CH705988A2 - A timepiece with a chronograph mechanism. - Google Patents

Abstract

The invention relates to a timepiece (2) with a chronograph mechanism (1) comprising a barrel drum wheel kinematically connected to a reduction gear train whose output is regulated by an escapement. At least one gear of the reduction gear train is arranged as a chronograph gear and is kinematically connected to a chronograph axis by means of a vertical clutch mechanism.

Description

BACKGROUND OF THE INVENTION

1. DOMAIN OF THE INVENTION

The present invention relates to a timepiece with a chronograph mechanism.

2. THE PRIOR ART

In a timepiece with a chronograph mechanism, a general wheel train for a manual operation and a wheel train for a chronograph are provided, and typically, the wheel train for a chronograph is added to the terminal of the chronograph. general wheel train for manual operation or the end that is spaced from the wheel set (hereinafter, the terminal and the end are also referred to as a "last stage of the general undercarriage for manual operation") (e.g., JP-A-5-215868).

In this kind of timepiece with a chronograph mechanism, there is an advantage in that the conventional general wheel train for manual operation can be used in maximum proportions. However, it is difficult to avoid a complication of a supporting substrate such as a main plate or a pad or an increase in the pad portions such as a hole stone.

In addition, a timepiece with a chronograph mechanism to reduce the number of parts is known (for example, JP-A-9-178 868).

In the timepiece with a chronograph mechanism of JP-A-9-178 868, the method that drives or connects the chronograph wheel train is generated, and the chronograph wheel train can be arranged on the same side as the general wheel train for manual operation. However, the timepiece with a chronograph mechanism of JP-A-9-178 868 also has the structure in which the wheel train for a chronograph is added to the last stage of the general undercarriage for manual operation, and therefore, the disadvantages described above similar to the case of JP-A-5-215868 are present.

In addition, by making a connection and disconnection between a wheel of the general wheel train for a manual operation and a wheel of the chronograph wheel train with a clutch called vertical clutch approaching and is separated in a direction of extension (timepiece thickness direction) of a stem of a timepiece is known (for example, JP-A-5-215,868 or JP-A-2004-294279).

In addition, in the timepiece with a chronograph mechanism, generally, since a wheel that displays the chronograph is provided on the last stage of the wheel train, to remove a fluctuation of a needle, with a dial washer or pressing with a pressure spring is required, the dial washer or the pressure spring increases a load with respect to the rotation of the wheel train due to friction. It is not particularly preferable in the wheel train on one side increasing speed related to a "second" or the like.

SUMMARY OF THE INVENTION

The present invention is provided in consideration of the problems described above, and an object thereof is to provide a timepiece with a chronograph mechanism in which an independent wheel train for a chronograph is not required. .

According to one aspect of the present invention, there is provided a timepiece with a chronograph mechanism comprising: a barrel drum wheel; and a speed-increasing wheel train which is rotated according to the rotation of the barrel drum wheel and wherein speed regulation of a wheel on a terminal side is effected by a regulating exhaust mechanism, wherein at less a gear in the speed-increasing wheel set is configured of a chronograph gear which is separately connected to a chronograph rod by a clutch mechanism.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, since "at least one gear in the wheel train increasing speed, which is rotated according to the rotation of the drum wheel of barrel and wherein the speed regulation of a wheel on a terminal side is effected by a regulating exhaust mechanism, is configured a chronograph gear which is separately connected to a chronograph rod by a mechanism of "clutch", a chronograph wheel can be incorporated in the middle of the wheel train increasing the speed not the terminal or a final stage of the wheel train increasing the speed. Therefore, the rotation of the chronograph wheel can be stably performed. In the timepiece with a chronograph mechanism according to the aspect of the present invention, since the gear parts which are required for the transmission of rotation in the wheel gear increasing the speed in the chronograph wheel can be separated of the chronograph rod and the other parts in the chronograph wheel by the clutch mechanism, the increase of a wheel load increasing the speed due to an interposition of the chronograph gears can be suppressed in maximum proportions.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, the clutch mechanism is arranged as a vertical clutch in which the chronograph rod is connected to the chronograph gear. in a substantially vertical direction.

In this case, if a vertical clutch mechanism is set to a separate state, the chronograph rod is separated from the chronograph gear and operates as a general timepiece, and if the clutch mechanism vertical is set to a connected state, the chronograph rod is connected to the chronograph gear, and a chronograph operation can be performed.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, the chronograph rod is arranged to be integrated with a clutch ring, a clutch spring, and a plate. clutch spring support, and the chronograph gear is arranged to be integrated with a clutch plate.

In this case, when the clutch mechanism is set to the separate state, the load or disadvantage can be suppressed in maximum proportions due to the fact that the chronograph gear is interposed in the middle part.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, the chronograph stem includes a second chronograph stem, the clutch mechanism includes a second clutch mechanism, and the at least one gear is separately connected to the second chronograph stem by the second clutch mechanism.

In this case, since the wheel of the wheel gear increasing the speed that substantially connects the barrel drum wheel and the regulator exhaust mechanism can operate as the second chronograph gear, the wheel train can be effectively used. More specifically, the terminal gear that is engaged with the regulator exhaust mechanism can operate substantially like the second chronograph gear.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, the chronograph stem includes a minute chronograph rod, the clutch mechanism includes a minute clutch mechanism. , and the at least one gear includes a minute chronograph gear that is separately connected to the minute chronograph stem by the minute clutch mechanism.

In this case, since the wheel of the wheel gear increasing the speed which substantially connects the barrel drum wheel and the regulator exhaust mechanism can operate as the minute chronograph gear, the wheel train can to be effectively used.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, the timepiece further includes an hour wheel and a minute wheel which are connected to a wheel train. decreasing the speed that is rotated according to the rotation of the barrel drum wheel.

