JP2009146724A - Safety device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device capable of inserting a connection member into an arbitrary end support section arranged on a terminal device and performing wiring change of an electric circuit and a signal circuit without causing snapping of a line. <P>SOLUTION: A grounding plate u10 is mounted via a grounding mounting metal fitting 1 mounted on a mounting section formed on an insulating case s of the terminal device U, and a plug-in protector S mounted on the grounding plate u10 is connected with a terminal device U via the connection member 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a security device in which a plug-in protector is attached to a terminal device.

  Hereinafter, the safety device disclosed in Patent Document 1 according to the earlier application of the present applicant will be outlined as an example of a conventional security device with reference to FIG.

  As shown in FIG. 3, the conventional security device H includes a plug-in security device S and a terminal device U.

  The plug-in protector S has a case s formed of an insulating material, and a surge absorption circuit made of a known varistor, a lightning arrester, or the like is disposed in the case s.

  The case s of the plug-in protector S has a through hole s1 extending in the vertical direction, and the through hole s1 has an inner diameter slightly larger than the outer diameter of the head b1 of the bolt b inserted through the through hole s1. The upper hole s11, the intermediate hole s12 having an inner diameter smaller than the inner diameter of the upper hole s11, and the lower hole s13 having an inner diameter smaller than the inner diameter of the intermediate hole s12. In addition, a flange s14 that extends inward of the upper hole s11 is formed below the opening of the upper hole s11. In addition, w is a washer which contacts the lower surface of the flange s14.

  The terminal device U has an insulating case u1, and a number of known terminal board terminals u2 and u3 are arranged in parallel in the insulating case u1, and surge absorption provided in the plug-in protector S is provided. A large number of terminal portions u4, u5, u6 made of known fitting recesses for connecting the circuit to the outside are arranged in parallel.

  u7 is a terminal portion similar to the above-described terminal portions u4, u5, u6, which is formed of fitting recesses in which a large number of line terminals f of the plug-in protector S can be inserted on the upper surface of the terminal device U. The plug-in protector S is attached to the terminal device U by inserting the line terminal f of the plug-in protector S into the terminal portion u7 of the terminal device U.

  The insulating case u1 of the terminal device U is formed with a mounting portion u9 to which a bolt u8 is attached. The through-hole formed in the vertical portion u10 ′ of the substantially inverted L-shaped ground plate u10 is formed in the bolt u8. The ground plate u10 is attached to the insulating case u1 by inserting the hole and screwing the nut u11 into the bolt u8. As described above, when the plug-in protector S is attached to the terminal device U, the horizontal portion u10 ″ of the ground plate u10 is configured to come into contact with the ground terminal fitting e disposed in the case s.

  As described above, the line terminal f of the plug-in protector S is inserted into the terminal portion u7 of the terminal device U, and then the head b1 of the bolt b inserted through the through hole s1 of the plug-in protector S. Applying a screwdriver, the bolt b is pressed downward against the coil spring y, and the bolt b is rotated so that the bolt b is screwed to the nut n fixed to the horizontal portion u10 ″ of the ground plate u10. Thus, the plug-in protector S is attached to the terminal device U.

Japanese Patent No. 3315548

  Conventionally, when a security device is used as a terminal device, it is connected to a predetermined line and used as a terminal device for an electric circuit, a signal circuit, or the like.

  In order to place the plug-in protector on the terminal board terminal of the terminal device, it is conceivable to change the wiring of the terminal board terminal already used to another terminal board terminal. Even if temporarily, there is a case where the line cannot be disconnected by changing the wiring. In this state, there is a problem that the plug-in protector cannot be arranged.

  Further, in the case of a security device in which a plug-in protector has already been added to the terminal device, the plug-in can be connected to any terminal board terminal of the terminal device due to the configuration or arrangement of the ground plate arranged in the terminal device. There was a problem that a protector could not be inserted.

  An object of the present invention is to solve the problems of the above-described conventional security device.

  In order to achieve the above-described object, the present invention attaches a grounding plate to a grounding metal fitting attached to a mounting part formed in an insulating case of a terminal device, and plug-in security attached to the grounding plate. The container is configured to be connected to the terminal device via a connecting member.

  Since this invention has the structure mentioned above, there can exist the effect described below.

  As described above, the ground plate is attached via the ground mounting bracket attached to the attachment portion formed in the insulating case of the terminal device, and the plug-in protector attached to the ground plate is connected via the connecting member. Since it is configured to be connected to the terminal device, the connecting member can be inserted into any terminal portion provided in the terminal device. Therefore, the wiring of the electric circuit or the signal circuit can be changed, and the line can be disconnected. It can be done without triggering.

  As described above, the ground plate is attached via the ground mounting bracket attached to the attachment portion formed in the insulating case of the terminal device, and the plug-in protector attached to the ground plate is connected via the connecting member. Since it is configured to be connected to the terminal device, the connecting member can be inserted into an arbitrary terminal portion provided in the terminal device. Therefore, a plug-in protector has already been added to the terminal device. In the case of existing safety devices, solve the problem that the plug-in protector cannot be inserted into any terminal board terminal of the terminal device due to the configuration or arrangement of the ground plate arranged in the terminal device. Can do.

  Hereinafter, examples of the present invention will be described with reference to FIGS. 1 and 2, but the present invention is not limited to these examples as long as the gist of the present invention is not exceeded. In addition, since the basic structure of the plug-in protector S and the terminal device U which comprise the security device H mentioned above is the same also in the security device H of this invention, it is the security device H mentioned above below. The description of the same configuration is omitted, and the same reference numerals are used for the same configuration.

  In the conventional security device H described above, a substantially inverted L-shaped ground plate u10 is directly attached to a mounting portion u9 formed in the insulating case u1 of the terminal device U by a bolt u8 and a nut u11. However, in the present invention, the mounting portion u9 formed in the insulating case u1 of the terminal device U is formed as a vertically long belt-like plate material by bolts u8 and nuts u11, and the horizontal cross-sectional shape is a substantially U-shaped ground attachment The earth plate u10 is configured to be attached via the metal fitting 1.

  Through holes 1a are formed in the upper and lower ends of the ground mounting bracket 1 described above, and the lower end of the ground mounting bracket 1 in a vertical state is disposed in the mounting portion u9. A bolt u8 is inserted into a through-hole 1a and a through-hole (not shown) drilled in the attachment portion u9, and then a nut u11 is screwed into the bolt u8, thereby attaching the attachment portion. Attach the ground mounting bracket 1 to u9.

  In addition, the bolt 2 is inserted into a through hole 1a formed in the upper end portion of the ground mounting bracket 1 and a through hole (not shown) formed in the vertical portion u10 ′ of the substantially inverted L-shaped ground plate u10. Then, the ground plate u10 is attached to the upper end portion of the attachment portion u9 by screwing the nut 3 into the bolt 2.

  In the conventional safety device H described above, the plug-in protector S is attached to the terminal device U by inserting the line terminal f of the plug-in protector S into the terminal portion u7 of the terminal device U. However, in this invention, it attaches to the grounding board u10 attached to the upper end part of the ground attachment metal fitting 1. The attachment of the plug-in protector S to the ground plate u10 attached to the upper end portion of the ground attachment fitting 1 is the same as the conventional safety device H described above. That is, a driver is applied to the head b1 of the bolt b inserted through the through hole s1 of the plug-in protector S, the bolt b is pressed downward against the coil spring y, and the bolt b is rotated. The bolt b is screwed into a nut n fixed to the horizontal portion u10 ″ of the ground plate u10 attached to the upper end portion of the ground attachment fitting 1 to thereby connect the ground plate u10 attached to the upper end portion of the ground attachment fitting 1. In addition, the plug-in protector S is attached.

  Reference numeral 4 denotes a connection member. The connection member 4 has a flexible lead wire 4a, and a detachable connector 4b is attached to one end of the lead wire 4a, and the lead wire 4a. A receptacle 4c is attached to the other end.

  The receptacle 4c of the connecting member 4 described above is inserted into the terminal portion u7 to which the line terminal f of the plug-in protector S can be inserted, and the connector 4b of the connecting member 4 is provided on the upper surface of the terminal device U. The plug-in protector S is configured to be connected to the terminal device U by connecting to the line terminal f of the plug-in protector S.

  The other terminal board terminals u2 and u3 to which the plug-in protector S is not connected are connected to an electric line or a signal line.

  As described above, the earth plate u10 is attached via the earth attachment fitting 1 attached to the attachment portion u9 formed in the insulating case u1 of the terminal device U, and the plug-in protector S attached to the earth plate u10. Is configured to be connected to the terminal device U via the connection member 4, the receptacle 4 c of the connection member 4 can be inserted into any terminal portions u 4 to u 7 provided in the terminal device U. Therefore, the wiring of the electric circuit and the signal circuit can be changed without causing the disconnection of the line.

  As described above, the earth plate u10 is attached via the earth attachment fitting 1 attached to the attachment portion u9 formed in the insulating case u1 of the terminal device U, and the plug-in protector S attached to the earth plate u10. Is configured to be connected to the terminal device U via the connection member 4, the receptacle 4 c of the connection member 4 can be inserted into any terminal portions u 4 to u 7 provided in the terminal device U. Therefore, in the case of a security device in which a plug-in protector has already been added to the terminal device, from the configuration or arrangement of the ground plate arranged in the terminal device, to any terminal board terminal of the terminal device, The problem that a plug-in protector cannot be inserted can be solved.

FIG. 1 is a front view of the security device of the present invention. FIG. 2 is a perspective view of a ground mounting bracket constituting the security device of the present invention. FIG. 3 is a front view of a conventional security device.

Explanation of symbols

H ・ ・ ・ ・ ・ ・ ・ ・ Protection device S ・ ・ ・ ・ ・ ・ ・ ・ Plug-in protector U ・ ・ ・ ・ ・ ・ ・ ・・ Terminal device b, 2, ... Bolt e ... Earth terminal fitting n, 3, ...・ ・ Nut s ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Case y ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Coil spring u1 ・ ・ ・ ・ ・ ・ ・ ・Insulation case u2, u3 ... Terminal board terminals u4, u5, u6, u7 ... Terminal part u9 ... Installation part u10 ...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Earth plate 1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Earth mounting bracket 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Connecting member

Claims (1)

  Attach the ground plate via the ground mounting bracket attached to the mounting part formed on the insulation case of the terminal device, and connect the plug-in protector attached to the ground plate to the terminal device via the connection member. A security device characterized by being configured to do so.

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