KR200474390Y1 - Plug for Motor Control Center - Google Patents

Abstract

The present invention relates to a plug for interrupting and supplying electricity when a unit is drawn or drawn from an electric motor control panel.
The plug according to the present invention includes a top plate, a bottom plate, and a power supply terminal, and may further include a connector.
According to the present invention, by increasing the thickness of the connection terminal of the connector, the plug can be prevented from bending or twisting when the connector is coupled with the power supply terminal, and the contact area can be widened so that power supply to the unit can be smoothly performed. There is an advantage that the plug can be assembled.

Description

Plug for motor control panel {Plug for Motor Control Center}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for a connector of an electric motor control panel, and more particularly to a plug for interrupting and supplying electricity when a unit is drawn or drawn.

A motor control center (MCC) is used to manage and control the motor.

The motor control panel is of a cabinet type in which a plurality of units accommodating circuit components and a plurality of accommodating chambers accommodating a plurality of units are formed in various stages. A plurality of storage rooms are in a sliding manner in which a plurality of units are opened and closed in a drawer manner.

When the unit is pulled out from the housing chamber for inspection and mounting of the circuit components, the female connector provided on the rear face of the unit is separated from the male connector provided on the rear face of the motor control panel for supplying electricity. This prevents the power supply from being supplied to the unit. Further, when the drawn-out unit is drawn into the accommodating chamber, the female connector and the male connector are engaged to supply power to the unit. In this case, when the female connector and the male connector are combined, the female connector and the male connector must be in contact with each other in order for the power to be supplied smoothly.

Normally, the connector has a "U" shaped connection terminal, and the plug has a straight type power terminal, so that the connection terminal and the power terminal are coupled or disconnected to supply or cut off the power.

However, when the connector is coupled to the plug, the contact area of the connection terminal is not wide, and the contact strength of the connection terminal tends not to be large when the connection terminal is coupled with the power supply terminal.

In this case, not only the power can not be uniformly supplied but also sparks, deterioration and fusion occur, which may cause electric fire.

In the male and female connectors disclosed in Registration Practical Utility Model No. 20-0457984, power terminals are individually connected to plugs, and a plurality of bolts or other fastening mechanisms are required to couple a plurality of power terminals. That is, as the number of parts for fastening increases, it takes a long time to assemble and disassemble the plug. In addition, there is a problem that the power source unit cost is separated due to external shock or vibration.

Registration Utility Model No. 20-0457984 (male and female connectors)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a plug capable of uniformly supplying power by reinforcing a connection terminal of a connector of a motor control panel to secure a connection with a power terminal of the plug.

Further, the plug is composed of an upper plate and a lower plate so that the power terminal can be firmly fixed by the combination of the upper plate and the lower plate.

In order to achieve the above object, a plug according to an embodiment of the present invention may further include a plurality of female connectors which are fixedly mounted on a rear surface of each of the plurality of units, And is fixedly mounted on the rear side so as to face each other and to be coupled to or separated from the respective connectors.

The plug includes a plurality of power terminals that are formed of conductors and are connected to a power line, and an insulating case formed of an insulating material and including upper and lower plates to accommodate the plurality of power terminals.

The connector includes a plurality of connection terminals which are formed of conductors and are connected to the unit-side electric wires, a plurality of terminal blocks each of which is accommodated and coupled with the plurality of connection terminals, and which is formed of an electrically insulating material, Wherein a plurality of terminal blocks of the plurality of terminal blocks have different heights of the terminal blocks adjacent to each other, and one side surface of the female connector has an engagement hole having a fastening hole for engaging with a rear surface of the unit, As shown in FIG.

According to the plug of the present invention as described above, the thickness of the connection terminal can be increased, thereby preventing warping or warping and enlarging the contact area when the power terminal is coupled with the power terminal.

Further, the plug according to the present invention can supply stable power to the unit by the above-described structure.

In addition, the plug according to the present invention can facilitate wire connection work by forming a nut groove that can be engaged with a nut at a connection portion of the connection terminal.

The plug according to the present invention has a merit that the power terminal can be fixed firmly to the plug body and the power terminal can be fixed with a smaller number of fastening parts, have.

