CN115474138A - Loudspeaker - Google Patents

Abstract

The embodiment of the disclosure provides a loudspeaker. The speaker includes a carrier, a first speaker assembly and a second speaker assembly. The first speaker component comprises a first magnet, a first coil and a first diaphragm. The first magnet is arranged on the bearing seat. The first coil corresponds to the first magnet. The first diaphragm is connected to the first coil. The second loudspeaking component comprises a second magnet, a second coil and a second diaphragm. The second magnet is arranged on the bearing seat. The second coil corresponds to the second magnet. The second diaphragm is connected to the second coil. The first loudspeaking component and the second loudspeaking component are symmetrical to the bearing seat. The first coil and the second coil are configured to receive a current, so that the first coil drives the first diaphragm and the second coil drives the second diaphragm to move simultaneously, and the first diaphragm and the second diaphragm have the same displacement magnitude but opposite directions.

Description

Loudspeaker

Technical Field

The present disclosure relates to a speaker, and more particularly, to a speaker capable of eliminating self-vibration.

Background

With the development of technology, many electronic devices (e.g., notebook computers) are popular and popular products nowadays. Among them, the notebook computer is popular and popular among the current consumer products, and users can execute various applications on the notebook computer to achieve various required purposes, such as watching movies, playing games, browsing web pages or watching electronic books.

Generally, electronic devices such as notebook computers are equipped with at least one speaker configured to emit sounds such as music. However, the conventional speaker generates unnecessary vibration when emitting sound, and the vibration may collide with the casing of the notebook computer to cause noise, thereby affecting the effect of the sound emitted by the speaker.

Therefore, how to design a speaker capable of avoiding unnecessary vibration is a problem to be researched and solved.

Disclosure of Invention

In view of the above, the present disclosure provides a speaker to solve the above problems.

The present disclosure provides a speaker, which includes a bearing seat, a first speaker assembly and a second speaker assembly. The first speaker component comprises a first magnet, a first coil and a first diaphragm. The first magnet is arranged on the bearing seat. The first coil corresponds to the first magnet. The first diaphragm is connected to the first coil. The second speaker component comprises a second magnet, a second coil and a second diaphragm. The second magnet is arranged on the bearing seat. The second coil corresponds to the second magnet. The second diaphragm is connected to the second coil. The first loudspeaking component and the second loudspeaking component are symmetrical to the bearing seat. The first coil and the second coil are configured to receive a current, so that the first coil drives the first diaphragm and the second coil drives the second diaphragm to move simultaneously, and the displacement of the first diaphragm and the displacement of the second diaphragm are the same in size but opposite in direction.

According to some embodiments of the present disclosure, the speaker further includes a first frame and a second frame, the first frame is fixed to the second frame, and the first frame and the second frame respectively clamp the first diaphragm and the second diaphragm.

According to some embodiments of the present disclosure, the carrier has a first axial direction and a second axial direction, the carrier has two sidewalls, two vents are formed on the two sidewalls, and the two vents are arranged along the second axial direction and are symmetrical to the first axial direction.

According to some embodiments of the present disclosure, the first frame and the second frame are formed with two through holes, and the two through holes overlap the two airing holes when viewed along the second axial direction.

According to some embodiments of the present disclosure, the first speaker assembly, the carrier, and the second speaker assembly are arranged along a first direction, and when viewed along the first direction, a distance between one of the two sidewalls and the first magnet is equal to a distance between the other of the two sidewalls and the first magnet.

According to some embodiments of the present disclosure, the carrier further includes two first cantilevers and two second cantilevers, the two first cantilevers and the two second cantilevers are symmetric to the first axis, the first coil is electrically connected to the two first cantilevers, and the second coil is electrically connected to the two second cantilevers.

According to some embodiments of the present disclosure, the first diaphragm has an inner portion and an outer portion, the outer portion surrounds the inner portion, and the inner portion has a higher hardness than the outer portion.

According to some embodiments of the present disclosure, the inner side is made of paper, carbon fiber or metal material and the outer side is made of foam or plastic material.

According to some embodiments of the present disclosure, the first coil is connected in parallel to the second coil, the first coil and the second coil have the same number of windings and winding length, and the first magnet and the second magnet have the same magnetic permeability.

