JPH04126488U - speaker box - Google Patents

Abstract

(57) [Summary] [Purpose] A simple wooden structure provides both a bass reflex effect and a standing wave prevention effect. [Configuration] The slits (5a) and (5b) are configured to form a sound path from the rear surface of the diaphragm of the sound source speaker (3) to the outlet (4a) of the bass reflex duct (4). box
(1) A sound path hole (2a) of a specific size was provided in the internal partition plate (2), and a space constituting the Helmholtz resonator (8) was formed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses a simple wooden structure to achieve a bass reflex effect and a standing wave prevention effect. This relates to a speaker box that is also included.

0002

[Conventional technology]

Conventionally, this type of speaker box (01) is a standard bass speaker box, as shown in Figure 6. A flat type with a duct opening (04a) on the front of the baffle plate, as shown in Figure 7. , the bass reflex duct is cylindrical and the front side is opened (04b) in the baffle plate, Fig. As shown in Figure 8, the sound pressure of the standing wave generated by resonance in the internal space is the highest. Normally, the structure is suppressed by placing a mass (06) of sound-absorbing material such as glass wool in the belly part. Closed speaker box, as shown in Figure 9, between the bottom of the box and the back panel. It has a structure in which a slit (05) is formed at the rear end and a partition plate (02) is attached. A Helmholtz resonator (08) is configured in the space formed by (02) to suppress standing waves. There are closed-type boxes etc.

0003

[Problem that the idea aims to solve]

Therefore, in conventional speaker boxes of this type, each It is a bass reflex type speaker box, and also a resonance absorption type closed type speaker box. I needed to get a speaker box that had both effects. There was a problem. .

0004 Therefore, this invention solves the problems that conventional speaker boxes have. To solve this problem, the partition board inside the box has slits that form specific sound paths. The function of the bulkhead inside the box configured as follows, and the provision of sound passage holes of specific dimensions. This allows a single speaker box to achieve two different effects that cannot be achieved with conventional speaker boxes. In addition to being equipped with a peaker box, it is also fixed by a Helmholtz type resonator. A speaker whose purpose is to improve the quality of reproduced sound by suppressing existing waves. The goal is to provide a maker box.

[0005]

[Means to solve the problem]

The configuration of the present invention to achieve this purpose will be explained using FIGS. 1 to 5, which correspond to embodiments. To explain, The first invention has a slit (5a) inside the box (1) at the side edge and between the inner surface of the side plate. ) and a Helmholtz closed pipe resonator (8) on the slit (5a) side. Attach and support the partition plate (2) with the constituent crosspieces (6), and then open the slits (5a). It is formed as an opening for the zonator (8), and also forms a gap between the partition plate (2) and the inner surface of the rear plate. A slit (5b) is formed in between, and the bass reflex From the slit (5b) to the opening (4a) of the duct (4), there is a baffle plate (7). The entrance of the sound path (bass reflex duct (4)) formed towards the opening (4a) of This is a speaker box with a structure in which a sound path partition is formed.

[0006] This second design has sound holes (2a) perforated in the partition plate (2) and the crosspieces are combined in a V-shape. (6a) on the bottom surface of the partition plate (2), and between it and the bottom plate, the sound hole (2a) is inserted into the duct (4). from the back of the diaphragm of the sound source speaker (3). From the slit (5b) to the opening (4a) of the duct (4), there is a baffle plate (7). The entrance of the sound path (bass reflex duct (4)) formed towards the opening (4a) of In addition to forming a sound path partition wall, the slit (5b) is used as a rear end partition of the partition plate (2). A structure configured as an opening for a resonator (8) formed between the rear plate (2) and the inner surface of the rear plate. It is a built-in speaker box.

[0007] This third invention has a partition plate (2) inside the box (1), and a side plate at the side edge. A slit (5a) is formed between the slit (5a) and a helm hole is formed on the slit (5a) side. The above-mentioned partition plate (2) is supported and attached with the crosspiece (6) that constitutes the trisonator (8). , the slit (5a) is formed as an opening of the resonator (8), and Then, instead of the slit (5b) provided between the partition plate (2) and the inner surface of the rear plate, a paper tube Open the open pipe port (6a) inside the box (1) and on the duct (4) side to create a bass reflex type. It is a speaker box.

