CN110460939B

CN110460939B - Loudspeaker

Info

Publication number: CN110460939B
Application number: CN201910636679.6A
Authority: CN
Inventors: 赖采缇; 萧胜元; 向玲秋
Original assignee: Merry Electronics Shenzhen Co ltd
Current assignee: Merry Electronics Shenzhen Co ltd
Priority date: 2019-05-15
Filing date: 2019-07-15
Publication date: 2021-07-09
Anticipated expiration: 2039-07-15
Also published as: CN110460939A; TW202044850A; TWI760612B

Abstract

The invention relates to a loudspeaker comprising: a frame having ribs; the rib is provided with a central through hole and a plurality of side through holes; and a sound field partition wall connected to the frame to partition a high sound chamber and a low sound chamber, wherein a total area of the side through holes covered by the sound field partition wall is smaller than a total area of the side through holes uncovered by the sound field partition wall.

Description

Loudspeaker

Technical Field

The invention relates to the field of loudspeakers, in particular to a loudspeaker with a separation of a high sound chamber and a low sound chamber.

Background

Listening to music is an indispensable important part of modern life for regulating tension and monotony, so that the sound quality of music presented by loudspeakers (such as loudspeakers, earphones and the like) of general consumer products can influence the use experience of the loudspeakers when consumers listen to music. As consumers demand sound quality more and more, demands for speakers of general consumer products become more and more important, and therefore, there is a need for speaker manufacturers to continuously pay attention to improve sound quality and improve the user experience of consumers.

Generally, a speaker with a small volume, such as a speaker in an earphone, can only be designed with one sounding unit, and it is difficult to simultaneously consider the sound effect experience of high and low sound. How to improve the quality of the high and low sound output in a speaker with a small volume is one of the directions developed by speaker manufacturers.

Disclosure of Invention

Based on this, the invention provides an innovative speaker for improving the output quality of high and low sound.

A loudspeaker, comprising:

a frame having ribs; the rib is provided with a central through hole and a plurality of side through holes; and

a register partition connected to the frame to partition a high tone chamber and a low tone chamber, wherein the register partition covers side through holes having a total area smaller than that of side through holes not covered by the register partition.

The loudspeaker structure separates the high pitch chamber and the low pitch chamber by the sound field partition wall, so that the high pitch and the low pitch generated by the vibrating membrane have independent sound chambers and surrounding channels to avoid mixing of the high pitch and the low pitch, and the shape design of the side through holes of the frame and the total area difference of the high pitch chamber and the low pitch chamber are matched, thereby reducing the total harmonic distortion ratio and improving the sound quality of high pitch and low pitch output.

In one embodiment, the side through holes are all elongated holes.

In one embodiment, the length directions of the side through holes are approximately parallel.

In one embodiment, the side vias are arranged in a single row.

In one embodiment, the frame is a circular frame, and the length directions of the side through holes are all parallel to the radial direction of the circular frame.

In one embodiment, the frame is a circular frame, and the length directions of the side through holes are perpendicular to the radial direction of the circular frame.

In one embodiment, the central through hole is a circular hole.

In one embodiment, the side vias are radially disposed about the central via.

In one embodiment, each of the side through holes covered by the range partition is smaller than each of the side through holes uncovered by the range partition.

In one embodiment, the treble chamber includes an electromagnetic circuit assembly receiving region and two discrete chamber extensions.

In one embodiment, the plurality of side through holes covered by the soundfield partition wall are divided into two groups of side through holes, and each group of side through holes comprises at least three elongated holes.

In one embodiment, the plurality of side through holes uncovered by the soundfield partition wall are divided into two groups of side through holes, and each group of side through holes comprises at least three elongated holes.

