Speaker and speaker mounting structure

Abstract

This speaker comprises a speaker unit and a holding member holding the speaker unit. The holding member is formed from an elastic material, and has a holding portion holding the speaker unit and an attachment portion provided in one piece with the holding portion and secured to a rear case.

Description

[Technical field]

[0001] This disclosure The present invention relates to a speaker and a mounting structure for the speaker. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2005-20292 discloses a speaker device in which a speaker unit is attached to a vehicle door inner panel (mounting target). In this speaker device, an insulator that attaches the frame of the speaker unit to the door inner panel is provided with an elastic member, and the elastic member absorbs vibrations transmitted from the speaker unit to the door inner panel. This configuration suppresses the emission of unwanted sounds, such as so-called "sticking sounds," from the door inner panel due to vibrations of the speaker unit. Summary of the Invention [Problem to be solved by the invention]

[0003] However, the technique described in JP 2005-20292 A requires elastic members for the number of insulators, which increases the number of parts and complicates the assembly work.

[0004] This disclosure In consideration of the above problems, an object of the present invention is to provide a speaker that can suppress the emission of unnecessary sound due to vibrations transmitted from the speaker and can simplify the assembly work of the speaker to an object to which it is attached. [Means for solving the problem]

[0005] The speaker of the first aspect is a speaker comprising a speaker unit and a holding member that holds the speaker unit, the holding member being formed from an elastic material and having a holding portion that holds the speaker unit, and an attachment portion that is integral with the holding portion and is fixed to an attachment object.

[0006] According to a first aspect, a speaker includes a holding member made of an elastic material, and a speaker unit held by the holding member. teeth The speaker unit has a holding portion that holds the speaker unit, and a mounting portion that is provided integrally with the holding portion and fixed to the mounting object. That is, the speaker unit is configured to be fixed to the mounting object via the mounting portion formed of an elastic material. This allows vibrations of the speaker unit to be absorbed by the mounting portion, making it difficult for the vibrations to be transmitted to the mounting object. As a result, it is possible to suppress the emission of unnecessary sound from the mounting object due to vibrations transmitted from the speaker unit. Furthermore, by providing the mounting portion and the holding portion integrally, the number of parts is reduced, and the work of assembling the speaker to the mounting object can be simplified.

[0007] A speaker according to a second aspect is the same as the speaker according to the first aspect, wherein the holding member has an enclosure portion that surrounds the rear surface of the speaker unit.

[0008] According to the second aspect, the rear surface of the speaker unit is surrounded by an enclosure portion. This allows the holding member to form a so-called "sealed" enclosure. Such a sealed enclosure allows the internal volume of the back chamber of the speaker unit to be set arbitrarily according to the dimensions and shape of the enclosure portion, and allows the acoustic characteristics of the speaker to be adjusted. This allows the adjustment of the acoustic characteristics to be completed at the speaker design stage, eliminating the need to adjust the acoustic characteristics on the mounting target side.

[0009] A speaker according to a third aspect has the configuration according to the first or second aspect, wherein the holding portion is formed with a rectangular groove that holds an outer periphery of the speaker unit.

[0010] According to the third aspect, the outer periphery of the speaker unit is held by a rectangular groove formed in the holding part. Here, since the holding part in this aspect is formed of an elastic material, the elastic restoring force of the holding part can be used to bring the side of the rectangular groove into close contact with the outer periphery of the speaker unit. Therefore, it is possible to ensure airtightness between the holding part and the speaker unit, and to suppress deterioration of sound pressure and sound quality due to air leakage.

[0011] The speaker of the fourth aspect has the configuration described in the third aspect, in which a linear protrusion is formed on a side of the rectangular groove so as to protrude toward the outer periphery, and the holding portion is in close contact with the outer periphery via the linear protrusion.

[0012] According to the fourth aspect, by providing a linear protrusion on the side surface of the rectangular groove that protrudes toward the outer periphery of the speaker unit, a part of the side surface of the rectangular groove can be actively brought into close contact with the outer periphery of the speaker unit, thereby reliably obtaining a tight seal between the holding part and the speaker unit.

