JP6855767B2 - Pointer device and clock - Google Patents

Pointer device and clock Download PDF

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JP6855767B2
JP6855767B2 JP2016232904A JP2016232904A JP6855767B2 JP 6855767 B2 JP6855767 B2 JP 6855767B2 JP 2016232904 A JP2016232904 A JP 2016232904A JP 2016232904 A JP2016232904 A JP 2016232904A JP 6855767 B2 JP6855767 B2 JP 6855767B2
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pointer
fitting hole
fixing portion
fitting
pointer shaft
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JP2018091648A (en
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彩子 ▲辻▼
彩子 ▲辻▼
満紀 鈴木
満紀 鈴木
孝征 新藤
孝征 新藤
幸喜 有田
幸喜 有田
義樹 中塚
義樹 中塚
陽作 石井
陽作 石井
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Casio Computer Co Ltd
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Casio Computer Co Ltd
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Description

この発明は、時計や計器などに用いられる指針装置およびそれを備えた時計に関する。 The present invention relates to a pointer device used for a clock, an instrument, or the like, and a clock provided with the pointer device.

例えば、時計においては、特許文献１に記載されているように、指針軸に指針を取り付け、この指針を指針軸の回転に応じて運針させることにより、指針が時刻を指示するように構成されたものが知られている。 For example, in a timepiece, as described in Patent Document 1, a pointer is attached to a pointer shaft, and the pointer is moved according to the rotation of the pointer shaft so that the pointer indicates the time. Things are known.

実開昭６４−１５９８９号公報 このような時計の指針は、針本体を金属で形成し、この針本体にハカマと称する合成樹脂製の固定部をカシメ加工によって一体的に取り付け、この固定部に設けられた取付孔に指針軸を嵌着させることにより、固定部が指針軸と共に回転して針本体が運針するように構成されている。Jikkai Sho 64-15989 The pointer of such a watch is such that the needle body is made of metal, and a synthetic resin fixing part called a hakama is integrally attached to the hand body by caulking, and the fixing part is attached to the fixing part. By fitting the pointer shaft into the provided mounting hole, the fixing portion rotates together with the pointer shaft so that the needle body moves.

しかしながら、このような時計の指針では、針本体を金属で形成し、ハカマと称する固定部を針本体の材料と異なる合成樹脂で形成した構成であるから、固定部によって針本体が形状の制約を受けることになり、このため針本体を自由な形状に形成することができず、デザイン性に乏しいばかりか、金属製の針本体によって重量が重くなるという問題がある。 However, in such a watch pointer, the hand body is made of metal and the fixing part called a hakama is made of a synthetic resin different from the material of the hand body. Therefore, the fixing part restricts the shape of the hand body. Therefore, the needle body cannot be formed into a free shape, and not only the design is poor, but also the metal needle body increases the weight.

また、このような時計の指針では、針本体を合成樹脂で形成し、ハカマと称する固定部を金属で形成した構成のものも知られているが、このような構成のものでも、上述した構成のものと同様、固定部によって針本体が形状の制約を受けるため、針本体を自由な形状に形成することができず、デザイン性に乏しいばかりか、金属製の固定部によって重量が重くなるという問題が生じる。 Further, in such a timepiece pointer, there is also known a structure in which the hand body is made of synthetic resin and the fixing portion called a hakama is made of metal. However, even in such a structure, the above-mentioned structure is also known. Since the needle body is constrained by the shape of the fixed part, the needle body cannot be formed into a free shape, and not only is the design poor, but the metal fixing part makes the weight heavier. Problems arise.

この発明が解決しようとする課題は、デザイン性を高め、かつ軽量化を図ることができる指針装置およびそれを備えた時計を提供することである。 An object to be solved by the present invention is to provide a pointer device capable of enhancing design and weight reduction, and a timepiece provided with the pointer device.

この発明は、針本体と、指針軸と、前記指針軸に固定される固定部と、を備え、前記固定部は、前記固定部の中心部に設けられて内周面が非円形状に形成された嵌合孔を有し前記指針軸に対して非回転状態で取り付けられる回転止め部と、前記嵌合孔の外周から所定の距離離間した位置に形成された円弧状のスリット孔を含む逃し部と、を備え、前記指針軸に対して非回転状態で取り付けられる回転止め部を備え、前記針本体と前記固定部とを合成樹脂で一体に形成したことを特徴とする指針装置である。 The present invention includes a needle body, a pointer shaft, and a fixing portion fixed to the pointer shaft. The fixing portion is provided at the center of the fixing portion and the inner peripheral surface is formed in a non-circular shape. relief including a rotation stopping portion attached nonrotatably relative the the pointer shaft has a fitting hole that is, the fitting hole arcuate slit hole formed at a predetermined distance spaced apart position from the outer circumference of the The pointer device is provided with a portion and a rotation stop portion which is attached to the pointer shaft in a non-rotating state, and the needle body and the fixing portion are integrally formed of synthetic resin.

この発明によれば、固定部によって針本体が形状の制約を受けることがなく、針本体と固定部とを自由な形状に形成することができるので、デザイン性を高めることができると共に、軽量化を図ることができる。 According to the present invention, the needle body is not restricted in shape by the fixing portion, and the needle body and the fixing portion can be formed in a free shape, so that the design can be improved and the weight can be reduced. Can be planned.

この発明を腕時計に適用した一実施形態を示した拡大正面図である。It is an enlarged front view which showed one Embodiment which applied this invention to a wristwatch. 図１に示された腕時計における指針および指針軸を示した要部の拡大正面図である。It is an enlarged front view of the main part which showed the pointer and the pointer axis in the wristwatch shown in FIG. 図２に示された指針および指針軸のＡ−Ａ矢視における要部を示した拡大断面図である。FIG. 5 is an enlarged cross-sectional view showing a main part of the pointer and the pointer axis shown in FIG. 図３に示された指針と指針軸とを分解して示した要部の拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a main part shown by disassembling the pointer and the pointer shaft shown in FIG. 図２に示された指針を示し、（ａ）はその拡大正面図、（ｂ）はその指針のＢ−Ｂ矢視における拡大断面図である。The pointer shown in FIG. 2 is shown, (a) is an enlarged front view of the pointer, and (b) is an enlarged cross-sectional view of the pointer in view of the arrow BB. 図５に示された指針の各断面を示し、（ａ）は図５（ａ）に示された指針のＣ−Ｃ矢視における要部の拡大断面図、（ｂ）は図５（ａ）に示された指針のＤ−Ｄ矢視における要部の拡大断面図である。Each cross section of the pointer shown in FIG. 5 is shown, (a) is an enlarged cross-sectional view of a main part of the pointer shown in FIG. 5 (a) in the CC arrow view, and (b) is FIG. 5 (a). It is an enlarged cross-sectional view of the main part in the DD arrow view of the pointer shown in.

以下、図１〜図６を参照して、この発明を腕時計に適用した一実施形態について説明する。
この腕時計は、図１に示すように、腕時計ケース１を備えている。この腕時計ケース１は、その３時側に竜頭などのスイッチ部２が設けられ、１２時側と６時側とに時計バンド３が取り付けられた構成になっている。 Hereinafter, an embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. 1 to 6.
As shown in FIG. 1, this wristwatch includes a wristwatch case 1. The wristwatch case 1 has a configuration in which a switch portion 2 such as a crown is provided on the 3 o'clock side, and a watch band 3 is attached to the 12 o'clock side and the 6 o'clock side.

また、この腕時計ケース１は、図１に示すように、その上部開口部に時計ガラス４が取り付けられ、下部に裏蓋（図示せず）が取り付けられた構成になっている。この腕時計ケース１の内部には、時計モジュール５が収納されている。この時計モジュール５は、指針６を運針させて時刻を指示する時計ムーブメント（図示せず）、時刻などの情報を電気光学的に表示する表示部７、およびこれらを駆動する回路部などの時計機能に必要な各種の電子部品（いずれも図示せず）を備えている。 Further, as shown in FIG. 1, the wristwatch case 1 has a configuration in which a watch glass 4 is attached to an upper opening thereof and a back cover (not shown) is attached to a lower portion thereof. A watch module 5 is housed inside the watch case 1. The clock module 5 has clock functions such as a clock movement (not shown) that moves the pointer 6 to indicate the time, a display unit 7 that electro-optically displays information such as the time, and a circuit unit that drives them. It is equipped with various electronic components (none of which are shown) necessary for the clock.

