JP3013162B2 - Relay connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a two or three core wire in which a single conducting wire generally used as a power line is insulated and coated in parallel, and two or three core wires of which are covered with an outer skin. Regarding a relay connector for detachably connecting two 3-core VVF cables to each other, when connecting, the same polarity conducting wires of the connected cable and the connection cable are connected without error using a relay connector of the same structure. The present invention relates to a relay connector that can be safely and reliably attached to cables with extremely simple work even if both cables are in a live state.

[0002]

2. Description of the Related Art Conventionally, when connecting such a VVF cable to another VVF cable and extending the same, simply remove the insulation of the VVF cable on the main line side, and take out the positive side core wire and the negative side core wire respectively. Similarly, after removing the insulation from the VVF cable on the extension line side to expose the conduction line, the conduction line of the main line and the conduction line of the extension line are put together in the closed end insulating cap with the same polarity. The metal sleeve is inserted into the metal sleeve, and then pressurized by a pressure tool to deform the metal sleeve by pressurization and press-fit connection. If necessary, an insulating tape is wound. Or,
In the case of frequent attachment / detachment, each VVF on the main line side and extension line side
A pair of connectors is attached to each cable, and these connectors are connected to each other.

[0003]

In the former method as described above, when the main line is a live line, the power supply must be stopped before the electric wire connection work because of the necessity of electric shock prevention. In the meantime, a power outage is unavoidable, and the work is very troublesome, so that the construction time is long and the work efficiency is low. Further, there is a drawback that it is very difficult to attach and detach after connection. On the other hand, in the latter method of using a connector, when the cable is in a live state, it is necessary to stop the power supply and attach it.When connecting, it is necessary to combine the paired connectors without fail. However, there is a problem to be solved that it is not rational to manufacture a connector.

In order to solve the above-mentioned problems of the conventional relay connector, the present invention requires a connector mounting operation without removing the VVF cable coating even if power is supplied. It is an object of the present invention to provide a relay connector which can be safely and quickly performed each time, and which can be easily extended with one kind of connector having a simple structure without erroneous connection of polarity. I do.

[0005]

SUMMARY OF THE INVENTION To achieve the above object the relay connector of the present invention, will be described with reference to symbols used at the description of the appearance and structure of the embodiment, two V
A relay connector to be used for connecting the VF cable 3, Ri Do from highly conductive metal plate, and a connection partner
A contact 1 in contact with the contacts, a synthetic resin body 2 which, the contact 1 includes a tab portion 11 which contacts the contact of the connection partner, a receptacle portion 12 for gripping the tab portion 11 of the mating, the Contact 1 is
Cut the insulating outer skin 31 and the insulating inner skin 32 of the VVF cable 3
And came into contact with the conducting wire 33 to be connected to the cable.
Sometimes, the contact area is larger than the cross-sectional area of the conducting wire 33.
With a notch width smaller than the diameter of the conducting wire 33
In the pressing direction of the VVF cable 3
Energizing wire 3 comprising a cut portion 13 inclined at an angle
3 and the connecting portion is formed with, the body 2 is Ri Do from the body cover 2b for covering the connecting portion between the main body base 2a and VVF cable 3, the main body base 2a, the connection partner
Receiving the tip of the relay connector and contacting the contact 1
The gutter-shaped cross section that forms the lower half of the tip for storing
Forming a base tip lower part 21 and an upper half of the tip part
A base that allows the base lower end portion 21 to be inserted thereinto.
Has a gutter-shaped cross section larger than
To connect the relay connector of the connection partner to the center of the upper surface of the end
The hook 261 and the tail 262 are elastically supported.
And a hook 26a composed of a leg 263
Base tip upper part 22 and groove for inserting VVF cable 3
25, and cut off the insulating sheath 31 of the VVF cable 3 and
VV having a partition wall 29 for isolating parallel conducting wires 33
Holds and stores the connection between F cable 3 and contact 1
The cable connecting portion 23 is provided at the center of the lower surface with the hook 26a.
Through a base 24 having a hook engaging portion 26b that engages with
And the contact 1 has a VVF
After crimping connection of the conducting wire 33 of a predetermined polarity of the cable 3,
Closed by the cover 2b to make the relay connector mounted
When connecting the VVF cable (3),
Use the relay connector of the
And make them face each other, and
Into the upper end 22 of the base.
Contact 1 with a plurality of contacts 1 of the other party .
It has become .

