JPH0884428A - Connection conductor for three-phase L type connector - Google Patents

Abstract

(57) [Abstract] [Purpose] A three-phase low-voltage cable is configured as one L-type connector so that it can be easily attached to the power-reception-side terminal of the connection part frame, and it is placed in the L-type connector. The connecting terminal rod members of the book are formed in the same shape to reduce the number of constituent parts. A metal receiving metal fitting member is provided around the power receiving terminal member 50 fixedly arranged on the connecting portion frame 5, and an end portion of the housing 12 of the L-type connector 10 is fixed by a tightening metal fitting 65. Connection terminal rod members 40 for connecting the conductors 2 of the three cables are arranged in the insulating cylinder 20 of the L-type connector 10, and a plug member 47 is provided on the power receiving terminal member side with respect to the connection terminal rod members. ... is fixed. The connection portion with the cable conductor of the connection terminal rod member,
The length of each protruding from the insulating cylinder is different, and the waterproof cylinder 30 protects the connecting portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an L-type connector used for supplying three-phase alternating current to a power-receiving-side device such as a 600V low-voltage motor, and more particularly, a three-phase terminal is provided on one connector. Then, the present invention relates to a connection conductor of a three-phase collective L-type connector that facilitates connection work of a power feeding unit by attaching an L-type connector to a power receiving terminal member.

[0002]

2. Description of the Related Art An apparatus for supplying power to a power-receiving-side device such as a low-voltage motor using an L-type connector, for example, as shown in Japanese Utility Model Laid-Open No. 254252/1992, is phase by phase. There is used a means for attaching the L-type connectors to the power supply terminals in the above-mentioned manner one by one. However, in the L-type connector shown in the conventional example, the L-type connector corresponding to one phase is attached to the ends of the three cables, respectively. Therefore, three power receiving terminals are provided on the power receiving side. It is necessary to provide the members at predetermined intervals. Therefore, when connecting the L-type connector to the power receiving device, it is necessary to mount the L-type connector according to the mounting order of the L-type connector of each phase.

However, in order to attach the above-mentioned three L-type connectors to each other, it is necessary to prepare an extra space for attaching a large number of L-type connectors to the device on the power receiving side. There is a problem that the burden on Therefore, in order to solve the above-mentioned problems, it is required to connect three-phase cables using one L-type connector, and three-phase power supply terminals are arranged in one L-type connector. It is considered that three power receiving terminals are provided on the power receiving terminal member side as well. As described above, in order to perform three-phase power supply using one L-type connector, as in the case of the low voltage connector,
By arranging the three-phase plug members at a predetermined distance from the tip of the L-type connector (for example, in a state where the phases are shifted by 120 °), and arranging the finger conductors corresponding to the plug members on the power receiving side, the solution is achieved. It is possible.

However, in the connecting terminal rod member arranged between the plug member arranged in the L-type connector and the cable conductor, the position of the plug member should be different in the length direction of the L-type connector. Is needed because 2
It is necessary to prepare three types of connecting terminal rod members having different lengths. However, prepare connecting terminal rod members of different lengths, attach the connecting terminal rod members to the insulating tube in accordance with the phase of each cable, and perform the connection work to the cable conductor and plug member. In addition to increasing the number of components of the L-type connector, it also causes workers who perform connection work to pay extra attention.
There is a problem in improving work efficiency. Furthermore, since preparing a plurality of types of connecting terminal rod members has many problems in managing parts, it is possible to simplify the configuration of the L-type connector and improve work efficiency. Is requested.

[0005]

An object of the present invention is to replace the conventional L-type connector for each phase for supplying power to the power receiving device side, and to collect three-phase cables into one L-type connector.
An object of the present invention is to provide a device that can be easily connected to a power receiving terminal member on the power receiving side, and a connection terminal rod member for connecting a three-phase cable conductor in an insulating cylinder of an L-type connector, Configured as commonly usable, L
In addition to reducing the types of components of the mold connector,
It is an object of the present invention to provide a connector that can easily assemble an L-type connector.

[0006]

DISCLOSURE OF THE INVENTION According to the present invention, a three-phase low-voltage cable is collectively connected to an L-type connector, and a three-phase power receiving terminal is arranged with respect to a power-receiving-side power receiving terminal member. The present invention relates to an apparatus configured to be capable of supplying power to a power receiving device such as a motor by mounting the power receiving terminal member on the power receiving terminal member. In the present invention, the finger conductors provided in the power receiving terminal member on the power receiving side are arranged so as to project to the same length, and the plug member arranged in the insulating cylinder of the L-shaped connector is arranged so as to correspond to the finger conductors. The connecting terminal rod member to be arranged in the insulating cylinder of the connector is configured as a commonly usable member having the same length and shape, and the cable conductor is connected to the connecting terminal rod member at different positions. are doing.

[0007]

In the power receiving terminal member arranged in the power receiving device of the present invention, since the finger conductors capable of receiving power of three phases are collectively provided in one power receiving portion, the structure of the power receiving terminal member can be simplified and the power receiving terminal member can be simplified. Wiring between the motor and the motor can be easily performed. In addition, the three cables are inserted into the L-type connector all at once, and the cable conductors are connected through the connecting terminal rod members corresponding to the respective plug members, so that the L-type connector can be made compact. become. The plug members arranged in the insulating cylinder have different lengths, but the connection terminal rod members for electrically connecting the cable conductor and the plug member can be configured as members having the same shape. Is configured as follows. Therefore, in the L-type connector of the present invention, it is not necessary to prepare a plurality of types of connecting terminal rod members, and the connecting terminal rod members having the same shape are commonly used, so that the L-type connector can be easily assembled. It is possible to simplify the configuration of the L-type connector.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connecting conductor of a three-phase collective L-type connector of the present invention will be described with reference to the illustrated example. In the example shown in FIG. 1, a power receiving terminal member 50 is arranged in a connecting portion frame 5 that houses a power receiving device body such as a motor, and the power receiving terminal member 50 is provided in the connecting portion frame 5 together with a receiving metal member 60. It is fixed by fixing bolts 70 and 70a. Further, three finger conductors 57, 57a ... Are arranged on the power receiving terminal member 50, and the L-shaped connector 1
0 has three cables 1, 1a ... Conductors 2, 2a ...
Connection terminal rod members 40, 40a ... And plug members 47, 4 attached to the tip of the connection terminal rod member.
.. are provided corresponding to the finger conductors. Further, a handle 11 is provided on the housing 12 so that the L-type connector can be attached and detached by holding the handle by hand, so that the handleability of the L-type connector can be improved.

The L-type connector 10 has an L-shaped housing 12 in which an insulating cylinder 20 for fixing and holding the connection terminal rod members 40 and the plug members 47 is housed. The cable protection metal fitting 14 is attached to the end portion of the cable side via the connecting portion 13. Then, a mounting member 15 is arranged at an end of the protective metal member 14, and a base portion of the cable is tightened and fixed by the mounting member 15, and an end portion of the insulating tube 20 and a connecting portion of the cables 1, 1a. To protect. Further, in order to maintain the insulation state around the portion where the cable conductor is connected to the connection terminal rod members 40, 40a ... And to protect the connection portion,
The waterproof cylinders 30, 30a ... Are arranged, and these waterproof cylinders are configured as cylindrical members using an insulating material, as described later. In addition to the above-described configuration, a tightening fitting 65 is provided at the end of the housing 12 on the power receiving terminal member side.
A screw part that engages with the power receiving terminal member on the power receiving side and the connecting end of the insulating tube 20 is locked to the power receiving terminal member.

Next, each component arranged in the L-type connector 10 of the present invention will be described. The connection terminal rod member 40 arranged between the cable conductor 2 and the plug member 47 is as follows.
2 and 3, a copper alloy rod-shaped member is provided on a main body 41 having upper and lower parallel planes, and a screw hole 4 for mounting a plug member at one end of the main body.
5 is provided. Further, a crimping terminal portion 43 is provided at the other end of the main body 41 via a step portion 42, and the crimping terminal portion 4 is provided.
An insertion hole 44 into which the cable conductor is inserted is provided in the inside of the cable 3. Then, the cable conductor is inserted into the insertion hole of the connection terminal rod member 40, and the connection terminal rod member 40 and the cable conductor can be integrally attached by pressing and tightening from the outside.

The connecting terminal rod member 4 shown in FIGS.
With respect to 0, after inserting the cable conductor into the insulating cylinder in a fixed state, the waterproof cylinder 30 is attached to protect the outer peripheral portion of the connecting portion and maintain the waterproofness of the connecting portion. The waterproof cylinder 30 is configured as shown in FIG. 4, and is made of a material having an insulating property such as rubber to form a substantially cylindrical member. The waterproof cylinder 30 has a through hole 31 at the center in the lengthwise direction, and the diameter of the through hole 31 on the small diameter side is matched with the outer diameter of the cable. The crimp terminal portion of the member can be housed. Further, a portion having a large inner diameter corresponding to the protruding member provided by protruding from the body of the insulating cylinder is provided on the end portion side of the large diameter portion, and a step portion of the protruding member protruding from the body of the insulating cylinder described later is provided. A corresponding flange 33 is provided.

