JPH0617105Y2 - Loaded pointer with power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pointer with a load equipped with a power supply device.

[Prior Art and Problems to be Solved] Several examples have been proposed as a pointer with a load including a power supply device.

For example, Japanese Patent Application Laid-Open No. 49-68752 discloses a timepiece in which a time display hand is equipped with a light emitting body and a power supply device for supplying power to the light emitting body is provided at the center of rotation of the display hand. In this power supply device, two lead wires connected to a light emitting diode provided on a display needle are respectively guided to two conductor discs provided on a rotating shaft of the display needle,
Each fixed slider slides on the conductor disk.

Also, Japanese Utility Model Laid-Open No. 56-9083 proposes that two contact pieces are provided on the outer circumference of each of the hour hand pipe and the minute hand pipe, and the light emission provided on each of the hour hand and the minute hand. The power supply device was configured such that the two contact pieces connected to the body were respectively connected to the contact pieces provided on the outer circumference of each pipe.

However, according to the first example described above, it is possible to supply electric power to one display hand, but in the case of supplying electric power to a plurality of hands such as a hand of a clock, the axial direction is It was difficult to implement because it took up too much space.

Further, according to the second conventional example, as the number of pointers to be supplied with electric power increases, the contact piece 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 contact pieces 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.

Therefore, as a solution to such a drawback, it is possible to sequentially supply the electric power supplied to one pointer to the other pointers arranged on the upper part of the pointer with a simple configuration. A loaded pointer with a feeder was invented and is currently pending. This is one in which a contact base is fixed to the upper surface of the pointer, and a lead frame is fixed to the lower surface via an insulating plate. On the upper surface of this contact base, two ring shapes are concentric with the rotation center of the pointer. A conductor is provided. Further, the lead frame is integrally provided with a spring piece having a contact point whose movement locus is a concentric circle with respect to the rotation center of the pointer. The ring-shaped conductor and the lead frame are electrically connected.

In manufacturing the pointer with load, a method of fixing the contact base to the upper surface of the pointer, fixing the lead frame to the insulating plate, and then fixing the insulating plate to the lower surface of the pointer was used. However, at this time, there was a risk that the mounting position of the contact block on the upper surface of the pointer would shift, the ring-shaped conductor would not be concentric with the center of rotation of the pointer, and power could not be transmitted to the contact of another lead frame located above the pointer. . Also, if the lead frame mounting position is incorrect,
The movement locus of the contact points no longer draws a concentric circle with respect to the center of rotation of the pointer, making it impossible to transfer electric power from another ring-shaped conductor installed below the pointer.

Therefore, mounting the insulating plate to which the lead frame is fixed to the lower surface of the pointer and mounting the contact base to the upper surface of the pointer require precision, and the work must be performed carefully, which is not easy.

[Object of the Invention] Therefore, an object of the present invention is to accurately and easily attach the contact block and the lead frame in the pointer with load in which the contact block having the above-mentioned ring-shaped conductor is provided on the upper surface and the lead frame is provided on the lower surface. To be able to go to.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a pointer with a load including the power supply device according to the present invention is provided with an electric load and an upper surface of the pointer. It includes a contact block, an insulating plate fixed to the lower surface of the pointer, and a pair of lead frames provided on the pointer through the insulating plate. Two ring-shaped conductors rotate on the upper surface of the contact block. The lead frame is arranged concentrically with the center, and the lead frame is made of a thin metal plate and integrally formed with a spring piece having a contact at the tip, and is electrically connected to the ring-shaped conductor and the electric load. , The lower surface of the contact base is provided with a positioning projection, and the pointer and the insulating plate are each formed with a through hole facing the projection, and when the projection is fitted into the through hole, Of lead frame spring pieces The contact has a circular movement locus corresponding to one ring-shaped conductor, and the contact of the spring piece of the other lead frame has a circular movement locus corresponding to the other ring-shaped conductor.

[Operation] According to the present invention, when the pointer with load equipped with the power supply device is manufactured, the contact base and the insulating plate are contacted with each other while the protrusions of the contact base penetrate through the through holes of the pointer and the insulating plate. Stick to the pointer. Therefore, the contact base and the lead frame fixed to the insulating plate can be easily attached to an appropriate position of the pointer. Further, the positions of the contact base and the lead frame will not be displaced after the mounting.

