JPH0640891U - Power supply device for the pointer with load - Google Patents

Abstract

(57) [Abstract] [Purpose] It enables the setting of analog alarms such as alarm clocks that have a luminous body on the pointer, and reduces the burden on the pointer for supplying power to the luminous body. [Construction] A peripheral wall portion 1a is provided on the front surface of a timepiece mechanical body K, and a band-shaped conductor 3 is provided inside thereof. A pointer needle 6, an hour hand 9, a minute hand 11, and a second hand 13 are attached to the pointer shaft 2. A conductive minute hand contact piece 1 provided on the back side of the minute hand 11.
Spring pieces 15b and 16b provided integrally with
A rotating contact piece 20 is provided for each. The rotating contact piece 20 rotates while elastically contacting the strip conductor, and the minute hand contact piece 1 from the external power supply is rotated.
Power is supplied to the minute hand load (EL) 17 through 5, 16 to cause the EL to emit light. Further, the electric power is supplied to the ring-shaped conductors 22, 2 provided on the upper surface of the contact base 21 of the hour hand 9 through the contacts 15a, 16a integrated with the minute hand contact pieces 15, 16.
3 is supplied to the hour hand contact pieces 25 and 26, and power is supplied to the hour hand load (EL) 24.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a so-called load pointer power supply device that supplies power to a pointer provided with a load such as a light emitter so that the time can be visually recognized even in a dark place such as an alarm clock. Is.

[0002]

[Prior art]

 It has been widely practiced in the past to illuminate the hands of alarm clocks and the like so that the time can be recognized even in the dark, but light-emitting diodes (LEDs) and electroluminescence (LEs) are used as light-emitting bodies. Widely adopted. In order to supply electric power to the load of the pointer, there are various restrictions such as the frictional resistance of the pointer and the installation location of the conductor.

The applicant of the present invention has previously made some proposals as a device for supplying electric power to a pointer with a load (for example, Japanese Patent Application Laid-Open No. 2-80995), but as a schematic configuration as an example of these proposals, There are the following things.

A contact base is provided around the front surface of a pointer bearing protruding in the center of the front surface of the timepiece machine body. The contact base is penetrated forward and backward, and the front end of the contact base is covered with a ring-shaped rear end of a fixed conductor. The lead wire is soldered so that the load power can be supplied externally. An hour hand, which is rotated by a pointer shaft, is located just in front of the fixed conductor, and a pair of electrically conductive contact pieces are attached to the back surface of the hour hand. On the back side of each contact piece, a contact integrally formed with the contact piece is bent obliquely, and each contact is elastically contacted with a fixed conductor. An EL is mounted as a load in a predetermined area on the back surface of the hour hand. A predetermined area of the hour hand is hollowed out, and the upper surface of the EL is exposed to the front surface in this hollowed-out area and is visible from the front.

A contact stand is also provided on the front surface of the attachment portion of the hour hand, and the hour hand and the contact stand can be integrally rotated. Like the fixed contact block, the contact block is provided with a ring-shaped conductor, and the ring-shaped conductor is soldered to the contact piece.

Similarly, the minute hand located in front of the hour hand is also provided with a pair of contact pieces, and the respective contacts integrated with the minute hand make elastic contact with the ring-shaped conductor provided on the hour hand. Like the hour hand, the minute hand is also provided with an EL load, and electric power is supplied to the load through the contact piece so that the EL light is emitted.

[0007]

[Problems to be solved by the device]

 The above-mentioned conventional technique has an excellent effect in that the electric power can be supplied to the load of the pointer with a simple configuration. However, the contact between the contact bent on the back of the hour hand and the ring-shaped fixed conductor on the contact stand protruding from the front of the dial causes power to be supplied to the load of the pointer. It is difficult to provide a reference needle between the and. This makes it impossible to set analog settings for alarm devices such as alarm clocks, which is a constraint on the design of the reference device.

