JPS5839433Y2 - clock day board - Google Patents

Description

【考案の詳細な説明】 本考案は時計の曜日板の改良に関するものである。[Detailed explanation of the idea] The present invention relates to an improvement of the day plate of a clock.

近年、プラスチック製の一体に成形された曜日板が製造
されているが、厚さや剛性などの問題点があり、その為
、板体と皇軍を加締めてなる金属製曜日板も依然として
重視されている。In recent years, integrally molded plastic day plates have been manufactured, but there are problems with their thickness and rigidity, and for this reason, metal day plates made by tightening the plate and the imperial army are still considered important. There is.

第１図Ａは従来の曜日板を示す軸を含む断面、Ｂはその
下面図である。FIG. 1A is a cross section including an axis showing a conventional day plate, and FIG. 1B is a bottom view thereof.

１は板体であり、２は皇軍であり、以下本明細書を通し
て同じ番号は同じ部分を表わす。1 is a plate, 2 is an imperial army, and the same numbers represent the same parts throughout this specification.

板体１は一般的に厚さ７０ミクロンのアルミニウム板を
プレス抜きしたものである。The plate 1 is generally a pressed aluminum plate having a thickness of 70 microns.

近年、水晶時計等大部分の時計のエネルギー源は電池に
なって来ているが、曜日板等の可動部材は電池の消耗を
できるだけ少なくする為に、慣性モーメントを可能な限
り、小さくする必要がある。In recent years, batteries have become the energy source for most watches such as crystal watches, but the moment of inertia of movable parts such as day plates must be made as small as possible to minimize battery consumption. be.

密度の小さいアルミニウムを用いるのはこの為であり、
薄くするのも同じ理由と、時計を薄くする為による。This is why we use aluminum, which has a low density.
The reason for making it thin is to make the watch thinner.

板体１の中心部には後述する皇軍２と第１図の如く嵌合
する穴があり、また上面には曜日を表示する印刷が施さ
れる。There is a hole in the center of the plate 1 that fits into the later-described imperial army 2 as shown in Figure 1, and the top surface is printed to indicate the day of the week.

皇軍２は中心部に貫通穴３を有し、下方外周部には７枚
又は１４枚の歯４を有する。The imperial army 2 has a through hole 3 in the center, and has 7 or 14 teeth 4 on the lower outer periphery.

加締めは２段階で行なわれ、第１は皇軍２の上部をなす
リング状突起を全周に渡って上方より平面で押しつぶす
もの（平加締め）であり、第２は第１の工程で塑性変形
された平加締め部５の上部を数ケ所で上方よりたたきＶ
字状溝６を形成させるもの（矢加締め）である。The caulking is carried out in two steps.The first is to crush the ring-shaped protrusion that forms the upper part of the imperial army 2 with a flat surface from above over the entire circumference (flat caulking), and the second is to crush the ring-shaped protrusion that forms the upper part of the imperial army 2 with a flat surface from above (flat caulking). Tap the upper part of the deformed flat caulking part 5 from above at several places V
This is for forming the character-shaped groove 6 (arrow crimping).

第１段階の平加締めはリング状突起を塑性変形させるこ
とにより、主として軸方向の抜けを防止している。The first stage of flat crimping mainly prevents slippage in the axial direction by plastically deforming the ring-shaped protrusion.

第２の矢加締めは主として板体１と皇軍２の相互の回転
防止の役をはたす。The second arrow caulking mainly serves to prevent the plate 1 and the imperial army 2 from rotating against each other.

実際にはこの第２の矢加締めでトラブルが多発している
。In reality, many troubles occur with this second arrow tightening.

すなわち加締め力が強過ぎると回転防止の効果は生じる
が、前述のように板体１は薄いものがある為、反りが発
生し不良品となる。That is, if the crimping force is too strong, the effect of preventing rotation will occur, but as mentioned above, since the plate 1 may be thin, warping will occur and the product will be defective.

また逆に加締め力か弱過ぎると反りは生じないが加締め
の効果がなく板体１と皇軍２とが相互に回転してしまい
位置が定まらない。On the other hand, if the crimping force is too weak, no warpage will occur, but the crimping will not be effective and the plate 1 and the imperial arm 2 will rotate relative to each other, making it impossible to determine their position.

このように従来の曜日板は加締め力の調整が難しく、シ
かも歩留りが悪かった。As described above, it was difficult to adjust the crimping force of the conventional day plate, and the yield was poor.

