JPH0828915B2 - Low-leakage speaker - Google Patents
Low-leakage speakerInfo
- Publication number
- JPH0828915B2 JPH0828915B2 JP62096523A JP9652387A JPH0828915B2 JP H0828915 B2 JPH0828915 B2 JP H0828915B2 JP 62096523 A JP62096523 A JP 62096523A JP 9652387 A JP9652387 A JP 9652387A JP H0828915 B2 JPH0828915 B2 JP H0828915B2
- Authority
- JP
- Japan
- Prior art keywords
- shield cover
- low
- magnet
- speaker
- leakage
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は低漏洩スピーカに関するものである。TECHNICAL FIELD The present invention relates to a low-leakage speaker.
従来の技術 第２図は従来例のスピーカの断面図で、１はプレート
Ａ、２はプレートＢ、３はメインマグネット、４はキャ
ンセルマグネット、５はシールドカバー、６はフレーム
である。2. Description of the Related Art FIG. 2 is a cross-sectional view of a conventional speaker, in which 1 is a plate A, 2 is a plate B, 3 is a main magnet, 4 is a cancel magnet, 5 is a shield cover, and 6 is a frame.
従来のダブルマグネット方式のシールドカバー５は図
のように中央部にキャンセルマグネット４内径をガイド
する段差部を設けセンタリングを行うものである。The conventional double magnet type shield cover 5 is provided with a stepped portion for guiding the inner diameter of the cancel magnet 4 in the central portion as shown in the figure for centering.
発明が解決しようとする問題点 現状、スピーカユニットに要求される漏洩レベル、コ
ストは使用されるセットごとに様々である。Problems to be Solved by the Invention Currently, the leakage level and the cost required for the speaker unit vary depending on the set used.
従来のシールドカバー構造ではシールドカバーの内径
ガイドを基本にして、キャンセルマグネットの厚味を変
えるかもしくは、キャンセルマグネットの内径寸法が同
じで外径の異なるキャンセルマグネットを選択するしか
なかった。いずれにしても極狭い範囲でキャンセルマグ
ネットを選択するしかなかった。そのため、同外径寸法
程度で内径ガイド寸法の違うシールドカバーを新規に起
型するしかなく金型費用、材料費共にコスト高の要因と
なっていた。In the conventional shield cover structure, the thickness of the cancel magnet is changed based on the inner diameter guide of the shield cover, or the cancel magnet having the same inner diameter dimension but different outer diameter is selected. In any case, there was no choice but to choose a cancel magnet within an extremely narrow range. For this reason, a new shield cover having the same outer diameter but different inner diameter guide dimensions has to be newly formed, which has been a factor of high cost for both mold cost and material cost.
本発明はこの問題点を解決できる低漏洩スピーカを提
供せんとするものである。The present invention is intended to provide a low-leakage speaker that can solve this problem.
問題点を解決するための手段 この問題を解決するために本発明は内外周側に異なる
種類のキャンセルマグネットをガイドする外側段部と内
側段部を設けたシールドカバーを用いるものである。Means for Solving the Problems In order to solve this problem, the present invention uses a shield cover having an outer step portion and an inner step portion for guiding different types of cancel magnets on the inner and outer peripheral sides.
作用 この構造であれば同一のシールドカバーでもキャンセ
ルマグネットを選択できる範囲が従来の２倍に広がる。Function With this structure, the range in which the cancel magnet can be selected is doubled even with the same shield cover.
実施例 第１図は本発明の実施例を示す低漏洩スピーカの断面
図である。Embodiment FIG. 1 is a sectional view of a low-leakage speaker showing an embodiment of the present invention.
同図のように内周側にキャンセルマグネット４をガイ
ドできる段部を設けシールドカバー５中央部の内側段部
5aでは、スピーカ側メインマグネット３に比べ小さい体
積のキャンセルマグネット４を貼り付けられる構造とし
（同図ａ）、シールドカバー５外周部の外側段部5bでは
スピーカ側マグネット３と同体積又は、若干少ない体積
のキャンセルマグネット４を貼り付けられる構造とした
ものである。（同図ｂ）。As shown in the same figure, a step portion that can guide the cancel magnet 4 is provided on the inner peripheral side, and an inner step portion at the center of the shield cover 5 is provided.
5a has a structure in which the cancel magnet 4 having a smaller volume than the speaker main magnet 3 can be attached (a in the same figure), and the outer step 5b of the outer peripheral portion of the shield cover 5 has the same volume as the speaker magnet 3 or slightly smaller. The structure is such that the volume cancel magnet 4 can be attached. (Figure b).
即ち、漏洩レベルなどによってキャンセリングマグネ
ットの内外周の異なるものを準備し、用途によって適宜
選択し、シールドカバーの内側又は外側のいずれかの段
部でガイドさせることができるのでシールドカバーの金
型の種類を減ずることができるものである。That is, it is possible to prepare a canceling magnet having different inner and outer peripheries depending on the leakage level, etc., select it appropriately according to the application, and guide it at either the inner or outer step of the shield cover. The types can be reduced.
発明の効果 本発明では従来のシールドカバー構造の内外周にそれ
ぞれガイド用の段部を設けただけであり金型費、材料費
共に従来と同等で汎用性の広い低漏洩スピーカを提供で
きる。EFFECTS OF THE INVENTION According to the present invention, a low-leakage speaker having a versatility that is equivalent to the conventional one in mold cost and material cost can be provided only by providing guide steps on the inner and outer circumferences of the conventional shield cover structure.
第１図a,bは本発明の低漏洩スピーカの断面図、第２図
は従来例の断面図である。 １……プレートＡ、２……プレートＢ、３……メインマ
グネット、４……キャンセルマグネット、５……シール
ドカバー、5a……内側段部、5b……外側段部。1 (a) and 1 (b) are sectional views of a low-leakage speaker of the present invention, and FIG. 2 is a sectional view of a conventional example. 1 ... Plate A, 2 ... Plate B, 3 ... Main magnet, 4 ... Cancel magnet, 5 ... Shield cover, 5a ... Inner step, 5b ... Outer step.
Claims (1)
リングマグネットの一方のキャンセリングマグネットの
外周をガイドする外側段部と他方のキャンセリングマグ
ネットの内周をガイドする内側段部をシールドカバーの
底面に設けた低漏洩スピーカ。1. A shield cover has an outer step portion that guides the outer circumference of one of the canceling magnets and an inner step portion that guides the inner circumference of the other canceling magnet on the bottom surface of the shield cover. A low-leakage speaker provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62096523A JPH0828915B2 (en) | 1987-04-20 | 1987-04-20 | Low-leakage speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62096523A JPH0828915B2 (en) | 1987-04-20 | 1987-04-20 | Low-leakage speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63261994A JPS63261994A (en) | 1988-10-28 |
| JPH0828915B2 true JPH0828915B2 (en) | 1996-03-21 |
Family
ID=14167498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62096523A Expired - Fee Related JPH0828915B2 (en) | 1987-04-20 | 1987-04-20 | Low-leakage speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0828915B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR199800366T1 (en) * | 1995-09-02 | 1998-05-21 | New Transducers Limited | Inertial vibration transducers. |
| US6003766A (en) | 1995-09-02 | 1999-12-21 | New Transducers Limited | Vending machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6172992U (en) * | 1984-10-19 | 1986-05-17 |
-
1987
- 1987-04-20 JP JP62096523A patent/JPH0828915B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63261994A (en) | 1988-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |