JPS62239080A - Timepiece having extending and contracting function of hand - Google Patents

Abstract

PURPOSE:To extend or contract one end on the side opposite from the other end of an indicating hand continuous with a cam part by forming the indicating hand in such a manner that the other end of the indicating hand slides cooperatively with the cam part as the revolving shaft of the indicating hand rotates. CONSTITUTION:The belt-like indicating hand 7 consisting of a freely bendable sheet material such as thin stainless steel sheet is freely slidably mounted through a holding part 32 and a holding part 33 to the revolving shaft 31. The one end 7a of the indicating hand 7 is led out to the dial side having an elliptical shape. On the other hand, an engaging member 71 formed at the other end 7b is freely slidably connected with the cam part 6. The revolving shafts 31, 41 are driven by a driving power device 2 in a body 1 and the long hand 3 and short hand 4 connecting thereto are respectively driven. The member 71 moves along the cam part 6 and the indicating hand 7 connecting thereto slides in the revolving shaft 31 so that one end 7a on the dial side moves in and out in the directions opposite from the movement of the member 71. As a result, the one end 7a of the hand 7 projects to the max. position at 12 o'clock and 6 o'clock and retracts to the min. position at 3 o'clock and 9 o'clock. The indicating hand 7 is thus extended and contracted to meet the peripheral edge part of the dial.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a timepiece equipped with hands such as an hour hand, 2 minutes hand, 2 second hand, etc., and particularly when the display plate is formed into an oval shape or other irregular shape other than a circle, at least The present invention provides a structure in which the tip of one pointer expands and contracts in accordance with the display position on the peripheral edge of the display board.

[Conventional technology]

Conventionally, hands such as the hour hand, 9 minute hand, 2 second hand, etc. of a clock have always been formed to have a constant length.

[Problem that the invention seeks to solve]

However, according to the structure of the conventional watch mentioned above, if the display board is circular, the positional relationship between the tip of the pointer, which moves in a circle, and the letters arranged on the circumference of the display board on the concentric circle is always constant. However, if the display board is made into a rectangular or oval shape due to design requirements, the distance between the letters and the tip of the pointer varies depending on the time, which not only looks unnatural but also makes it difficult to see. was. In addition, because the length of the pointer was always the same, there was a tendency for the design to lack variety and lack interest.

[Means for solving problems]

The present invention eliminates the drawbacks of the conventional type, and provides an hour hand and a five-minute hand provided on the display panel side of a clock.

The rotating shaft of at least one of the hands, such as a second hand, is formed hollow, and a pair of holding parts protruding substantially perpendicularly to the same axis is formed, while a cam part is formed on one side of the main body of the watch. A display pointer is slidably installed with one end led out to the display plate side from one of the holding parts through the hollow rotating shaft and the other holding part, and the other end of the display pointer is attached to the cam part. It is a combination of things.

[Effect]

Since the present invention has the above-described configuration, as the rotation axis of the display pointer rotates, the other end of the display pointer slides in conjunction with the cam part, and It can be expanded and contracted.

〔Example〕

The present invention will be described below with reference to an embodiment shown in the drawings. In Fig. 1, reference numeral 1 denotes the main body of a watch. The main body 1 is formed into a box shape, and inside the main body 1 there is a battery and other power sources, and a driving motor such as a motor. A power unit 2 of the watch, which includes devices, gears, etc., is installed inside the watch. On the output side of the driving power unit 2, the long hand 3 for displaying the minutes and the short hand 4 for displaying the hours are linked with rotating shafts 31 and 41. In this case, the rotating shaft 41 of the short hand 4 is formed hollow, and the rotating shaft 31 of the long sword 3 is rotatably installed inside the rotating shaft 41, and the same plane tsumugi 31 is further formed hollow. At the same time, holding portions 32 and 33 of a required length are formed coaxially with each other and protrude approximately at right angles.

FIG. 2 shows an example of the display board 5 installed on the front side of the main body 1. In this case, the display board 5 is formed in an oval shape, and the time is displayed on the periphery of the display board 5. Letters are arranged, and the interval between 12 o'clock and 6 o'clock is larger than the interval between 3 o'clock and 9 o'clock. A cam portion 6 is formed on the back side of the main body 1 in correspondence with the display plate 5, as shown in FIG.

That is, if the display plate 5 is oval, as shown in FIG. 3, the cam portion 6 is formed with oval grooves or protrusions that are shifted in phase by approximately 90 degrees.

However, as shown in FIG.
22 times eave rotation axis 31. A band-shaped display pointer 7 made of a flexible plate material such as a thin stainless steel plate is slidably installed through the holder 3, and one end 7a of the display pointer 7 is led out to the display plate 5 side, while the other end 7b is formed. The engaging member 71 is slidably linked to the cam $6.