1 is a perspective view showing a plug and a connector according to a first embodiment of the present invention.
2 is a perspective view of a plug and a connector in a separated state according to the first embodiment of the present invention.
3 is an exploded perspective view of a plug and a connector according to a first embodiment of the present invention.
4 is a bottom perspective view of the connection terminal according to the first embodiment of the present invention.
5 is an exploded perspective view of a connector according to a first embodiment of the present invention.
6 is a cross-sectional perspective view taken along the line AA in Fig.
7 is an assembled perspective view of a plug according to a first embodiment of the present invention.
8 is a right side view of the plug according to the first embodiment of the present invention.
9 is a plan view of a top plate of a plug according to a first embodiment of the present invention.
10 is a plan view and a front view of a power terminal according to the first embodiment of the present invention.
11 is a coupling view and an exploded perspective view showing a state of coupling of a power source terminal and a power source line according to a second embodiment of the present invention.
12 is a perspective view of an insulating rubber according to a second embodiment of the present invention.
13 is a right side view of a plug according to a second embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: FIG. In the description of the present invention, if a detailed description of known techniques related to the present invention is deemed unnecessary, the detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

FIG. 1 is a perspective view showing a plug 200 and a connector 100 according to a first embodiment of the present invention. FIG. 2 is a perspective view of a plug 200 and a connector 100 according to a first embodiment of the present invention, 3 is an exploded perspective view of the plug 200 and the connector 100 according to the first embodiment of the present invention.

The plug 200 according to the first embodiment of the present invention includes a plurality of power terminals 210 which are formed of a conductive conductor and are connected to the power line 4 and are coupled to the cutout grooves 11a of the connection portion 11, And an insulating case for accommodating the plurality of power terminals 210. [

The insulating case is composed of an upper plate 230 and a lower plate 220.

9 is a plan view of a top plate of a plug according to a first embodiment of the present invention.

The upper plate 230 includes a back plate 235 constituting a base plate.

The upper plate 230 further includes an insulating partition plate 231. The insulating partition plate 231 is perpendicular to the back plate 235 and is disposed vertically so as to form a storage space between the plurality of insulating partition plates 231 adjacent to each other. do. The upper plate 230 includes a fixing plate 234 and a back plate 236 formed integrally with at least one of the plurality of insulating partition plates 231 and on the outer side thereof to form a back plate 236 And a plurality of bolt holes 238 formed through the through holes. The upper plate 230 is formed to protrude from one side and includes a plurality of guide portions 239 adjacent to each other.

At least one of the plurality of guide portions 239 includes a vertical portion 239a formed vertically to the back plate 235 of the upper plate 230, a horizontal portion 239b extended from an end portion of the vertical portion 239a, And a fixing protrusion 239c which is formed at the end of the fixing hole 239b and can be inserted into the terminal through hole 224. [ When the terminal through holes 224 are adjacent to each other, the guide portions 239 are formed to correspond to each other because they have different heights. The guide portion 239 is configured so as not to be exposed to the outside other than the portion where the power source terminal 210 is connected. Therefore, it is preferable that the shapes of the lower plate 220 and the power supply terminal 210 are determined. The fixing protrusion 239c is inserted into the terminal through hole 224 when the lower plate 220 and the upper plate 230 are engaged.

The lower plate 220 includes a back plate 225 and two side plates 226 which are perpendicular to the back plate 225 and which are adjacent to each other.

A plurality of guide plates 221 are formed between the side plates 226 so as to form insulation grooves 222 in which the power terminals 210 can be housed. The side plates 226 and the back plate 225 Are connected to each other to form a connection plate 227 constituting one side surface of the lower plate 220.

The lower plate 220 includes a plurality of protrusions 223 protruding from the outer surface of the connection plate 227 and a plurality of terminal through holes 224 penetrating the power terminals 210 to pass through the plurality of protrusions 223. [ . The protrusions 223 are characterized in that the height of the adjacent protrusions 223 is different. This is for easy coupling of the external power source in a narrow space.

And the other side facing the connection plate 227 on which the plurality of protrusions 223 are formed is opened.

