JP4800398B2 - Terminal block test wiring jig - Google Patents

Description

  The present invention relates to a terminal block used for a terminal block such as a screw-up type terminal block as a wiring relay and branching device used in a switchboard, a control panel, a monitoring panel and the like of a nuclear power plant, a thermal power plant and a substation, for example. This relates to a test wiring jig.

  This type of conventional terminal block is used as an instrument for relay connection of the power supply voltage applied from the power supply device and the wiring on the side receiving the power supply voltage to various devices such as relays, sequencers and motors, and lamps. Yes. There is a screw-up type terminal block as such a conventional terminal block.

  In this screw-up type terminal block, in a state where the screw is rotated and removed from the screw hole of the conductor terminal, the screw is separated upward with the washer in a direction perpendicular to the conductor terminal surface (up movement by the spring), and the conductor terminal surface Insert the crimp terminal at the tip of the wire between the screw hole and the lower end of the spaced screw and push down the screw head with the tip of the screwdriver to tighten the screw. Easy, quick and safe without dropping screws.

  At the time of shipment of this type of switchboard, control panel and monitoring panel, the power supply unit is connected to the terminal block at the time of on-site installation. The side that receives electricity in the device is wired to the terminal of the terminal block. In this state, it is necessary to conduct a shipping test of the switchboard, control panel, and monitoring panel.

  When performing such a shipping test, the test power supply device is connected to the terminal of the terminal block on the electricity sending side by screw fastening via a crimp terminal, and the relay, sequencer and motor on the side receiving electricity, Applies a test power supply voltage to various devices such as lamps, confirms whether relays, sequencers and motors, and various devices such as lamps operate normally, and outputs voltage values and output current values. Conduct a shipping test such as checking After the shipping test, the wiring connected to the test power supply device by screw fastening to the terminal of the terminal block on the electricity sending side is loosened and removed.

  In this way, at the time of the shipping test, the test power supply device is connected to the terminal of the terminal block on the electricity sending side by screw fastening via the crimp terminal, or the screw is loosened after the shipping test to remove this wiring. Although it is necessary, man-hours are required to tighten and loosen the screws, and there is a problem that the manufacturing cost is high.

  In order to solve this, Patent Document 1 proposes a test wiring jig. In the test wiring jig of Patent Document 1, a magnet is provided at the tip of the test wiring connected to the test power supply device, and this magnet is connected and fixed to the terminal screw of the terminal block on the electricity sending side by magnetic force. This is a test wiring jig. As a result, the number of wiring man-hours due to screws can be significantly reduced during the shipping test and after the shipping test.

  When Patent Document 1 is described with reference to FIG. 11, as shown in FIG. 11, the test wiring jig includes contact surfaces SA and contact surfaces SB of the permanent magnets 101a and 101b at the tip portions of the terminal contact elements 100a and 100b. As a result, the terminal board is connected and fixed by magnetic force to the contact surface SC of the head 102 of the fastening screw of the terminal board. In this case, the contact surface SA and the contact surface SB of the permanent magnets 101a and 101b are independently provided in all directions of XYZ in order to obtain good contact along the contact surface SC of the head 102 of the fastening screw. Displaceable.

  Patent Document 2 proposes a test jig that uses a metal plate such as a short bar that can be collectively wired to a plurality of terminals of a terminal block to rationalize wiring connection by screws.

  In the test jig of Patent Document 2, as shown in FIG. 12, when a voltage is applied to a plurality of circuits in a withstand voltage test or the like, a plurality of continuous comb-shaped elastic contact pieces 201 are respectively From the side of the terminal block 202, it is made to enter above each connection terminal 203, and its lower end is brought into contact with the head of the fastening screw 204. Then, in this state, the elastic locking portion 205 is moved to the terminal block 202. Are engaged with the cover-engaging recess 206 on the corresponding side.

  As indicated by an arrow A, the elastic locking portion 205 is rotated downward about the vicinity of the elastic locking portion 205 to lock the other side elastic locking piece 207 to the cover locking recess 206 on the other side. In this way, the mounting operation of the withstand voltage test short-circuit plate 200 is completed extremely easily and speedily.

  In such a state that the withstand voltage test short-circuit plate 200 is attached to the cover locking recess 206, each of the plurality of elastic contact pieces 201 maintains positive contact with the fastening screw 204 of the connection terminal 203 due to its elasticity. As a result, a short circuit between all the connection terminals 203 can be reliably realized. Also, the elastic locking portions 205 and the elastic locking pieces 207 on both sides similarly hold a positive locking state with respect to the cover locking recesses 206 on both side portions of each partition wall due to their elasticity. In addition, the contact of the elastic contact piece 201 with the fastening screw 204 of the connection terminal 203 can be reliably maintained.

