JP2012044605A - Speaker mounted article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker mounted article in which deterioration of waterproof performance is suppressed even when receiving a strong impact from outside.SOLUTION: The speaker mounted article 1 includes: a speaker unit 3 having a speaker 120 equipped with a cone-type diaphragm 123, and a speaker holder 130; a coating member 110 having a speaker grille portion 111 where at least one hole 111H is opened in a position confronted with the diaphragm 123; and a waterproof packing 140 having an opening 141 formed in a part confronted with the diaphragm 123, and a waterproof rib 144 which is formed in a region outer than an outermost peripheral end 123X of the diaphragm and inner than an outermost peripheral end 130X of the speaker holder and is tightly fitted to the coating member 110. The coating member 110 has a brittle portion 112, which is more brittle than the speaker grille portion 111, in a region outer than the outermost peripheral end 123X of the diaphragm and inner than the waterproof rib 144 of the waterproof packing 140.

Description

  The present invention relates to a speaker-mounted product.

In portable electronic devices such as wireless devices and mobile phones, a speaker is built in a resin case. A case of a portable electronic device is provided with a speaker grill part having at least one hole such as a slit to release sound from a built-in speaker to the outside.
As a speaker, a dynamic speaker having a cone-shaped diaphragm is widely used. A dynamic speaker is roughly a magnetic circuit unit composed of a permanent magnet and a yoke, a voice coil inserted into a gap in the magnetic circuit unit, a voice coil bobbin holding the voice coil, and a cone type vibration connected to the voice coil bobbin. A board and a bowl-shaped speaker frame for holding them are provided. The speaker is mounted on a portable electronic device in the form of a speaker unit held by a speaker holder.

JP 2004-343669 A JP 2009-004821 A

  In a portable electronic device, a waterproof packing made of an elastic resin such as silicone rubber is interposed between a case and various built-in electronic components in order to protect the various built-in electronic components. In the waterproof packing, an opening is formed in a portion facing the diaphragm of the speaker so as not to prevent the sound from the built-in speaker from being released to the outside. As a diaphragm for a speaker that is not covered with the waterproof packing, a resin diaphragm having a waterproof property is preferably used. The portable electronic device has the waterproof structure as described above.

In a case of a portable electronic device, a speaker grille portion in which at least one hole portion is opened is relatively weak against mechanical shock from the outside as compared with other portions.
If the case of the portable electronic device receives a strong impact from the outside, such as when the portable electronic device falls or another object collides with the portable electronic device, the resin around the hole in the speaker grille There is a risk that it will break into the device and in extreme cases will break through the diaphragm. If the diaphragm is damaged, it will not be possible to prevent water from entering the diaphragm and maintain the desired waterproof performance.

  In particular, in a speaker grille having a plurality of slit-like holes, resin flows from both sides between adjacent slit-like holes during case molding, and the adhesion of the resin at the position where these resins merge is reduced. Tend to. This joining position of the resin is called a “weld line”, and the portion tends to be weak against mechanical impacts from the outside, particularly than other portions. Therefore, the above problem is particularly likely to occur when the speaker grill has a plurality of slit-shaped holes.

  It can be considered that a reinforcing part such as a metal plate is added between the speaker grille and the diaphragm so that the diaphragm is prevented from being damaged even when the portable electronic device receives a strong impact from the outside. However, it is not preferable to add a reinforcing component such as a metal plate that is not essential to the portable electronic device because it increases the member cost and the assembly cost and makes it difficult to reduce the size and weight of the portable electronic device.

Patent Document 1 discloses an underwater speaker in which a diaphragm (2) and a center cap (1) are waterproofed with a waterproofing agent or an elastic adhesive (22) (Claim 1, FIG. 1).
In Patent Document 2, a waterproof rib (51) that is in close contact with the speaker mounting surface of the case (3) to obtain waterproofness and a convex portion (52) that functions as a gasket are integrated with the waterproof packing (5). The provided speaker mounting structure is disclosed (Claim 1, FIG. 1).
However, in any case, no measures are taken against the deterioration of the waterproof performance due to the breakage of the diaphragm caused by the breakage of the speaker grille.

  The above-mentioned problem is not limited to portable electronic devices, but is the same in any speaker-equipped product such as various audio devices for home use and car audio.

  The present invention has been made in view of the above circumstances, and at a low cost without adding a reinforcing member between the speaker and the covering member having the speaker grill part, the speaker grill part and the vicinity thereof have a strong impact from the outside. Even when it is received, it is an object to provide a speaker-mounted product in which damage to the speaker grille and the diaphragm is suppressed, and deterioration in waterproof performance is suppressed.

The speaker-mounted product of the present invention is
A speaker unit comprising a speaker having a waterproof cone-shaped diaphragm, and a speaker holder for holding the speaker;
A covering member having a speaker grill portion that covers the speaker unit and has at least one hole opened at a position facing the diaphragm;
An opening formed in a portion facing the diaphragm, and a main surface on the covering member side formed in a region outside the outermost peripheral end of the diaphragm and inside the outermost peripheral end of the speaker holder. A waterproof packing provided with a waterproof rib that protrudes more closely to the covering member;
The covering member is provided with a fragile portion that is more fragile than the speaker grill portion with respect to external stress in a region outside the outermost peripheral edge of the diaphragm and inside the waterproof rib of the waterproof packing. It is a thing.

  In the speaker-mounted product of the present invention, the “cover member having the speaker grille” is, for example, a case of a portable electronic device such as a radio or a mobile phone or an electronic device such as various acoustic devices, an in-vehicle panel, and the like.

In the speaker-mounted product of the present invention, examples of the fragile portion include a recess forming portion in which at least one recess is formed in the covering member.
It is preferable that the at least one recess is at least one groove portion that is formed in a generally annular shape along the outermost peripheral end of the diaphragm.
In this specification, “substantially annular” includes a complete annular shape and a shape in which a part of the annular shape is missing.
Examples of the shape of the concave portion include a wedge shape in cross-sectional view.
It is preferable that the at least one recess is formed on the speaker unit side of the covering member.

  In the speaker-mounted product of the present invention, it is preferable that the waterproof packing further includes a rib protruding from the main surface on the covering member side in a region on the covering member side and on the inner side of the fragile portion.

In the speaker-mounted product of the present invention, a notch portion is provided around the opening of the waterproof packing so that the tip of the outer periphery of the speaker and the tip of the speaker holder adjacent to the outer periphery of the speaker enter. It is preferable.
Further, a waterproof member may be interposed between the front end of the outer periphery of the speaker fitted into the notch and the front end of the speaker holder adjacent to the outer periphery of the speaker and the notch. preferable.

In the speaker mounted product of the present invention,
The speaker holder has a recess in the waterproof packing side and in a region between the speaker and the waterproof rib of the waterproof packing,
It is preferable that the waterproof packing further includes a speaker holder insertion portion that enters the concave portion of the speaker holder, and a waterproof rib that protrudes from the speaker holder insertion portion and is in close contact with the wall surface of the concave portion.

The present invention is preferably applicable to various electronic devices equipped with speakers.
Examples of the electronic device provided with the speaker include portable electronic devices such as a wireless device and a mobile phone, various acoustic devices for home use, car audio, and the like.

  According to the present invention, the speaker grille and its vicinity can be manufactured at low cost without adding a reinforcing member between the speaker and the covering member having the speaker grille portion, even when the speaker grille portion and its vicinity receive a strong impact from the outside. It is possible to provide a speaker-mounted product in which breakage of the portion and the diaphragm is suppressed, and a decrease in waterproof performance is suppressed.

It is a front view of the speaker mounting product of 1st Embodiment which concerns on this invention. It is sectional drawing of the speaker mounting goods of 1st Embodiment which concerns on this invention. It is a front view of the speaker mounting product of 2nd Embodiment which concerns on this invention. It is sectional drawing of the speaker mounting goods of 2nd Embodiment which concerns on this invention. It is sectional drawing which shows the example of a shape before compression of a waterproof rib and after compression. It is sectional drawing which shows the example of a shape before compression of a waterproof rib and after compression. It is sectional drawing which shows the example of a shape before compression of a waterproof rib and after compression. It is sectional drawing which shows the example of a shape before compression of a waterproof rib and after compression.

“First Embodiment”
With reference to drawings, the speaker mounting product of 1st Embodiment which concerns on this invention is demonstrated. 1A is a front view of a speaker-mounted product, and FIG. 1B is a cross-sectional view of the speaker-mounted product. 1B is a cross-sectional view taken along line IB-IB in FIG. 1A.
In order to facilitate visual recognition in the drawings, the scales and positions of the constituent members are different from the actual ones, and some members are not shown. For example, in FIG. 1A, the speaker grille is shown in an enlarged scale than the actual scale, and illustrations of operation buttons and the like are omitted. In the cross-sectional view, hatching is omitted as appropriate.