Drawings

FIG. 1 is an exploded view of a speaker according to one embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the components of the loudspeaker of FIG. 1;

fig. 3 is a perspective view of an internal sound generating unit of the speaker according to an embodiment of the present invention;

fig. 4 is a perspective view of another perspective of a soundfield partition of the speaker of fig. 2;

FIG. 5 is a top view of a frame of a speaker according to another embodiment of the present invention;

fig. 6 is a graph comparing the performance of total harmonic distortion of speakers according to various embodiments of the present invention.

The meaning of the reference symbols in the drawings is:

100: loudspeaker

102: outer casing

102 a: outer rear cover

102 b: tin cover

102 c: with central opening

H: high-pitch chamber

103 a: electromagnetic circuit assembly accommodating area

103 b: extension area of sound chamber

104: diapason partition wall

104 a: top wall

104 b: side wall

104 c: side wall

104 d: sound chamber through hole

104 e: airflow regulating member

L: bass sound chamber

106: electromagnetic circuit assembly

106 a: magnetic assembly

106 b: sound source coil

108: driving circuit board

110: net sheet

112: frame structure

112': frame structure

112 a: rib

112 b: center through hole

112 c: side through hole

112 d: side through hole

112 c': side through hole

112 d': side through hole

114: vibration diaphragm

116: front cover

116 a: sound output hole

D1: direction of rotation

D2: direction of rotation

R: and radial direction.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Fig. 1 is an exploded view of a speaker according to an embodiment of the present invention. Loudspeaker 100 includes a soundfield partition 104, a frame 112, a diaphragm 114, a front cover 116, an electromagnetic circuit assembly 106, and a housing 102.

The electromagnetic circuit assembly 106 includes a magnetic assembly 106a and an audio coil 106 b. The audio coil 106b is electrically connected to the driving circuit board 108, and drives the diaphragm 114 to vibrate to generate sound.

When the speaker is combined, the housing 102 composed of the outer rear cover 102a and the earpiece cover 102b is used to enclose the remaining components therein. The front cover 116 is assembled in the middle opening 102c of the receiver cover 102b and has a plurality of sound output holes 116a for sound output.

Referring to fig. 1 to 4, fig. 2 is a perspective view of the soundfield partition wall 104 and the frame 112 of the speaker of fig. 1, fig. 3 is a perspective view of an inner sounding unit of the speaker, and fig. 4 is a perspective view of another view angle of the soundfield partition wall of the speaker of fig. 2.

The range partition 104 is assembled on the frame 112 to separate a high tone chamber H and a low tone chamber L. The sound field partition wall 104 is composed of a top wall 104a and a plurality of side walls. The sidewalls are further divided into planar sidewalls 104c and curved sidewalls 104 b.

The frame 112 has a rib 112a, and the rib 112a has a central through hole 112b and a plurality of side through holes (112c,112 d). When the gamut partition 104 is combined with the frame 112, the gamut partition 104 covers the central through hole 112b and the plurality of side through holes 112c of the frame 112. Therefore, the through hole 112c covered by the gamut partition wall 104 is located in the high tone chamber H, and the through hole 112d not covered by the gamut partition wall 104 is located in the low tone chamber L.

The meshes 110 cover the side through

holes

112c and 112d of the frame 112; or the meshes 110 may cover only the side through holes 112d not covered by the gamut separating wall 104.

In the present embodiment, the total area of the side through holes 112c covered by the gamut partition wall 104 is smaller than the total area of the side through holes 112d not covered by the gamut partition wall 104.

In the embodiment, the plurality of side through holes (112c,112D) are all elongated holes, and the length directions D1 of the plurality of elongated holes 112c are substantially parallel; or the length directions of the plurality of elongated holes 112d are substantially parallel, but not limited thereto.

In the present embodiment, the plurality of side through holes covered by the voice domain partition wall 104 are divided into two groups of side through holes, and each group of side through holes includes at least three elongated holes. The side through holes uncovered by the sound field partition walls 104 are divided into two groups of side through holes, and each group of side through holes comprises at least three elongated holes.