An object of the present invention is to provide a power supply device for a pointer with a load, which eliminates the obstacle for providing a reference needle and enables analog setting of an alarm device.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, a power supply device for a pointer with a load according to the present invention comprises a circumferential wall portion formed concentrically with a pointer shaft on the front surface of a timepiece machine body, and an inner circumferential surface of the circumferential wall portion. A strip-shaped conductor that is connected to an external power source, a conductive rotating contact piece that is elastically contacted with the strip-shaped conductor and is movable along its inner peripheral surface, and a support for this rotating contact piece. Then, the conductive minute hand contact piece provided on the back surface of the minute hand, the minute hand load electrically connected to the minute hand contact piece and provided on the minute hand, and the minute hand contact piece partially bent to the back side. And a ring-shaped conductor which is attached to a contact stand provided on the upper surface of the hour hand and is provided so as to be electrically conductive by the contact point of the minute hand contact piece being elastically contacted. Also, on the back surface of the hour hand, the hour hand contact piece is provided so that each ring conductor and the hour hand load can be electrically connected, and the hour hand load that is electrically connected to the hour hand contact piece is provided on the hour hand. And a conductive spring piece that is integrally provided on one of the minute hand contact piece and the hour hand contact piece and that supports the rotating contact piece.

[0010]

[Action]

 Since the pointer with load supplies electric power from an external power source through a rotating contact piece that is elastically contacted with a strip conductor provided on the circumferential wall by a spring piece, it receives power from the back surface of the hour hand. It is no longer necessary to provide a conductive device. The rotating contact piece reduces the frictional resistance generated when the pointer rotates, and the spring piece elastically contacts the rotating contact piece with the strip-shaped conductor and conducts itself as a conductor to the contact piece to ensure power supply. Electrical connection between the minute hand contact piece and the hour hand contact piece is made by contact between the ring-shaped conductor and the contact bent on the back surface of the minute hand contact piece.

[0011]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an essential part of an embodiment of the present invention. A timepiece mechanical body K is attached to the central rear surface of a frame body 1 having a dial D attached to the front surface. A pointer shaft 2 is provided at the center of the front surface of the timepiece mechanical body K so as to penetrate the dial D from the back surface, and a circumferential wall portion 1a of the frame body 1 is formed concentrically with the pointer shaft 2. The circumferential wall portion 1a vertically rises the entire circumference of a disc-shaped dial plate receiving portion 1b around the pointer shaft 2 by a predetermined height, and its front end portion further expands outward to form an outer wall 1c. There is.

Inside the circumferential wall portion 1a, a pair of strip-shaped conductors 3, 3 are provided over the entire circumference. The strip-shaped conductor 3 is made of a highly conductive material such as a copper strip, and the connecting pieces 3a, 3a integral with the strip-shaped conductor 3 are provided outside the frame 1 from the holes 1d, 1d provided in the circumferential wall 1a. The lead wires 4 and 4 are connected to each other and electrically connected to an external power source.

The pointer shaft 2 has a second hand shaft 2a in the center, a minute hand pipe 2b around the second hand shaft 2a at a predetermined interval, an hour hand pipe 2c on the outer circumference, and a reference pipe 2d on the outer circumference so as to be independently rotatable. It consists of things. A reference hand 6 is press-fitted into the reference pipe 2d, and an hour hand 9 is attached to the hour hand pipe 2c via a hook 8. Similarly, a minute hand 11 is attached to the minute hand pipe 2b via a rotary hook 10 and a second hand 13 is attached to the second hand shaft 2a via a rotary hook 12.

As shown in FIG. 2, the minute hand 11 is composed of a circular mounting portion 11a and a needle portion 11b having a sharpened tip by extending a part of the mounting portion, and a central portion of the needle portion. Has a hole 11c for exposing the EL, which will be described later, to the front surface.

