JPH09284970A - Joint box for wiring unit cable and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the aligning and inserting works of a plurality of wiring unit cables, by providing a housing with an opened side surface wherethrough the cables can be inserted into a cable aligning member from the radial directions of the cables, and by providing a cover for making the choking of the opened side surface possible integrally with the housing. SOLUTION: A joint box 1 for wiring unit cables has a housing 3 with both an opened side surface 3A present in the direction of squeezing cables 10 into the housing 3 and an opened side surface 3B for drawing out the cables 10 therefrom, a cover 5 with both an opened side surface 5A opposed to the opened side surface 3A of the housing 3 and an opened side surface 5B present in the same direction as the opened side surface 3B of the housing 3, cable aligning members 9 provided inside both the housing 3 and the cover 5 and disposed in the sides of choking the side surfaces 3A, 5A. In the cable aligning member 9, recessed portion 9A whereinto the cables 10 can be inserted from their radial directions are formed in the form of grooves extending to the longitudinal direction of the housing 3. Therefore, only by inserting the cables 10 into the recessed portion 9A, the cables 10 can be held in aligned attitudes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for constructing a wiring structure in which joint ends of a plurality of wiring unit cables are connected to each other in a single connecting body so that branches are integrated at, for example, one place. The present invention relates to a joint box for a wiring unit cable and a method for manufacturing the joint box.

[0002]

2. Description of the Related Art Generally, an indoor wiring unit cable is used for electric wiring in a building such as an apartment house or a unit house, which is standardized to some extent, and various types of indoor wiring unit cables are used. This is adopted, and as shown in "Unit cable connection part" described in Japanese Utility Model Publication No. 6-40429, generally, joint ends of a plurality of cables are connected by a single bottomed tubular connector. By processing, the wiring structure in which the branches are integrated in one place is constructed.

In this case, the connection body is a so-called connection box (joint box) made of insulating plastic or the like, and usually an insulating thermosetting resin (epoxy resin or the like) is contained in the joint box. It is filled and molded to fix and protect the conductors of cables that have been branched and connected. Also, the cables are covered electric wires with an insulative outer coating, such as 2-core cables and 3-core cables. What is appropriately configured according to the application is used.

In the stage before the thermosetting resin is filled in the joint box, it is necessary to manually align and insert the plurality of wiring unit cables into the joint box.

[0005]

However, the operation of aligning and inserting a plurality of wiring unit cables in a parallel close contact state in a flat joint box having substantially the same cross section as the number of wiring unit cables increases. It is a labor-intensive work. Further, when the number of cables is very large, a jig for aligning the cables is required, and even if a jig is used, the alignment / insertion work is not easy. That is, since the wiring unit cable is connected by a sleeve or the like at the tip end portion that is inserted into the flat rectangular joint box, the connection portion is likely to protrude to the outside of the bundle of wiring unit cables, and the protruding connection portion is the frontage. It was extremely difficult to insert into a narrow flat joint box.

An object of the present invention is to provide a joint box for a wiring unit cable and a method for manufacturing the joint box, which facilitates the work of aligning and inserting a plurality of wiring unit cables in the joint box.

[0007]

The above object of the present invention is to provide a wiring unit cable joint box in which cable ends of a plurality of cables for a wiring unit are joint-processed in a joint box, and the processing portions are resin-sealed. , A plurality of recesses for contacting the outer peripheral surface of the cable to hold the cables when the plurality of cables are inserted from the direction along the radial direction of the cable, and communicating both ends of the member along the same direction as the recesses A cable aligning member having a communicating portion provided in the cable aligning member, and the cable aligning member is provided inside, and a side surface that allows the cable to be inserted in the cable radial direction with respect to the cable aligning member. An opened housing and an opposite side surface facing the opening side surface are opened and integrated with the housing. And a lid that can close the side surface of the opening, and a joint box for a wiring unit cable. Then, as an embodiment of the present invention, it is preferable that the lid body is integrally formed with the housing via a hinge.

As an embodiment of the present invention, the lid may be provided with a second cable aligning member having a second recess corresponding to the recess of the housing. Further, as an embodiment of the present invention, it is preferable that the housing and the lid are provided with locking means for locking the housing and the lid in a closed state.

