Speakers and vehicles

Abstract

The goal is to make the entire speaker smaller. [Solution] In a vehicle, the speaker 1 comprises a speaker unit 10 having a diaphragm 11 and a frame 14 that supports the diaphragm, a mounting member 20 that is attached to an object to be mounted, a first elastic body 30 that connects the frame and the mounting member, and a second elastic body 40 that contacts a cover member 120 that is placed with a gap between it and the object to be mounted and is arranged along the outer circumference of the speaker unit, wherein the second elastic body is positioned to overlap the first elastic body when viewed in the direction of the central axis of the speaker unit.

Description

Technical Field

[0001] The present disclosure relates to speakers and vehicles.

Background Art

[0002] In a speaker attached to a vehicle door, a configuration for suppressing the transmission of vibration from the speaker unit to the outside may be adopted. For example, Patent Document 1 discloses a device that connects a speaker unit to a mounting member via a spring member. Here, the mounting member is connected to the inner panel of the vehicle door, and a gasket for sealing the space between the door trim of the vehicle door and the mounting member is attached to the mounting member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the device described in Patent Document 1, since the gasket is disposed on the mounting member, a space for disposing the gasket is required on the mounting member. As a result, there is a problem that the mounting member becomes larger, and consequently, the entire speaker becomes larger.

[0005] In view of the above circumstances, an aspect of the present disclosure aims to provide a speaker that can suppress the transmission of vibration from the speaker unit to the outside while achieving miniaturization.

Means for Solving the Problems

[0006] To solve the above problems, a speaker according to a preferred embodiment of the present disclosure comprises a speaker unit having a diaphragm and a frame supporting the diaphragm; a mounting member to be attached to an object to be mounted; a first elastic body connecting the frame and the mounting member; and a second elastic body that contacts a cover member positioned with a gap between it and the object to be mounted and is positioned along the outer circumference of the speaker unit, wherein the second elastic body is positioned to overlap the first elastic body when viewed in the direction of the central axis of the speaker unit.

[0007] A vehicle according to a preferred embodiment of the present disclosure comprises the speaker according to the above embodiment, the mounting object, and the cover member. [Brief explanation of the drawing]

[0008] [Figure 1] This is a cross-sectional view of the speaker according to the first embodiment. [Figure 2] This is a partially enlarged cross-sectional view of the speaker according to the first embodiment. [Figure 3] This is a perspective view of the first and second elastic bodies of the speaker according to the first embodiment. [Figure 4] This is a partially enlarged cross-sectional view of the speaker according to the second embodiment. [Figure 5] This is an exploded perspective view showing an example of a vehicle door. [Modes for carrying out the invention]

[0009] Embodiments of this disclosure will be described below with reference to the drawings. Note that the dimensions and scale of the parts in the drawings have been appropriately altered from those of the actual parts. Furthermore, the embodiments described below are preferred examples of this disclosure. For this reason, these embodiments are subject to various technically preferred limitations. However, the scope of this disclosure is not limited to these embodiments unless otherwise specifically stated in the following description.

[0010] 1. First Embodiment 1-1. Overall speaker configuration Figure 1 is a cross-sectional view of speaker 1 according to the first embodiment. Speaker 1 is a device that emits sound based on an audio signal input from an external device such as an amplifier (not shown), and is mounted on a vehicle such as an automobile. In the illustrated example, speaker 1 is mounted on an object 130 that is covered by a cover member 120.

[0011] The mounting object 130 is an object to which the speaker 1 is attached, and is, for example, a component of a structure such as a door, pillar, dashboard, center console, headrest, or ceiling. In the illustrated example, the mounting object 130 has an opening 131, and the speaker 1 is positioned to cover the opening 131. The speaker 1 is fixed to the mounting object 130 by screw fastening with a plurality of screws SC.

[0012] The cover member 120 is a member interposed between the space S0, which is the interior space of a vehicle (not shown), and the mounting object 130. For example, it may be a door trim for a vehicle door, or a cover of various kinds. In the illustrated example, the cover member 120 has a plurality of holes 121, and the speaker 1 emits sound towards the plurality of holes 121. Such a cover member 120 is positioned with a gap between it and the mounting object 130.

