JP2545882Y2 - L type connector for high voltage cable - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a cable connector for connecting a high-voltage power supply. In particular, the connector on the power supply side is not directly attached to the power receiving side, but is pushed in using screw means. Related to the device to be connected.

(Prior art) Conventionally, as a high-voltage cable connection device, for example,
What is shown in Unexamined-Japanese-Patent No. 1-146729 etc. is used.

In the cable connector shown in the conventional example, a socket (recept) is arranged on a fixed side, and a plug to be inserted into the receptacle is provided in a connector member on a connection side,
The conductor is connected by inserting the plug into the receptacle.

The connector member on the connection side has a substantially L-shape, and a plug is provided inside a shortly protruding cylindrical insulator. In the connector, a plug is arranged below a concave portion formed inside a cylindrical insulator, and a cylindrical protruding member made of the insulator is also arranged around the receptacle.

Then, when connecting the two, the fixed-side protruding member is inserted into the concave portion of the cylindrical insulator of the connector, and at the final stage of the insertion, the plug enters the receptacle, and the conduction state of both conductors is set. Is done.

(Problem to be Solved by the Invention) In the conventional cable connector as described above, when connecting the receptacle and the plug, it is necessary to accurately set the contact state between the two. And since the inner diameter of the receptacle is made smaller than the outer diameter of the plug, and the plug is inserted with the receptacle expanded, it is necessary to apply a large pressing force when connecting both members. There is.

Also, when connecting the connector, when inserting the cylindrical insulator provided on the receptacle side into the concave portion of the cylindrical insulator provided on the connector side, insert the concave portion so as to expand the concave portion outward. Therefore, there is a problem that the insertion operation is troublesome and places a heavy burden on the operator.

When connecting and disconnecting the connector, in addition to the inconvenience of handling due to the large weight of the connector, a troublesome work is required due to conditions such as a large force required for fitting the two. There is a disadvantage that you are forced to.

(Purpose of the Invention) The present invention solves the above-mentioned drawbacks of the conventional cable connector. A fastening member having an inner screw is provided on the connector side, and a screw member provided on the fixed side is provided. The connector can be mounted using the fastener, and in the initial stage of mounting, when the conductor is not connected to each other and the fastener is engaged for a predetermined length or more. It is an object of the present invention to provide a device which is configured so that a conductor is connected only to the device.

(Means and Actions for Solving the Problems) The present invention provides an L-shaped connection having a compression type terminal connected to a conductor of a cable, and a plug detachably fitted with a finger conductor provided by hanging from the tip of the compression type terminal. L is provided so as to cover the conductor, the base end of the plug and the compression type terminal, and is detachably taperedly engaged with the insulating bushing.
Using an L-shaped connector having a mold-type insulating cylinder and an L-shaped aluminum housing that covers and protects the insulating cylinder, via a tubular conductor with a built-in finger conductor in an insulating bushing protruding from a fixing member on the power receiving side. The present invention relates to an L-shaped connector for a high-voltage cable configured to supply electric power.

In the present invention, the aluminum housing is formed into a combined cylindrical structure that is split into two in the axial direction, and an annular concave groove is provided in a peripheral portion on the plug side of the aluminum housing obtained by combining the cylindrical bodies. An annular ring formed by combining two semi-circular members into an annular shape is rotatably engaged, and an annular fastening member having a base fixed to the periphery of the annular ring with a screw is provided on the power receiving side. The L-shaped connector is configured to be fixed to the fixing member by being screwed into a ring-shaped fitting protruding from the fixing member so as to surround the base of the insulating bushing.

With the configuration described above, in the present invention, the L-shaped aluminum housing that covers and protects the L-shaped insulating cylinder is fixed to the fixing member on the power receiving side. (By the way, 6.6k
Even if the weight of the L-type connector for V high-voltage motor is about 11kg / piece), it can be fixed firmly and stably.
There is no danger that the L-shaped connector will be disconnected even if it receives the vibration of the high voltage motor. In addition, in the present invention, since the method of fixing the annular fastener to the annular ring with a screw is used, both can be freely replaced.Thus, if the inner diameter of the annular ring is changed, There is also an advantage that the annular fastening fitting and the annular receiving fitting can be applied to L-shaped connectors of a plurality of sizes.

