CN116367055A - Loudspeaker - Google Patents

Abstract

The invention belongs to the technical field of speakers and discloses a speaker, which comprises a shell, a vibrating structure, a magnetic circuit structure and voice coils, wherein the vibrating structure and the magnetic circuit structure are respectively connected to the shell, the voice coils comprise a main voice coil and a plurality of auxiliary voice coils, the main voice coil is connected to the vibrating structure and can move along a first direction relative to the magnetic circuit structure, the plurality of auxiliary voice coils are respectively connected to the shell, the auxiliary voice coils are uniformly distributed around the main voice coil in a plane perpendicular to the first direction, and the directions of forces applied to the magnetic circuit structure when the main voice coil and the auxiliary voice coils are electrified and work are opposite. In the invention, unlike the existing nested arrangement, the auxiliary voice coil is independently arranged at the outer side of the main voice coil as a vibration reduction structure, thereby avoiding influencing the sounding work of the main voice coil.

Description

Loudspeaker

Technical Field

The invention relates to the technical field of speakers, in particular to a speaker.

Background

The inside space of vibrating structure on the speaker is as back chamber, be provided with voice coil loudspeaker voice coil, the pole piece, magnet and yoke in the back chamber, wherein, voice coil loudspeaker voice coil is connected in vibrating structure, the pole piece, magnet and yoke constitute magnetic circuit structure, connect in supporting vibrating structure's shell, when the intercommunication alternating current, the voice coil loudspeaker voice coil can drive vibrating structure vibration sound production under the ampere effect, at this moment, magnetic circuit structure that pole piece, magnet and yoke constitute can receive a reverse effort, its size equals with the ampere force that the voice coil loudspeaker voice coil received, the opposite direction, this reverse effort can finally be conducted to on the shell of speaker, lead to the shell to produce unnecessary vibration, lead to the impaired of tone quality, influence consumer's use impression.

Disclosure of Invention

The invention aims to provide a loudspeaker, which can reduce the impact force of a magnetic circuit structure on a shell during sounding operation.

To achieve the purpose, the invention adopts the following technical scheme:

a speaker, comprising:

a housing;

a vibrating structure connected to the housing;

a magnetic circuit structure connected to the housing;

the voice coil loudspeaker voice coil, including a main voice coil loudspeaker voice coil and a plurality of vice voice coil loudspeaker voice coil, the main voice coil loudspeaker voice coil connect in vibrating structure can for magnetic circuit structure moves along first direction, a plurality of vice voice coil loudspeaker voice coil connect respectively in the shell, in perpendicular to in the plane of first direction encircle main voice coil loudspeaker voice coil equipartition sets up, main voice coil loudspeaker voice coil with vice voice coil loudspeaker voice coil when circular telegram work is right the direction of the effort that magnetic circuit structure applyed is opposite.

Preferably, two auxiliary voice coils are arranged at intervals in a second direction, the main voice coil is located between the two auxiliary voice coils, and the second direction is perpendicular to the first direction.

Preferably, two ends of the magnetic circuit structure in the third direction are respectively connected to the shell, the third direction is respectively perpendicular to the first direction and the second direction, cantilevers are respectively arranged at two ends of the magnetic circuit structure in the third direction, the magnetic circuit structure is connected to the shell through the cantilevers, and the magnetic circuit structure is suspended and erected in the shell.

Preferably, the magnetic circuit structure includes:

a yoke coupled to the housing;

the main magnetic pole structure is arranged on the yoke iron, and the main voice coil is arranged on the periphery of the main magnetic pole structure in a surrounding mode;

and the auxiliary magnetic pole structures are arranged on the yoke and are positioned outside the main voice coils, and each auxiliary voice coil is correspondingly provided with one auxiliary magnetic pole structure in the first direction.

Preferably, the main pole structure includes:

a main magnet disposed on a side of the yoke facing the vibration structure;

and the main magnetic pole piece is arranged on one side of the main magnet facing the vibration structure.

Preferably, the auxiliary magnetic pole structure includes:

a first auxiliary magnet provided at a side of the yoke facing the vibration structure;

the first auxiliary magnetic pole piece is arranged on one side of the first auxiliary magnet, which faces the vibration structure.

Preferably, the magnetic pole direction of the magnetic pole structure formed by the first auxiliary magnet and the first auxiliary magnetic pole piece is opposite to the magnetic pole direction of the main magnetic pole structure.

Preferably, the auxiliary magnetic pole structure further includes:

the second auxiliary magnet is arranged on one side of the yoke iron, which faces the vibration structure, and is positioned on one side of the first auxiliary magnet, which faces away from the main magnetic pole structure;

the second auxiliary magnetic pole piece is arranged on one side of the yoke iron, which faces the vibration structure, and is positioned between the first auxiliary magnet and the second auxiliary magnet.

Preferably, the magnetic pole direction of the magnetic pole structure formed by the second auxiliary magnet and the second auxiliary magnetic pole piece is opposite to the magnetic pole direction of the main magnetic pole structure.

Preferably, the sub voice coil is provided on the outer periphery of the second sub pole piece.

The invention has the beneficial effects that:

different with current nested setting, vice voice coil loudspeaker voice coil is as vibration damping structure independent setting in the outside of main voice coil loudspeaker voice coil, connect in the shell, avoided producing the influence to the sound production work of main voice coil loudspeaker voice coil, can balance the effort of main voice coil loudspeaker voice coil to magnetic circuit structure, reduce the atress of shell for the speaker has reached the effect of damping, on this basis, a plurality of vice voice coils encircle main voice coil loudspeaker voice coil equipartition setting, guaranteed the atress balance at during operation magnetic circuit structure, thereby avoided the deflection of magnetic circuit structure to skew influence to speaker tone quality.

Drawings

Fig. 1 is a schematic structural diagram of a speaker according to an embodiment of the present invention;

fig. 2 is a schematic view of a speaker according to an embodiment of the present invention, in which a housing and a vibration structure are omitted;

fig. 3 is a cross-sectional view of a speaker according to an embodiment of the present invention;

FIG. 4 is a graph showing a local induction line distribution of a magnetic circuit structure according to an embodiment of the present invention;

fig. 5 is a schematic view of a speaker according to an embodiment of the present invention, in which a housing, a vibration structure, and a voice coil are omitted;

fig. 6 is a schematic diagram of a speaker according to an embodiment of the present invention, in which a housing, a vibrating structure, a voice coil, and a sub-pole structure are omitted.

In the figure:

1. a housing;

2. a vibrating structure;

3. a magnetic circuit structure; 31. a yoke; 32. a main pole structure; 321. a main magnet; 322. a main pole piece; 33. a secondary magnetic pole structure; 331. a first sub-magnet; 332. a first sub-pole piece; 333. a second auxiliary magnet; 334. a second pair of pole pieces;

4. a voice coil; 41. a main voice coil; 41a, a first main sound part; 42. a sub-voice coil; 42a, a first sub-sound part; 42b, a second secondary sound portion.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 6, the present invention provides a speaker including a housing 1, a vibrating structure 2, a magnetic circuit structure 3, and a voice coil 4. Wherein, vibrating structure 2 and magnetic circuit structure 3 connect respectively in shell 1, and voice coil 4 includes a main voice coil 41 and a plurality of vice voice coil 42, and main voice coil 41 connects in vibrating structure 2, can follow the first direction for magnetic circuit structure 3 and remove, and a plurality of vice voice coils 42 connect respectively in shell 1, surround main voice coil 41 equipartition setting in the plane perpendicular to first direction, and the direction of the effort that main voice coil 41 and vice voice coil 42 exert on magnetic circuit structure 3 when the circular telegram work is opposite.

In the invention, unlike the existing nested arrangement, the auxiliary voice coils 42 are independently arranged on the outer side of the main voice coil 41 as a vibration reduction structure and are connected with the shell 1, so that the influence on the sounding work of the main voice coil 41 is avoided, the acting force of the main voice coil 41 on the magnetic circuit structure 3 can be balanced, the stress of the shell 1 is reduced, the loudspeaker achieves the vibration reduction effect, and on the basis, the plurality of auxiliary voice coils 42 are uniformly distributed around the main voice coil 41, the stress balance of the magnetic circuit structure 3 during working is ensured, and the influence on the sound quality of the loudspeaker caused by deflection of the magnetic circuit structure 3 is avoided.

