CN213990996U - Equal loudness sound box - Google Patents

Abstract

The utility model provides an equal loudness audio amplifier, including high frequency unit (2) and a plurality of full frequency unit (4), full frequency unit is located same one side of the axis of high frequency unit, and arranges in proper order on same arc along the direction of keeping away from the high frequency unit, and simultaneously, apart from the full frequency unit that the high frequency unit is farther, contained angle between the axis of its axis and high frequency unit is big more. The utility model provides a frequency response scope can be widened to the structure of equal loudness audio amplifier, helps reducing the distortion.

Description

Equal loudness sound box

Technical Field

The utility model relates to an acoustics product technical field especially relates to an equal loudness audio amplifier.

Background

The function of the sound box is to convert audio frequency electric energy into corresponding sound energy and radiate the sound energy into space, and the sound box is responsible for converting electric signals into sound signals for direct listening by human ears. The structure of audio amplifier mainly includes inclosed casing and installs the speaker unit on the casing, and in order to solve the distortion problem of audio amplifier, some small-size audio amplifiers utilize the spring to make speaker vibration alleviate to alleviate the distortion degree that leads to because speaker vibration, however, when increasing damping pieces such as spring, increased the structure complexity of audio amplifier shell, and had higher requirement to the intensity and the closure of shell, this is not big to the reference meaning of equal loudness audio amplifier. Therefore, how to reduce the distortion of the equal loudness loudspeaker box becomes a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an equal loudness audio amplifier, equal loudness audio amplifier's structure can widen the frequency response scope of audio amplifier, helps reducing the distortion.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an equal loudness loudspeaker box, includes high frequency unit and a plurality of full frequency unit, full frequency unit is located same one side of the axis of high frequency unit, and along keeping away from the direction setting of high frequency unit, distance the high frequency unit is farther full frequency unit, its axis with contained angle between the axis of high frequency unit is big more.

Optionally, in the equal-loudness sound box, an included angle between an axis of the full frequency unit and an axis of the high frequency unit is 0 ° to 30 °.

Optionally, in the equal loudness sound box, the full frequency units are arranged on the same arc line in sequence.

Optionally, in above-mentioned equal loudness loudspeaker box, including the case shell with cover in the back lid at the case shell back, the high frequency unit with full frequency unit install in the front of case shell, be provided with on the case shell and be used for installing the sound wave guide of the awl basin shape of high frequency unit.

Optionally, in the above equal-loudness sound box, the inner side of the cabinet is provided with reinforcing cross ribs connected to the front panel and the side panels of the cabinet.

Optionally, in the equal-loudness sound box, a reinforcing longitudinal rib connected to the front panel of the box and the reinforcing transverse rib is provided on the inner side of the box.

Optionally, in the equal-loudness sound box, the reinforcing cross rib is disposed between the high-frequency unit and the adjacent full-frequency unit and between any two adjacent full-frequency units.

Optionally, in the equal-loudness sound box, the inner side of the box shell is provided with a skeleton bar on the side panel.

Optionally, in the equal-loudness sound box, a transverse supporting rod is arranged in the box shell, and two ends of the transverse supporting rod are respectively connected with the two opposite side panels.

Optionally, in the equal-loudness sound box, the material of the transverse supporting rod is metal or plastic.

According to the above technical scheme, the utility model provides an in equal loudness loudspeaker box, be provided with high frequency unit and a plurality of full frequency unit, these full frequency unit lie in the axis of high frequency unit with one side, and along the direction setting of keeping away from high frequency unit, the full frequency unit that is farther apart from high frequency unit, contained angle between its axis and the axis of high frequency unit is big more, can widen the frequency response scope of loudspeaker box to this kind of deflection design of full frequency unit, help reducing the distortion.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic perspective view of an equal loudness loudspeaker box provided in an embodiment of the present invention;

FIG. 2 is a schematic view of the equal loudness loudspeaker of FIG. 1, viewed from the rear side;

FIG. 3 is a side view of the equal loudness speaker of FIG. 1;

FIG. 4 is an exploded view of the equal loudness speaker of FIG. 1;

FIG. 5 is a view showing the internal structure of the equal loudness sound box shown in FIG. 1 with the rear cover 5 removed;

FIG. 6 is a schematic view of the construction of the enclosure 4 of FIG. 4;

fig. 7 is a schematic structural view of the rear cover 5 in fig. 4.

