JP6119266B2 - Check terminal work top cover - Google Patents

Description

  The present invention relates to an upper lid of a check terminal connected between a power supply side transformer and a power demand side high voltage meter, and in particular, replacement work, test work, measurement (power factor, harmonics) of the high voltage meter. Etc.) During work, the terminal part can be covered with the lead wires of alternative instruments and test equipment connected to the test lead insulation screws, and the main body part can be easily connected while maintaining the lead wire connection. The present invention relates to a work cover for a removable check terminal.

  Conventionally, in a high-voltage power receiving facility, a check terminal is connected between a transformer on the power supply side and a high-voltage meter on the power demand side. For replacement work, test work, and measurement work of high-pressure measuring instruments, alternative instruments, test equipment, etc. (hereinafter referred to as “external instruments”) are prepared, and test lead insulation screws (in the check terminal) Hereinafter, it is temporarily connected to an external meter connection terminal) to avoid a no-weighing state of the high-pressure measuring instrument and an uninterruptible state on the power consumer side.

Hereinafter, the configuration of the check terminal will be described.
FIG. 4 is a perspective view showing the check terminal 100 with the upper lid 90 removed. FIG. 5 is an enlarged cross-sectional view illustrating the terminal portion 80 of the check terminal 100. The check terminal 100 is installed on the wall surface or the like of the facility in a state where the outer wall surface of the rising portion 71 (details will be described later) of the box body 70 of the main body 60 is directed downward. In the following description, the upper side in FIG.
As shown in FIGS. 4 and 5, the check terminal 100 connected between the transformer on the power supply side and the high-voltage meter on the power demand side is provided with a terminal portion 80 having an external instrument connection terminal 85. It comprises a main body 60 and an upper lid 90 that detachably covers the main body 60.

  The main body portion 60 includes a terminal block 89 in which the terminal portions 80 are arranged side by side, and a box body 70 in which the terminal block 89 is installed inside. The box body 70 is a substantially plate-like member that is open at the front and is formed with a rising portion 71 that protrudes largely forward at the lower end side, and is connected to the rising portion 71 at the periphery on the upper end side and both end sides. A low wall portion 73 is formed so as to be suspended from the wall. A rectangular plate-shaped terminal block 89 is attached to the center of the bottom surface of the box body 70. Further, a rubber bushing 75 and a rubber bushing 77 through which the lead wire Wa for connection to the transformer and the lead wire Wb for connection to the high-pressure measuring instrument are bundled and passed through the rising portion 71 of the box body 70 are combined. Is provided. A first protrusion 79a, 79b having a screw hole and a sealing hole protruding upward at the center of the upper end of the box 70 and downwardly at the center of the lower end is provided.

  The terminal block 89 has seven elongated and substantially columnar terminal portions 80 arranged in parallel at regular intervals in the vertical direction. Each terminal portion 80 has a first connecting portion 81 having a first terminal screw 81a for fixing the lead wire Wa connected to the transformer at the left end portion, and a lead wire Wb connected to the high-pressure measuring device at the right end portion. A second connection portion 83 having a second terminal screw 83a for the purpose of the operation. In addition, a removable plug 87 is provided at the center of each terminal portion 80. In the normal state, the connecting plug 87 is attached as shown in FIG. These are referred to as work), and the plug 87 is removed and cut as necessary.

  Further, the terminal portion 80 is provided with a pair of external instrument connection terminals 85 between the first connection portion 81 and the second connection portion 83 (inside) so as to face the plug 87. . A lead wire (hereinafter referred to as an external instrument lead wire) Wc of an external instrument for connecting to the external instrument as necessary when working is fixed to each external instrument connection terminal 85 by a fixing screw 85a. The handle portion h of the fixing screw 85a is colored or sticking differently for each terminal portion 80, so that the terminal portion 80 can be identified by color. During the work, each external instrument connection terminal 85 is connected to an external instrument lead wire Wc having the same color as the handle portion h.

  The upper lid 90 is made of a substantially box-shaped member that is open on the rear side and the lower side, which are the main body portion 60 side, and is attached to the main body portion 60 so as to cover and seal the terminal block 89 on which the terminal portions 80 are arranged in parallel. . Further, second protrusions 91a and 91b having screw holes and sealing holes are provided at the upper and lower ends of the upper cover 90 so as to face the first protrusions 79a and 79b of the main body 60, and these are provided in the main body. The first protrusions 79a and 79b of the part 60 are detachably attached by screwing or the like. The material of the upper lid 90 and the main body 60 is an opaque member having insulating properties, such as a resin material of ABS resin.

