JPH0559645B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a high-voltage flat cable connection section, and in particular, to a high-voltage flat cable connection section that is miniaturized and that facilitates cable connection operations. Regarding a flat cable connection part.

[Conventional technology]

An example of a conventional high-voltage cable connection section is shown in FIG. 7. This is high voltage cable 1
The cable shielding layer 2, the cable insulator 3, and the cable conductor 4 are stripped in stages, and the cable conductor 4 is connected by a compressed conductor connection pipe 5, and a spacer 6 is provided on the cable insulator 3. Furthermore, an insulating cylinder 7 is provided on the outer periphery of the connecting portion. In order to protect this connection, a connection protection layer 8 is provided over the sheaths 1a of both high-voltage cables 1.

FIG. 8 shows another high-voltage cable connection, with an insulating unit 1 of epoxy or the like having a protective case 11.
2 has conical openings 12a formed at both ends, and an embedded conductor 10 is provided between both openings 12a. On the other hand, the high-voltage cable 1 from which the cable shielding layer 2, the cable insulator 3, and the cable conductor 4 have been stripped off has a wedge-shaped conductor connector 9 fixed to the end of the cable conductor 4, and an opening on the cable insulator 3. A rubber molded stress cone 13 is provided which is molded to follow the shape of the portion 12a. A stress cone compression fitting 14 is provided at the rear end of the rubber molded stress cone 13, and when the protective fitting 16 on the high voltage cable 1 is fixed to the protective case 11, it is compressed by a compression spring 15 provided inside. The stress cone compression fitting 14 is biased in the insertion direction to generate a predetermined surface pressure state at the interface of the stress cone 13 and the like. Further, another high voltage cable 1' is similarly inserted from the opposite direction of the insulating unit 12, thereby connecting the high voltage cables 1, 1'. In addition, 17 is a waterproof tape winding part.

Figures 9a and 9b show connections for emergency cables (temporary cables) for early restoration of power outages caused by high-voltage line accidents, etc.
The emergency cable 26 is connected to the emergency cable 26 by a cylindrical rubber molded terminal 19 attached to the terminal part 18 of 6 and a connecting device 25 having conical projections 23 at both ends
connection is made. That is, rubber mold terminal 1
Connecting device 25 connects the male contact 20 provided in
Connecting device 2
By screwing into the male threaded portion of the insertion fitting 24 of No. 5, the rubber mold terminal 19 and the connecting device 25 are fixed. Both projections 23 of the connecting device 25 are electrically connected, and by similarly attaching another emergency cable 26 from the opposite side of the connecting device 25, the emergency cables 26 can be connected to each other.

However, since the cable is circular, all of the cable connection parts described above are cylindrical, and cannot be applied to high-voltage flat cables as is. In order to apply it to high-voltage flat cables, the cross-sectional shape of the connection part can be made oval or elliptical, but there is a problem that pressure is not applied to the joint surface of straight parts or parts with small curvature, resulting in poor insulation properties. . Therefore, as shown in FIGS. 10a and 10b, a circular rubber molded part 28 is attached to the end of the high voltage flat cable 27.
It is conceivable to provide a cap nut-shaped tightening ring 29 at the tip thereof. In this case, the tightening ring 29 is attached to the male threaded part (not shown) of the connecting device (not shown).
The high-voltage flat cable can be connected via the connecting device by screwing the flat cable into the connecting device and inserting the flat cable from the other side of the connecting device in the same way.

[Problem to be solved by the invention]

However, according to this flat cable connection part, the outer diameter of the connection part is determined based on the width of the flat cable, so the outer diameter is 4 to 5 times the thickness of the flat cable, making the connection part very difficult to connect. It has the disadvantage of being large. For example, in the case of a high-voltage flat cable with a cross-sectional shape of 20 mm x 60 mm, the outer diameter of the connection portion is 80 mm, making it extremely large. Furthermore, since the connecting portion is attached and detached by screwing into the threaded portion, etc., there is an inconvenience that the attaching and detaching operation is troublesome.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a high-voltage flat cable connection which allows the connection to be miniaturized.

Another object of the present invention is to provide a high-voltage flat cable connection part that allows connection of flat cables by easy attachment/detachment operations.

