WO2022059919A1

WO2022059919A1 - Speaker apparatus and sound outputting apparatus comprising same

Info

Publication number: WO2022059919A1
Application number: PCT/KR2021/010557
Authority: WO
Inventors: 윤의한
Original assignee: 삼성전자주식회사
Priority date: 2020-09-21
Filing date: 2021-08-10
Publication date: 2022-03-24
Also published as: KR20220039107A

Abstract

A speaker apparatus is disclosed. The present speaker apparatus comprises: a magnet which generates magnetic flux; a bobbin which is disposed above the magnet and can move in the vertical direction; a voice coil which is wound on the bobbin and generates magnetic force in response to an applied power source; a vibration plate which is disposed on the top of the bobbin and generates vibrations in accordance with the movement of the bobbin; a damper which restricts the movement of the bobbin in directions other than the vertical direction; and a ring member which is inserted in the bobbin and is connected to the damper.

Description

Speaker device and sound output device including same

The present disclosure relates to a speaker device and a sound output device including the same, and more particularly, to a speaker device capable of bringing together contact points of parts constituting a vibrating unit in the speaker device in one place, and variously applying the shape and arrangement of the parts, and the same It relates to a sound output device comprising a.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority on the basis of Korean Patent Application No. 10-2020-0121782 filed on September 21, 2020, and all contents of the application are incorporated herein by reference in their entirety.

A speaker device is an acoustic device that converts the electrical signal output from the audio amplifier into the vibration of the vibrating part and generates a small wave in the air to radiate sound waves. There are kinds of

In general, a speaker device includes a vibrating unit including a magnet for generating magnetic flux, a bobbin around which a voice coil is wound, a diaphragm vibrating according to the motion of the bobbin, and a damper adjusting the vibration direction of the diaphragm.

However, the vibrating unit of a general speaker device has a nonlinear characteristic when the vibrating unit vibrates with vertical amplitude, so that division resonance occurs, and distortion of frequency characteristics occurs due to division resonance.

The present disclosure is to solve the above-described problems, and an object of the present disclosure is to improve the degree of freedom for the shape and arrangement of parts through the structure of a support ring to which various components of a speaker device can be attached, and three points of the components of the vibrating unit An object of the present invention is to provide a speaker device capable of controlling division resonance by improving the rigidity of a bonded structure through matching, and minimizing loss in a specific frequency band compared to power supplied to the speaker device.

In order to achieve the above object, a speaker device according to an embodiment of the present disclosure includes a magnet for generating magnetic flux, a bobbin that is disposed on the magnet, and movable in a vertical direction, a power supply wound around the bobbin, and applied A voice coil generating magnetic force according to , and a ring member connected to the damper.

In this case, the bobbin includes a first bobbin having a first diameter and a second bobbin positioned above the first bobbin and having a second diameter smaller than the first diameter, wherein the voice coil includes the first bobbin can be wrapped in

In this case, the ring member may be inserted between the first bobbin and the second bobbin.

Meanwhile, the ring member may include a first ring connected to the first bobbin, a second ring connected to the second bobbin, and an inner surface of the first ring and the second ring disposed inside the first ring It may include a plurality of ribs connecting the outer surface of the.

In this case, a first groove may be formed in an outer surface of the first ring, and the damper may be connected to the first groove of the first ring.

Meanwhile, the plurality of ribs may extend through the second ring to a central region of the second ring.

Meanwhile, the diaphragm may be coupled to the second bobbin.

Meanwhile, a second groove may be formed in an upper side surface of the ring member, and the diaphragm may be connected to the second groove.

Meanwhile, the speaker device may further include a dust cap that covers an upper region of the bobbin and is connected to the ring member.

In this case, the bobbin may further include a shaft member disposed in a central region, and one region of the dust cap may be coupled to an upper surface of the shaft member.

Meanwhile, the speaker device may further include a reinforcing member supporting the diaphragm, and the reinforcing member may be connected to the ring member.

