Sounder

Abstract

To provide a sounder that prevents water from adhering to a sounder body.SOLUTION: In a sounder, a partition 22 includes a frame-shaped opening vertical wall 231 that surrounds a through hole and protrudes toward a cover 3, and the opening vertical wall 231 has a base surface 232 as a step surface on the portion opposite the through hole side, and when the portion on the tip side of the base surface 232 in the protruding direction is defined as an opening tip portion 233, a slit 234 is formed only in the opening tip portion 233, and the slit 234 is formed in the portion of the opening vertical wall 231 that can become the earth side in the top-to-bottom direction when connected to the connected portion.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present disclosure relates to a sound emitter.

Background Art

[0002] Conventionally, for example, Patent Document 1 has proposed a vehicle sound emitter used for a vehicle alarm, a vehicle approach notification device, etc. Specifically, in this sound emitter, a through hole is formed in a partition wall provided inside a base cylinder portion, and a sounding body is disposed so as to close the through hole. Further, the base cylinder portion is provided with a cover having a sound emission hole for emitting sound formed at one opening portion. Furthermore, the base cylinder portion is provided with a connector that protrudes outward from the outer peripheral surface of the base cylinder portion and is connected to an external connected portion.

[0003] Also, in this sound emitter, a frame-shaped standing wall protruding toward the cover side is formed in a portion of the partition wall located around the through hole. And a slit is formed in a portion of this standing wall located on the connector side.

[0004] Such a sound emitter is arranged and used such that the connector is on the ground side in the vertical direction. And when water enters into the standing wall, such a sound emitter discharges the water from the slit and suppresses the water from adhering to the sounding body.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the case where the mounting angle of the above-described sound emitter changes (i.e., when the connector is not used with the ground side down), water that has entered the vertical wall cannot be discharged, and there is a possibility that water will adhere to the sounding body. Further, in the above-described sound emitter, although water in the vertical wall can be discharged by forming a slit, when the mounting angle changes, water may enter the vertical wall from the slit due to the formation of the slit, and there is a possibility that water will adhere to the sounding body. Currently, there is a need for a sounding body that can further suppress the adhesion of water to the sounding body.

[0007] An object of the present disclosure is to provide a sound emitter that can suppress the adhesion of water to a sounding body.

Means for Solving the Problem

[0008] According to one aspect of the present disclosure, there is provided a sound emitter including a base cylinder portion (21) having a partition wall (22) in which a through hole (23) is formed, a connector (27) provided in the base cylinder portion and protruding to the side opposite to the base cylinder portion side, a housing (1) including the connector, a sounding body (6) disposed inside the housing so as to close the through hole, a shielding plate (24) disposed inside the housing in a state of facing the sounding body, and a cover (3) disposed on the side opposite to the sounding body with the shielding plate interposed therebetween, provided at an opening at one end side of the base cylinder portion, and having a sound emitting hole (84) formed at a position facing the shielding plate. The partition wall surrounds the through hole and has a frame-shaped opening vertical wall (231) protruding toward the cover side. The opening vertical wall has an earth table surface (232) as a stepped surface at a portion on the side opposite to the through hole side. When a portion on the tip side in the protruding direction from the earth table surface is defined as an opening tip portion (233), a slit (234) is formed only at the opening tip portion. The slit is formed at a portion of the opening vertical wall that can be on the ground side in the vertical and horizontal direction (Db) when the connector is connected to the connected portion.

[0009] According to this, on the opening vertical wall, a slit is formed at the opening tip portion on the tip side in the protruding direction from the soil table surface, which is a portion that can be the ground side. For this reason, it is easy to discharge the water that has entered the opening vertical wall, and it is possible to suppress the intrusion of water from the outside of the opening vertical wall. Therefore, it is possible to suppress the adhesion of water to the sounding body.

[0010] Note that the reference numerals in parentheses attached to each component etc. indicate an example of the correspondence relationship between the component etc. and the specific components etc. described in the embodiments described later.

Brief Explanation of 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 13A

Figure 13B

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each of the following embodiments, parts that are identical or equivalent to each other will be described with the same reference numerals.