  On the other hand, the withstand voltage test power supply is connected to the main body of the withstand voltage test short-circuit plate 200 by connecting to any one of the terminal pieces 208 projecting on the side thereof with, for example, a connector that covers the exterior. Easy and reliable electrical connection.

  Further, Patent Documents 3 and 4 propose a test wiring jig that uses a contact probe to rationalize wiring connection using screws.

  In Patent Document 3, as shown in FIG. 13, the terminal fittings 301 at both ends of the input / output terminal block 300 are loosened, and the remaining intermediate terminal fittings 301 are firmly screwed into the pedestal 302. Next, the wiring connection tool 303 facing this is moved so that the V-shaped notch at the tip of the contact fitting 304 as a contact probe approaches the terminal fitting 301 side of the input / output terminal block 300, and the contact The metal fitting 304 is clamped by the terminal metal fittings 301 at both ends and screwed.

  At this time, the V-shaped tips of the contact fittings 304 at both ends are sandwiched between the head of the terminal fitting 301 and the pedestal 302, and the contact fitting 304 is screwed by tightening the terminal fitting 301. The connection tool base 305 and the input / output terminal block 300 are mechanically fixed and electrically connected. In the remaining intermediate contactor 304, since the opposing terminal fitting 301 is screwed into the pedestal 302, the head of the terminal fitting 301 enters the inside of the V-shaped cutout of the contactor 304 and contacts by contact. To do. At this time, the spring 306 starts compression from the moment when the V-shaped cut portion of the contact fitting 304 comes into contact with the head of the terminal fitting 301, and the extension fitting force causes the contact fitting 304 to have the necessary contact pressure. It is pressed against the head of the terminal fitting 301 and brought into electrical contact with it.

  Therefore, the wiring connection to the input / output terminal block 300 is only a screwing operation of the two terminal fittings 301 at both ends, and the connection of the remaining contactor fitting 304 in the middle portion is brought into contact by abutting by the extension force of the spring 306. The connection work time is greatly shortened, and the connection work is simplified, so that the wiring efficiency can be greatly improved.

  Further, a V-shaped cut portion is formed at the tip of the contact fitting 304, and the inside of the V-shaped cut portion and the head of the terminal fitting 301 are brought into contact with each other. Therefore, it is not necessary to remove the terminal fitting 301 from the pedestal 302, and it is only necessary to loosen the terminal fitting 301 at both ends and tighten the tip of the contact fitting 304, so that the working efficiency can be greatly improved.

  In Patent Document 4, as shown in FIG. 14, an external input / output terminal connection jig 400 is used to connect an external input / output terminal of a panel and a contact probe 401 for input / output of a test signal during a performance test of the control panel. In addition, the cover 402 covering the entire surface of the terminal block can be attached and removed with a single touch, and a hole 403 through which the contact probe 401 is inserted and penetrated is formed in the cover 402 so as to face the terminal, and the cover 402 is fixed to the jig base 404. The probe 401 is mounted on the jig base 404 so that the connection between the screw head of the external input / output terminal and the probe 401 is maintained, and the cover 402 and the jig base 404 are made of a transparent acrylic block. When the probe 401 is pressed against the screw head of the external input / output terminal, the probe 401 is used as a retraction hole. It can be avoided.

  Patent Document 5 proposes a terminal block in which an attachment can be attached and detached using a dedicated structure for the terminal block, and a test wiring jig used therefor.

  In the test wiring jig of Patent Document 5, as shown in the perspective view of FIG. 15, a crimp terminal at the tip of the electric wire 503 is sandwiched between the terminal plate 501 and the washer 502 urged by a coil spring. In a screw-up type terminal block 500 for fastening a terminal screw 504 screwed to 502, a connector type test attachment 506 is inserted from above the screw-up type terminal block 500, and the withstand voltage is applied to the test attachment 506. The test short-circuit adapter 507 and the sequence test adapter 508 are connected independently or individually.

  The test attachment 506 includes a tab terminal 509 in which a plurality of connections to a withstand voltage test short-circuiting adapter 507 and a sequence test adapter 508 are branched from one terminal connection to a screw-up terminal block 500. Yes. In addition, a one-terminal connection adapter 510 is also provided that enables connection of a plurality of screw-up type terminal blocks 500 each having either a short-circuit adder 507 for withstanding voltage test or a sequence test adapter 508 connected thereto. ing.

  Further, a strip-shaped dial plate 511 indicating a terminal name is used for the screw-up type terminal block 500. When the test attachment 506 is inserted into the screw-up type terminal block 500 and connected, Then, the dial plate 511 is removed so that the dial plate 511 can be attached to the test attachment 506. The safety cover 512 covers the screw-up type terminal block 500 and is used for safety.

  Further, Patent Document 6 proposes a terminal block in which a test terminal is fastened to a conductive plate.

