JP3056955B2 - Three-phase batch type connector for low-voltage motor power supply - Google Patents

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 to supply three-phase alternating current to a power receiving device such as a low-voltage motor, and more particularly, to a three-phase terminal provided in one connector. Positioning of a three-phase collective L-shaped connector, wherein the L-shaped connector is configured to be attachable to the power receiving terminal member, and a means for defining a mounting position of the L-shaped connector is provided when the L-shaped connector is mounted on the power receiving side. Related to the device.

[0002]

2. Description of the Related Art In a device for feeding power to a power receiving side device such as a low voltage motor using an L-shaped connector, for example, as shown in Japanese Utility Model Laid-Open No. 25428/1992, a single-phase device is used. Means are used to attach the L-type connectors one by one to each of the power supply terminals. However, since the L-type connector shown in the conventional example uses a method in which the L-type connector corresponding to one phase is attached to the ends of three cables, three power receiving terminals are provided on the power receiving side. The members need to be provided at predetermined intervals. Therefore, when connecting the L-shaped connector to the power receiving device, it is necessary to mount the L-shaped connector in each phase in accordance with the mounting order.

However, mounting the three L-shaped connectors as described above requires extra space for mounting many L-shaped connectors on the power-receiving-side device. There is a problem that when performing a work such as mounting the work, a burden on a worker increases. Therefore, in order to solve the above-mentioned problem, it is demanded to connect a three-phase cable using one L-shaped connector, and a three-phase power supply terminal is arranged in one L-shaped connector. , 3 on the power receiving terminal member side
It is considered to provide two power receiving terminals. As described above, in order to perform three-phase power supply using one L-shaped connector, as in the case of a low-voltage connector, a three-phase plug member is placed at a predetermined distance (for example, 1 mm) from the tip of the L-shaped connector.
This can be solved by arranging them with a phase shift of 20 °) and arranging finger conductors corresponding to the plug members on the power receiving side.

However, if three plug members are arranged at an equal angle with respect to the center portion in correspondence with the three-phase cable conductor with respect to the L-shaped connector, any of the plug members can be used.
This matches the finger conductor on the power receiving side. Therefore, when connecting the connector to the terminal on the power receiving side,
° When mounted in different phases, problems such as a trouble in the operation of the device on the power receiving side occur. Therefore, for example, it is conceivable that the mounting positions of the three plug members to be arranged on the connector are not set at the same angle but are arranged at different angles. It is necessary to strictly set the structure of the insulating cylinder and other members that support. Also, strict conditions need to be set for the finger conductors and the like on the power receiving side in accordance with the arrangement intervals of the plug members, so that many problems occur in manufacturing.

[0005]

An object of the present invention is to combine a three-phase cable into one L-shaped connector instead of using a conventional L-shaped connector for each phase to supply power to a power receiving device.
It is an object of the present invention to provide a device that can be easily connected to a power receiving terminal member on the power receiving side. Further, when an L-shaped connector is mounted on the power receiving side, the device can be easily combined with uneven portions for positioning. It is an object of the present invention to provide a device that can be attached to a vehicle.

[0006]

According to the present invention, there is provided a three-phase plug member which is connected to a three-phase low-voltage cable for power supply and corresponds to the finger conductor, for a power receiving side member on which a three-phase power receiving finger conductor is arranged. The present invention relates to an apparatus configured to be capable of supplying power to a low-voltage motor as a power receiving device by mounting an L-shaped connector having the same. The invention according to claim 1 of the present invention is characterized in that the power receiving terminal member on the power receiving side includes a cylindrical member with a flange made of epoxy resin accommodating a three-phase power receiving finger conductor and a power receiving conductor in a predetermined arrangement; A flange portion for fixing the flange of the shaped member to the connection portion frame, a receiving metal member comprising a ring-shaped projection formed on the outer periphery with a fixing male screw on the outer periphery and a concave groove for positioning on the inner periphery, The L-shaped connector has an L-shaped insulator housed inside an L-shaped housing provided with a detachable handle, and the three-phase power receiving finger conductor is housed inside the L-shaped insulator. And three connection terminal rod members, one end of which is connected to each conductor of the three-phase low voltage cable for connection power supply, and the other end of which is connected to the three-phase plug. Is housed so that A projection is formed on the outer periphery of the end on the power receiving terminal side of the L-shaped housing, the projection engaging with the positioning groove formed on the ring-shaped projection of the receiving member, and the projection is formed by the positioning groove. After the three-phase plug is fitted into the three-phase power receiving finger conductor while being engaged with the three-phase power receiving finger member, the L-shape is inserted through a fastening fitting provided with a female screw screwed into a fixing male screw formed in the receiving fitting member. A connector is fixed to the power receiving terminal member.

