JP3041586B2 - Bearing device - Google Patents
Bearing deviceInfo
- Publication number
- JP3041586B2 JP3041586B2 JP8149501A JP14950196A JP3041586B2 JP 3041586 B2 JP3041586 B2 JP 3041586B2 JP 8149501 A JP8149501 A JP 8149501A JP 14950196 A JP14950196 A JP 14950196A JP 3041586 B2 JP3041586 B2 JP 3041586B2
- Authority
- JP
- Japan
- Prior art keywords
- mortise
- volume
- grease
- gear
- concave portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Description
【０００１】[0001]
【発明の技術分野】本発明は、例えば時計用の歯車を地
板に軸支するために用いる軸受装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device used for supporting, for example, a timepiece gear on a main plate.
【０００２】[0002]
【従来の技術】通常ステップモータによって駆動する時
計の指針や時計の回転飾りを、ステップモータの間欠的
な回転を連続的な滑らかな回転に見えるようにする手段
を採用することが行なわれている（例えば実開平２−１
２８９９４号公報）。2. Description of the Related Art Normally, a means for making a hand of a timepiece or a rotating decoration of a timepiece driven by a stepping motor look like an intermittent rotation of the stepping motor as a continuous smooth rotation is employed. (For example, the actual Kaihei 2-1
No. 28994).
【０００３】間欠的な回転を連続的な回転に見えるよう
にするための手段としては、第１に、ステップモータの
駆動歯車から秒針歯車または回転飾りの駆動歯車に動力
を伝達する輪列中に緩衝用のばねを介在させ、このばね
の変形によって間欠的回転による速度差を吸収するよう
にしている。第２に、輪列歯車の軸受部にグリースなど
の粘性部材を充填して粘性結合させることにより間欠的
な回転による速度差を吸収するようにしている。通常は
これら両手段を併用することにより、連続的かつ滑らか
な回転が得られるようにしている。As means for making intermittent rotation appear as continuous rotation, first, a wheel train transmitting power from a driving gear of a step motor to a second hand gear or a driving gear of a rotary decoration is used. A buffer spring is interposed, and the deformation of the spring absorbs a speed difference caused by intermittent rotation. Second, a speed difference due to intermittent rotation is absorbed by filling a viscous member such as grease into a bearing portion of the wheel train gear and performing viscous coupling. Usually, by using these two means together, continuous and smooth rotation can be obtained.
【０００４】ところで、軸受部に粘性部材を充填して粘
性結合を得ようとする場合には、通常は地板または歯車
側の一方に設けてあるホゾの周囲に円筒状の周壁部を設
け、この周壁部に囲まれた凹部内にグリースを充填した
状態で上記ホゾに地板または歯車側の他方に形成された
ホゾ穴を嵌合させている。In order to obtain viscous coupling by filling a viscous member into a bearing portion, a cylindrical peripheral wall portion is usually provided around a tenon provided on one of a main plate and a gear. A mortise formed in the other side of the base plate or the gear is fitted to the mortise in a state in which grease is filled in a recess surrounded by the peripheral wall.
【０００５】[0005]
【発明が解決しようとする課題】上述したように、ホゾ
にホゾ穴を嵌合させると、凹部に充填してあるグリース
などの粘性部材はホゾの進入によって排除され、凹部内
に残されたすき間に充填される。このとき、予め充填し
てあるグリースの量が多過ぎると、グリースが凹部から
はみ出してケースの内部を汚したり、ケース外に浸み出
したりする問題がある。これに対しグリースの充填量が
不足している場合には、十分な粘性結合が得られない問
題がある。As described above, when the mortise is fitted in the tenon, the viscous member such as grease filled in the concave is removed by the entry of the tenon and the gap left in the concave is formed. Is filled. At this time, if the amount of the pre-filled grease is too large, there is a problem that the grease protrudes from the concave portion and contaminates the inside of the case or seeps out of the case. On the other hand, if the filling amount of the grease is insufficient, there is a problem that a sufficient viscous coupling cannot be obtained.
