JPH0433568Y2 - - Google Patents
Info
- Publication number
- JPH0433568Y2 JPH0433568Y2 JP1986017517U JP1751786U JPH0433568Y2 JP H0433568 Y2 JPH0433568 Y2 JP H0433568Y2 JP 1986017517 U JP1986017517 U JP 1986017517U JP 1751786 U JP1751786 U JP 1751786U JP H0433568 Y2 JPH0433568 Y2 JP H0433568Y2
- Authority
- JP
- Japan
- Prior art keywords
- press
- shaft
- cross
- upper flange
- fit hole
- 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
- 239000002184 metal Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Rolls And Other Rotary Bodies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、シヤフト等を圧入する部分を有する
組立体、例えばビデオテープレコーダ用ガイドロ
ーラの構造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of an assembly having a portion into which a shaft or the like is press-fitted, such as a guide roller for a video tape recorder.
第８図は、この種のガイドローラ組立体を示し
たものである。下フランジ１８を圧入によりステ
ンレス製シヤフト１１に固定し、下フランジ１８
の上に、合成樹脂製のガイドローラ１９をシヤフ
ト１１に対して回転自在に装着し、ガイドローラ
１９の上に、上フランジ１２を圧入によりシヤフ
ト１１に嵌着してある。
FIG. 8 shows this type of guide roller assembly. The lower flange 18 is fixed to the stainless steel shaft 11 by press fitting, and the lower flange 18
A guide roller 19 made of synthetic resin is rotatably mounted on the shaft 11, and an upper flange 12 is press-fitted onto the shaft 11 on the guide roller 19.
第９図に示すように上フランジ１２には、横断
面形状が円形のシヤフト１１に対応する横断面形
状が円形の圧入孔１３と、走行中の磁気テープの
振れによる乗り上げを解消するためのテーパ部１
４と、後述する治具Ａによる押圧を受ける当接面
１５と、治具Ａの先端を合わせ差し込む溝１６等
が形成してある。上フランジ１２を嵌着する場合
は、ガイドローラ１９をシヤフト１１に装着した
後、治具Ａの先端を仮嵌着した上フランジ１２の
溝１６に合わせ差し込み、回転しつつ押圧してシ
ヤフト１１に対する位置決めを行うことなる。こ
のようにして、先に圧入した下フランジ１８とと
もに、ガイドローラ１９、上フランジ１２を所定
の位置に保持する。 As shown in FIG. 9, the upper flange 12 has a press-fit hole 13 with a circular cross-sectional shape corresponding to the shaft 11 with a circular cross-sectional shape, and a taper to prevent the magnetic tape from running over due to vibration during running. Part 1
4, an abutment surface 15 that receives pressure from a jig A to be described later, and a groove 16 into which the tip of the jig A is aligned and inserted. When fitting the upper flange 12, after attaching the guide roller 19 to the shaft 11, insert the tip of the jig A into the groove 16 of the temporarily fitted upper flange 12, press it while rotating, and press it against the shaft 11. Positioning will be performed. In this way, the guide roller 19 and the upper flange 12 are held in place along with the lower flange 18 that was press-fitted earlier.
しかし、前述したようなガイドローラ組立体の
場合、上フランジ１２の圧入孔１３は、しばりば
め状態の関係にあるシヤフト１１に合わせて、極
めて高い真円度を必要とする。けれども、焼結金
属やプレス成形では必要な真円度が得られず、こ
のため従来は、圧入孔１３の形成に切削加工工程
が不可欠で、その結果、上フランジ１２の量産性
の向上を図るのは困難であつた。下フランジ１８
についても、同様である。
However, in the case of the guide roller assembly described above, the press-fit hole 13 of the upper flange 12 requires extremely high roundness to match the shaft 11 in a tight fit relationship. However, the necessary roundness cannot be obtained with sintered metal or press forming, and for this reason, conventionally, a cutting process is indispensable for forming the press-fit hole 13, and as a result, the mass productivity of the upper flange 12 is improved. It was difficult. Lower flange 18
The same applies to .
