JP3414211B2 - Circuit breaker connection structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker connection structure having a receiving blade for inserting and connecting a conductive bar in a distribution board or a control board.

[0002]

2. Description of the Related Art Generally, in a branch circuit breaker in a distribution board, for example, a branch conductive bar is screwed to a main conductive bar connected to a main circuit breaker,
The branch circuit breaker is screw-connected to the branch conductive bar. However, when the conductive bar and the circuit breaker are connected, it is often forgotten to tighten the screw, and heat may be generated due to poor contact at the connection point, which may cause a fire in the worst case. In order to minimize the screwing work of this circuit breaker, a circuit breaker in which a conductive bar is inserted and connected (Japanese Patent Application No. 9-46438) has been proposed.

For example, as shown in FIG. 19, an insertion groove 200 for a conductive bar (not shown) is provided on one side of the circuit breaker.
Inside the blade 2 connected to the terminal 202 of the circuit breaker
01 is provided. This circuit breaker is a multi-pole type, and the receiving blades 200 for inserting and connecting the conductive bars are arranged in upper and lower two stages at substantially the same distance from the inserting end face.

[0004]

However, since the tips of the receiving blades 200 into which the conductive bars are inserted are substantially the same distance, the insertion load for inserting the conductive bars becomes large, and there is a problem that it is difficult to connect the conductive bars. Therefore, an object of the present invention is to provide a connection structure for a circuit breaker in which the insertion load can be reduced and a conductive bar can be easily connected.

[0005]

According to a first aspect of the present invention, there is provided a circuit breaker connection structure, comprising: a mounting base fixed to at least upper and lower two conductive bars; and an insertion groove into which each conductive bar is inserted. A circuit breaker that is attached to the mounting base, and the conductive bar that is disposed inside the insertion groove in the circuit breaker and that is inserted into the insertion groove when the circuit breaker is attached. At least two conductive connecting members each having a receiving blade to be inserted and connected, and a posture before attachment of the circuit breaker inclined so that the receiving blade approaches only the uppermost conductive bar provided on the mounting base. And a guide portion for slidably guiding the circuit breaker between the mounting posture of the circuit breaker in which the receiving blade is connected to all of the conductive bars.
And the circuit breaker has the insertion groove,
If you install this adapter and an adapter with a blade
Together with the circuit breaker body that electrically connects the above-mentioned receiving blade
The circuit breaker body is connected to or separated from the conductive bar.
The first hooking recess is provided at the front end in the direction of
A hooking recess is provided, and the mounting base is the first hooking recess.
Engaging with the engaging claw and the second hooking recess
Elastic claws, and the guide is attached to the adapter
Is slid on the engaging claw to engage the first hooking recess with the engaging portion.
The engaging claw guide portion for guiding the compound claw and the guide from the elastic claw.
Of the circuit breaker body extending in the direction away from the electric bar
A guide piece for slidingly guiding the vicinity of the second hooking recess
It consists of

According to the circuit breaker connection structure of the first aspect, the circuit breaker is guided by the guide portion and rotates from the tilted posture to the mounting posture while sliding, so that the uppermost conductive bar first moves. Since it is connected to the blade, and then the lower conductive bar is connected to the blade, not all conductive bars are connected to the blade at the same time, thus reducing the insertion force connecting to the conductive bar. It is possible to easily connect to the conductive bar. Further, since the circuit breaker is attached while being guided from the inclined posture to the guide portion, the work of connecting to the conductive bar becomes easy. In addition, the engaging claw guide section is guided to the engaging claw to block the circuit.
By mounting the rear end of the breaker on the elastic claw guide piece,
An oblique posture is obtained, and the circuit is cut off along the engaging claw and the guide piece.
If you slide the device, you can connect to the conductive bar and disconnect the circuit.
Since the circuit breaker is mounted on the mounting base, align the circuit breaker
It can be easily done.

[0007]

[0008]

The connection structure of the circuit breaker according to claim 2 is
In Claim 1, the said receiving blade is arrange | positioned mutually staggered in the insertion direction of the said conductive bar.

According to the connection structure of the circuit breaker of the second aspect , in addition to the same effect as the first aspect, the insertion force when connecting the conductive bar to the receiving blade can be dispersed, and the conductive bar can be distributed. The insertion force for connection can be reduced, and connection to the conductive bar is easy.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIGS. That is, this circuit breaker connection structure includes the mounting base 62, the circuit breaker 9, the conductive connecting member 3, and the guide portion 102. The mounting base 62 fixes the conductive bars 4 arranged in the upper and lower three stages. The mounting base 62 is provided with an engaging claw 61 that engages with a first hooking recess 60a and an elastic claw 105 that engages with a second hooking recess 60b, which will be described later. Mounting base 62 of the embodiment
Screws 11 to the frame 110 that is attached to the distribution board case, etc.
1 and the conductive bar 4 is connected to the main circuit breaker.