[0013] (First Embodiment) The sound emitter SP of the first embodiment will be described with reference to FIGS. 1 to 12. Note that the sound emitter SP of this embodiment is preferably installed, for example, outside the passenger compartment of an automobile and used to generate an alarm sound.

[0014] As shown in FIGS. 1 to 6, the sound emitter SP includes a housing 1 having a space formed therein, a plurality of terminals 5, a sounding body 6, a substrate 7, and the like. In this embodiment, six terminals 5 are provided.

[0015] As shown in FIGS. 5 and 6, the housing 1 includes a base 2, a first cover 3, a second cover 4, etc., and each is formed of a resin molded product. When one direction is defined as the axial direction Da, the first cover 3 is disposed on one side of the base 2 in the axial direction Da, and the second cover 4 is disposed on the other side of the base 2 in the axial direction Da. In FIG. 5, the direction toward the left side of the paper surface is one side of the axial direction Da, and the direction toward the right side of the paper surface is the other side of the axial direction Da. The axial direction Da also coincides with the arrangement direction of the first cover 3, the base 2, and the second cover 4. The sounding body 6 and the substrate 7 are accommodated in the housing 1.

[0016] The base 2 includes a substantially square cylindrical base tube portion 21. And a plate-shaped first cover 3 that covers the opening on one side in the axial direction Da (that is, the opening on the end side) of the base tube portion 21 is fitted. Also, a plate-shaped second cover 4 is airtightly joined by adhesion to the opening on the other side in the axial direction Da of the base tube portion 21. Note that the axial direction Da of the present embodiment is also the direction along the axis of the base tube portion 21.

[0017] As shown in FIGS. 2 to 4, a plurality of protrusions 2a are formed on the outer peripheral surface of the base 2. Also, a hook 3a protruding toward the second cover 4 side is formed on the outer edge portion of the first cover 3. A hook 4a protruding toward the first cover 3 side is formed on the outer edge portion of the second cover 4. And the base 2, the first cover 3, and the second cover 4 are also fixed by engaging these plurality of protrusions 2a with the hooks 3a and 4a. Further, a bracket mounting portion 2b for mounting an external bracket is provided on the outer peripheral surface of the base 2.

[0018] As shown in FIGS. 5 and 6, the space inside the base tube portion 21 is divided into two parts, one side in the axial direction Da and the other side in the axial direction Da, by a partition wall 22 provided in the base tube portion 21. That is, the inside of the housing 1 is divided into one side space formed by the base tube portion 21, the partition wall 22, and the first cover 3, and the other side space formed by the base tube portion 21, the partition wall 22, and the second cover 4.

[0019] A circular through hole 23 is formed in the inner peripheral portion of the partition wall 22. Note that the through hole 23 is formed such that the axial direction of the through hole 23 coincides with the axial direction Da. Hereinafter, the direction around the axial direction (that is, the axial direction Da) of the through hole 23 is also referred to as the circumferential direction, and the radial direction with respect to the axial direction is simply referred to as the radial direction.

[0020] And a sounding body 6 is disposed in the through-hole 23 so as to close the through-hole 23. Specifically, the partition wall 22 is formed such that the opening end of the through-hole 23 protrudes toward the first cover 3. Further, the partition wall 22 has the tip of the protruding portion folded inward. And the sounding body 6 is disposed so as to be fitted into the recess and close the through-hole 23.

[0021] Here, as described above, the opening end of the through-hole 23 is formed so as to protrude toward the first cover 3. Hereinafter, as shown in FIGS. 5, 6, 8, and 9, a portion of the partition wall 22 formed to protrude toward the first cover 3 is defined as an opening standing wall 231. And the opening standing wall 231 is formed in a substantially annular shape along the circumferential direction of the through-hole 23. Note that FIG. 9 corresponds to a cross-sectional view taken along line IX-IX in FIG. 8, and ribs 33 and the like, which will be described later, are omitted.

[0022] The opening standing wall 231 has a base surface 232 which is a stepped surface formed on the side surface side of the portion on the side opposite to the through-hole 23 side. The base surface 232 is set to a height located on one side in the axial direction Da with respect to the tip surface 33a of a rib portion 33, which will be described later, as shown in FIG. 7. That is, the base surface 232 is configured to be located on the first cover 3 side with respect to the tip surface 33a of the rib portion 33, which will be described later.

