JPH0452524Y2 - - Google Patents
Info
- Publication number
- JPH0452524Y2 JPH0452524Y2 JP1987130666U JP13066687U JPH0452524Y2 JP H0452524 Y2 JPH0452524 Y2 JP H0452524Y2 JP 1987130666 U JP1987130666 U JP 1987130666U JP 13066687 U JP13066687 U JP 13066687U JP H0452524 Y2 JPH0452524 Y2 JP H0452524Y2
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- press
- fitting
- tip
- shaft
- 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
- 238000004804 winding Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
- F16D1/0858—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to the elasticity of the hub (including shrink fits)
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
- Pulleys (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、プレス加工により成形されるプー
リに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a pulley formed by press working.
従来、この種のプーリは、たとえば自動車用エ
ンジンの水ポンプ軸駆動用として使用されてい
る。第６図は従来のプーリ１を水ポンプの軸４に
組み付けた状態を示し、プーリ１は中央部が開口
した円環状のプーリ本体部２の外周側に、複数条
のＶベルト溝３ａをもつベルト巻回部３が軸方向
に折曲成形されたプレス成形品であり、軸４にプ
ーリシート５を圧入嵌合して固定した後にプーリ
１を挿入し、ボルト６をプーリシート５に締着す
ることによつて組み付けるようになつている。
Conventionally, this type of pulley has been used, for example, to drive a water pump shaft of an automobile engine. Fig. 6 shows a state in which a conventional pulley 1 is assembled to the shaft 4 of a water pump. The belt winding part 3 is a press-formed product that is bent in the axial direction, and after the pulley seat 5 is press-fitted and fixed on the shaft 4, the pulley 1 is inserted and the bolt 6 is tightened to the pulley seat 5. It is designed to be assembled by doing this.
上記のように、従来のプーリはプーリシートを
介してボルト締めにより軸に組み付ける構造であ
るため、部品点数が多く、組付作業にも手間がか
かり、コスト高のものになつている。
As described above, the conventional pulley has a structure that is assembled to the shaft by tightening bolts through the pulley seat, so the number of parts is large, the assembly work is time-consuming, and the cost is high.
そこで、プーリシートを用いないで軸に直接組
み付けることができるプーリとして、軸に圧入嵌
合するための圧入部をプーリ本体部の内周側に折
曲成形したプーリの実用化が望まれている。しか
し、このプーリの折曲成形された圧入部は先端部
分の剛性が小さく、軸に圧入されたときのはめあ
い面の面圧が先端部分では小さくなるため、プー
リの使用中にプーリの圧入部と軸との間でスリツ
プが生じ、十分なトルク伝達効率が得られないと
いう難点がある。このため、プーリの圧入部のは
めあいを大きなしめしろをもつしまりばめにする
か、あるいは圧入部のはめあい面を先端部分に向
かつて縮径するテーパ面にすることによつてはめ
あい面圧を大きくしなければならず、このように
すると圧入部の先端部分とは反対側のプーリ本体
部に連接する角隅部分における応力が大きくなる
ため、強度上の問題が生ずることになり、これら
の問題が圧入形プーリの実用化を妨げる原因とな
つている。 Therefore, it is desired to put into practical use a pulley that can be assembled directly onto a shaft without using a pulley seat, in which a press-fit part for press-fitting onto the shaft is bent and formed on the inner circumference of the pulley body. . However, the bend-formed press-fit part of this pulley has low rigidity at the tip, and the contact pressure on the fitting surface when it is press-fitted onto the shaft is small at the tip. The problem is that slippage occurs between the shaft and the shaft, making it impossible to obtain sufficient torque transmission efficiency. For this reason, the pressure on the fitting surface can be increased by making the fit of the press-fit part of the pulley an interference fit with a large interference, or by making the fit surface of the press-fit part a tapered surface that decreases in diameter toward the tip. If you do this, stress will increase at the corner part that connects to the pulley body on the opposite side from the tip of the press-fit part, which will cause strength problems. This is a cause that hinders the practical application of press-fit type pulleys.
この考案は上記の問題を解決して、圧入部のし
めしろを大きくすることなく、必要なはめあい面
圧が得られるプーリを提供することを目的とす
る。 The purpose of this invention is to solve the above problems and provide a pulley that can obtain the necessary fitting surface pressure without increasing the interference of the press-fit portion.
