JP5128374B2 - Terminal block device - Google Patents

Description

  The present invention relates to a terminal block device used when one electric wire is branched into a plurality of electric wires, a plurality of electric wires are combined into one electric wire, or a plurality of electric wires are connected. The present invention relates to a terminal cover that covers a connected terminal block, and a terminal block device that has an improved mechanism for mounting the terminal cover to the terminal block.

  For example, in a control panel in which a control device for controlling various electric facilities in a factory is housed, there are many for supplying electric power to each electric device and inputting / outputting various electric signals from each electric device. Are arranged on a crosspiece or rack provided near the wiring duct in the control panel.

  As described in Patent Document 1, for example, each of the arranged terminal block devices has a plurality of partition plates on the upper surface of a rectangular parallelepiped base made of an insulating material, in the longitudinal direction of the base. And is integrally formed. A metal plate is attached to each region on the upper surface of the base partitioned by a plurality of partition plates. One or a plurality of terminals are attached to the metal plate. Therefore, each metal plate and each terminal screwed and fixed to the metal plate constitute a unit terminal block. A terminal block device is formed by forming a plurality of unit terminal blocks on one base.

  Furthermore, a common terminal cover for covering the upper surfaces of the plurality of unit terminal blocks is prepared in advance in the terminal block device in which the plurality of unit terminal blocks are incorporated. The common terminal cover prevents an electric shock from occurring by an operator accidentally contacting each terminal in a state where the electric wires in each unit terminal block are connected.

  And when actually wiring using this terminal block apparatus, after fixing this terminal block apparatus in a switchboard, a required electric wire is connected to each terminal of each unit terminal block. When the connection work of the wires necessary for each terminal is completed, the common terminal cover is screwed and fixed to the side wall of the case that houses all the unit terminal blocks. In this state, the connection place of each terminal and each electric wire is covered with the common terminal cover.

  As described above, by attaching the common terminal cover to the terminal block device, it is possible to prevent the operator from inadvertently touching the terminal in a state where the circuit in which the terminal block device is incorporated is energized.

In addition to the terminal block device described in Patent Document 1 described above, there is a terminal block device proposed in Patent Document 2. In this terminal block device, a base having a step in the short direction is used, the base is partitioned by a plurality of partition plates in the long direction, and a stepped metal plate is attached to each region partitioned by the partition plates. Terminals are attached to the upper and lower stages of each metal plate. And the common terminal cover which covers the upper surface of each unit terminal block with which the terminal was each attached to the upper stage part and lower stage part of the metal plate is attached.
Japanese Utility Model Publication No. 1-115169. No. 1-445100

  However, the terminal block device employing the above-described common terminal cover still has the following problems to be improved.

  That is, the upper surface of each terminal of each unit terminal block of the common terminal cover is covered with the common terminal cover, but on the front and rear surfaces orthogonal to the axial direction of each terminal to which the electric wire of each terminal is connected, Since the electric wire connected to each terminal penetrates, it is not covered with a cover. However, in actual wiring, whether or not an electric wire is connected to each terminal of each unit terminal block, the thickness of the electric wire when connected, and the number of electric wires change each time.

  In this case, in a state where no electric wire is connected to the terminal and power is supplied from the electric wire connected to the other terminal to the terminal attached to the metal plate to which the corresponding terminal is attached, There is a concern that an electric shock accident may occur due to an operator's hand inadvertently touching an energized terminal through the unconnected front face.

  The present invention has been made in view of such circumstances. The front cover covers only the upper surface of the terminal with the terminal cover, and a through window is formed in a portion through which the electric wire penetrates the front, and the shape and size of the through window are formed. Can be easily changed, the gap between the penetrating window and the wire can be narrowed, and the terminal cover can be easily attached to and detached from the terminal block, improving worker safety and wiring work efficiency. An object of the present invention is to provide a terminal block device that can be used.

  The present invention provides a terminal block in which a plurality of terminals are disposed on a conductive metal body and a pair of insulating side plates are attached to both side surfaces of the metal body, and an upper surface that covers the upper surface and the front surface of the terminal block, respectively. It is applied to a terminal block device provided with a terminal cover made of a transparent flexible material consisting of a front portion and a front portion.

