JP2017083179A - Jig for pressure measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for pressure measurement with which it is possible to easily carry out a voltage check even in a state where a load-side terminal constituted with a quick connection terminal faces the side when seen from the front of a power distribution board and an insertion hole for inspection also faces the side.SOLUTION: A sensor projection 2 consists of two sensor pieces 42 orthogonal to the direction of insertion and separated in the crosswise direction, the two sensor pieces 42 being formed at tips of a frame metal 4 that is formed in shape of the letter U, and the two sensor pieces 42 while being separated by closing the frame metal 4 are closely adhered to each other, thereby forming one sensor projection 2. At the rear of the frame metal 4 is provided a probe insertion part 3 for connecting a probe 100 that is connected to a separately provided voltage measurement device, and two of the frame metals 4 are held and integrated into one by a holding member 5 constituted from an insulating member, making it possible to close the frame metal 4 via the holding member 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a voltage measurement jig used when checking a load side terminal voltage of a branch breaker assembled to a distribution board.

  After installing and installing the residential distribution board, an electrical contractor will perform a self-check and a connection check such as a completion check. One of the connection confirmation items is voltage confirmation of the branch circuit in a live line state. This is because 100V and 200V wiring are mixed in the distribution board for residential use, and the branch wiring from the distribution board is checked to see if it is branched at the specified voltage. In order to prevent this, a load of 100V is applied to the circuit to be operated and the load does not operate normally, or if 200V is applied to the circuit to be supplied with 100V, the load is burned out.

This voltage check is usually measured by bringing a probe such as a tester into contact with the conductive portion of the load side terminal of the branch breaker. Therefore, when the load side terminal is composed of a quick-connect terminal that is connected by simply inserting an electric wire, there is no exposed part such as a terminal screw, so the hole for voltage check (insertion hole for inspection) is a load side terminal. A probe was inserted in this hole and checked.
For example, Patent Document 1 discloses a branch breaker having a width of about 10 mm, which is referred to as a thin breaker, and the load-side terminal is formed of a fast connection terminal that can be connected by inserting an electric wire. An inspection insertion hole is provided immediately below that for inserting a probe for voltage measurement, insulation resistance measurement, and electric detection.

JP 2007-278582 A

  The voltage check performed by inserting the probe into the inspection insertion hole is performed with the probe held in the left and right hands, so the check at a high position where the distribution board is installed is troublesome. In addition, the thin branch breaker described in the above-mentioned Patent Document 1 has an inspection insertion hole that faces in the horizontal direction when viewed from the front of the distribution board in the same manner as the load side terminal. In the assembled state, it was difficult to confirm from the front, and the voltage check work was troublesome because the electric wire inserted into the load side terminal was in the way.

  Therefore, in view of such a problem, the present invention is directed to the inspection insertion hole sideways in the same manner because the load side terminal constituted by the quick connection terminal faces sideward when viewed from the front of the distribution board. Another object of the present invention is to provide a voltage measuring jig that can easily perform a voltage check on a branch breaker in which an electric wire inserted into a load side terminal is in front of an insertion hole for inspection.

In order to solve the above-mentioned problems, the invention of claim 1 is directed to a terminal voltage with respect to an inspection insertion hole provided in the vicinity of a load-side terminal of a branch breaker in which the load-side terminal is constituted by a quick-connection terminal. A voltage measuring jig provided with a pair of sensor protrusions that are simultaneously inserted into two inspection insertion holes to measure the sensor protrusions, wherein each sensor protrusion is dissociated in the left-right direction perpendicular to the insertion direction. It consists of a certain two sensor pieces, and the two sensor pieces are formed at both ends of a frame fitting formed in a U-shape, and the two fittings are in close contact with each other by closing the frame fitting. Thus, one sensor protrusion is formed, and at the rear part of the frame metal fitting, there is a probe insertion portion for connecting a probe connected to a separately provided voltage measuring device, and the two frame metal fittings are made of insulating members. Held in one Ized, characterized in that to enable the closing operation of the metal frame via the retaining member.
According to this configuration, since the pair of probes extending from the voltage measuring device are respectively connected to the two frame brackets held by the holding member, the operator has to perform a troublesome operation of operating the two probes with the left and right hands. The terminal voltage can be measured with one hand and can be measured with a simple operation.
And since the sensor protrusion is composed of two sensor pieces dissociated to the left and right, the sensor protrusion is inserted into the inspection insertion hole by passing the right and left of the electric wire so as to sandwich the electric wire connected to the load side terminal. It can be easily inserted even if the test insertion hole is behind the terminal.
In addition, the two sensor pieces constituting the sensor protrusions inserted into the inspection insertion holes have a biasing force acting in the lateral direction of dissociation, so that they are in close contact with the inner walls of the holes and can be measured in a stable state.
Furthermore, the probe direction and sensor projection direction can be configured differently, and the sensor projection can be easily inserted even if the inspection hole of the branch breaker faces in a direction that is difficult to insert from the front of the distribution board. There is smooth measurement.

According to a second aspect of the present invention, in the configuration according to the first aspect, the holding member is composed of a pair of plate-like bodies arranged so as to face the frame metal fitting from the left and right, and two members are provided by the pair of plate-like bodies. By holding the frame metal fitting and bringing the plate-shaped bodies close to each other, two sensor pieces are brought into close contact with each other to form one sensor protrusion.
According to this configuration, since the holding member is formed of a pair of plate-like bodies, an operation for constricting the frame metal fitting is easy.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the holding member is provided with illumination means for illuminating the sensor protrusion.
According to this configuration, it is possible to easily inspect by inserting the sensor protrusion into the inspection insertion hole even in a dark situation.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the direction of the two probes held by the probe insertion portion is different from the protruding direction of the pair of sensor protrusions. To do.
According to this structure, even if the inspection insertion hole of the branch breaker does not face the front of the distribution board, the direction of the attached probe and the direction of the sensor protrusion are different. The voltage can be measured by the insertion operation, and can be measured by a simple operation.
Note that “different” specifically refers to a state in which the direction of the sensor protrusion is in a direction bent by 30 ° to 90 ° with respect to the direction of the probe.

According to the present invention, since the pair of probes extending from the voltage measuring instrument are connected to the frame metal fitting, the operator does not need to perform the troublesome operation of operating the two probes with the left and right hands. It can be measured and can be measured with a simple operation.
The sensor protrusion is composed of two sensor pieces dissociated to the left and right, so that the sensor protrusion is inserted into the inspection insertion hole by passing the left and right of the electric wire so as to sandwich the electric wire connected to the load side terminal. It can be inserted and can be easily inserted even if the test insertion hole is in the back of the terminal.
Further, the two sensor pieces constituting the sensor protrusions inserted into the inspection insertion holes are not easily removed because of the urging force acting in the left-right direction to dissociate, and the measurement operation is easy.
Furthermore, the direction of the probe and the direction of the sensor protrusion can be directed in different directions, and the sensor protrusion can be easily inserted even if the inspection insertion hole of the branch breaker faces in a direction that is difficult to insert from the front of the distribution board. And smooth measurement is possible.

It is a perspective view which shows an example of the jig | tool for voltage measurement which concerns on this invention, (a) is an exploded view, (b) has shown a mode that it assembles and inserts a probe. It is a perspective view of the jig for voltage measurement seen from a different direction from Drawing 1, (a) shows before probe insertion, and (b) shows after probe insertion. It is a perspective view which shows the connection state of the probe which was partly removed and the frame metal fitting was inserted. It is a perspective view of the state where the tip of a frame metal fitting was narrowed. It is use explanatory drawing of the jig | tool for voltage measurement, and has shown the state made to approach the insertion hole for a test | inspection of a branch breaker. It is usage explanatory drawing of the jig | tool for voltage measurement, and has shown the state which narrowed the frame metal fitting in order to insert in the insertion hole for a test | inspection. It is use explanatory drawing of the jig | tool for voltage measurement, and has shown the state which inserted the sensor protrusion in the insertion hole for a test | inspection of a branch breaker. It is a perspective view of the jig for voltage measurement in case inspection voltage is 200V, (a) is an exploded view and (b) shows the state after an assembly. It is a perspective view which shows the other form of the jig | tool for voltage measurement.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. 1 to 3 show an example of a voltage measuring jig according to the present invention, FIG. 1 (a) is an exploded perspective view, FIG. 1 (b) shows how a probe is inserted, and FIG. 2 is different from FIG. FIG. 3 is a perspective view as seen from the direction, and shows a connection state between the frame metal fitting and the inserted probe with a part removed.

  As shown in the figure, the voltage measuring jig 1 is a jig used for voltage measurement in place of the probe 100 by inserting the tip of the probe 100 of a voltage measuring device (not shown) such as a tester. Yes, it has a sensor protrusion 2 to be inserted into the inspection insertion hole 65 (shown in FIG. 5) of the branch breaker at the tip, and a probe insertion part 3 for connecting the probe 100 is provided on the back, and is gripped by the operator. And holding member 5 for operating.

The sensor protrusion 2 is formed at both ends of the frame metal fitting 4 formed in a U-shape, and a probe insertion portion 3 is formed at a bent portion of the rear portion of the frame metal fitting 4.
In the following description, the direction in which the sensor projection 2 of the frame metal fitting 4 is provided is the front, the tip direction of the sensor projection 2 is the downward direction, and the arrangement direction of the holding member 5 is the horizontal direction.

  The frame metal fitting 4 is formed by bending a band-like metal piece into a U-shape and has two arm pieces 41 in parallel. The sensor protrusion 2 is composed of a pair of sensor pieces 42, and the sensor pieces 42 are formed to protrude at the tips of both arm pieces 41 at an angle of about 80 ° with respect to the extending direction of the arm pieces 41. Thus, the whole frame metal fitting 4 has a tweezers shape.

The pair of sensor pieces 42 are arranged at a certain interval by arm pieces 41 arranged in parallel, and are integrated by closing the frame metal fitting 4 and bringing the tips of the two arm pieces 41 into close contact. Two sensor protrusions 2 are formed.
FIG. 4 shows a state in which the frame metal fitting 4 is squeezed. By pressing the holding member 5 in the direction in which the holding member 5 is brought into close contact, the frame metal fitting 4 is squeezed, and the sensor pieces 42 are brought into close contact with each other. One sensor protrusion 2 is formed.

  On the other hand, the bent portion of the rear portion of the frame metal fitting 4 has a flat back surface 43, and the probe insertion portion 3 is formed. The probe insertion portion 3 has a round hole 43a for inserting the tip of the probe 100, and one arm piece 41 is brought into contact with the tip of the probe 100 inserted from the round hole 43a for electrical connection. A tongue-shaped contact piece 44 is formed by cutting out the arm piece 41 and bending it.

The voltage measuring jig 1 is configured by arranging two frame fittings 4 formed in this manner in parallel. Specifically, the sensor protrusion 2 is directed downward, and the arm pieces 41 are arranged so as to overlap vertically, and are fixed from the left and right by the holding member 5.
However, the length of the two frame fittings 4 is different so that the arrangement of the two sensor protrusions 2 matches the interval between the inspection insertion holes 65 of the branch breaker to be measured, and the upper side is a long frame fitting (first frame fitting). 4a is used, and a short frame fitting (second frame fitting) 4b is used on the lower side.

  The holding member 5 is made of a synthetic resin, which is an insulating member, and includes a pair of symmetrically formed holding plates 51. As shown in FIG. 1A, the first frame metal fitting 4a is fixed to the back surface of the holding plate 51. A plurality of first locking protrusions 51a, a plurality of second locking protrusions 51b for fixing the second frame metal fitting 4b, and a plurality of third locking protrusions 51c are provided. In addition, the 2nd latching protrusion 51b is used by the structure which test | inspects 100V voltage, and the 3rd latching protrusion 51c is used by the structure which test | inspects 200V voltage.

On the other hand, a plurality of locking holes 45 for inserting and locking the first locking projections 51a are formed in corresponding portions (arm pieces 41) of the first frame metal fitting 4a, and corresponding to the second frame metal fitting 4b. A plurality of locking holes 45 for inserting and locking the second locking projections 51b or the third locking projections 51c are formed in the portion (arm piece 41).
In addition, a pair of semicircular cutouts 52a are provided on the side surface of the holding plate 51 which is the back of the voltage measuring jig 1, and when the two holding plates 51 formed symmetrically are attached to the frame metal fitting 4, A probe insertion hole 52 for connecting the probe 100 to the frame metal fitting 4 is formed.

  5 to 7 are explanatory diagrams for measuring the load-side terminal voltage of the branch breaker 60 by the voltage measuring jig 1 configured as described above. FIG. 5 shows a sensor in the inspection insertion hole 65 of the branch breaker 60. 6 shows a state in which the protrusion 2 is brought close, FIG. 6 shows a state in which the frame metal fitting 4 is narrowed, and FIG. 7 shows a state in which the sensor protrusion 2 is inserted into the inspection insertion hole 65 of the branch breaker 60.

  Here, the branch breaker will be described. 5 to 7 show a state in which six branch breakers 60 are arranged. The branch breaker 60 is formed so as to correspond to a single-phase three-wire distribution board, an operation lever 61 that is turned on / off at the top of the figure, and two voltage phases in the distribution board at the back on the right side of the figure. It has three power supply side terminals 62 arranged vertically so as to connect a main bar (not shown) having three copper bars made of one neutral phase, and a load side on the front side which is the left side in the figure. A terminal 63 is arranged. The load side terminal 63 is formed of a quick connection terminal connected by simply inserting the electric wire 7.

Three load side terminals 63 (63a to 63c) are provided on the front surface of the branch breaker 60 in accordance with the power source side terminal 62, but a terminal cover (not shown) for closing other than the terminals to be used is installed. By sliding the terminal cover, only two terminals to which the electric wire 7 as the branch wiring is connected are exposed. The inspection insertion hole 65 is provided directly below each load side terminal 63.
In this way, the electric wire 7 is connected to the exposed two terminals of the load side terminal 63 composed of three terminals, and 100 V output or 200 V output is enabled by the selected two terminals, and in FIGS. 7 shows a connected state.

  In any case, the upper side in the figure is the front when assembled in the distribution board, and the inspection insertion hole 65 of the branch breaker 60 is in the side (or vertical direction). The load-side terminal 63 is provided with a voltage electrode terminal 63a, a neutral electrode terminal 63b, and a voltage electrode terminal 63c from the top. When the electric wire 7 is connected to both the voltage electrode terminals 63a and 63c, a 200V output is obtained. When measuring the terminal voltage of the branch breaker 60 having a 200V output, the sensor protrusion 2 is disposed so as to be separated as will be described later.

With respect to this branch breaker 60, the voltage measuring jig 1 has a frame so that the electric wire 7 is sandwiched from the front of the distribution board in the lateral direction with respect to the electric wire 7 connected to the load side terminal 63 as shown in FIG. The metal fitting 4 is inserted and brought close to the inspection insertion hole 65.
When approaching the inspection insertion hole 65, the holding member 5 is pressed as shown in FIG. 4, the frame metal fitting 4 is closed as shown in FIG. 6, and the sensor piece 42 is integrated to form the sensor protrusion 2. As shown in FIG. 7, it is inserted into the inspection insertion hole 65.
By this operation, the two sensor protrusions 2 arranged so as to match the interval of the inspection insertion hole 65 are smoothly inserted.

If the pressing operation of the holding member 5 is released after the insertion, the sensor protrusion 2 is biased in the opening direction, so that it is difficult to come out, and the connection with a terminal fitting (not shown) inside the inspection insertion hole 65 is good. To be implemented.
When the inspection is completed, the holding member 5 may be pressed again to be narrowed and extracted.

As described above, since the pair of probes 100 extending from the voltage measuring device are connected to the two frame fittings 4 held by the holding member 5, respectively, the operator has to perform the troublesome operation of operating the two probes 100 with the left and right hands. The terminal voltage can be measured with one-handed operation and can be measured with a simple operation.
And since the sensor protrusion 2 is comprised of the two sensor pieces 42 dissociated to the left and right, it passes through the right and left of the electric wire 7 so as to sandwich the electric wire 7 connected to the load side terminal 63, and the insertion hole for inspection The sensor protrusion 2 can be inserted into 65, and can be easily inserted even if the test insertion hole 65 is behind the load-side terminal 63.
In addition, the two sensor pieces 42 constituting the sensor protrusion 2 inserted into the inspection insertion hole 65 are in close contact with the inner wall of the inspection insertion hole 65 because the urging force acts in the dissociating left and right direction, and is difficult to come off. It can be measured in a stable state.
Furthermore, the direction of the probe 100 and the direction of the sensor protrusion 2 can be configured differently, and the sensor protrusion 2 can be easily formed even if the inspection insertion hole 65 of the branch breaker 60 faces a direction that is difficult to insert from the front of the distribution board. Insertion is possible and smooth measurement is possible.
In particular, as in the above embodiment, even if the inspection insertion hole 65 of the branch breaker 60 does not face the front of the distribution board, the direction of the sensor protrusion 2 is inclined by about 80 ° with respect to the direction of the mounted probe 100. Thus, the probe 100 itself can measure voltage by an insertion operation from the front of the distribution board, and can be measured by a simple operation.
Further, since the holding member 5 is formed by the pair of holding plates 51, the operation of closing the frame metal fitting 4 is easy.

FIG. 8 is a perspective view of the voltage measuring jig 1 for inspecting the load-side terminal voltage when the branch voltage is 200 V, (a) is an exploded view, and (b) shows a state after assembly. As shown in FIG. 8, the 200V-compatible jig 1 differs from the 100V-compatible configuration in the arrangement of the second frame fitting 4b.
The second frame fitting 4b is fixed to the third locking projection 51c. With this arrangement, the distance between the sensor protrusion 2 of the first frame metal fitting 4a and the sensor protrusion 2 of the second frame metal fitting 4b coincides with the distance between the two voltage electrode terminals 63a and 63c of the branch breaker 60, and measurement of 200V is possible. It becomes possible. And what is necessary is just to measure by the procedure of the said FIGS. 5-7, and the branch voltage of both 100V and 200V can be test | inspected with one voltage measurement jig | tool 1 by simple switching operation.

  FIG. 9 shows another embodiment of the voltage measuring jig 1, and an illumination device is provided in addition to the above configuration. In FIG. 9, reference numeral 8 denotes an illuminating device (illuminating means), which is fixed to one holding plate 51. The illuminating device 8 includes an LED 8a and a push button 8b. When the lighting device 8 is turned on during measurement, the illumination device 8 can easily recognize the inspection insertion hole 65 even in a dark state, and the measurement can be performed smoothly.

  In the above-described embodiment, the protruding direction of the sensor protrusion 2 is inclined by about 80 ° with respect to the mounting direction of the probe 100. However, the sensor protrusion 2 may be orthogonally crossed or only by providing a shallow angle of about 30 °. It is possible to smoothly insert the inspection insertion hole 65 facing.

  1 .. Voltage measuring jig, 2 .. Sensor projection, 3 .. Probe insertion part, 4 .. Frame bracket, 5 .. Holding member, 8 .. Illuminating device (illuminating means), 41. 42 .. Sensor piece 51.. Holding plate (holding body) 51 a to 51 c.. Locking projection 52.. Probe insertion hole 60.. Branch breaker 63 63 Load terminal 65 65 Insertion hole, 100-probe.

Claims (4)

In order to measure the terminal voltage with respect to the inspection insertion hole provided in the vicinity of the load side terminal of the branch breaker in which the load side terminal is constituted by the quick connection terminal, the two inspection insertion holes are provided. A voltage measuring jig having a pair of sensor protrusions to be inserted simultaneously,
Each sensor protrusion consists of two sensor pieces in a dissociated state in the left-right direction orthogonal to the insertion direction,
The two sensor pieces are formed at both ends of a U-shaped frame fitting, and the two sensor pieces are brought into close contact with each other by closing the frame fitting. Forming protrusions,
At the rear of the frame metal fitting has a probe insertion part for connecting a probe connected to a separately provided voltage measuring instrument,
A voltage measuring jig, wherein the two frame fittings are held and integrated by a holding member made of an insulating member, and the frame fitting can be closed via the holding member. The holding member is composed of a pair of plate-like bodies arranged to face the frame metal fitting from the left and right,
The two frame pieces are held by the pair of plate-like bodies and the plate-like bodies are brought close to each other so that the two sensor pieces are in close contact to form one sensor protrusion. Item 1. A voltage measurement jig according to Item 1.   The voltage measuring jig according to claim 1, wherein the holding member is provided with illumination means for illuminating the sensor protrusion.   4. The voltage measuring jig according to claim 1, wherein the direction of the two probes held by the probe insertion portion is different from the protruding direction of the pair of sensor protrusions.

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