JP2893374B2 - Connector cable protection member fixing device - 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-shaped connector used for supplying power to a power receiving device such as a low-voltage motor, and more particularly to a method for arranging a cable in a state of being housed inside a cable protection tube. Further, the present invention relates to a connector cable protection member fixing device configured to easily attach a cable protection tube to a cable side housing of an L-shaped connector.

[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-shaped connectors to the respective power supply terminals one by one. 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.

When a three-phase cable is inserted into and attached to the L-shaped connector, the cable is often connected in a state where the cable is exposed from the end of the L-shaped connector. In places where it is necessary to ensure the safety of the cable, the cable protection tube is connected to the L-shaped connector while the cable is housed in the cable protection tube. As described above, when attaching the cable protection tube to the L-shaped connector in a state where the cable is housed in the cable protection tube, an inner screw is cut at the end of the cable-side housing of the L-shaped connector, and the cable protection tube is attached. Is fixedly held in a state in which a screw portion of a tip fixing portion provided at an end of the head is engaged. The cable-side housing of the L-type connector is made of a casting such as aluminum, and forms a substantially cylindrical cable-side housing by combining two semi-cylindrical members. It is designed to be fixed to a member.

However, forming an internal thread on a cable-side housing formed in a semi-cylindrical shape is cumbersome for cutting, and when two half-split members are combined, the screw is accurately formed. There is a problem that positioning is not performed. Therefore, a groove for mounting a screw ring is formed on the end of the cable-side housing, and a ring member is attached to the groove, so that the thread provided at the distal end of the cable protection tube is formed into a ring member. It is conceivable that the cable protection tube is fixed to the L-shaped connector by fitting to the internal thread portion of the cable. However, when attaching the inner thread portion of the cable protection tube to the inner thread portion provided in the cable side housing, the problem that the cable protection tube cannot be easily fixed in a state where the ring member freely rotates. Occurs.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problem of connecting a cable protection tube to an L-type connector in an apparatus for supplying power to a power receiving device using the L-type connector. For the ring member housed in the ring groove provided at the end of the cable side housing, a means for preventing rotation of the ring member is provided on the fitting surface of the two members, and the ring is attached when the screw portion of the cable protection tube is attached. Providing a device that can prevent the member from rotating,
It is another object of the present invention to provide a device in which a sealing means is arranged at a connection portion between the cable protection tube and the L-shaped connector to prevent moisture and the like from entering the inside of the L-shaped connector from the cable protection tube. And

[0007]

According to the present invention, an L-shaped connector is arranged at an end of a low-voltage cable, and an L-shaped connector is attached to a power receiving terminal member on the power receiving side to supply power to a power receiving device such as a motor. The present invention relates to a device that is configured to be capable of being attached and attached to an L-shaped connector in a state where a cable is protected by a cable protection tube. In the present invention, a separate cable-side housing is disposed on the cable side with respect to the main body housing that protects the outer surface of the L-shaped connector, and a ring groove provided on an inner surface of an end portion of the cable-side housing includes:
A ring member for fixing the cable protection tube is arranged, and a means is provided for non-rotatably supporting the ring member in the ring groove of the cable side housing. Further, in the present invention, with respect to the cable side housing of the L-shaped connector, a concave portion is arranged in a ring groove provided on an inner surface of a distal end portion thereof, and around a ring member arranged corresponding to the ring groove. The ring member can be provided non-rotatably with respect to the ring groove by providing the protrusion and engaging the concave and convex portions of both members. Further, in the present invention, a seal member is arranged inside a cable protection tube screwed into an inner thread portion provided on an inner peripheral surface of the ring member, and a cable is passed through a hole provided in the seal member. Means for sealing between the inside of the cable protection tube and the cable-side housing can be configured.

