JP5221259B2 - Portable sound level meter - Google Patents
Portable sound level meter Download PDFInfo
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- JP5221259B2 JP5221259B2 JP2008239470A JP2008239470A JP5221259B2 JP 5221259 B2 JP5221259 B2 JP 5221259B2 JP 2008239470 A JP2008239470 A JP 2008239470A JP 2008239470 A JP2008239470 A JP 2008239470A JP 5221259 B2 JP5221259 B2 JP 5221259B2
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- case
- main body
- preamplifier
- level meter
- sound level
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Description
本発明は、ポケットに入れて持ち運びが可能な携帯型騒音計に関する。 The present invention relates to a portable sound level meter that can be carried in a pocket.
騒音測定の現場では、移動して複数の場所で騒音を測定しなければならない。また、騒音の測定には、測定機材も多く移動に非常に手間がかかる。従来の手持ち型の騒音計は、全長で３０ｃｍ程度あり、持ち運びの際には専用のキャリーケースなどを必要としている。 In the field of noise measurement, you must move and measure noise at multiple locations. In addition, the measurement of noise requires a lot of measuring equipment and is very time-consuming to move. A conventional handheld sound level meter has a total length of about 30 cm, and requires a dedicated carry case for carrying.
そこで、簡易な騒音測定で十分な場合には、騒音計をポケットに入れて持ち運びたいという要望がある。しかし、騒音計を小型にするためには、風雨の進入を防ぐ構造に工夫が必要となる。 Therefore, when a simple noise measurement is sufficient, there is a demand for carrying a sound level meter in a pocket. However, in order to reduce the size of the sound level meter, it is necessary to devise a structure that prevents the entry of wind and rain.
本発明は、従来の技術が有するこのような問題点に鑑みてなされたものであり、その目的とするところは、本体ケース内への水や埃などの浸入を防止することができる携帯型騒音計を提供しようとするものである。 The present invention has been made in view of such problems of the prior art, and the object of the present invention is to provide portable noise that can prevent water and dust from entering the main body case. It is intended to provide a total.
上記課題を解決すべく請求項１に係る発明は、マイクロホンのプリアンプケースに取り付けられる弾性体のＯリングと、本体ケースの開口部から空隙を有して突出する弾性体のキートップを備え、前記プリアンプケースの根元に形成された切込みにプリント基板を配設し、前記本体ケースの上部で挟んで前記プリアンプケースを固定し、前記Ｏリングが前記プリアンプケースと前記本体ケースの隙間をなくすと共に、前記キートップの周縁部に形成される鍔部が前記本体ケースと前記プリント基板により挟持・押圧されて前記本体ケースと前記プリント基板の隙間をなくすものである。 The invention according to claim 1 to solve the above problems is provided with O-ring elastic body attached to the pre-amplifier case microphone, a key top of the elastic body projecting with a gap from the opening of the main body case, wherein A printed circuit board is disposed in a notch formed at the base of the preamplifier case, the preamplifier case is fixed by being sandwiched between the upper parts of the main body case, the O-ring eliminates a gap between the preamplifier case and the main body case, and those which flange portion formed on the periphery of the key top is sandwiched and pressed by the printed circuit board and the main body case eliminate gaps of the printed circuit board and the main body case.
請求項２に係る発明は、請求項１記載の携帯型騒音計において、前記キートップは前記本体ケースに配置される複数のスイッチ類を構成すべく一体で形成されるものである。 According to a second aspect of the present invention, in the portable sound level meter according to the first aspect, the key top is integrally formed to constitute a plurality of switches arranged in the main body case.
