KR200146424Y1 - Connecting terminal of breaker for separation-type distributing wires - Google Patents

Abstract

The present invention is formed to separate the trip unit and the opening and closing unit, and to form a connection terminal in each unit to be used in combination with a separate wiring breaker, to improve the connection structure of the terminal to be convenient to use.

To this end, the present invention forms a fastening protrusion in the opening / closing connection terminal of the detachable wiring circuit breaker, and forms a fastener that is press-connected to the tripping connection terminal and is wrapped with a spring, and presses the fastening protrusion into the fastening terminal. Make a connection.

Description

Connection terminal of breaker type wiring breaker

1 is a side configuration diagram of a conventional circuit breaker

2 is a schematic configuration diagram of a circuit breaker for detachable wiring;

3 is a structural diagram of connection terminals of a breaker for separate wiring

4 is a structural view of the connection terminal of the present invention

Explanation of symbols for the main parts of the drawings

101: fastener

102: spring

301: fastening protrusion

[Detailed description of the proposal]

[Purpose of design]

An object of the present invention is to simply improve the terminal connection structure of a breaker for separate wiring.

[Technical field to which the draft belongs and its prior art]

The present invention relates to a terminal connection structure of a separate type circuit breaker in which a trip device and an opening and closing device are formed as separate units, and improve the connection structure to facilitate assembly and separation.

Wiring breaker is a device for overcurrent protection of low voltage indoor converter in electric equipment. It has the function of opening / closing load current and fault current and reusing after breaking operation.

1 is a configuration diagram of a general wiring breaker shown mainly on the center pole. This will be described based on the drawings.

The case 5 and the cover 6 of the main body are made of an insulating resin material to prevent the exposing of the charging part, and the component parts are roughly divided into tripping devices and opening and closing devices.

The trip device detects the occurrence of overcurrent on the converter to operate the switchgear, and performs the demonstration trip and the forward seat operation according to the overcurrent characteristics.

The bimetal 70 and the fixing core 71 are attached to the heater 72, and the heater is connected to the load terminal block 73. Amateur 74 is a projection formed on both sides can be fixed to the case can be rotated back and forth, bimetal and the upper projection of the amateur is adjacent to the trip cross bar 75 is formed uniaxially across each pole.

The switchgear has a mechanism part, a fixed contact point 810, and a movable contact point 820 that operate according to the operation of the trip device.

The fixed contact 810 is attached to the fixed contact 81 connected to the power supply terminal 80, the movable contact 820 is attached to the bottom of the movable contact (82). A holder 83 is connected to the shaft 830 formed uniaxially across each pole, and the holder 83 fixes the movable contact 82. The movable contact 82 can be rotated up and down about the fixed shaft 831 fixed to the side plate 84, and the grid 85 is located outside the rotation space of the movable contact 82.

The mechanism part is formed only in the center pole. The latch 86 pivots up and down about the latch pin 840 fixed to the side plate 84, and is caught by a latch holder 860 associated with the trip cross bar 75. The upper link 861 and the toggle link 862 are connected by the link pin 863 to bend, the toggle link is connected to the holder 83 by the holder pin 832, the upper link is the upper link pin 864 Is connected to the latch 86. The link pin is hung on a spring 88 attached to the lever 87, and a handle 89 for manual operation is attached to the lever 88.

Under normal conditions, circuit breakers carry current.

When an overcurrent exceeding the rated current flows, the bimetal 70 is bent to perform a demonstration trip operation by pressing the trip cross bar 75, and when a large current such as a short circuit current occurs, the armature 74 is formed in a strong magnetic field formed in the fixing core 71. ) Is momentarily aspirated to perform the forward seat operation of pushing the trip cross bar 75. Since the trip crossbar is formed uniaxially over each pole, the same trip operation occurs even if an overcurrent occurs at either pole.

When the trip crossbar rotates to push the latch holder 860, the latch 86 held by the latch holder is released, and the upper link 861 and the toggle link 862 are pulled by the tension of the spring 88 pulling the link pin 863. ) Is bent, and the contacts 83 and 820 are opened as the holder 83 and the movable contact 82, which are connected to the toggle link, bounce upwards rapidly. Since the holder 83 and the movable contact 82 of each pole are coaxially connected to the shaft 830, the contacts of each pole are also simultaneously opened in accordance with the contact opening of the center pole.

