JPH0195473A - Connecting device - Google Patents

Abstract

PURPOSE:To make the mechanical connection of a parallel feeder or coaxial cable secure by providing a through site of a clamp screw for a retainer plate in a discentered position near one conductor retaining part avoiding the center position between two lead wire setting parts. CONSTITUTION:The clamping site of a clamp screw 11 for a retainer plate 12 is provided in a discentered position near one lead wire setting part, avoiding the intermediated position between two lead wire setting parts 26, 27. Hence, one lead wire 2a of a parallel feeder 2 can be clamped to the lead wire setting part with an extremely strong force to prevent slipping out of the lead wire 2a, resulting in a film mechanical and electric connections of the parallel feeder 2. Further, since a central conductor setting part 31 is provided in the intermediate position between two lead wire setting parts 26, 27, a coaxial cable 3 can be firmly put in connection both mechanically and electrically by inserting a central conductor 3a of the coaxial cable 3 straightly therein and clamping it there with a clamp screw 11.

Description

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

(Industrial Application Field) This invention relates to a connection device used to connect a parallel feeder or coaxial cable to an antenna element conductor or any electronic circuit, including a power supply, a duplexer (separator), and a mixer. It can be used as a terminal connection device for devices such as boosters, matching boxes, etc.

(Prior art) In the conventional connection device of this type,
As shown in Japanese Utility Model Application Publication No. 58-103474, there are two 21! II abutting parts are provided, and tightening screws with holding pieces are attached to these conductor abutting parts, and the two conductors of the parallel feeder are tightened by the above-mentioned tightening screws, respectively, so that the connection of the parallel feeder is easy. There was the trouble of having to rotate the two tightening screws at the same time.

In addition, for another connection device,
As shown in the publication, one tightening screw for tightening a holding plate having two holding parts is provided at the center position of the two conducting wire fitting parts provided on the connector body, and the above-mentioned conducting wire fitting is provided. After inserting the two conductors of the parallel feeder between the attachment part and the holding part, the tightening screw is turned to press the two conductors against the two conductor contact parts, respectively. When the parallel feeder is connected, the pressing force on the conductor of the parallel feeder by the holding plate is half of the tightening force of the tightening screw, making it easier to pull out the conductor, and when connecting the center conductor of the coaxial cable, the center It is necessary to bend the conductor to one side of the two conductor contact portions, and there is a problem in that the workability of the connection is poor.

(Problems to be Solved by the Invention) The present invention provides a connecting device that can easily connect parallel feeders or coaxial cables, and can also strengthen the mechanical connection of parallel feeders, except for the above-mentioned conventional problems. This is what I am trying to do.

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) When the two conductors of the parallel feeder are inserted between the two conductor abutting parts of the connector body and the temporary presser and the tightening screws are tightened, each conductor is pressed against the conductor abutting part. Can be connected. When the parallel feeders are connected, one conductor of the parallel feeder can be pressed with a force greater than half the tightening force of the tightening screw to strengthen the mechanical connection of the one conductor. As a result, the possibility of the parallel feeder falling off from the connecting device is extremely reduced. When connecting a coaxial cable, the center conductor can be firmly connected by inserting the center conductor straight between the connector body and the holding plate and then tightening the tightening screw.

(Embodiments) The drawings showing the embodiments of the present application will be explained below. Reference numeral 1 in FIG. 1.2.6 indicates a part of a dipole antenna, and a part of a well-known feeder box A and a part of an antenna element B attached thereto are shown. 2 is a parallel feeder connected to a connection device described below in the feed box A; 3
is also a coaxial cable, and one of these cables is selectively connected.

Next, in the power supply box A, 4 is a case, which, as shown in FIG. 6, is composed of a case body 5 and a lid 5A. The case 4 is molded using an insulating material, for example, a plastic material such as ABS resin. The case body 5 includes a reinforcing portion 5a and the parallel feeder 2 or the coaxial cable 3.
An insertion hole 5b for insertion is provided. 6 is parallel feeder 2
Alternatively, a connecting device 7, which is disposed within the case 4 to connect the coaxial cable 3, is a converter, which is connected between the connecting device 6 and the antenna element B.

Next, as shown in FIG. 1, the connection bag W6 is attached to a connection device body 8 which is fixedly disposed on the reinforcement portion 5a, and is attached to the connection device body 8 with two tightening screws 9. It consists of a tightening plate 10 and a holding plate 12 which is attached to the connector main body 8 with one tightening screw 11.

