JP6393861B1 - Speaker unit support structure and sound device - Google Patents

Abstract

The present invention provides a speaker unit support structure and a sound device that suppresses the vibration of a speaker unit (diaphragm) from being transmitted to other parts such as a suspension member and realizes faithful sound reproduction.
A speaker unit is suspended from a suspension member via a suspension rod. The suspension rod 2 is supported by the suspension member 3 via the vibration transmission suppressing material 4. The diaphragm 1a of the speaker unit 1 is provided downward.
[Selection] Figure 1

Description

  The present invention relates to a speaker unit support structure and an audio device.

  In a conventional speaker system, a speaker unit is generally fixed to a speaker housing. Since the diaphragm of the speaker unit is fixed to the unit frame, the unit frame is a member through which vibration from the diaphragm is most transmitted.

  Therefore, vibration is transmitted from the diaphragm to the speaker casing via the unit frame, and the speaker casing generates a modulated sound. Further, the vibration transmitted to the speaker housing returns to the diaphragm via the unit frame and generates a modulated sound from the diaphragm. Those modulated sounds obstruct faithful sound reproduction.

  It has a substantially cylindrical shape, is fixed so as to substantially cover the speaker unit except for the front and rear surfaces of the diaphragm on one bottom surface of the cylindrical shape, and has an opening on the other bottom surface of the cylindrical shape. A speaker housing having a structure having one end, a support rod fixed at one end to the back surface of the magnet of the speaker unit, and extending to the other end of the support rod to hold the support rod in a substantially vertical direction, and There has been proposed one that includes a weight that attenuates and suppresses vibration transmitted from the magnet to the support bar by grounding the magnet acoustically and virtually (see, for example, Patent Document 1).

JP 2001-224089 A

  However, since the speaker unit (unit frame) is in contact with and supported by the speaker housing via a cushioning material, the vibration described in Patent Document 1 is transmitted to the speaker housing and solves the generation of modulated vibration. I can't.

  The present invention provides a support structure for a speaker unit and an audio device that suppresses transmission of vibration of the speaker unit (diaphragm) to other parts and realizes faithful sound reproduction.

The invention according to claim 1, and the speaker units, and the suspension member the speaker unit is suspended, and a suppressing vibration transmission suppression means transmission of vibrations to the suspension member from the speaker unit, the speaker unit A unit holding member that is suspended from the suspension member so that the diaphragm is directed downward or upward, and that has an upper end portion provided on the suspension member and that holds the speaker unit at the lower end portion; Has a threaded rod portion, and the unit holding member is fixed above the suspension member so that the vertical position of the speaker unit can be adjusted by one or more nuts relative to the suspension member. It is characterized by that. Here, “downward or upward” includes not only the case where the vibration direction of the diaphragm is the vertical direction, but also the case where the diaphragm is inclined with respect to the vertical direction.

In this way, the speaker unit is suspended by the suspension member so that the diaphragm is directed downward or upward, and vibration transmission from the speaker unit to the suspension member is suppressed by the vibration transmission suppression means. Therefore, the swing of the speaker unit (diaphragm) is suppressed, and the vibration of the speaker unit is suppressed from propagating to the suspension member. Therefore, generation of modulated sound in the suspension member or the like is avoided, and faithful sound reproduction is realized.
In addition, the vertical position of the speaker unit held by the unit holding member can be easily adjusted. Therefore, by adjusting the position, it is possible to prevent the frame of the speaker unit from coming into contact with other components and transmitting the vibration of the speaker unit.

The invention of claim 2 includes a speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppressing means for suppressing vibration transmission from the speaker unit to the suspension member. The vibration transmission suppression further includes a unit holding member that is suspended from the suspension member so that the diaphragm is directed downward or upward, and that has an upper end portion provided on the suspension member and that holds the speaker unit at a lower end portion. The means is a vibration transmission suppressing material provided between an upper end portion of the unit holding member and the suspension member .

