JP2009139094A - Energization confirmation tool for terminal block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energization confirmation tool which can very simply, easily and instantaneously confirm whether or not electricity is applied to a plurality of terminals composing a terminal block, and, furthermore, is small, light and portable and can prevent short circuit fault from occurring. <P>SOLUTION: The energization confirmation tool for a terminal block 10 having a structure in which a plurality of pairs of units 11 are arranged in parallel, each including an input terminal 12 for connection with an input cable and an output terminal 13 electrically connected with the input terminal 12 for connection with an output cable, and an installation part 14 formed outside these units is fixed with an earth connection fitting 16 has a cover body made of an insulating material. The cover body includes: a plurality of detectors 1 arranged in parallel, each including a conductive contact 2 in contact with the output terminal 13 or the input terminal 12, an energization display lamp 3 and a resistance element 4; a conductor 5 connected with each of the resistance elements 4; and an earth fitting contact 6 which is connected with the conductor 5 and comes in contact with the earth connection fitting 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, it is possible to easily check the energization state of a terminal block used for energizing and connecting a plurality of input side energization cables and a plurality of output side energization cables as well, and an accident occurs. The present invention relates to an energization confirmation tool for a terminal block that can be avoided in advance.

  The present invention includes a plurality of connection terminals for individually connecting a plurality of energization cables on the input side, and a plurality of connection terminals for individually connecting a plurality of energization cables on the output side. It is intended for terminal blocks arranged in parallel.

Many terminal blocks having such a structure have been proposed and are well known and used in the market. As such a prior art, for example, as can be seen in Patent Document 1 below, an input terminal having a plurality of connection screws for connecting an input side electric wire, and a terminal electrically connected to the input terminal A terminal block device in which a plurality of output terminals provided with a plurality of connection screws for connecting the output side electric wires are arranged in parallel and used as one block body is shown, and the following patent document 2 includes a plurality of unit bodies each including an input terminal having an input-side electric wire connecting screw and an output terminal having an output-side electric wire connecting screw electrically connected to the input terminal. A terminal block arranged in parallel and used as one block body is shown. And the terminal body crimp-connected to the electric wire end using these electric wire connecting screws is attached, and the input side electric wire and the output side electric wire are electrically energized.
JP 2006-344393 A JP 2006-318875 A

  In addition, the terminal blocks described in these Patent Documents 1 and 2 are screwed to a required fixing plate using fixing screws at the outer portions in the parallel direction of the respective block bodies. For example, when screws are fixed to a switchboard, a distribution box, or the like, the fixing screw acts as a grounding metal fitting.

  However, in this type of terminal block currently in use, whether it is the input terminal side or the output terminal side, whether or not it is energized can be easily and easily checked. In addition, it has a problem that it cannot be performed instantaneously, and as a result, it is also a predisposition to induce a short-circuit accident.

  Therefore, the present invention is an energization confirmation tool that can very easily and instantly confirm the current state of the terminal block, that is, whether or not electricity is applied to a plurality of terminals constituting the terminal block. The first purpose is to provide a battery that is small in size and light in weight and easy to carry, and can prevent the occurrence of unforeseen circumstances such as a short circuit accident. It was developed for the purpose of proposing tools.

  To explain the main configuration of the terminal block energization confirmation tool according to the present invention in order to achieve the object, that is, the configuration according to claim 1 with the reference numerals used in the description of the embodiment added, an input cable will be described. A plurality of pairs of units 11 each having a connection input terminal 12 and an output cable connection output terminal 13 electrically connected to the input terminal 12 are arranged in parallel, and an attachment portion 14 formed on the outer side of these units 11. Is an energization state confirmation tool of the terminal block 10 which is structured to be fixed by a ground connection fitting 16, and is a conductive contact 2, an energization indicator lamp 3, and a resistance element 4 that are in contact with the input terminal 12 or the output terminal 13. A plurality of parallelly arranged bodies of detectors 1, a conductor 5 connected to each of the resistance elements 4, and a grounding metal contact 6 connected to the conductor 5 and in contact with the grounding metal fitting 16. Cover body A is are those where the structure is formed of an insulator.

  Moreover, the structure of Claim 2 makes it the structure by which the cover body C said in the structure of the said Claim 1 is formed with the transparent raw material which can be seen through internally.

  According to the third aspect of the present invention, the cover projection C in the configuration of the first or second aspect is provided with the fitting projection 8 for attaching / detaching to the terminal block 10 from the front wall 7a and the rear wall 7b. , 8 is made to be suspended.

  The energization confirmation tool of the terminal block referred to in the present invention includes a plurality of detectors composed of conductive contacts, energization display lamps, and resistance elements arranged in parallel with the output terminal or the input terminal, and each of these resistors. Since the cover body is provided with a conductor connected to the element and a ground metal contact that is connected to the conductor and contacts the ground connection metal fitting, the cover body is simply pressed against the detected terminal block from above. When electricity is applied to the detected terminal by the operation of, the current flows through the earthing bracket contactor that comes in contact with the conductive contact, energization indicator lamp, resistance element, conductor, and grounding fitting. When the lamp emits light and no electricity is applied to the detected terminal, the energization indicator lamp does not emit light, so that multiple terminals can be energized with almost one touch. We can expect the effect of that. Further, since the cover body is formed of an insulator, there is no risk of electric shock and it has an advantage that it can be used with confidence.

  In addition, in the case where the cover body is formed of a transparent material that can be seen through inside as in claim 2, the inside energization indicator lamp can be confirmed through the cover body. There is an advantage that confirmation of the energized state can be further facilitated.

  Further, as described in claim 3, when the cover body has a configuration in which the fitting projections 8, 8 for detaching from the front wall 7a and the rear wall 7b to the terminal block 10 are suspended. In the state where the cover body is attached to the terminal block, it is possible to confirm the energized state of the plurality of terminals, and there is an advantage that the confirmation items can be recorded in a record book or the like in a state of being released.

  In carrying out the present invention, if the cover body is made of an insulating material and made of a transparent material that can be seen through, and can be attached to the terminal block, the terminal can be safely used. This is a preferred embodiment in that it can be attached to and detached from the base, and the internal energization indicator lamp can be confirmed from the outside while attached to the terminal base. Moreover, when the partition for insulation is formed between each detection body, it is preferable at the point which can mount | wear to a terminal block more safely.

  Embodiments of the present invention will be described below with reference to the drawings. In the attached drawings, FIGS. 1 to 4 are a plan view, a front view, an AA line end view and a right side view in FIG.

  First, the structure of this terminal block will be described. The terminal block 10 shown here is the same as the input terminal 12 provided with a fastening bolt for fastening and electrically connecting a terminal fitting 33 crimped to the tip of the insulation-coated electric wire 31 on the lower side in FIG. Similarly, on the upper side in the figure, an output terminal 13 having a fastening bolt for fastening and electrically connecting a terminal fitting 34 crimped to the tip of the insulation-coated electric wire 32 and these terminals 12 and 13 are shown. A unit 11 is formed by pairing with the flat metal fitting 18 shown in FIG. 3 which is electrically connected through a bolt fastening hole. In the embodiment, three units are arranged in parallel. End members 14 and 14 as mounting portions formed in an L shape in front view are disposed on the left and right outer sides, and are fastened and connected by bolts 14b and 14b in FIG. 4 to form a block body. Further, as shown in FIG. 1, a mounting hole 15 for bolt connection penetrating in the vertical direction is formed in the horizontal portions 14a and 14a of the end members 14 and 14, and the drawing is made using this mounting hole 15. As shown in FIG. 2, it is fixed to the attachment object, for example, the switchboard D with the metal bolt 16 so as to act as a ground connection fitting, and is connected to the ground. Further, as shown in FIG. 3, the flat metal fitting 18 is supported by a gap formed between the upper partition wall 17a and the lower support wall 17b. For example, a rated voltage of 100V or 200V is applied to the input terminal 12.

  FIGS. 5 to 11 are views for explaining a first embodiment of the energization confirmation tool of the present invention. FIG. 5 is a plan view, FIG. 6 is a plan view on the inner surface side in which the figure is reversed in the left-right direction, 7 is a left side view, FIG. 8 is a right side view, FIG. 9 is a front view, FIG. 10 is a sectional view taken along line BB in FIG. 5, and FIG. 11 is a sectional view taken along line CC in FIG.

  The cover body C of the energization confirmation tool shown in the first embodiment is not particularly limited to a molding material, but is a hard transparent material that can be seen through the inside, as seen in FIG. It is formed in a shape, and includes front and rear walls 7a and 7b and a side wall 7c on one side.

  Thus, on the inner surface side, as shown in FIGS. 6 and 11, the conductive contact 2 bent in a U-shape in a side view in which the free end side is brought into contact with the input terminal 12 of the terminal block 10, and A neon lamp 3 as an energization display lamp in which one of the conducting wires is connected to the proximal end side of the contact 2 and a resistance element 4 in which one conducting wire is connected to the other conducting wire of the lamp 3. A plurality of detection bodies 1 as a set, three sets in this embodiment, are arranged in parallel at intervals corresponding to the parallel intervals of the units 11 in the terminal block 10, and the other conductors of the resistance elements 4 are As shown in FIGS. 1 and 6, each of the conductors 5 made of a conductive plate formed in an L shape in a plan view is connected to each other, and on one side of the conductor 5, it is in contact with the ground connection fitting 16 in the terminal block 10. The base of the earth metal fitting contact 6 formed in a U-shape when viewed from the side Parts is obtained by a structure in which the are to be connected.

  Further, as shown in FIGS. 7, 10, and 11, the cover body C is provided with hanging fitting projections 8 and 8 for hanging from the front wall 7 a and the rear wall 7 b to the terminal block 10, and An insulating partition wall 9 is formed so as to be positioned between the detectors 1.

