KR101727428B1 - Speaker for mobile terminals - Google Patents

Speaker for mobile terminals Download PDF

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Publication number
KR101727428B1
KR101727428B1 KR1020160031745A KR20160031745A KR101727428B1 KR 101727428 B1 KR101727428 B1 KR 101727428B1 KR 1020160031745 A KR1020160031745 A KR 1020160031745A KR 20160031745 A KR20160031745 A KR 20160031745A KR 101727428 B1 KR101727428 B1 KR 101727428B1
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KR
South Korea
Prior art keywords
fpcb
vibration
speaker
mold
terminal
Prior art date
Application number
KR1020160031745A
Other languages
Korean (ko)
Inventor
임종개
Original Assignee
주식회사 수콘
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 수콘 filed Critical 주식회사 수콘
Priority to KR1020160031745A priority Critical patent/KR101727428B1/en
Application granted granted Critical
Publication of KR101727428B1 publication Critical patent/KR101727428B1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • 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

Abstract

The present invention relates to a speaker for a mobile terminal which is slim and has improved productivity and durability. The speaker for a mobile terminal comprises: a rectangular speaker mold forming a yoke accommodating part; a magnetic yoke coupled to the yoke accommodating part at a lower part of the speaker mold; a fixed magnet mounted in a magnet accommodating part formed on an upper surface of the magnetic yoke; an FPCB vibration part coupled to an upper surface of the speaker mold; a vibration plate coupled to a central part of the FPCB vibration part; an engaging terminal pressing an FPCB terminal plate in a terminal binding groove formed in the speaker mold; a grill protecting the vibration plate; a vibration buffer space; and a vibration pore.

Description

[0001] Speaker for mobile terminals [

The present invention relates to a speaker for a portable terminal, and more particularly to a speaker for a portable terminal, which comprises a speaker mold formed in a rectangular shape and forming a yoke accommodating portion, and a yoke accommodating portion formed at a lower side of the speaker mold, A fixed yoke mounted on a top surface of the magnetic yoke, a fixed mark net mounted on a top surface of the magnetic yoke, an FPCB vibrating unit having a frame attached to an upper surface of the speaker mold, a vibration plate coupled to a central portion of the FPCB vibrating unit, A vibration terminal formed on a side surface of the magnetic yoke and a fixed marking surface; a vibration terminal formed on the outer surface of the magnetic yoke, Space, a vibrating pore ventilated downward at the four corners of the magnetic yoke So that the speaker can be assembled and mounted on the mounting board, the assembly by mounting suction is facilitated, the buffering of air and the flow of air are smoothly performed at the lower portion of the diaphragm, and the sound generation due to the vibration of the diaphragm is clearly The purpose of this paper is to provide

It is another object of the present invention to provide a magnetic force vibration part in which a printed circuit for generating a magnetic force is formed in a central portion of an FPCB mold fixing part which is seated on a speaker mold, And the FPCB terminal plate protruding outwardly and receiving an electric signal from the outside is formed, and the magnetic force vibrating part is formed in an S shape protruding from the center of both sides opposite to each other to form an elastic supporting piece fixed to the inside of the opposite FPCB mold fixing part So that the vibration of the magnetically vibrating part due to the electric signal input from the outside can be smoothly and clearly performed.

It is still another object of the present invention to provide a vibrating cushion part formed by corrugation so as to maintain the restoring force due to vibration to the inside of the vibration fixing part and the vibration fixing part of the diaphragm, The weight of the FPCB adhered to the edge of the magnetically oscillating portion and the weight of the FPCB adhered portion due to the vibration are reduced so that the inertia vibration is suppressed so that the adhesion of the vibration plate to the FPCB vibrating portion is clear, And minimizes the inertia vibration by minimizing the weight, so that the vibration is smoothly and clearly performed.

It is still another object of the present invention to provide a flexible printed circuit board (FPCB) comprising a FPCB coupling portion formed by bending a ring-shaped terminal to connect a FPCB terminal plate to a terminal coupling groove of a speaker mold, and a board connecting portion formed by sloping upward from a lower portion of the FPCB coupling portion, And it is an object of the present invention to easily and clearly bind a FPCB binding portion of a negative FPCB to a mounting board by means of binding and fitting.

