JP3295264B2 - Electromagnetic coupling device - Google Patents
Electromagnetic coupling deviceInfo
- Publication number
- JP3295264B2 JP3295264B2 JP03910895A JP3910895A JP3295264B2 JP 3295264 B2 JP3295264 B2 JP 3295264B2 JP 03910895 A JP03910895 A JP 03910895A JP 3910895 A JP3910895 A JP 3910895A JP 3295264 B2 JP3295264 B2 JP 3295264B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- hollow shaft
- coupling device
- peripheral surface
- shaft end
- 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
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、事務機器などに組込
まれて低速、低負荷状態で使用されるマイクロ電磁クラ
ッチやマイクロ電磁ブレーキなどの電磁連結装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic coupling device such as a micro-electromagnetic clutch or a micro-electromagnetic brake which is incorporated in office equipment and used at low speed and low load.
【０００２】[0002]
【従来の技術】従来の電磁連結装置のうちマイクロ電磁
クラッチは、図６に上半分を断面とした側面図で示した
ように、面取り部１ａが形成された略半月状の軸端部を
有する回転軸１に装着される。電磁クラッチ２は、断面
が略Ｄ字状に形成された軸端部の孔部（以下、Ｄ孔とい
う。）３ａを有する中空軸３の長手方向略中央に円板状
のロータ４が圧入嵌合されて一体に固定されており、ま
た中空軸３のＤ孔３ａ側から嵌合されてロータ４にスラ
スト軸受５を介して内極側が当接されたフィールドコア
６と、中空軸３のＤ孔３ａとは反対側から嵌合されてロ
ータ４にボス部先端が当接されたアーマチュアハブ（歯
車）７が、中空軸３に支持されて止め輪８、９で抜け止
めされている。2. Description of the Related Art As a conventional electromagnetic coupling device, a micro-electromagnetic clutch has a substantially half-moon-shaped shaft end having a chamfered portion 1a as shown in a side view in which the upper half is sectioned in FIG. Mounted on the rotating shaft 1. In the electromagnetic clutch 2, a disk-shaped rotor 4 is press-fitted at substantially the center in the longitudinal direction of a hollow shaft 3 having a hole (hereinafter, referred to as a D-hole) 3 a at a shaft end having a substantially D-shaped cross section. A field core 6 which is fitted from the D hole 3a side of the hollow shaft 3 and whose inner pole is in contact with the rotor 4 via a thrust bearing 5; An armature hub (gear) 7 fitted from the side opposite to the hole 3a and having the tip of the boss contacting the rotor 4 is supported by the hollow shaft 3 and is prevented from falling off by retaining rings 8 and 9.
【０００３】フィールドコア６には、コイルボビン１０
とコイルカバー１１により外部と完全に絶縁された電磁
コイル１２が収納されており、図示せぬ固定部材に掛止
されて回り止めされている。またアーマチュアハブ７に
は、板ばね１３により軸線方向にのみ移動自在にアーマ
チュア１４が支持されており、アーマチュア１４とロー
タ４との間に所定の空隙が形成されている。なお符号１
５は、図示せぬ電源と接続される端子台であり、電磁コ
イル１２の巻始め端部と巻終わり端部が結線された一対
のターミナルが収納されている。The field core 6 includes a coil bobbin 10
An electromagnetic coil 12 completely insulated from the outside by the coil cover 11 is housed, and is locked by a fixing member (not shown) and is prevented from rotating. An armature 14 is supported by the armature hub 7 so as to be movable only in the axial direction by a leaf spring 13, and a predetermined gap is formed between the armature 14 and the rotor 4. The code 1
Reference numeral 5 denotes a terminal block connected to a power supply (not shown), which accommodates a pair of terminals having a winding start end and a winding end end of the electromagnetic coil 12 connected thereto.
【０００４】したがってこのような構造とした電磁クラ
ッチ２は、モータなどの駆動源側の歯車（図示せぬ）と
噛み合うアーマチュアハブ７が常時回転しているので、
電磁コイル１２に通電することにより発生する磁束によ
り、板ばね１３のばね力に抗してアーマチュア１４をロ
ータ４に磁気吸着すると、アーマチュアハブ７の回転
は、これらアーマチュア１４やロータ４と中空軸３のＤ
孔３ａを介して回転軸１に伝達される。一方、電磁コイ
ル１２への通電を断てば磁束は消滅するので、アーマチ
ュア１４が板ばね１３のばね力（復帰力）でロータ４か
ら離間されて、回転軸１への回転伝達は遮断される。Accordingly, in the electromagnetic clutch 2 having such a structure, the armature hub 7 that meshes with the gear (not shown) on the driving source side such as a motor is always rotating.
