JPS632351B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the wheel train structure of a small timepiece. As quartz watches have become thinner and more dressy, the movement has been designed so that the winding stem is closer to the dial and the switch is placed on the front side to make the watch look thinner.

Therefore, by changing the front layout of the watch, it is possible to make the watch smaller and thinner.

An object of the present invention is to provide a layout that allows watches to be made smaller and thinner.

The gear train structure of a small timepiece according to the present invention has a main plate on which a pusher, a bolt, and a back presser that are interlocked with the winding stem are arranged on the train wheel receiver side, and a second axle is set up between the train gear receiver and the main plate. a second wheel bridge located at and held by the main plate; a switching gear train consisting of a small iron car, a Hinura intermediate car, and a Hinura wheel, disposed between the main plate and the second wheel; a train wheel bridge screwed together with a fixing portion of the second bridge to the foot of the main plate; a second wheel, a third wheel, and a fourth wheel disposed between the main plate and the train bridge; It has a time display wheel train consisting of a fifth wheel, and a regulating lever that forms a rigid body part, a driving part, a reset part, a regulating part, and a spring part, and adjusts by bringing the regulating part into contact with the fifth wheel. The switching wheel train and the time display wheel train are disposed so as to overlap in plan within the outer shape of the second bridge, and the day wheel and the third wheel are arranged in a clearance hole and a gap in the second bridge. The regulating lever has a spring portion and a part of the rigid body portion disposed between the second bridge and the gear train bridge. It is characterized in that it is positioned in the thickness direction and held at a position that overlaps the switching gear train in a plane. The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a plan view of the present invention. Figures 2 and 3
4 are sectional views of the main parts of the present invention.

1 is a main plate, 2 is a battery that supplies electrical energy, and 3 is a winding stem loosely fitted into the main plate 1. The winding stem 3 is positioned by a pusher 4 and a back presser 6 in a normal carrying state, a Sunday correction state, and a needle alignment state. The pusher 4, the bolt 5, and the back presser foot 6 are arranged on the gear train receiving side of the main plate 1. Oshidori 4 is the groove 3a of the winding stem
The dowel 4a is engaged with the back presser click portion 6a. The clutch wheel 7 is loosely fitted to the winding stem 3, and is normally in the state shown by the solid line in FIG. 1 in the carrying state.
In the Sunday correction state where the winding stem 3 is pulled out one step, the wheel 7 moves to the winding stem groove 3a side and becomes the state shown by the dashed-dotted line in Figures 1 and 3, and when the winding stem 3 is pulled out further, , moves to the second wheel side (center of the watch), becomes in the state shown by the two-dot chain line in FIG. 3, and transmits the rotational force for setting the hands to the small iron wheel 13. The center wheel 8 is frictionally engaged with a second gear 8a and a second pinion 8b, and has an appropriate needle turning torque when turning the needle. The center wheel 8 protrudes into a second pinion relief hole 1a formed in the center of the main plate, and is guided by a second axle shaft 10 planted in the center bridge 9.

The second axle 10 has a driving diameter as large as possible to prevent bending, and has a flange portion 10a.

The small iron wheel 13 is loosely fitted onto the pin 1b cut out on the main plate 1, meshes with the stopper wheel 7 when the needles of the winding stem 3 are aligned, and is held down by the second bridge 9. Nibanuke 9
A tooth relief plate 9a of the small iron car 13 is provided on the side. The reverse intermediate gear 12 has a reverse intermediate gear 12a and a reverse intermediate pinion 12b fixed by caulking.
It is pivoted with proper play and backlash by the handle frame 35 driven into the main plate 1 and the second bridge 9. The reverse intermediate gear 12a meshes with the small iron wheel 13.

The sun gear 11 is the sun gear 11a, and the sun gear 11 is the sun gear 11a.
It consists of three bodies, 1b and 11c, each of which is attached to the other side. The hour wheel 11 passes through an escape hole 9b made in the second bridge 9. The hour wheel 11 is pivotally supported by a handle frame 15 driven into the base plate 1 and a handle frame 33 driven into the gear train bridge 18.

In order to make the side cut in the 3-9H direction of the clock as small as possible, a layout was adopted in which the small iron wheel 13 was brought closer to the second wheel 8, so that the small iron wheel 13 and the hour gear 11a could be stacked on top of each other despite the thinness of the watch. The cross-sectional layout of Hinuraguruma 11 has been decided.

The diameter of the lower handle side (the driving side of the hidden pinion 11c) of the hidden pinion 11b is made larger than the outer diameter of the hidden pincushion 11c to prevent lubricating oil from flowing to the hidden pincushion 11c. . The rear gear 11a is directly meshed with the middle pinion 12b and the second pinion 8b.