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

As shown in FIGS. 1 to 3, downward projections 1a are provided on the lower surface of the contact base 1 made of an insulating material. A through hole 2a is provided at a position of the pointer 2 facing the protrusion 1a of the contact base 1. The contact base 1 is fixed to the pointer 2 in a state where the protrusion 1a penetrates the through hole 2a and projects to the lower surface of the pointer 2. A ring-shaped protrusion 1b is provided on the upper surface of the contact point 1 concentrically with the center of rotation of the pointer 2, and two ring-shaped conductors 3 and 4 are arranged on the outside and inside of the protrusion 1b. .
Part of each of the ring-shaped conductors 3 and 4 includes an L-shaped connection piece 3
a and 4a are bent, and these connecting pieces penetrate the contact point base 1 and project to the lower surface of the pointer 2.

A pair of lead frames 6 and 7 are fixed to the insulating plate 5. Further, the insulating plate 5 is provided with a through hole 5a at a position facing the protrusion 1a of the contact point base 1 protruding from the lower surface of the pointer 2. The insulating plate 5 is fixed to the lower surface of the pointer 2 with the protrusion 1a penetrating the through hole 5a. And the protrusion 1a
The tip of the, the part protruding from the lower surface of the insulating plate 5 is welded,
It is impossible to leave. In this way, the lead frames 6 and 7 are attached to the lower surface of the pointer 2.

The lead frames 6 and 7 supply electric power for driving the electric load 8 such as an electroluminescent element provided on the pointer 2 and have spring pieces 6a, 6b and 7a, 7b, respectively. ing. Spring pieces 6a, 6b
The contacts provided at the tips of and 7a and 7b are formed so that the movement path is a concentric circle with respect to the center of rotation of the pointer 2.

The two ring-shaped conductors 3 and 4 and the pair of lead frames 6 and 7 are electrically connected to each other, and the connection piece 3a of the ring-shaped conductor 3 is connected to the lead frame 6 and the ring-shaped conductor 4. The pieces 4a are fixedly connected to the lead frame 7 with solder 9, respectively. Furthermore, the extraction electrode 8 of the load 8
a and 8b are attached to the lead frames 6 and 7, respectively, and solder 9
It is fixed and connected with.

Next, the assembly of the pointer 2 with load will be described.

As shown in FIG. 4, the insulating plate 5 is provided with a through hole 5a, a jig hole 5b, and a cutting hole 5c. The lead frames 6 and 7 are integrally formed by the connecting piece 10, and jig holes 6c and 7c are formed therein. The jig hole 5b and the jig holes 6c and 7c have the same shape and size, and are in a position to face each other. The cutting hole 5c and the connecting piece 10 are also opposed to each other. Then, the jig holes 5b and the jig holes 6c and 7c are fitted to the protrusions (not shown) of the assembling jig, and the lead frames 6 and 7 are attached to the insulating plate 5 in that state. To be glued. Then the connecting piece 10
Is cut by a punch or the like penetrating the cutting hole 5c. As described above, the lead frames 6 and 7 can be easily fixed to an appropriate position of the insulating plate 5 without being deformed.

Next, the contact base 1 and the insulating plate 5 are fixed to the pointer 2 with the protrusion 1a of the contact base 1 penetrating the through hole 2a of the pointer 2 and the through hole 5a of the insulating plate 5. Then, the protrusion 1a is welded to the lower surface of the insulating plate 5. In this way, the lead frames 6 and 7 and the contact base 1 are attached to the pointer 2 at appropriate positions.

FIG. 5 is a cross-sectional view of the power supply device of the pointer 2 with a load as described above. Here, the above-mentioned pointer 2 is used as an hour hand.

The fixed contact base 11 is press-fitted into the upper end of the bearing 15 fixed to the timepiece mechanical body 12. A ring-shaped fixed conductor 13 is provided on the outer surface and the inner surface of the protrusion 11a on the upper surface of the fixed contact base 11,
14 is provided, and the connection pieces 13a, 14 projecting on the lower surface
a is a lead wire 16a leading to a drive circuit (not shown),
6b is connected. Above the fixed contact base 11, an hour hand shaft 17, a minute hand shaft 18, and a second hand shaft 19 which penetrate the bearing 12 are provided.
The hour hand 2, minute hand 22, and second hand 32 are fixed to each other. The hour hand 2, minute hand 22, and second hand 32 are
It is rotatable above the dial 20a fixed to 0.

