JPS61294387A - Timepiece with sound generator - Google Patents

Timepiece with sound generator

Info

Publication number
JPS61294387A
JPS61294387A JP13714085A JP13714085A JPS61294387A JP S61294387 A JPS61294387 A JP S61294387A JP 13714085 A JP13714085 A JP 13714085A JP 13714085 A JP13714085 A JP 13714085A JP S61294387 A JPS61294387 A JP S61294387A
Authority
JP
Japan
Prior art keywords
diaphragm
piezo
time
timepiece
resonator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13714085A
Other languages
Japanese (ja)
Inventor
Kenji Oshima
大島　健次
Susumu Ikuma
進 伊熊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seikosha KK
Original Assignee
Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seikosha KK filed Critical Seikosha KK
Priority to JP13714085A priority Critical patent/JPS61294387A/en
Publication of JPS61294387A publication Critical patent/JPS61294387A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/028—Sounding bodies; boxes used as sounding cases; fixation on or in the case

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To make the entire rear surface of a back act as a resonator and to obtain substantial sound pressure with low electric current consumption by constituting the back of a foamed styrene resin and adhering a piezo-electric oscillation diaphragm thereto. CONSTITUTION:A hole 3a is bored to the inside surface or the lower side of the back 3 and the piezo-electric oscillation diaphragm 4 is adhered to the inside surface side thereof. The diaphragm 4 consists of a brass plate 4a and a piezo-electric oscillator 4b adhered thereto. The back 3 functions as the resonator when the time annoucement output is generated from a timepiece body 5 at any just time and when the oscillator 4 is driven. The oscillation of the diaphragm 4 is then amplified and the time annoucement soun having the substantial sound pressure is obtd.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はアラーム時計、報時時計等の発音装置付き時計
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a clock with a sounding device, such as an alarm clock or a time signal clock.

［従来の技術］ 例えば報時を行う掛時計において、発音装置としてムー
ビングコイル形スピーカを用いたものがある。[Prior Art] For example, some wall clocks that notify the time use a moving coil type speaker as a sounding device.

［発明が解決しようとする問題点］ 上記のものでは、ムービング形のため、厚くなってしま
い薄形の報時時計の実現が難しいものであった。また消
費電流が多く、数１０ｍＡも流れ、ピーク時には１００
ｍＡ以上も必要とするものでありた。[Problems to be Solved by the Invention] Since the above-mentioned timepiece is of a moving type, it is thick, making it difficult to realize a thin timepiece. In addition, the current consumption is large, with several tens of mA flowing, and 100 mA flowing at the peak.
It required more than mA.

本発明は、薄形で充分な音圧が得られ、しかも消費電流
が少くてすむ発音装置付き時計を提供するものである。The present invention provides a timepiece with a sounding device that is thin, provides sufficient sound pressure, and consumes less current.

［問題点を解決するための手段］ 本発明は、裏蓋を発泡スチロール系樹脂で構成し、これ
に圧電振動板を貼着するようにしたものである。[Means for Solving the Problems] According to the present invention, the back cover is made of a foamed polystyrene resin, and a piezoelectric diaphragm is attached to the back cover.

［実施例］ 第１図および第゛２図において、１は時計枠、２はこの
枠１にネジ止めした後枠である。３はこの後枠にネジ止
めした発砲スチロール系樹脂からなる裏蓋でその外周に
は適宜の高さの立上りを形成してあって後枠２との間に
適度の空間を形成している。裏蓋３の内面やや下方には
穴３ａを穿設してあり、この内面側に圧電振動板４を貼
着しである。圧電振動板４は黄銅板４ａとこれに貼着し
た圧電振動子４ｂとからなっている。。５は報時機能を
有した時計体で、リード線によって圧電振動板４に結合
されている。、６は掛止め具である。[Example] In FIGS. 1 and 2, 1 is a watch frame, and 2 is a rear frame screwed to this frame 1. Reference numeral 3 denotes a back cover made of styrene foam resin that is screwed to the rear frame, and has a rising edge of an appropriate height on its outer periphery to form an appropriate space between it and the rear frame 2. A hole 3a is formed in the inner surface of the back cover 3, slightly below, and a piezoelectric diaphragm 4 is adhered to this inner surface. The piezoelectric diaphragm 4 consists of a brass plate 4a and a piezoelectric vibrator 4b attached thereto. . Reference numeral 5 denotes a watch body having a time reporting function, which is connected to the piezoelectric diaphragm 4 by a lead wire. , 6 are latches.

