JPH05236631A - Connecting terminal box - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to change the connection without disconnecting (disconnecting) the connection at the connection point of the overhead telephone cable or the outdoor line. [Structure] In a connection terminal box that holds connection points for multiple pairs of telephone cables suspended imaginarily by a telephone pole, a cutout is provided in a part of the long side of the bottom plate, and an outdoor line is provided in this cutout. A hole to be inserted and a drop plate provided with a slit for introducing an outdoor wire are engaged with the hole and fixed by a holding plate. [Effect] The switching operation can be performed without interruption without affecting the transmission signal, and the switching connection operation can be labor-saving and the service can be improved.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is used to connect multiple pairs of overhead telephone cables. INDUSTRIAL APPLICABILITY The present invention is used to protect connection points of many pairs of telephone cables that are suspended overhead by utility poles. The present invention relates to a connection terminal box for executing connection change without disconnecting the overhead telephone cable at a connection point of the overhead telephone cable.

[0002]

2. Description of the Related Art FIG. 21 is an exploded perspective view showing the structure of a conventional connecting terminal box. The conventional connection terminal box has one rectangular bottom plate 1, a cover 2 attached to both long side portions of the bottom plate 1 to form a space above the bottom plate, and both short side portions of the bottom plate 1. Two side walls 3 attached so as to respectively close the openings of the space formed by the bottom plate 1 and the cover 2.
The cover 2 is made of a hard plastic material, the hinge 2c is formed between the top plate 2a and the side plate 2b of the cover 2, and the lower end of the side plate 2b of the cover 2 and the bottom plate 1 are provided. Both long side portions of the are formed in a detachable engagement structure. In addition, the bottom plate 1 has a rubber sheet part that allows an outdoor wire to be branched from an overhead telephone cable and connected to each building to be inserted. This rubber sheet part facilitates insertion of an outdoor wire and allows insertion of an outdoor wire. Cross-shaped cuts are made so that holes that are not closed will be blocked. Such a connection terminal box is disclosed in Japanese Utility Model Publication No. 1-27397 and is widely used in Japan. This conventional connection terminal box has an excellent structure that protects the connection point of the communication line from rain and snow and can perform connection work even during rain or snow.

[0003]

When connecting an outdoor line to an overhead telephone cable, the connection terminal box having the conventional structure as described above is inserted into the hole formed in the bottom plate in the cover case. Since the structure was such that the cover and the bottom plate were damaged or aged and it was necessary to replace the connection terminal box, it was necessary to disconnect the outdoor line once. I can't remove the old connection box that I used up to. In addition, a new connection terminal box cannot be installed until the outdoor line is connected. For this reason, it is necessary for the user to obtain an understanding in advance that communication cannot be performed temporarily, and therefore, including these works requires a substantially large number of man-hours. Furthermore, in recent years, not only telephone signals but also digital data signals for connecting computers to each other are often transmitted to telephone cables, and even if an attempt is made to obtain the consent of users in advance, communication becomes impossible. Is not allowed even if it is temporary, or even if it is allowed, it will be a very limited time such as night. In such a case, the connection terminal box cannot be replaced.

On the other hand, the connection of the overhead telephone cable requires a space for mounting a connecting tool or the like in a place where the scaffolding is bad, such as on a ladder. However, in the conventional structure described above, the bottom plate cannot be removed. There were drawbacks that it was difficult to attach tools, etc., connection work was difficult, and work efficiency was poor.

The present invention has been made in view of such a background, and it is possible to change the connection and the connection terminal box without disconnecting at the connection point of the telephone cable or the outdoor line, thus improving the work efficiency. An object is to provide a connection terminal box that can be used.

[0006]

SUMMARY OF THE INVENTION The present invention, in order to solve the above problems, provides an apparatus in which an outdoor wire drop portion of an overhead telephone cable is improved. That is, the bottom plate is provided with a bottom plate main portion formed of a hard plastic material having a cutout portion at a part of its long side portion, and a hole through which the cutout portion is detachably engaged and an outdoor wire is inserted. And a holding plate that holds the falling plate against the main portion of the bottom plate, and the pressing plate is provided in the hole provided in the drawing plate. It is characterized in that a slit for inserting an outdoor wire is formed in the hole with the plate removed.

The cutouts are provided so as to face both long side portions of the bottom plate, and the draw-down plate and the pressing plate are attached to the cutouts, respectively. A connecting string for connecting the two pull-down plates attached to the section, and a fixed metal fitting and a movable metal fitting for gripping a cable penetrating the side wall inside the cover in the vicinity of the side wall. Attached to the main portion of the bottom plate with screws from the outside of the bottom plate, and detachable between the lower ends of both side plate portions of the cover and both long side portions of the bottom plate and between both open ends of the cover and the side wall. It is desirable that the structure includes a freely formed engaging structure.

