JPS6310541Y2 - - Google Patents
Info
- Publication number
- JPS6310541Y2 JPS6310541Y2 JP5375281U JP5375281U JPS6310541Y2 JP S6310541 Y2 JPS6310541 Y2 JP S6310541Y2 JP 5375281 U JP5375281 U JP 5375281U JP 5375281 U JP5375281 U JP 5375281U JP S6310541 Y2 JPS6310541 Y2 JP S6310541Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- connecting portion
- diameter
- fitting hole
- flange
- 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 claims description 15
- 229920003002 synthetic resin Polymers 0.000 claims description 14
- 239000000057 synthetic resin Substances 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
【考案の詳細な説明】
本考案は、製作容易に改善したスリツプ機構に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved slip mechanism that is easy to manufacture.
小型のアナログ時計には時刻合わせをおこなう
為に歯車と歯車との間にスリツプ機構が設けら
れ、本出願人は第１図のスリツプ機構を先に提案
した。このスリツプ機構は合成樹脂製歯車２０と
金属製歯車３０とを組み合わせ、合成樹脂製歯車
は大径の円板部２４上に溝部２８と小径連結部２
３と鍔部２２が形成され、金属製歯車には嵌合孔
３２と挿入孔３３とが連通して設けられると共に
前記溝部２８に嵌合するダボ３５と一対の弾性片
３４とが夫々形成されている。しかし、前記溝部
２８は金型成形の折図の水平左右方向に割る金型
方向に対し直角方向であり、溝部を優先して金型
を上下に割ると小径連結部２３の金型成形が面倒
であり、いずれの場合も溝部若しくは小径連結部
の一方を成形後レース加工等の２次加工で形成せ
ざるを得ず、小型部品の２次加工は面倒な欠点が
ある。 A small analog clock is provided with a slip mechanism between gears in order to adjust the time, and the applicant previously proposed the slip mechanism shown in Fig. 1. This slip mechanism combines a synthetic resin gear 20 and a metal gear 30, and the synthetic resin gear has a groove part 28 on a large diameter disk part 24 and a small diameter connecting part 2.
3 and a flange 22 are formed, and the metal gear is provided with a fitting hole 32 and an insertion hole 33 that communicate with each other, and a dowel 35 that fits into the groove 28 and a pair of elastic pieces 34, respectively. ing. However, the groove 28 is perpendicular to the direction of the mold that is divided horizontally and horizontally in the folding diagram for mold forming, and if the mold is divided vertically with priority given to the groove, mold forming of the small diameter connecting portion 23 will be troublesome. In either case, either the groove portion or the small diameter connecting portion must be formed by secondary processing such as lace processing after molding, and the secondary processing of small parts is troublesome.
本考案の目的は、前記欠点に鑑み、合成樹脂製
歯車と金属製歯車に改善を加え、２次加工が不要
で製作容易なスリツプ機構を提案することにあ
る。 The purpose of the present invention is to improve the synthetic resin gear and the metal gear in view of the above-mentioned drawbacks, and to propose a slip mechanism that does not require secondary processing and is easy to manufacture.
以下、図示の実施例で本考案を説明する。スリ
ツプ機構は第２図で合成樹脂製歯車１と金属製歯
車１０の組み合わせで構成されている。 The present invention will be explained below with reference to illustrated embodiments. As shown in FIG. 2, the slip mechanism is composed of a combination of a synthetic resin gear 1 and a metal gear 10.
合成樹脂製歯車１は第３図、第４図のように中
径の鍔部２と、この鍔部に隣設する小径連結部３
と、この小径連結部に隣設して外径寸法がl1の大
径の円板部４と、円板部の下側に形成した歯車５
と、歯車に隣設する軸部６とが一体に成形されて
いる。鍔部から軸部の中心には貫通孔７が穿設さ
れている。貫通孔を鍔部の上面に設けた軸部で置
換えてもよい。 As shown in FIGS. 3 and 4, the synthetic resin gear 1 has a medium-diameter flange 2 and a small-diameter connecting portion 3 adjacent to the flange.
, a large-diameter disk portion 4 with an outer diameter of l 1 adjacent to this small-diameter connecting portion, and a gear 5 formed on the lower side of the disk portion.
and the shaft portion 6 adjacent to the gear are integrally molded. A through hole 7 is bored from the flange to the center of the shaft. The through hole may be replaced with a shaft provided on the upper surface of the collar.
