Support components and speaker unit

Abstract

This support component 6 comprises: a plurality of planar parts 30 that are aligned at intervals in a plate-thickness direction; a plurality of first peripheral-edge connecting parts 31 each of which connects two planar parts 30 adjacent to each other in the plate-thickness direction in a first range of the periphery direction of the planar parts 30 along the peripheral edges of the planar parts 30 as seen in the plate-thickness direction; and a plurality of second peripheral-edge connecting parts 32 each of which connects two planar parts 30 adjacent to each other in the plate-thickness direction in a second range of the periphery direction of the planar parts 30 along the peripheral edges of the planar parts 30 as seen in the plate-thickness direction. The length of each of the first peripheral-edge connecting parts 31 and the length of each of the second peripheral-edge connecting parts 32 in the periphery direction each are shorter than the length of the whole peripheral edge of each of the planar parts 30. The first peripheral-edge connecting parts 31 and the second peripheral-edge connecting parts 32 are alternately placed in the plate-thickness direction. As seen in the plate-thickness direction, each of the first peripheral-edge connecting parts 31 and a respective one of the second peripheral-edge connecting parts 32 are so arranged as to be continuous with each other in the periphery direction.

Description

Technical Field

[0001] The present invention relates to a support component and a speaker unit.

Background Art

[0002] Components constituting various products are required to have various characteristics. For example, a speaker unit, which is a type of product, has a spider that supports a voice coil so as to vibrate it only in a predetermined axial direction with respect to a frame (see, for example, Patent Document 1). In the speaker unit of Patent Document 1, the spider has legs extending from the voice coil to the frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to vibrate a voice coil only in a predetermined axial direction with respect to a frame, the legs of a spider are required to have the characteristic of actively bending in one direction corresponding to the axial direction and being difficult to bend and twist in another direction different from the one direction (for example, a direction orthogonal to the axial direction). Not limited to the legs of the spider of the speaker unit, there may be a need for a component having the characteristic of being easily bent in one direction, difficult to bend in another direction, and difficult to twist, as a support component for supporting a predetermined component.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a support component having the characteristic of being easily bent in one direction, difficult to bend in another direction, and difficult to twist, and a speaker unit including the same.

Means for Solving the Problems

[0006] A first aspect of the present invention comprises: a plurality of flat plate portions spaced apart in the thickness direction; a plurality of first peripheral connecting portions connecting two adjacent flat plate portions in the thickness direction within a first circumferential range of the flat plate portions as viewed from the thickness direction; and a plurality of second peripheral connecting portions connecting two adjacent flat plate portions in the thickness direction within a second circumferential range of the flat plate portions as viewed from the thickness direction, wherein the lengths of the first peripheral connecting portions and the second peripheral connecting portions in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portions; the first peripheral connecting portions and the second peripheral connecting portions are arranged alternately in the thickness direction; and the first peripheral connecting portions and the second peripheral connecting portions are arranged to be continuous in the circumferential direction as viewed from the thickness direction. Furthermore, the filling portion is provided to fill the gap between two adjacent flat plate portions in the thickness direction, and has different elasticity and / or viscosity from the flat plate portion, the first peripheral connecting portion, and the second peripheral connecting portion. It is a support component. A second aspect of the present invention comprises a plurality of flat plate portions spaced apart in the thickness direction, a plurality of first peripheral connecting portions connecting two adjacent flat plate portions in the thickness direction within a first circumferential range of the flat plate portion as viewed from the thickness direction, and a plurality of second peripheral connecting portions connecting two adjacent flat plate portions in the thickness direction within a second circumferential range of the flat plate portion as viewed from the thickness direction, wherein the lengths of the first peripheral connecting portions and the second peripheral connecting portions in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion. The first peripheral connecting portion and the second peripheral connecting portion are arranged alternately in the plate thickness direction, and when viewed from the plate thickness direction, the first peripheral connecting portion and the second peripheral connecting portion are arranged continuously in the circumferential direction, and each of the multiple flat plate portions has a through hole that penetrates in the plate thickness direction, and each of the multiple flat plate portions has a notch that opens the through hole at the periphery of the flat plate portion, and the notch is a support component located at the periphery of the flat plate portion, avoiding the portion where the first peripheral connecting portion and the second peripheral connecting portion are connected when viewed from the plate thickness direction. A third aspect of the present invention comprises a plurality of flat plate portions spaced apart in the thickness direction, a plurality of first peripheral connecting portions connecting two adjacent flat plate portions in the thickness direction within a first circumferential range of the flat plate portion as viewed from the thickness direction, and a plurality of second peripheral connecting portions connecting two adjacent flat plate portions in the thickness direction within a second circumferential range of the flat plate portion as viewed from the thickness direction, wherein the lengths of the first peripheral connecting portions and the second peripheral connecting portions in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion, the first peripheral connecting portions and the second peripheral connecting portions are arranged alternately in the thickness direction, the first peripheral connecting portions and the second peripheral connecting portions are arranged continuously in the circumferential direction as viewed from the thickness direction, and the size of the flat plate portion as viewed from the thickness direction differs between two adjacent flat plate portions. It is a support component.

[0007] This invention fourth The embodiment includes a frame, an excitation unit provided to vibrate linearly with respect to the frame, and a support for the excitation unit by connecting the frame and the excitation unit. The aforementioned The speaker unit comprises a support component and a plurality of the flat plate portions arranged in a direction toward the vibration portion from the frame, and when viewed from the plate thickness direction, the two portions where the first peripheral connecting portion and the second peripheral connecting portion are connected to each other in the circumferential direction are arranged in a direction perpendicular to the linear direction. A fifth aspect of the present invention comprises a frame, an excitation unit provided to vibrate linearly with respect to the frame, and a support component that connects the frame and the excitation unit to support the excitation unit, wherein the support component comprises a plurality of flat plate portions arranged at intervals in the thickness direction, a plurality of first peripheral connecting portions that connect two adjacent flat plate portions in the thickness direction within a first range in the circumferential direction of the flat plate portions as viewed from the thickness direction, and the circumferential direction of the flat plate portions as viewed from the thickness direction The flat plate portion comprises a plurality of second peripheral connecting portions that connect two adjacent flat plate portions in the thickness direction within a second circumferential range at the edge, wherein the lengths of the first peripheral connecting portions and the second peripheral connecting portions in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion, the first peripheral connecting portions and the second peripheral connecting portions are arranged alternately in the thickness direction, and the first peripheral connecting portions and the second peripheral connecting portions are continuous in the circumferential direction when viewed from the thickness direction. average Furthermore, the plurality of flat plate portions are arranged in a direction toward the vibration portion from the frame, and when viewed from the plate thickness direction, the two portions where the first peripheral connecting portion and the second peripheral connecting portion are connected to each other in the circumferential direction are speaker units arranged in a direction perpendicular to the linear direction. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a support component having the characteristics of being easily bent in one direction, difficult to bend in other directions, and difficult to twist, as well as a speaker unit equipped therewith. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic cross-sectional view showing a speaker unit according to the first embodiment of the present invention. [Figure 2] It is a perspective view showing a spider of the speaker unit of FIG. 1. [Figure 3] It is a perspective view showing a support part according to the first embodiment of the present invention. [Figure 4] It is a cross-sectional view of the support part of FIG. 3 seen from the plate thickness direction of the flat plate part. [Figure 5] It is a perspective view showing a support part according to the second embodiment of the present invention. [Figure 6] It is a perspective view showing a support part according to the third embodiment of the present invention. [Figure 7] It is a cross-sectional view of the support part of FIG. 6 seen from the plate thickness direction of the flat plate part. [Figure 8] It is a perspective view showing a support part according to the fourth embodiment of the present invention. [Figure 9] It is a perspective view showing a support part according to the fifth embodiment of the present invention. [Figure 10] It is a cross-sectional view of the support part of FIG. 10 seen from the plate thickness direction of the flat plate part. [Figure 11] It is a plan view showing a main part of a spider provided in a speaker unit according to the sixth embodiment of the present invention. [Figure 12] It is a plan view showing a main part of a spider provided in a speaker unit according to the seventh embodiment of the present invention.

Mode for Carrying Out the Invention

[0010] (First Embodiment) Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in FIG. 1, the speaker unit 1 of the first embodiment includes a frame 2, a diaphragm 3, a vibration part 4, a magnetic circuit forming part 5, and a support part 6.

[0011] The diaphragm 3 is formed in a conical shape having an opening 11 at the center and is disposed inside the frame 2. The outer edge of the diaphragm 3 is attached to the frame 2 via an annular edge 7. The inner edge of the diaphragm 3 is fixed to a vibration exciter 4 described later. The opening 11 of the diaphragm 3 is covered by a dome-shaped cap 8. Note that the speaker unit 1 may not include the edge 7 or the cap 8. Further, the shape of the diaphragm 3 constituting the speaker unit 1 is not limited to the shape described above. The shape of the diaphragm 3 may be, for example, a conical shape or a dome shape without an opening at the center, or a shape integrating a cone and a dome.

[0012] The vibration exciter 4 is provided so as to vibrate in a linear direction (Z-axis direction) with respect to the frame 2. The "linear direction" corresponds to the vertical direction in FIG. 1. The vibration exciter 4 includes a cylindrical bobbin 12 and a voice coil 13 wound around the bobbin 12. The axial directions of the bobbin 12 and the voice coil 13 face the "linear direction". The inner edge of the diaphragm 3 described above is fixed to the bobbin 12 of the vibration exciter 4 by adhesion or the like. The magnetic circuit forming portion 5 includes a magnet 14 and forms a magnetic field between the inside and the outside of the voice coil 13.

[0013] The support component 6 supports the vibration exciter 4 by connecting the frame 2 and the vibration exciter 4. The support component 6 extends from the bobbin 12 to the frame 2. A plurality of support components 6 are arranged in the circumferential direction of the bobbin 12.

[0014] As shown in FIGS. 1 and 2, the support component 6 of the present embodiment constitutes a spider 20 together with an annular outer ring 21 and an inner ring 22. The outer ring 21 is fixed to the frame 2 by adhesion or the like. The inner ring 22 is fixed to the bobbin 12 of the vibration exciter 4 by adhesion or the like. The support component 6 extends from the outer ring 21 to the inner ring 22. In FIG. 2, the support component 6 extends linearly in the radial direction of the outer ring 21 and the inner ring 22. In FIG. 2, three support components 6 are arranged at intervals in the circumferential direction of the outer ring 21 and the inner ring 22, but the number of support components 6 is not limited to this.

[0015] The support component 6 allows vibration of the excitation unit 4 in the linear direction (Z-axis direction) while suppressing vibration of the excitation unit 4 around the axis extending in the linear direction (yaw) and vibration around the axis extending in a direction perpendicular to the linear direction (roll, pitch). As a result, the support component 6 suppresses problems such as the voice coil 13 hitting the magnetic path forming unit 5 and generating abnormal noise, or the voice coil 13 breaking, due to the voice coil 13 not being able to be centered. The configuration of the support component 6 that performs these functions will be described later.

[0016] In the speaker unit 1 shown in Figure 1, the fixing point between the inner edge of the diaphragm 3 and the bobbin 12 of the excitation unit 4, and the fixing point between the inner ring 22 of the spider 20 and the bobbin 12 of the excitation unit 4 are located at a distance from each other, but they may coincide, for example. That is, the diaphragm 3, the excitation unit 4 (bobbin 12), and the spider 20 (inner ring 22) may be fixed at the same location.

[0017] In this speaker unit 1, current is passed through the voice coil 13, causing the excitation unit 4 to vibrate linearly (in the Z-axis direction) relative to the frame 2. Sound waves are radiated as the diaphragm 3 vibrates in conjunction with the vibration of the excitation unit 4.

[0018] Next, the support component 6 of the first embodiment will be described, mainly with reference to Figures 3 and 4. As shown in Figure 3, the support component 6 comprises a plurality of flat plate portions 30, a plurality of first peripheral connecting portions 31, and a plurality of second peripheral connecting portions 32.

[0019] Multiple flat plate sections 30 are arranged at intervals in the thickness direction. In this embodiment, the shape, thickness, and size of the multiple flat plate sections 30 as viewed from the thickness direction are the same. In Figures 3 and 4, the plan view shape of the flat plate section 30 as viewed from the thickness direction is square. However, the plan view shape of the flat plate section 30 is not limited to a square, and may be any shape such as a polygon (triangle, etc.), a circle, or an ellipse.