[0007]

In the power receiving terminal member arranged in the power receiving device of the present invention, three finger conductors capable of three-phase power reception are provided collectively in one power receiving portion, so that the configuration of the power receiving terminal member can be simplified and the power receiving terminal member can receive power. The power supply path can be easily connected between the terminal member and the motor. Further, when the L-shaped connector of the present invention is mounted on the power receiving side, the three cables are positioned by positioning the protruding member provided on the housing of the L-shaped connector with the concave groove provided on the receiving member. Therefore, the phase between the plug member and the finger conductor corresponding to each other is matched, so that the L-type connector can be easily mounted. Furthermore, in the L-shaped connector of the present invention, since three cables are inserted at a time and the cable conductors are connected via the connection terminal rod members corresponding to the respective plug members, the L-shaped connector is compactly configured. It becomes possible.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The 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 disposed on the connection portion frame 5 that accommodates a power receiving device main body such as a motor, and the power receiving terminal member 50 is connected to the connection portion frame 5 together with the metal receiving member 60. It is fixed by fixing bolts 70 and 70a. Also, three finger conductors 57, 57a,... Are arranged on the power receiving terminal member 50, and three cables 1,
Connection terminal rod members 40, 40a to be connected to the conductors 2a, 2a of 1a, and plug members 47, 47a to be attached to the distal ends of the connection terminal rod members are provided corresponding to the finger conductors. ing. Further, the housing 11
Is provided with a handle 16 so that the L-shaped connector can be attached and detached by holding the handle by hand.
To improve the handling of the L-shaped connector.

The L-shaped connector 10 houses an insulating tube 20 for fixing and holding therein connection terminal rod members 40 and plug members 47... Inside an L-shaped housing 11. A cable protection fitting 18 is attached to the end on the cable side through a connection portion 17. A mounting bracket 19 is disposed at an end of the protection bracket 18, and the base of the cable is fastened and fixed by the mounting bracket 19, and a connection portion between the end of the insulating tube 20 and 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,.
.. Are arranged, and these waterproof cylinders are configured as cylindrical members made of an insulating material as described later.

The housing 11 has a structure as shown in FIGS. 2 and 3. A housing made of a casting made of aluminum or the like is divided into two parts in the longitudinal direction, and members such as screws are used. And are combined in a cylindrical shape. One member of the housing body 12 is connected to a cable side member 13.
A connection portion 17 for attaching a cable protection bracket is disposed at an end thereof, and a projecting member 15, 15a, 15a is provided around the end of the power receiving side cylindrical portion 14 provided on the other side of the main body.
b is arranged. The protruding members 15 arranged on the power receiving side cylindrical portion 14 are configured such that the angle θ1 of the protruding members 15 and 15a is set to 140 ° with respect to the center of the cylinder, and the angle formed between the protruding member 15b and other protruding members θ2 is set to 110 °. By setting the angles θ1 and θ2 between the three protruding members as described above, when the L-shaped connector is mounted on the receiving member, the mounting position is prevented from being mistaken. Is done.

Therefore, in the L-shaped connector, it is not necessary to particularly strictly confirm the positions of the plug member disposed on the power supply side and the finger conductor disposed on the power reception side, and the mounting operation can be easily performed. . In the housing 11 of the L-shaped connector, a handle 16 is provided for the main body 12, so that the connector can be easily handled using the handle.
In addition to the above configuration, a fastening member 65 provided with an internal screw is disposed at an end of the housing 11 on the power receiving terminal member side,
Fastening bracket 65 is attached to the external screw of receiving bracket member 60 on the power receiving side.
Is mounted, and the power receiving terminal member is fixedly held in a state where the connection end of the insulating cylinder 20 is locked.

The receiving member 60 shown in FIGS.
It is fixedly held by the connection portion frame together with the power receiving terminal member, and is used for mounting and fixing the power receiving side tubular portion of the housing of the L-shaped connector. In the receiving member 60, a rectangular flange 61 is integrally provided at the base of the ring portion 63, and positioning is performed in a state where the tubular member of the power receiving terminal member is inserted into the ring portion 63.
The receiving member 60 is made of a metal such as stainless steel.
.. Are arranged, and the screw holes 62 are configured so as to correspond to the screw holes provided in the flange of the power receiving terminal member.

