JP2007042349A - Protector for connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylindrical protector easy to add force on its grip and reinforced by ribs. <P>SOLUTION: A plurality of ribs 7a are formed around the cylindrical protector 7 along its length direction, with their cross section in T-shape having a plane on its top. Here, after connecting terminals are connected to wires 2a, all the connecting terminals are inserted into a connector 3a, which is then insertion-coupled with a connector 3b processed likewise. Next, after the cylindrical protector 7 is pulled toward the connector 3b side to couple the protector 7 with the connector 3a, a grommet 10 is pushed into a gap between an insulation coating 9 and a rear part of the cylindrical protector 7 to make the inside of the cylindrical protector 7 of a waterproof structure. In moving the cylindrical protector 7, it is grabbed by the ribs 7a so that there is no fear of slipping nor giving pain to a holder, and the holder can add enough force on it. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connector protector for protecting an electric wire connected to a connector.

  When a cable in which a large number of electric wires are bundled is connected by a connector, a cylindrical protector may be coupled to the connector in order to protect the cable.

  This cylindrical protector needs a certain level of strength. If the thickness is increased and the strength is increased, the weight increases. Therefore, it is conceivable to form ribs on the surface to reinforce.

  However, since this cylindrical protector often grips and applies force, the normal convex ribs are slippery and the hand hurts, and the force may not be applied.

  An object of the present invention is to provide a protector for a connector which is easily reinforced by a rib when a force is applied.

  The technical feature of the protector for connectors according to the present invention for achieving the above-mentioned object is a cylindrical protector that is connected to the rear portion of the connector and protects the electric wires wired to the connector, and includes a plurality of protectors in the outer longitudinal direction. The reinforcing rib is formed and the cross-sectional shape of the reinforcing rib is substantially T-shaped with a flat portion at the top.

  According to the protector for a connector according to the present invention, the strength is increased and the gripper is easily gripped, and operations such as connection to the connector are facilitated.

  The present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 is an exploded perspective view of the embodiment, and FIG. 2 is a longitudinal sectional view. Many electric wires 2a and 2b in the cables 1a and 1b are connected by a pair of connectors 3a and 3b made of synthetic resin. Connection terminals are accommodated in the connectors 3a and 3b, and electric wires 2a and 2b are connected to these connection terminals. When the connectors 3a and 3b are fitted, both connection terminals are electrically connected. It is like that.

  In addition, between the connectors 3a and 3b, water is prevented from entering from the joint by a synthetic rubber seal member (not shown), and further, the gap between the connectors 3a and 3b is sealed between the connectors 3a and 3b. Since the members are similarly sealed, water does not enter the connectors 3a and 3b from the front or rear of the connectors 3a and 3b.

  In the present embodiment, the number of the electric wires 2a and 2b is large, and a large force is required for fitting and releasing between the connectors 3a and 3b. Therefore, for example, the connector 3a is provided with a rotating lever 5 having a cam groove 4, The pin 6 provided on the mating connector 3b is locked in the cam groove 4, and the connectors 3a and 3b can be engaged and disengaged without requiring a large force by the lever action of both of them by the rotation of the rotation lever 5. I am doing so.

  A cylindrical protector 7 made of synthetic resin or metal is connected to the rear of the connector 3a. A similar cylindrical protector 7 is also arranged behind the connector 3b and has a substantially symmetrical structure with the connector 3a. However, description of the structure of the rear portion of the connector 3b will be omitted.

A plurality of ribs 7a are formed around the cylindrical protector 7 along the longitudinal direction, and the cross-sectional shape of these ribs 7a is a T-shape having a flat surface at the top as shown in FIG.
The connector 3 a side in the cylindrical protector 7 is formed in a shape that covers and fits the rear portion of the connector 3 a, and a synthetic rubber seal member 8 is interposed between the connector 3 a and the cylindrical protector 7. Ingress of water from the front of is prevented.

  Between the cylindrical protector 7 connected to the connectors 3a and 3b and the insulation coating 9 of the cables 1a and 1b, from the rear side of the cylindrical protector 7, it is a cylindrical shape with a flange made of synthetic rubber and has a corrugated cross section on the inner and outer surfaces. The formed grommet 10 is inserted, and the inside of the cylindrical protector 7 has a waterproof structure. Further, a cable fixture 11 made of synthetic resin is mounted and fixed on the insulating coating 9 with respect to the cables 1a and 1b.

  The fixing tool 11 is attached to a sleeve 12 having a slit whose outer surface is a tapered surface with respect to the insulating coating 9, and the inner diameter of the sleeve 12 is reduced by using a fastening tool 13 and a nut 14. It is supposed to be fixed to. The inner surface of the fastener 13 is a tapered surface that circumscribes the tapered surface of the sleeve 12, and an outer screw 13a is engraved on the outer periphery thereof. The nut 14 covers the fastening tool 13, and the inner screw 14 a is screwed with the outer screw 13 a of the fastening tool 13.

  Two pins 13 b protrude from the connector 3 a side of the fastener 13, and these pins 13 b are respectively inserted into two arc grooves 15 a of the polygonal ring 15 inserted between the fastener 13 and the grommet 10. It is inserted. The polygonal portion 15b of the outer shape of the polygonal ring 15 is a polygon such as a hexagon.

  Further, a bushing 16 made of synthetic rubber and having a tapered portion at the rear portion, a metal sleeve 17 that contacts the tapered portion of the bushing 16 in an annular shape, and a nut 18 are inserted on the insulating coating 9.

  Further, a protective resin 19 divided into two parts made of synthetic resin or metal is attached on the connectors 3a and 3b, the cylindrical protector 7 and the cable fixture 11 and fixed by nuts 18 at both ends. And the recessed part 19a of the same shape into which the polygon part 15b of the polygon ring 15 fits is formed inside the protection cylinder 19. As shown in FIG.

  At the time of assembly, a metal nut 18, a sleeve 17 and a bushing 16 are attached to the insulating coating 9. Subsequently, the cable fixing tool 11 is inserted in the order of the nut 14, the sleeve 12, the fastening tool 13, and the polygonal ring 15, and finally the grommet 10 and the cylindrical protector 7 are inserted.

  Here, after connecting the connection terminals to the electric wire 2a, all the connection terminals are inserted into the connector 3a, and the connector 3a is fitted with the connector 3b processed in the same manner. Subsequently, after pulling the cylindrical protector 7 toward the connector 3 and connecting the cylindrical protector 7 to the connector 3 a, the grommet 10 is pushed into the gap between the insulating coating 9 and the rear portion of the cylindrical protector 7. The interior is waterproof.

  When the cylindrical protector 7 is moved, a sufficient force can be applied without causing slippage and feeling pain by gripping the top from above the flat rib 7a.

  Subsequently, when the cable fixing tool 11 is fixed at a predetermined position on the insulating coating 9 and then the protective cylinder 19 is attached to the periphery, the polygonal recess 19 a provided in the protective cylinder 19 becomes the polygon of the polygonal ring 15. Even if the phase of the portion 15b does not match, that is, even if the angle is shifted, the polygonal ring 15 can be rotated by a certain angle by the arc groove 15a. The ring 15 naturally rotates and fits into the recess 19 a of the protective cylinder 19. Subsequently, the nut 18 is screwed into the threaded portion 19b of the protective cylinder 19, and the two-piece protective cylinder 19 is integrated as shown in FIG.

  As a result, the cable 1a is fixed to the protective cylinder 19, and even if the cable 1a is twisted and expanded or contracted, these forces are received by the protective cylinder 19 via the bushing 16. Furthermore, since the insulating coating 9 is fixed to the protective cylinder 19 via the polygonal ring 15 of the cable fixture 11, the protection of the connectors 3a and 3b by the protective cylinder 19 is ensured. The twist corresponding to the length of the arc groove 15a of the polygonal ring 15 when the protective cylinder 19 is attached is transmitted to the connector 3a side, but these twists are absorbed by the twist of the electric wire 2a. These actions are the same on the connector 3b side.

It is a disassembled perspective view of an Example. It is a longitudinal cross-sectional view. It is a cross-sectional view of a cylindrical protector. It is a perspective view of an assembly state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Cable 2a, 2b Electric wire 3a, 3b Connector 7 Tubular protector 7a Rib 8 Seal member 9 Insulation coating 10 Grommet 16 Bushing 18 Nut 19 Protection cylinder

Claims (3)

  A cylindrical protector that is connected to the rear part of the connector and protects the electric wires wired to the connector, wherein a plurality of reinforcing ribs are formed in the outer longitudinal direction, and the cross-sectional shape of the reinforcing ribs is the top part with the flat part A connector protector characterized by having a substantially T-shape.   The connector protector according to claim 1, wherein a seal member is interposed at a joint portion with the connector.   The connector protector according to claim 2, wherein a grommet is interposed between the cable and the cable for waterproofing.

Images