JPH0527718Y2

JPH0527718Y2 -

Info

Publication number: JPH0527718Y2
Application number: JP7171888U
Authority: JP
Priority date: 1988-06-01
Filing date: 1988-06-01
Publication date: 1993-07-15
Anticipated expiration: 2003-06-01
Also published as: JPH01176232U

Description

【考案の詳細な説明】［産業上の利用分野］本考案は電磁ブレーキ等の電磁連結装置の改良
に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to improvements in electromagnetic coupling devices such as electromagnetic brakes.

［従来の技術］従来の電磁ブレーキは、第３図イに示すように
構成される。同図中、１は磁極で、断面コ字状の
ヨーク２とこのヨーク２の上端外周部２ａに圧入
されるインロー部３ａを有するアダプタマグネツ
ト３と、非磁性体材料より成るシム４を結合して
構成される。５はアダプタマグネツト３をヨーク
２に密着させるために円周上に複数個ねじ込まれ
る座ビスである。６は磁極１の凹部に収納した励
磁用のコイルである。７は摩擦板で、ヨーク２の
前面部に嵌め込まれている。８はボルトで、アダ
プタマグネツト３したがつて磁極１を固定部（省
略）に固着させるためのものである。９はアマチ
ユアで、アウターハブ１０に対して復帰用のばね
１１を介して取付けられる。１２はインナーハブ
でアウターハブ１０に対しスプライン結合され基
部は回転軸１３に固着される。なお、この回転軸
１３に負荷（図示せず）が連結される。１４はコ
イル６に対して給電用のリード線である。[Prior Art] A conventional electromagnetic brake is constructed as shown in FIG. 3A. In the figure, reference numeral 1 denotes a magnetic pole, which connects a yoke 2 having a U-shaped cross section, an adapter magnet 3 having a spigot part 3a that is press-fitted into the upper outer peripheral part 2a of this yoke 2, and a shim 4 made of a non-magnetic material. It is composed of Reference numeral 5 designates a plurality of seat screws that are screwed in around the circumference in order to bring the adapter magnet 3 into close contact with the yoke 2. 6 is an excitation coil housed in the recess of the magnetic pole 1 . A friction plate 7 is fitted into the front surface of the yoke 2. Numeral 8 is a bolt for fixing the adapter magnet 3 and therefore the magnetic pole 1 to a fixed part (not shown). Reference numeral 9 is an armature arm which is attached to the outer hub 10 via a return spring 11. Reference numeral 12 denotes an inner hub that is spline-coupled to the outer hub 10 and has a base fixed to a rotating shaft 13. Note that a load (not shown) is connected to this rotating shaft 13. 14 is a lead wire for feeding power to the coil 6.

以上の構成において、コイル６を励磁すると、
アマチユア９がばね１１の反発力に抗して磁極１
のヨーク２に吸着され、アマチユア９、ハブ１
０，１２および回転軸１３を介して負荷に対して
制動力が働き、コイル６の励磁を断つとばね１１
の反発力によりアマチユア９の磁極１との吸着が
解かれるため、負荷に対する制動力は消滅する。
なお、このコイル６の消磁の際、シム４は残留磁
束を遮断し、アマチユア９の解放は円滑に行われ
る。 In the above configuration, when the coil 6 is excited,
Amateur 9 resists the repulsive force of spring 11 and magnetic pole 1
It is attracted to the yoke 2 of the
0, 12 and the rotating shaft 13, and when the excitation of the coil 6 is cut off, the spring 11
Since the armature 9 is no longer attracted to the magnetic pole 1 by the repulsive force, the braking force against the load disappears.
Note that when the coil 6 is demagnetized, the shim 4 blocks the residual magnetic flux, and the armature 9 is smoothly released.

［考案が解決しようとする課題］ところで、上記従来の電磁ブレーキの磁極１の
組み立ては、ヨーク２の凹部にコイル６を予め収
納しておき、アダプターマグネツト３のインロー
３ａをヨーク２の上端外周部２ａに対して圧入す
ると共に、シム４を介して座ビス５を捩込むこと
により行つていた。[Problem to be solved by the invention] By the way, in order to assemble the magnetic pole 1 of the conventional electromagnetic brake described above, the coil 6 is housed in the recess of the yoke 2 in advance, and the spigot 3a of the adapter magnet 3 is connected to the outer circumference of the upper end of the yoke 2. This was done by press-fitting into the portion 2a and screwing in the seat screw 5 via the shim 4.