ところで、この腕時計の指針６は、図１に示すように、時針８と分針９とを備えている。この指針６は、図２〜図４に示すように、指針軸１０にそれぞれ取り付けられ、これらの指針軸１０の回転に応じてそれぞれ運針するように構成されている。この場合、指針６が指針軸１０に取り付けられることにより、指針装置が構成されている。 By the way, as shown in FIG. 1, the pointer 6 of this wristwatch includes an hour hand 8 and a minute hand 9. As shown in FIGS. 2 to 4, the pointers 6 are attached to the pointer shafts 10 and are configured to move the hands according to the rotation of the pointer shafts 10. In this case, the pointer device is configured by attaching the pointer 6 to the pointer shaft 10.

また、指針軸１０は、図１に示すように、時針８が取り付けられる筒車である時針車の時針軸と、この時針軸に挿入されて分針９が取り付けられる二番車である分針車の分針軸と、を備えている。これら指針軸１０は、金属または硬質の合成樹脂によって形成されている。 Further, as shown in FIG. 1, the pointer shaft 10 is the hour hand shaft of the hour hand wheel, which is a cylinder wheel to which the hour hand 8 is attached, and the minute hand wheel, which is the second wheel inserted into the hour hand shaft and to which the minute hand 9 is attached. It is equipped with a minute hand shaft. The pointer shaft 10 is made of a metal or a hard synthetic resin.

指針６である時針８と分針９とのうち、例えば、分針９は、図２〜図５に示すように、針本体１１と、指針軸１０に固定される固定部１２と、を備え、これらがＡＢＳ樹脂、ポリカーボネート樹脂（ＰＣ）などの硬質の合成樹脂によって一体に成型された構成になっている。 Of the hour hand 8 and the minute hand 9 which are the pointer 6, for example, the minute hand 9 includes a hand body 11 and a fixing portion 12 fixed to the pointer shaft 10 as shown in FIGS. 2 to 5. Is integrally molded with a hard synthetic resin such as ABS resin and polycarbonate resin (PC).

この場合、針本体１１は、図５（ａ）および図５（ｂ）に示すように、固定部１２の外周端部から側方に延出されたほぼ帯板状に形成されている。すなわち、この針本体１１は、固定部１２から延出された先端側（図５（ａ）では右側）に向けて次第に細くなるように長く形成されている。 In this case, as shown in FIGS. 5A and 5B, the needle body 11 is formed in a substantially strip shape extending laterally from the outer peripheral end portion of the fixing portion 12. That is, the needle body 11 is formed long so as to gradually become thinner toward the tip side (right side in FIG. 5A) extending from the fixing portion 12.

また、この針本体１１は、図５（ｂ）および図６（ｂ）に示すように、その外周縁に補強壁１１ａが、固定部１２に対応する箇所を除いて、そのほぼ全周に亘って枠状に一体に形成された構成になっている。この補強壁１１ａは、針本体１１の肉厚を薄く形成しても、針本体１１の剛性を確保するように構成されている。 Further, as shown in FIGS. 5 (b) and 6 (b), the needle body 11 has a reinforcing wall 11a on the outer peripheral edge thereof over almost the entire circumference except for a portion corresponding to the fixing portion 12. It has a structure that is integrally formed in a frame shape. The reinforcing wall 11a is configured to ensure the rigidity of the needle body 11 even if the thickness of the needle body 11 is thinly formed.

このため、この補強壁１１ａは、図５（ｂ）および図６（ｂ）に示すように、針本体１１が先細のほぼ帯板状に形成されていても、針本体１１の撓みや捩れを防ぐように構成されている。これにより、針本体１１は、その肉厚が薄く形成されて針本体１１の重量が軽くなるように構成されている。 Therefore, as shown in FIGS. 5 (b) and 6 (b), the reinforcing wall 11a causes the needle body 11 to bend or twist even if the needle body 11 is formed in a tapered substantially strip shape. It is configured to prevent. As a result, the needle body 11 is formed so that the wall thickness is thin and the weight of the needle body 11 is lightened.

固定部１２は、図２〜図５に示すように、ほぼ円板状に形成され、針本体１１の端部１１ｂ（図５（ａ）では左端部）に連結された状態で一体に形成されている。また、この固定部１２は、その外周端部に装飾部１３が針本体１１と反対側に突出した状態で一体に形成されている。 As shown in FIGS. 2 to 5, the fixing portion 12 is formed in a substantially disk shape, and is integrally formed in a state of being connected to the end portion 11b of the needle body 11 (the left end portion in FIG. 5A). ing. Further, the fixing portion 12 is integrally formed at the outer peripheral end portion thereof with the decorative portion 13 protruding to the opposite side of the needle body 11.

一方、この固定部１２は、図２〜図４に示すように、指針軸１０に対して非回転状態で取り付けられる回転止め部１４と、指針軸１０に対する軸方向への抜け出しを阻止する抜止め部１５と、を備えている。回転止め部１４は、固定部１２の中心部に設けられて、指針軸１０の嵌入部１０ａが嵌合する嵌合孔１４ａを備えている。 On the other hand, as shown in FIGS. 2 to 4, the fixing portion 12 has a rotation stop portion 14 that is attached to the pointer shaft 10 in a non-rotating state and a retainer that prevents the pointer shaft 10 from coming off in the axial direction. It is provided with a unit 15. The rotation stop portion 14 is provided in the central portion of the fixing portion 12, and includes a fitting hole 14a into which the fitting portion 10a of the pointer shaft 10 is fitted.

すなわち、嵌合孔１４ａは、図２および図５（ａ）に示すように、その内周面が八角形に形成されているが、八角形以上の多角形に形成されていることが望ましい。また、指針軸１０の嵌入部１０ａは、その外周面が嵌合孔１４ａと同じ大きさの八角形に形成されているが、嵌合孔１４ａと同様、八角形以上の多角形に形成されていることが望ましい。 That is, as shown in FIGS. 2 and 5A, the inner peripheral surface of the fitting hole 14a is formed in an octagonal shape, but it is desirable that the fitting hole 14a is formed in a polygonal shape of an octagon or more. The outer peripheral surface of the fitting portion 10a of the pointer shaft 10 is formed in an octagonal shape having the same size as the fitting hole 14a, but is formed in a polygonal shape equal to or larger than the octagonal shape like the fitting hole 14a. It is desirable to be there.

これにより、回転止め部１４は、図２および図３に示すように、指針軸１０の嵌入部１０ａが固定部１２の嵌合孔１４ａに嵌入すると、嵌合孔１４ａの八角形以上の多角形と嵌入部１０ａの八角形以上の多角形とが噛み合うことにより、固定部１２が指針軸１０に対して非回転状態で取り付けられるように構成されている。 As a result, as shown in FIGS. 2 and 3, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, the rotation stop portion 14 has an octagonal or larger polygonal shape of the fitting hole 14a. The fixing portion 12 is configured to be attached to the pointer shaft 10 in a non-rotating state by engaging with the octagonal or larger polygon of the fitting portion 10a.

この場合、固定部１２の中心部の下面には、図３、図４、図５（ｂ）および図６（ａ）に示すように、円筒形状のガイド筒部１６が嵌合孔１４ａと同一軸上に対応した状態で固定部１２と一体に形成されている。このガイド筒部１６は、固定部１２の下面側に位置する内径が嵌合孔１４ａの内径とほぼ同じ大きさで、固定部１２の下面から下側に向かうに従って次第にガイド筒部１６の内径が大きくなるように形成されている。 In this case, on the lower surface of the central portion of the fixing portion 12, as shown in FIGS. 3, 4, 5 (b) and 6 (a), the cylindrical guide cylinder portion 16 is the same as the fitting hole 14a. It is integrally formed with the fixing portion 12 in a state corresponding to the shaft. The inner diameter of the guide cylinder portion 16 located on the lower surface side of the fixing portion 12 is substantially the same as the inner diameter of the fitting hole 14a, and the inner diameter of the guide cylinder portion 16 gradually increases from the lower surface of the fixing portion 12 toward the lower side. It is formed to be large.

