JP4918410B2 - Connector with protector - Google Patents

Description

  The present invention relates to a connector with a protector in which a protector that guides in a predetermined direction while protecting an electric wire drawn out from a connector housing at a rear portion of the connector housing.

  As this type of connector with a protector, for example, the connector described in Patent Document 1 is known.

  FIGS. 7 and 8 show the structure of the connector with the protector described in the same document, FIG. 7 shows a state before the protector is attached to the rear part of the connector housing, and FIG. 8 shows the state after the protector is attached to the rear part of the connector housing. Each state before the protector is closed is shown.

  In the connector with the protector, the electric wire W drawn from the rear surface of the connector housing 110 is crossed with the pulling direction (rear direction) at the rear portion of the connector housing 110 (left direction as viewed from the front side of the connector in the drawing). A protector 130 that is bent and guided is attached. The connector housing 110 and the protector 130 are provided with a locking means for locking both, and an engaging claw 112 as a locking means is provided at the rear center of the connector housing 110. An elastic engagement protrusion 138 is provided as a locking means that engages with the engagement claw 112.

  A lock arm 113 for locking with the housing of the mating connector is provided at the center of the upper surface of the connector housing 110. The lock arm 113 can release the lock with the mating connector housing by pushing down the operation part exposed on the upper surface of the connector housing 110 from above.

  The protector 130 includes a base member 131, a cover member 132, and a hinge 133 that couples the base member 131. The base member 131 and the cover member 132 are shown in FIG. By turning the cover member 132 in the direction of the arrow F in the middle, it can be in a closed state. The base member 131 and the cover member 132 are provided with engaging portions 23, 24, and 25 that lock the members 131 and 132 in the closed state.

  Further, the protector 130 is provided with an electric wire passage 150 for guiding a plurality of electric wires W drawn from the rear surface of the connector housing 110 while bending.

  By the way, in this connector with a protector, since there is no means for protecting the lock arm 113 provided on the upper surface of the connector housing 110, for example, during transportation, other members interfere with the lock arm 113, so that the lock arm 113 is locked. There is a possibility that the arm 113 may be damaged or deformed.

On the other hand, for example, Patent Document 2 discloses an example in which a protective cover is attached to the rear portion of the connector and the lock arm is protected by this cover. In this case, the arm protection wall provided on the cover is made of a soft synthetic resin so that the lock arm can be operated with the cover attached, or a jig insertion portion for release operation is provided on the cover.
JP 2004-288545 A JP-A-10-32037

  By the way, as described in Patent Document 2 above, even if the lock arm is protected by the cover, if the arm protection wall provided on the cover is made of a soft synthetic resin, it interferes with other members during transportation. In this case, an excessive external force may be applied to the lock arm. Moreover, when the jig insertion part is provided in the cover, it is troublesome because the release operation must be performed with the jig.

  In consideration of the above circumstances, the present invention can safely protect the lock arm from interference with other members such as during transportation, and perform the unlocking operation from the connector locked state with a finger as usual. It is an object of the present invention to provide a connector with a protector that can be used.

According to the first aspect of the present invention, a protector that guides in a predetermined direction while protecting an electric wire drawn from the rear surface of the connector housing is attached to a rear portion of the connector housing having a lock arm for locking with the mating connector, The protector is provided with a bridge-shaped protection beam that covers the upper portion of the lock arm and protects the lock arm from interference with other members when the protector is attached to the rear portion of the connector housing, and the protection beam is provided with the lock the operation of the arm to the unlocking direction Te protector connector with odor which is arranged to be pressed down by a finger, the locking arm is provided on the upper surface of the connector housing rear end as a free end which is the operating unit At the same time, the protection beam is raised at both the left and right ends where it rises from the upper surface of the protector. A wall and a beam wall that connects between the upper ends of the rising walls at the left and right ends, and a notch portion is provided at the rear edge of the beam wall so that the operation unit can be pushed down with a finger. On the other hand, the connector housing is provided with engaging claws on both the left and right sides, the protector is provided with engaging projections on both the left and right sides, and the protective beam is provided on the left and right engaging projections. It is comprised so that it may connect .

