Connect conversion adapter and electrical equipment

Abstract

A connection conversion adapter (1) comprises an adapter body (2) and a plate-shaped terminal cover (3). The adapter body (2) comprises an equipment connection portion connected to a screw terminal (101) of an electrical device, and a conductor connection portion connected to a conductive component. When the adapter body (2) is mounted on the electrical device, the terminal cover (3) covers the upper portion of the screw terminal (101). The terminal cover (3) is mounted on the adapter body (2) with the base end side thereof being located below the exhaust port (105) of the electrical device and being tilted downward from the base end toward the front end.

Description

Technical Field

[0001] The present invention relates to a connection conversion adapter for converting the connection mode of an electrical device and the electrical device. Background Art

[0002] In the past, in electrical equipment such as circuit breakers and switches, the screw terminal type connection method for connecting wires through screw terminals was the mainstream method, but sometimes for the purpose of linearity, appearance design or saving construction, connection methods such as plug-in type, solderless terminal type or quick connection terminal type are adopted.

[0003] When electrical equipment is required to support multiple connection methods, a connection conversion adapter is sometimes used from the perspective of reducing investment or reducing man-hours. The connection conversion adapter has a connection portion for a screw terminal on one side and a terminal for a connection method different from the screw on the other side.

[0004] For example, Patent Document 1 proposes a connection conversion adapter having an electrical device connection portion connected to a screw terminal of an electrical device and a conductive rod connection portion inserted and connected between conductive rods. In the connection conversion adapter, a gas release passage is formed opposite to an exhaust port formed on an end face of the electrical device, and gas exhausted from the exhaust port of the electrical device can be discharged to the outside through the gas release passage.

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 11-126669

[0006] 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 an electrical device in which an exhaust port is provided at a position opposite to the space above the screw terminal. Summary of the invention

[0007] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connection conversion adapter capable of discharging gas exhausted from an exhaust port of an electrical device provided at a position facing a space above a screw terminal to the outside.

[0008] In order to solve the above-mentioned problems and achieve the purpose, the connection conversion adapter of the present invention has an adapter body and a plate-shaped terminal cover. The adapter body has an equipment connection portion connected to the screw terminal of the electrical device and a conductor connection portion connected to the conductive component. The terminal cover covers the upper part of the screw terminal when the adapter body is installed on the electrical device. The terminal cover is installed on the adapter body at the base end side in a state where the front end is located below the exhaust port of the electrical device and is tilted downward from the base end toward the front end.

[0009] Effects of the Invention

[0010] According to the present invention, there is an effect that the gas exhausted from the exhaust port of the electrical equipment provided at a position facing the space above the screw terminal can be exhausted to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an external perspective view showing a state before the connection conversion adapter according to Embodiment 1 of the present invention is connected to a circuit breaker.

[0012] Figure 2 This is a perspective view of the appearance of the adapter main body involved in the first embodiment.

[0013] Figure 3 is from Figure 2 The diagram shows the adapter body according to the first embodiment as viewed in the direction of the arrow shown.

[0014] Figure 4 This is a perspective view of the appearance of the terminal cover according to the first embodiment.

[0015] Figure 5 This is a perspective view of the appearance of the terminal cover according to the first embodiment.

[0016] Figure 6 This is a diagram for explaining a method of mounting the terminal cover to the adapter body mounted on the circuit breaker according to the first embodiment.

[0017] Figure 7 This is an external perspective view showing a state in which a connection conversion adapter is attached to the circuit breaker according to the first embodiment.

[0018] Figure 8 It is a plan view showing a state where a connection conversion adapter is attached to the circuit breaker according to the first embodiment.

[0019] Fig. 9 is along Figure 8 A cross-sectional view taken along line IX-IX is shown.

[0020] Fig.10 This is a diagram for explaining the function of discharging gas to the outside in the terminal cover according to the first embodiment.

