JP2004343257A - Speaker fixing structure in mobile electronic equipment and speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for preventing deterioration in the acoustic characteristic of a speaker caused by a gap which leads to the outside of an enclosure and exists in the vicinity of the speaker mounted inside the enclosure. <P>SOLUTION: A speaker 5 is fixed to form a front chamber between the inner face of a rear face case 32 and the speaker 5 itself when the speaker 5 is abutted onto a speaker fixing rib 39 which is provided annularly around a speaker sounding hole 38 on the inner face of a rear face side case 32 of the enclosure via an annular cushion 52 fixed to the front face of the speaker 5. An exhaust direction controlling rib 57 is formed to a frame 54 of the speaker 5 in a direction orthogonal to a circuit board 33 at mounting, and the exhaust direction controlling rib 57 is abutted on a cushion member 37 fixed to the circuit board 33 to form a wall for interrupting the space between a damping hole 55 provided to the rear side of the speaker and a hinge. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a speaker mounting structure in a portable electronic device such as a mobile phone having a built-in speaker, and a speaker structure suitable for mounting in a portable electronic device.
[0002]
[Prior art]
A mobile phone has a built-in speaker as a receiver for calls and a speaker that sounds a ringtone or ringtone. From a viewpoint, a method of connecting an acoustic emission opening provided in a case of a mobile phone and a sound emission opening of a speaker with an acoustic duct including a holding member formed of a viscoelastic body (Patent Document 1), (Patent Document 2), or a fitting portion for inserting a speaker is provided on the inner surface of the housing of the portable device, and the fitting portion is provided inside the fitting portion. After the cushion member is inserted, the speaker is pressed and inserted, engaged with and fixed to the claws provided in the fitting portion, and a small hole on the back side of the speaker for adjusting the output acoustic characteristics of the speaker. How covering lid provided (Patent Document 3) have been proposed.
[0003]
[Patent Document 1]
JP-A-11-18182 [Patent Document 2]
Japanese Patent Application Laid-Open No. 2001-127853 [Patent Document 3]
Japanese Patent Application Laid-Open No. 2001-168552
[Problems to be solved by the invention]
Currently, the mainstream loudspeaker that emits ringtones and ringtones for foldable cellular phones is limited by the diameter and thickness of the speakers and the mounting space between the operation unit housing and the display housing. Conventionally, it was often mounted on the operation unit side housing, but in recent years, a memory card for storing melody and standby screen data and storing image data and moving image data taken with a mobile phone with a camera function is inserted. Since it is necessary to mount a slot, it is becoming difficult to secure a space for mounting a speaker in the operation unit side housing.
[0005]
For this reason, it has become necessary to mount a speaker on the display-side housing. In recent years, however, since the color liquid crystal is also mounted on the back of the display-side housing, the speaker is mounted on the back of the display-side housing. The speaker cannot be mounted at the center, and therefore, the speaker is often mounted near a hinge portion, which is a connecting portion between the upper and lower housings.
[0006]
However, since the hinge portion is configured by fitting the front case and the rear case of the operation unit side housing and the display unit side housing, and the hinge, there are many gaps in these fitting portions. Occurs. When the speaker is mounted near a hinge portion, which is a connection portion between the upper and lower housings, sound leakage of the speaker mounted inside the housing occurs from this gap, and there is a problem of deterioration of acoustic characteristics.
[0007]
SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a means for preventing deterioration of the acoustic characteristics of a speaker due to the presence of a gap near the speaker mounted inside the housing when the gap exists outside the housing. Is to do.
[0008]
It is another object of the present invention to provide a means capable of protecting the speaker from an impact such as dropping, in addition to preventing the deterioration of the acoustic characteristics of the speaker.
[0009]
[Means for Solving the Problems]
The speaker fixing structure in the portable electronic device of the present invention includes a frame that supports the periphery of a diaphragm made of a thin film and a yoke that forms a magnetic circuit, and that has an exhaust braking hole that brakes exhaust from the back of the speaker. In a portable electronic device having a built-in dynamic speaker, the speaker is fixed around a sound emitting hole on the inner surface of the portable electronic device housing via an annular cushion provided around a front surface of the speaker, An exhaust direction control rib provided around the speaker rear side of the frame is brought into contact with a cushion member arranged on a circuit board in the portable electronic device housing, so that an exhaust direction from the exhaust braking hole is changed. It is characterized by being adjusted.