Further, the ring portion 63 of the receiving member is provided.
Are formed around the outer threaded portion. With the L-shaped connector attached, a fastening member 65 is engaged with the outer threaded portion 64 to receive the L-shaped connector 10 and the metal member 6.
0 is fixedly held. In addition, three concave grooves 69, 69 a, 69 b are arranged on the inner surface of the ring portion 63 of the receiving member member 60, and a protrusion member provided on the housing 11 of the L-shaped connector 10 with respect to the concave grooves. When the L-type connector 10 is engaged with the power receiving terminal member by positioning the L-type connector 10 with respect to the receiving metal member 60 in a state where the 15, 15a and 15b (shown in FIG. 2) are engaged. , So that the plug member and the finger conductor can be connected.
The angle θ1 formed by the grooves 69 and 69a among the grooves.
And the angle θ2 formed by the concave grooves 69 and 69b and the concave grooves 69 and 69b are set to be the same as the respective angles of the three protruding members provided on the housing 11 of the L-shaped connector 10.

Therefore, with respect to the receiving member 60,
When the housing of the L-shaped connector is mounted, the projecting members provided around the housing are positioned relative to each other with respect to the concave grooves 69 provided on the inner surface of the receiving member member 60, so that the engagement state of both members is achieved. Can be easily set. Then, by attaching the L-shaped connector to the receiving metal member, the three plug members provided on the L-shaped connector shift the mutual phase with respect to the finger conductor of the power receiving terminal member fixed by the receiving metal member. It can be easily connected without making any mistakes.

Next, the L-shaped connector 10 of the present invention and the components disposed on the power receiving side will be described. The connection terminal rod member 40 disposed between the cable conductor 2 and the plug member 47 is shown in FIG. 7 as shown in FIG.
A screw hole 45 for mounting a plug member is provided at one end of the main body 41 in which the upper and lower sides of a copper alloy rod-shaped member are formed in parallel planes. A crimp terminal 43 is provided at the other end of the main body 41 via a step 42, and an insertion hole 44 for inserting a cable conductor is provided inside the crimp terminal 43. Then, the cable conductor is inserted into the insertion hole of the connection terminal rod member 40, pressed from the outside and tightened, so that the connection terminal rod member 40 and the cable conductor can be integrally attached.

The connection terminal rod member 4 shown in FIGS.
In contrast, a waterproof tube 30 is attached in order to protect the outer peripheral portion of the connection portion and maintain the waterproofness of the connection portion after inserting the cable conductor into the insulating tube in a fixed state. The waterproof cylinder 30 is configured as shown in FIG. 8, and forms a substantially cylindrical member using an insulating material such as rubber. The waterproof cylinder 30 is provided with a through-hole 31 at the center in the longitudinal direction, the diameter of the small-diameter portion of the through-hole 31 is made to match the outer diameter of the cable, and a connection terminal rod is provided inside the through-hole. It is configured such that the crimp terminal portion of the member can be accommodated. In addition, a large-diameter portion corresponding to a protruding member provided to protrude from the main body of the insulating cylinder is provided on an end portion side of the large-diameter portion, and a step portion of a protruding member protruding from the main body of the insulating cylinder described below is provided. A corresponding flange 33 is provided. By attaching the waterproof tube 30 to the end of the insulating tube, waterproofing can be performed at a portion where the cable conductor is connected to the connection terminal rod member.

The insulating cylinder 20 shown in FIGS.
Is housed inside the housing of the
Terminal insertion holes 23, 23a, 23b formed integrally with P rubber or the like to insert internal connection terminal rod members of the main body.
Are arranged in parallel, and plug insertion holes 27, 27a and 27b are provided at right angles to the terminal insertion holes. As shown in FIG.
The three protruding members 22, 22a and 22b are arranged as shown in FIG. 3, and of those protruding members, the protruding member 22 is configured to have a short protruding length, and the other two protruding members 22a and 22b are formed.
Are arranged so as to protrude greatly from the side. In addition, terminal insertion holes 23, 23
The connection terminal rod members are inserted and fixedly held, respectively.