[Means to solve the problem]

In order to achieve the above-mentioned objects, the present invention has a flat embedded conductor insulated by a molded insulator, which has an oval or elliptical cross-sectional shape and a tapered part whose cross-sectional area becomes smaller toward the tip. A plug terminal portion consisting of a plurality of pin terminals for dividing a current-carrying current fixed to the embedded conductor by parallel arrangement; a flange provided on the outer periphery of the plug terminal portion; and a flange into which the plug terminal portion can be inserted. It has a tapered opening corresponding to the tapered part having an oval or elliptical cross-sectional shape, and a plurality of female contacts are provided deep inside the opening to engage with the plurality of pin terminals. a connecting tube having one end rotatably fixed to the connecting tube so that it opens and closes on the outside of the flange of the plug end portion, and surrounds the plug end portion on the outside when the plug end portion is in a closed state. a holder divided into at least two parts such that one end engages with the flange on the opposite side of the connecting cylinder, the other end is pivotally fixed to the other end of the holder, and is housed in the holder; When the holder is closed, the elastic member is compressed between the flange and a pivot point of the holder, and the plug end portion is biased in the insertion direction via the flange. and a plug terminal fixing means for fixing the plug terminal by applying surface pressure to a contact surface between the tapered part and the tapered opening. It provides:

That is, the high voltage flat cable connection section of the present invention includes the following means.

(1) Plug terminal part The tip of a flat conductor embedded in the molded insulator, which has a molded insulator with an oval or elliptical cross-sectional shape and a tapered section where the cross-sectional area becomes smaller toward the tip. A plurality of pin terminals are arranged in parallel in the section. In this method, the buried conductor is connected to the conductor of the high voltage flat cable, and the buried conductor is provided with a plurality of pin terminals, thereby dividing the electrical current.

(2) Flange This is a flange that is provided at a predetermined position from the tip of the plug terminal described above and has a cross section that is at least larger than that cross section, and is capable of absorbing elastic force in the insertion direction of the plug terminal from the plug terminal fixing means described later. receive.

(3) Connection tube This is the tube into which the aforementioned plug terminal is inserted.
The end portion thereof is provided with a tapered opening into which a plug end portion can be inserted. That is, an opening having an inner surface shape corresponding to the tapered shape of the molded insulator described above is formed. The opening communicates with a plurality of female contacts (tulip contacts) that can be engaged with the plurality of pin terminals provided at the tip of the plug terminal, and electrically connects the pin terminals of the plug terminal. I can do it.

(4) Plug fixing means This means fixes the plug terminal inserted into the aforementioned connection tube, and urges the inserted plug terminal in the plug terminal insertion direction by an elastic member. This allows the plug end portion to be fixed within the connecting tube.

The flange may be provided with a plurality of engagement recesses at predetermined positions on the opposite side of the connecting tube, and the elastic member may have one end thereof engaged with the engagement recess. Further, the holder may be configured to maintain its closed state by using a locking member.

[Effect]

Multiple pin terminals are arranged in parallel at the tip, and a plug terminal part is formed in the connection tube with a tapered molded insulator with an oval or elliptical cross-sectional shape and a tapered molded insulator whose cross-sectional area becomes smaller toward the tip. Insert it through the opening provided. This connects the plurality of pin terminals to the plurality of female contacts. A plug fixing means provided on the connection tube biases the inserted plug end portion in the insertion direction to apply a predetermined surface pressure state to the interface of the insulator. Therefore, the connecting portion can be made smaller, and the operation of attaching and detaching the cable connection can be facilitated.

〔Example〕

Hereinafter, the high voltage flat cable connection portion of the present invention will be explained in detail.

Figures 1a, b, c and d show a plug terminal 63 of the present invention. An embedded conductor 35 having an oval cross section is connected to the conductor terminal (not shown) of the high-voltage flat cable 30 by a method such as compression, and two pin terminals 36 arranged in parallel are screwed into the tip of the embedded conductor 35. It is. An insulating mold part 34 and a protective mold part 31 are integrally molded with the flange 32 using insulating rubber or the like on the outer periphery of these parts, and the insulating mold part 34 has an oval cross-sectional shape and a small cross-sectional area over the embedded conductor 35. It is formed into a tapered shape so that the plug end portion 6
The thickness and width of the cable 3 are approximately 1.5 times that of the flat cable 30, thereby reducing the size. Further, the embedded flange 32 has a rectangular cross section that is at least larger than the cross section between the protective mold part 31 and the insulating mold part 34, and on one side of the embedded flange 32, four spherical recesses 33 are formed vertically and horizontally. It can be engaged with a compression spring which will be described later.

