JP2669748B2 - Electromagnetic brake - Google Patents

Electromagnetic brake

Info

Publication number
JP2669748B2
JP2669748B2 JP5361692A JP5361692A JP2669748B2 JP 2669748 B2 JP2669748 B2 JP 2669748B2 JP 5361692 A JP5361692 A JP 5361692A JP 5361692 A JP5361692 A JP 5361692A JP 2669748 B2 JP2669748 B2 JP 2669748B2
Authority
JP
Japan
Prior art keywords
bobbin
recess
brake
brake core
winding
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
Application number
JP5361692A
Other languages
Japanese (ja)
Other versions
JPH05256330A (en
Inventor
裕之 内田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FANUC Corp
Original Assignee
FANUC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FANUC Corp filed Critical FANUC Corp
Priority to JP5361692A priority Critical patent/JP2669748B2/en
Publication of JPH05256330A publication Critical patent/JPH05256330A/en
Application granted granted Critical
Publication of JP2669748B2 publication Critical patent/JP2669748B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Braking Arrangements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は電磁ブレーキに関し、特
に、電磁力によって軸線方向へ駆動される摩擦板を備え
た摩擦板式電磁ブレーキの、励磁巻線を巻設したボビン
とこのボビンを収容するブレーキコアとの相互固定構造
の改良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic brake, and more particularly, to a bobbin on which an exciting winding is wound and a bobbin of the friction plate type electromagnetic brake having a friction plate driven in an axial direction by an electromagnetic force. The present invention relates to improvement of a mutual fixing structure with a brake core.

【0002】[0002]

【従来の技術】摩擦板式電磁ブレーキは、例えば工作機
械の重力軸に使用される電動機の出力軸等、停止時に静
荷重が加わる回転体を静止保持するために、多く使用さ
れている。この種の摩擦板式電磁ブレーキは、摩擦板を
駆動する電磁力を生成するための励磁巻線と、磁性体か
らなり励磁巻線を巻設するブレーキコアと、ブレーキコ
アの端面に所定間隙を有して固定される端板と、この間
隙に軸線方向へ移動可能に挿設される摩擦板及び摩擦板
駆動用アーマチュアとを備える。摩擦板は、例えばギヤ
歯等の係合構造によって出力軸等の回転体に連結され、
回転体と一体に回転可能にかつ軸線方向へ移動可能に、
端板とアーマチュアとの間に配置される。アーマチュア
は磁性体からなる板部材であり、ブレーキコアに対向配
置され、電磁力によって軸線方向へ移動して摩擦板と端
板との相互接触を保持又は解放する。
2. Description of the Related Art A friction plate type electromagnetic brake is often used to hold a rotating body to which a static load is applied when stopped, such as an output shaft of an electric motor used for a gravity axis of a machine tool. This type of friction plate type electromagnetic brake has an excitation winding for generating an electromagnetic force that drives the friction plate, a brake core around which the excitation winding is made of a magnetic material, and a predetermined gap on the end surface of the brake core. And an end plate that is fixed in place, a friction plate and an armature for driving the friction plate that are movably inserted in the gap in the axial direction. The friction plate is connected to a rotating body such as an output shaft by an engaging structure such as gear teeth,
It can rotate together with the rotating body and can move in the axial direction.
It is arranged between the end plate and the armature. The armature is a plate member made of a magnetic material, and is arranged so as to face the brake core, and moves in the axial direction by an electromagnetic force to hold or release mutual contact between the friction plate and the end plate.

【0003】励磁巻線は、ブレーキコアの巻線設置用の
凹部に直接に設置されるか、又はボビンに巻設した後に
ボビンごと凹部へ収容される。直接に設置する場合は、
励磁巻線を予め外部の巻枠に巻いて巻線束を形成し、こ
の巻線束を巻枠から取り外した後にブレーキコアの凹部
に設置する必要があるが、ボビンを使用すればこれらの
巻設工程が簡略化される。ボビンは一般にプラスチック
からなり、励磁巻線を巻設した後に接着剤によってブレ
ーキコアの凹部に固定される。
The excitation winding is installed directly in the winding installation recess of the brake core, or is wound around the bobbin and then housed in the recess together with the bobbin. When installing directly,
It is necessary to wind the exciting winding on an external winding frame in advance to form a winding bundle, and after removing this winding bundle from the winding frame, it is necessary to install the winding bundle in the concave portion of the brake core. Is simplified. The bobbin is generally made of plastic, and is fixed to the recess of the brake core by an adhesive after winding the exciting winding.