In the present embodiment, the vibration structure 2 includes a middle flitch and a vibration plate, the vibration plate is of a ring-shaped structure, an outer peripheral side of the vibration plate is connected to the housing 1, an inner peripheral side is connected to the middle flitch, and the main voice coil 41 is connected to the vibration plate.

Specifically, the sub-coils 42 are provided in two, the two sub-coils 42 are disposed at intervals in the second direction, and the main coil 41 is located between the two sub-coils 42, the second direction being perpendicular to the first direction. The arrangement saves the use materials of the coil, occupies smaller space, and can realize the stress balance of the magnetic circuit structure 3 with a simpler structure.

More specifically, both ends of the magnetic circuit structure 3 in the third direction are respectively connected to the housing 1, and the third direction is respectively perpendicular to the first direction and the second direction. The connection direction of the magnetic circuit structure 3 and the shell 1 is perpendicular to the arrangement direction of the two auxiliary voice coils 42, so that the connection stability of the magnetic circuit structure 3 is ensured, and the efficient and reliable vibration reduction is realized on the basis of reducing the contact area between the magnetic circuit structure 3 and the shell 1.

In this embodiment, the magnetic circuit 3 is provided with the cantilever respectively at the both ends of third orientation, and magnetic circuit 3 is connected in shell 1 only through the cantilever, and the unsettled erects in shell 1 to improved the mobility of magnetic circuit 3, reduced the area of contact of magnetic circuit 3 and shell 1, and then reduced the vibration that magnetic circuit 3 transmitted shell 1, at this moment magnetic circuit 3 and speaker exist resonant frequency, adjust the resonant frequency of magnetic circuit 3, make it slightly less than or equal to the resonant frequency of speaker, also can reduce the atress of speaker shell 1, reduce the vibration of speaker shell 1.

The magnetic circuit structure 3 will be specifically described below.

Specifically, the magnetic circuit structure 3 includes a yoke 31, a main pole structure 32, and a sub pole structure 33. Wherein, the yoke 31 is connected to the casing 1, the main magnetic pole structure 32 is arranged on the yoke 31, the main voice coil 41 is arranged around the outer periphery of the main magnetic pole structure 32, the auxiliary magnetic pole structure 33 is arranged on the yoke 31 and positioned outside the main voice coil 41, each auxiliary voice coil 42 is correspondingly provided with one auxiliary magnetic pole structure 33 in the first direction, and the auxiliary voice coil 42 generates interaction force with the auxiliary magnetic pole structure 33 when in power-on operation. The main magnetic pole structure 32 and the auxiliary magnetic pole structure 33 of the magnetic circuit structure 3 are respectively arranged for the main voice coil 41 and the auxiliary voice coil 42, so that the magnetic circuit structure is more targeted, the vibration reduction effect is better, and the space utilization rate of the surface of the yoke 31 is improved.

More specifically, to the structure of yoke 31, the speaker still includes flaky enclosing cover, and the enclosing cover is connected with shell 1 through the sticky mode, carries out fretwork processing and forms yoke 31 and cantilever on the enclosing cover, and yoke 31 and cantilever integrated into one piece are on the enclosing cover promptly, and the cantilever at yoke 31 only in the third direction both ends is connected with the enclosing cover to make the unsettled frame of magnetic circuit structure 3 in shell 1.

Specifically, the main pole structure 32 includes a main magnet 321 and a main pole piece 322. The main magnet 321 is disposed on a side of the yoke 31 facing the vibrating structure 2, the main pole piece 322 is disposed on a side of the main magnet 321 facing the vibrating structure 2, and the main voice coil 41 is disposed around the outer circumferences of the main magnet 321 and the main pole piece 322.

More specifically, the auxiliary pole structure 33 includes a first auxiliary magnet 331 and a first auxiliary pole piece 332. The first auxiliary magnet 331 is disposed on a side of the yoke 31 facing the vibrating structure 2, and the first auxiliary pole piece 332 is disposed on a side of the first auxiliary magnet 331 facing the vibrating structure 2.

