JP2002008745A - Waterproof cover of connector for wire cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide water-proof cover for a connector capable of water-tightly covering a main body part of the connector and the root of the wire cable extended from the main body to achieve complete waterproof. SOLUTION: This waterproof cover used to water-tightly cover the connector A of the wire cable for connecting two-conductor or three-conductor cables, is composed of two synthetic resin cover halves 50 and 50 respectively having storage recessed parts 51 for storing a main body part of the connector A at a central part, and take-out ports 52 and 52 for taking out the wire cables 3 and 3' extended from the connector A at both ends, these two cover half bodies 50 and 50 are tightly integrally connected in a state of facing the storage recessed parts 51 to each other, and the taking-out ports 52 and 52 are provided with the jelly-like waterproof material 53 of variable shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-core wire in which two or three insulated wires, each of which is a single wire generally used as a power line and is covered with an insulating inner sheath, are arranged in parallel, and the outer periphery thereof is covered with a sheath. Alternatively, two or three insulated wires in which a three-core VVF cable or a multi-core wire is coated with an insulating inner sheath are arranged in parallel, and a two-core or three-core captire cable whose entirety is coated with an outer sheath is connected and branched. The present invention relates to a waterproof cover used to cover a connector in a watertight manner.

[0002]

2. Description of the Related Art Conventionally, a VVF for connecting another 2-core or 3-core VVF cable to a 2-core or 3-core VVF cable.
A cable connector is known, for example, from Japanese Patent No. 2913000 previously filed by the present applicant. Such a connector has two fitting grooves for receiving a VVF cable, and a metal contact is pressed into the VVF cable inserted into each of the fitting grooves from the outer skin without peeling the inner and outer skins. Thus, the connection between the same-polarity core wires is attempted.

[0003]

This connector is extremely effective as a connector capable of securely connecting a two-core or three-core VVF cable by a simple operation. However, this connector is used under floors, basements, outdoor and agricultural greenhouses, and the like. It could not be said that sufficient waterproofing considerations were made for use in humid places.

[0004] Accordingly, the present invention provides a V
When the VF cables are connected to each other, the captire cables are connected to each other, or the VVF cable and the captire cable are connected to each other, the main body portion of the connector and the protruding root portion of the cable extending from the main body are further covered in a watertight manner to achieve reliable waterproofing. It is a primary object of the present invention to provide a waterproof cover for a connector that can be used.

[0005]

In order to achieve the above object, the present invention takes the following measures. That is, in the waterproof cover of the present invention, the connector A for the electric wire cable, which is adapted to connect a two-core or three-core cable, is water-tightly covered, and the main body of the connector A is provided at the center. Two half-shaped synthetic resin cover members 50, each having a storage recess 51 for storing therein, and having outlets 52, 52 at both ends for taking out the electric cable 3, 3 'extended from the connector A, The two cover components 50, 50 are formed so as to be tightly and integrally connected with the storage recesses 51 facing each other.
Each of the outlets 52 has a structure in which a jelly-like waterproof material 53 whose shape can be freely changed is arranged and formed.

The present invention also covers a wire cable connector A for connecting a two-core or three-core cable in a watertight manner, and has a storage recess for storing a main body of the connector A in the center. 51 and connectors A at both ends.
A cylindrical cover member 50 ′ made of synthetic resin having outlets 52, 52 for taking out the electric cables 3, 3 ′ extending from the cover member 50 ′, and an upper surface opening of the cover member 50 ′ is watertight. A jelly-like waterproof material 53 whose shape can be freely changed is arranged and formed in each of the outlets 52, 52.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The jelly-like waterproof material 53 is adapted to be pressed against from the outside according to the shape of a pressed object.
Here, a jelly-like or gel-like substance having physical properties that can be freely deformed along the shape of the electric wire but does not flow and deform in a natural state is used. As this material, for example, silicon jelly is one of the preferable materials, but polymer jelly of styrene and ethylene is easy to mold and easy to adjust the hardness from the viewpoint of price, and is harmless under the Food Sanitation Law. It is suitable because it can be insert-molded and can be co-extruded.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
First, an example of a VVF cable connector A to which the waterproof cover of the present invention is used will be described below with reference to FIGS. Reference numeral 1 indicates a contact formed in a substantially inverted U-shape in side view by press-forming a brass plate rich in electrical conductivity. Each substantially parallel piece 1 of this contact 1
a, 1a, the cuts of the insulating sheath 31 and the insulating endothelium 32 of the two-core VVF cable 3, 3 'to be connected are cut, and two notches 11, which are inserted into and contact one of the core wires 33, 33 in each cable. 11 are formed at a predetermined interval D, and a recess 12 is provided at an intermediate portion for separating the cuts 11. The cut portions 11 are slightly inclined upward so as to be pressed in a direction to separate a core wire to be connected from another core wire in the cable when pushed into each cable. The contact 1 has an insulating resin plate 14 adhered to the upper surface of the connection bottom portion 12.

