JPH11174162A - Barrel wheel and mechanical time piece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a mechanical time piece loading a barrel wheel with good endurance which reduces frictional resistance between rotation members. SOLUTION: A barrel wheel 100 is provided with a barrel arbor 102, a barrel cover 104, a barrel gear 106 and a spring 110. The spring 110 is fixed at the inner end 110a to a middle shaft part 102a of the barrel arbor 102 and fixed at the outer end 110b to the inner wall of outside wall 106b of the barrel gear 106. The first inner wall 130b of the ball bearing 130 is fitted in the first inner wheel attaching part 102c of the barrel arbor 102 and the first outer wheel 130b is fitted in the center hole 104c of the barrel cover 104. The second inner wheel of the second ball bearing 140 is fitted in the second inner wheel attaching part 102d of the barrel arbor 102 and the second outer wheel 140b is fitted in the center hole 106c of the barrel gear 106.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel car for a device such as a timepiece driven by a mainspring.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved barrel car that can reduce frictional resistance between a barrel lid and a barrel barrel and reduce frictional resistance between a barrel gear and a barrel barrel. The barrel car of the present invention can be applied to both manual winding mechanical watches and self-winding mechanical watches, and can also be applied to mechanical watches such as watches, pocket watches, table clocks, and wall clocks. it can. Furthermore, the barrel car of the present invention can be applied to power sources such as timers, remaining time counters, time information display devices, calendar information display devices, and measurement devices.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
Is the barrel 302, barrel lid 304, barrel gear 306
Is provided. A mainspring 310 is housed in a space formed by the barrel lid 304 and the barrel gear 306. The outer peripheral wall 304b of the barrel lid 304 is the outer peripheral wall 30 of the barrel gear 306.
6b. The inner end 310a of the mainspring 310 is fixed to the intermediate shaft portion 302a of the barrel true 302,
10 is the outer peripheral wall 306b of the barrel gear 306.
It is fixed to the inner wall. Center hole 304c of barrel lid 304
Is rotatably incorporated in the lid guide shaft 302c of the barrel true 302. The central hole 306c of the barrel gear 306 is rotatably incorporated in the gear guide shaft 302d of the barrel true 302.

[0003] The barrel true 302 includes an upper shaft portion 302e incorporated in a barrel holder (not shown), a lower shaft portion 302f incorporated in a main plate (not shown), and a square hole wheel (not shown). And a square shaft portion 302g. Barrel gear 306
Has a gear portion 306g outside the outer peripheral wall 306b.
The gear 306g is configured to mesh with a front wheel train (not shown) and rotate a display member (not shown). When the square wheel is rotated by a hoisting mechanism (not shown), the barrel true 302 rotates by being guided by the main plate, and simultaneously rotates with respect to the barrel lid 304 and the barrel gear 306.

[0004]

However, in the conventional barrel car 300, "sliding friction" is generated between the lid guide shaft 302c of the barrel barrel 302 and the center hole 304c of the barrel lid 304.
Causes frictional resistance, and the gear guide shaft 3
02d and the central hole 306c of the barrel gear 306 caused frictional resistance due to "sliding friction". Therefore, when the mainspring 310 housed in the barrel car 300 is wound up, a large frictional resistance has been generated. Furthermore, in the conventional barrel car 300, torque loss occurs, the number of windings of the mainspring decreases, and as a result, there is a high possibility that the duration of the timepiece will decrease. Therefore, it was difficult to realize a high performance barrel car. When the barrel car 300 is used for a long period of time, abrasion is caused on the lid guide shaft 302c of the barrel barrel 302, the center hole 304c of the barrel lid 304, the gear guide shaft part 302d of the barrel barrel 302, and the center hole 306c of the barrel gear 306. This has caused a problem that it is difficult to improve the durability performance of the barrel car 300.

