JP5865891B2 - Protective cover for disconnect terminal block - Google Patents

Description

  The present invention is used as a wiring relay / branching device in distribution boards, control panels and monitoring panels of nuclear power plants, thermal power plants and substations, for example, and inserted into a wiring route to change wiring connections and check system operation The present invention relates to a protective cover for a disconnect terminal block that can physically disconnect or connect an electric circuit at times.

  The conventional disconnect terminal block can physically disconnect or connect the electrical circuit by pulling up or pushing in the terminal opening / closing knob when changing the connection of the wiring path or confirming the operation of the system. There is a risk that the terminal opening / closing knob may be pulled up or pushed in during work. For example, there is a possibility that an electrical connection between the electrical product to be cut off and the control panel may be energized by an incorrect terminal opening / closing knob operation. Patent Document 1 has been proposed to prevent such an erroneous operation.

  FIG. 9 is a cross-sectional view of a main part showing a conventional disconnect terminal block disclosed in Patent Document 1, and FIG. 9A is a cross-sectional view of a main part showing a closed circuit state in which an electric circuit is connected. (B) is principal part sectional drawing which shows the open circuit state by which the electric circuit was interrupted | blocked.

  As shown in FIGS. 9A and 9B, the conventional disconnect terminal block 100 includes a short-circuit leaf spring 102 integrally attached to a terminal opening / closing knob 101 between a pair of conductive plates 103. The circuit is opened and closed by inserting or pulling up.

  To change from the closed circuit state of FIG. 9A to the open circuit state of FIG. 9B, the disconnect terminal opening / closing knob 101 is pulled up, and the pair of conductive plates 103 is opened by the short-circuit leaf spring 102. To. By rotating the knob safety pin 105 in the insertion direction (from top to bottom), the protruding portion 105a at the tip of the knob safety pin 105 is fitted onto the safety pin stopper 104 and locked. This safety pin stopper 104 Thus, even if the disconnecting terminal opening / closing knob 101 is to be inserted downward, the overhanging portion 105 a of the knob safety pin 105 is stopped on the safety pin stopper 104. That is, the disconnecting terminal opening / closing knob 101 is accidentally inserted between the pair of conductive plates 103 from the open circuit state, and the pair of conductive plates 103 is not closed by the short-circuit leaf spring 102. Yes.

  To change from the open circuit state of FIG. 9B to the closed circuit state of FIG. 9A, the knob safety pin 105 is rotated in the pulling direction so that the overhanging portion 105a of the knob safety pin 105 and the safety pin are fixed. In a state where the contact of the tool 104 is avoided, the disconnecting terminal opening / closing knob 101 can be inserted from the top to the bottom, and the short-circuit leaf spring 102 can bring the pair of conductive plates 103 into a closed circuit state.

JP 2006-277554 A

  In the conventional disconnection terminal block 100, the safety pin stopper 104 and the safety pin for the knob are provided so that the disconnection terminal opening / closing knob 101 is not accidentally inserted between the pair of conductive plates 103 from the open circuit state to the closed circuit state. 105 is fitted and can be locked, but conversely, the safety pin stopper 104 prevents the disconnecting terminal opening / closing knob 101 from being pulled up accidentally between the pair of conductive plates 103 from the closed circuit state to the open circuit state. And the safety pin 105 for the knob, there is a problem that it cannot be locked. In short, the conventional disconnect terminal block includes a normally open circuit state and a normally closed circuit state at the time of inspection, and locks at least the closed circuit state between the open circuit state and the closed circuit state between the conductive plates 103. There is a problem that erroneous operation cannot be prevented in the state.

  The present invention solves the above-described conventional problems, and is a disconnect terminal block that can prevent erroneous operation by locking at least the closed circuit state between the open circuit state and the closed circuit state between the conductive members, thereby ensuring safety. The purpose is to provide a protective cover.

  The protective cover for the disconnecting terminal block according to the present invention is the protective cover for the disconnecting terminal block in which the conductive member connected to the terminal opening / closing lever is inserted / removed between the both conductive terminal portions. The terminal opening / closing lever is covered so that the operation state of the terminal opening / closing lever is maintained, whereby the above object is achieved.

