JP7330903B2 - Conductive bar for switch - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive bar for a switch arranged for electrically connecting a main breaker and a branch breaker in a distribution board, for example.

Conventionally, a typical distribution board consists of a main breaker to which a lead-in line from a commercial power system is connected, and multiple branch breakers for providing branch lines that supply power to loads such as lights and electrical equipment. Built-in. As the branch breaker, a so-called plug-in type branch breaker in which the primary side terminal is formed in a plug shape is often adopted. For the electrical connection between the main breaker and each branch breaker, a conductive bar shaped like a flat plate elongated in a predetermined direction is used. It is said to be in a state of being inserted into.

Japanese Patent Application Laid-Open No. 2003-304608

However, regarding the connection of the branch breaker to the conductive bar, the structure in which the flat conductive bar is inserted into the primary side terminal for connection has the problem that the conductive bar is easily pulled out from the primary side terminal. Also, for example, if you want to double the amount of current that can be handled, the thickness of the conductive bar will be doubled. There is a problem of causing high cost.

Therefore, the present invention has been made in view of the above problems, and provides a conductive bar for a switch that is difficult to pull out from the primary side terminal and can cope with different current amounts without changing the design of the switch. is trying to provide.

In order to achieve the above object, the invention according to claim 1 of the present invention is a conductive bar for a switch which is inserted into and connected to a primary side terminal of a switch formed in a plug shape, wherein the primary side terminal is formed in the shape of a corrugated plate that undulates in the thickness direction of the conductive bar for the switch, the bottom portion that bulges downward covers the bottom surface of the insertion port of the primary side terminal, and the top portion that bulges upward In a state in which the top surface of the insertion port is pressed, and the bottom portion protrudes from the bottom surface of the insertion port to the connection portion of the terminal fitting, the top portion protrudes from the top surface of the insertion port. It is characterized in that it can be connected to the primary side terminals while being in contact with the connecting portions of the terminal fittings.
The invention according to claim 2 is the invention according to claim 1, wherein the left and right side edges of the switch conductive bar are connected to the primary side terminals, and the right side of the switch conductive bar The connection portion is first bent downward from the horizontally extending central portion, and then bent upward from the first bottom portion, via a first top portion which is at the same height as the central portion in the vertical direction. It is bent downward again, and when it reaches the second top by bending upward again from the second bottom, it is bent downward again to form an edge. The angle between a first downward slope toward the bottom of the and a first upward slope toward the first top from the first bottom is such that the angle between the first upward slope and the first top to the the same as the angle between a second downward slope towards a second bottom and the angle between said second downward slope and a second upward slope towards said second top from said second bottom On the other hand, the connecting portion on the left side is first bent upward from the central portion, then bent downward from the top portion, and reaches the bottom portion at the same height position as the central portion in the vertical direction. The angle between a first rising slope on the left side from the central portion to the top and a falling slope from the top to the bottom is corrugated to be folded upwards again to form an edge. , and the angle between the descending ramp and the second ascending ramp on the left side from the bottom to the edge is the angle between the first descending ramp and the first ascending ramp at the junction on the right. The angle is the same as the angle of , and on top of one of the switch conductive bars in a normal posture, another switch switch conductive bar that is upside down and left and right is shifted in the left and right direction, and normally The slanted portion of the right connecting portion of the switch conductive bar in the position of , and the slanted portion of the left connecting portion of the upside-down switch conductive bar are in contact with each other. It is characterized by

According to the present invention, the connection portion to the primary side terminal is formed in a corrugated plate shape that undulates in the thickness direction of the switch conductive bar, and the bottom portion that bulges downward serves as the bottom surface of the insertion port of the primary side terminal. The apex that bulges upward presses the top surface of the receptacle, and the bottom protrudes from the bottom surface of the receptacle to the connection part of the terminal fitting. It is possible to connect to the primary side terminals in a state in which they are in contact with the connection portions of the terminal fittings. Therefore, as compared with a conventional plate-like conductive bar for a switch, it is possible to effectively prevent accidental disconnection from the primary side terminal.
Further, according to the second aspect of the invention, another conductive bar for a switch that is upside down and left and right is shifted in the horizontal direction on top of one conductive bar for a switch that is in a normal posture, and Since the inclined part of the right connecting part of the switch conductive bar in the normal posture and the inclined part of the left connecting part of the inverted switch conductive bar are in contact with each other, they can be placed. Also, when the amount of current is changed, it is possible to cope with the change without changing the design of the switch, such as the vertical width of the insertion port, so that the cost can be reduced.

