part of a conventional speaker box device.

[Explanation of symbols]

 Reference Signs List 1 upper cabinet 1a groove 1b sound emission hole 1c baffle rib 1d convex fitting part 1e boss 2 lower cabinet 2a groove 2c partition rib 2d groove 4 baffle member 4a partition holding part 4b convex fitting part 4c sealing rib 4d diffuser 4e speaker Sound emitting hole 5 Partition member 5a Notch 6 Speaker 9L Left speaker box 10 Speaker rear space

Claims (3)

[Claims] An upper cabinet having a sound emission hole, a baffle fitting portion, a partition fitting portion, and a peripheral fitting portion; a partition member which is a flat plate and fits with the partition fitting portion of the upper cabinet; A lower cabinet having a lower cabinet peripheral fitting portion fitted to the upper cabinet peripheral fitting portion and a partition rib fitted to the partition member; and a speaker sound emitting hole for emitting sound upward from the attached speaker. A baffle member that surrounds the speaker sound emission hole and has a fitting portion that fits with the baffle fitting portion of the upper cabinet to seal around the sound emission hole of the upper cabinet and is fixed to the inner surface of the upper cabinet. The speaker rear space at the rear of the diaphragm of the speaker attached to the baffle member and the speaker front space at the sound emission hole side are connected to the baffle fitting portion of the upper cabinet and the baffle. Speaker box apparatus being characterized in that configured to be separated by fitting the fitting portion of the full member. 2. The speaker rear space includes a fitting between a baffle fitting portion of the upper cabinet and a fitting portion of the baffle member, and a fitting between peripheral fitting portions of the upper cabinet and the lower cabinet. 2. A structure in which a seal is formed by fitting a partition fitting portion of the upper cabinet with the partition member and fitting a partition rib of the lower cabinet with a partition rib of the lower cabinet.
The speaker box device according to the above. 3. The baffle member includes a partition holding portion that engages with a lower end portion of the partition member. The baffle member is attached to the upper cabinet, and the partition member is fitted to the upper cabinet by the partition holding portion. The speaker box device according to claim 1, wherein the speaker box device is configured to be pressed and fixed to the joint portion and to be sandwiched between the partition member and a partition rib of the lower cabinet.