Loudspeaker unit mount

Abstract

And the sound quality of the loudspeaker unit is improved. The speaker unit mounting tool includes: a first member on which the speaker unit is mounted; a second member for mounting to an object to be mounted; and at least one connecting member that connects the first member and the second member in a state in which a gap is formed between the first member and the second member.

Description

Technical Field

[0001] The invention relates to a speaker unit mounting component. Background Art

[0002] In Patent Document 1, the speaker unit is mounted on the door panel of the vehicle via a bulkhead. The bulkhead is a plate made of aluminum die casting, magnesium alloy die casting, or vibration-absorbing silicone resin, and absorbs or attenuates unnecessary vibration of the door panel.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2005-26817 Summary of the invention

[0004] The bulkhead described in Patent Document 1 is composed of only a single plate material and therefore cannot sufficiently absorb or attenuate unnecessary vibration of the door panel.

[0005] In view of the above circumstances, an object of one embodiment of the present invention is to provide a speaker unit mounting member capable of improving sound quality.

[0006] In order to solve the above problems, a preferred embodiment of the present invention involves a speaker unit mounting member comprising: a first component for mounting a speaker unit; a second component for mounting on an object to be mounted; and at least one connecting component for connecting the first component and the second component in a state where a gap is formed between the first component and the second component. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a cross-sectional view showing a usage state of the speaker unit mounting tool according to the first embodiment.

[0008] Figure 2 It is a perspective view of the speaker unit mounting tool according to the first embodiment.

[0009] Figure 3 It is a figure for demonstrating the 1st part and the 2nd part of a some connection member in 1st embodiment.

[0010] Figure 4 It is a perspective view of a speaker unit mounting tool according to a second embodiment.

[0011] Figure 5 It is a figure for demonstrating the 1st part and the 2nd part of a some connection member in 2nd embodiment.

[0012] Figure 6 This is a diagram for explaining a change in the distance between the first portion and the second portion of a plurality of connecting members in the second embodiment.

[0013] Figure 7 It is an exploded perspective view showing an example of a vehicle door. DETAILED DESCRIPTION

[0014] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the dimensions and scales of the various parts in the accompanying drawings are appropriately different from the actual dimensions and scales. In addition, the embodiments described below are preferred specific examples of the present invention. Therefore, in this embodiment, various technically preferred limitations are attached. However, the scope of the present invention is not limited to these modes as long as there is no particular description of limiting the present invention in the following description.

[0015] 1. Speaker unit mounting parts

[0016] 1-1. First Embodiment

[0017] Figure 1 : is a cross-sectional view showing the usage state of the speaker unit mounting member 20 involved in the first embodiment. In addition, hereinafter, the central axis of the speaker unit 10 is the axis line AX, a direction from the back side toward the front side of the speaker unit 10 along the axis line AX is the X1 direction, and a direction from the front side toward the back side of the speaker unit 10 opposite to the X1 direction is the X2 direction. In addition, hereinafter, sometimes the X1 direction and the X2 direction are not distinguished and are referred to as the axial direction. In addition, sometimes a direction along a virtual circle with the axis line AX as the center or the opposite direction thereof is referred to as the circumferential direction. Furthermore, sometimes a direction orthogonal to the axis line AX and away from the axis line AX or the opposite direction thereof is referred to as a radial direction. In addition, hereinafter, sometimes the situation of observing along the direction of the axis line AX is referred to as a top view.

[0018] The speaker unit mounting member 20 is a structure also called an inner baffle for mounting the speaker unit 10 on the mounting object 200, and has a function of reducing the transmission of vibration from the speaker unit 10 to the mounting object 200. This function can improve the sound quality of the speaker unit 10.

[0019] The mounting object 200 is, for example, an inner panel of a vehicle door. Figure 1 In the example shown, the mounting object 200 has an opening 210, and the speaker unit 10 is arranged to cover the opening 210. In addition, the mounting object 200 is not limited to the inner panel of the vehicle door, and may be, for example, a panel other than the inner panel of the vehicle door, or a panel other than the vehicle door. Figure 7 Provide explanation.

[0020] The speaker unit 10 is a dynamic driver that converts an electric sound signal from an external device such as an amplifier (not shown) into sound. The speaker unit 10 includes a diaphragm 11 , a voice coil 12 , a magnetic circuit 13 , a frame 14 , a damper 15 , and a rim 16 .

[0021] The vibration plate 11 is a vibrating body composed of a sheet material, and emits sound by vibration. The sheet material constituting the vibration plate 11 is obtained, for example, by hardening or solidifying a resin material in a state where the resin material is impregnated in a fiber substrate. Examples of the resin material include polyester resin, acrylic resin, polyurethane, melamine resin, modified rubber resin, and phenolic resin. Examples of the fiber substrate include carbon fiber, aramid fiber, glass fiber, ceramic fiber, silica fiber, metal fiber, potassium titanate fiber, zirconium oxide fiber, polyacrylate fiber, polyphenylene sulfide fiber, vinylon fiber, rayon fiber, nylon fiber, polyester fiber, acrylic fiber, polypropylene fiber, polyethylene fiber, cotton fiber, hemp fiber, and cellulose fiber. A coating composed of a metal such as aluminum or an inorganic material such as DLC (Diamond-like Carbon) may also be provided on the surface of the sheet material.