この考案のプーリは、プレス加工によりプーリ
本体部の外周側と内周側とに、それぞれベルト巻
回部と圧入部とが同一軸方向に折曲成形されてお
り、このプーリの圧入部の先端部分に外径側に折
曲成形された折曲部を設けている。
In the pulley of this invention, a belt winding part and a press-fitting part are bent in the same axial direction on the outer circumferential side and inner circumferential side of the pulley body, respectively, by press working, and the tip of the press-fitting part of the pulley is bent. A bent portion is provided on the outer diameter side.
この考案のプーリは、圧入部の先端部分が外径
側に折曲成形された折曲部によつて補強されてい
るため、圧入部のしめしろを大きくしなくても、
先端部分のはめあい面の面圧が大きくなり、圧入
部がプーリ本体部に連接する角隅部分の応力が軽
減される。
In the pulley of this invention, the tip of the press-fitting part is reinforced by a bent part formed on the outer diameter side, so it can be used without increasing the interference of the press-fitting part.
The surface pressure on the fitting surface of the tip portion increases, and the stress at the corner portion where the press-fit portion connects to the pulley body portion is reduced.
以下、この考案の実施例について図面を参照し
て説明する。
Hereinafter, embodiments of this invention will be described with reference to the drawings.
第１図はこの考案のプーリを軸に組み付けた状
態で示す上半部縦断側面図である。 FIG. 1 is a longitudinal cross-sectional side view of the upper half of the pulley of this invention, shown assembled on a shaft.
プーリ１０は、円環条のプーリ本体部１１の外
周側と内周側とに、それぞれベルト巻回部１２と
圧入部１３とをプレス加工により同一軸方向に折
曲成形したものであり、軸２０に圧入部１３が圧
入嵌合されており、ベルト巻回部１２の外周面に
設けられた複数条のＶベルト溝１２ａと図示しな
い動力軸との間にＶベルトを巻回して駆動するよ
うになつている。 The pulley 10 is formed by bending a belt winding part 12 and a press-fitting part 13 in the same axial direction by press working on the outer circumferential side and the inner circumferential side of a pulley main body part 11 in the form of an annular strip, respectively. A press-fitting part 13 is press-fitted into the belt winding part 12, and the V-belt is wound between a plurality of V-belt grooves 12a provided on the outer peripheral surface of the belt winding part 12 and a power shaft (not shown) to drive the belt. It's getting old.
上記プーリ１０の圧入部１３の先端部分には、
半径方向外側に折曲成形されたフランジ状の折曲
成形されたフランジ状の折曲部１４が設けてあ
る。 At the tip of the press-fitting part 13 of the pulley 10,
A flange-like bent portion 14 is provided which is bent outward in the radial direction.
上記のように構成されたプーリ１０は、圧入部
１３の先端部分がフランジ状の折曲部１４によつ
て補強されて剛性が大きくなつているため、圧入
部１３のはめあい面の面圧分布は、同図に示すよ
うに先端部分の面圧P1がプーリ本体部１１に連
接する角隅部分１５の面圧P2とほぼ同等の大き
さとなり、全体として必要かつ十分なはめあい面
圧が得られることになる。したがつて、必要なは
めあい面圧を得るために圧入部１３のしめしろを
大きくする必要がなくなるから、角隅部分１５に
大きな応力が生ずることはない。 In the pulley 10 configured as described above, the tip part of the press-fitting part 13 is reinforced by the flange-like bent part 14 and has increased rigidity, so the surface pressure distribution on the fitting surface of the press-fitting part 13 is , as shown in the figure, the surface pressure P 1 at the tip portion is approximately equal to the surface pressure P 2 at the corner portion 15 connected to the pulley main body 11, and the necessary and sufficient fitting surface pressure is obtained as a whole. It will be done. Therefore, it is no longer necessary to increase the interference of the press-fit portion 13 in order to obtain the necessary fitting surface pressure, so that no large stress is generated in the corner portion 15.