請求項１に係る発明によれば、Ｏリングを使うことで、小型化を実現しながら、マイクロホンのプリアンプケースと本体ケースの隙間がなくせるので、少々の水滴がかかっても、本体ケース内へ水などが浸入しなくなる。弾性体のＯリングを使うので、プリアンプケースが本体ケースに確実に固定され、がたつかない。また、Ｏリングを使用しない従来のフランジ構造に比べて、材料費を低減でき、加工工数も下がる。更に、キートップの周縁部に形成される鍔部を本体ケースとプリント基板で挟持・押圧する構造とすることで、小型かつ低コストで、ボタン部分からの本体ケース内への水などの浸入を防ぐことができる。
請求項２に係る発明によれば、キートップが複数のスイッチ類を構成すべく一体で形成されているので、複数のスイッチ類を構成することが一度の挟持・押圧作業で行うことができ、組立が容易になり、組立工数の低減に寄与する。
According to the first aspect of the invention, by using the O-ring, it is possible to eliminate the gap between the microphone preamplifier case and the main body case while realizing miniaturization. Water will not enter. Since the elastic O-ring is used, the preamplifier case is securely fixed to the main body case and does not rattle. In addition, the material cost can be reduced and the number of processing steps can be reduced as compared with a conventional flange structure that does not use an O-ring. In addition, it has a structure in which the collar formed on the peripheral edge of the key top is sandwiched and pressed between the main body case and the printed circuit board, so that water and the like can enter the main body case from the button portion at a small size and low cost. Can be prevented.
According to the invention according to claim 2, since the key top is integrally formed to form a plurality of switches, it is possible to perform a plurality of switches by a single clamping / pressing operation, Assembling becomes easy and contributes to a reduction in assembly man-hours.
以下に本発明の実施の形態を添付図面に基づいて説明する。ここで、図１は本発明に係る携帯型騒音計の斜視図、図２は同じく要部分解斜視図、図３は組み付けられたキートップの断面図、図４は一体化したキートップの斜視図である。 Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a perspective view of a portable sound level meter according to the present invention, FIG. 2 is an exploded perspective view of the main part, FIG. 3 is a sectional view of the assembled key top, and FIG. 4 is a perspective view of the integrated key top. FIG.
本発明に係る携帯型騒音計１は、図１に示すように、騒音計本体２、騒音計本体２から突出したプリアンプケース３、プリアンプケース３の先端に設けたマイクロホン４からなる（例えば、全長約１２ｃｍ）。携帯型騒音計１は、騒音計本体２に収納される乾電池で動作する。全長約１２ｃｍの携帯型騒音計１は小型なので、胸ポケットなどに入れて持ち運びすることができる。 As shown in FIG. 1, a portable sound level meter 1 according to the present invention includes a sound level meter main body 2, a preamplifier case 3 protruding from the noise level meter main body 2, and a microphone 4 provided at the tip of the preamplifier case 3 (for example, the full length About 12 cm). The portable sound level meter 1 operates with a dry battery stored in the sound level meter main body 2. Since the portable sound level meter 1 having a total length of about 12 cm is small, it can be carried in a breast pocket or the like.
騒音計本体２は、４分割の本体ケース６と、本体ケース６に配置されている測定データや設定条件などを表示する液晶画面７と、同じく電源入りや測定開始／測定停止などの操作ボタン８，９などのスイッチからなる。４分割の本体ケース６は、上部表ケース６ａ、上部裏ケース６ｂ、下部表ケース６ｃ、下部裏ケース６ｄから構成される。操作ボタン８，９などのスイッチは、下部表ケース６ｃのから突出するように配置されている。 The sound level meter main body 2 includes a four-part main body case 6, a liquid crystal screen 7 for displaying measurement data and setting conditions arranged in the main body case 6, and operation buttons 8 for turning on the power and starting / stopping measurement. , 9 and so on. The four-divided main body case 6 includes an upper front case 6a, an upper back case 6b, a lower front case 6c, and a lower back case 6d. Switches such as the operation buttons 8 and 9 are arranged so as to protrude from the lower front case 6c.
従来のプリアンプケースは、一本の金属棒から端部フランジ形状を有する筒状になるよう切削加工により製作されていた。形状の精度を保つためにこのような手法をとっていたが、材料の歩留まりが悪く、しかも加工に高い技術が要求される作業であった。また、フランジ付きのプリアンプケースは本体ケースに安定して保持させることができるものの、騒音計の小型化のネックとなっていた。 Conventional preamplifier cases have been manufactured by cutting from a single metal rod into a cylindrical shape having an end flange shape. In order to maintain the accuracy of the shape, such a method was adopted, but the yield of the material was poor, and the work required high technology for processing. In addition, the flanged preamplifier case can be stably held in the main body case, but has become a bottleneck for downsizing the sound level meter.