[0020] As shown in Figures 3 and 4, the first peripheral connecting portion 31 connects two adjacent flat plate portions 30 in the thickness direction within a first range R1 in the circumferential direction of the flat plate portion 30, as viewed from the thickness direction of the flat plate portion 30. The second peripheral connecting portion 32 connects two adjacent flat plate portions 30 in the thickness direction within a second range R2 in the circumferential direction of the flat plate portion 30, as viewed from the thickness direction of the flat plate portion 30. The first peripheral connecting portion 31 and the second peripheral connecting portion 32 each have a predetermined length (width dimension) in a direction perpendicular to the circumferential direction of the flat plate portion 30 as viewed from the thickness direction (hereinafter referred to as the width direction W). The first peripheral connecting portion 31 and the second peripheral connecting portion 32 are arranged alternately in the thickness direction of the flat plate portion 30.

[0021] The lengths of the first peripheral connecting portion 31 (i.e., the length of the first range R1) and the second peripheral connecting portion 32 (i.e., the length of the second range R2) in the circumferential direction of the flat plate portion 30 are each shorter than the total circumference of the periphery of the flat plate portion 30. Furthermore, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are arranged to be continuous in the circumferential direction of the flat plate portion 30. In other words, there is no gap between the first peripheral connecting portion 31 and the second peripheral connecting portion 32 in the circumferential direction of the flat plate portion 30.

[0022] In this embodiment, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are arranged continuously in the circumferential direction of the flat plate portion 30 without overlapping in the thickness direction of the flat plate portion 30. Therefore, the ends of the first peripheral connecting portion 31 and the ends of the second peripheral connecting portion 32 are connected without any gaps in the circumferential direction. In this embodiment, the ends of the first peripheral connecting portion 31 and the ends of the second peripheral connecting portion 32 are connected over the entire width direction W of the first peripheral connecting portion 31 and the second peripheral connecting portion 32. That is, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are continuous in the circumferential direction over the entire width direction W of the first peripheral connecting portion 31 and the second peripheral connecting portion 32. In the following description, the portion where the ends of the first peripheral connecting portion 31 and the ends of the second peripheral connecting portion 32 are connected to each other in the circumferential direction of the flat plate portion 30 will be referred to as the connecting portion 35. There are two such connecting portions 35 in the circumferential direction of the flat plate portion 30.

[0023] Furthermore, in this embodiment, the lengths of the first peripheral connecting portion 31 and the second peripheral connecting portion 32 in the circumferential direction of the flat plate portion 30 are equal to each other. That is, the lengths of the first peripheral connecting portion 31 and the second peripheral connecting portion 32 in the circumferential direction are each half the total length of the periphery of the flat plate portion 30. Specifically, the first peripheral connecting portion 31 is provided on the periphery corresponding to two sides of the square-shaped flat plate portion 30 that are aligned in the circumferential direction. The second peripheral connecting portion 32 is provided on the periphery corresponding to two other sides of the square-shaped flat plate portion 30 that are different from the first peripheral connecting portion 31.

[0024] In the support component 6 configured as described above, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are arranged to be continuous in the circumferential direction of the flat plate portion 30. Therefore, in the support component 6, the two connecting portions 35 where the ends of the first peripheral connecting portion 31 and the ends of the second peripheral connecting portion 32 are connected in the circumferential direction are less likely to expand or contract in the thickness direction of the flat plate portion 30, and are also less likely to twist around the thickness direction of the flat plate portion 30 as an axis.

[0025] Furthermore, in the support component 6, in the portion corresponding to the connection portion 35 in the circumferential direction, adjacent flat plate portions 30 in the thickness direction are connected by a first peripheral connecting portion 31 and a second peripheral connecting portion 32 that extend linearly in the thickness direction. In other words, in the portion corresponding to the connection portion 35, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are alternately interposed between adjacent flat plate portions 30 in the thickness direction. As a result, the portion of the support component 6 corresponding to the connection portion 35 in the circumferential direction extends linearly. Therefore, the portion of the support component 6 corresponding to the connection portion 35 does not expand or contract much or at all in the thickness direction of the flat plate portion 30.

[0026] On the other hand, the intermediate portion 311 of the first peripheral connecting portion 31 and the intermediate portion 321 of the second peripheral connecting portion 32 in the circumferential direction of the flat plate portion 30 do not overlap in the thickness direction of the flat plate portion 30. Here, the intermediate portion 311 of the first peripheral connecting portion 31 is the portion that includes the middle of both ends of the first peripheral connecting portion 31 which becomes the connecting portion 35, and is located away from both ends (connecting portion 35) of the first peripheral connecting portion 31. Similarly, the intermediate portion 321 of the second peripheral connecting portion 32 is the portion that includes the middle of both ends of the second peripheral connecting portion 32 which becomes the connecting portion 35, and is located away from both ends (connecting portion 35) of the second peripheral connecting portion 32. Because the intermediate portion 311 of the first peripheral connecting portion 31 and the intermediate portion 321 of the second peripheral connecting portion 32 do not overlap in the thickness direction of the flat plate portion 30, the distance between adjacent flat plate portions 30 can be freely changed in the parts of the flat plate portion 30 where the intermediate portions 311 and 321 of the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are located. As a result, the part of the support component 6 where the intermediate portion 311 of the first peripheral connecting portion 31 and the intermediate portion 321 of the second peripheral connecting portion 32 are located in the circumferential direction can be easily expanded or contracted in the thickness direction of the flat plate portion 30.

[0027] From the above, it can be concluded that the support component 6 is easily bent in directions VD1 and VD2 (hereinafter referred to as one direction VD1 and VD2) where the portion of the intermediate part 311 of the first peripheral edge connecting portion 31 is located in the circumferential direction, or where the portion of the intermediate part 311 of the first peripheral edge connecting portion 31 is located in the circumferential direction is on the inside of the bend, and is difficult to bend in other directions. Furthermore, the support component 6 is difficult to twist in the twisting direction with the thickness direction of the flat plate portion 30 as the axis.

[0028] Next, the specific arrangement of the support components 6 in the speaker unit 1 of the first embodiment will be described. As shown in Figures 1 and 2, in the support component 6 that connects the outer ring 21 (frame 2) and the inner ring 22 (vibration section 4), multiple flat plate sections 30 are arranged in a direction from the outer ring 21 toward the inner ring 22. Furthermore, the two connecting sections 35, where the first peripheral edge connecting section 31 and the second peripheral edge connecting section 32 of the support component 6 connect to each other in the circumferential direction of the flat plate section 30, are arranged in a direction perpendicular to the "linear direction" (Z-axis direction) when viewed from the thickness direction of the flat plate section 30, that is, they are aligned in the circumferential direction of the outer ring 21 and the inner ring 22.

