JP2018056853A - Speaker unit, electronic apparatus and mobile device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker unit that can realize sufficient weight saving while holding strength.SOLUTION: In a speaker unit 100 comprising a frame 30 being coupled by a diaphragm 21 and a magnetic circuit 22, the frame 30 comprises a first support part 31 that supports an outer periphery of the diaphragm 21, and has a cylindrical shape enclosing the outer periphery, a second support part 36 that is placed inside of the first support part 31 and supports the magnetic circuit 22, and a plurality of connection parts 37 that connect the first support part 31 and the second support part 36, and the connection part 37 has a width becoming larger in an emission direction from the second support part 36 toward the first support part 31, and a first width h1 in the emission direction in a first connection portion 37a being connected with the first support part 31 is larger than a second width h2 in the emission direction in a second connection portion 37b being connected with the second support part 36.SELECTED DRAWING: Figure 8

Description

  The present disclosure relates to a speaker unit, an electronic device, and a mobile device.

  Conventionally, a speaker is disclosed in which a frame that supports a diaphragm is reinforced by reinforcing ribs (see Patent Document 1).

International Publication No. 2013/161214

  By the way, in recent years, further reduction in weight has been required for the in-vehicle speaker unit in order to improve the fuel efficiency of the automobile, and the speaker described in Patent Document 1 is not sufficiently reduced in weight.

  Therefore, the present disclosure provides a speaker unit that can realize sufficient weight reduction while ensuring strength.

  A speaker unit according to an aspect of the present invention is a speaker unit including a frame in which a diaphragm and a magnetic circuit are coupled, and the frame supports the outer periphery of the diaphragm and has a cylindrical shape surrounding the outer periphery. A first support portion having a first support portion, a second support portion disposed inside the first support portion and supporting the magnetic circuit, and connecting the first support portion and the second support portion. A plurality of connecting portions, wherein the width of the speaker unit in the direction of sound emission increases from the second supporting portion toward the first supporting portion. The first width in the discharge direction at the first connection portion connected to the support portion is larger than the second width in the discharge direction at the second connection portion connected to the second support portion.

  In the speaker unit of the present disclosure, a sufficient weight reduction can be realized while ensuring the shape rigidity of the frame.

4 is a perspective view illustrating an example of an appearance of a speaker unit according to Embodiment 1. FIG. It is a figure which shows the example which fastens a speaker unit to an external housing | casing. It is a disassembled perspective view which shows an example of a structure of a speaker unit. It is a perspective view of a frame. It is a top view of the flame | frame at the time of seeing from the Z-axis direction plus side in FIG. FIG. 5 is a perspective view of a frame when viewed from an angle different from that in FIG. 4. It is the perspective view which looked at the frame from the lower part. It is a figure which shows the VIII-VIII cross section in FIG. FIG. 6 is a side view of the frame when viewed from a first line-of-sight direction D1 in FIG. 5. FIG. 6 is a side view of the frame when viewed from the second line-of-sight direction D2 in FIG. 5. 6 is a perspective view of a frame according to Embodiment 2. FIG. FIG. 12 is a plan view of the frame when viewed from the Z axis direction plus side in FIG. 11. It is a perspective view of the flame | frame at the time of seeing from the angle different from FIG. FIG. 13 is a side view of the frame when viewed from a first line-of-sight direction D1 in FIG. 12. FIG. 13 is a side view of the frame when viewed from a second line-of-sight direction D2 in FIG. 14 is an external view of an audio minicomponent system that is an electronic apparatus according to Embodiment 3. FIG. FIG. 10 is a cross-sectional view of an automobile that is a mobile device in a fourth embodiment.

  A speaker unit according to an aspect of the present invention is a speaker unit including a frame in which a diaphragm and a magnetic circuit are coupled, and the frame supports the outer periphery of the diaphragm and has a cylindrical shape surrounding the outer periphery. A first support portion having a first support portion, a second support portion disposed inside the first support portion and supporting the magnetic circuit, and connecting the first support portion and the second support portion. A plurality of connecting portions, wherein the width of the speaker unit in the direction of sound emission increases from the second supporting portion toward the first supporting portion. The first width in the discharge direction at the first connection portion connected to the support portion is larger than the second width in the discharge direction at the second connection portion connected to the second support portion.

  According to this, the width of the connection portion in the discharge direction increases toward the first support portion, and the first width in the first connection portion is larger than the second width in the second connection portion. Since it is large, weight reduction can be realized while securing the strength in the first connection portion.

  In addition, a gap may be provided between the first connection portion and the front end portion of the first support portion.

  For this reason, further weight reduction is realizable.

  Further, the connection portion is a portion formed along the radial direction of the diaphragm, and is erected from the first portion on the front side of the connection portion toward one side in the circumferential direction of the diaphragm, A first rib extending along the radial direction; and a second rib extending from the second portion on the rear side of the first portion toward the other side in the circumferential direction and extending along the radial direction; You may have.

  For this reason, the strength of the connecting portion can be further improved.

  Further, the connection portion may further include a third rib that is erected from the first rib toward the rear side and extends along the radial direction.

  For this reason, the strength of the connecting portion can be further improved.

  Further, the connection portion may further include a fourth rib that is erected from the second rib toward the rear side and extends along the radial direction.

  For this reason, the strength of the connecting portion can be further improved.

  Further, the connection portion may have a shape in which the first rib and the second rib are extended in the second connection portion.

  For this reason, the intensity | strength in a 2nd connection part can further be improved.

  The first rib and the second rib may be connected to the first support portion.

  For this reason, the intensity | strength in a 1st connection part can further be improved.

  Moreover, the said connection part may have a concave shape where the back side is dented toward the front side.

  For this reason, further weight reduction is realizable, ensuring the intensity | strength in a connection part.

  The frame is provided at a plurality of positions surrounding the outer periphery of the support portion in the support portion that supports the outer periphery of the diaphragm, a pedestal portion that extends outward from the outer periphery of the support portion, and the pedestal portion. A plurality of fastening portions, and a plurality of reinforcing portions disposed in a plurality of regions between the plurality of fastening portions in the pedestal portion, and fixed to the support portion and the pedestal portion, The plurality of reinforcing portions may include a first portion whose height from the pedestal portion is a first height and a second portion whose second height is lower than the first height. Good.

  According to this, each 2nd part of a some reinforcement part is made lower than the 1st part. For this reason, it is possible to reduce the weight of the frame by the lower amount. Thereby, while ensuring the shape rigidity required for a flame | frame, a flame | frame can fully be reduced in weight and a speaker unit can be reduced in weight sufficiently.

  A speaker unit according to an aspect of the present invention is a speaker unit having a reinforcing part, and includes a frame in which a diaphragm and a magnetic circuit are coupled, and the frame includes a support part that supports an outer periphery of the diaphragm; Between a pedestal part extending outward from the outer periphery of the support part, a plurality of fastening parts provided at a plurality of positions surrounding the outer periphery of the support part in the pedestal part, and the plurality of fastening parts in the pedestal part And a plurality of reinforcing portions fixed to the pedestal portion, the plurality of reinforcing portions having a height from the pedestal portion having a first height. A first portion having a height and a second portion having a second height lower than the first height.