Labeled as:

1. a cabinet housing; 2. a high frequency unit; 3. an acoustic waveguide; 4. a full frequency unit; 5. a rear cover; 51. limiting ribs; 52. a groove; 53. a nut; 54. mounting holes; 55. positioning holes; 6. hooking; 7. a transverse stay bar; 8. a first frame bar; 9. reinforcing the longitudinal ribs; 10. a second frame bar; 11. reinforcing the transverse ribs; 12. a third skeletal rod; 121. a clamping groove.

Detailed Description

For the sake of understanding, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, fig. 1 is the perspective view of equal loudness audio amplifier that the embodiment of the utility model provides, fig. 2 is the schematic view when the equal loudness audio amplifier shown in fig. 1 is seen from the rear side, equal loudness audio amplifier includes case shell 1 and covers in the back lid 5 at case shell 1 back, high frequency unit 2 and four full frequency unit 4 are installed to case shell 1's front, full frequency unit 4 is located the same one side of high frequency unit 2's axis, and set up along the direction of keeping away from high frequency unit 2, as shown in fig. 3, the contained angle between full frequency unit 4's axis and high frequency unit 2's axis is 0 °, 3 °, 8 ° and 15 ° in proper order.

The utility model discloses made the design of deflecting full frequency unit 4, apart from full frequency unit 4 that high frequency unit 2 is farther, contained angle between its axis and high frequency unit 2's the axis is big more, and the frequency response scope of audio amplifier can be widened to this kind of structure, helps reducing the distortion. The number of the full frequency units 4 may also be five, six, or other values, an included angle between an axis of the full frequency unit 4 and an axis of the high frequency unit 2 is generally 0 ° to 30 °, for example, an included angle corresponding to the full frequency unit 4 closest to the high frequency unit 2 is generally 0 °, and thus is counted from far away, an included angle corresponding to the second full frequency unit 4 may be 3 ° to 5 °, an included angle corresponding to the third full frequency unit 4 may be 8 ° to 12 °, and an included angle corresponding to the fourth full frequency unit 4 may be 15 ° to 25 °.

Referring to fig. 1 and 3, in the embodiment, the front surface of the cabinet 1 is designed into an arc surface, and four full frequency units 4 are sequentially arranged on the same arc line, so that the sound transmission is facilitated. Of course, in other embodiments, the full frequency units 4 may be arranged in a straight line, as long as the farther from the high frequency unit 2, the larger the deflection angle with respect to the high frequency unit 2 is.

As shown in fig. 2, the equal loudness loudspeaker box provided by the present embodiment is provided with a hook 6 on the back cover 5, so that the loudspeaker box can be hung on a wall. As shown in fig. 3, the high frequency unit 2 is mounted on the cabinet 1 via a cone-shaped acoustic waveguide 3, and the acoustic waveguide 3 enables high frequency sound waves to propagate a greater distance in the axial direction of the high frequency unit 2. In a specific practical application, the sound wave guide 3 and the cabinet 1 may be an integral structure, for example, the sound wave guide 3 is recessed in the front panel of the cabinet 1 to form a cone shape.

In this embodiment, the overall size of the sound box is 120mm long, 120mm wide, 480mm high, the height difference of each adjacent unit in the vertical direction is about 100mm, and the box shell 1 is connected with the rear cover 5 through screws. Of course, in other embodiments, the overall dimensions of the enclosure and the height difference between adjacent units can be chosen to have other values, and the enclosure 1 and the rear cover 5 can be connected in other ways, for example by snap-in connection.