A bolt hole is formed in each of the upper plate 230 and the lower plate 220 to fix the power terminal 210 between the upper plate 230 and the lower plate 220. Bolts are formed in the upper plate 230 and the lower plate 220, The bolt holes are formed at positions corresponding to each other. Therefore, the upper plate 230 and the lower plate 220 can be fixed with a single bolt. Due to this fastening method, the power supply terminal 210 can be easily coupled to the upper plate 230 and the lower plate 220 at the same time. That is, there is an advantage that the plug can be easily assembled and disassembled.

The insulating case may be formed of an insulating material such as reinforced plastic, such as the terminal block 20, and may function as an insulator. The insulating case may be fixed to the back plate of the electric motor control board through a bolt hole formed through the back plate 225 of the lower plate 220.

8 is a right side view of the plug 200 according to the first embodiment of the present invention.

Referring to FIG. 8, a plurality of projections 233 according to the first embodiment of the present invention are disposed adjacent to each other in order to prevent interference between the power supply line 4 and the power supply line 4 when the power supply terminal 210 and the power supply line 4 are coupled. The height of the protrusion 223 may be different.

10 is a plan view and a front view of the power supply terminal 210 according to the first embodiment of the present invention.

Each of the plurality of power supply terminals 210 according to the first embodiment of the present invention has one end bent toward the connection portion 11 of the connection terminal 10 to form a coupling portion 210a, A plurality of bolt holes (not shown) penetrating through the insulating case and the power line 4 are formed in the body of the power terminal 210. The plurality of bolt holes 234 are formed through the plurality of terminal through holes 234 formed in the protrusion 233, The power supply terminals 210 may correspond to the arrangement position of the connection terminal 10 so that the coupling portion 210a and the cutout groove 11a of the connection portion 11 are engaged with each other.

The power terminal 210 has a plate shape of a predetermined thickness and is accommodated in the insulating groove 222 and inserted into the terminal through hole 234a formed in the connecting plate 227 so as not to be separated from the insulating groove 222, .

The bolts 30 are fixed to the power terminal 210 through the bolt hole 218 formed in the power terminal 210 and the bolt holes of the upper plate 230 and the lower plate 220 to be more firmly fixed. Although it is common for bolts to be used as fastening tools, various fastening mechanisms such as rivets may be used for more rigid fastening.

The other end of the power terminal 210 is exposed through the terminal through hole 233a of the protrusion 233 to be bent at various angles and the through hole 232c The power supply line 4 can be fixed by the bolts 31 and the nuts 41. [ At this time, the nut 41 can be fixed to the bolt hole 210c by forming the nut projecting piece 41a similar to the nut projecting piece 40a of the terminal block 20, It can be convenient.

The power terminal 210 is preferably made of a conductive material such as copper.

The connection terminal 10 and the power terminal 210 are coupled to each other at precise positions and the coupling portion 210a of the power terminal 210 is accurately coupled to the cutout groove 11a of the connection portion 11 during the connection, As shown in FIG. Therefore, distortion, sparking, deterioration, and the like of the connection terminal 10 do not occur.

8, information on the external power supply may be displayed on the upper surface of the protrusions 233. As shown in FIG. For example, if the external power source is three-phase, four-wire, R, S, T, and N can be displayed in order. In addition, when the external power source is a three-phase four-wire type, four power terminals 210 are connected, three power terminals are connected to three power terminals, and two power terminals 210 are connected to two power terminals 210 The connection terminals 10 may have the same number as the number of the power supply terminals 210.

The lower plate 220 and the corrugated insulating rubber 240 may be coupled to each other at the other end side of each power source terminal 210 according to the first embodiment of the present invention.

The corrugated insulating rubber 222 may be inserted into the other end of each of the power terminals 220 to prevent electric shock and be fitted into the terminal through hole 233a of the protrusion 233. The material of the insulating rubber 222 may be composed of synthetic rubber and PVC which are elastic and insulating materials.