  According to this, each 2nd part of a some reinforcement part is made lower than the 1st part. For this reason, it is possible to reduce the weight of the frame by the lower amount. Thereby, while ensuring the shape rigidity required for a flame | frame, a flame | frame can fully be reduced in weight and a speaker unit can be reduced in weight sufficiently.

  The plurality of reinforcing portions are fixed to the support portion and the pedestal portion in a posture intersecting with the support portion and the pedestal portion, and are arranged side by side in the circumferential direction of the outer periphery of the support portion. You may have a part.

  According to this, a some reinforcement part has a some board part fixed to a support part and a base part with the attitude | position which cross | intersects a support part and a base part. For this reason, the intensity | strength of a some reinforcement part is fully securable. Therefore, it is possible to realize both a sufficient weight reduction of the frame and a sufficient strength.

  Further, the plurality of reinforcing portions further have a curved plate-like curved plate portion disposed to face the pedestal portion, and the plurality of plate portions are interposed between the pedestal portion and the curved plate portion. It may be arranged and may be fixed to the curved plate part in the posture which intersects the curved plate part.

  According to this, the plurality of reinforcing portions constitute a hollow structure by the curved plate portion disposed to face the pedestal portion and the plurality of plate portions disposed between the pedestal portion and the curved plate portion. ing. For this reason, the strength at the base portion of the frame can be sufficiently secured.

  Further, the plurality of reinforcing portions may have a shape along a direction from a substantially central position of the reinforcing portion toward a central axis of the speaker unit.

  For this reason, for example, when the frame is resin-molded, a mold having a shape substantially parallel to the direction from the substantially central position of the reinforcing portion toward the central axis of the speaker unit may be used. Can be easily realized.

  The plurality of reinforcing portions further include a wall portion that is erected on the pedestal portion outside the support portion and is disposed to face the support portion, and the plurality of plate portions are the support portions. It is arrange | positioned between a wall part and the said wall part, Furthermore, you may fix to the said wall part in the attitude | position which cross | intersects the said wall part.

  According to this, the plurality of reinforcing portions constitute a hollow structure by the wall portion disposed to face the support portion and the plurality of plate portions disposed between the support portion and the wall portion. . For this reason, the strength at the base portion of the frame can be sufficiently secured.

  Further, the plurality of reinforcing portions may have a shape along the axial direction of the support portion.

  For this reason, for example, when the frame is resin-molded, a mold having a shape substantially parallel to the axial direction of the support portion may be used. Therefore, the resin molding of the frame can be easily realized.

  The frame is further provided between a first fastening portion and a second fastening portion of the plurality of fastening portions, and a connector to which wiring for inputting an audio signal to the speaker unit is connected. And the rigidity of the first reinforcing portion provided between the first fastening portion and the second fastening portion among the plurality of reinforcing portions is a second stiffness other than the first reinforcing portion. It may be smaller than the rigidity of the reinforcing part.

  In the area of the pedestal part where the connector part is provided, the rigidity is increased by the amount of the connector part formed. Therefore, the rigidity of the first reinforcing part is made smaller than the rigidity of the second reinforcing part. The rigidity in a plurality of regions of the part can be made uniform. For this reason, it can suppress that the said specific site | part deform | transforms or is damaged by applying a load only to the specific site | part of the base part 32. FIG.

  Further, the number of the plurality of plate portions included in the first reinforcement portion may be smaller than the number of the plurality of plate portions included in the second reinforcement portion.

  For this reason, the rigidity of the 1st reinforcement part can be made smaller than the rigidity of the 2nd reinforcement part by simple composition.

  Further, the plurality of reinforcing portions may have a curved surface shape convex toward the pedestal portion side when viewed from the outside of the support portion on the side opposite to the pedestal portion side.

  For this reason, the rigidity of a some reinforcement part can be improved.

  Further, the plurality of reinforcing portions may have a valley-like shape that protrudes toward the pedestal portion when viewed from the outside of the support portion on the side opposite to the pedestal portion side.

  For this reason, the rigidity of a some reinforcement part can be improved.

  Further, the plurality of fastening portions have plate-like projecting portions projecting outward from the outer periphery of the support portion, and the plurality of reinforcing portions are further (i) further in the circumferential direction of the outer periphery of the support portion. Both ends of the reinforcing part are fixed to the projecting parts of the plurality of fastening parts corresponding to the reinforcing part, and (ii) the height from the pedestal part at the both ends of the reinforcing part is the height of the reinforcing part. You may have a structure higher than the height from the said base part in the site | part between these fastening parts.

  Generally, an airtight property and a watertight property are improved by disposing an elastic member as a gasket between the pedestal portion and the opening portion of the speaker unit. In addition, the speaker unit is elasticated because the elastic member is disposed between the pedestal portion and the opening portion, and is fastened to the opening portion by the fastening member so that compressive stress is exerted at a plurality of fastening portions of the frame. Receives repulsive force from the member. In particular, in the region between the plurality of fastening portions of the pedestal portion, since it is not fastened by the fastening member, it is easily deformed so as to be convex on the opposite side to the opening. Among the regions between the plurality of fastening portions that are likely to be deformed, the height from the pedestal portion at both ends of the reinforcement portion is higher than the height from the pedestal portion at the portion between the plurality of fastening portions of the reinforcement portion. Since it is set as a high structure, it can suppress deform | transforming so that the site | part between several fastening parts may become convex on the opposite side to an opening part. For this reason, the airtightness and watertightness between a speaker unit and an opening part can be improved.

  Further, the plurality of reinforcing portions have substantially the same height from the pedestal portion at the both ends of the reinforcing portion, and the height from the pedestal portion in the vicinity of the center in the circumferential direction of the reinforcing portion The minimum height of the height of the reinforcing portion from the pedestal portion may be used.

  For this reason, it can suppress effectively that the base part 32 deform | transforms so that it may become convex on the opposite side to an opening part. For this reason, the airtightness and watertightness between a speaker unit and an opening part can be improved effectively.

  These general or specific aspects may be realized by an electronic device having a speaker unit or a mobile device having a speaker unit.

  Hereinafter, a speaker unit according to one embodiment of the present invention will be specifically described with reference to the drawings.

  Note that each of the embodiments described below shows a specific example of the present invention. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

(Embodiment 1)
The speaker unit according to Embodiment 1 will be described with reference to FIGS.

  In this embodiment, the central axis of the speaker unit is the Z-axis direction, the direction in which the connector is located with respect to the central axis is the Y-axis direction, and the direction perpendicular to the Z-axis direction and the Y-axis direction is the X-axis. The direction. In FIG. 1 to FIG. 10, the side indicated by the arrows indicating the X axis, the Y axis, and the Z axis is the plus side in each direction, and the opposite side of each direction is the minus side. The central axis of the speaker unit is a substantially conical central axis of the speaker unit.

