JP2008300186A - Driver for banana terminal fixing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driver for a banana terminal fixing tool which can prevent contact (short circuit) of a minus driver with a proximity terminal by sliding laterally when the terminal fixing tool for banana terminal is installed on a terminal board in order to implement jumper lift at the terminal board of a control board. <P>SOLUTION: This is a driver 10 for the banana terminal fixing tool for screwing into a screw hole for contact of a terminal board a terminal fixing tool for banana terminal which has a body portion having respectively a recess to plug in a banana terminal and a pair of cut-out parts formed at the symmetrical positions of the aperture fringe of the recess, and a screw portion for fixing the other wiring terminals to the terminal board formed at the lower end part of the body portion. A projection part 13 of rectangular plate-shape which is inserted in the cut-out part 2c and screws the terminal fixing tool and an insertion guide part for sliding stop 14 which is installed at the center of a projection part so as to be inserted into the recess are provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention, for example, screw a terminal fixture for fixing a banana terminal in an electrically connected state to a terminal block disposed on a control panel installed in a nuclear power plant or a thermal power plant. It is related with the driver for a banana terminal fixture used at the time of wearing.

  Conventionally, when performing various tests and inspections using a terminal block in a control panel installed in a nuclear power plant or a thermal power plant, an operator or the like has a terminal block installed in the control panel. In general, various tests and inspections are performed by simulating a signal by performing a so-called jumper lift using an interlaced conductive line.

  For example, by performing so-called jumpers that involve the installation of cables and screws on terminal blocks for cables installed in control panels installed in nuclear power plants and thermal power plants, various tests and We carry out inspections.

  When performing a jumper lift in this test / inspection, a terminal fixture for a banana terminal is currently used to prevent erroneous contact (short circuit).

  In this terminal fixture, the upper center part of the fuselage is a recess for inserting a banana terminal for connecting a jumper wire, and a notch for inserting a flathead screwdriver at the left and right symmetrical positions on the opening edge of the recess The part is formed.

Thus, since the terminal fixture is a minus screw type, when lifting the cable, it is necessary to attach the terminal fixture to the terminal block using a minus driver.
nothing special

  However, in the past, in the case of a Phillips screw that is normally used in the terminal block in the control panel, the possibility of the Phillips screwdriver coming into contact with the proximity terminal when lifting the terminal is very low due to its shape. In such a case, when the terminal lift is attached to the terminal block by the minus driver, there is a risk that the minus driver slides sideways and contacts (short-circuits) with the adjacent terminal. In particular, when a banana terminal is loosened by applying force, such a risk due to skidding is likely to occur.

  Moreover, since the banana terminal is arrange | positioned adjacent to the terminal block in a control board in a line form, the above-mentioned danger is fully estimated.

  Therefore, the current banana terminal lift work is carried out with great care, but since the terminal lift work is frequently performed at regular inspections, etc., more reliable erroneous contact Although it is necessary to take measures to prevent (short circuit), the actual situation is that such measures are not yet taken.

  Therefore, the present invention was created in view of various circumstances existing in the past, and in order to implement a jumper on the terminal block in the control panel, when attaching the terminal fixture for the banana terminal to the terminal block, An object of the present invention is to provide a banana terminal fixture driver that can prevent a flat-blade screwdriver from skidding and contacting (short-circuiting) with a neighboring terminal.

  The present invention provides a body having a recess into which a banana terminal is inserted, a pair of cut portions formed at symmetrical positions of the opening edge of the recess, and another wiring terminal at the lower end of the body. A banana terminal fixing screwdriver for screwing a terminal fixing tool for a banana terminal formed into a screw part for fixing to a table into a screw hole for a contact of the terminal block, the tip of the screw shaft A rectangular plate-like projecting piece that is inserted into the cut portion to twist the terminal fixture, and an anti-slip insertion projecting from the center of the projecting piece to be inserted into the recess. By providing the guide portion, the above-described problems have been solved.

  In addition, the anti-slip insertion guide portion is formed in either a columnar shape or a cylindrical shape, thereby solving the above-described problem.

  Furthermore, the shaft part has solved the same problem as described above by covering the entire outer periphery with an insulating material.

  Further, the insulating material is a thin film of plastic or vinyl having an insulating property capable of being thermally contracted, thereby solving the above-described problem.

  According to the present invention, in order to perform a jumper on the terminal block in the control panel, when attaching the terminal fixture for the banana terminal to the terminal block, the flathead screwdriver slides and contacts (short-circuits) the adjacent terminal. It can be prevented in advance.

  In particular, in terminal blocks installed on control panels installed in nuclear power plants, thermal power plants, etc., both ends of the terminal block exist in a very narrow state. However, even in such a case, when installing the terminal fixture for the banana terminal, the non-slip insertion guide part is the terminal. Since it is inserted into the concave part of the body of the fixture, it is possible to prevent erroneous contact (short circuit) due to the side slip of the flat screwdriver during twisting.

  Moreover, since the insertion guide portion for preventing slip is formed in either a columnar shape or a cylindrical shape, the minus driver itself can be firmly held on the body of the terminal fixture.

  Furthermore, since the shaft part covers the entire outer periphery with an insulating material, even if the shaft part of a flathead screwdriver comes into contact with another terminal fixture for connecting banana terminals attached to the terminal block, the terminal The occurrence of a disaster in the facility can be prevented beforehand by preventing a short circuit between them.

  In addition, terminal blocks installed on control panels installed in nuclear power plants and thermal power plants, etc., have a very narrow spacing between the terminal blocks. There is a danger that the shaft of the flathead screwdriver will accidentally come into contact with other banana terminals during work.

  And even in such a severe situation, even if the screwdriver's shaft part accidentally contacts other banana terminals during work, short-circuiting between terminals etc. is prevented and the occurrence of disasters in the facility is obviated. In order to prevent this, the entire outer periphery of the shaft portion is covered with an insulating material.

  Also, since the insulating material is a heat-shrinkable insulating plastic or vinyl thin film, etc., it can be covered with the insulating material in close contact with the screwdriver's shaft, and if a long time has passed Even so, the insulating material does not fall off the shaft. In addition, it is possible to cover the shaft portion of the minus driver with an insulating material at a low cost.

  Moreover, since the banana terminal itself is made of SUS or the like, there has been a risk that the terminal fixture itself may fall into the control panel when the terminal is lifted even if a magnetic screwdriver is used. By using a dedicated flat-blade screwdriver, the terminal fixture can be prevented from dropping.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIGS. 4 to 6, the terminal fixture 1 for connecting the banana terminal V in the terminal block P is a fuselage having a recess 2a for inserting, for example, a SUS banana terminal V as an interlaced conduction line Q. 2 and a screw part 3 for fixing another wiring terminal 5 such as a ring shape to the terminal block P, which is an existing wiring component of the terminal block P, is attached to the lower end of the body 2 Forming.

  That is, as shown in FIG. 4, the body 2 constituting the terminal fixture 1 for connecting the banana terminal V is formed in a bottomed cylindrical shape having a recess 2 a into which the banana terminal V is inserted.

  Further, the entire outer periphery of the body 2 is covered with an insulating material 4 using, for example, a heat-shrinkable insulating plastic or vinyl thin film or the like by a technique such as shrink wrapping.

  And the screw part 3 is attached to the lower surface of the body 2 in a protruding state, and the screw part 3 is inserted into the ring-shaped other wiring terminal 5 and the contact screw of the terminal block P. It is assumed that it is fixed by screwing into the hole P2.

  As shown in FIG. 6, when the body 2 fixed to the terminal block P is inserted into the concave portion 2a of the banana terminal V, a partition plate or other wiring devices existing around the body 2 are provided. It has a height that does not get in the way. As shown in FIG. 4, a tapered portion 2 b that is inclined inward via an upper end surface portion 2 d is formed at the opening edge of the recess 2 a of the body 2.

  Further, a pair of cut portions 2c are provided at the opening edge of the concave portion 2a of the body 2 at the symmetrical position, so that a banana is attached to the terminal block P using a dedicated banana terminal fixture driver 10 described later. A terminal fixture 1 for connecting the terminal V and other ring-shaped wiring terminals 5 can be fixed.

  Thus, by providing the tapered edge 2b inclined inward and the pair of cut portions 2c at the opening edge of the recess 2a of the body 2, the banana terminal V can be easily inserted into the recess 2a of the body 2. I can do it.

  When the terminal fixture 1 for connecting the banana terminal V is attached to the terminal block P, the banana terminal fixture driver 10 according to the present invention is used as shown in FIG.

  That is, in this banana terminal fixture driver 10, as shown in FIG. 1 (b), a rectangular piece-like protruding piece portion 13 protrudes from the tip of a cylindrical rod-like shaft portion 12 protruding from one end of a handle 11. At the center of the projecting piece portion 13, a non-slip insertion guide portion 14 having a columnar shape or a cylindrical shape to be inserted into the concave portion 2 a of the body 2 is projected.

  The projecting piece 13 has a width that can be fitted into a pair of cut portions 2 c formed at the opening edge of the recess 2 a of the body 2.

  Further, the insertion guide portion 14 for preventing slipping is formed so that its outer diameter is substantially the same as or slightly smaller than the inner diameter of the recess 2a so that it can be smoothly inserted into the recess 2a of the body 2. ing.

  Further, the outer periphery of the shaft portion 12 constituting the banana terminal fixture driver 10 is covered with an insulating material 4.

  The insulating material 4 is, for example, a thin film such as plastic or vinyl having insulating properties that can be thermally contracted, and covers the outer periphery of the shaft portion 12 by a technique such as shrink wrapping.