  Preferably, the protective cover of the disconnecting terminal block according to the present invention is configured to have a U-shaped cross-section with an open bottom, and the upper surface portion extends vertically from the upper surface portion to the center of the connecting portion of both vertical surface portions. Both ears projecting to each other are formed to face each other.

  Further preferably, the flat surface portion and the vertical surface portion are connected from both vertical surface portions of the protective cover of the disconnecting terminal block of the present invention, respectively, covering both the conductive terminal portions and the terminal opening / closing lever, and both the conductive terminal portions. A through-hole is formed at the position of the flat portion shifted from above the screw portion.

  Further, preferably, a side opening lever is provided in the protective cover of the disconnecting terminal block of the present invention, and a side wall that is vertically provided on the insulating unit holding the both conductive terminal portions and serves as a partition wall with an adjacent line is provided. In addition, both engaging portions can be attached to or detached from the constricted portions on both sides of the outer peripheral upper side end face shape of the side wall so as to be attached to or detached from the insulating unit.

  Further preferably, at least the closed circuit state of an open circuit state in which the terminal opening / closing lever is pulled up in the protective cover of the disconnecting terminal block of the present invention and a closed circuit state in which the terminal opening / closing lever is inserted The terminal opening / closing lever is covered.

  With the above configuration, the operation of the present invention will be described below.

  In the present invention, in the protective cover of the disconnecting terminal block in which the conductive member connected to the terminal opening / closing lever is inserted / removed between the both conductive terminal portions, at least the terminal opening / closing lever of the both conductive terminal portions and the terminal opening / closing lever The operation state of the terminal opening / closing lever is held so as to cover the top and the periphery thereof.

  As a result, it is possible to obtain a protective cover for the disconnecting terminal block which can prevent erroneous operation by locking at least the closed circuit state between the open circuit state and the closed circuit state between the conductive members and can ensure safety.

  As described above, according to the present invention, between the conductive members to cover at least the terminal opening / closing lever of both the conductive terminal portions and the terminal opening / closing lever and to maintain the operation state of the terminal opening / closing lever, It is possible to obtain a protective cover for the disconnecting terminal block that can prevent erroneous operation by setting at least the closed circuit state of the open circuit state and the closed circuit state to be in a locked state, thereby ensuring safety.

(A) is a perspective view which shows 2 line structure of the protective cover of the disconnection terminal block in Embodiment 1 of this invention, (b) is a front view of the protective cover, (c) is a side view of the protective cover, ( d) is a top view of the protective cover, and (e) is a longitudinal sectional view taken along line AA ′ of (c). It is 1 unit block diagram which shows the state with which the protective cover 1 of FIG. 1 was mounted | worn with the upper part of the disconnection terminal block with an internal structure. It is a top view which shows the multiple unit structure with which the protective cover 1 of FIG. 1 was mounted | worn with the upper part of the disconnection terminal block. FIG. 4 is a front view of the multiple unit configuration of FIG. 3. (A) is a perspective view which shows 1 line structure of the protective cover of the disconnecting terminal block in Embodiment 2 of this invention, (b) is a front view of the protective cover, (c) is a side view of the protective cover, ( d) is a top view of the protective cover. FIG. 6 is a one-unit configuration diagram illustrating a state in which the protective cover of FIG. 5 is engaged with and attached to a lever square hole of an existing cover member of the disconnect terminal block together with an internal structure. It is a top view which shows the multiple unit structure with which the protective cover of FIG. 5 was mounted on the upper part of the disconnection terminal block. FIG. 8 is a front view of the multiple unit configuration of FIG. 7. It is principal part sectional drawing which shows the conventional disconnection terminal block currently disclosed by patent document 1, Comprising: (a) is principal part sectional drawing which shows the closed circuit state which the electric circuit connected, (b) is an electric circuit interrupted | blocked It is principal part sectional drawing which shows the made open circuit state.