[1-1. Configuration of speaker unit]
A configuration of speaker unit 100 according to Embodiment 1 will be described with reference to FIGS.

  FIG. 1 is a perspective view showing an example of the appearance of the speaker unit according to Embodiment 1. FIG. FIG. 2 is a diagram illustrating an example in which the speaker unit is fastened to the external housing. FIG. 3 is an exploded perspective view showing an example of the configuration of the speaker unit.

  The speaker unit 100 is provided on the side of the frame 30 on which the speaker unit 100 emits sound (front side, Z-axis) for the purpose of improving airtightness and water tightness and reducing noise caused by vibration during operation of the speaker unit 100. In many cases, the first elastic member 10 and the second elastic member 40 are provided on the direction plus side) and the opposite side, respectively.

  The speaker unit 100 includes a frame 30 in which a substantially conical diaphragm 21 and a substantially cylindrical magnetic circuit 22 are coupled. The magnetic circuit 22 includes a magnet, a plate, and a yoke (not shown), and vibrates the diaphragm 21 in accordance with an audio signal input to a voice coil (not shown). The magnetic circuit 22 may be an inner magnet type or an outer magnet type.

  The frame 30 supports the diaphragm 21. The frame 30 has a plurality of fastening portions 33 provided in the frame 30 and a plurality of through holes 112 provided in the outer case 110 in a circular opening 111 provided in the outer case 110 such as a front door of an automobile. The speaker unit 100 is fixed to the external housing by being fastened by a fastening member (not shown). The frame 30 is made of, for example, resin.

[1-2. Frame configuration]
Next, the detailed configuration of the frame 30 will be described with reference to FIGS.

  FIG. 4 is a perspective view of the frame according to the first embodiment. FIG. 5 is a plan view of the frame when viewed from the positive side in the Z-axis direction. FIG. 6 is a perspective view of the frame when viewed from an angle different from that in FIG. 4.

  As shown in FIGS. 4 to 6, the frame 30 includes a substantially cylindrical first support portion 31, a pedestal portion 32, a plurality of fastening portions 33, and a reinforcing portion 34. The frame 30 may further include a second support portion 36, a plurality of connection portions 37, and a connector portion 38. The frame 30 has a configuration in which the constituent elements 31 to 38 are integrally formed of resin.

  The first support portion 31 is a portion that supports the diaphragm 21 in the speaker unit 100. Specifically, the first support portion 31 is a member having a substantially cylindrical shape that supports the outer periphery of the diaphragm 21 disposed inside. The first support portion 31 has a shape corresponding to the outer periphery of the diaphragm 21.

  The second support part 36 is a part that supports a part of the damper, which is a vibration component in the speaker unit 100, and a part of the magnetic circuit 22. Specifically, the second support portion 36 is a substantially conical and bottomed substantially cylindrical member. The second support portion 36 is disposed inside the first support portion 31. The second support portion 36 is a portion that covers the Z-axis direction minus side of the Z-axis direction minus side portion of the speaker unit 100, and has a shape corresponding to the Z-axis direction minus side portion of the speaker unit 100.

  The plurality of connecting portions 37 are portions that are arranged between the first support portion 31 and the second support portion 36 and connect the first support portion 31 and the second support portion 36. As shown in FIG. 4, the first support portion 31 and the second support portion 36 include a plurality of connection portions 37 such that the second support portion 36 is positioned inward of the first support portion 31. Connected by. The plurality of connection portions 37 are beam-shaped portions.

  The pedestal portion 32 is a portion that extends outward from the outer periphery of the first support portion 31 and faces an opening provided in the external housing. The pedestal part 32 is a plate-like part, and the airtightness and water tightness between the pedestal part 32 and the opening part are improved by sandwiching the second elastic member 40 with the opening part.

  The first support portion 31 has a contact surface 35 that faces the pedestal portion 32 on the positive side in the Z-axis direction. The contact surface 35 is in contact with an opening (not shown) provided in the casing on the sound emitting side of the speaker unit 100 via the first elastic member 10.

  The plurality of (three in the present embodiment) fastening portions 33 are portions provided at a plurality of positions surrounding the outer periphery of the first support portion 31 in the pedestal portion 32. Specifically, the plurality of fastening portions 33 are portions that protrude from the pedestal portion 32 so as to extend further outward (in the direction away from the central axis), and are thicker than the pedestal portion 32. The some fastening part 33 has the through-hole 33a for a predetermined fastening member to penetrate. The predetermined fastening member is, for example, a screw, a bolt, or a rivet. That is, the speaker unit 100 is fixed at a predetermined position of the opening 111 by being fastened to the opening 111 by a predetermined fastening member at the plurality of fastening portions 33.

  The plurality of fastening portions 33 have plate-like protrusions 33 b that protrude outward from the outer periphery of the first support portion 31. Specifically, the plate-like projecting portion 33b is a pair of portions formed with one fastening portion 33 at both ends in the circumferential direction of the outer periphery of the first support portion 31, and in the Z-axis direction and the outer periphery thereof. It has a shape substantially parallel to the radial direction. The protruding portion 33 b is formed continuously from the outer peripheral surface of the first support portion 31 to the surface on the plus side in the Z-axis direction of the pedestal portion 32. For this reason, the intensity | strength of the some fastening part 33 is ensured and it can reduce that the several fastening part 33 bends with respect to the base part 32. FIG.

  Further, the plurality of fastening portions 33 are arranged at positions separated from each other by 120 degrees with the position corresponding to the central axis of the speaker unit 100 of the frame 30 as the center. That is, the plurality of fastening portions 33 are arranged at equal intervals on the outer periphery of the first support portion 31.

  The plurality of reinforcing portions 34 are disposed in a plurality of regions between the plurality of fastening portions 33 in the pedestal portion 32, and are fixed to the outer periphery of the first support portion 31 and the pedestal portion 32. The plurality of reinforcing portions 34 are fixed to the surface of the pedestal portion 32 opposite to the opening 111 side (that is, the Z-axis direction plus side). The plurality of reinforcing portions 34 include a curved plate portion 34 a and a plurality of plate portions 34 b disposed between the curved plate portion 34 a and the pedestal portion 32. That is, the plurality of reinforcing portions 34 are hollow structures having a plurality of spaces formed by partitioning the space between the pedestal portion 32 and the curved plate portion 34a by the plurality of plate portions 34b. Note that the curved plate portion 34a itself has a solid structure. Moreover, the some board part 34b is a solid structure in itself.

  The curved plate portion 34 a is a curved plate-shaped portion that is disposed to face the pedestal portion 32. The curved plate portion 34 a extends outward from the outer peripheral surface of the first support portion 31 and intersects the axial direction of the first support portion 31 (that is, the Z-axis direction).

  The plurality of plate portions 34b are fixed to the first support portion 31, the pedestal portion 32, and the curved plate portion 34a in a posture intersecting with the first support portion 31, the pedestal portion 32, and the curved plate portion 34a, It is a site | part arrange | positioned along with the circumferential direction of the outer periphery of the support part 31. FIG.