In the present embodiment, the plurality of side through holes 112c or the plurality of side through holes 112d are all configured in a single row, but not limited thereto.

In the embodiment, the frame 112 is a circular frame, and the length directions of the side through holes (112c,112d) are all approximately parallel to the radial direction of the circular frame, but not limited thereto.

In the present embodiment, the central through hole 112b of the frame 112 is a circular hole, and the plurality of side through holes (112c,112d) are radially disposed with the central through hole 112b as the center, but not limited thereto.

In the present embodiment, each of the side through holes 112c covered by the range partition 104 is smaller than each of the side through holes 112d not covered by the range partition 104, but not limited thereto.

The treble chamber H surrounded by the register partition 104 includes an electromagnetic circuit component receiving area 103a and a plurality of discrete chamber extension areas 103 b. The electromagnetic circuit component accommodation region 103a is used for accommodating the electromagnetic circuit component 106, and is named after the function.

In the embodiment of fig. 3, the high-pitched sound chamber H surrounded by the audio domain partition wall 104 includes two discrete sound chamber extension areas 103b, and the electromagnetic circuit component receiving area 103a is a circular area, and the two discrete sound chamber extension areas 103b are sector areas, but not limited thereto.

The plurality of discrete chamber extensions 103b of treble chamber H are in communication with electromagnetic circuit assembly receiving area 103a, e.g., fluid can flow through electromagnetic circuit assembly receiving area 103a to circulate between the plurality of discrete chamber extensions 103 b.

When the speaker is assembled, the electromagnetic circuit component receiving area 103a of the treble chamber H is aligned with or covers the central through hole 112b of the frame 112, and the discrete chamber extension area 103b of the treble chamber H covers the side through hole 112c while exposing the remaining side through holes 112 d.

Each side through hole 112d is located in the gap area formed by the electromagnetic circuit assembly accommodating area 103a and the two adjacent sound chamber extending areas 103b, and is covered on the side through hole 112d through the mesh 110.

In this embodiment, each mesh 110 may cover a plurality of side through holes (112c or 112d), but not limited thereto.

In this embodiment, the side walls (104b, 104c) of the extension area 103b of the sound chamber of the soundfield partition 104 have at least one sound chamber through hole 104d, and an airflow adjusting element 104e (see fig. 1) is disposed to cover the sound chamber through hole 104d (for example, the airflow adjusting element 104e is adhered to the side wall to cover the sound chamber through hole 104 d). Airflow moderators 104e and mesh 110 are porous vent components that evenly distribute airflow between the bass and bass chambers while maintaining the same pressure in the bass and bass chambers.

The range wall 104 is used to separate a high tone chamber H and a low tone chamber L. The treble chamber H is a space enclosed between the range partition 104 and the front cover 116, and the bass chamber L is a space enclosed between the range partition 104, the mesh 110, and a housing of the speaker (e.g., the housing 102 composed of the outer rear cover 102a and the earpiece cover 102b of fig. 1). The volume enclosed by the bass chamber L is generally larger than the volume enclosed by the treble chamber H, but not limited thereto. The high tone chamber H and the low tone chamber L are not completely blocked by the register partition 104. as discussed above, the register partition 104 has the register through holes 104d and the air flow adjusting members 104e, etc. designed to evenly distribute the air flow between the high tone chamber and the low tone chamber.

Fig. 5 is a top view of a frame of a speaker according to another embodiment of the present invention. The frame 112' is different from the aforementioned frame 112 in that the length direction of the side through-holes is in relation to the radial direction of the frame. In the present embodiment, the length direction of the side through hole is substantially perpendicular to the radial direction R of the circular frame 112 ', for example, the length direction D2 of the side through hole 112c ' is substantially perpendicular to the radial direction R of the circular frame 112 '. The length direction of the side through hole 112d 'is also substantially perpendicular to the radial direction R of the circular frame 112'. Similar to the frame 112 design, the total area of the plurality of side through holes 112c ' of the frame 112 ' is less than the total area of the plurality of side through holes 112d '.