FIGS. 2a and 2b show a connecting tube 50 of the present invention, in which a spacer 49 is interposed between protective covers 51a and 51b, and terminal fixing fittings (holders) 48a, 48b, 48c, 48d
is rotatably attached. On one side of the connecting tube 50, the terminal fixing metal fitting 48a and the terminal fixing metal fitting 48b are attached.
However, on the opposite side, the terminal fixing fitting 48c and the terminal fixing fitting 48d are designed to open and close in correspondence with each other. Due to this integration, the terminal fixing bracket 4
The holes 64a and 64b provided in the terminal fixing fittings 48c and 48b are combined into one hole, and the ring 52a is attached to the fixing member 65. A pin 54 is attached to the middle of the ball chain 53 via a ring 52b.
By appropriately inserting the terminal fixing fittings 48a, 48b or 48c, 48d, it is possible to lock the closed terminal fixing fittings 48a, 48b or 48c, 48d from opening. Further, the stopper 55 attached to the tip of the ball chain 53 by a ring 52c has an end fixing fitting 48a,
Terminal openings 66A, 66B formed when 48b or terminal fixing fittings 48c, 48d are matched.
The terminal fixing metal fittings 48a, 48b or 48c, 48d are designed to fit around the outer periphery of
The lock can be strengthened. A receiving fitting 37 for a compression spring 39 is rotatably attached to a predetermined position of the terminal fixing fittings 48a, 48b, 48c, and 48d. Compressed. Shaft 40 integrated with tip 40a
supports a compression spring 39, and the compression force can be adjusted by adjusting the nut. Inside this connecting tube 50,
A rubber mold insulating cylinder 41 having openings 41a and 41b having an oval cross-sectional shape as shown in FIG. 2c is provided, and the outer semiconductive layer rubber mold 4
2. It consists of an insulating rubber mold 43 and an internal semiconducting layer rubber mold 44. The rubber mold insulating cylinder 41 has tapered parts 34a and 34b so that the cross-sectional area of the oval openings 41a and 41b becomes small.
is formed. These tapered parts 34a, 34
b is adapted to engage with the tapered portion of the insulating mold portion 34 described in FIG. A contact 46 that elastically fits with the pin terminal 36 provided on the plug terminal portion 63 is provided inside the rubber molded insulating tube 41.
By appropriately inserting the pin terminals 36 from both directions, the pin terminals 36 can be electrically connected to each other. Further, an embedded conductor 45 is provided inside the internal semiconductive layer rubber mold 44, and when the plug terminal portion 63 is inserted, it contacts and conducts with the embedded conductor 35 of the plug terminal portion 63. Thereby, it becomes possible to share the current supply with other parts than the contactor 46, and the electrical connection can be made more reliable. This connecting tube 50
In this method, a plurality of pin terminals 36 are arranged in parallel at the tip of the plug terminal part 63 described above to divide the electrical current during connection, and the connection is made by a predetermined surface pressure state of the elastically compressed mold insulator interface. Achieved miniaturization (flattening) of the parts.

Next, the attachment/detachment operation of the present invention will be explained using FIG. 3 and FIGS. 4a, b, and c.

First, in advance, the terminal fixing fitting 48a of the connecting tube 50,
48b, 48c, and 48d are left open, and plug terminal portions 63 formed at the terminals of a high-voltage flat cable (not shown) are inserted from both ends of the connecting tube 50. At this time, the tapered part of the insulating mold part 34 is connected to the tapered part 34 of the openings 41a and 41b.
a, 34b, and the pin terminals 36 arranged in parallel at the tip of the plug terminal portion 63 elastically engage with the contactor 46. As a result, the plug end portion 63 inserted through the opening 41a and the plug end portion 63 inserted through the opening 41b are electrically connected. Thereafter, in order to firmly fix the connection of the plug terminal portion 63, the previously opened terminal fixing fittings 48a, 48b, 48c, and 48d are respectively closed. That is, the terminal fixture 48a and the terminal fixture 48b are closed so that the terminal fixture 48c and the terminal fixture 48d correspond to each other. At this time, the tip portion 40a of the compression spring 39 rotatably attached to the terminal fixing fittings 48a48b, 48c, and 48d via the receiving fitting 37 is engaged with the spherical recess 33 provided in the flange 32 of the plug terminal portion 63. .
These terminal fixing fittings 48a, 48b, 48c, 48
When the shaft 40 is aligned along the cable axis by closing d, the compression spring 39 is compressed by the tip 40a engaged in the spherical recess 33 and the receiving fitting 37. As a result, the plug end portion 63 is urged in the insertion direction and is firmly fixed within the connecting tube 50. Compression based on this lever principle has a compression force of less than 1/10 (100Kg) compared to compression caused by direct tightening.
(6 kg is required to obtain the force of 100 kg), making the work easier. However, the terminal fixing fittings 48a, 48b,
48c and 48d tend to open due to the elastic repulsion force of the compression spring 39 when the external force is removed. , 48b and terminal fixing bracket 4
8c, 48d holes 64a, 64b and holes 64c, 6
4d, and furthermore, a ring 52c is inserted at the tip of the ball chain 53 on the outer periphery of the terminal openings 66A, 66B.
Fit the stopper 55 attached via the. With this, each terminal fixing metal fitting 48a, 4
8b, 48c, and 48d are locked in the closed state. In this way, the terminal fixing fittings 48a, 48
By closing b, 48c, and 48d, the plug end portion is connected and fixed to the connection tube 50 with one touch, so that the high-voltage flat cables 30 can be easily connected to each other. When removing the plug end portion 63 from the connecting tube 50, the pin 54 is pulled out from the holes 64a, 64b and the holes 64c, 64d, and the stopper 55 fitted to the outer periphery of the end openings 66A, 66B is removed. Terminal fixing metal fittings 48a, 48b, 48c, 48d due to elastic force
opens. In this state, when the plug terminal part 63 is pulled out from the openings 41a and 41b, the flat cable 30
Comrades are disconnected.

