JPS6154188B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lock mechanism for preventing an empty escape in a full-body swing clock driven by a power source such as a mainspring.

2. Description of the Related Art In general, an integrated pendulum clock in which both a pendulum part and a timepiece body swing around a fulcrum formed between the timepiece body and a pendulum part is well known. In conventional full swing clocks, the power is transmitted to the escape wheel using a power source such as a mainspring, and the swing rod is equipped with a small pendulum-shaped weight on the pallet leg that protrudes from the pallet meshing with the escape wheel. By hanging it, the small pendulum-shaped weight moves in conjunction with the left and right pendulum movements of the clock body and pendulum part, and the pendulum movement of the overall pendulum clock is caused by the rocking biasing force received from the escape wheel of the pallet pallet. It was something that lasted. In this device,
The drawback was that when the pendulum oscillation of the clock was stopped, the pallet wheel and escape wheel would escape, causing the mainspring to unravel in a short period of time. In addition, even in a full-body pendulum clock that has a mechanism that automatically winds up the mainspring by driving a motor using a power source such as a battery, when the pendulum vibration is stopped, the escapement will be between 5 and 6 times the normal time.
The problem was that empty escapement occurred six times as fast, significantly shortening battery life.

The present invention has solved the above problem, and is capable of stopping the pendulum vibration in an integrated swing clock in which the mainspring is wound manually, and in an integrated swing clock in which the main spring is automatically wound by a motor driven by a power source such as a battery. The present invention provides a locking device that prevents a dry escape.

In order to achieve the above object, the present invention provides a weight on the pallet wheel meshed with the escape wheel, and the weight moves in conjunction with the left and right pendulum movements of the watch body and the pendulum part, and the weight moves from the escape wheel of the pallet wheel. In an escapement device for a full-body swing clock, in which both the pendulum section and the clock body continue to swing around a fulcrum formed between the clock body and the pendulum section due to the rocking biasing force received, a weight is attached to the lower end. The clock has a lock lever that is capable of rocking and is linked to the rocking of the clock body and the pendulum, and a lock cam that has a cam projection and is linked to the escape wheel, so that the rocking motion of the overall swing clock is stopped. In this state, the lock lever is stopped in the direction of gravity of a weight formed on the lock lever, and at that position, the cam protrusion of the lock cam comes into contact with the lock lever to lock the escape wheel. shall be.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows a front view of a full-body swing timepiece according to the present invention, and FIG. 2 shows a back view thereof. Third
The figure shows a plan view of the main part of the present invention, and FIG. 4 shows a sectional view of the main part.

The overall swing clock according to the present invention is composed of a clock main body 2 that displays time and drives a pendulum, and a pendulum section 3, which includes a pendulum rod section 4 and a pendulum weight section 6.
It consists of The pendulum rod portion 4 is screwed to the watch body 2, and a fulcrum pin 8 is formed at its upper end. This fulcrum pin 8 is engaged with a receiver 10, and the entire body swings from side to side as shown in FIG. 1 using the tip of the fulcrum pin 8 as a fulcrum. Watch body 2
A clock movement 12 is disposed on the back side of the watch, and is driven by a battery inserted into a battery box 18. By driving the timepiece movement 12, the timepiece 14 and minute hand 16 are rotated to display the time. Further, a swinging mechanism section 20 of the total swing clock according to the present invention is disposed in the clock body 2, and is configured to operate independently of the clock operating mechanism (clock movement 12). The pendulum drive unit 20 includes an automatic power spring winding device, which drives the motor 22 periodically to wind up the spring 30. This motor 2
2 uses a battery inserted in a battery box 18 as a driving source, and a pinion 26 is fixed to a motor shaft 24 and meshes with a gear 28, and is configured to periodically rotate the gear 28 one rotation. There is.

A winding gear 32 is disposed coaxially with the gear 28, and a spring 30 is provided between the two gears, with one end locked to the gear 28 and the other end locked to the winding gear 32. The gear 28 is driven by the motor 22. As a result, the spring 30 is wound up and applies biasing torque to the hoisting gear 32. A first transmission pinion 34 is meshed with the winding gear, and a second transmission pinion 38 is meshed with the first transmission gear 36, which is coaxially fixed. Further, an escape pinion 42 is meshed with a second transmission gear 40 coaxially fixed to the second transmission pinion 38, and the power from the spring 30 is transmitted to the escape wheel 44, which is fixed simultaneously with the escape pinion 42. Further, an ankle 46 is disposed at a position where it can be engaged with the escape wheel 44, and two ankle pins 48 provided on the pallet 46 are attached to the escape wheel 44.
The escape wheel 44 is extended one tooth at a time in accordance with the swinging of the pallet pallets 46. Furthermore, a balancer 55 is fixed to the pallet stem 50 at its fulcrum position, with pallet weights 54 of equal weight attached to both ends of the pallet arm 52, and the pallet stem 50 is swingable on the mechanism support plate. It is pivoted on. Furthermore, a lock cam 60 having a protrusion 61 is loosely fitted coaxially with the escape wheel 44. A spring 62 is provided between the escape wheel 44 and the lock cam 60, and is locked at one end to the escape wheel 44 and to the lock cam 60 at the other end. Therefore, the lock cam 60 rotates in conjunction with the escape wheel 44 under normal conditions. Also, the lock lever 6 is placed in a position where it can come into contact with the lock cam 60.
4 is swingably supported on a shaft 70 which is set up from the mechanism support plate.

