JP2018087825A - Hand and clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand light in weight and good in productivity and a clock provided with the same.SOLUTION: A hand includes: a metallic hand attachment member 8 which has a cylindrical part 10 of which an outer peripheral surface is formed in a square shape, and in which a pair of flange-shaped projection parts 11 are provided on the outer peripheral surface of the cylindrical part 10 so as to oppose each other in an axis direction, and a hand spindle 5 is attached to the cylindrical part 10; and a hand body 7 made of a synthetic resin which has a penetration hole 9 formed in the same square shape as the outer peripheral surface of the cylindrical part 10, in which an inner peripheral surface of the penetration hole 9 contacts the outer peripheral surface of the cylindrical part 10, and which is integrally formed with the hand attachment member 8 by insert molding while an edge part 9a of the penetration hole 9 is sandwiched between the pair of flange-shaped projection parts 11. Consequently, since the hand body 7 can be formed with the synthetic resin, even if the hand attachment member 8 is formed with metal, a weight of the entire hand can be reduced. Also since the hand body 7 can be integrally formed with the hand attachment member 8 by the insert molding, the yield is improved, and the productivity is good.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a pointer used for instruments such as a timepiece and a meter, and a timepiece having the same.

  For example, in a pointer used in a timepiece, as described in Patent Document 1, a metal needle body is attached to a metal needle attachment member called a hook by caulking, and the needle attachment member is attached to the pointer. Those configured to be attached to a shaft are known.

JP 07-159548 A

  However, in such a timepiece hand, since the needle body and the needle mounting member are made of metal, the weight of the entire hand is increased, and not only the power consumption during hand movement is increased, but also the size of the entire hand is increased. In addition to the problem that the needle main body is attached to the needle attachment member by caulking, there is a problem that yield is poor and productivity is poor.

  The problem to be solved by the present invention is to provide a pointer having a low weight and good productivity and a timepiece having the same.

  The present invention has a cylindrical portion whose outer peripheral surface is formed in a non-circular shape, and a pair of hook-shaped protrusions are provided on the outer peripheral surface of the cylindrical portion so as to face each other in the axial direction of the cylindrical portion, And a needle mounting member to which the pointer shaft is inserted and attached to the cylindrical portion, and a through-hole formed in the same non-circular shape as the outer peripheral surface of the cylindrical portion, and the inner peripheral surface of the through-hole is the A synthetic resin needle body integrally formed in a state of being in contact with an outer peripheral surface of the cylindrical portion and an edge portion of the through hole being sandwiched between the pair of hook-shaped projection portions, The needle is characterized in that the upper surface of the hook-shaped protrusion and the upper surface of the needle body are formed on the same plane.

  According to this invention, since the needle body can be formed of synthetic resin, the weight of the entire needle can be reduced, and there is no need to manufacture the needle body individually and attach it to the needle mounting member by caulking. Since the needle body can be formed integrally with the needle mounting member, the yield is good and the productivity is good.

It is an expanded sectional view of the important section showing the timepiece module in a 1st embodiment which applied this invention to a wristwatch. It is the enlarged plan view which looked at the pointer | guide shown by FIG. 1 from upper direction. It is an expanded sectional view of the principal part in the AA arrow of the pointer | guide shown by FIG. FIG. 3 is an enlarged plan view showing a needle body of the pointer shown in FIG. 2. 3 shows a needle mounting member of the pointer shown in FIG. 3, (a) is an enlarged plan view thereof, (b) is an enlarged cross-sectional view taken along the line B-B of (a), and (c) is a C portion of (b). It is an expanded sectional view in -C arrow view. It is the enlarged plan view which showed the pointer | guide in 2nd Embodiment which applied this invention to the wristwatch. It is an expanded sectional view of the principal part in the DD arrow of the pointer | guide shown by FIG. FIG. 7 is an enlarged plan view showing a needle body of the pointer shown in FIG. 6.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS.
As shown in FIG. 1, this wristwatch includes a timepiece module 1. The timepiece module 1 is incorporated in a watch case (not shown) and includes a housing 2. A dial plate 3 is disposed on the upper surface of the housing 2, and a watch movement 4 is provided inside the housing 2.

  As shown in FIG. 1, the timepiece movement 4 includes a pointer shaft 5 that protrudes above the dial 3 through a through hole 3 a of the dial 3, and the pointer 6 is attached to the upper end of the pointer shaft 5. It is configured. Accordingly, the timepiece movement 4 is configured to indicate the time by rotating the pointer shaft 5 and moving the hands 6 above the dial 3.

