CN218243832U

CN218243832U - Loudspeaker cone and loudspeaker

Info

Publication number: CN218243832U
Application number: CN202222401234.XU
Authority: CN
Inventors: 高鹏; 董占青; 顾晗煜; 何敏华; 汤振宇
Original assignee: Suzhou Sonavox Electronics Co Ltd
Current assignee: Suzhou Sonavox Electronics Co Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-06
Anticipated expiration: 2032-09-09
Also published as: WO2024050971A1

Abstract

The utility model discloses a speaker sound basin and speaker. The utility model provides a loudspeaker sound basin, has the edge that is used for connecting the basin frame, the sound basin mesopore that is used for connecting the voice coil loudspeaker voice coil is offered at the middle part of sound basin, the sound basin has a pair of long limit and a pair of minor face, the sound basin has a plurality of rib, rib upwards arches or undercut, and is a plurality of rib is located respectively mesoporous relative both sides and symmetry setting in sound basin. The utility model discloses a loudspeaker sound basin can effectively reduce the speaker distortion.

Description

Loudspeaker cone and loudspeaker

Technical Field

The utility model relates to a speaker sound basin and speaker.

Background

When the loudspeaker works, the voice coil is electrified and then becomes an electromagnet, acting force is generated between the voice coil and the permanent magnet of the magnetic circuit system, and the voice coil continuously vibrates to drive the cone to produce sound. However, this process cannot be regarded as a simple piston motion, the tub body of the cone is not a completely rigid body, and due to the influence of the processing technology and the material unevenness of the tub body, the tub body may generate a split vibration during the vibration, which causes the occurrence of peaks and/or valleys in the middle frequency region and the high frequency region of the speaker frequency, resulting in distortion.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a speaker sound basin and speaker can effectively reduce the distortion.

According to the utility model discloses a technical scheme as follows:

the utility model provides a loudspeaker sound basin, has the edge that is used for connecting the basin frame, the sound basin mesopore that is used for connecting the voice coil loudspeaker voice coil is offered at the middle part of sound basin, the sound basin has a pair of long limit and a pair of minor face, the sound basin has a plurality of rib, rib upwards arches or undercut, and is a plurality of rib is located respectively mesoporous relative both sides and symmetry setting in sound basin.

In a preferred embodiment, the reinforcement portion extends in a direction from the cone aperture to the rim of the cone.

In a preferred embodiment, the inner end of the reinforcement part is close to the center hole of the cone, and the outer end of the reinforcement part is close to the short side of the cone.

In a preferred embodiment, the orthographic projection of the cone on the horizontal plane is an oval or racetrack shape with a hole in the middle.

In a preferred embodiment, a part of the cone is arched upwards or concaved downwards to form the reinforcement part.

In a preferred embodiment, the cone has a plurality of connecting portions respectively connected to the plurality of elastic waves, and each of the connecting portions is recessed downward.

In a preferred embodiment, the connecting portions are disposed on opposite sides of the sound cone central hole and symmetrically disposed with respect to the sound cone central hole, and the connecting portions are located between adjacent reinforcing portions.

In a preferred embodiment, the cone slopes gradually downwards from the rim to the cone aperture.

In a preferred embodiment, a yoke ring for connecting the cone frame is connected to the edge of the cone.

The utility model discloses still adopt following technical scheme:

a loudspeaker comprises a cone frame, a sound cone, a voice coil and a magnetic circuit system with a magnetic gap, wherein the outer edge of the sound cone is connected to the cone frame; the upper end part of the voice coil is connected to the middle part of the cone, and the lower end part of the voice coil is inserted into the magnetic gap; the magnetic circuit system is arranged on the basin frame; the cone is the loudspeaker cone as described above.

Further, the speaker refers to a car speaker, and further, a headrest speaker or a ceiling speaker.