  As shown in FIG. 6, the connector portion 38 includes a first fastening portion 33 </ b> A disposed on the X axis direction plus side among the plurality of fastening portions 33 and a second fastening disposed on the X axis direction minus side. It is a part provided between the unit 33 </ b> B and a wiring for inputting an audio signal to the speaker unit 20.

  Next, a detailed configuration of the plurality of connection portions 37 will be described with reference to FIGS. 7 and 8.

  Since each of the plurality of connection portions 37 has the same shape, the connection portion 37 disposed along the Y-axis direction will be described here, and the description of the other connection portions 37 will be omitted.

  FIG. 7 is a perspective view of the frame as viewed from below. FIG. 8 is a view showing a VIII-VIII cross section in FIG. 5. Specifically, FIG. 8A is a diagram showing the entire VIII-VIII cross section in FIG. 5, and FIG. 8B is an enlarged view of the vicinity of the connection portion 37 in FIG. 8A. It is.

  As shown in FIG. 7, the connection portion 37 has a width in the discharge direction (Z-axis direction) that increases from the second support portion 36 toward the first support portion 31. The first width h1 in the Z-axis direction of the first connection portion 37a connected to the first support portion 31 is the Z width in the second connection portion 37b connected to the second support portion 36. It is larger than the second width h2 in the axial direction. And the 1st connection part 37a is provided with the clearance gap of the width | variety h3 between the edge parts (namely, contact surface 35) of the Z-axis direction plus side of the 1st support part 37. As shown in FIG.

  Further, the connecting portion 37 is a portion formed along the radial direction of the diaphragm 21. That is, the plurality of connection portions 37 are formed radially from the second support portion 36 toward the first support portion 31.

  Further, as shown in FIG. 8, the connecting portion 37 may include a first rib 51 and a second rib 52. The first rib 51 is erected from the first portion 37c on the front side (Z-axis direction plus side) of the connecting portion 37 toward one side (right rotation direction in a top view) of the diaphragm 21 in the circumferential direction. It is a part extending along the direction. The second rib 52 is erected from the second part 37d on the rear side (Z-axis direction minus side) of the first part 37c toward the other side in the circumferential direction (left rotation direction in top view), and is in the radial direction. Extending along. Thus, the connection part 37 is formed with the first rib 51 and the second rib 52 and has a substantially Z-shaped cross section.

  Further, the connecting portion 37 may further include a third rib 53 that is erected from the first rib 51 toward the rear side (Z-axis direction minus side) and extends along the radial direction. Further, the connecting portion 37 may further include a fourth rib 54 that is erected from the second rib 52 toward the rear side (Z-axis direction minus side) and extends along the radial direction.

  As described above, the connection portion 37 includes the first rib 51, the second rib 52, the third rib 53, and the fourth rib 54, and the ribs 51 to 54 are connected to the connection portion 37. It may be formed over the entire length.

  Further, as shown in FIG. 7, in the first connection portion 37 a, the connection portion 37 is connected to the end in the direction in which the connection portion 37 extends and the inner periphery of the first support portion 31. . And since the connection part 37 has the ribs 51-54 formed over the whole length of the connection part 37, the 1st rib 51 and the 2nd rib are connected with the 1st support part 31. Also good. Further, the third rib 53 and the fourth rib may be connected to the first support portion 51. The connection portion 37 is connected to the first support portion 31 by being fixed.

  In addition, in the connection portion 37, the upper portion of the connection portion 37 and the lower surface on the outer peripheral side of the second support portion 36 are connected in the second connection portion 37 b. That is, the connecting portion 37 may have a shape in which the first rib 51 and the second rib 52 are extended in the second connecting portion 37b. Further, the connecting portion 37 may have a shape in which the third rib 53 and the fourth rib 54 are further extended in the second connecting portion 37b. As described above, the second connection portion 37 b of the connection portion 37 is connected on the lower side of the outer peripheral side of the second support portion 36. That is, the portion that protrudes from the lower side of the outer periphery of the second support portion 36 toward the minus side in the Z-axis direction is the second connection portion 37b, and the ribs 51 to 54 are formed up to the second connection portion 37b. Also good.

  Further, as shown in FIG. 7, the connecting portion 37 may have a concave shape 55 in which the Z-axis direction minus side is recessed toward the Z-axis direction plus side.

  Next, the shape seen from the side of the plurality of reinforcing portions 34 (that is, the direction orthogonal to the Z-axis direction) will be described with reference to FIGS. 9 and 10.

  FIG. 9 is a side view of the frame when viewed from the first line-of-sight direction D1 in FIG. FIG. 10 is a side view of the frame when viewed from the second line-of-sight direction D2 in FIG.

  As shown in FIGS. 9 and 10, the plurality of reinforcing portions 34 are arranged on the side opposite to the pedestal portion 32 (that is, the Z-axis direction minus side) (that is, the Z-axis direction plus side) of the first support portion 31. As viewed from the outside, it has a curved surface shape that is convex on the negative side in the Z-axis direction. That is, the shape of the curved plate portion 34a of the plurality of reinforcing portions 34 is a curved shape that is convex on the negative side in the Z-axis direction.

  In addition, the plurality of reinforcing portions 34 are configured such that both ends of the reinforcing portion 34 in the circumferential direction of the outer periphery of the first support portion 31 correspond to a plurality of fastening portions 33 to which the reinforcing portion 34 corresponds (that is, both ends of the reinforcing portion 34 It is being fixed to the protrusion part 33b of the two fastening parts 33) arrange | positioned at the side. In addition, the plurality of reinforcing portions 34 are such that the first heights H11 and H21 from the pedestal portion 32 in the first portions at both ends of the reinforcing portion 34 are in the middle between the plurality of fastening portions 33 of the reinforcing portion 34. The second portion has a structure higher than the second heights H12 and H22 from the base portion 32. The first heights H <b> 11 and H <b> 21 are substantially equal to the height of the first support portion 31 from the pedestal portion 32. The second heights H12 and H22 may be less than or equal to ½ of the first heights H11 and H21. The first heights H11 and H21 are the maximum heights of the plurality of reinforcing portions 34 from the pedestal portion 32, and the second heights H12 and H22 are the plurality of heights from the pedestal portion 32. The height of the reinforcement part 34 is the minimum height.

  Further, the plurality of reinforcing portions 34 may have a shape along the direction from the substantially central position of the reinforcing portion toward the central axis of the speaker unit 100.

  As shown in FIGS. 5, 9, and 10, among the plurality of reinforcing portions 34, the configuration of the first reinforcing portion 34 </ b> A in which the connector portion 38 is disposed and the first portion in which the connector portion 38 is not disposed. This is different from the configuration of the two reinforcing portions 34B.