In addition, the terminal fixing fittings 48a, 48b, 48c, 4
The locking means 8d is not limited to the above-mentioned pin or stopper, but may have a structure in which a hook is hooked onto the hook, for example.

FIGS. 5a and 5b show a modification of the present invention, in which an L-shaped connecting tube 57 is formed with openings 67 having tapered portions 34a at both ends of the rubber molded insulating tube 41. Two contacts 46 are provided at each end. An L-shaped embedded conductor 45 is connected to these two contacts 46, and when the pin terminals of the plug end portion are inserted into both contacts 46 as appropriate, both pin terminals are electrically connected. be able to. As a result, a flat cable that cannot be bent in the width direction can be easily formed into an L-shape by simply connecting it from both ends. In addition, since the other configurations are the same as those in Figure 2 a and b,
The explanation will be omitted.

FIGS. 6a and 6b show another modification of the present invention, in which a modified connecting tube 61 connects a circular cable and a flat cable, and a conductor (not shown) of the circular cable (not shown) is attached to one end. A circular contact 60 is provided into which a cable is inserted, and a tapered portion 34 is provided at the other end so that a flat cable (not shown) can be inserted.
The opening 67 having the shape a is the rubber mold insulation cylinder 41
It is formed by. A contact 46 that engages with a pin terminal provided at the plug terminal of the flat cable is provided at the back of the opening 67, and the contact 46 is connected to the circular contact 60 via the conversion conductor 59. There is. Therefore, when the conductor of the circular cable is inserted into the circular contact 60 and the pin terminal of the plug terminal connected to the flat cable is elastically engaged with the contact 46, the circular cable and the flat cable are electrically connected. . In addition, 58 is an embedded metal fitting having a male threaded part that screws into a cap nut-shaped tightening ring provided on the circular cable. By screwing into the tightening ring, the circular cable can be firmly connected. It is something to do. Further, reference numeral 62 is a leg for fixing this irregularly shaped connecting tube 61.

〔Effect of the invention〕

As explained above, according to the high-voltage flat cable connection part of the present invention, a flat conductor is embedded in a molded insulator that has an oval or elliptical cross-sectional shape and is tapered so that the cross-sectional area becomes smaller toward the tip. A plug terminal is formed by arranging a plurality of pin terminals in parallel on this flat conductor, and the plug terminal is inserted through an opening having an inner surface shape corresponding to the tapered shape of the molded insulator to form a plurality of female contacts. elastically fitting the plurality of pin terminals;
Since the inserted plug terminal part is elastically biased in the insertion direction by the plug fixing means provided on the connection tube, the flat cable connection part can be made smaller and the flat cable connection can be made easier. This can be done by easy attachment and detachment operations.

In addition, since the flange is provided with an engagement recess and one end of the elastic member is engaged with the recess, one end of the elastic member can be securely fixed, and the elastic force can be transmitted to the plug terminal without waste. I can do it.

Furthermore, since the locking member is used, the plug end portion can be firmly fixed to the connecting tube with one touch.

