JPH04550Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a telephone subscriber that doubles as a test block, which is used for connection wiring of telephone subscriber lines and can easily test or inspect the contact status of telephone line circuits. Regarding wire terminal boxes.

[Conventional technology and its problems]

A wide variety of conventional terminal boxes for telephone lines have been proposed, but most of them have problems in that they are not dust-proof or waterproof, and they can easily be connected by unauthorized persons.

Also, when inspecting or testing telephone subscriber lines, disconnect the wires from the terminals in the terminal box,
Alternatively, it is necessary to peel off the skin of the wire and then inspect it with a test piece, and then connect the wire back to the terminal after inspection and repair, which is very time-consuming, and may also confuse the wiring inside the box or disconnect the wire. There were problems such as incorrect connections and poor connections.

[Means for solving problems]

According to this invention, the terminal box has a pull-out sealed waterproof structure consisting of the box body, a terminal block, and an outer cover, and a terminal block attached to the center of the box body is installed inside the box. A protrusion extending in the axial direction is provided at the center of the upper surface, and two rows of terminal pieces are arranged on the upper and lower surfaces of a low block formed on both sides of the protrusion, respectively, and the upper surface of the protrusion is The block is characterized in that a plurality of test holes are provided in the concave groove formed in the center of the lower surface of the block, each facing the insertion opening for each pair of lower terminal pieces.

[Effect]

With this configuration, after wiring central office lines and telephone subscriber lines to the terminal box, the dust-proof and waterproof structure of the box allows the wiring to remain in a good connection state for a long period of time. , the case can be easily removed to completely expose the block for easy inspection or wire connection, and when testing connection and call status, insert the test piece leg into the test hole. It is very convenient because it allows you to test the wires right away, and there is no need to remove the wires from the terminals of the terminal block or peel the wires.

〔Example〕

An embodiment of this invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, the terminal box according to the present invention is composed of three members: a box body 1, a terminal block 2, and an outer cover 3.

The box body 1 is an insulating box-shaped member that is open at the top and has notches 10 that are cut vertically into both side walls 1a to form recesses. A rectangular recessed groove 11 for attaching a terminal block is formed inside the terminal block by integrally molding at least two screw mounts 12 and a plurality of partition strips 13 extending in parallel in the horizontal direction. A wire storage groove 110 is formed between the both side walls 14 and the both side walls 15 of the box body 1.
Box body mounting holes 111 are provided at both ends of the bottom wall within the storage groove 110. Further, at one end of the box body 1, a cylindrical wire introduction hole 17 for introducing a central office wire or cable into the outer surface, and a rectangular cylindrical wire introduction hole 18 for introducing a bundle of subscriber wires are protruded at intervals. An end wall 16a having one end and a closed end wall 16b having arcuate corners at the other end are integrally molded with the box body 1, respectively. Incidentally, on the bottom outer wall of the box body 1, there is formed a protruding surface 19 extending in the length direction, which forms the bottom surface of the recessed groove 11 (see FIGS. 4 to 4).
(See Figure 5).

As shown in FIGS. 1 to 4, the terminal block 2 has a rectangular protrusion 24 extending in the length direction at the center.
An insulating block main body 20 having a convex end face and two rows of terminal screws 21a and 21b are attached to the upper and lower surfaces of the main body so as to correspond vertically to both sides of the protrusion 24 of the block main body 20. The terminal 23 is composed of a plurality of upper and lower terminal pieces 23a and 23b.

On the upper surface of the block main body 20, test holes 25 are provided in series in pairs of two test holes 25 for testing the connection relationship between the corresponding terminal pieces 23a and 23b, and two test holes 25 are provided at appropriate positions. A main body mounting hole 27 is provided, and the block main body 20 is mounted on the concave groove 11 of the box main body 1 by inserting a screw 26 into the mounting hole 27 and screwing it into the screw hole of the screw mounting base 12 of the box main body 1. ing. At the center of the lower surface of the block body 20, there are provided a plurality of rectangular hole-shaped cavities 20a with a slightly large diameter, the upper end of which communicates with the lower end of the test hole 25, and the lower end of which is open to the lower surface. 20a is separated by a partition plate 29a.

