JPH0135345Y2

JPH0135345Y2 -

Info

Publication number: JPH0135345Y2
Application number: JP19983483U
Authority: JP
Priority date: 1983-12-31
Filing date: 1983-12-31
Publication date: 1989-10-27
Also published as: JPS60123775U

Description

【考案の詳細な説明】〔考案の技術分野〕本考案は、情報処理システムにおける外部記憶
装置として使用される磁気デイスク装置用の磁気
ヘツド組立体に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a magnetic head assembly for a magnetic disk device used as an external storage device in an information processing system.

[Technology background]

第１図は磁気デイスク用磁気ヘツド組立体の全
容を示す図で、ロは平面図、イはロ図のイ−イ断
面図である。１は磁気デイスクで、矢印a₁方向に
回転し、その上に磁気ヘツドが配設される。磁気
ヘツドは、スライダ２の端部にコア３を取り付
け、該コア３にコイル４を巻回した構成になつて
いる。薄い板バネからなるジンバル５のブリツジ
６に形成された１対の爪７ａ，７ｂを、スライダ
背面の溝８に圧入して加締めると共に接着材を塗
布することで、磁気ヘツドはジンバル５を介し
て、駆動アーム９に取り付けられる。またロード
アーム１０の先端で、ブリツジ６の中央のダボ１
１を押圧することで、磁気ヘツドを矢印a₂方向に
押圧する。すると磁気デイスク１が矢印a₁方向に
回転した際に、スライダ先端の傾斜面１２から入
り込む空気力で、スライダ２が矢印a₂方向の押圧
力に抗して1μm以下の微少量浮上する。このよう
な浮上状態で、磁気ギヤツプ１３により磁気デイ
スク１上に情報の読書きが行われる。 FIG. 1 is a diagram showing the entire structure of a magnetic head assembly for a magnetic disk, in which B is a plan view and A is a sectional view taken along the line A--I in FIG. Reference numeral 1 denotes a magnetic disk, which rotates in the direction of arrow _a1 , on which a magnetic head is disposed. The magnetic head has a structure in which a core 3 is attached to the end of a slider 2, and a coil 4 is wound around the core 3. By press-fitting a pair of claws 7a and 7b formed on the bridge 6 of the gimbal 5 made of a thin leaf spring into the groove 8 on the back of the slider and tightening them, and applying an adhesive, the magnetic head can be inserted through the gimbal 5. and is attached to the drive arm 9. Also, at the tip of the load arm 10, dowel 1 in the center of the bridge 6
By pressing 1, the magnetic head is pressed in the direction of arrow _a2 . Then, when the magnetic disk 1 rotates in the direction of arrow _a1 , the slider 2 floats by a minute amount of 1 μm or less against the pressing force in the direction of arrow _a2 due to the aerodynamic force that enters from the inclined surface 12 at the tip of the slider. In this floating state, information is read and written onto the magnetic disk 1 by the magnetic gap 13.

[Prior art and its problems]

ところで矢印a₂方向の押圧力を得ると共に耐振
動性を得るために、第２図のような工夫がなされ
ている。この図で、イは表面図即ち磁気デイスク
１側から見た図、ロは右側面図、ハは背面図即ち
上側から見た図である。また、第３図は、ロード
アームと板バネ先端との結合部を拡大して示す斜
視図である。ジンバル５の２つのアーム５ａ，５
ｂ間に、ジンバル５と一体の板バネ１４が形成さ
れ、この板バネ１４は、予めロに鎖線で示すよう
に磁気デイスク１側に湾曲されている。そしてこ
の湾曲した板バネ１４の先端１４ａに、２本の凸
条１５，１６と、両凸条１５，１６間に形成され
た凹溝１７から成る断面凹字状のロードアーム１
０が固着されている。ロードアーム１０と板バネ
１４の先端１４ａは、×印１９…で示すように、
凹溝１７の底部１７ａで３個所、ロードアーム１
０の両側に形成された脚部２０，２１でそれぞれ
２個所スポツト熔接されている。そしてロードア
ーム１０の先端の磁気ヘツド側に、細長いダボ２
２が形成され、このダボ２２がジンバル５のブリ
ツジ６のダボ１１上に点接触するようになつてい
る。したがつてジンバル５は、板バネ１４による
矢印a₂方向のバネ力で、ロに示すように矢印a₂側
に偏倚する。この矢印a₂方向のバネ力で、磁気ヘ
ツドが磁気デイスク１側に押圧され、この押圧力
に抗して磁気ヘツドが浮上する。なお磁気ヘツド
のコイル４のリード線は、凹溝１７中を通つて引
き出される。 By the way, in order to obtain a pressing force in _{the two} directions indicated by arrow a and vibration resistance, a device as shown in Fig. 2 has been devised. In this figure, A is a front view, that is, a view seen from the magnetic disk 1 side, B is a right side view, and C is a rear view, that is, a view seen from above. Further, FIG. 3 is an enlarged perspective view showing a connecting portion between the load arm and the tip of the leaf spring. Two arms 5a, 5 of gimbal 5
A plate spring 14, which is integral with the gimbal 5, is formed between b and b, and this plate spring 14 is bent in advance toward the magnetic disk 1, as shown by the chain line in b. The load arm 1 has a concave cross-section and includes two protrusions 15 and 16 and a groove 17 formed between the protrusions 15 and 16 at the tip 14a of the curved leaf spring 14.
0 is fixed. The tips 14a of the load arm 10 and the leaf spring 14 are as shown by the cross marks 19...
At three locations on the bottom 17a of the concave groove 17, the load arm 1
The leg portions 20 and 21 formed on both sides of the 0 are spot welded at two locations, respectively. Then, on the magnetic head side at the tip of the load arm 10, there is a long and narrow dowel 2.
2 is formed, and this dowel 22 is in point contact with the dowel 11 of the bridge 6 of the gimbal 5. Therefore, the gimbal 5 is biased toward the arrow a ₂ side as shown in b by the spring force of the leaf spring 14 in the arrow a ₂ direction. The magnetic head is pressed toward the magnetic disk 1 by this spring force in the direction of arrow _a2 , and the magnetic head floats against this pressing force. The lead wire of the coil 4 of the magnetic head is drawn out through the groove 17.