When the armature 14 is magnetically attracted to the rotor 4 against the spring force of the leaf spring 13 by the magnetic flux generated by energizing the electromagnetic coil 12, the rotation of the armature hub 7 causes the rotation of the armature 14, the rotor 4 and the hollow shaft 3. D
It is transmitted to the rotating shaft 1 via the hole 3a. On the other hand, if the power supply to the electromagnetic coil 12 is cut off, the magnetic flux disappears, so that the armature 14 is separated from the rotor 4 by the spring force (return force) of the leaf spring 13 and the rotation transmission to the rotary shaft 1 is cut off. .
【０００５】このように従来の電磁クラッチ２は、各構
成部材が中空軸３に組込まれているため、中空軸３に回
転軸１を挿入してそれらの面取り部１ａとＤ孔３ａを嵌
合することにより、簡単に回転軸１に装着される構造で
ある。しかしながら従来の電磁クラッチ２では、Ｄ孔３
ａを有する中空軸３を焼結合金材製の軸体として一体に
形成していたため、その作業が面倒で長時間を要し生産
性の面での改善が望まれていた。そこで出願人は、実願
平１−７７５７１号明細書並びに図面に提案されている
ように、中空軸３のＤ孔３ａ部分を別部材で形成するよ
うにした。[0005] As described above, in the conventional electromagnetic clutch 2, since the constituent members are incorporated in the hollow shaft 3, the rotating shaft 1 is inserted into the hollow shaft 3 and the chamfered portions 1 a and the D holes 3 a are fitted. By doing so, the structure can be easily mounted on the rotating shaft 1. However, in the conventional electromagnetic clutch 2, the D hole 3
Since the hollow shaft 3 having a is integrally formed as a shaft made of a sintered alloy material, the operation is troublesome and requires a long time, and improvement in productivity has been desired. Therefore, as proposed in Japanese Patent Application No. 1-77571 and the drawings, the applicant has formed the D hole 3a portion of the hollow shaft 3 with a separate member.
【０００６】即ち、図７に上半分のみの断面図で示した
電磁クラッチ１６のように、中空軸１７を、小径真円部
１７ａと大径真円部１７ｂとからなる段状の中心孔とし
外周面には段差部１７ｃが形成された軸体としている。
またこの中空軸１７の大径真円部１７ｂには、Ｄ孔１８
ａとフランジ部１８ｂが形成された合成樹脂材製のカラ
ー１８が嵌合されており、このカラー１８に形成された
複数の突起１８ｃを中空軸１７の大径真円部１７ｂに形
成された溝１７ｄと係合させることにより、これら中空
軸１７とカラー１８は一体に固定されている。また更に
は、断面がコ字状のロータ１９を段差部１７ｃに当接さ
れるまで中空軸１７に圧入嵌合することにより固定して
いる。なお符号２０は、フィールドコア６の内極側とロ
ータ１９との間に介在されたスラスト軸受である。That is, like an electromagnetic clutch 16 shown in a sectional view of only the upper half in FIG. 7, the hollow shaft 17 is a stepped center hole composed of a small-diameter perfect circular portion 17a and a large-diameter perfect circular portion 17b. The outer peripheral surface is a shaft having a step 17c formed thereon.
In addition, a D hole 18 is formed in the large-diameter round portion 17b of the hollow shaft 17.
a and a collar 18 made of a synthetic resin material having a flange portion 18b formed therein, and a plurality of projections 18c formed on the collar 18 are formed in a groove formed on a large-diameter round portion 17b of the hollow shaft 17. The hollow shaft 17 and the collar 18 are integrally fixed by engaging with 17d. Furthermore, the rotor 19 having a U-shaped cross section is fixed by press-fitting the hollow shaft 17 until it comes into contact with the step 17c. Reference numeral 20 denotes a thrust bearing interposed between the inner pole side of the field core 6 and the rotor 19.
