JP3482099B2 - Pointer conduction device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pointer conduction device used as a pointer provided with a light emitting means or the like.

[0002]

2. Description of the Related Art Generally, a timepiece having a pointer provided with a light emitting means is known. That is, the pointer used in this type of timepiece is provided with a light emitting element that emits light by obtaining a required current, and is configured to be able to supply power to this light emitting element.

For example, in the case of the light-emitting needle power supply device disclosed in Japanese Patent Application Laid-Open No. 8-184681, a lead frame made of a thin metal plate is provided on the pointer, and a spring piece formed by bending the lead frame is used. The tip is slidably contacted with a ring-shaped conductor provided on a contact member arranged concentrically with the center of the rotation axis of the pointer or a ring-shaped conductor provided on another pointer, and the EL provided on the pointer and other pointers It is configured to supply power to the element.

[0004]

By the way, the above-mentioned guideline requires stability and durability of power supply to the light emitting element. That is, it is necessary that the electrical connection between the two conductive parts is surely made over a long period of time.

In this respect, the above-mentioned Japanese Patent Laid-Open No. 8-184681
In the power supply device for the light-emitting needle disclosed in Japanese Patent No. 3,968, the spring piece is formed by bending the lead frame made of a thin metal plate, so that its elasticity is likely to be slow, and the tip of the spring piece and the ring-shaped conductor are It was noticeable that a gap was formed at the sliding contact of No. 1 and the conduction failure occurred.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pointer conducting device in which electrical connection between a conductive portion of the pointer and a conductive portion separate from the pointer is ensured for a long period of time.

[0007]

The invention described in the first claim of the present application is, in a pointer conduction device for electrically connecting a conductive portion of a pointer and a conductive portion outside of the pointer, a conductive portion of both of the conductive portions. A coil spring made of a conductor is interposed between the coil spring and the end portion of the coil spring, and one or both of the conductive portions are slidably contacted with each other.
The coil spring supports the pointer.
This is a pointer conduction device attached to the outer circumference of the pointer pipe .

As described above, the guiding device of the present invention is
A coil spring made of a conductor is interposed between both conductive parts,
Since the end portion of the coil spring and one or both of the conductive portions are brought into sliding contact with each other, a gap is less likely to be formed at the sliding contact, and the stability and durability of conduction can be improved. That is, in the related art, the spring piece formed by bending the lead frame made of a thin metal plate and the ring-shaped conductor are slidably contacted with each other. It was remarkable that the gap was formed between them, but in the present invention,
For such a spring piece, since a coil spring that is relatively excellent in elasticity is used, it is possible to efficiently suppress the formation of a gap at the sliding contact, and as a result, poor conduction. Can be reduced.

If the ends of the coil spring are in sliding contact with both conductive parts, the coil spring and the pointer and the like can be formed separately, and the handleability thereof can be improved. That is, in the prior art, since the spring piece and the pointer and the like are integrally formed, when the spring piece is deformed or worn, the spring piece and the pointer and the like had to be replaced together. However, since the coil spring is used, these components can be individualized and such inconvenience can be eliminated.

Further, the invention of the present application is a pointer conduction device having a structure in which the coil spring is mounted on the outer circumference of a pointer pipe which supports the pointer.

As described above, in the pointer conducting device according to the present invention, since the coil spring is attached to the outer circumference of the pointer pipe for supporting the pointer, an annular conductive portion such as a conventional ring-shaped conductor is not provided. In addition, the sliding point between the conductive portion and the tip of the coil spring can be secured, and the structure can be simplified. Especially, when a plurality of coil springs are attached to the outer circumference of the pointer pipe, by using coil springs having different diameters, it is possible to secure the distance between them and avoid unnecessary contact between the coil springs. As a result, it is possible to avoid a short circuit of a circuit configured using this.

The invention described in claim 2 of the present application is, in the invention of claim 1, an indicator conducting device having a structure in which the conductive portion is provided with a projection protruding toward the coil spring.

As described above, in the conducting device of the pointer according to the present invention, since the conductive portion is provided with the projection protruding toward the coil spring, the area of the sliding contact can be limited to reduce the friction resistance. Further, it is possible to improve durability against abrasion of the conductive portion and the coil spring due to sliding contact. Further, by providing such a protrusion, the coil spring is isolated from other conductive parts and is in a non-contact state, so that a short circuit of the circuit can be avoided.

The invention described in claim 3 of the present application is, in the invention of claim 1 or 2 , a conducting device for a pointer, wherein the conductive portion of the pointer and the conductive portion of another pointer are electrically connected. is there.

