JPH01280288A - Clock switching structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to realize a highly reliable and constant-cost switching section in a small watch for women, and relates to an improvement in the engaging section between the handle and the bolt. FIGS. 1 and 2 show plan views of conventional switching structures.

In FIG. 1, 1 is a winding stem serving as an external operating member;
2 is the oshidori, 3 is the bolt, 4 is the thread wheel, and 5 is the back presser. The shim 2 that engages with the winding stem 1 rotates around the 10# hole when the winding stem is pushed in and pulled out, and the rotational position at this time and the click force when pushing in and pulling out are determined by the shim pin 2b that comes out from the winding stem. This is determined by the click shape 5a of the back presser 5 that engages with the presser foot 5. At this time, the outer shape 2a of the bolt engages with the bolt 3, and the bolt rotates around the 40# hole according to the shape of the engaging portion of the bolt. The wheel 4 is engaged with the bolt, and slides around the winding stem 1 as the bolt rotates.

As described above, conventionally, in addition to the spring 3a for returning the bar, a back presser spring 5a is required to generate a click force, which is a factor in increasing the cost of manufacturing the back presser.

In addition, since the engaging part between the outer shape 2a of the oshidori and the bolt is relatively thin, the engagement may become disengaged, which can easily result in incorrect adjustment or switching of the watch. The unit cost of parts was high because the shearing surface of the engaging part of the lock and bolt had to be maintained to be of sufficient length. The click force when pushing in and pulling out the winding stem is also affected by the spring force of the bolt that engages with the oshidori, so the design of the click shape 5a of the back presser foot is quite delicate and difficult, and moreover, it is difficult to design the 10# hole of the oshidori and the oshidori. pin 2
b. Since the click force and switching timing change due to the positional error of the mandarin duck outline 2a, such a switching structure is extremely difficult and expensive to design and manufacture.

Furthermore, if the watch is miniaturized, the length of the back presser spring 5b for producing the click force cannot be made sufficiently long, which poses a problem in durability.

FIG. 2 shows a plan view of another conventional example. 1 is a winding stem which is an external operating member, 2 is a handle, 3 is a bolt, and 4 is a wheel. This is a type in which the click force when pulling out and pushing in the winding stem, and the amount of movement and positioning of the wheel wheel 4 are determined only by the shape of the engagement part between the outer shape 2a of the handle and the bolt 3. This is almost the same as the example in Figure 1. With the switching structure constructed in this way, the spring and click shape of the back presser as in the example shown in Fig. 1 are not required, but the engaging part between the oshidori outer shape 2a and the bolt has a small thickness, so that the engagement Similar to the previous conventional example, misalignment is likely to occur.

Furthermore, when a watch is downsized, the engaging part between the cockpit and the bolt becomes closer to the center of the watch, which interferes with the dial to which the minute and hour hands are attached, making it impossible to use this type of structural switching.

As described above, the conventional structure has various problems in terms of cost, quality, design, and miniaturization of the watch.

The present invention eliminates these drawbacks, and its purpose is to provide a switching structure which can significantly reduce costs and which is sufficiently reliable without particularly difficult management.

An embodiment of the entire movement that effectively utilizes the present invention is shown in FIGS. 3 to 8. This structure will be explained below.

FIGS. 3 and 4 are cross-sectional views thereof. This watch is a small women's watch with a very small movement, so the structure is divided into two stages to make effective use of the narrow space.

In FIG. 3, the upper left is the circuit section, the lower left is the switching section, the upper right is the battery section, and the lower right is the train wheel section.

Figure 4 is a diagram showing the switching section and its surroundings, and shows the winding stem 1.
15 and the oshidori 116, the oshidori presser 121 that presses down from above to prevent the engagement from coming off, and the oshidori pin 11
A bolt 118 is shown engaging 6a. Also, above the switching part is a circuit block, and crystal unit 1
24, a circuit board 122, and a battery positive terminal 125 are mounted on it.

FIG. 5 is a plan view of the gear train and its surroundings, FIG. 6 is a plan view of the switching and its surroundings, and FIG. 7 is a sectional view thereof. FIG. 8 is a plan view of the battery section and circuit section provided above the wheel train section and the switching section. In FIGS. 3 and 5, 101 is a main plate that is the base frame of the watch body, 102 is a rotor magnet 102a having two N-3 poles in the external direction, a rotor pinion 102b, and a seat 10.
The rotor consists of 2c. A stator 103 is made of a ferromagnetic material and has an inner notch and an outer notch.