本考案は上記のような従来技術の欠点を解決すべく、前
述の矢加締めによるｖ字溝の作用を深く追求した結果な
されたもので、その要旨は実用新案登録請求の範囲に記
載の如くである。In order to solve the above-mentioned drawbacks of the prior art, the present invention was developed as a result of deep investigation into the effect of the V-shaped groove by arrow crimping, and the gist of the invention is as stated in the claims for utility model registration. It is.

次に本考案を実施例を示す第２図にて説明する。Next, the present invention will be explained with reference to FIG. 2 showing an embodiment.

第２図においてＡは曜日板の軸を含む断面図、Ｂはその
平面図である。In FIG. 2, A is a sectional view including the axis of the day plate, and B is a plan view thereof.

Ｖ字溝１は軸に平行な面８と軸に平行でない面９とから
成っており、この実施例では４ケ所に設けられている。The V-shaped groove 1 consists of a surface 8 that is parallel to the axis and a surface 9 that is not parallel to the axis, and is provided at four locations in this embodiment.

第３図は第２図Ｂのｌｌｌ−１断面の要部拡大図である
。FIG. 3 is an enlarged view of the main part of the lll-1 cross section of FIG. 2B.

Ｖ字溝７の下方にあたる平加締め部の下部が前記Ｖ字溝
に類似した断面Ｖ字状の突起１０を有している。The lower part of the flat caulking portion below the V-shaped groove 7 has a protrusion 10 having a V-shaped cross section similar to the V-shaped groove.

また板体１は前記突起１０の占める部分に凹部を有して
いる。Further, the plate body 1 has a recessed portion in a portion occupied by the projection 10.

これらＶ字状の突起１０とＶ字状の凹部はそれぞれ軸に
平行な平面１１．１１’及び軸に平行でない平面１２
、１２’とから成っており、第３図に見る如く左右非対
称であるが、曜日板の正常な回転を起させる力が矢印１
３の如く加わった時、Ｖ字状突起の軸に平行な面１１が
、Ｖ字状凹部の軸に平行な面１１′を押すように形成さ
れている。These V-shaped protrusions 10 and V-shaped recesses are formed by planes 11 and 11' parallel to the axis and planes 12 not parallel to the axis, respectively.
, 12', and are asymmetrical as shown in Figure 3, but the force that causes the normal rotation of the day plate is shown by arrow 1.
3, the surface 11 parallel to the axis of the V-shaped protrusion presses the surface 11' parallel to the axis of the V-shaped recess.

このような曜日板は第４図の斜視図に示すような左右非
対称なＶ字状をした先端を複数有する加締め矢を用いる
ことによって容易に形成され、従来のものに比べて特別
難しい加工は必要とせず、加工上例ら不利益を受けるも
のではない。Such a day plate can be easily formed by using a caulking arrow that has a plurality of asymmetrical V-shaped tips as shown in the perspective view of Figure 4, and requires no processing that is particularly difficult compared to conventional ones. It is not necessary and does not cause any disadvantages in processing.

さて上記の如き形状の曜日板にあっては、正常な回転力
が軸に平行な面１１，１１’によって伝えられ、該平面
において軸方向の力はほとんど働かない。Now, in the day plate having the above shape, normal rotational force is transmitted through the planes 11, 11' parallel to the axis, and almost no axial force acts on these planes.

因みに従来のものは、ちょうど第３図において矢印１３
と逆方向の力が加わったと同じ状態になり、回転力は軸
に平行でない平面１２ 、１２’によって伝えられる。By the way, the conventional one is exactly at the arrow 13 in Fig. 3.
The same situation occurs when a force in the opposite direction is applied, and the rotational force is transmitted by planes 12 and 12' that are not parallel to the axis.

従って軸方向の分力が生じ該平面を滑り上がることにな
る。Therefore, an axial component of force is generated, causing it to slide up the plane.

この軸方向の分力によって平加締め部５は上方へ浮き上
がり足車２と板体１とは相互に回転してしまい不良品と
なる。Due to this axial component force, the flat crimped portion 5 is lifted upward, causing the caster 2 and the plate 1 to rotate relative to each other, resulting in a defective product.

事実第２，３図に示す曜日板の伝達トルクの限界を測定
したところ、正規の回転方向には約６５ｇ−ｃＩＩｌ（
Ｘ１ｏ）であるのに対し逆回転方向には約４ ｓ ｇ
−ＣｒｒＬ（Ｘｔｏ）であり、後者は３０％も劣ってい
た。In fact, when we measured the limit of the transmission torque of the day plate shown in Figures 2 and 3, we found that it was approximately 65 g-cIIl (
X1o), whereas in the reverse rotation direction it is about 4 s g
-CrrL(Xto), and the latter was inferior by 30%.

