JPS60112277A - Electric connecting device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION An electrical contacting arrangement comprising means for grounding and terminating the free end of a cable of the type comprising a dielectric separating from the shield and an insulating jacket surrounding the shield. .

As a conventional air connection device for this ridge, for example, U.S. Patent No. 3,
3 7 3, 2 4 3, 3, 6 3 4.8]
No. 5 and No. 3,07 4, 04 5, these devices are used to terminate the free elevation of a coaxial cable and to ground its braided shield to the connector shell. A circular ferrule is used. Although the means of using such ferrules was not well-regarded at the beginning of its development, the method by which electrical connection devices clamp or clamp coaxial cables by such ferrules is limited to the braiding of coaxial cables. This is effective in completely preventing the electric circuit created between the coil rod and the carp lid shell from being opened. However, it is by no means perfect; if the insulating jacket of the coaxial cable deteriorates and weakens due to temperature changes, the conductive ferrule will preferentially move from the engagement contact position with the connector shell in the coaxial direction. This may cause the electrical circuit between the ferrule and the carp/ftafel to become open.

Therefore, in the above-mentioned electrical connection device installed at the free end of a single-strand cable, it is even more desirable that the same-ground cable conductivity 1'! = 7 - ensuring that a closed electrical equivalence relationship between the lead and the connector shell is maintained.

The present invention has been made to solve the above-mentioned conventional problems, and is capable of easily assembling an electrical connection device terminating at the free end of a coaxial cable while still providing good radio interference shielding. Our aim is to provide what we can.

It is another object of the present invention to provide a coaxial cable connection system that provides two, rather than one, means for suppressing radio interference.

A fourth object of the present invention is to provide an electrical contact lif device which can be improved by making only slight improvements to the conventional electrical contact lif device.

The above-mentioned objects of the present invention are achieved by the following means.

That is, an electrically conductive cylindrical connector shell having an internal area for receiving the free end of the electrical connection device 6 according to the present invention (inner, specialized ferrule, color connector and IFIJI+III) cable is completely enclosed. Sorry, the internal hole has an internal thread that is connected to the person 1 (4), and this internal thread connects with the external thread of the raw collar.The collar and ferrule are connected to the same ground cable. free phone
The wedge body of the ferrule is wedged between the coaxial cable's shield and the dielectric, and the collar 1 is placed about the length of the insulating jacket of the pronated cable.

The grounding means for grounding the coaxial cable braid shield to the coaxial cable includes an inner wall of the shell having an inner screw and an inner end wall, and a ring of a step A' which defines the end face and the circumferential face with a pair of spacings. It is composed of Fukudo Department. this"
One circumferential surface of the end shoulder has an external thread that is threadedly engaged with an internal thread of the carp lid shell so that the internal end wall of the shell contacts the end surface of one of the circumferential shoulders. It is moved in the axial direction so that the gold column (+7iia wall)
The contact between and gold/or (end face)! Germany is obtained. Both the probing of such screws and the contact between the end wall and the end face create two overlapping electrical paths between the four-rail cable's braided shield and the connector shell.

Hereinafter, an example of a conventional VC apparatus and an example of a VC apparatus according to the present invention will be described in detail with reference to the attached FIGS.

FIG. 1 shows a groove cross-section of a conventional electrical connector installed on a coaxial cable.

In Figure 1 of the 2nd edition, the conventional plug-type electrical connector 10 is shown in Figure 1 of the 2nd edition. I have a free 4l of lII11 cable 3o in winter. The coaxial cable 3o is made up of a central conductor 32, a dielectric material 34 arranged around the outer periphery of the central conductor, a conductive play-don mold 36 arranged around the outer periphery of the dielectric material, and a rubber etc. arranged around the outer periphery of the shield. This type of jacket includes a thin jacket 38. Each of these elements 32, 34, 36, 38 are coaxial with each other.

Thus, the plug-type electrical connector 10 includes a medium-weight cylindrical shell 12 of electrically conductive material, a tubular collar 20 having an external thread 28 and an outwardly extending radial flange 22.
The ferrule 40 of the tube method is included. The ferrule 40 and collar 20 are received within the shell 12 so as to be substantially concentric with the cable's center conductor 32 while encircling and tightening the dimensions of the cable 30.

The connector shell 12 has a royal kasuri pattern, an outer end surface 14, and an inner part. This internal cavity Pli terminates at an end wall 16 perpendicular to the main axis of the shell and includes an approximately cylindrical internal wall. The interior location then receives the ferrule 40 and collar 20, one interior wall of which includes an interior thread 18 formed therearound.

The collar 20 includes a pipe sleeve 26'fr.

This sleeve 26 has a plurality of zones 25a, 261) and 26c of increasing internal diameter, which zones define the outside. The edges of these shoulders define an imaginary conical shape and define an external portion that cuts into the insulating jacket 38 of the coaxial cable 30.

The ferrule 40 is made of a conductive material and has a truncated wedge shape body 42! 7? An annular dog flange 48 having an i8 surface -46'5, and an internal hole 4 extending in the interaxial direction inside the main body.
4. The diameter of this internal hole 44 is made slightly larger than the outer diameter of the dielectric 34.

The ferrule 40 and the collar 20 are equipped with rx self-installation in place of the free end of the hi mH'D3 cable full 30, and the ferrule main body 42 connects with the 1 electric body 34 of the 1 axis cable 30 and the 48-wire braid 36 of the external 1. At the same time, the collar 20 is engaged with the ferrule jacket 38 of the coaxial cable 30, and the ferrule body 42 transfers the radially outward force between the braid shield 36 and the insulating jacket 38 of the coaxial cable 30. Both, plus color 2
Shoulder forces limited by the three sleeves 26&, 26b&t'')-260 of 0; each engages the jacket 38 axially.

Therefore, in order to prevent unwanted interference (RFI), it is necessary to
Remaining space between end wall 16 1. (False and Gold) This metal contact is a continuous electrical circuit between the wall 12 and the plate 1/36. However, if the insulating jacket 38 of the coaxial cable 30 deteriorates due to crystallinity change or the like, the ferrule 40 may retreat in the axial direction from the contact device between the gold alloy and the gold alloy.

The present invention is in contrast to such conventional methods! ! FIG. 2 shows the RFx, r. v. An example of a shield connection is shown, and parts corresponding to those shown in FIG. 1 are given the same reference numerals.

In FIG. 2, the /l 12 includes an end wall 16 and an internal thread 8. In FIG. The ferrule includes a stepped annular shoulder 52 adjacent its end face 46. The stepped annular shoulder 52 positions the end surface 461 at a distance from the end surface 46 (
and this end surface 46' extends from the first surface around the annular shoulder 52.
of the circular surface and the second . around the annular flange 48. Limit the cylindrical surface.

The curved surface around the annular flange 48 is externally threaded 5
4. However, the circumferential surface around the annular shoulder 52 does not have such an external connection.

End face 4fi of ferrule 40 and end wall 16 of shell]2
is disposed on a plane perpendicular to the ferrule of the connector, and the top surface 46 of the ferrule 40 is disposed on a plane that is sloped sharply along the main axis of the connector. Shell 12 4iMi16
is adapted to come into contact with the ferrule 40 when it is assembled into the shell 12. /Inside of El-12” setting +stq. The external thread 54 of the ferrule 40 is screwed into the external thread 28 of No. 1-201H.

Such internal threads 18 and external threads 54 and 28 are
A threaded engagement surface is provided in contact to increase the frictional force that prevents any rotation of the ferrule that would cause the ferrule 40 to retreat axially from the point of contact between the metal (end wall 16) and the electric metal (end surface 46). Form. Additionally, the close contact of the end wall 16 of the shell 12 with the end surface 46 of the ferrule 40 further increases the sloshing force that prevents rotation of the ferrule.

The wedge-shaped truncated ferrule body 42 has a helical cam surface 58, such as a thread, around its outer surface. This helical cam surface 58 is formed when the wedge-shaped ferrule body 42 is inserted while being rotated in the axial direction between the dielectric 34 of the ground cable 30 and the conductive blade/root 36 on the outside thereof. It bites into and engages the blade shield 36. Such camming surface 58 therefore acts to resist external axial pulling forces applied to the cable to remove it from the coaxial cable 30i connector]0. Additionally, the shoulder 52 has a hexagonal cross-section to assist in rotationally inserting the helical cam surface 58 of the ferrule 40 into the shield 36 of the coaxial cable 30.

By incorporating the ferrule 40' into the connector shell 2, the end wall 16 contacts the end surface 46 to form a first suction path, and the internal thread 18 and external thread 54 are screwed together. A second ground connection is formed. Zubete no screw 18
, 54 and 58 are preferably the same, and the more the ferrule 40 connects to the blade, the tighter the threads are.

For attachment to the connector 10, the coaxial cable 30 is
It is cut to have a free end with a square cut end. The collar 20 is then fitted onto the outer periphery of the cable and positioned axially rearward of the rectangular cutout of the cable, after which the helical cam surface 58 of the fugol ring 40 connects the cable blade shield 36 and the inducer 34. It is inserted while rotating between the two. The contact pin 60 is inserted into the bare protruding end of the central conductor 32 of the cable and soldered to the bare protruding end. After this, the shell 12 is screwed onto the ferrule, and then the collar 20 is screwed onto the shell 12, and the end face 24 of the shell 12 is connected to the 'Q: kJ 14 of the /L 12, and the inner diameter of the sleeve 26 is continuous. ,
The increasing sections 26a, 26L) and 26C engage the insulating jacket 38 of the cable 30.

[Brief explanation of the drawing]

FIG. 1 is a horizontal cross-sectional view showing a conventional electrical connection device attached to a coaxial cable, and FIG.・Electrical connector, 12..Shell, 14..End face, 16..End wall, 18..Internal screw, 20..Collar, 22.Flange, 24..Am, 26@.Sleeve, 26a, 26b , 26G... Area where the inner diameter increases continuously, 28... External thread, 30... Coaxial cable, 32
...Central conductor, 34...Dielectric, 36...Insulating jacket, 40...Ferrule 42...Ferrule body, 44...Inner hole, 46. 461...End face, 48...Fludge, 52...Shoulder, 5
4. External thread, 58. Spiral cam surface, 600. Contact pinot. (1 other person)

Claims (1)

[Claims] l Central conductor +321 and its outer conductive shield f3
I was interposed between it and 6+. A type of coaxial cable that includes a dielectric and an insulating jacket surrounding the shield.
30) An electrical connection device comprising means for terminating the free end and electrically grounding the electrically conductive shell, the pipe collar (20) and the radial flange with the end face (46). 1. A ferrule (4G,!: k) having a truncated outer surface and having a truncated outer surface, the collar (20) is fixed to the shell (12), and the jacket (2) is arranged around the inner wall of the collar to be secured to the insulating jacket, the ferrule f4G surrounds the dielectric (34), and
the frusto-shaped outer surface engages the shield (g);
The shield (36) and the freezing jacket G81 are connected to the collar f2[1 and the ferrule +4CI, respectively.
In an electrical connection device that is tightened axially and radially between the inner and outer surfaces of the
I6) and an internal thread formed on the inner wall of the 7-well adjacent to this end wall, and the radial flange (481) of the ferrule (40 is threadedly engaged with the internal thread 08 of the shell 1121 on its outer peripheral surface). mJ end face (40 is the end wall (
The threaded engagement of these screws (], 8, 54) forms a first electrical circuit and the front ferrule part is connected to the shell (12). ), the electrical connection device does not retreat in the axial direction from the contact position with the end wall (161) and the end surface [46'] forms a second electrical circuit through contact engagement with the end wall (161) and the end surface [46']. 2. The truncated outer surface of the ferrule f41 engages with the conductive shield to establish an electric circuit relationship with the shield. Electrical connection device as described. 3 flange (4 barrels are stepped, dFt shoulder (
52), and this shoulder portion includes the end face (4) and the other end face (46) adjacent to the flange (481).
The electrical connection device according to claim 2, wherein the end face (40 has a hexagonal cross section to facilitate screw engagement of the seven errules (40) to the shield (to). .