In this case, the hour wheel and the minute wheel can be driven in the state where the load is removed in maximum proportions according to the rotation of the barrel drum wheel in which the speed control is performed. by the regulator exhaust mechanism and the interposition of the wheel train decreasing the speed.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, a gear in the gear train decreasing the speed is arranged as an hour chronograph gear which is connected separately to a gear. Hours chronograph stem by a clutch mechanism hours.

In this case, since the gear wheel decreasing speed can operate as the hours chronograph gear, the wheel train can be effectively used.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, an hour gear and a minute gear are engaged with the hour chronograph gear by an intermediate gear.

In this case, the hour wheel and the minute wheel can actually be turned. Here, typically, the intermediate gear is arranged as a minute wheel.

In the timepiece with a chronograph mechanism according to the aspect of the present invention, typically, a second wheel in the form of a small seconds hand is provided.

In this case, the second display can be performed at the time of the manual operation.

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] <tb> Fig. 1 <sep> is an explanatory plan view when main wheel sets of a chronograph timepiece of a preferred example of the present invention which includes a chronograph mechanism of a preferred example of the present invention are seen from a back cover side. <tb> Fig. 2 <sep> is an explanatory plan view when an approximate contour of the timepiece of FIG. 1is seen from one side of the dial. <tb> Fig. 3 <sep> is an explanatory cross-sectional view when the chronograph mechanism is a reset state in the timepiece of FIG. 1. <tb> Fig. 4 <sep> is an enlarged explanatory cross-cutting view representing a rotation transmission from a chronograph gear mechanism of the hours to a wheel of hours and a minute wheel when the chronograph mechanism is a start state in the workpiece timepiece of Figure 1. <tb> Figs. 5a and 5b <sep> represent an operation of a clutch mechanism in the hour chronograph gear mechanism in the timepiece of FIG. 1, fig. 5a is an enlarged explanatory cross-sectional view showing a state of the clutch mechanism when the hours chronograph gear mechanism is the reset state shown in FIG. 3, and FIG. 5b is an enlarged explanatory cross-sectional view showing a state of the clutch mechanism when the hours chronograph gear mechanism is the start state shown in FIG. 6. <tb> Fig. 6 <sep> is an explanatory cross-secant view similar to fig. 3 when the chronograph mechanism is the start state in the timepiece of FIG. 1. <tb> Fig. 7 <sep> is an explanatory cross-secant view similar to fig. 3 when the chronograph mechanism is the stop state in the timepiece of FIG. 1. <tb> Figs. 8a to 8c <sep> represent a chronograph timepiece of a modified example of the present invention which includes a chronograph mechanism of a modified example of the present invention, FIG. 8a is an explanatory view showing a contour similar to FIG. 2 with respect to a timepiece of a first modified example, FIG. 8b is an explanatory view showing an outline similar to FIG. 2 with respect to a timepiece of a second modified example, and FIG. 8c is an explanatory view showing an outline similar to FIG. 2 compared to a timepiece of a third modified example. <tb> Fig. 9 <sep> is an explanatory cross-sectional view similar to fig. 6 with respect to the chronograph timepiece which includes the chronograph mechanism of FIG. 8a.

DETAILED DESCRIPTION OF THE INVENTION

Next, a preferred embodiment of the present invention will be described based on a preferred example shown in the accompanying drawings.

Mode of realization

For example, a timepiece 2 which includes a chronograph mechanism 1 of a preferred example of the present invention, that is to say, a timepiece 2 with a chronograph mechanism has a blank as shown in FIG. 2.

That is to say, as shown in FIG. 2, the timepiece 2 with a chronograph mechanism includes an hour hand 11 and a minute hand 12 which are turned in a clockwise direction C1 about a center line of center C, and a 14-hour chronograph hand (for example, the needle is a needle for a total of 12 hours, however, the hours may be different) which is around an axis line of center A, a 15 minute chronograph hand (for example, the needle is a needle for a total of 30 minutes, however, the minutes may be different) which is rotated about an axis of center B, and a second needle Chronograph 16 (for example, the needle is a needle for a total of 60 seconds, however, the seconds may be different) which is rotated around the center line C, which are chronograph hands. On the 9:00 side of a dial 7, a pendulum with a spring 31, which constitutes a regulator exhaust mechanism (an oscillator mechanism, a resonator mechanism, or a pendulum) 30 and is turned to return around an axis line of center D, is positioned to be seen from a transparent window 7a. The timepiece 2 includes a crown 8, a start and stop switch (operation) 9a, or a reset switch (return to zero order) 9b.

The timepiece 2 with a chronograph mechanism includes a structure as shown approximately in FIGS. 1, 3, and 4 as a wheel train.

As shown in FIG. 1which is an explanatory plan view when the timepiece 2 is viewed from the back cover side, the timepiece 2 includes a barrel drum 20 (barrel) in the position of approximately 4:30 and the pendulum with a spring 31 of the regulator exhaust mechanism 30 in the 9:00 position. As shown in FIG. 3, the barrel drum 20 which is rotated about a central axis line E includes, integrally with a barrel drum shaft 23, a square hole wheel (winding ratchet) 22 including a square hole screw 21 and a square hole gear 22a, and includes, integrally with a barrel drum wheel 25, a barrel drum gear 24 and a barrel drum sprocket 26. The barrel drum wheel 25 is connected to the barrel drum gear 24 and a barrel drum gear. Regulator exhaust 30 from the barrel drum gear 24 by a wheel train increasing speed (multiplying wheel train or multiplying train) 4. As shown in FIGS. 3 and 4, the barrel drum gear 26 is connected to a hour wheel 71 by a speed-reducing wheel train (reduction gear train or reduction gear train) 5. In this example, the barrel drum wheel 25 is turned in a counterclockwise direction when viewed from the back cover side. Suitably, when the number of an intermediate wheel is different from one, the barrel drum wheel 25 can be rotated in a clockwise direction.