  Specifically, among the plurality of reinforcing portions 34, the number of the plurality of plate portions 34b included in the first reinforcing portion 34A provided between the first fastening portion 33A and the second fastening portion 33B is the first number. The number of the plurality of plate portions 34b included in the second reinforcing portion 34B other than the reinforcing portion 34A is smaller. In addition, the first height H21 of the first reinforcing portion 34A is lower than the first height H11 of the first reinforcing portion 34B. Therefore, the rigidity of the first reinforcing portion 34A is smaller than the rigidity of the second reinforcing portion 34B. This is because the connector portion 38 is disposed in the first reinforcing portion 34A, so that the combined rigidity of the first reinforcing portion 34A and the connector portion 38 is equal to the rigidity of the second reinforcing portion 34B. This is because it is adjusted. That is, the rigidity of the plurality of regions between the plurality of fastening portions 33 in the pedestal portion 32 is substantially equal to each other.

[1-3. Effect etc.]
The speaker unit 100 according to the present embodiment includes a frame 30 in which the diaphragm 21 and the magnetic circuit 22 are coupled on the front side (Z-axis direction plus side). The frame 30 includes a first support portion 31, a second support portion 36, and a plurality of connection portions 37. The first support portion 31 supports the outer periphery of the diaphragm 21 and has a cylindrical shape surrounding the outer periphery. The second support portion 36 is disposed inside the first support portion 31 and supports the magnetic circuit 22. The plurality of connection portions 37 connect the first support portion 31 and the second support portion 36. The connection portion 37 has a width in the Z-axis direction that increases from the second support portion 36 toward the first support portion 31. The first width h <b> 1 in the Z-axis direction of the first connection portion 37 a connected to the first support portion 31 is equal to the Z width in the second connection portion 37 b connected to the second support portion 36. It is larger than the second width h2 in the axial direction.

  According to this, the width of the connecting portion 37 in the Z-axis direction increases toward the first support portion 31, and the first width h1 of the first connecting portion 37a is the same as that of the second connecting portion 37b. Since it is larger than the second width h2, it is possible to reduce the weight while securing the strength of the first connection portion 37a.

  In the present embodiment, the first connecting portion 37a is provided with a gap between the first support portion 31 and the end on the plus side in the Z-axis direction. For this reason, further weight reduction is realizable.

  In the present embodiment, the connecting portion 37 is a portion formed along the radial direction of the diaphragm 21. The connecting portion 37 has a first rib 51 and a second rib 52. The first rib 51 is erected from the first portion 37c on the plus side in the Z-axis direction of the connecting portion 37 toward one side in the circumferential direction of the diaphragm 21 (right rotation direction in a top view), and extends along the radial direction. It is a part extending. The second rib 52 is erected from the second portion 37d on the minus side in the Z-axis direction relative to the first portion 37c toward the other side in the circumferential direction (left rotation direction in the top view) and extends along the radial direction. It is a part. For this reason, the strength of the connecting portion 37 can be further improved.

  Further, in the present embodiment, the connecting portion 37 further includes a third rib 53 that stands from the first rib 51 toward the negative side in the Z-axis direction and extends along the radial direction. For this reason, the strength of the connecting portion 37 can be further improved.

  Further, in the present embodiment, the connecting portion 37 further includes a fourth rib 54 that is erected from the second rib 52 toward the minus side in the Z-axis direction and extends along the radial direction. For this reason, the strength of the connecting portion 37 can be further improved.

  Further, in the present embodiment, the connection portion 37 has a shape in which the first rib 51 and the second rib 52 are extended in the second connection portion 37b. For this reason, the intensity | strength in the 2nd connection part 37b can further be improved.

  In the present embodiment, the first rib 51 and the second rib 52 are connected to the first support portion 31. For this reason, the intensity | strength in the 1st connection part 37a can further be improved.

  In the present embodiment, the connecting portion 37 has a concave shape in which the negative side in the Z-axis direction is recessed toward the positive side in the Z-axis direction. For this reason, further weight reduction is realizable, ensuring the intensity | strength in the connection part 37. FIG.

  The speaker unit 100 in the present embodiment is a speaker unit 100 that is fixed to the opening 111 while the opening 111 is closed. The speaker unit 100 includes a frame 30 that is coupled to the diaphragm 21 and the magnetic circuit 22. The frame 30 includes a substantially cylindrical first support portion 31, a pedestal portion 32, a plurality of fastening portions 33, and a plurality of reinforcing portions 34. The 1st support part 31 is a site | part which supports the outer periphery of the diaphragm 21 arrange | positioned inside. The pedestal portion 32 is a portion that extends outward from the outer periphery of the first support portion 31 and faces the opening 111. The plurality of fastening portions 33 are portions that are provided side by side at a plurality of positions surrounding the outer periphery of the first support portion 31 in the pedestal portion 32 and fastened to the opening 111. The plurality of reinforcing portions 34 are arranged in a plurality of regions between the plurality of fastening portions 33 in the pedestal portion 32, and are opposite to the outer periphery of the first support portion 31 and the opening 111 side of the pedestal portion 32. It is the site | part of the hollow structure fixed to the surface of this. The plurality of reinforcing portions 34 include a first portion whose height from the pedestal portion 32 is the first height H11, H21, and a second height H12, H22 that is lower than the first height H11, H21. And a second part.

  According to this, the 2nd part of the some reinforcement part 34 is made lower than the 1st part. For this reason, the frame 30 can be reduced in weight by the amount lowered. Thereby, the frame 30 can be reduced in weight sufficiently, and the speaker unit 100 can be reduced in weight sufficiently.

  Further, in the present embodiment, the plurality of reinforcing portions 34 are fixed to the first support portion 31 and the pedestal portion 32 in a posture that intersects the first support portion 31 and the pedestal portion 32, and the first support portion. It has the some board part 34b arrange | positioned along with the circumferential direction of the outer periphery of 31. FIG.

  According to this, in the hollow structure, the plurality of reinforcing portions 34 are a plurality of plate portions fixed to the first support portion 31 and the pedestal portion 32 in a posture intersecting with the first support portion 31 and the pedestal portion 32. 34b. For this reason, the strength of the plurality of reinforcing portions 34 can be sufficiently ensured. Therefore, it is possible to realize both a sufficient weight reduction of the frame and a sufficient strength.

  Further, in the present embodiment, the plurality of reinforcing portions 34 further include a curved plate-like curved plate portion 34 a disposed to face the pedestal portion 32, and the plurality of plate portions 34 b include the pedestal portion 32 and It arrange | positions between the curved board parts 34a, and is further fixed to the curved board part 34a in the attitude | position which cross | intersects the curved board part 34a.

  According to this, the plurality of reinforcing portions 34 are composed of a curved plate portion 34a disposed to face the pedestal portion 32 and a plurality of plate portions 34b disposed between the pedestal portion 32 and the curved plate portion 34a. Constitutes a hollow structure. For this reason, the strength of the base portion 32 of the frame 30 can be sufficiently secured.

  In the present embodiment, the plurality of reinforcing portions 34 are formed along the direction from the substantially central position of the reinforcing portion 34 toward the central axis of the speaker unit 100.

  For this reason, for example, when the frame 30 is resin-molded, a mold having a shape substantially parallel to the direction from the substantially central position of the reinforcing portion 34 toward the central axis of the speaker body 20 may be used. 30 resin moldings can be easily realized.