In general, a speaker for a mobile phone terminal generates sound by vibrating the surrounding air according to a voice signal transmitted by an electric signal, and the size of the speaker is reduced.

The speaker for the portable terminal includes a diaphragm provided inside the developed speaker body, a vibration induction coil coupled to the diaphragm, and a fixed magnet for driving the vibration induction coil according to an input electrical signal, as in the registered patent No. 10-0890393 .

The speaker for a portable terminal as described above is generated by a magnetic field of a vibration induction coil due to a voice signal cut by an electric signal, and the vibration induction coil repeats a vertical motion according to a change of a magnetic field to move the diaphragm up and down, Causing the sound to be generated.

However, the conventional speaker for a portable terminal as described above is constituted by a vibration induction coil whose structure is activated, and a certain movable space is required to be operated in accordance with a change of a magnetic field according to an inputted electric signal, So that it is difficult to make the portable terminal slim.

In addition, the conventional speaker for a portable terminal has a problem that the productivity is deteriorated because the automatic assembly process is not completed due to the vibration induction coil formed into a cylindrical shape.

In addition, the conventional portable terminal speaker has a problem that the vibration induction coil is configured to perform a direct moving motion, and a repetitive shearing load is applied to a signal line through which an electric signal is transmitted, so that the durability due to the damage of the signal line is limited.

Korean Patent No. 10-0890393

Accordingly, the above-described conventional speaker for a portable terminal is constituted by a vibration induction coil whose structure is activated, so that a certain movable space for operating according to a change of a magnetic field according to an inputted electric signal is required, Which is almost impossible to manufacture with a height of 2 mm or less, thereby making it possible to make the portable terminal slimmer, improve the productivity by the automatic assembling process, prevent the signal line from being damaged by repetitive vibration, .

That is, according to the present invention, there is provided a speaker for a portable terminal, comprising: a speaker mold formed in a rectangular shape to form a yoke accommodating portion; a magnetic yoke fitted in a lower portion of the speaker mold to a yoke accommodating portion formed on a lower side of the speaker mold; An FPCB vibrating part having a frame attached to an upper surface of the speaker mold, a diaphragm coupled to a central part of the FPCB vibrating part, a terminal connecting groove formed in the terminal binding groove formed in the speaker mold, A vibration buffer space formed between a side surface of the magnetic yoke and a fixed marking outer surface, a vibration buffer space formed between the side surface of the magnetic yoke and the lower surface of the magnetic yoke, And a vibrating pores that are communicated with the vibrating pores.

The present invention is characterized in that a magnetic force generating portion is formed in a central portion of an FPCB mold fixing portion of a FPCB vibrating portion which is mounted on a speaker mold and a printed circuit for generating magnetic force is formed on both sides of the same in a same direction, And the FPCB terminal plate on which an electric signal is inputted from the outside is formed. The magnetic force vibrating part is formed in an S shape protruding from the center at both sides of the opposite sides to form an elastic supporting piece fixed to the inside of the opposite FPCB mold fixing part It is.

The present invention relates to a vibrating cushion unit comprising a vibrating cushion unit formed by corrugation to maintain a restoring force due to vibration to a vibration fixing unit and an inner side of the vibration fixing unit by a vibration plate, The FPCB adhering portion being adhered to the rim and the reduction incision portion for reducing inertia vibration by reducing the weight due to the vibration inside the FPCB adhering portion.

The present invention is characterized in that the engaging terminal is constituted by an FPCB binding portion bent in a ring shape to fit the FPCB terminal plate into the terminal binding groove of the speaker mold and a board connecting portion formed upward from the lower portion of the FPCB binding portion.