The end 25 of the insulating cylinder 20 on the side of the power receiving terminal member.
Is formed as a cylindrical member provided with a receptacle insertion hole 26, as shown in FIG.
The plug insertion holes 27, 27a, and 27b are respectively arranged at a predetermined angle on the back side of, so that the plug member is mounted. In the insulating tube 20 configured as described above, as shown in FIG. 9, the plug insertion holes 27 are arranged at right angles to the terminal insertion holes 23, respectively. With the rod member inserted and positioned, insert the plug member from the plug insertion hole,
The two members can be fixed by engaging the screw portion of the plug member with the screw hole of the connection terminal rod member. Then, the distal end of the plug member is made to protrude by a predetermined length into the receptacle insertion hole 26 so that it can correspond to the finger conductor of the power receiving terminal member.

A power receiving terminal member 50 as shown in FIGS. 12 and 13 and a receiving metal member 60 as shown in FIGS. The power receiving terminal member 50 shown in FIGS. 12 and 13 is configured such that three finger conductors 57, 57a, and 57b are provided inside a cylindrical member 51 that is formed in a substantially cylindrical shape using an insulating and strong material such as epoxy resin. Is provided in a state of being embedded. The finger conductors 57 are configured in the same manner as those provided on a conventional single-core power receiving terminal member.
Connected to the end of. Further, a portion is provided from the base of the conductor 55 to be exposed toward the inside of the connection portion frame, and a screw hole 56 is arranged in the exposed portion of the conductor to supply power to a power receiving device such as a motor. Connect the wires. A rectangular flange 52 is provided at the base of the tubular member 51 so as to protrude therefrom.
The screw holes 53 are arranged at the two corners, respectively, to constitute a means for fixing and holding the connection portion frame. The receiving member 60 shown in FIGS.
Is fixedly held on the connection portion frame together with the power receiving terminal member 50, and is fixed to the frame via a square flange 61 provided at the base of the ring portion 63.
To be fixedly held.

By providing the components described above, in the power supply apparatus shown in FIG. 1, the L-shaped connector 10 is attached to the power receiving terminal member 50 fixedly held by the connecting portion frame 5, Three-phase power supply can be performed using one L-shaped connector 10. In the L-shaped 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 cylinders. 20
Are inserted into the terminal insertion holes 23 provided in the connector terminals, and plug members 47 are attached to the respective connection terminal rod members, thereby connecting the connection terminal rod members and the plug members via the insulating cylinder 20. It can be performed. By covering the connecting portion between the cable conductor and the connecting terminal bar member with the waterproof tube 30, the insulating state of the connecting portion can be maintained and moisture can be prevented from entering the connecting portion. .

Furthermore, a half-split housing 11 is attached to the outer peripheral portion of the insulating cylinder and fixed by screws or the like, so that the L-type connector can be easily handled and mechanical strength can be imparted. Like that. Said L
In the type connector 10, the cable protection metal fitting 18 is disposed at the end of the housing on the cable side, and
Since an integral cylindrical member is formed between the cable connector 18 and the cable protection fitting 18 via an engaging portion, 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 end of the insulating cylinder on the cable side is also protected by the cable protection metal fitting, so that the L-shaped connector is attached to and detached from the connection portion frame. The operation can be performed in the same manner as for a conventional single-core L-shaped connector.

Further, when the L-shaped connector is attached to the power receiving terminal member arranged on the connecting portion frame, the projection provided on the housing is engaged with the recessed groove provided on the receiving metal member, so that the L-shaped connector is engaged. Attachment of the connector and positioning of the plug member with respect to the finger conductor can be performed automatically. Furthermore, the power receiving terminal member 50 and the receiving member member 60 arranged on the connection part frame side are fixed to the connection part frame using fixing bolts 70 with the flanges of both members overlapped. ,
Attached state of the L-type connector by protecting the outer peripheral surface of the plastic power receiving terminal member with a stainless steel receiving member and fixing and holding the end of the L-shaped connector housing to the receiving member. Can be accurately maintained.

[0023]

Since the connector of the present invention is constructed as described above, three finger conductors capable of three-phase power reception are used in the power receiving terminal member arranged in the power receiving device.
Since the power receiving sections are provided collectively, the configuration of the power receiving terminal member can be simplified, and the power supply path between the power receiving terminal member and the motor can be easily connected. Further, when the L-shaped connector of the present invention is mounted on the power receiving side, the three cables are positioned by positioning the protruding member provided on the housing of the L-shaped connector with the concave groove provided on the receiving member. Therefore, the phase between the plug member and the finger conductor corresponding to each other is matched, so that the L-type connector can be easily mounted. Furthermore, in the L-shaped connector of the present invention, since three cables are inserted at a time and the cable conductors are connected via the connection terminal rod members corresponding to the respective plug members, the L-shaped connector is compactly configured. It becomes possible.