  In this case, as shown in FIGS. 1 to 3, the pointer 6 includes a needle body 7 and a needle attachment member 8, and the needle attachment member 8 is configured to be attached to the pointer shaft 5. The needle body 7 is formed in an elongated plate shape made of synthetic resin. That is, as shown in FIG. 4, the needle body 7 is a plate having a shape in which one end portion 7a (left end portion in FIG. 4) is wide and gradually tapers toward the other end portion 7b (right end portion in FIG. 4). It is formed in a shape.

  Therefore, as shown in FIG. 4, the needle body 7 is configured such that the center of gravity G1 is located at a position greatly deviated toward the one end 7a (left end in FIG. 4) in the longitudinal direction. In this case, the needle body 7 is formed with a circular portion 7c at a portion corresponding to the center of gravity G1. The circular portion 7c of the needle body 7 is provided with a non-circular rectangular through hole 9. Thereby, the needle body 7 is configured such that the center of gravity G1 is located on the central axis of the through hole 9.

  That is, as shown in FIG. 4, the needle body 7 has a length on one end 7a side (left side in FIG. 4) on the other end 7b side (right side in FIG. 4) with the through hole 9 as a boundary. It is formed shorter than this. Further, the needle body 7 is gradually narrowed from the tip end portion (left end portion in FIG. 4) toward the through hole 9 on the one end portion 7a side, and the tip end portion (see FIG. 4) from the through hole 9 on the other end portion 7b side. Then, it is formed so as to be gradually tapered toward the right end portion). Thereby, the needle body 7 is formed such that its center of gravity G1 coincides with the central axis of the through hole 9.

  On the other hand, as shown in FIGS. 3 and 5, the needle attachment member 8 includes a cylindrical portion 10 into which the pointer shaft 5 is inserted, and a pair of upper and lower hooks provided on the outer peripheral surface of the cylindrical portion 10. And a protrusion 11. In this case, the needle mounting member 8 is formed of a metal such as brass or aluminum, but is preferably formed of brass having a high specific gravity.

  As shown in FIGS. 5A to 5C, the cylindrical portion 10 of the needle mounting member 8 is provided with a circular shaft mounting hole 12 penetrating vertically at the center thereof. In this case, the shaft mounting hole 12 is formed in a size that allows the pointer shaft 5 to be inserted and fitted, and a chamfered portion 12a is provided at the lower edge of the inner peripheral surface thereof.

  Further, as shown in FIGS. 5A to 5C, the outer peripheral surface of the cylindrical portion 10 is the same shape as the through hole 9 of the needle body 7 and has a non-circular shape having the same size. It is formed in a square shape. In this case, the cylindrical portion 10 is formed so that the center of the rectangular outer peripheral surface (that is, the point where two diagonal lines intersect) and the center of the shaft mounting hole 12 coincide. Thereby, the cylindrical part 10 is formed in the cylinder shape in which the external shape was formed in the rectangle and the inside was formed circularly.

  Further, as shown in FIGS. 5A to 5C, the pair of hook-shaped protrusions 11 are respectively connected to the upper end portion and the lower end portion of the outer peripheral surface located in the axial direction of the tubular portion 10. It is integrally formed in a state of facing up and down. That is, each of the pair of hook-shaped protrusions 11 is formed in a circular ring shape having a diameter equal to or larger than the length of the diagonal line on the rectangular outer peripheral surface of the cylindrical portion 10.

  In this case, as shown in FIGS. 5A to 5C, the needle attachment member 8 has a shape that is point-symmetric. Thereby, the needle mounting member 8 is configured such that its center of gravity G2 is located on the central axis of the needle mounting member 8. For this reason, the needle mounting member 8 and the needle body 7 are configured such that the center of gravity G2 of the needle mounting member 8 and the center of gravity G1 of the needle body 7 are located on the same axis. In this case, the central axis of the shaft mounting hole 12 in the tubular portion 10 of the needle mounting member 8 and the central axis of the through hole 9 of the needle main body 7 coincide on the same axis.

  By the way, as shown in FIG. 3, the needle body 7 is integrally formed with the needle attachment member 8 by insert molding. That is, the needle body 7 is formed by placing a metal needle mounting member 8 in an injection mold (not shown) and injecting a molding synthetic resin into the mold in this state. The needle mounting member 8 is integrally molded.

