JP3481844B2 - Clock pointer fixing structure - Google Patents
Clock pointer fixing structureInfo
- Publication number
- JP3481844B2 JP3481844B2 JP36780197A JP36780197A JP3481844B2 JP 3481844 B2 JP3481844 B2 JP 3481844B2 JP 36780197 A JP36780197 A JP 36780197A JP 36780197 A JP36780197 A JP 36780197A JP 3481844 B2 JP3481844 B2 JP 3481844B2
- Authority
- JP
- Japan
- Prior art keywords
- pointer
- shaft
- mounting hole
- pointer mounting
- convex
- 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
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Electromechanical Clocks (AREA)
Description
【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は、時計における指
針、特に秒針を時計用指針車の指針取付部分に取り付け
て固定する固定構造に関する。
【0002】
【従来の技術】従来の一般的な秒針の固定構造は、四番
車に設けられた丸軸からなる指針取付軸に、丸孔が設け
られた秒針のハカマを被せて押圧嵌合させることにより
固定するものであった。
【0003】しかしながら、このような丸孔と丸軸との
嵌合では、互いの周上曲面が全周で密接することにより
固定する構造となっているため、僅かな寸法のズレや衝
撃による変形により固定力が極端に低下することがあっ
た。このため、耐衝撃、耐落下を考慮して圧入シロを多
くすると、嵌合時の僅かなズレで指針取付軸が変形した
り、ハカマが破損することがあった。また、秒針のハカ
マの丸孔が有底のものであると、丸軸との嵌合時に丸孔
内の空気が抜けず、嵌合しにくくなり、軸の変形やハカ
マの破損をより多く発生させることになっていた。この
ような問題が生じるため、丸孔と丸軸とを嵌合させる指
針の固定構造においては、寸法公差の管理が大変難しい
ものであった。
【0004】上記のような丸孔と丸軸との嵌合による様
々な問題を解決するため、次のような従来技術が提案さ
れていた。実開平1−168893号公報に開示されて
いるものは、秒針取付軸の外周に凸状の山形部を設け、
この山形部で丸孔からなる指針取付孔を変形させながら
嵌合させて指針を軸に固定する構造となっている。ま
た、実開昭57−72116号公報に開示されているも
のは、指針に多角孔を設け、この多角孔を丸軸からなる
指針取付軸に圧接嵌合させて指針を軸に固定する構造と
なっている。更に、実開昭57−83484号公報に開
示されているものは、角柱状の指針軸に丸孔からなる指
針の取付孔を嵌合させて指針を軸に固定する構造となっ
ている。これらの従来技術においては、何れも、丸い孔
又は軸と山形部あるいは角のある角状の軸又は孔とを嵌
め合わせたものであり、丸孔と丸軸とを嵌合させるもの
に比べて、面と面が全周にわたって密接することがない
ため、嵌め込み易く、また、一方が他方に食い込んだり
変形させるように嵌め込まれるため、固定力も高いもの
であった。
【0005】
【発明が解決しようとする課題】上記従来技術において
は、最初の圧接嵌合は良好になされるが、剣付け工程等
で指針の付け直しが発生した場合、最初の嵌合時に既に
ハカマが変形していたり、孔の内周面等が削り取られて
いるため、再度嵌合しても寸法のズレや変形により固定
力が大幅に弱まって抜脱してしまうことがあった。
【0006】本発明は、上記従来技術の課題に鑑みなさ
れたもので、嵌合し易く且つ固定力が強いだけでなく、
繰り返し嵌脱しても強固な固定力を得ることができる時
計の指針固定構造を提供するものである。
【0007】
【課題を解決するための手段】本発明の時計の指針固定
構造は、指針及び時計用指針車のうちの一方に形成され
た指針取付孔を、指針及び時計用指針車のうちの他方に
形成された指針取付軸に嵌合させることにより、前記時
計用指針車に前記指針を固定する時計の指針固定構造に
おいて、前記指針取付軸の外周に複数の凸状山形部を形
成し、前記指針取付孔の内面に前記指針取付軸の凸状山
形部に対応する凹状部を形成し、前記凸状山形部と前記
凹状部の位置を合わせて前記指針取付孔を前記指針取付
軸に嵌合させることが可能であると共に、前記凸状山形
部の位置を前記指針取付孔の凹状部間の内面に合わせて
前記指針取付孔を前記指針取付軸に嵌合させることが可
能なものである。
【0008】
【発明の実施の形態】本発明の時計の指針固定構造にお
ける指針取付軸の外周には、複数の凸状山形部が形成さ
れており、また指針の指針取付孔の内面には、凸状山形
部に位置が対応する凹状部が設けられている。この指針
取付軸と指針取付孔は、その凸状山形部と凹状部の位置
を合わせて嵌合させることが可能であると共に、凸状山
形部の位置を凹状部間の内面に合わせて嵌合させること
も可能な外寸及び内寸に設定されている。
【0009】指針取付軸と指針取付孔を最初に嵌合させ
るときには、凸状山形部と凹状部の位置を合わせて嵌合
させ、指針取付軸の凸状山形部間の外面と指針取付孔の
凹状部間の内面とが圧接することにより指針を時計用指
針車に固定させる。このときに指針取付軸の凸状山形部
は、指針取付孔の凹状部内に入り込むことになるので、
凸状山形部が指針取付孔の内面を削り取ることもなく、
無理なく嵌合させることができる。
【0010】その後、再度又は数回繰り返して指針取付
軸と指針取付孔を嵌合させるときには、凸状山形部の位
置を指針取付孔の凹状部間の内面に合わせて嵌合させ、
凸状山形部を指針取付孔の凹状部間の内面に食い込ませ
て固定する。
【0011】このように、前の嵌合により既に寸法精度
にズレが生じている可能性がある部分での嵌合を避け、
より確実な固定力が得られる部分で嵌合させることによ
り、指針取付軸と指針取付孔を繰り返し嵌脱することを
可能にしている。
【0012】
【実施例】図1は本発明の一実施例に係る時計の指針固
定構造を示す縦断面図、図2はその要部拡大図である。
2は秒針を駆動する四番車等の指針車であり、その軸2
aの端部に秒針を取り付ける指針取付軸4が設けられて
いる。図2に示す要部のA−A断面を示す図3及び図4
に示すように、この指針取付軸4は、その横断面が円形
をなす丸軸からなる軸部4aと、この軸部4aの外周に
設けられた複数の凸状山形部4bと、から構成されてい
る。この凸状山形部4bは、軸部4aの外周面から径方
向に突出すると共に、後述する指針の圧入シロに相当す
る分だけ軸方向に線状に形成されている。
【0013】6は秒針等の指針であり、そのハカマ6a
には指針取付軸4に嵌合される指針取付孔8が設けられ
ている。この指針取付孔8は、本実施例においては凸状
山形部4bの数に対応する多角形状に設定されており、
凸状山形部4bの位置に対応するように凹状部8aを有
している。このように指針取付孔8が多角形をなすよう
に設定されていることから、凹状部8aは凸状山形部4
bに干渉しない山形をなすものとなっており、また、指
針取付孔8の凹状部8a間の内面8bは平面をなすもの
となっている。
【0014】この指針取付孔8の内面8b部分の内径
は、指針取付軸4の軸部4aの外径に等しいか又はそれ
より僅かに小さくなるように設定されており、また、指
針取付孔8の凹状部8a部分の内径は、指針取付軸4の
凸状山形部4b部分の外径に等しいか又はそれより僅か
に大きくなるように設定されている。
【0015】上記構成からなる本実施例の指針固定構造
において、最初に指針6を指針車2に固定するときに
は、図3に示すように、指針取付軸4の凸状山形部4b
と指針取付孔8の凹状部8aとの位置を合わせ、指針6
を押圧することにより指針取付軸4に指針取付孔8を嵌
合させる。このときに、指針取付軸4の軸部4aの外周
面と指針取付孔8の内面8bとが圧接され、指針6は指
針取付軸4に固定される。一方、このときに、凸状山形
部4bは凹状部8a内に入り込むことになり、この凸状
山形部4bと凹状部8aとが適合して回転止めとして作
用し、指針6の回転方向へのズレの発生を防止してい
る。
【0016】また、その後、指針6の脱落あるいはズレ
の修正等のため、再度又は繰り返し指針6を指針車2に
固定することが必要になった場合には、図4に示すよう
に、指針取付軸4の凸状山形部4bが指針取付孔8の内
面8bに合うように位置を合わせ、指針取付軸4に指針
取付孔8を嵌合させる。このときに、凸状山形部4bは
指針取付孔8の内面8bに食い込み、強固な固定力を生
じさせる。
【0017】指針取付軸4と指針取付孔8は、指針車2
と指針6の材質にも関係するが、最初の嵌合時に僅かな
がら変形あるいは寸法ズレが発生することがある。この
ため、一度嵌合させた位置に、指針取付軸4と指針取付
孔8を位置合わせして再度圧入して嵌合させても、当初
の固定力は得られないことがある。本実施例において
は、寸法精度が高い最初の嵌合時には、最も外寸が大き
い凸状山形部4bが設けられている部分を内寸が大きい
凹状部8aが設けられている部分に合わせて嵌合させて
圧接部分を少なくし、嵌合し易く且つ変形等を最小限に
押さえている。そして、寸法精度が低下している再度又
は繰り返しの嵌合時には、凸状山形部4bが設けられて
いる部分をほぼその凸状山形部4bの分だけ寸法が小さ
い凹状部8a間の内面8bがある部分に合わせて圧入嵌
合させ、多少の寸法のズレ等に影響されることなく、よ
り強力な固定力で固定させている。このため、繰り返し
指針取付軸4に指針取付孔8を嵌合させても、強固に取
り付けることが可能となる。
【0018】上記のような指針取付軸4と指針取付孔8
との嵌合作業は、互いの位置合わせが重要であるため、
指針取付孔8の凹状部8aの位置が外部から一目で判る
ように、この凹状部8aに対応する指針6のハカマ6a
の外周に線あるいは線状溝等からなるマーク6bを設け
ている。
【0019】図5は本発明の他の実施例に係る時計の指
針固定構造を示す要部拡大断面図である。本実施例で
は、指針6に指針取付軸14を形成し、指針車2の軸2
aの上端に指針取付孔18を形成している。この指針取
付軸14と指針取付孔18は、その構成、寸法等が前述
した実施例における指針取付軸4及び指針取付孔8と同
様に設定されている。即ち、指針取付軸14は、丸軸か
らなる軸部14aと、その外周に設けられ且つ径方向に
突出すると共に軸方向に線状に形成された複数の凸状山
形部14bと、から構成されている。また、指針取付孔
18は、凸状山形部14bの数に対応する多角形状をな
し、凸状山形部14bの位置に対応する凹状部18aを
有し、この凹状部18a間には平面からなる内面18b
が設けられている。また、指針取付孔18の内面18b
部分の内径は、指針取付軸14の軸部14aの外径に等
しいか又はそれより僅かに小さくなるように設定されて
おり、指針取付孔18の凹状部18a部分の内径は、指
針取付軸14の凸状山形部14b部分の外径に等しいか
又はそれより僅かに大きくなるように設定されている。
【0020】本実施例においても、最初に指針6を指針
車2に固定するときには、図6に示すように、指針取付
軸14の凸状山形部14bと指針取付孔18の凹状部1
8aとの位置を合わせ、指針6を押圧することにより指
針取付軸14を指針取付孔18に嵌合させる。また、再
度又は繰り返し指針6を指針車2に固定する場合には、
図7に示すように、指針取付軸14の凸状山形部14b
が指針取付孔18の内面18bに合うように位置を合わ
せ、指針取付軸14を指針取付孔18に嵌合させる。こ
のように嵌合させることにより、本実施例の構造におい
ても前述した実施例と同様に、繰り返し強固に指針6を
指針車2に取り付けることができる。
【0021】
【発明の効果】本発明によれば、指針取付軸の凸状山形
部と指針取付孔の凹状部との位置関係を変えることによ
り、最初の嵌合時及び再度又は繰り返しの嵌合時の何れ
においても、安定した固定力を得ることができる。
【0022】また、指針取付軸の凸状山形部と指針取付
孔の凹状部の位置を合わせて嵌合させた場合には、この
凸状山形部と凹状部が指針の回転方向に係合し、指針の
回転止めとしても作用するので、より確実に指針を指針
取付軸に固定することができる。
【0023】更に、最初の嵌合時及びその後の嵌合時の
何れにおいても、指針取付軸と指針取付孔とが圧接され
る部分は極めて少ないので、寸法公差をあまり厳しくし
なくても、容易に嵌合させることができ、部品の破損や
変形もなくなり、指針取付時の作業性も向上させること
ができる。
【0024】また、指針のハカマや時計用指針車の何れ
か、又は指針のハカマと時計用指針車の両方に、指針取
付孔の凹状部の位置を示すマークを設けることにより、
