JP2963918B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to a two-core or three-core VVF cable generally used as a power line, for example, by branching a power system in another direction or wiring for a switch to a main line VVF cable. For example, when connecting another VVF cable to obtain a branch line, the main line and the branch line are connected to each other with the same polarity without error, and the main line VVF cable is energized. The present invention also relates to a connector capable of performing branch connection with a simple operation.

[0002]

2. Description of the Related Art Conventionally, when a separate VVF cable is connected to such a VVF cable to obtain a branch line, it is necessary to identify the polarity of the core line. Alternatively, use a VVF cable with a display mark that indicates the position of the core wire on the negative electrode side on the outer surface of the cable. When connecting, when the VVF cable on the main line is energized, turn off the power in advance to prevent danger. After cutting, the energized wires of the respective core wires of both the VVF cable on the main line side and the branch side are exposed, and the energized wires of the same polarity of both VVF cables are put together into the metal sleeve inside the closed terminal with insulation coating. And pressurized from above to deform the metal sleeve and make a crimp connection. However, such a method has a problem that a power outage state is inevitable during construction in order to stop power supply, and the work is troublesome, resulting in poor work efficiency.

In order to solve such a problem, the applicant connects a branch-side VVF cable 3 ′ to a main-line-side VVF cable 3 as shown in FIG. 16 in the case of a two-core VVF cable. Connector was invented and proposed.
That is, the parts common to the embodiment will be described using the same reference numerals. A plurality of contacts 1 made of a highly conductive metal plate will be described.
And the main body 2 made of a synthetic resin. The contact 1 cuts off the respective insulating sheaths 31 and 31 and the insulating inner linings 32 and 32 of the main line side VVF cable 3 and the branch side VVF cable 3 ′, and supplies the current carrying wires 33. Two notches 1 contacting 33
1, 1 and 11 are formed at a predetermined interval D, and an insulating coating 14 is applied to the outer surface thereof. The main body 2 is a half-shaped main body component 2 connected by a folding portion 24.
a, 2b and a cover body 26 connected to the main body structure 2a by a connecting portion 25, and the main body structures 2a, 2b are separated by a predetermined distance D for inserting the two VVF cables 3, 3 '. Are formed in parallel with each other, and insertion holes 23 for a plurality of contacts 1 formed in the width direction of the cable by being shifted by a distance d between the respective conducting wires 33. It has a structure. When the cable has three cores, the number of contacts 1 is three, and the insertion holes 23 are formed at three places.

[0004] The work procedure is to overlap the main body components 2a and 2b, insert the VVF cables 3 and 3 'into the wiring holes formed by the grooves 21 and 22, and then insert one of the two holes. 23, the contact 1 is inserted and pressed, so that the positive-side conducting wire 33 of the main-line-side VVF cable 3 is cut into one notch 11 of the contact 1, and the branch-side VVF is inserted between the other notch 11. The current-carrying wires 33 of the cable 3 'are cut into each other to electrically connect both current-carrying wires.
Next, another contact 1 is inserted from the other insertion hole 23 and pressed, and similarly, the negative conducting wire 33 of the main VVF cable 3 and the negative conducting wire 33 of the branch VVF cable 3 ′ are electrically connected. Connection. Thereafter, the cover 26 is covered with the main body 2a to close the insertion hole 23.

[0005]

In the connector proposed by the present inventor, the pressing of the contact 1 can be easily performed by a one-handed operation using a crimping tool. The live part is in contact with the human body during operation because the top surface 1a of the contact 1 is covered with the insulating coating 14 and the contact 1 has a function of cutting and peeling the insulating coating of the cable. Even if the main-line-side VVF cable is energized, the work can be performed safely and without erroneous recognition of the polarity even by non-experts.
b, the gap between the contact 1 and the insertion hole 23, and the cut end face of the branch-side VVF cable 3 'inside the main body 2 are not completely airtight. Has a problem to be solved in that the metal conductors such as the current-carrying wires and the contacts are corroded by the invasion of moisture such as moisture, which causes accidents such as poor current conduction and heat generation.