  Thereby, as shown in FIG. 3, the needle body 7 has an inner peripheral surface of the rectangular through-hole 9 that is in close contact with the outer peripheral surface of the cylindrical portion 10 of the needle mounting member 8, and an edge portion of the through-hole 9. 9 a is formed integrally with the needle mounting member 8 in a state where it is sandwiched between the pair of hook-shaped protrusions 11 of the needle mounting member 8. In this case, the needle body 7 is thicker than the length between the pair of hook-shaped protrusions 11 of the needle attachment member 8 and the entire thickness of the needle attachment member 8, that is, the upper end surfaces of the pair of hook-like protrusions 11. And is formed thinner than the length of the lower end surface.

  That is, as shown in FIG. 3, the needle body 7 has an upper surface on the upper surface of the needle mounting member 8, that is, on the upper surface of the upper hook-like protrusions 11 in the pair of hook-like protrusions 11 and on the cylindrical part 10. It is formed in a flat state on the same plane with respect to the end face. Further, the lower surface of the needle main body 7 is slightly higher than the lower surface of the needle mounting member 8, that is, the lower surface of the lower hook-shaped protrusion 11 and the lower end surface of the cylindrical portion 10 of the pair of hook-shaped protrusions 11. Is formed.

Next, a case where the pointer 6 is manufactured will be described.
In this case, the metal needle mounting member 8 is manufactured in advance by cutting or casting. As a result, the needle attachment member 8 is integrally formed with a pair of hook-shaped protrusions 11 facing up and down on the outer peripheral surface of the cylindrical part 10 whose outer shape is square and the inside is formed in a circular shape. The needle mounting member 8 formed in this way is formed in a state where the center of gravity G2 coincides with the central axis of the needle mounting member 8, that is, the central axis of the shaft mounting hole 12 of the tubular portion 10.

  When the needle body 7 is molded, the needle attachment member 8 is placed in an injection mold (not shown), and in this state, a synthetic resin for molding is injected into the mold. Thereby, the needle body 7 is molded in a state of being integrally formed with the needle mounting member 8 in the mold. Thereafter, the mold is released and the needle body 7 together with the needle mounting member 8 is taken out from the mold. Thereby, the pointer 6 is manufactured.

  As shown in FIG. 3, the needle 6 manufactured in this way has the inner peripheral surface of the quadrangular through-hole 9 of the needle body 7 in close contact with the rectangular outer peripheral surface of the cylindrical portion 10 of the needle mounting member 8. In addition, the edge 9a of the through hole 9 is sandwiched between the pair of hook-shaped protrusions 11 of the needle mounting member 8, and is formed integrally with the needle mounting member 8 in this state.

  For this reason, as shown in FIG. 3, the needle body 7 has an inner peripheral surface of the rectangular through-hole 9 that is in close contact with the rectangular outer peripheral surface of the cylindrical portion 10 of the needle mounting member 8. The tubular portion 10 is fitted to the bottom. Thereby, the needle body 7 does not rotate with respect to the cylindrical portion 10 of the needle mounting member 8 and rotates integrally with the cylindrical portion 10. In addition, the needle main body 7 can be removed from the cylindrical portion 10 or the cylindrical portion 10 because the edge 9 a of the through-hole 9 is sandwiched between the pair of hook-shaped protrusions 11 of the needle mounting member 8. There is no backlash in the axial direction.

  Further, in the pointer 6 manufactured in this way, the central axis of the cylindrical portion 10 that is the central axis of the needle mounting member 8 and the central axis of the through hole 9 of the needle body 7 coincide on the same axis. The center of gravity G2 of the needle mounting member 8 and the center of gravity G1 of the needle body 7 are located on the shaft. Thereby, even if the length of the one end portion 7a and the other end portion 7b of the needle main body 7 is different from that of the needle mounting member 8, the pointer 6 has a good balance when attached to the pointer shaft 5 and rotated. Rotate.

  Thus, according to the wristwatch 6 of this wristwatch, the outer peripheral surface has a cylindrical portion 10 formed in a square shape, and a pair of hook-shaped protrusions 11 are formed on the outer peripheral surface of the cylindrical portion 10. The metallic needle mounting member 8 is provided so as to be opposed to the axial direction of 10 and the needle shaft 5 is inserted and attached to the cylindrical portion 10, and is formed in the same rectangular shape as the outer peripheral surface of the cylindrical portion 10. Inserted with a through hole 9, the inner peripheral surface of the through hole 9 being in contact with the outer peripheral surface of the tubular portion 10, and the edge 3 a of the through hole 9 being sandwiched between the pair of hook-shaped protrusions 11. By providing the needle body 7 made of synthetic resin integrally formed by molding, the weight of the entire needle can be reduced, and a product with good productivity can be provided.

