JP2012191323A - Speaker device equipped with electrodynamic exciter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker device equipped with an electrodynamic exciter of high efficiency in which an acoustic property is hard to degrade and a noise is hard to occur even if an electric wiring or piping is contacted.SOLUTION: The speaker device equipped with an electrodynamic exciter includes an electrodynamic exciter which contains a magnetic circuit part, a coil arranged in a magnetic gap which is formed at the magnetic circuit part, and a diaphragm to which the coil is secured and which is connected elastically to the magnetic circuit part so as to provide a predetermined gap from the magnetic circuit part, and a case where the diaphragm of the electrodynamic exciter is attached to a predetermined position on one surface. A vibration transmission suppressing part is provided around the diaphragm, on the one surface of the case where the diaphragm is attached.

Description

  The present invention is an electromotive exciter that is applied to a thin panel speaker that is used to reduce the thickness of various electronic devices such as a television and a personal computer, or that is applied to generation of a notification sound by being attached to an electric vehicle or the like. The present invention relates to an on-board speaker device.

  Conventionally, electromotive exciters have been widely used for thin panel speakers mounted on home appliances such as thin liquid crystal televisions, thin plasma televisions, thin personal computers, and various monitor devices for industrial machine tools. That is, the conventional electrodynamic exciter is composed of a saddle-shaped inner yoke, a permanent magnet, an outer yoke, a voice coil, a diaphragm, and an adhesive member, and the voice coil is located in the gap between the inner yoke and the outer yoke side wall. The diaphragm is fixed integrally with the voice coil. A diaphragm in which a voice coil vibrates in the axial direction by passing a current consisting of a predetermined signal through a voice coil in a magnetic circuit composed of a permanent magnet, an inner yoke and an outer yoke, and the voice coil is integrally fixed. A sound wave is emitted by exciting the.

  For example, an electrodynamic exciter according to Patent Document 1 is integrated with a voice coil on an axial end surface of a magnetic circuit composed of an inner yoke, a magnet, and an outer yoke by means of an elastic holding body such as foamed urethane. It has a structure in which a vibration member made of a fixed diaphragm is adhered.

  Patent Document 2 discloses a magnetic circuit composed of a bowl-shaped outer yoke, a plate-shaped magnet and an inner yoke that are sequentially stacked inside the outer yoke, and an inner peripheral portion of a side wall of the outer yoke of the magnetic circuit. A panel type speaker having a voice coil disposed in a gap formed between the outer periphery of the inner yoke and a sub-panel for holding the voice coil in front of the magnetic circuit is attached to a vehicle door or the like. Is described.

Japanese Patent Laying-Open No. 2005-354297 (FIG. 2) JP 2003-143690 A

  In the speaker device equipped with an electrodynamic exciter shown in FIG. 2 of Patent Document 1, a diaphragm equipped with the electrodynamic exciter is fixed to a housing via an elastic member such as a sponge. Moreover, the panel type speaker shown by patent document 2 is operating the vehicle door etc. as a diaphragm by attaching an electrodynamic exciter to the door etc. of a vehicle.

  A conventional speaker device equipped with an electrodynamic exciter is configured as described above, and is configured to generate sound by vibrating a diaphragm. This configuration is used for an approach notification device for an electric vehicle. When applied to the hood of an electric vehicle to be used for generating notification sound, the surrounding electrical wiring or piping may come into contact with the vibrating part, causing abnormal noise or changing acoustic characteristics. There was a problem to do.

The present invention has been made in order to solve the above-described problems of the conventional electrodynamic exciter-mounted speaker device. An object of the present invention is to provide an electrodynamic exciter-mounted speaker device that is less likely to occur and has high efficiency.

  The present invention includes a hook-shaped outer yoke, a magnetic circuit section including a magnet and an inner yoke disposed between the hook-shaped outer yokes, and a magnetic gap formed in the magnetic circuit section. And an electromotive exciter having a diaphragm elastically connected to the magnetic circuit unit so that the coil is fixed and has a predetermined gap between the coil and the magnetic circuit unit. In an electrodynamic exciter-equipped speaker device equipped with a housing equipped with a vibration plate of an electrodynamic exciter, vibration transmission is suppressed around one side of the housing equipped with the vibration plate A part is provided.