【０００６】[0006]
【課題を解決するための手段】そこで本発明の軸受装置
は、この軸受装置内に充填されたグリースなどの粘性部
材が組立によって軸受装置外にこぼれないようにするた
めに、回転体と地板との一方に中心にホゾを有する凹部
を形成し、他方に上記ホゾが嵌入するホゾ穴を有する突
部を上記凹部内に進入させて遊嵌し、組立前にホゾ穴に
充填させた粘性部材の所定量が組立後にホゾ穴から凹部
内に排除されるが、この排除された所定量の粘性部材は
凹部から外部には排除されない量となっている。これに
より適切な粘性結合が得られるようにした。SUMMARY OF THE INVENTION Therefore, the bearing device of the present invention is provided with a rotating body, a ground plate, and a rotating body to prevent a viscous member such as grease filled in the bearing device from spilling out of the bearing device by assembly. A recess having a mortise at the center is formed on one side, and a protrusion having a mortise hole into which the mortise fits is inserted into the recess on the other side and loosely fitted, and a viscous member filled in the mortise hole before assembly is formed. Although a predetermined amount is removed from the mortise hole into the concave portion after the assembling, the removed predetermined amount of the viscous member is an amount that is not removed from the concave portion to the outside. This ensures that a suitable viscous bond is obtained.
【０００７】[0007]
【発明の実施の形態】本発明は、歯車等の回転体を所定
量の粘性部材を介在させた状態で回転自在に地坂に軸支
してある。回転体と地坂との一方には中心にホゾを有す
る凹部が形成してあり、他方にはホゾが嵌入するホゾ穴
を有する突部が凹部内に進入した状態で遊嵌している。
ホゾ穴の容積は、凹部の容積から突部が凹部に進入した
部分の容積を引いた容積と等しいか又はやや小さく形成
してあり、このホゾ穴には予め組立前に粘性部材が充填
してある。過不足がなく、かつ適切な粘性結合を得るた
めには、粘性部材の充填量とホゾ穴の容積とをほぼ等し
くすることが望ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a rotating body such as a gear is rotatably supported on a ground slope with a predetermined amount of a viscous member interposed therebetween. A recess having a mortise at the center is formed on one of the rotating body and the ground slope, and a projection having a mortise hole into which the mortise fits is loosely fitted into the recess on the other side.
The volume of the mortise hole is formed equal to or slightly smaller than the volume of the concave portion minus the volume of the portion where the protrusion has entered the concave portion, and the mortise hole is filled with a viscous member before assembly beforehand. is there. In order to obtain appropriate viscous coupling without excess or deficiency, it is desirable that the filling amount of the viscous member and the volume of the mortise hole be substantially equal.
【０００８】[0008]
【実施例】図１は、回転体の一例としての歯車Ｇを時計
の地板Ｊに組み込む前の状態を拡大して示したものであ
る。歯車Ｇには、歯車部１と一体に軸部２が設けてあ
る。軸部２の端面には、所定の内径及び深さのホゾ穴２
ａが設けてあり、その周囲を円筒状の突部２ｂによって
囲んだ状態としてある。ホゾ穴２ａには、このホゾ穴の
容積にほぼ等しい量の粘性部材の一例としてのグリース
６が充填してある。FIG. 1 is an enlarged view showing a state before a gear G as an example of a rotating body is incorporated into a main plate J of a timepiece. The gear G is provided with a shaft portion 2 integrally with the gear portion 1. A mortise hole 2 having a predetermined inner diameter and depth is provided on an end face of the shaft portion 2.
a is provided, and the periphery thereof is surrounded by a cylindrical projection 2b. The mortise 2a is filled with grease 6 as an example of a viscous member in an amount substantially equal to the volume of the mortise.
【０００９】これに対しホゾ３は、地板Ｊと一体に円柱
状に立設してあり、先端の中心部にはわずかに盛り上げ
てなる突起部３ａが形成してある。ホゾ３の周囲には、
所定の幅を隔てて円筒状の周壁部４が形成してある。周
壁部４の内側とホゾ３の周囲は歯車の突部２ｂが遊嵌可
能なリング状の凹部５となっている。On the other hand, the tenon 3 stands upright in a columnar shape integrally with the base plate J, and has a slightly raised protruding portion 3a at the center of the tip. Around the tenon 3,
A cylindrical peripheral wall portion 4 is formed at a predetermined width. The inside of the peripheral wall portion 4 and the periphery of the tenon 3 form a ring-shaped concave portion 5 into which the projection 2b of the gear can be loosely fitted.