また、溝１６を形成するに際し、溝１６が圧入
孔１３と交差した場合に生じる圧入孔１３の内壁
のバリの発生の防止策も必要である。すなわち、
第１０図に示すように、圧入孔１３の上部に逃が
し孔１７を形成し、溝１６は逃がし孔１７と交差
するようにしなければならず、このための加工工
数が増大し、製造コストが高くなる等の不都合が
あつた。 Furthermore, when forming the groove 16, it is necessary to take measures to prevent burrs from forming on the inner wall of the press-fit hole 13, which would occur if the groove 16 intersects with the press-fit hole 13. That is,
As shown in FIG. 10, a relief hole 17 must be formed in the upper part of the press-fit hole 13, and the groove 16 must intersect with the relief hole 17, which increases the number of processing steps and increases the manufacturing cost. There were some inconveniences.
更に、圧入するシヤフト１１と圧入孔１３の相
互の位置合わせ、及び上フランジ１２を回転・押
圧しつつ行う圧入作業には、細心の注意を必要と
しており、組立て作業は面倒であつた。本考案は
かかる実情に鑑み、量産性に優れるとともに、簡
便に圧入作業ができるうにしたガイドローラ組立
体を提供することを目的としている。 Furthermore, careful attention was required to align the shaft 11 to be press-fitted with the press-fit hole 13, and to perform the press-fitting operation while rotating and pressing the upper flange 12, making the assembly work troublesome. In view of the above circumstances, it is an object of the present invention to provide a guide roller assembly that is excellent in mass productivity and can be easily press-fitted.
本考案によるガイドローラ組立体は、上フラン
ジ（下フランジも同様）と圧入嵌着するシヤフト
の外周面に対して、該上フランジには部分的に圧
接し得る例えば多角形状の圧入孔を形成すること
により、該上フランジを該シヤフトに嵌着するよ
うに構成してある。したがつて、該上フランジと
該シヤフトとのの嵌着部の横断面形状は、いずれ
か一方が円形、他方が多角形で接触しており、従
来のように両者がともに高い真円度の円形である
ことはない。その結果、該上フランジの該圧入孔
の寸法精度を緩和することができ、該圧入孔の切
削加工を必要としなくなり、例えば焼結金属によ
る形成が適用できるとともに、該シヤフトとの適
確な圧入作業が容易に行えるようになる。
The guide roller assembly according to the present invention forms, for example, a polygonal press-fit hole that can be partially pressed into contact with the upper flange on the outer peripheral surface of the shaft that is press-fitted with the upper flange (the same applies to the lower flange). Accordingly, the upper flange is configured to fit onto the shaft. Therefore, the cross-sectional shapes of the fitting portions of the upper flange and the shaft are circular on one side and polygonal on the other, and both have high roundness as in the past. It is never circular. As a result, the dimensional accuracy of the press-fit hole of the upper flange can be relaxed, and cutting of the press-fit hole is no longer necessary, and for example, formation of sintered metal can be applied, and the press-fit hole can be accurately press-fitted with the shaft. Work becomes easier.
第１図〜第３図は、本考案によるガイドローラ
組立体の第１実施例を示している。１は円形の横
断面形状を有する金属製のシヤフト、８は焼結金
属等により成形しシヤフト１の下側に嵌着してあ
る下フランジ、９はシヤフト１に回転可能に装着
してある合成樹脂製のガイドローラ、２は焼結金
属等により成形しガイドローラ９の上方でシヤフ
ト１に嵌着してある上フランジである。そうし
て、ガイドローラ９の回転を妨げないように、上
フランジ２とガイドローラ９との間には、適正な
間隙がある。
1 to 3 show a first embodiment of a guide roller assembly according to the present invention. 1 is a metal shaft having a circular cross-sectional shape; 8 is a lower flange molded from sintered metal or the like and fitted to the underside of the shaft 1; 9 is a synthetic material rotatably attached to the shaft 1; The guide roller 2 made of resin is an upper flange molded from sintered metal or the like and fitted onto the shaft 1 above the guide roller 9. Thus, there is an appropriate gap between the upper flange 2 and the guide roller 9 so as not to hinder the rotation of the guide roller 9.
