JPH10172646A - Waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability and retainability and miniaturize a waterproof connector apparatus without requiring secondary waterproof treatment in a waterproof connector which is to be used for communication apparatuses for outdoor and needs waterproof protection. SOLUTION: In a connector structure which is to be used for communication apparatuses for outdoor and carries out electric connection, a screw part 2 of a male connector 1 comprises a large diameter screw 2e installed in a part to be fitted by screwing by a nut 7 and having a D-cut face 2a with a D-shaped cross-section, a small diameter screw part 2c installed in a part to be fitted by screwing by a female connector 5 and having a smaller diameter than that of the large diameter screw 2e, and a flat face 5a formed in the step part in the boundary of the large diameter screw 2e and the small diameter screw 2c and made flat as to be brought into contact with the tip end part of the male connector 5 and the female connector 5 has a packing 5b at the tip end part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector used for outdoor communication equipment and the like, which requires waterproof protection.

[0002]

2. Description of the Related Art A conventional waterproof connector will be described with reference to FIGS.

FIG. 5 is a perspective view showing the configuration of a conventional male connector. The conventional male connector 11 includes a screw portion 12, a flange portion 13, and an O-ring 14. The screw portion 12 has a D-cut surface 12a cut in the vertical direction to make the cross section D-shaped, and a contact 12 for making electrical connection.
b, has a screw 12c when screw-fitted to the nut. The flange 13 has a circular groove 13 a, and the O-ring 14 is housed in the groove 13 a of the flange 13.

FIG. 6 is a perspective view showing the structure of a conventional female connector. The female connector 15 is provided with a contact 1 of the male connector 11 after the screw portion 12 of the male connector 11 is screw-fitted.
2b is provided with a contact 15a for electrical connection.

FIG. 7 is an exploded perspective view showing a state before attachment of a conventional example. The wall of the housing 16 has a mounting hole 16b through which the male connector 11 is inserted.
b is for inserting the screw portion 12 of the male connector 11
It has a D-cut surface 16a that is partially cut into a D shape so as to match the D-cut surface 12a of the screw portion 12. First, after the screw portion 12 of the male screw 11 is inserted into the mounting hole 16b, the wall surface of the housing comes into close contact with the O-ring 14 mounted in the groove 13a of the flange portion 13. After that, the screw 12c of the screw portion 12 is screw-fitted with the nut 17 from the opposite side of the housing. Further, the screw 12c is screw-fitted from above with the female connector 15. Then, male connector 11
Contact 12b and the contact 15a of the mass small salt hopper 15 come into contact with each other. Finally, male connector 11 and female connector 15
The self-bonding tape 18 is wrapped around the joining portion.

FIG. 8 is a cross-sectional view showing a state after attachment of a conventional example. Thus, the screw portion 12 of the male connector 11 having the D-cut surface 12a is inserted into the mounting hole 16b of the housing 16 also having the D-cut surface 16a,
It is also used for engagement with the female connector 15. That is, the screw 12c of the screw portion 12 is screwed to the screw 15c of the female connector 15. The housing 16 is the flange 1
After being in close contact with the O-ring 14 in the groove 13a, the nut 1
7, the O-ring 14 is further compressed. After the contact 12b of the male connector 11 and the contact 15a of the female connector 15 are engaged, the self-attaching tape 18 is wound around the joint between the male connector 11 and the female connector 15.

[0007]

In the conventional connector described above, the waterproof treatment of the joint between the female connector and the male connector is performed by a secondary treatment such as a self-attaching tape or the like. In other words, there is a problem that the workability is poor and the number of man-hours is increased because of the waterproof protection after the connector is connected.

[0008] Further, depending on the working environment, there is a case where there is a danger at the time of mounting at a high place such as on a telephone pole or the like.

Further, in the conventional connector, after the connector is connected, the joint between the female connector and the male connector must be subjected to a secondary waterproofing treatment such as a self-attaching tape. If there is an adjacent area, the mounting area for winding the self-attaching tape must be considered. As described above, there is also a problem that the connector mounting interval, the number of connectors, and the like are limited with respect to the mounting of the connectors in the device.

Further, in the prior art, a screw portion having a D-cut surface of a male connector for preventing rotation at the time of connecting the connector is also used for engagement with a female connector.
Therefore, if a secondary waterproofing process is not performed after the female connector is connected, there is also a problem that water enters the female connector along the D-cut surface for preventing rotation when the connector is fixed.

Accordingly, it is an object of the present invention to improve the workability and maintainability of a waterproof connector used for outdoor communication equipment and the like, which requires waterproof protection or the like, without performing a secondary waterproofing treatment. It is to provide a waterproof connector that can be used.

Another object of the present invention is to provide a waterproof connector which can reduce the size of the device.