Accordingly, the present invention proposes a simple waterproof structure based on the above-mentioned connector proposed by the inventor of the present invention. It is an object of the present invention to provide an inexpensive connector that can safely and promptly branch a wire even in the middle, has excellent waterproofness and weather resistance, has a simple structure, and is inexpensive.

[0007]

A connector according to the present invention for achieving the above object comprises a plurality of contacts 1 made of a highly conductive metal plate and a body 2 made of a synthetic resin. Is the main line side VVF cable 3 and the branch side VVF
Each of the insulating sheaths 31, 31 of the cable 3 'and the insulating endothelium 3
2 and 32, two cut portions 11 and 11 that are in contact with the conducting wires 33 and 33 are formed at a predetermined interval D, and the main body 2 is a half-split shape connected by a folded portion 24. Of the main body components 2a and 2b and a cover body 26 connected to the main body component 2a by a connecting portion 25. A predetermined portion for inserting the two VVF cables 3 and 3 'through the main body components 2a and 2b. The two grooves 21 and 22 which are arranged in parallel with a distance D from each other,
A plurality of contacts 1 ... insertion holes 23 formed by being shifted by an interval d therebetween, wherein at least one of the grooves 21 of the main body structure 2a and the main body structure 2b is formed. , 22 are provided with a waterproof sheet 4a having a deformable and adhesive surface whose surface is covered with release paper.

As another embodiment, the basic structure of a plurality of contacts 1 made of a highly conductive metal plate and a main body 2 made of a synthetic resin is the same as that of the above embodiment. A waterproof sheet 4c having a deformability and an adhesive property, the surface of which is covered with release paper, is provided on the side facing the main body 2.

In still another embodiment, the basic structure of a plurality of contacts 1 made of a highly conductive metal plate and a main body 2 made of a synthetic resin is the same as that of the above embodiment. A transparent shielding wall 28 is provided for protecting the cut end surface of the VVF cable 3 ′, which branches in one direction.
The inner surface side has a structure in which the surface is covered with release paper and has a deformability and an adhesiveness, and a transparent waterproof sheet 4b is attached.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In implementing a connector having such a configuration, the grooves 21 and 22 of the main body components 2a and 2b, the inner surface of the shielding wall 28, and the cover body 26 facing the main body 2 respectively. Each of the waterproof sheets 4a, 4b, and 4c adhered to the respective inner surfaces of the surface is mainly made of a polymer having excellent cold resistance and heat resistance such as, for example, a silicone resin.
A jelly-like composition having excellent adhesion is applied thickly on release paper 4s to form a sheet.
Together with a predetermined size and shape, the coated surface is adhered to each mounting surface, and a release paper 4 s is used during cable connection work.
Is removed. The waterproof sheet 4b mounted on the inner surface of the shielding wall 28 is a waterproof sheet having transparency as well as deformability, adhesion, cold resistance and heat resistance for confirming the polarity at the cut end surface of the VVF cable 3 '. Should be used. Alternatively, as a modified example, the waterproof sheets 4a and 4c
The jelly-like composition may be used by impregnating an open-cell sponge. Also in this case, release paper 4s until construction
It is desirable to be covered with.

The contact 1 is made of a copper alloy plate having high hardness,
The cross-sectional shape as viewed from the side is an inverted U-shape having two parallel pieces 1c, and the two pieces 1c are formed so that two cuts 11, 11 contacting the conducting wire 33 are formed in the piece 1c. The insulating coating 14 may be formed by baking an insulating paint on a base metal plate and then molding it into a predetermined shape, or by baking after molding. Alternatively, another member made of synthetic resin may be attached to the top surface 1a.

The interval D between the two cut portions 11 is made equal to the mutual interval (= D) between the arranged VVF cables 3 and VVF cables 3 ′. Notch 11 while undergoing plastic deformation
Is set to have a width smaller than the diameter of the conducting wire 33 so that the contact area of the contact portion is equal to or larger than the cross-sectional area of the conducting wire 33 when it comes into contact with the inner side surface of the conducting wire 33.