With the above configuration, the rotary shaft 31.41 is driven by the power device 2 in the main body 1, and the long hand 3 and the dagger 4 connected thereto are respectively driven. The engaging member 71 engaged with the cam part 6 moves along the cam part 6, and the display pointer 7 connected thereto slides within the rotating shaft 31 and leads out to the display board 5 side at one end 7a.
moves in and out in the opposite direction to the movement of the engaging member 71 on the cam portion 6 side.

As a result, one end 7a of the display pointer 7 protrudes to its maximum position at 12 o'clock, 6 o'clock, and 3 o'clock.

At 9 o'clock, it is retracted to the minimum position, and the display pointer 7 can always be expanded or contracted in accordance with the periphery of the display @5.

FIG. 4 shows another embodiment, in which a roller 72 is installed on the engaging member 71 that engages with the cam portion 6, and the rotating shaft 31 and the holding member s32 and 33 are connected to each other. A roller 34 is installed at each bent portion, thereby minimizing the frictional resistance when the display pointer 7 slides.

Also, as shown in the figure, the cam portion 6 is formed to protrude in the shape of a rib, and the engaging member 71 is formed with a groove 6a that engages with the cam portion 6.

FIG. 5 shows another embodiment, in which the protruding direction of the holding part 32 and the holding part 33 with respect to the rotating shaft 31 is set at 9.
The display pointer 7 is formed with a 0 degree phase shift and is formed so that the display pointer 7 is twisted 90 degrees within the rotating shaft 31. By forming it in this way, the display pointer 7 and the back side of the main body 1 The relative positions of the cam portions 6 to be formed can be substantially matched.

FIG. 6 shows another embodiment, in which an arm 35 is provided at the end of the rotating shaft 31, and an auxiliary arm 73 provided with the engaging portion 71 is linked to the arm 35. The other end 7] of the display pointer 7 is linked to the auxiliary arm 73. With this configuration, the cam portion 6
The movement operation of the display folding 7 can be performed more smoothly.

FIG. 7 similarly shows another embodiment, in which -
The cam portion 6 shown in FIG. 6 is formed into a rib shape, and a pressing member is provided between the holding portion 33 and the auxiliary arm 73 having the engaging member 71 in order to keep the engaging member 71 in constant contact with the inner side of the cam portion 6. It is equipped with a spring 74a.

In FIG. 8, an engaging member 71 is directly abutted on the outside of the cam portion 6, and in this case, a tension spring 74b is installed on the engaging member 71.

FIG. 9 similarly shows another embodiment, in which a connecting member 75 in which a large number of beads are passed through a string is installed in the rotating shaft 31 and the holding portions 32 and 33. By configuring in this way, the frictional resistance during sliding is reduced.

Here, the same effect can be obtained if the connecting member is made of a soft material whose cross section continuously repeats large and small shapes.

FIG. 10 shows another embodiment, in which a pulley 76 is provided on the engaging member 71 side and the other end 7b of the display pointer 7 is linked to the pulley 76, whereby the cam portion The stroke in and out of one end 7a of the display pointer 7 is doubled for the deviation of 6.

FIG. 11 shows another embodiment, in which pulleys 77, 77 are provided within the rotating shaft 31, and the holding portion 32.
A wire 78 is connected to the engaging member 71 and the display pointer 7 installed on the display pointer 7, and the return spring 7 is attached to the display pointer 7.
It is made by linking 9.

Fig. 12 shows various embodiments of the above-mentioned display board 5, in which C in the figure is formed in a heart shape, d in the figure is a square, and e in the figure is formed in an upward %D shape. The main part shape of the cam part 6 formed on the back side of the main body 1 for operating the display pointer 7 is shown by a chain line.

FIG. 13 shows another embodiment, in which a stepped portion 51 is formed in a part of the display board 5, and a first step is formed on the back side of the main body 1.
As shown in FIG. 4, a spiral cam portion 6 is formed.

In order to keep the engaging member 71 in constant contact with the inside of the cam portion 6, a pressing spring 74a is installed at the other end 7b of the display pointer 7 protruding from the holding portion 33. Therefore, when the display pointer 7 rotates, the pressure on the suppressing spring 74a installed at the other end 7b is gradually strengthened by the cam portion 6, and elastic force is accumulated, and the other end 71]
When the spring 74a passes through the rear end 6c of the cam portion 6, the spring 74a
is pressed outward and instantly engages with the tip 6d of the cam portion 6. One end 7 of the display pointer 7 led out to the display board 5 side
a gradually increases during one revolution, and instantly shortens after passing 12 o'clock.

FIG. 15 similarly shows a case in which the display plate 5 is formed by discontinuous curves at four locations, and the chain line in the figure shows the shape of the cam portion 6 formed on the back side of the main body 1.