In the connector main body 8, 21 is a base established from the reinforcing portion 5a, and is integrally molded with the case main body 5 from an insulating material. Reference numeral 22 designates a housing recess formed on the front surface 21a of the base 21, and is located on an extension of the insertion hole 5b. Reference numeral 23 denotes a pair of screw holes provided in the front surface 21a, with the accommodation recess 22 in between so that the tightening screw 9 can be screwed into the holes. The screw hole 2
3 is provided so as to be inclined with respect to the front surface 21a in the same direction as the inclination direction of a screw hole 30, which will be described later. 24 is an external conductor abutment part provided on the bottom surface of the accommodation recess 22;
It is comprised of a concave surface of a conductive U-shaped metal plate 24A attached to the base 21. The above metal plate 2
4^ is held by fitting a terminal plate 20 provided integrally with the terminal plate 4 into a hole 25 of the base 21. 26.2
Reference numeral 7 denotes two conductive wire abutting portions provided on the front surface 21a, each of which is comprised of the upper surfaces of conductive flat metal plates 26 and 27A attached to the base 21, respectively. The two conductor abutting portions 26 and 27 are arranged on both sides of the extension of the axis of the insertion hole 5b. The metal plates 26A and 27A also have terminals Fi1 provided integrally with the metal plates 26A and 27A.
8.19 into the holes 28.29 of the base 21. 30 is a screw hole provided in the front surface 21a, which constitutes the tightening position of the tightening screw 11;
It is set at a position that is unevenly distributed near one of the conductor wire contact portions 27, avoiding the center position of the conductor wire contact portions 26 and 27.

As clearly shown in FIG. 6, this screw hole 30 is provided so that its axis 30a is inclined forward in the insertion direction of the parallel feeder or coaxial cable with respect to the insertion hole 5b (indicated by arrow C). . 31 is the above-mentioned conductor contact portion 26.27
A metal plate 27A constituting one of the conductor contact parts 27, which is a central conductor contact part provided on the front surface 21a at a central position between
It consists of the upper surface of the metal Fi31A which is an extension of the . Gap G (fourth
(see figure) is set to a value that provides the best electrical impedance, and in the figure it is set to 4.7.

Reference numeral 32 denotes a through hole provided on the front surface 21a of the base 21 between the center conductor abutting portion 31 and the other conducting wire abutting portion 26. This through hole 32 is for receiving a fitting piece 41 to be described later, and as shown in FIG.
It is formed to have a rectangular cross section. 33. Reference numeral 33 denotes an upright piece integrally formed at both ends of the front surface 21a, and is designed to prevent the conductors 2a, 2a placed on the conductor abutting portions 26 and 27 from moving outward. . Reference numeral 34 denotes a spring piece disposed on the opposite side of the base 21 from the side to which the power supply line is attached; one end is free, the base is integrally connected to the base 21, and the free end faces the through hole 32. It is located like this. The spring piece 34 is molded integrally with the base 21, and its free end is elongated so as to have spring properties.

Next, the above-mentioned fastener vilO is made of a hard material having insulation properties, and for practical purposes, it is preferable to use polycarbonate, which is a synthetic resin with good transparency.

In the above tightening vi10, 36 is the front surface 2 of the base 21.
The abutment surface 35.35 for abutting against the abutment surface 35 is a pair of screw insertion holes, which are formed to be inclined in the same direction as the screw hole 23 with respect to the abutment surface 36.

Next, the holding plate 12 is made of the same material as the tightening plate 10. In the holding plate 12, 38 is a contact surface, 40.40 is a conductive wire holding part (hereinafter referred to as a holding part) provided at both ends of the contact surface 38, and the above-mentioned conductive wire contact part 26.
27 so that it can be polymerized.

Reference numeral 39 denotes a screw insertion hole, which is provided at a position that is unevenly distributed near one of the conducting wire holding parts 40, avoiding the center position of both R wire holding parts 40 and 40. The screw insertion hole 39 is also formed to be inclined in the same direction as the inclination direction of the threaded hole 30 with respect to the abutment surface 38. Reference numeral 40a shown in FIG. 7 is a center conductor holding portion provided at the middle portion of the abutment surface 38, and is formed so as to overlap the center conductor abutment portion 31. Reference numeral 41 denotes a fitting piece protruding from the abutment surface 38, which is formed to have a cross-sectional shape corresponding to the rectangular shape of the through hole 32 so that it can be fitted into and removed from the through hole 32, and in the fitted state, it is a holding plate. The rotation of 12 is regulated. As shown in FIG. 2, the feeder insertion side surface 41a of the fitting piece 41 is arranged so that the feeder is oriented diagonally with respect to the wire insertion direction C so as to guide one conductor 2a toward the other conductor abutting portion 26. It is as it should be. The amount of protrusion L (see FIG. 3) of the fitting piece 41 is the distance between the holding part 40 of the holding plate 12 and the conductor abutting part 26, 27 when the tip of the fitting piece 41 comes into contact with the spring piece 34 in its natural state. The size is set to create a gap larger than the thickness of the conducting wire 2a, so that the pushing blade due to the restoring force of the spring piece 34 acts on the presser plate 12 in the tightened state.

