Vibration isolator for speaker

Abstract

To provide a vibrating body for a speaker, having a high vibrating effect.SOLUTION: The present invention provides a vibrating body 100 for a speaker. The vibrating body 100 for the speaker comprises: a housing annular part 120 that has an elastic material property, is projected to a radial direction from a speaker main body part 21 as a speaker, houses a speaker 20 having a plurality of speaker projection parts 22 in which a penetration hole 24 penetrating a screw is formed, and surrounds a peripheral direction side surface of the speaker 20; and a hook part 140 that is provided so as to be corresponded to the plurality of speaker projection parts 22, is contacted to a surface of a front side of each speaker projection part 22, and presses each speaker projection part 22 to the housing annular part 120 side.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an anti-vibration body for a speaker that prevents vibration generated from a speaker from being transmitted.

Background Art

[0002] Patent Document 1 discloses a structure for fixing a speaker. In the structure disclosed in Patent Document 1, the speaker is fixed to a speaker cabinet with screws, and an anti-vibration bush is interposed between the speaker cabinet and a front cabinet to which the speaker cabinet is attached. This anti-vibration bush reduces vibration generated from the speaker and transmitted to the front cabinet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Vibration transmission could not be sufficiently prevented only by vibration prevention with an anti-vibration bush.

[0005] The present disclosure has been made based on this situation, and an object thereof is to provide an anti-vibration body for a speaker with a high anti-vibration effect.

Means for Solving the Problems

[0006] The above object is achieved by a combination of features described in the independent claims, and the dependent claims define further advantageous specific examples. The reference signs in parentheses described in the claims indicate the correspondence with specific aspects described in the embodiments described later as one aspect, and do not limit the disclosed technical scope.

[0007] One disclosure for achieving the above object is a vibration isolator (100, 200) for a speaker that houses a speaker (20), which is made of an elastic material, and houses, as the speaker, a speaker having a plurality of speaker protrusions (22) that protrude radially from a speaker main body portion (21) and through which screws pass, an accommodating annular portion (120) that surrounds the circumferential side surface of the speaker, and hook portions (140) that are respectively provided corresponding to the plurality of speaker protrusions, contact the front surface of the speaker protrusions, and push the speaker protrusions toward the accommodating annular portion side. 、 The engaging portion includes a rib portion (143) protruding from the back surface of the front plate portion (141) of the engaging portion toward the speaker protruding portion. The rib portion contacts the surface of the speaker protruding portion and presses the speaker protruding portion toward the accommodating annular portion. Vibration isolator for a speaker. Also, one disclosure for achieving the above object is a speaker vibration isolator (100, 200) for accommodating a speaker (20), which is made of an elastic material, and accommodates a speaker having a plurality of speaker protruding portions (22) protruding radially from the speaker main body portion (21) and having through holes (24) through which screws pass, an accommodating annular portion (120) surrounding the circumferential side surface of the speaker, and an engaging portion (140) provided corresponding to the plurality of speaker protruding portions, respectively, contacting the front surface of the speaker protruding portion, and pressing the speaker protruding portion toward the accommodating annular portion. Furthermore, it includes a coupling portion (150) that couples with an attachment member (6) to which the speaker vibration isolator is attached, and at least one connecting portion (160, 170) that connects the accommodating annular portion and the coupling portion. The connecting portion is at least partially plate-shaped, and a gap is formed between the plate-shaped portion and a member adjacent in the thickness direction. The speaker vibration isolator. Also, one disclosure for achieving the above object is a speaker vibration isolator (100, 200) for accommodating a speaker (20), which is made of an elastic material, and accommodates a speaker having a plurality of speaker protruding portions (22) protruding radially from the speaker main body portion (21) and having through holes (24) through which screws pass, an accommodating annular portion (120) surrounding the circumferential side surface of the speaker, an engaging portion (140) provided corresponding to the plurality of speaker protruding portions, respectively, contacting the front surface of the speaker protruding portion, and pressing the speaker protruding portion toward the accommodating annular portion, and an accommodating bottom portion (130) facing the back surface of the speaker and forming a closed space between the accommodating annular portion and the back surface of the speaker. The end surface (122a) on the engaging portion side of the accommodating annular portion contacts the speaker. The distance (Z) between the end surface on the engaging portion side of the accommodating annular portion and the portion of the engaging portion that contacts the surface of the speaker protruding portion is shorter than the distance (X) between the surface of the speaker that contacts the accommodating annular portion and the surface that contacts the engaging portion. The speaker vibration isolator. Also, one disclosure for achieving the above object is a speaker vibration isolator (100, 200) for accommodating a speaker (20), which is made of an elastic material, As a speaker, it houses a speaker having a plurality of speaker protrusions (22) that project radially from the speaker main body (21) and in which through holes (24) through which screws pass are formed. a housing annular portion (120) that surrounds the circumferential side surface of the speaker; hook portions (140) that are respectively provided corresponding to the plurality of speaker protrusions, contact the front surface of the speaker protrusions, and push the speaker protrusions toward the housing annular portion side. Furthermore, a communication portion (132) that communicates the back surface of the speaker and the space on the side farther from the speaker than the housing annular portion; a speaker vibration isolator including an annular edge portion (205) that projects radially from the housing annular portion and contacts the surface of a mounting member to which a speaker vibration isolator is attached.