The connector main body 2 is composed of two main body components 2a and 2b of substantially the same shape and a half body, and a cover body 26. The shape of the body connected by the folding portion 24 and the connecting portion 25 is nylon, polyethylene, Molded integrally with resin material such as polypropylene. V is applied to the main body components 2a and 2b.
Groove 2 serving as a wiring hole through which VF cables 3 and 3 'are inserted
Reference numerals 1 and 22 are provided in parallel with a distance D between the centers. At this time, if the cable branch is a one-side branch, a shielding wall 28 is provided at the end of the groove 22 through which the branch-side VVF cable 3 'is inserted to protect the end surface of the branch line VVF cable 3'. . In the case of bidirectional branching, the VVF cable 3 ′ penetrates the main body 2, so that the shielding wall 28 can be easily removed in order to serve also in this case. It is sufficient to form a groove for the shielding wall 29 for fitting the shielding wall 28 and to make the shielding wall 28 detachable, for example, by fitting the shielding wall 28. In this case, by making the shielding wall 28 of another member a transparent body, the cut surface of the VVF cable 3 'can be seen through.

In the wiring work, after removing the release sheet of the waterproof sheet, the main line VVF cable 3 is inserted into the groove 21 of the main body 2b, the VVF cable 3 'is inserted into the groove 22. The ends are brought into contact with the shielding walls 28 and housed therein, respectively, and the main body 2a is overlaid on the main body 2b so as to be overlapped.
3 and pressed by the crimping tool A, the notch 1
Reference numeral 1 denotes a cable that cuts through an insulating outer sheath 31 and an insulating inner sheath 32 to capture an energizing line 33, and firmly presses and fixes the energizing line 33 from both sides while plastically deforming the energizing line 33. After the contact 1 is inserted, the cover body 26 is put on the back of the main body 2a to prevent rainwater from entering through the insertion hole 23.

At this time, the waterproof sheet 4a comes into close contact with the side surface of the VVF cable 3, 3 'so as to sandwich the cable,
Fill the gap between the cable side and the groove 21, groove 22,
The breaks of the insulation sheath and the insulation endothelium of the cable by the contact 1 are completely sealed. Further, the waterproof sheet 4b completely covers the cut end face of the VVF cable 3 'that branches off to make it watertight. Further, the waterproof sheet 4c is in close contact with the outer surface of the main body 2 of the connector, and completely seals the opening of the insertion hole 23. Therefore, in the connector of the present invention, the current-carrying portion is completely kept watertight for a long time from the outside.

In the above-mentioned energized portion, the energized wire 3
Since the contact area between the contact 3 and the contact 1 is set to be equal to or larger than the cross-sectional area of the conducting wire 33, the contact resistance is extremely low, and there is no problem such as heat generation. Further, the connector body 2 is an insulator, and the contact 1 is an insulating coating 14 on the surface.
Because it is completely insulated from the crimping tool A, accidents such as short circuit and electric shock do not occur even during energization, and the electrical connection between the main line and the branch line is completely completed in one operation. The process is completed without any error such as polarity.

[0017]

FIG. 1 is an exploded perspective view in which the structures of various embodiments of the present invention are collectively written for convenience of explanation and understanding. FIGS. 2 to 5 and FIG. FIGS. 6 to 8 are enlarged perspective views showing examples of the structure of three types of contacts 1, and FIGS. 9 and 10 are explanations during connection work. FIG. 11 is a sectional view showing the contact state of the contact at the time of completion of the operation, FIG. 12 is an external perspective view at the time of completion of the operation, FIG. 13 is a perspective view of a main part showing the fourth embodiment, and FIG. It is a perspective view of.

In the first embodiment, as shown in FIG. 1 and an exploded perspective view of a main part of FIG. 2, the main body 2 is made of an integrally molded product of a synthetic resin, and the waterproof sheet 4a is made of a cold and heat resistant material. A jelly-like composition composed mainly of an excellent silicone resin and having excellent deformability and adhesion is applied thickly on release paper 4s to form a sheet. And the application surface is adhered to the inner surfaces of the main body components 2a and 2b while leaving one side of the release paper. When performing the connection operation, the release paper is removed. Although the waterproof sheet 4a is attached to both the main body 2a and the main body 2b in the embodiment of this figure, either one of them may be used. Also, as shown in FIG.
May be mounted separately.