In order to better control resonance and reinforce the cabinet 1, so that the bass sound quality is better, in the present embodiment, the skeleton bars located on the side panels are disposed on the inner side of the cabinet 1, as shown in fig. 5 and 6, the skeleton bars generally have other functions, for example, the end of the first skeleton bar 8 is provided with screw holes, so that the cross brace 7 located in the cabinet 1 can connect both ends with the first skeleton bar 8; the end of the second skeleton bar 10 is pre-embedded with a nut so that a bolt passing through the mounting hole 54 (see fig. 7) can be screwed to fixedly connect the rear cover 5 with the cabinet 1; the end of the third frame rod 12 is provided with a slot 121 matched with the limiting rib 51 (see fig. 7), so that the rear cover 5 and the box shell 1 can be connected more stably.

The side panel area of case shell 1 is big, and the strong point is few, and resonance easily takes place when the audio amplifier is worked, and horizontal stay 7 is just so designed for this reason, and as shown in figure 5, the both ends of horizontal stay 7 are connected with two relative side panels respectively, can reduce the resonance of side panel itself, reaches the purpose of restraining the vibration, and the material of horizontal stay 7 can be either metal, also can be plastics.

As shown in fig. 6, in order to further improve the strength and reduce the resonance, the present embodiment further provides a reinforcing cross rib 11 on the inner side of the cabinet 1, and the reinforcing cross rib 11 is connected to the front panel and the side panel of the cabinet 1 and may be designed in a U shape. The number of the reinforcing transverse ribs 11 is multiple, one of the reinforcing transverse ribs is located between the high-frequency unit 2 and the adjacent full-frequency unit 4, and the rest reinforcing transverse ribs are respectively located between the two adjacent full-frequency units 4. In addition, a reinforcing longitudinal rib 9 connected to a front panel and a reinforcing transverse rib 11 of the cabinet 1 may be provided inside the cabinet 1.

As shown in fig. 7, the inner side of the rear cover 5 is provided with a nut 53 for mounting the hook 6, and is further provided with a positioning hole 55 for securing the rear cover 5 in place, and the edge of the rear cover 5 has a groove 52 for mounting soundproof foam in terms of sealing. In addition, the contact part of the full frequency unit 4 and the case shell 1 and the contact part of the sound wave guide 3 and the case shell 1 can be filled with sound insulation foam, so that the effects of sound insulation and vibration reduction are achieved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an equal loudness loudspeaker box, its characterized in that includes high frequency unit (2) and a plurality of full frequency unit (4), full frequency unit (4) are located same one side of the axis of high frequency unit (2), and along keeping away from the direction setting of high frequency unit (2), the distance high frequency unit (2) are farther full frequency unit (4), its axis with contained angle between the axis of high frequency unit (2) is bigger.

2. An equal loudness loudspeaker according to claim 1, characterised in that the angle between the axis of the full frequency unit (4) and the axis of the high frequency unit (2) is 0 ° to 30 °.

3. An equal loudness loudspeaker according to claim 1, characterised in that said full frequency units (4) are arranged in succession on the same arc.

4. The equal-loudness loudspeaker box according to any one of claims 1 to 3, characterized by comprising a box shell (1) and a rear cover (5) covering the back of the box shell (1), wherein the high-frequency unit (2) and the full-frequency unit (4) are mounted on the front of the box shell (1), and a cone-shaped sound waveguide (3) for mounting the high-frequency unit (2) is arranged on the box shell (1).

5. An equal loudness loudspeaker according to claim 4, characterised in that the inside of the enclosure (1) is provided with reinforcing cross ribs (11) connected to the front and side panels of the enclosure (1).

6. An equal loudness loudspeaker according to claim 5, characterised in that the inside of the enclosure (1) is provided with reinforcing longitudinal ribs (9) connected to the frontal panels of the enclosure (1) and to the reinforcing cross ribs (11).

7. An equal loudness loudspeaker according to claim 5, characterised in that said reinforcing cross-ribs (11) are provided between said high frequency unit (2) and said adjacent full frequency units (4) and between any two adjacent full frequency units (4).

8. An equal loudness loudspeaker according to claim 5, characterised in that the inside of the enclosure (1) is provided with skeleton bars on the side panels.

9. An equal loudness loudspeaker according to claim 5, characterised in that a cross brace (7) is provided within the enclosure (1), the cross brace (7) being connected at each end to two opposite side panels.

10. An equal loudness loudspeaker according to claim 9, characterised in that the material of the cross brace (7) is metal or plastic.

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