As described above, since the conducting device of the pointer of the present invention electrically connects the conductive portion of the pointer and the conductive portion of the other pointer, it is composed of a plurality of pointers such as an hour hand and a minute hand. It can be used for watches.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings.

As shown in the external perspective view of FIG. 1, the exploded perspective view of FIG. 2 and the cross-sectional views of FIGS. 3 and 4, the pointer conducting device 1 of this embodiment has an hour hand 2 and a minute hand 3, and these pointers. The hour hand pipe 4 and the minute hand pipe 5 which respectively support 2, 3, the contact point plate 6 fixed to the dial plate or the lower plate of the movement through which the pointer pipes 4 and 5 penetrate, and the outer circumference of the hour hand pipe 4. A plurality of coil springs 7 and 8 to be mounted and a plurality of coil springs 9 and 10 to be mounted on the outer circumference of the minute hand pipe 5 are provided, and the conductive portions 21 and 22 of the hour hand 2 and the conductive portions 61 of the contact plate 6 are provided. , 62 are electrically connected via the coil springs 7 and 8, and the conductive portions 31 and 32 of the minute hand 3 and the conductive portions 21 and 22 of the hour hand 2 are electrically connected via the coil springs 9 and 10. Connected to each other.

Each of the hands 2 and 3 is provided with a light emitting element (not shown), and each of the conductive portions 21, 22, 31 and 32 is an electrode of these light emitting elements. In the figure, 11
Is a second hand, and 12 is a second hand pipe that supports the second hand 11. The second hand 11 rotates together with the second hand pipe 12. Each pointer 2, 3 and each coil spring 7, 8, 9, 10
As shown by the chain line in FIG. 2, the second hand pipe 12 is inserted into the support end portion 11a of the second hand 11 and fitted onto the respective pointer pipes 4 and 5.

The pointers 2 and 3 rotate together with the pointer pipes 4 and 5, respectively. That is, the guidelines 2 and 3 are
Annular base end portions 2a and 3a which are fitted on the pointer pipes 4 and 5 respectively.
Is provided, and each of the pointer pipes 4, 4 is attached to these base end portions 2a, 3a.
5 are inserted and attached. The pointer pipes 4 and 5 have stepped portions 4 for positioning the pointers 2 and 3, respectively.
a and 5a are provided. The hour hand 2 is arranged between the minute hand 3 and the contact plate 6, and the hour hand pipe 4 is arranged on the outer circumference of the minute hand pipe 5.

Between the hour hand 2 and the contact plate 6, the coil spring 7 is interposed between the conductive part 21 of the hour hand 2 and the conductive part 61 of the contact plate 6, and both ends thereof are respectively formed by these conductive parts. Sliding contact with 21, 61. The coil spring 8 is interposed between the conductive portion 22 of the hour hand 2 and the conductive portion 62 of the contact plate 6, and both ends of the coil spring 8 are in sliding contact with the conductive portions 22 and 62, respectively. These coil springs 7 and 8 have different diameters, are arranged concentrically with respect to the rotation center of the hour hand pipe 4 at intervals, and the insulating rods 23, 23 provided on the hour hand 2 and Insulation rod 6 provided on the contact plate 6
The coil spring 7 and the coil spring 8 are regulated by 3, 63 so that they do not come into contact with each other.

Further, between the hour hand 2 and the minute hand 3, the coil spring 9 has a conductive portion 21 of the hour hand 2 and a conductive portion 3 of the minute hand 3.
1, and both ends thereof are slidably contacted with each other through the conductive portions 21 and 31 and the conductor rod 21a provided so as to project from the back surface of the base end portion 2a to the front surface. Further, the coil spring 10 is interposed between the conductive portion 22 of the hour hand 2 and the conductive portion 32 of the minute hand 3, and both ends of the coil spring 10 from the back surfaces of the conductive portions 22 and 32 and the base end portion 2a, respectively. It is slidably contacted via a conductor rod 22a provided so as to project on the surface. These coil springs 9 and 10 also have different diameters, are spaced apart from each other, and are arranged concentrically with respect to the rotation center of the minute hand pipe 5, and the insulating rod 2 provided on the hour hand 2 is provided.
It is regulated by the insulating rods 33, 33 provided on the hands 3, 23 and the minute hand 3.

