JP3090011B2 - Connector with wire cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector with an electric wire cover.

[0002]

2. Description of the Related Art In a conventional connector with a wire cover, a cover is formed in a cap shape so as to cover a wire lead-out surface of a housing, and a wire lead-out port for bundling and leading wires in a predetermined direction is formed. I was In such a configuration, the cover is attached to the wire outlet surface of the housing while pulling out the wires coming out of the wire outlet surface of the housing from the wire outlet of the cover.

[0003]

In the above-described conventional connector with an electric wire cover, since the electric wire only penetrates the cover, when an operator pulls the electric wire when removing the connector, a force is applied to the terminal fitting. As a result, there is a problem that the terminal fitting may come off. The present invention
An object of the present invention is to provide a connector with an electric wire cover that can prevent a terminal fitting from slipping out in view of the above problem.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, a cylindrical terminal fitting accommodating chamber capable of accommodating a terminal fitting crimped to an end of an electric wire is provided in an axial direction of a housing. a connector formed along, will be fitted with a cover for covering at intervals of the terminal receiving chambers corresponds to approximately the diameter of the electric wire so as to wrap around the peripheral wall of the housing from the back to open, the On the cover
Same as the peripheral wall facing piece facing the peripheral wall of the housing
Engage with the housing and lift the piece facing the same peripheral wall.
This is a configuration in which an engagement structure for preventing slippage is formed . According to a second aspect of the present invention, in the connector with the wire cover according to the first aspect, the engaging structure includes
It is slidable on both sides of the wall facing piece and the mounting direction.
It is and if possible guide structure.

[0005] Further, according to a third aspect of the present invention, an electric wire
Cylindrical terminal that can accommodate terminal fittings crimped to the tip
A connector in which the metal housing is formed along the axial direction of the housing
From the back where the terminal fitting housing chamber is open.
The above-mentioned electric wire is wound around the peripheral wall of the housing.
Do not attach a cover that covers at a distance corresponding to the diameter.
Facing the peripheral wall of the housing in the cover.
Between the peripheral wall facing piece and the peripheral wall of the housing.
It is configured to have an electric wire gripping structure that is inserted and fixed .

[0006]

According to the first aspect of the present invention, when the terminal fitting crimped and connected to the tip of the electric wire is accommodated in the terminal fitting accommodating chamber of the connector, the electric wire becomes:
It is drawn out of the terminal fitting accommodating chamber of the housing along the axial direction of the housing. In this state, when the cover is attached from the rear surface of the housing, the cover wraps around from the rear surface of the housing to the peripheral wall, so that the electric wire led out from the rear surface of the housing is folded along the peripheral wall surface of the housing. The wire is almost U
The wire is folded back into a U shape, and the folded wire is drawn back to the back side of the connector. As a result, when the electric wire is pulled to the rear side, the electric wire sufficiently withstands the pulling force at the twice folded portion, and the electric wire cannot be pulled out.

Further , when the electric wire is pulled, the peripheral wall facing piece which faces the peripheral wall of the housing tends to rise, but when the cover is mounted, the peripheral wall facing piece and the housing are engaged with each other by an engagement structure. , Which prevents lifting. Further, according to claim 2 configured as described above .
In the present invention , when the cover is mounted, both side edges of the peripheral wall facing piece slide and engage with the guide structure.

Further, according to claim 3 configured as described above ,
In this invention , when the cover is mounted on the housing, the electric wire gripping structure formed on the peripheral wall facing piece and the peripheral wall of the housing bites and fixes the electric wire. This allows
When the wire is pulled, the wire gripping structure generally bears the pulling force.

[0009]

As described above, according to the present invention, the electric wire can be substantially double-cut by just covering the cover and folding the electric wire from the back of the housing along the peripheral wall into a U-shape.
This makes it possible to provide a connector with an electric wire cover that has a simple structure, can bear the pulling force of the electric wire without transmitting it to the terminal fitting, and can prevent the electric wire from coming off.