The upper terminal piece 23a is, for example, a rectangular conductive metal piece having a terminal screw attachment hole in the center, and is provided between a plurality of integrally molded partition plates 28 at regular intervals on both sides of the upper surface of the block body 20. Recess 28
It is fixed inside a with screws 21a, and the lower terminal piece 2
3b is an L-shaped conductive metal piece with one end having a terminal screw mounting hole in the center, and the other end 231 extending upward and having a contact 232 in the center of its outer surface. As shown, screws 2 are inserted into recesses 28b formed between a plurality of two-part partition plates 29 integrally formed at regular intervals on both sides of the lower surface of the block body 20.
It is installed with 1b. Specifically, terminal piece 2
3a and 23b are screwed to both ends of the conductive screw tube 22 inserted through the block body 20 so that both ends are located in the upper and lower recesses 28a and 28b using terminal screws 21a and 21b. Up,
It is attached within the lower recesses 28a and 28b. As shown in FIG. 4, the plurality of pairs of lower terminal pieces 23b, which are attached on the left and right sides, are formed in a substantially x-shape so that their free ends 231 face each other and the contacts 232 of each pair are in contact with each other. As well as above,
The lower terminal pieces 23a and 23b maintain electrical connection through a conductive screw tube.

The block main body 20 installed in the box main body 1 in this way is constructed by inserting both legs of the insulating test piece 4 into a pair of test holes 25 as shown in FIG. The electrical contact relationship can be severed by pushing open the contact point 232 of the terminal piece 23b against the elastic force of the terminal piece 23b. In addition, the test hole 25 of the pair of terminal pieces 23b
Since the opening formed by the upper end facing the test piece 4 is formed in an inverted V-shape, both legs of the test piece 4 can be easily inserted. Furthermore, after being attached to the box body 1, two partition plates 29 are provided on the bottom surface of the block body 20.
The grooves between the two fit into the box body 1 so as to sandwich each partition strip 13 provided in the groove 11 , and the outer ends of the partition plates 29 fit into the box body 1 so as to sandwich the partition strips 13 provided in the groove 11 .
4, the lower end of each terminal 23 is kept isolated and sealed, and is waterproof.
A dustproof effect can be obtained.

As shown in FIGS. 1, 4, and 5, the outer lid 3 has an opening on the lower surface and flanges 31 on both sides, and has a square cross-section with one end sealed and the other open. It is an insulating lid, and houses the assembly of the box body 1 and the terminal block 2 in a removable manner. This outer cover 3 has a structure that opens on the bottom surface, has elasticity made of its own synthetic resin material, and has a pull-out sliding fitting structure to fit and store the box body 1 with appropriate tightness, and has dustproof and waterproof effects. can be accommodated.

Next, how to install and use the terminal box of the present invention will be explained.

When installing the terminal box on the wall,
First, as shown in FIG. 6, a mounting plate 5 having a threaded cylinder 51 protruding from its surface corresponding to the mounting hole 111 of the box body 1 is mounted to the wall 6 with screws or nails 7, and then the screws 8 are screwed in. The box main body 1 is mounted on the top surface of the mounting plate 5 by screwing the wire into the threaded cylinder part 51 through the mounting hole 111 so that the wire introduction holes 17 and 18 face downward, and the wire is inserted into the box through the introduction holes 17 and 18. The central office line and subscriber line drawn into the terminal block 2 are connected to the terminal strips 23a arranged in one row on both sides of the terminal block 2, and the terminal strips 23a and the electrical connection are connected via the terminal screws 21a, 21b and the conductive screw tube 22. The central office line and the subscriber line are electrically connected by the lower terminal pieces 23a that are connected to each other coming into contact with each other, and the terminal block 2 is fitted into the groove 11 of the box body 1 with the screw 26. After that, the outer cover 3 is fitted onto the box body 1 from one end, and the box body 1 and the terminal block 2 attached thereto are stored inside the cover 3 in a sealed state. good.

