JPH02186516A - Motor-driven spring operating device - Google Patents

Abstract

PURPOSE:To prevent the re-storage after the release, and facilitate and secure the start of a driving motor, and improve the reliability of the operation of a switch by releasing one of two ratchets performing the spring storage from the ratchet through the solenoid which operates at the same time of the spring release. CONSTITUTION:A claw of a pair of ratchet 6, 7 is engaged with a ratchet 8 to rotate the ratchet 8 by starting a driving motor 1 to energize a magnet device, and a spring 20 is stored with that rotation, and a switch 21 is operated at the release time after that storage. When the driving motor 1 is stopped at that release time to weaken the magnet device 10, the claw of one ratchet is released from the ratchet 8. Consequently, the start of the driving motor at next operation time is facilitated and the storing operation of the spring 20 can be smoothly performed without the rotation of the ratchet 8 by the rotational inertia of the driving system. Thereby, the excess rotation of the motor driving unit at the release time is prevented, and an electric spring operating device having the high reliability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an electric spring operating device that operates a switch by charging and releasing energy of a spring.

(Prior Art) As is well known, in an electric spring operating device (hereinafter referred to as an operating mechanism), a drive motor rotates in response to an operation command to store energy in a spring (storage spring), and the stored energy is released. This rotates the drive shaft directly connected to the switch, and at the same time as the switch is operated, the rotation of the drive shaft operates the auxiliary switch and stops the drive motor.

(Problem to be Solved by the Invention) By the way, the drive motor is set so that the power is turned off immediately after release, but the power to the drive motor may be turned off due to the rotation of the drive motor and the rotational inertia of the reduction gear device. Since the rotational movement is continued after the rotation, the ratchet connected to the deceleration gear device also repeats the rocking movement, and there is a possibility that the second energy storage operation will start.

If the operating mechanism is in this state, the ratchet will receive a reverse load from the energy storage spring, causing ratchets 1 to 1.
is constantly under load. Therefore, not only is unreasonable stress generated in the mechanism including the ratchet, but also the next energy storage operation requires a large load torque when starting the drive motor, so there is a risk that the drive motor will not be able to start. Also,
In such a state where energy is partially stored, the main shaft may rotate due to the weight load on the switch main body, and the switch main body may be displaced.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a more reliable electric spring operating device that prevents excessive rotation of the motor drive unit during release.

[Structure of the invention]

(Means for Solving the Problems) The present invention transmits the rotation of a drive motor to an eccentric shaft via a reduction gear, and alternately rotates the pawl portions while swinging a part of the ratchet that engages with the eccentric shaft. In an electric spring operation device that operates a switch by causing a spring to reciprocate and rotate a pawl to store and release energy, at least one of the ratchets is connected to the magnet 1 to the device, and the spring is stored and released. When the magnet screw 1 is activated, the magnet screw 1 is energized to engage the claw portion with the claw portion, and when the magnet is released, the magnet device is deenergized to release the claw portion from the claw portion. be.

(Operation) By starting the drive motor and energizing the magnet device, the pawls of the pair of ratchets 1- engage with the pawls and rotate the pawls. The rotation of the pawl stores energy in the spring, and the switch is operated when the spring is released after the energy is stored. At this time of release,
By stopping the drive motor and deenergizing the magnet 1~ device, the claws of one of the ratchets 1~ are released from the claws, so the claws are not rotated by the rotational inertia of the drive system. It is possible to easily start the drive motor during the next operation, and also to smoothly store the energy of the spring.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing the structure of an embodiment of the present invention, and FIG. 2 is a front view showing the structure of essential parts of the embodiment of the present invention.