Accordingly, the present invention provides a speaker module comprising: a yoke accommodating portion formed on a lower side of a speaker mold; a fixed mark net that is seated on a magnetic yoke inserted in a lower portion of a speaker mold; a diaphragm coupled to a central portion of the FPCB oscillating portion; And a vibrating pores formed in a bottom surface of the magnetic yoke, the vibrating pores being communicated downward at four corners of the magnetic yoke, wherein the vibrating pores are communicated with the bottom surface of the magnetic yoke, And the speaker can be easily assembled to the mounting board and can be easily assembled by the suction and mounting of the speaker can be facilitated and the air can be buffered and the air can flow smoothly under the vibration plate And the sound generation due to the vibration of the diaphragm is clearly made.

1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is a perspective view showing an embodiment of the present invention. FIG.
3 is a side sectional view showing an embodiment of the present invention.
4 is a bottom exploded perspective view showing an embodiment of the present invention.
5 is a bottom perspective view showing an embodiment of the present invention.
FIG. 6 is an enlarged cross-sectional view of the engaging terminal showing an embodiment of the present invention
FIG. 7 is a perspective view of a fixed magnetic fastening assembly according to an embodiment of the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a portable terminal which is formed to have a speaker height of 2 mm or less to facilitate miniaturization of the portable terminal, facilitates assembly of the speaker by mounting and mounting suction on a mounting board, The present invention is not limited to the use of words or words used in the present specification and claims and should not be construed as limited to ordinary or dictionary terms, It should be construed as meaning and concept consistent with the technical idea of the present invention based on the principle that the concept of the term can be appropriately defined in order to explain it as the best way.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

That is, according to the present invention, there is provided a speaker for a portable terminal, comprising: a speaker mold 10 formed in a rectangular shape to form a yoke accommodating portion 11; and a yoke accommodating portion 11 formed on a lower side of the speaker mold 10 A magnetic yoke 20 fitted on the lower portion of the speaker mold 10, a fixed mark nectic 40 seated in a mark net receiving portion 21 formed on the upper surface of the magnetic yoke 20, A diaphragm 60 coupled to a central portion of the FPCB vibrating unit 50 and an FPCB terminal plate 60 connected to the terminal binding groove 13 formed in the speaker mold 10. The FPCB vibrating unit 50 includes an FPCB vibrating unit 50, 53 are press-fitted and electrically coupled to each other.

The diaphragm 60 may be coupled to an upper portion of the diaphragm 60 to protect the diaphragm 60.

A vibration buffer space 31 formed between the side wall of the magnetic yoke 20 and the outer surface of the fixed mark net 40 and a vibration pore 32 which is downwardly ventilated at four corners of the magnetic yoke 20 .

The FPCB vibrating unit 50 includes a magnetically vibrating unit 52 having a printed circuit for generating a magnetic force at the center of the FPCB mold fixing unit 51 that is seated on the speaker mold 10, And an FPCB terminal plate 53 is formed on one side of the FPCB mold fixing part 51 and protrudes outward to receive an electric signal from the outside.

The magnetic force vibrating part 52 is formed in an S shape protruding from opposite sides of the opposite sides to form an elastic supporting piece 54 fixed to the inside of the opposite FPCB mold fixing part 51.

The diaphragm 60 includes a vibration fixing portion 61 and a vibration vibration cushion portion 62 formed inside the vibration fixing portion 61 so as to maintain a restoring force due to vibration, The FPCB adhering portion 63 adhered to the rim of the magnetic force vibration portion 52 by the FPCB vibration portion 50 and the weight due to the vibration are reduced inside the FPCB adhering portion 63 by the minimum adhesive to the inner edge, And a reduction incision section 64 for suppressing vibration.

The engaging terminal 70 includes an FPCB coupling portion 71 bent in a ring shape to fit the FPCB terminal plate 53 into the terminal coupling groove 13 of the speaker mold 10 and the FPCB coupling portion 71, And a board connecting portion 72 formed to be inclined upward from a lower portion of the board connecting portion 72.

The FPCB coupling portion 71 may be provided with a connection protrusion 71a which is brought into close contact with the surface of the FPCB terminal plate 53 so that electrical connection can be clearly made.

