CN111755290A - Connect conversion adapters and electrical equipment - Google Patents

Abstract

The connection conversion adapter (1) has an adapter body (2) and a plate-shaped terminal cover (3). The adapter body (2) has an equipment connection section connected to a screw terminal (101) of an electrical equipment, and a conductor connection section connected to a conductive member. The terminal cover (3) covers the upper side of the screw terminal (101) when the adapter body (2) is mounted on the electrical equipment. The terminal cover (3) is attached to the adapter body (2) at the base end side thereof in a state in which the tip thereof is positioned below the exhaust port (105) of the electrical device and is inclined downward from the base end toward the tip.

Description

Connect conversion adapters and electrical equipment

technical field

The present invention relates to a connection conversion adapter and an electric device for converting a connection method to an electrical device.

Background technique

Conventionally, in electrical equipment such as circuit breakers and switches, the screw terminal type connection method in which wires are connected through screw terminals is the mainstream method. Plug-in type, solderless terminal type or quick-connect terminal type and other connection methods.

When it is required to support a variety of connection methods in electrical equipment, from the viewpoints of reducing investment or man-hours, etc., a connection conversion adapter is sometimes used, which has a connection part to a screw terminal on one side and a connection conversion adapter with a screw terminal on the other side. Screw terminals for different connection methods.

For example, Patent Document 1 proposes a connection conversion adapter including an electric device connection portion connected to a screw terminal of an electric device, and a conductive bar connection portion inserted into and connected to a conductive bar. In this connection conversion adapter, a gas release passage is formed facing the exhaust port formed on the end face of the electric device, and the gas exhausted from the exhaust port of the electric device can be discharged to the outside through the gas release passage.

Patent Document 1: Japanese Patent Application Laid-Open No. 11-126669

However, the connection conversion adapter described in Patent Document 1 has a structure in which a gas release passage is formed in the space below the screw terminal, and cannot be applied to electrical equipment in which the exhaust port is provided at a position facing the space above the screw terminal.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a connection conversion adapter capable of exhausting gas exhausted from an exhaust port of an electrical device provided at a position facing a space above a screw terminal to the outside.

In order to solve the above-mentioned problems and achieve the object, the connection conversion adapter of the present invention includes an adapter body and a plate-shaped terminal cover. The adapter main body has a device connection portion connected to a screw terminal of an electrical device, and a conductor connection portion connected to a conductive member. The terminal cover covers the upper part of the screw terminal when the adapter body is attached to the electrical equipment. The base end side of the terminal cover is attached to the adapter body in a state where the front end is positioned below the exhaust port of the electrical device and is inclined downward from the base end toward the front end.

effect of invention

According to the present invention, there is an effect that the gas discharged from the exhaust port of the electrical device provided at the position facing the upper space of the screw terminal can be discharged to the outside.

Description of drawings

1 is an external perspective view showing a state before a connection conversion adapter according to Embodiment 1 of the present invention is connected to a circuit breaker.

2 is an external perspective view of the adapter body according to Embodiment 1. FIG.

FIG. 3 is a view of the adapter body according to Embodiment 1 as viewed from the direction of the arrow shown in FIG. 2 .

4 is an external perspective view of the terminal cover according to Embodiment 1. FIG.

5 is an external perspective view of the terminal cover according to Embodiment 1. FIG.

6 is a diagram for explaining a method of attaching the terminal cover to the adapter body attached to the circuit breaker according to Embodiment 1. FIG.

7 is an external perspective view showing a state in which a connection conversion adapter is attached to the circuit breaker according to Embodiment 1. FIG.

8 is a plan view showing a state in which a connection conversion adapter is attached to the circuit breaker according to Embodiment 1. FIG.

FIG. 9 is a cross-sectional view taken along line IX-IX shown in FIG. 8 .

10 is a diagram for explaining a function of discharging gas in the terminal cover to the outside according to Embodiment 1. FIG.