The speed-reducing wheel train 5 includes an intermediate wheel 73 which is connected to the barrel drum wheel 25, a chronograph hour gear main body portion 81 of a chronograph gear mechanism. hours (wheel counting the hours) 80, and a minute wheel 74.

The intermediate wheel 73 connects the barrel drum gear 26 and the chronograph gear main body portion hours 81. As understood by the explanatory cross-secant views of Figs. 3 and 4, the intermediate wheel 73 includes an intermediate wheel shaft portion 73a, and an intermediate wheel gear portion 73b and an intermediate wheel gear portion 73c which are integrated with the shaft portion 73a, are engaged. with the barrel drum sprocket 26 by an intermediate wheel gear part 73c, and is engaged with the hours 80 chronograph gear main body part of the 80 hours chronograph gear mechanism by the part of intermediate wheel sprocket 73b. For example, the intermediate wheel 73a may be a single gear that connects the barrel sprocket 26 and the hourly chronograph gear main body portion 81 instead of having the gear and the sprocket.

The minute wheel 74 includes a shaft portion 74a, a first gear portion 74b, a second gear portion 74c, and a gear portion 74d engages with the gear of the body portion. 81 hours chronograph gear main gear with the gear end portion 74b, and engages with a gear portion 71a of the hour wheel 71 with the second gear portion 74c. In addition, the gear portion 74d of the minute wheel 74 engages with a pinion portion of a minute wheel 72 or a small gear portion of diameter 72a. The hour wheel 71 and the minute wheel 72 can rotate about the center axis line C, and includes a large diameter tubular portion 71b to which the hour hand 11 is attached and a small diameter tubular portion. 72b to which the minute hand 12 is attached respectively. For example, the hour wheel 71 and the minute wheel 72 are pivoted by a center tube 107.

As understood from the enlarged explanatory cross-secant view of FIG. 4 in addition to the explanatory cross-cutting view of fig. 3, 80 hours chronograph gear mechanism includes hours 81-hour chronograph gear main body part and 83-hour chronograph gear control mechanism part. The hollow-core main body part or a hollow shaft portion 81a, and an hours chronograph pinion portion 81b and an hours chronograph gear portion 81c which are integrated with the shaft portion 81a, and is engaged with the idle gear 73b by 81b hours chronograph sprocket part. The hour chronograph gear portion 81c also operates as a clutch receiving plate portion. The hour chronograph gear portion 81c is slidably engaged to rotate relatively about the center axis line A with respect to the shaft portion 81a if a wide torque is operated.

The hours 83 chronograph gear control mechanism portion includes an 84 hours chronograph wheel rod, an 85 hours chronograph clutch ring, an 86 hours chronograph clutch spring, an hour chronograph clutch spring support plate (spacer or plate) 87, and a chronograph heart cam 88. The hour 84 chronograph wheel rod includes a small diameter rod portion 84a, a portion large diameter snare ring 84b, an intermediate diameter shank portion 84c, a small diameter shank portion 84d, and a small diameter shaft portion 84e for insertion of a needle, and is inserted to slidably rotate toward the hollow shaft portion 81a of the hour chronograph gear main body portion 81 through the small diameter rod portion 84a. The 85 hours chronograph clutch ring is engaged with the large diameter snare portion 84b and the intermediate diameter rod portion 84c of the 84 hour chronograph wheel rod to slideably replace in the direction of rotation. relatively axis line relative to the wheel rod 84. One end of the hour chronograph clutch spring 86 comes into pressure contact with a portion of the clutch ring spring bushing 85a, and the other the end of the hour chronograph clutch spring 86 is locked to the chronograph clutch spring support plate 87. The support plate 87 is attached to the wheel rod 84. In addition, for example, in the wheel rod 84, a retainer 108a is formed in a dial side direction T1 in the thickness directions T1 and T2 of the timepiece 2 in the tip side of the small diameter rod portion. be 84a. In addition, for example, in the wheel rod 84, a retainer 108b is formed in the rear cover direction 12 in the end side of the small diameter rod portion 84a. Here, a chronograph gear clutch mechanism 89 of the 80 hours chronograph gear mechanism has the shape of a vertical clutch, and includes the 85 hours chronograph clutch ring, the spring 86 hours chronograph clutch, 87 hours chronograph clutch spring retainer, and hours 81c chronograph clutch receiving plate portion.

The clutch ring 85 includes an annular concave portion 85c on the outer circumferential surface, and as shown in FIG. 5a, if an hours operation lever engagement portion 6a is moved in a direction A3 in the inner side of the diameter direction towards the annular concave portion 85c and is inserted into the annular concave portion 85c, clutch ring 85 moves in the direction T1 on the dial side in the axis line direction against the spring force of the clutch spring 86, the engagement between the clutch ring 85 of the 83 hours chronograph gear control mechanism part and the hours 81c chronograph clutch receiving plate part of the hours 81 main chronograph gear body part is released, and the body part 81 hours chronograph gear main gear can be rotated freely with respect to the 83 hour chronograph gear control mechanism part. At this time, according to the commitment between the party With the operation of the hours operation lever 6a and the annular concave portion 85c of the clutch ring 85, the movement of the shaft portion 84e and the hour chronograph hand 14 is prohibited.

On the other hand, as shown in FIG. 5b, if the manual operation lever engaging part 6a moves in a direction A4 and the engagement between the operating lever engagement portion 6a and the annular concave portion 85c of the ring clutch 85 is withdrawn, the clutch ring 85 moves in the direction T2 of the rear cover side in the axis line direction under the operation of the spring force of the clutch spring 86, and clutch ring 85 of hours 83 chronograph gear control mechanism part and hour clocks 81c chronograph clutch receiving plate portion of hours 81 chronograph gear main body part are engaged with each other. Therefore, the hour chronograph hand 14 is rotated about the center axis line A according to the rotation of the hour chronograph gear main body portion 81, and a chronograph measurement can be made.

