JPH0643973Y2 - Spring operating device for switches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a spring operating device for opening and closing a power switch.

(Prior Art) FIGS. 5 to 8 show a configuration example of a conventional spring operating device and a natural opening / closing lock (hereinafter referred to as a locking device).

As for the operation of the operating device, the rotation of the electric motor 1 is reduced by the speed reducer 2 and the spring 6 is stored via the drive lever 3 to the spring lever 4 connected by the cams 5a and 5b. When the spring 6 stores energy, the cam 8 and the catch 9a, which are integrated with the main shaft 7, mesh with each other.
The rotation is locked. As the rotation of the drive lever 3 progresses, the catch release pin 11 provided on the drive lever 3 engages with the cam 8 by the lock spring 10a.
Release a and make the spindle 7 free to rotate. When the release of the spring 6 starts, the clutch 12 connects the main shaft 7 and the spring lever 4 and the operating lever 13 that is integral with the main shaft 7 rotates to operate the operating rod 14.
The movable rod 15 of the switch is operated via.

After the spring 4 is released, the catch 9b at the symmetrical position is locked by the lock spring 10.
By b, it meshes with the notch of the cam 8 and locks the free rotation of the main shaft.

(Problems to be solved by the invention) However, the above-mentioned conventional locking device has a catch release pin.
Since the operation of 11 is slow, it is difficult to adjust the timing of releasing the catch 9a.
When is connected, the main shaft 7 is locked, so that the operation of the spring lever 4 and the drive lever 3 may stop and fall into an inoperable state. Therefore, the catch must be released before the spring 6 is released.

However, after releasing the catch 9a, until the spring 6 is released, the main shaft 7
Is free to move, especially when operated by the manual handle 21, the rotation speed is slower than the rotation by the electric motor, and the spring 6
Since the time until the energy storage is completed becomes long, the movable rod 15 may move in advance due to the weight of the switch movable rod 15 itself, resulting in malfunction.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a safer operating device that can perform a reliable operation.

[Constitution of device]

(Means for Solving the Problems) In the operating device according to the present invention, the lock device portion catch is released by the urging force of the spring.

(Operation) As a result, the free state of rotation of the main shaft during spring accumulation disappears, and the possibility of malfunction is eliminated.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a block diagram of the operating device, and FIGS. 2 to 4 are partial detailed views of the lock device in operation.

In FIG. 1, the points different from the conventional example shown in FIG. 5 are mainly only the lock device section, and therefore the following description will be focused on the lock device, and the other configurations are the same as the conventional example, and therefore overlap. The description is omitted.

FIG. 2 shows the state of the lock device when the operation is completed. In this state, the main shaft 7 has a catch pin 18a provided on the clutch 17.
The main shaft 7 by entering the yard provided in the catch 16a
The rotation of the clutch 17 that is integrated with the lock is locked.

FIG. 3 shows the locking device in operation. Accumulation of the spring 6 is started by the spring lever 4, and when the dead point is passed, the spring 6 is released. At this time, the catch 16a that locks the rotation of the main shaft 7 is released by the catch release pin 19a provided on the spring lever 4, so that the main shaft 7 is freely rotated and transmitted to the main shaft 7 via the spring lever 4 and the clutch 17. Operate the switch. After the spring is released, as shown in FIG. 4, the rotation of the main shaft 7 is locked by the catch 16b and the catch pin 18b at symmetrical positions.

[Effect of device]

According to the present invention described above, since the lock device catch 16 for locking the main shaft 7 is always released after the spring 6 is released, the main shaft 7 does not come into a free operation state. Since the malfunction of the movable rod 15 due to the preceding motion does not occur, a more reliable spring operating device can be obtained, and the catch release pin operates integrally with the spring lever 4 to manage the catch 16 release timing,
This has the effect of facilitating adjustment.

[Brief description of drawings]

FIG. 1 is a perspective view showing a spring operating device according to an embodiment of the present invention, FIG. 2 is a partial detailed view of the lock device of FIG. 1 in a completed operation state, and FIG. 3 is a lock device of FIG. FIG. 4 is a partial detailed view of a state in which the lock device of FIG. 1 has completed the next operation, and FIG. 5 is a perspective view showing an example of a conventional spring operating device. FIG. 7 is a partial detailed view of the lock device of FIG. 5 in an operation completed state, FIG. 7 is a partial detailed view of the lock device of FIG. 5 when it is released, and FIG. 8 is a next operation of the lock device of FIG. FIG. 9 is a partial detailed view of an operation completed state in which the operation of FIG. 1 ... Electric motor, 2 ... Reduction gear, 3 ... Drive lever, 4 ... Spring lever, 5 ... Cam, 6 ... Spring, 7 ... Spindle, 8 ... Cam, 9,16 ... Catch, 10,20 …… Lock spring, 11,19 …… Catch release pin, 12,17 …… Clutch, 13 …… Operating lever, 14 …… Operating rod, 15 …… Movable rod, 18 …… Catch pin, 21… … Manual handle.

Claims (1)

[Scope of utility model registration request] 1. A spring operating device for a switch, which drives a movable part of a switch by the released force of a stored spring, and a joint which is integrated with a main shaft and has a pair of main shaft holding pins on its outer peripheral part, and the main shaft. A spring that locks the holding pin in the rotation direction of the main shaft and a lever that is directly connected to the spring and that has a catch release pin for the catch to unlock the main shaft holding pin. The spring operating device for a switch, comprising a natural opening / closing lock device configured to release the catch after the start of the release of the spring and then connect the lever and the main shaft.