The third wheel 14 is the third gear 14a and the third pinion 14b.
are fixed to each other, and are pivotally supported by a hole stone driven into the main plate 1 and the gear train bridge 18. As described above, by bringing the small iron wheel 13 closer to the center of the watch, the minute wheel 11 also approaches, and the third gear 14a overlaps the small iron wheel 13 and the minute wheel 11a in a plane. The third wheel & pinion 14 passes through a third wheel escape hole 9c made in the second wheel bridge 9. The plane clearance between the third pinion 14b and the second pinion holder 9c is made appropriate to prevent the third wheel & pinion 14 from falling down and improve the handle standability. The fourth wheel 15 has a fourth gear 15a and a fourth pinion 15b fixed to it, and a lower handle and a gear train are inserted into a hole 10b made in the center of the second axle 10 set in the second bridge 9. Uke 18
The upper handle is supported by a hole stone driven into the shaft.

The fifth wheel 16 is the fifth gear 16a and the fifth pinion 16b.
is fixed to the main plate 1 and the gear train bridge 18, and is pivotally supported by a hole stone driven into the main plate 1 and the gear train bridge 18. The second bridge 9 has a notch 9d that guides the fifth wheel & pinion 16 in the plane direction.
have. The fifth gear 16a is the reverse gear 11
It overlaps with a two-dimensionally. Second receiver 9 is Kotetsu car 1
3. The switching gear train of the middle wheel 12, the second wheel 11, the second wheel 8, the third wheel 14, the fourth wheel 15, and the fifth wheel 16, and the fifth wheel 16. They are arranged with two-dimensional overlap within the outer shape. The rotor 17 includes a rotor pinion 17a and a rotor magnet piece 17.
b and the rotor magnet bush 17c are fixed to each other. The rotor magnet piece 17b is an anisotropic magnet made of samarium cobalt or the like. Rotor 17
is pivotally supported by a hole stone driven into the main plate 1 and the gear train bridge 18, and a gap is created between the hole stone and the rotor pinion 17a in both the upper and lower directions due to the magnetic force in the cross-sectional direction with the stator 19. It has been adjusted.

As described above, the second bridge 9 firmly supports the second axle 10 for guiding the second wheel & pinion 8, and positions the switching wheel train small iron car 13 and the intermediate wheel 12.

As shown in FIG.
It is fixed by three pieces.

Therefore, the second bridge 9 is fixed at two places, and the gear train bridge 18 is fixed at three locations, thereby eliminating the need for a fixing screw for the second bridge and achieving a thinner structure.

The second bridge 9 supports a second axle 10 on one side and a switching wheel train on the other side with the fixed portion of the second bridge as a boundary.

The train wheel bridge 18 has a time display, the second wheel & pinion 8, and the third wheel & pinion 1.
4, fourth wheel & pinion 15, fifth wheel & pinion 16, and rotor 17
It is directly supported between two fixed parts, and the sun wheel 11 and third wheel 14 are directly supported between the other fixed parts.

The stator 19 has a well-known integral stator shape, ensuring an appropriate clearance in a plane with the rotor magnet pieces 17b.

Further, in order to reduce the thickness, the contact portion with the magnetic core 20 is pressed. Planarly, it is guided by a circuit receiving screw pin 22 and a battery positive terminal screw pin 23 that are set on the base plate 1. The magnetic core 20 supports a coil lead board 24 that contacts the circuit block, and is connected to a fixing screw 25 via the battery positive terminal 21.
Fixed by

The circuit receiving screw pin 22 side directly connects the circuit board 31 constituting the circuit block 26 and the coil lead board 24, and is fixed with a fixing screw 28. The regulation lever 27 includes a rigid body part 27e that engages with the regulation lever shaft 29 as a rotation center, a drive part 27a that engages with the dowel 4a of the rear wheel 4, a regulation part 27c that regulates the fifth wheel & pinion 16, and a spring 27 that generates regulation torque.
b. Reset section 27d that resets the circuit
has. The driving part 27a of the regulation lever 27 rides on the back presser click part 6a, and the spring part 27b and a part of the rigid body part 27e are arranged between the second bridge and the gear train bridge, and are positioned in the thickness direction to switch the gear train. It rests directly on the second bridge 9 at a position where it overlaps with the second bridge 9 in a plane.
Positioning in the thickness direction is performed by the gear train bridge 18 and the circuit bridge 30. The engaging portion 27a of the dowel 4a of the dowel 4 is bent downward. The rigid portion of the regulating lever 27 is located above the wheel 7 and also serves to prevent the wheel 7 from falling in the cross-sectional direction.

