JPH0142074Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a watch mechanical body.

Conventionally, there have been watches that have a second hand located apart from the hour and minute hands. A mechanism for this type of timepiece has been proposed in which the distance between the hour and minute hands and the second hand can be changed, but this has the disadvantage that the distance changing operation is complicated.

The present invention eliminates the above-mentioned drawbacks, and aims to provide a timepiece mechanical body that can easily change the distance between the pointer axes of the hour and minute hand mechanical body and the minute hand mechanical body attached to the mounting body. It is something to do.

Embodiments of the present invention will be described in detail below.

In Figs. 1 to 5, reference numeral 1 denotes a mounting body, on which machine body housing portions 2 and 3 are formed. The opening directions of the machine body storage parts 2 and 3 are opposite to each other, with the machine body storage part 2 opening in the front direction and the machine body storage part 3 opening in the back direction. Note that when this timepiece mechanism body is attached to a timepiece frame body, the opening direction of the mechanism body storage portion 2 is at the rear of the timepiece frame body. Attachment claws 4, 4 are provided on the upper and lower walls of the mechanical body storage section 2, and the hour and minute hand mechanical body 5 is fixed by these attachment claws. The mechanical body 5 for the hour and minute hands is provided with a hand turning knob 5a, a second hand stop operation piece 5b, a battery holder 5c, and the like. Hour hand shaft 5 from the mechanical body 5 for hour and minute hands to the back side
d, the minute hand shaft 5e and the center fixing screw 5f protrude, and these things pass through the mounting body 1 and protrude. Although not shown, the mechanical body 5 for the hour and minute hands has a motor, a train wheel, and an electric circuit built therein. A second hand mechanical body 6 is housed in the mechanical body storage portion 3, and a second hand shaft 7 protrudes from the back side. There are permeable grooves 3 in the vertical direction on both sides of the front wall of the machine storage compartment 3.
a, 3a are formed, and both side walls of the mechanical body storage part 3 are arranged in the vertical direction, that is, the hour and minute hand shafts 5 of the mechanical body 5 for the hour and minute hands.
d, 5e and the second hand shaft 7 of the mechanical body 6 for the second hand. A plurality of protrusions are formed continuously in the vertical direction on the elastic parts 8 and 9, and a plurality of engagement grooves 8a... are formed between the plurality of protrusions.
..., 9a... On the other hand, the mechanical body 6 for the second hand
Engagement protrusions 6a, 6a, 6b, 6b that can be selectively engaged with the engagement grooves 8a, 9a, . . . are formed on both side walls. The second hand mechanical body 6 includes an engaging protrusion 6a,
6a, 6b, 6b and the engagement grooves 8a..., 9a..., are regulated in the vertical and horizontal directions. In addition, in the front-rear direction, that is, in the direction perpendicular to the plane of the paper, the second hand mechanical body 6 has projecting wall portions 3b and 3b on the front side.
The back side is held by hooks 8b, 9b provided on the elastic parts 8, 9 and hooks 6c, 6c provided on the second hand mechanical body 6. Although not shown, the second hand mechanical body 6 has a built-in motor and a wheel train, and is driven from the electric circuit of the hour and minute hand mechanical body 5 via a lead wire 10. On one elastic part 9 of the mounting body 1, numbers 9c are formed from "60" to "80" in 4 increments, and the mark 6 of the second hand mechanical body 6 is formed.
d, the distance between the hour and minute hand axes 5d, 5e and the second hand axis 7 can be determined.

This embodiment has the above configuration, and next, the hour and minute hand shafts 5
The operation for changing the distance between d and 5e and the second hand shaft 7 will be described. In the illustrated state, it can be seen from the mark 6c and numeral 9c shown in the third figure that the distance between the hour and minute hand axes 5d, 5e and the second hand axis 7 is 60 mm. When changing the distance, the second hand mechanical body 6 can be pressed downward. Engagement projections 6a, 6a, 6 of second hand mechanical body 6
b, 6b bend the elastic walls 8, 9 outward as shown in the fourth and fifth figures, and the engaging protrusions are connected to the adjacent engaging grooves 8a, 6b.
Move to 9a. In this way, the engaging protrusions 6a, 6
When a, 6b, 6b move one notch, that is, to the adjacent engagement grooves 8a, 9a, the hour and minute hand axes 5d, 5e
The distance between this and the second hand axis 7 increases by 4 mm to 64 mm. If you move 2 notches, it becomes 68mm, and at most you can move 5 notches to 80mm. In this way, the distance between the hour and minute hand shafts 5d, 5e and the second hand shaft 7 can be easily changed by simply pressing and moving the second hand mechanical body 6. Note that the engaging protrusion 6
a, 6a, 6b, 6b and the engaging groove portion 8a...,
The corners of the protrusions forming 9a... are slightly chamfered so that they can be easily climbed over.

Next, another embodiment of the present invention will be described with reference to FIGS. 6 and 7. A second hand mechanical body 6 is housed in a mechanical body housing portion 3 of the mounting body 1. An elastic portion 18 is formed in the mounting body 1 by through grooves 13, 13. The direction of the elastic portion 18 is also extended in the direction connecting the pointer shafts of the two mechanical bodies, as in the previous embodiment. A protrusion is continuously formed in the elastic part 18, and a plurality of engagement grooves 18a... are formed.
On the other hand, the second hand mechanical body 6 is formed with engagement protrusions 16a that can be selectively engaged with the engagement grooves 18a. In this embodiment as well, by pressing the second hand mechanical body 6, the elastic part 18 is bent as shown by the two-dot chain line, and the engaging protrusions 16a move to the adjacent engaging grooves 18a, and the second hand The mechanical body 6 moves. In this way, the distance between the two pointer axes can be changed extremely easily. Other symbols are substantially the same as in the previous embodiment.

Note that both of the two mechanical bodies may be movably attached to the mounting body 1 so that the distance between the pointer axes can be further changed.

As described above, according to the present invention, the distance between the hour and minute hand axes of the hour and minute hand mechanical body and the second hand axis of the second hand mechanical body can be changed very easily. Furthermore, since the two mechanical bodies are attached to one mounting body, there is an advantage that there is no disconnection of the lead wire connecting the two mechanical bodies.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a partially cutaway right side view, Fig. 3 is a partially cutaway rear view, Fig. 4 is an enlarged cross-sectional view taken along the line of Fig. 3, FIG. 5 is a cross-sectional view taken along the line of FIG. 4, FIG. 6 is a partially broken cross-sectional view of another embodiment, and FIG. 7 is a cross-sectional view taken along the line of FIG. 6. 1... Mounting body, 5... Mechanical body for hour and minute hands, 5d...
... Clock shaft, 5e... Minute hand shaft, 6... Second hand mechanical body, 7... Second hand shaft, 6a, 6b, 16a... Engaging protrusion, 8, 9, 18... Elastic part, 8a, 9a, 1
8a...Engagement groove.

Claims (1)

[Scope of claim for utility model registration] A mechanical body for the hour and minute hands to which the hour and minute hands are attached;
It consists of a mechanical body for the second hand to which the second hand is attached, and a mount to which the mechanical body for the hour and minute hands and the mechanical body for the second hand are attached; A plurality of engagement grooves are provided in the elastic portion and are arranged in parallel in the direction, and at least one of the two mechanical bodies has the plurality of engagement grooves. A timepiece mechanical body that is provided with an engaging protrusion that can be selectively engaged in a matching groove and that can adjust the distance between the respective pointer shafts of the two mechanical bodies.