Also, since the cover is prevented from being lifted, the pulling force of the electric wire can be prevented from being transmitted to the terminal fitting. Further, according to the second aspect of the present invention , the cover is engaged with the guide structure while sliding, so that the mounting can be guided and the workability can be improved while preventing the floating of the electric wire. further,
According to the third aspect of the present invention , not only the wire is folded but also the wire is positively engaged and fixed, so that the pulling force of the wire can be prevented from being transmitted to the terminal fitting.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a connector with an electric wire cover according to an embodiment of the present invention.
In the figure, a two-pole type connector housing 10 is shown.
Is a hood portion 20 whose front side is engageable with a mating connector.
The rear side is a terminal accommodating section 30 for accommodating terminal fittings. The terminal accommodating section 30 is provided with two cylindrical terminal fitting accommodating chambers 31 capable of accommodating terminal fittings. It is formed.

In the present embodiment, the present invention is applied to a so-called two-pole type connector, but the number of electrodes is not particularly limited and can be changed as appropriate. Further, the hood portion 20 is formed on the front side, but it is sufficient that the hood portion 20 includes at least the terminal accommodating portion 30 in which the cylindrical terminal fitting accommodating chamber 31 is formed. It is possible. Of course, it may be one that holds either the male terminal or the female terminal, and the size is not limited to one type, and may be a hybrid type that holds terminal fittings of a plurality of sizes. .

The terminal accommodating portion 30 protrudes rearward from the hood portion 20, but is generally formed in a thin box shape having a substantially rectangular cross section, and has an axial direction of the terminal accommodating portion 30 on the rear side. Terminal fitting accommodation room 3 formed along
1, 31 are open side by side. Also, the terminal accommodating section 30
A guide groove 33 formed along the front-rear direction is formed in the middle of the upper surface in the width direction, and wedge-shaped engagement protrusions 34, 34 protruding toward the front side are formed on both side surfaces. .

The cover 40 is formed in a cap shape which can be attached to the terminal accommodating portion 30 from the back side, and is fixed by sandwiching the upper and lower surfaces of the terminal accommodating portion 30 and the left and right peripheral surfaces. The cover 40 has a base 41 facing the back surface of the terminal accommodating section 30, and
1 and arms 42, 42 extending in parallel along both side walls of the terminal accommodating portion 30. The arms 42, 42 have engaging holes into which the engaging protrusions 34 can enter and engage. 42
a, 42a are formed. Thereby, when the cover 40 is approached from the rear side of the terminal accommodating portion 30, the arms 42, 42 advance along the side wall of the cover 40, and when they come into contact with the engagement projections 34, they get over the engagement projections. The mating projections 34, 34 enter and engage with the engagement holes 42a, 42a. As described above, since the engagement projections 34 are wedge-shaped, they cannot be easily disengaged when they are engaged with the arms 42.

The cover 40 has a lower surface cover 44 extending forward from the lower end of the base 41 covering the rear surface of the terminal accommodating portion 30 along the lower wall surface of the terminal accommodating portion 30. The lower surface cover 44 swells downward in the middle in the width direction, and has both ends in the width direction curved upward, and is in contact with the lower surface of the terminal housing portion 30 at both ends. The base portion 41 and the lower surface cover 44 cover the lower surface from the back surface of the terminal accommodating portion 30, but face each other with a gap therebetween, and the gap is crimp-connected to a terminal fitting (not shown) mounted on the terminal accommodating portion 30. The diameter of the wire 50 matches the diameter of the wire 50. Therefore, in the present embodiment, the lower cover 44 constitutes a piece facing the peripheral wall, and the cover 40 is attached in a state where the electric wire 50 is led out from the terminal accommodating portion 30, whereby the state shown in FIGS. As shown, the base 41 and the lower surface cover 44 are
Is bent so as to be folded further forward from the lower surface side. In addition, since the electric wire 50 is pulled out to the rear of the connector 10, as shown in FIGS. 3 and 4, the electric wire 50 is bent rearward again and twice folded 180 degrees. Note that the cover 40 has the terminal housing 30
Also provided is an upper surface cover 45 extending forward along the upper surface of the lower surface cover 45.
Thus, the terminal accommodating portion 30 is sandwiched from above and below. Further, a guide projection 45a facing the guide groove 33 is formed on the upper surface cover 45,
The guide projection 45a enters the guide groove 33 and slides.