[0013] Specific examples of the object to be attached 130 and the cover member 120 will be explained later with reference to Figure 5.

[0014] As shown in Figure 1, the speaker 1 comprises a speaker unit 10, a mounting member 20, a first elastic body 30, and a second elastic body 40.

[0015] The following describes each part of speaker 1 in order. In the following, the central axis of speaker unit 10 is axis AX, the direction from the back to the front of speaker unit 10 along axis AX is the X1 direction, and the direction opposite to the X1 direction, from the front to the back of speaker unit 10, is the X2 direction. In the following, the X1 and X2 directions may not be distinguished and may simply be referred to as the central axis direction. In addition, the direction along a virtual circle centered on axis AX, or the opposite direction, may be referred to as the circumferential direction. Furthermore, the direction perpendicular to axis AX and away from axis AX, or the opposite direction, may be referred to as the radial direction. In the following, viewing along axis AX may be referred to as a plan view.

[0016] The speaker unit 10 is a dynamic driver that converts electrical audio signals from external devices 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 an edge 16.

[0017] The diaphragm 11 is a vibrating body composed of a sheet material, and emits sound through vibration. The sheet material constituting the diaphragm 11 is obtained, for example, by impregnating a fibrous substrate with a resin material and then curing or solidifying it. Examples of the resin material include polyester resin, acrylic resin, polyurethane, melamine resin, modified rubber resin, and phenolic resin. Examples of the fibrous substrate include carbon fiber, aramid fiber, glass fiber, ceramic fiber, silica fiber, metal fiber, potassium titanate fiber, zirconia 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. The surface of the sheet material may be provided with a coating film composed of, for example, a metal such as aluminum or an inorganic material such as DLC (Diamond-like Carbon).

[0018] 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 the sound radiating surface. In the illustrated example, the diaphragm 11 is cone-shaped. Note that the shape of the diaphragm 11 is not limited to the illustrated example, and for example, it may be dome-shaped.

[0019] The voice coil 12 is fixed to the surface of the diaphragm 11 facing the X2 direction, and generates a magnetic field by inputting an electrical audio signal. The voice coil 12 has a bobbin 12a and a coil 12b. The bobbin 12a has a cylindrical shape with the axis AX as the central axis. One end of the bobbin 12a in the X1 direction is joined to the surface of the diaphragm 11 facing the X2 direction by an adhesive or the like. The coil 12b is composed of a conductor wound circumferentially along the outer periphery of the bobbin 12a. The audio signal is input to the coil 12b. Therefore, a magnetic field corresponding to the audio signal is generated from the voice coil 12.

[0020] The magnetic circuit 13 is a structure that generates a magnetic field acting on the magnetic field from the voice coil 12. The magnetic circuit 13 has a permanent magnet 13a and a yoke 13b. The permanent magnet 13a is a ferrite magnet or a neodymium magnet or the like with the axis AX as the central 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 due to the audio signal acts on the magnetic field from the magnetic circuit 13, causing the diaphragm 11 to vibrate according to the audio signal.

[0021] The frame 14 is a structure that supports the diaphragm 11 and the magnetic circuit 13. The frame 14 is composed of, for example, a metal material or a resin material. The magnetic circuit 13 is fixed to the frame 14. Also, the voice coil 12 is connected to the frame 14 via a damper 15, and the diaphragm 11 is connected to the frame 14 via an edge 16.

[0022] In the illustrated example, the frame 14 generally has a shape that follows the side surface of a frustum of a cone that extends in the X1 direction with axis AX as the center. At the end of the frame 14 in the X1 direction, an edge 16 is joined with adhesive or the like, and the first elastic body 30 is joined by integral molding. On the other hand, at the end of the frame 14 in the X2 direction, a magnetic circuit 13 is joined with adhesive or the like.

[0023] Although not shown in the diagram, the frame 14 has multiple holes that penetrate both the inside and outside of the frame 14, spaced apart in the circumferential direction. This reduces the influence of the air spring on the diaphragm 11.