  Below, Embodiment 1 and 2 of the protective cover of the disconnecting terminal block of this invention are demonstrated in detail, referring drawings. In addition, each thickness, length, etc. of the structural member in each figure are not limited to the structure to illustrate from a viewpoint on drawing preparation. Also, the number of protection lines of the protective cover is 2 lines in the first embodiment and 1 line in the second embodiment, but may be a plurality of other lines, and is not limited to the illustrated configuration. Absent. Furthermore, Embodiments 1 and 2 of the present invention can be variously modified within the scope indicated in the claims of the present application. Embodiments obtained by further combining technical means appropriately modified within the scope of the claims of the present application and combinations of the embodiments are also included in the technical scope of the present invention.

(Embodiment 1)
FIG. 1A is a perspective view showing a two-line configuration of a protective cover for a disconnect terminal block in Embodiment 1 of the present invention, FIG. 1B is a front view of the protective cover, and FIG. FIG. 1D is a top view of the protective cover, and FIG. 1E is a longitudinal sectional view taken along line AA ′ of FIG. 1C.

  1 (a) to 1 (e), the protective cover 1 of the disconnect terminal block according to the first embodiment is made of injection-molded insulating resin (for example, polycarbonate), and has a predetermined width and is opposed to the upper surface portion 2. Both vertical surface portions 3 are connected to each other, and are formed in a U-shaped cross section with the lower portion opened. After extending from both open ends of both vertical surface portions 3 by the flat surface portion 4 in the horizontal direction, the vertical surface portion 5 further extends in the vertical direction. Both ear portions 31 that extend upward in the vertical direction with respect to the upper surface portion 2 are connected to the central portion of the upper width of both vertical surface portions 3. These ears 31 are arranged to face each other.

  When these both ears 31 are pinched with fingers from the outside, the open ends are opened to the outside against the inward bias. Two through-holes 41 are formed for each line in both flat surface portions 4 extending from both open ends of the open portion 6 having a U-shaped cross section. When the protective cover 1 is mounted on the upper part of the disconnection terminal block 10 to be described later, the charging part including the screw part is protected by the flat part 4 and the vertical surface part 5, and the through hole 41 is shifted outward from the screw part. And is configured to be able to come into contact with the terminal through an inspection probe or the like through the through hole 41. In short, this through hole 41 is not a hole for a driver but a hole for an inspection probe for a circuit check or the like. Since the through hole 41 is shifted outward from the threaded portion, the driver cannot be operated through the through hole 41.

  Further, both the vertical surface portions 5 outside the opening portion 6 are formed with both engaging portions 51 protruding in the back surface direction and having pointed tips. When the protective cover 1 is mounted on the upper part of the disconnection terminal block 10 which will be described later, the both engaging portions 51 engage with both constricted portions 11a on the upper side wall 11 of the disconnection terminal block 10 which will be described later from both outer sides. Both engaging portions 51 of the protective cover 1 are attached to both constricted portions 11 a of the base 10.

  As described above, the protective cover 1 is made of a transparent resin material such as polycarbonate, and the mark band characters of the disconnect terminal block 10 are passed through the transparent protective cover 1 even when the protective cover 1 is attached to the disconnect terminal block 10. You can read.

  FIG. 2 is a one-unit configuration diagram showing a state in which the protective cover 1 of FIG. 1 is mounted on the upper portion of the disconnect terminal block 10 together with the internal structure.

  In FIG. 2, the protective cover 1 according to the first embodiment is mounted on the upper part of the disconnect terminal block 10. A protective cover 1 according to the first embodiment is a protective cover 1 for a disconnecting terminal block 10 that disconnects or connects a wiring path by pulling up or inserting a terminal opening / closing lever 12, and includes a terminal portion 13 and a terminal opening / closing terminal. It covers the lever 12 and keeps the operation state of the terminal opening / closing lever 12 inoperable from the outside.