The insulating cylinder 20 shown in FIGS. 5 to 7 is housed inside the housing of the L-type connector.
The terminal insertion holes 23, 23a, 23b into which the internal connection terminal rod members of the main body are inserted are arranged in parallel, and are integrally formed of rubber or the like, and the plug insertion holes 27, 27a are formed at right angles to the terminal insertion holes. 27b are provided respectively. As shown in FIG. 6, three projecting members 22, 22a, 22b are arranged at the cable-side end portion 21 of the body of the insulating cylinder 20,
Among these projecting members, the projecting member 22 is configured to have a short projecting length, and the other two projecting members 22a and 22b are arranged so as to largely project to the side. Further, in the central portion of each of the projecting members 22 ...
3b are respectively arranged, and the connection terminal rod members are inserted and fixedly held.

An end portion 25 of the insulating cylinder 20 on the power receiving terminal member side.
As shown in FIG. 7, it is configured as a cylindrical member provided with a reception cap insertion hole 26, and plug insertion holes 27, 27a, 27b are provided on the inner side of the reception cap insertion hole 26 at predetermined angles. And place the plug member. In the insulating cylinder 20 configured as described above, as shown in FIG.
, The plug insertion holes 27 are arranged at right angles to the terminal insertion holes 23, and the connection terminal rod member is inserted into the terminal insertion holes for positioning, Both members can be fixed by inserting the plug member from the plug insertion hole and engaging the screw portion of the plug member with the screw hole of the connection terminal rod member. And
The tip end portion of the plug member is made to project into the inside of the receptacle insertion hole 26 by a predetermined length so that it can correspond to the finger conductor of the power receiving terminal member.

In the connection part frame of the power receiving side device of the present invention, a power receiving terminal member 50 as shown in FIGS.
The receiving metal member 60 as shown in 0 and 11 is arranged. The power receiving terminal member 50 shown in FIGS. 8 and 9 has three finger conductors 57, 57a, 57b inside a tubular member 51 made of a material having insulating properties and strength such as epoxy resin. Is provided in a state of being embedded. The finger conductors 57 ... Are constructed similarly to those provided in the conventional single-core type power receiving terminal member, and the conductors 55 are arranged in the length direction of the power receiving terminal member.
Connected to the end of. Further, a portion exposed from the base of the conductors 55 to the inside of the connecting portion frame is provided, and screw holes 56 are arranged in the exposed portion of the conductor to supply power to a power receiving device such as a motor. Try to connect the wires. A rectangular flange 52 is provided so as to project from the base of the tubular member 51.
Screw holes 53 are respectively arranged at the corners of the so as to constitute means for fixing and holding the connection portion frame.

The bracket member 60 shown in FIGS.
Is fixedly held by the connecting portion frame together with the power receiving terminal member, and a rectangular flange 61 is integrally provided at the base of the ring portion 63, and the tubular member of the power receiving terminal member is provided inside the ring portion 63. Positioning should be done in the inserted state. Further, the receiving metal member 60 is made of metal such as stainless steel, and screw holes 62 ... Are arranged at the corners of the flange 61, and the screw holes 62. It is configured so as to match the screw hole provided in 52. Further, an outer screw portion 64 is formed around the ring portion 63 of the receiving metal member, and a fastening metal fitting is engaged with the outer screw portion 64 in a state where the L-shaped connector is attached, so that an L-shaped connector is formed. The receiving metal member is fixed and held. In addition, on the inner surface of the ring portion 63 of the receiving metal member 60,
The three recessed groove portions 69, 69a, 69b are respectively arranged, and the L-shaped connector receiving metal fitting is engaged with the recessed groove portions by engaging a protrusion (not shown) provided on the housing of the L-shaped connector. By positioning with respect to the member, the plug member and the finger conductor can be connected to each other when the L-type connector is engaged with the power receiving terminal member.

By providing the constituent members as described above, in the power feeding device shown in FIG. 1, by mounting the L-type connector 10 on the power receiving terminal member 50 which is fixedly held by the connecting portion frame 5, Three-phase power supply can be performed using one L-type connector 10. Further, in the L-type connector 10 of the present invention, the conductors 2 of the three cables 1 are fixed to the connection terminal rod members 40 corresponding to the respective cables, and the connection terminal rod members are insulated. 20
, And the plug members 47 are attached to the respective connection terminal rod members, thereby connecting the connection terminal rod member and the plug member through the insulating cylinder 20. It can be performed. By covering the connecting portion between the cable conductor and the connecting terminal rod member with the waterproof cylinder 30 ..., It is possible to maintain the insulating state of the connecting portion and prevent moisture from entering the connecting portion. .