11 is an external perspective view of the adapter main body in the connection conversion adapter according to Embodiment 2 of the present invention.

FIG. 12 is a perspective view of the external appearance of one type of connection conversion module among a plurality of types of connection conversion modules constituting the adapter body shown in FIG. 11 .

Description of the label

1, 1A connection conversion adapter, 2, 2A adapter body, 3 terminal cover, 3a face, 5 screw, 6 arc, 7 arc gas, 9 extension cable, 21 device connection part, 21a terminal, 22 conductor connection part, 22a opening, 23 Mounting convex part, 24 inclined surface, 25 cover mounting groove, 26 cover engaging part, 26a extension part, 26b, 27a convex part, 27 engaging part cover, 27b, 32 cover part, 28a, 28b, 28c connection conversion Module, 29 Main Body Cover, 31 Base, 100 Circuit Breaker, 100a Bottom Surface, 101 Screw Terminals, 102 Mounting Slots, 104 Arc Suppression Chamber, 105 Exhaust Port, 106 Movable Contacts, 107 Fixed Contacts, 311, 322 guide groove, 321 hole for electricity inspection, 323 engaging part, A arrow, θ angle.

Detailed ways

Hereinafter, the connection conversion adapter and the electric device according to the embodiment of the present invention will be described in detail based on the drawings. In addition, this invention is not limited by this Embodiment.

Embodiment 1.

1 is an external perspective view showing a state before a connection conversion adapter according to Embodiment 1 of the present invention is connected to a circuit breaker. Hereinafter, a circuit breaker will be described as an example of the electrical equipment to which the connection conversion adapter according to Embodiment 1 is attached, but the electrical equipment to which the connection conversion adapter is attached is not limited to the circuit breaker.

As shown in FIG. 1 , two connection conversion adapters 1 are attached to a circuit breaker 100 . Specifically, one of the two connection conversion adapters 1 is attached to the power supply side of the circuit breaker 100 by connecting the connection conversion adapter 1 to the screw terminal 101 on the power supply side of the circuit breaker 100 . In addition, the other connection conversion adapter 1 is attached to the load side of the circuit breaker 100 by being connected to the screw terminal 101 on the load side in the circuit breaker 100 .

The screw terminal 101 has a screw hole for attaching the screw 5 , and the connection conversion adapter 1 is attached to the circuit breaker 100 by the screw 5 . In addition, in FIG. 1 , the screw 5 mounted on the screw terminal 101 on the load side of the circuit breaker 100 through one connection conversion adapter 1 is shielded by the circuit breaker 100, and the screw terminal 101 on the power supply side in the circuit breaker 100 is blocked. shaded by circuit breaker 100 .

The circuit breaker 100 performs connection and disconnection of the circuit between the screw terminals 101 on the power supply side and the screw terminals 101 on the load side. For example, the circuit breaker 100 puts the circuit in an open state when an overcurrent or a short-circuit current flows through the circuit. In addition, the screw terminal 101 on the power supply side is a terminal connected to the power supply, and the screw terminal 101 on the load side is a terminal connected to the load. The circuit breaker 100 shown in FIG. 1 is a three-pole circuit breaker, and a mounting groove 102 extending in the vertical direction in FIG. 1 is formed in the region between the poles of the power source side and the load side.

The connection conversion adapter 1 includes an adapter body 2 and a plate-shaped terminal cover 3 that covers the upper part of the screw terminals 101 of the circuit breaker 100 . The terminal cover 3 is attached to the adapter body 2 in a state where the adapter body 2 is attached to the circuit breaker 100 .

First, the structure of the adapter body 2 will be described. 2 is an external perspective view of the adapter body according to Embodiment 1. FIG. FIG. 3 is a view of the adapter body according to Embodiment 1 as viewed from the direction of the arrow shown in FIG. 2 .