また、このガイド筒部１６は、図３および図４に示すように、その軸方向つまり上下方向の長さが、針本体１１の補強壁１１ａの上下方向の長さよりも長く形成されている。これにより、ガイド筒部１６は、その下側から指針軸１０の嵌入部１０ａが固定部１２の嵌合孔１４ａに嵌入する際に、指針軸１０の嵌入部１０ａをガイド筒部１６の内周面でガイドしながら、指針軸１０の嵌入部１０ａを固定部１２の嵌合孔１４ａに導いて確実にかつ容易に嵌合させるように構成されている。 Further, as shown in FIGS. 3 and 4, the guide cylinder portion 16 is formed so that its axial direction, that is, the length in the vertical direction is longer than the length in the vertical direction of the reinforcing wall 11a of the needle body 11. As a result, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, the guide cylinder portion 16 inserts the fitting portion 10a of the guide shaft 10 into the inner circumference of the guide cylinder portion 16. The fitting portion 10a of the pointer shaft 10 is guided to the fitting hole 14a of the fixing portion 12 while being guided by the surface, and is configured to be securely and easily fitted.

一方、抜止め部１５は、図３、図４および図６（ａ）に示すように、固定部１２の嵌合孔１４ａの内周面に設けられて、指針軸１０の嵌入部１０ａの外周面に設けられた係止部１５ｂに係合する規制部１５ａを備えている。この規制部１５ａは、固定部１２の嵌合孔１４ａの内面に突出して設けられた断面三角形状の突起部である。係止部１５ｂは、指針軸１０の外周に環状に設けられたＶ字形状の溝部である。 On the other hand, as shown in FIGS. 3, 4 and 6 (a), the retaining portion 15 is provided on the inner peripheral surface of the fitting hole 14a of the fixing portion 12, and is provided on the outer peripheral surface of the fitting portion 10a of the pointer shaft 10. A regulating portion 15a that engages with a locking portion 15b provided on the surface is provided. The restricting portion 15a is a protruding portion having a triangular cross section provided so as to project from the inner surface of the fitting hole 14a of the fixing portion 12. The locking portion 15b is a V-shaped groove portion provided in an annular shape on the outer circumference of the pointer shaft 10.

これにより、抜止め部１５は、図３および図４に示すように、固定部１２の嵌合孔１４ａに指針軸１０の嵌入部１０ａが嵌合した際に、嵌合孔１４ａの内周面に設けられた規制部１５ａが指針軸１０の嵌入部１０ａの外周面に設けられた係止部１５ｂに係合することにより、指針軸１０に対する固定部１２の軸方向の位置を規制して、固定部１２が指針軸１０から抜け出さないように構成されている。 As a result, as shown in FIGS. 3 and 4, the retaining portion 15 has an inner peripheral surface of the fitting hole 14a when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12. By engaging the restricting portion 15a provided on the guide shaft 10 with the locking portion 15b provided on the outer peripheral surface of the fitting portion 10a of the pointer shaft 10, the axial position of the fixing portion 12 with respect to the pointer shaft 10 is regulated. The fixing portion 12 is configured so as not to come off from the pointer shaft 10.

また、固定部１２には、図２、図５（ａ）および図６（ａ）に示すように、嵌合孔１４ａに指針軸１０の嵌入部１０ａを嵌入させる際に、嵌合孔１４ａが弾力的に押し広げられるように、嵌合孔１４ａを変形させるための逃し部１７が設けられている。この逃し部１７は、嵌合孔１４ａの外周から針本体１１の長手方向に対して直交する方向に離れた位置に設けた複数のスリット孔であり、嵌合孔１４ａを中心として嵌合孔１４ａの外周に沿う円弧状に形成されている。 Further, as shown in FIGS. 2, 5 (a) and 6 (a), the fixing portion 12 has a fitting hole 14a when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a. A relief portion 17 for deforming the fitting hole 14a is provided so that the fitting hole 14a can be elastically expanded. The relief portion 17 is a plurality of slit holes provided at positions separated from the outer circumference of the fitting hole 14a in a direction orthogonal to the longitudinal direction of the needle body 11, and the fitting hole 14a is centered on the fitting hole 14a. It is formed in an arc shape along the outer circumference of.

これにより、固定部１２の嵌合孔１４ａは、図２、図５（ａ）および図６（ａ）に示すように、その嵌合孔１４ａに指針軸１０の嵌入部１０ａが嵌入して、嵌合孔１４ａの規制部１５ａが嵌入部１０ａの係止部１５ｂに係合する際に、逃し部１７である複数のスリット孔が固定部１２の径方向に収縮変形することにより、嵌合孔１４ａを弾力的に押し広げるように変形させて、指針軸１０の嵌入部１０ａの係合部１５ｂに嵌合孔１４ａの規制部１５ａを係合させ易くするように構成されている。 As a result, as shown in FIGS. 2, 5 (a) and 6 (a), the fitting hole 14a of the fixing portion 12 is fitted with the fitting portion 10a of the pointer shaft 10 into the fitting hole 14a. When the restricting portion 15a of the fitting hole 14a engages with the locking portion 15b of the fitting portion 10a, the plurality of slit holes, which are the relief portions 17, are contracted and deformed in the radial direction of the fixing portion 12, so that the fitting hole is formed. The 14a is deformed so as to be elastically expanded so that the restricting portion 15a of the fitting hole 14a can be easily engaged with the engaging portion 15b of the fitting portion 10a of the pointer shaft 10.

一方、固定部１２の装飾部１３は、図２および図５に示すように、固定部１２にその外周端部から針本体１１と反対側に向けて突出した状態で一体に形成されている。すなわち、この装飾部１３は、固定部１２の外周にほぼ扇形状に形成されている。この装飾部１３には、円形状およびほぼ四角形状の複数の装飾凹部１８が固定部１２の外周に沿って形成されている。また、この装飾部１３は、固定部１２を中心とする針本体１１の重量バランスをとるように形成されている。 On the other hand, as shown in FIGS. 2 and 5, the decorative portion 13 of the fixing portion 12 is integrally formed with the fixing portion 12 in a state of protruding from the outer peripheral end portion thereof toward the side opposite to the needle body 11. That is, the decorative portion 13 is formed in a substantially fan shape on the outer periphery of the fixed portion 12. A plurality of circular and substantially square decorative recesses 18 are formed in the decorative portion 13 along the outer circumference of the fixed portion 12. Further, the decorative portion 13 is formed so as to balance the weight of the needle body 11 centered on the fixing portion 12.

この場合、固定部１２と装飾部１３との各外周縁には、図３、図４、図５（ｂ）、および図６（ａ）に示すように、補強壁１２ａ、１３ａがこれらのほぼ全周に亘って枠状に一体に形成されている。すなわち、これら補強壁１２ａ、１３ａは、針本体１１の補強部１１ａに連続した状態で全周に亘って一体に形成されている。 In this case, as shown in FIGS. 3, 4, 5 (b), and 6 (a), reinforcing walls 12a and 13a are substantially formed on the outer peripheral edges of the fixing portion 12 and the decorative portion 13. It is integrally formed in a frame shape over the entire circumference. That is, these reinforcing walls 12a and 13a are integrally formed over the entire circumference in a state of being continuous with the reinforcing portion 11a of the needle body 11.

また、これら補強壁１２ａ、１３ａは、図３、図４、図５（ｂ）および図６（ａ）に示すように、その上下方向（厚み方向）の長さが、針本体１１の補強壁１１ａの上下方向の長さよりも長く、かつ固定部１２の下面に設けられたガイド筒部１６の上下方向の長さよりも短い長さで形成されている。 Further, as shown in FIGS. 3, 4, 5 (b) and 6 (a), these reinforcing walls 12a and 13a have a length in the vertical direction (thickness direction) of the reinforcing wall of the needle body 11. The length is longer than the vertical length of 11a and shorter than the vertical length of the guide cylinder portion 16 provided on the lower surface of the fixing portion 12.

これにより、これら補強壁１２ａ、１３ａは、針本体１１の補強壁１１ａと同様、固定部１２と装飾部１３との各肉厚を薄く形成しても、固定部１２と装飾部１３との剛性を確保して、固定部１２と装飾部１３との撓みや捩れを防ぐように構成されている。このため、固定部１２と装飾部１３とは、その各肉厚が薄く形成されて固定部１２と装飾部１３との重量が軽くなるように構成されている。 As a result, the reinforcing walls 12a and 13a have the same rigidity as the reinforcing wall 11a of the needle body 11 even if the fixing portion 12 and the decorative portion 13 are formed to have thin thicknesses. Is configured to prevent bending and twisting of the fixing portion 12 and the decorative portion 13. Therefore, the fixing portion 12 and the decorative portion 13 are formed so that their respective wall thicknesses are thin and the weight of the fixing portion 12 and the decorative portion 13 is lightened.