[0013] The speaker according to a fifth aspect has the configuration described in any one of the first to fourth aspects, wherein the mounting portion is integrally provided with a fixing portion that is inserted into a mounting hole formed in the mounting object and fixed thereto.

[0014] According to the fifth aspect, the holding member is configured to be fixed to the mounting object by inserting the fixing portion integral with the mounting portion into the mounting hole of the mounting object. This makes it possible to further simplify the work of assembling the speaker to the mounting object since no tool such as a screwdriver is required to fix the holding member to the mounting object.

[0015] A speaker mounting structure according to a sixth aspect is a speaker mounting structure for mounting a speaker according to any one of the first to fourth aspects to an attachment target, wherein an accommodating recess is formed in the attachment target, and the mounting part is fixed to the attachment target with the retaining member fitted into the accommodating recess.

[0016] According to the sixth aspect, the speaker holding member is fixed to the mounting target in a state where it is fitted into a receiving recess formed in the mounting target. This makes it possible to reduce unevenness on the surface of the mounting target, and to prevent the speaker from interfering with peripheral members of the mounting target. Effect of the Invention

[0017] According to the present disclosure, it is possible to provide a speaker and a speaker mounting structure that can suppress the emission of unnecessary sound due to vibrations transmitted from the speaker and simplify the work of assembling the speaker to the mounting object. [Brief description of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view showing an overall structure in which a speaker according to an embodiment of the present invention is attached to an attachment target. [Diagram 2] FIG. 2 is an exploded perspective view of the speaker according to the embodiment. [Diagram 3] 1A is a cross-sectional view showing a state before the speaker unit according to the present embodiment is attached to a holding member, and FIG. 1B is a cross-sectional view showing a state in which the speaker unit has been attached to and held by the holding member. [Figure 4] 13A and 13B are diagrams illustrating a modified example of the holding member according to the embodiment. [Diagram 5] 13A and 13B are diagrams illustrating a modified example of the holding member according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] A speaker 1 according to this embodiment will be described below with reference to Figs. 1 to 5. As an example, the speaker 1 is mounted on a meter device 2 mounted on a vehicle. For ease of explanation, in Fig. 1, the front side of the device facing the interior of the vehicle is indicated by an arrow FR, and the upper side of the device is indicated by an arrow UP. In addition, the same or equivalent components and parts are given the same reference symbols in each drawing.

[0020] (Overall composition) As shown in Fig. 1, the meter device 2 is installed on an instrument panel arranged in front of a driver in a vehicle cabin (not shown). The meter device 2 has a case 10 that houses a meter board 3 therein. The case 10 is generally formed in a flat box shape in the front-rear direction and has a meter case 12 that divides the internal space into front and rear spaces. A front case 14 is provided in front of the meter case 12, and a front space F is formed between the meter case 12 and the front case 14. A rear case 16 is provided behind the meter case 12, and a rear space R is formed between the meter case 12 and the rear case 16.

[0021] The meter case 12 is formed in a box shape that is open to the rear, and has a front vertical wall portion 12A whose plate thickness direction is in the front-to-rear direction, and a side wall portion 12B that stands rearward from the periphery of the front vertical wall portion 12A. A meter display portion 13 that displays the measured values ​​of various measuring instruments mounted on the vehicle is formed on the front side (rear side of the vehicle) surface of the front vertical wall portion 12A. This meter display portion 13 is configured to be visible to passengers in the vehicle cabin through a transparent window portion 14A provided in the front case 14.

[0022] Meanwhile, a board support portion 12C is provided inside the side wall portion 12B of the meter case 12, and the board support portion 12C supports the meter board 3. A control device (not shown) that receives signals from various measuring instruments mounted on the vehicle is mounted on the front mounting surface of the meter board 3. Meanwhile, the rear mounting surface of the meter board 3 is disposed opposite a speaker 1 (described later), and a wiring 4 extending from the speaker 1 is connected to the mounting surface via a connector 5. Electronic components required for controlling the speaker 1 are mounted on the mounting surface of the meter board 3 to which the connector 5 is connected.