  That is, in the wristwatch 6 of this wristwatch, the needle body 7 can be formed of synthetic resin, so that even if the needle mounting member 8 is formed of metal, the weight of the entire needle can be reduced. The power consumption when moving the needle can be reduced, and the size of the entire needle can be increased. In addition, it is not necessary to manufacture the needle body 7 individually and attach it to the needle attachment member 8 by caulking, and the needle body 7 can be integrally formed on the needle attachment member 8 by insert molding, so that the yield is good and production is possible. Good sex.

  For example, when the needle body 7 is molded, the needle mounting member 8 is placed in an injection mold (not shown), and in this state, a molding synthetic resin is injected into the mold. The needle body 7 can be easily and reliably formed integrally with the needle mounting member 8. In this case, by arranging a plurality of needle attachment members 8 in one mold and injecting synthetic resin, a plurality of needle bodies 7 can be integrally formed with the plurality of needle attachment members 8 at a time. Therefore, the productivity is further improved and the pointer 6 can be mass-produced.

  In addition, according to the pointer 6, the needle mounting member 8 is attached to the needle mounting member 8 in a state where the inner peripheral surface of the square through hole 9 of the needle body 7 is in close contact with the rectangular outer peripheral surface of the cylindrical portion 10 of the needle mounting member 8. Since the needle body 7 is formed integrally with the cylindrical portion 10 of the needle attachment member 8, the needle body 7 can be rotated together with the cylindrical portion 10 without fail.

  Further, the pointer 6 is formed integrally with the needle mounting member 8 in a state where the edge 9 a of the through hole 9 of the needle body 7 is sandwiched between the pair of hook-shaped protrusions 11 of the needle mounting member 8. Therefore, the needle body 7 can be reliably and satisfactorily fixed to the needle mounting member 8 without the needle body 7 coming off from the tubular portion 10 or rattling in the axial direction of the tubular portion 10.

  Further, according to this pointer 6, the central axis of the cylindrical portion 10 of the needle mounting member 8 and the central axis of the through hole 9 of the needle body 7 coincide on the same axis, and the needle mounting member is on this same axis. Since the center of gravity G2 of the needle 8 and the center of gravity G1 of the needle body 7 are positioned, even if the length of the one end portion 7a and the other end portion 7b of the needle body 7 is different from the needle mounting member 8, 6 can be balanced, and when the pointer 6 is attached to the pointer shaft 5 and rotated, the pointer 6 can be rotated smoothly and satisfactorily in a balanced and stable state.

  Further, in the pointer 6, the thickness of the needle main body 7 is formed to be thicker than the length between the pair of hook-shaped protrusions 11 of the needle attachment member 8, so that the pair of hook-shaped protrusions 11 are formed on the needle main body 7. The length which protrudes up and down can be shortened. Thereby, while being able to provide what is preferable in terms of appearance and design, the thickness of the needle main body 7 can be formed thick with substantially the same length as the axial length of the needle mounting member 8, The entire needle can be formed large.

  For example, in the pointer 6, among the pair of hook-shaped protrusions 11 of the needle mounting member 8, the upper surface of the hook-shaped protrusion 11 positioned on the upper side and the upper surface of the needle body 7 are positioned on the same plane. Since the needle body 7 can be formed, the hook-shaped protrusion 11 does not protrude from the upper surface of the needle body 7, and the upper surface of the hook-shaped protrusion 11 and the upper surface of the needle body 7 can be made flat. As a result, a sense of unity between the needle body 7 and the needle mounting member 8 can be obtained, so that an excellent design can be provided.

(Second Embodiment)
Next, a second embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as 1st Embodiment shown by FIGS.
As shown in FIGS. 6 to 8, this wristwatch has a configuration in which the shape of the needle body 21 of the pointer 20 is different from that of the first embodiment, and the configuration other than this is substantially the same as that of the first embodiment.

  That is, as shown in FIGS. 6 and 8, the needle main body 21 is formed in a shape in which an airplane-shaped needle portion 23 is provided in the ring portion 22, and is formed in a substantially disc shape as a whole. That is, the needle body 21 is formed such that the tip end portion 23 a of the airplane-shaped needle portion 23 protrudes into the notch portion 22 a of the ring portion 22.

  Further, as shown in FIGS. 6 and 8, the needle main body 21 has both ends of the main wing of the airplane-shaped needle portion 23 and the tail wing formed integrally with the inner peripheral portion of the ring portion 22. Thereby, the needle body 21 is provided with a plurality of (four in this second embodiment) punched holes 21 a between the inner peripheral portion of the ring portion 22 and the outer peripheral portion of the airplane-shaped needle portion 23.

