JPS6237188Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a circuit switch structure for an electronic timepiece, which has a switch member that selectively contacts and conducts a pattern provided in the circuit of an electronic timepiece to determine the logical state of the circuit, and is suitable for example for a logic adjustment device. It is something.

Traditionally, trimmer capacitors have been commonly used in the timing structure of electronic watches, but trimmer capacitors are relatively large, which is disadvantageous for small and thin watches in terms of space, and due to the influence of humidity etc. Because of the drawbacks such as causing deviations, the so-called logical adjustment method has begun to be adopted, in which the frequency division ratio of the frequency divider circuit is changed to adjust the speed. For example, by selectively positive grounding, the daily difference is 0.53
The speed is slowed down in several steps in seconds, and such a structure is known as a rotary switch structure, such as in Japanese Patent Laid-Open No. 155869/1983. However, with this type of switch structure, there is a large space for the switch lever with two arms to rotate, a large space for the wiring pattern around the shaft, a large space for the switch lever to rotate freely, and a large space for the switch lever to rotate freely. The arm of the clock must be aligned with the direction of the slot on the head of the speed/speed switch shaft, and it must be installed in a position that matches the speed/speed mark that indicates the speed/speed amount, which takes time to assemble, etc., making the watch more compact and reducing costs. There were many advantages and disadvantages.

The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a circuit switch structure suitable for the logic speed control structure of small and thin watches, especially women's watches.

The circuit switch structure of the electronic watch according to the present invention is as follows:
A circuit board 3 having a plurality of logical slowing/fastening patterns 3a, 3b formed on one side of an electronic insulating substrate body 3c in a peripheral part, and a plurality of logical slowing/fastening patterns 3a, 3b formed on one side of an electronic insulating substrate body 3c, and a plurality of logical slowing patterns 3a, 3b arranged on the circuit board and formed in a peripheral part thereof. A plurality of notches 11a and 11b are provided at positions facing each of the logical adjustment patterns, and a notch part 11c is provided at a position where the logical adjustment patterns are not arranged, and the circuit board is fixed to the base plate 4 together with the circuit board. a circuit holding plate 11, a gear train bridge 14 that engages with a foot 5b planted on the base plate, and a gear train bridge 14 that is arranged to overlap the gear train bridge and is locked together with the gear train bridge to the foot. Fixed part 12
and a positioning portion 12a whose tip portion is bent into an L-shape, whose tip portion is inserted into the notch portion of the circuit holding plate to restrict rotation, and which presses into contact with the logical slowing/fastening patterns 3a and 3b of the circuit board. It is characterized by having a speed/speed switch lever 12 provided therein.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In the plan view of FIG. 1 and FIG. 2, which is a sectional view thereof, the circuit board 3 on which the IC chip 1, crystal resonator 2, etc. are mounted is composed of an electrically insulating substrate body 3c having an electrically conductive pattern on one side, and is electrically insulated. The substrate body 3C has openings 3d, 3e, 3f and 3
d, 3e, logical slow/slow patterns 3a, 3b are wired. The base plate 4 has legs 5a, 5b, 5c.
etc. are planted on the support leg 5a, a circuit seat 6 made of an insulating material, a stator 7, a coil 8, a magnetic core 10 having a coil lead board 9, the circuit board 3,
A circuit holding plate 11 is assembled and fixed with screws 13. The circuit holding plate 11 has cutout portions 1 for adjusting speed corresponding to the openings 3d, 3e, and 3f of the circuit board.
1a, 11b, and 11c are provided. The gear train holder 14 and the adjustment switch lever 12 are attached to the foot 5b with the screw 1.
It is fixed at 5. The train wheel bridge 14 supports a rotor 16 and a train wheel 17 that decelerates the rotation of the rotor and transmits it to a pointer (not shown). The speed/speed switch lever 12 has an L-bent positioning part 12a and a fixed part 12b with a lower step, and the entire body is substantially rigid. When inserted and fixed,
The logical speed/speed pattern 3a or 3b of the circuit board is bent by the tip of the speed/speed switch lever and is compressed by the elasticity of the circuit board. Further, when the speed/speed switch lever 12 is assembled into the notch 11c of the circuit holding plate, the circuit board is completely opened 3f, so that it does not come into contact with the circuit board.

