TWI804679B - 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 speakers

The present invention relates to a loudspeaker and a loudspeaker unit using a bending vibrating plate. Specifically, it relates to a kind of technology that enables the hearing-impaired person to talk to the normal-hearing person without wearing a hearing aid and hear the other party's voice, and the playback frequency band is expanded. Higher performance composite flexural vibration plate loudspeaker system.

In recent years, people with so-called hearing impairments such as geriatric hearing impairment caused by increasing age, organic hearing impairment caused by damage to the outer ear or middle ear, inner ear, and cochlear nerve, and functional hearing impairment caused by stress have gradually The number of hearing-impaired persons in Japan is estimated to be 20 million. When you have a hearing impairment, not only can you not hear sounds, but it is difficult to clearly distinguish even audible sounds. Therefore, there are cases where the respondent fails to fully understand the content of the conversation, causing the other party to misunderstand, or repeating the question several times during the conversation, which prevents the smooth progress of the conversation.

In addition, the hearing impairment will make it impossible to communicate smoothly, and you will feel that speaking is troublesome without knowing it, which will reduce the chance of contacting people, or you will become a hermit without going out, and you will be isolated and alienated by society. risk.

As a means of alleviating the degree of inconvenience of such a hearing impairment, hearing aids are generally used. Also, when watching TV, you can use an FM transmitter, which is connected to the headphone 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 favored due to reasons such as "troublesome" and "disgraceful to wear", and are not used often, and are usually used as a last resort. In addition, hearing aids often receive noise, which sometimes causes increased pressure. On the other hand, when using an FM transmitter, it is very cumbersome to prepare the FM transmitter and set the FM transmitter whenever watching TV. Also, because the FM transmitter is connected to the headphone jack, the output destination of the sound is switched, and there is a problem that the hearing-impaired person and the normal-hearing person cannot watch TV smoothly together.

Therefore, although it is not for all hearing-impaired persons, as a speaker that produces sounds that can be heard by the hearing-impaired persons, the applicant has proposed a speaker that has a frame with a hollow structure, a drive unit accommodated in the frame, and a configuration. The bending vibration plate on the surface of the frame 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).

A speaker using such a bending vibration plate (hereinafter referred to as "bending vibration plate speaker") can enable the hearing-impaired to listen without wearing a hearing aid, and the normal-hearing person can also listen without feeling incongruous. 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 clearly heard not only in the vicinity but also in the distance. That is, there is no popping sound when the volume is too high, and it can be listened to without being too noisy even at close range.

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

Here, the bending vibration plate loudspeaker generally adopts the method of driving the bending vibration plate with a movable coil, ie, a so-called voice coil, to generate sound. In this method, in order to increase the playback capability of the low-range side, it is necessary to increase the amplitude (movement) of the voice coil corresponding to the capability, and to increase the corresponding vibration plate and structure and power.

However, if the amplitude of the voice coil is forcibly increased in order to increase the playback capability of the low-range side, the bending vibration plate itself will generate abnormal sound. Therefore, in order to achieve the same low-range reproduction as conventional speakers, it is necessary to increase the length of the bending vibration plate, etc., and the area must be enlarged, and its size cannot be called a practical size.

Therefore, in order to increase the playback capability on the low-range side, it is considered to further install a dynamic speaker unit with a cone-shaped diaphragm on the frame installed with the bending diaphragm speaker unit, and drive the two speaker units to emit sound respectively. In this way, the sound quality of the bending vibration plate that is difficult to emit on the low side is corrected by utilizing the sound generation 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 obtained.

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

Also, if each speaker unit is installed relative to the frame so that the sound emission directions of the bending vibration plate and the conical vibration plate are the same in order to ensure better sound pressure sensitivity emitted by the two speakers, a larger sound pressure is required. Setting the area will make the frame huge. On the other hand, if the sound emission direction of the bending vibration plate and the conical vibration plate are different in consideration of the installation area, sufficient sound pressure sensitivity cannot be obtained for one of the speakers.