[0008]

[Effect]

Since the speaker box of this invention has such a structure, it cannot be used as a normal sound source speaker. The speaker can be used by attaching it in the normal mounting position.

[0009] Therefore, in the speaker box of the present invention, the sound path from the sound source to the opening is The bass range is enhanced, and the internal volume exhibits the phase inversion behavior of a bass reflex. Can be done. Furthermore, depending on the volume and cross-sectional area of the cavity, the reduction due to Helmholtz resonance is The result is a zonator, which allows the partition inside the box to be slit through a particular sound path. The function of the bulkhead inside the box configured to form a sound path of specific dimensions. By providing holes, two types of effects that cannot be obtained with conventional speaker boxes are achieved. In addition to combining these into a single speaker box, it is also possible to suppress standing waves. It is possible to improve the quality of reproduced sound.

0010

【Example】

Embodiments of the present invention will be described below based on the drawings. In the drawings, FIGS. 1 and 2 are diagrams showing one embodiment of the first invention. In the figure, This first invention has a slit (5a) inside the box (1) at the side edge and between the inner surface of the side plate. and a Helmholtz closed pipe resonator (8) on the slit (5a) side. Attach and support the partition plate (2) with the constituent crosspieces (6), and then open the slits (5a). It is formed as the opening of the zonator, and also between the partition plate (2) and the inner surface of the rear plate. A slit (5b) is formed in the rear surface of the diaphragm of the sound source speaker (3) to insert the bass reflex from the slit (5b) to the opening (4a) of the baffle plate (7). Configure the entrance of the sound path (bass reflex duct (4)) formed toward the opening (4a) to This is a speaker box with a structure that forms a road bulkhead. Then, depending on the cross-sectional area of the sound path, Spread the partition plate (2) forward and install it at an angle so that it is larger than the duct. It is also possible to moderate the resonance caused by the internal space.

[0011] In the second invention, as shown in FIGS. 3 and 4, the partition plate (2) is connected to the sound source speaker (3). gradually from the rear surface of the diaphragm to the outlet (4a) of the bass reflex duct (4). Drill sound holes (2a) and assemble them in a V-shape to form a sound path with a large cross-sectional area. Place the combined crosspiece (6a) on the bottom surface of the partition plate (2), and place the sound hole (2a) at the entrance of the duct (4). from the back of the diaphragm of the sound source speaker (3). From the slit (5b) to the opening (4a) of the baffle plate (7), Configure the entrance of the sound path (bass reflex duct (4)) formed toward the mouth (4a), and While forming a partition wall, the slit (5b) is connected to the rear end partition plate (2) of the partition plate (2). 2) and the inner surface of the rear plate as an opening for the Helmholtz resonator (8) formed. This is a speaker box with a built-in structure.

0012 The third invention, as shown in FIG. Inside the box (1), a slit (5a) is formed between the side edge and the inner surface of the side plate. a crosspiece (6) constituting a Helmholtz closed tube resonator (8) on the slit (5a) side; Support and install the partition plate (2) above, and insert the slit (5a) into the opening of the resonator. and provided between the partition plate (2) and the inner surface of the rear plate. Instead of the slit (5b), connect the open tube port (6a) made of paper tube etc. to the inside of the box (1). This is a bass reflex type speaker box with an opening on the duct (4) side.

[0013] Although the embodiments considered to be representative of the present invention have been described above, the present invention does not necessarily include the embodiments. It is not limited to the structure of these embodiments, and the above-mentioned structural elements of the present invention may be used. and within the scope of achieving the purpose stated in this invention and having the following effects. It can be implemented with appropriate modifications.

[0014]

[Effect of the idea]

As is already clear from the above explanation, the first invention is based on the partition inside the box (1). From the back of the diaphragm of the sound source speaker (3), insert the diaphragm plate (2) into the outlet (4a) of the bass reflex duct (4). ), the slit (5) is constructed so as to form the sound path as described above. The acoustic bulkhead inside the constructed box (1) is arranged, its function and the specific dimensions mentioned above are determined. Since it is equipped with a sound path hole (2a), it is not possible to obtain a conventional speaker box. In addition to combining two types of effects into one speaker box, it also provides health benefits. The action of the Muholz resonator (8) suppresses standing waves and improves the playback quality. The speaker box has come to be expected to have the effect of being able to It's Kusu.

[0015] In the second invention, the partition plate (2) is connected to the rear surface of the diaphragm of the sound source speaker (3). The cross-sectional area gradually increases between the bass reflex duct (4) and the outlet (4a). With a structure in which sound holes (2a) are drilled to form a horn-shaped sound path, it is different from the conventional speaker. A single speaker box combines two effects that cannot be obtained with other speaker boxes. At the same time, the standing waves are suppressed by the action of the Helmholtz resonator (8). It is also possible to expect the effect of improving the playback quality. This is a speaker box that has become popular.

[0016] The third invention has a structure in which the partition plate (2) has an open pipe port (8a). A single speaker box provides two types of effects that cannot be achieved with conventional speaker boxes. It is expected to eliminate standing waves and improve playback quality. The speaker box has come to be expected to have the effect of being able to It is

[0017] In addition, the above partition plate (2) reduces the strength of the box (1) against vibration and resonance. Needless to say, a reinforcing effect can also be produced.

[Brief explanation of drawings]

FIG. 1 is a transparent perspective view showing an embodiment of the first invention.

FIG. 2 is a cross-sectional view showing an embodiment of the first invention.

FIG. 3 is a transparent perspective view showing an embodiment of the second invention.

FIG. 4 is a cross-sectional view showing an embodiment of the second invention.

FIG. 5 is a transparent perspective view showing an embodiment of the third invention.

FIG. 6 is a transparent perspective view showing conventional example No. 1;

FIG. 7 is a transparent perspective view showing conventional example No. 2;

FIG. 8 is a transparent perspective view showing conventional example No. 3;

FIG. 9 is a transparent perspective view showing conventional example No. 4;

[Explanation of symbols]

(1) Box (2) Partition plate (2a) Sound hole (3) Sound source speaker (4) Bass reflex duct (4a) Opening (5a) Slit (5b) Slit (6) Crosspiece (6a) Crosspiece (7) Baffle plate (8) Helmholtz resonator (8a) Open port

Claims (3)

[Scope of utility model registration request] [Claim 1] Inside the box (1), a partition plate (2)
A slit (5a) is formed at the side end between the inner surface of the side plate, and the partition plate (2) is supported by a crosspiece (6) constituting a closed tube Helmholtz resonator on the side of the slit (5a). The slit (5a) is formed as the opening of the resonator (8), and the slit (5b) is formed between the partition plate (2) and the inner surface of the rear plate, so that the sound source speaker (3)
From the back of the diaphragm, open the bass reflex duct (4) (4a).
From the slit (5b) to the baffle plate
The speaker box has a structure in which the entrance of the sound path (bass reflex duct) formed toward the opening (4a) of (7) is formed, and a sound path partition wall is formed. [Claim 2] Inside the box (1), a partition plate (2)
A sound hole (2a) is bored in the sound hole (2a), and a crosspiece (6a) combined in a V-shape is placed on the bottom surface of the partition plate (2) between the sound hole (2a) and the bottom plate.
from the slit (5b) to the opening (4a) of the bass reflex duct (4). The entrance of the sound path (bass reflex duct) formed toward the opening (4a) of (7) is formed to form a sound path partition, and the slit (5b) is connected to the rear end of the partition plate (2). A speaker box configured as an opening of a Helmholtz resonator (8) formed between the partition plate (2) and the inner surface of the rear plate. [Claim 3] Inside the box (1), a partition plate (2)
In addition, a slit (5a) is formed between the side edge and the inner surface of the side plate, and a crosspiece (6) forming a Helmholtz resonator (8) on the side of the slit (5a) connects the partition plate (2). The slit (5a) is formed as an opening of the resonator (8) by supporting and attaching the partition plate (2).
Connect the open tube port (8a) made of paper tube, etc. to the inside of the box (1), and
A bass reflex type speaker box with an opening on the duct (4) side.