JP2013080671A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector in which an outer diameter of the connector can be easily reduced and durability over a long period of time can be easily secured.SOLUTION: A connector comprises: a body 3 into which a cable 1 is inserted; and a cap 4 which is fixed to the body 3 in such a state as to surround the body 3 and the cable 1, wherein a coming-off prevention tool 5 which prevents the cable 1 from coming off from the body 3 by engaging with the cap 4 and packings 6 which seal a gap between the cable 1 and the body 3 are respectively mounted to positions mutually different in a longitudinal direction of the cable.

Description

  The present invention includes a body into which a cable is inserted, a cap that is fixed to the body so as to surround the body and the cable, a retaining member that prevents the cable from coming out of the body, and the cable. The present invention relates to a connector having a packing for sealing a gap with the body.

Conventionally, the connector has a cap that is screwed to the outer peripheral side of the body and a packing that also functions as a retainer.
In other words, by reducing the diameter of the cable insertion part of the body with a cap screwed into the body, the packing attached between the cable and the body is compressed and deformed inside the cap, and the cable of the packing and the frictional force against the body are used. The gap between the cable and the body is sealed (for example, see Patent Document 1).

JP 2011-18463 A

In the conventional connector, the outer diameter of the connector is likely to increase because the packing that also functions as a retainer is compressed and deformed inside the cap.
Also, in order to secure a large frictional force that can prevent the cable from coming out of the body, the cap and the body are subjected to large stress in order to hold the packing between the cable and the body in a state of being strongly compressed and deformed. There is a risk of the cap and body being easily damaged at an early stage due to scratches on the cap and body and deterioration of the material.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector that can easily reduce the outer diameter of the connector and can ensure long-term durability.

  A first characteristic configuration of a connector according to the present invention includes a body into which a cable is inserted, and a cap that is fixed to the body so as to surround the body and the cable. The stopper for preventing the body from coming off and the packing for sealing the gap between the cable and the body are mounted at different positions in the longitudinal direction of the cable.

In the connector of this configuration, the retainer and the packing are mounted at different positions in the longitudinal direction of the cable.
For this reason, it is easy to reduce the outer diameter of the connector by dispersing the function of the retainer and the function of the packing in the cable longitudinal direction.
In addition, the prevention of the cable from coming out of the body is performed by locking the retainer to the cap.
Therefore, it is possible to prevent the cable from coming out of the body by locking the stopper and the cap while sealing the gap between the cable and the body without strongly compressing and deforming the packing. Stress to be reduced.
Therefore, with the connector having this configuration, the cap and the body are not easily damaged, and it is easy to ensure durability over a long period of time.

  The second characteristic configuration of the present invention is characterized in that the retainer includes a convex piece fixed to the cable in a posture rising from the outer peripheral surface of the cable on the upper side of the cable insertion direction than the packing, the convex piece, The body and the cap are located between opposing surfaces facing each other in the cable longitudinal direction.

  With this configuration, it is possible to prevent the cable from coming out of the body by the contact between the convex piece and the cap, and it is possible to prevent excessive push-in to the cable body from the contact between the convex piece and the body. This makes it easy to assemble the cable properly to the body.

  According to a third feature of the present invention, the convex piece rises in the cable radial direction from the outer peripheral surface of the cable along the cable circumferential direction, and a distal end portion projects from the distal end side of the base portion toward the body side. It is in the point equipped with.

When the convex piece is formed of a metal plate at a low cost, for example, when the cable is pulled strongly in the direction of coming out of the body, the convex piece is easily deformed so as to fall toward the body side in contact with the cap.
For this reason, if the entire convex piece is formed in a flat plate shape along the cable circumferential direction, the convex piece is deformed so as to follow the outer peripheral surface of the cable, the contact with the cap is released, and the cable comes out of the body. May be easier.
With this configuration, even if the cable is strongly pulled in the direction of pulling out from the body, the pulling out can be effectively prevented by the contact between the convex piece and the cap.

That is, when the cable is pulled strongly in the direction of pulling out from the body, the base of the convex piece that rises in the cable radial direction along the cable circumferential direction from the cable outer circumferential surface falls down toward the body side in contact with the cap. Try to deform so.
At this time, the tip portion protruding from the tip end side of the base portion toward the body side is brought into contact with the body, and the falling of the base portion toward the body side can be restricted.
Therefore, with the connector of this configuration, even if the convex piece is formed of a metal plate at a low cost, the contact between the convex piece and the cap is difficult to be released, and the cable can be effectively prevented from coming out. it can.