On the other hand, the sound output device according to an embodiment of the present disclosure includes a main body, a magnet, a bobbin, a voice coil, a diaphragm, and a damper to process an audio signal and a speaker device for outputting sound to send the audio signal to the speaker device and an audio processing unit supplying a power corresponding to , to the voice coil, and the speaker device includes a ring member introduced into the bobbin and connected to the diaphragm and the damper.

1 is a perspective view illustrating a speaker device according to an embodiment of the present disclosure;

2 is an exploded perspective view of a speaker device according to an embodiment of the present disclosure;

3 is a perspective view illustrating a ring member according to an embodiment of the present disclosure.

4 is a perspective view showing a ring member according to another embodiment of the present disclosure.

FIG. 5 is a cross-sectional view taken along line I-I of FIG. 1 .

6 is a cross-sectional view of a speaker device according to another embodiment of the present disclosure.

7 is a view for explaining a loss in a specific frequency band of the speaker device according to the neck size of the diaphragm.

8 is a cross-sectional view of a speaker device including a reinforcing member according to an embodiment of the present disclosure;

9 is a cross-sectional view of a speaker device including a sound absorbing material according to an embodiment of the present disclosure;

It should be understood that the embodiments described below are illustratively shown to help the understanding of the present disclosure, and the present disclosure may be implemented with various modifications, different from the embodiments described herein. However, in the following description of the present disclosure, if it is determined that a detailed description of a related well-known function or component may unnecessarily obscure the gist of the present disclosure, the detailed description and specific illustration thereof will be omitted. In addition, the accompanying drawings are not drawn to scale in order to help understanding of the disclosure, but dimensions of some components may be exaggerated.

The terms used in this specification and claims have been chosen in consideration of the function of the present disclosure. However, these terms may vary depending on the intention of a person skilled in the art, legal or technical interpretation, and emergence of new technology. Also, some terms are arbitrarily selected by the applicant. These terms may be interpreted in the meanings defined herein, and in the absence of specific definitions, they may be interpreted based on the general content of the present specification and common technical common sense in the art.

In the description of the present disclosure, the order of each step should be understood as non-limiting unless the preceding step must be logically and temporally performed before the subsequent step. In other words, except for the above exceptional cases, even if the process described as the subsequent step is performed before the process described as the preceding step, the essence of the disclosure is not affected, and the scope of rights should also be defined regardless of the order of the steps.

In this specification, expressions such as “have,” “may have,” “include,” or “may include” indicate the presence of a corresponding characteristic (eg, a numerical value, function, operation, or component such as a part). and does not exclude the presence of additional features.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

In addition, terms such as 'front', 'rear', 'top', 'bottom', 'side', 'left', 'right', 'top', 'bottom' used in the present disclosure are defined based on the drawings. and the shape and position of each component are not limited by this term.

In addition, since the present specification describes components necessary for the description of each embodiment of the present disclosure, the present disclosure is not necessarily limited thereto. Accordingly, some components may be changed or omitted, and other components may be added. In addition, they may be distributed and arranged in different independent devices.

Further, an embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present disclosure is not limited or limited by the embodiments.

Hereinafter, the present disclosure will be described in detail with reference to FIGS. 1 to 9 .

1 is a perspective view illustrating a speaker device according to an embodiment of the present disclosure, and FIG. 2 is an exploded perspective view of the speaker device according to an embodiment of the present disclosure.

Referring to FIG. 1 , the speaker device 100 according to an embodiment of the present disclosure may include a housing 10 , a magnetic unit 20 forming a magnetic field, and a vibrating unit 30 provided to vibrate by magnetic force. can

The housing 10 forms the exterior of the speaker device 1 , and may be configured to support the vibrating unit 30 disposed inside the housing 10 .

The magnetic unit 20 may be disposed on the lower side of the housing 10 to form a magnetic field inside the speaker device 1 . Referring to FIG. 2 , the magnetic unit 20 may include a magnet 21 , a pole piece 22 , and a plate 23 .

The magnet 21 may include an N pole and an S pole, and may be a magnet magnetized in a direction from the front to the rear. Here, the front means the upper side with reference to FIG. 1 in the direction in which the sound wave output from the speaker device 1 travels, and the rear means the lower side with reference to FIG. 1 in the opposite direction.

For example, the magnet 21 may be a magnet magnetized so that one side facing the front becomes the S pole and the other side facing the rear becomes the N pole.

The magnet 21 may include neodymium, ferrite or other permanent magnet material. Also, the magnet 21 may have a hollow ring shape.

The pole piece 22 has a cylindrical shape and may be disposed in the center of the magnet 21 formed in a hollow ring shape.

The plate 23 may include an upper plate 23 - 1 disposed above the magnet 21 and a lower plate 23 - 2 disposed under the magnet 21 .

The pole piece 22, the upper plate 23-1, and the lower plate 23-2 may be formed of a magnetic material of low magnetoresistance including steel, alloy, or other magnetic material. In this case, the pole piece 22 , the upper plate 23 - 1 and the lower plate 23 - 2 are in contact with the magnet 21 , and may be magnetized by the magnetism of the magnet 21 .

For example, the upper plate 23-1 is connected to the upper side of the magnet 21 having S-pole magnetism and has S-pole magnetism, and the pole piece 22 and the lower plate 23-2 have N-pole magnetism. The branch may be connected to the lower side of the magnet 21 to have N-pole magnetism.

Accordingly, magnetic flux may be formed in the space formed between the pole piece 22 and the upper plate 23 - 1 . In this case, the voice coil 32 is disposed in the space between the pole piece 22 and the upper plate 23-1 where the magnetic flux is formed. As this occurs, the voice coil 32 may move in the vertical direction.

The vibrating unit 30 may include components capable of vibrating under the influence of a magnetic field formed by the magnetic unit 20 . Referring to FIG. 2 , the vibration unit 30 may include a vibration plate 31 , a voice coil 32 , a bobbin 33 , a damper 34 , a dust cap 25 , and a ring member 100 .

The diaphragm 31 may vibrate by the voice coil 32 to generate sound.

For example, the voice coil 32 is wound around the bobbin 33 , and the bobbin 33 on which the voice coil 32 is wound can move in the vertical direction by the movement of the voice coil 32 .

The diaphragm 31 is connected to the bobbin 33, vibrates in the vertical direction by the movement of the voice coil 32, and generates sound waves by compressing or expanding the air in contact with the diaphragm 31, thereby outputting sound. can do.

That is, when an electrical signal is input to the speaker device 1 , power is applied to the voice coil 32 wound around the bobbin 33 , and accordingly, the voice coil 32 located in the magnetic field formed by the magnet 21 is generated. The voice coil 32 moves in the vertical direction by the magnetic force and vibrates the diaphragm 31 to output sound.

The damper 34 guides the voice coil 32 and the motion direction of the bobbin 33 around which the voice coil 32 is wound in the vertical direction, and may restrict movement in directions other than the vertical direction. For example, the damper 34 may limit the left-right movement of the voice coil 32 and the bobbin 33 .

The dust cap 35 is disposed on the upper side of the bobbin 33 to prevent foreign substances from penetrating into the vibrating unit 30 including the bobbin 33 and the voice coil 32 .

Meanwhile, the ring member 100 is inserted into the bobbin 33 , and may be connected to the diaphragm 31 , the damper 34 , and the dust cap 35 . That is, the vibration plate 31 , the bobbin 33 , the damper 34 , and the dust cap 35 constituting the vibration unit 30 may all be directly attached to the ring member 100 .

For example, the bobbin 33 may be inserted into a groove formed in the lower portion of the ring member 100 and coupled thereto, and the diaphragm 31 , the damper 34 , and the dust cap 35 may be directly connected to the ring member 100 . can be attached.

Accordingly, the rigidity of the bonded structure of the components of the vibrating unit 30 can be improved, and the sound output performance of the speaker device 1 can be improved by controlling the division resonance of the vibrating unit 30 including the vibrating plate 31 . can be improved

A detailed description of the structure in which the structure of the ring member 100 and the components of the vibrating unit 30 are joined will be described later.

