JP2013088179A - Antishock bearing mechanism of balance, balance provided with the antishock mechanism, and watch provided with the same - Google Patents

Antishock bearing mechanism of balance, balance provided with the antishock mechanism, and watch provided with the same Download PDF

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JP2013088179A
JP2013088179A JP2011226910A JP2011226910A JP2013088179A JP 2013088179 A JP2013088179 A JP 2013088179A JP 2011226910 A JP2011226910 A JP 2011226910A JP 2011226910 A JP2011226910 A JP 2011226910A JP 2013088179 A JP2013088179 A JP 2013088179A
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balance
stone
vibration
bearing mechanism
proof
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Natsuo Miyoshi
夏生 三好
Yuichi Mori
裕一 森
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Seiko Instruments Inc
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Seiko Instruments Inc
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Priority to JP2011226910A priority Critical patent/JP2013088179A/en
Priority to CH19142012A priority patent/CH705583A2/en
Priority to CN 201210389965 priority patent/CN103048912A/en
Publication of JP2013088179A publication Critical patent/JP2013088179A/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings
    • G04B31/04—Shock-damping bearings with jewel hole and cap jewel

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Vibration Prevention Devices (AREA)
  • Springs (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an antishock bearing mechanism capable of minimizing the fluctuation of the operation of a balance due to the fluctuation of a supporting state of a balance staff, a balance provided with the antishock bearing mechanism, and a watch provided with the same.SOLUTION: An antishock bearing mechanism 1 of a balance 3 of a watch 2 includes: a jewel 10 working as a thrust bearing; and a jewel-jewel frame integrated structure 9 provided with a jewel 17 working as a journal bearing and a jewel frame part 20 integral with the jewel part; an antishock seat body 30 supporting the jewel-jewel frame integrated structure 9 and provided with an engagement part at a large diameter opening end side; and a pressure spring 37 which is supported by the engagement part of the antishock seat body 30 at the outer periphery side and elastically presses and holds the jewel to the jewel-jewel integrated structure 9 at the inner periphery side, and is constituted of a convex plane curved in such a manner that a front face 11, opposed to an 45 edge face of a shaft 40 supported by the antishock bearing mechanism 1 among the jewels 10 and contacting the edge face of the shaft, is projected to the outside. The convex plane 11 of the jewel 10 is constituted of a part of spherical face.

Description

本発明はてんぷの耐振軸受機構、これを備えたてんぷ及びこれを備えた時計に係る。   The present invention relates to a vibration-proof bearing mechanism for a balance, a balance equipped with the balance, and a timepiece equipped with the balance.

時計の使用者の手首の急激な動き等により手首にはめられた時計のてんぷに加わる軸方向（てん真の延在方向に平行な方向）ないし横方向（てん真の延在方向に対して直角な方向）の衝撃が緩和されるように、てん真の両端のほぞ部は耐振軸受機構で支持されている。この種の耐振軸受機構として、受石と、穴石と、受穴石を支える穴石枠と、該穴石枠を支える耐振座体と、耐振座体と穴石枠との間において受石を穴石枠に押付ける押さえばねとを有する耐振軸受機構は、知られている（特許文献１や特許文献２）。   Axial direction (direction parallel to the true extension direction) or lateral direction (perpendicular to the true extension direction) applied to the balance of the watch fitted to the wrist due to a sudden movement of the wrist of the watch user. The tenons at both ends of the balance are supported by vibration-proof bearing mechanisms so that the impact in the right direction is reduced. As this type of vibration-proof bearing mechanism, a stone receiving stone, a hole stone, a hole stone frame that supports the hole stone, a vibration-resistant seat body that supports the hole stone frame, and a stone receiving stone between the vibration-resistant seat body and the hole stone frame. A vibration-proof bearing mechanism having a presser spring that presses against a hole stone frame is known (Patent Document 1 and Patent Document 2).

より詳しくは、この種の耐振軸受機構１０１は、例えば、図１０並びに図１１の（ａ）及び（ｂ）に示したような構造であって、スラスト軸受として働く受石１１０と、ジャーナル軸受として働く穴石１１７と、筒状部１２１及びその開口端１２１ａ側の拡径部１２２を備え拡径部１２２において受石１１０を支えると共に筒状部１２１内で穴石１１７を支える穴石枠１２０と、該穴石枠１２０を支える耐振座体１３０と、耐振座体１３０と穴石枠１２０との間に配置されて受石１１０を穴石枠１２０の筒状部１２１の開口端部１２１ａに押付ける耐振押さえばね１３７とを有する。   More specifically, this type of vibration-resistant bearing mechanism 101 has, for example, a structure as shown in FIGS. 10 and 11 (a) and 11 (b), and a stone 110 that functions as a thrust bearing, and a journal bearing. A working hole stone 117, a cylindrical portion 121, and an enlarged diameter portion 122 on the opening end 121 a side thereof, and the stone diameter 120 that supports the stone 110 in the cylindrical portion 121 while supporting the stone 110 in the enlarged diameter portion 122, The vibration-resistant seat body 130 that supports the hole stone frame 120 and the vibration-receiving seat body 130 that is disposed between the hole stone frame 120 and the stone holder 110 are pressed against the opening end 121 a of the cylindrical portion 121 of the hole stone frame 120. And an anti-vibration spring 137 to be attached.

より詳しくは、真鍮やステンレス鋼の如き金属製の耐振座体１３０は、内周側に傾斜面部１３５ａ，１３５ｂを有する。この傾斜面部１３５ａ，１３５ｂは、全体として一つの仮想円錐台の周面を形成し、例えば、傾斜面部１３５ａ，１３５ｂの部分は図１０の断面で見た場合概ね一列に並んでいる。また、真鍮やステンレス鋼の如き金属製の穴石枠１２０も、外周面に傾斜面部１２６ａ，１２６ｂを有する。この傾斜面部１２６ａ，１２６ｂも、傾斜面部１３５ａ，１３５ｂと同様に、全体として一つの仮想円錐台の周面を形成し、例えば、傾斜面部１２６ａ，１２６ｂの部分は図１０の断面で見た場合概ね一列に並んでいる。穴石枠１２０を耐振座体１３０の所定位置に配置した状態では、穴石枠１２０の傾斜面部１２６ａ，１２６ｂが耐振座体１３０の傾斜面部１３５ａ，１３５ｂに丁度当接する。   More specifically, the vibration-proof seat body 130 made of metal such as brass or stainless steel has inclined surface portions 135a and 135b on the inner peripheral side. The inclined surface portions 135a and 135b form a peripheral surface of one virtual truncated cone as a whole. For example, the inclined surface portions 135a and 135b are arranged in a line when viewed in the cross section of FIG. The perforated frame 120 made of metal such as brass or stainless steel also has inclined surface portions 126a and 126b on the outer peripheral surface. The inclined surface portions 126a and 126b also form a peripheral surface of one virtual truncated cone as a whole in the same manner as the inclined surface portions 135a and 135b. For example, the inclined surface portions 126a and 126b are generally viewed in the cross section of FIG. It is in a line. In a state where the hole stone frame 120 is disposed at a predetermined position of the vibration-proof seat body 130, the inclined surface portions 126a and 126b of the hole stone frame 120 just abut on the inclined surface portions 135a and 135b of the vibration-resistant seat body 130.

耐振座体１３０は、耐振押さえばね１３７や耐振受石１１０や耐振穴石枠１２０などの部品全体を保持する。より詳しくは、耐振押さえばね１３７が耐振受石１１０及び耐振穴石枠１２０を保持しててんぷ１０３への衝撃力を吸収し、衝撃を受けた際の受石１１０及び穴石枠１２０の移動（変位）及び元の位置の方への復元を助ける。耐振受石１１０は、てんぷ１０３のてん真１４０の中心軸線Ｃの延在方向（軸方向）Ａ１，Ａ２の力に抗しててん真１４０を支える。   The anti-vibration seat body 130 holds the entire components such as the anti-vibration holding spring 137, the anti-vibration stone 110, and the anti-vibration hole stone frame 120. More specifically, the vibration-resistant presser spring 137 holds the vibration-resistant receiving stone 110 and the vibration-resistant hole stone frame 120 to absorb the impact force to the balance 103, and the movement of the stone receiving stone 110 and the hole stone frame 120 when the shock is received ( Displacement) and help restore to the original position. The anti-vibration stone 110 supports the balance stem 140 against the forces in the extending directions (axial directions) A1 and A2 of the central axis C of the balance stem 140 of the balance 103.

耐振穴石枠１２０は、押さえばね１３７によって、傾斜面部１２６ａ，１２６ｂにおいて耐振座体１３０の傾斜面部１３５ａ，１３５ｂに弾性的に押付けられ衝撃等を受けた際には耐振座体に対して摺動する。このとき、金属製の耐振枠体１３０の傾斜面部１３５ａ，１３５ｂに対して金属製の耐振穴石枠１２０が傾斜面部１２６ａ，１２６ｂで相対変位され、例えばＢ方向の衝撃に伴う外力がなくなると、抑えばね１３７のばね力により概ねもとの位置に戻る。   The rock-resistant hole stone frame 120 slides against the vibration-resistant seat body when it is elastically pressed against the inclined surface portions 135a and 135b of the vibration-resistant seat body 130 by the presser spring 137 on the inclined surface portions 126a and 126b. To do. At this time, when the metal vibration-resistant hole stone frame 120 is relatively displaced by the inclined surface portions 126a and 126b with respect to the inclined surface portions 135a and 135b of the metal vibration-resistant frame body 130, for example, when there is no external force due to an impact in the B direction, The spring returns to its original position by the spring force of the holding spring 137.

但し、耐振座体１３０と耐振穴石枠１２０との傾斜面部１３５ａ，１２６ａおよび１３５ｂ，１２６ｂにおける変位は金属間の接触面に沿った変位（摺動）であるから、摩擦抵抗が大きいために、衝撃を受けた耐振座体が元の位置に確実には戻り難い。その結果、穴石１１７が中心からずれててんぷ１０３の回転中心軸線が中心からずれたままになる虞れがある。しかも、耐振座体１３０の傾斜面部１３５ａの傾斜角度及び傾斜面部１３５ａの傾斜角度を相互に同一にし且つ耐振穴石枠１２０の傾斜面部１２６ａの傾斜角度及び傾斜面部１２６ｂの傾斜角度と同一にすることは容易でなく実際には多少なりともずれる虞れが高いので耐振座体１３０と耐振穴石枠１２０との傾斜面部１３５ａ，１２６ａおよび１３５ｂ，１２６ｂの間の実効的な摩擦抵抗が大きくなり元の位置に戻りにくくなる虞れがある。   However, since the displacement at the inclined surface portions 135a, 126a and 135b, 126b between the vibration-resistant seat body 130 and the vibration-resistant hole stone frame 120 is displacement (sliding) along the contact surface between the metals, the frictional resistance is large. It is difficult for the vibration-resistant seat body that has received the impact to reliably return to its original position. As a result, the hole stone 117 may be displaced from the center, and the rotation center axis of the balance 103 may remain displaced from the center. In addition, the inclination angle of the inclined surface portion 135a and the inclination angle of the inclined surface portion 135a of the vibration-proof seat 130 are made the same, and the inclination angle of the inclined surface portion 126a and the inclination angle of the inclined surface portion 126b of the vibration-proof hole stone frame 120 are made the same. Since it is not easy and there is a high possibility that it actually shifts somewhat, the effective frictional resistance between the inclined surface portions 135a, 126a and 135b, 126b between the vibration-proof seat 130 and the vibration-proof hole stone frame 120 is increased, and the original There is a risk that it will be difficult to return to the position.

この耐振軸受機構１０１は、機械式時計１０２のてんぷ１０３のてん真１４０の両端の小径ほぞ部１４１Ｆ，１４１Ｒにおいててん真１４０を支える。以下では、耐振軸受機構１０１Ｆ及び１０１Ｒ並びにその部品ないし要素について、同一の符号の後に添字Ｆ又はＲを付して示す。両者を区別しないとき又は総称するときは添字ＦやＲを省く。   The vibration-proof bearing mechanism 101 supports the balance stem 140 at the small diameter tenon portions 141F and 141R at both ends of the balance stem 140 of the balance 103 of the mechanical timepiece 102. In the following description, the vibration-resistant bearing mechanisms 101F and 101R and their components or elements are indicated by adding the suffix F or R after the same reference numerals. When the two are not distinguished or collectively referred to, the subscripts F and R are omitted.

受石１１０Ｆ，１１０Ｒのほぞ受面ないしスラスト軸受面１１１Ｆ，１１１Ｒは平面になっている。時計１０２の裏蓋側ないしてんぷ受側にあるてん真１４０のほぞ部１４１Ｆを支える耐振軸受機構（いわゆるてんぷ上軸受）１０１Ｆ及び時計１０２の文字板側にあるてん真１４０のほぞ部１４１Ｒを支える耐振軸受機構（いわゆるてんぷ下軸受）１０１Ｒは、実際上同様に構成されている。   The tenon receiving surfaces or thrust bearing surfaces 111F and 111R of the stones 110F and 110R are flat. Anti-vibration bearing mechanism (so-called balance wheel upper bearing) 101F supporting the tenon portion 141F of the balance stem 140 on the back cover side of the watch 102 and the balance receiving portion 101R and the tenon portion 141R of the balance stem 140 on the dial side of the watch 102. The bearing mechanism (the so-called balance balance bearing) 101R is actually configured in the same manner.

ここで、てんぷ１０３は、耐振軸受機構１０１の形態の上下の耐振軸受１０１Ｆ，１０１Ｒに加えて、てん真１４０やてんわ１５０やひげぜんまい１５５を備え、裏蓋側の耐振軸受１０１Ｆにおいててんぷ受１０５に取付けられている。なお、てんぷ受１０５及び文字板側の耐振軸受１０１Ｒは、夫々、地板１０８に取付けられている。ひげぜんまい１５５は、てん真１４０の中心軸線Ｃのまわりの渦巻の形態を備え、うずまきの内周側端部でひげ玉１４３に取付けられうずまきの外周側端部でひげ持（図示せず）に取付けられていて、緩急針（図示せず）によりその渦巻（ばね）の実効長が調整される。   Here, in addition to the upper and lower vibration-resistant bearings 101F and 101R in the form of the vibration-resistant bearing mechanism 101, the balance 103 includes a balance stem 140, a balance 150, and a hairspring 155. The balance receiver 105F on the back cover side has a balance 105. Installed on. The balance holder 105 and the vibration-proof bearing 101R on the dial side are attached to the main plate 108, respectively. The hairspring 155 has a spiral shape around the central axis C of the balance stem 140 and is attached to the whisker ball 143 at the inner peripheral end of the spiral spring, and has a whisker (not shown) at the outer peripheral end of the spiral spring. It is attached and the effective length of the spiral (spring) is adjusted by a slow and quick needle (not shown).

