JPS606772Y2 - Hand illumination clock hand structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a structure for attaching a conductive spring for receiving power to the hands of a hand-illuminating watch, and includes conductors 5, 5 on the hand substrate 3 of the hands of the minute hand 1, hour hand 2, etc. that are conductive to the light source 4. ′ are laminated, and hooks such as the minute hand hook 12 and the hour hand hook 13 are inserted into the through hole 8 provided in the needle base plate 3, and the elastic shaft pieces 10 are placed laterally from the upper ends of the plate-shaped conductive springs 9 and 9′. At the same time, a locking piece 11 is provided protrudingly below the elastically contacting shaft piece 10, and the elastically contacting shaft piece 10 of the pair of conductive springs 9, 9'
and the locking piece 11 is fitted into the hole edge of the through hole 8, and the elastically contacting shaft piece 10 of each conductive spring 9, 9' is connected to the conductor 5 on the needle base plate 3.
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This is related to the structure of the hands of a hand-illuminated watch characterized by the lower ends of the hands being in contact with each other, and its purpose is to connect the hooks, such as the minute hand to the hook and the hour hand to the drive shafts of the minute hand pipe, hour hand pipe, etc. To provide a hand structure for a hand-illuminated timepiece, which is free from the risk of disconnection of electrical connection between a conductor and a conductive spring when inserted, and can improve assemblability.

The present invention will be explained in detail below with reference to Examples.

14 is a second hand, and the second hand shaft 1 is the driving shaft of the second hand 14.
5, the seconds axis is fixed with a hook 16.

1 is a minute hand, 2 is an hour hand, and a needle substrate 3 is attached to the back side of the minute hand 1 and the hour hand 2.

A light source 4 is disposed inside the minute hand 1 and the hour hand 2, and conductors 5 and 5' (circle 1) are laminated on each hand substrate 3 to be electrically connected to the light source 4.

A through hole 8 is formed in the base side of the hand base plate 3 of the minute hand 1 and the hour hand 2, and a hook insertion hole 17 is formed above the through hole 8.

A resilient shaft piece 10 that can be bent diagonally downward is extended from both sides of the plate-shaped conductive spring 9,9', and a right triangular locking piece 11 is protruded below the elastic shaft piece 10. It is.

The minute hand hook 12 and the hour hand hook 13 are formed in a cylindrical shape,
A collar portion 18 is provided around the upper end.

The insulating bushing 19 has a cylindrical shape and has a flange 20 around its upper end.

The elastic shaft pieces 10 and locking pieces 11 of a pair of conductive springs 9, 9' are fitted into the hole edges of the through holes 8 of the needle base plate 3 of the minute hand 1 and the hour hand 2, and each elastic shaft piece 10 are in elastic contact with a pair of conductors 5 and 5', respectively.

At this time, since the distance between the lower end of the elastically contacting shaft piece 10 and the upper end of the locking piece 11 is made smaller than the thickness of the needle base plate 3, the elastically contacting shaft piece 1
0 will surely make elastic contact.

An insulating bushing 19 is inserted into the inner periphery of the conductive springs 9, 9', and a minute hand hook 12 and an hour hand hook 13 are inserted into the insulating bushing 19! 2. The upper ends of the minute hand hook 12 and the hour hand hook 13 are locked in the hook insertion hole 17.

At this time, if the insulating bushing 19 has a flange 20, it is possible to prevent rattling between the minute hand rotary rotary 12 or the hour hand rotary rotary 13 and the conductive spring 9.degree. 9'.

Between the outer periphery of the minute hand hook 12 to the hour hand hook 13 and the insulating bush 19, the minute hand hook 12 to the hour hand hook 13 are fitted into the minute hand vibro or hour hand pipe 7, which will be described later. Make sure to leave some space.

The minute hand vibro, which is the drive shaft of the minute hand 1, is fitted onto the second hand shaft 15, and the hour hand pipe 7, which is the drive shaft of the hour hand 2, is fitted onto the minute hand vibro.

The outer periphery of the minute hand vibro and hour hand pipe 7 has a conductive plate 2 marked with ■.
1 and ○ conductive plate 21' are attached, and the conductive plate 21,
A contact portion 22, 22' extends outward from the upper end of 21'.

Furthermore, 23 is a set screw, and 24 is a dial.

Minute hand 1 and hour hand 2 are from minute hand hook 12 to hour hand hook 13.
It is attached by fitting the minute hand vibro to the upper end of the hour hand pipe 7.

At this time, the conductive springs 9, 9' are subjected to 49 moments shown by the arrows in Fig. 1 by the contact portions 22, 22', and if the conductive springs are soldered, the holding force against this force is small, but the main If the conductive spring 9°9' is attached with the resilient shaft piece 10 and the locking piece 11 as in the invention, the electrical connection will not come off.

Since the present invention is constructed as described above, when the minute hand or hour hand hook is fitted onto the upper end of the minute hand pipe or hour hand pipe, the elastic contact shaft piece of the conductive spring does not separate from the conductor due to pressure force. Unlike the case where a conductive spring is attached by soldering, there is no risk of the electrical connection coming off, and since it can be assembled without the need for soldering, the assembly work efficiency can be improved.

[Brief explanation of drawings]

Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a view taken along the line AA' in Fig. 1, Fig. 3 is a view taken along the line B-B' in Fig. 1, and Fig. 4 is a sectional view taken along the line AA' in Fig. 1. 5 is a perspective view of the conductive spring as above, 1 is a minute hand, 2 is an hour hand, 3 is a needle board, 4 is a light source, 5.5' is a conductor, 6 is the minute hand pipe,
7 is an hour hand pipe, 8 is a through hole, 9, 9' is a conductive spring, 10
11 is a resilient shaft piece, 11 is a locking piece, 12 is a minute hand hook, 13 is an hour hand hook, and 21.21' is a conductive plate.

Claims (1)

[Scope of utility model registration request] A conductor that can be connected to a light source is laminated on the needle substrate of the minute hand, hour hand, etc., and a hook such as a hook for the minute hand and a hook for the hour hand is inserted into the through hole provided in the needle substrate, and the hook is inserted from the upper end of the plate-shaped conductive spring to the side. At the same time, a locking piece is provided below the elastic shaft piece, and a locking piece is fitted to the edge of the through hole between the elastic shaft piece and the locking piece of the pair of conductive springs. At the same time, the resiliently contacting shaft piece of each conductive spring is brought into elastic contact with the conductor on the needle board, the hook is inserted into a drive shaft of a minute hand pipe, an hour hand pipe, etc., and the above-mentioned hook is inserted into a pair of conductive plates provided on the outer periphery of the drive shaft. A hand structure of a hand-illuminated watch, characterized in that the lower ends of a pair of conductive springs are in contact with each other.