[0021] Fig.11 It is a perspective view of the appearance of an adapter main body in the connection conversion adapter involved in Embodiment 2 of the present invention.

[0022] Fig.12 It is composed Fig.11 An oblique view of the appearance of one type of connection conversion module among the multiple types of connection conversion modules of the adapter body shown.

[0023] Description of the label

[0024] 1, 1A connection conversion adapter, 2, 2A adapter body, 3 terminal cover, 3a surface, 5 screw, 6 arc, 7 arc gas, 9 extension line, 21 equipment connection part, 21a terminal, 22 conductor connection part, 22a opening, 23 mounting protrusion, 24 inclined surface, 25 cover mounting groove, 26 cover clamping part, 26a extension part, 26b, 27a protrusion, 27 clamping part cover, 27b, 32 cover part, 28a, 28b, 28c connection conversion module, 29 main body cover, 31 base part, 100 circuit breaker, 100a bottom surface, 101 screw terminal, 102 mounting groove, 104 arc extinguishing chamber, 105 exhaust port, 106 movable contact, 107 fixed contact, 311, 322 guide grooves, 321 hole for electrical testing, 323 clamping part, A arrow, θ angle. DETAILED DESCRIPTION

[0025] 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, the present invention is not limited to the embodiment.

[0026] Implementation method 1.

[0027] Figure 1 This is an external perspective view showing a state before the connection conversion adapter according to Embodiment 1 of the present invention is connected to a circuit breaker. Hereinafter, a circuit breaker is exemplified as an electrical device to which the connection conversion adapter according to Embodiment 1 is mounted, but the electrical device to which the connection conversion adapter is mounted is not limited to the circuit breaker.

[0028] like Figure 1 As shown, two connection conversion adapters 1 are mounted on the circuit breaker 100. Specifically, one of the two connection conversion adapters 1 is connected to a screw terminal 101 on the power supply side of the circuit breaker 100, thereby being mounted on the power supply side of the circuit breaker 100. In addition, the other connection conversion adapter 1 is connected to a screw terminal 101 on the load side of the circuit breaker 100, thereby being mounted on the load side of the circuit breaker 100.

[0029] The screw terminal 101 has a screw hole for mounting a screw 5, and the connection conversion adapter 1 is mounted to the circuit breaker 100 by the screw 5. Figure 1 In the embodiment, the screw 5 mounted on the screw terminal 101 on the load side of the circuit breaker 100 through the one connection conversion adapter 1 is shielded by the circuit breaker 100 , and the screw terminal 101 on the power supply side of the circuit breaker 100 is shielded by the circuit breaker 100 .

[0030] The circuit breaker 100 connects and disconnects the circuit between the screw terminal 101 on the power supply side and the screw terminal 101 on the load side. For example, the circuit breaker 100 sets the circuit to an open state when an overcurrent or a short-circuit current flows through the circuit. 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. Figure 1 The circuit breaker 100 shown is a three-pole circuit breaker, and a line connection is formed in the area between the poles on the power supply side and the load side. Figure 1 A mounting groove 102 extending in the up-down direction.

[0031] The connection conversion adapter 1 includes an adapter body 2 and a plate-like terminal cover 3 that covers the upper side of the screw terminal 101 of the circuit breaker 100. The terminal cover 3 is attached to the adapter body 2 when the adapter body 2 is attached to the circuit breaker 100.

[0032] First, the structure of the adapter main body 2 will be described. Figure 2 This is a perspective view of the appearance of the adapter main body involved in the first embodiment. Figure 3 is from Figure 2 The diagram shows the adapter body according to the first embodiment as viewed in the direction of the arrow shown.

[0033] like Figure 2 As shown, the adapter body 2 has: a plurality of device connection parts 21, which have terminals 21a, which form holes for inserting screws 5 and are fastened to the screw terminals 101 by the screws 5; and a plurality of conductor connection parts 22, which are respectively connected to conductive parts such as electric wires or busbars. The terminals 21a of the device connection parts 21 are electrically connected to the conductors (not shown) provided in the conductor connection parts 22. In addition, the terminals 21a of the device connection parts 21 and the conductors provided in the conductor connection parts 22 may also be formed integrally.

[0034] Each conductor connection part 22 is a quick-connect terminal type connection part that connects a conductor (not shown) disposed inside to an electric wire inserted from an opening 22a of the conductor connection part 22, but is not limited to a quick-connect terminal type connection part. For example, each conductor connection part 22 may be a plug-in type connection part or a solderless terminal type connection part.

[0035] In the adapter body 2 Figure 2 As shown, a mounting protrusion 23 is provided, which is an area between poles and protrudes in the direction in which the terminal 21a protrudes. The mounting protrusion 23 is arranged between adjacent terminals 21a. When the adapter body 2 is mounted to the circuit breaker 100, the mounting protrusion 23 is inserted into the mounting groove 102 in the circuit breaker 100 and the mounting protrusion 23 is engaged with the mounting groove 102.

[0036] As described above, on the basis of the fastening of the terminal 21a and the screw terminal 101 by the screw 5, the mounting protrusion 23 and the mounting groove 102 are engaged, so that the adapter body 2 is more firmly fixed to the circuit breaker 100. In addition, by adjusting the dimensional relationship between the mounting protrusion 23 and the mounting groove 102, the fixing force and assembly property of the adapter body 2 to the circuit breaker 100 can be adjusted.

[0037] In addition, the adapter body 2 is as Figure 2 As shown, it has an inclined surface 24 that is inclined downward and a pair of cover mounting grooves 25 that are formed at both side ends of the inclined surface 24. When the terminal cover 3 is installed on the adapter body 2, the pair of cover mounting grooves 25 are inserted by both side ends of the terminal cover 3, and together with the inclined surface 24, guide the terminal cover 3 toward the adapter body 2.

[0038] In addition, the adapter body 2 has: a plurality of cover snap-fitting portions 26 extending from a region including the inclined surface 24 in a direction along the inclined surface 24 and snap-fitting with the terminal cover 3; and a plurality of snap-fitting portion covers 27 covering the upper portion of the corresponding cover snap-fitting portions 26 among the plurality of cover snap-fitting portions 26.

[0039] A plurality of cover engaging portions 26 are provided. Figure 2 and Figure 3 As shown, a pair of cover mounting grooves 25 are arranged in directions opposite to each other. Figure 2 and Figure 3 In the example shown, 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 along the insertion direction of the terminal cover 3, and a protruding portion 26b protruding from the front end of the extension portion 26a along the insertion direction toward the terminal cover 3. The shape of the cover engaging portion 26 is also called a snap-fit ​​shape.

[0040] The engaging portion cover 27 has the function of covering the cover engaging portion 26 to prevent contact from the outside to the cover engaging portion 26 when the terminal cover 3 is mounted on the adapter body 2. In addition, the engaging portion cover 27 also has the function of preventing the terminal cover 3 from being separated from the adapter body 2 when a strong force is applied to the plate surface of the terminal cover 3, for example.

[0041] The engaging portion cover 27 includes: a protruding portion 27a whose base end is continuous with the inclined surface 24 and protrudes in a direction perpendicular to or intersecting the inclined surface 24; and a cover portion 27b which is continuous with the front end of the protruding portion 27a and is opposite to the cover engaging portion 26 to cover the cover engaging portion 26.

[0042] Next, the structure of the terminal cover 3 will be described. Figure 4 and Figure 51 is a perspective view of the terminal cover according to the first embodiment. Figure 4 and Figure 5 As shown, the terminal cover 3 has: 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 protruding from the base portion 31 in a direction orthogonal to the pole arrangement direction. The pole arrangement direction is the direction in which the pair of cover mounting grooves 25 are opposite to each other when the terminal cover 3 is mounted on the adapter body 2.

[0043] A plurality of guide grooves 311 are formed in the base portion 31 , into which a plurality of protrusions 27 a formed on the adapter body 2 are inserted when the terminal cover 3 is mounted on the adapter body 2 .

[0044] Each cover portion 32 covers the top of a corresponding screw terminal 101 among the plurality of screw terminals 101 in the circuit breaker 100. A hole for testing the voltage of the screw terminal 101, i.e., an electric test hole 321, is formed at the front end of each cover portion 32. In addition, a guide groove 322 is formed in the middle of each cover portion 32, and the guide groove 322 guides the protrusion 27a of the adapter body 2 when the terminal cover 3 is installed on the adapter body 2. In addition, a snap-fit ​​portion 323 is formed at the base end of each cover portion 32, and the snap-fit ​​portion 323 snaps with the cover snap-fit ​​portion 26 formed on the adapter body 2.

[0045] The terminal cover 3 is, for example, a single-piece member made of a plate-shaped resin having a certain thickness. Figure 4 and Figure 5 The shape shown may be any structure as long as it has the electric test hole 321 , the guide groove 322 , and the engaging portion 323 , and can be appropriately changed according to the shapes of the connection conversion adapter 1 and the circuit breaker 100 .

[0046] Figure 4 and Figure 5 The thickness of the terminal cover 3 shown is constant and symmetrical, so there is no distinction between the front and back sides. Therefore, the possibility of installing the terminal cover 3 in a state where it is incorrectly installed on the adapter body 2 can be greatly reduced. In addition, the terminal cover 3 is composed of a plate-like resin component. For example, the terminal cover 3 is formed by punching a plate-like resin laminated material. In addition, the terminal cover 3 is not limited to a resin laminated material that has been punched, and can also be a molded product, for example.

[0047] Next, a method of attaching the terminal cover 3 to the adapter body 2 will be described. Figure 6 This is a diagram for explaining a method of mounting the terminal cover to the adapter body mounted on the circuit breaker according to the first embodiment.

[0048] like Figure 6As shown, when the terminal cover 3 is mounted on the adapter body 2 in the state of being mounted on the circuit breaker 100, both side ends of the terminal cover 3 are inserted into a pair of cover mounting grooves 25 of the adapter body 2 and moved in the direction along the extension direction of the cover mounting grooves 25. Thus, the terminal cover 3 is mounted on the adapter body 2.

[0049] Figure 6 The status shown is Figure 2 and Figure 3 The adapter body 2 shown in the figure forms a plurality of cover engaging portions 26 which engage with the Figure 4 and Figure 5 The state of the plurality of engaging portions 323 of the terminal cover 3 is shown. Figure 6 The status shown is Figure 2 and Figure 3 The adapter body 2 shown has a plurality of protrusions 27a formed therein for insertion into the Figure 4 and Figure 5 The state of the plurality of guide grooves 311 of the terminal cover 3 is shown.

[0050] When the terminal cover 3 is mounted on the adapter body 2 , since the terminal cover 3 is guided by the cover mounting groove 25 , mounting of the terminal cover 3 on the adapter body 2 is a simple insertion operation, and the time required for this operation is short.

[0051] Next, a state in which the terminal cover 3 is mounted on the adapter body 2 will be described. Figure 7 This is an external perspective view showing a state in which a connection conversion adapter is attached to the circuit breaker according to the first embodiment. Figure 8 It is a plan view showing a state where a connection conversion adapter is attached to the circuit breaker according to the first embodiment. Fig. 9 is along Figure 8 A cross-sectional view taken along line IX-IX is shown. Fig.10 This is a diagram for explaining the function of discharging gas to the outside in the terminal cover according to the first embodiment.

[0052] like Figure 7 and Figure 8 As shown, in the state where the circuit breaker 100 is installed with the connection conversion adapter 1, the engaging portion 323 of the terminal cover 3 is as shown in FIG. Fig. 9 As shown, the terminal cover 3 is engaged with the cover engaging portion 26 of the adapter body 2. Figure 2 Movement in the direction opposite to the direction indicated by the arrow A shown, that is, the removal direction, is restricted by the cover engaging portion 26 .

