KR102624122B1 - A portable error tester for voltage cable connector - Google Patents

Abstract

The present invention relates to a portable error tester voltage cable terminal connector, and more specifically, to a portable error tester voltage cable terminal connector that allows the terminal to be gripped with a simple operation while preventing it from falling off. In, the main body 100; A fixed gripper 202 fixed to the main body 100; A movable gripper 201 provided to be movable from the main body 100 toward the fixed gripper 202; A first arm portion 310 connected to the movable gripper 201 and driving the movable gripper 201; a second arm portion 320 rotatably crossing the first arm portion 310 and the scissor hinge portion 330 and connected to the fixed gripper 202; a rotation knob 600 that applies a rotational force to the first arm 310 so that the movable gripper 201 approaches the fixed gripper 202; A portable error tester including a voltage cable terminal connector is provided, and the terminal is gripped using a fixed gripper and a movable gripper, so there is no problem of the terminal grip falling off due to wire sagging due to its own weight, thereby improving the ease and convenience of measurement and stability. The strengths it offers are demonstrated.

Description

Portable error tester voltage cable terminal connector {A portable error tester for voltage cable connector}

The present invention relates to a portable error tester voltage cable terminal connector, and more specifically, to a portable error tester voltage cable terminal connector that allows the terminal to be held with a simple operation while preventing it from falling off.

The portable watt-hour meter error tester is an essential basic measuring instrument for instrumentation work that can test the error of the watt-hour meter.

This portable watt-hour meter error tester measures the voltage, current, power factor, and phase angle of each phase of the watt-hour meter to test whether there is an abnormality in the metering error.

Conventionally, voltage detection has been performed by holding the ground electrode, as shown in Figure 1 (c), using an alligator clip, as shown in Figure 1 (b).

However, as shown in Figure 1, in the process of performing work using voltage alligator clips on the R, S, and T terminals in turn, tension is applied due to the load of the wire itself, as shown in Figure 1(a), causing the attached alligator clip to fall off. occurs.

A voltage detection pin was developed to solve the problems of the prior art.

However, as shown in Figure 1(d), the conventional voltage detection pin also had limitations in applying to existing watt hour meter terminal screws.

In addition, the conventional voltage detection pin is problematic because the mounting part is unstable and frequently falls off.

KR 2020-0135899 A

The present invention to overcome the above problems of the prior art is to provide a portable error tester voltage cable terminal connector that uses a fixed gripper and a movable gripper, but can prevent tightening with a torque exceeding an appropriate torque, thereby minimizing terminal damage. It has a purpose.

In the voltage cable terminal connector, a main body (100); A fixed gripper 202 fixed to the main body 100; A movable gripper 201 provided to be movable from the main body 100 toward the fixed gripper 202; A first arm portion 310 connected to the movable gripper 201 and driving the movable gripper 201; a second arm portion 320 rotatably intersecting the first arm portion 310 and the scissor hinge portion 330 and connected to the fixed gripper 202; a rotation knob 600 that applies a rotational force to the first arm 310 so that the movable gripper 201 approaches the fixed gripper 202; A portable error tester including a voltage cable terminal connector.

In addition, a release spring 500 is provided between the first arm 310 and the second arm 320 to apply force in a direction that moves the movable gripper 201 away from the fixed gripper 202; It includes a portable error tester voltage cable terminal connector, further comprising:

In addition, each side wall of the movable gripper 201 and the fixed gripper 202 includes a portable error tester voltage cable terminal connector, characterized in that teeth are formed.

In addition, the first arm portion 310 provides a torque that specifies a limit to prevent the movable gripper 201 from approaching the fixed gripper 202 when the rotational force applied to the rotation knob 600 is greater than a preset rotational force. It includes a portable error tester voltage cable terminal connector, characterized in that it includes a limiting portion.