The circuit breaker 9 has an insertion groove 5 into which the conductive bar 4 is inserted, and is attached to a mounting base 62. This circuit breaker 9 has an adapter having an insertion groove 5 and a receiving blade 8 to be described later, and a main body of the circuit breaker 9 to which the adapter is attached and the receiving blade 8 is electrically connected. The main body of the circuit breaker 9 is provided with the first hooking recess 60a at the front end in the direction of contacting and separating from the conductive bar 4, and the second hooking recess 60b at the rear end. 101 is a circuit breaker case of the circuit breaker 9.

The two conductive connecting members 3 are connected to the circuit breaker 9
There is a receiving blade 8 which is arranged inside the inner insertion groove 5 and which inserts and connects the conductive bars 4 inserted in the insertion groove 5 with the circuit breaker 9 attached. The guide portion 102 is provided on the mounting base 62, and has a posture before mounting the circuit breaker 9 that is inclined so that the receiving blade 8 approaches only the uppermost conductive bar 4.
The circuit breaker 9 is slidably guided between itself and the mounting posture of the circuit breaker 9 in which the receiving blades 8 are connected to all of the conductive bars 4.
The guide portion 102 is provided on the adapter and slides on the engaging claw 61 to guide the first hooking recess 60 a to the engaging claw 61, and a direction in which the elastic claw 105 moves away from the conductive bar 4. In the figure, the guide piece 10 is extended so as to be inclined in a direction away from the mounting base 62 and is slidably guided in the vicinity of the second hooking recess 60b of the main body of the circuit breaker 9.
It consists of 7. Further, the engagement claw guide portion 106 is, as shown in FIGS. 2 and 6, the slide groove 1 that fits into the engagement claw 61.
08, hanging from the bottom of the slide groove 108,
It is composed of a pair of guide pieces 109 which are mounted on the upper end of the engaging claw 61 and guide the first hooking recess 60 a to the engaging claw 61 and which have a substantially inverted trapezoidal inclination. The elastic claw 105 is formed by bending a leaf spring into a substantially V shape so as to be hooked in the second hooking recess 60b, and a guide piece 107 is extended to the tip thereof. 1
Reference numeral 15 is a cover material provided on the upper surface of the uppermost conductive bar 4.

When the circuit breaker 9 is guided by the guide portion 102 and rotates from the inclined posture to the mounting posture while sliding, the uppermost conductive bar 4 is first connected to the receiving blade 8 and then the lower stage thereof. Since the conductive bars 4 are connected to the receiving blades 8, not all the conductive bars 4 are connected to the receiving blades 8 at the same time. Therefore, the insertion force for connecting to the conductive bars 4 can be reduced, and the conductive bars can be reduced. 4 can be easily connected. Further, since the circuit breaker 9 is attached while being guided from the inclined position to the guide portion 102, the work of connecting to the conductive bar 4 becomes easy.

Further, the engaging claw guide portion 106 is guided by the engaging claw 61 and the rear end side of the circuit breaker 9 is guided by the elastic claw 105.
When the circuit breaker 9 is placed on 07, the inclined posture of the circuit breaker 9 can be obtained, and by sliding the circuit breaker 9 along the engaging claw 61 and the guide piece 107, the conductive bar 4 can be connected and the engaging claw 61 can be connected. Since the circuit breaker 9 is attached to the mounting base 62 by being caught by the first hooking recess 60a and the second hooking recess 60b being hooked by the elastic claw 105, the position of the circuit breaker 9 can be easily aligned.

The insertion load with respect to the insertion amount of the conductive bar 4 will be described with reference to FIG. A ₁ is a case where all the receiving blades 8 of the conventional example are simultaneously connected to the conductive bar 4.
A ₂ is an example of this embodiment and is a case where the receiving blades 8 are sequentially connected from the upper conductive bar 4 to the lower conductive bar 4.
A ₃ and A ₄ are the insertion loads when the conductive bar 4 is connected to one receiving blade 8 with different insertion amounts, and A ₂ is the sum of A ₃ and A _4. . This FIG.
From this, it is understood that the present invention has a smaller insertion load than the conventional example.