ところがジンバル５は、数十μmという極めて
薄い板バネ材でできているので、板バネ１４とし
てジンバル５と別体の板厚の厚い材料を使用しな
い限り、板バネ１４のバネ性が弱い。そのため、
磁気ヘツドをシークする際の機械的な振動に板バ
ネ１４が共振し、ロードアーム１０を介して磁気
ヘツドを振動させる恐れがある。その結果ヘツド
クラツシユを引き起こしたり、読書きエラーを招
く恐れがある。 However, since the gimbal 5 is made of an extremely thin leaf spring material of several tens of μm, the springiness of the leaf spring 14 is weak unless a thick material separate from the gimbal 5 is used as the leaf spring 14. Therefore,
There is a possibility that the leaf spring 14 resonates with the mechanical vibrations when the magnetic head seeks, causing the magnetic head to vibrate via the load arm 10. As a result, there is a risk of causing a head crash or reading/writing errors.

[Purpose of invention]

本考案の目的は、従来の磁気ヘツド組立体にお
けるこのような問題を解消し、ロードアームに押
圧力を与えるための板バネをジンバルと一体構成
とするものにおいても、ロードアームが共振を起
こし難いようにすることにある。 The purpose of this invention is to solve these problems in conventional magnetic head assemblies, and to make it difficult for the load arm to resonate even in devices where the leaf spring for applying pressing force to the load arm is integrated with the gimbal. The purpose is to do so.

（考案の構成）この目的を達成するために講じた本考案による
技術的手段は、磁気ヘツドをジンバルに取り付
け、このジンバルと一体の板バネにロードアーム
を接合し、このロードアームの先端で磁気ヘツド
を磁気デイスク側に押圧する構成の磁気ヘツド組
立体であつて、該ロードアームは前記板バネとの
接合面が「ハ」の字状に形成されており、前記板
バネが該ロードアームの「ハ」の字状の接合面と
接合されて成る構成を採つている。(Structure of the invention) The technical means of the invention taken to achieve this purpose is to attach a magnetic head to a gimbal, connect a load arm to a leaf spring that is integrated with the gimbal, and attach a magnetic head to the tip of the load arm. The magnetic head assembly is configured to press the head toward the magnetic disk, and the load arm has a joint surface with the plate spring formed in a "V" shape, and the plate spring is connected to the load arm. It has a configuration in which it is joined to a "C" shaped joint surface.

[Example of idea]

次に本考案による磁気ヘツド組立体が実際上ど
のように具体化されるかを実施例で説明する。第
４図は本考案による磁気ヘツド組立体の実施例
で、ロードアームと板バネとの結合部を示してい
る。イは結合前の状態、ロは結合後の状態をそれ
ぞれ示す。ロードアーム１８が、互いに平行な２
つの凸条１５，１６と、両凸条１５，１６間の凹
溝１７で断面凹字状に構成される点は従来と変わ
りないが、取り付け脚２０ａ，２１ａは、末広り
となるようにハ字状に傾斜させてある。また凹溝
１７の底部１７ａより取り付け脚２０ａ，２１ａ
をｈだけ低くして、段差を付けてある。 Next, examples will be used to explain how the magnetic head assembly according to the present invention is actually implemented. FIG. 4 shows an embodiment of the magnetic head assembly according to the present invention, showing the connecting portion between the load arm and the leaf spring. A indicates the state before the combination, and B indicates the state after the combination. Two load arms 18 are parallel to each other.
The two protrusions 15, 16 and the concave groove 17 between the two protrusions 15, 16 are the same as in the past, but the attachment legs 20a, 21a are shaped so that they widen at the end. It is slanted in the shape of a letter. Also, the mounting legs 20a, 21a are attached from the bottom 17a of the groove 17.
is lowered by h to create a step.