  In this way, it is possible to easily realize a structure in which vibration transmission suppressing means is provided between the speaker unit and the suspension member. And even if it is going to transmit the vibration of a speaker unit (diaphragm) to a suspension member, transmission is suppressed by the vibration transmission suppression material, and generation | occurrence | production of the modulation | alteration sound in a suspension member is avoided.

The invention of claim 3 includes a speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppression means for suppressing vibration transmission from the speaker unit to the suspension member. A unit holding member that is suspended from the suspension member so that the diaphragm is directed downward or upward, and that has an upper end portion provided on the suspension member and that holds the speaker unit at the lower end portion; has an insertion member to the suspension member is inserted into the upper end portion, the vibration transmission suppression means is provided between the suspension member and the upper portion of the unit holding member, that Features.

In this way, the suspension member is inserted into the insertion portion of the unit holding member so that the unit holding member is suspended by the suspension member, and vibration transmission suppressing means is provided between them. The vibration of the speaker unit is suppressed from being transmitted to the suspension member.

The invention of claim 4 includes a speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppression means for suppressing vibration transmission from the speaker unit to the suspension member. The vibration transmission suppression further includes a unit holding member that is suspended from the suspension member so that the diaphragm is directed downward or upward, and that has an upper end portion provided on the suspension member and that holds the speaker unit at a lower end portion. means a feature and a plurality of magnets repelling force is arranged to produce, the unit holding member with magnet lifted by using the repulsive force has a structure to float from the suspension member, the To do.

  If it does in this way, the vibration transmission suppression means provided between a speaker unit and a suspending member is realizable with a simple structure by utilizing the repulsive force by a some magnet.

In order to provide the support structure for the speaker unit according to claim 2 or 4, as described in claim 5 , the suspension member has a suspension portion provided with an upper end portion of the unit holding member, It is desirable that the suspension part has a through hole through which the unit holding member passes, and the unit holding member is suspended in a state where the unit holding member is not in contact with a peripheral part of the through hole.

  In this way, contact between the upper end portion of the unit holding member and the hanging portion is avoided, and the vibration of the speaker unit (diaphragm) is reliably suppressed from being transmitted to the hanging portion (hanging member). Is done.

Preferably, the speaker unit is provided with a weight that attenuates unnecessary vibration of the speaker unit.
In this way, propagation of unnecessary vibration between the speaker unit and the suspension member is suppressed by the acoustic impedance of the weight. Furthermore, since the weight functions as a stator with respect to the reciprocating motion of the diaphragm of the speaker unit, accurate sound reproduction is realized.
A seventh aspect of the present invention is an acoustic device, comprising the speaker unit support structure according to any one of the first to sixth aspects.

  In this way, the generation of modulated sound is avoided and faithful sound reproduction is realized.

  In the present invention, the speaker unit is suspended from the suspension member so that the diaphragm is directed downward or upward, and vibration transmission from the speaker unit to the suspension member is suppressed by the vibration transmission suppression means. It is possible to suppress the vibration of the speaker unit (diaphragm) from being transmitted to the suspension member, and avoid the generation of modulated sound in the suspension member. Therefore, faithful sound reproduction by the speaker unit can be realized.

It is explanatory drawing which shows one Embodiment of the support structure of the speaker unit which concerns on this invention. It is explanatory drawing of the relationship between a unit holding member and a suspension member. It is a figure which shows another embodiment of the said support structure. It is a figure which shows another embodiment of the said support structure. It is explanatory drawing which shows the relationship between a speaker unit and a mounting plate. It is a figure which shows another embodiment of a suspension member. It is a figure which shows embodiment in the case of providing inside an audio equipment etc. (A) (b) (c) (d) is a figure which shows other embodiment of the said support structure, respectively. It is a figure which shows other embodiment of the said support structure. (A) and (b) are figures which show other embodiment of the said support structure, respectively. It is a figure which shows other embodiment of the said support structure. (A) is a figure which shows the magnet unit which can be utilized as a vibration transmission suppression means, (b) (c) is a figure which shows embodiment in the case of utilizing the said magnet unit, respectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an explanatory view showing an embodiment of a support structure for a speaker unit according to the present invention, and FIG. 2 is an explanatory view of a relationship between a unit holding member and a suspension member.