Hereinafter, the structure of the receiving blade 8 and the case 80 of the adapter will be mainly described in detail. The connection conversion adapter connected to the screw type terminal 10 of the circuit breaker 9 has a case 80 including the first case 1 and the second case 2, and the receiving blade 8 of the conductive connecting member 3. The case 80 has an insertion groove 5 into which a plurality of conductive bars 4 arranged in a plurality of upper and lower stages are inserted, and a storage chamber 80a communicating with the insertion groove 5. Further, the insertion groove 5 has a storage chamber 80a from its edge.
A guiding portion 5a that extends to the side and guides the conductive bar 4 is formed. The guiding portions 5a are formed so that the mutual spacing becomes narrower on both sides of the insertion groove 5 on the storage chamber 80a side.

The case 80 has the insertion groove 5 and the opening 6 on the opposite side of the insertion groove 5 from the first case 1.
And an insertion hole 7 through which the terminal connecting portion 11 is inserted.
The second case 2 is attached to the opening side of the case 1. The first case 1 has a box shape in which one side of a rectangular parallelepiped is opened, and an insertion groove 5 is formed on an outer surface of an outer wall 30 which is a back wall of the opening 6, and the opening 6 is formed at the bottom of each insertion groove 5. A through hole 21 communicating with each other is formed. Locking portions 13 are provided on the inner surfaces of both end walls in the longitudinal direction of the first case 1, that is, the inner surfaces of the upper wall 31 and the lower wall 32 of FIG. These locking portions 13 are divided into two by a vertical wall 14 standing on the inner surfaces of the upper wall 31 and the lower wall 32, and each of the divided locking portions 13 is divided.
To the upper wall 30 and the lower wall 32 in parallel with the walls, and the jig insertion holes 15 that communicate with the case outer surface of the outer wall 30 are provided. Further, a horizontal partition wall 16 is provided on the inner surface of the outer wall 30 between the insertion grooves 5 for separating the receiving blades 8 facing the insertion grooves 5 of the first case 1, and each insertion groove is formed in a direction intersecting the insertion grooves 5. A vertical partition wall 17 is formed continuously with the vertical partition wall 14 so as to extend over the horizontal partition wall 5 and extend toward the opening 6 side of the horizontal partition wall 16. Further, between the insertion grooves 5 of the first case 1, a mounting portion 22 of the insulating plate 18 for isolating the conductive bar 4 inserted into each insertion groove 5 is formed, and an insertion groove of the insulating plate 18 is formed on the outer surface of the horizontal partition wall 16. It is provided by doing. As shown in FIG. 2, 19 is a terminal cover that covers the upper surface of the screw type terminal 10 of the circuit breaker 9, and is provided integrally with the first case 1. Reference numeral 20 is a terminal operating hole, and 35 is a separator that covers the upper notch 36 of the terminal 10 of the circuit breaker 9, and is integrated so as to be continuous with the side of the terminal cover 19 and the side of the first case 1. It is provided in.

The second case 2 has an insertion hole 7 and is attached to the opening 6 side of the first case 1 to close the opening 6 of the first case 1. In the embodiment, the first case 1 and the second case 2 are fitted in a similar manner to the first case 1 so that the second case 2 is attached to the first case 1 in a size that fits in the first case 1.
At an opening edge of the side wall at the end portion in the longitudinal direction, a hooking portion 23 that extends and is locked by the locking portion 13 of the first case 1 is formed. These hooking portions 23 are inserted by pushing the jigs through the jig insertion holes 15 of the first case 1 and pushing them in.
A tapered surface 24 is formed on the hook portion 23 so that the hook can be disengaged from the locking portion 13. Further, each hooking portion 23 is formed in a bifurcated shape so as to form a gap into which the vertical wall 14 or the vertical partition 17 enters when the second case 2 is fitted to the first case 1, and the vertical partition 17 is formed on the second case 2. 25 for engaging with
Is provided. The engaging partition wall 25 is a bifurcated hook portion 23.
The guide groove of the conductive connecting member 3 is formed at a predetermined position of each plate, and is composed of two vertical plates which are integrated with the hook portions 23 at both ends with a gap 25a communicating therebetween. Two
8 and 29 are formed. Further, the slit-shaped insertion hole 7 is formed so as to face the guide grooves 28 and 29 of the bottom wall, which is the inner wall facing the opening of the second case 2. To assemble, the opening side of the second case 2 is fitted from the opening 6 side of the first case 1, the vertical partition wall 17 is fitted between the bifurcated hook portion 23 and the engaging partition wall 25, and the hook portion 23 is locked. When you get over and hook it by elasticity, it becomes a connected state. When removing, the jig is inserted into the jig insertion hole 15 and the tapered surface 24 of the hook portion 23 is pushed to remove the hook portion 23 from the locking portion 13.