Reference numeral 104 designates a coil block in which a substrate 106 is integrated, in which a coil is wound around the pole of a magnetic core 105 made of a ferromagnetic material, and both ends of the coil are connected to electrode patterns by soldering or the like. The rotor, stator, and coil block constitute a motor. This motor is MO3I shown in Figure 8.
The current flowing through the coil due to the output pulse applied by C107 generates a magnetomotive force, and the resulting magnetic flux saturates the outermost part formed from the outer notch of the stator and the header.
This is a step motor that magnetically rotates by attracting and repelling a rotor magnet by generating N-3 poles. Figure 3,
As shown in Figure 5, the rotor pinion is the fourth wheel & pinion 1 of the reduction gear train.
08, fifth wheel 109, fifth wheel 110, and minute wheel 111 are connected to transmit rotation to the well-known hour and minute hands. These gear trains are supported by stones and bushes on the main plate and the train gear bridge 112, and the gear train bridge is fixed to a bottle set on the main plate with screws 134 and 135. As shown in FIG. 5, 113 is a battery negative terminal, and 114 is a battery terminal insulator. The battery terminal insulator is fixed to the base plate by dowels 114a+ and 114b, and 114aa and 114C play two roles: fixing the battery negative terminal and insulating it from the base plate. The battery negative terminal is a contact 113 with spring properties.
Part a is pressed against the negative part of the battery to establish continuity, and part 113b, which also has spring properties, is in contact with the circuit pattern, and MO3
Minus human power is being applied to IC. The circuit board 122 shown in FIG. 8 has a copper foil pattern 123 formed on polyimide resin, which is an insulating material, and the pattern and MO3IC10? , crystal unit 124, etc. are connected. A portion 123a of the circuit pattern is pressed into contact with a portion 113b of the battery negative terminal for electrical conduction, and a portion 123b of the overhang contacts the crystal unit holding portion 125a of the battery positive terminal 125, so that the battery voltage is input to the MO3IC. Although not shown, MO3
The output lead pattern from the IC is connected to the coil 104 of the step motor, and a predetermined pulse signal is outputted to drive the motor. Circuit board 122, battery positive terminal is screw 1
36.137, it is fixed to a bin built on the main plate. One of the screws 136 also fixes the speed/speed switch lever 126 above the battery positive terminal. The adjustment switch lever 126 has an L-shaped bent end positioning part, which is connected to the battery positive terminal and the adjustment hole 1 of the circuit board.
When it is inserted and fixed in 27a or 127b, it is configured to be compressed with spring property to the logical adjustment pattern 123C or 123d of the circuit board. Also, when the adjustment switch lever is installed in the adjustment hole 127C of the battery positive terminal (
In the illustrated state), the circuit board has a notch and does not come into contact with the circuit pattern. If the adjustment switch lever is inserted into any adjustment hole 127a, 127b, 127c and fixed with a screw, the logical adjustment pattern 123c, 1
23d, the same pattern is grounded, and the speed is adjusted. When installed in 127C, there is no pattern, so pattern 123C is +0.264 seconds/based on this position.
If the circuit is configured to be able to speed up and slow down 123d by -0,264 seconds/day, it will be possible to speed up and down in three steps in total. As shown in FIGS. 3 and 6, the winding stem 115, which is an external operating member, is supported by a shaft portion 115a and a tenon portion 115b at the tip in a horizontal hole in the base plate.

The shifter 116 is rotatably supported around a shifter shaft 117 erected on the main plate, and is engaged with a concave portion 115c of the winding stem. Further, the pusher 116a engages with the click portion 118a of the bolt 118 and is positioned at two locations in this case according to the recessed portion of the click portion. Kannuki 11
Reference numeral 8 guides a wheel 119 which is crimped to the rear end by the force of the spring portion 118b and whose tip engages with the chamfered portion 115d of the winding stem. Then, the wheel is moved to the normal position and the reset position according to the position of the paddle. When the winding stem is pulled out, the bolt rotates until it comes into contact with the reset pin 132, and when the reset state is reached, the tooth tips 119a of the hexagonal wheel engage with the second gear and the time can be adjusted by turning the winding stem. In the case of this movement, due to its miniaturization, there is no regulating lever, so the movement of the wheel is transmitted to the rotor through the fifth wheel, fifth wheel, and fourth wheel.

These switching parts are covered with a pusher presser 121 via a pusher presser seat 120. The oshidori presser has a springy part 121C that extends across the winding stem to ensure sufficient spring length to the oshidori shaft. It is guided into a book bin and secured with a screw. In order to attach and detach the winding stem, pull out the winding stem to set it in the reset state, and remove the winding stem by pushing down the dowel pin 116a and lifting the engaging portion of the dowel with the winding stem, as shown in FIG.

At this time, as can be seen from FIG.
A gap is provided between 6a and the click part 118a of the bolt, so that even if there is a shape error in the handle, bolt, etc., the bolt will always hit the reset bin 132 shown in FIG.

Further, when the push pin is pushed down, it comes into contact with the bolt, and can be pushed down lightly without receiving the reaction force from the bolt spring 118b. By pushing the Shidori pin to attach and remove the winding stem in this way, the shape of the Shidori can be made extremely smaller compared to the conventional configuration in which a recess is made in the part of the Shidori other than the bottle and pushed with tweezers, etc. In addition, even if the distance between the oshidori and the movement surface is large, it can be made relatively easy to push down. In other words, a very suitable switching structure can be constructed for a micro-sized timepiece like this embodiment. Further, in this embodiment, the spring of the oshidori presser is extended in a direction substantially perpendicular to the winding stem from the side opposite to the oshidori. By arranging it in this manner, it is possible to ensure a sufficiently long spring for the oshidori presser even in a micro-compact watch. Further, the winding stem engaging portion of the winding stem and the winding stem pin are arranged approximately at right angles to the winding stem.