  In Patent Document 6, as shown in FIGS. 16 (a) and 16 (b), a test terminal 602 is assembled on the center portion of the stopper plate 601 using the stopper plate 601 of the terminal block 600. It is a terminal block with a test terminal, and the test terminal 602 can simplify the preparation for an energization test. By inserting a test wire with a banana plug (not shown) into the hole of the test terminal 602, the test terminal 602 can be efficiently used. Work can be done. As described above, the test terminal 601 is used in order to omit the work of removing and attaching the tightening screw 603 when conducting the energization test.

JP 2007-73477 A JP 2004-273189 A JP 2004-247114 A JP 2002-71711 A JP-A-6-283224 (Patent No. 2912256) Japanese Utility Model Publication No. 5-15338

  In the conventional connection configuration using the magnet of the test wiring of Patent Document 1 described above, when the screw material is iron, there is no problem in connecting the test wiring and the screw, but the screw material is a non-magnetic material such as stainless steel or brass. In this case, the test wiring cannot be connected to the screw by a magnet. In addition, when the screw material is iron, even if the test wiring is connected to the screw with a magnet, if the current flows through the magnet to the device under test, the current is limited because the magnet has high resistance. As a result, the rated current of the terminal block may be greatly reduced. For example, when the rated current of the terminal block is 30 A, the jig energizing current may be 1 A or less. In this case, there arises a problem that accurate operation tests and performance tests cannot be performed.

  In the conventional test jig using the short bar of the above-mentioned Patent Document 2, a metal plate such as a short bar is certainly used for a withstand voltage test in which a power supply voltage is applied to each device via a plurality of terminals on the terminal block. Can be used to streamline the wiring connection with screws, but when applying the power supply voltage to each device via multiple terminals of the terminal block, the short bar for batch connection is Since it cannot be used and wiring connection using screws is not eliminated, it does not eliminate the problem that a great number of man-hours are required for wiring connection using screws and the manufacturing cost is high.

  In the conventional test jigs using the contact probes of Patent Documents 3 and 4, the price of the contact probe itself is expensive, and the contact resistance of the contact probe itself is low. When a current is passed through the contact probe, the current flowing through the contact probe is so small that the current is greatly limited, and the rated current of the terminal block may be greatly reduced. For example, when the rated current of the terminal block is 30 A, the jig energizing current may be 1 A or less. In this case, there arises a problem that accurate operation tests and performance tests cannot be performed.

  In the terminal block using the attachment of Patent Document 5 and the test jig used therefor, a plurality of attachments are used, so that the price is high, and the contact portion between the terminal block and the contact portion between the terminal and the attachment The structure has two contact portions, and the possibility that the contact portions break down is synergistically increased.

  In the conventional structure using the test conductive screw disclosed in Patent Document 6, the test terminal 602 itself is attached to the stopper plate 601 of the terminal block 600 by fastening and detaching with a screw. There was a problem that the time was not shortened.

  The present invention solves the above-mentioned conventional problems, and eliminates the fastening and removal work with screws and only the installation work with one touch, thereby improving the efficiency of the test wiring work. It aims at providing the wiring jig for a test.

  The wiring jig for testing the terminal block of the present invention is a screw-up type terminal block having a screw-up function, and is provided between a lower end portion of the screw that has been raised and a conductive terminal having a screw hole in which the screw can be fastened. And having a conductive contact which is inserted in the spring and is in electrical contact with the conductive terminal and connected to the external wiring, thereby achieving the above object.

  Preferably, the conductive contacts in the test wiring jig for the terminal block of the present invention are integrated via a side surface portion between the front side and the front end side, and springs are formed on the upper front end side and the lower front end side. It has a strip-shaped upper contact and lower contact that are separated from each other.

  Further preferably, in the test wiring jig for a terminal block according to the present invention, a resin case that covers the base portion and the near side of the upper contact and the lower contact, and the resin case, It further has a connecting portion that is provided on the front side of each of the upper contact and the lower contact and that can be electrically connected to the external wiring.

  Further preferably, the resin case in the wiring jig for testing a terminal block according to the present invention covers the base portion integrated with the upper contact and the lower contact and the front side by sandwiching them from both sides and covering them. .

  Furthermore, it is preferable to further include a fixed shaft for fixing one unit or a plurality of units that tie two resin cases in the test wiring jig for the terminal block of the present invention.

  Furthermore, preferably, the upper contact in the test wiring jig of the terminal block of the present invention protrudes longer than the lower contact, and the tip of the upper contact is the lower end of the up screw It is bent down to make it easier to insert underneath.

  Further, preferably, a circular protrusion for retaining that can be fitted into the screw hole of the conductive terminal is formed on the lower surface of the lower contact in the test wiring jig of the terminal block of the present invention.

  Further preferably, the resin case in the test wiring jig for the terminal block according to the present invention is provided with a protruding piece portion as a mounting holding mechanism for holding the jig mounting state by sandwiching the lower end portion of the raised screw from both sides. ing.