The receiving blade 8 of the conductive connecting member 3 has a case 80.
Which is disposed inside the insertion groove 5 in the storage chamber 80a and contacts the surface of the conductive bar 4 inserted from the insertion groove 5,
It has a pair of elastic guide plates 3a and 3b into which the receiving blade 8 is inserted. And as shown in FIGS. 12 to 14,
The tip 51 of the guide plates 3a, 3b of the blade 8 is arranged at a wider interval than the guiding portion 5a, and the tip 51 of the blade 8 is guided.
It extends to the back side of a and is arranged with a constant gap 5b on the back side of the guiding portion 5a.

The terminal connecting portion 11 is electrically connected to the receiving blade 8 and is also inserted from the case 80 to the outside and screwed to the circuit breaker 9, whereby the circuit breaker 9 is electrically connected to the conductive bar 4. Connect to each other. The terminal connecting portion 11 is inserted through the insertion hole 7 of the second case 2 to the outside. The intermediate portion between the blade 8 and the terminal connecting portion 11 has a connecting portion 12 that forms a step between the blade 8 and the terminal connecting portion 11 and abuts along the inner surface 2a of the second case 2. In the embodiment, the pair of conductive connecting members 3 including the receiving blades 8 are arranged in the spaces partitioned by the horizontal partition wall 16 and the vertical partition wall 17 of the first case 1 and the engaging partition wall 25 of the second case 2. Installed, especially the blade 8
Among the plurality of spaces partitioned by the horizontal partition wall 16, they are arranged in spaces mutually diagonally arranged by being vertically displaced from each other.

The receiving blade 8 is a guide plate 3a, which constitutes the above-mentioned two conductive connecting members 3 which sandwich the conductive bar 4 from both front and back surfaces.
3b and a substantially U-shaped pressure contact member 47 that sandwiches the guide plates 3a and 3b from the width direction and prevents the guide plates 50 from expanding beyond a predetermined distance. Three
The guide plates 3a and 3b are inclined so that the distance between the guide plates 3a and 3b becomes narrower from the base end portion to the tip end of the a and 3b. The terminal connecting portion 11 has two conductive plates 3a and 3b superposed on each other, but is bent and formed so as to be folded around the tip of the terminal connecting portion 11. That is, the conductive connecting member 3 including the conductive plates 3a and 3b has a long hole 41 formed in the longitudinal direction in the central portion of the belt-shaped conductive plate 40 as shown in FIG. The sheet is folded and folded in a substantially Z shape for forming the connecting portion 12 with the folded portion in one end side. In this case, the substantially Z-shaped bent portions 42, 42 ',
Of the parts 43, 43 ', the bent part 42, which is close to the two-fold part,
42 'folds to the same position, but far folds 43, 4
3'is bent at different positions to form a gap 44 between both pieces as shown in FIG. However, the positions of the bent portions of the pair of conductive connecting members 3 are different from each other. Further, the receiving blade 8 is provided with a wide space by tilting the pieces 50 on the tip side of the bent portions 43, 43 'so as to approach each other, and further bending the tip ends 51 in opposite directions to open the legs. Is forming. In addition, a U-shaped gripping piece 4 is attached to this tip.
The pressure contact member 47 provided with 6 is fitted. On the other hand, in the double-folded portion, a bifurcated terminal connecting portion 11 is formed by folding the central portion of the long hole 41 in half, and a protrusion 49 that engages with the guide grooves 28, 29 of the second case 2 is formed at one side edge thereof. It is provided.