  As shown in FIG. 1, the speaker unit 1 is supported by being suspended from a suspension member 3 via a bolt-shaped suspension rod 2 (unit holding member). In this embodiment, the speaker unit 1 is embedded in the ceiling. This is applied to built-in speakers (audio devices). That is, this speaker has at least the speaker unit 1, the hanging rod 2, and the hanging member 3.

  The speaker unit 1 is suspended from the suspension member 3 so that the diaphragm 1a faces downward, and a vibration transmission suppression member 4 (vibration transmission suppression means) is disposed between the speaker unit 1 and the suspension member 3. Yes. Here, the vibration transmission suppressing material 4 is not limited as long as it suppresses transmission of vibration between the hanging portion 3b and the hanging rod 2, and for example, gel can be used. In addition, rubber, felt, urethane sponge, bubble cushioning material (consisting of two polyethylene sheets, air is trapped in a cylindrical projection formed by molding one sheet, and the function of the cushioning material is realized by the air pressure. A cushioning material such as a thing such as bubble wrap (registered trademark) can be used as a vibration transmission suppressing member, or a damping metal (for example, D2052 (registered trademark)) can be used. “Hanging on the suspension member 3 so that the diaphragm 1a faces downward” means that the speaker unit 1 is suspended, so that the supporting direction of the speaker unit 1 and the vibration of the diaphragm 1a of the speaker unit 1 are vibrated. Although the direction is the same, the central axis of the speaker unit 1 does not have to be in the vertical direction, and may be suspended while being inclined with respect to the vertical direction.

  Since the speaker unit 1 is structured to be suspended and supported with the vibration transmission suppressing material 4 sandwiched so that the diaphragm 1a faces downward, the hanging member 3 determines the weight of the speaker unit 1 as the vibration transmission suppressing material 4. Receive with a sandwich. Therefore, the transmission of vibration from the frame 1b (unit frame) of the speaker unit 1 to the suspension member 3 side is suppressed by the vibration transmission suppressing member 4 arranged in the middle of the vibration transmission path. That is, by providing the vibration transmission suppressing material 4, vibration transmission from the frame 1b to the suspension member 3 side is blocked at the provided portion.

  The suspension member 3 has a gate shape including two column portions 3a and 3a extending in the vertical direction and a plate-like suspension portion 3b extending in the horizontal direction by connecting the upper ends thereof, and the both column portions 3a and 3a. Is attached to the mounting plate 7. The suspension member 3 attenuates vibration transmitted to the mounting plate 7 by giving a physical distance to a vibration transmission path from the speaker unit 1 to the mounting plate 7. Therefore, the suspension member 3 is desirably a material having high internal loss and rigidity for supporting the speaker unit 1.

  In addition, the suspension member can also have a pillar part and a suspension part as an integral structure. Further, the pillar portions 3a, 3a may be structured to be supported by being coupled to a ceiling plate or the like of the installation room without coupling the lower end to the mounting plate 7.

  In the speaker unit 1, a voice coil (not shown) fixed to the diaphragm 1 a is placed in the magnetic circuit 1 c, and the diaphragm 1 a is moved (vibrated) by flowing an audio current to generate sound waves (coherent waves). Is generated. The diaphragm 1a and the magnetic circuit 1c are attached to the frame 1b. In this embodiment, the speaker unit 1 is attached via the suspension member 3 so that the attachment plate 7 is attached so as to close the attachment hole provided in the ceiling, thereby providing a ceiling-embedded speaker. In addition, 1d is a voice cap.

