JPS6059556B2 - Electronic hour clock contact switching device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a contact switching device for an electronic clock.

Generally, in electronic gin-dachi clocks, the number of gin-dachi sounds is determined mechanically, or by mechanically switching the electric circuit.

Therefore, the mechanism, such as the combination of cams and levers, becomes complicated and costs increase. Furthermore, in the past, there were electronic clocks that simply switched whether or not to generate a ticking sound, but it was difficult to satisfy the functions of a clock with this alone.

In view of this fact, the contact switching device for an electronic clock of the present invention has functions such as time setting, continuous striking, skipping, and stopping, and switching of the volume of the ticking sound configured on a single printed board. It is also an attempt to simplify the management of manufacturing, etc. and reduce manufacturing costs. Hereinafter, the present invention will be explained based on the drawings.

Fig. 1 is a perspective view showing one embodiment of the contact switching device of the electronic ginko timepiece of the present invention, Fig. 2 is a vertical sectional view of the knob portion and the contact switching unit, Fig. 3 is a horizontal sectional view thereof, and Fig. 4 5 and 6 are exploded perspective views, and FIG. 7 is a plan view of the function switching and volume switching lands of the printed board.

In the figure, A is a printed board, and a circuit network 1 is formed by etching the copper surface of a copper laminated board, and an electronic circuit 3 is constructed by equipping it with an electronic section 2.

Then, a function switching land 4 is connected to the gindaku sound performance switching circuit and the volume switching circuit of the electronic gindaku circuit 3, respectively.
and a sound volume switching land 5 are independently arranged and formed. Here, the function switching land and the volume switching land 5 are formed side by side in, for example, an annular shape.

6 is a support hole formed at the center of these lands, 7 is a guide hole, and 8 is an inner contact point formed by punching a thin metal plate with good conductivity into a substantially concave U-shape, with both wing pieces slanting downward. The inner contacts 8a, 8a are attached to the tip of the locking hole 8.
b and a central hole 8c.

Reference numeral 9 denotes an outer contact plate, which is formed by punching a thin metal plate with good conductivity into an annular shape, with both wing pieces protruding from the outer periphery of the plate and curved downwardly, with an outer contact 9a at the tip. , 9a are attached.

Also, from the middle part of the outer contact plate 9, there is a pressing contact 9 on the lower side.
b is provided in a protruding manner, and the height at which the press contact 9b is attached is slightly lower than the position of the outer contact 9a. Furthermore, a plurality of locking holes 9c are formed in this outer contact plate. Reference numeral 10 denotes a mounting tube with a display ring 10a attached to its upper end surface, on which specimens such as time setting, continuous strike, high, medium, low, stop, and skip are written. Furthermore, spring setting grooves 10b are formed on the inner and outer peripheral walls at the same intervals as the markings. 1
Reference numeral 1 denotes an inner cylinder which is inserted into the inner space of the mounting cylinder 10 so as to be rotatable, and has a knob part 11a formed in its upper half, and a spring accommodation groove 11b and a stopper 11c formed in its lower half. are doing.

Further, a support protrusion 11d is provided at the center of the lower end surface of the inner cylinder 11.
A fitting piece 11e is formed at the base thereof, and a locking pin 11f is provided protruding from the lower end surface. Reference numeral 12 denotes an outer cylinder, which has a knurled knob portion 12a on its outer peripheral surface, and has a protrusion 12b and a locking pin 12c protruding from its lower inner peripheral edge.

Reference numeral 13 denotes an elastic spring, for example, a wire rod bent to form a substantially N-shape.

14 is a speaker connected to circuit network 1 of printed board A;
15 is the clock movement.

A method for assembling a plurality of parts formed in this way will be explained. One part of the elastic spring 13 is fitted into the spring housing groove 11b of the inner cylinder 11, and the other end is slightly protruded.In this state, the elastic spring 13 is inserted into the inner space of the mounting cylinder 10, and the other end is inserted into the spring setting groove 1.
0b. In addition, the spring housing groove 12d of the outer cylinder 12
One part of the elastic spring 13 is fitted into the spring 13, and the other end is engaged with the spring setting groove 10b on the outer circumferential wall of the mounting tube 10. In this way, the locking pin 11f of the inner cylinder 11 is fitted into the locking hole 8b of the inner contact plate 8, and the fitting piece 11e is fitted into the center hole 8c to connect them.
Further, the locking pin 12c of the outer cylinder 12 is fitted into the locking hole 9c of the outer contact plate 9 and coupled.

These are further assembled to constitute rotary switch B as one component block.