  During the work, the upper lid 90 of the check terminal 100 is removed from the main body 60, and one end of the external instrument lead wire Wc for connecting an external instrument provided outside the check terminal 100 is connected to each external terminal in the check terminal. Secure to the instrument connection terminal 85. Since the connected external instrument lead wire Wc is pinched during the operation, the upper lid 90 attached to the check terminal 100 cannot be attached to the main body part 60, and the terminal part 80 of the check terminal 100 is exposed, and between the terminal parts 80 There is a risk that a short circuit accident such as the above and an electric shock accident of an operator may occur.

  In order to prevent such an accident, what covers the terminal part 80 of a check terminal at the time of work is proposed. For example, in Japanese Patent Application Laid-Open No. 2007-132850 of “Patent Document 1”, “Check terminal and method of measuring electric energy using the same”, notches are provided on both sides of the lid, and lead wires of external instruments are passed. What is closed with an elastic plate (rubber sheet) having horizontal straight cuts is proposed.

JP 2007-132850 A

  However, in the “check terminal” described in Patent Document 1, since the cut is a horizontal straight line, when the rubber sheet is thinned, the rubber sheet is greatly swollen from the portion where the lead wire is sandwiched, and the lead wire hangs down. There was a problem. Also, if the rubber sheet is made thicker to prevent the rubber sheet from curling, a force is applied to the lead wire when the lid is opened and closed, and the lead wire is pulled from the connected external instrument connection terminal (test terminal). There were occasional drops.

  The present invention has been proposed to solve the above-described problems. That is, the object of the present invention is to attach and detach the external instrument lead wire to the main body part easily while maintaining the state where the external instrument lead wire is connected to the external instrument connection terminal when replacing the high-pressure measuring instrument. An object of the present invention is to provide a check terminal work top cover that can prevent a short circuit accident or the like by covering the charging part).

The upper lid for work of the check terminal which is an embodiment of the present invention,
A main body (60) having a terminal portion (80) having an external meter connection terminal (85) for connecting an external meter used for replacement work, test work, and measurement work of a high-pressure measuring instrument. ) Is a check terminal work top cover ( 1) detachably covering,
At least the a main body portion side substantially box shape which is opened, the Oite perpendicular sides relative to the insertion direction of the external instrument with the respective external instrument connected external instrument lead wire for connecting the terminal (Wc), wherein A lid (90a ) in which a notch (10 ) is formed at a location substantially opposite to the terminal portion;
It is arranged so as to close the notch side of the lid and the external instrumentation leads cuts penetrating in the thickness direction for passing (Wc) (3 0) elastically is formed an insulating sheet (2 0 ) And
The notch is
A substantially linear lead-in portion (31) cut so as to extend obliquely upward from the edge of the elastic insulating sheet, and a substantially arc-like shape so as to bend downward from the leading end side of the lead-in portion. A lead wire lead-out portion (33), and a substantially J-shaped cut.
The lead wire outlet portion, said formed outside the instrument connection terminal substantially opposite positions, substantially tongue-shaped cut piece is more formed on the cut of the lead wire outlet portion (35) is Makureru downward it allows the from the opened outlet hole (3 7) external instrumentation leads are drawn, along with the turn-up was該切lump piece supporting the external instrument lead wire from the lower side, the upper side wall of the cut of the lead wire outlet portion It is characterized in that it is configured to be pressed so as to be in close contact.
In addition, the upper lid for work of the check terminal which is an embodiment of the present invention,
A main body (60) having a terminal portion (80) having an external meter connection terminal (85) for connecting an external meter used for replacement work, test work, and measurement work of a high-pressure measuring instrument. ) Is a check terminal work top cover (2) that detachably covers,
On the side surface perpendicular to the insertion direction of the external instrument lead wire (Wc) that is at least substantially box-shaped with the main body side open and that connects the external instrument and each external instrument connection terminal, A lid (90b) in which a notch (10a) is formed at a position substantially opposite to
An elastic insulating sheet (20a) which is disposed so as to close a notch on the side surface of the lid and has a cut (30a) penetrating in the thickness direction for passing the external instrument lead wire (Wc); With
The notch is
A lead wire lead-out portion (33a) cut into an inverted U-shape;
A substantially linear lead-in portion (31a) cut from the end edge of the elastic insulating sheet so as to extend obliquely upward toward the approximate center of the linear portion on the end edge side of the lead wire lead-out portion. And
The lead wire lead-out portion is formed at a position substantially opposite to the external instrument connection terminal, and a substantially tongue-shaped cut piece (35a) formed by cutting the lead wire lead-out portion is bent downward, The external instrument lead wire is pulled out from the opened lead hole (37a), and the cut piece that has been squeezed supports the external instrument lead wire from the lower side and is in close contact with the upper wall surface of the cut of the lead wire lead-out portion. It is good also as having set it as the structure pressed.