Furthermore, by attaching a half-divided housing 12 to the outer peripheral portion of the insulating cylinder and fixing it with screws or the like, the L-type connector can be satisfactorily handled and mechanical strength can be imparted. I am trying. The L
In the mold connector 10, the cable protection metal fitting 14 is arranged on the end portion of the housing on the cable side.
Since an integral tubular member is formed between the cable protection metal fitting 14 and the cable protection metal fitting 14, the mechanical strength of the L-type connector can be favorably maintained. Therefore, the connection portion between the connection terminal rod member and the cable conductor arranged at the cable-side end of the insulating cylinder is also protected by the cable protection metal fitting, so that the L-type connector is attached to and detached from the connection portion frame. The work can be performed in the same way as for a conventional single-core L-type connector.

Further, when the L-shaped connector is attached to the power receiving terminal member arranged in the connecting portion frame, the L-shaped connector is engaged with the recessed groove portion provided in the receiving metal member so as to engage the L-shaped connector. The connector can be attached and the plug member can be automatically positioned with respect to the finger conductor. Further, the power receiving terminal member 50 and the receiving metal member 60 arranged on the connecting portion frame side are fixed to the connecting portion frame with the fixing bolts 70 in a state where the flanges of both members are overlapped. ,
For the power receiving terminal member made of epoxy resin, the outer peripheral surface is protected by the receiving metal fitting member made of stainless steel, and the end portion of the housing of the L type connector is fixedly held to the receiving metal fitting member to mount the L type connector. The condition can be maintained accurately.

[0019]

The connection conductor of the three-phase collective L-type connector of the present invention is configured as described above, and the power receiving terminal member arranged in the power receiving device of the present invention has fingers capable of receiving three phases of power. Since the conductors are collectively provided in one power receiving unit, the structure of the power receiving terminal member can be simplified and the wiring between the power receiving terminal member and the motor can be easily performed. In addition, the three cables are inserted into the L-type connector all at once, and the cable conductors are connected through the connecting terminal rod members corresponding to the respective plug members, so that the L-type connector can be made compact. become. The plug members arranged in the insulating cylinder have different lengths, but the connection terminal rod members for electrically connecting the cable conductor and the plug member can be configured as members having the same shape. Is configured as follows. Therefore, L of the present invention
In the type connector, it is not necessary to prepare a plurality of types of connecting terminal rod members, and by using the connecting terminal rod members having the same shape in common, the L type connector can be easily assembled. The configuration of the mold connector can be simplified.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which an L-type connector of the present invention is attached to a power receiving terminal member of a connecting frame.

FIG. 2 is a side view of the connection terminal rod member of the present invention.

FIG. 3 is a plan view of a connection terminal rod member.

FIG. 4 is an explanatory diagram showing a configuration of a waterproof tube.

FIG. 5 is a side view of the insulating cylinder of the present invention.

FIG. 6 is a front view of the insulating cylinder on the cable side.

FIG. 7 is a bottom view of the insulating cylinder.

FIG. 8 is a side view of a power receiving terminal member used in the present invention.

FIG. 9 is a front view of an L-type connector side of a power receiving terminal member.

FIG. 10 is a side view of a receiving member member.

FIG. 11 is a front view of an L-shaped connector side of a receiving metal member.

[Explanation of symbols]

1 cable, 2 conductors, 5 connecting frame, 10 L-type connector, 12 housing, 1
4 cable protection brackets, 15 mounting brackets,
20 Insulation cylinder, 22 Projection member, 23 Terminal insertion hole, 26 Resep insertion hole, 27 Plug insertion hole, 30 Waterproof cylinder, 33 Flange, 40
Connection terminal rod member, 43 crimping terminal portion, 45 screw hole, 47 plug member, 50 power receiving terminal member,
51 tubular member, 55 conductor, 57 finger conductor, 60 receiving member member, 61 flange, 63 ring portion, 65 tightening member, 6
9 Groove part.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Masataka Okada 11-22, Gohonmatsucho, Atsuta-ku, Nagoya-shi, Aichi Chubu Plant Service Co., Ltd. (72) Inventor Mikio Makino 1008 Shinbori, Kumagaya-shi, Saitama Mitsubishi Cable Industries Kumagaya Manufacturing Co., Ltd. (72) Inventor Seiichiro Hayashi 1008 Shinbori, Kumagaya City, Saitama Mitsubishi Cable Industries, Ltd. Kumagaya Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A three-phase low-voltage cable is collectively connected to an L-type connector, a three-phase power receiving terminal is arranged with respect to a power-receiving-side power receiving terminal member, and the L-type connector is attached to the power-receiving terminal member. In a device configured to be capable of supplying power to a power receiving device such as a motor, the finger conductors provided on the power receiving terminal member on the power receiving side are arranged so as to project to the same length, and are arranged in the insulating cylinder of the L-type connector. The plug member is arranged corresponding to the finger conductor, and the connection terminal rod member arranged in the insulating cylinder of the L-type connector is configured as a commonly usable member with the same length and shape,
A connection conductor of a three-phase collective L-type connector, characterized in that cable conductors are arranged at different positions with respect to the connection terminal rod member.