[0053] When the terminal cover 3 is mounted on the adapter body 2 installed in the circuit breaker 100, the extension portion 26a of the cover engaging portion 26 is bent toward the screw 5 side as the terminal cover 3 is inserted, and the protrusion 26b of the cover engaging portion 26 returns to its original shape by passing over the engaging portion 323 of the terminal cover 3. As a result, the engaging portion 323 of the terminal cover 3 engages with the protrusion 26b of the cover engaging portion 26, which becomes an obstacle to the movement of the terminal cover 3 in the removal direction, thereby preventing the terminal cover 3 from being separated from the adapter body 2.

[0054] In order for the cover engaging portion 26 to function as a disengagement prevention portion, the extension portion 26a that becomes a beam needs to have a sufficient amount of deflection. However, if the portion that becomes a deflected beam in the cover engaging portion 26 is short, the extension portion 26a of the cover engaging portion 26 may exceed the stress limit and break when it is deflected. Therefore, the extension portion 26a needs to be lengthened to a certain extent so as not to exceed the stress limit. However, if the extension portion 26a is extended long in parallel with the bottom surface 100a of the circuit breaker 100, the size of the connection conversion adapter 1 needs to be increased.

[0055] Therefore, in the connection conversion adapter 1 involved in the first embodiment, as Fig.10 As shown, the insertion direction of the terminal cover 3 is inclined at an angle θ relative to the plane parallel to the bottom surface 100a of the circuit breaker 100, so that the extension portion 26a in the cover engaging portion 26 extends in an oblique direction at an angle θ. Thus, compared with the case where the insertion direction of the terminal cover 3 is set to be parallel to the bottom surface 100a of the circuit breaker 100, the direction parallel to the bottom surface 100a of the circuit breaker 100 can be shortened by an 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 Fig.10 Angle shown.

[0056] In addition, the cover engaging portion 26 is formed on the side of the surface 3a of the terminal cover 3 that is opposite to the screw terminal 101, and the cover engaging portion 26 is in a position that is difficult to touch from the outside. Therefore, it is possible to prevent the terminal cover 3 from being pulled out while the cover engaging portion 26, which serves as the anti-detachment portion, is pressed from above to bend it, and it is possible to further prevent the connection conversion adapter 1 from being removed from the circuit breaker 100.

[0057] In addition, the cover portion 27b of the engagement portion cover 27 is arranged at a position covering the upper portion of the cover engagement portion 26, thereby preventing the cover engagement portion 26 from being touched. Therefore, it is possible to further prevent the terminal cover 3 from being pulled out while the cover engagement portion 26 is pressed from above to bend it, and it is possible to further prevent the connection conversion adapter 1 from being removed from the circuit breaker 100.

[0058] In addition, the guide groove 311 of the terminal cover 3 is inserted into the protrusion 27a of the engagement cover 27 in the adapter body 2, so that the terminal cover 3 is Figure 2 Movement in the direction indicated by the arrow A is restricted by the protrusion 27a.

[0059] In addition, if Fig. 9 As shown, in the state where the circuit breaker 100 is mounted with the connection conversion adapter 1, a part of each cover portion 32 in the terminal cover 3 is opposed to the cover portion 27b 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 27b of the engaging portion cover 27 in addition to the cover mounting groove 25.

[0060] When the circuit breaker 100 is installed with the connection conversion adapter 1, Fig. 9 As shown, 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 covers the upper part of the screw terminal 101 to which the screw 5 is attached. Therefore, when the circuit breaker 100 is mounted with the connection conversion adapter 1, access to the screw 5 by a disassembly tool such as a screwdriver is prevented. In addition, when the circuit breaker 100 is mounted with the connection conversion adapter 1, contact with the screw 5 or the screw terminal 101 by fingers or the like is also prevented.