[0023] Furthermore, as shown in FIGS. 5, 8, and 9, in the opening standing wall 231, when a portion on one side in the axial direction Da from the base surface 232 is defined as an opening tip portion 233, a plurality of slits 234 are formed in the opening tip portion 233. Note that the slits 234 are formed only in the opening tip portion 233 of the opening standing wall 231, and are not formed in the portion on the other side in the axial direction Da from the base surface 232 of the opening standing wall 231 (that is, the root portion of the opening standing wall 231). The position where the slits 234 are formed in the opening tip portion will be described later.

[0024] As shown in FIGS. 5 and 6, a shielding plate 24 is disposed on one side of the axial direction Da with respect to the sounding body 6. The shielding plate 24 is for suppressing water or the like attached to the surface of the first cover 3 from reaching the sounding body 6 and preventing damage to the sounding body 6 due to the attachment of water or the like. The shielding plate 24 includes a hollow truncated cone-shaped outer peripheral portion 241 that extends on one side of the axial direction Da and a dome-shaped inner peripheral portion 242 that protrudes on one side of the axial direction Da. And as shown in FIG. 8, the shielding plate 24 is connected to the opening vertical wall 231 of the partition wall 22 by a plurality of support columns 244 extending in the radial direction.

[0025] In this embodiment, four support columns 244 are formed at intervals in the circumferential direction. And each support column 244 is connected to a portion of the opening vertical wall 231 different from the portion where the slit 234 is formed. Note that the number of the support columns 244 is not limited to this, and may be three or less or five or more.

[0026] Further, as shown in FIGS. 8 and 10, each support column 244 of this embodiment is formed with a tapered groove portion 245 in which a portion on the side of the first cover 3 is open and the interval between opposite side surfaces becomes narrower toward the bottom side. In other words, each support column 244 of this embodiment is formed with a groove portion 245 having a V-shaped cross section with an open portion on the side of the first cover 3. Also, each support column 244 of this embodiment is formed with a tapered convex portion 246 on the portion on the side of the second cover 4, and the interval between opposite side surfaces becomes narrower toward the second cover 4. In other words, each support column 244 of this embodiment is formed with a tapered convex portion 246 that protrudes toward the side opposite to the first cover 3 on the portion opposite to the first cover 3 side, and the interval between opposite side surfaces becomes narrower toward the tip portion in the protruding direction. That is, each support column 244 of this embodiment has a V-shaped cross section as a whole.

[0027] And the sound generated by the sounding body 6 travels outside the housing 1 through the space between the opening vertical wall 231 of the partition wall 22 and the shielding plate 24. The sound passage formed by the partition wall 22 and the shielding plate 24 is defined as a sound passage 81.

[0028] The shielding plate 24 is configured to amplify the sound pressure of the sound passing through the sound passage 81. Specifically, a cylindrical portion 243 protruding from the outer edge of the inner peripheral portion toward the first cover 3 is formed on the shielding plate 24. And a resonance chamber 82 is formed by the outer peripheral portion 241 of the shielding plate 24, the cylindrical portion 243, and the first cover 3. Also, a resonance chamber 83 is formed by the inner peripheral portion 242 of the shielding plate 24, the cylindrical portion 243, and the first cover 3.

[0029] Also, as shown in FIG. 8, a through hole 23 and a ventilation hole 25 are formed in the partition wall 22 at a location away from the sounding body 6. The ventilation hole 25 is for suppressing the generation of a pressure difference due to a temperature change between the space formed by the base cylinder portion 21, the partition wall 22, and the first cover 3 and the space formed by the base cylinder portion 21, the partition wall 22, and the second cover 4. A ventilation film 26 is stretched over the ventilation hole 25. The ventilation film 26 is configured to allow air to pass through and block water.

[0030] As shown in FIGS. 1, 4, and 5, the first cover 3 has a substantially square shape corresponding to the base cylinder portion 21. And a circumferential through hole 31 is formed at a position corresponding to the outer peripheral portion of the shielding plate 24 on the inner peripheral portion of the first cover 3. The through hole 31 is for discharging the sound whose sound pressure has been amplified by the resonance chambers 82 and 83 through the sound passage 81 to the outside of the housing 1.

