TW202112147A - Speaker unit and speaker - Google Patents

Abstract

[Problem] The present invention is directed to a higher-performance and higher-quality curved diaphragm speaker system without deficiency of performance for both a hearing-impaired person and a normal hearing person.

[Solution] A speaker unit 10 according to the present invention includes at least a first diaphragm 1 having a corn shape, a second diaphragm 2 having a curved sheet shape, and a driver unit 3 that drives both the first diaphragm and the second diaphragm. A small diameter side la of the first diaphragm and one end side 2a of the second diaphragm are coupled to the driver unit. When the speaker unit is mounted in a housing 50 to be a speaker 100, a large diameter side 1b of the first diaphragm is coupled to a support plate 511 of a support member 51 that is a part of the housing, and the other end side 2b of the second diaphragm is coupled to a support leg 513 of the support member that is a part of the housing.

Description

Speaker unit and speaker

The present invention relates to a loudspeaker and a loudspeaker unit using a bending vibration plate. In detail, it relates to a method that enables the hearing impaired to talk to the normal hearing person without wearing a hearing aid, and to hear the other party's voice, and the playback frequency band is expanded A higher performance composite flexural vibration plate speaker system.

In recent years, people with hearing impairment in the elderly caused by aging, organic hearing impairment in the outer or middle ear, inner ear, cochlear nerve, and functional hearing impairment caused by stress have gradually increased. Increased, the number of hearing impaired people in Japan is estimated to be 20 million. When there is a hearing impairment, it is not only impossible to hear the sound, but also difficult to distinguish clearly even if it is an audible sound. Therefore, there are situations where you can respond without fully understanding the content of the conversation, causing the other party to misunderstand, or repeating the inquiry several times during the conversation, which prevents the conversation from proceeding smoothly.

In addition, hearing impairment will cause the inability to communicate smoothly, and unconsciously will find it troublesome to speak, which will reduce the chance of contact with people, or the phenomenon of becoming a cocoon without going out, and causing problems such as social isolation and alienation. The fear.

As a means to reduce the inconvenience of such hearing impairment, hearing aids are generally used. In addition, when watching TV, you can use an FM transmitter, which is connected to the earphone jack of the TV to send the sound in the form of FM waves, and receive it with a handheld FM radio to obtain the sound of the TV.

However, hearing aids are not preferred due to reasons such as "trouble" and "shameful wearing" and lead to infrequent use. They are usually used as a last resort. In addition, hearing aids often receive noise, which can sometimes cause stress. On the other hand, when using an FM transmitter, it is necessary to prepare an FM transmitter and set the FM transmitter whenever watching TV, which is very complicated. In addition, because the FM transmitter is connected to the earphone jack, the output destination of the sound is switched, and there is a problem that the hearing impaired and the hearing impaired cannot watch TV smoothly together.

Therefore, although not for all hearing impaired people, as a speaker that produces sounds that can be heard by the hearing impaired, the applicant has proposed a speaker that is a frame with a hollow structure, a drive unit housed in the frame, and a configuration The bending vibration plate on the surface of the frame body transmits the vibration of the drive unit to the edge (surface) of the bending vibration plate and emits sound (for example, refer to Patent Documents 1 and 2).

The use of such a flexural vibration plate speaker (hereinafter referred to as "flexural vibration plate speaker") allows the hearing impaired to listen without wearing a hearing aid, and the normal hearing person can also listen without discomfort. In addition, the flexural vibration plate speakers of the invention described in Patent Documents 1 and 2 have been confirmed in subsequent empirical experiments that they can be heard clearly not only in the vicinity but also in the distance. In other words, there is no popping sound when the volume is too high, and it can be listened to without being too noisy even in the vicinity.

Although the basic performance of the flexural vibration plate speaker has been confirmed to be a practical level and a manufacturable level, it is required to expand the playback frequency band, especially the bass band below 400~500Hz (hereinafter referred to as "low Domain") to improve the sound quality of the playback performance.

Here, the flexural vibration plate speaker generally uses the following method: the flexural vibration plate is driven by a movable coil, which is a so-called voice coil, to generate sound. In this technique, to increase the playback capability on the low-range side, the amplitude (movement) of the voice coil corresponding to the capability needs to be increased, and the corresponding vibration plate and structure and power increase are required.

However, if the amplitude of the voice coil is forcibly increased in order to increase the playback capability on the low-range side, the bending vibration plate itself will generate abnormal noise. Therefore, to perform low-range playback equivalent to that of conventional speakers, the length of the flexural vibration plate must be increased, and the area must be enlarged. Its size is no longer a practical size.

Therefore, in order to increase the playback capability on the low-range side, a dynamic speaker unit with a cone-shaped diaphragm is further installed in the frame of the speaker unit equipped with a bending vibration plate, so that the two speaker units are driven and respectively emit sound. Thereby, the sound quality of the bending vibration plate on the low-range side is corrected by the sound of the cone-shaped vibration plate, and a composite full-range speaker using the bending vibration plate and the cone-shaped vibration plate can be used.

However, in such a composite speaker system, although the frame housing the speaker unit can be shared, two speaker units (flexural vibration plate speaker unit and dynamic speaker unit) corresponding to the playback frequency band are required, so the cost is relatively high. .