  The fourth feature of the present invention is a convex piece locking portion in which the width of the tip portion along the cable circumferential direction is formed wider than the base portion, and the tip portion can be locked from the inner side in the cable radial direction. Is formed on the cap.

With this configuration, when the cable is pulled strongly in the pulling-out direction from the body and, as a result, the base portion tries to deform so as to fall toward the body side in contact with the cap, the protruding piece at the tip portion By the locking from the inner side in the cable radial direction by the locking portion, it is possible to regulate the falling of the base portion toward the body.
Therefore, with the connector of this configuration, the contact between the convex piece and the cap is more difficult to be released, and the cable can be more effectively prevented from coming off.

  According to a fifth characteristic configuration of the present invention, the convex piece is inserted into a concave portion formed in the cap.

  If it is this structure, the relative rotation of a cap and a cable can be prevented by the contact in the cable circumferential direction of a convex piece and a recessed part.

  According to a sixth characteristic configuration of the present invention, the body includes a protruding piece formed to protrude from the body toward the upper side in the cable insertion direction, and the protruding piece enters the concave portion so as to face the protruding piece. It is in a certain point.

In this configuration, the projecting piece formed on the body is inserted into the recess formed in the cap, so that the cap and the cable and the body are relatively connected with each other in the cable circumferential direction between the projecting piece and the recess. Rotation can be prevented.
Further, when the cable is inserted into the body, the cap can be attached so that the convex piece and the protruding piece enter the concave portion by aligning the convex piece and the protruding piece.

  A seventh characteristic configuration of the present invention is that a cap locking portion for locking the cap and the body in the cable longitudinal direction is provided.

With this configuration, the cap can be locked and fixed to the body without screwing the cap into the body, so stress is applied to the cap and the body while the cap is fixed to the body. It is difficult to damage the cap and body.
Further, since the cap can be fixed to the body without providing a screwing structure, it is easier to reduce the outer diameter of the connector.

It is a disassembled perspective view of a socket (connector). It is a side view of a socket. (A) is a longitudinal cross-sectional view of a socket, (b) is an expanded sectional view of the principal part. It is a front view which shows the inside of a cap. It is a perspective view which shows the assembly | attachment method to the socket of a cable. It is a disassembled perspective view which shows the socket (connector) in 2nd Embodiment. It is a front view which shows the entering state to the recessed part of the convex piece in 2nd Embodiment. The socket in 2nd Embodiment is shown, (a) is a longitudinal cross-sectional view of a socket, (b) is an expanded sectional view of the principal part.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 to 5 show a connector A according to the present invention for connecting a cable 1 for external connection of a solar cell module (not shown).
As the connector A according to the present invention, a plug inserted into a socket (not shown) is illustrated, but a socket into which a plug is inserted may be used.

As shown in FIGS. 1 to 3, the plug (connector) A is a resin body 3 into which the cable 1 is inserted together with the contacts 2, and a resin fixed to the body 3 so as to surround the body 3 and the cable 1. And a cap 4 made of metal.
The cable 1 is formed of a sheet metal stopper 5 that locks with the cap 4 to prevent the cable 1 from coming out of the body 3, and an elastic material such as rubber that seals the gap between the cable 1 and the body 3. The sealed packing 6 is mounted at different positions in the longitudinal direction of the cable 1.

The body 3 is formed in a cylindrical shape including a large-diameter portion 3a into which the proximal end side of the cable 1 and the contact 2 is inserted, and a small-diameter portion 3b into which the distal end side of the contact 2 is inserted.
A pair of projecting pieces 7 projecting toward the upper side of the cable insertion direction is extended from the upper end of the large diameter portion 3a in the cable insertion direction.
A pair of locking pieces 8 each having a claw for locking and fixing to the body of a socket (not shown) into which the plug A is inserted is extended at the lower end of the large-diameter portion 3a in the cable insertion direction.

The contact 2 is a metal plate having conductivity, and is formed into a cylindrical shape in which a plug-side contact (not shown) can be fitted.
The cap 4 is formed in a cylindrical shape having a large-diameter portion 4 a that is externally fitted to the large-diameter portion 3 a of the body 3 and a small-diameter portion 4 b that is externally fitted to the cable 1.

As shown in FIG. 3, the retainer 5 and the packing 6 are individually attached to the cable 1 at different positions in the cable longitudinal direction.
The packing 6 is formed in a shape including a cylindrical portion 6a that is externally fitted to the inner covering layer 1b of the cable 1 and an annular flange portion 6b that covers the end surface of the inner covering layer 1b. It is fitted on the end.

A plurality of annular ridges 6c are formed on the outer peripheral surface of the cylindrical portion 6a.
The ridge 6c is compressed and deformed by pushing the packing 6 fitted around the cable 1 into the large-diameter portion 3a of the body 3, and the gap between the cable 1 and the body 3 is sealed in a watertight manner.

  The retainer 5 includes a clamper 5a that is caulked and fixed to the outer peripheral surface (outer covering layer 1c) of the cable 1, and a pair of convex pieces 5b that are formed in a substantially rectangular plate shape by bending a part of the clamper 5a. ing.

  The pair of convex pieces 5b are fixed to the cable 1 by caulking and fixing the clamper 5a to the cable 1 so that the plate surface extends along the cable circumferential direction on the upper side of the cable 6 in the cable insertion direction. The cable 1 is fixed to the cable 1 with a phase difference of 180 degrees around the cable axis.

A pair of bulging portions 11 that partially expands radially outward are formed at the end of the large-diameter portion 4a in the cap 4, and a pair of bulging portions 11 that are long in the circumferential direction of the cable. Through-holes 11a are formed.
On the outer peripheral side of the large diameter portion 3 a in the body 3, a convex surface portion 18 that enters the inner space of the bulging portion 11 and a pair of locking claws 12 that are long in the cable circumferential direction are formed in the same phase as the pair of protruding pieces 7. It is.

Then, the cap 18 that locks the cap 4 and the body 3 together in the cable longitudinal direction by inserting the convex portion 18 into each of the inner space of the bulging portion 11 and inserting the locking claw 12 into each of the through holes 11a. A locking portion 13 is provided.
Relative rotation between the cap 4 and the body 3 is reliably prevented by entering the inner space of the bulging portion 11 of the convex surface portion 18 and entering the through hole 11a of the locking claw 12.

On the inner surface side of the step portion 4c of the large diameter portion 4a and the small diameter portion 4b of the cap 4, a pair of concave portions 9 into which the convex pieces 5b enter is formed in the same phase as the bulging portion 11, as shown in FIG. is there.
Then, as shown in FIG. 3, the projecting piece 5b enters the recess 9 and the projecting piece 7 enters the recess 9 so as to face the projecting piece 5b. Is inserted between the opposing faces 10 facing each other in the longitudinal direction of the cable, so that the retainer 5 and the cap 4 are locked with each other in the longitudinal direction of the cable, thereby preventing the cable 1 from coming off. .

  Since the protruding piece 7 is inserted into the concave portion 9 so as to face the convex piece 5b, the protruding piece 7 prevents the protruding piece 5b made of sheet metal from coming out of the concave portion 9, and the cap 4 and the cable 1 are Rotation can be prevented more reliably.

A method for assembling the cable 1 to the plug A will be described.
As shown in FIG. 1, the cable 1 is inserted in the cap 4 in advance, the outer covering layer 1c on the distal end side is removed and the packing 6 is fitted, and the clamper 5a is attached to the outer covering layer 1c of the cable 1. The contact 2 is fixed to the core wire 1a by soldering or caulking, for example.

  Next, the claw 2a formed on the contact 2 in the state where the phases of the pair of protruding pieces 5b and the pair of protruding pieces 7 are made to coincide with each other is a step portion between the large diameter portion 3a and the small diameter portion 3b of the body 3 The contact 2 is inserted into the body 3 as shown in FIGS. 3 and 5 until it contacts the ring-shaped spacer 15 attached to 3c.

The contact 2 is provided with a pair of retaining pieces 2b projecting laterally toward the upper side in the insertion direction into the body 3 with a phase difference of 180 degrees around the cable axis.
The contact 2 is prevented from coming off from the body 3 by the locking of the retaining piece 2 b and the spacer 15.

Then, by pushing the cap 4 so that the front end portion of the bulging portion 11 in the pushing direction gets over the locking claw 12 by elastic deformation and enters the locking claw 12 into each of the through holes 11a, FIG. As shown in FIG. 5, the protruding piece 5b enters the recess 10 of the cap 4 and enters the space 10 between the protruding piece 7 and the cap 4, and the assembly of the cable 1 to the tag A is completed.
Thus, since the body 3 and the cap 4 are assembled not by a screw type but by an insertion method, the thickness of each member can be reduced and the whole can be made compact.

[Second Embodiment]
6 to 8 show another embodiment of the present invention.
In the present embodiment, the pair of convex pieces 5b caulking and fixing the clamper 5a to the cable 1, so that the plate-like base portion 16 rises in the cable radial direction from the outer peripheral surface of the cable along the cable circumferential direction, and the tip of the base portion 16 And a plate-like distal end portion 17 projecting from the side toward the body 3 side.

A width along the cable circumferential direction of the distal end portion 17 is formed wider than the base portion 16, and projecting portions 17 a that project laterally laterally from the base portion 16 are formed on both sides of the distal end portion 17 in the cable circumferential direction. It is.
Further, the concave portion 9 is formed with a width that allows the distal end portion 17 to enter the entire width, and on the inner side thereof, a protruding piece that can lock the protruding portion 17a of the distal end portion 17 from the inner side in the cable radial direction. A locking portion 20 is formed.

As shown in FIG. 7, the convex piece locking portion 20 is provided with a pair of ribs 19 facing each other in the cable circumferential direction along both side edges of the opening portion facing the cable 1 side of the concave portion 9. The cross-sectional shape is formed in a T shape.
The pair of ribs 19 are formed along the circumferential direction of the cable with an interval through which the base portion 16 can enter, and the left and right protruding portions 17a are respectively formed between the rib 19 and the inner surface 9a of the recess 9 along the cable longitudinal direction. It is provided so as to be able to be locked from the inner side in the cable radial direction.

Then, as shown in FIG. 6, the protruding piece 5b enters the recessed portion 9 so that the tip end portion 17 faces the protruding piece 7, and the protruding portion 17a is formed between the rib 19 and the inner surface 9a as shown in FIG. The protruding piece 7 is inserted into the recess 9 so as to face the distal end portion 17, and as shown in FIG. 8, between the opposing faces 10 of the protruding piece 7 and the cap 4 in the cable longitudinal direction. By inserting the convex piece 5b into the cable 1, the cable stopper 1 and the cap 4 are locked with each other in the cable longitudinal direction to prevent the cable 1 from coming off.
Other configurations are the same as those of the first embodiment.

[Other Embodiments]
1. The connector according to the present invention may connect a cable to a terminal box for a solar cell module, for example.
2. In the connector according to the present invention, the cap may be screwed and fixed to the body.

DESCRIPTION OF SYMBOLS 1 Cable 3 Body 4 Cap 5 Detachment tool 5b Convex piece 6 Packing 7 Protruding piece 9 Concave part 10 Between opposing surfaces 13 Cap latching part 16 Base part 17 Tip part 20 Convex piece latching part

Claims (7)

A body into which the cable is inserted;
A cap fixed to the body in a state of surrounding the body and the cable;
A stopper that is locked with the cap and prevents the cable from coming out of the body, and a packing that seals a gap between the cable and the body are mounted at different positions in the longitudinal direction of the cable. Connector. The stopper is provided with a convex piece fixed to the cable in a posture rising from the outer peripheral surface of the cable on the upper side of the cable insertion direction than the packing,
The connector according to claim 1, wherein the convex piece is inserted between opposing surfaces in which the body and the cap face each other in the cable longitudinal direction.   The said convex piece is provided with the base part which stands | starts up in the cable radial direction along the cable circumferential direction from the cable outer peripheral surface, and the front-end | tip part which protrudes toward the said body side from the front end side of the said base part. connector. A width along the cable circumferential direction of the tip is formed wider than the base,
The connector according to claim 3, wherein a convex piece locking portion capable of locking the tip portion from the inner side in the cable radial direction is formed on the cap.   The connector according to claim 2, wherein the convex piece is inserted into a concave portion formed in the cap. The body includes a protruding piece formed to protrude from the body toward the upper side of the cable insertion direction,
The connector according to claim 5, wherein the protruding piece is inserted into the concave portion so as to face the convex piece.   The connector according to claim 1, further comprising a cap locking portion that locks the cap and the body in the cable longitudinal direction.

Images