It is explanatory drawing which showed the state which connected the primary side terminal of the branch breaker to the electrically conductive bar for switches. FIG. 2 is an explanatory view showing an enlarged plug-in portion in FIG. 1; It is explanatory drawing which showed the electrically conductive bar for switches from the front. It is explanatory drawing which showed the state which connected the primary side terminal of the branch breaker to the electrically conductive bar for switches which overlapped two sheets. FIG. 5 is an explanatory diagram showing an enlarged view of an insertion opening portion in FIG. 4;

EMBODIMENT OF THE INVENTION Hereinafter, the electrically conductive bar for switches (it is called an electrically conductive bar hereafter) which becomes one Embodiment of this invention is demonstrated in detail based on drawing.
FIG. 1 is an explanatory view showing a state in which primary terminals of branch breakers 30, 30 are connected to a conductive bar 1. FIG. FIG. 2 is an explanatory view showing an enlarged portion of the insertion port 34 in FIG. FIG. 3 is an explanatory diagram showing the conductive bar 1 from the front. FIG. 4 is an explanatory view showing a state in which the primary terminals of the branch breakers 30, 30 are connected to the conductive bars 1, 1 stacked in two. FIG. 5 is an explanatory view showing an enlarged portion of the insertion port 34 in FIG.

The conductive bar 1 is for electrically connecting a main breaker (not shown) and plug-in type branch breakers 30, 30 . . . in a distribution board, for example. 30 can be inserted into the primary side terminal. The conductive bar 1 is a strip-shaped metal plate that is elongated in the front-rear direction (the front-rear direction in FIG. 1), and both left and right edges serve as connection portions that are inserted into the primary terminals of the branch breaker 30 . The connecting portion of the conductive bar 1 is shaped like a corrugated plate that undulates vertically (in the thickness direction) instead of the conventional flat plate shape. Reference numeral 31 denotes a support member for supporting three conductive bars 1, 1, . Reference numeral 32 denotes an installation metal fitting that is fixed to the inner surface of the box of the distribution board, etc., and on which the branch breaker 30 is installed.

Of the left and right connection portions, the right connection portion will be described. The right connection portion is first bent downward from the horizontally extending central portion, then bent upward from the first bottom portion 2, and then bent upward and downward from the central portion. It is folded downward again via the first top portion 3 which is at the same height position in the direction, and when it is folded upward again from the second bottom portion 4 and reaches the second top portion 5, it is folded downward again. It is wavy so as to form an edge. The angle between the first downward slope portion 6 directed from the central portion to the first bottom portion 2 and the first upward slope portion 7 directed from the first bottom portion 2 to the first top portion 3 is the first upward slope The angle between the portion 7 and the second downward slope 8 from the first top 3 to the second bottom 4 and the angle between the second downward slope 8 and the second downward slope 8 from the second bottom 4 to the second top 5 2 is the same as the angle between the upward slope portion 9. Further, the length in the left-right direction of the second bottom portion 4 and the second top portion 5 is substantially the same as the width in the left-right direction of the contact portion 33 of the terminal metal fitting, which will be described later. Furthermore, the vertical height of the second bottom portion 4 and the second top portion 5 is substantially the same as the vertical height of the insertion port 34 described later (strictly speaking, it is higher than the vertical height of the insertion port 34). slightly higher), and the vertical height of the first top portion 3 and the second bottom portion 4 is approximately half the vertical height of the insertion port 34 .

Also, to explain the left connecting portion, the left connecting portion is first bent upward from the horizontally extending central portion, and then bent downward from the top portion 10 so that it is at the same height position as the central portion in the vertical direction. When it reaches the bottom 11, it is corrugated so that it is folded upward again to form an edge. and the angle between the first upward slope 12 from the central portion to the top 10 and the downward slope 13 from the top 10 to the bottom 11, and the second upward slope from the bottom 11 to the edge. The angle between the inclined portion 14 is the same as the angle between the first downward inclined portion 6 and the first upward inclined portion 7 at the right connecting portion. The length of the top portion 10 and the bottom portion 11 in the horizontal direction is substantially the same as the width of the contact portion 33 of the terminal fitting, and the height of the top portion 10 and the bottom portion 11 in the vertical direction is equal to the height of the insertion port 34. It is approximately the same as the height (strictly speaking, it is slightly higher than the vertical height of the insertion port 34).

On the other hand, the primary side terminal of the branch breaker 30 has a conventionally well-known structure, and has a plurality of insertion openings 34, 34 . . . Contact portions 33 , 33 of terminal metal fittings (not shown) built in the branch breaker 30 protrude from both upper and lower sides into each insertion port 34 .

When connecting the right connecting portion of the conductive bar 1 and the primary terminal of the branch breaker 30 as described above, the right connecting portion may be inserted into the insertion port 34 as in the conventional art. Then, when the second top portion 5 exceeds the upper connection portion 33, the second top portion 5 is on the right side of the upper connection portion 33, and the second bottom portion 4 is on the left side of the lower connection portion 33, respectively. As a result, the connection portion on the right side of the conductive bar 1 and the primary side terminal of the branch breaker 30 are electrically connected. In addition, the second top portion 5 is hooked on the connection portion 33, and the elastic force of the conductive bar 1 causes the second top portion 5 to cover the top surface of the insertion port 34, and the second bottom portion 4 to cover the bottom surface of the insertion port 34. By pressing, the right connecting portion is prevented from coming off from the insertion port 34 .

To connect the left connection portion of the conductive bar 1 to the primary terminal of the branch breaker 30, the left connection portion is inserted into the insertion port 34 as in the conventional case. Then, when the bottom portion 11 exceeds the lower connection portion 33, the top portion 10 contacts the right side of the upper connection portion 33, and the bottom portion 11 contacts the left side of the lower connection portion 33, respectively. 1 and the primary terminal of the branch breaker 30 are electrically connected. In addition, the bottom portion 11 is caught by the connection portion 33, and the elastic force of the conductive bar 1 causes the top portion 10 to press the top surface of the insertion port 34, and the bottom portion 11 to press the bottom surface of the insertion port 34, respectively. is prevented from coming off from the insertion port 34.

Furthermore, when the thickness of the conductive bar is doubled for reasons such as doubling the amount of current that can be handled, the two conductive bars 1, 1 are shifted left and right as shown in FIGS. It corresponds to the state by stacking up and down. That is, another conductive bar 1 is placed upside down and left to right on top of the conductive bar 1 which is normally arranged. At this time, at the right connecting portion, the inverted first upward slope portion 12 (because it is upside down, it is inclined downward) is placed on the first downward slope portion 6 in the normal posture. On a first ascending ramp 7, an inverted descending ramp 13 (which is inclined upwards because it is inverted) is placed on a second descending ramp 8 in its normal position. 2, the rising slopes 14 (because they are upside down, so they are sloped down) are brought into contact with each other, and the edge of the inverted conductive bar 1 is brought into contact with the second rising slopes 9 in the normal posture. . Then, at the left connecting portion, the first downward slope 6 inverted on the first upward slope 12 in the normal posture is the first downward slope 6 inverted on the downward slope 13 in the normal posture. The upward sloping portion 7 abuts on the second upward sloping portion 14 in the normal posture with the inverted second downward sloping portion 8 and the second upward sloping portion 9 with the left edge inverted. is in contact with the surface of the

When connecting the right connecting portion of the two conductive bars 1, 1 and the primary terminal of the branch breaker 30 as described above, the right connecting portion is inserted into the insertion port 34 as in the conventional art. Good luck. Then, when the second top portion 5 of the conductive bar 1 in the normal posture exceeds the upper connection portion 33, the second top portion 5 of the conductive bar 1 in the normal posture is on the right side of the upper connection portion 33. Then, the second bottom part 4 of the conductive bar 1 in the normal posture comes into contact with the left side of the lower connecting part 33, respectively, and the right connecting part of the conductive bars 1, 1 and the primary side of the branch breaker 30 terminals are electrically connected. In addition, the second top 5 of the conductive bar 1 in the normal posture is caught by the connection part 33, and the second top 5 of the conductive bar 1 in the normal posture touches the top surface of the insertion port 34. The second bottom part 4 of the conductive bar 1 on the side presses the bottom surface of the receptacle 34, and the bottom part 11 of the inverted conductive bar 1 presses the top surface of the receptacle 34, so that the connection on the right side Therefore, it is prevented from coming off from the insertion port 34 of the part.

Also, when connecting the left connection portion of the two-layered conductive bars 1, 1 to the primary terminal of the branch breaker 30, the left connection portion can be inserted into the insertion port 34 as in the conventional case. Then, when the second top portion 5 of the inverted conductive bar 1 exceeds the lower connection portion 33, the second top portion 5 of the inverted conductive bar 1 is on the left side of the lower connection portion 33. Then, the second bottom portion 4 of the inverted conductive bar 1 comes into contact with the right side of the upper connection portion 33, respectively, and the left side connection portions of the conductive bars 1, 1 and the primary side terminal of the branch breaker 30 are connected. are electrically connected. Also, the second top portion 5 of the inverted conductive bar 1 is caught on the connection portion 33, and the second top portion 5 of the inverted conductive bar 1 is attached to the bottom surface of the insertion port 34. The second bottom part 4 of 1 presses the top surface of the insertion port 34, and the bottom part 11 of the conductive bar 1 in the normal posture presses the bottom surface of the insertion port 34, so that the left connection part is inserted. It will be prevented from coming off from the mouth 34 . By stacking two conductive bars 1, 1 in this way, although the distance between the opposing branch breakers 30, 30 changes (widens), the design of the branch breaker 30 side, such as increasing the vertical width of the insertion port 34, for example, It is possible to cope with different current amounts without changing .