ところで、指針６である時針８は、図１に示すように、その針本体の長さが分針９の針本体１１の長さよりも短い長さに形成されており、これ以外は分針９と同様に形成されている。この場合、時針８が取り付けられる筒車である時針車の時針軸は、図示しないが、分針軸が回転可能に挿入する筒状に形成されている。また、この時針軸は、分針軸と同様、嵌入部の外周面が八角形以上の多角形に形成され、その外周面に抜止め部の係止部が形成された構成になっている。 By the way, as shown in FIG. 1, the hour hand 8 which is the pointer 6 is formed so that the length of the hand body is shorter than the length of the hand body 11 of the minute hand 9, and other than that, it is the same as the minute hand 9. Is formed in. In this case, the hour hand shaft of the hour hand wheel, which is a cylinder wheel to which the hour hand 8 is attached, is not shown, but is formed in a tubular shape in which the minute hand shaft is rotatably inserted. Further, at this time, the hour hand shaft has a configuration in which the outer peripheral surface of the fitting portion is formed into a polygonal shape of an octagon or more, and a locking portion of the retaining portion is formed on the outer peripheral surface thereof, similarly to the minute hand shaft.

次に、このような腕時計における指針６の作用について説明する。
まず、指針６である分針９を製作する場合には、上金型と下金型とで構成される成型用の金型内にＡＢＳ樹脂、ポリカーボネート樹脂（ＰＣ）などの硬質の合成樹脂を射出して固化させた上、金型を上金型と下金型とに離型させて、固化した合成樹脂を取り出すだけで、先細のほぼ帯板状の針本体１１とほぼ円板状の固定部１２とほぼ扇形状の装飾部１３とが一体に形成された分針９が得られる。 Next, the operation of the pointer 6 on such a wristwatch will be described.
First, when manufacturing the minute hand 9 which is the pointer 6, a hard synthetic resin such as ABS resin or polycarbonate resin (PC) is injected into a molding die composed of an upper mold and a lower mold. Then, the mold is separated into the upper mold and the lower mold, and the solidified synthetic resin is taken out. A minute hand 9 in which the portion 12 and the substantially fan-shaped decorative portion 13 are integrally formed is obtained.

すなわち、針本体１１は固定部１２の外周の端部に一体に形成される。固定部１２は、その中心部に嵌合孔１４ａが八角形以上の多角形状に形成され、この嵌合孔１４ａの内周面に規制部１５ａが断面三角状に突出して形成され、かつこの嵌合孔１４ａの下側にガイド筒部１６が形成されると共に、嵌合孔１４ａから外周側に離れた箇所に逃し部１７が形成される。 That is, the needle body 11 is integrally formed at the outer peripheral end of the fixing portion 12. In the fixing portion 12, the fitting hole 14a is formed in a polygonal shape of an octagon or more in the central portion thereof, and the regulating portion 15a is formed on the inner peripheral surface of the fitting hole 14a so as to project in a triangular cross section, and the fitting portion 12 is fitted. A guide cylinder portion 16 is formed on the lower side of the joint hole 14a, and a relief portion 17 is formed at a position away from the fitting hole 14a on the outer peripheral side.

装飾部１３は固定部１２の外周の端部に針本体１１と反対側に突出して形成される。この装飾部１３には複数の装飾凹部１８が形成される。また、針本体１１の外周縁には補強壁１１ａが固定部１２に対応する箇所を除いてそのほぼ全周に亘って枠状に形成され、固定部１２の外周縁と装飾部１３の外周縁とには、それぞれ補強壁１２ａ、１３ａが針本体１１の補強壁１１ａに連続した状態で、これらの全周に沿って枠状に形成される。 The decorative portion 13 is formed at the outer peripheral end of the fixed portion 12 so as to project on the opposite side of the needle body 11. A plurality of decorative recesses 18 are formed in the decorative portion 13. Further, on the outer peripheral edge of the needle body 11, a reinforcing wall 11a is formed in a frame shape over almost the entire circumference except for a portion corresponding to the fixing portion 12, and the outer peripheral edge of the fixing portion 12 and the outer peripheral edge of the decorative portion 13 are formed. The reinforcing walls 12a and 13a are formed in a frame shape along the entire circumference of the reinforcing walls 11a of the needle body 11 in a state of being continuous with the reinforcing walls 11a, respectively.

このときには、針本体１１、固定部１２、および装飾部１３は、これら補強壁１１ａ、１２ａ、１３ａによって針本体１１、固定部１２、および装飾部１３の剛性が確保されて、針本体１１、固定部１２、および装飾部１３の撓みや捩れが阻止されることにより、針本体１１、固定部１２、および装飾部１３の各肉厚が薄く形成されている。 At this time, the needle body 11, the fixing portion 12, and the decorative portion 13 are fixed to the needle body 11, by ensuring the rigidity of the needle body 11, the fixing portion 12, and the decorative portion 13 by the reinforcing walls 11a, 12a, and 13a. By preventing the portion 12 and the decorative portion 13 from bending or twisting, the thickness of each of the needle body 11, the fixing portion 12, and the decorative portion 13 is formed to be thin.

この場合、ガイド筒部１６は、その内径が固定部１２の下面から下側に向かうに従って次第に大きくなるように形成されていることにより、金型を上金型と下金型とに離型させて金型内から取り出す際に、下金型内からその下部側から上部側に向けて容易にかつ良好に取り出することができる。 In this case, the guide cylinder portion 16 is formed so that the inner diameter thereof gradually increases from the lower surface of the fixed portion 12 toward the lower side, so that the mold is released into the upper mold and the lower mold. When it is taken out from the mold, it can be easily and satisfactorily taken out from the lower mold from the lower side to the upper side.

また、嵌合孔１４ａ内に設けられた抜止め部１５の規制部１５ａは、上金型と下金型との離型ラインであるパーテングライン上に位置させることにより、金型を上金型と下金型とに離型させて金型内から取り出す際に、上金型と下金型とが上下に離れることにより、規制部１５ａが嵌合孔１４ａの内周面に断面三角状に突出していても、金型内から容易にかつ良好に取り出すことができる。 Further, the restricting portion 15a of the retaining portion 15 provided in the fitting hole 14a is positioned on the parting line, which is a separation line between the upper mold and the lower mold, so that the mold is placed on the upper mold. When the upper mold and the lower mold are separated from each other and taken out from the mold, the upper mold and the lower mold are separated from each other in the vertical direction, so that the regulating portion 15a has a triangular cross section on the inner peripheral surface of the fitting hole 14a. Even if it protrudes, it can be easily and satisfactorily taken out from the mold.

このような指針６である分針９を指針軸１０に取り付ける際には、指針軸１０の先端部（図３では上端部）に設けられた嵌入部１０ａを分針９の下側から固定部１２のガイド筒部１６内に挿入させて固定部１２の嵌合孔１４ａに嵌入させる。 When the minute hand 9 which is such a pointer 6 is attached to the pointer shaft 10, the fitting portion 10a provided at the tip end portion (upper end portion in FIG. 3) of the pointer shaft 10 is fixed from the lower side of the minute hand 9 to the fixing portion 12. It is inserted into the guide cylinder portion 16 and fitted into the fitting hole 14a of the fixing portion 12.

このときには、ガイド筒部１６における固定部１２の下面側の内径が嵌合孔１４ａの内径と同じ大きさで、固定部１２の下面から下側に向かうに従って次第にガイド筒部１６の内径が大きくなるように形成されていることにより、指針軸１０の嵌入部１０ａを固定部１２の嵌合孔１４ａに良好に嵌入させることができる。 At this time, the inner diameter of the lower surface side of the fixing portion 12 of the guide cylinder portion 16 is the same as the inner diameter of the fitting hole 14a, and the inner diameter of the guide cylinder portion 16 gradually increases from the lower surface of the fixing portion 12 toward the lower side. As a result, the fitting portion 10a of the pointer shaft 10 can be satisfactorily fitted into the fitting hole 14a of the fixing portion 12.