Meanwhile, the speaker device 1 according to an embodiment of the present disclosure may be a component included in a sound output device, and the sound output device includes a main body, a magnet 21 , a bobbin 33 , a voice coil 32 , It may include a speaker device 1 that outputs sound using the diaphragm 31 and the damper 34 and an audio processor (not shown).

In this case, the audio processing unit may process the audio signal and provide power corresponding to the audio signal to the voice coil 32 . When power corresponding to the audio signal is applied to the voice coil 32 , the diaphragm 31 may output a sound corresponding to the audio signal by vibration of the voice coil 32 .

Referring to FIG. 3 , the ring member 100 according to an embodiment of the present disclosure may include a first ring 110 , a plurality of ribs 130 , and a shaft member 140 .

The shaft member 140 is disposed at the center of the first ring 110 , and may be connected to the first ring 110 through a plurality of ribs 130 . By disposing the plurality of ribs 130 and the shaft member 140 inside the first ring 110 , the overall rigidity of the ring member 100 may be improved.

A vibration plate 31 , a bobbin 33 , a damper 34 , a dust cap 35 , and the like constituting the vibration unit 30 may be attached to the ring member 100 .

For example, the components may be attached to the ring member 100 through an adhesive, or may be bonded through an adhesive after a partial region is introduced into a groove formed in the ring member 100 .

However, the shape of the ring member 100 and the coupling method with the configuration of the vibrating unit 30 are not limited thereto, and the ring member 100 and the configuration of the vibrating unit 30 may be arranged and coupled in various ways.

A detailed description of the connection structure between the ring member 100 and the vibrating unit 30 will be described later with reference to FIGS. 5 to 9 .

Referring to FIG. 4 , the ring member 100 according to another embodiment of the present disclosure may include a first ring 110 , a second ring 120 , a plurality of ribs 130 , and a shaft member 140 . there is.

The second ring 120 may have a smaller diameter than the first ring 110 , and may be disposed inside the first ring 110 . In this case, the first ring 110 and the second ring 120 may be disposed to have the same axis, and the shaft member 140 may be disposed at the center of the first ring 110 and the second ring 120 . can

The plurality of ribs 130 may be formed to extend in a radial direction with respect to the shaft member 140 . For example, one end of each of the plurality of ribs 130 is connected to the inside of the first ring 110 and extends through the second ring 120 to the central region of the second ring 120 , The other end of each of the plurality of ribs 130 may be connected to the shaft member 140 .

A second ring 120, a plurality of ribs 130 and a shaft member 140 are disposed inside the first ring 110, and the first ring 110, the second ring ( 120 ) and the shaft member 140 are connected, so that the overall rigidity of the ring member 100 may be improved.

Meanwhile, the damper 34 may be connected to the outer surface of the first ring 110 (refer to FIG. 5 ). In this case, a first groove may be formed on the outer surface of the first ring 110 , and the damper 34 is connected to the first groove of the first ring 110 to be fixed to the outer surface of the first ring 110 . can

In addition, the diaphragm 31 and the dust cap 35 may be connected to the upper side surface of the ring member 100 . In this case, a second groove may be formed in the upper side surface of the ring member 100 , and the diaphragm 31 and the dust cap 35 may be connected to the second groove and fixed to the upper side surface of the ring member 100 . there is. The second groove may be formed in any one of the upper side surface of the first ring 110 and the upper side surface of the second ring 120 , and may be formed in both the first ring 110 and the second ring 120 . there is.

Hereinafter, a connection structure between the components of the ring member 100 and the vibrating unit 30 will be described with reference to FIGS. 5 to 9 .

FIG. 5 is a cross-sectional view taken along line I-I of FIG. 1 .

Referring to FIG. 5 , the speaker device 1 according to an embodiment of the present disclosure includes a magnet 21 generating magnetic flux, a bobbin 33, a bobbin disposed on the magnet 21 and movable in the vertical direction ( 33), the voice coil 32, which generates magnetic force according to the applied power, is disposed on the upper part of the bobbin 33 and generates vibration according to the movement of the bobbin 33, the diaphragm 31, the bobbin 33 ) may include a damper 34 and a ring member 100 for limiting movement in a direction other than the vertical direction.

In this case, the ring member 100 may be connected to the upper side of the bobbin 33 , and may be connected to the diaphragm 31 , the damper 34 , and the dust cap 35 .

The diaphragm 31 may be attached to the upper side surface of the ring member 100 along the circumferential direction of the ring member 100 , and the damper 34 may be attached to the outer surface of the ring member 100 along the circumferential direction. there is.

The dust cap 35 may be attached to an upper portion of the ring member 100 to cover an upper region of the bobbin 33 . In this case, one area of the dust cap 35 may be coupled to the upper surface of the shaft member 140 disposed in the central area of the ring member 100 .

For example, referring to FIG. 5 , the dust cap 35 may include a region having a greater thickness than an edge region of the dust cap 35 in a central region of the dust cap 35 , and the region may include a ring region. It may be connected to the shaft member 140 (refer to FIG. 3 ) of the member 100 . Accordingly, the rigidity of the structure in which the dust cap 35 is bonded to the ring member 100 may be improved.

6 is a cross-sectional view of a speaker device according to another embodiment of the present disclosure, and FIG. 7 is a diagram for explaining a loss in a specific frequency band of the speaker device according to another embodiment of the present disclosure.

Referring to FIG. 6 , the speaker device 1 includes a first bobbin 33-1 and a second bobbin 33-2, and the ring member 100 includes a first bobbin 33-1 and a second bobbin 33-1. It may be disposed to be inserted between the bobbins 33 - 2 .

The first bobbin 33 - 1 has a first diameter and may be connected to the lower side of the ring member 100 , and the second bobbin 33 - 2 has a second diameter smaller than the first diameter and the ring member 100 . can be connected to the upper side of In this case, the bobbin 33 may have a diameter of 14 mm to 20 mm.

Meanwhile, the ring member 100 may include a first ring 110 and a second ring 120 (refer to FIG. 4 ). In this case, the first bobbin 33 - 1 may be connected to the first ring 110 , and the second bobbin 33 - 2 may be connected to the second ring 120 .

For example, the first bobbin 33 - 1 and the second bobbin 33 - 2 may be formed to have diameters corresponding to the diameters of the first ring 110 and the second ring 120 , respectively. The first bobbin 33-1 is bonded to the lower side of the first ring 110 through an adhesive, or a groove is formed on the lower side of the first ring 110, and one end of the first bobbin 33-1 The first ring 110 may be coupled by being drawn into the groove formed on the lower side.

Similarly, the second bobbin 33-2 is bonded to the upper side of the second ring 120 through an adhesive, or a groove is formed on the upper side of the second ring 120, and the second bobbin 33-2 One end of the second ring 120 may be coupled by being drawn into the groove formed on the upper side.

Referring to FIG. 6 , the voice coil 32 may be wound around the first bobbin 33 - 1 , and the diaphragm 31 may be attached to the second bobbin 33 - 2 .

When power is supplied to the voice coil 32 for sound output of the speaker device, the larger the diameter of the bobbin 33 on which the voice coil 32 is wound, the greater the power can be supplied, so the output performance of the speaker device This can be improved. However, as the diameter of the bobbin 33 to which the diaphragm 31 is connected increases, a loss in a high frequency band output from the diaphragm 31 may occur.

In order to solve this problem, the voice coil 32 is wound, the first bobbin 33-1 having a relatively large diameter and the diaphragm 31 are connected, and the second bobbin having a relatively small diameter is formed as a ring member. By simultaneously connecting to ( 100 ), it is possible to minimize the loss in the high frequency band compared to the power supplied to the speaker device ( 1 ).

Specifically, referring to FIG. 7 , in the case of a conventional speaker device, a loss of sound output in a high frequency band of 2 kHz to 20 kHz occurs ( 710 ), but according to an embodiment of the present disclosure, the first and second bobbins 33 In the case of the speaker device to which -1, 33-2) is applied, it can be seen that the loss of sound output in the same high frequency band is relatively small ( 720 ).