The invention of claim 2 is the connector with protector according to claim 1 , wherein the beam wall is provided at a position higher than the topmost part of the connector housing.

  According to the first aspect of the present invention, since the protector beam is provided on the protector so as to cover the upper part of the lock arm of the connector housing, the lock arm may be damaged or deformed by interference with other members during transportation, for example. Can be prevented. Further, since the lock arm is covered with the protective beam, it is possible to prevent the lock arm from being inadvertently pressed and released in the locked state with the mating connector. In addition, the entire surface of the operation part of the lock arm is not covered with the protective beam, but a part of the operation part of the lock arm is exposed so that it can be pressed with a finger. The unlocking operation with the connector can be freely performed with a finger.

In particular, the lock arm can be operated to the release position by depressing the operation portion of the lock arm that is looking out from the cutout portion of the protective beam. In this case, since the operation beam of the lock arm can be pressed with a finger by providing a notch in the operation beam, as much range as possible of the lock arm can be covered with the protective beam. Interference between the other members and the lock arm can be effectively prevented, and the protection performance of the lock arm can be exhibited.

According to the second aspect of the present invention, since the beam wall of the protective beam is provided at a position higher than the topmost part of the connector housing, the protective beam can exhibit a function of protecting not only the lock arm but also the entire connector housing. It becomes like this.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is an exploded perspective view of a connector with a protector according to an embodiment, FIG. 2 is a front view showing the structure of the protector in an open state, FIG. 3 is a perspective view of the connector with a protector in an assembled state, and FIG. 5 is a plan view, and FIG. 6 is a cross-sectional view taken along arrow VI-VI in FIG.

  This connector with a protector is used in a place with high water resistance such as a lower part of an engine of an automobile, and includes a combination of the connector main body 10 and the protector 30.

  The connector main body 10 is configured by inserting a terminal 20 attached to the tip of the electric wire W from the rear side into each of a plurality of cavities 12 formed in a resin-made connector housing 11 to be accommodated. A substantially cylindrical waterproof rubber 21 is attached to the outer periphery of the terminal portion of the electric wire W, and the waterproof rubber 21 is fitted in the vicinity of the rear entrance in each cavity 12 so that the cavity 12 can be seen from the rear. Water entry is blocked.

  In the center of the upper surface of the connector housing 11, a lock arm 13 for locking with the housing of the mating connector is provided, and the operation portion 13a exposed on the upper surface of the connector housing 11 of the lock arm 13 is pushed down from above. Thus, the lock with the mating connector housing can be released. The lock arm 13 has a front end as a fixed end and a rear end as a free end, and the free end serves as an operation portion 13a.

  The protector 30 is made of a resin molded product, and includes a base member 31, a cover member 32, and a thin hinge 33 that connects these members. The base member 31 and the cover member 32 are closed by rotating the cover member 32 in the direction of arrow A in FIG. 1 from the open state (the state shown in FIGS. 1 and 2) in which the inner surfaces of the base member 31 and the cover member 32 are opened. Can be made. The base member 31 and the cover member 32 are provided with engaging portions 34, 35, 36, 44, 45, 46 for locking the members 31, 32 in the closed state.

  This connector with a protector has a wire W drawn from the rear surface of the connector housing 11 at the rear part of the connector housing 11 constituting the connector main body 10 in a direction intersecting the drawing direction (rear direction) (the front side of the connector in the figure). A protector 30 that is bent and guided in the left direction as viewed from the side is mounted, and the connector housing 11 and the protector 30 are provided with locking means 42 for locking both.

  In this case, the lock means 42 is provided at the line symmetric position on both the left and right sides of the center side of the connector housing 11 with respect to the bending direction side of the electric wire W, that is, on the opposite side, that is, on the connector housing 11 side. Is provided with an engaging claw 14 as a locking means, and on the protector 30 side, an engaging projection 41 as a locking means for engaging with the engaging claw 14 is provided.

  Further, the protector 30 is brought into contact with the rear end surface 11a of the connector housing 11 when an external force in the direction of arrow C in FIG. An overhanging protrusion 61 is provided to reduce the stress load on the means 42.