すなわち、指針軸１０の嵌入部１０ａを固定部１２の嵌合孔１４ａに挿入する際には、指針軸１０の嵌入部１０ａをガイド筒部１６の内周面でガイドしながら、指針軸１０の嵌入部１０ａを固定部１２の嵌合孔１４ａに導くことにより、指針軸１０の嵌入部１０ａをガイド筒部１６によって固定部１２の嵌合孔１４ａに確実にかつ良好に嵌入させること
ができる。 That is, when the fitting portion 10a of the pointer shaft 10 is inserted into the fitting hole 14a of the fixing portion 12, the fitting portion 10a of the pointer shaft 10 is guided by the inner peripheral surface of the guide cylinder portion 16 while the guide shaft 10 is inserted. By guiding the fitting portion 10a to the fitting hole 14a of the fixing portion 12, the fitting portion 10a of the pointer shaft 10 can be reliably and satisfactorily fitted into the fitting hole 14a of the fixing portion 12 by the guide cylinder portion 16.

この場合には、嵌合孔１４ａの内周面が八角形以上の多角形に形成され、指針軸１０の嵌入部１０ａの外周面が嵌合孔１４ａと同じ大きさの八角形以上の多角形に形成されていることにより、指針軸１０に対する分針９の回転を阻止するための回転止め部１４が構成されている。 In this case, the inner peripheral surface of the fitting hole 14a is formed into an octagonal or larger polygon, and the outer peripheral surface of the fitting portion 10a of the pointer shaft 10 is an octagonal or larger polygon having the same size as the fitting hole 14a. The rotation stop portion 14 for preventing the rotation of the minute hand 9 with respect to the pointer shaft 10 is configured.

このため、指針軸１０の嵌入部１０ａが固定部１２の嵌合孔１４ａに嵌合した際には、嵌入部１０ａの八角形以上の多角形と嵌合孔１４ａの八角形以上の多角形とが噛み合うことにより、固定部１２が指針軸１０に対して非回転状態で取り付けられる。これにより、指針軸１０に対して分針９が回転することがなく、分針９が指針軸１０と共に回転して運針する。 Therefore, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, the fitting portion 10a has an octagonal or larger polygon and the fitting hole 14a has an octagonal or larger polygon. The fixed portion 12 is attached to the pointer shaft 10 in a non-rotating state by engaging the two. As a result, the minute hand 9 does not rotate with respect to the pointer shaft 10, and the minute hand 9 rotates together with the pointer shaft 10 to move the hand.

この場合、回転止め部１４は、指針軸１０の嵌入部１０ａの外周面が八角形以上の多角形で、固定部１２の嵌合孔１４ａの内周面が八角形以上の多角形であることにより、指針軸１０に対する指針６の回転方向における取付位置を調整する際に、４５度以下の角度で指針軸１０に対する指針６の取付角度を調整することができる。 In this case, the rotation stop portion 14 has an outer peripheral surface of the fitting portion 10a of the pointer shaft 10 having a polygonal shape of an octagon or more, and an inner peripheral surface of the fitting hole 14a of the fixing portion 12 having a polygonal shape of an octagon or more. Therefore, when adjusting the mounting position of the pointer 6 with respect to the pointer shaft 10 in the rotation direction, the mounting angle of the pointer 6 with respect to the pointer shaft 10 can be adjusted at an angle of 45 degrees or less.

また、このときには、抜止め部１５が、固定部１２の嵌合孔１４ａの内周面に突出して設けられた規制部１５ａと、固定部１２の嵌合孔１４ａに嵌合する指針軸１０の嵌入部１０ａの外周面に窪んで設けられた係止部１５ｂと、を備えているので、固定部１２の嵌合孔１４ａに指針軸１０の嵌入部１０ａが嵌合した際に、嵌合孔１４ａの内周面の規制部１５ａが指針軸１０の嵌入部１０ａの外周面の係止部１５ｂに係合する。 Further, at this time, the retaining portion 15 is provided on the inner peripheral surface of the fitting hole 14a of the fixing portion 12 so as to protrude from the regulating portion 15a, and the pointer shaft 10 that fits into the fitting hole 14a of the fixing portion 12. Since the locking portion 15b provided by being recessed on the outer peripheral surface of the fitting portion 10a is provided, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, the fitting hole is provided. The regulating portion 15a on the inner peripheral surface of 14a engages with the locking portion 15b on the outer peripheral surface of the fitting portion 10a of the pointer shaft 10.

すなわち、規制部１５ａは、固定部１２の嵌合孔１４ａの内周面に設けられた断面三角形状の突起部であり、係止部１５ｂは、指針軸１０の嵌入部１０ａの外周面に環状に設けられた断面Ｖ字形状の溝部である。このため、固定部１２の嵌合孔１４ａに指針軸１０の嵌入部１０ａが嵌合すると、嵌合孔１４ａの規制部１５ａが指針軸１０の嵌入部１０ａの係止部１５ｂに係合する。これにより、指針軸１０に対する固定部１２の軸方向の位置が規制されて、固定部１２が指針軸１０から抜け出すことなく固定される。 That is, the restricting portion 15a is a protrusion having a triangular cross section provided on the inner peripheral surface of the fitting hole 14a of the fixing portion 12, and the locking portion 15b is annular to the outer peripheral surface of the fitting portion 10a of the pointer shaft 10. It is a groove portion having a V-shaped cross section provided in. Therefore, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, the regulating portion 15a of the fitting hole 14a engages with the locking portion 15b of the fitting portion 10a of the pointer shaft 10. As a result, the axial position of the fixing portion 12 with respect to the pointer shaft 10 is restricted, and the fixing portion 12 is fixed without coming off the pointer shaft 10.

このように嵌合孔１４ａの規制部１５ａが指針軸１０の嵌入部１０ａの係止部１５ｂに係合する際には、固定部１２に設けられた逃し部１７である複数のスリット孔が固定部１２の径方向に収縮変形することにより、嵌合孔１４ａが弾力的に押し広げられるように変形する。このため、指針軸１０の嵌入部１０ａが嵌合孔１４ａに嵌合する際に、嵌合孔１４ａの規制部１５ａを指針軸１０の嵌入部１０ａの係止部１５ｂに係合させ易くして確実にかつ良好に係合させることができる。 When the restricting portion 15a of the fitting hole 14a engages with the locking portion 15b of the fitting portion 10a of the pointer shaft 10 in this way, a plurality of slit holes, which are relief portions 17 provided in the fixing portion 12, are fixed. By contracting and deforming the portion 12 in the radial direction, the fitting hole 14a is deformed so as to be elastically expanded. Therefore, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a, the restricting portion 15a of the fitting hole 14a can be easily engaged with the locking portion 15b of the fitting portion 10a of the pointer shaft 10. It can be engaged reliably and well.

ところで、指針６である時針８は、その針本体の長さが分針９よりも短いだけで、分針９と同じ構成であるから、分針９と同様に製作することができ、かつ分針９と同様に指針軸１０に取り付けることができる。 By the way, since the hour hand 8 which is the pointer 6 has the same structure as the minute hand 9 except that the length of the hand body is shorter than the minute hand 9, it can be manufactured in the same manner as the minute hand 9 and also in the same manner as the minute hand 9. Can be attached to the pointer shaft 10.

このように、この腕時計の指針６によれば、針本体１１と、指針軸１０に固定される固定部１２と、を合成樹脂で一体に形成したことにより、固定部１２によって針本体１１が形状の制約を受けることがないため、針本体１１と固定部１２とを自由な形状に形成することができ、これにより指針６のデザイン性を高めることができると共に、指針６の軽量化を図ることができる。 As described above, according to the pointer 6 of this wristwatch, the needle body 11 and the fixing portion 12 fixed to the pointer shaft 10 are integrally formed of synthetic resin, so that the needle body 11 is shaped by the fixing portion 12. Since the needle body 11 and the fixing portion 12 can be formed in a free shape without being restricted by the above, the design of the pointer 6 can be improved and the weight of the pointer 6 can be reduced. Can be done.

この場合、固定部１２は、指針軸１０に対して非回転状態で取り付けられる回転止め部１４と、指針軸１０に対する軸方向への抜け出しを阻止する抜止め部１５と、を備えているので、固定部１２を指針軸１０に取り付けた際に、回転止め部１４によって固定部１２を指針軸１０に対して回転することなく取り付けることができ、これにより指針軸１０の回転と共に固定部１２を確実に回転させることができると共に、抜止め部１５によって固定部１２が指針軸１０から抜け出すことがなく、固定部１２を指針軸１０に確実にかつ良好に取り付けることができる。 In this case, since the fixing portion 12 includes a rotation stop portion 14 that is attached to the pointer shaft 10 in a non-rotating state, and a retaining portion 15 that prevents the pointer shaft 10 from coming off in the axial direction. When the fixing portion 12 is attached to the pointer shaft 10, the rotation stop portion 14 allows the fixing portion 12 to be attached without rotating with respect to the pointer shaft 10, whereby the fixing portion 12 is securely attached with the rotation of the pointer shaft 10. The fixing portion 12 does not come off from the pointer shaft 10 due to the retaining portion 15, and the fixing portion 12 can be securely and satisfactorily attached to the pointer shaft 10.

