JPS6031175Y2 - coaxial connector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coaxial connector, and particularly to a waterproof structure for a female connector.

In outdoor television signal distributors, branching switches, etc.
Some devices house circuit elements in a waterproof case and have a connector for connecting to a coaxial cable on the wall of the case.

1A and 1B show a female connector of this type, and FIG. 2 shows a state in which the male connector and the female connector are connected.

As shown in FIGS. 1a and 1b, this connector is installed in a cylindrical connector body 2 that is integrally formed on the wall of a waterproof case 1 for outdoor branching and distribution of television signals. By fitting the half capsules 3.4 together, a receiving pin holder having a capsule shape and containing a receiving pin 5 inside is housed, and the base end of the holder is covered with a resin layer 6 from the inside of the case. There is.

Then, as shown in FIG. 2, a mail connector is applied to this connector body 2, and the male and female connectors are tightened using a nut 10 to connect the male and female connectors.

Reference numeral 11 denotes an outer conductor contact guide, which is connected to the outer conductor of the coaxial cable 12.

When the male and female connectors are coupled, the center conductor of the male connector connected to the center conductor of the coaxial cable 12 comes into contact with the receiving pin 5 of the female connector.

With this configuration, when the male and female connectors are not connected, rainwater that has penetrated through the receiving pin 5 from the hole in the receiving pin holder is prevented from entering the case 1 by the resin layer 6.

However, with such a waterproof structure, although the circuit elements inside the case 1 are protected from rainwater, the receiving pins 5 etc. are easily corroded by rain and ice, and if the female connector is left outdoors with the female connector exposed, problems may occur. occurs.

Furthermore, female connectors that are integrally molded with such distributors and the like by Gui-casting have problems in mold manufacturing, and when providing a plurality of female connector bodies 2 so that their axial directions are orthogonal, mold manufacturing is required. becomes difficult.

In other words, any of these female connectors are case 1.
If the mold is manufactured in such a way that the capsule 3.4 (i.e., the receiving pin holder) is inserted from the inside of the mold, the mold cost will be extremely high, which is practically impossible.

Therefore, an object of the present invention is to provide a coaxial connector that has good waterproof performance against rainwater and is easy to manufacture.

In order to achieve this objective, the present invention inserts the receiving pin holder, packing member, and annular holding member from the outer end of the cylindrical connector body, and then pushes the outer end of the cylindrical connector body toward the annular holding member while pressing the annular holding member. A packing member is fixed under pressure between the bottle receiving side end of the receiving pin holder and an annular holding member, and the center conductor of the mail connector is inserted into the opening of the holding member and the approximately conical recess of the packing member. This is a coaxial connector that can be inserted through.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 8.

FIG. 3 shows the structure of the main parts of the female connector according to the present invention, in which 20 is a packing member, 21 is a holding member, and the same reference numerals as in FIG. 1 indicate the same elements.

The packing member 20 has a substantially conical recess in the center, and is made of a material such as waist rubber and has a shape in which the periphery of the recess protrudes.

Annular pressing member 2 placed on this packing member 20-E
1 has a concave shape around an opening drilled in the center, and the side surfaces of this concave portion are inclined toward the bottom.

The packing member 20 is placed on the pin-receiving end of the half capsule 4 made of plastic or the like, and the annular pressing member 21 is placed on top of the packing member 20.
After the connector body 2 is placed, the outer end of the connector body 2 is caulked.

Half capsule 4 is fitted with half capsule 3 to form waterproof case 1.
Since the end of the half-capsule 3 is engaged with the connector body 2, the half-capsule 3 can be inserted into the capsule accommodating part by caulking the packing member and presser member 21 at the end of the half-capsule 4. 3 and 4 are firmly supported within the connector body 2.

FIGS. 4a and 4b are diagrams showing the assembly process of the female connector.

To assemble this female connector, first insert the receiving pin holder, packing member 20 and holding member 21 from the outer end of the connector body 2, and insert the inclined side surface 21a of the concave portion of the holding member 21 into the protruding corner 20a of the fitting member 20. is brought into contact with.

Then, the outer end of the connector main body 2 is caulked and the holding member 21 is pressed with a force F1.

As a result, a force F2 acts on the protrusion of the packing member 20 in the direction of its central axis, and this force F2 causes the protrusion to contract around the conical recess.

Furthermore, since the base 20b of the packing member 20 is pressed by the base 21b of the holding member 21, a force F3 acts in the radial direction.
This force F3 pushes the base 20b of the packing member 20 in the radial direction and brings it into close contact with the inner wall of the connector body 2.
Preventing rainwater from entering the connector body 1.

When the female connector is connected to the female connector assembled in this way, the center conductor of the male connector is guided to the inner wall of the substantially conical recess of the packing member 20, and then breaks through the thinned packing member of the recess. , makes contact with the receiving pin 5 of the female connector.

If the male and female connectors are tightened tightly by tightening the nut 10, the male and female connectors will become a continuous body, and rainwater will not seep in from the outside. Therefore, even if there is a hole in the center of the packing member 20, the There is no problem because it contracts in the direction of the central axis due to the force F2 acting on the packing member 20 and the reaction force from the inner wall of the connector body caused by the force F3.

FIGS. 5a and 5g show various modifications of the packing member 20, which may take any shape depending on the shapes of the connector body 2, half capsule 4, and presser member 21.

FIGS. 6a and 6c show modifications of the holding member 21, and FIGS. 7a and 7b show modifications of the capsule 4.

These may be used in combination with each of the packing members 20 shown in FIG.

8a and 8b show an embodiment in which the holding member 21 is press-fitted into a predetermined portion of the connector body 2. FIG.

That is, by pressing the holding member 21A or 21B into the outer end of the connector main body 2, a caulking effect is provided.

In the above embodiment, only the tip of the connector main body 2 is sealed, but if a sealing member is also provided at the base end, it is possible to prevent water from entering the case even if water gets into the capsule.

Note that the present invention is applied to an F type connector.

As shown above, in the present invention, a packing member, which initially does not have a hole, is pressed and fixed to the outer end of the connector main body of a female connector via an annular holding member, so that the base of the packing member expands in the radial direction. It is in close contact with the inner wall of the connector body, so rainwater will not seep into the female connector regardless of the situation in which the connector is placed until the male connector is coupled.

Moreover, as mentioned above, the base of the packing member is pressed by the holding member toward the pin-receiving end of the receiving pin holder, so it expands in the radial direction and receives a reaction force in the centripetal direction from the inner wall of the connector body. Since the protrusion around the conical concave portion is pressed in the centripetal direction by the conical concave portion of the holding member, the packing member receives a strong centripetal force.

Therefore, when the center conductor of the mail connector is inserted through the opening of the annular holding member along the inner wall of a substantially conical recess and the mail connector is coupled by piercing the recess, the centripetal direction that occurs in the packing member The hole drilled in the recess contracts due to strong force and comes into close contact with the center conductor of the mail connector, which not only prevents rainwater from entering through the hole, but also contracts and closes the hole even after the center conductor is pulled out. Therefore, it is possible to prevent rainwater from entering through the hole, and to provide a coaxial connector that is easy for an operator to handle.

Furthermore, since fixing work such as caulking is performed after placing these members on the outer end of the cylindrical connector body using a packing member and a holding member, the receiving pin holder is placed on the outer end of the connector body, that is, on the outside of the waterproof case. As a result, it is possible to avoid complicating the mold for manufacturing a coaxial connector that is integral with the case.

[Brief explanation of the drawing]

Figures 1a and 1b show a female connector of a conventional F-type open shaft connector installed in a waterproof case, Figure 1a is a side view, and Figure 1a is a sectional view taken along line A-A in Figure 1a. , Figure 2 is the first
FIG. 3 is a partial sectional view showing the main parts of a coaxial connector to which an embodiment of the present invention is applied; FIGS. 4 a and b
is a partial sectional view of the coaxial connector showing the assembly process of FIG.
Figures 5a to g1 Figures 6a to c1 and Figures 7a and 7a and b are explanatory diagrams showing modifications of the packing member, presser member, and capsule, respectively, and Figures 8a and b are illustrations of other embodiments of the present invention. FIG. 3 is a sectional view of a main part showing an example. 1... Waterproof case, 2... Connector body, 3゜4... Half capsule, 20...
Packing member, 21... Pressing member.

Claims (1)

[Claim for Utility Model Registration] A plurality of cylindrical connector bodies protruding from the wall of a waterproof case for outdoor branching and distribution of television signals are integrally formed with the waterproof case so that their axial directions are perpendicular to each other. Inside each of the cylindrical connector bodies, a receiving pin holder supporting a receiving pin connected to the center conductor of the mail connector, and a packing member and an annular pressing member fixed to the pin receiving side end of the receiving pin holder, In the coaxial connector, the packing member has a substantially conical recess at the center and the periphery of the recess has a protruding shape, and the annular pressing member presses the protrusion of the packing member in the direction of its central axis. The receiving pin holder, the packing member, and the holding member are inserted into the connector body from the outer end thereof, and this outer end is bent toward the holding member, so that the packing member is connected to the pin receiving side end of the receiving pin holder. A coaxial connector supported by pinching between the holding member.