Further, an object of the present invention is to provide a cable aligning member having a recess capable of holding each cable outer periphery of a plurality of cables, and to provide a housing and a lid body which are proportioned so that the recess is opened. A method for manufacturing a joint box for a wiring unit cable, wherein a plurality of the cables having conductor portions at the ends thereof connected to each other are brought into a state in which the cable outer circumferences are aligned and held by the recesses, and the cable alignment member, the housing, and The lid defines a connection space that accommodates the tip of the cable, and then the cable alignment member is positioned on the upper side, and the connection space is filled with resin from the cable alignment member side before the resin is filled. This is achieved by a method for manufacturing a joint box for a wiring unit cable, which is characterized by solidifying.

As described above, in the wiring unit cable joint box and the method of manufacturing the same according to the present invention, the cables are held in the aligned posture only by inserting the cables into the cable aligning member.

Further, in the wiring unit cable joint box and the method for manufacturing the same according to the present invention, the housing and the lid are in an open state so that the tip portion of the cable can be easily housed, and both the cables are mounted after the cable is mounted. The members are integrally fixed.

On the other hand, in the wiring unit cable joint box of the present invention, the cables are held in the aligned posture only by inserting the cables into the cable aligning member, and also by the second cable aligning member.
The cable alignment posture is maintained.

Further, in the wiring unit cable joint box of the present invention, the housing and the lid are integrated by engaging the engaging recess and the engaging projection with each other.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a joint box for a wiring unit cable according to the present invention will be described below with reference to the drawings. As will be understood from FIG. 1, the wiring unit cable joint box 1 in this embodiment has a side surface 3A (upper side in the drawing) in which the cable 10 is pushed in and a side surface 3 from which the cable 10 is pulled out.
A housing 3 having an opening B (front side in the figure), a lid 5 having an opening 5a facing the opening side 3A of the housing 3 and a side 5B in the same direction as the side 3B.
The side surface 3 is provided in the housing 3 and the lid 5.
A, 5A and a cable alignment member 9 arranged on the closed side, and the housing 3, the lid 5, and the cable alignment member 9 are made of the same insulating material such as epoxy resin. It is integrally molded in the molding die.

On the bottom surfaces of the housing 3 and the lid 5,
The fixing portions 11 and 11 are formed integrally with the housing 3 and the lid body 5, respectively, and the protruding portions of the fixing portions 11 and 11 close the opening side surface 3A. The protrusion lengths are set so as to abut each other when integrated with 3. And the fixed part 1
A bolt is passed through the hole 11a of No. 1 to install the joint box on a wall such as a ceiling.

Here, the cable aligning member 9 is provided with a single cable 10 constituting a wiring unit cable 30 used for indoor wiring or the like, in the radial direction (direction from the upper side to the lower side in FIG. 1). Recessed 9A that can be inserted from
Is formed in a groove shape along the longitudinal direction of the housing 3, and the operator inserts the sheath of the cable 10 in which the conductor portion of the cable end is connected into the recess 9A, whereby the cable tip portion is connected to the connection space. The cable 10 is configured to be in an aligned posture when it is accommodated in the cable 35.

In this case, the width, length, and depth of the recess 9A are such that when the cable 10 is inserted, the outer peripheral side surface of the cable 10 is pressed with an appropriate pressure so as not to come out. Is set to the outer peripheral shape of the cable in a half section, and is formed on the cable alignment member 9 (second cable alignment member) on the lid body 5 side when the lid body 5 and the housing 3 are integrated. The concave portion 9A on the housing 3 side facing the concave portion 9A (second concave portion) causes the cable 1
The entire outer peripheral surface of 0 is clamped, and when inserted into the housing 3, the posture aligned by the cable alignment member 9 is maintained. Note that 9B is a communication portion formed on the opposite side of the cable alignment member 9 from the recess 9A.

That is, the recess 9A formed in the cable aligning member 9 on the housing 3 side may serve as a guide for aligning the cables 10 and can maintain the aligned posture, and the lid 3 The shape, width, length, and depth of the recess 9A formed in the cable alignment member 9 on the side are as follows when the lid 3 and the housing 3 are integrated.
It suffices that the cable 10 is set so as to maintain the aligned posture.

The cables 10 are respectively recessed 9A.
With the lid 5 and the housing 3 integrated with each other, the insulating thermosetting resin such as epoxy resin has the bottom surface 6 down (the cable alignment member is on the upper side). It is filled in the connection space 35 of the cable joint box 1 and cured for a predetermined time. Although a detailed description of the resin filling step is omitted, the insulating thermosetting resin is filled, for example, by using the communication portion 9B formed on the opposite side of the concave portion 9A of the cable alignment member 9 as a filling port. Alternatively, the communicating portion 9B can be used as an air bleeder during high-speed filling.