てんぷ１０３を含む調速脱進機１０４は、てんぷ１０３に加えて地板１０８で支持されたアンクル１０６及びがんぎ車１０７を有する。アンクル１０６は、ハコ先１６１で振り座の振り石１４４に係合され、入りつめ石及び出つめ石（図示せず）でがんぎ車１０７のがんぎ歯１６２に係合される。がんぎ車１０７はかな部１６４で四番車１７０に噛合されている。ぜんまい（図示せず）の動力で調速脱進機１０４を動作させる四番車１７０は、てんぷ１０３により規定された速度で間欠回転されるがんぎ車１０７により所定の回転速度で間欠回転される。   The controlled escapement 104 including the balance 103 includes an ankle 106 and a escape wheel 107 supported by the main plate 108 in addition to the balance 103. The ankle 106 is engaged with the swing stone 144 of the swing seat at the hook tip 161, and is engaged with the escape tooth 162 of the escape wheel 107 with an entering pallet and an exit pallet (not shown). The escape wheel & pinion 107 is meshed with the fourth wheel & pinion 170 at the kana portion 164. A fourth wheel & pinion 170 that operates the governor escapement 104 with the power of the mainspring (not shown) is intermittently rotated at a predetermined rotation speed by a escape wheel & pinion 107 that is intermittently rotated at a speed defined by the balance 103. The

以上の如く構成された従来の耐振軸受機構１０１Ｆ，１０１Ｒを備えた従来のてんぷ１０３を有する従来の時計１０２では、図１３の（ａ）及び（ｂ）に示したようにてんぷ１０３が適切な状態ＰＳ０にある場合、時計２は適切な動作をする。すなわち、受石１１０Ｆ，１１０Ｒの平面状のほぞ受面１１１Ｆ，１１１Ｒがてん真１４０の中心軸線Ｃに対して垂直になるように裏蓋側及び文字板側の耐振軸受機構１０１Ｆ，１０１Ｒ及び該機構１０１Ｆ，１０１Ｒの受石１１０Ｆ，１１０Ｒが配置され且つてん真１４０の中心軸線Ｃが実際上傾いていない場合、裏蓋側の耐振軸受機構１０１Ｆが文字板側の耐振軸受機構１０１Ｒの上に位置する平姿勢ＰＰ１を採っても、文字板側の耐振軸受機構１０１Ｒが裏蓋側の耐振軸受機構１０１Ｆの上に位置する裏平姿勢ＰＰ２を採っても、てん真１４０は、下側に位置するほぞ部１４１Ｒ，１４１Ｆの端面１４５Ｒ，１４５Ｆのうち実際上中心軸線Ｃの通る位置Ｃ０Ｒ，Ｃ０Ｆにおいてその下側に位置する文字板側又は裏蓋側の耐振軸受機構１０１Ｒ，１０１Ｆの受石１１０Ｒ，１１０Ｆのほぞ受面１１１Ｒ，１１１Ｆと当接し、該位置Ｃ０Ｒ，Ｃ０Ｆを中心に回転されることになる。従って、てんぷ１０３は、時計１０２の姿勢ＰＰ１，ＰＰ２によらず、実際上同様に動作し得、姿勢差が最低限に抑えられ得る。   In the conventional timepiece 102 having the conventional balance 103 having the conventional vibration-proof bearing mechanisms 101F and 101R configured as described above, the balance 103 is in an appropriate state as shown in FIGS. 13 (a) and 13 (b). When in PS0, watch 2 operates appropriately. That is, the anti-vibration bearing mechanisms 101F and 101R on the back cover side and the dial side and the mechanisms so that the flat tenon receiving surfaces 111F and 111R of the stones 110F and 110R are perpendicular to the central axis C of the balance stem 140. When the receiving stones 110F and 110R of 101F and 101R are arranged and the central axis C of the balance stem 140 is not actually inclined, the vibration-proof bearing mechanism 101F on the back cover side is positioned on the vibration-proof bearing mechanism 101R on the dial side. Even if the flat posture PP1 is adopted, even if the dial-side vibration-proof bearing mechanism 101R adopts the back-flat posture PP2 in which the dial-side vibration-proof bearing mechanism 101R is positioned on the back cover-side vibration-proof bearing mechanism 101F, the balance stem 140 is located on the lower side. Anti-vibration bearing mechanism 1 on the dial side or back cover side located below the positions C0R and C0F through which the center axis C actually passes among the end surfaces 145R and 145F of the portions 141R and 141F. 1R, 101F of endstone 110R, tenon 110F receiving surface 111R, 111F abuts, is to be rotated the position C0R, the C0F the center. Therefore, the balance with hairspring 103 can actually operate in the same manner regardless of the postures PP1 and PP2 of the timepiece 102, and the difference in posture can be minimized.

しかしながら、従来の耐振軸受機構１０１Ｆ，１０１Ｒを備えた従来のてんぷ１０３を有する従来の時計１０２において、裏蓋側の耐振軸受機構１０１Ｆが文字板側の耐振軸受機構１０１Ｒの上に位置する向きすなわち姿勢（以下では、「平姿勢」ともいう）ＰＰ１に時計１０２が配置されている場合と文字板側の耐振軸受機構１０１Ｒが裏蓋側の耐振軸受機構１０１Ｆの上に位置する向きすなわち姿勢（以下では、「裏平姿勢」ともいう）ＰＰ２に時計１０２が配置されている場合とでは、てんぷ１０３の状態が異なる状況が生じ得る。   However, in the conventional timepiece 102 having the conventional balance 103 having the conventional vibration-resistant bearing mechanisms 101F and 101R, the orientation or posture in which the vibration-resistant bearing mechanism 101F on the back cover side is positioned on the vibration-resistant bearing mechanism 101R on the dial side. (Hereinafter, also referred to as “flat posture”) When the watch 102 is disposed on the PP1 and in the orientation or posture in which the anti-vibration bearing mechanism 101R on the dial side is positioned on the anti-vibration bearing mechanism 101F on the back cover side (hereinafter, The balance of the balance 103 may be different from the case where the timepiece 102 is disposed on the PP2.

例えば、図１４の（ａ）及び（ｂ）に示したように、てんぷ受１０５側ないし裏蓋側の受石１１０Ｆが少し（例えば１度程度）傾いた状態で押さえばね１３７Ｆによって穴石枠１２０Ｆに取付けられた状態ＰＳ１では、図１４の（ａ）に示した通り裏蓋側の耐振軸受機構１０１Ｆが文字板側の耐振軸受機構１０１Ｒの上に位置する平姿勢ＰＰ１に時計１０２が配置されている場合と、図１４の（ｂ）に示した通り文字板側の耐振軸受機構１０１Ｒが裏蓋側の耐振軸受機構１０１Ｆの上に位置する裏平姿勢ＰＰ２に時計１０２が配置されている場合とでは、てんぷ１０３の状態が異なる状況になる。なお、受石１１０Ｆの傾きは、典型的には、穴石枠１２０Ｆが耐振座体１３０Ｆに対して傾いた場合に生じる。   For example, as shown in FIGS. 14 (a) and 14 (b), the stone holder 110F on the balance holder side or the back cover side is tilted slightly (for example, about 1 degree) by the presser spring 137F and the hole stone frame 120F. In the state PS1 attached to the watch, as shown in FIG. 14A, the timepiece 102 is arranged in a flat posture PP1 in which the vibration-proof bearing mechanism 101F on the back cover side is positioned on the vibration-proof bearing mechanism 101R on the dial side. And the case where the timepiece 102 is arranged in the back flat posture PP2 where the vibration-proof bearing mechanism 101R on the dial side is positioned on the vibration-proof bearing mechanism 101F on the back cover side as shown in FIG. Now, the balance 103 is in a different state. The inclination of the stone 110F typically occurs when the hole stone frame 120F is inclined with respect to the vibration-proof seat body 130F.

てんぷ受１０５側の受石１１０Ｆが傾いて取付けられた状態ＰＳ１にある場合において図１４の（ａ）に示したように文字板側の耐振軸受機構１０１Ｒが下側に位置していて文字板側の受石１１０Ｒがそのほぞ受面１１１Ｒでてん真１４０のほぞ１４１Ｒの端面を受ける平姿勢ＰＰ１では、図１３の（ａ）や（ｂ）の場合と実際上同様に、てん真１４０は、下側に位置するほぞ部１４１Ｒの端面１４５Ｒのうち実際上中心軸線Ｃの通る位置Ｃ０Ｒにおいてその下側に位置する文字板側の耐振軸受機構１０１Ｒの受石１１０Ｒのほぞ受面１１１Ｒと当接し、該位置Ｃ０Ｒを中心に回転されることになる。   In the state PS1 in which the balance stone 110F on the balance holder 105 side is tilted and attached, the vibration-proof bearing mechanism 101R on the dial side is positioned on the lower side as shown in FIG. In the flat posture PP1 in which the mortar 110R receives the end face of the tenon 141R of the balance stem 140 at its tenon receiving surface 111R, the balance stem 140 is the same as in FIGS. 13 (a) and 13 (b). The tenon face 111R of the stone 110R of the anti-vibration bearing mechanism 101R on the dial plate side located below the end face 145R of the tenon part 141R located on the side at the position C0R that actually passes through the center axis C, It is rotated around the position C0R.

これに対して、時計１０２が反転されて、図１４の（ｂ）に示したようにてんぷ受１０５側（裏蓋側）の耐振軸受機構１０１Ｆが下側に位置していててんぷ受１０５側の受石１１０Ｆがそのほぞ受面１１１Ｆでてん真１４０のほぞ１４１Ｆの端面を受ける姿勢ＰＰ２では、図１３の（ａ）や（ｂ）の場合や図１４の（ａ）の場合と異なり、てん真１４０は、中心軸線Ｃから離れていて、下側に位置するほぞ部１４１Ｆの端面１４５Ｆのうち受石１１０の傾斜方向と一致する側の端縁ＣａＦにおいてその下側に位置するてんぷ受１０５側の耐振軸受機構１０１Ｆの受石１１０Ｆのほぞ受面１１１Ｆと当接する。従って、てん真１４０の回転中心ＣａＦは、該てん真１４０の中心軸線Ｃとは異なり該中心軸線ＣからΔｐｒ（ほぞ部１４１の半径に相当する大きさで、数１０μｍ程度である）離れた点ＣａＦ（Ｃａ）になり、回転軸が安定しない。   On the other hand, the timepiece 102 is inverted, and the anti-vibration bearing mechanism 101F on the balance 105 side (back cover side) is positioned on the lower side as shown in FIG. In the posture PP2 in which the mortar 110F receives the end surface of the tenon 141F of the balance stem 140 at the tenon receiving surface 111F, unlike the cases of FIGS. 13 (a) and 13 (b) and FIG. 140 is apart from the central axis C, and on the side of the balance 105 located on the lower end edge CaF of the end surface 145F of the tenon portion 141F located on the lower side, which coincides with the inclination direction of the stone 110. It contacts with the tenon receiving surface 111F of the stone 110F of the vibration-proof bearing mechanism 101F. Therefore, the rotation center CaF of the balance stem 140 is different from the center axis C of the balance stem 140 at a point away from the center axis C by Δpr (a size corresponding to the radius of the tenon portion 141 and about several tens of μm). It becomes CaF (Ca) and the rotation axis is not stable.

従って、この状態ＰＳ１にある場合、時計１０２が平姿勢ＰＰ１を採るときと裏平姿勢ＰＰ２を採るときとで、てんぷ１０３の動作が異なり、相当程度の歩度の差が生じるのを避け難い。   Therefore, in this state PS1, it is difficult to avoid a considerable difference in rate due to the operation of the balance with hairspring 103 being different when the timepiece 102 takes the flat posture PP1 and when the watch 102 takes the flat posture PP2.

また、例えば、図１５の（ａ）及び（ｂ）（特に図１５の（ｂ））に示したように、裏平姿勢ＰＰ２において、てん真１４０の中心軸線Ｃが傾いている場合ＰＳ２も、図１４の（ａ）及び（ｂ）の場合ＰＳ１と同様に、てん真１４０は、中心軸線Ｃから離れていて、下側に位置するほぞ部１４１Ｆの端面１４５Ｆのうちてん真１４０の中心軸線Ｃの傾斜方向と一致する側の端縁ＣａＦにおいてその下側に位置するてんぷ受１０５側の耐振軸受機構１０１Ｆの受石１１０Ｆのほぞ受面１１１Ｆと当接する。従って、てん真１４０の回転中心ＣａＦは、該てん真１４０の中心軸線Ｃとは異なり該中心軸線ＣからΔｐｒ（ほぞ部１４１の半径に相当する大きさで、数１０μｍ程度である）離れた点ＣａＦ（Ｃａ）になり、回転軸が安定しない。   Further, for example, as shown in FIGS. 15A and 15B (particularly FIG. 15B), PS2 when the central axis C of the balance stem 140 is inclined in the back flat posture PP2, 14A and 14B, as with PS1, the balance stem 140 is separated from the central axis C, and the central axis C of the balance stem 140 of the end surface 145F of the tenon portion 141F located on the lower side is located. At the edge CaF on the side that coincides with the inclination direction, the tenon receiving surface 111F of the stone 110F of the anti-vibration bearing mechanism 101F on the balance 105 side located below the edge CaF. Therefore, the rotation center CaF of the balance stem 140 is different from the center axis C of the balance stem 140 at a point away from the center axis C by Δpr (a size corresponding to the radius of the tenon portion 141 and about several tens of μm). It becomes CaF (Ca) and the rotation axis is not stable.

この状態ＰＳ２にある場合にも、時計１０２が平姿勢ＰＰ１を採るときと裏平姿勢ＰＰ２を採るときとで、てんぷ１０３の動作が異なり、相当程度の歩度の差が生じるのを避け難い。   Even in this state PS2, it is difficult to avoid a significant difference in rate due to the difference in the operation of the balance with the balance 102 when the watch 102 takes the flat posture PP1 and when the watch 102 takes the flat posture PP2.

なお、てん真１４０の中心軸線Ｃが傾くのは、例えば、てんわ１５０の周方向の重量バランスがずれている場合に生じ得る。なお、厳密に言えば、例えば、渦巻きばねの形態のひげぜんまい１５５の巻上げ動作やほどけ動作の際にひげ玉１４３を介しててん真１４０にトルクが加えられることに応じててん真１４０の中心軸線Ｃは多少なりとも傾いたり該傾きが多少なりとも変動する。   The central axis C of the balance stem 140 may be inclined when, for example, the balance of the weight of the balance 150 in the circumferential direction is deviated. Strictly speaking, for example, the center axis of the balance stem 140 according to the torque being applied to the balance stem 140 via the hair ball 143 during the winding operation or unwinding operation of the spiral spring 155 in the form of a spiral spring. C tilts somewhat or fluctuates slightly.

更に、図１６の（ａ）及び（ｂ）に示したように、てんぷ受１０５側のほぞ１４１Ｆの端面１４５Ｆがてん真１４０の中心軸線Ｃに対して傾斜している状態ＰＳ３の場合も、裏平姿勢ＰＰ２において、端面１４５Ｆのうち傾斜に伴って突出した端縁ＣａＦがその下側に位置するてんぷ受１０５側の耐振軸受機構１０１Ｆの受石１１０Ｆのほぞ受面１１１Ｆと当接する。従って、てん真１４０の回転中心ＣａＦは、該てん真１４０の中心軸線Ｃとは異なり該中心軸線ＣからΔｐｒ（ほぞ部１４１の半径に相当する大きさで、数１０μｍ程度である）離れた点ＣａＦ（Ｃａ）になり、回転軸が安定しない。   Further, as shown in FIGS. 16A and 16B, in the case of the state PS3 in which the end surface 145F of the tenon 141F on the balance 105 side is inclined with respect to the central axis C of the balance stem 140, In the flat posture PP2, the end edge CaF of the end face 145F that protrudes with the inclination comes into contact with the tenon receiving face 111F of the stone holder 110F of the vibration-proof bearing mechanism 101F on the balance holder 105 side located below the end edge CaF. Therefore, the rotation center CaF of the balance stem 140 is different from the center axis C of the balance stem 140 at a point away from the center axis C by Δpr (a size corresponding to the radius of the tenon portion 141 and about several tens of μm). It becomes CaF (Ca) and the rotation axis is not stable.

この状態ＰＳ３にある場合にも、時計１０２が平姿勢ＰＰ１を採るときと裏平姿勢ＰＰ２を採るときとで、てんぷ１０３の動作が異なり、相当程度の歩度の差が生じるのを避け難い。   Even in this state PS3, it is difficult to avoid a considerable difference in rate due to the operation of the balance with hairspring 103 being different when the timepiece 102 takes the flat posture PP1 and when the watch 102 takes the flat posture PP2.