Accordingly, an object of the present invention is to reduce the frictional resistance between the barrel true and the barrel lid and the frictional resistance between the barrel true and the barrel gear in order to solve the conventional problems described above. An object of the present invention is to provide a barrel car that can rotate efficiently. Another object of the present invention is to reduce the wear of the barrel true guide shaft portion, the center hole of the barrel lid, and the center hole of the barrel gear, and to provide a barrel car with high durability and high performance. It is a further object of the present invention to provide a mechanical timepiece or the like equipped with a barrel car having low frictional resistance during rotation and excellent durability.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a barrel car for an apparatus powered by a mainspring, which is arranged between a barrel barrel and a barrel lid. A first ball bearing for rotatably supporting the true, a barrel true and a barrel gear,
A second ball bearing is provided for rotatably supporting the barrel gear with respect to the barrel true. Also,
The present invention relates to a barrel car including a barrel true, barrel lid, barrel gear, and a mainspring, wherein a first ball bearing in which an inner ring is fixed to the barrel lid and an outer ring is fixed to the barrel lid, and an inner ring is fixed to the barrel true. And a second ball bearing whose outer ring is fixed to the barrel gear. The spring of the barrel car according to the present invention is housed in a space formed by the barrel lid and the barrel gear, the inner end is mounted on the barrel, and the outer end is in contact with the barrel gear.

Further, according to the present invention, a barrel car for an apparatus using a mainspring as a power source includes a barrel barrel having a first shaft portion, a second shaft portion, and a third shaft portion. A first ball bearing mounted on a side closer to a first shaft portion of the barrel true;
It has a first outer ring and a plurality of balls incorporated between the first inner ring and the first outer ring. A second ball bearing mounted on a side closer to the second shaft portion of the barrel true; a second outer ring; and a plurality of balls incorporated between the second inner ring and the second outer ring. Having. Further, the barrel car according to the present invention includes a barrel lid attached to the first outer ring, a barrel gear attached to the second outer ring, and attached to be integrated with the barrel lid, and a barrel lid and the barrel gear. The spring is housed in the formed space, the spring having an inner end attached to the third shaft portion of the barrel barrel and an outer end in contact with the inner surface of the outer peripheral wall of the barrel gear.

By using a ball bearing in the rotating part of the barrel car, the frictional resistance between the rotating members can be reduced. Further, the durability performance of the barrel car can be improved. In the barrel car of the present invention, the barrel is housed in the space formed by the barrel lid and the barrel gear, the inner end is mounted on the barrel, and the outer end is in contact with the inner surface of the outer peripheral wall of the barrel gear. It is preferable to provide a mainspring that has been set.
In such a configuration, the outer end of the mainspring is configured to contact the inner surface of the outer peripheral wall of the barrel gear using a slipping attachment. The outer end of the mainspring may be fixed to the inner surface of the outer peripheral wall of the barrel gear. With this configuration,
A mechanical timepiece equipped with a barrel car with good durability can be realized.

The barrel wheel of the present invention further has a barrel wheel pin having a non-circular shaft portion for fitting into the square hole of the square wheel wheel, and being attached to one shaft portion of the barrel barrel. Is preferred. With this configuration, the strength of the shaft for fitting with the square hole of the square wheel can be increased. Moreover, the barrel barrel of the barrel wheel of the present invention may be configured to have a non-circular shaft portion for fitting into the square hole of the square wheel. Further, the mechanical timepiece using the barrel wheel of the present invention is a winding mechanism for winding up a mainspring housed in the barrel wheel, a transmission wheel train rotated by the force of the mainspring housed in the barrel wheel, and a transmission wheel train. It is configured to include a speed control mechanism and an escape mechanism for controlling the rotation speed, and a display member that is rotated by rotation of the transmission train so as to display information about time.

Furthermore, the mechanical timepiece using the barrel wheel of the present invention preferably has a ball bearing for rotatably supporting the barrel wheel. With this configuration, it is possible to realize a device such as a mechanical timepiece equipped with a high-performance barrel car having excellent durability performance.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (1) Configuration of barrel barrel Referring to FIG. 1, barrel barrel 100 of the present invention includes barrel barrel 10
2, a barrel lid 104, and a barrel gear 106. A mainspring 110 is housed in a space formed by the barrel lid 104 and the barrel gear 106. The outer peripheral wall 104b of the barrel lid 104 is fitted to the outer peripheral wall 106b of the barrel gear 106. The inner end 110a of the mainspring 110 is fixed to the intermediate shaft portion 102a of the barrel true 102. 1. Center line 101A in FIG.
When the barrel car 100 of the present invention is used for a clock or a hand-wound wristwatch, the outer end 110b of the mainspring 110 is connected to the outer peripheral wall 10 of the barrel gear 106.
6b is fixed to the inner wall.

Referring to the left part of the center line 101A of FIG. 1, when the barrel wheel 100 of the present invention is used in a self-winding wristwatch, the outer end 110b of the mainspring 110 is connected to the outer peripheral wall 106b of the barrel gear 106. It is assembled in contact with the inner wall. The slipping attachment 112 attaches the outer end 110b of the mainspring 110 to the outer peripheral wall 10 of the barrel gear 106.
6b. Referring to FIGS. 1 and 2, the first ball bearing 130 is mounted on the first inner race 1.
30a, a first outer ring 130b, a plurality of first balls 130c incorporated between the first inner ring 130a and the first outer ring 130b, and a first retainer 130d for determining the position of the first ball 130c. . First inner ring 130a
Is fitted to the first inner ring attaching portion 102c of the barrel true 102. The fit between the first inner ring 130a and the first inner ring mounting portion 102c of the barrel true 102 may be an interference fit with a margin of several micrometers to ten micrometers. In addition, this fitting is a gap fitting, and the first fitting is performed.
The inner ring 130a is attached to the first inner ring mounting portion 102 of the barrel box 102.
c may be fixed by bonding.

The first outer ring 130b is fitted in the center hole 104c of the barrel lid 104. The fit between the first outer ring 130b and the center hole 104c of the barrel lid 104 may be an interference fit with a margin of several micrometers to tens of micrometers. Also, this fitting is a clearance fitting, and the first outer ring 130b is connected to the center hole 1 of the barrel lid 104.
04c may be fixed by bonding. By using the first ball bearing 130, the barrel 102 can be mounted on the barrel lid 1.
04 in a “rolling friction” state. The second ball bearing 140 is used for the second inner ring 14.
0a, the second outer ring 140b, the second inner ring 140a and the second
Plural second balls 1 incorporated between outer ring 140b
40c and a second retainer 140d for determining the position of the second ball 140c.

The second inner ring 140a is the second inner ring 140a
It is fitted to the inner ring mounting portion 102d. Second inner ring 140a
The fit between the barrel mount 102 and the second inner ring mounting portion 102d of the barrel true 102 may be an interference fit having a margin of several micrometers to tens of micrometers. Further, this fitting is a clearance fitting, and the second inner ring 140a is attached to the barrel 1
02 may be fixed to the second inner ring mounting portion 102d by bonding. The second outer ring 140b is provided in the center hole 10 of the barrel gear 106.
6c. Second outer ring 140b and barrel gear 106
The center hole 106c may be an interference fit having a margin of several micrometers to tens of micrometers. Also, this fitting is a gap fitting,
The second outer ring 140b may be fixed to the center hole 106c of the barrel gear 106 by bonding.

By using the second ball bearing 140, the barrel 102 can rotate with respect to the barrel gear 106 in a “rolling friction” state. Shinko barrel 1
02 has an upper shaft portion 102e and a lower shaft portion 102f incorporated in a main plate (not shown). A screw portion 102m for screwing a square hole wheel set screw (not shown) is provided on the upper shaft portion 10.
2e. That is, the barrel true 102 includes an upper shaft portion 102e forming the first shaft portion, a lower shaft portion 102f forming the second shaft portion, and an intermediate shaft portion 102a forming the third shaft portion.
And The barrel wheel pin 150 is fixed to the upper shaft portion 102e. The barrel shaft pin 150 is provided with a square shaft portion 150a for fitting with a square hole of a square wheel (not shown). The shape of the square hole of the square wheel may be a round cut shape obtained by cutting a part of a circle, a two-sided cut shape obtained by cutting two sides of a circle, or another non-circular shape. It may be. The outer diameter shape of the square shaft portion 150a is formed so as to match the shape of the square hole of the square wheel. By using the barrel wheel pin 150, it is possible to form a square shaft portion having a size larger than the structure in which the square shaft portion is provided in the barrel true 102.

Without using the barrel pin 150, the upper shaft 10
The outer periphery of 2e may be provided with a square shaft portion for fitting with the square hole of the square wheel. With this configuration, the number of components can be reduced. The barrel gear 106 has a gear portion 106g outside the outer peripheral wall. When the barrel wheel 100 is incorporated in a timepiece, the gear portion 106g of the barrel wheel 106 is configured to mesh with a front train wheel (not shown) and rotate a display member (not shown). Further, when the square wheel is rotated by a winding mechanism (not shown) of the watch, the barrel true 102 is guided and rotated by the main plate (not shown) so as to rotate with respect to the barrel lid 104 and the barrel gear 106. It is composed of

(2) Operation of barrel barrel Next, the operation of the barrel barrel 100 of the present invention will be described.
Referring to FIG. 3 and FIG. 4, the lower shaft portion 10 of the barrel car 100 is provided.
2f is rotatably incorporated in the lower slide bearing 160b of the main plate 160. The barrel wheel pin 150 is rotatably incorporated into the upper slide bearing 162b of the barrel holder 162. As a modified example, as shown in FIG. 5, a lower ball bearing 156 is prepared, the lower shaft portion 102f of the barrel car 100 is fitted to the inner ring 156a of the lower ball bearing 156, and the outer ring 156b of the lower ball bearing 156 is attached to the main plate 160. You may comprise so that it may fit. In this case, the upper ball bearing 1
58, the barrel wheel pin 150 is preferably fitted to the inner ring 158a of the upper ball bearing 158, and the barrel ring 162 is fitted to the outer ring 158b of the upper ball bearing 158.

With the configuration shown in FIG. 5, barrel barrel 100
The frictional state between the barrel and the main plate 160 and the frictional state between the barrel car 100 and the barrel holder 162 can be "rolling friction". Therefore, with this configuration, the barrel car 10
It is possible to realize a support structure of the barrel car 100 with further reduced frictional resistance and more durable performance when rotating at zero. Further, the occurrence of torque loss in the barrel car 100 can be reduced. Therefore, the number of windings of the mainspring does not decrease, and the duration of the timepiece can be sufficiently ensured. Therefore, the barrel car 100 of the present invention has very high performance. The square wheel 164 is assembled by fitting the square hole 164a into the square shaft portion 150a of the barrel wheel pin 150. The square wheel 164 is fixed to the barrel pin 150 and the barrel 102 by screwing the square hole screw 166 into the screw portion 102m of the barrel true 102.

When winding the mainspring 110, the winding mechanism 170 is operated to rotate the square wheel 164,
The barrel 102 is rotated. The barrel true 102 rotates with respect to the barrel lid 104 via the first ball bearing 130 and the barrel gear 1 via the second ball bearing 140.
Rotate with respect to 06. In the hand-wound timepiece, the winding mechanism 170 is composed of a winding stem, a pinwheel, a wheel, a round wheel, a transmission wheel, and the like. In the self-winding timepiece, the hoisting mechanism 170 is constituted by a rotary weight, a pawl lever, an idler, a switching transmission wheel, a ratchet wheel, and / or a transmission wheel. In the case of a hand-wound timepiece, there is no slipping attachment 112 as shown in FIG. Therefore, when the mainspring 110 is completely wound by the rotation of the barrel 102,
The barrel true 102 cannot rotate.

