JPS647451Y2 - - Google Patents
Info
- Publication number
- JPS647451Y2 JPS647451Y2 JP1982005507U JP550782U JPS647451Y2 JP S647451 Y2 JPS647451 Y2 JP S647451Y2 JP 1982005507 U JP1982005507 U JP 1982005507U JP 550782 U JP550782 U JP 550782U JP S647451 Y2 JPS647451 Y2 JP S647451Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic tape
- tape sliding
- recess
- sliding contact
- contact surface
- 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
Links
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000002950 deficient Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、主として、ビデオ・テープ・レコー
ダの音声信号消去用として使用される磁気ヘツド
に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates primarily to a magnetic head used for erasing audio signals of video tape recorders.
〈従来の技術〉
従来のこの種の磁気ヘツドは、第１図及び第２
図に例示するように、ヘツド素子を内蔵させたケ
ース１の磁気テープ摺接面２に、ヘツド素子のヘ
ツド部分３を臨ませる一方、磁気テープの走行方
向に位置する側面４，５の磁気テープ摺接面２寄
りにネジ孔６を貫設し、側面４または５の少なく
とも一方に、ネジ孔６内を貫通させたネジ７のネ
ジ頭７ａを収納させる凹部８を設けた構造となつ
ていた。<Prior art> This kind of conventional magnetic head is shown in FIGS. 1 and 2.
As illustrated in the figure, the head part 3 of the head element faces the magnetic tape sliding contact surface 2 of the case 1 in which the head element is built, while the magnetic tape is placed on the side surfaces 4 and 5 located in the running direction of the magnetic tape. A screw hole 6 is provided near the sliding surface 2, and a recess 8 is provided in at least one of the side surfaces 4 or 5 to receive a screw head 7a of a screw 7 passed through the screw hole 6. .
〈考案が解決しようとする課題〉
ところが、従来のものは、凹部８が円状の閉じ
た形状となつていて、しかも磁気テープ摺接面２
と凹部８との間の部分Ａが、例えば0.2〜0.3mm程
度の微小寸法となるため、磁気テープ摺接面２の
研磨時或は研磨後の洗浄や工程間の移動時等に、
部分Ａが簡単に破損してしまい、それが原因とな
つて当該磁気ヘツドの使用時に磁気テープに損傷
を与えるという欠点があつた。この欠点はケース
１をセラミツクによつて構成した場合に特に顕著
であつた。<Problem to be solved by the invention> However, in the conventional device, the recess 8 has a circular closed shape, and the magnetic tape sliding contact surface 2
Since the portion A between the and the recess 8 has a minute dimension of, for example, about 0.2 to 0.3 mm, when polishing the magnetic tape sliding contact surface 2, cleaning after polishing, moving between processes, etc.
There was a drawback that part A was easily damaged, which caused damage to the magnetic tape when the magnetic head was used. This drawback was particularly noticeable when the case 1 was made of ceramic.
また、磁気テープ摺接面２を研磨した場合、第
３図に示すように、部分Ａが鋭角になるため、こ
の鋭角な刃状の部分Ａによつて、磁気テープ９が
切断されてしまつたり、部分Ａにクラツクや破損
を生じる危険性もあつた。これらの不良発生確率
は低いものであるけれども、仮に１個でも発生し
た場合には、そのロツト全体が不良となつてまう
ため、あつてはならないものである。 Furthermore, when the magnetic tape sliding contact surface 2 is polished, the portion A becomes an acute angle, as shown in FIG. There was also a risk that part A would crack or break. Although the probability of these defects occurring is low, if even one occurs, the entire lot will be defective, which is unacceptable.
更に、凹部８が閉じられているため、ケース１
の成形が容易でなく、しかも金型の摩耗が激し
く、型寿命が短かくなるという難点もあつた。 Furthermore, since the recess 8 is closed, the case 1
It was not easy to mold the mold, and the mold was subject to severe wear, resulting in a shortened mold life.
そこで、本考案の課題は、上述する従来の欠点
を除去し、ケースの不良品の発生、磁気テープの
損傷、切断等の事故を防止すると共に、ケースの
成形を容易にし、型寿命を延長できるようにした
磁気ヘツドを提供することである。 Therefore, the object of this invention is to eliminate the above-mentioned conventional drawbacks, prevent accidents such as the occurrence of defective cases, damage to magnetic tape, and cutting, while also making it easier to mold cases and extending the life of the mold. An object of the present invention is to provide a magnetic head according to the present invention.
〈課題を解決するための手段〉
上述した課題解決のため、本考案は、ケースの
側面の磁気テープ摺接面寄りにネジ頭を収納させ
る凹部を有する磁気ヘツドにおいて、前記凹部
は、底面が前記磁気テープ摺接面に連なるよう、
前記磁気テープ摺接面に開口しており、前記凹部
の前記底面と前記磁気テープ摺接面とのなす内角
は、鈍角となつていることを特徴とする。<Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention provides a magnetic head having a recess for accommodating a screw head on a side surface of a case near the magnetic tape sliding contact surface, wherein the recess has a bottom surface facing the magnetic tape sliding surface. so that it connects to the magnetic tape sliding surface.