  According to the present invention, when used in the hood of an electric vehicle or the like, it is less likely to cause deterioration of acoustic characteristics or abnormal noise even when electrical wiring or piping is in contact with it. An exciter-mounted speaker device is obtained.

It is the schematic which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 1 of this invention. It is sectional drawing which shows the structure of a general electrodynamic exciter. It is a schematic plan view which shows another structure of the electrodynamic exciter loading speaker apparatus by Embodiment 1 of this invention. It is a schematic plan view which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 2 of this invention. It is a schematic plan view which shows another structure of the electrodynamic exciter loading speaker apparatus by Embodiment 2 of this invention. It is a schematic plan view which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 3 of this invention. It is a schematic plan view which shows another structure of the electrodynamic exciter loading speaker apparatus by Embodiment 3 of this invention. It is the schematic which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 4 of this invention. It is a schematic sectional drawing which shows another structure of the electrodynamic exciter loading speaker apparatus by Embodiment 4 of this invention. It is the schematic which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 5 of this invention. It is the schematic which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 6 of this invention. It is the partial schematic which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 7 of this invention. It is the partial schematic which shows the structure of the electrodynamic exciter loading speaker apparatus by Embodiment 7 of this invention.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing the configuration of an electrodynamic exciter-mounted speaker device according to Embodiment 1 of the present invention, FIG. 1 (a) is a plan view, and FIG. 1 (b) is A in FIG. 1 (a). It is sectional drawing in -A position. However, the sectional view of FIG. 1B does not show the detailed structure of the electrodynamic exciter 1 shown in FIG. The same applies to the cross-sectional views of FIG. In the electrodynamic exciter-equipped speaker device shown in FIG. 1, an electrodynamic exciter 1 having a magnetic circuit unit 10 and a diaphragm 11 is fixed to one surface of a housing 2 to be a vibrating body with, for example, screws 30. Yes. A slit (gap) 21 is provided on one surface to which the electrodynamic exciter 1 is fixed so as to surround three sides around which the diaphragm 11 of the electrodynamic exciter 1 is mounted. The slit 21 constitutes a vibration transmission suppressing portion that suppresses vibration transmission, and the inside of the slit 21 of the housing 2 forms a vibrating portion 22 that is excited by the diaphragm 11. As described above, the portion to be vibrated 22 to which the diaphragm 11 is attached is separated from the peripheral portion of the housing 2 by the slit 21 and has a cantilever structure.

  Here, a cross-sectional view of the structure of a general electrodynamic exciter 1 is shown in FIG. The magnetic circuit section 10 is composed of an inner yoke 12 made of a magnetic material, a flat magnet 13 made of a rare earth, and an outer yoke 14 made of a magnetic material having a bottom and side surfaces. One surface of the magnet 13 is in contact with the bottom surface of the outer yoke 14, and the other surface of the magnet 13 is in contact with the inner yoke 12 made of a magnetic material. The outer yoke 14, the magnet 13, and the inner yoke 12 are joined by an adhesive (not shown), and a magnetic circuit is provided with a gap (gap) between the radially outer peripheral surface of the inner yoke 12 and the side surface of the outer yoke 14. Part.

  A coil 16 wound around a bobbin 15 made of an insulating material is disposed so as to be positioned in the gap portion of the magnetic circuit, and the bobbin 15 around which the coil 16 is wound is integrally held by a thin flat plate-like diaphragm 11. Has been. The gap between the diaphragm 11 and the outer yoke 14 is filled with an elastic body 17. The elastic body between the diaphragm 11 and the magnetic circuit unit 10 may be provided between the diaphragm 11 and the inner yoke 12. Further, predetermined portions of the outer yoke 14 and the inner yoke 12 may be connected to the diaphragm 11 by an elastic body.

  In the electrodynamic exciter 1 configured as described above, when an alternating current is applied to the coil 16, the current of the coil 16 receives a force from a magnetic field formed in the gap portion by the magnetic circuit, and the coil 16 receives the magnetic circuit portion 10. Vibrates relative to Since the coil 16 is fixed to the diaphragm 11 via the bobbin 15, the diaphragm 11 vibrates with respect to the magnetic circuit unit 10. Since the vibration plate 11 is fixed to the vibrating portion 22 of the housing 2, when the vibrating plate 11 vibrates, the vibrating portion 22 also vibrates and generates a sound corresponding to the vibration. That is, the whole shown in FIG. 1 constitutes an electrodynamic exciter-mounted speaker device. The speaker device is used by being attached to a desired place with a screw or the like using an attachment hole 41 provided in the attachment wing 4 provided in the housing 2, for example.