  In the present embodiment, the frame 30 is further provided between the first fastening portion 33 </ b> A and the second fastening portion 33 </ b> B among the plurality of fastening portions 33, and inputs an audio signal to the speaker body 20. A connector portion 38 to which wiring for connecting is connected. Of the plurality of reinforcing portions 34, the rigidity of the first reinforcing portion 34A provided between the first fastening portion 33A and the second fastening portion 33B is the second reinforcement other than the first reinforcing portion 34A. It is smaller than the rigidity of the portion 34B.

  In the region of the pedestal portion 32 where the connector portion 38 is provided, the rigidity is increased by the amount of the connector portion 38 formed. Therefore, the rigidity of the first reinforcing portion 34A is smaller than the rigidity of the second reinforcing portion 34B. By doing so, the rigidity in the plurality of regions of the pedestal portion 32 can be made uniform. For this reason, it can suppress that the said specific site | part deform | transforms or is damaged by applying a load only to the specific site | part of the base part 32. FIG.

  In the present embodiment, the number of the plurality of plate portions 34b included in the first reinforcement portion 34A is smaller than the number of the plurality of plate portions 34b included in the second reinforcement portion 34B. For this reason, the rigidity of the first reinforcing portion 34A can be made smaller than the rigidity of the second reinforcing portion 34B with a simple configuration.

  Further, in the present embodiment, the plurality of reinforcing portions 34 have a curved surface shape convex toward the pedestal portion 32 side when viewed from the outside of the first support portion 31 on the side opposite to the pedestal portion 32 side. . For this reason, the rigidity of the some reinforcement part 34 can be improved.

  Further, in the present embodiment, the plurality of fastening portions 33 have plate-like protruding portions 33 b that protrude outward from the outer periphery of the first support portion 31. The plurality of reinforcing portions 34 are further fixed at both ends of the reinforcing portion 34 in the circumferential direction of the outer periphery of the first support portion 31 to the protruding portions 33b of the plurality of fastening portions 33 to which the reinforcing portions 34 correspond. ing. In addition, the heights H11 and H21 from the pedestal portion 32 at both ends of the reinforcement portion 34 are the heights from the pedestal portion 32 at the portion between the plurality of fastening portions 33 of the reinforcement portion 34. It has a structure higher than H12 and H22.

  In general, the second elastic member 40 as a gasket is disposed between the pedestal 32 and the opening 111 of the speaker unit 100, thereby improving airtightness and watertightness. In addition, the speaker unit 100 includes the opening 111 so that compressive stress is applied to the plurality of fastening portions 33 of the frame 30 after the second elastic member 40 is disposed between the base portion 32 and the opening 111. Are fastened by fastening members. For this reason, the base portion 32 of the frame 30 receives a repulsive force from the second elastic member 40. In particular, in the region between the plurality of fastening portions 33 of the pedestal portion 32, the base portion 32 is not fastened by the fastening member, and thus easily deforms so as to protrude to the opposite side to the opening 111. The plurality of reinforcing portions 34 have a height from the pedestal portion 32 at both ends of the reinforcing portion 34 in the region between the plurality of fastening portions 33 that are easily deformed in the pedestal portion 32. The structure between the portions 33 is higher than the height from the pedestal portion 32. For this reason, it can suppress that the site | part between the some fastening parts 33 of the base part 32 deform | transforms so that it may become convex on the opposite side to the opening part 111. FIG. Thus, since it can suppress that the base part 32 deform | transforms, it can suppress that a clearance gap produces between the base part 32 and the opening part 111. FIG. Therefore, airtightness and watertightness between the speaker unit 100 and the opening 111 can be improved.

  In the present embodiment, the plurality of reinforcing portions 34 have substantially the same height H11 (H21) from the pedestal portion 32 at both ends of the reinforcing portion 34. The plurality of reinforcing portions 34 are such that the heights H12 and H22 of the reinforcing portion 34 from the pedestal portion 32 near the center in the circumferential direction of the outer periphery of the first support portion 31 are the pedestal of the reinforcing portion 34. This is the minimum height from the portion 32.

  For this reason, it can suppress effectively that the base part 32 deform | transforms so that it may become convex on the opposite side to the opening part 111. FIG. For this reason, the airtightness and watertightness between the speaker unit 100 and the opening part 111 can be improved effectively.

(Embodiment 2)
[2-1. Frame configuration]
Next, the speaker unit according to Embodiment 2 will be described with reference to FIGS.

  Since the configuration of the speaker unit according to the second embodiment is the same as that of the speaker unit 100 of the first embodiment except for the frame 130, only the configuration of the frame 130 will be described. Moreover, since the structure of the flame | frame 30 concerning Embodiment 1 and the structure of the some reinforcement part 134 are mainly different, the structure of the some reinforcement part 134 is mainly demonstrated. In addition, about the structure which is common in Embodiment 1, it demonstrates with the code | symbol similar to Embodiment 1. FIG. Further, the frame 130 has a configuration in which the constituent elements 31 to 33, 134, and 35 to 38 are integrally formed of resin.

  FIG. 11 is a perspective view of a frame according to the second embodiment. FIG. 12 is a plan view of the frame when viewed from the positive side in the Z-axis direction. FIG. 13 is a perspective view of the frame when viewed from an angle different from that in FIG. 11.

  As shown in FIGS. 11 to 13, the plurality of reinforcing portions 134 include a wall portion 134 a and a plurality of plate portions 134 b disposed between the wall portion 134 a and the first support portion 31.

  The plurality of reinforcing portions 134 are arranged in a plurality of regions between the plurality of fastening portions 33 in the pedestal portion 32, similarly to the plurality of reinforcing portions 34 of the frame 30 of the first embodiment. The outer periphery and the pedestal 32 are fixed. The plurality of reinforcing portions 134 are fixed to the surface of the pedestal portion 32 opposite to the opening 111 side (that is, the Z-axis direction plus side). The plurality of reinforcing portions 134 include a wall portion 134 a and a plurality of plate portions 134 b disposed between the wall portion 134 a and the first support portion 31. That is, the plurality of reinforcing portions 134 are hollow structures having a plurality of spaces formed by partitioning the spaces between the first support portion 31 and the wall portion 134a by the plurality of plate portions 134b. is there. Note that the wall 134a itself has a solid structure. Further, the plurality of plate portions 134b themselves have a solid structure.

  The wall portion 134 a is a curved plate-like portion that is erected on the pedestal portion 32 outside the first support portion 31 and is disposed to face the first support portion 31. The wall part 134 a has a shape along the outer peripheral surface of the first support part 31.

  The plurality of plate portions 134b are fixed to the first support portion 31, the pedestal portion 32, and the wall portion 134a in a posture intersecting with the first support portion 31, the pedestal portion 32, and the wall portion 134a. It is a site | part arrange | positioned along with the circumferential direction of the outer periphery of 31. FIG.

  Here, the shape seen from the side of the plurality of reinforcing portions 134 (that is, the direction orthogonal to the Z-axis direction) will be described with reference to FIGS. 14 and 15.