In addition, the torque limiting part includes a first support part 311 provided adjacent to the scissor hinge part 330; a second support part 312 connected to the first support part 311; a third support part 313 supported on the second support part 312; A torque spring 315 connected to the third support part 313; a fourth support portion 314 supported on the other end of the torque spring 315; a torque cube 316 in close contact with the fourth support part 314; Includes a rotary arm portion 420, one end of which is rotatable about the rotary hinge portion 317 and in contact with the torque cube 316, wherein the torque spring 315 rotates through the rotary knob 600. It has an elastic force corresponding to a preset rotational torque transmitted to the arm portion 420, and when the preset rotational torque is applied, the torque cube 316 is pressed against the inner wall of the first arm portion 310 to generate the preset rotational torque. It includes a portable error tester voltage cable terminal connector, wherein when more than a rotational torque is applied, the rotation of the torque cube 316 is suppressed and no further rotational torque is input.

In addition, between the rotation knob 600 and the first arm portion 310, the gear portion formed on the rotation knob 600 is engaged so that the first arm portion 310 rotates based on the scissor hinge portion 330. A rotating arm portion 420 preferably provided at an end of the first arm portion 310; It includes a portable error tester voltage cable terminal connector, further comprising:

In addition, a rotation guide portion 410 that guides the rotary arm portion 420 to enable sliding movement; It includes a portable error tester voltage cable terminal connector, further comprising:

In addition, the rotation guide portion 410 is provided with a first end 411 at one end and a second end 412 at the other end, and the first end 411 is an end of the second arm portion 320. is fixed, and the end of the first arm 310 is fixed to one end of the rotary arm 420. The portable error tester includes a voltage cable terminal connector.

In addition, the release spring 500 supports between the first arm portion 310 and the second arm portion 320, and supports the scissor hinge portion 330, the first end 411, and the second end ( 412) It includes a portable error tester voltage cable terminal connector, characterized in that it is located in the area between.

In addition, the fixed gripper 202 includes a portable error tester voltage cable terminal connector, which moves in a direction opposite to the rotation direction of the rotation knob 600.

According to the present invention as described above, the following effects are achieved.

First, since the terminal is gripped using a fixed gripper and a movable gripper, the problem of the terminal grip being removed due to wire deflection due to its own weight does not occur, thereby demonstrating the strengths of providing ease and convenience of measurement and stability.

Second, tightening with a torque exceeding the appropriate torque can be prevented, thereby minimizing terminal damage.

Figure 1 is a prior art
Figure 2 is an overall schematic diagram of the portable error tester voltage cable terminal connector according to a preferred embodiment of the present invention.
Figure 3 is a detailed view of the portable error tester voltage cable terminal connector according to a preferred embodiment of the present invention.
Figure 4 shows a torque limiting portion of the voltage cable terminal connector of a portable error tester according to a preferred embodiment of the present invention.
Figure 5 shows the operation of the torque limiter of the voltage cable terminal connector of the portable error tester according to a preferred embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

When describing each drawing, similar reference numerals are used for similar components.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, a first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component. The term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. It shouldn't be.

Figure 2 is an overall schematic diagram of a portable error tester voltage cable terminal connector according to a preferred embodiment of the present invention.

The main body portion 100 is provided with a movable gripper 201 and a fixed gripper 202 at one end, and a line portion 101 is formed at the other end.

Meanwhile, the rotation knob 600 is provided on the main body 100 and is rotatable.

The rotation knob 600 is linked with the first arm portion 310 provided inside the main body portion 100.

In other words, one end of the first arm 310 is connected to the fixed gripper 202 and the other end can be rotatably adjusted by the rotation knob 600.

The movable gripper 201 is fixed to the main body 100, and the fixed gripper 202 can move toward the movable gripper 201 according to the rotation of the rotation knob 600.

Accordingly, the voltage cable terminal (T) can be gripped between the movable gripper 201 and the fixed gripper 202 by rotating the rotation knob 600.

Meanwhile, the side walls of each of the movable gripper 201 and the fixed gripper 202 may be provided with teeth to maximize the holding force with the voltage cable terminal (T).