The insulating core 240 includes a coupling protrusion 241. The coupling protrusion 241 is formed to be inserted into the coupling groove 223a formed in the protrusion 223, The defect groove 223a has a continuous hole shape composed of a portion into which the engaging projection 241 can be inserted and a portion where the engaging projection is fixed. The insulating rubber 240 is engaged with the coupling groove 223a of the protrusion 223 and fixed firmly when the coupling rubber protrusion 241 is inserted into the coupling groove 223a and then the insulating rubber 240 is rotated. At this time, even if the insulating rubber 240 is pulled out, it does not fall out.

11 is a coupling view and an exploded perspective view showing a state of coupling of a power source terminal and a power source line according to a second embodiment of the present invention.

12 is a perspective view of an insulating rubber according to a second embodiment of the present invention.

13 is a right side view of a plug according to a second embodiment of the present invention.

Referring to FIG. 11, a plurality of power lines 4 may be connected to the power supply terminal 210. A general connection method is that two power lines 4 are connected to the upper and lower sides of the power terminal 210. At this time, the thickness between the power supply line 4 and the power supply terminal 210 becomes thick, and the thickness of the A-A surface becomes thicker than when one power supply line 4 is connected. Due to such a change, it may happen that the insulation rubber 240 is not easily coupled. In order to solve this problem, the insulating rubber 250 according to the second embodiment has been derived. The insulating rubber 250 includes a coupling surface 251 formed in a closed curve, and although not shown, the end of the coupling surface 251 may include a projection formed along the periphery. The protrusion formed at the end of the coupling surface 251 is formed to be easily engaged with the protrusion 223b formed in the lower plate.

And is characterized in that each corner has a curvature and is recessed toward the center of the square in the shape of a square in which the vertex of the coupling surface 251 is curved.

The curved surface portion 251a formed on the upper and lower surfaces of the engaging surface 251 is in the form of a circle having a curvature smaller than that of the curved surface portion 251b formed on the side surface portion. Therefore, the convex surface portion 251a formed on the upper and lower surfaces of the engaging surface 251 is more depressed. Since the insulating rubber 250 is made of a material having an elastic force, it is easy to insert the combined body of the power source terminal 210 and the power source line 4 into the insulating rubber 250 even if the AA plane of FIG. 11 becomes thick can do. That is, the convex surface portion 251a formed on the upper and lower surfaces of the coupling surface 251 can be bent upward and downward by an appropriate force, and the combination of the power terminal 210 and the power source line 4 can be easily passed have.

13, the protrusion 223b formed with the lower plate 220a has a shape corresponding to the cross-section of the coupling surface 251. [

5 is an exploded perspective view of the connector 100 according to the first embodiment of the present invention, and FIG. 6 is a cross-sectional view of the connector 100 according to the first embodiment of the present invention. Fig.

The connector 100 is fixedly mounted on the rear surface of the unit and is movable together with the movement of the unit. The plug 200 supplies power and can be fixedly coupled to the back plate of the motor control panel at the rear of the connector 100. The connector 100 is detached from the plug 200 by pulling out the unit, and can be supplied with power by being coupled with the plug 200 by the pulling of the unit.

The connector 100 according to the first embodiment of the present invention includes a plurality of connection terminals 10 and a plurality of connection terminals 10 each of which is composed of a conductive conductor and connected to the unit side electric wire 3, A plurality of terminal blocks 20 formed of an electrically insulating material and a pair of bolts 30 and nuts 40 for fixing the connection terminals 10 to the plurality of terminal blocks 20, respectively. The plurality of terminal blocks 20 have different heights of the terminal blocks 20 adjacent to each other and are formed at one side of the female connector 100 with a coupling hole 50a for coupling with the rear surface of the unit. 50 may be integrally formed.

The connector 100 is fastened to the rear surface of a unit accommodating the circuit components through a fastening hole 50a of a fastening hole 50 formed on one side thereof by fasteners such as bolts and screws, 100, and may be installed on the back plate of the electric motor control board located behind the unit containing room for housing the unit. The connector 100 is connected to the unit side electric wire 3 drawn out from the unit through the terminal block 20 and the plug 200 is connected to the external electric power line 4 by the power source terminal 210, The power can be supplied to the unit. That is, the connector 100 and the plug 200 are separated from each other when the unit is taken out from the unit accommodation room, and the power is cut off. When the unit 100 is in contact with the plug 100, power is supplied to the unit through the connector 100. The connectors 100 and the plugs 200 may be provided in pairs corresponding to the number of the unit accommodating chambers, one for each unit accommodating chamber.

