JPH0435829Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a long pendulum mechanism such as an electromagnetically driven hall clock.

(Prior art) Mechanical pendulum mechanisms, such as hall clocks, that have traditionally been known use a large spring or weight as a driving source, and in recent years, pendulum mechanisms that are electromagnetically driven and used as pseudo-pendulums have become known. ing.

(Problems to be solved by the invention) However, in the former case, the driving force is sufficient but the structure is complicated, and in the latter case, the angular velocity is slow, so the electromagnetic drive part cannot be placed at the top of the pendulum, and the pendulum mechanism part It was not possible to make it more compact.
Furthermore, when it comes to long pendulums like hall clocks, the pendulum itself is heavy, so if it tilts left or right after the war, the load will be applied to one side of the fulcrum, causing the fulcrum on one side to wear out quickly or swinging to one side, which can cause failures. I was getting used to it.

(Means for Solving the Problems) Therefore, the present invention aims to solve the above problems by providing a pendulum mechanism that can be made compact with a relatively simple structure and is resistant to left and right tilting. Supported so that it can swing relative to the watch body,
The watch comprises a first swinging rod that can be driven electromagnetically, and a second swinging rod that is arranged in parallel with the first swinging rod and is swingably supported with respect to the watch body, and is formed on the first swinging rod. In the pendulum mechanism of a watch, the first swinging rod and the second swinging rod can be oscillated in conjunction with each other by connecting the acting part formed on the second swinging rod to the acting receiving part formed on the second swinging rod. a fulcrum of a first swinging rod disposed below the fulcrum of the rod; a drive pin fixed at right angles to the first swinging rod as the operating portion; and an inclination correction lever elastically fixed to the second swinging rod; a through hole provided in the inclination correction lever as the action receiving part and through which the drive pin is inserted with a predetermined clearance; It consists of stoppa and.

(Example) Fig. 1 is a longitudinal sectional view of a pendulum mechanism according to the present invention;
FIG. 2 is a front view.

The lower plate 1 is connected to the upper plate 3 from the support 2,
Holding parts 4 are provided on the left and right sides of the lower plate 1 and are fixed to the exterior 6 with screws 5.

The first support shaft 7 is pivotally supported by the lower plate 1 and the upper plate 3. A first swinging rod 9 having a magnet 8 adhesively fixed to the lower part thereof is press-fitted and fixed to the first support shaft 7.
The swinging rod 9 is arranged in parallel with a second swinging rod, which will be described later.

A drive pin 10 is installed in the first swinging rod 9 at a right angle between the first support shaft 7 and the magnet 8, and is connected to an inclination correction lever 19, which will be described later.

A notch 11 having a width slightly wider than the swinging range of the first swinging rod 9 is provided in the lower part of the upper plate 3;
The leg piece 12 made by this is bent into an L-shape toward the lower plate 1 side to form a stopper 26, which will be described later.

At the upper part of the upper plate 3, on the opposite side from the lower plate 1, bearings 14 and 15 for the second support shaft 13 are provided, which are bent into a fishhook shape. It has a large radius bearing.

A second swinging rod 16 is biased to one side of the second support shaft 13 by the elastic force of a coil spring 17. The second swinging rod 16 is elastically connected to a tilt correction lever 19 by a coil spring 18 as described above, and is provided with a vertically elongated through hole 20 that connects with the drive pin 10 with a predetermined clearance. Further, the second swinging rod 16 is provided with an escape hole 21 that does not engage with the drive pin 10 during inclination correction, which will be described later.
A hook 23 for supporting 2 is provided.

The circuit board 24 provided at the bottom of the lower plate 1 includes:
A coil 25 consisting of a detection coil and a drive coil, and electronic components (not shown) constituting a drive circuit are provided at a position opposing the magnet 8 of the first swinging rod 9.

The pendulum 22 of the present invention is a long pendulum used in a hall clock or a large wall clock, and has a longer period than a general pendulum clock.

The present invention has the above configuration, and its operation will be explained next.