一方、時計１０２が平姿勢ＰＰ１を採る場合と裏平姿勢ＰＰ２を採る場合とで上述のような種々の理由で歩度に差異が生じる虞れが高くなるのを避けるべく、てん真１４０のほぞ１４１Ｆ，１４１Ｒの端面１４５Ｆ，１４５Ｒを平面状にしておく代わりに、該端面ないしほぞ先１４５Ｆ，１４５Ｒを凸状に湾曲させることも提案されている。   On the other hand, the tenon 141F of the balance stem 140 is to avoid an increase in the possibility of a difference in rate for various reasons as described above between when the watch 102 takes the flat posture PP1 and when the watch 102 takes the flat posture PP2. , 141R, instead of keeping the end surfaces 145F and 145R flat, it is also proposed to curve the end surfaces or tenons 145F and 145R in a convex shape.

しかしながら、ほぞ１４１Ｆ，１４１Ｒの直径は通常高々０．１ｍｍ程度であるので、凸状湾曲面の形状の寸法精度を高く保ち難く、凸状湾曲面の形状のバラツキに伴ってほぞ丈のバラツキ換言すればてん真１４０の長さのバラツキが大きくなると、平姿勢ＰＰ１と裏平姿勢ＰＰ２とでひげぜんまい１５５の形状に差異が生じる虞れが高くなる。従って、本来はてん真１４０の中心軸線Ｃに対して垂直な平面内で渦巻状に延在すべきひげぜんまい１５５が、例えば、時計が平姿勢ＰＰ１にある場合又は裏平姿勢ＰＰ２にある場合において多少なりともロート状になってそのばね特性が変動し、歩度差を生じさせる虞れが高くなるのを避け難い。   However, since the diameters of the tenons 141F and 141R are usually about 0.1 mm at most, it is difficult to keep the dimensional accuracy of the shape of the convex curved surface high. In other words, the tenon length varies with the variation in the shape of the convex curved surface. When the variation in the length of the balance stem 140 is increased, there is a high possibility that the shape of the hairspring 155 is different between the flat posture PP1 and the back flat posture PP2. Accordingly, in the case where the balance spring 155 which should originally extend in a spiral shape in a plane perpendicular to the central axis C of the balance stem 140 is, for example, when the watch is in the flat posture PP1 or in the reverse flat posture PP2. It is difficult to avoid the possibility that the shape of the spring becomes fluctuated to some extent and the spring characteristics fluctuate and a difference in yield occurs.

特開２００９-１３９１８０号公報JP 2009-139180 A 特許第４５９８７０１号公報Japanese Patent No. 4598701

本発明は、前記諸点に鑑みなされたものであって、その目的とするところは、てん真の支持状態の変動によるてんぷの動作の変動が最低限に抑えられ得るてんぷの耐振軸受機構、これを備えたてんぷ及びこれを備えた時計を提供することにある。   The present invention has been made in view of the above-described points, and an object of the present invention is to provide a vibration-proof bearing mechanism for a balance capable of minimizing fluctuations in the operation of the balance due to fluctuations in the support state of the balance. The object is to provide a balance with a balance and a watch with the balance.

本発明のてんぷの耐振軸受機構は、前記目的を達成すべく、スラスト軸受として働く受石と、ジャーナル軸受として働く穴石部及び該穴石部と一体の穴石枠部を備えた穴石・穴石枠一体構造体と、該穴石・穴石枠一体構造体を支えると共に大径の開口端側に係合部を備える耐振座体と、外周側において耐振座体の係合部で支持され内周側において受石を穴石・穴石枠一体構造体に弾性的に押付けて保持する押さえばねとを有するてんぷの耐振軸受機構であって、受石のうち耐振軸受機構により支えられる軸の端面に対面し該軸の端面に当接する表面が外に突出するように湾曲した凸面からなる。   In order to achieve the above object, the vibration-proof bearing mechanism of the balance of the present invention includes a stone that works as a thrust bearing, a cobblestone portion that works as a journal bearing, and a cobblestone / cavestone that is integrated with the cobblestone portion. A frame-integrated structure, a vibration-resistant seat body that supports the cobblestone / holestone frame-integrated structure and has an engagement portion on the large-diameter opening end side, and an inner periphery that is supported by the engagement portion of the vibration-resistant seat body. An anti-vibration bearing mechanism for a balance with a holding spring that elastically presses and holds the jewel on the hole stone / hole stone frame integrated structure on the circumferential side, and the end face of the shaft that is supported by the vibration-proof bearing mechanism in the jewel And a convex surface that is curved so that the surface that contacts the end surface of the shaft protrudes outward.

本発明のてんぷの耐振軸受機構では、「受石のうち耐振軸受機構により支えられる軸の端面に対面し該軸の端面に当接する表面が外に突出するように湾曲した凸面からなる」ので、穴石枠と押さえばねとで保持される受石が傾いたり、軸の中心軸線（重心線）が傾いたり、軸の端面が傾いたりしても、「受石のうち耐振軸受機構により支えられる軸の端面に対面し該軸の端面に当接する表面」が「平面」である場合と比較して、これらの傾斜に伴う回転支持部の位置ズレが最低限に抑えられる。従って、例えば、時計の姿勢が歩度に与える影響を最低限に抑えることも可能になる。また、「受石の表面（ほぞ受面）が外に突出するように湾曲した凸面である」ので、回転支持されるべき軸の端面に対して実際上一点で当接して支持し得るから、軸の回転が安定し易い。なお、この場合、てんぷの耐振軸受機構によって支持されるべき軸（てん真）の端部の端面ないし該端部（ほぞ部）の先端（ほぞ先）を平面状にし得るので、軸（てん真）の長さのバラツキを最低限に抑え得る。   In the vibration-proof bearing mechanism of the balance of the present invention, `` consisting of a convex surface curved so that the surface facing the end surface of the shaft supported by the vibration-resistant bearing mechanism of the stone and contacting the end surface of the shaft protrudes outside. '' Even if the stone supported by the hole stone frame and the holding spring is tilted, the center axis (center of gravity) of the shaft is tilted, or the end surface of the shaft is tilted, As compared with the case where the “surface facing the end surface of the shaft and abutting against the end surface of the shaft” is a “plane”, the positional deviation of the rotation support portion due to the inclination is minimized. Therefore, for example, the influence of the watch posture on the rate can be minimized. Moreover, since “the surface of the stone (tenon receiving surface) is a convex surface curved so as to protrude outward”, it can be supported by actually contacting the end surface of the shaft to be rotated and supported at one point. Shaft rotation is easy to stabilize. In this case, since the end surface of the end of the shaft (balance) or the tip (tenon) of the end (tenon) to be supported by the vibration-proof bearing mechanism of the balance can be made flat, ) Can be minimized.

また、本発明のてんぷの耐振軸受機構では、「ジャーナル軸受として働く穴石部及び該穴石部と一体の穴石枠部を備えた穴石・穴石枠一体構造体」が設けられ、穴石部と穴石枠部とが一体的に構成され一体形成されているので部品点数が低減され得、「外周側において耐振座体の係合部で支持された押さえばねが内周側において受石を穴石・穴石枠一体構造体に弾性的に押付けて保持する」ので、受石を穴石枠を介して位置決めするのではなくて穴石に対して直接位置決めし得るから、受石の位置決めないし位置出しが容易且つ確実に行われ得る。   Further, in the vibration-proof bearing mechanism of the balance of the present invention, there is provided a “hole stone / hole stone frame integrated structure including a hole stone portion that functions as a journal bearing and a hole stone frame portion integrated with the hole stone portion”, Since the hole stone frame portion is integrally formed and integrally formed, the number of parts can be reduced. “On the outer peripheral side, the holding spring supported by the engaging portion of the vibration-resistant seat body has the hole on the inner peripheral side. `` Because it is elastically pressed and held on the stone / hole stone frame integrated structure '', the stone can be positioned directly with respect to the hole stone, not through the hole stone frame. Positioning can be performed easily and reliably.

加えて、本発明のてんぷの耐振軸受機構では、「ジャーナル軸受として働く穴石部及び該穴石部と一体の穴石枠部を備えた穴石・穴石枠一体構造体」が設けられ、「耐振座体が穴石・穴石枠一体構造体を支える」ように構成されるので、通常金属製である耐振座体が通常金属製である穴石枠ではなくて石（広義のセラミック）製である穴石・穴石枠一体構造体に当接してこれを支えることになるから、従来のてんぷの耐振軸受機構の場合と異なり（耐振座体と穴石枠との間における）「金属・金属」間の摺動ではなくて、（耐振座体と穴石・穴石枠一体構造体との間における）「金属・セラミック」間の摺動になることから、摩擦抵抗が低減され得る。従って、衝撃（外力）により受石の位置がずれても、衝撃（外力）がなくなると受石が元の正規の位置に戻り易く、軸受機構が最適な状態で動作され易い。本発明のてんぷの耐振軸受機構では、典型的には、穴石・穴石枠一体構造体が広義のセラミック製で、耐振座体が金属製である。   In addition, the vibration-proof bearing mechanism of the balance of the present invention is provided with a “hole stone / hole stone frame integrated structure including a hole stone portion serving as a journal bearing and a hole stone frame portion integrated with the hole stone portion”. Since the seat is configured to support the cave stone and cave stone frame integrated structure, the vibration-resistant seat, which is usually made of metal, is made of stone (broadly defined ceramic) rather than the cobblestone frame that is usually made of metal. Unlike a conventional balance with anti-vibration bearing mechanism for balances, it is in contact with and supports a certain hole stone / hole stone frame integrated structure (between the vibration-resistant seat body and hole stone frame). Friction resistance can be reduced because the sliding is between the “metal and ceramic” (between the vibration-proof seat and the integrated stone / hole stone frame structure). Therefore, even if the position of the stone is shifted due to an impact (external force), if the impact (external force) is lost, the stone is likely to return to the original normal position, and the bearing mechanism is easily operated in an optimum state. In the vibration-proof bearing mechanism of the balance of the present invention, typically, the cobblestone / cavestone frame integrated structure is made of ceramic in a broad sense, and the vibration-proof seat is made of metal.

本発明のてんぷの耐振軸受機構では、典型的には、受石の凸面が球面の一部からなる。   In the vibration-proof bearing mechanism of the balance of the present invention, typically, the convex surface of the stone is made of a part of a spherical surface.

その場合、受石の凸面が正確に乃至高精度に形成され易い。なお、凸面は、広義にみて球面を含む回転楕円体面であれば、所望ならば、他の形状でもよい。凸面が外向きに凸の滑らかに湾曲した形状であれば、凸面に回転対称性がなくてもよい。但し、受石の傾きの如きてん真の支持状態の変動が歩度の如きてんぷの動作に与える影響（動作の変動）を最低限に抑えるためには、部分球状面（球面の一部）であることが好ましい。   In that case, the convex surface of the stone is easily formed with high accuracy. Note that the convex surface may have another shape if desired as long as it is a spheroid surface including a spherical surface in a broad sense. If the convex surface is an outwardly convex and smoothly curved shape, the convex surface may not have rotational symmetry. However, a partial spherical surface (part of a spherical surface) is used in order to minimize the influence (variation of movement) that the variation of the true support state such as the inclination of the stone receives on the movement of the balance such as the rate. It is preferable.

本発明のてんぷの耐振軸受機構では、典型的には、受石が凸レンズ様の形状を有し、穴石・穴石枠一体構造体が円錐台状部を備え、該円錐台状部の大径端部のところで受石を支えるように構成され、押さえばねが、外周側において耐振座体の係合部で支持され内周側において穴石・穴石枠一体構造体の大径端部のところに受石を弾性的に押付けて保持するように構成される。   In the vibration-proof bearing mechanism of the balance of the present invention, typically, the jewel has a convex lens-like shape, the cobble stone / cave stone frame integrated structure includes a truncated cone-shaped portion, and the large size of the truncated cone-shaped portion. The holding spring is supported by the engaging portion of the vibration-proof seat body on the outer peripheral side, and the large-diameter end of the hole stone / hole stone frame integrated structure on the inner peripheral side. However, it is configured to elastically press and hold the stone.

その場合、耐振軸受機構の厚さを最低限に抑えた状態で、且つ該軸受機構に対面する軸の端面が平面であっても、てん真の支持状態の変動によるてんぷの動作の変動が最低限に抑えられ得、平姿勢や裏平姿勢の如き姿勢差による動作の変動も最低限に抑えられ得る。   In such a case, even if the thickness of the vibration-proof bearing mechanism is minimized and the end face of the shaft facing the bearing mechanism is flat, fluctuations in the balance of the balance due to fluctuations in the true support state are minimized. The movement variation due to the posture difference such as the flat posture and the back flat posture can be suppressed to the minimum.

本発明のてんぷの耐振軸受機構の別の典型的な例では、受石が球体からなる。   In another typical example of the vibration-proof bearing mechanism of the balance of the present invention, the stone is made of a sphere.

その場合、受石が高寸法精度で形成され、てんぷの動作変動も最低限に抑えられ得る。   In this case, the stone is formed with high dimensional accuracy, and the fluctuation of the balance of the balance can be suppressed to the minimum.

また、この別の典型的な例の場合、球状の受石が穴石・穴石枠一体構造体の穴石部に当接可能に穴石・穴石枠一体構造体の穴石枠部の円筒状領域内に配置され、押さえばねが、外周側において耐振座体の係合部で支持され内周側において穴石・穴石枠一体構造体の穴石枠部の円筒状領域内で穴石部の対向端面に受石を押付けることにより、受石を弾性的に保持するように構成されている。   In the case of this other typical example, the spherical stones can come into contact with the cobblestones of the cobblestone / cavestone frame integrated structure, and the cobblestone / cavestone frame integrated structure The holding spring is arranged in the cylindrical region, and is supported by the engaging portion of the vibration-proof seat on the outer peripheral side, and in the cylindrical region of the hole stone frame portion of the stone stone / hole stone frame integrated structure on the inner peripheral side The stone is configured to be held elastically by pressing the stone against the opposite end surfaces of the stone.

その場合、受石が球体（ボール）の形態であることによる厚さの増大が最低限に抑えられた状態で、受石が球体（ボール）であることの利点が享受され得る。   In that case, the advantage that the stone is a sphere (ball) can be enjoyed in a state where the increase in thickness due to the shape of the jewel is in the form of a sphere (ball) is minimized.

本発明のてんぷの耐振軸受機構では、典型的には、穴石・穴石枠一体構造体の穴石枠部のうち受石のほぞ受面を支える部位が円錐台状である。   In the vibration-proof bearing mechanism of a balance of the present invention, typically, the portion of the cobblestone frame portion of the cobblestone / cavestone frame integrated structure that supports the tenon receiving surface of the crest is a truncated cone.

その場合、てんぷの動作の変動を最低限に抑え得る。円錐台状の代わりに球状でもよい。   In this case, fluctuations in the balance operation can be minimized. A spherical shape may be used instead of the truncated cone shape.

本発明のてんぷは、前記目的を達成すべく、上述のような耐振軸受機構を有する。   The balance with hairspring of the present invention has the vibration-proof bearing mechanism as described above in order to achieve the above object.

本発明のてんぷでは、耐振軸受機構により支えられる軸がてん真からなり、てん真の両端部にあり該てん真の本体部よりも小径のほぞ部の端面が実際上平面状である。   In the balance of the present invention, the shaft supported by the vibration-proof bearing mechanism is made of the balance stem, and the end surface of the tenon portion having a diameter smaller than that of the main body portion of the balance stem is actually planar.

その場合、てん真の長さが高い寸法精度で得られ、その結果、時計が平姿勢であるか裏平姿勢であるかによる歩度の変動が最低限に抑えられ得る。   In this case, the length of the balance can be obtained with high dimensional accuracy, and as a result, fluctuations in the rate depending on whether the watch is in a flat posture or a back flat posture can be minimized.

本発明の時計は、前記目的を達成すべく、上述のような耐振軸受機構又は上述のようなてんぷを有する。   The timepiece of the present invention has the vibration-proof bearing mechanism as described above or the balance with hairspring as described above in order to achieve the object.

