JP7399580B2 - speaker - Google Patents

Description

The present invention relates to a speaker that generates sound pressure by vibrating a vibrating sheet having a coil provided on the sheet surface.

Patent Document 1 describes an invention relating to a speaker equipped with a sheet-like diaphragm.
The diaphragm is curved, and a voice coil is formed in the shape of a planar coil by etching at one end of the diaphragm. The magnetic circuit portion has a magnetic gap traversed by the magnetic field. The one end of the diaphragm is sandwiched between elastic members made of rubber or the like from both sides in the plate thickness direction, and the elastic member sandwiching the one end is inserted into the magnetic gap together with the diaphragm, and the voice coil is inserted into the magnetic gap. positioned. Further, the other end of the diaphragm is attached to the frame via another elastic member.

In the speaker described in Patent Document 1, since the elastic member easily elastically deforms within the magnetic gap, the voice coil can be disposed in a movable state within the magnetic gap.

JP2009-278523A

In the speaker described in Patent Document 1, an elastic member that sandwiches one end of the diaphragm is inserted into a magnetic gap of the magnetic circuit, so that the voice coil provided at one end of the diaphragm is connected to the magnetic circuit. This has the advantage of preventing damage caused by rubbing against the yoke. However, since the elastic member is inserted into the magnetic gap, the inner width dimension (gap length dimension) of the magnetic gap increases, and the magnetic drive efficiency of the magnetic circuit section decreases. Additionally, when one end of the diaphragm is vibrated within the magnetic gap, a shearing resistance force is generated in the elastic member, so the resistance force when vibrating the diaphragm increases, and the diaphragm can generate sufficient sound pressure. An excessive voice current is required for this to occur.

The present invention solves the above-mentioned conventional problems, and provides a speaker in which the inner width dimension (gap length dimension) of the magnetic gap can be made as small as possible, and in which the coil can be positioned within the narrow gap. It is an object.

The present invention provides a speaker including a vibrating sheet formed of a flexible sheet, a voice coil provided on the sheet surface of the vibrating sheet, and a magnetic field generating section that applies a magnetic field to the voice coil.
The voice coil is formed with a driving energizing path whose current direction is in a direction intersecting the vibration direction of the vibrating sheet, and the driving energizing path is located within the magnetic gap of the magnetic field generating section,
A reinforcing member is fixed to the vibrating sheet outside the magnetic gap, the reinforcing member is fixed to the sheet surface at least at a position aligned with the drive current path in the vibration direction, and a support opposite to the reinforcing member is fixed to the seat surface. The present invention is characterized in that an elastic support member that is elastically deformed in the vibration direction of the vibrating sheet is provided between the body and the reinforcing member.

In the speaker of the present invention, the reinforcing member includes a pair of reinforcing fixing parts that are located on both sides of the voice coil in the vibration direction and are fixed to the sheet surface at positions that are aligned with the drive current path, and the magnetic It is preferable that a connecting reinforcing part that connects the pair of reinforcing fixing parts on the outside of the gap is integrally formed.

Further, in the speaker of the present invention, it is preferable that the reinforcing member has a frame shape in which the pair of reinforcing fixing portions and the pair of connecting reinforcing portions are continuously and integrally formed.

In the speaker of the present invention, it is preferable that the elastic support member has a higher elastic coefficient in the inner width direction of the magnetic gap than the elastic coefficient in the vibration direction of the vibrating sheet.

In the speaker of the present invention, for example, the elastic support member is a leaf spring whose thickness direction is oriented toward the vibration direction and whose width direction is oriented toward the inner width direction.

The speaker of the present invention is provided with a reinforcing member fixed to the vibrating sheet at a position outside the magnetic gap and in line with the drive current path of the voice coil. Therefore, the vibrating sheet becomes difficult to bend within the magnetic gap, and even if the internal width of the magnetic gap (gap length) is short, problems such as damage caused by the voice coil rubbing against the yoke that constitutes the magnetic field generation section can be prevented. Cheap.