At this time, the arc generated at the contact is absorbed by the grid 85 and disappears to complete the interruption.

The conventional circuit breaker as described above is inconvenient to change the entire body when a change in capacity or rated current is required. According to the invention of the applicant of the same applicant, the invention “disconnectable wiring breaker”, which was devised to improve this, the wiring breaker is separately formed as a trip unit and an opening / closing unit, and the operation linkage of the trip device and the switching device and the converter of the energizing unit. A connection structure is formed to ensure continuity, and each unit can be replaced independently.

2 is a side view illustrating a schematic configuration of the splitter circuit breaker of the present applicant.

The main body of the circuit breaker is divided into a trip unit and an opening / closing unit, and the trip unit is composed of a trip unit case (1) and a trip unit cover (2), and the open / close unit is an open / close unit case (3) and an open / close unit cover (4). It consists of.

The trip unit case 1 is equipped with a trip device (not shown in part), and a trip part connecting terminal 10 connected to the heater is formed on a connection surface with the opening / closing unit. The trip unit cover 2 is attached to the auxiliary cover 20 that can be rotated up and down.

The opening / closing unit case 3 is equipped with a trip cross bar 75 and an opening / closing device (not shown) operated by the trip cross bar, and the opening / closing connection terminal connected to the movable contactor is connected to the trip unit. 30) is formed.

The circuit breaker for the detachable wiring combines the case and the cover to assemble the trip unit and the opening and closing unit, respectively, and then connects the connection terminals 10 and 30 to connect the trip unit and the opening and closing unit, and covers and fixes the auxiliary cover to complete the assembly. do.

In the state in which the trip unit and the opening / closing unit are coupled, the converter is continuously formed through both connection terminals 10 and 30, and the bimetal 70 and the armature 74 are adjacent to the trip cross bar 75. When the overcurrent occurs, the bimetal or the amateur pushes the trip crossbar to operate the switchgear, and as described above, the contact is opened and the power is cut off.

The terminal connection structure of the split type circuit breaker is shown in FIG. 3. As shown in the drawing, the threaded connection holes 100 and 300 are formed in the opening and closing connection terminal 30 and the tripping connection terminal 10, respectively, and are fastened with screws.

However, the terminal connection structure as described above has a disadvantage in that the fastening operation is cumbersome.

[Technical Challenges to be Done]

The present invention was devised to solve the above problems, and an object thereof is to improve the terminal connection structure of the separate type circuit breaker for the purpose of convenience of use.

In order to achieve the above object, the present invention simplifies the connection structure by forming a fastening protrusion in the opening / closing connection terminal of the split type circuit breaker and forming a fastener in which the fastening protrusion is press-connected to the tripping terminal connection terminal.

[Composition and Action of Design]

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, the same or equivalent parts as in the prior art will be described with the same reference numerals.

4 is a side view showing the terminal connection structure of the present invention.

A fastening protrusion 301 is formed on the bottom of the distal end of the opening and closing connection terminal 30, and a fastener 101 is formed on the upper surface of the tripping connection terminal 10, and the outer surface of the fastener is a spring having a large modulus of elasticity. Wrap in (102).

When the fastening protrusion 301 is pressed into the fastener 101 at the time of connection of the terminal, the fastening protrusion is pressed by the elasticity of the spring 102 and the fastener itself, and thus, between the outer surface of the fastening protrusion and the inner surface of the fastener. The friction force acts on and is firmly fixed.

Even when the terminal is disconnected, it can be easily removed by extracting the fastening protrusion from the fastener.

[Effect of design]

As such, the present invention improves the terminal connection structure of the separate type circuit breaker, thereby making terminal connection and disconnection easier.

Claims (1)

In the detachable wiring breaker, which is separated into a trip unit and an opening / closing unit, and uses a trip part connecting terminal 10 and an open / close part connecting terminal 30, the fastening protrusion 301 is formed on the bottom of the terminal end of the open / close part connecting terminal 30. And a fastener 101 into which the fastening protrusion is press-fitted to the trip part connecting terminal 10, and surrounding the outer surface of the fastener with a spring 102 to fasten the fastening protrusion 301. A connecting terminal of a breaker for separate wiring, characterized in that the terminal is pressed into the sphere (101) to engage the terminal.