Further, the above-mentioned communication portion 9B is also effective as a structure for preventing sink marks of resin when the housing 3 and the lid 5 are molded. That is, when the cable aligning member 9 is integrally molded with the housing or the lid, the portion of the aligning member 9 becomes thick, so that sink marks of the resin are likely to occur at the thick portion at the time of molding. Since the communication portion 9B is formed, the thickness can be substantially gradually reduced as a "meat stealing" structure, and there is also a sink preventing effect.

Further, the communicating portion in the present invention may be a resin injection port or an air vent port. That is, an appropriate gap is formed when the cable 10 is held by filling the resin by using the remaining recess 9A where the cable 10 is not fixed or partially changing the cross-sectional shape of the recess 9A. Not only can the resin be filled using the above, but it can also be used as an air vent when filling the resin from the remaining recessed portion 9A or the gap, so that the resin can be filled quickly.

In the above embodiment, the housing 3, the lid 5 and the cable aligning member 9 are integrally formed, but the housing 3, the lid 5 and the cable aligning member 9 are separately formed. Then, it is also possible to adopt a configuration in which it is assembled via a fixing means (not shown), and a configuration in which the cable alignment member 9 is provided only in the housing 3 and not in the lid 5 is also possible.

The housing 3 and the lid body 5 are connected to each other via a hinge portion 20 formed by making the housing 3 and the side wall forming the lid body 5 appropriately thinner. When is integrated with the housing 3, one side surface in the width direction of the housing 3 is closed by the hinge portion 20, but the hinge portion 20 is not necessarily provided as described later (see FIG. 2 and the like).

The lid 3 is provided on one side surface in the width direction of the lid 3.
An engaging projection 15 is integrally formed with the engaging projection 15, and an engaging recess 13A with which the engaging projection 15 is engaged is formed on the other side surface of the housing 3 in the width direction so as to correspond to the engaging projection 15. (In this embodiment, the stopper member 13 is formed so as to penetrate therethrough) is integrally formed with the housing 3, and the engaging projection 15 and the engaging recess 13A are engaged with each other, so that the lid The body 5 is set so as to close the opening side surface 3A so as to be maintained in the state of being integrated with the housing 3 (see FIGS. 2, 3, and 4).

As described above, in the wiring unit cable joint box 1 in this embodiment, the cable 10 is held in the aligned posture only by inserting the cable 10 into the recess 9A of the cable aligning member 9. Therefore, the work of aligning and inserting the wiring unit cables 30 including the plurality of cables 10 into the wiring unit cable joint box 1 can be easily performed.

Since the housing 3 and the lid 5 are integrally formed via the hinge portion 20, there is an advantage that the joint box 1 for the wiring unit cable can be easily formed and handled.

In addition, since the cable 10 is held by the cable aligning member 9 (second cable aligning member) formed on the lid 5, the cable 10 can be held more accurately. There is an advantage that you can.

In addition, since a gap structure does not occur at the contact end surface between the housing 3 and the lid 5 and a suitable disconnection structure is adopted, it is possible to avoid resin leakage during resin filling. Further, the engaging means of the engaging recess 13A and the engaging projection 15 are engaged with each other, so that the housing 3
Since the lid 5 and the lid 5 are integrated, the alignment posture of the cables 10 can be more accurately maintained, and as a result, there is an advantage that the joint box 1 for the wiring cable unit before filling with the thermosetting resin can be easily handled.

As can be seen from FIG. 2, the housing 3 and the lid 5 are integrated after the cable 10 is aligned, and the hinge portion 20 is not formed, and both sides of the housing 3 in the width direction are formed. The engaging recess 13A and the engaging projection 15 on the surface.
Are formed on both sides of the lid body 5 in the width direction,
Engagement protrusion 15 that engages with the engagement recess 13A of the housing 3
And the engaging recess 13 that engages with the engaging protrusion 15 of the housing 3.
A configuration in which each A is formed is also suitable.

As can be seen from FIG. 3, engaging recesses 13A and 13A are formed on both side surfaces of the housing 3 in the width direction, and engaging protrusions 15 are formed on both side surfaces of the lid body 5 in the width direction. , 15 are respectively formed, and the engagement recess 13A and the engagement projection 15 are engaged with each other.