[0022] The diaphragm 11 has a surface facing the X1 direction and a surface facing the X2 direction, and vibrates in the direction along the axis AX. The surface of the diaphragm 11 facing the X1 direction is a sound emitting surface. Figure 1 In the example shown, the vibration plate 11 is a cone shape. Figure 1 The example shown may also be a dome type, for example.

[0023] The voice coil 12 is fixed to the surface of the vibration plate 11 facing the X2 direction, and generates a magnetic field by inputting an electrical sound signal. The voice coil 12 has a bobbin 12a and a coil 12b. The bobbin 12a is in the shape of a tube with the axis AX as the center axis. One end of the bobbin 12a in the X1 direction is bonded to the surface of the vibration plate 11 facing the X2 direction by an adhesive or the like. The coil 12b is composed of a conductive wire wound circumferentially along the outer circumference of the bobbin 12a. The sound signal is input to the coil 12b. Therefore, a magnetic field corresponding to the sound signal is generated from the voice coil 12.

[0024] The magnetic circuit 13 is a structure that generates a magnetic field, and the magnetic field acts on the magnetic field from the voice coil 12. The magnetic circuit 13 includes a permanent magnet 13a and a yoke 13b. The permanent magnet 13a is a ferrite magnet or a neodymium magnet, etc., with the axis AX as the center axis. The yoke 13b is made of a soft magnetic material and guides the magnetic flux from the permanent magnet 13a to the voice coil 12. Therefore, the magnetic field from the voice coil 12 generated by the sound signal acts on the magnetic field from the magnetic circuit 13, and the vibration plate 11 vibrates corresponding to the sound signal.

[0025] The frame 14 is a structure for supporting the vibration plate 11 and the magnetic circuit 13. The frame 14 is made of, for example, a metal material or a resin material. The magnetic circuit 13 is fixed to the frame 14. The voice coil 12 is connected to the frame 14 via the damper 15, and the vibration plate 11 is connected to the frame 14 via the edge 16.

[0026] exist Figure 1 In the example shown, the frame 14 is roughly in the shape of the side surface of a truncated cone extending toward the X1 direction with the axis AX as the center. In addition, a flange 14a protruding toward the radial outside is provided at the end of the frame 14 in the X1 direction. The edge 16 is joined to the surface of the flange 14a facing the X1 direction by an adhesive or the like. On the other hand, the first component 21 is joined to the surface of the flange 14a facing the X2 direction by screw fastening or the like. In addition, a back plate 14b is provided at the end of the frame 14 in the X2 direction with the direction along the axis AX as the plate thickness direction. The magnetic circuit 13 is joined to the surface of the back plate 14b facing the X2 direction by an adhesive or the like.

[0027] Although not shown, multiple holes penetrating in the radial direction are provided at intervals in the circumferential direction in the frame 14. Through the multiple holes, the space between the vibration plate 11 and the frame 14 is connected to the space S2 closer to the X2 direction than the frame 14. Therefore, the influence of the air spring in the space on the vibration plate 11 can be reduced.

[0028] In addition, the shape of the frame 14 is not limited to Figure 1 The examples shown are arbitrary. Figure 1 In the example shown, the frame 14 is composed of one member, but the present invention is not limited thereto, and the frame 14 may be composed of a plurality of members joined to each other by bonding or the like.

[0029] The damper 15 is a flexible sheet that allows the vibration of the vibration plate 11 and supports the voice coil 12 relative to the frame 14. The sheet is formed into a concentric circular waveform, for example, and is made of the same material as the vibration plate 11 described above. The damper 15 is annular when viewed in the direction of the axis AX. The inner periphery of the damper 15 is bonded to the voice coil 12 by an adhesive or the like. The outer periphery of the damper 15 is bonded to the frame 14 by an adhesive or the like. In addition, the damper 15 can be provided as needed or can be omitted.

[0030] The edge 16 is a flexible film-like or sheet-like member that connects the outer periphery of the vibration plate 11 to the frame 14 and is also called a surround. Here, the edge 16 seals the gap between the vibration plate 11 and the frame 14. The edge 16 is made of a rubber material such as an elastomer.

[0031] Although not shown, edge 16 is annular when viewed from the direction along axis AX. Edge 16 has an inner portion fixed to vibration plate 11, an outer portion fixed to frame 14, and a connecting portion connecting the inner and outer portions to allow vibration of vibration plate 11.

[0032] The speaker unit mounting member 20 is interposed between the above speaker unit 10 and the mounting object 200 .