  Further preferably, in the test wiring jig for a terminal block according to the present invention, the connection portion on the near side of the upper contact and the lower contact is a faston tab or a solder terminal to which the receptacle is detachable.

  Further preferably, two connection portions in the test wiring jig for the terminal block of the present invention are provided in one unit.

  Further preferably, the screw-up type terminal block using the terminal block test wiring jig of the present invention is a washer having a washer that is guided by the insulating unit so as to be movable in the vertical direction with respect to the surface of the conductive terminal. And a spring member that applies a biasing force to the screw with the washer in a direction in which a lower end portion of the screw with the washer is separated from the screw hole of the conductive terminal, and has the above-described screw-up function. It is

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

  In the present invention, a spring is inserted between the lower end of the screw that has been raised and the conductive terminal to which the screw can be fastened, and is in electrical contact with the conductive terminal and connected to the external wiring. A conductive contact.

  Thus, the conductive contact can be attached and detached with one touch by inserting the conductive contact between the lower end of the screw that has been raised and the upper surface of the conductor terminal. Therefore, the conductive contact of the test wiring jig can be secured to the input side of the conductive terminal easily and quickly with a single touch without the need to tighten the screws when mounting the test wiring jig to the screw-up type terminal block. It becomes possible to attach to. Therefore, the efficiency of the test wiring work can be greatly improved by eliminating the fastening and removing work with screws and performing only the mounting work with one touch.

  As described above, according to the present invention, since the conductive contact is inserted between the lower end of the raised screw and the upper surface of the conductor terminal by using its spring property, the screw can be attached and detached with one touch. It is possible to eliminate the fastening and detaching work by the step and to perform only the one-touch mounting work, and the efficiency of the test wiring work can be greatly improved.

It is a figure which shows the principal part structural example of the wiring jig for a test of the terminal block in Embodiment 1 of this invention, Comprising: (a) is a top view of the wiring jig for a test, (b) is for the test It is a side view of a wiring jig, (c) is a front view of the wiring jig for a test. It is a longitudinal cross-sectional view of the test wiring jig of FIG. It is a principal part block diagram which shows the state tested using the wiring jig for a test of FIG. 2 for a screw up type terminal block. It is a top view which shows the state before mounting | wearing the terminal wiring board for a test of FIG. It is a top view which shows the state after mounting | wearing the terminal block with the test wiring jig of FIG. It is a figure which shows the principal part structural example of the wiring jig for a terminal block test in Embodiment 2 of this invention, (a) is a top view of the wiring jig for a test, (b) is for the test It is a side view of a wiring jig, (c) is a front view of the wiring jig for a test. It is a longitudinal cross-sectional view of the test wiring jig of FIG. It is a principal part block diagram which shows the state tested using the test wiring jig of FIG. 6 for a screw-up type terminal block. It is an enlarged top view of the front end side of the upper contact in FIG. FIG. 7 is an enlarged bottom view of the tip side of the lower contact in FIG. 6. It is an expanded sectional view showing an example of important section composition of a conventional terminal block test wiring jig indicated by patent documents 1. It is a longitudinal cross-sectional view which shows the principal part structural example at the time of attaching the conventional test wiring jig currently disclosed by patent document 2 to the terminal block. It is a top view which shows the principal part structural example at the time of attaching the conventional test wiring jig currently disclosed by patent document 3 to a terminal block. It is a perspective view which shows the structural example of the wiring jig for a test of the conventional terminal block currently disclosed by patent document 4. FIG. It is a perspective view which shows the structural example of the wiring jig for a test of the conventional terminal block currently disclosed by patent document 5. FIG. (A) is a front view which shows the structural example of the test wiring jig of the conventional terminal block currently disclosed by patent document 6, (b) is the structural example of the wiring jig for the test of the terminal block. FIG.

  Embodiments 1 and 2 of a terminal block test wiring jig according to an embodiment of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a configuration example of a main part of a test jig for a terminal block according to Embodiment 1 of the present invention, wherein (a) is a top view of the test jig. Is a side view of the test wiring jig, and (c) is a front view of the test wiring jig.

  1 (a) to 1 (c), the test wiring jig 1 for the terminal block according to the first embodiment is integrated via the side surface between the front side and the front end sides 21 and 31, and the upper front end side. The upper contact 2 and the lower contact 3 as band-plate-like conductive contacts separated from each other by the spring 21 at the lower end side 31 and the upper contact 2 and the upper contact 2 and the lower contact 3, two resin cases 4 and 4 that sandwich and cover the integrated base portion side from both sides, a fastening shaft 5 as a fixed shaft that penetrates and fixes the side surfaces of the two resin cases 4 and 4, and a resin case 4 and a wiring member 6 connected to a power supply device, which is electrically connected to either the upper contact 2 or the lower contact 3 in front of the power supply device 4.