  A connector mounting portion 40 for mounting on the rear portion of the connector housing 11 is provided around the engaging protrusion 41 of the base member 31 of the protector 30, and the connector mounting portion 40 is fitted to the rear portion of the connector housing 11. By doing so, the outer side of the rear surface of the connector housing 11 can be covered almost completely.

In addition, a bridge-shaped protective beam 48 is provided on the upper side of the base member 31 of the protector 30 so as to extend from side to side. That is, the bridge-shaped protection beam 48 is configured to connect the engagement protrusions 41 on the left and right sides of the base member 31. This protective beam 48 covers the space above the operation portion 13a of the lock arm 13 of the connector housing 11 when the protector 30 is properly attached to the rear portion of the connector housing 11, thereby preventing the lock arm from interfering with other members. 13 is configured by a rising wall 48a at both left and right ends rising from the upper surface of the protector 30, and a beam wall 48b connecting between the upper ends of the rising walls 48a at both left and right ends.

  The protection beam 48 is provided so that the operation portion 13a of the lock arm 13 can be pushed down with a finger in the unlocking direction while protecting the lock arm 13. That is, a notch portion 48c is provided at the rear end edge of the beam wall 48b so that the operation portion 13a of the lock arm 13 can be pushed down with a finger. Further, the beam wall 48b of the protection beam 48 is provided at a position higher than the topmost part 11T of the connector housing 11, as shown in FIG.

  Further, inside the protector 30, an electric wire passage 50 is provided for guiding the plurality of electric wires W drawn from the rear surface of the connector housing 11 while bending.

  The electric wire passage 50 is provided in the base member 31, a first passage portion 51 for routing the electric wire W along the direction of drawing out the electric wire from the connector housing 11 at a position below the connector mounting portion 40, and the base member 31, a second passage portion 52 that bends and wires the electric wire W in a direction substantially perpendicular to the first passage portion 51 (lower side in FIG. 2), and both the base member 31 and the cover member 32. The third passage portion 53 is provided and bent and wired in the direction substantially perpendicular to the second passage portion 52 (left side in FIG. 2).

  As described above, the third passage portion 53 is formed by both the base member 31 and the cover member 32, and the corrugated tube 70 is provided on the inner surface of each member 31, 32 on the outlet side of the third passage portion 53. Concave and convex portions 56 that fit into the outer peripheral shape are provided.

  Next, the assembly work of the connector body 10 and the work of assembling the protector 30 to the assembled connector body 10 will be described.

  When assembling, first, as shown in FIG. 1, waterproof rubber 21 is attached to a plurality of electric wires W, terminals 20 are crimped and connected to the terminals of the electric wires W, and the plurality of electric wires W connected to the terminals 20 are connected. The corrugated tube 70 is attached to the outer periphery of the bundle.

  Next, the terminals 20 connected to the terminals of the plurality of electric wires W are inserted into the cavities 12 from the rear of the connector housing 11 and fixed. Thereafter, a retainer or the like is attached to complete the assembly of the connector main body 10.

  Next, the connector mounting portion 40 of the protector 30 is fitted to the rear portion of the connector housing 11. At the time of this fitting, the plurality of electric wires W drawn from the connector main body 10 are routed in the first passage portion 51, the second passage portion 52, and the third passage portion 53 of the base member 31. Specifically, the electric wire W drawn out from the connector main body 10 is routed along the electric wire passage 50 by bending the electric wire W at two locations in a substantially right angle direction.

  When the protector 30 is completely fitted into the connector housing 11, the engagement protrusion 41 as the lock means 42 and the engagement claw 14 are engaged, and the protector 30 is locked to the connector body 10 as shown in FIG. 3. The

  Thereafter, a portion of the corrugated tube 70 is aligned and fitted to the concavo-convex portion 56 of the third passage portion 53 of the base member 31, and then the cover member 32 is rotated in the direction of arrow A in FIG. 32 and the base member 31 are set in an assembled state. When the base member 31 and the cover member 32 are completely assembled, the three locking means 34, 35, 36, 44, 45, 46 are engaged, and the base member 31 and the cover member 32 are thereby locked. The One end of the corrugated tube 70 is held by the protector 30 when the protector 30 is closed.

  As described above, the protector 30 and the corrugated tube 70 can be integrally attached to the connector main body 10. And the electric wire W pulled out from the connector main body 10 can be protected by the protector 30 in a state of being routed in the electric wire passage 50 of the protector 30.

  In this protector-equipped connector, the electric wires W drawn from the connector main body 10 are arranged at two locations, that is, a boundary portion between the first passage portion 51 and the second passage portion 52 and a boundary portion between the second passage portion 52 and the third passage portion 53. Since it is routed in the electric wire passage 50 in a state bent at a right angle, the tensile force can be absorbed by the resistance generated at the bent portion of the electric wire W when the tensile force acts on the electric wire W. . Therefore, it is possible to prevent the external force from acting on the terminals 20 in the connector housing 11 as much as possible.

  Further, since the protective beam 48 is provided on the protector 30 so as to cover the upper portion of the lock arm 13 of the connector housing 11, the lock arm 13 may be damaged or deformed by interference with other members during transportation, for example. Can be prevented. Further, since the lock arm 13 is covered with the protective beam 48, it is possible to prevent the lock arm 13 from being inadvertently pressed and released in the locked state with the mating connector. In addition, the entire surface of the operation portion 13a of the lock arm 13 is not covered with the protective beam 48, but a part of the operation portion 13a of the lock arm 13 is exposed from the cutout portion 48c so that it can be pressed with a finger. Without using a jig or the like, the unlocking operation with the mating connector can be freely performed with a finger.

  In this embodiment, the protective beam 48 is provided with a notch 48c so that the operation portion 13a of the lock arm 13 can be pressed with a finger. 48, it is possible to effectively prevent other members and the lock arm 13 from interfering with each other, and the protection performance of the lock arm 13 can be exhibited.

  In this embodiment, since the beam wall 48b of the protection beam 48 is provided at a position higher than the topmost portion 11T of the connector housing 11, the protection beam 48 protects not only the lock arm 13 but also the entire connector housing 11. Will be able to demonstrate its function.

It is a disassembled perspective view of the connector with a protector of embodiment of this invention. It is a front view which shows the state which the protector in the same embodiment opened. It is a perspective view which shows the assembly state of the connector with a protector of the embodiment. It is a front view of the assembly state. It is a top view of the assembly state. It is VI-VI arrow sectional drawing of FIG. It is a disassembled perspective view of the conventional connector with a protector. It is the perspective view seen from another direction of the connector with the protector.

Explanation of symbols

11 Connector housing 11T Topmost part 13 Lock arm 13a Operation part
14 engaging claw 30 protector
41 Engaging projection 48 Protective beam 48a Rising wall 48b Beam wall 48c Notch W Wire

Claims (2)

A protector that guides in a predetermined direction while protecting the electric wire drawn from the rear surface of the connector housing is attached to the rear portion of the connector housing having a lock arm for locking with the mating connector ,
The protector is provided with a bridge-shaped protective beam that covers the upper portion of the lock arm and protects the lock arm from interference with other members when mounted on the rear portion of the connector housing, and the protective beam is In the connector with protector arranged so that the operation part of the lock arm can be pushed down with the finger in the unlocking direction ,
The lock arm is provided on the upper surface of the connector housing with the rear end as a free end that is the operation portion, and the protection beam rises from the upper and lower ends of the protector and rises at the left and right ends. A beam wall connecting between the upper ends of the walls, and a notch portion is provided at the rear end edge of the beam wall so that the operation portion can be pushed down with a finger. Engaging claws are provided on both sides, the protector is provided with engaging projections that engage with the engaging claws on both the left and right sides, and the protective beam is configured to connect the engaging projections on both the left and right sides. A connector with a protector. It is a connector with a protector of Claim 1, Comprising:
The connector with a protector , wherein the beam wall is provided at a position higher than an uppermost portion of the connector housing .

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