[Prior Art Literature] [Patent Document]

Patent Document 1: Japanese Patent No. 5668233

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

The present invention has been accomplished in view of the above circumstances, and it provides a speaker that can improve sound quality and reduce cost by expanding the playback frequency band in a composite speaker system using a bending vibration plate, and can further reduce the cost without using a frame. Ensuring better sound pressure in the case of gigantism.

The first speaker unit of the present invention is characterized in that it includes at least a cone-shaped first vibration plate, a sheet-shaped second vibration plate having a curved single curved surface, and driving the first vibration plate and the second vibration plate 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.

Also, the second speaker unit of the present invention is characterized in that it includes at least a cone-shaped first vibration plate, a curved sheet-shaped second vibration plate, and a driver for driving the first vibration plate and the second vibration plate together. unit, and a supporting member equipped with a first vibrating plate, a second vibrating plate, and a driver unit. Consisting of wide eave-like feet on the convex part, 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 supporting member , the other end of the second vibrating plate is connected to the legs 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 vibrating 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 a cutout provided at the front end of the bobbin of the driver unit.

Also, preferably, one end side of the second vibrating plate is connected to the center cap (also called "dust cap" or "chamber") or secondary cone installed at the front end of the bobbin of the driver unit. In this case, one end side of the second vibrating plate may be inserted and connected to the cutout provided in the center of the center cap.

In addition, in the speaker unit of the present invention, it is preferable that the second diaphragm is mounted on the driver unit by attaching a reinforcing plate to one of the ends. In addition, in the speaker unit of the present invention, preferably, one end side of the second vibration plate is connected to the surface of the first vibration plate through the side edge portion of the reinforcement plate.

Furthermore, in the speaker unit of the present invention, the second diaphragm may have a narrowed portion or a notch. The constricted portion refers to a region in which the side edge of the second vibration plate partially has a reduced width, and the notch portion refers to an opening region in which the surface of the second vibration plate partially has a notch.

Next, the loudspeaker of the present invention is characterized in that it includes at least a first vibrating plate formed in a cone shape, a second vibrating plate bent in a sheet shape, a driver unit that drives the first vibrating plate and the second vibrating plate together, and The frame housing the first vibrating plate, the second vibrating plate, and the driver unit, the frame system has a supporting member on which the first vibrating plate, the second vibrating plate, and the driver unit are installed, and the supporting member is formed of a flat plate A support plate, a convex portion protruding from one side of the support plate, and a wide eave-shaped leg provided on the convex portion, the small diameter side of the first vibration plate and one end side of the second vibration plate are connected to the driver unit 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 body, and the other end side of the second vibrating plate is connected to the leg of the supporting member constituting a part of the frame body.

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

Also, in the loudspeaker of the present invention, the frame body may be a box-shaped hollow structure, which is 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. The support plate of the component doubles as the front plate of the frame body, that is, the front plate of the frame body can be used as the support plate of the aforementioned support member.

Furthermore, in the loudspeaker of the present invention, it is preferable that the frame body forms a skeleton structure in which the front area of the front plate has an opening made of the frame body.

In the speaker unit of the present invention, the small-diameter side of the first vibrating plate and one end side of the second vibrating plate are connected to the same driver unit, whereby the driver unit that drives the first vibrating plate and the driver unit that drives the second vibrating plate become co-owners. Therefore, only one driver unit is required to complete, thereby reducing manufacturing cost and weight, and enabling miniaturization and compactness.

Also, in the speaker of the present invention, the above-mentioned speaker unit of the present invention is housed in a frame, the large-diameter side of the first vibration plate is connected to the support plate of the support member constituting a part of the frame, and the other end of the second vibration plate is The sides are connected to the legs of the support members forming part of the frame. Therefore, a hybrid speaker system is formed by combining a dynamic first speaker with a conical diaphragm and a second speaker with a bending diaphragm, and the second speaker (bending diaphragm speaker) is supplemented by the first speaker (dynamic speaker). ) can not achieve the low-range side playback band, and can play a wider range of sound, can form a speaker system, the speaker system has very effective speakers for the hearing impaired, and speakers for normal hearing people.