Like the hour hand 2, the lead frame 2 is attached to the lower surface of the minute hand 22.
6 and 27 are fixed to each other via an insulating plate 25. The lead frames 26 and 27 supply electric power for driving a load such as an electroluminescent element provided on the minute hand 22. The contact points at the tips of the spring pieces 26a, 26b and 27a, 27b are The hour hand 2 can slide on the ring-shaped conductors 3 and 4.

With such a configuration, electric power is supplied from the drive circuit when driven by the timepiece mechanical body 12 and the hour hand 2, minute hand 22, and second hand 32 rotate at their respective rotational speeds to display the time. Then, the lead wire 16a is electrically connected to the ring-shaped fixed conductor 13, and further, the contacts sliding on the fixed conductor are electrically connected to the lead frames 6 from the spring pieces 6a and 6b, and then to the one extraction electrode 8a of the load 8. . At the same time, the lead wire 16b conducts to the ring-shaped fixed conductor 14, and further, the contacts sliding on the fixed conductor conduct electricity from the spring pieces 7a and 7b to the lead frame 7 and then to the other extraction electrode 8b of the load 8. . As a result, electric power is supplied to the load 8 of the hour hand 2.

Similarly, the lead frame 7 is electrically connected to one lead electrode of the load of the minute hand 22 via the ring-shaped conductor 4 and the lead frame 27, and the minute hand 22 is led from the lead frame 6 to the ring-shaped conductor 3 and the lead frame 26. The other load is connected to the other extraction electrode. As a result, electric power is supplied to the load of the minute hand 22.

As described above, the pointer with a load (hour hand) 2 provided with the power supply device according to the present invention transmits the power supplied from below to the pointer above and at the same time supplies the power to the load of each pointer.

[Effect] As described above, according to the present invention, electric power can be easily supplied to the hands with a simple structure applicable to a conventional timepiece mechanical body. Then, since the contact base and the lead frame are attached to the proper positions of the pointer, the sliding of the contact on the ring-shaped conductor is accurate and the supply of electric power is ensured. Also,
The lead frame and the contact base can be easily attached to an appropriate position of the pointer only by fitting the protrusion into the through hole.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is an enlarged side sectional view of a pointer with load, FIG. 2 is its plan view, and FIG.
FIG. 4 is a bottom view showing the same, FIG. 4 is a bottom view showing an assembly of a lead frame and an insulating plate, and FIG. 5 is an enlarged side sectional view of a power supply device of a pointer with a load. 1 ... Contact point block, 1a ... Protrusion, 2 ... Pointer (hour hand), 2a ... Through hole, 3, 4 ... Ring-shaped conductor, 5 ... Insulating plate, 5a ... Through hole, 6, 7 ... ... Lead frame, 6a, 6b, 7a, 7b ... Spring piece, 8 ... Electrical load.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Koichi Miyagi 4-1-1 Taihei, Sumida-ku, Tokyo Inside Seikosha Co., Ltd. (56) References JP-A-51-80259 (JP, A) 56-97715 (JP, U) Actually opened 62-84787 (JP, U) Actually opened 55-3795 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A pointer provided with an electric load, a contact base provided on an upper surface of the pointer, an insulating plate fixed to a lower surface of the pointer, and the pointer to the pointer via the insulating plate. A pair of lead frames provided, and two ring-shaped conductors are arranged concentrically with the rotation center of the pointer on the upper surface of the contact base. The lead frame is made of a thin metal plate. A spring piece having a contact at its tip is integrally formed and electrically connected to the ring-shaped conductor and the electric load, respectively, and a projection for positioning is provided on the lower surface of the contact base. ,
Through holes are respectively formed in the pointer and the insulating plate so as to face the protrusions, and when the protrusions are fitted in the through holes, one contact point of the spring piece of the lead frame is one. A circular movement locus corresponding to the ring-shaped conductor, and a contact point of the spring piece of the other lead frame has a circular movement locus corresponding to the other ring-shaped conductor. A pointer with a load equipped with a device.