In addition, by changing the size of each of the first and second bobbins 33-1 and 33-2, the curved shape of the diaphragm 31 can be easily designed, so that the frequency characteristic design of the speaker device 1 is improved. freedom can be increased.

Referring to FIG. 8 , the speaker device 1 supports the diaphragm 31 and may include a reinforcing member 36 connected to the ring member 100 .

In this case, since the rigidity of the diaphragm 31 can be reinforced by supporting the diaphragm 31 through the reinforcing member 36 attached to the ring member 100 , the curved shape of the diaphragm 31 can be gently formed. Thereby, by reducing the vertical height of the diaphragm 31 , it is possible to reduce the overall thickness of the speaker device 1 .

In addition, since the reinforcing member 36 is coupled to the diaphragm 31 and the ring member 100 , the rigidity of the bonded structure of the vibrating unit 30 components can be improved to control division resonance.

Referring to FIG. 9 , the speaker device 1 according to an embodiment of the present disclosure may include a sound absorbing material 37 . The sound absorbing material 37 may be formed of, for example, a polyurethane material capable of absorbing sound waves.

In this case, the sound absorbing material 37 may be fixed to the ring member 100 . Accordingly, by absorbing a standing wave that is generated inside the speaker device 1 and emitted forward through the empty space of the bobbin 33 and the dust cap 35, unnecessary sound generated inside the speaker device 1 is removed. It is possible to improve the sound output performance.

In the above, preferred embodiments of the present disclosure have been illustrated and described, but the present disclosure is not limited to the specific embodiments described above, and it is common in the technical field to which the disclosure belongs without departing from the gist of the present disclosure as claimed in the claims. Various modifications may be made by those having the knowledge of

Claims

A speaker device comprising:

a magnet for generating magnetic flux;

a bobbin disposed on the magnet and movable in the vertical direction;

a voice coil wound around the bobbin and generating a magnetic force according to applied power;

a diaphragm disposed on the bobbin to generate vibration according to the movement of the bobbin;

a damper for restricting movement of the bobbin in a direction other than the vertical direction; and

and a ring member inserted into the bobbin and connected to the damper.
According to claim 1,

The bobbin is

a first bobbin having a first diameter; and

a second bobbin positioned above the first bobbin and having a second diameter smaller than the first diameter; and

The voice coil is wound around the first bobbin.
3. The method of claim 2,

The ring member is

A speaker device inserted between the first bobbin and the second bobbin.
3. The method of claim 2,

The ring member is

a first ring connected to the first bobbin;

a second ring disposed inside the first ring and connected to the second bobbin; and

and a plurality of ribs connecting the inner surface of the first ring and the outer surface of the second ring.
5. The method of claim 4,

A first groove is formed on the outer surface of the first ring,

The damper is

A speaker device connected to the first groove of the first ring.
5. The method of claim 4,

The plurality of ribs,

A speaker device formed to extend through the second ring to a central region of the second ring.
3. The method of claim 2,

The diaphragm is a speaker device coupled to the second bobbin.
The method of claim 1,

A second groove is formed in the upper side surface of the ring member,

The diaphragm is

A speaker device connected to the second groove.
The method of claim 1,

and a dust cap covering an upper region of the bobbin and connected to the ring member.
10. The method of claim 9,

The bobbin is

A shaft member disposed in the central region; further comprising,

The dust cap is

A speaker device in which a region is coupled to an upper surface of the shaft member.
The method of claim 1,

Further comprising; a reinforcing member supporting the diaphragm;

The reinforcing member is

A speaker device connected to the ring member.
A sound output device comprising:

main body;

a speaker device for outputting sound using a magnet, a bobbin, a voice coil, a diaphragm, and a damper; and

An audio processing unit for processing an audio signal and providing power corresponding to the audio signal to the voice coil to the speaker device;

The speaker device,

and a ring member introduced into the bobbin and connected to the diaphragm and the damper.