[0031] As shown in FIGS. 1 and 4, the inside and the outside of the through hole 31 are connected by a beam-shaped connecting portion 32. A plurality of connecting portions 32 are formed, and the through hole 31 is divided into a plurality by the plurality of connecting portions 32. The plurality of divided through holes 31 constitute a sound emission hole 84 for opening the space inside the housing 1 to the atmosphere and discharging the sound generated by the sounding body 6 to the outside.

[0032] As shown in FIGS. 5, 6, 8, and 11, a cylindrical rib portion 33 that protrudes toward the other side in the axial direction Da is formed on the outer peripheral portion of the first cover 3. The rib portion 33 is disposed so as to protrude into a space surrounded by the base cylinder portion 21, the partition wall 22, and the side wall of the first cover 3. Note that, of the space surrounded by the base cylinder portion 21, the partition wall 22, and the side wall of the first cover 3, the inner portion of the rib portion 33 is the resonance chamber 85, and the outer portion of the rib portion 33 is the resonance chamber 86.

[0033] Then, the sound generated by the sounding body 6 passes through the sound passage 81, and the sound pressure is amplified by the resonance chambers 82, 83 and the resonance chambers 85, 86, and is emitted to the outside of the housing 1 through the sound emission hole 84.

[0034] As shown in FIG. 7, the height of the rib portion 33 of the present embodiment is adjusted such that the tip surface 33a in the protruding direction is located on the other side in the axial direction Da than the table surface 232. Further, as shown in FIGS. 8 and 11, a slit 331 and a slope portion 332 are formed in the rib portion 33. The slit 331 is formed so as to divide the annular rib portion 33. As shown in FIG. 12, the slope portion 332 has a tapered shape in which the inner peripheral surface 332a widens outward toward the other side in the axial direction Da. In the present embodiment, the slope portion 332 of the rib portion 33 has a tapered shape that tapers toward the tip surface 33a in the protruding direction, so that the inner peripheral surface 332a widens outward toward the other side in the axial direction Da. The locations where the slit 331 and the slope portion 332 are formed will be described later.

[0035] Further, the first cover 3 is provided with a bracket protection portion 3b for protecting the bracket attachment portion 2b on the outer peripheral surface. As shown in FIG. 12, the inner peripheral surface 31b of the bracket protection portion 3b is formed so as to widen outward toward the other side in the axial direction Da.

[0036] On the outside of the base cylinder portion 21, as shown in FIG. 5, a connector 27 having a substantially square cylinder shape is formed. The connector 27 extends so as to protrude from the base cylinder portion 21 in a direction orthogonal to the axial direction Da. In the present embodiment, the connector 27 is disposed on the lower surface of the base cylinder portion 21 and opens downward in the housing 1.

[0037] Inside the connector 27, a terminal 5 is disposed. The terminal 5 electrically connects the substrate 7 disposed in the housing 1 and an external circuit of the housing 1. The terminal 5 penetrates the side wall of the base cylinder portion 21, and the portion of the terminal 5 exposed from the inner wall surface of the base cylinder portion 21 is covered at the base by an adhesive 91 and fixed to the base cylinder portion 21.

[0038] The portion of the terminal 5 exposed from the inner wall surface of the base cylinder portion 21 and the adhesive 91 protrudes toward the substrate 7 disposed in the housing 1. This protruding portion is defined as a terminal protruding portion 51.

[0039] The substrate 7 is disposed in a space formed by the base cylinder portion 21, the partition wall 22, and the second cover 4, at a portion closer to the second cover 4 than the base of the terminal protruding portion 51, and the terminal protruding portion 51 protrudes toward the second cover 4. Then, the terminal 5 is connected to the substrate 7 by a joining member 101 such as solder at the tip of the terminal protruding portion 51.

[0040] The portion between the portion of the terminal 5 penetrating the base cylinder portion 21 and the terminal protruding portion 51 is formed in a bent shape. This bent portion is defined as a terminal bent portion 52. In the present embodiment, the terminal bent portion 52 is exposed from the inner wall surface of the base cylinder portion 21 and covered with the adhesive 91.