The notch (30, 30a) temporarily holds the external instrument lead wire (Wc) when attaching the work top lid (1, 2) to the edge side of the insulating elastic sheet (20, 20a). A holding part (39) for this purpose may be further formed.
The front Symbol pulling member (31, 31a) and the lead wire outlet portion for at least one of the (33, 33a), the same color as the external instrument connection terminals (85) of said body portion (60) It is also preferable to configure so that the identification indications (A, B, A ′, B ′) are given.

  According to the work upper lids (1, 2) of the check terminal according to the present invention, the notches (10, 10a) of the lids (90a, 90b) and the notches (30, 30a) of the elastic insulating sheets (20, 20a). The external instrument lead wire Wc can be easily attached to and detached from the main body (60), and the burden on the operator can be reduced. The upper cover (1, 2) of the check terminal covers the terminal part 80 (charging part) of the terminal block (89) so as to be hermetically sealed, thereby preventing a short circuit accident between the terminal parts 80 and an electric shock accident of workers. be able to. In addition, by forming the cuts (30, 30a) with the lead wire lead portions (33, 33a), the lead wire lead portions (33, 33a) can be used without turning the lead portions (31, 31a). The external instrument lead wire (Wc) can be pulled out with only the cut pieces (35, 35a) being drawn downward. The external instrument lead wire (Wc) can be grasped lightly and horizontally by the drawing hole (37, 37a) and the cut piece (35, 35a), and the connection state with the external instrument connection terminal (85) is stably maintained. be able to.

It is the schematic which shows the state which attached the upper cover for work of the check terminal of this invention to the main-body part of the check terminal, (a) is a front view, (b) is the right view. FIG. 5 is an explanatory diagram for explaining a state of extending a part of the right side surface of the work upper lid of the check terminal of the present invention until the external instrument lead wire is pulled into the lead wire lead-out portion of the cut, (a) The state where the external instrument lead wire is being moved to the lead-in portion, (b) is the state where the external meter lead wire is being moved to the lead wire lead-out portion, and (c) is the external meter lead wire being drawn into the lead wire lead-out portion. State. The state which attached the work upper cover which is a modification of the work upper cover of the check terminal of this invention to the main-body part of a check terminal, (a) is a right view, (b) is the part expanded, and external It is explanatory drawing explaining the state with which the instrument lead wire was hold | maintained at the holding | maintenance part, and the state withdraw | derived from the lead wire extraction part. It is a perspective view which shows the check terminal of the state which removed the upper cover. It is an expanded cross-sectional view explaining the terminal part of a check terminal.

An embodiment of the upper lid for work 1 of the check terminal of the present invention will be described based on the configuration of the upper lid 90 used at the normal time described above.
1A and 1B are schematic views showing a state in which the upper lid 90 for the check terminal of the present invention is attached to the main body 60 of the check terminal instead of the upper lid 90, where FIG. 1A is a front view and FIG. FIG. Note that the left side surface has the same configuration as the right side surface, and a description thereof will be omitted.
Hereinafter, with respect to the upper lid for work of the check terminal of the present invention (hereinafter referred to as the upper lid for work) 1, the same shape and configuration as those of the upper lid 90 used at the normal time described above are denoted by the same reference numerals and duplicated explanations. Is omitted, and only different parts will be described.
As shown in FIG. 1, the working upper lid 1 includes a lid 90 a having notches 30 provided on both side surfaces, and an elastic insulating sheet 20 that is attached so as to close the notches 30. A window portion 40 is formed at a substantially central position on the front surface of the lid 90a so as to open at a position substantially opposite to the terminal block 89, so that the connection status of all the terminal portions 80 can be confirmed. A transparent member 41 is attached. The transparent member 41 is, for example, a transparent resin plate or a resin plate having translucency.

