JP7393302B2 - connector - Google Patents

Description

The present invention relates to a connector.

As a device connector that is attached to the case of an in-vehicle device, it consists of a synthetic resin inner housing formed by embedding multiple terminals by insert molding, and an aluminum die-cast outer housing that is assembled to the outer peripheral surface of the inner housing. Some have a housing configured (for example, see Patent Document 1).

This connector is fixed to the case by fastening the fixing portion of the outer housing with bolts. At this time, the annular face seal provided on the inner housing is compressed between the edge of the attachment hole in the case and the flange of the inner housing, thereby stopping water between the inner housing and the case.

Japanese Patent Application Publication No. 2016-139542

By the way, in the above connector, if there is distortion in the fixed part of the outer housing formed by the mold, the annular face seal will not be compressed uniformly in the circumferential direction when the connector is attached to the case, and the gap between the outer housing and the case will be distorted. There is a concern that the sealing performance will deteriorate.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a connector that can obtain good sealing performance for an attached part.

In order to achieve the above-mentioned object, the connector according to the present invention is characterized by the following (1) to (3).
(1) A connector that is attached to an attached part having an attachment hole,
a first housing attached from one side of the attached part;
a second housing attached from the other side of the attached part;
Equipped with
The first housing includes:
a flange portion facing the edge of the mounting hole;
an annular packing provided on the flange portion and closely contacting an edge of the attachment hole in the attached portion to seal between the attached portion;
has
The second housing includes:
a locking portion that locks the first housing through the mounting hole;
a pressing flange portion provided in a circumferential direction and elastically deformed by being pressed by the attached portion while the locking portion locks the first housing;
has
The first housing is drawn toward the second housing by the elastic force of the elastically deformed pressing flange portion, so that the packing is pressed against the attached portion.
A connector characterized by:

(2) In the first housing, the flange portion is fastened to the attached portion.
The connector according to (1), characterized in that:

(3) The pressing flange portion is
a bulging portion that bulges out to the opposite side of the attached portion;
a flat pressing portion formed on the outer peripheral side of the bulging portion and abutting the attached portion;
has,
The connector according to (1) or (2), characterized in that:

According to the connector configured in (1) above, when the connector is attached to the attached part, the annular packing provided between the attached part and the flange part of the first housing is formed by the elastically deformed pressing flange. The first housing is drawn toward the second housing by the elastic force of the part, and is pressed against the attached part.
Thereby, for example, even if the flange portion is distorted during molding of the first housing, variations in the compressive force of the packing with respect to the attached portion can be alleviated. Therefore, the packing can be evenly brought into close contact with the attached part over the entire circumference, and the sealing performance for the attached part can be improved.

According to the connector having the configuration (2) above, when the flange portion is fastened to the attached portion, the packing is pressed against the attached portion by the fastening force. Thereby, the packing can be pressed against the attached part by the fastening force and the elastic force of the pressing flange portion, and the sealing performance against the attached part can be further improved.

According to the connector configured in (3) above, when the pressing flange portion is pressed against the attached portion by the locking portion of the second housing locking the first housing, the pressing flange portion The bulging portion that bulges out to the opposite side smoothly bends and deforms elastically, and the flat pressing portion is evenly pressed against the attached portion. Thereby, the elastic force of the pressing flange portion can be more evenly applied to the packing over the circumferential direction.

According to the present invention, it is possible to provide a connector that can obtain good sealing performance with respect to an attached part.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the mode for carrying out the invention (hereinafter referred to as "embodiment") described below with reference to the accompanying drawings. .

FIG. 1 is a perspective view of a connector according to this embodiment. FIG. 2 is a perspective view of the connector according to the present embodiment, viewed from the rear side. FIG. 3 is an exploded perspective view of the connector according to this embodiment. FIG. 4 is a sectional view taken along line AA in FIG. FIG. 5 is a diagram showing the outer housing, in which FIG. 5(a) is an exploded perspective view seen from the front side, and FIG. 5(b) is an exploded perspective view seen from the rear side. FIG. 6 is a perspective view of a first inner member and a second inner member that constitute the inner housing. FIG. 7 is a perspective view of the outer housing attached to the panel. FIG. 8 is a cross-sectional view corresponding to AA in FIG. 1 of the outer housing attached to the panel. FIG. 9 is a perspective view of the outer housing and the inner housing attached to the panel, viewed from the rear side. FIG. 10 is a cross-sectional view corresponding to AA in FIG. 1, showing a state in which the inner housing is being assembled to the outer housing. FIG. 11 is an enlarged view of part B in FIG. 4.

Specific embodiments of the present invention will be described below with reference to each figure.

