JPH0634035B2 - Power supply device for load pointer and light emitting needle and load pointer equipped with power supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a power supply capable of supplying electric power to a load for driving an electric load provided on the pointer, for example, by causing the pointer to emit light. TECHNICAL FIELD The present invention relates to a pointer with a load and a power supply device for a light emitting needle and a pointer with a load.

[Prior Art] In the prior art, in Japanese Patent Laid-Open No. 49-67552 (first conventional example), a time display hand is equipped with a light emitter, and power is supplied to the light emitter at the center of rotation of the display hand. There is disclosed a timepiece provided with a power supply device for. In this power supply device, the two lead wires connected to the light emitting diode provided on the display needle are respectively guided to the two conductor discs provided on the rotating shaft of the display needle, and the conductor is Each fixed slider slides on the disk.

Further, in Japanese Utility Model Laid-Open No. 56-9083 (second conventional example), two lead frames are provided on the outer circumferences of the hour hand pipe and the minute hand pipe, respectively, and are provided on the hour hand and the minute hand, respectively. The two lead frames connected to the light emitting body are configured to be connected to the respective lead frames provided on the outer circumference of each pipe.

Further, in Japanese Utility Model Laid-Open No. 56-97715 (third prior art example), an annular electrode piece for an anode and a grid electrode are concentrically formed around an opening formed at one end of a flat pointer substrate. And an annular electrode piece for a cathode are formed, and these annular electrode pieces are formed on both sides of the pointer substrate, and the electrode pieces on both sides are continuous with corresponding electrode pieces on both sides in through holes. . Lead wires are connected to each electrode piece,
The lead mounting holes are taken out. A fluorescent display tube is provided on the surface of the pointer substrate, and lead wires drawn from the extraction holes are connected to the anode, the grid and the cathode of the fluorescent display tube. Further, the brush contact electrode, which is always in sliding contact with the anode annular electrode piece, the grid electrode piece, and the cathode annular electrode piece, supplies power to these electrodes.

[Means to be Solved] However, according to the first conventional example, it is possible to supply electric power to one display hand, but electric power is supplied to a plurality of hands such as a hand of a clock. When supplying, too much space is taken in the axial direction, and further, the assembly efficiency is poor and it is difficult to implement.

Further, according to the second conventional example, as the number of pointers to be supplied with electric power increases, the lead frame provided on the outer periphery of each pipe becomes a large number of concentric layers, and the diameter of the central shaft portion becomes large. Configuration becomes complicated. Further, since these lead frames extend from the inside of the timepiece mechanical body, the conventional timepiece mechanical body cannot be used, and there is a problem that the design itself of the timepiece mechanical body must be changed.

Further, in the third conventional example, the assembly work is extremely complicated because the lead wire is manually inserted into the extraction hole to be connected.

Therefore, an object of the present invention is to improve the work efficiency of assembling with a simple structure, and to sequentially supply the power supplied to one pointer to the other pointers arranged on top of the pointer. It is to provide a loaded pointer with a possible power supply.

Another object of the present invention is to provide a load pointer power supply device that can easily supply power to the pointer without increasing the diameter of the central shaft and without changing the configuration of the mechanical body itself. It is in.

Further, another object of the present invention is to make it possible to easily add various new functions such as light emission of the pointer and expansion / contraction of the pointer by supplying power to the pointer.

[Means for Solving the Problems] The features of the present invention are: a pointer provided with an electrical load, a contact base provided on the upper surface of the pointer, and a pair of lead frames provided on the lower surface of the pointer. The contact base is provided with two ring-shaped conductors, the pair of lead frames are made of thin metal plates, and each of the lead frames has a spring piece whose tip is a contact. It is integrally formed, and the two ring-shaped conductors of the contact base are arranged concentrically with the rotation center of the pointer. Further, at least one of the lead frame and the ring-shaped conductor is integrally provided with a connection piece penetrating the contact base, and the ring-shaped conductor and the lead frame are connected via the connection piece. The lead frame is electrically conducted, and the lead frame is provided on the pointer through an insulating plate and supplies electric power for driving the load to the load. One of the contact points of the spring piece is
A circular movement locus corresponding to one of the two ring-shaped conductors, and a contact point of the spring piece on the other side of the lead frame has a circular movement locus corresponding to the other of the two ring-shaped conductors. It is in.

An electroluminescent element is used for the load provided on the pointer, and constitutes a light emitting needle.

Further, the power supply device for a pointer with load according to the present invention is provided with two ring-shaped fixed conductors arranged concentrically below the pointer so that the contacts of a pair of lead frames are slidable respectively. A lead wire leading to the drive circuit is connected to the fixed conductor.

Further, in the power supply device for a pointer with a load of the present invention, a pair of lead frames each having a contact slidable on two ring-shaped conductors are fixed above the pointer in the power supply device. There are two pointers.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an enlarged plan view of an essential part of a timepiece of a timepiece, in which an electric load 10 such as an electroluminescent element is provided on the upper surface of the hour hand 1 and a contact base made of an insulating material is provided. 2 is stuck.