そこで、携帯型騒音計１では、図２に示すように、プリアンプケース３を本体ケース６の上部表ケース６ａと上部裏ケース６ｂで挟んで固定するために、プリアンプケース３が突出する上部表ケース６ａと上部裏ケース６ｂで形成される開口部１０の内側であって、プリアンプケース３の根元近傍に弾性体でなるＯリング１１を取り付けている。 Therefore, in the portable sound level meter 1, as shown in FIG. 2, in order to sandwich the preamplifier case 3 between the upper front case 6 a and the upper back case 6 b of the main body case 6, the upper front case from which the preamplifier case 3 protrudes is fixed. An O-ring 11 made of an elastic body is attached in the vicinity of the base of the preamplifier case 3 inside the opening 10 formed by 6a and the upper back case 6b.
上部表ケース６ａと上部裏ケース６ｂでＯリング１１を介してプリアンプケース３を押圧することにより、プリアンプケース３が強固に本体ケース６に保持される。また、プリアンプケース３の根元には切込み３ａが形成されており、切込み３ａにプリント基板１２を食い込ませることでプリアンプケース３が回転しなくなる。また、アースも取れる。 The preamplifier case 3 is firmly held by the main body case 6 by pressing the preamplifier case 3 through the O-ring 11 with the upper front case 6a and the upper back case 6b. In addition, a cut 3a is formed at the base of the preamplifier case 3, and the preamplifier case 3 does not rotate when the printed board 12 is bitten into the cut 3a. It can also be grounded.
そして、プリアンプケース３と開口部１０により形成される隙間は、Ｏリング１１で塞がれる。Ｏリング１１は、プリアンプケース３と開口部１０により形成される隙間から、本体ケース６内に水や埃などが浸入するのを防ぐ。このような構造にすることで、プリアンプケース３を強固に本体ケース６で保持しながら、本体ケース６内への水や埃などの浸入を防ぎつつ、騒音計の小型化を実現することができる。 The gap formed by the preamplifier case 3 and the opening 10 is closed by the O-ring 11. The O-ring 11 prevents water and dust from entering the main body case 6 from the gap formed by the preamplifier case 3 and the opening 10. By adopting such a structure, it is possible to reduce the size of the sound level meter while preventing the intrusion of water or dust into the main body case 6 while firmly holding the preamplifier case 3 with the main body case 6. .
更に、図１に示すように、下部表ケース６ｃの開口部１３から操作ボタン８，９などのスイッチを構成する弾性体でなるキートップ１５が突出している。図３に示すように、キートップ１５の周縁部には鍔部１５ａが形成されている。鍔部１５ａが本体ケース６の下部表ケース６ｃとプリント基板１２により挟持・押圧され、キートップ１５が本体ケース６に固定される。鍔部１５ａを下部表ケース６ｃとプリント基板１２で挟持・押圧することにより、本体ケース６内への水や埃などの浸入を防ぐことができる。 Further, as shown in FIG. 1, a key top 15 made of an elastic body that constitutes a switch such as the operation buttons 8 and 9 protrudes from the opening 13 of the lower front case 6c. As shown in FIG. 3, a flange 15 a is formed on the peripheral edge of the key top 15. The flange 15 a is sandwiched and pressed by the lower front case 6 c of the main body case 6 and the printed circuit board 12, and the key top 15 is fixed to the main body case 6. By sandwiching and pressing the flange portion 15a between the lower front case 6c and the printed circuit board 12, it is possible to prevent water and dust from entering the main body case 6.