[0041] Terminal 5 is in an L shape, consisting of a linear part passing through the base cylinder part 21, a terminal bending part 52 that bends vertically or substantially vertically, and a linear terminal protruding part 51. In this embodiment, as shown in FIG. 3, six terminals 5 are arranged on the connector 27, and each of the six terminals 5 is in an L shape with a terminal protruding part 51 and a terminal bending part 52.

[0042] The sounding body 6 has a frame in a substantially stepped cylindrical shape, and although detailed description is omitted, as shown in FIGS. 5 and 6, a diaphragm 62 is arranged on one side in the axial direction Da of the frame, and a driving part is arranged on the other side in the axial direction Da of the frame. Then, the sounding body 6 generates sound when the diaphragm 62 is vibrated by the driving part.

[0043] Also, as shown in FIG. 5, the sounding body 6 has a lead wire 64 connected to the driving part and a terminal fitting 65 connected to the lead wire 64 and further connected to the substrate 7.

[0044] As shown in FIGS. 5 and 6, the substrate 7 is arranged in the space on the other side in the axial direction Da than the sounding body 6, that is, the space formed by the base cylinder part 21, the partition wall 22, and the second cover 4. And a circuit for driving the driving part is formed on the substrate 7 by resistors, capacitors, etc. not shown. These circuit components such as resistors and capacitors are arranged between the substrate 7, the partition wall 22, and the sounding body 6.

[0045] The driving circuit on the substrate 7 is connected to the driving part of the sounding body 6 via the lead wire 64 and the terminal fitting 65. Also, this driving circuit is connected to an ECU or the like of a vehicle as an external circuit through the terminal 5. When a signal is transmitted from the ECU or the like to the driving circuit through the terminal 5, sound is generated from the sounding body 6 according to this signal. Note that ECU is an abbreviation for Electronic Control Unit.

[0046] The substrate 7 is formed with through-holes for passing the terminal fitting 65 and the terminal 5. The terminal fitting 65 and the terminal 5 are connected to the drive circuit on the substrate 7 by joining members 101 and 102 such as solder in these through-holes.

[0047] Also, the substrate 7 is formed with through-holes for passing the substrate mounting portion 28 formed on the base 2. The substrate mounting portion 28 is a member for fixing the substrate 7 inside the housing 1, and as shown in FIGS. 5 and 6, it protrudes from the partition wall 22 toward the second cover 4.

[0048] The substrate mounting portions 28 are arranged one by one at the four corners of the base cylinder portion 21. In the present embodiment, the substrate mounting portion 28 has a tapered stepped cylindrical shape. By passing the substrate mounting portion 28 through the through-hole of the substrate 7, the substrate 7 abuts against the stepped portion and is positioned. Then, in the state where the substrate 7 is positioned, the tip of the substrate mounting portion 28 is melted by heat and caulked, so that the substrate 7 is fixed to the substrate mounting portion 28.

[0049] The above is the configuration of the sound emitter SP in the present embodiment. When such a sound emitter SP is mounted on a vehicle, the connector 27 is connected to the connected portion on the vehicle side and mounted. At this time, the sound emitter SP is generally arranged as shown in FIGS. 13A and 13B. Specifically, when the sound emitter SP passes through the connector 27 and the angles formed by the virtual line along the extending direction of the connector 27 and the vertical direction Db are defined as the mounting angles θ1 and θ2, it is arranged within the range of -90° ≤ θ1, θ2 ≤ 90°. Note that the mounting angles θ1 and θ2 are the angles when the sound emitter SP is tilted in the front-rear direction of the vehicle or in the left-right direction intersecting the front-rear direction when the sound emitter SP is mounted on the vehicle.

[0050] And since the sound emitter SP in the present embodiment can be arranged in this way, as shown in FIG. 8, the slit 234 formed in the opening vertical wall 231 is formed in a portion that can be the ground side when the sound emitter SP is connected to the connected portion. That is, the slit 234 is formed not only in the portion of the opening vertical wall 231 on the connector 27 side but also in the portion rotated 90° in the circumferential direction from the portion of the opening vertical wall 231 located closest to the connector 27 side. Further, the slit 234 is formed so as to sandwich the portion connected to the support column 244 in the portion of the opening vertical wall 231 that can be the ground side and is connected to the support column 244.