As shown in FIGS. 1 and 3, the speed increasing wheel train 4 has the shape approximately similar to a wheel train which is called the front wheel set which is positioned on the rear cover side in a conventional general wheel set for manual operation, and includes a first speed increasing intermediate wheel 41 which is connected to the barrel drum wheel 25, a minute chronograph gear main body portion 51 of a minute chronograph gear mechanism (wheel counting the 50), a second speed increasing intermediate wheel 42, and a second chronograph gear main body portion 61 of a second chronograph gear mechanism (wheel counting seconds) 60. For example, the barrel drum wheel 25 is rotated once for 7 hours, the first speed increasing intermediate wheel 41 is turned once for 120 minutes, and the second speed increasing intermediate wheel 42 is turned once for 4 minutes. . For example, the rocker with a spring 31 may be 6 vibrations or 8 vibrations. Of course, the vibration of the balance with a spring 31 or the speed of rotation of the wheel that configures the wheel set 4 may be different from that described above.

As understood from the explanatory cross-secant view of FIG. 3, the first speed increasing intermediate wheel 41 includes a first speed increasing intermediate wheel shaft 41a, and a first speed increasing intermediate gear 41b and a first speed increasing intermediate gear 41c which are integrated with the shaft 41a, and is engaged with the barrel drum gear 24 by the first intermediate speed increasing gear 41b.

As understood by the explanatory cross-secant view of FIG. 3, the minute chronograph gear mechanism 50 is arranged to be approximately similar to the 80 hours chronograph gear mechanism. That is, the 50 minute chronograph gear mechanism includes the 51 minute chronograph gear main body and a part of 53 minutes chronograph gear control mechanism. The minute chronograph gear main body portion 51 is arranged to be approximately similar to the body part. 81 hour chronograph gear main body. That is, the minute chronograph gear main body portion 51 includes a hollow hub portion or a hollow shaft portion 51a, and a portion of 51b minute Chronograph gear and a 51c minute chronograph gear that is integrated with the shaft portion 51a, and is engaged with the first intermediate gear increasing the 41c speed by the 51b minutes chronograph pinion part. The minute chronograph gear 51c also operates as a clutch receiving plate portion.

The minute chronograph gear control mechanism portion 53 is arranged to be similar to the 83 hour chronograph gear control mechanism portion. That is, the mechanism portion. 53 minute chronograph gear control system includes a 54 minute chronograph wheel stem, a 55 minute chronograph clutch ring, a 56 minute chronograph clutch spring, a spring support plate. minute chronograph clutch (spacer) 57, and a minute chronograph heart cam 58. The minute chronograph wheel stem 54 includes a small diameter rod portion 54a, a large diameter neck portion 54b, an intermediate diameter shank portion 54c, a small diameter shank portion 54d, and a small diameter shaft portion for insertion of a pin 54e, and is inserted to rotate slidably to the hollow shaft portion 51a of the minute chronograph gear main body portion 51 through the small diameter rod portion 54a. The minute chronograph clutch ring 55 is engaged with the large diameter snare portion 54b and the intermediate diameter shank portion 54c of the minute chronograph wheel rod 54 to slidably replace in the line direction. relative to the wheel spindle 54. One end of the minute chronograph clutch spring 56 comes into pressure contact with a spring bearing portion 55a of the clutch ring 55, and the Another end of the minute chronograph clutch spring 56 is locked to the minute chronograph clutch spring support plate 57. The support plate 57 is attached to the wheel shaft 54. Also, by for example, in the wheel stem 54, a retainer 105a is formed in the dial side direction T1 in the thickness directions T1 and T2 of the timepiece 2 on the tip side of the tig part. e of small diameter 54a. In addition, for example, in the wheel rod 54, a retainer 105b is formed in the rear cover direction T2 in the end side of the small diameter rod portion 54a. Here, a minute 59 chronograph gear mechanism clutch mechanism of the 50 minute chronograph gear mechanism has the shape of a vertical clutch, and includes the 55 minute chronograph clutch ring, the spring 56 minute chronograph clutch clutch, and 51c minute chronograph clutch receiving plate part.

The clutch ring 55 includes an annular concave portion 55c on the outer circumferential surface, and if a minute operation lever engaging portion 6b is moved in a direction B3 on the inner side of the direction of diameter in the direction of the annular concave portion 55c and is inserted at the annular concave portion 55c, the clutch ring 55 moves in the direction T1 on the dial side in the axis line direction against the force of spring of the clutch spring 56, engagement between the clutch ring 55 of the minute chronograph gear control mechanism portion 53 and the clutch receiving plate portion 51c of the body portion 51 minute chronograph gear main gear is released, and the minute chronograph gear main body portion 51 can be rotated freely relative to the control mechanism portion of the At this time, according to the engagement between the operating lever engagement portion of the minutes 6b and the annular concave portion 55c of the clutch ring 55, the movement of the portion of the 54th shaft and 14 minute chronograph hand is prohibited.

On the other hand, if the operating lever engagement portion of the minutes 6b is moved in a direction B4 and the engagement between the operating lever engagement portion of the minutes 6b and the portion 55c annular concave of the clutch ring 55 is released, the clutch ring 55 moves in the direction 12 of the rear cover side in the axis line direction under the operation of the spring force of the clutch spring 56, and the clutch ring 55 of the minute chronograph gear control mechanism portion 53 and the clutch receiving plate portion 51c of the gear main body portion of the Chronograph minutes 51 are engaged with each other. Therefore, the minute chronograph hand 14 is rotated about the center line B according to the rotation of the minute chronograph gear main body portion 51, and a chronograph measurement can be made.