【0004】[0004]

【発明が解決しようとする課題】ブレーキコアへの励磁
巻線の巻設にボビンを使用する場合には、励磁時にアー
マチュアへ及ぼす磁気吸引力によって、逆にボビンがブ
レーキコアの凹部から脱落しないように、ボビンを凹部
へ確実に固定する必要がある。そこで上記のように、一
般に接着剤を使用してボビンを凹部内へ強固に固定す
る。他方、ボビンに巻設された励磁巻線には、巻線束内
の隙間を充填して巻線の保持及び相互固着を強化するた
めに、一般に含浸材による含浸工程が施される。したが
って、上記のボビン型巻設構造では、励磁巻線の含浸工
程とボビンの接着工程とが必要となり、工数が増加する
とともに、硬化に長時間を要するために多大な作業時間
を消費するという課題があった。
When a bobbin is used to wind the excitation winding around the brake core, the magnetic attraction force exerted on the armature during excitation prevents the bobbin from falling out of the recess of the brake core. First, it is necessary to securely fix the bobbin to the recess. Therefore, as described above, generally, an adhesive is used to firmly fix the bobbin in the recess. On the other hand, the excitation winding wound around the bobbin is generally subjected to an impregnation step with an impregnating material in order to fill the gaps in the winding bundle to strengthen the holding and mutual fixing of the winding. Therefore, the above-described bobbin-type winding structure requires a step of impregnating the excitation winding and a step of bonding the bobbin, which increases man-hours and consumes a large amount of work time because a long time is required for curing. was there.

【0005】本発明は、このような課題を解決するため
に鋭意、工夫改善を施したものであり、その目的は、ボ
ビン型巻設構造を有した電磁ブレーキにおいて、ボビン
をブレーキコアへ確実に固定でき、かつ製造工程及び製
造に関する作業時間の削減が可能なボビン固定構造を備
えた電磁ブレーキを提供することにある。
The present invention has been earnestly devised and improved to solve the above problems, and an object thereof is to reliably secure the bobbin to the brake core in an electromagnetic brake having a bobbin type winding structure. An object of the present invention is to provide an electromagnetic brake having a bobbin fixing structure that can be fixed and that can reduce a manufacturing process and a working time related to manufacturing.

【0006】[0006]

【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、励磁巻線を巻設する巻設部を備えたボ
ビンと、ボビンを収容する収容凹部を備えたブレーキコ
アと、励磁巻線から及ぼされる電磁力によって駆動され
る摩擦板と、ボビンをブレーキコアの収容凹部内で固定
する固定手段とを具備した電磁ブレーキにおいて、上記
ボビンは、上記巻設部を形成する円筒状中心壁及び一対
の環板状側壁を備え、上記ブレーキコアの上記収容凹部
への収容時に、それらの側壁の一方を収容凹部の底壁へ
対向配置するとともに他方を収容凹部の開口に近接配置
し、かつ、その他方の側壁に、収容凹部の開口を部分的
に開放可能な切欠き部を備え、上記固定手段は、上記ボ
ビンと上記ブレーキコアの上記収容凹部との少なくとも
一方に形成されて両者を相互に係止する係止部を具備
し、上記ボビンを上記ブレーキコアの上記収容凹部へ収
容、係止した後に、ボビンの上記他方の側壁に形成され
た上記切欠き部から収容凹部内へ含浸材を注入して、上
記励磁巻線の固着を保持しかつボビンの固定を補強した
ことを特徴とする電磁ブレーキを提供する。
In order to achieve the above object, the present invention provides a bobbin having a winding portion around which an excitation winding is wound, and a brake core having a recess for accommodating the bobbin. An electromagnetic brake comprising: a friction plate driven by an electromagnetic force applied from an exciting winding; and a fixing means for fixing a bobbin in a housing recess of a brake core, wherein the bobbin is a cylinder forming the winding portion. -Shaped center wall and a pair of annular plate-shaped side walls, and when the brake core is housed in the housing recess, one of the side walls is arranged to face the bottom wall of the housing recess and the other is arranged close to the opening of the housing recess. In addition, the other side wall is provided with a notch capable of partially opening the opening of the housing recess, and the fixing means is formed in at least one of the bobbin and the housing recess of the brake core. After the bobbin is housed in the housing recess of the brake core and locked, the notch formed in the other side wall of the bobbin is inserted into the housing recess. An electromagnetic brake is provided which is characterized in that an impregnating material is injected thereinto to hold the excitation winding fixed and to reinforce the bobbin fixing.

