CN214707941U

CN214707941U - Bass speaker

Info

Publication number: CN214707941U
Application number: CN202120543994.7U
Authority: CN
Inventors: 庄展提
Original assignee: Individual
Current assignee: Guangdong Daxin Electronic Technology Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-11-12
Anticipated expiration: 2031-03-16

Abstract

The utility model provides a bass sound box, including be provided with the cavity the shell with set up in speaker in the cavity, bass sound box still includes: a first diaphragm fixed in the cavity; the second diaphragm is fixed at the opening end of the cavity, and the first diaphragm is positioned between the loudspeaker and the second diaphragm; the acoustic transmission rod is arranged between the first vibrating diaphragm and the second vibrating diaphragm, and two ends of the acoustic transmission rod are respectively fixed on the first vibrating diaphragm and the second vibrating diaphragm; the size of the first diaphragm is larger than the caliber of the loudspeaker, and the size of the second diaphragm is larger than the size of the first diaphragm. The utility model discloses can utilize the woofer of small bore and two purpose-built bass diaphragms, constitute a lever subwoofer audio amplifier, weight can reach the eighth of the bass audio amplifier of same sex ability, and the volume can reach the fourth that only equal power bass audio amplifier, is favorable to save material, reduction consumption and cost.

Description

Bass speaker

Technical Field

The utility model relates to a stereo set technical field, in particular to bass speaker.

Background

A speaker refers to a device that can convert an audio signal into sound. According to the principles of electro-acoustics, the lower the frequency, the greater the amplitude of vibration required, and large vibration amplitudes, which must be accomplished with large vibration units. The bass loudspeaker box is usually a large-caliber bass loudspeaker more than eight inches, but the bass loudspeaker is large in size, heavy in weight, high in cost and large in energy consumption.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bass speaker, it can solve above-mentioned problem.

The utility model provides a bass sound box, including be provided with the cavity the shell with set up in speaker in the cavity, bass sound box still includes: a first diaphragm fixed in the cavity; the second diaphragm is fixed at the opening end of the cavity, and the first diaphragm is positioned between the loudspeaker and the second diaphragm; the acoustic transmission rod is arranged between the first vibrating diaphragm and the second vibrating diaphragm, and two ends of the acoustic transmission rod are respectively fixed on the first vibrating diaphragm and the second vibrating diaphragm; the size of the first diaphragm is larger than the caliber of the loudspeaker, and the size of the second diaphragm is larger than the size of the first diaphragm.

In one embodiment, the cavity includes a first chamber and a second chamber, the first chamber has a smaller cross section than the second chamber, the speaker is disposed in the first chamber, the first diaphragm is disposed in the second chamber, and the second diaphragm is disposed at an open end of the second chamber.

In one embodiment, the first diaphragm is a flat diaphragm.

In one embodiment, the second diaphragm is a V-shaped diaphragm.

In one embodiment, the first diaphragm is made of composite fibers.

In one embodiment, the second diaphragm is made of bamboo fiber.

In an embodiment, the bass sound box further includes a weight block disposed on the first diaphragm.

In one embodiment, the bass sound box further comprises a shock pad disposed at the bottom of the enclosure.

In one embodiment, the acoustically transmissive rod is made of iron.

The utility model discloses can utilize the woofer of small bore and two purpose-built bass diaphragms, constitute a lever subwoofer audio amplifier, weight can reach the eighth of the bass audio amplifier of same sex ability, and the volume can reach the fourth that only equal power bass audio amplifier, is favorable to save material, reduction consumption and cost.

Drawings

Fig. 1 is a schematic view of a bass loudspeaker according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a V-shaped diaphragm according to an embodiment of the present invention.

Reference numerals:

a housing 1; a cavity 10; a first chamber 11; a second chamber 12; a cushion pad 13; a loudspeaker 2; a first diaphragm 3; a second diaphragm 4; a holder 41; a diaphragm 42; one end 421 of the diaphragm; a fastener 43; a damping spring plate; a dust cover 45; an acoustic transmission rod 5;

nuts

61, 62;

Detailed Description

The following description will be made in conjunction with the accompanying drawings.

Referring to fig. 1, as a specific embodiment, a bass box includes a housing 1 provided with a cavity 10, a speaker 2 disposed in the cavity 10, a first diaphragm 3 fixed in the cavity 10, a second diaphragm 4 fixed at an open end of the cavity 10, and an acoustic transmission rod 5 disposed between the first diaphragm 3 and the second diaphragm 4. The first diaphragm 3 is located between the loudspeaker 2 and the second diaphragm 4, and two ends of the acoustic transmission rod 5 are respectively fixed on the first diaphragm 3 and the second diaphragm 4. The size of the first diaphragm 3 is larger than the caliber of the loudspeaker 2, and the size of the second diaphragm 4 is larger than the size of the first diaphragm 3.

The bass sound box with the elements forms a transmission type low-frequency sound amplification system, namely, a lever type bass sound box is realized, and the working principle is as follows: the bass frequency that the woofer 2 of small bore sent forms a driven acoustic pressure in cavity 10, and this acoustic pressure promotes first vibrating diaphragm 3 and produces reciprocating motion, and the size through setting up first vibrating diaphragm is far greater than the bore of speaker 2, consequently can produce bigger low frequency amplitude, and this amplitude transmits the second vibrating diaphragm for through acoustic transmission pole 5, and this second vibrating diaphragm will send the lower low frequency sound wave of the bigger and lower frequency of range. The utility model discloses can utilize the woofer of small bore and two purpose-built bass diaphragms, constitute a lever subwoofer audio amplifier, weight can reach the eighth of the bass audio amplifier of same sex ability, and the volume can reach the fourth that only equal power bass audio amplifier, is favorable to save material, reduction consumption and cost.

