KR101192397B1 - Multi-function micro-speaker - Google Patents

Multi-function micro-speaker Download PDF

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Publication number
KR101192397B1
KR101192397B1 KR20100000899A KR20100000899A KR101192397B1 KR 101192397 B1 KR101192397 B1 KR 101192397B1 KR 20100000899 A KR20100000899 A KR 20100000899A KR 20100000899 A KR20100000899 A KR 20100000899A KR 101192397 B1 KR101192397 B1 KR 101192397B1
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KR
South Korea
Prior art keywords
suspension
frame
fixed
outer cover
diaphragm
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KR20100000899A
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Korean (ko)
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KR20110080588A (en
Inventor
이상호
이한량
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주식회사 비에스이
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Application filed by 주식회사 비에스이 filed Critical 주식회사 비에스이
Priority to KR20100000899A priority Critical patent/KR101192397B1/en
Priority to PCT/KR2011/000047 priority patent/WO2011083960A2/en
Priority to CN2011800001210A priority patent/CN102273230A/en
Priority to TW100100577A priority patent/TWI491274B/en
Publication of KR20110080588A publication Critical patent/KR20110080588A/en
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Publication of KR101192397B1 publication Critical patent/KR101192397B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/07—Suspension between moving magnetic core and housing

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The present invention relates to a multifunctional micro speaker. Multifunctional micro speaker of the present invention, the frame; A diaphragm having its outer circumference fixed to the frame; A voice coil fixed to the lower surface of the diaphragm; A first suspension having an outer circumference coupled to the frame and having elasticity; A yoke fixed to the first suspension; A first permanent magnet fixed to the bottom surface of the yoke; A plate fixed to an upper surface of the first permanent magnet; And an outer cover having a bottom portion and a side wall portion to accommodate the frame and the first suspension.

Figure R1020100000899

Description

Multi-function micro speaker {Multi-function micro-speaker}

The present invention relates to a multi-function micro speaker, and more particularly, in the manufacturing process of the multi-function micro speaker, various components are sequentially stacked in the outer cover, and after the stacking of the components, the upper end of the outer cover is assembled to assemble the assembly process. The present invention relates to a multifunctional micro speaker, which can be simplified and improves productivity, and has an improved structure to protect components from external shocks to improve durability.

Generally, a speaker is a device that converts an electrical signal into a voice signal. Micro-speakers are mainly small speakers for small sized audio equipment such as mobile phones, laptops, MP3 players, earphones, etc., and portable audio equipment that is in great demand in recent years.

However, recent electronic products employing micro-speakers, particularly mobile communication terminals such as mobile phones, have a configuration for generating vibration signals. The vibration signal is used as a signal in place of an incoming call signal or as a signal for confirming an input state in a touch screen method of directly inputting information on a screen.

The micro speaker, which is the object of the present invention, refers to a speaker having not only a basic function of generating sound but also a configuration for generating a vibration signal. The micro speaker is variously called a multifunctional actuator or a multifunctional electro-acoustic transducer.

The conventional micro speaker has a structure in which vibration is obtained by resonating a vibrating body supported by a plate spring. Such a conventional micro speaker has a voice coil in a magnetic circuit on the side of a diaphragm, also called a vibration plate, and when a current for a voice signal is applied thereto, a sound is output. Generate.

1 shows an example of a conventional micro speaker. Referring to this, the micro speaker 100 includes a frame 110, a vibration generating plate 101, a voice coil 102, a permanent magnet 104 having an N pole and an S pole disposed in an up and down direction, and a plate 103. ), Yoke 105, suspension 106, and top cover 107.

The upper end of the voice coil 102 is fixed to the lower surface of the diaphragm 101. The voice coil 102 is wound in the vertical direction. The plate 103 is fixed to the upper surface of the permanent magnet 104, the permanent magnet 104 is fixed to the bottom surface of the yoke 105, the yoke 105 is fixed to the suspension 106. Suspension 106 is elastically supported on the frame 110. The yoke 105, the permanent magnet 104, and the plate 103 form a magnetic circuit of the speaker.

The operation of the micro speaker 100 having such a configuration will be described.

When a current suitable for sound is applied to the voice coil 102, an electromagnetic force is generated in the voice coil 102, which causes the diaphragm 101 to vibrate and generate an acoustic output.