  And in order to eliminate the said subject, in the terminal block apparatus of this invention, the terminal cover is provided with respect to a pair of side plate of a terminal block so that attachment or detachment is possible. Furthermore, an inspection window for inspecting the energization state of the terminal is formed on the upper surface of the terminal cover. Furthermore, when connecting an electric wire to each terminal by comprising a plurality of slits drilled in the front portion of the front portion and selectively breaking the non-slit portion between the slits, at least one terminal A slit pattern is formed in which an individual through window through which an electric wire connected to the terminal penetrates and a common through window for a plurality of terminals are alternatively formed.

  In the terminal block device configured as described above, since the terminal cover can be easily attached to and detached from the terminal block, the wiring change work efficiency of the electric (power) system wired using this terminal block device can be improved. Furthermore, when connecting an electric wire to each terminal, only the passage position (passage region) of one or a plurality of electric wires passing through the front surface portion of the terminal cover can be selected and designated as a through window with a slit pattern. Therefore, the gap between the through window and the electric wire passing through the through window can be minimized. As a result, when the terminal block device is energized, it is possible to prevent an operator from accidentally contacting a terminal with a finger or the like, thereby further improving safety.

  Moreover, in another invention, with respect to the terminal block of the terminal block device described above, it is formed in the vicinity of the upper end in the vertical direction of the front side edges of the pair of side plates, and is curved to the inner position from the width direction end position of the upper end. A pair of curved notches, a pair of guide grooves carved vertically in the pair of side plates, and a notch step portion formed at the opposite end to the front surface in the width direction of the upper end of the pair of side plates. Yes.

  In addition, the terminal cover is formed on the upper surface portion downward, and the terminal cover is fixed to the pair of side plates and is engaged with the pair of curved cutout portions. The projection is inserted into the guide groove in a state where the terminal cover is mounted on the pair of side plates, and is formed downward on the upper surface portion, and the terminal cover is mounted on the pair of side plates. A pair of position fixing ribs that contact the inner surfaces of the pair of side plates in the state, and formed on the opposite end to the front surface part in the width direction of the upper surface part, and the tip in a state where the tip is in contact with the notch step part And a pivot arm for performing a mounting operation and a detaching operation of the terminal cover with respect to the pair of side plates by a pivoting operation with the pivoting center at the center.

  In such a configuration, when the terminal cover is mounted on the terminal block, by pressing the rotating arm of the terminal cover against the notch step at the rear end of the side plate of the terminal block, Since the locking portion of the terminal cover is bent from the end in the width direction to the inner position and locked to the curved notch, the terminal cover is not detached from the terminal block due to vibration or the like. The position in the width direction of the terminal cover is fixed by the guide groove and the protrusion, and the position in the longitudinal direction of the terminal cover is achieved by the position fixing rib abutting against the inner surface of the side plate.

  Thus, by adopting a mechanism for attaching and detaching the terminal block of the terminal cover to the pair of side plates, the work efficiency of wiring work using this terminal block device can be further improved.

  Further, similarly to the previous invention, the above-described inspection window for inspecting the energization state of the terminal is provided on the upper surface portion of the terminal cover, and a slit pattern is formed on the front surface portion. Yes.

  Moreover, in the terminal block device of another invention, the notch step part formed in the opposite end with respect to the said front surface of the width direction of the upper end of a pair of side plate is provided with respect to the terminal block.

  A pair of position fixing ribs formed on the upper surface portion of the terminal cover toward the lower side and contacting the inner surfaces of the pair of side plates in a state where the terminal cover is mounted on the pair of side plates; A pair of position fixings formed at the opposite end to the front surface portion in the width direction and facing the notch step portions formed on the pair of side plates in a state where the terminal cover is mounted on the pair of side plates. It is formed with an arm, an inspection window formed on the top surface, and an inspection window for inspecting the current-carrying state of the terminals, and a plurality of slits drilled at the opposing positions of each terminal on the front surface, and the non-slit portion between the slits is selected When the electric wire is connected to each terminal by breaking, an individual through window through which the electric wire connected to at least one terminal penetrates and a common through window for a plurality of terminals are alternatively formed. And a pattern.