組立時の作業性を更に向上させることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece, in particular, a fixing structure for fixing a second hand to a pointer mounting portion of a timepiece wheel. 2. Description of the Related Art A conventional general second hand fixing structure is a press fitting in which a second hand having a round hole is covered with a hand attached to a pointer mounting shaft formed of a round shaft provided on a fourth wheel. It was fixed by making it work. [0003] However, such fitting of the round hole and the round shaft has a structure in which the upper curved surfaces are fixed to each other by being closely contacted with each other on the entire circumference, so that deformation due to slight displacement or impact is caused. Sometimes caused the fixing force to drop extremely. For this reason, if the press fit is increased in consideration of shock resistance and drop resistance, slight misalignment at the time of fitting may cause deformation of the pointer mounting shaft or breakage of the hook. In addition, if the round hole of the second hand has a bottom, the air in the round hole will not escape when fitted with the round shaft, making it difficult to fit, causing more deformation of the shaft and damage to the shark. Was to be done. Because of such a problem, it is very difficult to manage the dimensional tolerance in the fixing structure of the pointer for fitting the round hole and the round shaft. In order to solve the various problems caused by the fitting of the round hole and the round shaft as described above, the following prior arts have been proposed. Japanese Unexamined Utility Model Publication No. 1-168893 discloses that a convex chevron is provided on the outer periphery of a second hand mounting shaft.
In this chevron, the pointer mounting hole formed of a round hole is fitted while being deformed, and the pointer is fixed to the shaft. Japanese Unexamined Utility Model Publication No. 57-72116 discloses a structure in which a polygonal hole is provided in a pointer, and the polygonal hole is press-fitted to a pointer mounting shaft composed of a round shaft to fix the pointer to the shaft. Has become. Further, the structure disclosed in Japanese Utility Model Laid-Open Publication No. 57-83484 has a structure in which a mounting hole for a pointer formed of a round hole is fitted to a prismatic pointer shaft to fix the pointer to the shaft. In these prior arts, each is a fitting of a round hole or shaft and a chevron or a square shaft or hole with a corner, compared to a method of fitting a round hole and a round shaft. Since the surfaces do not come into close contact with each other over the entire circumference, they are easy to fit, and one is fitted so as to bite or deform into the other, so that the fixing force is high. [0005] In the above-mentioned prior art, the first press-fitting is performed satisfactorily. However, if re-attachment of the pointer occurs in the sword-attaching process or the like, it is already performed at the time of the first fitting. Since the hooks are deformed or the inner peripheral surface of the hole is scraped off, the fixing force may be greatly reduced due to dimensional deviation or deformation, and the hole may be pulled out even if the fitting is performed again. The present invention has been made in view of the above-mentioned problems of the prior art, and is not only easy to fit and strong in fixing force, but also