[0024] The shape of the frame 14 is not limited to the illustrated example and is arbitrary. Also, although the frame 14 is composed of a single member in the illustrated example, it is not limited to this and may be composed of multiple members joined together by adhesive or other means.

[0025] The damper 15 is a flexible sheet material that supports the voice coil 12 relative to the frame 14 while allowing vibration of the diaphragm 11. This sheet material is, for example, shaped into a concentric wave and is made of the same material as the diaphragm 11. The damper 15 is annular when viewed in the direction along the axis AX. The inner edge of the damper 15 is joined to the voice coil 12 with an adhesive or the like. The outer edge of the damper 15 is joined to the frame 14 with an adhesive or the like. The damper 15 may be provided as needed or omitted.

[0026] The edge 16 is a flexible, membrane-like or sheet-like member that connects the outer edge of the diaphragm 11 to the frame 14, and is also called a surround. Here, the edge 16 seals the gap between the diaphragm 11 and the frame 14. The edge 16 is made of a rubber material such as elastomer, for example.

[0027] Although not shown in the diagram, the edge 16 has an annular shape when viewed in the direction along the axis AX. The edge 16 has an inner portion fixed to the diaphragm 11, an outer portion fixed to the frame 14, and a connecting portion that connects the inner portion and the outer portion to allow vibration of the diaphragm 11.

[0028] The speaker unit 10 described above is supported by the mounting member 20 via the first elastic body 30.

[0029] The mounting member 20 is a component for attaching the speaker 1 to the mounting object 130, and is attached to the mounting object 130. The mounting member 20 is made of, for example, a metal material or a resin material.

[0030] In the illustrated example, the mounting member 20 has a flange shape with the thickness direction aligned with the axis AX. The mounting member 20 is provided with a plurality of holes 21 that penetrate the mounting member 20 in the direction aligned with the axis AX. Each hole 21 is for inserting a screw SC. When the screw SC is inserted into the hole 21, it fits into the hole HL of the object to be mounted 130. In this way, the mounting member 20 is fixed to the object to be mounted 130 by screw fastening with the screw SC.

[0031] The first elastic body 30 is an elastic member that supports the frame 14 with respect to the mounting member 20, and connects the frame 14 and the mounting member 20. The first elastic body 30 is made of, for example, rubber or elastomer. In particular, the first elastic body 30 is preferably made of rubber such as butyl rubber (IIR), ethylene propylene diene rubber (EPDM), silicone rubber, elastomer, urethane rubber, or nylon-rubber copolymer.

[0032] Furthermore, the first elastic body 30 only needs to support the frame 14 with respect to the mounting member 20, and is not limited to being directly fixed to the frame 14; it may also be indirectly fixed to the frame 14 via other members of the speaker unit 10.

[0033] The second elastic body 40 is an annular elastic member for connecting the cover member 120 and the speaker 1, and is in contact with the cover member 120 and arranged along the outer circumference of the speaker unit 10. The second elastic body 40 is, for example, a foam (sponge) made of a resin material, rubber material or elastomer material, or a fibrous material such as felt. In particular, the second elastic body 40 is preferably made of a sponge such as foamed urethane.

[0034] The second elastic body 40 is positioned to overlap the first elastic body 30 when viewed in the direction of the central axis of the speaker unit 10. In this embodiment, the second elastic body 40 is joined to the first elastic body 30 by adhesive. The second elastic body 40 may also be integrally molded with the first elastic body 30 by insert molding or multi-color molding.