As shown in FIG. 4, the regulating portion 27c of the regulating lever 27 is Z-bent to ensure the amount of meshing with the fifth gear 16a in the cross-sectional direction, so that regulation can work reliably. The regulation lever reset portion 27d comes into contact with a reset pin 32 fixed to the rotating board 31. In order to ensure the amount of cross-sectional engagement, the reset portion 2
7d is L-bended. To prevent extreme downward warping of the regulating portion 27c of the regulating lever 27,
It is regulated by the stator 19. The regulation lever reset portion 27d projects into the notch 30a of the circuit receiver 30.

Next, the operation will be explained. The magnetomotive force generated by the coil block in the normal portable state is transmitted from the magnetic core 20 to the stator 19, and rotates the rotor 17.

The rotor 17 is driven to the fifth wheel & pinion 16, the fourth wheel & pinion 15, the third wheel & pinion 14, and the second wheel & pinion 8 to display the time.

When the winding stem 3 is pulled out one step, the stopper wheel 7 is brought into the Sunday correction state by the bolt 5 as shown by the dashed line in FIGS. 1 and 3. The regulation lever 27 is normally kept in the portable state and does not operate. When you pull out the winding stem 3 further,
Figure 3: The needle is aligned with the two-dot chain line, and the sewing wheel 7
moves in the second wheel 8 direction and meshes with the small iron wheel 13.

The regulation lever 27 is rotated counterclockwise by the dowel 4a of the rear door 4 with the regulation lever shaft 29 as the rotation center. Reset part 27d due to rotation
When the reset pin 32 is rotated further, the regulating portion 27c and the fifth gear 16a are brought into contact with each other, and when the rotation operation is completed, the reset portion and the regulating portion are stabilized with a certain amount of contact pressure. The rotation of the winding stem 3 is controlled by the gear train 7 (small iron wheel 13, intermediate wheel 1).
2. It is transmitted to the time display wheel train via the hour wheel 11).

When the winding stem 3 is pushed in, the handwheel 7 and the regulation lever 27 return to their normal carrying state and return to time display operation.

As explained above, in the present invention, the shift gear train, the bolt, and the back presser are arranged on the gear train side of the main plate, making it easy to assemble. By arranging them in an overlapping manner, it is possible to bring the small train closer to the second wheel in the center of the clock.
Since the hour direction can be made smaller, the watch can be made smaller and dressier.

In addition, the third wheel passes through and is guided through the escape hole of the second bridge with an appropriate clearance, which prevents it from falling during assembly, improves handle standability, and improves the ease of assembling the wheel train section and after-sales service. Is possible.

Furthermore, by screwing the fixing portion of the second bridge to the main plate via the gear train bridge, there is no need for a screw for fixing the second bridge, allowing the watch to be made thinner.

Furthermore, a part of the rigid body part and the spring part of the regulation lever are arranged between the second bridge and the gear train bridge, and are positioned in the thickness direction so that they are held in a position that overlaps the switching gear train in a plane. The cross-sectional position of the regulating part that regulates the number wheel is also kept constant, and the length of the regulating part can be secured even in a small space, so reliable and stable regulation is possible. This has the great effect of preventing it from falling.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention. FIG. 2 is a sectional view of an embodiment of the present invention. FIG. 3 is a sectional view of an embodiment of the present invention. FIG. 4 is a sectional view of an embodiment of the present invention. 1... Main plate, 2... Battery, 3... Winding stem, 4...
Oshidori, 5...Kanuki, 6...Ura presser, 7...
...Tsuzumi wheel, 8...Second wheel, 9...Second wheel, 10
...Second axle, 11...His back wheel, 12...His back intermediate wheel, 13...Small iron wheel, 14...Third wheel, 1
5... Fourth wheel, 16... Fifth wheel, 18... Gear train bridge, 19... Stator, 20... Magnetic core, 27...
Regulation lever, 29... Regulation lever shaft, 30... Circuit receiver.

Claims (1)

[Claims] 1. A main plate on which the shim, bolt, and back presser that interlock with the winding stem are placed on the gear train receiver side, and a second axle is planted and held on the main plate at an intermediate position between the gear train receiver and the main plate. A second bridge, a switching gear train consisting of a small iron train, a middle wheel, and a sun wheel arranged between the main plate and the second bridge, and the second bridge located on the foot of the main plate. a gear train bridge that is screwed together with the fixing part;
A time display wheel train including a second wheel, a third wheel, a fourth wheel, and a fifth wheel disposed between the main plate and the train wheel bridge, a rigid body part, a driving part, a reset part, and a regulating part. ,
a regulating lever forming a spring portion and regulating the fifth wheel by contacting the regulating portion with the fifth wheel; The second wheel and the third wheel are guided through the escape hole of the second bridge with a clearance and are supported by the main plate and the gear train bridge, A portion of the spring portion and the rigid body portion are disposed between the second bridge and the gear train bridge, are positioned in the thickness direction, and are held at a position that overlaps the switching gear train in a plane. The gear train structure of a small watch.