KR102679848B1 - Electric Connecting Connector for MCC - Google Patents

Abstract

The present invention includes: a first case in which a plurality of electrical connection bars are provided; a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; An electrical connection connector including a may be provided.

Description

Electric Connecting Connector for MCC {Electric Connecting Connector for MCC}

The present invention relates to an electrical connection connector for MCC that can connect a busbar by changing its position and can increase the protection function of the busbar.

In general, a motor control center (MCC) may be equipped with various electrical components and electrical connection connectors.

Various electrical components and electrical connection connectors are provided in a storage unit of a drawer-type structure with a storage space, and a plurality of such storage units may be provided along the vertical direction in the main body of the MCC.

The electrical connection connector must have good connection with the busbar provided for electricity supply and must maintain a secure connection.

The present invention provides an electrical connection connector for MCC that can be reliably connected to a busbar with a larger contact area and can be pressed with uniform pressure and reliable contact at the contact point with the busbar. .

The present invention includes: a first case in which a plurality of electrical connection bars are provided; a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A protective cover for protecting the penetrating electrical connection bar from the outside is detachably coupled to the front of the first case, and a first surface forming both sides of the protective cover and a top surface of the protective cover are provided. A step portion is formed on one side between the two surfaces, the step portion is formed in a portion facing the first case, and a plurality of coupling holes for detachably coupling to the first case are formed in the step portion, and the coupling holes An electrical connection connector may be provided in which a second locking protrusion protruding from the support surface formed at the front end of the cover portion of the first case is inserted and locked.

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In this way, the present invention consists of a first case and a second case that are detachable, and the inside of the first case is provided with a plurality of electrical connection bars exposed to the outside, and the inside of the second case is connected to the electrical connection bars. A plurality of connection holders are provided, and the exposed electrical connection bar is covered with an insulating tube for insulation. At this time, a connector is formed on the front of the first case, and the insulating tube is provided in a more secure connection to the connector. You can.

The present invention provides a removable cover on the upper part of the first case, pairs of through holes in the cover are arranged in proportion to the number of electrical connection bars, and a plurality of connection holders are provided through the through holes formed in the cover. It is through-coupled and connected to the end of the electrical connection bar located below, and a blocking member is formed on the bottom between the pair of through-holes, so that when the connection holder is connected, it is connected to the electrical connection bar while maintaining a distance from each other, so that the Shorting phenomenon can be prevented.

The present invention prevents unexpected electrical accidents by preventing the insulating tube from easily coming off by additionally combining a locking pin when connecting the insulating tube to the connector of the first connector.

A plurality of fastening holes are formed in a plurality of electrical connection bars inserted into the first case of the present invention, so that the length of the portion exposed to the first case can be adjusted to freely adjust the electrical connection distance of the wire connected to the end of the electrical connection bar. You can change and install it.

The connection clip provided in the electrical connection connector of the present invention can expand the contact area when connected to the busbar connected for electricity supply, so that electricity is passed smoothly and resistance heat that can increase if the contact area is narrow This can be reduced.

The connection member provided in the connection clip may be provided with an elastic member that provides a pressing force when connected to the busbar, and the elastic member is made of a leaf spring, so that the entire contact portion can be pressed with uniform pressure.

Since the connection member of the connection clip presses the entire contact portion with the busbar by the elastic member, the connected state can be maintained without shaking at the contact portion.

A coupling member is provided at one end of the connection clip to be coupled to the connection conductor, and since the coupling member is coupled with a screw coupling structure, it can be coupled to a connection conductor of a bent structure, and can be connected in both directions of the coupling member depending on the surrounding installation structure. Connecting conductors in a bent state can be selectively combined, and thus wiring with the connecting conductors is free.

In addition, the present invention can protect the exposed end of the electrical connection bar from the outside by attaching a detachable protective cover to the front of the first case, thereby preventing fire due to unexpected spark generation when energized. You can.

Additionally, since the protective cover of the present invention is detachably coupled to the first case, it can be selectively used by inserting an insulating tube as needed without using the protective cover. In other words, it can be easily assembled and used by selecting a protective cover or insulating tube.

Figure 1 is a combined perspective view of the electrical connection connector of the present invention.
Figure 2 is an exploded perspective view of the electrical connection connector of the present invention.
Figure 3 is a combined perspective view of the first case forming the electrical connection connector of the present invention.
Figure 4 is an exploded perspective view of the cover part of Figure 3.
Figure 5 is a bottom perspective view of the cover portion covering the top of the first case of the present invention.
Figure 6 is a plan perspective view of the first case of the present invention.
Figure 7 is a plan view of the cover provided in the first case of the present invention.
Figure 8 is a plan view of the first case of the present invention.
Figure 9 (a) is a cross-sectional view showing the combination of the present invention, and Figure 9 (b) is a cross-sectional view showing the structure of an insulating tube coupled to one electrical connection bar in Figure 9 (a).
Figure 10 is a cross-sectional view showing the state in which the insulating tube is coupled to the first case of the present invention.
Figure 11 is an enlarged cross-sectional view of part A of Figure 10.
Figure 12 is a cross-sectional view showing another example of an insulating tube coupled to the first case of the present invention.
Figure 13 is a cross-sectional view showing another example of an insulating tube coupled to the first case of the present invention.
FIG. 14 is a cross-sectional view of the joint portion of the insulating tube and the connecting pipe in FIG. 13.
Figure 15 is a front view showing an electric wire fastened to the connection holder of the present invention.
Figure 16 is an exploded perspective view of the connection holder of the present invention.
Figure 17 is an exploded perspective view of the connection holder of the present invention, showing a different side from Figure 16.
Figure 18 is a perspective view of the connection clip of the present invention combined.
Figure 19 is an exploded perspective view showing the connection clip being inserted into the first holder member of the present invention.
FIG. 20 is a perspective view of FIG. 10 with the connection clip inserted.
Figure 21 is a front view of the connection clip inserted into the storage groove of the first holder member of the present invention.
Figure 22 is an exploded perspective view showing the connection clip being inserted into the second holder member of the present invention.
FIG. 23 is a perspective view of FIG. 22 with the connection clip inserted.
Figure 24 is a front view of the connection clip inserted into the storage groove of the second holder member of the present invention.
Figure 25 is a front view showing an electric wire fastened to a connection holder according to another embodiment of the present invention.
Figure 26 is a perspective view showing the inside of a connection holder according to another embodiment of the present invention.
Figure 27 is a schematic diagram of an installation state of a connection holder according to another embodiment of Figure 26.
Figure 28a is a combined perspective view showing a protective cover according to another embodiment coupled to the first case of the present invention.
Figure 28b is a rear perspective view of Figure 28a.
Figure 29 is an exploded perspective view of Figure 28a.
Fig. 30 is an exploded perspective view of the electrical connection bar from Fig. 29;
Figure 31 is a perspective view of the protective cover of the present invention.
Figure 32a is a bottom view of the first case and the protective cover of the present invention in a separated state.
Figure 32b is a bottom view of the assembled state from Figure 32a.
Figure 33 is a front view of the present invention.
Figure 34 is a cross-sectional view of a portion of the protective cover coupled to the first case of the present invention.
Figure 35 is an exploded perspective view showing another example of the protective cover of the present invention.
Figure 36 is a front view of the protective cover from Figure 35 in a combined state.