Since the speaker of the present invention is provided with the elastic support member that supports the reinforcing member, it is possible to position the voice coil within the magnetic gap. In particular, if the elastic support member has a higher elastic coefficient in the inner width direction of the magnetic gap than the elastic coefficient in the vibration direction of the vibration sheet, the voice coil can be prevented from moving in the inner width direction within the magnetic gap. positioning, and the resistance force when the diaphragm vibrates can be reduced.

A sectional view showing a speaker according to an embodiment of the present invention, A partial perspective view showing the structure of the magnetic field generating part of the speaker shown in FIG. A cross-sectional perspective view of the magnetic field generation section shown in FIG. 2, An exploded perspective view showing the structure of the first sounding part of the speaker shown in FIG. A front view showing a vibration sheet, a reinforcing member, and an elastic support member provided in the speaker shown in FIG. A front view corresponding to FIG. 5 showing a modification of the present invention, A front view corresponding to FIG. 5 showing a modification of the present invention,

In the speaker 1 according to the embodiment of the present invention, the Y1-Y2 direction is the vertical direction, the X1-X2 direction is the horizontal direction, and the Z1-Z2 direction is the vertical direction.
The speaker 1 of the embodiment shown in FIG. 1 is configured by integrating a first sounding section 10 located on the Y1 side and a second sounding section 20 located on the Y2 side. The first sounding section 10 and the second sounding section 20 have a symmetrical shape in the vertical direction (Y1-Y2 direction). The first sounding section 10 and the second sounding section 20 have the same structure; the first sounding section 10 has a vibrating sheet 11 and the second sounding section 20 has a vibrating sheet 21. The vibrating sheet 11 of the first sounding section 10 and the vibrating sheet 21 of the second sounding section 20 are vibrated at the same frequency. Alternatively, the vibrating sheet 11 and the vibrating sheet 21 are vibrated in different frequency bands. Furthermore, it is also possible to generate stereo sound by vibrating the vibrating sheet 11 and the vibrating sheet 21 with mutually different voice currents.

FIG. 4 shows the structure of the first sounding section 10. Below, the structure and operation of the first sounding section 10 will be mainly explained.
As shown in FIG. 4, the first sounding section 10 has a support 12. As shown in FIG. The support body 12 is a support case or a support base. The support body 12 has a bottom wall portion 12a and a vertical wall portion 12b integrally formed. Side wall portions 13, 13 facing each other in the left-right direction (X1-X2 direction) are fixed to the support body 12. The side wall portions 13, 13 also constitute a part of the support body 12. A support rib 12c protruding in the Y2 direction is integrally formed on the upper part of the vertical wall portion 12b of the support body 12. The end portion of the bottom wall portion 12a facing the Y2 side is a thick portion 12d, and the end surface of the thick portion 12d facing the Y2 direction is a fixing surface 12e. An opening 12f, which is a circular hole, is formed in the center of the vertical wall 12b of the support 12.

As shown in FIG. 1, the second sounding section 20 is also provided with a support 22. Similar to the support body 12 of the first sounding section 10, the support body 22 has a bottom wall portion 22a, a vertical wall portion 22b, a support rib 22c, a thick wall portion 22d, a fixing surface 22e, and an opening portion 22f that are integrally formed. ing. Further, side wall portions 23, 23 are fixed to both sides of the support body 22 in the X1-X2 direction. It is preferable that both the support body 12 of the first sound generation section 10 and the support body 22 of the second sound generation section 20 are formed of a non-magnetic material.

As shown in FIGS. 2 and 3, between the fixed surface 12e formed on the support body 12 of the first sound generation section 10 and the fixed surface 22e formed on the support body 22 of the second sound generation section 20, A pair of side support members 15 are sandwiched and fixed. The side support member 15 is made of a non-magnetic material and functions as a part of the support body 12 and the support body 22. A pair of side support members 15 are spaced apart from each other in the X1-X2 direction, and each end face on the Y1 side is fixed to the fixed surface 12e of the support body 12, and the end face on the Y2 side is fixed to the fixed face 22e of the support body 22. has been done.