In addition, in order to ensure a better sound pressure feeling emitted by the two speakers, the sound emission direction of the flexural vibration plate and the cone-shaped vibration plate are the same, and each speaker unit is installed relative to the frame. Setting the area will increase the size of the frame. On the other hand, if the sound emission direction of the bending vibration plate and the cone-shaped vibration plate are different in consideration of the installation area, one of the speakers cannot obtain a sufficient sound pressure feeling.

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent No. 5668233

Patent Document 2: Japanese Patent Laid-Open No. 2016-140060

The present invention has been completed in view of the above circumstances, and it provides a speaker, which is used in a composite speaker system using a bending vibration plate. The sound quality is improved by expanding the playback frequency band, and the cost is reduced. Ensuring a better sound pressure feeling under the huge situation.

The first speaker unit of the present invention is characterized in that it includes at least a first diaphragm formed in a cone shape, a sheet-shaped second diaphragm having a curved single curved surface, and the first diaphragm and the second diaphragm are driven together. The driver unit of the vibrating plate is connected with the small diameter side of the first vibrating plate and one end side of the second vibrating plate.

In addition, the second speaker unit of the present invention is characterized by including at least a first diaphragm formed in a cone shape, a second diaphragm formed in a curved sheet shape, and a driver for driving the first diaphragm and the second diaphragm together. Unit, and a supporting member equipped with the first vibrating plate, the second vibrating plate, and the driver unit. The supporting member is formed by a supporting plate formed in a flat plate shape, a convex portion protruding from one surface of the supporting plate, and a supporting member disposed on the supporting plate. The protruding part is composed of wide eaves-like legs, the small diameter side of the first vibration plate and one end side of the second vibration plate are connected to the driver unit, and the large diameter side of the first vibration plate is connected to the support plate of the support member , The other end of the second vibrating plate is connected with the leg of the supporting member.

In the speaker unit of the present invention, the connection structure of the second diaphragm to the driver unit is not particularly limited. Therefore, one end side of the second vibration plate is directly or indirectly installed on the driver unit. Specifically, it is preferable that one end side of the second vibrating plate is inserted into and connected to the cutout provided at the front end of the bobbin of the driver unit.

Furthermore, it is preferable that one end of the second vibration plate is connected to a center cap (also referred to as a "dust cap" or a "chamber") or a sub-cone installed at the front end of the bobbin of the driver unit. At this time, it is also possible that one end of the second vibrating plate is inserted through and connected to the notch provided in the center of the center cap.

Furthermore, in the speaker unit of the present invention, it is preferable that the second vibration plate is mounted on the driver unit by mounting a reinforcing plate on one surface of one end side. Furthermore, in the speaker unit of the present invention, it is preferable that one end of the second diaphragm is connected to the surface of the first diaphragm through the side edge of the reinforcing plate.

Furthermore, in the speaker unit of the present invention, the second diaphragm may have a constricted portion or a notch portion. The constricted portion means that the side edge of the second vibrating plate partially has an area where the width is reduced, and the notched portion refers to an opening area where the surface of the second vibrating plate is partially notched.

Next, the speaker of the present invention is characterized by having at least a cone-shaped first diaphragm, a curved sheet-shaped second diaphragm, a driver unit that drives the first diaphragm and the second diaphragm together, and A frame housing the first vibration plate, the second vibration plate, and the driver unit. The frame system has a supporting member installed with the first vibration plate, the second vibration plate, and the driver unit. The supporting member is formed into a flat plate. The supporting plate, the convex part protruding from one surface of the supporting plate, and the wide eave-shaped foot provided on the convex part are formed, the small diameter side of the first vibration plate and one end side of the second vibration plate are connected with the driver unit For connection, the large-diameter side of the first vibrating plate is connected to the supporting plate of the supporting member constituting a part of the frame, and the other end side of the second vibrating plate is connected to the leg of the supporting member forming a part of the frame.

In the supporting member, the convex portion may be provided in the longitudinal direction on the center portion of the width direction of the supporting plate, and the protruding front surface of the convex portion may be an arc shape equal to the curvature of the second vibration plate, and more preferably, convex The part has a gap on the back surface that is not in contact with the large-diameter side of the first vibration plate.

In addition, in the speaker of the present invention, the frame may be a box-shaped hollow structure composed of six sides such as a front plate, a back plate, a right side plate, a left side plate, a top plate, and a bottom plate. In this case, the aforementioned support The supporting plate of the member also serves as the front plate of the frame, that is, the front plate of the frame can be used as the supporting plate of the aforementioned supporting member.

Furthermore, in the loudspeaker of the present invention, the frame body preferably forms a frame structure in which the front area of the front plate has an open portion formed by the frame body.

In the speaker unit of the present invention, the small diameter side of the first diaphragm and one end side of the second diaphragm are connected to the same driver unit, thereby enabling the driver unit to drive the first diaphragm and the driver unit to drive the second diaphragm Become a co-owner. Therefore, only one drive unit is required to complete the process, thereby reducing the manufacturing cost and weight, and can be reduced and compacted.