[0008]

When the outdoor line is connected to the overhead telephone cable, the outdoor line is inserted into the hole of the drop plate after opening the cover. This work can be performed in the same manner as the conventional structure without changing the work procedure. Alternatively, it is possible to connect the outdoor wire by pulling the outdoor wire into the case by removing the holding plate fitted in the cutout portion of the main portion of the bottom plate, and pushing the outdoor wire from the notch of the plate. To connect the overhead telephone cable to the outdoor line, connect the connector inside the cover with a tool not shown. In this case, since the bottom plate can be removed, sufficient space for tools can be secured.

When it becomes necessary to replace the entire connecting terminal box, the cover is first removed, then the holding plate is removed, and the outdoor wire is pulled out to the outside through the slit of the plate. This work can be performed without disconnecting (disconnecting) the telephone cable from the outdoor line. The connection terminal box can be mounted in the opposite way, and the bottom plate and the cover can be mounted by inserting the outdoor wire into the hole through the slit of the drop plate.

When connecting the overhead telephone cable, the pressing plate fitted in the notch in the bottom plate main part is removed,
Pull the outdoor wire to the outside through the slit in the drop plate.
Further, loosen the screws holding the main part of the bottom plate and the fixing plate to separate the fixing plate and the main part of the bottom plate, and pull the main part of the bottom plate in the short side direction (front side) to remove it. After that, attach tools to both sides of the connection point where you want to connect the overhead telephone cable, and connect the connector not shown in the figure. Removing the bottom plate makes it easier to install tools and improves the efficiency of connection work.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a perspective view showing a wiring state in a connection terminal box in an embodiment of the present invention, FIG. 2 is a perspective view showing an external structure of a connection terminal box in an embodiment of the present invention, and FIG. 3 is a connection terminal box in an embodiment of the present invention. Fig. 4 is an exploded perspective view showing the inside, Fig. 4 is an exploded perspective view showing the mounting structure of the bottom plate, the withdrawal plate, and the holding plate of the connection terminal box in the embodiment of the present invention, and Fig. 5 is a view of the connection terminal box in the embodiment of the present invention. 4 is an enlarged view of part A shown in FIG.

The connection terminal box according to the embodiment of the present invention includes one rectangular bottom plate 1, covers 2 attached to both long sides of the bottom plate 1 to form a space above the bottom plate 1, and the bottom plate 1.
Two side walls 3 attached to both short sides of the base plate 1 and the cover 2 so as to close the openings of the space formed by the bottom plate 1 and the cover 2, respectively, and the cover 2 is made of a hard plastic material. A hinge portion 2c is formed between the top plate portion 2a and the side plate portion 2b of the second cover 2, and lower ends of both side plate portions of the cover 2 and both long side portions of the bottom plate 1 are formed in a detachable engagement structure. A feature of the present invention is that the bottom plate 1 is detachably engageable with the bottom plate main portion 1a formed of a hard plastic material having a cutout portion 1b in a part of its long side portion and the cutout portion 1b. A drop plate 4 made of a soft plastic material and provided with a hole 4a through which an outdoor wire is inserted.
And a pressing plate 5 for pressing the withdrawal plate 4 against the bottom plate main portion 1a, and a hole 4a provided in the withdrawal plate 4
A slit 4b for introducing an outdoor wire is formed in the hole 4a in the state where the holding plate 5 is removed.

A cross-shaped cut 4e is provided in a hole 4a through which an outdoor wire of the drop-off plate 4 is inserted, and a notch 1b.
Has a structure in which it is provided so as to face both long side portions of the bottom plate 1, and the draw-down plate 4 and the pressing plate 5 are attached to each of the cutout portions 1b, and the cutout portions 1b are attached to the opposite cutout portions 1b. A connecting string 6 for connecting the two drop-off plates 4 is provided, and a fixed metal fitting 7 for holding an overhead telephone cable penetrating the side wall 3 and a movable metal fitting are provided inside the cover 2 close to the side wall 3, and the fixed metal fitting is provided. 7 are attached to the bottom plate main portion 1a by screws 8 which are tightened from the outside of the bottom plate 1, and are provided between the lower ends of both side plate portions of the cover 2 and both long side portions of the bottom plate 1 and both open ends of the cover 2 and the side wall 3. And an engaging structure that is detachably formed between the two.

