JPH08222328A - Housing fitting structure to apparatus wall - Google Patents

Abstract

PURPOSE: To strengthen the holding force at the time when a connector is attached to an apparatus wall of an automotive body, a panel, an electric connection box, and other appliances. CONSTITUTION: An insertion frame 3 is formed in an external circumferential wall 2 of a housing A made of a synthetic resin, a blacket 7 is projected in an apparatus wall of an automotive body, a panel, an electric connection box, and other appliances, and a locking projection part formed in a bridging part 4' of the insertion frame 3 and a locking hole 6 of the blacket 7 are mutually joined by inserting the blacket 7 in the frame, so that the housing A is attached to the apparatus wall. The bridging part 4' is formed as a flexible and elastic wall which energizes the blacket 7 to the outer circumferential side by being bent toward the outer circumferential wall 2 side of the housing A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a housing of an electric connector on a wall of a vehicle body, a panel, an electric junction box or other equipment.

[0002]

2. Description of the Related Art As a mounting structure of this type, there is one shown in FIGS. 7 to 9 (Japanese Patent Laid-Open No. 5-290918).
A is a synthetic resin female connector housing, B is a synthetic resin terminal locking tool, and C is a male terminal. The male terminal C is housed and locked in the terminal housing chamber 1 of the housing A, and the terminal locking tool is shown. The terminal B can be prevented from being pulled out twice.

The housing A has a channel-shaped insertion frame 3 on a lower outer peripheral wall 2, and a locking projection 5 for locking is provided on a bridging portion 4 of the housing A. On the other hand, the housing A is locked from a side wall of an electric junction box (not shown). A bracket 7 having a hole 6 is projectingly provided.
Therefore, as shown in FIG. 9, when the bracket 7 is inserted into the insertion frame 3 with the terminal locking tool B locked to the rear portion of the housing A, the locking projection 5 and the locking hole 6 are engaged with each other. The housing A is locked and fixed to the container wall.

In the above construction, polypropylene (PP) is generally used as the material of the housing A in view of its workability, mechanical strength, insulation and cost.
However, when the housing material is PP, when the force in the F ₁ direction in FIG. 9 is applied, the bracket 7 easily slips out of the insertion frame 3. The reason is that the strength (rigidity) of PP is not sufficient, the lock portion is easily bent, and the engagement between the engagement projection 5 and the engagement hole 6 is easily released. As a countermeasure against this, in FIG. 10, it is conceivable to increase the height H ₁ of the insertion frame 3 to increase the thickness H ₂ of the bridging portion 4, but these values are usually standardized, and H ₁ Cannot be increased to increase the thickness of H ₂ .

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a housing mounting structure capable of strengthening the holding force of the insertion frame with respect to the bracket without changing the material and standard dimensions of the housing. To provide.

[0006]

In order to achieve the above-mentioned object, the present invention, as set forth in claim 1, provides a housing made of a synthetic resin with an insertion frame on an outer peripheral wall thereof, a vehicle body, a panel,
A bracket is projected on the wall of the electric junction box and other equipment,
In the mounting structure in which the bracket is inserted into the insertion frame and the housing is locked to the device wall by the engagement of the lock portion formed on the bridge portion of the insertion frame and the lock receiving portion formed on the bracket, The bridging portion of the frame is formed as a flexible elastic wall which is curved toward the outer peripheral wall of the housing and biases the bracket toward the outer peripheral side.
The lock portion comprises a support piece projecting from the central portion of the flexible elastic wall and a locking projection provided on its free end (claim 2), and the support piece faces toward the insertion side of the bracket. It is preferable to project it (Claim 3).

[0007]

According to the invention of claim 1, the flexible elastic wall (bridge portion) constantly applies a force to the outer peripheral wall of the housing to act on the bracket inserted into the insertion frame, so that the holding force is strengthened. Also, when a force is applied to the housing in the pulling direction, the flexible elastic wall is lifted, but since it is originally curved to the outer peripheral wall side, pulling out requires a repulsive force to bend in the opposite direction. Since much stronger force is required than before, a strong holding force can be obtained without changing the standard size. Further, when the lock portion for the bracket of the flexible elastic wall is provided via the support piece as described in claims 2 and 3, the degree of freedom in design is increased and, at the same time, the bridge is bridged when an external force acts in the pull-out direction. It is possible to prevent the flexible elastic wall that is the part from being directly damaged.

[0008]

1 is a perspective view of a female connector housing having a mounting structure of the present invention, and FIG. 2 is a plan view of the insertion frame portion of FIG.
3 is a view in the Y direction of FIG. 2, and FIG. 4 is a sectional view taken along the line aa of FIG. 1 to 4, a channel-shaped insertion frame 3 is provided on the lower outer peripheral wall 2 of the female connector housing A, and a bracket 7 having a locking hole 6 is inserted and locked as in the conventional case. . In the present invention, the bridging portion 4'of the insertion frame 3 is formed as a flexible elastic wall curved toward the outer peripheral wall 2 side, and this flexible elastic wall 4'is similarly a locking projection as a lock portion for the bracket 7. 5 are provided.

The height H ₁ ′ of the insert frame 3 from the lower outer peripheral wall 2 and the thickness H ₂ ′ of the base end portions 4 a on both sides of the flexible elastic wall 4 ′ are the same as those of the conventional example shown in FIG. 10. , And has the same standard dimensions as above. The flexible elastic wall 4 ′ is formed in a bridge shape from the side frames 3 a on both sides of the insertion frame 3, and a supporting piece 4 b is provided at the center thereof so as to project in a T-shape toward the insertion side of the bracket 7, and its free end is formed. A locking projection 5 is provided on the part. A bracket 7 is attached to the tip of the locking projection 5.
Is formed with a tapered insertion guide slope 5a.

In the above structure, as shown in FIG. 5, when the bracket 7 is inserted into the insertion frame 3, the tip of the bracket 7 comes into contact with the insertion guide surface 5a of the locking projection 5 and bends toward the outer peripheral wall 2 side. The elastic wall 4'is pushed in so as to be pushed outward. Then, at the same time that the locking hole 6 passes through the locking projection 5, the flexible elastic wall 4 ′ elastically returns, the locking projection 5 enters the locking hole 6, and the housing A is locked by the bracket 7.

As shown in FIG. 6, the bracket 7 is always elastically pressed toward the outer peripheral wall 2 by the flexible elastic wall 4'and is sandwiched between the bracket 7 and the outer peripheral wall 2. Further, when a force in the pull-out direction acts on the bracket 7, unless the elastic wall 4'is pushed and spread against the elastic force of the flexible elastic wall 4 ', the engagement between the locking projection 5 and the locking hole 6 will be reduced. It will not be released and will not come off easily. When the bracket 7 is inserted into the insertion frame 3, the locking projection 5 is provided via the support piece 4b. Therefore, in the case of this embodiment, the support piece 4b and the flexible elastic wall 4'in this order. Since it is displaced in the direction away from the outer peripheral wall 2, the insertion work is smoothly performed.

In the above, the example in which the locking projection 5 as a lock portion for the bracket 7 of the flexible elastic wall 4'is provided via the support piece 4b has been described, but the locking projection 5 may be a bridging portion. It may be directly provided on the inner surface of the flexible elastic wall 4 '. Further, the housing A is not limited to a housing for an electric connector, and is similarly applied to a housing or case made of synthetic resin in various electric devices such as a fuse box and an electric connection box.

[0013]

As described above, according to the present invention, the insert frame is provided on the outer peripheral wall of the housing made of synthetic resin, and the bracket is projected on the wall of the vehicle body, the panel, the electric junction box and other devices. A mounting structure in which a bracket is inserted into the insertion frame and a housing is locked to a container wall by engagement of a lock portion formed on a bridge portion of the insertion frame and a lock receiving portion formed on the bracket. Since the bridging part is formed as a flexible elastic wall that curves toward the outer peripheral wall side of the housing and urges the bracket toward the outer peripheral side, the holding force for the bracket can be maintained without changing the conventional standard size. It is possible to provide a mounting structure that is reinforced and does not come off easily.

[Brief description of drawings]

FIG. 1 is a perspective view of a female connector housing showing an embodiment of the present invention.

FIG. 2 is a plan view of the insertion frame portion of FIG.

FIG. 3 is a view in the Y direction of FIG.

FIG. 4 is a sectional view taken along line aa of FIG.

5 is a perspective view of a main part of the insertion frame and the bracket of FIG. 1. FIG.

FIG. 6 is a transverse cross-sectional view of the insertion frame and the bracket in a locked state.

FIG. 7 is a perspective view showing a conventional example of a connector.

8 is a perspective view of the female connector housing A of FIG. 7 viewed from the bottom side.

9 is a cross-sectional view showing a mounting lock state of the connector of FIG.

10 is a front view of a portion of the insertion frame of the connector of FIG.

[Explanation of symbols]

 A female connector housing 2 lower outer peripheral wall 3 insertion frame 4'flexible elastic wall (bridge portion) 5 locking protrusion 6 locking hole 7 bracket

[Procedure amendment]

[Submission date] December 26, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

In the above construction, polypropylene (PP) is generally used as the material of the housing A in view of its workability, mechanical strength, insulation and cost.
However, when the housing material is PP, when a force in the F direction is applied in FIG. 9, the bracket 7 is inserted into the insertion frame 3
It is easy to fall out of The reason is that the strength (rigidity) of PP is not sufficient, the lock portion easily bends, and the locking projection 5
This is because the engagement between the locking hole 6 and the locking hole 6 is easily released. As a countermeasure against this, in FIG. 10, it is conceivable to increase the height H ₁ of the insertion frame 3 and increase the thickness H ₂ of the bridging portion 4.
Usually, these values are standardized, and H ₁ is increased to
The thickness of ₂ cannot be increased.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

Claims (3)

[Claims] 1. An insertion frame is provided on an outer peripheral wall of a housing made of a synthetic resin, and a bracket is projected on an equipment wall of a vehicle body, a panel, an electric junction box or other equipment, and the bracket is inserted and attached to the insertion frame. In a mounting structure in which the housing is locked to the device wall by the engagement of the lock portion formed on the bridge portion of the insertion frame and the lock receiving portion formed on the bracket, the bridge portion of the insertion frame is on the outer peripheral wall side of the housing. A mounting structure of a housing to a container wall, which is formed as a flexible elastic wall which is curved to urge the bracket toward the outer peripheral side. 2. The container according to claim 1, wherein the lock portion includes a support piece projecting from a central portion of the flexible elastic wall and a locking projection provided at a free end portion of the support piece. Mounting structure of the housing on the wall. 3. The structure for mounting a housing on a device wall according to claim 2, wherein the support piece is provided so as to project toward the insertion side of the bracket.