According to some embodiments of the present disclosure, the first speaker assembly and the second speaker assembly have the same size, and the first diaphragm is rectangular, circular or elliptical.

The present disclosure provides a speaker, which includes a carrier and a pair of speaker assemblies (a first speaker assembly and a second speaker assembly). The first speaker component and the second speaker component are symmetrical to the carrier, and have the same size, material and parameters.

Therefore, when the loudspeaker receives the current, the first electromagnetic driving force and the second electromagnetic driving force which push the first vibrating diaphragm and the second vibrating diaphragm to vibrate have the same magnitude and opposite directions, so that the bearing seat cannot be influenced by the electromagnetic driving force. That is, the carrier does not have any movement in the Z-axis when the speaker is emitting sound.

Therefore, based on the design of this disclosure, when the speaker receives the current signal and makes a sound, the speaker does not generate any displacement in the Z-axis direction, and therefore the speaker is mounted on any electronic device (for example, a tablet computer or a smart phone) without causing vibration noise and affecting the sound effect output by the speaker.

Drawings

The present disclosure will become more fully understood from the detailed description given herein below and the accompanying drawings. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale and are used for illustrative purposes only. In fact, the dimensions of the various features may be arbitrarily expanded or reduced for clarity of presentation.

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

Fig. 2 is an exploded view of a speaker according to an embodiment of the present disclosure.

Fig. 3 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A loudspeaker along cross-sectional linebase:Sub>A-base:Sub>A according to an embodiment of the present disclosure.

FIG. 4 is a graph showing frequency versus displacement for a loudspeaker according to an embodiment of the present disclosure and a conventional loudspeaker.

Fig. 5 is a top view of a partial structure of a speaker according to an embodiment of the present disclosure.

Fig. 6 is a bottom view of a partial structure of a speaker according to an embodiment of the present disclosure.

Fig. 7 is a front view of a speaker according to an embodiment of the present disclosure.

Fig. 8 is a top view of a first diaphragm according to an embodiment of the present disclosure.

Fig. 9 and 10 are schematic top views of first diaphragms according to different embodiments of the disclosure.

The reference numbers are as follows:

100 speaker

110 first loudspeaker assembly

120 second speaker assembly

200 bearing seat

210 bottom plate

220 side wall

221 air holes

230 side wall

231 air holes

240 first cantilever

250 second cantilever

310 first magnet

320: second magnet

410 first coil

420 second coil

510 first diaphragm

510A first diaphragm

510B first diaphragm

511 inner part

512 outer part

520 second diaphragm

610 first frame

620: second frame

630 through hole

AX1 first axial direction

AX2: second axial direction

CV1 curve

CV2: straight line

D1 first direction

D2 the second direction

DP1 first Displacement

DP2 second Displacement

F1 first electromagnetic driving force

F2 second electromagnetic driving force

X is the X axis

Y is the Y axis

Z is the Z axis

Detailed Description

In order to make the objects, features and advantages of the present disclosure more comprehensible, embodiments accompanied with figures are described in detail below. The configuration of the elements in the embodiments is illustrative and not intended to limit the disclosure. And the reference numerals in the embodiments are partially repeated, so that the relevance between different embodiments is not intended for the sake of simplifying the description. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are directions with reference to the attached drawings only. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present disclosure.

Ordinal numbers such as "first," "second," "third," etc., in the specification and in the claims, do not have a sequential relationship with each other, but are used merely to identify two different elements having the same name.

Referring to fig. 1 to 3, fig. 1 isbase:Sub>A schematic perspective view ofbase:Sub>A speaker 100 according to an embodiment of the present disclosure, fig. 2 is an exploded view of the speaker 100 according to an embodiment of the present disclosure, and fig. 3 isbase:Sub>A schematic cross-sectional view of the speaker 100 alongbase:Sub>A sectional linebase:Sub>A-base:Sub>A according to an embodiment of the present disclosure. In this embodiment, the speaker 100 may include a carrier 200, a first speaker element 110 and a second speaker element 120.