[0013]

In order to achieve the above object, a waterproof connector according to the present invention is provided with a D-shaped mounting hole in a wall surface of a housing of an outdoor communication device or the like, which is inserted through the mounting hole. A male connector having a screw portion having the same D-shaped cross section as the mounting hole, and a flange portion engaging with the housing wall surface;
Waterproof including a nut for screw-fitting the screw portion of the male connector after the screw portion is inserted into the mounting hole, and a female connector for screw-fitting the screw portion after the male connector is fixed to the mounting hole by the nut. In the connector, the screw portion of the male connector is provided at a portion where the nut is screw-fitted,
A large-diameter screw having a D-cut surface cut so as to have a D-shaped cross section, and a small-diameter screw having a smaller diameter than the large-diameter screw portion provided in a portion to be screw-fitted to the female connector;
The female connector has a flat surface that is provided at a step portion at the boundary between the large-diameter screw and the small-diameter screw so that the distal end of the female connector abuts.

Further, it is preferable that the female connector has a packing at a distal end portion which comes into contact with the flat surface, and the packing is pressed against the flat surface and compressed to produce airtightness.

Further, it is preferable that the flange has a groove for accommodating an O-ring that comes into contact with the housing wall surface, and the O-ring is pressed against the housing wall surface and compressed to produce airtightness.

Furthermore, the D-cut surface of the large diameter screw can prevent the male connector from idling when the male connector is screwed with the nut.

Further, the D-cut surface of the large-diameter screw can determine the mounting angle with respect to the housing wall.

According to the present invention, in particular, the D-cut surface of the male connector for preventing rotation at the time of mounting the connector is provided only on the large-diameter screw of the screw portion fixed to the male connector, so that the large-diameter screw can be extended. Is provided with a small diameter screw smaller than the large diameter screw, and the small diameter screw is connected to the female connector. By making the diameter difference (step difference) between the large-diameter screw and the small-diameter screw flat, it is possible to prevent water from intruding into the contact with the female connector.
No further action is required.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 is an exploded perspective view showing the configuration of a male connector according to an embodiment of the waterproof connector of the present invention. The male connector 1 includes a screw portion 2, a flange portion 3, and an O-ring 4. The screw portion 2 includes a D-cut surface 2a cut in a vertical direction to make the cross section D-shaped, a contact 2b for making electrical connection, a small-diameter screw 2c having a small diameter, a large-diameter screw 2e having a large diameter, and a small-diameter. It has a flat plane 2d at the boundary between the screw 2c and the large diameter screw 2e. The flange 3 has a circular groove 3a.
And the O-ring 4 is accommodated in the groove 3 a of the flange portion 3. The D-cut surface 2a of the screw portion 2 is provided at a portion of the large-diameter screw 2e, and there is no D-cut surface 2a at the portion of the small-diameter screw 2c. The D-cut surface 2a prevents idling and determines the mounting angle when mounted on the mounting surface of the housing. The small-diameter screw 2c is smaller in diameter than the large-diameter screw 2e and is arranged on the extension of the large-diameter screw 2e.

FIG. 2 is a perspective view showing a configuration of a female connector of an embodiment of the waterproof connector of the present invention. Female connector 5
Is a connector connected to the male connector 1 of FIG.
The electrical connection is established by the engagement between the contact 5a and the contact 2b of the male connector 1. In addition, a packing 5b is provided at the outer peripheral end.

FIG. 3 is an exploded perspective view showing an embodiment of the waterproof connector according to the present invention before mounting. The wall surface of the housing 6 has a mounting hole 6b. The mounting hole 6b is used to insert the screw portion 2 of the male connector 1 into the D-cut surface 2a of the screw portion 2.
Has a D-cut surface 6a partially cut into a D-shape so as to conform to the above. Further, the mounting hole 6b is formed so that the small-diameter screw 2c and the large-diameter screw 2e of the male screw 1 pass therethrough.
It has a substantially D-shape slightly larger than the cross-sectional shape of e.

At the time of mounting, first, the screw portion 2 of the male screw 1 is inserted into the mounting hole 6b, and then the wall surface of the housing 6 comes into close contact with the O-ring mounted on the groove 3a of the flange portion 3. .
Then, from the opposite side of the housing 6, the nut 7
Of the large diameter screw 2e. The nut 7 has the same diameter as the large-diameter screw 2e for engaging with the large-diameter screw 2e of the one screw portion 2 of the male connector. Further, the small diameter screw 2c is screw-fitted from above with the female connector 5. Finally, the packing 5a of the female connector 5 is engaged with the flat surface 2d of the screw portion of the male connector 1.

FIG. 4 is a sectional view showing a state after the embodiment of the waterproof connector of the present invention is attached. As shown in the drawing, in the present invention, a male connector 1 having a D-cut surface 2a is provided.
The large diameter screw 2a of the screw portion 2 is inserted into the mounting hole 6b of the housing 6 also having the D-cut surface 6a. After the insertion, the nut 7 is screwed into the large diameter screw 2e, and the housing 6 is tightened.
The O-ring 4 attached to the groove 3a of the flange 3 comes into contact with the housing 6, and the O-ring 4 is compressed by the housing 6, so that airtightness is generated. On the other hand, the small diameter screw 2c having no D-cut surface is
It is used for engagement with the screw 5c of the female connector 5. That is, since the small-diameter screw 2c does not have a D-cut surface, the small-diameter screw 2c is tightly fitted to the screw 5c of the female connector 5.
Then, contact 2b of male connector 1 and contact 5 of female connector
a and the electrical connection is made. Since the packing 5b is provided at the end of the female connector 5, the packing 5b engages with the flat surface 2d of the male connector 1, and
Water is prevented from entering the female connector 5. That is, the female connector 5 is engaged with the small-diameter screw 2c so that the contact 2b of the male connector 1 and the contact 5a of the female connector 5 come into contact with each other near the end of the screw connection to make electrical connection, and at the same time, the packing 5b of the female connector 5 Is pressed against the flat surface 2d of the male connector 1 and compressed, whereby airtightness such as waterproofing is generated.

[0025]

According to the waterproof connector of the present invention, since a member for waterproofing the joint portion with the female connector is included in the constituent member of the male connector, it is not necessary to perform a secondary waterproofing treatment. Therefore, when providing waterproof protection to the connector plug in a connector used in an outdoor communication device or the like, it is not necessary to perform a secondary waterproofing treatment such as a self-attaching tape on a joint portion between the male connector and the female connector, This has the effect of improving workability and man-hours.

Also, depending on the working environment, even when there is a danger at a high place such as on a telephone pole, it is only necessary to screw the male connector into engagement with the female connector, thereby avoiding the danger at the time of mounting. It has the effect of being able to do so.

Further, when a portion where the self-attaching tape needs to be wound is adjacent to a joint portion such as a plug, there is no need to consider a mounting area around which the self-attaching tape is wound, and it is not necessary to mount a connector in the device. The effect that the area can be minimized and the size of the device can be reduced can also be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a male connector of an embodiment of a waterproof connector of the present invention.

FIG. 2 is a perspective view showing a configuration of a female connector of an embodiment of the waterproof connector of the present invention.

FIG. 3 is an exploded perspective view showing a state before mounting of the embodiment of the waterproof connector of the present invention.

FIG. 4 is a sectional view showing a state after the waterproof connector according to the embodiment of the present invention is attached.

FIG. 5 is a perspective view showing a configuration of a conventional male connector.

FIG. 6 is a perspective view showing a configuration of a conventional female connector.

FIG. 7 is an exploded perspective view showing a state before attachment of a conventional example.

FIG. 8 is a cross-sectional view showing a state after attachment in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Male connector 2 Screw part 2a D cut surface 2b Contact 2c Small diameter screw 2d Flat surface 2e Large diameter screw 3 Flange part 3a Groove 4 O ring 5 Female connector 5a Contact 5b Packing 5c Screw part 6 Housing 6a D cut surface 6b Mounting hole 7 Nut 11 Male connector 12 Screw part 12a D cut surface 12b Contact 12c Screw 13 Flange part 13a Groove 14 O ring 15 Female connector 15a Contact 15c Screw part 16 Housing 16a D cut surface 16b Mounting hole 17 Nut 18 Self-attaching tape

Claims (5)

[Claims] A D-shaped mounting hole is provided in a wall surface of a housing of an outdoor communication device or the like, and a threaded portion having the same D-shaped cross-section as the mounting hole to be inserted into the mounting hole; A male connector having a flange portion that engages with the housing wall surface; a nut that screw-fits the screw portion of the male connector after the screw portion is inserted through the mounting hole; and After being fixed to the mounting hole by the above, the screw portion and the female connector which is screw-fitted are provided, wherein the screw portion of the male connector is provided at a portion where the nut is screw-fitted. ,
A large-diameter screw having a D-cut surface cut so as to have a D-shaped cross section; a small-diameter screw having a smaller diameter than the large-diameter screw provided in a portion to be screw-fitted to the female connector; A flat surface provided at a stepped portion at a boundary between a large diameter screw and the small diameter screw, and flattened so that a distal end portion of the female connector is in contact with the waterproof connector. 2. The female connector according to claim 1, wherein the female connector has a gasket at a tip portion which abuts on the plane, and the gasket is produced by pressing the gasket against the plane and compressing the gasket. 2. The waterproof connector according to 1. 3. The flange has a groove for accommodating an O-ring abutting on the housing wall surface, and the O-ring is pressed against the housing wall surface and compressed to produce airtightness. The waterproof connector according to claim 1, wherein: 4. The D-cut surface of the large diameter screw prevents idling of the male connector when the nut is screwed into the male connector.
The waterproof connector according to any one of the above. 5. The waterproof connector according to claim 1, wherein the D-cut surface of the large-diameter screw determines a mounting angle with respect to the housing wall.