[0010]
Further, the dynamic speaker for mounting on a portable electronic device of the present invention is a frame having an exhaust braking hole for supporting the periphery of a diaphragm made of a thin film and a yoke constituting a magnetic circuit, and for braking exhaust from the back of the speaker. An annular cushion provided on the front side of the speaker and abutting around a sound emission hole on the inner surface of the portable electronic device housing; and the portable electronic device housing provided around the speaker rear side of the frame. An exhaust direction control rib for adjusting an exhaust direction from the exhaust braking hole by contacting a cushion material disposed on a circuit board in the body is provided.
[0011]
The present invention provides, for example, an exhaust direction control rib provided on a speaker body frame that is a hinge side at the time of mounting and provided on the circuit board from the yoke side and a cushion attached to the circuit board. Is pressed against the cushion to form a wall between the rear braking hole of the speaker and the hinge portion, whereby exhaust from the rear braking hole can be prevented from leaking to the hinge portion, and the acoustic characteristics of the speaker can be reduced. Deterioration can be suppressed.
[0012]
Further, since the exhaust direction control rib formed on the speaker main body frame is in contact with the circuit board via the cushion material, the inclination of the speaker can be suppressed and a gap between the case and the speaker can be prevented. It is possible to suppress the inclination of the speaker even when the user accidentally drops the mobile phone during normal use, and to prevent an excessive impact on the speaker fixing rib and the two-pole connector of the case. As a result, it is possible to prevent the breakage of the rib and prevent the occurrence of poor contact with the speaker due to the deterioration / breakage of the connector.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an external view showing the front, side and back of a mobile phone having a folding structure to which the present invention is applied.
[0014]
As shown in the figure, the mobile phone having the folding structure includes a first housing (hereinafter, referred to as a lower housing) 2 having a key operation unit, a microphone unit, and the like, and a hinge provided at an upper end of the lower housing 2. 4 and a second housing (hereinafter referred to as an upper housing) 3 having a display unit, a receiver for receiving voice, and the like rotatably connected at 4. Thereby, the upper housing 3 is opened and closed with respect to the lower housing 2.
[0015]
The lower housing 2 includes a front case 21 and a rear case 22, and the upper housing 3 includes a front case 31 and a rear case 32. The front case and the rear case are respectively screwed. And holds the components arranged therein.
[0016]
An operation unit, a battery, a vibrator, a control circuit, and the like are arranged in the lower housing 2. The main components are an input key arranged on the surface of the front side case 21, a power supply, a key input unit, a driving circuit such as a display unit and a speaker, a circuit board having an integrated circuit, a wireless circuit, and the like, and a voice. It has a microphone, an earphone jack, a slot for inserting a memory card for recording images and melody data, a battery, and the like as input means.
[0017]
The display units 34 and 41 are disposed on the front case 31 and the rear case 32 of the upper housing 3, respectively. In addition, a receiver (speaker) for receiving a call is arranged in the upper part of the display unit 34 in the front case 31, the antenna 6 is provided in the rear case 32, and a speaker for sounding a ring tone or a ring tone is provided. A speaker sound emission hole 38 which is arranged between the display unit 41 and the hinge 4 and emits output sound from the speaker is provided.
[0018]
FIG. 2 is a schematic exploded view of the upper housing 3 showing the embodiment of the present invention.
[0019]
The upper housing 3 includes a front case 31 on which a hinge 4 is provided and a display unit 34 is arranged, and a rear case 32. A speaker contact connector 36 is provided on a circuit board 33 fixed in the housing. , A display unit 34 composed of a liquid crystal display and a rear display unit 41, a speaker 5 for sounding a ringtone or a ringtone, and a receiver 35 for outputting a received voice.
[0020]
A speaker 5 for sounding a ringtone or a ringtone is fixed to the inner surface of the rear case 32, and an exhaust direction control rib integrally formed on a frame of the speaker 5 described later is fixed on the circuit board 33. It is arranged so as to contact the material. The extendable whip antenna 6 is fixed to the rear side case 32.
[0021]
3 to 5 show the structure of the speaker 5 mounted in the present embodiment. FIG. 3 is an external view showing the front, side, and back of the speaker 5, and FIG. FIG. 5 is a cross-sectional view taken along line -A ′, and FIG. 5 is a perspective view of the speaker of FIG. 3 as viewed from the rear side.