本発明の好ましい一実施例の耐振軸受機構を備えた本発明の好ましい一実施例のてんぷを有する本発明の好ましい一実施例の時計の一部を示した断面説明図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional explanatory view showing a part of a timepiece according to a preferred embodiment of the present invention having a balance with a vibration resistant bearing mechanism according to a preferred embodiment of the present invention. 図１のてんぷの耐振軸受機構を示したもので、（ａ）は平面説明図、（ｂ）は断面説明図。The vibration-proof bearing mechanism of the balance of FIG. 1 is shown, (a) is a plane explanatory view, (b) is a cross-sectional explanatory view. 図１のてんぷの耐振軸受機構にてん真のほぞ部を含む一端部が嵌った状態を示した断面説明図。Cross-sectional explanatory drawing which showed the state which the one end part including the tenon part of a true balance was fitted in the vibration-proof bearing mechanism of the balance of FIG. 図１の時計のてんぷの耐振軸受機構においててんぷ受側の受石が傾いた状態にある場合を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。1 shows a case where the balance receiving stone on the balance of the balance of the balance of the timepiece of FIG. 1 is tilted. FIG. 1 (a) shows the balance of the balance of the balance and the balance of the balance in the timepiece in the flat position. The cross-sectional explanatory drawing which showed the both ends containing a part, (b) is the cross-sectional explanatory drawing which showed the both ends containing the vibration-proof bearing mechanism of a balance with a balance tenon in the timepiece in a back flat posture. 図１の時計のてんぷの耐振軸受機構において時計が裏平姿勢を採った際にてん真のほぞ部が傾いた状態になる場合を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。FIG. 1 shows a case where the true tenon portion is tilted when the timepiece is in the back flat position in the vibration-proof bearing mechanism of the timepiece of FIG. 1, wherein (a) is a balance in the timepiece in the flat position. The cross-sectional explanatory drawing which showed the both ends including the tenon part of a vibration-proof bearing mechanism and a balance of a balance of the balance, (b) showed both ends including the vibration-proof bearing mechanism of a balance and the tenon of a balance in a watch in a back-flat position. Cross-sectional explanatory drawing. 図１の時計のてんぷの耐振軸受機構においててん真のほぞ部のうちてんぷ受側のほぞ部の端面が傾いた状態にある場合を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。FIG. 1 shows a case where the end face of the balance receiving side of the balance of the balance of the balance of the balance of the balance of the timepiece of FIG. 1 is in an inclined state. FIG. The cross-sectional explanatory drawing which showed the both ends including the tenon part of a vibration-proof bearing mechanism and a balance of a balance of the balance, (b) showed both ends including the vibration-proof bearing mechanism of a balance and the tenon of a balance in a watch in a back-flat position. Cross-sectional explanatory drawing. 本発明の別の好ましい一実施例の耐振軸受機構を示したもので、（ａ）は平面説明図、（ｂ）は断面説明図。The vibration-proof bearing mechanism of another preferable one Example of this invention is shown, (a) is plane explanatory drawing, (b) is sectional explanatory drawing. 図７の耐振軸受機構にてん真のほぞ部を含む一端部が嵌った状態を示した本発明の別の好ましい一実施例のてんぷの一部を示した断面説明図。Sectional explanatory drawing which showed a part of balance with another preferable Example of this invention which showed the state which the one end part containing a true tenon part fitted in the vibration-proof bearing mechanism of FIG. 図７の耐振軸受機構を有するてんぷにおいて種々の条件下での回転中心の位置ズレの程度を示したもので、（ａ）はてん真及び受石が所定の状態にある基準の場合を示した断面説明図、（ｂ）は受石が傾いた状態にある場合を示した断面説明図、（ｃ）はてん真が傾いた状態にある場合を示した断面説明図。FIG. 7 shows the degree of positional deviation of the rotation center under various conditions in the balance with the vibration-proof bearing mechanism of FIG. 7, and (a) shows the reference case in which the balance and the stone are in a predetermined state. Cross-sectional explanatory drawing, (b) is a cross-sectional explanatory view showing the case where the stone is tilted, (c) is a cross-sectional explanatory view showing the case where the balance is tilted. 従来の耐振軸受機構を備えた従来のてんぷを有する従来の時計の一部を示した断面説明図。Cross-sectional explanatory drawing which showed a part of conventional timepiece which has the conventional balance with the conventional vibration-proof bearing mechanism. 図１０の時計の従来の耐振軸受機構を示したもので、（ａ）は平面説明図、（ｂ）は断面説明図。FIG. 11 shows a conventional vibration-proof bearing mechanism of the timepiece of FIG. 10, wherein (a) is a plane explanatory view and (b) is a cross-sectional explanatory view. 図１０のてんぷの耐振軸受機構にてん真のほぞ部を含む一端部が嵌った状態を示した断面説明図。Cross-sectional explanatory drawing which showed the state which the one end part containing the tenon part of a true balance was fitted in the vibration-proof bearing mechanism of the balance of FIG. 図１０の時計のてんぷの耐振軸受機構が適切に動作し得る場合の状態を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。FIG. 11 shows a state in which the vibration-proof bearing mechanism of the balance of the timepiece of FIG. 10 can operate properly, and (a) shows both ends of the balance with the balance of the balance of the balance and the tenon of the balance in the timepiece in a flat position. FIG. 4B is a cross-sectional explanatory view showing both ends including a vibration-proof bearing mechanism of the balance and the tenon of the balance in a timepiece in a flat back position. 図１０の時計のてんぷの耐振軸受機構においててんぷ受側の受石が傾いた状態にある場合を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。10 shows a case where the balance receiving stone on the balance of the balance of the balance of the timepiece of FIG. 10 is tilted. FIG. 10 (a) shows the balance of the balance of the balance and the balance of the balance in the timepiece in the flat position. The cross-sectional explanatory drawing which showed the both ends containing a part, (b) is the cross-sectional explanatory drawing which showed the both ends containing the vibration-proof bearing mechanism of a balance with a balance tenon in the timepiece in a back flat posture. 図１０の時計のてんぷの耐振軸受機構において時計が裏平姿勢を採った際にてん真のほぞ部が傾いた状態になる場合を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。FIG. 10 shows a case where the true tenon portion is tilted when the watch is in the back flat position in the vibration-proof bearing mechanism of the timepiece of FIG. 10, and (a) the balance with the balance in the watch in the flat position. The cross-sectional explanatory drawing which showed the both ends including the tenon part of a vibration-proof bearing mechanism and a balance of a balance of the balance, (b) showed both ends including the vibration-proof bearing mechanism of a balance and the tenon of a balance in a watch in a back-flat position. Cross-sectional explanatory drawing. 図１０の時計のてんぷの耐振軸受機構においててん真のほぞ部のうちてんぷ受側のほぞ部の端面が傾いた状態にある場合を示したもので、（ａ）は平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図、（ｂ）は裏平姿勢にある時計においててんぷの耐振軸受機構及びてん真のほぞ部を含む両端部を示した断面説明図。10 shows a case where the end face of the balance portion of the balance of the balance in the balance of the balance of the balance of the balance of the timepiece of FIG. 10 is tilted. FIG. The cross-sectional explanatory drawing which showed the both ends including the tenon part of a vibration-proof bearing mechanism and a balance of a balance of the balance, (b) showed both ends including the vibration-proof bearing mechanism of a balance and the tenon of a balance in a watch in a back-flat position. Cross-sectional explanatory drawing.

本発明の好ましい一実施の形態を添付図面に示した好ましい一実施例に基づいて説明する。   A preferred embodiment of the present invention will be described based on a preferred embodiment shown in the accompanying drawings.

図１には、本発明の好ましい一実施例の耐振軸受機構１を備えた本発明の好ましい一実施例のてんぷ３を有する本発明の好ましい一実施例の時計２の一部が示され、図２の（ａ）及び（ｂ）には時計２の耐振軸受機構１が拡大して示され、図３には耐振軸受機構１を含むてんぷ３のてん真の一端側部分が拡大して示されている。   FIG. 1 shows a part of a timepiece 2 of a preferred embodiment of the present invention having a balance 3 of a preferred embodiment of the present invention equipped with a vibration-proof bearing mechanism 1 of a preferred embodiment of the present invention. 2 (a) and 2 (b) show an enlarged view of the vibration-proof bearing mechanism 1 of the timepiece 2, and FIG. 3 shows an enlarged one end side portion of the balance of the balance 3 including the vibration-resistant bearing mechanism 1. ing.

機械式時計２では、調速脱進機４はてんぷ３とアンクル６とがんぎ車７とを有する。調速脱進機４を構成するこれらの時計部品３，６，７は地板８によって支持されている。アンクル６は、ハコ先６１で振り座の振り石４４に係合され、入つめ石及び出つめ石（図示せず）でがんぎ車７のがんぎ歯６２に係合される。がんぎ車７はかな部６４で四番車７０に噛合されている。ぜんまい（図示せず）の動力で調速脱進機４のがんぎ車７を動作させる四番車７０は、てんぷ３により規定された速度で間欠回転されるがんぎ車７により所定の回転速度で間欠回転される。   In the mechanical timepiece 2, the speed control escapement 4 includes a balance 3, an ankle 6, and a escape wheel 7. These timepiece parts 3, 6, 7 constituting the governor escapement 4 are supported by a main plate 8. The pallet fork 6 is engaged with the swing stone 44 of the swing seat at the box tip 61, and is engaged with the escape tooth 62 of the escape wheel 7 by an entrance pallet and an exit pallet (not shown). The escape wheel 7 is meshed with the fourth wheel 70 at the kana portion 64. The fourth wheel & pinion 70 for operating the escape wheel 7 of the speed control escapement 4 with the power of the mainspring (not shown) is predetermined by the escape wheel 7 that is intermittently rotated at a speed defined by the balance 3. It is intermittently rotated at the rotation speed.

てんぷ３は、てん真４０と、てんわ５０と、ひげぜんまい５５とを有し、てん真４０は上下（裏蓋側及び文字板側）の小径端部であるほぞ部４１Ｆ，４１Ｒにおいて耐振軸受機構の形態の上下の耐振軸受ないしてんぷ上軸受１Ｆ及びてんぷ下軸受１Ｒにより回転自在に支持されている。ほぞ部４１Ｆ，４１Ｒの端面４５Ｆ，４５Ｒは実際上中心軸線Ｃに対して垂直な平面になっている。従って、ほぞ部の端面ないしほぞ先を凸状に湾曲した面にする場合と比較して、ほぞ丈を正確に形成し得るので、てん真４０の長さや形状を正確に形成し易く、ほぞ先の組付け状態のバラツキが最低限に抑えられ得る。   The balance with hairspring 3 has a balance stem 40, a balance 50, and a hairspring 55, and the balance stem 40 is a vibration-proof bearing at tenon portions 41 </ b> F and 41 </ b> R which are small-diameter end portions on the upper and lower sides (back cover side and dial side). The upper and lower vibration-proof bearings in the form of the mechanism are supported rotatably by the balance upper bearing 1F and balance lower bearing 1R. The end faces 45F and 45R of the tenon portions 41F and 41R are actually planes perpendicular to the central axis C. Accordingly, the tenon length can be accurately formed as compared with the case where the end surface or tenon of the tenon is curved in a convex shape. Therefore, it is easy to accurately form the length and shape of the balance 40, and the tenon tip. The variation in the assembled state can be minimized.

なお、以下において、耐振軸受機構１Ｆ及び１Ｒ並びにその部品ないし要素について、同一の符号の後に添字Ｆ又はＲを付して示す。両者を区別しないとき又は総称するときは添字ＦやＲを省く。   In the following description, the vibration-resistant bearing mechanisms 1F and 1R and the components and elements thereof are indicated by adding the suffix F or R to the same reference numeral. When the two are not distinguished or collectively referred to, the subscripts F and R are omitted.

てんぷ下軸受すなわち下側ないし文字板側の耐振軸受機構１Ｒは地板８に取付けられ、てんぷ上軸受すなわち上側ないし裏蓋側の耐振軸受１Ｆはてんぷ受５を介して地板８に取付けられている。てん真４０は、また、ほぞ部４１Ｆ，４１Ｒよりも中間部側に該ほぞ部４１Ｆ，４１Ｒよりも大径であるけれどもてん真４０の他の部分よりも小径の端部軸部４２Ｆ，４２Ｒを有する。ひげぜんまい５５は、てん真４０の中心軸線（重心軸）Ｃのまわりの渦巻の形態を備え、渦巻の内周側端部においてひげ玉４３に取付けられ、渦巻の外周側端部においてひげ持（図示せず）に取付けられていて、緩急針（図示せず）によりその渦巻（ばね）の実効長が調整される。   The balance bearing 1 </ b> R on the lower balance or the dial side is attached to the main plate 8, and the balance bearing 1 </ b> F on the upper or back cover side is attached to the base plate 8 via the balance 5. The balance stem 40 also has end shafts 42F and 42R which are larger in diameter than the tenon portions 41F and 41R but smaller in diameter than the other portions of the balance stem 40 on the intermediate side of the tenon portions 41F and 41R. Have. The hairspring 55 has a spiral shape around the central axis (center of gravity axis) C of the balance stem 40, is attached to the whisker ball 43 at the inner peripheral side end of the spiral, and has a whisker at the outer peripheral side end of the spiral ( The effective length of the spiral (spring) is adjusted by a slow and quick needle (not shown).

上下の耐振軸受１Ｆ，１Ｒは、実際上同一の構造及び形状を有するので、両者を区別する必要がない限り、耐振軸受機構ないし耐振軸受１として説明する。   Since the upper and lower vibration-resistant bearings 1F and 1R have the same structure and shape in practice, the vibration-resistant bearing mechanism or vibration-resistant bearing 1 will be described unless it is necessary to distinguish between the two.

てんぷ軸受一式ないし耐振軸受一式すなわち耐振軸受機構１は、スラスト軸受として働く広義のセラミック製の受石ないし耐振受石１０と、広義のセラミック製であってジャーナル軸受として働く穴石部１７及び該穴石部１７と一体的な穴石枠部２０を備えた穴石・穴石枠一体構造体９と、受石１０及び穴石・穴石枠一体構造体９を支える金属製の耐振座体３０と、押さえばねないし耐振押さえばね３７とを有する。ここで、「広義のセラミック」は、ルビー等を含めてアルミナやジルコニアの如き金属酸化物のみならず、窒化物や炭化物も含み、天然石及び人工（合成）セラミックの両方を含むものを指す。   A set of balance bearings or a set of anti-vibration bearings, that is, an anti-vibration bearing mechanism 1 includes a ceramic jewel or anti-vibration jewel 10 in a broad sense that functions as a thrust bearing, a hole portion 17 that is made of ceramic in a broad sense and serves as a journal bearing, and the hole stone portion. A rock stone / hole stone frame integrated structure 9 provided with a hole stone frame part 20 integrated with 17, a metal vibration-proof seat 30 that supports the stone 10 and the hole stone / hole stone frame integrated structure 9; A holding spring or vibration-resistant holding spring 37 is provided. Here, “broadly defined ceramic” refers to those including both natural stones and artificial (synthetic) ceramics including not only metal oxides such as alumina and zirconia, including rubies, but also nitrides and carbides.

耐振軸受機構１は、機械式時計２のてんぷ３のてん真４０の両端の小径ほぞ部４１Ｆ，４１Ｒにおいててん真４０を支える。受石１０Ｆ，１０Ｒのほぞ受面ないしスラスト軸受面１１Ｆ，１１Ｒは部分球面（半径の大きな球面の一部）になっている。受石１０Ｆ，１０Ｒのほぞ受面１１Ｆ，１１Ｒは、外に凸状に滑らかに湾曲した曲面（凸面）で回転対称性がある限り、部分球面（半径の大きな球面の一部）でなくてもよい。   The vibration-resistant bearing mechanism 1 supports the balance stem 40 at the small diameter tenon portions 41F and 41R at both ends of the balance 40 of the balance 3 of the mechanical timepiece 2. The tenon receiving surface or thrust bearing surface 11F, 11R of the stones 10F, 10R is a partial spherical surface (a part of a spherical surface having a large radius). The tenon receiving surfaces 11F and 11R of the stones 10F and 10R need not be partial spherical surfaces (parts of spherical surfaces having large radii) as long as they are curved surfaces (convex surfaces) that are smoothly curved outwardly and have rotational symmetry. Good.