In relation to this, the operation of the fixed gripper 202 will be described in more detail.

Figure 3 is a detailed view of a portable error tester voltage cable terminal connector according to a preferred embodiment of the present invention.

The portable error tester voltage cable terminal connector according to a preferred embodiment of the present invention includes a movable gripper 201, a fixed gripper 202, a first arm 310, a second arm 320, a rotation guide 410, and a release. It may include a spring 500 and a rotation knob 600.

The first arm portion 310 and the second arm portion 320 are hinged to each other while rotatably intersecting at the scissor hinge portion 330.

One end of the first arm 310 is connected to the fixed gripper 202 and the other end is connected to the first end 411.

One end of the second arm 320 is coupled to the movable gripper 201 and the other end is connected to the second end 412.

Meanwhile, the rotation guide unit 410 allows the rotary arm unit 420 to slide.

In other words, the rotary arm unit 420 can move in the rotation guide unit 410 along a virtual circular arc with the scissor hinge unit 330 as the rotation axis.

Meanwhile, the rotary knob 600 is connected to the rotary arm portion 420.

More specifically, a driving gear unit (not shown) may be provided on the outer peripheral surface of the rotary knob 600 to be coupled to the rotary arm unit 420, and the rotary arm unit 420 may be coupled to the gear unit formed on the rotary knob 600. A corresponding driven gear unit (not shown) may be formed.

Therefore, when the rotary knob 600 is rotated clockwise, the rotary arm 420 can slide in direction B, and accordingly, the first end 411 connected to the rotary arm 420 also moves in direction B, The first arm portion 310 can rotate clockwise around the scissor hinge portion 330, which ultimately causes the fixed gripper 202 to move in the A direction.

In other words, the fixed gripper 202 can move in a direction opposite to the rotation direction of the rotation knob 600.

Meanwhile, the release spring 500 is provided between the first arm part 310 and the second arm part 320 between the scissor hinge part 330 and the rotation guide part 410, and is provided in the first arm part below the scissor hinge part 330. (310) and the second arm portion (320) are pushed in directions away from each other.

In other words, as the rotation knob 600 rotates clockwise, the release spring 500 may be compressed.

Conversely, when the rotation knob 600 is rotated and no external force is applied to the rotation knob 600 while the movable gripper 201 and the fixed gripper 202 are gripping the voltage cable terminal (T), the movable gripper 201 ) and the fixed gripper 202 can maintain the state of gripping the voltage cable terminal (T). This is because a stopper (not shown) can be provided inside the main body 100, and the stopper is located in the main body 100. It can be released by operating a release device (not shown) provided in.

Accordingly, when the stopper is released, the fixed gripper 202 is moved again by receiving force from the release spring 500 in a direction away from the movable gripper 201, that is, in the direction opposite to A.

Meanwhile, according to another preferred embodiment of the present invention, the release device (not shown) may not be provided as a separate component inside the main body 100, but may be possible through a pulling operation of the rotary knob 600.

In other words, in another preferred embodiment of the present invention, the rotary knob 600 may include three outer circumferential surfaces having different diameters, the largest diameter of which is a rotary knob portion that is held and turned by the user's hand, and The next largest diameter is the driving gear part in contact with the rotary arm part 420, and the part with the smallest diameter is the part including the rotation center axis (not shown) that allows the rotary arm part 600 to rotate. You can.

Therefore, when the user rotates the rotary knob 600 clockwise using the rotary knob unit, the driving gear unit (not shown) engages with the rotary arm unit 420 to move the rotary arm unit 420 in the B direction. When the user pulls the rotary knob (that is, pulls and lifts it in a direction away from the front of the main body 100), the driving gear part is separated from the rotary arm part 420 and is returned again by the elastic force of the release spring 500. The fixed gripper 202 is moved in a direction away from the movable gripper 201, and eventually, the movable gripper 201 and the fixed gripper 202 can be separated from the voltage cable terminal (T).