  Further, as shown in FIGS. 6 and 8, a rectangular through hole 24 is provided at the center of the needle body 21, that is, at the center of the needle 23 and the center of the ring portion 22. Yes. In this case, the through-hole 24 is formed in a rectangular shape that is long in the linear direction connecting 12 o'clock and 6 o'clock. Further, the needle body 21 is provided at a position where the center of gravity G1 is shifted from the center axis S1 of the through hole 24 toward the tail side (lower side in FIG. 8) of the airplane-shaped needle portion 23.

  On the other hand, as in the first embodiment, the needle mounting member 8 has a cylindrical portion 10 into which the pointer shaft 5 is inserted, and a pair of upper and lower hook-shaped protrusions 11 provided on the outer peripheral surface of the cylindrical portion 10. And have. In this case, the cylindrical portion 10 is provided with a circular shaft mounting hole 12 penetrating vertically in the center of which the pointer shaft 5 is inserted and fitted. A chamfered portion 12 a is provided at the lower edge of the inner peripheral surface of the shaft mounting hole 12.

  Further, as shown in FIGS. 6 and 7, the cylindrical portion 10 is formed in a rectangular quadrangular shape whose outer peripheral surface is the same shape as the through hole 24 of the needle body 21 and is a non-circular shape having the same size. Has been. For this reason, the rectangular outer peripheral surface of the cylindrical portion 10 is provided at a position where the center (that is, the point where two diagonal lines intersect) is shifted in the longitudinal direction of the rectangle with respect to the central axis S2 of the shaft mounting hole 12. It has been. That is, the cylindrical portion 10 is formed in a state in which the center position of the rectangular outer peripheral surface and the center position of the shaft attachment hole 12 are shifted in the longitudinal direction of the rectangle.

  Further, as shown in FIGS. 6 and 7, the pair of hook-shaped protrusions 11 are opposed to each other on the upper and lower ends of the outer peripheral surface located in the axial direction of the cylindrical portion 10. It is integrally formed. Each of the pair of hook-shaped protrusions 11 is formed in a circular ring shape centering on the central axis S <b> 2 of the shaft mounting hole 12 of the cylindrical portion 10.

  Thereby, as shown in FIGS. 6 and 7, the needle mounting member 8 is symmetrical with respect to the straight line connecting the 12:00 and 6 o'clock. On the other hand, it is non-symmetrical. For this reason, the needle mounting member 8 is provided at a position where its center of gravity G2 is shifted from the central axis S2 of the needle mounting member 8 in the longitudinal direction of the rectangle, that is, on the opposite side to the position of the center of gravity G1 of the needle body 21.

  In this case, as shown in FIG. 8, the center of gravity G1 of the needle body 21 is shifted from the central axis S1 of the through hole 24 toward the tail side (lower side in FIG. 8) of the airplane-shaped needle portion 23. In consideration of this, as shown in FIGS. 6 and 7, the needle mounting member 8 has a center of gravity G2 opposite to the center of gravity G1 position of the needle body 21 from the center axis S2 of the needle mounting member 8, that is, an airplane shape. The needle portion 23 is displaced in the direction corresponding to the front side (upper side in FIG. 8).

  Therefore, the needle mounting member 8 and the needle main body 21 are, as shown in FIGS. 6 to 8, a central axis S <b> 1 of the through hole 24 of the needle main body 21 and a central axis S <b> 2 of the shaft mounting hole 12 of the needle mounting member 8. The center of gravity G2 of the needle mounting member 8 and the center of gravity G1 of the needle main body 7 are located on opposite sides.

  Thereby, as shown in FIGS. 6 to 8, the needle attachment member 8 and the needle body 21 cancel each other out of the center of gravity G2 position of the needle attachment member 8 and the center of gravity G1 of the needle body 7. The entire center of gravity G3 of the needle body 21 is configured to be located on the same axis S3 as the center axis S2 of the shaft mounting hole 12 of the needle mounting member 8.

  Also in this case, the needle body 21 is integrally formed with the needle attachment member 8 by insert molding as shown in FIG. That is, the needle body 21 is also provided with a metal needle mounting member 8 in an injection mold (not shown) as in the first embodiment, and in this state, a synthetic resin for molding is used as the mold. The needle mounting member 8 is integrally molded by being injected into the inside.