In addition, in the speaker of the present invention, the speaker unit of the present invention described above is housed in a frame, and the large-diameter side of the first diaphragm is connected to the supporting plate of the supporting member constituting a part of the frame, and the other end of the second diaphragm is connected The side is connected with the legs of the supporting member constituting a part of the frame. Therefore, a dynamic first speaker with a cone-shaped diaphragm and a second speaker with a bending diaphragm are combined to form a hybrid speaker system. The first speaker (dynamic speaker) compensates for the second speaker (bending diaphragm speaker). ) The low-range side playback band cannot be achieved, but wider-band sound can be played, and a speaker system can be formed. The speaker system has speakers that are extremely effective for the hearing impaired and speakers for the normal hearing.

Moreover, the first speaker and the second speaker are connected as a whole through a driver unit, thereby forming a higher-performance and high-quality hybrid speaker system, which can reduce the installation area. In addition, it is mixed from the first The sound of the loudspeaker and the sound from the second loudspeaker enable the hearing impaired and the normal hearing person to listen together.

Therefore, in a composite speaker system using a bending vibration plate, by expanding the playback The sound quality is improved by the frequency band, and the driver unit can be shared by only one driver unit. Therefore, the cost and weight are reduced, and the speaker can be provided without increasing the size of the frame and ensuring better sound pressure sensitivity.

1‧‧‧The first vibration plate (cone vibration plate)

1a‧‧‧The trail side

1a‧‧‧Hole (neck)

1b‧‧‧Large diameter side

2‧‧‧Second vibration plate (bending vibration plate)

2a‧‧‧One end side

2b‧‧‧The other end side

3‧‧‧Drive unit

4‧‧‧Center cap (dust cap)

5‧‧‧Sub-cone

9‧‧‧Conical support frame

10, 20‧‧‧Speaker unit

21, 22, 23‧‧‧Reinforcing plate

23a‧‧‧Side edge

31‧‧‧Voice coil

32‧‧‧Magnetic circuit

33‧‧‧Gap

41‧‧‧Cut

50‧‧‧Frame

51‧‧‧Supporting member

100‧‧‧Speaker (hybrid speaker system)

311‧‧‧Spool

312‧‧‧Coil wire

313‧‧‧Cut

321‧‧‧Ferrite Magnet

322‧‧‧Yoke

323‧‧‧Cylindrical convex part (rod)

324‧‧‧Plate

324a‧‧‧Hole

511‧‧‧Support plate (front plate)

512‧‧‧Protrusion

512a‧‧‧Front

512b‧‧‧Back

513‧‧‧ feet

513a‧‧‧Ditch

Fig. 1 is a front perspective view of the first speaker unit of the present invention.

Fig. 2 is an exploded view illustrating the basic structure of the first speaker unit of the present invention.

Fig. 3 is a front perspective view illustrating the voice coil of the driver unit used in the speaker unit of the present invention.

4A is an exploded perspective view illustrating the magnetic circuit constituting the driver unit used in the speaker unit of the present invention.

FIG. 4B is a perspective view illustrating the completed assembly of the magnetic circuit of the driver unit used in the speaker unit of the present invention.

5 is an exploded view illustrating the structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

6 is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

Fig. 7 is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

Fig. 8 is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

9A is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

9B illustrates the installation of the second vibration plate on the driver in the first speaker unit of the present invention The assembled perspective view of other structures of the actuator unit.

10A is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

10B is an assembled perspective view illustrating another structure in which the second diaphragm is mounted on the driver unit in the first speaker unit of the present invention.

11A is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

11B is an assembled perspective view illustrating another structure in which the second diaphragm is mounted on the driver unit in the first speaker unit of the present invention.

Fig. 12A is an exploded view illustrating another structure of the first speaker unit of the present invention in which the second diaphragm is mounted on the driver unit.

12B is an assembled perspective view illustrating another structure in which the second diaphragm is mounted on the driver unit in the first speaker unit of the present invention.

Fig. 13 is a front perspective view showing the second speaker unit of the present invention.

Fig. 14 is a front perspective view showing a state in which the second diaphragm is removed from the speaker unit shown in Fig. 13.

Fig. 15 is a side view showing the second speaker unit of the present invention.

Fig. 16 shows a front perspective view of the speaker of the present invention.

Hereinafter, an example of the embodiment of the speaker unit of the present invention and a hybrid speaker system using the speaker unit will be described with reference to the drawings. In addition, the following embodiments are suitable specific examples of the present invention, and although various technical limitations are added, the scope of the present invention is not limited to these embodiments as long as they are not specifically indicated as being limited in the following description.

As shown in FIGS. 1 and 2, the speaker unit 10 of this embodiment includes at least a first diaphragm (hereinafter referred to as "cone diaphragm") formed in a cone shape and a second diaphragm ( Hereinafter referred to as "bending vibration plate") 2, and a driver unit 3 that drives the cone-shaped vibration plate 1 and the bending vibration plate 2 together.