In other words, the magnetic force lines emerging from the N pole of the permanent magnet 104 form a magnetic field passing through the plate 103, the voice coil 102, and the yoke 105 in turn to the S pole of the permanent magnet 104. At this time, when the electromagnetic force is generated in the voice coil 102, it interacts with the magnetic flux by the magnetic circuit, and the diaphragm 101 fixed to the voice coil 102 is vibrated to function as a speaker for outputting sound.

On the other hand, when a current suitable for vibration (usually low frequency current) is applied to the voice coil 102, the vertical motion of the magnetic circuit portion (vibrating body) composed of the yoke 105, the permanent magnet 104, and the plate 103 is applied. The vibration signal is generated.

Referring to the assembly process of the micro speaker 100 by such a configuration as follows.

First, the frame 110 is composed of an upper side wall frame 112 and a lower side wall frame 113 forming a side wall, and a bottom frame 111 forming a bottom surface. The bottom frame 111 is bonded to the lower side wall frame 113, and the outer peripheral portion of the suspension 106 is fixed to the lower side wall frame 113. The upper side wall frame 112 is fixed to the upper side of the lower side wall frame 113. Next, the yoke 105, the permanent magnet 104, and the plate 103 are bonded to the suspension 106 in this order and stacked. Subsequently, the diaphragm 101 is bonded to the upper edge of the upper side wall frame 112, and the upper cover 107 is bonded to the upper part of the diaphragm 101. In general, the coupling between components is assembled using a bond or welding between components of a metallic material.

As such, the conventional micro speaker 100 is inconvenient to go through a number of processes for the combination of each component. In addition, the assembly process is difficult, there is a problem that a considerable time is required for assembly, thereby reducing the productivity.

In particular, the method of assembling the component is applied to the bond between the components, and the method of hardening it is generally applied, it is difficult to adjust the quantitative and in-situ position of the liquid bond, so that product-specific variation occurs. In addition, in order to solve this problem, it causes a problem of increasing the investment in assembly equipment.

The present invention is to solve the above problems, by stacking the components of the multi-function micro speaker in the outer cover, and assembled by curling the upper end of the outer cover inward, thereby simplifying the assembly process and protect the components from external shock It is an object of the present invention to provide a multi-functional micro speaker to improve the durability.

In order to achieve the above object, the multifunctional micro speaker of the present invention includes a frame; A diaphragm having an outer circumferential portion fixed to the frame; A voice coil fixed to the lower surface of the diaphragm; A first suspension having an outer circumference coupled to the frame and having elasticity; A yoke fixed to the first suspension; A first permanent magnet fixed to the bottom surface of the yoke; A plate fixed to an upper surface of the first permanent magnet; And an outer cover having a bottom portion and a side wall portion to receive the frame and the first suspension.

In addition, the outer cover is preferably provided with a curling portion of the upper end is curled to the inside.

In addition, it is preferable that a plurality of air holes are formed at the bottom of the outer cover.

In addition, the sidewall portion of the outer cover, it is preferable that the opening groove is formed so that the frame is protruding.

In addition, the insertion groove is preferably formed along the circumferential direction of the lower surface of the frame.

In addition, along the edge circumferential direction of the first suspension, it is preferable that the engaging projection is inserted into the insertion groove is formed.

In addition, the first suspension is preferably disposed at equal intervals along the circumferential direction, and a first support portion for supporting the first suspension is formed between the frame and the first spacer.

In addition, it is preferable to have an upper cover coupled to the outer circumference of the upper surface of the diaphragm.

In addition, it is preferable to have a first spacer coupled to the lower surface of the first suspension.

The display device may further include a second suspension having an outer circumference coupled to a lower surface of the first spacer, a second magnet coupled to the second suspension, and a second spacer having an outer circumference coupled to a lower surface of the second suspension. Preferably, the second suspension, the second magnet, and the second spacer are accommodated in the outer cover, and the bottom surface of the second spacer is coupled to the bottom of the outer cover.

In addition, it is preferable that the first spacer is formed in a ring shape, and the cross section of the first spacer is a quadrangular shape having a rounded portion with rounded corners.

In addition, the second suspension is preferably provided with a second support having a bent portion arranged at equal intervals along the circumferential direction and bent upwards so that the outer end portion is fitted into the round portion.

In addition, the bottom portion of the outer cover is preferably formed with a second boss protruding upward from the center, the second magnet is formed with a second boss inserting portion into which the second boss is inserted.