[0008] Since the vibration isolation body for the speaker is entirely made of an elastic material, it is possible to suppress the vibration generated by the speaker from being transmitted to members such as the mounting member.

[0009] In addition, the hooking portion contacts the front surface of the speaker protruding portion and pushes the speaker protruding portion toward the accommodating annular portion side, so that the vibration isolation body for the speaker holds the speaker. Since the vibration isolation body for the speaker holds the speaker in this way, the connection between the speaker and the vibration isolation body for the speaker is weaker compared to the case where the speaker is fixed by screws. Since the connection is weak, it is possible to suppress the vibration generated by the speaker from being transmitted to the mounting member or the like through the vibration isolation body for the speaker. Therefore, this vibration isolation body for the speaker has a high vibration isolation effect.

[0010] In addition, since the vibration isolation body for the speaker holds the speaker in this way, a standard speaker having a speaker protruding portion formed with a through hole for fixing with a screw can be used.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0012] <First Embodiment> Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a speaker unit 10 provided with a vibration isolator 100 for speakers according to the present embodiment. The speaker unit 10 is attached to the meter unit 5. In the present embodiment, the attachment member to which the speaker unit 10 is attached is the lower case 6 of the meter unit 5.

[0013] 〔Outline of Attachment Method〕 FIG. 2 shows a method of assembling the speaker unit 10. The speaker unit 10 is one in which the speaker 20 is housed in the vibration isolator 100 for speakers. The speaker unit 10 is housed in a unit housing portion 7 formed in the lower case 6.

[0014] The unit housing portion 7 is provided with four flat claw portions 8 that are coupled to a coupling portion 150 (see FIG. 2 etc.) provided in the vibration isolator 100 for speakers. By coupling the coupling portion 150 of the vibration isolator 100 for speakers and the flat claw portion 8, the speaker unit 10 is attached to the lower case 6 as shown in FIG. 3.

[0015] 〔Structure of Speaker 20〕 As shown in FIG. 2, the speaker 20 has a configuration including a speaker main body portion 21 and a speaker protruding portion 22. The speaker main body portion 21 has a substantially disk shape. A plurality of sound output holes 23 through which sound is output are formed in the speaker main body portion 21. The side where the sound output holes 23 are formed is the front side of the speaker 20. Hereinafter, unless otherwise specified, the "front side" is based on the speaker 20, the "surface" means the surface on the front side in the member to be targeted, and the "back surface" means the surface on the opposite side of the surface.

[0016] The speaker protruding portion 22 protrudes radially outward from the speaker main body portion 21. The surface view shape of the speaker protruding portion 22 is substantially semi-circular. Three speaker protruding portions 22 are provided, and the three speaker protruding portions 22 are arranged at positions that trisect the speaker main body portion 21 in the circumferential direction. A through hole 24 through which a screw passes is formed in each speaker protruding portion 22. However, in the present embodiment, the speaker 20 is attached to the speaker anti-vibration body 100 without using a screw.

[0017] The speaker 20 can be configured to be fixed to a predetermined member by passing a screw through the through hole 24. In this way, the speaker 20 provided with the speaker protruding portion 22 in which the through hole 24 is formed for fixing with a screw is a standard speaker and can be obtained at low cost.

[0018] The back side of the speaker 20 is shown in FIG. 4. On the front side in the axial direction of the speaker main body portion 21, a speaker flange portion 25 that protrudes radially from the speaker main body portion 21 is formed. The thickness of the speaker protruding portion 22 is the same as the thickness of the speaker flange portion 25, and it protrudes radially outward from the speaker flange portion 25.