[Brief description of the drawings]

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

FIG. 2 is a side view showing a configuration of a housing arranged in the L-shaped connector of the present invention.

FIG. 3 is a bottom view of the housing of FIG. 2;

FIG. 4 is a side view of the receiving member of the present invention.

FIG. 5 is a front view of the receiving bracket member on the L-shaped connector side.

FIG. 6 is a side view of the connection terminal rod member of the present invention.

FIG. 7 is a plan view of a connection terminal rod member.

FIG. 8 is an explanatory diagram showing a configuration of a waterproof tube.

FIG. 9 is a side view of the insulating cylinder of the present invention.

FIG. 10 is a front view of the insulating tube on the cable side.

FIG. 11 is a bottom view of the insulating cylinder.

FIG. 12 is a side view of a power receiving terminal member used in the present invention.

FIG. 13 is a front view of the power receiving terminal member on the L-shaped connector side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cable, 2 conductors, 5 Connection part frame, 10 L-shaped connector, 11 Housing, 1
4 power receiving side tubular part, 15 protruding member, 18 cable protection bracket, 19 mounting bracket, 20 insulating cylinder, 22 protruding member, 23 terminal insertion hole, 26
Recep insertion hole, 27 Plug insertion hole, 30
Waterproof tube, 33 flange, 40 connection terminal rod member, 43 crimp terminal portion, 45 screw hole, 47
Plug member, 50 power receiving terminal member, 51 tubular member, 55 conductor, 57 finger conductor, 6
0 Receiving bracket member, 61 flange, 63 ring part, 65 fastening bracket, 69 concave groove part.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masataka Okada 11-22, Gobonmatsu-cho, Atsuta-ku, Nagoya City, Aichi Prefecture Inside Chubu Plant Service Co., Ltd. (72) Inventor Mikio Makino 1008, Niibori, Kumagaya-shi, Saitama (72) Inventor Seiichiro Hayashi 1008 Shinbori, Kumagaya-shi, Saitama Prefecture Mitsubishi Cable Industries, Ltd. Kumagaya Works (56) References JP-A-58-14081 (JP, A) 146882 (JP, U) Japanese Utility Model 374478 (JP, U) Japanese Utility Model 4-25428 (JP, U) Japanese Utility Model 4-25426 (JP, U) Japanese Utility Model 4-25427 (JP, U) Hikaru 4-39032 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 15/00-15/196

Claims (1)

(57) [Claims] 1. An L-shaped connector which is connected to a power supply three-phase low voltage cable and has a three-phase plug member corresponding to the finger conductor is attached to a power receiving side member on which a three-phase power receiving finger conductor is arranged. An apparatus configured to be capable of supplying power to a low-voltage motor as a power receiving device, wherein the power receiving terminal member on the power receiving side includes an epoxy housing a predetermined arrangement of a three-phase power receiving finger conductor and a power receiving conductor. A cylindrical member with a flange made of resin; a flange portion for fixing the flange of the cylindrical member to the connection portion frame; a male screw for fixing on the outer periphery; And a receiving member member comprising a protruding portion. The L-shaped connector accommodates an L-shaped insulator in an L-shaped housing provided with a detachable handle. Inside the body, a three-phase plug that engages with the three-phase power receiving finger conductor, one end is connected to each conductor of the three-phase low-voltage cable for connection power supply, and the other end is connected to the three-phase plug, respectively. The three connection terminal rod members are housed in an L-shape with each other, and a positioning member formed on a ring-shaped protrusion of the receiving metal member is provided on an outer periphery of an end of the L-shaped housing on the power receiving terminal side. A projection is formed to engage with the concave groove. After the three-phase plug is fitted into the three-phase power receiving finger conductor while the projection is engaged with the positioning concave groove, a fixing formed on the receiving bracket member is formed. A three-phase collective connector for low-voltage motor power supply, wherein the L-shaped connector is fixed to the power receiving terminal member via a fastening fitting having a female screw screwed into a male screw for use.