ところで、こような構成の電磁ブレーキはヨー
ク２にアダプタマグネツト３を圧入する時に、第
３図ハに示すように、圧入先端部Ｂの矢印Ｆ方向
に荷重が作用し、そのまま圧入工程が完了する
と、機械静止部への取付面となるアダプタマグネ
ツト３の背面がお椀状に弯曲して取付面に〓間
（ガタ）を生じ、熱伝導が悪くなり、放熱効果が
低下する。 By the way, when the electromagnetic brake having such a configuration is press-fitting the adapter magnet 3 into the yoke 2, a load acts on the press-fitting tip B in the direction of the arrow F, as shown in Fig. 3C, and the press-fitting process is completed. Then, the back surface of the adapter magnet 3, which is the mounting surface to the stationary part of the machine, is curved into a bowl shape, creating a gap (backlash) in the mounting surface, which impairs heat conduction and reduces the heat dissipation effect.

また、取付ボルトを締め上げると、摩擦面に歪
みが生じて機能に悪影響を及ぼすという問題があ
つた。 Additionally, there was a problem in that when the mounting bolts were tightened, the friction surfaces were distorted, which adversely affected functionality.

［課題を解決するための手段］当該電磁ブレーキ等の電磁連結装置の磁極であ
つて励磁コイルを収納した断面コ字状のヨーク、
このヨークと上端外周部でインロー結合し、下端
外周部に座ビスで結合するようにしたアダプタマ
グネツトにより構成し、前記ヨークをはさんでア
ダプタマグネツトとは反対側に配置される復帰ば
ね付きのアマチユアを備え、上記磁極の励磁また
は消磁によりアマチユアとの吸着または吸着解放
を行うようにした電磁連結装置において、上記ア
ダプタマグネツトとしてそのインロー部の先端に
面取り部を形成したものを用いるように構成し
た。[Means for solving the problem] A yoke with a U-shaped cross section that is a magnetic pole of an electromagnetic coupling device such as an electromagnetic brake and houses an excitation coil;
It is constructed of an adapter magnet which is connected to the yoke by a spigot at the outer periphery of the upper end and with a seat screw at the outer periphery of the lower end, and includes a return spring located on the opposite side of the adapter magnet across the yoke. In the electromagnetic coupling device, which is equipped with an armature and is configured to attract or release the armature by excitation or demagnetization of the magnetic pole, the adapter magnet may have a chamfered portion formed at the tip of the spigot part. Configured.

この場合、上記アダプタマグネツトとしてその
インロー部の先端に面取り部を形成することに代
え、段落部を形成したものを用いるようにしても
良い。 In this case, instead of forming a chamfered part at the tip of the spigot part of the adapter magnet, a stepped part may be used.

［実施例］以下第１図および第２図に示す本考案の第１お
よび第２の各実施例について説明する。[Embodiments] The first and second embodiments of the present invention shown in FIGS. 1 and 2 will be described below.

各図において第３図と均等な構成についてはこ
れと同等な符号を付して示した。 In each figure, components equivalent to those in FIG. 3 are designated by the same reference numerals.

第１図は本考案の第１の実施例を示すもので、
アダプタマグネツト３は圧入部が板厚の略中央と
なるように、そのインロー部３ａの先端部に図示
のように面取り部３a₁を形成した点に特徴があ
り、このような構成のアダプタマグネツト３′を
コイル６が収納されたヨーク２の外端外周部２ａ
に対して圧入し、一方、ヨーク２の内端外周部２
ｂに対してアダプタマグネツト３′の下端部３ｂ
をシム４を介して座ビス５により固着する。 FIG. 1 shows a first embodiment of the present invention.
The adapter magnet 3 is characterized in that a chamfered part _3a1 is formed at the tip of the pilot part 3a as shown in the figure so that the press-fitted part is approximately at the center of the plate thickness. The net 3' is connected to the outer peripheral part 2a of the yoke 2 in which the coil 6 is housed.
On the other hand, the inner end outer peripheral part 2 of the yoke 2
lower end 3b of adapter magnet 3' relative to b
are fixed with seat screws 5 via shims 4.

また、本考案の第２の実施例では、アダプタマ
グネツト３″として、第２図に示すように、イン
ロー部を面取りに代えて段落部３a₂を形成したも
のを用い、後は第１の実施例の場合と全く同様に
してヨーク２，シム４との結合し、磁極を構成す
るようにしたものである。 In addition, in the second embodiment of the present invention, as shown in FIG. 2, the adapter magnet 3'' has a step part _3a2 instead of a chamfered pilot part, and the rest is the same as the first one. The yoke 2 and the shim 4 are combined to form a magnetic pole in exactly the same manner as in the embodiment.