Next, the operation of changing the connection of the overhead telephone cable using the connection terminal box of the embodiment of the present invention thus constructed will be described. FIG. 6 is an exploded perspective view showing the mounting relationship between the cutout portion of the connection terminal box, the withdrawal plate, and the holding plate in the embodiment of the present invention, and FIG. 7 is the cutout portion and the withdrawal of the connection terminal box in the embodiment of the present invention. It is a disassembled perspective view which shows the attachment relation with a plate.

First, the side plate portion 2b of the cover 2 is opened in the direction of the arrow shown in FIG. 3, and the holding plate 5 at the position where connection is to be changed is inserted from the notch 1b of the bottom plate main portion 1a to the direction of the solid line arrow shown in FIG. Then, the drop plate 4 is pulled out from the notch 1b in the direction of the solid arrow shown in FIG.

Next, the outdoor wire (not shown) whose connection is to be changed is removed from the hole 4a of the drop plate 4 through the slit 4b. Connect the tool / measuring instrument (not shown) to both sides of the connection point of the removed outdoor line, disconnect the connection point, and change the connection. During this connection change work, since the tool / measuring device is connected to the outdoor line, even if the connection point is disconnected, the communication will be normally performed without being in a momentary disconnection state.

When the connection change is completed, the outdoor wire is returned to the predetermined hole 4a of the drawing board 4 through the slit 4b, the drawing board 4 is inserted in the direction of the broken line arrow shown in FIG. 7, and the holding plate 5 is drawn down. The plate 4 is inserted in the direction of the broken line arrow shown in FIG. Next, the side plate portion 2b of the cover 2
To close the work.

In this way, the slit 4b is used to remove the outdoor wire from which the connection is to be changed from the hole 4a.
Therefore, the connection can be changed without cutting the outdoor wire once to insert the hole 4a.

Since the pressing plates 5 attached to the notches 1b facing each other are locked by the connecting cords 6 to each other, they can be prevented from falling even if they are separated from the hand and can be used even at high places. Since the work can be carried out while the removed holding plate 5 is suspended, there is an advantage that the work safety can be maintained.

Here, the main parts that characterize the present invention will be described in detail.

FIG. 8 is a plan view showing the shape of the bottom plate in the embodiment of the present invention, and FIG. 9 is P shown in FIG. 8 in the embodiment of the present invention.
FIG. 10 is an enlarged view of a portion, and FIG. 10 shows G in the embodiment of the present invention shown in FIG.
FIG. 11 is an enlarged view of the Q portion shown in FIG. 8 in the embodiment of the present invention, and FIG. 12 is a B shown in FIG. 10 in the embodiment of the present invention.
-B sectional view and FIG. 13 are sectional views taken along the line KK shown in FIG. 9 in the embodiment of the present invention.

A rib 1c is formed in the cutout portion 1b of the bottom plate main portion 1a so as to be fitted with the pull-out plate 4 for the outdoor line.
A protrusion 1d for preventing the falling plate 4 from coming off is formed in the vertical direction at the tip of c. Further, protrusions 1e are formed on the upper and lower surfaces of the bottom plate main portion 1a along the ribs 1c, and further, protrusions 1f for preventing the pressing plate 5 from coming off are formed on the upper protrusions 1e.

FIG. 14A is a plan view showing the shape of the withdrawal plate in the embodiment of the present invention, FIG.
(C) is the E arrow line view, (d) is the FF sectional view.

The drop-off plate 4 is made of elastic plastic and has a hole 4a through which a plurality of outdoor wires are inserted, and a slit 4b reaching from the outer side to the hole 4a through which the outdoor wire is inserted. Is. The drop plate 4 has a size that fits in the cutout portion 1b of the bottom plate main portion 1a, and a groove 4c is formed on the back surface and both end surfaces thereof. The groove 4c fits with the rib 1c in the cutout portion 1b. .. In addition, a hole 4f is formed in the dropout plate 4 at a position corresponding to the protrusion 1d of the bottom plate main portion 1a. Therefore, when the falling plate 4 is pushed into the notch 1b, the groove 4c fits with the rib 1c and the hole 4f fits with the retaining projection 1d, so that it cannot be easily removed from the bottom plate main portion 1a. However, since the draw-down plate 4 has elasticity, it is possible to easily open and close the outdoor wire by opening the slit 4b and inserting the outdoor wire into the hole 4a.