The utility model adopts the above scheme, compare prior art and have following advantage:

the utility model discloses a loudspeaker sound basin has a pair of long limit and a pair of minor face, therefore is shapes such as non-circular ellipse or runway shape, and has a plurality of reinforcements that upwards arch up or undercut, and this a plurality of reinforcements set up relatively sound basin cavity symmetry, avoids appearing crest and/or trough in the intermediate frequency district and the high frequency district of speaker frequency, can effectively reduce the speaker distortion, and the total harmonic distortion degree of each frequency channel is all lower, and sound effect is more close to the original sound.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of an automotive speaker according to embodiment 1 of the present invention.

Fig. 2 is an exploded schematic view of an automotive speaker according to embodiment 1 of the present invention.

Fig. 3 is a top view of an automotive speaker according to embodiment 1 of the present invention.

Fig. 4 is a perspective view of a sound cone according to embodiment 1 of the present invention.

Fig. 5 is a sectional view of the cone shown in fig. 4 in a direction perpendicular to the short side.

Fig. 6 is a perspective view of a sound cone according to embodiment 2 of the present invention.

Fig. 7 is a perspective view of a cone of a comparative example.

Fig. 8 is a graph comparing distortion curves of speakers.

The reference numbers are as follows:

1. a basin stand; 11. a housing; 111. a long side; 112. a short side; 12. a magnetic circuit system mounting base; 13. a damper mount;

2. a sound basin; 20. a yoke ring; 21. a first connection portion; 22. a center hole of the sound basin; 23. a reinforcing portion;

3. a voice coil; 30. a dust cover; 31. a lead wire; 32. soldering lugs;

4. a magnetic circuit system; 40. a magnetic gap; 41. t iron; 42. magnetic steel; 43. a front panel;

5. elastic wave; 51. an outer edge; 52. a corrugated portion; 53. a second connecting portion.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, enables the advantages and features of the invention to be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The utility model discloses in, "interior", "outer" is defined with the central line of voice coil loudspeaker voice coil as the reference, and in order to be interior apart from the nearer position of voice coil loudspeaker voice coil central line, otherwise be outer. The terms "upper", "lower" and "horizontal" are intended to facilitate the understanding of the structure of the speaker of the vehicle by those skilled in the art, and are not intended to limit the state of the speaker after it is mounted on the vehicle; for example, the speaker may be mounted to the lower surface of a tilting or upright member or member within the automobile.

Example 1

The embodiment provides an automobile loudspeaker and a sound cone thereof, wherein the automobile loudspeaker is used in an automobile sound system. Further, the automobile loudspeaker is a headrest loudspeaker mounted on a headrest of an automobile seat and/or a ceiling loudspeaker mounted on a ceiling of an automobile. Referring to fig. 1 to 5, the car speaker includes a frame 1, a cone 2, a voice coil 3, and a magnetic circuit system 4 having a magnetic gap 40. The outer edge of the cone 2 is connected to the basin stand 1; the upper end of the voice coil 3 is connected to the middle of the cone 2, and the lower end of the voice coil 3 is inserted into the magnetic gap 40; the magnetic circuit system 4 is arranged on the basin stand 1. This automotive speaker still includes two independent and the play ripples 5 that the interval set up, and two play ripples 5 are located the relative both sides of voice coil loudspeaker voice coil 3 respectively, and some edge connection in basin frame 1 of each play ripples 5, and sound basin 2 has two undercut's first connecting portion 21, and first connecting portion 21 and play ripples 5 are connected.

The orthographic projection of the frame 1 on the horizontal plane is rectangular or rounded rectangle, so that the whole loudspeaker has a long and narrow shape and can be conveniently installed in an automobile without occupying too much space in the automobile. Further, the frame 1 includes a housing 11, the housing 11 is hollow and has open upper and lower ends, the voice coil 3, the magnetic circuit system 4 and the damper 5 are all accommodated in the housing 11 and do not substantially expose out of the housing 11, the housing 11 is mounted on other parts (such as a headrest framework or a shed roof) of the automobile, and the housing 11 supports and protects the voice coil 2, the voice coil 3, the magnetic circuit system 4 and the damper 5. The outer edge of the cone 2 is connected to the upper surface of the shell 11; specifically, the cone 2 covers the upper end of the housing 11, the outer edge of the cone 2 is connected to the upper surface of the housing 11 by a yoke ring 20, and the yoke ring 20 has elasticity and is bonded to the upper surface of the housing 11. The housing 11 has a pair of oppositely disposed long sides 111 (extending in the left-right direction in fig. 2) and two short sides 112 (extending in the direction perpendicular to the paper surface in fig. 2) connected between the long sides 111, and the two long sides 111 and the two short sides 112 meet to form a space in the shape of a rectangle, a rounded rectangle or a racetrack, that is, the short sides 112 extend along a straight line or an arc line. As used herein, "racetrack" refers to a shape that is made up of a rectangle and two semi-circles, with the rectangle being located between the two semi-circles.