[0019] 〔Structure of Speaker Anti-Vibration Body 100〕 Next, the structure of the vibration isolator 100 for a speaker will be described. The vibration isolator 100 for a speaker is entirely made of rubber, that is, an elastic material. As shown in FIG. 5, the vibration isolator 100 for a speaker includes a speaker housing portion 110. The speaker housing portion 110 is a portion that houses the speaker 20. The speaker housing portion 110 includes a housing annular portion 120, a housing bottom portion 130, and a hooking portion 140. Further, the vibration isolator 100 for a speaker also includes a coupling portion 150, a circumferential direction connecting portion 160, and an axial direction connecting portion 170.

[0020] The housing annular portion 120 is an annular shape that surrounds the circumferential side surface of the speaker 20. The housing bottom portion 130 is a disk shape that closes one axial end of the housing annular portion 120. The hooking portion 140 is a portion that hooks the speaker protruding portion 22 so that the speaker 20 does not come off from the vibration isolator 100 for a speaker. The coupling portion 150 is a portion that couples with the flat claw portion 8 formed on the lower case 6. The circumferential direction connecting portion 160 and the axial direction connecting portion 170 connect the housing annular portion 120 and the coupling portion 150.

[0021] Hereinafter, these will be described in detail. The housing annular portion 120 includes a front side housing portion 121 that houses the speaker flange portion 25, and a back side housing portion 122 that houses the portion of the speaker main body portion 21 where the speaker flange portion 25 is not formed.

[0022] The front side housing portion 121 is an annular shape having a diameter slightly larger than the diameter of the speaker flange portion 25. The back side housing portion 122 is an annular shape having a diameter larger than the diameter of the portion of the speaker main body portion 21 where the speaker flange portion 25 is not formed. The thickness of the back side housing portion 122 is such that the outer diameter of the back side housing portion 122 is larger than the inner diameter of the front side housing portion 121, and the inner diameter of the back side housing portion 122 is smaller than the front side housing portion 121. As a result, the end face 122a of the back side housing portion 122 on the front side housing portion 121 side is exposed inside the front side housing portion 121. By the back surface of the speaker flange portion 25 contacting this end face 122a, the axial relative position of the speaker 20 with respect to the vibration isolator 100 for a speaker is determined.

[0023] The accommodation bottom 130 is in a disk shape that closes the end of the front accommodation part 121 opposite to the back accommodation part 122. On the inner surface of the accommodation bottom 130, ribs 131 are formed.

[0024] FIG. 6 is a plan view of the speaker unit 10, and FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6. As shown in FIG. 7, when the speaker 20 is accommodated in the speaker anti-vibration body 100, an enclosure space 180 is formed by the back surface of the speaker 20, the back accommodation part 122, and the accommodation bottom 130. When the speaker 20 is accommodated in the speaker anti-vibration body 100, the end surface 122a of the accommodation annular part 120 is in contact with the back surface of the speaker flange part 25, and the enclosure space 180 is a closed space.

[0025] The hanging part 140 protrudes radially from the front accommodation part 121. Since the front accommodation part 121 is on the front side of the back accommodation part 122, the hanging part 140 is also located on the front side of the back accommodation part 122. Three hanging parts 140 are formed on the speaker anti-vibration body 100, and each hanging part 140 is provided at a position corresponding to the speaker protruding part 22 of the speaker 20. The hanging part 140 includes a front plate part 141 and a side plate part 142. The front plate part 141 faces the surface of the speaker protruding part 22. The front plate part 141 is semi-circular and flat.

[0026] The side plate part 142 is connected to the arc-shaped edge of the front plate part 141 and extends in the axial direction of the front accommodation part 121. The side plate part 142 is connected to the front accommodation part 121 at both circumferential ends of the front accommodation part 121.

[0027] FIG. 8 is a bottom view of the vibration isolator 100 for a speaker. As shown in FIG. 8, the hook portion 140 includes a rib portion 143. The rib portion 143 is rod-shaped and extends linearly in a direction toward the radial center of the speaker vibration isolator 100 from near the end point that protrudes most outwardly in the surface plate portion 141. The inner end of the rib portion 143 is located in the middle of the surface plate portion 141. Accordingly, an inner diameter side portion 141a in which the rib portion 143 is not formed is present on the surface plate portion 141 on the radial center side of the speaker. The inner end face of the rib portion 143 is preferably an inclined face so that the operation of assembling the speaker 20 to the speaker vibration isolator 100 becomes easy.