According to the multi-function micro-speaker according to the present invention, in order that the components constituting the multi-function micro-speaker is accommodated in the outer cover, the components are stacked in order from the bottom of the outer cover, and assembled by curling the upper end of the outer cover inward. By assembling, the manufacturing process is simplified to provide the effect of improving productivity.

In addition, in the process of assembling the components it is possible to minimize the process of the conventional coating process to reduce the process cost, to minimize the characteristic deviation of each product, to provide an eco-friendly multi-function micro speaker.

In addition, since the various components of the multi-function micro speaker are kept in the outer cover, it is resistant to external shock and provides an effect of improving durability.

1 is a schematic cross-sectional view of a conventional multifunctional micro speaker,
2 is an exploded perspective view of a multifunctional micro speaker according to an embodiment of the present invention;
3 is a cross-sectional view of a multifunctional micro speaker according to an embodiment of the present invention;
4 is an enlarged view of a portion “A” of FIG. 2;
5 is an enlarged view of a portion “B” of FIG. 2;
FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 2.

The micro speaker 1 of the present embodiment is mainly used in a mobile communication terminal such as a cellular phone or a small device such as a PMP, and has a sound generating function and a vibration generating function as a signal at the same time. It is about one micro speaker to improve.

A multifunctional micro speaker according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 7.

2 is an exploded perspective view of a multi-function micro speaker according to an embodiment of the present invention, Figure 3 is a cross-sectional view of the multi-function micro speaker according to an embodiment of the present invention. 4 is an enlarged view of portion “A” of FIG. 2, FIG. 5 is an enlarged view of portion “B” of FIG. 2, and FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 2.

2 and 3, the multifunction micro speaker 1 according to the embodiment of the present invention includes a frame 10, a diaphragm 20 having an outer circumferential portion fixed to the frame 10, and the diaphragm 20. Voice coil 30 fixed to the lower surface of the), the outer peripheral portion is coupled to the frame 10, the elastic first suspension 40, and the yoke (yoke) fixed to the first suspension (40); 50, a first permanent magnet 60 fixed to the bottom surface 52 of the yoke 50, a plate 70 fixed to the top surface of the first permanent magnet 60, and a bottom part. And an outer cover 90 for accommodating the frame 10 and the first suspension 40.

The present invention is characterized by assembling the components of the multi-function micro speaker 1 while being stacked in the outer cover 90.

2 shows an exploded perspective view of the multifunctional micro speaker 1 according to the present invention. As shown in FIG. 2, various components of the micro speaker 1 are accommodated in the outer cover 90. As shown in FIG. 3 is a cross-sectional view of a state in which the upper end of the outer cover 90 is curled after the components of the multifunction micro speaker 1 according to the present invention are stacked and accommodated in the outer cover 90.

In detail, the outer cover 90 includes a bottom portion 92 and a sidewall portion 94, and includes the frame 10 and the first portion in a space formed of the bottom portion 92 and the sidewall portion 94. One suspension 40 is housed. The outer cover 90 has a curling part 91 whose upper end is bent inwardly and curled. The outer cover 90 is preferably made of a metal material, such as stainless steel, brass. The curling part 91 of the outer cover 90 is performed by press working, or by pressing the upper end of the outer cover 90 inward by a separate pressing means while rotating the outer cover 90 in one direction, curling. It can be implemented in a variety of ways, such as.

The bottom portion 92 of the outer cover 90 is formed with an air hole 96 for venting the air generated by the vibration of the first suspension 40 to the outside. Since the air flow is generated inside the outer cover 90 when the first suspension 40 is vibrated, unless the air is vented, the first suspension 40 affects the vibration of the first suspension 40. need. In the present embodiment, the bottom portion 92 is circular. Of course, the shape of the bottom portion 92 is deformable into a square, oval.

The side wall portion 94 of the outer cover 90 is formed to a height that can cover all the outer circumferential surface of the frame 10 and the first suspension 40 constituting the multifunction micro speaker 1. In addition, an opening groove 98 is formed in the side wall portion 94 of the outer cover 90 so that the power supply terminal connecting portion 14 formed in the frame 10 protrudes to the outside of the outer cover 90.