Meanwhile, the portable error tester voltage cable terminal connector according to a preferred embodiment of the present invention spins when a torque of a certain amount or more is applied to prevent damage to the voltage cable terminal (T) when the rotary knob (600) is rotated. possible.

In other words, the rotation knob 600 is capable of not transmitting torque above a certain level to the fixed gripper 202, as will be described in detail below.

Figure 4 is a view of the torque limiter of the voltage cable terminal connector of the portable error tester according to a preferred embodiment of the present invention.

The first arm portion 310 includes a first support portion 311, a second support portion 312, a third support portion 313, a fourth support portion 314, and a torque spring ( 315), a torque cube 316, and a rotation hinge portion 317.

In other words, the torque limiter includes the first support part 311, the second support part 312, the third support part 313, the fourth support part 314, the torque spring 315, the torque cube 316, and the rotation hinge part ( 317) may be included.

Meanwhile, one end of the rotary arm portion 420 is rotatably connected to the rotary hinge portion 317.

The first support part 311, the second support part 312, and the third support part 313 are provided relatively adjacent to the scissor hinge part 330, and the fourth support part 314 and the torque cube 316 are It may be placed relatively close to the rotation hinge portion 317.

At this time, the torque cube 316 may be a rigid structure formed in the shape of a cubic cube that can rotate inside the first arm 310.

The torque spring 315 applies a predetermined force in a direction in which the fourth support part 314 is spaced apart from the second support part 312.

In other words, the torque spring 315 may contract when the fourth support portion 314 receives more than a predetermined force toward the third support portion 313.

At this time, the preset force may be the allowable torque applied to the first arm 310, and accordingly, exceeding the predetermined rotational torque can be suppressed.

In more detail, Figure 5 shows the operation of the torque limiter of the voltage cable terminal connector of the portable error tester according to a preferred embodiment of the present invention.

Figure 5 (a) shows the state in which the rotary knob 600 is released by the release spring 500 as described above.

Figure 5(b) shows the rotation limit of the rotation knob 600 by the torque limiter, and shows the operating principle of preventing torque exceeding the preset rotation torque from being applied to the first arm 310.

When the rotary knob 600 rotates clockwise, the rotary arm 420 engaged with the rotary knob 600 is rotated around the rotary hinge 317, and the direction of rotation is toward the right end of the rotary arm 420. This direction is pushed in the D direction.

At this time, the left end of the rotary arm 420 pushes the torque cube 316, and the torque cube 316 pushes the fourth support part 314 in the direction of the third support part 313.

At this time, as the torque cube 316 rotates, its corner collides with the inner wall of the first arm 310, so it cannot rotate any further and enters the state shown in Figure 5(b). In this state, the torque spring 315 is C It is compressed in one direction, and this compression force may be equivalent to the maximum rotation torque value.

At the same time, the right end of the rotary arm 420 receives force in the D direction and presses the outer peripheral surface of the rotary knob 600, making it impossible to apply rotary force through the rotary knob 600 any longer.

As a result, pressure exceeding a preset value is not applied to the voltage cable terminal (T) located between the movable gripper 201 and the fixed gripper 202, thereby preventing damage to the voltage cable terminal (T) and simultaneously preventing damage to the main body ( 100) damage can also be prevented.

According to the preferred embodiment of the present invention as described above, when the voltage cable terminal (T) is held, the main body portion 100 and the line portion 101 are fundamentally suppressed from falling off due to their own weight, thereby enabling stable measurement and rotation. Easy gripping of the voltage cable terminal (T) is possible with a simple rotation of the knob 600, which not only improves workability, but also maintains the fourth support portion 314 even when excessive rotation torque is applied to the rotation knob 600. , By preventing input of more than the limit torque through the torque spring 315, 136, etc., the effect of preventing damage to the voltage cable terminal (T) and the main body 100 is exerted.

In addition, according to a preferred embodiment of the present invention, it provides versatility that can be applied regardless of the shape of the voltage cable terminal (T) of the watt hour meter.