  In addition, the frame portion of the speaker unit 1 is provided such that the flange portion 1ba is positioned below the mounting plate 7, and a sound insulating material 5 is interposed between the flange portion 1ba and the periphery of the through hole 7a of the mounting plate 7. It is provided to prevent sound leakage between them. Since the sound insulating material 5 does not support the weight of the speaker unit 1, it does not require the physical strength required for the vibration transmission suppressing material 4. That is, since the mounting plate 7 does not support the weight of the speaker unit 1, the vibration of the speaker unit 1 is suppressed from being transmitted not only to the hanging member 3 side but also to the mounting plate 7 side. Therefore, it is more advantageous in realizing faithful sound reproduction by the speaker unit 1.

  As the sound insulating material 5, a material having both adhesiveness, flexibility, and the property of not transmitting vibration is suitable, and the material is not particularly limited. For example, cloth, gel, urethane foam, rubber, leather, felt and the like can be used. The sound insulating material can be omitted.

  The speaker unit 1 is supported by being suspended from a suspension member 3 via a suspension rod 2 that holds the speaker unit 1 at the lower end. That is, it is a support structure similar to a pendulum, and is supported at one place (fulcrum) in the hanging portion 3b. Further, as shown in FIG. 2, the hanging rod 2 is a bolt having a threaded rod portion, and a speaker unit 1 is provided with a weight 6 (stabilizer) sandwiched at the lower end. The weight 6 is a weight body for attenuating unnecessary vibration of the speaker unit 1 and is provided in the speaker unit 1. In this structure, since the weight applied to the speaker unit 1 is not supported by the unit frame, the weight 6 can be made heavy without considering the strength of the unit frame.

  As described above, when the weight 6 and the magnetic circuit 1c are held at the lower end portion of the hanging rod 2, a stable support structure is obtained, and an advantageous layout for suppressing unnecessary vibration of the speaker unit 1 can be obtained.

  The upper part of the suspension bar 2 penetrates the suspension part 3b, and is attached to the suspension part 3b using the two nuts 11 and 11 and the flat washer 12 above the suspension part 3b. A sheet-like vibration transmission suppressing material 4 (for example, gel) is sandwiched between the flat washer 12 and the hanging portion 3b. Here, the flat washer 12 functions as a receiving body for the hanging rod 2 (unit holding member).

  The diameter of the through hole of the hanging part 3 b is formed to be larger than the screw diameter of the hanging bar 2. As a result, the suspension bar 2 does not come into contact with the periphery of the through hole of the suspension part 3b, so that it is attached in a floating state. Therefore, the transmission of vibration from the hanging rod 2 (speaker unit 1) to the hanging portion 3b is blocked (or relaxed) by the vibration transmission suppressing member 4.

  By adjusting the positions of the nuts 11 and 11 with respect to the screw rod 2, the vertical position of the speaker unit 1 can be adjusted and fixed. The vertical position of the speaker unit 1 can also be adjusted by adjusting the length of the lower end threaded portion of the hanging rod 2 that is inserted into the weight 6.

  Since the sheet-like vibration transmission suppressing material 4 is provided between the hanging member 3 and the hanging rod 2, the vibration system of the complex of the speaker unit 1 and the hanging rod 2, the mounting plate 7, The vibration system of the complex with the suspension member 3 can be separated. That is, the vibration of the complex of the speaker unit 1 and the hanging rod 2 is transmitted to the hanging member 3 and the mounting plate 7, and the vibration of the complex of the mounting plate 7 and the hanging member 3 is suspended. Transmission to the lower bar 2 and the speaker unit 1 is suppressed, and faithful sound reproduction is realized.

  In addition, since the vibration transmission suppressing material 4 is used, the suspension member 3 and the suspension rod 2 are not firmly fixed, and the mobility that moves like a pendulum is secured, so that incidental sound due to mechanical stress is generated. Is to be suppressed.

  As described above, the suspension rod 2 that holds the speaker unit 1 is suspended and supported by the suspension member 3 via the vibration transmission suppressing member 4, and the diaphragm 1 a of the speaker unit 1 is supported downward. Therefore, the transmission of vibration from the speaker unit 1 to the suspension member 3 is suppressed, the generation of modulated sound in other parts such as the suspension member 3 is suppressed, and faithful sound reproduction is realized. .