[Brief explanation of drawings]

Figures 1 a, b, c, and d show plug terminals of the present invention; a is a plan view thereof, b is a front view, c is a left side view, d is a right side view, Figures 2 a, b, c shows a connecting tube, a is a plan view thereof, b is a front view, c is a cross-sectional view of the opening of the connecting tube, FIG. 3 is an explanatory diagram showing a state in which the plug terminal is fixed to the connecting tube, FIG. 4 a, b,
5c is an explanatory diagram showing a state in which the plug terminal part is fixed; FIGS. 5a and 5b are explanatory diagrams showing a modification of the present invention; FIGS. 6a and b are explanatory diagrams showing another modification of the invention. , FIG. 7 is an explanatory diagram showing a conventional high voltage cable connection part, FIG. 8 is an explanatory diagram showing another conventional high voltage cable connection part, FIGS. 9 a and b are explanatory diagrams showing an emergency cable connection part, FIGS. 10a, 10b, and 10c are explanatory diagrams showing conventional high-voltage flat cable connections. Explanation of symbols, 1... High voltage cable, 1a... Sheath, 2... Cable shielding layer, 3... Cable insulator, 4... Cable conductor, 5... Compression type conductor connecting tube, 6... Spacer, 7 ...Insulating tube, 8...Connection protection layer, 9...Wedge-shaped conductor connector, 10...
...Embedded conductor, 11...Protective case, 12...Insulation unit, 12a...Opening, 13...Rubber molded stress cone, 14...Stress cone compression fitting, 15...Compression spring, 16...Protection fitting ,
17...Waterproof tape winding portion, 18...Cable end portion, 19...Rubber mold terminal, 20...Male contact, 21...Tightening ring, 22...Female contact, 23...Conical protrusion , 24...embedded metal fittings,
25... Connection device, 26... Emergency cable, 2
7, 30... High voltage flat cable, 28... Rubber molded part, 29... Tightening ring, 31... Protective molded part, 32... Embedded flange, 33...
Spherical recess, 34...Insulating mold part, 35...Embedded conductor, 36...Pin terminal, 37...Bracket fitting, 3
9...Compression spring, 40...Shaft, 40a...
Tip portion, 41...Rubber mold insulating tube, 41a,
41b...Opening, 42...Outer semiconducting layer rubber mold, 42...Insulating rubber mold, 44...Inner semiconducting layer rubber mold, 45...Embedded conductor, 4
6...Contact, 47...Hexagon socket head bolt, 48
a, 48b, 48c, 48d...terminal fixing metal fittings,
49... Spacer, 50... Connection tube, 51a, 5
1b...protective cover, 52a, 52b, 52c...
...Ring, 53...Ball chain, 54...Pin, 55...Stopper, 57...L-shaped connecting tube,
58...Embedded metal fitting, 59...Conversion conductor, 60...
Round contact, 61...unshaped connection tube, 62...leg,
63...Plug terminal section, 64a, 64b, 64
c, 64d...hole, 65...fixing member, 66A,
66B...terminal port, 67...opening.

Claims (1)

[Scope of Claims] 1. A flat buried conductor insulated by a molded insulator having an oval or elliptical cross-sectional shape and a tapered portion whose cross-sectional area decreases toward the tip, and a flat buried conductor insulated by a molded insulator, and this buried conductor A plug terminal portion consisting of a plurality of pin terminals that divide a fixed energizing current by parallel arrangement; a flange provided on the outer periphery of the plug terminal portion; and a cross-sectional shape such that the plug terminal portion can be inserted. a connecting tube having a tapered opening corresponding to the oval or elliptical tapered portion, and a plurality of female contacts provided in the depths of the opening to engage with the plurality of pin terminals; , one end of which is rotatably fixed to the connecting tube so that it opens and closes on the outside of the flange of the plug end portion, and when the plug end portion is in a closed state, at least two a holder that is divided into two parts, one end of which engages with the flange on the opposite side of the connecting tube, the other end of which is pivotally fixed to the other end of the holder, and an elastic member that is accommodated in the holder; When the holder is closed, the elastic member is compressed between the flange and a pivot point of the holder, and the plug end portion is biased in the insertion direction via the flange, and the tapered portion and plug end fixing means for fixing the plug end by applying surface pressure to the contact surface of the tapered opening. 2. The flange is provided with a plurality of engagement recesses at predetermined positions on the opposite side of the connecting cylinder, and the elastic member has one end thereof engaged with the engagement recess. high voltage flat cable connection. 3. The high voltage flat cable according to claim 1, wherein said holder is maintained in its closed state by a locking member.