【0007】[0007]

【作用】ブレーキコアの収容凹部の開口に近接配置され
るボビン側壁に形成された切欠き部は、ボビンを収容凹
部へ収容した後に巻線固着用の含浸材を励磁巻線の巻線
束内へ注入することを可能にする。この含浸材は、巻線
束内、励磁巻線とボビンとの隙間、及びボビンとブレー
キコアの収容凹部との隙間に浸透して、これらを相互に
固着する。さらに、ボビンとブレーキコアの収容凹部と
の少なくとも一方に形成された係止部が、両者を機械的
に係止保持する。
The notch formed in the side wall of the bobbin disposed in the vicinity of the opening of the recess of the brake core accommodates the bobbin in the recess, and then the impregnating material for fixing the winding into the winding bundle of the excitation winding. Allows you to inject. The impregnating material penetrates into the winding bundle, the gap between the exciting winding and the bobbin, and the gap between the bobbin and the recess for accommodating the brake core to fix them to each other. Further, a locking portion formed on at least one of the bobbin and the housing recess of the brake core mechanically locks and holds the both.

【0008】[0008]

【実施例】以下、添付図面を参照して、本発明をその実
施例に基づきさらに詳細に説明する。なお、各図面にお
いて、同一の構成要素には同一の参照番号を付す。図1
を参照すれば、本発明の第1実施例による電磁ブレーキ
は、励磁巻線10を巻設した円環状のボビン12と、ボ
ビン12を収容する凹部14を備えたブレーキコア16
と、ブレーキコア16の端面16aに所定間隙を有して
固定される端板18と、この間隙に軸線方向(図の上下
方向)へ移動可能に挿設される摩擦板20及び摩擦板駆
動用のアーマチュア22とを備える。ボビン12は可撓
性のプラスチック材料からなり、筒壁部12aと一対の
側壁部12b,12cとによって、励磁巻線10の巻設
部12cを形成する。ブレーキコア16は鉄等の磁性材
料からなり、内筒部16b、外筒部16c、及び端面1
6aの対向側の底壁部16dによって、円環状の凹部1
4を形成する。ブレーキコア16の内筒部16bの外径
とボビン12の筒壁部12aの内径、及びブレーキコア
16の外筒部16cの内径とボビン12の側壁部12
b,12cの外径とは、それぞれ実質的に等しく形成さ
れる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the accompanying drawings. In addition, in each drawing, the same reference numeral is given to the same component. FIG.
Referring to FIG. 1, the electromagnetic brake according to the first embodiment of the present invention includes a brake core 16 having an annular bobbin 12 around which an excitation winding 10 is wound, and a recess 14 for accommodating the bobbin 12.
An end plate 18 fixed to the end surface 16a of the brake core 16 with a predetermined gap, a friction plate 20 movably inserted in the gap in the axial direction (vertical direction in the drawing), and a friction plate driving member. Armature 22 of. The bobbin 12 is made of a flexible plastic material, and the winding portion 12c of the excitation winding 10 is formed by the cylindrical wall portion 12a and the pair of side wall portions 12b and 12c. The brake core 16 is made of a magnetic material such as iron, and has an inner cylindrical portion 16b, an outer cylindrical portion 16c, and an end surface 1b.
The annular recess 1 is formed by the bottom wall 16d on the opposite side of 6a.
4 is formed. The outer diameter of the inner tubular portion 16b of the brake core 16 and the inner diameter of the tubular wall portion 12a of the bobbin 12, and the inner diameter of the outer tubular portion 16c of the brake core 16 and the side wall portion 12 of the bobbin 12.
The outer diameters of b and 12c are substantially equal to each other.

