JP3315548B2 - Security equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security device for protecting electric equipment on a communication line or the like from a surge or the like entering the communication line or the like.

[0002]

2. Description of the Related Art Conventionally, a surge absorbing element for absorbing a surge or the like is provided in a case, and a plug-in protector having a plug derived from the case and a plug of the plug-in protector are inserted and attached. 2. Description of the Related Art A security device is known which has a plug support and a combination of a terminal device having a jack or the like for connecting a surge absorbing element of a plug-in protector and a line.

[0003]

In the above-mentioned conventional safety device, the plug drawn out from the lower surface of the case of the plug-in protector is inserted into the plug support provided in the case of the terminal device, The lower surface of the case of the plug-in protector and the upper surface of the case of the terminal device are simply brought into surface contact, and the connection between the plug-in protector and the terminal device is made by the plug of the plug-in protector and the plug of the terminal device. Since the connection is made only by contact with the bearing, the connection strength between the plug-in protector and the terminal device is weak. Therefore, the terminal or the like is easily damaged by vibration or impact, or the plug-in protector and the terminal device are not connected. There is a problem such as inducing a joint failure with the metal.

[0004] It is an object of the present invention to solve the above-mentioned problems of the conventional security device, to improve the reliability of the work of attaching the plug-in protector to the terminal device and to improve the workability thereof, and to improve the plug-in security. It is an object of the present invention to provide a security device that facilitates connection of a container to a ground terminal.

[0005]

In order to achieve the above-mentioned object, the present invention provides a security device comprising a terminal device and a plug-in protector. The bulged portion fitted to the concave portion and from which the line terminal is led is protruded from the plug-in protector, and further ,
The upper surface of the terminal device in which the fitting recess is formed and the lower surface of the plug-in protector in which the bulging portion protrudes are brought into surface contact with the through-hole formed in the plug-in protector,
An upwardly urged bolt, which is screwed into the ground plate attached to the terminal device, is inserted therethrough.

[0006]

FIG. 1 is a front view of a security device of the present invention in which a plug-in protector is attached to a terminal device, and FIG. 2 is a plan view of a plug-in protector constituting the security device of the present invention. The security device of the present invention will be described with reference to FIG. 3 which is a front view showing the internal structure of the plug-in protector constituting the security device of the present invention. It is not limited to the example.

As shown in FIG. 1, the safety device H of the present invention comprises a plug-in safety device S containing a surge absorbing element and the like, and a terminal device U having a terminal portion, a ground terminal and the like. ing.

[0008] The plug-in protector S is formed by joining open surfaces s1 'and s2' of two half cases s1 and s2 formed of an insulating material and having substantially the same structure and open on one side. Divided case s, and the divided case s has two spaces c1 and c with a common wall s3 interposed therebetween.
2 are formed.

The vertical wall s4 facing the common wall s3 of the one space portion c1 of the split type case s faces downwardly toward the common wall s3.
3 has a curved surface s4 'that is gently curved, a projection s5 is formed on an inner wall s4 "below the curved surface s4', and an inner wall s3 'on the side of the vertical wall s4 of the common wall s3. A locking piece s6 formed with a substantially vertical through hole s6 'is formed at a substantially central portion of the half case s1 of the divided case s. A projecting piece s8 is provided below the locking piece s6.

The lower surface s of the horizontal wall s9 below the split case s
A bulge s10 having a vertical hole s10 'is protruded from 9'. Although the embodiment shown in FIG. 3 shows an example in which the vertical wall s4 having the curved surface s4 ′ and the one side wall s10 ″ of the bulging portion s10 form a common surface, The swelling portion s10 can also be bulged rightward in Fig. 3. The s11 is a vertical hole s of the swelling portion s10.
It is a protrusion protruding from the inner wall of 10 '. Also, s12
Is a support piece having a predetermined height protruding from the common wall s3 at a predetermined distance from the horizontal wall s9. s13 is
This is a through hole provided at the lower end of the common wall s3, into which a ground terminal fitting described later is inserted.

In FIG. 3, another space c2 located on the right side of the common wall s3 has a through hole s1 extending in the vertical direction.
4 and the through hole s14 is formed as the through hole s1.
4, an upper hole s15 having an inner diameter slightly larger than the outer diameter of the head of the bolt, an intermediate hole s16 having an inner diameter smaller than the inner diameter of the upper chamber s15, and a bolt can be inserted, and the inner diameter of the intermediate hole s16 can be inserted. The lower hole s17 has a smaller inner diameter. Further, a flange s15 'is provided slightly below the opening of the upper hole s15 toward the inside of the upper hole s15.

Next, the electric components and the like and the storage means for the electric components and the like disposed in the split case s will be described.

Reference numeral a denotes a lightning arrester having electrodes a1 and a2 in the vertical direction, sandwiched between a common wall s3 and a support piece s12 projecting from the common wall s3 at a predetermined distance from the horizontal wall s9. .

In FIG. 3, v is a varistor having a substantially circular front shape housed in the space c1 located on the left side of the common wall s3 in FIG. 3, and the varistor v is a curved surface s of the vertical wall s4.
4 ′, and the lower end of the bulging portion v2 of the varistor v from which one lead wire v1 of the varistor v is led out projects to the inner wall s4 ″ below the curved surface s4 ′. It is mounted on the provided projection piece s5.

One lead wire v1 of the varistor v is attached to one end of a line terminal f as a plug portion by an appropriate fixing means such as soldering or crimping. Line terminal f
A notch f1 is formed in a substantially central portion on one side of the swelling portion s10 of the split type case s in the notch f1 of the line terminal f.
The line terminal f is disposed in the vertical hole s10 'of the bulging portion s10 by fitting the convex portion s11 protruding from the inner wall of the vertical hole s10'. It is configured not to move significantly with respect to the mold case s.

D is placed on the electrode a1 above the lightning arrester a and extends along the common wall s3 to the locking piece s6 protruding from the inner wall s3 'of the common wall s3 on the side of the vertical wall s4. A substantially L-shaped conductive connection plate extending, and a vertical portion d of the connection plate d
The other end of the lead wire v3 of the varistor v is inserted into a hole formed in the bent portion d2 formed at the upper end of the varistor v, and is attached by solder or the like. An end of the line v3 is a through hole s6 ′ formed in the locking piece s6.
Has been inserted. As described above, the lead v3 of the varistor v and the electrode a1 of the lightning arrester a are connected via the conductive connection plate d.
Is connected. Further, the lead wire v3 is sandwiched by a protruding piece s8 provided on the bottom s7 of the half case s1 constituting the split case s and a similar protruding piece provided on the bottom of the other half case s2. It is configured as follows. Preferably, the common wall s3 is provided with a vertically long concave portion or two parallel vertical ribs into which the connection plate d is inserted so as to prevent the connection plate d from moving in the horizontal direction.

E is disposed on the side wall s9,
This is a ground terminal fitting that is inserted into the through hole s13 provided at the lower end of the common wall s3 and extends to the vertical wall s18 that forms the space c2. The lower electrode a2 of the lightning arrester a is in contact with the ground terminal metal fitting e located on the space c1 side,
The lightning arrester a is a horizontal portion d3 of a substantially L-shaped conductive connection plate d.
And the ground terminal fitting e. In addition, the lightning arrester a
Is preferably urged toward the earth terminal fitting e. Further, the ground terminal metal fitting e corresponding to the lower hole s17 of the through hole s14 has a through hole e through which a bolt described later can be inserted.
1 is drilled.

In the through hole s14 constituting the space c2,
The bolt b is inserted, and the bolt b has an upper hole s1.
A washer w that is in contact with the lower surface of the fifth flange s15 'is inserted. Lower surface of washer w and through hole s14
A coil spring y is disposed between the intermediate hole s16 and the stepped portion s19 formed at the boundary between the lower hole s17 so as to cover the periphery of the bolt b, and urges the bolt b upward. are doing. Further, as shown in FIG. 3, the bolt b is connected to the washer w by the flange s1 of the upper hole s15.
The lower end of the bolt b is formed so as to be in a state of being retracted from the lower surface of the ground terminal e when in contact with the lower surface of 5 ′.

As shown in FIG. 1, the terminal device U
Has an insulating case u1, in which known terminal board terminals u2 and u3 are disposed, and a varistor v, a lightning arrester a and the like disposed on the plug-in protector S. Known terminal portions u4 and u5 for connecting a surge absorbing circuit made of to the outside are provided.

U6 is a bulging portion s1 of the split case s of the plug-in protector S provided on the upper surface u7 of the terminal device U.
0 and a fitting recess having a depth capable of accommodating the line terminal f, and an inner diameter of at least an upper portion of the fitting recess u6 is formed to be substantially the same as an outer diameter of the bulging portion s10 of the split mold case s;
The depth of this portion is formed slightly deeper than the length of the bulging portion s10 of the split mold case s. Then, the bulging portion s10 of the split type case s constituting the plug-in protector S is fitted into the fitting concave portion u6 of the terminal device U, and the upper surface u7 of the terminal device U and the horizontal wall s9 of the split type case s. Lower surface s
The terminal device U is connected to the terminal device U so that the plug-in protector S is attached to the terminal device U to assemble the security device H. In addition, as shown in FIG.
It is preferable that the fitting concave portion u6 is formed by a large-diameter portion u6 ′ into which the bulging portion s10 of the split mold case s is fitted and a small-diameter portion u6 ″ in which the line terminal f is accommodated.

The end u2 'of the terminal board terminal u2 is disposed upward in the fitting recess u6 of the terminal device U, and the end u2' of the terminal board terminal u2 is fitted to the terminal device U. It is configured to be inserted into the concave portion f2 of the line terminal f derived from the bulging portion s10 fitted in the joint concave portion u6.

A mounting portion u9 to which a bolt u8 is attached is formed in the insulating case u1 of the terminal device U. The bolt u8 is attached to the vertical portion u of a substantially inverted L-shaped ground plate u10.
10 ′ is inserted through the through hole, and the bolt u
8 by screwing a nut u11 to the ground plate u1.
0 is attached. Horizontal part u10 "of ground plate u10
When the plug-in protector S is attached to the terminal device U, the terminal device U comes into contact with the ground terminal fitting e disposed on the horizontal wall s9 below the split mold case s, and the ground terminal fitting e.
Horizontal portion u of the ground plate u10 at a position corresponding to the through hole e1
10 "is provided with a screw hole u12 in which a tap screw is formed. Instead of forming the screw hole u12, a through hole is formed in the horizontal portion u10" of the ground plate u10. A nut u13 can be fixed to the horizontal portion u10 ″ of the ground plate u10 so as to match the above-mentioned through hole. Of course, together with the screw hole u12, the nut u13 is further provided.
Can also be fixed. The above bolt u8 and nut u
A ground terminal (not shown) for grounding the ground is attached to 11.

As described above, the fitting recess u of the terminal device U
6, the bulging portion s10 of the split case s constituting the plug-in protector S is fitted, and the upper surface u7 of the terminal device U and the lower surface s9 'of the horizontal wall s9 of the split case s are brought into surface contact. As a result, the plug-in protector S is connected to the terminal device U.
Is attached, and the security device H is assembled. Then, a screwdriver is applied to the head b1 of the bolt b inserted into the through hole s14 of the plug-in safety device S, and the bolt b is pressed downward against the coil spring y. At the same time, the bolt b is rotated so that the bolt b is moved to the horizontal portion u1 of the ground plate u10.
By screwing into the screw hole u12 engraved at 0 ", the attachment of the plug-in protector S to the terminal device U is completed as shown in FIG.
When the nut u13 is fixed to the horizontal portion u10 ″ of the bolt 10, the bolt b is screwed to the nut u13.

When removing the plug-in protector S from the terminal device U, the bolt b is connected to the horizontal portion u of the ground plate u10.
The bolt b and the horizontal portion u10 ″ of the ground plate u10 are rotated by being removed from the screw hole u12 engraved at 10 ″.
When the screw engagement with the screw hole u12 engraved in is released, the lower end of the bolt b moves upward at least to a position where it does not come into contact with the ground plate u10 by the elastic force of the coil spring y.

As described above, the terminal device U and the plug-in protector S are fitted in the fitting recess u6 of the terminal device U with the bulging portion s10 of the split case s constituting the plug-in protector S. Since the connection is made by connecting the plug of the plug-in protector and the plug of the terminal device as in the conventional security device, the connection state is strong. u7 and the lower surface s9 'of the side wall s9 of the split case s are in surface contact,
The movement of the plug-in protector S with respect to the terminal device U can be more reliably suppressed. Further, the bolt b inserted into the through hole s14 of the plug-in protector S was screwed into the screw hole u12 formed in the horizontal portion u10 ″ of the ground plate u10 attached to the terminal device U. The connection between the terminal device U and the plug-in protector S becomes stronger.

[0026]

Since the present invention is configured as described above, it has the following effects.

The terminal device and the plug-in protector are connected by fitting the bulging portion of the plug-in protector into the fitting concave portion of the terminal device, so that the plug-in protector is firmly attached to the terminal device. Therefore, it is possible to prevent damage to the terminal and the like due to shock, vibration, and even minute vibration, or poor connection between the terminal device and the plug-in protector.

Since the upper surface of the terminal device is in surface contact with the lower surface of the plug-in protector, the movement of the plug-in protector with respect to the terminal device can be more reliably suppressed. Furthermore, since the bolt inserted into the through hole of the plug-in protector was screwed into the screw hole engraved on the ground plate attached to the terminal device, the connection between the terminal device and the plug-in protector was established. , It will be more robust.

When attaching the plug-in protector to the terminal device, the lower end of the bolt inserted into the through-hole of the plug-in protector contacts the ground plate provided on the terminal device by the elastic force of the coil spring. Since the plug-in protector is moved upward so as not to be in contact with the terminal device, the plug-in protector can be quickly attached to the terminal device.

[Brief description of the drawings]

FIG. 1 is a front view of a security device of the present invention in which a plug-in protector is attached to a terminal device.

FIG. 2 is a plan view of a plug-in protector constituting the security device of the present invention.

FIG. 3 is a front view showing the internal structure of a plug-in protector constituting the security device of the present invention.

[Explanation of symbols]

 H Security device S Plug-in protection device U Terminal device a Lightning arrester b: Bolt e: Ground terminal fitting s: Split type case v: Varistor y: ··········· Coil spring s10 ··········································· Recessed recess

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 73/20 H01C 7/12 H01R 9/22 H01R 13/652

Claims (1)

(57) [Claims] 1. A terminal device having a fitting recess formed therein,
It is fitted to the fitting recess, and, projecting from the bulging portion the line terminal is derived to the plug-in protector, further, the Hamago凹
The upper surface of the terminal device where the portion is formed, and the
With the lower surface of the plug-in protector
In the through hole formed in the plug-in protector,
Upwardly biased to screw into a ground plate attached to the device
A security device comprising a terminal device and a plug-in protector, wherein a bolt is inserted .