JPS5921141U - Negative action electromagnetic brake - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の負作動形電磁ブレーキの一例を制動状態
で示す上半部縦断の側面図、第２図はこの考案の負作動
形電磁ブレーキの第１実施例を制動状態で示す上半部縦
断の側面図、第３図は同じく制動を手動解除した状態で
示す上半部縦断の側面図、第４図は第２実施例を制動手
動解除状態で示す上半部縦断の側面図である。図面にお
いて、Ｂ・・・・・・第１実施例の負作動形電磁ブレー
キ、Ｂ′・・・・・・第２実施例の負作動形電磁ブレー
キ、５・・・・・・ハブ、６・・・・・・ばね、７・・
・・・・アーマチュア、６・・・・・・内極、１０・・
・・・・外極、１１・・・・・・フィールドコア、１２
・・・・・・永久磁石、１３・・・・・・電磁コイル、
１４゜１４′・・・・・・おねじ部、１５．１５’・・
・・・・環状部材、１５ａ、　　１５’　ａ＝前端面、
１５ｂ、１５’ｂ・・・・・・後端面、１５’Ａ・・・
・・・フランジ。 一部２図 〜　　　　　第３図Fig. 1 is a vertical sectional side view of the upper half of an example of a conventional negative actuating electromagnetic brake in a braking state, and Fig. 2 is a top half showing the first embodiment of the negative actuating electromagnetic brake of this invention in a braking state. FIG. 3 is a longitudinal side view of the upper half showing the second embodiment with the brake manually released; FIG. 4 is a longitudinal side view of the upper half showing the second embodiment with the brake manually released. be. In the drawings, B...Negative operating electromagnetic brake of the first embodiment, B'...Negative operating electromagnetic brake of the second embodiment, 5... Hub, 6・・・・・・Spring, 7...
... Armature, 6 ... Inner pole, 10 ...
...Outer pole, 11...Field core, 12
...Permanent magnet, 13...Electromagnetic coil,
14゜14'...Male thread part, 15.15'...
...Annular member, 15a, 15'a=front end surface,
15b, 15'b... Rear end surface, 15'A...
...Flange. Some figures 2 to 3

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 同心環状の内極と外極を背側におｔ）で一連としでなり
、内外極間に永久磁石と消極用電磁コイルを設け、さら
に、前記フィールドコアの前端面へ−の磁気吸着及びフ
ィールドコアからの離間軸線方向動を自在として被制動
回転部材側に取付けるアーマチュアを具備してなる負作
動形電磁ブレーキにおいて、前記フィールドコアの外極
を、軸線方向の中間部で前後に互いに離間した外極前部
と外極後部とからなるものとし、゛かつ、両部のいずれ
か一方に形成したおねじ部に、他方に当接する軸線方向
動を自在とした磁性材製環状部材を螺合してなる負作動
形電磁ブレーキ。A concentric ring-shaped inner pole and an outer pole are connected to each other on the back side, and a permanent magnet and a depolarizing electromagnetic coil are provided between the inner and outer poles. In a negative actuation type electromagnetic brake comprising an armature that can freely move away from the core in an axial direction and is attached to the side of a rotating member to be braked, the outer pole of the field core is connected to an outer pole that is spaced apart from each other in the front and back at an intermediate portion in the axial direction. It consists of a front pole part and a rear part of the outer pole, and an annular member made of a magnetic material that is movable in the axial direction and comes into contact with the other part is screwed into a male threaded part formed on one of the two parts. Negative action type electromagnetic brake.