The basin stand 1 further comprises a magnetic circuit system mounting seat 12, the magnetic circuit system mounting seat 12 is located in the shell 11 and fixedly connected with the middle of the long side 111, and a space is reserved between the magnetic circuit system mounting seat 12 and the short side 112 of the shell 11 so as to provide a mounting space for the damper 5. The magnetic circuit system 4 is disposed on the magnetic circuit system mounting base 12. Specifically, the magnetic circuit system mounting base 12 is hollow cylindrical or annular as a whole, and the magnetic circuit system 4 is fixed in the magnetic circuit system mounting base 12. The magnetic circuit system mounting base 12 is fixed to the middle of the long side 111 of the housing 11 through a plurality of connecting ribs.

The frame 1 further comprises two bayonets mounts 13. Referring to fig. 2, two damper mounting members 13 are respectively disposed on the left and right sides of the magnetic circuit system mounting base 12, and each damper mounting member 13 is provided with one damper 5, that is, the damper 5 is respectively disposed between the left and right opposite sides of the magnetic circuit system mounting base 12 and the housing 11. Specifically, the damper mount 13 has a substantially arc shape in plan view. The damper mounting member 13 is fixedly attached to the left or right end of the short side 112 and/or the long side 111 of the housing 11 by a plurality of connecting ribs. In this embodiment, the damper mounting member 13 is fixedly disposed between the long sides 111 through the connecting rib, and is not connected to the short sides 112 at intervals. Further, the damper mount 13, the magnetic circuit system mount 12, the connector, and the housing 11 are integrally molded, for example, integrally injection-molded from plastic or the like. The two damper mounting members 13 are symmetrically arranged with respect to the magnetic circuit system mounting base 12.

The damper 5 includes an outer edge connected to the damper mount 13, a second connection portion 53 connected to the first connection portion 21 of the cone 2, and a corrugated portion 52 between the outer edge 51 and the second connection portion 53. The outer edge 51 is horizontally arranged and is lower than the corrugated part 52 and the second connecting part 53; the outer edge 51 is in the shape of an arc or a portion of a rounded rectangle, and the outer edge 51 is bonded to the upper surface of the spider mount 13. The corrugated portion 52 has a plurality of peaks and valleys and is entirely higher than the outer edge 51. The bellows 52 is provided around the second connection portion 53, and spans half to three quarters of the circumference of the second connection portion 53. The second connecting portion 53 is horizontally disposed, and the lower surface of the first connecting portion 21 of the cone 2 is also horizontally disposed, and they are bonded to each other.

The sound cone 2 is arranged in bilateral symmetry, and two of the first connecting parts 21 are arranged symmetrically. The middle part of the cone 2 is provided with a cone center hole 22, the voice coil 3 penetrates the cone center hole 22, and the upper end of the voice coil 3 is covered with a dust cover 30. The orthographic projection of the sound cone 2 on the horizontal plane is in an oval shape or a track shape with a hole in the middle, and the sound cone 2 gradually inclines downwards from the edge to the sound cone central hole 22, namely, the main body part of the sound cone 2 is obliquely arranged and is approximately similar to a cone. The cone 2 also has a pair of long sides and a pair of short sides.