As shown in FIG. 2 , the adapter main body 2 has: a plurality of device connection parts 21 having terminals 21a that form holes into which screws 5 are inserted, and are fastened to the screw terminals 101 by the screws 5; and a plurality of conductor connections The parts 22 are respectively connected to conductive parts such as electric wires or bus bars. The terminal 21 a of the device connection portion 21 is electrically connected to a conductor (not shown) provided in the conductor connection portion 22 . In addition, the terminal 21a of the device connection part 21 and the conductor provided in the conductor connection part 22 may be integrally formed.

Each conductor connection portion 22 is a quick-connect terminal-type connection portion that is connected to a conductor (not shown in the figure) and is connected to an electric wire inserted from the opening 22a of the conductor connection portion 22, but is not limited to the quick-connect terminal-type connection portion. . For example, each conductor connection part 22 may be a plug-in type connection part or a solderless terminal type connection part.

As shown in FIG. 2 , the adapter main body 2 is provided with a mounting protrusion 23 which is a region between poles and protrudes in the direction in which the terminal 21 a protrudes. This mounting convex part 23 is arrange|positioned between the adjacent terminals 21a. When the adapter body 2 is mounted on the circuit breaker 100 , the mounting protrusions 23 are inserted into the mounting grooves 102 in the circuit breaker 100 , and the mounting protrusions 23 are engaged with the mounting grooves 102 .

As described above, in addition to the fastening of the terminals 21 a and the screw terminals 101 by the screws 5 , the mounting protrusions 23 and the mounting grooves 102 are engaged, whereby the adapter body 2 is more firmly fixed to the circuit breaker 100 . In addition, by adjusting the dimensional relationship between the mounting protrusions 23 and the mounting grooves 102 , it is possible to adjust the fixing force of the adapter body 2 to the circuit breaker 100 , the assemblability, and the like.

In addition, as shown in FIG. 2 , the adapter body 2 has an inclined surface 24 which is inclined downward, and a pair of cover mounting grooves 25 which are formed on both side ends of the inclined surface 24 . The pair of cover mounting grooves 25 are inserted into both side ends of the terminal cover 3 when the terminal cover 3 is mounted on the adapter body 2 , and guide the terminal cover 3 of the adapter body 2 together with the inclined surfaces 24 .

In addition, the adapter main body 2 has: a plurality of cover engaging parts 26 extending from a region including the inclined surface 24 in the direction along the inclined surface 24 and engaging with the terminal cover 3; and a plurality of engaging part covers 27 which are The upper side of the corresponding cover engaging portion 26 among the plurality of cover engaging portions 26 is covered.

As shown in FIGS. 2 and 3 , the plurality of cover engaging portions 26 are arranged in the direction in which the pair of cover attachment grooves 25 face each other. In the example shown in FIGS. 2 and 3 , the cover engaging portion 26 is provided for each pole. Each cover engaging portion 26 has an extension portion 26a extending from the base end toward the front end in the insertion direction of the terminal cover 3 , and a protruding portion 26b extending from the front end of the extension portion 26a toward the insertion direction of the terminal cover 3 . bulge. The shape of the cover engaging portion 26 is also referred to as a snap shape.

The engaging portion cover 27 has a function of covering the cover engaging portion 26 in a state where the terminal cover 3 is attached to the adapter body 2 to prevent contact with the cover engaging portion 26 from the outside. In addition, the engaging portion cover 27 also has a function of preventing the terminal cover 3 from being detached from the adapter main body 2 when a force is applied to the board surface of the terminal cover 3 , for example.

The engaging portion cover 27 has a protruding portion 27a whose base end is continuous with the inclined surface 24 and protrudes in a direction orthogonal to or intersecting with the inclined surface 24, and a cover portion 27b which is in contact with the front end of the protruding portion 27a. Continuously, it faces the cover engaging portion 26 and covers the cover engaging portion 26 .