Figure 1 is a perspective view of the electrical connection connector of the present invention, and Figure 2 is an exploded perspective view of the electrical connection connector of the present invention.

Referring to Figures 1 and 2, the electrical connection connector 10 of the present invention may include a first case 100 and a second case 400.

The first case 100 and the second case 400 may be detachably coupled, and a plurality of electrical connection bars 110 may be provided inside the first case 100, and the second case 400 may be provided with a plurality of electrical connection bars 110. ) may be provided with a plurality of connection holders 200 inside.

The first case 100 may be formed in a square box shape with a storage space inside.

An openable cover 120 may be provided on the upper part of the first case 100, and a plurality of partition walls 130 may be formed inside the first case 100 at predetermined intervals, with one side A plurality of electrical connection bars 110 may be inserted and coupled through.

A predetermined access path 132 for inserting and arranging the electrical connection bar 110 may be formed by the partition wall 130.

A plurality of connector pipes 140 through which a plurality of electrical connection bars 110 pass may be provided to protrude from the front of the first case 100 .

An electrical connection bar 110 may be provided through each of the plurality of connection pipes 140, and an insulating tube 150 may be provided on the outside of each electrical connection bar 110 for electrical protection.

The insulating tube 150 may have a bellows-type structure corrugated along the length, may be made of an insulating rubber material, and may be detachably coupled to the outer peripheral surface of the connection pipe 140.

The structure for fastening the insulating tube 150 to the connector 140 can be provided in various forms.

As an example, referring to FIGS. 10 and 11, a locking protrusion 151 is formed inside the inlet side of the insulating tube 150, and the exposed end of the connector 140 coupled to the first case 100 A locking protrusion 141 may be formed to protrude from the outer peripheral surface of the connection pipe 140 to allow the locking protrusion 151 to be caught along the circumferential direction. A fastening protrusion 142 may be formed on one end side of the connector 140 to be inserted into the front part of the first case 100 and locked. Of course, the connector 140 can be attached or detached from the front of the first case 100 as needed. Accordingly, the portion where the fastening protrusion 142 is formed may extend from the connector 140 like a leg, and has elasticity so that it can expand and contract in the radial direction.

In addition, a through hole 152 may be formed on the inlet side of the insulating tube 150, and a coupling hole 143 may be formed on the outer peripheral surface of the connecting pipe 140, and a locking pin ( 153) can be inserted and fixed by penetrating and coupling the coupling hole 143.

Referring to FIG. 14, the locking protrusions 141 may be formed in plurality at predetermined lengths at intervals along the circumferential direction of the connector 140, and may be formed in plurality in the connector 140 shown in FIGS. 1 to 4. Like the protruding protruding protrusion 141, it may be formed to be relatively shorter than the protruding protrusion 141 shown in FIG. 14 along the circumferential direction. When the locking protrusion 141 shown in FIG. 14 is formed to have a predetermined length in the circumferential direction, the catching area of the locking protrusion 141 with the insulating tube 150 may increase, so that the locking protrusion 141 of the insulating tube 150 The joint state can be achieved more reliably, and phenomena such as easy breaking can be prevented compared to the small length formed.

In the case where the protruding area and formation length are relatively small, such as the engaging protrusions 141 shown in FIGS. 1 to 4, more of them are formed at intervals along the circumferential direction to ensure that the engaging protrusions with the insulating tube 150 are secured. It can be maintained.

As another example, referring to FIG. 12, a coupling hole 154 is formed at a predetermined position of the insulating tube 150, and an electrical connection bar ( A fastening hole 110a may be formed in 110) and may be fixedly coupled through a locking pin 155 such as a screw.

In addition, as another example, a pair of extension pieces 156 are formed on one side of the inlet part of the insulating tube 150 coupled to the connector 140, and a pair of extension pieces 156 facing each other have a locking pin ( 157) can be penetrated and combined. That is, the inlet portion of the insulating tube 150 that surrounds and is coupled to the connecting pipe 140 may be cut to form two members, and a pair of extension pieces 156 may be formed to overlap.

In this way, the insulating tube 150 is not easily separated from the connector 140 provided on the front of the first case 100 and can reliably maintain its coupled state.

Meanwhile, instead of forming the extension piece 156, a cable tie may be tied to the outer peripheral surface of the inlet portion of the insulating tube 150 to couple it to the connector 140.

The plurality of electrical connection bars 110 may be arranged at different installation positions. That is, when viewed from the front of the first case 100, the plurality of electrical connection bars 110 may be arranged in first and second positions that are not at the same height but have different heights.

In an embodiment of the present invention, the plurality of electrical connection bars 110 may have different heights from the adjacent electrical connection bars 110 and may be formed at the same height as the next electrical connection bar 110. However, it is not limited to this arrangement structure, and all of the electrical connection bars 110 may have different heights, or some may be arranged at the same height and some may be arranged at different heights.

In addition, the electrical connection bar 110 arranged at the first position on the front of the first case 100 is exposed to the outside of the first case 100 and includes a first connection piece 111 in a horizontal state, a first connection piece A second connection piece 112 is bent from 111 and provided inside the first case 100 at different heights, and is bent from an end of the second connection piece 112 to form a predetermined height in the vertical direction. It may be configured to include a third connection piece 113.