One embodiment of the present invention has the above-described structure, so that by inserting the speed/speed switch lever 12 into any of the speed/speed notches 11a, 11b, 11c of the circuit holding plate 11 and fixing it with screws, a logical speed/speed pattern can be created. 3
The same pattern is grounded by contacting a and 3b, and is speeded up and down. Since there is no pattern when it is assembled into the notch 11c, pattern 3a is created using this position as a reference.
For example, if the circuit is constructed so that it can logically adjust speed by -0.52 seconds/day and 3b by +0.52 seconds/day, the speed can be adjusted in three steps in total. Here, on the back side of the logic adjustment parts 3a and 3b of the circuit board, the thickness of the stator 7, the magnetic core 10, the coil lead board 9,
A space is provided by utilizing the shape, and the flexibility of the flexible circuit board is effectively utilized to obtain stable electrical continuity with the speed/speed switch lever 12. The gear train bridge 14 serves as a fixing member for the speed/speed switch lever.
Since the fixing screw 15 is also used as the fixing screw 15 of the watch body, it can be fixed independently without increasing the thickness of the watch body, compared to the case where the screw 13 of the circuit holding plate 11, which has a large part bulk and is placed at the top of the watch body, is used for fixing. Since it is not a screw, the number of parts does not increase. In addition, the area near the fixing screw of the circuit holding plate has a high wiring density as there are conduction patterns from the IC, such as connection patterns to the coil, but multiple patterns are wired nearby with the receiving screw 15 as the center of rotation of the adjustment switch lever. As a result, the circuit pattern does not become overcrowded, making wiring easier and improving the reliability of the circuit.

FIG. 3 shows a second embodiment of the present invention, in which a speed/speed switch lever is attached to a logical speed/speed pattern 3a overhanging an opening 3d of an electrically insulating substrate 3c of a circuit board 3, using the opening 3d as a positioning part. 12 L-bent portions 12a are assembled and fixed with fixing screws 15 of the gear train bridge 14. The speed/speed switch lever 12 has a spring property and is given an amount of deflection so that it can be crimped to the pattern 3a and electrical continuity can be obtained.

The second embodiment of the present invention has the above-mentioned structure, and differs greatly from the first embodiment in that the circuit board and the switch lever are deflected differently. However, since the speed/speed switch lever is fixed by the gear train receiver screw, it has the same effect as the first embodiment.

As described above, the present invention provides a circuit holding plate that is disposed overlappingly on a circuit board having a plurality of logic regulation patterns on its periphery and is secured to a base plate at a position opposite to the plurality of logic regulation patterns of the circuit. and a notch at a position where there is no logical speed/speed pattern, and in this notch, bend the tip of the speed/speed switch lever, which is arranged over the gear train bridge and is locked to the main plate together with the gear train bridge, into an L-shape. By configuring the formed positioning portion to be selectively pressed into contact with the logical slowing/fastening pattern of the circuit board, slowing/fastening adjustment can be performed in three steps, and
The positioning part of the speed/speed switch lever bends the circuit board through the notch of the circuit holding plate and presses against the logical speed/speed pattern, and its rotation is restricted by the notch of the circuit holding plate to ensure stable electrical continuity. can be measured.

In addition, since the speed/speed switch lever is stacked on the gear train bridge and locked to the main plate with minimal overlapping parts, there is no need to increase the thickness of the watch body, and by sharing screws, it is possible to reduce the thickness of the watch without increasing the number of parts. Since it can reduce costs, it is suitable for small, thin, and low-cost watches such as women's watches, and its practical effects are great. It has a great practical effect on watch bodies that are compact, thin, and low-cost, such as women's watches.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a first embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a sectional view showing a second embodiment of the present invention. 3...Circuit board, 3a, 3b...Logical slowing pattern, 3c...Electric insulating board body of circuit board, 11
...Circuit holding plate, 11a, 11b, 11c...Regulation/acceleration notch, 12...Adjustment/acceleration switch lever, 1
4... Gear train receiver.

Claims (1)

[Scope of utility model registration request] A circuit board 3 having a plurality of logical slowing/fastening patterns 3a, 3b formed on one side of an electronic insulating substrate body 3c in a peripheral part, and a plurality of logical slowing/fastening patterns 3a, 3b formed on one side of an electronic insulating substrate body 3c, and a plurality of logical slowing patterns 3a, 3b arranged on the circuit board and formed in a peripheral part thereof. A plurality of notches 11a and 11b are provided at positions facing each of the logical adjustment patterns, and a notch part 11c is provided at a position where the logical adjustment patterns are not arranged, and the circuit board is fixed to the base plate 4 together with the circuit board. a circuit holding plate 11, a gear train bridge 14 that engages with a foot 5b planted on the base plate, and a gear train bridge 14 that is arranged to overlap the gear train bridge and is locked together with the gear train bridge to the foot. Fixed part 1
2b and a tip thereof are bent into an L-shape, the tip thereof is inserted into the notch of the circuit holding plate to restrict rotation, and a positioning portion 12a is pressed against the logical slowing/fastening patterns 3a, 3b of the circuit board. A circuit switch structure for an electronic timepiece, characterized in that it has a speed/speed switch lever 12 provided therein.