As shown in FIGS. 2 and 3, between the fixed surface 12e formed on the support body 12 of the first sound generation section 10 and the fixed surface 22e formed on the support body 22 of the second sound generation section 20, Further, a magnetic field generating section 30 is provided in a space formed between a pair of side support members 15, 15 located apart in the X1-X2 direction.

As shown in FIGS. 2 and 3, the magnetic field generating section 30 includes a first opposing yoke 31 and a second opposing yoke 32 made of a magnetic material. As shown in FIG. 1, the first opposing yoke 31 is fixed to the fixing surface 12e of the support 12 provided on the first sounding section 10, and the second opposing yoke 32 is fixed on the fixing surface 12e of the support 12 provided on the first sounding section 10. It is fixed to the fixed surface 22e of the support body 22. In the magnetic field generating section 30 , a magnet assembly 33 is located between the first opposing yoke 31 and the second opposing yoke 32 . As shown in FIG. 4, the magnet assembly 33 includes a lower yoke 34 made of a magnetic material, a stacked magnet 35 thereon, and an upper yoke 36 made of a magnetic material positioned above the lower yoke 34. It is made up of.

As shown in FIGS. 3 and 4, a pair of spacers 37 are provided between the first opposing yoke 31 and the magnet assembly 33 with an interval in the X1-X2 direction. Spacer 37 is made of nonmagnetic material. The left and right spacers 37 are integrally formed with thin plate portions 37a extending in directions facing each other. Each spacer 3 is fixed to both the first opposing yoke 31 and the magnet assembly 33, and the thin plate portion 37a is interposed between the first opposing yoke 31 and the magnet assembly 33. The first opposing yoke 31 and the magnet assembly 33 are fixed to each other by a pair of spacers 37 . Further, the distance between the first opposing yoke 31 and the magnet assembly 33 is determined by the thickness of the thin plate portion 37a, and as shown in FIGS. , a magnetic gap G1 with a minute interval is formed.

As shown in FIG. 2, the magnetic field generating section 30 is provided with spacers 38 on the X1 side and the X2 side for connecting the second opposing yoke 32 and the magnet assembly 33. This spacer 38 also has a thin plate portion 38a formed therein. This thin plate portion 38a is sandwiched between the second opposing yoke 32 and the magnet assembly 33, and the distance between the second opposing yoke 32 and the magnet assembly 33 is determined, as shown in FIGS. 1 and 3. , a small magnetic gap G2 is formed between the second opposing yoke 32 and the magnet assembly 33.

As shown in FIGS. 1 and 4, a vibration sheet 11 is arranged between a side wall 13 on the X1 side and a side wall 13 on the X2 side, which are part of the support 12 of the first sounding section 10. . The vibrating sheet 11 has a rectangular shape with the V1-V2 direction being the vertical direction and the longitudinal direction. Further, the vibration direction of the vibrating sheet 11 is the V1-V2 direction. The vibrating sheet 11 has a fixed end 11a at the upper end (in the V1 direction) in the vertical direction, and a drive end 11b at the lower end (in the V2 direction) in the vertical direction. The fixed side end 11a of the vibrating sheet 11 is bonded and fixed to the upper surface of a support rib 12c provided at the Z1 side end of the support body 12. The vibrating sheet 11 has a planar shape in a free state, but is curved so that the vertical direction (V1-V2 direction) is the direction of curvature, and the driving side end 11b is inserted into the magnetic gap G1. There is.