[0022]
The configuration of the speaker main body 51 has the structure of a general dynamic speaker shown in FIG. 4, and an efficient magnetic flux is applied between the permanent magnet 61 such as neodymium, the yoke 56, and the permanent magnet 61 and the yoke 56. A magnetic circuit composed of a top plate 62 made of a material such as SPC adhered to a permanent magnet 61 to form, and a voice arranged to cross a magnetic gap between the yoke 56 and the top plate 62 A coil 64, a diaphragm 63 made of a thin film such as PET supported by the voice coil 64, a yoke 56 and a PPA or the like which holds the periphery of the diaphragm 63 made of the thin film and constitutes the outer shape of the speaker 5. The vibration plate 63 is vibrated by a driving force generated by passing an AC current through the voice coil 64. Is a dynamic type speaker Could not.
[0023]
The frame 54 includes a braking hole 55 which is a through hole for exhausting air from the rear surface when the diaphragm 63 vibrates, a fixing engagement claw 58 when mounting on the rear side case 32, and a mounting hole 58 mounted on the circuit board 33. An electric signal input terminal 53 for obtaining a speaker drive signal by contacting the mounted two-pole connector 36 is provided. The electric signal input terminal 53 is made of a material such as Bs and has a surface thereof plated with a Ni underlayer of approximately 3 μm and a gold plating of approximately 0.5 μm.
[0024]
A plate-shaped exhaust direction control rib 57 having a thickness of about 0.7 mm is provided on the rear side of the frame 54 facing the electric signal input terminal 53 in a direction perpendicular to the circuit board 33 at the time of mounting. It is configured in a wall shape over a half circumference with a width of. A feature of the speaker of the present invention is that an exhaust direction control rib 57 is provided on a frame 54 made of plastic such as PPA for holding the yoke 61 and the electric signal input terminal 53. By changing the shape of the molding die of the frame 54, the rib 57 for exhaust direction control can arbitrarily set the rib width, arrangement, range, and the like.
[0025]
A protector 59 having a sound emission hole is provided on the front side of the speaker 5 in order to protect the diaphragm 63 from external stress, and a cushion 52 is attached on the protector 59. The cushion 52 is a cushion with mesh formed by laminating a cushion material in which a foam made of independent foam body is formed into a ring and a nylon mesh with a double-sided tape, and using a double-sided tape around the protector 59. Affixed.
[0026]
FIG. 6 is a rear external view of the upper housing 3 in the present embodiment, FIG. 7 is a cross-sectional view in the vertical direction (AA ′ line), and FIG. ) Respectively show cross-sectional views. Hereinafter, the speaker fixing structure in the mobile phone according to the present embodiment will be described with reference to FIGS.
[0027]
The circuit board 33 arranged in the upper case 3 is held by a rib provided on the front case 31 so as not to be displaced inside, and is held and screwed between the rear case 32 and screwed. Fixed. The speaker 5 is mounted between the rear display unit 41 of the upper housing 3 and the hinge unit 4, and an output sound is emitted from a sound emission hole 38 provided in the rear case 32.
[0028]
The input signal to the speaker 5 is transmitted through the two-pole connector 36 when the two-pole connector 36 mounted and mounted on the circuit board 33 contacts and is electrically connected to the electric signal input terminal 53 of the speaker 5. Supplied.
[0029]
The speaker 5 is in contact with a speaker fixing rib 39 provided annularly on the inner surface of the rear side case 32 via an annular cushion 52 fixed to the front surface of the speaker 5, and is formed on a frame 54 of the speaker 5. The fixed fixing claws 58 are fitted from both sides by the speaker fixing claws 40 provided on the inner surface of the rear case 32, and are fixed to the inner surface of the rear case 32.
[0030]
At this time, the speaker 5 is clamped so that no gap is formed between the front surface of the speaker 5 and the speaker fixing rib 39 by compressing the annular cushion 52 by about 20% with respect to the thickness dimension. The case 32 is fixed so as to form a front air chamber.
[0031]
As described above, when the speaker 5 is mounted in the vicinity of the hinge portion, which is a connection portion between the upper and lower housings, the hinge portions are respectively a front case, a rear case, and a hinge of the operation unit side housing and the display unit side housing. Due to the configuration, a gap is inevitably generated, and a sound leak of the speaker to the outside of the housing occurs from the gap, which causes a problem of deterioration of acoustic characteristics. In order to suppress the deterioration of the characteristics, it is necessary to prevent the exhaust gas from the braking hole 55 provided on the back surface of the speaker from leaking to the hinge when the diaphragm vibrates to generate sound.
[0032]
Therefore, in the present embodiment, the exhaust direction control ribs 57 are formed on the frame 54 of the speaker 5 in a direction orthogonal to the circuit board 33 at the time of mounting, and the exhaust direction control ribs 57 are fixed to the circuit board 33. By making contact with the cushion member 37, a wall that blocks between the hinge portion and the braking hole 55 provided on the back surface of the speaker is formed. Therefore, the cushion member 37 is attached to the circuit board 33 in advance in a range where the exhaust direction control rib 57 of the speaker 5 abuts.
[0033]
The cushion member 37 is made of a foamed material such as polon as a cushion material, and has a structure in which a double-sided tape for bonding to the circuit board 33 is attached to one side. The circuit board 33 is molded in such a shape that there is no gap between the exhaust direction control rib 57 of the speaker 5 and the circuit board 33 when the board 33 comes into contact with the speaker 5, and is attached to the circuit board 33 in advance.
[0034]
The rear case 32 on which the speaker 5 is mounted is fitted to the front case 31, holds the circuit board 33 therebetween, and is fixed to the case 31 by screws. At this time, the circuit board 33 is held in a state where the display unit 34, the rear display unit 41, the receiver 35, and the like are mounted so as not to be displaced by a rib provided on the case 31.
[0035]
When the circuit board 33 is mounted between the front case 31 and the rear case 32 by being screwed and screwed, the cushion 37 attached to the circuit board 33 includes the exhaust direction control rib 57 of the speaker 5 and the circuit board 33. 33 so that there is no gap between them. Therefore, the thickness of the cushion 37 is formed to be slightly larger than the gap generated between the exhaust direction control rib 57 formed on the frame of the speaker 5 and the circuit board 33 at the time of mounting.
[0036]
FIG. 9 is a front view and a cross-sectional view showing two configuration examples (a) and (b) of the cushion member 37 in the present embodiment.
[0037]
The cushion member 37 is composed of a cushion member 42 made of an independent foam represented by a polon material and a double-sided tape 43. The shape of the cushion member 37 is the same as that of the exhaust direction control rib 57 of the speaker 5 in FIG. The width is formed to be about 0.6 to 1.0 mm wider than the exhaust direction control rib 57 in consideration of mounting deviation and the like. In FIG. 9B, the shape is simplified in consideration of formability and cost, and a semicircle having a diameter about 0.6 to 1.0 mm larger than the circumference of the exhaust direction control rib 57 of the speaker 5. It is formed in a shape.
[0038]
The shape of the cushion member 37 is not limited to the above-described embodiment, and the exhaust hole control rib 57 is brought into contact with the cushion member 37 fixed to the circuit board 33 to form a braking hole provided on the rear surface of the speaker. Any shape that can form a wall that separates the space 55 from the gap communicating with the outside of the housing can be adopted.
[0039]
According to the speaker fixing structure in the portable electronic device of the present embodiment, the exhaust direction control rib 57 provided on the back side of the frame 54 of the speaker 5 in the mounting state in the direction orthogonal to the circuit board 33 is mounted in advance. It comes into contact with the cushion member 37 attached to the circuit board 33 so as to be compressed by about 20% with respect to the thickness dimension. As a result, a wall is formed between the brake hole 55 and the hinge portion of the speaker 5 within a range of 180 degrees around the hinge side of the speaker 5, and it is possible to suppress the exhaust from the brake hole 55 from leaking to the hinge portion. Deterioration of speaker characteristics can be suppressed.
[0040]
Further, since the exhaust direction control rib 57 of the speaker 5 is in contact with the circuit board 33 via the cushion 37, the inclination of the speaker when the housing is mounted is suppressed, and the speaker fixing rib 39 of the rear case 32, the speaker 5 and A gap is prevented from occurring between them. Therefore, even if the user accidentally drops the mobile phone during normal use, the speaker fixing rib 40 and the two-pole connector 36 of the rear case 32 are excessively attached to prevent the speaker from tilting in the housing. Such a shock can be prevented, and a role of preventing damage to the ribs and preventing occurrence of poor contact with the speaker due to deterioration or breakage of the connector can be achieved.
[0041]
10 to 11 are an external view showing a rear surface of a mobile phone according to another embodiment of the present invention and a schematic perspective view showing an arrangement of an internal configuration.
[0042]
The present embodiment is a case where the speaker 5 is mounted on the lower housing 2 of the foldable mobile phone, and the output sound from the speaker 5 is a speaker emission sound arranged on the back surface of the lower housing 2. Output from the hole 38.
[0043]
An earphone jack 26 and a memory card slot 27 mounted on the circuit board 20 are mounted on the lower housing 2, and the speaker 5 is arranged near the earphone jack 26 and the memory card slot 27. When the circuit board 20 is incorporated in a housing, a gap is formed in a fitting portion between the rear case, the earphone jack 26, the memory card slot 27, and the like, which causes a problem of deterioration of speaker characteristics.
[0044]
In order to suppress this deterioration, as shown in FIG. 11, the cushion member 29 previously attached to the circuit board 20 is moved in the thickness direction by the exhaust direction control ribs 57 integrally formed on the frame of the speaker 5, as shown in FIG. It is arranged and fixed so as to be in electrical contact with a two-pole connector 28 mounted and mounted on the circuit board 20 after being compressed by 20%.
[0045]
As a result, a wall is formed between the fitting gap between the earphone jack 26 and the memory card slot 27 and the rear case and the rear braking hole 55 of the speaker 5, and the exhaust from the rear braking hole 55 of the speaker leaks into the aforementioned gap. This makes it possible to prevent speaker characteristics from deteriorating.
[0046]
When the mounting position of the speaker 5 is the first housing described in the embodiment and the location that causes sound leakage is different from that in the embodiment, the arrangement and length of the exhaust direction control rib 57 are set. It is also possible to obtain the same effect by changing the rib range.
[0047]
【The invention's effect】
According to the present invention, the exhaust direction control ribs 57 provided in the direction of the circuit board 33 from the yoke side of the frame of the speaker main body 51 abut against the cushion attached to the circuit board 33, and the gap between the speaker and the hinge portion is formed. Since the wall is provided, the exhaust from the rear braking hole of the speaker can be prevented from leaking to the hinge portion, and the deterioration of the acoustic characteristics of the speaker can be suppressed.
[0048]
Further, since the exhaust direction control ribs 57 of the speaker 5 are in contact with each other via the cushion 37 attached to the circuit board 33, the stress on the electric signal input terminal 53 in contact with the connector 36 is balanced with the speaker. Of the rear case 32 and the gap between the speaker fixing rib 39 of the rear case 32 and the speaker 5 can be prevented, so that not only during normal use but also when the user accidentally drops the mobile phone. However, since the inclination of the speaker is suppressed, excessive shock is not applied to the speaker fixing rib 40 and the two-pole connector 36 of the rear case 32, and the rib is prevented from being damaged, and the poor contact with the speaker due to the deterioration / damage of the connector is prevented. It is possible to prevent occurrence.
[0049]
Further, even when the speaker 5 is mounted on the housing on the operation unit side, the sound from the gap of the fitting portion formed near the slot for inserting a memory card for recording images and melody data and the earphone jack which has begun to spread recently. Leakage can be prevented.
[Brief description of the drawings]
FIG. 1 is an external view showing the front, side, and back of a mobile phone having a folding structure to which the present invention is applied.
FIG. 2 is a schematic exploded view of the upper housing 3 showing the embodiment of the present invention.
FIG. 3 is an external view showing the front, side, and back of a speaker 5 mounted in the embodiment.
FIG. 4 is a sectional view taken along line AA ′ of the speaker in FIG. 3;
FIG. 5 is a perspective view of the speaker of FIG. 3 as viewed from the rear side.
FIG. 6 is a rear external view of the upper housing 3 in the present embodiment.
FIG. 7 is a cross-sectional view of the upper case 3 in the vertical direction (line AA ′) in the present embodiment.
FIG. 8 is a cross-sectional view of the upper housing 3 in the embodiment in a lateral direction (line BB ′).
FIG. 9 is a front view and a cross-sectional view illustrating a configuration example of a cushion 37 in the present embodiment.
FIG. 10 is a rear external view of a lower housing showing another embodiment of the present invention.
FIG. 11 is a schematic perspective view showing an arrangement of an internal configuration according to another embodiment of the present invention.