受石１０は、上述のような凸レンズのような部分球状の端面１１，１２を有する。端面１１，１２の部分球状面が同一である場合、組付けの際に表裏の識別が不要である。但し、端面１２は、径の異なる部分球面状であっても、部分球状である代わりに、例えば、平面状等他の形状であってもよい。耐振受石１０は、てんぷ３のてん真４０の中心軸線Ｃの延在方向（軸方向）Ａ１，Ａ２（区別しないか総称するときはＡ方向という）の力を受ける。   The stone 10 has partial spherical end faces 11 and 12 like the convex lens as described above. When the partial spherical surfaces of the end surfaces 11 and 12 are the same, it is not necessary to identify the front and back when assembling. However, the end surface 12 may have a partial spherical shape with different diameters, or may have another shape such as a flat shape instead of the partial spherical shape. The anti-vibration stone 10 receives a force in the extending direction (axial direction) A1, A2 of the central axis C of the balance 40 of the balance 3 (A direction when not distinguished or generically referred to as A direction).

耐振座体３０は、小径筒状部３１と、大径筒状部３２と、てん真４０の端部軸部４２が遊嵌される端部軸部受容孔３３ａを備えた端部フランジ状部３３と、接続フランジ状部３４と、傾斜面部３５ａ，３５ｂと、径方向内向き係合部３６とを有する。端部フランジ状部３３は小径フランジ状部３１の一端に形成され、大径筒状部３２は小径筒状部３１よりも大径で、その一端側において接続フランジ状部３４を介して小径筒状部３１の他端につながっている。径方向内向き係合部３６は、大径筒状部３２の他端側に形成されている。端部軸部受容孔３３ａは、てん真４０の端部軸部４２の径よりも多少大きい。傾斜面部３５ａ，３５ｂは、夫々円錐台の外周面の形態であり、典型的には、両傾斜面部３５ａ，３５ｂは、同一の仮想的な円錐台の外周面の一部をなすように同様に且つ直線状に並んで配置されている。傾斜面部３５ａは端部フランジ状部３３の端部軸部受容孔３３ａの一端に形成され、傾斜面部３５ｂは小径筒状部３１のうち接続フランジ状部３４の近傍に形成されている。   The anti-vibration seat 30 includes an end flange-like portion including a small-diameter cylindrical portion 31, a large-diameter cylindrical portion 32, and an end-shaft receiving hole 33a into which the end-shaft portion 42 of the balance stem 40 is loosely fitted. 33, a connecting flange-shaped portion 34, inclined surface portions 35a and 35b, and a radially inward engagement portion 36. The end flange-shaped portion 33 is formed at one end of the small-diameter flange-shaped portion 31, and the large-diameter tubular portion 32 has a larger diameter than the small-diameter tubular-shaped portion 31. The other end of the shape portion 31 is connected. The radially inward engagement portion 36 is formed on the other end side of the large diameter cylindrical portion 32. The end shaft receiving hole 33 a is slightly larger than the diameter of the end shaft 42 of the balance 40. The inclined surface portions 35a and 35b are each in the form of an outer peripheral surface of a truncated cone, and typically both inclined surface portions 35a and 35b are similarly formed so as to form a part of the outer peripheral surface of the same virtual truncated cone. And they are arranged in a straight line. The inclined surface portion 35 a is formed at one end of the end shaft receiving hole 33 a of the end flange-shaped portion 33, and the inclined surface portion 35 b is formed in the vicinity of the connecting flange-shaped portion 34 in the small diameter cylindrical portion 31.

穴石・穴石枠一体構造体９は、概ね円錐台状の中空円錐台状体２１からなり、この中空円錐台状体２１は、円錐台状外周面部２２と、小径側端面部２３と、大径側円筒状部２４と、大径側端面部２５と、円錐台状内周面部２６と、大径側円筒状内面部２７と、ほぞ孔１８と、案内凹部１９とを有する。   The hole stone / hole stone frame integrated structure 9 includes a substantially truncated cone-shaped hollow truncated cone-shaped body 21, which has a truncated cone-shaped outer peripheral surface portion 22, a small-diameter side end surface portion 23, A large-diameter side cylindrical portion 24, a large-diameter side end surface portion 25, a frustoconical inner peripheral surface portion 26, a large-diameter side cylindrical inner surface portion 27, a mortise 18, and a guide recess 19 are provided.

ほぞ孔１８は、円錐台状内周面部２６の小径側に位置し、該ほぞ孔１８に挿通されるてん真４０のほぞ部４１を実際上摺動回転自在に支える。すなわち、ほぞ孔１８を規定する領域２１ａは、ジャーナル軸受として機能する穴石部１７として働く。小径側端面部２３の中心軸線Ｃのまわりに形成された案内凹部１９は、てん真４０の端部軸部４２よりも十分に大きい。但し、端部軸部４２よりも大きく例えば耐振座体３０の端部軸部受容孔３３ａと同程度以上の大きさであって端部軸部４２が遊嵌される程度の径であれば、もう少し小さくてもよい。   The mortise 18 is located on the small diameter side of the frustoconical inner peripheral surface portion 26, and supports the mortise portion 41 of the balance stem 40 inserted through the mortise 18 so as to be slidably rotatable. That is, the region 21a that defines the mortise 18 serves as a hole 17 that functions as a journal bearing. The guide recess 19 formed around the central axis C of the small-diameter side end surface portion 23 is sufficiently larger than the end shaft portion 42 of the balance stem 40. However, if the diameter is larger than the end shaft portion 42, for example, the size of the end shaft portion receiving hole 33a of the anti-vibration seat 30 is equal to or larger than the end shaft portion 42, It may be a little smaller.

円錐台状内周面部２６は、受石１０のほぞ受面１１になっている凸レンズのような部分球状の端面１１の外側部分１１ａに当接して該部分球状端面１１の外側部分１１ａで受石１０を支える。円錐台状内周面部２６は円錐台状外周面部２２よりも頂角の大きい円錐の錐台面になっている。   The frustoconical inner peripheral surface portion 26 abuts on the outer portion 11 a of the partial spherical end surface 11 such as a convex lens forming the tenon receiving surface 11 of the stone 10 and receives the stone at the outer portion 11 a of the partial spherical end surface 11. 10 is supported. The frustoconical inner peripheral surface portion 26 is a conical frustum surface having a larger apex angle than the frustoconical outer peripheral surface portion 22.

円錐台状外周面部２２は、ひとつの円錐台の外周面部からなり、穴石・穴石枠一体構造体９が耐振座体３０内の所定位置に配置された際に、該外周面部の一部をなす傾斜面部２２ａ，２２ｂにおいて耐振座体３０の傾斜面部３５ａ，３５ｂに当接する。従って、穴石・穴石枠一体構造体９は、円錐台状外周面部２２の傾斜面部２２ａ，２２ｂにおいて耐振座体３０の傾斜面部３５ａ，３５ｂに当接して耐振座体３０により支えられる。   The frustoconical outer peripheral surface portion 22 is composed of the outer peripheral surface portion of one truncated cone, and a part of the outer peripheral surface portion is formed when the cobblestone / holestone frame integrated structure 9 is disposed at a predetermined position in the vibration-proof seat body 30. The inclined surface portions 22a and 22b forming the contact with the inclined surface portions 35a and 35b of the vibration-proof seat body 30 are in contact with each other. Therefore, the cobblestone / cavestone frame integrated structure 9 is supported by the vibration-resistant seat body 30 by contacting the inclined surface portions 35 a and 35 b of the vibration-resistant seat body 30 at the inclined surface portions 22 a and 22 b of the frustoconical outer peripheral surface portion 22.

以上において、穴石枠部２０は、円錐台状外周面部２２及び円錐台状内周面部２６を含む領域２１ｂであって、穴石部１７を形成する領域２１ａにつながった領域からなる。   In the above, the hole stone frame portion 20 is a region 21b including the frustoconical outer peripheral surface portion 22 and the frustoconical inner peripheral surface portion 26, and is composed of a region connected to the region 21a forming the hole stone portion 17.

耐振押さえばね３７は、三つ葉のクローバーの如き形状であって、大径部３８から突出した係合部３８ａ，３８ａ，３８ａで耐振座体３０の径方向内向き係合部３６に係合され、径方向内向きに延びたＵ字状係合部３９，３９，３９で受石１０の外側端面１２に係合して、該受石１０を穴石・穴石枠一体構造体９（又は該構造体の穴石枠部２０）の円錐台状内周面部２６に押付ける。これにより、受石１０を介して穴石・穴石枠一体構造体９が円錐台状外周面部２２の傾斜面部２２ａ，２２ｂにおいて耐振座体３０の傾斜面部３５ａ，３５ｂに押付けられる。なお、耐振押さえばね３７は、受石１０を押え得る限り、三つ葉のクローバーの如き形状の代わりに他の形状でもよい。   The anti-vibration spring 37 has a shape like a three-leaf clover, and is engaged with the radially inward engaging portion 36 of the anti-vibration seat 30 by engaging portions 38 a, 38 a, 38 a protruding from the large-diameter portion 38. The U-shaped engaging portions 39, 39, 39 extending inward in the radial direction are engaged with the outer end face 12 of the stone 10 so that the stone 10 is integrated with the stone / hole stone frame integrated structure 9 (or the It is pressed against the frustoconical inner peripheral surface portion 26 of the hole stone frame portion 20) of the structure. Accordingly, the cobblestone / cavestone frame integrated structure 9 is pressed against the inclined surface portions 35 a and 35 b of the vibration-proof seat 30 at the inclined surface portions 22 a and 22 b of the frustoconical outer peripheral surface portion 22 through the stone 10. In addition, as long as the anti-shock spring 37 can hold the stone 10, another shape may be used instead of a shape like a three-leaf clover.

従って、耐振押さえばね３７は耐振受石１０及び穴石・穴石枠一体構造体９を弾性的に保持しててんぷ３の本体への衝撃力を吸収し、衝撃を受けた際の受石１０及び穴石・穴石枠一体構造体９の移動及び復元を可能にする。腕時計の形態の時計２を使用者が手首にはめた状態で使用者の手首の急激な動きにより軸方向の衝撃がてん真４０にかかると、てん真４０に働く軸方向力（衝撃）により受石１０がほぞ受面１１でほぞ４１の端面（ほぞ先）４５からＡ方向の力を受け、受石１０のＡ方向変位を許容して衝撃を吸収してほぞ部４１を保護する。また、使用者の手首の急激な動きにより横方向（軸方向に対して直角な方向）の衝撃がてん真４０にかかっててん真４０が中心軸線Ｃに対して直角な向きに力（衝撃）を受けると、ほぞ部４１からほぞ孔１８に当該向きの力が働くので、押さえばね３７のばね力に抗して穴石・穴石枠一体構造体９が該穴石・穴石枠一体構造体９の円錐台状外周面部２２の斜面部２２ａ，２２ｂと耐振座体３０の斜面部３５ａ，３５ｂとの係合面に沿って変位されて、衝撃が吸収されてほぞ部４１が保護される。いずれの場合も、衝撃がなくなると、押さえばねの力により多少なりとも元の位置に戻る。   Therefore, the vibration-proof presser spring 37 elastically holds the vibration-resistant stone 10 and the cobblestone / holestone frame integrated structure 9 to absorb the impact force to the main body of the balance 3, and the stone 10 when the shock is received. Further, it is possible to move and restore the hole stone / hole stone frame integrated structure 9. When an impact in the axial direction is applied to the balance stem 40 due to a sudden movement of the wrist of the user while the watch 2 in the form of a wrist watch is worn on the wrist, the axial force (impact) acting on the balance stem 40 is received. The stone 10 receives the force in the A direction from the end face (tenon tip) 45 of the tenon 41 at the tenon receiving surface 11 and allows the stone 10 to be displaced in the A direction to absorb the impact and protect the tenon portion 41. In addition, the impact in the lateral direction (perpendicular to the axial direction) is applied to the balance 40 by the sudden movement of the wrist of the user, and the force (impact) in the direction in which the balance 40 is perpendicular to the central axis C. Then, the force in the direction acts from the tenon portion 41 to the tenon hole 18, so that the cobblestone / cavestone frame integrated structure 9 resists the spring force of the holding spring 37. It is displaced along the engagement surface between the inclined surface portions 22a and 22b of the truncated cone-shaped outer peripheral surface portion 22 of the body 9 and the inclined surface portions 35a and 35b of the vibration-proof seat 30, so that the impact is absorbed and the tenon portion 41 is protected. . In either case, when the impact disappears, the original position is restored to some extent by the force of the holding spring.

以上の如く構成されたてんぷ３の耐振軸受機構１では、ジャーナル軸受として働く穴石部１７及び該穴石部１７と一体の穴石枠部２０を備えた穴石・穴石枠一体構造体９が設けられ、穴石部１７と穴石枠部２０とが一体的に構成され一体形成されているので部品点数が低減され得るだけでなく、外周側において耐振座体３０の係合部３６で支持された押さえばね３７が内周側において受石１０を穴石・穴石枠一体構造体９の円錐台状内周面部２６に弾性的に押付けて保持するので、図１０〜図１２等に示した従来の耐振軸受機構１０１の場合のように受石１１０を穴石１１７とは別体の別体の穴石枠１２０を介して位置決めするのではなくて、受石１０を穴石部１７に対して直接位置決めし得るから、受石１０の位置決めないし位置出しが容易且つ確実に行われ得る。すなわち、この耐振軸受機構１では、ほぞ部４１の外周面を穴石部１７で支える穴石・穴石枠一体構造体９に対して受石１０が直接的に当接せしめられてほぞ部４１の端面を支えるので、ほぞ部４１の外周面および端面を支える軸受部分１７，１０の位置決めが正確に行われ得る。   In the vibration-proof bearing mechanism 1 of the balance 3 configured as described above, a cobblestone / cavestone frame integrated structure 9 including a cobblestone portion 17 serving as a journal bearing and a cobblestone frame portion 20 integrated with the cobblestone portion 17 is provided. Since the hole stone portion 17 and the hole stone frame portion 20 are integrally configured and integrally formed, not only the number of parts can be reduced, but also the outer periphery is supported by the engaging portion 36 of the vibration-proof seat 30. Since the holding spring 37 elastically presses and holds the stone 10 on the inner peripheral surface 26 of the truncated stone / hole stone frame integrated structure 9 on the inner peripheral side, the conventional method shown in FIGS. Instead of positioning the receiving stone 110 via a separate hole stone frame 120 separate from the hole stone 117 as in the case of the vibration-proof bearing mechanism 101 of FIG. Since positioning is possible, positioning or positioning of the stone 10 is easy. And it may be reliably performed. That is, in this vibration-resistant bearing mechanism 1, the stone 10 is directly brought into contact with the cobblestone / cavestone frame integrated structure 9 that supports the outer peripheral surface of the mortise portion 41 with the cobblestone portion 17. Since the end surface is supported, the outer peripheral surface of the tenon portion 41 and the bearing portions 17 and 10 that support the end surface can be accurately positioned.