[0033] like Figure 1 As shown, the speaker unit mounting member 20 includes a first member 21 , a second member 22 , a plurality of connecting members 23 , a sealing member 24 , and a spacer 25 .

[0034] The first member 21 is a member for mounting the speaker unit 10. The first member 21 is a substantially rigid body, and is made of, for example, a metal material or a resin material.

[0035] exist Figure 1 In the example shown, the first component 21 is an annular component having an opening 21a. The first component 21 is arranged along the flange 14a of the speaker unit 10 over the entire circumference in a state where a portion of the speaker unit 10 is arranged in the opening 21a. The flange 14a is fixed to the surface of the first component 21 facing the X1 direction by screw fastening or the like. The shape of the first component 21 is not limited to Figure 1 The examples shown are arbitrary. In addition, the first member 21 may be composed of a plurality of members divided into units of one or more connecting members 23 .

[0036] In the present embodiment, the center of gravity G of the speaker unit 10 is located near the magnetic circuit 13. When the speaker unit 10 is mounted on the first component 21, the center of gravity G is located at a position separated from the first component 21 in the X2 direction. The position of the center of gravity G varies depending on the structure of the speaker unit 10 and is not limited to Figure 1 The positions shown are arbitrary.

[0037] On the other hand, the second component 22 is a component for being mounted on the mounting object 200. The second component 22 is a substantially rigid body, and is made of, for example, a metal material or a resin material. In addition, the material constituting the second component 22 may be the same as or different from the material constituting the first component 21.

[0038] exist Figure 1In the example shown, the second component 22 is an annular component having an opening 22a. The second component 22 is arranged at a position in the X2 direction relative to the first component 21, and a portion of the speaker unit 10 mounted on the first component 21 is arranged in the opening 22a. The surface of the second component 22 facing the X2 direction is fixed to the mounting object 200 by screw fastening or the like. In addition, the shape of the second component 22 is not limited to Figure 1 The examples shown are arbitrary. In addition, the second component 22 may be composed of a plurality of components divided into units of one or more connecting components 23. The shape or size of the second component 22 may be the same as that of the first component 21, or may be different.

[0039] A plurality of connection members 23 are provided between the first member 21 and the second member 22 .

[0040] The plurality of connecting members 23 are members that connect the first member 21 and the second member 22 in a state where a gap g is formed between the first member 21 and the second member 22. By using such a plurality of connecting members 23, the vibration transmission from the first member 21 to the second member 22 is reduced. Thus, by reducing the vibration transmission from the speaker unit 10 to the installation object 200, the sound quality can be improved.

[0041] Each connecting member 23 has elasticity. Thus, it is preferable to reduce the vibration transmission from the first member 21 to the second member 22. Figure 1 In the example shown, the plurality of connection members 23 are leaf springs, for example, made of metal materials such as spring steel. In addition, the constituent material of the plurality of connection members 23 is not limited to metal materials, and may be, for example, resin materials or fiber reinforced composite materials.

[0042] Figure 2 FIG. 2 is a perspective view of a speaker unit mounting member 20 according to the first embodiment. Figure 2 In the figure, for convenience of explanation, the sealing member 24 is omitted and the second member 22 is indicated by a two-dot chain line.

[0043] like Figure 2 As shown, a plurality of connecting members 23 are arranged at intervals from each other in the circumferential direction. Figure 2 In the example shown, four connection members 23 are arranged at equal intervals in the circumferential direction. Figure 2 The examples shown are arbitrary.

[0044] Each of the plurality of connection members 23 includes a first portion 23 a , a second portion 23 b , and a spring portion 23 c .

[0045] The first portion 23a is a part of the connection member 23 and is a plate-shaped portion fixed to the first member 21 by screw fastening or the like. In the present embodiment, as described later, a part of the first portion 23a among the plurality of first portions 23a is fixed to the first member 21 by screw fastening or the like via a spacer 25. The second portion 23b is a part of the connection member 23 and is a plate-shaped portion fixed to the second member 22 by screw fastening or the like at a position separated from the first portion 23a. The spring portion 23c is a part of the connection member 23 and is a plate-shaped portion connecting the first portion 23a and the second portion 23b.

[0046] exist Figure 2 In the example shown, the spring portion 23c is in the shape of a strip extending in the circumferential direction. One end of the two ends in the length direction of the spring portion 23c is connected to the first part 23a, and the other end is connected to the second part 23b. In this embodiment, the first part 23a and the second part 23b are connected to be inclined relative to the spring portion 23c. Here, the first part 23a and the second part 23b are configured to be along two planes parallel to each other in a natural state without applying external force. Thus, the first part 21 and the second part 22 are connected by a plurality of connecting parts 23 in a manner that allows elastic deformation in the thickness direction of the spring portion 23c and is parallel to each other.