Reference Signs List 1 mobile phone 2 lower housing 3 upper housing 4 hinge 5 speaker 6 antenna 20, 33 circuit board 21 lower front case 22 lower back case 26 earphone jack 27 memory card slot 28 two-pole connector 28
29, 37 Cushion member 31 Upper front case 32 Upper back case 34, 41 Display unit 35 Receiver 36 Speaker contact connector 38 Speaker sound hole 39 Rib 51 Speaker body 52 Cushion with mesh 53 Electric signal input terminal 54 Frame 55 Brake hole 56 Yoke 57 Exhaust direction control rib 58 Locking claw 59 Protector 61 Permanent magnet 62 Top plate 63 Vibration plate 64 Voice coil

Claims (11)

In a portable electronic device incorporating a dynamic type speaker having a frame having an exhaust braking hole for supporting the periphery of a diaphragm made of a yoke and a thin film constituting a magnetic circuit and braking exhaust from the back of the speaker,
The speaker is fixed around a sound emission hole on the inner surface of the housing of the portable electronic device via an annular cushion provided around the front surface of the speaker, and is provided around the speaker rear surface side of the frame. A portable electronic device, wherein an exhaust direction from the exhaust braking hole is adjusted by contacting an exhaust direction control rib with a cushion member arranged on a circuit board in the portable electronic device housing. Speaker fixing structure in equipment. The exhaust direction control rib is provided on the rear side of the speaker of the frame so as to block a gap which is provided near the speaker mounted inside the portable electronic device casing and communicates with the outside of the casing and the exhaust braking hole. The speaker fixing structure according to claim 1, wherein the speaker fixing structure is provided at least in a range of 180 degrees around the speaker. An annular speaker fixing rib that is in contact with an annular cushion provided around the front surface of the speaker is provided around the sound emission hole on the inner surface of the portable electronic device housing, and a diaphragm made of the thin film film is provided. The portable electronic device according to claim 1, wherein a front air chamber is formed on a front surface of the speaker by the annular cushion, the annular speaker fixing rib, and the inner surface of the housing. Speaker fixing structure. 2. The speaker according to claim 1, wherein the speaker is fixed by engaging a fixing fitting claw provided on the frame with a speaker fixing claw provided on an inner surface of the portable electronic device housing. 4. A speaker fixing structure in the portable electronic device according to any one of items 3 to 3. The portable electronic device is a mobile phone, and the speaker is fixed to an inner surface of the housing as a speaker for sounding a ringtone or a melody, and the exhaust direction control rib and a cushion disposed on the circuit board. The mobile phone according to any one of claims 1 to 4, wherein the mobile phone is formed as a wall separating the speaker rear braking hole and a gap existing in the housing and communicating with the outside of the housing. Speaker fixing structure in portable electronic equipment. In the portable electronic device, a first housing having a receiving unit and a display unit and a second housing having a transmitting unit and a key input unit are rotatably connected by a hinge, and the hinge is used as an axis. A mobile phone that is configured to be rotatable and foldable with respect to each other, wherein the speaker is fixed to an inner surface of a rear side case of the first housing as a speaker for sounding a ringtone or a melody, and the exhaust direction control is performed. The portable electronic device according to any one of claims 1 to 4, wherein a wall separating the speaker rear braking hole and the hinge is formed by a rib for use and a cushion material disposed on the circuit board. Speaker fixing structure in equipment. A speaker mounted on a portable electronic device,
A frame supporting an outer periphery of a diaphragm made of a thin film and a yoke forming a magnetic circuit, and having an exhaust braking hole for braking exhaust from the back of the speaker, and the portable electronic device housing provided on the front side of the speaker An annular cushion abutting around the sound emitting hole on the inner surface of the body, and a cushioning member provided around the speaker rear side of the frame and arranged on a circuit board in the portable electronic device housing to contact the cushion. A dynamic speaker comprising an exhaust direction control rib for adjusting an exhaust direction from an exhaust brake hole. The dynamic speaker according to claim 7, wherein the exhaust direction control rib is provided in a range of at least 180 degrees around the back side of the speaker of the frame. 9. The dynamic speaker according to claim 7, wherein the exhaust direction control rib is formed integrally with the frame. On the front side of the speaker, a protector having a sound emission hole that protects the diaphragm from external stress is provided, and the annular cushion is attached around the protector and has a nylon The dynamic speaker according to any one of claims 7 to 9, wherein a mesh made of aluminum is attached. 10. The frame according to claim 7, wherein a fixing fitting claw that engages with a speaker fixing claw provided on an inner surface of the portable electronic device housing is integrally formed. The dynamic type speaker according to 1.

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