It is an object of the present invention to provide a timepiece pointer fixing structure capable of obtaining a strong fixing force even when it is repeatedly inserted and removed. In the timepiece fixing structure according to the present invention, a pointer mounting hole formed in one of the hands and the timepiece handpiece is fitted with a handpiece of the hands and the timepiece handwheel. By fitting to the pointer mounting shaft formed on the other side, in a pointer fixing structure of a timepiece for fixing the pointer to the timepiece wheel, a plurality of convex chevron portions are formed on the outer periphery of the pointer mounting shaft, A concave portion corresponding to the convex angle portion of the pointer mounting shaft is formed on the inner surface of the pointer mounting hole, and the position of the convex angle portion and the concave portion is aligned to fit the pointer mounting hole into the pointer mounting shaft. It is also possible to fit the pointer mounting hole to the pointer mounting shaft by aligning the position of the convex chevron with the inner surface between the concave portions of the pointer mounting hole. . DETAILED DESCRIPTION OF THE INVENTION A plurality of convex chevron portions are formed on the outer periphery of a pointer mounting shaft in a timepiece pointer fixing structure of the present invention. A concave portion whose position corresponds to the convex chevron is provided. The pointer mounting shaft and the pointer mounting hole can be fitted by aligning the positions of the convex chevron and concave portion, and by fitting the position of the convex chevron to the inner surface between the concave portions. The outer and inner dimensions are set so that they can be made to work. When the pointer mounting shaft and the pointer mounting hole are first fitted, the positions of the convex angled portion and the concave portion are aligned and fitted, and the outer surface between the convex angled portion of the pointer mounting shaft and the needle mounting hole is fitted. The hand is fixed to the timepiece wheel by the pressure contact with the inner surface between the concave portions. At this time, the convex angled portion of the pointer mounting shaft enters the concave portion of the pointer mounting hole,
The convex chevron does not scrape the inner surface of the pointer mounting hole,
It can be fitted without difficulty. Thereafter, when fitting the pointer mounting shaft and the pointer mounting hole again or repeatedly several times, the position of the convex chevron is aligned with the inner surface between the concave portions of the pointer mounting hole, and the fitting is performed.
The convex chevron is cut into the inner surface between the concaves of the pointer mounting hole and fixed. As described above, the fitting at a portion where the dimensional accuracy may have already been displaced by the previous fitting is avoided.
By fitting at a portion where a more secure fixing force can be obtained, the pointer mounting shaft and the pointer mounting hole can be repeatedly fitted and removed. FIG. 1 is a longitudinal sectional view showing a timepiece hand fixing structure according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part thereof.
Reference numeral 2 denotes a pointer wheel such as a fourth wheel that drives the second hand, and its axis 2
A pointer attachment shaft 4 for attaching the second hand is provided at the end of the pointer a. 3 and 4 showing the AA cross section of the main part shown in FIG.
As shown in FIG. 2, the pointer mounting shaft 4 is composed of a shaft portion 4a formed of a round shaft having a circular cross section, and a plurality of convex chevron portions 4b provided on the outer periphery of the shaft portion 4a. ing. The convex chevron portion 4b protrudes radially from the outer peripheral surface of the shaft portion 4a, and is linearly formed in the axial direction by an amount corresponding to a press-fitting sill of a pointer described later. Reference numeral 6 denotes a pointer such as a second hand.
Is provided with a pointer mounting hole 8 to be fitted to the pointer mounting shaft 4. In this embodiment, the pointer mounting hole 8 is set in a polygonal shape corresponding to the number of the convex chevron portions 4b.
A concave portion 8a is provided so as to correspond to the position of the convex chevron 4b. Since the pointer mounting hole 8 is set to form a polygon as described above, the concave portion 8a is
The inner surface 8b between the concave portions 8a of the pointer mounting hole 8 is flat. The inner diameter of the inner surface 8b of the pointer mounting hole 8 is set to be equal to or slightly smaller than the outer diameter of the shaft portion 4a of the pointer mounting shaft 4. The inner diameter of the concave portion 8a is set to be equal to or slightly larger than the outer diameter of the convex angled portion 4b of the pointer mounting shaft 4. In the pointer fixing structure of this embodiment having the above-described configuration, when the pointer 6 is first fixed to the pointer wheel 2, as shown in FIG.
And the concave portion 8a of the pointer mounting hole 8 are aligned.
By pressing, the pointer mounting hole 8 is fitted to the pointer mounting shaft 4. At this time, the outer peripheral surface of the shaft portion 4a of the pointer mounting shaft 4 is pressed against the inner surface 8b of the pointer mounting hole 8, and the pointer 6 is fixed to the pointer mounting shaft 4. On the other hand, at this time, the convex chevron 4b enters the concave part 8a, and the convex chevron 4b and the concave part 8a are fitted to each other to act as a rotation stopper, and the pointer 6 in the rotational direction of the pointer 6 is rotated. Prevents displacement. Then, if it becomes necessary to fix the pointer 6 to the pointer wheel 2 again or repeatedly to correct the dropping or displacement of the pointer 6, as shown in FIG. The position is adjusted so that the convex chevron portion 4b of the shaft 4 matches the inner surface 8b of the pointer mounting hole 8, and the pointer mounting hole 8 is fitted to the pointer mounting shaft 4. At this time, the convex chevron 4b bites into the inner surface 8b of the pointer mounting hole 8 to generate a strong fixing force. The pointer mounting shaft 4 and the pointer mounting hole 8 are
Although it depends on the material of the pointer 6, a slight deformation or dimensional deviation may occur during the first fitting. For this reason, even if the pointer mounting shaft 4 and the pointer mounting hole 8 are aligned and press-fitted and fitted again to the position where they have been fitted once, the initial fixing force may not be obtained. In the present embodiment, at the time of the first fitting with high dimensional accuracy, the portion provided with the largest convex outer convex portion 4b is fitted to the portion provided with the larger concave inner portion 8a. In this way, the pressure contact portion is reduced to facilitate the fitting and minimize the deformation and the like. Then, at the time of re-fitting or repeated fitting in which the dimensional accuracy is reduced, the inner surface 8b between the concave portions 8a having a smaller size by the convex angled portion 4b is substantially replaced by the portion provided with the convex angled portion 4b. It is press-fitted in accordance with a certain part, and is fixed with a stronger fixing force without being affected by a slight displacement of dimensions. For this reason, even if the pointer mounting hole 8 is repeatedly fitted to the pointer mounting shaft 4, the pointer can be firmly mounted. The pointer mounting shaft 4 and the pointer mounting hole 8 as described above.
Since it is important to align each other,
The hook 6a of the pointer 6 corresponding to the concave portion 8a allows the position of the concave portion 8a of the pointer mounting hole 8 to be seen at a glance from the outside.
Is provided with a mark 6b composed of a line or a linear groove or the like on the outer periphery. FIG. 5 is an enlarged sectional view showing a main part of a timepiece fixing structure according to another embodiment of the present invention. In this embodiment, a pointer mounting shaft 14 is formed on the pointer 6, and the shaft 2 of the pointer wheel 2 is formed.
A pointer mounting hole 18 is formed at the upper end of a. The configuration, dimensions, and the like of the pointer mounting shaft 14 and the pointer mounting hole 18 are set in the same manner as the pointer mounting shaft 4 and the pointer mounting hole 8 in the above-described embodiment. That is, the pointer mounting shaft 14 is composed of a shaft portion 14a formed of a round shaft, and a plurality of convex mountain portions 14b provided on the outer periphery thereof and projecting in the radial direction and formed linearly in the axial direction. ing. Further, the pointer mounting hole 18 has a polygonal shape corresponding to the number of the convex chevrons 14b, has concave portions 18a corresponding to the positions of the convex chevrons 14b, and has a flat surface between the concave portions 18a. Inner surface 18b
Is provided. Also, the inner surface 18b of the pointer mounting hole 18
The inner diameter of the portion is set to be equal to or slightly smaller than the outer diameter of the shaft portion 14a of the pointer mounting shaft 14, and the inner diameter of the concave portion 18a of the pointer mounting hole 18 is set to Is set to be equal to or slightly larger than the outer diameter of the convex chevron portion 14b of. In this embodiment, when the pointer 6 is first fixed to the pointer wheel 2, as shown in FIG. 6, the convex angled portion 14b of the pointer mounting shaft 14 and the concave portion 1 of the pointer mounting hole 18 are used.
By aligning the position with 8 a and pressing the pointer 6, the pointer mounting shaft 14 is fitted into the pointer mounting hole 18. When fixing the pointer 6 to the pointer wheel 2 again or repeatedly,
As shown in FIG. 7, the convex angled portion 14b of the pointer mounting shaft 14
Is aligned with the inner surface 18b of the pointer mounting hole 18, and the pointer mounting shaft 14 is fitted into the pointer mounting hole 18. By fitting in this manner, the pointer 6 can be repeatedly and firmly attached to the pointer wheel 2 in the structure of the present embodiment, similarly to the above-described embodiment. According to the present invention, by changing the positional relationship between the convex angled portion of the pointer mounting shaft and the concave portion of the pointer mounting hole, it is possible to fit the first time and again or repeatedly. In any case, a stable fixing force can be obtained. In the case where the convex angled portion of the pointer mounting shaft and the concave portion of the pointer mounting hole are fitted and fitted, the convex angled portion and the concave portion engage in the rotating direction of the pointer. Since it also acts as a rotation stopper for the pointer, the pointer can be more reliably fixed to the pointer mounting shaft. Further, in both the initial fitting and the subsequent fitting, the portion where the pointer mounting shaft and the pointer mounting hole are pressed against each other is extremely small, so that it is easy to reduce the dimensional tolerances so much. The parts can be fitted without being damaged or deformed, and the workability at the time of attaching the pointer can be improved. In addition, a mark indicating the position of the concave portion of the pointer mounting hole is provided on any of the indicator handpiece and the watch hand wheel, or both the hand indicator hand and the watch hand wheel.
Workability during assembly can be further improved.