In the case where the electrodynamic exciter-mounted speaker device according to the first embodiment is used as, for example, a sounding body of an approach notification device for an electric vehicle, the mounting location is a location where other equipment such as a hood is located nearby. It is possible to become. In such a place, electrical wiring, piping, etc. are stretched around. Therefore, when the electrodynamic exciter-mounted speaker device is attached to such a place, it is conceivable that electrical wiring or piping touches the casing. When a foreign object touches the vibrating portion of the speaker device, the foreign material vibrates, and there is a problem that an abnormal sound is generated by repeating contact and non-contact with the speaker device or an acoustic characteristic of the speaker device is changed. Here, it is the edge part of the outer periphery of a housing | casing that electrical wiring and piping have high possibility of touching. In the electrodynamic exciter-equipped speaker device according to the first embodiment, a slit 21 is provided as a vibration transmission suppressing unit that suppresses vibration transmission, and the electrodynamic exciter 1 vibrates the slit. It is the to-be-vibrated part 22 inside 21 and the edge part of the housing | casing 2 hardly vibrates. Therefore, even if the electrical wiring or piping touches the edge of the housing 2, no abnormal noise is generated, or even if it is generated, the noise is very small, and deterioration of acoustic characteristics can be suppressed. Further, since the vibrating portion 22 can freely vibrate compared with the case where there is no slit 21, the vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency, and sound can be generated with higher efficiency. The deterioration of the acoustic characteristics due to the attachment of the electrodynamic exciter 1 to the vibrating portion 22 of the housing 2 is small.

  In FIG. 1, the angle at which the slit 21 is viewed from the center 100 of the electrodynamic exciter 1 is indicated by θ, but the slit 21 is provided around the electric exciter 1 so that θ is 180 degrees or more. preferable. If the slit 21 is provided so that θ is 180 degrees or more, even if the electrical wiring or piping touches the edge of the housing 2, no abnormal noise is generated, or even if it occurs, the sound becomes very small and the acoustic characteristics are reduced. The effects of the present invention that the deterioration can be suppressed and the effect that the generation of sound can be performed with high efficiency and the deterioration of the acoustic characteristics are small are sufficiently achieved.

  FIG. 3 is a schematic plan view showing another configuration of the electrodynamic exciter-mounted speaker device according to Embodiment 1 of the present invention. 3, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In the speaker device of FIG. 3, as in FIG. 1, a slit 211 that is a vibration transmission suppressing portion is provided on the mounting surface of the electrodynamic exciter 1 of the housing 2, but the shape of the slit is different from that of FIG. 1. Different. The slit 21 in FIG. 1 is provided so as to surround the three sides around which the electrodynamic exciter 1 is attached, but the slit 211 in FIG. 3 is provided so that some slits also wrap around the other one side. It has been. As described above, since the slit 211 is provided not only in three directions but also in the other direction, the vibration of the other edge portion 221 of the edge portion of the housing 2 is illustrated in FIG. Compared with the structure of 1, it is less, the generation | occurrence | production of abnormal noise when an electrical wiring or piping touches this part is suppressed more, and deterioration of an acoustic characteristic is also suppressed. In addition, since the vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency and the generation of sound can be performed with higher efficiency, the electrodynamic exciter 1 can be vibrated by the casing 2. Deterioration of acoustic characteristics due to attachment to the portion 22 is further reduced.

Embodiment 2. FIG.
FIG. 4 is a schematic plan view showing a configuration of an electrodynamic exciter-mounted speaker device according to Embodiment 2 of the present invention. 4, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In the electrodynamic exciter-mounted speaker device of FIG. 4, a slit (gap) 212 serving as a vibration transmission suppressing portion is provided on the mounting surface of the electrodynamic exciter 1 of the housing 2 as in FIGS. 1 and 3. However, the shape of the slit is different from those in FIGS. The slit 212 in FIG. 4 is provided with a slit so as to surround the four sides of the electrodynamic exciter 1, and there are two connecting portions 24 that connect the peripheral portion of the housing 2 and the portion to be vibrated 22 inside the slit 212. There are places. As described above, the slit 212 is provided so as to surround the periphery of the electrodynamic exciter 1, but is divided into two as slits by the two connecting portions 24. Since the slit 212 which is a vibration transmission suppressing portion is provided so as to surround the electrodynamic exciter 1, the vibration of the portion to be vibrated 22 is not easily transmitted to the peripheral portion of the casing 2, and the edge of the casing 2 The generation of abnormal noise when the electrical wiring or piping touches is further suppressed, and the deterioration of the acoustic characteristics is also suppressed. Further, since it can vibrate more freely than when there is no slit 212, vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency, sound can be generated with higher efficiency, and electrodynamic type. Deterioration of acoustic characteristics due to mounting of the exciter 1 on the vibrating portion 22 of the housing 2 is small. Furthermore, since the two connection portions 24 are provided, the structure is strong in strength.