A relay connector according to a second aspect of the present invention is a
A relay connector used for connecting a VVF cable 3 comprising a contact 1 made of a highly conductive metal plate and in contact with a contact of a connection partner, and a main body 2 made of a synthetic resin. 1 is formed with a tab portion 11 which comes into contact with a contact of a connection partner and a connection portion which is connected to a conduction line 33 of a VVF cable, and the main body 2 covers a connection portion between the main body base 2 a and the VVF cable 3. And a main body base 2a.
A base lower end 21 having a gutter-like cross-section for receiving a distal end of a relay connector to be connected and forming a lower half of the distal end for accommodating the contact 1, and an upper half of the distal end. A hook 26a for connecting a relay connector of a connection partner is provided at the center of the upper surface of the tip, having a gutter-shaped cross section larger than that of the base lower end 21 so that the base tip lower portion 21 to be formed can be inserted into the inside. Base upper end 22 and groove 25 for inserting VVF cable 3
And a cable connecting portion 23 for holding and housing a connecting portion between the VVF cable 3 and the contact 1 is integrally formed via a base 24 having a hook engaging portion 26b which engages with the hook 26a at the center of the lower surface. The conductor 1 having a predetermined polarity of the VVF cable 3 is connected to the contact 1 by crimping and then closed by the main body cover 2b and the relay connector is mounted. Using a relay connector, one of the relay connectors is turned upside down so as to face each other,
1 are inserted into the upper end 22 of the base of the other party, respectively, so that the plurality of contacts 1 and the plurality of contacts 1 of the other party are brought into contact with each other.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In implementing a relay connector having such a configuration, the contact 1 is harder than the soft copper used for the conducting wire 33 of the VVF cable 3 such as a hard copper alloy plate. It is preferable to use a material having high conductivity and excellent conductivity. Tab part 1 of contact 1
Reference numeral 1 denotes a single flat plate, and a receptacle 12 provided on the way of extension of the tab 11 includes a contact 1
It protrudes from both side edges and bends in a hook shape, and has a shape in which the end portion has elasticity to grip the tab portion 11 to be connected. The cut portion 13 provided at the extension end, which comes into contact with the conducting wire 33 of the VVF cable, has a sharpened tip, and cuts the coating of the pressed VVF cable to cut the conducting wire 33 plastically. Contact in the gap between the parts. Therefore,
The thickness of the contact 1 and the width of the cutout 11 are set such that the contact area of the contact portion between the contact 1 and the conducting wire 33 is equal to or larger than the cross-sectional area of the conducting wire 33.

Further, it is preferable that the cutting direction of the cut portion 13 is such that at the time of contact between the core wire and the contact, the parallel adjacent core wires of the cable are separated from each other. However, in the case of a three-core VVF wire, the contact in contact with the center core wire may be simply cut in the vertical direction.

A contact having the above structure is employed, and a contact having the same structure is used as a connection partner. Can be extended connection. At this time, due to the elasticity of the receptacle section 12, the opposing tab section 11 is pressed into contact with its own receptacle section 12 and an extension of the tab section 11 with a sufficient contact area. Therefore, the contact resistance between the interconnected contacts 1 can be extremely reduced. Further, since the contact between the contact 1 and the conducting wire 33 is performed with the VVF cable covered, the mounting work of the relay connection is possible even during energization.

The main body base 2a and the main body cover 2 of the main body 2
b is individually molded integrally with a resin material such as nylon, polyethylene, or polypropylene. Base tip lower part 21, base tip upper part 22, and cable connection part 2 of main body base 2a
3 are formed integrally with each other via a base portion 24. A plurality of contacts 1 are housed inside a base distal end lower portion 21 and a base distal end upper portion 22. A plurality of ducts for connecting to the plurality of contacts 1 are formed. Cable connection part 23
A passage is formed through the base 24 and leading to a duct through which the contact 1 is inserted. The base end of this passage is a guide 27a for positioning the contact 1. Further, a groove 25a into which the VVF cable 3 is inserted from the guide portion 27a communicates with the outside.