The vibrating sheet 11 is a flexible sheet having elasticity, and is basically constructed of a resin sheet made of a synthetic resin material. The vibrating sheet 11 is composed of a so-called flexible circuit board (FPC) in which a copper foil layer is laminated as a metal film on the surface of a sheet base material (base film) formed of polyimide resin or PET resin. The vibrating sheet 11 is provided with a copper foil layer over almost the entire area except at least the fixed end 11a and the driving end 11b. Alternatively, a copper foil layer is provided over the entire area except for the drive side end portion 11b. By providing the copper foil layer, the rigidity of the vibrating sheet 11 can be increased and appropriate elasticity can be provided.

As shown in FIGS. 4 and 5, a voice coil 40 is provided at the drive side end 11b of the vibrating sheet 11 along the sheet surface. The voice coil 40 has a planar winding shape in which a conductor layer is wound around the sheet surface of the vibrating sheet 11. The plane-wound voice coil 40 is wound multiple times around an imaginary center line extending in the Y1-Y2 direction perpendicular to the sheet surface. The voice coil 40 has an upper drive current path 41 and a lower drive current path 42 . The current direction I of the upper drive energization path 41 and the lower drive energization path 42 is perpendicular to the vibration direction (V1-V2 direction) of the vibrating sheet 11. As shown in FIG. 1, in the magnetic gap G1, the upper drive current path 41 is located between the first opposing yoke 31 and the upper yoke 36, and the lower drive current path 42 is located between the first opposing yoke 31 and the lower yoke. It is located between the yoke 34 and the yoke 34.

The voice coil 40 is a coil layer formed by etching a copper foil layer provided on the surface of a sheet base material. As shown in FIG. 5, a terminal portion 43a electrically connected to one end of the conductor layer constituting the coil layer and a terminal portion 43b electrically connected to the other end of the conductor layer are formed on the sheet surface. Note that the voice coil 40 may be configured by making a planar winding coil structure in advance by winding a thin conducting wire in a planar manner and adhering this to the sheet surface of the vibrating sheet 11. The voice coil 40 is provided on the sheet surface facing the Y1 side at the driving side end 11b of the vibrating sheet 11. Alternatively, the voice coil 40 may be formed on the sheet surface facing the Y2 side at the drive side end portion 11b. Alternatively, it may be formed on both the sheet surface facing the Y1 side and the sheet surface facing the Y2 side.

As shown in FIGS. 1 and 2, at the driving side end 11b of the vibrating sheet 11, a reinforcing member 50 is fixed to the sheet surface facing the Y1 side. The reinforcing member 50 is made of a material such as a synthetic resin material or a non-magnetic metal plate, which has higher bending rigidity in the Y1-Y2 direction than the bending rigidity of the vibrating sheet 11 in the same direction.

As shown in FIGS. 4 and 5, the reinforcing member 50 has a frame shape in which a pair of reinforcing fixing parts 51a, 51b and a pair of connecting reinforcing parts 52, 52 are continuously and integrally formed. The pair of reinforcing fixing parts 51a and 51b are fixed at positions sandwiching the voice coil 40 on both sides in the vibration direction (V1-V2 direction). The reinforcing fixing part 51a is fixed to the seat surface at a position lined up with the upper drive energizing path 41 of the voice coil 40 on the V1 side, and the reinforcing fixing part 51b is fixed to the seat surface at a position lined up with the lower drive energizing path 42 on the V2 side. There is. The reinforcing fixing portion 51a and the reinforcing fixing portion 51b have a larger length in the current direction I than the upper drive energizing path 41 and the lower driving energizing path 42, and the upper driving energizing path 41 and the lower driving energizing path 41 of the voice coil 40 are , the entire length in the current direction I is reinforced with reinforcing fixing parts 51a and 51b.