The grill 81 forms a vibrating portion accommodating space capable of accommodating vibrating portions in the grill 81. The grill 81 is formed by bending a mold seating portion downward at four corners so as to be seated on the speaker mold 10, And a grill fastener 81a having a ring shape is seated and engaged.

Meanwhile, a grill net 82 having air permeability is coupled to an upper portion of the grill 80 on which the grill fastener 81a is placed to prevent foreign matter from entering.

In addition, the permeation mesh 32a is coupled to the lower portion of the vibration pore 32 to prevent foreign matter from flowing into the lower portion of the vibration pore 32 and smoothly flow through the vibration process of the vibration plate 60.

Hereinafter, the application process of the present invention will be described.

As described above, in a speaker for a portable terminal, a speaker mold 10, which is formed in a rectangular shape and forms a yoke accommodating portion 11, and a yoke accommodating portion 11 formed on a lower side of the speaker mold 10, A magnetic yoke 20 fitted to the lower portion of the mold 10, a fixed mark net 40 seated on the marking accommodating portion 21 formed on the upper surface of the magnetic yoke 20, A vibration plate 60 coupled to a central portion of the FPCB vibrating unit 50 and an FPCB terminal plate 53 attached to the terminal binding groove 13 formed in the speaker mold 10, The speaker can be easily mounted on the mounting board, and the speaker can be easily mounted on the mounting board. Further, when the speaker is mounted on the mounting board, Easy to assemble by mounting suction It is getting worse.

In the embodiment of the present invention, a vibration buffer space 31 is formed between the side wall of the magnetic yoke 20 and the outer surface of the fixed market 40, And the vibration pores 32, vibrations of the diaphragm 60 can be smoothly buffered and ventilated by vibration.

In the embodiment of the present invention, the FPCB vibrating unit 50 includes a printed circuit for inducing a magnetic force in the central portion of the FPCB mold fixing unit 51, which is seated on the speaker mold 10, And an FPCB terminal plate 53 is formed on one side of the FPCB mold fixing part 51 and protruded outward to receive an electric signal from the outside. When the operation of the magnetic force vibrating unit 52 is performed by forming the elastic supporting pieces 54 which are protruded to the opposite sides from the center at both sides and are formed in an S shape and fixed to the inside of the opposite FPCB mold fixing part 51 .

In the embodiment of the present invention, the diaphragm 60 includes a vibration fixing part 61 and a vibration cushion part 62 formed inside the vibration fixing part 61 so as to maintain a restoring force due to vibration, An FPCB adhering portion 63 adhered to the rim of the magnetic force vibration portion 52 by the FPCB vibrating portion 50 by the minimum adhesive on the inner edge of the cushion portion 62 and the inner side of the FPCB adhering portion 63 The weight of the diaphragm 60 is reduced and the weight of the diaphragm 60 is reduced so that the inertia vibration is suppressed. The vibration is minimized and the vibration is smoothly and clearly made.

In the embodiment of the present invention, the engaging terminal 70 includes an FPCB binding portion 71 bent in a ring shape to fit the FPCB terminal plate 53 into the terminal binding groove 13 of the speaker mold 10, The FPCB coupling portion 71 of the FPCB coupling portion 71 can be easily and clearly bound by fitting the FPCB coupling portion 71 of the FPCB vibrating portion 50 Mounting and mounting on the mounting board.

In the embodiment of the present invention, when the FPCB coupling portion 71 is provided with the connection protrusion 71a, it is brought into close contact with the surface of the FPCB terminal plate 53 inserted into the terminal coupling groove 13, And the engagement state of the FPCB terminal board 53 is clearly maintained.