The second speaker elements 120, the carrier 200 and the first speaker elements 110 are sequentially arranged along a first direction D1. Specifically, as shown in fig. 2 and fig. 3, the first speaker assembly 110 and the second speaker assembly 120 are symmetrically disposed on the upper and lower sides of the carrier 200.

The first speaker assembly 110 includes a first magnet 310, a first coil 410 and a first diaphragm 510. The first magnet 310 is fixedly disposed on the carrier 200, the first coil 410 corresponds to the first magnet 310, and the first diaphragm 510 is fixedly connected to one side of the first coil 410.

Similarly, the second speaker component 120 includes a second magnet 320, a second coil 420 and a second diaphragm 520. The second magnet 320 is fixedly disposed on the carrier 200, the second coil 420 corresponds to the second magnet 320, and the second diaphragm 520 is fixedly connected to one side of the second coil 420.

Furthermore, the speaker 100 may further include a first frame 610 and a second frame 620, wherein the first frame 610 is fixed to the second frame 620, for example, fixed to each other by dispensing, and can hold the carrier 200 together. The first frame 610, the second frame 620 and the supporting base 200 may be made of plastic material. Furthermore, the first frame 610 and the second frame 620 may clamp the first diaphragm 510 and the second diaphragm 520, respectively.

Note that the first speaker assembly 110 and the second speaker assembly 120 have the same size, material, and parameters. Specifically, the first magnet 310 and the second magnet 320 are the same component and have the same magnetic permeability, the first coil 410 and the second coil 420 have the same winding number and winding length, and the first diaphragm 510 and the second diaphragm 520 are the same component and are made of the same material.

Therefore, as shown in fig. 3, when the first coil 410 and the second coil 420 receive a current (e.g., an alternating current), the first magnet 310 and the first coil 410 induce to generate a first electromagnetic driving force F1, so that the first coil 410 drives the first diaphragm 510 to displace, and the second magnet 320 and the second coil 420 generate a second electromagnetic driving force F2, so that the second coil 420 drives the second diaphragm 520 to displace, and the displacement of the first diaphragm 510 is the same as but opposite to the displacement of the second diaphragm 520.

For example, the waveform of the current is a sine wave, and when the phase of the current is 0 to 180 degrees, the first diaphragm 510 generates a first displacement DP1 along a first direction D1, and the second diaphragm 520 generates a second displacement DP2 along a second direction D2. On the contrary, when the phase of the current is 180 to 360 degrees, the first diaphragm 510 may generate the first displacement DP1 along the second direction D2, and the second diaphragm 520 may generate the second displacement DP2 along the first direction D1. In this embodiment, the first electromagnetic driving force F1 and the second electromagnetic driving force F2 have the same magnitude, so the first displacement DP1 and the second displacement DP2 have the same magnitude but opposite directions.

In addition, it is noted that the first coil 410 is connected in parallel to the second coil 420, so that the phases of the currents received by the first coil 410 and the second coil 420 at the same time point are the same.

Based on the above design, when the speaker 100 receives the current, since the first electromagnetic driving force F1 and the second electromagnetic driving force F2 for pushing the first diaphragm 510 and the second diaphragm 520 to vibrate are the same in magnitude and opposite in direction, the load-bearing seat 200 is not affected by the electromagnetic driving force. That is, the carrier 200 does not move in the Z-axis when the speaker 100 emits sound.

Next, referring to fig. 4, fig. 4 shows a graph of frequency versus displacement of the speaker 100 and a conventional speaker according to an embodiment of the present disclosure. As shown in fig. 4, a curve CV1 represents a displacement curve in the Z-axis direction when a known speaker emits sounds of different frequencies, and a straight line CV2 represents a displacement in the Z-axis direction when the speaker 100 of the present disclosure emits sounds of different frequencies.

As shown in fig. 4, the displacement of the conventional speaker in the Z-axis direction is greater than 0 at a plurality of frequencies, that is, the conventional speaker generates vibration when emitting sound. Whereas the displacement of the loudspeaker 100 of the present disclosure is 0 at different frequencies. Therefore, the speaker 100 of the present disclosure does not generate unnecessary vibration when emitting sound as in the conventional speaker.