Next, the connector 100 and the plug 200 will be described in detail as follows.

1 to 6, the connector 100 has a plurality of terminal blocks 20 formed on the connector 100 different from each other in height, so that the interference between the connection terminals 10 accommodated in the terminal block 20 And a short circuit can be prevented. Further, interference between the unit-side electric wires (3) when connecting the unit-side electric wires (3) to the connection terminals (10) can be prevented and the wiring work can be facilitated.

3 and 4, the connection terminal 10 of the connector 100 according to the first embodiment of the present invention is integrally formed with the connection portion 11 and the connection portion 11 which are engaged with and separated from the plug 200 And an elastic body 13 which is received in and coupled to the connection portion 11 to firmly connect the connection portion 12 to the bolt 30 and the unit side electric wire 3 and the connection portion 11, Lt; / RTI >

The connection terminal 10 has a plate-like shape of a predetermined thickness and is made of a phosphor bronze having a hard strength and an elasticity. A silver (Ag) plating layer is formed on the surface of the connection terminal 10 to improve the conductivity.

The connection portion 11 of the connection terminal 10 according to the first embodiment of the present invention has a cutout groove 11a formed by cutting a center portion of the cutout 11a and an elastic body 13 A reinforcing protrusion 11c formed by protruding an elastic body 13 to reinforce the connection portion 11 and a reinforcing protrusion 11c formed to protrude from the other surface of the elastic body 13 and a connection portion 11 And a locking protrusion 11d formed on both sides.

The connection portion 11 of the connection terminal 10 can have a high rigidity by increasing the thickness of the plate to prevent warping at the time of coupling with the power terminal 210 described later.

The elastic body 13 is in the form of a plate and can be received in the elastic receiving groove 11b formed by concave shape of the elastic body 13 on one surface of the connecting portion 11. [ The engaging projections 13a integrally formed at both ends of the U-shaped opening side of the elastic body 13 are fitted into the projecting engaging holes 11e formed corresponding to the connecting portions 11 to enable more firm engagement . The elastic body 13 is made of steel having high elasticity and formed into a U-shape, but it is not limited thereto and may have various shapes. The elastic member 13 allows strong connection when the connection portion 11 is coupled with the power supply terminal 210 to be described later. The elastic body 13 may be a snap ring or a compression spring.

The reinforcing protrusion 11c formed by protruding the shape of the elastic body 13 on the other surface of the connecting portion 11 can further prevent the connecting portion 11 from being warped or warped.

The size of the cutout groove 11a formed in the connection portion 11 is set to a size corresponding to the thickness of the power supply terminal 210, but not loosened.

3 and 4, the connection part 12 of the connection terminal 10 according to the first embodiment of the present invention includes a bolt hole 12a formed through the body to fix the unit-side electric wire 3 on one side, And the nut projecting piece 40a formed on the bolt hole 12a to receive a pair of nut projecting pieces 40a integrally projected from the nut 40 and the nut projecting piece 40a integrally projected to the nut 40, And a protruding piece guide groove 12c formed therein.

3 to 5, when the nut 40 is manufactured, the nut protruding piece 40a integrally protruding from the nut 40 is inserted into the bolt hole 12a of the connecting portion 12 And the projecting piece receiving groove 12b for receiving the nut projecting piece 40a may be formed at the lower end to fix the nut 40 to the connecting portion 12. [ This is to fix the bolt 30 to the nut 40 easily by fixing the nut 40 to the connection part 12 when the unit side electric wire 3 is connected to the connection part 12. Therefore, it is possible to avoid the trouble of fitting the nut (40) and the bolt (30) together, thereby facilitating the wiring work.

4, the protruding piece guide groove 12c formed in the protruding piece receiving groove 12b at the lower end of the bolt hole 12a to the end of the connecting portion 12 is formed in the nut receiving groove 24 The nut projecting piece 40a is prevented from being inserted into the connection portion 12 of the connection terminal 10 when the nut 40 is inserted.

