JPH02714Y2 - - Google Patents
Info
- Publication number
- JPH02714Y2 JPH02714Y2 JP1981153329U JP15332981U JPH02714Y2 JP H02714 Y2 JPH02714 Y2 JP H02714Y2 JP 1981153329 U JP1981153329 U JP 1981153329U JP 15332981 U JP15332981 U JP 15332981U JP H02714 Y2 JPH02714 Y2 JP H02714Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- rotating body
- flange portion
- shaft
- guide 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
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
【考案の詳細な説明】
本考案は時計のスリツプ機構に関するものであ
る。[Detailed Description of the Invention] The present invention relates to a slip mechanism for a watch.
従来の時計のスリツプ機構は、第３図イ〜ハに
示すような構成からなつている。第３図イの機構
は、軸１に遊嵌された二番車２をばね座３の弾性
力で軸１に固定したプツシユ４上に押圧し、その
摩擦接触で軸の回転を伝達し、一定以上の回転ト
ルクの負荷を軸１に与えるとスリツプして、二番
車２に対し軸１は独立して回転するようになつて
いる。しかし、この機構では、ばね座３の寸法や
熱処理等の管理を充分に行わないと、弾性力が大
きく変動しバラ付きが生じ、弾性力の大小により
置廻りなど種々の不具合が生ずることになり、ま
た、部品点数が多いので望ましいものではない。
第３図ロおよびハの機構は、歯車２と一体にかつ
対象位置において形成する半径方向に弾力性を有
する一対のリブ３，３により軸１を挾持し、該リ
ブ３，３と軸１との接触面５を円弧状として構成
したもので、一定以上の回転トルクの負荷によつ
て軸１が歯車２に対し空転するようになつてい
る。しかし、この機構では、軸１はリブ３の円弧
状面５と摺接しているため、一対のリブ３の変形
量がバラつき偏心しやすく、また、板ばねである
リブ３を面方向に変形させるため、ばね定数が大
きく、部品のバラつきの影響を受けることにな
る。いずれも、時計の精度を阻害する要因とな
る。 The slip mechanism of a conventional watch has a structure as shown in FIG. 3A to C. The mechanism shown in FIG. 3A uses the elastic force of a spring seat 3 to press a center wheel & pinion 2 loosely fitted onto a shaft 1 onto a pusher 4 fixed to the shaft 1, and through this frictional contact, the rotation of the shaft is transmitted. When a load of rotational torque exceeding a certain level is applied to the shaft 1, the shaft 1 slips, and the shaft 1 rotates independently of the center wheel & pinion 2. However, with this mechanism, if the dimensions and heat treatment of the spring seat 3 are not properly controlled, the elastic force will fluctuate greatly and become uneven, and various problems such as misalignment may occur depending on the magnitude of the elastic force. Also, it is not desirable because it requires a large number of parts.
In the mechanism shown in FIGS. 3B and 3, a shaft 1 is held between a pair of radially elastic ribs 3, 3 formed integrally with a gear 2 and at symmetrical positions, and the ribs 3, 3 and the shaft 1 are The contact surface 5 of the shaft 1 is configured to have an arcuate shape, and the shaft 1 is configured to idle relative to the gear 2 when a rotational torque load of a certain level or more is applied. However, in this mechanism, since the shaft 1 is in sliding contact with the arcuate surface 5 of the rib 3, the amount of deformation of the pair of ribs 3 tends to vary and eccentricity occurs, and the rib 3, which is a leaf spring, is deformed in the plane direction. Therefore, the spring constant is large and is affected by variations in parts. All of these factors impede the accuracy of the clock.
本考案は、上述のような従来の問題を解決する
ためになされたもので、安定したフリクシヨン特
性を得るために、弾性腕を有する歯車の中心の案
内孔に回転体の軸部を遊嵌し、２部品間の偏心を
防止すると共に回転体のフランジ部を歯車の摺接
部と弾性腕の先端に設けた折曲された端部とで軸
方向に挾持してフリクシヨンを構成するようにし
た時計のスリツプ機構を提供するものである。 The present invention was made to solve the conventional problems as described above, and in order to obtain stable friction characteristics, the shaft of a rotating body is loosely fitted into a guide hole at the center of a gear having an elastic arm. In addition to preventing eccentricity between the two parts, the flange part of the rotating body is held in the axial direction by the sliding part of the gear and the bent end provided at the tip of the elastic arm to form a friction. It provides a slip mechanism for watches.