Next, the structure of the terminal cover 3 is demonstrated. 4 and 5 are external perspective views of the terminal cover according to the first embodiment. As shown in FIGS. 4 and 5 , the terminal cover 3 includes a base portion 31 extending in the pole arrangement direction, and a plurality of cover portions 32 arranged at intervals along the pole arrangement direction and extending in the pole arrangement direction. The orthogonal directions respectively protrude from the base portion 31 . The pole arrangement direction is a direction in which the pair of cover mounting grooves 25 face each other in a state in which the terminal cover 3 is attached to the adapter body 2 .

The base portion 31 is formed with a plurality of guide grooves 311 into which the plurality of projections 27 a formed in the adapter main body 2 are inserted when the terminal cover 3 is attached to the adapter main body 2 .

Each cover portion 32 covers the upper portion of the corresponding screw terminal 101 among the plurality of screw terminals 101 in the circuit breaker 100 . A hole 321 for electricity testing, which is a hole for checking the voltage of the screw terminal 101 , is formed in the front end portion of each cover portion 32 . In addition, a guide groove 322 is formed in the middle portion of each cover portion 32 , and the guide groove 322 guides the protruding portion 27 a of the adapter body 2 when the terminal cover 3 is attached to the adapter body 2 . In addition, an engaging portion 323 is formed at the proximal end portion of each cover portion 32 , and the engaging portion 323 is engaged with the cover engaging portion 26 formed in the adapter body 2 .

The terminal cover 3 is, for example, a one-piece member made of a plate-shaped resin having a certain thickness. In addition, the terminal cover 3 is not limited to the shape shown in FIG. 4 and FIG. 5 , as long as it has a structure having a power inspection hole 321 , a guide groove 322 , and an engaging portion 323 , and the adapter 1 and the circuit can be disconnected according to the connection. The shape of the device 100 is appropriately changed.

The thickness of the terminal cover 3 shown in FIGS. 4 and 5 is constant and bilaterally symmetrical, so that the front and back surfaces are not distinguished. Therefore, the possibility of attaching the terminal cover 3 in a state where the terminal cover 3 is erroneously attached to the adapter body 2 can be greatly reduced. In addition, the terminal cover 3 is formed of a plate-shaped resin member. For example, the terminal cover 3 is formed by subjecting a plate-shaped resin laminate material to a punching process. In addition, the terminal cover 3 is not limited to the resin laminated material which performed a punching process, For example, a molded product may be sufficient as it.

Next, a method of attaching the terminal cover 3 to the adapter body 2 will be described. 6 is a diagram for explaining a method of attaching the terminal cover to the adapter body attached to the circuit breaker according to Embodiment 1. FIG.

As shown in FIG. 6 , when the terminal cover 3 is attached to the adapter body 2 in the state of being attached to the circuit breaker 100 , both ends of the terminal cover 3 are inserted into the pair of cover mounting grooves 25 of the adapter body 2 , and It moves in the direction of the extending direction of the cover mounting groove 25 . Thereby, the terminal cover 3 is attached to the adapter body 2 .

In the state shown in FIG. 6 , the plurality of cover engaging portions 26 formed in the adapter body 2 shown in FIGS. 2 and 3 are engaged with the plurality of engaging portions 323 of the terminal cover 3 shown in FIGS. 4 and 5 . state. In addition, the state shown in FIG. 6 is a state in which the plurality of protrusions 27a formed in the adapter body 2 shown in FIGS. 2 and 3 are inserted into the plurality of guide grooves 311 of the terminal cover 3 shown in FIGS. 4 and 5 . .

When attaching the terminal cover 3 to the adapter body 2 , since the terminal cover 3 is guided by the cover mounting groove 25 , the installation of the terminal cover 3 to the adapter body 2 is a simple insertion operation, and the time required for this operation is short.

Next, the attachment state of the terminal cover 3 to the adapter main body 2 is demonstrated. 7 is an external perspective view showing a state in which a connection conversion adapter is attached to the circuit breaker according to Embodiment 1. FIG. 8 is a plan view showing a state in which a connection conversion adapter is attached to the circuit breaker according to Embodiment 1. FIG. FIG. 9 is a cross-sectional view taken along line IX-IX shown in FIG. 8 . 10 is a diagram for explaining a function of discharging gas in the terminal cover to the outside according to Embodiment 1. FIG.