In addition, the electrical connection bar 110 arranged on the front of the first case 110 in a second position that is different from the first position, that is, in the lower direction of the first case 110, which is a position lower than the first position. 1 It may be configured to include a first connection piece 111 exposed to the outside of the case 100, and a third connection piece 113 bent at the end of the first connection piece 111 and formed in a vertical direction. there is.

The electrical connection bars 110 arranged in the first and second positions are provided on the inner bottom surface of the first case 100 and are disposed in the first position, which is a relatively high position, so as to be fastened ( 110) is bent downward and then a second connection piece 112 is formed in a horizontal state, and the electrical connection bar 110 arranged at a second position lower than the first position is a second connection piece provided by bending. It may be a structure in which only the third connection piece 113 bent perpendicularly to the end side of the first connection piece 111 is formed without (112).

A wire fastening hole 111a may be formed at one end of the first connection piece 111.

A plurality of fastening holes 112a may be formed at intervals in the second connection piece 112 or the extended portion of the first connection piece 1110 inserted into the first case 100, and the first case 100 ), a fastening protrusion 134 that is inserted into the fastening hole 112a and is caught may be formed to protrude.

The plurality of electrical connection bars 110 can be arranged at different heights when inserted into the first case 100, and the electrical connection bar 110 inserted into the first position when arranged is a second electrical connection bar 110 of a bent structure. A connection piece 112 is formed, and the electrical connection bar 110 inserted from the first position to a lower second position is inserted into the inside of the first case 110 in a straight line without the second connection piece 112. , It may be a structure in which a third connection piece 113 is formed that is bent and protrudes in the direction of the bottom of the cover portion 120. This may be to ensure that all electrical connection bars 110 are arranged on the inner bottom surface of the first case 110 through the bent second connection piece 112.

Here, the electrical connection bar 110 is installed inside the first case 100 and can adjust the length it protrudes to the outside.

That is, referring to FIG. 3, the second connection piece 112 of the electrical connection bar 110 inserted into the plurality of access paths 132 formed inside the first case 100 has a plurality of fastening holes 112a. Since it is formed, when the fastening hole 112a at a desired position is inserted into the fastening protrusion 134 protruding in the access road 132, the length of the first connection piece 111 exposed to the outside of the first case 100 is variable. It can be.

Therefore, when the length of the wire for electrical connection is short depending on the installation location, the installation position of the corresponding electrical connection bar 110 is changed without the need to move the first case 100 itself, so that the wire of the electrical connection bar 110 is connected. The wire can be connected through the fastening hole 111a.

The cover part 120 can be detachably coupled to the upper surface of the first case 100, and locking protrusions 121 are formed on both edges, and a plurality of through holes ( 122) can be formed.

The plurality of through holes 122 may be formed so that a pair of first through holes 122a and a second through hole 122b form a set for each access road 132 into which the plurality of electrical connection bars 110 are inserted. . Accordingly, a blocking member 123 may be formed between the pair of first through holes 122a and the second through holes 122b to space them apart from each other. The blocking member 123 may be formed to protrude from the bottom between the first through hole 122a and the second through hole 122b.

The bent third connection piece 113 of the electrical connection bar 110 to be inserted may be located on the bottom of the blocking member 123 and face it.

The connection clip 300 of the second connector 200 is connected through the through hole 122 of the cover portion 120, and the connection clip 300 has a pair of first through holes 122a and second through holes. It can be simultaneously inserted into (122b) and connected to the third connection piece 113 of the electrical connection bar 110.

Referring to FIGS. 1 and 2 , a rotatable opening/closing cover 410 may be provided in the second case 400 . A plurality of storage spaces 402 separated by partition walls may be formed in the second case 400 at intervals. Likewise, a plurality of storage spaces separated by partition walls may be formed in the opening/closing cover 410 at intervals.

The plurality of connection clips 300 penetrate through the through hole 122 of the cover part 120 and are connected to both sides of the bent third connection piece 113 of the electrical connection bar 110 provided inside the cover part 120. An electrical connection state can be established by contacting, and at this time, the connection members 310 and 320 of the pair of connection clips 300 are inserted into the first through hole 122a and the second through hole 122b, respectively. It is connected to both sides of the bent third connection piece 113 of the electrical connection bar 110, and is connected to the connection member by a blocking member 123 formed between the first through hole 122a and the second through hole 122b. (310) (320) can be maintained at a constant distance from each other, and this blocking member (123) prevents shorting, etc., which may occur as the pair of connecting members (310) (320) are always close. and can maintain a stable state.

15 to 23, a plurality of connection holders 200 according to an embodiment of the present invention may be provided in the connection cover 120 of the connector body 100 at intervals. When providing a plurality of connection holders 200 in the connection cover 120 of the connector body 100, for example, when providing four connection holders 200, the colors of each connection holder 200 are different. It can be prepared by color, and each color can be identified by R, S, T, N in case of 3-phase power of MCC (or distribution board, distribution board, etc.).

The connection holder 200 may include a holder member in which two members are assembled. That is, the holder member may include a first holder member 210 and a second holder member 220, and the first holder member 210 may include the first body portion 211 and the first body portion 211. It may include one or more first storage grooves 212 formed on one surface and a fastening hole 213 formed at one end of the first body portion 211.

The first holder member 210 and the second holder member 220 may be connected to the third connection piece 113 of the electrical connection bar 110 inserted into the first case 100.

A first partition 212a may be formed in the first storage groove 212 to prevent contact between the inserted connection clips 300.

Additionally, one or more first heat dissipation holes 214 may be formed on one side of the first body portion 211.

A first locking protrusion 215 may be formed to protrude on one surface of the first body portion 211 by being inserted into the conductor portion of the connection clip 300 and being caught.

The fastening hole 213 of the first holder member 220 may be formed with an insertion groove 213a into which the nut 216 can be inserted.

A fitting protrusion 218 and a fitting groove 219 may be formed inside the first holder member 210 as a structure for detachably coupling with the second holder member 220.

The second holder member 220 may include a second body portion 221 and one or more second storage grooves 222 formed on one surface of the second body portion 221, and the second body portion 221 A second locking protrusion 223 that is inserted into the connection conductor 330 of the connection clip 300 and is caught may be formed to protrude at one end of the. Of course, the busbar B can be connected instead of the connecting conductor 330.

A second partition wall 222a may be formed in the second storage groove 222 to prevent contact between the inserted connection clips 300.

One or more second heat dissipation holes 224 may be formed on one side of the second body portion 221.