また、この耐振軸受機構１では、ジャーナル軸受として働く穴石部１７及び該穴石部と一体の穴石枠部２０を備えた穴石・穴石枠一体構造体９が設けられ、耐振座体３０が穴石・穴石枠一体構造体９を支えるに構成されるので、通常金属製である耐振座体３０が通常金属製である従来の穴石枠ではなくて石（広義のセラミック）製である穴石・穴石枠一体構造体９に当接してこれを支えることになるから、図１０〜図１２に示したような従来の耐振軸受機構１０１の場合のような耐振座体１３０と穴石枠１２０との間における「金属・金属」間の摺動ではなくて、耐振座体３０と穴石・穴石枠一体構造体９との間における「金属・セラミック」間の摺動になることから、摩擦抵抗が低減され得る。従って、衝撃（外力）により受石の位置がずれても、衝撃（外力）がなくなると受石が元の正規の位置に戻り易く、軸受機構が最適な状態で動作され易い。   Further, in this vibration-resistant bearing mechanism 1, a cobblestone / cavestone frame integrated structure 9 including a cobblestone portion 17 that functions as a journal bearing and a cobblestone frame portion 20 that is integral with the cobblestone portion is provided. Since it is configured to support the cave stone / cave stone frame integrated structure 9, the vibration-proof seat body 30, which is usually made of metal, is made of stone (ceramic in a broad sense) instead of the conventional cobblestone frame that is usually made of metal. Since the rock stone / hole stone frame integrated structure 9 is abutted and supported, the vibration-proof seat 130 and the rock stone as in the case of the conventional vibration-proof bearing mechanism 101 as shown in FIGS. Instead of sliding between the “metal and metal” between the frame 120 and the “metal / ceramic” between the vibration-proof seat 30 and the hole stone / hole stone frame integrated structure 9. From this, the frictional resistance can be reduced. Therefore, even if the position of the stone is shifted due to an impact (external force), if the impact (external force) is lost, the stone is likely to return to the original normal position, and the bearing mechanism is easily operated in an optimum state.

なお、以上の如く構成された本発明の好ましい一実施例の耐振軸受機構１Ｆ，１Ｒを備えた本発明の好ましい一実施例のてんぷ３を有する本発明の好ましい一実施例の機械式時計２において、種々の条件下で、裏蓋側の耐振軸受機構１Ｆが文字板側の耐振軸受機構１Ｒの上に位置する「平姿勢」Ｐ１に時計２が配置されている場合と文字板側の耐振軸受機構１Ｒが裏蓋側の耐振軸受機構１Ｆの上に位置する「裏平姿勢」Ｐ２に時計２が配置されている場合との差異の有無ないし差異の程度について、図４の（ａ）及び（ｂ）、図５の（ａ）及び（ｂ）、並びに図６の（ａ）及び（ｂ）を参照しつつ詳しく説明する。   In the mechanical timepiece 2 of the preferred embodiment of the present invention having the balance 3 of the preferred embodiment of the present invention having the vibration-proof bearing mechanisms 1F and 1R of the preferred embodiment of the present invention configured as described above. Under various conditions, the case 2 is arranged in the “flat position” P1 where the vibration-proof bearing mechanism 1F on the back cover side is positioned on the vibration-proof bearing mechanism 1R on the dial side, and the vibration-proof bearing on the dial side 4 (a) and 4 (a) and FIG. 4 (b) regarding whether or not there is a difference from the case where the timepiece 2 is disposed in the “back flat posture” P2 where the mechanism 1R is positioned on the vibration-proof bearing mechanism 1F on the back cover side. This will be described in detail with reference to (b), (a) and (b) of FIG. 5, and (a) and (b) of FIG.

受石１０Ｆ，１０Ｒが、てんぷ３のてん真４０の中心軸線Ｃに対して実際上垂直に配置され、部分球面状の受面１１Ｆ，１１Ｒが中心軸線Ｃのまわりで回転対称の状態にある場合、時計２が平姿勢Ｐ１を採る場合と裏平姿勢Ｐ２を採る場合とでてんぷ３のてん真４０の支持状態は実際上同一であるので、平姿勢Ｐ１及び裏平姿勢Ｐ２で歩度の差異は実際上ないことは、従来通りである。なお、このてんぷ３では、受石１０Ｆ，１０Ｒのほぞ受面１１Ｆ，１１Ｒが部分球面状であるので、該ほぞ受面１１Ｆ，１１Ｒは、てん真４０のほぞ部４１Ｆ，４１Ｒの端面４５Ｆ，４５Ｒに対して実際上一点で当接するから、てん真４０の回転が安定し易い。   When the receiving stones 10F and 10R are arranged substantially perpendicular to the central axis C of the balance 40 of the balance 3 and the partially spherical receiving surfaces 11F and 11R are rotationally symmetrical around the central axis C Since the balance state of the balance 3 of the balance 3 is practically the same when the watch 2 takes the flat posture P1 and when it takes the back flat posture P2, the difference in rate between the flat posture P1 and the back flat posture P2 is as follows. What is not practical is as usual. In the balance 3, the tenon receiving surfaces 11F and 11R of the stones 10F and 10R are partially spherical, and the tenon receiving surfaces 11F and 11R are the end surfaces 45F and 45R of the tenon portions 41F and 41R of the balance stem 40. However, the rotation of the balance stem 40 is likely to be stabilized.

図４の（ａ）及び（ｂ）に示したように、てんぷ受５側ないし裏蓋側の受石１０Ｆが少し（例えば１度程度）傾いた状態で押さえばね３７Ｆによって穴石・穴石枠一体構造体９Ｆに取付けられた状態Ｓ１では、厳密に言えば、図４の（ａ）に示したように時計２が平姿勢Ｐ１を採る場合と、図４の（ｂ）に示したように時計２が裏平姿勢Ｐ２を採る場合とでは、てんぷ３の状態が多少なりとも異なる状況になる。受石１０Ｆの傾きは、典型的には、穴石・穴石枠一体構造体９Ｆが傾斜面２２ａ，２２ｂにおいて耐振座体３０Ｆの傾斜面３５ａ，３５ｂに対してズレて耐振座体３０Ｆに対して傾いた場合に生じる。なお、このこと（時計が平姿勢を採る場合と裏平姿勢を採る場合とでてんぷの状態が異なること）自体は、従来の耐振軸受機構１０１Ｆ，１０１Ｒを備えた従来のてんぷ１０３を有する従来の時計１０２について図１４の（ａ）及び（ｂ）に関連して説明したのと同様であるけれども、平姿勢の場合と裏平姿勢の場合とにおけるてんぷの状態の差異の程度が、時計２と従来の時計１０２とでは異なる。   As shown in FIGS. 4 (a) and 4 (b), the stone holder 10F on the side of the balance 5 or the back cover side is tilted slightly (for example, about 1 degree) by the holding spring 37F, and the stone or hole frame is held by the holding spring 37F. Strictly speaking, in the state S1 attached to the integrated structure 9F, as shown in FIG. 4A, the timepiece 2 takes the flat posture P1, and as shown in FIG. 4B. When the timepiece 2 takes the back flat posture P2, the balance 3 is in a slightly different state. The inclination of the stone 10F is typically such that the cave stone / hole stone frame integrated structure 9F is shifted from the inclined surfaces 35a, 35b of the vibration-resistant seat 30F in the inclined surfaces 22a, 22b with respect to the vibration-resistant seat 30F. It occurs when it is tilted. Note that this (the balance of the balance is different between the case where the watch takes a flat posture and the case where the watch takes a flat back posture) itself is a conventional balance having a conventional balance 103 having vibration-proof bearing mechanisms 101F and 101R. Although the timepiece 102 is the same as that described with reference to FIGS. 14A and 14B, the difference in the balance state between the flat posture and the back flat posture is the same as that of the watch 2. It differs from the conventional watch 102.

すなわち、時計２において、てんぷ受５側の受石１０Ｆが傾いて取付けられた状態Ｓ１にある場合において図４の（ａ）に示したように文字板側の耐振軸受機構１Ｒが下側に位置していて文字板側の受石１０Ｒがそのほぞ受面１１Ｒでてん真１４０のほぞ４１Ｒの端面４５Ｒを受ける平姿勢Ｐ１では、てん真４０が、下側に位置するほぞ部４１Ｒの端面４５Ｒのうち中心軸線Ｃの通る位置Ｃ０Ｒにおいてその下側に位置する文字板側の耐振軸受機構１Ｒの受石１０Ｒの部分球面状のほぞ受面１１Ｒに当接し、該当接位置Ｃ０Ｒを中心に中心軸線Ｃのまわりで回転されることは図１４の（ａ）の場合と実際上同じである。すなわち、この範囲では、てんぷ受５側ないし裏蓋側の受石１０Ｆが少し（例えば１度程度）傾いた状態で押さえばね３７Ｆによって穴石・穴石枠一体構造体９Ｆに取付けられていることによる影響が現れないことは、図１４の（ａ）の場合と実際上同じである。但し、厳密に言えば、この時計２では受石１０Ｒのほぞ受面１１Ｒが凸状に湾曲しているので、中心軸線Ｃに一致するところＣ０Ｒが確実に回転中心になる点で時計１０２の場合と異なり得る。   That is, in the timepiece 2, when the stone holder 10F on the balance holder 5 side is in the tilted state S1, the vibration-proof bearing mechanism 1R on the dial side is positioned on the lower side as shown in FIG. In the flat posture P1 in which the receiving stone 10R on the dial side receives the end surface 45R of the tenon 41R of the balance stem 140 at the tenon receiving surface 11R, the balance stem 40 of the end surface 45R of the tenon portion 41R located below is provided. Among them, the center axis C is in contact with the partially spherical tenon receiving surface 11R of the stone 10R of the anti-vibration bearing mechanism 1R on the dial side located at the lower position C0R through which the central axis C passes. Is rotated in the same manner as in FIG. 14A. That is, in this range, the stone holder 10F on the balance holder 5 side or the back cover side is attached to the cobblestone / cavestone frame integrated structure 9F by the holding spring 37F in a state where it is slightly inclined (for example, about 1 degree). It is practically the same as in the case of FIG. Strictly speaking, however, in the timepiece 2, the tenon receiving surface 11R of the stone 10R is curved in a convex shape. Therefore, in the case of the timepiece 102, the C0R surely becomes the center of rotation when it coincides with the central axis C. And can be different.

一方、時計２が反転されて、図４の（ｂ）に示したようにてんぷ受５側（裏蓋側）の耐振軸受機構１Ｆが下側に位置していててんぷ受５側の受石１０Ｆがそのほぞ受面１１Ｆでてん真４０のほぞ４１Ｆの端面４５Ｆを受ける裏平姿勢Ｐ２では、中心軸線Ｃの近傍におけるほぞ受面１１Ｆの輪郭に多少のズレが生じるとしても、図４の（ｂ）において想像線で示した通り、ほぞ受面１１Ｆの輪郭は１度程度の傾きが生じる前と概ね同様になる。特に、受石１０Ｆの概ね１度の傾きに伴いほぞ受面１１Ｆのうち接線が中心軸線Ｃに対して垂直になる部位ＣａＶは受面１１Ｆが中心軸線Ｃと交わる位置にほとんど一致する。すなわち、受石１０Ｆの傾きが耐振座体３０に対する穴石・穴石枠一体構造体９Ｆのズレ（面３５ａ，３５ｂに対する面２２ａ，２２ｂのズレ）によって生じるとすると、１度の回転に応じてほぞ受面１１Ｆが１度だけ概ね周方向に回転するとしても、ほぞ受面１１Ｆのうち中心軸線Ｃが交わる部位Ｃ０Ｆにおける接平面の向きは概ね一定に保たれ得るから、結果的にはほぞ受面１１Ｆのうち接平面が中心軸線Ｃに対して垂直になる部位ＣａＶは受面１１Ｆが中心軸線Ｃと交わる位置Ｃ０Ｆからほとんどずれない。従って、てん真４０は、下側に位置するほぞ部４１Ｆの端面４５Ｆのうち中心軸線Ｃの通る位置の近傍の点ＣａＶにおいてその下側に位置する文字板側の耐振軸受機構１Ｆの受石１０Ｆの部分球面状のほぞ受面１１Ｆと当接し、該位置ＣａＶを中心として中心軸線Ｃのまわりで回転される。なお、ほぞ受面１１Ｆが穴石・穴石枠一体構造体９Ｆの円錐台状内周面部２６に沿ってずれても状況は同じである。   On the other hand, the timepiece 2 is inverted, and the anti-vibration bearing mechanism 1F on the balance 5 side (back cover side) is positioned on the lower side as shown in FIG. In the back flat posture P2 where the tenon receiving surface 11F receives the end face 45F of the tenon 41F of the balance 40, even if a slight deviation occurs in the outline of the tenon receiving surface 11F in the vicinity of the central axis C, FIG. ), The contour of the tenon receiving surface 11F is substantially the same as before the inclination of about 1 degree occurs. Particularly, a portion CaV in which the tangent line is perpendicular to the central axis C in the tenon receiving surface 11F with the inclination of the receiving stone 10F approximately 1 degree almost coincides with the position where the receiving surface 11F intersects the central axis C. That is, if the inclination of the stone 10F is caused by the shift of the cobblestone / cavestone frame integrated structure 9F with respect to the vibration proof seat 30 (the shift of the surfaces 22a and 22b with respect to the surfaces 35a and 35b), according to one rotation. Even if the tenon receiving surface 11F rotates approximately in the circumferential direction by 1 degree, the direction of the tangential plane at the portion C0F where the central axis C intersects in the tenon receiving surface 11F can be kept substantially constant. A portion CaV of the surface 11F where the tangential plane is perpendicular to the central axis C is hardly displaced from a position C0F where the receiving surface 11F intersects the central axis C. Accordingly, the balance stem 40 has the stone 10F of the vibration-proof bearing mechanism 1F on the dial side located below the point CaV in the vicinity of the position through which the central axis C passes in the end face 45F of the tenon portion 41F located on the lower side. Is contacted with the partially spherical tenon receiving surface 11F and rotated about the center axis C around the position CaV. The situation is the same even if the tenon receiving surface 11F is displaced along the truncated cone-shaped inner peripheral surface portion 26 of the cave stone / cave stone frame integrated structure 9F.

すなわち、部分球状の凸状湾曲ほぞ受面１１Ｆ，１１Ｒを備えた耐振軸受機構１Ｆ，１Ｒを具備するてんぷ３を有する機械式時計２では、図４の（ａ）及び（ｂ）に示したように、てんぷ受５側ないし裏蓋側の受石１０Ｆが少し（例えば１度程度）傾いた状態で押さえばね３７Ｆによって穴石・穴石枠一体構造体９Ｆに取付けられた状態Ｓ１では、図４の（ａ）に示したように時計２が平姿勢Ｐ１を採る場合と、図４の（ｂ）に示したように時計２が裏平姿勢Ｐ２を採る場合とでは、厳密にはてんぷ３の状態が多少なりとも異なる状況になるけれども、実際には、裏平姿勢Ｐ２を採った場合でも、耐振軸受機構１Ｆの部分球状の凸状湾曲ほぞ受面１１Ｆがてん真４０のほぞ部１Ｆの端面４５Ｆに当接する部位は、概ね中心軸線Ｃ上の位置ＣａＶにある。従って、平姿勢Ｐ１及び裏平姿勢Ｐ２で、てんぷ３は実際上同様に動作し得、歩度の差異が、図１４の（ａ）及び（ｂ）の場合よりもかなり小さくなる。   That is, in the mechanical timepiece 2 having the balance 3 having the vibration-proof bearing mechanisms 1F and 1R having the partially spherical convex curved tenon receiving surfaces 11F and 11R, as shown in FIGS. 4 (a) and 4 (b). Further, in the state S1 in which the stone holder 10F on the balance holder 5 side or the back cover side is slightly inclined (for example, about 1 degree) and is attached to the stone stone / hole stone frame integrated structure 9F by the holding spring 37F, FIG. Strictly speaking, when the watch 2 takes the flat posture P1 as shown in FIG. 4A and when the watch 2 takes the back flat posture P2 as shown in FIG. Although the state is somewhat different, actually, even when the back flat posture P2 is adopted, the partial spherical convex curved tenon receiving surface 11F of the vibration-proof bearing mechanism 1F is the end surface of the tenon portion 1F of the balance stem 40. The part that abuts on 45F is approximately the position Ca on the central axis C. Located in. Therefore, in the flat posture P1 and the back flat posture P2, the balance with hairspring 3 can actually operate in the same manner, and the difference in the rate is considerably smaller than in the cases of (a) and (b) of FIG.