The frame 10 is usually made of plastic. The outer circumference of the diaphragm 20 is coupled to the upper portion of the frame 10. In addition, the outer peripheral portion of the upper cover 120 is coupled to the upper surface of the diaphragm 20. In the present embodiment, the frame 10 is generally cylindrical in shape, and the power supply terminal connection portion 14 protrudes from a part of the outer circumferential surface to supply power from the outside. The power supply terminal connector 14 is inserted into the open groove 98 of the outer cover 90 and protrudes to the outside. The power supply terminal connector 14 is coupled to a lead wire 11 for supplying power to the voice coil 30 and a coil spring 15 connected to an external power supply line.

In other embodiments, the shape of the cross section of the frame 10 may be rectangular, elliptical or track-shaped. In each case, the internal parts can also be modified as appropriate to their external shape.

In addition, as shown in Figure 3, the insertion groove 12 is formed along the circumferential direction of the lower surface of the frame 10. The insertion groove 12 is inserted into the engaging projection 42 formed along the edge circumferential direction of the first suspension (40).

The outer diaphragm of the diaphragm 20 is fixed to the upper portion of the frame 10. The diaphragm 20 is circular and is usually made of a high molecular compound. The diaphragm 20 vibrates up and down to produce a sound pressure that can be heard by a person.

In the present embodiment, the diaphragm 20 is divided into an inner part located inside and an outer part located outside based on a boundary portion where the upper end of the voice coil 30 is coupled. The inner part and the outer part are each dome-shaped, and the boundary part is flat. The outer part is also called the edge. The diaphragm 20 is capable of various changes in specific shape, material, and thickness.

The voice coil 30 is fixed to the lower surface of the diaphragm 20. The upper end of the voice coil 30 is fixed to the lower surface of the boundary of the diaphragm 20. The voice coil 30 is formed by winding a conductive wire in an upward direction. The voice coil 30 receives a current from the outside.

The lower portion of the voice coil 30 is located in the space between the first permanent magnet 60 and the plate 70 coupled in the vertical direction and the side wall of the yoke 50. This space is called a magnetic gap. When a high frequency current for the acoustic signal flows through the voice coil 30, the voice coil 30 moves in the vertical direction due to a mutual relationship with the magnetic field generated by the first permanent magnet 60. As a result, the diaphragm 20 coupled to the voice coil 30 vibrates to generate sound.

The first suspension 40 is elastic and includes a coupling protrusion 42, a first support part 44, and a first boss part 46.

The coupling protrusion 42 protrudes upward along the circumferential direction of the edge of the first suspension 40 and is inserted into the insertion groove 12 of the frame 10.

The first supporting portion 44 is disposed at equal intervals along the circumferential direction of the first suspension 40. The first support part 44 supports the first suspension 40 between the frame 10 and the first spacer 80. In the present embodiment, four first supporting portions 44 are formed around the first suspension 40.

The first boss portion 46 is formed to protrude upward from a central portion of the first suspension 40. The first boss part 46 is inserted into the first boss insertion part 54 formed at the center of the yoke 50. The first boss portion 46 is inserted into the first boss insertion portion 54 such that the first suspension 40 moves toward the side wall portion 94 of the outer cover 90 when the first suspension 40 vibrates. Prevents tipping.

The first suspension 40 may be referred to as an elastic member, a spring or a plate spring. The elasticity refers to the property of changing the volume and shape when an external force is applied to the object and then returning to the shape of Bondi when the force is removed. The elasticity is divided into volume elasticity and shape elasticity according to the type of deformation. In the case of the present invention, the first suspension 40 is mainly related to shape elasticity.

In the present embodiment, the first suspension 40 is in the shape of a plate and has a disc shape so as to correspond to the shape of the frame 10. The suspension 40 is made of a metal plate such as phosphor bronze. Meanwhile, in another embodiment, the first suspension 40 may be made of a polymer elastic material.

The yoke 50 is fixed to the central portion of the upper surface of the first suspension 40 in this embodiment. The yoke 50 may be bonded to a central portion of the first suspension 40 or may be bonded by an adhesive film (not shown). The first permanent magnet 60 is coupled to the bottom surface 52 of the yoke 50, and the upper end of the yoke 50 is disposed at a position higher than the lower end of the voice coil 30. A first boss inserting portion 54 into which the first boss portion 46 of the first suspension 40 is inserted is formed at the central portion of the yoke 50.

The first permanent magnet 60 is fixed to the inner bottom surface 52 of the yoke 50 so as to be concentric with the yoke 50. The first permanent magnet 60 is formed in a disc shape so as to correspond to the shape of the yoke 50. The first permanent magnet 60 may be bonded to the bottom surface 52 of the yoke 50 or bonded by an adhesive film.