As understood by the explanatory cross-secant view of FIG. 3, the second speed increasing intermediate wheel 42 includes a second speed increasing intermediate wheel shaft 42a, and a second speed increasing intermediate gear 42b and a second speed increasing intermediate gear 42c which are integrated with the shaft 42a, and is engaged with the minute 51c chronograph gear of the 51 minute chronograph gear main body by the second intermediate gear increasing speed 42b.

As understood by the explanatory cross-secant view of FIG. 3, the second chronograph gear mechanism 60 is arranged to be approximately similar to the 80 hour chronograph gear mechanism or the 50 minute chronograph gear mechanism. That is, the second mechanism Chronograph gear 60 includes the second chronograph gear main body portion 61 and a second chronograph gear control mechanism portion 63. The second chronograph gear main body portion 61 is arranged to be approximately the same as the 81 hour chronograph gear main body part or the 51 minute chronograph gear main body part. That is, the second part of chronograph gear main body 61 includes a hollow hub portion or a hollow shaft portion 61a, a second chronograph pinion portion 61b and a chronograph gear second 61c which are integrated with the shaft portion 61a, and a clutch receiving plate portion 61d which is a clutch plate, and is engaged with the second speed increasing intermediate gear 42c by the second portion of chronograph sprocket 61b.

The second part of the chronograph gear control mechanism 63 is arranged to be similar to the 83 hour chronograph gear control mechanism portion or the minute chronograph gear control mechanism portion. 53. That is, the second part of a chronograph gear control mechanism 63 includes a second chronograph wheel pin 64, a second chronograph clutch ring 65, a second clutch spring chronograph 66, a second chronograph clutch spring bearing bearing surface 67, and a second chronograph core wheel 68. The second chronograph wheel stem 64 includes a small diameter rod portion 64a, a collar portion of a large diameter 64b, an intermediate diameter shank portion 64c, a small diameter shank portion 64d, and a small diameter shaft portion for insertion of a 64th needle, and is inserted to rotate slidably around the hollow shaft portion 61a of the second part of the chronograph gear main body 61 by the portion 64a of small diameter rod. The second chronograph clutch ring 65 is engaged with the large diameter snare portion 64b and the intermediate diameter shank portion 64c of the second chronograph wheel shank 64 to slidably replace in the line direction of relatively one axis relative to the wheel rod 64. One end of the minute chronograph clutch spring 66 comes into pressure contact with a spring bearing portion 65a of the clutch ring 65, and the other end of the second chronograph clutch spring 66 is locked toward the second chronograph clutch spring support plate 67. The support plate 67 is attached to the wheel rod 64. In addition, for example, in the stem wheel 64, a retaining device is formed by a receiving surface 107a of the center tube 107 in the dial side direction T1 in the thickness directions T1 and T2 of the watch part. e 2 in the tip side of the small diameter rod portion 64a. In addition, for example, in the wheel rod 64, a retainer 106 is formed in the rear cover direction T2 in the end side of the small diameter rod portion 64a. Here, a second chronograph gear clutch mechanism 69 of the second chronograph gear mechanism 60 is in the form of a vertical clutch, and includes the second chronograph clutch ring 65, the second clutch spring chronograph 66, the second chronograph clutch spring support plate 67, and the second chronograph clutch receiving plate portion 61d.

The clutch ring 65 includes an annular concave portion 65c on the outer circumferential surface, and if a second operating lever engaging portion 6c is moved in the C3 direction in the inner side of the direction of rotation. in the direction of the annular concave portion 65c and is inserted in the annular concave portion 65c, the clutch ring 65 moves in the T1 direction on the dial side in the axis line direction against the spring force of the clutch spring 66, engagement between the clutch ring 65 of the second chronograph gear control mechanism portion 63 and the clutch receiving plate portion 61 d of the second body portion chronograph gear main 61 is released, and the second chronograph gear main body portion 61 can be freely rotated relative to the second control mechanism portion. At this time, according to the engagement between the second operating lever engagement portion 6c and the annular concave portion 65c of the clutch ring 65, the movement of the operating part 64th shaft and the second chronograph hand 14 is prohibited.

On the other hand, if the second operating lever engagement portion 6c is moved in a direction C4 and the engagement between the second operating lever engaging portion 6c and the annular concave portion 65c of the clutch ring 65 is released, the clutch ring 65 moves in the direction T2 of the rear cover side in the axis line direction under the operation of the spring force of the clutch spring. clutch 66, and the clutch ring 65 of the second chronograph gear control mechanism portion 63 and the clutch receiving plate portion 61 d of the second chronograph gear main body portion 61 are engaged with each other. Therefore, the second chronograph hand 14 is rotated about the center line C according to the rotation of the second chronograph gear main body portion 61, and a chronograph measurement can be made.

The regulator exhaust mechanism 30 of the timepiece 2 is arranged to be similar to a conventional regulator exhaust, and includes the rocker with a spring 31, an escape wheel 32, and a fork of In the regulator exhaust mechanism 30, the exhaust wheel 32 is engaged with the second chronograph gear 61c of the second chronograph gear main body portion 61 by an exhaust pinion 32a.

Accordingly, in the timepiece 2, the rotational speed of the barrel drum wheel 25 is still controlled by the regulator exhaust mechanism 30 by the wheel train increasing the speed 4 which includes the 51c minute chronograph gear or the second chronograph gear 61c, and the speed control of the timepiece 2 is performed.

Next, the operation of the timepiece 2 which includes the chronograph mechanism 1 arranged as described above will be described.

In the timepiece 2 with the chronograph mechanism, firstly, if the reset switch or the reset button 9b is pressed in a direction H1 and the chronograph mechanism 1 is set to a reset position or a state S0, linked elements of the timepiece 2 adopt the state shown in FIG. 3.

