CN112333601A

CN112333601A - Low-amplitude multi-unit loudspeaker box

Info

Publication number: CN112333601A
Application number: CN202011160729.7A
Authority: CN
Inventors: 蒋加星; 蔡禄军; 朱红明
Original assignee: Wuxi Jiefu Electroacoustic Co Ltd
Current assignee: Wuxi Jiefu Electroacoustic Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-05
Anticipated expiration: 2040-10-27
Also published as: CN112333601B

Abstract

The invention belongs to the technical field of loudspeakers, in particular to a low-amplitude multi-unit loudspeaker box, which comprises a bass unit, a treble unit and a shell; a side wall of the shell is connected with the bass unit and the treble unit through bolts; the shell adopts a laser scanning technology to scan the surface vibration of the shell, finds out an area with uneven vibration amplitude of the surface of the shell, and performs local area reinforcement treatment on the shell; the height difference between the convex point and the concave point on the elastic wave in the bass unit is controlled between 1.6 MM to 1.8MM, the design increases the smoothness of the positioning support piece, so that when the low-amplitude multi-unit loudspeaker box vibrates to produce sound, the amplitude is not limited, the distortion is reduced, and the sound quality is improved, meanwhile, the sound production panel of the high-pitch unit is designed into an arc curved surface with the radian of 1.3 to 1.5, the sound wave sent by the sound production panel is continuously reflected and superposed in the cavity of the high-pitch unit, so that the sent high-frequency sound quality is enhanced, and the sound pressure level is also improved.

Description

Low-amplitude multi-unit loudspeaker box

Technical Field

The invention belongs to the technical field of loudspeakers, and particularly relates to a low-amplitude multi-unit loudspeaker box.

Background

At present, a speaker box installed on a smart television preferably has a power of about 20W according to the size of a space in a user's home, whereas the existing speaker box of about 20W has a high distortion degree and a low high-frequency sound pressure level. Meanwhile, the voice recognition of the smart television influences the recognition degree of voice pickup due to the fact that the shell vibrates when the voice recognition is radiated by the loudspeaker box, and better listening experience cannot be provided for a user. Therefore, the invention provides a high-fidelity low-amplitude multi-unit loudspeaker box capable of enhancing high-frequency response.

Disclosure of Invention

To remedy the deficiencies of the prior art and to solve the problems described in the background, the present invention proposes a low-amplitude multi-element loudspeaker enclosure.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a low-amplitude multi-unit loudspeaker box which comprises a bass unit, a treble unit and a shell, wherein the bass unit is arranged on the shell; a side wall of the shell is connected with the bass unit and the treble unit through bolts; the diameter of the elastic wave of the bass unit is 35-45MM, and the height difference between a convex point and a concave point on the elastic wave is 1.6-1.8 MM; the sound production panel of the high pitch unit is designed into an arc-shaped curved surface with the radian of 1.3-1.5; the shell adopts a laser scanning technology to scan the surface vibration of the shell, finds out the region with uneven vibration amplitude of the surface of the shell, and carries out strengthening treatment on the local region of the shell to reduce the amplitude of the shell.

Preferably, the laser scanning technology is as follows: the shell is placed below the laser scanner, the surface of the shell is scanned by laser, an area with uneven surface vibration amplitude of the shell is found and marked, and after scanning is finished, homogenization strengthening treatment is carried out on the marked points.

Preferably, the positions of the fixing lugs at the two ends of the shell are provided with connecting gaskets with I-shaped section; the connection pad is thereby slid into and embedded within the securing ears at the openings of the securing ears.

Preferably, the housing comprises a lower seat and an upper cover; the inner surface of the lower seat is connected with the inner surface of the upper cover, and a connecting buckle is arranged between the lower seat and the upper cover; the connecting buckle is in a U shape, a clamping pin is arranged on the connecting buckle, and the clamping pin is reversely buckled in a clamping groove formed in the surfaces of the lower seat and the upper cover.

Preferably, criss-cross reinforcing ribs are arranged on the inner surface of the lower seat and the inner surface of the upper cover, and the criss-cross reinforcing ribs are vertically staggered at an angle of 90 degrees.

Preferably, sound-absorbing cotton is paved in the lower seat and the upper cover.

The invention has the technical effects and advantages that:

the height difference between the convex point and the concave point on the elastic wave in the bass unit is controlled to be 1.6-1.8MM, the elasticity wave compliance increased by the design ensures that the amplitude is not limited when the low-amplitude multi-unit loudspeaker box vibrates to produce sound, the distortion is reduced, the tone quality is improved, meanwhile, the sound production panel of the high-pitch unit is designed into an arc-shaped curved surface with the radian of 1.3-1.5, the sound wave produced by the sound production panel is continuously reflected and superposed in the cavity of the high-pitch unit, so that the high pitch of the produced sound is enhanced, and the sound pressure level is also improved.