In order to position the conductive connecting member 3, a positioning projection 53 is provided on the side of the piece 50 forming the tip of the guide plates 3a, 3b on the side of the receiving blade 8. In order to position the pressure contact member 47, the pressure contact member 47 is provided with positioning portions 54 and 55 and a displacement prevention piece 83. The positioning portion 54 of the embodiment projects on the side edge of the U-shaped intermediate piece on the side where the sandwiched piece 46 is located, and the positioning portion 55 projects on the tips of the U-shaped end pieces to prevent misalignment 83. Is projectingly provided on the opposite side of the sandwiched piece 46 of the U-shaped end pieces. In order to support the pressure contact member 47 at a predetermined position with respect to the guide plates 3a and 3b of the receiving blade 8 with the first case 1 attached to the second case 2, one side portion of the positioning portion 55 of the pressure contact member 47 and Abutting portion 8 that abuts the side edge of the character-shaped intermediate piece on the side opposite to the positioning portion 54.
2 is provided in the second case 2. Contact part 8 of the embodiment
2 also serves as a side edge of both side walls of the second case 2, that is, an opening edge and a side edge of the engaging partition wall 25. In order to position the press-contact member 47 with the contact portion 82, the case-side positioning portion 56 that receives the other side portion of the positioning portion 54 and the positioning portion 55, as shown in FIGS. 2, 7 and 9, First
Steps are formed on the inner surface of the insertion groove 5 of the case 1 and on both surfaces of the vertical partition wall 17. The positioning part 56 has a piece 50.
The positioning protrusion 53 is also locked to position the piece 50 on the first case 1. Further, a positioning portion 84 for positioning the displacement prevention piece 83 of the pressure contact member 47 is provided in the second case 2 to prevent displacement of the conductive plates 3a, 3b in the width direction. The positioning portion 84 of the embodiment is also used as both the side walls of the second case 2 forming the contact portion 82 and the surface adjacent to each side edge of the engaging partition wall 25.

In the assembly, the projection 49 of the terminal connecting portion 11 is guided by the guide grooves 28 and 29, and is inserted into the insertion hole 7 of the bottom wall of the second case 2 to support the connecting portion 12 against the bottom wall.
At this time, the edge portion of the press contact member 47 on the side opposite to the positioning portion 55 and the positioning piece 54 of the U-shaped intermediate piece has an abutting portion 82.
The tip of the gripping piece 46 slides on the piece 50 and is positioned at the bent portion of the tip 51, and the tip 51 of the receiving blade 8 opens. In this state, when the second case 2 is fitted into the first case 1 as described above, the receiving blades 8 are obliquely positioned as shown in FIG. 5 due to the Z-shaped bending position of the conductive connecting member 3. 5
, The tip 51 is located on the back side of the guiding portion 5a, and the positioning protrusion 53 is locked to the positioning portion 56.
The positioning portions 54 and 55 of the press contact member 47 are positioned by the positioning portion 56.
And the blade 8 is positioned in this manner. When the terminal connecting portion 11 is screwed into the terminal 10 through the driver through the hole 20, the first case 1 and the second case 2 are attached to the circuit breaker 9. Then, when the circuit breaker 9 is installed, the conductive bar 4 and the insulating plate 18 are pushed so as to face the insertion groove 5 and the mounting portion 22 of the first case 1, so that the conductive bar 4 is moved as shown in FIG. It is inserted into the receiving blade 8 and electrically connected, and the mounting portion 22 has the insulating plate 18
Is inserted. Although FIG. 15 shows an example in which the conductive bar 4 is deviated to the lower position in the insertion groove 5, the receiving blade 8 is also formed in this case.
Since the tip end 51 of the blade is located on the back side of the guiding portion 5a, the conductive bar 4 does not hit the tip 51 of the blade 8 and break the blade 8.

In this embodiment, since the tip 51 of the receiving blade 8 is located on the back side of the guiding portion 5a, the movement of the receiving blade 8 is restricted within a predetermined range, so that the insertion is always performed as shown in FIG. The positions of the groove 5 and the receiving blade 8 can be matched. Therefore, as shown in FIGS. 14 and 15, it is possible to prevent the conventional blade from being deformed or broken. Further, a vertical partition wall 17 for separating a plurality of receiving blades 8 from each other is formed in the case 80, and the receiving blades 8 are vertically displaced to form a case 80.
Since it is arranged in the storage chamber 80a, the insulation between the electrodes can be achieved.

Since the mounting portion 22 of the insulating plate 18 for isolating the conductive bar 4 inserted into each of the insertion grooves 5 is provided between the insertion grooves 5 of the case 80, the insulating plate 18 can be attached. The space between them can be narrowed, and the size can be made compact when they are arranged in a distribution board. At least 2
Since it has the pressure contact member 47 that sandwiches the guide plates 3a and 3b,
This is stronger than the case where one guide plate 3a, 3b is formed in a U shape to form the receiving blade 8. The pressure contact member 47 is used to guide the guide plate 3.
Since a and 3b are sandwiched, the contact area can be widened by increasing the number of guide plates 3a and 3b. Moreover, the one in which the receiving blade 8 is integrally formed in a substantially U-shape with a thick guide plate is used. Elasticity can be obtained as compared with the case where a rigid body is used and elasticity cannot be obtained, and it can be used for high voltage. For this reason, the receiving blade 8 has high mechanical strength, is less likely to be damaged, and can easily have elasticity.