In the present invention, since the length of the finger conductor to be attached to the plug is set to be short, the plug is inserted into the plug receiving portion of the finger conductor during the operation of tightening and fixing the fastener by screw connection. It can be worn. Further, since the screw engaging portion functions as a guide means when the plug is mounted, the conductor can be connected in a state where both members of the plug and the finger conductor are accurately positioned.

(Embodiment) The configuration of the L-shaped connector for a high-voltage cable according to the present invention will be described with reference to the illustrated example.

The embodiment of the present invention shown in FIG. 1 shows a positional relationship when the L-shaped connector 20 is connected to the fixed side member 1. The fixed-side member 1 is disposed, for example, on the power receiving side of the motor. The fixed-side conductor 10 is sandwiched between the inner fixing flange 3 and the outer receiving bracket 5 with respect to the motor side frame 2. And fixed.

The fixed-side conductor portion 10 has a copper rod 11 covered with an insulator 12, and a screwing means for connecting to a motor wiring is provided at an inner end of the motor-side frame 2. In addition, since the periphery of the hole through which the fixed-side conductor portion 10 of the side frame 2 penetrates is sealed by the O-ring 4 provided for the inner fixing flange 3, the airtightness inside the frame is maintained. You can do it.

Also, at the portion protruding outside the side frame 2,
A bushing 18 formed by extending the insulator layer 12 into a cylindrical shape.
And a holding tubular member 14 in which the tip end of the copper rod 11 is formed in a tubular shape, is provided as a double tubular member. An insulating stopper 31 is provided on the upper part of the double cylindrical members 14 and 18,
A plug of a connector to be described later is inserted through a through hole provided at the center of the insulating stopper 31.

In the fixing portion, a receptacle is provided inside the cylindrical member, and the receptacle includes a finger conductor 15 composed of a large number of conductive plate members, and a base of the finger conductor. A lower spring 17 fixed to the conductor connection portion 13 and an upper spring 16 for setting an upper opening of the finger conductor are provided.

Further, the receiving metal fitting 5 has a base fixed to the side frame 2 and has a screw portion 6 formed around a rising portion thereof. The screw portion 6 provided on the receiving fitting 5 is used when a screw of a fastening fitting provided at an end of the L-shaped connector engages and separates and connects the connector, as described later.

An L-shaped connector 20 provided as a power-supplying-side member with respect to the fixed-side member 1 has an outer shape covered with an aluminum housing 21 and has a substantially L-shape. The part 40 is provided in a state of being bent at a right angle.

In the main body 22, a compression type copper terminal 33 is connected to an end of a cable 35 on the power supply side, and these members are covered with an insulator layer 23 and a semiconductive layer 24.

Further, as in the case of a general high-voltage cable, the cable 35 was provided with an insulator layer 37, a semiconductive layer 38, and a copper tape 39 around the conductor 36, and an insulator layer provided around the conductor 36. Use something. Around the cable 35 and the compression type copper terminal 33, a spacer 34 made of an insulator layer and a semiconductive layer 34a are coated.

The end of the cable 35 is fixedly held by the compression type copper terminal 33, and a plug member is disposed at right angles to the compression type copper terminal 33. The plug member includes a plug 30 inserted into the plug receiving portion 19 of the fixed-side finger conductor 15 through the hole of the insulating stopper 31, and a spring washer 32. Each of the constituent members is accommodated in a deep portion of a concave portion provided inside a cylindrical member formed of an aluminum housing and an insulating layer covering the inside.

The aluminum housing 21 disposed outside the L-shaped connector 20 is formed by combining members obtained by dividing a cylinder into two parts. A member having a circular cross section is attached, and a fixing portion of the two members is fixed using a bolt 26 or the like.

In addition, in addition to the mounting bolt member around the housing, in addition to the housing 21, a cap 25, a handle 28, a waterproof tube 60, and a terminal cap 61 are disposed in addition to the housing 21,
A protective bracket 62 is attached to the end of the main body via the rear stage 27 to protect the cable. The metal fitting 62 can also be attached to a frame of the device via a bracket 63.

(Configuration of Connection Member of L-Type Connector and Operation of Fixing L-Type Connector to Fixed Side Member) In the L-type connector 20 shown in FIG. 1, the mounting portion 40 is provided around the aluminum housing. Groove
A fixing ring 55 and a fastening member 50 are disposed on the fixing member 41, and the fastening member 50 is screwed into the receiving member 5 on the fixed side. It is designed to be able to connect with the body.