This makes it easier to attach and detach the winding stem by pushing the dowel pin. From the above, the push spring, push shaft, and push pin are arranged almost in a straight line, and are arranged in a direction substantially perpendicular to the winding stem.

The oshidori shaft and the oshidori pin, and the 40# hole that is the center of rotation of the oshidori pin and the bolt, were arranged at an angle of 70° to 130°. This makes it easy to set the click force when pushing in and pulling out the winding stem to approximately the same value, and also because the lock and bolt can be placed along the outer circumference of the watch, making it suitable for ultra-compact watches like this example. is the optimal configuration.

Further, in this embodiment, the stopper and bolt are used to forcibly prevent the wheel and pinion wheel from meshing in the first stage of the winding stem. As a result, the problem that occurs in the conventional example shown in Figs. 1 and 2, such as when the winding stem is dropped with the winding stem facing up, the impact causes the wheel 4 to hit the correction wheel 6 and cause the needle to jump does not occur. . When pulling out the winding stem, in the conventional example, the bolt was forcibly moved by the pusher, so the thread wheel 4 and the correction wheel 6 collided, resulting in chipping or deformation.

Therefore, the rolling wheels and correction wheels were made of iron, which was hardened by quenching. In this embodiment, the gear wheel 119 and center wheel 110 are configured to mesh with each other by a bolt spring. As a result, if the force of the locking spring is set to an appropriate value, the wheel and center wheel are not made of a highly hard material, so there will be no chipping or deformation of the tips of the teeth as described above, and the cost of materials, heat treatment, etc. will be reduced. be able to. During assembly, as can be seen from FIGS. 5 and 6, the train wheel bridge 112 was cut out so that the bolt spring 118b was positioned above the price plate. This is to enable the wheel train section and the switching section to be assembled independently, thereby improving ease of assembly and repair. In addition, the pin 133 of the bolt spring hook is configured as a two-stage bin, so that when the bolt spring is hooked, it is difficult to fall off due to the difference in level.

As described above, according to the present invention, the shape of the engaging portion of the latch with the oshidori is shaped to simultaneously determine the click function and the positioning function of the engaging member such as the wheel, and the engagement between the oshidori and the external operating member is The bolt position regulating means is provided so that there is a gap between the bolt and the bolt at the removal position, so when pushing down the bolt to remove the bolt and the external operating member, no reaction force from the bolt acts on the bolt. It can be pressed down lightly and has excellent workability. In addition, in the past, in order to overcome the reaction force from the bolt, the lever length of the oshidori was made longer, and the oshidori was made larger due to the provision of a special push-in groove, but with the present invention, the oshidori can be made smaller. This contributes to the miniaturization of the entire watch.

Furthermore, in the present invention, when the external operating member is in the time adjustment position, a gap is provided between the right door and the bolt, so that when the winding stem is pushed in after time adjustment, the engaging member such as the wheel It does not move to the gear train side, which solves problems such as incorrect time adjustment (second skipping) and gear damage. In the past, the lock and lock were always under pressure, so when pushing in the external operating member after adjusting the time, the protrusion on the click part of the lock would cause one end of the wheel to move toward the gear train, causing the time to be incorrectly adjusted and the gear to be damaged. However, the present invention has completely solved the conventional problems as described above.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a conventional example. FIG. 2 is a plan view showing another conventional example. FIG. 3, FIG. 4, and FIG. 7 are cross-sectional views showing one embodiment of the present invention. FIG. 5, FIG. 6, and FIG. 8 are plan views thereof. 101... Main plate 110... Second wheel 112... Gear train bridge 115... Winding stem 116... Oshidori 118... ...Kanuki 121...Oshidori presser foot 128...Battery or more

Claims (2)

[Claims] (1) Consisting of an external operating member, a handle that engages with the handle, a bolt that engages with the handle, and an engagement member that engages with the bolt and moves on the axis of the external handler along with the movement of the bolt, and The shape of the engagement portion of the bolt with the Oshidori is configured to simultaneously determine the click and the position of the engagement member when the external operation member is pushed in and pulled out, A switching structure for a timepiece, characterized in that the position is regulated by a position regulating means so that a gap is formed between the cockpit and the bolt at a position where the external operating member is disengaged. (2) Consisting of an external operating member, a handle that engages with the handle, a bolt that engages with the handle, and an engagement member that engages with the bolt and moves on the shaft of the external handler along with the movement of the bolt; The shape of the engaging portion of the bolt with the rear end is configured to simultaneously determine the click and the position of the engaging member when the external operating member is pushed in and pulled out, and 1. A switching structure for a timepiece, characterized in that the position is regulated by a position regulating means so that a gap is formed between the rear door and the bolt when the lever is in a time adjustment position.