FIG. 16 shows another embodiment in which step portions 51 and 52 are alternately formed in opposite directions on the display board 5, and the back side of the main body 1 thereof has no markings as shown in FIG. A cam portion 6 is formed of continuous cam portions 6i and 62. Between the cam parts 61 and 62, two sets of wire springs 63 and 64 are connected to shafts Q t p to assist the movement of the engaging member 71.
The engaging member 71 is guided by these springs 63, 64 to form a discontinuous cam portion 61, 62.
It is designed to move between

That is, the engaging member 71 that slides on the cam portion 61 is moved from the middle of the cam portion 61 by the wire spring 63.
It slides while being biased in two directions.

and the tip 61 of the cam portion 61. When it passes through a, it is pressed in the direction of the cam portion 62 by the wire spring 63 and engages with the rear end portion 62I of the cam portion 62 (the engaging member 71 moves in the direction shown by the arrow). Furthermore, the engagement member 71 that slides on the cam portion 62 slides while being urged toward the cam u61 by the wire spring 64 from the middle of the cam portion 62, and when it passes the tip 62a of the cam portion 62, the wire spring 64 is pressed in the direction of the cam part 61, and the cam part 6
1. The rear end portion 61)+ of In this way, one end 7a of the display pointer 7 is set between 3 o'clock and 6 o'clock and between 9 o'clock and 12 o'clock.
Let it be longer between 12:00 and 3:00,
You can shorten the time between 6:00 and 9:00 (
(not shown).

In this way, in addition to forming the display board 5 into an arbitrary shape,
As shown in Fig. 18, if the display pointer 7 is not retracted, obstacle protrusions A, B, and C are formed on the display board 5, which will collide with the display pointer 7, thereby making the viewer feel a sense of danger of collision. It may be configured as follows.

Furthermore, as shown in FIG. 19 or 20, the cam portion 6 is formed at one location of the cam portion 65, 66, and the long hand 3 and short hand 4 are formed as display hands 7 and 8, respectively, and the respective ends The engaging member 71.81 formed on the cam portion 65.
66, the long hand 3 and the short hand 4 can be expanded and contracted at the same time.

〔Effect of the invention〕

In the present invention, since the display pointer can be expanded and contracted arbitrarily, the display pointer can be moved along the periphery of the display board even if the shape of the display board is This has the effect that a sophisticated watch can be provided by expanding and contracting the display pointer independently.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view of the main parts of a timepiece showing one embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a rear view thereof, and Fig. 4 is a main part of a timepiece showing another embodiment. Cutaway side view, Figures 5 and 6
Figures 7 and 8 are rear views of the watch body showing other embodiments, Figures 9, 10, and #11 are cutaway side views of main parts of the watch body showing other embodiments, and Fig. 12 is a front view of the main part showing various embodiments of the display board of a clock, Fig. 13 is a front view of the main part of the display board of the clock showing another embodiment, and Fig. 14 is a rear view thereof.
15 and 16 are front views of main parts of the display board of a watch showing another embodiment, FIG. 17 is a rear view of FIG. 16, and FIG. 18 is a main part of the main body of a watch showing another embodiment. Part perspective view, Fig. 19,
FIG. 20 is a cutaway side view of a main part of a watch body showing another embodiment. 1...Body 2...Power unit @ 3...Long hand 4...
・Hour hand 5...Display plate 6...Cam part 6a...Groove 7...Display pointer 7a...One end 7b...Other wh
8... Display pointer 31.41... Rotating shaft 32.33... Holding part 34
...Roller 35...Arm 51.52...Step part 61. , 62...cam part 6
3.64...Wire spring 65.66...Cam part 71...Engagement member 72...
- Roller 73... Auxiliary arm 74a... Suppression spring 74b... Tension spring 75... Connection member 76.77... Pulley 78...
Wire 79...Spring Figure 1 Figure 2 Figure 6 Force arm part Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 (C) (e) Figure 12 (d) Figure 13 Figure 15 Figure 18 Figure 20

Claims (2)

[Claims] (1) The rotating shaft of at least one of the hour, minute, second, and other hands provided on the display panel side of the watch is formed hollow, and a pair of holding portions are formed that protrude approximately perpendicularly to the same axis. On the other hand, a cam part is formed on one side of the main body of the watch, and a display pointer is slidably installed with one end led out to the display plate side from one holding part through the hollow rotating shaft and the other holding part. A timepiece having a pointer expansion and contraction function, characterized in that the other end of the display pointer is linked to the cam section. (2) The extendable and retractable pointer according to claim 1, in which the rotating shaft of the second hand is formed hollow and a display pointer is installed therein, and the cam portion is formed on the back side of the main body. A watch with functions.