  The present invention can be applied to portable electronic devices such as wireless devices and mobile phones, various audio devices for home use, car audio, and the like. In this embodiment, an application example to a wireless device will be described.

  In the wireless device 1, many electronic components necessary for the wireless device 1 including the speaker 120 are accommodated in a resin case 110. In the present embodiment, the case 110 is a speaker covering member that covers the speaker 120.

In the present embodiment, the speaker 120 is a dynamic speaker provided with a cone-shaped diaphragm 123.
The speaker 120 is roughly composed of a magnetic circuit unit 121 composed of a permanent magnet and a yoke, a voice coil unit 122 composed of a voice coil inserted into a gap in the magnetic circuit unit 121 and a voice coil bobbin that holds the voice coil, and a voice coil unit 122. And a cone-shaped diaphragm 123 connected to each other, and a bowl-shaped speaker frame 124 for holding them.
In FIG. 1B, the outer peripheral portion 125 of the speaker 120 is illustrated in a rectangular shape, but this is a schematic illustration of the outer peripheral portion 125 of the speaker 120 and is different from the actual shape.

The speaker 120 is attached to the case 110 in the form of the speaker unit 3 held by the speaker holder 130.
The speaker holder 130 is connected to the first housing space 131 in which a part of the magnetic circuit unit 121 is housed, and the second housing space 131, and the second housing in which the voice coil unit 122 and the diaphragm 123 are housed. And a storage space 132.
A plurality of holes 133 are opened in the speaker holder 130 at positions facing the diaphragm 123. By providing the plurality of holes 133, an air chamber is formed on the back side of the diaphragm 123, and the sound quality emitted from the speaker 120 to the outside is improved.

  The case 110 is provided with a speaker grill 111 having at least one hole 111H formed at a position facing the diaphragm 123 in order to emit sound from the speaker 120 to the outside. In the present embodiment, a plurality of slit-shaped holes 111 </ b> H are opened in the speaker grill 111. In FIG. 1A, an example in which the speaker grill 111 has three holes 111H is illustrated, but the number of holes 111H is arbitrary.

In the wireless device 1, a waterproof packing 140 made of an elastic resin such as silicone rubber is interposed between the case 110 and the built-in various electronic components in order to protect the built-in various electronic components. In this waterproof packing 140, an opening 141 is formed at a portion facing the diaphragm 123 of the speaker 120 so as not to prevent the sound from the built-in speaker 120 from being released to the outside.
The diaphragm 123 of the speaker 120 that is not covered with the waterproof packing 140 is made of resin and has waterproof properties.

The waterproof packing 140 has a waterproof rib that protrudes from the main surface 143 on the case 110 side and is in close contact with the case 110 in a region outside the outermost peripheral end 123X of the diaphragm 123 and inside the outermost peripheral end 130X of the speaker holder 130. 144 is provided.
The waterproof rib 144 is formed in a substantially annular shape along the outermost peripheral end 123 </ b> X of the diaphragm 123.

In the present embodiment, the waterproof rib 144 has an isosceles triangle shape in sectional view, and the height thereof is designed to be slightly higher than the distance between the main surface 143 on the case 110 side and the case 110. Therefore, the waterproof rib 144 is compressed between the case 110 and firmly adhered to the case 110 without a gap, and has high waterproofness.
As described above, the waterproof rib 144 is actually compressed between the case 110 and firmly adhered to the case 110 without a gap, but is simplified in FIG. 1B and has an uncompressed shape. It is shown.
FIG. 3A shows an example of the shape of the waterproof rib 144 before compression and an example of the shape of the waterproof rib 144 after compression.
In FIG. 3A, the solid line shows an example of the shape of the waterproof rib 144 before compression, and the broken line shows an example of the shape of the waterproof rib 144 after compression (the same applies to FIGS. 3B to 3D).
The cross-sectional shape of the waterproof rib 144 is not limited to the above, and may be a right triangle shape (one-sided fall structure) shown in the left and right views of FIG. 3B, a semicircular shape shown in FIG. 3C, a rectangular shape shown in FIG.