  The lower part is formed in a U-shaped cross-section, and both ears 31 projecting upward in the vertical direction from the upper surface part 2 are formed opposite to each other at the center of the connecting part of the two vertical surface parts 3 from the upper surface part 2. ing. When the both ears 31 at the upper end of the protective cover 1 are pinched with fingers from the outside, the opening 6 opens to the outside against the urging force to the inside, and the outer peripheral upper end face of the side wall 11 of the disconnect terminal block 10 Both engaging portions 51 can be attached to or detached from the constricted portion 11a. Both engagement portions 51 projecting inwardly from the two vertical surface portions 5 on the inside by the urging force to the inside of the opening portion 6 and having sharp points at the ends are constricted portions on the outer peripheral upper end surface shape portion of the side wall 11 of the disconnect terminal block 10. The protective cover 1 can be attached to the disconnecting terminal block 10 by being sandwiched and engaged with 11a from both sides. As a result, the terminal opening / closing lever 12 and the terminal portion 13 are covered over two lines to protect the inside so that the hands are not touched, thereby preventing erroneous operation of the terminal opening / closing lever 12 and ensuring safety. The cover 1 can be obtained.

  In this case, since the lever position is shifted to the right side with respect to the center of the left and right sides of the insulating unit 15, the protective cover 1 cannot be attached to the left and right sides. The protective cover 1 can cover both the state where the terminal opening / closing lever 12 is inserted and the state where it is pulled up.

  Although the disconnection terminal block 10 has been described above, a screw plate for fastening (burring processing may be performed on the surface of a rectangular metal plate (for example, Ni plating treatment on the surface of copper or brass) may be threaded. And a screw portion with a screw-up washer that can be fastened to a hexagonal nut therethrough through a screw hole for fastening the conductive connection terminal 13a. Are provided on both sides of the line. Between the screw-up type terminal portions 13 on both sides, there is provided a terminal opening / closing lever 12 having a conductive clip 14 that can be inserted and removed in the vertical direction fixed to the lower end portion.

  A screw-up type terminal portion 13 on both sides of these lines, and a terminal opening / closing lever 12 provided with a conductive clip 14 (a compression spring is mounted in the clip) fixed to the lower end as a conductive member for opening and closing between these lines, Insulator material (insulation) that holds the screw-up type terminal portion 13 on the hexagon nut by inserting the hexagon nut into the non-rotating nut housing portion directly below the fastening screw hole. A unit 15 made of a resin member is provided. Each insulating unit 15 is provided with a side wall 11 that is vertically provided on a unit 15 that holds a terminal opening / closing lever 12 and a screw-up type terminal portion 13 and that serves as a partition wall with an adjacent line. Yes.

  In the protective cover 1, the upper surface portion 2 is connected to both the vertical surface portions 3, the flat surface portion 4 and the vertical surface portion 5 are connected to both the vertical surface portions 3, and covers both the terminal portions 13 and the terminal opening / closing lever 12. A through hole 41 is formed at a position of the flat surface portion 4 that is shifted outward from the upper portion of the screw portion of the child portion 13.

  FIG. 3 is a plan view showing a multi-unit configuration in which the protective cover 1 of FIG. 1 is mounted on the upper part of the disconnect terminal block 10. FIG. 4 is a front view of the multi-unit configuration of FIG.

  3 and 4, the multi-unit configuration of the disconnecting terminal block 10 to which the protective cover 1 of Embodiment 1 is attached is such that the lower part of the plurality of units 15 is passed through aluminum rails 16 and end plates are provided on both sides thereof. Pass 18 each. Furthermore, the fixing members 17 are collectively fastened and fixed together with the plurality of units 15 from the outside of the end plates 18 on both sides thereof.

  As described above, according to the first embodiment, the protective cover 1 of the disconnect terminal block 10 in which the conductive clip 14 as a conductive member connected to the terminal opening / closing lever 12 is inserted and removed between the conductive connection terminals 13a of the both terminal portions 13 is inserted. The terminal opening / closing lever 12 is covered with both terminal portions 13 and the terminal opening / closing lever 12 so as to hold the operation state of the terminal opening / closing lever 12 without any erroneous operation.