100: main body
101: line part
201: fixed gripper
202: Mobile gripper
310: first dark part
311: first support portion
312: second support portion
313: third support
314: fourth support portion
315: Torque spring
316: Talk Cube
317: Rotation hinge part
320: 2nd dark part
330: Scissor hinge part
410: Rotation guide part
411: first end
412: second end
420: Rotating arm part
500: Release spring
600: Rotation knob
T: Voltage cable terminal

Claims (10)

In the voltage cable terminal connector,
Main body 100;
A fixed gripper 202 fixed to the main body 100;
A movable gripper 201 provided to be movable from the main body 100 toward the fixed gripper 202;
A first arm portion 310 connected to the movable gripper 201 and driving the movable gripper 201;
a second arm portion 320 rotatably intersecting the first arm portion 310 and the scissor hinge portion 330 and connected to the fixed gripper 202;
a rotation knob 600 that applies a rotational force to the first arm 310 so that the movable gripper 201 approaches the fixed gripper 202; Including,
Portable error tester voltage cable terminal connector.
According to paragraph 1,
a release spring 500 provided between the first arm 310 and the second arm 320 to apply force in a direction that moves the movable gripper 201 away from the fixed gripper 202; Characterized in that it further comprises,
Portable error tester voltage cable terminal connector.
According to paragraph 1,
Characterized in that teeth are formed on the side walls of each of the movable gripper 201 and the fixed gripper 202.
Portable error tester voltage cable terminal connector.
According to paragraph 1,
The first arm portion 310 includes a torque limiter that specifies a limit to prevent the movable gripper 201 from approaching the fixed gripper 202 when the rotational force applied to the rotation knob 600 is greater than a preset rotational force. Characterized by comprising,
Portable error tester voltage cable terminal connector.
According to clause 4,
The torque limiter,
A first support portion 311 provided adjacent to the scissor hinge portion 330;
a second support part 312 connected to the first support part 311;
a third support part 313 supported on the second support part 312;
A torque spring 315 connected to the third support part 313;
a fourth support portion 314 supported on the other end of the torque spring 315;
a torque cube 316 in close contact with the fourth support part 314;
Includes a rotary arm portion 420, one end of which is rotatable about the rotary hinge portion 317 and in contact with the torque cube 316,
The torque spring 315 has an elastic force corresponding to a preset rotation torque transmitted to the rotation arm 420 through the rotation knob 600, and when the preset rotation torque is applied, the torque cube 316 is pressed against the inner wall of the first arm portion 310, and when a rotational torque exceeding the preset rotational torque is applied, the rotation of the torque cube 316 is suppressed and no further rotational torque is input.
Portable error tester voltage cable terminal connector.
According to paragraph 2,
Between the rotation knob 600 and the first arm portion 310, the gear portion formed on the rotation knob 600 is engaged so that the first arm portion 310 rotates based on the scissor hinge portion 330. a rotating arm portion 420 provided at an end of the first arm portion 310; Characterized in that it further comprises,
Portable error tester voltage cable terminal connector.
According to clause 6,
a rotation guide unit 410 that guides the rotary arm unit 420 to enable sliding movement; Characterized in that it further comprises,
Portable error tester voltage cable terminal connector.
In clause 7,
The rotation guide unit 410 is provided with a first end 411 at one end and a second end 412 at the other end,
The first end 411 is characterized in that the end of the second arm 320 is fixed, and the end of the first arm 310 is fixed to one end of the rotary arm 420,
Portable error tester voltage cable terminal connector.
According to clause 8,
The release spring 500 supports between the first arm portion 310 and the second arm portion 320, and includes the scissor hinge portion 330, the first end portion 411, and the second end portion 412. Characterized in that it is located in the area between,
Portable error tester voltage cable terminal connector.
According to paragraph 1,
The fixed gripper 202 is characterized in that it moves in a direction opposite to the rotation direction of the rotation knob 600.
Portable error tester voltage cable terminal connector.