In the present embodiment, the speaker holder 130 is formed with a pressing portion 136 that applies pressure to the formation region of the waterproof rib 144 of the waterproof packing 140.
In the illustrated example, the pressing portion 136 is a pressing rib, but may not be a rib as long as pressure is applied to the waterproof rib 144.
In this embodiment, the pressing portion 136 and the waterproof rib 144 are formed at the same position in the plan view of FIG. 1A. However, if pressure is applied to the waterproof rib 144, the planar positions of the pressing portion 136 and the waterproof rib 144 are separated. It does not matter. However, the closer the planar view positions of the pressing portion 136 and the waterproof rib 144 are, the easier it is to apply pressure to the waterproof rib 144, which is preferable.
For example, the waterproof rib 144 having a right-angled triangular shape (one-side tilted structure) shown in FIG. 3B can be compressed with a lower pressure than the waterproof rib 144 having an isosceles triangle shape shown in FIG. 3A. Therefore, with such a shape, even if the pressing portion 136 and the waterproof rib 144 are slightly separated from each other in a plan view, the waterproof rib 144 is favorably compressed and good waterproof properties are obtained.

  The waterproof rib 144 may have a height equal to the distance between the main surface 143 on the case 110 side and the case 110 and may be in close contact with the case 110 without being compressed and deformed. In such a case, adhesiveness between the waterproof rib 144 and the case 110 can be enhanced by using a double-sided tape, a bond, grease, or the like between the waterproof rib 144 and the case 110 as necessary.

The waterproof packing 140 is further provided with a waterproof rib 149 that protrudes from the side surface 148 of the waterproof packing 140 and is in close contact with the case 110 in a region outside the outermost peripheral end 130 </ b> X of the speaker holder 130.
The waterproof rib 149 has an isosceles triangle shape in cross section, like the waterproof rib 144, and its height is designed to be slightly higher than the distance between the side surface 148 of the waterproof packing 140 and the case 110, and is compressed between the case 110. In addition, it is firmly adhered to the case 110 without a gap, and has high waterproofness.
As described above, the waterproof rib 149 is actually compressed between the case 110 and firmly adhered to the case 110 without a gap. However, the waterproof rib 149 is simplified in the drawing and is not compressed. Show.

  The waterproof packing 140 is provided with a notch 142 around the opening 141 into which at least the tip of the speaker outer periphery 125 and the tip of the adjacent portion 134 of the speaker outer periphery 125 of the speaker holder 130 enter.

The waterproof member 150 is interposed between the front end portion of the speaker outer peripheral portion 125 fitted into the notch portion 142 and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 and the notch portion 142.
In the present embodiment, the waterproof member 150 is a substantially annular resin material made of PET (polyethylene terephthalate) or the like. The waterproof member 150 is fixed to the waterproof packing 140 and the distal end portion of the speaker outer peripheral portion 125 and the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 through a double-sided tape or the like as necessary.

A concave portion 135 is formed on the speaker holder 130 on the outer peripheral side of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 to which the waterproof member 150 is fixed.
The recess 135 is formed on the waterproof packing 140 side of the speaker holder 130 and in a region between the speaker 120 and the waterproof rib 144 of the waterproof packing 140.
A pressing rib that is a pressing portion 136 that presses the waterproof rib 144 is formed adjacent to the recess 135.
The speaker holder 130 is formed with a concave portion 135 and a pressing rib which is a pressing portion 136 in a substantially annular shape along the outermost peripheral end 123 </ b> X of the diaphragm 123.

  The waterproof member 150 is formed in a plate shape so as to face the surface on the case 110 side of the distal end portion of the speaker outer peripheral portion 125 fitted in the notch 142 and the distal end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130. Further, the speaker holder 130 is formed in an L-shape in a sectional view partially entering the recess 135 of the speaker holder 130.

The case 110 is provided with a fragile portion that is more fragile than the speaker grill portion 111 with respect to external stress in a region outside the outermost peripheral end 123X of the diaphragm 123 and inside the waterproof rib 144 of the waterproof packing 140. It has been.
The degree of strength against external stress can be calculated by a stress simulator.
In the present embodiment, the fragile portion is a recess forming portion in which the recess 112 is formed on the surface of the case 110 on the speaker unit 3 side.
In the present embodiment, the recess 112 is a wedge-shaped groove formed in a substantially annular shape along the outermost peripheral edge 123 </ b> X of the diaphragm 123.
The recess 112 may have a complete annular shape or a shape in which a part of the annular shape is missing. FIG. 1A shows the position of the center (the deepest part) of the recess 112.
The recessed portion forming portion may be a plurality of recessed portions (groove portions) that are formed in a substantially annular shape as a whole instead of one substantially annular recessed portion (groove portion) 112.