That is, in the reset state S0, on one side, the operating lever engagement portion of the hours 6a, the operating lever engagement portion of the minutes 6b, and the second operation lever engagement part 6c are engaged with the concave portion 85c of the 85 hour chronograph clutch ring, the concave portion 55c of the minute chronograph clutch ring. 55, and the concave portion 65c of the second chronograph clutch ring 65 respectively, the engagement between the respective clutch rings 85, 55 and 65 and the corresponding clutch bearing portions 81c, 51c and 61c is released, and on the other hand, a hour hammer portion 91a, a minute hammer portion 91b, and a second hammer portion 91c of a hammer lever 91 are pressed to the corresponding core cams 88, 58, and 68. , and the rotation of the rods 84, 54 and 64 is regulated e or prohibited in a state in which the chronograph rod 84 hours, the chronograph minute rod 54, and the second chronograph rod 64 are reset to a zero point which is an initial position.

In the S0 reset state, the portion of the 83 hour chronograph gear control mechanism portion that occupies the most rotational load (moment of inertia) of the chronograph gear mechanism of the 80 hours is separated from the hours 81 main chronograph gear body part and only the hours 81 main chronograph gear body part is rotated according to the operation of the wheel gear for general manual operation, the portion of the minute chronograph gear control mechanism portion 53 that occupies the most rotational load (moment of inertia) of the minute chronograph gear mechanism 50 is separated from the main body portion of the 51 minute chronograph gear and only the 51 minute chronograph gear main body part is rotated according to the operation of the wheel gear for operation man the general part, and the part of the second part of the chronograph gear control mechanism 63 which occupies the most rotational load (moment of inertia) of the second chronograph gear mechanism 60 is separated from the second part of chronograph gear main body 61 and only the second chronograph gear main body portion 61 is rotated according to the operation of the wheel gear for general manual operation.

With respect to the speed increasing wheel train 4, the barrel drum gear portion 24 of the barrel drum wheel 25 is connected to the escapement wheel 32 of the regulator exhaust mechanism 30 by the first speed increasing intermediate wheel 41, the minute chronograph gear main body portion 51, the second speed increasing intermediate wheel 42, and the second chronograph gear main body portion 61, (e.g. if it is assumed that the minute chronograph gear main body portion 51 corresponds to a center wheel and pinion, the second intermediate speed increasing wheel 42 corresponds to a third wheel and pinion, and the second body portion main gear of chronograph 61 corresponds to a second wheel and pinion,) except that the first intermediate wheel increasing the speed 41 has in addition a wheel, the gear train Increasing the speed is arranged to be substantially similar to the wheel set for manual operation in which conventional general speed control is performed.

That is to say, in the wheel train increasing the speed 4 of the timepiece 2, although the minute chronograph gear mechanism 50 and the second chronograph gear mechanism 60 are incorporated in the wheel set 4, since the parts of the minute chronograph gear mechanism 50 and the second chronograph gear mechanism 60 which are incorporated in the wheel set 4 are limited to the main body portion of minute chronograph gear 51 and the second chronograph gear main body part 61 in which the rotational load is small, control and exhaust operations substantially similar to the general regulation exhaust mechanism 30 which performs a speed control with respect to the wheel gear increasing the overall speed for a manual operation can be performed, and in this way, it is possible to avoid a substantial decrease in the quality of the control and exhaust operations.

On the other hand, in the timepiece 2 with a chronograph mechanism, firstly, when the timepiece is positioned in the reset state SO, if the start and stop switch (operation) or the operation button 9a is pressed in a direction J1 and the chronograph mechanism 1 is set to a start position (start of chronograph measurement) or a state S1, the linked elements of the timepiece 2 adopt the state shown in FIG. 6. In addition, a case, where the start and stop switch (operation) 9a is pressed in the J1 direction and the chronograph mechanism 1 is set to the start state (chronograph start of measurement) S1 when the timepiece is positioned in a stop state S2 described below is also similar.

That is to say, in the start state (beginning of chronograph measurement) S1, on one side, the hammer part of the hours 91a, the hammer part of the minutes 91b, and the second hammer portion 91c of the hammer lever 91 are separated from the corresponding core cams 88, 58 and 68 and the timing control of the 84 hours chronograph stem, the minute chronograph rod 54, and the second chronograph rod 64 is released, on the other hand, the hours operation lever engagement portion 6a, the minutes operating lever engagement portion 6b, and the second operating lever engagement portion 6c are extracted in directions A4, B4 and C4 from the concave portion 85c of the hours 85 chronograph clutch ring, the concave portion 55c of the minute chronograph clutch ring 55, and the concave portion 65c the second chronograph clutch ring 65 respectiveme nt, and the respective clutch rings 85, 55 and 65 are moved in the direction T2 under the operations of the respective clutch springs 86, 56 and 66 and are engaged with the corresponding clutch receiving plate portions 81c, 51c and 61d.

In the start state (start of chronograph measurement) S1, the hour counterclockwise gear control mechanism portion 83 of the 80 hour chronograph gear mechanism is engaged with the main body portion. 81 hours chronograph gear, the minutes 53 minute chronograph gear control mechanism part of the 50 minutes chronograph gear mechanism is engaged with the minute 51 minute chronograph gear main body part, the second part of the chronograph gear control mechanism 63 of the second chronograph gear mechanism 60 is engaged with the second chronograph gear main body portion 61, the chronograph gear control mechanism portions 83 , 53 and 63 are rotated integrally according to the chronograph measurement respectively, and the hour chronograph hand 14, the chronograph needle 15 minutes, and the second chronograph hand 16 are turned.

