JP2759765B2 - Luminescent needle power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-emitting hand feeding device used in a watch with a light-emitting hand.

[0002]

2. Description of the Related Art Conventionally, as a power supply device of a luminescent hand used for a timepiece with a luminescent hand, there is one as shown in FIGS. That is, an hour hand a and a minute hand b which are light emitting hands, a contact member c which is arranged concentrically with the center of rotation of the hour hand, and which is rotatably fitted with the hour hand, an hour hand a and a minute hand b
, A pair of lead frames d, e, f,
g, two ring-shaped conductors h, h1, i, and i1 are provided on the base end of the hour hand a and the upper surface of the contact member c concentrically with the rotation centers of the hour hand a and the minute hand b. As shown in FIG. 6, a pair of lead frames d and e provided on the lower surface of the hour hand a are integrally formed with spring pieces d1, d2, e1 and e2 each having a contact point at the tip. I have. As shown in FIG. 5, the contact points of the spring pieces d1 and d2 of one lead frame d have a circular movement trajectory corresponding to the ring-shaped conductor i near the minute hand axis fixed to the upper surface of the contact member c. It is. The contacts e1 and e2 of the spring piece of the other lead frame e have a circular movement trajectory corresponding to the ring-shaped conductor i1 fixed to the upper surface of the contact member c and away from the minute hand axis. As shown in FIG. 7, two ring-shaped conductors h and h1 provided on the upper surface of the base end of the hour hand a and a pair of lead frames d and e provided on the lower surface are formed on the ring-shaped conductor h. The projected part j is a through hole k
, And are electrically connected to each other by being soldered to the lead frame d.

The configuration of the lower surface of the minute hand b is substantially the same as the configuration of the lower surface of the hour hand a, as shown in FIG. As shown in FIG. 5, the contact points of the spring pieces f1 and f2 of one lead frame f of the minute hand b have a circular movement trajectory corresponding to the ring-shaped conductor h provided on the upper surface of the hour hand a and near the minute hand axis. Things. The contact points g1 and g2 of the spring pieces of the other lead frame g have circular movement trajectories corresponding to the ring-shaped conductor h1 provided on the upper surface of the hour hand a and away from the minute hand axis.

Accordingly, the drive signal supplied to the two ring-shaped conductors i, i1 of the contact member c is supplied to the light emitting means m of the hour hand via the spring pieces d1, d2, e1, e2 of the hour hand a. Is applied to emit light, and at the same time, a drive signal is also supplied to the ring-shaped conductors h and h1 of the hour hand a.
As in the case of the hour hand a, a voltage is supplied to the light emitting means n of the minute hand b via the spring pieces f1, f2, g1, g2 of the minute hand b to emit light.

[0005]

However, in the prior art, when assembling the hour hand body, as shown in FIG. 7, a protrusion j formed on a ring-shaped conductor h provided on the upper surface of the hour hand is provided.
And the lead frames d and e provided on the lower surface of the hour hand are electrically connected to each other by soldering, so that a soldering process is required, resulting in an increase in cost. Also, a pair of lead frames d and d with spring pieces formed on the lower surfaces of both the minute hand b and the hour hand a.
Because of the provision of e, f, and g, there is a problem that care must be taken in handling both the minute hand and the hour hand so that the spring piece is not bent during assembly. Accordingly, an object of the present invention is to reduce the cost by eliminating the need for a soldering step, and to reduce the number of cautions in handling during assembly to facilitate assembly.

[0006]

In order to achieve the above object, a power supply device for a light emitting needle according to the present invention comprises a first hand and a second hand provided with a light emitting means, and a rotational center of the second hand. It comprises a contact member disposed concentrically and a pair of lead frames provided on the lower surface of the second pointer.
Two ring-shaped conductors are provided on the lower surface of the first pointer and the upper surface of the contact member, and the two ring-shaped conductors are arranged concentrically with the rotation centers of the first pointer and the second pointer. I have. The pair of lead frames is made of a thin metal plate, and each lead frame is integrally formed with two spring pieces each having a contact at the tip.
One spring piece of one lead frame is bent toward the contact member, and the contact of the spring piece has a circular movement trajectory corresponding to one of the two ring-shaped conductors of the contact member, The other spring piece of one lead frame is bent toward the first pointer through a through hole formed at the base end of the second pointer, and the contact point of this spring piece is It has a circular locus of movement corresponding to one of the two ring-shaped conductors. One spring piece of the other lead frame is bent toward the contact member, and the contact of this spring piece is
It has a circular movement locus corresponding to the other of the two ring-shaped conductors of the contact member. The other spring piece of the other lead frame penetrates a notch formed at the base end of the second pointer and bends toward the first pointer, and the contact point of the spring piece is It has a circular movement trajectory corresponding to the other of the two ring-shaped conductors. The contact member,
It is provided fixedly.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, an outline of a power supply device for a luminescent hand according to the present invention will be described. As shown in FIG. 1, a watch case 7 is provided on the lower side of FIG. The boss of the contact member 5 is fitted and fixed to the hollow bearing 7a. The hour hand pipe 10 and the minute hand pipe 30 are provided by the bearing 7a of the watch case 7.
The second hand shaft 8 is concentrically and rotatably bearing. The hour hand 1 is fixed to the projecting end of the hour hand pipe 10, the boss 30a is fixed to the tip of the minute hand pipe 30, and the minute hand 3 is fixed to the projecting end of the boss 30a. Watch case 7
A clock wheel train (not shown) is provided therein, and the hour hand 1 and the minute hand 3 are driven to rotate by the clock wheel train.