  FIG. 5 is a schematic plan view showing another configuration of the electrodynamic exciter-mounted speaker device according to the second embodiment of the present invention. 5, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In the speaker device of FIG. 5, similarly to FIG. 4, a slit 213 that is a vibration transmission suppressing portion is provided on the mounting surface of the electrodynamic exciter 1 of the housing 2 so as to surround the periphery of the electrodynamic exciter 1. However, the shape of the slit is different from FIG. The slit 213 in FIG. 5 is provided with a slit independently for each side, and is divided into four as slits by the four connection portions 24. Since the slit 213 serving as a vibration transmission suppressing portion is provided so as to surround the electrodynamic exciter 1, the vibration of the portion to be vibrated 22 is not easily transmitted to the peripheral portion of the housing 2, and the edge portion of the housing 2. The generation of abnormal noise when the electrical wiring or piping touches is further suppressed, and the deterioration of the acoustic characteristics is also suppressed. Further, since it can vibrate more freely than when there is no slit 213, the vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency, sound can be generated with higher efficiency, and the electrodynamic type. Deterioration of acoustic characteristics due to mounting of the exciter 1 on the vibrating portion 22 of the housing 2 is small. Furthermore, since the four connection portions 24 are provided, the structure is strong in strength.

  As described above, in the electrodynamic exciter-equipped speaker device according to the second embodiment, the vibration transmission suppressing unit surrounds the electrodynamic exciter 1 around the electromotive exciter 1 of the housing 2. The slits 212 and 213 are provided, and a plurality of connection parts 24 are provided to connect the peripheral part of the housing 2 and the vibration part 22 that is the inside of the slits 212 or 213 so that the slits are divided. The slits 212 and 213 prevent the vibration of the vibrating portion 22 from being transmitted to the peripheral portion of the casing 2, so that abnormal noise is generated when the electrical wiring or piping touches the edge of the casing 2. Further, the deterioration of acoustic characteristics can be suppressed. Further, since the vibration part 22 can vibrate freely as compared with the case without the slit 212 or 213, the vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency, and the generation of sound can be performed with higher efficiency. In addition to being able to do so, there is little deterioration in acoustic characteristics caused by mounting the electrodynamic exciter 1 on the vibrating portion 22 of the housing 2. Further, since a plurality of connection portions 24 are provided, the structure is strong in strength.

Embodiment 3 FIG.
FIG. 6 is a schematic plan view showing a configuration of an electrodynamic exciter-mounted speaker device according to Embodiment 3 of the present invention. 6, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In the electrodynamic exciter-equipped speaker device of FIG. 6, as in FIG. 1, a slit 21 is provided on the mounting surface of the electrodynamic exciter 1 of the housing 2, and a part of the slit 21 absorbs vibration. This is filled with a vibration absorbing member 23 that suppresses vibration transmission. The vibration absorbing member 23 is made of a material such as soft rubber. Although the vibration absorbing member 23 is provided in a part of the slit 21, even in this configuration, it is the vibration part 22 inside the slit 21 that is vibrated by the electrodynamic exciter 1 and suppresses vibration transmission. Since the transmission of vibrations to the surroundings is suppressed by the slits 21 and the vibration absorbing member 23 constituting the part, the vibration of the edge of the housing 2 is suppressed. Therefore, even if the electrical wiring or piping touches the edge of the housing 2, no abnormal noise is generated, or even if it is generated, the noise is very small, and deterioration of acoustic characteristics can be suppressed. 1 has a cantilever structure, and the vibrating portion 22 easily vibrates, but is slightly weak in strength. On the other hand, in the configuration of FIG. 6, a part of the slit is filled with the vibration absorbing member 23, and the vibration absorbing member 23 also serves as a support as a vibration width limiting member that limits the maximum vibration width of the vibrating portion 22. The structure is stronger than the structure shown in FIG.

