JP2819206B2 - Connection terminal box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND 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 a connection point of a multi-pair telephone cable suspended overhead by a telephone pole. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal box for performing connection change without disconnecting an 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 connection terminal box. A conventional connection terminal box includes a rectangular bottom plate 1, a cover 2 attached to both long sides of the bottom plate 1 to form a space above the bottom plate, and two short sides 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 formed 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 cover 2, and the lower end of the both side plate portions 2b of the cover 2 and the bottom plate 1 are formed. Are formed in a detachable engagement structure. Further, the bottom plate 1 has a rubber sheet portion through which an outdoor line branched from the aerial telephone cable and connected to each building can be inserted. The rubber sheet portion facilitates the insertion of the outdoor line and allows the outdoor line to be inserted. Cross holes are cut so that the holes that are not covered are closed. 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 capable of protecting the connection point of the communication line from rain and snow and performing connection work even during rainfall or snowfall.

[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 a hole formed in a bottom plate and inserted into a cover case. It was designed to be connected to a telephone cable, so if the cover or bottom plate was damaged or deteriorated and the connection terminal box needed to be replaced, the outdoor line had to be cut off once Unable to remove old used connection terminal box. Also, 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 in advance the understanding that the communication will be temporarily disabled, and therefore, if these operations are included, a considerably large number of steps are required. In recent years, not only telephone signals but also digital data signals for connecting computers to each other have been transmitted on telephone cables in many cases, and communication has become impossible even if the user has obtained prior consent. Can be forgiven, even temporarily, or even for a very limited time, such as at night. In such a case, the connection terminal box cannot be replaced.

[0004] On the other hand, the connection of the aerial telephone cable requires a space for mounting a connection tool or the like in a place with poor scaffolding such as on a ladder. However, the above-mentioned conventional structure has a structure in which the bottom plate cannot be removed. There were drawbacks in that it was difficult to attach tools and the like, making connection work difficult, and the work efficiency was poor.

[0005] The present invention has been made in view of such a background, it is possible to change the connection or exchange the connection terminal box without disconnecting once at the connection point of the telephone cable or outdoor line, thereby improving the work efficiency. It is an object of the present invention to provide a connection terminal box that can be used.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an apparatus in which an outdoor telephone cable withdrawal portion is improved. That is, the bottom plate is provided with a bottom plate main portion formed of a hard plastic material having a cutout in a part of its long side portion, and a hole through which the outdoor wire is detachably engaged with the cutout and is provided. And a pressing plate for pressing the drawn-down plate against the main portion of the bottom plate, wherein the cut-out portion includes the drawn-down plate,
A mating rib is formed, and the cutout plate is provided with the notch.
Groove for fitting is provided in section ribs, slits for the said hole provided in the draw-down plate for introducing the outdoor line to the hole in a state of detaching the retainer plate is formed, prior to
Soft plastic material with a cross cut in the hole
Structure, and the holding plate is
It has an upper plate and a lower plate for holding the plate by the upper and lower surfaces.
The upper plate portion and the lower plate portion are located at positions corresponding to the holes of the draw-down plate portion.
The holder has a U-shaped portion, and is fitted into the cutout.
The hole that fits into the protrusion provided in the cutout
It is characterized by being provided at the leading edge .

[0007] The notch is provided so as to face both long sides of the bottom plate, and the pull-down plate and the pressing plate are attached to each of the notches. A connecting string for connecting the two draw-down plates attached to the section, a fixing metal fitting and a movable metal fitting for gripping a cable passing through the side wall inside the cover close to the side wall; The cover is attached to the bottom plate main portion with screws that are tightened from the outside of the bottom plate, and is attached and detached 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. It is desirable that the structure has a freely formed engagement structure.

[0008]

When the outdoor line is connected to the aerial telephone cable, the outdoor line is inserted into the hole of the drawer after opening the cover. This operation can be performed in the same manner as the conventional structure without changing the operation procedure. Alternatively, it is possible to remove the holding plate fitted into the cutout portion of the main portion of the bottom plate, drop the outdoor line, and push the outdoor line through the cutout of the plate, thereby connecting the outdoor line into the case. The connection between the aerial telephone cable and the outdoor line is made by a connector inside the cover using a tool (not shown). In this case, since the bottom plate can be removed, a sufficient space for tools can be secured.

Next, when it becomes necessary to replace the entire connection terminal box, the cover is first removed, then the holding plate is removed, and the outdoor wire is drawn out through the slit of the plate. This can be done without disconnecting (disconnecting) the outdoor line from the telephone cable. The connection terminal box can be mounted in the reverse manner, and the bottom plate can be mounted and the cover can be mounted by inserting an outdoor wire into the hole through the slit of the draw-down plate.

When connecting an aerial telephone cable, remove the holding plate fitted in the cutout of the main part of the bottom plate,
The outdoor line is drawn out to the outside through the slit of the board.
Further, the screws holding the main part of the bottom plate and the fixing bracket are loosened to separate the fixing metal part from the main part of the bottom plate, and the main part of the bottom plate is pulled out in the short side direction (front side) and removed. Thereafter, tools are attached to both sides of the connection point where the connection of the aerial telephone cable is to be performed, and a connector connection (not shown) is performed. Removing the bottom plate makes it easier to install tools and improves the efficiency of connection work.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a wiring state in a connection terminal box in the embodiment of the present invention, FIG. 2 is a perspective view showing an external structure of the connection terminal box in the embodiment of the present invention, and FIG. 3 is 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 pull-down plate, and a 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. It is the A section enlarged view shown in FIG.

A connection terminal box according to an embodiment of the present invention includes a single rectangular bottom plate 1, a cover 2 attached to both long sides of the bottom plate 1 to form a space above the bottom plate 1,
The two short sides are provided with two side walls 3 attached so as to close the openings of the space formed by the bottom plate 1 and the cover 2, respectively. The cover 2 is formed of a hard plastic material. 2, a hinge portion 2c is formed between the top plate portion 2a and the side plate portion 2b, and the 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. As a feature of the present invention, the bottom plate 1 detachably engages with a bottom plate main portion 1a formed of a hard plastic material having a cutout portion 1b provided at a part of a long side thereof, and the cutout portion 1b. Draw-down plate 4 made of a soft plastic material provided with holes 4a through which outdoor wires are inserted
And a pressing plate 5 for pressing the draw-down plate 4 against the bottom plate main portion 1a, and a hole 4a provided in the draw-down plate 4
Is formed with a slit 4b for introducing an outdoor line into the hole 4a with the holding plate 5 removed.

A cross-shaped cut 4e is provided in a hole 4a of the draw-down plate 4 through which an outdoor line is inserted, and a notch 1b is formed.
Are provided so as to oppose both long sides of the bottom plate 1, and the pull-down plate 4 and the holding plate 5 are attached to each of the notches 1 b, and are attached to the opposed notches 1 b. The cover includes a connecting string for connecting the two draw-down plates, and a fixing metal and a movable metal fitting for holding an overhead telephone cable penetrating the side wall inside the cover near the side wall. Reference numeral 7 is attached to the bottom plate main portion 1a by screws 8 which are tightened from the outside of the bottom plate 1, 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 engagement structure detachably formed therebetween.

Next, a description will be given of the operation of changing the connection of the aerial telephone cable using the connection terminal box constructed as described above according to the present invention. FIG. 6 is an exploded perspective view showing the mounting relationship between the cutout portion of the connection terminal box, the pull-down plate, and the holding plate in the embodiment of the present invention, and FIG. 7 is a cut-out portion of the connection terminal box in the embodiment of the present invention. FIG. 4 is an exploded perspective view showing a mounting relationship with a work board.

First, the side plate 2b of the cover 2 is opened in the direction of the arrow shown in FIG. 3, and the holding plate 5 at the place where the connection is to be changed is cut from the cutout 1b of the bottom plate main part 1a in the direction of the solid arrow shown in FIG. Then, the pull-down plate 4 is pulled out from the notch 1b in the direction of the solid arrow shown in FIG.

Next, an outdoor line (not shown) to be reconnected is removed from the hole 4a of the drawer plate 4 through the slit 4b. Connect a tool and measuring device (not shown) to both sides of the connection point of the removed outdoor line, disconnect the connection point, and change the connection. At the time of this connection change work, since the tool / measuring device connects the outdoor line, even if the connection point is disconnected, no instantaneous interruption occurs and communication is performed normally.

When the reconnection is completed, the outdoor line is returned to the predetermined hole 4a of the draw-down plate 4 through the slit 4b, the draw-down plate 4 is inserted in the direction of the dashed arrow shown in FIG. 7, and the holding plate 5 is pulled down. The plate 4 is inserted and fixed in the direction of the dashed arrow shown in FIG. Next, the side plate 2b of the cover 2
To close the work.

As described above, the removal of the outdoor line to be reconnected from the hole 4a of the drawer plate 4 is performed by the slit 4b.
The connection can be changed without once cutting the outdoor line to insert the hole 4a.

Since the holding plates 5 attached to the notches 1b facing each other are locked by the connecting strings 6, the holding plates 5 can be prevented from falling even if they are separated from the hand, and can be used even when working at a high place. Since the work can be performed with the removed holding plate 5 suspended, there is an advantage that the safety of the work can be maintained.

Here, the main components of 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.
FIG. 10 is an enlarged view of a portion of FIG.
FIG. 11 is an enlarged view of a portion Q shown in FIG. 8 in the embodiment of the present invention, and FIG. 12 is a view B in FIG. 10 in the embodiment of the present invention.
13 is a sectional view taken along the line KK shown in FIG. 9 in the embodiment of the present invention.