[0029] Therefore, the direction in which the support component 6 is most likely to bend (unidirectional VD1, VD2) corresponds to the linear direction in which the excitation unit 4 vibrates. As a result, the support component 6 bends in unidirectional VD1, VD2 in accordance with the linear vibration of the excitation unit 4. In other words, the support component 6 actively bends in unidirectional VD1, VD2, which corresponds to the axial direction of the voice coil 13 of the excitation unit 4. Thus, the support component 6 can support the excitation unit 4 while allowing it to vibrate in the linear direction.

[0030] Furthermore, the support component 6 is resistant to bending and twisting in directions other than the one directions VD1 and VD2. For example, the support component 6 is resistant to bending and twisting in a direction perpendicular to the axial direction of the voice coil 13 of the excitation unit 4. As a result, vibration of the excitation unit 4 around an axis extending in the linear direction relative to the frame 2, or around an axis extending in a direction perpendicular to the linear direction, can be effectively suppressed. In other words, the generation of yaw, roll, and pitch vibrations of the excitation unit 4 can be suppressed. This prevents problems such as the voice coil 13 hitting the magnetic path forming unit 5 and generating abnormal noise, or the voice coil 13 breaking, due to the voice coil 13 not being able to be centered.

[0031] The support component 6 applied to the speaker unit 1 may be made of, for example, a material with high viscous loss. In this case, the vibration of the excitation section 4 can be efficiently dampened by the support component 6.

[0032] As described above, according to the support component 6 of the first embodiment, the first peripheral edge connecting portion 31 and the second peripheral edge connecting portion 32, which are arranged alternately in the thickness direction of the flat plate portion 30, are arranged to be continuous in the circumferential direction. As a result, a support component 6 can be obtained that is easily bent in one direction VD1, VD2 and difficult to bend in the other direction, and is also difficult to twist.

[0033] Furthermore, according to the support component 6 of the first embodiment, since the circumferential lengths of the first and second peripheral edge connecting portions 31 and 32 are equal, the support component 6 can be bent evenly on both sides VD1 and VD2 in one direction. In addition, since the circumferential ends of the first peripheral edge connecting portion 31 and the circumferential ends of the second peripheral edge connecting portion 32 do not overlap in the thickness direction of the flat plate portion 30, a large bending stroke in one direction VD1 and VD2 can be secured.

[0034] Furthermore, according to the speaker unit 1 of the first embodiment, the generation of yaw, roll, and pitch vibrations of the excitation section 4 can be suppressed. This makes it possible to prevent unintended sounds from being output from the speaker unit 1.

[0035] In the support component 6 of the first embodiment, the planar shape of the flat plate portion 30 may be, for example, circular, elliptical, or semicircular. When the planar shape of the flat plate portion 30 is circular or semicircular, there is less anisotropy compared to a polygonal shape, which has the effect of making it less likely for stress concentration to occur in the support component 6.

[0036] (Second embodiment) Next, a second embodiment of the present invention will be described with reference to Figure 5. In the following description, components that are common to those already described will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0037] As shown in Figure 5, the support component 6B of the second embodiment further comprises a filling portion 33 in addition to the same plurality of flat plate portions 30, plurality of first peripheral connecting portions 31, and plurality of second peripheral connecting portions 32 as in the first embodiment. The filling portion 33 is provided to fill the gap between two adjacent flat plate portions 30 in the thickness direction. The filling portion 33 has different elasticity and / or viscosity from the flat plate portions 30 and the first and second peripheral connecting portions 31, 32. Compared to the flat plate portions 30 and the first and second peripheral connecting portions 31, 32, the filling portion 33 may have, for example, a lower elastic modulus or a larger viscous loss. The support component 6B of the second embodiment is applicable to the speaker unit 1 illustrated in the first embodiment.

[0038] The support component 6B of the second embodiment provides the same effects as the first embodiment. Furthermore, since the support component 6B of the second embodiment includes a filling portion 33 that fills the gap between the two flat plate portions 30, fine adjustments such as improving the bending rigidity of the support component 6B or accelerating vibration damping can be made compared to the case where the filling portion 33 is not provided.

[0039] (Third embodiment) Next, a third embodiment of the present invention will be described with reference to Figures 6 and 7. In the following description, components that are common to those already described will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0040] As shown in Figures 6 and 7, the support component 6C of the third embodiment, like the support component 6 of the first embodiment, comprises a plurality of flat plate portions 30, a plurality of first peripheral connecting portions 31, and a plurality of second peripheral connecting portions 32. In the support component 6C of the third embodiment, through holes 301 are formed in each of the multiple flat plate portions 30, penetrating in the thickness direction. The through holes 301 of each flat plate portion 30 are formed in the center of the flat plate portion 30 when viewed from the thickness direction. The through holes 301 formed in the multiple flat plate portions 30 are aligned in the thickness direction. In other words, the support component 6C is formed in a cylindrical shape.

[0041] Furthermore, each of the multiple flat plate portions 30 has a notch 302 formed therein, which opens a through hole 301 at the periphery of the flat plate portion 30. The notch 302 is positioned at the periphery of the flat plate portion 30, avoiding the two connecting portions 35 where the first periphery connecting portion 31 and the second periphery connecting portion 32 are connected, when viewed from the plate thickness direction. In the third embodiment, the notch 302 is located at the periphery of the flat plate portion 30, in a portion corresponding to the intermediate portions 311 and 321 in the circumferential direction of the first periphery connecting portion 31 and the second periphery connecting portion 32. Therefore, the direction in which the notch 302 extends from the through hole 301 to the periphery of the flat plate portion 30 is perpendicular to the direction in which the two connecting portions 35 are aligned, when viewed from the plate thickness direction of the flat plate portion 30.