  Thereby, as shown in FIG. 7, the needle body 21 has an inner peripheral surface of the quadrangular through hole 24 that is in close contact with the outer peripheral surface of the cylindrical portion 10 of the needle mounting member 8, and an edge portion of the through hole 24. 24 a is formed integrally with the needle mounting member 8 in a state where it is sandwiched between the pair of hook-shaped protrusions 11 of the needle mounting member 8. Also in this case, the needle body 21 is thicker than the length between the pair of hook-shaped protrusions 11 of the needle mounting member 8 and the entire thickness of the needle mounting member 8, that is, the pair of hook-shaped protrusions 11. It is formed thinner than the length of the upper end surface and the lower end surface.

  According to the wristwatch 20 of such a wrist watch, the outer peripheral surface has a cylindrical portion 10 formed in a square shape, and a pair of hook-shaped protrusions 11 are formed on the outer peripheral surface of the cylindrical portion 10. A metallic needle mounting member 8 provided opposite to the axial direction and attached by inserting the pointer shaft 5 into the cylindrical portion 10, and a through-hole formed in the same rectangular shape as the outer peripheral surface of the cylindrical portion 10 24, the inner peripheral surface of the through-hole 24 is in contact with the outer peripheral surface of the cylindrical portion 10, and the edge 24a of the through-hole 24 is sandwiched between the pair of hook-shaped protrusions 11 by insert molding. Since the needle body 21 made of synthetic resin is integrally formed, the weight of the entire needle can be reduced and a product with good productivity can be provided as in the first embodiment. .

  That is, also in the wristwatch 20 of this wristwatch, the needle body 21 can be formed of synthetic resin, so that even if the needle mounting member 8 is formed of metal, the weight of the entire needle is reduced as in the first embodiment. As a result, it is possible to reduce power consumption when moving the pointer 6 and to increase the size of the entire needle. Further, it is not necessary to individually manufacture the needle body 21 and attach it to the needle attachment member 8, and the needle body 21 can be formed integrally with the needle attachment member 8 by insert molding, so that the yield is the same as in the first embodiment. Is good and productivity is good.

  For example, when the needle body 21 is molded, the needle attachment member 8 is placed in an injection mold (not shown), and in this state, a synthetic resin for molding is injected into the mold. As in the first embodiment, the needle body 21 can be easily and reliably formed integrally with the needle mounting member 8. In this case, by arranging a plurality of needle attachment members 8 in one mold and injecting synthetic resin, a plurality of needle bodies 21 can be formed integrally with the plurality of needle attachment members 8 at a time. Therefore, the productivity is further improved and the pointer 20 can be mass-produced.

  In addition, according to the pointer 20, the needle mounting member 8 is attached to the needle mounting member 8 in a state where the inner peripheral surface of the rectangular through hole 24 of the needle main body 21 is in close contact with the rectangular outer peripheral surface of the tubular portion 10 of the needle mounting member 8. Since it is integrally formed, the needle main body 21 does not idle with respect to the cylindrical portion 10 of the needle mounting member 8 as in the first embodiment, and the needle main body 21 is securely integrated with the cylindrical portion 10. Can be rotated.

  The needle 20 is also formed integrally with the needle mounting member 8 in a state where the edge 13 a of the through hole 24 of the needle body 21 is sandwiched between the pair of hook-shaped protrusions 11 of the needle mounting member 8. Therefore, as in the first embodiment, the needle body 21 does not come out of the tubular portion 10 and does not rattle in the axial direction of the tubular portion 10, and the needle body 21 is securely attached to the needle mounting member 8. It can be fixed well.

  In this case, the needle body 21 is formed integrally with the needle attachment member 8 by insert molding, so that the shape and design of the needle body 21 can be freely selected. Further, when the shape and design of the needle body 21 are freely selected in this way, even if the center of gravity G1 of the needle body 21 deviates from the center axis S1 of the through hole 24, the position of the center of gravity G2 of the needle mounting member 8 is cylindrical. By shifting to the opposite side of the center of gravity G1 position of the needle main body 21 with respect to the central axis S2 of the shaft mounting hole 12 of the portion 10, the balance of the needle main body 21 and the entire needle mounting member 8 can be adjusted.

  For example, as shown in FIG. 8, the center of gravity of the needle body 21 is obtained in the case of a needle body 21 that is formed in a ring portion 22 with an airplane-shaped needle portion 23 and is formed substantially in a disc shape. G1 is provided at a position shifted from the center axis S1 of the through hole 24 toward the tail side of the needle portion 23 (that is, at the 6 o'clock side of the needle portion 23). For this reason, the needle mounting member 8 has its center of gravity G2 on the side opposite to the center of gravity G1 position of the needle body 21 with respect to the center axis S2 of the shaft mounting hole 12 of the cylindrical portion 10 (that is, on the 12 o'clock side of the needle portion 23). Provided at a position shifted to the side where it is located.