A ring-shaped ridge 2a is provided on the upper surface of the contact base 2, and two ring-shaped conductors 3 and 4 are arranged outside and inside the ridge so as to be concentric with the rotation center of the hour hand 1. ing. Part of each of the ring-shaped conductors 3 and 4 is bent into L-shaped connecting pieces 3a and 4a as shown in the third drawing, and these connecting pieces penetrate the contact base 2. It projects from the lower surface of the hour hand 1 and is electrically connected to the lead frames 5 and 6.

FIG. 2 shows the lower surface of the hour hand 1, and a pair of lead frames 5 and 6 are fixed to the hour hand 1 via an insulating plate 7. The lead frames 5 and 6 are made of thin metal plates and supply electric power to drive the loads 10 provided on the hour hand 1. Each lead frame has a spring piece whose tip is a contact point. 5a, 5b and 6a, 6
b is integrally formed. The contact points at the tips of the spring pieces 5a and 5b of the one lead frame 5 have a circular movement locus corresponding to the one ring-shaped conductor 3 located outside, and the spring pieces 6a and 6a of the other lead frame 6 are 6b
The contact at the tip of the one of the ring-shaped conductors 4 located inside
It has a circular movement locus corresponding to.

The two ring-shaped conductors 3 and 4 and the pair of lead frames 5 and 6 are electrically connected to each other via the connection pieces 3a and 4a as described above. That is, the connection piece 3a of the ring-shaped conductor 3 is fixed to the lead frame 5 and the connection piece 4a of the ring-shaped conductor 4 is fixed to the lead frame 6 by solder 8 respectively. Further, as shown in FIG. 2, one extraction electrode 10a of the load 10 of the electroluminescent element is fixedly connected to the lead frame 5 and the other extraction electrode 10b is fixedly connected to the lead frame 6 with solder 8, respectively. .

To provide the lead frames 5 and 6 on the hour hand 1, holes 7a for cutting are formed in the insulating plate 7, and the pair of lead frames 5 and 6 are provided with connecting pieces (not shown) at positions facing the holes. It is provided and formed integrally. Then, the pair of lead frames 5 and 6 in the connected state are adhered to the insulating plate 7, and the connecting piece of the lead frames 5 and 6 is cut by a cutter penetrating the hole 7a. Then, after that, the insulating plate 7 is fixed to the hour hand 1. As a result, the lead frames 5 and 6 are not deformed on the lower surface of the hour hand 1 and are easily provided at correct positions.

Although not shown, the structure of the electroluminescent element provided on the hour hand 1 as the load 10 is, as is conventionally known, a transparent electrode formed on a transparent electrode base film, zinc sulfide, copper, chlorine or the like. The light-emitting layer containing the activity-imparting agent is laminated, and the back electrode is formed on the other surface of the light-emitting layer via an insulating layer such as barium titanate. Also, the bottom package film is sandwiched between moisture-proof films such as polychlorinated trifluoride ethylene, and the outer peripheral portions of both moisture-proof films are sealed with a hot-melt adhesive. The luminescent color of the luminescent layer is determined by an activity-imparting agent such as copper or chlorine, and five colors such as blue, orange, green, pink and white are well known. Second extraction electrode 1 shown
0a and 10b are connected to the transparent electrode and the back electrode, respectively.

FIG. 3 shows that the hour hand 1 as described above is incorporated,
FIG. 1 is a cross-sectional view of a power supply device for a pointer with load, in which a bearing 15 fixed to a timepiece mechanical body 11 is attached to an hour hand shaft 1;
6, the minute hand shaft 17 and the second hand shaft 18 pass through. Below the hour hand 1 and at the upper end of the bearing 15, a fixed contact base 12 having the same structure as the contact base 2 fixed to the upper surface of the hour hand 1 is press-fitted. That is, on the upper surface of the fixed contact base 12, the protrusion 1
The ring-shaped fixed conductors 13 and 14 are provided on the outside and inside of 2a, and the connection piece 13 projects to the lower surface of the fixed contact base 12.
a lead wire 19 leading to a drive circuit (not shown)
a and 19b are connected.

Further, above the hour hand 1, a minute hand 21 which is another pointer is arranged. On the lower surface of the minute hand, a pair of lead frames 25, 26 having the same structure as the lead frames 5, 6 provided on the lower surface of the hour hand 1 are fixed via an insulating plate 27. The lead frames 25 and 26 supply electric power for driving respective loads such as an electroluminescence element provided on the minute hand 21, and the spring pieces 25.
The contacts a, 25b and 26a, 26b can slide on the ring-shaped conductors 3, 4 of the hour hand 1.

The hour hand 1, the minute hand 21 and the second hand 31 are fixed to the hour hand shaft 16, the minute hand shaft 17 and the second hand shaft 18 via the respective hooks 1a, 21a and 31a, and are fixed to the dial plate 20. It is rotatable on the upper surface of.

