JP2848155B2 - Horizontal one-point cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal one-point cutting device.

[0002]

2. Description of the Related Art Conventionally, when a disconnecting switch is closed, a drive source 12 for opening and closing is driven and a driving force is transmitted to an operating rod 9 via a speed reduction mechanism 11, as shown in FIG. Further, by transmitting the power to the support 2a via the drive mechanism 10 and rotating the support 2a clockwise, the blade 5a is rotated integrally with the support 2a in the clockwise direction, and the rotation of the support 2a is controlled. Post 2b by operating link 8
The support 2b is rotated counterclockwise, the blades 5a and 5b are horizontally rotated in opposite directions horizontally in the opposite direction, and the contacts 4a and 4b come into contact with each other and the blade 5a is rotated. And 5b are in a straight line, the opening / closing drive source 12 stops, and the circuit operation ends. The two-dot chain line in FIG. 2 indicates a closed state,
From terminal block 6a, contact lid 7a, contact seat 3a, blade 5
a, a current path is formed to reach the terminal block 6b via the contacts 4a, 4b, the blade 5b, the contact seat 3b, and the contact lid 7b. As for the opening operation, the operation opposite to the closing operation is performed.

[0003]

However, in this conventional horizontal one-point cutting device, when the contacts 4a and 4b are exposed to the air without being in contact with each other for a long time in the open state, the contact 4a , 4b adhere to dust or form an oxide film, so that when the circuit is closed, contact failure occurs between the contacts 4a, 4b, and there is a disadvantage that an electric circuit cannot be formed. Therefore, the present invention prevents problems caused by poor contact between the contacts by removing the dust or the oxide film formed on the contacts during the closing operation, even if the oxide film is formed. Things.

[0004]

According to the present invention, there is provided a horizontal one-point cutting device having a support, a contact, and a blade. In particular, after the blade is aligned, it is temporarily stopped and then stopped. A control motor is provided for rotating the blade in the opening and closing directions by rotating the blade several times in the forward and reverse directions and sliding the contacts together.

[0005]

In the horizontal one-point cutting device of the present invention constructed as described above, the closing operation is performed by the control motor so that the contacts come into contact with each other and the blade becomes straight. When this happens, the control motor is temporarily stopped. After that, the control motor is rotated several times in the forward and reverse directions,
The rotation is transmitted to the operation rod via the speed reduction mechanism, and the blade swings in the opening and closing directions and slides between the contacts, so that dust and oxide film on the surface of the contacts are shaved. It is removed and a good contact is established between the contacts.

[0006]

FIG. 1 is a perspective view showing an example of a horizontal one-point cutting device according to the present invention. That is, the contacts 4a, 4b, the blades 5a, 5b, the terminal blocks 6a, 6b, the contact lids 7a, 7
b, an operation link 8, a base 1, a drive mechanism 10, an operation rod 9, a speed reduction mechanism 11, and a control motor 13. Gears are attached to the control motor 13, and the gears are connected to gears of the speed reduction mechanism 11. In the horizontal one-point cutting device of this example, when performing the closing operation, the control motor 13 is driven, the columns 2a and 2b rotate in opposite directions, and the contacts 4a and 4b come into contact with each other.
The blades 5a and 5b are aligned and the control motor 13
Is temporarily stopped. Thereafter, when the control motor 13 rotates several times in the forward and reverse directions, the operating rod 9 connected to the speed reduction mechanism 11 reciprocates by a certain angle. The reciprocating rotation of the operation lot 9 is transmitted to the columns 2a and 2b via the drive mechanism 10, and the blades 5a and 5b are swung in the open and close directions from the straight state, so that the contacts 4a and 4b slide with each other, dust and oxide film adhering to the surfaces of the contacts 4a and 4b are shaved and removed. Thereafter, when the blades 5a and 5b are aligned, the control motor 13 stops. The swing angle of the blades 5a and 5b is within a range in which the contacts 4a and 4b maintain a connected state with each other. On the other hand, when performing the opening operation, the operation opposite to the closing operation is performed.

[0007]

According to the present invention, when the disconnecting switch is closed as described above, after the contacts come into contact with each other and the blade is aligned, the blade swings and contacts. Since the contacts slide with each other, dust and oxide film adhered to the surfaces of the contacts are shaved and removed, so that problems caused by poor contact between the contacts can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a horizontal one-point cutting path device of the present invention.

FIG. 2 is a perspective view showing a general example of a conventional horizontal one-point cutting path device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2a, 2b Prop 3a, 3b Contact seat 4a, 4b Contact 5a, 5b Blade 6a, 6b Terminal block 7a, 7b Contact lid 8 Operation link 9 Operation rod 10 Drive mechanism 11 Reduction mechanism 13 Control mode Ta

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01H 31/30 H01H 1/60 H01H 31/02

Claims (1)

(57) [Claims] 1. A pair of rotatable supports provided at both ends of a base, a pair of contact seats fixed to the upper end of the support, an operation link connecting the supports, and a contact at a tip end. A blade having one end supported by the contact seat, a contact cover rotatable with respect to the rotation axis of the column, a terminal block mounted on the contact cover, and a drive for rotating the column. A mechanism, a deceleration mechanism transmitting torque to the drive mechanism,
The operation rod for connecting the speed reduction mechanism and the drive mechanism, and the drive mechanism perform a closing operation, and stop when the contacts come into contact with each other and the blades are aligned. And a control motor for rotating the blade several times in the forward and reverse directions to swing between the contacts by swinging the blade in the opening and closing directions.