JPH0317424Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a waterproof structure for a connecting portion between a waterproof device and a connector.

[Conventional technology]

Signals sent from relay communication satellites (e.g.
3.7GHz to 4.2GHz) with a parabolic antenna,
This received signal is converted into a predetermined high frequency signal (for example, 470M
Hz to 1.4GHz) and transmit it to the receiver via a coaxial cable, due to loss during transmission.
The SN ratio deteriorates. To prevent this, a coaxial line amplifier is inserted in the middle of the coaxial cable, but since this coaxial line amplifier is generally installed outdoors, the equipment itself is formed with a waterproof structure, and the equipment and F The connecting portion of the type connector is also formed to have a waterproof structure. Conventionally, a waterproof structure for a joint between a coaxial line amplifier and an F-type connector as a waterproof device has been formed as shown in FIG. That is, the male screw 7 formed on the conductive body 6 of the F-type connector 5 is screwed into the female screw 3 formed on one side of the conductive casing 2 of the coaxial line amplifier 1 via the rubber packing 4. By doing so, the joint was made waterproof. 8 is a center contact of the F-type connector 5, 9 is a coaxial cable connected to the F-type connector 5, 10 is a coaxial cable connected to the other side of the housing 2 via a nut 11, and 12 is an amplifier circuit. It is a printed circuit board.

[Problem that the invention attempts to solve]

As mentioned above, in the conventional example shown in Fig. 2, the rubber packing 4 was used to make the joint waterproof, so the quality of the rubber packing 4 deteriorated over time, resulting in a short waterproofing life, and the screws had to be tightened strongly. However, there was also the problem that the assembly process could not be automated, resulting in high costs. It has been considered to connect the main body of the F-type connector to the coaxial line amplifier casing by soldering or adhesive without using a rubber seal, but the conventional method using soldering has poor workability and requires a large amount of work. There is a problem of high cost, and although adhesives are easy to work with in the assembly process, the electrical connection between the F-type connector body and the coaxial line amplifier case is poor, and in reality it is difficult to use. There was a problem with it being unusable.

The present invention was developed in view of the above-mentioned problems, and aims to provide a waterproof structure for the joint between a waterproof device and a connector that has good workability in the assembly process and good electrical connectivity. .

[Means for solving problems]

The waterproof structure of the connecting part between a waterproof device and a connector according to the present invention includes an adhesive that is formed on the casing of the waterproof device and communicates with the outside of the casing between the starting end and the intermediate portion when the internal thread is screwed together. A press-fit hole is drilled, and an adhesive press-fitted through the adhesive press-fit hole is used to fix the space between the starting end and the intermediate portion of the female thread of the casing to the male thread formed in the main body of the connector. It is characterized by this.

〔Example〕

FIG. 1 shows an embodiment of the present invention, and in this figure, 15 is a coaxial line amplifier as a waterproof device. The coaxial line amplifier 15 is
It consists of a metal cylindrical housing 16 and a printed circuit board 17 provided inside the housing 16. The printed circuit board 17 includes circuit elements 18 such as resistors, capacitors, and ICs, and an amplifier formed with circuit patterns. A circuit is provided. A female thread 19 is formed on the inner wall surface of one side opening of the housing 16, and when the female thread 19 is screwed together, a starting end 19a and an intermediate portion 19 are formed.
An adhesive press-fit hole 20 communicating with the outside of the housing 16 is formed between the middle part 1 and the middle part 1.
An adhesive hole 21 communicating with the outside of the casing 16 is bored in 9b. A male thread 24 formed on one side of the main body 23 of the F-type connector 22 is screwed into the female thread 19 of the housing 16.
4 is screwed together, an adhesive retaining groove 25 is formed in the intermediate portion 24a, which is recessed from the screw surface. The adhesive 26 press-fitted from the adhesive press-fitting hole 20 connects the housing 16 between the intermediate portion 24a and the terminal end 24b of the male thread 24 formed on one side of the main body 23 of the F-type connector 22. It is fixed to the female thread 19. At this time, the adhesive exit hole 21 facilitates the press-fitting of the adhesive 26 and also makes it easy to confirm the entry position of the adhesive 26. In this case, the press-fitted adhesive 26 is attached to the female thread 1.
9 into the terminal end 19c of the main body 23 and the housing 16 at this terminal end 19c.
Maintain a good electrical connection with the The center contact 27 of the F-type connector 22 is connected to the circuit pattern of the printed circuit board 17. A coaxial cable 28 is attached to the other side of the main body 23 of the F-type connector 22. One side of the main body of the F-type connector 29 is screwed into the other side opening of the housing 16 in the same manner as the one-side opening, and the coaxial cable 30 is connected to the other side of the F-type connector 29. It is installed.

In the above embodiment, an adhesive hole is provided in the housing of the coaxial line amplifier, and an adhesive stopper groove is provided in the main body of the F-type connector to facilitate press-fitting of the adhesive to be injected from the adhesive press-fit hole. , it was made easier to confirm the entry position of the adhesive, and it was made to more reliably prevent the adhesive from flowing between the starting end of the male thread on the main body of the F-type connector and the female thread on the casing. The invention is not limited to these, and the adhesive exit hole and adhesive stopper groove may be omitted.

In the above embodiment, a coaxial line amplifier is used as an example of a waterproof device, and an F-type connector is used as an example of a connector. The present invention can also be used for a waterproof structure for a connection part between a waterproof electronic device or an electric device and a connector electrically coupled thereto.

[Effect of idea]

The waterproof structure of the connection part between a waterproof device and a connector according to the present invention is formed in the casing of the waterproof device as described above, and is provided between the starting end and the intermediate portion when the female screw is screwed into the external part of the casing. A communicating adhesive press-fitting hole is bored, and the adhesive press-fitted from the adhesive press-fitting hole fixes the space between the starting end and the intermediate part of the female thread of the casing to the male thread of the main body of the connector. It was configured as follows. Therefore, a good electrical connection between the casing of the waterproof device and the main body of the connector is ensured at the terminal end of the female thread. Furthermore, since the connection is waterproofed with adhesive, it has a longer waterproof life than conventional rubber gaskets, and there is no need to tighten the screws strongly, making it possible to automate screw tightening and improve the assembly process. Workability is good and costs can be reduced.

In addition, if an adhesive hole is drilled in the middle of the female thread formed in the housing of a waterproof device, it will be easier to press the adhesive injected through the adhesive press-fit hole, and the adhesive will not be able to enter. Since the position can be confirmed, the reliability of both the electrical connection and the waterproof connection between the casing of the waterproof device and the main body of the connector increases.

Additionally, if an adhesive groove is provided in the middle of the male thread formed on the main body of the connector, it will be easier to prevent the adhesive from flowing between the starting end of the male thread on the main body and the female thread on the housing. Since this can be reliably prevented, the reliability of electrical connection and waterproof connection between the main body and the casing is further increased.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of a waterproof structure for connecting a waterproof device and a connector according to the present invention, and FIG. 2 is a partially cutaway front view showing a conventional example. 15...Coaxial line amplifier (waterproof equipment), 1
6... Housing, 19... Female thread, 19a... Start end, 19b... Middle part, 20... Adhesive press-fit hole,
21...Adhesive hole, 22, 29...F type connector (connector), 23...Main body, 24...Male thread, 24a...Middle part, 24b...Terminal part, 25
...Adhesive stopper groove.

Claims (1)

[Claims for Utility Model Registration] (1) A male thread formed on the main body of the connector is screwed into an internal thread formed on the casing of a waterproof device to electrically connect the casing and the main body. An adhesive stop groove is provided between the starting end and the end when the male thread of the main body is screwed together, and an adhesive stop groove is provided between the start end and the adhesive stop groove when the female thread of the casing is screwed together. An adhesive press-fit hole communicating with the outside of the casing is formed between the positions of A waterproof device and a connector, characterized in that an adhesive press-fitted from an adhesive press-fitting hole fixes a part between the starting end of the female thread of the housing and the position of the adhesive retaining groove to the male thread. Waterproof structure for connecting parts. (2) Waterproof equipment is a coaxial line amplifier inserted in the middle of a coaxial cable, and the connector is F
A waterproof structure for a connecting portion between a waterproof device and a connector as set forth in claim 1 of the utility model registration claim, which serves as a type connector.