  The insertion guide portion 14 for preventing slipping may be formed in a square shape or a spherical shape instead of a columnar shape or a cylindrical shape, and in any case, the terminal is fixed by the driver 10 for the banana terminal fixing tool. When the tool 1 is twisted, it is sufficient that the banana terminal fixture driver 10 itself is held by the terminal fixture 1.

  Next, an example of attachment of the terminal fixture 1 by using the banana terminal fixture driver 10 will be described.

  As shown in FIG. 2, another wiring terminal 5 is matched with the contact screw hole P2 of the terminal block P in advance, and the screw portion 3 of the body 2 of the terminal fixture 1 is connected to the contact screw hole of the terminal block P. Screw in P2 using banana terminal fixture screwdriver 10.

  At this time, as shown in FIG. 3, the anti-slip insertion guide portion 14 is first inserted into the recess 2 a of the body 2, and then the projecting piece 13 is formed at the opening edge of the recess 2 a of the body 2. The pair of cut portions 2c are fitted.

  Then, the banana terminal fixing screwdriver 10 is twisted through the handle 11 and the screw part 3 of the trunk 2 is screwed into the contact screw hole P2 of the terminal block P. 2, the banana terminal fixture driver 10 itself is stably held by the terminal fixture 1. Therefore, erroneous contact (short circuit) due to skidding of the banana terminal fixture driver 10 is prevented.

  Thus, the terminal fixture 1 is fixed to the terminal block P together with the other wiring terminals 5. Then, the insertion tip portion of the banana terminal V of the jumping conduction wire Q is inserted into the recess 2a of the body 2, and a test / inspection using a jumper is performed.

  At this time, the shaft portion 12 of the driver 10 for the banana terminal fixture is covered with the insulating material 4, and at the same time, the knob portion excluding the insertion tip portion of the banana terminal V of the jumping conducting wire Q and the lead wire R portion are made of vinyl or the like. Since the banana terminal V is inserted into the recess 2a of the body 2 of the specific terminal fixture 1, the body 2 of the other terminal fixture 1 and the jumping conduction line Q are connected to the terminal block P. Even if the shaft portion 12 of the banana terminal fixing tool driver 10 is accidentally contacted, conduction is prevented.

  The insulating material 4 is not limited to covering the shaft portion 12 by a shrink wrapping technique.

  For example, the shaft portion 12 may be wrapped with an insulating tape whose one side is a bonding surface, or the shaft portion 12 may be dipped in plastic to cover the insulating material 4. There is no problem.

  The banana terminal fixture driver according to the present invention is used for attaching a terminal fixture of a terminal block disposed in a control panel installed in a central control room of a nuclear power plant or a thermal power plant. In addition, it can be widely used for various terminal fixtures for fixing the banana terminal in an electrically connected state.

The structure of the driver for banana terminal fixtures which concerns on this invention is shown, (a) is a whole perspective view, (b) is an expansion perspective view of a front-end | tip part. It is a disassembled perspective view which shows the usage example of the driver for banana terminal fixtures. It is an expansion perspective view which shows the use condition of the driver for banana terminal fixtures. It is a disassembled perspective view which shows the state which coat | covers the whole outer periphery of the fuselage which comprises a terminal fixture with an insulating material. It is sectional drawing which shows the state which coat | covered the whole outer periphery of the fuselage which comprises a terminal fixture with an insulating material. It is a disassembled perspective view which shows the state which inserts the banana terminal of a jumping conducting wire in the both terminal fixtures attached to the terminal block.

Explanation of symbols

P ... Terminal block P2 ... Contact screw hole Q ... Interlaced conduction wire R ... Lead wire V ... Banana terminal 1 ... Terminal fixture 2 ... Body 2a ... Recess 2b ... Taper 2c ... Notch 2d ... Upper end surface 3 ... Screw Part 4 ... Insulating material 10 ... Driver for banana terminal fixture 11 ... Handle 12 ... Shaft part 13 ... Projection piece part 14 ... Insertion guide part for slip prevention

Claims (4)

  A body having a recess for inserting a banana terminal, a pair of cut portions formed at symmetrical positions of the opening edge of the recess, and another wiring terminal at the lower end of the body are fixed to the terminal block. A banana terminal fixture driver for screwing a terminal fixture for a banana terminal formed with a screw portion into a screw hole for a contact of a terminal block, wherein the notch is formed at the tip of the shaft portion of the driver A rectangular plate-like projecting piece that is inserted into the part to twist the terminal fixture, and an anti-slip insertion guide part that projects from the center of the projecting piece so as to be inserted into the recess. A driver for banana terminal fixtures.   The screwdriver for a banana terminal fixture according to claim 1, wherein the non-slip insertion guide portion is formed in a columnar shape or a cylindrical shape.   The driver for a banana terminal fixture according to claim 1 or 2, wherein the shaft portion is entirely covered with an insulating material.   4. The banana terminal fixture driver according to claim 3, wherein the insulating material is a heat-shrinkable insulating plastic or vinyl thin film.

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