Since the conductive plates 3a and 3b are bent and formed so as to be folded around the tip of the terminal connecting portion 11, the receiving blade 8 to the terminal connecting portion 11 are integrally formed by one conductive plate. By bending the tip of the terminal connecting portion 11, the receiving blade 8 can be made into two guide plates 3a and 3b. Therefore, the manufacturing work of the guide plates 3a and 3b can be facilitated and the manufacturing equipment can be improved. .

The case 80 has a first case 1 having an insertion groove 5 and an opening on the side opposite to the insertion groove 5, and an insertion hole through which the terminal connecting portion 11 is inserted. And a second case 2 attached to the
With the first case 1 attached to the case 2, the pressure contact member 47 is attached.
Is provided at a predetermined position of the guide plates 3a and 3b, and the two guide plates 3a and 3b of the receiving blade 8 are inclined so that the interval becomes narrower from the base end side to the tip end side. For,
When the press contact member 47 is sandwiched between the base end sides of the two guide plates 3a and 3b, the front end sides of the guide plates 3a and 3b are narrowed or held in a closed state, and an object is sandwiched between the guide plates 3a and 3b or the guide plate 3a. , 3b can be prevented from being deformed, and when the second case 2 is attached to the first case 1, the abutting portion 82 abuts on the pressure contact member 47 and the two guide plates 3b.
By moving to a predetermined position on the tip side of a, 3b, the tips of the two guide plates 3a, 3b corresponding to the receiving blade 8 open due to their elasticity, and the conductive bar 4 can be connected.

The pressure contact member 47 is attached to the first case 1 by a contact portion 82.
Since the positioning portion 56 for positioning between and is provided, the position of the pressure contact member 47 is always constant, the force for holding the conductive bar 4 can be constant, and the contact pressure of the conductive plates 3a and 3b to the conductive bar 4 is constant. Can be even. Guide plate 3
Since the displacement prevention piece 83 for preventing the displacement of the a and 3b in the width direction is provided in the pressure contact member 47, and the positioning portion 84 for positioning the displacement prevention piece 83 is provided in the second case 2, the pressure contact member 47 is guided. It is possible to prevent the plates 3a and 3b from moving in the width direction, and the assembling work of the first case 1 and the second case 2 becomes easy.

Each conductive bar 4 is inserted into each insertion groove 5 of the first case 1.
From at least one of these conductive bars 4
One is connected to the receiving blade 8 of the conductive connecting member 3, and the terminal connecting portion 11 of this conductive connecting member 3 is screwed to the circuit breaker 9. Therefore, the connecting work between the circuit breaker 9 and the conductive bar 4 is performed. Can be facilitated. Further, since the conductive connecting member 3 is arranged between the first case 1 and the second case 2,
The arrangement position of the receiving blade 8 of the conductive connecting member 3 can be displaced, and the circuit breaker 9 can be used even when the rated voltage is different.
Common parts can be achieved. In addition, the first case 1 and the second case
Since the conductive connecting member 3 is housed between the cases 2, the work of housing the conductive connecting member 3 becomes easy. Further, a connecting portion 12 that is provided with a step between the receiving blade 8 and the terminal connecting portion 11 of the conductive connecting member 3 and abuts along the inner surface of the second case 2.
Since the connection is made by means of, the insertion force when inserting the conductive bar 4 into the receiving blade 8 can be absorbed between the connecting portion 12 and the second case 2, and the conductive connecting member 3 is less likely to be deformed.

Since the second case 2 is fitted in the first case 1, the side walls are doubled, so that when the circuit breakers 9 are arranged side by side, the conductive connecting members 3 of the circuit breakers 9 are arranged side by side. The insulation is improved. Since the locking portion 13 is formed on the inner surface of the first case 1, once the first case 1 and the second case 2 are combined, it becomes difficult to disengage, and for example, the conductive connecting member 3 disposed between the cases. It is possible to prevent damage due to a difference in the rated voltage of the circuit breaker 9 when the conductive connecting member 3 is returned to a position different from the original position when it pops out of each case.

The engaging portion 13 is divided into two by the vertical wall 14, the hook portion 23 is formed in a bifurcated shape, and the jig inserting hole 15 is communicated from the engaging portion 13 to the outer surface of the case. By passing a dedicated jig through the insertion hole 15, the hooking portion 23 hooked on the locking portion 13 can be removed, whereby the first case 1 and the second case 2 can be removed, and thus the conductive connecting member. The arrangement position of 3 can be easily changed on the manufacturing side.

A lateral partition wall 16 is provided to isolate at least two receiving blades 8 facing the plurality of insertion grooves 5 of the first case 1, and the lateral partition wall 16 extends across each insertion groove 5 in a direction intersecting the insertion grooves 5. Vertical partition wall 17 formed to extend toward the opening side of the partition wall 16
And the engaging partition 25 that engages with the vertical partition 17 is provided in the second case 2, and the conductive connecting member 3 includes the horizontal partition 16 and the vertical partition 17 of the first case 1 and the engaging partition 25 of the second case 2. Since they are respectively arranged in the spaces partitioned by and, the insulating property of each pole of the conductive connecting member 3 is improved.

A plurality of receiving blades 8 are provided on the horizontal partition wall 1 of the first case 1.
Among the plurality of spaces partitioned by 6, the vertical partition wall 17 and the engaging partition wall 25 of the second case 2, the spaces are arranged in diagonal directions with respect to each other. Earn. A second embodiment of the present invention will be described based on FIGS. 17 and 18. That is, this circuit breaker connection structure has a circuit breaker 9 having insertion grooves 5 into which the conductive bars 4 arranged at least in two upper and lower stages are respectively inserted,
In a configuration including two conductive connecting members 3 each having a receiving blade 8 disposed inside the insertion groove 5 in the circuit breaker 9 and inserting and connecting the conductive bars 4 inserted from the insertion groove 5 respectively. The receiving blades 8 are arranged so as to be offset from each other in the insertion direction of the conductive bar 4.

In the embodiment, the lower blade 8'is retracted so that the upper blade 8 projects forward, and the front surface of the case 80 is also formed with the recess 120 in accordance with the retracted amount of the blade 8. Is forming. In addition, the specific configuration of the receiving blades 8 and 8 ', the case 80, and the like, the configuration of the mounting base 62, and the like are the same as those in the first embodiment, and the same reference numerals as those in the first embodiment denote the same. 1 shows the common parts with the first embodiment.

According to this embodiment, by inserting the circuit breaker 9 in parallel with the conductive bar 4 and inserting it into the insertion groove 5,
Since the uppermost blade 8 is connected to the conductive bar 4 first and then the lower blade 8 is connected to the conductive bar 4, the insertion force when connecting the conductive bar 4 to the blade 8 should be dispersed. Therefore, the insertion force for connecting to the conductive bar 4 can be reduced, and it is easy to connect to the conductive bar 4.

In the present invention, the jig insertion hole 15
It is possible to make the dedicated jig to be inserted into the user unusable. Further, although the second case 2 is attached in the first case 1 in a fitted state, the size may be determined in relation to the first case 1 in the second case 2. In this case, the locking portion 13 is provided on the inner surface of the second case 2, and the hooking portion 23 is provided on the first case 1.

When an exhaust hole is provided on the side of the side wall of the circuit breaker 9 where the terminal 10 is attached, a gas communicating with the gas exhaust hole is formed so that the second case 2 does not come into close contact with the side wall of the circuit breaker 9. Form an escape route. In addition, the first case 1 and the second case
At least a part of the case 2 may be separated from the circuit breaker mounting surface 62a by a predetermined distance to form a recess. Further, in the present invention, the receiving blade 8 itself may be integrally provided in the main body of the circuit breaker 9.

The receiving blade 8 has a structure in which the conductive bar 4 is inserted and sandwiched by the pair of conductive plates 3a and 3b.
Only one of 3b may be used. Further, in the present invention, the conductive bars 4 may be arranged in at least two upper and lower stages. The number of the receiving blades 8 may be two or more according to the number of the conductive bars 4.

[0040]

According to the circuit breaker connection structure of the first aspect of the present invention, the circuit breaker is guided by the guide portion and is rotated from the tilted posture to the mounting posture while sliding, so that the uppermost conductive bar is provided. Is first connected to the receiving blade, and then the lower conductive bar is connected to the receiving blade, so that not all conductive bars are connected to the receiving blade at the same time. It can be reduced and it becomes easier to connect to the conductive bar. Further, since the circuit breaker is attached while being guided from the inclined posture to the guide portion, the work of connecting to the conductive bar becomes easy. In addition, the engaging claw guide is guided to the engaging claw and the circuit
By placing the rear end side of the circuit breaker on the guide piece of the elastic claw,
A tilted posture is obtained, and the circuit is interrupted along the engaging claw and the guide piece.
Sliding the circuit breaker can connect to the conductive bar and block the circuit.
Since the breaker can be mounted on the mounting base,
You can easily mix them.

[0041]

[0042] According to the connection structure for a circuit breaker according to claim 2, wherein, in addition to the same effects as claim 1, the conductive bar can be dispersed insertion force when connecting the receiving blades, the conductive bar The insertion force for connection can be reduced, and connection to the conductive bar is easy.