The waterproof packing 140 is also provided with a shock absorbing rib 145 protruding from the main surface 143 on the case 110 side in a region on the case 110 side and inside the formation portion of the concave portion 112 that is a fragile portion.
Since the shock absorbing rib 145 does not need to have a waterproof function, its height may be close to the case 110 or may be lower. The shape is also arbitrary.
FIG. 1B illustrates a case where the shock absorbing rib 145 has a height that does not adhere to the case 110 and has a rectangular shape in cross section.

The wireless device 1 of the present embodiment is configured as described above.
In the present embodiment, waterproofness is provided by a waterproof packing 140 having a waterproof rib 144 that is interposed between the case 110 and various built-in electronic components and is in close contact with the case 110, and a waterproof resin diaphragm 123. Is secured.

In the present embodiment, the waterproof packing 140 is provided with a notch 142 around the opening 141 into which at least the tip of the speaker outer periphery 125 and the tip of the adjacent portion 134 of the speaker outer periphery 125 of the speaker holder 130 enter. The waterproof member 150 is interposed between the front end portion of the speaker outer peripheral portion 125 fitted into the notch portion 142 and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 and the notch portion 142.
Therefore, even when the smoothness of the surface on the case 110 side of the front end portion of the speaker outer peripheral portion 125 fitted into the notch portion 142 and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 is low, the notch portion 142. The waterproof packing 140 has good adhesion between the front end of the speaker outer peripheral portion 125 fitted into the front end and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130, and good and sufficient waterproofness is ensured.

Although it is preferable to provide the waterproof member 150 as described above, the waterproof member 150 is not essential.
The smoothness of the surface on the case 110 side of the front end portion of the speaker outer peripheral portion 125 fitted in the notch 142 and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 is sufficiently high, and the waterproof member 150 is interposed. Even when the waterproof packing 140 is in good contact with the waterproof packing 140, sufficient waterproofness can be ensured without providing the waterproof member 150.

  In this embodiment, the waterproof property in normal use is ensured by the above configuration.

Further, in the present embodiment, when the wireless device 1 is dropped or another object collides with the wireless device 1 due to the following configuration, the speaker grill unit 111 and its vicinity receive a strong impact from the outside. Even the internal waterproofing is ensured.
In the present embodiment, the case 110 is weaker than the speaker grill portion 111 with respect to external stress in the region outside the outermost peripheral end 123X of the diaphragm 123 and inside the waterproof rib 144 of the waterproof packing 140. Vulnerable part is provided. In the present embodiment, the fragile portion is a concave portion forming portion having a wedge-shaped concave portion 112 formed in a substantially annular shape along the outermost peripheral end 123X of the diaphragm 123.

  In the structure without the fragile portion, the speaker grille portion in which at least one hole portion is opened is weaker than the other portions, and when subjected to a strong impact from the outside, the resin around the hole portion of the speaker grille portion is damaged. There is a risk of getting inside the device and, in extreme cases, breaking through the diaphragm. This problem is particularly likely to occur when the speaker grill has a plurality of slit-shaped holes.

In the present embodiment, when the speaker grill portion is subjected to a strong impact at a level that breaks, the weak portion where the recess 112 is formed is sacrificed before the speaker grill portion 111 to absorb the impact and break, Cracks or cracks occur in this part. In FIG. 1B, reference numeral C is attached to a portion where cracks or cracks are likely to occur.
In the present embodiment, the fragile portion in which the concave portion 112 is formed is sacrificed to absorb and damage the impact, thereby suppressing the damage of the case 110 inside the fragile portion in which the concave portion 112 is formed. Damage to the plate 123 is suppressed.

When the speaker grille 111 receives a very strong impact from the outside and the impact cannot be absorbed simply by damaging the fragile portion, the damaged fragile portion is pushed inward.
In the present embodiment, the fragile portion in which the recess 112 is formed is provided in a region outside the outermost peripheral end 123 </ b> X of the diaphragm 123 and inside the waterproof rib 144 of the waterproof packing 140.
In such a configuration, the fragile portion in which the concave portion 112 is formed is damaged, and even if the damaged fragile portion is pushed inward, the diaphragm 123 is not formed inside the fragile portion, and the flexible waterproof packing 140 is formed. There is only there. Therefore, there is no possibility that the diaphragm 123 is damaged, and the impact is absorbed by the flexible waterproof packing 140, so that the impact on the inside is small. Further, since the positions of the fragile portion and the waterproof rib 144 are shifted, the influence on the close contact portion between the waterproof rib 144 and the case 110 is small, and the waterproof function by the waterproof rib 144 is maintained.

In the present embodiment, the waterproof packing 140 is further provided with a shock absorbing rib 145 that protrudes from the main surface 143 on the case 110 side in a region on the case 110 side and inside the formation portion of the concave portion 112 that is a fragile portion.
In such a configuration, even if the fragile portion in which the concave portion 112 is formed is damaged, and the damaged fragile portion and its vicinity are pushed inward, the shock absorbing rib 145 is provided on the side without the waterproof rib 144 as viewed from the fragile portion. By providing it, this becomes a stopper, and it is possible to prevent the damaged weak part and its vicinity from entering further inside.

In the present embodiment, as described above, the internal waterproofness is secured even when a strong impact is applied from the outside. For this reason, even if the speaker grill portion 111 receives a strong impact from the outside and the weak portion of the case 110 is damaged, the use of the wireless device 1 can be continued.
In particular, since the wireless device may be used in a harsh environment such as disaster support, it is preferable that the wireless device can continue to be used even if the case 110 is damaged.
Further, since only the case 110 is damaged and no internal damage occurs, the repair is simple as long as the case 110 is replaced.

  The distance between the outermost peripheral end 111X of the speaker grill 111 and the center of the recess 112 is not particularly limited, and in the case of a wireless device, for example, 5 mm or less is preferable.

  As described above, according to the present embodiment, the speaker grill 111 and the vicinity thereof are strong from outside without adding a reinforcing member between the speaker 120 and the case 110 having the speaker grill 111. Even in the case of receiving an impact, it is possible to provide the wireless device 1 in which breakage of the speaker grille 111 and the diaphragm 123 is suppressed, and deterioration in waterproof performance is suppressed.

“Second Embodiment”
With reference to drawings, the speaker mounting product of 2nd Embodiment which concerns on this invention is demonstrated. 2A is a front view of the speaker-mounted product, and FIG. 2B is a cross-sectional view of the speaker-mounted product. 2B is a sectional view taken along line IIB-IIB in FIG. 2A.
In order to facilitate visual recognition in the drawings, the scales and positions of the constituent members are different from the actual ones, and some members are not shown. In the cross-sectional view, hatching is omitted as appropriate.
Also in this embodiment, an application example to a wireless device will be described.

  The basic configuration of the wireless device 2 of this embodiment is the same as that of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  Also in the present embodiment, the waterproof packing 140 having the waterproof rib 144 interposed between the case 110 and various built-in electronic components and in close contact with the case 110 and the resin-made diaphragm 123 having a waterproof property are waterproof. Is secured.

Also in the present embodiment, the waterproof packing 140 is provided with a notch 142 around the opening 141 into which at least the tip of the speaker outer periphery 125 and the tip of the adjacent portion 134 of the speaker outer periphery 125 of the speaker holder 130 enter. The waterproof member 150 is interposed between the front end portion of the speaker outer peripheral portion 125 fitted in the notch portion 142 and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 and the notch portion 142.
Therefore, even when the smoothness of the surface on the case 110 side of the front end portion of the speaker outer peripheral portion 125 fitted into the notch portion 142 and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 is low, the notch portion 142. The waterproof packing 140 has good adhesion between the front end of the speaker outer peripheral portion 125 fitted into the front end and the front end portion of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130, and good and sufficient waterproofness is ensured.
Also in the present embodiment, it is preferable to provide the waterproof member 150 as described above, but the waterproof member 150 is not essential.

Also in this embodiment, the speaker holder 130 is formed with a recess 135 on the outer peripheral side of the adjacent portion 134 of the speaker outer peripheral portion 125 of the speaker holder 130 to which the waterproof member 150 is fixed.
In other words, the speaker holder 130 has a recess 135 formed on the waterproof packing 140 side and in a region between the speaker 120 and the waterproof rib 144 of the waterproof packing 140.
Also in the present embodiment, a pressing rib that is a pressing portion 136 that presses the waterproof rib 144 is formed adjacent to the recess 135.