In FIGS. 1 and 2, 1 is a drive motor, and this rotating shaft is connected to sprockets 1 to 2a, 2b, 2c, and 2d.
It is connected to an eccentric shaft 5 via a deceleration device 4 comprising chains 3a and 3b. As shown in FIGS. 3 and 4, this eccentric shaft 5 is provided with eccentric portions 5b and 5c that are eccentric by a dimension E on different sides with respect to the center 5a, and a ratchet 6.7 is attached to each of these eccentric portions 5b and 5c. It is loosely fitted and connected. This ratchet 6.7 is tensioned by ratchet pushing springs 9a, 9b so that the pawls 6a, 7a can be pushed out toward the pawl 8 side at all times. In addition, only the ratchet 6 is operated by a solenoid I that is energized when an operation command is issued and deenergized when the power to the drive motor 1 is turned off.
The claw portion 6a receives a force pushing toward the claw portion 8 side by the push spring 11 and a force in the opposite direction from the ratchet tension spring 12, and when the solenoid 10 is deenergized,
When the plunger IOa is retracted, the force of the push spring 11 becomes smaller, and the tension of the ratchet pull spring 12 causes the claw portion 6a to
can be removed from the claw portion of the claw portion 8. Therefore, when the solenoid 10 is energized, the rotation of the eccentric shaft 5 causes the ratchet 6.7 to swing f6IN while the pawls 6a and 7a alternately reciprocate, causing the pawl 8 to rotate. A spring storage mechanism 13 is connected to this claw portion 8 . The other end of the spring storage mechanism 13 is connected to a connecting cam 15 via a lever 14 . Here, the lever 14 and the connecting cam 5 are fixed. This connecting cam 15 is
It is rotatably supported by a drive shaft 16 (although it is shown in a cutaway state in FIG. 1, it is integral). Further, a connecting force 1117 is rotatably supported on the drive shaft 16, and a connecting cam 18 is fixedly supported. Here, the connecting cam 17 has a cam surface 17 on the side opposite to the connecting cam 15 that engages when storing energy and disengages when releasing energy.
a, a lever J9 is fixed in the middle, and a cam surface 7b is provided on the side opposite to the connecting cam 18, which engages with the connecting cam 18 when the energization is released and disengages when the energization is stored. The lever 19 is connected to a spring mechanism 20. Here, spring mechanism 2
0 maintains the closed or tripped state, so the usage range is 50 to 100% of the stored force, and release beyond this is prevented by the spring. On the other hand, the end of the drive shaft 13 on the connecting cam 18 side is connected to the movable part (not shown) of the switch 21 via a member such as a lever, rod, block, or insulating iron (not shown) connected to this block. The end on the connecting force 11 ] 5 side operates the auxiliary switch 23 via the lever 22 . In addition, Figure 1 Neutral No. 2
4 indicates a dashpot provided on the opposite side of the movable part (not shown) of the switch 21.

Next, the operation of the embodiment having the following configuration will be explained. When an operation command to close or release the switch 21 is issued, the drive motor 1 is activated, the solenoid 1o is energized, and the pawls 6a of the ratchets 1 to 6 are also pushed out to the pawl molds 8. Due to the rotation of the drive motor]-, the eccentric shaft 5 is
rotates. When the eccentric shaft 5 rotates, the ratchet 6.7
reciprocates alternately while making a rocking motion, thereby rotating the claw mold 8. When the pawl mold 8 rotates, the spring storage mechanism 13 and the lever 14 (hair connection cam) 5 rotate. This connecting cam 15
After a slight delay after the cam starts rotating, the force 11 of the connecting cam 17 increases.
The surface 17a engages with the connecting cam 15, the lever 19 rotates, and the spring mechanism 20 starts accumulating energy. When the lever 19 rotates further and passes the dead point with respect to the spring mechanism 20,
The energy storage operation of the spring mechanism 20 is completed and the energy release operation is performed.

At this time, the coupling forces 1115 and 17 are disengaged, and the cam surface 17b of the coupling cam 17 and the coupling cam 18 are engaged.

The spring force of the spring mechanism 20 is then transmitted to the drive shaft J6 to close or disconnect the switch 21.

Further, at the beginning of the discharging operation, the auxiliary switch 23 is operated by the drive shaft 16 to turn off the power to the drive motor 1. In addition,
The second movement from accumulation to release is the first half of claw type 8]/2
It is done during rotation.