Please refer to fig. 6, which is a diagram illustrating a performance comparison of total harmonic distortion of speakers according to various embodiments of the present invention. The speaker embodiments compared in this figure respectively include three frames of type A, B, C, the diagrams of which are respectively shown in the figure. The total area of the high tone chamber inside through holes (4X2 through holes) of the frame of type a is smaller than the total area of the low tone chamber inside through holes (6X2 through holes). The total area of the high-pitched chamber inner through holes (3X2 smaller through holes) of the frame of type B is smaller than the total area of the low-pitched chamber inner through holes (3X2 larger through holes). The frame of type C has a total area of treble chamber inside through holes equal to a total area of bass chamber inside through holes. Referring to the Total Harmonic Distortion (THD) ratio curve for speakers of type A, B, C, at frequencies between 30Hz and 200Hz, the type a speakers are smaller than the type B speakers and the type B speakers are smaller than the type C speakers with respect to the Total Harmonic Distortion ratio of the speaker output sound effects. Specifically, at a frequency of 100Hz, the total harmonic distortion ratio of type a is 4.17%, the total harmonic distortion ratio of type B is 5.60%, and the total harmonic distortion ratio of type C is 6.53%. At a frequency of 200Hz, the total harmonic distortion ratio of type a is 0.66%, the total harmonic distortion ratio of type B is 0.87%, and the total harmonic distortion ratio of type C is 1.43%. The lower the total harmonic distortion ratio is, the more realistic the output sound effect of the speaker can be represented. In addition, the elongated side vias on the frame of type A, B also help to reduce the total harmonic distortion ratio.

In summary, the loudspeaker structure of the present invention separates the high tone chamber and the low tone chamber by the sound field partition wall, so that the high tone and the low tone generated by the diaphragm have independent sound chambers and surrounding channels to avoid mixing of the high tone and the low tone, and further, the shape design of the side through holes of the frame and the total area difference between the high tone chamber and the low tone chamber are matched to reduce the total harmonic distortion ratio and improve the sound quality of the high tone and the low tone output.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A loudspeaker, comprising:

a register partition connected to the frame to partition a high tone chamber and a low tone chamber, wherein the center through hole and a portion of the side through holes covered by the register partition correspond to the high tone chamber, and the side through holes uncovered by the register partition correspond to the low tone chamber; wherein a total area of the side through holes covered by the soundfield partition wall is smaller than a total area of the side through holes not covered by the soundfield partition wall.

2. The speaker of claim 1, wherein each of the plurality of side through holes is an elongated hole.

3. The speaker of claim 2, wherein the length directions of the plurality of side through holes are parallel.

4. The speaker of claim 2, wherein the side through holes are arranged in a single row.

5. The speaker of claim 2, wherein the frame is a circular frame, and the length directions of the side through holes are parallel to the radial direction of the circular frame.

6. The speaker of claim 2, wherein the frame is a circular frame, and the length directions of the plurality of side through holes are perpendicular to the radial direction of the circular frame.

7. The loudspeaker of claim 1 wherein said central opening is a circular hole.

8. The loudspeaker of claim 1, wherein the side through holes are radially arranged about the central through hole.

9. The speaker as claimed in claim 1, wherein each of the side through holes covered by the soundfield partition is smaller than each of the side through holes not covered by the soundfield partition.

10. The loudspeaker of claim 1 wherein said treble chamber includes an electromagnetic circuit assembly receiving area and two discrete chamber extensions.

11. The speaker as claimed in claim 1, wherein the plurality of side through holes covered by the soundfield partition wall are divided into two groups of side through holes, each of the groups of side through holes comprising at least three elongated holes.

12. The speaker as claimed in claim 1, wherein the plurality of side through holes uncovered by the soundfield partition wall are divided into two groups of side through holes, each of the groups of side through holes including at least three elongated holes.