In this embodiment, the waterproof packing 140 further includes a speaker holder insertion portion 146 that enters the recess 135 of the speaker holder 130, and a wall surface of the recess 135 that protrudes from the speaker holder insertion portion 146 (in the illustrated example, the pressing portion 136 is a pressing portion 136. Further, a waterproof rib 147 in close contact with the rib) is further provided.
The speaker holder insertion part 146 is formed in a substantially annular shape like the recess 135.
In the present embodiment, the waterproof rib 147 has an isosceles triangle shape in cross-section, and the height of the waterproof rib 144 is designed to be slightly higher than the interval between the recess 135 and the wall surface of the recess 135. And tightly adhered to the wall surface of the recess 135 without any gap, and has high waterproofness.
As described above, the waterproof rib 147 is actually compressed between the wall surface of the recess 135 and firmly adhered to the wall surface of the recess 135 without a gap, but is simplified and compressed in the drawing. It is illustrated with no shape.

With the above configuration, in this embodiment, the waterproof structure by the waterproof rib 147 is formed on the speaker holder 130 side of the waterproof packing 140 according to the waterproof structure by the waterproof member 150, and the double waterproof structure by these is formed. Is formed. Therefore, in normal use, higher waterproofness is obtained than in the first embodiment.
The waterproof rib 147 differs from the waterproof rib 144 in the protruding direction of the rib, and protrudes in a direction perpendicular to the protruding direction of the waterproof rib 144. In such a configuration, even if the speaker holder 130 moves in the direction of peeling the waterproof rib 144 from the case 110 due to an external impact (upward in FIG. 2B), the waterproof performance by the waterproof rib 147 is not affected. The waterproof function by the waterproof rib 147 is maintained.
Thus, in this embodiment, since the waterproof structure by the waterproof rib 147 is further formed according to the structure of 1st Embodiment, higher waterproof property than 1st Embodiment is obtained.

Also in the present embodiment, the case 110 has an outer area than the outermost peripheral end 123X of the diaphragm 123 and an area inside the waterproof rib 144 of the waterproof packing 140 than the speaker grill portion 111 with respect to external stress. There is a vulnerable part.
In the present embodiment, the fragile portion is a recess forming portion in which the recess 113 is formed on the surface of the case 110 on the speaker unit 3 side.
In the present embodiment, the concave portion 113 is a groove portion having a rectangular shape in cross section, which is formed in a substantially annular shape along the outermost peripheral end 123 </ b> X of the diaphragm 123.
The recess 113 may have a complete annular shape or a shape in which a part of the annular shape is missing. FIG. 2A shows the position of the center of the recess 113.
The recessed portion forming portion may be a plurality of recessed portions (groove portions) that are formed in a substantially annular shape as a whole instead of a single substantially annular recessed portion (groove portion) 113.

Also in the present embodiment, when the speaker grill 111 receives a strong impact from the outside, the weak portion where the recess 113 is formed is sacrificed before the speaker grill 111 to absorb the impact and breakage. Cracks or cracks occur in this part. In FIG. 2B, reference numeral C is attached to a portion where cracks or cracks are likely to occur.
In the present embodiment, the fragile portion in which the concave portion 113 is formed is damaged at the sacrifice, so that the damage of the case 110 inside the fragile portion in which the concave portion 113 is formed is suppressed. Damage is suppressed.

Also in this embodiment, when the speaker grill part 111 receives a very strong impact from the outside and the impact cannot be absorbed simply by damaging the fragile part, the damaged fragile part is pushed inward.
Also in this embodiment, the fragile portion in which the recess 113 is formed is provided in a region outside the outermost peripheral end 123X of the diaphragm 123 and inside the waterproof rib 144 of the waterproof packing 140.
In such a configuration, the fragile portion in which the concave portion 113 is formed is damaged, and even if the damaged fragile portion is pushed inward, the diaphragm 123 is not formed inside the fragile portion, and the flexible waterproof packing 140 is provided. There is only there. Therefore, there is no possibility that the diaphragm 123 is damaged, and the impact is absorbed by the flexible waterproof packing 140, so that the impact on the inside is small. Further, the influence is small on the close contact portion between the waterproof rib 144 and the case 110.

Also in the present embodiment, the waterproof packing 140 is provided with shock absorbing ribs 145 protruding from the main surface 143 on the case 110 side in a region on the case 110 side and inside the recess 112 that is a fragile portion.
Therefore, also in this embodiment, even if the fragile portion in which the recess 113 is formed is damaged, and the damaged fragile portion is pushed inward, the shock absorbing rib 145 on the side without the waterproof rib 144 as viewed from the fragile portion. By providing this, this becomes a stopper, and it is possible to prevent the damaged weak part and its vicinity from entering further inside.