In the terminal box assembled and attached to the wall in this manner, the central office line and the subscriber line are located in two groove-shaped spaces formed between the side walls 14 of the groove portion 11 and the side walls 1a of the box body 1, respectively. They are stored in an orderly manner and are pulled out downward through the introduction holes 18 and 17.

In this embodiment, the box body 1 of the terminal box is attached to the wall via the mounting plate 5, but the box body 1 can also be directly attached to the wall with screws without using the mounting plate 5.

[Effect of idea]

According to the present invention constructed as described above, the entire terminal box is structured to be dust-proof, waterproof, and moisture-proof, and each terminal is isolated by a partition plate, and the bottom surface of the terminal block is separated from the partition plate. The terminal block is tightly fitted into the groove of the box body so that the lower terminal piece is completely insulated and isolated by the partition strip and both side walls of the groove, and the opposing parts are in contact with the protrusion of the terminal block. A test hole is provided that communicates with the storage area of each pair of lower terminal pieces that electrically connect the central office line and the subscriber line, and a test piece having an insulating leg is inserted into the test hole. This has the advantage that the electrical connection can be interrupted by pushing open the contact portions of a pair of terminal pieces, and testing and inspection can be easily performed without removing the terminal screws.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Fig. 2 is a partially cutaway perspective view after assembly, Fig. 3 is a perspective view of the terminal block upside down, Fig. 4 is a sectional view taken along line A-A in Fig. 2, and Fig. 5 is a cross-sectional view of the terminal block of the present invention. FIG. 6 is a perspective view of the inverted state after assembly, and a partially cutaway end view showing the state of being attached to a wall. 1...Box body, 11...Concave groove, 13...
...Partition strip, 14... Concave groove side wall, 17, 18...
Wire introduction hole, 2...Terminal block, 21a, 21
b...Terminal screw, 22...Conductive screw tube, 23...
...terminal, 23a...upper terminal piece, 23b...lower terminal piece, 24...protrusion, 25...test hole,
28, 29... Partition plate, 3... Outer lid, 4... Test piece.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The center portions of both walls are formed slightly low, one end wall is provided with a central office line introduction hole and a subscriber introduction hole to separate them, and the other end wall is formed in a sealed manner. The box-shaped insulating box body has a concave groove for fitting a terminal block integrally formed in the center of the inner bottom surface, a protrusion extending in the length direction in the center of the block, and a protrusion on both sides of the protrusion. A terminal mounting recess partitioned into a plurality of parts by a plurality of widthwise partition plates is formed on the low-profile upper surface and the corresponding lower surface. In addition to attaching the side terminal pieces, a plurality of test holes arranged in a row are provided on the upper surface of the protrusion, and the lower ends of these test holes are connected to the upper ends of the plurality of lower terminal piece storage holes provided on the lower surface of the block. The upper and lower terminal pieces are electrically connected by a terminal screw and a screw tube, and the opposing ends of each pair of left and right lower terminal pieces extending into the storage hole are brought into contact with each other. The insulating terminal block has a letter-shaped insulating terminal block, one end and the bottom surface are open, the other end and the top surface are sealed, and there are flanges on both sides of the open bottom surface, so that it can be slid freely into the box body like a drawer. A terminal box for telephone subscriber lines consisting of an insulating outer cover that can be fitted together. (2) The utility model as set forth in claim 1, characterized in that the partition plate forming the lower terminal piece mounting recess provided on the lower surface of the terminal block is formed into a two-part partition plate with a gap in the middle. Terminal box for telephone subscriber lines. (3) Inside the terminal block fitting groove of the box body, when the terminal block is fitted into this groove, the width of the plural strips that the above-mentioned two-piece partition plate that partitions the lower terminal piece fits into this groove. A terminal box for a telephone subscriber line according to claim 1 of the utility model registration claim, characterized in that a directional partition strip is provided.