【０００７】このような構造とした従来の電磁クラッチ
１６は、アーマチュアハブ７の回転がアーマチュア１４
からロータ１９を通り、中空軸１７とカラー１８を介し
て回転軸１に伝達される。In the conventional electromagnetic clutch 16 having such a structure, the rotation of the armature hub 7 is controlled by the armature 14.
Through the rotor 19, and transmitted to the rotating shaft 1 via the hollow shaft 17 and the collar 18.
【０００８】[0008]
【発明が解決しようとする課題】従来の電磁クラッチ１
６は、焼結合金材製の中空軸１７にフィールドコア６が
支持された大径真円部１７ｂを設け、この大径真円部１
７ｂの内周面に合成樹脂材製のカラー１８を圧入嵌合し
て固定した構造からなり、カラー１８の肉厚を厚くして
いる。そして、これら大径真円部１７ｂとカラー１８の
係合のはずれ並びにカラー１８の変形を防止していた。
したがって、装置の外径寸法が大きくなり軽量小形な電
磁連結装置を提供することができないという問題があっ
た。また、フィールドコア６の内周面と中空軸１７の大
径真円部１７ｂの外周面とが摩擦摺接されるため、その
摩擦熱によるカラー１８の熱膨張に起因する問題もあっ
た。この発明では、このような問題を解決して軽量小形
な電磁連結装置を提供する。SUMMARY OF THE INVENTION Conventional electromagnetic clutch 1
Numeral 6 is a hollow shaft 17 made of a sintered alloy material provided with a large-diameter perfect circular portion 17b in which the field core 6 is supported.
A collar 18 made of a synthetic resin material is press-fitted and fixed to the inner peripheral surface of 7b, and the thickness of the collar 18 is increased. In addition, the large diameter perfect circular portion 17b is prevented from being disengaged from the collar 18 and the collar 18 is prevented from being deformed.
Therefore, there has been a problem that the outer diameter of the device becomes large, and it is not possible to provide a lightweight and compact electromagnetic coupling device. Further, since the inner peripheral surface of the field core 6 and the outer peripheral surface of the large-diameter round portion 17b of the hollow shaft 17 are in frictional sliding contact with each other, there is also a problem caused by thermal expansion of the collar 18 due to the frictional heat. The present invention solves such a problem and provides a lightweight and compact electromagnetic coupling device.
【０００９】[0009]
【課題を解決するための手段】このような目的を達成す
るために、第１の発明の電磁連結装置は、フィールドコ
アの中心孔から突出した焼結合金材製の中空軸の軸端部
に、前記中空軸に挿入される回転軸の軸端部の面取り部
と係合される係合部材が設けられた電磁連結装置におい
て、前記中空軸の軸端部の内周面に形成された凹部に外
周面が圧入嵌合されて固定された環状部と、前記中空軸
に非圧入状態で挿入され前記回転軸の軸端部の面取り部
に係合された係合片とが一体に形成された金属材製の前
記係合部材を設けたことを特徴とする。In order to achieve the above object, an electromagnetic coupling device according to a first aspect of the present invention provides a shaft end portion of a hollow shaft made of a sintered alloy material protruding from a center hole of a field core.
A chamfered portion of a shaft end of a rotating shaft inserted into the hollow shaft.
Electromagnetic coupling device provided with an engagement member engaged with the electromagnetic coupling device
To the recess formed in the inner peripheral surface of the shaft end of the hollow shaft.
A fixed annular portion peripheral surface is press-fitted, and engaging pieces being inserted is engaged with the chamfered portion of the shaft end portion of the rotary shaft in a non-pressed state is formed integrally with the hollow shaft It is characterized in that the engaging member made of a metal material is provided.
【００１０】また、第２の発明の電磁連結装置は、フィ
ールドコアの中心孔から突出した焼結合金材製の中空軸
の軸端部に、前記中空軸に挿入される回転軸の軸端部の
面取り部と係合される係合部材が設けられた電磁連結装
置において、前記中空軸の軸端部の外周面に内周面が圧
入嵌合されて固定された環状部と、前記中空軸の軸端部
に形成された切欠き溝に嵌合された回り止め部と、前記
中空軸に非圧入状態で挿入され前記回転軸の軸端部の面
取り部に係合された係合片とが一体に形成された金属材
製の前記係合部材を設けたことを特徴とする。 Further , the electromagnetic coupling device of the second invention is characterized in that
Hollow shaft made of sintered alloy material protruding from the center hole of the core
Of the shaft end of the rotating shaft inserted into the hollow shaft
Electromagnetic coupling device provided with an engaging member engaged with a chamfer
The inner peripheral surface is pressed against the outer peripheral surface of the shaft end of the hollow shaft.