キートップ１５を指先などで押し込んだ場合に、キートップ１５がプリント基板１２と当接する部分には、導電性の弾性部材１７が取り付けられている。プリント基板１２の電極パターンに導電性の弾性部材１７が当接したときに、電極パターンが短絡することで、操作ボタン８，９などがスイッチの役割を果たすことになる。このような構造にすることで、本体ケース６内への水や埃などの浸入を防ぎつつ、騒音計の小型化を実現することができる。 A conductive elastic member 17 is attached to a portion where the key top 15 contacts the printed circuit board 12 when the key top 15 is pushed in with a fingertip or the like. When the conductive elastic member 17 comes into contact with the electrode pattern of the printed circuit board 12, the electrode buttons are short-circuited, so that the operation buttons 8, 9 and the like serve as a switch. With this structure, it is possible to reduce the size of the sound level meter while preventing water and dust from entering the main body case 6.
また、図４に示すように、操作ボタン８，９などの複数のスイッチ類を構成すべくキートップ１５を一体で形成すれば、このようなキートップ１５の鍔部１５ａを下部表ケース６ｃとプリント基板１２で挟持・押圧するだけで複数のスイッチ類を一度の組立作業で構成することができ、組立が容易になって組立工数の低減に寄与することができる。 Further, as shown in FIG. 4, if the key top 15 is integrally formed so as to form a plurality of switches such as the operation buttons 8 and 9, the flange 15a of the key top 15 and the lower front case 6c are formed. A plurality of switches can be configured by a single assembly operation simply by being sandwiched and pressed by the printed circuit board 12, and the assembly can be facilitated, contributing to a reduction in the number of assembly steps.
本発明によれば、騒音計の小型化を図ることができると共に、本体ケース内への水や埃などの浸入を防止することができる。 According to the present invention, it is possible to reduce the size of the sound level meter and to prevent water and dust from entering the main body case.
１…携帯型騒音計、２…騒音計本体、３…プリアンプケース、４…マイクロホン、６…本体ケース、６ａ…上部表ケース、６ｂ…上部裏ケース、６ｃ…下部表ケース、６ｄ…下部裏ケース、８，９…操作ボタン、１０，１３…開口部、１１…Ｏリング、１２…プリント基板、１５…キートップ、１５ａ…鍔部、１７…弾性部材。 DESCRIPTION OF SYMBOLS 1 ... Portable sound level meter, 2 ... Noise meter main body, 3 ... Preamplifier case, 4 ... Microphone, 6 ... Main body case, 6a ... Upper front case, 6b ... Upper back case, 6c ... Lower front case, 6d ... Lower back case 8, 9 ... operation buttons, 10, 13 ... opening, 11 ... O-ring, 12 ... printed circuit board, 15 ... key top, 15a ... collar, 17 ... elastic member.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008239470A JP5221259B2 (en) | 2008-09-18 | 2008-09-18 | Portable sound level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008239470A JP5221259B2 (en) | 2008-09-18 | 2008-09-18 | Portable sound level meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010071794A JP2010071794A (en) | 2010-04-02 |
| JP5221259B2 true JP5221259B2 (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008239470A Expired - Fee Related JP5221259B2 (en) | 2008-09-18 | 2008-09-18 | Portable sound level meter |
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| JP (1) | JP5221259B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611446B (en) * | 2020-12-14 | 2023-06-02 | 杭州爱华仪器有限公司 | High-performance sound level meter based on ANDROID operating system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2867914B2 (en) * | 1995-02-22 | 1999-03-10 | 住友電装株式会社 | Board fixing structure |
| JPH104273A (en) * | 1996-06-18 | 1998-01-06 | Saitama Nippon Denki Kk | Case body waterproof structure of electric equipment |
| JPH11331333A (en) * | 1998-05-14 | 1999-11-30 | Nec Saitama Ltd | Mount structure for printed board of portable telephone set |
| JP4271668B2 (en) * | 2005-03-18 | 2009-06-03 | 株式会社カシオ日立モバイルコミュニケーションズ | Electroacoustic transducer mounting structure |
| JP2008026242A (en) * | 2006-07-25 | 2008-02-07 | Rion Co Ltd | Preamplifier device for sound level meter and sound level meter using the same |
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- 2008-09-18 JP JP2008239470A patent/JP5221259B2/en not_active Expired - Fee Related
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