[0042] In the third embodiment, the direction in which the notch 302 extends from the through hole 301 to the periphery of the flat plate portion 30 differs between two adjacent flat plate portions 30. The directions in which the notch 302 extends in multiple flat plate portions 30 will be described in detail below. Each of the multiple flat plate sections 30 has multiple first flat plate sections 30I and multiple second flat plate sections 30J that are arranged alternately in the thickness direction of the plate. In the multiple first flat plate sections 30I, the notches 302 extend in the same direction from the through holes 301 to the periphery of the flat plate section 30. In the multiple second flat plate sections 30J, the notches 302 extend in the same direction from the through holes 301 to the periphery of the flat plate section 30. In the first flat plate sections 30I and the second flat plate sections 30J, the notches 302 extend in opposite directions from the through holes 301 to the periphery of the flat plate section 30. Specifically, the notches 302 formed in the first flat plate section 30I are located at the periphery of the flat plate section 30, corresponding to the intermediate portion 311 of the first peripheral connecting portion 31, from the through holes 301. On the other hand, the notch 302 formed in the second flat plate portion 30J is located at a point on the periphery of the flat plate portion 30 that corresponds to the intermediate portion 321 in the circumferential direction of the second peripheral edge connecting portion 32.

[0043] The support component 6C of the third embodiment is applicable to the speaker unit 1 illustrated in the first embodiment. In this case, the electrical wiring for supplying current to the voice coil 13, which is drawn out from the voice coil 13, can be passed through the through holes 301 of the multiple flat plate portions 30 of the support component 6C. As a result, even if the diaphragm 3, the excitation portion 4, and the spider 20 (inner ring 22) are fixed at the same location by adhesive or the like, the electrical wiring for the voice coil 13 can be drawn out from the voice coil 13 without having to pass through the diaphragm 3.

[0044] The support component 6C of the third embodiment provides the same effects as the first embodiment. Furthermore, in the support component 6C of the third embodiment, through holes 301 are formed in each of the multiple flat plate portions 30, penetrating in the thickness direction. By inserting cables such as electrical wiring for the voice coil 13 through the through holes 301 of the multiple flat plate portions 30, the cables can be supported by the support component 6C.

[0045] Furthermore, in the support component 6C of the third embodiment, a notch 302 is formed in the flat plate portion 30, opening a through hole 301 at the periphery of the flat plate portion 30. This makes it possible to manufacture a support component 6C having multiple flat plate portions 30 having through holes 301 by molding.

[0046] Furthermore, in the support component 6C of the third embodiment, the notch 302 formed in the flat plate portion 30 is positioned to avoid the connection portion 35 between the first peripheral edge connecting portion 31 and the second peripheral edge connecting portion 32 when viewed from the thickness direction of the flat plate portion 30. This prevents the support component 6C from losing its characteristics of being easily bent in one direction VD1, VD2 and difficult to bend in other directions, as well as its resistance to twisting, even though the notch 302 is formed in the flat plate portion 30.

[0047] Furthermore, in the support component 6C of the third embodiment, the direction in which the notch 302 extends from the through hole 301 to the periphery of the flat plate portion 30 differs between two adjacent flat plate portions 30 in the thickness direction of the flat plate portion 30. This allows the cable to be kept inserted through the through hole 301 of multiple flat plate portions 30. In other words, it is possible to prevent the cable inserted through the through hole 301 of multiple flat plate portions 30 from falling out of the support component 6C through the notch 302.

[0048] In the support component 6C of the third embodiment, the direction in which the notch 302 extends from the through hole 301 to the periphery of the flat plate portion 30 may be the same, for example, between two adjacent flat plate portions 30 (first flat plate portion 30I, second flat plate portion 30J), that is, it may be the same among multiple flat plate portions 30 constituting the support component 6C.

[0049] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described with reference to Figure 8. In the following description, components that are common to those already described will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0050] As shown in Figure 8, the support component 6D of the fourth embodiment, like the support component 6 of the first embodiment, comprises a plurality of flat plate portions 30, a plurality of first peripheral connecting portions 31, and a plurality of second peripheral connecting portions 32. The plan view shape of the flat plate portions 30 as seen from the plate thickness direction is the same among the plurality of flat plate portions 30. In Figure 8, the plan view shape of the plurality of flat plate portions 30 is all square.

[0051] However, in the support component 6D of the fourth embodiment, the size of the flat plate portion 30 as viewed from the thickness direction differs between two adjacent flat plate portions 30. Also, the size of the multiple flat plate portions 30 as viewed from the thickness direction gradually increases from one side to the other in the thickness direction of the flat plate portion 30. In Figure 8, "one side" is the left side and "the other side" is the right side. Therefore, the support component 6D is formed in a conical shape, where the cross-section of the support component 6D perpendicular to its longitudinal direction (the thickness direction of the flat plate portion 30) gradually increases from one side to the other. In the fourth embodiment, since the plan view shape of the flat plate portion 30 is square, the support component 6D is formed in a square pyramidal shape.

[0052] The support component 6D of the fourth embodiment is applicable to the speaker unit 1 illustrated in the first embodiment. The support component 6D shown in Figure 8 may be attached to the speaker unit 1 as follows, for example: One end (left side in Figure 8) of the support component 6D with a smaller flat plate portion 30 when viewed in the plate thickness direction is connected to the outer ring 21. The other end (right side in Figure 8) of the support component 6D with a larger flat plate portion 30 is connected to the inner ring 22.

[0053] The support component 6D of the fourth embodiment provides the same effects as the first embodiment. Furthermore, in the support component 6D of the fourth embodiment, the size of the flat plate portion 30 as viewed from the thickness direction differs between two adjacent flat plate portions 30. Also, the size of the multiple flat plate portions 30 as viewed from the thickness direction gradually increases from one side to the other in the thickness direction of the flat plate portion 30. This improves the strength of the support component 6D against bending in other directions. In other words, it improves the resistance of the support component 6D to bending in other directions.

[0054] In the fourth embodiment, the support component 6D is not limited to being formed in a conical shape; for example, a portion of the support component 6D in the longitudinal direction may be formed to be larger (thicker) than other portions of the support component 6D. Even with such a configuration, it is possible to improve the strength of the support component 6D against bending in other directions.

[0055] A structure to improve the strength of the support component 6D against bending in other directions may be, for example, a structure in which the thickness of some of the multiple flat plate portions 30 constituting the support component 6D is made thicker than the thickness of the other flat plate portions 30, or a structure in which the plan view shape of the flat plate portions 30 as seen from the thickness direction is made different between two adjacent flat plate portions 30.