７〜７は後枠２に形成した保護ダボで、本時計を壁に掛
けたときに裏蓋３が壁に接しないようにするためのもの
である。7 to 7 are protective dowels formed on the rear frame 2 to prevent the back cover 3 from touching the wall when the watch is hung on the wall.

以上のような構成のため、正時に時計体５から報時出力
が発生して圧電振動体４が駆動されると、裏蓋３が共鳴
体として機能し、圧電振動板４の振動が増幅されて充分
な音圧の報時音が得られる。Due to the above configuration, when a time signal output is generated from the watch body 5 on the hour and the piezoelectric vibrating body 4 is driven, the back cover 3 functions as a resonator, and the vibration of the piezoelectric vibrating plate 4 is amplified. A time signal with sufficient sound pressure can be obtained.

なお本発明は、アラーム時計にも同様に適用することが
できる。Note that the present invention can be similarly applied to an alarm clock.

［発明の効果］ 本発明によれば、裏蓋を発泡スチロール系樹脂で構成し
、これに圧電振動板を貼着するようにしたので、裏面全
体が共鳴体となり、低消費電流の圧電振動板でも充分な
音圧が得られる。しかも、裏蓋とスピーカを兼用してい
るため、スペースファクターがよく、薄形化が可能にな
る。また従来のムービングコイル形スピーカの場合には
、音出し方向、音出し口の開口率等が問題になったが、
本発明によれば、これらの問題がなくなり、設計、製造
が容易になる。[Effects of the Invention] According to the present invention, since the back cover is made of styrofoam resin and the piezoelectric diaphragm is attached to this, the entire back surface becomes a resonator, and even a piezoelectric diaphragm with low current consumption can be used. Sufficient sound pressure can be obtained. Furthermore, since the back cover and speaker are both used, the space factor is good and it is possible to make the camera thinner. In addition, in the case of conventional moving coil speakers, issues such as the direction of sound output and the aperture ratio of the sound output port were issues.
According to the present invention, these problems are eliminated and design and manufacture become easier.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示した正面図、第２図は第
１図の■−■線断面図である。 ３・・・裏蓋、４・・・圧電振動板 以上FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line ■--■ in FIG. 3...Back cover, 4...Piezoelectric diaphragm or higher

Claims (1)

【特許請求の範囲】[Claims] 発泡スチロール系樹脂で構成した裏蓋に圧電振動板を貼
着し、上記裏蓋を共鳴体としたことを特徴とする発音装
置付き時計。A timepiece with a sounding device characterized in that a piezoelectric diaphragm is attached to a back cover made of styrofoam resin, and the back cover is used as a resonator.
JP13714085A 1985-06-24 1985-06-24 Timepiece with sound generator Pending JPS61294387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13714085A JPS61294387A (en) 1985-06-24 1985-06-24 Timepiece with sound generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13714085A JPS61294387A (en) 1985-06-24 1985-06-24 Timepiece with sound generator

Publications (1)

Publication Number Publication Date
JPS61294387A true JPS61294387A (en) 1986-12-25

Family

ID=15191751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13714085A Pending JPS61294387A (en) 1985-06-24 1985-06-24 Timepiece with sound generator

Country Status (1)

Country Link
JP (1) JPS61294387A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02504561A (en) * 1988-04-08 1990-12-20 エッセルト・メト・インターナツィオナール・プロドゥクツィオーンス・ゲーエムベーハー Anti-theft tags and how to use them

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951985A (en) * 1972-05-19 1974-05-20
JPS59139799A (en) * 1983-01-31 1984-08-10 Sony Corp Flat speaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951985A (en) * 1972-05-19 1974-05-20
JPS59139799A (en) * 1983-01-31 1984-08-10 Sony Corp Flat speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02504561A (en) * 1988-04-08 1990-12-20 エッセルト・メト・インターナツィオナール・プロドゥクツィオーンス・ゲーエムベーハー Anti-theft tags and how to use them

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