[0035] In the illustrated example, the second elastic body 40 connects the rib 122 provided on the cover member 120 to the first elastic body 30. The rib 122 is a projection that protrudes in the X2 direction from the surface of the cover member 120 facing the X2 direction, and is provided in an annular shape surrounding a collection of multiple holes 121. The second elastic body 40 is in close contact with the rib 122 and the speaker unit 10 around the entire circumference of the rib 122. As a result, the second elastic body 40 divides the space between the mounting object 130 and the cover member 120 into space S1 and space S2. Space S1 is a part of the space between the mounting object 130 and the cover member 120, and is a space for releasing sound emitted from the front of the speaker unit 10 into space S0, which is the vehicle interior space. Space S2 is a part of the space between the mounting object 130 and the cover member 120, and is the space outside of space S1. Note that the shape of the rib 122 is not limited to the shape shown and is arbitrary. Furthermore, the ribs 122 may be provided as needed or omitted. Also, it is sufficient that at least a portion of the second elastic body 40 overlaps with at least a portion of the first elastic body 30 when viewed in the direction of the central axis. For example, portions of the first elastic body 30 and the second elastic body 40 may overlap when viewed in the direction of the central axis in the circumferential or radial direction.

[0036] With the speaker 1 described above, the speaker unit 10 is supported by the mounting member 20 via the first elastic body 30, so the transmission of vibrations from the speaker unit 10 to the outside can be suppressed. In addition, since the second elastic body 40 that contacts the cover member 120 is arranged along the outer circumference of the speaker unit 10, sound from the diaphragm 11 can be efficiently guided forward. Moreover, since the second elastic body 40 is positioned to overlap with the first elastic body 30 when viewed in the direction of the central axis of the speaker unit 10, there is no need to provide space for the second elastic body 40 in the mounting member 20. Therefore, the mounting member 20 can be miniaturized, and consequently, the entire speaker 1 can be miniaturized.

[0037] In contrast, if the second elastic body 40 is placed on the mounting member 20, it is necessary to provide space for screw fastening with screws SC to avoid the second elastic body 40, which leads to an increase in the size of the mounting member 20, and consequently, an increase in the size of the speaker 1.

[0038] 1-2. Details of the first and second elastic bodies Figure 2 is a partially enlarged cross-sectional view of speaker 1 according to the first embodiment. In Figure 2, the first elastic body 30, the second elastic body 40, and the surrounding portions of speaker 1 are shown in enlargement. Figure 3 is a perspective view of the first elastic body 30 and the second elastic body 40 of speaker 1 according to the first embodiment. In Figure 3, the outer shapes of the frame 14 and the mounting member 20 are also shown by dashed lines.

[0039] As shown in Figure 2, the first elastic body 30 is integrally formed with both the frame 14 and the mounting member 20. That is, the mounting member 20 and the first elastic body 30 are integrally formed with the frame 14 so as to become part of the frame 14. This makes it possible to miniaturize one or both of the frame 14 and the mounting member 20 compared to a configuration in which the first elastic body 30 is formed separately from the frame 14 and the mounting member 20. In addition, the number of parts is reduced, so the assembly time of the speaker can be reduced, and as a result, manufacturing costs can be reduced. Here, "integrally formed" means that it is integrally molded by insert molding or multi-color molding, etc.

[0040] As shown in Figure 2, the first elastic body 30 has bonding surfaces 31, 32, 33, 34 and exposed surfaces 35, 36, 37.

[0041] The joining surface 31 is a part of the outer surface of the first elastic body 30 and is the surface that is joined to the frame 14. In the illustrated example, the joining surface 31 is the surface facing inward in the radial direction and is joined to the surface of the frame 14 facing outward in the radial direction. The joining surface 31 is joined to the frame 14 by, for example, integral molding of the frame 14 and the first elastic body 30.

[0042] The joining surface 32 is a part of the outer surface of the first elastic body 30 and is the surface that is joined to the mounting member 20. In the illustrated example, the joining surface 32 is the surface facing outward in the radial direction and is joined to the surface of the mounting member 20 facing inward in the radial direction. The joining surface 32 is joined to the mounting member 20 by, for example, integral molding of the mounting member 20 and the first elastic body 30.

[0043] The joining surface 33 is a part of the outer surface of the first elastic body 30 and is the surface that is joined to the mounting member 20. In the illustrated example, the joining surface 33 is the surface facing the X2 direction and is joined to the surface of the mounting member 20 facing the X1 direction. The joining surface 33 is joined to the mounting member 20 by, for example, integral molding of the mounting member 20 and the first elastic body 30.