The connector body 2 is integrally formed of an insulating resin material as a whole. The connector main body 2 includes two main body components 2a and 2b of substantially the same
6 and each of the main body components 2a, 2b
Is formed with two fitting grooves 21 and 22 for inserting and fitting the VVF cable 3 on the concatenating line side (branched side) and the VVF cable 3 ′ for branching at a predetermined interval E in parallel. Have been. One main body 2a is provided with two insertion holes 23, 23 for inserting the contacts 1 respectively, and is connected to the other body 2b by a foldable portion 24 on one side so as to be freely foldable. These body components 2
a and 2b are provided on the free end side with the engagement piece 20b and the engagement hole 20a.
And are fitted to each other. The lid 26
Is the main body component 2a via the flexible connecting band 25.
And can be folded with respect to the contact insertion surface of the main body structure 2a. The lid 2
6 are engaging holes 27a provided in the side surface of the main body 2a.
Are provided with engaging claws 27.

As shown in FIG. 12, the widths of the fitting grooves 21 and 22 are substantially the same as the widths W of the two VVF cables 3 and 3 'in the wide direction, respectively. The width is such that it can be inserted without a gap, and the facing width of the fitting grooves 21, 21, 22, 22 in the folded posture in which the two main body components 2 a, 2 b are fitted (the depth of the two fitting grooves facing each other). Sum) is approximately the same as the width w of the narrow side of each of the cables 3 and 3 ', and is formed to a width that allows the cables to be sandwiched without gaps. The space between these two fitting grooves 21 and 22, that is, the space E between the center lines is formed to be substantially equal to the space between the two cut portions 11 and 11 of the contact 1, that is, the space D between the center lines. I have. Further, as shown in FIG. 9, two insertion holes 23 for inserting the contact 1 are provided.
The contact 1 has a shape conforming to the plane shape, and is formed in a size suitable for inserting and temporarily holding the lower half of the contact 1. The two insertion holes 23 are formed so as to be shifted from each other in the width direction of the fitting groove by an interval of a horizontal pitch between two core wires in each cable.

Using the above connector, first, as shown in FIG. 12, the two-core VV on the wired side (branch line side / branch line side) is used.
Main body components 2a, 2b with the F cable 3 covered
The fitting groove 21 of any one of the components (here, 2b)
The VVF cable 3 ′ for branching is inserted into the adjacent fitting groove 22, and the line on the positive electrode side or the negative electrode side, which has been confirmed by the cut end face, is selected in the direction that matches the line on the positive or negative electrode side on the main line side. 13 and then the other component (here 2a) is folded over as shown in FIG.
4, and is pressed on it by being folded, and the engaging claw piece 20 b and the engagement hole 20 a are mutually fitted on the other side.

Next, as shown in FIG. 14, the upper end surface of the contact 1 is pressed by a suitable pressing tool C and pushed into the contact insertion hole 23 as shown in FIG. As shown in FIG. 16, the lid 26 is bent from the connecting band 25 so as to cover the outer side surface of the contact 1, and the engaging claws 27 formed at the respective corners are formed on the main body constituting body 2a. An engagement hole 27a is engaged and connected.

The pressurized contact 1 makes electrical contact with the core wires 33, 33 on the same pole side of the cables 3, 3 'inside the connector body 2, as shown in FIGS. At this time, since the cut portions 11, 11 are formed to be inclined in the direction of separating the left and right core wires 33, 33 of the respective cables 3, 3 'into left and right, core wires having different poles in the same cable, That is, the core wire contacting the contact and the other core wire are separated from each other to the left and right, so that safety can be improved. In this way, the VVF cable 3 'can be branched from the already-wired or main-line-side VVF cable 3'.

