JPS63175793A - Timepiece package structure - Google Patents

Abstract

PURPOSE:To simplify the structure of a timepiece, to reduce the cost of manufacture, and to stabilize the quality by connecting circuit wiring of a conductor directly to a base plate made of plastic which is the base of a timepiece, and joining elements on the circuit wiring. CONSTITUTION:An integrated circuit (IC) 3 is mounted by soldering on the circuit wiring 2 of the conductor laid on the plastic base plate 1 and connected electrically to the circuit wiring 2, the base plate 1 and integrated circuit 3 are reinforced and fixed, and the lead wire 8 of a crystal unit 7 and the circuit wiring 2 are mounted 4 by soldering. In this case, a copper lined substrate 13 in conventional structure is eliminated and the circuit wiring 2 of the conductor is laid on the plastic base plate 1 to solder the lead wire 8 linearly; while the crystal unit 7 is put close the reverse side 14 of a timepiece movement 14. Consequently, the thickness H of the conventional timepiece movement can be reduced by DELTAh, the manufacture cost is reduced, and the quality is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a timepiece mounting structure for electrical circuit wiring and element mounting used in watches, electronic devices, and various mechatronic products.

[Summary of the invention]

By combining and integrating watch functions and applying materials and manufacturing,
Reducing the number of parts, material costs, and processing costs.

This watch mounting structure shortens manufacturing schedules, logistics processes, and simplifies inventory management, while also satisfying customers with its lightweight, compact, and low-priced products.

[Conventional technology]

The main plate that forms the basis of conventional clock functions, the electrical oscillation frequency divided by 1, and the circuit that handles the drive signal are single components that each have their own unique functions, and the main plate can be switched.

It functions as a base for stacking one display column, one power source holding circuit, and each drive mechanism, and the circuits are formed by pattern-molding the copper-clad portion of a copper-clad N substrate, copper-clad polyimide, or copper-clad phenol substrate. It is generally known to mount elements and function as an electronic circuit for driving a watch, and to use these two components in a stacked manner.

[Problem that the invention seeks to solve]

Conventional watches have also combined and integrated functions to date, but the combination and integration has been carried out for each mechanism of the watch. The invention of FIG.
The mechanisms of the conventional mechanical part 1 and electronics part 13 shown in the figure are integrated into one part 1 as shown in Fig. 1, and the number of parts of the conventional watch is reduced.

The objective is to solve problems such as material costs, processing costs, manufacturing schedules, logistics processes, inventory management, lightness, thinness, and shortness of products, and cost limitations.

Means for Solving Problem C] In order to solve the above problems, this invention uses recent engineering plastics, the first of which is to replace the board part of various conventional copper-clad circuit boards with plastic base plates. It has made it possible to apply high-performance resins such as , and it has also made it possible to combine injection molding with technology that prints copper foil circuit wiring at the same time.

There is also a method using conventional techniques such as printing, masking electrodeposition, soldering, and laying circuit wiring on the injection molded product in a post-process. Are these alternative materials? j! Three-dimensional circuit wiring and element mounting structures have been made possible by applying synthetic molding technology or conventional technology. The second point is how to connect the drive output of the circuit to the input of the drive mechanism (electromagnetic block) that converts it into mechanical rotational motion, but by integrating and compounding the functions of the electromagnetic block's coil lead board and the coil frame. The drive output can be input from the circuit wiring surface of the ground plane using a conductor zebra. In addition, the third point is that it has a ripple effect as a means of reducing components such as power supplies and switching, which are other mechanisms, and simplifying the structure.

(Function) If the clock structure configured as described above is used, automation,
It contributes to the realization of labor saving and factory automation, and allows us to continue to provide customers with low cost, short lead times, high reliability, light, thin, and small products, and low-priced products.