一方、図５の（ａ）及び（ｂ）（特に図５の（ｂ））に示したように、裏平姿勢Ｐ２において、てん真４０の中心軸線Ｃが多少（例えば、０．２度程度）傾く場合Ｓ２、てん真４０のほぞ部４１Ｆの端面４５Ｆが、てん真４０の中心軸線Ｃから多少離れた部位Ｃｂにおいてその下側に位置するてんぷ受５側の耐振軸受機構１Ｆの受石１０Ｆのほぞ受面１１Ｆと当接する。ここで、部位Ｃｂは、受石１０Ｆのほぞ受面１１Ｆの接平面が、傾斜した中心軸線Ｃを有するてん真４０のほぞ部４１Ｆの端面４５Ｆと平行になる部位（一致し得る部位）に相当する。   On the other hand, as shown in FIGS. 5A and 5B (particularly, FIG. 5B), the center axis C of the balance stem 40 is slightly (for example, about 0.2 degrees) in the back flat posture P2. ) When tilted S2, the stone 10F of the anti-vibration bearing mechanism 1F on the side of the balance 5 that the end face 45F of the tenon portion 41F of the balance 40 is positioned below the portion Cb slightly away from the central axis C of the balance 40 The tenon receiving surface 11F abuts. Here, the part Cb corresponds to a part where the tangent plane of the tenon receiving surface 11F of the jewel 10F is parallel to the end face 45F of the tenon portion 41F of the balance stem 40 having the inclined central axis C (part that can coincide). To do.

従って、てん真４０の回転中心Ｃｂは、該てん真４０の中心軸線Ｃとは異なり該中心軸線Ｃの通る部位からΔｒ（ほぞ部４１の半径の数分の１で１０μｍ程度である）離れたところに位置し、てん真４０は点Ｃｂを中心に回転することになる。   Accordingly, the rotation center Cb of the balance stem 40 is different from the central axis C of the balance stem 40 by Δr (about 10 μm as a fraction of the radius of the tenon portion 41) from the portion through which the center axis C passes. However, the balance stem 40 rotates around the point Cb.

この状態Ｓ２にある場合には、時計２が平姿勢Ｐ１を採るときと裏平姿勢Ｐ２を採るときとで、てんぷ４の動作が実際上異なり、多少の歩度の差が生じるのを避け難い。但し、裏平姿勢Ｐ２を採るときの中心位置Ｃｂの中心Ｃからのズレはてん真４０のほぞ部４１の半径の数分の１程度になる点で、てん真４０のほぞ部４１の半径程度のズレが生じる（図１５の（ｂ））従来の時計１０２と比較して、裏平姿勢Ｐ２と平姿勢Ｐ１との歩度の差異が大幅に低減され得る。   In this state S2, the operation of the balance 4 is actually different between the timepiece 2 taking the flat posture P1 and the back flat posture P2, and it is difficult to avoid a slight difference in rate. However, the deviation from the center C of the center position Cb when taking the back flat posture P2 is about a fraction of the radius of the tenon portion 41 of the balance stem 40, and is about the radius of the tenon portion 41 of the balance stem 40. As compared with the conventional watch 102, the difference in the rate between the back flat posture P2 and the flat posture P1 can be greatly reduced.

なお、てん真４０の中心軸線Ｃが傾くのは、種々の原因がある。すなわち、てん真４０の中心軸線Ｃが傾く現象が生じる場合には、時計２の姿勢にかかわらず、従来の時計１０２と比較して、歩度に大きな差異が生じる虞れを低減させ得ることになる。そのような例としては、例えば、てんわ５０の重量のバランスが崩れていててんわ５０が傾く場合がある。また、厳密に言えば、例えば、ひげぜんまい５５の渦巻きが巻かれたりほどけたりする際にひげぜんまい５５からひげ玉４３を介しててん真４０にかかる力の故に、てん真４０の中心軸線Ｃの軸が多少なりとも傾くこともあり得る。そのような場合であっても、この耐振軸受機構１，１をてん真４０の両端に備えたてんぷ３では、従来のてんぷ１０２ようにほぞ受面１１１が平面である場合と異なってほぞ受面１１が部分球面であるので、てん真４０のほぞ部４１の端面４５の側縁ではなくて該端面４５のうち中心軸線Ｃの近傍の部位がほぞ受面１１の対応する傾斜の接平面の部位と当接し得る。従って、てん真４０の回転の中心が中心軸線Ｃからずれる程度が最低限に抑えられ得る。   The central axis C of the balance stem 40 is inclined for various causes. That is, when a phenomenon occurs in which the central axis C of the balance stem 40 is tilted, it is possible to reduce the possibility of a large difference in rate compared to the conventional timepiece 102 regardless of the position of the timepiece 2. . As such an example, for example, there is a case where the balance of the weight of the balance 50 is broken and the balance 50 is inclined. Strictly speaking, for example, when the spiral of the hairspring 55 is wound or unwound, the force applied to the hairspring 40 from the hairspring 55 through the hairball 43 is caused by the central axis C of the spring 40. The axis can be tilted somewhat. Even in such a case, in the balance 3 provided with the vibration-proof bearing mechanisms 1 and 1 at both ends of the balance stem 40, unlike the conventional balance 102, the tenon receiving surface 111 is a flat tenon receiving surface. Since 11 is a partial spherical surface, a portion in the vicinity of the center axis C of the end surface 45 is not a side edge of the end surface 45 of the tenon portion 41 of the balance 40, but a portion of the tenon receiving surface 11 corresponding to the inclined tangential plane Can abut. Therefore, the extent to which the center of rotation of the balance stem 40 deviates from the central axis C can be minimized.

また、図６の（ａ）及び（ｂ）に示したように、てんぷ受５側のほぞ４１Ｆの端面４５Ｆがてん真４０の中心軸線Ｃに対して傾斜している状態Ｓ３では、裏平姿勢Ｐ２において、傾斜した端面４５Ｆは、てんぷ受５側の耐振軸受機構１Ｆの受石１０Ｆのほぞ受面１１Ｆの傾斜が端面４５Ｆの傾斜に一致する部位Ｃｄで、受石１０Ｆのほぞ受面１１Ｆと当接する。この部位Ｃｄは、図５で示した部位Ｃｂと概ね一致する部位である。   Further, as shown in FIGS. 6A and 6B, in the state S3 where the end face 45F of the tenon 41F on the balance 5 side is inclined with respect to the central axis C of the balance 40, the back flat posture In P2, the inclined end surface 45F is a portion Cd where the inclination of the tenon receiving surface 11F of the stone receiving surface 10F of the vibration-proof bearing mechanism 1F on the balance receiving 5 side coincides with the inclination of the end surface 45F, and the tenon receiving surface 11F of the receiving stone 10F. Abut. This portion Cd is a portion that substantially matches the portion Cb shown in FIG.

すなわち、この状態Ｓ３にある場合にも、時計０２が平姿勢Ｐ１を採るときと裏平姿勢Ｐ２を採るときとで、てんぷ１０３の動作が異なるけれども、その差異は、図５の（ａ）及び（ｂ）の場合と同様であって、図１６の（ａ）及び（ｂ）に示した従来の時計１０２と比較して、裏平姿勢Ｐ２と平姿勢Ｐ１との歩度の差異が大幅に低減され得る。   That is, even in this state S3, the operation of the balance with hairspring 103 is different between the time when the watch 02 takes the flat posture P1 and the time when the watch 02 takes the back flat posture P2. This is the same as in the case of (b), and the rate difference between the back flat posture P2 and the flat posture P1 is significantly reduced as compared with the conventional timepiece 102 shown in FIGS. 16 (a) and 16 (b). Can be done.

従って、てん真４０の回転中心Ｃｄは、該てん真４０の中心軸線Ｃとは異なり該中心軸線Ｃから概ねΔｒ（ほぞ部４１の半径の数分の１で１０μｍ程度である）離れた点Ｃｄを中心に回転することになる。   Therefore, the rotation center Cd of the balance stem 40 is different from the center axis C of the balance stem 40, and is approximately a point Cd away from the center axis C by Δr (a fraction of the radius of the tenon portion 41 is about 10 μm). Will rotate around.

なお、以上の如く、時計２では、受石１０の受面１１が部分球状に形成されているので、種々の傾き等があっても、回転中心がてん真４０の中心Ｃからズレるズレ量が小さくなるから、平姿勢Ｐ１や裏平姿勢Ｐ２等の姿勢による時計２の歩度の変動が最低限に抑えられ得る。   As described above, in the timepiece 2, since the receiving surface 11 of the stone 10 is formed in a partial spherical shape, even if there are various inclinations or the like, the amount of deviation in which the center of rotation deviates from the center C of the balance 40 is large. Therefore, the fluctuation in the rate of the timepiece 2 due to the postures such as the flat posture P1 and the back flat posture P2 can be minimized.

また、この時計２では、部分球状に形成されるのは、てん真４０のほぞ部４１Ｆ，４１Ｒの端面４５Ｆ，４５Ｒではなくて受石１０のほぞ受面１１Ｆ，１１Ｒであってその部分球面の径が大きいから、てん真４０の長さその他の量が大きく変動する虞れも少ない。   Further, in this timepiece 2, the part-spherical shape is not the end faces 45F, 45R of the tenon portions 41F, 41R of the balance stem 40 but the tenon-receiving faces 11F, 11R of the stone 10 and the partial spherical surface Since the diameter is large, the length of the balance 40 and other amounts are less likely to vary greatly.

受石が部分球状のほぞ受面を備える代わりに、図７の（ａ）及び（ｂ）並びに図８に示したように、受石１０Ａが球体１３からなっていてもよい。図７の（ａ）及び（ｂ）並びに図８に示した耐振軸受構造体１Ａを備えたてんぷ３Ａにおいて、図１から図３に示した耐振軸受構造体１を備えたてんぷ３の要素と同一の要素には同一の符号が付され、対応するけれども異なるところのある要素には最後に添字Ａが付されている。なお、裏蓋側ないしてんぷ受側であることを示す添字「Ｆ」及び文字板側であることを示す添字「Ｒ」がある場合には、該添字Ｆ，Ｒの前に添字Ａが付される。   Instead of the stone receiving surface having a partially spherical tenon receiving surface, the stone receiving stone 10 </ b> A may be composed of a spherical body 13 as shown in FIGS. 7A and 7B and FIG. 8. The balance 3A provided with the vibration-proof bearing structure 1A shown in FIGS. 7A and 7B and FIG. 8 is the same as the elements of the balance 3 provided with the vibration-proof bearing structure 1 shown in FIGS. The same reference numerals are given to the elements of, and the subscript A is attached to the elements that correspond but are different. In addition, when there is a subscript “F” indicating that it is on the back cover side or the hair-sheet receiving side and a subscript “R” indicating that it is on the dial side, the subscript A is added before the subscripts F and R. The

てんぷ３Ａの耐振軸受構造体１Ａでは、受石１０Ａが球体１３からなるので、受石１０Ａの寸法精度が高められ易い。また、てんぷ３Ａの耐振軸受構造体１Ａでは、受石１０Ａが球体１３からなるが故に時計２Ａの厚さ方向のサイズが大きくなるので、耐振座体３０Ａは、耐振座体３０の大径筒状部３２よりも大きい軸方向長さを備えた大径筒状部３２Ａを有する点を除いて、耐振座体３０と実際上同様に構成されている。   In the vibration-proof bearing structure 1A of the balance with hairspring 3A, the jewel 10A is composed of the spheres 13, so that the dimensional accuracy of the jewel 10A is easily increased. Further, in the vibration-proof bearing structure 1A of the balance with hairspring 3A, the size of the timepiece 2A in the thickness direction is large because the stone 10A is composed of the spherical body 13, so the vibration-proof seat 30A is a large-diameter cylindrical shape of the vibration-proof seat 30. Except for having a large-diameter cylindrical portion 32A having an axial length larger than that of the portion 32, it is configured in substantially the same manner as the vibration-proof seat body 30.

また、耐振軸受構造体１Ａでは、受石１０Ａが球体１３からなり、時計２Ａの厚さ方向のサイズが大きくなるので、穴石・穴石枠構造体９Ａは、穴石・穴石枠構造体９の大径側円筒状内面部２７及び円錐台状内周面部２６よりも深い（軸方向Ａに沿ったサイズの大きい）大径側円筒状内面部２７Ａ及び円錐台状内周面部２６Ａを有する点、並びに受石１０Ａが球体１３からなるが故に径方向サイズが小さくなって内径がより小さくなり穴石・穴石枠構造体９Ａの壁部が厚い点を除いて、穴石・穴石枠構造体９と実際上同様に構成されている。   Further, in the vibration-proof bearing structure 1A, the stone 10A is composed of the sphere 13 and the size of the timepiece 2A in the thickness direction is increased. Therefore, the cobblestone / cavestone frame structure 9A is a cobblestone / cavestone frame structure. 9 has a large-diameter cylindrical inner surface portion 27A and a frustoconical inner peripheral surface portion 26A that are deeper (larger in size along the axial direction A) than the large-diameter cylindrical inner surface portion 27 and the frustoconical inner peripheral surface portion 26. Except for the point and the stone 10A consisting of the spheres 13, the radial size is reduced, the inner diameter is smaller, and the wall of the cobblestone / cavestone frame structure 9A is thicker. The structure is substantially the same as that of the structure 9.

なお、押さえばね３７Ａは外周側係合部３８ａ，３８ａ，３８ａで耐振座体３０Ａの係合部３６に係合し、内周側のＵ字状係合部３９，３９，３９で球体１３の形態の受石１０Ａのうちほぞ受面１１Ａとは直径方向の反対側に位置する領域１２Ａを押圧する。   The holding spring 37A is engaged with the engaging portion 36 of the vibration-proof seat 30A at the outer peripheral side engaging portions 38a, 38a, 38a, and the spherical body 13 is connected at the inner U-shaped engaging portions 39, 39, 39. The region 12A located on the opposite side of the diametrical direction from the tenon receiving surface 11A of the shaped stone 10A is pressed.

以上の如く構成された耐振軸受構造体１Ａでは、図８に示したように、てんぷ３の
てん真４０のほぞ部４１が穴石１７Ａのほぞ孔１８に嵌合されてジャーナル軸受として働く該ほぞ孔１８の周面で支持され、ほぞ部４１の端面４５が球体１３の形態でスラスト軸受けとして働く受石１０Ａのほぞ受面部１１Ａに当接して該ほぞ受面部１１Ａで支持される。 In the vibration-proof bearing structure 1A configured as described above, as shown in FIG. 8, the tenon portion 41 of the balance 40 of the balance 3 is fitted into the tenon hole 18 of the hole 17A and serves as a journal bearing. The end surface 45 of the tenon portion 41 is supported by the peripheral surface of the hole 18 and is in contact with the tenon receiving surface portion 11A of the receiving stone 10A that functions as a thrust bearing in the form of the sphere 13 and is supported by the tenon receiving surface portion 11A.

図９は、図７の耐振軸受機構を有する図８のてんぷにおいて種々の条件下での回転中心の位置ズレの程度を示したものであり、図９の（ａ）はてん真及び受石が所定の状態にある基準の場合を示したものである。この場合、てん真４０のほぞ部４１がその端面４５の位置Ｃ０で球体１３の形態の受石１０Ａのほぞ受面１１Ａに当接する。この位置は、図４のＣ０Ｒに対応する位置であって、てん真４０の中心軸線Ｃ上にある。   FIG. 9 shows the degree of misalignment of the center of rotation under various conditions in the balance with the vibration-proof bearing mechanism of FIG. 7, and FIG. The case of the reference | standard in a predetermined state is shown. In this case, the tenon portion 41 of the balance stem 40 contacts the tenon receiving surface 11A of the stone 10A in the form of the sphere 13 at the position C0 of the end surface 45 thereof. This position corresponds to C0R in FIG. 4 and is on the central axis C of the balance stem 40.