第２図は、比較例として圧入部１３の先端部分
に第１図のような折曲部１４を設けないプーリ１
０ａについて、圧入部１３のはめあい面における
面圧を示したものであり、角隅部分１５の面圧
P2に比べて先端部分の面圧P1が著しく小さくな
つている。 FIG. 2 shows, as a comparative example, a pulley 1 in which the bending part 14 as shown in FIG. 1 is not provided at the tip of the press-fitting part 13.
Regarding 0a, the surface pressure on the fitting surface of the press-fit portion 13 is shown, and the surface pressure on the corner portion 15 is
The surface pressure P 1 at the tip is significantly smaller than P 2 .
第３図および第４図は、それぞれこの考案の他
の実施例を示す上半部縦断側面図であり、第１図
と同一構成部分につていては同一符号で示してあ
る。 3 and 4 are longitudinal cross-sectional side views of the upper half of another embodiment of this invention, and the same components as in FIG. 1 are designated by the same reference numerals.
第３図のプーリ１０は、圧入部１３の先端部分
に、プーリ本体部１１側に折り返して重ね合わせ
た折曲部１４を設けている。 The pulley 10 shown in FIG. 3 is provided with a bent portion 14 at the tip end of the press-fit portion 13, which is folded back toward the pulley main body 11 and overlapped.
第４図のプーリ１０は、圧入部１３の先端部分
に、第３図と同様にプーリ本体部１１側に折り返
した重ね合わせ部１４ａと重ね合わせ部１４ａの
先端をさらに半径方向外側に折曲したフランジ部
１４ｂとからなる折曲部１４を設けている。 The pulley 10 in FIG. 4 has an overlapping portion 14a folded back toward the pulley main body 11 side in the same way as in FIG. 3, and the tip of the overlapping portion 14a is further bent radially outward. A bent portion 14 consisting of a flange portion 14b is provided.
上記の第３図および第４図のように構成する
と、圧入部１３の先端部分の剛性が第１図の場合
よりも高くなり、先端部分のはめあい面圧をさら
に大きくすることができる。 When configured as shown in FIGS. 3 and 4 above, the rigidity of the tip portion of the press-fitting portion 13 is higher than that in FIG. 1, and the fitting surface pressure of the tip portion can be further increased.
圧入部１３に設ける折曲部１４の形状について
は、前記各実施例に限定されるものではなく、必
要に応じ任意の形状のものに成形することができ
る。 The shape of the bending part 14 provided in the press-fitting part 13 is not limited to the above embodiments, and can be formed into any shape as required.
第５図は、この考案のさらに他の実施例につい
て軸に組み付けた状態で示す上半部縦断側面図で
ある。 FIG. 5 is a longitudinal cross-sectional side view of the upper half of still another embodiment of this invention, shown assembled on a shaft.
この実施例では、圧入部１３の先端部分に第１
図と同様のフランジ状の折曲部１４を設けるとと
もに、圧入部１３のほぼ中央部分に半径方向外側
に隆起するビード１６を円周方向に連続状に、あ
るいは間隔をおいて不連続状に設けている。 In this embodiment, a first
A flange-like bent portion 14 similar to that shown in the figure is provided, and a bead 16 that protrudes radially outward is provided at approximately the center of the press-fit portion 13 in a continuous manner in the circumferential direction or in a discontinuous manner at intervals. ing.
この実施例によると、圧入部１３の先端部分だ
けでなく、中央部分についても剛性を高くするこ
とができる。 According to this embodiment, not only the tip portion of the press-fitting portion 13 but also the center portion can have high rigidity.
前記各実施例のプーリは、ベルト巻回部に複数
条のＶベルト溝を設けたものを図示したが、ベル
ト巻回部の形式については前記実施例に限らず、
Ｖベルト溝が一条のプーリ、あるいは平ベルトを
用いるプーリについてもこの考案を適用すること
ができる。 Although the pulleys of each of the above embodiments are illustrated as having a plurality of V-belt grooves in the belt winding part, the type of the belt winding part is not limited to the above embodiments.
This invention can also be applied to a pulley with a single V-belt groove or a pulley using a flat belt.