  FIG. 14 is a side view of the frame when viewed from the first line-of-sight direction D1 in FIG. FIG. 15 is a side view of the frame when viewed from the second line-of-sight direction D2 in FIG.

  As shown in FIGS. 14 and 15, the plurality of reinforcing portions 134 are arranged on the side opposite to the pedestal portion 32 (that is, the Z axis direction minus side) (that is, the Z axis direction plus side). As viewed from the outside, it has a curved surface shape that is convex on the negative side in the Z-axis direction. That is, the shape of the end portion on the plus side in the Z-axis direction of the wall portion 134a of the plurality of reinforcing portions 134 is a curved shape that is convex on the minus side in the Z-axis direction.

  In addition, the plurality of reinforcing portions 134 include a plurality of fastening portions 33 (that is, both ends of the reinforcing portion 134) corresponding to the reinforcing portions 134 at both ends of the reinforcing portion 134 in the circumferential direction of the outer periphery of the first support portion 31. It is being fixed to the protrusion part 33b of the two fastening parts 33) arrange | positioned at the side. In addition, the plurality of reinforcing portions 134 are arranged such that the first heights H31 and H41 from the pedestal portion 32 in the first portions at both ends of the reinforcing portion 134 are in the middle between the plurality of fastening portions 33 of the reinforcing portion 134. The second portion has a structure higher than the second heights H32 and H42 from the pedestal portion 32. The first heights H31 and H41 are substantially equal to the height of the first support portion 31 from the pedestal portion 32. Further, the second heights H32 and H42 may be less than or equal to ½ of the first heights H31 and H41. The first heights H31 and H41 are the maximum heights of the plurality of reinforcing portions 134 from the pedestal portion 32, and the second heights H32 and H32 are the plurality of heights from the pedestal portion 32. The height of the reinforcing part 134 is the minimum height.

  Further, the plurality of reinforcing portions 134 may have a shape along the axial direction (that is, the Z-axis direction) of the first support portion 31.

  Further, among the plurality of reinforcing portions 134, the configuration of the first reinforcing portion 134A in which the connector portion 38 is disposed is different from the configuration of the second reinforcing portion 134B in which the connector portion 38 is not disposed.

  Specifically, among the plurality of reinforcing portions 134, the number of the plurality of plate portions 34b included in the first reinforcing portion 134A provided between the first fastening portion 33A and the second fastening portion 33B is the first number. The number of the plurality of plate portions 34b included in the second reinforcing portion 134B other than the reinforcing portion 134A is smaller. Further, the first height H31 of the first reinforcing portion 134A is lower than the first height H31 of the first reinforcing portion 134B. Therefore, the rigidity of the first reinforcing portion 134A is smaller than the rigidity of the second reinforcing portion 134B. As in the first embodiment, since the connector portion 38 is disposed in the first reinforcing portion 134A, the rigidity of the first reinforcing portion 134A and the connector portion 38 is the second reinforcing portion. This is because the adjustment is made to be equal to the rigidity of 134B. That is, the rigidity of the plurality of regions between the plurality of fastening portions 33 in the pedestal portion 32 is substantially equal to each other.

[2-2. Effect etc.]
In the speaker unit according to the present embodiment, the plurality of reinforcing portions 134 are further erected on the pedestal portion 32 outside the first support portion 31 and are arranged to face the first support portion 31. 134a. The plurality of plate portions 134b are disposed between the first support portion 31 and the wall portion 134a, and are fixed to the wall portion 134a in a posture that intersects the wall portion 134a.

  According to this, the plurality of reinforcing portions 134 includes a wall portion 134a disposed to face the first support portion 31, and a plurality of plates disposed between the first support portion 31 and the wall portion 134a. A hollow structure is constituted by the portion 134b. For this reason, the strength of the base portion 32 of the frame 130 can be sufficiently secured.

  In the present embodiment, the plurality of reinforcing portions 134 have a shape along the axial direction (that is, the Z-axis direction) of the first support portion 31.

  For this reason, for example, when the frame 130 is resin-molded, a mold having a shape substantially parallel to the axial direction (Z-axis direction) of the first support portion 31 may be used. It can be easily realized.

(Modification)
[3-1. Modification 1]
In the embodiment described above, the plurality of reinforcing portions 34 and 134 have a curved shape that is convex on the Z axis direction minus side when viewed from the outside of the first support portion 31 on the Z axis direction plus side. However, it is not limited to this. For example, on the positive side in the Z-axis direction, a reinforcing part having a valley shape that is convex on the negative side in the Z-axis direction when viewed from the outside of the first support part 31 may be employed. Here, the valley-shaped shape is a shape in which two planes intersect so as to protrude toward the negative side in the Z-axis direction.

[3-2. Modification 2]
In the above-described embodiment, the plurality of reinforcing portions 34 are such that the first heights H11 and H21 from the pedestal portion 32 at both ends of the reinforcing portion 34 are between the plurality of fastening portions 33 of the reinforcing portion 34. Although it is assumed that the structure has a structure higher than the second heights H12 and H21 from the pedestal 32 in the part, the present invention is not limited to this. That is, if it is the reinforcement part of the structure which has the 1st part whose height from the base part 32 is 1st height, and the 2nd part whose 2nd height is lower than 1st height, It is not restricted to said structure.

  For example, the reinforcing portion may be configured such that the height of the central portion of the reinforcing portion is higher than both ends, and has a curved shape that is convex on the positive side in the Z-axis direction, or convex on the positive side in the Z-axis direction. The structure which has a mountain shape may be sufficient. In addition, the mountain shape that is convex on the positive side in the Z-axis direction is a shape in which two planes intersect so that they are convex on the positive side in the Z-axis direction.

[3-3. Modification 3]
In the above-described embodiment, the first heights H11 and H21 at both ends of the plurality of reinforcing portions 34 are the maximum heights of the plurality of reinforcing portions 34 from the pedestal portion 32. However, it is not limited to this. That is, the height at both ends of the plurality of reinforcing portions 34 may not be the maximum height, the height at the position shifted from both ends may be the maximum height, or the height at the center is the maximum. It is good also as a structure which is height.

  In addition, the second heights H12 and H22 at the center of the plurality of reinforcing portions 34 are the minimum heights of the plurality of reinforcing portions 34 from the pedestal portion 32, but are not limited thereto. That is, the height at the center of the plurality of reinforcing portions 34 may not be the minimum height, the height at the position shifted from the center may be the minimum height, or the height at both ends may be the minimum. It is good also as a structure which is height.

[3-4. Modification 4]
Moreover, in the said embodiment, although it is the structure by which the reinforcement part 34 is formed over each of the some area | region between the some fastening parts 33, a reinforcement part covers the whole width | variety of the said area | region. It may not be formed. For example, the structure which is not being fixed to the fastening part may be sufficient as the both ends of a reinforcement part.

(Embodiment 3)
Next, an example of an electronic device using the speaker unit 100 will be described with reference to FIG. FIG. 16 is an external view of an audio mini-component system that is an electronic apparatus according to the third embodiment.