In the present embodiment, the magnetic pole direction of the magnetic pole structure constituted by the first sub-magnet 331 and the first sub-pole piece 332 is opposite to the magnetic pole direction of the main magnetic pole structure 32. In addition to the above arrangement, the magnetic pole direction of the magnetic pole structure formed by the first auxiliary magnet 331 and the first auxiliary magnetic pole piece 332 can be adjusted according to the actual design of the speaker and the vibration reduction requirement of the magnetic circuit structure 3, so long as the direction of the acting force applied to the magnetic circuit structure 3 when the main voice coil 41 and the auxiliary voice coil 42 are electrified and operated is opposite.

Specifically, the auxiliary pole structure 33 further includes a second auxiliary magnet 333 and a second auxiliary pole piece 334. Wherein, the second auxiliary magnet 333 is disposed on one side of the yoke 31 facing the vibration structure 2, and is located on one side of the first auxiliary magnet 331 facing away from the main magnetic pole structure 32, the second auxiliary magnetic pole piece 334 is disposed on one side of the yoke 31 facing the vibration structure 2, and is located between the first auxiliary magnet 331 and the second auxiliary magnet 333, and the two sets of auxiliary magnets can increase the magnetic flux of the auxiliary voice coil 42 and adjust the magnetic induction line direction passing through the main voice coil 41 and the auxiliary voice coil 42 according to the requirement.

More specifically, the sub-voice coil 42 is looped around the outer periphery of the second sub-pole piece 334, so that the corresponding mating effect of the sub-voice coil 42 and the sub-pole structure 33 is stronger.

More specifically, the magnetic pole direction of the magnetic pole structure constituted by the second sub-magnet 333 and the second sub-magnetic pole piece 334 is opposite to the magnetic pole direction of the main magnetic pole structure 32. In addition to the above arrangement, the magnetic pole direction of the magnetic pole structure formed by the second auxiliary magnet 333 and the second auxiliary magnetic pole piece 334 can be adjusted according to the actual design of the speaker and the vibration reduction requirement of the magnetic circuit structure 3, so long as the direction of the acting force applied to the magnetic circuit structure 3 when the main voice coil 41 and the auxiliary voice coil 42 are electrified and operated is opposite.

In this embodiment, as shown by the N-pole and S-pole labels in fig. 3 and 4, the N-pole of the main magnetic pole structure 32 formed by the main magnet 321 and the main pole piece 322 is upward, the S-pole is downward, i.e., the N-pole of the main magnet 321 is upward, the S-pole of the magnetic pole structure formed by the first sub-magnet 331 and the first sub-pole piece 332 is downward, the N-pole is downward, i.e., the S-pole of the first sub-magnet 331 is upward, the N-pole is downward, the S-pole of the magnetic pole structure formed by the second sub-magnet 333 and the second sub-pole piece 334 is upward, the N-pole is downward, i.e., the S-pole of the second sub-magnet 333 is upward, and the N-pole is downward.

Specifically, the energizing directions of the main voice coil 41 and the sub voice coil 42 are opposite. As shown in fig. 4, when the main voice coil 41 and the sub voice coil 42 are energized in opposite directions as viewed in the cross-sectional direction, the current directions in the first main voice portion 41a and the first sub voice portion 42a are the same, and the current directions in the first sub voice portion 42a and the second sub voice portion 42b are opposite. As can be seen from the direction of the magnetic induction lines indicated in fig. 4, the directions of the magnetic induction lines passing through the first main sound portion 41a and the first sub-sound portion 42a are opposite, and the directions of the magnetic induction lines passing through the first sub-sound portion 42a and the second sub-sound portion 42b are opposite. Thus, when the power is applied, the first main sound portion 41a and the first sub sound portion 42a are forced in opposite directions, and the first sub sound portion 42a and the second sub sound portion 42b are forced in the same direction.

When the loudspeaker works, alternating current is supplied to the main voice coil 41 and alternating current with the opposite direction is supplied to the auxiliary voice coil 42, at the moment, ampere force born by the main voice coil 41 is opposite to ampere force born by the auxiliary voice coil 42, the resultant force born by the main voice coil 41 and the auxiliary voice coil 42 is equal to the force born by the magnetic circuit structure 3, the force born by the magnetic circuit structure 3 is opposite to the resultant force born by the main voice coil 41 and the auxiliary voice coil 42, and when the resultant force born by the main voice coil 41 and the auxiliary voice coil 42 is reduced, the force born by the magnetic circuit structure 3 is reduced, and further the acting force transmitted to the shell by the magnetic circuit structure 3 is reduced, so that the vibration reduction effect of the shell 1 is achieved.