  By the way, in the speaker unit 1, when an electromagnetic force corresponding to the sound current is generated in the voice coil, a reverse force is generated in the magnetic circuit 1c in accordance with the law of action and reaction. Therefore, the magnetic circuit 1c needs to be spatially fixed in order to cause the diaphragm 1a to which the voice coil is coupled to perform the amplitude movement faithfully. Therefore, the weight 6 (stabilizer) which is a heavy body is provided in the vicinity of the magnetic circuit 1c as a stator, thereby enabling faithful movement of the diaphragm 1a. The weight 6 is desirably a material having a high specific gravity and a low natural vibration. Further, it is important for accurate sound reproduction to be a non-magnetic material so as not to disturb the function of the magnetic circuit 1c. Therefore, it is desirable to use the weight 6 as a single material or a combination of brass, lead, stone, resin, or a composite material thereof. The weight 6 is desirably provided in close contact with the rear portion of the speaker unit 1, but may be provided separately from the speaker unit 1. Further, a vibration transmission suppressing material such as gel can be inserted between the weight 6 and the speaker unit 1.

  Further, the weight 6 has an effect of suppressing vibration propagation. When the weight 6 is not disposed, the vibration of the speaker unit 1 propagates to the hanging rod 2 via the magnetic circuit 1c. However, by providing the weight 6 having a high acoustic impedance, the propagation of vibration to the hanging rod 2 is suppressed. In particular, disposing the weight 6 close to the magnetic circuit 1c has the effect of minimizing the range of vibration propagation. Since the weight 6 suppresses the propagation of unnecessary vibrations to the hanging rod 2, the generation of modulated sound by the hanging rod 2 is effectively attenuated.

  The weight 6 effectively suppresses vibration transmission to the mounting plate 7 by a synergistic effect with the vibration suppression effect by the vibration transmission suppressing material 4. If the magnet constituting the magnetic circuit 1c is sufficiently heavy, a vibration damping effect can be expected by using the magnet as a weight. In such a case, the weight 6 (weight body) can be omitted or reduced. It is also possible to do.

  Moreover, since the vertical position of the speaker unit 1 can be adjusted by the two nuts 11, 11, the speaker unit 1 is reliably separated from the mounting plate 7, and the mounting plate 7 does not support the weight of the speaker unit 1. it can. Therefore, it is possible to suppress the vibration of the speaker unit 1 from being transmitted to the mounting plate 7 side, and a more advantageous structure can be obtained when faithful sound reproduction is realized.

  The present invention is not limited to the above-described embodiment, and can be implemented with the following modifications.

  (i) The weight (heavy body) and the suspension rod (suspending member) do not need to be separated, and can be used as a structure in which they are integrally formed. If formed integrally, it is possible to eliminate the mechanical stress generated at the joint between the weight and the hanging rod and to suppress the generation of modulated sound. Furthermore, the integral formation is advantageous for mass production.

  (ii) The hanging rod does not need to be a screw rod (bolt) as a whole including the upper portion. For example, as shown in FIG. 3, the hanging rod is a round rod-like hanging rod 2 ′ having a head portion 2a. It is also possible to fix the portion to the weight 6 by screwing the part into the weight 6, inserting it, or bonding it. Further, the vibration transmission suppressing means can be formed by using a hanging rod formed of a vibration absorbing material such as gel.

  Further, when the height adjusting mechanism using the screw rod is not used, as shown in FIG. 3, the height using the turn buckle, the slide mechanism, etc. in addition to the screw mechanism is provided in the middle of each of the pillar members 3a. It is also possible to provide an adjusting mechanism 9. That is, a mechanism for adjusting the length of the column member 3a can be provided.