[0028] FIG. 9 is a diagram for explaining the dimensional relationship between the speaker protrusion 22 and the portion of the speaker vibration isolator 100 that faces the speaker protrusion 22. In order to explain the dimensional relationship, the speaker protrusion 22 and the speaker vibration isolator 100 are shown separated from each other.

[0029] The rib portion 143 protrudes from the back surface of the surface plate portion 141 in the direction of the speaker protrusion 22. As shown in FIG. 9, let the thickness of the speaker protrusion 22, that is, the distance between the front surface and the back surface of the speaker protrusion 22 be X, the axial distance between the end face 122a and the inner diameter side portion 141a be Y, and the axial distance between the end face 122a and the rib portion 143 be Z. The distance Z means the shortest distance between the end face 122a of the back side housing portion 122 and the portion of the hook portion 140 that contacts the front surface of the speaker protrusion 22.

[0030] As shown in FIG. 9, Z < X. Accordingly, in a state where the speaker 20 is attached to the speaker vibration isolator 100, the end face 122a of the back side housing portion 122 and the back surface of the speaker flange portion 25 are in contact. Further, the rib portion 143 contacts the front surface of the speaker protrusion 22 and presses the speaker protrusion 22 toward the housing annular portion 120 side. Note that the height of the rib portion 143 is set so that the difference between X and Z is a difference that allows the speaker vibration isolator 100 to be easily elastically deformed.

[0031] Also, X < Y. Therefore, when assembling the speaker vibration isolator 100 to the speaker 20, until the speaker protrusion 22 hits the tip of the rib portion 143, the speaker protrusion 22 can be relatively moved with respect to the hook portion 140 with little resistance. After the speaker protrusion 22 hits the inner end of the rib portion 143, the resistance during relative movement increases by the amount of the rib portion 143. However, since the speaker protrusion 22 is already partially facing the front plate portion 141, even if an operator applies force, the axial position of the speaker protrusion 22 is less likely to shift. Since the speaker vibration isolator 100 is made of an elastic material, the operator can attach the speaker 20 to the speaker vibration isolator 100 without the position of the speaker 20 shifting by applying more force than before.

[0032] The coupling portion 150 is a portion that couples with the flat claw portion 8 and couples with the flat claw portion 8 in a state of accommodating the flat claw portion 8. FIG. 5 shows a plan view of the speaker vibration isolator 100. As shown in FIG. 5, the coupling portion 150 has a configuration including an outer wall portion 151, a transverse wall portion 152, and an inner wall portion 153.

[0033] FIG. 10 is a cross-sectional view taken along the line X-X of FIG. 6. FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 6. In the description of FIGS. 10 and 11, up and down mean the up and down directions in the figure. The flat claw portion 8 formed in the lower case 6 is plate-shaped, but as shown in FIGS. 10 and 11, it has a tip portion 8a that becomes thinner toward the tip. A contact surface 8b that contacts the inner wall portion 153 is formed on the tip portion 8a. The inner wall portion 153 is shorter than the outer wall portion 151 in the axial dimension of the speaker 20, and the upper end surface of the inner wall portion 153 contacts the contact surface 8b of the flat claw portion 8. Thereby, the upward movement of the speaker vibration isolator 100 is restricted. Also, the inner wall portion 153 and the outer wall portion 151 suppress the flat claw portion 8 from moving in the radial direction of the speaker vibration isolator 100.

[0034] The lower part of the inner wall portion 153 is shaped to become thinner toward the lower end surface. Due to this shape, the flat claw portion 8 can easily enter between the inner wall portion 153 and the outer wall portion 151. The state where the flat claw portion 8 is inserted between the inner wall portion 153 and the outer wall portion 151 is the state where the speaker anti-vibration body 100 is coupled to the lower case 6.

[0035] The speaker anti-vibration body 100 is provided with four coupling portions 150. Two of these coupling portions 150 are connected to the housing annular portion 120 by the circumferential connection portion 160, and the other two coupling portions 150 are connected to the housing annular portion 120 by the axial connection portion 170.