The unit-side electric wire 3 can be fixed to the connection portion 12 by being engaged with the bolt 30 and being coupled with the nut 40 through the bolt hole 12a formed in the connection portion 12. [

3 and 5 to 6, each of the plurality of terminal blocks 20 according to the first embodiment of the present invention includes a plurality of terminal blocks 20 vertically extending from the front surface to the rear surface so that the connection portions 12 of the connection terminals 10 are inserted. A projecting step 22 is formed on both sides of the intermediate portion between the guide opening 21 and the guide opening 21 which are formed so as to engage with the engagement protrusion 11d of the connection portion 11 and a nut 40 The nut receiving groove 24 and the nut receiving groove 24 are formed in the lower portion of the nut receiving groove 24 so as to receive the threaded rod 30a of the bolt 30 in the lower portion of the nut receiving groove 24, And may include a receiving groove 25. Each of the plurality of terminal blocks 20 is connected to the upper portion of the guide opening 21 so that the bolt 30 and the unit side wire 3 are coupled to the upper surface of the connection portion 12 and the nut 40 can be inserted through the rear surface. The rear surface can be opened. This is to expose the connection portion 12 to the outside and fix the connection to the unit side electric wire 3 when the connection terminal 10 is inserted into the guide opening 21 of the terminal block 20.

The terminal block 20 is formed of an insulating material such as reinforced plastic and can function as an insulator. The connection between the terminal block 20 and the connection terminal 10 and the unit-side electric wire 3 will now be described with reference to FIGS. 5 and 6. FIG. When the connection portion 12 of the connection terminal 10 is inserted through the guide opening 21 of the front surface of the terminal block 20, the protrusion 22 of the terminal block 20 and the engagement protrusion 11d of the connection portion 11 I can not proceed anymore and it is fixed. And the nut 40 can be inserted into the nut receiving groove 24 through the opened rear face. The nut 40 is inserted into the nut receiving groove 24 along the protruding piece guide groove 12c of the connecting portion 12 so that the nut protruding piece 40a is seated in the protruding piece receiving groove 12b of the connecting portion 12 So that it can be fixed to the connection portion 12. The connecting portion 12 of the connecting terminal 10 may be inserted into the guide opening 21 after inserting the nut 40 into the nut receiving groove 24 first. The bolt hole 12a of the connecting portion 12 exposed to the upper portion of the guide opening 21 is coupled with the nut 40 through the bolt 30 coupled with the unit side electric wire 3, The connection terminal 10 can be connected to the unit-side electric wire 3 while the connection terminal 10 is fixed to the unit-side electric wire 3. The unit-side electric wire 3 can be connected to the remaining terminal block 20 as required in the above-described manner.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. But the present invention is not limited thereto.

10: connection terminal 11: connection part 12: connection part
13: Elastic body 20: Terminal block 30: Bolt
40: nut 50:
100: connector 200: plug
210: power terminal 220: lower plate 230: upper plate
218 volts ball
221 guide plate 222 insulated groove 223 protrusion
224 terminal through hole 225 back plate 226 side plate
227: Connection plate
231: Insulating partition plate 234: Fixing piece 235:
238: bolt hole 239: guide portion
240, 250: Insulated rubber

Claims (12)

