JPS6188032A - electromagnetic brake - Google Patents
electromagnetic brakeInfo
- Publication number
- JPS6188032A JPS6188032A JP20811584A JP20811584A JPS6188032A JP S6188032 A JPS6188032 A JP S6188032A JP 20811584 A JP20811584 A JP 20811584A JP 20811584 A JP20811584 A JP 20811584A JP S6188032 A JPS6188032 A JP S6188032A
- Authority
- JP
- Japan
- Prior art keywords
- movable plate
- electromagnet
- friction disk
- recess
- electromagnetic brake
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/28—Brakes with only one rotating disc
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
- F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0058—Fully lined, i.e. braking surface extending over the entire disc circumference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
- F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Braking Arrangements (AREA)
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
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、電動機等の回転電機に使用する電磁ブレーキ
に係り、特に制動時に生じる鳴き音を低減すべくなした
電磁ブレーキに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an electromagnetic brake used in a rotating electric machine such as an electric motor, and more particularly to an electromagnetic brake designed to reduce squealing noise generated during braking.
に−コイル２とこれを内蔵したヨーク５とで電磁石１を
構成し、その電磁石１に固定板４を固定すると共に、該
固定板４と電磁石１との間に可動板５を軸方向に移動可
能に取付けている。前記固定板４は−ヨーク３の側部に
螺合したスタッド６に座金７．ナツト８によって固定し
ている。前記可動板５は、スタッド６の軸方向の途中位
置に形成した段付部６ａを挿通して、固定板４とヨーク
３との間で軸方向に移動できるようになっている。- The coil 2 and the yoke 5 containing the coil constitute an electromagnet 1, and a fixed plate 4 is fixed to the electromagnet 1, and a movable plate 5 is moved in the axial direction between the fixed plate 4 and the electromagnet 1. Installed as possible. The fixing plate 4 has a stud 6 screwed onto the side of the yoke 3 and a washer 7. It is fixed with nut 8. The movable plate 5 can be moved in the axial direction between the fixed plate 4 and the yoke 3 by passing through a stepped portion 6a formed in the middle of the stud 6 in the axial direction.
一方、電動機などの回転軸Ａには、摩擦円板９を軸方向
に移動可能に取付けて、その摩擦円板９を可＃ｈｌｌ１
５と固定板４との間に配置している。摩擦円板９は、ス
プラインカラー１０に軸方向に移動可能に取付けている
。スプラインカラー１０は前記回転軸Ａの一端部にリン
グ１３によって回転できるように取付けている。また摩
擦円板９０両面にはブレーキライニング１１を貼着して
いる。On the other hand, a friction disk 9 is attached to a rotating shaft A of an electric motor or the like so that it can move in the axial direction, and the friction disk 9 is movable in the axial direction.
5 and the fixed plate 4. The friction disk 9 is attached to the spline collar 10 so as to be movable in the axial direction. The spline collar 10 is rotatably attached to one end of the rotating shaft A by a ring 13. Further, brake linings 11 are attached to both surfaces of the friction disk 90.