【0009】ブレーキコア16、端板18、摩擦板2
0、及びアーマチュア22は、いずれも環状部材であ
り、各々の内径部にシャフト24が挿入される。端板1
8は、ブレーキコア16の端面16aとの間に複数(図
の例では3個)のスペーサ26を介設し、端板18及び
スペーサ26を貫通する複数(同じく3個)のねじ28
が端面16aに設けたねじ穴28a(図2)に螺合する
ことによりブレーキコア16へ固定される。摩擦板20
は、複数のギヤ歯(図示せず)によってシャフト24へ
連結され、軸線方向へ摺動可能かつシャフト24と一体
に回転可能となっている。アーマチュア22は磁性材料
からなり、スペーサ26を挿通する複数の穴22aを有
してブレーキコア16の端面16aに対向配置され、励
磁巻線10が生成する電磁力によりスペーサ26に沿っ
て軸線方向へ摺動する。アーマチュア22とブレーキコ
ア16の端面16aとの間には、複数のコイルばね30
が設置される。コイルばね30は、端面16aに凹設さ
れた溝穴31(図2)に圧縮状態で収容され、アーマチ
ュア22を常に端板18方向へ付勢する。通常時はこの
付勢により摩擦板20は端板18へ強圧接触し、それに
よりシャフト24が静止保持される。このとき、アーマ
チュア22とブレーキコア16の端面16aとの間に微
少隙間Sが形成される。励磁巻線10に電流が流れる
と、アーマチュア22はコイルばね30の付勢に抗して
電磁吸引力によりブレーキコア16の端面16aに吸引
され、摩擦板20と端板18との接触が解除され、それ
によりシャフト24が自由に回転する。
Brake core 16, end plate 18, friction plate 2
Each of the armature 22 and the armature 22 is an annular member, and the shaft 24 is inserted into each of the inner diameter portions. End plate 1
A plurality of (three in the example in the figure) spacers 26 are provided between the end surface 16a of the brake core 16 and a plurality of (similarly three) screws 28 penetrating the end plate 18 and the spacer 26.
Is fixed to the brake core 16 by being screwed into a screw hole 28a (FIG. 2) provided in the end face 16a. Friction plate 20
Is connected to the shaft 24 by a plurality of gear teeth (not shown), is slidable in the axial direction, and rotatable integrally with the shaft 24. The armature 22 is made of a magnetic material, has a plurality of holes 22a through which the spacers 26 are inserted, and is arranged to face the end surface 16a of the brake core 16, and is axially moved along the spacers 26 by the electromagnetic force generated by the exciting winding 10. Slide. A plurality of coil springs 30 are provided between the armature 22 and the end surface 16 a of the brake core 16.
Is installed. The coil spring 30 is accommodated in a compressed state in a slot 31 (FIG. 2) provided in the end surface 16a so as to constantly urge the armature 22 toward the end plate 18. Normally, the urging force causes the friction plate 20 to come into strong contact with the end plate 18, thereby holding the shaft 24 stationary. At this time, a minute gap S is formed between the armature 22 and the end surface 16a of the brake core 16. When a current flows through the excitation winding 10, the armature 22 is attracted to the end surface 16a of the brake core 16 by the electromagnetic attraction force against the bias of the coil spring 30, and the contact between the friction plate 20 and the end plate 18 is released. , Which causes the shaft 24 to rotate freely.

【0010】図1の電磁ブレーキは、ブレーキコア16
の内筒部16bの端面16a側の先端に、半径方向外方
へ突出する係止部32を備える(図3参照)。係止部3
2はボビン12をブレーキコア16の凹部14内へ固定
する固定手段を構成し、内筒部16bの先端の全周に亙
って連続して形成することもきるが、所定間隔で複数個
に分割形成してもよい。係止部32は、ブレーキコア1
6の端面16a側にテーパ部32aを有する。また、係
止部32を除く内筒部16bの内壁部分の軸線方向長さ
は、ボビン12の筒壁部12aの外壁部分の軸線方向長
さに実質的に等しくなっている。したがって、ブレーキ
コア16の凹部14へ、励磁巻線10を巻設したボビン
12を挿入すると、ボビン12の筒壁部12aと一方
(図で下方)の側壁部12bとを連結する角部が、係止
部32のテーパ部32aを半径方向内方へ押圧し、その
反力によりボビン12がわずかに変形しつつその筒壁部
12aが係止部32上を摺動する。さらに、ボビン12
の一方の側壁部12bがブレーキコア16の底壁部16
dに当接し、ブレーキコア16の凹部14内へボビン1
2が完全に収容されると、ボビン12の筒壁部12aと
他方(図で上方)の側壁部12cとを連結する角部が係
止部32によって係止され、凹部14内でのボビン12
の軸線方向変位が防止される。
The electromagnetic brake of FIG. 1 has a brake core 16
The inner cylindrical portion 16b has a locking portion 32 protruding outward in the radial direction at the end on the end face 16a side (see FIG. 3). Locking part 3
The reference numeral 2 constitutes a fixing means for fixing the bobbin 12 in the recess 14 of the brake core 16, and the bobbin 12 can be formed continuously over the entire circumference of the tip of the inner cylindrical portion 16b. You may divide and form. The locking portion 32 is the brake core 1
6 has a tapered portion 32a on the side of the end surface 16a. In addition, the axial length of the inner wall portion of the inner tubular portion 16b excluding the locking portion 32 is substantially equal to the axial length of the outer wall portion of the tubular wall portion 12a of the bobbin 12. Therefore, when the bobbin 12 around which the exciting winding 10 is wound is inserted into the concave portion 14 of the brake core 16, the corner connecting the cylindrical wall portion 12 a of the bobbin 12 and one (the lower side in the drawing) side wall portion 12 b becomes The taper portion 32a of the locking portion 32 is pressed inward in the radial direction, and the cylindrical wall portion 12a slides on the locking portion 32 while the bobbin 12 is slightly deformed by the reaction force. In addition, bobbin 12
One side wall portion 12 b is the bottom wall portion 16 of the brake core 16.
a) to contact the bobbin 1 into the recess 14 of the brake core 16.
When 2 is completely accommodated, the corner portion connecting the cylindrical wall portion 12a of the bobbin 12 and the other side wall portion 12c (upper side in the figure) is locked by the locking portion 32, and the bobbin 12 in the recess 14 is locked.
Axial displacement is prevented.