[0036] The circumferential connection portion 160 is a thin plate shape extending in the circumferential direction from the back-side housing portion 122, and connects the back-side housing portion 122 and the coupling portion 150. There is a gap between the circumferential connection portion 160 and the back-side housing portion 122 which is a member adjacent to the circumferential connection portion 160 in its thickness direction. Therefore, the circumferential connection portion 160 can elastically deform and move in a direction approaching and separating from the back-side housing portion 122.

[0037] The axial connection portion 170 is plate-shaped, and as shown in FIG. 11, extends downward from the lower end of the front-side housing portion 121 and is connected to the inner wall portion 153 of the coupling portion 150. Also, as shown in FIG. 11, there are gaps between the axial connection portion 170 and the back-side housing portion 122 which is a member adjacent to the axial connection portion 170 in its thickness direction and between the axial connection portion 170 and the inner wall portion 153. Therefore, the axial connection portion 170 can elastically deform and move in a direction approaching and separating from the back-side housing portion 122.

[0038] 〔Explanation of anti-vibration action〕 Next, the anti-vibration action of the speaker anti-vibration body 100 will be explained. First, the speaker anti-vibration body 100 is entirely made of an elastic material. Due to this, the vibration generated by the speaker 20 is attenuated while being transmitted through the speaker anti-vibration body 100. Therefore, it is possible to suppress the vibration generated by the speaker 20 from being transmitted to members such as the lower case 6.

[0039] Further, the speaker vibration isolator 100 includes a housing annular portion 120 that surrounds the circumferential side surface of the speaker 20, and hook portions 140 provided corresponding to the three speaker protrusions 22, respectively. The hook portion 140 contacts the front surface of the speaker protrusion 22 and presses the speaker protrusion 22 toward the housing annular portion 120. By the hook portion 140 pressing the speaker protrusion 22 toward the back-side housing portion 122, the speaker vibration isolator 100 holds the speaker 20.

[0040] Since the speaker vibration isolator 100 holds the speaker 20 in this way, the connection between the speaker 20 and the speaker vibration isolator 100 is weaker compared to the case where the speaker 20 is fixed by screws. Because the connection is weak, it is possible to suppress the vibration generated by the speaker 20 from being transmitted to members such as the lower case 6 through the speaker vibration isolator 100. Therefore, this speaker vibration isolator 100 has a high vibration isolation effect.

[0041] In addition, since the speaker vibration isolator 100 holds the speaker 20 in this way, a standard speaker 20 having a speaker protrusion 22 in which a through hole 24 is formed for fixing with screws can be used.

[0042] The circumferential connection portion 160 and the axial connection portion 170 that connect between the connection portion 150 and the speaker housing portion 110 of the speaker vibration isolator 100 are plate-shaped. In addition, there are gaps between these circumferential connection portion 160 and axial connection portion 170 and the members adjacent to them in the thickness direction. Therefore, when the vibration of the speaker 20 is transmitted to the circumferential connection portion 160 and the axial connection portion 170, the circumferential connection portion 160 and the axial connection portion 170 vibrate. As a result, at least a part of the vibration of the speaker 20 is absorbed by the circumferential connection portion 160 and the axial connection portion 170. Also by this, it is possible to suppress the vibration generated by the speaker 20 from being transmitted to the lower case 6 or the like. Thereby, the speaker vibration isolator 100 has an even higher vibration isolation effect.

[0043] Furthermore, in the vibration isolator 100 for a speaker, the enclosure space 180 on the back side of the speaker 20 is a closed space. Therefore, it is possible to suppress the leakage of the out-of-phase sound to the outside of the enclosure space 180. As a result, it is possible to suppress the sound generated by the out-of-phase sound being transmitted to the periphery of the speaker 20 and the vibration that may be generated by the sound.

[0044] 〔Other effects〕 The circumferential connecting portion 160, the axial connecting portion 170, and the engaging portion 140 are arranged at different positions in the circumferential direction in the vibration isolator 100 for a speaker. And the radial positions of these circumferential connecting portion 160, axial connecting portion 170, and engaging portion 140 are substantially equal. With this arrangement, the radial dimension of the vibration isolator 100 for a speaker can be made smaller compared to the case where either the circumferential connecting portion 160 or the axial connecting portion 170 is arranged at a position overlapping the engaging portion 140 in the circumferential direction. When mounting the speaker unit 10 on the meter unit 5, the mounting space is often limited, so this configuration makes it easier to mount the speaker unit 10 on the meter unit 5.