The fastening fitting 50 and the fixing ring 55 provided on the mounting portion 40 are configured as shown in FIGS. 2 and 3, respectively. The example of FIG. 2 shows a case where the fastening fitting 50 and the fixing ring 55 are integrally attached by using a flathead screw 58.

In the example shown in FIGS. 2 (a) and 2 (b), the fastening member 50 has an upper screw portion 51 and a lower screw portion 52 provided on the inner surface of a substantially cylindrical member, and the upper screw portion 51 is fixed. Ring 55
In order to position the fixing ring with respect to the fastener.

The lower screw portion 52 of the fastening member engages with the screw 6 provided at the rising portion of the receiving member 5, and the engagement of the screw allows the operation of attaching and detaching the L-shaped connector using the fastening member. To do. In addition, a recess 53 for engaging a tool is provided on the surface of the fastening fitting 50, and the fastening fitting can be easily rotated by engaging the tool through the recess.

A fixing ring 55 arranged inside the fastening fitting 50
Is configured as shown in FIGS. 3 (a) and 3 (b), and is configured as an annular member by combining two semicircular members. Further, the fixing ring 55 has a screw hole 57 for fixing to the fastening fitting with a screw.
The countersunk screw 58 is attached by matching the hole 57 with the screw hole 54 of the fastening fitting.

When attaching the combination of the fastening fitting and the fixing ring configured as described above to the mounting portion 40 of the housing 21, first, the fixing ring is divided into two parts with respect to the concave groove 41. 55 is attached, and the fastening fitting 50 is attached to the outside thereof, and both screws are engaged. Then, the fastening fitting 50 is rotated to position the fixing ring 55, and the screw holes of both members are made to coincide with each other.

As described above, in a case where the L-shaped connector 20 is mounted on the fixed side member 1 in a state where the fastening fitting 50 is mounted on the mounting portion 40, as shown in FIGS. The lower screw portion 52 of the fastening member 50 is engaged with the screw portion 6 of the receiving member 5, and the mounting portion is moved toward the fixed member by rotating the fastening member 50. At this time, the fixing ring 55 slides against the concave groove 41 provided in the mounting portion 40, and the lower portion 43 of the concave groove 41 is pressed by the lower portion of the fixing ring 55, and the tightening action is performed. Done.

Then, during the operation of tightening the fastening fitting 50,
The plug 30 is engaged with the plug receiving portion 19 of the finger conductor 15 and inserted so as to push the plug receiving portion apart.

In addition, the length A of the screw portion in the fastening fitting of the present invention.
Is set to be longer than the length B of the portion where the plug 30 contacts the plug receiving portion 18.

Therefore, as described above, when the fastening fitting 50 is tightened, in the state where the end of the fastening fitting 50 is first engaged with the screw portion 6 of the receiving fitting 5, as shown in FIG. The plug 30 is separated from the receiving portion 19.

Then, as the fastening fitting 50 is tightened, the plug approaches the plug receiving portion, the plug is inserted into the plug receiving portion, and a state is established in which both conductors are conducted.

After that, by still tightening the fastening bracket 50,
The plug 30 is inserted deeply into the plug receiving portion 19, and extends over the entire range of the contact length B of the plug receiving portion with respect to the plug.
When both come into contact with each other, the operation of attaching the L-shaped connector to the fixed member ends.

Also, as described above, the plug 30 is
When installed on 19, the insulation stopper on the upper part of the plug receiving part
The conductors of the two are connected in a state where a space is formed between the plug 31 and the large-diameter flange at the base of the plug.

At the end of the operation of mounting the L-shaped connector, a contact surface 44 set on the end of the housing of the mounting portion 40 is set.
Is pressed against the contact surface 7 of the receiving fitting 5.

As described above, the fastening fitting is not provided directly on the recessed groove of the housing, but is provided via the fixing ring. With the L-shaped connector of the present invention, the fastening fitting is mounted on the fixed side member. Even if it is rotated, the fixing ring slides with respect to the concave groove, so that the fastener can be smoothly rotated.

Also, when removing the L-shaped connector from the fixed side member, if the fastening bracket 50 is rotated in the opposite direction to the mounting direction, the plug is first separated from the plug receiving portion, and then the fastening bracket is screwed into the receiving bracket. To get out of the department. At this time, the action of separating the fixing member 55 from the fixed side member by the rotation of the fastening member acts as a force for pushing up the upper step portion 42 of the concave groove 41 because the upper portion of the fixing ring 55 acts. The action of removing the L-shaped connector by rotation is favorably performed.

(Effects of the Invention) Since the connector of the present invention has the above-described configuration, an L-shaped aluminum housing that covers and protects the L-shaped insulating cylinder is fixed to the fixing member on the power receiving side. Therefore, even a heavy-weight high-voltage motor connector such as an L-type connector for a high-voltage motor can be fixed sufficiently and stably, and the L-type connector is detached even when subjected to vibration of the high-voltage motor. There is no fear. In addition, in the present invention, since the method of fixing the annular fastener to the annular ring with a screw is used, both can be freely replaced.Thus, if the inner diameter of the annular ring is changed, There is also an advantage that the annular fastening fitting and the annular receiving fitting can be applied to L-shaped connectors of a plurality of sizes. Further, in the present invention, an annular concave groove is provided on a peripheral portion on the plug side of the aluminum housing combined with the cylindrical body, and a semicircular member is provided in the annular concave groove.
Since the annular ring formed by combining the two is rotatably engaged, the operation of attaching and detaching to and from the fixing member can be easily performed.

When the L-shaped connector of the present invention is mounted on the fixed member, the movement of the clamp is rotated through an annular ring provided on the clamp. Can be performed smoothly. Furthermore, by using the connection means by screw engagement when the connector is mounted on the fixed side, it is not necessary to directly push the plug into the finger conductor of the receptacle, and the connection operation can be easily performed. Further, since the screw engaging portion functions as a guide means when the plug is mounted, the conductor can be connected in a state where both the plug and the finger conductor are accurately positioned.

[Brief description of the drawings]

FIG. 1 is a side view showing the structure of the cable connector of the present invention, FIG. 2 is a view showing the structure of a fastening member, FIG. 1 (a) is a sectional view, FIG. 1 (b) is a front view, and FIG. FIG. 4A is a cross-sectional view, FIG. 4B is a front view, and FIG. 4 is an enlarged cross-sectional view of a mounting portion using a fastener, and FIG. 5 is an L-shaped connector. FIG. 7 is an explanatory diagram of an initial state in which is attached to a fixed side member. Reference numeral 1 in the drawing: fixed member, 5: receiving bracket, 6: screw portion, 10
…… Fixed side conductor, 11… Copper rod, 13… Conductor connection part, 15
... finger conductor, 18 ... bushing, 19 ... plug receiving part, 20 ... L-shaped connector, 21 ... aluminum housing, 30 ... plug, 31 ... insulation stopper, 33 ... compression type copper terminal, 35 …… Cable, 40 …… Mounting part, 41 …… Groove,
42 …… Upper part, 43 …… Lower part, 50 …… Clamp fitting, 51 ・
52: Screw part, 55: Fixing ring, 56: Screw part.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mikio Makino 1008 Shinbori, Kumagaya-shi, Saitama Mitsubishi Cable Industry Co., Ltd. Kumagaya Works (56) References JP-A-61-263078 (JP, A) Akira Mikai 62-37186 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. An L-shaped connection conductor having a compression type terminal connected to a cable conductor, a plug removably fitted with a finger conductor provided to hang down from the distal end thereof, a base end of the plug and An L-shaped connector provided so as to cover the compression-type terminal and having an L-shaped insulating cylinder detachably engaged with the insulating bushing and detachably engaged with the insulating bushing, and an L-shaped aluminum housing that covers and protects the insulating cylinder. An L-shaped connector for a high-voltage cable configured to supply power via a tubular conductor with a built-in finger conductor in an insulating bushing protruding from a fixed member on the power receiving side, wherein the aluminum housing is split into two in the axial direction. The aluminum housing combined with the cylindrical body is provided with an annular concave groove in a peripheral portion on a plug side, and the annular concave groove has two semicircular members. An annular ring formed into an annular shape is rotatably engaged with the annular ring, and an annular fastening member having a base fixed to the periphery of the annular ring with a screw is attached to the fixing member on the power receiving side. An L-shaped connector for a high-voltage cable, wherein the L-shaped connector is fixed to a fixing member by being screwed into an annular receiving fitting protruding so as to surround the base.