Further, the conductive portions 21 and 22 of the hour hand 2 are provided with projections protruding toward the coil springs 7, 8, 9 and 10 by the conductor rods 21a and 22a provided so as to penetrate the hour hand 2. Therefore, the coil spring 9 is attached to the conductive portion 31 of the minute hand 3 by the conductor rod 31a provided in the state of being inserted into the minute hand 3.
It forms a protrusion protruding to the side. That is, these conductor rods 21a, 22a, 31a are connected to the coil springs 7,
It is a sliding contact that makes sliding contact with 8 and 9.

According to this structure, the conductive portion 6 of the contact plate 6
Electric power is supplied to the light emitting elements of the hour hand 2 and the minute hand 3 by inputting electric power from the terminal portions 61a and 62a formed on the terminals 1 and 62. The terminal portion 62a of the conductive portion 62 is formed in a concave shape with respect to the surface of the contact plate 6, and the coil spring 7
Avoid contact with.

The flow of current is carried by the conductive portion 61, the coil spring 7, the conductive portion 21, the coil spring 9, the conductive portion 31, the light emitting element provided on the minute hand 3, the conductive portion 32, and the coil spring 10.
It becomes the conductive portion 22, the coil spring 8, and the conductive portion 62.

In this embodiment, both ends of the coil spring are slidably contacted with the conductive portion provided on the pointer and the conductive portion provided on the contact plate. In addition to slidingly contacting both of them, for example, by fixing one end of the coil spring with the conductive part provided on the pointer, the other end of the coil spring is slidably contacted with the conductive part provided on the contact plate. You may comprise so that it and one of the electroconductive parts may be slidably contacted.

As explained above, in the conducting device of the pointer of the present example, the coil spring made of a conductor is interposed between both conductive parts, and the end of the coil spring and one or both of the conductive parts are arranged. Since the sliding contact is made, a gap is less likely to be formed at the sliding contact, and the stability and durability of conduction can be improved. That is, in the related art, since the spring piece formed by bending the lead frame made of a thin metal plate and the ring-shaped conductor are slidably contacted with each other, the elasticity of the spring piece is slow due to long-term use and wear due to the sliding contact. It was remarkable that a gap was formed between them, but in the present invention, a coil spring excellent in maintaining elasticity is used for such a spring piece. Therefore, it is possible to efficiently suppress the formation of the gap at the sliding contact, and as a result, it is possible to reduce the conduction failure.

Further, if the end of the coil spring and the conductive portions of both are slidably contacted with each other, the coil spring and the pointer and the like can be formed separately, and the handleability thereof can be improved. That is, in the prior art, since the spring piece and the pointer and the like are integrally formed, when the spring piece is deformed or worn, the spring piece and the pointer and the like had to be replaced together. However, since the coil spring is used, these components can be individualized and such inconvenience can be eliminated.

Further, since the coil spring is attached to the outer circumference of the pointer pipe for supporting the pointer in the pointer conducting device of the present embodiment, it is possible to conduct the pointer without providing an annular conductive portion such as a conventional ring-shaped conductor. It is possible to secure a sliding point between the portion and the tip of the coil spring, and the structure can be simplified. Especially, when a plurality of coil springs are attached to the outer circumference of the pointer pipe, by using coil springs having different diameters, it is possible to secure the distance between them and avoid unnecessary contact between the coil springs. As a result, it is possible to avoid a short circuit of a circuit configured using this.

Further, in the conducting device of the pointer of the present example, since the conductive portion is provided with the protrusion protruding toward the coil spring, the area of the sliding contact can be limited to reduce the friction resistance. It is possible to improve durability against abrasion of the conductive portion and the coil spring due to the sliding contact. Further, by providing such a protrusion, the coil spring is isolated from other conductive parts and is in a non-contact state, so that a short circuit of the circuit can be avoided.

Further, in the conducting device of the pointer of the present example, the conductive portion of the pointer and the conductive portion of another pointer are electrically connected,
It can be used for a timepiece including a plurality of hands such as an hour hand and a minute hand.

[0031]

As described above, in the invention described in the first claim of the present application, in the conducting device of the pointer for electrically connecting the conductive portion of the pointer and the conductive portion outside the pointer, both the conductive portions of the pointer are connected. part interposed a coil spring made of a conductor during, constructed by sliding contact with an end of said coil spring and one or both of the conductive portions, the further the coil spring, the guidance
It is a pointer conduction device attached to the outer circumference of the supporting pointer pipe .