  As shown in FIG. 1A, lead wires Wa connected to a transformer (not shown) through a rubber bushing 75 are respectively connected to the first connecting portion 81 and the second connecting portion 83 of each terminal portion 80. A lead wire Wb connected to a high-pressure meter (not shown) through the rubber bushing 77 is inserted and fixed. In addition, an external instrument lead wire Wc is inserted into each external instrument connection terminal 85 as necessary, and is fixed by a fixing screw 85a (in FIG. 1A, the external instrument connection terminal 85 on the right side is fixed. Only the external instrument lead wire Wc is shown as an imaginary line). Each external instrument lead wire Wc is connected to the external instrument using a cut 30 (described later) provided on the side surface of the lid 90a.

  As shown in FIG. 1 (b), the lid 90a has substantially the same shape as the upper lid 90, and on both the left and right sides thereof, there are inverted L-shaped cutouts 10 that cut out the rear lower side of the upper lid 90. Is formed. In addition, a substantially trapezoidal elastic insulating sheet 20 is attached to the lid 90a on the outer wall side so as to close the opening formed by the notch 10. The elastic insulating sheet 20 is made of a material having flexibility and insulating properties, such as a rubber sheet or a resin sheet. The elastic insulating sheet 20 has seven incisions 30 penetrating in the thickness direction for passing an external instrument lead wire Wc that electrically connects an external instrument connection terminal 85 inside the check terminal 100 and an external instrument as an external device. The same number is juxtaposed in the vertical direction so as to correspond to each of the terminal portions 80.

Each incision 30 is substantially J-shaped, and bends in a downward direction provided on the leading end side of a linear lead-in portion 31 that is cut so as to extend obliquely upward from the edge of the elastic insulating sheet 20. Thus, the lead wire lead-out portion 33 is cut into a substantially curved shape (substantially arc shape) . Each lead wire lead-out portion 33 is provided at a position substantially opposite to each of the seven pairs of external instrument connection terminals 85 of each terminal portion 80, and each external instrument lead wire Wc connected to the external instrument connection terminal 85 is The lead wire lead-out portion 33 provided at a substantially opposite position is drawn out from the connected portion in a substantially horizontal direction. And the color of the handle portion h (see FIG. 5) of the corresponding external instrument connection terminal 85 on the peripheral edge of the rear end a of the lead-in portion 31 of each cut 30 and the peripheral edge of the lead wire lead-out portion 33 Identification displays A and B of the same color are made. In addition, it is also preferable to provide an identification display C at a position facing each terminal portion 80 so that the leading position of the external instrument lead wire Wc can also be seen on the front surface of the lid 90a (see FIG. 1A).

Hereinafter, a method of using the work top lid 1 of the present invention will be described.
FIG. 2 is an explanatory diagram for explaining a state in which a part of the right side surface of the work top lid 1 is enlarged until the external instrument lead wire Wc is drawn into the lead wire lead-out portion 33 of the notch 30. A state in the middle of moving the external instrument lead wire Wc to the lead-in portion 31, (b) is a state in the middle of moving the external meter lead wire Wc to the lead wire lead-out portion 33, and (c) is an external meter in the lead wire lead-out portion 33. In this state, the lead wire Wc is drawn.
At the time of work, the upper cover 90 is removed from the main body part 60 of the check terminal 100, and an external instrument with the same color coating as the handle part h of the terminal part 80 to the external instrument connection terminal 85, if necessary. The lead wire Wc is connected and the plug 87 is removed, and the work upper lid 1 is attached to the main body 60.

  By attaching the work upper lid 1, the external instrument lead wire Wc that is connected to the external instrument connection terminal 85 and hangs downwardly causes the elastic insulating sheet 20 to be temporarily deformed as shown in FIG. The state is sandwiched between the edge b of the elastic insulating sheet 20 of the work top lid 1 and the wall 73 on the side end side of the main body 60. At this time, it is desirable that the external instrument lead wires Wc be arranged in the vertical direction in the same order as the colors of the identification display A (C) so that the external instrument lead wires Wc are not entangled with each other. Next, with the external instrument lead wire Wc deformed by the elastic insulation sheet 20, the external instrument lead wire Wc is connected to the rear end a of the lead-in portion 31 of the notch 30 with the same color identification indications A and B. Move to part.

  Further, as shown in FIG. 2B, the external instrument lead wire Wc is moved through the lead-in portion 31 to the lead-wire lead-out portion 33 provided on the tip side while temporarily deforming the elastic insulating sheet 20. . Then, as shown in FIG. 2C, the external instrument lead wire Wc is drawn into the lead wire lead-out portion 33. By pulling in the external instrument lead wire Wc, a lead-out hole 37 is formed so that the substantially tongue-shaped cut piece 35 surrounded by the lead-wire lead-out portion 33 is bent substantially downward, and the external instrument lead wire Wc is formed from the lead-out hole 37. Pull out. Here, the lead wire lead-out portion 33 is formed so that the size of the lead-out hole 37 is slightly larger than the cross section of the external instrument lead wire Wc.

  In addition, it is desirable to move the external instrument lead wire Wc in order from the lead wire lead-out portion 33 drawn from the upper lead wire lead-out portion 33. Further, during the operation, particularly when the external instrument lead wire Wc is moved, the connection between the external instrument connection terminal 85 and the external instrument lead wire Wc can be visually confirmed from the window 40. When removing the work top lid 1 from the main body 60, the work may be performed in the reverse order.

  According to the work top lid 1 of the check terminal of the present invention, the external instrument lead wire Wc is connected to the external instrument connection terminal 85 by the notch 10 of the lid 90a and the cut 30 of the elastic insulating sheet 20 that closes the cover 90a. Can be easily attached to and detached from the main body 60. Since the work cover 1 covers the terminal part 80 (charging part) of the terminal block 89, it is possible to prevent a short circuit accident between the terminal parts 80 and an electric shock accident of the worker.

  By making the lead-in part 31 of the cut 30 into a straight line extending obliquely upward inward, the external instrument lead wire Wc can be easily drawn along the cut 30 from below to the lead wire lead-out part 33. Further, only the substantially tongue-shaped cut piece 35 surrounded by the lead wire lead-out portion 33 is formed without curling the lead-in portion 31 by the curvilinear lead wire lead-out portion 33 provided on the front end side of the lead-in portion 31 and bent downward. Can be drawn downward to form a lead-out hole 37, and the external instrument lead wire Wc can be drawn out from the lead-out hole 37. The pull-in portion 31 has a shape that extends obliquely upward and inward from the edge of the elastic insulating sheet 20, and the lead-out hole 37 is formed on the tip side thereof, thereby preventing the pull-in portion 31 of the elastic insulating sheet 20 from curling, The notch 10 on the side surface of the check terminal 100 can be properly closed to prevent a short circuit accident or the like.

The lower part of the outer peripheral wall of the external instrument lead wire Wc drawn out from the lead-out hole 37 is supported by a notched piece 35 that is bent downward, and the external instrument lead wire Wc is formed on the upper wall surface of the lead-out hole 37 by the notch piece 35. It is pressed so that it adheres. Therefore, the external instrument lead wire Wc can be lightly grasped by the lead-out hole 37 and the cutting piece 35, and the connection state with the external instrument connection terminal 85 can be stably maintained.
By providing the lead wire lead-out portion 33 so as to face the position of the external instrument connection terminal 85, the external instrument lead wire Wc is horizontally held by the lead-out hole 37, so the external instrument lead wire Wc and the external instrument connection terminal It is possible to reduce the force related to the connection portion with 85, and it is difficult for the external instrument lead wire Wc to come off from the external instrument connection terminal 85.

The lead wire lead-out portion 33 is provided so as to face the position of the external instrument connection terminal 85, and the identification display A, B, By providing C, the external instrument lead wire Wc can be easily sandwiched between the lead-out holes 37. In addition, the lead-out position of the external instrument lead wire Wc is clarified, and human error prevention such as connection error can be prevented.
When attaching or removing the work upper lid 1, a slight force may be applied to the connecting portion between the external instrument lead wire Wc and the external instrument connection terminal 85. Therefore, it can be opened and closed while visually confirming the connection status of the external instrument lead wire Wc.

  As shown in FIG. 1, the work top lid 1 of the check terminal may further include a cover member 50 that covers the retracting portion 31 of the cut 30. The cover member 50 shown in FIG. 1 is made of a material having flexibility and insulating properties, and is a pair of substantially band-shaped members that cover the lead-in portions 31 provided side by side on the respective sides of the lid 90a. The upper end portion and the lower end portion of the cover member 50 are respectively attached to the upper part of the side surface of the lid 90a and the lower part of the side surface of the box 70 using an attachment member (not shown) such as a hook-and-loop fastener.

  With the configuration provided with the cover member 50, when the elastic insulating sheet 20 is hit with a tool or the like, the elastic insulating sheet 20 is deformed and enters the inside of the work top lid 1, and contacts the terminal portion 80 to cause a short circuit. Accidents can be prevented. Moreover, since it is provided so as to reinforce the lead-in part 31 of the notch 30, the external instrument lead wire Wc drawn out from the lead-out hole 37 can be held more reliably.

Next, a work upper cover 2 which is a modification of the work upper cover 1 of the check terminal of the present invention will be described with reference to the drawings.
FIG. 3 shows a state in which a work top cover 2 which is a modification of the work top cover 1 of the check terminal of the present invention is attached to the main body 60 of the check terminal, (a) is a right side view, and (b) is It is explanatory drawing explaining the state which expanded a part and hold | maintained the external instrument lead wire Wc in the holding | maintenance part 39, and the state pulled out from the lead wire extraction | drawer part 33a. Hereinafter, the same shapes and configurations as those of the work upper lid 1 are denoted by the same reference numerals, and redundant description is omitted, and only different portions will be described.
As shown in FIG. 3, the working upper lid 2 is different from the working upper lid 1 in the shapes of the notch 10, the elastic insulating sheet 20, the notch 30, and the like.

  The work upper lid 2 includes a lid body 90b provided with a plurality of notches 10a, and an elastic insulating sheet 20a attached so as to close the notches 10a. A plurality of substantially parallelogram-shaped cutouts 10a extending from the outer edge toward the inner side obliquely upward are formed at predetermined intervals on the side surface of the lid 90b of the upper lid 2 for work so as to substantially face each terminal portion 80. Yes. Due to these notches 10a, the rear side of the side surface of the lid 90b has a substantially comb shape. In addition, a substantially parallelogram-shaped elastic insulating sheet 20a is attached to the outer wall side of the side surface of the lid 90b so as to close the openings formed by these notches 10a at a time. The elastic insulating sheet 20a is attached to the lid 90b using the entire portion other than the portion facing the notch 10a, and is a portion corresponding to comb teeth on the upper side and the lower side of each notch 10a. Etc. form a frame F that supports the elastic insulating sheet 20a.

  In the elastic insulating sheet 20a, cuts 30a penetrating in the thickness direction are formed at locations facing the respective notches 10a. The notch 30a includes a substantially straight lead-in portion 31a cut so as to extend obliquely upward from the edge b of the elastic insulating sheet 20a, and a lead wire lead-out portion 33a cut into an inverted U shape. Consists of. The leading end c of the lead-in portion 31a is provided so as to strike obliquely at the approximate center of the right straight portion of the lead wire lead-out portion 33a. Each lead wire lead-out portion 33a is provided at a position substantially opposite to each of the seven pairs of external instrument connection terminals 85 of each terminal portion 80, and the curved portion of the lead wire lead-out portion 33a is a cross section of the external instrument lead wire Wc. The curvature is slightly smaller than the outer edge. The lead-out position of the external instrument lead wire Wc connected to each external instrument connection terminal 85 is determined in the same way as the work upper lid 1.

  On the rear end a side of the retracting portion 31a, a holding portion 39 that is curved downward in a substantially U shape is formed. This holding portion 39 is for temporarily holding the external instrument lead wire Wc to be moved to the lead wire lead-out portion 33a of each cut 30a when the work top lid 2 is attached to and detached from the main body portion 60. The holding portion 39 is provided from the edge b of the elastic insulating sheet 20a so that the held external instrument lead wire Wc does not hit the wall portion 73 of the main body portion 60 when the work upper lid 2 is attached to the main body portion 60. A little inside. The curved portion of the holding portion 39 has a slightly smaller curvature than the outer edge of the cross section of the external instrument lead wire Wc. In addition, identification marks A ′ and B ′ are provided on the work upper lid 2, similarly to the corresponding external instrument connection terminals 85, on the peripheral portions of the holding portions 39 of the respective cuts 30 a and the lead wire lead-out portions 33 a. .

Next, the method of using the work upper lid 2 will be described only for the parts different from the work upper lid 1.
In the case of the work upper lid 2, before being attached to the main body portion 60 of the check terminal 100, the color of the covering of the external instrument lead wire Wc is confirmed and held in the holding portion 39 provided with the same color identification display A ′. By holding the external instrument lead wire Wc on the work upper lid 2 in advance, the external instrument lead wire Wc can be attached to the main body 60 so as not to be entangled with each other. Thereafter, the external instrument lead wire Wc of the holding portion 39 may be moved to the lead wire lead-out portion 33a in the same manner as the work upper lid 1.

According to the work upper cover 2 which is a modification of the work upper cover 1 of the check terminal, in addition to the effects described in the work upper cover 1, the following effects are obtained.
In the work upper lid 2, when the work upper lid 2 is attached to and detached from the main body 60, the external instrument lead wire Wc having the same color as the identification display A ′ is attached to the holding portion 39 of the elastic insulating sheet 20a in advance. The lead wire Wc can be held so as not to get entangled.
Further, the distance to which the external instrument lead wire Wc is moved after the work upper lid 2 is attached to the main body 60 can be shortened, and the force applied to the connection portion between the external instrument lead wire Wc and the external instrument connection terminal 85 can be reduced. Can be reduced.

  In the holding portion 39, as shown in FIG. 3B, the holding hole 39x is formed by the external instrument lead wire Wc so that the substantially tongue-shaped cut piece 39y surrounded by the holding portion 39 is rolled upward. The cut piece 39y presses the external instrument lead wire Wc so as to be in close contact with the lower side wall surface of the holding hole 39x. Since the external instrument lead wire Wc is lightly gripped by the holding hole 39x and the notch piece 39y and the deformation of the elastic insulating sheet 20a is restricted by the frame F, the external instrument lead wire Wc can be temporarily held in a stable state. it can.

  Further, by forming the lead-in portion 31a and the lead wire lead-out portion 33a as described above, the external instrument lead wire Wc drawn from the lead-out hole 37a is connected to the lead wire lead-out portion 33a as shown in FIG. The substantially tongue-shaped cut piece 35a surrounded can be surely supported from directly below and pressed so as to be in close contact with the semicircular arc upper wall surface of the extraction hole 37a. Therefore, the connection state with the external instrument connection terminal 85 can be maintained more stably.

  The frame F that supports the elastic insulating sheet 20a can effectively prevent the cut 30a from being bent or deformed, and can more reliably support the external instrument lead wire Wc that has been pulled out. Further, like the work top lid 1, it is possible to prevent a part of the elastic insulating sheet 20 from being easily bent inward of the check terminal 100 by the cut 30. Therefore, even when the cover member 50 is not attached, it is possible to prevent a tool or the like from entering the inside of the work top lid 2 to some extent and prevent a short circuit accident or the like.

  The holding unit 39 is not limited to the above-described configuration as long as it can temporarily hold the external instrument lead wire Wc. For example, although not shown in the drawings, the holding portion 39 may be a through hole, and a cover member 50 may be provided to cover the through hole. Further, the elastic insulating sheet 20a closes the plurality of cutouts 10a at a time, but a plurality of the cutouts 10a may be provided individually or may be attached from the inside of the lid 10a.

  The present invention is not limited to the above-described configuration of the invention, and the elastic insulating sheet 20 having the cuts 30 and 30a in the notches 10 and 10a provided on the side surfaces of the lids 90a and 90b of the upper lids 1 and 2 for work. 20a, the cuts 30 and 30a are substantially linear lead-in portions 31 and 31a cut diagonally upward from the edge of the elastic insulating sheet 20a, and external instrument lead wires. If it is the structure which has the lead wire extraction parts 33 and 33a provided so that the cut-out pieces 35 and 35a which support the external instrument lead wire Wc etc. and the extraction holes 37 and 37a which draw | extract Wc, etc. may be formed of this invention Of course, various changes can be made without departing from the scope of the invention.

  Although the thickness of the elastic insulating sheets 20 and 20a depends on the elasticity of the material, the thickness is not limited to a uniform thickness as long as the function of each part can be exhibited. For example, the thickness may be partially different depending on the role, such as reducing the thickness of the peripheral edge of each drawing portion 31 so that the external instrument lead wire Wc can be easily drawn.

  In the embodiment described above, the incisions 30 and 30a are linear, and the main body 60 can be sealed by the work upper lids 1 and 2 when working. However, if the cover member 50 described above is attached and used. The portions of the lead-in portions 31 and 31a that are covered with the cover member 50 can have a width in the cuts 30 and 30a to reduce the friction when the external instrument lead wire Wc moves. The cover member 50 has a structure that is simple and easy to attach and remove in consideration of economy and work efficiency. However, the material, shape, configuration, and the like of the cover member 50 are the same as those described above as long as the retractable portion 31 of the cut 30 can be covered. Not limited to this, it can be changed as appropriate.

  The configuration of the working upper lid of the present invention is not limited to the check terminal, and can be used in various devices including a terminal portion into which a lead wire or the like is inserted in a substantially horizontal direction.

1, 2 Work top lid 10, 10a Notch 20, 20a Elastic insulation sheet 30, 30a Notch 31, 31a Recess 33, 33a Lead wire lead 35, 35a Notch 37, 37a Lead hole 40 Window 50 Cover member 60 Main unit 70 Box 80 Terminal unit 81 First connection unit 83 Second connection unit 85 External instrument connection terminal 87 Plug 89 Terminal block 90 Upper lid 90a, 90b Lid 100 Check terminal Wa, Wb Lead wire Wc External instrument lead wire A, B, C, A ', B' identification display

Claims (4)

A main body (60) having a terminal portion (80) having an external meter connection terminal (85) for connecting an external meter used for replacement work, test work, and measurement work of a high-pressure measuring instrument. ) Is a check terminal work top cover ( 1) detachably covering,
At least the a main body portion side substantially box shape which is opened, the Oite perpendicular sides relative to the insertion direction of the external instrument with the respective external instrument connected external instrument lead wire for connecting the terminal (Wc), wherein A lid (90a ) in which a notch (10 ) is formed at a location substantially opposite to the terminal portion;
It is arranged so as to close the notch side of the lid and the external instrumentation leads cuts penetrating in the thickness direction for passing (Wc) (3 0) elastically is formed an insulating sheet (2 0 ) And
The notch is
A substantially linear lead-in portion (31) cut so as to extend obliquely upward from the edge of the elastic insulating sheet, and a substantially arc-like shape so as to bend downward from the leading end side of the lead-in portion. A lead wire lead-out portion (33), and a substantially J-shaped cut.
The lead wire outlet portion, said formed outside the instrument connection terminal substantially opposite positions, substantially tongue-shaped cut piece is more formed on the cut of the lead wire outlet portion (35) is Makureru downward it allows the from the opened outlet hole (3 7) external instrumentation leads are drawn, along with the turn-up was該切lump piece supporting the external instrument lead wire from the lower side, the upper side wall of the cut of the lead wire outlet portion An upper lid for work of a check terminal characterized by being configured to be pressed so as to be in close contact. A main body (60) having a terminal portion (80) having an external meter connection terminal (85) for connecting an external meter used for replacement work, test work, and measurement work of a high-pressure measuring instrument. ) Is a check terminal work top cover (2) that detachably covers,
On the side surface perpendicular to the insertion direction of the external instrument lead wire (Wc) that is at least substantially box-shaped with the main body side open and that connects the external instrument and each external instrument connection terminal, A lid (90b) in which a notch (10a) is formed at a position substantially opposite to
An elastic insulating sheet (20a) which is disposed so as to close a notch on the side surface of the lid and has a cut (30a) penetrating in the thickness direction for passing the external instrument lead wire (Wc); With
The notch is
A lead wire lead-out portion (33a) cut into an inverted U-shape;
A substantially linear lead-in portion (31a) cut from the end edge of the elastic insulating sheet so as to extend obliquely upward toward the approximate center of the linear portion on the end edge side of the lead wire lead-out portion. And
The lead wire lead-out portion is formed at a position substantially opposite to the external instrument connection terminal, and a substantially tongue-shaped cut piece (35a) formed by cutting the lead wire lead-out portion is bent downward, The external instrument lead wire is pulled out from the opened lead hole (37a), and the cut piece that has been squeezed supports the external instrument lead wire from the lower side and is in close contact with the upper wall surface of the cut of the lead wire lead-out portion. A check terminal work top lid characterized by being configured to be pressed. The notch (30, 30a) temporarily holds the external instrument lead wire (Wc) when attaching the work top lid (1, 2) to the edge side of the elastic insulating sheet (20, 20a). The upper cover for the check terminal according to claim 1, further comprising a holding portion (39) for performing the check terminal.   Identification display of the same color as the external instrument connection terminal (85) of the main body (60) on at least one of the lead-in part (31, 31a) and the lead wire lead-out part (33, 33a) The work top lid of the check terminal according to any one of claims 1 to 3, wherein (A, B, A ', B') is applied.