Next, a specific configuration of each component will be described. As shown in FIG. 2A, the hour hand 1 has a shaft hole 11 formed at a base end thereof, and a protruding end of the hour hand pipe 10 is fitted into and connected to the shaft hole. A through hole 12 through which a spring piece 2b described later can penetrate is formed at the base end of the hour hand 1 near the shaft hole 11, and a cutout through which a spring piece 21a can penetrate is formed on the outer periphery of the base end. 13 are formed. An elliptical window hole 14 is formed in the hand portion of the hour hand 1, and an EL element 15 is disposed at a position facing the window hole as shown in FIGS. 2 (b) and 2 (c). .

As shown in FIG. 2C, a pair of lead frames 2 and 21 made of a thin metal plate are provided on the lower surface of the base end of the hour hand 1 at a predetermined interval. Each of the lead frames 2 and 21 has a spring piece 2 whose tip is a contact.
a, 2b and 21a, 21b are integrally formed by extension. The spring pieces 2a and 2b on the center side extend in a counterclockwise direction, and the contact point at the tip has a small-diameter circular arc locus concentric with the hour hand pipe 10. The outer peripheral side spring pieces 21a and 21b extend in the clockwise direction, and the contact point at the tip has a large-diameter circular arc locus concentric with the hour hand pipe 10. As shown in FIG. 2B, one spring piece 2a, 21b of the pair of lead frames 2, 21 is bent downward, that is, toward the contact member 5, and the other spring piece 2b, 21a is It is bent upward, that is, toward the minute hand 3. As shown in FIGS. 2B and 3, the spring piece 2 b projects through the through hole 12,
As shown in (b), the spring piece 21a penetrates the notch 13 and protrudes. As shown in FIG. 2C, external connection terminals 16 and 16a drawn from the EL element 15 are connected to connection portions 2c and 21c extending from the lead frames 2 and 21 toward the tip of the hour hand 1, respectively. It is conducting.

As shown in FIG. 4A, the minute hand 3 has a shaft hole 31 formed at its base end, and a boss portion 30a (see FIG. 4A) fitted and fixed to the distal end of the minute hand pipe 30 in this shaft hole. (Shown in FIG. 1) are fitted and connected. An elliptical window hole 32 is formed in the needle portion of the minute hand 3, and FIG.
As shown in (c), an EL element 33 is disposed at a position facing the window.

As shown in FIG. 4C, two ring-shaped conductors 4 and 41 are provided concentrically with the rotation center of the minute hand 3 on the lower surface of the base end of the minute hand 3. The small-diameter ring-shaped conductor 4 located on the center side has an inverted C-shape, and the connecting portion 4b extends toward the tip of the minute hand at a position facing the gap 4a of the small-diameter ring-shaped conductor 4. Is formed. The large-diameter ring-shaped conductor 41 located on the outer peripheral side has a C-shape, and a protrusion 41a is formed so as to penetrate the above-described gap 4a of the ring-shaped conductor 4 at a predetermined interval. is there. At one end of the ring-shaped conductor 41, a connection portion 41b extending toward the tip of the minute hand 3 is formed at a position aligned with the connection portion 4b of the ring-shaped conductor 4. As shown in FIG. 4C, external connection terminals 34 and 34a drawn out of the EL element 33 are connected to both connection portions 4b and 41b, and are in a conductive state.

As shown in FIG. 1, the contact member 5 has a projection 5a formed concentrically with the center of rotation of the hour hand pipe 10 at the center of the upper surface thereof. Two ring-shaped conductors 6 and 61 are arranged concentrically with the projection 5a on the center side and the outer circumference side with the projection 5a interposed therebetween, and provided on the hour hand 1 and the minute hand 3 for each of the ring-shaped conductors 6 and 61. EL elements 15, 3
3 is supplied with a drive signal for emitting light.

As shown in FIG. 1, the contact of the spring piece 2a of the lead frame 2 provided on the hour hand 1 is slidable by contacting the small diameter ring-shaped conductor 6 on the contact member 5.
The contact b is slidable in contact with the large-diameter ring-shaped conductor 41 provided on the lower surface of the minute hand 3. The contact of the spring piece 21b of the other lead frame 21 is slidable by contacting the large-diameter ring-shaped conductor 61 on the contact member 5, and the contact of the spring piece 21a is provided on the lower surface of the minute hand 3. It can slide in contact with the small diameter ring-shaped conductor 4.

Next, the EL elements 15, 3 of the hour hand 1 and the minute hand 3
The means for supplying power to the device 3 to emit light will be described.
As shown in FIG. 1, the driving signal supplied to the ring-shaped conductors 6 and 61 provided on the upper surface of the contact member 5 receives the hour hand via the spring pieces 2a and 21b which are in contact with the respective ring-shaped conductors. 1 is supplied to the lead frames 2 and 21 and a voltage is applied to the EL element 15 through the connection portions 2c and 21c and the external connection terminals 16 and 16a to emit light. At the same time, a drive signal is supplied to the ring-shaped conductors 4 and 41 of the minute hand 3 via the spring pieces 2b and 21a, and
41b, the EL element 3 via the external connection terminals 34, 34a.
A voltage is applied to 3 to cause it to emit light.

As shown in FIG. 4C, the ring-shaped conductors 4 and 41 are provided with the protrusions 41a of the ring-shaped conductor 41 at the gaps 4a of the ring-shaped conductor 4 as described above.
The connection portion 4b of the ring-shaped conductor 4 is provided in the gap between the ring-shaped conductors 4.
Are located respectively, the contact points of the spring pieces 21a and 2b are connected to the projections 41a and the connection sections 4 of the ring-shaped conductors 4 and 41, respectively.
When sliding on b, the plus and minus of the voltage applied to the EL element 33 are reversed, but the application of the voltage does not stop and the EL element 33 emits light continuously.

[0016]

According to the present invention, a pair of lead frames is provided on the lower surface of the pointer, and the spring piece integrally formed on the lead frame is bent up and down. It is not necessary to solder the projection formed on the ring-shaped conductor provided on the upper surface of the lead and a pair of lead frames provided on the lower surface of the pointer, so that the cost can be reduced. In addition, a pair of lead frames in which the spring pieces are integrally formed only need to be provided on one of the hands, and need not be provided on the other hand. To facilitate assembly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

2A is a top view of the hour hand, FIG. 2B is a side view thereof,
(C) is a bottom view.

FIG. 3 is an enlarged vertical cross-sectional view of a part of the base end of the hour hand which is partially cut away.

4A is a top view of the minute hand, FIG. 4B is a side view thereof,
(C) is a bottom view.

FIG. 5 is a longitudinal sectional view showing a conventional example.

FIG. 6 is a bottom view of an hour hand showing a conventional example.

FIG. 7 is an enlarged vertical sectional view showing a part of the base end of the hour hand, showing a conventional example.

FIG. 8 is a bottom view of a minute hand showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 2nd hand (hour hand) 12 Through hole 13 Notch 15, 33 Light emitting means (EL element) 2, 21 Lead frame 2a, 2b, 21a, 21b Spring piece 3 1st hand (minute hand) 4, 41, 6, 61 Ring-shaped conductor 5 Contact member

Claims (1)

(57) [Claims] 1. A first pointer and a second pointer provided with a light emitting means.
A pointer, a contact member disposed concentrically with the center of rotation of the second pointer, and a pair of lead frames provided on the lower surface of the second pointer, the lower surface of the first pointer and the contact Two ring-shaped conductors are provided on the upper surface of the member, and the two ring-shaped conductors are arranged concentrically with the rotation centers of the first and second hands, respectively. The lead frame is made of a thin metal plate, and each of the lead frames is integrally formed with two spring pieces each of which has a contact at the tip end. And the contact of the spring piece has a circular movement trajectory corresponding to one of the two ring-shaped conductors of the contact member. The other spring piece of the one lead frame has , The second
The spring is bent toward the first pointer through a through hole formed at the base end of the pointer, and the contact point of the spring piece is a circle corresponding to one of the two ring-shaped conductors of the first pointer. The one spring piece of the other lead frame is bent toward the contact member, and the contact of the spring piece is connected to the other of the two ring-shaped conductors of the contact member. The other spring piece of the other lead frame has a corresponding circular movement trajectory.
The spring piece is bent toward the first pointer through a cutout formed at the base end of the pointer, and the contact point of the spring piece is a circle corresponding to the other of the two ring-shaped conductors of the first pointer. Wherein the contact member is fixedly provided.