Like the first holder member 210, the second holder member 220 may be formed with a fitting protrusion 226 and a fitting groove 227 for detachably coupling to the second holder member 220. Accordingly, the fitting protrusion 226 may be formed in the first holder member 210. It is coupled to the fitting groove 219 of the holder member 210, and the fitting protrusion 218 of the first holder member 210 is coupled to the fitting groove 227 so that it can be assembled.

Fitting protrusions 211a and 221a may be formed on the first body 211 of the first holder member 210 and the second body 221 of the second holder member 220, respectively. The fitting protrusions 211a and 221a may be detachably coupled to the fitting holes 121a formed on both sides of the storage member 121 of the connection cover 120.

The fitting protrusions 211a and 221a may be formed to be inclined in the direction in which the assembled holder member is inserted into the storage member 121 of the connection cover 120. When the holder member is inserted into the storage member 121 of the connection cover 120, the fitting protrusions 211a and 221a are inserted into the fitting holes 121a formed on both sides of the storage member 121 with a clicking sound and are caught. This can be done.

Meanwhile, the first holder member 210 and the second holder member 220 constituting the connection holder 200 have fitting protrusions 211a and 221a formed to protrude on the side by a pushing force when connected to the busbar for electrical connection. ) may break or fall over.

Therefore, in order to prevent this situation from occurring, the present invention forms a coupling hole instead of the fitting projections 211a and 221a, and connects a coupling pin (not shown) through the hole 420 formed in the second case 400. It can be jammed by inserting a .

The connection clip 300 may include a pair of connecting members 310 and 320 facing each other, and a connecting conductor 330 connected to the lower portion of the connecting members 310 and 320.

Additionally, the pair of connection members 310 and 320 may be provided with an elastic member 340 to press them against each other.

Additionally, two coupling holes, a first coupling hole 331 and a second coupling hole 332, may be formed in the connection conductor 330. The first engaging protrusion 215 and the second engaging protrusion 223, which are the engaging protrusions of the first holder member 210 and the second holder member 220, are inserted into the first coupling hole 331 and are engaged. 2 A bolt 217 as a fastening member may pass through the coupling hole 332 and be fastened with a nut 216, a fastening member provided on the first holder member 210.

When the connection members 310 and 320 are inserted into the interior of the connection holder 200, only the contact portion of the connection members 310 and 320 (the portion in contact with the busbar B as shown in FIG. 19) is external. and the remaining portion may be surrounded by the first holder member 210 and the second holder member 220 that form the connection holder 200. Accordingly, the connection members 310 and 320 expose only the contact portions necessary for electrical connection with the busbar B, and the remaining portions are all covered, so they can be blocked from the outside, and no electrical contact occurs, thereby ensuring electrical stability. This can be improved.

The first holder member 210 and the second holder member 220 may be formed to have different lengths, and in an embodiment of the present invention, the length d1 of the first holder member 210 is equal to the length of the second holder member 210. By forming it to be longer than the length d2 of 220, a space S for fastening the bolt 217 can be secured. A fastening hole 213 is formed in the first holder member 210, and the nut 216 is inserted into the insertion groove 213a to connect the wire E, so it is formed longer than the second holder member 210. In the space S secured by doing so, the worker can secure the bolt 217 by screwing it through the second coupling hole 332 formed in the connection conductor 330 of the connection clip 300 and screwing it to the nut 216. . At this time, the wire E may be previously inserted into the bolt 217.

The connection holder 200 can surround and support the inserted connection clip 300, and the two members, the first holder member 210 and the second holder member 220, can be detachably assembled.

Referring to FIGS. 13 to 15, the inner surface of the first body portion 211 forming the first holder member 210, that is, the portion where the connection clip 300 is inserted, has a plurality of first storage grooves 212. Because of the formed structure, one connection member 310 of the connection clip 300 can be inserted. In addition, a first locking protrusion 215 is formed to protrude on the inner surface of the first body portion 211, and this first locking protrusion 215 is connected to the connection member 310 of the inserted connection clip 300 ( It may be inserted into the coupling hole 331 of the connection conductor 330 sandwiched between the lower parts of the 320 to achieve a caught state.

When the first locking protrusion 215 is inserted into the coupling hole 331, it may not be inserted for the entire length of the coupling hole 331, but may be inserted for approximately 1/2 of the length. This is because the second locking protrusion 223 of the second holder member 220 provided on the opposite side is inserted into the coupling hole 331 of the connection conductor 330 approximately 1/2 of the way.

In addition, a fastening hole 213 for connecting the electric wire (E) is formed in the lower part of the first holder member 210, and an insertion groove 213a into which the nut 216 is inserted is formed in the fastening hole 213. As a structure, for example, when the nut 216 is a hexagonal nut, the insertion groove 213a may be formed in a hexagonal shape.

Therefore, the nut 216 can be inserted into the insertion groove 213a and then screwed to the nut 216 by inserting the bolt 217 through the fastening hole 213 from the outside of the first holder member 210. there is. At this time, the nut 216 is inserted into the hexagon-shaped insertion groove 213a, and does not turn freely when combined with the bolt 217, so the tightening operation of the bolt 217 can be performed very easily. When fastening the bolt 217, the crimp terminal (E1) of the electric wire (E) can be inserted into the bolt 217 and fastened.

At this time, the first holder member 210 may be formed to be longer than the second holder member 220. Unlike the second holder member 220, the first holder member 210 has a structure in which a fastening hole 213 is formed, and it is necessary to secure a space S where the bolt 217 can be rotated. Accordingly, by forming the length of the second holder member 220 to be relatively shorter than that of the first holder member 210, the bolt 217 can be easily tightened using a tool in the secured space S.

16 to 18 are diagrams showing the process of inserting the connection clip 200 into the storage groove of the second holder member 220. The connection members 220 form the connection clip 200 and are provided in plural numbers along the vertical direction. ) can be inserted in an isolated state by the storage groove and partition.

Since the first holder member 210 and the second holder member 220 have a structure in which a plurality of first storage grooves 212 and second storage grooves 222 are formed, respectively, forming the connection clip 300 for capacity expansion. Even if the number of connection members 310 and 320 is increased, it is acceptable, and moreover, the overlapping connection members 310 and 320 do not directly face each other, but are connected to the first storage groove 212 and the second storage groove 222. A first partition wall 212a and a second partition wall 222a may be formed in the first storage groove 212 and the second storage groove 222, respectively, so that the product can be stored therein. Accordingly, since the connection members 310 and 320 do not directly contact each other due to the first partition 212a and the second partition 222a when stacked, voltage instability or electrical pulsation may not occur due to contact.