The recess is open to the magnetic tape sliding surface, and an internal angle between the bottom surface of the recess and the magnetic tape sliding surface is an obtuse angle.
〈作用〉
凹部は、底面が磁気テープ摺接面に連なるよ
う、磁気テープ摺接面に開口しており、凹部の底
面と磁気テープ摺接面とのなす内角は、鈍角とな
つているから、ケースの破損やクラツクが防止で
きる。また、鋭角な刃状の部分もなくなる。この
ため、ケースをセラミツクで形成した場合でも、
不良品の発生、磁気テープの損傷、切断等の事故
を防止することができる。<Function> The recess is open to the magnetic tape sliding surface so that the bottom surface is continuous with the magnetic tape sliding surface, and the internal angle between the bottom of the recess and the magnetic tape sliding surface is an obtuse angle. This prevents damage and cracking of the case. Also, there are no sharp blade-like parts. Therefore, even if the case is made of ceramic,
Accidents such as the production of defective products, damage to the magnetic tape, and cutting can be prevented.
また、凹部は、底面が磁気テープ摺接面に連な
るよう、磁気テープ摺接面に開口しているから、
ケースの成形時の型抜きが容易になり、型の寿命
を延ばすことができる。 In addition, since the recess is open to the magnetic tape sliding contact surface so that the bottom surface is continuous with the magnetic tape sliding contact surface,
The mold can be easily removed during case molding, and the life of the mold can be extended.
〈実施例〉
第４図は本考案に係る磁気ヘツドの正面図、第
５図は第４図のＣ−Ｃ線上における断面図であ
る。図において、第１図及び第２図と同一の参照
符号は同一性ある構成部分を示している。図示す
るように、ケース１の側面４の磁気テープ摺接面
２寄りに、ネジ頭を収納させる凹部８を有する磁
気ヘツドにおいて、凹部８は、底面８１が磁気テ
ープ摺接面８に連なるよう、磁気テープ摺接面２
に開口している。凹部８の底面８１と磁気テープ
摺接面２とのなす内角βは鈍角となつている。<Embodiment> FIG. 4 is a front view of a magnetic head according to the present invention, and FIG. 5 is a sectional view taken along line CC in FIG. 4. In the figures, the same reference numerals as in FIGS. 1 and 2 indicate the same components. As shown in the figure, in a magnetic head having a recess 8 for storing a screw head on the side surface 4 of the case 1 near the magnetic tape sliding contact surface 2, the recess 8 is arranged so that the bottom surface 81 is connected to the magnetic tape sliding contact surface 8. Magnetic tape sliding contact surface 2
It is open to The internal angle β between the bottom surface 81 of the recess 8 and the magnetic tape sliding surface 2 is an obtuse angle.
上述のように、凹部８を、底面８１が磁気テー
プ摺接面８に連なるよう、磁気テープ摺接面２に
開口させ、凹部８の底面８１と磁気テープ摺接面
２とのなす内角βを鈍角にすると、ケースに破損
やクラツク等が発生しにくくなる。また、刃状部
分もなくなる。このため、ケース１をセラミツク
で形成した場合でも、不良品の発生、磁気テープ
の損傷、切断等の事故を防止することができる。
第１図〜第３図に示す従来例との比較では、不良
率を２桁程度改善できる、
また、凹部８を底面８１が磁気テープ摺接面８
に連なるよう、磁気テープ摺接面２に開口させて
あるので、ケース１の成形時の型抜きが容易にな
り、型の寿命を延ばすことができる。 As described above, the recess 8 is opened in the magnetic tape sliding contact surface 2 so that the bottom surface 81 is continuous with the magnetic tape sliding contact surface 8, and the internal angle β between the bottom surface 81 of the recess 8 and the magnetic tape sliding contact surface 2 is An obtuse angle makes it difficult for the case to be damaged or cracked. Also, the blade-like part is also eliminated. Therefore, even if the case 1 is made of ceramic, accidents such as the production of defective products, damage to the magnetic tape, and cutting can be prevented.
In comparison with the conventional example shown in FIGS. 1 to 3, the defective rate can be improved by about two orders of magnitude.
Since the magnetic tape sliding contact surface 2 is opened so as to be continuous with the magnetic tape sliding contact surface 2, the mold can be easily removed during molding of the case 1, and the life of the mold can be extended.
〈考案の効果〉
以上述べたように、本考案は、ケースの側面の
磁気テープ摺接面寄りにネジ頭を収納させる凹部
を有する磁気ヘツドにおいて、凹部は、底面が磁
気テープ摺接面に連なるよう、磁気テープ摺接面
に開口しており、凹部の底面と磁気テープ摺接面
とのなす内角は、鈍角となつているから、ケース
の不良品の発生、磁気テープの損傷、切断等の事
故を防止し得る磁気ヘツドを提供できる。<Effects of the Invention> As described above, the present invention provides a magnetic head having a recess for storing a screw head near the magnetic tape sliding contact surface on the side surface of the case, in which the bottom of the recess is connected to the magnetic tape sliding contact surface. The opening is open on the magnetic tape sliding surface, and the internal angle between the bottom of the recess and the magnetic tape sliding surface is an obtuse angle, which prevents the occurrence of defective cases, damage to the magnetic tape, cutting, etc. A magnetic head that can prevent accidents can be provided.