Moreover, the first loudspeaker and the second loudspeaker are integrated through a driver unit, thereby forming a higher-performance and high-quality hybrid speaker system, which can reduce the installation area. The sound from the speaker and the sound from the second speaker allow hearing impaired and hearing people to listen together.

Therefore, in the compound loudspeaker system using the bending vibration plate, by expanding the playback The frequency band improves the sound quality, and the driver unit can be shared with only one driver unit, so the cost and weight are reduced, and a speaker that can ensure better sound pressure without enlarging the frame can be provided.

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

1a‧‧‧path side

1a‧‧‧hole (neck)

1b‧‧‧Large diameter side

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

2a‧‧‧One end side

2b‧‧‧The other side

3‧‧‧Drive unit

4‧‧‧Center cap (dust cap)

5‧‧‧Auxiliary 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‧‧‧Incision

50‧‧‧frame

51‧‧‧Support member

100‧‧‧Speakers (Hybrid Speaker System)

311‧‧‧Bobbin

312‧‧‧Coil wire

313‧‧‧Incision

321‧‧‧Ferrite magnet

322‧‧‧Yoke iron

323‧‧‧Cylindrical convex part (rod)

324‧‧‧board

324a‧‧‧hole

511‧‧‧Support plate (front plate)

512‧‧‧convex part

512a‧‧‧front

512b‧‧‧back

513‧‧‧Foot

513a‧‧‧Concave groove

Fig. 1 is a front perspective view showing a 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 a voice coil constituting a driver unit used in the speaker unit of the present invention.

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

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

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

Fig. 6 is an exploded 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. 7 is an exploded 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. 8 is an exploded view illustrating another structure in which the second diaphragm is mounted on the driver unit in the first speaker unit of the present invention.

9A is an exploded 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. 9B illustrates that the second vibrating plate is installed on the driver in the first speaker unit of the present invention. The assembled perspective view of other structures of the actuator unit.

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

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.

Fig. 11A is an exploded 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. 11B is a perspective view illustrating the assembly completion of 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 in which the second diaphragm is mounted on the driver unit in the first speaker unit of the present invention.

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 in the speaker unit shown in Fig. 13 .

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

Fig. 16 is a front perspective view showing the loudspeaker of the present invention.

Hereinafter, an example of an 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 limitations are technically imposed, the scope of the present invention is not limited to these embodiments unless otherwise specified as a limitation in the following description.

As shown in FIG. 1 and FIG. 2 , the speaker unit 10 of the present embodiment includes at least a cone-shaped first vibration plate (hereinafter referred to as “cone-shaped vibration plate”) 1 and a curved sheet-shaped second vibration plate ( Hereinafter referred to as "flexural vibration plate") 2 and a driver unit 3 that drives the cone-shaped vibration plate 1 and the bending vibration plate 2 together.

The conical vibrating plate 1 is a sheet-like member formed in the shape of a mortar, 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 conical support frame 9 . When used as a loudspeaker, the cone-shaped diaphragm 1 is mounted with a cone-shaped support frame 9 on 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 bending vibration plate 2 is a flexible sheet member capable of forming a curved curved surface, wherein one end side 2 a is connected to the same driver unit 3 connected to the small-diameter side 1 a of the conical vibration plate 1 . The bending vibration plate 2 is formed by connecting one end side 2a to the driver unit 3 in a standing flat plate state, elastically bending and deforming the other end side 2b to form a curved surface, and directing the deformed curved convex side toward the front. The other end side 2b is connected to a frame body 50 described later. In addition, the flexural vibration plate 2 may be formed so as to have a pre-bent curved surface. In this case, after connecting the driver unit 3 to the one end side 2a, the other end side 2b is connected to the later-described curved surface so that the curved convex surface faces forward. The frame body 50 is connected.