A notch 1b of the bottom plate main portion 1a is formed with a rib 1c which fits with the draw-out plate 4 of the outdoor line.
At the tip of c, a protrusion 1d for retaining the pull-down plate 4 is formed in the vertical direction. Also, a ridge 1e is formed on the upper and lower surfaces of the bottom plate main portion 1a along the rib 1c, and a protrusion 1f for retaining the holding plate 5 is formed on the ridge 1e on the upper surface side.

FIG. 14A is a plan view showing the shape of the draw-down plate in the embodiment of the present invention, FIG.
(C) is a view taken in the direction of arrow E, and (d) is a sectional view taken along line FF.

The draw-down plate 4 is made of an elastic plastic, has a plurality of holes 4a through which a plurality of outdoor lines are inserted, and a slit 4b extending from an outer side to the hole 4a through which the outdoor lines are inserted. It is. The drop-down plate 4 is large enough to fit in the cutout portion 1b of the bottom plate main portion 1a, and has grooves 4c formed on the back surface and both end surfaces thereof. The groove 4c is fitted with the rib 1c in the cutout portion 1b. . A hole 4f is formed in the draw-down plate 4 at a position corresponding to the protrusion 1d of the bottom plate main portion 1a. Therefore, when the drop-down plate 4 is pushed into the notch 1b, the groove 4c is fitted to the rib 1c, and the hole 4f is fitted to the retaining protrusion 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 easy to open the slit 4b and put the outdoor line into and out of the hole 4a through which the outdoor line is inserted.

The slit 4b is formed not obliquely but at right angles to the outer side of the draw-down plate 4. 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 when the outdoor line is not inserted into the hole 4a, and the cross-shaped cut 4e is for allowing the outdoor line to be easily inserted into the hole 4a. It is.

FIG. 15A is a plan view of a holding plate according to the embodiment of the present invention, FIG. 15B is a bottom view thereof, FIG. 16 is a view taken along the arrow L shown in FIG. FIG. 18 is a view taken in the direction of the arrow H shown in FIG.
FIG. 16 is a view on arrow J shown in FIG. 15A in the embodiment of the present invention.

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

The holding plate 5 has an upper plate portion 5a and a lower plate portion 5b for suppressing the upper and lower surfaces of the draw-down plate 4. U-shaped portions 5c are formed in the upper plate portion 5a and the lower plate portion 5b at positions corresponding to the holes 4a of the draw-down plate 4. Holes 5d are formed at the front end portions of both ends of the upper plate portion 5a at positions corresponding to the protrusions 1f of the bottom plate main portion 1a. Therefore, when the holding plate 5 is pressed from the outside of the drop-down plate 4, the hole 5d is fitted with the projection 1f, and the bottom plate main portion 1a is lightly held.

A rib 5e is formed on the outer side of the holding plate 5, and the rib 5e connects the holding plate 5 to the bottom plate main portion 1a.
In the state attached to a, the ribs 1c of the bottom plate main portion 1a are arranged on the same plane and on the same straight line. Therefore, this rib 5e is combined with the rib 1c of the bottom plate main part 1a in FIG.
When the cover 2 is fitted in the groove on the lower side of the cover 2 as shown in FIG. 4, the holding plate 5 is securely fixed at that position, and the pull-down plate 4 can be reliably suppressed. When the cover 2 is removed, the holding plate 5 can be easily removed from the bottom plate main portion 1a.

The above-mentioned bottom plate main portion 1a, pull-down plate 4,
FIG. 20 shows a state in which the holding plate 5 is combined.
In this state, the cover is combined in the same manner as in the related art to form a protection case for the outdoor wire drop-down unit.

It is assumed that an outdoor line penetrates the hole 4a of the draw-down plate 4 and is internally connected to a telephone cable. If the connection terminal box is damaged in this state and needs to be replaced, first remove the cover 2, then remove the holding plate 5, drop the outdoor wire, and pass through the slit 4 b of the plate 4. Pull it out of the drawer plate 4. Thus, the bottom plate 1 can be removed while the telephone cable and the outdoor line are connected.

When a new connection terminal box is placed,
The outdoor line connected to the telephone cable may be inserted into the hole 4a through the slit 4b of the drawer plate 4, the holding plate 5 may be attached, and the cover 2 may be covered.

In this manner, the connection terminal box can be replaced without disconnecting the telephone cable from the outdoor line.

[0034]

As described above, when the connection terminal box according to the present invention is used, the bottom plate is removed at the time of connecting the aerial telephone cable, thereby facilitating installation of connection tools and the like, and the number of work steps can be reduced remarkably. In addition, when the connection terminal box is replaced due to aging, the connection between the telephone cable and the outdoor line is not disconnected, so that the user's understanding is not required, the number of work steps is reduced, and the service for the customer can be improved. Especially when digital data signals that connect computers to each other are transmitted over a telephone cable, it is now possible to prevent communication from being disabled temporarily even for work. It is very effective for maintenance and operation of outdoor lines.

[Brief description of the 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 pull-down 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 the mounting relationship between the cutout portion of the connection terminal box, the pull-down plate, and the 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 pull-down plate in the embodiment of the present invention.

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

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

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

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

14A is a plan view showing the shape of the draw-down plate in the embodiment of the present invention, FIG. 14B is a view as seen from an arrow D, FIG. 14C is a view as seen from an arrow E, and FIG. F sectional drawing.

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

FIG. 16 is a diagram showing an embodiment of the present invention;
Arrow view.

FIG. 17 shows an example of H shown in FIG.
Arrow view.

FIG. 18 shows an embodiment of the present invention shown in FIG.
Arrow view.

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 draw-down 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]

 REFERENCE SIGNS LIST 1 bottom plate 1a bottom plate main portion 1b cutout portion 1c rib 1d, 1f retaining protrusion 1e ridge 2 cover 2a top plate portion 2b side plate portion 2c hinge portion 3 side wall 4 pull-down plate 4a, 4f, 5d hole 4b slit 4c groove 4d Thin film 4e Cross cut 5 Holding plate 5a Upper plate 5b Lower plate 5c U-shaped portion 5e Rib 6 Connecting string 7 Fixing bracket 8 Screw

Continuing from the front page (73) Patent holder 000004226 Nippon Telegraph and Telephone Corporation 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo (72) Inventor Haruo Sato 5-23-8, Nishigotanda, Shinagawa-ku, Tokyo Shodensha Co., Ltd. (72) Inventor Yoshiharu Kondo 3-12-15 Chuo, Warabi City, Saitama Prefecture Nikko Electric Works, Ltd. (72) Inventor Shigeyuki Kojima 16-9 Wakamatsucho, Shinjuku-ku, Tokyo Shinri Kogyo Co., Ltd. (72 Inventor: Sato Ta 1-48, Tokugawa, Higashi-ku, Nagoya City, Aichi Prefecture Inside Takacom Co., Ltd. (72) Inventor Hiroshi Ishikawa 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Kazuo Hatano 1-6, Uchisaiwai-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (56) Reference: Japanese Utility Model Application Sho 60-109377 (JP, U) Japanese Public Utility Model 59-23434 (JP, Y2) Japanese Public Utility Company Sho 57 −38945 (JP, Y2) Jiko 60-15858 (JP, Y2) Jiko 1-27397 (JP, Y2) Country 91/3091 (WO, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 15/00-15/196 H02G 3/22

Claims (4)

(57) [Claims] 1. A rectangular bottom plate, a cover attached to both long sides of the bottom plate to form a space above the bottom plate, and the bottom plate and the cover on both short sides of the bottom plate. And two side walls attached to respectively close the openings of the space formed by the above, wherein the cover is formed of a hard plastic material,
A connection terminal box in which 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 structure. In the above, the bottom plate is detachably engaged with a bottom plate main portion formed of a hard plastic material provided with a cutout in a part of a long side thereof, and branches from the aerial telephone cable. A structure comprising a draw-down plate formed of a soft plastic material provided with a hole through which an outdoor line to be connected to each building is inserted, and a holding plate for pressing the draw-down plate against the bottom plate main portion. There is a rib formed in the notch to be fitted with the draw-down plate.
The drop-down plate has a groove to be fitted in the notch rib.
Vignetting, this is the hole provided in the draw-down plate slit for introducing the outside line to the hole in a state of detaching the retainer plate is formed, a cross-shaped cut is input into the hole
Structure closed by soft plastic material
And the presser plate presses the pull-down plate by upper and lower surfaces.
It has a plate portion and a lower plate portion, and the upper plate portion and the lower plate portion
A U-shaped part is formed at the position corresponding to the hole of the drop plate part.
When it is fitted into the notch, it is set in the notch.
A connection terminal box, characterized in that a hole to be fitted in the projected projection is provided at the front edge . 2. A structure in which the cutouts are provided so as to face both long sides of the bottom plate, and the drop-down plate and the presser plate are attached to the cutouts, respectively.
2. The connection terminal box according to claim 1, further comprising a connecting string for connecting the two holding plates attached to the opposed cutouts. 3. A fixed metal fitting and a movable metal fitting for holding an overhead telephone cable penetrating the side wall inside the cover in close proximity to the side wall, the fixed metal part being fastened to the main part of the bottom plate from outside the bottom plate. The connection terminal box according to claim 1, wherein the connection terminal box is attached by a screw. 4. 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.