In one embodiment, the cavity 10 includes a first chamber 11 and a second chamber 12 which are communicated with each other, the cross section of the first chamber 11 is smaller than that of the second chamber 12, the speaker 2 is disposed in the first chamber 11, the first diaphragm 3 is disposed in the second chamber 12, and the second diaphragm 4 is disposed at an open end of the second chamber 12. In this embodiment, the housing 1 is made of a 20mm thick high-density board, and a 3mm thick fiber sound absorbing material is attached to the inner wall of the cavity 10, so that adverse effects due to standing waves generated by reflection of sound waves in the cavity 10 can be effectively avoided. In the present embodiment, the inner wall of the first chamber 11 is provided with a through hole communicating with the outside, so that the lead wire 21 of the speaker 2 can be allowed to extend from the inside of the first chamber 11 to the outside of the housing 1.

The outer edge of the first diaphragm 3 is sealingly fixed to the inner surface of the first chamber 11 so as to form two closed spaces in front of and behind the speaker 2, so that a sufficient sound pressure can be maintained for the pushing.

In one embodiment, the bottom of the enclosure 1 is fitted with a shock pad 13 that effectively avoids resonance of the enclosure with the surface (e.g., table top) on which the bass enclosure is placed during bass playback.

In one embodiment, the first diaphragm 3 is a flat diaphragm, which may be made of composite fiber, i.e., pressed and synthesized by using wool and paper mixed fiber. The mixed fiber has the advantages of light weight and good bass effect. In one embodiment, in order to avoid excessive vibration caused by excessive amplitude, a weight block with a certain weight may be adhered to the front surface of the first diaphragm 3, so as to increase the damping characteristic of the first diaphragm 3 and avoid excessive vibration distortion.

In one embodiment, the second diaphragm 4 is a V-shaped diaphragm, i.e. the cross section of the second diaphragm 4 is V-shaped. The second diaphragm 4 can be formed by pressing bamboo fiber, and the bamboo fiber diaphragm has the characteristics of small vibration distortion and small harmonic distortion. The V-shaped structure is adopted because the structure can enlarge the vibration area of 1.6-2 times than a plane vibrating diaphragm in a limited box body, so that the output bass sound pressure level is higher, the frequency dive is deeper, and the bass effect is better.

In one embodiment, the acoustically transmissive rod 5 is made of iron, and because ferrous materials have a relatively fast speed of sound wave propagation, the acoustically transmissive rod 5 can be a 2mm iron rod. In the present embodiment, both ends of the acoustic transmission rod 5 are provided with threads that can cooperate with

nuts

61 and 62 provided on the first diaphragm 3 and the second diaphragm 4, thereby achieving connection of the acoustic transmission rod 5 to the first diaphragm 3 and the second diaphragm 4.

Referring to fig. 2, in one embodiment, the second diaphragm 4 is connected to the housing 1 in the form of a V-shaped diaphragm assembly. Specifically, the V-shaped diaphragm assembly includes a bracket 41 having a bowl shape and a diaphragm 42, and an edge of the bracket 41 is fixed to the open end of the second chamber 12. One end 421 of the diaphragm 42 is fixed to the top edge of the bracket 41 by a fastener 43, and the other end of the diaphragm 42 is fixed to the bottom of the bracket 41 by a damping elastic sheet 44. The diaphragm 42 is formed with a through hole in the center portion thereof after being fixed to the holder 41, and in order to prevent foreign substances from entering the interior of the bass sound box through the through hole, the V-shaped diaphragm assembly further includes a dust cover 45 covering the center portion of the diaphragm 42.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bass sound box comprises a shell with a cavity and a loudspeaker arranged in the cavity, and is characterized by further comprising:

a first diaphragm fixed in the cavity;

the second diaphragm is fixed at the opening end of the cavity, and the first diaphragm is positioned between the loudspeaker and the second diaphragm;

the acoustic transmission rod is arranged between the first vibrating diaphragm and the second vibrating diaphragm, and two ends of the acoustic transmission rod are respectively fixed on the first vibrating diaphragm and the second vibrating diaphragm;

the size of the first diaphragm is larger than the caliber of the loudspeaker, and the size of the second diaphragm is larger than the size of the first diaphragm.

2. The bass loudspeaker of claim 1, wherein the cavity comprises a first chamber and a second chamber, the first chamber having a smaller cross-section than the second chamber, the loudspeaker being disposed in the first chamber, the first diaphragm being disposed in the second chamber, the second diaphragm being disposed at an open end of the second chamber.

3. The bass loudspeaker of claim 1, wherein the first diaphragm is a flat diaphragm.

4. The bass loudspeaker of claim 1, wherein the second diaphragm is a V-shaped diaphragm.

5. The bass sound enclosure of any one of claims 1-4, wherein the first diaphragm is made of composite fiber.

6. The bass sound enclosure of any one of claims 1-4, wherein the second diaphragm is made of bamboo fiber.

7. The bass loudspeaker of any one of claims 1-4, further comprising a weight disposed on the first diaphragm.

8. The bass sound enclosure of any one of claims 1-4, further comprising a damping pad disposed at a bottom of the enclosure.

9. The bass sound enclosure of any one of claims 1-4, wherein the acoustically transmissive rod is made of iron.