[0044] The bonding surface 34 is a part of the outer surface of the first elastic body 30 and is the surface that is bonded to the second elastic body 40. In the illustrated example, the bonding surface 34 is the surface facing the X1 direction and is bonded to the surface of the second elastic body 40 facing the X2 direction. The bonding surface 34 is bonded to the second elastic body 40 by, for example, an adhesive.

[0045] The exposed surface 35 is a part of the outer surface of the first elastic body 30, is exposed to space S1, and is mainly composed of surfaces facing inward in the radial direction. In the illustrated example, the exposed surface 35 connects the joint surface 31 and the joint surface 34.

[0046] The exposed surface 36 is a part of the outer surface of the first elastic body 30, and is a surface that is exposed toward the opening of the object to be attached 130, and is composed of a surface facing in the X2 direction. In the illustrated example, the exposed surface 36 connects the joining surface 31 and the joining surface 32.

[0047] The exposed surface 37 is a part of the outer surface of the first elastic body 30, is exposed to space S2, and is mainly composed of surfaces facing outward in the radial direction. In the illustrated example, the exposed surface 37 connects the joint surface 33 and the joint surface 34.

[0048] As described above, the speaker unit 10 is supported by the mounting member 20 via the first elastic body 30.

[0049] Here, the resonant frequency fc, based on the spring constant k1 of the first elastic body 30 and the mass m of the speaker unit 10, is expressed by the following equation (1). Note that the mass m may be the sum of the mass of the speaker unit 10 and the mass of the first elastic body 30.

number

[0050] Here, the resonant frequency fc is lower than the output audio band of the speaker unit 10. Therefore, vibrations transmitted from the speaker unit 10 to the mounting member 20 are suitably reduced. Furthermore, the resonant frequency fc is less than the resonant frequency f0, which is the lowest resonant frequency of the speaker unit 10. The resonant frequency f0 corresponds to the lower limit of the output audio band of the speaker unit 10, for example, between 30Hz and 60Hz. In this way, because the resonant frequency fc is less than the resonant frequency f0, vibrations transmitted from the speaker unit 10 to the mounting member 20 are suitably reduced.

[0051] The resonant frequency fc is adjusted, for example, according to the size and constituent materials of the first elastic body 30.

[0052] From the viewpoint of suitably realizing the functions of the first elastic body 30 as described above, it is preferable that the hardness of the second elastic body 40 is lower than that of the first elastic body 30. This reduces the influence of the elasticity of the second elastic body 40 on the elasticity of the first elastic body 30. As a result, the transmission of vibrations from the speaker unit 10 to the outside can be suitably suppressed.

[0053] More specifically, the hardness of the second elastic body 40 is preferably 1 / 2 or less of the hardness of the first elastic body 30, more preferably 1 / 5 or more and 1 / 2 or less, and even more preferably 1 / 3 or more and 1 / 2 or less. This allows for a suitable balance between the function of the second elastic body 40, which efficiently guides sound from the diaphragm 11 forward, and the function of the first elastic body 30, which suppresses the transmission of vibrations from the speaker unit 10 to the outside.

[0054] From the viewpoint of satisfying the relationship between the hardness of the first elastic body 30 and the second elastic body 40, it is preferable that the first elastic body 30 is made of rubber and the second elastic body 40 is made of sponge. This allows for a suitable balance between the function of the second elastic body 40, which efficiently guides sound from the diaphragm 11 forward, and the function of the first elastic body 30, which suppresses the transmission of vibrations from the speaker unit 10 to the outside.

[0055] In this embodiment, as shown in Figure 3, the first elastic body 30 and the second elastic body 40 each form an annular shape along the outer circumference of the frame 14. This simplifies the structure while allowing the gap between the first elastic body 30 and the cover member 120 to be connected by the second elastic body 40 around the entire circumference of the frame 14. Note that the shape of the first elastic body 30 is not limited to an annular shape; for example, it may be divided into parts in the circumferential direction. Also, the outer shape of the mounting member 20 is not limited to the illustrated example and can be arbitrary.