A lock arm 65 that engages with the protrusion 61 of the lock cam 60 is formed above the lock arm 65, and a weight 6 is formed at the lower end.
6 is fixed. And lock lever 64
The swinging in the direction of arrow B in FIG. 3 is relatively suppressed by a pin 72 that is set up from the mechanism receiving plate.

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

The driving force of the escape wheel 44 is generated by the biasing torque stored in the spring 30 due to the periodic drive of the motor 22. The escape wheel 44 is biased in the direction of arrow A in FIGS. 5 and 6 due to the transmission from the transmission tooth 40 to the escape pinion 42 to the escape wheel 44. The pendulum operation in a state where the escape wheel 44 is powered will be explained.
When the pendulum part 3 is tilted to the right as shown by the double-dot chain line × in FIG. Because it is supported, ankle 4
6 and the balancer 55 are displaced so as to maintain a balanced state due to gravity. Therefore, as shown in FIG.
The meshing state between the escape wheel 44 and the escape wheel 44 changes. Specifically, the cantilever wheel 44 is advanced by one tooth, and at this time it applies a rocking biasing force to the pallet wheel 46. The rocking biasing force applied to the pallet handle 46 acts to increase the rocking of the pendulum portion 3 in the rightward direction, and the timepiece body 2 and the pendulum portion 3 are biased to rock. In this state, the lock lever 64 is restrained from swinging in the direction of arrow B by the pin 70 that is set up from the mechanism receiving plate. Next, when the pendulum part 3 that has been swung to the right returns and is tilted to the left as shown by the two-dot chain line Y in FIG. Changes to maintain. Therefore, as shown in FIG. 6, the state of meshing between the pallet pin 48 of the pallet 46 in the balancer 55 and the escape wheel 44 changes. In other words, the escape wheel 44 is advanced by one tooth, and at this time it applies a rocking force to the pallet pallet wheel 46. In this state, the lock lever 64 is pulled in the direction of gravity by the weight 66, so its position does not change, and the watch body 2 changes its position, so it takes a relative position as shown in Figure 6. .

Also, when the whole body swing clock is rocking and the pendulum part 3 is tilted to the right as shown by the two-dot chain line X in FIG. 2, when the protrusion 61 of the lock cam 60 and the lock arm 65 of the lock lever 64 engage However, the locking force is absorbed by the spring 62 provided between the lock cam 60 and the escape wheel 44, and the pendulum portion 3 immediately swings to the left as shown by the two-dot chain line Y in FIG. Lock cam 6 to move
0 and the lock lever 64 are released. In this way, the lock cam 60 is
Even if the lock lever 64 engages with the escape wheel 44, the locking force of the lock lever 64 has no effect on the escape wheel 44. In addition, in this embodiment, as described above, a spring 6 is provided between the lock cam 60 and the escape wheel 44.
Although the escape wheel 44 and the lock cam are directly connected to each other, this can also be implemented.

Next, when the swinging of the whole body clock is stopped, the lock lever 64 is pulled in the direction of gravity by the weight of the weight 66 attached to its lower end.
The lock arm 65 stands still in the position shown in FIG. 7 and is projected to a position where it can come into contact with the lock cam 60. In this state, the escapement performs an empty escapement at a speed five to six times the normal speed, and the lock cam 60 interlocked with the escape wheel 44 rotates accordingly. Then, the protrusion 61 of the lock cam 60 and the lock arm 65 of the lock lever 64 come into contact, and the rotation of the escape wheel 44 is stopped by the locking force.

As described above, the present invention provides an integrated swing clock in which the mainspring is wound manually, and a full swing clock in which the mainspring is automatically wound by a motor driven by a power source such as a battery. can be prevented. This is especially true for full-body clocks that use a battery to operate a motor to automatically wind the mainspring.

[Brief explanation of the drawing]

FIG. 1 is a front view of a full-body swing clock according to the present invention;
FIG. 2 is its back view. Figure 3 is a plan view of the main parts, Figure 4 is a cross-sectional view of the main parts, Figures 5 and 6 are operational diagrams of the main parts during the swinging of the full-body swing clock, and Figures 7 and 8 are diagrams showing the swing of the full-body swing clock. FIG. 3 is a diagram showing the operation of main parts when the vehicle is stopped. 44...Escape wheel, 46...Ankle, 48...
...Ankle pin, 50...Ankle true, 52...
Ankle arm, 54...Ankle weight, 60...Lock cam, 61...Protrusion, 62...Spring,
64...Lock lever, 65...Lock arm, 66
... Weight, 70 ... Shaft, 72 ... Pin.

Claims (1)

[Claims] 1. A weight is provided on the pallet meshing with the escape wheel,
The weight moves in conjunction with the left and right pendulum movements of the watch body and the pendulum, and is centered around a fulcrum formed between the watch body and the pendulum by the rocking biasing force received from the escape wheel of the pallet pallet. In an escapement device for a full-body swing clock in which both the pendulum part and the clock body continue to swing, a lock lever is provided that is swingable by forming a weight at the lower end and is linked to the swinging of the clock main body and the pendulum part. , a lock cam formed with a cam protrusion and interlocked with the escape wheel, and when the rocking operation of the total swing clock is stopped, the lock lever also stops in the direction of gravity of the weight formed on the lock lever, and at that position. A locking mechanism for preventing free escape of a full-body swing clock, characterized in that a cam protrusion of the lock cam comes into contact and locks an escape wheel. 2. A locking mechanism for preventing free escape of a full-body swing timepiece according to claim 1, characterized in that an escape wheel and a lock cam interlocked with the escape wheel are interlocked via a coil spring.