An annular portion fitted and fixed, and a shaft end of the hollow shaft
A detent part fitted in a notch groove formed in
The surface of the shaft end of the rotary shaft which is inserted into the hollow shaft in a non-press fit state
Metal material in which an engagement piece engaged with a take-off portion is integrally formed
The above-mentioned engagement member is provided.
【００１１】[0011]
【作用】アーマチュアをロータに磁気吸着すると、アー
マチュアハブの回転は中空軸と係合部材により一体化さ
れた回転軸に伝達される。When the armature is magnetically attracted to the rotor, the rotation of the armature hub is transmitted to the rotary shaft integrated by the hollow shaft and the engaging member.
【００１２】[0012]
【実施例】図１は第１の発明の一実施例であり、上半分
を断面とした電磁クラッチの側面図である。なお、図６
の電磁クラッチと同等な部材には同じ符号を付けること
により、重複する説明は省略する。電磁クラッチ２１
は、フィールドコア６の中心孔から突出した焼結合金材
製の中空軸２２の軸端部に凹部２２ａが形成され、この
凹部２２ａには、金属材製の係合部材２３が設けられて
いる。係合部材２３は、中空軸２２に非圧入状態に挿入
され、回転軸１の軸端部の面取り部１ａと係合された係
合片２３ａと、中空軸２２の凹部２２ａに外周面が圧入
嵌合され一体に固定された環状部２３ｂが設けられてい
る。このような構造とした電磁クラッチ２１は、中空軸
２２に回転軸１を挿入してその面取り部１ａと係合部材
２３の係合片２３ａを係合するのみで装着できる。なお
この電磁クラッチ２１は、電磁クラッチ２、１６と同じ
ように作用する。FIG. 1 shows an embodiment of the first invention , and is a side view of an electromagnetic clutch having an upper half in cross section. FIG.
The same reference numerals are given to members equivalent to those of the electromagnetic clutch described above, and duplicate description is omitted. Electromagnetic clutch 21
The hollow shaft 22 made of a sintered alloy material protruding from the center hole of the field core 6 has a concave portion 22a formed at an axial end thereof, and the concave member 22a is provided with an engaging member 23 made of a metal material. . The engaging member 23 is inserted into the hollow shaft 22 in a non-press-fit state, and the outer peripheral surface is press-fitted into the concave portion 22a of the hollow shaft 22 and the engaging piece 23a engaged with the chamfered portion 1a at the shaft end of the rotary shaft 1. An annular portion 23b fitted and integrally fixed is provided. The electromagnetic clutch 21 having such a structure can be mounted simply by inserting the rotating shaft 1 into the hollow shaft 22 and engaging the chamfered portion 1a with the engaging piece 23a of the engaging member 23. The electromagnetic clutch 21 operates in the same manner as the electromagnetic clutches 2 and 16.
【００１３】次に、第２の発明の実施例を説明する。図
２は要部のみを断面とした電磁クラッチの側面図であ
り、図３は図２の係合部材の断面図、図４は図３の右側
面図、図５は図４の上面図である。なお、図６の電磁ク
ラッチと同等な部材には同じ符号を付けることにより、
重複する説明は省略する。電磁クラッチ２４は、焼結合
金材で形成された中空軸２５の軸端部の側面に切欠き溝
２５ａが形成されている。金属材製の係合部材２６は、
中空軸２５の切欠き溝２５ａに嵌合された回り止め部２
６ａと、中空軸２５に非圧入状態に挿入され回転軸１の
軸端部の面取り部１ａと係合された略矩形状の係合片２
６ｂと、中空軸２５の軸端部の外周面に圧入嵌合されて
一体に固定された環状部２６ｃが設けられている。また
係合部材２６の環状部２６ｃの側面は、フィールドコア
６の側面に当接されている。なお符号２６ｄ（図４参
照）は、中空軸２５の内周面と接触しないように面取り
されたテーパ面である。このような構造とした電磁クラ
ッチ２４は、中空軸２５に回転軸１を挿入してその面取
り部１ａと係合部材２６の係合片２６ｂを係合するのみ
で装着できる。またこの電磁クラッチ２４は、電磁クラ
ッチ２、１６、２１と同じように作用する。Next, an embodiment of the second invention will be described. FIG. 2 is a side view of the electromagnetic clutch in which only a main part is cross-sectioned. FIG. 3 is a cross-sectional view of the engagement member of FIG. 2, FIG. 4 is a right side view of FIG. is there. The same reference numerals are given to members equivalent to those of the electromagnetic clutch of FIG.