In the case of an automatic winding timepiece, the mainspring 110 is wound by rotating the barrel 102. Mainspring 110
Is completely wound up, the outer end 110b of the mainspring 110 urged by the slipping attachment 112 (not shown in FIG. 4) slides on the inner wall of the outer peripheral wall 106b of the barrel gear 106. The transmission wheel train 180 is rotated by the force of the mainspring 110. In the timepiece, a gear included in the transmission train and meshing with the barrel gear 160g is a second wheel. The rotation speed of the transmission wheel train 180 depends on the speed control mechanism 1
82 and the escape mechanism 184. In a timepiece, the speed control mechanism 182 and the escape mechanism 184 are a balance with a balance,
Includes ankle and escape wheel. The display member 186 is rotated by the rotation of the transmission wheel train 180, and displays information such as time, calendar, elapsed time, and measured values. In a timepiece, the display member 18
Reference numeral 6 denotes a second hand, a minute hand, an hour hand, a date indicator, a day indicator, and the like.

[0021]

As described above, the present invention adopts a configuration in which ball bearings are used in barrel barrels, and has the following effects. (1) Friction resistance of the rotating part is reduced, and the barrel can rotate efficiently. (2) The durability performance of the barrel car can be improved. Further, the occurrence of torque loss in the barrel car can be reduced. Therefore, the number of windings of the mainspring does not decrease, and the duration of the timepiece can be sufficiently ensured. (3) It is possible to realize a mechanical timepiece equipped with a high-performance barrel car having good durability performance.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a barrel car according to the present invention, in which a portion on the right side from a center line 101A in FIG. 1 shows a structure without a slipping attachment; The left part shows the structure with a slipping attachment.

FIG. 2 is a partially enlarged cross-sectional view showing a barrel true and parts in the vicinity thereof in the barrel barrel according to the embodiment of the present invention.

FIG. 3 is a partial sectional view showing a part of a timepiece supporting the barrel wheel of the present invention by a slide bearing, and is a center line 10 in FIG. 3;
A portion on the right side from 1A shows a structure without a slipping attachment, and a portion on the left side from the center line 101A in FIG. 3 shows a structure with a slipping attachment.

FIG. 4 is a schematic block diagram showing a timepiece equipped with a barrel car of the present invention.

5 is a partial cross-sectional view showing a part of a timepiece in which a barrel car of the present invention is supported by ball bearings, and a part on the right side from a center line 101A in FIG. 5 shows a structure without a slipping attachment; 5 center line 101A
The part on the left side from shows the structure with a slipping attachment.

FIG. 6 is a sectional view showing a conventional barrel car.

DESCRIPTION OF SYMBOLS 100 barrel car 102 barrel barrel 102a middle shaft part of barrel barrel 102c first inner ring mounting part of barrel barrel 102d second inner ring mounting part of barrel barrel 102e upper barrel part of barrel barrel 102f lower shaft part of barrel barrel 102m Screw portion 104 barrel lid 104c center hole of barrel lid 106 barrel gear 106b outer peripheral wall of barrel gear 106c center hole of barrel gear 110 spring 110a spring inner end 110b spring outer end 112 slipping attachment 130 first ball bearing 130a first inner ring 130b 1st outer ring 130c 1st ball 130d 1st retainer 140 2nd ball bearing 140a 2nd inner ring 140b 2nd outer ring 140c 2nd ball 140d 2nd retainer 150 barrel wheel pin 150a corner portion of barrel wheel pin 156 lower ball bearing 158 Upper ball bearing 160 Main plate 162 barrel holder 164 square hole wheel 164a square hole 166 square hole screw 170 hoisting mechanism 180 transmission gear train 182 speed regulating mechanism 184 escapement mechanism 186 display member 300 barrel car 302 barrel barrel true 304 barrel barrel cover 306 barrel barrel gear 310 Spring