以下、本考案の実施例を図面と共に説明する。
まず、第１図、第２図においては、１は金属また
は合成樹脂からなる回転体であつて、軸部２と小
径軸部３とその中間に一体に設けた大径のフラン
ジ部４とを有している。軸部２の周辺のフランジ
部４は環状の突条部５が形成され、その反対面の
フランジ部４の周縁は環状の段部６が形成されて
いる。また軸部２の自由端には歯車８が穿設され
ている。回転体１と組合わされる歯車９には、回
転体１の軸部２を遊嵌する案内孔１０がその中心
に設けられ、案内孔１０を取囲み、回転体の軸部
側のフランジ部に摺接する摺接部１１が設けら
れ、かつ歯車９の中心と周縁との間を打抜くこと
により、外周から内方に延び、かつその先端に端
部１２ａ，１２ａを有する略弧状の弾性腕１２，
１２が形成されている。前記端部１２ａは、上記
フランジ部４よりも外側から軸方向かつ作用側に
折曲されている。このように構成された回転体１
と歯車９とは、図に示すように、回転体１の軸部
２を歯車９の案内孔１０に嵌合して回転体１のフ
ランジ部４を歯車９の摺接部１１に当接し、そし
て、前記弾性腕１２，１２を変形させて、弾性腕
１２の端部１２ａが位置する附近まで延在してい
る回転体１のフランジ部４の摺接部と当接してい
る側とは反対側の面にある段部６に、フランジ部
４を乗り越して当接する。これによつて、回転体
１のフランジ部４は、歯車９の弾性腕１２の軸方
向の弾性力によつて、歯車９の摺接部上に挾持さ
れ、一方に一定以上の回転トルクが負荷されたと
きスリツプを生ずるフリクシヨンが構成される。 Embodiments of the present invention will be described below with reference to the drawings.
First, in FIGS. 1 and 2, 1 is a rotating body made of metal or synthetic resin, which includes a shaft portion 2, a small-diameter shaft portion 3, and a large-diameter flange portion 4 integrally provided in the middle thereof. have. An annular protrusion 5 is formed on the flange portion 4 around the shaft portion 2, and an annular step portion 6 is formed on the periphery of the flange portion 4 on the opposite side. Further, a gear 8 is bored in the free end of the shaft portion 2. A gear 9 to be combined with the rotating body 1 is provided with a guide hole 10 in the center of which the shaft 2 of the rotating body 1 is loosely fitted, and a flange surrounding the guide hole 10 on the shaft side of the rotating body. A substantially arc-shaped elastic arm 12 is provided with a sliding contact portion 11 for sliding contact, and is punched out between the center and the peripheral edge of the gear 9 to extend inward from the outer periphery and have end portions 12a, 12a at the tip thereof. ，
12 are formed. The end portion 12a is bent from the outside of the flange portion 4 in the axial direction and toward the action side. Rotating body 1 configured in this way
and the gear 9, as shown in the figure, the shaft part 2 of the rotating body 1 is fitted into the guide hole 10 of the gear 9, the flange part 4 of the rotating body 1 is brought into contact with the sliding part 11 of the gear 9, Then, the elastic arms 12, 12 are deformed so that the end portion 12a of the elastic arm 12 extends to the vicinity where the end portion 12a of the rotating body 1 is located, and the side that is in contact with the sliding portion of the flange portion 4 of the rotating body 1 is opposite to the side that is in contact with the sliding portion of the flange portion 4. It abuts against the step part 6 on the side surface, passing over the flange part 4. As a result, the flange portion 4 of the rotating body 1 is clamped on the sliding contact portion of the gear 9 by the elastic force in the axial direction of the elastic arm 12 of the gear 9, and a rotation torque of a certain level or more is applied to one side. A friction is created which causes a slip when the slip occurs.
本考案は上記のような回転体と歯車とで構成し
たものであるから、次の効果を生ずるものであ
る。 Since the present invention is composed of the rotating body and gears as described above, it produces the following effects.
(1) 弾性力を歯車と一体に設けた弾性腕の撓みに
より得ているので、ばね性のバラつきが小であ
る。(1) Since the elastic force is obtained by the flexure of the elastic arm that is integrated with the gear, there is little variation in spring properties.
(2) 回転体を摺接部に囲まれた案内孔に嵌合した
ので偏心しにくい。(2) Since the rotating body is fitted into a guide hole surrounded by sliding parts, eccentricity is less likely to occur.
(3) 弾性腕をその歯車の厚み方向に撓ませている
ので、ばね定数が小さくでき、寸法バラつきの
影響をあまり受けない。(3) Since the elastic arm is bent in the thickness direction of the gear, the spring constant can be reduced and it is not affected much by dimensional variations.
(4) 歯車の軸方向の位置を回転体のフランジ部の
広い面で受けているので、組込後の面振れが少
ない。(4) Since the axial position of the gear is supported by the wide surface of the flange of the rotating body, there is little surface runout after assembly.
(5) 部品点数を２点に減少させることができた。(5) The number of parts could be reduced to two.