Duplicate description will be omitted. In the electromagnetic clutch 24, a cutout groove 25a is formed on a side surface of a shaft end of a hollow shaft 25 formed of a sintered alloy material. The engagement member 26 made of a metal material
Detent part 2 fitted in notch groove 25a of hollow shaft 25
6a, a substantially rectangular engaging piece 2 inserted into the hollow shaft 25 in a non-press-fit state and engaged with the chamfered portion 1a at the shaft end of the rotary shaft 1.
6b, and an annular portion 26c which is press-fitted and fixed integrally with the outer peripheral surface of the shaft end of the hollow shaft 25 is provided. The side surface of the annular portion 26 c of the engagement member 26 is in contact with the side surface of the field core 6. Reference numeral 26d (see FIG. 4) is a tapered surface chamfered so as not to contact the inner peripheral surface of the hollow shaft 25. The electromagnetic clutch 24 having such a structure can be mounted simply by inserting the rotating shaft 1 into the hollow shaft 25 and engaging the chamfered portion 1a with the engaging piece 26b of the engaging member 26. The electromagnetic clutch 24 operates in the same manner as the electromagnetic clutches 2, 16, 21.
【００１４】以上、この発明の電磁連結装置としてマイ
クロ電磁クラッチを説明したが、例えばアーマチュアを
フィールドコアに固定されたディスクに磁気吸着するマ
イクロ電磁ブレーキにもこの発明は適用される。また、
係合部材２３、２６の中空軸２２、２５に圧入嵌合され
る環状部２３ｂの外周面、環状部２６ｃの内周面の形状
を多角形状にするなど、細部の形状の設計変更が可能で
ある。Although the micro electromagnetic clutch has been described as the electromagnetic coupling device of the present invention, the present invention is also applicable to, for example, a micro electromagnetic brake that magnetically attracts an armature to a disk fixed to a field core. Also,
It is possible to change the design of a detailed shape such as making the outer peripheral surface of the annular portion 23b, which is press-fit into the hollow shafts 22 and 25 of the engaging members 23 and 26, and the inner peripheral surface of the annular portion 26c polygonal. is there.
【００１５】[0015]
【発明の効果】以上のように、第１、第２の発明の電磁
連結装置は、フィールドコアの中心孔から突出した焼結
合金材製の中空軸の軸端部に圧入嵌合されて固定された
環状部と、前記中空軸に非圧入状態で挿入され回転軸の
軸端部の面取り部に係合された係合片とが一体に形成さ
れた金属材製の係合部材を設けたので、係合部材の係合
片の肉厚を薄くすることができる。したがって、中空軸
に段状の中心孔を形成してその大径真円部の外周面にフ
ィールドコアを支持した従来の構造が改善され、装置を
軽量小形に設計することができる。As described above, the first and second aspects of the electromagnetic
The coupling device includes an annular portion press-fitted and fixed to a shaft end of a sintered alloy material hollow shaft protruding from a center hole of the field core, and a rotary shaft inserted into the hollow shaft in a non-press-fit state. Since the metal-made engaging member is integrally formed with the engaging piece engaged with the chamfered portion of the shaft end, the thickness of the engaging piece of the engaging member can be reduced. Therefore, the conventional structure in which the stepped center hole is formed in the hollow shaft and the field core is supported on the outer peripheral surface of the large-diameter perfect circular portion is improved, and the device can be designed to be lightweight and compact.
【図１】この発明の電磁連結装置の一実施例であり、上
半分を断面としたマイクロ電磁クラッチの側面図であ
る。FIG. 1 is a side view of an embodiment of an electromagnetic coupling device according to the present invention, showing a micro electromagnetic clutch having an upper half in cross section.
【図２】この発明の他の実施例であり、要部のみを断面
としたマイクロ電磁クラッチの側面図である。FIG. 2 is a side view of a micro-electromagnetic clutch according to another embodiment of the present invention, in which only a main part is sectioned.