  FIG. 7 is a plan view showing another configuration of the electrodynamic exciter-mounted speaker device according to Embodiment 3 of the present invention. 7, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In the electrodynamic exciter-equipped speaker device of FIG. 7, a slit is provided on the mounting surface of the electrodynamic exciter 1 of the housing 2 as in FIGS. 1 and 6, and the entire inside of the slit absorbs vibration. It is filled with a vibration absorbing member 231 that suppresses vibration transmission. The vibration absorbing member 231 is made of a material such as soft rubber. Also in this configuration, what is vibrated by the electrodynamic exciter 1 is the vibrated portion 22 inside the portion where the vibration absorbing member 231 is provided, and the edge portion of the housing 2 does not vibrate. Therefore, even if the electrical wiring or piping touches the edge of the housing 2, no abnormal noise is generated, or even if it is generated, the noise is very small, and deterioration of acoustic characteristics can be suppressed. Further, since the slit is filled with the vibration absorbing member 231, there is an effect of preventing intrusion of water or dust from the outside to the inside of the housing 2. In terms of strength, the structure is stronger than that of FIG. In addition, when the slit is filled with the vibration absorbing member 231, it goes without saying that the vibration transmission suppressing effect is further enhanced by, for example, making the cross-sectional shape of the vibration absorbing member a groove to give a certain degree of bending.

  Further, in the configurations of FIG. 3 of the first embodiment and FIGS. 4 and 5 of the second embodiment, as in the third embodiment, a part or the whole of the slit may be filled with the vibration absorbing member. . In these cases as well, the electrodynamic exciter 1 vibrates the vibrated portion 22 inside the portion where the vibration absorbing member is provided, and the edge of the housing 2 does not vibrate. Even if the pipe touches the edge of the housing 2, no abnormal noise is generated, or even if it is generated, the sound is very small, and the deterioration of the acoustic characteristics can be suppressed. In addition, since the portion to be vibrated 22 can vibrate freely as compared with the case where there is no vibration transmission suppressing portion such as a slit or a vibration absorbing member, the vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency. Sound can be generated with high efficiency, and the deterioration of acoustic characteristics caused by mounting the electrodynamic exciter 1 on the vibrating portion 22 of the housing 2 is small. Further, when the entire slit is filled with the vibration absorbing member, there is an effect of preventing entry of water, dust, and the like from the outside to the inside of the housing 2.

Embodiment 4 FIG.
FIG. 8 is a schematic diagram showing a configuration of an electrodynamic exciter-mounted speaker device according to Embodiment 4 of the present invention, where FIG. 8 (a) is a plan view, and FIG. 8 (b) is A in FIG. 8 (a). It is sectional drawing in the position of -A line | wire. 8, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. The dynamic exciter-mounted speaker device of FIG. 8 is provided with stepped portions by two bent portions 241 and 242 that are bent in opposite directions to each other, and is a vibration-receiving portion that is a surface on which the electrodynamic exciter 1 is mounted. 22 is present inside the housing 2.

  Also in the configuration of FIG. 8, a gap 214 that is a vibration transmission suppressing portion is provided around the vibration portion 22, so that vibration of the vibration portion 22 is not transmitted to the outside of the gap 214, and the housing 2 The edges of the do not vibrate. Therefore, even if the electrical wiring or piping touches the edge of the housing 2, no abnormal noise is generated, or even if it is generated, the noise is very small, and deterioration of acoustic characteristics can be suppressed. In addition, since the vibrated portion 22 can vibrate freely as compared with the case where there is no gap 214 which is a vibration transmission suppressing portion, the vibration of the vibration plate 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency and generation of sound. Can be performed with high efficiency, and there is little deterioration in acoustic characteristics caused by mounting the electrodynamic exciter 1 on the portion to be vibrated 22 of the housing 2. Furthermore, since the vibrating part 22 is present inside the peripheral part of the housing, the electric wiring and the piping are difficult to touch the vibrating part 22.