  As a result, when the needle body 21 is formed integrally with the needle mounting member 8, the center of gravity G1 position of the needle body 21 and the center of gravity G2 position of the needle mounting member 8 are offset, and the needle body 21 and the needle mounting member 8 Can be positioned on the same axis S3 as the central axis S2 of the shaft mounting hole 12 of the needle mounting member 8, thereby adjusting the balance of the needle body 21 and the entire needle mounting member 8. .

  For this reason, even if the center of gravity G2 position of the needle mounting member 8 and the center of gravity G1 position of the needle body 21 are shifted, the center of gravity G3 of the entire pointer 20 is the same axis S3 as the center axis S2 of the shaft mounting hole 12 of the needle mounting member 8. Since the pointer 20 can be positioned on the upper side, the balance of the entire pointer 20 can be achieved. When the pointer 20 is attached to the pointer shaft 5 and rotated, the pointer 20 is balanced and stable as in the first embodiment. In this state, it can be rotated smoothly and satisfactorily.

  Further, in this pointer 20 as well, since the thickness of the needle main body 21 is formed to be thicker than the length between the pair of hook-shaped protrusions 11 of the needle mounting member 8, as in the first embodiment, a pair of hook-shaped. The length by which the protrusion 11 protrudes up and down the needle body 21 can be shortened. Thereby, while being able to provide what is preferable in terms of appearance and design, the thickness of the needle main body 7 can be formed thick with substantially the same length as the axial length of the needle mounting member 8, The entire needle can be formed large.

  For example, also in this pointer 20, among the pair of hook-shaped protrusions 11 of the needle mounting member 8, the upper surface of the upper hook-shaped protrusion 11 and the upper surface of the needle body 21 are positioned on the same plane. Since the needle body 21 can be formed, the hook-shaped protrusion 11 does not protrude from the upper surface of the needle body 7, and the upper surface of the hook-shaped protrusion 11 and the upper surface of the needle body 21 can be made flat. As a result, a sense of unity between the needle body 21 and the needle mounting member 8 can be obtained, so that an excellent design can be provided.

  In each of the first and second embodiments described above, the through holes 9 and 24 of the needle bodies 7 and 21 are formed in a square shape, and the outer peripheral surface of the cylindrical portion 10 of the needle attachment member 8 is the needle body 7, Although the case where the through holes 9 and 24 of the needle 21 are formed in the same rectangular shape has been described, the present invention is not limited to this. For example, the through holes 9 and 24 of the needle bodies 7 and 21 are polygonal shapes such as pentagons and hexagons, or elliptical shapes. And the outer peripheral surface of the cylindrical portion 10 of the needle mounting member 8 is a polygonal shape such as a pentagon, a hexagonal shape, or an oval shape that is the same as the through holes 9 and 24 of the needle bodies 7 and 21. The structure formed in the circular shape may be sufficient.

  Further, in each of the first and second embodiments described above, the case where the outer shape of the pair of hook-shaped protrusions 11 in the needle attachment member 8 is formed in a circular shape has been described, but it is not necessarily required to be formed in a circular shape. Alternatively, it may be formed into a free shape such as a polygonal shape such as a pentagonal shape or a hexagonal shape, or an elliptical shape.

  Furthermore, in each of the first and second embodiments described above, the case where the present invention is applied to a wristwatch has been described. can do. Further, the present invention is not necessarily limited to a watch, and can be widely applied to various instruments such as a meter.

As mentioned above, although several embodiment of this invention was described, this invention is not restricted to these, The invention described in the claim and its equal range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
The invention according to claim 1 has a cylindrical portion whose outer peripheral surface is formed in a non-circular shape, and a pair of hook-shaped projections faces the outer peripheral surface of the cylindrical portion in the axial direction of the cylindrical portion. A needle attachment member made of metal that is provided by inserting a pointer shaft into the cylindrical portion and attached thereto, and a through hole formed in the same non-circular shape as the outer peripheral surface of the cylindrical portion, The synthetic resin is integrally formed by insert molding with the inner peripheral surface of the through hole being in contact with the outer peripheral surface of the cylindrical portion and the edge of the through hole being sandwiched between the pair of hook-shaped projections A needle main body.