The first body portion 211 and the second body portion 221 of the first holder member 210 and the second holder member 220 have a plurality of first heat radiation holes 214 and second heat radiation holes, respectively ( 224), the connection clip 300 can easily dissipate heat to the outside even if heat is generated due to electrical contact with the busbar (B).

The connection clip 300 may include a pair of connection members 310 and 320 and a connection conductor 330 sandwiched between the lower portions of the connection members 310 and 320, and the connection conductor 330 has 2 It consists of a first coupling hole 331 and a second coupling hole 332, and the first coupling hole 331 is connected to the first holder member 210 and the second holder member when inserted into the connection holder 200. Since the first engaging protrusion 215 and the second engaging protrusion 223, which are the engaging protrusions of 220, are fitted, a more secure coupling state can be maintained.

The second coupling hole 332 of the connecting conductor 330 passes through the bolt 217 and is screwed to the nut 216 of the first holder member 210, thereby allowing the wire E to be connected.

Additionally, since the connecting conductor 330 is covered by the protective case 110, it is not exposed to the outside, and thus unexpected electrical contact due to exposure of the connecting conductor 330 can be prevented.

Figure 20 is a perspective view according to another embodiment of the present invention, and Figure 21 is a front view of a connection holder according to another embodiment of the present invention.

20 and 21, the first body portion 211 and the second body portion 221 of the connection holder 202 according to another embodiment of the present invention have a first coupling hole 211b and a second coupling hole, respectively. The coupling hole 221b is formed to penetrate, and each storage member 121 of the connection cover 120 into which the connection holder 200 is inserted has a first through hole 121b and a second through hole 121c. It is formed, and a coupling pin 127 can be coupled and fixed to the first through hole 121b and the second through hole 121c.

A concave first groove 211c and a second groove 221c may be formed in the first coupling hole 211b and the second coupling hole 221b, respectively.

The connection holder 202 according to another embodiment of the present invention may have the same structure of other parts as the connection holder 200 of the previously described embodiment, and may include a first coupling hole 211b and a second coupling hole ( 221b) may be an additionally formed structure.

Accordingly, the first body portion 211 and the second body portion 221 of the first holder member 210 and the second holder member 210 constituting the connection holder 202 according to another embodiment, respectively, have a first body portion 211 and a second body portion 221. Since the coupling hole 211b and the second coupling hole 221b are formed, the first through hole 121b and the second through hole 121c formed in the plurality of storage members 121 of the connection cover 120 are By inserting and fixing the connection pins 127 through each connection holder 202, the connection holder 202 can reliably maintain its inserted position within the plurality of storage members 121 formed on the connection cover 120.

The storage member 121 of the connection holder 202 and the connection cover 120 according to another embodiment of the present invention is primarily a storage member (211a) formed on both sides of the connection holder 202. 121), and is secondarily coupled by penetrating from the upper part of the storage member 121 to the lower part by the coupling pin 127, thereby forming a double coupled structure, and thus maintaining the coupled state without shaking. there is.

When the busbar (B) is inserted and contacted between the connection members (310) and (320) of the connection clip (300) provided in the connection holder (202), the connection clip (300) is pushed according to the insertion operation with the busbar (B). There is a possibility that it may be pushed out of the insertion position due to force, and thus be pushed within the storage member 121. However, the connection holder 202 according to another embodiment of the present invention has insertion protrusions 211a on both sides and from the top to the bottom. Since it is double held by (221a) and the coupling pin 127, it is possible to prevent the connection holder 202 from being pushed by the insertion force with the busbar (B).

26 and 27, the connection holder 500 according to another embodiment of the present invention includes a frame 510 having a predetermined size and shape, and a connection member 520 provided inside the frame 510. , may include a fastening member 530 fastened to the end of the connection member 520.

The fastening member 530 includes a fastening bolt 531 that penetrates the connecting piece 523 of the connecting member 520 and is inserted into the storage space 511 formed in the frame 510, and is screwed to the end of the fastening bolt 531. It may be composed of a fastening nut 532 that is coupled, and the fastening nut 532 is stored in the storage space 511 formed in the frame 510 and is inserted without spinning during rotation for the fastening operation of the fastening bolt 531. It may be provided in a locked state to maintain its position.

The storage space 511 includes a first storage space 511a in which the fastening nut 532 is stored, a second storage space 511a whose space is narrower than the first storage space 511a, and into which the end of the fastening bolt 531 is inserted. It may be composed of a storage space 511b, and both sides of the first storage space 511a have a straight surface 511c that faces the angled portion of the fastening nut 532 and prevents the fastening nut 532 from spinning. can be formed.

The first storage space 511a automatically forms a low ledge at the boundary with the second storage space 511b, so that the fastening nut 532 inserted into the first storage space 511a is connected to the fastening bolt 531. ), when screwed together, the inserted position can always be maintained without being pushed in the direction in which the fastening bolt 531 is screwed and moving.

Therefore, referring to FIG. 27, when the fastening bolt 531 is rotated, the connecting piece 523 can be pressed while fastening with the fastening nut 532 in a fixed state, and the head portion of the fastening bolt 531 and the connecting piece ( By inserting the busbar (B) between the outer surface of the busbar (B) and passing the fastening bolt (531) through it and then rotating it, it can be fastened simply and reliably, and furthermore, regardless of the installation direction of the busbar (B) Can be combined.

Since the head of the fastening bolt 531 protrudes in an open state, there is no interference in all directions of 360 degrees, and therefore, the installation direction of the busbar (B) can be freely aligned and coupled according to the installation structure. There are advantages to this.

A cover 512 may be detachably provided on the frame 510, and a busbar for electrical connection may be inserted into one surface of the frame 510 to form an insertion hole 511 for contacting the connection member 520. You can.

Additionally, a plurality of fixing holes 514 for fixing the connection holder 500 may be formed in the frame 510.

The connection member 520 includes a first connection piece 521 and a second connection piece 522, and a first connection piece 521 and a second connection piece 522 that are integrally bent with a predetermined width and formed to face each other. ) may be made of a connection piece 523 that connects the ends of the unit to make it integrated.