However, the drive motor] and the speed reducer 4 continue to rotate due to their rotational inertia until and after the power is turned off. However, since the engagement between the Kiha connecting cams 15 and 17 is disengaged, the load is increased rapidly and the rotational momentum is not reduced. Due to this rotational inertia, the l drive section continues to rotate, and the ratchet 6.7 swings to rotate the pawl mold 8, and the connecting cam 1
5 and 17 are engaged to try to reload the spring mechanism 0. Of course, the spring mechanism 20 will not release its force due to this re-accumulation, but the operating device will be held in the intermediate state of accumulating energy, and the ratchets 1-6 and 7 and the spring accumulating mechanism will 13 is constantly subjected to a spring force from the spring mechanism 20 via the coupling cam 15, 17.

In addition, as mentioned in -4-, the ratchets 1-0 and 7 are restrained by the spring force when the drive motor 1 is started when the next time the energy is stored, so a large starting force is required, and the next time the energy is stored. Sometimes it becomes impossible.

However, at the beginning of the releasing operation of the spring mechanism 20, the solenoid 10 is released, and the ratchet 6 is released from the ratchet tension spring 1.
2, and the claw portion 6a is released from the claw mold 8. Therefore, the eccentric shaft 5 rotates due to rotational inertia, and the ratchet h6,
7 while performing a rocking motion, the claw portion 6a.

Even if the ratchets 7a are alternately reciprocated, only the ratchet 7 acts on the pawl mold 8, and the pawl mold 8 does not rotate immediately after the spring mechanism 20 is released, and the drive motor 1
The rotational inertia of the speed reduction device 4 can prevent the spring mechanism 20 from being reloaded. In addition, no load is applied to the spring storage mechanism 13, and the position after release can be maintained.

In this state, no initial load is applied to the drive side, so starting with the next operation command is easy and reliable.
In addition, since the spring mechanism 20 is held at the final position of closing or tripping, the weight load of the switchgear 2 does not displace the mechanism inside the switch 21, which improves the reliability of the switch z1.
- Also contributes to

Next, when the next operation command is issued, the 1liI2 moving motor]
- starts, solenoid 10 is energized, and ratchet 1~
The claw portion 6a of No. 6 is pushed out into the claw mold 8. Thereafter, the spring mechanism 20 is charged and released in the same manner as the operation of the child chain,
Performs a tripping or closing operation of the switch 21. In addition, the operation from energy storage to energy release in -1- below is performed using the second half of the claw shape 8.
/2 revolutions.

〔Effect of the invention〕

As explained above, according to the present invention, the spring energy storage is performed.
Since at least one of the ratchets is released from the pawl type via a solenoid that operates at the same time as the spring is released, it is possible to prevent the re-storage of energy after the spring is released, and it is easy to start the drive motor. Thus, it is possible to provide an electric Yn spring operating device which is reliable and improves the reliability of the operation of the switch.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing the configuration of an embodiment of the present invention, and FIG. 2 is a front view showing essential parts of the embodiment of the present invention.
FIG. 3 is a front view showing the relationship between the eccentric shaft and the ratchet in one embodiment of the present invention, and FIG. 4 is a plan view of FIG. 3. 1. Drive motor 4. Reduction device 5. Eccentric shaft
6,7 Ratchet 8...Windmill
10.Solenoid 15.17.18...Connection cam
20... Spring mechanism 21... Switch agent Patent attorney Nori Chika Ken Yudo Daishimaru Ken b No.

Claims (1)

[Claims] The rotation of the drive motor is transmitted to the eccentric shaft via the reduction gear,
The switch is operated by swinging a pair of ratchets that engage with this eccentric shaft while alternately reciprocating the claws, rotating the ratchet wheel, storing energy in the spring, and then releasing the energy. In the electric spring operation device, at least one of the ratchets is connected to a magnet device, the magnet device is biased to engage the claw portion with the ratchet wheel when energy is to be charged, and the magnet device is biased to engage the pawl portion with the ratchet wheel when energy is released. An electric spring operating device characterized in that the device is deenergized to release the pawl portion from the ratchet wheel.