Claims (8)

[Claims] 1. A barrel car for a machine driven by a mainspring, wherein the barrel car is disposed between a barrel barrel (102) and a barrel lid (104), and the barrel lid (104) is attached to the barrel barrel (102). A first ball bearing (130) for rotatably supporting the barrel gear (102) and the barrel gear (106), and the barrel gear (106) is mounted on the barrel barrel (10).
2) A barrel car comprising a second ball bearing (140) for rotatably supporting the barrel car. 2. A barrel car including a barrel true, barrel lid, barrel gear, and a mainspring, wherein a first ball bearing has an inner ring fixed to the barrel true (102) and an outer ring fixed to the barrel lid (104). A second ball bearing (140) having an inner ring fixed to the barrel true (102) and an outer ring fixed to the barrel gear (106); the barrel lid (104) and the barrel gear (104). 106), and is housed in the barrel end (10
And a mainspring (110) attached to (2) and having an outer end in contact with the barrel gear (106). 3. A barrel car for a device driven by a mainspring, comprising: a barrel barrel (10) having a first shaft portion, a second shaft portion, and a third shaft portion.
2); a first inner ring attached to a side closer to the first shaft portion of the barrel true (102); a first outer ring; and a part assembled between the first inner ring and the first outer ring. A first ball bearing (130) having a plurality of balls, a second inner ring attached to a side of the barrel true (102) closer to the second shaft portion, a second outer ring, and the second A second ball bearing (140) having a plurality of balls incorporated between an inner ring and the second outer ring; a barrel lid (104) attached to the first outer ring; and a barrel attached to the second outer ring. Barrel gear (106) mounted integrally with the barrel lid (104)
The barrel is housed in a space formed by the barrel lid (104) and the barrel gear (106).
2) is attached to the third shaft portion, and the outer end is the barrel gear (1).
The spring (11) in contact with the inner surface of the outer peripheral wall of (06)
0). 4. The barrel gear (106) is housed in a space formed by the barrel lid (104) and the barrel gear (106), the inner end of the barrel gear (102) is attached to the barrel end (102), and the outer end of the barrel gear (106). The mainspring (110) contacting or fixed to the inner surface of the outer peripheral wall is provided.
A barrel car according to any one of claims 3 to 3. 5. A barrel wheel pin (150) having a non-circular shaft portion for fitting with a square hole of a square wheel (164), and being attached to one shaft portion of the barrel true (102). The barrel car according to any one of claims 1 to 4, further comprising: 6. A barrel wheel (1) comprising: a barrel barrel (102);
The barrel car according to any one of claims 1 to 4, further comprising a non-circular shaft portion for fitting with the square hole of (64). 7. The barrel car (100) according to any one of claims 1 to 6, and a mainspring (110) housed in the barrel car (100).
A winding mechanism (170) for winding up a mainspring; and a mainspring (110) housed in the barrel car (100).
A transmission gear train (180) that rotates by the force of the above, a speed control mechanism (182) and an escape mechanism (184) for controlling the rotation speed of the transmission gear train (180), and the transmission gear train (180). A display member (186) that is rotated by the rotation of and displays information about time. 8. A barrel barrel (100) according to any one of claims 1 to 6, a ball bearing (156, 158) for rotatably supporting the barrel barrel (100), The mainspring (110) housed in the barrel car (100)
A winding mechanism (170) for winding up a mainspring; and a mainspring (110) housed in the barrel car (100).
A transmission gear train (180) that rotates by the force of the above, a speed control mechanism (182) and an escape mechanism (184) for controlling the rotation speed of the transmission gear train (180), and the transmission gear train (180). A display member (186) that is rotated by the rotation of and displays information about time.