The waterproof cover according to the present invention covers the connector A thus assembled in a more water-tight manner. FIGS. 1 to 3 show a first embodiment. In this embodiment, the waterproof cover of the present invention is provided with a housing recess 51 for housing the main body of the connector A at the center, and an outlet for taking out the electric cable 3, 3 ′ extending from the connector A at both ends. It is formed by two synthetic resin cover members 50, 50 having substantially the same shape and having a half shape and having 52. The two cover members 50, 50 are formed in a substantially quadrangular shape in a plan view, and are integrally formed so as to be folded back via a hinge portion 54 so that they can be closely fitted with the storage recesses 51, 51 facing each other. ing. Further, in the folded position, the engagement claws 55 provided on the one cover structure 50 are formed so as to engage with the engagement holes 56 of the other cover structure 50 so that the fitting posture can be maintained. In this embodiment, it is configured such that the screws 57 can be further firmly connected in this fitting posture. However, the screws 57 may be omitted if the watertightness is sufficient by the connection between the engagement claws 55 and the engagement holes 56.

Further, in each of the outlets 52, a jelly-like waterproof material 53 having flexibility and deformability that can be freely changed in form is arranged and formed. The jelly-like or gel-like waterproof material 53 can be freely deformed along the shape of the electric wire when pressed from the outside, but a material having physical properties that does not flow and deform in a natural state without external pressure is used.
As this material, for example, as described above, a polymer jelly of styrene and ethylene is preferable. In this embodiment,
A structure is shown in which a container-like base 58 made of a thin soft rubber or a soft resin is filled with the waterproof material 53 and attached to the outlet 52. As shown in FIGS. 5 and 6, for example, the base 58 and the waterproof material 53 have a lower half formed of a rubber member base 58 and an upper half formed of a jelly-like waterproof material 53.
Or a form formed only of the jelly-like waterproof material 53 without using the base 58. Also, two cover components 50,
A thin waterproof packing 59 made of rubber or the like is interposed at the joining end face of the joint 50.

In the above waterproof cover, as shown in FIG. 2, the main body of the contact A previously assembled is housed in the housing recess 51 of one of the cover members 50, and at the same time the electric wire cables 3 and 3 '. Is applied to the outlets 52, 52, and is pressed against the waterproof material 53 to be embedded. Next, the other structural body 50 on the right side in the figure is inverted and superimposed via the hinge portion 54, and is fixed with screws 57 as shown in FIG. As a result, the body of the connector A is sealed inside the waterproof cover, and the periphery of the electric cable 3, 3 'is tightly sealed by the waterproof material 53 at the outlet 52, whereby complete watertightness of the connector A is achieved. You.

As shown in FIG. 4, the waterproof packing 59 disposed between the joining end surfaces of the two cover components 50, 50 is a container-like base for accommodating a jelly-like or gel-like waterproof material 53. It is also possible to form it integrally with 58. Although not shown, the waterproof packing 59 sandwiched between the joint end surfaces and the jelly-like or gel-like waterproof material 53 may be integrally formed without forming the container-like base 58. .

FIGS. 7 and 8 show another embodiment of the waterproof cover according to the present invention. The waterproof cover has a recess 51 for accommodating the main body of the connector A at the center, and the connector is provided at both ends. A cylindrical cover member 50 ′ made of synthetic resin having outlets 52, 52 for taking out the electric cables 3, 3 ′ extended from A, and an upper surface opening of the cover member 50 ′ is watertight. The cover 60 is formed by a cover 60 which is closed. The lid 60 is screwed to the cover component 50 'with screws 61 and 62. A jelly-like waterproof material 53 whose shape can be freely changed in the same manner as in the first embodiment is provided at each of the outlets 52, 52 with a container-like base 58.
Is filled. Reference numeral 63 denotes an O-ring shaped rubber packing. According to this embodiment, the connector body A and the VVF cables 3, 3 'can be sandwiched from above and below to stably pack them by screwing the lid body 60 to the cover constituting body 50', and the watertightness inside can be reduced. Can be held to a high degree. Also in this embodiment, the waterproof material 53 is shown as being housed in the container base 58, but the waterproof material 53 is bonded to the cable outlets 52, 52 without the base 58. Needless to say, it can be implemented as a product.

Although the embodiments which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to these embodiments and modifications. For example, the two cover components 50, 50 described in the first embodiment may be formed separately from each other and connected by screws or the like. Further, one of the two half-structured cover members 50, 50 referred to in the first embodiment is formed in a deep container shape, and the other is formed in a shallow container shape or a substantially flat cover shape. You may. In addition, the present invention has the constituent features, achieves the object of the present invention, and can be appropriately modified and implemented within a range having the following effects. Further, one or both of the cover components may be formed of a transparent material so that the state of the content connector can be visually recognized from the outside.