(iii) The vibration transmission suppressing means does not need to be a vibration transmission suppressing material such as a gel, and may have a structure capable of suppressing (or blocking) vibration transmission. For example, as shown in FIG.
By attaching the suspension bar 2 and the suspension part 3b spatially using the repulsive force of the two magnets 13A and 13B and attaching them in a floating state, a vibration transmission suppressing means can be formed. In this case, the lower surface 13Bb (for example, S pole) of the lower magnet 13B is in surface contact with the upper surface of the suspended portion 3b, and the upper surface 13Ba (for example, N pole) of the lower magnet 13B and the lower surface of the upper magnet 13A. A repulsive force is generated with 13Ab (for example, N pole), and the suspension rod 2 (bolt) and the nuts 11 and 11 together with the upper magnet 13A float with respect to the suspension portion 3b and the lower magnet 13B. And is in a non-contact state. The hanging rod 2 is supported on the upper surface 13Aa of the upper magnet 13A via the nuts 11 and 11 so that the vertical height of the speaker unit 1 can be adjusted. Moreover, when forming a vibration transmission suppression means using the repulsive force of a magnet, it is not restricted to arrange | positioning two magnets up and down, A several magnet can also be arrange | positioned so that a repulsive force may arise. Furthermore, instead of the magnets 13A and 13B, one or a plurality of springs are used, and the one or a plurality of springs are sandwiched between the flat washer 12 and the suspension portion 3b, and the suspension rod 2 and the suspension portion 3b are interposed. It is also possible to form a vibration transmission suppressing means that spatially separates.

  (iv) The flange portion 1ba of the frame 1b of the speaker unit 1 does not need to be disposed below the mounting plate 7, and the flange portion 1ba of the frame 1b is disposed above the mounting plate 7, for example, as shown in FIG. In this way, the mounting plate 7 and the flange portion 1ba of the frame 1b can be set to the same height. In that case, the sound insulating material 5 ′ may be provided so as to couple the flange portion 1 ba and the mounting plate 7 as shown by a solid line, a one-dot chain line or a two-dot chain line in FIG. 5.

  (v) The shape and structure of the suspension member for suspending the speaker unit 1 are not particularly limited as long as the speaker unit 1 can be supported. For example, as shown in FIG. 6, a cylindrical hanging member 3 ′ having a ceiling plate portion 3 c may be used. Moreover, it is also possible for the suspension member to have a polygonal tube shape such as a square tube shape or a hemispherical shape.

  (vi) When installing in an audio device such as a television, if the structural elements in the equipment (for example, the elements protruding inside) can be used as the hanging part, the hanging member is omitted from the two pillars. Thus, it is possible to form only with the suspended portion. That is, it can be set as the structure suspended using the suspension rod by using the said structural element as a suspension part. For example, as shown in FIG. 7, a protruding plate part 14a (structural element) protruding inward from the side wall part 14 can be used as a hanging part (hanging member).

  (vii) When installing in a building such as a residence, even if structural elements in the building (such as building materials installed horizontally) can be used as hanging parts, the two pillars are omitted and suspended. It is possible to form the suspension member only by the lowering portion.

  (viii) The unit holding member is not limited to the bolt-shaped hanging rod 2. For example, a wire having a hanging function can be used as the unit holding member. Specifically, for example, as shown in FIG. 8 (a), the upper end of the unit holding member 2A made of a wire is used as a ring-shaped locking portion 2Aa (inserted portion), and the locking portion 2Aa has a flat plate shape (or By inserting the suspension part 3b in the form of a rod or a line and sandwiching the vibration transmission suppressing material 4 between the locking part 2Aa and the hanging part 3b (or without inserting the vibration transmission suppressing material) ), The engaging portion 2Aa which is the upper end portion of the unit holding member 2A can be attached to the hanging portion 3b. Further, by using the unit holding members 2B and 2C by supporting the unit holding members 2B and 2C by reducing the contact area so as to be a point contact or a line contact without using the vibration transmission suppressing material 4, Vibration transmission to 3b ′ and 3b ″ can also be suppressed. In that case, for example, as shown in FIG. 8B, the upper end portion of the unit holding member 2B is used as a ring-shaped locking portion 2Ba, and is formed in the recess 3ba ′ of the linear (or rod-shaped) suspension portion 3b ′. For example, as shown in FIG. 8C, the upper end portion of the unit holding member 2C is used as a hook-shaped locking portion 2Ca, and the tip of the locking portion 2Ca is a plate-shaped suspension portion 3b ''. It only has to be fitted into the recess 3ba '' to be in point contact. In any of these cases, the suspension portions 3b to 3b ″ are not provided with through holes. Further, as shown in FIG. 8 (d), the plate-like hanging part 3b is provided with a through hole 3ba having a taper that becomes smaller as it goes downward, and a spherical locking part 2Da (unit holding member 2D) is provided. The inner surface of the through hole 3ba may be locked in a line contact state.