delete A plug movable in a fixed manner on a motor control panel provided with a plurality of units for receiving circuit components for motor control and a plurality of unit accommodation chambers for receiving the plurality of units in a drawer manner,
The plug
A plurality of power terminals formed of conductors and connected to power lines; And
And an insulating case formed of an insulating material and including an upper plate and a lower plate for receiving the plurality of power terminals,
The above-
A back plate constituting a base plate of the upper plate;
A plurality of insulating diodes perpendicular to the back plate and adjacent to each other and vertically formed to form a storage space therebetween;
At least one fixing piece formed integrally with at least one of the plurality of insulating partition plates and outside; And
And a plurality of bolt holes formed through the back plate to fix the power terminal and the insulating case to the back plate. 3. The method of claim 2,
The lower plate,
A back plate constituting a base plate of the lower plate;
A side plate perpendicular to the back plate and adjacent to each other;
A plurality of guide plates disposed between the side plates so as to form insulating grooves for receiving the power terminals;
A connecting plate connected to the side plate and the back plate to form one side of the bottom plate;
A plurality of protrusions protruding from an outer surface of the connecting plate; And
And a plurality of terminal through holes penetrating the plurality of protrusions to allow the power source terminal to pass therethrough,
And the other side facing the connecting plate on which the plurality of protrusions are formed is opened. The method of claim 3,
A bolt hole is formed in each of the upper plate and the lower plate to fix the power terminal between the upper plate and the lower plate,
And bolt holes formed in the upper plate and the lower plate are formed at positions corresponding to each other. 5. The method of claim 4,
Wherein the plurality of protrusions have different heights of the protrusions adjacent to each other. 6. The method of claim 5,
Wherein the upper plate is protruded from one side and includes a plurality of neighboring guide portions,
Wherein the plurality of guide portions
At least one of the plurality of guide portions may include a vertical portion vertically formed on the back plate of the upper plate;
A horizontal portion extending from an end of the vertical portion; And
And a fixing protrusion formed at an end of the horizontal portion and capable of being inserted into the terminal through-hole. The method according to claim 6,
Wherein each of the plurality of power terminals has one end folded to form a coupling portion and the other end is exposed to the outside through the terminal through hole of the lower plate,
Wherein the body of the power terminal has a plurality of bolt holes penetrating the insulating case and the power line. 8. The method of claim 7,
Wherein the lower plate and the corrugated insulating rubber are coupled to each other at the other end side of each of the power supply terminals,
Wherein the insulating rubber is fixed to the coupling groove of the protrusion by a protruding and formed coupling protrusion. 8. The method of claim 7,
Wherein the lower plate and the corrugated insulating rubber are coupled to each other at the other end side of each of the power supply terminals,
The insulating rubber may be fixed to the coupling groove of the protrusion by a protruding coupling surface,
Wherein the coupling surface further includes a recessed surface portion that is recessed inwardly. 10. The method according to any one of claims 2 to 9,
Wherein the plug further comprises a connector which is opposed to and joined to or separated from the power terminal,
Wherein the connector comprises:
A plurality of connection terminals constituted by conductors and connected to unit-side electric wires;
A plurality of terminal blocks accommodated in the plurality of connection terminals and formed of an electrically insulating material; And
And a pair of bolts and a nut for fixing the connection terminal to each of the plurality of terminal blocks,
Wherein the plurality of terminal blocks have a height different from that of the adjacent terminal blocks, and one side of the connector is integrally formed with a coupling hole having a coupling hole for coupling with the rear side of the unit. 11. The method of claim 10,
Wherein the connection terminal
A connection unit coupled to and disconnected from the power supply terminal;
A connection portion formed integrally with the connection portion and coupled to the bolt and the unit-side electric wire; And
And an elastic body that is received in and coupled with the connection portion to secure the connection of the connection portion,
Wherein the connecting portion comprises:
A cutting groove formed by partially cutting the center;
An elastic body receiving groove formed on one side of the cutout groove to receive the elastic body therein;
A reinforcing protrusion protruding from the other surface of the elastic body to reinforce the connection part; And
And engaging jaws formed on both sides of the lower end of the connecting portion to engage the connecting portion,
The connecting portion
A bolt hole formed through the body to fix the unit-side electric wire to one side;
A protruding piece receiving groove formed in the bolt hole to receive a pair of nut projecting pieces formed integrally with the nut; And
And a protruding piece guide groove formed at a lower end to guide the protruding piece of the nut. 12. The method of claim 11,
Wherein each of the plurality of terminal blocks includes:
A guide opening formed vertically through the body from the front to the rear so that the connection portion of the connection terminal is inserted;
A protruding jaw formed on both sides of an intermediate portion of the guide opening to engage with the engaging jaws of the connecting portions;
A nut receiving groove formed at a lower portion of the guide opening to receive the nut; And
And a screw thread receiving groove formed vertically through a lower portion of the nut receiving groove to receive the threaded bar of the bolt at a lower portion of the nut receiving groove, wherein the bolt and the unit side electric wire are provided on the upper surface of the connecting portion And the upper and the rear of the guide opening are open so that the nut can be inserted through the rear surface.

Images