The contact 1 has a typical structure shown in FIGS. 6 to 8. In the first embodiment, a contact having the structure shown in FIG. 6 is used. The contact 1 is obtained by applying an insulating coating 14 on a copper alloy plate having high hardness such as phosphor bronze by baking coating of an insulating paint, and then press-molding it into the shape shown in the figure.

When the contact 1 is inserted through the insertion hole 23 (FIG. 9) and pressed by the crimping tool A (FIG. 10), the cut portion 11 cuts off the insulating outer cover 31 and the insulating inner cover 32 of the cable to catch the conducting wire 33. Then, it comes into contact with the conducting wire 33. Although the waterproof sheet 4a is cut by the contact 1, it has flexibility and adhesiveness, so that it adheres tightly to the contact 1 and the insulating sheath 31 of the cable, and seals the cut of the insulating sheath 31 to maintain good waterproofness. After the contact 1 is inserted, the cover body 26 is put over the back of the main body component 2a, and the hook 27a is hooked and fixed on the hook ring 27b to prevent rainwater or the like from entering through the insertion hole 23. FIG. 11 shows a cross section in this connection state. FIG. 12 shows the appearance after the work is completed.

FIG. 1 shows the general structure and the main structure of the second embodiment.
And FIG. This embodiment is applied to a case where the connector is used for one-sided branching. The main body 2 is made of an integrally molded product of a synthetic resin, and the shielding wall grooves 29 formed near the ends of the grooves 21 and 22 described above. Wall made of transparent body 2
8 to protect the cut end face of the branch-side VVF cable 3 '. The waterproof sheet 4b is mainly made of silicone resin having excellent cold resistance and heat resistance,
The jelly-like composition also having adhesiveness and transparency is applied thickly on release paper 4s to form a sheet, and cut into a predetermined size and shape together with release paper 4s, It is adhered to the inner surface of the shielding wall 28 while leaving one side of the release paper.

At the time of construction, the groove 21 of the main body structure 2a is used.
The VVF cable 3 and the VVF cable 3 'in the groove 22 are placed on the waterproof sheet 4b with the cut end surfaces thereof abutted against the waterproof sheet 4b from which the release paper has been removed. Is folded at the portion of the folding portion 24, and the hook 20b is hooked on the hook ring 20a to be polymerized.
Subsequent working steps are the same as in the first embodiment. This second embodiment is characterized in that the cut end face of the VVF cable 3 'on the branch side is completely waterproof. The contact 1 of this embodiment uses the same contact as that of the first embodiment.

FIG. 1 shows the general structure and main structure of the third embodiment.
And FIG. In this embodiment, the main body 2 is made of an integrally molded product of a synthetic resin, and the waterproof sheet 4c is formed into a sheet by thickly applying a jelly-like composition similar to that of the first embodiment on release paper 4s. It is cut into a predetermined size and shape together with the release paper 4s, and the inner surface of the cover body 26 is
Affixed with one side of the release paper left. When the cable connection work is performed, the grooves 21 and 22 of the body
The VVF cables 3 and 3 'are placed on the main body 2a and the main body 2b are folded at the folded portion 24, and the hook 20b is hooked on the hook ring 20a to be superposed. Subsequent working steps are the same as in the first embodiment. In the third embodiment, a waterproof sheet 4 is provided on the upper and outer surfaces of the main body 2a.
c is in close contact, the insertion hole 23 is hermetically sealed, and has a feature that rainwater or the like can be prevented from entering through the insertion hole 23.

The three embodiments described above are divided for the purpose of clarifying the description, and the case where the waterproof sheet is applied to each one is described. In order to expect excellent waterproofness, waterproof sheets may be applied at three places at the same time. In the first and third embodiments described above, it is needless to say that the shielding wall 28 is provided at the end of the wiring hole 22 in the case of the one-side branch. Further, as a modified example, the jelly-like composition can be used by impregnating a sponge of open cells without directly applying the jelly-like composition to the release paper 4s. Also in this case, the release paper is necessary to adhere to unnecessary parts and maintain adhesiveness, but has a feature that it is easy to handle during manufacture (see FIG. 15 as another modification of the first embodiment). 4d).