The cone-shaped vibration plate 1 is a sheet-shaped member formed in a mortar shape, in which the small diameter side 1 a is connected to the driver unit 3, and the large diameter side 1 b is attached to the cone-shaped support frame 9. When used as a speaker, the cone-shaped diaphragm 1 is installed with a cone-shaped support frame 9 to a frame body 50 described later, and the large diameter side 1b of the cone-shaped diaphragm 1 is connected to the frame body 50 through the cone-shaped support frame 9.

The flexural vibration plate 2 is a flexible sheet member capable of forming a curved curved surface, wherein one end side 2a is connected to the same driver unit 3 to which the small diameter side 1a of the cone-shaped vibration plate 1 is connected. The flexural vibration plate 2 connects one end side 2a to the driver unit 3 in the upright flat plate state, and then elastically bends the other end side 2b to deform it, thereby forming a curved surface, and directing the deformed curved convex surface side toward the front. The other end side 2b is connected to a frame 50 described later. In addition, the flexural vibration plate 2 may be a member formed to have a curved curved surface part in advance. In this case, after connecting one end side 2a to the driver unit 3, the other end side 2b is connected to the front side with the curved convex surface facing forward. The frame 50 is connected.

In addition, the bending vibration plate 2 is formed in a shape in which the distance (width) between the side edge portions in the direction from the one end side 2a to the other end side 2b gradually decreases from the other end side 2b to the one end side 2a. That is, the shape of the side edge of the one end side 2a in the bending vibration plate 2 is formed to be approximately the same shape suitable for the mortar shape of the cone-shaped vibration plate 1, even if the bending vibration One end side 2a of the movable plate 2 is connected to the driver unit 3 to which the cone-shaped vibration plate 1 is connected, and the cone-shaped vibration plate 1 and the bending vibration plate 2 will not interfere.

In addition, although not shown in the figure, the bending vibration plate 2 may have a constricted portion on the side edge portion or a notch portion on the surface. The constricted part is a region that has the side edge curve of the bending vibration plate 2 and is gently formed with a notch and has a narrow width. For example, it may be formed in the shape of a guitar or snowman when the bending vibration plate 2 is viewed from the front.

In addition, the notch part is a part of the surface with an open area cut so that a singular or plural hole is formed near the center of the bending vibration plate 2, for example, a large round hole or a small hole pattern may be formed. Since the bending vibration plate 2 is provided with such a constricted portion or notch, distortion caused by the resonance of the bending vibration plate 2 can be restricted, excessive resonance can be suppressed, and the audible sound can be improved by appropriate higher harmonics.

The material of the flexural vibration plate 2 can be paper such as carbon paper, flexible plastic such as polyimide or polyester, wood such as balsa, metal such as aluminum, beryllium, and boron. In addition, the thickness of the bending vibration plate 2 is not particularly limited as long as it can be formed in advance to have a curved curved surface portion, or can be elastically bent and deformed.

The driver unit 3 is an actuator that vibrates the cone-shaped vibrating plate 1 and the bending vibrating plate 2 in response to an input (powered) electronic signal (sound signal). As the driver unit 3, for example, an electromagnetic actuator of a movable coil type or a movable magnet type can be cited. Since the volume occupancy rate of the coil is high, the magnetic power of the driver units 3 is high. Therefore, high-volume and clear sound can be expected.

The movable coil type actuator is the following: a sounding coil is inserted into the magnetic gap formed by the magnetic circuit, and an electronic signal is applied to the sounding coil, thereby generating vibration accompanying the applied signal, so that the vibration is transmitted to and the sounding coil Connect the vibrating plate and drive it. That is, one end of the sounding coil is contained in the magnetic circuit (magnetic field), and the other end is connected to the vibrating plate. Therefore, the input electronic signal will cause the sounding coil to move. This action will be transmitted to the vibrating plate and converted into sound energy (sound ).

In this embodiment, the driver unit 3 is described as a movable coil type actuator in which one end of the sounding coil 31 is inserted into the magnetic gap of the magnetic circuit 32, and an electronic signal is applied to make the sounding coil 31 drive. As shown in FIG. 3, at the outer peripheral end of the bobbin 311 formed in a cylindrical shape, a coil wire 312 of a required diameter is wound by the required number of turns, thereby constituting the sounding coil 31.

On the other hand, as shown in FIG. 4, the magnetic circuit 32 is formed to correspond to the shape of the driving voice coil 31. The most commonly used general structure is a ring-shaped ferrite magnet 321, a plate 324, and a yoke 322 and other magnetic circuit components. The plate 324 is provided with a hole 324a of a specific size and diameter in the center of a circular plate made of a good magnetic iron material, and the yoke 322 is in the center of a circular plate made of the same iron material. A cylindrical convex portion (hereinafter referred to as "rod") 323 is provided.

A mounting plate 324 is arranged on the ferrite magnet 321 formed in a cylindrical shape, and a disc part on which a yoke 322 is mounted is arranged under the ferrite magnet 321. The yoke 322 is provided with a rod formed in a cylindrical shape. 323, thereby forming a magnetic gap. That is, the outer diameter of the rod 323 and the inner diameter of the plate hole 324a are aligned with the same center to install the rod 323 and the plate 324, so that the rod 323 is outside An annular gap with a predetermined width is formed between the inner surface of the hole 324a at the center of the plate 324, that is, the gap 33.