【0011】さらに図1の電磁ブレーキは、ボビン12
の上記他方の側壁部12cに、それを軸線方向へ貫通す
る複数の切欠き部34を備える(図2参照)。ボビン1
2の他方の側壁部12cは、図2に示したようにブレー
キコア16の凹部14の開口を実質的に閉鎖するが、各
切欠き部34によってこの開口が部分的に開放されるこ
ととなる。したがって、ブレーキコア16の凹部14へ
励磁巻線10を巻設したボビン12を収容し上記のよう
に係止部32によって係止した後に、図2に示すように
凹部14の開口へ含浸材36を注入すると、含浸材36
は各切欠き部34を通って、励磁巻線10の巻線束内、
励磁巻線10とボビン12との隙間、及びボビン12と
ブレーキコア16の凹部14との隙間に浸透する。この
含浸材36を、図1(b)に示すように凹部14内に完
全に充填した後、図示しない炉内で加熱硬化させること
により、巻線束の相互固着が保持され、かつ凹部14内
でのボビン12の固定が補助される。
Further, the electromagnetic brake of FIG.
The other side wall portion 12c is provided with a plurality of notches 34 penetrating it in the axial direction (see FIG. 2). Bobbin 1
The other side wall portion 12c of 2 substantially closes the opening of the recess 14 of the brake core 16 as shown in FIG. 2, but each notch 34 partially opens this opening. . Therefore, after the bobbin 12 in which the excitation winding 10 is wound is housed in the recess 14 of the brake core 16 and locked by the locking portion 32 as described above, the impregnating material 36 is inserted into the opening of the recess 14 as shown in FIG. Is injected, impregnating material 36
Passes through each of the notches 34, and in the winding bundle of the excitation winding 10,
It penetrates into the gap between the exciting winding 10 and the bobbin 12 and the gap between the bobbin 12 and the concave portion 14 of the brake core 16. After the impregnating material 36 is completely filled in the recess 14 as shown in FIG. 1 (b), it is heated and hardened in a furnace (not shown) to maintain the mutual fixation of the winding bundle, The bobbin 12 is fixed.

【0012】図4は、本発明の第2実施例による電磁ブ
レーキの、ブレーキコア16とボビン38との組体を示
す。この実施例では、ブレーキコア16の端面16a側
に配置されるボビン38の他方の側壁部38cは、ブレ
ーキコア16の外筒部16cの内径よりも小さな外径を
有し、この径寸法差によりボビン38の他方の側壁部3
8cを包囲する環状の切欠き部40が形成される。材質
及びその他の構造は図1の実施例と同一であり、説明は
省略する。したがって、ブレーキコア16の凹部14へ
励磁巻線を巻設したボビン38を収容した後に、凹部1
4の開口へ含浸材36を注入すると、含浸材36は環状
の切欠き部40を通って凹部14内へ浸透し、加熱硬化
によって図1の実施例と同様に巻線束の相互固着を保持
するとともに凹部14内でのボビン12の固定を補助す
る。
FIG. 4 shows an assembly of a brake core 16 and a bobbin 38 of an electromagnetic brake according to a second embodiment of the present invention. In this embodiment, the other side wall portion 38c of the bobbin 38 disposed on the end face 16a side of the brake core 16 has an outer diameter smaller than the inner diameter of the outer cylindrical portion 16c of the brake core 16, and the difference in diameter is caused by this difference in diameter. The other side wall portion 3 of the bobbin 38
An annular cutout 40 is formed surrounding 8c. The material and other structures are the same as those in the embodiment of FIG. 1, and the description thereof will be omitted. Therefore, after accommodating the bobbin 38 having the exciting winding wound in the recess 14 of the brake core 16,
When the impregnating material 36 is injected into the opening 4, the impregnating material 36 penetrates into the concave portion 14 through the annular cutout portion 40, and maintains the mutual fixing of the winding bundles by heat curing as in the embodiment of FIG. 1. At the same time, it assists in fixing the bobbin 12 in the recess 14.