In the present embodiment, the arms 42, 42, the upper cover 45, and the lower cover 44 extend from the base 41 so as to sandwich the terminal accommodating portion 30 from the upper and lower surfaces in both width directions. What is necessary is just to be mounted so that it may cover the back of terminal storage part 30 from which 50 is led out, and a part of peripheral wall surface. Therefore, in the case of the present embodiment, it is only necessary to cover the rear surface and the lower surface of the terminal accommodating portion 30 so that the electric wire 50 can be pulled out toward the side surface to cover the rear surface and the side surface. Then, the electric wire 50 may be drawn out to the upper surface to cover the rear surface and the upper surface.

By the way, in the present embodiment, the lower surface cover 44 is connected only to the base 41, and if the electric wire 50 is pulled strongly, it may be lifted downward as shown in FIG. . On the other hand, as shown in FIG. 7, both side edges 44a, 44a of the lower surface cover 44 are pulled out in the horizontal direction, and the both sides 44a, 44a are slidable in the receiving groove 3 on the lower surface of the terminal accommodating portion 30.
5, 35 are formed. The receiving grooves 35, 35 are formed so as to protrude downward on both sides of the lower surface of the terminal accommodating portion 30, are formed in grooves that open to face each other, and also open on the back side.

Therefore, as shown in FIG. 8, when the cover 40 is approached from the rear side, the two arms 42, 42 begin to slide on the side surfaces of the terminal accommodating portion 30, and at the same time, both side edges of the lower surface cover 44. The portions 44a, 44a are the receiving grooves 35, 3
5 and slides in the receiving grooves 35, 35 to move forward. That is, in the present embodiment,
Both side edge portions 44a, 44a can slide and advance in the receiving grooves 35, 35, and both use the engagement structure and the guide structure. When the cover 40 is mounted, the side edges 44a, 44a are in the receiving grooves 35, 35.
Since the wire 50 is also supported from below, it does not float even when the electric wire 50 is pulled.

In this embodiment, both side edges 44a, 44a of the lower cover 44 are supported from both sides so as to enter the receiving grooves 35 on both sides, thereby preventing the lower cover 44 from rising downward. However, it is sufficient that the front end portion of the lower cover 44 is not attached to the terminal receiving portion 3 in a state where the cover 40 is completely mounted.
It can be appropriately deformed, for example, by engaging with a projection formed on the front lower surface of the zero. However, by slidably supporting both sides, the cover 40 does not get caught during mounting work, and workability is improved. Of course, the receiving grooves 35, 35 and both side edges 44a, 44a also
It is only necessary to guide so as to be slidable, and other engagement structures can be easily adopted.

In the above-described embodiment, the electric wire 50 is simply folded back into a “Z” shape. For example, as shown in FIG.
In addition, an upper tooth portion 36 is formed on the lower surface of the terminal accommodating portion 30 so as to face the lower tooth portion 44b, and is fixed by an electric wire gripping structure in which the electric wire 50 is bitten between the both. You may do it. In this case, the electric wire 50 can be held more firmly, and the tensile force can be prevented from being transmitted to the terminal fitting. In the case of the present embodiment, the teeth are formed on both sides, but it is not always necessary to form them on both sides as long as they are biting, and one may be simply left as a corner, etc. Deformable.

Next, the operation of this embodiment having the above configuration will be described. When the cover 40 is approached from the back side of the terminal accommodating portion 30 in a state where the electric wire 50 is led out from the terminal accommodating portion 30, the electric wire 50 is folded back further from the lower surface side by the base 41 and the lower surface cover 44. And bend it. Also, since the routing direction of the electric wire 50 is backward, the electric wire 50 has a “Z” as shown in FIGS. 4 and 10.
It will be folded 180 degrees twice in a letter shape. In this state, when the electric wire 50 is pulled to the rear side, the electric wire 50 is pressed against the leading edge of the lower cover 44. The electric wire 50 is bent at the front end portion, and a part of the force for pulling backward is pressed against the front end portion and borne, but the remaining force is used to further pull out the electric wire 50. Works. However, the force that tries to pull the electric wire 50 then pushes the electric wire 50 against the back surface corner of the lower surface of the terminal accommodating portion 30, and the remaining force is almost entirely borne by this portion. Therefore, there is no way to try to pull out the terminal fittings contained in the terminal fitting storage chamber 31. At this time, as shown in FIGS. 7 to 11, both side edges 44 a of the lower surface cover 44 are
In the case of engaging and supporting the receiving grooves 35, 35, it is possible to prevent the downward lifting, and to more effectively bear the pulling force.

As described above, the rear end of the connector housing 10 is the terminal accommodating portion 30 from which the electric wire 50 is led out. When the cover 40 is attached from the back side of the terminal accommodating portion 30, the terminal accommodating portion 30 is The base 50 and the lower surface cover 44 cover from the rear side to the lower surface side, and the electric wire 50 led out from the rear surface of the terminal accommodating portion 30 is bent forward from the rear surface and further at the front end of the lower surface cover 44. Since it is folded back and supported as a "Z" shape,
Even if the electric wire 50 is pulled backward, it is supported by the bent portion twice, so that the terminal fitting cannot be pulled out.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connector with an electric wire cover according to an embodiment of the present invention.

FIG. 2 is a side view showing an assembling process of the connector with an electric wire cover.

FIG. 3 is a perspective view showing an assembled state of the connector with an electric wire cover.

FIG. 4 is a side view showing an assembled state of the connector with an electric wire cover.

FIG. 5 is a rear view showing an assembled state of the connector with an electric wire cover.

FIG. 6 is a side view showing a state where the electric wire is strongly pulled by the connector with the electric wire cover.

FIG. 7 is a perspective view of a connector with an electric wire cover according to a modification.

FIG. 8 is a side view showing an assembling process of the connector with an electric wire cover.

FIG. 9 is a perspective view showing an assembled state of the connector with an electric wire cover.

FIG. 10 is a side view showing an assembled state of the connector with an electric wire cover.

FIG. 11 is a rear view showing the assembled state of the connector with an electric wire cover.

FIG. 12 is a side view of a connector with an electric wire cover according to a modification.

FIG. 13 is a side view showing an assembled state of the connector with an electric wire cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector housing 30 ... Terminal accommodating part 31 ... Terminal fitting accommodating chamber 33 ... Guide groove 35 ... Receiving groove 36 ... Upper tooth part 40 ... Cover 41 ... Base part 44 ... Lower surface cover 44a ... Both side edge parts 44b ... Lower tooth part 50 ... Electrical wire

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/58

Claims (3)

(57) [Claims] 1. A connector in which a cylindrical terminal fitting accommodating chamber capable of accommodating a terminal fitting crimp-connected to an end of an electric wire is formed along an axial direction of a housing, and a back surface on which the terminal fitting accommodating chamber is opened. to go around the peripheral wall of the housing generally made by mounting a cover for covering at an interval corresponding to the wire diameter from facing the peripheral wall of the housing in the cover peripheral
The wall facing piece and the housing are engaged with each other and the peripheral wall facing
A connector with an electric wire cover, wherein an engagement structure for preventing lifting of a piece is formed . 2. The connector with an electric wire cover according to claim 1, wherein the engagement structure is provided on both sides of the peripheral wall facing piece.
Guide slidably engageable with rim and mounting direction
A connector with an electric wire cover characterized by having a structure . 3. A terminal fitting crimp-connected to an end of an electric wire.
The cylindrical terminal fitting accommodating chamber that can accommodate
And a connector formed along with the housing from the rear surface where the terminal fitting accommodating chamber is opened.
While wrapping around the surrounding wall and roughly corresponding to the above wire diameter
A cover for covering the housing with a gap therebetween, and a cover facing the peripheral wall of the housing in the cover.
Electric wire is caught between the wall facing piece and the peripheral wall of the housing
A connector with an electric wire cover characterized by having an electric wire gripping structure for fixing the electric wire .