Please refer to fig. 2, fig. 5 and fig. 6. Fig. 5 is a top view of a partial structure of the speaker 100 according to an embodiment of the present disclosure, and fig. 6 is a bottom view of the partial structure of the speaker 100 according to an embodiment of the present disclosure. The susceptor 200 may have a bottom plate 210, a sidewall 220 and a sidewall 230, and the first magnet 310 and the second magnet 320 are fixed on opposite sides of the bottom plate 210.

Further, as shown in fig. 5, when viewed along the first direction D1 (Z axis), the distance DS1 between the sidewall 220 and the first magnet 310 in the Y axis direction is equal to the distance DS2 between the sidewall 230 and the first magnet 310 in the Y axis direction. Similarly, as shown in fig. 6, the distance DS2 between the sidewall 230 and the second magnet 320 in the Y-axis direction is equal to the distance DS1 between the sidewall 220 and the second magnet 320 in the Y-axis direction.

Based on the above-mentioned structural design, the first magnet 310 and the second magnet 320 can have the same magnetic path, and the first speaker unit 110 and the second speaker unit 120 can generate the same electromagnetic driving force.

Referring to fig. 1, 2 and 7, fig. 7 is a front view of a speaker 100 according to an embodiment of the present disclosure. In this embodiment, the susceptor 200 may define a first axial direction AX1 and a second axial direction AX2, the sidewall 220 may have a vent hole 221 formed thereon, the sidewall 230 may have a vent hole 231 formed thereon, and the vent hole 221 and the vent hole 231 are arranged along the second axial direction AX2 and are symmetrical to the first axial direction AX1 and the second axial direction AX2.

In addition, the first frame 610 and the second frame 620 may be formed with a plurality of through holes 630 corresponding to the air holes 221 and 231. For example, the first frame 610 and the second frame 620 together form six through holes 630, which are equally disposed on opposite sides of the speaker 100. Further, as shown in fig. 7, when viewed along the second axial direction AX2 (Y axis), the middle through hole 630 overlaps the ventilation hole 231.

Based on the design that the air holes and the through holes are symmetrical to the first axis AX1, it can be ensured that when the first diaphragm 510 and the second diaphragm 520 vibrate, air can be uniformly discharged out of the speaker 100 through the air holes and the through holes, so that the speaker 100 does not generate vibration in the Z-axis direction.

Furthermore, in this embodiment, as shown in fig. 2 and fig. 3, the carrier 200 may further include two first suspension arms 240 and two second suspension arms 250, the two first suspension arms 240 are connected to the first coil 410 and the first frame 610, and the two second suspension arms 250 are connected to the second coil 420 and the second frame 620. Furthermore, the first coil 410 is electrically connected to the two first cantilevers 240, and the second coil 420 is electrically connected to the two second cantilevers 250.

In this embodiment, the two first cantilevers 240 and the two second cantilevers 250 are symmetrical to the first axial direction AX1, the two first cantilevers 240 are symmetrical to the second axial direction AX2, and the two second cantilevers 250 are symmetrical to the second axial direction AX2. Furthermore, in some embodiments, the first suspension arm 240 and the second suspension arm 250 may be connected to an external housing (not shown), for example, an inner wall of an outer casing of the speaker 100, so that the speaker 100 is suspended in the outer casing.

Referring to fig. 8, fig. 8 is a top view of a first diaphragm 510 according to an embodiment of the disclosure. In this embodiment, the first diaphragm 510 has an inner portion 511 and an outer portion 512. The outer portion 512 surrounds the inner portion 511, and the inner portion 511 has a higher hardness than the outer portion 512. For example, the inner portion 511 may be made of paper, carbon fiber or metal material, and the outer portion 512 may be made of foam or plastic material. The second diaphragm 520 has the same structure and material as the first diaphragm 510, and therefore, the description thereof is omitted.

Next, referring to fig. 9 and 10, fig. 9 and 10 are schematic top views of a first diaphragm according to different embodiments of the disclosure. In the present disclosure, the shape of the first diaphragm 510 (and the second diaphragm 520) is not limited to the rectangular shape of the foregoing embodiment. For example, as shown in fig. 9, the first diaphragm 510A may have an elliptical structure, and as shown in fig. 10, the first diaphragm 510B may have a circular structure. The first diaphragm 510A and the first diaphragm 510B may be used for speaker designs with different shapes, and the structure thereof is similar to that of the first diaphragm 510, and therefore, the description thereof is omitted.