[0020]

Since the present invention is constructed as described above, it is possible to completely seal the connector body portion and the extension root portion of the electric cable extending from the connector body, and to secure a high watertightness. It can be achieved by a simple operation of fitting the connector into the cover structure and putting the other cover structure or lid on, so that the work on site can be done easily and quickly, without requiring advanced watertight technology. It has the effect that it can be used for

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a waterproof cover according to the present invention.

FIG. 2 is a perspective view showing a state in which a connector is stored in the waterproof cover.

FIG. 3 is a perspective view showing a state in which the connector is sealed by the waterproof cover.

FIG. 4 is a perspective view showing another embodiment of the waterproof packing and the base in the waterproof cover.

FIG. 5 is a sectional view showing another embodiment of the waterproof packing material and the base in the waterproof cover.

FIG. 6 is a sectional view showing still another embodiment of the waterproof packing material and the base in the waterproof cover.

FIG. 7 is a perspective view showing another embodiment of the waterproof cover according to the present invention, in which only the cover structure is shown.

FIG. 8 is a partial cross-sectional front view of the waterproof cover according to the embodiment of FIG. 7;

FIG. 9 shows an example of a connector used in the present invention, and is an overall perspective view of a back side of a main body before a contact is inserted.

FIG. 10 is a perspective view of the inner surface side of the main body of FIG. 9;

FIG. 11 is a perspective view of the back side of the main body, showing a state in which only the tip portion of the contact is temporarily inserted.

12 is a perspective view of the inner surface side of the main body of FIG. 9 in a state where a two-core VVF cable is inserted into a fitting groove.

FIG. 13 is a perspective view showing a state in which the left and right main body components are folded and a cable is fitted.

FIG. 14 is a perspective view showing a process of press-fitting a contact with a press-fitting tool in the state of FIG.

FIG. 15 is a perspective view showing a state where a contact is press-fitted.

FIG. 16 is a perspective view showing a state where the connection of the cable is completed with the cover body covered.

FIG. 17 is an enlarged sectional view showing a contact inserted state.

FIG. 18 is an internal perspective view showing a contact insertion state.

DESCRIPTION OF SYMBOLS 21 Fitting groove 22 Fitting groove 1 Contact 3 Electric cable 3 'Electric cable 50 Cover structure 50' Cover structure 51 Storage recess 52 Outlet 53 Waterproof packing material 60 Lid A Connector

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hisakura Yamagata 1-3-5, Tsurumi-ku, Tsurumi-ku, Osaka-shi Nichifu Terminal Industry Co., Ltd. (72) Inventor Takeshi Kagida 1-3-58, Tsurumi-ku, Tsurumi-ku, Osaka-shi No. F-term in Nichifu Terminal Industry Co., Ltd. (reference) 5G355 AA03 BA02 BA20 CA06 CA26 5G357 DA02 DB01 DC01 DD02 DD06 DD14 DE02 DE10 DG05 5G375 AA02 BA26 BB48 CA02 CA13 CB10 DB23

Claims (2)

[Claims] An electric cable connector (A) for connecting a two-core or three-core cable in a watertight manner, and a housing for accommodating a main body of the connector (A) in a center portion. A half-split type with a recess (51) and with outlets (52) and (52) for taking out the electric cables (3) and (3 ') extending from the connector (A) at both ends. It is formed by two synthetic resin cover components (50), (50), and these two cover components (50), (50) can be tightly and integrally connected with the storage recess (51) facing each other. Is configured as
A waterproof cover for an electric wire cable connector in which a jelly-like waterproof material (53) whose shape can be freely changed is arranged and formed in each of the outlets (52), (52). 2. An electric wire cable connector (A) adapted to connect a two-core or three-core cable in a water-tight manner, wherein a central portion accommodates a main body of the connector (A). A synthetic resin cylinder provided with a recess (51) and with outlets (52) and (52) at both ends for taking out the electric cables (3) and (3 ') extending from the connector (A). The cover member (50 ') is formed by a cover member (50') and a lid member (60) which closes an upper surface opening of the cover member (50 ') in a watertight manner. Is a waterproof cover for an electric wire cable connector on which a jelly-like waterproof material (53) whose shape can be freely changed is arranged and formed.