A hook portion 28a for fixing the cover 2b is formed on a side surface of the cable connection portion 23. The hook engaging portion 28b of the cover 2b is hooked to fix the cover. A hook 26 for connecting a relay connector of a connection partner is provided at the center of the upper surface of the upper end of the base upper end 22.
a is provided. This hook 26a is a hook 261.
And a tail part 262 and a leg part 263, and the base 24 of the same type of relay connector to be connected when the cable is extended.
Are interconnected by engaging with a hook engaging portion 26b formed at the center of the lower surface of the. To disconnect the connected cable, when the tail 262 of the hook 26a is pressed, the leg 263 bends and the hook 261 is disengaged from the hook engaging portion 26b, and the hook 261 is released from the connected state.

When connecting the relay connector, the relay connector of the main line and the relay connector of the extension line are opposed to each other, and the base lower end 21 can be inserted into the other base upper end 22 by inverting the base connector. Thus, the polarities of the contacts 1 are unified. Therefore, when extending the cable, the relay connector having the same structure is used, and there is no need to pay extra attention to matching the polarity and selecting the type of the corresponding connector, so that the connection and disconnection can be easily performed. In addition, using only one type of relay connector is extremely effective in reducing the manufacturing cost and working cost of the connector.

[0013]

1 is a partially cutaway perspective view showing a schematic structure of a first embodiment of the present invention, FIGS. 2 to 8 are perspective views showing the external structure of each part, and FIGS. 9 to 11 are connectors. FIG. 12 is a perspective view showing a completed state, and FIGS. 13 to 15 are front, side, and plan views of FIG.
FIG. 16 is a perspective view of a use state, FIG. 17 is a cross-sectional view showing a contact connection state in a use state, and FIGS. 18 and 19 are plan views showing the inside of the second embodiment with the main body cover removed. It is a front view.

The first embodiment is a relay connector used for a two-core VVF cable. In this embodiment, as shown in FIG. 1, FIG. 2 and FIG. 3, the positive and negative contacts 1 have a cut portion 13 closer to the center line of the connector than the tab portion 11, and have a symmetrical shape with respect to the center line. ing. In addition,
The cut width of the cut 13 of the tact 1 is
1 is pressed against the VVF cable 3 and the pressing force
After cutting the outer and inner sheaths of the cable,
Wire 33 is pressed firmly from both sides while plastically deforming
Because the width is slightly smaller than the thickness of the conducting wire 33
It has become. The thickness of the contact 1 and the notch 1
The interval of 3 is the plastic deformation of the current-carrying wire 33 received by the pressing force.
Regarding the shape, the contact surface in the state of contact with the conducting wire 33
The product is an area larger than the cross-sectional area of the conducting wire 33, and the contact resistance is
Extremely small, the current capacity between the connected
It is set to be almost continuous. The gap between the pointed end of the receptacle 12 and the tab extension is set such that the tab 11 is slightly pushed and widened at the time of connection so that a sufficient contact pressure can be obtained by elasticity. Further, a small projection 14 is formed on the tab portion 11 in order to complete the contact between the contact of the other party and the tab portion 11. FIG. 4 shows an example of the detailed shape of the receptacle portion 12, wherein the pointed end is a structure 121 similar to a leaf spring, and has a structure to obtain an appropriate contact pressure and a sufficient contact area.

The basic structure of the main body base 2a is as described above, and as shown in FIG. 5 and FIG.
4 and are integrally formed through
A hook 26a for coupling the relay connector of the connection partner is provided at the center of the upper surface of the distal end portion, and the hook 26a and the engaging hook engaging portion 26b are provided at the center of the lower surface of the base 24, respectively. . The hook portion 26a has a hook portion 261 and a tail portion.
262 and legs 263,
Lower surface of base 24 of relay connector of the same type to be connected
The hook engaging portion 26b formed at the center is locked and
Continue. Press the tail 262 to release the connection
Then, the leg portion 263 is bent and the hook portion 261 becomes the hook engaging portion 26.
Remove from b. Base tip lower part 21 and base tip upper part 2
2 form a duct for accommodating a plurality of contacts 1 therein and receiving the distal end of the relay connector of the connection partner to connect with the plurality of contacts 1 of the partner. A passage is formed in the cable connecting portion 23 to penetrate the base 24 and lead to a duct through which the contact 1 is inserted, and a base end of the passage is formed by a guide portion 2 for positioning the contact 1.
7a.

