CN201294623Y - Front reflection type loudspeaker structure - Google Patents

Abstract

The utility model discloses a front reflection type loudspeaker structure, comprising a front shell and a rear shell, the front shell having a front plate with a shoulder concavely arranged, the shoulder being provided with a bass reflex hole and a reflex conduit extending from the bass reflex hole to the inner and outer sides of the front plate, the front plate being provided with a fixing hole for accommodating a speaker and accommodating a speaker, the rear shell and the front shell being combined with each other to form a sound box, the rear shell having a rear plate and an annular tube extending inwardly from the rear plate, the annular tube covering the bottom of the reflex conduit and forming a gap, and a hollow sound-absorbing cotton being arranged at the rear of the speaker, and a sound-absorbing pad body corresponding to the speaker being arranged at the rear of the hollow sound-absorbing cotton; therefore, bass with good sound quality can be transmitted from the reflex conduit.

Description

Front reflection speaker structure

technical field

The utility model relates to a loudspeaker, in particular to a bass reflex loudspeaker.

Background technique

Generally speaking, the larger the size of the speaker unit, the better its low-frequency (sound range) performance. However, some consumer electronic products cannot use large-size units due to size limitations, so the bass effect is often not ideal. .

In order to obtain a richer low-frequency response, a reflective speaker came into being; the reflective speaker is provided with a bass reflex hole on the speaker box and a reflective duct extending from the bass reflex hole, so that the speaker (monomer) back The sound emitted is transmitted through the reflection duct; when the bass reflex hole is set in front of the box, it is called a front reflection speaker, and the sound of the front reflection speaker is reflected by the speaker box, and then the sound wave is transmitted from the reflection duct; However, most of the speakers made of plastic shells nowadays often have many ribs and screw holes inside the box for structural reinforcement or for combination. The formation of these ribs and screw holes in the process of sound reflection will cause Interfering with the reflection direction of the sound or compromising the intensity of the sound will cause damage to the sound wave transmitted from the bass reflex hole, resulting in poor bass effect.

Utility model content

An object of the present invention is to provide a front-reflection speaker structure, which can prevent sound from being reflected by the irregular surface of the inner wall of the sound box, keep the sound waveform of the reflected sound intact, and further improve the sound quality.

Another purpose of the present utility model is to provide a front reflective loudspeaker structure. A shoulder is recessed from the front plate of the front housing, and the reflective conduit extends from the shoulder to the inside and outside of the front plate. There is a gap between the bass reflex hole and the sound box, so as to prevent the sound in the sound box from interfering with the sound transmitted by the reflection duct, so as to obtain a relatively clear and distinct bass sound.

In order to achieve the above-mentioned purpose, the utility model provides a front reflective loudspeaker structure, including a front shell and a rear shell, the front shell has a front plate with a shoulder, and a bass reflex hole and a shoulder are provided on the shoulder. A reflection conduit extending from the bass reflex hole to the inside and outside of the front plate, the front plate is also provided with a fixing hole for accommodating a speaker, and the rear shell and the front shell are combined to form a sound box. The housing has a rear plate and a ring pipe extending inward from the rear plate. The ring pipe covers the bottom of the reflection duct and forms a gap. There is also a hollow sound-absorbing cotton arranged behind the speaker, and a corresponding hollow sound-absorbing cotton is arranged behind the hollow sound-absorbing cotton. Sound-absorbing pads for speakers.