  The invention described in claim 2 is characterized in that, in the pointer described in claim 1, each center of gravity of the needle mounting member and the needle body is located on a central axis of the cylindrical portion. It is a guideline.

  According to a third aspect of the present invention, in the pointer according to the first aspect, the needle main body is provided at a position where the center of gravity is shifted with respect to the central axis of the through hole, and the needle mounting member is The center of gravity is provided at a position shifted from the center of gravity of the needle body with respect to the center axis of the shaft mounting hole of the cylindrical portion, and the center of gravity of the needle body and the center of gravity of the needle mounting member cancel each other. Then, the center of gravity of the needle body and the needle mounting member is located on the central axis of the shaft mounting hole of the cylindrical portion.

  According to a fourth aspect of the present invention, in the pointer according to the third aspect, the outer peripheral surface of the cylindrical portion and the through hole of the needle body are formed by the position of the center of gravity of the needle body and the position of the needle mounting member. The pointer is formed in a shape that cancels the position of the center of gravity and positions the entire center of gravity of the needle body and the needle mounting member on the center axis of the shaft mounting hole of the cylindrical portion. It is.

  According to a fifth aspect of the present invention, in the pointer according to any one of the first to fourth aspects, the thickness of the needle body is greater than the length between the pair of hook-shaped protrusions of the needle mounting member. It is a guideline characterized by being formed thick.

  The invention described in claim 6 is a timepiece including the pointer described in any one of claims 1 to 5.

DESCRIPTION OF SYMBOLS 1 Clock module 3 Dial 4 Clock movement 5 Pointer shaft 6, 20 Pointer 7, 21 Needle main body 8 Needle mounting member 9, 24 Through hole 10 Cylindrical portion 11 A pair of hook-shaped projections 12 Shaft mounting hole G1 Center of gravity of the needle main body G2 Center of gravity of needle mounting member

The invention has a tubular portion, a needle mounting member the cylindrical portion flange-shaped projecting portion on the outer peripheral surface upper set vignetting, and the pointer shaft to the tubular portion is attached by inserting the tube has an outer peripheral surface and the same shape in the through-hole formed in the Jo portion, the inner peripheral surface made of a synthetic resin in contact with the outer peripheral surface of the flange-shaped projecting portion and the outer peripheral surface of the cylindrical portion of the through hole A needle body, and a height from the bottom surface of the cylindrical portion to the outer peripheral end portion of the upper surface of the hook-shaped protrusion, and from the bottom surface of the cylindrical portion to the inner peripheral end portion of the upper surface of the needle body. This is a guideline characterized by matching the height .

Claims (6)

The outer peripheral surface has a cylindrical portion formed in a non-circular shape, and a pair of hook-shaped protrusions are provided on the outer peripheral surface of the cylindrical portion so as to face each other in the axial direction of the cylindrical portion. A needle mounting member to which the needle shaft is inserted and attached to the part;
It has a through-hole formed in the same non-circular shape as the outer peripheral surface of the cylindrical portion, the inner peripheral surface of the through-hole is in contact with the outer peripheral surface of the cylindrical portion, and the edge of the through-hole is the pair A needle body made of synthetic resin integrally formed in a state sandwiched between
With
The pointer characterized in that the upper surface of the pair of hook-shaped protrusions and the upper surface of the needle body are formed on the same plane.   2. The pointer according to claim 1, wherein the centers of gravity of the needle mounting member and the needle main body are located on a central axis of the cylindrical portion.   2. The pointer according to claim 1, wherein the needle main body is provided at a position where a center of gravity of the needle body is shifted from a center axis of the through hole, and the needle mounting member has a center of gravity attached to the shaft of the cylindrical portion. The needle body is provided at a position shifted from the center of gravity of the needle body with respect to the center axis of the hole, and the position of the center of gravity of the needle body and the position of the center of gravity of the needle mounting member are offset, and the needle body and the needle The pointer characterized by that the center of gravity of the whole of the mounting member is located on the central axis of the shaft mounting hole of the cylindrical portion.   The pointer according to claim 3, wherein the outer peripheral surface of the tubular portion and the through hole of the needle body cancel the center of gravity position of the needle body and the center of gravity position of the needle mounting member, A pointer having a shape in which a center of gravity of the needle body and the needle mounting member is positioned on a central axis of a shaft mounting hole of the cylindrical portion.   The pointer according to any one of claims 1 to 4, wherein the needle body is formed so that the thickness thereof is thicker than the length between the pair of hook-shaped protrusions of the needle mounting member. The guideline.   A timepiece comprising the pointer according to any one of claims 1 to 5.

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