[0051] Similarly, as shown in FIGS. 8 and 11, the slits 331 and the slope portions 332 formed in the rib portion 33 are formed in portions that can be the ground side when the sound emitter SP is connected to the connected portion. At this time, when comparing the slit 331 and the slope portion 332, water flows more easily through the slit 331 where the rib portion 33 is completely divided than through the slope portion 332. And when the sound emitter SP is connected to the connected portion in the range of -90° ≤ θ1, θ2 ≤ 90°, the portion on the connector 27 side does not become the top side in the top-bottom direction Db. Therefore, in the present embodiment, the slit 331 is formed in the portion of the rib portion 33 on the connector 27 side, and the slope portion 332 is formed in a portion different from the portion where the slit 331 is formed and that can be the ground side when connected to the connected portion. In other words, the slit 331 is formed in the portion of the rib portion 33 on the connector 27 side, and the slope portion 332 is formed in the portion rotated 90° in the circumferential direction from the portion of the rib portion 33 located closest to the connector 27 side.

[0052] And in the present embodiment, since the sound emitter SP is configured in this way, even if water enters the sound emitter SP, it is possible to suppress the water from reaching the sounding body 6.

[0053] Specifically, when water enters the sound emitter SP through the sound emission hole 84, the water reaches the shielding plate 24. Then, the water that has reached the shielding plate 24 flows toward the ground side in the vertical direction and then flows to the opening vertical wall 231 located on the ground side via the support column 244. At this time, as described above, the groove portion 245 is formed in the support column 244. Therefore, it is easy to collect water at the bottom of the groove portion 245, and the water can be easily discharged to the opening vertical wall 231 by its own weight.

[0054] And, a slit 234 is formed in a portion of the opening vertical wall 231 on the ground side. Therefore, the water that has reached the opening vertical wall 231 is discharged to the outside of the opening vertical wall 231 through the slit 234. At this time, in the present embodiment, the slit 234 is formed so as to sandwich a portion of the opening vertical wall 231 that is connected to the support column 244. Therefore, the water from the support column 244 can be efficiently discharged to the outside. Further, in the present embodiment, the support column 244 is connected to a portion different from the portion where the slit 234 of the opening vertical wall 231 is formed. Therefore, even if water tries to enter through the slit 234 from the outside of the opening vertical wall 231, since the groove portion 245 of the support column 244 does not communicate with the slit 234, it is possible to suppress the water from reaching the shielding plate 24 through the support column 244.

[0055] Also, water can enter the sound emitter SP from between the base 2 such as the bracket protection portion 3b and the first cover 3. Therefore, in the present embodiment, the inner peripheral surface 31b of the bracket protection portion 3b is formed so as to expand toward the other side in the axial direction Da so that it is difficult for water to enter from the outside and it is easy for water to be discharged from the inside.

[0056] And, in the present embodiment, the earthen table surface 232 is configured to be located closer to the first cover 3 side than the tip surface 33a of the rib portion 33. Therefore, first, it is possible to suppress water from entering the opening vertical wall 231 side by the rib portion 33.

[0057] Further, the slit 234 formed in the opening vertical wall 231 of the present embodiment is formed at the opening tip portion 233 which is the tip side of the opening vertical wall 231 rather than the earth table surface 232, and is not formed on the root side of the opening vertical wall 231. For this reason, even if water reaches the opening vertical wall 231 after passing through the rib portion 33, it is possible to suppress the water from entering the inside of the opening vertical wall 231 due to the earth table surface 232. For example, as shown in FIG. 14, when the connector 27 is arranged on the ground side in the vertical direction, the water W cannot overcome the earth table surface 232 and flows along the opening vertical wall 231 toward the ground side. Similarly, as shown in FIG. 15, when the sound generator SP is arranged such that the extending direction of the connector 27 is orthogonal to the vertical direction, the water W cannot overcome the earth table surface 232 and flows along the opening vertical wall 231 toward the ground side. That is, the slit 234 of the present embodiment is formed so that while discharging the water W inside the opening vertical wall 231, it is difficult for the water W from the outside of the opening vertical wall 231 to enter. Note that FIGS. 14 and 15 show plan views in a state where the first cover 3 is removed.