As described above, the guiding device of the present invention is
A coil spring made of a conductor is interposed between both conductive parts,
Since the end portion of the coil spring and one or both of the conductive portions are brought into sliding contact with each other, a gap is less likely to be formed at the sliding contact, and the stability and durability of conduction can be improved. That is, in the related art, since the spring piece formed by bending the lead frame made of a thin metal plate and the ring-shaped conductor are slidably contacted with each other, the elasticity of the spring piece is slow due to long-term use and wear due to the sliding contact. It was remarkable that the gap was formed between them, but in the present invention,
For such a spring piece, since a coil spring that is relatively excellent in elasticity is used, it is possible to efficiently suppress the formation of a gap at the sliding contact, and as a result, poor conduction. Can be reduced.

Further, if the end of the coil spring is in sliding contact with both conductive parts, the coil spring and the pointer and the like can be formed separately, and the handleability thereof can be improved. That is, in the prior art, since the spring piece and the pointer and the like are integrally formed, when the spring piece is deformed or worn, the spring piece and the pointer and the like had to be replaced together. However, since the coil spring is used, these components can be individualized and such inconvenience can be eliminated.

Further, the present invention is a pointer conduction device having the coil spring mounted on the outer circumference of a pointer pipe for supporting the pointer.

As described above, the pointer conducting device of the present invention is
Since the coil spring is attached to the outer circumference of the pointer pipe that supports the pointer, the sliding point between the conductive portion and the tip of the coil spring is secured without providing an annular conductive portion like the conventional ring conductor. The configuration can be simplified. Especially, when a plurality of coil springs are attached to the outer circumference of the pointer pipe, by using coil springs having different diameters, it is possible to secure the distance between them and avoid unnecessary contact between the coil springs. As a result, it is possible to avoid a short circuit of a circuit configured using this.

The invention described in claim 2 of the present application is, in the invention of claim 1, an indicator conducting device having a structure in which a protrusion protruding toward the coil spring is provided on the conductive portion.

As described above, the guiding device of the present invention is
Since the conductive part has a protrusion protruding toward the coil spring,
The area of the sliding contact can be limited to reduce the frictional resistance, and further, the durability against the abrasion of the conductive portion and the coil spring due to the sliding contact can be improved. Further, by providing such a protrusion, the coil spring is isolated from other conductive parts and is in a non-contact state, so that a short circuit of the circuit can be avoided.

The invention described in claim 3 of the present application is, in the invention of claim 1 or 2 , a pointer conduction device having a structure in which the conductive portion of the pointer and the conductive portion of another pointer are electrically connected. is there.

As described above, the guiding device of the present invention is
Since the conductive part of the pointer and the conductive part of the other pointer are electrically connected, it can be used in a timepiece including a plurality of hands such as an hour hand and a minute hand.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a pointer conduction device according to a specific example of the present invention.

FIG. 2 is an exploded perspective view showing a pointer conducting device according to a specific example of the present invention.

FIG. 3 is a cross-sectional view showing a pointer conduction device according to a specific example of the present invention.

FIG. 4 is a cross-sectional view showing a pointer conducting device according to a specific example of the present invention.

[Explanation of sign]

1 Pointer continuity device 2 hands (hour hand) 3 pointers (minute hand) 4 Pointer pipe (hour hand pipe) 4a step 5 Pointer pipe (minute hand pipe) 5a step 6 contact plates 7 coil spring 8 coil springs 9 coil spring 10 coil spring 11 second hand 11a Second hand support end 12 second hand pipe 21 Conductive part 21a Conductor rod 22 Conductive part 22a Conductor rod 23 insulated rod 31 Conductive part 31a Conductor rod 32 Conductive part 32a conductor rod 33 insulated rod 61 Conductive part 61a Terminal part 62 Conductive part 62a terminal part 63 insulated rod

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G04B 19/30 G04G 1/00 G01D 11/28 G04C 3/00

Claims (3)

(57) [Claims] 1. A pointer conduction device for electrically connecting a conductive portion of a pointer and a conductive portion outside the pointer, wherein a coil spring made of a conductor is interposed between the both conductive portions, and the coil spring is provided. Of the coil spring and one or both of the conductive portions are in sliding contact with each other, and the coil spring is
A pointer conduction device characterized by being attached to the outer circumference of a pointer pipe that supports the pointer . 2. The conductive portion projects toward the coil spring.
3. The pointer conduction device according to claim 1 , further comprising a protruding portion . 3. The conductive part and the conductive part of another pointer are electrically charged.
The pointer conduction device according to claim 1 or 2 , characterized in that they are electrically connected.