JPH0524075Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an alarm clock equipped with an operating shaft that sets the guide at the push position and sets the hands at the pull position. The purpose of the invention is to simplify the structure.

Embodiments based on the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of the alarm clock of the present invention in the push position, and FIG. 2 is a cross-sectional view of the alarm clock in the pull position.

Reference numeral 1 denotes a lower plate from which a pointer shaft 2 projects downward. Although not shown in the drawings, the pointer shaft 2 has an indicator hand, an hour hand, a minute hand, and a second hand attached to it. 3 is a resin upper plate. The upper plate 3 is located above the lower plate 1, and the lower plate 1 and the upper plate 3 support the train of the movement. Number 4 is the Hinoura-guruma, which slows down from the speed of the minute hand to the speed of the hour hand. (The minute hand wheel and hour hand wheel are not shown.) 5 is an hour detection wheel, which rotates in conjunction with the hour hand wheel (not shown). 6
is a reference set wheel, which is connected to a reference needle wheel (not shown). As a guide, the setting wheel 6 has a setting protrusion 7, and the hour detection wheel 5 has a detection hole 8. When the detection hole 8 rotates and aligns with the setting protrusion 7, the hour detection wheel 5 is activated by the force of a spring (not shown). If the object falls, the alarm switch will turn on and cause an alarm. Reference numeral 9 has a set lever, and in the position shown in the figure, it prevents the detection wheel 5 from falling when it enters the lower side of the ball 10, and the alarm is set to OFF, but if the lever 9 slides in the direction of arrow 11, the ball 10, and set the alarm ON. Reference numeral 12 is a guide shaft formed integrally with the lower plate 1, and has a protrusion 13 in the middle on its circumference. Reference numeral 14 denotes a hole into which a core is inserted for abutting and molding the protrusion 13.
The inner diameter 15 of the reference setting wheel 6 is made slightly smaller than the width of the protrusion 13. When the reference setting wheel 6 is assembled from above the reference shaft 12, the inner diameter 15 is the protrusion 1.
3 with elastic expansion. Once passed, the inner diameter 15 is formed below the protrusion 13, and the reference setting wheel 6 is supported by the reference shaft 12 and positioned along the lower plate 1. Place the guide shaft 12 with the protrusion 13 on the lower plate 1
The structure is simple as it is integrally molded with resin.

Reference numeral 16 denotes an operating shaft, which is shown in the push position in FIG. 1 and in the pull position in FIG. The operating shaft 16 is made of resin and has a pinion 1 at its lower end.
7. A knob 18 is integrally held at the upper end.
In the push position, the pinion 17 is engaged with the guideline setting wheel 6, and by turning the knob 18, the guideline hand turns and the guideline can be set. In the pulled position, the pinion 17 is engaged with the hour wheel 4, and by turning the knob 18, the minute and hour hands can be rotated and set. Reference numeral 19 denotes a support shaft integrated with the lower plate 1, which enters the prepared hole of the operating shaft 16 and supports the lower side of the operating shaft 16. 20 is the upper plate 3
This bearing hole fits into the intermediate diameter portion 21 of the operating shaft 16 to support the upper side of the operating shaft 16. Reference numeral 22 denotes a cylindrical portion in which the bearing hole 20 is shifted higher in order to reduce sagging of the operating shaft 16. Cylinder part 1
7 is the thick operating shaft 16 of the completed alarm clock.
This is an effective measure to take when the situation is long. Reference numeral 23 denotes a small diameter portion that is smaller than the diameter of the pinion so that the operating shaft 16 escapes from the Hinoura wheel 4 at the push position shown in FIG.

In order to improve the operability of the alarm clock, the diameter of the knob 18 is preferably large. FIG. 3 is a sectional view showing a conventional structure. Conventionally, the shaft 51 was supported by being sandwiched between the lower plate 1 and the upper plate 3. Although the diameter 52 is made to protrude from the bearing hole 20 of the upper plate 3, the diameter of the diameter 52 cannot be larger than the diameter of the bearing hole 20, and it is difficult to operate the diameter 52. Therefore, it was necessary to attach a knob 53 with a larger diameter to the upper part. For this reason, there were disadvantages such as an increase in the number of parts, a time-consuming assembly, and the knob 53 coming off during operation. The present invention attempts to simplify the structure by integrally molding the large-diameter knob 18 with the operating shaft 16. Therefore, as in the conventional example shown in Fig. 3,
1 is not assembled by sandwiching it between the lower plate 1 and the upper plate 3, but for example, if the operating shaft 16 is inserted in the direction of the arrow 24 when the lower plate 1 and the upper plate 3 are assembled, it can be made as large as possible. We thought that it would be possible to have the knob 18 integrated.