According to the conductive bar 1 having the above configuration, both the left and right connection portions are formed in a corrugated plate shape that undulates up and down instead of a conventional flat plate shape, and the top part (second A connection portion 33 in which the top portion 5, top portion 10) protrudes from the top surface of the insertion port 34, and a connection portion in which the downwardly bulging bottom portion (second bottom portion 4, bottom portion 11) protrudes from the bottom surface of the insertion port 34. 33, and the connection portion and the primary side terminal of the branch breaker 30 are electrically connected. In the connected state, the top portion (second top portion 5, top portion 10) presses the top surface of the insertion port 34, and the bottom portion (second bottom portion 4, bottom portion 11) presses the bottom surface of the insertion port 34. , the second top portion 5 is hooked on the connecting portion 33 and the bottom portion 11 is hooked on the connecting portion 33, thereby preventing the left and right connecting portions from coming off from the insertion openings 34. - 特許庁Therefore, as compared with a conventional plate-like conductive bar for a switch, it is possible to effectively prevent accidental disconnection from the primary side terminal.

In addition, the left and right connecting portions are configured as described above, and on top of the conductive bar 1 arranged in the same manner as usual, another conductive bar 1 that is upside down and left and right is placed with a horizontal shift. Then, the inclined portion of the right connecting portion of the conductive bar in the normal posture and the inclined portion of the left connecting portion of the inverted conductive bar are placed in contact with each other. Therefore, when the thickness of the conductive bar must be doubled in order to correspond to different current amounts, it can be handled without changing the design of the branch breaker 30 side such as the vertical width of the insertion port, and the cost can be reduced. can be improved.

It should be noted that the conductive bar for a switch according to the present invention is not limited to the aspect of the above-described embodiment. It can be changed as appropriate within a range that does not deviate.

For example, in the above-described embodiment, the conductive bar connected to the breaker, which is an example of the switch, is described. can also be preferably employed.
Also, the specific example of the waveform at each connecting portion is not limited to the waveform in the above embodiment, and the design can be changed as appropriate, for example, the left and right connecting portions may have the same waveform.

DESCRIPTION OF SYMBOLS 1... Conductive bar, 2... First bottom, 3... First top, 4... Second bottom, 5... Second top, 6... First descending slope, 7... First ascending slope portion, 8 Second descending slope portion, 9 Second ascending slope portion, 10 Top portion, 11 Bottom portion, 12 First ascending slope portion, 13 Falling slope portion, 14.. Second ascending slope portion, 30.. Branch breaker, 33.. Contact portion, 34.. Receptacle.

Claims (2)

A conductive bar for a switch that is inserted into and connected to a primary side terminal of a switch that is formed in a plug shape,
The connection portion to the primary side terminal is formed in a corrugated plate shape that undulates in the thickness direction of the switch conductive bar, and the downwardly bulging bottom portion bulges upwardly from the bottom surface of the insertion port of the primary side terminal. With the protruding top portions pressing the top surface of the insertion port, the bottom portion is connected to the connection portion of the terminal fitting projecting from the bottom surface of the insertion port. A conductive bar for a switch, wherein the conductive bar is connectable to the primary side terminals while being in contact with the connecting portions of the projecting terminal fittings. The switch conductive bar has left and right side edges of the switch conductive bar that are connected to the primary terminals,
The connecting portion on the right side is first bent downward from the horizontally extending central portion, then bent upward from the first bottom portion, and passes through the first top portion, which is at the same height as the central portion in the vertical direction. Then, it is bent downward again, and when it reaches the second top by bending upward again from the second bottom, it is bent downward again to form an edge. The angle between a first downward slope towards a first bottom and a first upward slope towards said first top from said first bottom is equal to said first upward slope and said first peak to the second bottom, and the angle between the second downward slope and the second upward slope from the second bottom to the second top. is assumed to be the same as
The connecting portion on the left side is first bent upward from the central portion, then bent downward from the top portion, and when it reaches the bottom portion at the same height as the central portion in the vertical direction, it is bent upward again. the angle between a first rising ramp on the left hand side from said central portion to said top and a falling ramp from said top toward said bottom and said falling ramp; and the second rising slope on the left side from the bottom to the edge is the same as the angle between the first falling slope and the first rising slope on the right side of the connecting portion. and
On top of the one switch conductive bar in a normal posture, another switch conductive bar turned upside down and left to right is shifted in the horizontal direction, and the switch conductive bar is in a normal posture. and the inclined portion of the connection portion on the right side of the above and the inclined portion of the connection portion on the left side of the inverted conductive bar for a switch can be placed in a state of contact with the inclined portion of the connection portion. The conductive bar for the switch described in .

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