【００１０】図２は、歯車Ｇのホゾ穴２ａを地板Ｊのホ
ゾ３に遊嵌した状態を示している。この状態ではホゾ穴
２ａ内に充填してあったグリース６は、ホゾ３がホゾ穴
２ａ内に進入した容積の分だけ排除され、ホゾの周囲か
ら、凹部５の底面及び内周面に沿って流出して、突部２
ｂの周囲を取り囲むように周壁部４の高さを越えること
なく広がっている。このように凹部５内におけるグリー
ス６の充満量は、ホゾ穴２ａ、ホゾ３、突部２ｂおよび
凹部５の形状に加えて、ホゾ穴２ａへのグリース６の充
填量とによって決まってくる。凹部５に突部２ｂを嵌合
したときに、ホゾ３によってホゾ穴２ａから押し出され
たグリース６が突部２ｂの先端からさらに突部２ｂの外
周部にまで回っていると粘性効果が大きい点と、部品の
寸法精度の影響と、充填作業後の注油量の確認の容易化
等とを考慮に入れると、ホゾ穴２ａのグリース６の充填
量は、ホゾ穴の容積と等しくすることが望ましい。FIG. 2 shows a state in which the mortise 2a of the gear G is loosely fitted to the mortise 3 of the main plate J. In this state, the grease 6 that has been filled in the mortise hole 2a is removed by an amount corresponding to the volume of the mortise 3 that has entered the mortise hole 2a, and from around the mortise, along the bottom surface and the inner peripheral surface of the concave portion 5. Spilled out, protrusion 2
It extends without exceeding the height of the peripheral wall portion 4 so as to surround the periphery of b. As described above, the filling amount of the grease 6 in the concave portion 5 is determined by the filling amount of the grease 6 into the mortise hole 2a in addition to the shapes of the mortise hole 2a, the mortise 3, the protrusion 2b, and the concave portion 5. When the projection 2b is fitted into the recess 5 and the grease 6 pushed out from the mortise hole 2a by the tenon 3 turns from the tip of the projection 2b to the outer periphery of the projection 2b, the viscous effect is large. Taking into account the effect of the dimensional accuracy of the parts, the ease of checking the amount of lubrication after the filling operation, and the like, it is desirable that the filling amount of the grease 6 in the mortise hole 2a be equal to the volume of the mortise hole. .
【００１１】そこで、ホゾ穴２ａにグリース６を摺り切
り一杯に充填して、歯車Ｇを地板Ｊに組み込むと、ホゾ
穴２ａに充填してあったグリース６がホゾ３によって排
除され、突部２ｂの先端と凹部５との間のすき間を通っ
て、突部２ｂの外周部まで流出し、この流出したグリー
ス６は凹部５の周壁部４の端部よりやや低い位置に留ま
っており、周壁部４より外側へは流れ出ないようになっ
ている。When the mortise 2a is completely filled with the grease 6 and the gear G is incorporated into the main plate J, the grease 6 which has been filled in the mortise 2a is removed by the mortise 3 and the projection 2b is formed. The grease 6 flows out through the gap between the tip of the recess 5 and the outer periphery of the projection 2 b, and the grease 6 that has flowed out stays at a position slightly lower than the end of the peripheral wall 4 of the concave 5. 4 does not flow out.
【００１２】ホゾ穴２ａの容積Ｖ1 は、ホゾ穴の内径を
ｐ、深さをｈとすると、 V1=πp2h/4 である。The volume V1 of the mortise hole 2a is V1 = πp 2 h / 4 where the inner diameter of the mortise hole is p and the depth is h.