なお実際の加締め矢の形状は第５図Ａの平面図とＢの正
面図に示す如く、軸に平行な平面が軸を含んでいない。Note that, as shown in the plan view of FIG. 5A and the front view of FIG. 5B, the actual shape of the crimping arrow is such that the plane parallel to the axis does not include the axis.

この場合半径方向の余分は生じるが、軸方向の余力はや
はりほとんどない。In this case, there is an excess force in the radial direction, but there is still almost no excess force in the axial direction.

また先端の寿命を延ばす為、幅０．２ｙｒａｒｔ程度の
わずかな平担部１４が設けられている。Further, in order to extend the life of the tip, a slight flattened portion 14 with a width of about 0.2 yrart is provided.

以上の如く、本考案によれば、足車２から板体１へ伝え
られる力が軸方向の分力を生じず、従って平加締め部５
に浮き上がる力を与えないので、トルクの限界が向上し
、安定する。As described above, according to the present invention, the force transmitted from the caster 2 to the plate body 1 does not generate a component force in the axial direction, so that the flat crimped portion 5
Since no lifting force is applied to the shaft, the torque limit is improved and stability is achieved.

これらによって加締め力の調整が容易になり、しかもト
ルク不足及び、反りが減少し歩留りが向上する等の多大
な効果がある。These make it easy to adjust the crimping force, and have great effects such as reducing torque shortages and warping, and improving yield.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の曜日板を示し、Ａ図は軸を含む断面図、
Ｂ図はその下面図、第２図は本考案の実施例を示す曜日
板で、Ａ図は軸を含む断面図、Ｂ図はその平面図、第３
図は第２図ＢのＩ［Ｉ−１要部断面図、第４図は本考案
に係る曜日板等を加工する加締め矢の斜視図、第５図は
本考案に係る別な加締め矢を示し、Ａ図は要部平面図Ｂ
図は正面図である。 １・・・・・・板体、２・・・・・・足車、７・・・・
・・Ｖ字状溝、８・・・・・・軸に平行な面、９・・・
・・・軸に平行でない面、１０・・・・・・Ｖ字状突起
。Figure 1 shows a conventional day board, Figure A is a sectional view including the axis,
Figure B is a bottom view of the same, Figure 2 is a day plate showing an embodiment of the present invention, Figure A is a sectional view including the axis, Figure B is a plan view thereof, and Figure 3 is a day plate showing an embodiment of the present invention.
The figure is a sectional view of I [I-1 main part of Figure 2B, Figure 4 is a perspective view of a crimping arrow for processing a day plate, etc. according to the present invention, and Figure 5 is a different crimping according to the present invention. Arrows are shown, and Figure A is a plan view of the main part B.
The figure is a front view. 1...Plate body, 2...Casters, 7...
...V-shaped groove, 8... Surface parallel to the axis, 9...
... Surface not parallel to the axis, 10 ... V-shaped protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 円盤状の板体１と歯を有する皇軍２とが加締められて成
る時計の曜日板において、皇軍２の上部を成し、前記板
体を押える平加締め部を上方に開口したほぼ放射状に設
けられた複数の一面を軸に平行とし他の一面を軸に平行
でない断面略Ｖ字状の溝に形威し、各々の溝の下方には
前記板体に喰い込む前記溝に類似した形状のＶ字状突起
を設け、曜日板の正常な回転を起こさせる力が皇軍の歯
に加わった時、主として前記Ｖ字状突起と該突起に対応
する板体のｖ字状凹部との各々の軸に平行な面を通して
板体に回転力が伝えられるように成した時計の曜日板。In the day plate of a clock, which is formed by crimping a disc-shaped plate 1 and a toothed Imperial Army 2, the flat crimping part that forms the upper part of the Imperial Army 2 and presses the plate is opened upward in a substantially radial manner. A plurality of grooves having a substantially V-shaped cross section with one side parallel to the axis and the other side not parallel to the axis, and the lower part of each groove has a shape similar to the groove cut into the plate body. A V-shaped protrusion is provided, and when the force that causes the normal rotation of the day plate is applied to the imperial teeth, each of the V-shaped protrusions and the V-shaped recesses of the plate corresponding to the protrusions A day plate for a clock that allows rotational force to be transmitted to the plate through a plane parallel to the axis.