ロードアーム１８の剛性が板バネ１４のそれよ
り大きくなるように、板厚を厚くするなどの工夫
がなされている。そのため、凹溝１７の底部１７
ａおよび取り付け脚２０ａ，２１ａに板バネ先端
１４ａを重ねてスポツト熔接などで固定すると、
ロに示すように、板バネ先端１４ａがロードアー
ム１８の底面にならつてカマボコ状に湾曲する。
その結果板バネ先端１４ａ自身の剛性が増大す
る。また平らな板バネ１４が徐々に湾曲して先端
がカマボコ状になるので、境界部の剛性も増大す
る。このように板バネ１４側の剛性が強くなるこ
とで、シーク動作時に振動を受けても、ロードア
ーム１８は共振し難く、磁気ヘツドの振動が抑制
される。 Efforts have been made to increase the plate thickness so that the rigidity of the load arm 18 is greater than that of the plate spring 14. Therefore, the bottom 17 of the groove 17
When the leaf spring tip 14a is stacked on the mounting legs 20a and 21a and fixed by spot welding or the like,
As shown in FIG. 2, the tip 14a of the leaf spring curves in a semicircular shape along the bottom surface of the load arm 18.
As a result, the rigidity of the leaf spring tip 14a itself increases. Furthermore, since the flat leaf spring 14 gradually curves and its tip becomes semicylindrical, the rigidity of the boundary portion also increases. By increasing the rigidity of the leaf spring 14 in this way, even if it receives vibration during a seek operation, the load arm 18 is less likely to resonate, and the vibration of the magnetic head is suppressed.

[Effect of idea]

以上のように本考案によれば、ロードアームの
板バネ先端との結合面を、板バネ先端が湾曲する
ように、ロードアームの凹溝の底部より両側の取
り付け脚部を低くすると共に、該２つの取り付け
脚をハ字状に角部を付け、この取り付け脚および
凹溝底部に、前記板バネ先端を固定する構成にな
つている。そのため、板バネ先端が湾曲して剛性
が増大し、ロードアームが共振し難くなるので、
磁気ヘツドの振動が抑制され、ヘツドクラツシユ
や読書きミスが未然に防止される。 As described above, according to the present invention, the connection surface of the load arm with the tip of the leaf spring is made lower than the bottom of the concave groove of the load arm, and the mounting legs on both sides are lowered so that the end of the leaf spring is curved. The two mounting legs are formed into a V-shape with corner portions, and the tip of the leaf spring is fixed to the mounting legs and the bottom of the groove. Therefore, the tip of the leaf spring is curved and its rigidity increases, making it difficult for the load arm to resonate.
Vibration of the magnetic head is suppressed, and head crashes and reading/writing errors are prevented.

[Brief explanation of drawings]

第１図は従来の磁気ヘツド組立体の全容を示す
断面図と平面図、第２図は従来の磁気ヘツド組立
体の要部を示す表面図、側面図、背面図、第３図
は従来のロードアームと板バネ先端との結合部を
拡大して示す斜視図、第４図は本考案による磁気
ヘツド組立におけるロードアームと板バネ先端と
の結合部を示す断面図で、イは結合前の状態、ロ
は結合後の状態をそれぞれ示す。図において、１は磁気デイスク、２はスライ
ダ、５はジンバル、１４は板バネ、１４ａは板バ
ネ先端、１８はロードアーム、１５，１６は凸
条、１７は凹溝、１７ａは凹溝の底部、２０ａ，
２１ａは取り付け脚をそれぞれ示す。 Fig. 1 is a sectional view and a plan view showing the entire structure of a conventional magnetic head assembly, Fig. 2 is a surface view, side view, and rear view showing the main parts of a conventional magnetic head assembly, and Fig. 3 is a conventional magnetic head assembly. FIG. 4 is an enlarged perspective view showing the joint between the load arm and the tip of the leaf spring, and FIG. State and b indicate the state after combination, respectively. In the figure, 1 is a magnetic disk, 2 is a slider, 5 is a gimbal, 14 is a leaf spring, 14a is the tip of the leaf spring, 18 is a load arm, 15 and 16 are protrusions, 17 is a groove, and 17a is the bottom of the groove. ,20a,
21a each indicates a mounting leg.

Claims

[Scope of utility model registration request]

A magnetic head assembly having a configuration in which a magnetic head is attached to a gimbal, a load arm is connected to a leaf spring integrated with the gimbal, and the magnetic head is pressed toward a magnetic disk with the tip of the load arm,
The joint surface of the load arm with the plate spring is "C".
1. A magnetic head assembly characterized in that the magnetic head assembly is formed in a ``V'' shape, and the plate spring is joined to a ``V'' shaped joint surface of the load arm.