With such a configuration, electric power is supplied from the drive circuit when driven by the timepiece mechanical body 11 and the hour hand 1, minute hand 21, and second hand 31 rotate at their respective rotational speeds to display the time. Then, the lead wire 19a conducts to the ring-shaped fixed conductor 13, and further to the lead frame 5 by the spring pieces 5a and 5b having contacts sliding on the fixed conductor, and then to the lead electrode 10a of the load 10 at the same time. By connecting the lead wire 19b to the ring-shaped fixed conductor 14 and to the lead frame 6 by the spring pieces 6a and 6b having contacts sliding on the fixed conductor 14, and then to the other extraction electrode 10b of the load 10, the hour hand 1 Power is supplied to the load 10. Next, similarly, the lead frame 6 is electrically connected to one of the extraction electrodes of the load of the minute hand 21 via the ring-shaped conductor 4 and the lead frame 26, and the lead frame 5 is connected to the ring-shaped conductor 3 and the lead frame 25 by the minute hand. 21
The minute hand 2 is connected to the other extraction electrode of the load
1 to supply power to the load. Spring pieces 5a and 5b, 6a and 6b are provided on the fixed conductors 13 and 14 and the conductors 3 and 4, respectively.
Since the contact point and the contact points of the spring pieces 25a and 25b and 26a and 26b slide, it is possible to change the spring pressure, spring height, spring length, sliding radius, etc. Improves the reliability of. Further, the protrusions 2a and 12a provided on the contact bases 2 and 12 prevent contact with the opposite fixed conductor or conductor even if the sliding path of the contact is slightly deviated.

The pointer with load (hour hand 1) and the power supply device of the present invention as described above drive the load provided on the pointer by the electric power supplied from below, and at the same time, the electric power is conducted to the pointer located above. Is something that will
It is possible to sequentially supply electric power to a large number of pointers that are positioned at the same axial center position and overlap each other, and to drive the load provided in each pointer.

[Effect] The pointer with a load including the power supply device of the present invention configured as described above has a simple structure and has a good assembly work efficiency, and at the same time the load can be driven by the electric power supplied to one pointer. It is possible to sequentially supply power to another pointer arranged on top of it.

By driving the electroluminescent element as a load, a light emitting needle can be easily obtained, and a light emitting needle that emits light in various colors can be supplied.

By providing the lead frame on the pointer through the insulating plate, deformation of the lead frame during assembly is prevented, the positional accuracy is improved, and the insulating effect is enhanced.

The power supply device for a pointer with load according to the present invention can easily supply power to the pointer without increasing the diameter of the central shaft portion and without changing the configuration of the mechanical body, and has a simple configuration. Then, by supplying power to the hands, new functions such as illuminating the hands and expanding and contracting the hands can be easily added.Furthermore, there are many developments regarding the supply of power to the multi-action display hands other than the timepiece. Is possible.

[Brief description of drawings]

FIG. 1 is an enlarged partial plan view of a main part of a pointer with load equipped with a power supply device, FIG. 2 is a bottom view of the same as above, and FIG. 3 is a cross-sectional view of the power supply device for pointer with load. 1 ... Pointer (hour hand), 2 ... Contact block, 3, 4 ... Ring-shaped conductor, 5, 6 ... Lead frame, 5a, 5b, 6a, 6b ... Spring piece, 7 ... Insulation plate, 10 ...... Load (electroluminescence element), 13,14 ...... Ring-shaped fixed conductor, 19a, 19b ...... Lead wire, 21 ...... Pointer (minute hand), 25, 26 ...... Lead frame, 25a, 25b, 26a, 26b ... a spring piece.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Isato Watanabe 4-1-1 Taihei, Sumida-ku, Tokyo Inside Seikosha Co., Ltd. (56) Bibliographic references Sho 56-97715 (JP, U) 57-105986 (JP, U)

Claims (4)

[Claims] 1. A pointer comprising an electric load, a contact base provided on an upper surface of the pointer, and a pair of lead frames provided on a lower surface of the pointer. A ring-shaped conductor is provided, and the pair of lead frames are made of thin metal plates, and each of the lead frames is integrally formed with a spring piece whose tip is a contact. The two ring-shaped conductors of the table are arranged concentrically with the center of rotation of the pointer, and at least one of the lead frame and the ring-shaped conductor is provided with a connecting piece penetrating the contact block. The ring-shaped conductor and the lead frame are electrically connected to each other through the connecting piece, and the lead frame is installed on the pointer through an insulating plate. The electric power for driving the load is supplied to the load, and the contact of the spring piece of one of the lead frames has a circular movement locus corresponding to one of the two ring-shaped conductors. The contact point of the other spring piece of the lead frame has a circular movement locus corresponding to the other of the two ring-shaped conductors. A pointer with load, comprising a power supply device. 2. A light emitting needle with a load, comprising a power supply device, wherein the load according to claim 1 is an electroluminescence element. 3. Below the pointer according to claim 1, there are provided two concentrically arranged ring-shaped fixed conductors on which the spring pieces of the pair of lead frames are slidable, respectively. A power supply device for a pointer with a load, characterized in that a lead wire leading to a drive circuit is connected to the conductor. 4. A second pointer, to which a pair of lead frames each having a spring piece slidable on the two ring-shaped conductors, is fixed, is arranged above the pointer according to claim 3. A power supply device for a pointer with a load, which is characterized in that