[0061] The terminal cover 3 can discharge the gas exhausted from the exhaust port 105 of the circuit breaker 100 provided at a position facing the space above the screw terminal 101 to the outside. Next, the function of discharging the gas to the outside in the terminal cover 3 will be described.

[0062] like Fig.10 As shown, the circuit breaker 100 has, on the power supply side, a movable contact 106 and a fixed contact 107 for connecting and disconnecting a circuit, and an arc extinguishing chamber 104 for extinguishing an arc 6 generated between the movable contact 106 and the fixed contact 107. The arc 6 is generated, for example, when the circuit is disconnected.

[0063] When the arc 6 is extinguished in the arc extinguishing chamber 104 , arc gas 7 is generated by the arc 6 . Therefore, in the circuit breaker 100 , an exhaust port 105 is provided adjacent to the arc extinguishing chamber 104 . The exhaust port 105 is used to release the arc gas 7 to the outside of the circuit breaker 100 .

[0064] Here, if there is an obstruction at a position opposite to the exhaust port 105, the arc gas 7 cannot be fully discharged to the outside, and there is a possibility that the circuit breaker 100 may have a deteriorated breaking performance and insulation performance. Fig.10As shown, the insertion direction of the terminal cover 3 is set to an oblique direction, and the terminal cover 3 is mounted on the adapter body 2 in a state where the front end of the terminal cover 3 is located below the exhaust port 105. As a result, the exhaust port 105 is located on the open side above the extension line 9 of the insertion direction of the terminal cover 3. Therefore, the gas release path at the position opposite to the exhaust port 105 can be ensured, and the deterioration of the breaking performance of the circuit breaker 100 can be suppressed.

[0065] As described above, the connection conversion adapter 1 according to the first embodiment includes the adapter body 2 and the plate-shaped terminal cover 3. The adapter body 2 includes: the device connection portion 21 connected to the screw terminal 101 of the circuit breaker 100 as an example of an electrical device; and the conductor connection portion 22 connected to the conductive member (not shown). When the adapter body 2 is mounted on the circuit breaker 100, the terminal cover 3 covers the upper part of the screw terminal 101. The terminal cover 3 is mounted on the adapter body 2 in a state where the front end is located below the exhaust port 105 of the circuit breaker 100 and the base end side is tilted downward from the base end toward the front end. Thus, by arranging the terminal cover 3 in an oblique direction, there is no object that becomes an obstacle in the exhaust portion, and the gas exhausted from the exhaust port 105 of the electrical device provided at a position opposite to the upper space of the screw terminal 101 can be exhausted to the outside. Therefore, it is possible to suppress the reduction of the circuit breaker 100 in the breaking performance.

[0066] In addition, the terminal cover 3 is formed by punching out a resin laminated material. Thus, the connection conversion adapter 1 can be formed using a relatively low-cost terminal cover 3. In addition, the terminal cover 3 only needs to be a plate-shaped resin with a certain thickness, and can be formed as a single component for one adapter body 2, so it can be formed at a relatively low cost.

[0067] The terminal cover 3 also forms the electric test hole 321 which is a hole for testing the voltage of the screw terminal 101. Thus, the electric test can be performed through the terminal cover 3.

[0068] In addition, the adapter body 2 has a cover engaging portion 26, and the cover engaging portion 26 engages with the engaging portion 323 provided on the terminal cover 3. The cover engaging portion 26 is formed on the side of the surface 3a of the terminal cover 3 that is opposite to the screw terminal 101. Thus, the cover engaging portion 26 can be provided at a position that is difficult to touch from the outside, for example, it is possible to prevent the terminal cover 3 from being pulled out while the cover engaging portion 26, which serves as the anti-detachment portion, is pressed from above to bend.