なお、プーリの圧入部については、円筒状のも
ののほか、角筒状のものにこの考案を適用しても
よく、このように角筒状の圧入部にこの考案を適
用してはめあい面の面圧を大きくすることによ
り、プーリが軸方向に抜け出すのを防止すること
ができる。 Regarding the press-fitting part of the pulley, this invention may be applied to not only the cylindrical one but also the rectangular cylindrical part.In this way, this invention can be applied to the square cylindrical press-fitting part to improve the fit surface. By increasing the pressure, it is possible to prevent the pulley from slipping out in the axial direction.
以上説明したように、この考案のプーリは、圧
入部の先端部分が外径側に折曲成形された折曲部
により補強されて十分な剛性を有しているから、
圧入部のしめしろしを大きくしなくても必要とす
るはめあい面圧が得られるだけでなく、圧入部が
プーリ本体部に連接する角隅部分の応力が軽減さ
れ、圧入部を設けたプーリの課題とされていた強
度上の問題が解決されることになる。
As explained above, the pulley of this invention has sufficient rigidity because the tip of the press-fitting part is reinforced by the bent part formed by bending on the outer diameter side.
Not only can the required fitting surface pressure be obtained without increasing the interference of the press-fit part, but also the stress at the corners where the press-fit part connects to the pulley body is reduced, and the pulley with the press-fit part This will solve the strength problem that had been an issue.
また、この考案によれば、プーリシートを用い
ることなく、プーリを軸に圧入嵌合して直接組み
付けることが可能となり、従来のプーリに比べて
部品点数が少なく、組付作業性が改善されるか
ら、安価なコストのプーリが得られる。 Additionally, according to this invention, it is possible to directly assemble the pulley by press-fitting it onto the shaft without using a pulley seat, which reduces the number of parts compared to conventional pulleys and improves assembly work efficiency. From this, an inexpensive pulley can be obtained.
第１図はこの考案のプーリを軸に組み付けた状
態とそのはめあい面圧分布とを示す上半部縦断側
面図、第２図は比較例のプーリの組み付け状態と
はめあい面圧分布とを示す上半部縦断側面図、第
３図ないし第５図は、それぞれこの考案の他のプ
ーリを軸に組み付けた状態で示す上半部縦断側面
図、第６図は従来のプーリとその組み付け状態と
を示す上半部縦断側面図である。
図中、１０はプーリ、１１はプーリ本体部、１
２はベルト巻回部、１３は圧入部、１４は折曲
部、２０は軸である。
Fig. 1 is a vertical cross-sectional side view of the upper half of the pulley of this invention showing the assembled state on the shaft and the fitting surface pressure distribution, and Fig. 2 shows the assembled state of the pulley of the comparative example and the fitting surface pressure distribution. 3 to 5 are a vertical sectional side view of the upper half of the pulley of this invention in a state assembled on the shaft, and FIG. 6 is a vertical sectional side view of the conventional pulley and its assembled state. FIG. In the figure, 10 is a pulley, 11 is a pulley main body, 1
2 is a belt winding part, 13 is a press-fitting part, 14 is a bending part, and 20 is a shaft.
Claims (1)
ベルトが巻回されるベルト巻回部と軸に圧入嵌合
される圧入部とがそれぞれプレス加工により同一
軸方向に折曲成形されたプーリであつて、前記プ
ーリの圧入部の先端部分に、外径側に折曲成形さ
れた折曲部を設けたことを特徴とするプーリ。 On the outer circumferential side and inner circumferential side of the annular pulley body,
A pulley in which a belt winding part around which the belt is wound and a press-fitting part which is press-fitted to the shaft are respectively bent in the same axial direction by press working, and the tip of the press-fitting part of the pulley has a A pulley characterized by having a bent part formed by bending on the outer diameter side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987130666U JPH0452524Y2 (en) | 1987-08-27 | 1987-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987130666U JPH0452524Y2 (en) | 1987-08-27 | 1987-08-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6435247U JPS6435247U (en) | 1989-03-03 |
| JPH0452524Y2 true JPH0452524Y2 (en) | 1992-12-10 |
Family
ID=31386039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987130666U Expired JPH0452524Y2 (en) | 1987-08-27 | 1987-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452524Y2 (en) |
-
1987
- 1987-08-27 JP JP1987130666U patent/JPH0452524Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6435247U (en) | 1989-03-03 |
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