As shown in FIGS. 7 and 8 , in the state where the connection conversion adapter 1 is mounted on the circuit breaker 100 , the engaging portion 323 of the terminal cover 3 is engaged with the cover engaging portion 26 of the adapter main body 2 as shown in FIG. 9 . . Therefore, the movement of the terminal cover 3 in the direction opposite to the direction indicated by the arrow A shown in FIG. 2 , that is, the removal direction is restricted by the cover engaging portion 26 .

When the terminal cover 3 is attached to the adapter body 2 in the state of being attached to the circuit breaker 100 , the extension portion 26 a of the cover engaging portion 26 is bent toward the screw 5 as the terminal cover 3 is inserted, and the cover engaging portion 26 is bent toward the screw 5 side. The protruding portion 26 b of the terminal cover 3 is restored to its original shape by passing over the engaging portion 323 of the terminal cover 3 . Thereby, the engaging portion 323 of the terminal cover 3 is engaged with the protruding portion 26b of the cover engaging portion 26 , which hinders the movement of the terminal cover 3 in the removal direction, and prevents the terminal cover 3 from being detached from the adapter body 2 .

In order for the cover engaging portion 26 to function as a disengagement preventing portion, a sufficient amount of deflection is required for the extension portion 26a that becomes the beam. However, if the portion of the beam that is to be deflected in the cover engaging portion 26 is short, the cover engaging portion 26 becomes short. When the extension portion 26a of the portion 26 is deflected, it may exceed the stress limit and break. Therefore, the extension portion 26a needs to be elongated to a certain extent so as not to exceed the stress limit, but if the extension portion 26a is elongated parallel to the bottom surface 100a of the circuit breaker 100, the size of the connection conversion adapter 1 needs to be increased.

Therefore, in the connection conversion adapter 1 according to the first embodiment, as shown in FIG. 10 , the insertion direction of the terminal cover 3 is inclined by an angle θ with respect to the plane parallel to the bottom surface 100 a of the circuit breaker 100 , and the cover is clamped. The extension portion 26a in the joint portion 26 extends in an oblique direction by an angle θ. Thereby, compared with the case where the insertion direction of the terminal cover 3 is made parallel to the bottom surface 100a of the circuit breaker 100 , in the direction parallel to the bottom surface 100a of the circuit breaker 100 , it can be shortened by the amount of “L−Lcosθ” . In addition, "L" is the length of the terminal cover 3 in the insertion direction of the terminal cover 3 . Therefore, the enlargement of the connection conversion adapter 1 can be suppressed. In addition, the angle θ is not limited to the angle shown in FIG. 10 .

In addition, the cover engaging portion 26 is formed on the side of the surface 3 a of the terminal cover 3 facing the screw terminal 101 , and the cover engaging portion 26 is a position where it is difficult to be touched from the outside. Therefore, it is possible to prevent the terminal cover 3 from being pulled out while pressing the cover engaging portion 26 serving as the detachment preventing portion from above to bend it, and it is possible to further prevent the connection conversion adapter 1 from being detached from the circuit breaker 100 . Case.

Moreover, the cover part 27b of the engaging part cover 27 is arrange|positioned in the position which covers the upper part of the cover engaging part 26, and prevents the cover engaging part 26 from being touched. Therefore, the terminal cover 3 can be further prevented from being pulled out while the cover engaging portion 26 is pressed from above to bend, and the connection conversion adapter 1 can be further prevented from being detached from the circuit breaker 100 .

In addition, the guide grooves 311 of the terminal cover 3 are inserted into the protrusions 27a of the engaging portion cover 27 in the adapter body 2, so that the movement of the terminal cover 3 in the direction indicated by the arrow A shown in FIG. 2 is affected by the protrusions 27a limit.