In addition, the bending vibration plate 2 is formed in such a shape that the distance (width) between the side edges along 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 portion of the bending vibration plate 2 near the one end side 2a is formed to be substantially the same shape as the mortar shape of the conical vibration plate 1. One end side 2a of the moving plate 2 is connected to the driver unit 3 connected to the conical vibrating plate 1, and the conical vibrating plate 1 and the bending vibrating plate 2 will not interfere.

Also, although not shown, the flexural vibration plate 2 may have a narrowed portion on the side edge or a notch on the surface. The constricted part is a part of the side edge curve of the bending vibration plate 2 and is gently notched and has a narrow width. For example, the bending vibration plate 2 may be shaped like a guitar or a snowman when viewed from the front.

In addition, the notch part has a partly cut open area on the surface in such a manner that a single or plural number of holes are formed near the center of the flexural vibration plate 2, for example, a large circular hole may be formed, or a pattern of small holes may be formed. By providing such a narrowed portion or a notch on the flexural vibration plate 2, the distortion caused by the resonance of the flexural vibration plate 2 can be limited, excessive resonance can be suppressed, and the sense of sound can be improved with appropriate higher harmonics.

The bending vibration plate 2 can be made of paper such as carbon paper, flexible plastic such as polyimide or polyester, wood such as balsa, metal such as aluminum, beryllium, and boron. Also, the thickness of the flexural vibration plate 2 is not particularly limited as long as it can be preformed to have a curved curved surface, or can be deformed by elastic bending.

The driver unit 3 is an actuator that vibrates the conical vibration plate 1 and the bending vibration plate 2 in response to an input (energized) 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 mentioned. The magnetic power of the driver units 3 is high due to the high volume occupancy of the coils. Therefore, high-volume and clear pronunciation can be expected.

The movable coil actuator is as follows: a voice coil is inserted into the magnetic gap formed by the magnetic circuit, and an electronic signal is applied to the voice coil, thereby generating vibration accompanying the applied signal, and the vibration is transmitted to the voice coil. connected to the vibrating plate to be driven. That is to say, one end of the voice coil is accommodated in the magnetic circuit (magnetic field), and the other end is connected to the vibration plate, so the input electronic signal will cause the voice coil to move, and the action will be transmitted to the vibration plate and converted into sound energy (sound energy) ).

In this embodiment, the driver unit 3 will be described as a movable coil type actuator. That is, one end of the voice coil 31 is inserted into the magnetic gap of the magnetic circuit 32, and an electronic signal is applied to thereby move the voice coil 31. 31 drives. As shown in FIG. 3 , the voice coil 31 is formed by winding a coil wire 312 of a desired diameter for a desired number of turns on the outer peripheral end of a cylindrical bobbin 311 .

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

An installation plate 324 is arranged on the upper surface of the ferrite magnet 321 formed in a cylindrical shape, and a disc portion on which a yoke 322 having a cylindrical rod is arranged on the lower surface of the ferrite magnet 321. 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 outer diameter of the rod 323 is An annular gap with a predetermined width dimension is formed between the inner surface of the hole 324a in the central part of the plate 324, that is, the gap 33.

Also, the dimension in the depth direction 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 converged, so that a magnetic flux is generated in the gap 33 to form a magnetic gap. Next, a voice coil 31 is disposed at the center of the annular magnetic gap 33 .

Therefore, as shown in FIG. 2 , the cone-shaped vibrating plate 1 is inserted into a hole (hereinafter referred to as "neck") 1a of a predetermined size in the center thereof, and the voice coil 31 is inserted, and the neck 1a and the bobbin 311 Adhesive is applied to the contact portion of the outer periphery, thereby being connected and fixed to the driver unit 3 . On the other hand, for example, 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 to 12 .