The slit 4b is formed obliquely with respect to the outer side of the withdrawal plate 4 rather than at a right angle. This is to prevent the slit 4b from opening when the pressing plate 5 is pressed later. A thin film 4d is formed in the hole 4a as shown in FIG. 14A, and a cross-shaped cut 4e is formed in the thin film 4d. The thin film 4d is for simply sealing the portion of the thin film 4d when the outdoor wire is not inserted through the hole 4a, and the cross-shaped cut 4e is for facilitating insertion of the outdoor wire into the hole 4a. Is.

FIG. 15 (a) is a plan view of the holding plate in the embodiment of the present invention, FIG. 15 (b) is a bottom view thereof, and FIG. 16 is a view taken in the direction of arrow L shown in FIG. 15 (a) in the embodiment of the present invention. 18 is a view as seen from an arrow H shown in FIG. 15 (a) in the embodiment of the present invention.
FIG. 16 is a view taken in the direction of the arrow J shown in FIG.

The holding plate 5 is made of hard plastic and has a structure in which the portion of the draw-down plate 4 in which the slit 4b is formed is restrained from the outer side surface and the upper and lower surfaces.

The holding plate 5 has an upper plate portion 5a and a lower plate portion 5b which hold the upper and lower surfaces of the pulling plate 4 down. A U-shaped portion 5c is formed in each of the upper plate portion 5a and the lower plate portion 5b at a position corresponding to the hole 4a of the draw-down plate 4. In addition, holes 5d are formed at the ends corresponding to the protrusions 1f of the bottom plate main portion 1a at the end portions on both ends of the upper plate portion 5a. Therefore, when the pressing plate 5 is pressed from the outside of the drop plate 4, the hole 5d fits with the protrusion 1f and is lightly held by the bottom plate main portion 1a.

Further, a rib 5e is formed on the outer side of the pressing plate 5, and the rib 5e connects the pressing plate 5 to the bottom plate main portion 1.
When attached to a, the ribs 1c of the bottom plate main portion 1a are aligned on the same plane and on the same straight line. Therefore, this rib 5e is formed together with the rib 1c of the bottom plate main portion 1a in FIG.
As shown in FIG. 5, if the cover 2 is fitted in the groove on the lower side, the pressing plate 5 is securely fixed at that position, and the pulling-down plate 4 can be reliably suppressed. Further, if the cover 2 is removed, the pressing plate 5 can be easily removed from the bottom plate main portion 1a.

The above-mentioned bottom plate main portion 1a, withdrawal plate 4,
A state in which the holding plate 5 is combined is as shown in FIG.
In this state, the cover is combined as in the conventional case to form a protective case for the outdoor wire dropout portion.

It is assumed that the outdoor line penetrates the hole 4a of the drop board 4 and is internally connected to the telephone cable. If the connection terminal box is damaged in this state and it is necessary to replace it, first remove the cover 2, then remove the holding plate 5, and then through the outdoor wire pulling plate 4 through the slit 4b. Pull it out of the withdrawal plate 4. Thereby, the bottom plate 1 can be removed while the telephone cable and the outdoor line are connected.

When a new connecting terminal box is covered,
The outdoor wire, which is still connected to the telephone cable, may be inserted into the hole 4a through the slit 4b of the drop plate 4, the pressing plate 5 may be attached, and then the cover 2 may be covered.

In this way, the connection terminal box can be replaced without disconnecting the connection between the telephone cable and the outdoor line.

[0034]

As described above, when the connection terminal box according to the present invention is used, the bottom plate can be detached at the time of connecting the overhead telephone cable to facilitate the attachment of the connection tool and the like, and the work man-hour can be remarkably reduced. In addition, when the connection terminal box is replaced due to aging, the telephone cable and the outdoor line are not disconnected from each other, the user's consent is not required and the work man-hour is reduced, and at the same time, the service for the user can be improved. Especially when digital data signals that connect computers to each other are transmitted through telephone cables, it is now possible to prevent communication from being temporarily interrupted for work. It is extremely effective for maintenance and operation of outdoor lines.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wiring state in a connection terminal box according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an external structure of a connection terminal box in the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a configuration of a connection terminal box in the embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a mounting structure of a bottom plate, a drop plate, and a holding plate of the connection terminal box in the embodiment of the present invention.

FIG. 5 is an enlarged view of a portion A shown in FIG. 3 of the connection terminal box in the embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a mounting relationship between a cutout portion of a connection terminal box, a drop plate, and a holding plate in the embodiment of the present invention.

FIG. 7 is an exploded perspective view showing the mounting relationship between the cutout portion of the connection terminal box and the dropout plate in the embodiment of the present invention.

FIG. 8 is a plan view showing the shape of the bottom plate in the embodiment of the present invention.

FIG. 9 is an enlarged view of a P portion shown in FIG. 8 in the embodiment of the present invention.