  The upper contact 2 and the lower contact 3 are made of metal and are formed in a plate shape that is long in the front-rear direction. As shown in the longitudinal sectional view of FIG. 2, the upper and lower upper contacts 2 and the lower contact 3 are formed. Are folded and integrated by connecting portions 23 connected to the respective side surfaces between the front sides 22 and 32 and the front end sides 21 and 31, respectively. The front end sides 21 and 31 have a predetermined interval between the upper side and the lower side. In a state where the dimension is in accordance with the distance between the lower end portion of the screw and the upper surface of the conductive terminal and the front end side 31 obtains a predetermined contact pressure with respect to the upper surface of the conductive terminal and is separated, The upper and lower upper contactors 2 and the lower contactors 3 have distal ends 21 and 31 having spring properties so that they can approach or separate. The two spring metal plates (the upper contact 2 and the lower contact 3) need to be able to be inserted at the tip portion for mounting on the terminal block, and have a certain degree of contact reliability. .

  The two resin cases 4 and 4 are formed in a box shape that is embraced with each other and opened on the front side. As shown in the longitudinal sectional view of FIG. Two upper and lower cutout portions (here, one cutout portion in a lump) are formed, and the upper contact 2 and the lower contact 3 are inserted into the upper and lower two cutout portions from both sides. Combined to form a box shape. The two resin cases 4 and 4 cover and accommodate the front sides 22 and 32 of the upper contact 2 and the lower contact 3 and the connecting portion 23 between the front sides 22 and 32 and the front ends 21 and 31. The upper contact 2 and the lower contact 3 are held by ribs (not shown) standing from both side surfaces. The front sides 22 and 32 of the upper contact 2 and the lower contact 3 are bent so as to have a predetermined distance (insulating distance) from each other, and before the bent upper contact 2 and lower contact 3. Between the sides 22 and 32, a hole 42 is formed through which the fastening shaft 5 for fixing the state in which the two resin cases 4 and 4 are held together is penetrated. The hole 42 is formed in an annular shape (not shown) from the periphery of the hole 42 in order to insulate the metal fastening shaft 5 from the front sides 22 and 32 of the upper contact 2 and the lower contact 3. ) Is erected.

  The fastening shaft 5 includes a screw portion and a nut portion, and is used to fix the two resin cases 4 and 4 in a state where they are embraced with each other. The fastening shaft 5 can also be used to integrate one or a plurality of test wiring jigs 1 as necessary.

  The wiring member 6 has an output end of a test power supply connected to one end thereof, and a solder terminal as a connecting portion on the near side 22 or 32 of the upper contact 2 and the lower contact 3 on the other end. Connected with solder. For example, when the wiring member 6 is connected to the front side 22 of the upper contact 2 by soldering, another wiring member 6 can be connected to the front side 32 of the remaining lower contact 3. For example, this another wiring member 6 can also be used for a connecting wire with an adjacent terminal that short-circuits adjacent terminals of the terminal block.

  Here, the case where it tests using the wiring jig 1 for a test of this Embodiment 1 for a screw-up-type terminal block is demonstrated in detail using FIGS.

  FIG. 3 is a principal configuration diagram showing a state in which the test wiring jig 1 of FIG. 2 is tested using a screw-up type terminal block.

  In FIG. 3, the screw-up type terminal block 10 supplies the power supply voltage to the input side 11a of the conductor terminal 11 to which the power supply voltage is applied from the power supply device, and various devices under test such as relays, sequencers and motors, and lamps. And an output side 11b of the conductor terminal 11 to be received. The upper contact 2 and the lower contact 3 of the test wiring jig 1 to which the power supply device and various measuring devices are connected are connected to the input side 11a of the conductor terminal 11 by one touch, and the output side of the conductor terminal 11 Various devices for testing such as relays, sequencers and motors, and lamps are connected to 11b.

  In the screw-up type terminal block 10, the screw 12 is separated upward together with a washer 13 in a direction perpendicular to the upper surface of the conductor terminal 11 in a state where the screw is rotated and removed from the screw hole of the conductor terminal 11 (up movement by the spring 14). And the upper contact 2 and the lower contact 3 of the test wiring jig 1 between the screw hole on the upper surface of the conductor terminal 11 and the lower end 12a of the screw 12 spaced apart from each other with its spring property. The upper contact 2 and the lower end 12a of the screw 12 can be brought into contact with each other, and the lower contact 3 and the upper surface of the terminal 11 can be brought into contact with each other. As described above, the upper contact 2 and the lower contact 3 which are two spring metal plates between the tip end (lower end 12a) of the screw 12 which has been raised and the upper surface of the conductor terminal 11 are made springy. By using and inserting, it can be attached and detached with one touch. Therefore, the upper contact 2 and the lower contact of the test wiring jig 1 can be easily and quickly performed with one touch without performing the fastening operation of the screws 12 for mounting the test wiring jig 1 to the screw-up type terminal block 10. The child 3 can be securely attached to the input side 11 a of the conductive terminal 11. As a result, it is possible to eliminate the fastening and detaching work by the screw 12 and perform only the one-touch mounting work, and the efficiency of the test wiring work can be greatly improved.

  In the first embodiment, the screw-up terminal block 10 is a single-stage type in which the screw 12 is held. However, the present invention is not limited to this, and the test-up wiring is not limited to this. There is no change in mounting the upper contact 2 and the lower contact 3 of the jig 1 on the input side 11 a of the conductive terminal 11.

  In the first embodiment, the case where the test wiring jig 1 is one unit as the test plug has been described. However, the present invention is not limited to this, and the test wiring jig 1A includes a plurality of units as the test wiring jig 1A as shown in FIGS. It may be comprised. 4 and 5 show a case where the screw-up terminal block 10 has 10 units and the test wiring jig 1A has 10 units. As the test wiring jig 1 </ b> A, ten single unit test wiring jigs 1 may be connected by the fastening shaft 5. The 10 unit test wiring jig 1A shown in FIG. 4 has its spring property with one touch of the upper contact 2 and the lower contact 3 on each conductive terminal 11 of the screw-up terminal block 10 as shown in FIG. It is possible to install it more quickly and reliably by inserting it using.

(Embodiment 2)
In the first embodiment, the case where the test wiring jig 1 is not provided with the mounting holding mechanism and the wiring member is connected to the test wiring jig 1 by soldering has been described. A case where a mounting holding mechanism (a structure that cannot be easily detached) is provided in the wiring jig and the wiring member is configured to be detachable will be described.

  FIG. 6 is a diagram illustrating an exemplary configuration of a main part of a test jig for a terminal block according to Embodiment 2 of the present invention, wherein (a) is a top view of the test jig. Is a side view of the test wiring jig, and (c) is a front view of the test wiring jig.

  6 (a) to 6 (c), the test wiring jig 1B for the terminal block of the second embodiment is connected and integrated at the side surface portion between the front side and the tip side 21 and 31, and the upper side is integrated. An upper contact 2B and a lower contact 3B in the form of strips as conductive contacts separated from each other by a spring property on the distal end side 21 and the lower distal end side 31, and the upper contact 2B and the lower side Two resin cases 4B and 4B and two resin cases 4B and 4B having projecting piece portions 43 for catching the screw with the terminal block raised, while covering and covering the integrated base portion side of the contact 3B from both sides. A fastening shaft 5 as a fixed shaft that penetrates and fixes the side surface of the first and second power contacts, and a power supply device that is electrically connected to either the upper contact 2B or the lower contact 3B in the resin case 4B. Wiring member 6.

  The upper contact 2B and the lower contact 3B are made of metal and formed in a plate shape, and as shown in the longitudinal sectional view of FIG. 7, the upper and lower two upper contacts 2B and the lower contact 3B are in front. It is bent and integrated by a connecting portion 23 connected to each side surface between the side 22 and 32 and the tip side 21 and 31, respectively, and a predetermined distance between the upper tip side 21 and the lower tip side 31 ( In the state where the dimension is in accordance with the distance between the lower end of the screw and the upper surface of the conductive terminal and separated from the upper surface of the conductive terminal with a distance that allows the tip 31 to obtain a predetermined contact pressure. The tip sides 21 and 31 of the two upper contacts 2B and the lower contact 3B have springiness so that they can approach or separate.

  Further, the upper contact 2B and the lower contact 3B, which are two spring metal plates, have a length at the tip, and the upper contact 2B protrudes longer than the lower contact 3B, The tip of the upper contact 2B is bent downward to make it easier to pick up the lower end of the screw on the terminal block. Further, in order to maintain the state in which the test wiring jig 1B is mounted on the terminal block on the lower surface of the lower contact 3B, it can be fitted into the screw holes of the terminals of the terminal block as shown in FIG. A circular protrusion 33 is formed for preventing loosening.

  As described above, the two spring metal plates (the upper contact 2B and the lower contact) are arranged so that the insertion between the front end portion (lower end portion 12a) of the screw 12 and the terminal plate (conductive terminal 11) is easier. The upper side (upper contact 2B) of the side contact 3B is directed downward. The lower spring metal plate (lower contact 3 </ b> B) is provided with a circular protrusion 33 protruding from the lower surface side so as to be fitted into the screw hole of the conductive terminal 11 to prevent the lower metal plate from coming off.