FIG. 13 shows a schematic structure of the fourth embodiment. This embodiment is a connector used for branch connection of a three-core VVF cable.
Each of the contacts is used, and each of the contacts is displaced in the longitudinal direction of the contact corresponding to the distance between the core wires of the cable. The contacts used in this case are:
As shown in FIG. 7, after molding, the top surface 1a is painted.
Only the insulating coating 14 is provided.
Further, for the sake of convenience, the waterproof sheet is described as an example of the waterproof sheet 4c attached to the cover body 26, which is a visible portion, but actually the inner surfaces of the main body components 2a and 2b may be
It is also adhered to the inner surface of the shielding wall 28.

FIG. 14 shows a schematic structure of the fifth embodiment. This embodiment is a connector used for branch connection of a two-core VVF cable, and a contact used in this case has one narrow width and the other width as shown in FIG. It is wide and the top surface 1a is trapezoidal. The insulating coating 14 has a structure in which another member made of synthetic resin is adhered. In this case, by forming the insertion hole 23 of the main body 2 in the same shape as the top surface 1a, it has a feature that the direction can be given when the contact 1 is inserted. In this embodiment as well, the waterproof sheet is shown as a waterproof sheet 4c adhered to the inner surface of the cover 26, but this waterproof sheet 4c is also jelly like the other modified examples of the first embodiment. The composition may be used in the form of impregnating an open-cell sponge.

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 the structure of these embodiments. The invention achieves the object of the invention and can be carried out with appropriate modifications within a range having the following effects.

[0028]

Since the connector of the present invention is constructed as described above, the waterproof sheet is excellent in deformability and adhesion, so that each VVF cable on the main line side and the branch side and each branch of the contact. The connection portion is completely covered with the waterproof sheet and becomes watertight, and the waterproofness is complete. Therefore, even when the connector is used outdoors, there is an effect that stable insulation performance and current-carrying performance can be maintained for a long period of time.

With reference to the polarity indication of the VVF cable, the VVF cables on the main line side and the branch side are positioned with respect to each other with a connector body made of an insulating material, and a contact having surface insulation is simply press-fitted into the VVF cable. With a simple operation, the branch line can be connected safely and securely without interrupting the current even during energization.

When the insulating coating of the contact is formed by painting, it is not necessary to fix a dedicated insulating material as in the conventional example. Therefore, it is possible to remarkably reduce the cost of the material and the cost of the contact, and it is possible to manufacture the contact at a lower cost than the conventional example.

In addition, since the number of components is small and the main body has a simple structure of an integrally molded product, it can be provided at low cost, and the wiring work is simple, so that there is an effect that the cost for the construction can be reduced. It was reached.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating the structure of various embodiments of the present invention.

FIG. 2 is an exploded perspective view illustrating a main structure of a main body according to the first embodiment.

FIG. 3 is an exploded perspective view illustrating a main structure of a main body in a modification of the first embodiment.

FIG. 4 is an exploded perspective view illustrating a main structure of a main body according to a second embodiment.

FIG. 5 is an exploded perspective view illustrating a main structure of a main body according to a third embodiment.

FIG. 6 is an enlarged perspective view showing the structure of a contact.

FIG. 7 is an enlarged perspective view showing the structure of a modified example of a contact.

FIG. 8 is an enlarged perspective view showing the structure of another modification of the contact.

FIG. 9 is an explanatory view when the contact is inserted during the operation.

FIG. 10 is an explanatory view at the time of press-fitting a contact during operation.

FIG. 11 is a sectional view of a connector at a VVF cable branch part.

FIG. 12 is an external perspective view of a VVF cable branch portion when work is completed.

FIG. 13 is an external perspective view showing a schematic structure of a fourth embodiment.

FIG. 14 is an external perspective view showing a schematic structure of a fifth embodiment.