FIG. 1 is a perspective view of a connector according to this embodiment. FIG. 2 is a perspective view of the connector according to the present embodiment, viewed from the rear side. FIG. 3 is an exploded perspective view of the connector according to this embodiment. FIG. 4 is a sectional view taken along line AA in FIG.

As shown in FIGS. 1 to 4, the connector 1 according to the present embodiment is attached to, for example, a panel (attached part) 3 that constitutes a housing of equipment mounted on a vehicle. The panel 3 has a mounting hole 5, and the connector 1 is attached to the panel 3 while being fitted into the mounting hole 5. A mating connector (not shown) is fitted into the connector 1 attached to the panel 3 from the front side. Thereby, the terminals housed in this connector 1 and the mating connector are electrically connected to each other.

The connector 1 includes an outer housing (first housing) 10 and an inner housing (second housing) 40. These outer housing 10 and inner housing 40 are each molded from synthetic resin. The outer housing 10 is attached to the attachment hole 5 from the front side of the panel 3, and the inner housing 40 is attached to the attachment hole 5 from the back side of the panel 3.

FIG. 5 is a diagram showing the outer housing, in which FIG. 5(a) is an exploded perspective view seen from the front side, and FIG. 5(b) is an exploded perspective view seen from the rear side.
As shown in FIGS. 5A and 5B, the outer housing 10 has a cylindrical portion 11 and a flange portion 12. The cylindrical portion 11 is formed into a rectangular tube shape that is rectangular in cross section. A pair of locking pawls 13 facing each other are formed on both sides of the inner peripheral portion of the rear portion of the cylindrical portion 11 .

The flange portion 12 is formed near the rear end of the cylindrical portion 11 . The flange portion 12 is formed in an annular shape and is integrally formed so as to protrude toward the outer circumference of the cylindrical portion 11 over the entire circumference. The flange portion 12 is provided with cylindrical collars 16 having bolt insertion holes 15 at positions on both sides of the cylindrical portion 11 . The collar 16 is made of metal, and is provided integrally with the flange portion 12 by, for example, insert molding.

The outer housing 10 has a packing mounting groove 21 at the rear thereof. The packing mounting groove 21 is formed on the side of the cylindrical part 11 in the flange part 12, and is formed along the entire circumference of the cylindrical part 11. A packing 23 is fitted into the packing mounting groove 21. The packing 23 is made of an elastic material such as rubber, and has an annular shape. A portion of the packing 23 protrudes from the rear surface of the flange portion 12 over the entire circumference while being fitted into the packing mounting groove 21 .

Further, a seal member 25 is attached to the outer housing 10 on the outer peripheral side of the cylindrical portion 11 . The sealing member 25 is made of an elastic material such as rubber, and has an annular shape. The sealing member 25 is fitted into the cylindrical portion 11 from the front side thereof, and attached to the base portion where the flange portion 12 is formed.

FIG. 6 is a perspective view of a first inner member and a second inner member that constitute the inner housing.
As shown in FIG. 6, the inner housing 40 includes a first inner member 41 and a second inner member 42.

The first inner member 41 has a fitting part 51 and a pressing flange part 52. The fitting portion 51 is formed into a rectangular shape when viewed in cross section. The fitting part 51 has an insertion part 56 in which a plurality of insertion holes 55 (see FIG. 4) are formed. In addition, the fitting portion 51 has a housing portion 57 formed from a space on the rear side of the insertion portion 56 . This housing portion 57 has openings 58 formed on both sides thereof. Furthermore, the fitting portion 51 has engaging portions 59 at upper and lower positions in the center portion in the width direction. A fitting guide plate 80 is formed on the distal end side of the fitting portion 51, and is inserted into the guide groove of the mating connector when mating with the mating connector.

The pressing flange portion 52 is formed at the rear end of the fitting portion 51. The pressing flange portion 52 is formed in an annular shape and is integrally formed so as to protrude toward the outer circumferential side of the fitting portion 51 over the entire circumference. The pressing flange portion 52 has a bulging portion 61 and a pressing portion 63. The bulging portion 61 and the pressing portion 63 are formed in order from the root side. In cross-sectional view, the bulging portion 61 bulges out rearward. The pressing portion 63 is formed into a flat plate shape and is disposed slightly forward of the base.

The second inner member 42 is formed into a box shape. A plurality of terminal accommodating chambers 65 are formed in the second inner member 42, and terminals (not shown) connected to electric wires (not shown) are inserted into these terminal accommodating chambers 65 from the rear side. be taken in and contained. The terminal accommodating chamber 65 has a lance 67 that projects inward (see FIG. 4), and the lance 67 locks the terminal inserted into the terminal accommodating chamber 65 to prevent it from coming out.

Locking arms (locking portions) 71 are formed on both side surfaces of the second inner member 42 . The locking arm 71 is formed into a cantilever shape with a front end side connected to both side surfaces of the second inner member 42 and extending rearward. The locking arm 71 has a guide surface 73 on its outer surface that gradually slopes outward toward the rear, which is the direction of extension.

The second inner member 42 is provided with an engagement arm 77 having an engagement claw 75 at the center in the width direction on the upper and lower surfaces. Further, the second inner member 42 is provided with operating portions 79 that project rearward and laterally at rear end portions on both sides thereof.

The second inner member 42 is fitted into the accommodating portion 57 of the fitting portion 51 of the first inner member 41 from the rear. When the second inner member 42 is fitted into the housing portion 57 of the first inner member 41, the engaging claw 75 of the engaging arm 77 of the second inner member 42 is engaged with the engaging portion 59 of the first inner member 41. Ru. Thereby, the second inner member 42 is assembled to the first inner member 41, and the inner housing 40 is constructed. In this state, the locking arms 71 provided on both sides of the second inner member 42 protrude from the openings 58 formed on both sides of the housing portion 57 of the first inner member 41.

Next, a case will be described in which the connector 1 is attached to the panel 3 of on-vehicle equipment.
FIG. 7 is a perspective view of the outer housing attached to the panel. FIG. 8 is a cross-sectional view corresponding to AA in FIG. 1 of the outer housing attached to the panel. FIG. 9 is a perspective view of the outer housing and the inner housing attached to the panel, viewed from the rear side. FIG. 10 is a cross-sectional view corresponding to AA in FIG. 1, showing a state in which the inner housing is being assembled to the outer housing. FIG. 11 is an enlarged view of part B in FIG. 4.

As shown in FIG. 7, the rear part of the outer housing 10 is fitted into the mounting hole 5 from the front side of the panel 3, and the flange portion 12 of the outer housing 10 is brought into contact with the panel 3. In this state, insert the bolt 9 into the bolt insertion hole 15 of the collar 16 of the flange portion 12, screw it into the screw hole 7 (see FIG. 3) formed in the panel 3, and fasten and fix the outer housing 10 to the panel 3. . Then, as shown in FIG. 8, the packing 23 is pressed against the surface of the panel 3 and brought into close contact with the surface of the panel 3 by the fastening force of the bolts 9 that fasten the flange portion 12 of the outer housing 10.

Next, as shown in FIG. 9, the inner housing 40 is inserted from the back side of the panel 3 toward the mounting hole 5 (in the direction of arrow C in FIG. 9). Then, as shown in FIG. 10, the distal end side of the inner housing 40 is inserted into the cylindrical part 11 of the outer housing 10 attached to the panel 3, and the inner housing 40 is further inserted into the second inner member 42 of the inner housing 40. The guide surface 73 of the locking arm 71 is brought into contact with the locking pawl 13 of the outer housing 10.

From this state, the inner housing 40 is pushed toward the outer housing 10 (in the direction of arrow D in FIG. 10). Then, the locking arm 71 is pressed by the locking claw 13 and is elastically deformed inward. When the inner housing 40 is completely pushed into the outer housing 10, the locking arm 71 passes over the locking claw 13, so that the locking arm 71, which was pressed and elastically deformed by the locking claw 13, returns to its original state. As a result, the locking claw 13 is locked to the locking arm 71, the inner housing 40 is assembled to the outer housing 10, and the connector 1 is attached to the panel 3 (see FIG. 4). In this state, the bulging portion 61 of the pressing flange portion 52 of the inner housing 40 is bent, and the pressing portion 63 is pressed against the panel 3.

When the connector 1 is attached to the panel 3 in this way, as shown in FIG. 11, the annular packing 23 provided between the panel 3 and the flange portion 12 of the outer housing 10 is It is pressed against the surface of the panel 3 by the fastening force F1 of the bolt 9 applied via the flange portion 12. Further, the packing 23 is compressed by the elastic force F2 of the pressing flange portion 52 of the inner housing 40 which is bent by being pressed against the panel 3. In other words, the outer housing 10 is pulled rearward by the elastic force F2 caused by the bending of the pressing flange portion 52 acting through the locking point between the locking arm 71 and the locking claw 13, and as a result, the packing 23 is moved toward the outer housing 10. is compressed by the flange portion 12 of.

When the mating connector is fitted to the connector 1 attached to the panel 3, the terminals housed in the connector 1 and the mating connector are electrically connected to each other. Furthermore, when the connector 1 and the mating connector are fitted together, the sealing member 25 attached to the outer housing 10 seals between the connector 1 and the mating connector.

As described above, according to the connector 1 according to the present embodiment, the annular packing 23 provided between the panel 3 and the flange portion 12 of the outer housing 10 when attached to the panel 3, The outer housing 10 is drawn toward the inner housing 40 by the elastic force F2 of the elastically deformed pressing flange portion 52, thereby being pressed against the panel 3.

Thereby, for example, even if distortion occurs in the flange portion 12 during molding of the outer housing 10, variations in the compressive force of the packing 23 against the panel 3 can be alleviated. Therefore, the packing 23 can be evenly brought into close contact with the panel 3 over the entire circumference, and the sealing performance against the panel 3 can be improved.

Moreover, when the flange portion 12 is fastened to the panel 3, the packing 23 is pressed against the panel 3 by the fastening force F1. Thereby, the packing 23 is pressed against the panel 3 by the fastening force F1 and the elastic force F2 of the pressing flange portion 52, and the sealing performance against the panel 3 can be further improved.

Further, when the locking arm 71 of the inner housing 40 locks the outer housing 10 and the pressing flange portion 52 is pressed against the panel 3, the pressing flange portion 52 has a bulge that bulges out to the side opposite to the panel 3. The portion 61 is smoothly bent and elastically deformed, and the flat pressing portion 63 is evenly pressed against the panel 3. Thereby, the elastic force F2 of the pressing flange portion 52 can be more evenly applied to the packing 23 over the circumferential direction.

Note that the present invention is not limited to the embodiments described above, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

Here, the features of the connector according to the embodiment of the present invention described above will be briefly summarized and listed below in [1] to [3].
[1] A connector (1) that is attached to an attached part (panel 3) having an attachment hole (5),
a first housing (outer housing 10) that is attached from one side of the attached part (panel 3);
a second housing (inner housing 40) that is attached from the other side of the attached part (panel 3);
Equipped with
The first housing (outer housing 10) is
a flange portion (12) facing the edge of the mounting hole (5);
an annular packing (provided on the flange portion (12) that closely contacts the edge of the mounting hole (5) in the mounted portion (panel 3) and seals between the mounted portion (panel 3) and the mounted portion (panel 3); 23) and
has
The second housing (40) includes:
a locking portion (locking arm 71) that locks the first housing (outer housing 10) through the attachment hole (5);
a pressing flange provided over the circumferential direction and elastically deformed by being pressed against the attached part (panel 3) with the locking part (locking arm 71) locking the first housing (outer housing 10); Part (52) and
has
The first housing (outer housing 10) is drawn toward the second housing (inner housing 40) by the elastic force (F2) of the elastically deformed pressing flange portion (52), so that the packing (23) Pressed by the attached part (panel 3),
A connector characterized by:

[2] The first housing (outer housing 10) has the flange portion (12) fastened to the attached portion (panel 3).
The connector according to [1], characterized in that:

[3] The pressing flange portion (52) is
a bulging portion (61) bulging toward the opposite side of the attached portion (panel 3);
a flat pressing part (63) formed on the outer peripheral side of the bulging part (61) and abutting on the attached part (panel 3);
has,
The connector according to [1] or [2], characterized in that:

1 Connector 3 Panel (attached part)
5 Mounting hole 10 Outer housing (first housing)
12 Flange portion 23 Packing 40 Inner housing (second housing)
52 Pressing flange portion 61 Swelling portion 63 Pressing portion 71 Locking arm (locking portion)
F1 Fastening force F2 Elastic force

Claims (3)

A connector that is attached to an attached part having an attachment hole,
a first housing attached from one side of the attached part;
a second housing attached from the other side of the attached part;
Equipped with
The first housing includes:
a flange portion facing the edge of the mounting hole;
an annular packing provided on the flange portion and closely contacting an edge of the attachment hole in the attached portion to seal between the attached portion;
has
The second housing includes:
a locking portion that locks the first housing through the mounting hole;
a pressing flange portion provided in a circumferential direction and elastically deformed by being pressed by the attached portion while the locking portion locks the first housing;
has
The first housing is drawn toward the second housing by the elastic force of the elastically deformed pressing flange portion, so that the packing is pressed against the attached portion.
A connector characterized by: In the first housing, the flange portion is fastened to the attached portion.
The connector according to claim 1, characterized in that: The pressing flange portion is
a bulging portion that bulges out to the opposite side of the attached portion;
a flat pressing portion formed on the outer peripheral side of the bulging portion and abutting the attached portion;
has,
The connector according to claim 1 or claim 2, characterized in that:

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