[0023] The rear case 16 is formed in a box shape that is open to the front side, and has a rear vertical wall portion 16A whose plate thickness direction is the front-rear direction, and a side wall portion 16B that stands on the periphery of the rear vertical wall portion 16A to the front side. The rear vertical wall portion 16A has a storage recess 18 that is recessed into the inside of the rear case 16. A substantially circular opening 19 is provided at the center of the storage recess 18. A holding member 30 (described later) is fitted into the storage recess 18 while holding a speaker unit 20 inside. In this state, the holding member 30 does not protrude from the surface of the rear case 16. The speaker 1 will be described in detail below.

[0024] (Speaker) Fig. 2 shows an exploded perspective view of the speaker 1. As shown in Fig. 2, the speaker 1 includes a speaker unit 20 that outputs an acoustic signal (sound wave) by vibrating a diaphragm 26, and a holding member 30 that holds the speaker unit 20. Note that the speaker 1 of this embodiment is attached to the meter device 2 in a position in which a front surface 20A of the speaker unit 20 faces the rear side of the meter device 2 (see Fig. 1).

[0025] (Speaker unit) The speaker unit 20 has a main body 22 equipped with a diaphragm 26 and a front cover 24 attached to the main body 22 .

[0026] The main body 22 is configured to include a diaphragm 26 and a magnetic circuit (not shown), and a frame 28 that supports the diaphragm 26 and the magnetic circuit is attached to the rear side of the diaphragm 26. The diaphragm 26 is disposed on the front side of the main body 22 (the front side 20A side of the speaker unit 20). The frame 28 is disposed on the rear side of the main body 22 (the rear side 20B side of the speaker unit 20).

[0027] The front cover 24 includes a front portion 24A that covers the front surface of the main body portion 22, and a side portion 24B that covers the radially outer side surface of the main body portion 22. The front cover 24 is formed of resin, for example. The front portion 24A is formed in a circular plate shape with the plate thickness direction being the axial direction (direction of amplitude) of the speaker 1, and is disposed opposite the front surface of the main body portion 22. A plurality of through holes 40 are formed in the front portion 24A, and the inside and outside of the front cover 24 are communicated by these through holes 40. The side portion 24B is erected from the periphery of the front portion 24A toward the rear side of the main body portion 22. The side portion 24B is fitted to the outer periphery of the main body portion 22 by a fitting claw (not shown) formed on the inner periphery.

[0028] In this way, as shown in Fig. 3(A), the speaker unit 20 is housed in a holding member 30 (described later) after the main body 22 and the front cover 24 are integrated in advance (see Fig. 3(B)). Note that the front cover 24 is not essential for the speaker unit 20, and the speaker unit may be configured without the front cover.

[0029] (Retaining member) The holding member 30 is made of an elastic material, and is integrally formed with a holding portion 32, an attachment portion 34, and an enclosure portion 36. The holding member 30 holds the speaker unit 20 and also constitutes a so-called enclosure for the speaker 1.

[0030] As shown in FIG. 1 and FIG. 3, the holding portion 32 of the holding member 30 has a function of holding the outer periphery of the speaker unit 20. Specifically, the holding portion 32 is formed in a cylindrical shape surrounding the outer periphery of the speaker unit 20, and a rectangular groove 42 that opens toward the inside in the radial direction is formed on the inner periphery of the holding portion 32. The rectangular groove 42 is composed of a vertical side surface 32A facing the side surface of the front cover 24, a front side surface 32B extending radially inward from the front end of the vertical side surface 32A, and a rear side surface 32C extending radially inward from the rear end. The holding portion 32 is configured such that the outer periphery of the front cover 24 is fitted into the rectangular groove 42 and held. The front end of the vertical side surface 32A indicates the end of the vertical side surface 32A on the front side of the speaker unit 20, and the rear end of the vertical side surface 32A indicates the end of the vertical side surface 32A on the rear side of the speaker unit 20.

[0031] Further, linear protrusions 50 are provided on the vertical side surface 32A of the rectangular groove 42 to improve the sealing performance between the holding portion 32 and the speaker unit 20. The linear protrusions 50 are formed in an annular shape along the circumferential direction of the holding portion 32, and in a triangular shape protruding toward the side surface portion 24B (outer periphery) of the front cover 24. In this embodiment, a plurality of linear protrusions 50 are provided along the axial direction of the holding portion 32.