前記金属製歯車１０はバネ性金属材料で形成さ
れ、第５図のように前記円板部４より大径の歯車
１１と、中心に前記連結部３とほゞ同径で前記連
結部が嵌合される嵌合孔１２と、この嵌合孔に連
通し前記鍔部より大きな挿入孔１３と、前記円板
部４に弾性的に圧接する弾性片１４，１４と、中
心から内縁の寸法l2が前記円板部４の外径寸法l1
よりわずかに小さい位置に形成された突起である
ダボ１５とがプレス加工で形成されている。 The metal gear 10 is made of a springy metal material, and as shown in FIG. 5, a gear 11 having a larger diameter than the disk portion 4 and a connecting portion having approximately the same diameter as the connecting portion 3 are fitted in the center. A fitting hole 12 to be fitted, an insertion hole 13 communicating with the fitting hole and larger than the flange, elastic pieces 14, 14 elastically pressed against the disc part 4, and a dimension l from the center to the inner edge. 2 is the outer diameter dimension l 1 of the disk portion 4
A dowel 15, which is a protrusion formed at a slightly smaller position, is formed by press working.
前記ダボ１５の位置は第５図で挿入孔１３を介
在して嵌合孔１２と対峙する位置に形成され、嵌
合孔１２と挿入孔１３の中心を通る略線上に設け
ることが望ましい。 The dowel 15 is desirably formed at a position facing the fitting hole 12 with the insertion hole 13 in between as shown in FIG.
前記合成樹脂製歯車１に金属製歯車１０が組み
合わされるときには、まず挿入孔１３に鍔部２が
挿入され、次に小径連結部３が嵌合孔１２に完全
に入るまで金属製歯車が平行移動される。この組
み合わせで金属製歯車１０は第２図において弾性
片１４，１４で上方に押し上げられ、鍔部２の下
面で抜け止めされ、ダボ１５は円板部４の外縁に
軽く当接されて歯車１１が図示されない歯車と噛
合されて挿入孔１３の外側位置で中心方向に力が
加えられてもダボ１５で移動されずに合成樹脂製
歯車１と金属製歯車１０が相対的に回転可能にな
る。又合成樹脂製歯車１と金属製歯車１０の間に
はＴ＝μFPNのスリツプトルクが生ずる。尚μは
摩擦係数、Ｆは弾性片１４の圧力、Ｐは弾性片の
圧接部１４ａの半径、Ｎは弾性片の数である。 When the metal gear 10 is combined with the synthetic resin gear 1, the flange 2 is first inserted into the insertion hole 13, and then the metal gear is translated in parallel until the small diameter connecting portion 3 is completely inserted into the fitting hole 12. be done. With this combination, the metal gear 10 is pushed upward by the elastic pieces 14, 14 in FIG. is meshed with a gear (not shown), and the synthetic resin gear 1 and the metal gear 10 are made relatively rotatable without being moved by the dowel 15 even if a force is applied toward the center at a position outside the insertion hole 13. Further, a slip torque of T=μFPN is generated between the synthetic resin gear 1 and the metal gear 10. Here, μ is the coefficient of friction, F is the pressure of the elastic piece 14, P is the radius of the pressure contact portion 14a of the elastic piece, and N is the number of the elastic pieces.
スリツプ機構が前記のように構成されると、合
成樹脂製歯車１の成形金型は左右方向の割り型で
成形され、複雑な金型や、２次加工が不要であ
る。 When the slip mechanism is constructed as described above, the mold for forming the synthetic resin gear 1 is formed by split molds in the left and right direction, and a complicated mold or secondary processing is not required.
第６図、第７図はダボ１５に関する他の実施例
で、第６図は挿入孔１３を介在して嵌合孔１２と
対峙する２位置にダボが設けられている。２個の
ダボの間隔は適宜設定される。２個以上設けても
よい。第７図は嵌合孔１２が長孔１６で形成さ
れ、長孔の中心線の略延長線上に他のダボ１７が
設けられている。一方のダボ１５は第５図と同様
に歯車１１の中心と挿入孔１３の中心を通る略線
上に設けることが望ましい。 6 and 7 show other embodiments of the dowels 15. In FIG. 6, dowels are provided at two positions facing the fitting hole 12 with the insertion hole 13 in between. The interval between the two dowels is set appropriately. Two or more may be provided. In FIG. 7, the fitting hole 12 is formed by an elongated hole 16, and another dowel 17 is provided approximately on an extension of the center line of the elongated hole. It is desirable that one dowel 15 be provided on a substantially line passing through the center of the gear 11 and the center of the insertion hole 13, as in FIG.