First, as shown in FIG. 5, a cutout 313 is provided at the front end of the voice coil 31, and the end side 2a of the bending vibration plate 2 is inserted into the cutout 313 to fix the bending vibration plate 2, whereby the bending vibration plate 2 and the driver unit 3 can be connected. (voice coil 31) is directly connected. At this time, in order to transmit the vibration from the driver unit 3 to the bending vibration plate 1 efficiently, it is preferable to provide the notch 313 so that the end surface 2 a of the bending vibration plate 2 is substantially perpendicular to the voice coil 31 . catch.

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

In addition, as shown in FIG. 6, the front end of the sounding coil 31 is covered and fixed with a center cap (dust cap) 4, and the bending vibration plate 2 is fixed at the center of the center cap 4, so that the bending vibration plate 2 and the driver unit can be connected to each other. 3 (voice coil 31) is directly connected. Compared with the aforementioned means of providing a cutout 313 at the front end of the sounding coil 31 and inserting it into the end side 2a of the bending vibration plate 2, this means can reliably connect the bending vibration plate 2 and the driver unit 3 (voice coil 31). better.

The center cap (dustproof cap) 4 is installed for the purpose of preventing dust from entering the bobbin 311. It can use the same material as the cone-shaped paper to improve the unity of tone, or use a metal-based material to have a The function of the dome-type tweeter.

6 shows a state in which the bending vibration plate 2 is bent downward at one end side 2a to form an adhesive area, and the side (adhesive area) coated with the adhesive is attached to the front end of the voice coil 31 (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 transmit the vibration from the driver unit 3 to the flexural vibration plate 1 efficiently, it is preferable to bend and stick the one end side 2a so that the flexural vibration plate 2 is opposite to each other. The front end of the center cap 4 is substantially at right angles to each other.

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

Fig. 7 shows the state in which the bending vibration plate 2 is inserted into the cutout 41 provided on a horizontal straight line passing through the center of the voice coil 31 (bobbin 311) and the end side 2a coated with adhesive is thereby connected and fixed to the driver unit. 3. Also, the end side 2 a of the bending vibration plate 2 can be folded back toward the back side of the center cap 4 after being inserted into the notch 41 . Thereby, the possibility that the end side 2 a of the flexural vibration plate 2 falls off from the notch 41 can be minimized.

Also, as shown in FIG. 8 , the secondary cone 5 is covered and fixed at the front end of the sounding coil 31, and the bending vibration plate 2 is fixed at the center of the secondary cone 5, so that the bending vibration plate 2 and the driver unit 3 (sounding) The coil 31) is directly connected. In addition, compared with the aforementioned method of providing a cutout 313 at the front end of the sounding coil 31 and inserting the 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 (voice coil 31). It is better to see.

By using this sub-cone 5, the installation of the bending vibration plate 2 can be facilitated, and the sub-cone 5 itself can be directly attached to the front end of the voice coil 31 (bobbin 311) together with the conical vibration plate 1. The high range of the sound is more extended.

FIG. 8 shows the following state. The bending vibration plate 2 is bent downward at one end side 2a to form an adhesive area, and the side (adhesive area) coated with the adhesive is attached to the auxiliary plate covered at the front end of the voice coil 31 (bobbin 311). The surface of the cone 5 is thereby connected and fixed to the driver unit 3 . At this time, the flexural vibration plate 2 is the same as when it is pasted on the surface of the center cap 4. In order to efficiently transmit the vibration from the driver unit 3 to the flexural vibration plate 2, it is preferable to attach one end side to the flexural vibration plate 2. 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 approximately right angles.

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

FIG. 9A shows a state in which a reinforcing plate 21 similarly bent upwards at one end side is pasted on one end side 2a of a bending vibration plate 2 with one end side 2a bent downward, and the side formed by the bending (pasted) area) to apply adhesive, and stick to the surface of the center cap 4 covering the front end of the voice coil 31 (bobbin 311). Also, FIG. 9B shows the following state. The bending vibration plate 2 with the reinforcement plate 21 attached is pasted on the surface of the center cap 4 exposed in the center of the conical vibration plate 1, and then connected and fixed to the driver unit 3.