上フランジ２は次の各部を有し形成してある。
３は横断面形状が多角形、すなわち第３図例示で
はシヤフト１の円周に接触する六角形で示してあ
る圧入孔、４は上部周面に形成したテーパ部、５
はシヤフト１を圧入孔３内へ圧入する際に治具Ｂ
の下面ａが押圧する当接面、６は圧入孔３の上方
部を占め、上フランジ２のシヤフト１への圧入嵌
着に際し、治具Ｂ先端の横断面形状が六角形の突
部a′を合わせ差し込み、治具Ｂによつて上フラン
ジを回転するための六角形の角孔である。下フラ
ンジ８にも圧入孔があり、該圧入孔にシヤフト１
を圧入して、下フランジ８をシヤフト１の下側に
嵌着してある。 The upper flange 2 has the following parts.
Reference numeral 3 indicates a press-fit hole whose cross-sectional shape is polygonal, that is, a hexagonal shape in contact with the circumference of the shaft 1 in the example shown in FIG.
is the jig B when press-fitting the shaft 1 into the press-fitting hole 3.
A contact surface 6 pressed by the lower surface a occupies the upper part of the press-fit hole 3, and when press-fitting the upper flange 2 to the shaft 1, a protrusion a' whose cross-sectional shape is hexagonal at the tip of the jig B This is a hexagonal square hole into which the upper flange is rotated by jig B. The lower flange 8 also has a press-fit hole, and the shaft 1 is inserted into the press-fit hole.
is press-fitted, and the lower flange 8 is fitted to the lower side of the shaft 1.
本考案によるガイドローラ組立体は上記のよう
な構成であるので、横断面形状が円形のシヤフト
１に対して、上フランジ２の横断面形状が六角形
の圧入孔３は、従来のような高精度の寸法を必要
としなくなつた。そうして、上フランジ２を量産
性のある焼結金属により成形しても、シヤフト１
に対する圧入孔３の適正な寸法精度を確保できる
ので、従来のような切削加工は不要となり、その
結果、製作工数の低減、製作時間の短縮等により
製造コストの節減ができる。 Since the guide roller assembly according to the present invention has the above-mentioned configuration, the press-fit hole 3 of the upper flange 2, which has a hexagonal cross-section, has a higher height than the conventional shaft 1, which has a circular cross-section. Precision dimensions are no longer required. Even if the upper flange 2 is made of sintered metal that can be mass-produced, the shaft 1
Since appropriate dimensional accuracy of the press-fit hole 3 can be ensured, conventional cutting is not required, and as a result, manufacturing costs can be reduced by reducing manufacturing man-hours, shortening manufacturing time, etc.
また、上フランジ２のシヤフト１への圧入の
際、両者の上下方向の位置合わせは、従来のよう
に双方ともに横断面形状が円形であつた場合に比
較して、極めて容易である。特に、圧入孔３の下
端開口部にテーパを設ければ、一層容易になる。
更に、治具Ｂの突部a′を上フランジ２の角孔６に
合わせ差し込み、治具Ｂの下面ａで当接面５を押
圧しつつ回転し、シヤフト１に上フランジ２を簡
単かつ適確に圧入嵌着できる。 Furthermore, when press-fitting the upper flange 2 into the shaft 1, vertical alignment of the two is much easier than in the conventional case where both have circular cross-sectional shapes. In particular, if the lower end opening of the press-fit hole 3 is tapered, this will become easier.
Furthermore, the protrusion a' of the jig B is inserted into the square hole 6 of the upper flange 2, and the jig B is rotated while pressing the contact surface 5 with the lower surface a of the jig B to easily and properly attach the upper flange 2 to the shaft 1. Can be press-fitted securely.
第４図は第２実施例おけるシヤフト１と上フラ
ンジ２との嵌着部の横断面図であり、第５図は第
４図の−線断面における上フランジ２を示し
たものである。上フランジ２の圧入孔３の横断面
形状が六角形であり、圧入孔３の上方部の角孔６
は、横断面形状において上記六角形と相似でやや
大きく形成してある。なお、治具Ｂの突部a′の下
端が圧入孔３の上部角孔６の下面に当接するよう
に合わせ差し込み、上フランジ２を回転しつつ圧
入し、シヤフト１の上端と治具Ｂの突部a′の下端
とが当接すると、シヤフト１における上フランジ
２の位置が適正であるようにしておけば、圧入作
業が一層適確かつ簡便になる。 FIG. 4 is a cross-sectional view of the fitting portion between the shaft 1 and the upper flange 2 in the second embodiment, and FIG. 5 shows the upper flange 2 in cross section taken along the line -- in FIG. The cross-sectional shape of the press-fit hole 3 of the upper flange 2 is hexagonal, and the square hole 6 in the upper part of the press-fit hole 3
is similar in cross-sectional shape to the above-mentioned hexagon and is formed slightly larger. Insert the jig B so that the lower end of the protrusion a' is in contact with the lower surface of the upper square hole 6 of the press-fit hole 3, press fit while rotating the upper flange 2, and connect the upper end of the shaft 1 with the jig B. If the upper flange 2 is properly positioned on the shaft 1 when the lower end of the protrusion a' comes into contact with the lower end of the protrusion a', the press-fitting operation will be more appropriate and easier.
第３実施例の横断面形状を第６図、第６図−
線による上フランジ２の縦断面形状を第７図に
示してある。第３実施例は上フランジ２の圧入孔
３の横断面形状は円形に、圧入孔３の上方部の角
孔６の横断面形状は六角形に形成してあり、ま
た、対応するシヤフト１の上方嵌着部の横断面形
状が六角形に形成したもので、第１実施例、第２
実施例と同様の圧入効果が得られる。なお、上記
各実施例における上フランジ２の圧入孔３とシヤ
フト１の上方嵌着部及び下方嵌着部の形状が、相
互に逆の関係であつてもよい。 The cross-sectional shape of the third embodiment is shown in Fig. 6 and Fig. 6-
A vertical cross-sectional shape of the upper flange 2 is shown in FIG. In the third embodiment, the cross-sectional shape of the press-fit hole 3 of the upper flange 2 is circular, and the cross-sectional shape of the square hole 6 in the upper part of the press-fit hole 3 is hexagonal. The cross-sectional shape of the upper fitting part is hexagonal.
The same press-fitting effect as in the example can be obtained. In addition, the shapes of the press-fit hole 3 of the upper flange 2 and the upper fitting part and the lower fitting part of the shaft 1 in each of the above embodiments may be in an inverse relationship to each other.
また、上記においては、上フランジ２について
のみ述べたが、下フランジ８についても同様にな
すことができ、いずれの場合にも、適確かつ簡便
な圧入作業ができる。本考案において、上フラン
ジ２、下フランジ８は焼結金属のほか、プレス加
工によつて製作できる。この場合にも、製造コス
トの節減がもたらされる。 Furthermore, although only the upper flange 2 has been described above, the same can be applied to the lower flange 8, and in either case, an appropriate and simple press-fitting operation can be performed. In the present invention, the upper flange 2 and the lower flange 8 can be manufactured not only from sintered metal but also by press working. In this case too, manufacturing cost savings result.
上述のように、本考案によるガイドローラ組立
体は、フランジの量産性が向上するとともに、ガ
イドローラの組立が適確でしかも簡便になる等の
効果がある。
As described above, the guide roller assembly according to the present invention has advantages such as improving the mass productivity of flanges and making the assembly of the guide roller accurate and simple.
第１図〜第３図は本考案のガイドローラ組立体
の第１実施例を示し、第１図は全体の構造の縦断
面図、第２図は上フランジの斜視図、第３図は第
１図の−線断面図、第４図は第２実施例にお
けるシヤフトと上フランジとの嵌着部の横断面
図、第５図は第４図の−線における上フラン
ジ断面図、第６図は第３実施例におけるシヤフト
と上フランジとの嵌着部の横断面図、第７図は第
６図の−線における上フランジ断面図、第８
図は従来のガイドローラ組立体の縦断面図、第９
図及び第１０図は従来のガイドローラ組立体に係
る上フランジを示す斜視図及び縦断面図である。
１……シヤフト、２……上フランジ、３……圧
入孔、４……テーパ部、５……当接面、６……角
孔、８……下フランジ、９……ガイドローラ、Ｂ
……治具。
1 to 3 show a first embodiment of the guide roller assembly of the present invention, in which FIG. 1 is a longitudinal sectional view of the overall structure, FIG. 2 is a perspective view of the upper flange, and FIG. 1, FIG. 4 is a cross-sectional view of the fitting portion between the shaft and the upper flange in the second embodiment, FIG. 5 is a cross-sectional view of the upper flange taken along the line - in FIG. 4, and FIG. 7 is a cross-sectional view of the fitting portion between the shaft and the upper flange in the third embodiment, FIG. 7 is a cross-sectional view of the upper flange taken along the line - in FIG. 6, and FIG.