The reinforcing fixing parts 51a and 51b of the reinforcing member 50 protrude from the vibrating sheet 11 on both sides in the X1-X2 direction, and at a position away from the vibrating sheet 11, both ends of the reinforcing fixing part 51a and both ends of the reinforcing fixing part 51b are connected. The parts are connected by connection reinforcing parts 52, 52. Note that in the case of the vibrating sheet 11 having a wide width in the X1-X2 direction, the connection reinforcing parts 52, 52 may be fixed to the sheet surface of the vibrating sheet 11. In this case, the pair of connection reinforcing parts 52, 52 are fixed to the sheet surface at positions sandwiching the upper drive energization path 41 and the lower drive energization path 41 of the voice coil 40 on both sides in the current direction I.

As shown in FIG. 2, an elastic support member 55 is provided between the side support members 15, 15 functioning as part of the supports 12, 22 and the reinforcing member 50. As also shown in FIG. 3, the elastic supporting member 55 has a supporting side fixed end 55a inserted into a slit formed in the side supporting member 15 and fixed therein, and a reinforcing side fixed end 55b sandwiching the reinforcing member 50. It is fixed to the reinforcing member 50 in such a manner as to

The elastic support member 55 is a metal leaf spring, and is curved with a curvature in the X1-X2 direction. The plate spring has its plate thickness direction oriented in the vibration direction of the vibrating sheet 11 (V1-V2 direction), and its plate width direction oriented in the inner width direction (Y1-Y2) of the magnetic gap G1. That is, the elastic support member 55 has a higher elastic modulus in the inner width direction of the magnetic gap G1 (Y1-Y2 direction) than in the vibration direction of the vibrating sheet 11 (V1-V2 direction). Therefore, although the reinforcing member 50 and the vibrating sheet 11 can vibrate in the vibration direction (V1-V2 direction), they are difficult to move in the inner width direction of the magnetic gap G1 (Y1-Y2 direction). Furthermore, the elastic force of the elastic support member 55 positions the center of the voice coil 40 at the center in the Z1-Z2 direction within the magnetic gap G1. Note that the elastic support member 55 may be a leaf spring made of resin or the like.

As shown in FIG. 5, four elastic support members 55 are provided, and the four corners of the rectangular frame-shaped reinforcing member 50 are supported by the elastic support members 55. The reinforcing fixed end 55b of each elastic support member 55 is fixed to the reinforcing member 50 at an angle θ with respect to the X1-X2 direction. θ is preferably 30 degrees or more and less than 60 degrees, for example 45 degrees. The reinforcing member 50 is supported by four elastic supporting members 55, and each reinforcing fixed end 55b is oriented diagonally, so that the reinforcing member 50 is positioned parallel to the XZ plane. Therefore, the voice coil 40 is also positioned in the magnetic gap G1 in a state parallel to the XZ plane.

The second sounding section 20 has a symmetrical shape with the first sounding section 10 in the X1-X2 direction. The structures of the vibrating sheet 21 and voice coil 40 provided in the second sounding section 20 are the same as those of the vibrating sheet 11 and voice coil 40 provided in the first sounding section 10. Further, a reinforcing member 50 is fixed to the sheet surface facing the Y2 side of the vibrating seat 21, and an elastic supporting member 55 is provided between the side supporting members 15, 15 and the reinforcing member 50.

Next, the sound generation operation of the speaker 1 will be explained.
A voice current is applied to the voice coil 40 through terminal portions 43a and 43b provided at the drive side end portion 11b of the vibrating sheet 11 shown in FIG. The voice current is also applied to the voice coil 40 provided on the vibrating sheet 21 of the second sounding section 20 . The vibrating sheet 11 of the first sounding section 10 and the vibrating sheet 21 of the second sounding section 20 are vibrated by the respective voice currents. The details of the operation of the vibrating sheet 11 of the first sounding section 10 will be described below, but the operation of the vibrating sheet 21 of the second sounding section 20 is also the same.