【００１３】次にホゾ３の周囲及び周壁部４との間に形
成してある凹部５の容積Ｖ2 は、ホゾ３の直径をｃ、そ
の高さをＬ、凹部の内径をｄ、その深さをＨ、およびＬ
≧Ｈとすると、 V2＝π(d2-c2)H/4 である。Next, the volume V2 of the concave portion 5 formed between the periphery of the tenon 3 and the peripheral wall portion 4 is such that the diameter of the tenon 3 is c, its height is L, the inside diameter of the concave portion is d, and its depth is Are H and L
If ≧ H, then V2 = π (d 2 −c 2 ) H / 4.
【００１４】凹部５とホゾ穴２ａの内側に充満するグリ
ース６の量Ｖ4 は、ホゾ３の突起部３ａは盛り上げが僅
かであるのでそれを無視し、突部２ｂの外径をｑ、突部
２ｂの外径ｑに留まっているグリース６の凹部５の底部
からの高さをＴとすると、 V4＝π{T(d2-q2)＋(L−h)(q2-p2)＋L(p2-c2)}/4 である。The amount V4 of the grease 6 filling the recess 5 and the inside of the mortise hole 2a is negligible because the protrusion 3a of the mortise 3 is slightly raised, so that the outer diameter of the protrusion 2b is q, and the protrusion 2b is q. Assuming that the height of the grease 6 remaining at the outer diameter q of 2b from the bottom of the concave portion 5 is T, V4 = π {T (d 2 −q 2 ) + (L−h) (q 2 −p 2 ) + L (p 2 -c 2 )} / 4.
【００１５】ホゾ穴２ａの容積Ｖ1 は、凹部５の容積Ｖ
2 から突部２ｂが凹部５に進入してその進入した部分の
容積Ｖ3 を引いたものに等しくなっているか又はやや小
さく形成してある。すなわち、 V1≦V2−V3 となる。これによって凹部５に突部２ｂが進入してもグ
リース６が凹部５から溢れ出ることがない。また、Ｖ4
は充填すべき粘性部材の適切な量（容積）であり、ホゾ
穴の容積Ｖ1 とほぼ等しくなるようにすることにより得
られる。したがって、Ｖ1 ＝Ｖ4 となるように各部の寸
法を決めれば、グリースの充填量は適切なものとなる。The volume V1 of the mortise hole 2a is
2, the protrusion 2b enters the recess 5 and is formed to be equal to or slightly smaller than a value obtained by subtracting the volume V3 of the entered portion. That is, V1 ≦ V2−V3. Thus, the grease 6 does not overflow from the recess 5 even when the protrusion 2b enters the recess 5. Also, V4
Is an appropriate amount (volume) of the viscous member to be filled, and is obtained by making the volume substantially equal to the volume V1 of the mortise hole. Therefore, if the size of each part is determined so that V1 = V4, the grease filling amount becomes appropriate.
【００１６】突部２ｂが凹部５に進入した部分の容積Ｖ
3 は V3＝π(q2-p2){H−(L−h)}/4 である。The volume V of the portion where the protrusion 2b enters the recess 5
3 is V3 = π (q 2 −p 2 ) {H− (L−h)} / 4.
【００１７】このようにして諸寸法を決めた軸受装置
は、歯車Ｇのホゾ穴２ａにグリース６を満たして充填し
たものをホゾ３に嵌合するだけで粘性結合機能を備えた
軸受装置が成立する。したがって粘性結合用粘性部材を
採用する時計や時計の回転飾り装置にこれを組み込むこ
とが容易となる。In the bearing device having various dimensions determined in this way, a bearing device having a viscous coupling function can be realized simply by fitting the mortise hole 2a of the gear G with the grease 6 and filling it with the mortise 3. I do. Therefore, it is easy to incorporate this into a timepiece or a timepiece decoration device that employs a viscous member for viscous coupling.
【００１８】この実施例では回転体を歯車として説明し
てあるが、これに限定されるものではない。また、粘性
部材もグリース以外の高粘性材を使用してもよい。ま
た、ホゾを回転体側に設け、ホゾ穴を地板側に設けるよ
うにすることも可能である。In this embodiment, the rotating body is described as a gear, but is not limited to this. The viscous member may also be made of a highly viscous material other than grease. It is also possible to provide a tenon on the rotating body side and a tenon hole on the main plate side.