[0008]

According to the apparatus of the present invention for attaching a ring member to a cable side housing and inserting and fixing a screw portion of a cable protection tube to the ring member, a concave portion is formed in a ring groove provided in the cable side housing. Is provided, and the projection provided on the ring member is engaged with the concave portion,
The rotation of the ring member with respect to the ring groove can be prevented. In the apparatus for disposing a ring member in the ring groove of the present invention, for example, a flat portion is formed on the surface of the ring member, and a flat surface corresponding to the flat portion of the ring member is formed on the inner surface of the ring groove. By arranging the parts
Means for preventing rotation of the ring member can be configured. Further, by forming an arc portion having a different radius on the surface of the ring member or providing a step portion in the length direction of the ring member, the rotation of the ring member inside the ring groove can be prevented. . In addition to providing the means for preventing the rotation of the ring member, in the present invention, a sealing member is disposed between the inner surface of the end of the cable protection tube and the cable, and the space between the cable protection tube and the L-shaped connector is provided. This can constitute a means for preventing the passage of moisture and the like. Then, in order to allow the cable to penetrate the seal member, by providing a slit in the seal member, the cable can be easily mounted.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an apparatus for fixing a cable protection member of a connector according to the present invention. The example shown in FIG. 1 shows a case in which a three-phase cable is collectively connected to an L-shaped connector, and a device for feeding power to a power receiving device main body such as a motor using the L-shaped connector is shown. The connecting portion frame 5 that houses the power receiving device main body includes a power receiving terminal member 5.
0, and the power receiving terminal member 50 is fixed to the connection frame 5 together with the receiving metal member 60 by fixing bolts 66, 6
6a. Also, three finger conductors 57 are arranged on the power receiving terminal member 50, and plug members 47, 47a are arranged on the L-shaped connector 10 corresponding to the finger conductors. The connector 10 has conductors 2, 2a... Of three cables 1, 1a.
, And a plug member 47 attached to the distal end of the connection terminal rod member.
47a are provided. Further, a handle 16 is provided on the main body housing, and the handleability of the L-shaped connector can be improved by holding and holding the handle by hand.

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 main body housing 11. At the end on the cable side of 11,
The cable-side housing 18 is attached via the connection portion 17. A ring groove 19 is disposed at an end of the cable-side housing 18, and a tip fixing portion 81 disposed at an end of a cable protection tube for protecting a cable is inserted into the ring groove 19 and locked. Thus, a means for holding and fixing the cable protection tube 80 is configured. In addition, a waterproof tube 30, 30a,... Is provided for a portion where the cable conductor is connected to the connection terminal rod member 40, in order to maintain an insulation state around the portion and protect the connection portion. These waterproof cylinders are configured as cylindrical members using a material having an insulating property, as described later. By attaching the waterproof tube 30 to the end portion of the insulating tube 20, a function such as waterproofing can be exerted at a portion where the cable conductor is connected to the connection terminal rod member.

The insulating cylinder 20 is housed in the housing of the main body of the L-shaped connector, and is integrally formed of EP rubber or the like.
.. Are inserted in parallel, and insertion holes for plug members 47 are provided at right angles to the terminal insertion holes. Insulating cylinder 20 configured as described above
In the above, the plug insertion holes are arranged at right angles to the terminal insertion holes, and the plug member is inserted from the plug insertion hole with the connection terminal rod member inserted and positioned in the terminal 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 bar member. Then, the distal end portion of the plug member is protruded by a predetermined length into the terminal insertion hole so that it can correspond to the finger conductor of the power receiving terminal member.

A power receiving terminal member 50 and a metal receiving member 60 are disposed on a connection frame of a power receiving side device according to the present invention. The power receiving terminal member 50 has a cylindrical member 51 made of a material having insulation and strength, such as epoxy resin, having a substantially cylindrical shape.
7 are provided in an embedded state. The finger conductors 57 are configured similarly to those provided in a conventional single-core power receiving terminal member, and the end portions of the conductors 55 arranged in the length direction of the power receiving terminal member are provided. Connected to. Further, a portion exposed from the base of the conductor 55 to the inside of the connection portion frame is provided, and a screw hole is arranged in the exposed portion of the conductor to connect a power supply line to a power receiving device such as a motor. Let it do. In addition, the cylindrical member 5
A square flange is protrudingly provided at the base of the first unit, and screw holes are respectively arranged at corners of the flange to constitute a means for fixing and holding the connection part frame. The receiving fitting member 60 is fixedly held on the connecting portion frame together with the power receiving terminal member 50.

The main body housing 11 has a structure as shown in FIGS. 2 and 3. A main body 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. It is configured by being combined in a cylindrical shape. One member of the main body 12 of the housing is a cable-side member 13, and a connection portion 17 for attaching the cable-side housing is disposed at one end thereof. Projecting members 15, 15 around the part
a and 15b are arranged. The protruding members 15 arranged on the power receiving side member 14 are angle θ1 of the protruding members 15 and 15a.
Is set to 140 ° with respect to the center of the cylinder,
Is set to 110 °. And angles θ1 and θ2 between the three protruding members.
As described above, when the L-shaped connector is attached to the receiving member, the attachment position is prevented from being erroneously set.