  Thereby, the open circuit state and the closed circuit state between the conductive connection terminals 13a can be locked to prevent erroneous operation of the terminal opening / closing lever 12, and the protective cover 1 of the disconnecting terminal block 10 with reliable safety can be obtained. .

  In the first embodiment, the protective cover 1 that covers the screw-up type terminal portion 13 and the terminal opening / closing lever 12 and its periphery and collectively protects two lines has been described. The protective cover 1 covers and protects the screw-up type terminal portion 13 and the terminal opening / closing lever 12 and the periphery thereof, covering three lines or four lines, etc., as well as a plurality of more lines. You may do it.

  Conversely, the protective cover 1 may be configured to cover only the minimum unit of one line by covering the screw-up type terminal portion 13 and the terminal opening / closing lever 12 and its periphery. In this case, the protective cover 1 is attached to the upper part of the disconnection terminal block 10 by engaging the engagement portions 51 from both sides with the constricted portions 11 a of the outer peripheral upper end face shape of both side walls 11 adjacent to the disconnection terminal block 10. It is necessary to let

  In the first embodiment, the case where the protective cover 1 can cover both the state where the terminal opening / closing lever 12 is inserted and the state where the lever 12 is pulled up can be prevented to prevent erroneous operation of the lever is not limited to this. As necessary, the height size can be reduced to cover the state where the terminal opening / closing lever 12 is inserted and to prevent erroneous operation of lifting the terminal opening / closing lever 12 as necessary.

(Embodiment 2)
In the first embodiment, the protective cover 1 that covers the screw-up type terminal portion 13 and the terminal opening / closing lever 12 and the periphery thereof and collectively protects two lines has been described. A protective cover 21 that protects only one line by covering the terminal opening / closing lever 12 by engaging with the lever square hole of the cover member 19 using the existing cover member 19 will be described.

  5A is a perspective view showing a one-line configuration of the protective cover 21 of the disconnect terminal block 10 according to the second embodiment of the present invention, FIG. 5B is a front view of the protective cover 21, and FIG. 5C. FIG. 5D is a side view of the protective cover 21, and FIG. 5D is a top view of the protective cover 21.

  5A to 5D, the protective cover 21 for one line of the disconnect terminal block 10 according to the first embodiment is made of injection-molded insulating resin (for example, polycarbonate), and has a predetermined width on the top surface. Both vertical surface portions 23 are connected from opposite sides of the portion 22, and have an open portion 24 having a U-shaped cross section with its lower end open. Both lower end surface portions of both vertical surface portions 23 are formed as wide portions 23a wider than the plate thickness so that they are not easily deformed even when pressed from above. A hook-like engagement portion 23b that can engage with a lever square hole of the existing cover member 19 is formed from the inside to the outside of each wide portion 23a of the lower end surface portion having a U-shaped cross section. .

  FIG. 6 is a one-unit configuration diagram illustrating a state in which the protective cover 21 of FIG. 5 is engaged with and attached to the lever square hole of the existing cover member 19 of the disconnect terminal block 10 together with the internal structure.

  In FIG. 6, the protective cover 21 according to the second embodiment is attached to each unit by engaging outward with a square hole for lever of an existing cover member 19 attached to the upper part of the disconnect terminal block 10. . The terminal opening / closing lever 12 projects through each insulating unit 15 from the lever square hole of the existing cover member 19. A protective cover 21 further covers the terminal opening / closing lever 12 protruding from the existing cover member 19 for each unit 15. Since the protective cover 21 is of a small size that covers the lowering of the terminal opening / closing lever 12 that has been pushed down, it is used to prevent the terminal opening / closing lever 12 from being pulled up accidentally. As indicated by the dotted line, the protective cover 21A may be of a high size that covers the terminal opening / closing lever 12 that is raised by raising the terminal opening / closing lever 12, and the terminal opening / closing lever 12 may be Insertion can be prevented. When the protective cover 21A has a high size, the protective cover 21 can also function as a low size.