In addition, the depth dimension of the gap 33 is determined by the thickness dimension of the plate 324. Therefore, the magnetic force of the ferrite magnet 321 is guided to the gap 33 by the yoke 322 and the plate 324 and converges, so a magnetic flux is generated in the gap 33 to form a magnetic gap. Next, a voice coil 31 is arranged in the center of the annular magnetic gap 33.

Therefore, as shown in FIG. 2, the cone-shaped vibrating plate 1 is attached to a hole (hereinafter referred to as "neck") 1a of a predetermined size in the center of the cone-shaped vibration plate 1 to insert the voice coil 31, and the neck 1a and the bobbin 311 The contact part of the outer peripheral part is coated with an adhesive, thereby being connected and fixed to the driver unit 3. On the other hand, the bending vibration plate 2 can be connected and fixed to the front end of the bobbin 311 by the predetermined means shown in FIGS. 5-12, for example.

First, as shown in FIG. 5, a cutout 313 is provided at the tip of the sounding coil 31, and one end side 2a of the bending vibration plate 2 is inserted into the cutout 313 to fix the bending vibration plate 2 so that the bending vibration plate 2 and the driver unit 3 can be made (Sounding coil 31) is directly connected. At this time, in order to efficiently transmit the vibration from the driver unit 3 to the bending vibration plate 1, it is preferable to provide a cutout 313 so that one end side 2a of the bending vibration plate 2 is substantially perpendicular to the sound coil 31. Pick up.

Fig. 5 shows the following state. The flexural vibration plate 2 is inserted into the two slits 313 and 313 provided on a horizontal straight line passing through the center of the voice coil 31 (the bobbin 311), and the end side 2a coated with the adhesive is inserted, thereby The connection is fixed to the drive unit 3.

In addition, as shown in FIG. 6, a center cap (dust cap) 4 is fixed at the front end of the voice coil 31, and the bending vibration plate 2 is fixed at the center of the center cap 4, thereby making the bending vibration plate 2 and the driver unit 3 (Sounding coil 31) is directly connected. Compared with the aforementioned method in which a slit 313 is provided at the front end of the sounding coil 31 and inserted into one end side 2a of the bending vibration plate 2, this method can reliably connect the bending vibration plate 2 and the driver unit 3 (sounding coil 31). Better.

The center cap (dust cap) 4 is a component installed for the purpose of preventing dust from entering the bobbin 311. The same material as the tapered paper can be used to improve the uniformity of the tone, or the use of metal-based materials has The function of the dome tweeter.

Fig. 6 shows the following state. The bending vibration plate 2 has one end side 2a bent downward to form an adhesive area, and the adhesive-coated side (adhesive area) is attached to the front end of the voice coil 31 (the bobbin 311) The surface of the center cap 4 is thereby connected and fixed to the driver unit 3. At this time, in order to make the surface of the center cap 4 flat and efficiently transmit the vibration from the driver unit 3 to the bending vibration plate 1, it is preferable to bend one end side 2a and stick it so that the bending vibration plate 2 faces each other. The front end of the center cap 4 meets at a substantially right angle.

In addition, as shown in FIG. 7, a cutout 41 is provided in the center of the center cap (dust cap) 4 covering the front end of the voice coil 31, and one end side 2a of the bending vibration plate 2 is inserted into the cutout 41, and the bending vibration plate 2 is fixed. As a result, the bending vibration plate 2 and the driver unit 3 (voice coil 31) can be directly connected. In addition, compared with the aforementioned method in which a notch 313 is provided at the tip of the voice coil 31 and the one end side 2a of the bending vibration plate 2 is inserted, this method can also reliably connect the bending vibration. The moving plate 2 and the driver unit 3 (voice coil 31) are preferable from this point of view.

Fig. 7 shows the following state. The bending vibration plate 2 is inserted into the cutout 41 provided on the horizontal straight line passing through the center of the sounding coil 31 (the bobbin 311), and the end side 2a coated with the adhesive is inserted to be connected and fixed to the driver unit. 3. In addition, one end side 2a of the bending vibration plate 2 can be folded back to the back side of the center cap 4 after being inserted into the cut 41. Thereby, the possibility of one end side 2a of the bending vibration plate 2 falling off from the cutout 41 can be minimized.

Also, as shown in FIG. 8, the sub-cone 5 is covered and fixed to the front end of the sounding coil 31, and the bending vibration plate 2 is fixed to the center of the sub-cone 5, whereby the bending vibration plate 2 and the driver unit 3 (sounding The coil 31) is directly connected. In addition, compared with the aforementioned method in which a notch 313 is provided at the tip of the sounding coil 31 and inserted into one end side 2a of the bending vibration plate 2, this method can also reliably connect the bending vibration plate 2 and the driver unit 3 (sounding coil 31). It seems to be better.

By using the sub-cone 5, the installation of the bending vibration plate 2 becomes easy, and the sub-cone 5 itself at the tip of the sounding coil 31 (the bobbin 311) can be directly mounted together with the cone-shaped vibration plate 1 The high range of the sound is extended.