本考案は前述のように構成されたから、合成樹
脂製歯車は金型成形だけで製作されて製作が容易
である。又、円板部外径と突起で位置決めする為
部品精度が出し易く品質が安定する。さらに組み
立て分解が容易である等の実用上優れた効果を奏
するスリツプ機構が提供できる。 Since the present invention is configured as described above, the synthetic resin gear can be easily manufactured by only molding. In addition, since positioning is performed using the outer diameter of the disc and the protrusions, it is easy to achieve component accuracy and the quality is stable. Furthermore, it is possible to provide a slip mechanism that is easy to assemble and disassemble, and has excellent practical effects.
第１図は出願人が先に提案したスリツプ機構説
明図、第２図は本考案スリツプ機構の断面側面
図、第３図は合成樹脂製歯車の斜視図、第４図は
合成樹脂製歯車の断面側面図、第５図は金属製歯
車の平面図、第６図、第７図は金属製歯車の他の
実施例平面図である。
１……合成樹脂製歯車、２……中径の鍔部、３
……小径連結部、４……大径の円板部、１０……
金属製歯車、１２……嵌合孔、１３……挿入孔、
１４……弾性片、１５，１７……ダボ（突起）。
Figure 1 is an explanatory diagram of the slip mechanism previously proposed by the applicant, Figure 2 is a cross-sectional side view of the slip mechanism of the present invention, Figure 3 is a perspective view of a synthetic resin gear, and Figure 4 is a diagram of a synthetic resin gear. A sectional side view, FIG. 5 is a plan view of the metal gear, and FIGS. 6 and 7 are plan views of other embodiments of the metal gear. 1...Synthetic resin gear, 2...Medium diameter flange, 3
...Small diameter connecting part, 4...Large diameter disc part, 10...
Metal gear, 12...fitting hole, 13...insertion hole,
14...Elastic piece, 15, 17...Dowel (protrusion).
Claims (1)
とこの連結部に隣接する大径の円板部とを一体に
有する合成樹脂製歯車と、中心に前記連結部と
ほゞ同径で前記連結部が嵌合する嵌合孔とこの嵌
合孔に連通し前記鍔部よりも大きな挿入孔と前記
円板部に弾性的に圧接する弾性片とを一体に有す
る金属製歯車と、前記金属製歯車の前記挿入孔を
介在して前記嵌合孔と対峙する位置に形成された
突起とを備え、前記連結部に前記嵌合孔を嵌合さ
せた時前記突起が前記円板部の外縁に当接して成
るスリツプ機構。 A synthetic resin gear integrally having a medium-diameter flange, a small-diameter connecting portion adjacent to the flange, and a large-diameter disk portion adjacent to the connecting portion, and a gear having a diameter approximately the same as the connecting portion at the center. a metal gear integrally having a fitting hole into which the connecting portion fits, an insertion hole communicating with the fitting hole and larger than the flange portion, and an elastic piece that elastically presses against the disk portion; a protrusion formed at a position opposite to the fitting hole through the insertion hole of the metal gear, and when the fitting hole is fitted to the connecting portion, the protrusion engages the disc portion. A slip mechanism that comes into contact with the outer edge of the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5375281U JPS6310541Y2 (en) | 1981-04-16 | 1981-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5375281U JPS6310541Y2 (en) | 1981-04-16 | 1981-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57168078U JPS57168078U (en) | 1982-10-22 |
| JPS6310541Y2 true JPS6310541Y2 (en) | 1988-03-29 |
Family
ID=29850373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5375281U Expired JPS6310541Y2 (en) | 1981-04-16 | 1981-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6310541Y2 (en) |
-
1981
- 1981-04-16 JP JP5375281U patent/JPS6310541Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57168078U (en) | 1982-10-22 |
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