The beneficial effect of the utility model is that: the front reflective speaker structure provided by the utility model is made of hollow sound-absorbing cotton to absorb the reflection of the noise sound wave, which can prevent the sound from being reflected by the irregular surface of the inner wall of the speaker box, and keep the sound waveform of the reflected sound Integrity, thereby improving the sound quality, for this reason, a deep and concentrated reflex bass is transmitted from the reflex duct to provide a speaker with good sound quality; in addition, there is a gap between the bass reflex hole and the speaker, so that the sound in the speaker will not Disturb the sound transmitted from the reflective duct to get a clearer reflected bass.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the structure of the front reflective loudspeaker of the present invention;

Fig. 2 is the three-dimensional appearance schematic diagram of the structure of the front reflective loudspeaker of the present invention;

Fig. 3 is a three-dimensional sectional view along section line 3-3 in Fig. 2; and

Fig. 4 is a plane sectional view along section line 4-4 in Fig. 2 and a schematic diagram of the action of the structure of the front reflective loudspeaker of the present invention.

Among them, reference signs

1 speaker 10 front case

11 Front plate 111 Fixing hole

112 screw holes 113 shoulder

120 bass reflex hole 121 reflex duct

20 Horns 21 Screws

30 hollow sound-absorbing cotton 40 rear shell

41 Rear plate 42 Ring pipe

420 clearance 43 screw holes

50 sound-absorbing pads 100 speakers

Detailed ways

The detailed description and technical content of the present utility model are as follows with accompanying drawings. However, the attached drawings are only for reference and illustration, and are not intended to limit the present utility model.

Please refer to Fig. 1 and Fig. 2, which are respectively a three-dimensional exploded view and a three-dimensional appearance view of the utility model; the utility model provides a front reflection loudspeaker structure, the speaker 1 includes a front casing 10, and the front casing 10 has A front plate 11 with a fixing hole 111 is provided. The front plate 11 is recessed with a shoulder 113. The shoulder 113 is provided with a bass reflex hole 120 and extends from the bass reflex hole 120 to the inside and outside of the front plate 11. A reflective conduit 121, the height of the reflective conduit 121 on the shoulder 113 is flush with the end face of the horn 20, the reflective conduit 121 is a hollow tube that tapers from the outside to the inside, that is, the reflector The conduit 121 is formed in an outwardly expanding shape to obtain better sound; a speaker 20 is accommodated in the fixing hole 111, and a plurality of screw holes 112 are arranged on its periphery, and a plurality of screw members 21 and the screw holes 112 are mutually screwed. Together, the speaker 20 is locked on the front panel 11 .

A rear casing 40 has a rear plate 41 and a ring pipe 42 extending inwardly from the rear plate 41. The ring pipe 42 covers the bottom of the reflection duct 121 to form a gap 420 (see FIG. 3 ). The casing 40 has a plurality of screw holes 43 and is combined with the front casing 10 to form a sound box 100 .

A hollow sound-absorbing cotton 30 is arranged at the rear of the horn 20, and its cover is arranged on the outside of the reflection duct 121 and the ring pipe 42. The hollow sound-absorbing cotton 30 can absorb the reflection of noise sound waves, wherein, corresponding to the horn 20, the A sound-absorbing pad 50 is arranged behind the hollow sound-absorbing cotton 30 to absorb middle and high-frequency sounds. The sound-absorbing pad 50 can be a sound-absorbing cotton.

In this embodiment, the front plate 11 is divided into left and right sides, and each is provided with a fixing hole 111, each fixing hole 111 accommodates a speaker 20, and each fixing hole 111 is respectively provided with a reflective conduit 121, in addition A hollow sound-absorbing cotton 30 is provided behind the left and right speakers 20 to respectively cover the left and right reflective conduits 121 and the outer sides of the ring pipe 42 .

Please refer to FIG. 3 , which is a three-dimensional sectional view along section line 3-3 in FIG. 2 ; it can be seen from the figure that the reflection duct 121 extends from the shoulder 113 to the inside and outside of the front panel 11 , and the bass reflex hole 120 There is a gap with the sound box 100, so as to prevent the sound in the sound box 100 from interfering with the sound transmitted by the reflection duct 121, the rear plate 41 of the rear casing 40 extends inwardly with a ring pipe 42, and the ring pipe 42 covers The gap 420 is formed by covering the bottom of the reflection duct 121; in addition, the front casing 10 and the rear casing 40 are combined to form a sound box 100, and the sound-absorbing cotton 30 is provided in the sound box 100. The hollow sound-absorbing cotton 30 is disposed at the rear of the horn 20 and covers the outside of the reflection duct 121 and the ring pipe 42 .