When a voice current is applied to the voice coil 40 provided on the vibrating sheet 11 of the first sounding section 10, in the upper drive energization path 41 and the lower drive energization path 42, the currents are directed in opposite directions to each other in the I direction, and the magnetic gap The vibration sheet 11 is given vibration in the vertical direction (V1-V2 direction) along the sheet surface by the electromagnetic force caused by the magnetic flux that crosses the upper drive energization path 41 and the lower drive energization path 42 in opposite directions in G1. .

The vibrating sheet 11 deforms in a undulating manner in the V1-V2 direction, and sound pressure is generated from the vibrating sheet 11 in the Z1 direction and the Y2 direction. Sound pressure is also generated in the Y1 direction from the vibrating sheet 11, but the space located on the Y1 side of the vibrating sheet 11 is partitioned on the left and right by side walls 13, 13, and is further divided by a bottom wall 12a and a vertical wall 12b. It is also separated by. Therefore, the sound pressure applied from the vibrating sheet 11 in the Z1 direction and the Y2 direction and the sound pressure applied to the space on the Y1 side are less likely to interfere with each other. In addition, since the opening 12f is formed in the vertical wall 12b, the space partitioned by the side walls 13, 13, the bottom wall 12a, and the vertical wall 12b is not sealed, and the vibration sheet 11 is sealed. It is possible to avoid the space exerting a large resistance force.

As shown in FIG. 5, at the drive side end 11b of the vibrating sheet 11, a reinforcing fixing portion 51a of the reinforcing member 50 is fixed at a position aligned with the upper drive energization path 41 of the voice coil 40, and the reinforcement fixing portion 51a is fixed to the lower drive energization path 42 of the voice coil 40. Reinforcement fixing portions 51b are fixed in the juxtaposed positions, and the reinforcing fixation portions 51a and 51b are connected by a connection reinforcing portion 52. That is, a frame-shaped reinforcing member 50 is fixed to the vibrating sheet 11 so as to surround the voice coil 40 . Therefore, when an electromagnetic force acts on the voice coil 40 and vibration in the V1-V2 direction is applied to the vibrating sheet 11, the drive side end 11b of the vibrating sheet 11 and the voice coil 40 can be prevented from bending, and the voice coil 40 can be prevented from bending. The coil 40 can be positioned within the magnetic gap G1 while always maintaining a flat state. Therefore, it is easy to prevent phenomena such as the voice coil 40 rubbing against the first opposing yoke 31 due to its deformation.

Further, the reinforcing member 50 is arranged outside the magnetic gap G1 so as not to come into contact with the first opposing yoke 31 and the magnet assembly 33. Therefore, the distance between the first opposing yoke 31 and the magnet assembly 33 can be brought closer, and the inner width dimension (gap length dimension) in the Y1-Y2 direction of the magnetic gap G1 can be reduced. By reducing the inner width of the magnetic gap G1, the magnetic flux density that crosses the voice coil 40 can be increased, making it possible to drive the vibrating sheet 11 with low power.

Further, since the reinforcing member 50 is supported by the side supporting members 15, 15 via the elastic supporting members 55, 55, the voice coil 40 surrounded by the reinforcing member 50 can be positioned within the magnetic gap G1. I can do it. The elastic support members 55, 55 have a higher elastic modulus (flexural modulus) in the inner width direction of the magnetic gap G1 (Y1-Y2 direction) than in the vibration direction (V1-V2 direction). Therefore, the drive side end 11b of the vibrating sheet 11 and the voice coil 40 are difficult to move in the Y1-Y2 direction within the magnetic gap G1, and even if the inner width dimension of the magnetic gap G1 in the Y1-Y2 direction is reduced. , the phenomenon that the voice coil 40 hits or rubs against the first opposing yoke 31 is less likely to occur.

Therefore, there is no need to interpose a magnetic fluid, an elastic body, or the like in the magnetic gap G1 to restrict the movement of the voice coil 40 in the Y1-Y2 direction, as in the conventional case. Furthermore, even if a magnetic fluid or the like is interposed in the magnetic gap G1, it is not necessary to use a highly viscous fluid. Therefore, even if the inner width of the magnetic gap G1 is reduced, the resistance force against movement of the voice coil 40 in the vibration direction (V1-V2 direction) can also be reduced.