[0032] As shown in FIG. 3(A), the inner diameter of the holding portion 32 at the tip portion of the linear protrusion 50 is formed slightly smaller than the outer shape of the side surface portion 24B (the outer diameter of the front cover 24). As a result, when the outer periphery of the front cover 24 is accommodated inside the rectangular groove 42, the tip of the linear protrusion 50 is elastically deformed and crushed, and is in close contact with the side surface portion 24B of the front cover 24. As shown in FIG. 3(B), the linear protrusion 50 is in close contact with the entire circumference of the side surface portion 24B, so that no gap is formed between the front cover 24 and the holding portion 32, and the front cover 24 and the holding portion 32 are in a sealed state. As a result, air leakage between the outer periphery of the front cover 24 and the holding member 30 can be suppressed.

[0033] In this embodiment, the linear protrusion 50 is provided on the vertical side surface 32A of the rectangular groove 42. However, when the linear protrusion 50 is provided, it is sufficient that the linear protrusion 50 is arranged so as to be in close contact with the entire circumference of the outer periphery of the front cover 24. Therefore, as shown in FIG. 4, the linear protrusion 50 may be provided on the front side surface 32B of the rectangular groove 42. The linear protrusion 50 shown in FIG. 4 is provided in an annular shape around the entire circumference of the front side surface 32B, and is formed in a triangular shape protruding toward the front surface 24A of the front cover 24. When the outer periphery of the front cover 24 is accommodated inside the rectangular groove 42, the linear protrusion 50 is in close contact with the front surface 24A of the front cover 24. Also, from the same viewpoint as FIG. 4, the linear protrusion 50 may be provided on the rear side surface 32C of the rectangular groove 42.

[0034] 2, the attachment portion 34 of the holding member 30 is configured as a plate-like portion extending radially outward from the outer surface of the holding portion 32. The axial direction of the holding portion 32 is the plate thickness direction of this attachment portion 34, and a plurality of attachment portions 34 (three in this embodiment) are provided along the circumferential direction of the holding portion 32. When the holding member 30 is attached to the rear case 16, the attachment portions 34 are placed in the accommodation recess 18 of the rear case 16 (see FIG. 1).

[0035] A fixing portion 60 is provided on the lower surface of the mounting portion 34, protruding toward the rear surface 20B of the speaker unit 20. The fixing portion 60 is provided integrally with the mounting portion 34 and is made of an elastic material. The fixing portion 60 has a cylindrical pillar portion 60A and a hook portion 60B provided on the tip side of the pillar portion 60A and protruding radially outward from the pillar portion 60A. The hook portion 60B is formed in a truncated cone shape with a diameter that decreases toward the tip. The mounting portion 34 is also formed with a through hole 61 that penetrates from the front side of the mounting portion 34 to the tip side of the fixing portion 60.

[0036] As shown in FIG. 1, the mounting hole 44 corresponding to the fixing portion 60 of the holding member 30 is formed in the accommodation recess 18 of the rear case 16. The inner diameter of the mounting hole 44 is formed to be approximately the same as the outer diameter of the column portion 60A of the fixing portion 60. On the other hand, the inner diameter of the mounting hole 44 is formed smaller than the outer diameter of the base end side of the hook portion 60B. Also, the inner diameter of the mounting hole 44 is formed larger than the outer diameter of the tip end side of the hook portion 60B. This allows the tip end side of the hook portion 60B to be inserted into the mounting hole 44 of the accommodation recess 18 and easily aligned. Then, by pressing the mounting portion 34 from the rear side of the rear case 16 toward the accommodation recess 18, the base end side of the hook portion 60B can be elastically deformed and inserted into the mounting hole 44. When the entire hook portion 60B passes through the mounting hole 44, the column portion 60A is inserted into the mounting hole 44, and the hook portion 60B elastically returns to its original position and is engaged with the periphery of the mounting hole 44. In this manner, the mounting portion 34 can be fixed to the rear case 16 by inserting the fixing portion 60 into the mounting hole 44. As a result, the speaker unit 20 is fixed to the rear case 16 via the mounting portion 34.

[0037] According to the above configuration, the holding member 30 functions as a vibration absorbing member that absorbs vibrations transmitted from the speaker unit 20. That is, the speaker unit 20 and the rear case 16 are fixed via the mounting portion 34 formed of an elastic material, so that the vibrations transmitted from the speaker unit 20 can be absorbed by the mounting portion 34. In order to enhance the function of the holding member 30 as a vibration absorbing member, it is preferable that the holding member 30 is a member softer than the frame 28 and the front cover 24 of the speaker unit 20. In this embodiment, as an example, the holding member 30 may be formed of an elastic material such as EPDM (ethylene propylene diene rubber), CR (neoprene rubber), or Si (silicon rubber), and the frame 28 and the front cover 24 of the speaker unit 20 may be formed of a hard plastic such as ABS or PBT.

[0038] In this embodiment, the fixing portion 60 is integrally provided on the mounting portion 34, but the fixing portion 60 may not be provided on the mounting portion 34. In this case, as shown in FIG. 5, the mounting portion 34 may be fixed to the rear case 16 using a screw 70. The mounting portion 34 shown in FIG. 5 has a through hole 72 formed therein corresponding to the mounting hole 44 formed in the accommodation recess 18 of the rear case 16. The screw 70 may be inserted through the through hole 72 of the mounting portion 34 and the mounting hole 44 of the rear case 16, and screwed into a bolt (not shown) to fasten the mounting portion 34 and the rear case 16. Alternatively, the mounting hole 44 of the rear case 16 may be used as a screw hole, and the screw 70 may be screwed into the mounting hole 44 to fasten the mounting portion 34 and the rear case 16.

[0039] On the other hand, as shown in Fig. 3(B), the enclosure section 36 of the holding member 30 is formed in a box shape surrounding the rear surface 20B of the speaker unit 20, and has a function of separating sound coming from the rear surface 20B of the speaker unit 20 from sound coming from the front surface 20A of the speaker unit 20. Specifically, the enclosure section 36 is formed in a bottomed cylindrical shape that is open on the front surface 20A side of the speaker unit 20 by a peripheral wall section 36A extending from the rear end of the holding section 32 to the rear surface side of the speaker unit 20 and a bottom wall section 36B connecting the rear end of the peripheral wall section 36A. An insertion hole 46 is formed in the center of the bottom wall section 36B, through which the wiring 4 of the speaker unit 20 is inserted and which extends to the meter board 3 side (see Fig. 1). Since the insertion hole 46 is formed sufficiently small compared to the area of ​​the bottom wall portion 36B, a space portion S close to a sealed space is formed inside the enclosure portion 36 on the rear surface 20B side of the speaker unit 20. In other words, the internal space of the enclosure portion 36 constitutes a rear space (back cavity) of the speaker unit 20. Note that in Figures 2 and 3, the insertion hole 46 formed in the enclosure portion 36 is omitted from the illustration.

[0040] In the enclosure section 36, the sound coming from the rear surface 20B of the speaker unit 20 can be trapped inside and separated from the sound coming from the front surface 20A of the speaker unit 20. This makes it possible to prevent the sound coming from the front surface 20A of the speaker unit 20 and the sound coming from the rear surface 20B from interfering with each other and canceling each other out, which is advantageous for the correct reproduction of low-frequency sounds.

[0041] Furthermore, the acoustic characteristics of the speaker 1 can be adjusted by adjusting the internal volume of the back cavity of the speaker unit 20 in accordance with the dimensions and shape of the enclosure 36. That is, in this embodiment, the adjustment of the acoustic characteristics of the speaker 1 can be completed at the design stage of the speaker 1, so that a complex structure for adjusting the acoustic characteristics is not required on the attachment target side. This has the advantage of eliminating the need to adjust the acoustic characteristics on the attachment target side to which the speaker 1 is attached.