  Therefore, it is possible to achieve substantially the same operational effects as the above-described inventions.

  According to the terminal block device of the present invention, the terminal cover is provided so as to be easily attachable to and detachable from the pair of side plates attached to both sides of the metal body to which the terminal of the terminal block is attached. Furthermore, a through window with a shape corresponding to the connection state of the electric wire to the terminal of the terminal cover can be selected from the slit pattern on the front surface of the terminal cover, so that the gap between the through window and the electric wire can be narrowed, and operator safety Can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a terminal block and a terminal cover in the terminal block device according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which the terminal cover is mounted on the terminal block.

  The terminal block device 1 of this embodiment includes a terminal block 2 and a terminal cover 3 formed of a flexible material such as a transparent plastic that covers the front surface and the upper surface of the terminal block 2.

  In the terminal block 2, a conductive metal plate 5 bent in a step shape is attached on a base 4 formed of a hard insulating plastic material. Two terminals 6a and 6b are attached to the lower metal plate 5a of the metal plate 5 in the longitudinal direction. Two terminals 7a and 7b are attached to the upper metal plate 5c through the vertical metal plate 5b in the longitudinal direction. Specifically, each terminal 6a, 6b, 7a, 7b is formed of a terminal bolt, and is screwed in a screw hole engraved in the metal plates 5a, 5c, with the tip of the wire 8 to be connected sandwiched. Fix it.

  On both sides in the longitudinal direction of the conductive metal plate 5 bent in a staircase shape, side plates 9a and 9b formed of the same hard insulating plastic as the base 4 are connected by bolts (not shown). Tightened and fixed.

  In addition, the rear surface of the terminal block 2 of this embodiment is covered with a cover (not shown).

  A curved notch 12 that is curved from the position in the width direction of the upper end 10 to the inner position is formed in the vicinity of the upper end in the vertical direction of the vertical front side edge 11 orthogonal to the horizontal upper end 10 in each side plate 9a, 9b. Has been. Further, the side plates 9a and 9b are provided with guide grooves 13 whose upper ends are opened in the upper end portion 10 in the vertical direction. Moreover, the notch step part 14 is formed in the opposite side edge with respect to the front surface of the width direction of the upper end part 10 of each side plate 9a, 9b. In addition, the hole 15 for a connecting bolt mentioned above is drilled in the lower part of each side plate 9a, 9b.

  Next, the terminal cover 3 to be attached to and detached from the side plate 9 of the terminal block 2 is shown in an exploded perspective view in FIG. 1, a perspective view in FIG. 2, a perspective view in FIG. 3 (a), and a side view in FIG. This will be described with reference to FIG. 3 and the top view of FIG. The terminal cover 3 includes an upper surface portion 16 that covers the upper surface of the terminal block 2 and a front surface portion 17 that covers the front surface of the terminal block 2.

  The upper surface portion 16 that covers the upper surface has two inspection windows 18 for inspecting the energization state of the terminals 6a, 6b, 7a, and 7b attached to the metal plates 9a and 9c of the terminal block 2, and terminal numbers (signal names). The plate mounting portion 19 for mounting the plate is formed. Further, an operation having a U-shaped cross-sectional shape is provided at the rear end portion of the upper surface portion 16 so that an operator can grasp the terminal cover 3 by hand when the terminal cover 3 is manually attached to or detached from the side plates 9a and 9b. The knob 20 is integrally formed.

  Further, in a state where the terminal cover 3 is mounted on the side plates 9a and 9b, at the end portion of the upper surface portion 16 where the upper end portion 10 of the side plates 9a and 9b abuts, a locking portion that curves downward is provided at a position near the front surface portion 17. A portion 21 is formed. When the terminal cover 3 is attached to the terminal block 2, the locking portion 21 is locked to the curved notch 12.

  Further, a protrusion 22 to be inserted into the guide groove 13 is formed on the lower surface of the upper surface portion 16 where the guide groove 13 of the upper end portion 10 of the side plate 9a, 9b contacts. Further, a rotating arm 23 is formed at a position opposite to the front surface portion 17 in the upper end portion 10 of the side plates 9a and 9b of the upper surface portion 16. Further, a pair of position fixing ribs 24 are formed to contact the inner surfaces of the side plates 9a and 9b with the terminal cover 3 mounted on the side plates 9a and 9b.

  A slit pattern 25 is formed on the front surface portion 17 of the terminal cover 3 as shown in FIG. For example, as shown in FIG. 2, the slit pattern 25 is formed by connecting the electric wires 8 to necessary terminals among the six terminals 6 a, 6 b, 7 a, and 7 b of the terminal block 2. It is composed of a plurality of (in the embodiment, a total of nine) slits 27 that are drilled in advance to form a penetrating window 26 that passes therethrough.

  Then, the operator alternatively forms a plurality of types of through windows 26 by breaking the non-slit portion 28 between the slits 27 in the slit pattern 25 with a tool such as a nipper, for example. Is possible. As shown in FIGS. 4A to 4F, six types of through windows 26a, 26b, 26c, 26d, 26e, and 26f can be formed. In addition, since each penetration window 26a-26f needs to mount | wear with the terminal cover 3 in the state which connected each electric wire 8 to each terminal 6a-7b, the lower end of each penetration window 26a-26f is opened.

  The shapes of the through windows 26a to 26f are roughly divided as shown in the through windows 26a, 26b, 26d, and 26f, as shown in the individual through windows corresponding to the terminals 6a to 7b, and the through windows 26c and 26e. And common through windows corresponding to the plurality of terminals 6a to 7b.

  Furthermore, the size and shape of the through windows 26a to 26f can be selected and set in accordance with the number n and the thickness d of the electric wires 8 that pass through one through window 26a to 26f. For example, in the penetration window 26a, one thick electric wire 8 penetrates, and a plurality of thin electric wires 8 penetrates the penetration window 26d having a large area.

  Thus, according to the connection state of the electric wire 8 of each terminal 6a-7b, the shape of the penetration window 26 can be selectively set from several penetration windows 26a-26f.

  Next, an operation procedure in which the worker mounts the terminal cover 3 thus configured on the side plates 9a and 9b of the terminal block 2 will be described with reference to FIG. First, a through window 26 having a shape necessary for the front surface portion 17 is prepared before mounting. Then, as shown in FIG. 5A, the tip of the rotating arm 23 of the terminal cover 3 is pressed against the notch 14 at the rear end of the upper end 10 of the side plates 9a and 9b of the terminal block 2, thereby 3 is rotated clockwise. In this case, the terminal cover 3 is rotated until the upper surface portion 16 contacts the upper end portions 10 of the side plates 9a and 9b. As a result, as shown in FIG. 5 (b), the locking portion 21 of the terminal cover 3 extends and deforms, gets over the front end position of the upper end portion 10, then contracts, and moves to an inner position from this front end position. And is locked to the curved notch 12. Therefore, the terminal cover 3 is not detached from the terminal block 2 due to vibration or the like.

  Moreover, since the protrusion 22 of the terminal cover 3 is inserted into the guide groove 13 of the side plates 9a and 9b in the mounted state, the position in the width direction of the terminal cover 3 is fixed. Furthermore, in the mounted state, as shown in FIG. 6, the pair of position fixing ribs 24 of the terminal cover 3 abuts on the inner surfaces of the side plates 9a and 9b. Therefore, the longitudinal position of the terminal cover 3 is fixed.

  Next, an operation of removing the terminal cover 3 attached to the side plates 9a and 9b of the terminal block 2 from the terminal block 2 will be described with reference to FIG. The operator pinches the operation knob 20 and the front end portion of the upper surface portion 16 with two fingers of the hand, and rotates it counterclockwise around the tip of the rotation arm 23. During this rotation process, the locking portion 21 is released from the curved notch portion 12, and the protruding portion 22 is released from the guide groove 13.

  As described above, by adopting a mechanism for attaching and detaching the terminal cover 2 to the side plates 9a and 9b of the terminal block 2 with a simple operation by an operator, the work efficiency of the wiring work using the terminal block device 1 is further improved. It can be further improved.

(Second Embodiment)
FIG. 8 is an exploded perspective view showing a terminal block device according to a second embodiment of the present invention. The same parts as those of the terminal block device 1 of the first embodiment shown in FIG.

  In the terminal block 2a of the terminal block device 1a of the second embodiment, the built-in metal plate 30 is placed in the terminal block 2a as shown in FIG. 9, and the metal plates 5a and 5b in the first embodiment of FIG. In addition to 5c, vertical metal plates 5d and 5d are integrally formed. The terminals 6a and 6b are attached to the metal plate 5a, the terminals 7a and 7b are attached to the metal plate 5c, and the terminals 7a and 7b are attached to the metal plate 5d.

  And as shown in FIG. 8, each side plate 31a, 31b of the terminal block 2a in which this large sized metal plate 30 was incorporated is each side plate 9a, 9b of 1st Embodiment shown in FIG. Are symmetrically arranged and integrally formed. Therefore, as shown in FIG. 8, the terminal covers covering the upper surface of the terminal block 2a and the front surfaces formed on both sides in the width direction are the two terminal covers 3 of the first embodiment shown in FIG. The side plates 31a and 31b are provided so as to be individually attachable and detachable to the side plates 9a and 9b in the width direction.

  Therefore, in this embodiment, it is possible to take out the electric wire 8 from the front surface direction and the rear surface direction of the terminal block 2a. Also in the terminal block device 1a of the second embodiment configured as described above, it is possible to achieve substantially the same operational effects as the terminal block device 1 of the first embodiment shown in FIG.

(Third embodiment)
FIG. 10 is an exploded perspective view showing a terminal block device according to a third embodiment of the present invention. The same parts as those of the terminal block devices 1 and 1a of the first and second embodiments shown in FIGS. 1 and 8 are denoted by the same reference numerals, and detailed description of the overlapping parts is omitted.

  In the terminal block device 1b of the third embodiment, the terminal block 2a has substantially the same shape as the terminal block 2a of the second embodiment except for the shape of the metal plate 30, and the side plates 31a and 31b are shown in FIG. 1 has a configuration in which the side plates 9a and 9b of the first embodiment shown in FIG. Therefore, as shown in FIG. 10, the terminal cover covering the upper surface of the terminal block 2a and the front surfaces formed on both sides in the width direction has two terminal covers 3a in the width direction of the side plates 31a and 31b. The side plates 9a and 9b are provided so as to be individually attachable and detachable.

  11 (a) and 11 (b) are a perspective view and a front view of the terminal cover 3a, and FIGS. 12 (a) and 12 (b) are a side view and a top view of the terminal cover 3a. The same parts as those of the terminal cover 3 of the first embodiment shown in FIGS. 3A, 3 </ b> B, and 3 </ b> C are denoted by the same reference numerals, and redundant description is omitted.

  In the terminal cover 3a, an operation knob 32 having a U-shaped cross section is formed along the inside of the upper end portion 10 of each side plate 9a, 9b of the upper surface portion 16. An anti-slip portion 34 is formed on a part of the side surface of the operation knob 32. Further, a pair of position fixing ribs 24 that contact the inner surfaces of the side plates 31a (9a) and 31b (9b) with the terminal cover 3a mounted on the side plates 31a (9a) and 31b (9b) are provided on the upper surface portion 16. Is formed.

  Further, a position fixing arm 33 is formed downward at a position opposite to the front surface portion 17 in the upper end portion 10 of the side plates 31a (9a) and 31b (9b) of the upper surface portion 16. With the terminal cover 3a mounted on the side plates 31a (9a) and 31b (9b), the tip of the position fixing arm 33 is placed on the upper end 10 of the side plates 31a (9a) and 31b (9b) of the terminal block 2a. It abuts on the formed notch step 14. Moreover, the slit pattern 25 shown in FIG.11 (b) is formed in the front surface part 17 of the terminal cover 3a similarly to the terminal cover 3 previously.