  A speaker system is configured by incorporating the speaker unit 100 into the enclosure 201. The mini component system 200 includes the speaker system, an amplifier 202 that is an amplification unit of an electric signal input to the speaker unit 100, and a player 203 that outputs a source input to the amplifier 202. That is, the mini component system 200 includes a speaker unit 100 and an amplifier 202 that is a circuit unit that inputs an electric signal to the speaker unit 100.

  With this configuration, it is possible to realize an electronic device that can contribute to the global environment by reducing the weight and saving resources.

  Furthermore, since the strength of the frame can be ensured for deformation and mounting distortion at the time of mounting, it is possible to greatly reduce it, and to realize an electronic device that can realize low price, high quality, and high reliability. it can. Therefore, it is possible to exert a great effect that the electronic device can be reduced in weight, resource saving, price reduction, high quality, and high reliability.

(Embodiment 4)
Next, an example of a mobile device using the speaker unit 100 will be described with reference to FIG. FIG. 17 is a cross-sectional view of an automobile that is a mobile device according to the fourth embodiment.

  An automobile 300 is configured by incorporating the speaker unit 100 into a rear tray or a front panel and using it as a part of car navigation or car audio. Car navigation and car audio constitute a circuit unit 301 for inputting an electric signal to a speaker. That is, the automobile 300 as a mobile device includes a speaker unit 100, a circuit unit 301 that inputs an electric signal to the speaker unit 100, and a self-running main body 302 that includes the speaker unit 100 and the circuit unit 301. Have.

  The mounting position of the speaker unit 100 to the automobile 300 is not limited to the rear tray or the front panel, and may be any position such as a door, a ceiling, a pillar portion, an instrument panel portion, or a floor.

  By adopting this configuration, it is possible to realize a mobile device that can contribute to the global environment by reducing the fuel consumption of the mobile device by reducing weight and resources. Furthermore, since the strength of the frame can be ensured for deformation and mounting distortion during mounting, a mobile device that can be greatly reduced and that can realize low price, high quality, and high reliability is realized. Can do. Therefore, it is possible to exert a great effect that the mobile device can be reduced in weight, resource saving, cost reduction, high quality, and high reliability.

(Other embodiments)
In the above embodiment, the first connection portion 37a is provided with a gap between the first support portion 31 and the contact surface 35 that is the end on the plus side in the Z-axis direction. Not exclusively. For example, the connection portion may be connected to the first support portion 31 in a state where no gap is provided between the contact surface 35 and the contact portion 35. That is, the connection part 37 may be connected to the inner peripheral surface of the first support part 31 over the entire width in the Z-axis direction. In this case, it is preferable that the diaphragm 21 has an up-roll shape. This is because, when the connecting portion is connected over the entire width of the first support portion 31 in the Z-axis direction, the portion of the up roll shape of the diaphragm 21 may interfere with the connecting portion.

  On the contrary, when a gap is provided between the connecting portion and the contact surface 35 as in the present embodiment, the diaphragm may have a down roll shape. That is, since the gap is provided, even if the diaphragm has the shape of a down roll, the diaphragm does not interfere with the connection portion.

  The speaker unit according to one or more aspects of the present invention has been described above based on the embodiment, but the present invention is not limited to this embodiment. Unless it deviates from the gist of the present invention, one or more of the present invention may be applied to various modifications that can be conceived by those skilled in the art, or forms constructed by combining components in different embodiments. It may be included within the scope of the embodiments.

  The present disclosure is useful as a speaker unit that can realize sufficient weight reduction.

DESCRIPTION OF SYMBOLS 10 1st elastic member 21 Diaphragm 22 Magnetic circuit 30, 130 Frame 31 1st support part 32 Base part 33 Fastening part 33A 1st fastening part 33B 2nd fastening part 33a Through-hole 33b Protrusion part 34,134 Reinforcement Part 34A first reinforcing part 34B second reinforcing part 34a curved plate part 34b plate part 35 abutting surface 36 second support part 37 connecting part 37a first connecting part 37b second connecting part 37c first part 37d second Part 38 Connector portion 40 Second elastic member 51 First rib 52 Second rib 53 Third rib 54 Fourth rib 100 Speaker unit 110 External housing 111 Opening portion 112 Through hole 134A First reinforcement portion 134B Second reinforcement Part 134a wall part 134b plate part 200 minicomponent system 201 enclosure 202 amplifier 203 player 300 automobile 3 01 Circuit body 302

Claims (11)

A speaker unit comprising a frame to which a diaphragm and a magnetic circuit are coupled,
The frame is
A first support portion that supports the outer periphery of the diaphragm and has a cylindrical shape surrounding the outer periphery;
A second support part disposed inside the first support part and supporting the magnetic circuit;
A plurality of connection portions connecting the first support portion and the second support portion;
The connecting portion is
The width of the speaker unit in the sound emission direction increases as it goes from the second support part to the first support part.
The first width in the discharge direction at the first connection portion connected to the first support portion is larger than the second width in the discharge direction at the second connection portion connected to the second support portion. Large speaker unit. The speaker unit according to claim 1, wherein a gap is provided between the first connection portion and a front end portion of the first support portion. The connecting portion is
It is a part formed along the radial direction of the diaphragm,
A first rib that is erected from the first portion on the front side of the connecting portion toward one side in the circumferential direction of the diaphragm, and extends along the radial direction;
The speaker according to claim 1, further comprising: a second rib that is erected from the second part behind the first part toward the other side in the circumferential direction and extends along the radial direction. unit. The speaker unit according to claim 3, wherein the connection portion further includes a third rib that is erected from the first rib toward the rear side and extends along the radial direction. 5. The speaker unit according to claim 3, wherein the connection portion further includes a fourth rib that is erected from the second rib toward the rear side and extends along the radial direction. The speaker unit according to any one of claims 3 to 5, wherein the connection portion has a shape in which the first rib and the second rib are extended in the second connection portion. The speaker unit according to any one of claims 3 to 6, wherein the first rib and the second rib are connected to the first support portion. The speaker unit according to any one of claims 1 to 5, wherein the connection portion has a concave shape in which a rear side is recessed toward the front side. The frame is
A support portion for supporting the outer periphery of the diaphragm;
A pedestal that extends outward from the outer periphery of the support,
A plurality of fastening portions provided at a plurality of positions surrounding the outer periphery of the support portion in the pedestal portion;
In the pedestal portion, disposed in a plurality of regions between the plurality of fastening portions, the support portion, and a plurality of reinforcing portions fixed to the pedestal portion,
The plurality of reinforcing portions include a first portion having a first height from the pedestal portion and a second portion having a second height lower than the first height. The speaker unit according to any one of 1 to 8. A speaker unit according to claim 1;
An electronic device comprising: a circuit unit that inputs an electric signal to the speaker unit. A speaker unit according to claim 1;
A circuit unit for inputting an electric signal to the speaker unit;
A mobile device comprising: a self-propelled main body on which the speaker unit and the circuit unit are mounted.

Images