Next, the converter 7 is constituted by a printed circuit board as shown in FIG. That is, a U-shaped inner conductor (a half-wave detour line, the electrical length of which is l wavelength) 42 and a square frame-shaped outer conductor (ground conductor) are disposed on one surface of an insulating substrate 46.
43. Both ends of the inner conductor 42 are soldered to the terminal plate 18.19 and connected to a power feeding terminal 44.44 of the antenna element B via a lead vA45.45. Further, the outer conductor 43 is connected to the terminal plate 20 by soldering.

In the case of the above structure, the converter 7 is assembled to the connector main body 8 at the manufacturing factory. Further, the two tightening screws 9 inserted through the screw insertion holes 35 and 35 of the tightening plate 10 are partially screwed into the screw holes 23 and 23 of the connector main body 8, while the presser plate 12 is fitted into the through hole 32. At the same time as fitting the mating piece 41, the tightening screw 11 inserted into the screw insertion hole 39 is partially screwed into the screw hole 30, and the area between the external conductor abutment part 24 and the tightening plate 1O and the conductor abutment part 26 is fitted. .27 and the presser part 40°40, respectively, with a required gap, and the product is released in that state. When assembling the presser plate 12 to the connector main body 8 as described above, when the fitting piece 41 of the presser plate 12 is fitted into the through hole 32, rotation of the presser plate 12 relative to the connector main body 8 is prevented. Since the screw insertion hole 39 and the screw hole 30 overlap, the tightening screw 11 can be screwed into the screw hole 30 very easily.

Next, when connecting the parallel feeder 2 to the connecting device 6 as shown in FIGS. 2 and 3, first the parallel feeder 2
After inserting the conductors 2a and 2a of the parallel feeder 2 into the insertion hole 5b, the conductors 2a and 2a of the parallel feeder 2 are respectively inserted into the conductor abutting portion 2 as shown in FIG.
6.27 and the holding part 40.40, and in this state, tighten the tightening screw 11 with a screwdriver or the like, and as shown in FIG. 2
7 with the presser part 40.40. Further, if necessary, tighten the tightening screws 9.9 of the tightening plate 10 to press and fix the parallel feeder 2 to the external conductor abutting portion 24 by the tightening plate 10. When the two conductive wires 2a, 2a are inserted between the two conductive wire abutting portions 26.27 and the holding portions 40.40 as described above, one conductor IJi2a is guided by the oblique surface 41a of the fitting piece 41. The conductor abutting part 26 and the holding part 40
Its insertion is easy because it is guided between the two. Furthermore, when pressing the conductive wires 2a, 2a, since the tightening screw 11 is located extremely close to the right conductor 2a in FIG. It can be pressed extremely strongly and the conductor wire 2a can be firmly prevented from coming out.

As a result, it is possible to prevent the parallel feeder 2 from being pulled out from the connecting device 6 even when the parallel feeder 2 has a strong tensile force.

Next, when connecting the coaxial cable 3 to the connection device 6 as shown in FIGS. 5 to 8, first the coaxial cable 3
is inserted into the insertion hole 5b, and the outer conductor 3b is inserted between the outer conductor abutting part 24 and the abutting surface 36 of the clamping plate 10, and the center conductor 3a is inserted between the center conductor abutting part 31 and the center of the holding plate 12. It is inserted between the conductor holding part 40a and the conductor holding part 40a. In this case, since the space between the center conductor abutting part 31 and the center conductor holding part 40a is located on the extension of the insertion hole 5b, the center conductor 3a can be easily inserted therein by straight insertion. Thereafter, tighten the tightening screws 9.9 with a screwdriver 50 as shown in FIG.
Press and fix. In this case, since the screw hole 23 is inclined as described above, even if there is an overhang piece 37 (the fitting wall of the case lid is shown in the drawing) in the position facing the screw hole 23 of the base 21, the screw hole 23 can be tightened. The attached screw 9 can be rotated from an oblique direction using a screwdriver 50. Further, by tightening the tightening screw 11, the stop conductor 3a is pressed and fixed to the center conductor abutting portion 31. In the above case, since the tightening screw 11 is located extremely close to the center conductor 3a, the center conductor 3a
a can be pressed extremely strongly by the tightening force of the tightening screw 11, and the center conductor 3a can be firmly prevented from coming out.

FIG. 9 shows another example of the present application, in which the base 21e of the connector main body 8s is formed separately from the case 4e. The connector main body 8e includes other electronic components 48a and 48b on a printed circuit board 47 disposed within the case 4e.

Installation is the same as 48e. The mounting means include soldering the terminal boards 18a + 19e to the copper foil of the printed circuit board 47, or attaching the base 21e to the printed circuit board 47.
Any means can be used, such as screwing it on.