The figure is a vertical cross-sectional view of a conventional guide roller assembly.
1 and 10 are a perspective view and a vertical sectional view showing an upper flange of a conventional guide roller assembly. 1... Shaft, 2... Upper flange, 3... Press-fit hole, 4... Taper part, 5... Contact surface, 6... Square hole, 8... Lower flange, 9... Guide roller, B
……jig.
Claims (1)
ドローラを回転自在に装着してあり、該フラン
ジの圧入孔と該シヤフトとの該嵌着部の横断面
形状は接触する円形と多角形であつて、該嵌着
面は相互に部分的に圧接するように形成してあ
ることを特徴とするガイドローラ組立体。 (2) 該圧入孔の横断面形状が多角形で、該圧入孔
の上部の横断面形状が該多角形と相似でやや大
きく形成してあることを特徴とする実用新案登
録請求の範囲(1)に記載のガイドローラ組立体。 (3) 該圧入孔の横断面形状が円形で、該圧入孔の
上部の横断面形状が多角形に形成してあるとと
もに、該圧入孔と該シヤフトとの嵌着部におけ
る該シヤフトの横断面形状が多角形であること
を特徴とする実用新案登録請求の範囲(1)に記載
のガイドローラ組立体。[Scope of Claim for Utility Model Registration] (1) A guide roller is rotatably installed between upper and lower flanges fitted to the shaft, and the cross-sectional shape of the fitting portion between the press-fit hole of the flange and the shaft. 1. A guide roller assembly, characterized in that said circular and polygonal shapes are in contact with each other, and the fitting surfaces are formed so as to partially press against each other. (2) The scope of the utility model registration claim (1) characterized in that the cross-sectional shape of the press-fit hole is polygonal, and the cross-sectional shape of the upper part of the press-fit hole is similar to and slightly larger than the polygon. ) Guide roller assembly as described in ). (3) The cross-sectional shape of the press-fit hole is circular, the cross-sectional shape of the upper part of the press-fit hole is polygonal, and the cross-section of the shaft at the fitting portion between the press-fit hole and the shaft; The guide roller assembly according to claim (1) of the utility model registration, characterized in that the shape is polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986017517U JPH0433568Y2 (en) | 1986-02-12 | 1986-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986017517U JPH0433568Y2 (en) | 1986-02-12 | 1986-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62133242U JPS62133242U (en) | 1987-08-22 |
| JPH0433568Y2 true JPH0433568Y2 (en) | 1992-08-11 |
Family
ID=30810347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986017517U Expired JPH0433568Y2 (en) | 1986-02-12 | 1986-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433568Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007178245A (en) * | 2005-12-27 | 2007-07-12 | Matsushita Electric Works Ltd | Water purifier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236906B2 (en) * | 1974-08-01 | 1977-09-19 | ||
| JPS6113341B2 (en) * | 1977-12-13 | 1986-04-12 | Futaba Denshi Kogyo Kk |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236906U (en) * | 1975-09-08 | 1977-03-16 | ||
| JPS6113341U (en) * | 1984-06-21 | 1986-01-25 | 株式会社リコー | tape guide |
-
1986
- 1986-02-12 JP JP1986017517U patent/JPH0433568Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236906B2 (en) * | 1974-08-01 | 1977-09-19 | ||
| JPS6113341B2 (en) * | 1977-12-13 | 1986-04-12 | Futaba Denshi Kogyo Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62133242U (en) | 1987-08-22 |
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