[0047] As described above, by fixing the plurality of connection members 23 to the first member 21 and the second member 22, the first member 21 can move relative to the second member 22 in the direction along the axis AX in conjunction with the flexural deformation of the plurality of connection members 23 in the thickness direction. This can reduce the thickness of the speaker unit mounting member 20 and reduce the transmission of vibration from the speaker unit 10 to the mounting object 200.

[0048] Here, as mentioned above, the plurality of connection components 23 are leaf springs whose thickness direction is the direction along the axis AX. Therefore, the plurality of connection components 23 are more likely to deform in the direction along the axis AX than in the radial direction. Therefore, compared with a method in which the plurality of connection components 23 are coil springs or rubber, the frame 14 can be stably supported relative to the second component 22, and the vibration transmission from the speaker unit 10 to the installation object 200 can be reduced by the elasticity of the plurality of connection components 23. In addition, compared with a method in which the plurality of connection components 23 are coil springs or rubber, the installation space of the plurality of connection components 23 can be smaller, so that the speaker unit mounting part 20 can be miniaturized. Furthermore, it is possible to easily design the plurality of connection components 23 with a desired spring constant, so there is also an advantage in that the manufacturing cost of the speaker unit mounting part 20 can be easily reduced.

[0049] The resonance frequency fc based on the spring constant k1 which is the combined spring constant of the plurality of connection members 23 and the mass m of the speaker unit 10 is expressed by the following equation (1). The mass m may be the sum of the mass of the speaker unit 10 and the mass of the plurality of connection members 23 .

[0050]

Formula 1

[0051]

[0052] Here, the resonance frequency fc is lower than the output sound band of the speaker unit 10. Therefore, the vibration transmitted from the speaker unit 10 to the second component 22 is appropriately reduced. In addition, the resonance frequency fc is lower than the lowest resonance frequency f0 of the speaker unit 10. The lowest resonance frequency f0 is equivalent to the lower limit value of the output sound band of the speaker unit 10, for example, 30 Hz or more and 60 Hz or less. As described above, the resonance frequency fc is lower than the lowest resonance frequency f0, thereby appropriately reducing the vibration transmitted from the speaker unit 10 to the second component 22.

[0053] The first member 21 and the second member 22 connected to each other by the plurality of connection members 23 face each other with a gap g interposed therebetween. The gap g is sealed by a sealing member 24 to prevent the back space S2 and the front space S1 from communicating with each other through the gap g.

[0054] The sealing member 24 is a film-like or sheet-like member that seals the first member 21 and the second member 22 around the entire perimeter of the speaker unit 10. By using such a sealing member 24, unnecessary resonance caused by sound that flows from the back of the speaker unit 10 to the front is reduced, thereby improving the sound quality. The sealing member 24 is made of, for example, a rubber material. In addition, the material constituting the sealing member 24 is not limited to a rubber material, and may be, for example, a resin material, etc. In addition, the sealing member 24 is provided as required and may be omitted.

[0055] The sealing member 24 has a portion fixed to the first member 21, a portion fixed to the second member 22, and a flexible portion connecting them. Here, the sealing member 24 is provided along the entire periphery of the annular first member 21 and the tubular second member 22. Thus, not only is the sound from the back side of the speaker unit 10 reduced from entering the front side, but also the intrusion of water etc. into the space between the first member 21 and the second member 22 can be prevented.

[0056] In addition, the first component 21 and the second component 22 are preferably arranged parallel to each other. As described above, when the speaker unit 10 is mounted on the first component 21, the center of gravity G is at a position separated from the first component 21 in the X2 direction. Therefore, when the speaker unit 10 is mounted on the first component 21, a moment acts on the first component 21 so that the first component 21 is tilted relative to the second component 22. More specifically, when the speaker unit 10 is mounted on the first component 21, a moment acts on the first component 21 in such a manner that the upper portion of the gap g between the first component 21 and the second component 22 in the vertical direction DU becomes smaller and the lower portion becomes larger.

[0057] Therefore, in order to reduce the inclination of the first member 21 with respect to the second member 22 , the spacer 25 is disposed between the first portion 23 a and the first member 21 for some of the connection members 23 among the plurality of connection members 23 .

[0058] Figure 3 1 is a diagram for explaining the first portion 23a and the second portion 23b of the plurality of connecting members 23 in the first embodiment. Figure 3 As shown, the first portions 23a and the second portions 23b of the plurality of connection members 23 are arranged at intervals from each other in the circumferential direction so that the first portions 23a and the second portions 23b are alternately arranged.

[0059] The spacer 25 is a member disposed between the connecting member 23 and the first member 21. The spacer 25 is a substantially rigid body, and is made of, for example, a metal material or a resin material. The material constituting the spacer 25 may be the same as or different from the material constituting the first member 21.

[0060] More specifically, the spacer 25 is disposed between the first portion 23a located at the uppermost position in the vertical direction DU among the plurality of first portions 23a and the first member 21. Thus, the inclination of the first member 21 with respect to the second member 22 can be reduced.