Also, FIG. 10A shows a state in which the reinforcing plate 22 is pasted on the upper surface of the end side 2a of the bending vibration plate 2 so that the end side 2a of the bending vibration plate 2 and the reinforcing plate 22 face in the cutout 41 provided in the center of the center cap 4. insert. Also, FIG. 10B shows the state in which the end side 2a of the bending vibration plate 2 of the additional reinforcement plate 22 coated with adhesive is inserted into the notch 41 of the center cap 4 exposed in the center of the cone-shaped vibration plate 1 and pasted to connect. Fixed to the drive unit 3.

Also, FIG. 11A shows a state in which a reinforcing plate 21 similarly bent upward at one end side is attached to the upper surface of one end side 2a of the bending vibration plate 2 with one end side 2a bent downward, and on the side formed by bending (Adhesive area) apply adhesive, and stick to the covering on the voice line The surface of the auxiliary cone 5 at the front end of the ring 31 (bobbin 311). Also, FIG. 11B shows the following state. The bending vibration plate 2 with the added reinforcement plate 21 is pasted on the surface of the secondary cone 5 exposed in the center of the conical vibration plate 1, and then connected and fixed to the driver unit 3.

Also, as shown in FIG. 12, the side edge portion 23a of the reinforcing plate 23 pasted on the end side 2a of the bending vibration plate 2 can be mounted on the surface of the conical vibration plate 1, whereby the bending vibration plate 2 and the driver unit 3 ( The voice coil 31) is indirectly connected.

12A shows a state in which a reinforcing plate 23 with side edge 23a bent upward is pasted on top of one end side 2a of bending vibration plate 2 with one end side 2a bent downward, and the bent side edge 23a is bent upward. Adhesive is applied to one side (pasting area) and the end surface of one end side 2a, and is pasted on the surface of the center cap 4 and the surface of the conical vibration plate 1 covering the front end of the voice coil 31 (bobbin 311). In addition, FIG. 12B shows the following state. The bending vibration plate 2 with the reinforcement plate 23 is pasted on 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 then connected and fixed to the driver unit 3.

In the speaker unit 10 configured as above, the small-diameter side 1a of the cone-shaped diaphragm 1 and the end surface 2a of the bending diaphragm 2 are connected together to the driver unit 3 (voice coil 31), and electronic signals are applied to the driver unit 3. etc., thereby causing the sounding coil 31 to vibrate according to the applied signal, and the vibration is transmitted to and driven by the conical vibration plate 1 and the bending vibration plate 2 connected to the sounding coil.

That is, one end (base end portion) of the voice coil 31 is housed in the magnetic circuit (magnetic field) 32, and the other end (front end portion) is connected to the conical vibrating plate 1 and the bending vibrating plate 2, so the input electrons The signal causes the voice coil 31 to move, and the movement is transmitted to the conical 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 direction of expansion 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 bending direction of the curved surface extending from the other end side 2b to the opposite end side 2a). When the flexural vibration plate 2 is viewed from the side (section), it is bowed in the direction of the plane.

Moreover, 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 with different shapes. That is, the small-diameter side 1a of the conical vibrating plate 1 and the end surface 2a of the bending vibrating plate 2 are connected to the driver unit 3 (voice coil 31), and the large-diameter side 1b of the conical vibrating plate 1 and the bending vibrating plate 2 The other end side 2b is connected to the supporting member 51 . The supporting member 51 is composed of a flat supporting plate 511 , 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 equipped with an opening (not shown) that can be inserted through the back side of the conical vibrating plate 1 on the top, and a conical support frame 9 for connecting the large diameter side 1b of the conical vibrating plate 1 is installed around the opening, by This allows the large-diameter side 1 b of the conical vibrating plate 1 to be connected to the support member 51 via the support plate 511 . In the figure, the support plate 511 is formed in a vertically long rectangular shape, but the shape is not particularly limited.