[0069] In addition, the adapter body 2 has a snap-fitting cover 27, and the snap-fitting cover 27 covers the cover snap-fitting portion 26 from above. As a result, the cover snap-fitting portion 26 becomes more difficult to touch from the outside, and it is difficult to remove the connection conversion adapter 1 from the adapter body 2 without damage. Therefore, for example, it is possible to further prevent the terminal cover 3 from being pulled out while the cover snap-fitting portion 26, which serves as the anti-detachment portion, is pressed from above to bend.

[0070] Implementation method 2.

[0071] The connection conversion adapter involved in the second embodiment is different from the connection conversion adapter 1 involved in the first embodiment in that a cover engaging portion and an engaging portion cover corresponding to each pole are provided in one of the plurality of connection conversion modules constituting the adapter body. Hereinafter, the same reference numerals are given to the same structures as those of the connection conversion adapter 1 involved in the first embodiment and the description thereof is omitted, and the structure of the adapter body that is different from that of the connection conversion adapter 1 involved in the first embodiment is mainly described.

[0072] Fig.11 It is a perspective view of the appearance of an adapter main body in the connection conversion adapter involved in Embodiment 2 of the present invention. Fig.12 It is composed Fig.11 The external perspective view of one of the multiple connection conversion modules of the adapter body shown. Fig.11 , only the adapter main body 2A in the connection conversion adapter 1A according to the second embodiment is shown.

[0073] Fig.11 The adapter body 2A shown in the figure has three types of connection conversion modules 28a, 28b, 28c and a body cover 29. Each connection conversion module 28a, 28b, 28c has one conductor connection portion 22. Fig.11 In the adapter body 2A shown, a plurality of connection conversion modules 28a, 28b, and 28c are connected in a stacked manner, thereby making it easy to obtain a connection conversion adapter 1A that supports a plurality of electrical devices including single-pole type electrical devices and multi-pole type electrical devices.

[0074] In addition, the plurality of connection conversion modules 28a, 28b, and 28c have different shapes from each other so that they can be connected in a stacked manner, and the positions at which they are arranged when connected in a stacked manner are determined. Fig.11 In the adapter body 2A shown, the connection conversion modules 28a, 28b, 28c, 28b, 28c and 28b are connected in an array. In addition, the body cover 29 is connected to the connection conversion module 28b.

[0075] The connection conversion module 28b is commonly arranged one by one for each pole in all poles, regardless of whether it is a single-pole or multi-pole product. In addition, the connection conversion module 28b is formed with a cover engaging portion 26 and an engaging portion cover 27 for preventing the terminal cover 3 from coming off.

[0076] As described above, in the adapter body 2A, the cover engaging portion 26 and the engaging portion cover 27 are provided in the connection conversion module 28b commonly used for all poles. Therefore, even if the number of poles of the adapter body 2A is increased or decreased, by increasing or decreasing the number of the cover portions 32 of the terminal cover 3, it is possible to easily obtain the terminal cover 3 corresponding to the connection conversion adapter 1A after the change in the number of poles, and the cost of design can be reduced.

[0077] In addition, since the insertion direction of the terminal cover 3 is orthogonal to the coupling direction of the connection conversion modules 28a, 28b, 28c, the movement of the connection conversion modules 28a, 28b, 28c in the connection direction after the terminal cover 3 is inserted is restricted. Therefore, the connection conversion modules 28a, 28b, 28c can be connected more firmly.

[0078] As described above, the adapter body 2A involved in the second embodiment has a plurality of conductor connection parts 22 and a cover engaging part 26. The adapter body 2A has a plurality of connection conversion modules 28a, 28b, 28c arranged in the arrangement direction of the screw terminals 101, and the connection conversion modules 28a, 28b, 28c have the conductor connection parts 22 corresponding to each other among the plurality of conductor connection parts 22. The plurality of cover engaging parts 26 are each formed in one type of connection conversion module 28b among the plurality of connection conversion modules 28a, 28b, 28c. Thus, the number of poles of the adapter body 2A can be easily increased or decreased, and the cost spent on design can be reduced.