  (ix) The unit holding member (hanging rod 2) can be omitted. For example, as shown in FIG. 9, the hanging part 3b ′ is formed in a round bar shape (or a polyhedral bar shape), and is structured so as to be rotatable at the weight 6 ′ and in line contact. it can. In this case, the vibration transmission suppressing means for suppressing the vibration transmission from the speaker unit 1 to the hanging portion 3b ′ (hanging member) is formed by a line contact structure between the hanging portion 3b ′ and the weight 6 ′. .

  (x) Further, as shown in FIG. 10A, for example, the weight 6 can be directly attached to the suspended portion 3b with the bolts 8 and 8 through the vibration transmission suppressing member 4 ′. Further, the vibration transmission suppressing means does not need to be provided between the speaker unit 1 and the hanging member 3, and can also be provided on a part (on the way) of the lifting member 3. For example, as shown in FIG. 10B, a vibration transmission suppressing material 4 (vibration transmission suppressing means) is provided between the hanging portion 3b and the column portions 3a and 3a so that they do not come into direct contact. It is also possible.

  (xi) If a structure including a casing that surrounds the speaker unit 1 and the suspension member 3 is provided, it can be installed in various places by using the casing. For example, it can be a floor-standing acoustic device or a wall-mounted acoustic device.

(xii) The speaker unit 1 is not limited to the case where the diaphragm 1a is provided downward. For example, as shown in FIG. 11, the speaker unit 1 is provided so that the diaphragm 1a faces upward by means of a suspension rod 2 that couples the lower end to a phase plug 1e provided in the magnetic circuit 1 of the speaker unit 1. You can also. In this case, the speaker unit 1 is housed in a housing 7A having a ceiling plate portion 7Aa serving as a mounting plate. The hanging rod 2 can be coupled to the magnetic circuit 1c of the speaker unit 1 via a member other than the phase plug, or can be directly coupled to the magnetic circuit 1c of the speaker unit 1.
(xiii) In the structure shown in FIG. 4, the vibration transmission suppressing means is formed by using the magnets 13A and 13B having the center hole through which the hanging rod 2 passes. It is also possible to form vibration transmission suppressing means using a magnet that does not. For example, as shown in FIG. 12A, outside the magnets 13A ′ and 13B ′ that do not have a center hole, the housing 13C is positioned so that the axial centers of the magnets 13A ′ and 13B ′ are not displaced and their positional relationship is stabilized. It is also possible to use the magnet unit 13 provided in the above as vibration transmission suppressing means. If such a magnet unit 13 is used, the magnet unit 13 may be provided between the locking portion 2Aa and the hanging portion 3b as shown in FIG. 12 (b), or as shown in FIG. 12 (c). The outer diameter of the flat washer 12 'is increased and a plurality of flat washers 12' are provided between the flat washer 12 'and the hanging portion 3b around the hanging rod 2 to transmit vibration from the speaker unit to the hanging member. It can also be set as the structure to suppress. In the case of the structure shown in FIG. 4, it goes without saying that a cylindrical housing 13 </ b> C can be provided outside the two magnets 13 </ b> A and 13 </ b> B to protect them. In addition, a magnet can use an electromagnet other than a permanent magnet.