  When the terminal cover 3a configured in this manner is attached to the upper end portion 10 of the side plates 31a (9a) and 31b (9b) of the terminal block 2a, the operation knobs 32 on both sides are grasped with two fingers of the hand, Push the lower end of the operation knob 32 having a U-shaped cross section along the inner surfaces of the side plates 31a (9a) and 31b (9b) of the terminal block 2a until the tip of the position fixing arm 33 comes into contact with the position of the notch step portion 14. .

  When the terminal cover 3a is thus attached to the side plates 31a (9a) and 31b (9b), the non-slip portions 34 on the side surfaces of the operation knob 32 are attached to the inner surfaces of the side plates 31a (9a) and 31b (9b). Since the terminal cover 3a is in a biased state, the terminal cover 3a is not detached from the terminal block 2a due to vibration or the like.

  Further, in the mounted state, the position fixing arm 33 of the terminal cover 3a is fixed to the notch step portion 14, and the front surface portion 17 contacts the front side edge 11 of the side plates 31a (9a) and 31b (9b). The position in the width direction of the cover 3a is fixed. Furthermore, in the mounted state, as shown in FIG. 12B, the pair of position fixing ribs 24 of the terminal cover 3a abuts against the inner surfaces of the side plates 31a (9a) and 31b (9b). Therefore, the longitudinal position of the terminal cover 3a is fixed.

  Next, a procedure for removing the terminal cover 3a attached to the side plates 31a (9a) and 31b (9b) of the terminal block 2a from the terminal block 2a will be described. For example, when removing the terminal cover 3a attached to the right side, grasp the entire terminal cover 3a with the right thumb in the center of the terminal block 2a, the middle finger, the third finger, and the little finger outside, and use the index finger to push the operation knob 32 on the upper side. The terminal cover 3a is lifted up and removed from the terminal block 2a by pulling on the terminal block 2a.

  In the terminal cover 3a configured as described above, similarly to the terminal cover 3, the terminal cover 3a can be easily attached to and detached from the terminal block 2a. Further, since the slit pattern 25 is formed on the front surface portion 17, the through window 26 having a plurality of types and sizes set in advance according to the number and thickness of the electric wires 8 connected to each terminal. Therefore, the optimum through window 26 can be selected.

The disassembled perspective view which shows schematic structure of the terminal block apparatus concerning 1st Embodiment of this invention. The perspective view of the terminal block apparatus concerning the embodiment The figure which shows the perspective view, side view, and top view of the terminal cover integrated in the terminal block apparatus of the embodiment The figure which shows each penetration window formed in the front part of the terminal cover of the embodiment The figure which shows the mounting operation procedure with respect to the terminal block of the terminal cover of the embodiment The top view which shows the state with which the terminal cover of the embodiment was attached to the terminal block The figure which shows the separation operation procedure from the terminal block of the terminal cover of the embodiment The disassembled perspective view which shows schematic structure of the terminal block apparatus concerning 2nd Embodiment of this invention. The figure which shows the shape of the metal plate integrated in the terminal block of the embodiment The disassembled perspective view which shows schematic structure of the terminal block apparatus concerning 3rd Embodiment of this invention. The figure which shows the perspective view and front view of the terminal cover which are integrated in the terminal block apparatus of the embodiment The figure which shows the side view and top view of a terminal cover integrated in the terminal block apparatus of the embodiment

Explanation of symbols

  1, 1a, 1b ... terminal block device, 2, 2a ... terminal block, 3, 3a ... terminal cover, 4 ... block, 5, 30 ... metal plate, 6a, 6b, 7a, 7b, 7c, 7d, 7e ... terminal 8 ... Electric wire, 9a, 9b, 31a, 31b ... Side plate, 10 ... Upper end, 11 ... Front side edge, 12 ... Curved notch, 13 ... Guide groove, 14 ... Notch step, 16 ... Upper surface, 17 ... Front part, 18 ... Inspection window, 19 ... Plate mounting part, 20, 32 ... Operation knob, 21 ... Locking part, 22 ... Projection part, 23 ... Rotating arm, 24 ... Position fixing rib, 25 ... Slit pattern, 26 ... through window, 27 ... slit, 28 ... non-slit part, 33 ... position fixing arm, 34 ... non-slip part

Claims (3)

A terminal block in which a plurality of terminals are disposed on a conductive metal body and a pair of insulating side plates are attached to both sides of the metal body, and an upper surface portion and a front surface portion that respectively cover the upper surface and the front surface of the terminal block In a terminal block device comprising a terminal cover made of a transparent flexible material consisting of:
The terminal cover is
For the pair of side plates of the terminal block, it is provided detachable,
An inspection window for inspecting the energization state of the terminal is formed on the upper surface portion,
When connecting an electric wire to each terminal by comprising a plurality of slits perforated in the front portion of the front surface portion and selectively breaking the non-slit portion between the slits, at least one An individual through window through which an electric wire connected to a terminal passes, and a slit pattern in which a common through window for a plurality of terminals is alternatively formed is formed. A terminal block in which a plurality of terminals are disposed on a conductive metal body and a pair of insulating side plates are attached to both sides of the metal body, and an upper surface portion and a front surface portion that respectively cover the upper surface and the front surface of the terminal block In a terminal block device comprising a terminal cover made of a transparent flexible material consisting of:
The terminal block is
A pair of curved notches formed in the vicinity of the upper end in the vertical direction of the front side edges of the pair of side plates and curved from the width direction end position of the upper end to the inner position;
A pair of guide grooves carved vertically in the pair of side plates;
A notch step portion formed at the opposite end to the front surface in the width direction of the upper end of the pair of side plates,
The terminal cover is
A locking portion that is formed downward on the upper surface portion and is locked to the pair of curved cutout portions in a state where the terminal cover is mounted on the pair of side plates,
A protrusion that is formed downward on the upper surface portion and is inserted into the guide groove in a state where the terminal cover is mounted on the pair of side plates;
A pair of position fixing ribs formed downward on the upper surface portion, the terminal cover being in contact with the inner surfaces of the pair of side plates in a state where the terminal cover is mounted on the pair of side plates;
The terminal cover is formed by a pivoting operation with the tip at the center of rotation in a state where the tip is in contact with the notch step portion at the end opposite to the front surface in the width direction of the upper surface. A rotating arm for performing a mounting operation and a detaching operation on the pair of side plates;
An inspection window formed on the upper surface portion for inspecting the energization state of the terminal;
In the case of connecting a wire to each terminal by forming a plurality of slits formed at positions facing each terminal in the front surface portion and selectively breaking a non-slit portion between the slits, at least one A terminal block device comprising: an individual through window through which an electric wire connected to a terminal penetrates; and a slit pattern in which a common through window for a plurality of terminals is alternatively formed. A terminal block in which a plurality of terminals are disposed on a conductive metal body and a pair of insulating side plates are attached to both sides of the metal body, and an upper surface portion and a front surface portion that respectively cover the upper surface and the front surface of the terminal block In a terminal block device comprising a terminal cover made of a transparent flexible material consisting of:
The terminal block has a notch step portion formed at the opposite end to the front surface in the width direction of the upper ends of the pair of side plates.
A pair of position fixing ribs formed downward on the upper surface portion, the terminal cover being in contact with the inner surfaces of the pair of side plates in a state where the terminal cover is mounted on the pair of side plates;
The upper surface portion is formed at the opposite end to the front surface portion in the width direction, and contacts the notch step portion formed on the pair of side plates in a state where the terminal cover is mounted on the pair of side plates. A pair of position fixing arms;
An inspection window formed on the upper surface portion for inspecting the energization state of the terminal;
In the case of connecting a wire to each terminal by forming a plurality of slits formed at positions facing each terminal in the front surface portion and selectively breaking a non-slit portion between the slits, at least one A terminal block device comprising: an individual through window through which an electric wire connected to a terminal penetrates; and a slit pattern in which a common through window for a plurality of terminals is alternatively formed.

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