【００１９】[0019]
【発明の効果】本発明によれば、粘性結合用の粘性部材
の使用量を適切なものとすることが可能となるので、無
駄がなくかつ、常に粘性結合を作用させた回転運動が得
られる効果がある。また、粘性部材をホゾ穴に充填する
だけで適切な充填量となるので充填作業が極めて簡単と
なり、歯車等の回転体の組み込み作業が容易となり、そ
れだけ組み立てコストが低減可能となる。According to the present invention, the amount of the viscous member used for the viscous coupling can be set to an appropriate amount, so that there can be obtained a rotary motion without waste and always applying the viscous coupling. effective. In addition, since the filling amount becomes an appropriate amount just by filling the mortise with the viscous member, the filling operation becomes extremely simple, the assembling operation of the rotating body such as the gear becomes easy, and the assembling cost can be reduced accordingly.
【図１】歯車の組み込み前の状態を示す要部の展開断面
図である。FIG. 1 is an exploded sectional view of a main part showing a state before a gear is assembled.
【図２】歯車を組み込んだ状態を示す要部の断面図であ
る。FIG. 2 is a sectional view of a main part showing a state where a gear is incorporated.
Ｇ 歯車 Ｊ 地板 ２ａ ホゾ穴 ２ｂ 突部 ３ ホゾ ５ 凹部 ６ 粘性部材 G gear J ground plate 2a mortise hole 2b protrusion 3 mortise 5 recess 6 viscous member
フロントページの続き (56)参考文献 特開 平８−94775（ＪＰ，Ａ) 特開 平７−103237（ＪＰ，Ａ) 実開 平２−128994（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G04B 31/00 G04B 13/00 F16C 33/10 G04C 3/14 Continuation of the front page (56) References JP-A-8-94775 (JP, A) JP-A-7-103237 (JP, A) JP-A-2-128994 (JP, U) (58) Fields investigated (Int) .Cl. 7, DB name) G04B 31/00 G04B 13/00 F16C 33/10 G04C 3/14
Claims (2)
在させて回転自在に地坂に軸支してあり、 上記回転体と上記地坂との一方には中心にホゾを有する
凹部が形成してあり、他方には上記ホゾが嵌入するホゾ
穴を有する突部が上記凹部内に進入した状態で遊嵌して
おり、 上記ホゾ穴の容積は、上記凹部の容積から上記突部が上
記凹部に進入した部分の容積を引いた容積と等しいか又
はやや小さく形成してあり、 上記ホゾ穴には、組立前に上記粘性部材が充填してある
ことを特徴とする軸受装置。1. A rotating body such as a gear is rotatably supported on a ground slope with a predetermined amount of a viscous member interposed therebetween, and one of the rotating body and the ground slope has a recess at a center thereof. On the other side, a projection having a mortise hole into which the mortise fits is loosely fitted in a state of entering the concave portion, and the volume of the mortise hole is calculated from the volume of the concave portion to the protrusion. Is formed to be equal to or slightly smaller than the volume of the portion that has entered the concave portion, and that the mortise hole is filled with the viscous member before assembly.
量は、上記ホゾ穴の容積とほぼ等しくしてあることを特
徴とする軸受装置。2. The bearing device according to claim 1, wherein a filling amount of the viscous member is substantially equal to a volume of the mortise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8149501A JP3041586B2 (en) | 1996-06-11 | 1996-06-11 | Bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8149501A JP3041586B2 (en) | 1996-06-11 | 1996-06-11 | Bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09329675A JPH09329675A (en) | 1997-12-22 |
| JP3041586B2 true JP3041586B2 (en) | 2000-05-15 |
Family
ID=15476542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8149501A Expired - Fee Related JP3041586B2 (en) | 1996-06-11 | 1996-06-11 | Bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3041586B2 (en) |
-
1996
- 1996-06-11 JP JP8149501A patent/JP3041586B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09329675A (en) | 1997-12-22 |
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