[0045] Also, the circumferential connecting portion 160 and the axial connecting portion 170 are used in combination as the connecting portions. As a result, it becomes easier to arrange all the connecting portions at positions different from the engaging portion 140 in the circumferential direction compared to the case where only the circumferential connecting portion 160 is provided as the connecting portion.

[0046] In the speaker unit 10 of the present embodiment, the distance Z shown in FIG. 9 is made shorter than the distance X. With this configuration, it is possible to surely push the entire speaker 20 including the speaker protrusion 22 by the engaging portion 140 toward the back side housing portion 122 side. Therefore, the adhesion between the end face 122a of the back side housing portion 122 and the back surface of the speaker flange portion 25 can be enhanced, and the airtightness of the enclosure space 180 can be enhanced. By enhancing the airtightness of the enclosure space 180, it is possible to further suppress the sound generated by the out-of-phase sound being transmitted to the periphery of the speaker 20.

[0047] In the speaker unit 10 of the present embodiment, the distance Y shown in FIG. 9 is made longer than the distance X. This makes it easier to assemble the speaker 20 to the speaker vibration isolator 100.

[0048] <Second Embodiment> Next, the second embodiment will be described. In the following description of this second embodiment, elements having the same reference numerals as those used so far are the same as the elements with the same reference numerals in the previous embodiments, unless otherwise specified. Also, when only a part of the configuration is described, the previously described embodiments can be applied to other parts of the configuration.

[0049] FIG. 12 is a perspective view showing the back surface of the speaker vibration isolator 200 of the second embodiment. As shown in FIG. 12, a communication portion 132 is formed in the accommodation bottom portion 130 of the speaker vibration isolator 200. The communication portion 132 of the present embodiment is a hole formed in the accommodation bottom portion 130 and penetrating the accommodation bottom portion 130.

[0050] Since the communication portion 132 is formed in the accommodation bottom portion 130, in the second embodiment, the enclosure space 180 does not become a closed space. When the enclosure space 180 is small, the bass may not extend. As a countermeasure, the communication portion 132 is formed to communicate the enclosure space 180 with the space adjacent to the accommodation bottom portion 130 with the accommodation bottom portion 130 interposed therebetween. There is no limit to the number of communication portions 132. For example, the communication portion 132 may be one. There are also no restrictions on the size and position of the communication portion 132. If the communication portion 132 is enlarged to the same size as the accommodation bottom portion 130, the state without the accommodation bottom portion 130 is obtained.

[0051] FIG. 13 is a view showing the surface of the speaker vibration isolator 200. In the speaker vibration isolator 200, the coupling portion 150 is fixed to the accommodation annular portion 120 without passing through the connecting portion. As shown in FIGS. 12 and 13, the speaker vibration isolator 200 includes an annular edge portion 205.

[0052] FIG. 14 is a plan view showing a state in which the speaker 20 is held by the speaker vibration isolator 200. FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14. FIG. 16 is a cross-sectional view taken along line XVI-XVI of FIG. 14.

[0053] The annular edge portion 205 protrudes radially outward from the accommodating annular portion 120. Specifically, the annular edge portion 205 protrudes radially outward from a portion closer to the back accommodating portion 122 in the front accommodating portion 121 of the accommodating annular portion 120. The annular edge portion 205 protrudes radially outward from the side plate portion 142 of the engaging portion 140 at the portion where the engaging portion 140 is formed. The shape of the annular edge portion 205 is annular.

[0054] As shown in FIGS. 15 and 16, the tip of the annular edge portion 205 is in contact with the surface of the lower case 6. Also, the annular edge portion 205 becomes thinner toward the radially outer side.

[0055] As shown in FIG. 16, the speaker vibration isolator 200 includes a blocking wall portion 215. The blocking wall portion 215 is also shown in FIG. 12. The blocking wall portion 215 extends from the outer periphery of the accommodating annular portion 120 as shown in FIG. 16. More specifically, the blocking wall portion 215 extends from the end face 122a of the back accommodating portion 122 to the outer periphery. And the tip of the blocking wall portion 215 is in contact with the lower case 6. Also, in the speaker vibration isolator 200 of the second embodiment, the tip of the side plate portion 142 of the engaging portion 140 is also in contact with the lower case 6.

[0056] Since the speaker vibration isolator 200 having this structure is formed with the communication portion 132, as indicated by the dashed arrows in FIGS. 15 and 16, the sound generated by the speaker 20 passes through the communication portion 132 from the back of the speaker 20 and leaks out to the outside of the enclosure space 180.