As shown in FIG. 3, on the back surface of the minute hand 11, an insulating plate 14 is attached to almost the entire surface except the hole portion of the pointer shaft 2, and a pair of conductive minute hand contact pieces is attached to the outside thereof. EL17 which comprises 15, 16 and a load is provided. The minute hand contact pieces 15 and 16 are provided with bent contacts 15a and 16a, respectively, at portions facing the mounting portion 11a of the minute hand 11, and are provided with an EL exposure hole portion 11c at the center of the needle portion 11b. A certain portion is notched so as not to be blocked, and spring pieces 15b and 16b are provided at the tip. The connection electrodes 17a and 17a of the EL 17 are conductively connected to the minute hand contact pieces 15 and 16 by solders 15c and 16c.

Although the structure of EL17 is not shown, as is conventionally known, a transparent electrode formed on a transparent electrode base film is provided with a light emitting layer containing zinc sulfide containing an activator such as copper or chlorine. A back electrode is formed on the other surface of the light emitting layer through an insulating layer such as barium titanate, sandwiched by a water catching film, and the outside of the back electrode is made of polychlorinated trifluoride constituting the top and bottom package films. The outer peripheral part of a moisture-proof film such as ethylene oxide is sealed with a hot-melt adhesive. The luminescent color of the luminescent layer is determined by the activator such as copper and chlorine, and blue, orange, green, pink and white are often used.

As shown in FIG. 1, in the spring pieces 15b and 16b described above, the tips of the minute hand contact pieces 15 and 16 are bent at right angles, and the tips thereof are bent at right angles to move in the right angle direction. It is stretched to form an L-shape. Rotating contact pieces 20, 20 are pivotally supported at the tip ends of the spring pieces 15b, 16b via support shafts 19, 19, respectively. The rotating contact piece 20 is made of a conductive material such as copper, and can be electrically supplied to the minute hand contact pieces 15 and 16 from an external power source by elastically contacting the strip conductor 3.

As shown in FIG. 1, the hour hand 9 has a shorter overall length than the minute hand 11 and is made slightly wider than the width of the minute hand (see FIGS. 4 and 5). A non-conductor contact base 21 is attached, which has a ring shape slightly larger than the shaft hole. An inner ring-shaped conductor 22 is formed on the upper surface of the contact base 21 so as to surround the pointer shaft hole, and an annular ring surrounding the inner ring-shaped conductor with a predetermined space therebetween. An outer ring-shaped conductor 23 is attached. Connection pieces 22a and 23a are bent on the lower surfaces of the ring-shaped conductors 22 and 23, respectively. When the ring-shaped conductors 22 and 23 are mounted on the hour hand 9, the connecting pieces 22a and 23a are of such a length that they project from the lower surface of the hour hand 9.

As shown in FIG. 4, an exposure hole 9c of the EL 24 is provided in the needle portion 9b of the hour hand 9, and the EL 24 attached to the back side of the needle portion is visible from the front.

As shown in FIG. 5, a pair of conductive hour hand contact pieces 25, 26 are attached to the back side of the hour hand 9. An insulating plate 27 is interposed between the back surface of the hour hand 9 and the hour hand contact pieces 24, 25 to electrically insulate each of them.

The connection electrodes 24a and 24a of the EL 24 and the hour hand contact pieces 25 and 26 are connected by solders 25c 1 and 26c 2. The tip ends of the connection pieces 22a and 23a of the ring-shaped conductors 22 and 23 are also soldered to the hour hand contact pieces 25 and 26 by solders 25c and 26c, respectively.

As shown in FIG. 1, contacts 15a and 16a integrated with the above-mentioned minute hand contact pieces 15 and 16 are elastically contacted with the upper surfaces of the ring-shaped conductors 22 and 23, respectively, and the minute hand contact piece 15 from the external power source is connected. , 16 and the hour hand contact pieces 25, 26 can supply power to the load 24 of the hour hand 9.