図９の（ｂ）は受石が傾いた状態にある場合を示したもので、球体１３の形態の受石１０Ａが少し（例えば、１度程度）傾くとしても、受石１０Ａは球体１３の環状領域１４で穴石・穴石枠構造体９Ａの円錐台状内周面部２６Ａで支持されているので、当該回転によっては、球体１３の形態の受石１０Ａとてん真４０のほぞ部４１の端面４５との当接位置Ｃｆは変わらず、実際上位置Ｃ０に保たれる。従って、受石１０Ａが傾いても、平姿勢Ｐ１であっても裏平姿勢Ｐ２であってもてんぷ３Ａが実際上同様に動作され得るから、姿勢が歩度に与える影響を最低限に抑え得る。   FIG. 9B shows a case where the stone is tilted. Even if the stone 10A in the form of the sphere 13 is slightly inclined (for example, about 1 degree), the stone 10A is Since the annular region 14 is supported by the frustoconical inner peripheral surface portion 26A of the cobblestone / holestone frame structure 9A, depending on the rotation, the stone 10A in the form of the sphere 13 and the tenon portion 41 of the balance stem 40 The contact position Cf with the end face 45 does not change and is actually maintained at the upper position C0. Therefore, even if the stone 10A is tilted, the balance 3A can be operated in the same manner regardless of whether it is in the flat posture P1 or the back flat posture P2, so that the influence of the posture on the rate can be minimized.

図９の（ｃ）はてん真が傾いた状態にある場合を示したもので、てん真４０の傾斜に伴いほぞ部４１の端面４５が傾く。しかしながら、この耐振軸受機構１Ａを備えたてんぷ３Ａでは、耐振軸受機構１Ａの受石１０Ａが比較的小径の球体１３からなるので、当接位置が中心軸線Ｃ上の位置Ｃ０からわずかにずれるだけで接平面の傾きが大きく変わるから、多少傾斜したてん真４０のほぞ部４１の端面４５と丁度当接する部位が中心軸線Ｃから僅かに離れたところＣｇになる。その結果、てん真４０の傾きがてんぷ３Ａの回転に与える影響が最低限に抑えられ得る。   FIG. 9C shows the case where the balance stem is tilted, and the end face 45 of the tenon portion 41 is tilted as the balance 40 is tilted. However, in the balance 3A provided with the vibration-resistant bearing mechanism 1A, the stone 10A of the vibration-resistant bearing mechanism 1A is composed of the sphere 13 having a relatively small diameter, so that the contact position is slightly shifted from the position C0 on the central axis C. Since the inclination of the tangential plane changes greatly, the portion that just contacts the end face 45 of the tenon portion 41 of the slightly bent stem 40 becomes Cg when slightly separated from the central axis C. As a result, the influence of the inclination of the balance 40 on the rotation of the balance 3A can be minimized.

以上においては、従来の時計部品との関連がわかり易いように、従来の穴石と穴石枠とが一体成形されたもの９，９Ａを穴石・穴石枠一体構造体と称したけれども、その代わりに、以上のすべてにおいて、「穴石・穴石枠一体構造体」と称する代わりに「穴石構造体」と称してもよい。その場合、「穴石構造体」とは、従来の穴石として機能するのみでなく従来の穴石枠としても機能し得るものを指すことになる。   In the above, in order to make it easy to understand the relation with the conventional watch parts, the conventional stone 9 and the stone stone frame 9 and 9A integrally formed are called stone stone and stone stone frame integrated structure. Instead, in all of the above, it may be referred to as a “hole stone structure” instead of a “hole stone / hole stone frame integrated structure”. In that case, the “hole stone structure” refers to one that can function not only as a conventional hole stone but also as a conventional hole stone frame.

１，１Ａ 耐振軸受機構
２，２Ａ 機械式時計
３，３Ａ てんぷ
４ 調速脱進機
５ てんぷ受
６ アンクル
７ がんぎ車
８ 地板
９，９Ａ 穴石・穴石枠一体構造体
１０，１０Ｆ，１０Ｒ，１０Ａ 耐振受石
１１ 部分球状端面（ほぞ受面）
１１ａ 側部分
１１Ｆ，１１Ｒ，１１Ａ ほぞ受面
１２ 端面
１２Ａ 領域
１３ 球体
１４ 球状面部
１７，１７Ｆ，１７Ｒ，１７Ａ 穴石部
１７ａ 外周面
１８ ほぞ孔
１９ 案内用凹部
２０，２０Ｆ，２０Ｒ，２０Ａ 穴石枠部
２１ 中空円錐台状体
２１ａ 領域（穴石部形成領域）
２１ｂ 領域（穴石枠部形成領域）
２２ 円錐台状外周面部
２２ａ，２２ｂ 傾斜面部
２３ 小径側端面部
２４ 大径側円筒状部
２５ 大径側端面部
２６ 円錐台状内周面部
２７ 大径側円筒状内面部
３０，３０Ｆ，３０Ｒ，３０Ａ 耐振座体
３１ 小径筒状部
３２，３２Ａ 大径筒状部
３３ 端部フランジ状部
３３ａ 端部軸部受容穴
３４ 接続フランジ状部
３５ａ，３５ｂ 傾斜面部
３６ 径方向内向き係合部
３７，３７Ｆ，３７Ｒ，３７Ａ 耐振押さえばね
３８ 大径部
３８ａ 係合部
３９ Ｕ字状係合部
４０ てん真
４１，４１Ｆ，４１Ｒ ほぞ部
４２，４２Ｆ，４２Ｒ 端部軸部
４３ ひげ玉
４４ 振り石
４５，４５Ｆ，４５Ｒ 端面
５０ てんわ
５５ ひげぜんまい
６１ ハコ先
６２ がんぎ歯
６４ かな部
７０ 四番車
Ａ，Ａ１，Ａ２ 方向
Ｃ てん真の中心軸線
Ｃ０Ｒ 接触位置
ＣａＶ 受石が傾いた際にほぞ受面が中心軸線に対して垂直になる部位
Ｃｂ てん真のほぞ部の端面が耐振軸受機構の受石のほぞ受面と当接する部位（回転中心）
Ｃｄ ほぞ部の傾斜した端面が受石のほぞ受面に当接する部位
Ｃｆ，Ｃｇ 球体の形態の受石がほぞ部の端面と当接する部位
Ｐ１ 平姿勢
Ｐ２ 裏平姿勢
Ｓ１ てんぷ受側の受石が傾いて取付けられた状態
Ｓ２ てん真の中心軸線が傾いた状態
Ｓ３ ほぞの端面がてん真の中心軸線に対して傾斜している状態
Δｒ 中心軸線から回転中心となる部位までの距離 DESCRIPTION OF SYMBOLS 1,1A Anti-vibration bearing mechanism 2,2A Mechanical timepiece 3,3A Balance 4 Control escapement 5 Balance holder 6 Ankle 7 Spur wheel 8 Ground plate 9, 9A Core stone / hole stone frame integrated structure 10, 10F, 10R, 10A Anti-vibration stone 11 Partially spherical end face (tenon receiving face)
11a side portion 11F, 11R, 11A tenon receiving surface 12 end surface 12A region 13 sphere 14 spherical surface portion 17, 17F, 17R, 17A hole stone portion 17a outer peripheral surface 18 tenon hole 19 guiding recess 20, 20F, 20R, 20A hole stone frame portion 21 hollow frustum 21a area (hole formation part)
21b area (hole stone frame forming area)
22 frustoconical outer peripheral surface portions 22a, 22b inclined surface portion 23 small diameter side end surface portion 24 large diameter side cylindrical portion 25 large diameter side end surface portion 26 frustoconical inner peripheral surface portion 27 large diameter side cylindrical inner surface portions 30, 30F, 30R, 30A Vibration-resistant seat body 31 Small-diameter cylindrical portion 32, 32A Large-diameter cylindrical portion 33 End flange-shaped portion 33a End shaft receiving hole 34 Connection flange-shaped portion 35a, 35b Inclined surface portion 36 Radially inward engagement portion 37, 37F, 37R, 37A Anti-vibration holding spring 38 Large-diameter portion 38a Engaging portion 39 U-shaped engaging portion 40 Scale 41, 41F, 41R Tenon portion 42, 42F, 42R End shaft portion 43 Whistle ball 44 Rolling stone 45, 45F, 45R End face 50 Spring 55 Hairspring 61 Scale tip 62 Spigot 64 Pinion portion 70 Second wheel A, A1, A2 Direction C Center axis C0R of the true balance Contact position CaV When the stone is tilted Site faces the end face of the true tenon heaven sites Cb become perpendicular to the central axis is brought into contact with tenon receiving surface of the jewel of the vibration bearing mechanism (rotation center)
Cd Site Cf, Cg where the inclined end surface of the tenon portion contacts the tenon receiving surface of the stone receiving portion C1 Region where the stone receiving stone in the form of a sphere contacts the end surface of the tenon portion P1 Flat posture P2 Back flat posture S1 Stone receiving stone on the balance receiving side Inclined and attached state S2 State in which the central axis of the scale is inclined S3 State in which the end face of the tenon is inclined with respect to the central axis of the truth Δr Distance from the central axis to the portion serving as the center of rotation

Claims (10)

スラスト軸受として働く受石と、ジャーナル軸受として働く穴石部及び該穴石部と一体の穴石枠部を備えた穴石・穴石枠一体構造体と、該穴石・穴石枠一体構造体を支えると共に大径の開口端側に係合部を備える耐振座体と、外周側において耐振座体の係合部で支持され内周側において受石を穴石・穴石枠一体構造体に弾性的に押付けて保持する押さえばねとを有するてんぷの耐振軸受機構であって、
受石のうち耐振軸受機構により支えられる軸の端面に対面し該軸の端面に当接する表面が外に突出するように湾曲した凸面からなるてんぷの耐振軸受機構。 A cobblestone / holestone frame integrated structure including a cobblestone that functions as a thrust bearing, a cobblestone portion that functions as a journal bearing, and a cobblestone frame portion that is integral with the cobblestone portion, and the cobblestone / holestone frame integrated structure A vibration-resistant seat body that has an engagement portion on the opening end side of a large diameter and supports, and is supported by the engagement portion of the vibration-proof seat body on the outer peripheral side and elastically receives the stone on the inner peripheral side to the cave stone / hole stone frame integrated structure A vibration-proof bearing mechanism of a balance with a holding spring that is pressed and held
An anti-vibration bearing mechanism for a balance with a convex surface that is curved so that a surface that faces the end face of the shaft supported by the anti-vibration bearing mechanism and contacts the end face of the shaft protrudes outward. 穴石・穴石枠一体構造体が広義のセラミック製で、耐振座体が金属製である請求項１に記載の耐振軸受機構。   2. The vibration-proof bearing mechanism according to claim 1, wherein the hole stone / hole stone frame integrated structure is made of ceramic in a broad sense, and the vibration-proof seat is made of metal. 受石の凸面が球面の一部からなる請求項１又は２に記載のてんぷの耐振軸受機構。   The vibration-proof bearing mechanism for a balance according to claim 1 or 2, wherein the convex surface of the stone is made of a part of a spherical surface. 受石が凸レンズ様の形状を有し、
穴石・穴石枠一体構造体が円錐台状部を備え、該円錐台状部の大径端部のところで受石を支えるように構成され、
押さえばねが、外周側において耐振座体の係合部で支持され内周側において穴石・穴石枠一体構造体の大径端部のところに受石を弾性的に押付けて保持するように構成されている
請求項１から３までのいずれか一つの項に記載のてんぷの耐振軸受機構。 The stone has a convex lens-like shape,
The hole stone / hole stone frame integrated structure has a truncated cone-shaped portion, and is configured to support the stone at the large-diameter end of the truncated cone-shaped portion,
The holding spring is supported by the engaging portion of the vibration-proof seat on the outer peripheral side, and the holding stone is elastically pressed and held at the large-diameter end of the hole stone / hole stone frame integrated structure on the inner peripheral side. The vibration-proof bearing mechanism for a balance according to any one of claims 1 to 3, which is configured. 受石が球体からなる請求項１から３までのいずれか一つの項に記載のてんぷの耐振軸受機構。   The vibration-proof bearing mechanism for a balance according to any one of claims 1 to 3, wherein the stone is made of a sphere. 球状の受石が穴石・穴石枠一体構造体の穴石部に当接可能に穴石・穴石枠一体構造体の穴石枠部の円筒状領域内に配置され、
押さえばねが、外周側において耐振座体の係合部で支持され内周側において穴石・穴石枠一体構造体の穴石枠部の円筒状領域内で穴石部の対向端面に受石を押付けることにより、受石を弾性的に保持するように構成されている
請求項５に記載のてんぷの耐振軸受機構。 A spherical stone is placed in the cylindrical area of the cobblestone frame part of the cobblestone / cavestone frame integrated structure so that it can come into contact with the cobblestone part of the cobblestone / cavestone frame integrated structure,
A holding spring is supported by the engaging portion of the vibration-proof seat on the outer peripheral side, and a stone is received on the opposite end face of the cobblestone portion in the cylindrical area of the cobblestone frame portion of the cobblestone / holestone frame integrated structure on the inner peripheral side. The balance with vibration resistance of the balance according to claim 5, wherein the balance is elastically held by pressing. 穴石・穴石枠一体構造体の穴石枠部のうち受石のほぞ受面を支える部位が円錐台状である請求項１から６までのいずれか一つの項に記載のてんぷの耐振軸受機構。   The vibration-proof bearing for a balance according to any one of claims 1 to 6, wherein a portion that supports the tenon receiving surface of the stone is a truncated cone shape in the stone stone frame portion of the stone stone / hole stone frame integrated structure. mechanism. 請求項１から７までのいずれか一つの項に記載の耐振軸受機構を有するてんぷ。   A balance with the vibration-proof bearing mechanism according to any one of claims 1 to 7. 耐振軸受機構により支えられる軸がてん真からなり、てん真の両端部にあり該てん真の本体部よりも小径のほぞ部の端面が実際上平面状である請求項７に記載のてんぷ。   8. The balance according to claim 7, wherein the shaft supported by the vibration-proof bearing mechanism is made of a balance stem, and the end surface of the tenon portion having a diameter smaller than that of the main body portion of the balance scale is actually flat. 請求項１から７までのいずれか一つの項に記載の耐振軸受機構又は請求項８若しくは９に記載のてんぷを有する時計。   A timepiece having the vibration-proof bearing mechanism according to any one of claims 1 to 7 or the balance with the balance according to claim 8 or 9.
JP2011226910A 2011-10-14 2011-10-14 Antishock bearing mechanism of balance, balance provided with the antishock mechanism, and watch provided with the same Pending JP2013088179A (en)

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JP2011226910A JP2013088179A (en) 2011-10-14 2011-10-14 Antishock bearing mechanism of balance, balance provided with the antishock mechanism, and watch provided with the same
CH19142012A CH705583A2 (en) 2011-10-14 2012-10-10 Damping rod receiving mechanism i.e. shock absorber bearing, for hairspring balance of timepiece, has stone cons pivot whose tenon receiving surface is opposite to end surface of rod supported by mechanism and in contact with end surface
CN 201210389965 CN103048912A (en) 2011-10-14 2012-10-15 Shock resistant bearing mechanism of hair spring balance wheel and hair spring balance wheel and clock with the mechanism

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EP3671368B1 (en) 2018-12-20 2022-11-23 The Swatch Group Research and Development Ltd Bearing, in particular shock absorber device, and rotating part of a clock movement
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