In the design of the invention, in the resonance frequency band, an alternating voltage with the magnitude of 1V opposite to the energizing direction of the main voice coil 41 is connected to the two auxiliary voice coils 42, and the stress of the shell 1 of the loudspeaker is greatly reduced in the resonance frequency band. In addition, the energizing frequency bands of the two sub voice coils 42 and the energizing power are adjustable, so that the voltage can be continuously increased theoretically to reduce the stress of the loudspeaker housing 1, and the full-band vibration reduction effect is achieved. It should be noted that the energizing voltage is only within the rated power range of the voice coil 4, that is, the voltage cannot be excessively large, and the voice coil 4 is burned.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. A loudspeaker, comprising:

a housing (1);

a vibrating structure (2) connected to the housing (1);

a magnetic circuit structure (3) connected to the housing (1);

voice coil (4), including a main voice coil (41) and a plurality of vice voice coil (42), main voice coil (41) connect in vibrating structure (2), can for magnetic circuit structure (3) are along first direction removal, a plurality of vice voice coil (42) connect respectively in shell (1), in the perpendicular to in the plane of first direction encircle main voice coil (41) equipartition sets up, main voice coil (41) with the direction of the effort that vice voice coil (42) circular telegram during operation was right magnetic circuit structure (3) applyed is opposite.

2. Loudspeaker according to claim 1, wherein the secondary voice coils (42) are arranged two by two, the two secondary voice coils (42) being arranged at intervals in a second direction, the primary voice coil (41) being located between the two secondary voice coils (42), the second direction being perpendicular to the first direction.

3. Loudspeaker according to claim 2, characterized in that the two ends of the magnetic circuit structure (3) in the third direction are respectively connected to the housing (1), the third direction is respectively perpendicular to the first direction and the second direction, the two ends of the magnetic circuit structure (3) in the third direction are respectively provided with a cantilever, the magnetic circuit structure (3) is connected to the housing (1) through the cantilever, and is suspended in the housing (1).

4. The loudspeaker according to claim 1, wherein the magnetic structure (3) comprises:

a yoke (31) connected to the housing (1);

a main magnetic pole structure (32) provided on the yoke (31), the main voice coil (41) being provided around the outer periphery of the main magnetic pole structure (32);

and sub-magnetic pole structures (33) provided on the yoke (31) and located outside the main voice coil (41), wherein each sub-voice coil (42) is provided with one sub-magnetic pole structure (33) corresponding to the first direction.

5. The loudspeaker of claim 4, wherein the main pole structure (32) comprises:

a main magnet (321) provided on a side of the yoke (31) facing the vibrating structure (2);

and a main pole piece (322) arranged on one side of the main magnet (321) facing the vibration structure (2).

6. The loudspeaker according to claim 4, wherein the secondary pole structure (33) comprises:

a first sub-magnet (331) provided on a side of the yoke (31) facing the vibrating structure (2);

the first auxiliary magnetic pole piece (332) is arranged on one side of the first auxiliary magnet (331) facing the vibration structure (2).

7. The loudspeaker of claim 6, wherein the pole structure of the first secondary magnet (331) and the first secondary pole piece (332) has a pole direction opposite to that of the primary pole structure (32).

8. The loudspeaker according to claim 6, wherein the secondary pole structure (33) further comprises:

a second auxiliary magnet (333) arranged on one side of the yoke (31) facing the vibrating structure (2) and on one side of the first auxiliary magnet (331) facing away from the main magnetic pole structure (32);

and a second sub-magnet piece (334) provided on a side of the yoke (31) facing the vibrating structure (2) and located between the first sub-magnet (331) and the second sub-magnet (333).

9. The speaker of claim 8, wherein a pole direction of a pole structure formed by the second sub-magnet (333) and the second sub-pole piece (334) is opposite to a pole direction of the main pole structure (32).

10. The loudspeaker of claim 8, wherein the secondary voice coil (42) is looped around the outer periphery of the second secondary pole piece (334).

Images