A partition wall 29 having a cutting edge at its tip is provided between the guide portion 27a on the positive (or negative) side and the guide portion 27a on the negative (or positive) side to press the VVF cable. Then, the insulation sheath of the cable is cut to separate the positive and negative core wires, each of which is brought into contact with the cut portion 13 of the contact 1, and the energizing wire 33 of each of the positive and negative core wires and the cut portion are cut. When a contact state is established between the positive electrode 13 and the negative electrode 13, insulation between the positive and negative sides is ensured. Further, the VVF cable 3 is connected from the end of the guide portion 27a, that is, the terminal end of the partition wall 29.
The groove 25a into which is inserted communicates with the outside.

As shown in FIGS. 6 and 8, the main body cover 2b is integrally molded of a synthetic resin, presses the VVF cable inward, and connects the current-carrying wire 33 to a predetermined contact position with the cut portion 13 of the contact 1. A guide portion 27b for holding the distal end portion of the cut portion 13 is formed, and a groove 25b into which the VVF cable 3 is inserted is connected to the outside of the guide portion 27b. The hook engaging portion 28b is provided on the outer side surface.

FIGS. 9 to 11 show the procedure for mounting the relay connector.
Shown in The contact 1 is inserted into the duct through the passage of the base 24 of the main body base 2a, and the positioning guide 2
7a (FIG. 9). The VVF cable 3 is inserted along the grooves 25a and 25b up to the end face of the base 24 while the main body cover 2b is put on the connecting portion 23 of the main body base 2a (FIG. 10). (FIG. 11). The cutting edge 13 of the cut portion 13 of the contact 1 cuts the insulating outer cover 31 and the insulating inner cover 32 of the VVF cable 3, and the energizing wire 33 and the contact 1 come into contact. At the same time, the hook portion 28a is hooked on the engaging portion 28b, and the main body base 2a and the main body cover 2b are fixed.
FIG. 12 shows the appearance after the mounting is completed. FIGS. 13 to 15 show a front view, a side view, and a plan view of the appearance after the completion.
FIG. 16 shows the external appearance of the connected state, and FIG. 17 shows a cross section of the contact 1 in the connected state in FIG.

A second embodiment is shown in a plan view of FIG. 18 without a body cover and a front view of FIG. In the second embodiment, the relay connector is extended for a three-core VVF cable, and includes three contacts 1, a main body base 2a, and a main body cover 2b. Are the same in shape as the contact 1 of each of the positive and negative poles of the first embodiment, but the contact 1 of the center pole has the tab portion 11 and the cutout portion 13 arranged in a straight line, and the cutout portion 13 has the first shape. The relay connector is provided at a position shifted in the axial direction of the relay connector with respect to the notch 13 of the embodiment. In addition, partition walls 29 are provided upright at two locations so as to divide each contact in accordance with the number of contacts 1.

The mounting method is the same as that of the first embodiment, and the three contacts 1 are inserted into the ducts through the passages of the base 24 of the main body base 2a, and are mounted at the positions of the positioning guides 27a. Next, the main body cover 2b is attached to the main body base 2a.
The VVF cable 3 is inserted along the grooves 25a and 25b while being put on the connecting portion 23 of FIG. Each core wire of the three-core VVF cable 3 is divided by the partition walls 29 provided at two places, and the energizing wire 33 and the contact 1 come into contact with each other. At the same time, the hook portion 28a is hooked on the hook engaging portion 28b, so that the main body base 2a and the main body cover 2b are fixed.

The embodiments which are considered to be representative of the present invention have been described above. However, the present invention is not necessarily limited to the structures of these embodiments, but includes the above-mentioned constitutional requirements according to the present invention. The invention achieves the object of the invention and can be carried out with appropriate modifications within a range having the following effects.

[0022]

As described above, the relay connector of the present invention is constructed as described above. Therefore, even if the cable is in a live state, the current is cut off by a simple operation of pressing the contact to the VVF cable. The connector mounting operation can be performed safely and reliably without causing the connector to be mounted.
In addition, the partition wall cuts the insulating sheath to facilitate the work and acts to separate the conducting wires in one cable from each other, so that the insulation between the positive and negative conducting wires is complete and safety is ensured. Can be enhanced. Also, the contact and the conducting wire
Contact area is larger than the cross-sectional area of the conducting wire.
The resistance is extremely small and the current capacity between the connected
Since the volume is almost continuous, the heat generated at the connection
No rubble occurs.