Fig. 8 shows the following state. The bending vibration plate 2 is bent at one end side 2a downward to form an adhesive area, and the adhesive-coated side (adhesive area) is attached to the sub-covered front end of the voice coil 31 (the bobbin 311) The surface of the cone 5 is thereby connected and fixed to the driver unit 3. At this time, the bending vibration plate 2 is the same as when sticking to the surface of the center cap 4. In order to efficiently transmit the vibration from the driver unit 3 to the bending vibration plate 2, it is preferable to set one end side 2a is bent and pasted so that the bending vibration plate 2 is in contact with the front end of the sub cone 5 at a substantially right angle.

In addition, as shown in FIGS. 9 to 11, the bending vibration plate 2 can be attached to the driver unit 3 by attaching reinforcement plates 21, 22, and 23 to one surface of the one end side 2 a. By installing the reinforcing plates 21, 22, 23, the resonance of the bending vibration plate 2 can be reduced, and the bending vibration plate 2 can be more easily and firmly installed on the voice coil 31 (center cap 4 or sub cone 5, etc.) .

Fig. 9A shows the state in which the top surface of the one end side 2a of the bending vibration plate 2 with one end side 2a bent downward is pasted similarly to the reinforcing plate 21 with one end side bent upward, on the side formed by the bending (sticking The area) is coated with adhesive and pasted on the surface of the center cap 4 covering the front end of the voice coil 31 (the bobbin 311). 9B shows a state in which the bending vibration plate 2 with the strong plate 21 is attached to the surface of the center cap 4 exposed at the center of the cone-shaped vibration plate 1 and connected and fixed to the driver unit 3.

10A shows a state in which a reinforcing plate 22 is attached to the upper surface of one end side 2a of the bending vibration plate 2 so that one end side 2a of the bending vibration plate 2 and the reinforcing plate 22 are facing into the cutout 41 provided in the center of the center cap 4 insert. 10B shows a state in which one end 2a of the flexural vibration plate 2 of the additional strong plate 22 coated with an adhesive is inserted into the cutout 41 of the center cap 4 exposed at the center of the cone-shaped vibration plate 1 to be attached and connected Fixed to the drive unit 3.

11A shows a state in which a reinforcing plate 21, which is bent upward in the same manner, is pasted on the top surface of one end side 2a of the bending vibration plate 2 whose one end side 2a is bent downward, on the side formed by the bending (Adhesive area) Coat the adhesive, and stick to the cover on the vocal line The surface of the secondary cone 5 at the front end of the ring 31 (the bobbin 311). 11B shows a state in which the bending vibration plate 2 with the strong plate 21 is attached to the surface of the sub-cone 5 exposed at the center of the cone-shaped vibration plate 1 and connected and fixed to the driver unit 3.

In addition, as shown in FIG. 12, the side edge portion 23a of the reinforcing plate 23 pasted on one end side 2a of the bending vibration plate 2 can be installed on the surface of the cone-shaped vibration plate 1, thereby making the bending vibration plate 2 and the driver unit 3 ( The sounding coil 31) is connected indirectly.

In addition, FIG. 12A shows a state in which a reinforcing plate 23 that is bent upward by bending the side edge portion 23a is pasted on the upper surface of one end side 2a of the bending vibration plate 2 with one end side 2a bent downward, and formed by bending Adhesive is applied to one side (adhesive area) and the end surface of the one end side 2a, and is adhered to the surface of the center cap 4 and the surface of the cone-shaped vibrating plate 1 covering the front end of the voice coil 31 (the bobbin 311). 12B shows a state in which the bending vibration plate 2 with the strong plate 23 is attached to the surface of the center cap 4 and the surface of the cone vibration plate 1 exposed at the center of the cone vibration plate 1 and connected and fixed to the driver unit 3.

In the speaker unit 10 constructed as described above, the small-diameter side 1a of the cone-shaped vibration plate 1 and one end side 2a of the bending vibration plate 2 are connected to the driver unit 3 (voice coil 31) together, and an electronic signal is applied to the driver unit 3 In this way, the sounding coil 31 generates vibration accompanying the applied signal, and the vibration is transmitted to and driven by the cone-shaped vibration plate 1 and the bending vibration plate 2 connected to the sounding coil.

That is, one end (base end portion) of the sounding coil 31 is accommodated in the magnetic circuit (magnetic field) 32, and the other end (front end portion) is connected to the cone-shaped vibration plate 1 and the bending vibration plate 2, so the input electrons The signal causes the voice coil 31 to operate, and this action is transmitted to the cone-shaped vibration plate 1 and the bending vibration plate 2 to be converted into acoustic energy (sound).

Here, the direction in which the bending vibration plate 2 is driven by the driver unit 3 is the expansion direction on the surface of the bending vibration plate 2, that is, from one end side 2a of the bending vibration plate 2 to the opposite end side 2b (or The curved direction extending from the other end side 2b to the curved surface of the opposite end side 2a). When the bending-vibration plate 2 is viewed from the side (cross-section), the surface direction is curved into an arcuate shape.