[0079] In the above-mentioned embodiments 1 and 2, the circuit breaker 100 is described as an example of an electrical device, but it can also be applied to an electrical device having a screw terminal 101 and an exhaust port 105 close to the screw terminal 101. For example, the connection conversion adapter 1, 1A can be used for a switch or an electromagnetic contactor instead of the circuit breaker 100. In addition, an electrical device including the connection conversion adapter 1, 1A and the circuit breaker 100 can also be provided. In addition, the circuit breaker 100, the switch, and the electromagnetic contactor all have opening and closing contacts that open and close the circuit connecting the screw terminal 101 on the load side and the screw terminal 101 on the power supply side.

[0080] The configuration described in the above embodiment is an example of the content of the present invention, and can be combined with other known technologies. Part of the configuration can be omitted or changed without departing from the scope of the present invention.

Claims

1. A connection conversion adapter, characterized in that: have: an adapter body having an equipment connection portion connected to a screw terminal of an electrical device and a conductor connection portion connected to a conductive member; and a plate-shaped terminal cover which covers the upper part of the screw terminal when the adapter body is mounted on the electrical device, The terminal cover is attached to the adapter body with its proximal end side in a state where the front end is located below the exhaust port of the electrical device and the terminal cover is tilted downward from the proximal end toward the front end. The terminal cover has: a hole for testing electricity, which is a hole for checking the voltage of the screw terminal; a guide groove, which guides the protrusion provided on the terminal cover; and a snap-fitting portion, which snaps with the cover snap-fitting portion provided on the adapter body, and the terminal cover is arranged in the direction from the front end toward the base end in the order of the hole for testing electricity, the guide groove and the snap-fitting portion.

2. A connection conversion adapter, characterized in that: have: an adapter body having an equipment connection portion connected to a screw terminal of an electrical device and a conductor connection portion connected to a conductive member; and a plate-shaped terminal cover which covers the upper part of the screw terminal when the adapter body is mounted on the electrical device, The terminal cover is attached to the adapter body with its proximal end side in a state where the front end is located below the exhaust port of the electrical device and the terminal cover is tilted downward from the proximal end toward the front end. The adapter body includes: a cover engaging portion engaged with an engaging portion provided on the terminal cover; and an engaging portion cover covering the cover engaging portion from above. The cover engaging portion is formed on a surface side of the terminal cover that faces the screw terminal.

3. A connection conversion adapter, characterized in that: have: an adapter body having an equipment connection portion connected to a screw terminal of an electrical device and a conductor connection portion connected to a conductive member; and a plate-shaped terminal cover which covers the upper part of the screw terminal when the adapter body is mounted on the electrical device, The terminal cover is attached to the adapter body with its proximal end side in a state where the front end is located below the exhaust port of the electrical device and the terminal cover is tilted downward from the proximal end toward the front end. The adapter body has a cover engaging portion that engages with an engaging portion provided on the terminal cover. The conductor connecting parts and the cover engaging parts are respectively provided with a plurality of the conductor connecting parts and the cover engaging parts. The adapter body has a plurality of types of connection conversion modules, which have conductor connection portions corresponding to the plurality of conductor connection portions, and are arranged in the arrangement direction of the screw terminals. The plurality of cover engagement portions are respectively formed on one type of connection conversion module among the plurality of types of connection conversion modules.

4. The connection conversion adapter according to claim 1 or 3, characterized in that: The cover engaging portion is formed on a surface side of the terminal cover that faces the screw terminal.

5. The connection conversion adapter according to claim 1, 3 or 4, characterized in that: The adapter body includes an engagement portion cover that covers the cover engagement portion from above.

6. The connection conversion adapter according to any one of claims 1 to 5, characterized in that: The terminal cover is formed of a resin laminate material obtained by punching.

7. An electrical device, characterized in that: have: The connection conversion adapter according to any one of claims 1 to 6; and A switch contact that opens and closes the 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 terminals on the load side and the screw terminals on the power supply side.

Images