(6) 弾性腕は、外周より内方に延び、かつその先
端に前記フランジ部よりも外側から軸方向かつ
作用側に折曲された端部を有しているから、歯
車の摺接部と前記折曲された端部とにより前記
回転体のフランジ部を押圧する力の方向は軸方
向だけとなり、軸方向に確実に挟持でき、前記
回転体と前記歯車のたおれやセンターずれをな
くすことができる。また、回転体のフランジ部
を歯車の摺接部と前記端部とにより軸方向に挟
持する力の方向も軸方向だけなので、左右両回
転のどちら側の回転に対しても、一定以上の回
転トルクに対して確実にスリツプさせることが
できる。(6) The elastic arm extends inward from the outer periphery and has an end bent at its tip from outside the flange portion in the axial direction and toward the action side, so it does not connect to the sliding contact portion of the gear. The direction of the force that presses the flange portion of the rotary body by the bent end portion is only in the axial direction, so that it can be securely clamped in the axial direction, and it is possible to prevent the rotary body and the gear from collapsing or misaligning. can. In addition, since the direction of the force that holds the flange portion of the rotating body in the axial direction between the sliding contact portion of the gear and the end portion is only in the axial direction, rotations exceeding a certain level can be applied to both left and right rotations. It is possible to reliably slip against torque.
(7) 更に、弾性腕は、外周より内方に延び、かつ
その先端に前記フランジ部よりも外側から軸方
向かつ作用側に折曲された端部を有しているの
で、組立時においても、前記弾性腕の端部は、
前記フランジ部に対して、ラジアル方向に弾性
変形しながらスムーズに乗り越すことができる
ので、組立後、前記フランジ部を挟持するため
に必要な軸方向の弾性力、即ち、前記弾性腕の
ばね特性には、何ら影響を与えることなく組立
てることができる。(7) Furthermore, since the elastic arm extends inward from the outer periphery and has an end portion at its tip that is bent from outside the flange portion in the axial direction and toward the action side, even during assembly. , the end of the elastic arm is
Since it is possible to smoothly ride over the flange part while being elastically deformed in the radial direction, after assembly, the elastic force in the axial direction necessary for holding the flange part, that is, the spring characteristics of the elastic arm can be assembled without any impact.
第１図は本考案の平面図、第２図は第１図−
線に沿う断面図、第３図イ，ロ，ハは従来のス
リツプ機構の説明図である。
１〜回転体、２〜軸部、４〜フランジ部、９〜
歯車、１０〜案内孔、１１〜摺接部、１２〜弾性
腕。
Figure 1 is a plan view of the present invention, Figure 2 is Figure 1-
The sectional views taken along the line in FIGS. 3A, 3B, and 3C are explanatory views of the conventional slip mechanism. 1 - rotating body, 2 - shaft part, 4 - flange part, 9 -
Gear, 10 - Guide hole, 11 - Sliding contact part, 12 - Elastic arm.
Claims (1)
とを有する回転体と、 前記回転体の軸部を遊嵌する案内孔を中心に有
し、該案内孔を取囲み前記軸部側のフランジ部に
摺接する摺接部と、前記フランジ部の前記摺接部
と摺接する側とは反対側の面に当接するための外
周より内方に延び、かつその先端に前記フランジ
部よりも外側から軸方向かつ作用側に折曲されて
前記フランジ部を軸方向に押圧する端部を有する
複数の弾性腕とを一体に有してなる歯車とからな
り、 前記回転体の軸部を前記歯車の案内孔に嵌合
し、かつ前記回転体のフランジ部を、前記歯車の
摺接部と、前記歯車に設けられた前記弾性腕の折
曲された端部とによつて挟持したことを特徴とす
る時計のスリツプ機構。[Claims for Utility Model Registration] A rotating body having a shaft portion and a large-diameter flange portion provided integrally with the shaft portion, and having a guide hole in the center into which the shaft portion of the rotary body is loosely fitted; a sliding contact portion surrounding the guide hole and slidingly contacting the flange portion on the shaft portion side; and extending inward from the outer periphery for contacting a surface of the flange portion on the opposite side to the side slidingly contacting the sliding contact portion; and a gear integrally having a plurality of elastic arms having ends thereof bent in the axial direction and the action side from the outside of the flange portion to press the flange portion in the axial direction. , fitting the shaft portion of the rotating body into the guide hole of the gear, and connecting the flange portion of the rotating body to the sliding contact portion of the gear and the bent end of the elastic arm provided on the gear. A slip mechanism for a watch characterized by being held between two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15332981U JPS5857988U (en) | 1981-10-15 | 1981-10-15 | watch slip mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15332981U JPS5857988U (en) | 1981-10-15 | 1981-10-15 | watch slip mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5857988U JPS5857988U (en) | 1983-04-19 |
| JPH02714Y2 true JPH02714Y2 (en) | 1990-01-09 |
Family
ID=29945948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15332981U Granted JPS5857988U (en) | 1981-10-15 | 1981-10-15 | watch slip mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5857988U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5526861U (en) * | 1978-08-10 | 1980-02-21 |
-
1981
- 1981-10-15 JP JP15332981U patent/JPS5857988U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5526861U (en) * | 1978-08-10 | 1980-02-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5857988U (en) | 1983-04-19 |
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