In addition, as shown in FIGS. 13 to 15, the speaker unit 10 can be installed on the supporting member 51 to form a speaker unit 20 of different shapes. That is, the small diameter side 1a of the cone-shaped vibration plate 1 and one end side 2a of the bending vibration plate 2 are connected to the driver unit 3 (sound coil 31), and the large diameter side 1b of the cone-shaped vibration plate 1 and the bending vibration plate 2 The other end side 2b is connected to the supporting member 51. The supporting member 51 is composed of a supporting plate 511 formed in a flat plate shape, a convex portion 512 protruding from one side of the supporting plate 511, and a wide eave-shaped leg 513 provided on the convex portion 512.

The support plate 511 is provided with an opening (not shown) through which the back side of the cone-shaped vibration plate 1 can be inserted at the top, and a cone-shaped support frame 9 for connecting the large-diameter side 1b of the cone-shaped vibration plate 1 is installed around the opening. This connects the large-diameter side 1b of the cone-shaped vibration plate 1 to the supporting member 51 via the supporting plate 511. In the figure, the support plate 511 is formed in a vertically long rectangular shape, but its shape is not particularly limited.

The protruding part 512 supports the leg 513 on the other end side 2b of the bending vibration plate 2 installed, but it does not cause obstruction (not hitting) when the bending vibration plate 2 is installed, so that the front side is protruding 512a is formed as an arc-like curved surface substantially equal to the bending of the bending vibration plate 2. Therefore, on the back side of the bending vibration plate 2, the front surface 512 a of the convex portion 512 is positioned at a position that does not contact the back surface of the bending vibration plate 2. The convex portion 512 functions as a supplement to prevent the bending vibration plate 2 from being deformed by the external force from the front side.

In addition, not all the back surfaces 512b of the convex portions 512 are installed on the support plate 511. As shown in FIG. 15, the area of the back surface 512b located on the sound emitting side of the cone-shaped diaphragm 1 is not obstructed by the vibration of the cone-shaped diaphragm 1. In this way, there is an appropriate gap that does not contact the large diameter side 1b of the cone-shaped vibration plate 1.

Furthermore, the convex portion 512 is for the purpose of not shielding the sound transmission from the cone-shaped diaphragm 1, and only one arcuately protrudes in the longitudinal direction from the center portion of the front surface of the support plate 511. Thereby, the sound generated from the cone-shaped diaphragm 1 is transmitted through both sides of the convex portion 512. In addition, as long as the sound transmission from the cone-shaped diaphragm 1 is not hindered, a plurality of convex portions 512 may be provided.

The leg 513 holds the other end side 2b of the mounted bending vibration plate 2, but has a groove 513a on the upper surface along the width direction. The other end side 2b of the bending vibration plate 2 is installed in the recess 513a, so that the other end side 2b of the bending vibration plate 2 is connected to the supporting member 51 through the legs 513.

In the speaker unit 20 constructed as described above, the small diameter side 1a of the cone-shaped vibration plate 1 and one end side 2a of the bending vibration plate 2 are connected to the driver unit 3 (sounding coil 31), and the large diameter side of the cone-shaped vibration plate 1 1b and the other end side 2b of the bending vibration plate 2 are connected to the supporting member 51. Therefore, the conical vibration plate 1 can be stably supported by the support member 51 The vibration plate 2 and the driver unit 3 make it easier to transport and can be easily installed on the frame.

Next, as shown in FIG. 16, the speaker 100 of this embodiment is constituted by having at least a cone-shaped vibration plate 1, a bending vibration plate 2, a driver unit 3, and a frame 50, and by having a cone-shaped vibration The dynamic first speaker of the panel 1 and the second speaker with the bending vibration plate 2 can enable the hearing impaired and the normal hearing person to listen together.

The frame 50 is a box-shaped hollow structure that houses the cone-shaped vibration plate 1, the bending vibration plate 2, and the driver unit 3, and is formed into a skeleton structure that is attached to the self-installed first speaker The front area where the sound is emitted from the (cone diaphragm 1) or the second speaker (bending diaphragm 2) has an open portion constituted by a frame.

When the first speaker unit 10 is installed in the frame 50, for example, when the frame 50 has a six-sided structure consisting of a front panel, a back panel, a right side panel, a left side panel, a top panel, and a bottom panel, the first speaker unit 10 It is installed on the front panel of the frame 50. In addition, when the second speaker unit 20 is installed in the frame 50, the support plate 511 of the support member 51 of the support member 51 of the conical vibration plate 1, the bending vibration plate 2, and the driver unit 3 can also be used as the front of the frame 50. It is installed on the board.

Therefore, regardless of the situation of any speaker unit, the cone-shaped vibration plate 1 installed in the frame 50, and the large-diameter side 1b is connected to the support plate 511 of the support member 51 constituting a part of the frame 50, which is the same as the bending vibration plate 2. Among them, the other end side 2b is connected to the leg 513 of the supporting member 51 constituting a part of the frame body 50.

Also, explain the opening part in this case, which is located farther forward than the front panel of the frame body 50. The opening is, specifically, the opening in the front, the upper surface, and the left and right side surfaces in the area from the support plate 511 of the support member 51 that functions as a front plate to the legs 513. The open portion prevents the sound generated from the cone-shaped vibration plate 1 or the bending vibration plate 2 from staying and effectively emits the sound to the outside.