  Both the engaging portions 23b are outwardly engaged with each other, and are engaged with the lever square holes of the existing cover member 19 here. When the lower side of the protective cover 21 having a U-shaped cross section that is opened downward is pinched with a finger from the outside, the open end closes against the urging force of the open portion 24 to the outside of the open end, and the disconnect terminal block 10 The side wall 11 can be easily inserted into the lever square hole of the existing cover member 19 fitted into the constricted portion 11a of the outer peripheral upper end face shape. Thereafter, when the finger pinched from the lower side of the protective cover 21 is removed, the lower open end of the protective cover 21 is opened, and both engaging portions 23b of the protective cover 21 are engaged with the lever square holes of the cover member 19. And are to be fixed. Further, when the lower side of the protective cover 21 having a U-shaped cross section that is open at the lower side is pinched with a finger from the outside, the protective cover 21 can be easily taken out from the lever square hole of the existing cover member 19 and detached.

  As described above, when the lower part of the protective cover 21 is pinched with a finger from the outside, the open end closes against the outside biasing force, and the existing cover attached to the upper part of the side wall 11 of the disconnect terminal block 10 The member 19 can be easily inserted into the lever square hole. The protective cover 21 can be attached to the disconnecting terminal block 10 by being easily engaged in the square holes for levers of the existing cover member 19 by the urging force to the outside of the open end of the protective cover 21. . Thus, the terminal opening / closing lever 12 can be covered line by line to prevent erroneous operation.

  Although the disconnection terminal block 10 has been described above, a screw plate for fastening (burring processing may be performed on the surface of a rectangular metal plate (for example, Ni plating treatment on the surface of copper or brass) may be threaded. And a screw portion with a screw-up washer that can be fastened to a hexagonal nut therethrough through a screw hole for fastening the conductive connection terminal 13a. Are provided on both sides of the line. Between the screw-up type terminal portions 13 on both sides, a terminal opening / closing lever 12 having a conductive clip 14 (with a compression spring mounted therein) as a conductive member that can be inserted and removed in the vertical direction is fixed to the lower end portion from above. It is provided so that it can be operated.

  The screw-up type terminal portions 13 on both sides of these lines and the terminal opening / closing lever 12 provided at the lower end with the conductive clip 14 that opens and closes between them hold the hexagon nuts directly below the screw holes for fastening. An insulative unit 15 made of an insulating material (insulating resin member) for holding a screw-up type terminal portion 13 by inserting a hexagon nut into the non-rotating nut housing portion is provided. A side wall 11 is provided which is vertically provided on a unit 15 holding a terminal opening / closing lever 12 and a screw-up type terminal portion 13 and serves as a partition wall with an adjacent line.

  FIG. 7 is a plan view showing a multi-unit configuration in which the protective cover 21 of FIG. 5 is attached to the upper part of the disconnect terminal block 10. FIG. 8 is a front view of the multi-unit configuration of FIG. 7 and 8, the protective cover 21 is shown with the cover member 19 removed, but the protective cover 21 is engaged with the lever square hole of the cover member 19 and only the terminal opening / closing lever 12 is provided. Only one line is protected.

  7 and 8, the multi-unit configuration of the disconnecting terminal block 10 to which the protective cover 21 of the second embodiment is attached is such that the lower portions of the plurality of units 15 are passed through aluminum rails 16 and end plates are provided on both sides thereof. Pass 18 each. Furthermore, the fixing members 17 are collectively fastened and fixed together with the plurality of units 15 from the outside of the end plates 18 on both sides thereof.

  As described above, according to the second embodiment, the protective cover 21 of the disconnect terminal block 10 in which the conductive clip 14 as a conductive member connected to the terminal opening / closing lever 12 is inserted and removed between the conductive connection terminals 13a of the both terminal portions 13 is inserted. In FIG. 2, only the terminal opening / closing lever 12 is covered so that the operation state of the terminal opening / closing lever 12 is maintained without erroneous operation.

  Thus, at least the closed circuit state between the open circuit state and the closed circuit state between the conductive connection terminals 13a is locked to prevent the erroneous operation, and the protective covers 21 and 21A of the disconnect terminal block 10 that are reliable in safety are obtained. be able to.