FIG. 15 is an exploded perspective view illustrating the structure of a main part of a main body according to another modification of the first embodiment.

FIG. 16 is an explanatory perspective view showing a schematic structure of a conventional cable branching connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 2 Main body 2a Main body constituent body 2b Main body constituent body 21 Groove 22 Groove 23 Insert hole 24 Folding part 25 Connecting part 26 Cover body 28 Shielding wall 3 VVF cable on main line side 3 'VVF cable on branch side 31 Insulating sheath 32 Insulating inner skin 33 energizing line 34 polarity indication mark 4a waterproof sheet 4b waterproof sheet 4c waterproof sheet 4d waterproof sheet 4s release paper A crimping tool

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-166373 (JP, U) JP-A-6-60963 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) H01R 4/24-13/52

Claims (3)

(57) [Claims] 1. A plurality of contacts (1) made of a highly conductive metal plate and a main body (2) made of a synthetic resin, wherein said contacts (1) are connected to a main line side VVF cable (3) and a branch side. The insulation sheaths (31), (31) and the insulation endothelium (32) of the VVF cable (3 '),
(32), and two notches (11) and (11) that are in contact with the current-carrying wires (33) and (33) are formed at a predetermined interval (D). ) Consists of a half-split body component (2a) and (2b) connected by a fold (24) and a cover (26) connected to the main component (2a) by a connection (25). Two grooves (21) arranged in parallel at a predetermined interval (D) for inserting the two VVF cables (3) and (3 ') into the main body components (2a) and (2b). , (22), and each conducting wire in the width direction of the cable
(33) a connector having an insertion hole (23) for a plurality of contacts (1) formed by being shifted by an interval (d) between the body component (2a) and the body. A connector in which at least one of the grooves (21) and (22) with the structural body (2b) is provided with a waterproof sheet (4a) having a deformable and adherent surface whose surface is covered with release paper. 2. A plurality of contacts (1) made of a highly conductive metal plate and a main body (2) made of a synthetic resin, wherein said contacts (1) are connected to a main line side VVF cable (3) and a branch side. The insulation sheaths (31), (31) and the insulation endothelium (32) of the VVF cable (3 '),
(32), and two notches (11) and (11) that are in contact with the current-carrying wires (33) and (33) are formed at a predetermined interval (D). ) Consists of a half-split body component (2a) and (2b) connected by a fold (24) and a cover (26) connected to the main component (2a) by a connection (25). Two grooves (21) arranged in parallel at a predetermined interval (D) for inserting the two VVF cables (3) and (3 ') into the main body components (2a) and (2b). , (22), and each conducting wire in the width direction of the cable
(33) and a connector (26) formed with a plurality of contacts (1) ... insertion holes (23) formed by being shifted by an interval (d), wherein the cover body (26) comprises a main body ( A connector in which a waterproof sheet (4c) having a deformability and an adhesive property, the surface of which is covered with release paper, is attached to the side opposite to 2). 3. A plurality of contacts (1) made of a highly conductive metal plate and a main body (2) made of a synthetic resin, wherein said contacts (1) are connected to a main line side VVF cable (3) and a branch side. The insulation sheaths (31), (31) and the insulation endothelium (32) of the VVF cable (3 '),
(32), and two notches (11) and (11) that are in contact with the current-carrying wires (33) and (33) are formed at a predetermined interval (D). ) Consists of a half-split body component (2a) and (2b) connected by a fold (24) and a cover (26) connected to the main component (2a) by a connection (25). Two grooves (21) arranged in parallel at a predetermined interval (D) for inserting the two VVF cables (3) and (3 ') into the main body components (2a) and (2b). , (22), and each conducting wire in the width direction of the cable
(33) are provided with insertion holes (23) for a plurality of contacts (1), which are formed by being shifted by an interval (d), and are provided at ends of the grooves (22). A transparent shielding wall (28) is provided to protect the cut end surface of the one-branched VVF cable (3 '), and the inner surface of the shielding wall (28) is covered with release paper, and its deformability and adhesion are improved. And a transparent waterproof sheet (4b)
Is attached to the connector.