すなわち、回転止め部１４は、固定部１２の中心部に設けられて内周面が非円形状である八角形以上の多角形に形成された嵌合孔１４ａと、指針軸１０に設けられ、外周面が嵌合孔１４ａと同じ非円形状である八角形以上の多角形に形成されて嵌合孔１４ａに嵌入する嵌入部１０ａと、を備えていることにより、固定部１２の嵌合孔１４ａに指針軸１０の嵌入部１０ａを嵌合させると、嵌合孔１４ａの多角形と嵌入部１０ａの多角形とを噛み合せることができる。 That is, the rotation stop portion 14 is provided in the fitting hole 14a provided in the central portion of the fixing portion 12 and formed in a polygonal shape having an octagonal shape or more whose inner peripheral surface is non-circular, and in the pointer shaft 10. The fitting hole of the fixing portion 12 is provided with a fitting portion 10a whose outer peripheral surface is formed into an octagonal or larger polygon having the same non-circular shape as the fitting hole 14a and which is fitted into the fitting hole 14a. When the fitting portion 10a of the pointer shaft 10 is fitted to the 14a, the polygon of the fitting hole 14a and the polygon of the fitting portion 10a can be meshed with each other.

このため、この回転止め部１４は、嵌合孔１４ａの多角形と嵌入部１０ａの多角形との噛み合いによって、固定部１２を指針軸１０に対して非回転状態で取り付けることができ、これにより固定部１２が指針軸１０に対して回転することがなく、指針軸１０の回転と共に固定部１２を確実に回転させることができるので、指針軸１０を中心に針本体１１を良好に運針させることができる。 Therefore, the rotation stop portion 14 can be attached to the fixing portion 12 in a non-rotating state with respect to the pointer shaft 10 by the engagement between the polygon of the fitting hole 14a and the polygon of the fitting portion 10a. Since the fixed portion 12 does not rotate with respect to the pointer shaft 10 and the fixed portion 12 can be reliably rotated with the rotation of the pointer shaft 10, the needle body 11 should be satisfactorily moved around the pointer shaft 10. Can be done.

この場合、回転止め部１４は、固定部１２の嵌合孔１４ａの内周面が八角形以上の多角形で、指針軸１０の嵌入部１０ａの外周面が固定部１２の嵌合孔１４ａと同じ八角形以上の多角形であることにより、指針軸１０に対する指針６の回転方向における取付位置を調整する際に、４５度以下の角度で指針軸１０に対する指針６の取付角度を調整することができる。 In this case, the rotation stop portion 14 has a polygonal inner peripheral surface of the fitting hole 14a of the fixing portion 12 having an octagonal shape or more, and the outer peripheral surface of the fitting portion 10a of the pointer shaft 10 is the fitting hole 14a of the fixing portion 12. Since it is the same octagon or more polygon, when adjusting the mounting position of the pointer 6 with respect to the pointer shaft 10 in the rotation direction, the mounting angle of the pointer 6 with respect to the pointer shaft 10 can be adjusted at an angle of 45 degrees or less. it can.

また、抜止め部１５は、固定部１２の嵌合孔１４ａの内周面に設けられた規制部１５ａと、指針軸１０の嵌入部１０ａの外周面に設けられて規制部１５ａが係合して、指針軸１０に対する固定部１２の軸方向の位置を規制する係止部１５ｂと、を備えていることにより、指針軸１０に対する固定部１２の軸方向の位置を規制して、固定部１２が指針軸１０から抜け出さないように、固定部１２を指針軸１０に確実に固定することができる。 Further, the retaining portion 15 is provided on the outer peripheral surface of the fitting portion 10a of the pointer shaft 10 to engage with the regulating portion 15a provided on the inner peripheral surface of the fitting hole 14a of the fixing portion 12. By providing a locking portion 15b that regulates the axial position of the fixing portion 12 with respect to the pointer shaft 10, the axial position of the fixing portion 12 with respect to the pointer shaft 10 is regulated and the fixing portion 12 is provided. Can be securely fixed to the pointer shaft 10 so that the fixing portion 12 does not come out of the pointer shaft 10.

すなわち、規制部１５ａは、固定部１２の嵌合孔１４ａの内周面に設けられた断面三角形状の突起部であり、係止部１５ｂは、指針軸１０の嵌入部１０ａの外周面に環状に設けられた断面Ｖ字形状の溝部であるため、固定部１２の嵌合孔１４ａに指針軸１０の嵌入部１０ａを嵌合させた際に、嵌合孔１４ａの規制部１５ａを指針軸１０の嵌入部１０ａの係止部１５ｂに確実にかつ良好に係合させることができる。 That is, the restricting portion 15a is a protrusion having a triangular cross section provided on the inner peripheral surface of the fitting hole 14a of the fixing portion 12, and the locking portion 15b is annular to the outer peripheral surface of the fitting portion 10a of the pointer shaft 10. Since the groove portion has a V-shaped cross section provided in the above, when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, the regulating portion 15a of the fitting hole 14a is fitted to the guide shaft 10a. Can be securely and satisfactorily engaged with the locking portion 15b of the fitting portion 10a.

このため、この抜止め部１５は、嵌合孔１４ａの規制部１５ａが指針軸１０の嵌入部１０ａの係止部１５ｂに係合することにより、指針軸１０に対する固定部１２の軸方向の位置を簡単にかつ確実に規制することができるので、固定部１２が指針軸１０から抜け出さないように、固定部１２を指針軸１０に確実に固定させることができる。 Therefore, the retaining portion 15 is positioned in the axial direction of the fixing portion 12 with respect to the pointer shaft 10 by engaging the restricting portion 15a of the fitting hole 14a with the locking portion 15b of the fitting portion 10a of the pointer shaft 10. Can be easily and surely regulated, so that the fixing portion 12 can be reliably fixed to the pointer shaft 10 so that the fixing portion 12 does not come out of the pointer shaft 10.

この場合、固定部１２は、その中心部の嵌合孔１４ａに指針軸１０の嵌入部１０ａが嵌入して規制部１５ａが係止部１５ｂに係合する際に、嵌合孔１４ａを弾力的に押し広げるように変形させるための逃し部１７を備えていることにより、嵌合孔１４ａの規制部１５ａを指針軸１０の嵌入部１０ａの係止部１５ｂに係合させ易くして確実にかつ良好に係合させることができる。 In this case, the fixing portion 12 elastically fits the fitting hole 14a when the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a at the center thereof and the regulating portion 15a engages with the locking portion 15b. By providing a relief portion 17 for deforming the fitting hole 14a so as to be expanded, the restricting portion 15a of the fitting hole 14a can be easily and reliably engaged with the locking portion 15b of the fitting portion 10a of the pointer shaft 10. Can be engaged well.

すなわち、逃し部１７は、固定部１２に設けられた複数のスリット孔であり、固定部１２の嵌合孔１４ａに指針軸１０の嵌入部１０ａが嵌入して規制部１５ａが係止部１５ｂに係合する際に、逃し部１７である複数のスリット孔を固定部１２の径方向に収縮変形させることができるので、嵌合孔１４ａを弾力的に押し広げるように変形させることができ、これにより嵌合孔１４ａの規制部１５ａを指針軸１０の嵌入部１０ａの係止部１５ｂに係合させ易くすることができる。 That is, the relief portion 17 is a plurality of slit holes provided in the fixing portion 12, and the fitting portion 10a of the pointer shaft 10 is fitted into the fitting hole 14a of the fixing portion 12, and the regulating portion 15a is fitted into the locking portion 15b. When engaging, the plurality of slit holes, which are the relief portions 17, can be contracted and deformed in the radial direction of the fixing portion 12, so that the fitting holes 14a can be deformed so as to elastically expand. As a result, the restricting portion 15a of the fitting hole 14a can be easily engaged with the locking portion 15b of the fitting portion 10a of the pointer shaft 10.