In summary, the present disclosure provides a speaker 100, which includes a carrier 200 and a pair of speaker assemblies (a first speaker assembly 110 and a second speaker assembly 120). The first speaker component 110 and the second speaker component 120 are symmetrical to the carrier 200, and the first speaker component 110 and the second speaker component 120 have the same size, material and parameters.

Therefore, when the speaker 100 receives the current, the first electromagnetic driving force F1 and the second electromagnetic driving force F2 that push the first diaphragm 510 and the second diaphragm 520 to vibrate have the same magnitude and opposite directions, so that the load-bearing seat 200 is not affected by the electromagnetic driving force. That is, the carrier 200 does not move in the Z-axis when the speaker 100 emits sound.

Based on the design of the present disclosure, when the speaker 100 receives the current signal to emit a sound, the speaker 100 does not generate any displacement in the Z-axis direction, and therefore, the speaker 100 is mounted on any electronic device (e.g., a tablet computer or a smart phone) without causing vibration noise to affect the sound effect output by the speaker 100.

Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the disclosure. Moreover, the scope of the present disclosure is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but rather, the process, machine, manufacture, composition of matter, means, methods and steps, presently existing or later to be developed, that will be obvious to one having the benefit of the present disclosure, may be utilized in the practice of the present disclosure. Accordingly, the scope of the present disclosure includes the processes, machines, manufacture, compositions of matter, means, methods, and steps described above. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present disclosure also includes combinations of the various claims and embodiments.

Claims (10)

1. A loudspeaker, comprising:

a bearing seat;

a first speaker assembly, comprising:

a first magnet arranged on the bearing seat;

a first coil corresponding to the first magnet; and

a first diaphragm connected to the first coil; and

a second speaker assembly, comprising:

the second magnet is arranged on the bearing seat;

a second coil corresponding to the second magnet; and

a second diaphragm connected to the second coil;

wherein, the first loudspeaking component and the second loudspeaking component are symmetrical to the bearing seat;

the first coil and the second coil are configured to receive a current, so that the first coil drives the first diaphragm and the second coil drives the second diaphragm to move simultaneously, and the first diaphragm and the second diaphragm have the same displacement but opposite directions.

2. The loudspeaker of claim 1, further comprising a first frame and a second frame, wherein the first frame is fixed to the second frame, and the first frame and the second frame clamp the first diaphragm and the second diaphragm, respectively.

3. The speaker as claimed in claim 2, wherein the carrier defines a first axis and a second axis, the carrier has two sidewalls, two vents are formed on the two sidewalls, and the two vents are arranged along the second axis and are symmetrical to the first axis.

4. The speaker as claimed in claim 3, wherein the first frame and the second frame are formed with two through holes, and the two through holes overlap the two vent holes when viewed along the second axial direction.

5. The speaker of claim 3 wherein the first speaker assembly, the carrier and the second speaker assembly are arranged along a first direction, and when viewed along the first direction, one of the two sidewalls is at a distance from the first magnet equal to the other of the two sidewalls.

6. The speaker as claimed in claim 3, wherein the carrier further comprises two first cantilevers and two second cantilevers, the two first cantilevers and the two second cantilevers are symmetric with respect to the first axis direction, the first coil is electrically connected to the two first cantilevers, and the second coil is electrically connected to the two second cantilevers.

7. The loudspeaker of claim 1, wherein the first diaphragm has an inner portion and an outer portion, the outer portion surrounds the inner portion, and the inner portion has a higher stiffness than the outer portion.

8. The speaker device as in claim 7, wherein the inner side is made of paper, carbon fiber or metal material and the outer side is made of foam or plastic material.

9. The loudspeaker of claim 1, wherein the first coil is connected in parallel with the second coil, the first coil and the second coil have the same number of windings and length of windings, and the first magnet and the second magnet have the same magnetic permeability.

10. The loudspeaker of claim 1, wherein the first loudspeaker component and the second loudspeaker component have the same dimensions, and the first diaphragm is rectangular, circular or elliptical.

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