In addition, as shown in FIG. 9 , in the state where the connection conversion adapter 1 is mounted on the circuit breaker 100 , a part of each cover portion 32 in the terminal cover 3 is opposed to the cover portion 27 b of the engaging portion cover 27 in the adapter body 2 . . Therefore, the vertical movement of the terminal cover 3 is restricted by the cover portion 27 b of the engaging portion cover 27 in addition to the cover attachment groove 25 .

In the state where the connection conversion adapter 1 is mounted on the circuit breaker 100 , as shown in FIG. 9 , the connection conversion adapter 1 is connected to the screw terminal 101 by the screw 5 , and the cover portion 32 of the terminal cover 3 is attached with the screw terminal 101 of the screw 5 . cover above. Therefore, access to the screw 5 by a removal tool such as a screwdriver in a state where the connection conversion adapter 1 is attached to the circuit breaker 100 is prevented. In addition, in the state where the connection conversion adapter 1 is mounted on the circuit breaker 100 , contact of fingers or the like to the screw 5 or the screw terminal 101 and the like are also prevented.

In addition, the terminal cover 3 can discharge the gas discharged from the exhaust port 105 of the circuit breaker 100 provided at the position facing the space above the screw terminal 101 to the outside. Next, the function of discharging the gas in the terminal cover 3 to the outside will be described.

As shown in FIG. 10 , the circuit breaker 100 includes, on the power supply side, a movable contact 106 and a fixed contact 107 for connecting and breaking circuits, and the like, and an arc extinguishing chamber 104 for The arc 6 generated between the contact 106 and the fixed contact 107 is extinguished. In addition, the arc 6 is generated when, for example, the circuit is interrupted.

In the arc extinguishing chamber 104 , the arc gas 7 is generated by the arc 6 when the arc 6 is extinguished. Therefore, the circuit breaker 100 is provided with an exhaust port 105 adjacent to the arc extinguishing chamber 104 . 105 is used to discharge the arc gas 7 to the outside of the circuit breaker 100 .

Here, if there is an obstacle at a position facing the exhaust port 105 , the arc gas 7 cannot be sufficiently discharged to the outside, and there is a possibility that the circuit breaker 100 may deteriorate in the breaking performance and in the insulation performance. such a problem. Therefore, in the connection conversion adapter 1 , as shown in FIG. 10 , the insertion direction of the terminal cover 3 is made oblique, and the terminal cover 3 is attached in a state where the front end of the terminal cover 3 is positioned below the exhaust port 105 . on the adapter body 2. Thereby, the exhaust port 105 is located on the open side above the extension line 9 in the insertion direction of the terminal cover 3 . Therefore, a gas release path at a position facing the exhaust port 105 can be secured, and deterioration of the circuit breaker 100's breaking performance and the like can be suppressed.

As described above, the connection conversion adapter 1 according to Embodiment 1 includes the adapter body 2 and the plate-shaped terminal cover 3 . The adapter main body 2 has a device connecting portion 21 connected to a screw terminal 101 of a circuit breaker 100 as an example of an electrical device, and a conductor connecting portion 22 connected to a conductive member (not shown). The terminal cover 3 covers the upper part of the screw terminal 101 when the adapter body 2 is attached to the circuit breaker 100 . The base end side of the terminal cover 3 is attached to the adapter body 2 in a state where the front end is positioned below the exhaust port 105 of the circuit breaker 100 and is inclined downward from the base end toward the front end. Thereby, by arranging the terminal cover 3 in an oblique direction, there is no obstacle in the exhaust part, and the exhaust port 105 of the electric device provided at the position facing the space above the screw terminal 101 can be exhausted from the exhaust port 105 of the electric device. The gas is discharged to the outside. Therefore, the reduction of the breaking performance in the circuit breaker 100 can be suppressed.

In addition, the terminal cover 3 is formed of the resin laminate material punched out. Thereby, the connection conversion adapter 1 can be configured using the relatively inexpensive terminal cover 3 . In addition, the terminal cover 3 should just be a plate-shaped resin having a certain thickness, and since one adapter body 2 may be a single member, it can be configured relatively inexpensively.

In addition, the terminal cover 3 is formed with a hole 321 for electrical inspection, which is a hole for checking the voltage of the screw terminal 101 . Thereby, the electric test can be performed through the terminal cover 3 .

In addition, the adapter body 2 has a cover engaging portion 26 that engages with an engaging portion 323 provided in the terminal cover 3 . The cover engaging portion 26 is formed on the side of the surface 3 a of the terminal cover 3 that faces the screw terminals 101 . Thereby, the cover engaging portion 26 can be provided at a position that is hard to be touched from the outside. For example, it is possible to prevent the terminal cover from being bent while pressing the cover engaging portion 26 serving as the detachment preventing portion from above. 3 Pull out such a case.

Moreover, the adapter main body 2 has the engaging part cover 27 which covers the cover engaging part 26 from above. Thereby, the cover engaging portion 26 becomes more difficult to touch from the outside, and it becomes difficult to detach the connection conversion adapter 1 from the adapter main body 2 in a non-destructive manner. Therefore, for example, it is possible to further prevent the terminal cover 3 from being pulled out while the cover engaging portion 26 serving as the detachment preventing portion is pressed from above to be bent.

Embodiment 2.

The connection conversion adapter according to Embodiment 2 differs from the connection conversion adapter 1 according to Embodiment 1 in that one type of connection conversion module among a plurality of types of connection conversion modules constituting the adapter body is provided with a connection conversion module corresponding to each pole. Cover engaging part and engaging part cover. Hereinafter, the same components as those of the connection conversion adapter 1 according to the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, and the configuration of the adapter main body different from the connection conversion adapter 1 according to the first embodiment will be mainly described.

11 is an external perspective view of the adapter main body in the connection conversion adapter according to Embodiment 2 of the present invention. FIG. 12 is a perspective view of the external appearance of one type of connection conversion module among a plurality of types of connection conversion modules constituting the adapter body shown in FIG. 11 . In addition, in FIG. 11, only the adapter main body 2A of the connection conversion adapter 1A which concerns on Embodiment 2 is shown.

The adapter main body 2A shown in FIG. 11 has three types of connection conversion modules 28 a , 28 b , and 28 c and a main body cover 29 . Each of the connection conversion modules 28a, 28b, and 28c has one conductor connection portion 22. As shown in FIG. In the adapter main body 2A shown in FIG. 11, a plurality of types of connection conversion modules 28a, 28b, and 28c are connected in a stacked manner. Thereby, the connection conversion adapter 1A corresponding to a plurality of electrical equipment including a single-pole type electrical equipment and a multi-pole type electrical equipment can be easily obtained.

In addition, the plurality of types of connection conversion modules 28a, 28b, and 28c have mutually different shapes so that they can be connected in a stacked manner, and the positions to be arranged in the stacked connection are determined. In the adapter main body 2A shown in FIG. 11, the connection conversion module 28a, the connection conversion module 28b, the connection conversion module 28c, the connection conversion module 28b, the connection conversion module 28c, and the connection conversion module 28b are connected in an arrangement. In addition, the main body cover 29 is connected to the connection conversion module 28b.

Regardless of whether the connection conversion module 28b is a single-pole or a multi-pole, it is arranged one by one for each pole in common with all the poles. In addition, a cover engaging portion 26 and an engaging portion cover 27 for preventing the terminal cover 3 from coming off are formed in the connection conversion module 28b.

As described above, in the adapter main body 2A, the cover engaging portion 26 and the engaging portion cover 27 are provided on the connection conversion module 28b used in common with all poles. Therefore, even when the number of poles of the adapter body 2A is increased or decreased, by increasing or decreasing the number of the cover parts 32 of the terminal cover 3, it is possible to easily obtain the connection conversion adapter 1A corresponding to the changed number of poles The terminal cover 3 can reduce the cost of design.

Since the insertion direction of the terminal cover 3 is orthogonal to the coupling direction of the connection conversion modules 28a, 28b, and 28c, movement in the connection direction of the connection conversion modules 28a, 28b, and 28c after the terminal cover 3 is inserted is restricted. Therefore, the connection conversion modules 28a, 28b, and 28c can be connected more firmly.

As described above, the adapter main body 2A according to Embodiment 2 has the plurality of conductor connecting portions 22 and the cover engaging portions 26 , respectively. The adapter body 2A has a plurality of types of connection conversion modules 28 a , 28 b , and 28 c arranged in the arrangement direction of the screw terminals 101 , and the connection conversion modules 28 a, 28 b, and 28 c have respective corresponding conductor connection portions 22 of the plurality of conductor connection portions 22 . Each of the plurality of cover engaging portions 26 is formed in one type of connection conversion module 28b among the plurality of types of connection conversion modules 28a, 28b, and 28c. Thereby, the number of poles of the adapter body 2A can be easily increased or decreased, and the cost required for design can be reduced.

In addition, in the above-mentioned Embodiments 1 and 2, the circuit breaker 100 was described as an example of the electrical equipment, but it can also be applied to electrical equipment having the screw terminal 101 and the exhaust port 105 close to the screw terminal 101 . For example, the connection conversion adapter 1, 1A may be used for a switch or an electromagnetic contactor or the like instead of the circuit breaker 100. In addition, it is also possible to provide electrical equipment including the connection conversion adapters 1 and 1A and the circuit breaker 100 . In addition, the circuit breaker 100 , the switch, and the electromagnetic contactor each have an open/close contact that opens and closes a circuit connecting the screw terminal 101 on the load side and the screw terminal 101 on the power source side.

The configurations shown in the above embodiments represent an example of the contents of the present invention, and can be combined with other known technologies, and a part of the configurations can be omitted or changed without departing from the gist of the present invention.

Claims (7)

1. A connection conversion adapter comprising:

an adapter body having an apparatus connection portion connected to a screw terminal of an electrical apparatus and a conductor connection portion connected to a conductive member; and

a plate-shaped terminal cover that covers an upper portion of the screw terminal in a state where the adapter body is attached to the electrical device,

the terminal cover is attached to the adapter body at a base end side thereof in a state in which a tip end thereof is positioned below an exhaust port of the electrical device and is inclined downward from the base end toward the tip end.

2. The connection conversion adapter according to claim 1,

the terminal cover is formed of a resin laminate material obtained by blanking.

3. Connection transformation adapter according to claim 1 or 2,

the terminal cover forms a hole for checking the voltage of the screw terminal, namely an electricity checking hole.

4. Connection transformation adapter according to any one of claims 1 to 3,

the adapter body has a cover engaging portion that engages with an engaging portion provided on the terminal cover,

the cover engagement portion is formed on a surface side of the terminal cover facing the screw terminal.

5. The connection conversion adapter according to claim 4,

the adapter body has an engaging portion cover that covers the cover engaging portion from above.

6. Connection transformation adapter according to claim 4 or 5,

each of which has a plurality of conductor connecting portions and a plurality of cover engaging portions,

the adapter body includes a plurality of kinds of connection conversion modules arranged in an arrangement direction of the screw terminals, each of the connection conversion modules having a conductor connection portion corresponding to each of the plurality of conductor connection portions,

the plurality of cover engagement portions are formed in each of 1 connection conversion module out of the plurality of connection conversion modules.

7. An electrical apparatus, comprising:

the connection conversion adapter of any one of claims 1 to 6; and

an opening/closing contact for opening/closing a circuit connecting the screw terminal on the load side and the screw terminal on the power supply side,

the connection conversion adapter is connected to either or both of the screw terminal on the load side and the screw terminal on the power supply side.

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