[0056] According to the first embodiment described above, by positioning the second elastic body 40 so as to overlap the first elastic body 30 when viewed in the direction of the central axis of the speaker unit 10, it is possible to miniaturize the speaker 1 while suppressing the transmission of vibrations from the speaker unit 10 to the outside.

[0057] 2. Second Embodiment The following describes a second embodiment of this disclosure. For elements whose operation and function are the same as in the first embodiment in the embodiments described below, the reference numerals used in the description of the first embodiment will be reused, and detailed descriptions of each will be omitted as appropriate.

[0058] Figure 4 is a partially enlarged cross-sectional view of speaker 1A according to the second embodiment. Speaker 1A is configured similarly to speaker 1 of the first embodiment, except that it includes mounting member 20A and first elastic body 30A, respectively, instead of mounting member 20 and first elastic body 30 of the first embodiment.

[0059] Mounting member 20A is configured similarly to mounting member 20 of the first embodiment, except for the addition of portion 22. Portion 22 has a surface facing the X1 direction and a surface facing the X2 direction. The surface of the second elastic body 40 facing the X2 direction is joined to the surface of portion 22 facing the X1 direction by an adhesive or the like. On the other hand, the first elastic body 30 is joined to the surface of portion 22 facing the X2 direction.

[0060] The first elastic body 30A is configured in the same way as the first elastic body 30 of the first embodiment, except that its cross-sectional shape is different. The first elastic body 30A has a joint surface 38 instead of the joint surfaces 33 and 34 of the first embodiment, and the exposed surface 37 is omitted, except that the first elastic body 30A has joint surfaces 31, 32, and 38 and exposed surfaces 35 and 36.

[0061] The joining surface 38 is a part of the outer surface of the first elastic body 30 and is the surface that is joined to the portion 22 of the mounting member 20A. In the illustrated example, the joining surface 38 is the surface facing in the X1 direction and portion 22 It is joined to the surface facing the X2 direction. The joining surface 38 is joined to the mounting member 20A by, for example, integral molding of the mounting member 20A and the first elastic body 30A.

[0062] As described above, the speaker unit 10 is supported by the mounting member 20A via the first elastic body 30A.

[0063] The second embodiment described above also makes it possible to miniaturize the speaker 1A while suppressing the transmission of vibrations from the speaker unit 10 to the outside. 3. Vehicles

[0064] Figure 5 is an exploded perspective view showing an example of a door DR of vehicle 100. As shown in Figure 5, the door DR comprises an outer panel 110, a cover member 120, a mounting object 130, a speaker 1, and a gasket 170. The door DR may also be equipped with a speaker 1A instead of speaker 1.

[0065] The outer panel 110, the mounting object 130, and the cover member 120 are arranged in this order in the X1 direction. In this way, the outer panel 110 faces the outside of the vehicle, the cover member 120 is positioned on the passenger compartment side, and the mounting object 130 is positioned between the outer panel 110 and the cover member 120. In the example shown in Figure 5, a frame 150 for a vertically movable window glass 140 is provided integrally with the outer panel 110 and the mounting object 130. Note that the frame 150 may be omitted.

[0066] The outer panel 110 and the mounting object 130 are each made of, for example, steel plate. The outer edges of the outer panel 110 and the mounting object 130 are joined to each other by welding or the like. Note that the outer panel 110 and the mounting object 130 are not limited to being made of steel plate, but may be made of, for example, aluminum alloy or carbon fiber composite material.

[0067] A space is provided between the outer panel 110 and the mounting object 130. This space is used as an enclosure for the speaker 1. Although not shown, a window lifting mechanism for raising and lowering the window glass 140 and a door lock mechanism are also arranged in this space.

[0068] In the illustrated example, the mounting object 130 is an inner panel having an opening 131 and a plurality of openings 132. The opening 131 is closed by the speaker 1. The mounting member 20 of the speaker 1 is fixed to the mounting object 130 by screwing it with the aforementioned screws SC or the like. Each of the plurality of openings 132 is a hole used for assembly work such as the aforementioned lifting mechanism and door lock mechanism. At least one of the plurality of openings 132 may be closed by a sheet member made of resin material or the like.