[0056] (Fifth embodiment) Next, a fifth embodiment of the present invention will be described with reference to Figures 9 and 10. In the following description, components that are common to those already described will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0057] As shown in Figure 9, the support component 6E of the fifth embodiment, like the support component 6 of the first embodiment, comprises a plurality of flat plate portions 30, a plurality of first peripheral connecting portions 31, and a plurality of second peripheral connecting portions 32. In the fifth embodiment of the support component 6E, in the portion of the support component 6E corresponding to the connection portion 35 in the circumferential direction, adjacent flat plate portions 30 in the thickness direction are connected between these adjacent flat plate portions 30 by a first peripheral connecting portion 31 and a second peripheral connecting portion 32 that meander or curve between them. That is, the portion of the support component 6E corresponding to the connection portion 35 meanders in the thickness direction. The first peripheral connecting portion 31 and the second peripheral connecting portion 32 are elastically capable of bending and deforming.

[0058] Specifically, in the support component 6E of the fifth embodiment, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are each curved in a U-shape when viewed from the circumferential direction of the flat plate portion 30. Both ends of the U-shaped first peripheral connecting portion 31 and the second peripheral connecting portion 32 are connected to adjacent flat plate portions 30, respectively. Note that the shape of the first peripheral connecting portion 31 and the second peripheral connecting portion 32 when viewed from the circumferential direction of the flat plate portion 30 is not limited to a U-shape; it may be formed in any shape that can be elastically bent and deformed, such as a V-shape or a rectangular shape. In the support components illustrated in Figures 9 and 10, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are located outside the periphery of the flat plate portion 30 when viewed from the thickness direction of the flat plate portion 30. However, they may also be located inside the periphery of the flat plate portion 30, for example, as in the first embodiment.

[0059] As shown in Figures 9 and 10, in the support component 6E of the fifth embodiment, the ends of the first peripheral connecting portion 31 and the end of the second peripheral connecting portion 32 in the circumferential direction are connected only in a portion of the width direction W of the first peripheral connecting portion 31 and the second peripheral connecting portion 32. That is, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are continuous in the circumferential direction only in a portion of their width direction W. In Figures 9 and 10, the connection portion 35 between the first peripheral connecting portion 31 and the second peripheral connecting portion 32 is the portion where the edge of the first peripheral connecting portion 31 and the edge of the second peripheral connecting portion 32, which are located on the inside (center side) of the flat plate portion 30 in the width direction W when viewed from the thickness direction of the flat plate portion 30, are connected.

[0060] The support component 6E of the fifth embodiment has the same characteristics as the support component 6 of the first embodiment. That is, the support component 6E has the characteristic of being easily bent in one direction VD1, VD2 (see Figure 3, etc.) and difficult to bend in the other direction, and is also difficult to twist. Furthermore, in the support component 6E, the connecting portion 35 where the end of the first peripheral connecting portion 31 and the end of the second peripheral connecting portion 32 are connected in the circumferential direction is less prone to expansion and contraction in the thickness direction of the flat plate portion 30 compared to the portion of the support component 6E where the intermediate portion 311 of the first peripheral connecting portion 31 and the intermediate portion 321 of the second peripheral connecting portion 32 are located in the circumferential direction.

[0061] Furthermore, in the support component 6E of the fifth embodiment, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 in the portion of the support component 6E corresponding to the connecting portion 35 meander or curve between adjacent flat plate portions 30. In addition, the first peripheral connecting portion 31 and the second peripheral connecting portion 32 are elastically capable of bending and deforming. For this reason, the connecting portion 35 of the support component 6E is slightly more prone to expansion and contraction in the thickness direction of the flat plate portion 30 compared to the support component 6 of the first embodiment. As a result, the support component 6E is slightly more prone to bending in other directions (directions other than the one direction VD1, VD2) and slightly more prone to twisting compared to the support component 6 of the first embodiment. The support component 6E of the fifth embodiment, configured as described above, is applicable to the speaker unit 1 illustrated in the first embodiment.

[0062] The support component 6E of the fifth embodiment provides the same effects as the first embodiment. Furthermore, the support component 6E of the fifth embodiment is slightly more flexible in other directions (directions other than the one direction VD1, VD2) and slightly more flexible in twisting compared to the support component 6 of the first embodiment. For this reason, when the support component 6E of the fifth embodiment is applied to the spider 20 of the speaker unit 1 (see Figures 1 and 2), the support component 6E can support the excitation unit 4 in such a way that it allows for a small amount of yaw, roll, and pitch vibration of the excitation unit 4. This makes it possible to suppress stress concentration in local parts of the spider 20. The local parts of the spider 20 may be, for example, the connection parts between the support component 6E and the outer ring 21 or the inner ring 22.

[0063] (Sixth Embodiment) Next, a sixth embodiment of the present invention will be described with reference to Figure 11. In the following description, components that are common to those already described will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0064] As shown in Figure 11, the speaker unit of the sixth embodiment includes a spider 20F, similar to the first embodiment, which includes an outer ring 21, an inner ring 22, and a support component 6. The spider 20F illustrated in Figure 11 is not limited to the support component 6 of the first embodiment, but may also be fitted with support components 6B, 6C, 6D, and 6E of the second, third, fourth, and fifth embodiments.

[0065] The spider 20F of the sixth embodiment further includes an extendable body 9. In Figure 11, the extendable body 9 is positioned between the support component 6 and the inner ring 22 (vibration section 4). The extendable body 9 may also be positioned, for example, between the support component 6 and the outer ring 21 (frame 2). Alternatively, the extendable body 9 may be positioned, for example, in the middle of the support component 6 in the longitudinal direction (thickness direction of the flat plate section 30). If the extendable body 9 is positioned in the middle of the support component 6, the support component 6 may be divided and positioned on both sides of the extendable body 9.

[0066] The expandable body 9 is configured to expand and contract in the longitudinal direction of the support component 6 (the thickness direction of the flat plate portion 30). The expandable body 9 may expand and contract elastically, for example. In this case, it is more preferable for the elastic modulus of the expandable body 9 to be low. This is because if the elastic modulus of the expandable body 9 is high, when the expandable body 9 expands and contracts elastically, the elastic force of the expandable body 9 is more likely to hinder the movement (vibration) of the excitation part 4. The expandable body 9 may be an elastic material such as rubber, or it may be a straight rod-shaped member that can bend or deform, or a curved rod-shaped member. Alternatively, the expandable body 9 may be a bellows-shaped cylindrical member that can expand and contract in the axial direction.