[Brief description of drawings]

FIG. 1 is a side view of a circuit breaker connection structure according to a first embodiment of the present invention in a state in which a receiving blade is inserted into a conductive bar at an uppermost stage before a circuit breaker is attached.

FIG. 2 is a cross-sectional view of a connection conversion adapter.

FIG. 3 is a perspective view showing a state in which the connection conversion adapter is removed from the circuit breaker.

FIG. 4 is an exploded perspective view showing a state in which a second case and a conductive connecting member are disassembled.

FIG. 5 is a front view seen from the first case side.

FIG. 6 is a front view showing a state in which the connection conversion adapter is attached to the circuit breaker.

FIG. 7 is a rear view of the first case when viewed from the opening side with the second case removed.

FIG. 8 is an exploded plan view showing a state where the second case to which the conductive connecting member is attached is removed from the first case.

FIG. 9 is a cross-sectional view of the connection conversion adapter.

FIG. 10 is a perspective view of the conductive connection member in a developed state.

FIG. 11 is a perspective view of the approximately half-folded state.

FIG. 12 is a perspective view of a conductive connecting member before being bent into a Z shape and folded in half.

FIG. 13 is a partial cross-sectional view of an insertion groove into which a conductive bar is inserted.

FIG. 14 is a partial cross-sectional view with a conductive bar inserted.

FIG. 15 is a partial cross-sectional view showing a state where the conductive bar is displaced.

FIG. 16 is a graph of insertion load with respect to insertion amount.

FIG. 17 is a cross-sectional view of the connection conversion adapter according to the second embodiment.

FIG. 18 is a perspective view of the circuit breaker with the connection conversion adapter removed.

FIG. 19 is a side view of the proposed example.

[Explanation of symbols]

3 Conductive connection member 4 Conductive bar 5 insertion groove 8 receiving edge 9 circuit breaker 10 terminals 11 terminal connection 18 Insulation plate 60a First hook recess 60b Second hook recess 61 Engaging claw 62 mounting base 80 Adapter Case 80a storage room 101 circuit breaker case 102 guide 105 Elastic Claw 106 Engaging claw guide 107 guide pieces

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Hirao 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Tomoyuki Sawada, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works, Ltd. ( 72) Inventor Toshihiro Oido 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor, Yasuhiro Sumino 1048, Kadoma, Kadoma City, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Inventor, Yasushi Futahata 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (56) References Japanese Patent Laid-Open No. 11-69529 (JP, A) Japanese Patent Laid-Open No. 9-92122 (JP, A) Sakukai Sho 52-91467 (JP, U) Actual development 5-57786 (JP, U) Actual development Sho 61-186188 (JP, U) U.S. Pat. No. 3346777 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01H 71 / 08 H01H 73/06-73/08 H01H 73/20 H02B 1/40-1/42 H01R 13/11 H01R 13/15 H01R 31/06

Claims (2)

(57) [Claims] 1. A mounting base to which at least upper and lower conductive bars are fixed, and a circuit breaker mounted to the mounting base having insertion grooves into which the conductive bars are respectively inserted.
At least two receiving blades are provided inside the insertion groove in the circuit breaker to insert and connect the conductive bars inserted in the insertion groove in the mounted state of the circuit breaker.
Two conductive connection members , the posture before the circuit breaker is installed so that the receiving blade is provided only on the uppermost conductive bar provided on the mounting base, and the conductive bar on all of the conductive bars. between the mounting attitude of the circuit breaker connecting a blade, and a guide portion for guiding the circuit breaker slidably
The circuit breaker has the insertion groove and is provided with the receiving blade.
And the adapter that you
Do not have a circuit breaker body that electrically connects the blade.
The direction in which the circuit breaker body contacts and separates from the conductive bar.
The first hooking recess is provided at the front end of the and the second hooking recess is provided at the rear end.
And the mounting base engages with the first hooking recess.
Engaging claws and elastic claws that engage with the second hooking recesses.
The guide part is provided on the adapter and is slidable on the engaging claw.
Engagement that moves to guide the first hooking recess to the engaging claw
The claw guide and the elastic claw away from the conductive bar
The second hooking recess of the circuit breaker main body
Circuit breaker connection structure consisting of a guide piece that slides and guides the vicinity of the circuit breaker. 2. A pre-Symbol receiving blade connection structure of a circuit breaker of mutually staggered 請 Motomeko 1 wherein disposed in the insertion direction of the conductive bar.