The cone 2 further has a plurality of reinforcing portions 23, the reinforcing portions 23 are upwardly arched or downwardly concave, and the plurality of reinforcing portions 23 are respectively located at opposite sides of the cone central hole 22 and symmetrically arranged. The reinforcement portion 23 extends in a direction from the cone center hole 22 toward the short side 112 of the frame 1. In the present embodiment, the reinforcement portion 23 is formed by partially upwardly arching the cone 2, and extends radially outward from the center of the cone 2 as a whole. The number of the reinforcing portions 23 is four, and the inner end of each reinforcing portion 23 is close to the cone center hole 22, and the outer end thereof is close to the short side of the cone 2, and the whole extends in a straight line. In the present embodiment, the reinforcement portion 23 is integrally provided with the main body portion of the bowl 2, and is formed to be upwardly arched from the main body of the bowl 2. In other embodiments, the reinforcement portion 23 may be fixed to the upper surface or the lower surface of the main body of the cone 2, and may have a bar shape as a whole. The first connecting portion 21 is located between the adjacent reinforcing portions 23. The sound basin 2 is fillet rectangle project organization to increased the rib, compared with the traditional oval sound basin that is, the rigidity of the sound basin of this embodiment is better, can be more stable in the middle of the process of speaker vibration, the focus is comparatively stable, and it is relatively easy to finalize the design production.

The upper end of the voice coil 3 passes through the hollow of the cone 2 and is exposed above the cone 2, and the voice coil 3 is bonded with the hole wall of the hole 22 in the cone, and the lower end of the voice coil 3 is inserted into the magnetic gap 40 of the magnetic circuit system 4. The upper end of the voice coil 3 is conductively connected to a pair of leads 31; lead wire through holes are formed in the cone 2, a pair of soldering lugs 32 (specifically embedded in the elastic wave mounting piece 13 of the cone frame 1) is fixedly arranged on the cone frame 1, and the lead wires 31 penetrate through the lead wire through holes and then are in conduction connection with the soldering lugs 32. The pair of solder pads 32 may be used to connect to a power amplifier or the like for accessing a sound source to be played.

The number of the magnetic circuit systems 4 is one, each magnetic circuit system 4 comprises a T iron 41, a magnetic steel 42 sleeved on the T iron 41 and a front sheet 43, the front sheet 43 is laminated on the magnetic steel 42, and the lower surface of the front sheet 43 is bonded with the upper surface of the magnetic steel 42; the magnetic steel 42 is laminated on the base of the T iron 41, and the lower surface of the magnetic steel 42 is bonded with the upper surface of the base of the T iron 41; the front piece 43 and the magnetic steel 42 are sleeved on the column part of the T-iron 41, and the column part extends upwards from the base of the T-iron 41. The magnetic gap 40 is formed between the outer surface of the T-bar 41 and the inner surfaces of the magnetic steel 42 and the front piece 43. The magnetic steel 42 and the front piece 43 are fixedly connected with the basin stand 1; specifically, the magnetic steel 42 and the front sheet 43 are inserted into the magnetic circuit system mounting base 12 and fixedly connected to the magnetic circuit system mounting base 12, for example, by bonding.

Example 2

The present embodiment differs from embodiment 1 in the shape of the cone 2. Referring to fig. 6, the orthographic projection of the sound cone 2 on the horizontal plane is in a track shape, the middle part of the sound cone is rectangular, and the left side and the right side of the sound cone are in a semicircular shape. Four reinforcing portions 23 extend from the cone center hole 22 to the left and right sides of the cone 2.

Comparative example

The car speaker of the comparative example is different from that of example 1 in the cone 2. Referring to fig. 7, the sound cone 2 is not provided with the first connecting portion depressed downward and the reinforcing portion arched upward. The height of the car speaker of the comparative example was substantially the same as that of the car speaker of example 2, and the mounting position of the damper was slightly higher.

The same performance test was performed on the car speakers of examples 1 and 2 and the comparative example, and the distortion curve is shown in fig. 8. In fig. 8, the thickest curve represents the distortion curve of the car speaker of example 2, the thicker curve represents the distortion curve of the car speaker of example 3, and the thinnest curve represents the distortion curve of the car speaker using the cone 2 of the comparative example. It can be seen that the total harmonic distortion of the speakers of example 2 and example 3 in each frequency band is lower than that of the speaker using the cone 2 of the comparative example, the sound effect is closer to the original sound, and the distortion is smaller.