[0061] As described above, the spacer 25 is arranged at a position above the first component 21 or the second component 22 in the vertical direction DU in a state where the second component 22 is mounted on the mounting object 200. Thus, the posture of the first component 21 relative to the second component 22 can be appropriately adjusted according to the mass or the center of gravity position of the speaker unit 10. In addition, the arrangement and number of the spacers 25 are not limited to the example shown in the figure, but are arbitrary and can be appropriately changed. For example, when the position of the center of gravity G is located in the X1 direction relative to the first component 21, the spacer 25 is arranged at a position below the first component 21 or the second component 22 in the vertical direction DU in a state where the second component 22 is mounted on the mounting object 200.

[0062] It is preferred that the spacer 25 includes an adjustment mechanism for adjusting the distance between the connecting member 23 and the first member 21. In this case, the posture of the first member 21 relative to the second member 22 can be adjusted according to the mass or the center of gravity of the speaker unit 10. The adjustment mechanism is not particularly limited, and for example, a mechanism is provided in which the spacer 25 is screw-fastened to the first member 21 using a screw that can adjust the distance according to the amount of rotation. In addition, when the spacer 25 is arranged between the connecting member 23 and the second member 22, the adjustment mechanism adjusts the distance between the connecting member 23 and the second member 22. In addition, the spacer 25 can be configured to be replaceable with a spacer having a different thickness.

[0063] As described above, by arranging the spacer 25 between the connecting member 23 and the first member 21, the posture of the first member 21 relative to the second member 22 can be adjusted. In addition, the spacer 25 can be arranged between the second portion 23b located at the top in the vertical direction DU among the plurality of second portions 23b and the second member 22. In this case, the spacer 25 arranged between the first portion 23a and the first member 21 can be omitted. In addition, the spacer 25 is provided as needed and can be omitted. In addition, at least a portion of the spacer 25 can be formed integrally with the first member 21.

[0064] According to the first embodiment described above, the connecting member 23 connects the first member 21 and the second member 22 with the gap g formed therebetween. Therefore, the sound quality can be improved by reducing the vibration transmission from the speaker unit 10 to the installation object 200.

[0065] 1-2. Second Embodiment

[0066] In the following exemplary embodiments, elements having the same functions and effects as those of the first embodiment are denoted by the same reference numerals as those used in the description of the first embodiment, and detailed descriptions thereof are omitted as appropriate.

[0067] Figure 4 2 is a perspective view of a speaker unit mounting member 20A according to the second embodiment. Figure 4 In FIG. 1 , for convenience of explanation, the sealing member 24 is omitted from illustration, and the second member 22 is indicated by a two-dot chain line.

[0068] The speaker unit mounting tool 20 has the same configuration as the speaker unit mounting tool 20 of the first embodiment except that it includes a plurality of connecting members 23A instead of the plurality of connecting members 23 of the first embodiment and a plurality of spacers 25A and a plurality of spacers 26 instead of the spacers 25 of the first embodiment.

[0069] Each of the plurality of connection members 23A has a shape along a plane, and is otherwise configured in the same manner as the connection member 23 of the first embodiment. That is, each of the plurality of connection members 23A has a first portion 23a, a second portion 23b, and a spring portion 23c, which are arranged along the same plane in a natural state without external force.

[0070] A plurality of spacers 25A are provided corresponding to a plurality of connecting members 23A. Each of the plurality of spacers 25A is a member disposed between the corresponding connecting member 23A and the first member 21. Specifically, each spacer 25A is disposed between the first portion 23a of the corresponding connecting member 23A and the first member 21. The spacer 25A is a substantial rigid body, for example, made of a metal material or a resin material. In addition, the material constituting the spacer 25A may be the same as or different from the material constituting the first member 21.

[0071] By using the plurality of spacers 25A as described above, even if each connection member 23A has a shape conforming to a plane, deformation of the spring portion 23 c in the direction toward the first member 21 is permitted.

[0072] Similarly, a plurality of spacers 26 are provided corresponding to a plurality of connecting members 23A. However, each of the plurality of spacers 26 is a member disposed between the corresponding connecting member 23A and the second member 22. Specifically, each spacer 26 is disposed between the second portion 23b of the corresponding connecting member 23A and the second member 22. The spacer 26 is a substantial rigid body, for example, made of a metal material or a resin material. In addition, the material constituting the spacer 26 may be the same as or different from the material constituting the second member 22.

[0073] By using the plurality of spacers 26 as described above, even if each connection member 23A has a shape conforming to a plane, deformation of the spring portion 23 c in the direction toward the second member 22 is permitted.

[0074] Figure 5 2 is a diagram for explaining the first portion 23a and the second portion 23b of the plurality of connecting members 23A in the second embodiment. Figure 5 In the figure, the first portion 23a and the spacer 25A are represented by a grid for easy viewing.