First, when the pendulum 22 is manually swung, the second
An inclination correction lever 19 elastically connected to the swinging rod 16
The first swinging rod 9 starts swinging via the drive pin 10 connected to the through hole 20 of. At this time, the first support shaft 7 of the first swinging rod 9 is arranged below that of the second swinging rod 16. Therefore, the period of the first swinging rod is the same as the second swinging rod, but the swinging angle is larger, so
The speed when the magnet 8 opposes the coil 25 is increased compared to that of the second swinging rod, making it possible to generate a sufficient voltage in the detection coil. As a result, a drive panel is generated and the well-known repulsion and attraction effects continue.

Next, correction when the pendulum mechanism is installed with an inclination in the front, rear, left, and right directions will be explained using FIGS. 3 and 4.

FIG. 3 shows a state in which it is tilted by a distance toward the rear (right side of the drawing). The swinging rod 16 is pressed to one side by the elastic force of the coil spring 17 on the second support shaft 13, but since the pendulum 22 is heavy, the second swinging rod 16 and the pendulum 22 are always suspended in the vertical direction. Therefore, unnecessary load on the bearing portion of the second support shaft 13 is reduced. Also, drive pin 1
0 and the through hole 20 of the inclination correction lever are connected with a predetermined clearance, so that the first swinging rod 9
has no effect on

The same applies when the pendulum mechanism is tilted forward.

FIG. 4 shows a state in which it is tilted to the left by an amount b. Since the inclination correction lever 19 and the second swinging rod 16 are elastically connected by a coil spring 18, before swinging, they are stacked together and suspended vertically as shown in FIG. However, if you swing it while it is tilted, the first swing rod 9 will stop at the stopper 26.
Since the swinging is restricted by this, the tilt correction lever 19 connected to the drive pin 10 and the swinging rod 16 swing together with a predetermined deviation angle. Therefore, it is possible to minimize changes in the swing range of the magnet 8 with respect to the coil 25, and the pendulum 22 can continue its normal swing motion.

Furthermore, as shown in FIG. 5, if the radius of the bearings 14 and 15 of the second support shaft 13 is made sufficiently larger than the handle diameter of the second support shaft, the handle of the second support shaft 13 will be larger than the shaft diameter of the second support shaft 13. Rolling contact occurs, reducing wear on the fulcrum.

(Effect of the invention) As explained above, according to the invention, the fulcrum of the first swinging rod is placed below the fulcrum of the second swinging rod,
A driving pin fixed perpendicularly to the first swinging rod as an acting part, an inclination correction lever elastically fixed to the second swinging rod, and a driving pin provided on the inclination correction lever as an action receiving part so that the driving pin is fixed at a predetermined angle. It consists of a through hole that is inserted with a clearance, and a stopper that is disposed in the swinging direction of the first swinging rod and slightly outside the swinging range, so that the magnet and coil of the first swinging rod are The speed when countering is increased compared to that of the second swinging rod, making it possible to generate a sufficient voltage in the detection coil. This allows the electromagnetic drive section to be placed above the pendulum, resulting in a compact pendulum mechanism.

Furthermore, since it is equipped with tilt correction, it is possible to eliminate oscillation even if the camera tilts from side to side.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the pendulum mechanism according to the present invention,
FIG. 2 is a front view, FIGS. 3 and 4 are explanatory views when the pendulum mechanism is tilted, and FIG. 5 is an explanatory view showing the relationship between the bearing and the support shaft. 9...First swing rod, 10...Drive pin, 13...
... second support shaft, 16 ... second swing rod, 19 ... inclination correction lever, 22 ... pendulum.

Claims (1)

[Claims for Utility Model Registration] A first swinging rod that is swingably supported relative to the watch body and can be driven electromagnetically; The first swinging rod and the second swinging rod are connected by connecting the acting part formed on the first swinging rod and the action receiving part formed on the second swinging rod. In the pendulum mechanism of a watch, the fulcrum of the first swinging rod is arranged below the fulcrum of the second swinging rod, and the drive fixed at right angles to the first swinging rod as the acting part. a pin, an inclination correction lever elastically fixed to the second swinging rod, a through hole provided on the inclination correction lever as the action receiving part and through which the drive pin is inserted with a predetermined clearance; A clock pendulum mechanism consisting of a stopper located slightly outside the swinging range in the swinging direction of the swinging rod.