The plate 70 is fixed to an upper surface of the first permanent magnet 60. The plate 70 is made of a material that allows magnetic force to pass through, and has a diameter substantially the same as that of the first permanent magnet 60. The first permanent magnet 60 and the plate 70 may be bonded or bonded by an adhesive film.

The first permanent magnet 60 and the plate 70 are fixed to be spaced apart from the upper end of the yoke 50. A space is formed between the first permanent magnet 60 and the upper end of the yoke 50 that faces the outer surface of the plate 70, and the lower portion of the voice coil 30 is located in this space.

The first permanent magnet 60, the plate 70, and the yoke 50 constitute a magnetic circuit of the speaker. That is, the magnetic flux generated in the first permanent magnet 60 generates a magnetic flux path (path) entering the yoke 50 via the plate 70. When a current suitable for vibration (usually a low frequency current) is applied to the voice coil 30, vertical movement of a magnetic circuit part (vibration body) composed of the yoke 50, the first permanent magnet 60, and the plate 70 is performed. The vibration signal is generated.

The first spacer 80 is coupled to the bottom surface of the first suspension 40. The first spacer 80 is provided to secure a space between the bottom portion 92 of the outer cover 90 and the first suspension 40. The first spacer 80 may be made of metal or synthetic resin. In the present embodiment, the first spacer 80 has a ring shape corresponding to the outer shape of the bottom portion 92 of the outer cover 90. As shown in Fig. 6, the first spacer 80 has a quadrangular cross section and a rounded round portion 82 at the corner.

Meanwhile, the multifunctional micro speaker 1 according to the present invention includes a second suspension 130, a second magnet 140, and a second spacer 150.

The second suspension 130 is disposed between the first spacer 80 and the second spacer 150. The outer peripheral portion of the upper surface of the second suspension 130 is coupled to the lower surface of the first spacer 80.

The second suspension 130 has the same elasticity as the first suspension 40, and the second support part 132 is disposed at equal intervals along the edge circumferential direction. The second support portion 132 includes a bent portion 132a that is bent upward so that its distal end is fitted into the round portion 82 of the first spacer 80.

In the present embodiment, the second suspension 130 is made of the same material as the first suspension 40. However, in another embodiment, the materials of the first suspension 40 and the second suspension 130 may not be the same.

The second magnet 140 is fixed to the lower surface of the second suspension 130. A central portion of the second suspension 130 protrudes upward to provide a space in which the second magnet 140 is coupled. The second magnet 140 is spaced apart from the first suspension 40 and the yoke 50.

The polarity of the vertical direction of the second magnet 140 may be arranged in the S pole and the N pole from the top to the bottom as needed, or may be arranged in the N pole and the S pole from the top to the bottom. In addition, the second magnet 140 may be a permanent magnet or may be an electromagnet. Meanwhile, a second boss inserting portion 142 into which the second boss portion 99 of the outer cover 90 is inserted is formed at the central portion of the second magnet 140.

The second magnet 140 and the second suspension 130 serve as a vibrator for generating a vibration signal. In the multifunction micro speaker 1 of the present embodiment, a vibrator composed of a second magnet 140 and a second suspension 130 includes a magnetic circuit composed of a first permanent magnet 60, a plate 70, and a yoke 50. Although spaced apart from each other, the magnetic circuit and the vibrator are interconnected by a magnetic field, the vibration movement of the vibration plate 20 for the sound generation, and the vibration movement of the vibrator consisting of the second magnet 140 and the second suspension 130 Mutual interference is minimized.

In addition, the second boss portion 99 of the outer cover 90 is inserted into the second boss insertion portion 142 of the second magnet 140, so that the second suspension 130 when the second suspension 130 vibrates ( 130 is prevented from being oriented toward one side toward the side wall of the outer cover (90).

Hereinafter, the assembly process and operation of the multi-function micro speaker 1 according to the present invention by the above configuration will be described in detail.

Components of the multifunction micro speaker 1 are laminated and assembled from the bottom portion 92 of the outer cover 90. Specifically, the second spacer 150, the second suspension 130, the first spacer 80, the first suspension 40, the frame 10, the diaphragm 20, and the top cover 120 are bottomed. Laminated from (92) in order to assemble. At this time, the power supply terminal connecting portion 14 of the frame 10 is inserted into the open groove 98 of the outer cover (90).