Further, as can be seen from FIG. 4, the engaging projections 15 and 15 are formed on both side surfaces of the housing 3 in the width direction, and the engaging recess 13A is formed on both side surfaces of the lid body 5 in the width direction. , 13A are respectively formed, and the engagement projection 15 and the engagement recess 13A are engaged with each other.

[0032]

As can be understood from the above description, in the wiring unit cable joint box and the method for manufacturing the same according to the present invention, the cables are simply inserted into the cable aligning member so that the cables are aligned. Since it is held, the work of aligning and inserting a plurality of cables in the joint box can be easily performed.

Further, in the joint box for a wiring unit cable and the method for manufacturing the same according to the present invention, since the housing and the lid are integrally formed, the joint box can be formed and handled easily. In addition to having it, the work of aligning and inserting a plurality of cables in the joint box can be easily performed.

On the other hand, according to the joint box for the wiring unit cable and the method for manufacturing the same of the present invention, the cable is held in the aligned posture and the second cable aligning member is simply inserted into the cable aligning member. Since the cable alignment posture is also maintained by the member, it has the unique effect of being able to maintain the cable alignment posture more accurately, and facilitates the work of aligning and inserting multiple cables in the joint box. You can

Further, in the wiring unit cable joint box and the method of manufacturing the same according to the present invention, since the engaging recess and the engaging projection are engaged with each other, the housing and the lid are integrated. In addition to the unique effect that the joint box before the thermosetting resin is filled can be handled more easily as a result of maintaining the cable alignment posture more accurately, multiple cables are aligned and inserted into the joint box, and the resin is filled. Can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a preferred embodiment of a wiring unit cable joint box according to the present invention.

FIG. 2 is a structural explanatory view showing an integrated structure of a housing and a lid in another embodiment of the present invention.

FIG. 3 is a structural explanatory view showing an integrated structure of a housing and a lid in another embodiment of the present invention.

FIG. 4 is a structural explanatory view showing an integrated structure of a housing and a lid in another embodiment of the present invention.

[Explanation of symbols]

1 Wiring Unit Cable Joint Box 3 Housing 3A Open Side 5 Cover Lid 6 Bottom 9 Cable Alignment Member (Housing Side) 9 Cable Alignment Member (Lid Body Side / Second Cable Alignment Member) 9A Recess (Housing Side) 9A Recess (Lid side / second recess) 9B Communication part 11 Fixing part 13 Stop member 13A Engagement recess 10 Cable 15 Engagement protrusion 20 Hinge part 30 Wiring unit cable

Claims (5)

[Claims] 1. Joint processing of cable ends of a plurality of cables for a wiring unit in a joint box,
In a joint box for a wiring unit cable that seals the processing portion with a resin, a plurality of recesses are provided that allow the cables to be held in contact with the outer circumferential surface of the cable when the cables are inserted from the direction along the cable radial direction. A cable aligning member having a communicating portion provided so as to communicate both ends of the member along the same direction as the recess, and the cable aligning member is provided inside,
A housing in which a side surface through which the cable can be inserted from the cable radial direction is opened with respect to the cable alignment member, and an opposite side surface facing the opening side surface is opened and integrated with the housing. A joint box for a wiring unit cable, comprising: a lid body capable of closing a side surface. 2. The joint box for a wiring unit cable according to claim 1, wherein the lid body is integrally formed with the housing via a hinge. 3. The second cable aligning member having a second recess corresponding to the recess of the housing is provided on the lid, and the second cable aligning member is provided. Joint box for wiring unit cable. 4. The housing and the lid body are provided with locking means for locking the housing and the lid body in a closed state, according to any one of claims 1 to 3. Joint box for the wiring unit cable described. 5. A joint box for a wiring unit cable, comprising a cable alignment member having a recess capable of holding the outer circumference of each cable of a plurality of cables, and a housing and a lid which are distributed so that the recess is opened. The method of manufacturing a plurality of cables, wherein a plurality of the cables having cable ends connected to each other are arranged and held at their outer circumferences by the recesses, and the cable alignment member, the housing, and the lid are used to fix the ends of the cables. A wiring characterized by defining a stored connection space, then positioning the cable alignment member on the upper side, filling the connection space with resin from the cable alignment member side, and then solidifying the resin. Manufacturing method of joint box for unit cable.