また、この腕時計の指針６では、固定部１２に針本体１１と反対側に突出する装飾部１３が一体に形成されていることにより、この装飾部１３によって装飾性を高めることができ、これによっても指針６のデザイン性を高めることができると共に、この装飾部１３によって固定部１２を中心とする針本体１１の重量バランスをとることができ、これにより指針軸１０を中心に指針６をバランス良く良好に運針させることができる。 Further, in the pointer 6 of this wristwatch, since the decorative portion 13 projecting to the opposite side of the needle body 11 is integrally formed on the fixed portion 12, the decorative portion 13 can enhance the decorativeness, thereby enhancing the decorativeness. The design of the pointer 6 can be improved, and the weight of the needle body 11 centered on the fixing portion 12 can be balanced by the decorative portion 13, whereby the pointer 6 can be balanced around the pointer shaft 10. The hands can be moved well.

すなわち、この装飾部１３は、固定部１２の外周端にほぼ扇形状に形成され、この装飾部１３に円形状および矩形状の複数の装飾凹部１８が固定部１２の外周に沿って形成されていることにより、装飾部１３の形状および複数の装飾凹部１８によって、指針６の装飾性を、より一層、高めることができ、これにより指針６のデザイン性を更に向上させることができる。 That is, the decorative portion 13 is formed in a substantially fan shape at the outer peripheral end of the fixed portion 12, and a plurality of circular and rectangular decorative recesses 18 are formed in the decorative portion 13 along the outer periphery of the fixed portion 12. As a result, the decorativeness of the pointer 6 can be further enhanced by the shape of the decorative portion 13 and the plurality of decorative recesses 18, and thereby the design of the pointer 6 can be further improved.

さらに、この腕時計の指針６では、針本体１１と固定部１２と装飾部１３との各外周縁に補強壁１１ａ、１２ａ、１３ａがこれらの全周に亘って連続した状態で枠状に設けられていることにより、これら補強壁１１ａ、１２ａ、１３ａによって針本体１１と固定部１２と装飾部１３との各剛性を確保して、指針６の強度を高めることができる。 Further, in the pointer 6 of this wristwatch, reinforcing walls 11a, 12a, 13a are provided on the outer peripheral edges of the needle body 11, the fixing portion 12, and the decorative portion 13 in a frame shape in a continuous state over the entire circumference thereof. As a result, the rigidity of the needle body 11, the fixing portion 12, and the decorative portion 13 can be ensured by the reinforcing walls 11a, 12a, and 13a, and the strength of the pointer 6 can be increased.

このため、この腕時計の指針６では、補強壁１１ａ、１２ａ、１３ａによって針本体１１と固定部１２と装飾部１３との撓みや捩れを確実にかつ良好に防ぐことができると共に、針本体１１と固定部１２と装飾部１３との各肉厚を薄く形成することができ、これにより指針６の更なる軽量化を図ることができる。これにより、針本体１１と固定部１２と装飾部１３との各肉厚を薄く形成しても、指針６を安定した状態で良好に運針させることができる。 Therefore, in the pointer 6 of this wristwatch, the reinforcing walls 11a, 12a, and 13a can reliably and satisfactorily prevent bending and twisting of the needle body 11, the fixing portion 12, and the decorative portion 13, and also the needle body 11. The wall thickness of the fixing portion 12 and the decorative portion 13 can be formed to be thin, whereby the weight of the pointer 6 can be further reduced. As a result, even if the thickness of each of the needle body 11, the fixing portion 12, and the decorative portion 13 is thinly formed, the pointer 6 can be satisfactorily moved in a stable state.

なお、上述した実施形態では、指針６として、時針８と分針９とに適用した場合について述べたが、この発明はこれに限らず、秒針にも適用することができるほか、副表示の副針などの機能針にも適用することができる。 In the above-described embodiment, the case where the guideline 6 is applied to the hour hand 8 and the minute hand 9 has been described, but the present invention is not limited to this, and can be applied to the second hand as well as the sub-hand of the sub-display. It can also be applied to functional needles such as.

また、上述した実施形態では、回転止め部１４が、指針６の固定部１２に設けられた嵌合孔１４ａと、指針軸１０に設けられた嵌入部１０ａと、を備え、嵌合孔１４ａの内周面を八角形以上の多角形に形成し、嵌入部１０ａの外周面を嵌合孔１４ａの内周面と同じ八角形以上の多角形に形成した場合について述べたが、この発明はこれに限らず、例えば嵌合孔１４ａの内周面と嵌入部１０ａの外周面とを三角形、四角形、五角形、六角形などの多角形に形成しても良く、また楕円形状やスプライン形状などの円形以外の非円形状に形成しても良い。 Further, in the above-described embodiment, the rotation stop portion 14 includes a fitting hole 14a provided in the fixing portion 12 of the pointer 6 and a fitting portion 10a provided in the pointer shaft 10, and the fitting hole 14a is provided. The case where the inner peripheral surface is formed into an octagonal or larger polygon and the outer peripheral surface of the fitting portion 10a is formed into the same octagonal or larger polygon as the inner peripheral surface of the fitting hole 14a has been described. For example, the inner peripheral surface of the fitting hole 14a and the outer peripheral surface of the fitting portion 10a may be formed into polygons such as triangles, quadrangles, pentagons, and hexagons, and circular shapes such as elliptical shapes and spline shapes. It may be formed in a non-circular shape other than.

また、上述した実施形態では、抜止め部１５が、固定部１２の嵌合孔１４ａの内周面に設けられた規制部１５ａと、指針軸１０の嵌入部１０ａの外周面に設けられた係合部１５ｂと、を備え、規制部１５ａが嵌合孔１４ａの内周面に設けられた突起部であり、係止部１５ｂが嵌入部１０ａの外周面に環状に設けられた溝部である場合について述べたが、この発明はこれに限らず、例えば規制部１５ａが嵌合孔１４ａの内周面に環状に設けられた溝部で、係止部１５ｂが嵌入部１０ａの外周面に設けられた突起部であっても良い。 Further, in the above-described embodiment, the retaining portion 15 is provided on the inner peripheral surface of the fitting hole 14a of the fixing portion 12 and on the outer peripheral surface of the fitting portion 10a of the pointer shaft 10. When the joint portion 15b is provided, the regulation portion 15a is a protrusion provided on the inner peripheral surface of the fitting hole 14a, and the locking portion 15b is a groove portion provided in an annular shape on the outer peripheral surface of the fitting portion 10a. However, the present invention is not limited to this. For example, the regulating portion 15a is provided in an annular groove on the inner peripheral surface of the fitting hole 14a, and the locking portion 15b is provided on the outer peripheral surface of the fitting portion 10a. It may be a protrusion.

さらに、上述した実施形態およびその各変形例では、指針式の腕時計に適用した場合について述べたが、この発明は必ずしも腕時計である必要はなく、例えばトラベルウオッチ、目覚まし時計、置き時計、掛け時計などの各種の指針式の時計に適用することができる。また、この発明は、必ずしも時計である必要はなく、測定器やメータなどの計器にも適用することができる。 Further, in the above-described embodiment and each modification thereof, a case where it is applied to a pointer-type wristwatch has been described, but the present invention does not necessarily have to be a wristwatch, and various types such as a travel watch, an alarm clock, a table clock, and a wall clock. It can be applied to the pointer type watch. Further, the present invention does not necessarily have to be a clock, and can be applied to instruments such as measuring instruments and meters.

以上、この発明の一実施形態について説明したが、この発明は、これに限られるものではなく、特許請求の範囲に記載された発明とその均等の範囲を含むものである。
以下に、本願の特許請求の範囲に記載された発明を付記する。 Although one embodiment of the present invention has been described above, the present invention is not limited to this, and includes the invention described in the claims and the equivalent range thereof.
Hereinafter, the inventions described in the claims of the present application will be added.

（付記）
請求項１に記載の発明は、針本体と、指針軸と、前記指針軸に固定される固定部と、を備え、前記固定部は、前記指針軸に対して非回転状態で取り付けられる回転止め部を備え、前記針本体と前記固定部とを合成樹脂で一体に形成したことを特徴とする指針装置である。 (Additional note)
The invention according to claim 1 includes a needle body, a pointer shaft, and a fixing portion fixed to the pointer shaft, and the fixing portion is attached to the pointer shaft in a non-rotating state. The pointer device is provided with a portion, and the needle body and the fixing portion are integrally formed of a synthetic resin.

請求項２に記載の発明は、請求項１に記載の指針装置において、前記固定部は、前記指針軸に対する軸方向への抜け出しを阻止する抜止め部を備えていることを特徴とする指針装置である。 The invention according to claim 2 is the pointer device according to claim 1, wherein the fixing portion includes a retaining portion for preventing the pointer shaft from coming off in the axial direction. Is.