[0057] However, the speaker vibration isolator 200 includes an annular edge portion 205. The annular edge portion 205 closes the space between the accommodation annular portion 120 and the lower case 6. Therefore, it is possible to suppress the sound leaking out of the enclosure space 180 from being transmitted from between the accommodation annular portion 120 and the lower case 6 to the surface side of the lower case 6.

[0058] Further, the annular edge portion 205 becomes thinner toward the outer side in the radial direction. With this structure, when sound is transmitted, the annular edge portion 205 is likely to vibrate and absorb the sound. Therefore, it becomes difficult for the sound to be transmitted to the surface side of the lower case 6.

[0059] In addition, the speaker vibration isolator 200 includes a blocking wall portion 215. When the blocking wall portion 215 is not provided, as shown by the broken-line arrow in FIG. 16, the through-hole 24 and the enclosure space 180 communicate with each other through the communication portion 132. Therefore, the sound generated by the speaker 20 leaks out from the through-hole 24 as shown by the broken-line arrow in FIG. 16.

[0060] However, in the speaker vibration isolator 200, the blocking wall portion 215 blocks the space between the through-hole 24 and the back space of the speaker 20. Therefore, it is possible to suppress the sound generated by the speaker 20 from leaking out of the through-hole 24.

[0061] Further, the blocking wall portion 215 becomes thinner toward the lower case 6. With this structure, when sound is transmitted, the blocking wall portion 215 is likely to vibrate and absorb the sound. Therefore, it becomes difficult for the sound to be transmitted to the surface side of the lower case 6.

[0062] As described above, although the embodiments have been described, the disclosed technology is not limited to the above-described embodiments, and the following modification examples are also included in the disclosed scope, and various other modifications can be made without departing from the gist.

[0063] For example, the number of the flat claw portions 8 may be other than 4. Instead of the rib 131, or in addition to the rib 131, pins that contact the back surface of the speaker 20 may be formed on the accommodation bottom portion 130.

Description of Symbols

[0064] 5: Meter unit 6: Lower case (mounting member) 7: Unit housing part 8: Flat claw part 8a: Tip part 8b: Contact surface 10: Speaker unit 20: Speaker 21: Speaker main body part 22: Speaker protruding part 23: Sound output hole 24: Through hole 25: Speaker flange part 100: Vibration isolator for speaker 110: Speaker housing part 120: Housing annular part 121: Front side housing part 122: Back side housing part 122a: End face 130: Housing bottom part 131: Rib 132: Communication part 140: Hanging part 141: Front plate part 141a: Inner diameter side part 142: Side plate part 143: Rib part 150: Coupling part 151: Outer wall part 152: Cross wall part 153: Inner wall part 160: Circumferential direction connection part 170: Axial direction connection part 180: Enclosure space 200: Vibration isolator for speaker 205: Annular edge part 215: Partition wall part

Claims

1. A vibration isolator (100, 200) for a speaker that houses a speaker (20), which is made of an elastic material, and houses the speaker having a plurality of speaker protrusions (22) that protrude radially from a speaker main body portion (21) and have through holes (24) through which screws pass, a housing annular portion (120) that surrounds the circumferential side surface of the speaker, and hook portions (140) that are respectively provided corresponding to the plurality of speaker protrusions, contact the front surface of the speaker protrusions, and push the speaker protrusions toward the housing annular portion, wherein the hook portion includes rib portions (143) that protrude from the back surface of a front plate portion (141) of the hook portion toward the speaker protrusions, and the rib portions contact the surface of the speaker protrusions and push the speaker protrusions toward the housing annular portion; a vibration isolator for a speaker.

2. A vibration isolator (100, 200) for a speaker that houses a speaker (20), which is made of an elastic material, and houses the speaker having a plurality of speaker protrusions (22) that protrude radially from a speaker main body portion (21) and have through holes (24) through which screws pass, a housing annular portion (120) that surrounds the circumferential side surface of the speaker, and hook portions (140) that are respectively provided corresponding to the plurality of speaker protrusions, contact the front surface of the speaker protrusions, and push the speaker protrusions toward the housing annular portion, further comprising a coupling portion (150) that couples with a mounting member (6) to which the vibration isolator for a speaker is attached, and at least one connecting portion (160, 170) that connects the housing annular portion and the coupling portion, wherein at least a part of the connecting portion is plate-shaped, and a gap is formed between the plate-shaped portion and a member adjacent in the thickness direction; a vibration isolator for a speaker.