  FIG. 9 is a schematic cross-sectional view showing another configuration of the electrodynamic exciter-mounted speaker device according to the fourth embodiment of the present invention, and corresponds to FIG. 8B. 9, the same reference numerals as those in FIG. 8 denote the same or corresponding parts. In the electrodynamic exciter-mounted speaker device of FIG. 9, a vibration absorbing member 232 that absorbs vibration and suppresses vibration transmission is provided in a part or the whole of the gap 214 having the configuration of FIG. The vibration absorbing member 232 is made of a material such as soft rubber. Also in this configuration, the vibration absorbing member 232 and the gap serving as the vibration transmission suppressing portion suppress the transmission of the vibration of the portion to be vibrated 22 to the peripheral portion of the casing 2, Even if the pipe touches, no abnormal noise is generated, or even if it is generated, a very small sound is generated, and deterioration of acoustic characteristics can be suppressed. In addition, since the vibrated portion 22 can vibrate freely as compared with the case where there is no vibration transmission suppressing portion, the vibration of the diaphragm 11 of the electrodynamic exciter 1 can be transmitted with higher efficiency, and sound generation can be performed with higher efficiency. In addition to being able to do so, there is little deterioration in acoustic characteristics caused by mounting the electrodynamic exciter 1 on the vibrating portion 22 of the housing 2. Furthermore, since the vibrating part 22 is present inside the peripheral part of the housing, the electric wiring and the piping are difficult to touch the vibrating part 22. Further, since the vibration absorbing member 232 also serves as a support as a vibration width limiting member that limits the maximum vibration width of the portion to be vibrated 22, the configuration is stronger than that of the configuration of FIG. Further, by providing the vibration absorbing member 23 in the entire gap 214 having the configuration shown in FIG. 8, there is an effect of preventing intrusion of water, dust, and the like from the outside to the inside of the housing 2.

Embodiment 5 FIG.
FIG. 10 is a diagram showing a configuration of an electrodynamic exciter-mounted speaker device according to Embodiment 5 of the present invention. FIG. 10 (a) is a plan view, and FIG. 10 (b) is an A- FIG. 10C is a cross-sectional view at the BB position in FIG. 10A. 10, the same reference numerals as those in FIG. 8 denote the same or corresponding parts. In the electrodynamic exciter-mounted speaker device of FIG. 10, the frame 42 is provided on the edge of the portion of the housing 2 that faces the vibrating portion 22. In addition, as a vibration width limiting member for limiting the maximum deflection width of the tip of the vibrating portion 22 having a cantilever structure, a spring 216 and a spring 216 between the tip of the vibrating portion 22 and the frame 42 and the lower frame 43 of the housing A spring 215 was provided. It goes without saying that only one of the spring 215 and the spring 216 may be provided as a spring, and a vibration absorbing member such as rubber may be provided in a part or the whole of the gap 214 instead of the spring 215. Alternatively, as in FIG. 8, a configuration in which nothing is provided only by the gap 214 may be used.

  According to this configuration, since the edge of the housing 2 has a frame structure, the strength of the housing 2 is increased. Further, as in the fourth embodiment, the gap and the vibration absorbing member prevent the vibration of the portion to be vibrated 22 from being transmitted to the peripheral portion of the casing 2, so that the electrical wiring and piping touch the peripheral portion of the casing 2. Even if it does, abnormal noise does not occur, or even if it occurs, it becomes very quiet, and deterioration of acoustic characteristics can be suppressed. In addition, since the vibrated portion 22 exists inside the peripheral portion of the housing, the electrical wiring and piping are more difficult to touch the vibrated portion 22. Further, a structure provided with a vibration width limiting member that limits the maximum deflection width at the tip of the vibrating portion 22 has a stronger structure.

Embodiment 6 FIG.
FIG. 11 is a schematic diagram showing the configuration of an electrodynamic exciter-mounted speaker device according to Embodiment 6 of the present invention, and FIG. 11 (a) is a plan sectional view taken along the line CC in FIG. 11 (b). 11B is a side cross-sectional view at the AA position in FIG. 11A, and FIG. 11C is a side cross-sectional view at the BB position in FIG. 11A. 11, the same reference numerals as those in FIG. 10 denote the same or corresponding parts. In the electrodynamic exciter-equipped speaker device of FIG. 11 according to the fifth embodiment, the housing 2 is a box, and a gap is provided on a part of one surface thereof, similar to the fourth and fifth embodiments. The oscillated portion 22 is caused to exist inside the casing 2 which is a box body by the two-stage folding portions 241 and 242.