請求項３に記載の発明は、請求項１または請求項２に記載の指針装置において、前記回転止め部は、前記固定部の中心部に設けられて内周面が非円形状に形成された嵌合孔と、前記指針軸に設けられ、外周面が前記嵌合孔と同じ非円形状に形成されて前記嵌合孔に嵌入する嵌入部と、を備えていることを特徴とする指針装置である。 The invention according to claim 3 is the pointer device according to claim 1 or 2, wherein the rotation stop portion is provided at the center of the fixed portion and the inner peripheral surface is formed in a non-circular shape. A pointer device including a fitting hole and a fitting portion provided on the pointer shaft and having an outer peripheral surface formed in the same non-circular shape as the fitting hole and fitted into the fitting hole. Is.

請求項４に記載の発明は、請求項２に記載の指針装置において、前記抜止め部は、前記固定部の嵌合孔の内周面に設けられた規制部と、前記指針軸の嵌入部の外周面に設けられて前記規制部が係合することにより、前記指針軸に対する前記固定部の軸方向の位置を規制する係止部と、を備えていることを特徴とする指針装置である。 The invention according to claim 4 is the pointer device according to claim 2, wherein the retaining portion is a regulation portion provided on an inner peripheral surface of a fitting hole of the fixing portion and a fitting portion of the pointer shaft. The pointer device is provided with a locking portion that regulates the axial position of the fixed portion with respect to the pointer shaft by engaging the restricting portion on the outer peripheral surface of the pointer. ..

請求項５に記載の発明は、請求項４に記載の指針装置において、前記固定部は、前記嵌合孔に前記指針軸の前記嵌入部が嵌入して前記規制部が前記係止部に係合する際に、前記嵌合孔を弾力的に押し広げるように変形させるための逃し部を備えていることを特徴とする指針装置である。 The invention according to claim 5 is the pointer device according to claim 4, wherein the fixing portion is fitted with the fitting portion of the pointer shaft into the fitting hole, and the regulating portion engages with the locking portion. The pointer device is provided with a relief portion for deforming the fitting hole so as to elastically expand the fitting hole at the time of fitting.

請求項６に記載の発明は、請求項１〜請求項５のいずれかに記載の指針装置において、前記固定部には、前記針本体と反対側に突出する装飾部が一体に形成されていることを特徴とする指針装置である。 The invention according to claim 6 is the pointer device according to any one of claims 1 to 5, wherein a decorative portion projecting to the opposite side of the needle body is integrally formed on the fixing portion. It is a pointer device characterized by this.

請求項７に記載の発明は、請求項６に記載の指針装置において、前記針本体と前記固定部と前記装飾部とのうち、少なくとも前記針本体の外周縁には補強壁がほぼ全周に亘って枠状に設けられていることを特徴とする指針装置である。 According to the invention of claim 7, in the pointer device according to claim 6, a reinforcing wall is provided on substantially the entire circumference of at least the outer peripheral edge of the needle body among the needle body, the fixing portion and the decorative portion. It is a pointer device characterized in that it is provided in a frame shape over the entire surface.

請求項８に記載の発明は、請求項１〜請求項７のいずれかに記載された指針装置を備えていることを特徴とする時計である。 The invention according to claim 8 is a timepiece including the pointer device according to any one of claims 1 to 7.

１ 腕時計ケース
５ 時計モジュール
６ 指針
８ 時針
９ 分針
１０ 指針軸
１０ａ 嵌入部
１１ 針本体
１１ａ 補強壁
１２ 固定部
１２ａ 補強壁
１３ 装飾部
１３ａ 補強壁
１４ 回転止め部
１４ａ 嵌合孔
１５ 抜止め部
１５ａ 規制部
１５ｂ 係止部
１６ ガイド筒部
１７ 逃し部
１８ 装飾凹部

1 Watch case 5 Watch module 6 Pointer 8 hour hand 9 minutes hand 10 Pointer shaft 10a Fitting part 11 Hand body 11a Reinforcing wall 12 Fixing part 12a Reinforcing wall 13 Decorative part 13a Reinforcing wall 14 Rotating stop part 14a Fitting hole 15 Retaining part 15a Part 15b Locking part 16 Guide cylinder part 17 Relief part 18 Decorative recess

Claims (8)

針本体と、
指針軸と、
前記指針軸に固定される固定部と、
を備え、
前記固定部は、前記固定部の中心部に設けられて内周面が非円形状に形成された嵌合孔を有し前記指針軸に対して非回転状態で取り付けられる回転止め部と、前記嵌合孔の外周から所定の距離離間した位置に形成された円弧状のスリット孔を含む逃し部と、を備え、
前記針本体と前記固定部とを合成樹脂で一体に形成したことを特徴とする指針装置。 With the needle body
Pointer axis and
A fixed portion fixed to the pointer shaft and
With
The fixing unit includes a rotation stopper for the inner circumferential surface provided in the center portion of the fixing portion is mounted in a non-rotating state with respect to the pointer shaft has a fitting hole formed in a non-circular shape, wherein A relief portion including an arcuate slit hole formed at a position separated from the outer periphery of the fitting hole by a predetermined distance is provided.
A pointer device characterized in that the needle body and the fixing portion are integrally formed of synthetic resin. 請求項１に記載の指針装置において、前記固定部は、前記指針軸に対する軸方向への抜け出しを阻止する抜止め部を備えていることを特徴とする指針装置。 The pointer device according to claim 1, wherein the fixing portion includes a retaining portion for preventing the pointer shaft from coming off in the axial direction. 請求項１または請求項２に記載の指針装置において、前記回転止め部は、前記固定部の中心部に設けられて内周面が非円形状に形成された嵌合孔を有し、前記指針軸は、外周面が前記嵌合孔と同じ非円形状に形成されて前記嵌合孔に嵌入する嵌入部を有することを特徴とする指針装置。 In the pointer device according to claim 1 or 2, the rotation stop portion has a fitting hole provided in a central portion of the fixing portion and having an inner peripheral surface formed in a non-circular shape, and the pointer. axis, guidance device according to claim Rukoto to have a fitting portion which outer peripheral surface is fitted into the fitting hole is formed in the same non-circular shape and the fitting hole. 請求項２に記載の指針装置において、前記抜止め部は、前記固定部の嵌合孔の内周面に設けられた規制部を有し、前記指針軸は、前記指針軸の嵌入部の外周面に設けられて前記規制部が係合することにより、前記指針軸に対する前記固定部の軸方向の位置を規制する係止部を有することを特徴とする指針装置。 In the pointer device according to claim 2, the retaining portion has a regulating portion provided on the inner peripheral surface of the fitting hole of the fixing portion, and the pointer shaft is the outer periphery of the fitting portion of the pointer shaft. by the restricting portion provided on a surface are engaged, guidance device according to claim Rukoto that having a locking portion for restricting the axial position of the fixing portion with respect to the pointer shaft. 請求項４に記載の指針装置において、前記固定部は、前記嵌合孔に前記指針軸の前記嵌入部が嵌入して前記規制部が前記係止部に係合する際に、前記嵌合孔を弾力的に押し広げるように変形させるための逃し部を備えていることを特徴とする指針装置。 In the pointer device according to claim 4, the fixing portion is formed in the fitting hole when the fitting portion of the pointer shaft is fitted into the fitting hole and the restricting portion engages with the locking portion. A pointer device characterized by being provided with a relief portion for deforming so as to elastically spread the. 請求項１〜請求項５のいずれかに記載の指針装置において、前記固定部には、前記針本体と反対側に突出する装飾部が一体に形成されていることを特徴とする指針装置。 The pointer device according to any one of claims 1 to 5, wherein the fixing portion is integrally formed with a decorative portion projecting to the opposite side of the needle body. 請求項６に記載の指針装置において、前記針本体と前記固定部と前記装飾部とのうち、少なくとも前記針本体の外周縁には補強壁がほぼ全周に亘って枠状に設けられていることを特徴とする指針装置。 In the pointer device according to claim 6, a reinforcing wall is provided in a frame shape over substantially the entire circumference of at least the outer peripheral edge of the needle body among the needle body, the fixing portion, and the decorative portion. A pointer device characterized by that. 請求項１〜請求項７のいずれかに記載された指針装置を備えていることを特徴とする時計。 A timepiece including the pointer device according to any one of claims 1 to 7.
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