  The present invention can also be used as a ceiling-embedded speaker, a wall-mounted speaker, a built-in speaker of a household appliance such as a TV, a built-in speaker of an electronic musical instrument such as an electronic organ, or an in-car speaker of a vehicle such as a train or a car. . It is also used to provide faithful voices and musical sounds in public facilities such as hospitals, commercial gatherings, and restaurants.

DESCRIPTION OF SYMBOLS 1 Speaker unit 1a Diaphragm 1b Frame 1ba Flange part 1c Magnetic circuit 2, 2 'Hanging rod (unit holding member)
2A, 2B, 2C, 2D Unit holding member 2Aa, 2Ba, 2Ca, 2Da Locking portion 3, 3 'Hanging member 3a Pillar portion 3b, 3b', 3b '' Hanging portion 4 Vibration transmission suppressing material 5, 5 ' Sound insulating material 6, 6 ′ Weight 7 Mounting plate 7 a Through hole 7 A Housing 7 Aa Ceiling plate portion 8 Bolt 9 Height adjustment mechanism 11 Nut 12, 12 ′ Flat washer 13 Magnet unit 13 A, 13 A ′, 13 B, 13 B ′ Magnet 13 Aa, 13Ba Upper surface 13Ab, 13Bb Lower surface 14 Side wall portion 14a Projecting plate portion

Claims (7)

A speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppressing means for suppressing vibration transmission from the speaker unit to the suspension member ,
The speaker unit is suspended from the suspension member so that the diaphragm is directed downward or upward ,
A unit holding member that has an upper end provided on the suspension member and holds the speaker unit at the lower end;
The unit holding member has a screw rod portion,
The speaker unit, wherein the unit holding member is fixed on the upper side of the suspension member so that the vertical position of the speaker unit is adjustable with respect to the suspension member by one or a plurality of nuts. Support structure.
A speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppressing means for suppressing vibration transmission from the speaker unit to the suspension member,
The speaker unit is suspended from the suspension member so that the diaphragm is directed downward or upward,
A unit holding member that has an upper end provided on the suspension member and holds the speaker unit at the lower end;
The vibration transmission suppression means, the support structure of the speaker unit, which is a vibration transmission suppression member that is provided, between the suspension member and the upper portion of the unit holding member.
A speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppressing means for suppressing vibration transmission from the speaker unit to the suspension member,
The speaker unit is suspended from the suspension member so that the diaphragm is directed downward or upward,
A unit holding member that has an upper end provided on the suspension member and holds the speaker unit at the lower end;
The unit holding member has an insertion portion into which the suspension member is inserted at an upper end portion,
The structure for supporting a speaker unit, wherein the vibration transmission suppressing means is provided between an upper end portion of the unit holding member and the suspension member.
A speaker unit, a suspension member on which the speaker unit is suspended, and vibration transmission suppressing means for suppressing vibration transmission from the speaker unit to the suspension member,
The speaker unit is suspended from the suspension member so that the diaphragm is directed downward or upward,
A unit holding member that has an upper end provided on the suspension member and holds the speaker unit at the lower end;
The vibration transmission suppressing means is a plurality of magnets arranged so as to generate a repulsive force, and has a structure in which the unit holding member is floated from the suspension member together with a magnet that floats using the repulsive force. A speaker unit support structure characterized by that .
The suspension member has a suspension portion provided with an upper end portion of the unit holding member,
The hanging part has a through hole through which the unit holding member passes,
5. The speaker unit support structure according to claim 2 , wherein the unit holding member is suspended in a state in which the unit holding member is not in contact with a peripheral portion of the through hole.
The speaker unit support structure according to any one of claims 1 to 5, wherein the speaker unit is provided with a weight that attenuates unnecessary vibration of the speaker unit.
Comprising a support structure of a speaker unit according to any one of claims 1 to 6, the acoustic device.

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