また、凹部は、底面が磁気テープ摺接面に連な
るよう、磁気テープ摺接面に開口しているから、
ケースの成形を容易にし、型寿命を延長し得る磁
気ヘツドを提供することができる。 In addition, since the recess is open to the magnetic tape sliding contact surface so that the bottom surface is continuous with the magnetic tape sliding contact surface,
It is possible to provide a magnetic head that facilitates molding of the case and extends the life of the mold.
第１図は従来の磁気ヘツドの正面図、第２図は
第１図のＢ−Ｂ線上における断面図、第３図は従
来の磁気ヘツドの欠点を説明する図、第４図は本
考案に係る磁気ヘツドの正面図、第５図は第４図
のＣ−Ｃ線上における断面図である。
１……ケース、２……磁気テープ摺接面、４，
５……側面、８……凹部。
Fig. 1 is a front view of a conventional magnetic head, Fig. 2 is a sectional view taken along line B-B in Fig. 1, Fig. 3 is a diagram illustrating the drawbacks of the conventional magnetic head, and Fig. 4 is a diagram illustrating the present invention. FIG. 5, which is a front view of such a magnetic head, is a sectional view taken along line CC in FIG. 4. 1...Case, 2...Magnetic tape sliding surface, 4,
5...Side surface, 8...Concave portion.
Claims (1)
頭を収納させる凹部を有する磁気ヘツドにおい
て、前記凹部は、底面が前記磁気テープ摺接面
に連なるよう、前記磁気テープ摺接面に開口し
ており、前記凹部の前記底面と前記磁気テープ
摺接面とのなす内角は、鈍角となつていること
を特徴とする磁気ヘツド。 (2) 前記ケースは、セラミツクで成ることを特徴
とする実用新案登録請求の範囲第１項に記載の
磁気ヘツド。[Claims for Utility Model Registration] (1) In a magnetic head having a recess for storing a screw head near the magnetic tape sliding contact surface on the side surface of the case, the recess has a bottom surface connected to the magnetic tape sliding contact surface; A magnetic head having an opening in the magnetic tape sliding contact surface, and an internal angle between the bottom surface of the recess and the magnetic tape sliding contact surface being an obtuse angle. (2) The magnetic head according to claim 1, wherein the case is made of ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP550782U JPS58125220U (en) | 1982-01-19 | 1982-01-19 | magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP550782U JPS58125220U (en) | 1982-01-19 | 1982-01-19 | magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58125220U JPS58125220U (en) | 1983-08-25 |
| JPS647451Y2 true JPS647451Y2 (en) | 1989-02-28 |
Family
ID=30018308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP550782U Granted JPS58125220U (en) | 1982-01-19 | 1982-01-19 | magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58125220U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517303U (en) * | 1978-07-19 | 1980-02-04 | ||
| JPS5655782U (en) * | 1979-10-08 | 1981-05-14 |
-
1982
- 1982-01-19 JP JP550782U patent/JPS58125220U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517303U (en) * | 1978-07-19 | 1980-02-04 | ||
| JPS5655782U (en) * | 1979-10-08 | 1981-05-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58125220U (en) | 1983-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS647451Y2 (en) | ||
| US4779157A (en) | A Shaft having a groove for a video tape cartridge and metallic molds for its preparation | |
| JPH056612Y2 (en) | ||
| KR950009715Y1 (en) | Jarket for micro floppy disc | |
| JP3021201U (en) | Erasing head | |
| JP2962604B2 (en) | Magnetic head | |
| JPS6334776Y2 (en) | ||
| JPS632976Y2 (en) | ||
| JPS58155677U (en) | Magnetic sheet jacket shutter plate | |
| JPH0454638Y2 (en) | ||
| JPS6020162Y2 (en) | Recycled needles for stampers | |
| JPS5832153U (en) | piston ring | |
| JPH0240565Y2 (en) | ||
| KR830001766B1 (en) | Tape cassette | |
| JPH044161Y2 (en) | ||
| KR930000741Y1 (en) | Upper head drum for vcr | |
| JPS5486316A (en) | Rotary head apparatus | |
| JPH04259518A (en) | Mold for molding disc | |
| JPS59156774U (en) | Windscreen molding installation tool | |
| JPS59149218U (en) | magnetic head | |
| JPH0324301B2 (en) | ||
| JPS5863961U (en) | lap surface plate | |
| JPS6026149U (en) | Operation button structure | |
| JPH01192074A (en) | Cassette tape recorder | |
| JPS6163977A (en) | Tape cassette |