【0013】図5は、本発明の第3実施例による電磁ブ
レーキの、ボビン42とブレーキコア44との組体を示
す。この実施例では、ブレーキコア44の端面44a側
に配置されるボビン42の他方の側壁部42cは、ブレ
ーキコア44の外筒部44cの内径よりも小さな外径を
有する部分42dと、周方向へ所定間隔に配置されてこ
の部分42dから半径方向外方へ突出する複数の係止爪
部46とを備える。他方、ブレーキコア44の外筒部4
4cの内壁部分には、ボビン42の複数の係止爪部46
に対応して複数の係止溝部48が刻設される。また、ボ
ビン42の他方の側壁部42cの部分42dとブレーキ
コア44の外筒部44cとの上記の径寸法差により、ボ
ビン42の他方の側壁部42cを包囲する複数の切欠き
部50が形成される。したがってこの実施例では、係止
爪部46及び係止溝部48が、ボビン42をブレーキコ
ア44の凹部52内へ固定する固定手段を構成する。
FIG. 5 shows an assembly of a bobbin 42 and a brake core 44 of an electromagnetic brake according to a third embodiment of the present invention. In this embodiment, the other side wall portion 42c of the bobbin 42 disposed on the end face 44a side of the brake core 44 has a portion 42d having an outer diameter smaller than the inner diameter of the outer cylinder portion 44c of the brake core 44 and a circumferential direction 42d. A plurality of locking claws 46 are provided at predetermined intervals and project radially outward from the portion 42d. On the other hand, the outer cylinder portion 4 of the brake core 44
A plurality of locking claw portions 46 of the bobbin 42 are provided on the inner wall portion 4c.
Corresponding to the above, a plurality of locking groove portions 48 are engraved. Further, due to the above-mentioned difference in diameter between the portion 42d of the other side wall portion 42c of the bobbin 42 and the outer cylinder portion 44c of the brake core 44, a plurality of cutout portions 50 surrounding the other side wall portion 42c of the bobbin 42 are formed. To be done. Therefore, in this embodiment, the locking claw portion 46 and the locking groove portion 48 form a fixing means for fixing the bobbin 42 into the recess 52 of the brake core 44.

【0014】ブレーキコア44の凹部52へ、励磁巻線
10を巻設したボビン42を挿入すると、ボビン42の
他方の側壁部42cの複数の爪部46がブレーキコア4
4の外筒部44cの内壁部分によって半径方向内方へ押
圧され、ボビン42がわずかに変形しつつ凹部52へ収
容される。ボビン42の一方の側壁部42bがブレーキ
コア44の底壁部44dに当接すると、ボビン42の各
係止爪部46が対応する係止溝部48に嵌合し、これに
よりボビン42の軸線方向変位が防止される。その後、
図5(b)に示したように、ブレーキコア44の凹部5
2の開口へ含浸材54を注入すると、含浸材54は複数
の切欠き部50を通って凹部52内へ浸透し、加熱硬化
によって前述の各実施例と同様に巻線束の相互固着を保
持するとともに凹部52内でのボビン42の固定を補助
する。
When the bobbin 42 around which the excitation winding 10 is wound is inserted into the recess 52 of the brake core 44, the plurality of claw portions 46 of the other side wall portion 42c of the bobbin 42 are inserted into the brake core 4.
4 is pressed inward in the radial direction by the inner wall portion of the outer cylindrical portion 44c of 4, and the bobbin 42 is accommodated in the recess 52 while slightly deforming. When one of the side wall portions 42b of the bobbin 42 comes into contact with the bottom wall portion 44d of the brake core 44, each locking claw portion 46 of the bobbin 42 fits into a corresponding locking groove portion 48, thereby the axial direction of the bobbin 42. Displacement is prevented. afterwards,
As shown in FIG. 5B, the recess 5 of the brake core 44 is
When the impregnating material 54 is injected into the openings 2, the impregnating material 54 penetrates into the recesses 52 through the plurality of notches 50, and maintains the mutual fixation of the winding bundle by heat curing as in the above-described embodiments. At the same time, it assists in fixing the bobbin 42 in the recess 52.

【0015】図6は、本発明の第4実施例による電磁ブ
レーキの、ボビン56とブレーキコア58との組体を示
す。この実施例では、ボビン56の筒壁部56aとブレ
ーキコア58の内筒部58bとが、相互に当接可能な略
楕円形断面を有する。筒壁部56aと内筒部58bとが
整合した状態でブレーキコア58の凹部60内へボビン
56を挿入し、その後、筒壁部56aと内筒部58bと
の接触を保持しつつボビン56を図示矢印の如く回転す
ると、ボビン56は、内筒部58bの略楕円形状によっ
て変形し、それ自体の弾性力により凹部60内へ固定さ
れる。したがってこの実施例では、図1の実施例におけ
る係止部32が省略されるが、その他の構造は図2の第
2実施例と同一であり、同様に含浸材を注入することに
よって、巻線束の相互固着が保持されかつ凹部60内で
のボビン56の固定が補助される。
FIG. 6 shows an assembly of a bobbin 56 and a brake core 58 of an electromagnetic brake according to a fourth embodiment of the present invention. In this embodiment, the cylindrical wall portion 56a of the bobbin 56 and the inner cylindrical portion 58b of the brake core 58 have a substantially elliptical cross section that can abut each other. The bobbin 56 is inserted into the recess 60 of the brake core 58 in a state where the tubular wall portion 56a and the inner tubular portion 58b are aligned with each other, and then the bobbin 56 is removed while maintaining the contact between the tubular wall portion 56a and the inner tubular portion 58b. When the bobbin 56 is rotated as shown by the arrow in the drawing, the bobbin 56 is deformed by the substantially elliptical shape of the inner cylinder portion 58b, and is fixed in the recess 60 by its own elastic force. Therefore, in this embodiment, the locking portion 32 in the embodiment of FIG. 1 is omitted, but the other structure is the same as that of the second embodiment of FIG. 2, and by similarly injecting the impregnating material, the winding bundle is Are secured to each other and help secure the bobbin 56 in the recess 60.

【0016】[0016]

【発明の効果】以上の説明から明らかなように、本発明
は、電磁ブレーキのボビンとブレーキコアの収容凹部と
の少なくとも一方に係止部を形成し、この係止部が両者
を機械的に係止保持するとともに、ブレーキコアの収容
凹部の開口に近接配置されるボビン側壁に切欠き部を形
成し、ボビンを収容凹部へ収容した後に切欠き部から収
容凹部内へ含浸材を注入して、励磁巻線の固着を保持し
かつボビンの固定を補助する構成としたから、ボビンを
ブレーキコアへ確実に固定して機械振動や衝撃に対する
強度を維持することができるのみならず、従来のボビン
とブレーキコアとの接着工程を省略して製造工程数及び
製造に要する作業時間を削減し、信頼性の高い電磁ブレ
ーキを優れた生産性の下で製造することが可能となる。
As is apparent from the above description, according to the present invention, a locking portion is formed on at least one of the bobbin of the electromagnetic brake and the recessed portion of the brake core, and the locking portion mechanically connects both. A notch is formed in the side wall of the bobbin arranged close to the opening of the accommodation recess of the brake core while retaining and holding, and after impregnating the bobbin in the accommodation recess, the impregnating material is injected into the accommodation recess from the notch. Since the structure that holds the excitation winding fixed and assists the fixing of the bobbin is secured, the bobbin can be securely fixed to the brake core to maintain the strength against mechanical vibration and shock. It is possible to reduce the number of manufacturing steps and the working time required for manufacturing by omitting the step of adhering the brake core to the brake core, and to manufacture a highly reliable electromagnetic brake with excellent productivity.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1実施例による電磁ブレーキの図
で、(a)平面図、(b)線I−Iに沿った縦断面図、
である。
1A and 1B are diagrams of an electromagnetic brake according to a first embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a vertical sectional view taken along line I-I;
It is.

【図2】図1の電磁ブレーキのボビン/ブレーキコア組
体の平面図で、含浸材の含浸工程を説明する図である。
2 is a plan view of the bobbin / brake core assembly of the electromagnetic brake of FIG. 1, illustrating the impregnation step of the impregnating material.

【図3】図1の電磁ブレーキのボビン/ブレーキコア組
体の分解図で、図2の線 III−III に沿った縦断面で示
す。
3 is an exploded view of the bobbin / brake core assembly of the electromagnetic brake of FIG. 1, shown in a vertical cross-section along line III-III of FIG.

【図4】本発明の第2実施例による電磁ブレーキのボビ
ン/ブレーキコア組体の平面図で、含浸材の含浸工程を
説明する図である。
FIG. 4 is a plan view of a bobbin / brake core assembly of an electromagnetic brake according to a second embodiment of the present invention, which is a diagram illustrating an impregnating step of impregnating material.

【図5】本発明の第3実施例による電磁ブレーキのボビ
ン/ブレーキコア組体の図で、(a)平面図、(b)線
V−Vに沿った縦断面図で含浸材の注入後の状態を示す
図、である。
FIG. 5 is a view of a bobbin / brake core assembly of an electromagnetic brake according to a third embodiment of the present invention, in which (a) is a plan view and (b) is a vertical cross-sectional view taken along line VV after impregnation material is injected. It is a figure which shows the state of.

【図6】本発明の第4実施例による電磁ブレーキのボビ
ン/ブレーキコア組体の平面図である。
FIG. 6 is a plan view of a bobbin / brake core assembly of an electromagnetic brake according to a fourth exemplary embodiment of the present invention.

