JPS6241269Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a timepiece movement for a clock, and particularly to a protective structure for its connection terminal portion.

BACKGROUND ART Conventionally, a clock movement has a terminal portion exposed from a movement case for connecting an external device with a lead wire.
Therefore, there is a drawback that the built-in drive circuit malfunctions when a finger or the like comes into contact with this terminal portion. Further, since the connecting terminal portion is exposed, there is also the problem that the soldered portion of the lead wire is likely to break.

The present invention aims to eliminate the above drawbacks with a simple configuration.

The present invention will be described below with reference to embodiments shown in the accompanying drawings.

The move case includes a battery holder part 1a and a storage part 1 for storing a clock mechanism (not shown) and a circuit board 3 on which a driving circuit thereof is mounted.
It consists of b. Move case 1 (storage part 1
An exposure hole 2 is provided on the outer periphery of b), and the terminal portion 4 of the circuit board 3 faces the exposure hole 2 and is exposed to the outside. A lead wire 5 for connection to an external device such as an alarm device is connected to the terminal portion 4 by solder 7.

6 is a thickness that is both insulating and flexible
It is a terminal cover formed from a plastic sheet of approximately 0.3 mm, and is located in the exposed hole 2 of the move case 1.
The connecting portion between the terminal portion 4 and the lead wire 5 exposed through the exposure hole 2 is covered by the opening edge 2a. The tip end of the terminal cover 6 is an insertion part 6a that can be inserted into the inside (back) of the exposure hole 2 from the side. Further, in order to regulate the insertion depth of the terminal cover 6, a stepped portion 6c is formed protrudingly from one of both sides to abut the outer surface of the opening edge 2a of the exposure hole 2. Furthermore, in order to prevent the terminal cover 6 from coming off from the exposure hole 2, a tongue piece 6b that engages with the inner surface of the opening edge 2a of the exposure hole 2 is formed protruding from the other side of both sides. In this embodiment, the tongue piece 6b is formed so as to come into contact with the mounting post 1c of the move case 1.

To attach the terminal cover 6 to the exposed hole 2 of the move case 1, bend the terminal cover 6 and tilt it slightly to the right, and insert the insert 6a into the opening edge 2 of the exposed hole 2.
a and the circuit board 3, and when the stepped portion 6c comes into contact with the outer surface of the opening edge 2a, rotate the terminal cover 6 to the left and push the tongue portion b toward the opening edge 2a of the exposure hole 2. Hook it on. At this time, the protrusion 6b is attached to the mounting column 1c.
comes into contact with. Therefore, the insertion depth of the terminal cover 6 into the exposure hole 2 is regulated by the stepped portion 6c and the tongue portion 6b. In this way, the terminal cover 6 can be attached very easily. The terminal cover 6 inserted into the opening edge of the exposure hole 2 is pushed up from the inside by the raised solder 7 on the terminal part 4 and curved, making it even more difficult to separate. There is.

As described above, according to the present invention, the terminal cover has a simple structure and is easy to attach, and the drive circuit may malfunction due to contact of the terminal with a fingertip, and static electricity accumulated in the human body may accumulate. It is possible to reliably prevent the inconvenience of electrostatic damage to the circuit, and it also has significant practical effects, such as reducing the number of disconnections at lead wire connections.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is an enlarged plan view of the main part, Fig. 3 is an enlarged front view of the main part, Fig. 4 is a front view of the terminal cover, and Fig. 5 is a front view of the main part. The figure is a sectional view taken along the line V-V in FIG. 3. 1...Move case, 2...Exposure hole, 2a...
Opening edge, 3... Circuit board, 4... Terminal part, 5...
... Lead wire, 6 ... Terminal cover, 6a ... Insertion part, 6b ... Tongue piece, 6c ... Step part.

Claims (1)

[Scope of Claim for Utility Model Registration] A move case that houses a clock mechanism and a circuit board on which a driving circuit thereof is mounted, an exposure hole formed on the outer periphery of the move case, and a case facing the exposure hole. A terminal portion of the circuit board exposed to the outside through the hole, a lead wire soldered to the terminal portion for connecting an external device, and a connection between the terminal portion and the lead wire exposed through the exposure hole. a terminal cover that is secured to the opening edge of the exposed hole so as to cover the connection part; the terminal cover is made of an insulating and flexible sheet; an insertion part formed at the tip so that it can be inserted into the inside of the
In order to regulate the insertion depth of the terminal cover, a stepped portion is formed protruding from one of both sides and comes into contact with the outer surface of the opening edge of the exposed hole, and a stepped portion is formed to prevent the terminal cover from coming out of the exposed hole. 1. A timepiece movement characterized in that the tongue piece is formed protruding from the other side of both sides to prevent this from happening, and is engaged with the inner surface of the opening edge of the exposure hole.