In the timepiece 2 with a chronograph mechanism, compared to a case where the chronograph gear mechanisms 50 and 60 are positioned in the end of the wheel train, since the second gear mechanism of chronograph 60 which includes the second chronograph hand 16, or the minute chronograph gear mechanism 50 which includes the minute chronograph hand 15 is positioned in the middle of the wheel train 4, the timepiece can be turned in a stable state without shaking. The case of the 80 hour chronograph gear mechanism which includes the 14 hour chronograph hand is also similar. As a result, a concern that the fluctuation of each of the chronograph hands 14, 15 and 16 occurs is decreased.

In addition, in the timepiece 2 with a chronograph mechanism, if the start and stop switch (operation) or the operation button 9a is pressed in the J1 direction again when the piece timepiece is set to the start state S1 and the chronograph mechanism 1 is set to the stop position (stop chronograph measurement) or the state S2, the linked elements of the timepiece 2 adopt the state shown in FIG. 7.

That is to say, in the stopping state (stop measuring chronograph) S2, the operating lever engagement portion of the hours 6a the operating lever engagement portion minutes 6b, and the second operating lever engaging portion 6c are inserted in the directions A3, B3 and C3 in the concave portion 85c of the 85 hours chronograph clutch ring, the concave portion 55c of the minute chronograph clutch ring 55, and the concave portion 65c of the second chronograph clutch ring 65, respectively, which are against the respective clutch springs 86, 56 and 66, the respective clutch rings. 85, 55 and 65 are moved in the direction T1, and the engagement between the rings and the corresponding clutch receiving plate portions 81c, 51c and 61d is released. As a result, the main gear body portions 81, 51 and 61 of the chronograph gear mechanisms 80, 50, 60 themselves constitute a portion of the respective wheel sets 4 and 5 and are rotatable. However, the rotation of the main gear body portions 81, 51 and 61 is not transmitted to the chronograph gear control mechanism parts 83, 53 and 63 of the chronograph gear mechanisms 80, 50 and 60 In addition, since the rotation of the shaft portions 84, 54 and 64 of the respective chronograph gear control mechanism portions 83, 53 and 63 is adjusted by the respective operating lever engagement portions 6a, 6b and 6c, also in this state, the concern that the fluctuation of the needles 14, 15 and 16 occurs is decreased.

In addition, in the chronograph mechanism 1 of the timepiece 2, to perform the start, stop, or the operation of returning to zero of the chronograph measurement when the operating switch 9a or the reset switch 9b is pressed, the operation lever, the hammer lever, and the like are operated, and the operation is controlled by the control mechanism such as the operation cam as desired. However, since it is obvious that the operation can be carried out by the well-known structure or by appropriately using or combining structures similar to the well-known structure while the operation of the lever engagement parts of operation shown 6a, 6b and 6c is excluded, here the descriptions are omitted. For example, the hammer mechanism is arranged to perform the hammer operation which is known in JP-A-2004-294279 or the like.

As described above, in the timepiece 2 with a chronograph mechanism, since part of the gear, which constitutes the wheel train increasing the speed 4 which is rotated according to the rotation of the wheel barrel drum 25 and wherein the speed control of the end-side wheel is effected by the regulator exhaust mechanism, is comprised of the chronograph gear main body portions 51 and 61 which are connected separately from the rods. of the chronograph 54 and 64 by the clutch mechanisms 59 and 69, the chronograph gear mechanisms 50 and 60 can be incorporated in the middle of the wheel train increasing the speed 4 not the terminal or the last stage of the wheel train increasing the speed 4. Therefore, the rotation of the chronograph gear mechanisms 50 and 60 can be stably performed and the increase in the load can be eliminated. nted. Moreover, in the timepiece 2 with a chronograph mechanism, since the chronograph gear main body parts 51 and 61 which are required for the transmission of rotation in the wheel train increasing the speed 4 in the mechanisms The chronograph gearing 50 and 60 can be separated from the parts other than the chronograph rods 54 and 64 in the chronograph gear mechanisms 50 and 60 by the clutch mechanisms 59 and 69, the increase in the load of the Increasing speed 4 wheel train due to the interposition of the chronograph gear main body parts 51 and 61 can be suppressed in maximum proportions.

In addition, in the timepiece 2 with a chronograph mechanism, since the clutch mechanisms 59 and 69 consist of a vertical clutch in which the chronograph rods 54 and 64 are connected to the main body parts. chronograph gear 51 and 61 in a substantially vertical direction, if the vertical clutch mechanisms 59 and 69 are set to the separated state, the chronograph stems 54 and 64 are separated from the gear main body portions chronographs 51 and 61 and operate as the general timepiece, and if the vertical clutch mechanisms 59 and 69 are set to the connected state, the chronograph rods 54 and 64 are connected to the main body portions of the chronograph gear 51 and 61, and the chronograph operation can be performed.

In addition, in the timepiece 2 with a chronograph mechanism, since the chronograph rods 54 and 64 are arranged to be integrated with the clutch rings 55 and 65, the clutch springs 56 and 66 , and the clutch spring support plates 57 and 67 and the chronograph gear main body portions 51 and 61 are arranged to be integrated with the clutch plates 51c and 61d, when the clutch mechanisms 59 and 69 are set to separate state, the load or disadvantage can be suppressed to a maximum extent due to the fact that the chronograph gear main body parts 51 and 61 are interposed in the middle of the wheel set increasing the speed 4.

In addition, in the timepiece 2 with a chronograph mechanism, since the minute chronograph gear main body part 51 of the 50 minute chronograph gear mechanism and the second main body part Chronograph gear 61 of the second chronograph gear mechanism 60 are incorporated in the middle of the wheel train increasing the speed 4, the wheel set can be effectively used.

In addition, in the timepiece 2 with a chronograph mechanism, since the hour wheel 71 and the minute wheel 72 which are connected to the wheel train decreasing the speed 5 which is rotated according to the rotation of the barrel drum wheel 25 are provided, the hour wheel 71 and the minute wheel 72 can be driven to the state where the load is suppressed in the maximum proportions according to the rotation of the barrel drum wheel 25 in which the Speed regulation is performed by the regulator exhaust mechanism 30 and the interposition of the wheel train decreasing the speed 5.

In addition, in the timepiece 2 with a chronograph mechanism, a gear in the gear train decreasing the speed 5 consists of the hours chronograph gear 81 which is connected separately from the chronograph rod. hours 84 by the hour clutch mechanism 89 and the speed-reducing wheel gear wheel operates as the hour chronograph gear, the wheel set can be effectively used. In the timepiece 2 with a chronograph mechanism, since the chronograph gear mechanisms 50 and 60 are incorporated as a part of the wheel train which is essential for speed regulation, the number of wheels, bearings, or similar related to the entire timepiece 2 with a chronograph mechanism can be minimized. Therefore, a compact configuration is possible.

In addition, understandably, the disposition of each chronograph display can be modified according to the desire and may be different from the arrangement shown in FIG. 2. For example, the minute chronograph gear mechanism 50 can be arranged in the 12:00 position, the minute chronograph gear mechanism 50 can be positioned in the 2:00 position, the wheel 80 hours chronograph can be arranged in the 10:00 position, and the balance with a spring 31 can be arranged in the 6:00 position.

In the description above, the timepiece 2 with a chronograph mechanism in which the second hand is not present to remove the load in maximum proportions is described. However, if desired, the chronograph timepiece may include a small seconds hand.

FIG. 8a shows a timepiece 2B with a chronograph mechanism which includes a small seconds hand 17 in the 12:00 position. The outline of a chronograph mechanism 1B of the timepiece 2B with a chronograph mechanism is shown in a cross-secant view of FIG. 9. In timepiece 2B with the chronograph mechanism 1B of FIGS. 8a and 9, the same elements as the elements shown in FIGS. 1 to 7 are indicated by the same reference numbers, and with respect to elements which are approximately similar but have some differences, a suffix M is added after the reference numbers of the elements of Figs. 1 to 7.

As understood from FIG. 9, the chronograph mechanism 1B includes a second wheel 95 which is engaged to the second chronograph gear 61c of the second chronograph gear portion 61 of the second chronograph gear mechanism 60 by a second gear 95b by a second gear Intermediate 43. A rod 95a of the second wheel 95 is rotatable about an axis line of center K which is positioned in the position of 12:00. In addition, although not illustrated in detail, in the chronograph mechanism 1B of FIG. 9, the same regulator exhaust mechanism 30 as the regulator exhaust mechanism 30 shown in FIG. similar is connected to the second chronograph gear portion 61 of the second chronograph gear mechanism 60 or the second gear 95b of the second wheel 95.

Also in the timepiece 2B with a chronograph mechanism, a concern that the chronograph hands 16, 15 and 14 are shaken is decreased.

In addition, in the case where the small seconds hand is present, the window can not be present as a timepiece 2C with a chronograph mechanism 1C shown in FIG. 8b instead of the window 7a which is formed in the dial 7 so that the rocker with a spring 31 is seen as FIG. 8a.

In addition, for example, the display of the small seconds hand can be performed in the 9:00 position as a 2D timepiece with a 1D chronograph mechanism shown in FIG. 8c instead of the display of the small seconds hand which is made in the position of 12:00. In this case, for example, the regulating exhaust mechanism 30 other than the spring balance may be disposed in the position of approximately 12:00.

Claims (9)

1. A timepiece (2) with a chronograph mechanism (1), comprising: a barrel drum wheel (25); and a speed-increasing wheel train (4) which is rotated according to the rotation of the barrel drum wheel (25) and wherein speed control of a wheel of a terminal side is effected by an escape mechanism regulator (30), wherein at least one gear in the speed-increasing wheel train (4) is arranged as a chronograph gear which is separately connected to a chronograph rod by a clutch mechanism. 2. The timepiece (2) with a chronograph mechanism (1) according to claim 1, wherein the clutch mechanism is arranged as a vertical clutch in which the chronograph rod is connected to the chronograph gear in a vertical direction. 3. The timepiece (2) with a chronograph mechanism (1) according to claim 2, wherein the chronograph rod is arranged to be integrated with a clutch ring, a clutch spring, and a plate of clutch spring support (86), and the chronograph gear is arranged to be integrated with a clutch plate. 4. The timepiece (2) with a chronograph mechanism (1) according to claims 2 or 3, wherein the chronograph stem includes a second chronograph rod, the clutch mechanism includes a second clutch mechanism, and the at least one gear includes a second chronograph gear (61c) that is separately connected to the second chronograph stem by the second clutch mechanism. The timepiece (2) with a chronograph mechanism (1) according to any one of claims 2 to 4, wherein the chronograph stem includes a minute chronograph rod, the clutch mechanism includes a mechanism of the minutes, and the at least one gear includes a minute chronograph gear (51c) which is separately connected to the minute chronograph rod by the minute clutch mechanism. The timepiece (2) with a chronograph mechanism (1) according to any of claims 2 to 5, further comprising: an hour wheel (71) and a minute wheel (72) which are connected to a speed-reducing wheel train (5) rotated in accordance with the rotation of the barrel drum wheel (25). The timepiece (2) with a chronograph mechanism (1) according to claim 6, wherein a gear in the gear train decreasing the speed (5) is arranged as an hour chronograph gear which is connected separately to a hours chronograph rod by a clutch mechanism of the hours. The timepiece (2) with a chronograph mechanism (1) according to claim 7, wherein an hour gear and a minute gear are engaged with the hour chronograph gear by an intermediate gear (43). . 9. The timepiece (2) with a chronograph mechanism (1) according to any one of claims 1 to 8, further comprising: a second wheel (95) in the form of a small seconds hand (17).