[0042] In addition, the inner diameter of the insertion hole 46 may be increased to allow the back pressure of the diaphragm 26 to escape to the rear space R of the case 10 through the insertion hole 46. Conversely, in order to improve the airtightness inside the enclosure portion 36, the insertion hole 46 may be covered with a sealant or the like. The position of the insertion hole 46 is not limited to the center of the bottom wall portion 36B, and it may be formed in the peripheral wall portion 36A or the like. In the case where the insertion hole 46 is formed in the peripheral wall portion 36A, the wiring 4 of the speaker unit 20 may be drawn out from the side surface of the holding member 30 and connected to the meter board 3. The connection portion between the connector 5 of the wiring 4 and the meter board 3 may be disposed inside the case 10, but in the case where the connector 5 of the wiring 4 is connected to the end of the meter board 3, the connection portion with the connector 5 may be exposed to the outside of the case 10. If the connection portion with the connector 5 is exposed to the outside of the case 10, the connection work between the meter board 3 and the connector 5 can be performed after the speaker 1 is installed, which is advantageous in terms of increasing the freedom of the assembly work process.

[0043] (Action and Effects) As described above, in the speaker 1 according to this embodiment, the speaker unit 20 is fixed to the rear case 16 (case 10) to which it is attached via the attachment portion 34 formed of an elastic material. This allows vibrations of the speaker unit 20 to be absorbed by the attachment portion 34, making it difficult for the vibrations to be transmitted to the attachment object. As a result, it is possible to prevent unnecessary sound from being emitted from the rear case 16 due to vibrations transmitted from the speaker unit 20. Furthermore, by integrally providing the attachment portion 34 and the holding portion 32, the number of parts is reduced, and the assembly work of the speaker 1 to the case 10 can be simplified.

[0044] 3(A) and 3(B), by forming the holding portion 32 from an elastic material, the outer periphery of the speaker unit 20 can be held by the holding portion 32 while the holding portion 32 is elastically deformed. This eliminates the need for adhesive to hold the speaker unit 20 on the holding portion 32. This also simplifies the assembly work.

[0045] In this embodiment, the rear surface 20B of the speaker unit 20 is surrounded by the enclosure portion 36. That is, the holding member 30 in this embodiment constitutes a so-called "sealed" enclosure. This allows the internal volume of the rear space (back chamber) of the speaker unit 20 to be set arbitrarily according to the dimensions and shape of the enclosure portion 36, and the acoustic characteristics of the speaker 1 to be adjusted. Therefore, the adjustment of the acoustic characteristics can be completed at the design stage of the speaker 1, and the effort of adjusting the acoustic characteristics on the case 10 side to which the speaker is to be attached can be eliminated.

[0046] In this embodiment, the outer periphery of the speaker unit 20 is held by a rectangular groove 42 formed in the holding portion 32. Here, since the holding portion 32 is made of an elastic material, the elastic restoring force of the holding portion 32 can be utilized to bring the side of the rectangular groove 42 into close contact with the outer periphery of the speaker unit 20. This ensures airtightness between the holding portion 32 and the speaker unit 20, and suppresses deterioration of sound pressure and sound quality due to air leakage.

[0047] Furthermore, linear projections 50 are formed on the side surface of the rectangular groove 42, protruding toward the outer periphery of the speaker unit 20. This allows a part of the side surface of the rectangular groove 42 to be actively brought into close contact with the outer periphery of the speaker unit 20. This ensures that a tight seal is obtained between the holding portion 32 and the speaker unit 20.

[0048] Furthermore, the holding member 30 of this embodiment is configured to be fixed to the case 10 by inserting the fixing portion 60, which is provided integrally with the mounting portion 34, into the mounting hole 44 of the rear case 16. This makes it possible to further simplify the work of assembling the speaker to the mounting target, since no tools such as a screwdriver are required when fixing the holding member 30 to the case 10.

[0049] Furthermore, the rear case 16 is provided with an accommodating recess 18 into which the holding member 30 and the speaker unit 20 are fitted. The holding member 30 fixes the mounting portion 34 to the rear case 16 in a state where the holding member 30 is fitted into the accommodating recess 18. This makes it possible to reduce unevenness on the surface of the rear case 16 and to prevent the speaker unit 20 from interfering with peripheral members of the meter device 2.