FIG. 10 is a view on arrow G shown in FIG. 9 in the embodiment of the present invention.

FIG. 11 is an enlarged view of a Q portion shown in FIG. 8 in the embodiment of the present invention.

FIG. 12 is a sectional view taken along line BB shown in FIG. 10 according to the embodiment of the present invention.

FIG. 13 is a sectional view taken along line KK shown in FIG. 9 in the embodiment of the present invention.

14 (a) is a plan view showing the shape of a drop plate in the embodiment of the present invention, FIG. 14 (b) is its D arrow view, FIG. 14 (c) is its E arrow view, and FIG. F sectional view.

15A is a plan view of a holding plate according to an embodiment of the present invention, and FIG. 15B is a bottom view thereof.

FIG. 16 shows L shown in FIG. 15A in the embodiment of the present invention.
View from the arrow.

FIG. 17 shows H shown in FIG. 15 (a) in the embodiment of the present invention.
View from the arrow.

FIG. 18 is a view of J shown in FIG. 15A in the embodiment of the present invention.
View from the arrow.

FIG. 19 is a sectional view showing an assembled state of the cover and the bottom plate in the embodiment of the present invention.

FIG. 20 is a bottom view showing the assembled state of the bottom plate, the drop plate, and the holding plate in the embodiment of the present invention.

FIG. 21 is an exploded perspective view showing a configuration of a connection terminal box in a conventional example.

[Explanation of symbols]

 1 bottom plate 1a bottom plate main part 1b cutout part 1c rib 1d, 1f retaining projection 1e ridge 2 cover 2a top plate part 2b side plate part 2c hinge part 3 side wall 4 drop plate 4a, 4f, 5d hole 4b slit 4c groove 4d Thin film 4e Cross-shaped cut 5 Presser plate 5a Upper plate part 5b Lower plate part 5c U-shaped part 5e Rib 6 Connecting string 7 Fixing metal 8 Screw

Front page continuation (71) Applicant 000004226 Nippon Telegraph and Telephone Corporation 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo (72) Inventor Haruo Sato 5-23-8 Nishigotanda, Shinagawa-ku, Tokyo Incorporated by Seiden Co., Ltd. (72) Inventor Yoshiharu Kondo 3-12-15 Chuo, Warabi-shi, Saitama Nikko Electric Co., Ltd. (72) Inventor Shigeyuki Kojima 16-9 Wakamatsucho, Shinjuku-ku, Tokyo Shinri Kogyo Co. Ltd. Inventor Satota 1-48 Tokugawa, Higashi-ku, Nagoya, Aichi Prefecture Takacom Co., Ltd. (72) Inventor Hiroshi Ishikawa 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Kazuo Hatano 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (5)

[Claims] 1. A rectangular bottom plate, covers attached to both long side portions of the bottom plate to form a space above the bottom plate, and the bottom plate and the cover on both short side portions of the bottom plate. And two side walls attached so as to respectively close the opening of the space formed by, the cover is formed of a hard plastic material,
A hinge portion is formed between a top plate portion and a side plate portion of the cover, and lower ends of both side plate portions of the cover and both long side portions of the bottom plate are formed in a detachable engagement terminal box. In the above, the bottom plate is detachable from the overhead telephone cable by detachably engaging the bottom plate main portion made of a hard plastic material provided with a notch portion in a part of its long side and the notch portion. Then, with a structure including a draw-down plate formed of a soft plastic material provided with a hole through which an outdoor wire connecting to each building is inserted, and a holding plate for pressing the drop-down plate to the main part of the bottom plate. A connection terminal box, wherein a slit for introducing the outdoor wire is formed in the hole provided in the dropout plate in a state where the pressing plate is removed. 2. The connection terminal box according to claim 1, wherein the hole through which the outdoor wire is inserted is closed by a soft plastic material having a cross-shaped cut. 3. The cutout portion is provided so as to face both long side portions of the bottom plate, and the withdrawal plate and the pressing plate are attached to the cutout portions, respectively.
2. The connection terminal box according to claim 1, further comprising a connecting string that connects two holding plates attached to the facing notches. 4. A fixture and a movable fixture for gripping an overhead telephone cable penetrating the sidewall are provided inside the cover in the vicinity of the sidewall, and the fixture is fastened to the bottom plate main portion from the outside of the bottom plate. The connection terminal box according to claim 1, which is attached with a screw. 5. An engaging structure detachably formed between lower ends of both side plate portions of the cover and both long side portions of the bottom plate and between both open ends of the cover and the side wall. The connection terminal box according to claim 1.