  The two resin cases 4B and 4B are formed in a box shape that is embraced with each other and opened on the front side, and as shown in the longitudinal sectional view of FIG. Two upper and lower cutout portions (here, one cutout portion in a lump) are formed, and the upper contact 2B and the lower contact 3B are fitted into the two upper and lower cutout portions and are entangled from both sides. Constructs a box shape. The two resin cases 4B and 4B accommodate the front sides 22 and 32 of the upper contact 2B and the lower contact 3B, and the connecting portions 23 between the front sides 22 and 32 and the front ends 21 and 31, respectively. It is held by a rib (not shown) standing from the surface. The near sides 22 and 32 of the upper contact 2B and the lower contact 3B are bent so as to have a predetermined insulation distance from the fastening shaft 5, and the bent upper contact 2B and lower Between the two faston ribs respectively formed on the front sides 22 and 32 of the contact 3B, the fastening shaft 5 as a fixed shaft for fixing the state where the two resin cases 4B and 4B are entangled with each other is passed through. A hole 42 is formed. This hole 42 is circular from the periphery of the hole 42 in order to provide insulation between the metal fastening shaft 5 and the two faston ribs on the front sides 22 and 32 of the upper contact 2B and the lower contact 3B. A rib (not shown) is erected in an annular shape.

  In addition, as a mounting and holding mechanism for the test wiring jig 1B, the two resin cases 4B and 4B sandwich the lower end portion of the screw with the terminal block up from the both sides on the outer side surface 41 on the terminal block side, A protrusion piece 43 that holds the mounting state of the test wiring jig 1B is provided together with a circular protrusion 33 for retaining the protrusion provided on the near side 32 of the lower contact 3B. As shown in FIG. 9, the protruding piece 43 protrudes from each outer side surface 41 of the two resin cases 4 </ b> B and 4 </ b> B, and the lower end portion 12 a of the screw 12 whose terminal block is up due to the spring property of the tip portion. It is inserted into the U-shaped notch 43b, and the lower end 12a of the screw 12 is sandwiched and held from both sides of the tip portion. In order to easily guide the lower end portion 12a of the screw 12 into the U-shaped cutout portion 43b of the protruding piece portion 43, C portions 43a are formed on both sides of the entrance portion of the U-shaped cutout portion 43b. Further, the protruding piece 43 also serves as a protective wall for preventing the distal end sides 21 and 31 of the upper contact 2 and the lower contact 3 below from being deformed.

  The fastening shaft 5 includes a screw portion and a nut portion, and is used to fix the two resin cases 4B and 4B in a state where they are embraced with each other. Further, the fastening shaft 5 can be used to integrate a plurality of test wiring jigs 1B as much as necessary.

  The wiring member 6 has one end connected to the output end of the test power supply, and the other end receptacle 61 is connected to the front contact 22 or 32 of the upper contact 2 and the lower contact 3. Each faston tab is removable. For example, when the receptacle 61 at the other end of the wiring member 6 is inserted into and electrically connected to the faston tab 22 on the near side 22 of the upper contact 2, the remaining faston tab 32 on the near side 32 of the lower contact 3. In addition, the receptacle 61 at the other end of another wiring member 6 can be connected. For example, the receptacle 61 at the other end of the other wiring member 6 can be used as a jumper for short-circuiting adjacent terminals of the terminal block.

  Here, the case where the test wiring jig 1B of Embodiment 1 is tested using a screw-up type terminal block will be described in detail with reference to FIG.

  FIG. 8 is a principal configuration diagram showing a state in which the test wiring jig 1B of FIG. 7 is tested using a screw-up type terminal block.

  In FIG. 8, the screw-up type terminal block 10 supplies the power supply voltage to the input side 11a of the conductive terminal 11 to which the power supply voltage is applied from the power supply device, and various devices under test such as relays, sequencers and motors, and lamps. And an output side 11b of the conductor terminal 11 to be received. The upper contact 2B and the lower contact 3B of the test wiring jig 1 to which a power supply device and various measuring devices are connected are connected to the input side 11a of the conductive terminal 11 by one touch, and the output side of the conductive terminal 11 Various devices for testing such as a relay, a sequencer, a motor, and a lamp are connected to 11 b by fastening screws 12.

  In the screw-up type terminal block 10, the screw 12 is separated upward together with the washer 13 in the direction perpendicular to the upper surface of the conductive terminal 11 in a state where the screw is rotated and removed from the screw hole of the conductive terminal 11 (up-movement by the spring 14). The upper contact 2B and the lower contact 3B of the test wiring jig 1 are inserted between the screw hole on the upper surface of the conductive terminal 11 and the lower end portion 12a of the screw 12 that is spaced apart and up. Thus, the upper contact 2B and the lower end 12a of the screw 12 can be brought into contact with each other, and the lower contact 3B and the upper surface of the conductive terminal 11 can be brought into contact with each other. As described above, the upper contact 2 and the lower contact 3 which are two spring metal plates are placed between the distal end portion (lower end portion 12a) of the screw 12 which has been raised and the upper surface of the conductive terminal 11, and the spring property thereof. It can be easily attached and detached with a single touch by inserting it using. Therefore, the upper contact 2B and the lower contact of the test wiring jig 1 can be easily and quickly performed with one touch without performing the fastening operation of the screws 12 for mounting the test wiring jig 1 to the screw-up type terminal block 10. The child 3B can be securely attached to the input side 11a of the conductive terminal 11.

  As described above, according to the first and second embodiments, the upper contact 2B and the lower contact 3B are used between the lower end portion 12a of the screw 12 that has been raised and the upper surface of the conductor terminal 11 by utilizing the spring property thereof. Since it can be attached and detached by one-touch insertion, it is possible to eliminate the fastening and removal work with the screw 12 and to perform only the one-touch mounting work, and the efficiency of the test wiring work can be greatly improved.

  In the second embodiment, the case where the test wiring jig 1B is a single unit as a test plug has been described. However, the present invention is not limited to this, and the test wiring jig 1B may be configured by a plurality of units. A plurality of single unit test wiring jigs may be connected by the fastening shaft 5. A plurality of test wiring jigs can be quickly mounted by inserting the upper contact 2B and the lower contact 3B into each terminal 11 of the screw-up terminal block 10 with one touch.

  In the first and second embodiments, the fastening shaft 5 is used to integrate one or a plurality of units. However, the present invention is not limited to this. You may comprise so that it may connect.

  As mentioned above, although this invention has been illustrated using preferable Embodiment 1-3 of this invention, this invention should not be limited and limited to this Embodiment 1-3. 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 to 3 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 relates to a terminal block used for a terminal block such as a screw-up type terminal block as a wiring relay and branching device used in a switchboard, a control panel, a monitoring panel and the like of a nuclear power plant, a thermal power plant and a substation, for example. In the field of test wiring jigs, because it is detachable with one touch by inserting a conductive contact between its lower end of the screw and the upper surface of the conductor terminal using its spring property, It is possible to eliminate the fastening and removing work by screws and to perform only the mounting work by one touch, and the efficiency of the test wiring work can be greatly improved.

1, 1A, 1B Terminal block test wiring jig 2, 2B Upper contact 21 Upper tip 22 Upper front (solder terminal or faston tab)
23 Connecting section 3, 3B Lower contact 31 Lower tip 32 Lower front (solder terminal or faston tab)
33 Circular protrusion 4, 4B Resin case 41 Outer side surface 42 Hole 43 Projection piece 43a C part 43b U-shaped notch part 5 Fastening shaft 6 Wiring member 61 Receptacle (inserted terminal)
DESCRIPTION OF SYMBOLS 10 Screw up type terminal block 11 Conductive terminal 11a Input side 11b Output side 12 Screw 12a Screw lower end part 13 Washer 14 Spring (spring member)

Claims (11)

  In a screw-up type terminal block having a screw-up function, a spring-like terminal block is inserted between the lower end portion of the screw that has been raised and a conductive terminal having a screw hole in which the screw can be fastened. A wiring jig for testing a terminal block having a conductive contact that is in electrical contact with a terminal and connected to an external wiring.   The conductive contactors are integrated via a side surface between the front side and the front end side, and have a strip-like upper side contact member and a lower plate side having a spring property separated from the upper front end side and the lower front end side. The terminal block test wiring jig according to claim 1, further comprising a side contact.   A resin case that covers the base and the near side of the upper contact and the lower contact; and a front side of the upper contact and the lower contact in the resin case; The terminal block test wiring jig according to claim 2, further comprising a connection portion that can be electrically connected to the external wiring.   4. The terminal block test wiring jig according to claim 3, wherein the resin case sandwiches and covers the integrated base portion of the upper contact and the lower contact and the near side from both sides. 5.   The terminal block test wiring jig according to claim 4, further comprising a fixed shaft that fixes one unit or a plurality of units each including two of the resin cases.   The upper contact protrudes longer than the lower contact, and the tip of the upper contact is bent downward to facilitate insertion under the lower end of the up screw. Item 3. A wiring jig for testing a terminal block according to Item 2.   3. The terminal block test wiring jig according to claim 2, wherein a circular protrusion for retaining is formed on the lower surface of the lower contact so as to be fitted in a screw hole of the conductive terminal.   The terminal case test wiring jig according to claim 3, wherein the resin case is provided with a protruding piece portion as a mounting holding mechanism for holding the jig mounting state by sandwiching a lower end portion of the raised screw from both sides. .   The terminal block test wiring jig according to claim 3, wherein the connection portion on the near side of the upper contact and the lower contact is a faston tab or a solder terminal to which the receptacle is detachable.   The terminal block test wiring jig according to claim 3, wherein two connection portions are provided in one unit.   The screw-up type terminal block includes a screw with a washer having a washer guided by an insulating unit so as to be movable in a direction perpendicular to the surface of the conductive terminal, and a lower end portion of the screw with the washer is connected to the conductive terminal. The terminal block test wiring jig according to claim 1, further comprising a spring member that applies a biasing force to the screw with the washer in a direction away from the screw hole.

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