A yoke 50 is coupled to an upper surface of the first suspension 40, a first permanent magnet 60 is coupled to a bottom surface 52 of the yoke 50, and an upper surface of the first permanent magnet 60. The plate 70 is in a coupled state. In addition, a second magnet 140 is coupled to a bottom surface of the second suspension 130.

The engaging projection 42 of the first suspension 40 is inserted into the insertion groove 12 of the frame 10, the first support portion 44 of the first suspension 40 is the frame 10 and the first The first suspension 40 is supported between the first spacers 80.

In addition, an edge of the second suspension 130 is disposed between the first spacer 80 and the second spacer 150. In addition, the second support part 132 of the second suspension 130 firmly supports the second suspension 130 between the first spacer 80 and the second spacer 150. The bent portion 132a of the second support portion 132 is caught by the round portion 82 of the first spacer 80.

Then, as shown in Figure 3, by curling the upper end of the outer cover 90 to form a curling portion 91, the assembly of the component parts is completed.

As described above, the multi-function micro speaker 1 according to the embodiment of the present invention stacks the components in the outer cover 90 and then assembles the components by curling the upper end, thereby simplifying the manufacturing process to improve productivity. In addition, since the external shock is absorbed by the outer cover 90, the shock transmitted to the component is alleviated to provide a multifunctional micro speaker 1 having improved durability.

In addition, in order to secure a space between the first suspension 40 and the second suspension 130, and a space between the second suspension 130 and the bottom portion 92 of the outer cover 90, the first spacer 80 and By using the second spacer 150, the component parts can be easily assembled while securing the space of the component parts.

In addition, in order to securely couple the frame 10 and the first suspension 40, the insertion groove 12 is formed in the frame 10, and the coupling protrusion 42 is formed in the first suspension 40. Combination of the frame 10 and the first suspension 40 is easy, and the first suspension 40 is not separated from the frame 10 even in the external impact.

In addition, the cross section of the first spacer 80 is formed in a quadrangular shape as a whole, the corner portion is formed to be round, and the bent portion 132a of the second support portion 132 is fitted to the round portion 82, thereby providing a first The spacer 80 and the second suspension 130 are also easily and stably combined.

In addition, the air hole 96 formed in the bottom portion 92 of the outer cover 90 allows the air to circulate inside and outside the outer cover 90. Since the air flow generated when the first suspension 40 and the second suspension 130 are vibrated is circulated through the air hole 96, the air flow generated when the first and second suspensions 40 and 130 are vibrated. 2, minimize the impact on the vibration of the suspension (40,130).

In addition, the first boss portion 46 formed on the first suspension 40 and the second boss portion 99 formed on the outer cover 90 may prevent the first and second suspensions 40 and 130 from being oriented to one side. In addition, the first and second suspensions 40 and 130 may be prevented from being torn or incompletely vibrated.

Meanwhile, the multifunctional micro speaker according to the present invention may be spherical in various other modifications.

For example, the frame employed in the embodiment of the present invention is formed to protrude from the power supply terminal connection portion, it may be formed in a form accommodated in the outer cover. In addition, although the first support part is separately formed in the first suspension, the first support part may not be formed. Similarly, the second support may not be formed separately in the second suspension. In addition, the shape of the first and second spacers may be variously changed according to the shape of the bottom of the outer cover. In addition, in the present embodiment, the second magnet is coupled to the bottom surface of the second suspension, but may also be coupled to the top surface.

As mentioned above, although this invention was demonstrated in detail about the preferred embodiment, this invention is not limited to the said Example, A various many deformation | transformation may be provided within the range which does not deviate from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10 ... Frame 14 ... Power supply connection
20 ... diaphragm 30 ... voice coil
40 ... the first suspension 42 ... the engaging projection
44 The first support part 46 The first boss part
50 ... York 54 ... First boss insert
60 ... 1st permanent magnet 70 ... Plate
80 ... first spacer 82 ... round
90 ... outer cover 96 ... air hole
98 ... Open groove 99 ... Second boss
120 .. Top cover 130 ... Second suspension
132 ... second support 132a ... bend
140 ... 2nd magnet 142 ... 2nd boss insert
150 ... second spacer