[0075] The first portion 23 a of each connection member 23A is a portion fixed to the first member 21 via the spacer 25A. The second portion 23 b of each connection member 23A is a portion fixed to the second member 22 via the spacer 26 .

[0076] In this embodiment, the fixing position of the spacer 25A relative to the first component 21 is changeable in the circumferential direction. For example, a plurality of screw holes or the like are provided in the first component 21 so that the fixing position of the spacer 25A relative to the first component 21 can be changed in the circumferential direction. Thus, the distance L between the first portion 23a and the second portion 23b can be changed.

[0077] As described above, the distance L between the first part 23a and the second part 23b is changeable. As a result, the spring constant k1, which is the combined spring constant of the plurality of connecting members 23, is changeable, and thus the aforementioned resonance frequency fc can be adjusted. In addition, the posture of the first member 21 relative to the second member 22 can be adjusted according to the mass or center of gravity of the speaker unit 10, etc.

[0078] The spacer 25A moves on the first component 21 along the circumferential direction, and the circumferential position of the first portion 23a changes according to the circumferential movement of the spacer 25A. As a result, the distance L between the first portion 23a and the second portion 23b changes. As a result, the spring constant of the spring portion 23c changes along with the change in the length of the spring portion 23c. Therefore, the spring constant k1 changes, and the resonance frequency fc can be adjusted.

[0079] Figure 6 2 is a diagram for explaining a change in the distance L between the first portion 23a and the second portion 23b of the plurality of connection members 23A in the second embodiment. Figure 6 In, with Figure 5 Compared with the state shown in FIG. , the state after the distance L is shortened is shown. Figure 6 In the figure, the first portion 23a and the spacer 25A are represented by a grid for easy viewing.

[0080] Here, the distance L between the plurality of connection members 23A may be the same or appropriately different from each other from the viewpoint of adjusting the resonance frequency fc, thereby appropriately adjusting the posture of the first member 21 relative to the second member 22 .

[0081] Specifically, as described above, when the center of gravity G of the speaker unit 10 is located in the X2 direction relative to the first member 21, Figure 5 The distance L between the two connecting members 23A located above the vertical direction DU among the four connecting members 23A shown is shorter than the distance L between the two connecting members 23A located below the vertical direction DU, so that the inclination of the first member 21 with respect to the second member 22 can be reduced. In addition, when the center of gravity G of the speaker unit 10 is located in the X1 direction relative to the first member 21, Figure 5Among the four connecting members 23A shown, the distance L between the two connecting members 23A located below in the vertical direction DU may be shorter than the distance L between the two connecting members 23A located above in the vertical direction DU.

[0082] According to the second embodiment described above, the connecting member 23A connects the first member 21 and the second member 22 with the gap g formed therebetween. Therefore, the sound quality can be improved by reducing the vibration transmission from the speaker unit 10 to the installation object 200.

[0083] 2. Installation object

[0084] Figure 7 FIG. 1 is an exploded perspective view showing an example of a vehicle door 100. Figure 7 As shown, the vehicle door 100 includes an outer panel 110, a door trim 120, an inner panel 130, a speaker unit 10, a speaker unit mounting member 20, and a pad 170. The inner panel 130 corresponds to the aforementioned mounting object 200. In addition, the vehicle door 100 may include a speaker unit mounting member 20A instead of the speaker unit mounting member 20.

[0085] The outer panel 110, the inner panel 130, and the door trim 120 are arranged in sequence in the X1 direction. As described above, the outer panel 110 faces the outside of the vehicle, and the door trim 120 is arranged on the vehicle interior side, and the inner panel 130 is arranged between the outer panel 110 and the door trim 120. Figure 7 In the example shown, a frame 150 for the window glass 140 that can move up and down is provided integrally with the outer panel 110 and the inner panel 130. In addition, the frame 150 may be omitted.

[0086] The outer panel 110 and the inner panel 130 are each made of, for example, a steel plate. The outer peripheries of the outer panel 110 and the inner panel 130 are joined to each other by welding or the like. In addition, the outer panel 110 and the inner panel 130 are not limited to the structure using a steel plate, and may be made of, for example, an aluminum alloy or a carbon fiber composite material.

[0087] A space is provided between the outer panel 110 and the inner panel 130. The space is used as a sound box of the speaker unit 10. Although not shown, a window lift mechanism and a door lock mechanism for lifting and lowering the window glass 140 are arranged in the space.

[0088] The inner panel 130 has an opening 131 and a plurality of openings 132. The opening 131 is a hole equivalent to the aforementioned opening 210 and is blocked by the speaker unit 10. The speaker unit 10 is fixed to the inner panel 130 via the speaker unit mounting member 20 by screw fastening or the like. Each of the plurality of openings 132 is, for example, a hole used in the assembly operation of the aforementioned lifting mechanism and the door locking mechanism. In addition, at least one of the plurality of openings 132 may also be blocked by a sheet member made of a resin material or the like.