  In addition, as mentioned above, although this invention was illustrated using preferable Embodiment 1, 2 of this invention, this invention should not be limited and limited to this Embodiment 1,2. It is understood that the scope of the present invention should be construed only by the claims. It is understood that those skilled in the art can implement an equivalent range based on the description of the present invention and the common general technical knowledge, from the description of specific preferred embodiments 1 and 2 of the present invention. Patents, patent applications, and documents cited herein should be incorporated by reference in their entirety, as if the contents themselves were specifically described herein. Understood.

  The present invention is used as a wiring relay and branch device in switchboards, control panels, monitoring panels, etc. of nuclear power plants, thermal power plants, and substations, for example, and inserted into a wiring path to change wiring connections and check system operation In the technical field of a protective cover for a disconnecting terminal block that physically disconnects or connects an electrical circuit at times, etc., covering at least the terminal opening / closing lever of both the conductive terminal portions and the terminal opening / closing lever and covering the periphery thereof In order to maintain the operation state of the terminal open / close lever, at least the closed circuit state between the open circuit state and the closed circuit state between the conductive members is locked to prevent erroneous operation and to secure the safety of the disconnect terminal block A cover can be obtained.

DESCRIPTION OF SYMBOLS 1 Protective cover 2 Upper surface part 3 Vertical surface part 31 Ear part 4 Flat part 41 Through-hole 5 Vertical surface part 51 Engagement part 6 Opening part of U-shaped cross section 10 Disconnect terminal block 11 Side wall 11a Constriction part of outer peripheral upper end surface shape part 12 Terminal Opening and closing lever 13 Screw-up type terminal (conductive terminal)
13a Conductive connection terminal 14 Conductive clip 15 Unit 16 Rail 17 Fixing member 18 End plate 19 Existing cover member 21, 21A Protective cover 22 Upper surface portion 23 Vertical surface portion 23a Wide portion 23b Engagement portion 24 Open section with a U-shaped cross section

Claims (5)

A protective cover for a disconnecting terminal block in which a conductive member connected to a terminal opening / closing lever is inserted / removed between both conductive terminal portions, the protective cover having an upper surface portion and both vertical surface portions, and a U-shaped cross section with the lower portion open. And is configured to cover both the conductive terminal portions and the terminal opening / closing lever so as to maintain the operation state of the terminal opening / closing lever, and in the center of the connecting portion between the upper surface portion and the two vertical surface portions. In addition, both ears protruding upward in the vertical direction with respect to the upper surface part are formed to face each other, and the protective cover is a through hole formed at a position shifted from above the screw parts of the two conductive terminal parts. Protective cover for disconnect terminal block having   A protective cover for a disconnecting terminal block in which a conductive member connected to a terminal opening / closing lever is inserted / removed between both conductive terminal portions, the protective cover having an upper surface portion and both vertical surface portions, and a U-shaped cross section with the lower portion open. And configured to cover at least the terminal opening / closing lever of the both conductive terminal portions and the terminal opening / closing lever so as to maintain the operation state of the terminal opening / closing lever, A protective cover for a disconnect terminal block in which both ears projecting upward in the vertical direction to the upper surface portion are formed opposite to each other at the center of the connecting portion with both vertical surface portions. Wherein both respectively from the vertical surface portion further vertical surface plane portion is connected, the through holes, disconnect terminal blocks of the protective cover according to claim 1, which is formed on the flat portion.   A side wall is provided in a vertical direction on the insulating unit holding the terminal opening / closing lever and the conductive terminal portions so as to be a partition wall with an adjacent line, and the protective cover has an end face on the outer peripheral upper side of the side wall It has both engaging parts formed so as to engage with the constricted parts on both sides of the shape, and the protective cover is configured to be attached to or detached from the insulating unit by the both engaging parts. The protective cover for the disconnect terminal block according to claim 1 or 2.   2. The terminal opening / closing lever in at least the closed circuit state is covered between an open circuit state in which the terminal opening / closing lever is pulled up and a closed circuit state in which the terminal opening / closing lever is inserted. Or the protective cover of the disconnection terminal block of 2.

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