Claims (13)

frame;
A diaphragm having an outer circumferential portion fixed to the frame;
A voice coil fixed to the lower surface of the diaphragm;
A first suspension having an outer circumference coupled to the frame and having elasticity;
A yoke fixed to the first suspension;
A first permanent magnet fixed to the bottom surface of the yoke;
A plate fixed to an upper surface of the first permanent magnet; And
A bottom cover and a side wall, the outer cover accommodating the frame and the first suspension;
The side wall of the outer cover, the multi-function micro speaker, characterized in that the opening is formed so that the frame is protruding. The method of claim 1,
The outer cover is a multi-function micro speaker, characterized in that the upper end is bent inward with a curling portion curled. The method of claim 1,
The bottom of the outer cover, a multi-function micro speaker, characterized in that a plurality of air holes are formed. delete frame;
A diaphragm having an outer circumferential portion fixed to the frame;
A voice coil fixed to the lower surface of the diaphragm;
A first suspension having an outer circumference coupled to the frame and having elasticity;
A yoke fixed to the first suspension;
A first permanent magnet fixed to the bottom surface of the yoke;
A plate fixed to an upper surface of the first permanent magnet; And
A bottom cover and a side wall, the outer cover accommodating the frame and the first suspension;
Multifunctional micro speaker, characterized in that the insertion groove is formed along the circumferential direction of the lower surface of the frame. The method of claim 5,
The multifunction micro-speaker, characterized in that the engaging projection is inserted into the insertion groove along the edge circumferential direction of the first suspension. frame;
A diaphragm having an outer circumferential portion fixed to the frame;
A voice coil fixed to the lower surface of the diaphragm;
A first suspension having an outer circumference coupled to the frame and having elasticity;
A yoke fixed to the first suspension;
A first permanent magnet fixed to the bottom surface of the yoke;
A plate fixed to an upper surface of the first permanent magnet; And
A bottom cover and a side wall, the outer cover accommodating the frame and the first suspension;
In the first suspension,
It is arranged at equal intervals along the edge circumferential direction, the multi-function micro speaker, characterized in that the first support for supporting the first suspension is formed between the frame and the first spacer. The method of claim 1,
Multi-function micro speaker characterized in that it comprises an upper cover coupled to the outer peripheral portion on the upper surface of the diaphragm. frame;
A diaphragm having an outer circumferential portion fixed to the frame;
A voice coil fixed to the lower surface of the diaphragm;
A first suspension having an outer circumference coupled to the frame and having elasticity;
A yoke fixed to the first suspension;
A first permanent magnet fixed to the bottom surface of the yoke;
A plate fixed to an upper surface of the first permanent magnet; And
A bottom cover and a side wall, the outer cover accommodating the frame and the first suspension;
And a first spacer coupled to a bottom surface of the first suspension. 10. The method of claim 9,
A second suspension having an outer circumferential portion coupled to a lower surface of the first spacer;
A second magnet coupled to the second suspension; And
And a second spacer having an outer circumference coupled to a lower surface of the second suspension.
The second suspension, the second magnet, and the second spacer are accommodated in the outer cover,
The lower surface of the second spacer is a multifunctional micro speaker, characterized in that coupled to the bottom of the outer cover. The method of claim 10,
The first spacer is formed in a ring shape,
The cross section of the first spacer is a multi-function micro speaker, characterized in that the rectangular shape having a rounded rounded corner. The method of claim 11,
In the second suspension,
And a second support part arranged at equal intervals along the edge circumferential direction and having a bent portion bent upwardly so that the outer end portion is fitted into the round portion. The method of claim 10,
The bottom portion of the outer cover is formed with a second boss projecting upward from the center,
The second magnet is a multi-function micro speaker, characterized in that the second boss insertion portion is formed to be inserted into the second boss portion.
KR20100000899A 2010-01-06 2010-01-06 Multi-function micro-speaker KR101192397B1 (en)

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CN2011800001210A CN102273230A (en) 2010-01-06 2011-01-05 Multifunctional microspeaker
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KR101783417B1 (en) * 2017-04-27 2017-09-29 주식회사 블루콤 SPICOM Composed of Linear Vibration Motor and Speaker
KR102242204B1 (en) * 2019-10-23 2021-04-21 삼원액트 주식회사 Micro-speaker

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CN102273230A (en) 2011-12-07
TW201129120A (en) 2011-08-16
WO2011083960A2 (en) 2011-07-14
TWI491274B (en) 2015-07-01
KR20110080588A (en) 2011-07-13
WO2011083960A3 (en) 2011-10-27

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