なお、上記各実施例共に、電磁ブレーキで説明
したが、磁極１を駆動用の負荷に固着すれば、本
考案は電磁クラツチに対しても適用できることは
言うまでもないところである。 Although each of the above embodiments has been described using an electromagnetic brake, it goes without saying that the present invention can also be applied to an electromagnetic clutch by fixing the magnetic pole 1 to a driving load.

［作用］本考案の第１および第２の各実施例共上記のよ
うに磁極が構成されるが、第１の実施例のもので
は、アダプタマグネツト３′のインローの先端部
に面取り部３a₁を設けためトルク伝達はインロー
の中央部Ａで行うことができ、一方、第２の実施
例の場合も、アダプタマグネツト３″の先端部に
段落部３a₂を形成したため、この場合にもトルク
伝達はインローの中央部Ａで行うことができるよ
うになつた。[Function] Both the first and second embodiments of the present invention have magnetic poles constructed as described above, but in the first embodiment, a chamfered portion 3a is provided at the tip of the pilot of the adapter magnet 3'. ₁ , torque transmission can be carried out at the central part A of the spigot. On the other hand, in the case of the second embodiment as well, since the stepped part _3a2 is formed at the tip of the adapter magnet 3'', Torque transmission can now be carried out at the center part A of the spigot.

［考案の効果］本考案の電磁連結装置では、上記第１および第
２の各実施例で示したように、アダプタマグネツ
トのインロー部先端にに形成した面取り部３a₁ま
た段落部３a₂の存在により、トルク伝達はインロ
ー部の中央部Ａで行うように是正されたため、圧
入されたアダプタマグネツトが電磁連結装置の運
転によつて弯曲は生じることはなく、磁極は歪ま
ず、したがつて、ガタによる悪影響は全て除去さ
れるという優れた効果を有する。[Effects of the invention] In the electromagnetic coupling device of the invention, as shown in the first and second embodiments, the chamfered portion 3a ₁ and stepped portion 3a ₂ formed at the tip of the spigot part of the adapter magnet. Because of this, the torque transmission is corrected to take place at the center part A of the spigot part, so the press-fitted adapter magnet will not be bent by the operation of the electromagnetic coupling device, and the magnetic pole will not be distorted. This has the excellent effect of eliminating all the negative effects caused by backlash.

[Brief explanation of the drawing]

第１図および第２図は本考案の第１および第２
の各実施例を示すもので、その内第１図は半部縦
断正面図、第２図は正面略図、第３図は従来例を
示すもので、その内、イは半部縦断正面図、ロお
よびハはそれぞれ正面略図である。１……磁極、２……ヨーク、３……アダプター
マグネツト、３ａ……インロー部、３a₁……面取
り部、３a₂……段部。 Figures 1 and 2 are the first and second figures of the present invention.
Fig. 1 is a half longitudinal sectional front view, Fig. 2 is a schematic front view, and Fig. 3 is a conventional example, in which A is a half longitudinal sectional front view; B and C are front schematic views, respectively. 1 ...magnetic pole, 2...yoke, 3...adapter magnet, 3a...spigot part, _3a1 ...chamfered part, _3a2 ...stepped part.

Claims

[Scope of Claim for Utility Model Registration] 1. A yoke that is a magnetic pole of an electromagnetic coupling device such as an electromagnetic brake and has a U-shaped cross section and houses an excitation coil, which is connected to the yoke with a spigot at the outer periphery of the upper end and is seated on the outer periphery of the lower end. It is composed of adapter magnets that are connected with screws, and includes an armature with a return spring placed on the opposite side of the adapter magnet across the yoke, and the armature is attracted to the armature by excitation or demagnetization of the magnetic pole. Alternatively, an electromagnetic coupling device which performs attraction and release, characterized in that the adapter magnet has a chamfered portion formed at the tip of the spigot portion. 2. A yoke that is a magnetic pole of an electromagnetic coupling device such as the electromagnetic brake and has a U-shaped cross section and houses an excitation coil, and an adapter that is connected to this yoke with a spigot at the outer periphery of the upper end and with a seat screw at the outer periphery of the lower end. The armature is composed of a magnet and has a return spring disposed on the opposite side of the adapter magnet across the yoke, and the armature is attracted to or released from the armature by excitation or demagnetization of the magnetic pole. An electromagnetic coupling device characterized in that the adapter magnet has a stepped portion formed at the tip of the spigot portion.