The surface vibration of the shell is scanned by utilizing a laser scanning technology, an area with uneven vibration amplitude of the surface of the shell is found out, and strengthening treatment is carried out, so that the vibration amplitude of the shell is reduced by about 20%, and therefore during television voice recognition, interference sources are reduced, and the television voice recognition capability is improved.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an internal structural view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is a schematic view of the present invention in use;

in the figure: bass unit 1, treble unit 2, sound panel 21, casing 3, connection gasket 31, lower seat 32, draw-in groove 321, strengthening rib 322, upper cover 33, connector link 34, bayonet 341.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.

As shown in fig. 1 to 5, a low-amplitude multi-unit speaker box according to the present invention includes a bass unit 1, a treble unit 2, and a housing 3; a side wall of the shell 3 is in bolted connection with the bass unit 1 and the treble unit 2; the method is characterized in that: the diameter of the elastic wave of the bass unit 1 is 35-45MM, and the height difference between a convex point and a concave point on the elastic wave is 1.6-1.8 MM; the sound production panel 21 of the high pitch unit 2 is designed into an arc curved surface with the radian of 1.3-1.5; the shell 3 scans the surface vibration of the shell 3 by adopting a laser scanning technology, finds out an area with uneven surface vibration amplitude of the shell 3, and performs strengthening treatment on a local area of the shell 3.

As a specific embodiment of the present invention, the laser scanning technology is: placing the shell 3 below a laser scanner, scanning the surface of the shell 3 by laser, finding out an area with uneven surface vibration amplitude of the shell 3, marking, and performing homogenization strengthening treatment on a marked point after scanning is finished; at present, according to the size of a space in a house of a user, a woofer with power of about 20W is preferably used by a woofer installed on an intelligent television, while the existing loudspeaker box with the power of about 20W has high distortion and weak high-frequency response, and meanwhile, the voice recognition capability of the intelligent television is reduced by the vibration of a woofer shell 3, so that better experience feeling cannot be improved for the user; the height difference between the convex point and the concave point on the sound wave in the bass unit 1 is controlled between 1.6 MM and 1.8MM, the smoothness of the sound wave increased by the design is ensured, the amplitude is not limited when the bass loudspeaker vibrates to produce sound, the distortion is reduced, the tone quality is improved, meanwhile, the sound production panel 21 of the high-pitch unit 2 is designed into an arc-shaped curved surface with the radian of 1.3 to 1.5, the sound wave sent by the sound production panel 21 is continuously reflected and superposed in the cavity of the high-pitch unit 2, the high pitch of the sent sound is enhanced, the sound pressure level is also improved, the surface vibration of the shell 3 is scanned by utilizing a laser scanning technology, an area with the uneven surface vibration amplitude of the shell 3 is found out, the strengthening treatment is carried out, the vibration amplitude of the shell 3 is reduced by about 20 percent, and therefore, during the television voice recognition.

As a specific embodiment of the present invention, the fixing lug positions at both ends of the housing 3 are provided with connecting pads 31 having i-shaped cross-sections; the connecting pad 31 slides into and is embedded in the opening of the fixing lug; casing 3 is when fixed, uses the bolt to fix casing 3 on the TV, and bolt extrusion connection gasket 31 this moment, and connection gasket 31 extrudees the fixed ear at 3 both ends of casing again, and the lifting surface area of the fixed ear of increase avoids behind the bolt direct fixation fixed ear, fixed ear by the emergence of bolt extrusion fracture phenomenon.

As a specific embodiment of the present invention, the housing 3 includes a lower seat 32 and an upper cover 33; the inner surface of the lower seat 32 is connected with the inner surface of the upper seat, and a connecting buckle 34 is arranged between the lower seat 32 and the upper cover 33; the connecting buckle 34 is in a U shape, a clamping pin 341 is arranged on the connecting buckle 34, and the clamping pin 341 is reversely buckled in a clamping groove 321 formed in the surfaces of the lower seat 32 and the upper cover 33; the terminal surface of bass unit 1 and treble unit 2 is settled to casing 3, and upper cover 33 is comparatively weak with lower seat 32 effective connection position, and when woofer vibration sound production, can take place to vibrate between upper cover 33 and the lower seat 32, and block between lower seat 32 and upper cover 33 through connector link 34, further strengthen lower seat 32 and upper cover 33 and be connected stability, avoid sending the emergence of the vibration phenomenon that influences tone quality between upper cover 33 and the lower seat 32.

As a specific embodiment of the present invention, criss-cross reinforcing ribs 322 are disposed on the inner surface of the lower seat 32 and the inner surface of the upper cover 33, and the criss-cross reinforcing ribs 322 are vertically staggered at an angle of 90 degrees; through strengthening rib 322, under the condition that reduces casing 3 material use volume, when reducing the input of cost, guarantee casing 3's intensity, simultaneously, vertically and horizontally staggered's strengthening rib 322 blocks and weakens the reflection of the inside sound of casing 3 gradually, reduces the acoustic echo effect, improves tone quality.

As a specific embodiment of the present invention, sound-absorbing cotton is laid in the lower seat 32 and the upper cover 33; through inhaling the sound cotton, increase the box equivalent volume, eliminate the standing wave, improve woofer tone quality.

The working principle is as follows: the height difference between the convex point and the concave point on the elastic wave in the bass unit 1 is controlled between 1.6 MM and 1.8MM, the design increases the compliance of the elastic wave, so that when the bass loudspeaker vibrates to sound, the amplitude is not limited, the distortion is reduced, the tone quality is improved, meanwhile, the sound production panel 21 of the high pitch unit 2 is designed into an arc curved surface with the radian of 1.3 to 1.5, the sound wave produced by the sound production panel 21 is continuously reflected and superposed in the cavity of the high pitch unit 2, so that the high pitch of the produced sound is enhanced, the sound pressure level is also improved, the surface vibration of the shell 3 is scanned by utilizing the laser scanning technology, an area with uneven surface vibration amplitude of the shell 3 is found out for reinforcement treatment, the vibration amplitude of the shell 3 is reduced by about 20 percent, thereby, when the television voice identification is carried out, the interference source is reduced, the television voice identification capability is improved, and meanwhile, the connector 34 is, further strengthen down seat 32 and upper cover 33 and be connected stability, avoid sending the emergence that influences tone quality's vibration phenomenon between upper cover 33 and the lower seat 32, through strengthening rib 322, under the condition that reduces casing 3 material use volume, when reducing the input of cost, guarantee casing 3's intensity, simultaneously, vertically and horizontally staggered's strengthening rib 322 blocks and weakens the reflection of the inside sound of casing 3 gradually, reduces the sound echo effect, improves tone quality.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A low amplitude multi-unit loudspeaker enclosure comprises a bass unit (1), a treble unit (2) and a housing (3); a side wall of the shell (3) is in bolted connection with the bass unit (1) and the treble unit (2); the method is characterized in that: the diameter of the elastic wave of the bass unit (1) is 35-45MM, and the height difference between a convex point and a concave point on the elastic wave is 1.6-1.8 MM; the sound production panel (21) of the high pitch unit (2) is designed into an arc-shaped curved surface with the radian of 1.3-1.5; the shell (3) scans the surface vibration of the shell (3) by adopting a laser scanning technology, finds out the area with uneven vibration amplitude on the surface of the shell (3), and performs strengthening treatment on the local area of the shell (3).

2. A low amplitude multi-unit loudspeaker enclosure as claimed in claim 1, wherein: the laser scanning technology comprises the following steps: the shell (3) is placed below the laser scanner, the surface of the shell (3) is scanned by laser, an area with uneven surface vibration amplitude of the shell (3) is found and marked, and after scanning is finished, homogenization strengthening treatment is carried out on the marked points.

3. A low amplitude multi-unit loudspeaker enclosure as claimed in claim 1, wherein: connecting gaskets (31) with I-shaped section are arranged at the positions of the fixing lugs at the two ends of the shell (3); the connecting pad (31) is thus slid into and embedded in the opening of the fixing lug.

4. A low amplitude multi-unit loudspeaker enclosure as claimed in claim 3, wherein: the housing (3) comprises a lower seat (32) and an upper cover (33); the inner surface of the lower seat (32) is connected with the inner surface of the upper seat, and a connecting buckle (34) is arranged between the lower seat (32) and the upper cover (33); the connecting buckle (34) is in a U shape, a clamping pin (341) is arranged on the connecting buckle (34), and the clamping pin (341) is reversely buckled in a clamping groove (321) formed in the surfaces of the lower seat (32) and the upper cover (33).

5. A low amplitude multi-unit loudspeaker enclosure as claimed in claim 4, wherein: the internal surface of lower seat (32) and the internal surface of upper cover (33) are equipped with vertically and horizontally staggered strengthening rib (322), and vertically and horizontally staggered strengthening rib (322) are 90 degrees angle vertical staggered arrangement.

6. A low amplitude multi-unit loudspeaker enclosure as claimed in claim 5, wherein: and sound absorption cotton is paved in the lower seat (32) and the upper cover (33).