Next, the operation will be described. The electric power guided from the external power source to the strip conductors 3 and 3 via the lead wires 4 and 4 passes from the minute hand contact pieces 15 and 16 through the rotating contact pieces 20 and 20 and the conductive spring pieces 15b and 16b. It is supplied to the load 17 of the minute hand 11. The electric power that causes the load (EL) 17 of the minute hand 11 to emit light is conducted to the load (EL) 24 through the ring-shaped conductors 22 and 23 via the contacts 15a and 16a and further to the hour hand contact pieces 25 and 26. It is supplied and makes it emit light.

When the pointer rotates, the rotating contact pieces 20, 20 move while rolling while being in elastic contact with the strip conductors 3, 3 by the spring pieces 15b, 16b. Since the rotating contact pieces 20 and 20 and the strip conductors 3 and 3 are in rolling contact, the coefficient of friction is extremely small, which reduces the burden of the pointer and ensures reliable conduction between them. . In addition, the length of the reference hand 6 is shorter than the turning radius of the spring pieces 15b and 16b, so there is no risk of contact with the reference hand during rotation, and the alarm time setting operation by the reference hand will not be hindered. Therefore, the analog setting of the alarm is possible.

In the above-mentioned embodiment, the spring piece and the rotary contact piece are provided on the minute hand. However, this is provided on the hour hand, and first, after supplying the power to the load of the hour hand, the ring-shaped conductor and the contact point are used. It is also possible to supply electric power to the load (EL) of the minute hand via the minute hand contact piece.

[0026]

【effect】

 As described above, the present invention is adapted to receive electric power from the outside to the load of the pointer through the rotating contact piece supported by the spring piece integrated with the conductive contact piece provided on the pointer. Therefore, it is not necessary to provide a structure for supplying power around the pointer shaft. For this reason, an indicator needle can be provided, which enables analog alarm settings.

In addition, while the rotating contact piece is elastically contacted with the strip-shaped conductor provided on the circumferential wall portion, while the pointer is rotated, power is supplied from the outside, so that the pointer has an extremely small friction resistance. Since it only works, the rotation of the pointer is smooth, and since the rotating contact piece is elastically contacted with the strip conductor by the spring piece, there is an effect that power can always be reliably supplied to the load. .

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of the present invention.

FIG. 2 is a partially cutaway enlarged plan view of a minute hand.

FIG. 3 is a partially cutaway enlarged plan view showing the back side of the minute hand.

FIG. 4 is a partially cutaway enlarged plan view of an hour hand.

FIG. 5 is a partially cutaway enlarged plan view showing the back side of the hour hand.

[Explanation of symbols]

 1a Circular wall part 2 Pointer shaft 3 Band conductor 9 Hours hand 11 minutes hand 15, 16 minutes hand contact piece 15a, 16a contacts 15b, 16b spring piece 17 minutes hand load 20 rotating contacts 21 contact block 22, 23 ring conductor 24 hour hand load 25,26 Hour hand contact piece K clock mechanical body

Claims (1)

[Scope of utility model registration request] 1. A circumferential wall portion formed concentrically with a pointer shaft on a front surface of a timepiece mechanical body, a strip-shaped conductor provided on an inner circumferential surface of the circumferential wall portion, and connected to an external power source; A conductive rotating contact piece elastically contacting the conductor and movable along the inner peripheral surface of the conductor, a conductive minute hand contact piece provided on the back surface of the minute hand, and the conductive minute hand contact piece provided on the minute hand. The minute hand load that is electrically connected to the minute hand contact piece, the contact that partially bends the minute hand contact piece on the back side, and the contact block that is installed on the upper surface of the hour hand are installed. A ring-shaped conductor that can be elastically contacted, an hour hand contact piece that is provided on the back surface of the hour hand so as to be electrically conductive with the ring conductor, and an hour hand contact piece that is provided on the hour hand and that is electrically connected to the hour hand contact piece. Integrated with either the minute hand contact piece or the hour hand contact piece. And a conductive spring piece supporting the rotary contact piece, and a power supply device for a pointer with a load.