  FIGS. 12 to 18 are views for explaining a state in which the energization confirmation tool shown in the first embodiment is mounted on the terminal block. FIG. 12 is a plan view thereof, FIG. 13 is a left side view, FIG. 14 is a right side view, FIG. 15 is a front view, FIG. 16 is a rear view upside down, FIG. 17 is a sectional view taken along line DD in FIG. 12, and FIG. 18 is a sectional view taken along line EE in FIG. is there.

  As shown in FIG. 12, the energization confirmation tool shown in the first embodiment is placed on the terminal block 10 with the side wall 7c on the right side, and is sandwiched between the terminal blocks 10 by the fitting projections 8 and 8 for attachment and detachment. Fix it. By this mounting operation on the terminal block 10, as shown in FIG. 15, each conductive contact 2 is brought into contact with the corresponding input terminal 12, and at the same time, the earth fitting 6 is positioned below the earth connecting fitting 16. Contact with. By doing so, as shown in FIGS. 18 and 17, three sets of the conductive contact 2, the energization indicator lamp 3, and the resistance element 4 are connected to the grounding metal contact 6 and the ground connection via the conductor 5. The metal fitting 16 and the mounting base of the terminal block 10 are electrically connected.

  If electricity is applied to the input terminal 12 at the time of confirmation, a series of electric circuits are formed through the ground connection fitting 16, and the energization indicator lamp 3 is turned on. If no electricity is applied to the input terminal 12, an electric circuit will not be formed, and the energization indicator lamp 3 will not be lit. In this way, for each of the plurality of input terminals 12, it is possible to instantly check whether electricity is in an ON state or an OFF state.

  FIG. 19 is a layout diagram of the inner surface side of the cover body showing the second embodiment of the energization confirmation tool of the present invention. 20 to 24 are views showing a state in which the energization confirmation tool of the second embodiment is mounted on the terminal block. 20 is a plan view, FIG. 21 is a right side view, FIG. 22 is a front view, FIG. 23 is a cross-sectional view taken along line FF in FIG. 20, and FIG.

  Thus, the main difference between the energization confirmation tool of the embodiment and the energization confirmation tool of the first embodiment is that the energization display lamp 3 is directly displayed by projecting from the upper surface of the cover body C. It is. That is, in the energization confirmation tool of the second embodiment, the neon lamp 3 as an energization display lamp is arranged in a standing posture, and its tip is arranged so as to protrude from the upper surface of the cover body C. It can be confirmed directly from the top surface. Other points are the same as those in the first embodiment. In the energization confirmation tool shown in the second embodiment, there is an advantage that the cover body C can be formed of an opaque body.

  Since the energization confirmation tool according to the present invention can be used to instantly confirm the energization of a plurality of electrodes at once, targeting the terminal block in which a plurality of terminals conventionally used in this manner are arranged in parallel. Moreover, since it can be done safely, it will be welcomed and greatly spread in the market.

The top view of a terminal block. The front view of a terminal block. FIG. 2 is an end view taken along line AA in FIG. 1. The right view in FIG. The top view which shows 1st Example. The top view of the inner surface side which reversed FIG. 5 in the left-right direction. The left view which shows 1st Example. The right view which shows 1st Example. The front view which shows 1st Example. BB sectional drawing in FIG. CC sectional view taken on the line in FIG. The top view which shows the state which mounted | wore the terminal block with the electricity supply confirmation tool shown in 1st Example. The left side view. The right side view. The front view. The rear view which showed the same upside down. The DD sectional view taken on the line in FIG. The EE sectional view taken on the line in FIG. The inner surface side arrangement drawing of the cover body in 2nd Example. The top view which shows the state which mounted | wore the terminal block with the electricity supply confirmation tool shown in 2nd Example. The right side view. The front view. FF sectional view taken on the line in FIG. GG sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Detection body 10 Terminal block 11 Unit 12 Input terminal 13 Output terminal 14 Mounting part 16 Ground connection metal fitting 2 Conductive contactor 3 Current supply lamp 4 Resistance element 5 Conductor 6 Ground metal fitting contactor 7 Edge part 8 Fitting part C Cover body

Claims (3)

A plurality of units (11) having an input terminal (12) for connecting an input cable and an output terminal (13) for connecting an output cable electrically connected to the input terminal (12) are arranged in parallel. The mounting portion (14) formed on the outer side of the terminal block (10) is an energization state confirmation tool that is structured to be fixed by a ground connection fitting (16),
A plurality of parallel arrangements of detectors (1) comprising conductive contacts (2) in contact with the input terminals (12) or output terminals (13), energization indicator lamps (3) and resistance elements (4), and A cover body comprising a conductor (5) connected to each resistance element (4), and a ground metal contact (6) connected to the conductor (5) and contacting the ground connection metal fitting (16) ( C) A terminal block energization confirmation tool formed of an insulator.   The terminal block energization confirmation tool according to claim 1, wherein the cover body (C) is formed of a transparent material that can be seen through.   The cover body (C) has a fitting projection (8, 8) for detaching from the front wall (7a) and the rear wall (7b) to the terminal block (10) suspended from the front wall (7a). Terminal block power check tool.

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