【符号の説明】[Explanation of symbols]

10…励磁巻線 12,38,42,56…ボビン 14,52,60…凹部 16,44,58…ブレーキコア 18…端板 20…摩擦板 22…アーマチュア 24…シャフト 26…スペーサ 28…ねじ 30…コイルばね 32…係止部 34,40,50…切欠き部 36,54…含浸材 46…係止爪部 48…係止溝部 10 ... Excitation winding 12, 38, 42, 56 ... Bobbin 14, 52, 60 ... Recessed portion 16, 44, 58 ... Brake core 18 ... End plate 20 ... Friction plate 22 ... Armature 24 ... Shaft 26 ... Spacer 28 ... Screw 30 ... Coil spring 32 ... Locking portions 34,40,50 ... Notch portions 36,54 ... Impregnated material 46 ... Locking claw portions 48 ... Locking groove portions

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 励磁巻線を巻設する巻設部を備えたボビ
ンと、該ボビンを収容する収容凹部を備えたブレーキコ
アと、前記励磁巻線から及ぼされる電磁力によって駆動
される摩擦板と、前記ボビンを前記ブレーキコアの収容
凹部内で固定する固定手段とを具備した電磁ブレーキに
おいて、 前記ボビンは、前記巻設部を形成する円筒状中心壁及び
一対の環板状側壁を備え、前記ブレーキコアの前記収容
凹部への収容時に、該側壁の一方を該収容凹部の底壁へ
対向配置するとともに他方を該収容凹部の開口に近接配
置し、かつ、該他方の側壁に、該収容凹部の開口を部分
的に開放可能な切欠き部を備え、 前記固定手段は、前記ボビンと前記ブレーキコアの前記
収容凹部との少なくとも一方に形成されて両者を相互に
係止する係止部を具備し、前記ボビンを前記ブレーキコ
アの前記収容凹部へ収容、係止した後に、該ボビンの前
記他方の側壁に形成された前記切欠き部から該収容凹部
内へ含浸材を注入して、前記励磁巻線の固着を保持しか
つ該ボビンの固定を補強したことを特徴とする電磁ブレ
ーキ。
1. A bobbin having a winding portion around which an excitation winding is wound, a brake core having an accommodating recess for accommodating the bobbin, and a friction plate driven by an electromagnetic force exerted from the excitation winding. And an electromagnetic brake comprising a fixing means for fixing the bobbin in the housing recess of the brake core, wherein the bobbin includes a cylindrical center wall forming the winding portion and a pair of annular plate side walls, When the brake core is accommodated in the accommodating recess, one of the side walls is disposed to face the bottom wall of the accommodating recess and the other is disposed close to the opening of the accommodating recess, and the other side wall is accommodated in the accommodating recess. The fixing means includes a notch capable of partially opening the opening of the recess, and the fixing means includes a locking portion formed on at least one of the bobbin and the housing recess of the brake core to lock the two mutually. Equipped with the above After accommodating and locking the bin in the accommodation recess of the brake core, impregnating material is injected into the accommodation recess from the notch formed in the other side wall of the bobbin, and the exciting coil is An electromagnetic brake, characterized in that it holds the sticking and reinforces the fixing of the bobbin.
JP5361692A 1992-03-12 1992-03-12 Electromagnetic brake Expired - Fee Related JP2669748B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5361692A JP2669748B2 (en) 1992-03-12 1992-03-12 Electromagnetic brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5361692A JP2669748B2 (en) 1992-03-12 1992-03-12 Electromagnetic brake

Publications (2)

Publication Number Publication Date
JPH05256330A JPH05256330A (en) 1993-10-05
JP2669748B2 true JP2669748B2 (en) 1997-10-29

Family

ID=12947842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5361692A Expired - Fee Related JP2669748B2 (en) 1992-03-12 1992-03-12 Electromagnetic brake

Country Status (1)

Country Link
JP (1) JP2669748B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101299558B1 (en) * 2013-04-08 2013-08-23 주식회사 퓨트로닉 Electronic brake for switching a wheel drive mode of a vehicle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123568B (en) * 2011-03-24 2013-07-15 Kone Corp Electromagnetic brake
JP6717711B2 (en) 2016-08-30 2020-07-01 ファナック株式会社 Electromagnetic brake
JP7022913B2 (en) * 2018-04-19 2022-02-21 パナソニックIpマネジメント株式会社 Lever input device
DE102019120042A1 (en) * 2019-07-24 2021-01-28 Konecranes Global Corp. Electromagnetic brake
DE102019120041A1 (en) * 2019-07-24 2021-01-28 Konecranes Global Corp. Electromagnetic brake
DE102019120043A1 (en) * 2019-07-24 2021-01-28 Konecranes Global Corp. Electromagnetic brake

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101299558B1 (en) * 2013-04-08 2013-08-23 주식회사 퓨트로닉 Electronic brake for switching a wheel drive mode of a vehicle

Also Published As

Publication number Publication date
JPH05256330A (en) 1993-10-05

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