[0089] The door trim 120 is, for example, an interior trim made of resin or the like. The door trim 120 has a plurality of holes 121. The plurality of holes 121 are used as a path for emitting the sound from the speaker unit 10 to the space in the vehicle interior. In addition, one hole may be provided in the door trim 120 instead of the plurality of holes 121. In addition, the plurality of holes 121 may be covered by a mesh material such as saran net.

[0090] The door trim 120 is mounted to the inner panel 130 in a detachable manner through a plurality of connecting members 160. Each connecting member 160 is, for example, a rivet or a fastener made of resin. Each connecting member 160 has one end fixed to the door trim 120 and the other end inserted into the hole 133 of the inner panel 130.

[0091] A gasket 170 is disposed between the door trim 120 and the inner panel 130. The gasket 170 is an annular elastic member along the outer periphery of the door trim 120 or the inner panel 130, and seals the gap between the door trim 120 and the inner panel 130 in a state of elastic deformation. The gasket 170 is made of, for example, a rubber material or an elastomer material. In addition, the gasket 170 may also be made of a foamed body with independent cells.

[0092] Although not shown in the figure, a component such as a sponge that can be sealed without hindering the movement of the speaker unit 10 is inserted between the speaker unit 10 and the door trim 120. This prevents the interference of the sounds emitted from both sides of the vibration plate 11. In addition, the speaker unit mounting member 20 may include a component such as a sponge, and the gap between the speaker unit mounting member 20 and the door trim 120 is sealed by being installed so as to push the component relative to the door trim 120. In this case, the speaker unit 10 can be moved freely without contacting the door trim 120, and as a result, the deterioration of the sound quality is further reduced.

[0093] As described above, when the mounting object 200 is a vehicle, the speaker unit mounting member 20 is mounted so as to emit sound toward the vehicle interior with the speaker unit 10 mounted on the first member 21. Thus, the speaker unit mounting member 20 for mounting the speaker unit 10 on the vehicle can be provided.

[0094] 3. Modifications

[0095] The present invention is not limited to the above-described embodiments, and various modifications described below are possible. In addition, the embodiments and modifications can be combined as appropriate.

[0096] 3-1. Modification 1

[0097] In the above-mentioned embodiment, the plurality of connecting members 23 are plate springs, but the present invention is not limited to this embodiment. For example, an elastic member made of an elastic body such as a coil spring or rubber may be used instead of the plurality of connecting members 23. In this case, the shape of the second member 22 may be appropriately changed in accordance with the shape or material of the elastic member.

[0098] The connection member 23 is not limited to an elastic connection member. The connection member 23 can be any connection member as long as it can reduce the vibration transmission from the first member 21 to the second member 22 and can support the first member 21. For example, the first member 21 can be set to a size that falls into the opening 22a of the second member 22, and the first member 21 can be suspended from the second member 22 through a plurality of belt-shaped or linear connection members.

[0099] 3-2. Modification 2

[0100] In the above-mentioned embodiment, the method of using a plurality of connecting parts 23 or a plurality of connecting parts 23A is exemplified, but the present invention is not limited to this method, and the number of connecting parts 23 or connecting parts 23A is arbitrary. For example, at least two first parts 23a among the above-mentioned plurality of first parts 23a can be connected to each other to form an integral body, and at least two second parts 23b among the above-mentioned plurality of second parts 23b can be connected to each other to form an integral body.

[0101] 3-3. Modification 3

[0102] In each of the aforementioned embodiments, the speaker unit 10 is illustrated as a dynamic structure, but is not limited to this. The speaker unit of the present invention can be, for example, a capacitive type (electrostatic type), a ribbon type, an ionic type (discharge type), a magnetic type, a piezoelectric type, or other conversion type.

[0103] 4. Appendix

[0104] According to the above-exemplified embodiments and modifications, for example, the following embodiments can be understood.

[0105] (Appendix 1) A speaker unit mounting member according to a first aspect of the present invention comprises: a first component for mounting a speaker unit; a second component for mounting on a mounting object; and at least one connecting component for connecting the first component and the second component in a state where a gap is formed between the first component and the second component. According to the above aspect, the connecting component connects the first component and the second component in a state where a gap is formed between the first component and the second component, so that the sound quality can be improved by reducing the transmission of vibration from the speaker unit to the mounting object.

[0106] (Appendix 2) In a second aspect which is a preferred example of the first aspect, the at least one connecting member is an elastic member. In the above aspect, the vibration transmission from the first member to the second member can be appropriately reduced.

[0107] (Appendix 3) In a third aspect which is a preferred example of the second aspect, the at least one connecting member is a leaf spring, and the leaf spring has: a first portion fixed to the first member; and a second portion fixed to the second member at a position separated from the first portion. According to the above aspect, the speaker unit mounting member can be made thinner.

[0108] (Appendix 4) In a fourth aspect which is a preferred example of the third aspect, a spacer is further provided, the spacer being arranged between the leaf spring and the first member or the second member. According to the above aspect, the posture of the first member relative to the second member can be adjusted.

[0109] (Appendix 5) In the fifth embodiment which is a preferred example of the fourth embodiment, the spacer includes an adjustment mechanism which adjusts the distance between the leaf spring and the first component or the second component. In the above embodiment, the posture of the first component relative to the second component can be adjusted according to the mass or center of gravity position of the speaker unit.

[0110] (Appendix 6) In the sixth aspect which is a preferred example of the fourth aspect or the fifth aspect, the spacer is arranged at a position above or below the first component or the second component in the vertical direction when the second component is mounted on the mounting object. In the above aspect, the posture of the first component relative to the second component can be appropriately adjusted according to the mass or center of gravity position of the speaker unit.

[0111] (Appendix 7) In the seventh embodiment, which is a preferred example of any of the first to sixth embodiments, the distance between the first part and the second part is changeable. In the above embodiment, the resonant frequency based on the composite spring constant of at least one connecting member and the mass of the speaker unit is variable, so the sound quality can be adjusted according to preference. In addition, the posture of the first part relative to the second part can also be adjusted according to the mass or center of gravity position of the speaker unit.

[0112] (Appendix 8) In the eighth aspect which is a preferred example of any of the first to seventh aspects, there is also a sealing member which seals between the first component and the second component over the entire circumference of the speaker unit. In the above aspects, the sound quality can be improved by reducing unnecessary resonance caused by sound that travels from the back of the speaker unit to the front.

[0113] (Appendix 9) In a ninth aspect as a preferred example of the eighth aspect, the first component and the second component are each annular components, and the sealing component is provided along the entire periphery of the first component and the second component. In the above aspect, not only is the sound from the back side of the speaker unit reduced, but also water and the like can be prevented from intruding between the first component and the second component.

[0114] (Appendix 10) In the tenth aspect which is a preferred example of any of the first to ninth aspects, the installation object is a vehicle, and the speaker unit is installed so as to emit sound toward the interior of the vehicle when installed on the first component. In the above aspects, a speaker unit mounting member for mounting the speaker unit on a vehicle can be provided.

[0115] Description of the label

[0116] 10… speaker unit, 11… diaphragm, 12… voice coil, 12a… bobbin, 12b… coil, 13… magnetic circuit, 13a… permanent magnet, 13b… yoke, 14… frame, 14a… flange, 14b… back plate, 15… damper, 16… edge, 20… speaker unit mounting member, 20A… speaker unit mounting member, 21… first component, 21a… opening, 22… second component, 22a… opening, 23… connecting component, 23A… connecting component, 23a… first part, 23b… second part, 23 c…spring portion, 24…sealing member, 25…spacer, 25A…spacer, 26…spacer, 100…vehicle door, 110…outer panel, 120…door trim, 121…hole, 130…inner panel, 131…opening, 132…opening, 140…window glass, 150…frame, 160…connecting member, 170…gasket, 200…installation object, 210…opening, AX…axis line, DU…vertical direction, G…center of gravity, L…distance, S1…space, S2…space, g…gap.

Claims

1. A speaker unit mounting member, comprising: A first component for mounting a speaker unit; a second component for mounting on a mounting object; and at least one connecting member that connects the first member and the second member in a state where a gap is formed between the first member and the second member.

2. The speaker unit mounting member according to claim 1, wherein: The at least one connecting component is an elastic component.

3. The speaker unit mounting member according to claim 2, wherein: The at least one connecting member is a leaf spring, The leaf spring has: a first portion fixed to the first component; and The second portion is fixed to the second member at a position separated from the first portion.

4. The speaker unit mounting member according to claim 3, wherein: A spacer is further provided, and the spacer is arranged between the leaf spring and the first member or the second member.

5. The speaker unit mounting member according to claim 4, wherein: The spacer includes an adjustment mechanism that adjusts the distance between the leaf spring and the first member or the second member.

6. The speaker unit mounting member according to claim 5, wherein: The spacer is disposed at a position above or below the first member or the second member in the vertical direction in a state where the second member is attached to the attachment object.

7. The speaker unit mounting member according to claim 3, wherein: The distance between the first portion and the second portion is variable.

8. The speaker unit mounting member according to claim 1, wherein: A sealing member is further provided, the sealing member sealing between the first member and the second member over the entire circumference of the speaker unit.

9. The speaker unit mounting member according to claim 8, wherein: The first component and the second component are each annular components, The sealing member is provided along the entire circumference of the outer circumference of the first member and the second member.

10. The speaker unit mounting member according to claim 1, wherein The installation object is a vehicle, The speaker unit is mounted so as to emit sound toward a cabin of the vehicle in a state in which the speaker unit is mounted on the first member.

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