Please refer to FIG. 4 , which is a cross-sectional view along section line 4-4 in FIG. 2 and a schematic diagram of operation; the horn 20 is locked on the front plate 11 of the front housing 10, and the ring pipe 42 covers the bottom of the reflective duct 121 And there is a gap 420 formed with the reflective duct 121. When the speaker 20 sounds, there will be sound in the front and rear directions. The forward sound is directly transmitted to the user, and the backward sound is collected in the hollow of the speaker 100. In the sound-absorbing cotton 30, the hollow sound-absorbing cotton 30 will absorb the reflection of noise sound waves, and some of the mid- and high-frequency sounds will be absorbed and attenuated by the sound-absorbing pad 50 arranged on the hollow sound-absorbing cotton 30 and the rear, and are rarely absorbed. The bass passes through the hollow sound-absorbing cotton 30 , then passes through the gap 420 formed between the ring tube 42 and the reflection duct 121 , and finally reflects from the bottom of the ring tube 42 , so that the sound wave is transmitted from the reflection duct 121 .

The front reflective loudspeaker structure of the utility model uses hollow sound-absorbing cotton to absorb the reflection of noise sound waves, which can prevent sound from being reflected by the irregular surface of the inner wall of the sound box, keep the integrity of the sound waveform of the reflected sound, and improve the sound quality. A deep and concentrated reflex bass is transmitted from the reflex duct to provide a speaker with good sound quality; in addition, there is a gap between the bass reflex hole and the speaker box, so that the sound in the speaker will not interfere with the sound transmitted from the reflex duct , for a clearer reflection of the bass.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (8)

1. a front-reflection formula loadspeaker structure is characterized in that, comprising:

One procapsid, tool are provided with a header board of a fixing hole, and this header board is concaved with a shoulder, the reflection conduit that this shoulder is provided with a bass reflex hole and extends to the medial and lateral of this header board from this bass reflex hole;

One loudspeaker are placed in this fixing hole;

One back casing mutually combines to form an audio amplifier with this procapsid, and the endless tube that this back casing has a back plate and extends internally from this back plate, this endless tube cover cover this reflection conduit bottom and be formed with a gap;

One hollow acoustical cotton is located at the rear of these loudspeaker, and this hollow acoustical cotton covers at the outside of this reflection conduit and this endless tube; And

One sound-absorbing pad is to should loudspeaker and be located at this hollow acoustical cotton rear.

2. front-reflection formula loadspeaker structure according to claim 1 is characterized in that, a hollow tube of past interior convergent outside this reflection conduit is served as reasons.

3. front-reflection formula loadspeaker structure according to claim 1 is characterized in that, this header board is divided into left and right side and respectively is provided with a fixing hole, respectively is equipped with loudspeaker respectively in this fixing hole.

4. front-reflection formula loadspeaker structure according to claim 3 is characterized in that, this fixing hole side of these left and right two sides is respectively equipped with this reflection conduit.

5. front-reflection formula loadspeaker structure according to claim 3 is characterized in that respectively the rear of these loudspeaker is respectively equipped with a hollow acoustical cotton.

6. front-reflection formula loadspeaker structure according to claim 1 is characterized in that, this reflection conduit height on this shoulder is the end face with these loudspeaker.

7. front-reflection formula loadspeaker structure according to claim 1 is characterized in that this header board is provided with a plurality of screws in the periphery of this fixing hole, and these loudspeaker screw togather mutually by a plurality of spiral shell spares and these screws and are locked on this header board.

8. front-reflection formula loadspeaker structure according to claim 1 is characterized in that this sound-absorbing pad is an acoustical cotton.

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