In addition, parts that are functionally the same or equivalent to those in the previous figure are designated with the same reference numerals and the alphabet e as in the previous figure.
The redundant explanation has been omitted by adding .

(Also, in the next version, the same idea will be used, and the letter f will be added to omit the redundant explanation.

Next, Fig. 1θ shows a different embodiment of the present application, in which the center conductor contact portion 31f and the conductor contact portion 27f are constructed separately, and the converter 7f has 75Ω and 300Ω (or 200Ω). ) impedance transformer is used, and the pair of balanced terminals 51 and 52 of the impedance transformer are connected to the conductor contact portion 26.
A pair of unbalanced terminals 53 and 54 are connected to the center conductor abutting portion 31f and the four external body abutting portions 24f, respectively.

(Effects of the Invention) As described above, in the present invention, when connecting the parallel feeder 2 to the connector body 8, the two conductive wires of the parallel feeder 2 are connected to the connector body 8 and the holding plate 12. By tightening the tightening screw 11 after inserting the two conductors 2a between them, the two conductors 2a can be pressed and connected to the two conductor contact parts 26 and 27, and the parallel feeder 2 can be easily and quickly connected. be able to.

Further, as described above, by tightening one tightening screw 11, the two conductors 2a of the parallel feeder 2 are connected to the two conductor contact portions 26.
．． 27, the tightening position of the tightening screw 11 is set between the two conductor contact portions 26 and 27 when the parallel feeder 2 is connected. Since it is set at a position unevenly distributed near one conductor contact part, avoiding the intermediate position of one conductor 2,
a can be tightened with extremely strong force to the conductor abutting portion, preventing the conductor 2a from being pulled out, and as a result, the mechanical connection and electrical connection of the parallel feeder 2 can be strengthened.

Furthermore, when connecting the coaxial cable 3 to the connector body 8, the tightening position of the tightening screw 11 is unevenly distributed at a position that avoids the intermediate position between the two conductor abutting parts 26 and 27, as described above.
Since the center conductor abutment part 31 is provided at the middle position, the center conductor 3a of the coaxial cable 3 is placed between the connector main body 8 and the holding plate 12 at the middle position between the two conductor abutment parts 26 and 27. The coaxial cable 3 can be connected by tightening the tightening screw 11 after straight insertion, and the coaxial cable 3 can also be easily connected.

In addition, when the coaxial cable 3 is connected, the center conductor abutment part 31 is provided near the tightening position of the tightening screw 11, so that the center conductor 3a of the coaxial cable 3 is attached to the center conductor abutment part 31. Coaxial cable that can be tightened strongly 3
This has the effect of strengthening mechanical and electrical connections.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and Fig. 1 is an exploded perspective view of a connecting device, Fig. 2 is a front view showing a state in which a parallel feeder is connected, and Fig. 3 is a sectional view taken along the line ■-■. 5 is a front view showing the state in which the coaxial cable is connected, FIG. 6 is a sectional view taken along the vr-vt line, and FIG.
The figure is a sectional view taken along the line ■-■, FIG. 8 is a sectional view taken along the line ■-■, FIG.
Figure O is a circuit diagram showing a different embodiment. 2... Parallel feeder, 2a... Conductor, 3... Coaxial cable, 3a... Center conductor, 6... Connection device, 8
. . . Connector body, 11. Tightening screw, 12. Holding plate, 26.27. Conductor contact portion, 31. Center conductor contact portion. Figure 3 Figure 4 and 4A Figure 5 Figure 6 Figure 7 Figure 10 Figure 9

Claims (1)

[Claims] One surface of the base made of insulating material has a conductive external conductor contact part for contacting the outer conductor of the coaxial cable, and two conductive wire contacts for contacting the conductor of the parallel feeder. A clamping plate is attached to the external conductor abutting part so as to press the external conductor attached to the external conductor abutting part. The connecting tool body is provided with a connector that straddles the two conductor contact portions so as to be able to press the two conductor wires that are respectively attached to the two conductor contact portions. A holding plate having a long length is attached to the two conductor abutting portions so as to be freely oriented toward and away from each other, and a tightening screw for tightening the holding plate to the connector body is passed through the holding plate. In the connecting device provided in the state of the art, the position where the tightening screw passes through the holding plate is on one side, avoiding the center position of the conductor holding part that faces the two conducting wire abutting parts that are present on both sides of the holding plate. It is set at a position unevenly distributed near the conductor holding part, and on the other hand, on one side of the base, there is a coaxial cable to be inserted between the connection tool main body and the abovementioned holding plate, at the center position of the two conductor contact parts. A connection device characterized in that it is provided with a center conductor abutting portion having conductivity for abutting a center conductor of a cable.