A fastening member 530 may be fastened to the connecting piece 523, and an electric wire may be connected through the fastening member 530.

An elastic member 540 may be pressed against the outer peripheral surface of the connection member 520. The elastic member 540 may be provided as a first elastic member 541 and a second elastic member 542 to press the first connection piece 521 and the second connection piece 522, respectively.

On one side of the first elastic member 541 and the second elastic member 542, a first contact portion 521a and a second contact portion of the bent portion of the first connection piece 521 and the second connection piece 522 are provided. A first pressing part 541a and a second pressing part 542a bent to press each 522a may be formed.

Here, the connection holder 500 according to another embodiment of the present invention includes a first contact portion 521a and a second contact portion 522a of a pair of first connection pieces 521 and second connection pieces 522. Since the length of the contact point is formed to be long in the width direction, the contact area can be increased accordingly and can be pressed with uniform pressure. Accordingly, when connecting the third connection piece 113 of the electrical connection bar 110, resistance heat due to contact can be reduced and electricity can be smoothly passed.

Referring to FIG. 27 , the width direction length of the first contact portion 521a and the second contact portion 522a may be the length in the y-axis direction, which is the depth direction of the frame 510.

In FIG. 27 , the x-axis direction may be the horizontal direction of the connection holder 500, the y-axis direction may be the depth direction of the connection holder 500, and the z-axis direction may be the vertical direction of the connection holder 500.

In addition, since the first elastic member 541 and the second elastic member 542 are supported on the outer peripheral surfaces of the first connection piece 521 and the second connection piece 522, respectively, the first elastic member 541 and The connection with the electrical connection bar 110 can be reliably maintained in a pressurized state at all times by the second elastic member 542.

In particular, on one side of the first elastic member 541 and the second elastic member 542, the first contact portion 521a and the second contact portion of the bent portion of the first connection piece 521 and the second connection piece 522 are provided. Since the first pressing part 541a and the second pressing part 542a are bent to press the contact portion 522a, the first pressing part 541a and the second pressing part 542a are used to press the first pressing part 542a. Pressure may be concentrated at the first contact portion 521a and the second contact portion 522a of the connection piece 521 and the second connection piece 522. Accordingly, when connecting the connection holder 500 and the electrical connection bar 110, pressure is applied to the entire width direction of the first contact portion 521a and the second contact portion 522a, so that the connection state is secure without shaking. It can be maintained.

In addition, as described above, the connection holder 500 according to another embodiment of the present invention may connect wires through the fastening member 530, but as another example, the wires are joined by welding (soldering, etc.) to electrically connect the wires. A connection can also be established.

Referring to FIGS. 28A, 28B, and 29, in another embodiment of the present invention, the protective cover 600 can be detachably coupled to the first case 100. In the drawing, the second case 400, which is detachably coupled perpendicularly to the first case 100, may have a three-prong type structure in which three connection holders 200 are provided.

The protective cover 600 is formed in plurality with a gap between the first surface 610 forming both sides, the second surface 620 formed on the top of the first surface 610, and the first surface 610. may include a blocking wall 630, and the blocking wall 630 may be formed to have a vertical length shorter than that of the first surface 520.

Additionally, the protective cover 600 may have a structure in which all portions other than the first surface 610 and the second surface 620 are open.

In addition, a coupling member 612 may be formed on one side of the outer surface of the first surface 610 of the protective cover 600 to be detachably coupled to the first case 100, and the coupling member 612 may include a coupling piece. (613) can be formed. Grooves may be provided on both sides by the coupling piece 613, and the coupling piece ( 613) can be detachably coupled.

In addition, referring to FIG. 31, a step portion 640 is formed between the first surface 610 forming both sides of the protective cover 600 and the second surface 620 forming the upper surface of the protective cover 600. can be formed.

The step portion 640 may be formed in a portion facing the first case 100, and a plurality of coupling holes 641 for detachably coupling to the first case 100 are formed in the step portion 640. It can be.

Additionally, a third surface 650 may be formed on one side of the protective cover 600, and a catching groove 651 and an insertion hole 652 may be formed on the third surface 650 along the height direction.

Referring to FIG. 34, the second locking protrusion 126 protruding from the support surface 124 formed at the front end of the cover portion 120 of the first case 100 is inserted and locked into the coupling hole 641, and is inserted into the coupling hole 641. The first locking protrusion 125 may be inserted into the ball 652 and caught thereon. Referring to FIG. 34, the first locking protrusion 125 may pass through the insertion hole 652, and then the hook-shaped end of the first locking protrusion 125 may be caught in the locking groove 651. In addition, a hook-shaped fastening protrusion 128 is formed to protrude on the inside of the support surface 124 of the cover part 120 of the first case 100 and is attached to the first case surface 101 of the first case 100. It can be bound to the formed binding hole 101d.

A plurality of binding protrusions 128 and binding holes 101d may be formed. .

Meanwhile, the first case 100 to which the protective cover 600 is detachably coupled has a first case surface 101 corresponding to the front coupled with the protective cover 600, and both sides of the first case surface 101. It includes a second case surface 102 forming a , and a cover part 120 can be detachably coupled to the upper part of the first case surface 101 and the second case surface 102.

A locking member 103 may be formed on the second case surface 102 to allow the protective cover 600 to be detachably attached.

The locking member 103 may be formed with a locking groove 103a having a cut structure.

In addition, referring to FIGS. 30 and 33, a plurality of through holes are formed in the first case surface 101, and the electrical connection bar 110 penetrates through the through holes and is exposed to the outside of the first case 100. It can be prepared in a state. In another embodiment of the present invention, the through hole may be composed of a first through hole (101a), a second through hole (101b), and a third through hole (101c), and the second through hole (101b) is 3. It is disposed in the center of the two through holes, and the second through hole (101b) may be formed at a higher position than the first through hole (101a) and the third through hole (101c) disposed on both sides of the second through hole (101b). there is.

Additionally, the first through hole 101a and the third through hole 101c may be formed at the same height and may be placed close to the second through hole 101b.

Therefore, as shown in FIG. 33, the plurality of blocking walls 630 formed inside the protective cover 600 are formed shorter than the vertical length of the first surface 510 formed on both sides to form the first through hole. It is possible to prevent interference between (101a) and the third through hole (101c).