  As described above, also in the present embodiment, the internal waterproofness is ensured even when a strong impact is applied from the outside. Therefore, even if the weak part of the case 110 is damaged due to a strong impact from the outside, the use of the wireless device 2 can be continued.

  Also in this embodiment, the separation distance between the outermost peripheral end 111X of the speaker grill 111 and the center of the recess 113 is not particularly limited, and in the case of a wireless device, for example, 5 mm or less is preferable.

  As described above, according to the present embodiment as well, the speaker grill 111 and its vicinity have a strong impact from outside without adding a reinforcing member between the speaker 120 and the case 110 having the speaker grill 111. Even in the case of receiving the wireless device 2, it is possible to provide the wireless device 2 in which the breakage of the speaker grill 111 and the diaphragm 123 is suppressed and the deterioration of the waterproof performance is suppressed.

"Design changes"
The present invention is not limited to the above-described embodiment, and the design can be changed without departing from the spirit of the present invention.

  The speaker-equipped product of the present invention can be applied to portable electronic devices such as wireless devices and mobile phones, various audio devices for home use, car audio, and the like.

1, 2 Radio equipment (electronic equipment, speakers)
3 Speaker unit 110 Case 111 Speaker grille part 111H Hole part 111X Outermost peripheral edge 112, 113 of the speaker grille part Recessed part 120 forming the weak part 120 Speaker 121 Magnetic circuit part 122 Voice coil unit 123 Diaphragm 123X Outermost circumference edge 124 of the loudspeaker Speaker Frame 125 Speaker outer peripheral portion 130 Speaker holder 130X Outermost peripheral end 134 of the speaker holder Adjacent portion 135 of the speaker outer peripheral portion of the speaker holder Recess 136 Pressing portion 140 Waterproof packing 141 Opening portion 142 Notch portion 143 Main surface 144 of the waterproof packing on the case side Waterproof Rib 145 Shock absorbing rib 146 Speaker holder insertion portion 147 Waterproof rib 148 Side surface 149 of waterproof packing Waterproof rib 150 Waterproof member

Claims (10)

A speaker unit comprising a speaker having a waterproof cone-shaped diaphragm, and a speaker holder for holding the speaker;
A covering member having a speaker grill portion that covers the speaker unit and has at least one hole opened at a position facing the diaphragm;
An opening formed in a portion facing the diaphragm, and a main surface on the covering member side formed in a region outside the outermost peripheral end of the diaphragm and inside the outermost peripheral end of the speaker holder. A waterproof packing provided with a waterproof rib that protrudes more closely to the covering member;
The covering member is provided with a fragile portion that is more fragile than the speaker grill portion with respect to external stress in a region outside the outermost peripheral edge of the diaphragm and inside the waterproof rib of the waterproof packing. Speaker mounted product.   The speaker-mounted product according to claim 1, wherein the fragile portion is a recess forming portion in which at least one recess is formed in the covering member.   The speaker-mounted product according to claim 2, wherein the at least one concave portion is at least one groove portion that is formed in a generally annular shape along the outermost peripheral end of the diaphragm.   The speaker-mounted product according to claim 2 or 3, wherein the recess has a wedge shape in cross section.   The speaker-mounted product according to claim 2, wherein the at least one recess is formed on the speaker unit side of the covering member.   The speaker-mounted product according to any one of claims 1 to 5, wherein the waterproof packing further includes a rib protruding from a main surface on the covering member side in a region on the covering member side and inside the fragile portion.   The cutout part into which the front-end | tip part of the outer peripheral part of the said speaker and the front-end | tip part of the adjacent part of the said outer peripheral part of the said speaker holder enters in the circumference | surroundings of the said opening part of the said waterproof packing is provided. A speaker-mounted product described in Crab.   The waterproof member is interposed between the front end portion of the outer peripheral portion of the speaker fitted into the notch portion and the front end portion of the speaker holder adjacent to the outer peripheral portion of the speaker and the notch portion. The speaker mounting product described. The speaker holder has a recess in the waterproof packing side and in a region between the speaker and the waterproof rib of the waterproof packing,
9. The waterproof packing according to claim 1, further comprising: a speaker holder insertion portion that enters the recess of the speaker holder; and a waterproof rib that protrudes from the speaker holder insertion portion and is in close contact with the wall surface of the recess. Speaker mounted product.   It is an electronic device, The speaker mounting product in any one of Claims 1-9.

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