Next, a contact switching method of this contact switching device will be explained. When the outer cylinder 12 is rotated, the outer contacts 9a of the outer contact plate 9 connected to the lower end surface of the outer cylinder 12 come into sliding contact with the function switching lands 4, and functions can be switched such as time setting, continuous tapping, skipping, and stopping. . This rotational position is set by the elastic spring 13 being fitted into the spring housing grooves 12d of the inner cylinder 11 and the outer cylinder 12 and held. If you want to change the volume of the ticking sound, hold the knob 11a of the inner cylinder 11 and turn it, and slide the inner contact 8a of the inner contact plate 8 into contact with the volume switching land 5 of the printed board A. let

Therefore, the volume can be changed. These function switching lands and volume switching lands are arranged as shown in FIG. Next, when the outer cylinder 12 is rotated and set at the 1-time alignment position, if the outer cylinder 12 is pushed toward the printed board A, a protrusion protrudes from the lower end of the outer cylinder 12. 12b is inserted into the guide hole 7 of the printed board A,
The blades on the outer peripheral edge of the outer contact plate 9 are bent, and the pressing contacts 9b are pressed against the hour and number of strokes memory land 16.

That is, the protrusion 12b is inserted at a position other than the guide hole 7, and therefore the outer cylinder 12 cannot be pushed in, so the pressing contact 9
b does not come into pressure contact with the land 16 for remembering the number of strokes.

There is no time adjustment. As described above, the contact switching device for an electronic hourly clock of the present invention is formed by arranging lands for changing the hourly sound function and volume on a printed board equipped with an electronic hourly striking circuit, and having a knob portion and a land for changing the volume. An inner contact plate and an outer contact plate that can be slidably contacted with each land are connected to the rotating inner cylinder and outer cylinder, and the knobs thereof are rotated to switch the function and volume of the ticking sound. Because they are made to operate independently, there is no need to connect multiple lands for function switching and multi-stage switching for volume switching using multiple lead wires, making it extremely simple. It has the advantage of being able to have a simple structure and being easy to assemble. Further, as described in the second claim, an elastic spring is pressed into spring setting grooves formed on the outer circumferential surface of the inner cylinder and the inner circumferential surface of the outer cylinder to maintain the switching setting position by these two cylinders. This has the effect that each set position can be held elastically by the action of the elastic spring.

Furthermore, as described in claim 3, a press contact having a lower profile than the outer contact is attached to the outer contact plate connected to the outer cylinder, and the press contact is set by rotating the outer cylinder to set the time and press the press contact. By activating the switch, the switch can be activated by a simple push-in operation, and the switching of the contacts can be effected smoothly.

As described above, the contact switching device of the present invention can effectively switch the functions and volume necessary for an electronic timepiece, and has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of a contact switching device for an electronic timepiece according to the present invention, Fig. 2 is a vertical sectional view of the knob portion and the contact switching unit, Fig. 3 is a cross sectional view thereof, and Fig. 4 is a perspective view of the same, FIGS. 5 and 6 are exploded perspective views, and FIG. 7 is a plan view of a land for switching functions and volume on the printed board. A... Printed board, 1... Circuit network, 2... Electronic components, 3... Electronic timing circuit, 4... Land for function switching, 5... Land for volume switching, 6...・・Support hole, 7・・
・Guide hole, 8... Inner contact plate, 8a... Inner contact, 8b... Locking hole, 8c... Center hole, 9... Outer contact plate, 9a... Outer contact, 9b ...Press contact, 9
c... Locking hole, 10... Mounting cylinder, 10a... Display ring, 10b... Spring setting groove, 11... Inner cylinder, 11a
...Knob portion, 11b... Spring accommodation groove, 11c...
・Stopper, 11d... Support projection, 11e... Fitting piece, 11f... Locking pin, 12... Outer cylinder, 12a
...Knob portion, 12b...Protrusion, 12c...Lock pin, 12d...Spring accommodation groove, 13...Elastic spring,
14...Speaker, 15...Clock movement,
16...Land for remembering the number of strokes per hour, B...Rotary switch.

Claims (1)

[Scope of Claims] 1. Lands for changing the function of the time-beating sound and switching the volume are formed side by side on a printed board equipped with an electronic time-beating circuit, and an inner cylinder and an outer cylinder each having a knob portion and rotating about the center are formed. The invention is characterized in that an inner contact plate and an outer contact plate that can be slidably contacted with each of the lands are connected, and the knobs thereof are rotated to individually change the function of the ticking sound and the volume. Contact switching device for electronic hour clocks. 2. A patent claim characterized in that an elastic spring is pressed into spring setting grooves formed on the outer peripheral surface of the inner cylinder and the inner peripheral surface of the outer cylinder, and the switching setting position is held by the inner and outer cylinders. A contact switching device for an electronic hourly clock according to item 1. 3. A press contact that is lower in profile than the outer contact is attached to the outer contact plate connected to the outer cylinder, and the switch is operated by setting the time by rotating the outer cylinder and pressing the press contact. A contact switching device for an electronic hourly clock according to claim 1.