[0058] And in the present embodiment, a rib portion 33 is formed so as to surround the opening vertical wall 231, and a slit 331 and a slope portion 332 are formed in the rib portion 33. For this reason, the water discharged from the opening vertical wall 231 is discharged to the outside of the rib portion 33 from the slit 331 or the slope portion 332 of the rib portion 33, and it is possible to suppress the water from staying inside the rib portion 33.

[0059] At this time, in the present embodiment, the slit 331 is formed in a portion that can be the ground side, and when water reaches the slit 331, the water can be efficiently discharged to the outside of the rib portion 33. Further, when water reaches the slope portion 332 of the rib portion 33, the water is discharged to the outside along the inner peripheral surface 332a of the slope portion 332.

[0060] Here, since the slope portions 332 are arranged as described above, a part of the plurality of slope portions 332 will be located on the top side in the vertical direction. Therefore, in the present embodiment, the slope portion 332 has a tapered shape in which the inner peripheral surface 332a expands outward toward the other side in the axial direction Da. As a result, the slope portion 332 is configured such that water inside the rib portion 33 is easily discharged to the outside, and it is difficult for water from the outside to enter the inside.

[0061] According to the present embodiment described above, the slit 234 is formed in the opening vertical wall 231 at a portion that can be on the ground side, that is, at the opening tip portion 233 on the tip side with respect to the soil table surface 232. For this reason, it is easy to discharge the water that has entered the opening vertical wall 231, and it is possible to suppress water from entering from the outside of the opening vertical wall 231. Therefore, it is possible to suppress water from adhering to the sounding body 6. Further, in the present embodiment, since the opening vertical wall 231 having such a drainage function and a water shielding function is formed in the partition wall 22, for example, compared with the case where a configuration having a similar function is arranged near the outer surface of the base 2 or near the sound emission hole 84, it is possible to suppress a decrease in sound pressure characteristics. That is, according to the sound emitter of the present embodiment, it is possible to suppress water from adhering to the sounding body 6 while suppressing a decrease in sound pressure characteristics.

[0062] (1) In the present embodiment, the tip surface 33a of the rib portion 33 in the first cover 3 is arranged so as to be on the side opposite to the first cover 3 side with respect to the soil table surface 232. For this reason, it is possible to suppress water from reaching the soil table surface 232 (that is, the opening vertical wall 231) from the outside of the rib portion 33, and further, it is possible to suppress water from adhering to the sounding body 6.

[0063] (2) In the present embodiment, at least one of the slit 331 and the slope portion 332 is formed in a portion of the rib portion 33 that can be on the ground side. For this reason, the water inside the rib portion 33 can be discharged from the slit 331 or the slope portion 332, and it is possible to suppress water from staying inside the rib portion 33.

[0064] (3) In this embodiment, the slit 331 is formed in a portion different from the portion that can be on the top side. Therefore, it is possible to suppress water from entering from the outside of the rib portion 33 into the inside of the rib portion 33.

[0065] (4) In this embodiment, the support column 244 has a groove portion 245 formed with a V-shaped cross section. Therefore, it is easy to collect water at the bottom of the groove portion 245, and it is possible to easily discharge the water to the opening vertical wall 231 due to its own weight.

[0066] (5) In this embodiment, the support column 244 has a tapered convex portion 246 formed in the portion on the second cover 4 side. Therefore, the water adhering to the portion on the second cover 4 side of the support column 244 can also be easily collected along the convex portion 246 and can be easily guided to the opening vertical wall 231.

[0067] (6) In this embodiment, the support column 244 is connected to a portion different from the portion where the slit 234 of the opening vertical wall 231 is formed. Therefore, even if water tries to enter through the slit 234 from the outside of the opening vertical wall 231, since the groove portion 245 of the support column 244 does not communicate with the slit 234, it is possible to suppress the water from reaching the shielding plate 24 through the support column 244.

[0068] (7) In this embodiment, the slit 234 is formed so as to sandwich the portion of the opening vertical wall 231 that is connected to the support column 244. Therefore, it is possible to efficiently discharge the water from the support column 244 to the outside.