[0050] [supplementary explanation] Although an example of an embodiment of the present disclosure has been described above, the present disclosure can be modified as appropriate without departing from the spirit of the invention, and configurations in the above embodiment and each modified example can be omitted, replaced, or modified.

[0051] For example, in the above embodiment and each modified example, the speaker unit 20 is configured to include the front cover 24, but the present disclosure is not limited to this, and can also be applied to a speaker unit that does not include the front cover 24. In this case, the outer periphery of the main body 22 in the above embodiment, i.e., the outer frame portion of the frame 28, becomes the outer periphery of the speaker unit and is held by the holding portion 32.

[0052] In addition, in the above embodiment, the holding member 30 constitutes the enclosure of the speaker 1, but the present disclosure is not limited to this. For example, the holding member may be a front cover that covers the front surface of the speaker unit, and the holding portion and the mounting portion may be integrally provided on the front cover.

[0053] The holding member may be configured to include the holding portion 32 and the mounting portion 34 in the above embodiment, and may not include the enclosure portion 36. In the above embodiment, the holding member 30 is a "sealed" enclosure, but the present disclosure is not limited to this, and a holding member constituting a so-called "open-rear" enclosure by removing the bottom wall portion 36B from the enclosure portion 36 may be applied to the present disclosure. In addition, holding members constituting various enclosures, such as a flat baffle type or a bass reflex type, may be applied to the present disclosure.

[0054] In addition, in the above embodiment, the linear protrusion 50 is configured in a triangular shape, but the present disclosure is not limited thereto. As long as the linear protrusion and the outer periphery of the speaker unit are configured to be in line contact with each other, the linear protrusion may be a linear protrusion with a hemispherical cross section or a linear protrusion with a trapezoidal cross section. The number of linear protrusions 50 can be appropriately set as needed, and may be one, or may be configured to have multiple protrusions as in the above embodiment. Furthermore, the rectangular groove 42 may not be provided with the linear protrusion 50. However, by providing multiple linear protrusions, the sealing between the holding portion and the speaker unit can be more reliably obtained.

[0055] In the above embodiment, the rear case 16 as the attachment target is configured to have the accommodating recess 18 for accommodating the holding member 30, but the present disclosure is not limited to this. The rear case 16 may have only a substantially circular opening 19 formed in the flat surface thereof.

[0056] In the above embodiment, the speaker 1 is attached to the meter device 2 mounted on the vehicle, but the present disclosure is not limited to this. The object to which the speaker 1 is attached can be changed as appropriate, and for example, the object to which the speaker 1 is attached may be a door inner panel, a pillar, or a roof of the vehicle. The object to which the speaker 1 is attached may also be a case part of various devices other than the vehicle.

[0057] The disclosure of Japanese Patent Application No. 2020-198974, filed on November 30, 2020, is incorporated by reference in its entirety into this specification. All publications, patent applications, and standards mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent application, or standard was specifically and individually indicated to be incorporated by reference.

Claims

1. A speaker comprising a speaker unit and a holding member for holding the speaker unit, The holding member is made of an elastic material, The holding member is A holder that holds the speaker unit; An attachment portion that is integral with the holding portion and is fixed to an attachment target; having The holding portion has a rectangular groove formed therein for holding an outer periphery of the speaker unit, The speaker unit includes: a main body having a diaphragm, a magnetic circuit, and a frame; a front cover attached to the main body and having a front surface and a side surface; having The side surface of the front cover constitutes an outer periphery of the speaker unit. Speaker.

2. 2. The speaker according to claim 1, wherein a linear protrusion is formed on a side surface of the rectangular groove so as to protrude toward the outer periphery, and the holding portion is in close contact with the outer periphery via the linear protrusion.

3. 3. The speaker according to claim 1, wherein the mounting portion is integrally provided with a fixing portion that is inserted into a mounting hole formed in the mounting target and fixed thereto.

4. A speaker mounting structure for mounting the speaker according to any one of claims 1 to 3 to an object, comprising: The attachment target has a receiving recess formed therein, A speaker mounting structure, wherein the holding member is fitted into the accommodating recess and the mounting portion is fixed to the mounting object.

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