10: Speaker mold
11: yoke housing part 12: FPCB mounting part 13: terminal binding groove
20: magnetic yoke 21:
31: vibration damping space 32: vibration pores 32a:
40: Fixed Marked Necrotic
50: FPCB vibration section
51: FPCB mold fixing part 52: magnetic force vibration part
53: FPCB terminal plate 54; Elastic gripping piece
60: diaphragm
61: Vibration fixing part 62: Vibration cushion part 63: FPCB adhering part 64: Reduction incision part
70: engaging terminal 71: FPCB engaging portion 71a: connecting protrusion 72: board connecting portion
81: Grill 81a: Grill fixture
82: Grill net

Claims (4)

A speaker for a portable terminal, comprising:
A speaker mold 10 which is formed in a rectangular shape and forms a yoke receiving portion 11 and a yoke receiving portion 11 formed on the lower side of the speaker mold 10, A fixed mark netic 40 that is seated in a marking receptacle 21 formed on the upper surface of the magnetic yoke 20 and an FPCB vibrating portion 50 which is bounded on a top surface of the speaker mold 10, A diaphragm 60 coupled to a central portion of the FPCB vibrating unit 50 and an engaging terminal 70 for electrically coupling the FPCB terminal plate 53 to the terminal binding groove 13 formed in the speaker mold 10 A vibration buffer space 31 formed between the sidewall of the magnetic yoke 20 and the outer surface of the fixed market 40, a grille 81 coupled to the diaphragm 60 to protect the diaphragm 60, , And a vibration pore (32) that is downwardly ventilated at four corners of the magnetic yoke (20);
The FPCB vibrating unit 50 is provided with a magnetic force vibrating unit 52 having a printed circuit for generating a magnetic force at the center of the FPCB mold fixing unit 51 that is seated on the speaker mold 10, One side of the FPCB mold fixing part 51 forms an FPCB terminal plate 53 that protrudes outward and receives an electric signal from the outside, and the magnetic force vibration part 52 protrudes from the center at opposite sides to form an S shape And an elastic gripping piece 54 fixed to the inside of the opposite-side FPCB mold fixing portion 51 is formed;
The diaphragm 60 includes a vibration fixing part 61 and a vibration cushion part 62 formed inside of the vibration fixing part 61 by corrugation so as to maintain a restoring force due to vibration and a vibration cushion part 62 formed on the inner side of the vibration cushion part 62 The FPCB adhering portion 63 adhered to the rim of the magnetic force vibration portion 52 by the FPCB vibration portion 50 by the minimum adhesive and the weight due to the vibration are reduced inside the FPCB adhering portion 63 to suppress the inertial vibration (64);
The engaging terminal 70 includes an FPCB coupling portion 71 bent in a ring shape to fit the FPCB terminal plate 53 into the terminal coupling groove 13 of the speaker mold 10, And a board connecting portion 72 formed to be inclined upward,
The FPCB coupling portion 71 is provided with a connection protrusion 71a which is brought into close contact with the surface of the FPCB terminal plate 53 so that electrical connection can be clearly made;
Wherein the vibrating pores (32) are formed with a ventilating net (32a) to prevent foreign matter from flowing into the lower part of the vibrating pores (32) and smoothly ventilating the diaphragm (60).
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KR1020160031745A 2016-03-16 2016-03-16 Speaker for mobile terminals KR101727428B1 (en)

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KR1020160031745A KR101727428B1 (en) 2016-03-16 2016-03-16 Speaker for mobile terminals

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021000077A1 (en) * 2019-06-29 2021-01-07 瑞声声学科技(深圳)有限公司 Speaker box

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100890393B1 (en) 2008-03-05 2009-03-26 주식회사 블루콤 Microspeaker
KR20130127128A (en) * 2012-05-14 2013-11-22 주식회사 이엠텍 Magnetic flux inducing element for sound transducer
KR20140056447A (en) * 2012-10-25 2014-05-12 주식회사 이엠텍 Sound transducer with ventilation structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100890393B1 (en) 2008-03-05 2009-03-26 주식회사 블루콤 Microspeaker
KR20130127128A (en) * 2012-05-14 2013-11-22 주식회사 이엠텍 Magnetic flux inducing element for sound transducer
KR20140056447A (en) * 2012-10-25 2014-05-12 주식회사 이엠텍 Sound transducer with ventilation structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021000077A1 (en) * 2019-06-29 2021-01-07 瑞声声学科技(深圳)有限公司 Speaker box

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