In addition, a support surface 124 that is bent to form a height difference may be formed at one end of the cover portion 120, and a first locking protrusion 125 and a second locking protrusion 126 may be formed on the support surface 124. can be formed. One first locking protrusion 125 is formed at a central position of the support surface 124, and a second locking protrusion 126 is formed to protrude at intervals on both sides of the first locking protrusion 125, and the first locking protrusion 125 The protruding height of the locking protrusion 125 may be formed to be higher than the protruding height of the second locking protrusion 126.

Additionally, the end of the electrical connection bar 110 may be equipped with a fastening unit 160 for connection to an electric wire. The fastening unit 160 includes a support member 161 on which the end of the electrical connection bar 110 is supported, a nut 162 inserted into the support member 161, and an insertion tube extending from the lower part of the support member 161. It may include (163).

An insertion hole 163a may be formed in the insertion tube 163 through which the bolt 166 is inserted when coupled with the nut 162. Therefore, the bolt 166 can be maintained in a stably supported state within the insertion hole 163a of the insertion tube 163 without being exposed to the outside, and sparks can be prevented from being transmitted to the surrounding area when connecting wires. .

In other words, the insertion tube 163 surrounds the threaded part of the bolt 166 to block it from the outside, thereby preventing fire due to spark generation and making it possible to use it as a safe electrical product.

The support member 161 includes a first support piece 164 provided in a vertical direction and an insertion hole 164a into which the electrical connection bar 110 is inserted, and a second support piece 164 coupled with a nut 162 and disposed in a horizontal state. It may be made of a support piece 165.

The nut 162 may have an angled shape like a hexagonal nut, penetrates the through hole 110b formed at the end of the electrical connection bar 110 through the bolt 166, and is fastened by screwing to the nut 162. It can be done, and in this case, the crimp terminal formed at the end of the wire can be inserted into the bolt 166 and then combined.

Accordingly, when combining the bolt 166 with the nut 162, the nut 162 can maintain the inserted state without rotating within the second support piece 165, and thus the bolt 166 can be more easily installed. It can be surely screwed together with the nut 162.

When the electrical connection bar 110 protrudes through the first through hole 101a and the third through hole 101c, a fastening unit 160 can be provided to connect the electric wire. However, when the fastening unit 160 is installed, the length of the blocking wall 630 formed inside the protective cover 600 is shortened, so that the lower part of the blocking wall 630 and below is open, so that the first through hole Even if the fastening unit 160 is coupled to the electrical connection bar 110 protruding through (101a) and the third through hole 101c, it can be coupled without interference.

In addition, in the present invention, there may be no need to provide a fastening unit 160 for connecting wires to the electrical connection bar 110 protruding through the second through hole 101b formed at the highest position.

Since a blocking wall 630 is provided on both sides of the second through hole 101b to block it, it is connected to the lower part of the electrical connection bar 110 by using only the bolt 166 and the nut 162 without the fastening unit 160. Even if exposed, sparks caused by electrical conduction can be prevented from being transmitted to the surrounding area. Of course, the fastening unit 160 may be coupled to the electrical connection bar 110 protruding through the second through hole 101b.

However, since the first through hole 101a and the third through hole 101c are located lower than the second through hole 101b, the bolt 166 is used to connect the end of the electrical connection bar 110 and the wire. ) and the nut 162 alone, the threaded portion of the bolt 166 may be exposed outside the lower end of the protective cover 600. Therefore, when electricity is applied while the bolt 166 is exposed to the outside, there is no partition blocking the surroundings, so if an unexpected spark occurs, it may have a negative impact (such as a fire) on the surroundings.

Therefore, in order to solve this problem, the present invention attaches a fastening unit 160 to the electrical connection bar 110 protruding through the first through hole 101a and the third through hole 101c to secure the bolt 166. prevents it from being exposed to the outside and prevents sparks from being transmitted to surrounding areas due to electrical conduction.

The protective cover 600 of the present invention can be provided in an appropriate size according to the protruding length of the electrical connection bar 110 protruding from the first case 100, and the through hole formed in the first case surface 101 is It can be formed in various numbers, such as 3 or 4, and a protective cover can be provided accordingly.

Additionally, referring to FIGS. 35 and 36, when the protective cover 600 of another example of the present invention is coupled to the first case 100, it can be easily coupled and separated in a sliding manner.

That is, a plurality of locking protrusions 610 a are formed on the inner surface of the first surface 610 constituting the protective cover 600, and correspond to the side of the first case 100 to which the protective cover 600 is coupled. A locking groove 102a may be formed on the outer surface of the second case surface 102 to allow locking. When the protective cover 600 is coupled to the first case 100 from the top to the bottom, the locking protrusion 610a can be naturally inserted into the locking groove 102a formed on the outer surface of the second case surface 102 and caught. Conversely, if the protective cover 600 is to be removed by pulling it upward from the first case 100, the locking protrusion 610 may separate from the locking groove 102a and fall.

Accordingly, the protective cover 600 of another example can be very easily assembled and separated from the first case 100 in a sliding manner.

10... Electrical connection connector
100... first case 101... first case side
101a... first through hole 101b... second through hole
101c... Third through hole 101d... Binding hole
102... Second case surface 102a... Locking groove
103... locking member 103a... locking groove
110... electrical connection bar 110a... fastener
110b... through hole
111... 1st connection piece 111a... wire fastening hole
112... Second connection piece 112a... Fastening hole
113... Third connection
120... Cover part 121... Locking jaw
122... through hole 122a... first through hole
122b... second through hole 123... blocking member
124... support surface 125... first locking protrusion
126... second locking protrusion 128... fastening protrusion
130... Bulkhead
132... Access road 134... Fastening protrusion
140... Connector 141... Locking protrusion
142... fastening protrusion 143... coupling hole
150... Insulating tube 151... Locking jaw
152... Through hole 153... Locking pin
154... coupling hole 155... locking pin
156... Extension 157... Locking pin
160... Fastening unit 161... Support member
162... nut 163... insertion tube
163a... insertion hole
164... first support piece 165... second support piece
166... bolt
200, 202... connection holder 210... first holder member
211... first body portion 211a... fitting projection
211b... first coupling hole 211c... first groove
212... first storage groove 212a... first bulkhead
213... fastening hole 213a... insertion groove
214... first heat dissipation hole 215... first blocking protrusion
216...nut 217...bolt
218... Fitting projection 219... Fitting groove
220... second holder member 221... second body portion
221a... fitting protrusion 221b... second coupling hole
221c... 2nd home
222... second storage groove 222a... second bulkhead
223... second locking protrusion 224... second heat radiation hole
226... Fitting projection 227... Fitting groove
300... connection clip 310,320... connection member
330... connection conductor 331... first coupling hole
332... second coupling hole 340... elastic member
400... Second case 402... Storage space
410... opening/closing cover 420... coupling hole
500... connection holder 510... frame
511... storage space portion 511a... first storage space portion
511b... second storage space 511c... straight surface
512... cover 514... fixing hole
520... Connection member 521... First connection piece
522... second connection piece 521a... first contact portion
522a... second contact part 523... connection piece
530... fastening member 531... fastening bolt
532... fastening nut 540... elastic member
541... first elastic member 542... second elastic member
541a... first pressing part 542a... second pressing part
600... protective cover 610... first side
610a... Stopper
612... coupling member 613... coupling piece
620... second side 630... barrier
640... step section 641... coupling hole
650... Third side 651... Locking groove
652... insertion hole
B... busbar d1,d2... length
E... wire E1... crimp terminal
S... space