In the speaker 100 constructed in the above manner, if an electronic signal is input to the driver unit 3, compared with the conventional speaker system for the hearing impaired and the normal hearing person, it can be a high-performance, light-weight, smaller installation area, and a much higher speaker system. It is a hybrid speaker system that is functional and allows the hearing impaired and normal hearing people to listen satisfactorily.

In addition, the electronic signal input to the driver unit 3 may include, for example, audio signals output by smart devices such as a TV or radio, audio player, personal computer, smart phone, or tablet.

Also, although not shown in the figure, holes for installing audio jacks and switches can be provided on the back plate of the frame 50.

Therefore, in the present invention, the sound from the dynamic first speaker equipped with a cone-shaped diaphragm is mixed with the sound from the second speaker equipped with a bending diaphragm, thereby making it possible to reproduce sounds in a wider range (for hearing impaired And sound waves for people with normal hearing). In addition, the driver unit for driving the cone-shaped vibration plate and the driver unit for driving the bending vibration plate are shared, so that the manufacturing cost and weight can be reduced. Furthermore, by connecting the first speaker and the second speaker integrally, the installation area can be reduced and compact.

1‧‧‧The first vibration plate (cone vibration plate)

1a‧‧‧The trail side

2‧‧‧Second vibration plate (bending vibration plate)

2a‧‧‧One end side

3‧‧‧Drive unit

9‧‧‧Conical support frame

10‧‧‧Speaker unit

Claims (15)

A speaker unit, characterized in that it has at least: The first vibrating plate is formed into a cone shape; A sheet-shaped second vibrating plate having a curved single curved surface; and A driver unit, which drives the aforementioned first vibration plate and second vibration plate together; The driver unit is connected to the small diameter side of the first vibration plate and one end side of the second vibration plate. A speaker unit, characterized in that it has at least: The first vibrating plate is formed into a cone shape; The second vibrating plate in the shape of a curved sheet; A driver unit, which drives the aforementioned first vibration plate and second vibration plate together; and A supporting member, which is equipped with the aforementioned first vibrating plate and the second vibrating plate, and the aforementioned driver unit; The aforementioned supporting member is composed of a supporting plate formed in a flat plate shape, a convex portion protruding from one surface of the supporting plate, and a wide eave-shaped leg provided on the convex portion, The small diameter side of the first vibrating plate and one end side of the second vibrating plate are connected to the driver unit, The large-diameter side of the first vibration plate is connected to the support plate of the support member, The other end side of the second vibration plate is connected with the leg of the support member. The speaker unit of claim 1 or 2, wherein one end side of the second vibration plate is connected to a cutout provided at the front end of the bobbin of the driver unit. The speaker unit of claim 1 or 2, wherein one end of the second vibration plate is connected to the center cap installed at the front end of the bobbin of the driver unit. Such as the speaker unit of claim 4, wherein one end of the second vibration plate is connected to In the incision provided in the aforementioned center cap. The speaker unit of claim 1 or 2, wherein one end of the second vibration plate is connected to a sub-cone installed at the front end of the bobbin of the driver unit. The speaker unit according to any one of claims 1 to 6, wherein the second vibration plate is provided with a reinforcing plate on one side of one end side. The speaker unit of claim 7, wherein one end side of the second diaphragm is connected to the first diaphragm through the side edge of the reinforcing plate. The speaker unit according to any one of claims 1 to 8, wherein the second diaphragm has a constricted portion or a notch portion. A speaker, characterized in that it has at least: The first vibrating plate is formed into a cone shape; The second vibrating plate in the shape of a curved sheet; A driver unit, which drives the aforementioned first vibration plate and second vibration plate together; and A frame housing the first and second vibrating plates, and the driver unit; The frame system has a supporting member equipped with the first vibration plate and the second vibration plate, and the driver unit, The aforementioned supporting member is composed of a supporting plate formed in a flat plate shape, a convex portion protruding from one surface of the supporting plate, and a wide eave-shaped leg provided on the convex portion, The small diameter side of the first vibrating plate and one end side of the second vibrating plate are connected to the driver unit, The large-diameter side of the first vibrating plate is connected to the supporting plate of the supporting member constituting a part of the frame, and The other end side of the second vibration plate is connected to the leg of the supporting member constituting a part of the frame. The speaker according to claim 10, wherein the convex portion is arranged in the longitudinal direction on the center portion in the width direction of the support plate. The speaker according to claim 11, wherein the protruding front surface of the convex portion has an arc shape equal to the curvature of the second diaphragm. The speaker of claim 11 or 12, wherein the convex portion has a gap on the back surface that is not in contact with the large diameter side of the first diaphragm. The speaker according to any one of claims 10 to 13, wherein the aforementioned frame system is formed as a box-shaped hollow structure and is composed of six sides including a front panel, a back panel, a right side panel, a left side panel, a top panel, and a bottom panel, The aforementioned front plate is used as the supporting plate of the aforementioned supporting member. The speaker according to claim 14, wherein the frame body is formed as a frame structure, and the frame structure is such that the front area of the front panel has an open portion formed by the frame body.

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