6 and 7 show modified examples of the vibrating sheet 11 used in the speaker 1 of the present invention.
In the modification shown in FIG. 6, the reinforcing fixing part 51a on the Z1 side of the reinforcing member 50 is continuous in the width direction (X1-X2 direction) of the vibrating sheet 11, but the reinforcing fixing part 53 on the Z2 side is continuous in the width direction (X1-X2 direction). It's broken. In the modification shown in FIG. 7, the reinforcing fixing part 54 on the Z1 side and the reinforcing fixing part 53 on the Z2 side of the reinforcing member 50 are both interrupted in the middle.

In these modified examples as well, the reinforcing member 50 is supported by the elastic support member 55, and the elastic coefficient of the elastic support member 55 is higher in the inner width direction (Y1-Y2 direction) of the magnetic gap G1 than in the vibration direction (V1-V2 direction). ) has a high elastic modulus, it is possible to achieve the effect of positioning the drive side end portion 11b of the vibrating sheet 11 and the voice coil 40 within the magnetic gap G1 having a small inner width dimension.

The operation and effect of the vibrating sheet 11 are the same for the vibrating sheet 21 of the second sounding section 20. Further, the vibrating sheets 11 and 21 may be curved semicircularly, slightly curved with a large curvature, or may be located in a substantially flat state.

1 Speaker 10 First sounding section 11 Vibration sheet 12 Support body 15 Side support member 20 which becomes a part of the support body Second sounding section 21 Vibration sheet 22 Support body 30 Magnetic field generation section 31 First opposing yoke 32 Second opposing yoke 33 Magnet assembly 34 Lower yoke 35 Magnet 36 Upper yoke 40 Voice coil 41 Upper drive energization path 42 Lower drive energization path 50 Reinforcement members 51a, 51b Reinforcement fixing portion 52 Connection reinforcement portion 55 Elastic support members G1, G2 Magnetic gap

Claims (5)

A speaker including a vibrating sheet formed of a flexible sheet, a voice coil provided on the sheet surface of the vibrating sheet, and a magnetic field generating section that applies a magnetic field to the voice coil,
The voice coil is formed with a driving energizing path whose current direction is in a direction intersecting the vibration direction of the vibrating sheet, and the driving energizing path is located within the magnetic gap of the magnetic field generating section,
A reinforcing member is fixed to the vibrating sheet outside the magnetic gap, the reinforcing member is fixed to the sheet surface at least at a position aligned with the drive current path in the vibration direction, and a support opposite to the reinforcing member is fixed to the seat surface. A speaker characterized in that an elastic support member that is elastically deformed in the vibration direction of the vibrating sheet is provided between the body and the reinforcing member. The reinforcing member includes a pair of reinforcing fixing parts that are located on both sides of the voice coil in the vibration direction and are each fixed to the sheet surface at a position that is aligned with the drive current path, and a pair of reinforcing fixing parts that are fixed to the sheet surface at positions that are aligned with the drive energization path, and a pair of reinforcing fixing parts that are arranged on both sides of the voice coil in the vibration direction. The speaker according to claim 1, wherein a connecting reinforcing portion that connects the reinforcing fixing portion is integrally formed. 3. The speaker according to claim 2, wherein the reinforcing member has a frame shape in which the pair of reinforcing fixing portions and the pair of connecting reinforcing portions are continuously and integrally formed. 4. The speaker according to claim 1, wherein the elastic support member has a higher elastic coefficient in the inner width direction of the magnetic gap than the elastic coefficient in the vibration direction of the vibration sheet. 5. The speaker according to claim 4, wherein the elastic support member is a leaf spring whose thickness direction is oriented toward the vibration direction and whose width direction is oriented toward the inner width direction.

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