The corner connector is one type by using the relay connector of the same structure during the cable extension, there is no need to extra considerations such as the selection of the type of polarity matches and corresponding connector, the hook and the hook engaging portion , The connection and disconnection can be performed easily and safely, so that the cost of wiring work can be reduced . Further, the number of components is small, and the main body has a simple structure by integral molding, so that it can be provided at a low cost, and in addition to requiring only one type of relay connector, the manufacturing cost of the connector is reduced. Therefore, there is obtained an effect that the safety is increased in the construction and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view illustrating the structure of a first embodiment of the present invention.

FIG. 2 is a perspective view of the same contact.

FIG. 3 is a perspective view of the same contact.

FIG. 4 is a perspective view of a receptacle portion of the contact.

FIG. 5 is a perspective view of the main body base.

FIG. 6 is a perspective view of the same body cover.

FIG. 7 is a perspective view of the same as viewed from the opposite side of the main body base.

FIG. 8 is a perspective view of the same as viewed from the opposite side of the main body cover.

FIG. 9 is an exploded perspective view at the start of a connection mounting operation.

FIG. 10 is an exploded perspective view during a connection mounting operation.

FIG. 11 is a perspective view showing a crimping step.

FIG. 12 is an external perspective view after assembly is completed.

FIG. 13 is a front view of the same.

FIG. 14 is a side view of the same.

FIG. 15 is a partially cutaway plan view of the same.

FIG. 16 is an external perspective view of a connection state.

FIG. 17 is a cross-sectional view of the same contact connection state.

FIG. 18 is a plan view of the second embodiment excluding a main body cover.

FIG. 19 is a front view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 11 Tab part 12 Resizable part 13 Notch part 14 Small projection 2 Main body 2a Main body base 2b Main body cover 21 Base tip lower part 22 Base tip upper part 23 Cable connection part 24 Base part 25a Groove 25b Groove 26a Hook part 26b Hook engaging part 27a Guide Part 27b Guide part 28a Hook part 28b Hook engagement part 29 Partition 3 VVF cable 31 Insulation outer skin 32 Insulation endothelium 33 Conducting wire A Crimping tool

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-216373 (JP, A) JP-A-51-140187 (JP, A) Jiko 50-5055 (JP, Y1) Jiko 52- 36238 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 4/24

Claims (1)

(57) [Claims] 1. A method for connecting two VVF cables (3).
Relay connector used for
And a contact that comes into contact with the contact of the connection partner
(1) and a main body (2) made of synthetic resin.
Contact (1) is a tab that contacts the contact of the connection partner
Section (11) and a receptacle section for gripping the opposing tab section (11)
(12) and the contact (1) is disconnected from the VVF cable (3).
Cut the rim outer skin (31) and the insulating inner lining (32) to remove the cable.
When it comes into contact with the conducting wire (33) to be connected, the contact area
Is larger than the cross-sectional area of the conducting wire (33).
The notch width is smaller than the diameter and
Cuts inclined with respect to the pressing direction of the VVF cable (3)
And the connection with the conducting wire (33),
The main body (2) is composed of a main body base (2a) and a VVF.
From the body cover (2b) that covers the connection point with the cable (3)
The base (2a) is
To receive the tip and store the contact (1)
Tip with gutter-shaped cross-section forming the lower half of the tip
Lower end (21) and the base tip forming the upper half of the tip
Base lower end (21) that allows lower end (21) to be inserted inside
It has a gutter-shaped cross section with a larger size
Hook (261) for connecting the relay connector of the connection partner
The tail (262) and the legs (263) that elastically support both of them
The upper end of the base (2
2), a groove (25) for inserting a VVF cable (3), and a VVF
Cut and insulate the insulation sheath (31) of the cable (3) in parallel
VVF cable having a bulkhead (29) for isolating wires (33)
Cable to hold and store the connection between (3) and contact (1)
And the hook (26a) in the center of the lower surface
Through a base (24) having a hook engaging portion (26b)
And a VVF cable is connected to the contact (1).
After connecting the energizing wire (33) of the predetermined polarity of the cable (3) by crimping,
Close the cover with the bar (2b) to set the relay connector
Of the same type when interconnecting VVF cable (3)
Use the relay connector of
Invert and face each other, with the lower end of the base (21) facing each other
Insert multiple contacts into the top end (22) of the base
(1) and multiple contacts (1) of the other party
Relay connector that was to so that.