Therefore, in the L-shaped connector 10 of the present invention, the positions of the plug member disposed on the power supply side and the finger conductor disposed on the power reception side do not need to be particularly strictly confirmed, and the mounting operation can be easily performed. be able to. Also,
The main body housing 11 of the L-shaped connector 10 is provided with a handle 16 for the main body 12, so that the connector can be easily handled using the handle. In addition to the above configuration, a screw portion that engages with the fastening member 65 is formed at the end of the housing 11 on the power receiving terminal member side, and the connection end of the insulating cylinder 20 is locked to the power receiving terminal member on the power receiving side. In this state, it is tightened and fixedly held by the fastening fitting 65.

The receiving member 60 shown in FIGS.
An example shown in FIG. 4 shows a cross section taken along the line AA ′ of FIG.
The power receiving side member 14 is used for mounting and fixing. In the receiving member 60, the ring 6
3 is provided integrally with a square flange 61 at the base thereof, and a tubular member 51 of a power receiving terminal member is provided inside the ring portion 63.
Positioning is performed in a state in which is inserted. The receiving member 60 is made of a metal such as stainless steel, and screw holes 62 are provided at corners of the flange, and the screw holes 62 are provided on the flange of the power receiving terminal member. It is configured as matching the screw hole.

Further, the ring portion 63 of the receiving member member
An external thread 64 is formed around the outer periphery of the L-shaped connector. With the L-shaped connector attached, a fastening member 65 is engaged with the external threaded portion 64 to fix and hold the L-shaped connector to the receiving member. Let it do. The inner surface of the ring 63 of the receiving member 60 has three concave grooves 69 and 6.
9a and 69b are arranged, and the L-shaped connector is positioned with respect to the receiving member in a state where a protrusion (not shown) provided on the housing of the L-shaped connector is engaged with the concave groove. Thus, when the L-shaped connector is engaged with the power receiving terminal member, the plug member and the finger conductor can be connected. Of the grooves, the angle θ1 formed by the grooves 69 and 69a, the grooves 69 and 69b, and the grooves 69 and 69
The angle θ2 formed by b is set to be the same as the angle of each of the three projecting members 15, 15a, and 15b provided on the main housing 11 of the L-shaped connector.

Therefore, with respect to the receiving member 60,
When the main body housing of the L-shaped connector is attached, the projecting members 15... Provided around the housing are positioned relative to each other with respect to the concave groove portions 69. Can easily be set. Then, by attaching the L-shaped connector 10 to the receiving metal member, the three plug members provided on the L-shaped connector are connected to the finger conductor 57 of the power receiving terminal member 50 fixed by the receiving metal member.
The connection can be easily made without changing the phase of each other.

[0018]

[Structure of the connection part between the cable-side housing and the cable protection tube]
As shown in FIGS. 6 and 7, the cable side housing 18 disposed at the end of the cable side is provided with a connection portion 17 at the end on the main body housing side, and a ring groove 19 inside the other end portion. Has been arranged. In addition, the ring groove 1
9 is provided on the inner surface of the end portion, and is fixed by a fixing screw member via flange members 18A and 18B which are arranged so as to protrude up and down.
Together, they are configured as a hollow member, and house the connection portions of the cables 1... As shown in FIG.

With respect to the cable side housing 18,
In a state where the cable protection tube 80 is attached, as shown in FIG. It is fixed and held in a state where it stops. The protection tube 84 constituting the cable protection tube 80 includes:
A commercially available “AP. Tube” and “AP. Connector” can be used. In addition, a cable protection tube of any configuration can be used as long as it is a flexible pipe-shaped member that can protect the cable housed inside.

As the ring member 70 to be mounted in the ring groove 19 of the cable side housing 18, a screw portion of a distal end fixing portion 81 provided at the distal end of the cable protection tube 80 is mounted inside the ring groove 19. When inserting 82, it is necessary to use a structure that prevents the ring member 70 from rotating. Then, in the present invention, in order to prevent the rotation of the ring member, the configuration shown in FIGS. 9 to 12 can be adopted. In the example shown in FIG. 9, protrusions 72 and 72 a are arranged on an outer peripheral portion of a ring member 70 provided with an inner screw portion 71 on an inner surface, and the protrusions are formed on recesses 72 b and 72 c provided on a ring groove 19. 72, 72
are engaged with each other. The concave portions 72b and 72c provided in the ring groove portion 19 are provided with two half-shaped housing members 1 constituting the cable side housing 18.
When the housing members are provided at the connection portions 8a and 18b, the two housing members can be configured to have the same shape.

When the two housing members constituting the cable-side housing 18 are connected via a fixed portion, the projection of the ring member is arranged at the connection portion so that the ring member is connected to the cable. Can be combined with the side housing. Therefore, as described above, the concave portion is provided in the groove for the ring, and the protrusion is disposed on the ring member, so that when the cable protection tube is attached to the distal end portion of the cable-side housing, the inner screw portion has the ring. It can be prevented from rotating inside the groove for use, and the work of attaching the cable protection tube can be easily performed.

In addition to the embodiment shown in FIG. 9, in the present invention, as shown in FIG. 10, step portions 73, 73a are formed on a ring member 70a, and arc surfaces having different radii are formed on the outer peripheral portion. Is formed. Then, housing members 18a and 18b constituting the cable side housing 18 are provided.
Are provided with ring grooves 19a and 19b having a radius corresponding to the arc of the outer peripheral surface of the ring member. Therefore, when the ring member 70a is attached to the ring groove, the steps 73, 73a of the ring member are locked in contact with the end of the housing member 18b, and the cable protection tube is attached to the ring member. When mounted, the ring member can be prevented from rotating inside the ring groove.

In the example shown in FIG.
The flat portions 74 and 74a are arranged on the outer peripheral portion of the cable housing b, respectively.
Flat portions 74b and 74c are provided corresponding to the flat portions 74 and 74a of the ring member, respectively. The flat portion provided in the ring groove portion 19c can be provided in a connection portion of the housing members 18a and 18b constituting the cable-side housing.
As in the case of, the two housing members can be molded with the same mold. Further, in the example shown in FIG. 12, the ring member 70c is moved stepwise 75, 75a in the length direction.
In the ring groove portion arranged in the cable side housing, the width of the groove is made different according to the length of the ring member.

In the ring members shown in FIGS. 9 to 12, the inner screw portion 71 is provided on the inner surface of the ring member, as shown in FIG. The member does not rotate inside the ring groove, and the distal end fixing portion of the cable protection tube can be easily inserted. In addition, the cable side housing of the present invention is made of a casting such as aluminum similarly to the main body housing, but the ring member attached to the cable side housing can be made of a material such as stainless steel. . In the case where the L-shaped connector is a three-phase connector, the ring member can be formed using an iron material. In the case where only one cable is connected, a current flows. Since a magnetic field is generated, it is necessary to use stainless steel or the like.

As described above, when the cable protection tube for accommodating the cable is connected to the cable side housing arranged on the cable side of the L-shaped connector, the inner threaded portion of the ring member serving as a connection portion between the two members. By providing a sealing means inside the cable protection tube that is screwed into the connector, it is possible to prevent moisture or the like from flowing between the inside of the cable protection tube and the L-shaped connector. Seal member 90 as the sealing means
Have three holes 93 to 93b as shown in FIGS.
Can be provided so that the cable can be inserted and fixed in each hole. The seal member 90 is inserted into the inner surface of the distal end fixing portion of the cable protection tube to fix and hold the end of the cable and perform sealing. 91 and a main body 9 to be inserted into the distal end fixing portion
2 are integrally formed. The sealing member can be made of a relatively flexible material such as rubber or plastic. The slit 9 is used to hold the cable through the sealing member.
4 to 94b are provided corresponding to the holes 93 to 93b, respectively.

The example shown in FIG. 15 shows a case in which the seal member 95 is configured to correspond to a cable protection tube that holds one cable. Seal member 9 shown in FIG.
5 is a slit 9 for a hole 98 through which a cable passes.
9 is provided, and a flange 96 is provided at the distal end of the main body 97 so that the flange can be locked at the distal end of the distal end fixing portion. The sealing members 90, 9
5 is inserted into the distal end fixing portion, the main bodies 92 and 97
Silicon oil is applied to the outer periphery of the seal member, and the portions of the seal member divided through the slits are reduced in accordance with the compressive force in accordance with the compressive force applied to the seal member. . Therefore, when the seal member is inserted into the distal end fixing portion of the cable protection tube in a state where the cable is held in the hole of the seal member, the space between the internal space of the cable protection tube and the internal space of the housing of the L-shaped connector is formed. It is possible to shut off by a seal member, and it is possible to prevent moisture or the like from flowing between the two members.

[0027]

The connector cable protection member fixing device of the present invention is constructed as described above.
When the cable protection tube is connected to the cable side housing of the mold connector, the ring member is attached to the ring groove provided in the cable side housing in a non-rotatable state, so that the tip of the cable protection tube is When connecting the fixing portion, the connecting operation can be easily performed.
In order to fix and hold the ring member with respect to the ring groove, any locking and holding means can be used. In such a case, the housing member constituting the cable-side housing can be constituted by one mold, and the manufacturing cost of the cable-side housing can be reduced. Then, in a state where a ring member configured separately from the cable side housing is combined,
The cable protection tube can be easily connected to the cable side housing, and the connection between the L-shaped connector and the cable can be securely fixed and held.

Further, when the sealing means is arranged at the connection between the inside of the cable protection tube and the cable side housing,
For example, even when a cable laid under the floor is started up and power is supplied to a motor or the like, it is possible to prevent underground moisture or the like from entering the L-shaped connector, and prevent moisture from entering the power supply connection. In addition, when a sealing member is used, the operation of attaching to the distal end portion of the cable protection tube can be easily performed, no gap is formed around the cable, and the space between the cable protection tube and the L-shaped connector can be formed. The flow of air can be blocked.

[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 main body 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 sectional view of a cable-side housing of the present invention.

FIG. 7 is a front view of the cable side housing of FIG. 6;

FIG. 8 is an explanatory diagram of a state in which a cable protection tube is connected to a cable-side housing.

FIG. 9 is an explanatory view showing a configuration of a ring member of the present invention.

FIG. 10 is an explanatory view of a second embodiment of the ring member of the present invention.

FIG. 11 is an explanatory view of a third embodiment of the ring member of the present invention.

FIG. 12 is a perspective view of a fourth embodiment of the ring member of the present invention.

FIG. 13 is a front view of the seal member of the present invention.

FIG. 14 is a side view of the seal member of FIG.

FIG. 15 is an explanatory view of another embodiment of the seal member of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cable, 2 conductors, 5 Connection part frame, 10 L-shaped connector, 11 Main body housing, 14 Power receiving side member, 15 Protrusion member, 18
Cable side housing, 19 Groove for ring, 20
Insulation cylinder, 30 waterproof cylinder, 40 connection terminal rod member, 50 power receiving terminal member, 51 cylindrical member, 5
5 conductor, 60 receiving member member, 70 ring member, 71 internal thread portion, 72 protruding portion, 73 step portion, 74 flat portion, 75 step portion, 80 cable protection tube, 81 tip fixing portion, 82 screw portion, 84 protection tube , 90/95 sealing member,
94/99 slit.

────────────────────────────────────────────────── ─── Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/52-13/72 H02G 15/08 H02K 5/22

Claims (3)

(57) [Claims] An L-shaped connector is disposed at an end of a low-voltage cable, and an L-shaped connector is attached to a power receiving terminal member on the power receiving side so that power can be supplied to a power receiving device such as a motor. An apparatus for attaching to an L-shaped connector while being protected by a cable protection tube, wherein a separate cable-side housing is arranged on a cable side with respect to a main body housing for protecting an outer surface of the L-shaped connector, and an end of the cable-side housing A ring member for fixing the cable protection tube is disposed in the ring groove provided on the inner surface of the portion, and means for supporting the ring member in a non-rotatable manner is provided for the ring groove of the cable side housing. Cable protection member fixing device for a connector. 2. A recess is disposed in a ring groove provided on an inner surface of a distal end portion of the cable side housing of the L-shaped connector, and a protrusion is formed around a ring member disposed corresponding to the ring groove. The connector cable protection member fixing device according to claim 1, wherein the ring member is provided so as not to rotate with respect to the ring groove portion by engaging the concave and convex portions of both members. 3. A cable in a state in which a seal member is disposed inside a cable protection tube screwed into an inner thread portion provided on an inner peripheral surface of the ring member, and the cable passes through a hole provided in the seal member. 2. The cable protection member fixing device for a connector according to claim 1, wherein a means for sealing between the inside of the protection tube and the cable side housing is provided.