他方、摩擦臼＆９に可動板５を付勢させる為、可動板５
とヨーク３に設けた凹３ａとの間にばね１２を配設して
いる。該ばね１２は、コイルスプリングからなっており
、その弾性力によって可動板５を摩擦円板９に付勢させ
ることにより、可動板５と固定板４とで摩擦円板９を挾
持させることができるよう＃Ｃシている。 □こ
の電磁ブレーキは電磁石１を励磁すると、可動板５がば
ね１１０弾性力に抗しストロークＳの距離を移動し、ヨ
ーク３に吸引されることにより、摩擦円板９を固定板４
と可動板５との挟持から解除させ、これによって回転軸
Ａの制動を釈放できるようになっている。また、電磁石
１の励磁を解除すると、可動板５がばね口の弾性力によ
って摩擦円板９側へ移動することにより可動板５と固定
板４とで摩擦円板９を挾持し、これによって回転軸Ａの
回転を停止できるようになっている。その場合、可動板
５が電磁石１かも速やかに移動できるようにする為、第
３図に示すように、可動板５の電磁石１と当接する面５
ａには、適度の寸法Ｇ、をもって凹ませたエアギツプ用
の＄５１を内周部に形成している。つまり、この溝５１
は電磁石の励磁を解除した時に生じる電磁石１の残留磁
気の影響を減らすことにある。On the other hand, in order to urge the movable plate 5 to the friction mill &9, the movable plate 5
A spring 12 is disposed between the recess 3a provided in the yoke 3 and the recess 3a provided in the yoke 3. The spring 12 is made of a coil spring, and by urging the movable plate 5 against the friction disk 9 by its elastic force, the friction disk 9 can be held between the movable plate 5 and the fixed plate 4. It's like #C. □In this electromagnetic brake, when the electromagnet 1 is excited, the movable plate 5 moves a distance of stroke S against the elastic force of the spring 110, and is attracted by the yoke 3, thereby moving the friction disk 9 to the fixed plate 4.
and the movable plate 5, thereby releasing the braking of the rotating shaft A. Furthermore, when the electromagnet 1 is de-energized, the movable plate 5 moves toward the friction disk 9 due to the elastic force of the spring mouth, thereby sandwiching the friction disk 9 between the movable plate 5 and the fixed plate 4, thereby causing rotation. The rotation of axis A can be stopped. In that case, in order to allow the movable plate 5 to quickly move the electromagnet 1, as shown in FIG.
In a, a hole 51 for an air cast, which is recessed with an appropriate size G, is formed on the inner circumference. In other words, this groove 51
The objective is to reduce the influence of residual magnetism of the electromagnet 1 that occurs when the electromagnet is de-energized.
ところで、電磁ブレーキの制動時、ばね１２の力が可動
板５を介して摩擦円板９に作用するため、可動板５が振
動して可動板５と摩擦円板９とに極めて大きな鳴き音が
発生し、このため、鳴き音を低減させることが要請され
る。By the way, when the electromagnetic brake is applied, the force of the spring 12 acts on the friction disk 9 via the movable plate 5, so the movable plate 5 vibrates and an extremely loud squealing noise is produced between the movable plate 5 and the friction disk 9. Therefore, it is required to reduce the squealing noise.
そのため、従来の電磁ブレーキは、第３図に示すように
、可動板５の摩擦円板９と当接する面５ｂに、上田弧部
が適度の寸法ｔ１をもって凹んだ凹部５２を形成上てい
る。そして可動板５が摩擦円板９に接触するとき、その
面ｓｂの前記凹部５２を除いた部分だけが瞬間的に接触
することにより、制動時に生じる鳴き音を低減させるよ
うにしている０
しかし乍ら、可動板５の面５ｂに凹部５２を設けると、
摩擦円板９に対し可動板５の接触面圧が大きくなるので
、鳴き音をさら忙低減させることが難しく、むしろ摩擦
円板９に設けたライニング１１に著しい摩耗が生じる不
具合がある。Therefore, in the conventional electromagnetic brake, as shown in FIG. 3, a recess 52 is formed on the surface 5b of the movable plate 5 that contacts the friction disk 9, in which the Ueda arc is recessed with an appropriate dimension t1. When the movable plate 5 comes into contact with the friction disk 9, only the portion of the surface sb excluding the recess 52 comes into contact momentarily, thereby reducing the squealing noise generated during braking. Furthermore, if a recess 52 is provided on the surface 5b of the movable plate 5,
Since the contact surface pressure of the movable plate 5 with respect to the friction disk 9 becomes large, it is difficult to further reduce the squealing noise, and there is a problem in that the lining 11 provided on the friction disk 9 is considerably worn.
′Ｘ発明は、上記１刊情に鑑み、制動時に生じる鳴き音
をよりいっそう減少させることができると共に、摩擦円
板のライニングが異常に摩耗するのを防止することがで
きる電磁ブレーキを桿供せんとするものである。In view of the above-mentioned circumstances, the 'X invention provides an electromagnetic brake that can further reduce the squealing noise generated during braking and can prevent the lining of the friction disk from being abnormally worn. That is.
前記の目的を達成せんがため、本発明は、可動板と電磁
石とのうち、何れか一方にはその仙方と当接し得る面に
、対応する位置と非対称の形状をなすエアギャップ用の
凹部を形成し、電磁石の励磁を解除したとき、その電磁
石から離れる可動板が、前記凹部と対応する部分と他の
部分とをｊ−次ＦＰ、擦円板に当接させるようにしたも
のである。In order to achieve the above-mentioned object, the present invention provides a recess for an air gap having a shape asymmetrical to the corresponding position on the surface of either the movable plate or the electromagnet that can come into contact with the sacrum of the movable plate or the electromagnet. is formed, and when the electromagnet is de-energized, the movable plate that separates from the electromagnet brings the part corresponding to the recessed part and other parts into contact with the j-order FP and the friction disk. .
以下、本発明の実施例を第４図乃至第５図に従って説明
する。舛４図及び第５図は本発明による電磁ブレーキを
電動機に適用した第１の実施例を示し、同図において従
来例と同一部分には同一符号を付している。Embodiments of the present invention will be described below with reference to FIGS. 4 and 5. 4 and 5 show a first embodiment in which the electromagnetic brake according to the present invention is applied to an electric motor, and in these figures, the same parts as in the conventional example are given the same reference numerals.
実施例の電磁ブレーキは、電磁石１と、その電磁石１に
固定した固定板４と、その固定板４及び電磁石１の間に
軸方向に移動可能に取付けた可動板５と、電動機の回転
軸Ａに軸方向に移動可能に取付け、かつ可動板５及び固
定板４０間に配置した摩擦円板９と、前記可動板５を摩
擦円板９に付勢させるばね１１とを備えている。この点
は従来と同様である。The electromagnetic brake of the embodiment includes an electromagnet 1, a fixed plate 4 fixed to the electromagnet 1, a movable plate 5 mounted so as to be movable in the axial direction between the fixed plate 4 and the electromagnet 1, and a rotating shaft A of the electric motor. The friction disk 9 is mounted movably in the axial direction and disposed between the movable plate 5 and the fixed plate 40, and a spring 11 biases the movable plate 5 against the friction disk 9. This point is the same as before.
しかして、前記可動板５の電磁石１と当接し得る而５ａ
には、対応する位置と非対称の形状をなす凹部５２を形
成している。該凹部５２は、第５図に明示するように、
前記面５ａにおいてその下半分ａと上半分すとが非対称
の形状となるように、例えば下半分ａを上半分すより適
度の寸法Ｇ２をもって凹ませている。つまり、凹部５２
の形成によって可動板５の下半分ａと上半分すとをアン
バランスさせている。Therefore, the movable plate 5 can come into contact with the electromagnet 1 5a.
A recess 52 is formed in the shape of the recess 52 which is asymmetrical to the corresponding position. As clearly shown in FIG.
For example, the lower half a is recessed by an appropriate dimension G2 than the upper half so that the lower half a and the upper half of the surface 5a have an asymmetrical shape. In other words, the recess 52
By forming this, the lower half a and the upper half of the movable plate 5 are made unbalanced.
このような構成にすると、電磁石１の励磁を解除したと
き、電磁石１のヨーク３から可動板５の離れるタイミン
グは凹部５２を有する下半分ａが前記上半分すより一瞬
早くなることになる。したがって摩擦円板９に対し可動
板５の他の面５ａが、下半分ａと上半分すとを順次接触
させることができるようになっている。従って、可動板
５は電磁石１の励磁を解除したとき、摩擦円板９に対す
る接触を、下半分と上半分との２段で行うようになって
いる。なお、可動板５０面５ｂは全周に亘って平面をな
している。なお、第５図において５Ｃはスタット挿通孔
、５ｄは回転軸挿通孔である。With this configuration, when the electromagnet 1 is de-energized, the timing at which the movable plate 5 separates from the yoke 3 of the electromagnet 1 is instantaneously earlier for the lower half a having the recess 52 than for the upper half. Therefore, the other surface 5a of the movable plate 5 can sequentially bring the lower half a and the upper half into contact with the friction disk 9. Therefore, when the electromagnet 1 is de-energized, the movable plate 5 makes contact with the friction disk 9 in two stages, the lower half and the upper half. Note that the surface 5b of the movable plate 50 is flat over the entire circumference. In addition, in FIG. 5, 5C is a stud insertion hole, and 5d is a rotating shaft insertion hole.
上記の如く構成した電磁ブレーキは、電磁石１の励磁が
解除されると、可動板５がばね１２０弾性力によって電
磁石１から離れ、摩擦円板９に接触する。その際、可動
板５０面５ａに形成した凹部５２により、他の面５ｂが
凹部５２と対応する部分と、凹部５２と対応しない部分
との２段階で摩擦円板９に接触するので〜摩擦円板９に
対する可動板５の衝撃力が分散されて、可動板５の振動
を確実に小さくすることができる。In the electromagnetic brake configured as described above, when the electromagnet 1 is de-energized, the movable plate 5 separates from the electromagnet 1 due to the elastic force of the spring 120 and comes into contact with the friction disk 9. At this time, due to the recess 52 formed in the surface 5a of the movable plate 50, the other surface 5b contacts the friction disk 9 in two stages: a portion corresponding to the recess 52 and a portion not corresponding to the recess 52. The impact force of the movable plate 5 on the plate 9 is dispersed, and the vibration of the movable plate 5 can be reliably reduced.
その結果、制動時に生じる鳴き音をいっそう低減させる
ことができる。しかも、可動板５０面５ｂが全周に亘っ
て平面であるから、可動板５が摩耗円板９のブレーキラ
イニング１１に接触した時、そのブレーキライニング１
１に対する接触圧を一様にさせることができ、ブレーキ
ライニング１１が異常に摩耗するのを防止することもで
きる。As a result, the squealing noise generated during braking can be further reduced. Moreover, since the surface 5b of the movable plate 50 is flat over the entire circumference, when the movable plate 5 contacts the brake lining 11 of the wear disc 9, the brake lining 1
The contact pressure against the brake lining 11 can be made uniform, and abnormal wear of the brake lining 11 can also be prevented.
なお図示実施例では、凹部５２を可動板５の面５ａに形
成した例を示したが、本発明においては、そわに限定さ
れるものではない。即ち、第６図に示すように、電磁石
ヨーク３の可動板５と当接する面３１１＋に前記凹部５
２を形成し、電磁石１の励磁を解除したとき、その凹部
５２によって摩擦円板９に対し可動板５を二段階で接触
させることにより、前述の実施例と同様の効果を得るこ
とができる。Although the illustrated embodiment shows an example in which the recess 52 is formed on the surface 5a of the movable plate 5, the present invention is not limited to the recess 52 formed in the surface 5a of the movable plate 5. That is, as shown in FIG.
2, and when the electromagnet 1 is de-energized, the movable plate 5 is brought into contact with the friction disk 9 in two stages through the concave portion 52, thereby achieving the same effect as in the previous embodiment.
以上述べたように、本発明によれば、可動板と電磁石と
のうち、何れか一方には他方と当接し得る面に、凹部を
対応する位置と非対称の形状をなして形成し、電磁石の
励磁を解除した時に、可動板が摩擦円板に二段階で接触
することによって可動板の振動を小さくすることができ
るように構成したので、制動時に生じる鳴き音を確実に
かついっそう低減させることができ、しかも特殊な部品
を同等使用することもないので、コストの高騰を抑える
こともできる。As described above, according to the present invention, a recess is formed in the surface of either the movable plate or the electromagnet, which can come into contact with the other, in an asymmetrical shape with respect to the corresponding position, so that the electromagnet When the excitation is released, the vibration of the movable plate can be reduced by contacting the friction disk in two stages, so the squealing noise generated during braking can be reliably and further reduced. Moreover, since no special parts are required, it is possible to suppress the increase in costs.
第１図は従来の電磁ブレーキを示す正面図、第２図は第
１図のＩ−Ｔ線に対応する断面図、第３図（ａ）及び（
ｂ）は従来の電磁ブレーキに用いた可動板を示す正面図
及び側面断面図、第４図は本発明による電磁ブレーキを
電動機に適用した第１の実施例を示す断面図、第５図（
ａ）及び（ｂｌは可動板を示す正面図及び側面断面図、
第６図は本発明による電磁ブレーキの他の実施例を示す
電磁石の側面断面図である。
１・・・電磁石、２・・・コイル、３・・・ヨーク、４
・・・固定板、５・・・可動板、５ａ、５ｂ・・・面、
４２・・・エアギャップ用凹部、９・・・摩擦円板、１
２・・・ばね、Ａ烏 （凹
第 ２ 図
早 ３
（ａ）
閏
（ｂ）
第４図
＄６ 図Fig. 1 is a front view showing a conventional electromagnetic brake, Fig. 2 is a sectional view corresponding to the IT line in Fig. 1, and Figs. 3(a) and (
b) is a front view and side sectional view showing a movable plate used in a conventional electromagnetic brake, FIG. 4 is a sectional view showing a first embodiment in which the electromagnetic brake according to the present invention is applied to an electric motor, and FIG.
a) and (bl is a front view and side sectional view showing the movable plate,
FIG. 6 is a side sectional view of an electromagnet showing another embodiment of the electromagnetic brake according to the present invention. 1... Electromagnet, 2... Coil, 3... Yoke, 4
... Fixed plate, 5... Movable plate, 5a, 5b... Surface,
42... Air gap recess, 9... Friction disk, 1
2...Spring, A crow (Concave 2nd Figure 3 (a) Leap (b) Figure 4 $6 Figure
Claims (1)
び電磁石の間に軸方向に移動可能に取付けた可動板と、
電動機等の回転軸に軸方向に移動可能に取付けると共に
、可動板及び固定板の間に配置し、かつ両面にブレーキ
ライニングを有する摩擦円板と、前記可動板を摩擦円板
９に付勢させるばねとを備えた電磁ブレーキにおいて、
前記可動板と電磁石とのうち、何れか一方にはその他方
と当接し得る面にエアギャップ用の凹部を形成し、かつ
該凹部は当接面において対応する位置と非対称形状をな
していることを特徴とする電磁ブレーキ。an electromagnet, a fixed plate fixed to the electromagnet, and a movable plate mounted so as to be movable in the axial direction between the fixed plate and the electromagnet;
A friction disk that is movably attached to a rotating shaft of an electric motor or the like in the axial direction, is arranged between a movable plate and a fixed plate, and has brake linings on both sides, and a spring that biases the movable plate against the friction disk 9. In an electromagnetic brake equipped with
Either one of the movable plate and the electromagnet is formed with a recess for an air gap on a surface that can come into contact with the other, and the recess has an asymmetrical shape with respect to the corresponding position on the contact surface. An electromagnetic brake featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20811584A JPS6188032A (en) | 1984-10-05 | 1984-10-05 | electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20811584A JPS6188032A (en) | 1984-10-05 | 1984-10-05 | electromagnetic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6188032A true JPS6188032A (en) | 1986-05-06 |
Family
ID=16550879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20811584A Pending JPS6188032A (en) | 1984-10-05 | 1984-10-05 | electromagnetic brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6188032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024013857A (en) * | 2022-07-21 | 2024-02-01 | シンフォニアテクノロジー株式会社 | electromagnetic brake device |
-
1984
- 1984-10-05 JP JP20811584A patent/JPS6188032A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024013857A (en) * | 2022-07-21 | 2024-02-01 | シンフォニアテクノロジー株式会社 | electromagnetic brake device |
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