[0067] The speaker unit of the sixth embodiment provides the same effects as the first embodiment. Furthermore, according to the speaker unit of the sixth embodiment, the presence of an expandable / contractable body 9 between the support component 6 and the frame 2 (outer ring 21) or the vibration-exciting section 4 (inner ring 22), or in the middle of the support component 6, can suppress interference with the vibration of the vibration-exciting section 4 in the linear direction (Z-axis direction). This point will be explained below.

[0068] The support component 6 that supports the vibration-generating section 4 is easily bent in the bending direction corresponding to the linear direction in which the vibration-generating section 4 vibrates, but has the characteristic of being difficult to expand or contract in the thickness direction of the flat plate section 30 (the longitudinal direction of the support component 6). For this reason, the support component 6 may hinder the linear vibration of the vibration-generating section 4. In contrast, in the speaker unit of the sixth embodiment, an expandable body 9 is provided between the support component 6 and the frame 2 or the vibration unit 4, or in the middle of the support component 6. As a result, the expandable body 9 expands and contracts in the thickness direction of the flat plate portion 30 in response to the linear vibration of the vibration unit 4, thereby suppressing the obstruction of the linear vibration of the vibration unit 4.

[0069] (Seventh Embodiment) Next, a seventh embodiment of the present invention will be described with reference to Figure 12. In the following description, components that are common to those already described will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0070] As shown in Figure 12, the speaker unit of the seventh embodiment includes a spider 20G, which includes an outer ring 21, an inner ring 22, and a support component 6, similar to the first embodiment. The spider 20G illustrated in Figure 12 is not limited to the support component 6 of the first embodiment, but may also be fitted with support components 6B, 6C, 6D, and 6E of the second, third, fourth, and fifth embodiments.

[0071] The spider 20G of the seventh embodiment further comprises a rigid body 10. In Figure 11, the rigid body 10 is positioned between the support component 6 and the inner ring 22 (vibration section 4). The rigid body 10 may also be positioned, for example, between the support component 6 and the outer ring 21 (frame 2). Alternatively, the rigid body 10 may be positioned, for example, in the middle of the support component 6 in the longitudinal direction (thickness direction of the flat plate section 30). If the rigid body 10 is positioned in the middle of the support component 6, the support component 6 may be divided and positioned on both sides of the rigid body 10.

[0072] The rigid body 10 is configured not to deform in the longitudinal direction of the support component 6 (the thickness direction of the flat plate portion 30). In response to vibrations from the speaker unit 1, there are areas in the support component 6 where deformation is minimal. Making these areas rigid 10 does not affect the overall movement of the support component 6, thus maintaining the effect of damping vibrations of the vibrating portion 4 while reducing the weight of the support component 6. Furthermore, by making specific parts of the support component 6 rigid 10, vibrations of specific vibration modes can be suppressed. For example, the second-order vibration mode of the support component 6 occurs most significantly in the central part of the support component 6; therefore, making this part rigid 10 can suppress vibrations of the second-order vibration mode. The speaker unit of the seventh embodiment provides the same effects as the first embodiment. The rigid body 10 may be made of a material with high viscous loss, and may be made of the same material as the support component 6.

[0073] Although the present invention has been described in detail above, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0074] In the support component of the present invention, for example, the length of the first peripheral connecting portion 31 and the length of the second peripheral connecting portion 32 in the circumferential direction may be different from each other. If the length of the first peripheral connecting portion 31 in the circumferential direction is longer than the length of the second peripheral connecting portion 32, the stroke by which the support component can be bent so that the portion of the support component with the first peripheral connecting portion 31 is on the inside of the bend will be greater than the stroke when the support component is bent so that the portion of the support component with the second peripheral connecting portion 32 is on the inside of the bend. In other words, the magnitude of the bend will be different when the support component is bent to one side in one direction (for example, the direction shown by VD1 in Figure 3) and to the other side (for example, the direction shown by VD2 in Figure 3).

[0075] In the support component of the present invention, for example, the circumferential end of the first peripheral connecting portion 31 and the circumferential end of the second peripheral connecting portion 32 may overlap in the thickness direction of the flat plate portion 30. The longer the overlap length between the end of the first peripheral connecting portion 31 and the end of the second peripheral connecting portion 32 in the circumferential direction, the smaller the bending stroke of the support component in one direction becomes, that is, the more difficult it is to bend the support component in one direction.

[0076] The support component of the present invention is not limited to extending in a straight line, but may also be curved, for example.

[0077] In the speaker unit of the present invention, the support components are not limited to extending linearly in the radial direction of the outer ring 21 and the inner ring 22, but may also extend in a direction inclined with respect to the radial direction, or in the tangential direction of the inner ring 22. Furthermore, the support components connecting the outer ring 21 and the inner ring 22 are not limited to being formed in a straight line, but may also be curved in the circumferential direction of the outer ring 21 and the inner ring 22, for example. In this case, the direction in which the support components are curved may be the same, for example, among multiple support components connecting the outer ring 21 and the inner ring 22.

[0078] In the speaker unit of the present invention, the support components and the expandable body may be directly connected to the frame 2 and the vibration unit 4, for example, without going through the outer ring 21 and the inner ring 22.

[0079] In the present invention, for example, a support unit may be configured in which a plurality of support components are arranged in parallel. In such a support unit, it is preferable that the directions in which the two connecting portions 35 of the support components are aligned are parallel to each other among the plurality of support components. In the speaker unit of the present invention, the frame 2 and the vibration unit 4 may be connected by such a support unit.

[0080] The support component of the present invention is not limited to being applied to speaker units, but may be applied to various devices and units. [Explanation of symbols]

[0081] 1...Speaker unit, 2...Frame, 4...Excitation part, 6,6B,6C,6D,6E...Support parts, 9...Extendable body, 10...Rigid body, 30...Flat plate part, 31...First peripheral connection part, 32...Second peripheral connection part, 33...Filling part, R1...First range, R2...Second range

Claims

1. Multiple flat plate sections arranged at intervals in the thickness direction, In the periphery of the flat plate portion as viewed from the thickness direction, a plurality of first peripheral connecting portions are provided in a first range in the circumferential direction of the flat plate portion, connecting two adjacent flat plate portions in the thickness direction, The periphery of the flat plate portion as viewed from the thickness direction includes a plurality of second peripheral connecting portions that connect two adjacent flat plate portions in the thickness direction within a second range in the circumferential direction of the flat plate portion, The lengths of the first peripheral connecting portion and the second peripheral connecting portion in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion. The first peripheral connecting portion and the second peripheral connecting portion are arranged alternately in the plate thickness direction. Viewed from the plate thickness direction, the first peripheral connecting portion and the second peripheral connecting portion are arranged to be continuous in the circumferential direction. A support component provided to fill the gap between two adjacent flat plate portions in the thickness direction, and comprising a filling portion having different elasticity and / or viscosity from the flat plate portion, the first peripheral connecting portion, and the second peripheral connecting portion.

2. The support component according to claim 1, wherein each of the multiple flat plate portions has a through hole formed therethrough in the direction of the plate thickness.

3. Each of the multiple flat plate portions has a notch formed in which the through hole opens at the periphery of the flat plate portion. The support component according to claim 2, wherein the notch is located on the periphery of the flat plate portion, avoiding the portion where the first peripheral connecting portion and the second peripheral connecting portion are connected when viewed from the plate thickness direction.

4. Multiple flat plate sections arranged at intervals in the thickness direction, In the periphery of the flat plate portion as viewed from the thickness direction, a plurality of first peripheral connecting portions are provided in a first range in the circumferential direction of the flat plate portion, connecting two adjacent flat plate portions in the thickness direction, The periphery of the flat plate portion as viewed from the thickness direction includes a plurality of second peripheral connecting portions that connect two adjacent flat plate portions in the thickness direction within a second range in the circumferential direction of the flat plate portion, The lengths of the first peripheral connecting portion and the second peripheral connecting portion in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion. The first peripheral connecting portion and the second peripheral connecting portion are arranged alternately in the plate thickness direction. Viewed from the plate thickness direction, the first peripheral connecting portion and the second peripheral connecting portion are arranged to be continuous in the circumferential direction. Each of the multiple flat plate portions has a through hole formed that penetrates in the direction of the plate thickness. Each of the multiple flat plate portions has a notch formed in which the through hole opens at the periphery of the flat plate portion. The notch is a support component located on the periphery of the flat plate portion, avoiding the portion where the first peripheral connecting portion and the second peripheral connecting portion are connected when viewed from the plate thickness direction.

5. The support component according to claim 3 or claim 4, wherein the direction in which the notch extends from the through hole to the periphery of the flat plate portion differs between two adjacent flat plate portions in the plate thickness direction.

6. Viewed from the plate thickness direction, the direction of the first peripheral edge connecting portion and the second peripheral edge connecting portion perpendicular to the circumferential direction is defined as the width direction. The support component according to any one of claims 1 to 4, wherein the end of the first peripheral connecting portion and the second peripheral connecting portion are continuous in the circumferential direction in at least a portion of the width direction.

7. The circumferential lengths of the first and second peripheral connecting portions are each half the total circumference of the periphery. The support component according to any one of claims 1 to 4, wherein, when viewed from the plate thickness direction, the first peripheral edge connecting portion and the second peripheral edge connecting portion are arranged continuously in the circumferential direction without overlapping in the plate thickness direction.

8. The support component according to any one of claims 1 to 4, wherein the size of the flat plate portion as viewed from the plate thickness direction differs between two adjacent flat plate portions.

9. Multiple flat plate sections arranged at intervals in the thickness direction, In the periphery of the flat plate portion as viewed from the thickness direction, a plurality of first peripheral connecting portions are provided in a first range in the circumferential direction of the flat plate portion, connecting two adjacent flat plate portions in the thickness direction, The periphery of the flat plate portion as viewed from the thickness direction includes a plurality of second peripheral connecting portions that connect two adjacent flat plate portions in the thickness direction within a second range in the circumferential direction of the flat plate portion, The lengths of the first peripheral connecting portion and the second peripheral connecting portion in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion. The first peripheral connecting portion and the second peripheral connecting portion are arranged alternately in the plate thickness direction. Viewed from the plate thickness direction, the first peripheral connecting portion and the second peripheral connecting portion are arranged to be continuous in the circumferential direction. A support component in which the size of the flat plate portion, as viewed from the plate thickness direction, differs between two adjacent flat plate portions.

10. The support component according to claim 9, wherein the size of the plurality of flat plate portions as viewed from the plate thickness direction gradually increases from one side to the other side in the plate thickness direction of the flat plate portion.

11. The invention comprises a frame, an excitation part provided to vibrate linearly with respect to the frame, and a support part according to any one of claims 1 to 4 that connects the frame and the excitation part and supports the excitation part, The multiple flat plates are arranged in a direction toward the vibration section from the frame, Viewed from the plate thickness direction, the two portions where the first peripheral connecting portion and the second peripheral connecting portion are connected to each other in the circumferential direction are speaker units arranged in a direction perpendicular to the linear direction.

12. A frame, an excitation part provided to vibrate linearly with respect to the frame, and a support part that connects the frame and the excitation part and supports the excitation part, The aforementioned support component is Multiple flat plate sections arranged at intervals in the thickness direction, In the periphery of the flat plate portion as viewed from the thickness direction, a plurality of first peripheral connecting portions are provided in a first range in the circumferential direction of the flat plate portion, connecting two adjacent flat plate portions in the thickness direction, The periphery of the flat plate portion as viewed from the thickness direction includes a plurality of second peripheral connecting portions that connect two adjacent flat plate portions in the thickness direction within a second range in the circumferential direction of the flat plate portion, The lengths of the first peripheral connecting portion and the second peripheral connecting portion in the circumferential direction are each shorter than the total circumference of the periphery of the flat plate portion. The first peripheral connecting portion and the second peripheral connecting portion are arranged alternately in the plate thickness direction. Viewed from the plate thickness direction, the first peripheral connecting portion and the second peripheral connecting portion are arranged to be continuous in the circumferential direction. The multiple flat plates are arranged in a direction toward the vibration section from the frame, Viewed from the plate thickness direction, the two portions where the first peripheral connecting portion and the second peripheral connecting portion are connected to each other in the circumferential direction are speaker units arranged in a direction perpendicular to the linear direction.

13. The speaker unit according to claim 12, comprising an expandable / contractable body that expands and contracts in the thickness direction of the flat plate, which is disposed between the frame and the support component, between the support component and the vibration-exciting part, and in the middle of the support component in the thickness direction of the plate.

Images