JPH0246495U - - Google Patents
Info
- Publication number
- JPH0246495U JPH0246495U JP12538588U JP12538588U JPH0246495U JP H0246495 U JPH0246495 U JP H0246495U JP 12538588 U JP12538588 U JP 12538588U JP 12538588 U JP12538588 U JP 12538588U JP H0246495 U JPH0246495 U JP H0246495U
- Authority
- JP
- Japan
- Prior art keywords
- pole piece
- main magnet
- base plate
- hole
- forms
- 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
Links
- 230000004907 flux Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
第１図はこの考案の低漏洩磁束形スピーカーユ
ニツトの一半を示す垂直断面図、第２図はこの考
案のバツクカバー付シールドカバーの他の実施例
を示すその一半の垂直断面図、第３図は第１図の
さらに他の実施例を示すその一半の垂直断面図、
第４図は従来の低漏洩磁束形スピーカーユニツト
の一半を示す垂直断面図である。
なお図中１はポールピース、１ａは貫通穴、１
ｂはベースプレート、２は主マグネツト、３はト
ツププレート、４はキヤンセルマグネツト、１０
はバツクカバー付シールドカバー、Ａはバツクキ
ヤビテイ、Ｇは磁気ギヤツプである。その他図中
同一符号は同一部分を示すものとする。
Fig. 1 is a vertical sectional view showing one half of the low leakage flux type speaker unit of this invention, Fig. 2 is a vertical sectional view of one half showing another embodiment of the shield cover with back cover of this invention, and Fig. 3 is a vertical sectional view of one half of the low leakage magnetic flux speaker unit of this invention. A vertical sectional view of one half of the embodiment shown in FIG. 1,
FIG. 4 is a vertical sectional view showing one half of a conventional low leakage magnetic flux type speaker unit. In the figure, 1 is the pole piece, 1a is the through hole, 1
b is the base plate, 2 is the main magnet, 3 is the top plate, 4 is the cancel magnet, 10
is a shield cover with a back cover, A is a back cavity, and G is a magnetic gap. In other figures, the same reference numerals indicate the same parts.
Claims (1)
主マグネツトを固定させたポールピース、上記主
マグネツト上に固定され上記ポールピースとの間
に磁気ギヤツプを形成するトツププレート、上記
主マグネツトと逆方向に磁化され上記ベースプレ
ートの下面に接着されたキヤンセルマグネツトを
備えたものにおいて、これらを収納し上記貫通穴
の背部にバツクキヤビテイを形成するバツクカバ
ー付シールドカバーを、高剛性でかつ内部損失の
大きな磁性体鋳物で一体化成形したことを特徴と
する低漏洩磁束形スピーカーユニツト。 A pole piece that has a through hole in the center and has a main magnet fixed on its base plate, a top plate that is fixed on the main magnet and forms a magnetic gap with the pole piece, and a pole piece that is arranged in a direction opposite to the main magnet. In a device equipped with a cancelel magnet magnetized and bonded to the lower surface of the base plate, a shield cover with a back cover that accommodates these and forms a back cavity at the back of the through hole is made of a magnetic casting with high rigidity and large internal loss. A low leakage magnetic flux type speaker unit characterized by being integrally molded with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12538588U JPH0246495U (en) | 1988-09-26 | 1988-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12538588U JPH0246495U (en) | 1988-09-26 | 1988-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246495U true JPH0246495U (en) | 1990-03-29 |
Family
ID=31375949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12538588U Pending JPH0246495U (en) | 1988-09-26 | 1988-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246495U (en) |
-
1988
- 1988-09-26 JP JP12538588U patent/JPH0246495U/ja active Pending
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