[0069] In the illustrated example, the cover member 120 is an interior material made of resin or the like. The cover member 120 has a plurality of holes 121. These multiple holes 121 are used as pathways for releasing sound from the speaker 1 into the space inside the vehicle. Alternatively, a single hole may be provided in the cover member 120 instead of multiple holes 121. Furthermore, the multiple holes 121 may be covered with a mesh material such as a speaker grille.

[0070] The cover member 120 is detachably attached to the object to be attached 130 by a plurality of connecting members 160. Each connecting member 160 is, for example, a rivet or clip made of resin. Each connecting member 160 has one end that is fixed to the cover member 120 and the other end that is inserted into the 133 of the object to be attached 130.

[0071] A packing 170 is placed between the cover member 120 and the object to be attached 130. The packing 170 is an annular elastic member that runs along the outer edge of the cover member 120 or the object to be attached 130, and seals the gap between them in an elastically deformed state. The packing 170 is made of, for example, a rubber material or an elastomer material. The packing 170 may also be made of a closed-cell foam.

[0072] As described above, the vehicle 100 comprises a speaker 1, a mounting object 130, and a cover member 120. In such a vehicle 100, the speaker 1 can be made smaller, thus increasing the flexibility in the placement of the speaker 1.

[0073] 4. Variations This disclosure is not limited to the embodiments described above, and various modifications are possible as described below. Furthermore, each embodiment and each modification may be combined as appropriate.

[0074] 4-1. Variation 1 In the embodiments described above, the first elastic body 30 is exemplified as being made of rubber or elastomer, but the invention is not limited to this embodiment. For example, instead of the first elastic body 30, an elastic member such as a leaf spring or coil spring made of metal or resin may be used as the first elastic body. In this case, the shape of the mounting member 20 and other aspects can be appropriately changed depending on the shape or material of the elastic member.

[0075] 4-2. Variation 2 In the above-described embodiment, an example is given in which the first elastic body 30 is integrally configured with the frame 14 and the mounting member 20. However, the embodiment is not limited to this, and the first elastic body 30 may be configured separately from one or both of the frame 14 and the mounting member 20. In this case, the first elastic body 30 is joined to one or both of the frame 14 and the mounting member 20, for example, by adhesive or screw fastening.

[0076] 4-3. Variation 3 In the embodiments described above, a configuration in which each of the speaker units 10 is of the dynamic type is exemplified, but the invention is not limited to this, and the speaker unit of this disclosure may also use a conversion method such as a capacitor type (electrostatic type), ribbon type, ion type (discharge type), magnetic type, piezoelectric type, etc.

[0077] 5. Addendum From the forms or modifications illustrated above, for example, the following embodiments can be understood.

[0078] (Note 1) A first embodiment of the speaker of the present disclosure is a speaker unit having a diaphragm and a frame supporting the diaphragm; a mounting member to be attached to an object to be attached; a first elastic body connecting the frame and the mounting member; and a second elastic body that contacts a cover member positioned with a gap between it and the object to be attached and is positioned along the outer circumference of the speaker unit, wherein the second elastic body is positioned to overlap the first elastic body when viewed in the direction of the central axis of the speaker unit.

[0079] According to the above embodiment, since the speaker unit is supported by the mounting member via the first elastic body, the transmission of vibrations from the speaker unit to the outside can be suppressed. Furthermore, since the second elastic body that contacts the cover member is arranged along the outer circumference of the speaker unit, sound from the diaphragm can be efficiently guided forward. Moreover, since the second elastic body is positioned to overlap with the first elastic body when viewed in the direction of the central axis of the speaker unit, there is no need to provide space for the second elastic body in the mounting member. As a result, the mounting member can be miniaturized, and consequently, the entire speaker can be miniaturized.

[0080] (Note 2) In the second embodiment, which is a preferred example of the first embodiment, the hardness of the second elastic body is lower than that of the first elastic body. According to the above embodiment, the influence of the elasticity of the second elastic body on the elasticity of the first elastic body can be reduced. Therefore, the transmission of vibrations from the speaker unit to the outside can be suitably suppressed.

[0081] (Note 3) In the third embodiment, which is a preferred example of the second embodiment, the hardness of the second elastic body is 1 / 2 or less of the hardness of the first elastic body. In the above embodiment, both the function of the second elastic body, which efficiently guides sound from the diaphragm forward, and the function of the first elastic body, which suppresses the transmission of vibrations from the speaker unit to the outside, are suitably achieved.

[0082] (Note 4) In a fourth embodiment, which is a preferred example of any of the first to third embodiments, the first elastic body is made of rubber, and the second elastic body is made of sponge. According to the above embodiments, both the function of the second elastic body, which efficiently guides sound from the diaphragm forward, and the function of the first elastic body, which suppresses the transmission of vibrations from the speaker unit to the outside, can be suitably achieved.

[0083] (Note 5) In a fifth embodiment, which is a preferred example of any of the first to fourth embodiments, the first elastic body is integrally formed with one or both of the frame and the mounting member. According to the above embodiments, compared to embodiments in which the first elastic body is formed separately from the frame and the mounting member, one or both of the frame and the mounting member can be made smaller. In addition, since the number of parts is reduced, the assembly time of the speaker can be reduced, and as a result, manufacturing costs can be reduced.

[0084] (Note 6) In the sixth embodiment, which is a preferred example of any of the first to fifth embodiments, the first elastic body and the second elastic body each form an annular shape along the outer circumference of the frame. According to the above embodiment, the gap between the first elastic body and the cover member can be connected by the second elastic body around the entire circumference of the frame while simplifying the structure.

[0085] (Note 7) A seventh embodiment, which is a preferred example of the vehicle of the present disclosure, comprises a speaker according to any of the first to sixth embodiments, the mounting object, and the cover member. In this embodiment, the speaker can be made smaller, and the degree of freedom in the placement of the speaker can be increased. [Explanation of Symbols]

[0086] 1...Speaker, 1A...Speaker, 10...Speaker unit, 11...Diaphragm, 12...Voice coil, 12a...Bobbin, 12b...Coil, 13...Magnetic circuit, 13a...Permanent magnet, 13b...Yoke, 14...Frame, 15...Damper, 16...Edge, 20...Mounting member, 20A...Mounting member, 21...Hole, 22...Part, 30...First elastic body, 30A...First elastic body, 31...Joint surface, 32...Joint surface, 33...Joint surface, 34... Joint surface, 35…exposed surface, 36…exposed surface, 37…exposed surface, 38…joint surface, 40…second elastic body, 100…vehicle, 110…outer panel, 120…cover member, 121…hole, 122…rib, 130…object to be attached, 131…opening, 132…opening, 140…window glass, 150…frame, 160…connecting member, 170…packing, AX…axis, DR…door, HL…hole, S0…space, S1…space, S2…space, SC…screw.

Claims

1. A speaker unit having a diaphragm and a frame that supports the diaphragm, Mounting member to be attached to the object to be mounted, A first elastic body connecting the frame and the mounting member, The speaker unit comprises a second elastic body that contacts a cover member positioned with a gap between it and the object to be mounted, and is positioned along the outer circumference of the speaker unit, The second elastic body is positioned so as to overlap the first elastic body when viewed in the direction of the central axis of the speaker unit. speaker.

2. The hardness of the second elastic body is lower than the hardness of the first elastic body. The speaker according to claim 1.

3. The hardness of the second elastic body is 1 / 2 or less of the hardness of the first elastic body. The speaker according to claim 2.

4. The first elastic body is made of rubber, The second elastic body is made of sponge. The speaker according to claim 2.

5. The first elastic body is integrally formed with one or both of the frame and the mounting member. The speaker according to claim 1.

6. Each of the first elastic body and the second elastic body forms an annular shape along the outer circumference of the frame. The speaker according to claim 5.

7. The speaker according to claim 1, The aforementioned object to be attached, The cover member comprises, vehicle.

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