【図面の簡単な説明】
【図1】本発明の一実施例に係る時計の指針固定構造を
示す縦断面図である。
【図2】図1に示す時計の指針固定構造の要部拡大図で
ある。
【図3】図2に示す時計の指針固定構造における最初の
嵌合時の状態を示すA−A断面図である。
【図4】図2に示す時計の指針固定構造における再度又
は繰り返しの嵌合時の状態を示すA−A断面図である。
【図5】本発明の他の実施例に係る時計の指針固定構造
を示す要部拡大断面図である。
【図6】図5に示す時計の指針固定構造における最初の
嵌合時の状態を示すB−B断面図である。
【図7】図5に示す時計の指針固定構造における再度又
は繰り返しの嵌合時の状態を示すB−B断面図である。
【符号の説明】
2 指針車
4、14 指針取付軸
4a、14a 軸部
4b、14b 凸状山形部
6 指針
6a ハカマ
6b マーク
8、18 指針取付孔
8a、18a 凹状部
8b、18b 内面BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a timepiece fixing structure according to an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of the hand holding structure of the timepiece shown in FIG. 1; FIG. 3 is a cross-sectional view taken along the line AA, showing a state at the time of the first fitting in the pointer fixing structure of the timepiece shown in FIG. FIG. 4 is a sectional view taken along line AA of the timepiece fixing structure of the timepiece shown in FIG. FIG. 5 is an enlarged cross-sectional view of a main part of a timepiece fixing structure according to another embodiment of the present invention. 6 is a BB cross-sectional view showing a state at the time of the first fitting in the pointer fixing structure of the timepiece shown in FIG. 5; FIG. 7 is a sectional view taken along the line BB of the timepiece fixing structure of the timepiece shown in FIG. [Description of Signs] 2 Pointer Wheels 4, 14 Pointer Mounting Shafts 4a, 14a Shafts 4b, 14b Convex Angles 6 Pointers 6a Hooks 6b Marks 8, 18 Pointer Mounting Holes 8a, 18a Recessed Parts 8b, 18b Inner Surface
Claims (1)
成された指針取付孔を、指針及び時計用指針車のうちの
他方に形成された指針取付軸に嵌合させることにより、
前記時計用指針車に前記指針を固定する時計の指針固定
構造において、 前記指針取付軸の外周に複数の凸状山形部を形成し、 前記指針取付孔の内面に前記指針取付軸の凸状山形部に
対応する凹状部を形成し、 前記凸状山形部と前記凹状部の位置を合わせて前記指針
取付孔を前記指針取付軸に嵌合させることが可能である
と共に、 前記凸状山形部の位置を前記指針取付孔の凹状部間の内
面に合わせて前記指針取付孔を前記指針取付軸に嵌合さ
せることが可能であることを特徴とする時計の指針固定
構造。(57) [Claims] (1) A pointer mounting hole formed in one of the hands and the clock wheel is attached to a pointer mounting shaft formed in the other of the hands and the clock wheel. By fitting to
In a timepiece fixing structure for fixing the hands to the timepiece wheel, a plurality of convex chevron portions are formed on the outer periphery of the hand mounting shaft, and the convex chevron of the hands mounting shaft is formed on an inner surface of the hand mounting hole. A concave portion corresponding to the convex portion is formed, and the position of the convex portion and the concave portion can be aligned to fit the pointer mounting hole to the pointer mounting shaft. A pointer fixing structure for a timepiece, wherein a position of the pointer mounting hole can be fitted to the pointer mounting shaft by adjusting a position to an inner surface between concave portions of the pointer mounting hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36780197A JP3481844B2 (en) | 1997-12-30 | 1997-12-30 | Clock pointer fixing structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36780197A JP3481844B2 (en) | 1997-12-30 | 1997-12-30 | Clock pointer fixing structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11194175A JPH11194175A (en) | 1999-07-21 |
JP3481844B2 true JP3481844B2 (en) | 2003-12-22 |
Family
ID=18490228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP36780197A Expired - Fee Related JP3481844B2 (en) | 1997-12-30 | 1997-12-30 | Clock pointer fixing structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3481844B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1519159A1 (en) * | 2003-09-26 | 2005-03-30 | Microcomponents SA | Structure of a micro-motor for a needle indicator |
JP5631033B2 (en) | 2009-11-09 | 2014-11-26 | 矢崎総業株式会社 | Rotating shaft pointer mounting structure and meter device |
JP2012206610A (en) * | 2011-03-30 | 2012-10-25 | Nippon Wiper Blade Co Ltd | Wiper arm |
-
1997
- 1997-12-30 JP JP36780197A patent/JP3481844B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH11194175A (en) | 1999-07-21 |
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