The protrusion 512 supports the leg 513 on which the other end side 2b of the flexural vibration plate 2 is installed, but the protruding front side is made so that it does not interfere (does not collide) when the flexural vibration plate 2 is installed. 512 a is formed as an arc-like curved surface substantially equal to the curvature of the flexural vibration plate 2 . Therefore, on the rear side of the flexural vibration plate 2 , the front surface 512 a of the convex portion 512 is located at a position not in contact with the rear surface of the flexural vibration plate 2 . The convex portion 512 functions as an aid to prevent the bending vibration plate 2 from being deformed by an external force from the front side.

Also, the back 512b of the convex portion 512 is not all installed on the support plate 511. As shown in FIG. In this way, it becomes one with an appropriate gap not in contact with the large-diameter side 1b of the conical vibrating plate 1.

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

The leg 513 holds the other end side 2b of the flexural vibration plate 2 to be mounted, but has a groove 513a on the upper surface along the width direction. The other end side 2b of the flexural vibration plate 2 is installed in the concave groove 513a, whereby the other end side 2b of the flexural vibration plate 2 is connected to the support member 51 via the leg 513.

In the speaker unit 20 constituted as above, the small-diameter side 1a of the conical vibrating plate 1 and the end surface 2a of the bending vibrating plate 2 are connected to the driver unit 3 (voice coil 31), and the large-diameter side of the conical vibrating 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 vibrating plate 1 can be stably supported by the supporting member 51, and the bending The vibrating plate 2 and the driver unit 3 make transportation easier and can be easily installed in the frame.

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

The frame body 50 is a box-shaped hollow structure for accommodating the conical vibrating plate 1, the bending vibrating plate 2, and the driver unit 3, and is formed as a skeleton structure, which is attached to the self-installed first loudspeaker. (Conical diaphragm 1) or the area in front of the second speaker (bending diaphragm 2) that emits sound has an open portion made of a frame.

When the above-mentioned first speaker unit 10 is installed in the frame body 50, for example, when the frame body 50 is made into a 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, the first speaker unit 10 It is installed on the front plate of the frame body 50 . Also, when the aforementioned second speaker unit 20 is installed on the frame body 50, the support plate 511 on which the cone-shaped vibration plate 1, the bending vibration plate 2, and the support member 51 of the driver unit 3 are installed can also serve as the front of the frame body 50. installed on the board.

Therefore, regardless of the case of any speaker unit, in the cone-shaped vibration plate 1 installed in the frame body 50, the large-diameter side 1b is connected to the support plate 511 of the support member 51 constituting a part of the frame body 50, and is connected with 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, explaining the opening in this case, it is more forward than the front plate constituting the frame body 50. The openings are, specifically, openings on the front, top, and left and right sides in the region from the support plate 511 of the support member 51 functioning as the front plate to the legs 513 . This opening part prevents the sound generated from the conical vibration plate 1 or the bending vibration plate 2 from staying, and effectively emits the sound to the outside.

In the speaker 100 constituted in the above manner, if the electronic signal is input to the driver unit 3, compared with the speaker system for the hearing-impaired and the normal-hearing in the past, it can become a speaker system with high performance, light weight, less installation area, and more speakers. A hybrid speaker system that is functional and allows the hearing-impaired and hearing-impaired to listen satisfactorily together.

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

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

Therefore, in the present invention, the sound from the dynamic first speaker equipped with the cone-shaped vibration plate is mixed with the sound from the second speaker equipped with the bending vibration plate, whereby sounds in a wider bandwidth can be reproduced (for the hearing-impaired). and sound waves for people with normal hearing). In addition, the driver unit for driving the conical vibrating plate is shared with the driver unit for driving the bending vibrating plate, so that the manufacturing cost and weight can be reduced. Furthermore, the first speaker and the second speaker are integrally connected, whereby the installation area can be reduced and compacted.

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

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

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