The sound cone 2 of the above embodiment avoids the following problems: the cone 2 is not a completely rigid body, and is affected by the processing technology and the uneven material of the cone 2, so that the cone 2 can generate segmentation vibration when vibrating, and peaks and/or troughs appear in a middle-frequency region and a high-frequency region of the frequency of the loudspeaker, thereby causing distortion. The sound cone 2 of the above embodiment can effectively reduce distortion.

The automobile loudspeaker of the embodiment reduces the total height of the loudspeaker, increases the vibration amplitude of the loudspeaker, effectively reduces the resonance frequency of the loudspeaker so as to improve the depth of low frequency, solves the problems of low-tone extension caused by the reduction of the area of the positioning support piece in the traditional loudspeaker structure, and solves the problems of low power, transient distortion, transverse motion distortion of the voice coil 3 and the like when no positioning support piece is arranged, realizes the function of miniaturization and high power of the loudspeaker, and can be installed in a narrow space so as to save the space in an automobile; by adopting the non-circular cone 2, compared with the common circular drum paper cone 2, the radiation area of the loudspeaker is enlarged, and the low frequency volume of the loudspeaker is increased. The automobile loudspeaker has better stability.

As used in this specification and the appended claims, the terms "comprises" and "comprising" are intended to only encompass the explicitly identified steps and elements, which do not constitute an exclusive list, and that a method or apparatus may include other steps or elements.

It is further understood that the use of "a plurality" in this disclosure means two or more, as other terms are analogous.

It will be further understood that the terms "first," "second," and the like, are used to describe various information and should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

The above-mentioned embodiments are only for illustrating the technical idea and features of the present invention, and are a preferred embodiment, which aims to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and can not limit the protection scope of the present invention.

Claims

1. The utility model provides a loudspeaker sound basin, has the edge that is used for connecting the basin frame, the sound basin mesopore that is used for connecting the voice coil loudspeaker voice coil is offered at the middle part of sound basin, the sound basin has a pair of long limit and a pair of minor face, a serial communication port, the sound basin has a plurality of rib, the rib upwards arches or undercut, and is a plurality of the rib is located respectively the relative both sides and the symmetry setting in sound basin mesopore.

2. A loudspeaker cone according to claim 1, wherein the reinforcement extends in a direction from the cone aperture to the edge of the cone.

3. A loudspeaker cone according to claim 2, wherein the inner end of the reinforcement portion is adjacent the cone central opening and the outer end of the reinforcement portion is adjacent the cone short side.

4. The loudspeaker cone of claim 2 wherein the orthographic projection of the cone on a horizontal plane is elliptical with a hole in the middle or racetrack shaped.

5. A loudspeaker cone according to claim 1, wherein a part of the cone is upwardly domed or downwardly concave to form the stiffening portion.

6. The loudspeaker cone according to claim 1 wherein the cone has a plurality of connection portions to which a plurality of elastic waves are respectively connected, each of the connection portions being recessed downward.

7. The loudspeaker cone of claim 6 wherein a plurality of the connections are disposed on opposite sides of and symmetrically about the cone central opening, the connections being between adjacent reinforcement portions.

8. A loudspeaker cone according to claim 1, wherein the cone slopes gradually downwards from the rim to the cone aperture.

9. A loudspeaker cone according to claim 1, wherein a yoke ring is attached to the rim of the cone for attachment to a cone frame.

10. A loudspeaker comprises a cone frame, a sound cone, a voice coil and a magnetic circuit system with a magnetic gap, wherein the outer edge of the sound cone is connected to the cone frame; the upper end part of the voice coil is connected to the middle part of the cone, and the lower end part of the voice coil is inserted into the magnetic gap; the magnetic circuit system is arranged on the basin frame; characterised in that the cone is a loudspeaker cone as claimed in any one of claims 1 to 9.