[0069] (Other Embodiments) Although the present disclosure has been described in accordance with the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within an equivalent range. In addition, various combinations and forms, and further, other combinations and forms including only one element, more, or less thereof, are within the scope and spirit of the present disclosure.

[0070] For example, in the above-described first embodiment, the first cover 3 may not be provided with the rib portion 33. Further, the rib portion 33 of the first cover 3 may have the tip surface 33a positioned closer to the first cover 3 side than the base surface 232.

[0071] Furthermore, only one of the slit 331 and the slope portion 332 may be formed in the rib portion 33. Also, the slit 331 may be formed so as to be positioned on the top side of the rib portion 33. In such a configuration, water easily enters from the slit 331 of the rib portion 33 into the inside of the rib portion 33, but the entry of water up to the inside of the opening vertical wall 231 is suppressed by the base surface 232 of the opening vertical wall 231.

[0072] And the support column 244 may not be formed with the groove portion 245, nor may the convex portion 246 be formed.

[0073] Furthermore, the support column 244 may be formed so as to communicate with the portion of the opening vertical wall 231 where the slit 331 is formed.

Explanation of Reference Numerals

[0074] 6 Sound emitter 21 Base cylinder portion 22 Partition wall 23 Through hole 24 Shielding plate 84 Sound emission hole 231 Opening vertical wall 232 Base surface 233 Opening tip portion 234 Slit

Claims

1. A sound emitter, comprising: a housing (1) including a base cylinder part (21) having a partition wall (22) in which a through hole (23) is formed, and a connector (27) provided in the base cylinder part and protruding to the side opposite to the base cylinder part side; a sounding body (6) disposed inside the housing so as to close the through hole; a shielding plate (24) disposed inside the housing in a state facing the sounding body; a cover (3) disposed on the side opposite to the sounding body with the shielding plate interposed therebetween, provided in an opening at one end side of the base cylinder part, and having a sound emitting hole (84) formed at a position facing the shielding plate; the partition wall surrounds the through hole and has a frame-shaped opening standing wall (231) protruding toward the cover side; the opening standing wall has a base surface (232) as a stepped surface at a portion on the side opposite to the through hole side, and when a portion on the tip end side in the protruding direction from the base surface is an opening tip end (233), a slit (234) is formed only at the opening tip end; the slit is formed in a portion of the opening standing wall that can be the ground side in the vertical direction (Db) when the connector is connected to the connected portion, the sound emitter.

2. The cover has a frame-shaped rib portion (33) protruding toward the partition wall side of the base cylinder part on the outer edge side rather than the portion facing the opening standing wall; The sound emitter according to claim 1, wherein a tip end surface (33a) of the rib portion in the protruding direction is located on the side opposite to the cover rather than the base surface.

3. The sound emitter according to claim 2, wherein at least one of a slit (331) that divides the rib portion and a slope portion (332) having a shape in which an inner peripheral surface (332a) of the rib portion spreads outward toward the tip end surface in the protruding direction of the rib portion is formed in a portion of the rib portion that can be the ground side in the vertical direction when the connector is connected to the connected portion.

4. At least the slit is formed in the rib portion; The sound emitter according to claim 3, wherein the slit is formed only in a portion different from a portion that can be the top side in the vertical direction when connected to the connected portion.

5. The shielding plate is connected to the opening standing wall via a support column (244); The sound emitter according to claim 1, wherein the support column has a tapered groove portion (245) in which a distance between opposite side surfaces becomes narrower toward the bottom side formed in a portion on the cover side.

6. The shielding plate is connected to the opening standing wall via a support column (244); The sound emitter according to claim 1, wherein the support column has a tapered convex portion (246) formed on a portion opposite to the cover side, protruding toward the side opposite to the cover side, and the distance between the opposing side surfaces narrowing toward the tip portion in the protruding direction.

7. The sound emitter according to claim 5 or 6, wherein the support column is connected to a portion of the opening vertical wall different from the portion where the slit is formed.

8. The sound emitter according to claim 7, wherein the slit in the opening vertical wall is formed so as to sandwich a portion of the opening vertical wall connected to the support column.

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