〔Example〕

Embodiments of the present invention will be described below based on cross-sectional views of a timepiece movement. FIG. 1(a) is a cross-sectional view of a watch movement according to the present invention, in which conductive circuit wiring 2 is laid on a plastic base plate 1, an integrated circuit (IC) 3 is soldered 4, and electrically connected to the circuit wiring 2. Make the connection and insert the base plate hole 5.
Adhesive 6 is injected into the plastic base plate 1 and the integrated circuit 3 are reinforced and fixed, and the lead wire 8 of the crystal unit 7 and the circuit wiring 2 are soldered and mounted 4. The output of the integrated circuit 3 is in a state where the circuit wiring 2 and the lead pattern 11 of the coil frame 10 of the electromagnetic block 9 are electrically connected by the zebra conduction plate 12.

The copper-clad substrate 13 in the conventional structure shown in FIG. 2 is removed, and the conductive circuit wiring 2 is laid on the plastic base plate 1 as shown in FIG. 7 is placed on the back side 14 of the clock movement, and the lead wire 8 is soldered 4 in a straight line, making it possible to reduce the thickness H of the conventional clock movement by Δh. Figure 1Cb) is
This is a sectional view of the timepiece movement of the present invention, in which the anode 16 and cathode 17 of a battery 15, which is a power supply mechanism, are connected by flexion contact to the circuit arrangement 2 of the conductor on the plastic base plate 1 to supply power to the electronic circuit. Battery positive terminal (anode plate) 18. with the conventional structure shown in Figure 3. By removing the battery negative terminal 19 and laying conductor circuit wiring on the plastic base plate 1, the battery 15 can be placed closer to the back side 14 of the clock movement, unlike the conventional clock movement. The thickness H of can be reduced by Δh.

〔Effect of the invention〕

As explained above, this invention is based on the idea of integrating and compounding the functions of the mechanical and electronic parts, simplifying the structure of conventional watches and reducing manufacturing costs.

Shortening the schedule 1. Stabilizing the quality and demonstrating the effects of highly reliable manufacturing.
In addition, it meets the needs of users by being light, thin, short, and small, making it possible to continue providing customers with good products at low prices.

[Brief explanation of the drawing]

Figures 1(a) and 1(b1) are cross-sectional views of the watch movement of the present invention, Figure 2 is a cross-sectional view of a conventional watch movement, and Figure 3 is a cross-sectional view of a conventional watch movement. ... Plastic base plate 2 ... Conductor circuit wiring 3 ... Integrated circuit (IC) 4 ... Solder mounting 5 ... Ground plate hole 6 ... Adhesive 7 ... Crystal unit 8 ・ ・ ・ ・ Lead wire 9 ... Electromagnetic block 10 ... Coil frame 11 ... Lead pattern of coil frame 12 ... Zebra conductor 13 ... Copper-clad board 14 ...Back side of the clock movement 15...Battery 16...Anode 17...Cathode 18...Battery positive terminal 19...Battery negative terminal H1Δh...Thickness of the clock movement Applicant: Seiko Electronic Industries Co., Ltd. Agent Patent Attorney Tsutomu Mogami (and one other person) Perspective drawing of the nail muffler (Fig. 1(b)) Follow side (Fig. 2) (Fig. 2) Fig. 3 (Fig. 3)

Claims (5)

[Claims] (1) A watch mounting structure characterized by directly connecting conductive circuit wiring to a plastic base plate that serves as the base of the watch, and bonding elements onto the circuit wiring. (2) The conductive circuit wiring is directly connected to the plastic base plate by printing within injection molding, printing, masking electrodeposition, or electrodeposition. The clock mounting structure described. (3) The timepiece mounting structure according to claim 1, wherein the circuit wiring is laid on uneven parts such as a flat surface, an inclined surface, a curved surface, a side surface, and a vertical surface of the main board. (4) Mounting for joining elements on circuit wiring includes fixing and electrical connection by solder pressure welding, welding, press-fit crimping, curing with various conductive and non-conductive paints, frequency adhesive, etc.
Alternatively, the timepiece mounting structure according to claim 1, characterized in that a plastic base plate is used to connect the terminals of fixed elements and circuit wiring with conductor wires. (5) The timepiece mounting structure according to claim 1, wherein the circuit wiring is exposed or buried or semi-exposed from the surface of the plastic base plate.