Claims (17)

delete delete delete delete a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A protective cover is detachably coupled to the front of the first case to protect the electrical connection bar penetrating from the outside,
A step is formed on one side between the first surface forming both sides of the protective cover and the second surface forming the upper surface of the protective cover,
The step portion is formed in a portion facing the first case,
A plurality of coupling holes are formed in the stepped portion for detachably coupling to the first case,
An electrical connection connector in which a second locking protrusion protruding from a support surface formed at the front end of the cover portion of the first case is inserted and locked into the coupling hole.
a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A protective cover is detachably coupled to the front of the first case to protect the electrical connection bar penetrating from the outside,
A third side is formed on one side of the protective cover,
A locking groove and an insertion hole are formed along the height direction on the third surface,
A first locking protrusion is inserted into the insertion hole and caught,
The first locking protrusion penetrates the insertion hole, and then an end of the first locking protrusion is caught in the locking groove.
a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A protective cover is detachably coupled to the front of the first case to protect the electrical connection bar penetrating from the outside,
The protective cover includes a first surface forming both sides and a second surface formed on an upper part of the first surface,
A coupling member is formed on one outer side of the first surface to be detachably coupled to the first case,
A connecting piece is formed on the connecting member, and grooves are provided on both sides by the connecting piece,
An electrical connection connector in which the coupling piece is detachably coupled to a locking groove of a locking member formed on a first case surface of the first case.
delete a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A protective cover is detachably coupled to the front of the first case to protect the electrical connection bar penetrating from the outside,
A fastening unit for connection to an electric wire is coupled to an end of the electrical connection bar protruding from the first case,
The fastening unit is,
a support member on which an end of the electrical connection bar is supported;
a nut inserted into the support member in a non-rotating state;
an insertion tube extending from a lower portion of the support member; Includes,
An electrical connection connector that connects the wires by inserting them while combining with a nut through a bolt.
According to clause 9,
An insertion hole is formed in the insertion tube,
An electrical connection connector that prevents the occurrence of fire due to spark generation by energization by preventing the threaded part of the bolt, which is coupled with the nut for connecting the wire, from being exposed to the outside in the insertion hole. According to clause 5,
The electrical connection bars are provided in plural numbers,
The plurality of electrical connection bars have different heights and protrude from the first case surface of the first case,
A fastening unit for connection to an electric wire is coupled to an end of the electrical connection bar protruding from the first case,
The protective cover includes a plurality of blocking walls formed at intervals such that the electrical connection bar is disposed between the plurality of first surfaces,
The protruding ends of the plurality of electrical connection bars are disposed between the blocking walls of the protective cover,
Among the plurality of electrical connection bars, the threaded portion of the bolt fastened to the end of the electrical connection bar for wire connection is coupled with the fastening unit only to the electrical connection bar corresponding to the position where the threaded portion of the bolt is exposed to the outside. An electrical connection connector that prevents
According to clause 9,
The support member is,
a first support piece provided in a vertical direction and having an insertion hole into which the electrical connection bar is inserted;
a second support piece to which the nut is coupled and disposed in a horizontal state; An electrical connection connector comprising:
a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A connection clip is provided inside the connection holder,
The connection holder includes a plurality of holder members that are detachable from each other so that the connection clip is provided,
The connection clip is provided with a pair of connection members,
An electrical connection connector in which one or more storage grooves are formed inside the holder member to individually accommodate the connection members of the connection clip.
According to claim 13,
The plurality of holder members are:
It includes a first holder member and a second holder member that are detachably coupled to form a pair,
The length of the first holder member in the direction in which the connection clip is inserted is formed to be longer than the length of the second holder member,
A connection conductor provided on the connection clip is passed between one end of the first holder member and an end of the second holder member to facilitate the fastening operation of the fastening member coupled to connect the electric wire to the first holder member. An electrical connection connector in which a space for the connection is formed.
a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
A protective cover is detachably coupled to the front of the first case to protect the electrical connection bar penetrating from the outside,
The protective cover is,
It includes a first face forming both sides, a second face formed on the top of the first face,
It includes a plurality of blocking walls formed at intervals such that the electrical connection bar is disposed between the plurality of first surfaces,
A locking protrusion is formed on the inside of the first surface,
An electrical connection connector in which a locking groove into which the locking protrusion is locked is formed on the outside of a second case surface forming a side of the first case to which the protective cover is coupled.
a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
The plurality of electrical connection bars are inserted into first and second positions with different heights when arranged in the first case,
The connection bar at the first position includes a first connection piece protruding to the outside of the first case, extending from the first connection piece, bent and inserted into the inside of the first case, and lower than the first connection piece. It includes a second connection piece formed by extending to a position, and a third connection piece formed by bending from the second connection piece,
The electrical connection bar arranged from the first position toward the lower part of the first case at a lower position includes a first connection piece protruding to the outside of the first case, extending from the first connection piece, and forming the first case. An electrical connection connector including a third connection piece that is inserted into the interior and bent at the same time.
a first case provided with a plurality of electrical connection bars;
a second case detachably coupled to the first case and provided with a plurality of connection holders connected to the electrical connection bar; Including,
In a portion of the electrical connection bar inserted into the first case,
An electrical connection connector in which a plurality of fastening holes are formed at intervals such that the length protruding from the inside of the first case to the outside is variable.