  In the configuration of FIG. 11, since the back surface of the electrodynamic exciter 1 is covered with the housing 2, the sound radiated from the vibrating portion 22 is directed toward the front surface of the vibrating portion 22 (FIG. 11B and It is emitted only in the direction indicated by the arrow in FIG. In addition, the back space of the electrodynamic exciter 1 becomes an acoustic space, and sound is radiated from the opening of the gap 214 around the vibrating portion 22 toward the front. Can be emphasized.

Embodiment 7 FIG.
The casing 2 in the above first to sixth embodiments can be integrally formed by bending a metal plate including the vibrating portion 22. Or the housing | casing 2 can also be integrally formed by resin molding including the to-be-vibrated part 22. FIG. As described above, the housing 2 including the vibrating portion 22 is integrally configured by bending a metal plate or by resin molding, so that the speaker device with an electromotive exciter that is easy to manufacture and strong in strength. Can be obtained.

  In addition, the fastening of the diaphragm 11 and the diaphragm 22 shown in the first to sixth embodiments is a method of fastening with a plurality of screws to the circumferential portion of the diaphragm, but a protrusion is provided at the center of the diaphragm 11. The following method of fastening the vibration plate 22 and the vibration plate 11 by providing, female screw or male screw processing may be used. As shown in FIG. 13, a screw 110 is fixed to the diaphragm 11, a flaw hole is provided in the vibration plate 22, and the nut 50 is fastened to the vibration plate 22. Further, as shown in FIG. 14, the vibration plate 11 may be provided with a convex portion 111, a female screw may be provided on the convex portion 111, and the vibration plate 22 and the vibration plate 11 may be fastened with a bolt 51.

1: Electrodynamic exciter 2: Housing 10: Magnetic circuit unit 11: Diaphragm 12: Inner yoke 13: Magnet 14: Outer yoke 16: Coil 17: Elastic body
21, 211, 212, 213, 214: slit (vibration transmission suppressing unit)
22: Vibrated portion 23, 231, 232: Vibration absorbing member 215, 216: Spring (vibration width limiting member) 241, 242: Bending portion

Claims (11)

An outer yoke having a bottom and side surfaces, an inner yoke surrounded by the outer yoke and having a gap between the outer yoke, and an outer yoke disposed between the bottom of the outer yoke and the inner yoke. A magnetic circuit section having a magnet,
A coil disposed in the gap between the outer yoke and the inner yoke;
An electrodynamic exciter having a diaphragm elastically coupled to the magnetic circuit unit so that the coil is fixed and has a predetermined gap between the magnetic circuit unit;
In the electrodynamic exciter-equipped speaker device, comprising: a housing having a vibration part that is a surface on which the diaphragm of the electrodynamic exciter is mounted at a predetermined position;
An electrodynamic exciter-mounted speaker device, wherein a vibration transmission suppressing portion is provided around the vibrating portion.   The electrodynamic exciter-equipped speaker device according to claim 1, wherein the vibration transmission suppressing unit is configured by a gap.   3. The electrodynamic exciter-mounted speaker device according to claim 2, wherein the vibration transmission suppressing unit is provided so that an angle facing the center of the electrodynamic exciter is 180 degrees or more.   2. The electrodynamic exciter-mounted speaker device according to claim 1, wherein at least a part of the vibration transmission suppressing portion is configured by a vibration absorbing member made of a member that absorbs vibration.   4. The electrodynamic exciter-equipped speaker device according to claim 3, wherein the vibrating portion has a cantilever structure.   6. The electrodynamic exciter-mounted speaker device according to claim 5, further comprising a vibration width limiting member that limits a maximum swing width of the cantilever structure.   The electrodynamic exciter-equipped speaker device according to claim 1, wherein the vibration part is present inside the housing.   The electrodynamic exciter-equipped speaker device according to claim 7, wherein the vibrating portion has a step-fold structure.   The electrodynamic exciter-equipped speaker device according to claim 1, wherein the vibration transmission suppressing unit is divided into a plurality of portions around the vibrating unit.   The electrodynamic exciter-mounted speaker device according to claim 1, wherein the housing is a box.   11. The electrodynamic exciter-mounted speaker device according to claim 1, wherein the casing includes the vibrating portion and is integrally configured by metal plate or resin molding.

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