3. The vibration isolator for a speaker according to Claim 2, wherein at least one of the connecting portions (160) extends in the circumferential direction of the housing annular portion; a vibration isolator for a speaker.

4. The vibration isolator for a speaker according to Claim 2 or 3, wherein at least one of the connecting portions extends in the axial direction of the vibration isolator for a speaker; a vibration isolator for a speaker.

5. The vibration isolator for a speaker according to any one of Claims 2 to 4, wherein the connecting portion and the hook portion are arranged at different positions in the circumferential direction; a vibration isolator for a speaker.

6. The vibration isolator for a speaker according to claim 5, wherein a plurality of the connecting portions are provided; at least one of the connecting portions extends in the circumferential direction of the accommodating annular portion; the other connecting portions extend in the axial direction of the vibration isolator for a speaker; all of the connecting portions are arranged at positions different in the circumferential direction from the hooking portion, the vibration isolator for a speaker.

7. The vibration isolator for a speaker according to any one of claims 2 to 6, wherein it includes a housing bottom portion (130) that faces the back surface of the speaker and forms a closed space between the housing bottom portion and the back surface of the speaker together with the accommodating annular portion, the vibration isolator for a speaker.

8. A vibration isolator for a speaker (100, 200) that houses a speaker (20), which is made of an elastic material, and houses the speaker having a plurality of speaker protrusions (22) that protrude radially from the speaker main body portion (21) and through holes (24) through which screws pass; an accommodating annular portion (120) that surrounds the circumferential side surface of the speaker; hooking portions (140) that are respectively provided corresponding to the plurality of speaker protrusions, contact the front surface of the speaker protrusion, and push the speaker protrusion toward the accommodating annular portion side; and a housing bottom portion (130) that faces the back surface of the speaker and forms a closed space between the housing bottom portion and the back surface of the speaker together with the accommodating annular portion, wherein an end surface (122a) on the hooking portion side of the accommodating annular portion is in contact with the speaker; a distance (Z) between the end surface on the hooking portion side of the accommodating annular portion and a portion of the hooking portion that contacts the surface of the speaker protrusion is shorter than a distance (X) between a surface of the speaker that contacts the accommodating annular portion and a surface of the speaker that contacts the hooking portion in the speaker, the vibration isolator for a speaker.

9. The vibration isolator for a speaker according to claim 8, wherein the hooking portion includes a front plate portion (141) that is flat and faces the surface of the speaker protrusion, and rib portions (143) that protrude from the front plate portion in the direction of the speaker protrusion; the front plate portion has an inner diameter side portion (141a) on the radially central side of the speaker where the rib portions are not formed; a distance (Y) in the axial direction of the speaker between the inner diameter side portion and the end surface of the accommodating annular portion is longer than a distance (X) between a surface of the speaker that contacts the accommodating annular portion and a surface of the speaker that contacts the hooking portion in the speaker, the vibration isolator for a speaker.

10. A vibration isolator (100, 200) for a speaker that houses a speaker (20), which is made of an elastic material, and houses the speaker having a plurality of speaker protrusions (22) that protrude radially from a speaker main body portion (21) and have through holes (24) through which screws pass, an accommodating annular portion (120) that surrounds the circumferential side surface of the speaker, and is provided corresponding to each of the plurality of speaker protrusions, and includes a hooking portion (140) that contacts the front surface of the speaker protrusion and pushes the speaker protrusion toward the accommodating annular portion side, furthermore, a communication portion (132) that communicates the back surface of the speaker with a space farther from the speaker than the accommodating annular portion, and an annular edge portion (205) that protrudes radially from the accommodating annular portion and contacts the surface of a mounting member to which the speaker vibration isolator is attached, A vibration isolator for a speaker comprising the above.

11. The vibration isolator for a speaker according to Claim 10, wherein the annular edge portion becomes thinner toward the radially outer side.

12. The vibration isolator for a speaker according to Claim 10 or 11, comprising a blocking wall portion (215) that extends from the outer periphery of the accommodating annular portion and whose tip contacts the mounting member to block between the through hole and the back space of the speaker.

13. The vibration isolator for a speaker according to Claim 12, wherein the blocking wall portion becomes thinner toward the mounting member side.

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