【図３】図２の係合部材の断面図である。FIG. 3 is a sectional view of the engagement member of FIG. 2;
【図４】図３の係合部材の右側面図である。FIG. 4 is a right side view of the engagement member of FIG. 3;
【図５】図４の係合部材の上面図である。FIG. 5 is a top view of the engagement member of FIG. 4;
【図６】従来のマイクロ電磁クラッチの上半分を断面と
した側面図である。FIG. 6 is a side view showing a cross section of an upper half of a conventional micro electromagnetic clutch.
【図７】従来のマイクロ電磁クラッチの上半分のみの断
面図である。FIG. 7 is a sectional view of only the upper half of a conventional micro electromagnetic clutch.
１…回転軸、３…中空軸、２３…係合部材、２６…係合
部材。DESCRIPTION OF SYMBOLS 1 ... Rotating shaft, 3 ... Hollow shaft, 23 ... Engaging member, 26 ... Engaging member.
Claims (2)
結合金材製の中空軸の軸端部に、前記中空軸に挿入され
る回転軸の軸端部の面取り部と係合される係合部材が設
けられた電磁連結装置において、前記中空軸の軸端部の
内周面に形成された凹部に外周面が圧入嵌合されて固定
された環状部と、前記中空軸に非圧入状態で挿入され前
記回転軸の軸端部の面取り部に係合された係合片とが一
体に形成された金属材製の前記係合部材を設けたことを
特徴とする電磁連結装置。1. A hollow shaft made of a sintered alloy material protruding from a center hole of a field core and inserted into the hollow shaft.
An engaging member is provided which is engaged with a chamfer at the shaft end of the rotating shaft.
In the electromagnetic coupling device, the shaft end of the hollow shaft is
An annular portion outer peripheral surface in a recess formed in the inner peripheral surface is fixed press-fitted, before being inserted in a non-pressed state to the hollow shaft
Serial and engaging pieces engaged with the chamfered portion of the shaft end portion of the rotary shaft electromagnetic coupling device is characterized by providing the engaging member made of a metal material formed integrally.
結合金材製の中空軸の軸端部に、前記中空軸に挿入され
る回転軸の軸端部の面取り部と係合される係合部材が設
けられた電磁連結装置において、前記中空軸の軸端部の
外周面に内周面が圧入嵌合されて固定された環状部と、
前記中空軸の軸端部に形成された切欠き溝に嵌合された
回り止め部と、前記中空軸に非圧入状態で挿入され前記
回転軸の軸端部の面取り部に係合された係合片とが一体
に形成された金属材製の前記係合部材を設けたことを特
徴とする電磁連結装置。 2. A firing protruding from a center hole of a field core.
At the shaft end of a hollow shaft made of a bonding metal material, the hollow shaft is inserted into the hollow shaft.
An engaging member is provided which is engaged with a chamfer at the shaft end of the rotating shaft.
In the electromagnetic coupling device, the shaft end of the hollow shaft is
An annular portion whose inner peripheral surface is press-fitted and fixed to the outer peripheral surface,
Fitted in a notch groove formed in the shaft end of the hollow shaft
A detent part, inserted into the hollow shaft in a non-press fit state,
The engaging piece engaged with the chamfer at the shaft end of the rotating shaft is integrated
The engaging member made of a metal material formed in
Electromagnetic coupling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03910895A JP3295264B2 (en) | 1995-02-02 | 1995-02-02 | Electromagnetic coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03910895A JP3295264B2 (en) | 1995-02-02 | 1995-02-02 | Electromagnetic coupling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08210388A JPH08210388A (en) | 1996-08-20 |
| JP3295264B2 true JP3295264B2 (en) | 2002-06-24 |
Family
ID=12543888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03910895A Expired - Fee Related JP3295264B2 (en) | 1995-02-02 | 1995-02-02 | Electromagnetic coupling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3295264B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6664616B2 (en) | 1996-11-21 | 2003-12-16 | Hitachi, Ltd. | Semiconductor device and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116025646B (en) * | 2023-03-22 | 2023-06-16 | 航天轩宇(杭州)智能科技有限公司 | Turning device and upset control system |
-
1995
- 1995-02-02 JP JP03910895A patent/JP3295264B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6664616B2 (en) | 1996-11-21 | 2003-12-16 | Hitachi, Ltd. | Semiconductor device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08210388A (en) | 1996-08-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |