JPH0353429Y2 - - Google Patents

Description

[Detailed description of the invention] The invention of the present application aims to solve the following problems.

(Field of Industrial Application) This invention relates to a coaxial cable connecting plug used when connecting a coaxial cable to an electronic box.

(Prior art) When connecting the tip of a coaxial cable to an electronic box, the coaxial cable is inserted into a hollow plug, the outer insulation of the tip of the coaxial cable is peeled off, and the center conductor is connected to the center conductor. Separate the outer conductor into two forks,
By bending them to the left and right outer surfaces of the plug, and inserting and mounting the plug in this state into the recess of the electronic box, the center conductor and outer conductor are connected to the connection pieces for the center conductor and outer conductor in the recess. They were connected to each other. However, this method has the problem that when attaching the coaxial cable to the plug, if the center conductor and outer conductor are placed in the wrong position, proper electrical connection cannot be established.

(Problems to be Solved by the Invention) This invention eliminates the above-mentioned conventional problems by simply inserting the well-known coaxial cable in a step-stripped state into the hole provided in the body of the plug and storing it. , a coaxial cable with a structure that not only naturally determines the position of the center conductor and outer conductor, but also has good operability when inserting the cable, and also makes it easy to attach the coaxial cable to the plug in the correct position. The aim is to provide a plug for connection.

The configuration of the present invention is as follows.

(Means for Solving the Problems) The present invention takes the measures as described in the claims above, and its effects are as follows.

(Function) The stripped tip of the coaxial cable is inserted into the accommodation space of the plug, and its center conductor is made to protrude from the insertion hole at the tip. Then, the protruding center conductor is bent to the bent portion, and the outer conductor is fastened to the receiving piece using a fastener. In this state, insert the plug toward the recess formed in the electronic box. Due to the insertion, the center conductor bent in the bent portion is connected to the center conductor connection piece provided in the recess, and the outer conductor contact piece provided in the plug is provided in the recess. Connect to the external conductor connection piece.

(Example) Below, drawings showing examples of the present application will be described. In FIG. 1, which shows an antenna as an example of an electronic device, an antenna 1 attached to the upper end of a mast 2 is shown.
As is well known, the boom 3 includes a radiator 4, a waveguide 5, a reflector 6, etc. attached to the boom 3. As is well known, the radiator 4 is composed of a feed box 7 and antenna elements 8, which are attached to the feed box 7 so as to project from both sides thereof.

The power supply box 7 is shown as an example of an electronic box, and will be described in detail below with reference to FIGS. 2 to 11. Each power supply box 7 is composed of a concave main body 10 made of synthetic resin (for example, ABS resin, polypropylene resin, polystyrene resin) and a lid 11 that closes the upper opening thereof, and a balloon 13 exemplified as an electronic circuit component inside. is provided. This balloon 13 is for impedance matching.
One end thereof is electrically connected to the base of the antenna element 8, as is well known. The other end is connected to a connecting piece as described below.

Next, the connection portion of the coaxial cable to the power supply box 7 will be explained. 16 is a recess formed in the lower surface of the main body 10 (the side surface may be used if the electronic box is an antenna booster, for example); 17 is the recess 16
The plugs are shown respectively. In the recess 16, reference numeral 18 denotes a fitting portion provided at the peripheral end of the opening, and the bottom surface thereof is formed into a scalene heptagon as shown in FIG. 19 is a fastening part for screwing a plug fixing screw, 20 is a central conductor connecting piece provided on a part of the inner surface of the recess 16, and 21 is an external part provided on a part of the inner surface of the recess 16. Each conductor connection piece is shown. These connecting pieces 20 and 21 are formed by applying nickel plating to a phosphor bronze plate or a brass plate having a thickness of about 0.2 to 0.4 mm. Moreover, those connection pieces 20 and 21 have connection terminals 20a and 21a exposed on the inner surface of the power supply box 7, respectively.
The other end of the balloon 13 is connected to each.
22 is the inner surface of the recess 16, and the connecting piece 20
It shows the inset part formed on the opposite side. Next, in the plug 17, a main body 25 is made of the same synthetic resin material as the power supply box 7 and is formed into a bottomed cylindrical shape. In this main body 25, reference numeral 26 denotes a housing space for housing the stripped tip of the coaxial cable.
7. External conductor accommodating part 28 and unpeeled part accommodating part 2
It consists of 9. Reference numeral 30 indicates an insertion hole for the center conductor formed in the main body at the bottom of the accommodation space 26. Next, reference numeral 31 shown in FIG. 8 indicates a connecting member for the external conductor, which is provided on the side of the external conductor accommodating portion 28. In this connecting member 31, 3
Reference numeral 2 designates an external conductor receiving piece disposed along one side wall of the housing portion 28, and is made of a conductive material, for example, the same material as the connecting piece. Reference numeral 33 denotes a fastener provided on the side opposite to the receiving piece 32 in the housing portion 28, and includes a fastening piece 34 and a tightening screw 35.
and a threaded portion 36 formed on a part of the main body.
Next, on the outer surface of the main body 25, 37 shown in FIGS. 2 and 8 is an external conductor contact piece, which is formed integrally with the receiving piece 32, and is attached to the main body 25 in the state shown in FIG. There is. Reference numeral 38 denotes a bent portion of the center conductor provided outside the internal insulator housing portion 27, and a groove 38a is formed so that the center conductor can be stably placed. 39 indicates a groove for attaching the center conductor. Reference numeral 40 denotes a blocking piece provided on the opposite side of the curved portion 38, and is formed in a shape corresponding to that capable of being fitted into the fitting portion 22. Reference numeral 41 denotes a see-through window formed in the side wall of the accommodating portion 27 in the main body 25, and is formed so that the state in which the center conductor of the coaxial cable is directed from the internal insulator accommodating portion 27 to the insertion hole 30 can be visually observed. This window 41 is formed in the shape of a through hole, and is formed on two sides as shown in FIG. Incidentally, this see-through window may be made of a transparent synthetic resin material. Next, reference numeral 42 denotes a lid body which also serves as a fastening piece, and its planar shape is clearly shown in FIG.
It is formed into a scalene heptagon with a shape corresponding to the shape of the heptagon, so that it can be fitted into the fitting part 18 only when the direction thereof accurately corresponds to the fitting part 18. This lid body 42 is formed integrally with the main body 25, as is clear from FIGS. 2 and 3. Reference numeral 44 indicates a waterproof cap fitting portion formed integrally with the main body 25.

Next, in the above configuration, the coaxial cable 4
Connection 6 is made as follows. First, the tip of the coaxial cable 46 is stripped to expose the outer conductor 47, inner insulator 48, and center conductor 49. Next, the tip of the coaxial cable 46 is inserted into the housing space 2 with respect to the plug 17 separated from the recess 16.
6, and the center conductor 49 is made to protrude from the insertion hole 30 as shown in FIG. In the case of the above operation, as shown in FIG.
The center conductor 49 directed through the insertion hole 30 can be visually observed through the transparent window 41. Therefore, it is possible to easily insert the center conductor 49 into the insertion hole 30. In this case, even if the center conductor 49 is somewhat bent, the insertion hole 30
can be inserted accurately. In the case of the above-mentioned work, it goes without saying that the tightening screw 35 should be loosened to separate the tightening piece 34 from the receiving piece 32. Next, as shown in FIG. 10, it was confirmed through the see-through window 41 that the internal insulator 48 was fully inserted into the accommodating part 27 and that its tip reached the bottom or near the bottom of the accommodating space 26. If so, then by tightening the tightening screw 35, the tightening piece 3
4, the exposed portion of the outer conductor 47 of the coaxial cable 46 is tightened to the receiving piece 32. Further, the center conductor 49 protruding from the insertion hole 30 is bent to the side as shown by the arrow in FIG. Note that when the internal insulator 48 is inserted up to the housing portion 27 as described above,
It is also confirmed through the transparent window 41 that a part of the wire group of the outer conductor 47 does not pass around the inner insulator 48 to the center conductor 49 side. In this case, if such a situation is found, the distal end of the coaxial cable 46 is pulled out from the housing space 26, the distal end is arranged, and the above-described insertion is performed again.

Next, the plug 17 is inserted toward the recess 16. In this case, if the orientation of the plug 17 is not correct with respect to the recess 16, the blocking piece 40 comes into contact with the side wall of the recess 16 as shown in FIG. Since it happens to exist, it comes into contact with the connecting piece 20). For this reason, the plug 17 cannot be inserted deeper into the recess 16 than the position shown in FIG. 11, and the operator can easily know that the plug was inserted in an inappropriate direction. Therefore, in this case, change the direction of the plug 17 by 180 degrees and insert it again. When the above operation is performed and the plug 17 is inserted into the recess 16 in the appropriate direction, the lid 42 will fit into the fitting part 18, and the center conductor 49 will come into contact with the connection piece 20. Contact piece 37 contacts connection piece 21 . If this condition occurs, insert the fixing screw rod 43 into the lid body 42.
The plug 17 is fixed to the main body 10 of the power supply box 7 by screwing it into the fastening part 19 via the plug 17 . Further, the waterproof cap 45 through which the coaxial cable 46 has been passed in advance is fitted into the fitting portion 44. By the above operations, the work of connecting the coaxial cable 46 is completed.

(Effect of the invention) As described above, in the present invention, when connecting the coaxial cable 46 to the electronic box 7, the plug 17 is first attached to the coaxial cable 46, and then the plug 17 is connected to the electronic box 7. The coaxial cable 46 can be easily connected to the electronic box 7 by inserting the plug 17 into the recess 16 of the invention. is the part where the outer conductor 47 is accommodated when the stripped tip of the coaxial cable 46 is inserted into the accommodation space 26 in the plug body 25 and the center conductor 49 at the tip is inserted into the insertion hole 30. A structure in which a receiving piece 32 for attaching the outer conductor 47 is provided on the side, and a bending portion 38 of the center conductor is provided on the outer surface of the bottom of the main body 25 so that the center conductor 49 protruding from the insertion hole 30 can be bent. Therefore, it is possible to prevent the occurrence of an accident in which the outer conductor and the center conductor are mixed up and attached in reverse, which is the case with conventional structures.

Furthermore, when attaching the plug 17 to the coaxial cable 46 and trying to insert the center conductor 49 into the insertion hole 30, it is possible to direct the center conductor 49 toward the insertion hole 30 while viewing the tip of the center conductor 49 through the transparent window 41. This has the effect of making the insertion work easier.

Furthermore, when the internal insulator 48 of the coaxial cable becomes visible through the transparent window 41 by pushing the coaxial cable after the above-mentioned insertion, the strands of the outer conductor 47 are disturbed and extend beyond the periphery of the internal insulator 48. It has the advantage that it can be confirmed through the see-through window 41 whether it is going to the center conductor 49 side or not. As a result, if it is seen that the above group of wires is moving toward the center conductor, the connection worker can be advised to pull out the coaxial cable and properly strip the tip of the coaxial cable. This has the effect of preventing an accident in which the plug 17 is finished being attached to the coaxial cable while the outer conductor and the outer conductor are short-circuited through the wire.

Furthermore, after the internal insulator 48 is visible as described above, check whether the internal insulator 48 is fully inserted by looking through the transparent window 41.
It has the advantage that it can be determined whether the stripped tip of the coaxial cable 46 has been inserted into the plug 17 to the proper position. This has the effect of helping to prevent the occurrence of an accident in which the outer conductor is tightened or the center conductor is bent by the fastener 33 due to insufficient insertion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a perspective view showing an antenna as an example of electronic equipment, and FIG. 2 is a perspective view showing an antenna as an example of an electronic device.
The figure is an enlarged sectional view taken along the - line in Fig. 1, Fig. 3 is an enlarged sectional view taken along the - line in Fig. 2, and Fig. 4 is an enlarged sectional view taken along the - line in Fig. 2.
5 is a bottom view of the power supply box before connecting the plug, FIG. 6 is a plan view of the plug, FIG. 7 is a perspective view of the plug, and FIG. FIG. 9 is a partially cutaway front view showing the state in the middle of inserting the tip of the coaxial cable into the housing space, and FIG.
Figure 0 is a front view showing the state in which the tip of the coaxial cable has been inserted into the accommodation space, and Figure 11 is a longitudinal section showing the relationship between the recess and the plug when the plug is inserted in the wrong direction. Surface diagram. 7...Power supply box, 16...Recess, 17...Plug, 41...See-through window, 46...Coaxial cable.

Claims (1)

[Scope of utility model registration request] It is a plug that is inserted into a recess for plug insertion, which is recessed on one side of an electronic box, and has an outer conductor connection piece and an inner conductor connection piece on its inner surface, and the structure of the plug itself is as follows: has a hollow main body with a bottomed cylindrical storage space for storing the stripped end of the coaxial cable, and the bottom of the storage space in the main body is provided with a hole from the inside to the outside. An insertion hole through which the center conductor is inserted is bored on the same axis as the housing space, and the housing space is arranged so as to correspond to the stripped tip of the coaxial cable to be accommodated therein. , consisting of an internal insulator housing section and an external conductor housing section in order from the bottom, and a receiving piece made of a conductive material for attaching the external conductor to the side of the external conductor housing section in the housing space, and the receiving section. A fastener is provided for fastening the outer conductor to the piece, while on the outer surface of the body,
An external conductor contact piece made of a conductive material electrically connected to the receiving piece is attached so as to be able to come into contact with the external conductor connecting piece in the recess of the electronic box, while the center conductor is passed through the insertion hole. A bent portion is provided at a position where the tip of the center conductor protruding from the center conductor is bent in a state where the tip is bent so as to face the center conductor connecting piece, and a bent portion is provided on the side wall of the internal insulator accommodating portion of the main body. The plug for connecting a coaxial cable is characterized in that a see-through window is formed so that the direction of the center conductor from the internal insulator accommodating portion toward the insertion hole can be visually observed.