Return to Figure 1. For assembly in the direction of arrow 24, in order for pinion 17 to pass through bearing hole 20 of upper plate 3, pinion 17 needs to be smaller than bearing hole 20. is larger than the diameter of the pinion 17. Since the assembly is performed in the direction of arrow 24, the diameter of the knob 18 can be made as large as desired regardless of the diameter of the intermediate diameter portion 21, and the knob 18 can be integrated. Therefore, the operating shaft 16 according to the present invention has a small diameter portion 23 smaller than the diameter of the pinion 17 immediately above the pinion 17, and a bearing hole 20 above it.
The intermediate diameter portion 2 is larger than the diameter of the pinion 17 that fits into the
1. The configuration includes a knob 53 which is a large diameter portion larger than the intermediate diameter portion 21 at the top.

If it is simply inserted in the direction of arrow 24, it will come out in the direction opposite to arrow 24. The present invention is designed to position the pushing position and pulling position in order to prevent this slippage. Reference numeral 25 denotes an elastic hook adjacent to the bearing hole 20 of the upper plate 3 and extending upward. Two or more elastic hooks 25 are provided facing each other. It has an inwardly curved edge 26 at its end. On the other hand, the operating shaft 16 is adjacent to the intermediate diameter portion 21 and has an abacus-shaped collar 27 above it. The edge 26 elastically presses against the collar 27. In the pressed position of FIG. 1, the edge 26 of the elastic hook 25 is depressed into the upper trough 28 of the collar 27. Assume that the operating shaft 16 is pulled out in the direction opposite to the arrow 24 from this position. The elastic hook 25 performs a spreading displacement by means of the collar 27. When it reaches the pulled position shown in FIG. 2, the edge 26 of the elastic hook snaps into the lower valley 29 of the collar 27. In this position, needle alignment can be performed stably. Furthermore, even if an attempt is made to pull it out from this position in the direction opposite to the arrow 24, the edge 26 is biting into the lower valley 29, so it will not come out easily. In this way, it is possible to simultaneously prevent slippage and moderate push/pull switching.

4 is a cross-sectional view of another embodiment of the present invention. The elastic hook 25 is provided extending downward from the bearing hole 20. The flange 27 is provided adjacent to the intermediate diameter portion 21 and downward. The assembly in the direction of the arrow 24, the prevention of disengagement, and the moderate switching are the same as those of the embodiment shown in FIGS. 1 and 2.

FIG. 5 is a sectional view of yet another embodiment of the present invention. The elastic arm 30 integrally extends upward from the lower plate 1. The elastic arm 30 can be arranged at a position where it does not interfere with the Hinoura wheel 4 guide set wheel 6.

Throughout the above explanation, what is called a guide set wheel may also be a guide needle wheel equipped with a guide needle.
The term "hour detection wheel" may be an hour hand wheel with an hour hand, but it may also include a ratio.

With the above ideas, we have created a large knob that is easy to operate, and since this knob is integrally molded with the operating shaft, it is inexpensive, and simultaneously prevents it from falling out and allows for moderate push/pull switching. It became possible to manufacture alarm clocks with a simple structure.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the pushing position according to the present invention, Figure 2 is a sectional view of the pushing position according to the present invention;
The figures are a sectional view of the drawing position shown in Fig. 1, Fig. 3 is a sectional view showing the conventional structure, Fig. 4 is a sectional view of another embodiment according to the present invention, and Fig. 5 is a sectional view of yet another embodiment according to the present invention. FIG. 3 is an example cross-sectional view. 3...Top plate, 4...Hi no Ura car, 6...Guide set car, 16...Operation axis, 17...Kana, 18...
Knob, 20...Bearing hole, 21...Intermediate diameter portion, 2
3...Small diameter portion, 25...Elastic hook, 27...Brim, 28...Upper valley, 29...Lower valley.

Claims (1)

[Scope of utility model registration request] There is a knob that protrudes upward through a bearing hole in the resin upper plate so that the guide is set at the push position and the needle is set at the pull position. In an alarm clock that engages with a reverse wheel, the operating shaft of the alarm clock must be molded of resin and be an integral piece with at least the above-mentioned pinion at the lower end and the above-mentioned knob at the upper end, and Immediately above is a small diameter part smaller than the pinion diameter for escaping the Hinoura wheel, above that is an intermediate diameter part larger than the pinion diameter that fits into the bearing hole, and at the top is the intermediate diameter part. The bearing hole is provided with a knob that is a large diameter part that is larger than the bearing hole, and there is an abacus-shaped collar adjacent to the intermediate diameter part, and the upper plate extends above or below the periphery of the bearing hole. An elastic hook is integrally provided, and the elastic hook is configured to engage with the upper valley of the collar in the push position and the lower valley of the collar in the pull position, so as to position the operating shaft. An alarm clock characterized by: