JPH044380Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a communication subscriber protector used at an indoor lead-in point of a communication line, an in-house branch point, etc.

[Prior Art] This type of communication subscriber protector has a pair of insertion pieces extending from a terminal piece at the bottom of the terminal provided on an insulating base, as shown in Japanese Utility Model Application No. 60-28430 of the present applicant. It had a structure in which it was inserted into a mounting part and locked and attached, and the male screw was attached to the pea boss provided on the terminal piece by tapping.

[Problem to be solved by the invention] However, in the above terminal mounting structure,
The set screw must be tapped through the pea boss of the terminal piece. Therefore, when this structure is used as a screw terminal, the insulating base tapping portion deteriorates due to repeated use. In addition, deterioration of the peaboss portion was unavoidable, so it could not be implemented as a terminal structure. or,
The high cost due to peaboss molding was unavoidable.

It was developed in 1988 as a device for repeated use.
In No. 193475, an insulating base is provided with a hexagonal hole and a locking protrusion, a nut is dropped into the hexagonal hole, a terminal insertion piece is engaged with the locking protrusion, and a set screw is screwed into the nut from above the terminal. A structure for matching is disclosed.

Therefore, the present invention is a further development of the above-mentioned screw mounting structure for use in subscriber protectors, and particularly aims at simplifying the earth terminal structure.

[Means for Solving the Problems] To solve the above object, the communication subscriber protector according to the present invention has on the front side of the insulating base a line for left and right lines surrounded by frames of upper left and right and lower middle. The block and the earthing block are protruded, and
A pair of lightning arrester mounting holes are formed between these blocks and the lower horizontal receiving frame, each block is provided with a nut rotation prevention mounting part, and the track block has a track terminal on the inside of the frame. The locking part of the piece is provided in the shape of a hole, and the upper and lower frames are cut out,
The grounding block has a top surface that communicates with the grounding wire insertion hole of the receiving frame at a different level, and a hole-shaped locking part for the grounding terminal piece is provided in the receiving frame. The insertion pieces of the line terminal piece and the ground terminal piece are inserted into the locking part, and a set screw is screwed into the nut, and the line terminal piece has a spring property between the insertion pieces and is attached to the lower frame. A grounding contact facing the lightning arrester mounting hole from the notch is formed in a curved manner, and the grounding terminal piece has a substantially U-shaped flat plate as a whole, and is raised from between the U-shaped grounding contact plate along the upper surface of the receiving frame portion and attached to the upper surface of the block. The terminal piece is provided with a terminal piece provided on the terminal piece.

[Operation] Drop the nut into the anti-rotation attachment part of each block on the insulating base.

By positioning the line terminal piece on the line block, inserting the insertion piece into the locking part and engaging it, and simultaneously threading the setscrew into the nut, the line terminal piece can be inserted from the notch in the lower frame to the upper part of the lightning arrester mounting hole. A curved earth contact piece is exposed.

Next, when the ground terminal piece is inserted horizontally along the receiving frame part, the insertion piece is locked in the engaging part of the receiving frame part, so that the set screw is screwed into the nut. As a result, the terminal piece is located on the top surface of the block so that it is on the same level as the ground insertion hole, and a U-shaped ground contact plate is placed below the lightning arrester mounting hole, thereby forming a subscriber protector. Ru.

[Example of the invention] The drawings illustrate an example of the device implemented in a subscriber protector for communication, and FIG. 1 is an exploded perspective view of the same, FIG. 2 is a perspective view of the installed state, and FIG. 3 is a ground wire installed state. FIG. 4 is an enlarged plan view for explaining, and FIG. 4 is an enlarged sectional view for explaining the communication line attachment state.

The subscriber protector consists of an insulating base 1 and a lid 2, and the insulating base 1 is provided with a line terminal 3 and a ground terminal 4. Each terminal 3, 4 is provided with a detent mounting part 5 and a locking part 6, 7 on the insulating base 1, and when a nut 8 is dropped into the detent mounting part 5 from one direction, the locking part 6 , 7, the insertion pieces 11, 12 of the terminal pieces 9, 10 are inserted and engaged, and the set screw 13 is screwed into the nut 8 from these pieces.

As described above, on the front surface of the insulating base 1, blocks 20 and 21 are arranged protrudingly between the upper left and right and between these lower parts, and between the left and right track blocks 20 and 20 and the lower receiving frame part 22. A plurality of lightning arrester mounting holes 23 are formed which are separated by grounding blocks 21. The above block 20,
21 has the detent mounting portion 5 formed in a hexagonal groove shape at the center surrounded by frames 24 and 25, and the left and right track blocks 20 have the locking portions 6 on both upper and lower sides of the detent mounting portion 5. are formed in the shape of punched holes, and the upper and lower frames 24 of these locking portions 6 are provided with notches 26 and 27.

In addition, the grounding block 21 has left and right frames 25, 2.
The upper surface surrounded by 5 is the left and right track block 20,
20, and the upper surface communicates with the ground wire insertion hole 28 of the receiving frame portion 22 at a different level.
The locking portion 7 is located near the ground wire insertion hole 28.
is provided in the shape of a hole in the receiving frame portion 22, 3 in the figure.
0 is a communication insertion port that opens upward between the left and right track blocks 20, 20 from the bottom of the receiving frame 22 through the back side of the grounding block, 31 is a mounting plate for the wall, and 32 is a mounting plate 31 This is the mounting hole.
Further, 33 and 34 are protrusions at the center of the upper edge of the insulating base 1, and 35 is a protrusion on the inside of the lid body 2.

Further, the terminal piece 9 has a substantially rectangular seating portion 40.
and the pair of insertion pieces 11a, 1 which are bent downward from both sides of the seating portion 40 and have spring properties.
1b, and a ground contact 41 which is curved and formed between one of the insertion pieces 11b and has a spring property. The grounding terminal piece 10 is composed of an earthing contact plate 42 whose entire surface is a U-shaped flat plate, and a terminal piece 43 which stands up from between the U-shapes.

To assemble the line terminal 3 based on the above configuration, place the insulating base with the front surface facing upward, drop the nuts 8 into the detent mounting part 5 from above, and then insert them into the locking part 6 from above. When the pieces 11a and 11b are pushed in, the insertion pieces 11a and 11b engage in male and female engagement within the holes of the locking portion 6. Therefore, the terminal piece 9 is attached with the nut 8 prevented from rotating, and in this state, the seating portion 4
0 is located inside the frame 24 of the left and right blocks 20. Thereafter, if necessary, the washer 14 is placed from above, and the set screw 13 is screwed into the nut through the square through holes 15 and 17. In the installed state, the ground contact 41 is inserted into the arrester mounting hole 23 from the notch 27 of the frame 20.
is coming.

The ground terminal 4 is connected to the U-shaped ground contact plate 42 after dropping the nut 8 onto the detent mounting part 5 from above.
When the insertion piece 12 is inserted downward into the locking groove 29 of the lightning arrester mounting hole 23, the insertion piece 12 is locked and attached to the locking portion 7. In the installed state, the seating part 10 is attached to the nut 8.
Since it is located on the upper surface of the nut 8, it is only necessary to screw the set screw 13 into the nut 8. Terminal piece 43 in installed state
With a thickness of , the ground wire insertion hole 28 and the ground contact plate 42 are located on the same seat surface, and at the same time, the ground contact plate 42 is located below the lightning arrester mounting hole 23.

According to the above configuration, the mounting plate part 31 is brought into contact with a wall surface or the like and fixed with screws or the like through the mounting hole 32, and the communication line C is inserted through the communication line insertion port 30 and pulled out from above the left and right blocks 20, 20. . Insert the communication cable core c into the lower surface of the washer 14 of the set screw 13 that has been loosened in advance, and tighten the set screw 13. If the ground wire is inserted through the ground wire insertion port 28, it will come into contact with the seating portion 43 on the same surface, so it is only necessary to tighten the set screw 13. Furthermore, when the lightning arrester A is installed in the lightning arrester mounting hole 23 and the lid body 2 is placed on the base 1, the protrusions 33 and 34 are inserted between the lid body protrusions 35 and the lightning arrester A is installed without play, and the work is completed.

[Effects of the Invention] As explained above, the present invention provides the following effects.

If you insert the line terminal piece and the ground terminal piece into the upper left and right line blocks and the lower intermediate ground block and screw them together, the ground contact piece will come out from the cutout of the line block to the upper part of the lightning arrester mounting hole. Since the ground contact plate along the receiving frame portion is located below the lightning arrester mounting hole, the lightning arrester mounting portion can be formed extremely easily.

The ground terminal piece consists of a U-shaped ground contact plate and a terminal piece that will be raised up and placed on the top of the block, so you can easily make a ground connection by simply attaching the ground wire to the terminal piece. The terminal structure could be simplified.

By attaching the ground terminal piece, the ground insertion hole and the seat surface can be made substantially on the same plane, allowing accurate ground connection.

[Brief explanation of the drawing]

The drawings illustrate an example of a subscriber protector for communications, where FIG. 1 is an exploded perspective view of one embodiment, FIG. 2 is a perspective view of the installed condition, and FIG. 3 illustrates the ground wire installed condition. FIG. 4 is an enlarged sectional view illustrating the state in which the communication line is attached. 1...Base, 2...Lid, 3...Line terminal,
4... Earth terminal, 5... Detent mounting part, 6,
7... Locking part, 8... Nut, 9, 10... Terminal piece, 11, 12... Insert piece, 13... Set screw,
20,21...Block, 24,25...Frame, 2
6, 27...Notch, 28...Ground wire insertion port, 4
0,43...Seating part, 41...Earth contact, 4
2...Earth contact plate, A...Surge arrester.

Claims (1)

[Scope of Claim for Utility Model Registration] A subscriber protector for communications comprising an insulating base and a lid, and the insulating base is provided with a pair of line terminals and a ground terminal, comprising: a front surface of the insulating base; Left and right railroad blocks and a grounding block surrounded by a frame are protruded from the upper left and right and lower intermediate portions, and a pair of lightning arrester mounting holes are provided between these blocks and the lower horizontal receiving frame. Each of the above-mentioned blocks is provided with a nut rotation prevention mounting part, and the track block has a hole-shaped locking part for a track terminal piece inside the frame, and the upper and lower frames are cut out, and a grounding part is provided. The upper surface of the block communicates with the ground wire insertion hole of the receiving frame part at a different level, and the receiving frame part is provided with a hole-shaped locking part for the ground terminal piece, and as the nut is dropped into the detent mounting part, each locking part is inserted. The insertion pieces of the line terminal piece and the ground terminal piece are inserted into the part, and a set screw is screwed into the nut, and the line terminal piece has a spring property from between the insertion pieces and is inserted into the notch of the lower frame. A grounding contact facing the lightning arrester mounting hole is formed in a curved manner, and the grounding terminal piece has a substantially U-shaped flat plate shape as a whole and is provided on the top surface of the block by standing up from between the U-shaped grounding contact plate and the grounding contact plate along the top surface of the receiving frame. A subscriber protector for communications, characterized in that it is equipped with a terminal piece that is connected to the terminal.